CN107438266B - Method, device and equipment for reestablishing wireless link - Google Patents
Method, device and equipment for reestablishing wireless link Download PDFInfo
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- CN107438266B CN107438266B CN201610373576.1A CN201610373576A CN107438266B CN 107438266 B CN107438266 B CN 107438266B CN 201610373576 A CN201610373576 A CN 201610373576A CN 107438266 B CN107438266 B CN 107438266B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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Abstract
The embodiment of the invention provides a method, a device and equipment for reestablishing a wireless link, wherein the method comprises the following steps: if the terminal equipment sends a switching measurement report for N times to a first base station and the terminal equipment does not receive a switching indication returned by the first base station, the terminal equipment sends an RRC connection reestablishment request to a second base station; n is a positive integer; the terminal equipment receives an RRC reestablishment message returned by the second base station; the terminal equipment completes RRC reestablishment according to the RRC reestablishment message and sends the RRC reestablishment completion message to the second base station, the terminal equipment actively initiates RRC reestablishment after sending a measurement report for multiple times and receiving no switching instruction sent by the base station, RRC reestablishment is completed, the situation that the terminal equipment is always in a weak coverage cell due to the problem of a downlink is avoided, and communication quality is effectively improved.
Description
Technical Field
The present invention relates to communications technologies, and in particular, to a method, an apparatus, and a device for reestablishing a wireless link.
Background
In a Long Term Evolution (LTE) system, when an abnormality occurs in a radio link, for example: radio link failure, handover failure from Evolved UMTS Terrestrial Radio Access (E-UTRA), integrity check failure, Radio Resource Control (RRC) reconfiguration failure, and the like, all trigger the terminal device to initiate RRC connection reestablishment to recover the RRC connection, that is, recover the Radio link.
However, in some weak coverage areas, that is, areas with weak signals, the terminal device may report a measurement report of a link, and if the terminal reports the measurement report many times, the terminal still cannot receive a handover command issued by the base station and cannot reach a trigger condition for reestablishing any of the radio links, the terminal may not initiate RRC connection reestablishment, which may cause the terminal to be always in a weak coverage cell and cannot be handed over, and if the terminal is a voice user, the voice reception may lose words or sentences.
In summary, when the terminal device is in the weak coverage area, the terminal device reports the measurement report of multiple handovers, and due to the poor downlink, the handover command of the base station cannot be received all the time, resulting in poor user perception.
Disclosure of Invention
The embodiment of the invention provides a method, a device and equipment for reestablishing a wireless link, which are used for solving the problem that when terminal equipment is in a weak coverage area, the terminal equipment reports a measurement report of multiple switching, and due to the reason that a downlink is poor, a switching command of a base station cannot be received all the time, so that user perception is poor.
The first aspect of the present invention provides a method for reestablishing a radio link, including:
if the terminal equipment sends a switching measurement report for N times to a first base station and the terminal equipment does not receive a switching indication returned by the first base station, the terminal equipment sends a Radio Resource Control (RRC) connection reestablishment request to a second base station; n is a positive integer;
the terminal equipment receives an RRC reestablishment message returned by the second base station;
and the terminal equipment completes RRC reconstruction according to the RRC reconstruction message and sends the RRC reconstruction completion message to the second base station.
Optionally, if the terminal device sends the handover measurement report to the first base station N times and the terminal device does not receive the handover indication returned by the first base station, before the terminal device sends the RRC connection reestablishment request to the first base station, the method further includes:
the terminal equipment receives RRC scene reconstruction information sent by the first base station; the RRC reestablishment scene message instructs the terminal equipment to send N switching measurement reports to the first base station, and the terminal equipment initiates RRC reestablishment when not receiving a switching instruction returned by the first base station;
alternatively, the first and second electrodes may be,
the terminal device configures an RRC reestablishment scene, wherein the RRC reestablishment scene comprises the following steps: and the terminal equipment sends a switching measurement report for N times to a base station, and the terminal equipment initiates RRC reestablishment when not receiving a switching indication returned by the base station.
Optionally, the second base station is the first base station.
Optionally, before the terminal device sends the handover measurement report to the first base station N times, the method further includes:
and the terminal equipment detects that the terminal equipment is in the switchable area and meets the cell switching condition, and then generates the switching measurement report.
