CN112839339A - System information sending method, network equipment, base station and storage medium - Google Patents

System information sending method, network equipment, base station and storage medium Download PDF

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CN112839339A
CN112839339A CN201911158658.4A CN201911158658A CN112839339A CN 112839339 A CN112839339 A CN 112839339A CN 201911158658 A CN201911158658 A CN 201911158658A CN 112839339 A CN112839339 A CN 112839339A
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cell
logical
priority
system information
logical cell
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CN112839339B (en
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黎慰
胡敏
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]

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Abstract

The embodiment of the invention provides a system information sending method, network equipment and a storage medium, wherein a CU does not need to issue Other SI for each logical cell, only selects one logical cell as a representative target logical cell for one physical cell, and then sends the Other SI for the target logical cell to a DU, so that the times of issuing the Other SI by the CU can be reduced to a great extent, and the overhead of an F1 interface between the CU and the DU is reduced. Meanwhile, the logical cells corresponding to the same physical cell can be independent from each Other in the allocation of Other SI, and do not affect each Other, which can greatly improve the flexibility of an operator in allocating Other SI parameters for the logical cells.

Description

System information sending method, network equipment, base station and storage medium
Technical Field
The present invention relates to the field of communications, and in particular, to a method for sending system information, a network device, a base station, and a storage medium.
Background
With the development of mobile communication technology, 5G (5rd Generation, fifth Generation) mobile communication technology has come into the field of people. In terms of 5G RAN (Radio Access Network) architecture, 3GPP (3rd Generation Partnership Project) has determined a CU/DU (Central Unit/Distributed Unit) architecture scheme: the CU and DU accomplish signaling and data transfer over the F1 interface, where the CU mainly handles non-real-time radio high-level protocol stack functions and the DU mainly handles physical layer functions and layer 2 functions for real-time requirements.
In 5G, one physical cell may be mapped to multiple logical cells through network sharing, and the logical cells share the resources of the same physical cell. For Other System Information, namely System Information Block (SIB) 1, DU can only be sent according to the physical cell when it is issued to the UE side, but the CU side is configured to issue reselection related parameters to the DU and all the parameters are sent in units of physical cells. This results in that the CU sends the Other SI for the same physical cell to the DU multiple times, resulting in unnecessary overhead for the F1 interface.
Disclosure of Invention
The system information sending method, the network equipment, the base station and the storage medium provided by the embodiment of the invention mainly solve the technical problems that: how to reduce the F1 interface overhead when the system information interaction is carried out between the CU and the DU.
In order to solve the above technical problem, an embodiment of the present invention provides a method for sending system information, including:
configuring a mapping relation between a physical cell and a logical cell and the priority between the logical cells corresponding to the physical cell;
sending the mapping relation and the priority to the CU through an F1 interface message;
receiving Other SI issued by the CU aiming at a target logical cell, wherein the target logical cell is one determined by the CU from each logical cell in a normal current state according to priority, and the Other SI is system information except SIB 1;
and issuing Other SI to the physical cell.
The embodiment of the invention also provides a system information sending method, which comprises the following steps:
receiving an F1 interface message sent by the DU;
acquiring a mapping relation between a physical cell and a logical cell and the priority between the logical cells corresponding to the physical cell from the F1 interface message;
determining a target logical cell with a normal state from all logical cells corresponding to the physical cell according to the priority, wherein Other SI of the target logical cell is used for representing Other SI of the physical cell, and the Other SI is system information except SIB 1;
and generating Other SI according to reselection parameters configured for the target logical cell by the network management system and sending the Other SI to the DU.
The embodiment of the invention also provides a system information sending method, which comprises the following steps:
the DU configures the mapping relation between the physical cell and the logical cell and the priority between the logical cells corresponding to the physical cell;
the DU sends the mapping relation and the priority to the CU through an F1 interface message;
the CU acquires the mapping relation between the physical cell and the logical cell and the priority between the logical cells corresponding to the physical cell from the F1 interface message;
the CU determines a target logical cell with a normal state from all the logical cells corresponding to the physical cell according to the priority, wherein Other SI of the target logical cell is used for representing Other SI of the physical cell, and the Other SI is system information except SIB 1;
CU generates Other SI according to reselection parameters configured by the network management system for the target logical cell and sends the Other SI to DU;
the DU issues the Other SI to the physical cell.
