CN103503517A - Method and device for optimizing different-frequency handover time delay - Google Patents
Method and device for optimizing different-frequency handover time delay Download PDFInfo
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- CN103503517A CN103503517A CN201280000274.XA CN201280000274A CN103503517A CN 103503517 A CN103503517 A CN 103503517A CN 201280000274 A CN201280000274 A CN 201280000274A CN 103503517 A CN103503517 A CN 103503517A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0088—Scheduling hand-off measurements
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Abstract
Disclosed are a method and device for optimizing different-frequency handover delay. In the method, a user equipment(UE) sends event A4 measurement report to an eNode B at a predetermined time delayed, and the predetermined time is equal to time to trigger measurement report of event A4 minus the measurement gap delay time; the UE receives handover order that is sent when the eNode B makes successfully handover decision according to the event A4 measurement report. The technical project provided by the present invention may optimize the different-frequency handover time delay of UE.
Description
A kind of method and apparatus for optimizing alien frequencies handover delay
Technical field
The present invention relates to moving communicating field, more particularly to a kind of technology for optimizing alien frequencies handover delay.
Background technology
User equipment (English be User Equipment, abbreviation UE) only one of which signal receiver under normal circumstances, the signal on same frequency can only be received in synchronization.Therefore, in Long Term Evolution（English be Long Term Evolution, abbreviation LTE) carry out alien frequencies switching when, above-mentioned UE needs to be periodically turned on gap（English be GAP) pattern go measure neighbor cell information, be easy to the switching of alien frequencies.
GAP is just so that above-mentioned UE leaves the period that current measurement frequency point is measured to other frequencies to neighbor cell.When the serving cell quality where above-mentioned UE is poor, evolution base station（English is evolved Node B, abbreviation eNB) the relevant configuration configured information that issue above-mentioned GAP patterns will be indicated to start GAP patterns to above-mentioned UE, above-mentioned UE according to above-mentioned eNB configuration.
At present, when UE meets the condition of alien frequencies switching, eNB to above-mentioned UE when issuing switching command, may by above-mentioned UE use GAP patterns carry out different-frequency measure when be influenceed and cause switching command above-mentioned UE progress GAP patterns terminate after be just handed down to above-mentioned UE, now, above-mentioned UE alien frequencies switching will have a switching time delay.Above-mentioned UE opportunitys of reporting measurement reports after GAP patterns terminate voluntarily are controlled by above-mentioned UE.So, eNB, which issues switching command, will randomly meet above-mentioned UE startup GAP patterns progress different-frequency measure, so as to add the switching time delay of user plane.
The content of the invention
Embodiments of the invention issue the probability that switching command meets UE startup GAP pattern progress different-frequency measures at random to reduce eNB, so as to reduce the time delayses of alien frequencies switching.The embodiment of the present invention provides a kind of method, equipment for optimizing alien frequencies handover delay.
On the one hand the embodiment of the present invention provides a kind of method for optimizing alien frequencies handover delay, and this method includes：User equipment delay is specified to evolution base station transmission A4 event measurement reports after the time, when this is specified
Between be equal to above-mentioned A4 affairs ^ it is blunt accuse the triggered time subtract measurement gap delay；
Above-mentioned user equipment receives switching command, and the switching command is according to above-mentioned in above-mentioned evolution base station
A4 event measurement reports switch over what is sent under judgement successful instance.
Using technical scheme provided in an embodiment of the present invention, user equipment subtracts measurement gap delay on the existing A4 event measurement reports triggered time, it can control to report A4 event measurement reports in advance, so that when evolution base station judges that user equipment meets the condition of alien frequencies switching, switching command is issued in advance, reduce when evolution base station issues switching command and run into the probability of GAP patterns, so as to reduce the time delayses of user equipment alien frequencies switching.
The embodiment of the present invention is on the other hand there is provided a kind of method for optimizing alien frequencies handover delay, and this method includes：
Evolution base station receives A4 event measurement reports, and the A4 event measurement reports are delayed after the time of specifying by user equipment and sent, and this specifies the time to subtract measurement gap delay equal to the above-mentioned A4 event measurement reports triggered time；
Above-mentioned evolution base station handles above-mentioned A4 event measurement reports and carries out switch decision, if adjudicating successfully, and above-mentioned evolution base station sends switching command to above-mentioned user equipment.
Using technical scheme provided in an embodiment of the present invention, user equipment subtracts measurement gap delay on the existing A4 event measurement reports triggered time, it can control to report A4 event measurement reports in advance, so that when evolution base station judges that user equipment meets the condition of alien frequencies switching, switching command is issued in advance, it can reduce when evolution base station issues switching command and run into the probability of GAP patterns, so as to reduce the time delayses of user equipment alien frequencies switching.
