CN103945466A - Method and equipment for determining candidate switching cell set - Google Patents
Method and equipment for determining candidate switching cell set Download PDFInfo
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- CN103945466A CN103945466A CN201410131671.1A CN201410131671A CN103945466A CN 103945466 A CN103945466 A CN 103945466A CN 201410131671 A CN201410131671 A CN 201410131671A CN 103945466 A CN103945466 A CN 103945466A
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Abstract
The invention relates to the technical field of communication, in particular to a method and equipment for determining a candidate switching cell set. According the embodiment, the method comprises the steps that whether a terminal is currently in a cell without leading services or not is judged according to a downlink measuring result reported by the terminal; after the fact the terminal is currently in the cell without the leading services is confirmed, a neighborhood with corresponding downlink receiving electrical level values larger than a first electrical level value in the downlink measuring result is added in the candidate switching cell set; after the fact that the terminal is currently not in the cell without the leading services is confirmed, a neighborhood with corresponding downlink receiving electrical level values larger than a second electrical value in the downlink measuring result is added in the candidate switching cell set. When the terminal is currently in the cell without the leading services, the terminal can be limited to be switched to the neighborhood, and ping-pong switching can be reduced.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method and apparatus of definite handover candidate cells set.
Background technology
Along with the development of global system for mobile communications, the range of application of Small Cell base station (little base station) is more and more wider, relates to blind spot covering, enterprises covering and family's covering etc.
Introduce Small Cell base station and can absorb to a certain extent traffic, alleviate network load, therefore, in indoor deployment Small Cell base station, can reach the object that absorbs telephone traffic, Optimizing Network Resources.The in the situation that of the Scaledeployment of Small Cell base station, to there is Small Cell base station and macro base station around in Small Cell base station simultaneously, while moving in the overlapping region that the user terminal in call covers in a plurality of base stations, likely from Small Cell base station, be switched to another Small Cell base station, also likely from Small Cell base station, be switched to macro base station.
In actual scene, particularly in high-rise building scene, may there is the situation without leading Serving cell, make user terminal in call at neighboring interval pingpang handoff, have a strong impact on communication quality.
In prior art, by increasing the transmitting power of Yi Ge community, reduce without the pingpang handoff in the scene of leading Serving cell.Yet, after the transmitting power of increase Yi Ge community, will affect the covering of whole community and can produce stronger interference to other communities.
In sum, in prior art, exist by increasing the transmitting power of Yi Ge community and reduce without the pingpang handoff in the scene of leading Serving cell, can produce more strongly disturbing problem to other communities.
Summary of the invention
The embodiment of the present invention provides a kind of method and apparatus of definite handover candidate cells set, in order to solve the transmitting power of passing through increase Yi Ge community existing in prior art, reduce without the pingpang handoff in the scene of leading Serving cell, can produce more strongly disturbing problem to other communities.
The embodiment of the present invention provides a kind of method of definite handover candidate cells set, and described method comprises:
According to the down-run survey result of terminal to report, judge that described terminal is current whether in the leading Serving cell of nothing;
Current behind the leading Serving cell of nothing in definite described terminal, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to the first level value, wherein, described the first level value is to obtain according to the first default side-play amount and default minimum incoming level value;
Current not behind the leading Serving cell of nothing in definite described terminal, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to second electrical level value, wherein, described second electrical level value is to obtain according to the second default side-play amount and default minimum incoming level value;
Wherein, described the first side-play amount is greater than described the second side-play amount, and described the first level value is greater than described second electrical level value.
Adopt the scheme of the embodiment of the present invention, can be current whether in detecting without leading Serving cell to terminal, and when without leading Serving cell, larger side-play amount is set definite terminal is current, limiting terminal switches to adjacent area, minimizing pingpang handoff.And the scheme of the embodiment of the present invention does not need to adjust the transmitting power of community, thereby the covering that can not affect community can not produce extra interference to other communities yet.In addition, adopt the scheme of the embodiment of the present invention, also can be current when having leading Serving cell in definite terminal, less side-play amount is set, make terminal easily switch to adjacent area.
Alternatively, describedly judge that described terminal is current whether in without leading Serving cell, comprising:
Whether the absolute value of difference of descending incoming level value that judges the adjacent area of the current resident Serving cell of described terminal and descending incoming level value maximum, be less than the first default threshold value.
So, can be current whether in accurately judging without leading Serving cell to terminal.
