CN102665270B - Method for reducing uplink voice service transmission delay in long term evolution (LTE) system - Google Patents
Method for reducing uplink voice service transmission delay in long term evolution (LTE) system Download PDFInfo
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Abstract
The invention provides a method for reducing uplink voice service transmission delay in a long term evolution (LTE) system. The method comprises the following steps that: a base station judges whether a data volume corresponding to a buffer status report (BSR) index carried in a user equipment (UE) uplink data package is zero or not when subframes #n receive the UE (user equipment) uplink data package; if the data volume is not zero, a data volume saved value corresponding to the UE on the base station side is updated and subsequent resource distribution is carried out; if the data volume is zero, whether voice data are contained in the data package or not is judged; if the voice data are not contained, the BSR saved value corresponding to the UE on the base station side is updated and subsequent resource distribution is carried out; if the voice data are contained, the base station transmits uplink Grant (UL-GRANT). According to the transmission characteristic of the voice data package, the transmission delay of the uplink voice data package is adaptively reduced and the voice service transmission performance is effectively improved.
Description
Technical field
The present invention relates to a kind of method reducing uplink traffic transmission time delay in communication system, particularly relate to a kind of method reducing uplink voice traffic propagation delay time in LTE system.
Background technology
LTE (Long Term Evolution, Long Term Evolution) in system, speech business transmission has packet interval and arrives and the relatively-stationary feature of data package size, and for these features, LTE system adopts the machine-processed transmitting audio data bag of semi-continuous scheduling.Before bag closeness does not reach activation semi-continuous scheduling thresholding, speech data still adopts the mode of dynamic dispatching to transmit.
UE (User Equipment, subscriber equipment or terminal) start speech business after, upstream voice data will make UE produce conventional BSR(Buffer Status Report, Buffer Status Report) and start retxBSR-Timer(re-transmission BSR timer: its duration is determined by agreement TS36.331).After retxBSR-Timer time-out, the SR(Scheduling request that UE is triggered by conventional BSR, dispatch request) obtain UL-GRANT(uplink Grant, uplink authorization), and at corresponding PUSCH(Physical Uplink Shared Channel, Physical Uplink Shared Channel) transmitting audio data, BSR is reported to base station (Base Station, BS) to obtain further UL-GRANT to transmit follow-up VoP simultaneously.
Visible, UE needed the UL-GRANT first by reporting BSR to issue to obtain base station before carrying out upstream voice data transmission.UE reports BSR to obtain UL-GRANT the following two kinds situation:
If 1 is current without any UL-GRANT, as shown in Figure 1, triggerings SR is started timer retxBSR-Timer by the conventional BSR that UE produces, and base station issues UL-GRANT to UE distribution PUSCH resource after receiving SR, and UE is at PUSCH resource reporting BSR corresponding to UL-GRANT.If BSR is through HARQ(Hybrid Automatic Repeat Request, hybrid automatic repeat-request) maximum transmission times still error of transmission, then again trigger SR by conventional BSR after needing to wait until retxBSR-Timer time-out and obtain UL-GRANT.And before retxBSR-Timer time-out, UE will not carry out any uplink.If UE is correct in the PUSCH transmitted over resources that UL-GRANT is corresponding, then base station can be known the BSR of UE and then continue distribute ascending resource to UE and issue UL-GRANT.
If 2 have currently existed continuous print UL-GRANT, as shown in Figure 2, UE will restart timer periodicBSR-Timer(BSR periodic report timer after reporting BSR: its duration is determined by agreement TS36.331) and retxBSR-Timer.After any one timer expired, UE will regenerate BSR and at PUSCH uploading resource corresponding to UL-GRANT, the BSR that this knows by base station comprehensively continues afterwards UE Resources allocation with the BSR known before and issues UL-GRANT.
As shown in Figure 3, if less etc. VoP waiting for transmission, these data current can all be transmitted after obtaining UL-GRANT by SR by UE, the BSR index that companion data transfers to base station is zero, then when there is no other business, the Voice traffic data bag of follow-up arrival needs to wait for that retxBSR-Timer again triggers SR after time-out and obtains UL-GRANT, because in agreement, regulation timer retxBSR-Timer minimal time delay is 320ms, therefore uplink voice traffic will there will be comparatively long time delay.
