CN100438490C - Average data issuing time regulating method based on statistic - Google Patents
Average data issuing time regulating method based on statistic Download PDFInfo
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- CN100438490C CN100438490C CNB2004100753036A CN200410075303A CN100438490C CN 100438490 C CN100438490 C CN 100438490C CN B2004100753036 A CNB2004100753036 A CN B2004100753036A CN 200410075303 A CN200410075303 A CN 200410075303A CN 100438490 C CN100438490 C CN 100438490C
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Abstract
The present invention relates to a data issuing time regulating method based on statistical average, which comprises: A) an RNC frame protocol processing layer receives and process data issued by an MAC layer, and processed data is saved in a downstream transmission buffer area; B) a data issue timer is set, and data is sequentially issued to a Node B from the downstream transmission buffer area according to the overtime value of the timer; C) a sampling time period is set, and TOA values of each time regulation control frame from the Node B in the sampling time period are saved; the arithmetic average value of all of the TOA values is calculated after the sampling time period; D) arithmetic average value the TOA values is used for automatically regulating the overtime value of the timer. The method of the present invention can effectively avoid the excess regulation of data issuing time.
Description
Technical field
The present invention relates to wireless communication field, refer to a kind of especially from radio network controller (Radio Network Controller, the data distributing time adjusting method when RNC) issuing data to base station node B.
Background technology
In NodeB, safeguarding the receive window of data, be called time window, as shown in Figure 1, when the data that issue as RNC drop on outside the time window, NodeB promptly can be by (the Iub Interface (between Node B and RNC) of the standard interface between radio network controller and the base station, IUB) send out a time on the in-band signalling process of interface FP (Frame Protocol) protocol definition and adjust control frame, have the difference TOA of actual due in of data and time window terminal point in the frame to RNC.The RNC time of receipt (T of R) is adjusted after the control frame, should adjust data distributing accordingly constantly so that data are dropped within the time of reception window, with reduce data buffer time of NodeB or avoid owing to NodeB in time the data that cause of deal with data abandon.
Time is adjusted implementation method and can effectively resist clock drift, propagation delay time fluctuation efficiently; And the time of a bad luck adjust to realize causing the ping-pong, IUB interface of downlink data actual time of arrival because the time is adjusted a series of ill effects such as the load that control frame too much causes increases the weight of, frame losing.
Available technology adopting is adjusted the adjustment mode that control frame settles at one go according to the time: because the TOA parameter in the time adjustment control frame has reflected the difference of actual due in of downlink data and time window terminal point, if it is less that the time delay of IUB interface changes, it is contemplated that, if the moment that next downlink data can be issued shifts to an earlier date or the hysteresis reasonable time accordingly, data are dropped in the time window.
As shown in Figure 2, at Connection Frame Number is that the data that issued in 150 o'clock have dropped on outside the receive window, NodeB adjusts control frame with return time, supposes TOA=-5ms in the frame, if then RNC with next data distributing constantly in advance 5ms the actual time of arrival of data is dropped within the receive window.
As can be seen from the above, the major defect of the time that settles at one go of this direct adjustment Transmission Time Interval adjustment mode is to be easy to generate adjustment.As shown in Figure 3, equal at 2 o'clock at RNC CFN (Connection Frame Number), variation has taken place in the IUB interface time delay, therefore the data of CFN=2 arrive NodeB, drop on TOAWE (terminal point of time window) back, suppose that TOA is-6ms, because the cause of up-downgoing time delay, the last line time of this CFN is adjusted control frame and is just arrived after RNC CFN=7, and this just works after being adjusted at RNC CFN=8 with regard to the time that means FP.It is constant to suppose that during this period of time time delay increases situation, and RNCCFN=3,4,5,6,7 downlink data just all can return line time and adjust control frame, supposes to adopt the adjustment of above-mentioned single step, cross and adjust with regard to very easily generation.When time window hour, cross the vibration that the time of adjusting even may cause adjusts, make system seriously unstable.
Summary of the invention
The invention provides a kind of data distributing time adjusting method that can effectively avoid adjustment, comprise the following steps: based on statistical average
The Frame Protocol processing layer of radio network controller (RNC) receives and handles the data that the media access control MAC layer issues, with the descending transmission buffering area of storage to after handling;
One data distributing timer is set, and the timeout value by described timer periodically issues data to base station node B in turn from described descending transmission buffering area; Wherein, the timeout value of described timer, the arithmetic mean of poor TOA value is adjusted automatically according to the time of advent that calculates.
According to said method of the present invention, the arithmetic mean of the described TOA value that calculates is specially:
Set a cycle in sampling time, store the TOA value of adjusting control frame in this cycle in sampling time from each time of NodeB, behind this sampling time end cycle, calculate the arithmetic mean of each TOA value.
