CN102869053B - For the method and apparatus finding small-cell in heterogeneous communications network - Google Patents
For the method and apparatus finding small-cell in heterogeneous communications network Download PDFInfo
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- CN102869053B CN102869053B CN201110190014.0A CN201110190014A CN102869053B CN 102869053 B CN102869053 B CN 102869053B CN 201110190014 A CN201110190014 A CN 201110190014A CN 102869053 B CN102869053 B CN 102869053B
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- 230000011664 signaling Effects 0.000 claims abstract description 49
- 238000005259 measurement Methods 0.000 claims description 14
- 230000001960 triggered Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 9
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- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The invention provides a kind of scheme finding/identify small-cell in heterogeneous communications network, macro base station position range information based on small-cell each in macrocell and the positional information of estimated subscriber equipment, judge that subscriber equipment is the most close to some or multiple small-cell, if, then send dedicated signaling to subscriber equipment, subscriber equipment triggers search based on this dedicated signaling, to periodically search for this one or more small-cells.Present invention also offers the another kind of scheme finding small-cell, the position range information in subscriber equipment warning based on each small-cell broadcasted by macro base station received region and the positional information of this estimated subscriber equipment, judge that this subscriber equipment is the most close to some or multiple small-cell, if, then trigger search, to periodically search for this one or more small-cells.The present invention can efficiently find/identify the small-cell in heterogeneous communications network in the case of the power consumption saving subscriber equipment.
Description
Technical field
The application relates to heterogeneous communications network (HetNet), particularly relates to heterogeneous communications
For the method and apparatus finding small-cell in network.
Background technology
The discovery of existing closed user group (closed subscriber group, CGS) community/
Identifying schemes is based on image processor function (autonomous search function, ASF)
And close to this mechanism realization of instruction (proximity indication), its important mesh
One of mark is the power consumption reducing subscriber equipment.In this scenario, user equipment side storage has one
Open white list (white list), this white list includes Finite Number associated there
The cell ID (cell ID) of Liang CGS community, additionally, also storage has in subscriber equipment
The information of the CGS community of limited quantity associated there, such as position range information, nothing
Line footprint (radio fingerprint) information etc..Subscriber equipment is associated therewith according to stored
The position range information of the CGS community of the limited quantity of connection and this estimated subscriber equipment
Positional information etc., determine that whether this subscriber equipment is close on its white list or many
Individual CGS community, if it is, trigger search, to periodically search on white list
All CGS communities.In search procedure, its measurement on white list is arrived by subscriber equipment
The community that signal intensity is the strongest is defined as target CGS community, and sends one close to being indicated to
Macro base station, is used for triggering this macro base station and switches over preparation, and wherein this includes close to instruction
The cell ID of target CSG cell.
Existing CGS community discovery/recognition methods be based on subscriber equipment only with limited quantity
CGS community the fact that be associated.Therefore, subscriber equipment can be remembered associated with it
The information of CGS community, such as positional information, wireless footprint information etc..But, for
For public picocell (public pico cell), due to its substantial amounts, subscriber equipment
Can not store the information of the public picocell of all these, therefore, existing CGS is little
District finds scheme the discovery/identification of inapplicable public picocell.
At present, the discovery/identification of public picocell is merely by exhaustive search
(exhaustive search) mode realizes, and which results in the power consumption of higher subscriber equipment.
Accordingly, it is desirable to provide a kind of scheme that can solve the problem that this technical problem.
Summary of the invention
For the problems referred to above, in a first aspect of the present invention, it is provided that a kind of logical at heterogeneous
The method finding small-cell for assisting user equipment in the macro base station of communication network, its feature exists
In, said method comprising the steps of: a. is based on owning in the described macrocell stored
The position range information of small-cell and the positional information of estimated described subscriber equipment, sentence
Disconnected described subscriber equipment is the most close to a region including one or more small-cell；
If the most described subscriber equipment is close to described region, then send dedicated signaling to described user
Equipment, be used for informing described subscriber equipment its close to described region, wherein said special letter
Order includes the cell ID of the one or more small-cell in described region；C. receive
From the confirmation instruction switching over preparation for triggering this macro base station of described subscriber equipment,
And switching over preparation based on described confirmation instruction, wherein said confirmation instruction includes that target is little
The cell ID of community, described target small-cell is the one or more in described region
The small-cell that signal intensity that subscriber equipment measurement described in small-cell arrives is the strongest.
And provide a kind of slight for finding in the subscriber equipment of heterogeneous communications network
The method in district, it is characterised in that said method comprising the steps of: A. receives from described
Being used for of macro base station informs this subscriber equipment, and it includes one or more small-cell close to one
The dedicated signaling in region, wherein said dedicated signaling include in described region or
The cell ID of multiple small-cells；B. based on described dedicated signaling, search is triggered, with the cycle
Property ground search for the one or more small-cell in described region；C. send and confirm instruction extremely
Described macro base station, is used for triggering described macro base station and switches over preparation, and wherein said confirmation refers to
Show that the cell ID including target small-cell, described target small-cell are in described region
The strongest slight of signal intensity that in the one or more small-cell, this subscriber equipment is measured
District.
