CN102547898A - Switch optimizing method for femtocell under non-closed mode - Google Patents
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Abstract
The invention discloses a switch optimizing method for a femtocell under a non-closed mode. The method comprises the following steps: entering into a speed threshold self-learning stage after femtocell redeployment, switching and judging by adopting a preferential femtocell switching strategy which combines a differential delay Hys-qos, and issuing a switching request to a target cell with remaining resource which meets the requirements of user services. In the method provided by the invention, users' moving feature and service feature, as well as the loading condition of the cell are considered comprehensively, so that switching optimization is achieved, unnecessary repeated switching is reduced, the blocking rate of the switching is lowered, and the degree of satisfaction in user experience is improved.
Description
Technical field
The present invention relates to the mobile communication technology field, be specifically related to the sub-district switching optimization method of femtocell in the LTE system (femtocell formula base station) under non-sealing access module
Background technology
Femtocell formula base station (Femtocell) is also referred to as Home eNodeB (HeNB, Home enodeB), is the subminaturization mobile base station of complying with mobile communication development and the release of broadband trend in recent years.It is a kind of low-power wireless access point, works in the mandate frequency range, uses the IP agreement, connects through the existing ADSL of user, the wide charged road of LAN and inserts, and long-range gateway by special use is realized interconnecting from the IP network to the mobile core network.Its size is similar with ADSL Modem, has characteristics such as configuration easy for installation, automatic, automatic network planning, plug and play.Concerning operator, femtocell can practice thrift operation maintenance cost, under the prerequisite that guarantees the indoor quality of eating dishes without rice or wine, fast and effeciently improves indoor covering problem simultaneously.Concerning the user, employing femtocell means the broadband data service experience that can obtain indoor high-quality voice service and higher rate, and meanwhile the user can also enjoy cheaper rate.
Current femtocell mainly is deployed in private sites such as family, group, company and uses or be deployed in school, market, large-scale sales field as not enough effectively the replenishing of macrocellular wireless communication system covering as the dedicated resources of private user.Corresponding therewith, femtocell mainly contains three kinds of access modules: open mode, closed mode, mixed mode.Open mode allows all users to insert.Closed mode only allows to insert through the user who authorizes, like users such as kinsfolk or members of community.Mixed mode also allows all users to insert, but the user who belongs to CSG enjoys preferential or preferential condition.
Switching directly influences the performance of whole system as an important mobile management function.Be accompanied by the large scale deployment of femtocell, switching handling method has also been proposed new requirement, traditional changing method can not adapt to the new feature of femtocell.
Femtocell considers the influence of rate to user preferences for the user provides rate preferential, in handoff procedure, should pay the utmost attention to and choose femtocell as switching target small area.The tradition handoff algorithms is especially for needing adjacent cell signal quality definitely to be superior to this sub-district with the handoff algorithms under the frequency deployment scenario and having certain sluggish surplus ability trigger event to report.Yet the transmitting power of femtocell is much smaller than macrocell, and in this case, traditional handoff algorithms has can't in time trigger the preferential shortcoming of switching of femtocell.
In addition, consider the limited coverage area of femtocell, speed threshold should be set, prevent that the user of high-speed motion from switching fast back and forth between femtocell and macrocell, to reduce unnecessary overhead to optimize handoff algorithms.On the other hand, the handoff algorithms that femtocell is preferential causes a large number of users to pour in femtocell in advance and cause cell-overload easily, causes the network overall customer experience to reduce.In view of this, should fully combine the surplus resources of sub-district and user's service feature further to optimize handoff algorithms.
Summary of the invention
Goal of the invention: main purpose of the present invention is to provide a kind of femtocell preferential changing method, and this method combines user moving speed, user performance characteristic, sub-district surplus resources to adapt to the new demand of femtocell to hand-off process.
Design philosophy of the present invention is; Femtocell redeploys the back and gets into the speed threshold self study stage; Switch decision adopts the preferential switchover policy of femtocell that combines the sluggish Hys_qos of differentiation, and only satisfies the Target cell initiation handoff request of customer service demand to surplus resources.Thereby the inventive method has been taken all factors into consideration the load state of user's mobility and service feature, sub-district and has been realized handover optimization, has reduced unnecessary switching repeatedly, has reduced the handover blocking rate, has improved satisfaction of users.
Technical scheme of the present invention: the switching optimization method of femtocell under the non-closed mode of the present invention (femtocell formula base station) comprises the steps:
(1) femtocell self study stage of admission velocity thresholding at first after at every turn redeploying start is the maximum translational speed of user that reference data confirms to allow to initiate to said femtocell handoff request with the residence time.
(2) network configuration handover measurement parameter detects reference signal receiving intensity and Reference Signal Received Quality, user velocity information, the business state information of adjacent area femtocell, speed threshold and the load state of adjacent area femtocell by UE.
(3) mobility of UE analysis user and service feature are specially when user moving speed surpasses certain adjacent area femtocell speed threshold, forbid initiating handoff request to this femtocell.When user moving speed is lower than speed threshold, the sluggish Hys_qos in conjunction with user's professional QOS requires to choose differentiation gets into next step.
(4) UE analyzes adjacent area femtocell reference signal receiving intensity and Reference Signal Received Quality; Adopt the sluggish Hys_qos of differentiation; Be preferably switchover policy with femtocell; The adjacent area femtocell that satisfies switching condition is added the Target cell tabulation in an orderly manner, report the cell-of-origin through trigger event; And, get into next step simultaneously to speed threshold and the load state of cell-of-origin report of user velocity information, business state information, target femtocell.
(5) cell-of-origin utilizes the handover measurement information that UE reports, and the disposable load situation of evaluating objects femtocell is specially surplus resources as said femtocell and satisfies customer service and take, to this femtocell initiation handoff request; Otherwise, forbid initiating handoff request to this femtocell.
Can find out from above technical scheme, thereby the inventive method has been taken all factors into consideration the load state of user's mobility and service feature, sub-district and has been realized handover optimization.Compared with present technology, its beneficial effect is: reduced unnecessary switching repeatedly, reduced the handover blocking rate, improved satisfaction of users.
Description of drawings
Fig. 1 is an embodiment of the invention handover optimization flow chart;
Fig. 2 disassembles sketch map in detail for the step 101 of embodiment of the invention handover optimization flow chart;
Fig. 3 disassembles sketch map in detail for the step 103 of embodiment of the invention handover optimization flow chart;
Fig. 4 disassembles sketch map in detail for the step 104 of embodiment of the invention handover optimization flow chart;
Fig. 5 disassembles sketch map in detail for the step 105 of embodiment of the invention handover optimization flow chart.
Embodiment
Below in conjunction with accompanying drawing, most preferred embodiment is elaborated, but protection scope of the present invention is not limited to said embodiment.
Embodiment: the switching optimization method of femtocell under a kind of non-closed mode, Fig. 1 is the general flow chart of present embodiment, comprises the steps:
The self study to speed threshold is accomplished in step 101:femtocell start back.As shown in Figure 2, femtocell gets into the speed threshold learning phase after start, is that judgement standard (for example: residence time is 10s) is installed speed threshold scene under to confirm said femtocell in correspondence through study after a while with the residence time.
Step 102:UE comprises reference signal receiving intensity RSRP, Reference Signal Received Quality RSRQ, signal RTT two-way time, signal angle of arrival AoA, professional QOS rank QCI, adjacent area surplus resources through some information of periodic monitoring and collection Serving cell and neighbor cell.
Step 103:UE estimates to obtain the distance of user and base station: d=c * RTT/2 through measure R TT, in conjunction with the estimation that AoA obtains customer location, compare two change in location of measuring moment UE and obtain the estimation to user movement speed.As shown in Figure 3, have only when user velocity is not more than the speed threshold of adjacent area femtocell, just allow UE to shown in femtocell initiate handoff request.UE confirms that with service resources type and service priority differentiation is sluggish through measuring the rank QCI of professional QOS.Confirm Hys_qos specifically follow following principle: GBR professional be higher than the Non-GBR business, the business that when resource type is identical, (is all GBR or Non-GBR) priority is high is higher than the low business of priority.
Whether the step 104:UE relatively result of handover measurement satisfies the preferential condition of switching of femtocell, when Mn-Hys_qos＞Ms+off triggers the A3 incident, when Mn-Hys_qos＞femto_first_threshold, triggers the A4 incident.Wherein Mn is adjacent sub-district RSRP or RSRQ, and Ms is cell-of-origin RSRP or RSRQ, and off is a Cell Individual Offset, and femto_first_threshold is the preferential handoff threshold of femtocell.
As shown in Figure 4, when the cell-of-origin is macrocell, UE reported the A4 incident when adjacent sub-district was femtocell, triggered the preferential switch decision of femtocell.Under other situations, UE reports the A3 incident need cell-of-origin signal strength signal intensity or signal quality and necessary handoff threshold handover_threshold comparison be prevented inessential switching.
Often more than one of the sub-district that generally meets trigger condition, need system from numerous candidate cells, select one only as switching target small area.So quality evaluation is carried out in the sub-district, and generates the Target cell tabulation by good and bad ordering.According to the RSRP and the RSRQ of measurement and report, adopt following cell quality assessment algorithm cell_performance:
w_rsrp+w_rsrq＝1
W_rsrp, w_rsrq are respectively the weight of RSRP and RSRQ.The quality of big more this candidate cell of explanation of the value of Cell_value is good more, should pay the utmost attention to switching.
Step 105: the loading condition of the surplus resources evaluating objects sub-district through the comparison object sub-district, the surplus resources of Target cell is represented by the surplus resources piece:
Adopt resource reservation policy to improve service switchover priority, R
ReserverIt is reserved resource.
When can not satisfying customer service, the surplus resources of Target cell takes, with the deletion from the Target cell tabulation of this sub-district; When Target cell tabulation is not then got new Target cell and analyzed up to finding and meet the Target cell of load request and initiate handoff request for empty.
Step 106: if femtocell redeploys, then return step 101, otherwise continue to use the measurement and report result that step 101 gained speed threshold is analyzed UE.
The personage who knows this area will understand, though described specific embodiment for the ease of explaining here, can under the situation that does not deviate from spirit and scope of the invention, make various changes.Therefore, except accompanying claims, can not be used to limit the present invention.
Claims (7)
1. the switching optimization method of femtocell under the non-closed mode is characterized in that comprising the steps:
(1) femtocell formula base station femtocell is after redeploying start at every turn, at first the self study speed threshold;
(2) be that user terminal is monitored the femtocell of adjacent area and collected handoff parameter by UE, these parameters comprise: the speed threshold and the load state that comprise reference signal receiving intensity RSRP, Reference Signal Received Quality RSRQ, user velocity information, business state information, signal RTT two-way time, signal angle of arrival AoA, professional QOS rank QCI, adjacent area femtocell;
(3) mobility of UE analysis user and service feature are specially:
When the user moving speed of this UE surpasses certain adjacent area femtocell speed threshold, then forbid initiating handoff request to this femtocell; When the user moving speed of this UE was no more than certain adjacent area femtocell speed threshold, the sluggish Hys_qos in conjunction with user's professional QOS requires to choose differentiation got into step 4);
(4) analyze adjacent area femtocell loading condition by UE:
UE analyzes adjacent area femtocell reference signal receiving intensity and Reference Signal Received Quality; Adopt the sluggish Hys_qos of differentiation; Be preferably switchover policy with femtocell, the adjacent area femtocell that satisfies switching condition is added the Target cell tabulation, report the cell-of-origin through trigger event; And, get into step 5) simultaneously to speed threshold and the load state of cell-of-origin report of user velocity information, business state information, Target cell femtocell;
(5) cell-of-origin utilizes the handover measurement information that UE reports, the load state of evaluating objects sub-district femtocell, and the load state of Target cell femtocell is characterized by the surplus resources of Target cell; Be specially, take, then initiate handoff request to this Target cell femtocell when the surplus resources of Target cell femtocell can satisfy customer service; Take when the surplus resources of Target cell femtocell can not satisfy customer service, then forbid initiating handoff request to this Target cell femtocell;
(6), then return step 1), otherwise continue to use the measurement and report result that step 1) gained speed threshold is analyzed UE if femtocell redeploys.
2. according to the switching optimization method of femtocell under the described a kind of non-closed mode of claim l, it is characterized in that:
In the step (1), femtocell is judgement standard with the residence time, confirms that through study femtocell installs the speed threshold under the scene in correspondence.
3. according to the switching optimization method of femtocell under the described a kind of non-closed mode of claim l; It is characterized in that: in the step (3); User moving speed information is united sign by signal RTT two-way time and signal angle of arrival AoA; UE estimates to obtain the distance of user and base station: d=c * RTT/2 through measure R TT, in conjunction with the estimation that AoA obtains customer location, compare two change in location of measuring moment UE and obtain the estimation to user movement speed.
4. the switching optimization method of femtocell under a kind of non-closed mode according to claim 1; It is characterized in that: in the step 3); Professional QOS in conjunction with the user requires the sluggish Hys_qos that chooses differentiation to be; UE confirms the sluggish Hys_qos of differentiation through measuring the rank QCI of professional QOS with service resources type and service priority;
Confirm that the principle that the sluggish Hys_qos of differentiation specifically follows is: GBR is professional is higher than the Non-GBR business, and when resource type was identical, when promptly being all GBR or Non-GBR, the business that priority is high was higher than the low business of priority.
5. the switching optimization method of femtocell under a kind of non-closed mode according to claim 1 is characterized in that: in the step (4), the method that judgement adjacent area femtocell satisfies switching condition is:
By UE relatively the result of handover measurement whether satisfy the preferential condition of switching of femtocell, when Mn-Hys_qos＞Ms+off, trigger the A3 incident, when Mn-Hys_qos＞femto_first_threshold, trigger the A4 incident; Wherein Mn is adjacent cell reference signals receiving intensity or Reference Signal Received Quality, and Ms is cell-of-origin reference signal receiving intensity or Reference Signal Received Quality, and off is a Cell Individual Offset, and femto_first_threshold is the preferential handoff threshold of femtocell.
When the cell-of-origin is macrocell, when adjacent sub-district was femtocell, UE reported the A4 incident, triggered the preferential switch decision of femtocell; Under other situations, UE reports the A3 incident need cell-of-origin signal strength signal intensity or signal quality and necessary handoff threshold handover_threshold comparison be prevented inessential switching.
6. the switching optimization method of femtocell under a kind of non-closed mode according to claim 5; It is characterized in that: in the step (4), the method that generates the Target cell tabulation is that one of selection is only as switching target small area from candidate cell; Then need carry out quality evaluation to the sub-district; And by good and bad ordering, the method for quality evaluation is, according to the reference signal receiving intensity and the Reference Signal Received Quality of measurement and report; Adopt cell quality assessment algorithm cell_performance to assess, the cell_performance algorithm is following:
w_rsrp+w_rsrq＝1
W_rsrp, w_rsrq are respectively the weight of reference signal receiving intensity and Reference Signal Received Quality; The quality of big more this candidate cell of explanation of the value of Cell_value is good more, should pay the utmost attention to switching.
7. the switching optimization method of femtocell under a kind of non-closed mode according to claim 1; It is characterized in that: in the step (4); Characteristic is in the said step 5); The loading condition of surplus resources evaluating objects sub-district femtocell through the comparison object sub-district, the surplus resources of Target cell is represented by surplus resources piece R:
The number of resources summation of shining upon in the measuring period for Δ T, N
Δ TBe the resource sum that femtocell can distribute in measuring period, adopt resource reservation policy to improve service switchover priority, R
ReserverIt is reserved resource;
When can not satisfying customer service, the surplus resources of Target cell takes, with the deletion from the Target cell tabulation of this sub-district; When Target cell tabulation be empty, then get new Target cell analyze up to discovery meet Target cell femtocell load request Target cell and initiate handoff request.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014022961A1 (en) * | 2012-08-06 | 2014-02-13 | 华为技术有限公司 | Cell selection method, user equipment and network node |
| CN104113874A (en) * | 2013-04-16 | 2014-10-22 | 电信科学技术研究院 | Method of measurement report, and device of measurement report |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1533213A (en) * | 2003-03-25 | 2004-09-29 | ���ǵ�����ʽ���� | Device and method for selecting connecting network in multiple radio communication network |
| CN101754279A (en) * | 2009-12-11 | 2010-06-23 | 中国科学技术大学 | Load balancing method for guaranteeing quality of service of real-time services |
| CN102204345A (en) * | 2008-11-05 | 2011-09-28 | 阿尔卡特朗讯公司 | Location-based handovers from a macrocell to a femtocell using event-triggered measurement reporting |
-
2012
- 2012-01-13 CN CN2012100116314A patent/CN102547898A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1533213A (en) * | 2003-03-25 | 2004-09-29 | ���ǵ�����ʽ���� | Device and method for selecting connecting network in multiple radio communication network |
| CN102204345A (en) * | 2008-11-05 | 2011-09-28 | 阿尔卡特朗讯公司 | Location-based handovers from a macrocell to a femtocell using event-triggered measurement reporting |
| CN101754279A (en) * | 2009-12-11 | 2010-06-23 | 中国科学技术大学 | Load balancing method for guaranteeing quality of service of real-time services |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103765957A (en) * | 2012-08-06 | 2014-04-30 | 华为技术有限公司 | Cell selection method, user equipment and network node |
| WO2014022961A1 (en) * | 2012-08-06 | 2014-02-13 | 华为技术有限公司 | Cell selection method, user equipment and network node |
| CN104113874A (en) * | 2013-04-16 | 2014-10-22 | 电信科学技术研究院 | Method of measurement report, and device of measurement report |
| CN104113874B (en) * | 2013-04-16 | 2019-06-25 | 电信科学技术研究院 | It is a kind of to measure the method and device reported |
| CN105491636A (en) * | 2014-09-19 | 2016-04-13 | 中兴通讯股份有限公司 | Cell switching method and device |
| CN107005857B (en) * | 2015-04-30 | 2021-08-31 | 华为技术有限公司 | Service user plane cell determining and indicating method, bearer establishing method and equipment |
| CN107005857A (en) * | 2015-04-30 | 2017-08-01 | 华为技术有限公司 | The user plane cell of business is determined and indicating means, carrying establishing method and equipment |
| CN105282792A (en) * | 2015-09-16 | 2016-01-27 | 华信咨询设计研究院有限公司 | LTE cell switching method based on load coupling |
| CN105282792B (en) * | 2015-09-16 | 2018-09-07 | 华信咨询设计研究院有限公司 | LTE cell switching methods based on load matched |
| CN105682156A (en) * | 2015-12-11 | 2016-06-15 | 华信咨询设计研究院有限公司 | Load-based Gaussian distribution adaptive LTE (Long Term Evolution) cell switching method |
| CN105682156B (en) * | 2015-12-11 | 2018-11-02 | 华信咨询设计研究院有限公司 | The adaptive LTE cell switching methods of Gaussian Profile based on load |
| CN108260177A (en) * | 2016-12-28 | 2018-07-06 | 大唐移动通信设备有限公司 | A kind of serving cell switching method and base station based on type of service |
| CN108495341A (en) * | 2018-02-08 | 2018-09-04 | 西安电子科技大学 | A kind of method for obligating resource and system, mobile communication system based on flow direction prediction |
| CN109982401A (en) * | 2019-03-21 | 2019-07-05 | 南京先锋硕通无线技术有限公司 | Switching optimization method suitable for LTE wireless signal acquiring and analysis system |
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Application publication date: 20120704 |