CN102769934B - Method and system based on PPP for protecting transfer layer link - Google Patents

Abstract

The present invention relates to a method and system for guaranteeing transport layer links based on the PPP protocol. The method includes: after the physical connection between the base station NodeB and the radio network controller RNC is established, the base station NodeB and the radio network controller RNC are based on point The point-to-point protocol PPP negotiation obtains the role identification used to represent its role respectively, wherein the base station NodeB obtains the client role identification, and the radio network controller RNC obtains the server role identification; the base station NodeB and the radio network controller RNC obtain the server role identification according to their respective interact with the role id. In the present invention, by assigning roles to the radio network controller RNC and the base station NodeB, the base station NodeB that obtains the role identifier of the client can obtain a valid IP, and establishes an operation and maintenance channel with the radio network controller RNC that obtains the server role identifier through the IP, directly from The radio network controller RNC allocates other parameters, which reduces the complexity of the interconnection between the radio network controller RNC and the base station NodeB.

Description

Method and system for guaranteeing transport layer link based on PPP protocol

technical field

The present invention relates to the field of 3G UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System) wireless communication, specifically, provides a method and system for guaranteeing transmission layer links based on PPP protocol, through PPP point-to-point protocol (Point to Point Protocol (referred to as PPP protocol), the RNC (Radio Network Controller, wireless network controller) and NodeB (base station) at both ends of the link perform role configuration, and improve the PPP negotiation to allocate and manage the IP address of the wide area network for the network transport layer application.

Background technique

The PPP protocol is a link layer protocol that carries network layer data packets on point-to-point links. Its advantages are simplicity, user authentication capabilities, and IP allocation. It is currently one of the most widely used protocols on the WAN. One, it is also a protocol widely used in the current 3G UMTS system, used to transmit wireless signaling and data between RNC and NodeB.

The PPP protocol provides full-duplex operation and delivers packets in order. Its purpose is mainly to establish a point-to-point connection to send data through dial-up or dedicated line, making it a common solution for simple connections between various hosts, bridges and routers. It can work under any interface that supports PPP encapsulation, such as serial port, BRI/PRI interface of ISDN (Integrated Services Digital Network, Integrated Services Digital Network), etc. In addition, it can also include PPPoX (such as PPPoE, PPPoA, PPPoFR, etc. ) such virtual interfaces.

The main functions of the PPP protocol are: used to control the establishment of data links; used to allocate and manage IP addresses in the wide area network; to allow multiple network layer routing protocols to be used at the same time; to be able to configure and test data links; Error detection.

Currently, in the UMTS system, the RNC and the NodeB, as two parties in the PPP protocol, are in an equal position during the process of PPP link negotiation. IP address, so that the RNC and NodeB cannot establish a transmission channel, and the terminal cannot call in.

Contents of the invention

The purpose of the present invention is to provide a method and system for guaranteeing transport layer links based on the PPP protocol. The method and system for ensuring transport layer links based on the PPP protocol proposed by the present invention is to allow PPP to communicate with the radio network controller RNC according to the base station NodeB. IPs are assigned and managed by different roles of the network, ensuring that the transport layer can use the IPs to send and receive data effectively on the basis of point-to-point connections.

In order to achieve the purpose of the present invention, the present invention adopts the following technical solutions to realize:

A method for guaranteeing a transport layer link based on the PPP protocol, comprising:

After the physical connection between the base station NodeB and the radio network controller RNC is established, the base station NodeB and the radio network controller RNC respectively obtain the role identifiers used to represent their roles based on the point-to-point protocol PPP negotiation, wherein the base station NodeB obtains The client role identifier, the radio network controller RNC obtains the server role identifier;

The base station NodeB interacts with the radio network controller RNC according to their respective role identifiers.

Preferably, the base station NodeB and the radio network controller RNC adopt one of E1/T1 and STM1 to form a network.

