CN114363928A - XN interface interaction method and system - Google Patents
XN interface interaction method and system Download PDFInfo
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- CN114363928A CN114363928A CN202111615010.2A CN202111615010A CN114363928A CN 114363928 A CN114363928 A CN 114363928A CN 202111615010 A CN202111615010 A CN 202111615010A CN 114363928 A CN114363928 A CN 114363928A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides an XN interface interaction method and a system, comprising the following steps: acquiring service cell state information of a current service cell, and determining a service cell list carrying the service cell state information when establishing an XN link with an adjacent base station; when the state of the serving cell changes, performing configuration updating process interaction with the adjacent base station; and performing resource allocation between the current serving cell and the serving cell to which the adjacent base station belongs based on the serving cell list and the adjacent base station. The service cell states are divided into various types and the service cell states are interacted at the XN establishing stage, so that the gNB base station can acquire the cell states of the adjacent gNB at the XN establishing stage and can be used as a basis for terminal mobility management triggered in subsequent various processes, unnecessary XN updating processes are reduced, transmission network load is reduced, and system operation efficiency and mobility management efficiency are improved.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to an XN interface interaction method and system.
Background
A Network interface between NG-RAN (NG Radio Access Network) nodes (gnbs or NG-enbs) of a 5G (5th Generation Mobile Communication Technology) base station is called an XN interface, the XN interface supports signaling information exchange between two gnbs and forwarding of PDUs (Protocol Data units) to each tunnel endpoint, and the gnbs interact respective base station global information, serving Cell information and neighbor Cell information through XN interface signaling, so as to implement load balancing, Cell energy saving, energy saving Cell activation, neighbor Cell PCI (Physical Cell Identifier) collision detection, and the like.
After an XN interface is established between two base station nodes, wherein after one service cell of a current base station is blocked due to energy conservation and the like, the base station informs an adjacent base station at the opposite end of an XN link by triggering an NG-RAN node Configuration Update flow so that the adjacent base station can carry out operations such as mobility management, load balancing, energy-saving cell activation and the like according to the service cell state of the current base station, and when the service cell load of the adjacent base station is overhigh, the adjacent base station sends a cell activation request to a service cell which belongs to the same coverage or part of the same coverage with the service cell of the adjacent base station and is blocked due to energy conservation through an XN link according to the existing protocol so as to share part of load.
In the above protocol, both the xntup Request message and the XN Setup Response message in the XN link establishment procedure between the base stations lack cell state information, so that the cell that is already blocked by the current base station is not known by the neighboring base station before the XN link is established between the base stations, and the neighboring base station cannot activate the corresponding serving cell and cannot be used for functions such as load balancing; meanwhile, according to the existing protocol framework, the current base station can only notify the adjacent base station at the opposite end of the XN link by triggering an NG-RAN node Configuration Update flow once after the XN link is established, and a service cell in a blocking state exists under the current base station, so that the network overhead is increased, and the network operation efficiency is also reduced.
Disclosure of Invention
The invention provides an XN interface interaction method and system, which are used for solving the defect that in the prior art, when XN interface information interaction is carried out between base stations, the state information of an opposite terminal service cell cannot be obtained in advance, so that an additional network interaction flow is consumed to carry out resource allocation, and the network overhead is overlarge.
In a first aspect, the present invention provides an XN interface interaction method, including:
acquiring service cell state information of a current service cell, and determining a service cell list carrying the service cell state information when establishing an XN link with an adjacent base station;
when the state of the serving cell changes, performing configuration updating process interaction with the adjacent base station;
and performing resource allocation between the current serving cell and the serving cell to which the adjacent base station belongs based on the serving cell list and the adjacent base station.
According to an XN interface interaction method provided by the present invention, the determining a serving cell list carrying the serving cell state information when acquiring the serving cell state information of a current serving cell and establishing an XN link with an adjacent base station includes:
determining a normal state, an energy-saving blocking state and other blocking states of the current serving cell;
and saving the normal state and the energy-saving blocking state to the serving cell list.