According to said method of the present invention, have blanking time between the described cycle in sampling time, this blanking time is greater than the two-way time delay of IUB interface between RNC and the NodeB and the IUR interface between the RNC.
According to said method of the present invention, the arithmetic mean of the TOA value that described basis calculates is adjusted the timeout value of timer automatically, comprising: the arithmetic mean with the TOA value adds the timeout value that the current timeout value of timer upgrades as timer.
According to said method of the present invention, if the current timeout value of timer is 0, then change Connection Frame Number to the MAC request by RNC, the initial timeout value of timer is set simultaneously.
According to said method of the present invention,, the initial timeout value of timer is set simultaneously if the current timeout value of timer greater than the Transmission Time Interval of MAC layer, then changes Connection Frame Number by RNC to the MAC request.
According to said method of the present invention, the initial start time in described cycle in sampling time and described timer are synchronous.
According to said method of the present invention, the initial start time in described cycle in sampling time is that RNC receives the corresponding moment of adjusting control frame from first time of NodeB.
The advantage of the inventive method is as follows:
The present invention adopts the method for statistical average can effectively avoid because congested the crossing of causing of fragmentary packet adjusted;
The present invention in the time in sampling interval not the mechanism adjusted of processing time crossing of having avoided that round-trip delay causes adjust;
Cycle in sampling time of the inventive method and time in sampling interval can and be realized flexible configuration according to concrete environment.
Description of drawings
Fig. 1 is a prior art time window schematic diagram of mechanism.
Fig. 2 adjusts one of schematic diagram for the prior art time.
Fig. 3 adjusts two of schematic diagram for the prior art time.
Fig. 4 carries out the schematic diagram of time adjustment for the present invention adopts timer.
Embodiment
The invention provides a kind of data distributing time adjusting method, effectively overcome the shake of clock drift and transmission link time-delay, the ping-pong that the adjustment mode of avoiding settling at one go may cause and cross and adjust the influence of high-level business based on statistical average.
Referring to Fig. 4, medium access control (Medium Access Control, MAC) Ceng data are after sending to the frame protocol of RNC, processing through frame protocol, put into a descending transmission buffering area, start a descending transmission timer simultaneously, treat that timer expiry is afterwards just with data distributing.The realization that will issue data time adjustment function like this is limited to frame protocol and handles, and avoids the participation of medium Access Layer.
The basic handling step that the data distributing time of the present invention is adjusted is as follows:
The Frame Protocol processing layer of RNC receive adjust control frame from time of NodeB after, be not to adjust down sending time immediately, but add up the assembly average of the TOA of institute's free adjustment control frame of receiving within one period cycle in sampling time;
After cycle in sampling time, adjust the timeout value of timer, also promptly adjust the downlink data delivery time of RNC according to the assembly average of the TOA that obtains;
Adjusted after the descending delivery time, for fear of the adjustment of crossing that causes owing to propagation delay time, RNC can (this time should not handled the time adjustment request of NodeB greater than (Iur Interfacebetween RNC and RNC, IUR) the two-way time delay of interface) between IUB interface and the RNC in a period of time.
But the TOA mean value that the present invention adopts the repeatedly time of getting NodeB in a period of time to adjust to be asked is adjusted the timeout value of descending transmission timer as adjustment amount; Concrete method of adjustment can be: the timeout value that the TOA mean value that calculates and timer is current sums up computing, with the timeout value of result of calculation as the renewal of timer.Adjust for fear of crossing simultaneously; after the timeout value of having adjusted descending transmission timer; in the segment protect time (blanking time between the sampling period), do not handle the time of NodeB and adjust request; the mechanism of will adjusting the time is orientated a kind of process of feedback adjusting at a slow speed as; rather than quick feedback procedure, can effectively overcome the clock drift of RNC-NodeB and the traffic carrying capacity of IUB interface and change the delay variation that causes.
In said method of the present invention, if the current timeout value of timer is 0 or greater than the Transmission Time Interval of MAC layer, then change Connection Frame Number to the MAC request by RNC, the initial timeout value of timer is set simultaneously.
In said method of the present invention, the initial start time in cycle in sampling time can be synchronous with timer, perhaps begins to start sampling when adjusting control frame from first of NodeB when RNC receives time.
Claims (8)
1, a kind of data distributing time adjusting method based on statistical average comprises the following steps:
The Frame Protocol processing layer of radio network controller (RNC) receives and handles the data that the media access control MAC layer issues, with the descending transmission buffering area of storage to after handling;
One data distributing timer is set, and the timeout value by described timer periodically issues data to base station node B in turn from described descending transmission buffering area; Wherein, the timeout value of described timer, the arithmetic mean of poor TOA value is adjusted automatically according to the time of advent that calculates.