Alternatively, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to the first level value, comprising:
Current in the leading Serving cell of nothing in definite described terminal, and the descending incoming level value of the current resident Serving cell of described terminal is greater than the second default threshold value, and the descending quality of reception value of described Serving cell is greater than after the 3rd default threshold value, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to the first level value.
So, can be current in without leading Serving cell in terminal, and the signal quality of Serving cell be can meet the proper communication of terminal time, and limiting terminal switches to adjacent area.
Alternatively, described method also comprises:
If the descending incoming level value of described Serving cell is not more than described the second threshold value, or the descending quality of reception value of described Serving cell is not more than described the 3rd threshold value, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to second electrical level value.
So, in the time of can not meeting the proper communication of terminal at the signal quality of Serving cell, make terminal easily switch to adjacent area, thereby avoid in time switching and causing call drop owing to failing.
Alternatively, after the set of definite handover candidate cells, also comprise:
For each adjacent area in the set of described handover candidate cells, carry out respectively:
If this adjacent area is the community of particular type,, when the difference of the descending incoming level value of this adjacent area and the current resident Serving cell of described terminal is less than the 4th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
If this adjacent area is not the community of particular type,, when the difference of the descending incoming level value of this adjacent area and described Serving cell is less than the 5th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
Wherein, described the 5th threshold value is greater than described the 4th threshold value.
So, can realize the community that terminal preferentially switches to particular type, thereby avoid terminal at the community pingpang handoff that is not particular type, and can traffic be remained on to the community of particular type as far as possible.
The embodiment of the present invention provides a kind of method of definite handover candidate cells set, and described method comprises:
According to the down-run survey result of terminal to report, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to minimum incoming level value;
For each adjacent area in the set of described handover candidate cells, carry out respectively:
If this adjacent area is the community of particular type,, when the difference of the descending incoming level value of this adjacent area and the current resident Serving cell of described terminal is less than the 4th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
If this adjacent area is not the community of particular type,, when the difference of the descending incoming level value of this adjacent area and described Serving cell is less than the 5th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
Wherein, described the 5th threshold value is greater than described the 4th threshold value.
So, can realize the community that terminal preferentially switches to particular type, thereby avoid terminal at the community pingpang handoff that is not particular type, and can traffic be remained on to the community of particular type as far as possible.
The embodiment of the present invention provides a kind of network equipment, and described equipment comprises:
Judge module, for according to the down-run survey result of terminal to report, judges that described terminal is current whether in the leading Serving cell of nothing;
Processing module, current behind the leading Serving cell of nothing for determine described terminal at described judge module, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to the first level value, wherein, described the first level value is to obtain according to the first default side-play amount and default minimum incoming level value; At described judge module, determine that described terminal is current not behind the leading Serving cell of nothing, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to second electrical level value, wherein, described second electrical level value is to obtain according to the second default side-play amount and default minimum incoming level value; Wherein, described the first side-play amount is greater than described the second side-play amount, and described the first level value is greater than described second electrical level value.
Adopt this equipment, can be current whether in detecting without leading Serving cell to terminal, and when without leading Serving cell, larger side-play amount is set definite terminal is current, limiting terminal switches to adjacent area, minimizing pingpang handoff.And owing to not needing to adjust the transmitting power of community, thereby the covering that can not affect community can not produce extra interference to other communities yet.In addition, adopt the scheme of the embodiment of the present invention, also can be current when having leading Serving cell in definite terminal, less side-play amount is set, make terminal easily switch to adjacent area.
Alternatively, described judge module specifically for:
Whether the absolute value of difference of descending incoming level value that judges the adjacent area of the current resident Serving cell of described terminal and descending incoming level value maximum, be less than the first default threshold value.
So, can be current whether in accurately judging without leading Serving cell to terminal.
Alternatively, described processing module specifically for:
At described judge module, determine that described terminal is current in the leading Serving cell of nothing, and the descending incoming level value of the current resident Serving cell of described terminal is greater than the second default threshold value, and the descending quality of reception value of described Serving cell is greater than after the 3rd default threshold value, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to the first level value.
So, can be current in without leading Serving cell in terminal, and the signal quality of Serving cell be can meet the proper communication of terminal time, and limiting terminal switches to adjacent area.
Alternatively, described processing module also for:
If the descending incoming level value of described Serving cell is not more than described the second threshold value, or the descending quality of reception value of described Serving cell is not more than described the 3rd threshold value, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to second electrical level value.
So, in the time of can not meeting the proper communication of terminal at the signal quality of Serving cell, make terminal easily switch to adjacent area, thereby avoid in time switching and causing call drop owing to failing.