According to the XN interface interaction method provided by the present invention, when the state of the cell to be served changes, the cell to be served performs configuration update procedure interaction with the neighboring base station, including:
after being electrified, the current service cell is established, any service cell in the current service cell is determined to be in the energy-saving blocking state, and an XN establishment flow initiated by the adjacent base station is received after the adjacent base station is electrified;
and sending a response flow carrying the state information of any service cell and the rest cells to the adjacent base station, so that the adjacent base station can store the energy-saving blocking state of any service cell and the normal states of the rest cells.
According to the XN interface interaction method provided by the present invention, when the state of the cell to be served changes, the cell to be served performs configuration update procedure interaction with the neighboring base station, further comprising:
after being powered on, the current service cell is established, and an XN establishment flow initiated by the adjacent base station is received after the adjacent base station is powered on, wherein the XN establishment flow carries the service cell of the adjacent base station, and any service cell in the service cell is in the energy-saving block state;
and saving the energy-saving blocking state of any service cell and the normal states of other cells, and sending a response flow to the adjacent base station.
According to the XN interface interaction method provided by the present invention, when the state of the cell to be served changes, the cell to be served performs configuration update procedure interaction with the neighboring base station, further comprising:
after being electrified, the current service cell is established, any service cell in the current service cell is determined to be in the other blocking state, and an XN establishment flow initiated by the adjacent base station is received after the adjacent base station is electrified;
and sending a response flow carrying the state information of the rest cells to the adjacent base station so that the adjacent base station can store the normal states of the rest cells.
According to an XN interface interaction method provided by the present invention, the resource allocation between the current serving cell and the serving cell to which the neighboring base station belongs based on the serving cell list and the neighboring base station includes:
if any service cell in the service cells of the adjacent base station needs to carry out intra-cell terminal load distribution, receiving a cell activation request sent by the adjacent base station;
and activating any service cell in the current service cell, sending a cell activation success correspondence to the adjacent base station, and switching the shunting terminal of any service cell in the service cells to which the adjacent base station belongs to any service cell in the current service cell.
According to an XN interface interaction method provided by the present invention, the resource allocation between the current serving cell and the serving cell to which the neighboring base station belongs is performed based on the serving cell list and the neighboring base station, further comprising:
if judging that any one service cell in the current service cell needs to carry out intra-cell terminal load distribution, sending a cell activation request to the adjacent base station;
and when the adjacent cell activates any one of the service cells, receiving an activation success response sent by the adjacent cell, and switching the shunting terminal in any one of the current service cells to any one of the service cells.
According to an XN interface interaction method provided by the present invention, the resource allocation between the current serving cell and the serving cell to which the neighboring base station belongs is performed based on the serving cell list and the neighboring base station, further comprising:
if any service cell in the current service cell enters a normal state, sending a configuration updating flow to the adjacent base station, wherein the configuration updating flow carries the state information of any service cell in the current service cell;
and the adjacent cell stores the state information of any service cell in the current service cell, and if any service cell in the service cell to which the adjacent cell belongs needs to carry out intra-cell terminal load distribution, the distribution terminal in any service cell in the service cell to which the adjacent cell belongs is switched to any service cell in the current service cell.
According to the XN interface interaction method provided by the present invention, any serving cell in the serving cell and any serving cell in the current serving cell belong to the same coverage neighboring cell.
In a second aspect, the present invention further provides an XN interface interactive system, including:
an obtaining module, configured to obtain serving cell state information of a current serving cell, and determine a serving cell list carrying the serving cell state information when establishing an XN link with an adjacent base station;
the interaction module is used for carrying out configuration updating process interaction with the adjacent base station when the state of the cell to be served changes;
a configuration module, configured to perform resource configuration between the current serving cell and a serving cell to which the neighboring base station belongs, based on the serving cell list and the neighboring base station.
In a third aspect, the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the steps of the XN interface interaction method according to any one of the above descriptions.
In a fourth aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the XN interface interaction method as described in any one of the above.
In a fifth aspect, the present invention also provides a computer program product comprising a computer program, which when executed by a processor, implements the steps of the XN interface interaction method as described in any of the above.