The embodiment of the invention also provides network equipment, which comprises a processor, a memory and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is used for executing a first system information sending program stored in the memory so as to realize the steps of the first system information sending method; or the processor is used for executing a second system information sending program stored in the memory so as to realize the steps of the second system information sending method.
The embodiment of the invention also provides a base station, which comprises a CU and at least one DU, wherein the DU is in communication connection with the CU; the DU is network equipment for the processor to execute a first system information sending program; the CU is a network device in which the processor executes a second system information transmission program.
An embodiment of the present invention further provides a storage medium, where any one of a first system information transmission program and a second system information transmission program is stored, where the first system information transmission program is executable by one or more processors to implement the steps of the first system information transmission method; the second system information transmission program may be executed by one or more processors to implement the aforementioned steps of the second system information transmission method.
The invention has the beneficial effects that:
according to the system information transmission method, the network device, the base station, and the storage medium provided in the embodiments of the present invention, the DU may configure a mapping relationship between the physical cell and the logical cell and a priority between the logical cells corresponding to the physical cell, and transmit the mapping relationship and the priority to the CU. After acquiring the mapping relationship and the priority, the CU may determine a target logical cell in a normal state from each logical cell corresponding to the physical cell according to the priority, then generate and send Other SI to the DU according to the reselection parameters configured by the network management system for the target logical cell, and after receiving the Other SI of the target logical cell, the DU sends the Other SI as the Other SI of the physical cell to the UE side. In the system information sending method, a CU does not need to issue Other SI for each logical cell, but only selects one logical cell as a representative target logical cell for one physical cell, and then sends the Other SI for the target logical cell to a DU, so that the DU uses the Other SI of the target logical cell to characterize the Other SI of the physical cell. Therefore, the times of issuing Other SI by the CU can be reduced to a great extent, and the overhead of the interface between the CU and the DU F1 is reduced. Meanwhile, in the related art, since the CU sends the Other SI to the DU in units of logical cells, in order to avoid that the Other SI contradiction of each logical cell affects the DU to issue the Other SI, the CU side needs to ensure that configured Other SI parameters are consistent for each logical cell of the same physical cell, but according to the scheme provided by the present invention in real time, the logical cells corresponding to the same physical cell may be independent of each Other in the configuration of the Other SI, without affecting each Other, which may greatly improve the flexibility of the operator in configuring the Other SI parameters for the logical cells.
Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic diagram of a base station according to a first embodiment of the present invention;
fig. 2 is an interaction flowchart of a method for sending system information according to a first embodiment of the present invention;
fig. 3 is an interaction flowchart of a system information sending method according to a second embodiment of the present invention;
fig. 4 is a flowchart of an interaction between a CU and a DU provided in the third example 1 according to the embodiment of the present invention;
fig. 5 is a flowchart of an interaction between a CU and a DU provided in the third example 2 according to the embodiment of the present invention;
fig. 6 is a schematic hardware structure diagram of a network device according to a fourth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a base station according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
the protocol SIB (System Information Block) supports multiple PLMN (Public Land Mobile Network) groups, so that the Network sharing mode is very flexible and can meet the requirements of Network sharing of different operators.
In order to solve the problems in the related art that when at least two logical cells exist in one physical cell, the flexibility of the allocation of Other SI in each logical cell is limited, and the FI interface overhead caused when a CU issues the Other SI to a DU is large, this embodiment provides a system information sending method, which is mainly applied to the base station shown in fig. 1:
in fig. 1, the base station 10 includes a CU 11 and a DU 12, the DU 12 and the CU 11 may be deployed separately, and interaction (including signaling interaction and data transmission) between the CU 11 and the DU 12 is implemented through an F1 interface. It is understood that in fig. 1, only one DU 12 is shown in the base station 10, but in other examples, one base station 10 may simultaneously include two or more DUs.
Please refer to a flowchart of a system information sending method shown in fig. 2 below:
s202: the DU configures a mapping relationship between a physical cell and a logical cell and a priority between logical cells corresponding to the physical cell.
It is needless to say that the mapping relationship configured by the DU for one physical cell may embody each logical cell corresponding to the physical cell. The priority of each logical cell may represent a possible order in which the logical cells become the target logical cells to be selected in the target logical cell selection process, wherein the higher the priority of one logical cell is, the higher the probability that the logical cell becomes the target logical cell in one selection process is.
