CN108616939B - Radio resource control RRC reestablishment processing method and device - Google Patents
Radio resource control RRC reestablishment processing method and device Download PDFInfo
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- CN108616939B CN108616939B CN201611192821.5A CN201611192821A CN108616939B CN 108616939 B CN108616939 B CN 108616939B CN 201611192821 A CN201611192821 A CN 201611192821A CN 108616939 B CN108616939 B CN 108616939B
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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
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
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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
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
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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
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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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
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
Abstract
The embodiment of the application provides a radio resource control RRC reestablishment processing method, which comprises the following steps: receiving a Radio Resource Control (RRC) reestablishment request message sent by a terminal; inquiring whether the terminal has the context; if the context of the terminal exists, judging whether the terminal is in an RRC switching process; if the terminal is in the switching process, judging whether an RRC reestablishment request message sent by the terminal carries target cell information or not; and if the RRC reestablishment request message sent by the terminal carries the target cell information, judging whether to reestablish the terminal according to the pre-acquired target cell information and the target cell information in the RRC reestablishment request message. The source base station can not directly send RRC reestablishment rejection information to the UE, so that the disconnection rate of the UE in the network is reduced, and the user perception is improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a radio resource control RRC reestablishment processing method and a radio resource control RRC reestablishment processing apparatus.
Background
In an actual wireless network, in a handover process of a user equipment UE (user equipment) from a source base station to a target base station, after the UE receives an RRC connection reconfiguration message (RRCConnectionReconfiguration) sent by the source base station, an RRC connection reconfiguration complete message (RRCConnectionReconfiguration complete) is sent to the target base station, but due to interference or environmental factors, a higher layer of the target base station may not receive the message, but the terminal does not know that the UE considers that Random Access is completed and handover is successful on a target side after receiving an msg2 (Random Access Response) and sending an msg3 message (reconfiguration complete message) to the target base station. At this time, when the UE initiates a reestablishment request, the UE will use the target cell as a source cell for reestablishment, and initiate reestablishment in other cells.
In this scenario, when receiving a reestablishment request sent by a UE carrying target cell information, a source base station directly replies an RRC reestablishment rejection message (rrcconnectionreestablishment reject object), because a protocol specifies that cell information carried by the reestablishment request is a source cell in which handover fails or cell information in which reestablishment occurs, the scenario is that cell information carrying a target is reestablished at the source side, and the source side base station cell does not store the UE context of the user in the target cell, the source base station certainly rejects the reestablishment request of the UE because the query of the UE context fails. Finally, the UE will cause call drop due to handover and reestablishment failure, and affect key Performance indicator (kpi) of the network.
Disclosure of Invention
In view of the above problems, embodiments of the present application are proposed to provide a radio resource control RRC re-establishment processing method and a corresponding radio resource control RRC re-establishment processing apparatus that overcome or at least partially solve the above problems.
In order to solve the above problem, an embodiment of the present application discloses a radio resource control RRC reestablishment processing method, including:
receiving a Radio Resource Control (RRC) reestablishment request message sent by a terminal;
inquiring whether the terminal has the context;
if the context of the terminal exists, judging whether the terminal is in an RRC switching process;
if the terminal is in the switching process, judging whether an RRC reestablishment request message sent by the terminal carries target cell information or not;
and if the RRC reestablishment request message sent by the terminal carries the target cell information, judging whether to reestablish the terminal according to the pre-acquired target cell information and the target cell information in the RRC reestablishment request message.
Preferably, the method further comprises the following steps:
before receiving a Radio Resource Control (RRC) reestablishment request message sent by a terminal, determining a target cell aiming at a measurement report sent by the terminal;
sending a switching request message to a base station of the target cell;
receiving a switching request confirmation message returned by the base station of the target cell; the handover request acknowledgement message includes target cell information.
Preferably, the target cell information includes: a radio network temporary identifier C-RNTI, a cell physical identifier PCI and a short message authentication code ShortMAC-I;
the step of judging whether to perform reestablishment processing for the terminal according to the pre-acquired target cell information and the target cell information in the RRC reestablishment request message includes:
judging whether the C-RNTI and the PCI in the pre-acquired target cell information are the same as the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message;
if the C-RNTI and the PCI in the pre-acquired target cell information are the same as the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message, judging whether a short message authentication code ShortMAC-I in the pre-acquired target cell information is the same as the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message;
and if the short message authentication code ShortMAC-I in the pre-acquired target cell information is the same as the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message, determining to reestablish the target cell information.
