CN106454971B - A kind of method and device of cell switching - Google Patents
A kind of method and device of cell switching Download PDFInfo
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- CN106454971B CN106454971B CN201611147490.3A CN201611147490A CN106454971B CN 106454971 B CN106454971 B CN 106454971B CN 201611147490 A CN201611147490 A CN 201611147490A CN 106454971 B CN106454971 B CN 106454971B
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
Abstract
The present invention discloses a kind of method and device of cell switching, it is related to technical field of communication network, to avoid only carrying out cell switching according to the channel condition of Target cell, switching to terminal, channel condition is optimal but the higher Target cell of load, caused by reduce cell uplink business data transmission speed the problem of.The method includes base stations according to the signal strength of each neighboring community of source cell, and Target cell is chosen from neighboring community；Each dual carrier High Speed Uplink Packet access DC-HSUPA carrier wave that base station acquisition Target cell is configured is to information；Base station determines the uplink load of each DC-HSUPA carrier wave pair according to each DC-HSUPA carrier wave of Target cell respectively to information, and DC-HSUPA carrier wave is to including main carrier and secondary carrier；Switching terminal is treated according to the uplink load of each DC-HSUPA carrier wave pair and carries out cell switching in base station.Scheme provided by the invention is suitable for using when cell switches.
Description
Technical field
The present invention relates to the method and devices that technical field of communication network more particularly to a kind of cell switch.
Background technique
With the development of intelligent terminal, more and more users by the online share photos of intelligent terminal, micro- video, and this
A little photos, micro- video data need to can just reach corresponding processor and carry out data processing through uplink channel transmission.Therefore, it mentions
Rising higher uplink bit rate just seems particularly significant.
In order to promote the uplink business data transmission rate of cell, third generation partner program (the 3rd
Generation Partner Project, hereinafter referred to as 3GPP) tissue introduces dual carrier High Speed Uplink Packet access
(Dual Cell high speed uplink packet access, hereinafter referred to as DC-HSUPA) technology, so that upstream peak
Rate is increased to 11Mbps.
According to the regulation of 3GPP, when terminal needs to carry out cell switching between two cells using DC-HSUPA technology
When, as long as the channel condition of Target cell is better than the cell that is presently in of terminal, it is small that mmk terminal by source cell switches to target
Area.But using the cell of the DC-HSUPA technology based on dual carrier, the uplink business data transmission rate of cell and cell
Load has close connection, when cell is in middle-low load and preferable cell channel condition, the uplink business data of cell
Transmission speed has more than 40% gain compared with the cell for using single carrier, still, when cell channel condition preferably cell
When in high load capacity, the uplink business data transmission speed of cell can be substantially reduced.As it can be seen that DC-HSUPA technology is suitably applied in
The scene of middle-low load.Therefore, cell switching is only carried out according to the channel condition of Target cell in the prior art, it is likely that meeting
Causing terminal to switch to, channel condition is optimal but the higher Target cell of load, and then the uplink business data for reducing cell passes
Defeated speed.
Summary of the invention
The embodiment of the present invention provides a kind of method and device of cell switching, for solving the only letter according to Target cell
Road condition carries out cell switching, and to switch to terminal channel condition is optimal but the higher Target cell of load, caused by
The problem of reducing the uplink business data transmission speed of cell.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
A kind of method of cell switching, the method are applied in cell handover system, include terminal in the system with
And base station, which comprises
Base station Target cell is chosen from neighboring community according to the signal strength of each neighboring community of source cell；
The base station obtains each dual carrier High Speed Uplink Packet access DC- that the Target cell is configured
HSUPA carrier wave is to information；
The base station determines each DC-HSUPA to information according to each DC-HSUPA carrier wave of the Target cell respectively
The uplink load of carrier wave pair, the DC-HSUPA carrier wave is to including main carrier and secondary carrier；
Switching terminal is treated according to the uplink load of each DC-HSUPA carrier wave pair and carries out cell switching in the base station.
A kind of device of cell switching, described device include:
It is small to choose target for the signal strength according to each neighboring community of source cell from neighboring community for selection unit
Area；
Acquiring unit, each dual carrier High Speed Uplink Packet access configured for obtaining the Target cell
DC-HSUPA carrier wave is to information, and the DC-HSUPA carrier wave is to including main carrier and secondary carrier；
Determination unit, for determining each DC- respectively to information according to each DC-HSUPA carrier wave of the Target cell
The uplink load of HSUPA carrier wave pair；
Switch unit is cut for treating switching terminal progress cell according to the uplink load of each DC-HSUPA carrier wave pair
It changes.
