CN103379529B - User equipment and method for recovering wireless link failures - Google Patents
User equipment and method for recovering wireless link failures Download PDFInfo
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Abstract
The invention provides user equipment and a method for recovering wireless link failures. The method comprises the steps that after the user equipment detects RLF existing in a current cell, if the RLF needs to access the current cell again, whether the communication quality of the user equipment conforms to the preset communication standards or not is judged; if the communication quality of the user equipment conforms to the preset communication standards, a target cell used for enabling the user equipment to access the wireless network again is selected from cells which have the same frequency points with the current frequency points of the user equipment; if the communication quality of the user equipment does not conform to the preset communication standards, a target cell used for enabling the user equipment to access the wireless network again is selected from the cells with any frequency points; the RLF of the user equipment is recovered by establishing connection between the user equipment and the selected target cell. By means of the user equipment and the method for recovering the wireless link failures, the probability that a wireless link cannot be effectively recovered due to the fact that the user equipment selects the current cell again is lowered, and the success rate and the validity of recovering the wireless link are improved.
Description
Technical field
The present invention relates to the network communications technology, more particularly to a kind of restoration methods and user equipment of radio jink failure,
Belong to communication technical field.
Background technology
According to third generation partner program (The Third Generation Partnership Project, 3GPP)
The regulation of TS serial protocols, if Radio Link Failure (Radio Link Failure, RLF) is detected, and circuit commutative field
Business is still for (Circuit Switched Domain, CS) and/or packet-switched domain (Packet Switched Domain, PS)
Continuing, then triggering Restoration Mechanism.
The Restoration Mechanism mainly includes following flow process：User equipment (User Equipment, UE) release physical channels are provided
Source, and the cell for selecting to be adapted in current frequency；UE resident (camp on) sends cell update letter after selected cell
Order；Network side responds cell update signaling, is that UE rebuilds physical channel resources, or also updates transmission channel and/or wirelessly hold
Carry resource.If no exceptions in above-mentioned flow process implementation procedure, into work recovery CS/PS business.
In above-mentioned Restoration Mechanism, 25.331 agreements of 3GPP TS regulation, when UE selects the cell being adapted to, should be selected and UE
Current frequency identical cell.But this current frequency based on UE selects the scheme of the cell being adapted to, and there is following defect：
If the neighbor cell of the current area of UE is alien-frequency district, when UE selects the cell being adapted to based on the current frequency of UE, have
Larger probability reenters current area.As UE due to current area occurs RLF is likely to still suffer from, if so
UE reenters current area, it would still be possible to which RLF occurs, and reduces the reliability of wireless link recovery.
The content of the invention
In view of this, the present invention provides the restoration methods and user equipment of at least one radio jink failure.
On the one hand, the present invention provides a kind of RLF restoration methods, including：User equipment betides current area detecting
RLF after, if judging to access again the current area, whether the communication quality of the user equipment meets default communication mark
It is accurate；If meeting, from the cell with frequency identical with the current frequency of the user equipment, select for the user equipment
Again access the Target cell of wireless network；If being unsatisfactory for, from the cell with any frequency, select to set for the user
The standby Target cell for accessing again wireless network；The user equipment is set up by the Target cell with the selection and is connected, complete
Recover into RLF；Wherein described communication quality meets the communication quality that the default communication standard represents the current area
Meet the communication requirement of the user equipment.
On the other hand, the present invention provides a kind of user equipment, including：Judge module, for detect betide it is current
After the RLF of cell, if judging to access again the current area, whether the communication quality of user equipment meets default communication mark
It is accurate；Cell reselection module, if for meeting, from the cell with frequency identical with the current frequency of the user equipment, choosing
Select the Target cell that wireless network is accessed again for the user equipment；If being unsatisfactory for, from the cell with any frequency,
Select the Target cell of wireless network is accessed again for the user equipment；Link block, for by with the selection
Target cell sets up connection, completes RLF recoveries；Wherein described communication quality meets the default communication standard and represents described current
The communication quality of cell meets the communication requirement of the user equipment.
The RLF restoration methods provided according to the present invention and user equipment, it is possible to decrease lead because UE selects current area again
Cause cannot effectively recover the probability of link, improve the success rate and effectiveness of wireless link recovery.
Description of the drawings
Schematic flow sheets of the Fig. 1 for the RLF restoration methods of one embodiment of the invention；
Schematic flow sheets of the Fig. 2 for the RLF restoration methods of another embodiment of the present invention；
Fig. 3 is the schematic flow sheet of the RLF restoration methods of another embodiment of the invention；
Fig. 4 is that an example judges whether current area meets the stream of default interference strength standard in the embodiment of the present invention
Journey schematic diagram；
Structural representations of the Fig. 5 for the user equipment of another embodiment of the present invention.
