CN111988831B - Information transmission method, device, CU and DU - Google Patents

Information transmission method, device, CU and DU Download PDF

Info

Publication number
CN111988831B
CN111988831B CN201910424019.1A CN201910424019A CN111988831B CN 111988831 B CN111988831 B CN 111988831B CN 201910424019 A CN201910424019 A CN 201910424019A CN 111988831 B CN111988831 B CN 111988831B
Authority
CN
China
Prior art keywords
cell
message
network mode
nsa
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910424019.1A
Other languages
Chinese (zh)
Other versions
CN111988831A (en
Inventor
何金招
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to CN201910424019.1A priority Critical patent/CN111988831B/en
Priority to PCT/CN2020/079795 priority patent/WO2020233209A1/en
Publication of CN111988831A publication Critical patent/CN111988831A/en
Application granted granted Critical
Publication of CN111988831B publication Critical patent/CN111988831B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

A method, apparatus, CU, DU and computer readable storage medium for information transfer, wherein the method comprises: the DU sends a first message to the CU; the first message is used for requesting at least one of cell establishment, cell parameter update and cell exit service; the DU receives a second message sent by the CU, wherein the second message carries information of a network mode of a cell, and the network mode comprises at least one of NSA and SA; and the DU informs the terminal corresponding to the cell of the information of the network mode of the cell. Through the embodiment of the invention, the DU can acquire the information of the network mode of the cell, so as to inform the terminal, and the condition that the connection establishment request initiated by the terminal supporting SA under the coexistence networking of NSA and SA cells is refused by the base station or the core network, so that the call failure is caused can be effectively avoided, the call completing rate is improved, and the user experience effect is improved.

