CN104202780B - Cell plus-minus method, cell adder-subtracter and terminal - Google Patents

Cell plus-minus method, cell adder-subtracter and terminal Download PDF

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Publication number
CN104202780B
CN104202780B CN201410467767.5A CN201410467767A CN104202780B CN 104202780 B CN104202780 B CN 104202780B CN 201410467767 A CN201410467767 A CN 201410467767A CN 104202780 B CN104202780 B CN 104202780B
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assistant service
service cell
candidate
cell
information
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CN104202780A (en
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李明菊
朱亚军
张云飞
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Abstract

The present invention proposes a kind of cell plus-minus method, a kind of cell adder-subtracter, a kind of serving BS and a kind of terminal, wherein, cell plus-minus method, including：Main serving BS obtains the switching-state information and switch time information of each candidate's assistant service cell in multiple candidate's assistant service cells in the measurement report after the measurement report of plus-minus triggering of terminal transmission is received；The main serving BS selects the target assistant service cell that the terminal will add according to the switching-state information and switch time information of each candidate's assistant service cell from the multiple candidate's assistant service cell.Pass through technical scheme so that terminal can as soon as possible access and use assistant service cell, so as to reduce the time of terminal peak speed decline so that terminal peak rates can recover as early as possible.

Description

Cell plus-minus method, cell adder-subtracter and terminal
Technical field
The present invention relates to cell selection technology field, adds and subtracts method in particular to a kind of cell, a kind of cell is added and subtracted Device, a kind of serving BS and a kind of terminal.
Background technology
In LTE-A (Long Term Evolution-Advanced) network, in order to further improve peak rate, introduce Carrier aggregation technology.In carrier aggregation technology, user can first connect a macrocell to ensure to connect continuity, this macrocell On carrier frequency F1, then this macrocell is the Pcell (Primary Cell, main serving cell) of user.And user simultaneously Under carrier frequency F2 cell coverage area, in order to improve user's peak rate, base station is selected according to user's measurement report for user The stronger cell of the upper signal of F2 is selected as Scell (Secondary Cell, assistant service cell).So, multiple services Cell, which can combine, provides the user uplink and downlink communication so that user's available bandwidth becomes big, so as to improve peak rate.Conventional method In, what the cell where assistant service cell on carrier frequency was all open, the cell being not turned off.So user is in moving process In, when the signal intensity of assistant service cell reduces, the signal intensity of adjacent cell uprises on carrier frequency F2 where assistant service cell When, user understands strength of transmitted signals measurement report.And the signal intensity that the serving BS where Pcell can be sent according to user is surveyed Amount is reported to select most suitable assistant service cell on carrier frequency F2, that is, signal intensity highest cell.If it find that carry Adjacent cell is stronger than existing assistant service cell signal strength on frequency F2, and serving BS where Pcell will remove existing auxiliary clothes Business cell, then along with the stronger adjacent cell of signal is as new assistant service cell, here it is Scell plus-minus process. Here plus-minus is exactly first to remove old assistant service cell, then adds new assistant service cell.That is, in existing network The decision of Scell plus-minuss and optimal Scell selection criterion are mainly based upon signal strength measurement.
In present assistant service subzone network, assistant service cell can be according to situations such as interference or cell load Carry out semi-static or dynamic switch.That is some assistant service cell is open at the moment, but may be soon It is shut off afterwards.It is on the contrary, it is also possible to what some assistant service cell was closed at the moment, and open soon .Existing Scell plus-minuss scheme does not account for the state of assistant service cell switch, and is mainly determined according to signal intensity Fixed optimal Scell, so may result in user's peak rate and declines suddenly.For example serving BS selects according to signal intensity More preferable Scell is gone out, but the cell is closed when user prepares RRC accesses, then the user can not connect at once Enter the Scell, it is impossible to communication is established as soon as possible, can only could be with this until the Scell is changed into opening from closed mode Scell is connected and is established communication.So, just only Pcell provides communication to user in a long time so that user in long-time Peak rate reduces, and Consumer's Experience is deteriorated.
Therefore, it is necessary to a kind of new technical scheme so that terminal can as soon as possible access and use assistant service cell, from And reduce the time of terminal peak speed decline so that terminal peak rates can recover as early as possible.
The content of the invention
The present invention is based on above mentioned problem, it is proposed that a kind of new technical scheme so that terminal can access as soon as possible And assistant service cell is used, so as to reduce the time of terminal peak speed decline so that terminal peak rates can be extensive as early as possible It is multiple.
In view of this, the present invention proposes a kind of cell plus-minus method, including：Main serving BS is receiving terminal transmission Plus-minus triggering measurement report after, obtain in the measurement report each candidate in multiple candidate's assistant service cells and aid in clothes The switching-state information and switch time information for cell of being engaged in；The main serving BS is according to each candidate's assistant service cell Switching-state information and switch time information, from the multiple candidate's assistant service cell selecting the terminal will add The target assistant service cell added.
Traditional assistant service cell plus-minus method is not because consider the on off state of cell, it is possible that choosing a closing Cell must could access target until target assistant service cell is opened as target assistant service cell, such user Cell, so that just only main serving cell provides communication to user in a long time, the peak rate of user reduces.And at this In the technical scheme of invention, when main serving BS selects assistant service cell, consider the on off state of assistant service cell and open The time is closed, terminal can as soon as possible access and use assistant service cell, so as to reduce the time of terminal peak speed decline, make Obtaining terminal peak rates can recover as early as possible.
In the above-mentioned technical solutions, it is preferable that also include：The main serving BS obtains multiple times in the measurement report Select the signal strength information of each candidate's assistant service cell in assistant service cell；The main serving BS is according to described each The switching-state information of candidate's assistant service cell, the switch time information and the signal strength information, from the multiple The target assistant service cell that the terminal will add is selected in candidate's assistant service cell.
In the technical scheme, switching-state information, switch time information and signal strength information can also be considered, It is small that most suitable target assistant service is selected according to the on off state of candidate's assistant service cell, switch time and signal intensity Area.Such as multiple assistant service cells on off state and in terms of switch time it is approximate, such as two assistant service cells all in Opening, and remaining opening time difference is little, now, then can be made with the stronger assistant service cell of selection signal intensity For target assistant service cell.
In the above-mentioned technical solutions, it is preferable that the main serving BS obtains multiple candidate's auxiliary in the measurement report The switching-state information and switch time information of each candidate's assistant service cell, are specifically included in serving cell：Terminal is read The switching-state information of each candidate's assistant service cell and the switch time information, and by the switching-state information Sent with the switch time information to the main serving BS, so that the main serving BS gets the on off state letter Breath and the switch time information；Or base station transmission of the main serving BS to each candidate's assistant service cell is auxiliary Serving cell addition request is helped, and the base station for receiving each candidate's assistant service cell please by the addition of assistant service cell Ask the switching-state information for replying signaling feedback and the switch time information；Or the main serving BS is to described each Macro base station where the base station of individual candidate's assistant service cell sends information acquisition request, and receives what the macro base station was sent The switching-state information of each candidate's assistant service cell and the switch time information；Or the main service base Stand and the switching-state information of each candidate's assistant service cell and the switch time are read by downlink receiver Information；Or when candidate's assistant service cell belongs under the control range of the main serving BS, and the candidate is auxiliary Help serving cell on off state and switch time as where the main serving BS base station control when, directly from the main clothes The switching-state information and the switch time information are obtained in base station where business base station；Or when the candidate aids in taking When business cell is belonged under the control range of the main serving BS, and the on off state and switch of candidate's assistant service cell Time is as during the base station control where candidate's assistant service cell, the main serving BS receives to be aided in from the candidate The switching-state information and the switch time information that base station where serving cell is sent.
In the above-mentioned technical solutions, it is preferable that the terminal is read or the main serving BS passes through downlink receiver The switching-state information and the switch time information are read, is specifically included：Detect each candidate's assistant service cell Master sync signal information, auxiliary synchronous signals information and the cycle of cell reference signals or channel state information reference signals letter Breath, to read the switching-state information and the switch time information；And/or read candidate's assistant service cell and/or time Select the radio resource control messages of the macrocell where assistant service cell, and/or reading media access control layer information and/or Physical layer information, to read the switching-state information and the switch time information.
In the technical scheme, main serving BS obtains the on off state of assistant service cell and the side of switch time information Method includes but is not limited in the following manner：1) on off state and switch time information of assistant service cell are read in terminal family, and Report to main serving BS.2) after main serving BS receives measurement report, connecing for main serving BS and assistant service cell is passed through Mouthful, request command is added using assistant service cell to obtain the on off state of assistant service cell and switch time information.3) After main serving BS receives measurement report, the switch shape of assistant service cell is obtained by the macro base station where assistant service cell State and switch time information.4) main serving BS oneself reads the on off state and switch time information of assistant service cell.5) The assistant service cell of the candidate belongs under serving BS control, and serving BS oneself determines the switch shape of the assistant service cell State and switch time, so main serving BS storage switch state itself and switch time information.6) assistant service of the candidate Cell belongs under serving BS control, oneself controlling switch state of the assistant service cell and switch time, but assistant service On off state and switch time semi-static can be informed main serving BS by cell by inter-base station interface, then main serving BS Also on off state and switch time information are stored.
