CN101873619A - Method and device for adjusting preamble sequence number - Google Patents
Method and device for adjusting preamble sequence number Download PDFInfo
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- CN101873619A CN101873619A CN200910082816A CN200910082816A CN101873619A CN 101873619 A CN101873619 A CN 101873619A CN 200910082816 A CN200910082816 A CN 200910082816A CN 200910082816 A CN200910082816 A CN 200910082816A CN 101873619 A CN101873619 A CN 101873619A
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Abstract
The invention discloses a method for adjusting preamble sequence number, which comprises the following steps that: according to the result that physical random access to a PRACH channel for uplink synchronous detection within a period of time, determining first accumulation times that a preamble sequence carried by an uplink signal belongs to a first set, and second accumulation times that the sequence belongs to a second set; then according to the first and the second accumulation times, calculating a first target value which represents the preamble sequence number classified to the first set, and a second target value which represents the preamble sequence number classified to the second set; and respectively adjusting the preamble sequence number included in the first set and the second set into the first target value and the second target value. Consequently, the invention can timely adjust the distribution of the preamble sequence sets according to the real-time changes to the network environment so as to significantly reduce the probability of preamble conflict in a system, and effectively reduce the system delay. Simultaneously, the invention discloses a corresponding base station.
Description
Technical field
The application relates to communication system, particularly a kind of adjustment preamble sequence number purpose method and device.
Background technology
(Long Term Evolution, LTE) in the system, end side is used Physical Random Access Channel, and (Physical Random Access Channel PRACH) initiates access process at random to network side, to set up up link at existing Long Term Evolution.In this process, an operable targeting sequencing of PRACH channel (preamble sequence) set can be divided into following two classes:
The first kind is used for the access process at random of uncontested type, is called the dedicated group.
Second class is used for the access process at random of state of conflict, is called the random group.
In system information, the number of the preamble sequence that comprises in the operation parameter numberOfRA-Preambles indication random group.
And the random group is further divided into group A group and group B group respectively, wherein, preamble sequence in the group A group is applicable to the state of conflict situation that message-length is less or path loss is bigger in the access process at random, and the preamble sequence in the group B group is applicable to the state of conflict big and less situation of path loss of message-length in the access process at random.
In system information, the number of the preamble sequence that comprises in the operation parameter sizeOfRA-PreamblesGroupA indication group A group.
Under the technology, the quantity N of an interior operable preamble sequence of PRACH channel is defined by related specifications now, and concrete numerical value is 64, i.e. N=64; So, the preamble sequence during the interior dedicated group of using of PRACH channel, group A group and a group B organize is all divided in these 64 preamble sequences.At present, the division of the preamble sequence in each PRACH channel, normally adopt special-purpose planning instrument to carry out pre-configured by administrative staff in the network planning stage, and in network, reconfigure by the division of manual mode according to network operation situation by administrative staff the preamble sequence in each PRACH channel, this need consume a large amount of time and manpower, has increased the network operation cost greatly; On the other hand, the mode of manually adjusting too relies on administrative staff's personal experience and judgement, and randomness is bigger, makes mistakes easily, is difficult to obtain optimum splitting scheme, thereby has had a strong impact on the service quality of network operation.For example, if it is very few to be divided to the preamble sequence quantity of dedicated group, then can when carrying out the minizone switching, UE increase handover delay; And too much if be divided to the preamble sequence quantity of dedicated group, then can increase the state of conflict collision probability of access process at random, thereby increase the state of conflict time delay of access process at random.Furthermore, again for example, in the random group, if it is unreasonable to be divided to the preamble sequence quantity of group A group and group B group, it is unbalanced then can to cause falling into the interior request of access at random of two groups, thereby increase the state of conflict collision probability of access process at random, and then increase the state of conflict time delay of access process at random.
Therefore, need provide a kind of distribution method of new preamble sequence, make that the preamble sequence in each PRACH channel is rationally divided.
Summary of the invention
The embodiment of the present application provides a kind of adjustment preamble sequence number purpose method and device, is used for according to the network operation situation, in real time the preamble sequence of using in each PRACH channel is rationally divided.
The concrete technical scheme that the embodiment of the present application provides is as follows:
A kind of method of adjusting the preamble sequence number comprises:
In setting duration, physical accidental is inserted the PRACH channel carry out the uplink synchronous detection, obtain testing result;
In described setting duration, the targeting sequencing preamble sequence that upward signal carries belongs to first cumulative number of first set and belongs to second cumulative number of second set according to described testing result statistics; Wherein, described first set comprises and is used for the non-competing type preamble sequence of access process at random, comprises in described second set and is used for the state of conflict preamble sequence of access process at random;
According to described first cumulative number and second cumulative number, calculate preamble sequence number purpose second desired value that is used to represent to be divided to preamble sequence number purpose first desired value of first set and is used to represent to be divided to second set;
The preamble sequence number that comprises in described first set and second set is adjusted into described first desired value and second desired value respectively.
A kind of method of adjusting the preamble sequence number comprises:
Statistics is set incision request rate and the rate of arriving calls in the duration;
Obtain switching the incision telephone traffic of generation according to incision request rate that obtains and default average switching duration calculation, and obtain to be used to represent to be divided to preamble sequence number purpose first ideal value of first set according to this incision telephone traffic, described first set comprises and is used for the non-competing type preamble sequence of access process at random, and is described
Obtain to be used to represent to be divided to the second preamble sequence number purpose secondary ideal value of gathering according to the rate of arriving calls that obtains, comprise in described second set and be used for the state of conflict preamble sequence of access process at random;
Calculate according to first ideal value that obtains and secondary ideal value and to be used to preamble sequence number purpose second desired value representing to be divided to preamble sequence number purpose first desired value of first set and be used to represent to be divided to second set;
The preamble sequence number that comprises in described first set and second set is adjusted into described first desired value and second desired value respectively.
