CN101166315B - A method for making submitted signaling of base station radio link reconfiguration take effect - Google Patents
A method for making submitted signaling of base station radio link reconfiguration take effect Download PDFInfo
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Abstract
Using real-time mode, the invention enables reconfiguration signaling of synchronization wireless link. Based on time point when data of each frame reach corresponding process module, enabling signaling solves issue thoroughly that loss of data occurs in procedure for submitting reconfiguration of synchronization wireless link.
Description
Technical field
The present invention relates to the signaling technology that comes into force in the moving communicating field, be meant that especially a kind of base station reshuffles the method for the signaling that comes into force in the submission process.
Background technology
Third generation partnership project (3GPP, 3
RdGeneration Partnership Project) 25.402 protocol definition Connection Frame Number (CFN, Connection Frame Number), as subscriber equipment (UE, UserEquipment) and universal land radio access web (UTRAN, Universal Terrestrial RadioAccess Network) the time register between, be the register of Iub mouth, wherein, the Iub mouth is base station (NB, Node B) and the interface of radio network controller (RNC, Radio Network Controller); CFN is simultaneously also as the counter of the 2nd layer of data link layer (L2, Layer 2); It is U that 3GPP 25.402 agreements have also defined System Frame Number (SFN, Cell System Frame Number)
UThe time register of mouth.For the data of coming out from the Iub mouth, after handle the base station, need be according to U
UMouthful time point SFN, these data from U
USend on mouthful, therefore, when the base station when handling the data that the Iub mouth issues, need be scaled U to the Iub mouth time counting point CFN that carries in the Frame
UMouth time counting point SFN.Wherein, U
UMouth is the interface of UE and base station.
3GPP 25.433 agreements have stipulated that the time point of this configuration take-effective is a CFN timing point of radio network controller appointment in 8.3.3 joint synchronised radio link reconfigure is submitted to; Receive synchronised radio link reconfigure and submit the node B application part (NBAP of signaling to, Node B Application Part) before this signaling being disposed to other subsystems of inside of base station, earlier CFN is converted to the eat dishes without rice or wine time point SFN corresponding with this CFN, inside of base station is accepted this synchronised radio link reconfigure and is submitted to the subsystem of signaling the entry-into-force time point of this SFN as this signaling.
According to the definition of CFN, every frame arrives the data of base station through the Iub mouth, and the SFN that is converted and obtained by CFN wherein is these frame data and arrives U
UThe time point of mouth can arrive U on time in order to guarantee these frame data
UMouthful, this frame data must be handled in the base station before the specified time point of the CFN in these frame data.In synchronised radio link reconfigure submission process, radio network controller sends to the SFN of CFN correspondence of first frame data of base station, be this and reshuffle the entry-into-force time point SFN that submits signaling to, the entry-into-force time point of other signalings is not by the radio network controller appointment but is determined by base station oneself, has only this signaling that comes into force in advance, could guarantee correctly to handle these frame data before the time point of the CFN appointment of base station in these frame data.
If in reshuffling the submission signaling, the time point that comes into force in advance is inaccurate, the base station mistake will occur when handling first frame data corresponding with this signaling.Submit to signaling to come into force too early if reshuffle, then can influence the processing of the data of replaced signaling correspondence; Submit to signaling to come into force evening if reshuffle, then can influence the processing of the data of this signaling correspondence; Have only to make the time point of reshuffling corresponding first frame data arrival base station respective handling module of the entry-into-force time point of submitting signaling to and this signaling consistent, just can not bring negative effect.Because the existence of propagation delay time, in the processing procedure of at every turn carrying out the synchronised radio link reconfigure submission, the time point that the first wherein corresponding frame data arrive the same processing module in base station is unfixed, from project angle, put and can't agree this time of advent under different situations.If synchronised radio link reconfigure submits to the entry-into-force time point of signaling can not obtain the consistent of strictness with the time point that its first corresponding frame data arrive corresponding processing module, the problem that abandons Frame just can't solve.