Alternatively, described processing module also for:
For each adjacent area in the set of described handover candidate cells, carry out respectively:
If this adjacent area is the community of particular type,, when the difference of the descending incoming level value of this adjacent area and the current resident Serving cell of described terminal is less than the 4th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
If this adjacent area is not the community of particular type,, when the difference of the descending incoming level value of this adjacent area and described Serving cell is less than the 5th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
Wherein, described the 5th threshold value is greater than described the 4th threshold value.
So, can realize the community that terminal preferentially switches to particular type, thereby avoid terminal at the community pingpang handoff that is not particular type, and can traffic be remained on to the community of particular type as far as possible.
The embodiment of the present invention provides a kind of network equipment, and described equipment comprises:
The first processing module, for according to the down-run survey result of terminal to report, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to minimum incoming level value;
The second processing module, for carrying out respectively for each adjacent area of described handover candidate cells set:
If this adjacent area is the community of particular type,, when the difference of the descending incoming level value of this adjacent area and the current resident Serving cell of described terminal is less than the 4th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
If this adjacent area is not the community of particular type,, when the difference of the descending incoming level value of this adjacent area and described Serving cell is less than the 5th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
Wherein, described the 5th threshold value is greater than described the 4th threshold value.
So, can realize the community that terminal preferentially switches to particular type, thereby avoid terminal at the community pingpang handoff that is not particular type, and can traffic be remained on to the community of particular type as far as possible.
Accompanying drawing explanation
Fig. 1 is the step schematic diagram of determining the method for handover candidate cells set in the embodiment of the present invention one;
Fig. 2 is the step schematic diagram of determining the method for handover candidate cells set in the embodiment of the present invention two;
Fig. 3 is the particular flow sheet of determining the method for handover candidate cells set in the embodiment of the present invention two;
Fig. 4 is the structural representation of network equipment in the embodiment of the present invention three;
Fig. 5 is the structural representation of network equipment in the embodiment of the present invention four.
Embodiment
The scheme of the embodiment of the present invention is according to the down-run survey result of terminal to report, judge that terminal is current whether in the leading Serving cell of nothing, and current behind the leading Serving cell of nothing in definite terminal, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in down-run survey result is greater than to the first level value; Current not behind the leading Serving cell of nothing in definite terminal, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in down-run survey result is greater than to second electrical level value.Because the first level value is greater than second electrical level value, can in terminal, current when without leading Serving cell, limiting terminal switch to adjacent area, reduce pingpang handoff.And the scheme of the embodiment of the present invention does not need to adjust the transmitting power of community, thereby the covering that can not affect community can not produce extra interference to other communities yet.
It should be noted that, the executive agent of embodiment of the present invention scheme can be network equipment, such as Small Cell base station (comprising Femto base station, Pico base station etc.).The scheme of the embodiment of the present invention is applicable to GSM(Global System for Mobile Communications, global system for mobile communications), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, TD SDMA), WCDMA(Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) and LTE(Long Term Evolution, Long Term Evolution) system such as.
Below in conjunction with Figure of description, embodiments of the present invention is further illustrated, but the present invention is not limited to the following examples.
Embodiment mono-:
As shown in Figure 1, in the embodiment of the present invention one, determine that the method that gather handover candidate cells comprises the following steps:
Step 101: according to the down-run survey result of terminal to report, judge that terminal is current whether in the leading Serving cell of nothing; If so, go to step 102; If not, go to step 103.
Step 102: add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in down-run survey result is greater than to the first level value, and flow process finishes.
Step 103: add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in down-run survey result is greater than to second electrical level value, and flow process finishes.
In step 101, in the down-run survey result of terminal to report, comprise the descending incoming level value of each adjacent area that terminal detects.
In step 102, the first level value is to obtain according to the first default side-play amount and default minimum incoming level value.Particularly, the first level value can be the first side-play amount and minimum incoming level value sum, can be also the product of the first side-play amount and minimum incoming level value.
In step 103, second electrical level value is to obtain according to the second default side-play amount and default minimum incoming level value.Particularly, second electrical level value can be the second side-play amount and minimum incoming level value sum, can be also the product of the second side-play amount and minimum incoming level value.
Wherein, the first side-play amount is greater than the second side-play amount, and the first level value is greater than second electrical level value.
Particularly, the specific implementation of step 101 can be:
Whether the absolute value of the difference of the descending incoming level value of the Serving cell that judgement terminal is resident and the adjacent area of descending incoming level value maximum, be less than the first default threshold value; If be less than, determine that terminal is current in the leading Serving cell of nothing; If be not less than, determine that terminal is current not in the leading Serving cell of nothing.