In the above-mentioned technical solutions, it is preferable that the main serving BS is according to each candidate's assistant service cell Switching-state information and switch time information, from the multiple candidate's assistant service cell selecting the terminal will add Target assistant service cell, specifically include：Moment and described each is added according to the estimated assistant service cell of the terminal The switching-state information of candidate's assistant service cell is distinguished into first candidate's assistant service by the multiple candidate's assistant service is small Cell and second candidate's assistant service cell, wherein, the first candidate assistant service cell is in the estimated assistant service The cell addition moment is in the assistant service cell of opening, and the second candidate assistant service cell is described estimated auxiliary Help the assistant service cell that the serving cell addition moment is closed；By in the first candidate assistant service cell at least The switch time information of one candidate's assistant service cell is compared, and is selected from least one candidate's assistant service cell Select out the most long first object assistant service cell of the remaining opening time since the estimated assistant service cell addition moment； The switch time information of at least one candidate's assistant service cell in the second candidate assistant service cell is compared, from When following start-up time is selected at least one candidate's assistant service cell with the estimated assistant service cell addition Carve and be spaced the second most short target assistant service cell；Judging the remaining opening time of the first object assistant service cell is It is no to be more than the default opening time, when judged result is to be, the first object assistant service cell is selected as the target Assistant service cell, otherwise, the second target assistant service cell is selected as the target assistant service cell.
In the technical scheme, assistant service cell is divided into two classes according to the on off state of a certain particular moment, the spy Timing, which is carved, to be referred to after terminal receives the assistant service cell addition instruction of main serving BS, and it is small to be ready to carry out new assistant service At the time of Stochastic accessing or RRC (Radio Resource Control, wireless heterogeneous networks) connection in area, i.e., estimated auxiliary clothes Cell of the being engaged in addition moment.Two class assistant service cells refer mainly to：At the estimated assistant service cell addition moment, in opening state The first kind assistant service cell of state；In estimated the second class auxiliary at the assistant service cell addition moment, being closed Serving cell.Then selected from first kind assistant service cell since the estimated assistant service cell addition moment, it is remaining Opening time most long first object assistant service cell, and when selecting its future from the second class assistant service cell and opening Carve and it is expected that assistant service cell adds the second most short target assistant service cell of time at intervals, so as to ensure that terminal can be fast Speed addition target assistant service cell, then select two target assistant service cells are compared, if first object The remaining opening time of assistant service cell is shorter, just selects the second target assistant service cell to be added, if the first mesh The remaining opening time long enough of assistant service cell is marked, then can select the first object assistant service cell, so as to terminal It can as soon as possible access and use assistant service cell, so as to reduce the time of terminal peak speed decline so that terminal peak Value speed can be recovered as early as possible.
In the above-mentioned technical solutions, it is preferable that described to be believed according to the on off state of each candidate's assistant service cell Breath, the switch time information and the signal strength information, selected from the multiple candidate's assistant service cell described The target assistant service cell that terminal will add, is specifically included：When being added according to the estimated assistant service cell of the terminal Carve and the switching-state information of each candidate's assistant service cell is distinguished into first by the multiple candidate's assistant service is small Candidate's assistant service cell and second candidate's assistant service cell, wherein, the first candidate assistant service cell is described It is expected that the assistant service cell addition moment is in the assistant service cell of opening, the second candidate assistant service cell is In the assistant service cell that the estimated assistant service cell addition moment is closed；First candidate is aided in taking Business cell at least one candidate's assistant service cell switch time information and signal strength information be compared, from it is described to The remaining opening time since the estimated assistant service cell addition moment is selected in few candidate's assistant service cell The most strong first object assistant service cell of most long and signal intensity；Will be at least one in the second candidate assistant service cell The switch time information and signal strength information of candidate's assistant service cell are compared, and clothes are aided in from least one candidate Select that following start-up time is most short with the estimated assistant service cell addition time at intervals in business cell and signal intensity most The second strong target assistant service cell；Judge whether the remaining opening time of the first object assistant service cell is more than in advance If the opening time, when judged result is to be, the first object assistant service cell is selected as the target assistant service Cell, otherwise, the second target assistant service cell is selected as the target assistant service cell.
In the technical scheme, on off state letter can also be considered when carrying out the selection of target assistant service cell Breath, switch time information and signal strength information, selected according to the on off state of assistant service cell, switch time and signal intensity Select out most suitable target assistant service cell.Such as multiple assistant service cells on off state and in terms of switch time it is near Seemingly, such as two assistant service cells are all in opening, and remaining opening time difference is little, now, then can select The stronger assistant service cell of signal intensity is as target assistant service cell.So that the target assistant service selected is small Area had both possessed stronger signal intensity, and the fast quick-recovery of and can communicates, and lifts the usage experience of user.
According to another aspect of the present invention, a kind of cell adder-subtracter is additionally provided, for main serving BS, including：Obtain Unit is taken, after the measurement report of plus-minus triggering of terminal transmission is received, obtains multiple candidate's auxiliary in the measurement report The switching-state information and switch time information of each candidate's assistant service cell in serving cell；Selecting unit, according to described The switching-state information and switch time information of each candidate's assistant service cell, from the multiple candidate's assistant service cell Select the target assistant service cell that the terminal will add.
Traditional assistant service cell plus-minus method is not because consider the on off state of cell, it is possible that choosing a closing Cell must could access target until target assistant service cell is opened as target assistant service cell, such user Cell, so that just only main serving cell provides communication to user in a long time, the peak rate of user reduces.And at this In the technical scheme of invention, when main serving BS selects assistant service cell, consider the on off state of assistant service cell and open The time is closed, terminal can as soon as possible access and use assistant service cell, so as to reduce the time of terminal peak speed decline, make Obtaining terminal peak rates can recover as early as possible.
In the above-mentioned technical solutions, it is preferable that the acquiring unit is additionally operable to：Obtain multiple candidates in the measurement report The signal strength information of each candidate's assistant service cell in assistant service cell；The selecting unit is additionally operable to：According to described The switching-state information of each candidate's assistant service cell, the switch time information and the signal strength information, from described The target assistant service cell that the terminal will add is selected in multiple candidate's assistant service cells.
In the technical scheme, switching-state information, switch time information and signal strength information can also be considered, It is small that most suitable target assistant service is selected according to the on off state of candidate's assistant service cell, switch time and signal intensity Area.Such as multiple assistant service cells on off state and in terms of switch time it is approximate, such as two assistant service cells all in Opening, and remaining opening time difference is little, now, then can be made with the stronger assistant service cell of selection signal intensity For target assistant service cell.
In the above-mentioned technical solutions, it is preferable that acquiring unit is specifically used for：It is auxiliary to receive each candidate that the terminal is read Help the switching-state information of serving cell and the switch time information；Or to each candidate's assistant service cell Base station send the addition request of assistant service cell, and the base station for receiving each candidate's assistant service cell passes through and aids in clothes Cell of being engaged in addition request replies the switching-state information of signaling feedback and the switch time information；Or to described each Macro base station where the base station of candidate's assistant service cell sends information acquisition request, and receives the institute that the macro base station is sent State the switching-state information of each candidate's assistant service cell and the switch time information；Or pass through downlink receiver Read the switching-state information of each candidate's assistant service cell and the switch time information；Or when the time When selecting the assistant service cell to belong under the control range of the main serving BS, and the switch shape of candidate's assistant service cell When state and switch time are controlled as the base station where the main serving BS, directly from the base station where the main serving BS Obtain the switching-state information and the switch time information；When candidate's assistant service cell belongs to the main service base When under the control range stood, and the on off state of candidate's assistant service cell and switch time are by candidate's assistant service When base station where cell controls, the main serving BS receives what is sent from base station where candidate's assistant service cell The switching-state information and the switch time information.
In the technical scheme, main serving BS obtains the on off state of assistant service cell and the side of switch time information Method includes but is not limited in the following manner：1) terminal reads the on off state and switch time information of assistant service cell, and reports Accuse to main serving BS.2) after main serving BS receives measurement report, by the interface of main serving BS and assistant service cell, Request command is added using assistant service cell to obtain the on off state of assistant service cell and switch time information.3) main clothes After business base station receives measurement report, by macro base station where assistant service cell obtain assistant service cell on off state and Switch time information.4) main serving BS oneself reads the on off state and switch time information of assistant service cell.5) time The assistant service cell of choosing belongs under serving BS control, serving BS oneself determine the assistant service cell on off state and Switch time, so main serving BS storage switch state itself and switch time information.6) the assistant service cell of the candidate Belong under serving BS control, oneself controlling switch state of the assistant service cell and switch time, but assistant service cell Semi-static on off state and switch time can be informed into main serving BS by inter-base station interface, then main serving BS is also deposited On off state and switch time information are stored up.
