CN111417154A - Method for keeping terminal service continuity in multiple connections and network unit - Google Patents
Method for keeping terminal service continuity in multiple connections and network unit Download PDFInfo
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- CN111417154A CN111417154A CN201910010575.4A CN201910010575A CN111417154A CN 111417154 A CN111417154 A CN 111417154A CN 201910010575 A CN201910010575 A CN 201910010575A CN 111417154 A CN111417154 A CN 111417154A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0027—Control or signalling for completing the hand-off for data sessions of end-to-end connection for a plurality of data sessions of end-to-end connections, e.g. multi-call or multi-bearer end-to-end data connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/25—Maintenance of established connections
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Abstract
The invention provides a method and a network unit for maintaining terminal service continuity in multi-connection, belonging to the technical field of wireless communication. The method for maintaining the service continuity of the terminal in the multi-connection comprises the following steps: the auxiliary node receives a main node wireless link failure message reported by the terminal; the auxiliary node sends the main node wireless link failure message to the main node; the auxiliary node receives a main node switching request sent by the main node; the auxiliary node sends a main node switching confirmation to the main node; and the auxiliary node receives the reconfiguration message sent by the main node, sends a first radio resource control reconfiguration message to the terminal and indicates the main node of the terminal to be switched into the auxiliary node. By the technical scheme of the invention, the problems of discontinuous service and interruption time delay in the prior art can be solved under the condition that the wireless link of the MN fails.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and a network unit for maintaining service continuity of a terminal in multiple connections.
Background
Multiple forms of dual connectivity are supported in a 5G system, i.e., two nodes serve a user together, such as EN-DC (L TE (L ong Term Evolution, long Term Evolution) eNB (Evolved nodeb) as the primary node, NR (new radio, new air interface) gNB (5G nodeb) as the secondary node connected to EPC (Evolved Packet Core, 4G Core network)), and NG EN-DC (e L TE eNB as the primary node, NR gbb as the secondary node connected to 5GC (5G Core network)), and NE-DC (NR gbb as the primary node, e L TE as the secondary node connected to 5GC) and NR-NR DC (both primary and secondary nodes are NR gbb connected to 5 GC).
In addition, future networks will also support multiple forms of multiple connections, i.e., multiple nodes serve one user, which may be of the same or cross-system. The main node of the service user adds a plurality of auxiliary nodes with the same system or different systems, and provides additional wireless resources for the user. It can be said that a double connection is a special form of multiple connections.
In the existing EN-DC technology, a processing mechanism after failure of MN (primary node) and SN (secondary node) is as follows:
if the MN has radio link failure, UE (terminal) initiates link reconstruction, and SN is released;
if the SN fails (including Radio link failure, SN change failure, SCG (secondary Cell Group) reconfiguration failure, SCG RRC (Radio Resource Control) integrity protection failure, etc.), the UE does not initiate a reestablishment, but reports SCG failure information to the MN, and carries the measurement result of the SN, and the MN determines whether to maintain or change the SN.
It can be known from the above that, when the MN fails to have a radio link, the UE is inevitably triggered to initiate link reestablishment and release the SN, regardless of whether the SN keeps good connection with the UE, which results in discontinuous UE service and interruption delay.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and a network unit for maintaining continuity of a terminal service in multi-connection, which can solve the problems of discontinuous service and interruption delay existing in the existing under the condition that an MN radio link fails.
To solve the above technical problem, embodiments of the present invention provide the following technical solutions:
in one aspect, an embodiment of the present invention provides a method for maintaining service continuity of a terminal in multiple connections, including:
the auxiliary node receives a main node wireless link failure message reported by the terminal;
the auxiliary node sends the main node wireless link failure message to the main node;
the auxiliary node receives a main node switching request sent by the main node;
the auxiliary node sends a main node switching confirmation to the main node;
and the auxiliary node receives the reconfiguration message sent by the main node, sends a first radio resource control reconfiguration message to the terminal and indicates the main node of the terminal to be switched into the auxiliary node.
Further, after the secondary node receives the rrc reconfiguration message sent by the primary node and sends the rrc reconfiguration message to the terminal, the method further includes:
and the auxiliary node and the terminal complete a random access process.
Further, after the secondary node and the terminal complete the random access procedure, the method further includes:
the auxiliary node sends an auxiliary node reconfiguration message to the main node and indicates that the main node is used as a new auxiliary node;
and the auxiliary node sends a second radio resource control reconfiguration message to the terminal to indicate that the auxiliary node of the terminal is switched to the main node.
Further, the terminal is configured with a separate signaling radio bearer, and the receiving, by the secondary node, the primary node radio link failure message reported by the terminal includes:
and the auxiliary node receives the main node radio link failure message reported by the terminal through an auxiliary node link of the separated signaling radio bearer.
Further, the terminal is configured with a separate signaling radio bearer, and the receiving, by the secondary node, the reconfiguration message sent by the primary node includes:
the auxiliary node receives the reconfiguration message sent by the main node through a separated signaling radio bearer;
the sending, by the secondary node, the first rrc reconfiguration message to the terminal includes:
and the auxiliary node sends the first radio resource control reconfiguration message to the terminal through a separated signaling radio bearer.