Preferably, the steps of interacting between the base station NodeB and the radio network controller RNC according to their respective role identifiers include:

The base station NodeB negotiates with the radio network controller RNC on the link control protocol LCP, and agrees on the control parameters of the transmission link layer;

The protocol stacks of the base station NodeB and the radio network controller RNC obtain their respective role identifiers, and perform network control protocol NCP negotiation;

The base station NodeB sends a configuration request carrying the original IP to the radio network controller RNC to request the radio network controller RNC to allocate IP resources for it;

The radio network controller RNC responds to the request of the base station NodeB, and allocates a valid IP for the corresponding base station NodeB, sends the valid IP to the base station NodeB, and then sends the valid IP information of the radio network controller RNC to the corresponding base station NodeB;

The radio network controller RNC and the base station NodeB establish a PPP link according to each other's effective IP, and after starting the upper-layer service negotiation, establish an operation and maintenance channel and a service channel.

Preferably, the radio network controller RNC responds to the request of the base station NodeB and allocates a valid IP for the corresponding base station NodeB, sends the valid IP to the base station NodeB, and then sends the valid IP information of the radio network controller RNC to the corresponding base station In the step of NodeB, the base station NodeB receives the latest allocated valid IP and takes it as the only valid IP.

Preferably, when deploying a system network that guarantees transport layer links based on the PPP protocol, there is no need to consider the configuration above the IP layer of the base station NodeB.

A system for guaranteeing transport layer links based on the PPP protocol, including a radio network controller RNC and a base station NodeB, which also includes a PPP control module, wherein,

The PPP control module is used to assign the base station NodeB and the radio network controller RNC based on the point-to-point protocol PPP negotiation between the base station NodeB and the radio network controller RNC after the physical connection is established between the base station NodeB and the radio network controller RNC. A role identifier representing its role, wherein the NodeB assigns a client role identifier, and the radio network controller RNC assigns a server role identifier, so that the base station NodeB and the radio network controller RNC interact according to their respective role identifiers.

Preferably, the base station NodeB and the radio network controller RNC adopt one of E1/T1 and STM1 to form a network.

Preferably, after the PPP control module assigns role identifiers to the base station NodeB and the radio network controller RNC respectively, the steps for the base station NodeB and the radio network controller RNC to interact according to their respective role identifiers include:

The base station NodeB negotiates with the radio network controller RNC on the link control protocol LCP, and agrees on the control parameters of the transmission link layer;

The protocol stacks of the base station NodeB and the radio network controller RNC obtain their respective role identifiers, and perform network control protocol NCP negotiation;

The base station NodeB sends a configuration request carrying the original IP to the radio network controller RNC to request the radio network controller RNC to allocate IP resources for it;

The radio network controller RNC responds to the request of the base station NodeB, and allocates a valid IP for the corresponding base station NodeB, sends the valid IP to the base station NodeB, and then sends the valid IP information of the radio network controller RNC to the corresponding base station NodeB;

The radio network controller RNC and the base station NodeB establish a PPP link according to each other's effective IP, and after starting the upper-layer service negotiation, establish an operation and maintenance channel and a service channel.

Preferably, the radio network controller RNC responds to the request of the base station NodeB and allocates a valid IP for the corresponding base station NodeB, sends the valid IP to the base station NodeB, and then sends the valid IP information of the radio network controller RNC to the corresponding base station In the step of NodeB, the base station NodeB receives the latest allocated valid IP and takes it as the only valid IP.

Preferably, when deploying a system network that guarantees transport layer links based on the PPP protocol, there is no need to consider the configuration above the IP layer of the base station NodeB.

As can be seen from the above-mentioned technical scheme of the present invention, the present invention has the following beneficial effects:

(1) The radio network controller RNC, as the core controller, uniformly allocates IPs for the NodeB management network elements of the base station, and opens up the transmission network through the IP self-negotiation mode of the PPP protocol, so as to avoid the failure of the network due to invalid IPs negotiated at both ends. The problem of reconfiguration greatly reduces maintenance costs.

(2) The base station NodeB (management network element) has a large scale and high service complexity. In the system network deployment, it is not necessary to consider the configuration above the IP layer of the base station NodeB, which can reduce the complexity of deployment.