On the other hand there is provided a kind of user equipment for the embodiment of the present invention.The user equipment includes：First transmitter, the first transmitter is used to send A4 event measurement reports to evolution base station；First receiver, first receiver is used to receive switching command, and the switching command is sent when being switched over and adjudicated successfully according to above-mentioned A4 event measurement reports by evolution base station；
First processor, the first processor is used to control above-mentioned first transmitter delay to specify to the above-mentioned A4 event measurement reports of above-mentioned evolution base station transmission after the time, and the specified time is equal to the A4 things
Part is measured, and " the announcement triggered time subtracts measurement gap delay.
Using base station provided in an embodiment of the present invention, user equipment subtracts measurement gap delay on the existing A4 event measurement reports triggered time, it can control to report A4 event measurement reports in advance, so that when base station judges that user equipment meets the condition of alien frequencies switching, switching command can be issued, reduce when base station issues switching command and run into the probability of GAP patterns, so as to reduce the time delayses of user equipment alien frequencies switching.
On the other hand there is provided a kind of base station for the embodiment of the present invention.The base station includes：
Second receiver, second receiver is used to receive A4 event measurement reports, the A4 event measurement reports are delayed after the time of specifying by user equipment and sent, and this specifies the announcement triggered time blunt equal to above-mentioned A4 affairs ^ time to subtract measurement gap delay；
Second transmitter, the second transmitter is used to send switching command to above-mentioned user equipment；Second processor, the second processor is used to handle the blunt announcements of above-mentioned A4 affairs ^ and wakes up with a start switch decision, when adjudicating successfully, controls above-mentioned second transmitter to send switching command to above-mentioned user equipment.
Using base station provided in an embodiment of the present invention, user equipment subtracts measurement gap delay on the existing A4 event measurement reports triggered time, it can control to report A4 event measurement reports in advance, so that when base station judges that user equipment meets the condition of alien frequencies switching, switching command can be issued, reduce when base station issues switching command and run into the probability of GAP patterns, so as to reduce the time delayses of user equipment alien frequencies switching.
Brief description of the drawings
Fig. 1 is the system framework figure of the embodiment of the present invention；
Fig. 2 is the schematic diagram of handoff procedure in LTE system provided in an embodiment of the present invention.
Fig. 3 is a kind of method flow schematic diagram for optimization alien frequencies handover delay that the embodiment of the present invention one is provided；
Fig. 4 is a kind of method flow schematic diagram for optimization alien frequencies handover delay that the embodiment of the present invention two is provided；
Fig. 5 is a kind of method flow schematic diagram for optimization alien frequencies handover delay that the embodiment of the present invention three is provided；
Fig. 6 is a kind of structural representation for user equipment that the embodiment of the present invention four is provided；
Fig. 7 is a kind of structural representation for base station that the embodiment of the present invention five is provided.Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, specific embodiment as described below is only a part of embodiment of the present invention, for a person skilled in the art, and the present invention can also be not limited to the other embodiments of these specific details to implement.
The network frame for the LTE system that the embodiment of the present invention is based on, as shown in figure 1, access network is made up of eNB.Access network provides the user plane and chain of command agreement to UE.Interaction between eNB passes through X2 interface.ENB is connected by S1 interface kernel nets equipment, specifically and mobile management entity（English is Mobility Management Entity, abbreviation MME) connection for S1-MME, with gateway（English is Serving Gateway, referred to as S-GW) connection for Sl-U.SI interfaces support MME/S-GW the and eNB annexations of multi-to-multi.
The UE switching in LTE system, according to serving cell and the frequency relation of adjacent cell, can be divided into frequency switching and alien frequencies switching.UE handoff procedure includes handover measurement, switch decision and switching execution in LTE system.Handover measurement is completed by UE and eNB.Switch decision is carried out in the enb.Switching is performed to be completed under UE, eNB and MME jointly cooperation.As shown in Fig. 2 in LTE system, handover measurement passes through access network（Generally base station, but be not limited to base station）" measurement control " and " measurement report " this two classes message between UE interact to complete.Measurement control, is to access the measurement request that net side is handed down to UE.Measurement report, is after UE is measured according to the measurement request in measurement control, to report the measurement result of access network.When UE uses the mode of affair, UE roots
Event evaluation is carried out according to event triggering criterion.When the event triggering criterion for accessing net side requirement is met,
UE sends measurement report message to access net side.
A2 events are used for alien frequencies, the startup of isosystem measurement in LTE system.When serving cell quality is less than the thresholding that system is specified, A2 events are triggered between UE and access net side.A4 events are used for alien frequencies, different system and switched.When neighbor cell quality is higher than another thresholding that system is specified, UE and access net side triggering A4 events.Embodiments of the invention one, there is provided a kind of method for optimizing alien frequencies handover delay as shown in Figure 3.This method includes herein below.