A kind of base station comprises
Monitoring means is used in setting duration, physical accidental is inserted the PRACH channel carry out the uplink synchronous detection, obtains testing result;
Statistic unit is used for according to described testing result statistics in described setting duration, and the targeting sequencing preamble sequence that upward signal carries belongs to first cumulative number of first set and belongs to second cumulative number of second set; Wherein, described first set comprises and is used for the non-competing type preamble sequence of access process at random, comprises in described second set and is used for the state of conflict preamble sequence of access process at random;
Arithmetic element, be used for according to described first cumulative number and second cumulative number, calculate and be used to represent to be divided to preamble sequence number purpose first desired value of first set and be used to represent to be divided to second preamble sequence number purpose second desired value of gathering;
Adjustment unit, the preamble sequence number that is used for comprising in described first set and second set is adjusted into described first desired value and second desired value respectively;
Communication unit is used for the adjustment result of adjustment unit is broadcasted to end side.
A kind of base station comprises:
Statistic unit is used to add up incision request rate and the rate of arriving calls of setting in the duration;
Arithmetic element, be used for obtaining switching the incision telephone traffic of generation according to incision request rate that obtains and default average switching duration calculation, and obtain to be used to represent to be divided to preamble sequence number purpose first ideal value of first set according to this incision telephone traffic, and the preamble sequence number purpose secondary ideal value that obtains to be used to represent to be divided to second set according to the rate of arriving calls that obtains, calculate preamble sequence number purpose first desired value that is used to represent to be divided to first set according to first ideal value that obtains and secondary ideal value again, with preamble sequence number purpose second desired value that is used to represent to be divided to second set, wherein, described first set comprises and is used for the non-competing type preamble sequence of access process at random, comprises in described second set and is used for the state of conflict preamble sequence of access process at random;
Adjustment unit, the preamble sequence number that is used for comprising in described first set and second set is adjusted into described first desired value and second desired value respectively;
Communication unit is used for the adjustment result of adjustment unit is broadcasted to end side.
A kind of method of adjusting the preamble sequence number comprises:
In setting duration, physical accidental is inserted the PRACH channel carry out the uplink synchronous detection, obtain testing result;
In described setting duration, the targeting sequencing preamble sequence that upward signal carries belongs to first cumulative number of first set and belongs to second cumulative number of second set according to described testing result statistics; Wherein, described first set comprises and is used for the non-competing type preamble sequence of access process at random, comprises in described second set and is used for the state of conflict preamble sequence of access process at random;
According to described first cumulative number and second cumulative number, calculate preamble sequence number purpose second desired value that is used to represent to be divided to preamble sequence number purpose first desired value of first set and is used to represent to be divided to second set;
The preamble sequence number that comprises in described first set and second set is adjusted into described first desired value and second desired value respectively;
To adjust the result broadcasts to end side.
A kind of method of adjusting the preamble sequence number comprises:
Statistics is set incision request rate and the rate of arriving calls in the duration;
Obtain switching the incision telephone traffic of generation according to incision request rate that obtains and default average switching duration calculation, and obtain to be used to represent to be divided to preamble sequence number purpose first ideal value of first set according to this incision telephone traffic, described first set comprises and is used for the non-competing type preamble sequence of access process at random, and is described
Obtain to be used to represent to be divided to the second preamble sequence number purpose secondary ideal value of gathering according to the rate of arriving calls that obtains, comprise in described second set and be used for the state of conflict preamble sequence of access process at random;
Calculate according to first ideal value that obtains and secondary ideal value and to be used to preamble sequence number purpose second desired value representing to be divided to preamble sequence number purpose first desired value of first set and be used to represent to be divided to second set;
The preamble sequence number that comprises in described first set and second set is adjusted into described first desired value and second desired value respectively;
To adjust the result broadcasts to end side.
Use technique scheme, can be according to the real-time change of network environment, in time the distribution condition of preamble arrangement set is adjusted, thereby obviously reduced the probability that the preamble conflict takes place in the system, effectively reduced system's time delay, and then promoted network service quality, also reduced the network operation maintenance cost simultaneously.
Description of drawings
Fig. 1 is LTE Solution Architecture figure in the embodiment of the present application;
Fig. 2 is a base station functions structural representation in the embodiment of the present application;
The first method flow chart of Fig. 3 in the embodiment of the present application the preamble sequence number that comprises in dedicated group and the random group being adjusted;
The second method flow chart of Fig. 4 in the embodiment of the present application the preamble sequence number that comprises in dedicated group and the random group being adjusted;
The first method flow chart of Fig. 5 in the embodiment of the present application the preamble sequence number that comprises in groupA group in the random group and the groupB group being adjusted;
The second method flow chart of Fig. 6 in the embodiment of the present application the preamble sequence number that comprises in groupA group in the random group and the groupB group being adjusted;
The second method flow chart of Fig. 7 in the embodiment of the present application the preamble sequence number that comprises in groupA group in the random group and the groupB group being adjusted.
Embodiment
In the LTE system, in order can in real time the preamble sequence of using in each PRACH channel rationally to be divided according to the network operation situation, the embodiment of the present application provides two kinds of implementation methods,
First kind of implementation method is: in setting duration, physical accidental is inserted the PRACH channel carry out the uplink synchronous detection, obtain testing result; In described setting duration, the targeting sequencing preamble sequence that upward signal carries belongs to first cumulative number of first set and belongs to second cumulative number of second set according to described testing result statistics; Wherein, described first set comprises and is used for the non-competing type preamble sequence of access process at random, comprises in described second set and is used for the state of conflict preamble sequence of access process at random; According to described first cumulative number and second cumulative number, calculate preamble sequence number purpose second desired value that is used to represent to be divided to preamble sequence number purpose first desired value of first set and is used to represent to be divided to second set; The preamble sequence number that comprises in described first set and second set is adjusted into described first desired value and second desired value respectively.