In some examples of this embodiment, when configuring the priorities of the logical cells corresponding to the physical cells, the DUs may be randomly configured, as long as the priorities of the logical cells are guaranteed to be different from each other, because only if the priorities of the logical cells in the same physical cell are guaranteed to be different from each other, it can be guaranteed that a logical cell can be uniquely selected as the target logical cell every time the CU selects the target logical cell.
In other examples of this embodiment, when the DU configures priorities for logical cells of the same physical cell, the DU may be configured according to an operator policy, for example, there are logical cells a, b, and c in a certain physical cell at the same time, and the operator indicates that the access priorities of the UE accessing the three logical cells are b, c, and a in order from high to low, which means that the UE should access the b logical cell preferentially, then the c logical cell, and then the a logical cell. In this case, when the DU determines the priority for each logical cell in the physical cell, the access priority order may be followed, and the priorities configured for the logical cells a, b, and c are 1, 3, and 2 in order according to the access priority order (here, a higher value means a higher priority).
S204: the DU sends the mapping and priority to the CUs via F1 interface messages.
After the DU configures the mapping relationships and the priorities, the mapping relationships and the priorities may be sent to the CUs through F1 interface messages. In some examples of this embodiment, the SIB code stream carrying the mapping relationship and the priority includes at least one of an F1 SETUP REQUEST (F1 SETUP REQUEST) message and a gNB-DU CONFIGURATION UPDATE (gNB-DU CONFIGURATION UPDATE) message. In some examples of this embodiment, the DU may send the mapping relationship and the priority to the CU through the F1 establishment request message, and in other examples of this embodiment, the DU may also send the mapping relationship and the priority to the CU through the gNB-DU configuration update message. It is to be understood that the mapping relation and the priority may not be sent to the CUs together, for example, the DU may send the mapping relation to the CU using the F1 setup request message, and send the priority to the CU using the gNB-DU configuration update message.
In some examples of this embodiment, the DU may indicate the priority to the CU in the F1 interface message in any one of the following two ways:
the first method is as follows: the DU carries a special priority indication field in the F1 interface message, and the priority indication field is used to indicate the priority corresponding to each logical cell, for example, in an example, the priority indication field corresponding to logical cell a is "250", the priority indication field corresponding to logical cell b is "270", which indicates that the priorities of logical cells a and b are 250 and 270, respectively, and the priority of logical cell b is higher than the priority of logical cell a.
The second method comprises the following steps: in this way, the F1 interface message may not carry a special field indicating priority, however, DU may be filled in according to a preset rule when filling the PLMN list in SIB1 code stream, and this rule is known to the CU side. For example, the DU and the CU agree that the filling order of each logical cell in the PLMN is the descending order of priority of each logical cell, and the DU can be sequentially filled in the order from high to low of the priority of the logical cells when filling the PLMN list, so that after receiving the SIB1 code stream, the CU can know that the priority of each logical cell is low according to the filling order in the PLMN list. Optionally, in an example of the present embodiment, if the PLMN corresponding to logical cell a is PLMN1, and the PLMN corresponding to logical cell b is PLMN2, and the priority of logical cell b is higher than that of logical cell a, the filling order in the PLMN list may be { PLMN2, PLMN1 }.
It is needless to say that, when the CU is instructed about the priority order of each logical cell in the above manner, the logical cells may be sequentially filled in the order from the DU to the logical cell priority, but the filling order of the logical cells in the PLMN in the agreement between the DU and the CU is the ascending order of the priority of the logical cells. Taking the PLMN corresponding to logical cell c as PLMN3, the PLMN corresponding to logical cell d as PLMN4, and the priority of logical cell c is higher than that of logical cell d, according to this filling principle, the filling order in the PLMN list should be { PLMN4, PLMN3 }.
S206: the CU acquires the mapping relationship between the physical cell and the logical cell and the priority between the logical cells corresponding to the physical cell from the F1 interface message.
After receiving the F1 interface message transmitted by the DU through the F1 interface, the CU may obtain the mapping relationship between the physical cell and the logical cell according to the F1 interface message, and may also obtain the priority of each logical cell corresponding to one physical cell according to the F1 interface message. Since there are two ways when the DU indicates the priority of each logical cell to the CU, there are also two ways when the CU acquires the priority from the F1 interface message:
the first method is as follows: and the CU determines the priority of each logical cell according to the priority indication field carried by the F1 interface message. This is simple, if the priority indication field corresponding to logical cell a is "30" and the priority indication field corresponding to logical cell b is "70", it means that the priorities of logical cells a and b are 30 and 70, respectively, and the priority of logical cell b is higher than that of logical cell a.