Description

Information transmission method, device, CU and DU
Technical Field
This document relates to, but is not limited to, a method, apparatus, CU (Central Unit), DU (Distributed Unit) and computer readable storage medium for information transfer.
Background
Along with the continuous maturity of SA (independent networking) industry chain, in order to meet the requirements of initial NSA (Non-independent networking) and evolution SA terminal users, the smooth evolution of NSA network to SA network can be realized through NSA and SA coexistence networking scheme.
Under the mixed networking scene of SA and NSA, the SA and NSA cells are successfully established, a terminal supporting NSA can be accessed to an eNB (evolved Node B) network, and the eNB and a gNB (5G base station) establish dual-connection through X2 interface communication to access the NSA cells in an NR (New Radio) network to experience 5G service; the terminals supporting SA can access to the SA cell of the gNB network to experience 5G service.
However, since the existing mechanism of NSA and SA cell coexistence networking is not perfect, a terminal supporting SA may access to a base station cell incapable of providing SA service, resulting in a call failure.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the invention provides a method, a device, a CU, a DU and a computer readable storage medium for information transmission.
The embodiment of the invention provides an information transmission method, which comprises the following steps:
The CU receives a first message sent by the DU; the first message is used for requesting at least one of cell establishment, cell parameter update and cell exit service;
the CU determines a network mode of the cell; wherein the network mode includes at least one of NSA and SA;
the CU sends a second message to the DU, the second message carrying information of the network mode of the cell.
The embodiment of the invention also provides an information transmission method, which comprises the following steps:
the DU sends a first message to the CU; the first message is used for requesting at least one of cell establishment, cell parameter update and cell exit service;
the DU receives a second message sent by the CU, wherein the second message carries information of a network mode of a cell, and the network mode comprises at least one of NSA and SA;
and the DU informs the terminal corresponding to the cell of the information of the network mode of the cell.
The embodiment of the invention also provides an information transmission device, which comprises:
a first receiving module, configured to receive a first message sent by a DU; the first message is used for requesting at least one of cell establishment, cell parameter update and cell exit service;
A determining module, configured to determine a network mode of the cell; wherein the network mode includes at least one of NSA and SA;
and the first sending module is used for sending a second message to the DU, wherein the second message carries the information of the network mode of the cell.
The embodiment of the invention also provides an information transmission device, which comprises:
the second sending module is used for sending the first message to the CU; the first message is used for requesting at least one of cell establishment, cell parameter update and cell exit service;
a second receiving module, configured to receive a second message sent by the CU, where the second message carries information of a network mode of a cell, and the network mode includes at least one of NSA and SA;
and the informing module is used for informing the terminal corresponding to the cell of the information of the network mode of the cell.
The embodiment of the invention also provides a CU, which comprises: memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of information transmission when executing the program.
The embodiment of the invention also provides a DU, which comprises: memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of information transmission when executing the program.
The embodiment of the invention also provides a computer readable storage medium which stores computer executable instructions for executing the method for information transmission.
The embodiment of the invention comprises the following steps: the DU sends a first message to the CU; the first message is used for requesting at least one of cell establishment, cell parameter update and cell exit service; the DU receives a second message sent by the CU, wherein the second message carries information of a network mode of a cell, and the network mode comprises at least one of NSA and SA; and the DU informs the terminal corresponding to the cell of the information of the network mode of the cell. Through the embodiment of the invention, the DU can acquire the information of the network mode of the cell, so as to inform the terminal, and the condition that the connection establishment request initiated by the terminal supporting SA under the coexistence networking of NSA and SA cells is refused by the base station or the core network, so that the call failure is caused can be effectively avoided, the call completing rate is improved, and the user experience effect is improved.
Other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description.
Drawings
Fig. 1 is a schematic diagram of a SA and NSA hybrid networking scenario;
FIG. 2 is a flow chart of a method of information transmission according to an embodiment of the present invention;
Fig. 3 is a flowchart of a method of information transmission (applied to a CU) of an embodiment of the present invention;
fig. 4 is a flowchart of a method of information transmission (applied to a DU) of an embodiment of the present invention;
FIG. 5 is a flow chart of an example one of the present invention;
FIG. 6 is a flow chart of an application example II of the present invention;
FIG. 7 is a flow chart of an application example III of the present invention;
fig. 8 is a schematic diagram of the composition of an apparatus for information transmission (applied to a CU) according to an embodiment of the present invention;
fig. 9 is a schematic diagram of the composition of an apparatus for information transmission (applied to a DU) according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of the composition of a CU according to an embodiment of the present invention;
fig. 11 is a schematic diagram of the composition of a DU according to an embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, while a logical order is depicted in the flowchart, in some cases, the steps depicted or described may be performed in a different order than presented herein.
Referring to fig. 1, in the current NR-side cell establishment procedure, a DU initiates a cell establishment REQUEST (F1 SETUP REQUEST) message (cell support SA and NSA) to a CU through an F1 interface, the CU receives the cell establishment REQUEST, the CU initiates a NG establishment REQUEST (NG SETUP REQUEST) message to a 5GC (5G Core Network), the 5GC replies NG SETUP RESPONSE with a message, and the CU determines whether the cell can provide SA service according to the result of the response message; the CU interacts with the eNB X2 interface, and judges whether the cell can provide NSA service or not according to the interaction result; the CU completes NSA & SA judgment, the CU informs the DU cell GNB-CU configuration update (GNB-CU CONFIGURATION UPDATE) to activate the cell, and as DU can not sense whether the cell can provide SA service or not, the DU cell air interface broadcast carries the support SA & NSA, finally, the terminal (namely UE, user equipment) supporting SA initiates a connection establishment request to be refused by a core network which can not provide SA service, and the terminal user experience is influenced.
As shown in fig. 2, the method for transmitting information according to the embodiment of the present invention is performed on the NR side of a 5G base station, and includes:
in step 101, the DU sends a first message to the CU.
The first message is for requesting at least one of cell establishment, cell parameter update, and cell exit service.
When the first message is used for requesting cell establishment, the first message comprises an F1 establishment request; the first message is used for requesting cell parameter update, and the first message comprises a DU configuration update message; the first message is used for requesting the cell to exit the service, and the first message comprises a DU configuration update message.
Step 102, the CU determines a network mode of the cell.
Wherein the network mode includes at least one of NSA and SA.
In an embodiment, when the first message is used to request cell establishment or cell parameter update, the step 102 includes:
and the CU respectively carries out NSA cell judgment and SA cell judgment, and determines the network mode of the cell.
And the CU negotiates with the eNB, carries out NSA cell judgment according to the response of the eNB, and determines whether the cell supports NSA.
The CU negotiates with the AMF (Access and Mobility Management Function, access and mobility management functions) to make SA cell decisions based on the response of the AMF to determine whether the cell supports SA.
In an embodiment, when the first message is used to request the cell to exit from service, the step 102 includes:
the CU determines a network mode of the cell according to the first message.
Wherein the first message carries a network mode of the cell.
Step 103, the CU sends a second message to the DU, where the second message carries information of the network mode of the cell.
When the first message is used for requesting the establishment of a cell, the second message comprises an F1 establishment request response;
the first message is used for requesting the updating of the cell parameters, and the second message comprises a DU configuration updating response;
the first message is for requesting that the cell be out of service and the second message includes at least one of a CU configuration update message and a de-activate cell message.
Where typically a CU sends a CU configuration update message before sending a de-activation cell message.
In an embodiment, when the first message is used for requesting cell establishment or cell parameter update, the information of the network mode of the cell includes a network mode identifier supported by the cell, the second message carries an NCGI of the cell and a supported network mode identifier, and the network mode identifier includes at least one of an NSA identifier and an SA identifier.
In an embodiment, the first message is used for requesting a cell to exit from service, the second message is used for indicating a cell to block, the information of the network mode of the cell includes a network mode identifier to be blocked, the second message carries an NCGI (Cell Global Identifier, global cell identity) of the cell and the network mode identifier to be blocked, and the network mode identifier to be blocked includes at least one of NSA identifier and SA identifier.
In an embodiment, the first message is used for requesting a cell to exit from service, the second message is used for indicating a cell to be deactivated, the information of the network mode of the cell includes a deactivation network mode identifier, the second message carries an NCGI of the cell and the deactivation network mode identifier, and the deactivation network mode identifier includes at least one of an NSA identifier and an SA identifier.
Step 104, the DU informs the terminal corresponding to the cell of the information of the network mode of the cell.
In an embodiment, the DU informs the terminal corresponding to the cell of the information of the network mode of the cell by at least one of the following modes:
broadcasting, closing cell signals and presetting with a terminal.
The broadcasting mode may be an air interface broadcasting mode.
In an embodiment, the information of the network mode of the cell includes a network mode identifier supported by the cell, and the step 104 includes:
when the cell supports SA, the DU transmits a broadcast message carrying an identification supporting SA;
when the cell supports NSA, the DU transmits a broadcast message carrying NSA-supporting identification or does not transmit the broadcast message;
when the cell supports NSA and SA at the same time, the DU transmits a broadcast message carrying NSA supporting identification and AS supporting identification;
when the cell does not support NSA and SA, the DU turns off the cell signal.
When the cell supports NSA, the DU does not send a broadcast message, that is, a mode pre-agreed with the terminal, that is, if the cell is not indicated to support SA, only NSA is supported by default.
In an embodiment, the first message is used to request the cell to exit from service, and the second message is used to indicate that the cell is blocked, and the step 104 includes:
when the cell to be blocked network mode is SA, the DU sends a broadcast message carrying an SA cell forbidden access instruction;
When the cell to-be-blocked network mode is NSA, the DU transmits a broadcast message carrying an NSA cell access prohibition instruction;
and when the cell to be blocked network mode is NSA and SA, the DU transmits a broadcast message carrying NSA cell and SA cell forbidden access instructions.
In an embodiment, the first message is used to request the cell to exit from service, and the second message is used to instruct the cell to deactivate, where the step 104 includes:
the network mode of the cell is SA, and when the second message indicates that the SA network mode is deactivated, the DU turns off the cell signal;
the network mode of the cell is NSA, and the DU turns off the cell signal when the second message indicates that the NSA network mode is deactivated;
the network modes of the cell are NSA and SA, and the DU turns off the cell signal when the NSA network mode and the SA network mode are deactivated by the second message;
the network modes of the cell are NSA and SA, and when the second message indicates to deactivate the NSA network mode, the DU sends a broadcast message carrying that the NSA network mode is not available;
the network modes of the cell are NSA and SA, and the DU sends a broadcast message carrying that the SA network mode is not available when the SA network mode is deactivated by the second message.
Through the embodiment of the invention, the DU can acquire the information of the network mode of the cell, so as to inform the terminal, and the condition that the connection establishment request initiated by the terminal supporting SA under the coexistence networking of NSA and SA cells is refused by the base station or the core network, so that the call failure is caused can be effectively avoided, the call completing rate is improved, and the user experience effect is improved.
The CU and the DU are described below, respectively.
As shown in fig. 3, the method for transmitting information according to the embodiment of the present invention is applied to a CU, and includes:
in step 201, the cu receives a first message sent by the DU.
The first message is for requesting at least one of cell establishment, cell parameter update, and cell exit service.
When the first message is used for requesting cell establishment, the first message comprises an F1 establishment request; the first message is used for requesting cell parameter update, and the first message comprises a DU configuration update message; the first message is used for requesting the cell to exit the service, and the first message comprises a DU configuration update message.
Step 202, the CU determines a network mode of the cell.
Wherein the network mode includes at least one of NSA and SA.
