CN112672373B - Optimization method, system and medium for slave node cell configuration in NR-DC - Google Patents
Optimization method, system and medium for slave node cell configuration in NR-DC Download PDFInfo
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- CN112672373B CN112672373B CN202011639489.9A CN202011639489A CN112672373B CN 112672373 B CN112672373 B CN 112672373B CN 202011639489 A CN202011639489 A CN 202011639489A CN 112672373 B CN112672373 B CN 112672373B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention provides an optimization method, a system and a medium for slave node cell configuration in NR-DC, comprising the following steps: step 1: checking the slave node cell configuration in the radio resource control reconfiguration message through the terminal and optimizing the scene which does not accord with the preset; step 2: the terminal executes the configuration of the slave node cell, optimizes the scene of newly adding the slave node cell or switching the slave node main cell, executes the downlink synchronization and random access of the slave node cell, and starts a timer; step 3: if the timer is overtime, a slave node cell error indication message is sent; if the configuration is successful, the base station slave node reconfiguration completion message is sent, the terminal does not send the reconfiguration completion message before random access after optimization, and the whole process only sends one radio resource control message as a response of reconfiguration information. The invention optimizes the air interface message, and the terminal can clearly indicate the SCG configuration result only by sending one air interface message.
Description
Technical Field
The invention relates to the technical field of NR-DC (network-to-DC), in particular to an optimization method, a system and a medium for slave node cell configuration in NR-DC.
Background
In NR-DC, the MN can send an RRC reconfiguration message on SRB1 informing the UE to add, delete, or modify SCG configurations. The UE needs to notify the MN after completing the configuration, and the MN notifies the SN again. Compared with the flow description in the prior art, a more efficient interaction flow is provided for the scene.
NR: 5 th generation mobile communication technology; NR-DC: an NR double connection technique, both of which use an NR technique; SRB: signaling radio bearers; DRB: a traffic radio bearer; RRC reconfiguration: an RRC reconfiguration message; UE: a terminal; MN: a base station master node; SN: a base station slave node; MCG: a primary node cell; SCG: a slave node cell; AS: an access layer; PSCELL: the slave node master cell.
Patent document CN109983833a (application number cn201880004499. X) discloses a method of supporting Dual Connectivity (DC) configuration after fallback in a 4G/5G network. The UE is configured with multiple radio access technology (Radio Access Technology, RAT) dual connectivity (MR-DC) and connected to Long Term Evolution (LTE) in both a primary cell group (MCG) and a Secondary Cell Group (SCG) or LTE/NR RATs in a New Radio (NR) serving cell. The UE must fall back to the legacy 2G/3G RAT and be forced to release the DC configuration. The UE records the serving cell information before the fallback procedure and transmits DC configuration assistance information to the network after the fallback. The assistance information contains stored serving cell information and optionally additional measurements for candidate SCG cells. The assistance information allows the network to resume high speed data transmission shortly after the backoff procedure.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an optimization method, a system and a medium for slave node cell configuration in NR-DC.
The optimization method for the slave node cell configuration in the NR-DC provided by the invention comprises the following steps:
step 1: the configuration of the slave node cell in the radio resource control reconfiguration message is checked through the terminal, and the optimization is carried out on the situation that the configuration of the slave node cell does not accord with the preset scene;
step 2: the terminal executes the configuration of the slave node cell, optimizes the scene of newly adding the slave node cell or switching the master cell of the slave node, executes the downlink synchronization and random access of the slave node cell according to the configuration of the slave node cell, and starts a timer;
step 3: if the timer is overtime, a reconfiguration completion message of the code stream carrying the slave node cell error indication message is sent; if the configuration is successful, the message carrying the reconfiguration completion of the base station slave node is sent, the base station master node forwards the message to the base station slave node, the terminal does not send the reconfiguration completion message before random access after optimization, and the whole process only sends one radio resource control message as a response of reconfiguration information.
Preferably, the base station master node analyzes the slave node cell response cell in the radio resource control reconfiguration complete message, and if the slave node cell error indication message is the slave node cell error indication message, the base station slave node is released; and if the message is the radio resource control reconfiguration complete message, forwarding the message to the base station slave node.