Preferably, the step of determining whether to perform reestablishment processing for the terminal according to the pre-acquired target cell information and the target cell information in the RRC reestablishment request message further includes:
if the C-RNTI and the PCI in the pre-acquired target cell information are different from the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message, determining to refuse reestablishment;
and if the short message authentication code ShortMAC-I in the pre-acquired target cell information is different from the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message, determining that the reestablishment is rejected.
Preferably, the step of determining whether the RRC reestablishment request message sent by the terminal carries target cell information includes:
and judging whether the RRC reestablishment request message carries the PCI of the target cell.
The embodiment of the present application further discloses a radio resource control RRC reestablishment processing apparatus, including:
a reestablishment request receiving module, configured to receive a radio resource control RRC reestablishment request message sent by the terminal;
the query module is used for querying whether the context of the terminal exists;
the first judging module is used for judging whether the terminal is in an RRC switching process if the context of the terminal exists;
a second determining module, configured to determine whether an RRC reestablishment request message sent by the terminal carries target cell information if the terminal is in a handover process;
a third determining module, configured to determine whether to perform reestablishment processing for the terminal according to pre-obtained target cell information and the target cell information in the RRC reestablishment request message if the RRC reestablishment request message sent by the terminal carries the target cell information.
Preferably, the method further comprises the following steps:
a target cell determining module, configured to determine a target cell for a measurement report sent by a terminal before receiving a radio resource control RRC reestablishment request message sent by the terminal;
a handover request sending module, configured to send a handover request message to a base station of the target cell;
a switching request confirmation receiving module, configured to receive a switching request confirmation message returned by the base station of the target cell; the handover request acknowledgement message includes target cell information.
Preferably, the target cell information includes: a radio network temporary identifier C-RNTI, a cell physical identifier PCI and a short message authentication code ShortMAC-I;
the third judging module comprises:
a first message judgment sub-module, configured to judge whether the C-RNTI and the PCI in the pre-acquired target cell information are the same as the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message;
a second message judgment sub-module, configured to judge whether a short message authentication code ShortMAC-I in the pre-acquired target cell information is the same as a short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message, if the C-RNTI and the PCI in the pre-acquired target cell information are the same as the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message;
and the first determining submodule is used for determining to reestablish the target cell information if the short message authentication code ShortMAC-I in the pre-acquired target cell information is the same as the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message.
Preferably, the third determining module further includes:
a second determining submodule, configured to determine that reestablishment is denied if the C-RNTI and the PCI in the pre-obtained target cell information are different from the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message;
and a third determining sub-module, configured to determine that the reestablishment is rejected if the short message authentication code ShortMAC-I in the pre-acquired target cell information is different from the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message.
Preferably, the second determination module includes:
and the PCI judgment submodule is used for judging whether the RRC reestablishment request message carries the PCI of the target cell.
The embodiment of the application has the following advantages:
in the embodiment of the application, a source base station acquires target cell information in advance, and judges whether an RRC reestablishment request message carries the target cell information when the context is successfully inquired and the RRC reestablishment request message sent by UE in a switching state is sent; and if so, judging whether to perform reestablishment processing according to the target cell information in the RRC reestablishment request message and the pre-acquired target cell information. The source base station can not directly send RRC reestablishment rejection information to the UE, so that the disconnection rate of the UE in the network is reduced, and the user perception is improved.
Drawings
Fig. 1 is a flowchart illustrating that X2 handover occurs in a conventional network, and that UE initiates reestablishment rejection to a source base station with target base station information;
fig. 2 is a flowchart illustrating steps of an embodiment of a RRC reestablishment processing method according to the present application;
fig. 3 is a flowchart that is accepted when the X2 handover occurs when the UE initiates a reestablishment to the source base station with the target base station information in the embodiment of the present application;
fig. 4 is a block diagram of an embodiment of a RRC reestablishment processing apparatus for RRC connection establishment according to the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, a flowchart illustrating that a UE with target base station information initiates re-establishment to a source base station to be rejected when X2 handover occurs in an existing network is shown.
