CN106162762B - A kind of method and device of determining switching timing time - Google Patents
A kind of method and device of determining switching timing time Download PDFInfo
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- CN106162762B CN106162762B CN201510140210.5A CN201510140210A CN106162762B CN 106162762 B CN106162762 B CN 106162762B CN 201510140210 A CN201510140210 A CN 201510140210A CN 106162762 B CN106162762 B CN 106162762B
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Abstract
The embodiment of the invention discloses the method and devices of determining switching timing time a kind of, this method comprises: obtaining adjacent area preamble resource allocation information；According to the adjacent area preamble resource allocation information of the acquisition and preset algorithm, switching timing temporal reference value is calculated；The switching timing time is determined according to the switching timing temporal reference value and system configuration of the calculating.The embodiment of the present invention can adaptively adjust the switching timing time based on adjacent area preamble resource allocation information, so as to avoid causing the UE that should carry out link re-establishment in time that cannot rebuild in time due to the switching timing time being arranged excessive, to improve user's perception, and, can be avoided because the switching timing time setting it is too small caused by handover failure, to improve network performance.
Description
Technical field
The present invention relates to wireless communication field more particularly to a kind of method and devices of determining switching timing time.
Background technique
Timer relevant to switching is T304 timer in LTE system, is defined as: UE waits the timing switched successfully
Device length (The Timer for UE to Wait for Handover Successfully) is a interior, different with LTE system
System switching or CCO (Cell Change Order, Cell Change Order) assist different system to redirect relevant parameter.
When the timer changes order (CCO) and arrive for switching, switching in LTE and different system cell in LTE system
GSM can just terminate the timer when only operating successfully, which then means the failure accordingly to interoperate, with
And a series of subsequent reconfigure can be caused.If the value setting is excessive, although will increase handover success probability, same meeting
Prevent the UE that should carry out link re-establishment in time from rebuilding in time, to seriously affect user's perception.Similarly, be arranged it is too small then very
It is easy triggering handover failure, not only influences handover success rate, may interfere with user's perception to a certain extent.
200ms is uniformly set by T304 at TD-LTE networking initial stage for the ease of management.But unified setting for
Certain specific scenes are simultaneously unreasonable, for example there is no the configuration information for referring to adjacent area, especially adjacent area is leading (preamble)
The configuration information of resource.In the complicated network structure, the region of multiple small area overlapping covering, due to touching for adjacent area preamble resource
It hits, uplink synchronous time delay is caused to lengthen, at this point, the timer T304 for being responsible for control switching under connected state just seems shorter, from
And handover success rate is influenced, cause the unnecessary risk that goes offline.
In addition, LTE introduces timer 304 to control " switching in E-UTRAN " and " between the system for switching in E-UTRAN
Switching ", UE set the waiting time of message receiving the RRC connection reconfiguration with " mobilityControlInfo ".The timer
It can stop after the random access for completing new cell, UE need to restore former cell configuration concurrency and play RRC reconstruction to ask after timer expiry
It asks.Since LTE supports the random access of both of which: competitive random access and noncompetitive random access.Competitiveness with
In machine access procedure, UE random selection random access lead code, this may cause multiple UE and uses before the same random access
Leading code and lead to random access collision, need to increase subsequent random access contention resolved process thus.Noncompetitive random
In access procedure, eNodeB is that each UE for needing random access distributes a unique random access lead code, is avoided not
Conflict is generated in access procedure with UE, thus random access can be quickly finished.If certain scene simultaneously support two kinds with
Machine access module, then eNodeB can preferentially select noncompetitive random access, only inadequate in noncompetitive random access resource
When distribution, just indicate that UE initiates competition random access.Both modes will have a direct impact on the access that terminal is switched in new cell
Time delay, the excessive handover failure that will lead to of timer waiting time setting can not retract in time and initiate RRC connection reestablishment procedure,
The too small terminal that will lead to is arranged to abandon successfully switching trial and initiating RRC connection reconstruction too early too early, leads to network KPI
Deteriorate, thus the switching timing time span of T304 timer also should be different, but not yet proposes relevant technology at present
Scheme.
Summary of the invention
In view of this, the embodiment of the present invention provides to solve existing technical problem:
A kind of method of determining switching timing time, comprising:
Obtain adjacent area preamble resource allocation information；
According to the adjacent area preamble resource allocation information of the acquisition and preset algorithm, switching timing time ginseng is calculated
Examine value；
The switching timing time is determined according to the switching timing temporal reference value and system configuration of the calculating.