Second kind of implementation method is: statistics is set incision request rate and the rate of arriving calls in the duration; Obtain switching the incision telephone traffic of generation according to incision request rate that obtains and default average switching duration calculation, and obtain to be used to represent to be divided to preamble sequence number purpose first ideal value of first set according to this incision telephone traffic, described first set comprises and is used for the non-competing type preamble sequence of access process at random, obtain to be used to represent to be divided to the second preamble sequence number purpose secondary ideal value of gathering according to the rate of arriving calls that obtains, comprise in described second set and be used for the state of conflict preamble sequence of access process at random; Calculate according to first ideal value that obtains and secondary ideal value and to be used to preamble sequence number purpose second desired value representing to be divided to preamble sequence number purpose first desired value of first set and be used to represent to be divided to second set; The preamble sequence number that comprises in described first set and second set is adjusted into described first desired value and second desired value respectively.
Below in conjunction with accompanying drawing the preferred embodiment of the present invention is elaborated.
Consult the shown in Figure 2 of Fig. 1, in the present embodiment, comprise a plurality of base stations 10 and a plurality of terminal 11 in the LTE system, wherein, base station 10 comprises monitoring means 100, statistic unit 101, arithmetic element 102, adjustment unit 103 and communication unit 104, wherein,
Under first kind of situation:
Monitoring means 100 is used in setting duration, physical accidental is inserted the PRACH channel carry out the uplink synchronous detection, obtains testing result;
And under second kind of situation:
Based on the said system framework, in the present embodiment, suppose each PRACH channel in the sub-district can with the total quantity of preamble sequence be N, wherein, the quantity that belongs to the preamble sequence of dedicated group is that the quantity that N1 belongs to the preamble sequence of random group is N2, N=N1+N2;
So, consult shown in Figure 3ly, in the present embodiment, under first kind of situation, base station 10 is according to the probability that detects up preamble sequence, and the detailed process that the quantity that belongs to the preamble sequence that dedicated group and random organize is adjusted is as follows respectively:
Step 300: the statistics timer zero setting that will be provided with, each counter zero setting is provided with a statistics timer, and two counters below are called counter 1 sum counter 2.
Step 310: network environment is carried out uplink synchronous detect, obtain testing result.
In the present embodiment, so-called uplink synchronous detects, promptly be meant and use correlation method that upward signal is detected, comprise statistical signal received power (Pow) or Signal-to-Noise (SNR), and compare with default threshold value (Thre), and when knowing that according to comparative result signal received power or Signal-to-Noise surpass the setting threshold value, determine to exist and carry the upward signal of preamble sequence.
When carrying out above-mentioned steps, need all carry out coherent detection at N preamble sequence of a PRACH channel correspondence.For some preamble sequences, may detect C distinguishable relevant peaks, thinking this moment has C user initiating access at random simultaneously.If C=1 then thinks and does not conflict, if C＞1 thinks that then this preamble sequence clashes.
Step 320: judge whether to exist preamble to insert according to the testing result that obtains? if then carry out step 330; Otherwise, return step 310.
Step 330: judge that according to the sequence number of preamble sequence the preamble sequence of current access belongs to still random group of dedicated group, if belong to the dedicated group, then execution in step 340; If belong to the random group, then execution in step 350.
Step 340 adds C1 with counter 1, and wherein, C1 is detected greater than preamble sequence relevant peaks number in the dedicated group of detection threshold., then, execution in step 306.
Step 350: calculator 2 is added C2; Wherein C2 is detected greater than preamble sequence relevant peaks number in the random group of detection threshold.
Step 360: judge whether the statistics timer is overtime, if then execution in step 370; Otherwise, return step 310.
In the present embodiment, adopt following formula when calculating N1 and N2:
N1=F (the accumulation numerical value of N * counter 1/(the accumulation numerical value of the accumulation numerical value+counter 2 of counter 1)), N2=N-N1; Wherein, F () expression rounds, and can use the multiple modes that rounds such as rounding up, round, round up downwards, does not repeat them here.
Step 380: the quantity of the preamble sequence that the current dedicated of belonging to group and random are organized is adjusted into the desired value of N1 and N2 respectively, then returns step 300.
For example, be 8 if belong to the quantity of the preamble sequence of dedicated group before adjusting, and the quantity that belongs to the preamble sequence of random group is 56, Dui Ying numbPreambles=56 then.Through after the aforementioned calculation, new N1=12, N2=52, then Dui Ying numberOfRA-Preambles=52.
Be different from the foregoing description, consult shown in Figure 4ly, under second kind of situation, base station 10 is according to the statistical information of service request, and the detailed process that the quantity that belongs to the preamble sequence that dedicated group and random organize is adjusted is as follows respectively:
Step 400: the statistics timer zero setting that will be provided with in the present embodiment, is that example describes with a statistics timer.
Step 410: add up terminal 11 in other sub-districts incision request rate r1 and the rate of arriving calls r2 of the terminal in this sub-district 11 when initiating to insert callings when switching to this sub-district respectively.
In the practical application, terminal 11 switches to 10 administration sub-districts, base station by other sub-districts, need to use the preamble sequence that belongs to the dedicated group, and terminal 11 initiates to insert request call in 10 administration sub-districts, base station, then need to use the preamble sequence that belongs to the random group, therefore, the value of incision request rate r1 and rate of arriving calls r2 will influence the number of the preamble sequence in dedicated group and the random group.
Step 420: judge whether the statistics timer is overtime, if then execution in step 430; Otherwise, return step 410.
Step 430: calculate the incision telephone traffic Y that the incision flow process produces according to incision request rate r1 and the average duration T that switches, formula is Y=r1T.The average duration that switches can obtain by emulation, also can 10 sides add up in the base station.
Step 440:, obtain to belong to the desirable preamble sequence quantity N10 of dedicated group under certain incision blocking probability according to incision request rate r1 and default Irish call loss table; Wherein, Irish call loss is as shown in table 1:
Table 1
Step 450: obey Poisson distribution owing to call out to arrive, so, according to formula
Can calculate the desirable preamble sequence quantity N20 that need belong to the random group: wherein, p is the preamble sequence collision probability of expectation, as 1%, the preamble sequence total quantity of N for using in the default PRACH channel, the rate of arriving calls of r2 for obtaining.
Step 460: the reasonable value that calculates current N1 and N2 according to the N10 that obtains and N20, i.e. desired value.