Further, the sending, by the secondary node, the second rrc reconfiguration message to the terminal includes:
and the auxiliary node sends the second radio resource control reconfiguration message to the terminal through a signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the receiving, by the secondary node, the primary node radio link failure message reported by the terminal includes:
and the auxiliary node receives the main node radio link failure message reported by the terminal through a signaling radio bearer 3.
Further, the terminal is configured with a signaling radio bearer 3, and the sending, by the secondary node, the primary node radio link failure message to the primary node includes:
and the secondary node sends the main node radio link failure message to the main node through an Xn and/or X2 interface.
Further, the terminal is configured with a signaling radio bearer 3, and the receiving, by the secondary node, the reconfiguration message sent by the primary node includes:
and the secondary node receives the reconfiguration message sent by the primary node through an Xn and/or X2 interface.
Further, the master node radio link failure message includes at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
The embodiment of the invention also provides a method for maintaining the service continuity of the terminal in the multi-connection, which comprises the following steps:
when detecting that the wireless link of the main node fails, the terminal sends a failure message of the wireless link of the main node to the auxiliary node;
and the terminal receives a first radio resource control reconfiguration message sent by the auxiliary node, wherein the first radio resource control reconfiguration message indicates that the main node of the terminal is switched to the auxiliary node.
Further, after the terminal receives the first rrc reconfiguration message sent by the secondary node, the method further includes:
and the terminal and the auxiliary node finish the random access process.
Further, after the terminal and the secondary node complete the random access procedure, the method further includes:
and the terminal receives a second radio resource control reconfiguration message sent by the auxiliary node and indicates the auxiliary node of the terminal to be switched into the main node.
Further, the terminal is configured with a separate signaling radio bearer, and the sending, by the terminal, the primary node radio link failure message to the secondary node includes:
and the terminal sends the main node radio link failure message to the auxiliary node through an auxiliary node link for separating signaling radio bearer.
Further, the configuring, by the terminal, of the separate signaling radio bearer, and the receiving, by the terminal, the first radio resource control reconfiguration message sent by the secondary node includes:
and the terminal receives the first radio resource control reconfiguration message sent by the auxiliary node through a separated signaling radio bearer.
Further, the receiving, by the terminal, the second rrc reconfiguration message sent by the secondary node includes:
and the terminal receives the second radio resource control reconfiguration message sent by the auxiliary node through a signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the sending, by the terminal, the primary node radio link failure message to the secondary node includes:
and the terminal sends the main node radio link failure message to the auxiliary node through a signaling radio bearer 3.
Further, the master node radio link failure message includes at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
The embodiment of the invention also provides a method for maintaining the service continuity of the terminal in the multi-connection, which comprises the following steps:
the main node receives a main node wireless link failure message sent by the auxiliary node;
the main node sends a main node switching request to the auxiliary node;
the main node receives a main node switching confirmation sent by the auxiliary node;
and the main node sends a reconfiguration message to the auxiliary node to indicate that the main node of the terminal is switched to the auxiliary node.
Further, the method further comprises:
and the main node receives the auxiliary node reconfiguration message sent by the auxiliary node and indicates that the main node is used as a new auxiliary node.
Further, the terminal is configured with a separate signaling radio bearer, and the sending, by the primary node, the reconfiguration message to the secondary node includes:
and the main node sends the reconfiguration message to the auxiliary node through a separated signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the receiving, by the primary node, the primary node radio link failure message sent by the secondary node includes:
and the main node receives a main node radio link failure message sent by the auxiliary node through an Xn and/or X2 interface.
Further, the terminal is configured with a signaling radio bearer 3, and the primary node sends a reconfiguration message to the secondary node:
the primary node sends the reconfiguration message to the secondary node over an Xn and/or X2 interface.
Further, the master node radio link failure message includes at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
The embodiment of the invention also provides a multi-connection auxiliary node, which comprises a processor and a transceiver, wherein the transceiver is used for receiving the main node radio link failure message reported by the terminal, sending the main node radio link failure message to the main node, receiving the main node switching request sent by the main node, sending main node switching confirmation to the main node, receiving the reconfiguration message sent by the main node, sending the first radio resource control reconfiguration message to the terminal, and indicating the main node of the terminal to be switched to the auxiliary node.
Further, the transceiver is also used for completing a random access procedure with the terminal.
Further, the transceiver is further configured to send a secondary node reconfiguration message to the primary node, indicating that the primary node is a new secondary node; and sending a second radio resource control reconfiguration message to the terminal to indicate that the auxiliary node of the terminal is switched to the main node.
Further, the terminal is configured with a separate signaling radio bearer, and the transceiver is specifically configured to receive the primary node radio link failure message that is reported by the terminal through an auxiliary node link of the separate signaling radio bearer.
Further, the terminal is configured with a separate signaling radio bearer, and the transceiver is specifically configured to receive the reconfiguration message sent by the master node through the separate signaling radio bearer; and sending the first radio resource control reconfiguration message to the terminal through a separated signaling radio bearer.
Further, the transceiver is specifically configured to send the second rrc reconfiguration message to the terminal through a signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the transceiver is specifically configured to receive the master node radio link failure message reported by the terminal through the signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the transceiver is specifically configured to send the master node radio link failure message to the master node through an Xn and/or X2 interface.
Further, the terminal is configured with a signaling radio bearer 3, and the transceiver is specifically configured to receive a reconfiguration message sent by the master node through an Xn and/or X2 interface.