In one specific embodiment, the adjacent area preamble resource allocation information includes following one or more: physics with
Machine accesses the hybrid automatic repeat-request HARQ maximum transmitted time of channel PRACH configuration index, leading maximum transmission times, Msg3
Number.
In one specific embodiment, switching timing is determined according to the switching timing temporal reference value and system configuration of the calculating
Time, comprising:
The switching timing temporal reference value is compared with the switching timing time that system is supported, selection is not less than institute
Switching timing temporal reference value is stated, and the difference between the switching timing temporal reference value is no more than other systems support
The switching timing time that the system of difference is supported between switching timing time and the switching timing temporal reference value is as switching
Timing.
In one specific embodiment, when resource allocation information changes when adjacent area, the switching timing time is redefined.
The embodiment of the present invention also proposed the device of determining switching timing time a kind of, comprising: data obtaining module, calculating
Module and determining module；Wherein,
The data obtaining module, for obtaining adjacent area preamble resource allocation information；
The computing module, for according to the adjacent area preamble resource allocation information of the acquisition and preset algorithm,
Calculate switching timing temporal reference value；
The determining module, for determining that switching is fixed according to the switching timing temporal reference value and system configuration of the calculating
When the time.
In one specific embodiment, the data obtaining module, be specifically used for obtaining following one or more: physical accidental is connect
Enter the hybrid automatic repeat-request HARQ maximum transmission times of channel PRACH configuration index, leading maximum transmission times, Msg3.
In one specific embodiment, the determining module is specifically used for the switching timing temporal reference value and system branch
The switching timing time held is compared, and selection is not less than the switching timing temporal reference value, and when with the switching timing
Between switching timing time for supporting no more than other systems of difference between reference value and the switching timing temporal reference value it
Between difference system support the switching timing time as the switching timing time.
In one specific embodiment, the determining module is also used to when adjacent area resource allocation information changes, again really
Determine the switching timing time.
The embodiment of the present invention determines the method and device of switching timing time, obtains the resource distribution of adjacent area preamble
Information；According to the adjacent area preamble resource allocation information of the acquisition and preset algorithm, switching timing time reference is calculated
Value；The switching timing time is determined according to the switching timing temporal reference value and system configuration of the calculating.The embodiment of the present invention can
Adaptively to adjust the switching timing time based on adjacent area preamble resource allocation information, when so as to avoid because of switching timing
Between be arranged excessive and cause the UE that should carry out link re-establishment in time that cannot rebuild in time, to improve user's perception, also, energy
Enough avoid because the switching timing time be arranged it is too small caused by handover failure, to improve network performance.
Detailed description of the invention
Fig. 1 is a kind of method flow schematic diagram of determining switching timing time of the embodiment of the present invention；
Fig. 2 is a kind of apparatus structure schematic diagram of determining switching timing time of the embodiment of the present invention；
Fig. 3 is the method flow schematic diagram of determination switching timing time described in the embodiment of the present invention 1.
Specific embodiment
In order to avoid causing the UE that should carry out link re-establishment in time cannot be timely due to the switching timing time being arranged excessive
Rebuild, and avoid being arranged because of the switching timing time it is too small caused by handover failure, the embodiment of the present invention propose it is a kind of really
Determine the method for switching timing time, as shown in Figure 1, this method comprises:
Step 101: obtaining adjacent area preamble resource allocation information；
Step 102: according to the adjacent area preamble resource allocation information of the acquisition and preset algorithm, it is fixed to calculate switching
When temporal reference value；
Step 103: the switching timing time is determined according to the switching timing temporal reference value and system configuration of the calculating.
It should be noted that the timing phase of switching timing time described in the embodiment of the present invention and timer T304
It is corresponding.
In one specific embodiment, the adjacent area preamble resource allocation information includes following one or more: physics with
Machine accesses channel PRACH configuration index (RACH-configDedicated), leading maximum transmission times
(preambleTransMax), the hybrid automatic repeat-request HARQ maximum transmission times (maxHARQ-Msg3Tx) of Msg3.Its
In:
RACH-configDedicated belongs to RACH configuration information, when PRACH configuration index configurations instruction is equal to CFG
When, the value that PRACH configures index configurations is just effective；Otherwise the value of PRACH configuration index configurations is invalid；preambleTransMax
Belong to RACH configuration information；MaxHARQ-Msg3Tx belongs to RACH configuration information.
It should be noted that according to the adjacent area preamble resource allocation information of the acquisition and in advance described in step 102
If algorithm, calculate switching timing temporal reference value, i.e., by the RACH-configDedicated and other letters of neighbor cell configuration
Breath uniformly considers process institute relevant to these parameters such as essential informations such as preambleTransMax, maxHARQ-Msg3Tx
The time needed, then in conjunction with the time that related procedure is related to, when unifiedly calculating one required for new cell access procedure
Between be used as switching timing temporal reference value.
