CN106454876B - For the cell measuring method of flexible bandwidth, system and equipment - Google Patents

For the cell measuring method of flexible bandwidth, system and equipment Download PDF

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Publication number
CN106454876B
CN106454876B CN201510484857.XA CN201510484857A CN106454876B CN 106454876 B CN106454876 B CN 106454876B CN 201510484857 A CN201510484857 A CN 201510484857A CN 106454876 B CN106454876 B CN 106454876B
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information
target
measurement
carrier
terminal
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CN106454876A (en
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许森
孙震强
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists

Abstract

The invention discloses a kind of for the cell measuring method of flexible bandwidth, system and equipment, is related to wireless communication field.Serving BS is determining and sends the neighbor measurement informations such as the measurement carrier information of Target cell and the cell information of support extension carrier wave to terminal, terminal is known that the extension carrier wave configuring condition of Target cell according to neighbor measurement information, and then determine the carrier type that Target cell needs to measure, to avoid measuring error caused by blindly measuring.In addition, serving BS can also send the flexible bandwidth configuration information of Target cell to terminal, helps terminal that the search range of target side synchronization signal is correctly set, and correctly configure Measurement bandwidth, improve the accuracy of measurement.

Description

For the cell measuring method of flexible bandwidth, system and equipment
Technical field
The present invention relates to wireless communication field, in particular to a kind of cell measuring method for flexible bandwidth, system with And equipment.
Background technique
In current long term evolution (Long Term Evolution, LTE)/LTE-A agreement, LTE single carrier bandwidth is for example propped up Hold 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, several configurations such as 20MHz.However, the second generation (the 2G)/third generation (3G) communication The carrier bandwidths of multiple frequency points such as system such as global system for mobile communications (GSM)/wideband code division multiple access (WCDMA)/CDMA2000 The sum of be not LTE carrier bandwidths integral multiple.Such case, which will cause LTE, can not efficiently utilize 2G/3G frequency resource, lead Cause the waste of frequency resource.For this purpose, industry proposes " flexible bandwidth ", existing frequency money is efficiently used to more flexible Source, push 2G/3G frequency backsets work.
The principle of " flexible bandwidth " technology is as shown in Figure 1, be directed to the bandwidth of a such as downlink 7MHz, base station side is entire 7MHz carries out the transmitting of signal, can only be in work in tradition for the conventional terminal UE1 for not supporting " flexible bandwidth " 5MHz bandwidth on, remaining 2MHz bandwidth resources are unusable for conventional terminal UE1.For support " flexible bandwidth " Terminal UE 2 for, can both work in traditional 5MHz bandwidth, can also work extension 5MHz bandwidth on.It is new in this way In the 5MHz bandwidth that terminal and conventional terminal can work different, to solve the compatibility issue of carrier wave, frequency is realized It backsets.
In the present invention, the carrier wave for not supporting the terminal of flexible bandwidth that can access is known as main carrier, does not support flexible band The carrier wave that wide terminal can not access is known as extending carrier wave.On main carrier can according to 3GPP R12 and before version rule It is fixed, transmitting downlink common control signal, PBCH, synchronization signal etc..On the non-overlapping region of extension carrier wave and main carrier, do not send out Downlink common control signal, Physical Broadcast Channel (Physical Broadcast Channel, PBCH), synchronization signal etc. are sent, But still send public reference signal (Common Reference Signal, CRS) signal.Terminal works are led to when extending carrier wave Cross reading enhancing downlink physical control channel (enhanced Physical Downlink Control Channel, ePDCCH) To obtain the scheduling information and feedback information of base station side.Fig. 2 shows the frequency partition schematic diagrames of " flexible bandwidth ".
After introducing " flexible bandwidth " technology, for current LTE/LTE-A measurement there are certain influences.
For example, terminal can not determine whether to measure adjacent area, since adjacent area may exist without configuration " flexible band It is wide " the case where, if terminal adheres to measuring adjacent area according in extension carrier wave, since adjacent area is in extension carrier wave and main carrier Non-overlapping region on there is no signal, cause measurement result obviously less than normal, the performance of handoffs of terminal can be had an impact.If The only main carrier of configurating terminal measurement adjacent area will increase end since different-frequency measure needs the working frequency points of often adjustment receiver The measurement at end is born, and the increase of terminal power consumption is caused.