Preferably, the terminal receives the radio resource control reconfiguration message on the signaling radio bearer, adds, deletes or modifies the configuration of the slave node cell, when the terminal finds that the configuration of the slave node cell cannot be used, the terminal sends a radio resource control reconfiguration completion message on the master node cell, carries the slave node cell error indication message coding stream in the slave node cell response cell of the message, and after receiving the slave node cell error indication message, the base station master node releases the slave node cell and ends the flow.
Preferably, under NR-DC, the terminal receives a radio resource control reconfiguration message on a signaling radio bearer, where the configuration of the slave node cell includes the configuration of the master cell of the slave node, and if the timer expires during reconfiguration, it indicates that the downlink synchronization of the slave node cell fails or the random access fails, and the terminal sends a radio resource control reconfiguration complete message on the master node cell, and carries a slave node cell error indication message encoding stream in a slave node cell response cell of the message.
The optimization system for the slave node cell configuration in the NR-DC provided by the invention comprises the following components:
module M1: the configuration of the slave node cell in the radio resource control reconfiguration message is checked through the terminal, and the optimization is carried out on the situation that the configuration of the slave node cell does not accord with the preset scene;
module M2: the terminal executes the configuration of the slave node cell, optimizes the scene of newly adding the slave node cell or switching the master cell of the slave node, executes the downlink synchronization and random access of the slave node cell according to the configuration of the slave node cell, and starts a timer;
module M3: if the timer is overtime, a reconfiguration completion message of the code stream carrying the slave node cell error indication message is sent; if the configuration is successful, the message carrying the reconfiguration completion of the base station slave node is sent, the base station master node forwards the message to the base station slave node, the terminal does not send the reconfiguration completion message before random access after optimization, and the whole process only sends one radio resource control message as a response of reconfiguration information.
Preferably, the base station master node analyzes the slave node cell response cell in the radio resource control reconfiguration complete message, and if the slave node cell error indication message is the slave node cell error indication message, the base station slave node is released; and if the message is the radio resource control reconfiguration complete message, forwarding the message to the base station slave node.
Preferably, the terminal receives the radio resource control reconfiguration message on the signaling radio bearer, adds, deletes or modifies the configuration of the slave node cell, when the terminal finds that the configuration of the slave node cell cannot be used, the terminal sends a radio resource control reconfiguration completion message on the master node cell, carries the slave node cell error indication message coding stream in the slave node cell response cell of the message, and after receiving the slave node cell error indication message, the base station master node releases the slave node cell and ends the flow.
Preferably, under NR-DC, the terminal receives a radio resource control reconfiguration message on a signaling radio bearer, where the configuration of the slave node cell includes the configuration of the master cell of the slave node, and if the timer expires during reconfiguration, it indicates that the downlink synchronization of the slave node cell fails or the random access fails, and the terminal sends a radio resource control reconfiguration complete message on the master node cell, and carries a slave node cell error indication message encoding stream in a slave node cell response cell of the message.
According to the present invention there is provided a computer readable storage medium storing a computer program which when executed by a processor performs the steps of the method described above.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention reduces the influence of SCG configuration on MCG, if SCG configuration is unsuccessful, MCG does not need to be rebuilt;
2. the invention optimizes the air interface message, and the terminal can clearly indicate the SCG configuration result only by sending one air interface message;
3. the invention simplifies the exception handling of the SN, under the prior art, the SN receives the reconfiguration completion message and cannot indicate the successful configuration of the SCG, and under the new scheme, the SN receives the reconfiguration completion message and can eliminate the possibility of failure of the configuration of the SCG.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a diagram of network nodes;
FIG. 2 is a flow chart of a new solution newly added SCG configuration failure;
FIG. 3 is a flow chart of the new proposal for adding SCG successfully;
FIG. 4 is a flow chart of the new scenario, newly added SCG, T304 timeout.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Examples:
the optimization processing method for SCG configuration in NR-DC provided by the invention comprises the following steps:
step 1: the UE checks the SCG configuration in the RRC reconfiguration message, optimizes the scene of unreasonable SCG configuration, does not initiate a reconstruction flow, and sends a reconfiguration completion message, wherein the SCG response cell carries the coded stream of the SCG error indication message. After receiving the SCG error indication message, the MN releases the SCG, the SCG configuration fails, and the flow is ended;
step 2: the UE executes SCG configuration, optimizes the scene of newly added SCG or switching PSCELL, executes SCG downlink synchronization and random access according to the SCG configuration, and starts a timer T304. If successful, the reconfiguration complete message is sent in the MCG, and the SN reconfiguration complete message is carried in the SCG response cell. The MN forwards the SN reconfiguration complete message to the SN. The result of the optimization is that the UE does not send a reconfiguration complete message before random access, and the whole process only sends one RRC message as a response of reconfiguration information;
step 3: and when T304 is overtime, the SCG downlink synchronous fails or random access fails, the UE sends a reconfiguration completion message in the MCG, and the SCG response cell carries the coded stream of the SCG error indication message.