Specific embodiment
Some vocabulary used in be censuring specific component in this specification and claim, and in art
Technical staff, it is to be appreciated that hardware manufacturer may call same component with different nouns, this specification not with
The difference of title is used as the mode for distinguishing component, but the difference with component functionally is used as the criterion distinguished, logical
"comprising"/" the including " of description mentioned in is an open term, therefore should be construed to " include but do not limit
In ".Following preferred embodiments implemented for the present invention.Following examples are only used for the technical characteristic for enumerating the explaination present invention, and
Non- that invention is construed as limiting, the scope of the invention is defined by claim.
Schematic flow sheets of the Fig. 1 for the RLF restoration methods of one embodiment of the invention.As shown in figure 1, the RLF recovery sides
Method includes below scheme：
Step 101, user equipment is after the RLF for betiding current area is detected, if judging to access again described current
Whether cell, the communication quality of the user equipment meet default communication standard；
Step 102, if meeting, from the cell with frequency identical with the current frequency of the user equipment, selects to use
Again the Target cell of wireless network is accessed in the user equipment；If being unsatisfactory for, from the cell with any frequency, select
Again the Target cell of wireless network is accessed for the user equipment；
Step 103, the user equipment are set up by the Target cell with the selection and are connected, and complete RLF recoveries.
Specifically, when user equipment detects the RLF of current area, RLF Restoration Mechanism, user equipment (User are triggered
Equipment, UE) start to perform cell reselection.In the RLF restoration methods of the embodiment of the present invention, UE starts to perform cell weight
When selecting, it is first determined the scope of available cell, that is, it is only capable of selecting the current frequency identical cell with UE, or can selects
Select the cell of any frequency.Wherein, this determines the process of the scope of available cell, is by judging current area by UE
Whether communication quality disclosure satisfy that the communication requirement of UE to realize.More specifically, UE can pass through to detect current area
The related parameter values of signal intensity or signal quality, and the corresponding parametric values by detected value with default communication standard are compared,
To perform above-mentioned judgement.Wherein, the relevant parameter of signal intensity or signal quality can be any communication matter of the prior art
Amount parameter, is not limited in the present embodiment.A kind of embodiment of the invention, in step 103, the user equipment can
By setting up wireless heterogeneous networks (Radio Resource Control, RRC) connection with the Target cell of the selection, come
Recover into RLF.According to another embodiment of the present invention, in step 103, the user equipment also can by with the selection
Target cell set up physical layer synchronization (that is, set up physical layer connection), complete RLF recoveries.Default communication standard it is corresponding
Parameter value can be set according to the communication requirement of UE, and which should be able to meet foundation and be reliably connected, RLF will not occur.
After UE determines the scope of available cell, determined by the range of, using arbitrary cell in prior art
Selection criterion, selects the Target cell of wireless network is accessed again for UE.For example, UE enters to each cell in determined scope
Row is investigated, and selects to meet the cell of selection criterion S as follows.Wherein, according to one embodiment of present invention, carrying out
Before cell reselection, according to cell signal quality by being ranked up to weak order to each cell by force, and can sequentially detect which is
It is no to meet criterion S, if meeting, it is resident to the cell, otherwise detects next cell.
Selection criterion S is specially：It is for FDD (Frequency Division Duplexing, FDD) cell, full
Sufficient Srxlev>0 and Squal>0；For time division duplex (Time Division Duplexing, TDD) cell, S is metrxlev>0.More
For specifically, S can be calculated according to equation belowqualAnd Srxlev：
Squal=Qqualmeas-Qqualmin；
Srxlev=Qrxlevmeas-Qrxlevmin-Pcompensation。
Wherein, QqualmeasThe cell signal quality value for obtaining is measured for UE, refers to the CPICH Common Pilot Channel of FDD cells
The chip energy of (Common Pilot Channel, CPICH) and the ratio (E of total interfering energyc/N0)。QqualminFor wireless network
Less cell signal quality value (for example, the Q arranged in networkqualminMay be configured as the user equipment and reside at current area
Required minimum Ec/N0Ratio), if Qqualmeas<Qqualmin, then it is considered that UE departing from the cell service area.Therefore,
SqualFor the difference between the less cell signal quality value of the district pilots mass value and network settings of FDD cells, accordingly
Ground, Squal>Less cell signal quality value of the district pilots mass value of 0 expression FDD cell better than network settings.