The method and device of cell provided in an embodiment of the present invention switching, and in the prior art, only according to Target cell
Channel condition carries out cell switching, and switching to terminal, channel condition is optimal but the higher Target cell of load, and cause
The uplink business data transmission speed for reducing cell is compared, after the signal strength selection target cell according to cell, not
It is randomly assigned the DC-HSUPA carrier wave pair of Target cell for terminal, but the uplink load of each DC-HSUPA carrier wave pair can be passed through
Be switched to DC-HSUPA carrier wave pair is determined, so as to avoid only cutting according to the channel condition of Target cell to carry out cell
Change, switching to terminal, channel condition is optimal but the higher Target cell of load, caused by reduce cell uplink service
The problem of data transmission bauds.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of flow chart of the method for cell switching provided in an embodiment of the present invention；
Fig. 2 is that same frequency DC-HSUPA carrier wave provided in an embodiment of the present invention switches cell when being in low load condition
The flow chart of method；
Fig. 3 is that same frequency DC-HSUPA carrier wave provided in an embodiment of the present invention switches cell when being in middle load condition
The flow chart of method；
Fig. 4 is that same frequency DC-HSUPA carrier wave provided in an embodiment of the present invention switches cell when being in higher load condition
The flow chart of method；
Fig. 5 is the illustrative diagram of the DC-HSUPA carrier wave pair of source cell provided in an embodiment of the present invention configuration；
Fig. 6 is the illustrative diagram of the DC-HSUPA carrier wave pair of Target cell provided in an embodiment of the present invention configuration；
Fig. 7 is a kind of logical construction schematic diagram of the device of cell switching provided in an embodiment of the present invention；
Fig. 8 is a kind of logical construction schematic diagram of base station provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to solve only to carry out cell switching according to the channel condition of Target cell, terminal is made to switch to channel condition most
The higher Target cell of excellent but load, caused by reduce cell uplink business data transmission speed the problem of, the present invention
Embodiment provides a kind of method of cell switching, as shown in Figure 1, this method comprises:
It is small to choose target according to the signal strength of each neighboring community of source cell from neighboring community for step 101, base station
Area.
It should be noted that the method for cell switching provided in an embodiment of the present invention, which is suitable for terminal, is supporting DC-HSUPA
It is switched between the cell of function, i.e. DC-HSUPA function is supported in source cell and Target cell.
It should be noted that variation occurs for channel circumstance locating for terminal when terminal moves, therefore, terminal can be incited somebody to action
The measurement result of the signal strength of source cell and each neighboring community reports to base station, so that base station is according to source cell and respectively
The signal strength of neighboring community carries out cell switching.In order to which the rule execution measurement for allowing terminal to be defined according to base station acts and reports
Measurement result, base station can issue a measuring control information to terminal in advance, which includes measuring criterion,
In, measuring criterion can be the trigger condition of terminal report measurement results, for example, can be periodically to base station reporting measurement knot
Fruit.
After terminal reports the measurement result to the signal strength of source cell and each neighboring community to base station, base station meeting
According to the measurement result, the best cell of signal strength is chosen from neighboring community as Target cell.
Each DC-HSUPA carrier wave that step 102, base station acquisition Target cell are configured is to information.
Wherein, DC-HSUPA carrier wave is to including main carrier and secondary carrier.It should be noted that DC-HSUPA carrier wave is to information
The reception general power of reception general power, DC-HSUPA carrier wave centering secondary carrier including DC-HSUPA carrier wave centering main carrier and
The noise power of DC-HSUPA carrier wave pair.
Step 103, base station determine each DC-HSUPA to information according to each DC-HSUPA carrier wave of Target cell respectively
The uplink load of carrier wave pair.
It should be noted that basis need to be shifted to an earlier date in order to select be switched to DC-HSUPA carrier wave clock synchronization foundation
Each DC-HSUPA carrier wave of Target cell determines the uplink load of each DC-HSUPA carrier wave pair to information respectively.
It is made an uproar Uplifting amount (Raise Over Thermal, hereinafter referred to as ROT) Lai Hengliang DC-HSUPA carrier wave in network the bottom of with
Pair uplink load.Comprehensive assessment is carried out for the ease of the ROT of the DC-HSUPA carrier wave pair to Target cell, the present invention is implemented
Example introduces ROTMerge。
Base station determines the ROT of each DC-HSUPA carrier wave pair according to each DC-HSUPA carrier wave respectively to informationMerge, DC-
The ROT of HSUPA carrier wave pairMergeIt can be calculated with following formula:
Wherein, I1Reception general power, I for DC-HSUPA carrier wave centering main carrier2For DC-HSUPA carrier wave centering secondary carrier
Reception general power, N0For the noise power of DC-HSUPA carrier wave pair.
Then, base station is according to ROTMergeNumerical value the uplink load of DC-HSUPA carrier wave pair is divided into high, medium and low three kinds of shapes
State, if ROTMergeLess than first threshold, then base station determines DC-HSUPA carrier wave in low load condition；If ROTMergeIt is more than or equal to
First threshold and it is less than second threshold, then base station determines DC-HSUPA carrier wave in middle load condition；If ROTMergeGreater than etc.
In second threshold, then base station determines DC-HSUPA carrier wave in higher load condition.
Step 104, base station treat switching terminal according to the uplink load of each DC-HSUPA carrier wave pair and carry out cell switching.