In the above-mentioned technical solutions, it is preferable that the acquiring unit also includes：Detection unit, detect each candidate Master sync signal information, auxiliary synchronous signals information and the cell reference signals or channel condition information of assistant service cell are with reference to letter Number cycle information, to read the switching-state information and the switch time information；And/or reading unit, described in reading The radio resource control messages of macrocell where candidate's assistant service cell and/or candidate's assistant service cell, and/or Reading media access control layer information and/or physical layer information, believed with reading the switching-state information and the switch time Breath.
In the technical scheme, main serving BS, which reads information, to be included：Detect the PSS (Primary of assistant service cell Synchronization Signal, master sync signal) and/SSS (Secondary Synchronization Signal, it is auxiliary same Walk signal) and CRS (Cell-specific Reference Signal, cell reference signals)/CSI-RS (Channel State Information Reference Signal, channel state information reference signals) cycle；It is small to detect assistant service The rrc message (including system information) of macrocell where area or assistant service cell, MAC (Medium AccessControl, Medium education) layer information and/or physical layer information.It is grand small where main serving BS detection assistant service cell or its , it is necessary to assistant service cell or macrocell system where it when the system information in area is to obtain on off state and switch time Information sends its on off state and switch time information.
In the above-mentioned technical solutions, it is preferable that the selecting unit specifically includes：Division unit, according to the terminal It is expected that the switching-state information of assistant service cell addition moment and each candidate's assistant service cell is by the multiple time Select assistant service is small to be distinguished into first candidate's assistant service cell and second candidate's assistant service cell, wherein, described first waits It is that the assistant service cell of opening is at the estimated assistant service cell addition moment to select assistant service cell, described Second candidate's assistant service cell is that the assistant service being closed at the estimated assistant service cell addition moment is small Area；First comparing unit, by the first candidate assistant service cell during the switch of at least one candidate's assistant service cell Between information be compared, select from least one candidate's assistant service cell and add from the estimated assistant service cell Added-time carves beginning remaining opening time most long first object assistant service cell；Second comparing unit, by second candidate The switch time information of at least one candidate's assistant service cell is compared in assistant service cell, from least one time Select selected in assistant service cell following start-up time and the estimated assistant service cell addition time at intervals it is most short the Two target assistant service cells；Cell selection unit, judging the remaining opening time of the first object assistant service cell is It is no to be more than the default opening time, when judged result is to be, the first object assistant service cell is selected as the target Assistant service cell, otherwise, the second target assistant service cell is selected as the target assistant service cell.
In the technical scheme, assistant service cell is divided into two classes according to the on off state of a certain particular moment, the spy Timing, which is carved, to be referred to after terminal receives the assistant service cell addition instruction of main serving BS, and it is small to be ready to carry out new assistant service At the time of Stochastic accessing or the RRC connection in area, i.e., the estimated assistant service cell addition moment.Two class assistant service cells are main Refer to：At the estimated assistant service cell addition moment, the first kind assistant service cell in opening；In the estimated auxiliary Serving cell adds moment, the second class assistant service cell being closed.Then from first kind assistant service cell Select since the estimated assistant service cell addition moment, most long first object assistant service cell of remaining opening time, And selected from the second class assistant service cell its following start-up time with it is expected that assistant service cell addition time at intervals most The second short target assistant service cell, so as to ensure that terminal can quickly add target assistant service cell, then it will select Two target assistant service cells be compared, if the remaining opening time of first object assistant service cell is shorter, just The second target assistant service cell is selected to be added, if the remaining opening time of first object assistant service cell is enough It is long, then the first object assistant service cell can be selected, so as to which terminal can as soon as possible access and use assistant service cell, So as to reduce the time of terminal peak speed decline so that terminal peak rates can recover as early as possible.
In the above-mentioned technical solutions, it is preferable that the selecting unit also includes：Division unit, according to the pre- of the terminal The switching-state information of assistant service cell addition moment and each candidate's assistant service cell is counted by the multiple candidate Assistant service is small to be distinguished into first candidate's assistant service cell and second candidate's assistant service cell, wherein, first candidate Assistant service cell is to add the assistant service cell that the moment is in opening in the estimated assistant service cell, described the Two candidate's assistant service cells are the assistant service cell being closed at the estimated assistant service cell addition moment； First comparing unit, the switch time of at least one candidate's assistant service cell in the first candidate assistant service cell is believed Breath and signal strength information are compared, and are selected from least one candidate's assistant service cell from the estimated auxiliary The serving cell addition moment starts the first object assistant service cell that the remaining opening time is most long and signal intensity is most strong；Second Comparing unit, by the switch time information of at least one candidate's assistant service cell in the second candidate assistant service cell and Signal strength information is compared, selected from least one candidate's assistant service cell following start-up time with it is described It is expected that assistant service cell addition the second target assistant service cell that time at intervals is most short and signal intensity is most strong；Cell selects Unit, judges whether the remaining opening time of the first object assistant service cell is more than the default opening time, is judging to tie Fruit is when being, selects the first object assistant service cell as the target assistant service cell, otherwise, selects described the Two target assistant service cells are as the target assistant service cell.
In the technical scheme, on off state letter can also be considered when carrying out the selection of target assistant service cell Breath, switch time information and signal strength information, selected according to the on off state of assistant service cell, switch time and signal intensity Select out most suitable target assistant service cell.Such as multiple assistant service cells on off state and in terms of switch time it is near Seemingly, such as two assistant service cells are all in opening, and remaining opening time difference is little, now, then can select The stronger assistant service cell of signal intensity is as target assistant service cell.So that the target assistant service selected is small Area had both possessed stronger signal intensity, and the fast quick-recovery of and can communicates, and lifts the usage experience of user.
According to another aspect of the present invention, a kind of cell adder-subtracter is additionally provided, for terminal, including：Reading unit, Read the switching-state information and switch time information of each candidate's assistant service cell in multiple candidate's assistant service cells；Hair Unit is sent, the switching-state information and the switch time information are sent to main serving BS.
In the technical scheme, when main serving BS needs to obtain switch time information and switching-state information, terminal The on off state and the information of switch time of candidate's assistant service cell can be read, is reported to main serving BS.This report can To be sent together with signal strength measurement report.
In the above-mentioned technical solutions, it is preferable that the reading unit is specifically used for：Detect each candidate's assistant service Master sync signal information, auxiliary synchronous signals information and the cycle of cell reference signals or channel state information reference signals of cell Information, to read the switching-state information and the switch time information；And/or reading each candidate's assistant service is small The radio resource control messages of macrocell where area and/or each candidate's assistant service cell, and/or reading media Access control layer information and/or physical layer information, to read the switching-state information and the switch time information.
In the technical scheme, terminal, which reads information, to be included：Detect the PSS/SSS and CRS/CSI- of assistant service cell RS cycle；The rrc message (including system information) of detection assistant service cell or assistant service cell place macrocell, MAC layer information and/or physical layer information.The system information that assistant service cell or the macrocell where it are detected when terminal is come , it is necessary to which assistant service cell or the macrocell where it send it with system information when obtaining on off state and switch time On off state and switch time information.
In accordance with a further aspect of the present invention, a kind of base station is additionally provided, including：Any one of above-mentioned technical proposal Cell adder-subtracter for base station.The base station has identical technology with the above-mentioned cell adder-subtracter for main serving BS Effect, it will not be repeated here.
In accordance with a further aspect of the present invention, a kind of terminal is additionally provided, including：Any one of above-mentioned technical proposal Cell adder-subtracter for terminal.The terminal has identical technique effect with the above-mentioned cell adder-subtracter for terminal, It will not be repeated here.
Pass through above technical scheme so that terminal can as soon as possible access and use assistant service cell, so as to reduce end The time for holding peak rate to decline so that terminal peak rates can recover as early as possible.
Brief description of the drawings
Fig. 1 shows the flow chart of cell plus-minus method according to an embodiment of the invention；
Fig. 2 shows the block diagram of cell adder-subtracter according to an embodiment of the invention；
Fig. 3 shows the block diagram of cell adder-subtracter according to another embodiment of the invention；
Fig. 4 shows the block diagram of main serving BS according to an embodiment of the invention；
Fig. 5 shows the block diagram of terminal according to an embodiment of the invention；
Fig. 6 shows the particular flow sheet of cell plus-minus method according to an embodiment of the invention；
Fig. 7 shows the on off state and switch time schematic diagram of assistant service cell according to an embodiment of the invention；
Fig. 8 shows the schematic diagram of assistant service cell selecting method according to an embodiment of the invention；
Fig. 9 shows the schematic diagram of assistant service cell selecting method according to another embodiment of the invention；
Figure 10 shows the acquisition of switching-state information according to an embodiment of the invention and switch time information Journey schematic diagram.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also To be different from other modes described here using other to implement, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.