A second aspect of the present invention provides a radio link reestablishing apparatus, including: the device comprises a sending module used for sending messages, a processing module used for controlling the execution of instructions and a receiving module used for receiving messages;
the sending module is configured to send a radio resource control RRC connection reestablishment request to a second base station if the sending module sends the handover measurement report to the first base station N times and the receiving module does not receive the handover indication returned by the first base station; n is a positive integer;
the receiving module is further configured to receive an RRC reestablishment message returned by the second base station;
the sending module is further configured to complete RRC reestablishment according to the RRC reestablishment message, and send an RRC reestablishment complete message to the second base station.
Optionally, the receiving module is further configured to receive an RRC reestablishment scenario message sent by the first base station; and the RRC reestablishment scene message instructs the radio link reestablishment device to send N switching measurement reports to the first base station, and RRC reestablishment is initiated when the switching instruction returned by the first base station is not received.
Optionally, the processing module is further configured to configure an RRC reestablishment scenario, where the RRC reestablishment scenario includes: and the radio link reestablishing device sends N switching measurement reports to the base station and initiates RRC reestablishment when the switching indication returned by the base station is not received.
Optionally, the processing module is further configured to generate the handover measurement report if the radio link reestablishment apparatus is detected to be in a switchable area and meets a cell handover condition;
wherein the second base station is the first base station.
A third aspect of the present invention provides a terminal device, including: a memory storing program instructions, a processor for controlling execution of the program instructions, a receiver for receiving messages, and a receiver for sending messages;
the transmitter is used for transmitting a Radio Resource Control (RRC) connection reestablishment request to a second base station if a handover measurement report is transmitted to a first base station for N times and the receiver does not receive a handover indication returned by the first base station; n is a positive integer;
the receiver is further configured to receive an RRC reestablishment message returned by the second base station;
the transmitter is further configured to complete RRC reestablishment according to the RRC reestablishment message, and transmit an RRC reestablishment complete message to the second base station.
According to the method, the device and the equipment for reestablishing the wireless link, a new scene for triggering RRC reestablishment is added, the terminal equipment sends the measurement report to the base station when detecting that the switching condition is met, the terminal equipment actively triggers the RRC reestablishment after sending the measurement report for multiple times and not receiving the switching instruction returned by the base station, and sends the RRC reestablishment to the original base station or other selected base stations, so that the problem that the terminal equipment is always in a weak coverage area due to the fact that the switching instruction of the base station cannot be received due to the downlink is effectively avoided, and the communication quality is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a radio link reestablishment method according to a first embodiment of the present invention;
fig. 2 is an interactive schematic diagram of a specific implementation of the method for reestablishing a wireless link according to the present invention;
fig. 3 is a schematic structural diagram of a radio link reestablishment apparatus according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a terminal device according to a first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart of a first embodiment of a radio link reestablishment method according to the present invention, and as shown in fig. 1, the radio link reestablishment method is applied in a terminal device, for example: the specific steps of the wireless link reestablishing method comprise:
s101: and if the terminal equipment sends a switching measurement report for N times to a first base station and the terminal equipment does not receive a switching instruction returned by the first base station, the terminal equipment sends an RRC connection reestablishment request to a second base station.
In this embodiment, when the terminal device moves to a weak coverage area and is a handover area that can be switched, and measures that a handover event is satisfied, a measurement report may be reported to a connected base station, but because the weak coverage area has poor signal quality, but does not reach a condition that any one of currently specified radio link failure, handover failure from E-UTRA handover failure, integrity check failure, and RRC reconfiguration failure RRC can trigger RRC reestablishment, the terminal device is only in the weak coverage area, in this scheme, a new scenario is proposed, that is, after the terminal device reports multiple measurement reports to the base station and has not received a handover instruction returned by the base station, the terminal device actively triggers RRC reestablishment, and sends an RRC reestablishment request to a second base station, where the second base station may be a first base station to which the terminal device originally accesses, or the terminal device may select a new base station with better signal quality, which is not limited in this scheme.
And the terminal equipment sends an RRC connection reestablishment request to the second base station, wherein the RRC connection reestablishment request at least comprises the identification of the terminal equipment and the connection reestablishment reason. Previous physical cell identification, etc. information may also be included.
Optionally, in a specific implementation manner, before the terminal device sends the handover measurement report to the first base station for N times, if the terminal device detects that the terminal device is in the switchable area and meets the cell switching condition, the handover measurement report is generated.