The scheme is described below:
message 1: a terminal reports a measurement report (MeasurementReport) message to a source base station;
message 2: the source base station receives a measurement report reported by the terminal, judges whether an adjacent cell meets a switching threshold, and sends a switching request (HandoverRequest) message to the target base station if the adjacent cell meets the switching threshold;
message 3: the target base station receives the switching request message sent by the source base station, judges whether the cell of the base station can be accepted, and sends a switching request confirmation (Handover RequestAcknowledgement) message to the source base station if the cell of the base station can be accepted;
and message 4: after receiving the switching request confirmation message sent by the target base station, the source base station sends a switching reconfiguration message (RRCConnectionReconfiguration) to the terminal;
and message 5: the source base station sends SNStatus Transfer information to the target base station to carry out SN number switching;
and message 6: the terminal sends a handover complete message (rrcconnectionreconfiguration complete) to the target base station, but the high level of the base station does not receive it;
message 7: a terminal initiates an RRC reestablishment request (RRCConnectionRelationRequest) message to a source base station, and the message carries information of a target base station, including PCI, C _ RNTI and shortMAC-I;
message 8: the high layer of the source base station considers that the user is not switched, so the source base station replies an RRC reestablishment rejection message (RRCConnectionReestalishment) to the terminal;
message 9: the source base station sends a reestablishment Indication (RLF Indication) message to the target base station.
According to the protocol, the following information needs to be set in the RRC reestablishment request message initiated by the UE:
1. a Radio Network Temporary identity (C-RNTI) (cell Radio Network Temporary identity) is set as a C-RNTI used in a source cell (in case of handover failure and removal failure from E-UTRA), or a C-RNTI used by a cell which is triggered to be reconstructed (in other cases);
2. setting a cell physical identity pci (phycellid) as a physical cell identity of a source cell (in case of handover failure and removal failure from E-UTRA), or triggering a physical cell identity of a reconstructed cell (in other cases);
3. the short message Authentication Code used for data Integrity of signaling messages is set to be the lower 16 bits of the calculated MAC-I.
In the existing network, after RRC handover fails, the UE may carry target cell information to initiate an RRC reestablishment request message to the source cell. The RRC reestablishment request message does not carry the source cell information specified by the protocol or the cell information where the reestablishment occurs. The source base station may directly send an RRC reestablishment rejection message to the UE.
In the embodiment of the application, when it is detected that target cell information is carried in an RRC reestablishment request message sent by a UE, whether to perform reestablishment processing is determined according to the target cell information in the RRC reestablishment request message and pre-acquired target cell information. The source base station does not directly send an RRC reestablishment rejection message to the UE.
Referring to fig. 2, a flowchart illustrating steps of an embodiment of a radio resource control RRC reestablishment processing method according to the present application is shown, and specifically, the method may include the following steps:
in the embodiment of the present application, when RRC handover fails, the source base station receives an RRC reestablishment request message sent by the UE.
and the source base station inquires whether the context of the UE exists or not, and if the context of the UE does not exist, the conventional reestablishment processing process is carried out, and an RRC reestablishment rejection message is sent to the UE.
If the context of the UE exists, step 103 is performed.
103, if the context of the terminal exists, judging whether the terminal is in an RRC switching process;
the source base station judges whether the UE is still in the RRC switching process. The specific judging method comprises the following steps: and judging whether the time after the source base station sends the switching reconfiguration message to the UE exceeds the set time length. And if the set duration is not exceeded, the UE is considered to be in the switching process. And if the set duration is exceeded, the UE is not considered to be in the switching process.
Step 104, if the terminal is in the switching process, judging whether the RRC reestablishment request message sent by the terminal carries target cell information;
and if the UE is still in the switching process, the source base station judges whether the RRC reestablishment request message sent by the UE carries the target cell information. Specifically, the source base station determines whether the RRC reestablishment request message includes the PCI of the target cell. And if the RRC reestablishment request message has the PCI of the target cell, determining whether the RRC reestablishment request message carries the target cell information.
And 105, if the target cell information is carried in the RRC reestablishment request message sent by the terminal, determining whether to reestablish the terminal according to the target cell information obtained in advance and the target cell information in the RRC reestablishment request message.
And if the RRC reestablishment carries the target cell information, the source base station judges whether to reestablish the terminal according to the target cell information acquired in advance and the target cell information in the RRC reestablishment request message.
The information of the target cell is obtained in advance, and is obtained from a handover request acknowledge message (handover request acknowledge) of the base station of the target cell.
Specifically, when the source base station receives a measurement report sent by the UE, the source base station determines whether the measurement result of each measured cell in the measurement report satisfies a handover condition (e.g., whether reference Signal Receiving power rsrp (reference Signal Receiving power) satisfies a preset handover threshold). And the source base station sends the switching request message to the user equipment.