(3) By assigning roles to the radio network controller RNC and the base station NodeB, the base station NodeB that obtains the client role identifier can obtain a valid IP, and establishes an operation and maintenance channel with the radio network controller RNC that obtains the server role identifier through this IP, directly Allocating other parameters from the radio network controller RNC reduces the complexity of the interconnection between the radio network controller RNC and the base station NodeB.

Description of drawings

FIG. 1 is a schematic diagram of networking between a base station NodeB and a radio network controller RNC;

FIG. 2 is a schematic flow diagram of a method for guaranteeing a transport layer link based on the PPP protocol provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a system for guaranteeing transport layer links based on the PPP protocol provided by an embodiment of the present invention.

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific examples, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention .

According to an embodiment of the present invention, the method for guaranteeing a transport layer link based on the PPP protocol includes the following steps:

(1) Establish a physical connection between the base station NodeB and the radio network controller RNC;

(2) The base station NodeB and the radio network controller RNC obtain the role identifiers used to represent their roles respectively based on the point-to-point protocol PPP negotiation, wherein the base station NodeB obtains the client role identifiers, and the radio network controller RNC obtains the server role identifiers. role identification;

(3) The base station NodeB interacts with the radio network controller RNC according to their respective role identifiers.

In a preferred implementation manner, the NodeB and the radio network controller RNC adopt one of E1/T1 and STM1 to form a network.

For example, as shown in Figure 1, the base station NodeB and the radio network controller RNC are physically connected through an E1 line, and the configuration negotiation process is as follows:

(1) E1/T1 and STM1 connections can be used between the base station NodeB and the radio network controller RNC.

(2) Both ends are configured as PPP mode (can be configured as PlainPPP or Multilink PPP), and the physical connection is consistent;

(3) Setting the roles of the base station NodeB and the radio network controller RNC.

In the embodiment of the present invention, by assigning roles to the base station NodeB and the radio network controller RNC, the base station NodeB that obtains the client role identifier can obtain a valid IP, and establishes an operation with the radio network controller RNC that obtains the server role identifier through the IP The channel is maintained and other parameters are directly allocated from the RNC, which reduces the complexity of the connection between the RNC and the NodeB.

In addition, the radio network controller RNC, as the core controller, uniformly allocates IPs for the NodeB management network elements of the base station, and opens up the transmission network through the IP self-negotiation mode of the PPP protocol, so as to avoid the failure of the network connection due to invalid IPs negotiated at both ends The problem of matching greatly reduces the maintenance cost.

In order to illustrate the spirit of the present invention more clearly, a specific embodiment will be used to describe in detail the method for securing transport layer links based on the PPP protocol provided by the present invention. As shown in Figure 2, the method includes:

S101. Establish a physical connection between the base station NodeB and the radio network controller RNC;

S102, the base station NodeB and the radio network controller RNC perform link control protocol LCP (LinkControl Protocol, link control protocol) negotiation, and agree on the control parameters of the transmission link layer;

S103, the protocol stacks of the base station NodeB and the radio network controller RNC obtain their respective role identifiers, and perform network control protocol NCP (Network Control Protocol, network control protocol) negotiation;

S104, the base station NodeB sends a configuration request carrying the original IP to the radio network controller RNC, so as to request the radio network controller RNC to allocate IP resources for it;

S105, the radio network controller RNC responds to the request of the base station NodeB, and allocates a valid IP for the corresponding base station NodeB, sends the valid IP to the base station NodeB, and then sends the valid IP information of the radio network controller RNC to the corresponding base station NodeB ;

S106. The radio network controller RNC and the base station NodeB establish a PPP link according to the effective IP of each other, and after starting the upper layer service negotiation, establish an operation maintenance channel and a service channel.

Preferably, in said step S105, the radio network controller RNC responds to the request of the base station NodeB and distributes a valid IP for the corresponding base station NodeB, sends the valid IP to the base station NodeB, and then sends the valid IP of the radio network controller RNC In the step of sending the information to the corresponding base station NodeB, the base station NodeB receives the latest allocated valid IP and takes it as the only valid IP.

