CN101719863B - Method, device and system for mapping service quality from IPv6 to PON - Google Patents

Abstract

The embodiment of the invention discloses a method, device and system for mapping IPv6 to PON service quality, and relates to the network field. The invention is invented to solve the problems in the prior art that it is necessary to go through two service quality mappings to realize the bearing of the PON to the IPv6 data packet, which is complex and has high processing costs. The technical solution proposed by the present invention includes: receiving a network protocol version 6 data flow, the data flow includes at least one data packet, wherein the data packet includes service quality information; according to the service quality information, the data packet is mapped to a network that can meet the service quality requirements Passive optical network logical port. Embodiments of the present invention provide technical solutions that can be applied to networks.

Description

Quality of service mapping method, device and system from IPv6 to PON

technical field

The invention relates to the network field, in particular to a service quality mapping method, device and system from network version protocol 6 to a passive optical network.

Background technique

The so-called Optical Access Network (OAN, Optical Access Network) is an access network using optical fiber transmission technology, and generally refers to a system that uses optical fiber communication or partially uses optical fiber communication between service function points and user premises networks. The entire reference architecture of OAN is composed of customer premises network, access network and service function points. The main network elements of the access network include: Optical Line Termination (OLT, Optical Line Termination), Optical Distribution Network (ODN, Optical Distribution Network), Optical Network Unit (ONU, Optical Network Unit), Adaptation Function (AF, Adaptation Function ). AF is an adaptation function body, which is an optional device, mainly to provide mutual conversion between ONU/ONT interface and UNI interface; OLT provides network side interface for optical access network; ONU provides user side interface; ODN is between OLT and ONU Provides optical transmission means, where one OLT can be connected to one or more ODNs. Optical access network can be divided into passive optical network (PON, Passive Optical Network) and active optical network (AON, Active Optical Network).

In the process of realizing the above-mentioned PON bearer service, the inventor found that the following problems exist in the prior art: as Internet Protocol Version 6 (IPv6, Internet Protocol Version 6) replaces Internet Protocol Version 4 (Ipv4, Internet Protocol Version 4), passive How the optical network bears IPv6 has become an urgent technical problem to be solved. At present, the process of PON carrying IPv6 services is similar to the process of PON carrying IPv4 services. PON needs to realize the mapping from IPv6 to Ethernet first, and then realize the mapping from Ethernet to PON logical ports, which is not only complicated but also expensive to process.

Contents of the invention

Embodiments of the present invention provide a method, device and system for mapping network version protocol 6 to a passive optical network, which can map network version protocol 6 to a passive optical network simply and at low cost.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

A method for mapping network version protocol 6 to the quality of service of a passive optical network, comprising:

Receiving an IPv6 data stream, the data stream includes at least one data packet, wherein the data packet includes IPv6 quality of service information;

According to the quality of service information, the data packet is mapped to a logical port of the passive optical network that can meet the quality of service requirement.

A system for mapping IPv6 to passive optical network quality of service, comprising:

Receiving/sending module: used to receive/send network protocol version 6 data flow, the data flow includes at least one data packet, wherein the data packet includes service quality information;

A mapping module, configured to map the data packet to a passive optical network logical port that can meet the quality of service requirements according to the quality of service information.

An optical network unit, comprising:

Receiving/sending module: used to receive/send network protocol version 6 data flow, the data flow includes at least one data packet, wherein the data packet includes service quality information;

Data packet classification module: used to classify the data packets received by the receiving module according to the network protocol version 6 service quality information;

Mapping module: used to map data packets to passive optical network logical ports that can meet quality of service requirements according to the quality of service information;

Service type conversion module: used to convert the network protocol version 6 user service type received from the legal port to the operator service type, or convert the operator service type to the user service type;

Flow label configuration module: used to configure and set the user flow label field and/or service flow label field and their corresponding values in the network protocol version 6 flow label field before receiving the network protocol version 6 data flow.

An optical path termination point comprising:

Receiving/sending module: used to receive/send network protocol version 6 data flow, the data flow includes at least one data packet, wherein the data packet includes service quality information;

Data packet classification module: used to classify the data packets received by the receiving module according to the network protocol version 6 service quality information;

Mapping module: used to map data packets to passive optical network logical ports that can meet quality of service requirements according to the quality of service information;

Service type conversion module: used to convert the network protocol version 6 user service type received from the legal port to the operator service type, or convert the operator service type to the user service type;

The flow label field modifying module: used for modifying the user flow label field and/or the service flow label field of the network protocol version 6 flow label field of the data packet received by the receiving module from the legal port.