And the source base station sends a switching cancellation message to other cells as long as receiving a switching request confirmation message returned by a cell meeting the switching requirement. I.e. the source base station takes the cell of the first response as the target cell. If no cell returns the switching request confirmation message, the switching processing is not carried out. The handover request acknowledgement message of the target cell carries target cell information.
In this embodiment of the present application, the target cell information includes: a radio network temporary identifier C-RNTI, a cell physical identifier PCI and a short message authentication code ShortMAC-I.
The step 105 may specifically include the following sub-steps:
a substep S11 of determining whether the C-RNTI and the PCI in the pre-acquired target cell information are the same as the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message;
and a substep S12, if the C-RNTI and the PCI in the pre-acquired target cell information are different from the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message, determining reestablishment rejection and sending an RRC reestablishment rejection message to the terminal.
A substep S13, if the C-RNTI and the PCI in the pre-obtained target cell information are the same as the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message, determining whether the short message authentication code ShortMAC-I in the pre-obtained target cell information is the same as the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message;
and a substep S14, if the short message authentication code ShortMAC-I in the pre-acquired target cell information is different from the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message, determining reestablishment rejection and sending an RRC reestablishment rejection message to the terminal.
And a substep S15, determining to perform reestablishment processing if the short message authentication code ShortMAC-I in the pre-acquired target cell information is the same as the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message.
That is, when the C-RNTI, the PCI and the ShortMAC-I in the RRC reestablishment request message sent by the UE are the same as the C-RNTI, the PCI and the ShortMAC-I which are obtained in advance from the handover request confirmation message of the target cell, the UE is reestablished.
In the embodiment of the application, a source base station acquires target cell information in advance, and judges whether an RRC reestablishment request message carries the target cell information when the context is successfully inquired and the RRC reestablishment request message sent by UE in a switching state is sent; and if so, judging whether to perform reestablishment processing according to the target cell information in the RRC reestablishment request message and the pre-acquired target cell information. The source base station can not directly send RRC reestablishment rejection information to the UE, the disconnection rate of the UE in the network is reduced, and the user perception is improved.
Hereinafter, the application examples will be further described with reference to an example. Fig. 3 is a flowchart illustrating that the UE is accepted when initiating the reestablishment to the source base station with the target base station information when the X2 handover occurs in the embodiment of the present application.
Message 1: a terminal reports a measurement report (MeasurementReport) message to a base station;
message 2: the source base station receives a measurement report reported by the terminal, judges whether an adjacent cell meets a switching threshold, and sends a switching request (HandoverRequest) message to the target base station if the adjacent cell meets the switching threshold;
message 3: the target base station receives the switching request message sent by the source base station, judges whether the cell of the base station can be accepted, and sends a switching request confirmation (Handover RequestAcknowledgement) message to the source base station if the cell of the base station can be accepted;
and message 4: after receiving the switching request confirmation message sent by the target base station, the source base station sends a switching reconfiguration message (RRCConnectionReconfiguration) to the terminal;
and message 5: the source base station sends SNStatus Transfer information to the target base station to carry out SN number switching;
and message 6: the terminal sends a handover complete message (rrcconnectionreconfiguration complete) to the target base station, but the high level of the base station does not receive it;
message 7: a terminal initiates an RRC reestablishment request message (RRCConnectionRelationRequest) to a source base station, and the RRCConnectionRelationRequest message carries information of a target base station, including PCI, C _ RNTI and shortMAC-I;
message 8: the source base station judges whether the terminal is in the conditions of a switching process and the like, and sends an RRC reestablishment message (RRCConnectionReestassignment) to the terminal;
message 9: the terminal sends RRC reestablishment completion (RRCConnectionblockcomplete) information to the source base station;
message 10: the base station receives the RRC reestablishment completion message and sends an RRC reconfiguration message (RRCConnectionReconfiguration) to the terminal;
message 11: the terminal sends an RRC reconfiguration complete (RRCConnectionReconfiguration complete) message to the base station;
message 12: the source base station sends a reestablishment Indication (RLF Indication) message to the target base station.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the embodiments are not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the embodiments. Further, those skilled in the art will also appreciate that the embodiments described in the specification are presently preferred and that no particular act is required of the embodiments of the application.
Referring to fig. 4, a block diagram of an embodiment of a radio resource control RRC reestablishment processing apparatus according to the present application is shown, and the apparatus specifically includes the following modules:
a reestablishment request receiving module 201, configured to receive a radio resource control RRC reestablishment request message sent by a terminal;
a query module 202, configured to query whether the context of the terminal exists;
a first determining module 203, configured to determine whether the terminal is in an RRC handover process if the terminal has a context of the terminal;
a second determining module 204, configured to determine whether an RRC reestablishment request message sent by the terminal carries target cell information if the terminal is in a handover process;
a third determining module 205, configured to determine whether to perform reestablishment processing for the terminal according to the pre-obtained target cell information and the target cell information in the RRC reestablishment request message if the RRC reestablishment request message sent by the terminal carries the target cell information.