According to the XN interface interaction method and system provided by the invention, the service cell states are divided into multiple types and the service cell states are interacted at the XN establishment stage, so that the gNB base station can acquire the cell states of the adjacent gNB at the XN establishment stage and can be used as a basis for terminal mobility management triggered in subsequent various processes, unnecessary XN updating processes are reduced, the load of a transmission network is reduced, and the system operation efficiency and the mobility management efficiency are improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of an XN interface interaction method provided by the present invention;
FIG. 2 is a flowchart illustrating an embodiment of an XN interface interaction method provided by the present invention;
FIG. 3 is a second schematic flowchart of an XN interface interaction method according to an embodiment of the present invention;
FIG. 4 is a third schematic flowchart of an XN interface interaction method according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an XN interface interaction system provided by the present invention;
fig. 6 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Aiming at the limitation of the prior art, the invention provides an XN interface interaction method, fig. 1 is a schematic flow chart of the XN interface interaction method provided by the invention, as shown in fig. 1, including:
step S1, obtaining service cell state information of the current service cell, and determining a service cell list carrying the service cell state information when establishing an XN link with an adjacent base station;
step S2, when the state of the serving cell changes, the serving cell interacts with the adjacent base station through a configuration updating process;
step S3, based on the serving cell list and the neighboring base station, perform resource allocation between the current serving cell and the serving cell to which the neighboring base station belongs.
It should be noted that, the present invention mainly aims at the method for performing XN link interaction between 5G base station systems in a 5G communication network, optimizes the flow of XN link interaction, provides convenience for the energy saving function and the handover function depending on the XN link, and improves the efficiency and the success rate of energy saving and handover.
Firstly, a gNB base station distinguishes and stores service cell states, which are generally divided into normal available states, blocked states due to energy conservation and blocked states due to other reasons, when the gNB base station establishes an XN link with an adjacent gNB base station, the service cell states (including a 'normal available' state and a 'blocked states due to energy conservation') are carried in a service cell list in an XN link establishment request and an XN link establishment response;
when the gNB receives the XN link establishment request or the XN link establishment response, the service cell state in the message is saved, and the cell state is referred to in the functions of subsequent cell energy saving, load balancing and the like;
when the serving cell state in the gNB base station changes, the gNB base station initiates an NG-RAN node Configuration Update procedure to notify the neighboring gNB base station, where the state change includes, but is not limited to, a transition between a normal available state and an energy saving blocking state, a transition between a normal available state and a blocking state for other reasons, and a transition between an energy saving blocking state and a blocking state for other reasons, for the cell whose state changes.
The invention optimizes the XN establishing process and the interactive process by adding the cell in the XN link, solves the problem that the cell state information before the XN is established can not be obtained through the XN Setup process, reduces the unnecessary NG-RAN node Configuration Update process, optimizes the energy-saving function processing process, improves the efficiency of network triggering load balancing and improves the user experience.
Based on the above embodiment, step S1 includes:
determining a normal state, an energy-saving blocking state and other blocking states of the current serving cell;
and saving the normal state and the energy-saving blocking state to the serving cell list.
Optionally, the gNB base station for which the present invention is directed distinguishes states of serving cells subordinate to the gNB base station, and the entire state is divided into a normal state and a block state, that is, in the normal state, the terminal can normally access, and in the block state, the serving cell is unavailable, and the terminal cannot normally access.
Further, the blocking state is divided into an energy-saving blocking state and other blocking states, and generally, when the number of terminals accessed to a serving cell subordinate to the base station is small, in order to save energy consumption of the base station, part of the serving cells are dynamically closed, so that energy saving and emission reduction are realized, that is, the energy-saving blocking state; or, due to the human factor of network setting or the hardware of the base station, the service cell under the base station cannot be used normally, and the invention belongs to other blocking states.
Meanwhile, the normal state and the energy-saving blocking state are stored in a service cell list so as to be used for referring to the state of the corresponding cell when the cell energy saving and load balancing are realized subsequently.
According to the invention, the states of the serving cells of the gNB base station are divided in detail, so that dynamic resource allocation is conveniently carried out on the serving cells according to different states of the serving cells, and the efficiency of network trigger load balancing is improved.
Based on any of the above embodiments, step S2 includes:
after being electrified, the current service cell is established, any service cell in the current service cell is determined to be in the energy-saving blocking state, and an XN establishment flow initiated by the adjacent base station is received after the adjacent base station is electrified;
and sending a response flow carrying the state information of any service cell and the rest cells to the adjacent base station, so that the adjacent base station can store the energy-saving blocking state of any service cell and the normal states of the rest cells.
