CN100433646C

CN100433646C - Method for communication port back up while IP transmission

Info

Publication number: CN100433646C
Application number: CNB2005100971247A
Authority: CN
Inventors: 秦圣奕
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2005-12-30
Filing date: 2005-12-30
Publication date: 2008-11-12
Anticipated expiration: 2025-12-30
Also published as: CN1859163A

Abstract

The present invention provides a communication apparatus data transmission interface backing up method in IP transmission, which comprises the steps that a network device and a relative IP apparatus respectively set the properties of respective communication ports, wherein the properties of the ports comprise the relationship of main ports and standby ports, wherein the main ports are used for sending and receiving network messages; the network device checks the situation of a wave carrier of the main port of the network device and judges whether the wave carrier is interrupted or not; if the wave carrier is interrupted, a next step is executed; if the wave carrier is not interrupted, the current step is continuously executed; the original backup ports of the network device and the relative IP device are used as new main ports for sending and receiving network messages. The method is suitable for a next generation IP network with a QoS mechanism, particularly the WCDMA network in an R5 version. The method of the present invention can raise the reliability of the ports of the communication devices for the IP transmission and became an important factor for ensuring the very reliable service quality of telecommunication.

Description

The method that when a kind of IP transmits communication port is backed up

Technical field

The present invention relates to moving communicating field, the method that during particularly a kind of IP transmission the data transmission interface of communication equipment is backed up.

Background technology

Mobile communication system need provide reliable and stable service for mobile communication subscriber, and requiring its availability index usually is more than 99.999%, promptly reaches the carrier-class reliability, this means that the annual time of interrupting of mobile communication system is no more than 5 minutes.In order to reach this target, the operator of mobile communication has taked a lot of measures to improve the reliability and the serviceability index of the hardware and software of mobile communication system, and wherein the measure of hardware aspect comprises and selects for use high reliability device, configuring redundancy module as backup; The measure of software aspect comprises CMM quality control and complete testing authentication; The measure of serviceability aspect comprises dynamic-configuration and the shortening update time etc. that resets.

The configuring redundancy module has multiple as backup with the specific implementation of the reliability that improves hardware device, comprising: the 1) backup of communication port, be also referred to as the port backup, multiple service platform (MSP) backup as optical communications port, by the switching between one or more backup ports and main port and the backup port is set, realize 1+1, N+1,1: 1 or 1: the backup of N port; 2) backup of communication link as automatic translation and protection (APS) backup of asynchronous mode transmission (ATM) system, by the configuration protection link, provides the fault detect and the Switchover mechanism of active link and protection link, realizes link backup; 3) resource pool is shared the backup of mode, by a plurality of ports or communication link bonding are used together, can avoid Single Point of Faliure that whole system is impacted, as link aggregation (link aggregation) technology and multirouting load sharing technology etc.

Along with variation and the development that technology is maked rapid progress, mobile communication system is also among constantly developing.Develop into the third generation (3G) mobile communications network of today from initial first generation mobile communications network through the second generation (2G) mobile communications network, and the 3G mobile communications network is in also in the continuous evolution.Wideband Code Division Multiple Access (WCDMA) (WCDMA) technology is as one of mainstream technology of 3G mobile communication, also from initial R99 version, constantly along R4, R5, R6...... to higher version smooth evolution.Corresponding to the WCDMA system of each version, corresponding hardware device backup scheme be arranged.

Present WCDMA system adopts the ATM transmission technology based on R99 or R4 version, and the multiplexing backup functionalitys such as (IMA) of the backup of fiber optic network port, APS, anti-phase ATM based on the ATM transmission can be provided, and guarantees the reliability of mobile communication system.

The WCDMA system of R5 version adopts (NGN) IP transmission technology of future generation.From topological level, IP network is divided into Access Layer, convergence-level and core layer.Access Layer provides and inserts and local function of exchange, as community's asymmetric digital subscriber line (ADSL) access, the access of building Local Area Network etc.; Convergence-level provides the message switching and the routing function of convergence-level, sends to core layer after going upward to the traffic aggregation of core layer; Core layer provides the message switching and the routing function of core layer.Biplane and the choosing of route connection are the conventional means that IP network improves availability.So-called biplane is meant that convergence-level, core layer provide biplane, and Access Layer inserts biplanar convergence-level simultaneously, avoids single convergence-level to break down and causes whole network paralysis; Convergence-level inserts biplanar core layer simultaneously, avoids single core layer to break down and causes whole network paralysis.At user's leading-out terminal of Access Layer, for the consideration of reliability and cost, generally do not have redundant configuration, as use two ADSL, two netting twines etc.