In a second aspect of the present invention, it is provided that a kind of macro base station at heterogeneous communications network
In for assisting user equipment find small-cell method, it is characterised in that described user sets
Standby storage has cell ID and the position range information of the small-cell of all frequent access, described
Method comprises the following steps, and: m. is based on all small-cells in the described macrocell stored
Position range information and the positional information of estimated described subscriber equipment, it is judged that described use
Family equipment is the most close to a region including one or more small-cell；If it is the most described
Subscriber equipment close to described region, then judges that the one or more in described region is little
Whether community all belongs to the small-cell that described subscriber equipment frequently accesses；O. if it is not, then
Send dedicated signaling to described subscriber equipment, be used for informing described subscriber equipment its close to institute
Stating region, wherein said dedicated signaling includes in described region except described subscriber equipment frequency
The cell ID of the one or more non-frequent access small-cell outside the small-cell of numerous access；
P. the confirmation switching over preparation for triggering this macro base station from described subscriber equipment is received
Instruction, and switch over preparation based on described confirmation instruction, wherein said confirmation instruction includes
The cell ID of target small-cell, described target small-cell is the one in described region
Or the small-cell that signal intensity that described in multiple small-cell, subscriber equipment measurement is arrived is the strongest.
And provide a kind of slight for finding in the subscriber equipment of heterogeneous communications network
The method in district, it is characterised in that described subscriber equipment storage has the slight of all frequent access
The cell ID in district and position range information, said method comprising the steps of: M. based on
The position range information of the small-cell of the described frequent access stored and this estimated use
The positional information of family equipment, it is judged that whether this subscriber equipment is close to one or more frequent access
Small-cell；If N. this subscriber equipment close to the one or more frequently access little
Community, then trigger search, to periodically search for the small-cell of described all frequent access；
O. send and confirm that instruction, to described macro base station, is used for triggering described macro base station and switches over preparation,
Wherein said confirmation instruction includes the cell ID of target small-cell, described target small-cell
The signal intensity measured for this subscriber equipment in the small-cell of described all frequent access is the strongest
Small-cell.
Optionally, further comprising the steps of before described step O: to receive from described grand base
Stand for inform this subscriber equipment its close to a district including one or more small-cell
The dedicated signaling in territory, wherein said dedicated signaling includes in described region except described user
The community of the one or more non-frequent access small-cell outside the small-cell that equipment frequently accesses
Mark；Based on described dedicated signaling, trigger search, to periodically search in described region
The one or more non-frequent access small-cell；Wherein said step O includes: send
Confirm that instruction, to described macro base station, is used for triggering described macro base station and switches over preparation, wherein
Described confirmation instruction includes the cell ID of target small-cell, and described target small-cell is institute
State the one or more the non-frequent visit in the small-cell of all frequent access and described region
Ask the small-cell that signal intensity that in small-cell, this subscriber equipment is measured is the strongest.
In a third aspect of the present invention, it is provided that a kind of user at heterogeneous communications network sets
For the method finding small-cell in Bei, it is characterised in that said method comprising the steps of:
I. warning position range information in regions based on acquired all small-cells and estimated
The positional information of this subscriber equipment, it is judged that this subscriber equipment includes one close to one the most
Individual or the region of multiple small-cell, the coverage in the warning region of wherein said small-cell is big
In the normal coverage areas equal to described small-cell；If ii. this subscriber equipment is close to described
Region, then trigger search, to periodically search for the one or more in described region
Small-cell；Iii. send and confirm that instruction, to macro base station, is used for triggering described macro base station and cuts
Changing preparation, wherein said confirmation instruction includes the cell ID of target small-cell, described mesh
Mark small-cell is that in the one or more small-cell in described region, this subscriber equipment is measured
The small-cell that the signal intensity that arrives is the strongest.
And provide a kind of in the macro base station of heterogeneous communications network for assisting user to set
The method of the existing small-cell of preparation, it is characterised in that said method comprising the steps of: I. is wide
The position range in the warning region of all small-cells having turned in broadcasting this macro base station coverage
Information, the coverage in the warning region of wherein said small-cell is more than or equal to described small-cell
Normal coverage areas；II. entering for triggering this macro base station from described subscriber equipment is received
The confirmation instruction that row switching prepares, and switch over preparation, wherein based on described confirmation instruction
Described confirmation instruction includes the cell ID of target small-cell, and described target small-cell is described
The signal intensity that described in the one or more small-cell in region, subscriber equipment measurement is arrived
The strongest small-cell.
In a fourth aspect of the present invention, it is provided that a kind of user at heterogeneous communications network sets
For the method finding small-cell in Bei, it is characterised in that said method comprising the steps of:
X. all small-cells having turned in this macro base station coverage broadcasted by macro base station are received
The position range information in warning region, the coverage in the warning region of wherein said small-cell
Normal coverage areas more than or equal to described small-cell；Y. all open based on received
The position range information in the warning region of the small-cell opened, triggers search, periodically to search
All small-cells having turned in Suo Suoshu macro base station coverage.
It should be noted that small-cell (small cell) herein includes but not limited to: micro-
Microcell (pico cell), millimicro community (femto cell).
By application technical scheme, it is possible in the feelings of the power consumption saving subscriber equipment
Under condition, efficiently find/identify the small-cell in heterogeneous communications network.On additionally,
State the technical scheme technical scheme compared to above-mentioned first aspect of second aspect, additionally it is possible to
Save the expense of signaling to a certain extent.
