CN114245484A - RRC connection recovery processing method and device, electronic equipment and storage medium - Google Patents

RRC connection recovery processing method and device, electronic equipment and storage medium Download PDF

Info

Publication number
CN114245484A
CN114245484A CN202010942209.5A CN202010942209A CN114245484A CN 114245484 A CN114245484 A CN 114245484A CN 202010942209 A CN202010942209 A CN 202010942209A CN 114245484 A CN114245484 A CN 114245484A
Authority
CN
China
Prior art keywords
cell
rrc connection
connection recovery
target cell
source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010942209.5A
Other languages
Chinese (zh)
Other versions
CN114245484B (en
Inventor
王鹏远
占亘熙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Datang Mobile Communications Equipment Co Ltd
Original Assignee
Datang Mobile Communications Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Datang Mobile Communications Equipment Co Ltd filed Critical Datang Mobile Communications Equipment Co Ltd
Priority to CN202010942209.5A priority Critical patent/CN114245484B/en
Publication of CN114245484A publication Critical patent/CN114245484A/en
Application granted granted Critical
Publication of CN114245484B publication Critical patent/CN114245484B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a processing method and device for RRC (radio resource control) connection recovery, electronic equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: determining a target cell according to a cell reselection criterion; judging whether the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold or not according to a preset field of the target cell; under the condition that the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold, judging whether the target cell is a source cell or not according to a cell identifier; and sending a first RRC connection recovery request to a source base station corresponding to the source cell under the condition that the target cell is the source cell or the signal strength of the source cell is greater than a preset strength threshold value. The invention can reduce signaling overhead and equipment power consumption of RRC connection recovery and improve processing efficiency.