511, when the adjacent cell quality that user equipment different-frequency measure is obtained is higher than system appointed threshold, user equipment delay is specified after the time to evolution base station transmission A4 event measurement reports.This specifies the time to subtract measurement gap delay equal to the A4 event measurement report triggered times（Such as GapToDelay).
512, the user equipment receives switching command, is sent when being made decisions successfully during the switching command by above-mentioned evolution base station according to above-mentioned A4 event measurement reports.
In the embodiment of the present invention one, user equipment carries out the adjacent cell quality of different-frequency measure, for LTE systems, is typically weighed by reference to signal reception power or Reference Signal Received Quality.The quality of adjacent cell（Such as Reference Signal Received Power or Reference Signal Received Quality）The thresholding specified higher than system, triggers A4 events.In existing procedure, the user equipment delay A4 event measurement report triggered times（For example：TimeToTrigger after), A4 event measurement reports are sent to evolution base station.The A4 event measurement report triggered times are generally used for avoiding " pingpang handoff " problem in handoff procedure, and delay time span is big.In the embodiment of the present invention one, measurement gap delay is subtracted on the triggered time in existing A4 affairs 4 blunt accuse, can be on the basis of the A4 event measurement report triggered times, the time for controlling user equipment A4 event measurement reports to send in advance.
Hereinafter with heretofore described similar procedure, such as unnecessary no longer Redundant is stated.
The technical scheme provided using the embodiment of the present invention one, subtracts measurement gap delay so that user equipment can report A4 affair reports in advance on the basis of the existing A4 measurement reports triggered time
Accuse, so that when evolution base station judges that user equipment meets the condition of alien frequencies switching, switching command is issued in advance, it is possible to reduce evolution base station runs into the probability of GAP patterns when issuing switching command, so as to reduce the time delayses of user equipment alien frequencies switching.Embodiments of the invention two, there is provided a kind of method for optimizing alien frequencies handover delay as shown in Figure 4.The embodiment of the present invention two may be considered some specific embodiments that provide being delayed on the basis of the embodiment of the present invention one to measurement gap, and above-mentioned measurement gap delay is handled the time of A4 event measurement reports with reference to the time of above-mentioned user equipment processing different-frequency measure and/or above-mentioned evolution base station by evolution base station and determined.
In an implement scene of the embodiment of the present invention, above-mentioned measurement gap delay is handled the time of different-frequency measure and/or the time of the blunt announcement of above-mentioned evolution base station processing A4 affair ability with reference to above-mentioned user equipment by evolution base station and determined, including：
521, evolution base station sets hunting zone on the basis of above-mentioned user equipment handles the time of different-frequency measure and/or above-mentioned evolution base station handles the time of above-mentioned A4 event measurement reports.
522, if searching the time value for meeting alien frequencies handover delay requirement in above-mentioned hunting zone, the delay of above-mentioned measurement gap is set to the time value for meeting alien frequencies handover delay requirement by above-mentioned evolution base station.
For example, evolution base station can handle user equipment time and the temporal summation of above-mentioned evolution base station processing A4 event measurement reports of different-frequency measure.Regular hour is increased or decreased by this as needed with the basis of（Such as 0 a certain number into 100ms）Result afterwards as hunting zone border.In this hunting zone, one initial time value can be set in advance, this initial time value is delayed temporarily as measurement gap, perform the action in embodiment of the method one, if the time delay of final alien frequencies switching is unsatisfactory for the time value of alien frequencies handover delay requirement, this initial time value is then increased or decreased in hunting zone, this initial time value increased or decreased is delayed as measurement gap again, and perform the action in embodiment of the method one, when untill finding the time value for meeting alien frequencies handover delay requirement, this initial time value after this adjustment can be just measurement gap delay.According to this method
Determine that measurement gap is delayed, it can be a value or a range of value.
As an example, said reference can also be the time that the time of user equipment processing different-frequency measure or evolution base station handle A4 event measurement reports.
The technical scheme that the embodiment of the present invention two is provided, specifically discloses the example that measurement gap delay is determined in the embodiment of the present invention one on the basis of embodiments of the invention one.