Summary of the invention
A technical problem to be solved by this invention is: the carrier wave of neighboring interval measures problem in flexible bandwidth technology.
According to the first aspect of the invention, a kind of cell measuring method for flexible bandwidth is provided, comprising: service base It stands and obtains the flexible bandwidth configuration information of target BS；Serving BS determines mesh according to the flexible bandwidth configuration information of target BS It marks the measurement carrier information of cell and supports the cell information of extension carrier wave；Serving BS sends neighbor measurement information to terminal, The neighbor measurement information includes the measurement carrier information of Target cell and the cell information for supporting extension carrier wave, so as to terminal root The carrier type for needing to measure to Target cell is determined according to the neighbor measurement information, and is measured.
Cell measuring method further include: serving BS sends the flexible bandwidth configuration information of target BS to terminal, so as to Terminal determines the measurement range of extension carrier wave according to the flexible bandwidth configuration information of target BS, or so that terminal is according to current The flexible bandwidth configuration information of working frequency and target BS determines the detection position of synchronization signal.
According to the second aspect of the invention, a kind of cell measuring method for flexible bandwidth is provided, comprising: terminal connects The neighbor measurement information that serving BS is sent is received, the neighbor measurement information includes measurement carrier information and the support of Target cell Extend the cell information of carrier wave；Terminal determines the carrier type for needing to measure to Target cell according to the neighbor measurement information, And it measures.
In one embodiment, terminal receives the flexible bandwidth configuration information for the target BS that serving BS is sent；Terminal The measurement range of extension carrier wave is determined according to the flexible bandwidth configuration information of target BS.
In one embodiment, terminal receives the flexible bandwidth configuration information for the target BS that serving BS is sent；Terminal The detection position of synchronization signal is determined according to the flexible bandwidth configuration information of present operating frequency and target BS.
According to the third aspect of the invention we, a kind of base station is provided, the base station is the current serving BS of terminal, described Base station includes: flexible bandwidth information acquisition unit, for obtaining the flexible bandwidth configuration information of target BS；Neighbor measurement information Determination unit determines the measurement carrier information of Target cell for the flexible bandwidth configuration information according to target BS and supports to expand The cell information of carrier wave is opened up, neighbor measurement information includes the measurement carrier information of Target cell and the cell letter for supporting extension carrier wave Breath；Neighbor measurement information transmission unit, it is described so that terminal is surveyed according to the adjacent area for sending neighbor measurement information to terminal Amount information determines the carrier type for needing to measure to Target cell, and measures.
According to the fourth aspect of the invention, a kind of terminal is provided, comprising: neighbor measurement information acquiring unit, for connecing The neighbor measurement information that serving BS is sent is received, the neighbor measurement information includes measurement carrier information and the support of Target cell Extend the cell information of carrier wave；Carrier wave determination unit is measured, for determining according to the neighbor measurement information to Target cell need The carrier type to be measured, and measure.
According to the fifth aspect of the invention, a kind of cell measurement system for flexible bandwidth, including third party are provided Terminal described in base station described in face and fourth aspect.
The present invention has at least the following advantages:
Serving BS is determining and sends the measurement carrier information of Target cell to terminal and supports the cell letter of extension carrier wave Neighbor measurement informations, the terminals such as breath are known that the extension carrier wave configuring condition of Target cell according to neighbor measurement information, in turn The carrier type that Target cell needs to measure is determined, to avoid measuring error caused by blindly measuring.In addition, serving BS is also The flexible bandwidth configuration information that Target cell can be sent to terminal, helps terminal that the search of target side synchronization signal is correctly arranged Range, and Measurement bandwidth is correctly configured, improve the accuracy of measurement.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its Advantage will become apparent.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art To obtain other drawings based on these drawings.
Fig. 1 shows the schematic illustration of flexible bandwidth technology.
Fig. 2 shows the frequency partition schematic diagrames of flexible bandwidth.
Fig. 3 shows the synchronization signal schematic diagram of flexible bandwidth.
Fig. 4 shows flow diagram of the present invention for cell synchronous method one embodiment of flexible bandwidth.
Fig. 5 shows flow diagram of the present invention for cell measuring method one embodiment of flexible bandwidth.
Fig. 6 shows flow diagram of the present invention for cell switching method one embodiment of flexible bandwidth.