The method of cell provided in an embodiment of the present invention switching, and in the prior art, only according to the channel item of Target cell
Part makes terminal switch to that channel condition is optimal but the higher Target cell of load carrying out cell switching and causes to reduce cell
Uplink business data transmission speed compare, after the signal strength selection target cell according to cell, not for terminal with
Machine distributes the DC-HSUPA carrier wave pair of Target cell, but can be by the uplink load of each DC-HSUPA carrier wave pair to determine
The DC-HSUPA carrier wave pair being switched to makes end so as to avoid only cell switching is carried out according to the channel condition of Target cell
End switches to that channel condition is optimal but the higher Target cell of load, caused by reduce the uplink business data transmission of cell
The problem of speed.
It should be noted that true to information difference according to each DC-HSUPA carrier wave of Target cell in step 103, base station
After the uplink load of fixed each DC-HSUPA carrier wave pair, need to select institute according to the uplink load of each DC-HSUPA carrier wave pair
The DC-HSUPA carrier wave pair being switched to is based on this, in another implementation provided in an embodiment of the present invention, as shown in Fig. 2,
When Target cell and the same frequency DC-HSUPA carrier wave of source cell are to low load condition is in, step 104, base station are according to each DC-
The uplink load of HSUPA carrier wave pair, which treats switching terminal progress cell switching, can be implemented as step 201 to 202:
Step 201, when Target cell and the same frequency DC-HSUPA carrier wave of source cell are to low load condition is in, then base station to
To be switched terminal sends the first switching command, so as to be switched terminal is switched to same frequency DC-HSUPA according to the first switching command
Carrier wave is to upper.
It should be noted that need preferentially to select the DC-HSUPA carrier wave pair of low load condition in the embodiment of the present invention, with
So that be switched terminal can have faster transmission speed when the DC-HSUPA carrier wave is to transmitting data.
Step 202, base station activation with frequency DC-HSUPA carrier wave pair secondary carrier.
It should be noted that secondary carrier may be at state of activation in Target cell, inactive shape also may be at
State activates secondary carrier if secondary carrier is in unactivated state, if secondary carrier is active, keeps the activation shape
State.
When Target cell and the same frequency DC-HSUPA carrier wave of source cell are to middle load condition is in, in the embodiment of the present invention
In another implementation of offer, as shown in figure 3, step 104, base station are according to the uplink load of each DC-HSUPA carrier wave pair
Treating switching terminal progress cell switching can be implemented as step 301 to 305:
Step 301, when Target cell and the same frequency DC-HSUPA carrier wave of source cell are to middle load condition is in, then base station is sentenced
DC-HSUPA carrier wave centering in disconnected Target cell in addition to same frequency DC-HSUPA carrier wave pair whether there is underload DC-HSUPA
Carrier wave pair, if so, 302 are thened follow the steps, if it is not, thening follow the steps 304.
Step 302, base station send the second switching command to be switched terminal, so as to be switched terminal is according to the second switching
Instruction is switched to underload DC-HSUPA carrier wave pair.
The secondary carrier of step 303, base station activation underload DC-HSUPA carrier wave pair.
It should be noted that if secondary carrier is in unactivated state, secondary carrier is activated, if auxiliary in Target cell
Carrier wave is active, then keeps the state of activation.
Step 304, base station send third switching command to be switched terminal, so as to be switched terminal switches according to third
Instruction is switched to same frequency DC-HSUPA carrier wave to upper.
Step 305, base station activation with frequency DC-HSUPA carrier wave pair secondary carrier.
It should be noted that if secondary carrier is in unactivated state, secondary carrier is activated, if auxiliary in Target cell
Carrier wave is active, then keeps the state of activation.
It should be noted that when the same frequency DC-HSUPA carrier wave of Target cell and source cell is to being in higher load condition,
In another kind implementation provided in an embodiment of the present invention, as shown in figure 4, step 104, base station are according to each DC-HSUPA carrier wave
Pair uplink load treat switching terminal carry out cell switching can be implemented as step 401 to 405:
Step: 401, when Target cell and the same frequency DC-HSUPA carrier wave of source cell to be in higher load condition, then base station
Judge the DC-HSUPA carrier wave centering in Target cell in addition to same frequency DC-HSUPA carrier wave pair with the presence or absence of underload DC-
HSUPA carrier wave pair, if so, 402 are thened follow the steps, if it is not, thening follow the steps 404.
Step 402, base station send the 4th switching command to be switched terminal, so as to be switched terminal is according to the 4th switching
Instruction is switched to underload DC-HSUPA carrier wave pair.
The secondary carrier of step 403, base station activation underload DC-HSUPA carrier wave pair.
It should be noted that if secondary carrier is in unactivated state, secondary carrier is activated, if auxiliary in Target cell
Carrier wave is active, then keeps the state of activation.
Step 404, base station send the 5th switching command to be switched terminal, so as to be switched terminal is according to the 5th switching
Instruction is switched to same frequency DC-HSUPA carrier wave to upper.
If step 405, with frequency DC-HSUPA carrier wave to being active, base station is to same frequency DC-HSUPA carrier wave pair
Secondary carrier is deactivated.
It should be noted that secondary carrier may be at state of activation in Target cell, inactive shape also may be at
State, if secondary carrier is active, base station deactivates secondary carrier, if secondary carrier is in unactivated state,
Keep the unactivated state.