Fig. 1 shows the flow chart of cell plus-minus method according to an embodiment of the invention.
As shown in figure 1, cell plus-minus method according to an embodiment of the invention, including：Step 102, main serving BS exists After the measurement report of plus-minus triggering for receiving terminal transmission, obtain in the measurement report in multiple candidate's assistant service cells The switching-state information and switch time information of each candidate's assistant service cell；Step 104, the main serving BS is according to institute The switching-state information and switch time information of each candidate's assistant service cell are stated, from the multiple candidate's assistant service cell In select the target assistant service cell that the terminal will add.
Traditional assistant service cell plus-minus method is not because consider the on off state of cell, it is possible that choosing a closing Cell must could access target until target assistant service cell is opened as target assistant service cell, such user Cell, so that just only main serving cell provides communication to user in a long time, the peak rate of user reduces.And at this In the technical scheme of invention, when main serving BS selects assistant service cell, consider the on off state of assistant service cell and open The time is closed, terminal can as soon as possible access and use assistant service cell, so as to reduce the time of terminal peak speed decline, make Obtaining terminal peak rates can recover as early as possible.
In the above-mentioned technical solutions, it is preferable that also include：The main serving BS obtains multiple times in the measurement report Select the signal strength information of each candidate's assistant service cell in assistant service cell；The main serving BS is according to described each The switching-state information of candidate's assistant service cell, the switch time information and the signal strength information, from the multiple The target assistant service cell that the terminal will add is selected in candidate's assistant service cell.
In the technical scheme, switching-state information, switch time information and signal strength information can also be considered, It is small that most suitable target assistant service is selected according to the on off state of candidate's assistant service cell, switch time and signal intensity Area.Such as multiple assistant service cells on off state and in terms of switch time it is approximate, such as two assistant service cells all in Opening, and remaining opening time difference is little, now, then can be made with the stronger assistant service cell of selection signal intensity For target assistant service cell.
In the above-mentioned technical solutions, it is preferable that the main serving BS obtains multiple candidate's auxiliary in the measurement report The switching-state information and switch time information of each candidate's assistant service cell, are specifically included in serving cell：Terminal is read The switching-state information of each candidate's assistant service cell and the switch time information, and by the switching-state information Sent with the switch time information to the main serving BS, so that the main serving BS gets the on off state letter Breath and the switch time information；Or base station transmission of the main serving BS to each candidate's assistant service cell is auxiliary Serving cell addition request is helped, and the base station for receiving each candidate's assistant service cell please by the addition of assistant service cell Ask the switching-state information for replying signaling feedback and the switch time information；Or the main serving BS is to described each Macro base station where the base station of individual candidate's assistant service cell sends information acquisition request, and receives what the macro base station was sent The switching-state information of each candidate's assistant service cell and the switch time information；Or the main service base Stand and the switching-state information of each candidate's assistant service cell and the switch time are read by downlink receiver Information；Or when candidate's assistant service cell belongs under the control range of the main serving BS, and the candidate is auxiliary Help serving cell on off state and switch time as where the main serving BS base station control when, directly from the main clothes The switching-state information and the switch time information are obtained in base station where business base station；Or when the candidate aids in taking When business cell is belonged under the control range of the main serving BS, and the on off state and switch of candidate's assistant service cell Time is as during the base station control where candidate's assistant service cell, the main serving BS receives to be aided in from the candidate The switching-state information and the switch time information that base station where serving cell is sent.
In the above-mentioned technical solutions, it is preferable that the terminal is read or the main serving BS passes through downlink receiver The switching-state information and the switch time information are read, is specifically included：Detect each candidate's assistant service cell Master sync signal information, auxiliary synchronous signals information and the cycle of cell reference signals or channel state information reference signals letter Breath, to read the switching-state information and the switch time information；And/or read candidate's assistant service cell and/or time Select the radio resource control messages of the macrocell where assistant service cell, and/or reading media access control layer information and/or Physical layer information, to read the switching-state information and the switch time information.
In the technical scheme, main serving BS obtains the on off state of assistant service cell and the side of switch time information Method includes but is not limited in the following manner：1) on off state and switch time information of assistant service cell are read in terminal family, and Report to main serving BS.2) after main serving BS receives measurement report, connecing for main serving BS and assistant service cell is passed through Mouthful, request command is added using assistant service cell to obtain the on off state of assistant service cell and switch time information.3) After main serving BS receives measurement report, the switch shape of assistant service cell is obtained by the macro base station where assistant service cell State and switch time information.4) main serving BS oneself reads the on off state and switch time information of assistant service cell.5) The assistant service cell of the candidate belongs under serving BS control, and serving BS oneself determines the switch shape of the assistant service cell State and switch time, so main serving BS storage switch state itself and switch time information.6) assistant service of the candidate Cell belongs under serving BS control, oneself controlling switch state of the assistant service cell and switch time, but assistant service On off state and switch time semi-static can be informed main serving BS by cell by inter-base station interface, then main serving BS Also on off state and switch time information are stored.
In the above-mentioned technical solutions, it is preferable that the main serving BS is according to each candidate's assistant service cell Switching-state information and switch time information, from the multiple candidate's assistant service cell selecting the terminal will add Target assistant service cell, specifically include：Moment and described each is added according to the estimated assistant service cell of the terminal The switching-state information of candidate's assistant service cell is distinguished into first candidate's assistant service by the multiple candidate's assistant service is small Cell and second candidate's assistant service cell, wherein, the first candidate assistant service cell is in the estimated assistant service The cell addition moment is in the assistant service cell of opening, and the second candidate assistant service cell is described estimated auxiliary Help the assistant service cell that the serving cell addition moment is closed；By in the first candidate assistant service cell at least The switch time information of one candidate's assistant service cell is compared, and is selected from least one candidate's assistant service cell Select out the most long first object assistant service cell of the remaining opening time since the estimated assistant service cell addition moment； The switch time information of at least one candidate's assistant service cell in the second candidate assistant service cell is compared, from When following start-up time is selected at least one candidate's assistant service cell with the estimated assistant service cell addition Carve and be spaced the second most short target assistant service cell；Judging the remaining opening time of the first object assistant service cell is It is no to be more than the default opening time, when judged result is to be, the first object assistant service cell is selected as the target Assistant service cell, otherwise, the second target assistant service cell is selected as the target assistant service cell.
In the technical scheme, assistant service cell is divided into two classes according to the on off state of a certain particular moment, the spy Timing, which is carved, to be referred to after terminal receives the assistant service cell addition instruction of main serving BS, and it is small to be ready to carry out new assistant service At the time of Stochastic accessing or the RRC connection in area, i.e., the estimated assistant service cell addition moment.Two class assistant service cells are main Refer to：At the estimated assistant service cell addition moment, the first kind assistant service cell in opening；In the estimated auxiliary Serving cell adds moment, the second class assistant service cell being closed.Then from first kind assistant service cell Select since the estimated assistant service cell addition moment, most long first object assistant service cell of remaining opening time, And selected from the second class assistant service cell its following start-up time with it is expected that assistant service cell addition time at intervals most The second short target assistant service cell, so as to ensure that terminal can quickly add target assistant service cell, then it will select Two target assistant service cells be compared, if the remaining opening time of first object assistant service cell is shorter, just The second target assistant service cell is selected to be added, if the remaining opening time of first object assistant service cell is enough It is long, then the first object assistant service cell can be selected, so as to which terminal can as soon as possible access and use assistant service cell, So as to reduce the time of terminal peak speed decline so that terminal peak rates can recover as early as possible.
In the above-mentioned technical solutions, it is preferable that described to be believed according to the on off state of each candidate's assistant service cell Breath, the switch time information and the signal strength information, selected from the multiple candidate's assistant service cell described The target assistant service cell that terminal will add, is specifically included：When being added according to the estimated assistant service cell of the terminal Carve and the switching-state information of each candidate's assistant service cell is distinguished into first by the multiple candidate's assistant service is small Candidate's assistant service cell and second candidate's assistant service cell, wherein, the first candidate assistant service cell is described It is expected that the assistant service cell addition moment is in the assistant service cell of opening, the second candidate assistant service cell is In the assistant service cell that the estimated assistant service cell addition moment is closed；First candidate is aided in taking Business cell at least one candidate's assistant service cell switch time information and signal strength information be compared, from it is described to The remaining opening time since the estimated assistant service cell addition moment is selected in few candidate's assistant service cell The most strong first object assistant service cell of most long and signal intensity；Will be at least one in the second candidate assistant service cell The switch time information and signal strength information of candidate's assistant service cell are compared, and clothes are aided in from least one candidate Select that following start-up time is most short with the estimated assistant service cell addition time at intervals in business cell and signal intensity most The second strong target assistant service cell；Judge whether the remaining opening time of the first object assistant service cell is more than in advance If the opening time, when judged result is to be, the first object assistant service cell is selected as the target assistant service Cell, otherwise, the second target assistant service cell is selected as the target assistant service cell.