In this embodiment, the apparatus may further include:
a target cell determining module, configured to determine a target cell for a measurement report sent by a terminal before receiving a radio resource control RRC reestablishment request message sent by the terminal;
a handover request sending module, configured to send a handover request message to a base station of the target cell;
a switching request confirmation receiving module, configured to receive a switching request confirmation message returned by the base station of the target cell; the handover request acknowledgement message includes target cell information.
In this embodiment of the present application, the target cell information includes: a radio network temporary identifier C-RNTI, a cell physical identifier PCI and a short message authentication code ShortMAC-I;
the third determining module 205 may include:
a first message judgment sub-module, configured to judge whether the C-RNTI and the PCI in the pre-acquired target cell information are the same as the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message;
a second message judgment sub-module, configured to judge whether a short message authentication code ShortMAC-I in the pre-acquired target cell information is the same as a short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message, if the C-RNTI and the PCI in the pre-acquired target cell information are the same as the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message;
and the first determining submodule is used for determining to reestablish the target cell information if the short message authentication code ShortMAC-I in the pre-acquired target cell information is the same as the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message.
In this embodiment of the application, the third determining module 205 may further include:
a second determining submodule, configured to determine that reestablishment is denied if the C-RNTI and the PCI in the pre-obtained target cell information are different from the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message;
and a third determining sub-module, configured to determine that the reestablishment is rejected if the short message authentication code ShortMAC-I in the pre-acquired target cell information is different from the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message.
In this embodiment of the application, the second determining module 204 may include:
and the PCI judgment submodule is used for judging whether the RRC reestablishment request message carries the PCI of the target cell.
In the embodiment of the application, a source base station acquires target cell information in advance, and judges whether an RRC reestablishment request message carries the target cell information when the context is successfully inquired and the RRC reestablishment request message sent by UE in a switching state is sent; and if so, judging whether to perform reestablishment processing according to the target cell information in the RRC reestablishment request message and the pre-acquired target cell information. The source base station can not directly send RRC reestablishment rejection information to the UE, the disconnection rate of the UE in the network is reduced, and the user perception is improved.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one of skill in the art, embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The foregoing describes in detail a radio resource control RRC reestablishment processing method and a radio resource control RRC reestablishment processing apparatus provided by the present application, and specific examples are applied herein to explain the principle and the implementation of the present application, and the description of the foregoing examples is only used to help understanding the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. A Radio Resource Control (RRC) reestablishment processing method is characterized by comprising the following steps:
receiving a Radio Resource Control (RRC) reestablishment request message sent by a terminal;
inquiring whether the terminal has the context;
if the context of the terminal exists, judging whether the terminal is in an RRC switching process;
if the terminal is in the switching process, judging whether an RRC reestablishment request message sent by the terminal carries target cell information or not;
if the target cell information is carried in the RRC reestablishment request message sent by the terminal, judging whether to reestablish the terminal according to the target cell information acquired in advance and the target cell information in the RRC reestablishment request message;
wherein the target cell information includes: a radio network temporary identifier C-RNTI, a cell physical identifier PCI and a short message authentication code shortMAC-I;
before receiving a Radio Resource Control (RRC) reestablishment request message sent by a terminal, determining a target cell aiming at a measurement report sent by the terminal;
sending a switching request message to a base station of the target cell;
receiving a switching request confirmation message returned by the base station of the target cell; the switching request confirmation message comprises target cell information;
the step of judging whether the terminal is in the RRC switching process comprises the following steps:
judging whether the time after the source base station sends the switching reconfiguration message to the terminal exceeds a preset time length or not;
if the preset duration is not exceeded, the terminal is in an RRC switching process;
and if the preset duration is exceeded, the terminal is not in the RRC switching process.
2. The method of claim 1, wherein:
the step of judging whether to perform reestablishment processing for the terminal according to the pre-acquired target cell information and the target cell information in the RRC reestablishment request message includes:
judging whether the C-RNTI and the PCI in the pre-acquired target cell information are the same as the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message;
if the C-RNTI and the PCI in the pre-acquired target cell information are the same as the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message, judging whether a short message authentication code ShortMAC-I in the pre-acquired target cell information is the same as the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message;
and if the short message authentication code ShortMAC-I in the pre-acquired target cell information is the same as the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message, determining to reestablish the target cell information.