In an embodiment, when the first message is used to request cell establishment or cell parameter update, the step 202 includes:
And the CU respectively carries out NSA cell judgment and SA cell judgment, and determines the network mode of the cell.
In an embodiment, the CU negotiates with an eNB to make NSA cell decisions according to the eNB's response to determine whether the cell supports NSA.
The CU and the eNB can carry out communication negotiation through an X2 interface, and NSA cell judgment is carried out according to the 4G response.
In an embodiment, the CU negotiates with the AMF to perform a SA cell decision according to the response of the AMF, and determines whether the cell supports SA.
The CU performs interactive negotiation with the AMF, and performs SA cell judgment according to AMF response.
In an embodiment, when the first message is used to request the cell to exit from service, the step 202 includes:
the CU determines a network mode of the cell according to the first message.
Wherein the first message carries a network mode of the cell.
In step 203, the CU sends a second message to the DU, where the second message carries information of the network mode of the cell.
When the first message is used for requesting the establishment of a cell, the second message comprises an F1 establishment request response;
the first message is used for requesting the updating of the cell parameters, and the second message comprises a DU configuration updating response;
The first message is for requesting that the cell be out of service and the second message includes at least one of a CU configuration update message and a de-activate cell message.
Where typically a CU sends a CU configuration update message before sending a de-activation cell message.
In an embodiment, when the first message is used for requesting cell establishment or cell parameter update, the information of the network mode of the cell includes a network mode identifier supported by the cell, the second message carries an NCGI of the cell and a supported network mode identifier, and the network mode identifier includes at least one of an NSA identifier and an SA identifier.
In an embodiment, the first message is used for requesting a cell to exit from service, the second message is used for indicating a cell to block, the information of the network mode of the cell includes a network mode identifier to be blocked, the second message carries an NCGI of the cell and the network mode identifier to be blocked, and the network mode identifier to be blocked includes at least one of NSA identifier and SA identifier.
In an embodiment, the first message is used for requesting a cell to exit from service, the second message is used for indicating a cell to be deactivated, the information of the network mode of the cell includes a deactivation network mode identifier, the second message carries an NCGI of the cell and the deactivation network mode identifier, and the deactivation network mode identifier includes at least one of an NSA identifier and an SA identifier.
As shown in fig. 4, the method for transmitting information provided in the embodiment of the present invention is applied to a DU, and includes:
in step 301, the DU sends a first message to the CU.
The first message is for requesting at least one of cell establishment, cell parameter update, and cell exit service.
When the first message is used for requesting cell establishment, the first message comprises an F1 establishment request; the first message is used for requesting cell parameter update, and the first message comprises a DU configuration update message; the first message is used for requesting the cell to exit the service, and the first message comprises a DU configuration update message.
Step 302, the DU receives a second message sent by the CU, where the second message carries information of a network mode of the cell.
Wherein the network mode includes at least one of NSA and SA.
When the first message is used for requesting the establishment of a cell, the second message comprises an F1 establishment request response;
the first message is used for requesting the updating of the cell parameters, and the second message comprises a DU configuration updating response;
the first message is for requesting that the cell be out of service and the second message includes at least one of a CU configuration update message and a de-activate cell message.
In an embodiment, when the first message is used for requesting cell establishment or cell parameter update, the information of the network mode of the cell includes a network mode identifier supported by the cell, the second message carries an NCGI of the cell and a supported network mode identifier, and the network mode identifier includes at least one of an NSA identifier and an SA identifier.
In an embodiment, the first message is used for requesting a cell to exit from service, the second message is used for indicating a cell to block, the information of the network mode of the cell includes a network mode identifier to be blocked, the second message carries an NCGI of the cell and the network mode identifier to be blocked, and the network mode identifier to be blocked includes at least one of NSA identifier and SA identifier.
In an embodiment, the first message is used for requesting a cell to exit from service, the second message is used for indicating a cell to be deactivated, the information of the network mode of the cell includes a deactivation network mode identifier, the second message carries an NCGI of the cell and the deactivation network mode identifier, and the deactivation network mode identifier includes at least one of an NSA identifier and an SA identifier.
Step 303, the DU informs the terminal corresponding to the cell of the information of the network mode of the cell.
In an embodiment, the DU informs the terminal corresponding to the cell of the information of the network mode of the cell by at least one of the following modes:
broadcasting, closing cell signals and presetting with a terminal.
In an embodiment, the information of the network mode of the cell includes a network mode identifier supported by the cell, and the step 303 includes:
when the cell supports SA, the DU transmits a broadcast message carrying an identification supporting SA;
when the cell supports NSA, the DU transmits a broadcast message carrying NSA-supporting identification or does not transmit the broadcast message;
when the cell supports NSA and SA at the same time, the DU transmits a broadcast message carrying NSA supporting identification and AS supporting identification;
when the cell does not support NSA and SA, the DU turns off the cell signal.
When the cell supports NSA, the DU does not send a broadcast message, that is, a mode pre-agreed with the terminal, that is, if the cell is not indicated to support SA, only NSA is supported by default.
In an embodiment, when the first message is used to request the cell to exit from service and the second message is used to indicate the cell to block, the step 303 includes:
When the cell to be blocked network mode is SA, the DU sends a broadcast message carrying an SA cell forbidden access instruction;
when the cell to-be-blocked network mode is NSA, the DU transmits a broadcast message carrying an NSA cell access prohibition instruction;
and when the cell to be blocked network mode is NSA and SA, the DU transmits a broadcast message carrying NSA cell and SA cell forbidden access instructions.
In an embodiment, the first message is used to request the cell to exit from service, and the second message is used to instruct the cell to deactivate, where the step 303 includes:
the network mode of the cell is SA, and when the second message indicates that the SA network mode is deactivated, the DU turns off the cell signal;
the network mode of the cell is NSA, and the DU turns off the cell signal when the second message indicates that the NSA network mode is deactivated;
