CN101272542A - HSDPA scheduling method in communication system - Google Patents
HSDPA scheduling method in communication system Download PDFInfo
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- CN101272542A CN101272542A CNA2008100969170A CN200810096917A CN101272542A CN 101272542 A CN101272542 A CN 101272542A CN A2008100969170 A CNA2008100969170 A CN A2008100969170A CN 200810096917 A CN200810096917 A CN 200810096917A CN 101272542 A CN101272542 A CN 101272542A
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Abstract
The invention provides a scheduling method in a communication system HSDPA which includes the steps: the number of present priority queues waiting to be scheduled is not more than the number of high-speed shared control channels in a present district; the priority weighting which is corresponding to every priority queue is determined according to the priority scheduling indication of the present priority queues waiting to be schedule; and the code channel and the power of high-speed downlink shared channels in the district to which the priority queue belongs are allocated according to the channel quality indication, the priority weighting and user equipment capacity grades which are reported by the user equipment to which the priority queue belongs. The scheduling method in the communication system HSDPA improves the utilization ratio of the resources in the district.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of in communication system the dispatching method of HSDPA.
Background technology
High speed downlink packet inserts (HSDPA, High Speed Downlink PacketAccess) two basic functions are Adaptive Modulation and Coding and mix automatic repeat requests function replacement WCDMA (Wideband Code Division Multiple Access, the Wideband Code Division Multiple Access (WCDMA) access) two basic functions---variable bandspread factor and fast power control, the HSDPA system has used short time transmission intercal and fast packet scheduling further to shorten propagation delay time in addition.Because HSDPA introduces two descending shared channels---high speed descending sharing channel (HS-DSCH, High Speed Downlink Shared Channel) and High-Speed Shared Control Channel (HS-SCCH, High Speed Shared Control Channel), so need suitable packet scheduling algorithm to decide a certain moment to dispatch which user and corresponding use code channel number and selected transmission block size.
In realizing process of the present invention, the inventor finds that the packet scheduling algorithm of prior art is reasonable inadequately, causes in the sub-district utilization of HS-DSCH code channel and HS-DSCH power resource abundant inadequately.For example: the subscriber equipment under certain priority query does not need whole resources of being distributed, and the part resource does not need to utilize, but the subscriber equipment under other priority query but can not utilize this part resource.
Summary of the invention
The present invention aim to provide a kind of in communication system the dispatching method of HSDPA, to solve HS-DSCH code channel and the sufficient inadequately problem of the utilization of HS-DSCH power resource in the sub-district.
In an embodiment of the present invention, provide a kind of in communication system the dispatching method of HSDPA, comprise the steps: to make the current number of dispatching priority formation for the treatment of to be not more than HS-SCCH number in the current area; According to the current pairing priority weighting of definite each priority query of dispatching priority indication for the treatment of the dispatching priority formation; And the code channel and the power that distribute the HS-DSCH of priority query's affiliated subdistrict according to the channel quality indication that subscriber equipment reported under the priority query, priority weighting and UE capability level.
Preferably, currently treat that the dispatching priority formation disposed the assurance bit rate, currently treat that the subscriber equipment number is not more than in the current area in the dispatching priority formation and also comprise before the HS-SCCH number making: the assurance bit rate according to configuration calculates the minimum transfer block size of the required scheduling of each subframe; According to indication of the channel quality that subscriber equipment reported under the priority query and minimum transfer block size, calculate code channel and the power of required HS-DSCH; According to the code channel of the required HS-DSCH that calculates and code channel and the power of the first sub-distribution sub-district HS-DSCH of power, code channel and the power of sub-district residue HS-DSCH after the record sub-distribution just simultaneously; The UE capability level is distributed code channel and the power of priority query's affiliated subdistrict through the HS-DSCH after the first sub-distribution under according to channel quality indication, priority weighting and priority query that subscriber equipment reported under the priority query: the code channel of the employed HS-DSCH of Priority Queuing and power are the code channel of sub-distribution just and power and the code channel and the power sum of being distributed.
Preferably, the HSDPA dispatching method also comprises: if treat that user device quantity is greater than HS-SCCH number in the sub-district in the formation of dispatching priority formation medium priority, then from treat the dispatching priority formation, choose the subscriber equipment that is arranged in the front, make selected subscriber equipment number equal HS-SCCH number in the sub-district.