2, the data distributing time adjusting method based on statistical average as claimed in claim 1, it is characterized in that: the arithmetic mean of the described TOA value that calculates is specially:
Set a cycle in sampling time, store the TOA value of adjusting control frame in this cycle in sampling time from each time of NodeB, behind this sampling time end cycle, calculate the arithmetic mean of each TOA value.
3, the data distributing time adjusting method based on statistical average as claimed in claim 2, it is characterized in that: have blanking time between the described cycle in sampling time, this blanking time is greater than the two-way time delay of IUB interface between RNC and the NodeB and the IUR interface between the RNC.
4, the data distributing time adjusting method based on statistical average as claimed in claim 2, it is characterized in that: the arithmetic mean of the TOA value that described basis calculates is adjusted the timeout value of timer automatically, comprising: the arithmetic mean with the TOA value adds the timeout value that the current timeout value of timer upgrades as timer.
5, the data distributing time adjusting method based on statistical average as claimed in claim 4 is characterized in that: if the current timeout value of timer is 0, then change Connection Frame Number by RNC to the MAC request, the initial timeout value of timer is set simultaneously.
6, the data distributing time adjusting method based on statistical average as claimed in claim 4, it is characterized in that: if the current timeout value of timer is greater than the Transmission Time Interval of MAC layer, then change Connection Frame Number to the MAC request, the initial timeout value of timer is set simultaneously by RNC.
7, the data distributing time adjusting method based on statistical average as claimed in claim 4, it is characterized in that: the initial start time in described cycle in sampling time and described timer are synchronous.
8, the data distributing time adjusting method based on statistical average as claimed in claim 4 is characterized in that: the initial start time in described cycle in sampling time is that RNC receives the corresponding moment of adjusting control frame from first time of NodeB.
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| CNB2004100753036A CN100438490C (en) | 2004-08-27 | 2004-08-27 | Average data issuing time regulating method based on statistic |
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| CNB2004100753036A CN100438490C (en) | 2004-08-27 | 2004-08-27 | Average data issuing time regulating method based on statistic |
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| CN100438490C true CN100438490C (en) | 2008-11-26 |
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| CN101969689A (en) * | 2009-07-27 | 2011-02-09 | 中兴通讯股份有限公司 | Method for realizing time synchronization and method for obtaining dispatching information |
| CN101841576B (en) * | 2010-05-26 | 2013-03-27 | 新邮通信设备有限公司 | Base station access method, base station and wireless network controller |
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| JP2001308924A (en) * | 2000-04-27 | 2001-11-02 | Nec Corp | Traffic generator |
| WO2002073901A1 (en) * | 2001-03-09 | 2002-09-19 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and device for transmission of packet data traffic on a multiplexed link |
| EP1271796A2 (en) * | 2001-06-26 | 2003-01-02 | Kabushiki Kaisha Toshiba | Code division multiple access system using a queue for each spread coefficient and method for controlling channel correction timing of the system |
| US20030026326A1 (en) * | 2001-08-01 | 2003-02-06 | Srikant Jayaraman | Method and apparatus for adjusting delay in systems with time-burst pilot and fractionally spaced equalizers |
| WO2003096712A1 (en) * | 2002-05-10 | 2003-11-20 | Interdigital Technology Corporation | System for permitting control of the purging of a node b by the serving radio network controller |
| CN1467971A (en) * | 2002-07-10 | 2004-01-14 | 华为技术有限公司 | Method and equipment for controlling wireless interface flow in wireless network |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001308924A (en) * | 2000-04-27 | 2001-11-02 | Nec Corp | Traffic generator |
| WO2002073901A1 (en) * | 2001-03-09 | 2002-09-19 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and device for transmission of packet data traffic on a multiplexed link |
| EP1271796A2 (en) * | 2001-06-26 | 2003-01-02 | Kabushiki Kaisha Toshiba | Code division multiple access system using a queue for each spread coefficient and method for controlling channel correction timing of the system |
| US20030026326A1 (en) * | 2001-08-01 | 2003-02-06 | Srikant Jayaraman | Method and apparatus for adjusting delay in systems with time-burst pilot and fractionally spaced equalizers |
| WO2003096712A1 (en) * | 2002-05-10 | 2003-11-20 | Interdigital Technology Corporation | System for permitting control of the purging of a node b by the serving radio network controller |
| CN1467971A (en) * | 2002-07-10 | 2004-01-14 | 华为技术有限公司 | Method and equipment for controlling wireless interface flow in wireless network |
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Effective date of registration: 20180427 Address after: California, USA Patentee after: Global innovation polymerization LLC Address before: London, England Patentee before: GW partnership Co.,Ltd. Effective date of registration: 20180427 Address after: London, England Patentee after: GW partnership Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
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