Optionally, for an energy-saving block state, the present invention provides one of the embodiments, assuming that after the current base station is powered on, a current serving cell is established, including a plurality of serving cells, where any one serving cell enters the energy-saving block state due to energy-saving reasons, and the rest cells are in a normal state;
after the adjacent base station of the current base station is electrified, the service cell which the adjacent base station belongs to is also established, the service cell also comprises a plurality of service cells, and the adjacent base station initiates an XN Setup process with the current base station; and after receiving the XN Setup flow, the current base station returns an XN Setup Response to the adjacent base station, wherein the XN Setup Response carries the energy-saving blocking state of any service cell and the normal states of other cells.
The invention sends the states of all the cells to the adjacent base station at the initial stage of establishing the service cell at the current base station, and does not need to adopt an additional process to carry out the interaction of the states of the service cells, thereby saving the resources of the message interaction process.
Based on any of the above embodiments, step S2 further includes:
after being powered on, the current service cell is established, and an XN establishment flow initiated by the adjacent base station is received after the adjacent base station is powered on, wherein the XN establishment flow carries the service cell of the adjacent base station, and any service cell in the service cell is in the energy-saving block state;
and saving the energy-saving blocking state of any service cell and the normal states of other cells, and sending a response flow to the adjacent base station.
Optionally, similar to the foregoing embodiment, also for the energy-saving blocking state, the present invention provides another embodiment, where after the current base station is powered on, a current serving cell is established, where the current serving cell includes a plurality of serving cells, and all the serving cells are in a normal state;
after the adjacent base station of the current base station is electrified, the affiliated service cell is established and also comprises a plurality of service cells, wherein one service cell is manually set to be in an energy-saving blocking state, and the rest cells are in normal states; the adjacent base station initiates an XN Setup process between the adjacent base station and the current base station, wherein the XN Setup process carries the energy-saving blocking state of any service cell and the normal states of other cells, and after the current base station receives the XN Setup process, the current base station saves the energy-saving blocking state of any service cell and the normal states of other cells of the adjacent base station and replies an XN Setup Response to the adjacent base station.
The invention sends the states of all the cells to the current base station at the initial stage of establishing the service cell by the adjacent base station without adopting an additional process to carry out the interaction of the states of the service cells, thereby saving the resource of the message interaction process.
Based on any of the above embodiments, step S2 further includes:
after being electrified, the current service cell is established, any service cell in the current service cell is determined to be in the other blocking state, and an XN establishment flow initiated by the adjacent base station is received after the adjacent base station is electrified;
and sending a response flow carrying the state information of the rest cells to the adjacent base station so that the adjacent base station can store the normal states of the rest cells.
Optionally, the present invention further provides an embodiment for other block states, assuming that after the current base station is powered on, a current serving cell is established, including a plurality of serving cells, where any one serving cell enters into other block states due to a hardware device failure, and the other cells are normal states;
after the adjacent base station of the current base station is electrified, establishing a service cell which the adjacent base station belongs to, wherein the service cell also comprises a plurality of service cells, and the adjacent base station initiates an XN Setup process with the current base station; and after receiving the XN Setup flow, the current base station returns an XN Setup Response to the adjacent base station, wherein the XN Setup Response only carries the normal state of the rest cells, and the adjacent base station stores the state information of the rest cells in the current base station.
The invention sends the state of the normal cell to the adjacent base station at the initial stage of establishing the service cell by the current base station, and does not need to adopt an additional flow to carry out the interaction of the state of the service cell, thereby saving the resource of the message interaction flow.
Based on any of the above embodiments, step S3 includes:
if any service cell in the service cells of the adjacent base station needs to carry out intra-cell terminal load distribution, receiving a cell activation request sent by the adjacent base station;
and activating any service cell in the current service cell, sending a cell activation success correspondence to the adjacent base station, and switching the shunting terminal of any service cell in the service cells to which the adjacent base station belongs to any service cell in the current service cell.
And any one of the serving cells in the current serving cell belong to the same-coverage neighboring cell.
Optionally, when any serving Cell under the neighboring base station is under a high load, a terminal in a Cell that belongs to a serving Cell under the same-coverage neighboring Cell needs to be searched for load balancing and offloading, and it is determined that any serving Cell under the current base station is in an energy-saving blocking state, a Cell activation request is sent to the current base station and carries a CGI (Cell Global Identifier) of the requesting Cell.
