CN1921406A - Computing method for connecting frame number displacement of activation time in empty-orifice synchronous configuration signal - Google Patents
Computing method for connecting frame number displacement of activation time in empty-orifice synchronous configuration signal Download PDFInfo
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Abstract
The invention relates to a CNFOffSet calculation method of activate time in idle synchronous setting instruction. Wherein, it calculates the network internal processing, transmission delay Tdelay1, the processing time delay Tdelay2 of UE, the time delay Tdelay3 of idle transmission, and the time delay Tdelay4 of idle loss transmission, to dynamically calculate CFNOffset, to confirm the synchronous effect of setting parameter of UTRAN and UE, and shorten the time delay of idle synchronous setting instruction, to optimize the property of wireless network, shorten the calling time delay, and improve the idle synchronous setting success.
Description
Technical field
The present invention relates to the Dynamic calculation method of the empty-activation time in orifice synchronous configuration signal (Activation time) in Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access) (the being called for short WCDMA) cell mobile communication systems, relate in particular to the Dynamic calculation method of Connection Frame Number (Connection Frame Number) (hereinafter to be referred as CFN) side-play amount (CNFOffSet) of empty-activation time in orifice synchronous configuration signal.
Background technology
In empty-orifice synchronous configuration signal, network side generally need carry activationary time (Activation time) in signaling, this activationary time has indicated the frame number of the configuration take-effective that causes in the synchronous configuration signal that subscriber equipment (UserEquipment) (hereinafter to be referred as UE) changes, its span is 0 to 255, unit is 10ms, and it is the absolute frame number of CFN.
Radio network controller (Radio Network Controller) (hereinafter to be referred as RNC) system need obtain the CFN---NowCFN of synchronous configuration signal delivery time at computing activation during the time, be offset the CFNOffSet frame more backward, then activationary time ActiveCFN=(NowCFN+CFNOffSet) %256.
The configuration of above-mentioned CFNOffSet need guarantee before above-mentioned activationary time ActiveCFN is overtime, the configuration operation of network and UE both sides is finished, otherwise the new configuration that can't guarantee both sides comes into force simultaneously, thereby can cause UE and network both sides true synchronization not to switch to new configuration, cause synchronous configuration failure probably by old configuration; But, if the configuration of above-mentioned CFNOffSet is excessive, can prolong the flow process of synchronous configuration again, increase the mutual time of empty-orifice synchronous configuration signal, influence wireless network performance.
Summary of the invention
Because the signaling bear speed of empty-orifice synchronous configuration signal can change in the larger context, the length of empty-orifice synchronous configuration signal also has very big difference under different scenes simultaneously, uses static CFNOffSet configuration to be difficult to satisfy the demand of optimization of network performance.Therefore the reasonable disposition of CFNOffSet is the key of accurate computing activation time.
In view of above-mentioned, the object of the present invention is to provide the Dynamic calculation method of the CFNOffSet of empty-activation time in orifice synchronous configuration signal, the problem that its wireless network performance that causes in the time of overcoming the CFNOffSet static configuration of activationary time effectively descends.Adopt the present invention, do not need newly-increased configuration item, by the mapping table that obtains after discretization dynamic calculation activationary time apace just, raising systematic function.
