WO2008110083A1 - Procédé, dispositif et système de transmission permettant une transmission de service d'interface iub sur ip - Google Patents

Procédé, dispositif et système de transmission permettant une transmission de service d'interface iub sur ip Download PDF

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Publication number
WO2008110083A1
WO2008110083A1 PCT/CN2008/070194 CN2008070194W WO2008110083A1 WO 2008110083 A1 WO2008110083 A1 WO 2008110083A1 CN 2008070194 W CN2008070194 W CN 2008070194W WO 2008110083 A1 WO2008110083 A1 WO 2008110083A1
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WO
WIPO (PCT)
Prior art keywords
transmission link
service
backup
primary
link
Prior art date
Application number
PCT/CN2008/070194
Other languages
English (en)
Chinese (zh)
Inventor
Weiping Yan
Zhiquan Chang
Chengxu Guo
Shengyi Qin
Wei Ren
Shaocheng Xiong
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008110083A1 publication Critical patent/WO2008110083A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an Iub interface service transmission method, apparatus, and system based on IP transmission.
  • High Speed Downlink Packet Access referred to as High Speed Downlink Packet Access
  • HSDPA High Speed Uplink Packet Access
  • WCDMA Wideband Code Division Multiple Access
  • ATM asynchronous transfer mode
  • IP Internet Protocol
  • the Iub interface between the base station and the radio network controller forms a split transmission network in the case of IP transmission, as shown in FIG.
  • high QoS transmission services may take the form of a synchronous digital communication network (SD)
  • TDM multiplexed-division technology communication network
  • the physical layer interfaces of multiple access modes appear on the interface, such as interfaces such as El, FE, POS, CPOS, and GE.
  • the main technical problem to be solved by the embodiments of the present invention is to provide a method, device and system for transmitting lub interface services based on IP transmission, thereby ensuring reliability and stability of service transmission between a base station and a radio network controller. .
  • An embodiment of the present invention provides a method for transmitting a lub interface service based on IP transmission, including:
  • An embodiment of the present invention further provides a lub interface service transmission apparatus based on IP transmission, and a communication system including the apparatus, the apparatus comprising:
  • Monitoring module which is used to implement the primary transmission link and backup transmission link of the monitoring service
  • the switching module is configured to perform routing switching on the service on the primary transmission link when the monitoring module detects that the primary transmission link is interrupted and the backup transmission link is normal;
  • the transmission module is configured to perform service transmission on the backup transmission link according to the routing result of the switching module.
  • the primary transmission link and the backup transmission link of the monitoring service are implemented; when the primary transmission link is interrupted, the backup transmission chain is detected.
  • the path is normal, the service on the primary transmission link is switched, and the service is transmitted on the backup transmission link, thereby improving the reliability and stability of service transmission between the base station and the radio network controller.
  • FIG. 1 is a schematic diagram of service transmission between a base station and a radio network controller in the prior art
  • FIG. 2 is a flowchart of a method for transmitting a lub interface service based on IP transmission according to a first embodiment of the present invention
  • FIG. 3 is a bidirectional link used in the method according to the first embodiment of the present invention. Schematic diagram of the monitoring method of forward monitoring technology
  • FIG. 4 is a schematic structural diagram of a lub interface service transmission apparatus based on IP transmission according to a second embodiment of the present invention.
  • different services correspond to different transmission links for branch transmission, and a service corresponding transmission link serves as a primary transmission link of the service, and other The transmission link serves as a backup transmission link for the service, and each service corresponds to a certain priority.
  • the transmission link to which the corresponding interface E1 belongs may be used as the primary transmission link, and other transmission links, such as the interface FE.
  • the associated transmission link acts as a backup transmission link for the voice service.
  • the transmission link to which the interface FE belongs belongs to the data transmission service corresponding to the non-reality requirement and the service priority lower, and the data transmission service is normal. Or use the transmission link to which the interface FE belongs to perform normal transmission.
  • the transmission link may specifically include: a physical layer interface El, FE, POS, CP OS, a transmission link to which the GE belongs, or a transmission link to which other physical layer interfaces belong.
  • the number of primary and backup transmission links can be one primary, one backup, or two transmission links, but can also be set as one primary and secondary backup, three transmission links, or one primary.
  • the destination address identifies the destination address or destination network of the IP packet.
  • Network Mask Together with the destination address, it identifies the address of the network segment where the destination host or router is located. Output Interface Description Which packet will be forwarded from the router?
  • IPs for the same destination there may be several routes with different next hops.
  • the priorities of these non-routing routes may be discovered by different routing protocols or manually configured static routes. High priority (small value) will become the current optimal route
  • the first embodiment of the present invention provides an Iub interface service transmission method based on IP transmission.
  • the technical solution of the embodiment is as follows: E1+FE networking scenario, in E1 +FE
  • the E1 transmits the actual services such as the clock and the voice (hereinafter, the description is convenient, only refers to the voice service), and the FE transmits the non-real data service, and the reliability schemes between the other interfaces are similar.
  • the specific process is shown in Figure 2:
  • Step 1 Really monitor the primary and backup transmission links of the service.