Preferably, before performing the above steps S101-S106, when implementing the system network deployment based on the PPP protocol to guarantee the transport layer link, it is not necessary to consider the configuration above the IP layer of the base station NodeB.

Correspondingly, the embodiment of the present invention also provides a system for guaranteeing transport layer links based on the PPP protocol, including a radio network controller RNC10 and a base station NodeB20 as shown in FIG. 3 , which also includes a PPP control module 101, wherein

The PPP control module 101 is configured to, after the physical connection is established between the base station NodeB20 and the radio network controller RNC10, assign the base station NodeB20 and the radio network controller RNC10 based on the point-to-point protocol PPP negotiation between the base station NodeB20 and the radio network controller RNC10. A role identifier used to characterize its role, wherein the base station NodeB20 assigns a client role identifier, and the radio network controller RNC10 assigns a server role identifier, so that the base station NodeB20 and the radio network controller RNC10 interact according to their respective role identifiers.

During specific implementation, the PPP control module 101 may be arranged in the radio network controller RNC10, or may be arranged independently of the radio network controller RNC10.

In a preferred implementation process, the base station NodeB20 and the radio network controller RNC10 adopt one of E1/T1 and STM1 to form a network.

Preferably, after the PPP control module 101 assigns role identifiers to the base station NodeB20 and the radio network controller RNC10 respectively, the steps for the base station NodeB20 and the radio network controller RNC10 to interact according to their respective role identifiers include:

(1) The base station NodeB20 negotiates with the radio network controller RNC10 on the link control protocol LCP, and agrees on the control parameters of the transmission link layer;

(2) The protocol stacks of the base station NodeB20 and the radio network controller RNC10 obtain respective role identifiers respectively, and carry out network control protocol NCP negotiation;

(3) The base station NodeB20 sends a configuration request carrying the original IP to the radio network controller RNC10, to request the radio network controller RNC10 to allocate IP resources for it;

(4) The radio network controller RNC10 responds to the request of the base station NodeB20, and allocates a valid IP for the corresponding base station NodeB20, sends the valid IP to the base station NodeB, and then sends the valid IP information of the radio network controller RNC10 to the corresponding base station NodeB20;

Preferably, in this step, the radio network controller RNC10 responds to the request of the base station NodeB20 and allocates a valid IP for the corresponding base station NodeB20, sends the valid IP to the base station NodeB, and then sends the valid IP information of the radio network controller RNC10 In the step of assigning to the corresponding base station NodeB20, the base station NodeB20 receives the latest allocated valid IP and takes it as the only valid IP.

(5) The radio network controller RNC10 and the base station NodeB20 establish a PPP link according to the effective IP of the other party, and after starting the upper-layer service negotiation, establish an operation and maintenance channel and a service channel.

Preferably, the base station NodeB20 (management network element) has a large scale and high business complexity. When performing system network deployment based on the PPP protocol to ensure the transport layer link, it is not necessary to consider the configuration above the IP layer of the base station NodeB20, which can reduce the complexity of deployment .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related All technical fields are equally included in the scope of patent protection of the present invention.

Claims (8)

1. ensure a method for transport layer link based on ppp protocol, it is characterized in that, comprising:

After setting up the physical connection between base station NodeB and radio network controller (RNC), base station NodeB and radio network controller (RNC) obtain based on peer-peer protocol ppp negotiation the role identification characterizing its role respectively, wherein, described base station NodeB obtains client role mark, and described radio network controller (RNC) obtains role server mark;

Base station NodeB and radio network controller (RNC) carry out alternately according to respective role identification;

Base station NodeB and radio network controller (RNC) carry out mutual step according to respective role identification and comprise:

Base station NodeB and radio network controller (RNC) carry out LCP LCP negotiation, decide through consultation the controling parameters of transmitting link layer;