To achieve these goals, the CFNOffSet computational methods of empty-activation time in orifice synchronous configuration signal of the present invention comprise the steps:
Step 1: the processing delay Tdelay2 that determines network side inter-process, transmission delay Tdelay1 and UE;
Step 2: obtain the byte length L behind the empty-orifice synchronous configuration signal coding and the signaling bear information of current use, wherein this signaling bear information comprises the transmission channel kinds of logic channel mapping of signaling bear correspondence and transformat (Transport Format) (hereinafter to be referred as the TF) collection of transmission channel maximum, wherein the TF collection of this transmission channel maximum comprises transmission block number TBNum at least, Radio Link control (Radio Link Control) (hereinafter to be referred as RLC) layer protocol data cell (Packet Data Unit) (hereinafter to be referred as PDU) size RLCTBSize and Transmission Time Interval TTI in the transmission block, and according to
The time delay Tdelay3 that calculating eats dishes without rice or wine to transmit, wherein
Step 3: according to predefined packet loss model, according to
The calculating time delay Tdelay4 that packet loss retransmits that eats dishes without rice or wine, wherein Tpoll is inquiry (Poll) duration of RLC, is disposed by wireless access network (UTRAN) side; Tdelaylink is RLC loopback (Round-Trip) link delay, and it is an approximate statistics constant, can obtain by measuring statistics;
Step 4: calculate above-mentioned CFNOffSet according to CFNOffSet=Tdelay1+Tdelay2+Tdelay3+Tdelay4.
Wherein, these computational methods also comprise:
Step 5: according to the configuration and the performance of network side, obtain a mapping table behind the CFNOffSet that the discretization aforementioned calculation obtains, wherein this mapping table classify length behind the above-mentioned empty-orifice synchronous configuration signal coding as, and unit is BYTE; Behavior signaling bear type, the unit of above-mentioned CFNOffSet is 10ms.
Wherein,
1) above-mentioned network side inter-process, transmission delay Tdelay1 are that network side inside obtains above-mentioned NowCFN to beginning in the time delay of eating dishes without rice or wine to send between the above-mentioned synchronous configuration signal;
2) the processing delay Tdelay2 of above-mentioned UE is that UE receives behind the above-mentioned synchronous configuration signal to the time delay of finishing the inner parameter configuration;
3) the above-mentioned time delay Tdelay3 that eats dishes without rice or wine to transmit eats dishes without rice or wine to begin to send above-mentioned synchronous configuration signal to the time delay being sent completely from network side, does not wherein comprise the time delay that packet loss retransmits;
4) the above-mentioned time delay Tdelay4 that eats dishes without rice or wine the packet loss re-transmission is because the packet loss of eating dishes without rice or wine causes RLC to retransmit the time delay of bringing.
The processing delay Tdelay2 of above-mentioned network side inter-process, transmission delay Tdelay1 and above-mentioned UE is comparatively fixing, and time delay is shorter, is similar to the statistics constant, obtains by measuring statistics.
Above-mentioned WinDelay is that NodeB goes up the time delay that Frame Protocol (Frame Protocol) (hereinafter to be referred as FP) window causes, calculate this WinDelay according to WinDelay=TOAWS/2+TOAWE+TProc, wherein above-mentioned TOAWS, TOAWE, NodeB processing time TProc are the parameters of above-mentioned FP window, and tentation data drops in the middle of the above-mentioned FP window.
Packet drop is complicated owing to eat dishes without rice or wine, and since in the agreement to the assurance of signaling propagation delay time, the present invention does not consider the situation that signaling repeatedly retransmits, according to measured result at ordinary times, the predefined packet loss model of the present invention in the above-mentioned steps 3 is:
1) loses last a few bag RLC data;
2) surpass 3 bags for Radio Resource control (Radio Resource Control) (hereinafter to be referred as RRC) layer reprovision signaling at above-mentioned rlc layer PDU grouping bag number, retransmit and be no more than 3 bags at most;
3) be no more than 3 bags for rrc layer reprovision signaling at above-mentioned rlc layer PDU grouping bag number, retransmit and be no more than 3 bags at most.
The dynamic calculation of CFNOffSet of the present invention, when guaranteeing that UTRAN and the synchronous configuration parameter in UE both sides come into force simultaneously, shortened the time delay of empty-orifice synchronous configuration signal again to greatest extent, optimized wireless network performance, shortening call delay, raising air interface synchronization reprovision success rate have all been had positive effect.
Below in conjunction with accompanying drawing, the concrete enforcement of the method for the invention is described in further detail.For those skilled in the art that, from the detailed description to the inventive method, above-mentioned and other purposes of the present invention, feature and advantage will be apparent.
