CN1980456A - Resource seizing method of WCDMA system - Google Patents
Resource seizing method of WCDMA system Download PDFInfo
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- CN1980456A CN1980456A CNA2005101258967A CN200510125896A CN1980456A CN 1980456 A CN1980456 A CN 1980456A CN A2005101258967 A CNA2005101258967 A CN A2005101258967A CN 200510125896 A CN200510125896 A CN 200510125896A CN 1980456 A CN1980456 A CN 1980456A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 238000013468 resource allocation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 108010003272 Hyaluronate lyase Proteins 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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Abstract
This method builds respectively (1) a seized RAB candidate set fulfilling resource seizing priority condition, (2) a seized RAB candidate set releasing the limited user number, (3) a seized UE candidate set releasing the limited down-going code resource. If there is only one jam factor, a seized UE or RAB is selected depending on the jam factor. If there are simultaneously several jam factors, a seized UE or RAB is first selected depending on the hard jam factor to release the hard jam. Then, this method judges that if the soft jam is also released after the resource of UE or RAB is seized. If it is, the seizing resource procedure completes. If it is not, other UE or RAB is selected to release the soft jam. Under the condition of cell jam, this invention realizes that the hi-priority users seizes the limited resource with the min number of seized users and the min influence on system stability.
Description
Technical field
The present invention relates to the method for a kind of resource race to control in Wideband Code Division Multiple Access (WCDMA) (WCDMA) mobile communication system.
Background technology
In the WCDMA system, the capacity of system is limited.When system loading during near the power system capacity limit, new call request will be owing to there not being enough Radio Resources can't connecting system, promptly occur congested.In the WCDMA system, different user has different priority of resource allocation, and the user of high priority can the priority allocation resource.Under the situation of system congestion, the user of high priority can seize the Radio Resource of low priority user, and the calling that is about to low priority user discharges, and discharges the Radio Resource that it takies, so that insert the calling of high-priority users.
The call setup flow process as shown in Figure 1 in the WCDMA system.Core net (CN) sends RAB (RAB) to radio network controller (RNC) and sets up request message, and request RNC sets up a business for certain user.After RNC receives request, according to the type of service and the Qos parameter of request, for it distributes the Radio Resource that needs.If the resource allocation success, RNC sends radio bearer to subscriber equipment (UE) and sets up message, comprises the wireless parameter configuration in the message.UE according to the parameter configuration in the message good after, send radio bearer to RNC and set up and finish, RNC sends RAB to CN again and sets up and finish.
The process of RNC distributing radio resource as shown in Figure 2.RNC at first carries out access control after receiving the RAB request of setting up, and whether judge currently has enough Radio Resources to be used to distribute to newly-built business.If the result of access judgement for inserting, then be the Radio Resource that new traffic assignments needs, and the continuation business is set up process.Otherwise whether the calling that needs to judge request can carry out resource race to control, if can, then initiate the resource race to control process, the user of the low priority of calling has been set up in selection, discharges the Radio Resource that they take, and then the resource allocation of these releases is given the user of high priority.If the ability of resource race to control is not carried out in the calling of request, perhaps resource race to control failure, then this call setup failure.
Resource race to control is to carry out according to user's priority.User's precedence information brings RNC by CN in the RAB assignment messages, precedence information comprises following several sections content:
| Priority attribute | Value |
| ＞priority | 1...14 1 priority is the highest, 14 priority are minimum |
| ＞seize attribute | Can seize, can not seize |
| ＞quilt is seized attribute | Can be seized, can not be seized |
RNC determines according to precedence information whether a RAB can seize the resource of other RAB, and perhaps whether the resource of a RAB can be seized by other RAB, and principle is as follows:
If ● a RAB seizes attribute for seizing, and then this RAB can seize the resource of other RAB, otherwise can not seize the resource of other RAB.
If ● the quilt of a RAB is seized attribute for being seized, and then the resource of this RAB can be seized by other RAB, otherwise can not be seized by other RAB.
● the condition of initiating resource race to control is:
The RAB that the √ initiation is seized seizes attribute for seizing;
The quilt of the RAB that √ is seized is seized attribute for being seized;
The priority of the RAB that the √ initiation is seized is higher than the priority of being seized RAB.