Additionally, the present invention is in one embodiment, it is provided that a kind of at heterogeneous communications network
Macro base station in for assisting user equipment find small-cell device, it is characterised in that institute
State device to include: the first judgment means, for based on the institute in the described macrocell stored
There are position range information and the positional information of estimated described subscriber equipment of small-cell,
Judge that described subscriber equipment is the most close to a region including one or more small-cell；
First dispensing device, if for described subscriber equipment close to described region, then sends specially
By signaling to described subscriber equipment, be used for informing described subscriber equipment its close to described region,
Wherein said dedicated signaling includes the little of the one or more small-cell in described region
District identifies；First receiving device, for receive from described subscriber equipment be used for trigger this
Macro base station switches over the confirmation instruction of preparation, and switches over standard based on described confirmation instruction
Standby, wherein said confirmation instruction includes the cell ID of target small-cell, and described target is slight
District is that described in the one or more small-cell in described region, subscriber equipment measurement is arrived
The small-cell that signal intensity is the strongest.
The present invention is in one embodiment, it is provided that a kind of user at heterogeneous communications network
For finding the device of small-cell in equipment, it is characterised in that described device includes: second
Receive device, for receive from described macro base station be used for inform this subscriber equipment it connect
The dedicated signaling in a nearly region including one or more small-cell, wherein said special letter
Order includes the cell ID of the one or more small-cells in described region；First search dress
Put, for based on described dedicated signaling, trigger search, to periodically search for described region
In the one or more small-cell；Second dispensing device, is used for sending confirmation instruction extremely
Described macro base station, is used for triggering described macro base station and switches over preparation, and wherein said confirmation refers to
Show that the cell ID including target small-cell, described target small-cell are in described region
The strongest slight of signal intensity that in the one or more small-cell, this subscriber equipment is measured
District.
The present invention is in another embodiment, it is provided that a kind of grand at heterogeneous communications network
Base station finds the device of small-cell for assisting user equipment, it is characterised in that described use
Family equipment storage has cell ID and the position range information of the small-cell of all frequent access,
Described device includes: the second judgment means, for based in the described macrocell stored
The position range information of all small-cells and the position letter of estimated described subscriber equipment
Breath, it is judged that described subscriber equipment is the most close to a district including one or more small-cell
Territory；3rd judgment means, if for described subscriber equipment close to described region, then sentenced
Whether the one or more small-cell in disconnected described region all belongs to described subscriber equipment
The small-cell frequently accessed；3rd dispensing device, for if it is not, then send dedicated signaling
To described subscriber equipment, be used for informing described subscriber equipment its close to described region, wherein
Described dedicated signaling include in described region except described subscriber equipment frequently access slight
The cell ID of the one or more non-frequent access small-cell outside district；3rd receives device,
For receive from described subscriber equipment be used for trigger this macro base station switch over preparation really
Recognize instruction, and switch over preparation, wherein said confirmation instruction bag based on described confirmation instruction
Including the cell ID of target small-cell, described target small-cell is described in described region
The small-cell that signal intensity that described in individual or multiple small-cell, subscriber equipment measurement is arrived is the strongest.
The present invention is in another embodiment, it is provided that a kind of use at heterogeneous communications network
For finding the device of small-cell in the equipment of family, it is characterised in that described subscriber equipment stores
There are cell ID and the position range information of the small-cell of all frequent access, described device bag
Include: the 4th judgment means, for the position of small-cell based on the described frequent access stored
Put the positional information of range information and this estimated subscriber equipment, it is judged that this subscriber equipment
Whether close to the small-cell of one or more frequent access；Second searcher, if for
The small-cell that this subscriber equipment has frequently accessed close to the one or more, then trigger search,
To periodically search for the small-cell of described all frequent access；4th dispensing device, is used for
Send and confirm that instruction, to described macro base station, is used for triggering described macro base station and switches over preparation,
Wherein said confirmation instruction includes the cell ID of target small-cell, described target small-cell
The signal intensity measured for this subscriber equipment in the small-cell of described all frequent access is the strongest
Small-cell.
The present invention is in another embodiment, it is provided that a kind of use at heterogeneous communications network
For finding the device of small-cell in the equipment of family, it is characterised in that described device includes: the
Five judgment means, for the position range in warning regions based on acquired all small-cells
Information and the positional information of this estimated subscriber equipment, it is judged that this subscriber equipment is the most
Close to a region including one or more small-cell, the alert zone of wherein said small-cell
The coverage in territory is more than or equal to the normal coverage areas of described small-cell；3rd searcher,
If for this subscriber equipment close to described region, then triggering search, periodically to search
The one or more small-cell in Suo Suoshu region；5th dispensing device, is used for sending
Confirm that instruction, to macro base station, is used for triggering described macro base station and switches over preparation, wherein said
Confirming that instruction includes the cell ID of target small-cell, described target small-cell is described district
The signal intensity that in the one or more small-cell in territory, this subscriber equipment is measured is the strongest
Small-cell.
The present invention is in another embodiment, it is provided that a kind of grand at heterogeneous communications network
Base station finds the device of small-cell for assisting user equipment, it is characterised in that described dress
Put and include: broadcaster, in broadcast this macro base station coverage all have turned on little
The position range information in the warning region of community, covering of the warning region of wherein said small-cell
Lid scope is more than or equal to the normal coverage areas of described small-cell；4th receives device, is used for
Receive the confirmation switching over preparation for triggering this macro base station from described subscriber equipment to refer to
Showing, and switch over preparation based on described confirmation instruction, wherein said confirmation instruction includes mesh
Mark small-cell cell ID, described target small-cell be the one in described region or
The small-cell that signal intensity that described in multiple small-cells, subscriber equipment measurement is arrived is the strongest.