QrxlevmeasThe cell signal strength value for obtaining is measured for UE, for FDD cells, the value refers to connecing for CPICH
Receiving number power (Received Signal Code Power, RSCP)；For TDD cell, the value refers to Your Majesty altogether
The RSCP of control physical channel (Primary Common Control Physical Channel, P-CCPCH).QrxlevminFor
The less receiving power of cell arranged in wireless network, the parameter are read from system broadcast message by UE, and general UE is reading
Also need afterwards to do certain arithmetic conversion, be not limited herein, wherein in an embodiment of the present invention, the less receiving power of cell
QrxlevminThe user equipment is may be configured as in the wireless network resides at the minimal detectable power needed for current area；
PcompensationFor offset, for the difference of the cell received signal performance number for obtaining and cell smaller power value is measured to UE
Compensate, it is possible to by formula Pcompensation=max (UE_TXPWR_MAX_RACH-P_MAX, 0) obtains, wherein, letter
Number max (X, Y) represents the greater in real number X and Y, and UE_TXPWR_MAX_RACH is UE Stochastic accessings when Stochastic accessing is done
Maximum transmit power on channel (Random Access Channel, RACH), is sent by system broadcast message, and P_MAX is UE
Maximum nominal emission power.Therefore, SrxlevRepresent the cell received signal performance number that the UE measurements after compensation are obtained
With the difference of cell smaller power value, correspondingly, Srxlev>0 represents that the cell received signal power that UE measurements are obtained is better than network
The receiving power of setting.
For FDD cells, if meeting Srxlev>0 and Squal>0, then it is assumed that the cell meets resident requirement；It is little for TDD
Area, as long as meeting Srxlev>0, then it is assumed that the cell meets resident requirement.UE select it is arbitrary meet the resident cell for requiring as with
In the Target cell for accessing again wireless network.
After UE selection target cells, according to existing procedure Stochastic accessing Target cell, and it is attached with Target cell and builds
It is vertical.After completing connection establishment, work recovery wireless link.
According to the RLF restoration methods of the present embodiment, as UE is detecting RLF, when starting to perform cell reselection, sentence first
If disconnected UE accesses current area again, whether communication quality meets default communication standard, if meeting, even if knowing that UE gravity treatments are returned
Current area, it is also possible to effectively recover wireless link, so selecting the current frequency identical cell with UE, connects again as UE
Enter the Target cell of wireless network, to recover rapidly wireless link；If being unsatisfactory for, selected from the cell of any frequency
Select, so that the probability that current area is gone back in UE gravity treatments is greatly reduced, so as to reduce leading to not to have because UE selects current area again
Effect recovers the probability of link, improves the success rate and effectiveness of wireless link recovery.
Schematic flow sheets of the Fig. 2 for the RLF restoration methods of another embodiment of the present invention.As shown in Fig. 2 the RLF recovers
Method includes below scheme：
Step 201, UE detect RLF；
Step 202, judges whether to meet the trigger condition for performing cell update；If so, then execution step 203, if it is not, then
Execution step 210；
Step 203, judges for indicating the relevant parameter of the received signal strength of the current area, if meet default
Received signal strength standard；If meeting, execution step 204, if being unsatisfactory for, execution step 206；
Step 204, selects the more excellent cell of the current frequency with user equipment, for example, selects on current frequency most
Excellent cell；
Step 205, the cell of the current frequency with user equipment for judging whether to choose suitable；If so, then perform
Step 209, if it is not, then execution step 208；
Step 206, selects the more excellent cell with any frequency, for example, selects the optimum subdistrict on any frequency；
Step 207, judges whether to choose the suitable cell with any frequency；If so, then execution step 209, if
It is no, then execution step 208；
Step 208, judges whether recovery intervalometer is overtimeIf it is not, then execution step 206；If so, then execution step 210；
Step 209, sends cell update and waits the cell update that network side is returned to confirm；
Step 210, UE enter idle condition.
Specifically, in above-mentioned steps 203, by judging to be used for the phase of the received signal strength for indicating the current area
Related parameter, if meet default received signal strength standard, in realizing above-described embodiment one, if judging to access again described working as
Whether front cell, the communication quality of UE meet the process of default communication standard.It is following with three kinds of specific received signal strengths
Relevant parameter and accordingly default received signal strength standard, it is illustrative to step 203.
Judgment mode one：
Judge for indicating the relevant parameter of the received signal strength of the current area, if meet and default receive signal
Strength criterion, specifically includes：
Judge the receiving power of the current area of UE measurements, if less than default received power threshold, if so, then sentence
Surely it is unsatisfactory for, if it is not, then judging to meet；Wherein, the default received power threshold more than the cell arranged in wireless network compared with
Little receiving power, in an embodiment of the present invention, less receiving power Q of cellrxlevminMay be configured as in the wireless network described
User equipment resides at the minimal detectable power needed for current area.