The technical scheme provided using the embodiment of the present invention two, measurement gap delay is subtracted on the basis of the existing A4 measurement reports triggered time, user equipment is allowd to report A4 event measurement reports in advance, so that when evolution base station judges that user equipment meets the condition of alien frequencies switching, switching command is issued in advance, it can reduce when evolution base station issues switching command and run into the probability of GAP patterns, so as to reduce the time delayses of user equipment alien frequencies switching.Embodiments of the invention three, there is provided a kind of method for optimizing alien frequencies handover delay as shown in Figure 5.The embodiment of the present invention three may be considered further provides some more specifically embodiments on the basis of the embodiment of the present invention one or embodiment two, for identical part described in the embodiment of the present invention one or the embodiment of the present invention two, it can refer to described in above-described embodiment one, the no longer Redundant of the embodiment of the present invention three is stated.The embodiment of the present invention three includes herein below.
531, user equipment sends A2 event measurement reports to evolution base station.Above-mentioned A2 affairs accuse the time that the user equipment handles different-frequency measure that carries.
The quality of serving cell where user equipment is less than the thresholding that system is specified, and will trigger A2 events.User equipment can report the quality of current service cell to evolution base station.
532, above-mentioned user equipment receives measurement control message.
The measurement control message according to above-mentioned A2 event measurement reports match somebody with somebody by above-mentioned evolution base station postpones transmission.The measurement control message carries measurement gap delay.Measurement gap delay can handle the time of different-frequency measure and the time of the blunt announcement of evolution base station processing A4 affair ability with reference to the user equipment by evolution base station and determine.It for details, reference can be made to described in embodiments of the invention two.
533, above-mentioned user equipment starts clearance mode and carries out alien frequencies survey according to above-mentioned measurement control message
Amount, when above-mentioned user equipment is higher than the thresholding that system is specified in the adjacent cell quality that above-mentioned clearance mode different-frequency measure is obtained, above-mentioned user equipment postpones after the above-mentioned specified time to the above-mentioned A4 event measurement reports of above-mentioned evolution base station transmission.
Above-mentioned user equipment has related parameter to configure gap (GAP) pattern according to above-mentioned measurement control message, the cycle in such as gap, the duration in gap etc..When above-mentioned user equipment carries out the adjacent cell quality of different-frequency measure in clearance mode（For example：Reference Signal Received Quality or Reference Signal Received Power）The thresholding specified higher than system, above-mentioned user equipment delay was specified after the time, and A4 event measurement reports are sent to evolution base station.The above-mentioned specified time subtracts above-mentioned measurement gap delay equal to the A4 event measurement report triggered times.
S34, above-mentioned user equipment receives the switching command sent by above-mentioned evolution base station.
Above-mentioned evolution base station judges whether above-mentioned user equipment meets switching condition according to the result of A4 event measurement reports.When above-mentioned evolution base station judges that above-mentioned user equipment meets switching condition, above-mentioned evolution base station issues switching command to above-mentioned user equipment.When above-mentioned evolution base station judges that above-mentioned user equipment is unsatisfactory for switching condition（Such as adjacent cell resource is unavailable) when, above-mentioned evolution base station waits the A4 events that clearance mode measurement next time is reported, untill above-mentioned evolution base station judges that above-mentioned user equipment meets switching condition.
In the embodiment of the present invention three, user equipment carries out the adjacent cell quality of different-frequency measure, for LTE systems, is typically weighed by reference to signal reception power or Reference Signal Received Quality.The quality of adjacent cell（Such as Reference Signal Received Power or Reference Signal Received Quality）The thresholding specified higher than system, triggers A4 events.In existing handling process, the user equipment delay A4 event measurement report triggered times（For example：TimeToTrigger after), A4 event measurement reports can be sent to evolution base station.The A4 event measurement report triggered times are generally used for avoiding " pingpang handoff " problem in handoff procedure, and delay time span is big.In the embodiment of the present invention three, user equipment can subtract measurement gap delay on the basis of the A4 event measurement report triggered times, so that user equipment reports A4 event measurement reports in advance, so that when evolution base station judges that user equipment meets the condition of alien frequencies switching, switching command is issued in advance, the probability that GAP patterns are run into when evolution base station issues switching command can be reduced
So as to reduce the time delayses of user equipment alien frequencies switching.Embodiments of the invention four and embodiment five are the corresponding device embodiments of embodiment of the method, for what is illustrated in embodiment of the method, can refer to embodiment of the method and illustrate accordingly, the embodiment of the present invention four and embodiment five are repeated no more.
Embodiments of the invention four, as shown in Figure 6 there is provided a kind of user equipment 40, including：First transmitter 401, the first transmitter 401 is used to send A4 event measurement reports to evolution base station.
First receiver 402, first receiver 402 is used to receive switching command.The switching command is sent when being switched over and adjudicated successfully according to the A4 event measurement reports by above-mentioned evolution base station.
First processor 403, the first processor 403 is used to control above-mentioned first transmitter delay to specify to the above-mentioned A4 event measurement reports of above-mentioned evolution base station transmission after the time, and the specified time is equal to above-mentioned A4 affairs>Accuse triggering and subtract measurement measurement gap delay.