The present invention is In yet another embodiment, it is provided that a kind of use at heterogeneous communications network
For finding the device of small-cell in the equipment of family, it is characterised in that described device includes: the
Four receive devices, in receiving this macro base station coverage of being broadcasted by macro base station all
The position range information in the warning region of the small-cell opened, the warning of wherein said small-cell
The coverage in region is more than or equal to the normal coverage areas of described small-cell；4th search dress
Put, for the position model in warning regions based on received all small-cells having turned on
Enclose information, trigger search, with in periodically searching for described macro base station coverage all
The small-cell opened.
Various aspects of the invention are more clear by the explanation by embodiment in detail below
Clear.
Accompanying drawing explanation
By reading retouching in detail with reference to made non-limiting example is made of the following drawings
Stating, the above-mentioned and other feature of the present invention will become more apparent:
Fig. 1 is the heterogeneous communications network of network topology according to one embodiment of the present of invention
Figure；
Fig. 2 shows leading at heterogeneous of an embodiment according to the first aspect of the invention
For finding the method flow diagram of small-cell in communication network；
Fig. 3 shows leading at heterogeneous of an embodiment according to the second aspect of the invention
For finding the method flow diagram of small-cell in communication network；
Fig. 4 shows leading at heterogeneous of an embodiment according to the third aspect of the invention we
For finding the method flow diagram of small-cell in communication network；
Fig. 5 is that the heterogeneous communications network of network according to an alternative embodiment of the invention is opened up
Flutter figure；
Fig. 6 shows leading at heterogeneous of an embodiment according to the fourth aspect of the invention
For finding the method flow diagram of small-cell in communication network.
Accompanying drawing mark same or like in accompanying drawing represents same or like parts.
Detailed description of the invention
It should be noted that small-cell (small cell) herein includes but not limited to: micro-
Microcell (pico cell), millimicro community (femto cell).
Describe the present invention below with reference to accompanying drawing.
Fig. 1 shows heterogeneous communications network of network according to an embodiment of the invention
Topological diagram.Big ellipse in figure is macrocell MC, that is, macro base station (macro eNodeB)
The coverage of 10.Macrocell MC is deployed with multiple picocell (pico cell), example
As, little oval the picocell PC1, picocell PC2, picocell PC3 shown in figure.
Also show subscriber equipment 20 in figure, it moves in macrocell MC, thus at macrocell
And switch between each picocell.
It should be noted that in FIG, although illustrate only 3 in macrocell MC
Picocell PC1, PC2 and PC3, but it will appreciated by the skilled person that
In actual applications, the quantity of the picocell in macrocell MC is not limited to 3, this
Outward, macrocell MC can also include multiple millimicro community.Another it should be noted that
In actual applications, the number of the subscriber equipment in macrocell MC is not limited to 1.Cause
This, Fig. 1 is merely illustrative target, is not intended that limiting the scope of the invention.
Fig. 2 shows leading at heterogeneous of an embodiment according to the first aspect of the invention
For finding the method flow diagram of small-cell in communication network.Referring to Fig. 2 and combine Fig. 1
A first aspect of the present invention being used for finding, the method for small-cell is described.
In the present embodiment, in macro base station 10, storage has in macrocell MC all of the least
The cell ID of district PC1, PC2 and PC3, position range information etc..Additionally, macro base station
10 have locating user devices 20, namely estimate the ability of the positional information of subscriber equipment 10.
With reference to Fig. 2, first, in the step s 21, macro base station 10 is grand little based on stored
The position range information of all picocell PC1, PC2 and PC3 and being estimated in district MC
The positional information of the subscriber equipment 20 of meter, it is judged that subscriber equipment 20 is the most close to a bag
Including the region of one or more picocell, such as, macro base station 10 can periodically carry out
This judgement.
If it is judged that display subscriber equipment 20 is close to such a region, such as user
Equipment 20 has been moved into close to picocell PC1 and the region at PC2 place, then in step
In S22, macro base station 10 sends dedicated signaling (dedicated signaling) to subscriber equipment
20, for inform subscriber equipment 20 its close to picocell PC1 and the district at PC2 place
Territory.Wherein this dedicated signaling includes the cell ID of picocell PC1 and PC2.
Then, in step S23, it is special that subscriber equipment 20 receives from macro base station 10
Signaling, and the community mark of picocell PC1 and PC2 included based on this dedicated signaling
Know, trigger search, to periodically search for picocell PC1 and PC2.
It is to say, subscriber equipment 20 is periodically measured from picocell PC1 and PC2
The intensity of signal, such as carry out Reference Signal Received Power (reference signal
Receiving power, RSRP) measure, and by that the strongest for signal intensity picocell,
Such as picocell PC1 is as the to be switched slight small-cell of target.
Then, in step s 24, subscriber equipment 20 sends and confirms instruction (acknowledge
Indication) to macro base station 10, it is used for triggering macro base station 10 and switches over preparation.Wherein should
Confirm that instruction includes target small-cell, namely the cell ID of picocell PC1.
Then, in step s 25, macro base station 10 receives the confirmation from subscriber equipment 20
Instruction, and switch over preparation based on this confirmation instruction.