Specifically, that is, judge whether to meet：Qrxlevmeas<α；Wherein, QrxlevmeasFor the reception of the current area of UE measurements
Power, specific metering system can be realized using any receiving power metering system of prior art, not done in the present embodiment
Limit；α is default received power threshold, can be configured according to communication requirement, but should meet α for negative value, and should meet α>
Qrxlevmin, for example, it is set to α=- 96dBm.If meeting Qrxlevmeas<α, such as Qrxlevmeas=-100dBm, if then judging UE weights
New to access current area, then the communication quality of UE is unsatisfactory for default communication standard；If being unsatisfactory for Qrxlevmeas<α, such as Qrxlevmeas
=-92dBm, if then judging, UE accesses current area again, and the communication quality of UE meets default communication standard.
Judgment mode two：
Judge for indicating the relevant parameter of the received signal strength of the current area, if meet and default receive signal
Strength criterion, specifically includes：
Judge the receiving power of the current area of the user equipment measurement, the ratio with the less receiving power of cell
Whether more than default receiving power ratio, if so, then judge to be unsatisfactory for, if it is not, then judging to meet；Wherein, the default reception
Power ratio is more than 0 and is less than 1.
Specifically, that is, judge whether to meet Qrxlevmeas/Qrxlevmin>β(0<β<1).For example, in TD SDMA
In (Time Division-Synchronous Code Division Multiple Access, TD-SCDMA) network,
Qrxlevmin- 103dBm is typically configured to, if expecting the Q of measurementrxlevmeasMeet more than or equal to -96dBm, can arrange β=
0.93。
When using aforesaid way, due to QrxlevminRepresent that UE resides in the signal intensity access thresholding of cell, thus it is logical
Cross judgement QrxlevmeasWith QrxlevminRatio whether conformance with standard, relative to judgment mode one, can more reasonably embody measurement
Current area receiving power and the less receiving power of cell relation.In an embodiment of the present invention, the less reception of cell
Power QrxlevminThe user equipment is may be configured as in the wireless network resides at the minimal detectable power needed for current area.
Judgment mode three：
It is described to judge for indicating the relevant parameter of the received signal strength of the current area, if to meet default reception
Signal intensity standard, specifically includes：
Judge the path loss of the P-CCPCH to the current area of UE measurements, the ratio with average path loss is
It is no that ratio is lost more than preset path, if so, then judge to be unsatisfactory for, if it is not, then judging to meet；Wherein, the preset path is damaged
Loss-rate value is more than 1.
Specifically, that is, judge whether to meet LPCCPCH/L0>γ(γ>1), the concrete numerical value of γ can be set as needed.
Above-mentioned three kinds concrete judgment modes, are used only as the specific example of the embodiment of the present invention, rather than to the embodiment of the present invention
Restriction, it will be appreciated by those of skill in the art that adopt any other mode, judge for indicating the current area
The relevant parameter of received signal strength, if meet default received signal strength standard, be implemented for enforcement of the present invention
The technical scheme of example.
Fig. 3 is the schematic flow sheet of the RLF restoration methods of another embodiment of the invention.As shown in figure 3, the RLF recovers
Method includes below scheme：
Step 301, UE detect RLF；
Step 302, judges whether to meet the trigger condition for performing cell update；If so, then execution step 303, if it is not, then
Execution step 310；
Step 303, judges for indicating the relevant parameter of the working frequency points co-channel interference intensity of the current area, if
Meet default interference strength standard；If meeting, execution step 304, if being unsatisfactory for, execution step 306；
Step 304, from the cell with frequency identical with the current frequency of the user equipment, selects for the use
Family equipment accesses the Target cell of wireless network again；
Step 305, the cell of the current frequency with user equipment for judging whether to choose suitable；If so, then perform
Step 309, if it is not, then execution step 308；
Step 306, selects the more excellent cell with any frequency, for example, selects the optimum subdistrict on any frequency；
Step 307, judges whether to choose the suitable cell with any frequency；If so, then execution step 309, if
It is no, then execution step 308；
Step 308, judges whether recovery intervalometer is overtimeIf it is not, then execution step 306；If so, then execution step 310；
Step 309, sends cell update and waits the cell update that network side is returned to confirm；
Step 310, UE enter idle condition.
In above-mentioned steps 303, by judging to be used for the working frequency points co-channel interference intensity for indicating the current area
Relevant parameter, if meet default interference strength standard, in realizing above-described embodiment one, if judging to access again described current
Whether cell, the communication quality of UE meet the process of default communication standard.It is following with a kind of phase of specific received signal strength
Related parameter and accordingly default received signal strength standard, it is illustrative to step 303.