The quality of service mapping method, device and system from IPv6 to passive optical network provided by the embodiments of the present invention can realize mapping of IPv6 to In the passive optical network, it solves the problem that the passive optical network in the prior art needs to realize the mapping of quality of service from IPv6 to Ethernet first, and then realize the mapping of quality of service from Ethernet to the logical port of the passive optical network, so as to realize complex and high processing cost question. The QoS mapping method and device from IPv6 to passive optical network provided by the embodiments of the present invention map IPv6 to the passive optical network through QoS once, which simplifies the QoS mapping process and reduces the network construction cost of IPv6 on PON.

Description of drawings

Fig. 1 is the flow chart of the QoS mapping method from IPv6 to PON in which the transmission direction provided by Embodiment 1 of the present invention is the uplink/downlink direction;

Fig. 2 is the flow chart of the QoS mapping method from IPv6 to PON provided by Embodiment 2 of the present invention;

Fig. 3 is the flow chart of the QoS mapping method from IPv6 to PON provided by Embodiment 3 of the present invention;

Fig. 4 is the QoS mapping model one of IPv6 to PON provided by the present invention;

Fig. 5 is the QoS mapping model two of IPv6 to PON provided by the present invention;

Fig. 6 is the QoS mapping model three of IPv6 to PON provided by the present invention;

Fig. 7 is the QoS mapping model four of IPv6 to PON provided by the present invention;

Fig. 8 is the QoS mapping model five of IPv6 to PON provided by the present invention;

Fig. 9 is the QoS mapping model six of IPv6 to PON provided by the present invention;

Fig. 10 is the QoS mapping model seven of IPv6 to PON provided by the present invention;

FIG. 11 is a schematic structural diagram of an optical network unit provided by the present invention;

FIG. 12 is a schematic structural diagram of an optical path termination point provided by the present invention.

Detailed ways

In order to solve the problem in the prior art that PON bears IPv6 and requires two QoS mappings which is not only complicated but also requires high cost, the present invention provides a method, device and system for mapping IPv6 to PON quality of service. The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the embodiment of the present invention provides the QoS mapping method from IPv6 to PON whose transmission direction is the uplink/downlink direction, including:

Step 101, ONU/OLT receives IPv6 data flow, and this data flow comprises at least one data packet, and wherein data packet comprises service quality information;

The service quality information mainly includes:

IPv6 service type information;

IPv6 user address information;

IPv6 flow label information.

Step 102, the ONU/OLT classifies the data packets according to the quality of service information;

The method for classifying service types in this embodiment includes:

When based on service types and users, classify according to IPv6 service types and IPv6 user addresses;

When based on service type, classify according to IPv6 service type;

When based on users, classify according to IPv6 user addresses;

When based on service flow and user, classify according to IPv6 flow label information and IPv6 user address.

In step 103, the ONU/OLT maps the data packet to a passive optical network logical port that can meet the quality of service requirement according to the quality of service information.

When classifying according to the IPv6 service type and the IPv6 user address in the step 102, then the packets with the same IPv6 service type and the same IPv6 user address are mapped to the same PON logical port, and the PON logical port can realize the isolation of services and users , the QoS management and control of each service for each user can be realized through the logical port.

When classifying according to the IPv6 service type in the step 102, then the packets with the same IPv6 service type are mapped to the same PON logical port;

When classifying according to the IPv6 user address in the step 102, then the data packets with the same IPv6 user address are mapped to the same PON logical port;

When performing classification according to the IPv6 flow label information and IPv6 user address in the step 102, the data packets with the same IPv6 user address and the same IPv6 flow label information are mapped to the same PON logical port.

In the process of carrying IPv4 services on the existing PON, the PON must first realize the mapping from IPv4 to Ethernet, and then realize the mapping from Ethernet to PON logical ports. This is determined by the protocol standard of IPv4. Since IPv4 does not support the concept of flow, the IPv4 service cannot carry more service quality information, and it also makes it impossible for the PON to map the received IPv4 service to a service that can satisfy its service quality. Logical ports, so IPv4 services must pass through the Ethernet before being transmitted to the PON. The process of carrying IPv6 services on the existing PON is developed from the process of carrying IPv4 services on the PON. The PON must first realize the mapping from IPv6 to Ethernet, and then realize the mapping from Ethernet to PON logical ports. But in fact, the protocol standards of IPv6 and IPv4 are different. IPv6 supports the concept of flow, so that IPv6 services can carry more service quality information. IPv6 services are mapped to logical ports that can meet the quality of service of the IPv6 services. In the embodiment of the present invention, a data packet is set in the IPv6 service data flow, the data packet includes IPv6 service quality information, and the PON maps the data packet to a passive optical network logical port that can meet the service quality requirements according to the service quality information. The embodiment of the present invention only performs QoS mapping once, which simplifies the QoS mapping process and reduces the network construction cost of IPv6 on the PON.

