CN113853005A - Signaling connection self-establishing method between base stations - Google Patents
Signaling connection self-establishing method between base stations Download PDFInfo
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- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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Abstract
The invention provides a signaling connection self-establishing method between base stations, which comprises the following steps: acquiring cell identification information of a neighboring cell, and analyzing and calculating to obtain a candidate base station identification length candidate list of the neighboring cell according to the cell identification information of the neighboring cell; obtaining a neighbor cell candidate base station identifier candidate list according to the neighbor cell candidate base station identifier length candidate list, and further obtaining a signaling transmission address of a target base station; determining the accessibility of a signaling transmission address of a target base station, determining that the candidate base station of the adjacent cell is the target base station of the adjacent cell when the signaling transmission address of the target base station is determined to have the accessibility, and automatically triggering and establishing signaling connection between a source base station and the target base station; the method can greatly reduce the workload of signaling connection management and maintenance among base stations, improve the number of signaling connections, and then improve the proportion of signaling switching in switching, thereby reducing the overall average switching time delay.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method for self-establishing signaling connection between base stations.
Background
With the coming of the 5G era, as the frequency of 5G base stations (gNB) is high, the coverage area is small, the number of base stations is huge, the signaling connection between the 5G base stations increases exponentially, an operation and maintenance unit (OAM) is responsible for the operation, maintenance and management of a single 5G base station, and an Operation and Maintenance Center (OMC) is responsible for managing the operation and maintenance of a plurality of 5G base stations, if the signaling connection is manually maintained on the OAM/OMC by maintenance personnel, the workload is huge, the maintenance cost is higher, and omission is easy.
Meanwhile, if the base station where the adjacent cell is located is not connected with the Operation and Maintenance Center (OMC), the Operation and Maintenance Center (OMC) cannot acquire the base station identifier length of the base station where the adjacent cell is located, signaling connection cannot be established between the two corresponding base stations, and the number of signaling connection is greatly reduced.
Disclosure of Invention
In order to solve the technical problem, the invention provides a signaling connection self-establishment method between base stations, which can greatly reduce the workload of signaling connection management and maintenance between the base stations, improve the number of signaling connections, and then can improve the proportion of signaling switching in switching, thereby reducing the overall average switching delay.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention provides a signaling connection self-establishing method between base stations, which comprises the following steps:
acquiring cell identification information of a neighboring cell, and analyzing and calculating to obtain a candidate base station identification length candidate list of the neighboring cell according to the cell identification information of the neighboring cell;
obtaining a neighbor cell candidate base station identifier candidate list according to the neighbor cell candidate base station identifier length candidate list, and further obtaining a signaling transmission address of a target base station;
and confirming the accessibility of the signaling transmission address of the target base station, and when the accessibility of the signaling transmission address of the target base station is confirmed, determining the candidate base station of the adjacent cell as the target base station of the adjacent cell, and automatically triggering and establishing the signaling connection between the source base station and the target base station.
The invention provides a signaling connection self-establishment method between base stations, which can greatly reduce the workload of signaling connection management and maintenance between the base stations, improve the number of signaling connections, and then improve the proportion of signaling switching in switching, thereby reducing the overall average switching time delay.
As a preferred technical scheme, after the signaling connection is automatically established between the candidate base station of the neighboring cell and the target base station, the method further comprises the following steps: when the service cell information of the target base station is received, the signaling self-establishment process based on other adjacent cells is optimized, and when the other adjacent cells are also in the service cell list of the target base station, the signaling self-establishment process based on the other adjacent cells is finished, and the established signaling connection is multiplexed.
As a preferred technical solution, the acquiring cell identification information of a neighboring cell includes the following steps: the automatic neighbor cell discovery method comprises the steps that a terminal reads system information broadcasted by a neighbor cell to obtain cell identification information of the neighbor cell, and cell identification information of a cell where UE recently resides is obtained based on UE historical information switched into a local station.