Wherein, the adjacent area of descending incoming level value maximum is the strongest adjacent area, if the absolute value of the difference of the descending incoming level value of Yu Qiang adjacent area, Serving cell is less than the first default threshold T hreshold1, represent that terminal is current for example, in the region (the window limit in high-rise building) without leading Serving cell, now, terminal may pingpang handoff, therefore, needs limiting terminal to switch to adjacent area.If the absolute value of the difference of the descending incoming level value of Yu Qiang adjacent area, Serving cell is not less than the first default threshold T hreshold1, represent that terminal is current for example, in there being the region (in high-rise building indoor) of leading Serving cell, now, do not need limiting terminal to switch to adjacent area.
Alternatively, the specific implementation of step 101 can also be:
Whether the difference that judges the adjacent area of descending incoming level value maximum and the descending incoming level value of the inferior large adjacent area of descending incoming level value, be less than a setting threshold; If be less than, determine that terminal is current in the leading Serving cell of nothing; If be not less than, determine that terminal is current not in the leading Serving cell of nothing.
In step 102, minimum incoming level value is default value, can adjust according to systematic function, and the minimum incoming level value in embodiment of the present invention scheme is a fixed value.The value of the first default side-play amount Offset1 can arrange greatly as much as possible, for example, the value that the first side-play amount Offset1 can be set is 110dB, make determining terminal when dereliction is led Serving cell, all adjacent areas all cannot join in the set of handover candidate cells, terminal cannot switch to adjacent area, can avoid terminal generation pingpang handoff, and can reach the object that traffic is absorbed in to this community.
Particularly, the specific implementation of step 102 can be:
The cell ID of adjacent area and the corresponding relation of descending incoming level value that descending incoming level value corresponding in down-run survey result are greater than to the first level value add in the list of handover candidate cells.
In step 103, the value of the second default side-play amount Offset2 can arrange as much as possible littlely, and for example, the value that the second side-play amount Offset2 can be set is 0dB, makes determining terminal when having leading Serving cell, and terminal more easily switches to adjacent area.
Particularly, the specific implementation of step 103 can be:
The cell ID of adjacent area and the corresponding relation of descending incoming level value that descending incoming level value corresponding in down-run survey result are greater than to second electrical level value add in the list of handover candidate cells.
Preferably, when guaranteeing that signal quality in Serving cell is better, limiting terminal switches to adjacent area, can be only current in the leading Serving cell of nothing in definite terminal, and the descending incoming level value of the current resident Serving cell of terminal is greater than the second default threshold T hreshold2, and the descending quality of reception value of this Serving cell is greater than after the 3rd default threshold T hreshold3, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in down-run survey result is greater than to the first level value.
If the descending incoming level value of Serving cell is not more than the second threshold T hreshold2, or the descending quality of reception value of Serving cell is not more than the 3rd threshold T hreshold3, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in down-run survey result is greater than to second electrical level value.
Like this, just can be when the signal quality of guaranteeing Serving cell can meet the proper communication of terminal, limiting terminal switches to adjacent area, thereby fails to switch and cause call drop in time while avoiding signal quality in Serving cell can not meet the proper communication of terminal, affect user's experience.
It should be noted that, in specific implementation process, can first judge that terminal is current whether in the leading Serving cell of nothing, determining, terminal is current to be dominated behind Serving cell in nothing, whether the descending incoming level value that judges again the current resident Serving cell of terminal is greater than the second default threshold T hreshold2, and whether the descending quality of reception value of this Serving cell is greater than the 3rd default threshold T hreshold3, whether the descending incoming level value that also can first judge the current resident Serving cell of terminal is greater than the second default threshold T hreshold2, and whether the descending quality of reception value of this Serving cell is greater than the 3rd default threshold T hreshold3, and be greater than the second default threshold T hreshold2 in the descending incoming level value of determining the current resident Serving cell of terminal, and the descending quality of reception value of this Serving cell is greater than after the 3rd default threshold T hreshold3, judge that again terminal is current whether in the leading Serving cell of nothing, the scheme of the embodiment of the present invention does not limit this.
The scheme of the embodiment of the present invention judges that according to the down-run survey result of terminal to report whether terminal is in the leading Serving cell of nothing, and in definite terminal when dereliction is led Serving cell, by larger side-play amount is set, make terminal be difficult to switch to adjacent area, can reduce terminal pingpang handoff.And the scheme of the embodiment of the present invention does not need to adjust the transmitting power of community, thereby the covering that can not affect community can not produce extra interference to other communities yet.In addition, the scheme of the embodiment of the present invention can judge respectively that for different terminals this terminal, whether in without leading Serving cell, therefore, can't affect the normal handoff procedure of other-end to the adjustment of the side-play amount of a terminal.