Fig. 7 is structural schematic diagram of the present invention for the cell handover system of flexible bandwidth.
Fig. 8 A is the structural schematic diagram of 72 one embodiment of serving BS of the present invention.
Fig. 8 B is the structural schematic diagram of 72 another embodiment of serving BS of the present invention.
Fig. 9 A is the structural schematic diagram of 74 one embodiment of terminal of the present invention.
Fig. 9 B is the structural schematic diagram of 74 another embodiment of terminal of the present invention.
Figure 10 is the structural schematic diagram of target BS 76 of the present invention.
Figure 11 is structural schematic diagram of the present invention for the cell measurement system of flexible bandwidth.
Figure 12 is the structural schematic diagram of serving BS 112 of the present invention.
Figure 13 A is the structural schematic diagram of 114 one embodiment of terminal of the present invention.
Figure 13 B is the structural schematic diagram of 114 another embodiment of terminal of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Requirements of one's work are backsetted based on frequency, propose flexible bandwidth technology.Flexible bandwidth technology is to current communication Journey can generate some influences, such as the switching problem of the stationary problem of neighboring interval, the carrier wave measurement problem of neighboring interval, neighboring interval Deng.It will be described below after introducing flexible bandwidth technology, the solution of these problems.
After introducing flexible bandwidth technology, according to traditional synchronization mechanism, terminal can not capture the synchronization signal of adjacent area.With For LTE system, synchronization signal is usually located on the Physical Resource Block (PRB) of centre 6 of each carrier wave.With reference to shown in Fig. 3 Synchronization signal schematic diagram in flexible bandwidth extends and does not completely include synchronization signal on the PRB of centre 6 of carrier wave.
In order to solve the stationary problem in above-mentioned flexible bandwidth, the present invention proposes a kind of cell synchronous for flexible bandwidth Scheme.Referring to fig. 4, as follows for the cell synchronous scheme of flexible bandwidth:
In step S402, serving BS obtains the flexible bandwidth configuration information of target BS, and the target base that will acquire The flexible bandwidth configuration information stood is sent to terminal.Correspondingly, terminal receives the flexible band for the target BS that serving BS is sent Wide configuration information.
Flexible bandwidth configuration information therein for example may include the bandwidth (being indicated with B1) of main carrier, the band for extending carrier wave The information such as the total bandwidth (being indicated with B0) of wide (being indicated with B2), flexible bandwidth.Obviously, flexible bandwidth configuration information can also use it He mode indicates that the representation for being able to reflect the information such as the bandwidth for whether being configured with extension carrier wave and each carrier wave can adopt With.
Some illustrative methods, serving BS can be matched by X2 interface message or S1 interface message or network management Set the flexible bandwidth configuration information that message obtains target BS.
In step S404, terminal is determined according to the flexible bandwidth configuration information of present operating frequency and target BS and is synchronized The detection position of signal.
For example, by taking LTE system as an example, it, can be from the main load of target BS if terminal is currently operating on main carrier Detect synchronization signal in the center of wave；If terminal is currently operating on extension carrier wave, can be from the extension of target BS Position detection synchronization signal corresponding with main carrier center on carrier wave.If according to traditional synchronous method, in extension carrier wave Center position, which detects then, may be unable to get or can not all obtain synchronization signal.
In addition, terminal can detecte the primary synchronization signal (PSS) of LTE system according to above-mentioned synchronous method, then join again Examine the relative positional relationship of secondary synchronization signal (SSS), Physical Broadcast Channel (PBCH) and PSS, it can further detect SSS, PBCH, to complete cell synchronisation procedure.
After introducing flexible bandwidth technology, terminal can not determine whether to measure adjacent area.For the survey in flexible bandwidth Amount problem, the present invention propose a kind of cell measurement scheme for flexible bandwidth.It is same that cell has been completed before cell measurement Step, cell synchronisation procedure can also use other cell synchronous schemes using the scheme of embodiment corresponding to Fig. 4.Referring to Fig. 5, the cell measuring method for flexible bandwidth are as follows:
In step S502, serving BS obtains the flexible bandwidth configuration information of target BS.If carrying out cell synchronisation procedure The flexible bandwidth configuration information of target BS has been got, then has obtained target BS without repeating when carrying out cell measurement Flexible bandwidth configuration information.