The method of cell provided in an embodiment of the present invention switching, base station is according to the uplink load of each DC-HSUPA carrier wave pair
Situation is treated switching terminal and is switched over, and the lower DC-HSUPA carrier wave pair of uplink load can be preferentially switched to, to guarantee
The uplink business data transmission speed of terminal avoids and only carries out according to the channel condition of Target cell cell switching and make end
End switches to the uplink business data transmission that channel condition is optimal but cell is reduced caused by the higher Target cell of load
The problem of speed.Further, since it is more steady using the speed of single carrier transmission data in the high scene of uplink load, and use
DC-HSUPA carrier wave can be substantially reduced the speed of transmission data, so, when the uplink load of all DC-HSUPA carrier waves pair is equal
When higher, base station is only switched to be switched terminal on the main carrier of DC-HSUPA carrier wave pair, at this point, the secondary carrier of Target cell
In the state not activated, Target cell carries out data transmission using only single carrier, so as to avoid the field high in uplink load
In scape using DC-HSUPA carrier wave to transmission data when, between main and auxiliary carrier wave due to interactive information consumption of network resources, and cause
Transmission data speed be substantially reduced, and then solve in the high scene of uplink load using DC-HSUPA carrier wave to transmission data
The problem of speed can be substantially reduced.
Above-described embodiment is illustrated below in conjunction with specific scene.
Terminal A periodically measures the signal strength of source cell and neighboring community, and to base station reporting measurement knot
Fruit.
At this point, according to the measurement result, it is small as target to choose the best cell of signal strength from neighboring community for base station
Area.
As shown in fig. 5, it is assumed that there are two carrier wave F1 and F2 for source cell configuration, and DC-HSUPA carrier wave is configured by F1 and F2
It is right.As shown in fig. 6, there are four carrier wave F1, F2, F3 and F4 for Target cell configuration, wherein F1 and F2 is configured to DC-HSUPA carrier wave
DC-HSUPA carrier wave is configured to 2 to 1, F3 and F4.
It should be noted that the DC- that DC-HSUPA carrier wave is configured to F1 in 1, with source cell and F2 in Target cell
HSUPA carrier wave is to for same frequency DC-HSUPA carrier wave pair.
Then, base station takes different community to cut according to the uplink load situation of two DC-HSUPA carrier waves pair of Target cell
Change strategy.
If the DC-HSUPA carrier wave of Target cell F1 and F2 configuration is to for underload, base station instruction terminal A is switched to mesh
F1 the and F2 carrier wave of cell is marked to upper, and after the completion of switching, secondary carrier is activated, to guarantee that terminal A is able to use DC-HSUPA skill
Art carries out data transmission.
If the DC-HSUPA carrier wave of Target cell F1 and F2 configuration is to being middle load, base station judges what F3 and F4 were configured
Whether DC-HSUPA carrier wave is to being underload, if so, base station instruction terminal A is switched to F3 the and F4 carrier wave pair of Target cell
On, and after the completion of switching, secondary carrier is activated, is carried out data transmission with guaranteeing that terminal A is able to use DC-HSUPA technology；If it is not,
Then instruction terminal A in base station is switched to F1 the and F2 carrier wave of Target cell to upper, and after the completion of switching, secondary carrier is activated, to guarantee
Terminal A, which is able to use DC-HSUPA technology, to carry out data transmission.
If the DC-HSUPA carrier wave of Target cell F1 and F2 configuration is to being high load capacity, base station judges what F3 and F4 were configured
Whether DC-HSUPA carrier wave is to being underload, if so, base station instruction terminal A is switched to F3 the and F4 carrier wave pair of Target cell
On, and after the completion of switching, secondary carrier is activated, is carried out data transmission with guaranteeing that terminal A is able to use DC-HSUPA technology；If it is not,
Then instruction terminal A in base station is switched on the F1 carrier wave of Target cell, that is, single carrier state is in, to avoid using under high load capacity
DC-HSUPA carrier wave reduces problem to brought speed.
Corresponding to above-mentioned method flow, in order to solve only to carry out cell switching according to the channel condition of Target cell,
Switching to terminal, channel condition is optimal but the higher Target cell of load, caused by reduce cell uplink business data
The problem of transmission speed, the embodiment of the invention provides a kind of devices of cell switching, as shown in fig. 7, the device includes:
Selection unit 701 chooses target for the signal strength according to each neighboring community of source cell from neighboring community
Cell；
Acquiring unit 702, each dual carrier High Speed Uplink Packet access DC- configured for obtaining Target cell
HSUPA carrier wave is to information, and DC-HSUPA carrier wave is to including main carrier and secondary carrier；
Determination unit 703, for determining each DC- respectively to information according to each DC-HSUPA carrier wave of Target cell
The uplink load of HSUPA carrier wave pair；
Switch unit 704 carries out cell for treating switching terminal according to the uplink load of each DC-HSUPA carrier wave pair
Switching.