Further, the master node radio link failure message includes at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
Embodiments of the present invention also provide a terminal in multiple connections, comprising a processor and a transceiver,
the transceiver is used for sending a main node wireless link failure message to the auxiliary node when detecting that the main node wireless link fails; and receiving a first radio resource control reconfiguration message sent by the auxiliary node, wherein the first radio resource control reconfiguration message indicates that the main node of the terminal is switched to the auxiliary node.
Further, the transceiver is further configured to complete a random access procedure with the secondary node.
Further, the transceiver is further configured to receive a second rrc reconfiguration message sent by the secondary node, and instruct the secondary node of the terminal to switch to the primary node.
Further, the terminal is configured with a separate signaling radio bearer, and the transceiver is specifically configured to send the master node radio link failure message to the secondary node through a secondary node link of the separate signaling radio bearer.
Further, the terminal is configured with a separate signaling radio bearer, and the transceiver is specifically configured to receive the first radio resource control reconfiguration message sent by the secondary node through the separate signaling radio bearer.
Further, the transceiver is specifically configured to receive the second rrc reconfiguration message sent by the secondary node through a signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the transceiver is specifically configured to send the primary node radio link failure message to the secondary node through the signaling radio bearer.
Further, the master node radio link failure message includes at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
The embodiment of the invention also provides a main node in multi-connection, which comprises a processor and a transceiver, wherein the transceiver is used for receiving the main node radio link failure message sent by the auxiliary node; sending a main node switching request to the auxiliary node; receiving a main node switching confirmation sent by the auxiliary node; and sending a reconfiguration message to the auxiliary node to indicate that the main node of the terminal is switched to the auxiliary node.
Further, the transceiver is further configured to receive a secondary node reconfiguration message sent by the secondary node, indicating that the primary node is a new secondary node.
Further, the terminal is configured with a separate signaling radio bearer, and the transceiver is specifically configured to send the reconfiguration message to the secondary node through the separate signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the transceiver is specifically configured to receive a primary node radio link failure message sent by the secondary node through an Xn and/or X2 interface.
Further, the terminal is configured with a signaling radio bearer 3, and the transceiver is specifically configured to send the reconfiguration message to the secondary node over an Xn and/or X2 interface.
Further, the master node radio link failure message includes at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
Embodiments of the present invention also provide a communication device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor implements the method for maintaining service continuity of the terminal in multiple connections as described above when executing the program.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps in the method for maintaining service continuity of a terminal in multiple connections as described above.
The embodiment of the invention has the following beneficial effects:
in the scheme, when the wireless link of the main node fails, the auxiliary node is not released, and the auxiliary node is switched to the main node, so that the service interruption and resource release caused by the wireless link failure of the main node can be effectively avoided, and the continuity of the terminal service is ensured.
Drawings
Fig. 1 is a flowchart illustrating a method for maintaining service continuity of a terminal in multiple connections according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for maintaining service continuity of a terminal in multiple connections according to another embodiment of the present invention;
fig. 3 is a flowchart illustrating a method for maintaining service continuity of a terminal in multiple connections according to another embodiment of the present invention;
fig. 4 and fig. 5 are schematic flow charts illustrating a method for maintaining service continuity of a terminal in multiple connections according to a first embodiment of the present invention;
fig. 6 and fig. 7 are schematic flow charts of a method for maintaining service continuity of a terminal in multiple connections according to a second embodiment of the present invention;
FIG. 8 is a schematic diagram illustrating the components of an auxiliary node according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a terminal according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a master node according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention provides a method and a network unit for maintaining the service continuity of a terminal in multi-connection, which can solve the problems of discontinuous service and interruption time delay in the prior art under the condition of MN wireless link failure.
An embodiment of the present invention provides a method for maintaining service continuity of a terminal in multiple connections, as shown in fig. 1, including:
step 101: the auxiliary node receives a main node wireless link failure message reported by the terminal;
step 102: the auxiliary node sends the main node wireless link failure message to the main node;
step 103: the auxiliary node receives a main node switching request sent by the main node;
step 104: the auxiliary node sends a main node switching confirmation to the main node;
step 105: and the auxiliary node receives the reconfiguration message sent by the main node, sends a first radio resource control reconfiguration message to the terminal and indicates the main node of the terminal to be switched into the auxiliary node.
In the embodiment, when the wireless link failure of the main node occurs, the auxiliary node is not released, and the auxiliary node is switched to the main node, so that the service interruption and resource release caused by the wireless link failure of the main node can be effectively avoided, and the continuity of the terminal service is ensured.
Further, after the secondary node receives the rrc reconfiguration message sent by the primary node and sends the rrc reconfiguration message to the terminal, the method further includes:
and the auxiliary node and the terminal complete a random access process.
Further, after the secondary node and the terminal complete the random access procedure, the method further includes:
the auxiliary node sends an auxiliary node reconfiguration message to the main node and indicates that the main node is used as a new auxiliary node;
and the auxiliary node sends a second radio resource control reconfiguration message to the terminal to indicate that the auxiliary node of the terminal is switched to the main node.
Further, the terminal is configured with a separate signaling radio bearer, and the receiving, by the secondary node, the primary node radio link failure message reported by the terminal includes:
and the auxiliary node receives the main node radio link failure message reported by the terminal through an auxiliary node link of the separated signaling radio bearer.