Preferably, after determining handover candidate cells set, also can carry out respectively for each adjacent area in the set of handover candidate cells:
If this adjacent area is the community of particular type,, when the difference of the descending incoming level value of this adjacent area and the current resident Serving cell of this terminal is less than the 4th default threshold value, this adjacent area is deleted from the set of handover candidate cells; If this adjacent area is not the community of particular type,, when the difference of the descending incoming level value of Yu Gai Serving cell, this adjacent area is less than the 5th default threshold value, this adjacent area is deleted from the set of handover candidate cells.
Wherein, the 5th threshold value is greater than the 4th threshold value.
Wherein, the type of community can be determined according to the type of the base station under community.The scheme of the embodiment of the present invention can be each adjacent area cell categories sign is set, if the community of Shi little base station, an adjacent area, the cell categories that this adjacent area can be set is designated SmallCell; If an adjacent area is macrocell, the cell categories that this adjacent area can be set is designated MacroCell.In specific implementation process, network side can judge whether Yi Ge community is the community of particular type according to the corresponding relation of cell ID and cell categories sign.In the scheme of the embodiment of the present invention, the community of particular type can be the community Small Cell of little base station.
In specific implementation process, the 5th threshold value can be set than the large 5dB～10dB of the 4th threshold value.Because the 5th threshold value is greater than the 4th threshold value, therefore, terminal can preferentially switch to the community of particular type, thereby avoids terminal at the community pingpang handoff that is not particular type, and can traffic be remained on to the community of particular type as far as possible.
The community of supposing particular type is Small Cell, the community that is not particular type is macrocell, by different handoff thresholds being set respectively for macrocell and Small Cell, and the handoff threshold Threshold5 of macrocell is greater than the handoff threshold Threshold4 of Small Cell, terminal can preferentially switch to SmallCell, thereby avoid terminal at macrocell pingpang handoff, and can traffic be remained on to Small Cell as far as possible.
Preferably, after the adjacent area in the set of handover candidate cells is screened, can be sorted according to the difference of the descending incoming level value with Serving cell order from big to small in remaining adjacent area in the set of handover candidate cells, and export final handover candidate cells set.Follow-up, can to select the adjacent area of descending incoming level maximum will switch to as terminal from the handover candidate cells set sequence Target cell.
Embodiment bis-:
The present embodiment two is to belong to the method for a kind of definite handover candidate cells set of same inventive concept with embodiment mono-.
As shown in Figure 2, in the embodiment of the present invention two, determine that the method that gather handover candidate cells comprises the following steps:
Step 201: according to the down-run survey result of terminal to report, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in down-run survey result is greater than to minimum incoming level value;
Step 202: the adjacent area in the set of handover candidate cells is screened.
In step 201, in the down-run survey result of terminal to report, comprise the descending incoming level of each adjacent area that terminal detects.Minimum incoming level value is default value, can adjust according to systematic function, and the minimum incoming level value in embodiment of the present invention scheme is a fixed value.
Particularly, the specific implementation of step 201 can be:
The cell ID of adjacent area and the corresponding relation of descending incoming level value that descending incoming level value corresponding in down-run survey result are greater than to minimum incoming level value add in the list of handover candidate cells.
The specific implementation of step 202 is:
For each adjacent area in the set of handover candidate cells, carry out respectively:
If this adjacent area is the community of particular type,, when the difference of the descending incoming level value of this adjacent area and the current resident Serving cell of this terminal is less than the 4th default threshold value, this adjacent area is deleted from the set of handover candidate cells; If this adjacent area is not the community of particular type,, when the difference of the descending incoming level value of Yu Gai Serving cell, this adjacent area is less than the 5th default threshold value, this adjacent area is deleted from the set of handover candidate cells.
Wherein, the 5th threshold value is greater than the 4th threshold value.
Wherein, the type of community can be determined according to the type of the base station under community.The scheme of the embodiment of the present invention can be each adjacent area cell categories sign is set, if the community of Shi little base station, an adjacent area, the cell categories that this adjacent area can be set is designated SmallCell; If an adjacent area is macrocell, the cell categories that this adjacent area can be set is designated MacroCell.In specific implementation process, network side can judge whether Yi Ge community is the community of particular type according to the corresponding relation of cell ID and cell categories sign.In the scheme of the embodiment of the present invention, the community of particular type can be the community Small Cell of little base station.