Preferably, choosing the data stacking amount is not that 0 priority query joins and treats the dispatching priority formation.
Preferably, the dispatching priority indication is obtained according to concrete professional the appointment by core net.
Preferably, this HSDPA dispatching method also comprises: determine the selected transmission block size of scheduling according to the channel quality that code channel and power and subscriber equipment the reported indication for the treatment of the HS-DSCH that priority query distributed in the dispatching priority formation.
Preferably, this HSDPA dispatching method also comprises: travel through from treat the dispatching priority formation, seek the data stacking amount of the selected transmission block of corresponding priority level formation greater than this priority query.
Preferably, this HSDPA dispatching method also comprises: if do not find, use selected transmission block size to dispatch.
Preferably, this HSDPA dispatching method also comprises: if find, then adjust the selected transmission block size of respective priority formation that finds, make the transmission block size be not less than the expense that data stacking amount under the current priority formation adds the MACHS-PDU head, code channel and the power of the record HS-DSCH that uses upgrade code channel and power that the sub-district remains HS-DSCH.
Preferably, this HSDPA dispatching method also comprises: begin to calculate from the next priority query of the priority query that finds, code channel and power according to the HS-DSCH code channel that distributes and power and sub-district residue HS-DSCH, reselect transmission block, if select transmission block greater than the data stacking amount under the priority query, then reduce to select the transmission block size, write down code channel and the power of used HS-DSCH, and the code channel and the power that upgrade sub-district residue HS-DSCH, transmission block is reselected in the corresponding priority level formation of not reselecting transmission block in the formation of remaining dispatching priority again.
Above embodiment is because adopt packet scheduling algorithm and corresponding selection transmission block size and code channel number, thus overcome the sufficient inadequately problem of utilization of HS-DSCH code channel and HS-DSCH power resource sub-district the in, and then improved the utilance of local resource.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the flow chart of HSDPA dispatching method in communication system according to the embodiment of the invention;
Fig. 2 shows the flow chart for the treatment of not dispose in the dispatching priority formation GBR Que dispatching method according to the embodiment of the invention;
Fig. 3 shows the flow chart for the treatment of to have in the dispatching priority formation configuration GBR Que dispatching method according to the embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 shows the flow chart of HSDPA dispatching method in communication system according to the embodiment of the invention, may further comprise the steps:
Step S10 makes the current number of dispatching priority formation for the treatment of be not more than HS-SCCH number in the current area;
Step S20 is according to the current pairing priority weighting of definite each priority query of dispatching priority indication for the treatment of the dispatching priority formation; And
Step S30 distributes code channel and the power of the HS-DSCH of priority query's affiliated subdistrict according to the channel quality indication that subscriber equipment reported under the priority query, priority weighting and UE capability level.
This embodiment is because adopt packet scheduling algorithm and corresponding selection transmission block size and code channel number, thus overcome the sufficient inadequately problem of utilization of HS-DSCH code channel and HS-DSCH power resource sub-district the in, and then improved the utilance of local resource.
Preferably, currently treat that the dispatching priority formation disposed the assurance bit rate, also comprised before step S10: the assurance bit rate according to configuration calculates the minimum transfer block size of the required scheduling of each subframe; According to indication of the channel quality that subscriber equipment reported under the priority query and minimum transfer block size, calculate code channel and the power of required HS-DSCH; According to the code channel of the required HS-DSCH that calculates and code channel and the power of the first sub-distribution sub-district HS-DSCH of power, code channel and the power of sub-district residue HS-DSCH after the record sub-distribution just simultaneously; Also comprise after step S30: the code channel of the employed HS-DSCH of Priority Queuing and power are code channel and the power sums that code channel and the power and the step S30 of sub-distribution just distributed.
Preferably, this HSDPA dispatching method also comprises: if treat that user device quantity is greater than HS-SCCH number in the sub-district in the formation of dispatching priority formation medium priority, then from treat the dispatching priority formation, choose the subscriber equipment that is arranged in the front, make selected subscriber equipment number equal HS-SCCH number in the sub-district.
