CN102883452B - A kind of uplink semi-persistent scheduling method - Google Patents
A kind of uplink semi-persistent scheduling method Download PDFInfo
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Abstract
The invention provides a kind of uplink semi-persistent scheduling method, comprising: eNodeB is that UE carries out uplink semi-persistent scheduling, be the semi-persistent resource of UE collocating uplink transmission, UE carries out transmitting uplink data in configuration in the semi-persistent resource of self; As UE, without reporting to eNodeB during transfer of data, to comprise buffer status report (BSR) be the packet of 0, when comprise BSR be 0 packet report number of times to exceed default BSR thresholding N continuously time, eNodeB sends to described UE and stops DCI, and the semi-persistent resource of described UE is distributed in release after the acknowledge message receiving UE feedback.By the way, when UE is without transfer of data, issues DCI instruction by eNodeB and carry out resource release, make eNodeB and UE can ensure the consistency of resource status.
Description
Technical field
The present invention relates to the dispatching method in communication system, particularly a kind of uplink semi-persistent scheduling method.
Background technology
Current 230MHz frequency range is mainly used in data radio station and bears long-range data collection task, can only be used for some simple communications applications because the speed provided is very low, cannot meet intelligent grid and the growing business demand of Sensor Network.According to the planning in national grid future, require to find a kind of new broadband communications technologies, meet the business demand in its distribution automation, load management, power information collection, smart power grid user service, emergency first-aid repair, the large field of special area video monitoring six.
At present, 230MHz frequency range product based on TD-LTE technology is that the demand provides good solution, this product is inherited in the smaller advantage of the intersymbol interference of the channel relatively flat of orthogonal multi-sub carrier transmission uniqueness of OFDM and channel, innovatively play the expansibility of OFDMA system, frequency selectivity, dispatching flexibility etc., and creationaryly absorb carrier aggregation, the advanced communication theory such as frequency spectrum perception, constitute low-power consumption of new generation, high spectrum utilization, the multi-business communication system flexibly of high reliability.Farthest can meet the business need of power load monitoring system, simultaneously for the planning of national grid next generation network provides solid technological accumulation and Applied D emonstration.
In view of data transmission terminal position in national grid fix, number pass the moment fix, therefore upstream data adopt semi-persistent scheduling (SPS:Semi-PersistentScheduling) pattern: once authorize, transmit continuously.
For semi-persistent scheduling, 3GPP is described layer one, layer two, layer three respectively in 36.213 agreements, 36.321 agreements, 36.331 agreements.After uplink semi-persistent scheduling is enable, the scheduling interval of UE by: system up-downgoing proportioning, semiPersistSchedIntervalUL and twoIntervalsConfig determine.The delivery mode of uplink semi-persistent resource is just like under type:
1, eNodeB sends to UE the release that DCI indicates uplink semi-persistent scheduling resource authorization;
2, after in uplink semi-persistent resource, the secondary transmission of continuous implicitReleaseAfter (layer three configures) comprises the new MACPDU of ' 0 ' individual MACSDU, UE should discharge the mandate of uplink semi-persistent scheduling resource immediately;
3, eNodeB sends the release of RRC information instruction uplink semi-persistent scheduling resource authorization to UE.
In 3GPP, uplink semi-persistent scheduling is applied in that frequency range is continuous and minimum scheduling resource is the wireless communication system of 180kHz at frequency domain; And be not best uplink semi-persistent scheduling method for the discrete wireless communication system of frequency range that Continuous Band is 25kHz, data transmission terminal position is fixed, the number biography moment is comparatively fixed, particularly,
1) UE discharges the mandate of uplink semi-persistent scheduling resource voluntarily after the continuous implicitReleaseAfter of uplink semi-persistent resource (layer three configures) secondary transmission comprises the new MACPDU of ' 0 ' individual MACSDU; If when the packet number that eNodeB receives the above-mentioned type is less than implicitReleaseAfter, the above-mentioned uplink semi-persistent scheduling resource of eNodeB side does not discharge, and makes the resource status of eNodeB side and UE side inconsistent;
2) uplink semi-persistent scheduling of resource configuration parameter is more, makes eNodeB side, UE side algorithm process more complicated, data dispatch may be caused not process in time, and Qos can not get ensureing.