Fig. 3 shows leading at heterogeneous of an embodiment according to the second aspect of the invention
For finding the method flow diagram of small-cell in communication network.Referring to Fig. 3 and combine Fig. 1
A second aspect of the present invention being used for finding, the method for small-cell is described.
In the present embodiment, in subscriber equipment 20 side, in subscriber equipment 20, storage has all
The cell ID of its picocell frequently accessed and position range information etc..Such as, slightly
Community PC1 and picocell PC3 is the picocell that subscriber equipment 20 frequently accesses, because of
This, the information such as the cell ID of picocell PC1 and PC3 and position range information is stored
In subscriber equipment 20.Additionally, subscriber equipment 20 has the positional information estimating their own
Ability.
In macro base station 10 side, in macro base station 10 storage have in macrocell MC all of slightly
The cell ID of community PC1, PC2 and PC3, position range information etc., and know use
The cell ID of the picocell that family equipment 20 frequently accesses.Additionally, macro base station 10 has
Locating user devices 20, namely estimate the ability of the positional information of subscriber equipment 10.
First, in step S31, macro base station 10 is based in the macrocell MC stored
The position range information of all picocell PC1, PC2 and PC3 and estimated user
The positional information of equipment 20, it is judged that subscriber equipment 20 the most close to one include one or
The region of multiple picocells, such as, macro base station 10 can periodically carry out this judgement.
If it is judged that display subscriber equipment 20 is close to such a region, such as user
Equipment 10 has been moved into close to picocell PC1 and the region at PC2 place, then in step
In S32, macro base station 10 judges that picocell PC1 and PC2 in this region the most all belongs to
In the picocell that subscriber equipment 20 frequently accesses.
Meanwhile, have been moved into close to picocell PC1 and PC2 due to subscriber equipment 20
The region at place, subscriber equipment 20 according to its picocells frequently accessed all stored,
Namely the position range information of picocell PC1 and PC3 and this estimated subscriber equipment
The positional information of 20, it is judged that the picocell that this subscriber equipment 20 has frequently accessed close to it
PC1, the most now, in step S32 ' in, subscriber equipment 20 triggers search, with periodically
Search for its picocells frequently accessed all, namely picocell PC1 and PC3.
And in macro base station 10 side, the most immediately above-mentioned steps S32, in the present embodiment, by
It is the least that picocell PC2 in this region is not belonging to that subscriber equipment 20 frequently accesses
District, therefore, in step S33, macro base station 10 sends dedicated signaling to subscriber equipment 20,
This dedicated signaling is only included in this region except subscriber equipment 20 frequently access the least
The cell ID of the non-frequent access picocell PC2 outside district PC1, say, that grand
Base station 10 only will belong to the picocell of non-frequent access in this region by dedicated signaling
Cell ID sends to subscriber equipment 20.
Then, in step S34, it is special that subscriber equipment 20 receives from macro base station 10
Signaling, and the cell ID of the picocell PC2 included based on this dedicated signaling, trigger
Search, to periodically search for picocell PC2.
Triggering based on above-mentioned twice search, subscriber equipment 20 simultaneously to picocell PC2 with
And all its picocells frequently accessed scans for, say, that subscriber equipment 20 weeks
Phase property ground is measured from picocell PC2 and its picocells frequently accessed all, namely
The intensity of the signal of picocell PC1 and PC3, such as, carry out Reference Signal Received Power
(reference signal receiving power, RSRP) measures, and signal intensity is the strongest
That picocell, such as picocell PC1 is as the to be switched slight small-cell of target.
Then, in step s 35, subscriber equipment 20 sends and confirms instruction (acknowledge
Indication) to macro base station 10, it is used for triggering macro base station 10 and switches over preparation.Wherein should
Confirm that instruction includes target small-cell, namely the cell ID of picocell PC1.
Then, in step S36, macro base station 10 receives the confirmation from subscriber equipment 20
Instruction, and switch over preparation based on this confirmation instruction.
It should be noted that in the present embodiment, if in the close region of subscriber equipment 20
Including one or more picocells all belong to its picocell frequently accessed, then,
Macro base station 10 will not send dedicated signaling, and subscriber equipment 20 triggers search the most automatically, with
Periodically search for its picocells frequently accessed all.
Fig. 4 shows leading at heterogeneous of an embodiment according to the third aspect of the invention we
For finding the method flow diagram of small-cell in communication network.Referring to Fig. 4 and combine Fig. 5
A third aspect of the present invention being used for finding, the method for small-cell is described.
In the present embodiment, in subscriber equipment 20 side, subscriber equipment 20 has estimates that it is certainly
The ability of oneself positional information.
Additionally, due to the mobility of subscriber equipment 20 is generally very fast, therefore, at the present embodiment
In, each picocell is set the warning region (alert zone) of picocell, preferably
, as it is shown in figure 5, the coverage of the warning region AZ of picocell, namely Fig. 5
In dotted line in region more than the normal coverage areas of picocell itself so that use
Family equipment can the most successfully be switched to this picocell when close to a certain picocell.
Certainly, the coverage in the warning region of picocell can also be equal to picocell itself
Normal coverage areas.
In macro base station 10 side, in macro base station 10 storage have in macrocell MC all of slightly
The position range information etc. in the warning region of the cell ID of community and these picocells.
Macro base station 10 can broadcast the warning region of each picocell having turned in macrocell MC
Position range information, such as, macro base station 10 can periodically be broadcasted, or whenever
New picocell is had to broadcast after opening.