As a preferred technical solution, the analyzing and calculating to obtain the candidate base station identifier length candidate list of the neighboring cell includes the following steps:
when the neighbor cell is added, inquiring a base station network element where the neighbor cell is located according to the cell identifier of the neighbor cell, further inquiring the base station identifier length of a candidate base station where the neighbor cell is located, combining with the cell identifier of the neighbor cell to analyze to obtain the base station identifier of the neighbor cell base station, and sending the base station identifier length of the base station where the neighbor cell is located to the base station, so that the base station can calculate and obtain the base station identifier of the base station according to the determined base station identifier length;
or when the neighbor cell is added, inquiring the candidate base station where the neighbor cell is not located according to the cell identifier of the neighbor cell, and obtaining a first candidate base station identifier length candidate list where the neighbor cell is located according to the statistics of the managed base stations;
and obtaining a first candidate base station identifier candidate list of the adjacent region based on the combination analysis of the first candidate base station identifier length candidate list of the adjacent region and the cell identifier of the adjacent region.
As a preferred technical solution, the analyzing and calculating to obtain the candidate base station identifier length candidate list of the neighboring cell includes the following steps: when the neighbor cell is added, when the base station identification length of the base station where the neighbor cell is located is not fed back, the base station identification of the neighbor cell base station is obtained through combined analysis with the cell identification of the neighbor cell, the base station carries out self-learning according to the base station identification length of the neighbor base station with established signaling connection, the effective base station identification length found in the signaling self-establishment process and the base station identification length of the neighbor base station with established neighbor cell relation, and a second candidate base station identification length candidate list where the neighbor cell is located is obtained;
and obtaining a second candidate base station identifier candidate list of the adjacent cell based on the second candidate base station identifier length candidate list of the adjacent cell and the cell identifier combination analysis of the adjacent cell.
As a preferred technical solution, the analyzing and calculating to obtain the candidate base station identifier length candidate list of the neighboring cell includes the following steps: when the neighbor cell is added, when the base station identifier length of the base station where the neighbor cell is located is not fed back, the base station identifier of the neighbor cell base station is obtained through combination analysis with the cell identifier of the neighbor cell, and the base station can traverse the base station identifier length based on the protocol to form a third candidate base station identifier length candidate list where the neighbor cell is located;
and obtaining a third candidate base station identifier candidate list of the adjacent cell based on the combination analysis of the third candidate base station identifier length candidate list of the adjacent cell and the cell identifier of the adjacent cell.
As a preferred technical solution, the obtaining of the signaling transmission address of the target base station includes the following steps: and according to the base station identification length of the target base station determined by the adjacent cell, combining with the cell identification of the adjacent cell to analyze to obtain the base station identification of the target base station, and sending an uplink base station or a downlink base station configuration transmission signaling, wherein the base station identification of the target base station is selected from a candidate base station identification list to indicate a signaling transmission address of the request target base station.
As a preferred technical solution, the establishing of the signaling connection includes the following steps: after receiving the uplink base station configuration transmission signaling fed back by the target base station, the mobility management unit sends the downlink base station configuration transmission signaling to the source base station and transmits a signaling transmission address of the target base station to the source base station; the source base station receives the signaling transmission address of the target base station and initiates to establish signaling connection to the signaling transmission address of the target base station.
As a preferred technical scheme, when it is determined that the signaling transport address of the target base station does not have reachability, continuing to try to calculate the target base station identifier of the next attempt according to the base station identifier length in the candidate base station identifier length list of the neighboring cell, acquiring the signaling transport address corresponding to the target base station identifier, circulating the above steps until it is determined that the signaling transport address of the target base station has reachability, automatically triggering establishment of signaling connection between the source base station and the candidate base station of the neighboring cell, and then terminating circulation of the above steps.
The present invention provides a storage medium for signaling connection self-establishment between base stations, on which a computer program is stored, the stored computer program causing an electronic device to execute the signaling connection self-establishment method between base stations as described in any one of the above.
Drawings
FIG. 1 is a schematic diagram of a network architecture of a 5G system to which the present invention is applicable;
FIG. 2 is a network diagram of operation and maintenance in a 5G system network according to the present invention;
fig. 3 is a schematic diagram of a discovery process of a 5G base station ID Length (gNB ID Length) of a neighboring cell;
fig. 4 is a schematic flow chart of 5G base station ID Length (gNB ID Length) list formation of neighboring cell candidates;
fig. 5 is a schematic flow chart illustrating signaling self-establishment according to a 5G base station id (gnb id) in the present invention;
fig. 6 is a schematic flow chart illustrating signaling self-establishment according to a base station identifier length candidate list of a neighboring cell in the present invention.