Description

RRC connection recovery processing method and device, electronic equipment and storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a processing method and apparatus for RRC connection recovery, an electronic device, and a storage medium.
Background
In the fifth generation mobile communication system, in order to reduce inter-system signaling interaction caused by mobility and meet the requirements of low power consumption and large connection, a Radio Resource Control (RRC) state, that is, an RRC INACTIVE state (RRC _ INACTIVE state), is newly introduced. In the RRC _ INACTIVE state, the User Equipment (UE) can always maintain a CM connection (CM _ CONNECTED state) with the core Network, the Radio Access Network (RAN) side stores the context of the terminal, and the UE can quickly return to the RRC CONNECTED state (RRC _ CONNECTED state) when necessary. As the UE moves, when the signal quality of the current resident cell cannot meet the communication service requirement of the UE, the UE needs to perform cell reselection, even perform cell reselection across a base station, or perform cell reselection across a radio access network Notification Area (RNA). When the UE performs cell reselection, it needs to initiate a state transition process from RRC _ INACTIVE to RRC _ CONNECTED, that is, RRC connection recovery (RRC Resume), but in some extreme cases, for example, a coverage area is a densely populated cell group, when the UE performs RRC connection recovery (RRC Resume), jamming or even recovery failure often occurs, which affects normal performance of communication service of the UE.
In addition, as the network overlapping coverage of different base stations is increased in the fifth Generation mobile communication technology (5G, 5-Generation), in order to support multiple service scenarios, the specific configuration between stations, such as configuring multiple RNAs for the same base station group, etc., is more in the Long Term Evolution (LTE) time, and such a scenario that the cross network coverage area frequently spans the RNAs or the base stations perform RRC connection recovery is also likely to become common, so how to reduce the RRC connection recovery delay between stations, reduce the probability of falling back to RRC Setup (RRC Setup) or even RRC Reestablishment (RRC Reestablishment) in the RRC connection recovery process, and improve the success rate of RRC connection recovery, which is one of the problems that are worthy of research at present.
However, in the prior art, when performing RRC connection restoration processing, according to 38.300 in Technical Specification (TS) of the third generation Partnership Project (3 GPP), if inter-station and inter-RNA cell reselection occurs during RRC Resume, a Path Switch (Path Switch) procedure between the RAN side of the base station and the core network is followed; in addition, frequent inter-station cell reselection causes frequent data forwarding and path switching, multiple signaling interaction processes are required, signaling overhead and equipment power consumption are increased indirectly, meanwhile, the time delay of RRC connection recovery is increased, and the processing efficiency is reduced.
Disclosure of Invention
The invention provides a processing method and device for RRC connection recovery under Radio Resource Control (RRC), electronic equipment and a storage medium, and aims to solve the problems of high signal overhead and equipment power consumption and low processing efficiency of RRC connection recovery in the prior art.
According to a first aspect of the present invention, there is provided a processing method for RRC connection recovery, which is applied to a user equipment UE, and the method includes:
determining a target cell according to a cell reselection criterion;
judging whether the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold or not according to a preset field of the target cell, wherein the preset field is set by a target base station corresponding to the target cell according to the RRC connection recovery success rate of the target cell counted regularly;
under the condition that the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold, judging whether the target cell is a source cell or not according to a cell identifier;
and sending a first RRC connection recovery request to a source base station corresponding to the source cell under the condition that the target cell is the source cell or the signal strength of the source cell is greater than a preset strength threshold value.
According to a second aspect of the present invention, there is provided a processing method for RRC connection recovery, which is applied to a base station, and the method includes:
periodically counting the success rate of RRC connection recovery requests of the cells;
if the success rate of the RRC connection recovery request of the cell is less than or equal to a preset threshold, configuring a preset field for the cell;
receiving a first RRC connection recovery request sent by User Equipment (UE), wherein the first RRC connection recovery request is sent by the UE under the condition that the RRC connection recovery success rate of a target cell is smaller than or equal to a preset threshold, and the target cell is a source cell or the signal intensity of the source cell is larger than a preset intensity threshold.
According to a third aspect of the present invention, there is provided a processing apparatus for RRC connection recovery, applied to a user equipment UE, the apparatus including:
a first target cell determining module, configured to determine a target cell according to a cell reselection criterion;
a first recovery success rate determining module, configured to determine, according to a preset field of the target cell, whether an RRC connection recovery success rate of the target cell is less than or equal to a preset threshold, where the preset field is set by a target base station corresponding to the target cell according to an RRC connection recovery success rate of the target cell counted periodically;
a cell judgment module, configured to judge whether the target cell is a source cell according to a cell identifier when a success rate of RRC connection restoration of the target cell is less than or equal to a preset threshold;
a first recovery request sending module, configured to send a first RRC connection recovery request to a source base station corresponding to the source cell when the target cell is the source cell or a signal strength of the source cell is greater than a preset strength threshold.
According to a fourth aspect of the present invention, there is provided a processing apparatus for RRC connection recovery, which is applied to a base station, and includes:
the recovery success rate counting module is used for periodically counting the success rate of the RRC connection recovery request of the cell;
a field configuration module, configured to configure a preset field for the cell if a success rate of an RRC connection recovery request of the cell is less than or equal to a preset threshold;
a first RRC connection recovery request receiving module, configured to receive a first RRC connection recovery request sent by a user equipment UE, where the first RRC connection recovery request is sent by the UE when an RRC connection recovery success rate of a target cell is less than or equal to a preset threshold, and the target cell is a source cell or a signal strength of the source cell is greater than a preset strength threshold.
According to a fifth aspect of the present invention, there is provided an electronic apparatus comprising:
a processor, a memory and a computer program stored on the memory and executable on the processor, the processor implementing the aforementioned method when executing the program.
According to a sixth aspect of the invention, there is provided a readable storage medium having instructions which, when executed by a processor of an electronic device, enable the electronic device to perform the aforementioned method.
The invention provides a processing method, a device, electronic equipment and a storage medium for RRC connection recovery, wherein the method comprises the following steps: determining a target cell according to a cell reselection criterion; judging whether the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold or not according to a preset field of the target cell; under the condition that the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold, judging whether the target cell is a source cell or not according to a cell identifier; and sending a first RRC connection recovery request to a source base station corresponding to the source cell under the condition that the target cell is the source cell or the signal strength of the source cell is greater than a preset strength threshold value. The invention can control the UE to carry out RRC connection recovery in the source cell under the condition that the success rate of the RRC connection recovery of the target cell is less than or equal to the preset threshold, thereby reducing the signaling overhead and equipment power consumption of the RRC connection recovery and improving the processing efficiency.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a flowchart illustrating specific steps of a method for RRC connection recovery according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating specific steps of a method for handling RRC connection recovery according to a second embodiment of the present invention;
fig. 3 is a flowchart illustrating specific steps of a method for handling RRC connection recovery according to a third embodiment of the present invention;
fig. 4 is a flowchart illustrating specific steps of a processing method for RRC connection recovery according to a fourth embodiment of the present invention;
fig. 5 is a flowchart illustrating an inter-station RRC connection recovery according to a fourth embodiment of the present invention;
FIG. 6 is a flowchart of RRC connection recovery across RNA according to the fourth embodiment of the present invention;
fig. 7 is a block diagram of a processing apparatus for RRC connection recovery according to a fifth embodiment of the present invention;
fig. 8 is a block diagram of a processing apparatus for RRC connection recovery according to a sixth embodiment of the present invention;
fig. 9 is a block diagram of a processing apparatus for RRC connection recovery according to a seventh embodiment of the present invention;
fig. 10 is a block diagram of a processing apparatus for RRC connection recovery according to an eighth embodiment of the present invention;
fig. 11 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
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, 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.
Example one
Referring to fig. 1, a flowchart of specific steps of a processing method for RRC connection recovery applied to a user equipment UE according to an embodiment of the present invention is shown.
Step 101, determining a target cell according to a cell reselection criterion.
The invention provides a processing method for RRC connection recovery, which is used for reducing signaling overhead and equipment power consumption in the process of recovering UE from an RRC INACTIVE state (RRC _ Inactive state) to an RRC CONNECTED state (RRC _ CONNECTED state), and improving the processing efficiency of RRC connection recovery. Therefore, in the present invention, the UE is in RRC _ INACTIVE state. When the UE is in the RRC _ INACTIVE state, the UE already cuts off the connection of the radio resource with the previous serving cell, that is, the source cell in the present invention, and does not yet establish a connection with the next serving cell, that is, the target cell in the present invention, and the UE needs to determine the next camped cell through cell reselection, and performs RRC connection recovery in the selected camped cell.
And the UE determines a target cell in the adjacent cell of the source cell according to the cell reselection criterion. The neighboring cells include a source cell, an intra-station neighboring cell belonging to the same base station as the source cell, an inter-station neighboring cell belonging to a different base station from the source cell, and a neighboring cell spanning different radio access network Notification areas (RNA) from the source cell.
And step 102, judging whether the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold or not according to the preset field of the target cell.
The preset field is set by the target base station corresponding to the target cell according to the RRC connection recovery success rate of the target cell counted regularly.
The base station periodically counts the RRC connection recovery success rate of the cell, and configures the preset field of the cell when the RRC connection recovery success rate of the cell is less than or equal to a preset threshold.