At present, synchronised radio link reconfigure submits to the take-effective method of signaling to handle according to the mode that fixed point comes into force, other signaling also is like this for all for the effective time point appointed signaling that comes into force when promptly disposing according to the synchronised radio link reconfigure signaling, this point.The shortcoming of this scheme is the problem that is easy to generate loss of data, because according to coming into force a little of appointment, when the synchronised radio link reconfigure that comes into force is submitted signaling to, according to the definition of CFN, should be handled with a corresponding Frame that comes into force of appointment, and arrive U by the base station
UMouthful, this just means when these frame data are handled in the base station that synchronised radio link reconfigure submits to signaling to enter into force.But actual conditions are these signalings not to come into force; When these frame data are handled in the base station,, abandon this frame so mistake can be occurred because do not come direct base station to handle this frame data with the signaling of its coupling.If these frame data are cached to handle again after this signaling comes into force a little, arrive owing to send the time point of these frame data, but these frame data also do not arrive U
UMouthful, so the base station still has little time to handle this frame data, finally selects to abandon this frame data.
Adopt this method, can only be tolerated in and lose a frame or two frame data that arrive the base station before signaling comes into force, as carrying out packet switching (PS, Packet Switch) after the packet scheduling switch is opened in operational trials, the alarm of base station resolution data frame mistake can occur, it is exactly inconsistent because of the time point of the entry-into-force time point of the reshuffling the submission signaling first frame data arrival base station corresponding with it this alarm occurring; When first frame data arrived the base station, this signaling did not also come into force, and mistake appears in the base station when handling these data; When handling second frame data in the base station, equally this alarm might appear.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of base station to reshuffle to come into force in the submission process method of signaling, this method has solved the problem of loss of data in the synchronised radio link reconfigure submission process simply, reliably and efficiently on the basis of as far as possible changing the original system design less.
Based on above-mentioned purpose, the invention provides the method that the signaling that comes into force in the submission process is reshuffled in a kind of base station, comprise the steps:
A kind of method of making submitted signaling of base station radio link reconfiguration take effect comprises the steps:
A) after the base station receives the data of radio network controller transmission,, then from data, read Connection Frame Number CFN if judge have the radio link reconfiguration that will come into force to submit signaling to;
B) the Connection Frame Number CFN that reads is scaled system frame number SFN;
C) SFN that conversion is obtained and synchronised radio link reconfigure submit to the signaling effective time point appointed relatively;
D) if SFN is not less than this effective time point appointed, this radio link reconfiguration that then comes into force is submitted signaling to.
The described step c) of this method further comprises: this radio link reconfiguration is not submitted signaling to if SFN less than this effective time point appointed, does not then come into force, and continues to use the current radio link configuration of using.
Further comprising after the described step d) of this method by the radio link reconfiguration that newly comes into force submits to signaling to reconfigure Radio Link.
If the described judgement of this method has the radio link reconfiguration that will come into force to submit to signaling to be: submit to the signaling sign to judge to radio link reconfiguration, if this is masked as effective value, then explanation has the radio link reconfiguration that will come into force to submit signaling to; If this is masked as invalid value, then explanation does not have the radio link reconfiguration that will come into force to submit signaling to.
If the described radio link reconfiguration that does not have to come into force of this method is submitted signaling to, then directly in the base station, these data are handled.
If judgement further comprises after having the radio link reconfiguration that will come into force to submit signaling in the described step a) of this method: the data frame head that the base station is received carries out verification, and judgement check results, if check results is correct, then from these data, read CFN, enter step b); Otherwise, abandon this checking data, return step a).
This method is described carries out verification further for the data frame head is carried out cyclic redundancy check (CRC) to the data frame head.
The described cyclic redundancy check (CRC) of this method is for to carry out the CRC7 verification to all data frame heads, if all data frame head verifications are not all passed through, this data frame head mistake then, and the CFN mistake that comprises in this frame head, abandon this Frame, if there is the data frame head verification of a possibility length to pass through, then this data frame head is correct, and the CFN that this data frame head comprises is correct.
The described deterministic process of this method comprises: according to 3GPP agreement frame structures specified, obtain the CRC7 check value of this data frame head from the data frame head, this value and the existing data frame head CRC7 check value that calculates are made comparisons, if equate that check results is correct; Otherwise, the check results mistake.