The mode of general biplane that adopts and the choosing of route connection all belongs to the link level backup in the tradition IP network, and the shortcoming of this backup mode is that equipment dependability is poor, and the assurance of service quality (QoS) also can't be provided.Different with traditional IP network is, the NGN IP network will provide QoS mechanism, satisfy the transmission demand of voice, Media Stream, data service, and this just requires the network equipment carrier-class reliability to be provided, to provide bearer channel and service guarantees according to user's signatory attribute.Because bearer channel is definite, network message is not careless forwarding just, and is to use definite passage, satisfies bandwidth, time delay, shake and packet loss demand.

When 3G network carries out the IP networking at present, be extensive use of link aggregation and multirouting load sharing technology, these two kinds of technology all belong to the resource pool technology, can realize backup functionality.The resource pool technology is a kind of load sharing technology, for the business data flow of avoiding forming by network message out of order, need to adopt and send out technology by circulation, it is the identification services data flow, and different business data flows is distributed in fixing link separately, guarantee that same business data flow sends at the port of determining.The processing mode of this load sharing has objectively increased the complexity of router and terminal equipment, needs to expend a lot of handling properties simultaneously, causes the decreased performance of equipment.

Comparatively speaking, the port backup mode can realize that not only network message uses the link of determining to send, and handles simply, can simplify the processing complexity of relevant device, improves the equipment integral performance.And along with the WCDMA system progressively evolves to the R5 version, need a whole set of port backup scenario based on the IP transmission, still, also there is blank in this technology on the one hand at present.

Summary of the invention

In view of this, the objective of the invention is to, propose a kind of method that communication port is backed up, can under the prerequisite that guarantees transmission reliability, carry out hardware backup based on IP transmission, reduce the consumption of handling complexity and handling resource simultaneously, improve the performance of equipment integral.

The inventive method comprises the steps:

A, the network equipment and the relevant IP device port attribute that comprises the master-backup port relation separately is set, the described network equipment and relevant IP device adopt main port transceiver network message;

B, the described network equipment check the carrier wave situation of self main port, judge whether carrier wave interrupts, if, execution in step C then; Otherwise, continue execution in step B;

C, the described network equipment are enabled backup port, and notify described relevant IP device to initiate main port and standby port is switched, the described network equipment and relevant IP device with original backup port as new main port transceiver network message.

Different with the attribute of relevant IP device itself according to the concrete latticed form and the network equipment that the port of the described network equipment and relevant IP device is connected, the concrete operations of the inventive method are also different thereupon.

If the port of the described network equipment and relevant IP device is connected Ethernet, and the MAC Address of port can change, and port attribute then is set described in the steps A further comprises: IP address and MAC Address that the port of the network equipment and relevant IP device is set;

Further comprise before the transceiver network of main port described in the steps A message:

A1, the network equipment use main port to send the ARP message that comprises described network equipment main port IP address and MAC Address to the main port of relevant IP device;

After A2, IP device are received the ARP message, in the ARP equipment list that deposits the IP address and the MAC Address of described network equipment main port in self;

Described in the step C original backup port is further comprised as new main port:

C1, the network equipment respectively as the IP address and the MAC Address of backup port, and remove the IP address and the MAC Address of former main port with the IP address of former main port and MAC Address;

The backup port of C2, the network equipment sends the ARP message that comprises network equipment backup port IP address and MAC Address to the backup port of IP device correspondence;

C3, IP device are received behind the ARP message ARP equipment list that upgrades self according to message content.

If the port of the described network equipment and relevant IP device is connected Ethernet, and the MAC Address of port can not change, and port attribute then is set described in the steps A further comprises: the IP address that the port of the network equipment and relevant IP device is set;

C1, the network equipment are with the IP address as backup port, the IP address of former main port, and the IP address of removing former main port;

Preferably, the number of described main port is more than or equal to 1.

Preferably, the number of described backup port is more than or equal to 1.

If the port of the described network equipment and relevant IP device is connected transmitted in packets based on synchronous optical network (Packet Over SONET, POS) network, and the described network equipment or relevant IP device are not supported MSP;

The attribute that port then is set described in the steps A further comprises: the point-to-point transmission agreement PPP information that the network equipment and relevant each port of IP device are set;

Described in the step C original backup port is further comprised as new main port: backup port is appointed as main port, and uses the new main port of the network equipment and relevant IP device correspondence to carry out ppp negotiation, set up ppp link.