the network modes of the cell are NSA and SA, and the DU turns off the cell signal when the NSA network mode and the SA network mode are deactivated by the second message;
the network modes of the cell are NSA and SA, and when the second message indicates to deactivate the NSA network mode, the DU sends a broadcast message carrying that the NSA network mode is not available;
The network modes of the cell are NSA and SA, and the DU sends a broadcast message carrying that the SA network mode is not available when the SA network mode is deactivated by the second message.
Through the embodiment of the invention, the DU can acquire the information of the network mode of the cell, so as to inform the terminal, and the condition that the connection establishment request initiated by the terminal supporting SA under the coexistence networking of NSA and SA cells is refused by the base station or the core network, so that the call failure is caused can be effectively avoided, the call completing rate is improved, and the user experience effect is improved.
The following is a description of some examples of applications.
Application example 1
As shown in fig. 5, the first message is illustrated as an example for requesting cell establishment.
In step 401, the du sends an F1 setup request message to the CU requesting cell setup.
Cells on DUs and CUs may be NSA-supported, SA-supported, and NSA and SA 3 network modes supported at the same time.
When a cell is newly established, the DU sends an F1 establishment request to the CU.
F1 establishes an NSA or SA group network identification information requesting to carry the NCGI cell identity and support of the cell, support of a PLMN (Public Land Mobile Network ) list, support of a network slice list, etc.
The DU and CU can interact F1 establishment request signaling flow through an F1 interface.
The F1setup request includes: f1SETUP REQUEST (F1 SETUP REQUEST).
In step 402, the cu sends an ENDC X2setup request to the eNB.
The CU and the eNB can perform cell establishment procedure interaction through an X2 interface.
When the F1 establishment request carries each cell supporting NSA, the CU sends an ENDC X2 establishment request to the eNB.
The ENDC X2setup request carries the respective logical cell supporting PLMN list.
The ENDC X2setup request signaling includes: an ENDC X2SETUP REQUEST message.
In step 403, the enb sends an ENDC X2setup response to the CU.
The eNB responding to the ENDC X2setup request response signaling includes: an ENDC X2SETUP RESPONSE, an EN-DC X2SETUP FAILURE message.
In step 404, the cu decides whether the cell supports NSA.
When the eNB responds to the EN-DC X2SETUP FAILUR message, the cell NSA fails to establish and does not support NSA.
The eNB responds to the ENDC X2SETUP RESPONSE message, and the cell NSA establishes a normal support NSA.
When the eNB and the CU have no X2 interface, the cell does not support NSA.
In step 405, the cu sends an NG establishment request to the AMF.
When the cell establishment request message carries each cell supporting SA, the CU sends an NG establishment request message to the AMF.
The NG establishment request message includes: NG SETUP REQUEST message.
In step 406, the AMF sends an NG establishment request response to the CU.
The NG establishment request signaling includes: NG SETUP RESPONSE NG SETUP FAILURE message.
In step 407, the cu decides whether the cell supports SA.
The AMF responds NG SETUP RESPONSE that the cell supports the SA with an intersection of the PLMN list and the network slice list and the AMF supports the PLMN list and the network slice list, otherwise the cell does not support the SA.
The cell does not support SA when AMF responds to NG SETUP FAILURE.
When CU and AMF NG fail, the cell does not support SA.
In step 408, the cu sends a cell setup request response to the DU.
When the CU judges that the cell supports NSA and SA, the cell establishment request response message carries the activated NCGI and supports NSA and SA identification at the same time.
When the CU judges that the cell supports NSA, the cell establishment request response message carries the activated NCGI and supports NSA identification at the same time.
When the CU judges that the cell supports SA, the cell establishment request response message carries the activated NCGI and simultaneously supports SA identification.
The CU responds to the DU to establish the request response signaling including: f1SETUP RESPONSE message.
In step 409, the du cell broadcasts notification NSA and/or SA information.
When the CU notifies the DU cell that the SA is supported, the DU cell broadcasts SIB1 (System Information Block, system information block 1) message notifying the terminal that the SA is supported.
When the CU informs the DU cell of supporting NSA, the DU cell broadcasts SIB1 information informing terminal carries supporting NSA identification, and the broadcasting SIB1 can not be sent.
When the CU informs the DU cell that supports NSA and SA simultaneously, the DU cell broadcasts SIB1 information to inform the terminal that supports NSA and SA.
The CU turns off the cell signal when it informs the DU cell that NSA and SA are not supported.
Application instance two
As shown in fig. 6, the first message is used to request the cell parameter update.
Step 501, the DU sends a DU configuration update message to the CU requesting cell parameter update.
Cells on DUs and CUs may be NSA-supported, SA-supported, and NSA and SA 3 network modes supported at the same time.
When the cell is newly built or the cell parameters are updated, the DU sends a DU configuration update message to the CU.
The DU configuration update message carries the NCGI cell identity of the cell and the supported NSA, or SA group network identity information, supports a PLMN list, supports a network slice list, etc.
The DU and the CU can interact with each other through a DU configuration update signaling flow through an F1 interface.
The DU configuration update signaling includes: GNB-DU CONFIGURATION UPDATE (DU configuration update).
In step 502, the cu sends an ENDC X2 update request to the eNB.
The CU and the eNB may interact with the update signaling procedure through the X2 interface.
When the DU configuration update message carries each cell supporting NSA, the CU sends an ENDC X2 update request to the eNB.
The ENDC X2 update request carries the list of individual cell supporting PLMNs.
The ENDC X2 update request signaling includes: EN-DC CONFIGURATION UPDATE message.
In step 503, the enb sends an ENDC X2 update response to the CU.
The eNB responding to the ENDC X2 update request response signaling includes: EN-DC CONFIGURATION UPDATE ACK, EN-DC CONFIGURATION UPDATE FAILURE message.
In step 504, the cu decides whether the cell supports NSA.
When the eNB responds to the EN-DC CONFIGURATION UPDATE FAILURE message, the cell NSA update failure does not support NSA.
When the eNB responds to the EN-DC CONFIGURATION UPDATE ACK message, the cell NSA updates the normal support NSA.
When the eNB and the CU have no X2 interface, the cell does not support NSA.
In step 505, the CU sends a NG update request to the AMF.
And when the update request message carries the SA supported by each cell, the CU sends the update request message to the AMF.
The update request message includes: RAN CONFIGURATION UPDATE message.
The AMF sends an update request response to the CU, step 506.
The update request signaling includes: RAN CONFIGURATION UPDATE ACK message.
In step 507, the cu decides whether the cell supports SA.
In response to RAN CONFIGURATION UPDATE ACK, the AMF supports the PLMN list and the network slice list and the AMF supports the PLMN list and the network slice list with an intersection, and the cell supports the SA, otherwise the cell does not support the SA.
When CU and AMF NG fail, the cell does not support SA.
In step 508, the cu sends a cell update request response to the DU.