The current base station receives the activation request of the adjacent base station, activates any service cell in the energy-saving blocking state under the current base station, replies a cell activation success response to the adjacent base station, and the adjacent base station switches part of terminals under any service cell needing load balancing in the service cell to any activated service cell under the current base station, so that the wireless load capacity of the service cell is reduced.
The invention carries out high-efficiency load balancing through the state of the service cell between the current base station and the adjacent base station, and can acquire the state of the service cell in advance through the XN link interaction flow without additional configuration updating flow, thereby optimizing the energy-saving processing flow.
Based on any of the above embodiments, step S3 further includes:
if judging that any one service cell in the current service cell needs to carry out intra-cell terminal load distribution, sending a cell activation request to the adjacent base station;
and when the adjacent cell activates any one of the service cells, receiving an activation success response sent by the adjacent cell, and switching the shunting terminal in any one of the current service cells to any one of the service cells.
And any one of the serving cells in the current serving cell belong to the same-coverage neighboring cell.
Optionally, when any serving cell under the current base station needs to search for serving cells under the same-coverage neighboring cells for load balancing and offloading due to an excessive load, and it is determined that any serving cell under the neighboring base station is in an energy-saving blocking state, a cell activation request is sent to the neighboring base station, and the CGI of the requesting cell is carried.
The adjacent base station receives the activation request of the current base station, activates any service cell in the energy-saving blocking state under the adjacent base station, replies a cell activation success response to the current base station, and switches part of terminals under any service cell needing load balancing to any activated service cell under the adjacent base station, so that the wireless load capacity of the service cell is reduced.
The invention carries out high-efficiency load balancing through the state of the service cell between the current base station and the adjacent base station, and can acquire the state of the service cell in advance through the XN link interaction flow without additional configuration updating flow, thereby optimizing the energy-saving processing flow.
Based on any of the above embodiments, step S3 further includes:
if any service cell in the current service cell enters a normal state, sending a configuration updating flow to the adjacent base station, wherein the configuration updating flow carries the state information of any service cell in the current service cell;
and the adjacent cell stores the state information of any service cell in the current service cell, and if any service cell in the service cell to which the adjacent cell belongs needs to carry out intra-cell terminal load distribution, the distribution terminal in any service cell in the service cell to which the adjacent cell belongs is switched to any service cell in the current service cell.
And any one of the serving cells in the current serving cell belong to the same-coverage neighboring cell.
Optionally, after the fault of any service cell in other blocking states under the current base station is repaired, entering a normal available state, and initiating an NG-RAN node Configuration Update flow by the current base station, wherein the flow carries state information of a new available cell;
and the adjacent base station stores the state information of the new available cell of the current base station according to the NG-RAN node Configuration Update flow, takes the available cell as a switching target alternative adjacent cell in the subsequent terminal management flow, and switches part of terminals under any service cell to the new available cell in the current base station when the load of any service cell under the adjacent base station is overhigh, so that the wireless load capacity of the service cell is reduced.
The invention carries out high-efficiency load balancing through the state of the service cell between the current base station and the adjacent base station, and can acquire the state of the service cell in advance through the XN link interaction flow without additional configuration updating flow, thereby optimizing the energy-saving processing flow.
Fig. 2 is a schematic flow chart of an embodiment of the XN interface interaction method provided in the present invention, and as shown in fig. 2, the XN link establishment response includes a cell in a normal available state and a cell in a state of being blocked due to energy saving.
There are districts 11, 12 under base station 1, there are districts 21 and districts 22 under base station 2, two base stations have established NG interface with the same 5G core network A, district 12 and district 22 belong to and cover the neighbouring cell together, the implement step includes:
the method comprises the following steps: the base station 1 is firstly powered on, a cell 11 and a cell 12 are established, and the cell 12 enters a blocking state due to energy conservation after a period of time;
step two: powering up the base station 2, establishing a cell 21 and a cell 22, and initiating an XN Setup process with the base station 1;
step three: the base station 1 carries the cells 11 and 12 in the XN Setup Response, and indicates that the cell 11 is in a normal usable state, and the cell 12 is in a blocked state due to energy saving. The base station 2 saves the state information of the cells 11 and 12;
step four: the cell 22 under the base station 2 needs to search a co-coverage neighboring cell for load balancing and shunting of the intra-cell terminal due to excessive load, and sends a cell activation request to the base station 1 when judging that the cell 12 under the base station 1 is in an energy-saving blocking state, wherein the cell activation request carries the CGI of the cell 12;
step five: the base station 1 receives the activation request of the cell 12, activates the cell 12, and replies a cell activation success response to the base station 2, the base station 2 switches part of the terminals under the cell 22 to the cell 12, and the wireless load of the cell 22 is reduced.