Determination unit 703 is also used to determine information respectively each DC-HSUPA carrier wave according to each DC-HSUPA carrier wave
Pair merging bottom make an uproar Uplifting amount ROTMerge, wherein DC-HSUPA carrier wave includes that DC-HSUPA carrier wave centering main carrier connects to information
Receive general power I1, DC-HSUPA carrier wave centering secondary carrier reception general power I2And the noise power N of DC-HSUPA carrier wave pair0,If ROTMergeLess than first threshold, it is determined that DC-HSUPA carrier wave is in low load condition；If
ROTMergeMore than or equal to first threshold and it is less than second threshold, it is determined that DC-HSUPA carrier wave is in middle load condition；If
ROTMergeMore than or equal to second threshold, it is determined that DC-HSUPA carrier wave is in higher load condition.
Switch unit 704 is also used to work as the same frequency DC-HSUPA carrier wave of Target cell and source cell in underload shape
State then sends the first switching command to be switched terminal, so as to be switched terminal is switched to according to the first switching command with frequency
DC-HSUPA carrier wave is to upper；Activate the secondary carrier with frequency DC-HSUPA carrier wave pair.
Switch unit 704 is also used to work as the same frequency DC-HSUPA carrier wave of Target cell and source cell in middle load shape
State then judges the DC-HSUPA carrier wave centering in Target cell in addition to same frequency DC-HSUPA carrier wave pair with the presence or absence of underload
DC-HSUPA carrier wave pair；When judging that DC-HSUPA carrier wave centering in Target cell in addition to same frequency DC-HSUPA carrier wave pair exists
Underload DC-HSUPA carrier wave pair sends the second switching command to be switched terminal, so as to be switched terminal is cut according to second
It changes instruction and is switched to underload DC-HSUPA carrier wave to upper；Activate the secondary carrier of underload DC-HSUPA carrier wave pair；When judging mesh
It marks the DC-HSUPA carrier wave centering in cell in addition to same frequency DC-HSUPA carrier wave pair and underload DC-HSUPA carrier wave pair is not present,
Third switching command is sent to be switched terminal, so as to be switched terminal is switched to same frequency DC- according to third switching command
HSUPA carrier wave is to upper；Activate the secondary carrier with frequency DC-HSUPA carrier wave pair.
Switch unit 704 is also used to work as the same frequency DC-HSUPA carrier wave of Target cell and source cell in high load capacity shape
State then judges the DC-HSUPA carrier wave centering in Target cell in addition to same frequency DC-HSUPA carrier wave pair with the presence or absence of underload
DC-HSUPA carrier wave pair；When judging that DC-HSUPA carrier wave centering in Target cell in addition to same frequency DC-HSUPA carrier wave pair exists
Underload DC-HSUPA carrier wave pair then sends the 4th switching command to be switched terminal, so as to be switched terminal is according to the 4th
Switching command is switched to underload DC-HSUPA carrier wave to upper；Activate the secondary carrier of underload DC-HSUPA carrier wave pair；Work as judgement
Underload DC-HSUPA carrier wave is not present in DC-HSUPA carrier wave centering in Target cell in addition to same frequency DC-HSUPA carrier wave pair
It is right, then the 5th switching command is sent to be switched terminal, so as to be switched terminal is switched to according to the 5th switching command with frequency
DC-HSUPA carrier wave is to upper；If with frequency DC-HSUPA carrier wave to being active, to the auxiliary of same frequency DC-HSUPA carrier wave pair
Carrier wave is deactivated.
The device of cell provided in an embodiment of the present invention switching, and in the prior art, only according to the channel item of Target cell
Part carries out cell switching, and switching to terminal, channel condition is optimal but the higher Target cell of load, and cause to reduce small
The uplink business data transmission speed in area is compared, and is not terminal after the signal strength selection target cell according to cell
It is randomly assigned the DC-HSUPA carrier wave pair of Target cell, but can be determined by the uplink load of each DC-HSUPA carrier wave pair
The DC-HSUPA carrier wave pair being switched to makes so as to avoid only cell switching is carried out according to the channel condition of Target cell
Terminal switches to that channel condition is optimal but the higher Target cell of load, caused by reduce the uplink business data of cell and pass
The problem of defeated speed.
The embodiment of the present invention also provides a kind of base station, as shown in figure 8, the device includes memory 801, processor 802 is received
Send out device 803, bus 804.
Memory 801 can be ROM (Read Only Memory, read-only memory), static storage device, dynamic memory
Equipment or RAM (Random Access Memory, random access memory).Memory 801 can store an operating system and
Other applications.When by software or firmware to realize technical solution provided in an embodiment of the present invention, for realizing this
The program code for the technical solution that inventive embodiments provide is stored in memory 801, and is executed by processor 802.
Transceiver 803 is for device and other equipment or communication network (such as, but not limited to Ethernet, RAN Radio
Access Network, wireless access network), WLAN (Wireless Local Area Network, WLAN) etc.) it
Between communication.
Processor 802 can use general central processing unit (Central Processing Unit, CPU), micro process
Device, application specific integrated circuit (Application Specific Integrated Circuit, ASIC) or one or
Multiple integrated circuits, for executing relative program, to realize technical solution provided by the embodiment of the present invention.