In the present embodiment, adopt following formula when calculating N1 and N2:
N1=F (N * N10/ (N10+N20)), N2=N-N1, F () expression rounds, and can use the multiple modes that rounds such as rounding up, round, round up downwards, then, enters step 470.
Step 470: the quantity of the preamble sequence that the current dedicated of belonging to group and random are organized is adjusted into the N1 that calculates and the desired value of N2, then returns step 400.
Based on above-mentioned two embodiment, in actual applications, further be divided into groupA group and groupB group in the random group, the quantity of supposing to belong to the preamble sequence of group group A is N21, and the quantity that belongs to the preamble sequence of groupB group is N22, N2=N21+N22, so, consult shown in Figure 5ly, in the present embodiment, base station 10 equally can be according to the probability that detects up preamble sequence.As follows to belonging to the detailed process that groupA organizes and the quantity of the preamble sequence of groupB is adjusted respectively:
Step 500: the statistics timer zero setting that will be provided with, each counter zero setting is provided with a statistics timer, and two counters below are called counter 3 sum counters 4.
The time device, two counters below are called counter 3 sum counters 4.
Step 510: network environment is carried out uplink synchronous detect, obtain testing result.
Step 520: judge whether to exist the preamble sequence to insert according to the testing result that obtains? if then carry out step 530; Otherwise, return step 510.
Step 530: the preamble sequence of judging current access belongs to still groupB group of groupA group, if belong to the groupA group, then execution in step 540; If belong to the groupB group, then execution in step 550.
Step 540: counter 3 is added C3, and wherein, C3 is the detected preamble sequence relevant peaks number that belongs to group A group greater than detection threshold, then, and execution in step 560.
Step 550: counter 4 is added C4, and wherein, C4 is the relevant peaks number of the detected preamble sequence that belongs to group B group greater than detection threshold, then, and execution in step 560.
Step 560: judge whether the statistics timer is overtime, if then carry out step 570; Otherwise return step 510.
Step 570:, calculate the reasonable value of current N21 and N22 according to the cumulative data of the accumulation numerical value sum counter 4 of counter 3.
In the present embodiment, adopt following formula when calculating N21 and N22:
N21=F (the accumulation numerical value of N2 * counter 3/(the accumulation numerical value of the accumulation numerical value+counter 4 of counter 3)), N22=N2-N21; Wherein, F () expression rounds, and can use the multiple modes that rounds such as rounding up, round, round up downwards, does not repeat them here.
Step 580: the current quantity that belongs to the preamble sequence of groupA group and groupB group is adjusted a N21 who obtains and the desired value of N22, then return step 500.
In the practical application, base station 10 also can be adjusted the value of above-mentioned N21, N22 according to the preamble sequence that belongs to the groupA group and the collision probability of the preamble sequence that belongs to the groupB group, by adjusting the value of N21 and N22, the probability that the feasible preamble sequence that belongs to group A group and group B group respectively clashes is about the same.Consult shown in Figure 6ly, its detailed process is as follows:
Step 600: the statistics timer zero setting that will be provided with.
In the practical application, judge that the method that the conflict of preamble sequence takes place has a lot, including but not limited to: statistics is higher than the relevant peaks quantity of detection threshold to determine to take place the generation of preamble sequence conflict; Perhaps, judge that the outer relevant peaks power of signal window conflicts to determine generation preamble sequence, or the like, repeat no more here.
Step 620: judge whether the statistics timer is overtime, if then execution in step 630; Otherwise return step 610.
Step 630: whether judge P1/N21 ' greater than P2/N22 ', i.e. P1/N21 '＞P2/N22 '? wherein, N21 ' and N22 ' are respectively the quantity of the preamble sequence of the current group of belonging to A group and groupB group; If, then show the probability that probability that the preamble sequence in the group A group clashes clashes greater than the preamble sequence in the group B group, so, execution in step 640; Otherwise, showing the probability that probability that the preamble sequence in the group B group clashes clashes greater than the preamble sequence in the groupA group, execution in step 660 so.
Step 640: judge P1/ (N21 '+delta) whether more than or equal to P2/ (N22-delta), promptly P1/ (N21 '+delta) 〉=P2/ (N22 '-delta)? wherein, delta is default fixed step size value; If, can not cause vibration after then showing adjustment, so, execution in step 650, otherwise, the value of current N21 ' and N22 ' is not adjusted, directly return step 600
Step 650:N21=N21 '+delta, N22=N22 '-delta, then, execution in step 680.
Step 660: judge P1/ (N21 '-delta) whether smaller or equal to P2/ (N22 '+delta), promptly P1/ (N21 '-delta)≤P2/ (N22 '+delta)? wherein, delta is default fixed step size value; If, can not cause vibration after then showing adjustment, so, execution in step 670; Otherwise, the value of current N21 ' and N22 ' is not adjusted, directly return step 600.
Step 670:N21=N21 '-delta, N22=N22 '+delta, then execution in step 680.
Step 680: the quantity of the preamble sequence that the current groupA of belonging to group and groupB are organized is adjusted into N21 and N22 respectively, then returns step 600.
In the practical application, above-mentioned steps 630～680 can use following step 730～770 to replace.Consult shown in Figure 7ly, its detailed process is as follows:
Step 700: the statistics timer zero setting that will be provided with.
Step 710: statistics belongs to the number of times P2 that the number of times P1 that the preamble sequence of group A group clashes and the preamble sequence that belongs to group B clash respectively.
In the practical application, judge that the method that the conflict of preamble sequence takes place has a lot, including but not limited to: statistics is higher than the relevant peaks quantity of detection threshold to determine to take place the generation of preamble sequence conflict; Perhaps, judge that the outer relevant peaks power of signal window conflicts to determine generation preamble sequence, or the like, repeat no more here.
Step 720: judge whether the statistics timer is overtime, if then execution in step 730; Otherwise return step 710.
Step 730: judge that whether P1/N21 ' is greater than P2/N22 '+Thre1, P1/N21 '＞P2/N22 '+Thre1? wherein, N21 ' and N22 ' are respectively the quantity of the preamble sequence of the current group of belonging to A group and groupB group, and Thre1 is the default excessive thresholding of judgement collision probability; If, then show the probability that probability that the preamble sequence that belongs to group A group clashes clashes much larger than the preamble sequence that belongs to group B group, so, execution in step 740; Otherwise, execution in step 750.