  • the service to be transmitted uses its corresponding primary transmission link for service transmission.
  • the transmission link to which the corresponding E1 interface belongs is used as the primary transmission link for service transmission.
  • the transmission link to which the FE interface belongs is used as its backup transmission link.
  • the transmission link to which the corresponding FE interface belongs is used as the primary transmission link for service transmission, and the transmission link to which the E1 interface belongs is used as its transmission link. Back up the transmission link.
  • the base station Node-B
  • the radio network controller may perform bidirectional link forward detection technology (BFD) to perform real-time monitoring on the primary and backup transmission links.
  • Ethernet OAM can be used (Operations, Administration and
  • Step 2 When the primary transmission link is interrupted and the backup transmission link is normal, the service on the primary transmission link is switched.
  • the Node-B or RNC detects the interruption of the primary transmission link, it needs to perform route switching on the service on the primary transmission link.
  • the priority of the backup transmission link is sequentially performed from high to low, that is, the priority is switched to the highest priority and normal backup transmission link.
  • the primary transmission link where the voice service is located is interrupted, and the backup transmission link is normal, and only one backup transmission link, such as the transmission link to which the FE interface belongs, needs to perform routing switching of the voice service.
  • the route switching method is to compare the priority of the service on the primary transmission link with the priority of the service on the backup transmission link, and preferentially ensure the transmission of the high priority service on the backup transmission link. If the priority of the service on the primary transmission link is higher, the service on the primary transmission link is switched to the backup transmission link; if the priority of the service on the primary transmission link is lower, the backup transmission chain is calculated. The remaining bandwidth of the path is route-switched to the service on the primary transmission link according to the remaining bandwidth.
  • the voice service transmitted on the primary transmission link has a higher priority than the service of the backup transmission link, so the voice service is switched to the backup transmission link.
  • the technical solution provided by the embodiment of the present invention may further include the following steps: when the priority of the service on the primary transmission link is high, the service on the primary transmission link is switched to the backup transmission link. After that, calculating the remaining bandwidth of the backup transmission link; if the priority of the service on the primary transmission link is high, switching the service on the primary transmission link to the backup transmission link, if the primary transmission link If the service on the primary transmission link is greater than the bandwidth of the backup transmission link, the service on the primary transmission link is split and the route is switched.
  • the service on the primary transmission link has a lower priority. In this case, the service on the primary transmission link is switched according to the remaining bandwidth of the backup transmission link. If the backup transmission link has no remaining bandwidth, the service on the primary transmission link is not switched, and the backup transmission is performed. The link also has remaining bandwidth, and then switches the traffic on the primary transmission link that matches the remaining bandwidth.
  • the remaining bandwidth of the backup transmission link may be calculated to determine whether the data service on the original backup transmission link can also be transmitted.
  • Step 3 According to the result of the route switching, perform service transmission on the backup transmission link.
  • the way in which traffic is transmitted on the backup transport link is based on the different conditions of the result of the route switch in step 2. For example, if the priority of the service on the primary transmission link is high, after the service on the primary transmission link is switched to the backup transmission link for transmission, if the backup transmission link has remaining bandwidth, the calculation is performed. The remaining bandwidth of the transmission link is backed up, and the remaining bandwidth is used to transmit the traffic on the backup transmission link. When the priority of the service on the primary transmission link is high, the service on the primary transmission link is switched to the backup transmission link.
  • the service on the primary transmission link is greater than the bandwidth of the backup transmission link, The service on the primary transmission link is split based on the bandwidth of the backup transmission link, and is transmitted on the backup transmission link after being split.
  • the method for routing the service on the primary transmission link according to the remaining bandwidth of the backup transmission link is: If the backup transmission link has no remaining bandwidth, then The service on the primary transmission link is switched. If the backup transmission link has remaining bandwidth, the service on the primary transmission link that matches the remaining bandwidth is switched and transmitted on the backup transmission link.
  • the primary transmission link is preferentially used to transmit its corresponding service, and the network transmission state before the handover is restored.
  • the service on the primary transmission link refers to the service transmitted on the primary transmission link
  • the service on the backup transmission link refers to the service transmitted on the backup transmission link.
  • the technical solution can be extended to include the primary transmission link and the backup transmission link to be accessed. It is also the use of priority comparison for route switching, and then transmission.
  • the method provided by the embodiment of the present invention detects the primary transmission link and the backup transmission link corresponding to a certain service on the premise of the service split transmission, and performs backup transmission when the primary transmission link is interrupted. After the link is normal, the service on the primary transmission link is switched, and the service is transmitted on the backup transmission link. Thereby improving the reliability and stability of the Iub interface service transmission based on IP transmission.
  • the method provided by the embodiment of the present invention is very flexible in realizing the method of monitoring the primary transmission link and the backup transmission link of the service, and realizing the detection of network anomalies in a short period of time.
  • the method provided by the embodiment of the present invention may be based on different QoS or other requirements for different services, and may be adapted to different requirements, and stipulates multiple processing rules of the backup transmission link, and implements different scenarios. application.
  • the second embodiment of the present invention provides an Iub interface service transmission apparatus based on IP transmission
  • FIG. 4 is a schematic structural diagram of the apparatus.