Description of drawings
Fig. 1 and Fig. 2 are the block of informations of the different sizes schematic diagrames during by the different channel of thickness.
Fig. 3 is the flow chart of computational methods of the CFNOffSet of activationary time of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the concrete enforcement of the method for the invention is described in further detail.
Please refer to Fig. 1 and Fig. 2, the block of information of different sizes is by the different channel of thickness, time delay generally can be different, block of information is similar to the empty-orifice synchronous configuration signal behind the coding, the channel thickness is similar to the signaling bear of different service quality (Quality of Service) (hereinafter to be referred as Qos), therefore be necessary to come the different activationary time of Dynamic Selection, could satisfy the demand of system according to the empty-orifice synchronous configuration signal length behind the coding and the Qos of signaling bear.
In view of above-mentioned requirements, the computational methods of the CFNOffSet of activationary time as shown in Figure 3, comprise the steps: in the synchronous configuration signal of a kind of radio open of the present invention
Step 1: the processing delay Tdelay2 that determines network side inter-process, transmission delay Tdelay1 and UE;
Step 2: obtain the byte length L behind the empty-orifice synchronous configuration signal coding and the signaling bear information of current use, wherein this signaling bear information comprises the transmission channel kinds of logic channel mapping of signaling bear correspondence and the transformat TF collection of transmission channel maximum, wherein the transformat TF collection of this transmission channel maximum comprises transmission block number TBNum at least, rlc layer PDU size RLCTBSize in the transmission block, Transmission Time Interval TTI, and according to
The time delay Tdelay3 that calculating eats dishes without rice or wine to transmit, wherein
Step 3: according to predefined packet loss model, according to
The calculating time delay Tdelay4 that packet loss retransmits that eats dishes without rice or wine, wherein Tpoll is the Poll duration of RLC, is disposed by the UTRAN side; Tdelaylink is a RLC Round-Trip link delay, and it is an approximate statistics constant, can obtain by measuring statistics;
Step 4: calculate above-mentioned CFNOffSet according to CFNOffSet=Tdelay1+Tdelay2+Tdelay3+Tdelay4.
Step 5: according to the configuration and the performance of network side, obtain a mapping table behind the CFNOffSet that the discretization aforementioned calculation obtains, wherein this mapping table classify length behind the above-mentioned empty-orifice synchronous configuration signal coding as, and unit is BYTE; Behavior signaling bear type, the unit of above-mentioned CFNOffSet is 10ms.
It is as shown in table 1 according to the mapping table that above-mentioned steps obtains,
Table 1
| ＜＝32 | ＜＝80 | ＜＝128 | ＜＝176 | ＜＝224 | ＜＝272 | ＜＝320 | ＜＝368 | ＜＝416 | ＞416 | |
| 3.4K signaling | 50 | 70 | 82 | 94 | 106 | 118 | 130 | 142 | 154 | 166 |
| 13.6K signaling | 42 | 46 | 49 | 52 | 55 | 58 | 61 | 64 | 67 | 75 |
As known from Table 1, because length and signaling bear type difference behind the signaling ASN1 coding, minimum and maximum CFNOffSet differed 1.24 seconds, illustrated to use static CFNOffSet configuration can not satisfy the demand of optimization of network performance really.
The detailed performing step of the dynamic calculation of activationary time is described below, and it mainly comprises the steps:
The empty-orifice synchronous configuration signal that the judgement of step 1:RNC side chain of command will send, earlier empty-orifice synchronous configuration signal is encoded, signaling length after obtaining encoding, owing to also do not obtain definite CFNOffSet this moment, activationary time in the signaling behind the coding also is invalid so, need write down the skew of activationary time cell in the coding signaling in cataloged procedure;
Step 2:, check above-mentioned table 1, the CFNOffSet that can obtain suiting according to the signaling bear type of RNC side chain of command selection and the signaling length behind the coding;
Step 3: the signaling behind the buffer memory coding;
Step 4: CFNOffSet is disposed user entity to the UE correspondence, obtain the current CFN of UE, i.e. NowCFN from user's face simultaneously;
Step 5:RNC side chain of command just can obtain definite activationary time after receiving the NowCFN of user's face feedback, is (NowCFN+CFNOffSet) %256;
The new synchronous configuration information of the user entity of step 6:UE correspondence can come into force at above-mentioned (NowCFN+CFNOffSet) %256 constantly synchronously;
Step 7: take out the coding signaling of buffer memory, according to the skew of activationary time cell in the coding signaling, with the activationary time cell in the definite activationary time replacement coding signaling that calculates in the step 5;
Step 8: the activationary time of empty-orifice synchronous configuration signal calculates and cataloged procedure finishes.