When the CU judges that the cell supports NSA and SA, the cell update request response message carries the activated NCGI and supports NSA and SA identification at the same time.
When the CU judges that the cell supports NSA, the cell update request response message carries the activated NCGI and supports NSA identification at the same time.
When the CU judges that the cell supports SA, the cell update request response message carries the activated NCGI and simultaneously supports SA identification.
The CU response DU update request response signaling includes: GNB-CU CONFIGURATION UPDATE message.
In step 509, the du cell broadcasts notification NSA and/or SA information.
When the CU informs the DU cell of supporting SA, the DU cell broadcasts SIB1 information to inform the terminal of carrying the supporting SA identifier.
When the CU informs the DU cell of supporting NSA, the DU cell broadcasts SIB1 information informing terminal carries supporting NSA identification, and the broadcasting SIB1 can not be sent.
When the CU informs the DU cell that supports NSA and SA simultaneously, the DU cell broadcasts SIB1 information to inform the terminal that supports NSA and SA.
The CU turns off the cell signal when it informs the DU cell that NSA and SA are not supported.
Application example three
As shown in fig. 7, the first message is used to request a cell exit service (abbreviated as an out-of-service) for example.
In step 601, when the cell service-withdrawal operation is performed on the DU, the DU sends a DU configuration update message to the CU, indicating that the cell is withdrawn.
The sending of the DU configuration update message by the DU to the CU carries that the cell is taken off may be NSA cell, SA cell, or NSA and SA cell.
The DU sends a DU configuration update message to the CU carrying the NCGI identity, NSA and SA identity of the fallback cell.
The sending of the DU configuration update signaling by the DU to the CU includes: GNB-DU CONFIGURATION UPDATE message.
In step 602, the CU sends a CU configuration update message to the DU indicating a cell occlusion.
The indicated cell block may be an NSA cell, or may be a SA cell, or a cell of NSA and SA.
The CU sends a CU configuration update message to the DU carrying the NCGI identity, NSA and SA identity of the cell.
The CU sending CU configuration update signaling to the DU includes: GNB-CU CONFIGURATION UPDATE.
In step 603, the du cell broadcasts a notification terminal of blocking information, indicating that access to the terminal is prohibited.
When the CU informs the DU of the SA cell blocking, the DU broadcasts an SA cell indication, prohibiting access of new terminals.
When the CU informs the DU to block the NSA cell, the DU broadcasts an NSA cell indication, prohibiting new terminals from accessing.
When the CU informs the DU to block NSA and SA cells, the DU broadcasts SA and NSA cell indications, prohibiting new terminals from accessing.
The DU sends a CU configuration update confirm message to the CU, step 604.
The sending of the CU configuration update confirmation message by the DU to the CU includes: GNB-CU CONFIGURATION UPDATE ACKNOWLEDGE message.
In step 605, the cu is off-service from the cell migration on-line terminal.
And for the SA cell to be out of service, the online terminal is migrated through the switching/redirecting/releasing terminal.
And for NSA cell out-of-service, releasing the migration online terminal through the Pscell change/SN change/SN.
For the service withdrawal of SA and NSA cells, migrating on-line SA terminals in a terminal switching/redirecting/releasing mode; and releasing the migration on-line NSA terminal through the Pscell change/SN change/SN.
In step 606, the cu sends a cell deactivation notification message to the DU.
The CU sending cell deactivation notification procedure signaling to the DU includes: GNB-CU CONFIGURATION UPDATE, GNB-CU CONFIGURATION UPDATE ACKNOWLEDGE message.
The deactivation cell signaling carries the NCGI identity, NSA and SA identity of the cell.
In step 607, the DU informs the terminal.
The cell is in SA network mode, and for SA cell deactivation, the cell radio frequency signal is turned off.
The cell is in NSA network mode and the cell radio frequency signal is turned off for NSA cell deactivation.
The cells are SA and NSA network modes, and for SA cell deactivation, a notification is broadcast to the terminal indicating the cells that SA network mode is not available.
The cells are SA and NSA network modes, and for NSA cell deactivation, a broadcast notification terminal indicates that the cell NSA network mode is not available.
In this application example, the message broadcast to notify the terminal includes an SIB1 message.
As can be seen from the above application examples, in the procedures of establishing/updating/exiting service of the NR side cell, the CU decides the supporting conditions of SA and NSA, and notifies the DU cell of the supporting SA & NSA information, and the DU cell broadcasts the SA & NSA information to the terminal.
As shown in fig. 8, an embodiment of the present invention further provides an apparatus for information transmission, which is applied to a CU, and includes:
a first receiving module 701, configured to receive a first message sent by a DU; the first message is used for requesting at least one of cell establishment, cell parameter update and cell exit service;
a determining module 702, configured to determine a network mode of the cell; wherein the network mode includes at least one of NSA and SA;
a first sending module 703, configured to send a second message to the DU, where the second message carries information of a network mode of the cell.
As shown in fig. 9, an embodiment of the present invention further provides an apparatus for information transmission, which is applied to a DU, including:
a second sending module 801, configured to send a first message to a CU; the first message is used for requesting at least one of cell establishment, cell parameter update and cell exit service;
a second receiving module 802, configured to receive a second message sent by the CU, where the second message carries information of a network mode of a cell, and the network mode includes at least one of NSA and SA;
and the notifying module 803 is configured to notify the terminal corresponding to the cell of the information of the network mode of the cell.
As shown in fig. 10, an embodiment of the present invention further provides a CU, including: a memory 901, a processor 902 and a computer program 903 stored on the memory 901 and executable on the processor 902, the processor 902 implementing the method of information transmission when executing the program.
As shown in fig. 11, an embodiment of the present invention further provides a DU, including: a memory 1001, a processor 1002 and a computer program 1003 stored on the memory 1001 and executable on the processor 1002, the processor 1002 implementing the method of information transmission when executing the program.
The embodiment of the invention also provides a computer readable storage medium which stores computer executable instructions for executing the method for information transmission.
In the present embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, functional modules/units in the apparatus, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between the 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 cooperatively by several physical components. Some or all of the components may be implemented as software executed by a processor, such as a 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 on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both 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 known to those skilled 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. Furthermore, as is well known to those of ordinary skill in the art, 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.