Further, the terminal is configured with a separate signaling radio bearer, and the receiving, by the secondary node, the reconfiguration message sent by the primary node includes:
the auxiliary node receives the reconfiguration message sent by the main node through a separated signaling radio bearer;
the sending, by the secondary node, the first rrc reconfiguration message to the terminal includes:
and the auxiliary node sends the first radio resource control reconfiguration message to the terminal through a separated signaling radio bearer.
Further, the sending, by the secondary node, the second rrc reconfiguration message to the terminal includes:
and the auxiliary node sends the second radio resource control reconfiguration message to the terminal through a signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the receiving, by the secondary node, the primary node radio link failure message reported by the terminal includes:
and the auxiliary node receives the main node radio link failure message reported by the terminal through a signaling radio bearer 3.
Further, the terminal is configured with a signaling radio bearer 3, and the sending, by the secondary node, the primary node radio link failure message to the primary node includes:
and the secondary node sends the main node radio link failure message to the main node through an Xn and/or X2 interface.
Further, the terminal is configured with a signaling radio bearer 3, and the receiving, by the secondary node, the reconfiguration message sent by the primary node includes:
and the secondary node receives the reconfiguration message sent by the primary node through an Xn and/or X2 interface.
Further, the master node radio link failure message includes at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
An embodiment of the present invention further provides a method for maintaining service continuity of a terminal in multiple connections, as shown in fig. 2, including:
step 201: when detecting that the wireless link of the main node fails, the terminal sends a failure message of the wireless link of the main node to the auxiliary node;
step 202: and the terminal receives a first radio resource control reconfiguration message sent by the auxiliary node, wherein the first radio resource control reconfiguration message indicates that the main node of the terminal is switched to the auxiliary node.
In the embodiment, when the wireless link failure of the main node occurs, the auxiliary node is not released, and the auxiliary node is switched to the main node, so that the service interruption and resource release caused by the wireless link failure of the main node can be effectively avoided, and the continuity of the terminal service is ensured.
Further, after the terminal receives the first rrc reconfiguration message sent by the secondary node, the method further includes:
and the terminal and the auxiliary node finish the random access process.
Further, after the terminal and the secondary node complete the random access procedure, the method further includes:
and the terminal receives a second radio resource control reconfiguration message sent by the auxiliary node and indicates the auxiliary node of the terminal to be switched into the main node.
Further, the terminal is configured with a separate signaling radio bearer, and the sending, by the terminal, the primary node radio link failure message to the secondary node includes:
and the terminal sends the main node radio link failure message to the auxiliary node through an auxiliary node link for separating signaling radio bearer.
Further, the configuring, by the terminal, of the separate signaling radio bearer, and the receiving, by the terminal, the first radio resource control reconfiguration message sent by the secondary node includes:
and the terminal receives the first radio resource control reconfiguration message sent by the auxiliary node through a separated signaling radio bearer.
Further, the receiving, by the terminal, the second rrc reconfiguration message sent by the secondary node includes:
and the terminal receives the second radio resource control reconfiguration message sent by the auxiliary node through a signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the sending, by the terminal, the primary node radio link failure message to the secondary node includes:
and the terminal sends the main node radio link failure message to the auxiliary node through a signaling radio bearer 3.
Further, the master node radio link failure message includes at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
An embodiment of the present invention further provides a method for maintaining service continuity of a terminal in multiple connections, as shown in fig. 3, including:
step 301: the main node receives a main node wireless link failure message sent by the auxiliary node;
step 302: the main node sends a main node switching request to the auxiliary node;
step 303: the main node receives a main node switching confirmation sent by the auxiliary node;
step 304: and the main node sends a reconfiguration message to the auxiliary node to indicate that the main node of the terminal is switched to the auxiliary node.
In the embodiment, when the wireless link failure of the main node occurs, the auxiliary node is not released, and the auxiliary node is switched to the main node, so that the service interruption and resource release caused by the wireless link failure of the main node can be effectively avoided, and the continuity of the terminal service is ensured.
Further, the method further comprises:
and the main node receives the auxiliary node reconfiguration message sent by the auxiliary node and indicates that the main node is used as a new auxiliary node.
Further, the terminal is configured with a separate signaling radio bearer, and the sending, by the primary node, the reconfiguration message to the secondary node includes:
and the main node sends the reconfiguration message to the auxiliary node through a separated signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the receiving, by the primary node, the primary node radio link failure message sent by the secondary node includes:
and the main node receives a main node radio link failure message sent by the auxiliary node through an Xn and/or X2 interface.
Further, the terminal is configured with a signaling radio bearer 3, and the primary node sends a reconfiguration message to the secondary node:
the primary node sends the reconfiguration message to the secondary node over an Xn and/or X2 interface.
Further, the master node radio link failure message includes at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
The multi-connection scenario of the present invention includes a dual-connection scenario, and the method for maintaining service continuity of a terminal in multi-connection of the present invention is further described below with reference to the accompanying drawings and specific embodiments.
When MCG (master cell group) R L F (Radio L ink Failure ) occurs, there may be the following schemes according to different situations:
detailed description of the preferred embodiment
The UE is configured with split SRBs (split signaling radio bearers), such as SRB1 or SRB2, where in L TE dual connectivity, the data plane radio bearer can be served independently by the primary node or the secondary node, or by both the primary node and the secondary node.