In step S504, serving BS determines that the measurement of Target cell carries according to the flexible bandwidth configuration information of target BS Wave information and the cell information for supporting extension carrier wave.
If wherein target BS is configured with extension carrier wave, the measurement carrier information of Target cell can be configured to measurement target The main carrier and extension carrier wave of cell, if target BS does not configure extension carrier wave, the measurement carrier information of Target cell can It is configured to the main carrier of measurement Target cell.It is obvious also possible to the measurement carrier information of Target cell is determined using other methods, For example, the measurement carrier information of Target cell can be configured to the expansion of measurement Target cell if target BS is configured with extension carrier wave Open up carrier wave.
Wherein, if target BS is configured with extension carrier wave, all cells of target BS are each configured to that extension is supported to carry The cell of wave, conversely, all cells of target BS are not configured to support to expand if target BS does not configure extension carrier wave Open up the cell of carrier wave.
In step S506, serving BS sends neighbor measurement information to terminal, sends correspondingly, terminal receives serving BS Neighbor measurement information.In addition, serving BS can be by the flexible bandwidth configuration information and neighbor measurement information one of target BS It rises and is sent to terminal.
Neighbor measurement information includes the cell information of the measurement carrier information and support extension carrier wave of Target cell, in addition, Can also include the information such as measurement event and measurement of correlation parameter, measurement of correlation parameter for example including measurement amount, measurement gap, Thresholding etc., but it is not limited to examples cited.
Wherein, the measurement carrier information of Target cell can be indicated with 2 bit informations, for example, 10 indicate only to measure main load Wave, 01 indicates only measurement extension carrier wave, and 11 indicate while measuring main carrier and extension carrier wave, and 00 is reserved.
Wherein, it supports the cell information of extension carrier wave that can for example realize by the way of list, supports extension carrier wave Cell ID List, it is only effective when measuring carrier information and being set as 01 or 11.
In step S508, terminal determines the carrier type for needing to measure to Target cell according to neighbor measurement information.Wherein A kind of illustrative determining method is as follows:
If the measurement carrier information of Target cell indicates measurement main carrier, it is determined that carried out to the main carrier of Target cell Measurement；Or if Target cell measurement carrier information indicate measurement extension carrier wave, and support extension carrier wave cell letter There is no Target cell in breath, it is determined that do not measure to Target cell；Or if Target cell measurement carrier information table Show measurement extension carrier wave, and support there is Target cell in the cell information for extending carrier wave, it is determined that the extension to Target cell Carrier wave measures；Or it if the measurement carrier information of Target cell indicates measurement main carrier and extension carrier wave, and supports Extending in the cell information of carrier wave has Target cell, it is determined that main carrier and extension carrier wave to Target cell measure；Or If the measurement carrier information of person's Target cell indicates measurement main carrier and extension carrier wave, and supports the cell letter of extension carrier wave There is no Target cell in breath, it is determined that measure to the main carrier of Target cell.
In step S510, terminal determines carrier wave measurement range based on the flexible bandwidth configuration information of target BS, wherein expands The measurement range for opening up carrier wave is [F-B1/2+B0-B2, F-B1/2+B0], wherein F indicates the center frequency point of main carrier, and broadcast disappears It is announced in breath, B0 indicates flexible carrier wave total bandwidth, and B2 indicates the bandwidth of extension carrier wave, and B1 indicates the bandwidth of main carrier.Main carrier Measurement range be [F-B1/2, F+B1/2].
Obviously, the execution of step 508 and step S510 in no particular order sequence.
In step S512, carrier type that terminal needs to measure according to determining Target cell and carrier wave measurement range into The corresponding measurement of row, such as the measurement such as Reference Signal Received Power (RSRP) and/or Reference Signal Received Quality (RSRQ).
Above-mentioned cell measuring method, it is determining by serving BS and to terminal send Target cell measurement carrier information and Neighbor measurement informations, the terminals such as the cell information of extension carrier wave is supported to be known that the expansion of Target cell according to neighbor measurement information Carrier wave configuring condition is opened up, and then determines the carrier type that Target cell needs to measure, to avoid measurement caused by blindly measuring Mistake.In addition, serving BS can also send the flexible bandwidth configuration information of Target cell to terminal, terminal is helped correctly to be arranged The search range of target side synchronization signal, and Measurement bandwidth is correctly configured, improve the accuracy of measurement.
