CN104202780A

CN104202780A - Cell addition and reduction method, cell addition and reduction device, serving base station and terminal

Info

Publication number: CN104202780A
Application number: CN201410467767.5A
Authority: CN
Inventors: 李明菊; 朱亚军; 张云飞
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2014-09-15
Filing date: 2014-09-15
Publication date: 2014-12-10
Anticipated expiration: 2034-09-15
Also published as: CN104202780B

Abstract

The invention provides a cell addition and reduction method, a cell addition and reduction device, a serving base station and a terminal. The cell addition and reduction method includes: after receiving an addition and reduction triggered measurement report sent by the terminal, a main serving base station acquires open-close state information and open-close time information of each of a plurality of candidate auxiliary serving cells in the measurement report; the main serving base station selects out a target auxiliary serving cell to be added for the terminal from the plurality of candidate auxiliary serving cells according to the open-close state information and the open-close time information of each candidate auxiliary serving cell. According to the technical scheme, the auxiliary serving cells can be accessed and used by the terminal as soon as possible, and accordingly peak rate decreasing time of the terminal can be shortened, and peak rate of the terminal can be recovered as quickly as possible.

Description

Community plus-minus method, community adder-subtracter, serving BS and terminal

Technical field

The present invention relates to community and select technical field, in particular to a kind of community plus-minus method, a kind of community adder-subtracter, a kind of serving BS and a kind of terminal.

Background technology

In LTE-A (Long Term Evolution-Advanced) network, in order further to improve peak rate, introduced carrier aggregation technology.In carrier aggregation technology (as shown in Figure 1), user can first connect a macrocell guarantee to connect continuity, this macrocell on carrier frequency F1, the Pcell that this macrocell is user so (Primary Cell, main Serving cell).And simultaneously user is also under the cell coverage area of carrier frequency F2, in order to improve user's peak rate, base station selects cell that the upper signal of F2 is stronger as Scell (Secondary Cell, assistant service community) according to user's measurement report for user.Like this, a plurality of Serving cells can be combined for user provides uplink and downlink communication, make user's available bandwidth become large, thereby improve peak rate.In conventional method, is all opening carrier frequency Shang community, place, assistant service community, the community of not closing.So user is in moving process, the signal strength signal intensity when assistant service community reduces, and when the signal strength signal intensity of the upper adjacent cell of place, assistant service community carrier frequency F2 uprises, user understands strength of transmitted signals measurement report.And the signal strength measurement report that the serving BS at Pcell place can send according to user is selected the upper most suitable assistant service of carrier frequency F2 community, namely signal strength signal intensity Gao community.If find that the upper adjacent cell of carrier frequency F2 is stronger than existing assistant service cell signal strength, Pcell place serving BS will be removed existing assistant service community, and then add that adjacent cell that signal is stronger is as new assistant service community, the plus-minus process of Here it is Scell.The plus-minus is here exactly first to remove old assistant service community, then adds new assistant service community.That is to say, the decision of Scell plus-minus in existing network and the selection criterion of best Scell are mainly based on signal strength measurement.

In present assistant service subzone network, semi-static or dynamic switch can be carried out according to situations such as interference or cell loads in assistant service community.That is to say that certain assistant service community opening at the moment, but may just close soon.Otherwise also is likely closing at the moment certain assistant service community, and opened soon.Existing Scell plus-minus scheme is not considered the state of assistant service community switch, and is mainly to decide best Scell according to signal strength signal intensity, may cause like this user's peak rate to decline suddenly.Such as, serving BS has been selected better Scell according to signal strength signal intensity, in RRC when access, is prepared in closed condition user in Dan Gai community, this user can not access this Scell at once so, can not set up as soon as possible communication, can only wait until when this Scell becomes opening from closed condition and could be connected and set up communication with this Scell.Like this, user just only has Pcell that communication is provided in long-time, and long-time interior user's peak rate is reduced, and user experiences variation.

Therefore, need a kind of new technical scheme, make terminal can access as soon as possible and use assistant service community, thereby reduce the time that terminal peak rate declines, terminal peak value speed can be recovered as early as possible.

Summary of the invention

The present invention, just based on the problems referred to above, has proposed a kind of new technical scheme, makes terminal can access as soon as possible and use assistant service community, thereby reduces the time that terminal peak rate declines, and terminal peak value speed can be recovered as early as possible.

In view of this, the present invention proposes a kind of community plus-minus method, comprise: main serving BS, after receiving the measurement report that plus-minus that terminal sends triggers, obtains in described measurement report the on off state information of each candidate's assistant service community and switching time information in a plurality of candidate's assistant services community; Described main serving BS according to the on off state information of described each candidate's assistant service community and switching time information, from described a plurality of candidate's assistant services community, select the auxiliary Serving cell of target that described terminal be about to be added.

Tradition assistant service community plus-minus method is not because consider the on off state of community, so may choose a community of closing as the auxiliary Serving cell of target, user must wait until when open the auxiliary Serving cell of target and could access Target cell like this, thereby make user just only have main Serving cell that communication is provided in long-time, user's peak rate reduces.And in technical scheme of the present invention, when main serving BS is selected assistant service community, consider on off state and the switching time of assistant service community, terminal can access and use assistant service community as soon as possible, thereby reduce the time that terminal peak rate declines, terminal peak value speed can be recovered as early as possible.

In technique scheme, preferably, also comprise: described main serving BS obtains in described measurement report the signal strength information of each candidate's assistant service community in a plurality of candidate's assistant services community; Described main serving BS, according to the on off state information of described each candidate's assistant service community, described switching time information and described signal strength information, is selected described terminal and is about to the auxiliary Serving cell of target of adding from described a plurality of candidate's assistant services community.

In this technical scheme, can also consider on off state information, switching time information and signal strength information, according to the on off state of candidate's assistant service community, switching time and signal strength signal intensity, select the auxiliary Serving cell of most suitable target.Such as, a plurality of assistant services community is approximate aspect on off state and switching time, and if two assistant service communities are all in opening, and residue opening time difference is little, now, can select the assistant service community that signal strength signal intensity is stronger to assist Serving cell as target.