Optionally, if the RRC connection recovery success rate of the cell is less than or equal to a preset threshold, the base station sets a preset field of the cell as a preset identifier; and if the preset field of the cell contains a preset identifier, determining that the RRC connection recovery success rate of the cell is less than or equal to a preset threshold.
In practical application, a newly added enumerated type field isresumesticalo of a non-critical extension field in a System message Block (SIB1, System Information Block1) may be used as a preset field, when the RRC connection recovery success rate of a cell is less than or equal to a preset threshold, the base station configures the isresumesticalo as true, and sends the configured field to a core network, the core network updates the System message according to the configuration of the base station, and when the UE performs RRC connection recovery, the core network obtains the RRC connection recovery success rate of a target cell by reading and analyzing an SIB1 in the System message.
And 103, under the condition that the success rate of the RRC connection restoration of the target cell is less than or equal to a preset threshold, judging whether the target cell is a source cell or not according to a cell identifier.
The cell identifier is a unique identity of a cell, and specifically may be a Physical Cell Identifier (PCI).
Judging whether the target cell and the source cell are the same cell or not according to the first cell identifier of the target cell and the second cell identifier of the source cell; and if the first cell identifier is consistent with the second cell identifier, determining that the target cell is the source cell.
In combination with the foregoing, the UE may determine whether the RRC connection restoration success rate of the target cell is less than or equal to a preset threshold through a preset field of the target cell. When the success rate of the RRC connection recovery of the target cell is less than or equal to the preset threshold, it indicates that if the UE continues to perform the RRC connection recovery in the target cell, a high probability of the recovery failure may occur, and if the target cell is not the source cell, the UE needs to switch from the source cell to the target cell, or even cross base stations and RNA, and if the RRC connection recovery fails after the UE switches to the target cell, the UE needs to continue to perform cell reselection, reselect the target cell and perform the RRC connection recovery until the recovery is successful, which may undoubtedly result in frequent data transmission and path switching, increase signaling overhead and device power consumption, and increase the time delay of the RRC connection recovery.
Therefore, in the embodiment of the present invention, when the RRC connection recovery success rate of the target cell is less than or equal to the preset threshold, first, it is determined whether the target cell is the source cell, and if the target cell is exactly the source cell, the RRC connection recovery may be continuously performed in the source cell.
And step 104, sending a first RRC connection recovery request to a source base station corresponding to the source cell when the target cell is the source cell or the signal strength of the source cell is greater than a preset strength threshold.
Wherein the Signal strength of the source cell includes a Reference Signal Receiving Power (RSRP) of the source cell measured by the UE.
In combination with the foregoing, when the success rate of RRC connection recovery of the target cell is less than or equal to the preset threshold, if the target cell is exactly the source cell, even if the recovery fails, the recovery delay, signaling overhead, and device power consumption will not be greatly affected, so that RRC connection recovery can be performed in the source cell.
Or, if the signal strength of the source cell is greater than the preset strength threshold at this time, which indicates that the current signal quality of the source cell is better, the probability of success of RRC connection recovery in the source cell is still greater, so that the UE may perform RRC connection recovery in the source cell if the RRC connection recovery success rate of the target cell is less than or equal to the preset threshold and if the signal strength of the source cell is greater than the preset threshold.
That is to say, when the target cell is the source cell, or the signal strength of the source cell is greater than the preset strength threshold, the UE may perform RRC connection recovery in the source cell, and therefore, in both cases, the UE sends the first RRC connection recovery request to the source base station corresponding to the source cell, so as to start the RRC connection recovery procedure in the source cell.
In summary, in the embodiments of the present invention, after the UE determines the target cell, the RRC connection recovery success rate of the target cell is determined in advance, and when the RRC connection recovery success rate of the target cell is less than or equal to the preset threshold, and when the target cell is the source cell or the signal strength of the source cell is greater than the preset strength threshold, the UE is controlled to perform RRC connection recovery in the source cell, so that signaling overhead and device power consumption for RRC connection recovery are reduced, and the processing efficiency is improved.
Example two
Referring to fig. 2, a flowchart of specific steps of a processing method for RRC connection recovery applied to a user equipment UE according to a second embodiment of the present invention is shown.
Step 201, determining a target cell according to a cell reselection criterion.
And the UE determines a target cell in the adjacent cell of the source cell according to the cell reselection criterion. The neighboring cell may be an intra-station neighboring cell belonging to the same base station, an inter-station neighboring cell belonging to different base stations, or a neighboring cell spanning different radio access network notification Regions (RNA).
Optionally, the step of determining a target cell according to a cell reselection criterion includes:
acquiring a first carrier frequency and a first carrier frequency priority of the source cell and a second carrier frequency priority of the adjacent cell; if the first carrier frequency is equal to the second carrier frequency or the priority of the first carrier frequency is equal to the priority of the second carrier frequency, calculating the first signal intensity of the source cell and the second signal intensity of the adjacent cell; and if the first signal strength is smaller than the second signal strength, determining the adjacent cell as a target cell meeting a cell reselection criterion.
Assuming that Rs is the first signal strength of the source cell and Rn is the second signal strength of the neighboring cell, in practical application, Rs may be the RSRP value Q of the source cell measured by the UE in the cell reselection processmeans,sHysteresis Q of the source cellhystA reception level offset Q of a minimum Reference Signal Reception Quality (RSRQ) required by the UE in a cell reselection processoffsettempIndicating that Rn can be measured by UE in the cell reselection process to obtain the Reference Signal Received Power (RSRP) value Q of the neighboring cellmeans,nCell offset Q of neighboring cellsoffsetMinimum Reference Signal Received Quality (RSRQ) required by UE in cell reselection processoffsettempSpecifically, the following is shown:
Rs＝Qmeans,s+Qhyst-Qoffsettemp (1)
Rn＝Qmeans,n-Qoffset-Qoffsettemp (2)
and when the first carrier frequency of the source cell is equal to the second carrier frequency of the adjacent cell or the priority of the first carrier frequency of the source cell is equal to the priority of the second carrier frequency of the adjacent cell, if Rs < Rn is met, determining the adjacent cell as a target cell meeting the cell reselection criterion.
Optionally, if the first carrier frequency priority is greater than the second carrier frequency priority, determining whether the residence time of the UE in the source cell exceeds a preset time; if the residence time of the UE in the source cell exceeds the preset time, determining a first receiving level and a first receiving signal quality of the source cell and a second receiving level and a second receiving signal quality of the adjacent cell; if the first receiving level is smaller than a first low-frequency reselection threshold and the second receiving level is larger than a second low-frequency reselection threshold, determining that the neighboring cell is a target cell meeting a cell reselection criterion; or, if the first received signal quality is less than a third low frequency reselection threshold and the second received signal quality is greater than a fourth low frequency reselection threshold, determining that the neighboring cell is a target cell meeting a cell reselection criterion.
Suppose Srxlev,sIs a first reception level, S, of the source cellqual,sFirst received signal quality, S, for the source cellrxlev,nIs the second reception level, S, of the neighbouring cellqual,nFor the second received signal quality of the neighbouring cell, ThreshServing,LowPIs firstLow frequency reselection threshold, ThreshX,LowPIs the second low frequency reselection threshold, ThreshServing,LowQIs the third low frequency reselection threshold, ThreshX,LowQIs the fourth low frequency reselection threshold.
The reception level of a cell can be expressed as:
Srxlev＝Qrxlevmeas-(Qrxlevmin+Qrxlevminoffset)-Pcompensation-Qoffsettemp (3)
wherein Q isrxlevmeasThe value of the cell reception level measured for the UE is typically expressed as the RSRP value, Q, of the cell measured by the UErxlevminMinimum number reception level required for a cell, configured by the base station, indicated to the UE in SIB1, QrxlevminoffsetRelative to QrxlevminIs configured by the base station, indicated to the UE in SIB1, PcompensationDifference value between maximum transmitting power set by system and maximum output power determined according to terminal grade when UE is accessed into the cell, QoffsettempA receive level offset of a minimum Reference Signal Received Quality (RSRQ) required by the UE during cell reselection.
And (4) replacing each parameter value in the formula (3) with a parameter value corresponding to the source cell and the adjacent cell respectively to obtain a first receiving level of the source cell and a second receiving level of the adjacent cell.
The received signal quality of a cell may be expressed as:
Squal＝Qqualmeas-(Qqualmin+Qqualminoffset)-Qoffsettemp (4)
wherein Q isqualmeasThe measured cell received signal quality for a UE is typically expressed in terms of the UE's measured cell RSRQ value, QqualminMinimum received signal quality required for a cell, configured by the base station, indicated to the UE, Q, in SIB1qualminoffsetRelative to QqualminIs configured by the base station, indicated to the UE in SIB1, QoffsettempA receive level offset of a minimum Reference Signal Received Quality (RSRQ) required by the UE during cell reselection.
And (4) replacing each parameter value in the formula (3) with a parameter value corresponding to the source cell and the adjacent cell respectively to obtain the first received signal quality of the source cell and the second received signal quality of the adjacent cell.
Optionally, if the first carrier frequency priority is smaller than the second carrier frequency priority, determining whether the residence time of the UE in the source cell exceeds a preset time; if the residence time of the UE in the source cell exceeds the preset time, determining a second receiving level and a second receiving signal quality of the neighboring cell; if the second receiving level is greater than a first high-frequency reselection threshold, determining the adjacent cell as a target cell meeting a cell reselection criterion; or, if the second received signal quality is greater than a second high-frequency reselection threshold, determining that the neighboring cell is a target cell meeting a cell reselection criterion.
Specifically, the second receiving level and the second receiving signal quality of the neighboring cell may be calculated by using the above formula (3) and formula (4), respectively.
Step 202, according to the preset field of the target cell, judging whether the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold.
The preset field is set by the target base station corresponding to the target cell according to the RRC connection recovery success rate of the target cell counted regularly.
This step can refer to step 102, which is not described herein.
Step 203, under the condition that the RRC connection restoration success rate of the target cell is less than or equal to a preset threshold, determining whether the target cell is a source cell according to a cell identifier.
This step can refer to step 103, which is not described herein.