This method further comprises: select the data frame head advanced row verification high to the data frame head length frequency of occurrences according to the frequency that Frame head length degree occurs.
The verification of the described CRC frame head of this method further comprises: according to existing radio link configuration reading of data frame head, carry out the verification of CRC7 frame head, if check results is correct, then the CFN that comprises of this data frame head is correct; If check results mistake, then submit the radio link configuration reading of data frame head of appointment in the signaling to according to the radio link reconfiguration that is about to come into force, carry out the verification of CRC7 frame head, if check results is correct, then this data frame head is correct, and the CFN that comprises in this data frame head is correct, finishes checking procedure; If the check results mistake, then this Frame mistake, and the CFN mistake that comprises in this data frame head abandons this Frame.
This method is carried out by the data framing protocol processing module in the base station.
From above as can be seen, the method of the signaling that comes into force in the submission process is reshuffled in a kind of base station provided by the invention, adopt real-time mode that the synchronised radio link reconfigure signaling is come into force, the time point that arrives the respective handling module according to the every frame data signaling that comes into force has solved the problem of loss of data in synchronised radio link reconfigure submission process effectively.The present invention uses the verification of CRC7 frame head in advance, has guaranteed the correctness of the CFN that reads from Frame, makes this scheme have higher reliability.The present invention neither needs the resource table of existing module is made any change, and does not also need current system is done big modification, makes this scheme have good feasibility.In addition, the present invention also has favorable expansibility, not only can thoroughly solve the problem of " downlink signaling will come into force in advance, and up signaling will be delayed and come into force " on the base station, can also solve the similar problem of peer modules on the radio network controller.The present invention also provides the method for data frame head verification, realizes the accurate judgement to CFN correctness in the Frame.
Description of drawings
Fig. 1 realizes solving the flow chart that the Signalling method that comes into force in the submission process is reshuffled in the base station for the present invention;
Fig. 2 adopts exhaustive heuristic to realize CRC7 frame head checking process figure in the specific embodiments of the invention;
Fig. 3 adopts the active configuration method to realize CRC7 frame head checking process figure in the specific embodiments of the invention.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
The method of the signaling that comes into force in the submission process is reshuffled in a kind of base station that the present invention proposes, adopt the most direct mode to determine coming into force a little of synchronised radio link reconfigure submission signaling, be specially radio network controller in being handed down to every frame data of base station, all filled in the CFN of these frame data, according to the definition of CFN in 3GPP 25.402 agreements as can be known, the SFN that obtains after conversion of CFN is these frame data at U
UThe time point that mouth sends.Dispose to the synchronised radio link reconfigure of base station at radio network controller and to submit in the signaling, specified the entry-into-force time point CFN of this signaling, and when sending first frame data corresponding with this signaling, for these frame data are filled in identical CFN.The base station is before handling these frame data, earlier the CFN that obtains is converted to the time point SFN that eats dishes without rice or wine of its correspondence from these frame data, compare by being put the SFN that obtains after the CFN conversion in pairing SFN and the Frame signaling entry-into-force time, determine whether this synchronised radio link reconfigure signaling should come into force.Wherein, this signaling entry-into-force time point CFN of described appointment is specially, NBAP is in disposing this signaling to the base station before each subsystem, this entry-into-force time point CFN is converted to the time point SFN that eats dishes without rice or wine of its correspondence, this transfer process is to be carried out by signaling processing module special in the base station, the SFN that is converted to is handed down to the inside of base station Service Processing Module, therefore, the inside of base station Service Processing Module is seen is SFN with effective time point appointed CFN correspondence, for each subsystem in the base station, all will handle this signaling according to this time point SFN that eats dishes without rice or wine.
Concrete implementation step is referring to shown in Figure 1:
Step 101: radio network controller is handed down to the data of base station, arrives Frame Protocol (FP, the Frame Protocol) processing module of base station through the Iub mouth;
Step 102: the Frame Protocol processing module that receives data submits to signaling sign Flag to judge to radio link reconfiguration, if this sign shows the signaling that will come into force is arranged, promptly this moment, the base station received the radio link reconfiguration submission signaling that radio network controller issues, and then entered step 103; Otherwise, enter step 106, directly in the base station, these data are handled.