Bus 804 may include an access, in device all parts (such as memory 801, transceiver 803 and processor
802) information is transmitted between.
It should be noted that although hardware shown in Fig. 8 illustrate only memory 801, transceiver 803 and processor 802 and
Bus 804, but during specific implementation, it should be apparent to a person skilled in the art that the device also includes to realize normal fortune
Other devices necessary to row.Meanwhile according to specific needs, it should be apparent to a person skilled in the art that also may include realizing it
The hardware device of his function.
Specifically, processor when base station shown in Fig. 8 is for realizing device shown in Fig. 7 embodiment, in the device
802, for the signal strength according to each neighboring community of source cell, Target cell is chosen from neighboring community；It is small to obtain target
Each dual carrier High Speed Uplink Packet access DC-HSUPA carrier wave that area is configured is to information, and DC-HSUPA carrier wave is to including
Main carrier and secondary carrier；Each DC-HSUPA carrier wave pair is determined respectively to information according to each DC-HSUPA carrier wave of Target cell
Uplink load；Switching terminal, which is treated, according to the uplink load of each DC-HSUPA carrier wave pair carries out cell switching.
Processor 802 is also used to determine information respectively each DC-HSUPA carrier wave pair according to each DC-HSUPA carrier wave
Merging bottom make an uproar Uplifting amount ROTMerge, wherein DC-HSUPA carrier wave includes the reception of DC-HSUPA carrier wave centering main carrier to information
General power I1, DC-HSUPA carrier wave centering secondary carrier reception general power I2And the noise power N of DC-HSUPA carrier wave pair0,If ROTMergeLess than first threshold, it is determined that DC-HSUPA carrier wave is in low load condition；If
ROTMergeMore than or equal to first threshold and it is less than second threshold, it is determined that DC-HSUPA carrier wave is in middle load condition；If
ROTMergeMore than or equal to second threshold, it is determined that DC-HSUPA carrier wave is in higher load condition.
Transceiver 803, for determining the same frequency DC-HSUPA carrier wave of Target cell and source cell to being in when processor 802
Low load condition then sends the first switching command to be switched terminal, so as to be switched terminal is cut according to the first switching command
Same frequency DC-HSUPA carrier wave is changed to upper.
Processor 802 is also used to activate the secondary carrier of same frequency DC-HSUPA carrier wave pair.
Processor 802, is also used to same frequency DC-HSUPA carrier wave when Target cell and source cell in middle load condition,
Then judge the DC-HSUPA carrier wave centering in Target cell in addition to same frequency DC-HSUPA carrier wave pair with the presence or absence of underload DC-
HSUPA carrier wave pair；When judging the DC-HSUPA carrier wave centering in Target cell in addition to same frequency DC-HSUPA carrier wave pair, there are low
Load DC-HSUPA carrier wave pair then controlled transceiver 803 to be switched terminal and sends the second switching command, so as to be switched end
End is switched to underload DC-HSUPA carrier wave to upper according to the second switching command；Activate the auxiliary load of underload DC-HSUPA carrier wave pair
Wave；When judging the DC-HSUPA carrier wave centering in Target cell in addition to same frequency DC-HSUPA carrier wave pair, there is no underload DC-
HSUPA carrier wave pair, then control transceiver 803 to be switched terminal send third switching command so as to be switched terminal according to
Third switching command is switched to same frequency DC-HSUPA carrier wave to upper；Activate the secondary carrier with frequency DC-HSUPA carrier wave pair.
Processor 802, is also used to same frequency DC-HSUPA carrier wave when Target cell and source cell in higher load condition,
Then judge the DC-HSUPA carrier wave centering in Target cell in addition to same frequency DC-HSUPA carrier wave pair with the presence or absence of underload DC-
HSUPA carrier wave pair；When judging the DC-HSUPA carrier wave centering in Target cell in addition to same frequency DC-HSUPA carrier wave pair, there are low
Load DC-HSUPA carrier wave pair then controlled transceiver 803 to be switched terminal and sends the 4th switching command, so as to be switched end
End is switched to underload DC-HSUPA carrier wave to upper according to the 4th switching command；Activate the auxiliary load of underload DC-HSUPA carrier wave pair
Wave；When judging the DC-HSUPA carrier wave centering in Target cell in addition to same frequency DC-HSUPA carrier wave pair, there is no underload DC-
HSUPA carrier wave pair, then control transceiver 803 to be switched terminal send the 5th switching command so as to be switched terminal according to
5th switching command is switched to same frequency DC-HSUPA carrier wave to upper；If right with frequency DC-HSUPA carrier wave to being active
Secondary carrier with frequency DC-HSUPA carrier wave pair deactivates.