The second method comprises the following steps: in this way, the CU and DU have pre-agreed filling rules for the PLMN list in the F1 interface message, and the CU may determine the priority of each logical cell according to the pre-established filling rules and the actual filling order of the received PLMN list. Assuming that the filling rule agreed in advance by the CU and the DU is a PLMN list descending order filling rule, and the PLMN list in the received F1 interface message is { PLMN2, PLMN1}, it indicates that the priority of logical cell b corresponding to PLMN2 is higher than the priority of logical cell a corresponding to PLMN 1. Conversely, if the filling rule agreed in advance by the CU and the DU is the PLMN list ascending filling rule, and the PLMN list in the received F1 interface message is also { PLMN2, PLMN1}, it indicates that the priority of logical cell a is higher than that of logical cell b.
S208: and the CU determines a target logical cell with a normal state from all the logical cells corresponding to the physical cell according to the priority.
After the CU determines the mapping relationship from the SIB1 code stream, it can determine which logical cells correspond to the same physical cell, so that the CU knows which logical cells should be selected when selecting a target logical cell for a physical cell.
After determining the priority, the CU can determine which logical cell to select as the target logical cell. In some examples of this embodiment, a CU may select one logical cell with the highest priority as the target logical cell. Of course, in some other examples of this embodiment, a CU may not select one of the highest priority logical cells as the target logical cell, but select the next highest priority logical cell, or randomly select one of the first n% higher priority logical cells as the target logical cell.
It should be understood that the target logical cell selected by the CU should be normally-conditioned, not state-blocked, so in some examples of this embodiment, the CU selects only the logical cell in which the current state is normal according to the priority when selecting the target logical cell.
S210: and the CU generates Other SI according to the reselection parameters configured for the target logical cell by the network management system and sends the Other SI to the DU.
In a network management system, corresponding reselection parameters are generally configured for each logical cell, and the reselection parameters corresponding to each logical cell may be configured by an operator corresponding to the logical cell. Therefore, after the CU determines a target logical cell, the CU may obtain the reselection parameter configured for the target logical cell in the network management system, generate the Other SI for the target logical cell based on the reselection parameter, and then send the Other SI to the DU. In some examples of this embodiment, a CU may send the Other SI of the target logical cell to the DU via a gNB-CU CONFIGURATION UPDATE (GNB-CU CONFIGURATION UPDATE) message. Of course, in some Other examples of this embodiment, the CU may also carry the Other SI of the target logical cell to the DU through Other messages.
It can be understood that, when a CU issues an Other SI to a DU, the CU only issues the current target logical cell, and there is only one target logical cell, so the Other SI obtained by the DU each time is unique, and the DU cannot receive two or more Other SIs with incompletely identical reselection parameters at the same time regardless of the reselection parameter configuration condition of the CU side for each logical cell, that is, the DU cannot encounter different contradictions of the received Other SIs regardless of the reselection parameter configuration condition of the CU side for each logical cell, so the configuration of the reselection parameters of each logical cell at the CU side is more flexible and not limited, and each operator can independently configure the reselection parameters of the corresponding logical cell according to its own requirement without considering the configuration results of Other operators.
S212: the DU issues the received Other SI to the physical cell.
After the DU receives the Other SI delivered by the CU for the target logical cell, the Other SI may be delivered to the UE side. In this embodiment, the DU only receives the Other SI of one logical cell at the same time, so the DU does not need to select before issuing the Other SI, and can directly perform the issuing operation after receiving the Other SI sent by the CU.
There may be cases in some examples of the present embodiments where: after the CU selects a target logical cell and issues the Other SI according to the reselection parameter item DU of the target logical cell, the state of the target logical cell is switched to the blocking state, and then in the subsequent process, the CU cannot indicate the Other SI of the physical cell through the Other SI of the logical cell any more, so the CU needs to reselect a new target logical cell and use the new target logical cell to replace the original target logical cell to represent the Other SI of the physical cell to the DU side. Alternatively, the CU may select, according to the previously obtained priority, one logical cell with the highest priority from the remaining logical cells in the current state, as the target logical cell.