It is true according to the switching timing temporal reference value and system configuration of the calculating in step 103 in one specific embodiment
Determine the switching timing time, comprising:
The switching timing temporal reference value is compared with the switching timing time that system is supported, selection is not less than institute
Switching timing temporal reference value is stated, and the difference between the switching timing temporal reference value is no more than other systems support
The switching timing time that the system of difference is supported between switching timing time and the switching timing temporal reference value is as switching
Timing.Here, according to system configuration, the waiting time that T304 is supported may include 50ms, 100ms, 150ms, 200ms,
500ms、1000ms、2000ms。
In one specific embodiment, when resource allocation information changes when adjacent area, the switching timing time is redefined.
The embodiment of the present invention also correspondingly proposes the device of determining switching timing time a kind of, as shown in Fig. 2, the device
It include: data obtaining module 21, computing module 22 and determining module 23；Wherein,
The data obtaining module 21, for obtaining adjacent area preamble resource allocation information；
The computing module 22, for according to the adjacent area preamble resource allocation information of the acquisition and preset calculation
Method calculates switching timing temporal reference value；
The determining module 23 switches for being determined according to the switching timing temporal reference value and system configuration of the calculating
Timing.
In one specific embodiment, the data obtaining module 21 is specifically used for obtaining following one or more: physical accidental
Access the hybrid automatic repeat-request HARQ maximum transmitted time of channel PRACH configuration index, leading maximum transmission times, Msg3
Number.
In one specific embodiment, the determining module 23 is specifically used for the switching timing temporal reference value and system
The switching timing time of support is compared, selection be not less than the switching timing temporal reference value, and with the switching timing
Switching timing time of the difference no more than other systems support and the switching timing temporal reference value between temporal reference value
Between difference system support the switching timing time as the switching timing time.
In one specific embodiment, the determining module 23 is also used to when adjacent area resource allocation information changes, again
Determine the switching timing time.
Technical solution of the present invention is described in further detail below by specific embodiment.
Embodiment 1
Fig. 3 show the method flow schematic diagram of determination switching timing time described in the embodiment of the present invention 1, such as Fig. 3 institute
Show, which includes:
Step 301: obtaining RACH-configDedicated configuration information.
The setting of T304 needs to take into account above three factor the reasonable value of setting one and guarantees that each parameter is related to
Otherwise the execution of detailed process or causes partial parameters setting invalid or leads to excessive redundancy time delay, influences terminal initiation
The timeliness of reconstruction.
Whether the Msg 1 that RACH-configDedicated configuration information is related to when terminal initiates random access can occur
Collision, if it is competition-based, it may occur that collision has the demand of Mac contention resolution naturally,
Just need to be related to the configuration of another timer value, the i.e. configuration of Mac-ContentionResolution Timer；Mac-
After ContentionResolution Timer time-out, terminal, which can reattempt to, initiates Msg1 (if Msg1 the number of transmissions does not have
More than the maximum times of network side configuration), the setting needs of T304 timing take into account the timer.
Step 302: obtaining PremableTransMax configuration information.
PremableTransMax configuration information, which is related to terminal, can attempt to send the maximum times of Preamble number,
For example the time of each Preabmle to Preamble next time is that (there are dynamic ranges to determine and terminal oneself by 10~20ms
Backoff time delay), if network configuration terminal maximum number of times of transmission is 8 times, the setting of T304 timing needs to consider terminal
Complete the time required for all attempting.
Step 303: obtaining the configuration information of maxHARQ-Msg3Tx.
MaxHARQ-Msg3Tx configuration information is related to terminal when can be during terminal is in multi-upstream access, uplink synchronous
Prolong.Msg3 be support HARQ, therefore network side configuration maximum retransmission, influence whether required for Msg3 Successful transmissions
Maximum time, the setting of T304 timing need to take into account number of retransmissions.
Step 304: verifying the now relevant basic configuration information of net LTE cell T304 timer, it is small that all LTE are now netted in acquisition
The duration of area's T304 timer is arranged.
Step 305: carrying out new cell access procedure time delay assessment, i.e., according to the preset calculation of configuration information machine of the acquisition
Method calculates switching timing temporal reference value.
Here, when can refer to the time delay, the user face that are transformed into active state from idle state using Attach access delay, UE
Prolong, wherein being transformed into the time delay of active state, this index from idle state with reference to UE to new cell access procedure time delay assessment emphasis
It indicates that UE is transformed into the time of active state from idle state, directly affects the time delay of the processes such as calling (E-RAB) foundation, TAU, be
Measure one of the important indicator of user network access delay impression.