The present invention also proposes a kind of cell handover scheme, and terminal can be made to be directly switch to from the extension carrier wave of serving cell The extension carrier wave of Target cell is switched to extension carrier wave without the main carrier for being first switched to target side, then from main carrier, can drop Low switching time delay.Terminal has completed cell measurement before cell switching, and cell measurement procedure can be using real corresponding to Fig. 5 The scheme of example is applied, other cell measurement schemes can also be used.
Referring to Fig. 6, the cell switching method for flexible bandwidth is as follows:
In step S602, serving BS obtains the measurement result for the Target cell that terminal reports, in the measurement of Target cell It as a result include the identification information of carrier type corresponding to each measurement result in, carrier type therein includes main carrier and extension Carrier wave.
In step S604, serving BS judges whether terminal meets switching condition, if terminal meets switching condition, to target Target BS belonging to cell sends switching request, and the measurement result and terminal capability of Target cell are carried in switching request.Eventually End ability indicates whether terminal supports flexible carrier wave.
Wherein, serving BS can the carrier type according to corresponding to measurement result and each measurement result handoff threshold Judge whether to meet switching condition, wherein different carrier types is configured with different handoff thresholds.It is more flexible to realize Switching.
In step S606, target BS is in response to switching request, according to the measurement result of Target cell, the band of target BS Wide ability and terminal capability determine the carrier type that terminal needs to access.
A kind of method for the carrier type that illustrative determining terminal needs to access is as follows:
If the bandwidth ability of target BS indicates target BS and do not configure flexible bandwidth, or if Target cell Only have the measurement result of main carrier in measurement result or terminal does not support flexible bandwidth, it is determined that terminal needs to access main load Wave；Or
If the bandwidth ability of target BS indicates that target BS is configured with flexible bandwidth, and the measurement knot of Target cell The measurement result of carrier wave is only extended in fruit, and terminal supports flexible bandwidth, it is determined that terminal needs to access extension carrier wave；Or Person
If the bandwidth ability of target BS indicates that target BS is configured with flexible bandwidth, and the measurement knot of Target cell It include main carrier and the measurement result for extending carrier wave in fruit, and terminal supports flexible bandwidth, then according to preset strategy from main load One carrier wave of selection is determined as the carrier wave that terminal needs to access in wave and extension carrier wave.
Preset strategy therein for example may is that target BS according to the information on load of each carrier wave, resource occupation information, letter In number quality information at least one of information, one carrier wave of selection is determined as terminal and needs to access from main carrier and extension carrier wave Carrier wave.Alternatively, precedence information of the target BS according to preconfigured different type carrier wave, from main carrier and extension carrier wave One carrier wave of middle selection is determined as the carrier wave that terminal needs to access.
In step S608, target BS returns to handoff response to serving BS, and carried terminal needs to access in handoff response The identification information of the carrier type of carrier wave, and if identification information indicates that terminal needs to access extension carrier wave, handoff response In also carry the flexible bandwidth configuration information of target BS.
In the handoff response that step S610, serving BS are returned in response to target BS, switching command is sent to terminal, with Instruction terminal switches over, and switching command carried terminal needs the identification information of the carrier type of access carrier, and if knows Other information indicates that terminal needs to access extension carrier wave, then the flexible bandwidth configuration information of target BS is also carried in switching command, So that terminal is switched on the corresponding carrier wave of Target cell according to switching command.
Wherein, if switching command instruction terminal is switched to extension carrier wave, terminal can be according to the flexible band of target BS Wide configuration information is directly from the extension carrier switch of serving BS to the extension carrier wave of Target cell.
In the present invention, a cell switch process can use cell synchronous scheme, Fig. 5 of embodiment corresponding to Fig. 4 The cell handover scheme of embodiment corresponding to the cell measurement scheme and Fig. 6 of corresponding embodiment.Cell switch process is specific Process is as follows:
In step 1, support that the base station of flexible bandwidth can be by X2 message or S1 message or network management configuration message this base The flexible bandwidth configuration information stood is notified to base station belonging to this base station neighboring community.Wherein flexible bandwidth configuration information include but Be not limited to: the bandwidth B 1 of main carrier, the bandwidth B 2 for extending carrier wave, flexible bandwidth total bandwidth B0.