Optionally, reading a first cell identifier of the target cell from a system message; comparing the first cell identifier with a stored second cell identifier of a source cell; determining that the target cell is the source cell if the first cell identifier is consistent with the second cell identifier; determining that the target cell is not the source cell if the first cell identifier is not consistent with the second cell identifier.
Step 204, when the target cell is the source cell or the signal strength of the source cell is greater than a preset strength threshold, sending a first RRC connection recovery request to a source base station corresponding to the source cell.
The signal strength of the source cell comprises Reference Signal Received Power (RSRP) of the source cell measured by the UE.
This step can refer to step 104, which is not described herein.
Step 205, re-determining the target cell according to the cell reselection criterion when the target cell is not the source cell and the signal strength of the source cell is less than or equal to a preset strength threshold.
In combination with the foregoing, at this time, the RRC connection recovery success rate of the target cell is less than or equal to the preset threshold, that is, if the UE performs RRC connection recovery in the target cell, it is likely that the UE fails to recover. In this case, if the target cell is not the source cell, if RRC connection recovery is selected to be performed in the target cell, the UE needs to switch from the source cell to the target cell, even cross base stations and cross RNAs are needed, if RRC connection recovery fails after the UE is switched to the target cell, cell reselection needs to be continued, and the target cell is reselected and RRC connection recovery is performed until recovery succeeds, which undoubtedly results in frequent data transmission and path switching, increases signaling overhead and device power consumption, and also increases time delay of RRC connection recovery. The signal strength of the source cell is less than or equal to the preset strength threshold, that is, the UE is likely to fail to recover the RRC connection in the source cell, and thus, it is not suitable to continue camping in the source cell. Therefore, in the case that the target cell is not the source cell and the signal strength of the source cell is less than or equal to the preset strength threshold, the UE needs to re-determine the target cell according to the cell reselection criterion and then re-execute step 202.
Step 206, sending a second RRC connection recovery request to the target base station corresponding to the target cell when the RRC connection recovery success rate of the target cell is greater than a preset threshold.
When the success rate of the RRC connection recovery of the target cell is greater than the preset threshold, the UE performs the RRC connection recovery in the target cell, the recovery success rate is high, and the frequent cell reselection generally does not occur, so that frequent data transmission and path switching are not caused, and the recovery delay, signaling overhead and device power consumption are not greatly affected, so that the RRC connection recovery in the target cell can be performed. And the UE starts the RRC connection recovery process in the target cell by sending a second RRC connection recovery request to the target base station corresponding to the target cell.
In summary, in the embodiments of the present invention, after the UE determines the target cell, the RRC connection recovery success rate of the target cell is determined in advance, and when the RRC connection recovery success rate of the target cell is less than or equal to the preset threshold, and when the target cell is the source cell or the signal strength of the source cell is greater than the preset strength threshold, the UE is controlled to perform RRC connection recovery in the source cell, so that signaling overhead and device power consumption for RRC connection recovery are reduced, and the processing efficiency is improved.
EXAMPLE III
Referring to fig. 3, a flowchart of specific steps of a processing method for RRC connection recovery applied to a base station according to a third embodiment of the present invention is shown.
Step 301, periodically counting the success rate of the RRC connection recovery request of the cell.
The base station may periodically count the success rate of RRC connection recovery of the cell, and specifically, may count the total number of times of RRC connection recovery performed by all UEs in the cell within a preset time and the number of times of actual successful recovery, so as to determine the success rate of RRC connection recovery of the cell within the preset time.
For example, the preset time is 60 minutes, and the preset threshold PSuc is 50%. Counting the total times of all the UE in the cell trying to recover the RRC connection within 60 minutes to be 100 times, wherein the total times fail for 50 times, namely the actual success rate of the state transition from RRC _ INACTIVE to RRC _ CONNECTED of all the UE in the cell within 60 minutes is less than or equal to PSuc, and judging that the cell is the cell with low success probability of the RRC connection recovery; on the contrary, if the failure times of the RRC _ INACTIVE to RRC _ CONNECTED state transition within 60 minutes do not reach 50 times and the actual success rate is greater than PSuc, it is determined that the cell is not a cell with a low probability of success of RRC connection recovery.
Step 302, if the success rate of the RRC connection restoration request of the cell is less than or equal to a preset threshold, configuring a preset field for the cell.
Optionally, if the RRC connection recovery success rate of the cell is less than or equal to a preset threshold, the base station sets a preset field of the cell as a preset identifier; and if the preset field of the cell contains a preset identifier, determining that the RRC connection recovery success rate of the cell is less than or equal to a preset threshold.
In practical application, an enumerationtype field isresuuccesssratioow newly added to a non-critical extension (nonCriticalExtension) field in SIB1 may be used as a preset field, when the RRC connection recovery success rate of a cell is less than or equal to a preset threshold, a base station configures isresuuccesssroow as true, and sends the configured field to a core network, the core network updates a system message according to the configuration of the base station, and when the UE performs RRC connection recovery, the SIB1 in the system message is read and analyzed to obtain the RRC connection recovery success rate of a target cell.
Step 303, receiving a first RRC connection recovery request sent by the user equipment UE.
The first RRC connection recovery request is sent by the UE under the condition that the RRC connection recovery success rate of a target cell is smaller than or equal to a preset threshold, and the target cell is a source cell or the signal intensity of the source cell is larger than a preset intensity threshold.
When the success rate of the RRC connection recovery of the target cell is less than or equal to the preset threshold, it indicates that if the UE continues to perform the RRC connection recovery in the target cell, a high probability of the recovery failure may occur, and if the target cell is not the source cell, the UE needs to switch from the source cell to the target cell, or even cross base stations and RNA, and if the RRC connection recovery fails after the UE switches to the target cell, the UE needs to continue to perform cell reselection, reselect the target cell and perform the RRC connection recovery until the recovery is successful, which may undoubtedly result in frequent data transmission and path switching, increase signaling overhead and device power consumption, and increase the time delay of the RRC connection recovery.
Therefore, in the embodiment of the present invention, when the RRC connection recovery success rate of the target cell is less than or equal to the preset threshold, first, it is determined whether the target cell is the source cell, and if the target cell is exactly the source cell, the RRC connection recovery may be continuously performed in the source cell.
Or, if the signal strength of the source cell is greater than the preset strength threshold at this time, which indicates that the current signal quality of the source cell is better, the probability of success of RRC connection recovery in the source cell is still greater, so that the UE may perform RRC connection recovery in the source cell if the RRC connection recovery success rate of the target cell is less than or equal to the preset threshold and if the signal strength of the source cell is greater than the preset threshold.
That is to say, in the embodiment of the present invention, when the target cell is the source cell, or when the signal strength of the source cell is greater than the preset strength threshold, the UE may perform RRC connection recovery in the source cell, so that the UE may send the first RRC connection recovery request to the source base station corresponding to the source cell under the two conditions, and after receiving the first RRC connection recovery request sent by the UE, the base station controls the UE to perform RRC connection recovery in the source cell according to the stored context data of the UE.
Optionally, the signal strength of the source cell includes reference signal received power, RSRP, of the source cell measured by the UE.
In summary, in the embodiment of the present invention, the base station counts the RRC connection recovery success rate of the cell at regular time, and configuring a preset field for the cell when the success rate of the RRC connection recovery request of the cell is less than or equal to a preset threshold, so that when the UE selects the resident cell for RRC connection recovery, the UE can obtain the RRC connection recovery success rate of the target cell by reading the preset field, thereby determining an appropriate recovery strategy according to the RRC connection recovery success rate of the target cell, and, when the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold and the target cell is a source cell or the signal intensity of the source cell is greater than a preset intensity threshold, the base station receives a first RRC connection recovery request sent by the UE, therefore, the UE is controlled to perform RRC connection recovery in the source cell, signaling overhead and equipment power consumption of the RRC connection recovery are reduced, and processing efficiency is improved.
Example four
Referring to fig. 4, a flowchart of specific steps of a processing method for RRC connection recovery applied to a base station according to a fourth embodiment of the present invention is shown.
Step 401, periodically counting the success rate of the RRC connection recovery request of the cell.
This step can refer to step 301, which is not described herein.
Step 402, if the success rate of the RRC connection restoration request of the cell is less than or equal to a preset threshold, configuring a preset field for the cell.
This step can refer to step 302, and is not described herein.
Step 403, receiving a first RRC connection recovery request sent by the user equipment UE.
The first RRC connection recovery request is sent by the UE under the condition that the RRC connection recovery success rate of a target cell is smaller than or equal to a preset threshold, and the target cell is a source cell or the signal intensity of the source cell is larger than a preset intensity threshold.
This step can refer to step 303, which is not described herein.
Optionally, the signal strength of the source cell includes reference signal received power, RSRP, of the source cell measured by the UE.
Step 404, controlling the UE to perform RRC connection recovery in the source cell according to the stored context request data of the UE.
In combination with the foregoing, in the embodiment of the present invention, when the target cell is the source cell, or when the signal strength of the source cell is greater than the preset strength threshold, the UE performs RRC connection recovery in the source cell, so that the UE sends the first RRC connection recovery request to the source base station corresponding to the source cell under the two conditions. That is, if the base station receives the first RRC connection recovery request, it may be determined that the base station is the source base station, and the source base station stores the context request data of the UE, so that the UE may be directly controlled to perform RRC connection recovery in the source cell according to the stored context request data.
Optionally, the first RRC connection recovery request carries a UE identity allocated to the UE by the source base station; analyzing the identity information of the source base station according to the UE identification; judging whether the base station receiving the RRC connection recovery request is a source base station or not according to the identity information; and if the base station is a source base station, controlling the UE to perform RRC connection recovery in a source cell according to the stored context request data of the UE.