If the port of the described network equipment and relevant IP device is connected the POS network, and the described network equipment is all supported MSP with relevant IP device;

Described in the step C original backup port is further comprised as new main port: use multiple service platform MSP mode to initiate active and standby port switching, and use the new main port of the network equipment and relevant IP device correspondence to initiate ppp negotiation, set up ppp link.

Preferably, the number of described backup port is more than or equal to 1.

Preferably, the above network equipment is a radio network controller.

Preferably, the above relevant IP device is a router.

As can be seen from the above technical solutions, the present invention is by being provided with the active and standby port of using, detect the carrier wave of main port in real time, when finding that carrier wave interrupts, just continue the transceiver network message with backup port as new main port at once, thereby reach the purpose that port is backed up.The inventive method can improve the communication apparatus port reliability of IP transmission, important factor during the service quality that becomes carrier level reliability guarantees.And the inventive method is simple, and cost is low, is convenient to use.

Description of drawings

Figure 1 shows that WCDMA network connection diagram;

Figure 2 shows that the workflow diagram of first embodiment of the invention to the communication port backup;

Figure 3 shows that the workflow diagram of second embodiment of the invention to the communication port backup.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is further elaborated below in conjunction with accompanying drawing.

(Universal Mobile Telecommunication System is the 3-G (Generation Three mobile communication system) that adopts the WCDMA air interface technologies UMTS) to universal mobile telecommunications system, also the UMTS system is called the WCDMA communication system usually.The UMTS system has adopted and the similar structure of second generation mobile communication system, and its network is formed as shown in Figure 1, comprises Radio Access Network (Radio AccessNetwork, RAN) 113 and core network (Core Network, CN) 114.

Wherein, all voice calls are connected with data in the CN114 processing UMTS system, and the exchange of realization and external network and routing function.CN is from being divided into circuit commutative field (CircuitSwitched Domain, CS) 110 and packet-switched domain (Packet Switched Domain, PS) 111 in logic.RAN 113 is called land radio access web (UTRAN) usually again, comprises one or several RNS (RNS).RNS 112 shown in Fig. 1 is made up of base station (Node B) 105, base station 106, base station 107 and radio network controller (RNC) 109.RNC is used to distribute and is attached thereto with control or the Radio Resource of relevant base station, finish functions such as connection foundation and release, soft handover, RRM, the base station is used to connect user terminal (UE), transmits the data flow between UE and the RNC, also participates in a part of RRM simultaneously.Interface between RNC and the CN is the Iu interface, and the base station is connected by Iub interface with RNC, is connected by the Uu interface between base station and the UE.In UTRAN inside, interconnected between the RNC by the Iur interface.Above-described RNC is connected with miscellaneous equipment, comprises RNC and CN, RNC and base station, two RNC being connected each other, can be carried by the NGN IP network in the WCDMA of R5 version system.

The embodiment of the invention is an example with the port of RNC, specifies the method that under the IP transmission means port is backed up adopting.The network carrying form that adopts IP to transmit has multiple, below in conjunction with the method for concrete network carrying formal specification port backup.

Embodiment one: the backup method of RNC port under the IP transmission means of Ethernet bearing.

In the present embodiment, the type of port can be divided into ETH, FE or GE port, and the backup mode of being supported has 1+1, N+1 or N+k.So-called N+k mode is meant and adopts k redundancy port as backup port, for N main port backs up.Under the normal operating conditions, this k port all is in non operating state, has only this N main port transceiver network message; When some or several the breaking down in the main port, substitute the port transceiver network message that breaks down with backup port.Because the situation that common once more than one port breaks down simultaneously seldom, reduces cost in order to reduce redundance unit, usually k is made as 1 and is the N+1 mode, if N is 1, represents that then a redundancy port is that a main port backs up as backup port.

For convenience, shown in Figure 2 is the concrete workflow that example explanation RNC carries out the port backup in the 1+1 mode, specifically comprises the steps:

Step 201: be respectively RNC and IP device configuration port attribute separately, comprising: interconnective a pair of port is a main port between appointment RNC and the IP device, and another is a backup port to interconnective port, that is: the main and standby relation of configured port; Also comprise the IP address of specifying main port.For the situation that the port mac address can be changed, also to specify the MAC Address of main port.

Here, IP device is meant equipment relevant with RNC in the IP network, is generally router.