In an implement scene of the embodiment of the present invention, above-mentioned measurement gap delay is handled the time of different-frequency measure and/or the time of the above-mentioned A4 event measurement reports of above-mentioned evolution base station processing with reference to above-mentioned user equipment by above-mentioned evolution base station and determined, specifically includes：
Evolution base station sets hunting zone on the basis of user equipment handles the time of different-frequency measure and/or above-mentioned evolution base station handles the time of above-mentioned A4 event measurement reports；If searching the time value for meeting alien frequencies handover delay requirement in above-mentioned hunting zone, the delay of above-mentioned measurement gap is set to the above-mentioned time value for meeting alien frequencies handoff delay requirement by above-mentioned evolution base station, and detailed process can be found in embodiment of the method.
Above-mentioned first transmitter 401 is additionally operable to send A2 event measurement reports to above-mentioned evolution base station, and above-mentioned A2 event measurement reports carry the time that above-mentioned user equipment handles different-frequency measure；Above-mentioned first receiver 402 is additionally operable to receive measurement control message, and the measurement control message is carried out with transmission is postponed by above-mentioned evolution base station according to above-mentioned A2 event measurement reports, and the measurement control message carries above-mentioned measurement gap delay；Above-mentioned first processor 403 is additionally operable to according to above-mentioned measurement control message, is started clearance mode and is carried out different-frequency measure, when above-mentioned user equipment is high in the adjacent cell quality of above-mentioned clearance mode different-frequency measure
When system appointed threshold, above-mentioned first processor 403 controls above-mentioned first transmitter to postpone after the specified time to the evolution base station transmission A4 event measurement reports.
The action that the user equipment 40 that the embodiment of the present invention four is provided can perform the embodiment of the present invention one, user equipment is performed in method described in embodiment two or embodiment three, specifically can refer to the description in above method embodiment.Above-mentioned user equipment 40 is included outside first transmitter 401, the first receiver 402 and first processor 403, is the action performed by the user equipment in implementation method embodiment, can also include some structures.The non-limiting example of this class formation can include memory, microprocessor and send circuit of signal etc..
Using user equipment provided in an embodiment of the present invention, user equipment can subtract measurement gap delay on the foundation stone in existing A4 event measurement reports triggered time goes out, allow to report A4 event measurement reports in advance, so that when evolution base station judges that user equipment meets the condition of alien frequencies switching, switching command can be issued in advance, reduce when evolution base station issues switching command and run into the probability of GAP patterns, so as to reduce the time delayses of user equipment alien frequencies switching.Embodiments of the invention five, as shown in Figure 7 there is provided a kind of base station 50, including：
Second receiver 501, second receiver 501 is used to receive A4 event measurement reports, should
A4 event measurement reports are delayed after the time of specifying by user equipment and sent, and the announcement triggered time blunt equal to above-mentioned A4 affairs ^ above-mentioned specified time subtracts measurement gap delay.
Second transmitter 502, the second transmitter 502 is used to send switching command to above-mentioned user equipment.Second processor 503, the second processor 503 is used to handle the blunt announcements of above-mentioned A4 affairs ^ and carries out switch decision, when adjudicating successfully, controls above-mentioned second transmitter 502 to send switching command to above-mentioned user equipment.
In an implement scene of the embodiment of the present invention, above-mentioned second processor 503 can be additionally used in the time for referring to user equipment processing different-frequency measure and/or above-mentioned second processor 503 handles the time of above-mentioned A4 event measurement reports and determines above-mentioned measurement gap delay, specifically include：
Above-mentioned second processor 503 handles the time of different-frequency measure and/or above-mentioned base with above-mentioned user equipment
Hunting zone is set on the basis of the time for the 50 above-mentioned A4 event measurement reports of processing of standing；If searching the time value for meeting alien frequencies handover delay requirement in the hunting zone, the delay of above-mentioned measurement gap is set to the above-mentioned time value for meeting alien frequencies handoff delay requirement by the evolution base station, for details, reference can be made to embodiment of the method
In an implement scene of the embodiment of the present invention, above-mentioned second receiver 501 is additionally operable to receive A2 event measurement reports, and above-mentioned A2 event measurement reports carry the time that above-mentioned user equipment handles different-frequency measure；Above-mentioned second transmitter 502 is additionally operable to send above-mentioned measurement control message to above-mentioned user equipment, and above-mentioned measurement control message carries above-mentioned measurement gap delay；Above-mentioned second processor is additionally operable to according to A2 event measurement reports configuration measurement control message.