Where the Xn connections in the figure are signalling connections.
Detailed Description
The Operation and Maintenance Center (OMC) is responsible for managing the operation and maintenance of a plurality of 5G base stations, and if the signaling connection is manually maintained on the OAM/OMC by operation and maintenance personnel, the workload is huge, the maintenance cost is high, and omission is easy.
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It is understood that the invention achieves its objects by means of some embodiments,
the invention provides a signaling connection self-establishment method between base stations, which comprises the steps of automatically discovering adjacent cells, calculating and analyzing to obtain possible adjacent base station identifiers according to the determined base station identifier length of the adjacent base station of the adjacent cells, and sending an uplink base station configuration transmission signaling to a mobility management unit (AMF), wherein the base station identifier of a target base station is selected from a candidate base station identifier list to indicate a signaling transmission address of the target base station; the mobile management unit transmits a downlink base station configuration transmission signaling to a target base station to request a signaling transmission address of the target base station; the target base station sends an available signaling transmission address to an uplink base station configuration transmission signaling to indicate the available signaling transmission address of the target base station; after receiving the uplink base station configuration transmission signaling fed back by the target station, the mobility management unit sends the downlink base station configuration transmission signaling to the neighbor candidate base station and informs the signaling transmission address of the target base station to the source base station; the source base station initiates the establishment of signaling connection to the signaling transmission address of the target base station; if the source base station and the candidate target base station of the adjacent region successfully establish the signaling connection, other candidate target base station identification lists determined by the adjacent region are not tried;
if the neighbor candidate base station fails to acquire the signaling address according to the determined base station identifier, and the reason for acquiring the signaling address failure is that the acquired signaling address is overtime or the base station identifier determined by the neighbor is not acquired, continuing to try to calculate the next tried candidate neighbor target base station identifier according to the base station identifier length in each candidate base station identifier length list of the neighbor, trying to acquire the signaling transmission address of the target base station identifier, and establishing signaling connection with the neighbor candidate target base station and the target base station; if the failure still occurs, the above steps are continuously and circularly tried until the signaling transmission address of the target base station is determined to have accessibility, and the steps are automatically triggered to be established and then are stopped to be circulated.
The automatic neighbor cell discovery obtains the cell identification information of the neighbor cell by automatically discovering the neighbor cell, and obtains the cell identification information of the cell where the UE recently resides based on the UE history information switched into the local station.
As shown in fig. 1, a 5G base station (gNB), a handset, and a mobility management unit (AMF), wherein the 5G base station (gNB) includes: the invention provides a signaling connection self-establishing method among base stations, which comprises the steps that a first 5G base station (gNB1), a second 5G base station (gNB2) and a third 5G base station (gNB3) are arranged, wherein no signaling connection exists among the first 5G base station, the second 5G base station and the third 5G base station, and the signaling connection between the first 5G base station and the second 5G base station or between the first 5G base station and the third 5G base station is automatically established.
As shown in fig. 2, each of the first 5G base station (gNB1), the second 5G base station (gNB2) and the third 5G base station (gNB3) includes an operation and maintenance unit (OAM), the first 5G base station (gNB1), the second 5G base station (gNB2) are connected to the first operation and maintenance center unit (OMC1) through the operation and maintenance unit (OAM), and the third 5G base station (gNB3) is connected to the second operation and maintenance center unit (OMC2) through the operation and maintenance unit (OAM).
As shown in fig. 3, the step of finding the ID length of the 5G base station in the neighboring cell includes the following steps:
s301, a first 5G base station (gNB1) finds an adjacent area and reports the adjacent area to an OM (open message center), and the OM reports the adjacent area to an OMC (open message center);
s302 OMC issues and determines to add the adjacent cell, OMC inquires about a second 5G base station (gNB2) of the adjacent cell according to the cell identification information of the adjacent cell, the ID Length (gNB2ID Length) of the second 5G base station of the adjacent cell is issued to OM, and OM informs a first 5G base station (gNB 1).