Specifically, in exemplary judgment mode, the working frequency points judged for indicating the current area are with frequency
The relevant parameter of interference strength, if meet default interference strength standard, specifically include：
Judge whether with the ratio of the signal intensity of the current area more than or equal to preset signal strength ratio and
There is with the current area adjacent cell of identical working frequency points, if so, then judge to be unsatisfactory for, if it is not, then judging to meet.
More specifically, UE is detecting the RLF that betides current area, also includes before：
UE safeguards have in the adjacent cell of identical working frequency points with the current area, specifying with stronger signal intensity
The adjacent cell of quantity, for example, preserve in whole adjacent cells of current area, the mark or letter of 3 most strong adjacent cells of signal intensity
Number intensity；
Wherein, it is described judge whether with the ratio of the signal intensity of the current area more than or equal to preset signals it is strong
Spend ratio and there is with the current area adjacent cell of identical working frequency points, specifically include：
In judging the adjacent cell of specified quantity of the maintenance, if having the signal intensity of at least one adjacent cell, meet
It is more than or equal to preset signal strength ratio with the ratio of the signal intensity of the current area, if so, then judges exist, if it is not,
Then judge do not exist.
Wherein, preset signal strength ratio is, for example, 8, then most strong by comparing such as 3 signal intensitys of UE maintenances
Adjacent cell, if at least one satisfaction is more than or equal to 8 with the ratio of the signal intensity of current area, if if so, then judging UE weights
New to access current area, the communication quality of UE is unsatisfactory for default communication standard；If if it is not, it is current little then to judge that UE is accessed again
Area, then the communication quality of UE meet default communication standard.
Above-mentioned judgement example is for example realized by following sentence：
Fig. 4 is that an example judges whether current area meets the stream of default interference strength standard in the embodiment of the present invention
Journey schematic diagram.As shown in figure 4, the judgement flow process for performing above-mentioned sentence is comprised the following steps：
Step 401, makes parameter Index=1, wherein, parameter Index is positive integer；
Step 402, judges whether to meet maxdp [Index]/maxdp [0] >=M；Wherein, maxdp [0] represents current little
The signal most powerful path energy in area, when Index ≠ 0, maxdp [Index] represents the signal most powerful path of the adjacent cell of current area
Energy, and M is for preset signal strength ratio and M is arithmetic number；If so, then execution step 403, if it is not, then execution step
404；
Step 403, judges that current area is unsatisfactory for default interference strength standard, and terminates flow process；
Step 404, makes parameter Index=Index+1；
Step 405, judges whether to meet Index≤N；If so, execution step 402 is then returned, if it is not, then execution step
406；Wherein, N is the number of the adjacent cell with stronger signal intensity that UE is safeguarded；
Step 406, judges that current area meets default interference strength standard, and terminates flow process.
In TD-SCDMA network, in the case of the signal intensity of current area is preferable, it is also possible to due to working frequency points
On stronger co-channel interference and cause RLF.Due in the prior art, the cell that UE is adapted to according to current dominant frequency point selection, if
The dominant frequency point of the adjacent cell of stronger signal be it is diverse, then UE because of current area meet access criterion S and again
Access former cell.Therefore, after success recovers from RLF, network may configure working frequency points as before for UE again,
UE then can occur RLF due to co-channel interference stronger in working frequency points again.By the RLF recovery sides using the present embodiment
Method, due to when cell selection is performed, if judging to know that the working frequency points co-channel interference of current area is excessive, from any frequency
Cell in selected, so that the probability that current area is gone back in UE gravity treatments is greatly reduced, so as to reduce selecting current little again because of UE
Qu Hou, the probability that RLF occurs again realize effective RLF and recover.
Structural representations of the Fig. 5 for the user equipment of another embodiment of the present invention.As shown in figure 5, the user equipment bag
Include：
Judge module 51, for after the RLF for betiding current area is detected, if judging to access again described current little
Whether area, the communication quality of user equipment meet default communication standard；
Cell reselection module 52, if for meeting, from frequency identical with the current frequency of the user equipment
In cell, select the Target cell of wireless network is accessed again for the user equipment；If being unsatisfactory for, from arbitrarily frequency
In the cell of point, select the Target cell of wireless network is accessed again for the user equipment；
Link block 53, is connected for being set up by the Target cell with the selection, completes RLF recoveries.In the present invention
In one embodiment, link block 53 can be embodied as RRC link blocks, for setting up Radio Resource with the Target cell of the selection
Control connection.In an alternative embodiment of the invention, link block 53 can also be embodied as physical layer connection modules, by with the choosing
The Target cell selected carries out physical layer synchronization (that is, setting up physical layer connection), completes RLF recoveries.
The user equipment of the present embodiment performs the idiographic flow of RLF recoveries and the RLF restoration methods of any of the above-described embodiment
It is identical, therefore here is omitted.