Preferably, choosing the data stacking amount is not that 0 priority query joins and treats the dispatching priority formation.
Preferably, the dispatching priority indication is obtained according to concrete professional the appointment by core net.
Preferably, this HSDPA dispatching method also comprises: determine the selected transmission block size of scheduling according to the channel quality that code channel and power and subscriber equipment the reported indication for the treatment of the HS-DSCH that priority query distributed in the dispatching priority formation.
Preferably, this HSDPA dispatching method also comprises: travel through from treat the dispatching priority formation, seek the data stacking amount of the selected transmission block of corresponding priority level formation greater than this priority query.If do not find, use selected transmission block size to dispatch.If find, then adjust the selected transmission block size of respective priority formation that finds, make the transmission block size be not less than the expense that data stacking amount under the current priority formation adds the MACHS-PDU head, code channel and the power of the record HS-DSCH that uses upgrade code channel and power that the sub-district remains HS-DSCH.Begin to calculate from the next priority query of the priority query that finds, code channel and power according to the HS-DSCH code channel that distributes and power and sub-district residue HS-DSCH, reselect transmission block, if select transmission block greater than the data stacking amount under the priority query, then reduce to select the transmission block size, write down code channel and the power of used HS-DSCH, and the code channel and the power that upgrade sub-district residue HS-DSCH, transmission block is reselected in the corresponding priority level formation of not reselecting transmission block in the formation of remaining dispatching priority again.
Fig. 2 shows the flow chart for the treatment of not dispose in the dispatching priority formation GBR Que dispatching method according to the embodiment of the invention, and it is that proportional fair dispatching method HSDPA scheduling processing method is as follows that dispatching algorithm is worked as in this embodiment description:
Step S202: with the data stacking amount is not that 0 priority query puts into the current dispatching priority formation for the treatment of, compare subscriber equipment (User Equipment in the priority query, UE) if whether number be not more than, jumps to step S206 greater than HS-SCCH number in the current area;
Step S204: if treat that dispatching priority formation medium priority number of queues is greater than HS-SCCH number in the sub-district, redefine and treat the dispatching priority formation: only get and treat that the front is several in the dispatching priority formation, make and treat that dispatching priority formation medium priority formation number equals HS-SCCH number in the sub-district;
Step S206: carry out preassignment for HS-DSCH power and code channel in the sub-district, distribution principle is as follows:
At first, according to the current dispatching priority indication for the treatment of Queue in the dispatching priority formation (priority query) (Scheduling Priority Indicator, according to concrete business, core net is assigned and), determine corresponding weight;
Secondly, according to treating UE reporting channel quality indication (the Channel Quality Indictor under the Queue in the dispatching priority row, CQI) distribute the HS-DSCH code channel and the power of affiliated subdistrict with determining to treat in the dispatching priority formation UE capability level under each Queue corresponding priority weighting of institute and this priority query before;
Step S208: according to treating that Queue distributes the HS-DSCH code channel in the dispatching priority formation, power and affiliated UE report CQI determine dispatching office select the transmission block size (Transport Block Size, TBSize);
Step S210: travel through to tail from treating priority query's head, find the selected transmission block size of corresponding Queue greater than its data stacking amount, as not finding, directly with before select the transmission block size to dispatch, otherwise carry out step S212;
Step S212: S210 finds Queue for step, adjust selected transmission block size, make the transmission block size be not less than that the data stacking amount adds the MACHSPDU expense under the current priority formation, record HS-DSCH code channel number and the power of using simultaneously, the renewal sub-district remains HS-DSCH code channel and power;
Step S214: found the next Queue of Queue to begin to calculate from step S212, utilize original HS-DSCH code channel and the power of distributing to add sub-district residue HS-DSCH code channel and power, reselect transmission block, if select transmission block greater than data stacking amount under this Queue, need reduce selected transmission block size, final entry this time dispatching office is selected HS-DSCH code channel and power for use, and sub-district residue HS-DSCH code channel and power, treat that with whole Queue reselects (step S212 finds except the data stacking quantity not sufficient Queue) one time in the dispatching priority formation always.