In technique scheme, preferably, described main serving BS obtains in described measurement report the on off state information of each candidate's assistant service community and switching time information in a plurality of candidate's assistant services community, specifically comprise: terminal read each candidate's assistant service community described on off state information and described switching time information, and by described on off state information and described switching time information be sent to described main serving BS so that described main serving BS get described on off state information and described switching time information; Or described main serving BS sends assistant service community and adds request to the base station of described each candidate's assistant service community, and the base station that receives described each candidate's assistant service community by assistant service community add request answer described on off state information that signaling feeds back and described switching time information; Or described main serving BS sends information acquisition request to the macro base station at the place, base station of described each candidate's assistant service community, and receive described each candidate's assistant service community that described macro base station sends described on off state information and described switching time information; Or described main serving BS by downlink receiver read described each candidate's assistant service community described on off state information and described switching time information; Or when described candidate's assistant service community belongs to lower time of control range of described main serving BS, and the on off state of described candidate's assistant service community and switching time be when controlled by the base station at described main serving BS place, directly from the base station at described main serving BS place, obtain described on off state information and described switching time information; Or when described candidate's assistant service community belongs to lower time of control range of described main serving BS, and the on off state of described candidate's assistant service community and switching time be when controlled by the base station at place, described candidate's assistant service community, described main serving BS receive the described on off state information that sends from base station, place, described candidate's assistant service community and described switching time information.

In technique scheme, preferably, described terminal read or described main serving BS by downlink receiver read described on off state information and described switching time information, specifically comprise: detect the cycle information of master sync signal information, auxiliary synchronous signals information and cell reference signals or the channel state information reference signals of described each candidate's assistant service community, with read described on off state information and described switching time information; And/or the Radio Resource control information of reading the macrocell at candidate's assistant service community and/or place, candidate's assistant service community, and/or reading media access control layer information and/or physical layer information, with read described on off state information and described switching time information.

In this technical scheme, main serving BS obtain assistant service community on off state and switching time information method include, but are not limited to following mode: 1) terminal family read assistant service community on off state and switching time information, and report to main serving BS.2) main serving BS is received after measurement report, by the interface of main serving BS and assistant service community, with assistant service community add request command obtain assistant service community on off state and switching time information.3) main serving BS is received after measurement report, the macro base station by place, assistant service community obtain assistant service community on off state and switching time information.4) main serving BS oneself read assistant service community on off state and switching time information.5) this candidate's assistant service community belongs under serving BS controls, on off state and the switching time of this assistant service community of serving BS oneself decision, so the storage switch state of main serving BS own and switching time information.6) this candidate's assistant service community belongs under serving BS control, the own control switch state in this assistant service community and switching time, but what assistant service community can be semi-static informs main serving BS by off state and switching time by inter-base station interface, so main serving BS also stored on off state and switching time information.

In technique scheme, preferably, described main serving BS according to the on off state information of described each candidate's assistant service community and switching time information, from described a plurality of candidate's assistant services community, select described terminal and be about to the auxiliary Serving cell of target of adding, specifically comprise: the on off state information of adding the moment and described each candidate's assistant service community according to the expectation assistant service community of described terminal is by little first candidate's assistant service community and the second candidate's assistant service community of being distinguished into of described a plurality of candidate's assistant services, wherein, described first candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in opening constantly, described second candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in closed condition constantly, information switching time of at least one candidate's assistant service community in described first candidate's assistant service community is compared, from described at least one candidate's assistant service community, select from described expectation assistant service community and add and constantly start to remain the longest first object assistant service community of opening time, information switching time of at least one candidate's assistant service community in described second candidate's assistant service community is compared, from described at least one candidate's assistant service community, select following start-up time and described expectation assistant service community and add the auxiliary Serving cell of the second the shortest target of time at intervals, whether the residue opening time that judges described first object assistant service community is greater than the default opening time, judgment result is that while being, select described first object assistant service community as the auxiliary Serving cell of described target, otherwise, select the auxiliary Serving cell of described the second target as the auxiliary Serving cell of described target.

In this technical scheme, assistant service community is divided into two classes according to the on off state of a certain particular moment, this particular moment refers in terminal and receives after the assistant service community interpolation instruction of main serving BS, prepare to carry out random access or RRC (the Radio Resource Control of new assistant service community, Radio Resource control) in the moment connecting, estimate the interpolation of assistant service community constantly.Two class assistant service communities mainly refer to: in this expectation assistant service community, add constantly the first kind assistant service community in opening; At this, estimate the interpolation of assistant service community constantly, the Equations of The Second Kind assistant service community in closed condition.Then from selecting first kind assistant service community from estimating the interpolation constantly of assistant service community, residue the longest first object assistant service community of opening time, and from Equations of The Second Kind assistant service community, select its following start-up time and add the auxiliary Serving cell of the second the shortest target of time at intervals with estimating assistant service community, thereby assurance terminal can be added the auxiliary Serving cell of target fast, again the auxiliary Serving cell of two targets selecting is compared, if the residue opening time of first object assistant service community is shorter, just select the auxiliary Serving cell of the second target to add, if the residue opening time long enough of first object assistant service community, can select this first object assistant service community, thereby terminal can access and use assistant service community as soon as possible, thereby reduce the time that terminal peak rate declines, terminal peak value speed can be recovered as early as possible.

In technique scheme, preferably, the on off state information of each candidate's assistant service community described in described basis, described switching time information and described signal strength information, from described a plurality of candidate's assistant services community, select described terminal and be about to the auxiliary Serving cell of target of adding, specifically comprise: the on off state information of adding the moment and described each candidate's assistant service community according to the expectation assistant service community of described terminal is by little first candidate's assistant service community and the second candidate's assistant service community of being distinguished into of described a plurality of candidate's assistant services, wherein, described first candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in opening constantly, described second candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in closed condition constantly, by at least one candidate's assistant service community in described first candidate's assistant service community switching time information and signal strength information compare, from described at least one candidate's assistant service community, select from described expectation assistant service community and add and constantly to start to remain the first object assistant service community that the opening time is the longest and signal strength signal intensity is the strongest, by at least one candidate's assistant service community in described second candidate's assistant service community switching time information and signal strength information compare, from described at least one candidate's assistant service community, select following start-up time and described expectation assistant service community and add the auxiliary Serving cell of the second target that time at intervals is the shortest and signal strength signal intensity is the strongest, whether the residue opening time that judges described first object assistant service community is greater than the default opening time, judgment result is that while being, select described first object assistant service community as the auxiliary Serving cell of described target, otherwise, select the auxiliary Serving cell of described the second target as the auxiliary Serving cell of described target.