With reference to Fig. 4, first, in step S41, macro base station 10 broadcasts this macro base station 10
The position range information in the warning region of all picocells having turned on, example in coverage
As, the position range information in the warning region of picocell PC1, PC2 and PC3.
Then, in step S42, subscriber equipment 20 is based on acquired all picocells
The warning position range information in region and the position letter of this estimated subscriber equipment 20
Breath, it is judged that this subscriber equipment 20 includes one or more picocell close to one the most
Region.
This subscriber equipment of judgment result displays 20 is close to such a region, such as this user
Equipment 20 has been moved into close to picocell PC1 and the region at PC2 place, then in step
In S43, subscriber equipment 20 triggers search, to periodically search for picocell PC1 and PC2.
It is to say, subscriber equipment 20 is periodically measured from picocell PC1 and PC2
The intensity of signal, such as carry out Reference Signal Received Power (reference signal
Receiving power, RSRP) measure, and by that the strongest for signal intensity picocell,
Such as picocell PC1 is as to be switched target picocell.
Then, in step S44, subscriber equipment 20 sends and confirms to indicate to macro base station 10,
Preparation is switched over for triggering macro base station 10.Wherein this confirmation instruction includes that target is slight
Community, namely the cell ID of picocell PC1.
Then, in step S45, macro base station 10 receives the confirmation from subscriber equipment 20
Instruction, and switch over preparation based on this confirmation instruction.
It should be noted that In an alternative embodiment, it is also possible to the least by each
The position range information in the warning region of district oneself broadcast picocell.
Fig. 6 shows leading at heterogeneous of an embodiment according to the fourth aspect of the invention
For finding the method flow diagram of small-cell in communication network.Referring to Fig. 6 and combine Fig. 5
A fourth aspect of the present invention being used for finding, the method for small-cell is described.
In the present embodiment, subscriber equipment 20 does not possess the ability estimating oneself positional information,
Or can accurately not estimate the positional information of oneself, or can not be in the way of saving power
Estimate the positional information of oneself, therefore, it is impossible to use the embodiment phase with the above-mentioned third aspect
Same mode carries out the discovery/identification of picocell.
In the present embodiment, with reference to Fig. 6, first, in step S61, macro base station 10 is wide
The position in the warning region of all picocells having turned in broadcasting this macro base station 10 coverage
Range information, such as, the position model in the warning region of picocell PC1, PC2 and PC3
Enclose information.
Then, in step S62, subscriber equipment 20 receives by being somebody's turn to do that macro base station 10 is broadcasted
The position range in the warning region of all picocells having turned in macro base station 10 coverage
Information.
Then, in step S63, subscriber equipment 20 all has turned on based on received
Picocell warning region position range information, trigger search, periodically to search
All picocells having turned in rope macro base station 10 coverage.
In the present embodiment, only the micro-of macro base station broadcast is being received due to subscriber equipment 20
After the position range information in the warning region of Microcell, just can trigger search, say, that
It is not deployed with small-cell, such as picocell and millimicro community when subscriber equipment 20 enters one
Macrocell, then due to the macro base station in this macrocell will not broadcast warning regional location model
Enclosing information, therefore subscriber equipment 20 also will not trigger search, thus saves to a certain extent
The power consumption of subscriber equipment 20.
It is obvious to a person skilled in the art that the invention is not restricted to above-mentioned exemplary enforcement
The details of example, and without departing from the spirit or essential characteristics of the present invention, it is possible to
Realize the present invention in other specific forms.Therefore, no matter from the point of view of which point, all should be by
Embodiment regards exemplary as, and is nonrestrictive, should be by claim
Any reference is considered as limiting involved claim.Additionally, it will be evident that " including "
One word is not excluded for other elements or step, and " one " word before element is not excluded for including " many
Individual " this element.In claim to a product, multiple elements of statement can also be passed through by an element
Software or hardware realize.The first, the second word such as grade is for representing title, and not table
Show any specific order.
Claims (8)
1. one kind finds little for assisting user equipment in the macro base station of heterogeneous communications network
The method of community, it is characterised in that said method comprising the steps of:
A. position range information based on all small-cells in the macrocell stored and institute
The positional information of the described subscriber equipment estimated, it is judged that described subscriber equipment is the most close to one
The individual region including one or more small-cell；
If the most described subscriber equipment is close to described region, then send dedicated signaling to described
Subscriber equipment, be used for informing described subscriber equipment its close to described region, wherein said specially
The cell ID of the one or more small-cell in described region is included by signaling；
C. receive and switch over preparation from described subscriber equipment for triggering described macro base station
Confirmation instruction, and switch over preparation based on described confirmation instruction, wherein said confirmation refers to
Show that the cell ID including target small-cell, described target small-cell are the institute in described region
State the strongest slight of signal intensity that described in one or more small-cell, subscriber equipment measurement is arrived
District.
2. the side being used for finding small-cell in the subscriber equipment of heterogeneous communications network
Method, it is characterised in that said method comprising the steps of:
A. receive from macro base station be used for inform described subscriber equipment it include close to one
The dedicated signaling in the region of one or more small-cells, wherein said dedicated signaling includes institute
State the cell ID of one or more small-cells in region, and wherein by described macro base station
Position range information based on all small-cells in the macrocell stored and estimated
The positional information of described subscriber equipment determines that described subscriber equipment is the most close to described district
Territory；
B. based on described dedicated signaling, search is triggered, to periodically search in described region
The one or more small-cell；
C. send and confirm that instruction, to described macro base station, is used for triggering described macro base station and switches over
Preparing, wherein said confirmation instruction includes the cell ID of target small-cell, described target
Small-cell is that subscriber equipment described in the one or more small-cell in described region is measured
The small-cell that the signal intensity that arrives is the strongest.