In the technical scheme, on off state letter can also be considered when carrying out the selection of target assistant service cell Breath, switch time information and signal strength information, selected according to the on off state of assistant service cell, switch time and signal intensity Select out most suitable target assistant service cell.Such as multiple assistant service cells on off state and in terms of switch time it is near Seemingly, such as two assistant service cells are all in opening, and remaining opening time difference is little, now, then can select The stronger assistant service cell of signal intensity is as target assistant service cell.So that the target assistant service selected is small Area had both possessed stronger signal intensity, and the fast quick-recovery of and can communicates, and lifts the usage experience of user.
Fig. 2 shows the block diagram of cell adder-subtracter according to an embodiment of the invention.
As shown in Fig. 2 cell adder-subtracter 200 according to an embodiment of the invention, for main serving BS, bag Include：Acquiring unit 202, after the measurement report of plus-minus triggering of terminal transmission is received, obtain multiple in the measurement report The switching-state information and switch time information of each candidate's assistant service cell in candidate's assistant service cell；Selecting unit 204, it is auxiliary from the multiple candidate according to the switching-state information and switch time information of each candidate's assistant service cell Help in serving cell and select the target assistant service cell that the terminal will add.
Traditional assistant service cell plus-minus method is not because consider the on off state of cell, it is possible that choosing a closing Cell must could access target until target assistant service cell is opened as target assistant service cell, such user Cell, so that just only main serving cell provides communication to user in a long time, the peak rate of user reduces.And at this In the technical scheme of invention, when main serving BS selects assistant service cell, consider the on off state of assistant service cell and open The time is closed, terminal can as soon as possible access and use assistant service cell, so as to reduce the time of terminal peak speed decline, make Obtaining terminal peak rates can recover as early as possible.
In the above-mentioned technical solutions, it is preferable that the acquiring unit 202 is additionally operable to：Obtain multiple in the measurement report The signal strength information of each candidate's assistant service cell in candidate's assistant service cell；The selecting unit 204 is additionally operable to：Root According to the switching-state information of each candidate's assistant service cell, the switch time information and the signal strength information, The target assistant service cell that the terminal will add is selected from the multiple candidate's assistant service cell.
In the technical scheme, switching-state information, switch time information and signal strength information can also be considered, It is small that most suitable target assistant service is selected according to the on off state of candidate's assistant service cell, switch time and signal intensity Area.Such as multiple assistant service cells on off state and in terms of switch time it is approximate, such as two assistant service cells all in Opening, and remaining opening time difference is little, now, then can be made with the stronger assistant service cell of selection signal intensity For target assistant service cell.
In the above-mentioned technical solutions, it is preferable that acquiring unit 202 is specifically used for：Receive each time that the terminal is read Select the switching-state information of assistant service cell and the switch time information；Or to each candidate's assistant service The base station of cell sends the addition request of assistant service cell, and the base station for receiving each candidate's assistant service cell pass through it is auxiliary Serving cell addition request is helped to reply the switching-state information of signaling feedback and the switch time information；Or to described Macro base station where the base station of each candidate's assistant service cell sends information acquisition request, and receives the macro base station and send Each candidate's assistant service cell the switching-state information and the switch time information；Or connect by descending Receive the machine-readable switching-state information for taking each candidate's assistant service cell and the switch time information；Or work as institute When stating candidate's assistant service cell and belonging under the control range of the main serving BS, and candidate's assistant service cell is opened When off status and switch time are controlled as the base station where the main serving BS, directly from the base where the main serving BS The switching-state information and the switch time information are obtained in standing；When candidate's assistant service cell belongs to the main clothes When being engaged under the control range of base station, and the on off state of candidate's assistant service cell and switch time are aided in by the candidate When base station where serving cell controls, the main serving BS is received from base station hair where candidate's assistant service cell The switching-state information sent and the switch time information.
In the technical scheme, main serving BS obtains the on off state of assistant service cell and the side of switch time information Method includes but is not limited in the following manner：1) terminal reads the on off state and switch time information of assistant service cell, and reports Accuse to main serving BS.2) after main serving BS receives measurement report, by the interface of main serving BS and assistant service cell, Request command is added using assistant service cell to obtain the on off state of assistant service cell and switch time information.3) main clothes After business base station receives measurement report, by macro base station where assistant service cell obtain assistant service cell on off state and Switch time information.4) main serving BS oneself reads the on off state and switch time information of assistant service cell.5) time The assistant service cell of choosing belongs under serving BS control, serving BS oneself determine the assistant service cell on off state and Switch time, so main serving BS storage switch state itself and switch time information.6) the assistant service cell of the candidate Belong under serving BS control, oneself controlling switch state of the assistant service cell and switch time, but assistant service cell Semi-static on off state and switch time can be informed into main serving BS by inter-base station interface, then main serving BS is also deposited On off state and switch time information are stored up.
In the above-mentioned technical solutions, it is preferable that the acquiring unit 202 also includes：Detection unit 2022, described in detection Master sync signal information, auxiliary synchronous signals information and cell reference signals or the channel status letter of each candidate's assistant service cell The cycle information of reference signal is ceased, to read the switching-state information and the switch time information；And/or reading unit 2024, read the Radio Resource of the macrocell where candidate's assistant service cell and/or candidate's assistant service cell Control information, and/or reading media access control layer information and/or physical layer information, with read the switching-state information and The switch time information.
In the technical scheme, main serving BS, which reads information, to be included：Detect assistant service cell PSS/SSS and CRS/CSI-RS cycle；The rrc message of detection assistant service cell or assistant service cell place macrocell (including system Information), MAC layer information and/or physical layer information.When main serving BS detects assistant service cell or macrocell where it , it is necessary to assistant service cell or macrocell system information where it when system information is to obtain on off state and switch time To send its on off state and switch time information.
In the above-mentioned technical solutions, it is preferable that the selecting unit 204 specifically includes：Division unit 2042, according to institute The estimated assistant service cell addition moment of terminal and the switching-state information of each candidate's assistant service cell are stated by institute State that multiple candidate's assistant services are small to be distinguished into first candidate's assistant service cell and second candidate's assistant service cell, wherein, institute It is to be in the assistant service of opening at the estimated assistant service cell addition moment to state first candidate's assistant service cell Cell, the second candidate assistant service cell are auxiliary to be closed at the estimated assistant service cell addition moment Help serving cell；First comparing unit 2044, by least one candidate's assistant service in the first candidate assistant service cell The switch time information of cell is compared, and is selected from least one candidate's assistant service cell from described estimated auxiliary The serving cell addition moment is helped to start most long first object assistant service cell of remaining opening time；Second comparing unit 2046, the switch time information of at least one candidate's assistant service cell in the second candidate assistant service cell is compared Compared with selecting following start-up time from least one candidate's assistant service cell and add with the estimated assistant service cell Add the second target assistant service cell that time at intervals is most short；Cell selection unit 2048, judge the first object auxiliary clothes Whether the remaining opening time for cell of being engaged in is more than the default opening time, when judged result is to be, selects the first object auxiliary Serving cell is helped otherwise, to be selected as the target assistant service cell described in the second target assistant service cell conduct Target assistant service cell.
In the technical scheme, assistant service cell is divided into two classes according to the on off state of a certain particular moment, the spy Timing, which is carved, to be referred to after terminal receives the assistant service cell addition instruction of main serving BS, and it is small to be ready to carry out new assistant service At the time of Stochastic accessing or the RRC connection in area, i.e., the estimated assistant service cell addition moment.Two class assistant service cells are main Refer to：At the estimated assistant service cell addition moment, the first kind assistant service cell in opening；In the estimated auxiliary Serving cell adds moment, the second class assistant service cell being closed.Then from first kind assistant service cell Select since the estimated assistant service cell addition moment, most long first object assistant service cell of remaining opening time, And selected from the second class assistant service cell its following start-up time with it is expected that assistant service cell addition time at intervals most The second short target assistant service cell, so as to ensure that terminal can quickly add target assistant service cell, then it will select Two target assistant service cells be compared, if the remaining opening time of first object assistant service cell is shorter, just The second target assistant service cell is selected to be added, if the remaining opening time of first object assistant service cell is enough It is long, then the first object assistant service cell can be selected, so as to which terminal can as soon as possible access and use assistant service cell, So as to reduce the time of terminal peak speed decline so that terminal peak rates can recover as early as possible.