In this technical scheme, carrying out can also considering when the auxiliary Serving cell of target is selected on off state information, switching time information and signal strength information, according to the on off state of assistant service community, switching time and signal strength signal intensity, select the auxiliary Serving cell of most suitable target.Such as, a plurality of assistant services community is approximate aspect on off state and switching time, and if two assistant service communities are all in opening, and residue opening time difference is little, now, can select the assistant service community that signal strength signal intensity is stronger to assist Serving cell as target.Thereby make the auxiliary Serving cell of target of selecting both have stronger signal strength signal intensity, quick-recovery communication soon again, lifting user's experience.

According to a further aspect in the invention, a kind of community adder-subtracter is also provided, for main serving BS, comprise: acquiring unit, after receiving the measurement report that plus-minus that terminal sends triggers, obtain in described measurement report the on off state information of each candidate's assistant service community and switching time information in a plurality of candidate's assistant services community; Selected cell, according to the on off state information of described each candidate's assistant service community and switching time information, from described a plurality of candidate's assistant services community, select the auxiliary Serving cell of target that described terminal be about to be added.

In technique scheme, preferably, described acquiring unit is also for the signal strength information that obtains each candidate's assistant service community in a plurality of candidate's assistant service of described measurement report community; Described selected cell also for: according to the on off state information of described each candidate's assistant service community, described switching time information and described signal strength information, from described a plurality of candidate's assistant services community, select described terminal and be about to the auxiliary Serving cell of target of adding.

In technique scheme, preferably, acquiring unit specifically for: receive each candidate's assistant service community that described terminal reads described on off state information and described switching time information; Or to the base station of described each candidate's assistant service community, send assistant service community and add request, and the base station that receives described each candidate's assistant service community by assistant service community add request answer described on off state information that signaling feeds back and described switching time information; Or the macro base station to the place, base station of described each candidate's assistant service community sends information acquisition request, and receive described each candidate's assistant service community that described macro base station sends described on off state information and described switching time information; Or by downlink receiver read described each candidate's assistant service community described on off state information and described switching time information; Or when described candidate's assistant service community belongs to lower time of control range of described main serving BS, and the on off state of described candidate's assistant service community and switching time be when controlled by the base station at described main serving BS place, directly from the base station at described main serving BS place, obtain described on off state information and described switching time information; When described candidate's assistant service community belongs to lower time of control range of described main serving BS, and the on off state of described candidate's assistant service community and switching time be when controlled by the base station at place, described candidate's assistant service community, described main serving BS receive the described on off state information that sends from base station, place, described candidate's assistant service community and described switching time information.

In this technical scheme, main serving BS obtain assistant service community on off state and switching time information method include, but are not limited to following mode: 1) terminal read assistant service community on off state and switching time information, and report to main serving BS.2) main serving BS is received after measurement report, by the interface of main serving BS and assistant service community, with assistant service community add request command obtain assistant service community on off state and switching time information.3) main serving BS is received after measurement report, the macro base station by place, assistant service community obtain assistant service community on off state and switching time information.4) main serving BS oneself read assistant service community on off state and switching time information.5) this candidate's assistant service community belongs under serving BS controls, on off state and the switching time of this assistant service community of serving BS oneself decision, so the storage switch state of main serving BS own and switching time information.6) this candidate's assistant service community belongs under serving BS control, the own control switch state in this assistant service community and switching time, but what assistant service community can be semi-static informs main serving BS by off state and switching time by inter-base station interface, so main serving BS also stored on off state and switching time information.

In technique scheme, preferably, described acquiring unit also comprises: detecting unit, detect the cycle information of master sync signal information, auxiliary synchronous signals information and cell reference signals or the channel state information reference signals of described each candidate's assistant service community, with read described on off state information and described switching time information; And/or reading unit, read the Radio Resource control information of the macrocell at described candidate's assistant service community and/or place, described candidate's assistant service community, and/or reading media access control layer information and/or physical layer information, with read described on off state information and described switching time information.

In this technical scheme, main serving BS reading information comprises: PSS (the Primary Synchronization Signal that detects assistant service community, master sync signal)/SSS (Secondary Synchronization Signal, auxiliary synchronous signals) and CRS (Cell-specific Reference Signal, cell reference signals) cycle of/CSI-RS (Channel State Information Reference Signal, channel state information reference signals); Detect rrc message (comprising system information), MAC (Medium Access Control, media access control) layer information and/or the physical layer information of assistant service community or place, assistant service community macrocell.When the system information that detects assistant service community or its place macrocell when main serving BS obtains on off state and switching time, need assistant service community or its place macrocell with system information send its on off state and switching time information.

In technique scheme, preferably, described selected cell specifically comprises: division unit, the on off state information of adding the moment and described each candidate's assistant service community according to the expectation assistant service community of described terminal is by little first candidate's assistant service community and the second candidate's assistant service community of being distinguished into of described a plurality of candidate's assistant services, wherein, described first candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in opening constantly, described second candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in closed condition constantly, the first comparing unit, information switching time of at least one candidate's assistant service community in described first candidate's assistant service community is compared, from described at least one candidate's assistant service community, select from described expectation assistant service community and add and constantly start to remain the longest first object assistant service community of opening time, the second comparing unit, information switching time of at least one candidate's assistant service community in described second candidate's assistant service community is compared, from described at least one candidate's assistant service community, select following start-up time and described expectation assistant service community and add the auxiliary Serving cell of the second the shortest target of time at intervals, community selected cell, whether the residue opening time that judges described first object assistant service community is greater than the default opening time, judgment result is that while being, select described first object assistant service community as the auxiliary Serving cell of described target, otherwise, select the auxiliary Serving cell of described the second target as the auxiliary Serving cell of described target.