Fig. 3 is a second schematic flowchart of an XN interface interaction method according to an embodiment of the present invention, and as shown in fig. 3, the XN link establishment request includes a cell in a normal available state and a cell in a state of being blocked due to energy saving.
There are districts 11, 12 under the base station 1, there are district 21 and spare cell 22 under the base station 2, two base stations have established NG interface with the same 5G core network A between, district 12 and district 22 belong to and cover the neighbouring cell together, realize the step includes:
the method comprises the following steps: the base station 1 is powered on first, and a cell 11 and a cell 12 are established; the base station 2 is powered on, a cell 21 is established, and the initial state of the cell 22 is manually set to be an energy-saving blocking state;
step two: the base station 2 initiates an XN Setup process with the base station 1, carries the cells 21 and 22 in an XN Setup Request, and indicates that the state of the cell 21 is normal and usable, and the state of the cell 22 is energy-saving blocking;
step three: the base station 1 saves the state information of the cells 21 and 22 and replies an XN Setup Response;
step four: the cell 12 under the base station 1 needs to search a co-coverage neighboring cell for load balancing and shunting of an intra-cell terminal due to excessive load, and sends a cell activation request to the base station 2 when judging that the cell 22 under the base station 2 is in an energy-saving blocking state, wherein the cell activation request carries a CGI (common gateway interface) of the cell 22;
step five: the base station 2 receives the activation request of the cell 22, activates the cell 22, and replies a cell activation success response to the base station 1, the base station 1 switches part of the terminals under the cell 12 to the cell 22, and the wireless load of the cell 12 is reduced.
Fig. 4 is a third schematic flowchart of an XN interface interaction method according to the third embodiment of the present invention, and as shown in fig. 4, after the cell is recovered to be used in the block state due to other reasons, the base station initiates an XN Update procedure.
There are districts 11, 12 under the base station 1, there are districts 21 and districts 22 under the base station 2, have set up NG interface between two base stations and the same 5G core network A, district 12 and district 22 belong to the part and cover the neighbouring cell together, the implementation step includes:
the method comprises the following steps: the base station 1 is powered on first, a cell 11 is established, and a cell 12 is not established due to the failure of hardware equipment;
step two: powering up the base station 2, establishing a cell 21 and a cell 22, and initiating an XN Setup process with the base station 1;
step three: the base station 1 carries the cell 11 in the XN Setup Response and indicates that the state of the cell 11 is normally available, and the base station 2 stores the state information of the cell 11;
step four: completing fault repair of the cell 12 under the base station 1, entering a normal available state, and initiating an NG-RAN node Configuration Update flow by the base station 1 to carry a new available cell 12;
step five: the base station 2 stores the state information of the cell 12, the cell 12 is used as a handover target candidate neighbor cell of the cell 22 in the subsequent terminal management process, when the load of the cell 22 is too high, the base station 2 switches part of the terminals under the cell 22 to the cell 12, and the wireless load of the cell 22 is reduced.
The service cell states are divided into 3 types and the service cell states are interacted at the XN establishing stage, so that the gNB base station can acquire the cell states of adjacent gNB at the XN establishing stage and can be used as the basis of terminal mobility management triggered in subsequent various processes, unnecessary XN updating processes are reduced, the load of a transmission network is reduced, and the system operation efficiency and the mobility management efficiency are improved.
The following describes the XN interface interaction system provided by the present invention, and the XN interface interaction system described below and the XN interface interaction method described above can be referred to correspondingly.