According to the user equipment of the present embodiment, as UE is detecting RLF, when starting to perform cell reselection, first determine whether
If UE accesses current area again, whether communication quality meets default communication standard, if meeting, even if know that UE gravity treatments are returned working as
Front cell, it is also possible to effectively recover wireless link, so selecting the current frequency identical cell with UE, is accessed again as UE
The Target cell of wireless network, to recover rapidly wireless link；If being unsatisfactory for, selected from the cell of any frequency,
So that the probability that current area is gone back in UE gravity treatments is greatly reduced, so as to reduce because UE selects current area again lead to not it is effectively extensive
The probability of multiple link, improves the success rate and effectiveness of wireless link recovery.
Further, in the user equipment of above-described embodiment, judge module specifically includes the first judging unit or
Two judging units.Wherein, the first judging unit is used for the correlation of the received signal strength for judging to be used to indicate the current area
Parameter, if meet default received signal strength standard；Second judging unit is used to judge for indicating the current area
The relevant parameter of working frequency points co-channel interference intensity, if meet default interference strength standard.
Further, in the user equipment of above-described embodiment, first judging unit specifically includes the first judgement
Unit, the second judgment sub-unit or the 3rd judgment sub-unit.Wherein, the first judgment sub-unit is used to judge the user equipment
The receiving power of the current area of measurement, if less than default received power threshold, if so, then judges to be unsatisfactory for, if it is not,
Then judge to meet；Wherein, the less receiving power of cell that the default received power threshold is arranged in being more than wireless network, wherein
In an embodiment of the present invention, less receiving power Q of cellrxlevminMay be configured as the user equipment in the wireless network to be resident
In the minimal detectable power needed for current area.Second judgment sub-unit is used to judge the described current of the user equipment measurement
Whether the receiving power of cell, with the ratio of the less receiving power of cell more than default receiving power ratio, if so, then judge not
Meet, if it is not, then judging to meet；Wherein, the default receiving power ratio is more than 0 and is less than 1.3rd judgment sub-unit is used for
Judge the path loss of the Primary Common Control Physical Channel PCCPCH to the current area of user equipment measurement, it is and flat
The ratio of equal path loss, if ratio is lost more than preset path, if so, then judges to be unsatisfactory for, if it is not, then judging to meet；
Wherein, the preset path loss ratio is more than 1.
Further, in the user equipment of above-described embodiment, second judging unit specifically includes the 4th judgement
Unit.Wherein, the 4th judgment sub-unit is used to judge whether that the ratio with the signal intensity of the current area is more than
There is in preset signal strength ratio and with the current area adjacent cell of identical working frequency points, if so, then judge discontented
Foot, if it is not, then judging to meet.
Further, in the user equipment of above-described embodiment, second judging unit also includes same frequency adjacent cell
Subelement is safeguarded, is had in the adjacent cell of identical working frequency points with the current area for safeguarding, with stronger signal intensity
Specified quantity adjacent cell；
Wherein, the 4th judgment sub-unit is specifically for judging in the adjacent cell of specified quantity of the maintenance, if
There is the signal intensity of at least one adjacent cell, satisfaction is more than or equal to preset signals with the ratio of the signal intensity of the current area
Intensity rate, if so, then judges exist, if it is not, then judging do not exist.
According to the user equipment of above-described embodiment, due to when cell selection is performed, if judging to know the work of current area
Make frequency point co-frequency interference excessive, then selected from the cell of any frequency, current area is gone back to so that UE gravity treatments are greatly reduced
Probability, the probability that RLF, so as to reduce being selected behind current area again because of UE, occurs again realize effective RLF and recover.
Finally it should be noted that：Above example only to illustrate technical scheme, rather than a limitation；Although
With reference to the foregoing embodiments the present invention is described in detail, it will be appreciated by those skilled in the art which still can be to front
State the technical scheme described in each embodiment to modify, or equivalent is carried out to which part technical characteristic；And these
Modification is replaced, and does not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a kind of restoration methods of radio jink failure, it is characterised in that include：
User equipment is after the Radio Link Failure for betiding current area is detected, if judging to access again described current little
Whether area, the communication quality of the user equipment meet default communication standard；
If the communication quality meets the default communication standard, from frequency identical with the current frequency of the user equipment
Cell in, select the Target cell of wireless network is accessed again for the user equipment；If the communication quality is unsatisfactory for
The default communication standard, from the cell with any frequency, selects to access again wireless network for the user equipment
Target cell；
The user equipment is set up by the Target cell with the selection and is connected, and completes the recovery of Radio Link Failure；
Wherein, the communication quality meets the default communication standard and represents that the communication quality of the current area meets institute
State the communication requirement of user equipment.