In this technical scheme, assistant service community is divided into two classes according to the on off state of a certain particular moment, this particular moment refers in terminal and receives after the assistant service community interpolation instruction of main serving BS, prepare to carry out the random access of new assistant service community or the moment that RRC connects, estimate the interpolation of assistant service community constantly.Two class assistant service communities mainly refer to: in this expectation assistant service community, add constantly the first kind assistant service community in opening; At this, estimate the interpolation of assistant service community constantly, the Equations of The Second Kind assistant service community in closed condition.Then from selecting first kind assistant service community from estimating the interpolation constantly of assistant service community, residue the longest first object assistant service community of opening time, and from Equations of The Second Kind assistant service community, select its following start-up time and add the auxiliary Serving cell of the second the shortest target of time at intervals with estimating assistant service community, thereby assurance terminal can be added the auxiliary Serving cell of target fast, again the auxiliary Serving cell of two targets selecting is compared, if the residue opening time of first object assistant service community is shorter, just select the auxiliary Serving cell of the second target to add, if the residue opening time long enough of first object assistant service community, can select this first object assistant service community, thereby terminal can access and use assistant service community as soon as possible, thereby reduce the time that terminal peak rate declines, terminal peak value speed can be recovered as early as possible.

In technique scheme, preferably, described selected cell also comprises: division unit, the on off state information of adding the moment and described each candidate's assistant service community according to the expectation assistant service community of described terminal is by little first candidate's assistant service community and the second candidate's assistant service community of being distinguished into of described a plurality of candidate's assistant services, wherein, described first candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in opening constantly, described second candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in closed condition constantly, the first comparing unit, by at least one candidate's assistant service community in described first candidate's assistant service community switching time information and signal strength information compare, from described at least one candidate's assistant service community, select from described expectation assistant service community and add and constantly to start to remain the first object assistant service community that the opening time is the longest and signal strength signal intensity is the strongest, the second comparing unit, by at least one candidate's assistant service community in described second candidate's assistant service community switching time information and signal strength information compare, from described at least one candidate's assistant service community, select following start-up time and described expectation assistant service community and add the auxiliary Serving cell of the second target that time at intervals is the shortest and signal strength signal intensity is the strongest, community selected cell, whether the residue opening time that judges described first object assistant service community is greater than the default opening time, judgment result is that while being, select described first object assistant service community as the auxiliary Serving cell of described target, otherwise, select the auxiliary Serving cell of described the second target as the auxiliary Serving cell of described target.

According to a further aspect in the invention, also provide a kind of community adder-subtracter, for terminal, having comprised: reading unit, read each candidate's assistant service community in a plurality of candidate's assistant services community on off state information and switching time information; Transmitting element, by described on off state information and described switching time information be sent to main serving BS.

In this technical scheme, at main serving BS, need to obtain the switching time of information and during on off state information, terminal can read the on off state of candidate's assistant service community and the information of switching time, reports to main serving BS.This report can send together with signal strength measurement report.

In technique scheme, preferably, described reading unit specifically for: detect the cycle information of master sync signal information, auxiliary synchronous signals information and cell reference signals or the channel state information reference signals of described each candidate's assistant service community, with read described on off state information and described switching time information; And/or the Radio Resource control information of reading the macrocell at described each candidate's assistant service community and/or described each place, candidate's assistant service community, and/or reading media access control layer information and/or physical layer information, with read described on off state information and described switching time information.

In this technical scheme, terminal reading information comprises: detect the PSS/SSS of assistant service community and the cycle of CRS/CSI-RS; Detect rrc message (comprising system information), MAC layer information and/or the physical layer information of assistant service community or place, assistant service community macrocell.When the system information that detects the macrocell at assistant service community or its place when terminal obtains on off state and switching time, the macrocell that needs assistant service community or its place with system information send its on off state and switching time information.

In accordance with a further aspect of the present invention, also provide a kind of base station, having comprised: the community adder-subtracter for base station in technique scheme described in any one.This base station has identical technique effect with the above-mentioned community adder-subtracter for main serving BS, does not repeat them here.

In accordance with a further aspect of the present invention, also provide a kind of terminal, having comprised: the community adder-subtracter for terminal in technique scheme described in any one.This terminal has identical technique effect with the above-mentioned community adder-subtracter for terminal, does not repeat them here.

By above technical scheme, make terminal can access as soon as possible and use assistant service community, thereby reduce the time that terminal peak rate declines, terminal peak value speed can be recovered as early as possible.

Accompanying drawing explanation

Fig. 1 shows the flow chart of community plus-minus method according to an embodiment of the invention;

Fig. 2 shows the block diagram of community according to an embodiment of the invention adder-subtracter;

Fig. 3 shows the block diagram of community 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 community plus-minus method according to an embodiment of the invention;

Fig. 7 show assistant service community according to an embodiment of the invention on off state and switching time schematic diagram;

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 show on off state information according to an embodiment of the invention and switching time information acquisition process schematic diagram.

Embodiment

In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.

A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.

Fig. 1 shows the flow chart of community plus-minus method according to an embodiment of the invention.

As shown in Figure 1, community plus-minus method according to an embodiment of the invention, comprise: step 102, main serving BS, after receiving the measurement report that plus-minus that terminal sends triggers, obtains in described measurement report the on off state information of each candidate's assistant service community and switching time information in a plurality of candidate's assistant services community; Step 104, described main serving BS according to the on off state information of described each candidate's assistant service community and switching time information, from described a plurality of candidate's assistant services community, select the auxiliary Serving cell of target that described terminal be about to be added.

Fig. 2 shows the block diagram of community according to an embodiment of the invention adder-subtracter.

As shown in Figure 2, community according to an embodiment of the invention adder-subtracter 200, for main serving BS, comprise: acquiring unit 202, after receiving the measurement report that plus-minus that terminal sends triggers, obtain in described measurement report the on off state information of each candidate's assistant service community and switching time information in a plurality of candidate's assistant services community; Selected cell 204, according to the on off state information of described each candidate's assistant service community and switching time information, from described a plurality of candidate's assistant services community, select the auxiliary Serving cell of target that described terminal be about to be added.