As shown in fig. 4, forming a 5G base station ID length list of neighboring cell candidates includes the following steps:
in step 404, the first base station 5G (gNB1) finds that the OMC issues the first candidate base station identifier length candidate list, and the base station 5G (gNB) further traverses other possible base station identifier lengths to form a third candidate base station identifier length candidate list of a neighboring cell.
As shown in fig. 5, the signaling self-establishment is performed according to the 5G base station ID, which includes the following steps:
step 501, a first 5G base station (gNB1) initiates an uplink base station configuration transmission signaling request to a mobility management unit (AMF) to request a signaling transmission address of a second 5G base station (gNB 2);
step 502, after finding the second 5G base station (gNB2), the AMF (mobility management unit) sends a downlink base station configuration transmission signaling request to the second 5G base station (gNB2) to request a signaling transmission address of the second 5G base station (gNB 2);
step 503, the second 5G base station (gNB2) sends uplink base station configuration transmission signaling to the mobility management unit (AMF) to provide a signaling transmission address of the second 5G base station (gNB 2);
step 504, the mobility management unit (AMF) sends downlink base station configuration transmission signaling to the first 5G base station (gNB1) to provide a signaling transmission address of the second 5G base station (gNB 2);
step 505 the first 5G base station (gNB1) checks the reachability of the second 5G base station (gNB2) signalling address, the second 5G base station (gNB2) signalling address having reachability;
step 506, the first 5G base station (gNB1) initiates a signaling connection establishment request to the signaling transport address of the second 5G base station (gNB2), and then automatically establishes a signaling connection between the first 5G base station (gNB1) and the second 5G base station (gNB 2);
in step 507, after receiving the signaling connection establishment request response, the first 5G base station (gNB1) optimizes the signaling connection establishment of the first 5G base station (gNB1) based on other neighboring cells according to the serving cell information of the second 5G base station (gNB 2).
As shown in fig. 6, the signaling self-establishment according to the candidate list of the base station identifier length of the neighboring cell includes the following steps:
601, the first 5G base station (gNB1) initiates an uplink base station configuration transmission signaling request to a mobility management unit (AMF) to request a signaling transmission address of a third 5G base station (gNB3), uses a base station identifier length candidate list of a neighboring cell, and sequentially tries the first candidate base station identifier length candidate list obtained by statistics in step 402, the second candidate base station identifier length candidate list obtained by statistics in step 403, and the third candidate base station identifier length candidate list obtained in step 404 according to priority;
step 604 the mobility management unit (AMF) sends downlink base station configuration transport signaling to the first 5G base station (gNB1) providing the signaling transport address of the third 5G base station (gNB 3).
Step 605 the first 5G base station (gNB1) checks the reachability of the third 5G base station (gNB3), the third 5G base station (gNB3) having reachability;
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all modifications and equivalents falling within the scope of the appended claims. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A method for self-establishing signaling connection between base stations, comprising the steps of:
acquiring cell identification information of a neighboring cell, and analyzing and calculating to obtain a candidate base station identification length candidate list of the neighboring cell according to the cell identification information of the neighboring cell;
obtaining a neighbor cell candidate base station identifier candidate list according to the neighbor cell candidate base station identifier length candidate list, and further obtaining a signaling transmission address of a target base station;
and confirming the accessibility of the signaling transmission address of the target base station, and when the accessibility of the signaling transmission address of the target base station is confirmed, determining the candidate base station of the adjacent cell as the target base station of the adjacent cell, and automatically triggering and establishing the signaling connection between the source base station and the target base station.
2. The method of claim 1, wherein after the signaling connection is automatically established between the candidate base station in the neighboring cell and the target base station, the method further comprises the following steps: when the service cell information of the target base station is received, the signaling self-establishment process based on other adjacent cells is optimized, and when the other adjacent cells are also in the service cell list of the target base station, the signaling self-establishment process based on the other adjacent cells is finished, and the established signaling connection is multiplexed.
3. The method of claim 1, wherein the obtaining the cell identification information of the neighboring cell comprises: the automatic neighbor cell discovery method comprises the steps that a terminal reads system information broadcasted by a neighbor cell to obtain cell identification information of the neighbor cell, and cell identification information of a cell where UE recently resides is obtained based on UE historical information switched into a local station.