Described signaling sign Flag is arranged on flag bit in the Frame Protocol processing module, represents in the radio link reconfiguration submission process whether the signaling that will come into force is arranged with 0 or 1.For example, when this signaling flag bit was 1, showing had the radio link reconfiguration that will come into force to submit signaling to; When this signaling flag bit was 0, showing did not have the radio link reconfiguration that will come into force to submit signaling to.
Step 103: data are carried out cyclic redundancy check (CRC) 7 frame head verifications.
The verification of CRC7 frame head is a kind of comparatively typical case and active data method of calibration, certainly, in the present embodiment, also can adopt other data verification method to carry out the data checking procedure.
Step 104: judge CRC7 frame head check results,, wait for the next frame data, return step 101 if the check results mistake abandons this frame data; If check results is correct, enter step 105.
Step 105: from the Frame that the base station receives, directly read CFN, after being scaled SFN, submit to the entry-into-force time point of signaling to compare with synchronised radio link reconfigure,, continue to use the current radio link configuration of using if just do not come into force this signaling less than this entry-into-force time point; Otherwise the synchronised radio link reconfigure that just comes into force is submitted signaling to, and handles this data according to the radio link configuration of harsh effect.
Step 106: the data framing protocol processing module is carried out follow-up data and is handled.
The prerequisite of using this method be exactly the CFN that from Frame, reads of requirement be correct, promptly radio network controller is given the CFN that this Frame is filled in; But, because the environment and the intrinsic defective of Iub oral instructions transmission path of equipment actual motion, the Iub mouth can't guarantee that radio network controller is handed down to the correct arrival base station of Frame energy of base station, the CFN that obtains is resolved in the base station from the Frame that receives correctness also can't guarantee thereupon, provide CRC data frame head check value to carry out the cyclic redundancy check (CRC) verification in agreement 3GPP 25.427 and the agreement 3GPP 25.435 predetermined data frame structures, used the verification of CRC data frame head to give security for the base station.Because the CRC data frame head check value of stipulating in above-mentioned two agreements only takies 7 bits, so among the present invention the verification of this data frame head is referred to as the verification of CRC7 frame head again, in the implementation step 103, the invention provides two kinds of CRC7 frame head methods of calibration: exhaustive heuristic and active configuration precedence method.These two kinds of methods are not the base station to be received each frame data that radio network controller issues all test when realizing, only submit near entry-into-force times point of signaling Frames of arrival base stations to test in synchronised radio link reconfigure to those.
CRC7 frame head method of calibration one: exhaustive heuristic.The specific implementation method is referring to shown in Figure 2.
If the indication of the transformat in each Frame (TFI, Transport Format Indictor), number is n, and the value of n is limited, and the n value in the system is taken as 3 at present.The frame head of Frame comprises: data frame head CRC check value, data frame type, CFN and TFI, and wherein data frame head CRC check value and data frame type account for a byte, and CFN accounts for a byte separately.Because the synchronised radio link reconfigure operation is only at dedicated channel (DCH, Dedicated Channel), therefore the possible length of data frame head is 2+1,2+2,, 2+n, to might length the data frame head carry out the verification of CRC7 frame head, if there is a check results correct, just think that the CFN in this Frame is correct.
The detailed process of exhaustive heuristic is that the Frame frame head of 2+1 carries out the verification of CRC7 frame head to frame head length at first as shown in Figure 2, if verification is passed through, then this process finishes; Otherwise, be that the Frame frame head of 2+2 carries out the verification of CRC7 frame head to frame head length, if verification is passed through, then this process finishes; Otherwise, be that the Frame frame head of 2+3 carries out the verification of CRC7 frame head to frame head length; As long as verification is not passed through, and will be 2+1 according to Frame head length degree, 2+2 ..., the verification of CRC7 frame head is carried out in putting in order of 2+n successively.In the implementation process of this method, as long as once verification is passed through, then no longer other Frame frame head is carried out verification, finish whole checking procedure; If never by verification, then illustrate by the Frame of verification and do not pass through the verification of CRC7 frame head, and then explanation is a misdata by the data of verification.