When the UE detects that the wireless link of the main node fails, the UE does not initiate reconstruction, reports the occurrence of the wireless link failure to the MN through the SN link of the split SRB, can carry failure reasons and related measurement results, and the MN decides to switch or change the bearing type and the like according to the measurement results, and can preferentially consider switching to the SN when initiating switching. A flowchart of a specific example is shown in fig. 4, and includes:
the UE detects MCG transmission failure;
UE sends MN wireless link failure message to SN through MCG split bearer SRB;
the SN sends a MN radio link failure message to the MN;
MN sends switch request to SN;
the SN sends a switching confirmation to the MN;
the MN sends RRC reconfiguration information to the SN through the split SRB;
the SN sends RRC reconfiguration information to the UE through the split SRB;
and the SN and the UE finish the random access process, and the master node is reconfigured.
In addition, after the switching is completed, the SN can select the original MN as the SN of the SN itself, or select other nodes as the SN of the SN itself in addition, and continue to provide the double-link service. If the original MN is selected as the SN, SN modification (reconfiguration) may be required.
As shown in fig. 5, the method further includes:
SN and MN exchange SN modification information;
and the SN sends RRC reconfiguration information to the UE, and the auxiliary node completes the reconfiguration.
Detailed description of the invention
The UE configures an SRB3 (signaling radio bearers3, signaling radio bearer 3), and when the UE detects that a master node radio link fails, the UE does not initiate reconstruction, but reports the radio link failure of the MN to the SN through the SRB3 and carries a related measurement result; after receiving the radio link failure message, the SN interacts with the MN through an Xn and/or X2 interface to notify the MN that a radio link failure occurs, and a flowchart of a specific example is shown in fig. 6, and includes:
the UE detects MCG transmission failure;
UE sends MN radio link failure message to SN through SRB 3;
the SN informs the MN of the occurrence of the MN radio link failure message through an Xn and/or X2 interface;
MN sends switch request to SN;
the SN sends a switching confirmation to the MN;
the MN sends a reconfiguration message to the SN through an Xn and/or X2 interface;
the SN sends RRC reconfiguration information to the UE through the SRB 3;
and the SN and the UE finish the random access process, and the master node is reconfigured.
Specifically, the MN can switch to the SN, and at the same time, the MN releases the SN, and the SN independently provides services for the UE. And then the SN selects whether to add other nodes for double connection according to the measurement result of the UE.
In a specific example, the MN performs a handover with the SN as a target MN, and at the same time, the SN is added to the MN as a target SN, and after the handover is completed, the MN becomes a target SN and initiates an SN modification, as shown in fig. 7, the method further includes:
SN and MN exchange SN modification information;
and the SN sends RRC reconfiguration information to the UE, and the auxiliary node completes the reconfiguration.
Further, if the UE is not configured with either SRB3 or MCG split SRB, the UE initiates a MN link re-establishment after the R L F timer expires.
The above embodiment only takes the dual connection scenario as an example to describe the technical solution of the present invention, but the technical solution of the present invention is not only applicable to the dual connection scenario, but also applicable to N (N is an integer greater than 2) connection scenarios.
Embodiments of the present invention also provide a secondary node in a multi-connection, as shown in fig. 8, comprising a processor 41 and a transceiver 42,
the transceiver 42 is configured to receive a master node radio link failure message reported by a terminal, send the master node radio link failure message to the master node, receive a master node switching request sent by the master node, send a master node switching confirmation to the master node, receive a reconfiguration message sent by the master node, send a first radio resource control reconfiguration message to the terminal, and instruct the master node of the terminal to switch to the secondary node.
In the embodiment, when the wireless link failure of the main node occurs, the auxiliary node is not released, and the auxiliary node is switched to the main node, so that the service interruption and resource release caused by the wireless link failure of the main node can be effectively avoided, and the continuity of the terminal service is ensured.
Further, the transceiver 42 is also configured to complete a random access procedure with the terminal.
Further, the transceiver 42 is further configured to send a secondary node reconfiguration message to the primary node, indicating that the primary node is a new secondary node; and sending a second radio resource control reconfiguration message to the terminal to indicate that the auxiliary node of the terminal is switched to the main node.
Further, the terminal is configured with a separate signaling radio bearer, and the transceiver 42 is specifically configured to receive the primary node radio link failure message that is reported by the terminal through the secondary node link of the separate signaling radio bearer.
Further, the terminal is configured with a separate signaling radio bearer, and the transceiver 42 is specifically configured to receive the reconfiguration message sent by the master node through the separate signaling radio bearer; and sending the first radio resource control reconfiguration message to the terminal through a separated signaling radio bearer.
Further, the transceiver 42 is specifically configured to send the second rrc reconfiguration message to the terminal through a signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the transceiver 42 is specifically configured to receive the master node radio link failure message reported by the terminal through the signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the transceiver 42 is specifically configured to send the master node radio link failure message to the master node through an Xn and/or X2 interface.
Further, the terminal is configured with a signaling radio bearer 3, and the transceiver 42 is specifically configured to receive a reconfiguration message sent by the master node through an Xn and/or X2 interface.
Further, the master node radio link failure message includes at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
Embodiments of the present invention also provide a terminal in multiple connections, as shown in fig. 9, comprising a processor 51 and a transceiver 52,
the transceiver 52 is configured to send a master node radio link failure message to the secondary node when detecting that the master node radio link fails; and receiving a first radio resource control reconfiguration message sent by the auxiliary node, wherein the first radio resource control reconfiguration message indicates that the main node of the terminal is switched to the auxiliary node.
