CN114501513B - Method and system for improving reliability of NG link between base station and core network - Google Patents

Method and system for improving reliability of NG link between base station and core network Download PDF

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Publication number
CN114501513B
CN114501513B CN202210179670.9A CN202210179670A CN114501513B CN 114501513 B CN114501513 B CN 114501513B CN 202210179670 A CN202210179670 A CN 202210179670A CN 114501513 B CN114501513 B CN 114501513B
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base station
link
gnbid
core network
setup
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CN114501513A (en
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陈道来
万兴福
陈翀
卜智勇
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Chengdu Zhongke Micro Information Technology Research Institute Co Ltd
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Chengdu Zhongke Micro Information Technology Research Institute Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • 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
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a method and a system for improving the reliability of an NG link between a base station and a core network, wherein the method comprises the following steps: and improving the reliability of the NG link between the base station and the core network by carrying out the GNBID detection of the base station identifier when the NG link is established between the base station and the core network. The invention perfects the NG link establishment scene between the base station and the core network, solves the problems of user disconnection and access failure caused by GNBID repetition between the base stations, and is beneficial to improving the network use feeling of users and the reliability of NR systems.

Description

Method and system for improving reliability of NG link between base station and core network
Technical Field
The invention relates to the technical field of communication, in particular to a method and a system for improving the reliability of an NG link between a base station and a core network.
Background
A set of messages are defined in the 3GPP wireless NR system 38.413 protocol:
(1) NG SETUP REQUEST (shown in fig. 1, 2);
(2) NG SETUP RESPONSE (shown in fig. 1);
(3) NG SETUP FAILURE (as shown in fig. 2);
an NG link is established between the base station and the core network.
Wherein:
(1) The NG SETUP REQUEST is used for the base station to initiate a NG link establishment REQUEST to the core network, and carries parameters such as the base station identifier (GNBID) and name;
(2) NG SETUP RESPONSE is used for feeding back an operation result to the base station when the core network is successfully established with the NG link, and carrying parameters such as the name of the core network;
(3) The NG SETUP FAILURE is used for feeding back operation results to the base station when the core network fails to establish the NG link, and carrying parameters such as FAILURE reasons.
The main problems existing in the current protocol convention are as follows:
according to the current protocol, if base station a has already established an NG link with the core network, base station B sends an NG SETUP REQUEST (NG SETUP REQUEST) to the core network, carrying the same base station identity GNBID as base station a, the core network will re-establish a connection with base station B and clear the previous links and related data with base station a.
Therefore, the terminal which has been accessed to the base station a before or initiates access on the base station a cannot continue to communicate with the core network, and meanwhile, the base station a cannot sense the abnormality under the existing mechanism, so that the user who has accessed to the network on the base station a is disconnected, and a new user cannot access, thereby greatly affecting the reliability and stability of the whole system.
Disclosure of Invention
The invention aims to provide a method and a system for improving the reliability of an NG link between a base station and a core network, so as to solve the problem of user disconnection and access failure caused by repeated GNBID, thereby improving the reliability of the whole system and improving user experience.
The invention provides a method for improving the reliability of an NG link between a base station and a core network, which comprises the following steps:
and improving the reliability of the NG link between the base station and the core network by carrying out the GNBID detection of the base station identifier when the NG link is established between the base station and the core network.
Further, the step of performing GNBID detection when the NG link is established is to check, when the core network receives an NG SETUP REQUEST message sent by a base station that is to establish the NG link, whether the base station identifier GNBID carried in the NG SETUP REQUEST message is repeated with the base station identifier GNBID of the base station that has already established the NG link with the core network.
Further, if the base station identifier GNBID carried in the NG SETUP REQUEST message is not repeated with the base station identifier GNBID of the base station that has currently established an NG link with the core network, the NG link is normally established, and a NG SETUP RESPONSE message is replied to the base station that is to establish the NG link.
Further, if the base station identifier GNBID carried in the NG SETUP REQUEST message is repeated with the base station identifier GNBID of the base station that has currently established an NG link with the core network, the base station that is to establish an NG link is replied with an NG SETUP FAILURE message.
Further, a Cause cell in the NG SETUP FAILURE message is newly added with a FAILURE Cause value for representing repetition of the base station identifier GNBID; when replying to the NG SETUP FAILURE message to the base station to establish the NG link, the Cause cell in the NG SETUP FAILURE message carries the FAILURE Cause value for indicating repetition of the base station identification GNBID.
The invention also provides a system for improving the reliability of the NG link between the base station and the core network, wherein the system comprises the base station and the core network; the core network is used for detecting the base station identification GNBID when the base station establishes an NG link with the core network.