Among the present invention, the order principle of different pieces of information frame head length being carried out verification is: select according to the frequency that the Frame of different pieces of information frame head length occurs, the frequency of occurrences is high carries out verification earlier; Such as the DCH transmission channel of realizing in the present system, the number of TFI has 1,2 and 3 three kind, Frame head length degree is that the frequency that occurs of the Frame of 2+1 is the highest, next is that Frame head length degree is the Frame of 2+3, be that Frame head length degree is the Frame of 2+2 once more, the verification order just is followed successively by 2+1,2+3,2+2 according to the frequency of its appearance so.Because CRC7 frame head verification consumed time is very short, and the value of n is when specific implementation and little, at present n value maximum be collaborative DCH, its TFI has 3 at most, and is although need repeatedly verification to calculate, little to the real-time influence of whole system.
CRC7 frame head method of calibration two: active configuration precedence method.
The radio link configuration that arrives the Frame correspondence of base station has two kinds of possibilities: a kind of is the current radio link configuration of using, another kind is to submit in the signaling in synchronised radio link reconfigure, the radio link configuration of this signaling appointment is configured, but, also do not come into force owing to there is not the received letter of acceptance time point.
Particularly, radio network controller sends data to the base station, generally all be in data still during the no show base station, long period of time disposes the signaling of carrying out this data manipulation to the base station in advance, guarantee the correct use of this signaling, the entry-into-force time point that has further comprised this signaling that comes into force in this signaling again, control the entry-into-force time of signaling, promptly when the base station receives the data of radio network controller, can not carry out the operation of these data at once, but earlier these data are temporarily stored, after the entry-into-force time of disposing the signaling of giving these data, point came into force, just to the data executable operations.
The specific implementation step is referring to shown in Figure 3.
Step 301 according to the frame head of existing radio link configuration read data frame, is carried out the verification of CRC7 frame head, if check results is correct, just thinks that this CFN is correct; If the check results mistake enters step 302.
Step 302, the frame head according to the radio link configuration read data frame of appointment in the signaling that is about to come into force carries out the verification of CRC7 frame head.
Step 303 if check results is correct, thinks that then this CFN is correct, finishes checking procedure.
Step 304 if the check results mistake is then thought this CFN mistake, abandons the Frame at this CFN place.
In adopting this method enforcement CRC7 frame head checking procedure, for the last not CFN by verification, the base station will abandon the Frame at this CFN place, reason is to transmit data at radio network controller to give in the process of base station, wrong because of the data itself that factors such as delay variation cause the base station to receive, promptly the CFN in the data has produced mistake in transmission course.
Use the active configuration precedence method to carry out the verification of CRC7 frame head, can accomplish to shoot the arrow at the target, according to the test experience, when the PS business was carried out packet scheduling, the number of TFI can not change before and after radio link reconfiguration, and the Frame head length degree of Frame is also kept intact, the just value of TFI that changes, so, adopt this method to carry out verification, resulting check results also is correct.
In the present embodiment, be not the base station to be received each frame data that radio network controller issues all test, and only test near the Frame of the arrival base station entry-into-force time point of submitting signaling in synchronised radio link reconfigure to.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the method for a making submitted signaling of base station radio link reconfiguration take effect comprises the steps:
A) after the base station receives the data of radio network controller transmission,, then from data, read Connection Frame Number CFN if judge have the radio link reconfiguration that will come into force to submit signaling to;
B) the Connection Frame Number CFN that reads is scaled system frame number SFN;
C) SFN that conversion is obtained and synchronised radio link reconfigure submit to the signaling effective time point appointed relatively;
D) if SFN is not less than this effective time point appointed, this radio link reconfiguration that then comes into force is submitted signaling to; This radio link reconfiguration is not submitted signaling to if SFN less than this effective time point appointed, does not then come into force, and continues to use the current radio link configuration of using.
2. method according to claim 1 is characterized in that, further comprises after the described step d) by the radio link reconfiguration that newly comes into force submitting to signaling to reconfigure Radio Link.