3. one kind finds little for assisting user equipment in the macro base station of heterogeneous communications network
The method of community, it is characterised in that described subscriber equipment storage has the little of all frequent access
The cell ID of community and position range information, said method comprising the steps of:
M. position range information based on all small-cells in the macrocell stored and institute
The positional information of the described subscriber equipment estimated, it is judged that described subscriber equipment is the most close to one
The individual region including one or more small-cell；
If the most described subscriber equipment is close to described region, then judge the institute in described region
That states whether one or more small-cell all belong to that described subscriber equipment frequently accesses is slight
District；
O. if it is not, then send dedicated signaling extremely described subscriber equipment, it is used for informing described use
Family equipment its close to described region, wherein said dedicated signaling includes removing in described region
One or more non-frequent access outside the small-cell that described subscriber equipment frequently accesses is little
The cell ID of community；
P. receive and switch over preparation from described subscriber equipment for triggering described macro base station
Confirmation instruction, and switch over preparation based on described confirmation instruction, wherein said confirmation refers to
Show that the cell ID including target small-cell, described target small-cell are the institute in described region
State the strongest slight of signal intensity that described in one or more small-cell, subscriber equipment measurement is arrived
District.
4. the side being used for finding small-cell in the subscriber equipment of heterogeneous communications network
Method, it is characterised in that described subscriber equipment storage has the little of the small-cell of all frequent access
District's mark and position range information, said method comprising the steps of:
The position range information of small-cell based on the described frequent access stored and being estimated
The positional information of described subscriber equipment of meter, it is judged that described subscriber equipment whether close to one or
The small-cell of multiple frequent access；
Receive from macro base station be used for inform described subscriber equipment it include one close to one
The dedicated signaling in the region of individual or multiple small-cell, wherein said dedicated signaling includes described
One or more non-frequency in addition to the small-cell that described subscriber equipment frequently accesses in region
The cell ID of numerous access small-cell, and wherein grand based on stored by described macro base station
The position range information of all small-cells in community and estimated described subscriber equipment
Positional information determines that described subscriber equipment is the most close to described region；
If the most described subscriber equipment close to the one or more frequently access slight
District, then based on described dedicated signaling, trigger search, to periodically search for described all frequencies
The small-cell of numerous access and the one or more non-frequent access small-cell；
O. send and confirm that instruction, to described macro base station, is used for triggering described macro base station and switches over
Preparing, wherein said confirmation instruction includes the cell ID of target small-cell, described target
Small-cell is small-cell and the one or more non-frequent access of described all frequent access
The small-cell that signal intensity that subscriber equipment measurement described in small-cell arrives is the strongest.
5. one kind finds little for assisting user equipment in the macro base station of heterogeneous communications network
The device of community, it is characterised in that described device includes:
First judgment means, for positions based on all small-cells in the macrocell stored
Put range information and the positional information of estimated described subscriber equipment, it is judged that described user
Equipment is the most close to a region including one or more small-cell；
First dispensing device, if for described subscriber equipment close to described region, then sent out
Send dedicated signaling to described subscriber equipment, be used for informing described subscriber equipment its close to described
Region, wherein said dedicated signaling includes that the one or more in described region is slight
The cell ID in district；
First receiving device, for receive from described subscriber equipment be used for trigger described grand
Base station switches over the confirmation instruction of preparation, and switches over preparation based on described confirmation instruction,
Wherein said confirmation instruction includes the cell ID of target small-cell, and described target small-cell is
The signal that described in the one or more small-cell in described region, subscriber equipment measurement is arrived
The small-cell that intensity is the strongest.
6. the dress being used for finding small-cell in the subscriber equipment of heterogeneous communications network
Put, it is characterised in that described device includes:
Second receive device, for receive from macro base station be used for inform described subscriber equipment
It is close to the dedicated signaling in a region including one or more small-cell, wherein said
Dedicated signaling includes the cell ID of the one or more small-cells in described region, and
Wherein by described macro base station position range based on all small-cells in the macrocell stored
The positional information of information and estimated described subscriber equipment determines that described subscriber equipment is
No close to described region；
First searcher, for based on described dedicated signaling, triggers search, with periodically
The one or more small-cell in described region is searched on ground；
Second dispensing device, is used for sending confirmation instruction extremely described macro base station, is used for triggering institute
Stating macro base station and switch over preparation, wherein said confirmation instruction includes the little of target small-cell
District identifies, and described target small-cell is in the one or more small-cell in described region
The small-cell that signal intensity that described subscriber equipment measurement is arrived is the strongest.