Step 405, receiving a second RRC connection recovery request sent by the UE.
And the second RRC connection recovery request is sent by the UE under the condition that the RRC connection recovery success rate of the target cell is greater than a preset threshold.
When the success rate of the RRC connection recovery of the target cell is greater than the preset threshold, the UE performs the RRC connection recovery in the target cell, the recovery success rate is high, and the frequent cell reselection generally does not occur, so that frequent data transmission and path switching are not caused, and the recovery delay, signaling overhead and device power consumption are not greatly affected, so that the RRC connection recovery in the target cell can be performed.
In the embodiment of the present invention, when the RRC connection recovery success rate of the target cell is greater than the preset threshold, the UE sends a second RRC connection recovery request to the target base station corresponding to the target cell, and after receiving the second RRC connection recovery request sent by the UE, the base station starts to perform related processing of RRC connection recovery, for example, obtaining context request data of the UE from the source base station, and controlling the UE to perform RRC connection recovery in the target cell according to the obtained context request data.
Step 406, the second RRC connection recovery request carries a UE identifier allocated to the UE by a source base station, and determines whether the base station is the source base station according to the UE identifier.
Optionally, the identity information of the source base station is analyzed according to the UE identity; and judging whether the target base station is the source base station or not according to the identity information.
In the embodiment of the present invention, when the UE determines the target cell according to the cell reselection criterion, the target cell is determined in the neighboring cells of the source cell, where the neighboring cells include the source cell, an intra-station neighboring cell that belongs to the same base station as the source cell, an inter-station neighboring cell that belongs to a different base station from the source cell, and a neighboring cell that spans a different radio access network Notification Area (RNA) from the source cell. Therefore, the target cell and the source cell in the embodiment of the present invention may belong to different base stations.
When the base station receives an RRC connection recovery request sent by the UE, the base station needs to analyze identity information of the source base station according to a UE identifier carried in the RRC connection recovery request, and then determines whether the base station receiving the RRC connection recovery request is the source base station according to the identity information.
Step 407, in a case that the base station is not the source base station, determining whether the current RRC connection restoration success rate of the target cell is less than or equal to a preset threshold.
Because the signal quality of the cell changes continuously with the change of the resource load, the actual RRC connection recovery success rate of the cell also changes dynamically, when the base station receiving the RRC connection request sent by the UE is not the source base station, if the UE performs RRC connection recovery in the target cell, processes such as inter-station cell switching and inter-station signaling transmission need to be performed, and if the current RRC connection recovery success rate of the target cell is greater than or equal to the preset threshold after the UE is switched to the target cell, the RRC recovery is likely to fail, and then the UE needs to reselect the resident cell to perform RRC connection recovery, which may cause frequent data transmission and path switching, increase signaling overhead and device power consumption, and increase the time delay of RRC connection recovery.
Therefore, in the embodiment of the present invention, after receiving the RRC connection request sent by the UE, the base station further determines whether the current RRC connection recovery success rate of the target cell is less than or equal to the preset threshold under the condition that the base station is not the source base station, so as to avoid that the RRC connection recovery success rate of the target cell changes to affect the RRC connection recovery result.
Step 408, if the current RRC connection restoration success rate of the target cell is less than or equal to a preset threshold, sending an RRC release message to the UE.
Wherein the RRC release message includes a redirection carrier signal of the source cell, so that the UE performs RRC connection recovery in the source cell according to the redirection carrier signal.
In combination with the foregoing, since the base station that receives the RRC connection recovery request is not the source base station, and when the current RRC connection recovery success rate of the target cell is less than or equal to the preset threshold, if the UE continues to perform RRC connection recovery in the target cell, it is likely that recovery fails, frequent data transmission and path switching, increase signaling overhead and device power consumption, and also increase time delay of RRC connection recovery, therefore, in the embodiment of the present invention, when the base station that receives the RRC connection recovery request is not the source base station, and the current RRC connection recovery success rate of the target cell is less than or equal to the preset threshold, the UE sends an RRC release message to the UE, so that the UE performs RRC connection recovery in the source cell according to the redirected carrier signal carried in the RRC release message, thereby avoiding frequent data transmission and path switching, reducing signaling overhead and device power consumption, and also reducing time delay of RRC connection recovery, the processing efficiency of RRC connection recovery is improved.
Step 409, if the current RRC connection restoration success rate of the target cell is greater than a preset threshold, querying the source base station in a preset neighbor base station table according to the UE identity.
Step 410, sending a UE context request message to the source base station.
Step 411, receiving context request data of the UE provided by the source base station.
Step 412, controlling the UE to perform RRC connection recovery in the target cell according to the context request data.
If the current success rate of the RRC connection recovery of the target cell is greater than the preset threshold, the UE performs the RRC connection recovery in the target cell, the recovery success rate is high, and the frequent cell reselection generally does not occur, so that frequent data transmission and path switching are not caused, and the recovery delay, signaling overhead and device power consumption are not greatly affected, so that the RRC connection recovery can be performed in the target cell.
The base station receiving the RRC request is not the source base station, so that the RRC connection recovery process between the stations needs to be started, the base station needs to request the context request data of the UE from the source base station, and then the UE is controlled to perform RRC connection recovery in the target cell according to the acquired context request data.
Referring to fig. 5, a flowchart for recovering an inter-station RRC connection according to an embodiment of the present invention is shown. After determining the target cell according to the foregoing steps, the UE sends an RRC connection recovery request RRC Resum eRequest to a target base station (i.e., the base station gNB in fig. 5) corresponding to the target cell, and starts an inter-station RRC recovery procedure. When the UE sends an RRC connection recovery Request, the UE is in an RRC _ INACTIVE state and a CM-CONNECTED state, after receiving the RRC recovery Request sent by the UE, the gNB sends a UE CONTEXT Request message RETRIEVE UE CONTEXT REQUEST to a source base station (namely a Last Serving base station Last Serving gNB) and REQUESTs the source base station (Last Serving gNB) to provide CONTEXT Request data of the UE; after receiving RETRIEVE UE CONTEXT REQUEST, the Last Serving gNB sends a RETRIEVE UE CONTEXT RESPONSE message to the gNB and provides CONTEXT REQUEST data of the UE; the gNB controls the UE to perform RRC connection in the target cell to recover RRC Resume according to the received context request data; after RRC Resume is executed, the UE is in an RRC _ CONNECTED state and a CM-CONNECTED state, and an RRC Resume Complete message is sent to the gNB to inform the gNBRRC connection recovery completion; if the user data cached in the Last Serving gNB is to be prevented from being lost, the gNB sends a forwarding ADDRESS Xn-ADDRESS INDICATION to the Last Serving gNB so as to enable the Last Serving gNB to forward the cached user data; after receiving the RRC resource Complete message sent by the UE, the gNB needs to send a path switch REQUEST message PATH SWITCH REQUEST to an Access and Mobility Management Function (AMF) of the Core network to trigger Last Serving gNB to release the UE resource; after receiving a path switch REQUEST RESPONSE message PATH SWITCH REQUEST RESPONSE returned by the AMF, the gNB sends a UE resource RELEASE message UE CONTEXT RELEASE to the UE, and triggers Last Serving gNB to RELEASE the UE resource, so that the whole inter-station RRC connection recovery process is completed.
In addition to inter-station RRC connection recovery, there may also be RRC connection recovery across RNA. Referring to fig. 6, a cross-RNA RRC connection recovery flow chart provided by an embodiment of the present invention is shown. The difference is that when the RNA is crossed, an RRC connection recovery Request RRC Resume sent by the UE carries RNA update identification RNA Updata, and after the gNB receives a RETRIEVE UE CONTEXT RESPONSE message returned by Last Serving gNB, the UE can be moved to an RRC _ CONNECTED state, or sent back to an RRC _ INACTIVE state, or sent to an RRC _ IDLE; and, after AMF returns path switch REQUEST RESPONSE message PATH SWITCH REQUEST RESPONSE to gNB, gNB needs to send RRC Release Suspend Indication message RRC Release Suspend Indication to UE.
In general, after receiving the RRC connection recovery request, the target base station further determines whether to cross the RNA when the target base station is not the source base station, so as to determine whether to initiate the inter-station RRC connection recovery procedure or the cross-RNA RRC connection recovery procedure.
In summary, in the embodiment of the present invention, the base station counts the RRC connection recovery success rate of the cell at regular time, and configuring a preset field for the cell when the success rate of the RRC connection recovery request of the cell is less than or equal to a preset threshold, so that when the UE selects the resident cell for RRC connection recovery, the UE can obtain the RRC connection recovery success rate of the target cell by reading the preset field, thereby determining an appropriate recovery strategy according to the RRC connection recovery success rate of the target cell, and, when the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold and the target cell is a source cell or the signal intensity of the source cell is greater than a preset intensity threshold, the base station receives a first RRC connection recovery request sent by the UE, therefore, the UE is controlled to perform RRC connection recovery in the source cell, signaling overhead and equipment power consumption of the RRC connection recovery are reduced, and processing efficiency is improved.
In addition, in the embodiment of the present invention, after receiving the RRC connection request sent by the UE, the base station further determines whether the current RRC connection recovery success rate of the target cell is less than or equal to a preset threshold under the condition that the base station is not the source base station, so as to avoid that the RRC connection recovery success rate of the target cell changes to affect the RRC connection recovery result.
EXAMPLE five
Referring to fig. 7, a structural diagram of a processing apparatus for RRC connection recovery in radio resource control according to a fifth embodiment of the present invention is shown, and is applied to a user equipment UE, and specifically includes:
a first target cell determining module 501, configured to determine a target cell according to a cell reselection criterion.
A first recovery success rate determining module 502, configured to determine, according to the preset field of the target cell, whether the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold.