Base station provided in an embodiment of the present invention is only carried out according to the channel condition of Target cell small in the prior art
Area's switching, switching to terminal, channel condition is optimal but the higher Target cell of load, and leads to the upper industry for reducing cell
Business data transmission bauds is compared, and after the signal strength selection target cell according to cell, is not randomly assigned mesh for terminal
The DC-HSUPA carrier wave pair of cell is marked, but can be determined and to be switched to by the uplink load of each DC-HSUPA carrier wave pair
DC-HSUPA carrier wave pair switches to terminal so as to avoid only cell switching is carried out according to the channel condition of Target cell
Channel condition is optimal but the higher Target cell of load, caused by reduce the uplink business data transmission speed of cell and ask
Topic.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can borrow
Help software that the mode of required common hardware is added to realize, naturally it is also possible to which the former is more preferably by hardware, but in many cases
Embodiment.Based on this understanding, the portion that technical solution of the present invention substantially in other words contributes to the prior art
Dividing can be embodied in the form of software products, which stores in a readable storage medium, such as count
The floppy disk of calculation machine, hard disk or CD etc., including some instructions are used so that computer equipment (it can be personal computer,
Server or the network equipment etc.) execute method described in each embodiment of the present invention.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of method of cell switching, which is characterized in that the method is applied in cell handover system, wraps in the system
Include terminal and base station, which comprises
Base station Target cell is chosen from neighboring community according to the signal strength of each neighboring community of source cell；
The base station obtains each dual carrier High Speed Uplink Packet access DC-HSUPA that the Target cell is configured and carries
Wave is to information, and for the DC-HSUPA carrier wave to including main carrier and secondary carrier, the DC-HSUPA carrier wave includes DC- to information
Reception general power, the reception general power and DC- of DC-HSUPA carrier wave centering secondary carrier of HSUPA carrier wave centering main carrier
The noise power of HSUPA carrier wave pair；
The base station determines each DC-HSUPA carrier wave to information according to each DC-HSUPA carrier wave of the Target cell respectively
Pair uplink load；
Switching terminal is treated according to the uplink load of each DC-HSUPA carrier wave pair and carries out cell switching in the base station.
2. the method for cell switching according to claim 1, which is characterized in that the base station is according to the Target cell
Each DC-HSUPA carrier wave determines the uplink load of each DC-HSUPA carrier wave pair to information respectively, comprising:
The base station determines that the merging bottom of each DC-HSUPA carrier wave pair is made an uproar lift to information according to each DC-HSUPA carrier wave respectively
Rising amount ROTMerge, wherein the DC-HSUPA carrier wave includes the reception total work of the DC-HSUPA carrier wave centering main carrier to information
Rate I1, the DC-HSUPA carrier wave centering secondary carrier reception general power I2And the noise power of the DC-HSUPA carrier wave pair
N0,
If ROTMergeLess than first threshold, then the base station determines DC-HSUPA carrier wave in low load condition；
If ROTMergeMore than or equal to the first threshold and it is less than second threshold, then the base station determines DC-HSUPA carrier wave pair
In middle load condition；
If ROTMergeMore than or equal to second threshold, then the base station determines DC-HSUPA carrier wave in higher load condition.
3. the method for cell switching according to claim 2, which is characterized in that the base station is carried according to each DC-HSUPA
The uplink load of wave pair treats switching terminal and carries out cell switching, comprising:
When the same frequency DC-HSUPA carrier wave of the Target cell and the source cell is to low load condition is in, then the base station to
The to be switched terminal sends the first switching command, so that the to be switched terminal is switched to according to first switching command
The same frequency DC-HSUPA carrier wave is to upper；
With the secondary carrier of frequency DC-HSUPA carrier wave pair described in the base station activation.
4. the method for cell switching according to claim 2, which is characterized in that the base station is carried according to each DC-HSUPA
The uplink load of wave pair treats switching terminal and carries out cell switching, further includes:
When the Target cell and the same frequency DC-HSUPA carrier wave of the source cell are to middle load condition is in, then the base station is sentenced
The DC-HSUPA carrier wave centering broken in the Target cell in addition to the same frequency DC-HSUPA carrier wave pair is with the presence or absence of underload
DC-HSUPA carrier wave pair；
If so, the base station sends the second switching command to the to be switched terminal so that the to be switched terminal according to
Second switching command is switched to the underload DC-HSUPA carrier wave to upper；
The secondary carrier of underload DC-HSUPA carrier wave pair described in the base station activation；
If it is not, then the base station to the to be switched terminal sends third switching command so that the to be switched terminal according to
The third switching command is switched to the same frequency DC-HSUPA carrier wave to upper；
With the secondary carrier of frequency DC-HSUPA carrier wave pair described in the base station activation.
5. the method for cell switching according to claim 2, which comprises
When the Target cell and the same frequency DC-HSUPA carrier wave of the source cell are to higher load condition is in, then the base station is sentenced
The DC-HSUPA carrier wave centering broken in the Target cell in addition to the same frequency DC-HSUPA carrier wave pair is with the presence or absence of underload
DC-HSUPA carrier wave pair；
If so, the base station sends the 4th switching command to the to be switched terminal so that the to be switched terminal according to
4th switching command is switched to the underload DC-HSUPA carrier wave to upper；
The secondary carrier of underload DC-HSUPA carrier wave pair described in the base station activation；
If it is not, then the base station to the to be switched terminal sends the 5th switching command so that the to be switched terminal according to
5th switching command is switched to the same frequency DC-HSUPA carrier wave to upper；
If the same frequency DC-HSUPA carrier wave is to being active, the base station is to the same frequency DC-HSUPA carrier wave pair
Secondary carrier is deactivated.