Because the 5th threshold value is greater than the 4th threshold value, therefore, terminal can preferentially switch to the community of particular type, thereby avoids terminal at the community pingpang handoff that is not particular type, and can traffic be remained on to the community of particular type as far as possible.
The community of supposing particular type is Small Cell, the community that is not particular type is macrocell, by different handoff thresholds being set respectively for macrocell and Small Cell, and the handoff threshold Threshold5 of macrocell is greater than the handoff threshold Threshold4 of Small Cell, terminal can preferentially switch to Small Cell, thereby avoid terminal at macrocell pingpang handoff, and can traffic be remained on to Small Cell as far as possible.
Preferably, after the adjacent area in the set of handover candidate cells is screened, can be sorted according to the difference of the descending incoming level value with Serving cell order from big to small in remaining adjacent area in the set of handover candidate cells, and export final handover candidate cells set.Follow-up, can to select the adjacent area of descending incoming level maximum will switch to as terminal from the handover candidate cells set sequence Target cell.
As shown in Figure 3, for determining the particular flow sheet of the method for handover candidate cells set in the embodiment of the present invention two, comprise the following steps:
Step 301: the down-run survey result that receiving terminal reports.
Step 302: according to the down-run survey result of terminal to report, the cell ID of adjacent area and the corresponding relation of descending incoming level value that descending incoming level value corresponding in down-run survey result are greater than to minimum incoming level value add in the list of handover candidate cells.
Step 303: the descending incoming level value that reads successively an adjacent area in the list of handover candidate cells.
Step 304: the difference of calculating the descending incoming level value of this adjacent area and the descending incoming level value of Serving cell.
Step 305: judge that whether this adjacent area is Small Cell, if so, goes to step 306; Otherwise, go to step 307.
Wherein, in specific implementation process, can be manually for each adjacent area arranges cell categories sign, if the community of Shi little base station, an adjacent area, the cell categories that this adjacent area can be set is designated SmallCell; If an adjacent area is macrocell, the cell categories that this adjacent area can be set is designated MacroCell.Network side can judge whether an adjacent area is Small Cell according to the corresponding relation of cell ID and cell categories sign.
Step 306: whether the difference that judges the descending incoming level value of the current resident Serving cell of this adjacent area and terminal is less than the 4th default threshold value, if so, goes to step 308, otherwise, go to step 309.
Step 307: whether the difference that judges the descending incoming level value of the current resident Serving cell of this adjacent area and terminal is less than the 5th default threshold value, if so, goes to step 308, otherwise, go to step 309.
Step 308: the information that this adjacent area is corresponding is deleted from the list of handover candidate cells, go to step 309.
Step 309: judge whether the screening to all adjacent areas in the list of handover candidate cells, if so, gone to step 310, otherwise, go to step 303.
Step 310: by remaining adjacent area in the list of handover candidate cells, sort according to the difference of the descending incoming level value with Serving cell order from big to small.
Step 311: export final handover candidate cells list, switch triggering cell.
Embodiment tri-:
The present embodiment three is to belong to a kind of network equipment of same inventive concept with embodiment mono-, so the enforcement of embodiment tri-can, referring to the enforcement of embodiment mono-, repeat part and repeat no more.
As shown in Figure 4, described equipment comprises:
Judge module 41, for according to the down-run survey result of terminal to report, judges that described terminal is current whether in the leading Serving cell of nothing;
Processing module 42, current behind the leading Serving cell of nothing for determine described terminal at described judge module 41, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to the first level value, wherein, described the first level value is to obtain according to the first default side-play amount and default minimum incoming level value; At described judge module 41, determine that described terminal is current not behind the leading Serving cell of nothing, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to second electrical level value, wherein, described second electrical level value is to obtain according to the second default side-play amount and default minimum incoming level value; Wherein, described the first side-play amount is greater than described the second side-play amount, and described the first level value is greater than described second electrical level value.
Alternatively, described judge module 41 specifically for:
Whether the absolute value of difference of descending incoming level value that judges the adjacent area of the current resident Serving cell of described terminal and descending incoming level value maximum, be less than the first default threshold value.
Alternatively, described processing module 42 specifically for:
At described judge module 41, determine that described terminal is current in the leading Serving cell of nothing, and the descending incoming level value of the current resident Serving cell of described terminal is greater than the second default threshold value, and the descending quality of reception value of described Serving cell is greater than after the 3rd default threshold value, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to the first level value.