2. restoration methods of radio jink failure according to claim 1, it is characterised in that if the judgement is accessed again
Whether the current area, the communication quality of the user equipment meet default communication standard, specifically include：
Judge for indicating the relevant parameter of the received signal strength of the current area, if meet default received signal strength
Standard；Or
Judge for indicating the relevant parameter of the working frequency points co-channel interference intensity of the current area, if meet default interference
Strength criterion.
3. restoration methods of radio jink failure according to claim 2, it is characterised in that the judgement is used to indicate institute
State the relevant parameter of the received signal strength of current area, if meet default received signal strength standard, specifically include：
Judge the receiving power of the current area of the user equipment measurement, if less than default received power threshold, if
It is then to judge that the communication quality is unsatisfactory for the default communication standard, if it is not, it is described pre- then to judge that the communication quality meets
If communication standard；Wherein, the default received power threshold is more than the less receiving power of cell arranged in wireless network；Or
Judge the receiving power of the current area of the user equipment measurement, the ratio with the less receiving power of the cell
Whether more than default receiving power ratio, if so, then judge that the communication quality is unsatisfactory for the default communication standard, if it is not,
Then judge that the communication quality meets the default communication standard；Wherein, the default receiving power ratio is more than 0 and is less than 1；
Or
Judge the path loss of the Primary Common Control Physical Channel to the current area of user equipment measurement, it is and average
The ratio of path loss, if ratio is lost more than preset path, if so, then judges that the communication quality is unsatisfactory for described default
Communication standard, if it is not, then judging that the communication quality meets the default communication standard；Wherein, the preset path loss ratio
Value is more than 1.
4. restoration methods of radio jink failure according to claim 2, it is characterised in that the judgement is used to indicate institute
State the relevant parameter of the working frequency points co-channel interference intensity of current area, if meet default interference strength standard, specifically include：
Judge whether with the ratio of the signal intensity of the current area more than or equal to preset signal strength ratio and with institute
The adjacent cell that current area has identical working frequency points is stated, if so, then judges that the communication quality is unsatisfactory for the default communication
Standard, if it is not, then judging that the communication quality meets the default communication standard.
5. restoration methods of radio jink failure according to claim 4, it is characterised in that the user equipment is in detection
Also include to before the Radio Link Failure for betiding current area：
The user equipment safeguards have in the adjacent cell of identical working frequency points with the current area, with stronger signal intensity
Specified quantity adjacent cell；
Wherein, it is described to judge whether to be more than or equal to preset signal strength ratio with the ratio of the signal intensity of the current area
Value and there is with the current area adjacent cell of identical working frequency points, specifically include：
In judging the adjacent cell of specified quantity of the maintenance, if having the signal intensity of at least one adjacent cell, meet and institute
The ratio of signal intensity of current area is stated more than or equal to preset signal strength ratio, if so, then judges that presence is current with described
The ratio of the signal intensity of cell is more than or equal to preset signal strength ratio and has identical working frequency points with the current area
Adjacent cell, if it is not, then judge not exist being more than or equal to preset signal strength with the ratio of the signal intensity of the current area
Ratio and there is with the current area adjacent cell of identical working frequency points.
6. a kind of user equipment, it is characterised in that include：
Judge module, for after the Radio Link Failure for betiding current area is detected, if judging to access again described working as
Whether front cell, the communication quality of user equipment meet default communication standard；
Cell reselection module, if meeting the default communication standard for the communication quality, from with the user equipment
The identical frequency of current frequency cell in, select the Target cell of wireless network is accessed again for the user equipment；If
The communication quality is unsatisfactory for the default communication standard, from the cell with any frequency, selects to set for the user
The standby Target cell for accessing again wireless network；
Link block, is connected for being set up by the Target cell with the selection, completes the recovery of Radio Link Failure；
Wherein, the communication quality meets the default communication standard and represents that the communication quality of the current area meets institute
State the communication requirement of user equipment.
7. user equipment according to claim 6, it is characterised in that the judge module is specifically included：
First judging unit, for judging to be used for the relevant parameter of the received signal strength for indicating the current area, if full
The default received signal strength standard of foot；Or
Second judging unit, for judging to join for the related of working frequency points co-channel interference intensity for indicating the current area
Number, if meet default interference strength standard.