Further, the core network performing base station identification GNBID detection refers to checking, when the core network receives an NG SETUP REQUEST message sent by a base station that is to establish an NG link, whether the base station identification GNBID carried in the NG SETUP REQUEST message is repeated with the base station identification GNBID of the base station that has established an NG link with the core network currently.
Further, if the base station identifier GNBID carried in the NG SETUP REQUEST message is not repeated with the base station identifier GNBID of the base station that has currently established an NG link with the core network, the NG link is normally established, and a NG SETUP RESPONSE message is replied to the base station that is to establish the NG link.
Further, if the base station identifier GNBID carried in the NG SETUP REQUEST message is repeated with the base station identifier GNBID of the base station that has currently established an NG link with the core network, the base station that is to establish an NG link is replied with an NG SETUP FAILURE message.
Further, a Cause cell in the NG SETUP FAILURE message is newly added with a FAILURE Cause value for representing repetition of the base station identifier GNBID; when replying to the NG SETUP FAILURE message to the base station to establish the NG link, the Cause cell in the NG SETUP FAILURE message carries the FAILURE Cause value for indicating repetition of the base station identification GNBID.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
the invention perfects the NG link establishment scene between the base station and the core network, solves the problems of user disconnection and access failure caused by GNBID repetition between the base stations, and is beneficial to improving the network use feeling of users and the reliability of NR systems.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of success of the 3gpp 38.413 protocol definition NG SETUP REQUEST.
Fig. 2 is a flow chart of a 3gpp 38.413 protocol definition NG SETUP REQUEST failure.
Fig. 3 is a diagram showing the FAILURE cause values used by the 3gpp 38.413 protocol definition NG SETUP FAILURE procedure.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
NG link SETUP (NG SETUP) procedure flaws for the 3gpp 38.413 protocol described previously. As shown in fig. 2, this embodiment proposes a method for improving the reliability of an NG link between a base station and a core network, where the method is:
and improving the reliability of the NG link between the base station and the core network by carrying out the GNBID detection of the base station identifier when the NG link is established between the base station and the core network.
Specifically: the step of detecting the base station identifier GNBID when the NG link is established is to check whether the base station identifier GNBID carried in the NG SETUP REQUEST message is repeated with the base station identifier GNBID of the base station currently establishing the NG link with the core network when the core network receives the NG SETUP REQUEST message sent by the base station to establish the NG link. There are two cases:
(1) If the base station identifier GNBID carried in the NG SETUP REQUEST message is not repeated with the base station identifier GNBID of the base station that has currently established an NG link with the core network, the NG link is normally established, and a NG SETUP RESPONSE message is replied to the base station that is to establish the NG link.
(2) If the base station identifier GNBID carried in the NG SETUP REQUEST message is repeated with the base station identifier GNBID of the base station that has currently established an NG link with the core network, replying an NG SETUP FAILURE message to the base station that is to establish an NG link. Further, a Cause cell in the NG SETUP FAILURE message is newly added with a FAILURE Cause value for representing repetition of the base station identifier GNBID; for example: muletiple-GNBID, as shown in FIG. 3. When replying to the NG SETUP FAILURE message to the base station to establish the NG link, the Cause cell in the NG SETUP FAILURE message carries the FAILURE Cause value for indicating repetition of the base station identification GNBID.
Therefore, the invention perfects the NG link establishment scene between the base station and the core network, solves the problems of user disconnection and access failure caused by GNBID repetition between the base stations, and is beneficial to improving the network use feeling of users and the reliability of NR systems.
Example 2
As shown in fig. 2, this embodiment proposes a system for improving the reliability of an NG link between a base station and a core network, where the system includes the base station and the core network; the core network is used for detecting the base station identification GNBID when the base station establishes an NG link with the core network.
Specifically: the core network performs base station identification GNBID detection, namely when the core network receives an NG SETUP REQUEST message sent by a base station which is to establish an NG link, it checks whether the base station identification GNBID carried in the NG SETUP REQUEST message is repeated with the base station identification GNBID of the base station which has established an NG link with the core network currently. There are two cases:
(1) If the base station identifier GNBID carried in the NG SETUP REQUEST message is not repeated with the base station identifier GNBID of the base station that has currently established an NG link with the core network, the NG link is normally established, and a NG SETUP RESPONSE message is replied to the base station that is to establish the NG link.
(2) If the base station identifier GNBID carried in the NG SETUP REQUEST message is repeated with the base station identifier GNBID of the base station that has currently established an NG link with the core network, replying an NG SETUP FAILURE message to the base station that is to establish an NG link. Further, a Cause cell in the NG SETUP FAILURE message is newly added with a FAILURE Cause value for representing repetition of the base station identifier GNBID; for example: muletiple-GNBID, as shown in FIG. 3. When replying to the NG SETUP FAILURE message to the base station to establish the NG link, the Cause cell in the NG SETUP FAILURE message carries the FAILURE Cause value for indicating repetition of the base station identification GNBID.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (2)