In the embodiment, when the wireless link failure of the main node occurs, the auxiliary node is not released, and the auxiliary node is switched to the main node, so that the service interruption and resource release caused by the wireless link failure of the main node can be effectively avoided, and the continuity of the terminal service is ensured.
Further, the transceiver 52 is also configured to complete a random access procedure with the secondary node.
Further, the transceiver 52 is further configured to receive a second rrc reconfiguration message sent by the secondary node, and instruct the secondary node of the terminal to switch to the primary node.
Further, the terminal is configured with a separate signaling radio bearer, and the transceiver 52 is specifically configured to send the primary node radio link failure message to the secondary node through the secondary node link of the separate signaling radio bearer.
Further, the terminal is configured with a separate signaling radio bearer, and the transceiver 52 is specifically configured to receive the first radio resource control reconfiguration message sent by the secondary node through the separate signaling radio bearer.
Further, the transceiver 52 is specifically configured to receive the second rrc reconfiguration message sent by the secondary node through a signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the transceiver 52 is specifically configured to send the primary node radio link failure message to the secondary node through the signaling radio bearer.
Further, the master node radio link failure message includes at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
Embodiments of the present invention also provide a master node in a multi-connection, as shown in fig. 6, comprising a processor 61 and a transceiver 62,
the transceiver 62 is configured to receive a primary node radio link failure message sent by a secondary node; sending a main node switching request to the auxiliary node; receiving a main node switching confirmation sent by the auxiliary node; and sending a reconfiguration message to the auxiliary node to indicate that the main node of the terminal is switched to the auxiliary node.
In the embodiment, when the wireless link failure of the main node occurs, the auxiliary node is not released, and the auxiliary node is switched to the main node, so that the service interruption and resource release caused by the wireless link failure of the main node can be effectively avoided, and the continuity of the terminal service is ensured.
Further, the transceiver 62 is further configured to receive a secondary node reconfiguration message sent by the secondary node, indicating that the primary node is a new secondary node.
Further, the terminal is configured with a separate signaling radio bearer, and the transceiver 62 is specifically configured to send the reconfiguration message to the secondary node through the separate signaling radio bearer.
Further, the terminal is configured with a signaling radio bearer 3, and the transceiver 62 is specifically configured to receive a primary node radio link failure message sent by the secondary node through an Xn and/or X2 interface.
Further, the terminal is configured with a signaling radio bearer 3, and the transceiver 62 is specifically configured to send the reconfiguration message to the secondary node through an Xn and/or X2 interface.
Further, the master node radio link failure message includes at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
Embodiments of the present invention also provide a communication device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor implements the method for maintaining service continuity of the terminal in multiple connections as described above when executing the program.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps in the method for maintaining service continuity of a terminal in multiple connections as described above.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (50)
1. A method for maintaining service continuity of a terminal in multiple connections, comprising:
the auxiliary node receives a main node wireless link failure message reported by the terminal;
the auxiliary node sends the main node wireless link failure message to the main node;
the auxiliary node receives a main node switching request sent by the main node;
the auxiliary node sends a main node switching confirmation to the main node;
and the auxiliary node receives the reconfiguration message sent by the main node, sends a first radio resource control reconfiguration message to the terminal and indicates the main node of the terminal to be switched into the auxiliary node.
2. The method of claim 1, wherein after the secondary node receives the rrc reconfiguration message sent by the primary node and sends the rrc reconfiguration message to the terminal, the method further comprises:
and the auxiliary node and the terminal complete a random access process.
3. The method for maintaining service continuity of a terminal in multiple connections according to claim 2, wherein after the secondary node and the terminal complete the random access procedure, the method further comprises:
the auxiliary node sends an auxiliary node reconfiguration message to the main node and indicates that the main node is used as a new auxiliary node;
and the auxiliary node sends a second radio resource control reconfiguration message to the terminal to indicate that the auxiliary node of the terminal is switched to the main node.
4. The method according to any of claims 1-3, wherein the terminal is configured with a separate signaling radio bearer, and the receiving, by the secondary node, the primary node radio link failure message reported by the terminal comprises:
and the auxiliary node receives the main node radio link failure message reported by the terminal through an auxiliary node link of the separated signaling radio bearer.
5. The method for maintaining terminal service continuity in multiple connections according to any one of claims 1 to 3, wherein the terminal is configured with a separate signaling radio bearer, and the receiving, by the secondary node, the reconfiguration message sent by the primary node comprises:
the auxiliary node receives the reconfiguration message sent by the main node through a separated signaling radio bearer;
the sending, by the secondary node, the first rrc reconfiguration message to the terminal includes:
and the auxiliary node sends the first radio resource control reconfiguration message to the terminal through a separated signaling radio bearer.
6. The method of claim 3, wherein the sending, by the secondary node, the second rrc reconfiguration message to the terminal comprises:
and the auxiliary node sends the second radio resource control reconfiguration message to the terminal through a signaling radio bearer.
7. The method according to any of claims 1-3, wherein the terminal is configured with a signaling radio bearer 3, and the receiving, by the secondary node, the primary node radio link failure message reported by the terminal comprises:
and the auxiliary node receives the main node radio link failure message reported by the terminal through a signaling radio bearer 3.