In the WCDMA system, to call out the reason that gets clogged and be divided into hard obstruction or soft block, the hard obstruction comprises that downgoing channelized codes is resource-constrained, and number of users is limited, and soft block comprises that uplink interference is limited, and descending power is limited.When carrying out resource race to control, should be according to the obstruction reason and the business characteristic that get clogged and call out, the UE or the RAB that select suitable quilt to seize make when satisfying the resource request of high-priority users, make the UE or the RAB that are seized minimum as far as possible, promptly keep existing subscriber's service quality as far as possible.Above-mentioned number of users is limited to be meant: the maximum number of user restriction of this kind type of service of having set when the number of users of the type of service of the RAB of request has reached the network planning, can not insert the new user who asks this kind type of service again.
In disclosed domestic and international patent, publication number is that the Chinese patent of CN1538767 " is realized the method and apparatus of resource race to control " and provided a kind of method of carrying out resource race to control according to Radio Link priority according to the priority of Radio Link, the method that this patent provides just judges whether to carry out resource race to control simply according to priority, does not provide method how to select to be seized the user.The patent No. is that 6131029 United States Patent (USP) Method and apparatus for allocating a radioresource by preemption in a cellular radio system for communication with mobiles provides a kind of method of carrying out resource race to control when switching in the minizone, does not equally also provide the UE that seized or the method for RAB how selected.
Summary of the invention
The present invention provides a kind of method of carrying out resource race to control when small area jam according to User Priority and different congestion causes, makes that when satisfying the high-priority users resource requirement, affected user is minimum, to the stability influence minimum of system.
Basic thought of the present invention is: when carrying out resource race to control, make user's number of being seized few as far as possible.If have only a kind of obstruction reason, then direct UE or the RAB that is seized according to this obstruction reason selection; If multiple obstruction reason is arranged simultaneously, then at first select the UE or the RAB that are seized according to hard reason of blocking, make and can remove hard obstruction after the resource of seizing these UE or RAB; Whether can remove soft block simultaneously after judging the resource seize these UE or RAB then, if, ending resource preemption processes then, otherwise select again other UE or RAB to remove soft block.When UE that selects to be seized or RAB,, choose successively according to priority order from low to high according to UE that is seized or the priority of RAB.A UE can set up one or more RAB.When carrying out resource race to control, can seize one or more RAB of a UE.In the following description, if must seize all RAB of a UE, this situation is called seizes UE; For other situation, be called and seize RAB.
Resource seizing method in a kind of WCDMA of the present invention system, it comprises the steps:
1) makes up the RAB RAB candidate collection that the quilt satisfy the resource race to control priority conditions is seized;
2) structure can be removed the RAB RAB candidate collection that the limited quilt of number of users is seized;
3) structure can be removed the user equipment (UE) candidate collection that the resource-constrained quilt of descending sign indicating number is seized;
4) if individual consumer's number is limited, from step 2) the result select the minimum RAB RAB of priority as the RAB that is seized;
5), from the result of step 3), select one or one group of UE that the minimum user equipment (UE) of priority is seized as quilt if the independent descending sign indicating number is resource-constrained; Wherein, the priority of a UE is the highest pairing priority of RAB of all RAB medium priorities of this UE; The priority of one group of UE is for having the pairing priority of UE of limit priority among this group UE;
6) if number of users is limited, simultaneously descending sign indicating number resource is also limited, from step 2) and the result's of step 3) common factor selection one or one group of user equipment (UE) of being seized; If do not occur simultaneously, then select a RAB RAB according to step 4), select one or one group of user equipment (UE) according to step 5) again;
7) if independent soft block (uplink interference is limited or descending power is limited), with the candidate RAB among the result of step 1) according to speed order from high to low, speed identical again according to priority rank order from low to high; Select to come a top RAB RAB then, whether judgement can remove soft block after discharging this RAB, if then this RAB is candidate's RAB; Otherwise, select RAB successively and judge that till can removing soft block, last result is a plurality of candidate RAB according to ranking results;
8) if hard simultaneously the obstruction and soft block, then select to remove the user equipment (UE) or the RAB RAB of hard obstruction earlier to step 6) according to step 4), whether simultaneously can remove soft block after judging these user equipment (UE)s of release or RAB RAB then, if then finish to select; Otherwise, select other RABs RAB according to step 7) again, till removing soft block.
In the said method, step 1) specifically: in the existing calling party in sub-district, find out all RAB that satisfy the preempting priority condition, promptly seize attribute for seizing and priority is lower than the priority of the RAB that calls out of getting clogged.