Summary of the invention
The invention provides a kind of uplink semi-persistent scheduling method, the situation that eNodeB and the UE side resource status that the autonomous releasing resource of UE can be avoided to cause is inconsistent.
For achieving the above object, the present invention adopts following technical scheme:
A kind of uplink semi-persistent scheduling method, comprising:
ENodeB is that UE carries out uplink semi-persistent scheduling, and be the semi-persistent resource of UE collocating uplink transmission, UE carries out transmitting uplink data in configuration in the semi-persistent resource of self;
Without reporting to eNodeB during transfer of data, to comprise buffer status report (BSR) be the packet of 0 to UE, when comprise BSR be 0 packet report number of times to exceed default BSR thresholding N continuously time, eNodeB sends to described UE and stops DCI, and the semi-persistent resource of described UE is distributed in release after the acknowledge message receiving UE feedback.
Preferably, after eNodeB sends termination DCI to described UE, the method comprises further: eNodeB is before the acknowledge message not receiving described UE feedback, if send the number of times stopping DCI to reach default DCI thresholding M, then the semi-persistent resource of described UE is distributed in described eNodeB release.
Preferably, described eNodeB is UE when carrying out uplink semi-persistent scheduling, does not configure parameter s emiPersistSchedIntervalUL and twoIntervalsConfig;
Described UE in configuration to the semi-persistent resource of self being carried out transmitting uplink data is: each sub-frame of uplink of UE after semi-persistent resource configuration is enable carries out transmitting uplink data.
Preferably, the method comprises further: when eNodeB receives the ascending resource application of spatial load forecasting user and do not have idling-resource to distribute, described eNodeB sends to described UE and stops DCI, the semi-persistent resource of described UE is distributed in release, and gives described spatial load forecasting user by the Resourse Distribute of release;
When after the described spatial load forecasting user end of transmission, described semi-persistent resource is distributed to described UE by eNodeB again.
As seen from the above technical solution, in the present invention, eNodeB is that UE carries out uplink semi-persistent scheduling, and be the semi-persistent resource of UE collocating uplink transmission, UE carries out transmitting uplink data in configuration in the semi-persistent resource of self; As UE, without reporting to eNodeB during transfer of data, to comprise buffer status report (BSR) be the packet of 0, when comprise BSR be 0 packet report number of times to exceed default BSR thresholding N continuously time, eNodeB sends to described UE and stops DCI, and the semi-persistent resource of described UE is distributed in release after the acknowledge message receiving UE feedback.By the way, when UE is without transfer of data, issues DCI instruction by eNodeB and carry out resource release, make eNodeB and UE can ensure the consistency of resource status.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of uplink semi-persistent scheduling method in the present invention.
Embodiment
For making object of the present invention, technological means and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is described in further details.
Next, only for 230MHz national grid radio communication, specific implementation of the present invention is described, wherein, the UE carrying out uplink semi-persistent scheduling is the general data acquisition terminal in national grid.In fact, method of the present invention can also be used in other wireless communication system and other wireless terminals simultaneously.Particularly, in the present invention the method flow of uplink semi-persistent scheduling as shown in Figure 1, the method comprises:
Step 101, eNodeB is that UE carries out uplink semi-persistent scheduling, is the semi-persistent resource of UE collocating uplink transmission.
Wherein, eNodeB is that the mode that UE carries out semi-persistent resource configuration can adopt and existing identical mode, the scheduling interval of UE is determined by system up-downgoing proportioning, semiPersistSchedIntervalUL and twoIntervalsConfig, UE according to above-mentioned three parameters determine to dispatch to self, the uplink subframe number that can use in the cycle, and use in a step 102 in corresponding semi-persistent resource and carry out transmitting uplink data.