8. The method for maintaining terminal traffic continuity in multiple connections according to any of claims 1 to 3, wherein the terminal is configured with a signaling radio bearer 3, and the secondary node sending the primary node radio link failure message to the primary node comprises:
and the secondary node sends the main node radio link failure message to the main node through an Xn and/or X2 interface.
9. The method for maintaining terminal service continuity in multiple connections according to any one of claims 1 to 3, wherein the terminal is configured with a signaling radio bearer 3, and the receiving, by the secondary node, the reconfiguration message sent by the primary node comprises:
and the secondary node receives the reconfiguration message sent by the primary node through an Xn and/or X2 interface.
10. The method for maintaining terminal traffic continuity in multiple connections according to claim 1, wherein the primary node radio link failure message comprises at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
11. A method for maintaining service continuity of a terminal in multiple connections, comprising:
when detecting that the wireless link of the main node fails, the terminal sends a failure message of the wireless link of the main node to the auxiliary node;
and the terminal receives a first radio resource control reconfiguration message sent by the auxiliary node, wherein the first radio resource control reconfiguration message indicates that the main node of the terminal is switched to the auxiliary node.
12. The method for maintaining terminal traffic continuity in multiple connections according to claim 11, wherein after the terminal receives the first rrc reconfiguration message sent by the secondary node, the method further comprises:
and the terminal and the auxiliary node finish the random access process.
13. The method for maintaining terminal traffic continuity in multiple connections according to claim 12, wherein after the terminal and the secondary node complete the random access procedure, the method further comprises:
and the terminal receives a second radio resource control reconfiguration message sent by the auxiliary node and indicates the auxiliary node of the terminal to be switched into the main node.
14. The method for maintaining terminal traffic continuity in multiple connections according to any of claims 11 to 13, wherein the terminal is configured with a separate signaling radio bearer, and wherein the terminal sending the primary node radio link failure message to the secondary node comprises:
and the terminal sends the main node radio link failure message to the auxiliary node through an auxiliary node link for separating signaling radio bearer.
15. The method for maintaining terminal service continuity in multiple connections according to any one of claims 11 to 13, wherein the terminal is configured with a separate signaling radio bearer, and the receiving, by the terminal, the first rrc reconfiguration message sent by the secondary node comprises:
and the terminal receives the first radio resource control reconfiguration message sent by the auxiliary node through a separated signaling radio bearer.
16. The method of claim 13, wherein the receiving, by the terminal, the second rrc reconfiguration message sent by the secondary node comprises:
and the terminal receives the second radio resource control reconfiguration message sent by the auxiliary node through a signaling radio bearer.
17. The method for maintaining terminal service continuity in multiple connections according to any of claims 11 to 13, wherein the terminal is configured with a signaling radio bearer 3, and the terminal sending a primary node radio link failure message to a secondary node comprises:
and the terminal sends the main node radio link failure message to the auxiliary node through a signaling radio bearer 3.
18. The method for maintaining terminal traffic continuity in multiple connections according to claim 11, wherein the primary node radio link failure message comprises at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
19. A method for maintaining service continuity of a terminal in multiple connections, comprising:
the main node receives a main node wireless link failure message sent by the auxiliary node;
the main node sends a main node switching request to the auxiliary node;
the main node receives a main node switching confirmation sent by the auxiliary node;
and the main node sends a reconfiguration message to the auxiliary node to indicate that the main node of the terminal is switched to the auxiliary node.
20. The method for maintaining service continuity of a terminal in multiple connections according to claim 19, wherein the method further comprises:
and the main node receives the auxiliary node reconfiguration message sent by the auxiliary node and indicates that the main node is used as a new auxiliary node.
21. The method of claim 19 or 20, wherein the terminal is configured with a separate signaling radio bearer, and wherein the sending the reconfiguration message to the secondary node by the primary node comprises:
and the main node sends the reconfiguration message to the auxiliary node through a separated signaling radio bearer.
22. The method according to claim 19 or 20, wherein the terminal is configured with a signaling radio bearer 3, and the receiving, by the primary node, the primary node radio link failure message sent by the secondary node comprises:
and the main node receives a main node radio link failure message sent by the auxiliary node through an Xn and/or X2 interface.
23. Method for maintaining terminal traffic continuity in multiple connections according to claim 19 or 20, characterized in that the terminal is configured with a signaling radio bearer 3, the primary node sends a reconfiguration message to the secondary node:
the primary node sends the reconfiguration message to the secondary node over an Xn and/or X2 interface.
24. The method for maintaining terminal traffic continuity in multiple connections according to claim 19, wherein the primary node radio link failure message comprises at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
25. A secondary node in a multi-connection, comprising a processor and a transceiver,
the transceiver is used for receiving a master node radio link failure message reported by a terminal, sending the master node radio link failure message to the master node, receiving a master node switching request sent by the master node, sending a master node switching confirmation to the master node, receiving a reconfiguration message sent by the master node, sending a first radio resource control reconfiguration message to the terminal, and indicating that the master node of the terminal is switched to the auxiliary node.
26. The secondary node of claim 25, wherein the transceiver is further configured to complete a random access procedure with the terminal.
27. The secondary node of claim 26,
the transceiver is further configured to send a secondary node reconfiguration message to the primary node, indicating that the primary node is a new secondary node; and sending a second radio resource control reconfiguration message to the terminal to indicate that the auxiliary node of the terminal is switched to the main node.