Claims (19)

1. A method of information transmission, comprising:
the central unit CU receives a first message sent by the distributed unit DU; the first message is used for requesting at least one of cell establishment, cell parameter update and cell exit service;
the CU determines a network mode of the cell; wherein the network mode comprises at least one of a non-independent networking NSA and an independent networking SA;
and the CU sends a second message to the DU, wherein the second message carries the information of the network mode of the cell and indicates the DU to inform the terminal corresponding to the cell.
2. The method of claim 1, wherein the CU determines a network mode of a cell when the first message is for requesting cell establishment or cell parameter update, comprising:
and the CU respectively carries out NSA cell judgment and SA cell judgment, and determines the network mode of the cell.
3. The method of claim 2, wherein the CU makes NSA cell decisions and SA cell decisions, respectively, and determining the network mode of the cell comprises:
the CU carries out communication negotiation with an evolved node B eNB, carries out NSA cell judgment according to the response of the eNB, and determines whether the cell supports NSA or not;
And the CU carries out communication negotiation with an access and mobility management function (AMF), carries out SA cell judgment according to the response of the AMF, and determines whether the cell supports SA.
4. A method according to claim 2 or 3, wherein,
the information of the network mode of the cell comprises a network mode identifier supported by the cell, the second message carries a global cell identification code NCGI of the cell and the supported network mode identifier, and the network mode identifier comprises at least one of NSA identifier and SA identifier.
5. The method of claim 1, wherein the CU determines a network mode of a cell when the first message is for requesting the cell to exit service, comprising:
the CU determines a network mode of the cell according to the first message.
6. The method of claim 5, wherein,
the second message is used for indicating that a cell is blocked, the information of the network mode of the cell comprises a network mode identifier to be blocked, the second message carries NCGI of the cell and the network mode identifier to be blocked, and the network mode identifier to be blocked comprises at least one of NSA identifier and SA identifier.
7. The method of claim 5, wherein,
The second message is used for indicating that the cell is deactivated, the information of the network mode of the cell comprises a deactivation network mode identifier, the second message carries an NCGI of the cell and the deactivation network mode identifier, and the deactivation network mode identifier comprises at least one of an NSA identifier and an SA identifier.
8. The method of claim 1, wherein,
when the first message is used for requesting cell establishment, the first message comprises an F1 establishment request, and the second message comprises an F1 establishment request response;
when the first message is used for requesting cell parameter update, the first message comprises a DU configuration update message, and the second message comprises a DU configuration update response;
the first message is used for requesting the cell to exit the service, the first message comprises a DU configuration update message, and the second message comprises at least one of a CU configuration update message and a cell deactivation message.
9. A method of information transmission, comprising:
the DU sends a first message to the CU; the first message is used for requesting at least one of cell establishment, cell parameter update and cell exit service;
the DU receives a second message sent by the CU, wherein the second message carries information of a network mode of a cell, and the network mode comprises at least one of NSA and SA;
And the DU informs the terminal corresponding to the cell of the information of the network mode of the cell.
10. The method of claim 9, wherein the DU informs the terminals corresponding to the cell of the network mode information of the cell by at least one of:
broadcasting, closing cell signals and presetting with a terminal.
11. The method according to claim 9 or 10, wherein the information of the network mode of the cell includes a network mode identifier supported by the cell, the DU informs a terminal corresponding to the cell of the information of the network mode of the cell when the first message is used for requesting cell establishment or cell parameter update, and the method includes:
when the cell supports SA, the DU transmits a broadcast message carrying an identification supporting SA;
when the cell supports NSA, the DU transmits a broadcast message carrying NSA-supporting identification or does not transmit the broadcast message;
when the cell supports NSA and SA at the same time, the DU transmits a broadcast message carrying NSA supporting identification and AS supporting identification;
when the cell does not support NSA and SA, the DU turns off the cell signal.
12. The method according to claim 9 or 10, wherein the first message is used for requesting a cell to exit from service, the second message is used for indicating that a cell is blocked, and the DU informs a terminal corresponding to the cell of information of a network mode of the cell, including:
When the cell to be blocked network mode is SA, the DU sends a broadcast message carrying an SA cell forbidden access instruction;
when the cell to-be-blocked network mode is NSA, the DU transmits a broadcast message carrying an NSA cell access prohibition instruction;
and when the cell to be blocked network mode is NSA and SA, the DU transmits a broadcast message carrying NSA cell and SA cell forbidden access instructions.
13. The method according to claim 9 or 10, wherein the first message is used for requesting a cell to exit from service, the second message is used for indicating that a cell is deactivated, the DU informs a terminal corresponding to the cell of information of a network mode of the cell, and the method comprises:
the network mode of the cell is SA, and when the second message indicates that the SA network mode is deactivated, the DU turns off the cell signal;
the network mode of the cell is NSA, and the DU turns off the cell signal when the second message indicates that the NSA network mode is deactivated;
the network modes of the cell are NSA and SA, and the DU turns off the cell signal when the NSA network mode and the SA network mode are deactivated by the second message;
the network modes of the cell are NSA and SA, and when the second message indicates to deactivate the NSA network mode, the DU sends a broadcast message carrying that the NSA network mode is not available;
The network modes of the cell are NSA and SA, and the DU sends a broadcast message carrying that the SA network mode is not available when the SA network mode is deactivated by the second message.
14. The method of claim 9, wherein,
when the first message is used for requesting cell establishment, the first message comprises an F1 establishment request, and the second message comprises an F1 establishment request response;
when the first message is used for requesting cell parameter update, the first message comprises a DU configuration update message, and the second message comprises a DU configuration update response;
the first message is used for requesting the cell to exit the service, the first message comprises a DU configuration update message, and the second message comprises at least one of a CU configuration update message and a cell deactivation message.
15. An apparatus for information transmission, comprising:
a first receiving module, configured to receive a first message sent by a DU; the first message is used for requesting at least one of cell establishment, cell parameter update and cell exit service;
a determining module, configured to determine a network mode of the cell; wherein the network mode includes at least one of NSA and SA;
and the first sending module is used for sending a second message to the DU, wherein the second message carries the information of the network mode of the cell, and the information of the network mode of the cell is used for informing the terminal corresponding to the cell.
16. An apparatus for information transmission, comprising:
the second sending module is used for sending the first message to the CU; the first message is used for requesting at least one of cell establishment, cell parameter update and cell exit service;
a second receiving module, configured to receive a second message sent by the CU, where the second message carries information of a network mode of a cell, and the network mode includes at least one of NSA and SA;
and the informing module is used for informing the terminal corresponding to the cell of the information of the network mode of the cell.
17. A CU, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of information transmission according to any one of claims 1-8 when executing the program.
18. A DU comprising: memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of information transmission according to any one of claims 9-14 when executing the program.
19. A computer readable storage medium storing computer executable instructions for performing the method of information transmission of any one of claims 1 to 14.
CN201910424019.1A 2019-05-21 2019-05-21 Information transmission method, device, CU and DU Active CN111988831B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201910424019.1A CN111988831B (en) 2019-05-21 2019-05-21 Information transmission method, device, CU and DU
PCT/CN2020/079795 WO2020233209A1 (en) 2019-05-21 2020-03-17 Information transmission method and device, cu and du