Step 740:N21=N21 '+delta, N22=N22 '-delta, wherein, delta is default fixed step size value, then, execution in step 770.
Step 750: whether judge P1/N21 ' less than P2/N22-Thre2, i.e. P1/N21 '＜P2/N22-Thre2? wherein, Thre2 is the default too small thresholding of judgement collision probability; If, then show the probability that probability that the preamble sequence that belongs to group B group clashes clashes much larger than the preamble sequence that belongs to group A group, so, execution in step 660 '; Otherwise, the value of current N21 ' and N22 ' is not adjusted, directly return step 700.
Step 760:N21=N21 '-delta, N22=N22 '+delta, then, execution in step 670;
Step 770: the quantity of the preamble sequence that the current groupA of belonging to group and groupB are organized is adjusted into N21 and N22, then returns step 700.
Pass through the various embodiments described above, broadcast the preamble sequence number that comprises in adjusted dedicated group and the random group base station 10 to end side, and the preamble sequence number that comprises in groupA group and groupB organized is broadcasted to end side, make end side send upward signal, thereby effectively reduce the probability that the preamble conflict takes place in the system according to the preamble sequence after the reasonable division.
In the various embodiments described above, if operator allows, the adjustment of preamble arrangement set can 10 sides independently be finished in the base station; Otherwise the base station need report O﹠amp to recommended value; M is through O﹠amp; After the M approval, just carry out and adjust action, this recommended value can report to O﹠amp by northbound interface; M.
In sum, use above-mentioned each technical scheme of the embodiment of the present application record, can be according to the real-time change of network environment, in time the distribution condition of preamble arrangement set is adjusted, thereby obviously reduced the probability that the preamble conflict takes place in the system, effectively reduce system's time delay, and then promoted network service quality, also reduced the network operation maintenance cost simultaneously.
Obviously, those skilled in the art can carry out various changes and modification and the spirit and scope that do not break away from the application to the embodiment among the application.Like this, if these in the embodiment of the present application are revised and modification belongs within the scope of the application's claim and equivalent technologies thereof, then the embodiment among the application also is intended to comprise these changes and modification interior.
Claims (26)
1. a method of adjusting the targeting sequencing number is characterized in that, comprising:
In setting duration, physical accidental is inserted the PRACH channel carry out the uplink synchronous detection, obtain testing result;
In described setting duration, the targeting sequencing preamble sequence that upward signal carries belongs to first cumulative number of first set and belongs to second cumulative number of second set according to described testing result statistics; Wherein, described first set comprises and is used for the non-competing type preamble sequence of access process at random, comprises in described second set and is used for the state of conflict preamble sequence of access process at random;
According to described first cumulative number and second cumulative number, calculate preamble sequence number purpose second desired value that is used to represent to be divided to preamble sequence number purpose first desired value of first set and is used to represent to be divided to second set;
The preamble sequence number that comprises in described first set and second set is adjusted into described first desired value and second desired value respectively.
2. the method for claim 1 is characterized in that, after the preamble sequence number that comprises in described first set and second is gathered is adjusted into described first desired value and second desired value respectively, comprising:
In setting duration, the preamble sequence that upward signal carries belongs to the 3rd cumulative number of first subclass in second set and belongs to the 4th cumulative number of second subclass in second set according to described testing result statistics; Wherein, described first subclass comprises and is used for the first kind state of conflict preamble sequence of access process at random, comprises in described second subclass and is used for the second class state of conflict preamble sequence of access process at random;
According to described the 3rd cumulative number and the 4th cumulative number, calculate and be used to represent preamble sequence number purpose the 4th desired value that is divided to preamble sequence number purpose the 3rd desired value of first subclass and is used to represent be divided to second subclass;
The preamble sequence number that comprises in described first subclass and second subclass is adjusted into described the 3rd desired value and the 4th desired value respectively.
3. the method for claim 1 is characterized in that, after the preamble sequence number that comprises in described first set and second is gathered is adjusted into described first desired value and second desired value respectively, comprising:
Statistics is set in the duration, currently belong to the 5th cumulative number that the preamble sequence of first subclass clashes in described second set, and the 6th cumulative number that clashes of the current preamble sequence that belongs to second subclass in described second set;
Calculate first ratio, this first ratio is the current preamble sequence number purpose ratio that comprises in described the 5th cumulative number and described first subclass;
Calculate second ratio, this second ratio is the current preamble sequence number purpose ratio that comprises in described the 6th cumulative number and described second subclass,
First ratio and second ratio are compared, and the preamble sequence number that comprises in described first subclass and second subclass is adjusted accordingly according to comparative result.
4. method as claimed in claim 3, it is characterized in that, when the preamble sequence number that comprises in described first subclass and second subclass being adjusted according to described comparative result, if described comparative result is: first ratio is greater than second ratio, then when definite adjustment behavior can not produce vibration, the current preamble sequence number that comprises in described first subclass is increased a default adjusted value, simultaneously, with current default adjusted value of preamble sequence decreased number that comprises in described second subclass.
5. method as claimed in claim 3, it is characterized in that, when the preamble sequence number that comprises in described first subclass and second subclass being adjusted according to described comparative result, if described comparative result is: first ratio is not more than second ratio, then when definite adjustment behavior can not produce vibration, with current default adjusted value of preamble sequence decreased number that comprises in described first subclass, simultaneously, the current preamble sequence number that comprises in described second subclass is increased a default adjusted value.
6. the method for claim 1 is characterized in that, after the preamble sequence number that comprises in described first set and second is gathered is adjusted into described first desired value and second desired value respectively, comprising:
Statistics is set in the duration, currently belong to the 5th cumulative number that the preamble sequence of first subclass clashes in described second set, and the 6th cumulative number that clashes of the current preamble sequence that belongs to second subclass in described second set;
Calculate the 3rd ratio, the 3rd ratio is the current preamble sequence number purpose ratio that comprises in described the 5th cumulative number and described first subclass;
Calculate the 4th ratio, the 4th ratio is the current preamble sequence number purpose ratio that comprises in described the 6th cumulative number and described second subclass;
The 3rd ratio and the 4th ratio are compared, and the preamble sequence number that comprises in described first subclass and second subclass is adjusted accordingly according to comparative result.