In the above-mentioned technical solutions, it is preferable that the selecting unit 204 also includes：Division unit 2042, according to described The estimated assistant service cell addition moment of terminal and the switching-state information of each candidate's assistant service cell are by described in Multiple candidate's assistant services are small to be distinguished into first candidate's assistant service cell and second candidate's assistant service cell, wherein, it is described First candidate's assistant service cell is that the assistant service for being in opening at the estimated assistant service cell addition moment is small Area, the second candidate assistant service cell are the auxiliary being closed at the estimated assistant service cell addition moment Serving cell；First comparing unit 2044 is small by least one candidate's assistant service in the first candidate assistant service cell The switch time information and signal strength information in area are compared, and are selected from least one candidate's assistant service cell The first object that the remaining opening time is most long and signal intensity is most strong since the estimated assistant service cell addition moment is auxiliary Help serving cell；Second comparing unit 2046, by least one candidate's assistant service in the second candidate assistant service cell The switch time information and signal strength information of cell are compared, and are selected from least one candidate's assistant service cell Go out following start-up time and estimated assistant service cell addition second target that time at intervals is most short and signal intensity is most strong Assistant service cell；Cell selection unit 2048, judge the first object assistant service cell the remaining opening time whether More than the default opening time, when judged result is to be, select the first object assistant service cell auxiliary as the target Serving cell is helped, otherwise, selects the second target assistant service cell as the target assistant service cell.
In the technical scheme, on off state letter can also be considered when carrying out the selection of target assistant service cell Breath, switch time information and signal strength information, selected according to the on off state of assistant service cell, switch time and signal intensity Select out most suitable target assistant service cell.Such as multiple assistant service cells on off state and in terms of switch time it is near Seemingly, such as two assistant service cells are all in opening, and remaining opening time difference is little, now, then can select The stronger assistant service cell of signal intensity is as target assistant service cell.So that the target assistant service selected is small Area had both possessed stronger signal intensity, and the fast quick-recovery of and can communicates, and lifts the usage experience of user.
Fig. 3 shows the block diagram of cell adder-subtracter according to another embodiment of the invention.
As shown in figure 3, cell adder-subtracter 300 according to another embodiment of the invention, for terminal, including：Read Unit 302 is taken, reads the switching-state information and switch of each candidate's assistant service cell in multiple candidate's assistant service cells Temporal information；Transmitting element 304, the switching-state information and the switch time information are sent to main serving BS.
In the technical scheme, when main serving BS needs to obtain switch time information and switching-state information, terminal The on off state and the information of switch time of candidate's assistant service cell can be read, is reported to main serving BS.This report can To be sent together with signal strength measurement report.
In the above-mentioned technical solutions, it is preferable that the reading unit 302 is specifically used for：Detect each candidate's auxiliary Master sync signal information, auxiliary synchronous signals information and the cell reference signals of serving cell or channel state information reference signals Cycle information, to read the switching-state information and the switch time information；And/or read each candidate and aid in clothes The radio resource control messages of macrocell where cell of being engaged in and/or each candidate's assistant service cell, and/or read Media access control layer information and/or physical layer information, to read the switching-state information and the switch time information.
In the technical scheme, terminal, which reads information, to be included：Detect the PSS/SSS and CRS/CSI- of assistant service cell RS cycle；The rrc message (including system information) of detection assistant service cell or assistant service cell place macrocell, MAC layer information and/or physical layer information.The system information that assistant service cell or the macrocell where it are detected when terminal is come , it is necessary to which assistant service cell or the macrocell where it send it with system information when obtaining on off state and switch time On off state and switch time information.
Fig. 4 shows the block diagram of base station according to an embodiment of the invention.
As shown in figure 4, base station 400 according to an embodiment of the invention, including：Used any one of above-mentioned technical proposal In the cell adder-subtracter 200 of main serving BS.The base station has phase with the above-mentioned cell adder-subtracter 200 for serving BS Same technique effect, will not be repeated here.
Fig. 5 shows the block diagram of terminal according to an embodiment of the invention.
As shown in figure 5, terminal 500 according to an embodiment of the invention, including：It is used for terminal described in above-mentioned technical proposal Cell adder-subtracter 300.The terminal has identical technique effect with the above-mentioned cell adder-subtracter 300 for terminal, This is repeated no more.
Technical scheme is described in detail with reference to Fig. 6 to Figure 10.
As shown in fig. 6, the idiographic flow of cell plus-minus method according to an embodiment of the invention includes：
Step 602, main serving BS receives the signal strength measurement report of terminal transmission.
Step 604, main serving BS obtains the auxiliary in measurement report after the plus-minus for receiving terminal triggers measurement report The on off state and switch time information of serving cell.When serving BS considers the on off state and switch of assistant service cell Between, and/or in measurement report each assistant service cell signal intensity, it is small to select optimal target assistant service for the terminal Area.
Main serving BS consider assistant service cell on off state and switch time and wrap the step of selection target cell Include：
Step 606, assistant service cell is divided into first and second liang of classes according to the on off state of a certain particular moment, when this is specific Carve and refer to after terminal receives the assistant service cell addition instruction of main serving BS, be ready to carry out new assistant service cell At the time of Stochastic accessing or RRC connections, i.e., the estimated assistant service cell addition moment.Two class assistant service cells refer mainly to：First Class (i.e. the first kind) refers at the moment, the assistant service cell in opening；Class B (i.e. the second class) refers at this Carve, the assistant service cell being closed.Wherein, on off state example is as shown in fig. 7, when user (i.e. terminal) #1 is in t2 When being ready at all times to perform Stochastic accessing or RRC connections, #1 is in opening for assistant service cell, then for user #1 For, assistant service cell #1 should be divided into Class A.When user #2 is ready at all times to perform Stochastic accessing or RRC connections in t4, Assistant service cell #1 is closed, then for user #2, assistant service cell #1 should be divided into Class B.
Step 608, main serving BS selects the best assistant service cell of Class A according to remaining opening time length.Class A is selected Select criterion：User enough of remaining opening time is selected to complete the assistant service cell of RRC connection procedures.In these cells, Further, the assistant service cell that the remaining opening time is most long is selected.
Wherein, remaining opening time example is as shown in fig. 7, when user #1 is ready at all times execution Stochastic accessing or RRC in t2 During connection, assistant service cell #1 is in opening, and its remaining opening time refers to this period of time of t3-t2, i.e., not Come the time also in the state that continuously opens.It is assumed here that the opening time continues 100ms, i.e. this period of time of t3-t1 every time.
Step 610, main serving BS selects the best assistant service of Class B according to the length apart from the following start-up time time Cell.Class B selection criterion：Chosen distance future start-up time time most short assistant service cell.
Wherein, apart from following start-up time time example as shown in fig. 7, being connect at random when user #2 is ready at all times to perform in t4 Enter or during RRC connections, assistant service cell #1 is closed, and it refers to t5-t4 apart from the following start-up time time This period of time, i.e., future how long after, the cell will enter opening.It is assumed here that the shut-in time continues every time This period of time of 100ms, i.e. t5-t3.(wherein, the present invention refers to remaining opening time and/or distance signified switch time not Carry out the start-up time time.) further compare the best assistant service cell of Class A and the best assistant service cell of Class B.
Step 612, main serving BS selects best assistant service cell as target assistant service cell, main serving BS After choosing target assistant service cell, the addition instruction of assistant service cell is sent to the user terminal, terminal receives auxiliary Serving cell addition instruction, starts assistant service cell adding procedure, and completes assistant service cell adding procedure, establishes logical Letter.Specifically, it is also very long if the best assistant service cell of Class A is after user completes assistant service cell adding procedure Time be in opening, be easy to the communication of user's fast quick-recovery, then the best assistant service cell of selection Class A is as mesh Mark assistant service cell；If the remaining opening time of the best assistant service cell of Class A not enough completes the assistant service of user Cell adding procedure, or can enter closed mode at once after the assistant service cell adding procedure of user is completed；And second The best assistant service cell of class can enter prolonged opening in a short time, then the best auxiliary clothes of selection Class B Cell of being engaged in is as target assistant service cell.
Describe the system of selection of the target assistant service cell of the present invention in detail with reference to two specific embodiments.
Embodiment 1：The one given below example 1 based on off state and switch time selection target cell：
When user is preparing Stochastic accessing or RRC connections the time as shown in Figure 8, assistant service cell #1 and #2 are in and opened State is opened, and assistant service cell #3 and #4 are closed.
So class AB assistant service cell classification situation is as follows：Class A is #1 and #2, and Class B is #3 and #4.