Or, for reducing the algorithm process complexity of eNodeB side and UE side, preferably, also semiPersistSchedIntervalUL and twoIntervalsConfig parameter can no longer be sent to UE, UE is only according to the system up-downgoing proportioning determination sub-frame of uplink known in advance, and each sub-frame of uplink in a step 102 after semi-persistent resource configuration is enable carries out transmitting uplink data.Like this, decrease the configuration parameter of uplink semi-persistent scheduling of resource, reduce the algorithm process complexity of eNodeB side and UE side, ensure that data dispatch can be processed in time, ensure the QoS of UE.
Step 102, UE carries out transmitting uplink data in configuration in the semi-persistent resource of self.
Step 103, without reporting to eNodeB during transfer of data, to comprise buffer status report (BSR) be the packet of 0 to UE.
In the prior art, during normal transmission, BSR is not all 0.In the present invention, for notice eNodeB is without transfer of data, send the packet comprising BSR=0, so that whether eNodeB decision-making discharges the semi-persistent resource distributing to UE to it.
Step 104, judge to comprise BSR be 0 packet report number of times whether to exceed default BSR thresholding N continuously, if so, then perform step 105, otherwise return step 102.
When UE reports the number of times of the packet comprising BSR=0 to be greater than N continuously, show that UE does not have transfer of data for some time, if hold over semi-persistent resource, the wasting of resources can be caused, at this moment, by step 105, eNodeB notifies that UE discharges semi-persistent resource.Wherein, N is default BSR thresholding, and those skilled in the art can arrange its size as required voluntarily.
Step 105, eNodeB sends to UE and stops DCI, and the semi-persistent resource of this UE is distributed in release after the acknowledge message receiving UE feedback.
By the judgement of abovementioned steps, eNodeB finds that UE does not have transfer of data within a period of time, and for improving resource utilization, eNodeB sends to UE and stops DCI, notifies that its semi-persistent resource is distributed in UE release.UE receives to eNodeB feeding back confirmation message after this termination DCI, and eNodeB discharges respective resources after receiving this acknowledge message.
By the release process in the present invention, make UE after reaching certain accumulative frequency without transfer of data, initiatively can not discharge semi-persistent resource, and initiated the release of semi-persistent resource by eNodeB, UE discharges semi-persistent resource after receiving termination DCI; Thus avoid due to UE initiatively releasing resource and the inconsistent situation of UE and the eNodeB side resource status that causes, ensure the release of uplink semi-persistent resource accurately and quick.
So far, basic in the present invention uplink semi-persistent scheduling method flow terminates.
Further, consider that eNodeB does not receive the situation of UE feeding back confirmation message, the present invention preferably, following process can also be comprised further: eNodeB is before the acknowledge message not receiving UE feedback after eNodeB sends termination DCI to described UE, if send the number of times stopping DCI to reach default DCI thresholding M, then the semi-persistent resource of this UE is distributed in eNodeB release.Wherein, the value of M can be arranged as required by those skilled in the art.