Fig. 5 is a schematic structural diagram of an XN interface interaction system provided in the present invention, as shown in fig. 5, including: an acquisition module 51, an interaction module 52 and a configuration module 53, wherein:
the obtaining module 51 is configured to obtain serving cell state information of a current serving cell, and determine a serving cell list carrying the serving cell state information when establishing an XN link with an adjacent base station; the interaction module 52 is configured to perform configuration update procedure interaction with the neighboring base station when the state of the serving cell changes; the configuring module 53 is configured to perform resource configuration between the current serving cell and a serving cell to which the neighboring base station belongs, based on the serving cell list and the neighboring base station.
The invention optimizes the XN establishing process and the interactive process by adding the cell in the XN link, solves the problem that the cell state information before the XN is established can not be obtained through the XN Setup process, reduces the unnecessary NG-RAN node Configuration Update process, optimizes the energy-saving function processing process, improves the efficiency of network triggering load balancing and improves the user experience.
Fig. 6 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 6: a processor (processor)610, a communication Interface (Communications Interface)620, a memory (memory)630 and a communication bus 640, wherein the processor 610, the communication Interface 620 and the memory 630 communicate with each other via the communication bus 640. The processor 610 may call logic instructions in the memory 630 to perform an XN interface interaction method, which includes: acquiring service cell state information of a current service cell, and determining a service cell list carrying the service cell state information when establishing an XN link with an adjacent base station; when the state of the serving cell changes, performing configuration updating process interaction with the adjacent base station; and performing resource allocation between the current serving cell and the serving cell to which the adjacent base station belongs based on the serving cell list and the adjacent base station.
In addition, the logic instructions in the memory 630 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product including a computer program, the computer program being stored on a non-transitory computer-readable storage medium, wherein when the computer program is executed by a processor, the computer is capable of executing the XN interface interaction method provided by the above methods, the method includes: acquiring service cell state information of a current service cell, and determining a service cell list carrying the service cell state information when establishing an XN link with an adjacent base station; when the state of the serving cell changes, performing configuration updating process interaction with the adjacent base station; and performing resource allocation between the current serving cell and the serving cell to which the adjacent base station belongs based on the serving cell list and the adjacent base station.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to perform the XN interface interaction method provided by the above methods, the method including: acquiring service cell state information of a current service cell, and determining a service cell list carrying the service cell state information when establishing an XN link with an adjacent base station; when the state of the serving cell changes, performing configuration updating process interaction with the adjacent base station; and performing resource allocation between the current serving cell and the serving cell to which the adjacent base station belongs based on the serving cell list and the adjacent base station.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An XN interface interaction method is characterized by comprising the following steps:
acquiring service cell state information of a current service cell, and determining a service cell list carrying the service cell state information when establishing an XN link with an adjacent base station;
when the state of the serving cell changes, performing configuration updating process interaction with the adjacent base station;
and performing resource allocation between the current serving cell and the serving cell to which the adjacent base station belongs based on the serving cell list and the adjacent base station.
2. The XN interface interaction method of claim 1, wherein said obtaining the serving cell status information of the current serving cell, and determining the serving cell list carrying the serving cell status information when establishing the XN link with the neighboring base station, comprises:
determining a normal state, an energy-saving blocking state and other blocking states of the current serving cell;
and saving the normal state and the energy-saving blocking state to the serving cell list.
3. The XN interface interaction method of claim 2, wherein when the state of the serving cell changes, the method performs configuration update procedure interaction with the neighboring base station, and comprises:
after being electrified, the current service cell is established, any service cell in the current service cell is determined to be in the energy-saving blocking state, and an XN establishment flow initiated by the adjacent base station is received after the adjacent base station is electrified;
and sending a response flow carrying the state information of any service cell and the rest cells to the adjacent base station, so that the adjacent base station can store the energy-saving blocking state of any service cell and the normal states of the rest cells.
4. The XN interface interaction method of claim 2, wherein when the state of the cell to be served changes, the neighboring base station performs configuration update procedure interaction, further comprising:
after being powered on, the current service cell is established, and an XN establishment flow initiated by the adjacent base station is received after the adjacent base station is powered on, wherein the XN establishment flow carries the service cell of the adjacent base station, and any service cell in the service cell is in the energy-saving block state;
and saving the energy-saving blocking state of any service cell and the normal states of other cells, and sending a response flow to the adjacent base station.