The protocol stack of base station NodeB and radio network controller (RNC) obtains respective role identification respectively, carries out Network Control Protocol NCP negotiation;

Base station NodeB transmission carries the configuring request of former IP to radio network controller (RNC), is its distributing IP resource with request wireless network controller RNC;

The request of radio network controller (RNC) response base station NodeB, and be corresponding base station NodeB allocative efficiency IP, this effective IP is sent to base station NodeB, more effective IP information of radio network controller (RNC) is sent to this corresponding base station NodeB;

Radio network controller (RNC) is set up PPP with effective IP of base station NodeB foundation the other side and is linked, and after startup upper-layer service is consulted, sets up OM channel and service channel.

2. ensure the method for transport layer link as claimed in claim 1 based on ppp protocol, it is characterized in that, described base station NodeB and radio network controller (RNC) adopt the one in E1/T1, STM1 to carry out networking.

3. the method for transport layer link is ensured as claimed in claim 1 based on ppp protocol, it is characterized in that, radio network controller (RNC) response base station NodeB request and be corresponding base station NodeB allocative efficiency IP, this effective IP is sent to base station NodeB, send in the step of this corresponding base station NodeB by effective IP information of radio network controller (RNC) again, base station NodeB receives this most newly assigned effective IP and it can be used as unique effectively IP.

4. ensure the method for transport layer link as claimed in claim 1 based on ppp protocol, it is characterized in that, when carrying out ensureing that the system of transport layer link is arranged net based on ppp protocol, without the need to considering that the IP layer of base station NodeB configures above.

5. ensure a system for transport layer link based on ppp protocol, comprise radio network controller (RNC) and base station NodeB, it is characterized in that, also comprise PPP control module, wherein,

PPP control module, for set up physical connection between base station NodeB and radio network controller (RNC) after, peer-peer protocol ppp negotiation based on base station NodeB and radio network controller (RNC) is respectively base station NodeB and radio network controller (RNC) and distributes role identification in order to characterize its role, wherein, described base station NodeB distributes client role mark, described radio network controller (RNC) distribution server role identification, makes base station NodeB and radio network controller (RNC) carry out alternately according to respective role identification;

After PPP control module is respectively base station NodeB and radio network controller (RNC) is assigned with role identification, base station NodeB and radio network controller (RNC) carry out mutual step according to respective role identification and comprise:

Base station NodeB and radio network controller (RNC) carry out LCP LCP negotiation, decide through consultation the controling parameters of transmitting link layer;

The protocol stack of base station NodeB and radio network controller (RNC) obtains respective role identification respectively, carries out Network Control Protocol NCP negotiation;

Base station NodeB transmission carries the configuring request of former IP to radio network controller (RNC), is its distributing IP resource with request wireless network controller RNC;

The request of radio network controller (RNC) response base station NodeB, and be corresponding base station NodeB allocative efficiency IP, this effective IP is sent to base station NodeB, more effective IP information of radio network controller (RNC) is sent to this corresponding base station NodeB;

Radio network controller (RNC) is set up PPP with effective IP of base station NodeB foundation the other side and is linked, and after startup upper-layer service is consulted, sets up OM channel and service channel.

6. ensure the system of transport layer link as claimed in claim 5 based on ppp protocol, it is characterized in that, described base station NodeB and radio network controller (RNC) adopt the one in E1/T1, STM1 to carry out networking.

7. the system of transport layer link is ensured as claimed in claim 5 based on ppp protocol, it is characterized in that, radio network controller (RNC) response base station NodeB request and be corresponding base station NodeB allocative efficiency IP, this effective IP is sent to base station NodeB, send in the step of this corresponding base station NodeB by effective IP information of radio network controller (RNC) again, base station NodeB receives this most newly assigned effective IP and it can be used as unique effectively IP.

8. ensure the system of transport layer link as claimed in claim 5 based on ppp protocol, it is characterized in that, when carrying out ensureing that the system of transport layer link is arranged net based on ppp protocol, without the need to considering that the IP layer of base station NodeB configures above.