7. method as claimed in claim 6, it is characterized in that, when the preamble sequence number that comprises in described first subclass and second subclass being adjusted accordingly according to comparative result, if described comparative result is: the 3rd ratio is greater than the 4th ratio and the default first threshold value sum, then the current preamble sequence number that comprises in described first subclass is increased a default adjusted value, simultaneously, with current default adjusted value of preamble sequence decreased number that comprises in described second subclass.
8. method as claimed in claim 6, it is characterized in that, when the preamble sequence number that comprises in described first subclass and second subclass being adjusted accordingly according to comparative result, if described comparative result is: the 3rd ratio is poor less than the 4th ratio and default second threshold value, then with current default adjusted value of preamble sequence decreased number that comprises in described first subclass, simultaneously, the current preamble sequence number that comprises in described second subclass is increased a default adjusted value.
9. a method of adjusting the targeting sequencing number is characterized in that, comprising:
Statistics is set incision request rate and the rate of arriving calls in the duration;
Obtain switching the incision telephone traffic of generation according to incision request rate that obtains and default average switching duration calculation, and obtaining to be used to represent to be divided to preamble sequence number purpose first ideal value of first set according to this incision telephone traffic, described first set comprises and is used for the non-competing type preamble sequence of access process at random;
Obtain to be used to represent to be divided to the second preamble sequence number purpose secondary ideal value of gathering according to the rate of arriving calls that obtains, comprise in described second set and be used for the state of conflict preamble sequence of access process at random;
Calculate according to first ideal value that obtains and secondary ideal value and to be used to preamble sequence number purpose second desired value representing to be divided to preamble sequence number purpose first desired value of first set and be used to represent to be divided to second set;
The preamble sequence number that comprises in described first set and second set is adjusted into described first desired value and second desired value respectively.
10. method as claimed in claim 9 is characterized in that, after the preamble sequence number that comprises in described first set and second is gathered is adjusted into described first desired value and second desired value respectively, comprising:
In setting duration, the preamble sequence that upward signal carries belongs to the 3rd cumulative number of first subclass in second set and belongs to the 4th cumulative number of second subclass in second set according to described testing result statistics; Wherein, described first subclass comprises and is used for the first kind state of conflict preamble sequence of access process at random, comprises in described second subclass and is used for the second class state of conflict preamble sequence of access process at random;
According to described the 3rd cumulative number and the 4th cumulative number, calculate and be used to represent preamble sequence number purpose the 4th desired value that is divided to preamble sequence number purpose the 3rd desired value of first subclass and is used to represent be divided to second subclass;
To be adjusted into described the 3rd desired value and the 4th desired value respectively to the preamble sequence number that comprises in described first subclass and second subclass.
11. method as claimed in claim 9 is characterized in that, after the preamble sequence number that comprises in described first set and second is gathered is adjusted into described first desired value and second desired value respectively, comprising:
Statistics is set in the duration, currently belong to the 5th cumulative number that the preamble sequence of first subclass clashes in described second set, and the 6th cumulative number that clashes of the current preamble sequence that belongs to second subclass in described second set;
Calculate first ratio, this first ratio is the current preamble sequence number purpose ratio that comprises in described the 5th cumulative number and described first subclass;
Calculate second ratio, this second ratio is the current preamble sequence number purpose ratio that comprises in described the 6th cumulative number and described second subclass,
First ratio and second ratio are compared, and the preamble sequence number that comprises in described first subclass and second subclass is adjusted accordingly according to comparative result.
12. method as claimed in claim 11, it is characterized in that, when the preamble sequence number that comprises in described first subclass and second subclass being adjusted according to described comparative result, if described comparative result is: first ratio is greater than second ratio, then when definite adjustment behavior can not produce vibration, the current preamble sequence number that comprises in described first subclass is increased a default adjusted value, simultaneously, with current default adjusted value of preamble sequence decreased number that comprises in described second subclass.
13. method as claimed in claim 11, it is characterized in that, when the preamble sequence number that comprises in described first subclass and second subclass being adjusted according to described comparative result, if described comparative result is: first ratio is not more than second ratio, then when definite adjustment behavior can not produce vibration, with current default adjusted value of preamble sequence decreased number that comprises in described first subclass, simultaneously, the current preamble sequence number that comprises in described second subclass is increased a default adjusted value.
14. method as claimed in claim 9 is characterized in that, after the preamble sequence number that comprises in described first set and second is gathered is adjusted into described first desired value and second desired value respectively, comprising:
Statistics is set in the duration, currently belong to the 5th cumulative number that the preamble sequence of first subclass clashes in described second set, and the 6th cumulative number that clashes of the current preamble sequence that belongs to second subclass in described second set;
Calculate the 3rd ratio, the 3rd ratio is the current preamble sequence number purpose ratio that comprises in described the 5th cumulative number and described first subclass;
Calculate the 4th ratio, the 4th ratio is the current preamble sequence number purpose ratio that comprises in described the 6th cumulative number and described second subclass;
The 3rd ratio and the 4th ratio are compared, and the preamble sequence number that comprises in described first subclass and second subclass is adjusted accordingly according to comparative result.
15. method as claimed in claim 14, it is characterized in that, when the preamble sequence number that comprises in described first subclass and second subclass being adjusted accordingly according to comparative result, if described comparative result is: the 3rd ratio is greater than the 4th ratio and the default first thresholding sum, then the current preamble sequence number that comprises in described first subclass is increased a default adjusted value, simultaneously, with current default adjusted value of preamble sequence decreased number that comprises in described second subclass.