28. The secondary node according to any of claims 25-27, wherein the terminal is configured with a split signaling radio bearer, and wherein the transceiver is specifically configured to receive the primary node radio link failure message reported by the terminal over a secondary node link of the split signaling radio bearer.
29. The secondary node according to any of claims 25-27, wherein the terminal is configured with a split signaling radio bearer, and wherein the transceiver is specifically configured to receive the reconfiguration message sent by the primary node over the split signaling radio bearer; and sending the first radio resource control reconfiguration message to the terminal through a separated signaling radio bearer.
30. The secondary node of claim 27, wherein the transceiver is further configured to send the second rrc reconfiguration message to the terminal over a signaling radio bearer.
31. The secondary node according to any of claims 25-27, wherein the terminal is configured with a signaling radio bearer 3, and wherein the transceiver is specifically configured to receive the primary node radio link failure message reported by the terminal over the signaling radio bearer.
32. The secondary node according to any of claims 25-27, wherein the terminal is configured with a signaling radio bearer 3, and wherein the transceiver is specifically configured to send the primary node radio link failure message to the primary node over an Xn and/or X2 interface.
33. The secondary node according to any of claims 25-27, wherein the terminal is configured with a signaling radio bearer 3, and wherein the transceiver is specifically configured to receive a reconfiguration message sent by the primary node over an Xn and/or X2 interface.
34. The secondary node of claim 25, wherein the primary node radio link failure message comprises at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
35. A terminal in multiple connections, comprising a processor and a transceiver,
the transceiver is used for sending a main node wireless link failure message to the auxiliary node when detecting that the main node wireless link fails; and receiving a first radio resource control reconfiguration message sent by the auxiliary node, wherein the first radio resource control reconfiguration message indicates that the main node of the terminal is switched to the auxiliary node.
36. The terminal of claim 35, wherein the transceiver is further configured to complete a random access procedure with the secondary node.
37. The terminal of claim 36, wherein the transceiver is further configured to receive a second rrc reconfiguration message sent by the secondary node, instructing the secondary node of the terminal to switch to the primary node.
38. The terminal according to any of claims 35-37, wherein the terminal is configured with a separate signaling radio bearer, and wherein the transceiver is specifically configured to send the primary node radio link failure message to the secondary node over a secondary node link of the separate signaling radio bearer.
39. The terminal according to any of claims 35-37, wherein the terminal is configured with a separate signaling radio bearer, and wherein the transceiver is specifically configured to receive the first radio resource control reconfiguration message sent by the secondary node over the separate signaling radio bearer.
40. The terminal of claim 37, wherein the transceiver is specifically configured to receive the second rrc reconfiguration message sent by the secondary node through a signaling radio bearer.
41. The terminal according to any of claims 35-37, wherein the terminal is configured with a signaling radio bearer 3, and wherein the transceiver is configured to send the primary node radio link failure message to the secondary node via the signaling radio bearer.
42. The terminal of claim 35, wherein the primary node radio link failure message comprises at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
43. A master node in a multi-connection, comprising a processor and a transceiver,
the transceiver is used for receiving a main node radio link failure message sent by the auxiliary node; sending a main node switching request to the auxiliary node; receiving a main node switching confirmation sent by the auxiliary node; and sending a reconfiguration message to the auxiliary node to indicate that the main node of the terminal is switched to the auxiliary node.
44. The master node of claim 43, wherein the transceiver is further configured to receive a secondary node reconfiguration message sent by the secondary node indicating that the master node is to be a new secondary node.
45. The primary node of claim 43 or 44, wherein the terminal is configured with a separate signaling radio bearer, and wherein the transceiver is configured to send the reconfiguration message to the secondary node over the separate signaling radio bearer.
46. The master node according to claim 43 or 44, wherein the terminal is configured with a signaling radio bearer 3, and wherein the transceiver is specifically configured to receive a master node radio link failure message sent by the secondary node over an Xn and/or X2 interface.
47. The master node according to claim 43 or 44, wherein the terminal is configured with a signalling radio bearer 3, and wherein the transceiver is configured to send the reconfiguration message to the secondary node over an Xn and/or X2 interface.
48. The master node of claim 43, wherein the master node radio link failure message comprises at least one of: the reason for the failure of the wireless link of the main node and the measurement result of the main node.
49. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor; characterized in that the processor implements the procedure when executing the program, the method for maintaining terminal service continuity in multiple connections according to any one of claims 1 to 10, the method for maintaining terminal service continuity in multiple connections according to any one of claims 11 to 18, or the method for maintaining terminal service continuity in multiple connections according to any one of claims 19 to 24.
50. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the method for maintaining terminal service continuity in multiple connections according to any one of claims 1 to 10 or the method for maintaining terminal service continuity in multiple connections according to any one of claims 11 to 18 or the steps of the method for maintaining terminal service continuity in multiple connections according to any one of claims 19 to 24.
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| CN201910010575.4A CN111417154A (en) | 2019-01-07 | 2019-01-07 | Method for keeping terminal service continuity in multiple connections and network unit |
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| CN201910010575.4A CN111417154A (en) | 2019-01-07 | 2019-01-07 | Method for keeping terminal service continuity in multiple connections and network unit |
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| WO2024027500A1 (en) * | 2022-08-05 | 2024-02-08 | 大唐移动通信设备有限公司 | Information transmission method and apparatus, and device |
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