1. A method for improving the reliability of an NG link between a base station and a core network is characterized in that the method comprises the following steps:
the reliability of the NG link between the base station and the core network is improved by carrying out base station identification GNBID detection when the NG link is established between the base station and the core network;
when the core network receives the NG SETUP REQUEST message sent by the base station for establishing the NG link, checking whether the base station identifier GNBID carried in the NG SETUP REQUEST message is repeated with the base station identifier GNBID of the base station which has established the NG link with the core network;
if the base station identifier GNBID carried in the NG SETUP REQUEST message is not repeated with the base station identifier GNBID of the base station which has established the NG link with the core network currently, normally establishing the NG link, and replying NG SETUP RESPONSE message to the base station which is to establish the NG link;
if the base station identifier GNBID carried in the NG SETUP REQUEST message is repeated with the base station identifier GNBID of the base station which has established the NG link with the core network currently, replying a NG SETUP FAILURE message to the base station which is to establish the NG link;
the Cause cell in the NG SETUP FAILURE message is added with a FAILURE Cause value for representing repetition of the base station identifier GNBID; when replying to the NG SETUP FAILURE message to the base station to establish the NG link, the Cause cell in the NG SETUP FAILURE message carries the FAILURE Cause value for indicating repetition of the base station identification GNBID.
2. A system for improving the reliability of an NG link between a base station and a core network, the system comprising the base station and the core network; the core network is used for detecting a base station identifier GNBID when the base station establishes an NG link with the core network;
the core network performs base station identification GNBID detection, namely when the core network receives an NG SETUP REQUEST message sent by a base station for establishing an NG link, whether the base station identification GNBID carried in the NG SETUP REQUEST message is repeated with the base station identification GNBID of the base station for establishing the NG link with the core network currently;
if the base station identifier GNBID carried in the NG SETUP REQUEST message is not repeated with the base station identifier GNBID of the base station which has established the NG link with the core network currently, normally establishing the NG link, and replying NG SETUP RESPONSE message to the base station which is to establish the NG link;
if the base station identifier GNBID carried in the NG SETUP REQUEST message is repeated with the base station identifier GNBID of the base station which has established the NG link with the core network currently, replying a NG SETUP FAILURE message to the base station which is to establish the NG link;
the Cause cell in the NG SETUP FAILURE message is added with a FAILURE Cause value for representing repetition of the base station identifier GNBID; when replying to the NG SETUP FAILURE message to the base station to establish the NG link, the Cause cell in the NG SETUP FAILURE message carries the FAILURE Cause value for indicating repetition of the base station identification GNBID.
CN202210179670.9A 2022-02-25 2022-02-25 Method and system for improving reliability of NG link between base station and core network Active CN114501513B (en)

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