This embodiment is because adopt packet scheduling algorithm and corresponding selection transmission block size and code channel number, thus overcome the sufficient inadequately problem of utilization of HS-DSCH code channel and HS-DSCH power resource sub-district the in, and then improved the utilance of local resource.
Fig. 3 shows the flow chart for the treatment of to have in the dispatching priority formation configuration GBR Que dispatching method according to the embodiment of the invention, guarantee speed (Guaranteed BitRate about configuration, GBR) time, the HSDPA scheduling processing method is as follows when dispatching algorithm is the Proportional Fair algorithm:
Step S302: with the data stacking amount is not that 0 priority query puts into the current dispatching priority formation for the treatment of, relatively user device quantity HS-SCCH number in the current area whether in the priority query if be not more than, jumps to step S306;
Step S304: if treat that dispatching priority formation medium priority number of queues is greater than HS-SCCH number in the sub-district, redefine and treat the dispatching priority formation: only get and treat that the front is several in the dispatching priority formation, make and treat that dispatching priority formation medium priority formation number equals HS-SCCH number in the sub-district;
Step S306: carry out preassignment for HS-DSCH power and code channel in the sub-district, distribution principle is as follows:
At first, carry out just sub-distribution sub-district HS-DSCH code channel and power for the Queue that treats all configuration GBR business in the dispatching priority formation:, be converted to each subframe (2ms just) required minimum transfer block size (GBR/500) according to configuration GBR; Report CQI and the required selection minimum transfer of each subframe block size to calculate required HS-DSCH code channel and power according to UE under the professional Queue of each configuration GBR.Carry out HS-DSCH code channel and power in the first sub-distribution sub-district according to calculating required HS-DSCH power and code channel, last recording cell residue HS-DSCH code channel and power;
Secondly, according to treating that the UE reporting channel quality under the Queue is indicated (hereinafter to be referred as CQI) and determined before to treat that the corresponding priority weighting of each Queue distributes affiliated subdistrict through residue HS-DSCH code channel and power after the first sub-distribution once more in the dispatching priority formation in the dispatching priority row; To distribute HS-DSCH code channel and power be sub-distribution just and distribute code channel once more and the power sum for the Queue that treats in the dispatching priority formation configuration GBR, and for configuration GBR be 0 or the Queue distribution HS-DSCH code channel and the power that do not dispose GBR just distribute code channel and power once more;
Step S308: according to treating that Queue distributes the HS-DSCH code channel in the dispatching priority formation, power and affiliated UE report CQI to determine dispatching office selection transmission block size;
Step S310: travel through to tail from treating priority query's head, find the selected transmission block size of corresponding Queue greater than its data stacking amount, as not finding, directly with before select the transmission block size to dispatch, otherwise carry out step S312;
Step S312: S310 finds Queue for step, adjust selected transmission block size, make the transmission block size be not less than that the data stacking amount adds the MACHSPDU expense under the current priority formation, record HS-DSCH code channel number and the power of using simultaneously, the renewal sub-district remains HS-DSCH code channel and power;
Step S314: found the next Queue of Queue to begin to calculate from step S312, utilize original HS-DSCH code channel and the power of distributing to add sub-district residue HS-DSCH code channel and power, reselect transmission block, if select transmission block greater than data stacking amount under this Queue, need reduce selected transmission block size, final entry used HS-DSCH code channel this moment and power, and sub-district residue HS-DSCH code channel and power, treat that with whole Queue reselects transmission block once (step S312 finds except the data stacking quantity not sufficient Queue) in the dispatching priority formation always.
Adjusting selected transmission block size among step S212 and the step S314 is according to the corresponding form of the CQI that stipulates in 3GPP 25214 agreements, encloses this form below, and wherein CQI is meant channel quality indication, the UE ability level that different table is corresponding different.
The CQI mapping table of UE ability level 1 to 6
UE ability level 7 and 8 CQI mapping table
The CQI mapping table of UE ability level 9
The CQI mapping table of UE ability level 10.