In the said method, step 2) specifically: from the result of step 1), select type of service and the identical RAB RAB of RAB type of service that gets clogged and call out.
In the said method, step 3) is specifically: the candidate UE that at first selects to satisfy following condition: all RAB of this UE are in the result of step 1), and the speed of the downgoing channelized codes that takies of this UE is more than or equal to the speed of the desired channel code of calling that gets clogged simultaneously; If do not satisfy the UE of above-mentioned condition, the one group of UE that then selects to satisfy following condition is as candidate UE: all RAB of these UE are in the result of step 1), all RAB that discharge these UE simultaneously later can go out a channel code free time, and the speed of this channel code is more than or equal to the speed of the desired channel code of calling that gets clogged.
Adopt the method for the invention, can under the condition of small area jam, realize the resource race to control of high-priority users to low priority user, the number of users that the quilt that relates to is simultaneously seized is minimum, to the stability influence minimum of system, is a kind of resource seizing method of relatively optimizing.
Description of drawings
Fig. 1 is that RAB sets up the process schematic diagram in the WCDMA system;
Fig. 2 is a RNC Resources allocation process schematic diagram;
Fig. 3 is the resource race to control schematic flow sheet.
Embodiment
Below in conjunction with a specific embodiment, method of the present invention is described further.
In the present embodiment, need the parameter of input as follows:
Congestion cause comprises: downgoing channelized codes is resource-constrained, and up number of users is limited, and the downlink user number is limited, and uplink interference is limited, and descending power is limited.
Descending spreading factor by congested user's request is SF_DL.
The uplink service type of requested service is UlServType.
The downlink business type of requested service is DlServType.
Concrete steps of the present invention are as follows:
1. set up set A, all seize attribute for seizing and priority is lower than the RAB} of requested service priority in the A={ sub-district; If A is empty, returns and seize failure.
2. if descending sign indicating number is resource-constrained, set up set B, set B is constructed as follows:
2.1. select to satisfy the UE of following condition: all RAB of this UE satisfy priority conditions, and promptly all RAB of this UE belong to set A;
2.2. in 2.1 result, SF is directly put into set B smaller or equal to the UE of SF_DL;
2.3. in 2.1 result, for the UE of SF greater than SF_DL, if there are a plurality of UE to take a SF fully smaller or equal to the subcode of SF_DL tree, can vacate the channel code of a SF after promptly discharging the sign indicating number resource of these UE smaller or equal to SF_DL, then these UE are put into set B as 1 element;
2.4. if set B is empty, returns and seize failure.
3. if up number of users is limited, set up set C, the uplink service type equals the RAB} of UlServType among the C={A; If C is empty, returns and seize failure.
4. if the downlink user number is limited, set up set D, the downlink business type equals the RAB} of DlServType among the D={A; If D is empty, returns and seize failure.
5. the situation limited according to resource-constrained, the up number of users of sign indicating number, that the downlink user number is limited is selected the element among set B, C, the D:
5.1. if sign indicating number is resource-constrained separately, select to have only 1 UE and the minimum element of priority among the B, if there is not such element, select the minimum element of UE number;
5.2. if independent up number of users is limited, select the minimum RAB of C medium priority;
5.3. if the independent descending number of users is limited, select the minimum RAB of D medium priority;
5.4. if up number of users is limited and the downlink user number is limited, select to belong to same UE and the minimum RAB of priority among C, the D; If there is not such RAB, then choose according to the principle of 5.2. and 5.3 respectively;
5.5. if up number of users is limited, or (with) the downlink user number is limited, simultaneously descending sign indicating number is resource-constrained, selects to belong to a UE together among B, C, the D, and the minimum RAB of priority; If there is not such RAB, then select according to the principle of 5.1,5.2,5.3 (or 5.4) respectively.
6., select to seize the tactful as follows of RAB if uplink interference is limited:
If, promptly do not have other limited situation 6.1. do not pass through step 5, from A, select a RAB, judge whether the uplink interference behind this RAB of release satisfies the access conditions of blocked call, if satisfy condition, then this RAB puts into set F;
6.1.1. if F is not empty, the RAB that from F, selects a minimum RAB conduct of priority to seize;
6.1.2. if F is empty, then the RAB that speed is the highest from A begins, and according to service rate order from high to low, whether the uplink interference behind this RAB of judgement release satisfies the access conditions of newly-built RAB successively, till satisfying condition, at this moment selecteed RAB is exactly the RAB that is seized; If all RAB handle among the A, still can't meet the demands, then return and seize failure;
If 6.2. through step 5, judge at first then whether the uplink interference behind the release steps 5 selected RAB satisfies the access conditions of new business, if satisfy, then the result of step 5 is final result; Otherwise, according to
6.1.2 step, the RAB that selection is seized in the surplus element from A, last selection result is that the result of step 5 adds the RAB that selects in this step; If all RAB handle among the A, still can't meet the demands, then return and seize failure.
7., select to seize the tactful as follows of RAB if descending power is limited:
If, promptly do not have other limited situation 7.1. do not pass through step 5 and step 6, from A, select a RAB, judge whether the descending power behind this RAB of release satisfies the access conditions of new business, if satisfy, then this RAB puts into set G;
7.1.1. if G is not empty, the RAB that from G, selects a minimum RAB conduct of priority to seize;
7.1.2. if G is empty, then the RAB that speed is the highest from A begins, and according to service rate order from high to low, whether the descending power behind this RAB of judgement release satisfies the access conditions of new business successively, end up to descending being not limited as, at this moment selecteed RAB is exactly the RAB that is seized; If all RAB handle among the A, still can't meet the demands, then return and seize failure;
If 7.2., judge at first then whether the descending power behind the selected RAB of release steps 5 and step 6 satisfies the access conditions of new business, if satisfy, then the result of step 5 and step 6 is final selection result through step 5 or step 6; Otherwise, according to the principle of step 7.1.2, the RAB that selection is seized in the surplus element from A, last selection result is that the result of step 6 adds the RAB that selects in this step; If all RAB handle among the A, still can't meet the demands, then return and seize failure.
8. return and seized professional user ID and service identification.
Claims (4)
1, the resource seizing method in a kind of WCDMA system is characterized in that it comprises the steps:
1) makes up the RAB candidate collection that the quilt satisfy the resource race to control priority conditions is seized;
2) structure can be removed the RAB candidate collection that the limited quilt of number of users is seized;
3) structure can be removed the subscriber equipment candidate collection that the resource-constrained quilt of descending sign indicating number is seized;
4) if individual consumer's number is limited, from step 2) the result select the minimum RAB of priority as the RAB of being seized;
5), from the result of step 3), select one or one group of subscriber equipment that the minimum subscriber equipment of priority is seized as quilt if the independent descending sign indicating number is resource-constrained;
6) if number of users is limited, simultaneously descending sign indicating number resource is also limited, from step 2) and the result's of step 3) common factor selection one or one group of subscriber equipment of being seized; If do not occur simultaneously, then select a RAB according to step 4), select one or one group of subscriber equipment according to step 5) again;
7) if independent soft block, with the candidate's RAB among the result of step 1) according to speed order from high to low, speed identical again according to priority rank order from low to high; Select then to come top one, whether judgement can remove soft block after discharging this RAB, if then this RAB is candidate's a RAB; Otherwise, select RAB successively and judge that till can removing soft block, last result is a plurality of candidate's RABs according to ranking results;
8) if hard simultaneously the obstruction and soft block, then select to remove the subscriber equipment or the RAB of hard obstruction earlier to step 6) according to step 4), whether simultaneously can remove soft block after judging these subscriber equipmenies of release or RAB then, if then finish to select; Otherwise, select other RABs according to step 7) again, till removing soft block.
2, the resource seizing method in the WCDMA according to claim 1 system, it is characterized in that, step 1) is specifically: in the existing calling party in sub-district, find out all RABs that satisfy the preempting priority condition, promptly seize attribute for seizing and priority is lower than the priority of the RAB called out of getting clogged.
3, the resource seizing method in the WCDMA according to claim 1 system is characterized in that step 2) specifically: the identical RAB of RAB type of service of from the result of step 1), selecting type of service and the calling that gets clogged.
4, the resource seizing method in the WCDMA according to claim 1 system, it is characterized in that, step 3) is specifically: the candidate user devices of at first selecting to satisfy following condition: all RABs of this subscriber equipment are all in the result of step 1), and the speed of the downgoing channelized codes that takies of this subscriber equipment is more than or equal to the speed of the desired channel code of calling that gets clogged simultaneously; If do not satisfy the subscriber equipment of above-mentioned condition, one group of subscriber equipment then selecting to satisfy following condition is as candidate user devices: all RABs of these subscriber equipmenies are all in the result of step 1), all RABs that discharge these subscriber equipmenies simultaneously later can go out a channel code free time, and the speed of this channel code is more than or equal to the speed of the desired channel code of calling that gets clogged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101258967A CN100450301C (en) | 2005-12-02 | 2005-12-02 | Resource seizing method of WCDMA system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101258967A CN100450301C (en) | 2005-12-02 | 2005-12-02 | Resource seizing method of WCDMA system |
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| Publication Number | Publication Date |
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| CN1980456A true CN1980456A (en) | 2007-06-13 |
| CN100450301C CN100450301C (en) | 2009-01-07 |
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| CNB2005101258967A Expired - Fee Related CN100450301C (en) | 2005-12-02 | 2005-12-02 | Resource seizing method of WCDMA system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101146366B (en) * | 2007-10-15 | 2010-06-09 | 华为技术有限公司 | Call seizing method, device, base station controller and radio network controller |
| CN102223668A (en) * | 2010-04-15 | 2011-10-19 | 中兴通讯股份有限公司 | Resource seizing method for long term evolution (LTE) system during service congestion |
| CN102281631A (en) * | 2010-06-12 | 2011-12-14 | 普天信息技术研究院有限公司 | Cell blockage and blockage-releasing methods |
| CN107911849A (en) * | 2017-10-19 | 2018-04-13 | 南京熊猫电子股份有限公司 | A kind of access method for pre-emptively in LTE system acceptance controlling decision |
| CN112788541A (en) * | 2019-11-07 | 2021-05-11 | 成都鼎桥通信技术有限公司 | Unicast complementary construction method and device for 3GPP multicast scene |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ID29056A (en) * | 1998-08-20 | 2001-07-26 | Qualcomm Inc | SYSTEM AND METHOD FOR CHANNELING THE PRIORITY ACCESS TO A CELLULAR PHONE SYSTEM |
| CN1108075C (en) * | 1999-09-24 | 2003-05-07 | 华为技术有限公司 | Dynamic distribution method for wireless channels |
| US20030072260A1 (en) * | 2000-10-06 | 2003-04-17 | Janoska Mark William | Multi-dimensional buffer management hierarchy |
| CN1291612C (en) * | 2003-10-24 | 2006-12-20 | 大唐移动通信设备有限公司 | Method and device for realizing resource seizing based on priority of radio link |
-
2005
- 2005-12-02 CN CNB2005101258967A patent/CN100450301C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101146366B (en) * | 2007-10-15 | 2010-06-09 | 华为技术有限公司 | Call seizing method, device, base station controller and radio network controller |
| CN102223668A (en) * | 2010-04-15 | 2011-10-19 | 中兴通讯股份有限公司 | Resource seizing method for long term evolution (LTE) system during service congestion |
| CN102223668B (en) * | 2010-04-15 | 2014-07-02 | 中兴通讯股份有限公司 | Resource seizing method for long term evolution (LTE) system during service congestion |
| CN102281631A (en) * | 2010-06-12 | 2011-12-14 | 普天信息技术研究院有限公司 | Cell blockage and blockage-releasing methods |
| CN102281631B (en) * | 2010-06-12 | 2014-03-26 | 普天信息技术研究院有限公司 | Cell blockage and blockage-releasing methods |
| CN107911849A (en) * | 2017-10-19 | 2018-04-13 | 南京熊猫电子股份有限公司 | A kind of access method for pre-emptively in LTE system acceptance controlling decision |
| CN107911849B (en) * | 2017-10-19 | 2021-01-15 | 南京熊猫电子股份有限公司 | Access preemption method in admission control judgment of LTE (Long term evolution) system |
| CN112788541A (en) * | 2019-11-07 | 2021-05-11 | 成都鼎桥通信技术有限公司 | Unicast complementary construction method and device for 3GPP multicast scene |
| CN112788541B (en) * | 2019-11-07 | 2022-06-07 | 成都鼎桥通信技术有限公司 | Unicast complementary construction method and device for 3GPP multicast scene |
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| Publication number | Publication date |
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| CN100450301C (en) | 2009-01-07 |
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