  • the device may specifically include a monitoring module, a switching module, and a transmission module, where:
  • the monitoring module is used to implement the main transmission link and backup transmission link of the monitoring service.
  • the method for monitoring the primary transmission link and the backup transmission link of the monitoring service may be: transmitting BFD control packets for monitoring; or monitoring by using Ethernet OAM technology.
  • the switching module is used when the monitoring module detects that the main transmission link is interrupted and the backup transmission link is normal.
  • the basis for distinguishing different services is different QoS. If there are multiple backup transmission links, the switching module performs routing switching on the services on the primary transmission link, according to The corresponding priority of the backup transmission link is sequentially performed from high to low.
  • the switching module may specifically include:
  • the priority comparison unit is configured to compare the priority of the service on the primary transmission link with the priority of the service on the backup transmission link.
  • the switching unit is configured to switch the service on the primary transmission link to the backup transmission link when the comparison result of the priority comparison unit is that the priority of the service on the primary transmission link is higher.
  • the comparison result of the priority comparison unit is that the priority of the service on the primary transmission link is lower, and the service on the primary transmission link is route-switched according to the remaining bandwidth of the backup transmission link;
  • the switching unit is further configured to: if the priority of the service on the primary transmission link is lower, if the backup transmission link has no remaining bandwidth, the service on the primary transmission link is not switched, if there is any remaining Bandwidth, then switch the traffic on the primary transport link that matches the remaining bandwidth to the backup transport link.
  • the remaining bandwidth calculation unit is used when the comparison result of the service priority comparison unit is the primary transmission link.
  • the service on the lower priority calculate the remaining bandwidth of the backup transmission link;
  • the remaining bandwidth calculation unit is further configured to calculate the backup after the switching unit switches the service on the primary transmission link to the backup transmission link in a case where the priority of the service on the primary transmission link is high. The remaining bandwidth of the transmission link.
  • the switching module can further include:
  • the split processing unit is configured to switch the service on the primary transport link to the backup when the comparison result of the priority comparison unit is that the priority of the service on the primary transmission link is high. On the transmission link, if the service on the primary transmission link is greater than the bandwidth of the backup transmission link, the service on the primary transmission link is split based on the bandwidth of the backup transmission link;
  • the split processing unit is further configured to split the low priority service out of the part of the service that matches the remaining bandwidth according to the remaining bandwidth of the high priority service in the backup transmission link, and use the backup transmission link to transmit .
  • the transmission module is configured to perform the transmission of the service on the backup transmission link according to the route switching result of the switching module.
  • the transmission module may specifically include physical layer interfaces El, FE, POS, CPOS,
  • the transmission module may further comprise a transmission unit of the primary transmission link, corresponding to the respective physical layer interface of the primary transmission link, transmitting the corresponding service.
  • the remaining bandwidth calculation unit and the split processing unit included in the apparatus provided in this embodiment may also be disposed in the apparatus as an independent module of the apparatus.
  • the apparatus provided in this embodiment may be disposed in a base station or a radio network controller.
  • the device can be included in a communication system.
  • the device provided by the embodiment of the present invention detects the primary transmission link and the backup transmission link corresponding to a certain service on the premise of the service split transmission, and performs backup transmission when the primary transmission link is interrupted. After the link is normal, the service on the primary transmission link is switched, and the service is transmitted on the backup transmission link. Thereby improving the reliability and stability of the Iub interface service transmission based on IP transmission.
  • the device provided by the embodiment of the present invention has a very flexible manner of monitoring the primary transmission link and the backup transmission link of the service, and implements detection of network anomalies within a short period of time.
  • the device provided by the embodiment of the present invention realizes full utilization of the transmission resources of the backup transmission link by calculating the remaining bandwidth of the backup transmission link and performing handover routing or transmission services accordingly.
  • the device provided by the embodiment of the present invention may be based on different QoS or other requirements for different services, and may be adapted to different requirements, and stipulates multiple processing rules of the backup transmission link, and implements different scenarios. application.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de transmission permettant une transmission de service d'interface Iub sur l'IP. Les différents services effectuent la transmission de façon séparée correspondant aux différentes liaisons de transmission, et une liaison de transmission correspondant à un type de service fait office de liaison principale de transmission du service, tandis que d'autres liaisons de transmission font office de liaisons de secours de transmission du service, et chaque type de service correspond à une certaine priorité. Lorsque le service est transmis, on surveille en temps réel la liaison principale de transmission et les liaisons de secours de transmission du service ; lorsqu'on constate que la liaison principale de transmission s'interrompt tandis que les liaisons de secours de transmission fonctionnent normalement, on effectue la commutation d'acheminement du service sur la liaison principale de transmission et on effectue la transmission de service sur les liaisons de secours de transmission.
PCT/CN2008/070194 2007-03-12 2008-01-28 Procédé, dispositif et système de transmission permettant une transmission de service d'interface iub sur ip WO2008110083A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710064349.1 2007-03-12
CNB2007100643491A CN100551104C (zh) 2007-03-12 2007-03-12 基于IP传输的Iub接口业务传输方法及装置

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