UE ability level 11 and 12 CQI mapping table
This embodiment is because adopt packet scheduling algorithm and corresponding selection transmission block size and code channel number, thus overcome the sufficient inadequately problem of utilization of HS-DSCH code channel and HS-DSCH power resource sub-district the in, and then improved the utilance of local resource.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the dispatching method of a HSDPA in communication system is characterized in that, comprises the steps:
Make the current number of dispatching priority formation for the treatment of be not more than High-Speed Shared Control Channel number in the current area;
According to the described current pairing priority weighting of definite each priority query of dispatching priority indication for the treatment of the dispatching priority formation; And
The code channel and the power that distribute the high speed descending sharing channel of described priority query affiliated subdistrict according to the indication of the channel quality that subscriber equipment reported under the described priority query, described priority weighting and described UE capability level.
2. dispatching method according to claim 1 is characterized in that,
Describedly currently treat that the dispatching priority formation disposed the assurance bit rate, currently treat that the subscriber equipment number is not more than in the current area in the dispatching priority formation and also comprise before the High-Speed Shared Control Channel number making:
Described assurance bit rate according to configuration calculates the minimum transfer block size of the required scheduling of each subframe;
According to indication of the channel quality that subscriber equipment reported under the described priority query and described minimum transfer block size, calculate the code channel and the power of required high speed descending sharing channel;
According to the code channel of the described required high speed descending sharing channel that calculates and the code channel and the power of the first sub-distribution sub-district of power high speed descending sharing channel, the code channel and the power of sub-district residue high speed descending sharing channel after the record sub-distribution just simultaneously;
The UE capability level also comprises after distributing the code channel of high speed descending sharing channel of described priority query affiliated subdistrict and power under according to the channel quality that subscriber equipment reported under described priority query indication, described priority weighting and described priority query:
The code channel of the employed high speed descending sharing channel of described Priority Queuing and power are the code channel of described sub-distribution just and the code channel and the power sum of power and described distribution.
3. dispatching method according to claim 1 is characterized in that, also comprises:
If treat that user device quantity is greater than High-Speed Shared Control Channel number in the sub-district in the formation of dispatching priority formation medium priority, then choose the subscriber equipment that is arranged in the front the dispatching priority formation, make selected subscriber equipment number equal High-Speed Shared Control Channel number in the sub-district from described treating.
4. dispatching method according to claim 1 is characterized in that, chooses the data stacking amount and is not 0 priority query and join the described dispatching priority formation for the treatment of.
5. dispatching method according to claim 1 is characterized in that, described dispatching priority indication is obtained according to concrete professional the appointment by core net.
6. dispatching method according to claim 1 is characterized in that, also comprises:
According to the described selected transmission block size of the definite scheduling of the channel quality that code channel and power and described subscriber equipment reported indication for the treatment of the high speed descending sharing channel that priority query distributed in the dispatching priority formation.
7. dispatching method according to claim 6 is characterized in that, also comprises:
Travel through the dispatching priority formation from described treating, seek the data stacking amount of the selected transmission block of corresponding priority level formation greater than this priority query.
8. dispatching method according to claim 7 is characterized in that, also comprises:
If do not find, use described selected transmission block size to dispatch.
9. dispatching method according to claim 7 is characterized in that, also comprises:
If find, then adjust the selected transmission block size of described respective priority formation that finds, make described transmission block size be not less than the expense that data stacking amount under the current priority formation adds the MACHS-PDU head, the code channel and the power of the record high speed descending sharing channel that uses upgrade code channel and power that described sub-district remains high speed descending sharing channel.
10. dispatching method according to claim 9 is characterized in that, also comprises:
Begin to calculate from the next priority query of the described priority query that finds, code channel and power according to the high speed descending sharing channel code channel that distributes and power and described sub-district residue high speed descending sharing channel, reselect transmission block, if described selection transmission block is greater than the data stacking amount under the described priority query, then reduce the described transmission block size of selecting, write down the code channel and the power of used high speed descending sharing channel, and the code channel and the power that upgrade described sub-district residue high speed descending sharing channel, the corresponding priority query that does not reselect transmission block in the formation of remaining dispatching priority is reselected transmission block again.
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| CN102083221A (en) * | 2009-11-27 | 2011-06-01 | ***通信集团北京有限公司 | Resource scheduling method and device based on HSDPA (high speed downlink packet access) |
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| CN113179226B (en) * | 2021-03-31 | 2022-03-29 | 新华三信息安全技术有限公司 | Queue scheduling method and device |
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