Alternatively, described processing module 42 also for:
If the descending incoming level value of described Serving cell is not more than described the second threshold value, or the descending quality of reception value of described Serving cell is not more than described the 3rd threshold value, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to second electrical level value.
Alternatively, described processing module 42 also for:
For each adjacent area in the set of described handover candidate cells, carry out respectively:
If this adjacent area is the community of particular type,, when the difference of the descending incoming level value of this adjacent area and the current resident Serving cell of described terminal is less than the 4th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
If this adjacent area is not the community of particular type,, when the difference of the descending incoming level value of this adjacent area and described Serving cell is less than the 5th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
Wherein, described the 5th threshold value is greater than described the 4th threshold value.
So, can realize the community that terminal preferentially switches to particular type, thereby avoid terminal at the community pingpang handoff that is not particular type, and can traffic be remained on to the community of particular type as far as possible.
Preferably, described processing module 42 also for:
Sorted according to the difference of the descending incoming level value with described Serving cell order from big to small in adjacent area in the set of described handover candidate cells.
Wherein, the network equipment in the embodiment of the present invention three can be Small Cell base station (comprising Femto base station, Pico base station etc.).
It should be noted that, in the embodiment of the present invention three, to the description of each part of network equipment, be the description to each part major function, in the embodiment of the present invention three, each part also possesses the function that realizes the method step described in embodiment mono-, meanwhile, the network equipment in the embodiment of the present invention three also has the logic module of carrying out embodiment mono-each step.
Embodiment tetra-:
The present embodiment four is to belong to a kind of network equipment of same inventive concept with embodiment bis-, so the enforcement of embodiment tetra-can, referring to the enforcement of embodiment bis-, repeat part and repeat no more.
As shown in Figure 5, described equipment comprises:
The first processing module 51, for according to the down-run survey result of terminal to report, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to minimum incoming level value;
The second processing module 52, for carrying out respectively for each adjacent area of described handover candidate cells set:
If this adjacent area is the community of particular type,, when the difference of the descending incoming level value of this adjacent area and the current resident Serving cell of described terminal is less than the 4th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
If this adjacent area is not the community of particular type,, when the difference of the descending incoming level value of this adjacent area and described Serving cell is less than the 5th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
Wherein, described the 5th threshold value is greater than described the 4th threshold value.
So, can realize the community that terminal preferentially switches to particular type, thereby avoid terminal at the community pingpang handoff that is not particular type, and can traffic be remained on to the community of particular type as far as possible.
Preferably, described the second processing module 52 also for:
Sorted according to the difference of the descending incoming level value with described Serving cell order from big to small in adjacent area in the set of described handover candidate cells.
Wherein, the network equipment in the embodiment of the present invention four can be Small Cell base station (comprising Femto base station, Pico base station etc.).
It should be noted that, in the embodiment of the present invention four, to the description of each part of network equipment, be the description to each part major function, in the embodiment of the present invention four, each part also possesses the function that realizes the method step described in embodiment bis-, meanwhile, the network equipment in the embodiment of the present invention four also has the logic module of carrying out embodiment bis-each steps.
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, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.
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 in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in 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 of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
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 appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of 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 appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of 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 all changes and the modification that are interpreted as comprising preferred embodiment and fall into 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 (12)
1. a method for definite handover candidate cells set, is characterized in that, described method comprises:
According to the down-run survey result of terminal to report, judge that described terminal is current whether in the leading Serving cell of nothing;
Current behind the leading Serving cell of nothing in definite described terminal, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to the first level value, wherein, described the first level value is to obtain according to the first default side-play amount and default minimum incoming level value;
Current not behind the leading Serving cell of nothing in definite described terminal, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to second electrical level value, wherein, described second electrical level value is to obtain according to the second default side-play amount and default minimum incoming level value;
Wherein, described the first side-play amount is greater than described the second side-play amount, and described the first level value is greater than described second electrical level value.
2. the method for claim 1, is characterized in that, describedly judges that described terminal is current whether in without leading Serving cell, comprising:
Whether the absolute value of difference of descending incoming level value that judges the adjacent area of the current resident Serving cell of described terminal and descending incoming level value maximum, be less than the first default threshold value.
3. the method for claim 1, is characterized in that, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to the first level value, comprising:
Current in the leading Serving cell of nothing in definite described terminal, and the descending incoming level value of the current resident Serving cell of described terminal is greater than the second default threshold value, and the descending quality of reception value of described Serving cell is greater than after the 3rd default threshold value, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to the first level value.