In technique scheme, preferably, described acquiring unit 202 is also for the signal strength information that obtains each candidate's assistant service community in a plurality of candidate's assistant service of described measurement report community; Described selected cell 204 also for: according to the on off state information of described each candidate's assistant service community, described switching time information and described signal strength information, from described a plurality of candidate's assistant services community, select described terminal and be about to the auxiliary Serving cell of target of adding.

In technique scheme, preferably, acquiring unit 202 specifically for: receive each candidate's assistant service community that described terminal reads described on off state information and described switching time information; Or to the base station of described each candidate's assistant service community, send assistant service community and add request, and the base station that receives described each candidate's assistant service community by assistant service community add request answer described on off state information that signaling feeds back and described switching time information; Or the macro base station to the place, base station of described each candidate's assistant service community sends information acquisition request, and receive described each candidate's assistant service community that described macro base station sends described on off state information and described switching time information; Or by downlink receiver read described each candidate's assistant service community described on off state information and described switching time information; Or when described candidate's assistant service community belongs to lower time of control range of described main serving BS, and the on off state of described candidate's assistant service community and switching time be when controlled by the base station at described main serving BS place, directly from the base station at described main serving BS place, obtain described on off state information and described switching time information; When described candidate's assistant service community belongs to lower time of control range of described main serving BS, and the on off state of described candidate's assistant service community and switching time be when controlled by the base station at place, described candidate's assistant service community, described main serving BS receive the described on off state information that sends from base station, place, described candidate's assistant service community and described switching time information.

In technique scheme, preferably, described acquiring unit 202 also comprises: detecting unit 2022, detect the cycle information of master sync signal information, auxiliary synchronous signals information and cell reference signals or the channel state information reference signals of described each candidate's assistant service community, with read described on off state information and described switching time information; And/or reading unit 2024, read the Radio Resource control information of the macrocell at described candidate's assistant service community and/or place, described candidate's assistant service community, and/or reading media access control layer information and/or physical layer information, with read described on off state information and described switching time information.

In this technical scheme, main serving BS reading information comprises: detect the PSS/SSS of assistant service community and the cycle of CRS/CSI-RS; Detect rrc message (comprising system information), MAC layer information and/or the physical layer information of assistant service community or place, assistant service community macrocell.When the system information that detects assistant service community or its place macrocell when main serving BS obtains on off state and switching time, need assistant service community or its place macrocell with system information send its on off state and switching time information.

In technique scheme, preferably, described selected cell 204 specifically comprises: division unit 2042, the on off state information of adding the moment and described each candidate's assistant service community according to the expectation assistant service community of described terminal is by little first candidate's assistant service community and the second candidate's assistant service community of being distinguished into of described a plurality of candidate's assistant services, wherein, described first candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in opening constantly, described second candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in closed condition constantly, the first comparing unit 2044, information switching time of at least one candidate's assistant service community in described first candidate's assistant service community is compared, from described at least one candidate's assistant service community, select from described expectation assistant service community and add and constantly start to remain the longest first object assistant service community of opening time, the second comparing unit 2046, information switching time of at least one candidate's assistant service community in described second candidate's assistant service community is compared, from described at least one candidate's assistant service community, select following start-up time and described expectation assistant service community and add the auxiliary Serving cell of the second the shortest target of time at intervals, community selected cell 2048, whether the residue opening time that judges described first object assistant service community is greater than the default opening time, judgment result is that while being, select described first object assistant service community as the auxiliary Serving cell of described target, otherwise, select the auxiliary Serving cell of described the second target as the auxiliary Serving cell of described target.

In technique scheme, preferably, described selected cell 204 also comprises: division unit 2042, the on off state information of adding the moment and described each candidate's assistant service community according to the expectation assistant service community of described terminal is by little first candidate's assistant service community and the second candidate's assistant service community of being distinguished into of described a plurality of candidate's assistant services, wherein, described first candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in opening constantly, described second candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in closed condition constantly, the first comparing unit 2044, by at least one candidate's assistant service community in described first candidate's assistant service community switching time information and signal strength information compare, from described at least one candidate's assistant service community, select from described expectation assistant service community and add and constantly to start to remain the first object assistant service community that the opening time is the longest and signal strength signal intensity is the strongest, the second comparing unit 2046, by at least one candidate's assistant service community in described second candidate's assistant service community switching time information and signal strength information compare, from described at least one candidate's assistant service community, select following start-up time and described expectation assistant service community and add the auxiliary Serving cell of the second target that time at intervals is the shortest and signal strength signal intensity is the strongest, community selected cell 2048, whether the residue opening time that judges described first object assistant service community is greater than the default opening time, judgment result is that while being, select described first object assistant service community as the auxiliary Serving cell of described target, otherwise, select the auxiliary Serving cell of described the second target as the auxiliary Serving cell of described target.

Fig. 3 shows the block diagram of community adder-subtracter according to another embodiment of the invention.

As shown in Figure 3, community adder-subtracter 300 according to another embodiment of the invention, for terminal, comprising: reading unit 302, read each candidate's assistant service community in a plurality of candidate's assistant services community on off state information and switching time information; Transmitting element 304, by described on off state information and described switching time information be sent to main serving BS.

In technique scheme, preferably, described reading unit 302 specifically for: detect the cycle information of master sync signal information, auxiliary synchronous signals information and cell reference signals or the channel state information reference signals of described each candidate's assistant service community, with read described on off state information and described switching time information; And/or the Radio Resource control information of reading the macrocell at described each candidate's assistant service community and/or described each place, candidate's assistant service community, and/or reading media access control layer information and/or physical layer information, with read described on off state information and described switching 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, comprising: in technique scheme described in any one for the community adder-subtracter 200 of main serving BS.This base station has identical technique effect with the above-mentioned community adder-subtracter 200 for serving BS, does not repeat them 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, comprising: described in technique scheme for the community adder-subtracter 300 of terminal.This terminal has identical technique effect with the above-mentioned community adder-subtracter 300 for terminal, does not repeat them here.

Below in conjunction with Fig. 6 to Figure 10, describe technical scheme of the present invention in detail.

As shown in Figure 6, the idiographic flow of community plus-minus method comprises according to an embodiment of the invention:

Step 602, main serving BS receives the signal strength measurement report that terminal sends.