In order to enable those skilled in the art to understand the technical solution provided by the embodiment of the present invention more clearly, the following describes the QoS mapping method from IPv6 to PON according to the uplink direction and the downlink direction respectively.

As shown in Figure 2, for another embodiment of the present invention, when the direction of transmission data packet is the uplink direction, the QoS mapping method of IPv6 to PON provided by the present invention comprises:

In step 201, the ONU converts the service type of the user in the quality of service information to the service type of the operator.

In this embodiment, the TC field in the IPv6 message header can be identified by the user or the home gateway, and the service type identified by the user or the home gateway is called the customer service type (C-TC, Customer TC), and the user service type Indicates the type of user service. For different types of user services, operators need to provide different services. Since the value of C-TC is specified by different users, the same C-TC value may correspond to different service types. For example, for user 1, the service type value is 00000000 indicating the voice type, and for user 2, the service type value is 00000000 indicating the image type.

The TC domain in the IPv6 message header can also be converted by ONU or OLT, and the service type identified by ONU or OLT is called the operator's service type (P-TC, Provider TC), and the operator's service type represents the service needs The way the operator handles it. The value of P-TC is managed uniformly with the service type in the operator management domain. For different types of operator services, different management methods are required in the operator system. Therefore, the value of P-TC is in the operation There is a one-to-one correspondence between the business management domain and the service type. For example, the value of the service type is 00000000 to uniformly represent the voice type.

Therefore, in the process of connecting the user to the operator's network through the PON, it is necessary to convert the service type, that is, to unify the C-TC sent by the user into the P-TC that the operator can receive.

Described step 201 can be carried out after described step 102, and this moment, step 201 is carried out in ONU, and ONU only converts the user business type from the legal user port, put an end to illegal users, at this moment, OLT only Perform transparent transmission.

Described step 201 also can be carried out in OLT, and OLT only converts the user service type from legal user port, stopped illegal user, and this moment ONU only carries out transparent transmission to data packet (this situation is not represented in the figure ).

The step 201 is an optional step. In actual situations, it can also be agreed that the user uses a unified service type. At this time, the step 201 is not passed.

In step 202, the ONU sets the flow label field in the quality of service information.

When the transmission direction is the uplink direction, before receiving the network protocol version 6 data flow, set the customer flow label field (C-FL, Customer-Flow Label) in the IPv6 flow label field, which is recommended to be 12 bits, and is used in the receiving network After the protocol version 6 data flow, the user flow label field of the network protocol version 6 data packet received from the legal port is modified to indicate that the data packet comes from a legal user;

It is also possible to further set the service flow label field (S-FL, Service-FlowLabel) in the IPv6 flow label field, which is recommended to be 8 bits, and is used to check the network protocol received from the legal port after receiving the network protocol version 6 data flow. The service flow label field of the version 6 data packet is modified to distinguish different service flows under the same user, or to indicate different OLTs that the data packet passes through.

The length of the C-FL and the length of the S-FL can be customized according to the requirements of the operator, as long as the sum of the length of the C-FL and the length of the S-FL is 20 bytes of the total length of the FL. (The step 202 is an optional step, and step 202 may not be passed in actual situations).

ONU can also only modify the C-FL domain of FL to identify users for IPv6 user data coming from legal ports; OLT can modify the S-FL domain of FL to identify service flows or different OLTs, IP edge nodes Only receive the data flow with C-FL, in a certain sense, put an end to illegal port users.

In this embodiment, the OLT can also convert the flow label, for example, the user flow label field (C-FL) is uniformly numbered, and different users are modified to different values. For different users in the same ONU, the corresponding C-FL The FL numbers are different from each other. For users in different ONUs, the corresponding C-FL numbers may be the same. Therefore, the OLT needs to uniformly number the C-FLs from different ONUs to prevent confusion caused by the same number.

As shown in Figure 3, for another embodiment of the present invention, when the direction of transmission data packet is the downlink direction, the QoS mapping method of IPv6 to PON provided by the present invention comprises:

In step 301, the OLT converts the service type of the operator in the quality of service information into the service type of the user.

The step 301 can be performed after the step 102. At this time, the step 301 is performed in the OLT. At this time, the ONU only transparently transmits the data packet.