The action that the base station 50 that the embodiment of the present invention five is provided is to perform the embodiment of the present invention one, evolution base station is performed in method described in embodiment two or embodiment three, for details, reference can be made to the description in above method embodiment.Above-mentioned base station 50 includes the second receiver 501, outside second transmitter 502 and second processor 503, is the action performed by the evolution base station in implementation method embodiment, can also include some structures.The non-limiting example of this class formation can include memory, microprocessor and send circuit of signal etc..
Using base station provided in an embodiment of the present invention, user equipment can subtract measurement gap delay on the basis of the existing A4 event measurement reports triggered time, user equipment is allowd to report A4 event measurement reports in advance, so that when base station judges that user equipment meets the condition of alien frequencies switching, switching command can be issued, reduce when base station issues switching command and run into the probability of GAP patterns, so as to reduce the time delayses of user equipment alien frequencies switching.Embodiments of the invention six include there is provided a kind of system for realizing optimization alien frequencies handover delay, the system：The base station as described in user equipment and the embodiment of the present invention five as described in the embodiment of the present invention four.
Using system provided in an embodiment of the present invention, user equipment can subtract measurement gap delay on the basis of the A4 event measurement report triggered times, user equipment is allowd to report A4 event measurement reports in advance, so that when base station judges that user equipment meets the condition of alien frequencies switching, switching can be issued
Order, reduces when base station issues switching command and runs into the probability of GAP patterns, so as to reduce the time delayses of user equipment alien frequencies switching.There is provided a kind of computer program product for embodiments of the invention seven.The computer program product includes the code of all or part of method as described in the embodiment of the present invention one, the embodiment of the present invention two or the embodiment of the present invention three；For example, the computer program product can perform the one or more of following method：
1st, a kind of method for optimizing alien frequencies handover delay, including：
User equipment delay is specified to evolution base station transmission A4 event measurement reports after the time, and the announcement triggered time blunt equal to the A4 affairs ^ specified time subtracts measurement gap delay；
The user equipment receives switching command, and the switching command is sent in the case of the evolution base station processing A4 event measurement reports switch over judgement successfully.
2nd, the method as described in 1, the measurement gap delay is handled the time of different-frequency measure and/or the time of the evolution base station processing A4 event measurement reports with reference to the user equipment by the evolution base station and determined.
3rd, the method as described in 2, the measurement gap delay is handled the time of different-frequency measure and/or the time of the evolution base station processing A4 event measurement reports with reference to the user equipment by the evolution base station and determined, including：
The evolution base station sets hunting zone on the basis of the user equipment handles the time of different-frequency measure and/or the evolution base station handles the time of the A4 event measurement reports；
If searching the time value for meeting alien frequencies handover delay requirement in the hunting zone, measurement gap delay is set to the time value for meeting alien frequencies handoff delay requirement by the evolution base station.
4th, the method as described in 1 to 3 any one, before the user equipment postpones to send the A4 event measurement reports to the evolution base station after the specified time, in addition to：
The user equipment sends A2 event measurement reports to the evolution base station, and the A2 event measurement reports carry the time that the user equipment handles different-frequency measure；
The user equipment receives measurement control message, and the measurement control message is by the evolution base station
Carried out according to the A2 event measurement reports with transmission is postponed, the measurement control message carries the measurement gap delay；
The user equipment is according to the measurement control message, start clearance mode and carry out different-frequency measure, when the user equipment is higher than system appointed threshold in the adjacent cell quality of the clearance mode different-frequency measure, the user equipment postpones after the specified time to the evolution base station transmission A4 event measurement reports.
For another example the computer program product can also carry out the one or more of following method：
5th, a kind of method for optimizing alien frequencies handover delay, including：
Evolution base station receives A4 event measurement reports, and the A4 event measurement reports are delayed after the time of specifying by user equipment and sent, and the announcement triggered time blunt equal to the A4 affairs ^ specified time subtracts measurement gap delay；
The evolution base station handles the A4 event measurement reports and carries out switch decision, if adjudicating successfully, and the evolution base station sends switching command to the user equipment.
6th, the method as described in 5, the measurement gap delay is handled the time of different-frequency measure and/or the time of the evolution base station processing A4 event measurement reports with reference to the user equipment by the evolution base station and determined.
7th, the method as described in 6, the measurement gap delay is handled the time of different-frequency measure and/or the time of the evolution base station processing A4 event measurement reports with reference to the user equipment by the evolution base station and determined, including：
The evolution base station sets hunting zone on the basis of the user equipment handles the time of different-frequency measure and/or the evolution base station handles the time of the A4 event measurement reports；
If searching the time value for meeting alien frequencies handover delay requirement in the hunting zone, measurement gap delay is set to the time value for meeting alien frequencies handoff delay requirement by the evolution base station.