Summary of the invention
The object of the present invention is to provide a kind of method reducing uplink voice traffic propagation delay time in LTE system, may there is the problem compared with long time delay in the uplink voice traffic existed to solve prior art.
In order to realize object of the present invention, the method reducing uplink voice traffic propagation delay time in LTE system provided by the invention comprises the following steps: base station, when subframe #n receives UE upstream data bag, judges whether the data volume that the BSR index that carries in described UE upstream data bag is corresponding is zero; If described data volume is zero, then judge whether comprise VoP in described UE upstream data bag; If comprise VoP, then issue UL-GRANT by base station.
According to a kind of preferred implementation of method reducing uplink voice traffic propagation delay time in above-mentioned LTE system, wherein, after judging to comprise VoP in described UE upstream data bag, also judge whether comprise redundant data in described VoP further;
If comprise redundant data in described VoP, then base station continues to issue UL-GRANT at subframe #n+LowRateSubSfn; If do not comprise redundant data in described VoP, then base station continues to issue UL-GRANT at subframe #n+High RateSubSfn.
According to a kind of preferred implementation of method reducing uplink voice traffic propagation delay time in above-mentioned LTE system, wherein, further comprising the steps of: UL-GRANT issues successfully, cycle criterion is carried out at corresponding upstream data time point in base station.
According to a kind of preferred implementation of method reducing uplink voice traffic propagation delay time in above-mentioned LTE system, wherein, further comprising the steps of: if described data volume is non-vanishing, then upgrade base station side to should UE data volume save value and carry out follow-up Resourse Distribute.
According to a kind of preferred implementation of method reducing uplink voice traffic propagation delay time in above-mentioned LTE system, wherein, further comprising the steps of: if do not comprise VoP in described UE upstream data bag, then upgrade base station side to should UE BSR save value and carry out follow-up Resourse Distribute.
According to a kind of preferred implementation of method reducing uplink voice traffic propagation delay time in above-mentioned LTE system, wherein, carry out follow-up Resourse Distribute described in refer to and issue UL-GRANT according to normal sequential.
The transmission feature that the present invention is directed to VoP reduces the propagation delay time of upstream voice data bag in an adaptive way, effectively improves the transmission performance of speech business.In addition, the present invention is the extension of protocol realization, has the advantage being easy to realize.
Accompanying drawing explanation
Fig. 1 is the design sketch that prior art does not exist the BSR in Ul-Grant situation and reports;
Fig. 2 is the design sketch that prior art exists the BSR in Ul-Grant situation and reports;
Fig. 3 is the design sketch that prior art carries out uplink voice traffic transmission;
Fig. 4 is the FB(flow block) of the preferred embodiment of the present invention;
Fig. 5 is the laser propagation effect comparison diagram of the preferred embodiment of the present invention and prior art.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
In order to solve the problem that in current LTE system, uplink voice traffic propagation delay time is larger, the present invention is by monitoring based in the PUSCH resource corresponding to the UL-GRANT of SR acquisition, transmission plumpness and the BSR value condition reported of terminal speech data, take adaptive mode to increase the transmission opportunity of VoP.
Fig. 1 shows the FB(flow block) of the preferred embodiment of the present invention, as step S100, after base station receives the SR of UE, distributes up PUSCH resource and issue UL-GRANT for UE.
Then as step S101, base station, after UL-GRANT successfully issues, receives upstream data bag at subframe #n, and monitors packet content.
Then as step S103, judged by base station, if data volume corresponding to the BSR index carried in packet is non-vanishing, then perform step S113 and step S115, upgrade base station side to should UE data volume save value and carry out follow-up Resourse Distribute.
Judged result as step S103 is zero, and the data volume corresponding to BSR index of also namely carrying in packet is zero, then perform step S105: judge whether comprise VoP in packet.If there is no VoP, then perform step S113 and step S115, as previously mentioned, upgrade base station side to should the BSR save value of UE.
As judged there is VoP in packet in step S105, then perform step S107: judge whether comprise redundant data in packet to carry out follow-up process.As having redundant data in packet, then perform step S111: at subframe #n+LowRateSubSfn(LowRateSubSfn: low-rate frame scheduling interval, implication be next time scheduling time point and the interval of current judgement time point) continue to issue UL-GRANT.If not containing redundant data in packet, then perform step S109: at subframe #n+High RateSubSfn(High RateSubSfn: two-forty subframe scheduling interval, implication be next time scheduling time point and the interval of current judgement time point) continue to issue UL-GRANT.In step S109 and step S111, UL-GRANT issues successfully, then return step S101: base station re-executes above-mentioned every computing at corresponding upstream data time point.As shown in Figure 5, as shown in Figure 5, compared with prior art, the present invention obviously can reduce the propagation delay time of upstream voice data business to the effect of the preferred embodiment of the present invention.