3. method according to claim 1, it is characterized in that, if described judgement has the radio link reconfiguration that will come into force to submit to signaling to be: submit to the signaling sign to judge to radio link reconfiguration, if this is masked as effective value, then explanation has the radio link reconfiguration that will come into force to submit signaling to; If this is masked as invalid value, then explanation does not have the radio link reconfiguration that will come into force to submit signaling to.
4. method according to claim 3 is characterized in that, if the described radio link reconfiguration that does not have to come into force is submitted signaling to, then directly in the base station these data is handled.
5. method according to claim 1, it is characterized in that, if judgement further comprises after having the radio link reconfiguration that will come into force to submit signaling in the described step a): the data frame head that the base station is received carries out verification, and judgement check results, if check results is correct, then from these data, read CFN, enter step b); Otherwise, abandon this checking data, return step a).
6. method according to claim 5 is characterized in that, described the data frame head is carried out verification further for the data frame head is carried out cyclic redundancy check (CRC).
7. method according to claim 6, it is characterized in that, described cyclic redundancy check (CRC) is for to carry out the CRC7 verification to all data frame heads, if all data frame head verifications are not all passed through, then this data frame head mistake, and the CFN mistake that comprises in this frame head, abandon this Frame, if there is the data frame head verification of a possibility length to pass through, then this data frame head is correct, and the CFN that this data frame head comprises is correct.
8. method according to claim 7, it is characterized in that, described deterministic process comprises: according to 3GPP agreement frame structures specified, from the data frame head, obtain the CRC7 check value of this data frame head, this value and the existing data frame head CRC7 check value that calculates are made comparisons, if equate that check results is correct; Otherwise, the check results mistake.
9. method according to claim 7 is characterized in that, this method further comprises: select the data frame head advanced row verification high to the data frame head length frequency of occurrences according to the frequency that Frame head length degree occurs.
10. method according to claim 6 is characterized in that, the verification of described CRC frame head further comprises: according to existing radio link configuration reading of data frame head, carry out the verification of CRC7 frame head, if check results is correct, then the CFN that comprises of this data frame head is correct; If check results mistake, then submit the radio link configuration reading of data frame head of appointment in the signaling to according to the radio link reconfiguration that is about to come into force, carry out the verification of CRC7 frame head, if check results is correct, then this data frame head is correct, and the CFN that comprises in this data frame head is correct, finishes checking procedure; If the check results mistake, then this Frame mistake, and the CFN mistake that comprises in this data frame head abandons this Frame.
11. method according to claim 1 is characterized in that, described method is carried out by the data framing protocol processing module in the base station.
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| CN101674649B (en) | 2008-09-11 | 2012-10-03 | 电信科学技术研究院 | Method, system and device of data transmission in paging state |
| CN101360128B (en) * | 2008-09-12 | 2012-11-21 | 华为终端有限公司 | Parameter maintaining method and apparatus |
| CN102263586B (en) * | 2010-05-31 | 2015-02-04 | 大唐移动通信设备有限公司 | Method, system and device for transmitting data frames |
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| CN1466294A (en) * | 2002-06-06 | 2004-01-07 | 华为技术有限公司 | Method for obtaining initial connection frame number in broadband CDMA mobile communication system |
| WO2005109935A1 (en) * | 2004-05-07 | 2005-11-17 | Matsushita Electric Industrial Co., Ltd. | Control station apparatus and base station apparatus |
| WO2006033636A1 (en) * | 2004-09-23 | 2006-03-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and arrangement for a synchronized hsdpa reconfiguration |
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| CN1317890A (en) * | 2001-05-16 | 2001-10-17 | 华为技术有限公司 | Method and device for obtaining and maintaining system frame number and linking between frame numbers |
| CN1466294A (en) * | 2002-06-06 | 2004-01-07 | 华为技术有限公司 | Method for obtaining initial connection frame number in broadband CDMA mobile communication system |
| WO2005109935A1 (en) * | 2004-05-07 | 2005-11-17 | Matsushita Electric Industrial Co., Ltd. | Control station apparatus and base station apparatus |
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