4. The method of claim 1, wherein the analyzing and calculating to obtain the candidate base station identifier length candidate list of the neighboring cell comprises:
when the neighbor cell is added, inquiring a base station network element where the neighbor cell is located according to the cell identifier of the neighbor cell, further inquiring the base station identifier length of a candidate base station where the neighbor cell is located, combining with the cell identifier of the neighbor cell to analyze to obtain the base station identifier of the neighbor cell base station, and sending the base station identifier length of the base station where the neighbor cell is located to the base station, so that the base station can calculate and obtain the base station identifier of the base station according to the determined base station identifier length;
or when the neighbor cell is added, inquiring the candidate base station where the neighbor cell is not located according to the cell identifier of the neighbor cell, and obtaining a first candidate base station identifier length candidate list where the neighbor cell is located according to the statistics of the managed base stations;
and obtaining a first candidate base station identifier candidate list of the adjacent region based on the combination analysis of the first candidate base station identifier length candidate list of the adjacent region and the cell identifier of the adjacent region.
5. The method of claim 1, wherein the analyzing and calculating to obtain the candidate base station identifier length candidate list of the neighboring cell comprises the following steps: when the neighbor cell is added, when the base station identification length of the base station where the neighbor cell is located is not fed back, the base station identification of the neighbor cell base station is obtained through combined analysis with the cell identification of the neighbor cell, the base station carries out self-learning according to the base station identification length of the neighbor base station with established signaling connection, the effective base station identification length found in the signaling self-establishment process and the base station identification length of the neighbor base station with established neighbor cell relation, and a second candidate base station identification length candidate list where the neighbor cell is located is obtained;
and obtaining a second candidate base station identifier candidate list of the adjacent cell based on the second candidate base station identifier length candidate list of the adjacent cell and the cell identifier combination analysis of the adjacent cell.
6. The method of claim 1, wherein the analyzing and calculating to obtain the candidate base station identifier length candidate list of the neighboring cell comprises: when the neighbor cell is added, when the base station identifier length of the base station where the neighbor cell is located is not fed back, the base station identifier of the neighbor cell base station is obtained through combination analysis with the cell identifier of the neighbor cell, and the base station can traverse the base station identifier length based on the protocol to form a third candidate base station identifier length candidate list where the neighbor cell is located;
and obtaining a third candidate base station identifier candidate list of the adjacent cell based on the combination analysis of the third candidate base station identifier length candidate list of the adjacent cell and the cell identifier of the adjacent cell.
7. The method of claim 1, wherein the step of obtaining the signaling transmission address of the target base station comprises the steps of: and according to the base station identification length of the target base station determined by the adjacent cell, combining with the cell identification of the adjacent cell to analyze to obtain the base station identification of the target base station, and sending an uplink base station or a downlink base station configuration transmission signaling, wherein the base station identification of the target base station is selected from a candidate base station identification list to indicate a signaling transmission address of the request target base station.
8. The method of claim 7, wherein establishing the signaling connection comprises: after receiving the uplink base station configuration transmission signaling fed back by the target base station, the mobility management unit sends the downlink base station configuration transmission signaling to the source base station and transmits a signaling transmission address of the target base station to the source base station; the source base station receives the signaling transmission address of the target base station and initiates to establish signaling connection to the signaling transmission address of the target base station.
9. The method as claimed in claim 8, wherein when it is determined that the signaling transport address of the target base station does not have reachability, the method continues to try to calculate the target base station identifier of the next try according to the base station identifier length in the candidate base station identifier length list of the neighboring cell, obtains the signaling transport address corresponding to the target base station identifier, and repeats the above steps until it is determined that the signaling transport address of the target base station has reachability, and automatically triggers establishment of the signaling connection between the source base station and the candidate base station of the neighboring cell, and then terminates the above steps.
10. A storage medium on which a signaling connection between base stations is self-established, characterized in that a computer program is stored, the stored computer program causing an electronic device to execute the signaling connection self-establishment method between base stations according to any one of claims 1 to 9。
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