In the related art, when a CU indicates a DU to block a certain logical cell, the CU also performs the blocking in units of the logical cell, so to avoid mutual contradiction between messages received by the DU, once the CU needs to indicate to block the certain logical cell, it needs to be ensured that all the indication messages sent to the DU indicate the blocking of the logical cell, that is, all the logical cells corresponding to the same physical cell are blocked, and the blocking of part of the logical cells cannot be realized, which may seriously affect the service experience of the user. However, in this embodiment, because the parameter configurations of the logical cells are independent from each other, the blocking of a part of the logical cells can be realized, so that the cell blocking process is more targeted.
In the system information sending method provided in this embodiment, for one physical cell, a CU only needs to perform Other SI issue once, and does not need to perform Other SI issue for each logical cell of the physical cell, so that the overhead of the F1 interface is greatly reduced.
Meanwhile, each operator can independently perform reselection parameter configuration of the corresponding logical cell, so that the flexibility of parameter configuration among the logical cells can be improved, the autonomy of the operators is enhanced, and the management experience of the operators is improved.
Example two:
the present embodiment will further describe the system information sending method with reference to an example on the basis of the foregoing embodiment, please refer to the flowchart shown in fig. 3:
s302: after the DU configures the priorities of the logical cells mapped by the same physical cell, the logical cells are sorted according to the priorities, and a PLMN list in the SIB1 code stream is filled according to the sorting result.
In this embodiment, the DU indicates the priority of each logical cell corresponding to the same physical cell to the CUs in the manner described in the foregoing embodiment, but in other examples of this embodiment, the DU may also indicate the priority to the CU in a first manner.
S304: the DU sends F1 setup request message to CU over F1 interface.
In this embodiment, the F1 establishment request message carries the mapping relationship between the physical cell and the logical cell and the priority of each logical cell. In some other examples of this embodiment, the DU may also send a gNB-DU configuration update message to the CU through the F1 interface, and notify the CU of the mapping relationship between the physical cell and the logical cell and the priority of each logical cell by using the gNB-DU configuration update message.
S306: and the CU acquires the mapping relation between the physical cell and the logical cell and the priority order of each logical cell corresponding to the same physical cell according to the received SIB1 code stream.
S308: the CU determines the cell state of each logical cell and reselection parameters configured independently for each logical cell.
In this embodiment, the states of the logical cell are divided into a normal state and a blocking state. Reselection parameters refer to parameters related to reselection, such as measurement objects, handover thresholds, reselection duration, and the like. It is understood that reselection is divided into intra-frequency reselection, inter-frequency reselection, and inter-system reselection.
S310: and the CU screens out a logic cell with a normal state and the highest priority as a target logic cell according to the acquired priority.
S312: and the CU fills out the Other SI according to the reselection parameters corresponding to the target logical cell.
S314: the CU sends the filled Other SI to the DU through an F1 interface message gNB-CU configuration update message.
S316: the DU sends the received Other SI to the UE side.
In the system information sending method provided by this embodiment, the configuration parameters between the logical cells corresponding to the same physical cell do not need to be constrained, so that the parameter configuration policy of each operator is more flexible. Moreover, after a CU blocks a certain logical cell, the CU can easily select the logical cell with the normal state of the second highest priority as a new target logical cell to update the Other SI information, and remove the cell information with the incorrect state and the PLMN from the SIB1, thereby avoiding unnecessary message transmission overhead of the Other SI package and the F1 port of the CU. Moreover, by applying the priority of the logical cell, cell reselection and blocking under the network sharing scene can be realized on the basis of smaller F1 port overhead.
Example three:
in order to make the advantages and details of the system information sending method provided by the embodiment of the present invention clearer for those skilled in the art, the embodiment will further describe the system information sending scheme with reference to an example:
example 1:
assuming that there is a physical Cell CellA under the DU physical entity, a logical Cell1 (PlmnGroup 1, including Plmn1 operator 1) and a Cell2 (PlmnGroup 2, including Plmn2 operator 2) are configured, and the Cell1 and the Cell2 share the physical resources of the physical Cell CellA. The priority of the DU-side configuration logical Cell1 is 240, and the priority of the logical Cell2 is 250.
Meanwhile, it is assumed that the reselection parameters configured for the logical cells Cell1 and Cell2 in the CU physical entity are P1 and P2, respectively.
Please refer to fig. 4 to show a flow chart of the interaction between DUs and CUs:
s402: the DU fills out a PLMN-identity infolist (PLMN identity information list) according to preset filling rules and configured priorities for the respective logical cells.