Preferably, the MN needs to parse the SCG response cell in the RRC reconfiguration complete message and process it according to the new scheme. And if the message is an SCG error indication message, releasing the SN. And if the message is the RRC reconfiguration complete message, forwarding the message to the SN.
Preferably, the UE receives the RRC reconfiguration message on SRB1, adds, deletes, or modifies the SCG configuration, and when the UE finds that the SCG configuration cannot be used, the UE does not need to reconstruct, but sends an RRC reconfiguration complete message on the MCG, and carries the SCG error indication message encoding stream in an SCG response cell of the message.
Preferably, under NR-DC, the UE receives the RRC reconfiguration message on SRB1, adding, deleting, or modifying SCG configuration. After the SCG configuration is successful, the UE sends an RRC reconfiguration completion message on the MCG, and carries an SN RRC reconfiguration completion message coding stream in an SCG response cell of the message.
Preferably, under NR-DC, the UE receives an RRC reconfiguration message on SRB1, where the SCG configuration includes PSCELL configuration, and when in reconfiguration, if T304 is timed out, the UE sends an RRC reconfiguration complete message on MCG, and carries an SCG error indication message encoding stream in an SCG response cell of the message.
Referring to fig. 2, a flow chart of SCG configuration failure is newly added for a new proposal, which comprises the following steps:
1, MN initiates a request for adding SN to SN;
2, the SN replies to the MN, agrees to join the MN;
3, the MN sends RRC reconfiguration information to the UE, wherein the RRC reconfiguration information comprises SCG configuration;
4, the UE replies successful reconfiguration of the MN, wherein the successful reconfiguration comprises SCG failure indication;
and 5, the MN sends an SN release request to the SN.
The prior art is to send an RRC reestablishment request, and MCG communication is interrupted. And after optimization, sending an SCG failure indication without influencing MCG communication.
As shown in fig. 3, a new SCG success flow chart for the new proposal includes the following steps:
1, MN initiates a request for adding SN to SN;
2, the SN replies to the MN, agrees to join the MN;
3, the MN sends RRC reconfiguration information to the UE, wherein the RRC reconfiguration information comprises SCG configuration;
4, the UE replies success of MN reconfiguration, wherein the success of the MN reconfiguration comprises an SCG reconfiguration success indication;
5, the MN sends an SN addition success indication to the SN;
4a, the UE replies successful reconfiguration of the MN, wherein the successful reconfiguration of the SCG is included;
5a, the mn sends an SN addition success indication to the SN.
Referring to fig. 4, a flow chart of a new SCG and T304 timeout is added for the new scheme, which includes the following steps:
1, MN initiates a request for adding SN to SN;
2, the SN replies to the MN, agrees to join the MN;
3, the MN sends RRC reconfiguration information to the UE, wherein the RRC reconfiguration information comprises SCG configuration;
4, the UE replies success of MN reconfiguration, wherein the success of the MN reconfiguration comprises an SCG reconfiguration success indication;
5, the MN sends an SN addition success indication to the SN;
6, the UE sends an SCG failure indication to the MN;
4a, the UE replies successful reconfiguration of the MN, wherein the successful reconfiguration of the MN comprises an SCG reconfiguration failure indication;
5a, the mn sends an SN release request to the SN.
The prior art comprises the following steps: the UE needs to send an RRC reconfiguration complete message and an SCG error indication message. After the optimization, only an RRC reconfiguration complete message needs to be sent.
The purpose of the invention is that:
1) The UE may continue to use the MCG for communication when the SCG configuration is not reasonable.