Before the step S101 is executed, the terminal device needs to acquire the trigger condition to determine to initiate the RRC reestablishment process, and the specific implementation manners at least include the following two types:
in a first implementation manner, the terminal device receives an RRC reestablishment scene message sent by the first base station; and the RRC reestablishment scene message instructs the terminal equipment to send N switching measurement reports to the first base station, and the terminal equipment initiates RRC reestablishment when not receiving the switching instruction returned by the first base station.
The meaning of the scheme is that the starting scene can be determined by the base station and sent to the terminal equipment by the base station through an air interface, as a standardized process, the base station informs the terminal equipment that the RRC reestablishment process can be started in the scene, and determines the specific value of the N.
In a second implementation manner, the terminal device configures an RRC reestablishment scenario, where the RRC reestablishment scenario includes: and the terminal equipment sends a switching measurement report for N times to a base station, and the terminal equipment initiates RRC reestablishment when not receiving a switching indication returned by the base station.
The meaning of the scheme is that the scene can be directly pre-configured on the side of the terminal equipment in the design stage, the value of N can be directly pre-configured, and the terminal equipment can directly trigger RRC reconstruction when detecting the scene.
S102: and the terminal equipment receives the RRC reestablishment message returned by the second base station.
In this step, the second base station determines whether to allow the UE to perform RRC connection reestablishment according to the information in the RRC connection reestablishment request, and returns corresponding information, that is, radio resource configuration information, that is, the terminal device receives an RRC reestablishment message returned by the second base station.
S103: and the terminal equipment completes RRC reconstruction according to the RRC reconstruction message and sends the RRC reconstruction completion message to the second base station.
After receiving the RRC reestablishment message returned by the second base station, the terminal device performs a radio resource configuration process according to the radio resource configuration information carried in the RRC reestablishment message, and configures an underlying algorithm, a key, and the like, optionally, performs related measurement after configuration is completed.
And after the configuration is completed, the terminal equipment sends an RRC reestablishment completion message to the second base station through the bottom layer to complete the reestablishment of the whole RRC link. The RRC reestablishment complete message may carry a field RLF-InfoAvailable indicating the possibility of RLF related measurements.
In the method for reestablishing a radio link provided by this embodiment, a new scenario for triggering RRC reestablishment is added, and a terminal device sends a measurement report to a base station when detecting that a handover condition is satisfied, and after the terminal device sends the measurement report many times and does not receive a handover instruction returned by the base station, the terminal device actively triggers RRC reestablishment and sends RRC reestablishment to an original base station or another selected base station, so that a problem that the terminal device is always in a weak coverage area due to failure to receive a handover command of the base station due to a downlink is effectively avoided, and communication quality is effectively improved.
Fig. 2 is an interaction schematic diagram of a specific implementation of the radio link reestablishment method of the present invention, and as shown in fig. 2, on the basis of the foregoing embodiment, a specific implementation process of the radio link reestablishment method is provided as follows:
s201: the UE sends a measurement report to the access network.
S202: the UE sends a measurement report to the access network.
S203: the UE sends a measurement report to the access network.
S204: the UE sends a measurement report to the access network.
S205: the UE sends a measurement report to the access network.
S206: and if the UE sends the measurement report for 5 times and does not receive a switching instruction returned by the access network, sending an RRC connection reestablishment request to the access network.
S207: and the UE receives the RRC reestablishment message returned by the access network.
S208: and the UE sends an RRC reestablishment completion message to the access network.
In this scheme, in addition to the above-mentioned several triggering terminal devices such as radio link failure and handover failure, that is, the scenario in which the UE initiates RRC connection reestablishment in the above step, the following scenarios are newly added as conditions for triggering reestablishment:
UE moves to a switching zone, and when a switching event meeting the switching is measured, a measurement report is reported to a base station; after the UE initiates the measurement report N times, for example, the above five times, and does not receive the handover command returned by the access network, the UE triggers to initiate RRC connection re-establishment; the N may be sent to the UE over the air interface by the base station as a standardized process, or may be configured in the UE as a private process of the UE.
In the current product implementation, N is fixed to 5 and configured at the UE. As shown in fig. 2, if the UE reports 5 measurement reports and still does not receive the handover command from the base station, the UE initiates an RRC connection reestablishment request.