4. method as claimed in claim 3, is characterized in that, also comprises:
If the descending incoming level value of described Serving cell is not more than described the second threshold value, or the descending quality of reception value of described Serving cell is not more than described the 3rd threshold value, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to second electrical level value.
5. the method as described in as arbitrary in claim 1～4, is characterized in that, after the set of definite handover candidate cells, also comprises:
For each adjacent area in the set of described handover candidate cells, carry out respectively:
If this adjacent area is the community of particular type,, when the difference of the descending incoming level value of this adjacent area and the current resident Serving cell of described terminal is less than the 4th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
If this adjacent area is not the community of particular type,, when the difference of the descending incoming level value of this adjacent area and described Serving cell is less than the 5th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
Wherein, described the 5th threshold value is greater than described the 4th threshold value.
6. a method for definite handover candidate cells set, is characterized in that, described method comprises:
According to the down-run survey result of terminal to report, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to minimum incoming level value;
For each adjacent area in the set of described handover candidate cells, carry out respectively:
If this adjacent area is the community of particular type,, when the difference of the descending incoming level value of this adjacent area and the current resident Serving cell of described terminal is less than the 4th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
If this adjacent area is not the community of particular type,, when the difference of the descending incoming level value of this adjacent area and described Serving cell is less than the 5th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
Wherein, described the 5th threshold value is greater than described the 4th threshold value.
7. a network equipment, is characterized in that, described equipment comprises:
Judge module, for according to the down-run survey result of terminal to report, judges that described terminal is current whether in the leading Serving cell of nothing;
Processing module, current behind the leading Serving cell of nothing for determine described terminal at described judge module, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to the first level value, wherein, described the first level value is to obtain according to the first default side-play amount and default minimum incoming level value; At described judge module, determine that described terminal is current not behind the leading Serving cell of nothing, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to second electrical level value, wherein, described second electrical level value is to obtain according to the second default side-play amount and default minimum incoming level value; Wherein, described the first side-play amount is greater than described the second side-play amount, and described the first level value is greater than described second electrical level value.
8. equipment as claimed in claim 7, is characterized in that, described judge module specifically for:
Whether the absolute value of difference of descending incoming level value that judges the adjacent area of the current resident Serving cell of described terminal and descending incoming level value maximum, be less than the first default threshold value.
9. equipment as claimed in claim 7, is characterized in that, described processing module specifically for:
At described judge module, determine that described terminal is current in the leading Serving cell of nothing, and the descending incoming level value of the current resident Serving cell of described terminal is greater than the second default threshold value, and the descending quality of reception value of described Serving cell is greater than after the 3rd default threshold value, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to the first level value.
10. equipment as claimed in claim 9, is characterized in that, described processing module also for:
If the descending incoming level value of described Serving cell is not more than described the second threshold value, or the descending quality of reception value of described Serving cell is not more than described the 3rd threshold value, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to second electrical level value.
11. equipment as described in as arbitrary in claim 7～10, is characterized in that, described processing module also for:
For each adjacent area in the set of described handover candidate cells, carry out respectively:
If this adjacent area is the community of particular type,, when the difference of the descending incoming level value of this adjacent area and the current resident Serving cell of described terminal is less than the 4th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
If this adjacent area is not the community of particular type,, when the difference of the descending incoming level value of this adjacent area and described Serving cell is less than the 5th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
Wherein, described the 5th threshold value is greater than described the 4th threshold value.
12. 1 kinds of network equipments, is characterized in that, described equipment comprises:
The first processing module, for according to the down-run survey result of terminal to report, add in the set of handover candidate cells the adjacent area that descending incoming level value corresponding in described down-run survey result is greater than to minimum incoming level value;
The second processing module, for carrying out respectively for each adjacent area of described handover candidate cells set:
If this adjacent area is the community of particular type,, when the difference of the descending incoming level value of this adjacent area and the current resident Serving cell of described terminal is less than the 4th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
If this adjacent area is not the community of particular type,, when the difference of the descending incoming level value of this adjacent area and described Serving cell is less than the 5th default threshold value, this adjacent area is deleted from the set of handover candidate cells;
Wherein, described the 5th threshold value is greater than described the 4th threshold value.
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| CN103945466B (en) | 2018-09-28 |
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Address after: 510663 No. 10 Shenzhou Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee after: Jingxin Network System Co.,Ltd. Address before: 510663 No. 10 Shenzhou Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee before: COMBA TELECOM SYSTEMS (CHINA) Ltd. |
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