Step 306: the switching timing time is determined according to the switching timing temporal reference value and system configuration of the calculating.
Specifically, timer (T304) waiting time that switching timing temporal reference value is supported with system is compared,
Selection is not less than the switching timing temporal reference value, and the difference between the switching timing temporal reference value is not more than it
The switching timing that the system of difference is supported between the switching timing time and the switching timing temporal reference value of his system support
Time is as the switching timing time.
It should be noted that the switching timing time can also be directly set with reference to the configuration of preamble in adjacent area, such as
It is competition-based to need to configure as 500ms, then 200ms is configured to based on non-competing.
According to foregoing description, timer T304 can be arranged different based on the difference of adjacent area resource distribution in LTE network
It waiting time, and the adjustment that the T304 waiting time can be adaptive with the variation of neighbor cell configuration information, is determined so as to solve
When the device waiting time setting it is excessive will lead to handover failure can not retract in time and initiate RRC connection reestablishment procedure, setting it is too small
It will lead to terminal to abandon successfully switching trial and initiating RRC connection reconstruction too early too early, lead to asking for network KPI deterioration
Topic.Also, this method considers the principal element for influencing random access time delay, and fully considers these because T304 etc. is usually arranged
The robustness and user experience of network are effectively improved to time span.
Above-mentioned each unit can by electronic equipment central processing unit (Central Processing Unit, CPU),
Digital signal processor (Digital Signal Processor, DSP) or programmable logic array (Field-
Programmable Gate Array, FPGA) it realizes.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, the shape of hardware embodiment, software implementation or embodiment combining software and hardware aspects can be used in the present invention
Formula.Moreover, the present invention, which can be used, can use storage in the computer that one or more wherein includes computer usable program code
The form for the computer program product implemented on medium (including but not limited to magnetic disk storage and optical memory etc.).
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (6)
1. a kind of method of determining switching timing time, which is characterized in that this method comprises:
Obtain adjacent area preamble resource allocation information；
According to the adjacent area preamble resource allocation information of the acquisition and preset algorithm, switching timing time reference is calculated
Value；
The switching timing time is determined according to the switching timing temporal reference value and system configuration of the calculating, comprising:
The switching timing temporal reference value is compared with the switching timing time that system is supported, selection is cut not less than described
Timing reference value is changed, and the difference between the switching timing temporal reference value is no more than other switchings that system is supported
The switching timing time that the system of difference is supported between timing and the switching timing temporal reference value is as switching timing
Time.
2. the method according to claim 1, wherein the adjacent area preamble resource allocation information includes following
One or more: Physical Random Access Channel PRACH configures the mixed automatic retransfer of index, leading maximum transmission times, Msg3
Request HARQ maximum transmission times.
3. according to claim 1 to 2 described in any item methods, which is characterized in that when adjacent area, resource allocation information changes
When, redefine the switching timing time.
4. a kind of device of determining switching timing time, which is characterized in that the device includes: data obtaining module, computing module
And determining module；Wherein,
The data obtaining module, for obtaining adjacent area preamble resource allocation information；
The computing module, for calculating according to the adjacent area preamble resource allocation information of the acquisition and preset algorithm
Switching timing temporal reference value；
The determining module, when for determining switching timing according to the switching timing temporal reference value and system configuration of the calculating
Between；
The determining module is carried out specifically for the switching timing time for supporting the switching timing temporal reference value and system
Compare, selection is not less than the switching timing temporal reference value, and the difference between the switching timing temporal reference value is not
What the system of difference was supported between other switching timing times supported greater than system and the switching timing temporal reference value cuts
Timing is changed as the switching timing time.
5. device according to claim 4, which is characterized in that
The data obtaining module, be specifically used for obtaining following one or more: Physical Random Access Channel PRACH configures rope
Draw, the hybrid automatic repeat-request HARQ maximum transmission times of leading maximum transmission times, Msg3.
6. according to the described in any item devices of claim 4 to 5, which is characterized in that
The determining module is also used to redefine the switching timing time when adjacent area resource allocation information changes.
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| CN108668297B (en) * | 2017-03-29 | 2021-11-02 | 中国移动通信集团贵州有限公司 | Method, device and system for adjusting wireless switching timer |
| EP3639560B1 (en) | 2017-06-15 | 2024-05-22 | LG Electronics Inc. | Method for performing a handover procedure in a wireless communication system and a device therefor |
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| WO2011039960A1 (en) * | 2009-10-02 | 2011-04-07 | 三菱電機株式会社 | Mobile communication system |
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