6. a kind of device of cell switching, which is characterized in that described device includes:
Selection unit chooses Target cell for the signal strength according to each neighboring community of source cell from neighboring community；
Acquiring unit, each dual carrier High Speed Uplink Packet access DC- configured for obtaining the Target cell
HSUPA carrier wave is to information, and the DC-HSUPA carrier wave is to including main carrier and secondary carrier, and the DC-HSUPA carrier wave is to packet
Include the reception general power of DC-HSUPA carrier wave centering main carrier, the reception general power of DC-HSUPA carrier wave centering secondary carrier and
The noise power of DC-HSUPA carrier wave pair；
Determination unit, for determining each DC-HSUPA respectively to information according to each DC-HSUPA carrier wave of the Target cell
The uplink load of carrier wave pair；
Switch unit carries out cell switching for treating switching terminal according to the uplink load of each DC-HSUPA carrier wave pair.
7. the device of cell switching according to claim 6, which is characterized in that
The determination unit, specifically for determining each DC-HSUPA carrier wave pair respectively to information according to each DC-HSUPA carrier wave
Merging bottom make an uproar Uplifting amount ROTMerge, wherein the DC-HSUPA carrier wave includes the main load of DC-HSUPA carrier wave centering to information
The reception general power I of wave1, the DC-HSUPA carrier wave centering secondary carrier reception general power I2And the DC-HSUPA carrier wave
Pair noise power N0,If ROTMergeLess than first threshold, it is determined that DC-HSUPA carrier wave is to being in
Low load condition；If ROTMergeMore than or equal to the first threshold and it is less than second threshold, it is determined that DC-HSUPA carrier wave is to place
In middle load condition；If ROTMergeMore than or equal to second threshold, it is determined that DC-HSUPA carrier wave is in higher load condition.
8. the device of cell switching according to claim 7, which is characterized in that
The switch unit is also used to bear when the Target cell and the same frequency DC-HSUPA carrier wave of the source cell in low
Lotus state then sends the first switching command to the to be switched terminal, so that the to be switched terminal is cut according to described first
It changes instruction and is switched to the same frequency DC-HSUPA carrier wave to upper；Activate the secondary carrier of the same frequency DC-HSUPA carrier wave pair.
9. the device of cell switching according to claim 7, which is characterized in that
The switch unit is also used to bear when the Target cell and the same frequency DC-HSUPA carrier wave of the source cell in being in
Lotus state then judges whether is DC-HSUPA carrier wave centering in the Target cell in addition to the same frequency DC-HSUPA carrier wave pair
There are underload DC-HSUPA carrier waves pair；When judging in the Target cell in addition to the same frequency DC-HSUPA carrier wave pair
There are underload DC-HSUPA carrier waves pair for the centering of DC-HSUPA carrier wave, send the second switching command to the to be switched terminal, with
So that the to be switched terminal is switched to the underload DC-HSUPA carrier wave to upper according to second switching command；Activation institute
State the secondary carrier of underload DC-HSUPA carrier wave pair；When judge in the Target cell except the same frequency DC-HSUPA carrier wave to it
Underload DC-HSUPA carrier wave pair is not present in outer DC-HSUPA carrier wave centering, sends third switching to the to be switched terminal and refers to
It enables, so that the to be switched terminal is switched to the same frequency DC-HSUPA carrier wave to upper according to the third switching command；Swash
The secondary carrier of the same frequency DC-HSUPA carrier wave pair living.
10. the device of cell switching according to claim 7, which is characterized in that
The switch unit is also used to bear when the Target cell and the same frequency DC-HSUPA carrier wave of the source cell in high
Lotus state then judges whether is DC-HSUPA carrier wave centering in the Target cell in addition to the same frequency DC-HSUPA carrier wave pair
There are underload DC-HSUPA carrier waves pair；When judging in the Target cell in addition to the same frequency DC-HSUPA carrier wave pair
There are underload DC-HSUPA carrier waves pair for the centering of DC-HSUPA carrier wave, then send the 4th switching command to the to be switched terminal,
So that the to be switched terminal is switched to the underload DC-HSUPA carrier wave to upper according to the 4th switching command；Activation
The secondary carrier of the underload DC-HSUPA carrier wave pair；When judging in the Target cell except the same frequency DC-HSUPA carrier wave pair
Except DC-HSUPA carrier wave centering underload DC-HSUPA carrier wave pair is not present, then send the 5th to the to be switched terminal and cut
Instruction is changed, so that the to be switched terminal is switched to the same frequency DC-HSUPA carrier wave pair according to the 5th switching command
On；If the same frequency DC-HSUPA carrier wave to being active, to the secondary carrier of the same frequency DC-HSUPA carrier wave pair into
Row deactivates.
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| CN201611147490.3A CN106454971B (en) | 2016-12-13 | 2016-12-13 | A kind of method and device of cell switching |
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