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910424019.1A CN111988831B (en) 2019-05-21 2019-05-21 Information transmission method, device, CU and DU

Publications (2)

Publication Number Publication Date
CN111988831A CN111988831A (en) 2020-11-24
CN111988831B true CN111988831B (en) 2023-10-13

Family

ID=73437152

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910424019.1A Active CN111988831B (en) 2019-05-21 2019-05-21 Information transmission method, device, CU and DU

Country Status (2)

Country Link
CN (1) CN111988831B (en)
WO (1) WO2020233209A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112654056B (en) * 2020-12-07 2024-01-23 京信网络系统股份有限公司 Method, distribution unit, concentration unit and medium for managing shared cell
CN115334610A (en) * 2021-05-11 2022-11-11 中兴通讯股份有限公司 Network connection exception handling method, electronic device and storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108632923A (en) * 2017-03-24 2018-10-09 中国移动通信有限公司研究院 Idle state mutual operation method, device, terminal and network side equipment
CN108668381A (en) * 2017-09-23 2018-10-16 华为技术有限公司 Communication means and device
CN109600837A (en) * 2017-09-30 2019-04-09 中兴通讯股份有限公司 The generation method and device of system information

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108632880B (en) * 2017-03-16 2021-11-02 中国移动通信有限公司研究院 Networking working mode selection method, device and terminal
CN108696881B (en) * 2017-03-16 2021-06-29 中国移动通信有限公司研究院 Connection management method, first network equipment, terminal equipment and system
US10880798B2 (en) * 2017-08-28 2020-12-29 Qualcomm Incorporated Techniques for mode selection and cell selection/reselection
EP3484057B1 (en) * 2017-11-09 2021-01-06 Comcast Cable Communications, LLC Csi transmission with multiple bandwidth parts
CN109219157B (en) * 2018-10-30 2020-12-08 中国联合网络通信集团有限公司 Network mode configuration method and device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108632923A (en) * 2017-03-24 2018-10-09 中国移动通信有限公司研究院 Idle state mutual operation method, device, terminal and network side equipment
CN108668381A (en) * 2017-09-23 2018-10-16 华为技术有限公司 Communication means and device
CN109600837A (en) * 2017-09-30 2019-04-09 中兴通讯股份有限公司 The generation method and device of system information

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
R2-1809682 "NSA/SA NR cell indication in NR CGI reporting";Ericsson;《3GPP tsg_ran\wg2_rl2》;20180622;全文 *
R3-171833 "F1 interface: Work Plan on F1";NTT DOCOMO等;《3GPP tsg_ran\WG3_Iu》;20170507;全文 *
R3-182116 "(TP for NR BL CR for TS 38.473): on Cell Barred Info exchange over F1 interface";Huawei;《3GPP tsg_ran\WG3_Iu》;20180406;全文 *
R3-184661 "Discussion on PLMN and TAC transmission over F1";ZTE Corporation;《3GPP tsg_ran\wg3_iu》;20180810;全文 *
R3-190781 "Regarding support of UE Trace Activation/Deactivation";Ericsson;《3GPP tsg_ran\wg3_iu》;20190216;全文 *

Also Published As

Publication number Publication date
WO2020233209A1 (en) 2020-11-26
WO2020233209A9 (en) 2021-01-07
CN111988831A (en) 2020-11-24

Similar Documents

Publication Publication Date Title
CN107820291B (en) Network slice control method and related equipment
CN108353351B (en) Method for selecting service network, network equipment and management equipment
CN104186012B (en) Method and apparatus for selective access control with service continuity guarantees
CN109548037B (en) Control method, distributed unit, centralized unit and storage medium
CN102870470B (en) Re-orientation processes method, equipment and system
CN113055972B (en) Session processing method in wireless communication and terminal equipment
US20220030489A1 (en) Communications device, infrastructure equipment and methods
EP3739959A1 (en) Method for updating pdu session and network side device
KR20160020545A (en) Method, apparatus, and system for selecting mobility management entity
EP3297333A1 (en) Access method and corresponding access node, terminal and communication network
CN109640275B (en) Cell reselection method and device and broadband cluster system
CN114667765A (en) Method and apparatus for selecting network slice in wireless communication system
CN111988831B (en) Information transmission method, device, CU and DU
CN109936861B (en) Communication method, access network equipment, terminal equipment and core network equipment
CN114902742A (en) Roaming method, device and system
US20140242996A1 (en) Radio control apparatus, connection destination switching method, and system
CN101998330B (en) Switching method, device and system
JP2016103778A (en) Communication system, communication method, and connection processing device
WO2022001483A1 (en) Information sending method, nr cell access method, access network device, mobile terminal, and storage medium
CN112492694B (en) Slice management method, management unit, terminal equipment and medium of double-card terminal
CN115334610A (en) Network connection exception handling method, electronic device and storage medium
EP4120714A1 (en) Shared cell processing method and apparatus, electronic device, and readable medium
WO2017108344A1 (en) Mobile communications
CN110278618B (en) Data processing method and system
CN109699049B (en) Method and device for determining user plane protocol stack type

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant