CN103889010A - Cell reselection parameter adjustment method and device - Google Patents
Cell reselection parameter adjustment method and device Download PDFInfo
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- CN103889010A CN103889010A CN201410114958.3A CN201410114958A CN103889010A CN 103889010 A CN103889010 A CN 103889010A CN 201410114958 A CN201410114958 A CN 201410114958A CN 103889010 A CN103889010 A CN 103889010A
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Abstract
The invention discloses a cell reselection parameter adjustment method and device. The method includes the steps that the maximum signal intensity value in signal intensity values, monitored by a base station of a service cell, of neighbor cells is determined, and a neighbor cell with the maximum signal intensity value is used as a strongest interference neighbor cell; a point which meets the requirement that the difference between the signal intensity value of the strongest interference neighbor cell and the signal intensity value of the service cell is larger than a set delay value of the service cell for set time is determined, and the signal intensity value, at the point, of the service cell is recorded; the difference between the recorded signal intensity value and set minimum emitting power received by the service cell is used as a cell reselection measurement trigger threshold value and issued to UE in the service cell. Due to the fact that the condition for determining the point is the condition for the UE to conduct cell reselection, when the difference between the signal intensity value of the point and the set minimum emitting power is used as the cell reselection measurement trigger threshold value, the UE can start reselection measurement in good time, and the call drop phenomenon of the UE is reduced.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to a kind of adjustment method of cell reselection parameter and equipment.
Background technology
In wireless communication system, for signal covering is carried out in full wafer geographic area, dispose according to macro base station, conventionally need to this region rationally be planned meticulously and be designed, making can provide good covering to mobile terminal in whole geographic range.Grand Netcom crosses and carries out artificially the network planning, in planning region, by reasonably planning, can cover most of region, can, for user provides business, nonetheless, still there will be the place not covering, cannot, for user provides service or the service meeting the demands is provided, have a strong impact on user awareness in this class region.
The region that business occurs current user more and more trends towards indoor, especially the demand of the large data service of room area, and unique characteristic of channel of indoor wireless environments and the characteristic of interior architecture, make such as, stopping through interior architecture thing (wall, door and window etc.) of grand net signal, and cover phenomenon a little less than causing indoor signal, for addressing this problem, industry has proposed the concept of Home eNodeB.Home eNodeB is different from macro base station, it is generally deployed in subscriber household, and provide plug-and-play feature, its network planning degree is relatively low, Femto base station (femto base station, claim again Home NodeB) mainly towards average family and medium-sized and small enterprises client, be the household base station device that a kind of coverage is less, for improving the indoor covering of network.
When terminal (UE) is under idle (Idle) state, the covering quality of base station has a certain impact to the gravity treatment action of UE.Cell reselection is that travelling carriage is found a signal quality and carried out resident process than better community, Serving cell to be adjusted under idle condition.Arranging cell reselection impact of reselecting parameters is very large, arranges when unreasonable in reselecting parameters, on the one hand, may cause ping-pong reselection; On the other hand, can cause UE gravity treatment in time, and then the handover success rate of UE is reduced.
Be specifically described on the other hand described below: dispose in the process of website in real base station, owing to being by manually arranging net, there will be unavoidably the strong phenomenon covering of adjacent bus station.In addition, along with Femto base station is disposed on a large scale, because Femto base station is plug and play, there is the strong phenomenon covering of adjacent bus station in the deployment of Femto base station possibly.For the UE that does business at Femto base station and neighbor base station crossover region, if reselecting parameters arranges unreasonable, can cause UE also to cover when edge gravity treatment in time at website goes out, if now UE does business, the strong signal of adjacent bus station is just larger to doing the interference of UE of business under this website, be easy to cause handoff failure, cause conversation loss, affect user awareness.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of adjustment method of cell reselection parameter and equipment, in order to improve the reasonability of cell reselection parameters.
First aspect, provides a kind of adjustment method of cell reselection parameter, and described method comprises:
Determine maximum signal strength values in the signal strength values of each adjacent cell that the base station of Serving cell listens to, and using this maximum signal strength values from adjacent cell as strong jamming adjacent cell;
Determine and meet the point that the signal strength values of strong jamming adjacent cell is greater than the Serving cell hysteresis of setting with the difference of the signal strength values of Serving cell and continues the first setting duration, and be recorded in the signal strength values of this Serving cell;
The difference of the minimum emissive power that the Serving cell of the described signal strength values of record and setting is received is handed down to the UE in Serving cell as cell reselection measurement triggering threshold value.
By this possible implementation, due to the difference of the signal strength values of strong jamming adjacent cell and the signal strength values of Serving cell be greater than the Serving cell hysteresis of setting and continue first set this condition of duration just UE start the condition of carrying out cell reselection after cell reselection is measured, therefore, the point that meets described condition just UE needs carries out the position of cell reselection, the difference of the minimum emissive power that is recorded in the signal strength values of this Serving cell and the reception of the Serving cell of setting is handed down to the UE in Serving cell as cell reselection measurement triggering threshold value, improve the reasonability of reselecting parameters, can make UE preferably start gravity treatment measurement opportunity, and carry out in time cell reselection, and then the probability that UE need to be switched in the time doing business reduces, also just correspondingly reduced the number of times that call drop phenomenon appears in UE in the time doing business.
In conjunction with first aspect, in the possible implementation of the first, in the time that the signal strength values of described maximum is not less than the strong jamming adjacent cell threshold value of setting, determine described point.
By this possible implementation, utilize the strong jamming adjacent cell threshold value of maximum signal strength values and setting to compare, determine that strong jamming adjacent cell affects possibly UE community to the interference of Serving cell and switches, now carry out again determining and issuing of cell reselection measurement triggering threshold value, can determine and issue that system that cell reselection measurement triggering threshold value needs is processed improves the practicality of the cell reselection measurement triggering threshold value issuing to UE in resource reducing.
In conjunction with first aspect, or the first of first aspect may implementation, in the possible implementation of the second, on the straight line being connected between the base station of Serving cell and the base station of described strong jamming adjacent cell, determines described point.
By this possible implementation, dwindle the scope at the place of described point, can determine quickly described point, and then carry out quickly determining and issuing of cell reselection measurement triggering threshold value, also shorten the time that described cell reselection measurement triggering threshold value needs of determining.
In conjunction with the second mode in the cards of first aspect, in the third mode in the cards, on the straight line being connected between the described base station in Serving cell and the base station of described strong jamming adjacent cell, determine described point, specifically comprise:
The signal strength values PCCPCH RSCP of the broadcast channel of the broadcast channel transmission power level PCCPCHTXpower_n of the strong jamming adjacent cell listening to according to the base station of Serving cell and the strong jamming adjacent cell that listens to, and the link load propagation model of selecting, distance described in determining between the base station of strong jamming adjacent cell and the base station of described Serving cell, described link load propagation model is to select according to the scene between Serving cell and strong jamming adjacent cell;
The described distance of utilizing the >Qhyst of formula (PCCPCHTXpower_n-Linkloss_n)-(PCCPCHTXpower_s-Linkloss_s) and determine is determined described point;
Wherein, PCCPCHTXpower_s is the broadcast channel transmission power level of Serving cell, Linkloss_n is the link loss value of signal between described point and the base station of strong jamming adjacent cell, Linkloss_s is the link loss value of signal between described point and the base station of Serving cell, and Qhyst is the Serving cell hysteresis of setting.
In conjunction with first aspect, in the 4th kind of mode in the cards, using the difference of the minimum emissive power of the Serving cell reception of described signal strength values and the setting of record after cell reselection measurement triggering threshold value is handed down to the UE in Serving cell, described method also comprises:
Determine that the base station of Serving cell gets in the second setting duration to there is the quantity that is greater than the interference value of the strong jamming threshold value of setting in the interference value of business;
In the time that described quantity is more than or equal to the first interference number of times thresholding of setting, strong jamming indication is set to true TRUE; In the time that described quantity is less than or equal to the second interference number of times thresholding of setting, strong jamming indication is set to false FALSE;
In the time detecting that strong jamming indicates continuous set point number to be TRUE, tune up set point of cell reselection measurement triggering threshold value, and the cell reselection measurement triggering threshold value after tuning up is issued to described UE;
In the time detecting that strong jamming indicates continuous set point number to be FALSE, turn set point of cell reselection measurement triggering threshold value down, and the cell reselection measurement triggering threshold value after turning down is issued to described UE.
By this possible implementation, after cell reselection measurement triggering threshold value is pre-determined and issued, according to actual disturbed condition, UE is adjusted and be handed down to cell reselection measurement triggering threshold value again.Further improving the rational while of cell reselection parameters, also making UE when in strong jamming region, can start in time cell reselection measures, carry out follow-up cell reselection operation, reduce the probability that UE need to switch in the time doing business, and then reduced the number of times that call drop phenomenon appears in UE in the time doing business.
Second aspect, provides a kind of cell reselection parameters to adjust equipment, and described equipment comprises:
The first determination module, for determining the maximum signal strength values of signal strength values of each adjacent cell that the base station of Serving cell listens to, and using this maximum signal strength values from adjacent cell as strong jamming adjacent cell;
The second determination module, meets for determining the point that the signal strength values of strong jamming adjacent cell is greater than the Serving cell hysteresis of setting with the difference of the signal strength values of Serving cell and continues the first setting duration, and is recorded in the signal strength values of this Serving cell;
Sending module, for being handed down to the UE in Serving cell using the difference of the minimum emissive power of the Serving cell reception of the described signal strength values of record and setting as cell reselection measurement triggering threshold value.
By this possible implementation, due to the difference of the signal strength values of strong jamming adjacent cell and the signal strength values of Serving cell be greater than the Serving cell hysteresis of setting and continue to set this condition of duration just UE start the condition of carrying out cell reselection after cell reselection is measured, therefore, the point that meets described condition just UE needs carries out the position of cell reselection, the difference of the minimum emissive power that is recorded in the signal strength values of this Serving cell and the reception of the Serving cell of setting is handed down to the UE in Serving cell as cell reselection measurement triggering threshold value, improve the reasonability of reselecting parameters, can make UE preferably start gravity treatment measurement opportunity, carry out in time cell reselection simultaneously, and then the probability that need to switch in the time doing business is reduced, also just correspondingly reduced the number of times that call drop phenomenon appears in UE in the time doing business.
In conjunction with second aspect, in the possible implementation of the first, described the second determination module, when be not less than the strong jamming adjacent cell threshold value of setting at the signal strength values of described maximum, determines described point.
By this possible implementation, utilize the strong jamming adjacent cell threshold value of maximum signal strength values and setting to compare, determine that strong jamming adjacent cell affects possibly UE community to the interference of Serving cell and switches, now carry out again determining and issuing of cell reselection measurement triggering threshold value, can determine and issue that system that cell reselection measurement triggering threshold value needs is processed improves the practicality of the cell reselection measurement triggering threshold value issuing to UE in resource reducing.
In conjunction with second aspect, or the first of second aspect possibility implementation, in the possible implementation of the second, described the second determination module, on the straight line being connected between the base station in Serving cell and the base station of described strong jamming adjacent cell, determine described point.
By this possible implementation, dwindle the in-scope of described point, can determine quickly described point, and then carry out quickly determining and issuing of cell reselection measurement triggering threshold value, also shorten the time that described cell reselection measurement triggering threshold value needs of determining.
In conjunction with the second mode in the cards of second aspect, in the third mode in the cards, described the second determination module, specifically for the signal strength values PCCPCH RSCP of the broadcast channel of the broadcast channel transmission power level PCCPCHTXpower_n of the strong jamming adjacent cell that listens to according to the base station of Serving cell and the strong jamming adjacent cell that listens to, and the link load propagation model of selecting, distance described in determining between the base station of strong jamming adjacent cell and the base station of described Serving cell, described link load propagation model is to select according to the scene between Serving cell and strong jamming adjacent cell, the described distance of utilizing the >Qhyst of formula (PCCPCHTXpower_n-Linkloss_n)-(PCCPCHTXpower_s-Linkloss_s) and determine is determined described point, wherein, PCCPCHTXpower_s is the broadcast channel transmission power level of Serving cell, Linkloss_n is the link loss value of signal between described point and the base station of strong jamming adjacent cell, Linkloss_s is the link loss value of signal between described point and the base station of Serving cell, and Qhyst is the Serving cell hysteresis of setting.
In conjunction with second aspect, in the 4th kind of mode in the cards, described equipment also comprises:
The 3rd determination module, for determine that the base station of Serving cell gets in the second setting duration to existing the interference value of business to be greater than the quantity of the interference value of the strong jamming threshold value of setting;
Judge module, while disturbing number of times thresholding, is set to true TRUE by strong jamming indication for be more than or equal to first of setting in described quantity; In the time that described quantity is less than or equal to the second interference number of times thresholding of setting, strong jamming indication is set to false FALSE;
Adjusting module, in the time detecting that strong jamming indicates continuous set point number to be TRUE, tunes up set point of cell reselection measurement triggering threshold value; In the time detecting that strong jamming indicates continuous set point number to be FALSE, turn set point of cell reselection measurement triggering threshold value down;
Described sending module, also for the cell reselection measurement triggering threshold value after tuning up is issued to described UE, and is issued to described UE by the cell reselection measurement triggering threshold value after turning down.
By this possible implementation, after cell reselection measurement triggering threshold value is pre-determined and issued, according to actual disturbed condition, UE is adjusted and be handed down to cell reselection measurement triggering threshold value again.Further improving the rational while of cell reselection parameters, also making UE when in strong jamming region, can start in time cell reselection measures, carry out follow-up cell reselection operation, reduce the probability that UE need to switch in the time doing business, further reduced the number of times that call drop phenomenon appears in UE in the time doing business.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of adjustment method of cell reselection parameter in the embodiment of the present invention one;
Fig. 2 is the schematic diagram of determining point on the straight line being connected between the base station in Serving cell in the embodiment of the present invention one and the base station of strong jamming adjacent cell;
Fig. 3 is the flow chart of a kind of adjustment method of cell reselection parameter in the embodiment of the present invention two;
Fig. 4 is the structural representation that a kind of cell reselection parameters in the embodiment of the present invention three is adjusted equipment.
Embodiment
In order to solve the problem that the handover success rate reduction of the unreasonable UE causing is set because of reselecting parameters in prior art, the embodiment of the present invention provides a kind of adjustment method of cell reselection parameter and equipment.
First the basic principle of the embodiment of the present invention is described below.
At present, to carry out the step of cell reselection as follows for UE:
The first step: the signal strength signal intensity of Serving cell that receives of judgement and the difference of the minimum emissive power of the Serving cell of setting reception are less than or equal to the cell reselection measurement triggering threshold value that the base station of Serving cell issues;
Second step: in the judged result of the first step when being, UE starts cell reselection and measures, whether the signal strength signal intensity that judges adjacent cell meets cell reselection condition, adjacent cell described in gravity treatment in the time meeting reselection conditions, described cell reselection condition is: the difference of the signal strength values of adjacent cell and the signal strength values of Serving cell is greater than the Serving cell hysteresis of setting and lasting regular hour.
In practical application, UE in Serving cell is subject to stronger adjacent cell while disturbing, and the signal strength signal intensity that there will be the adjacent cell that UE receives has met described cell reselection condition but the signal strength signal intensity of the Serving cell that this UE receives does not also meet the situation of cell reselection measurement triggering threshold value.In described situation, the signal strength signal intensity of the Serving cell receiving due to UE does not also meet cell reselection measurement triggering threshold value, therefore, this UE can not carry out follow-up cell reselection, this just causes UE in the time doing business, be subject to very large adjacent cell and disturb, to such an extent as in the time carrying out community switching, be easy to cause handoff failure.Therefore, if the step in basic principle is turned around and is derived cell reselection measurement triggering threshold value, also even utilize the signal strength values of the received Serving cell of UE while meeting reselection conditions that cell reselection measurement triggering threshold value is set, can avoid well the appearance of above-mentioned situation, also just improved the reasonability of cell reselection parameters, can make UE preferably start cell reselection measurement opportunity, and carry out in time cell reselection, and then the probability that UE need to be switched in the time doing business reduces, also just correspondingly reduced the number of times that call drop phenomenon appears in UE in the time doing business.
Below in conjunction with Figure of description, the embodiment of the present invention is described in detail.
Embodiment mono-
The embodiment of the present invention one provides a kind of adjustment method of cell reselection parameter, and its flow process as shown in Figure 1, specifically comprises the following steps:
Step 101: determine maximum signal strength values in the signal strength values of each adjacent cell that the base station of Serving cell listens to, and using this maximum signal strength values from adjacent cell as strong jamming adjacent cell;
Particularly, the base station of Serving cell can obtain the signal strength values of each adjacent cell by opening self-organizing network (Self Orgnaized Network, SON) listening functions.Now, the base station newly powering on just starts Neighboring Cell List self-configuring algorithm completing after the success of Cell searching and Network Synchronization.
The information of adjacent cells that SON intercepts comprises: PCCPCH transmitting power (PCCPCHTxPower), co-frequency neighbor cell list (IntraFreqCellList), iso-frequency adjacent community list (InterFreqCellList), and different system adjacent cell list, information in this co-frequency neighbor cell list and iso-frequency adjacent community list includes: the absolute wireless frequency channel number of UTRA (UTRA absolute radio frequency channel number, uarfcn) and cell parameter identification number (cellParametersId).
For TD SDMA (Time Division-Synchronous Code Division Multiple Access, TD-SCDMA) system, base station obtains frequency, scrambler and the PCCPCH RSCP value of each community by Cell searching, then select several adjacent cells to add Neighboring Cell List according to the size of each CBCH signal strength values (PCCPCH RSCP).Neighboring Cell List Zhong community comprises TD-SCDMA macro base station community and TD-SCDMA Femto base station cell.
When SON listening periods timer arrives, can again intercept neighboring BS information in addition, now will upgrade neighboring BS information.
By the PCCPCH RSCP value of the adjacent area that listens to, sort from big to small according to the PCCPCH RSCP value of adjacent area, find out the adjacent cell of signal strength signal intensity maximum, using this maximum signal strength values from adjacent cell as strong jamming adjacent cell.
Consider that cell reselection measurement triggering threshold value has three kinds, the first is co-frequency cell gravity treatment measurement triggering threshold value, the second is iso-frequency adjacent community gravity treatment measurement triggering threshold value, the third is different system cell gravity treatment measurement triggering threshold value, in this step 101, also can be for the signal strength values of the adjacent cell in co-frequency neighbor cell list, determine maximum co-frequency neighbor cell signal strength values; For the signal strength values of the adjacent cell in the list of iso-frequency adjacent community, determine maximum iso-frequency adjacent community signal strength values; For the signal strength values of the adjacent cell in different system adjacent cell list, determine maximum different system adjacent cell signal strength values, so that three maximums that subsequent step utilization is determined here are correspondingly carried out determining and issuing of these three kinds of cell reselection measurement triggering threshold values.
Step 102: determine and meet the point that the signal strength values of strong jamming adjacent cell is greater than the Serving cell hysteresis of setting with the difference of the signal strength values of Serving cell and continues the first setting duration, and be recorded in the signal strength values of this Serving cell;
Consider and will determine and issue that system that cell reselection measurement triggering threshold value needs is processed in resource also improves the practicality of the cell reselection measurement triggering threshold value issuing to UE reducing, preferably, in the time that the signal strength values of described maximum is not less than the strong jamming adjacent cell threshold value of setting, determine described point.
For dwindling the in-scope of described point, determine quickly described point, and then carry out quickly determining and issuing of cell reselection measurement triggering threshold value, preferably, on the straight line being connected between the base station of Serving cell and the base station of described strong jamming adjacent cell, determine described point.
Preferably, on the straight line being connected between the described base station in Serving cell and the base station of described strong jamming adjacent cell, determine described point, specifically comprise following two steps:
Step 1): the signal strength values PCCPCH RSCP of the broadcast channel of the broadcast channel transmission power level PCCPCHTXpower_n of the strong jamming adjacent cell listening to according to the base station of Serving cell and the strong jamming adjacent cell that listens to, and the link load propagation model of selecting, distance described in determining between the base station of strong jamming adjacent cell and the base station of described Serving cell, described link load propagation model is to select according to the scene between Serving cell and strong jamming adjacent cell;
Step 2): utilize the >Qhyst of formula (PCCPCHTXpower_n-Linkloss_n)-(PCCPCHTXpower_s-Linkloss_s) and the described distance determined is determined described point;
Wherein, PCCPCHTXpower_s is the broadcast channel transmission power level of Serving cell, Linkloss_n is the link loss value of signal between described point and the base station of strong jamming adjacent cell, Linkloss_s is the link loss value of signal between described point and the base station of Serving cell, and Qhyst is the Serving cell hysteresis of setting.
Shown in Fig. 2, be on the described straight line being connected between the base station of Serving cell (O1) and the base station (O2) of described strong jamming adjacent cell, the described point (being O point in Fig. 2) of determining, in Fig. 2, d1 is the distance between O and O1, and d2 is the distance between O and O2.
It should be noted that, also can utilize the method for drive test, carry out this step 102; The base station of Serving cell can also utilize the signal strength values of Serving cell and the signal strength values of adjacent cell that the UE with the signal strength values of Serving cell and the signal strength values reporting functions of adjacent cell reports to determine described point, and is recorded in the signal strength values of this Serving cell.
Step 103: the difference of the minimum emissive power that the Serving cell of the described signal strength values of record and setting is received is handed down to the UE in Serving cell as cell reselection measurement triggering threshold value.
Particularly, if determined strong jamming adjacent cell in all adjacent cells (comprising co-frequency neighbor cell, iso-frequency adjacent community and different system adjacent cell) in step 101,, in this step 103, can specifically comprise:
In the time that the described frequency of strong jamming adjacent cell is identical with the frequency of Serving cell, the difference of the minimum emissive power that the described signal strength values of record and the Serving cell of setting are received is as being handed down to the UE in Serving cell with frequently triggering gravity treatment measurement threshold value;
In the time that the described frequency of strong jamming adjacent cell is not identical with the frequency of Serving cell, the difference of the minimum emissive power that the described signal strength values of record and the Serving cell of setting are received triggers gravity treatment measurement threshold value as alien frequencies and is handed down to the UE in Serving cell;
In the time that the described system of strong jamming adjacent cell is not identical with the system of Serving cell, the difference of the minimum emissive power that the described signal strength values of record and the Serving cell of setting are received is handed down to the UE in Serving cell as different system triggers gravity treatment measurement threshold value.
If determine iso-frequency adjacent community signal strength values and the maximum different system adjacent cell signal strength values of maximum co-frequency neighbor cell signal strength values, maximum in step 101, can utilize step 102 to determine respectively 3 points, and 3 signal strength values, and then in this step 103, can determine co-frequency cell gravity treatment measurement triggering threshold value, iso-frequency adjacent community gravity treatment measurement triggering threshold value and different system cell gravity treatment measurement triggering threshold value, and be handed down to described UE.
In the scheme of the embodiment of the present invention one, due to the difference of the signal strength values of strong jamming adjacent cell and the signal strength values of Serving cell be greater than the Serving cell hysteresis of setting and continue first set this condition of duration just UE start the condition of carrying out cell reselection after cell reselection is measured, therefore, the point that meets described condition just UE needs carries out the position of cell reselection, the difference of the minimum emissive power that is recorded in the signal strength values of this Serving cell and the reception of the Serving cell of setting is handed down to the UE in Serving cell as cell reselection measurement triggering threshold value, improve the reasonability of reselecting parameters, can make UE preferably start gravity treatment measurement opportunity, and carry out in time cell reselection, and then the probability that UE need to be switched in the time doing business reduces, also just reduced accordingly the number of times that call drop phenomenon appears in UE in the time doing business.
The embodiment of the present invention one estimates in advance cell reselection measurement triggering threshold value and is handed down to UE, can be applicable to TD-SCDMA and Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, WCDMA) system, while being used in WCDMA system, signal strength values wherein refers to the signal strength values of Common Pilot Channel (Common Pilot Channel, CPICH).For further improving the reasonability of cell reselection measurement triggering threshold value, on the basis of the embodiment of the present invention one, the embodiment of the present invention two provides a kind of, according to actual interference situation, reselecting parameters has been carried out to the further scheme of adjustment.
Embodiment bis-
The embodiment of the present invention two provides a kind of adjustment method of cell reselection parameter, and its flow process as shown in Figure 3, specifically comprises the following steps:
Step 301 is identical to step 103 with the step 101 in embodiment mono-to step 303, repeats no more here.
Step 304: determine that the base station of Serving cell gets in the second setting duration to there is the quantity that is greater than the interference value of the strong jamming threshold value of setting in the interference value of business;
Step 305: in the time that described quantity is more than or equal to the first interference number of times thresholding of setting, strong jamming indication is set to true TRUE; In the time that described quantity is less than or equal to the second interference number of times thresholding of setting, strong jamming indication is set to false FALSE;
Step 306: in the time detecting that strong jamming indicates continuous set point number to be TRUE, tune up set point of cell reselection measurement triggering threshold value, and the cell reselection measurement triggering threshold value after tuning up is issued to described UE;
In the time detecting that strong jamming indicates continuous set point number to be TRUE, illustrate that now base station may be in strong jamming state, can tune up cell reselection measurement triggering threshold value, allow fringe region UE earlier gravity treatment go out.Because now fringe region is subject to larger adjacent area interference, if the now timely gravity treatment of UE is gone out, UE does business in this region, can be subject to larger interference, has a strong impact on user awareness.
Described continuous set point number is determined based on experience value, here its occurrence is not limited.
Step 307: in the time detecting that strong jamming indicates continuous set point number to be FALSE, turn set point of cell reselection measurement triggering threshold value down, and the cell reselection measurement triggering threshold value after turning down is issued to described UE.
In the time detecting that strong jamming indicates continuous set point number to be FALSE, illustrate that now base station may, not in strong jamming state, now can be turned gravity treatment measurement triggering threshold value down, allow the in good time gravity treatment of UE of fringe region go out.
In the scheme of the embodiment of the present invention two, after cell reselection measurement triggering threshold value is pre-determined and is issued, according to actual disturbed condition, UE is adjusted and be handed down to cell reselection measurement triggering threshold value again, further improve the reasonability of cell reselection parameters, while making UE be in strong jamming region, can start in time cell reselection measures, carry out follow-up cell reselection operation, further reduce the probability that UE need to switch in the time doing business, then reduce the number of times that call drop phenomenon appears in UE in the time doing business.
Embodiment tri-
Based on the same inventive concept of embodiment mono-and embodiment bis-, the embodiment of the present invention three provides a kind of cell reselection parameters to adjust equipment, its structural representation as shown in Figure 4.Described equipment comprises: the first determination module 41, the second determination module 42 and sending module 43; Wherein:
Described the first determination module 41, for determining the maximum signal strength values of signal strength values of each adjacent cell that the base station of Serving cell listens to, and using this maximum signal strength values from adjacent cell as strong jamming adjacent cell;
Described the second determination module 42, meet for determining the point that the signal strength values of strong jamming adjacent cell is greater than the Serving cell hysteresis of setting with the difference of the signal strength values of Serving cell and continues the first setting duration, and be recorded in the signal strength values of this Serving cell;
Described sending module 43, for being handed down to the UE in Serving cell using the difference of the minimum emissive power of the Serving cell reception of the described signal strength values of record and setting as cell reselection measurement triggering threshold value.
Preferably, described the second determination module 42, when be not less than the strong jamming adjacent cell threshold value of setting at the signal strength values of described maximum, determines described point.
Preferably, described the second determination module 42, on the straight line being connected between the base station in Serving cell and the base station of described strong jamming adjacent cell, determines described point.
Preferably, described the second determination module 42, specifically for the signal strength values PCCPCH RSCP of the broadcast channel of the broadcast channel transmission power level PCCPCHTXpower_n of the strong jamming adjacent cell that listens to according to the base station of Serving cell and the strong jamming adjacent cell that listens to, and the link load propagation model of selecting, distance described in determining between the base station of strong jamming adjacent cell and the base station of described Serving cell, described link load propagation model is to select according to the scene between Serving cell and strong jamming adjacent cell; The described distance of utilizing the >Qhyst of formula (PCCPCHTXpower_n-Linkloss_n)-(PCCPCHTXpower_s-Linkloss_s) and determine is determined described point; Wherein, PCCPCHTXpower_s is the broadcast channel transmission power level of Serving cell, Linkloss_n is the link loss value of signal between described point and the base station of strong jamming adjacent cell, Linkloss_s is the link loss value of signal between described point and the base station of Serving cell, and Qhyst is the Serving cell hysteresis of setting.
Preferably, described equipment also comprises:
The 3rd determination module 44, for determine that the base station of Serving cell gets in the second setting duration to existing the interference value of business to be greater than the quantity of the interference value of the strong jamming threshold value of setting;
Adjusting module 46, in the time detecting that strong jamming indicates continuous set point number to be TRUE, tunes up set point of cell reselection measurement triggering threshold value; In the time detecting that strong jamming indicates continuous set point number to be FALSE, turn set point of cell reselection measurement triggering threshold value down;
Described sending module 43, also for the cell reselection measurement triggering threshold value after tuning up is issued to described UE, and is issued to described UE by the cell reselection measurement triggering threshold value after turning down.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the modification of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. an adjustment method of cell reselection parameter, is characterized in that, described method comprises:
Determine maximum signal strength values in the signal strength values of each adjacent cell that the base station of Serving cell listens to, and using this maximum signal strength values from adjacent cell as strong jamming adjacent cell;
Determine and meet the point that the signal strength values of strong jamming adjacent cell is greater than the Serving cell hysteresis of setting with the difference of the signal strength values of Serving cell and continues the first setting duration, and be recorded in the signal strength values of this Serving cell;
The difference of the minimum emissive power that the Serving cell of the described signal strength values of record and setting is received is handed down to the UE in Serving cell as cell reselection measurement triggering threshold value.
2. the method for claim 1, is characterized in that, in the time that the signal strength values of described maximum is not less than the strong jamming adjacent cell threshold value of setting, determines described point.
3. method as claimed in claim 1 or 2, is characterized in that, on the straight line being connected between the base station of Serving cell and the base station of described strong jamming adjacent cell, determines described point.
4. method as claimed in claim 3, is characterized in that, on the straight line being connected, determines described point between the described base station in Serving cell and the base station of described strong jamming adjacent cell, specifically comprises:
The signal strength values PCCPCH RSCP of the broadcast channel of the broadcast channel transmission power level PCCPCHTXpower_n of the strong jamming adjacent cell listening to according to the base station of Serving cell and the strong jamming adjacent cell that listens to, and the link load propagation model of selecting, distance described in determining between the base station of strong jamming adjacent cell and the base station of described Serving cell, described link load propagation model is to select according to the scene between Serving cell and strong jamming adjacent cell;
The described distance of utilizing the >Qhyst of formula (PCCPCHTXpower_n-Linkloss_n)-(PCCPCHTXpower_s-Linkloss_s) and determine is determined described point;
Wherein, PCCPCHTXpower_s is the broadcast channel transmission power level of Serving cell, Linkloss_n is the link loss value of signal between described point and the base station of strong jamming adjacent cell, Linkloss_s is the link loss value of signal between described point and the base station of Serving cell, and Qhyst is the Serving cell hysteresis of setting.