2) In the SCG configuration process, the UE informs the MN through an RRC message no matter success or failure. Simplifying the communication flow between the UE and the MN.
3) The SN receives an RRC message when the SCG configuration procedure is successfully completed. And in the SCG configuration process, the RRC message is not received. If the configuration fails, the MN informs the SN of the release. Simplifying the SN processing flow and preventing the SN resource waste caused by the abnormality of the UE.
Those skilled in the art will appreciate that the systems, apparatus, and their respective modules provided herein may be implemented entirely by logic programming of method steps such that the systems, apparatus, and their respective modules are implemented as logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc., in addition to the systems, apparatus, and their respective modules being implemented as pure computer readable program code. Therefore, the system, the apparatus, and the respective modules thereof provided by the present invention may be regarded as one hardware component, and the modules included therein for implementing various programs may also be regarded as structures within the hardware component; modules for implementing various functions may also be regarded as being either software programs for implementing the methods or structures within hardware components.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (3)
1. A method for optimizing slave node cell configuration in NR-DC, comprising:
step 1: the configuration of the slave node cell in the radio resource control reconfiguration message is checked through the terminal, and the optimization is carried out on the situation that the configuration of the slave node cell does not accord with the preset scene;
step 2: the terminal executes the configuration of the slave node cell, optimizes the scene of newly adding the slave node cell or switching the master cell of the slave node, executes the downlink synchronization and random access of the slave node cell according to the configuration of the slave node cell, and starts a timer;
step 3: if the timer is overtime, a reconfiguration completion message of the code stream carrying the slave node cell error indication message is sent; if the configuration is successful, a message carrying the reconfiguration completion of the base station slave node is sent, the base station master node forwards the message to the base station slave node, the terminal does not send the reconfiguration completion message before random access after optimization, and the whole process only sends one radio resource control message as a response of reconfiguration information;
the base station master node analyzes the slave node cell response information element in the wireless resource control reconfiguration completion information, and if the slave node cell response information element is a slave node cell error indication information, the base station slave node is released; if the message is the radio resource control reconfiguration complete message, forwarding the message to the base station slave node;
the terminal receives the radio resource control reconfiguration message on the signaling radio bearer, adds, deletes or modifies the configuration of the slave node cell, when the terminal finds that the configuration of the slave node cell cannot be used, the terminal sends the radio resource control reconfiguration completion message on the master node cell, carries the slave node cell error indication message coding flow in the slave node cell response cell of the message, and after receiving the slave node cell error indication message, the base station master node releases the slave node cell and ends the flow;
under NR-DC, the terminal receives a radio resource control reconfiguration message on a signaling radio bearer, wherein the configuration of a slave node cell comprises the configuration of a slave node master cell, if a timer is overtime during reconfiguration, the downlink synchronization failure or the random access failure of the slave node cell is indicated, the terminal sends a radio resource control reconfiguration completion message on the master node cell, and the slave node cell response cell of the message carries a slave node cell error indication message coding stream;
the newly added SCG configuration failure flow comprises the following steps:
1, MN initiates a request for adding SN to SN;
2, the SN replies to the MN, agrees to join the MN;
3, the MN sends RRC reconfiguration information to the UE, wherein the RRC reconfiguration information comprises SCG configuration;
4, the UE replies successful reconfiguration of the MN, wherein the successful reconfiguration comprises SCG failure indication;
5, the MN sends an SN release request to the SN;
the successful flow of newly added SCG comprises the following steps:
1, MN initiates a request for adding SN to SN;
2, the SN replies to the MN, agrees to join the MN;
3, the MN sends RRC reconfiguration information to the UE, wherein the RRC reconfiguration information comprises SCG configuration;
the SCG random access is successful;
4a, the UE replies successful reconfiguration of the MN, wherein the successful reconfiguration of the SCG is included;
5a, the MN sends an SN addition success indication to the SN;
the newly added SCG, T304 timeout flow includes the following steps:
1, MN initiates a request for adding SN to SN;
2, the SN replies to the MN, agrees to join the MN;
3, the MN sends RRC reconfiguration information to the UE, wherein the RRC reconfiguration information comprises SCG configuration;
after T304 is started and T304 is overtime, the SCG downlink synchronization failure or random access failure is indicated;
4a, the UE replies successful reconfiguration of the MN, wherein the successful reconfiguration of the MN comprises an SCG reconfiguration failure indication;
5a, the MN sends an SN release request to the SN;
NR: 5 th generation mobile communication technology; RRC reconfiguration: an RRC reconfiguration message; UE: a terminal; MN: a base station master node; SN: a base station slave node; MCG: a primary node cell; SCG: a slave node cell; AS: an access layer; PSCELL: the slave node master cell.