The step 301 can also be performed in the ONU, at this time, the OLT only transparently transmits the data packet (this situation is not shown in the figure).

The step 301 is an optional step. In actual situations, it can also be agreed that the user uses a unified service type. At this time, the step 301 is not passed.

In order to enable those skilled in the art to understand the technical solutions provided by the embodiments of the present invention more clearly, the QoS mapping methods from IPv6 to PON are introduced respectively according to various mapping models below. When the quality of service information of the data flow was based on user address information and service type information, the QoS mapping model of IPv6 to PON provided by the present invention is as shown in Figure 4, (wherein P represents the source or destination IPv6 address or IPv6 address of user/home gateway Address prefix), can be used in VLAN (Virtual Local Area Network, Virtual Local Area Network) N: 1 mode.

N:1 mode user 11 has user services (3TC) of 3 different transmission levels (TC1, TC2, TC3 respectively), and the service quality information of each user service includes: user address information (source or destination of user/home gateway) IPv6 address or IPv6 address prefix P1) and user service type information (C-TC). The three services are transmitted to ONU1, and ONU1 converts the service types of the three services from the user service type C-TC to the operator service type P-TC, that is, the three transmission levels of the N:1 mode user 11 The services C-TC1, C-TC2, and C-TC3 are converted into operator service types P-TC1, P-TC2, and P-TC3 respectively, and ONU1 also converts the service types in the user service quality information from user service types to Operator service type, since the user address information of the three services is the same (all are P1), but the service types are different (respectively P-TC1, P-TC2, P-TC3), so the transmission needs to be mapped to three different Realization of the transmission interface, that is, the transmission interfaces GEM-PORT11, GEM-PORT12, and GEM-PORT13 respectively mapped to the GPON encapsulation method are sent to the OLT. -TC3 way to send to the operator.

N: 1 mode user 12 has 2 transmission level services (2TC), and the service quality information of each user service includes: user address information (source or destination IPv6 address of user/home gateway or IPv6 address prefix P2) and user service Type information (C-TC). The two services are transmitted to ONU1, and ONU1 converts the service types of the two services from C-TC1 and C-TC2 to P-TC1 and P-TC2 respectively, and ONU1 also converts the service types in the user service quality information From the user service type to the operator service type, since the user address information of the two services is the same (both P2), but the service types are different (respectively P-TC1, P-TC2), so the transmission needs to be mapped to two Realization of different transmission interfaces, that is, the transmission interfaces GEM-PORT14 and GEM-PORT15 respectively mapped to GPON encapsulation methods are sent to the OLT, and after being transparently transmitted by the OLT, they are sent to operator.

The services of users 21 and 22 are transmitted to ONU2, and ONU2 transparently transmits the services, and the OLT converts the service types of users 21 and 22 from user service type C-TC to operator service type P-TC, and sends them to the operator , other processing procedures are the same as those of users 11 and 12.

Among them, the ONU1 converts the user service type C-TC and the operator service type P-TC, and the OLT transparently forwards the P-TC.

ONU2 transparently forwards C-TC, and OLT converts C-TC and P-TC.

The ONU/OLT classifies the services of each user according to the service type domain, and maps different services of different users to the same PON logical port according to different IPv6 user addresses/VLANs and different IPv6 service types. The PON logical port can realize user and service The isolation of each service quality information management control for each user and each business can be realized through the PON logical port.

When the quality of service information of the data flow is based on the service type information, the QoS mapping model from IPv6 to PON provided by the present invention is shown in Figure 5, and can be used in the VLAN N:1 mode.

The service quality information of the N:1 mode users 11, 12, 13, 14 includes: user service type information (C-TC). Among them, the services of users 11 and 12 are transmitted to ONU1, and ONU1 converts the service type from user service type C-TC to operator service type P-TC. Since the service types of the three services of user 11 are different (respectively P-TC1 . The two services of user 12 are respectively converted into P-TC1 and P-TC2, which can be mapped to transmission interfaces GEM-PORT11 and GEM-PORT12 in the GPON encapsulation mode. Then the OLT performs transparent transmission and sends it to the operator.

The services of users 21 and 22 are transmitted to ONU2, and ONU2 transparently transmits the services, and the OLT converts the service types of users 21 and 22 from user service type C-TC to operator service type P-TC, and sends them to the operator , other processing procedures are the same as those of users 11 and 12.

Among them, the ONU1 converts the user service type C-TC and the operator service type P-TC, and the OLT transparently forwards the P-TC.

ONU2 transparently forwards C-TC, and OLT converts C-TC and P-TC.