16. method as claimed in claim 14, it is characterized in that, when the preamble sequence number that comprises in described first subclass and second subclass being adjusted accordingly according to comparative result, if described comparative result is: the 3rd ratio is poor less than the 4th ratio and default second threshold value, then comprises:
Calculate the 5th ratio, the 5th ratio comprises the ratio of the difference of described the 6th cumulative number and interior current preamble sequence number that comprises of described second subclass and default second threshold value;
Described the 3rd ratio and described the 5th ratio are compared, when determining the 3rd ratio less than the 5th ratio, with current default adjusted value of preamble sequence decreased number that comprises in described first subclass, simultaneously, the current preamble sequence number that comprises in described second subclass is increased a default adjusted value.
17. a base station is characterized in that, comprises
Monitoring means is used in setting duration, physical accidental is inserted the PRACH channel carry out the uplink synchronous detection, obtains testing result;
Statistic unit is used for according to described testing result statistics in described setting duration, and the targeting sequencing preamble sequence that upward signal carries belongs to first cumulative number of first set and belongs to second cumulative number of second set; Wherein, described first set comprises and is used for the non-competing type preamble sequence of access process at random, comprises in described second set and is used for the state of conflict preamble sequence of access process at random;
Arithmetic element, be used for according to described first cumulative number and second cumulative number, calculate and be used to represent to be divided to preamble sequence number purpose first desired value of first set and be used to represent to be divided to second preamble sequence number purpose second desired value of gathering;
Adjustment unit, the preamble sequence number that is used for comprising in described first set and second set is adjusted into described first desired value and second desired value respectively;
Communication unit is used for the adjustment result of adjustment unit is broadcasted to end side.
18. base station as claimed in claim 17, it is characterized in that, after described adjustment unit is adjusted into described first desired value and second desired value respectively with the preamble sequence number that comprises in described first set and second set, described statistic unit is added up in setting duration according to described testing result, the preamble sequence that upward signal carries belongs to the 3rd cumulative number of first subclass in second set and belongs to the 4th cumulative number of second subclass in second set; Wherein, described first subclass comprises and is used for the first kind state of conflict preamble sequence of access process at random, comprise in described second subclass and be used for the second class state of conflict preamble sequence of access process at random, described arithmetic element is according to described the 3rd cumulative number and the 4th cumulative number, calculate preamble sequence number purpose the 3rd desired value that is used to represent to be divided to first subclass, with preamble sequence number purpose the 4th desired value that is used to represent to be divided to second subclass, described adjustment unit is adjusted into described the 3rd desired value and the 4th desired value respectively with the preamble sequence number that comprises in described first subclass and second subclass.
19. base station as claimed in claim 17, it is characterized in that, after described adjustment unit is adjusted into described first desired value and second desired value respectively with the preamble sequence number that comprises in described first set and second set, described statistic unit statistics is set in the duration, the 5th cumulative number that the current preamble sequence that belongs to first subclass in described second set clashes, and currently belong to the 6th cumulative number that the preamble sequence of second subclass clashes in described second set, described arithmetic element is calculated first ratio and second ratio, described first ratio is the current preamble sequence number purpose ratio that comprises in described the 5th cumulative number and described first subclass, described second ratio is the current preamble sequence number purpose ratio that comprises in described the 6th cumulative number and described second subclass, and first ratio and second ratio compared, described adjustment unit adjusts accordingly the preamble sequence number that comprises in described first subclass and second subclass according to comparative result.
20. base station as claimed in claim 17, it is characterized in that, after described adjustment unit is adjusted into described first desired value and second desired value respectively with the preamble sequence number that comprises in described first set and second set, described statistic unit statistics is set in the duration, the 5th cumulative number that the current preamble sequence that belongs to first subclass in described second set clashes, and currently belong to the 6th cumulative number that the preamble sequence of second subclass clashes in described second set, described arithmetic element is calculated the 3rd ratio and the 4th ratio, described the 3rd ratio is the current preamble sequence number purpose ratio that comprises in described the 5th cumulative number and described first subclass, described the 4th ratio is described the 6th cumulative number, with the current preamble sequence number purpose ratio that comprises in described second subclass, and the 3rd ratio and the 4th ratio compared, described adjustment unit adjusts accordingly the preamble sequence number that comprises in described first subclass and second subclass according to comparative result.
21. a base station is characterized in that, comprising:
Statistic unit is used to add up incision request rate and the rate of arriving calls of setting in the duration;
Arithmetic element, be used for obtaining switching the incision telephone traffic of generation according to incision request rate that obtains and default average switching duration calculation, and obtain to be used to represent to be divided to preamble sequence number purpose first ideal value of first set according to this incision telephone traffic, and the preamble sequence number purpose secondary ideal value that obtains to be used to represent to be divided to second set according to the rate of arriving calls that obtains, calculate preamble sequence number purpose first desired value that is used to represent to be divided to first set according to first ideal value that obtains and secondary ideal value again, with preamble sequence number purpose second desired value that is used to represent to be divided to second set, wherein, described first set comprises and is used for the non-competing type preamble sequence of access process at random, comprises in described second set and is used for the state of conflict preamble sequence of access process at random;
Adjustment unit, the preamble sequence number that is used for comprising in described first set and second set is adjusted into described first desired value and second desired value respectively;
Communication unit is used for the adjustment result of adjustment unit is broadcasted to end side.
22. base station as claimed in claim 21, it is characterized in that, after described adjustment unit is adjusted into described first desired value and second desired value respectively with the preamble sequence number that comprises in described first set and second set, described statistic unit statistics is in setting duration, the preamble sequence that upward signal carries belongs to the 3rd cumulative number of first subclass in second set and belongs to the 4th cumulative number of second subclass in second set; Wherein, described first subclass comprises and is used for the first kind state of conflict preamble sequence of access process at random, comprise in described second subclass and be used for the second class state of conflict preamble sequence of access process at random, described arithmetic element is according to described the 3rd cumulative number and the 4th cumulative number, calculate preamble sequence number purpose the 3rd desired value that is used to represent to be divided to first subclass, with preamble sequence number purpose the 4th desired value that is used to represent to be divided to second subclass, described adjustment unit is adjusted into described the 3rd desired value and the 4th desired value respectively with the preamble sequence number that comprises in described first subclass and second subclass.