5. the method for claim 1, it is characterized in that, using the difference of the minimum emissive power of the Serving cell reception of described signal strength values and the setting of record after cell reselection measurement triggering threshold value is handed down to the UE in Serving cell, described method also comprises:
Determine that the base station of Serving cell gets in the second setting duration to there is the quantity that is greater than the interference value of the strong jamming threshold value of setting in the interference value of business;
In the time that described quantity is more than or equal to the first interference number of times thresholding of setting, strong jamming indication is set to true TRUE; In the time that described quantity is less than or equal to the second interference number of times thresholding of setting, strong jamming indication is set to false FALSE;
In the time detecting that strong jamming indicates continuous set point number to be TRUE, tune up set point of cell reselection measurement triggering threshold value, and the cell reselection measurement triggering threshold value after tuning up is issued to described UE;
In the time detecting that strong jamming indicates continuous set point number to be FALSE, turn set point of cell reselection measurement triggering threshold value down, and the cell reselection measurement triggering threshold value after turning down is issued to described UE.
6. cell reselection parameters is adjusted an equipment, it is characterized in that, described equipment comprises:
The first determination module, for determining the maximum signal strength values of signal strength values of each adjacent cell that the base station of Serving cell listens to, and using this maximum signal strength values from adjacent cell as strong jamming adjacent cell;
The second determination module, meets for determining the point that the signal strength values of strong jamming adjacent cell is greater than the Serving cell hysteresis of setting with the difference of the signal strength values of Serving cell and continues the first setting duration, and is recorded in the signal strength values of this Serving cell;
Sending module, for being handed down to the UE in Serving cell using the difference of the minimum emissive power of the Serving cell reception of the described signal strength values of record and setting as cell reselection measurement triggering threshold value.
7. equipment as claimed in claim 6, is characterized in that, described the second determination module when be not less than the strong jamming adjacent cell threshold value of setting at the signal strength values of described maximum, is determined described point.
8. the equipment as described in claim 6 or 7, is characterized in that, described the second determination module, on the straight line being connected between the base station in Serving cell and the base station of described strong jamming adjacent cell, is determined described point.
9. equipment as claimed in claim 8, it is characterized in that, described the second determination module, specifically for the signal strength values PCCPCH RSCP of the broadcast channel of the broadcast channel transmission power level PCCPCHTXpower_n of the strong jamming adjacent cell that listens to according to the base station of Serving cell and the strong jamming adjacent cell that listens to, and the link load propagation model of selecting, distance described in determining between the base station of strong jamming adjacent cell and the base station of described Serving cell, described link load propagation model is to select according to the scene between Serving cell and strong jamming adjacent cell,
The described distance of utilizing the >Qhyst of formula (PCCPCHTXpower_n-Linkloss_n)-(PCCPCHTXpower_s-Linkloss_s) and determine is determined described point;
Wherein, PCCPCHTXpower_s is the broadcast channel transmission power level of Serving cell, Linkloss_n is the link loss value of signal between described point and the base station of strong jamming adjacent cell, Linkloss_s is the link loss value of signal between described point and the base station of Serving cell, and Qhyst is the Serving cell hysteresis of setting.
10. equipment as claimed in claim 6, is characterized in that, described equipment also comprises:
The 3rd determination module, for determine that the base station of Serving cell gets in the second setting duration to existing the interference value of business to be greater than the quantity of the interference value of the strong jamming threshold value of setting;
Judge module, while disturbing number of times thresholding, is set to true TRUE by strong jamming indication for be more than or equal to first of setting in described quantity; In the time that described quantity is less than or equal to the second interference number of times thresholding of setting, strong jamming indication is set to false FALSE;
Adjusting module, in the time detecting that strong jamming indicates continuous set point number to be TRUE, tunes up set point of cell reselection measurement triggering threshold value; In the time detecting that strong jamming indicates continuous set point number to be FALSE, turn set point of cell reselection measurement triggering threshold value down;
Described sending module, also for the cell reselection measurement triggering threshold value after tuning up is issued to described UE, and is issued to described UE by the cell reselection measurement triggering threshold value after turning down.
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