In an example of this embodiment, the DU fills in the PLMN-identity infolist in the SIB1 code stream according to the descending filling rule, fills in PLMN2 supported by the logical Cell2 before, and fills in PLMN1 supported by the logical Cell1 after, that is, { PLMN2, PLMN1 }.
S404: the DU informs the CU of SIB1 code stream carrying the priority of the logical cell through F1 interface message.
S406: the CU analyzes the SIB1 code stream, and obtains the mapping relation between the physical cell and the logical cell and the priority of each logical cell mapped by the same physical cell.
S408: the CU acquires reselection parameters P1 and P2 corresponding to the logical cells Cell1 and Cell2 from the background.
S410: the CU selects the logical Cell2 with the highest priority as the target logical Cell according to the priorities of the logical cells.
S412: and the CU fills out Other SI according to the reselection parameter P2 of the target logical cell and issues an update message to the DU through the gNB-CU configuration.
Example 2:
assuming that there is a physical Cell CellB under the physical entity of the DU, configuring a logical Cell1 (configuring PlmnGroup1 including Plmn1 operator 1), a Cell2 (configuring PlmnGroup2 including Plmn2 operator 2), and a Cell3 (configuring PlmnGroup3 including Plmn3 operator 3), all three logical cells share the physical resources of the physical Cell CellB; the priority of the DU-side configuration logical Cell1 is 240, the priority of the logical Cell2 is 250, and the priority of the logical Cell3 is 245.
Meanwhile, it is assumed that reselection parameters respectively configured for logical cells Cell1, Cell2, and Cell3 in the CU physical entity are P1, P2, and P3, and the CU side configures the logical Cell2 state as a block, and the logical Cell1 and the logical Cell3 state as normal.
Please refer to fig. 5 to show a flow chart of the interaction between DUs and CUs:
s502: the DU fills out PLMN-identity infolist according to preset filling rules and configured priorities for each logical cell.
Since the state of the logical Cell2 is blocked, when the DU compiles the PLMN-identity infolist in the SIB1 code stream, after filtering out the blocked logical Cell2, sorting according to the logical Cell priority, filling the PLMN3 supported by the logical Cell3 before, and filling the PLMN1 supported by the logical Cell1 after, that is, { PLMN3, PLMN1 }.
S504: the DU informs the CU of SIB1 code stream carrying the priority of the logical cell through F1 interface message.
S506: the CU analyzes the SIB1 code stream, and obtains the mapping relation between the physical cell and the logical cell and the priority of each logical cell mapped by the same physical cell.
S508: and the CU acquires reselection parameters P1, P2 and P3 corresponding to the logical cells Cell1, Cell2 and Cell3 from the background.
S510: the CU filters out the blocked logical Cell2, and selects the logical Cell3 with the highest priority as the target logical Cell according to the priority of the logical Cell.
S512: and the CU fills out Other SI according to the reselection parameter P3 of the target logical cell and issues an update message to the DU through the gNB-CU configuration.
Example four:
this embodiment provides a storage medium, in which one or more computer programs that can be read, compiled, and executed by one or more processors are stored, and in this embodiment, the computer readable storage medium may store one of a first system information transmission program and a second system information transmission program, where the first system information transmission program can be used by the one or more processors to execute a flow on the DU side of a system information transmission method described in the foregoing embodiment, and the second system information transmission program can be used by the one or more processors to execute a flow on the CU side of a system information transmission method described in the foregoing embodiment.
In this embodiment, referring to fig. 6, the network device 60 includes a processor 61, a memory 62, and a communication bus 63 for connecting the processor 61 and the memory 62, where the memory 62 may be the storage medium storing the first system information sending program, and the processor 61 may read the first system information sending program, compile and execute a procedure for implementing the DU side of the system information sending method described in the foregoing embodiment, and at this time, the network device 60 is a network device on the DU side:
the processor 61 configures the mapping relationship between the physical cell and the logical cell and the priority between the logical cells corresponding to the physical cell, and sends the mapping relationship and the priority to the CU through an F1 interface message. Subsequently, the processor 61 receives Other system information Other SI issued by the centralized unit for the target logical cell, and issues Other SI to the physical cell.