Can find out from top description, the Dynamic calculation method of empty-activation time in orifice synchronous configuration signal of the present invention, under the situation that the signaling bear rate variation is faster, empty-orifice synchronous configuration signal length variations scope is wide at empty-orifice synchronous configuration signal, guaranteed that to greatest extent the empty-orifice synchronous configuration signal time delay shortens and wireless network performance optimization, provide a kind of easy and practical method to realize the adaptive configuration algorithm of activationary time in the synchronous configuration signal of radio open.
More than describe operation principle of the present invention in detail, but the example of this visualization of just lifting for the ease of understanding should not be considered to be limitation of the scope of the invention.Equally; the ordinary skill of technical field all can be according to the description of technical scheme of the present invention and preferred embodiment thereof under any; make various possible being equal to and change or replacement, but all these changes or replacement all should belong to the protection range of claim of the present invention.
Claims (8)
1, the Connection Frame Number side-play amount computational methods of empty-activation time in orifice synchronous configuration signal is characterized in that comprising the steps:
Step 1: the processing delay Tdelay2 that determines network side inter-process, transmission delay Tdelay1 and subscriber equipment;
Step 2: obtain the byte length L behind the empty-orifice synchronous configuration signal coding and the signaling bear information of current use, wherein this signaling bear information comprises the transmission channel kinds of logic channel mapping of signaling bear correspondence and the TFS Transport Format Set of transmission channel maximum, and calculates the time delay Tdelay3 that eats dishes without rice or wine to transmit;
Step 3:, calculate the time delay Tdelay4 that the packet loss of eating dishes without rice or wine retransmits according to predefined packet loss model;
Step 4: calculate above-mentioned Connection Frame Number side-play amount CFNOffSet according to CFNOffSet=Tdelay1+Tdelay2+Tdelay3+Tdelay4.
2, computational methods according to claim 1 is characterized in that also comprising:
Step 5: according to the configuration and the performance of network side, obtain a mapping table behind the Connection Frame Number side-play amount CFNOffSet that the discretization aforementioned calculation obtains, wherein this mapping table classify length behind the above-mentioned empty-orifice synchronous configuration signal coding as, and unit is BYTE; Behavior signaling bear type, the unit of above-mentioned Connection Frame Number side-play amount CFNOffSet is 10ms.
3, computational methods according to claim 2, the TFS Transport Format Set that it is characterized in that the transmission channel maximum in the above-mentioned steps 2 comprises transmission block number TBNum at least, protocol data unit of wireless links control layer size RLCTBSize in the transmission block, Transmission Time Interval TTI.
4, computational methods according to claim 3 is characterized in that
In above-mentioned steps 2, according to
The time delay Tdelay3 that calculating eats dishes without rice or wine to transmit, wherein
In above-mentioned steps 3, according to
The calculating time delay Tdelay4 that packet loss retransmits that eats dishes without rice or wine, wherein Tpoll is the inquiry duration of Radio Link control, is disposed by the wireless access network side; Tdelaylink is a Radio Link control loopback link delay, and it is an approximate statistics constant, obtains by measuring statistics.