Step 202:RNC uses main port to send the ARP(Address Resolution Protocol) message to the main port of IP device, includes the IP address and the MAC Address of RNC main port in this message; After IP device is received the ARP message, in the ARP equipment list that deposits the IP address and the MAC Address of RNC main port in self; Afterwards, RNC equipment and IP device use main port separately is as working port transceiver network message.

Step 203: in the process of transceiver network message, RNC checks the carrier wave of self working port judge whether carrier wave interrupts, if do not have, illustrates that operating state is normal, continuation execution in step 203; Interrupt if find carrier wave, illustrate that current working port breaks down, then execution in step 204.

Step 204:RNC enables backup port, and the IP address and the MAC Address of former working port are moved to backup port, removes the IP address and the MAC Address of former working port; And use the backup port of being moved to send the ARP message to the backup port of IP device correspondence, comprise the IP address and the MAC Address of this backup port of RNC in the ARP message.

Here, described migration is meant the IP address of backup port and IP address and the MAC Address that MAC Address is set to former working port.

Step 205:IP equipment receives the ARP message, upgrades the ARP equipment list of self according to the ARP message.

Step 206:RNC and IP device all use backup port as new working port transceiver network message.

Above-mentioned workflow can be generalized to the port backup method of N+1 or N+k mode easily, so give unnecessary details no longer one by one.

In handling process shown in Figure 2,, then in the step 201, needn't specify MAC Address for main port and directly use the MAC Address of this main port self if the port mac address can not be changed; Accordingly, the processing of step 204 becomes: RNC enables backup port, and the IP address transfer of former working port to backup port, is removed the IP address of former working port; And use the backup port of being moved to send the ARP message to the backup port of IP device correspondence, carry the IP address and the MAC Address of this backup port of RNC in the ARP message.Here, entrained MAC Address is the MAC Address of backup port self in the ARP message.

Embodiment two: based on transmitted in packets (Packet Over SONET, POS) backup method of RNC device port under the IP transmission means of the network carrying of synchronous optical network.

Present embodiment is supported 1: 1 or 1: the port backup mode of N.So-called 1: the N mode is meant when using a main port as working port transceiver network message, use N backup port to be used for the lower business of transmission priority, when main port breaks down, in backup port, reassign one and be main port, when N=1, be 1: 1 mode.

For 1: 1 or 1: the N mode, can use the port of the MSP mode of synchronous digital hierarchy (SDH) or point-to-point transmission agreement (PPP) mode to move and realize the port backup.

Be example with the port backup of adopting 1: 1 mode below, its workflow is described, the scheme of present embodiment middle port migration is for adopting the MSP mode.Concrete workflow comprises the steps: as shown in Figure 3

Step 301: be respectively RNC and IP device configuration port attribute separately, port attribute comprises the PPP information of main and standby relation, active and standby port.Here, the mode of described configured port main and standby relation is identical with step 201, and described IP device is generally router.

Step 302:RNC initiates ppp negotiation at main port, sets up ppp link, sends network message with this main port to the main port of IP device.

Step 303: in the process of transceiver network message, RNC checks the carrier wave of main port judge whether carrier wave interrupts, if do not have, illustrates that operating state is normal, continuation step 303; Interrupt if find carrier wave, illustrate that current main port breaks down, then execution in step 304.

Step 304:RNC enables backup port, uses MSP notice IP device initiation main port and backup port to switch, and then the original main port of RNC and IP device becomes backup port, and backup port becomes main port.

Step 305:RNC and IP device use the main port of respectively making a fresh start to carry out the ppp negotiation on upper strata, set up ppp link.

Step 306:RNC and IP device use new main port transceiver network message.

If RNC or IP device are not supported the MSP mode, then after step 303, directly determine RNC and the new main port of IP device by the mode of appointment, and then execution in step 305 and step 306 successively.Adopt the mode of direct appointment, the reaction time that rebulids ppp link can be longer, but also within the acceptable range, the mode of the direct appointment of this kind is above-mentioned employing PPP mode and carries out the mode that the port migration realizes the port backup.

Above-mentioned workflow can be generalized to 1 easily: the port backup method of N mode, so repeat no more.

The backup method of RNC device port can also adopt the 1+1 mode under the IP transmission means of the POS network carrying.The POS network uses optical fiber as Network Transfer Media, for the 1+1 mode, requires RNC and relevant IP device support to adopt two optical fiber transmission network message simultaneously, and the recipient of message selects these two optical fiber corresponding port.

More than among two embodiment, only the port with RNC is an example, in fact, this method can expand to the port of the various communication network devices of using the IP transmission in the 3G communication network.This method is specially adapted to adopt in the NGN IP network that has QoS mechanism.