The ONU/OLT classifies IPv6 service types, and maps packets of the same IPv6 service type to the same PON logical port according to the service type field. The PON logical port can realize service isolation, and the service for each service can be realized through the PON logical port Quality information management control.

When the quality of service information of data flow is based on user address information, the QoS mapping model of IPv6 to PON provided by the present invention is as shown in Figure 6, (wherein P represents the source or destination IPv6 address or IPv6 address prefix of user/home gateway), Can be used in VLAN N:1 or 1:1 mode.

The quality of service information of the users 11, 12, 13, 14 in the N:1 mode includes: user address information (source or destination IPv6 address or IPv6 address prefix P of the user/home gateway). Among them, the services of users 11 and 12 are transmitted to ONU1, and ONU1 converts the service type from user service type C-TC to operator service type P-TC, and the user address information of the three services of user 11 is the same, and is mapped to the transmission interface GEM -PORT11 is sent to the OLT; the user address information of the two services of user 12 is the same, and is mapped to the transmission interface GEM-PORT12 and sent to the OLT, and then the OLT transparently transmits the services of users 11 and 12 and sends them to the operator.

The services of users 21 and 22 are transmitted to ONU2, and ONU2 transparently transmits the services, and the OLT converts the service types of users 21 and 22 from user service type C-TC to operator service type P-TC, and sends them to the operator , other processing procedures are the same as those of users 11 and 12.

Among them, the ONU1 converts the user service type C-TC and the operator service type P-TC, and the OLT transparently forwards the P-TC.

ONU2 transparently forwards C-TC, and OLT converts C-TC and P-TC.

Although the ONU/OLT can distinguish the business type of each user, it still classifies according to different IPv6 user addresses/VLANs, and maps the data packets of the same user to the same PON logical port. The PON logical port can realize user isolation. Through the PON logic The port can realize the management and control of the quality of service information for each user.

When the quality of service information of the data stream is based on user address information and service type/based on service type information, the QoS mapping model of IPv6 to PON provided by the present invention is as shown in Figure 7, (wherein P represents the source or purpose of user/home gateway IPv6 address or IPv6 address prefix), can be used in VLAN1:1 mode.

The quality of service information of users 11, 12, 13, 14 in N:1 mode includes: user address information (source or destination IPv6 address or IPv6 address prefix P of user/home gateway) and user service type information (C-TC). Among them, the services of users 11 and 12 are transmitted to ONU1, and ONU1 converts the service type from user service type C-TC to operator service type P-TC, and ONU1 also converts the service type in the user service quality information from user service type to It is the service type of the operator. The user address information of the three services of user 11 is the same, but the service types are different, and they are respectively mapped to the transmission interfaces GEM-PORT11, GEM-PORT12, and GEM-PORT13 and sent to the OLT; the user address information of the two services of user 12 is the same, but Different service types are mapped to the transmission interfaces GEM-PORT14 and GEM-PORT15 and sent to the OLT, and then the OLT transparently transmits the services of users 11 and 12 and sends them to the operator.

The services of users 21 and 22 are transmitted to ONU2, and ONU2 transparently transmits the services, and the OLT converts the service types of users 21 and 22 from user service type C-TC to operator service type P-TC, and sends them to the operator , other processing procedures are the same as those of users 11 and 12.

Among them, the ONU1 converts the user service type C-TC and the operator service type P-TC, and the OLT transparently forwards the P-TC.

ONU2 transparently forwards C-TC, and OLT converts C-TC and P-TC.

The ONU/OLT classifies the services of each user, classifies according to different IPv6 service types/different IPv6 service types of different users, and maps the data packets with the same IPv6 user address/VLAN and the same IPv6 service type/IPv6 service type to the same PON logical port, the PON logical port can realize the isolation of users and services, and can realize the management and control of service quality information for each service/service of each user through the PON logical port.

When the quality of service information of the data flow is based on user address information and flow label information, the QoS mapping model of IPv6 to PON provided by the present invention is as shown in Figure 8, (wherein P represents the source or destination IPv6 address or IPv6 address of user/home gateway address prefix), can be used in VLAN1:1 mode.

The QoS information of users 11, 12, 13, and 14 in N:1 mode includes: user address information (source or destination IPv6 address or IPv6 address prefix P of the user/home gateway) and flow label information (FL). Among them, the services of users 11 and 12 are transmitted to ONU1, and ONU1 converts the service type from user service type C-TC to operator service type P-TC, and ONU1 also converts the service type in the user service quality information from user service type to It is the service type of the operator. The user address information of the three services of user 11 is the same, but the flow labels are different, and they are respectively mapped to the transmission interfaces GEM-PORT11, GEM-PORT12, and GEM-PORT13 and sent to the OLT; the user address information of the two services of user 12 is the same, but The flow labels are different, and are mapped to the transmission interfaces GEM-PORT14 and GEM-PORT15 respectively and sent to the OLT, and then the OLT transparently transmits the services of users 11 and 12 and sends them to the operator.