23. base station as claimed in claim 21, it is characterized in that, after described adjustment unit is adjusted into described first desired value and second desired value respectively with the preamble sequence number that comprises in described first set and second set, described statistic unit statistics is set in the duration, the 5th cumulative number that the current preamble sequence that belongs to first subclass in described second set clashes, and currently belong to the 6th cumulative number that the preamble sequence of second subclass clashes in described second set, described arithmetic element is calculated first ratio and second ratio, described first ratio is the current preamble sequence number purpose ratio that comprises in described the 5th cumulative number and described first subclass, described second ratio is the current preamble sequence number purpose ratio that comprises in described the 6th cumulative number and described second subclass, and first ratio and second ratio compared, described adjustment unit adjusts accordingly the preamble sequence number that comprises in described first subclass and second subclass according to comparative result.
24. base station as claimed in claim 21, it is characterized in that, after described adjustment unit is adjusted into described first desired value and second desired value respectively with the preamble sequence number that comprises in described first set and second set, described statistic unit statistics is set in the duration, the 5th cumulative number that the current preamble sequence that belongs to first subclass in described second set clashes, and currently belong to the 6th cumulative number that the preamble sequence of second subclass clashes in described second set, described arithmetic element is calculated the 3rd ratio and the 4th ratio, described the 3rd ratio is the current preamble sequence number purpose ratio that comprises in described the 5th cumulative number and described first subclass, described the 4th ratio is described the 6th cumulative number, with the current preamble sequence number purpose ratio that comprises in described second subclass, and the 3rd ratio and the 4th ratio compared, described adjustment unit adjusts accordingly the preamble sequence number that comprises in described first subclass and second subclass according to comparative result.
25. a method of adjusting the preamble sequence number is characterized in that, comprising:
In setting duration, physical accidental is inserted the PRACH channel carry out the uplink synchronous detection, obtain testing result;
In described setting duration, the targeting sequencing preamble sequence that upward signal carries belongs to first cumulative number of first set and belongs to second cumulative number of second set according to described testing result statistics; Wherein, described first set comprises and is used for the non-competing type preamble sequence of access process at random, comprises in described second set and is used for the state of conflict preamble sequence of access process at random;
According to described first cumulative number and second cumulative number, calculate preamble sequence number purpose second desired value that is used to represent to be divided to preamble sequence number purpose first desired value of first set and is used to represent to be divided to second set;
The preamble sequence number that comprises in described first set and second set is adjusted into described first desired value and second desired value respectively;
To adjust the result broadcasts to end side.
26. a method of adjusting the preamble sequence number is characterized in that, comprising:
Statistics is set incision request rate and the rate of arriving calls in the duration;
Obtain switching the incision telephone traffic of generation according to incision request rate that obtains and default average switching duration calculation, and obtain to be used to represent to be divided to preamble sequence number purpose first ideal value of first set according to this incision telephone traffic, described first set comprises and is used for the non-competing type preamble sequence of access process at random, and is described
Obtain to be used to represent to be divided to the second preamble sequence number purpose secondary ideal value of gathering according to the rate of arriving calls that obtains, comprise in described second set and be used for the state of conflict preamble sequence of access process at random;
Calculate according to first ideal value that obtains and secondary ideal value and to be used to preamble sequence number purpose second desired value representing to be divided to preamble sequence number purpose first desired value of first set and be used to represent to be divided to second set;
The preamble sequence number that comprises in described first set and second set is adjusted into described first desired value and second desired value respectively;
To adjust the result broadcasts to end side.
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| CN 200910082816 CN101873619B (en) | 2009-04-22 | 2009-04-22 | Method and device for adjusting preamble sequence number |
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| CN201210393936.6A Division CN102905295B (en) | 2009-04-22 | 2009-04-22 | Method and device for regulating preamble sequence numbers |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102076006A (en) * | 2011-01-28 | 2011-05-25 | 武汉理工大学 | Method for detecting PRACH preamble signal |
| CN102685892A (en) * | 2011-03-10 | 2012-09-19 | 中兴通讯股份有限公司 | Configuration method and device for random access leading sequence |
| CN103067880A (en) * | 2013-01-09 | 2013-04-24 | 中兴通讯股份有限公司 | Method of sending clustering messages, network side equipment and terminal equipment |
| WO2016197474A1 (en) * | 2015-06-10 | 2016-12-15 | 中兴通讯股份有限公司 | Prach access control method, and access method and device |
| CN111787639A (en) * | 2020-07-29 | 2020-10-16 | 新华三技术有限公司成都分公司 | Method for managing Preamble and communication base station |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101534542B (en) * | 2009-04-16 | 2011-11-02 | 华为技术有限公司 | Method, device and system for adjusting random access leader sequence |
-
2009
- 2009-04-22 CN CN 200910082816 patent/CN101873619B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102076006A (en) * | 2011-01-28 | 2011-05-25 | 武汉理工大学 | Method for detecting PRACH preamble signal |
| CN102076006B (en) * | 2011-01-28 | 2013-10-16 | 武汉理工大学 | Method for detecting PRACH preamble signal |
| CN102685892A (en) * | 2011-03-10 | 2012-09-19 | 中兴通讯股份有限公司 | Configuration method and device for random access leading sequence |
| CN102685892B (en) * | 2011-03-10 | 2015-07-22 | 中兴通讯股份有限公司 | Configuration method and device for random access leading sequence |
| CN103067880A (en) * | 2013-01-09 | 2013-04-24 | 中兴通讯股份有限公司 | Method of sending clustering messages, network side equipment and terminal equipment |
| WO2016197474A1 (en) * | 2015-06-10 | 2016-12-15 | 中兴通讯股份有限公司 | Prach access control method, and access method and device |
| US10624123B2 (en) | 2015-06-10 | 2020-04-14 | Zte Corporation | PRACH access control method, and access method and device |
| CN111787639A (en) * | 2020-07-29 | 2020-10-16 | 新华三技术有限公司成都分公司 | Method for managing Preamble and communication base station |
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