Step 604, main serving BS triggers after measurement report at the plus-minus of receiving terminal, obtain the assistant service community in measurement report on off state and switching time information.Serving BS is considered on off state and the switching time of assistant service community, and/or the signal strength signal intensity of each assistant service community in measurement report, for this terminal is selected the auxiliary Serving cell of best target.

Main serving BS is considered the on off state of assistant service community and switching time and the step of select target community comprises:

Step 606, assistant service community is divided into first and second liang of classes according to the on off state of a certain particular moment, this particular moment refers in terminal and receives after the assistant service community interpolation instruction of main serving BS, prepare to carry out the random access of new assistant service community or the moment that RRC connects, estimate the interpolation of assistant service community constantly.Two class assistant service communities mainly refer to: Class A (being the first kind) referred in this moment, the assistant service community in opening; Class B (being Equations of The Second Kind) referred in this moment, the assistant service community in closed condition.Wherein, as shown in Figure 7, when user's (being terminal) #1 is when t2 is ready at all times to carry out random access or RRC connection, assistant service community #1 is in opening on off state example, for user #1, assistant service community #1 should be divided into Class A so.When user #2 is when t4 is ready at all times to carry out random access or RRC connection, assistant service community #1 is in closed condition, and so for user #2, assistant service community #1 should be divided into Class B.

Step 608, main serving BS is selected best assistant service community, Class A according to residue opening time length.Class A selection criterion: the assistant service community of selecting enough this users of residue opening time to complete RRC connection procedure.In these communities, further, select residue the longest assistant service community of opening time.

Wherein, as shown in Figure 7, when user #1 is when t2 is ready at all times to carry out random access or RRC connection, assistant service community #1 is in opening for residue opening time example, its residue opening time refers to this period of time of t3-t2, i.e. the following also time in continuous opening.Here suppose that each opening time continues 100ms, i.e. this period of time of t3-t1.

Step 610, main serving BS is selected the best assistant service of Class B community according to the length of distance following start-up time time.Class B selection criterion: the assistant service community of the following start-up time shortest time of chosen distance.

Wherein, the following start-up time time example of distance as shown in Figure 7, when user #2 is when t4 is ready at all times to carry out random access or RRC connection, assistant service community #1 is in closed condition, it refers to this period of time of t5-t4 apart from the following start-up time time, be future how long after, this community will enter opening.Here suppose that each shut-in time continues 100ms, i.e. this period of time of t5-t3.(wherein, refer to residue opening time and/or following start-up time time of distance the switching time of indication of the present invention.) the further best assistant service community of best assistant service community, Class A and Class B relatively.

Step 612, main serving BS is selected best assistant service community as the auxiliary Serving cell of target, after main serving BS chooses the auxiliary Serving cell of target, to this user terminal, send assistant service community and add instruction, terminal is received the interpolation instruction of assistant service community, start assistant service community adding procedure, and complete assistant service community adding procedure, set up communication.Particularly, if best assistant service community, Class A completes after the adding procedure of assistant service community user, also have long time in opening, be convenient to the fast quick-recovery communication of user, select so best assistant service community, Class A as the auxiliary Serving cell of target; If the assistant service community adding procedure of the inadequate completing user of residue opening time of the assistant service community that Class A is best, or can enter closed condition after having completed user's assistant service community adding procedure at once; And the best assistant service community of Class B can enter long opening at short notice, select so the best assistant service community of Class B as the auxiliary Serving cell of target.

Below in conjunction with two specific embodiments, describe the system of selection of the auxiliary Serving cell of target of the present invention in detail.

Embodiment 1: provide below an example 1 based on off state and select target switching time community:

When user is when the time is prepared random access or RRC connection as shown in Figure 8, assistant service community #1 and #2 are in opening, and assistant service community #3 and #4 are in closed condition.

Class AB assistant service cell classification situation is as follows so: Class A is #1 and #2, and Class B is #3 and #4.

Select best assistant service community, Class A according to the residue opening time: the residue opening time of assistant service community #2 is longer, so that assistant service community #2 is chosen as Class A is best.

According to the distance best assistant service community of following start-up time selection of time Class B: assistant service community #3 is apart from following start-up time shortest time, so that assistant service community #3 is chosen as Class B is best.

Comparison Class A is best and Class B is best, and the residue opening time of the assistant service community #2 that Class A is best is enough long, so assistant service community #2 is chosen as Target cell.

Embodiment 2: provide below an example 2 based on off state and select target assistant service switching time community.

When user is when the time is prepared random access or RRC connection as shown in Figure 9, assistant service community #1 and #2 are in opening, and assistant service community #3 and #4 are in closed condition.

Comparison Class A is best and Class B is best, and the residue opening time of the assistant service community #2 that Class A is best is too short, and the best assistant service of Class B community #3 just can enter the opening time of long period at once, so assistant service community #3 is chosen as Target cell.

Carrying out Target cell while selecting, except above-mentioned according on off state information and switching time information select, main serving BS can also be combined and considered the signal strength signal intensity of on off state and switching time and assistant service community and select target community.Particularly, main serving BS is combined and is considered the signal strength signal intensity of on off state and switching time and assistant service community and the criterion of select target assistant service community is as follows: if a plurality of assistant services community is approximate aspect on off state and switching time, such as two assistant service communities are all in opening, and residue opening time difference is little, select so the assistant service community that signal strength signal intensity is strong to assist Serving cell as target.

Wherein, in above-mentioned steps 604, main serving BS obtain assistant service community on off state and switching time information method comprise:

1, terminal reads the on off state of assistant service community and the information of switching time, reports to main serving BS.This report can send together with signal strength measurement report.

Terminal reading information comprises: detect the PSS/SSS of assistant service community or the cycle of CRS/CSI-RS acquisition on off state; The rrc message (comprising system information), MAC layer information and/or the physical layer information that detect assistant service community or place, assistant service community macrocell obtain switching time.Comprise various implicit expression and explicit indication information.Wherein, when the system information that detects assistant service community or its place macrocell as user obtains on off state and switching time, need assistant service community or its place macrocell with system information send its on off state and switching time information.