The preset field is set by the target base station corresponding to the target cell according to the RRC connection recovery success rate of the target cell counted regularly.
A cell determining module 503, configured to determine whether the target cell is a source cell according to a cell identifier when the RRC connection restoration success rate of the target cell is less than or equal to a preset threshold.
A first recovery request sending module 504, configured to send a first RRC connection recovery request to a source base station corresponding to the source cell when the target cell is the source cell or a signal strength of the source cell is greater than a preset strength threshold.
The signal strength of the source cell comprises Reference Signal Received Power (RSRP) of the source cell measured by the UE.
The fifth embodiment is a corresponding apparatus embodiment to the first embodiment, and the detailed information may refer to the detailed description of the first embodiment, which is not described herein again.
EXAMPLE six
Referring to fig. 8, a structural diagram of a processing apparatus for RRC connection recovery in radio resource control according to a sixth embodiment of the present invention is shown, and is applied to a user equipment UE, and specifically includes:
a first target cell determining module 601, configured to determine a target cell according to a cell reselection criterion.
Optionally, the first target cell determining module 601 includes:
a carrier frequency obtaining sub-module, configured to obtain a first carrier frequency and a first carrier frequency priority of the source cell and a second carrier frequency priority of an adjacent cell;
a signal strength calculation sub-module, configured to calculate a first signal strength of the source cell and a second signal strength of the neighboring cell if the first carrier frequency is equal to the second carrier frequency, or the priority of the first carrier frequency is equal to the priority of the second carrier frequency;
a first target cell determining submodule, configured to determine that the neighboring cell is a target cell that satisfies a cell reselection criterion if the first signal strength is smaller than the second signal strength.
Optionally, the first target cell determining module 601 further includes:
a first residence time judgment sub-module, configured to judge whether the residence time of the UE in the source cell exceeds a preset time if the first carrier frequency priority is greater than the second carrier frequency priority;
a first determining sub-module, configured to determine a first receiving level and a first receiving signal quality of the source cell, and a second receiving level and a second receiving signal quality of the neighboring cell, if the residence time of the UE in the source cell exceeds a preset time;
a second target cell determining submodule, configured to determine that the neighboring cell is a target cell that satisfies a cell reselection criterion if the first reception level is less than a first low-frequency reselection threshold and the second reception level is greater than a second low-frequency reselection threshold; alternatively, the first and second electrodes may be,
and a third target cell determining submodule, configured to determine that the neighboring cell is a target cell that satisfies a cell reselection criterion if the first received signal quality is less than a third low-frequency reselection threshold and the second received signal quality is greater than a fourth low-frequency reselection threshold.
Optionally, the first target cell determining module 601 further includes:
a second residence time judgment sub-module, configured to judge whether the residence time of the UE in the source cell exceeds a preset time if the first carrier frequency priority is less than the second carrier frequency priority;
a second determining submodule, configured to determine a second receiving level and a second received signal quality of the neighboring cell if the residence time of the UE in the source cell exceeds a preset time;
a fourth target cell determining submodule, configured to determine, if the second reception level is greater than the first high-frequency reselection threshold, that the neighboring cell is a target cell that meets a cell reselection criterion; alternatively, the first and second electrodes may be,
and a fifth target cell determining submodule, configured to determine that the neighboring cell is the target cell meeting the cell reselection criterion if the second received signal quality is greater than a second high-frequency reselection threshold.
A first recovery success rate determining module 602, configured to determine, according to the preset field of the target cell, whether the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold.
The preset field is set by the target base station corresponding to the target cell according to the RRC connection recovery success rate of the target cell counted regularly.
A cell determining module 603, configured to determine whether the target cell is a source cell according to a cell identifier when the RRC connection restoration success rate of the target cell is less than or equal to a preset threshold.
Optionally, the cell determining module includes:
a cell identifier obtaining submodule for reading a first cell identifier of the target cell from a system message;
a cell identifier comparison sub-module for comparing the first cell identifier with a stored second cell identifier of a source cell;
a first cell determining submodule, configured to determine that the target cell is the source cell if the first cell identifier is consistent with the second cell identifier;
and a second cell determining sub-module, configured to determine that the target cell is not the source cell if the first cell identifier is inconsistent with the second cell identifier.
A first recovery request sending module 604, configured to send a first RRC connection recovery request to a source base station corresponding to the source cell when the target cell is the source cell or a signal strength of the source cell is greater than a preset strength threshold.
The signal strength of the source cell comprises Reference Signal Received Power (RSRP) of the source cell measured by the UE.
A second recovery request sending module 605, configured to send a second RRC connection recovery request to the target base station corresponding to the target cell when the RRC connection recovery success rate of the target cell is greater than a preset threshold.
A second target cell determining module 606, configured to re-determine the target cell according to the cell reselection criterion when the target cell is not the source cell and the signal strength of the source cell is less than or equal to a preset strength threshold.
The sixth embodiment is a device embodiment corresponding to the second embodiment, and the detailed information may refer to the detailed description of the second embodiment, which is not described herein again.
EXAMPLE seven
Referring to fig. 9, a block diagram of a processing apparatus for RRC connection recovery in radio resource control according to a seventh embodiment of the present invention is shown, and applied to a base station, the processing apparatus specifically includes:
a recovery success rate statistics module 701, configured to periodically count a success rate of an RRC connection recovery request of a cell;
a field configuration module 702, configured to configure a preset field for the cell if the success rate of the RRC connection recovery request of the cell is less than or equal to a preset threshold;
a first recovery request receiving module 703, configured to receive a first RRC connection recovery request sent by a user equipment UE.
The first RRC connection recovery request is sent by the UE under the condition that the RRC connection recovery success rate of a target cell is smaller than or equal to a preset threshold, and the target cell is a source cell or the signal intensity of the source cell is larger than a preset intensity threshold.
Optionally, the signal strength of the source cell includes reference signal received power, RSRP, of the source cell measured by the UE.
The seventh embodiment is an apparatus embodiment corresponding to the third embodiment, and the detailed information may refer to the detailed description of the third embodiment, which is not described herein again.
Example eight
Referring to fig. 10, a structural diagram of a processing apparatus for RRC connection recovery in radio resource control according to an eighth embodiment of the present invention is shown, and applied to a base station, the processing apparatus specifically includes:
a recovery success rate counting module 801, configured to periodically count a success rate of an RRC connection recovery request of a cell.
A field configuration module 802, configured to configure a preset field for the cell if the success rate of the RRC connection recovery request of the cell is less than or equal to a preset threshold.
A first recovery request receiving module 803, configured to receive a first RRC connection recovery request sent by a user equipment UE.
The first RRC connection recovery request is sent by the UE under the condition that the RRC connection recovery success rate of a target cell is smaller than or equal to a preset threshold, and the target cell is a source cell or the signal intensity of the source cell is larger than a preset intensity threshold.
Optionally, the signal strength of the source cell includes reference signal received power, RSRP, of the source cell measured by the UE.
A second recovery request receiving module 804, configured to receive a second RRC connection recovery request sent by the UE.
And the second RRC connection recovery request is sent by the UE under the condition that the RRC connection recovery success rate of the target cell is greater than a preset threshold.
And the second RRC connection recovery request carries the UE identification which is distributed to the UE by the source base station.
A determining module 805, configured to determine whether the base station is the source base station according to the UE identity.
Optionally, the determining module includes:
the analysis submodule is used for analyzing the identity information of the source base station according to the UE identification;
and the judging submodule is used for judging whether the target base station is the source base station or not according to the identity information.
A second recovery success rate determining module 806, configured to determine whether a current RRC connection recovery success rate of the target cell is less than or equal to a preset threshold if the base station is not the source base station.
A redirection module 807, configured to send an RRC release message to the UE if the current RRC connection restoration success rate of the target cell is less than or equal to a preset threshold.
Wherein the RRC release message includes a redirection carrier signal of the source cell, so that the UE performs RRC connection recovery in the source cell according to the redirection carrier signal.
A query module 808, configured to query the source base station in a preset neighbor base station table according to the UE identifier if the current RRC connection restoration success rate of the target cell is greater than a preset threshold.
A request module 809, configured to send a UE context request message to the source base station.
A receiving module 810, configured to receive context request data of the UE provided by the source base station.
A first control module 811, configured to control the UE to perform RRC connection recovery in the target cell according to the context request data.
A second control module 812, configured to control the UE to perform RRC connection recovery in the source cell according to the stored context request data of the UE.
The eighth embodiment is an apparatus embodiment corresponding to the fourth embodiment, and the detailed information may refer to the detailed description of the fourth embodiment, which is not described herein again.
An embodiment of the present invention further provides an electronic device, referring to fig. 11, including: a processor 1101, a memory 1102 and a computer program 11021 stored on the memory and executable on the processor, which when executing the program implements the processing method of RRC connection recovery of the foregoing embodiments.
An embodiment of the present invention further provides a readable storage medium, and when instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to execute the processing method for RRC connection recovery of the foregoing embodiment.
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.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. 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 apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (19)