5. The XN interface interaction method of claim 2, wherein when the state of the cell to be served changes, the neighboring base station performs configuration update procedure interaction, further comprising:
after being electrified, the current service cell is established, any service cell in the current service cell is determined to be in the other blocking state, and an XN establishment flow initiated by the adjacent base station is received after the adjacent base station is electrified;
and sending a response flow carrying the state information of the rest cells to the adjacent base station so that the adjacent base station can store the normal states of the rest cells.
6. The XN interface interaction method according to claim 3, wherein the performing resource configuration between the current serving cell and the serving cell to which the neighboring base station belongs based on the serving cell list and the neighboring base station comprises:
if any service cell in the service cells of the adjacent base station needs to carry out intra-cell terminal load distribution, receiving a cell activation request sent by the adjacent base station;
and activating any service cell in the current service cell, sending a cell activation success correspondence to the adjacent base station, and switching the shunting terminal of any service cell in the service cells to which the adjacent base station belongs to any service cell in the current service cell.
7. The XN interface interaction method according to claim 4, wherein the performing resource allocation between the current serving cell and the serving cell to which the neighboring base station belongs based on the serving cell list and the neighboring base station further comprises:
if judging that any one service cell in the current service cell needs to carry out intra-cell terminal load distribution, sending a cell activation request to the adjacent base station;
and when the adjacent cell activates any one of the service cells, receiving an activation success response sent by the adjacent cell, and switching the shunting terminal in any one of the current service cells to any one of the service cells.
8. The XN interface interaction method of claim 5, wherein said configuring resources between said current serving cell and the serving cell to which said neighboring base station belongs based on said serving cell list and said neighboring base station, further comprises:
if any service cell in the current service cell enters a normal state, sending a configuration updating flow to the adjacent base station, wherein the configuration updating flow carries the state information of any service cell in the current service cell;
and the adjacent cell stores the state information of any service cell in the current service cell, and if any service cell in the service cell to which the adjacent cell belongs needs to carry out intra-cell terminal load distribution, the distribution terminal in any service cell in the service cell to which the adjacent cell belongs is switched to any service cell in the current service cell.
9. The XN interface interaction method according to any one of claims 6 to 8, wherein any one of the serving cells and any one of the current serving cells belong to a co-coverage neighbor cell.
10. An electronic device comprising a memory, a processor and a computer program stored on said memory and executable on said processor, characterized in that said processor implements the steps of the XN interface interaction method according to any one of claims 1 to 9 when executing said program.
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| CN202111615010.2A CN114363928A (en) | 2021-12-27 | 2021-12-27 | XN interface interaction method and system |
| PCT/CN2022/121282 WO2023124308A1 (en) | 2021-12-27 | 2022-09-26 | Xn interface interaction method and system |
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| CN115529611A (en) * | 2022-09-15 | 2022-12-27 | 成都中科微信息技术研究院有限公司 | Method for NR system to indicate neighbor cell addition and deletion of opposite terminal service cell through Xn port |
| WO2023124308A1 (en) * | 2021-12-27 | 2023-07-06 | 浪潮通信技术有限公司 | Xn interface interaction method and system |
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| CN102917379B (en) * | 2011-08-04 | 2017-09-26 | 南京中兴软件有限责任公司 | Load information interactive method and system |
| CN111510963B (en) * | 2019-01-31 | 2021-05-18 | 电信科学技术研究院有限公司 | Signaling interaction method, base station and device |
| US20230074423A1 (en) * | 2020-02-13 | 2023-03-09 | Ntt Docomo, Inc. | Terminal, radio communication method, and base station |
| CN114363928A (en) * | 2021-12-27 | 2022-04-15 | 浪潮通信技术有限公司 | XN interface interaction method and system |
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| CN101594681A (en) * | 2008-05-27 | 2009-12-02 | 中兴通讯股份有限公司 | A kind of method that realizes the self-optimizing of LTE system |
| CN101784135A (en) * | 2009-01-19 | 2010-07-21 | 中兴通讯股份有限公司 | Method and system for transmitting cell mobility state information in LTE (Long Term Evolution) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023124308A1 (en) * | 2021-12-27 | 2023-07-06 | 浪潮通信技术有限公司 | Xn interface interaction method and system |
| CN115529611A (en) * | 2022-09-15 | 2022-12-27 | 成都中科微信息技术研究院有限公司 | Method for NR system to indicate neighbor cell addition and deletion of opposite terminal service cell through Xn port |
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