8th, the method as described in 5 to 7 any one, the evolution base station is received before A4 events reception A4 event measurement reports, in addition to：
Evolution base station receives A2 event measurement reports, and the A2 event measurement reports carry the user
Equipment handles the time of different-frequency measure；
The evolution base station is sent to the user equipment according to A2 event measurement reports configuration measurement control message, and by the measurement control message, and the measurement control message carries the measurement gap delay.
The code that computer program product provided in an embodiment of the present invention is performed, user equipment can subtract measurement gap delay on the basis of the A4 event measurement report triggered times, user equipment is allowd to report A4 event measurement reports in advance, so that when base station judges that user equipment meets the condition of alien frequencies switching, switching command can be issued, reduce when base station issues switching command and run into the probability of GAP patterns, so as to reduce the time delayses of user equipment alien frequencies switching.In certain embodiments, it is not specifically described for well known method, interface, equipment signaling technology, in order to avoid because unnecessary details causes the present invention fuzzy.One of ordinary skill in the art will appreciate that realizing that all or part of step in above-described embodiment method can be by program to indicate the hardware of correlation to complete, described program can store with a computer-readable recording medium, described storage medium, such as：Read-only memory（Read-only Memory, ROM) or random access memory (Random Access Memory, RAM), magnetic disc, CD etc..
Above-described embodiment; the purpose of the present invention, technical scheme and beneficial effect are further described; it should be understood that; it the foregoing is only the embodiment of the present invention; the protection domain being not intended to limit the present invention; those skilled in the art are not on the basis of creative work is paid, and any modification, equivalent substitution and improvements done etc. should be included in the scope of the protection.
Claims (15)
- Claims1st, a kind of method for optimizing alien frequencies handover delay, it is characterised in thatUser equipment delay is specified to evolution base station transmission A4 event measurement reports after the time, and the announcement triggered time blunt equal to the A4 affairs ^ specified time subtracts measurement gap delay；The user equipment receives switching command, and the switching command is sent in the case of the evolution base station processing A4 event measurement reports switch over judgement successfully.2nd, the method as described in claim 1, it is characterised in that the measurement gap delay is handled the time of different-frequency measure and/or the time of the evolution base station processing A4 event measurement reports with reference to the user equipment by the evolution base station and determined.3rd, method as claimed in claim 2, it is characterized in that, the measurement gap delay is handled the time of different-frequency measure and/or the time of the evolution base station processing A4 event measurement reports with reference to the user equipment by the evolution base station and determined, including：The evolution base station sets hunting zone on the basis of the user equipment handles the time of different-frequency measure and/or the evolution base station handles the time of the A4 event measurement reports；If searching the time value for meeting alien frequencies handover delay requirement in the hunting zone, measurement gap delay is set to the time value for meeting alien frequencies handoff delay requirement by the evolution base station.4th, the method as described in claims 1 to 3 any one, it is characterised in that before the user equipment postpones to send the A4 event measurement reports to the evolution base station after the specified time, in addition to：The user equipment sends A2 event measurement reports to the evolution base station, and the A2 event measurement reports carry the time that the user equipment handles different-frequency measure；The user equipment receives measurement control message, and the measurement control message is carried out with transmission is postponed by the evolution base station according to the A2 event measurement reports, and the measurement control message carries the measurement gap delay；The user equipment starts clearance mode and carries out different-frequency measure according to the measurement control message, when the user equipment in the adjacent cell quality of the clearance mode different-frequency measure is higher than system appointed threshold When, the user equipment postpones after the specified time to the evolution base station transmission A4 event measurement reports.5th, a kind of method for optimizing alien frequencies handover delay, it is characterised in thatEvolution base station receives A4 event measurement reports, and the A4 event measurement reports are delayed after the time of specifying by user equipment and sent, and the announcement triggered time blunt equal to the A4 affairs ^ specified time subtracts measurement gap delay；The evolution base station handles the A4 event measurement reports and carries out switch decision, if adjudicating successfully, and the evolution base station sends switching command to the user equipment.6th, method as claimed in claim 5, it is characterised in that the measurement gap delay is handled the time of different-frequency measure and/or the time of the evolution base station processing A4 event measurement reports with reference to the user equipment by the evolution base station and determined.7th, method as claimed in claim 6, it is characterized in that, the measurement gap delay is handled the time of different-frequency measure and/or the time of the evolution base station processing A4 event measurement reports with reference to the user equipment by the evolution base station and determined, including：The evolution base station sets hunting zone on the basis of the user equipment handles the time of different-frequency measure and/or the evolution base station handles the time of the A4 event measurement reports；If searching the time value for meeting alien frequencies handover delay requirement in the hunting zone, measurement gap delay is