8. user equipment according to claim 7, it is characterised in that first judging unit is specifically included：
First judgment sub-unit, for judging the receiving power of the current area of the user equipment measurement, if be less than
Default received power threshold, if so, then judges that the communication quality is unsatisfactory for the default communication standard, if it is not, then judging institute
State communication quality and meet the default communication standard；Wherein, the default received power threshold is arranged in being more than wireless network
The less receiving power of cell；Or
Second judgment sub-unit is for judging the receiving power of the current area of the user equipment measurement, little with described
Whether the ratio of the less receiving power in area if so, then judges the communication quality be unsatisfactory for institute more than default receiving power ratio
Default communication standard is stated, if it is not, then judging that the communication quality meets the default communication standard；Wherein, the default reception
Power ratio is more than 0 and is less than 1；Or
3rd judgment sub-unit, for judging that the primary common control physical to the current area of the user equipment measurement is believed
The path loss in road, the ratio with average path loss, if ratio is lost more than preset path, if so, then judge described logical
Letter quality is unsatisfactory for the default communication standard, if it is not, then judging that the communication quality meets the default communication standard；Its
In, the preset path loss ratio is more than 1.
9. user equipment according to claim 7, it is characterised in that second judging unit is specifically included：
4th judgment sub-unit, presets for judging whether that the ratio with the signal intensity of the current area is more than or equal to
Signal intensity rate and there is with the current area adjacent cell of identical working frequency points, if so, then judge the communication quality
The default communication standard is unsatisfactory for, if it is not, then judging that the communication quality meets the default communication standard.
10. user equipment according to claim 9, it is characterised in that second judging unit also includes：
Subelement is safeguarded with frequency adjacent cell, is had in the adjacent cell of identical working frequency points with the current area for safeguarding,
The adjacent cell of the specified quantity with stronger signal intensity；
Wherein, the 4th judgment sub-unit is specifically for judging in the adjacent cell of specified quantity of the maintenance, if having to
The signal intensity of a few adjacent cell, satisfaction are more than or equal to preset signal strength with the ratio of the signal intensity of the current area
Ratio, if so, then judge to exist with the ratio of the signal intensity of the current area be more than or equal to preset signal strength ratio and
There is the adjacent cell of identical working frequency points with the current area, if it is not, then judging the signal for not having with the current area
The ratio of intensity is more than or equal to preset signal strength ratio and is had the adjacent cell of identical working frequency points with the current area.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210433965.0A CN103379529B (en) | 2012-04-26 | 2012-11-02 | User equipment and method for recovering wireless link failures |
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| CN201210126563.6 | 2012-04-26 | ||
| CN201210126563 | 2012-04-26 | ||
| CN2012101265636 | 2012-04-26 | ||
| CN201210433965.0A CN103379529B (en) | 2012-04-26 | 2012-11-02 | User equipment and method for recovering wireless link failures |
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| CN103379529A CN103379529A (en) | 2013-10-30 |
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| CN109673030B (en) * | 2017-10-16 | 2021-07-06 | 中国移动通信有限公司研究院 | A method, terminal and computer storage medium for network re-search |
| CN111479333B (en) * | 2019-01-23 | 2022-09-02 | 华为技术有限公司 | Communication method and communication device |
| CN111800798B (en) * | 2019-07-24 | 2022-02-15 | 维沃移动通信有限公司 | Sub-link data replication function control, information configuration method and device |
| CN112584553B (en) * | 2019-09-30 | 2023-04-14 | 维沃移动通信有限公司 | Radio Resource Control (RRC) connection reestablishment method, terminal equipment and network equipment |
| CN115396976A (en) * | 2021-05-24 | 2022-11-25 | 中国移动通信有限公司研究院 | A communication method, link selection method, user equipment and network side equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102083161A (en) * | 2009-11-30 | 2011-06-01 | 中国移动通信集团广西有限公司 | Method, system for updating cell in TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) network and user equipment |
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| CN1980467A (en) * | 2005-12-05 | 2007-06-13 | 大唐移动通信设备有限公司 | Wireless link re-recovering method |
| JP2008079311A (en) * | 2006-09-21 | 2008-04-03 | Asustek Computer Inc | Method and apparatus for detecting radio link failure in wireless communication system |
| EP2026610B1 (en) * | 2007-08-14 | 2014-02-26 | Alcatel Lucent | Method and apparatus for radio link failure recovery in a wireless communication network |
| CN101483927B (en) * | 2008-01-08 | 2011-05-04 | 华为技术有限公司 | Method and apparatus for detecting wireless link failure |
| CA2712551A1 (en) * | 2008-01-18 | 2009-08-06 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for radio link failure recovery in a telecommunication system |
| US8842546B2 (en) * | 2010-07-22 | 2014-09-23 | Mediatek Inc. | Method for wireless communication in a device with co-existence radio |
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|---|---|---|---|---|
| CN102083161A (en) * | 2009-11-30 | 2011-06-01 | 中国移动通信集团广西有限公司 | Method, system for updating cell in TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) network and user equipment |
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