2. An optimization system configured from a node cell in NR-DC, comprising:
module M1: the configuration of the slave node cell in the radio resource control reconfiguration message is checked through the terminal, and the optimization is carried out on the situation that the configuration of the slave node cell does not accord with the preset scene;
module M2: the terminal executes the configuration of the slave node cell, optimizes the scene of newly adding the slave node cell or switching the master cell of the slave node, executes the downlink synchronization and random access of the slave node cell according to the configuration of the slave node cell, and starts a timer;
module M3: if the timer is overtime, a reconfiguration completion message of the code stream carrying the slave node cell error indication message is sent; if the configuration is successful, a message carrying the reconfiguration completion of the base station slave node is sent, the base station master node forwards the message to the base station slave node, the terminal does not send the reconfiguration completion message before random access after optimization, and the whole process only sends one radio resource control message as a response of reconfiguration information;
the base station master node analyzes the slave node cell response information element in the wireless resource control reconfiguration completion information, and if the slave node cell response information element is a slave node cell error indication information, the base station slave node is released; if the message is the radio resource control reconfiguration complete message, forwarding the message to the base station slave node;
the terminal receives the radio resource control reconfiguration message on the signaling radio bearer, adds, deletes or modifies the configuration of the slave node cell, when the terminal finds that the configuration of the slave node cell cannot be used, the terminal sends the radio resource control reconfiguration completion message on the master node cell, carries the slave node cell error indication message coding flow in the slave node cell response cell of the message, and after receiving the slave node cell error indication message, the base station master node releases the slave node cell and ends the flow;
under NR-DC, the terminal receives a radio resource control reconfiguration message on a signaling radio bearer, wherein the configuration of a slave node cell comprises the configuration of a slave node master cell, if a timer is overtime during reconfiguration, the downlink synchronization failure or the random access failure of the slave node cell is indicated, the terminal sends a radio resource control reconfiguration completion message on the master node cell, and the slave node cell response cell of the message carries a slave node cell error indication message coding stream;
the newly added SCG configuration failure flow comprises the following steps:
1, MN initiates a request for adding SN to SN;
2, the SN replies to the MN, agrees to join the MN;
3, the MN sends RRC reconfiguration information to the UE, wherein the RRC reconfiguration information comprises SCG configuration;
4, the UE replies successful reconfiguration of the MN, wherein the successful reconfiguration comprises SCG failure indication;
5, the MN sends an SN release request to the SN;
the successful flow of newly added SCG comprises the following steps:
1, MN initiates a request for adding SN to SN;
2, the SN replies to the MN, agrees to join the MN;
3, the MN sends RRC reconfiguration information to the UE, wherein the RRC reconfiguration information comprises SCG configuration;
the SCG random access is successful;
4a, the UE replies successful reconfiguration of the MN, wherein the successful reconfiguration of the SCG is included;
5a, the MN sends an SN addition success indication to the SN;
the newly added SCG, T304 timeout flow includes the following steps:
1, MN initiates a request for adding SN to SN;
2, the SN replies to the MN, agrees to join the MN;
3, the MN sends RRC reconfiguration information to the UE, wherein the RRC reconfiguration information comprises SCG configuration;
after T304 is started and T304 is overtime, the SCG downlink synchronization failure or random access failure is indicated;
4a, the UE replies successful reconfiguration of the MN, wherein the successful reconfiguration of the MN comprises an SCG reconfiguration failure indication;
5a, the MN sends an SN release request to the SN;
NR: 5 th generation mobile communication technology; RRC reconfiguration: an RRC reconfiguration message; UE: a terminal; MN: a base station master node; SN: a base station slave node; MCG: a primary node cell; SCG: a slave node cell; AS: an access layer; PSCELL: the slave node master cell.
3. A computer readable storage medium storing a computer program, which when executed by a processor implements the steps of the method of claim 1.
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