By using the inventive method, can improve the communication apparatus port reliability of IP transmission, important factor during the service quality that becomes carrier level reliability guarantees.And the inventive method is simple, and cost is low, is convenient to use.

The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims

To the method for communication port backup, it is characterized in that this method comprises the steps: when 1, a kind of IP transmits

A, the network equipment and the relevant IP device port attribute that comprises the master-backup port relation separately is set, the described network equipment and relevant IP device adopt main port transceiver network message;

B, the described network equipment check the carrier wave situation of self main port, judge whether carrier wave interrupts, if, execution in step C then; Otherwise, continue execution in step B;

C, the described network equipment are enabled backup port, and notify described relevant IP device to initiate main port and standby port is switched, the described network equipment and relevant IP device with original backup port as new main port transceiver network message.
2, method according to claim 1 is characterized in that, the port of the described network equipment and relevant IP device is connected Ethernet;

Port attribute then is set described in the steps A further to be comprised: IP address and MAC Address that the port of the network equipment and relevant IP device is set;

Further comprise before the transceiver network of main port described in the steps A message:

A1, the network equipment use main port to send the ARP message that comprises described network equipment main port IP address and MAC Address to the main port of relevant IP device;

After A2, IP device are received the ARP message, in the ARP equipment list that deposits the IP address and the MAC Address of described network equipment main port in self;

Described in the step C original backup port is further comprised as new main port:

C1, the network equipment respectively as the IP address and the MAC Address of backup port, and remove the IP address and the MAC Address of former main port with the IP address of former main port and MAC Address;

The backup port of C2, the network equipment sends the ARP message that comprises network equipment backup port IP address and MAC Address to the backup port of IP device correspondence;

C3, IP device are received behind the ARP message ARP equipment list that upgrades self according to message content.
3, method according to claim 1 is characterized in that, the port of the described network equipment and relevant IP device is connected Ethernet;

Port attribute then is set described in the steps A further to be comprised: the IP address that the port of the network equipment and relevant IP device is set;

Further comprise before the transceiver network of main port described in the steps A message:

A1, the network equipment use main port to send the ARP message that comprises described network equipment main port IP address and MAC Address to the main port of relevant IP device;

After A2, IP device are received the ARP message, in the ARP equipment list that deposits the IP address and the MAC Address of described network equipment main port in self;

Described in the step C original backup port is further comprised as new main port:

C1, the network equipment are with the IP address as backup port, the IP address of former main port, and the IP address of removing former main port;

The backup port of C2, the network equipment sends the ARP message that comprises network equipment backup port IP address and MAC Address to the backup port of IP device correspondence;

C3, IP device are received behind the ARP message ARP equipment list that upgrades self according to message content.
4, according to claim 2 or 3 described methods, it is characterized in that the number of described main port is more than or equal to 1.
5, method according to claim 4 is characterized in that, the number of described backup port is more than or equal to 1.
6, method according to claim 1 is characterized in that, the port of the described network equipment and relevant IP device is connected the transmitted in packets POS net of synchronous optical network;

The attribute that port then is set described in the steps A further comprises: the point-to-point transmission agreement PPP information that the network equipment and relevant each port of IP device are set;

Described in the step C original backup port is further comprised as new main port: backup port is appointed as main port, and uses the new main port of the network equipment and relevant IP device correspondence to carry out ppp negotiation, set up ppp link.
7, method according to claim 1 is characterized in that, the port of the described network equipment and relevant IP device is connected the POS net;

The attribute that port then is set described in the steps A further comprises: the point-to-point transmission agreement PPP information that the network equipment and relevant each port of IP device are set;

Described in the step C original backup port is further comprised as new main port: use multiple service platform MSP mode to initiate active and standby port switching, and use the new main port of the network equipment and relevant IP device correspondence to initiate ppp negotiation, set up ppp link.
8, according to claim 6 or 7 described methods, it is characterized in that the number of described backup port is more than or equal to 1.
According to claim 1,2,3,6 or 7 described methods, it is characterized in that 9, the described network equipment is a radio network controller.
According to claim 1,2,3,6 or 7 described methods, it is characterized in that 10, described relevant IP device is a router.
11, method according to claim 1 is characterized in that, the network equipment is enabled backup port described in the step C, and notifies described relevant IP device to initiate main port and standby port and switch specifically and comprise:

Radio network controller is enabled backup port, uses multiple service platform MSP notice IP device initiation main port and backup port to switch.