The target logical cell is one of the logical cells determined by the CU from the current state according to the priority, and Other SI is system information except a system information block SIB 1;
in an example of the embodiment, when the processor 61 sends the mapping relationship and the priority to the CU through the F1 interface message, the mapping relationship and the priority may be sent to the CU through the F1 establishment request message;
and/or processor 61 sends the mapping relation and the priority to the CU through a gNB-DU configuration update message.
In an example of the present embodiment, a priority indication field is included in the F1 interface message, and the priority indication field is used for indicating the priority of the logical cell.
In another example of this embodiment, the PLMN list in the F1 interface message fills the logical cells corresponding to the physical cells according to the filling rule of ascending or descending priority.
In some other examples of this embodiment, the memory 62 may be the storage medium storing the second system information sending program, and the processor 61 may read the second system information sending program, compile and execute the flow implementing the system information sending method CU side described in the foregoing embodiment, in this case, the network device 60 is a network device on the CU side:
the processor 61 receives the F1 interface message sent by the DU, and then acquires the mapping relationship between the physical cell and the logical cell and the priority between the logical cells corresponding to the physical cell from the F1 interface message. Then, the processor 61 determines a target logical cell with a normal state from the logical cells corresponding to the physical cell according to the priority, generates Other SI according to reselection parameters configured for the target logical cell by the network management system, and sends the Other SI to the DU. The Other SI of the target logical cell is used to characterize the Other SI of the physical cell, which is system information outside the system information block SIB 1.
When the processor 61 determines a target logical cell in a normal state from the logical cells corresponding to the physical cell according to the priority, the processor may select one of the logical cells in the normal state corresponding to the physical cell with the highest priority as the target logical cell.
In an example of this embodiment, when acquiring the priority between the logical cells corresponding to the physical cell from the F1 interface message, the processor 61 may determine the priority of each logical cell according to the priority indication field carried in the F1 interface message.
In an example of this embodiment, when acquiring the priority among the logical cells corresponding to the physical cell from the F1 interface message, the processor 61 may determine the priority of each logical cell according to a preset ascending filling rule or a descending filling rule in combination with the filling order of each logical cell in the PLMN list of the F1 interface message.
Alternatively, when the processor 61 sends the Other SI to the DU, the Other SI may be sent to the DU through a gNB-CU configuration update message.
In some examples of the present embodiment, after the state of the original target logical cell is switched to the blocking state, the processor 61 may select, according to the priority, one with the highest priority from the remaining logical cells in the normal state as the new target logical cell.
Referring to fig. 7, the base station 70 includes a CU71 and at least one DU 72, and each DU 72 is communicatively connected to a CU71, where the CU71 may be a network device in which the processor 61 executes a second system information sending procedure, and the DU 72 may be a network device in which the processor 61 executes a first system information sending procedure.
DU 72 configures the mapping relationship between the physical cells and the logical cells and the priorities between the logical cells corresponding to the physical cells, and then sends the mapping relationship and the priorities to CU71 through an F1 interface message.
The CU71 obtains the mapping relationship between the physical cell and the logical cell and the priority between the logical cells corresponding to the physical cell from the F1 interface message, and then determines a target logical cell with a normal state from the logical cells corresponding to the physical cell according to the priority, where the Other SI of the target logical cell is used to represent the Other SI of the physical cell, and the Other SI is system information Other than SIB 1. Subsequently, CU71 generates Other SI according to the reselection parameters configured by the network management system for the target logical cell and sends the Other SI to DU 72.
After DU 72 receives Other SI issued by CU71 for the target logical cell, the physical cell issues the Other SI.
In this embodiment, the CU does not need to issue the Other SI for each logical cell, but only selects one logical cell as a representative target logical cell for one physical cell, and then sends the Other SI for the target logical cell to the DU, so that the DU uses the Other SI of the target logical cell to characterize the Other SI of the physical cell. Therefore, the times of issuing Other SI by the CU can be reduced to a great extent, and the overhead of the interface between the CU and the DU F1 is reduced. Meanwhile, in the related art, since the CU sends the Other SI to the DU in units of logical cells, in order to avoid that the Other SI contradiction of each logical cell affects the DU to issue the Other SI, the CU side needs to ensure that configured Other SI parameters are consistent for each logical cell of the same physical cell, but according to the scheme provided by the present invention in real time, the logical cells corresponding to the same physical cell may be independent of each Other in the configuration of the Other SI, without affecting each Other, which may greatly improve the flexibility of the operator in configuring the Other SI parameters for the logical cells.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software (which may be implemented in program code executable by a computing device), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed over computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media), executed by a computing device, and in some cases may perform the steps shown or described in a different order than here. The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (12)

1. A method for sending system information comprises the following steps:
configuring a mapping relation between a physical cell and a logical cell and a priority between the logical cells corresponding to the physical cell;
sending the mapping relation and the priority to a Central Unit (CU) through an F1 interface message;
receiving Other system information Other SI issued by the CU aiming at a target logical cell, wherein the target logical cell is determined by the CU from each logical cell in a normal current state according to the priority, and the Other SI is system information except a system information block SIB 1;
and issuing the Other SI to the physical cell.