In addition, also may there is the higher spatial load forecasting user of priority level in system, consider and the demand that these users use for resource can also comprise following process in the present invention:
When eNodeB receive spatial load forecasting user ascending resource application and current do not have idling-resource to distribute time, this eNodeB gathers UE to any general data of carrying out semi-persistent scheduling and sends termination DCI, the semi-persistent resource of this UE is distributed in release, and by the Resourse Distribute of release to spatial load forecasting user; After the DTD of this spatial load forecasting user, above-mentioned uplink semi-persistent Resourse Distribute transmits to the data acquisition user be terminated by eNodeB again.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (4)
1. a uplink semi-persistent scheduling method, is characterized in that, the method comprises:
ENodeB is that UE carries out uplink semi-persistent scheduling, and be the semi-persistent resource of UE collocating uplink transmission, UE carries out transmitting uplink data in configuration in the semi-persistent resource of self;
Without reporting to eNodeB during transfer of data, to comprise buffer status report (BSR) be the packet of 0 to UE, when comprise BSR be 0 packet report number of times to exceed default BSR thresholding N continuously time, eNodeB sends to described UE and stops DCI, described UE discharges the semi-persistent resource of described UE after receiving described termination DCI, and to described eNodeB feedback acknowledgment information;
The semi-persistent resource of described UE is distributed in described eNodeB release after the acknowledge message receiving UE feedback.
2. method according to claim 1, it is characterized in that, after eNodeB sends termination DCI to described UE, the method comprises further: eNodeB is before the acknowledge message not receiving described UE feedback, if send the number of times stopping DCI to reach default DCI thresholding M, then the semi-persistent resource of described UE is distributed in described eNodeB release.
3. method according to claim 1, is characterized in that, described eNodeB is UE when carrying out uplink semi-persistent scheduling, does not configure parameter s emiPersistSchedIntervalUL and twoIntervalsConfig;
Described UE in configuration to the semi-persistent resource of self being carried out transmitting uplink data is: each sub-frame of uplink of UE after semi-persistent resource configuration is enable carries out transmitting uplink data.
4. the method according to claim 1,2 or 3, it is characterized in that, the method comprises further: when eNodeB receives the ascending resource application of spatial load forecasting user and do not have idling-resource to distribute, described eNodeB sends to described UE and stops DCI, the semi-persistent resource of described UE is distributed in release, and gives described spatial load forecasting user by the Resourse Distribute of release;
When after the described spatial load forecasting user end of transmission, described semi-persistent resource is distributed to described UE by eNodeB again.
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| CN111954189B (en) * | 2014-07-24 | 2023-12-22 | 北京三星通信技术研究有限公司 | D2D discovery signal sending method and device in LTE network |
| CN106255210B (en) * | 2015-06-12 | 2021-06-18 | 华硕电脑股份有限公司 | Method and apparatus for using configuration resources in wireless communication system |
| CN106941726B (en) * | 2016-01-04 | 2021-05-04 | 中国移动通信集团公司 | Information acquisition method and equipment |
| CN114301750B (en) * | 2017-03-24 | 2024-04-09 | 华为技术有限公司 | Time information determining method, network node and terminal equipment |
| CN111867115B (en) * | 2019-04-30 | 2022-04-26 | 大唐移动通信设备有限公司 | Semi-persistent scheduling method, device, equipment and storage medium |
| CN117643096A (en) * | 2022-06-29 | 2024-03-01 | 北京小米移动软件有限公司 | Data transmission method and device, communication equipment and storage medium |
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| WO2010068770A1 (en) * | 2008-12-12 | 2010-06-17 | Research In Motion Limited | Uplink semi-persistent scheduling explicit release acknowledgement transmission |
| CN101835271A (en) * | 2009-03-12 | 2010-09-15 | 华为技术有限公司 | Resource releasing and allocating method, device and network apparatus |
| CN102026410A (en) * | 2010-12-21 | 2011-04-20 | 中兴通讯股份有限公司 | Method and system for releasing semi-persistent scheduling (SPS) service resources |
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| WO2010068770A1 (en) * | 2008-12-12 | 2010-06-17 | Research In Motion Limited | Uplink semi-persistent scheduling explicit release acknowledgement transmission |
| CN101835271A (en) * | 2009-03-12 | 2010-09-15 | 华为技术有限公司 | Resource releasing and allocating method, device and network apparatus |
| CN102026410A (en) * | 2010-12-21 | 2011-04-20 | 中兴通讯股份有限公司 | Method and system for releasing semi-persistent scheduling (SPS) service resources |
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