3. The method according to claim 2, wherein the step of determining whether to perform the reestablishment process for the terminal according to the pre-acquired target cell information and the target cell information in the RRC reestablishment request message further comprises:
if the C-RNTI and the PCI in the pre-acquired target cell information are different from the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message, determining to refuse reestablishment;
and if the short message authentication code ShortMAC-I in the pre-acquired target cell information is different from the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message, determining that the reestablishment is rejected.
4. The method according to claim 1, wherein the step of determining whether the RRC reestablishment request message sent by the terminal carries target cell information comprises:
and judging whether the RRC reestablishment request message carries the PCI of the target cell.
5. A radio resource control RRC reestablishment processing apparatus, comprising:
a reestablishment request receiving module, configured to receive a radio resource control RRC reestablishment request message sent by the terminal;
the query module is used for querying whether the context of the terminal exists;
the first judging module is used for judging whether the terminal is in an RRC switching process if the context of the terminal exists;
a second determining module, configured to determine whether an RRC reestablishment request message sent by the terminal carries target cell information if the terminal is in a handover process;
a third determining module, configured to determine, if an RRC reestablishment request message sent by the terminal carries the target cell information, whether to perform reestablishment processing for the terminal according to pre-obtained target cell information and the target cell information in the RRC reestablishment request message;
wherein the target cell information includes: a radio network temporary identifier C-RNTI, a cell physical identifier PCI and a short message authentication code shortMAC-I;
a target cell determining module, configured to determine a target cell for a measurement report sent by a terminal before receiving a radio resource control RRC reestablishment request message sent by the terminal;
a handover request sending module, configured to send a handover request message to a base station of the target cell;
a switching request confirmation receiving module, configured to receive a switching request confirmation message returned by the base station of the target cell; the switching request confirmation message comprises target cell information;
the first judging module is further configured to judge whether a time after the source base station sends the handover reconfiguration message to the terminal exceeds a preset time duration; if the preset duration is not exceeded, the terminal is in an RRC switching process; and if the preset duration is exceeded, the terminal is not in the RRC switching process.
6. The apparatus of claim 5,
the third judging module comprises:
a first message judgment sub-module, configured to judge whether the C-RNTI and the PCI in the pre-acquired target cell information are the same as the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message;
a second message judgment sub-module, configured to judge whether a short message authentication code ShortMAC-I in the pre-acquired target cell information is the same as a short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message, if the C-RNTI and the PCI in the pre-acquired target cell information are the same as the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message;
and the first determining submodule is used for determining to reestablish the target cell information if the short message authentication code ShortMAC-I in the pre-acquired target cell information is the same as the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message.
7. The apparatus of claim 6, wherein the third determining module further comprises:
a second determining submodule, configured to determine that reestablishment is denied if the C-RNTI and the PCI in the pre-obtained target cell information are different from the C-RNTI and the PCI in the target cell information of the RRC reestablishment request message;
and a third determining sub-module, configured to determine that the reestablishment is rejected if the short message authentication code ShortMAC-I in the pre-acquired target cell information is different from the short message authentication code ShortMAC-I in the target cell information of the RRC reestablishment request message.
8. The apparatus of claim 5, wherein the second determining module comprises:
and the PCI judgment submodule is used for judging whether the RRC reestablishment request message carries the PCI of the target cell.
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| CN111385830B (en) * | 2018-12-29 | 2022-07-22 | 华为技术有限公司 | Communication method and device |
| CN112789889B (en) * | 2019-05-09 | 2023-11-14 | Oppo广东移动通信有限公司 | Method, equipment and storage medium for processing radio resource control message |
| CN112087755B (en) * | 2019-06-14 | 2022-06-14 | 华为技术有限公司 | Cell switching method, communication device and system |
| WO2021127981A1 (en) * | 2019-12-24 | 2021-07-01 | 华为技术有限公司 | Wireless communication method and wireless communication apparatus |
| CN114339925B (en) * | 2020-10-10 | 2023-12-26 | 大唐移动通信设备有限公司 | Switching method, switching device, terminal equipment, network equipment and storage medium |
| CN114615673B (en) * | 2022-03-10 | 2024-01-26 | 深圳市共进电子股份有限公司 | Automatic blind-complement capacity-expansion method and device, small base station system and storage medium |
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