The services of users 21 and 22 are transmitted to ONU2, and ONU2 transparently transmits the services, and the OLT converts the service types of users 21 and 22 from user service type C-TC to operator service type P-TC, and sends them to the operator , other processing procedures are the same as those of users 11 and 12.

Among them, the ONU1 converts the user service type C-TC and the operator service type P-TC, and the OLT transparently forwards the P-TC.

ONU2 transparently forwards C-TC, and OLT converts C-TC and P-TC.

The ONU/OLT classifies the service flow of each user, classifies according to the different IPv6 flow label information of different users, maps the data packets with the same IPv6 user address and the same IPv6 flow label information to the same PON logical port, and the PON logical port can Realize the isolation of users and service flows, and realize the management and control of service quality information for each service flow of each user through the PON logic port.

When the service quality information of the data flow is based on the user flow label information, the QoS mapping model from IPv6 to PON provided by the present invention is shown in FIG. 9 and can be used in VLAN1:1 mode.

The quality of service information of users 11, 12, 13, and 14 in N:1 mode includes: user flow label information (C-FL). Among them, the services of users 11 and 12 are transmitted to ONU1, and ONU1 converts the service type from user service type C-TC to operator service type P-TC, and the user flow label information of the three services of user 11 is the same, and is mapped to the transmission interface GEM-PORT11 sends it to the OLT; the user flow label information of the two services of user 12 is the same, and is mapped to the transmission interface GEM-PORT12 and sent to the OLT, and then the OLT transparently transmits the services of users 11 and 12 and sends them to the operator.

The services of users 21 and 22 are transmitted to ONU2, and ONU2 transparently transmits the services, and the OLT converts the service types of users 21 and 22 from user service type C-TC to operator service type P-TC, and sends them to the operator , other processing procedures are the same as those of users 11 and 12.

Among them, ONU1 transparently transmits the existing C-FL and S-FL, or modifies the value of FL to a value composed of C-FL and S-FL, and the OLT transparently forwards C-FL and S-FL.

ONU2 transparently transmits the existing C-FL and S-FL, or modifies the value of FL to a value composed of C-FL and S-FL, and the OLT modifies the value of C-FL to another value to avoid The C-FL values of ONUs may not be uniform and may be repeated; the C-FL values are uniformly numbered from different ONUs according to information such as PON logical ports.

The ONU/OLT classifies the business of each user, and maps different service data packets of the same user in the IPv6 flow label domain to the same PON logical port according to the C-FL in different IPv6 flow label domains, and the PON logical port can realize user isolation , through the PON logic port, the management and control of the quality of service information of each user can be realized.

When the QoS information of the data flow is based on the user flow label information, the QoS mapping model from IPv6 to PON provided by the present invention can also be used in VLAN1:1 mode as shown in FIG. 10 .

The quality of service information of users 11, 12, 13, and 14 in N:1 mode includes: user flow label information (C-FL). Among them, the services of users 11 and 12 are transmitted to ONU1, and ONU1 converts the service type from user service type C-TC to operator service type P-TC, and the user flow label information of the three services of user 11 is the same, and is mapped to the transmission interface GEM-PORT11 sends it to the OLT; the user flow label information of the two services of user 12 is the same, and is mapped to the transmission interface GEM-PORT12 and sent to the OLT, and then the OLT transparently transmits the services of users 11 and 12 and sends them to the operator.

The services of users 21 and 22 are transmitted to ONU2, and ONU2 transparently transmits the services, and the OLT converts the service types of users 21 and 22 from user service type C-TC to operator service type P-TC, and sends them to the operator , other processing procedures are the same as those of users 11 and 12.

Among them, ONU1 transparently transmits the existing C-FL or modifies the C-FL domain of FL, and the OLT modifies the S-FL domain of FL.

ONU2 transparently transmits the existing C-FL or modifies the C-FL domain of FL, OLT modifies the S-FL domain of FL, and modifies the C-FL value to another value to avoid C-FL values from different ONUs There may be duplication without uniformity; among them, the C-FL value uniformly numbers the C-FL from different ONUs according to the PON logical port and other information.