To sum up, the present invention is by monitoring based in the PUSCH resource corresponding to the UL-GRANT of SR acquisition, transmission plumpness and the BSR value condition reported of terminal speech data, adaptive mode is taked to increase the transmission opportunity of VoP, obviously can reduce the propagation delay time of upstream voice data bag, effectively promote the transmission performance of speech business; And the present invention is the extension of protocol realization, be easy to realize.
As known by the technical knowledge, the present invention can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Within the scope of the present invention all or be all included in the invention being equal to the change in scope of the present invention.
Claims (1)
1. reduce a method for uplink voice traffic propagation delay time in LTE system, it is characterized in that, comprise the following steps:
Base station, when subframe #n receives UE upstream data bag, judges whether the data volume that the BSR index that carries in described UE upstream data bag is corresponding is zero;
If described data volume is zero, then judge whether comprise VoP in described UE upstream data bag;
If comprise VoP in described UE upstream data bag, also judge whether comprise redundant data in VoP further;
If comprise redundant data in described VoP, then base station continues to issue UL-GRANT at subframe #n+LowRateSubSfn;
If do not comprise redundant data in described VoP, then base station continues to issue UL-GRANT at subframe #n+High RateSubSfn;
If do not comprise VoP in described UE upstream data bag, then upgrade base station side to should UE BSR save value and carry out follow-up Resourse Distribute;
If described data volume is non-vanishing, then upgrade base station side to should UE data volume save value and carry out follow-up Resourse Distribute;
Wherein, UL-GRANT issues successfully, and cycle criterion is carried out at corresponding upstream data time point in base station;
Describedly carry out follow-up Resourse Distribute and refer to and issue UL-GRANT according to normal sequential.
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| CN103891385B (en) * | 2011-08-16 | 2017-12-15 | 阿尔卡特朗讯 | Method and apparatus for controlling Buffer Status Report message |
| CN102932939A (en) * | 2012-10-12 | 2013-02-13 | 中兴通讯股份有限公司 | Method and system for optimizing uplink scheduling of LTE (Long Term Evolution) system, base station and terminal |
| CN106470501A (en) * | 2015-08-19 | 2017-03-01 | 中兴通讯股份有限公司 | A kind of dispatching method of uplink voice traffic, dispatching device and base station |
| CN106535347B (en) * | 2015-09-10 | 2019-09-17 | 大唐移动通信设备有限公司 | Uplink resource allocating method and device in voice service based on uplink scheduling request |
| CN106550472B (en) * | 2015-09-23 | 2020-11-17 | 中兴通讯股份有限公司 | Method and base station for improving scheduling delay of uplink voice service |
| CN106941728A (en) * | 2016-01-04 | 2017-07-11 | 普天信息技术有限公司 | A kind of up dynamic dispatching method and device |
| EP3449660B1 (en) | 2016-04-25 | 2021-01-27 | Telefonaktiebolaget LM Ericsson (publ) | Device and method for link adaptation in a wireless network |
| CN107347197B (en) * | 2016-05-06 | 2019-09-17 | 普天信息技术有限公司 | A kind of business transmitting method and device |
| CN109906646B (en) * | 2016-11-30 | 2021-02-12 | 华为技术有限公司 | Information transmission method, base station and terminal equipment |
| CN109246830A (en) * | 2017-04-28 | 2019-01-18 | 大唐移动通信设备有限公司 | A kind of uplink dynamic dispatching optimization method and device of voice service |
| CN114007233B (en) * | 2021-10-22 | 2024-03-22 | 锐迪科微电子科技（上海）有限公司 | Buffer status report BSR reporting method and device and electronic equipment |
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| KR20110055013A (en) * | 2009-11-19 | 2011-05-25 | 에스케이 텔레콤주식회사 | System and method for allocating a resource in uplink for voice services in high-speed wireless communication networks |
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| CN101730236A (en) * | 2008-10-30 | 2010-06-09 | 中兴通讯股份有限公司 | Resource scheduling method and system, base station and terminal therefor |
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