In this scenario, after the terminal device sends the measurement report N times through detection, RRC connection reestablishment is initiated, and since cell selection is performed during reestablishment, a cell that can reside can be selected to quickly establish an air interface connection, thereby recovering a wireless link and improving user perception. The scheme can solve the problems that the terminal equipment is always hung in a cell with poor signals because the terminal equipment meets the switching in the cell and does not receive a switching command, cell selection can be carried out again when RRC connection is reestablished, and the terminal equipment can select the cell with better signals to be accessed again.
Fig. 3 is a schematic structural diagram of a radio link reestablishment apparatus according to a first embodiment of the present invention, and as shown in fig. 3, the radio link reestablishment apparatus 10 specifically includes: a sending module 11 for sending messages, a processing module 12 for controlling the execution of instructions, and a receiving module 13 for receiving messages;
the sending module 11 is configured to send a radio resource control RRC connection reestablishment request to a second base station if the sending module sends the handover measurement report to the first base station for N times and the receiving module does not receive the handover indication returned by the first base station; n is a positive integer;
the receiving module 13 is further configured to receive an RRC reestablishment message returned by the second base station;
the sending module 11 is further configured to complete RRC reestablishment according to the RRC reestablishment message, and send an RRC reestablishment complete message to the second base station.
Optionally, the receiving module 13 is further configured to receive an RRC reestablishment scenario message sent by the first base station; and the RRC reestablishment scene message instructs the radio link reestablishment device to send N switching measurement reports to the first base station, and RRC reestablishment is initiated when the switching instruction returned by the first base station is not received.
Optionally, the processing module 12 is further configured to configure an RRC reconstruction scenario, where the RRC reconstruction scenario includes: and the radio link reestablishing device sends N switching measurement reports to the base station and initiates RRC reestablishment when the switching indication returned by the base station is not received.
Optionally, the processing module 12 is further configured to generate the handover measurement report if it is detected that the radio link re-establishing apparatus is in a switchable area and meets a cell switching condition;
wherein the second base station is the first base station.
The radio link reestablishment apparatus provided in this embodiment is configured to execute the technical solutions of the foregoing method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Fig. 4 is a schematic structural diagram of a terminal device according to a first embodiment of the present invention. As shown in fig. 4, the terminal device 20 provided in the present embodiment includes: a memory 21 in which program instructions are stored, a processor 22 for controlling the execution of the program instructions, a receiver 24 for receiving messages, and a transmitter 23 for transmitting messages;
the transmitter 23 is configured to send a radio resource control RRC connection reestablishment request to a second base station if the handover measurement report is sent to a first base station N times and the receiver 24 does not receive a handover instruction returned by the first base station; n is a positive integer;
the receiver 24 is further configured to receive an RRC reestablishment message returned by the second base station;
the transmitter 23 is further configured to complete RRC reestablishment according to the RRC reestablishment message, and send an RRC reestablishment complete message to the second base station.
Optionally, the receiver 24 is further configured to receive an RRC reestablishment scenario message sent by the first base station; and the RRC reestablishment scene message instructs the radio link reestablishment device to send N switching measurement reports to the first base station, and RRC reestablishment is initiated when the switching instruction returned by the first base station is not received.
Optionally, the processor 22 is further configured to configure an RRC reconstruction scenario, where the RRC reconstruction scenario includes: and the radio link reestablishing device sends N switching measurement reports to the base station and initiates RRC reestablishment when the switching indication returned by the base station is not received.
Optionally, the processor 22 is further configured to generate the handover measurement report if it is detected that the radio link re-establishment apparatus is in a handover area and a cell handover condition is met;
wherein the second base station is the first base station.
The terminal device provided in this embodiment is configured to execute the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar, which are not described herein again.
In the above embodiments of the terminal device, it should be understood that the Processor may be a Central Processing Unit (CPU), other general-purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The aforementioned program may be stored in a computer-readable memory. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape (magnetic tape), floppy disk (flexible disk), optical disk (optical disk), and any combination thereof.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A method for radio link re-establishment, comprising:
if the terminal equipment sends a switching measurement report for N times to a first base station and the terminal equipment does not receive a switching indication returned by the first base station, the terminal equipment sends a Radio Resource Control (RRC) connection reestablishment request to a second base station; n is a positive integer;
the terminal equipment receives an RRC reestablishment message returned by the second base station;
the terminal equipment completes RRC reconstruction according to the RRC reconstruction message and sends an RRC reconstruction completion message to the second base station; the second base station is the first base station;
wherein, before the terminal device sends a RRC connection reestablishment request to the first base station if the terminal device sends a handover measurement report to the first base station N times and the terminal device does not receive a handover indication returned by the first base station, the method further includes:
the terminal equipment receives RRC scene reconstruction information sent by the first base station; the RRC reestablishment scene message instructs the terminal equipment to send N switching measurement reports to the first base station, and the terminal equipment initiates RRC reestablishment when not receiving a switching instruction returned by the first base station;
or, the terminal device configures an RRC reestablishment scenario, where the RRC reestablishment scenario includes: and the terminal equipment sends a switching measurement report for N times to a base station, and the terminal equipment initiates RRC reestablishment when not receiving a switching indication returned by the base station.