7. one kind finds little for assisting user equipment in the macro base station of heterogeneous communications network
The device of community, it is characterised in that described subscriber equipment storage has the little of all frequent access
The cell ID of community and position range information, described device includes:
Second judgment means, for positions based on all small-cells in the macrocell stored
Put range information and the positional information of estimated described subscriber equipment, it is judged that described user
Equipment is the most close to a region including one or more small-cell；
3rd judgment means, if for described subscriber equipment close to described region, then sentenced
Whether the one or more small-cell in disconnected described region all belongs to described subscriber equipment
The small-cell frequently accessed；
3rd dispensing device, is used for if it is not, then send dedicated signaling extremely described subscriber equipment,
For inform described subscriber equipment its close to described region, in wherein said dedicated signaling wrap
Include or many in described region in addition to the small-cell that described subscriber equipment frequently accesses
The cell ID of individual non-frequent access small-cell；
3rd receive device, for receive from described subscriber equipment be used for trigger described grand
Base station switches over the confirmation instruction of preparation, and switches over preparation based on described confirmation instruction,
Wherein said confirmation instruction includes the cell ID of target small-cell, and described target small-cell is
The signal that described in the one or more small-cell in described region, subscriber equipment measurement is arrived
The small-cell that intensity is the strongest.
8. the dress being used for finding small-cell in the subscriber equipment of heterogeneous communications network
Put, it is characterised in that described subscriber equipment storage has the little of the small-cell of all frequent access
District's mark and position range information, described device includes:
4th judgment means, for the position of small-cell based on the described frequent access stored
Put range information and the positional information of estimated described subscriber equipment, it is judged that described user
Whether equipment is close to the small-cell of one or more frequent access；
Receive device, for receive from macro base station be used for inform described subscriber equipment its
Close to the dedicated signaling in a region including one or more small-cell, wherein said special
Signaling includes in described region in addition to the small-cell that described subscriber equipment frequently accesses
The cell ID of one or more non-frequent access small-cells, and wherein by described macro base station
Position range information based on all small-cells in the macrocell stored and estimated
The positional information of described subscriber equipment determines that described subscriber equipment is the most close to described district
Territory；
Second searcher, if for described subscriber equipment close to the one or more
The small-cell frequently accessed, then based on described dedicated signaling, trigger search, with periodically
Small-cell and the one or more the non-frequent access of searching for described all frequent access are little
Community；
4th dispensing device, is used for sending confirmation instruction extremely described macro base station, is used for triggering institute
Stating macro base station and switch over preparation, wherein said confirmation instruction includes the little of target small-cell
District identify, described target small-cell be described all frequent access small-cell and described and
The signal that described in the one or more non-frequent access small-cell, subscriber equipment measurement is arrived is strong
Spend the strongest small-cell.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110190014.0A CN102869053B (en) | 2011-07-07 | For the method and apparatus finding small-cell in heterogeneous communications network | |
| CN201510067487.XA CN104684047B (en) | 2011-07-07 | 2011-07-07 | Method and apparatus in heterogeneous communications network for finding cell |
| US14/128,177 US20140128084A1 (en) | 2011-07-07 | 2012-07-06 | Method and apparatus for discovering a small cell in a heterogonous communication network |
| PCT/IB2012/001443 WO2013005105A2 (en) | 2011-07-07 | 2012-07-06 | Method and apparatus for discovering a small cell in a heterogonous communication network |
| EP12758886.1A EP2730131B1 (en) | 2011-07-07 | 2012-07-06 | Methods and apparatuses for discovering a small cell in a heterogonous communication network |
| JP2014517971A JP5814466B2 (en) | 2011-07-07 | 2012-07-06 | Method and apparatus for discovering small cells in heterogeneous communication networks |
| KR1020147002936A KR101608161B1 (en) | 2011-07-07 | 2012-07-06 | Methods and apparatuses for discovering a small cell in a heterogonous communication network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110190014.0A CN102869053B (en) | 2011-07-07 | For the method and apparatus finding small-cell in heterogeneous communications network |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510067487.XA Division CN104684047B (en) | 2011-07-07 | 2011-07-07 | Method and apparatus in heterogeneous communications network for finding cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102869053A CN102869053A (en) | 2013-01-09 |
| CN102869053B true CN102869053B (en) | 2016-12-14 |
Family
ID=
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|---|---|---|---|---|
| CN2655571Y (en) * | 2002-07-02 | 2004-11-10 | 交互数字技术公司 | Device for zone converting user equipment between UMTS and WLAN |
| WO2009076892A1 (en) * | 2007-12-14 | 2009-06-25 | Huawei Technologies Co., Ltd. | Method and equipment for transferring information of a neighboring cell in a wireless communication system |
| CN101578907A (en) * | 2007-01-10 | 2009-11-11 | 日本电气株式会社 | Wireless communication terminal device, access point device, wireless communication system, and information service method and information fetching method in the system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2655571Y (en) * | 2002-07-02 | 2004-11-10 | 交互数字技术公司 | Device for zone converting user equipment between UMTS and WLAN |
| CN101578907A (en) * | 2007-01-10 | 2009-11-11 | 日本电气株式会社 | Wireless communication terminal device, access point device, wireless communication system, and information service method and information fetching method in the system |
| WO2009076892A1 (en) * | 2007-12-14 | 2009-06-25 | Huawei Technologies Co., Ltd. | Method and equipment for transferring information of a neighboring cell in a wireless communication system |
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Address after: No. 388 Jinqiao ningqiao Road, Pudong New Area, Shanghai Co-patentee after: Alcatel Optical Networks Israe Patentee after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Pudong New Area Jinqiao Ning Road, Shanghai, No. 388 Co-patentee before: Alcatel Optical Networks Israe Patentee before: Shanghai Alcatel-Lucent Co., Ltd. |