2. The method for sending system information according to claim 1, wherein the sending the mapping relationship and the priority to CUs through an F1 interface message comprises:
sending the mapping relation and the priority to the CU through an F1 establishment request message;
and/or the presence of a gas in the gas,
and sending the mapping relation and the priority to the CU through a gNB-DU configuration updating message.
3. The method for sending system information according to claim 1, wherein the F1 interface message includes a priority indication field, and the priority indication field is used to indicate the priority of a logical cell; or, the PLMN list in the F1 interface message fills in each logical cell corresponding to the physical cell according to the filling rule of ascending order or descending order of priority.
4. A method for sending system information comprises the following steps:
receiving an F1 interface message sent by a distribution unit DU;
acquiring a mapping relation between a physical cell and a logical cell and a priority between the logical cells corresponding to the physical cell from the F1 interface message;
determining a target logical cell with a normal state from all logical cells corresponding to the physical cell according to the priority, wherein Other SI of the target logical cell is used for representing Other SI of the physical cell, and the Other SI is system information except SIB 1;
and generating Other SI according to reselection parameters configured for the target logical cell by the network management system and sending the Other SI to the DU.
5. The method for sending system information according to claim 4, wherein the determining a target logical cell with a normal state from the logical cells corresponding to the physical cell according to the priority includes:
and selecting one with the highest priority from the corresponding logical cells in the normal state of the physical cell as a target logical cell.
6. The method for sending system information according to claim 4, wherein obtaining the priority between the logical cells corresponding to the physical cell from the F1 interface message includes:
determining the priority of each logic cell according to a priority indication field carried by the F1 interface message;
or the like, or, alternatively,
and determining the priority of each logical cell according to a preset ascending filling rule or a descending filling rule in combination with the filling sequence of each logical cell in the PLMN list of the F1 interface message.
7. The method for sending system information as claimed in claim 4, wherein said sending the Other SI to the DU comprises:
and sending the Other SI to the DU through a gNB-CU configuration update message.
8. The method for transmitting system information according to any of claims 4-7, wherein the method for transmitting system information further comprises:
and after the state of the original target logic cell is switched to the blocking state, selecting one with the highest priority from the logic cells with the normal residual states as a new target logic cell according to the priority.
9. A method for sending system information comprises the following steps:
the DU configures the mapping relation between a physical cell and a logical cell and the priority of each logical cell corresponding to the physical cell;
the DU sends the mapping relation and the priority to a CU through an F1 interface message;
the CU acquires the mapping relation between a physical cell and a logical cell and the priority of each logical cell corresponding to the physical cell from the F1 interface message;
the CU determines a target logical cell with a normal state from all the logical cells corresponding to the physical cell according to the priority, wherein Other SI of the target logical cell is used for representing Other SI of the physical cell, and the Other SI is system information except SIB 1;
the CU generates Other SI according to reselection parameters configured by the network management system for the target logical cell and sends the Other SI to the DU;
and the DU issues the Other SI to the physical cell.
10. A network device comprising a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute a first system information transmission program stored in the memory to implement the steps of the system information transmission method according to any one of claims 1 to 3; or the processor is configured to execute a second system information transmission program stored in the memory to implement the steps of the system information transmission method according to any one of claims 4 to 8.
11. A base station comprising a CU and at least one DU communicatively connected to the CU; the DU is a network device in which the processor of claim 10 executes a first system information transmission procedure; the CU is a network device that the processor of claim 10 executes the second system information sending program.
12. A storage medium storing any one of a first system information transmission program executable by one or more processors to implement the steps of the system information transmission method according to any one of claims 1 to 3 and a second system information transmission program; the second system information transmission program is executable by one or more processors to implement the steps of the system information transmission method according to any one of claims 4 to 8.
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