2. The method of claim 1, wherein before the terminal device sends the handover measurement report to the first base station N times, the method further comprises:
and the terminal equipment detects that the terminal equipment is in the switchable area and meets the cell switching condition, and then generates the switching measurement report.
3. A radio link reestablishment apparatus, comprising: the device comprises a sending module used for sending messages, a processing module used for controlling the execution of instructions and a receiving module used for receiving messages;
the sending module is configured to send a radio resource control RRC connection reestablishment request to a second base station if the sending module sends the handover measurement report to the first base station N times and the receiving module does not receive the handover indication returned by the first base station; n is a positive integer;
the receiving module is further configured to receive an RRC reestablishment message returned by the second base station;
the sending module is further configured to complete RRC reestablishment according to the RRC reestablishment message, and send an RRC reestablishment complete message to the second base station; the second base station is the first base station;
the receiving module is further configured to receive an RRC reestablishment scene message sent by the first base station; the RRC reestablishment scene message instructs the radio link reestablishment device to send N switching measurement reports to the first base station, and RRC reestablishment is initiated when the switching instruction returned by the first base station is not received; alternatively, the first and second electrodes may be,
the processing module is further configured to configure an RRC reestablishment scenario, where the RRC reestablishment scenario includes: and the radio link reestablishing device sends N switching measurement reports to the base station and initiates RRC reestablishment when the switching indication returned by the base station is not received.
4. The apparatus of claim 3, wherein the processing module is further configured to generate the handover measurement report if the radio link re-establishment apparatus is detected to be in a handover area and a cell handover condition is satisfied.
5. A terminal device, comprising: a memory storing program instructions, a processor for controlling execution of the program instructions, a receiver for receiving messages, and a receiver for sending messages;
the transmitter is used for transmitting a Radio Resource Control (RRC) connection reestablishment request to a second base station if a handover measurement report is transmitted to a first base station for N times and the receiver does not receive a handover indication returned by the first base station; n is a positive integer;
the receiver is further configured to receive an RRC reestablishment message returned by the second base station;
the transmitter is further configured to complete RRC reestablishment according to the RRC reestablishment message, and transmit an RRC reestablishment complete message to the second base station; the second base station is the first base station;
the receiver is further configured to receive an RRC reestablishment scenario message sent by the first base station; the RRC reestablishment scene message instructs the radio link reestablishment device to send N switching measurement reports to the first base station, and RRC reestablishment is initiated when the switching instruction returned by the first base station is not received; alternatively, the first and second electrodes may be,
the processor is further configured to configure an RRC reconstruction scenario, the RRC reconstruction scenario including: and the radio link reestablishing device sends N switching measurement reports to the base station and initiates RRC reestablishment when the switching indication returned by the base station is not received.
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| CN110035464B (en) * | 2018-01-11 | 2021-01-05 | 华为技术有限公司 | Switching method, terminal equipment and network equipment |
| US11202237B2 (en) * | 2018-07-24 | 2021-12-14 | Mediatek Inc. | Method for preventing an inter-rat change from being triggered and communications apparatus utilizing the same |
| JP7386601B2 (en) * | 2018-10-18 | 2023-11-27 | キヤノン株式会社 | Communication device, communication device control method, and program |
| CN111479333B (en) * | 2019-01-23 | 2022-09-02 | 华为技术有限公司 | Communication method and communication device |
| CN109982427B (en) * | 2019-03-29 | 2021-11-16 | 联想(北京)有限公司 | Information processing method and device |
| CN114339916A (en) * | 2021-12-31 | 2022-04-12 | 哲库科技(北京)有限公司 | Wireless link reestablishing method and related device |
| CN115397040A (en) * | 2022-08-12 | 2022-11-25 | 西安广和通无线通信有限公司 | Data link recovery method and device, electronic equipment and storage medium |
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