5, computational methods according to claim 4 is characterized in that:
1) above-mentioned network side inter-process, transmission delay Tdelay1 are that network side inside obtains the Connection Frame Number NowCFN of above-mentioned synchronous configuration signal delivery time to beginning in the time delay of eating dishes without rice or wine to send between the above-mentioned synchronous configuration signal;
2) the processing delay Tdelay2 of above-mentioned subscriber equipment is that subscriber equipment is received behind the above-mentioned synchronous configuration signal to the time delay of finishing the inner parameter configuration;
3) the above-mentioned time delay Tdelay3 that eats dishes without rice or wine to transmit eats dishes without rice or wine to begin to send above-mentioned synchronous configuration signal to the time delay being sent completely from network side, and wherein it does not comprise the time delay that packet loss retransmits;
4) the above-mentioned time delay Tdelay4 that eats dishes without rice or wine the packet loss re-transmission is because the packet loss of eating dishes without rice or wine causes Radio Link control to retransmit the time delay of bringing.
6, computational methods according to claim 4, the processing delay Tdelay2 that it is characterized in that above-mentioned network side inter-process, transmission delay Tdelay1 and above-mentioned subscriber equipment is the statistics constant that is similar to, and obtains by measuring statistics.
7, computational methods according to claim 4, it is characterized in that above-mentioned WinDelay is that NodeB goes up the time delay that the Frame Protocol window causes, calculate this WinDelay according to WinDelay=TOAWS/2+TOAWE+TProc, wherein above-mentioned TOAWS, TOAWE, NodeB processing time TProc are the parameters of above-mentioned Frame Protocol window, and data drop in the middle of the above-mentioned Frame Protocol window.
8, computational methods according to claim 4 is characterized in that predefined packet loss model is in the above-mentioned steps 3:
1) loses last a few bag Radio Link control data;
2) surpass 3 bags for radio resource control layer reprovision signaling at above-mentioned protocol data unit of wireless links control layer grouping bag number, retransmit and be no more than 3 bags at most;
3) be no more than 3 bags for radio resource control layer reprovision signaling at above-mentioned protocol data unit of wireless links control layer grouping bag number, retransmit and be no more than 3 bags at most.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101170739B (en) * | 2007-11-30 | 2010-12-08 | 华为技术有限公司 | Configuration method and device for data packets to connect from public control physical channel to frame number |
| CN102845110A (en) * | 2010-03-12 | 2012-12-26 | 阿尔卡特朗讯公司 | Network scheduling for energy efficiency |
| CN101662356B (en) * | 2008-08-25 | 2013-06-05 | 电信科学技术研究院 | Method and device for synchronizing control signaling in EMBMS system |
| CN104955117A (en) * | 2015-06-30 | 2015-09-30 | 大唐移动通信设备有限公司 | Activation time calculating method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1150704C (en) * | 2001-05-16 | 2004-05-19 | 华为技术有限公司 | Method and device for obtaining and maintaining system frame number and linking between frame numbers |
| CN1218522C (en) * | 2002-06-06 | 2005-09-07 | 华为技术有限公司 | Method for obtaining initial connection frame number in broadband CDMA mobile communication system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101170739B (en) * | 2007-11-30 | 2010-12-08 | 华为技术有限公司 | Configuration method and device for data packets to connect from public control physical channel to frame number |
| CN101662356B (en) * | 2008-08-25 | 2013-06-05 | 电信科学技术研究院 | Method and device for synchronizing control signaling in EMBMS system |
| CN102845110A (en) * | 2010-03-12 | 2012-12-26 | 阿尔卡特朗讯公司 | Network scheduling for energy efficiency |
| CN102845110B (en) * | 2010-03-12 | 2015-09-09 | 阿尔卡特朗讯公司 | For the network scheduling of energy efficiency |
| CN104955117A (en) * | 2015-06-30 | 2015-09-30 | 大唐移动通信设备有限公司 | Activation time calculating method and device |
| CN104955117B (en) * | 2015-06-30 | 2018-08-21 | 大唐移动通信设备有限公司 | A kind of method and device calculating activationary time |
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