The best assistant service cell of Class A is selected according to the remaining opening time：Assistant service cell #2 remaining unlatching Time is longer, so to be chosen as Class A best by assistant service cell #2.
According to apart from the best assistant service cell of following start-up time selection of time Class B：Assistant service cell #3 distances The following start-up time time is most short, so to be chosen as Class B best by assistant service cell #3.
Compare that Class A is preferably best with Class B, the best assistant service cell #2 of the Class A remaining opening time is enough long, institute Target cell is chosen as with assistant service cell #2.
Embodiment 2：The one given below example based on off state and switch time selection target assistant service cell 2。
When user is preparing Stochastic accessing or RRC connections the time as shown in Figure 9, assistant service cell #1 and #2 are in and opened State is opened, and assistant service cell #3 and #4 are closed.
So class AB assistant service cell classification situation is as follows：Class A is #1 and #2, and Class B is #3 and #4.
The best assistant service cell of Class A is selected according to the remaining opening time：Assistant service cell #2 remaining unlatching Time is longer, so to be chosen as Class A best by assistant service cell #2.
According to apart from the best assistant service cell of following start-up time selection of time Class B：Assistant service cell #3 distances The following start-up time time is most short, so to be chosen as Class B best by assistant service cell #3.
Compare that Class A is preferably best with Class B, the best assistant service cell #2 of the Class A remaining opening time is too short, and The best assistant service cell #3 of Class B can just enter the opening time of long period at once, so assistant service cell #3 is chosen as Target cell.
When carrying out Target cell selection, selected except above-mentioned according to switching-state information and switch time information Select, main serving BS, which can also combine, to be considered on off state and the signal intensity of switch time and assistant service cell and select Target cell.Specifically, main serving BS joint considers that on off state and the signal of switch time and assistant service cell are strong Degree and the criterion of selection target assistant service cell is as follows：If multiple assistant service cells are on off state and switch time side Face is approximate, for example two assistant service cells are all in opening, and remaining opening time difference is little, then selection letter Number strong assistant service cell of intensity is as target assistant service cell.
Wherein, in above-mentioned steps 604, main serving BS obtains the on off state and switch time letter of assistant service cell The method of breath includes：
1st, terminal reads the on off state and the information of switch time of assistant service cell, reports to main serving BS.Should Report can be sent together with signal strength measurement report.
Terminal, which reads information, to be included：The cycle for detecting the PSS/SSS or CRS/CSI-RS of assistant service cell is switched State；The rrc message (including system information) of macrocell, MAC layer where detecting assistant service cell or assistant service cell Information and/or physical layer information obtain switch time.Include various implicit and explicit configured informations.Wherein, user is worked as , it is necessary to aid in when detecting the system information of assistant service cell or macrocell where it to obtain on off state and switch time Serving cell or macrocell where it send its on off state and switch time information with system information.
2nd, main serving BS obtains (as shown in Figure 10) by inter-base station interface (X2), and such as main serving BS sends auxiliary clothes Assistant service cell base station is given in business cell addition request, and assistant service cell base station adds request by assistant service cell and replied Its on off state of signaling feedback and switch time information.
3rd, main serving BS is obtained by the macro base station where assistant service cell.If the switch of assistant service cell is all It is to be controlled by macro base station, then macro base station is the on off state and switch time information for having each assistant service cell, so Macro base station can provide these information to main serving BS.If the switch of assistant service cell oneself can also control, then Need assistant service cell that the on off state of oneself and switch time information are all informed into macro base station, such macro base station can also carry Main serving BS is given for these information.
4th, main serving BS utilizes the downlink receiver of oneself, goes to read the switch shape of assistant service cell as terminal State and switch time information.
Main serving BS, which reads information, to be included：The cycle for detecting the PSS/SSS or CRS/CSI-RS of assistant service cell is obtained Obtain on off state；The rrc message (including system information) of detection assistant service cell or assistant service cell place macrocell, MAC layer information and/or physical layer information obtain switch time.Include various implicit and explicit configured informations.Wherein, when Main serving BS detection assistant service cell or the system information of macrocell where it obtain on off state and switch time When, it is necessary to assistant service cell or its where macrocell send its on off state and switch time information with system information.
5th, when candidate's assistant service cell belongs under the control range of main serving BS, and the switch of assistant service cell When state and the switch time serving BS where main serving cell, i.e. main serving BS control, main serving BS is inherently deposited Store up the on off state and switch time information of assistant service cell, it is not necessary to extra to obtain.
6th, when candidate's assistant service cell belongs under the control range of main serving BS, and the switch of assistant service cell When state and switch time, base station controlled where assistant service cell, what base station where assistant service cell can be semi-static will hold Off status and switch time give main serving BS by the direct interface report in base station.
Technical scheme is described in detail above in association with accompanying drawing, due in the related art, not considering cell On off state, it is possible that target must be waited until as target assistant service cell, such user by choosing the cell of a closing Assistant service cell could access Target cell when opening, so that just only main serving cell provides user in a long time Communication, the peak rate of user reduce.Serving BS in the present invention passes through user report, assistant service cell base station, auxiliary Macro base station where serving cell or the on off state and switch time letter that assistant service cell is obtained by the receiver of itself Breath.Further, serving BS will be auxiliary in the on off state that user prepares when RRC is connected to Target cell based on assistant service cell Help serving cell to be divided into first and second liang of classes, and the best assistant service cell of Class A is selected according to remaining opening time length, according to Length from the following start-up time time selects the best assistant service cell of Class B, finally selects in all assistant service cells Best is used as Target cell.So that user can access target assistant service cell as soon as possible, communication is established as early as possible, so as to The time that user is in low peak speed is reduced, improves Consumer's Experience.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (13)

1. a kind of cell adds and subtracts method, it is characterised in that including：
Main serving BS obtains multiple times in the measurement report after the measurement report of plus-minus triggering of terminal transmission is received Select the switching-state information and switch time information of each candidate's assistant service cell in assistant service cell；
The main serving BS according to the switching-state information and switch time information of each candidate's assistant service cell, from The target assistant service cell that the terminal will add is selected in the multiple candidate's assistant service cell；
Wherein, the main serving BS is believed according to the switching-state information of each candidate's assistant service cell and switch time Breath, selects the target assistant service cell that the terminal will add, specifically from the multiple candidate's assistant service cell Including：
The switch shape of moment and each candidate's assistant service cell is added according to the estimated assistant service cell of the terminal State information is distinguished into first candidate's assistant service cell and second candidate's assistant service is small by the multiple candidate's assistant service is small Area, wherein, the first candidate assistant service cell is to be in opening at the estimated assistant service cell addition moment Assistant service cell, the second candidate assistant service cell is to add the moment in the estimated assistant service cell to be in and close The assistant service cell of closed state；
The switch time information of at least one candidate's assistant service cell in the first candidate assistant service cell is compared Compared with selecting from least one candidate's assistant service cell and remained since the estimated assistant service cell addition moment Most long first object assistant service cell of remaining opening time；
The switch time information of at least one candidate's assistant service cell in the second candidate assistant service cell is compared Compared with selecting following start-up time from least one candidate's assistant service cell and add with the estimated assistant service cell Add the second target assistant service cell that time at intervals is most short；
Judge whether the remaining opening time of the first object assistant service cell is more than the default opening time, in judged result During to be, the first object assistant service cell is selected otherwise, to select described second as the target assistant service cell Target assistant service cell is as the target assistant service cell.
2. cell according to claim 1 adds and subtracts method, it is characterised in that also includes：
Each candidate's assistant service is small in multiple candidate's assistant service cells in the main serving BS acquisition measurement report The signal strength information in area；
Switching-state information of the main serving BS according to each candidate's assistant service cell, the switch time information With the signal strength information, it is auxiliary that the target that the terminal will add is selected from the multiple candidate's assistant service cell Help serving cell.
3. cell according to claim 1 adds and subtracts method, it is characterised in that the main serving BS obtains the measurement report In announcement in multiple candidate's assistant service cells each candidate's assistant service cell switching-state information and switch time information, tool Body includes：
Terminal reads the switching-state information of each candidate's assistant service cell and the switch time information, and by described in Switching-state information and the switch time information are sent to the main serving BS, so that the main serving BS gets institute State switching-state information and the switch time information；Or
The main serving BS sends the addition request of assistant service cell to the base station of each candidate's assistant service cell, and Added by assistant service cell described in request answer signaling feedback the base station for receiving each candidate's assistant service cell Switching-state information and the switch time information；Or
The main serving BS sends acquisition of information to the macro base station where the base station of each candidate's assistant service cell please Ask, and receive the switching-state information for each candidate's assistant service cell that the macro base station is sent and described open Close temporal information；Or
The on off state that the main serving BS reads each candidate's assistant service cell by downlink receiver is believed Breath and the switch time information；Or
When candidate's assistant service cell belongs under the control range of the main serving BS, and candidate's assistant service When the on off state of cell and switch time are controlled as the base station where the main serving BS, directly from the main serving BS The switching-state information and the switch time information are obtained in the base station at place；Or
When candidate's assistant service cell belongs under the control range of the main serving BS, and candidate's assistant service When the on off state of cell and switch time are controlled as the base station where candidate's assistant service cell, the main serving BS Receive the switching-state information sent from base station where candidate's assistant service cell and the switch time information.