2, main serving BS obtains (as shown in figure 10) by inter-base station interface (X2), as main serving BS sends assistant service community, add request to assistant service cell base station, assistant service cell base station by assistant service community add request answer signaling feed back its on off state and switching time information.

3, main serving BS obtains by the macro base station at place, assistant service community.If the switch of assistant service community is all to be controlled by macro base station, so macro base station be have each assistant service community on off state and switching time information, so macro base station can provide these information to main serving BS.If the switch of assistant service community also can oneself be controlled, need so assistant service community by the on off state of oneself and switching time information all inform macro base station, macro base station also can provide these information to main serving BS like this.

4, main serving BS utilizes the downlink receiver of oneself, as terminal, go to read assistant service community on off state and switching time information.

Main serving BS reading information comprises: detect the PSS/SSS of assistant service community or the cycle of CRS/CSI-RS acquisition on off state; The rrc message (comprising system information), MAC layer information and/or the physical layer information that detect assistant service community or place, assistant service community macrocell obtain switching time.Comprise various implicit expression and explicit indication information.Wherein, when the system information that detects assistant service community or its place macrocell when main serving BS obtains on off state and switching time, need assistant service community or its place macrocell with system information send its on off state and switching time information.

5, when candidate's assistant service community belongs under the control range of main serving BS, and the on off state of assistant service community and switching time are by place, main Serving cell serving BS, when main serving BS is controlled, main serving BS itself just store assistant service community on off state and switching time information, do not need additionally to obtain.

6, when candidate's assistant service community belongs under the control range of main serving BS, and the on off state of assistant service community and while being controlled by base station, place, assistant service community switching time, what base station, place, assistant service community can be semi-static gives main serving BS by off state and switching time by the direct interface report in base station.

More than be described with reference to the accompanying drawings technical scheme of the present invention, due in correlation technique, do not consider the on off state of community, so may choose a community of closing as the auxiliary Serving cell of target, user must wait until when open the auxiliary Serving cell of target and could access Target cell like this, thereby make user just only have main Serving cell that communication is provided in long-time, user's peak rate reduces.Serving BS in the present invention by user report, assistant service cell base station, assistant service community place macro base station or by self receiver obtain assistant service community on off state and switching time information.Further, based on assistant service community, the on off state when user prepares RRC and is connected to Target cell is distinguished into first and second liang of classes by assistant service is little to serving BS, and select best assistant service community, Class A according to residue opening time length, according to select the best assistant service community of Class B from the length of following start-up time time, finally select in all assistant services community best as Target cell.Thereby make user can access as soon as possible the auxiliary Serving cell of target, set up as early as possible communication, thereby reduce the time of user in low peak speed, improve user and experience.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1.Yi Zhong community plus-minus method, is characterized in that, comprising:

Main serving BS, after receiving the measurement report that plus-minus that terminal sends triggers, obtains in described measurement report the on off state information of each candidate's assistant service community and switching time information in a plurality of candidate's assistant services community;

Described main serving BS according to the on off state information of described each candidate's assistant service community and switching time information, from described a plurality of candidate's assistant services community, select the auxiliary Serving cell of target that described terminal be about to be added.

2. community according to claim 1 plus-minus method, is characterized in that, also comprises:

Described main serving BS obtains in described measurement report the signal strength information of each candidate's assistant service community in a plurality of candidate's assistant services community;

Described main serving BS, according to the on off state information of described each candidate's assistant service community, described switching time information and described signal strength information, is selected described terminal and is about to the auxiliary Serving cell of target of adding from described a plurality of candidate's assistant services community.

3. community according to claim 1 plus-minus method, is characterized in that, described main serving BS obtains in described measurement report the on off state information of each candidate's assistant service community and switching time information in a plurality of candidate's assistant services community, specifically comprises:

Terminal read each candidate's assistant service community described on off state information and described switching time information, and by described on off state information and described switching time information be sent to described main serving BS so that described main serving BS get described on off state information and described switching time information; Or

Described main serving BS sends assistant service community and adds request to the base station of described each candidate's assistant service community, and the base station that receives described each candidate's assistant service community by assistant service community add request answer described on off state information that signaling feeds back and described switching time information; Or

Described main serving BS sends information acquisition request to the macro base station at the place, base station of described each candidate's assistant service community, and receive described each candidate's assistant service community that described macro base station sends described on off state information and described switching time information; Or

Described main serving BS by downlink receiver read described each candidate's assistant service community described on off state information and described switching time information; Or

When described candidate's assistant service community belongs to lower time of control range of described main serving BS, and the on off state of described candidate's assistant service community and switching time be when controlled by the base station at described main serving BS place, directly from the base station at described main serving BS place, obtain described on off state information and described switching time information; Or

When described candidate's assistant service community belongs to lower time of control range of described main serving BS, and the on off state of described candidate's assistant service community and switching time be when controlled by the base station at place, described candidate's assistant service community, described main serving BS receive the described on off state information that sends from base station, place, described candidate's assistant service community and described switching time information.

4. community according to claim 3 plus-minus method, is characterized in that, described terminal read or described main serving BS by downlink receiver read described on off state information and described switching time information, specifically comprise:

Detect the cycle information of master sync signal information, auxiliary synchronous signals information and cell reference signals or the channel state information reference signals of described each candidate's assistant service community, with read described on off state information and described switching time information; And/or

Read the Radio Resource control information of the macrocell at candidate's assistant service community and/or place, candidate's assistant service community, and/or reading media access control layer information and/or physical layer information, with read described on off state information and described switching time information.

5. community according to claim 1 plus-minus method, it is characterized in that, described main serving BS according to the on off state information of described each candidate's assistant service community and switching time information, from described a plurality of candidate's assistant services community, select described terminal and be about to the auxiliary Serving cell of target of adding, specifically comprise:

The on off state information of adding the moment and described each candidate's assistant service community according to the expectation assistant service community of described terminal is by little first candidate's assistant service community and the second candidate's assistant service community of being distinguished into of described a plurality of candidate's assistant services, wherein, described first candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in opening constantly, and described second candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in closed condition constantly;

Information switching time of at least one candidate's assistant service community in described first candidate's assistant service community is compared, from described at least one candidate's assistant service community, select from described expectation assistant service community and add and constantly start to remain the longest first object assistant service community of opening time;

Information switching time of at least one candidate's assistant service community in described second candidate's assistant service community is compared, from described at least one candidate's assistant service community, select following start-up time and described expectation assistant service community and add the auxiliary Serving cell of the second the shortest target of time at intervals;

Whether the residue opening time that judges described first object assistant service community is greater than the default opening time, judgment result is that while being, select described first object assistant service community as the auxiliary Serving cell of described target, otherwise, select the auxiliary Serving cell of described the second target as the auxiliary Serving cell of described target.