1. A processing method for RRC connection recovery is applied to a User Equipment (UE), and comprises the following steps:
determining a target cell according to a cell reselection criterion;
judging whether the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold or not according to a preset field of the target cell, wherein the preset field is set by a target base station corresponding to the target cell according to the RRC connection recovery success rate of the target cell counted regularly;
under the condition that the RRC connection recovery success rate of the target cell is less than or equal to a preset threshold, judging whether the target cell is a source cell or not according to a cell identifier;
and sending a first RRC connection recovery request to a source base station corresponding to the source cell under the condition that the target cell is the source cell or the signal strength of the source cell is greater than a preset strength threshold value.
2. The method according to claim 1, wherein after the step of determining whether the RRC connection restoration success rate of the target cell is less than or equal to a preset threshold according to a preset field of the target cell, the method further comprises:
and sending a second RRC connection recovery request to a target base station corresponding to the target cell under the condition that the RRC connection recovery success rate of the target cell is greater than a preset threshold.
3. The method of claim 1, wherein after the step of determining whether the target cell is a source cell according to a cell identifier, the method further comprises:
and under the condition that the target cell is not the source cell and the signal strength of the source cell is less than or equal to a preset strength threshold value, re-determining the target cell according to the cell reselection criterion.
4. The method of claim 1, wherein the step of determining the target cell according to the cell reselection criteria comprises:
acquiring a first carrier frequency and a first carrier frequency priority of the source cell and a second carrier frequency priority of the adjacent cell;
if the first carrier frequency is equal to the second carrier frequency or the priority of the first carrier frequency is equal to the priority of the second carrier frequency, calculating the first signal intensity of the source cell and the second signal intensity of the adjacent cell;
and if the first signal strength is smaller than the second signal strength, determining the adjacent cell as a target cell meeting a cell reselection criterion.
5. The method of claim 4, wherein after the step of obtaining the priority of the first carrier frequency and the first carrier frequency of the source cell and the priority of the second carrier frequency and the second carrier frequency of the neighboring cell, the method further comprises:
if the first carrier frequency priority is greater than the second carrier frequency priority, judging whether the residence time of the UE in the source cell exceeds preset time;
if the residence time of the UE in the source cell exceeds the preset time, determining a first receiving level and a first receiving signal quality of the source cell and a second receiving level and a second receiving signal quality of the adjacent cell;
if the first receiving level is smaller than a first low-frequency reselection threshold and the second receiving level is larger than a second low-frequency reselection threshold, determining that the neighboring cell is a target cell meeting a cell reselection criterion; alternatively, the first and second electrodes may be,
and if the first received signal quality is less than a third low-frequency reselection threshold and the second received signal quality is greater than a fourth low-frequency reselection threshold, determining the adjacent cell as a target cell meeting a cell reselection criterion.
6. The method of claim 4, wherein after the step of obtaining the priority of the first carrier frequency and the first carrier frequency of the source cell and the priority of the second carrier frequency and the second carrier frequency of the neighboring cell, the method further comprises:
if the first carrier frequency priority is smaller than the second carrier frequency priority, judging whether the residence time of the UE in the source cell exceeds preset time;
if the residence time of the UE in the source cell exceeds the preset time, determining a second receiving level and a second receiving signal quality of the neighboring cell;
if the second receiving level is greater than a first high-frequency reselection threshold, determining the adjacent cell as a target cell meeting a cell reselection criterion; alternatively, the first and second electrodes may be,
and if the second received signal quality is greater than a second high-frequency reselection threshold, determining the adjacent cell as a target cell meeting a cell reselection criterion.
7. The method of claim 1, wherein the step of determining whether the target cell is a source cell according to a cell identifier comprises:
reading a first cell identifier of the target cell from a system message;
comparing the first cell identifier with a stored second cell identifier of a source cell;
determining that the target cell is the source cell if the first cell identifier is consistent with the second cell identifier;
determining that the target cell is not the source cell if the first cell identifier is not consistent with the second cell identifier.
8. The method of claim 1, wherein the signal strength of the source cell comprises a Reference Signal Received Power (RSRP) of the source cell measured by the UE.
9. A processing method for RRC connection recovery is applied to a base station, and the method comprises the following steps:
periodically counting the success rate of RRC connection recovery requests of the cells;
if the success rate of the RRC connection recovery request of the cell is less than or equal to a preset threshold, configuring a preset field for the cell;
receiving a first RRC connection recovery request sent by User Equipment (UE), wherein the first RRC connection recovery request is sent by the UE under the condition that the RRC connection recovery success rate of a target cell is smaller than or equal to a preset threshold, and the target cell is a source cell or the signal intensity of the source cell is larger than a preset intensity threshold.
10. The method of claim 9, wherein after the step of configuring the preset field for the cell, the method further comprises:
receiving a second RRC connection recovery request sent by the UE, wherein the second RRC connection recovery request is sent by the UE under the condition that the RRC connection recovery success rate of the target cell is greater than a preset threshold.
11. The method of claim 10, wherein the second RRC connection recovery request carries a UE identity assigned to the UE by a source base station, and wherein the method further comprises:
judging whether the base station is the source base station or not according to the UE identification;
judging whether the current RRC connection recovery success rate of the target cell is less than or equal to a preset threshold or not under the condition that the base station is not the source base station;
and if the current RRC connection recovery success rate of the target cell is less than or equal to a preset threshold, sending an RRC release message to the UE, wherein the RRC release message comprises a redirection carrier signal of the source cell, so that the UE carries out RRC connection recovery in the source cell according to the redirection carrier signal.
12. The method according to claim 11, wherein after the step of determining whether the current RRC connection recovery success rate of the target cell is less than or equal to a preset threshold, the method further comprises:
if the current RRC connection recovery success rate of the target cell is greater than a preset threshold, inquiring the source base station in a preset adjacent base station table according to the UE identification;
sending a UE context request message to the source base station;
receiving context request data of the UE provided by the source base station;
and controlling the UE to carry out RRC connection recovery in the target cell according to the context request data.
13. The method of claim 11, wherein the step of determining whether the base station is the source base station according to the UE identity comprises:
analyzing the identity information of the source base station according to the UE identification;
and judging whether the target base station is the source base station or not according to the identity information.
14. The method of claim 9, further comprising:
and controlling the UE to perform RRC connection recovery in the source cell according to the stored context request data of the UE.
15. The method of claim 9, wherein the signal strength of the source cell comprises a Reference Signal Received Power (RSRP) of the source cell measured by the UE.
16. A processing device for RRC connection recovery, applied to a User Equipment (UE), the device comprising:
a first target cell determining module, configured to determine a target cell according to a cell reselection criterion;
a first recovery success rate determining module, configured to determine, according to a preset field of the target cell, whether an RRC connection recovery success rate of the target cell is less than or equal to a preset threshold, where the preset field is set by a target base station corresponding to the target cell according to an RRC connection recovery success rate of the target cell counted periodically;
a cell judgment module, configured to judge whether the target cell is a source cell according to a cell identifier when a success rate of RRC connection restoration of the target cell is less than or equal to a preset threshold;
a first recovery request sending module, configured to send a first RRC connection recovery request to a source base station corresponding to the source cell when the target cell is the source cell or a signal strength of the source cell is greater than a preset strength threshold.
17. A processing device for RRC connection recovery, applied to a base station, the device comprising:
the recovery success rate counting module is used for periodically counting the success rate of the RRC connection recovery request of the cell;
a field configuration module, configured to configure a preset field for the cell if a success rate of an RRC connection recovery request of the cell is less than or equal to a preset threshold;
a first RRC connection recovery request receiving module, configured to receive a first RRC connection recovery request sent by a user equipment UE, where the first RRC connection recovery request is sent by the UE when an RRC connection recovery success rate of a target cell is less than or equal to a preset threshold, and the target cell is a source cell or a signal strength of the source cell is greater than a preset strength threshold.
18. An electronic device, comprising:
processor, memory and computer program stored on the memory and executable on the processor, characterized in that the processor when executing the program implements a processing method for radio resource control, RRC, connection recovery according to any of claims 1 to 8 or 9 to 15.
19. A readable storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the processing method for radio resource control, RRC, connection recovery as claimed in any one of claims 1 to 8 or 9 to 15.
CN202010942209.5A 2020-09-09 2020-09-09 Processing method and device for RRC connection recovery, electronic equipment and storage medium Active CN114245484B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010942209.5A CN114245484B (en) 2020-09-09 2020-09-09 Processing method and device for RRC connection recovery, electronic equipment and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010942209.5A CN114245484B (en) 2020-09-09 2020-09-09 Processing method and device for RRC connection recovery, electronic equipment and storage medium