The ONU/OLT classifies according to the C-FL in different IPv6 flow label domains, and maps the data packets of the same C-FL in the IPv6 flow label domain to the same PON logical port. The PON logical port can realize user isolation, and the PON logical port can Realize the management and control of service quality information for each user.

In this embodiment, when the transmission direction is the uplink direction, the OLT can also convert the flow label and modify the S-FL field.

Further, for the upstream direction from ONU to OLT, the GEM port needs to be mapped to T-CONT in one of the following ways:

Different GEM-PORTs are mapped into different T-CONTs according to the relationship of 1:1;

Different GEM-PORTs are mapped into the same T-CONT according to the relationship of N:1;

ONU maps GEM PORT to different T-CONT according to TC, that is, GEM PORT with the same service type is mapped to the same T-CONT.

The IPv6-to-PON mapping method provided by the embodiment of the present invention solves the needs of the prior art by classifying the quality of service information in the data packets and mapping them to different logical ports, and mapping the IPv6 data packets to the PON through a quality of service once. Only through two quality of service mappings can PON bear the weight of IPv6 data packets, which is a problem of complexity and high processing cost. And when the direction of the transmission data packet is the uplink direction, since only the data received from the legal port is converted into the service type, the access of illegal users is also prevented.

As shown in Figure 11, the embodiment of the optical network unit of the present invention includes:

Receiving/sending module 1101: used to receive/send network protocol version 6 data flow, the data flow includes at least one data packet, wherein the data packet includes service quality information;

Data packet classification module 1102: used to classify the data packets received by the receiving/sending module 1 according to the network protocol version 6 service quality information;

Mapping module 1103: used to map data packets to PON logical ports that can meet quality of service requirements according to the quality of service information;

Service type conversion module 1104: used to convert the network protocol version 6 user service type received from the legal port to the operator service type, or convert the operator service type to the user service type;

Flow label configuration module 1105: configured to set the user flow label field and/or service flow label field and their corresponding values in the network protocol version 6 flow label field before receiving the network protocol version 6 data flow.

As shown in Figure 12, the embodiment of the optical path termination point of the present invention includes:

Receiving/sending module 1201: used to receive/send network protocol version 6 data flow, the data flow includes at least one data packet, wherein the data packet includes service quality information;

Data packet classification module 1202: used to classify the data packets received by the receiving/sending module 1 according to the network protocol version 6 service quality information;

Mapping module 1203: used to map data packets to PON logical ports that can meet quality of service requirements according to the quality of service information;

Service type conversion module 1204: used to convert the network protocol version 6 user service type received from the legal port to the operator service type, or convert the operator service type to the user service type;

Flow label field modifying module 1206: for modifying the user flow label field and/or the service flow label field of the network protocol version 6 flow label field of the data packet received by the receiving module from the legal port.

The optical network unit and the optical path termination point provided by the embodiment of the present invention map the IPv6 data packet to the PON through one quality of service by classifying the quality of service information in the data packet and mapping them to different logical ports respectively, which solves the problem of the prior art Two QoS mappings are required to realize PON’s carrying of IPv6 data packets, which is complicated and expensive to deal with. And when the direction of the transmission data packet is the uplink direction, since only the IPv6 data packet received from the legal port is converted into the service type field, the access of illegal users is also prevented.

Those of ordinary skill in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, etc. disc or disc, etc.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (8)