set to the time value for meeting alien frequencies handoff delay requirement by the evolution base station.8th, the method as described in claim 5 to 7 any one, it is characterised in that the evolution base station is received before A4 events reception A4 event measurement reports, in addition to：Evolution base station receives A2 event measurement reports, and the A2 event measurement reports carry the time that the user equipment handles different-frequency measure；The evolution base station is sent to the user equipment according to A2 event measurement reports configuration measurement control message, and by the measurement control message, and the measurement control message carries the measurement gap delay.9th, a kind of user equipment, it is characterised in that including： First transmitter, the first transmitter is used to send the blunt announcements of A4 affairs ^ to evolution base station；First receiver, first receiver is used to receive switching command, and the switching command handles the A4 event measurement reports by evolution base station and sent during switch decision success；First processor, the first processor is for controlling the first transmitter delay to specify to the evolution base station transmission A4 event measurement reports after the time, and the announcement triggered time blunt equal to the A4 affairs ^ specified time subtracts measurement gap delay.10th, user equipment as claimed in claim 9, it is characterised in that the measurement gap delay handles the time of different-frequency measure with reference to the user equipment by the evolution base station and/or the evolution base station handles the A4 affairs>The time of announcement and determine.11st, user equipment as claimed in claim 10, it is characterized in that, the measurement gap delay is handled the time of different-frequency measure and/or the time of the evolution base station processing blunt announcements of the A4 affairs ^ with reference to the user equipment by the evolution base station and determined, including：The evolution base station sets hunting zone on the basis of the user equipment handles the time of different-frequency measure and/or the evolution base station handles the time of the A4 event measurement reports；If searching the time value for meeting alien frequencies handover delay requirement in the hunting zone, measurement gap delay is set to the time value for meeting alien frequencies handoff delay requirement by the evolution base station.12nd, the user equipment as described in claim 9 to 11 any one, it is characterized in that, the first transmitter is additionally operable to send A2 event measurement reports to the evolution base station, and the A2 event measurement reports carry the time that the user equipment handles different-frequency measure；First receiver is additionally operable to receive measurement control message, and the measurement control message is carried out with transmission is postponed by the evolution base station according to the A2 event measurement reports, and the measurement control message carries the measurement gap delay；The first processor is additionally operable to according to the measurement control message, start clearance mode and carry out different-frequency measure, when the user equipment is higher than system appointed threshold in the adjacent cell quality of the clearance mode different-frequency measure, the first processor controls the user equipment to postpone after the specified time to the evolution base station transmission A4 event measurement reports. 13rd, a kind of base station, it is characterised in that including：Second receiver, second receiver is used to receive A4 event measurement reports, and the A4 event measurement reports are delayed after the time of specifying by user equipment and sent, and the specified time is equal to describedA4 affairs>The announcement triggered time subtracts measurement gap delay；Second transmitter, the second transmitter is used to send switching command to the user equipment；Second processor, the second processor is used to handle the A4 event measurement reports and carry out switch decision, when adjudicating successfully, controls the second transmitter to send the switching command to the user equipment.14th, base station as claimed in claim 13, characterized in that, the second processor is additionally operable to handle the time of different-frequency measure and/or the time of the second processor processing blunt announcements of the A4 affairs ^ with reference to the user equipment and determine the measurement gap delay.15th, base station as claimed in claim 14, it is characterized in that, the second processor is additionally operable to handle the time of different-frequency measure and/or the time of the second processor processing blunt announcements of the A4 affairs ^ with reference to the user equipment and determine the measurement gap delay, including：The second processor sets hunting zone on the basis of the user equipment handles the time of different-frequency measure and/or the base station handles the time of the A4 event measurement reports；If searching the time value for meeting alien frequencies handover delay requirement in the hunting zone, measurement gap delay is set to the time value for meeting alien frequencies handoff delay requirement by the evolution base station.16th, the base station as described in claim 13 to 15 any one, it is characterised in that second receiver is additionally operable to receive A2 event measurement reports, and the A2 event measurement reports carry the time that the user equipment handles different-frequency measure；The second transmitter is additionally operable to send the measurement control message to the user equipment, and the measurement control message carries the measurement gap delay；The second processor is additionally operable to according to A2 event measurement reports configuration measurement control message.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2012/070242 WO2013104121A1 (en) | 2012-01-11 | 2012-01-11 | Method and device for optimizing different-frequency handover time delay |
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| CN103503517A true CN103503517A (en) | 2014-01-08 |
| CN103503517B CN103503517B (en) | 2017-03-29 |
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Also Published As
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| WO2013104121A1 (en) | 2013-07-18 |
| CN103503517B (en) | 2017-03-29 |
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