Publications (2)

Publication Number Publication Date
CN114245484A true CN114245484A (en) 2022-03-25
CN114245484B CN114245484B (en) 2023-06-02

Family

ID=80742720

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010942209.5A Active CN114245484B (en) 2020-09-09 2020-09-09 Processing method and device for RRC connection recovery, electronic equipment and storage medium

Country Status (1)

Country Link
CN (1) CN114245484B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220120842A1 (en) * 2020-10-15 2022-04-21 Qualcomm Incorporated Method and apparatus for location of a user equipment in an inactive state

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103763730A (en) * 2014-02-25 2014-04-30 重庆邮电大学 Wireless link failure recovery enhancing method and device based on optimal reconstruction target cell selection
CN103797854A (en) * 2012-02-01 2014-05-14 富士通株式会社 Method for recovering wireless connections, mobile communication system, user equipment and base station
US20150009802A1 (en) * 2012-03-15 2015-01-08 Telefonaktiebolaget L M Ericsson (Publ) Method and Arrangement for Connection Re-establishment in a Telecommunication System
CN106255160A (en) * 2016-09-14 2016-12-21 华为技术有限公司 Rebuild the method and apparatus that RRC connects
CN106792947A (en) * 2017-02-13 2017-05-31 中国联合网络通信集团有限公司 A kind of RRC connection reconstructions cube method and base station
CN108377577A (en) * 2016-11-21 2018-08-07 华为技术有限公司 The restoration methods and device of down wireless link failure
CN110582128A (en) * 2018-06-07 2019-12-17 华为技术有限公司 RRC connection reestablishment method and terminal
WO2020056433A2 (en) * 2018-09-12 2020-03-19 Futurewei Technologies, Inc. SECURE COMMUNICATION OF RADIO RESOURCE CONTROL (RRC) REQUEST OVER SIGNAL RADIO BEARER ZERO (SRBo)

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103797854A (en) * 2012-02-01 2014-05-14 富士通株式会社 Method for recovering wireless connections, mobile communication system, user equipment and base station
US20150009802A1 (en) * 2012-03-15 2015-01-08 Telefonaktiebolaget L M Ericsson (Publ) Method and Arrangement for Connection Re-establishment in a Telecommunication System
CN103763730A (en) * 2014-02-25 2014-04-30 重庆邮电大学 Wireless link failure recovery enhancing method and device based on optimal reconstruction target cell selection
CN106255160A (en) * 2016-09-14 2016-12-21 华为技术有限公司 Rebuild the method and apparatus that RRC connects
CN108377577A (en) * 2016-11-21 2018-08-07 华为技术有限公司 The restoration methods and device of down wireless link failure
CN106792947A (en) * 2017-02-13 2017-05-31 中国联合网络通信集团有限公司 A kind of RRC connection reconstructions cube method and base station
CN110582128A (en) * 2018-06-07 2019-12-17 华为技术有限公司 RRC connection reestablishment method and terminal
WO2020056433A2 (en) * 2018-09-12 2020-03-19 Futurewei Technologies, Inc. SECURE COMMUNICATION OF RADIO RESOURCE CONTROL (RRC) REQUEST OVER SIGNAL RADIO BEARER ZERO (SRBo)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ERICSSON: "RRC connection re-establishment for handover failure recovery", 3GPP TSG RAN WG2 #106 R2-1906205 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220120842A1 (en) * 2020-10-15 2022-04-21 Qualcomm Incorporated Method and apparatus for location of a user equipment in an inactive state

Also Published As

Publication number Publication date
CN114245484B (en) 2023-06-02

Similar Documents

Publication Publication Date Title
US11758452B2 (en) Communications system
KR101616172B1 (en) Method for inter-radio access technology cell reselection
KR102205265B1 (en) Method and system for improving circuit switched fall back(csfb) performance
US10034207B2 (en) Method for re-selecting cell by user equipment and user equipment using same
EP2525605B1 (en) Method and apparatus for switching between different network standards
US8600388B2 (en) Method and apparatus for cell reselection for a wireless communication device
US9008659B1 (en) Cell reselection methods based on tracking area for cellular systems
CN103067987B (en) The location area updating method of a kind of subscriber equipment and device
EP1802158B1 (en) Method for handling periodic PLMN search in RRC connected mode in UMTS system
CN112272392A (en) Cell residence method, device, terminal equipment and storage medium
WO2007088381A9 (en) Network and method for optimizing cell reselection by using an estimation of mobility of a mobile terminal
CN103891364A (en) Mobile device network signaling management
US20160302151A1 (en) Method for establishing rrc connection for cell of terminal and terminal using same
CN105210426A (en) Method for an improved cell selection/reselection by a user equipment trying to camp on a radio cell of a public land mobile network
US20230035046A1 (en) Radio resource control rrc reestablishment method and apparatus
CN117223327A (en) Method and UE for 5G data session handover
US9888415B1 (en) Method and apparatus for cell reselection
CN114245484B (en) Processing method and device for RRC connection recovery, electronic equipment and storage medium
WO2017092639A1 (en) Paging method, device and system in dense small cell deployment scenario
US10075909B2 (en) Method to select a candidate cell during cell selection
CN114828106B (en) Method and user terminal for realizing mobility management
CN114390559A (en) Information configuration method, device, equipment and computer readable storage medium
CN115915312A (en) Method, system, storage medium and equipment for updating neighbor relation

Legal Events

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