1. A quality of service mapping method from network protocol version 6 to passive optical network, characterized in that, comprising: Receiving an Internet protocol version 6 data flow, the data flow includes at least one data packet, wherein the data packet includes Internet protocol version 6 quality of service information, and the Internet protocol version 6 quality of service information includes Internet protocol version 6 service type information, Internet protocol version 6 One or a combination of user address information, network protocol version 6 flow label information; Mapping data packets to passive optical network logical ports that can meet quality of service requirements according to the quality of service information; The mapping of the data packets to the passive optical network logical ports that can meet the quality of service requirements according to the quality of service information includes: Classify according to network protocol version 6 user addresses and service types; Map the data packets with the same network protocol version 6 user address and the same service type to the same port; Or, classify according to network protocol version 6 service type; Map packets with the same service type of network protocol version 6 to the same port; Alternatively, classify based on Internet Protocol Version 6 user addresses; Map packets with the same user address of Internet protocol version 6 to the same port; Or, classify according to network protocol version 6 user address and flow label information; Map the data packets with the same network protocol version 6 user address and the same flow label information to the same port. 2. a kind of network protocol version 6 according to claim 1 to the quality of service mapping method of passive optical network, it is characterized in that, described service type comprises: the type of user service identified by the user or home gateway, Or the operator service type identified by the optical network unit or the optical path termination point. 3. A method for mapping network protocol version 6 to the quality of service of a passive optical network according to claim 2, characterized in that, when the transmission direction is the uplink direction, the data packet is processed according to the network protocol version 6 quality of service information After classification also includes: Convert the network protocol version 6 user service type received from the legal port to the operator service type; When the transmission direction is the downlink direction, after classifying the data packets according to the network protocol version 6 service quality information, it also includes: Converting the network protocol version 6 operator service type of the received data packet into the user service type; And/or, when the transmission direction is the uplink direction, before receiving the network protocol version 6 data stream, further include: Set the user flow label field in the network protocol version 6 flow label field, which is used to modify the user flow label field of the network protocol version 6 data packet received from the legal port after receiving the network protocol version 6 data flow, to indicate The data packet is from a legitimate user; And/or, when the transmission direction is the uplink direction, before receiving the network protocol version 6 data flow, it also includes: setting the service flow label field in the network protocol version 6 flow label field, which is used to receive the network protocol version 6 data flow Afterwards, the service flow label field of the network protocol version 6 data packet received from the legal port is modified to distinguish different service flows under the same user, or to indicate different OLTs that the data packet passes through; And/or, when the transmission direction is the uplink direction, after receiving the network protocol version 6 data stream, further include: Modify the user flow label field and/or service flow label field of the network protocol version 6 data packet received from the legal port. 4. a kind of network protocol version 6 according to claim 1 to the quality of service mapping method of passive optical network, it is characterized in that, When the passive optical network is an Ethernet passive optical network or a next-generation Ethernet passive optical network, the logical port of the passive optical network is a logical link identifier; When the passive optical network is a gigabit passive optical network or a next-generation gigabit passive optical network, the passive optical network logic port is a gigabit passive optical network encapsulation port. 5. A quality of service mapping system from network protocol version 6 to passive optical network, characterized in that, comprising: Receiving/sending module: used to receive/send network protocol version 6 data flow, the data flow includes at least one data packet, wherein the data packet includes service quality information; A mapping module, configured to map data packets to passive optical network logical ports that can meet quality of service requirements according to the quality of service information; The QoS mapping system from network protocol version 6 to passive optical network also includes: The data packet classification module is used to classify the data packets received by the receiving module according to the network protocol version 6 service quality information; and / or, Service type conversion module: used to convert the network protocol version 6 user service type received from the legal port to the operator service type, or convert the operator service type to the user service type; and / or, Flow label field modification module: used to modify the user flow label field and/or service flow label field of the network protocol version 6 flow label field of the data packet received by the receiving module from the legal port; and / or, Flow label configuration module: used to configure and set the user flow label field and/or service flow label field and their corresponding values in the network protocol version 6 flow label field before receiving the network protocol version 6 data flow. 6. A kind of network protocol version 6 to the service quality mapping system of passive optical network according to claim 5, it is characterized in that, The receiving/sending module, data packet classification module, mapping module, service type conversion module, and flow label configuration module are in the optical network unit; or, characterized in that, The receiving/sending module, data packet classification module, mapping module, service type conversion module, and flow label field modification module are all in the optical path termination point. 7. An optical network unit, characterized in that it comprises: Receiving/sending module: used to receive/send network protocol version 6 data flow, the data flow includes at least one data packet, wherein the data packet includes service quality information; Data packet classification module: used to classify the data packets received by the receiving module according to the network protocol version 6 service quality information; Mapping module: used to map data packets to passive optical network logical ports that can meet quality of service requirements according to the quality of service information; Service type conversion module: used to convert the network protocol version 6 user service type received from the legal port to the operator service type, or convert the operator service type to the user service type; Flow label configuration module: used to configure and set the user flow label field and/or service flow label field and their corresponding values in the network protocol version 6 flow label field before receiving the network protocol version 6 data flow. 8. An optical path termination point, comprising: Receiving/sending module: used to receive/send network protocol version 6 data flow, the data flow includes at least one data packet, wherein the data packet includes service quality information; Data packet classification module: used to classify the data packets received by the receiving module according to the network protocol version 6 service quality information; Mapping module: used to map data packets to passive optical network logical ports that can meet quality of service requirements according to the quality of service information; Service type conversion module: used to convert the network protocol version 6 user service type received from the legal port to the operator service type, or convert the operator service type to the user service type; The flow label field modifying module: used for modifying the user flow label field and/or the service flow label field of the network protocol version 6 flow label field of the data packet received by the receiving module from the legal port.

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