4. cell according to claim 3 adds and subtracts method, it is characterised in that the terminal is read or the main service base Stand and the switching-state information and the switch time information are read by downlink receiver, specifically include：
Detect master sync signal information, auxiliary synchronous signals information and the cell reference signals of each candidate's assistant service cell Or the cycle information of channel state information reference signals, to read the switching-state information and the switch time information；With/ Or
The radio resource control messages of macrocell where reading candidate's assistant service cell and/or candidate's assistant service cell, And/or reading media access control layer information and/or physical layer information, during reading the switching-state information and the switch Between information.
5. cell according to claim 2 adds and subtracts method, it is characterised in that described according to each candidate's assistant service The switching-state information of cell, the switch time information and the signal strength information, from the multiple candidate's assistant service The target assistant service cell that the terminal will add is selected in cell, is specifically included：
The switch shape of moment and each candidate's assistant service cell is added according to the estimated assistant service cell of the terminal State information is distinguished into first candidate's assistant service cell and second candidate's assistant service is small by the multiple candidate's assistant service is small Area, wherein, the first candidate assistant service cell is to be in opening at the estimated assistant service cell addition moment Assistant service cell, the second candidate assistant service cell is to add the moment in the estimated assistant service cell to be in and close The assistant service cell of closed state；
By the switch time information and signal of at least one candidate's assistant service cell in the first candidate assistant service cell Strength information is compared, and is selected from least one candidate's assistant service cell from the estimated assistant service cell The addition moment starts the first object assistant service cell that the remaining opening time is most long and signal intensity is most strong；
By the switch time information and signal of at least one candidate's assistant service cell in the second candidate assistant service cell Strength information is compared, and following start-up time is selected from least one candidate's assistant service cell and is expected with described Assistant service cell addition the second target assistant service cell that time at intervals is most short and signal intensity is most strong；
Judge whether the remaining opening time of the first object assistant service cell is more than the default opening time, in judged result During to be, the first object assistant service cell is selected otherwise, to select described second as the target assistant service cell Target assistant service cell is as the target assistant service cell.
A kind of 6. cell adder-subtracter, for main serving BS, it is characterised in that including：
Acquiring unit, after the measurement report of plus-minus triggering of terminal transmission is received, obtain multiple times in the measurement report Select the switching-state information and switch time information of each candidate's assistant service cell in assistant service cell；
Selecting unit, according to the switching-state information and switch time information of each candidate's assistant service cell, from described The target assistant service cell that the terminal will add is selected in multiple candidate's assistant service cells；
Division unit, moment and each candidate's assistant service cell are added according to the estimated assistant service cell of the terminal Switching-state information be distinguished into first candidate's assistant service cell and the second candidate is auxiliary by the multiple candidate's assistant service is small Serving cell is helped, wherein, the first candidate assistant service cell is to be at the estimated assistant service cell addition moment The assistant service cell of opening, the second candidate assistant service cell are in the estimated assistant service cell addition Carve the assistant service cell being closed；
First comparing unit, by the first candidate assistant service cell during the switch of at least one candidate's assistant service cell Between information be compared, select from least one candidate's assistant service cell and add from the estimated assistant service cell Added-time carves beginning remaining opening time most long first object assistant service cell；
Second comparing unit, by the second candidate assistant service cell during the switch of at least one candidate's assistant service cell Between information be compared, selected from least one candidate's assistant service cell following start-up time with it is described estimated auxiliary Help the second most short target assistant service cell of serving cell addition time at intervals；
Cell selection unit, when judging whether the remaining opening time of the first object assistant service cell is more than default open Between, it is no in judged result when being, to select the first object assistant service cell as the target assistant service cell Then, the second target assistant service cell is selected as the target assistant service cell.
7. cell adder-subtracter according to claim 6, it is characterised in that the acquiring unit is additionally operable to：
Obtain the signal intensity letter of each candidate's assistant service cell in multiple candidate's assistant service cells in the measurement report Breath；
The selecting unit is additionally operable to：
According to the switching-state information of each candidate's assistant service cell, the switch time information and the signal intensity Information, the target assistant service cell that the terminal will add is selected from the multiple candidate's assistant service cell.
8. cell adder-subtracter according to claim 6, it is characterised in that acquiring unit is specifically used for：
Receive the switching-state information and switch time letter for each candidate's assistant service cell that the terminal is read Breath；Or
The addition request of assistant service cell is sent to the base station of each candidate's assistant service cell, and receives each time Select the base station of assistant service cell by assistant service cell add request reply signaling feedback the switching-state information and The switch time information；Or
Information acquisition request is sent to the macro base station where the base station of each candidate's assistant service cell, and described in reception The switching-state information for each candidate's assistant service cell that macro base station is sent and the switch time information；Or
When reading the switching-state information of each candidate's assistant service cell and the switch by downlink receiver Between information；Or
When candidate's assistant service cell belongs under the control range of the main serving BS, and candidate's assistant service When the on off state of cell and switch time are controlled as the base station where the main serving BS, directly from the main serving BS The switching-state information and the switch time information are obtained in the base station at place；Or
When candidate's assistant service cell belongs under the control range of the main serving BS, and candidate's assistant service When the on off state of cell and switch time are controlled as the base station where candidate's assistant service cell, the main serving BS Receive the switching-state information sent from base station where candidate's assistant service cell and the switch time information.
9. cell adder-subtracter according to claim 8, it is characterised in that the acquiring unit also includes：
Detection unit, detect the master sync signal information of each candidate's assistant service cell, auxiliary synchronous signals information and small The cycle information of area's reference signal or channel state information reference signals, during reading the switching-state information and the switch Between information；And/or
Reading unit, read macrocell where candidate's assistant service cell and/or candidate's assistant service cell Radio resource control messages, and/or reading media access control layer information and/or physical layer information, to read the switch shape State information and the switch time information.
10. cell adder-subtracter according to claim 7, it is characterised in that the selecting unit also includes：
Division unit, moment and each candidate's assistant service cell are added according to the estimated assistant service cell of the terminal Switching-state information be distinguished into first candidate's assistant service cell and the second candidate is auxiliary by the multiple candidate's assistant service is small Serving cell is helped, wherein, the first candidate assistant service cell is to be at the estimated assistant service cell addition moment The assistant service cell of opening, the second candidate assistant service cell are in the estimated assistant service cell addition Carve the assistant service cell being closed；
First comparing unit, by the first candidate assistant service cell during the switch of at least one candidate's assistant service cell Between information and signal strength information be compared, selected from least one candidate's assistant service cell from described estimated The assistant service cell addition moment starts the first object assistant service cell that the remaining opening time is most long and signal intensity is most strong；
Second comparing unit, by the second candidate assistant service cell during the switch of at least one candidate's assistant service cell Between information and signal strength information be compared, when following open is selected from least one candidate's assistant service cell Carve and the estimated assistant service cell addition second target assistant service cell that time at intervals is most short and signal intensity is most strong；
Cell selection unit, when judging whether the remaining opening time of the first object assistant service cell is more than default open Between, it is no in judged result when being, to select the first object assistant service cell as the target assistant service cell Then, the second target assistant service cell is selected as the target assistant service cell.
A kind of 11. cell adder-subtracter, for terminal, it is characterised in that including：
Reading unit, read the switching-state information of each candidate's assistant service cell in multiple candidate's assistant service cells and open Close temporal information；
Transmitting element, the switching-state information and the switch time information are sent to main serving BS；
Wherein, the main serving BS includes the cell adder-subtracter as any one of claim 6 to 10.
12. cell adder-subtracter according to claim 11, it is characterised in that the reading unit is specifically used for：
Detect master sync signal information, auxiliary synchronous signals information and the cell reference signals of each candidate's assistant service cell Or the cycle information of channel state information reference signals, to read the switching-state information and the switch time information；With/ Or
Read the nothing of the macrocell where each candidate's assistant service cell and/or each candidate's assistant service cell Line resource control information, and/or reading media access control layer information and/or physical layer information, to read the switch shape State information and the switch time information.
A kind of 13. terminal, it is characterised in that including：Cell adder-subtracter as described in claim 11 or 12.
CN201410467767.5A 2014-09-15 2014-09-15 Cell plus-minus method, cell adder-subtracter and terminal Active CN104202780B (en)

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