6. community according to claim 2 plus-minus method, it is characterized in that, the on off state information of each candidate's assistant service community described in described basis, described switching time information and described signal strength information, from described a plurality of candidate's assistant services community, select described terminal and be about to the auxiliary Serving cell of target of adding, specifically comprise:

By at least one candidate's assistant service community in described first candidate's assistant service community switching time information and signal strength information compare, from described at least one candidate's assistant service community, select from described expectation assistant service community and add and constantly to start to remain the first object assistant service community that the opening time is the longest and signal strength signal intensity is the strongest;

By at least one candidate's assistant service community in described second candidate's assistant service community switching time information and signal strength information compare, from described at least one candidate's assistant service community, select following start-up time and described expectation assistant service community and add the auxiliary Serving cell of the second target that time at intervals is the shortest and signal strength signal intensity is the strongest;

7.Yi Zhong community adder-subtracter, for main serving BS, is characterized in that, comprising:

Acquiring unit, after receiving the measurement report that plus-minus that terminal sends triggers, obtains in described measurement report the on off state information of each candidate's assistant service community and switching time information in a plurality of candidate's assistant services community;

Selected cell, according to the on off state information of described each candidate's assistant service community and switching time information, from described a plurality of candidate's assistant services community, select the auxiliary Serving cell of target that described terminal be about to be added.

8. community according to claim 7 adder-subtracter, is characterized in that, described acquiring unit also for:

Obtain in described measurement report the signal strength information of each candidate's assistant service community in a plurality of candidate's assistant services community;

Described selected cell also for:

According to the on off state information of described each candidate's assistant service community, described switching time information and described signal strength information, from described a plurality of candidate's assistant services community, select described terminal and be about to the auxiliary Serving cell of target of adding.

9. community according to claim 7 adder-subtracter, is characterized in that, acquiring unit specifically for:

Receive each candidate's assistant service community that described terminal reads described on off state information and described switching time information; Or

To the base station of described each candidate's assistant service community, send assistant service community and add request, and the base station that receives described each candidate's assistant service community by assistant service community add request answer described on off state information that signaling feeds back and described switching time information; Or

Macro base station to the place, base station of described each candidate's assistant service community sends information acquisition request, and receive described each candidate's assistant service community that described macro base station sends described on off state information and described switching time information; Or

By downlink receiver read described each candidate's assistant service community described on off state information and described switching time information; Or

10. community according to claim 9 adder-subtracter, is characterized in that, described acquiring unit also comprises:

Detecting unit, detects the cycle information of master sync signal information, auxiliary synchronous signals information and cell reference signals or the channel state information reference signals of described each candidate's assistant service community, with read described on off state information and described switching time information; And/or

Reading unit, read the Radio Resource control information of the macrocell at described candidate's assistant service community and/or place, described candidate's assistant service community, and/or reading media access control layer information and/or physical layer information, with read described on off state information and described switching time information.

11. community according to claim 7 adder-subtracters, is characterized in that, described selected cell specifically comprises:

Division unit, the on off state information of adding the moment and described each candidate's assistant service community according to the expectation assistant service community of described terminal is by little first candidate's assistant service community and the second candidate's assistant service community of being distinguished into of described a plurality of candidate's assistant services, wherein, described first candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in opening constantly, and described second candidate's assistant service community is in described expectation assistant service community, to add the assistant service community in closed condition constantly;

The first comparing unit, information switching time of at least one candidate's assistant service community in described first candidate's assistant service community is compared, from described at least one candidate's assistant service community, select from described expectation assistant service community and add and constantly start to remain the longest first object assistant service community of opening time;

The second comparing unit, information switching time of at least one candidate's assistant service community in described second candidate's assistant service community is compared, from described at least one candidate's assistant service community, select following start-up time and described expectation assistant service community and add the auxiliary Serving cell of the second the shortest target of time at intervals;

Community selected cell, whether the residue opening time that judges described first object assistant service community is greater than the default opening time, judgment result is that while being, select described first object assistant service community as the auxiliary Serving cell of described target, otherwise, select the auxiliary Serving cell of described the second target as the auxiliary Serving cell of described target.

12. community according to claim 8 adder-subtracters, is characterized in that, described selected cell also comprises:

The first comparing unit, by at least one candidate's assistant service community in described first candidate's assistant service community switching time information and signal strength information compare, from described at least one candidate's assistant service community, select from described expectation assistant service community and add and constantly to start to remain the first object assistant service community that the opening time is the longest and signal strength signal intensity is the strongest;

The second comparing unit, by at least one candidate's assistant service community in described second candidate's assistant service community switching time information and signal strength information compare, from described at least one candidate's assistant service community, select following start-up time and described expectation assistant service community and add the auxiliary Serving cell of the second target that time at intervals is the shortest and signal strength signal intensity is the strongest;

13.Yi Zhong community adder-subtracter, for terminal, is characterized in that, comprising:

Reading unit, read each candidate's assistant service community in a plurality of candidate's assistant services community on off state information and switching time information;

Transmitting element, by described on off state information and described switching time information be sent to main serving BS.

14. community according to claim 13 adder-subtracters, is characterized in that, described reading unit specifically for:

Read the Radio Resource control information of the macrocell at described each candidate's assistant service community and/or described each place, candidate's assistant service community, and/or reading media access control layer information and/or physical layer information, with read described on off state information and described switching time information.

15. 1 kinds of base stations, is characterized in that, comprising: the community adder-subtracter as described in any one in claim 7 to 12.

16. 1 kinds of terminals, is characterized in that, comprising: the community adder-subtracter as described in claim 13 and 14.