In step 2, serving BS determines the measurement carrier information of the adjacent area according to the flexible bandwidth configuration information of adjacent area, And determine the cell list for supporting extension carrier wave, so that terminal determines whether to measurement extension carrier wave when measuring the adjacent area.
In step 3, the terminal that serving BS is switched on adjacent area extension carrier wave preparation sends spirit by high-level signaling Band width configuration information living and neighbor measurement information.
Wherein flexible bandwidth configuration information including but not limited to: extend the bandwidth B 2 of carrier wave, the total bandwidth B0 of flexible bandwidth.
Wherein neighbor measurement information includes but is not limited to following content:
The measurement carrier information of Target cell: 2 bit informations are indicated only to measure main carrier when being 10, be indicated only when being 01 Measurement extension carrier wave, 11 indicate while measuring main carrier and extension carrier wave, and 00 is reserved.
Support the cell list (PCI list) of extension carrier wave.Only enabling extension carrier wave measurement, measurement carrier information setting It is effective when being 01 and 11.
Measurement event and measurement of correlation parameter: for example including measurement amount and the measurement letter such as gap (GAP) and thresholding Breath, but it is not limited to examples cited.
In step 4, after terminal receives the configuration message of serving BS, terminal is configured based on the flexible bandwidth of target BS Information determines carrier wave measurement range, wherein the measurement range for extending carrier wave is [F-B1/2+B0-B2, F-B1/2+B0], wherein F It indicates the center frequency point of main carrier, is announced in broadcast message, B0 indicates flexible carrier wave total bandwidth, and B2 indicates the band of extension carrier wave Width, B1 indicate the bandwidth of main carrier.The measurement range of main carrier is [F-B1/2, F+B1/2].Then according to the configuration of base station side Complete the measurement for RSRP and/or RSRQ.
In step 5, terminal determines synchronous letter according to the flexible bandwidth configuration information of present operating frequency and target BS Number detection position, and synchronize, obtain the PCI information of Target cell.
The small of carrier wave is extended in the measurement carrier information for the Target cell that step 6, terminal are issued according to base station and support Area's list determines the carrier type for needing to measure to Target cell.
" the measurement carrier information of Target cell " if of base station side setting is " 10 ", only for the master of Target cell The range of carrier wave measures, if being set as " 01 " and neighbor measurement information that the PCI information is not issued in base station " supports extension In the cell list of carrier wave ", then for the adjacent cell without measurement.If being set as " 01 " and the PCI information under base station In the neighbor measurement information " cell list for supporting extension carrier wave " of hair, then extension carrier wave is only measured for Target cell.If setting Be set to " 11 " and the PCI information be in neighbor measurement information that base station issues " cell list for supporting extension carrier wave ", then for Target cell measures extension carrier wave and main carrier simultaneously.If being set as " 11 " and adjacent area that the PCI information is not issued in base station In metrical information " cell list for supporting extension carrier wave ", then main carrier is only measured for Target cell.
In step 7, if the measurement result of Target cell meets related thing in the metrical information of the adjacent area of serving BS configuration The trigger condition of part, then terminal is to serving base stations report measurement result.In the measurement result for the adjacent area reported at the terminal, setting 1 It is the main carrier or extension carrier wave for the Target cell that bit identification information, which is used to distinguish each measurement result,.
In step 8, the measurement result that serving BS discovery terminal reports meets switching condition, takes in switching request message The measurement result of tape terminal is notified to target BS belonging to Target cell.It can be with carried terminal energy in switching request message Power,
In step 9, target BS belonging to Target cell according to the measurement result of terminal, the bandwidth ability of target BS, And terminal capability determines the carrier type of terminal access, determines that method is as follows:
If target BS does not configure the measurement result that flexible bandwidth or terminal have only reported main carrier, according to existing Handover mechanism execute subsequent operation, and terminal switching after be only capable of work on main carrier.If target BS is provided with flexible Bandwidth, and terminal has only reported the measurement result of extension carrier wave, then determines that terminal is only capable of work on extension carrier wave, and after execution Continuous receiving process.If terminal has reported the measurement result of extension carrier wave and main carrier, according to the load condition of two carrier waves or The height of person's signal quality or pre-set precedence information determine the carrier wave being resident after terminal switching.
In step 10, the resident carrier information after target BS switches terminal is indicated to service by switching response message Base station.Carried terminal needs the identification information of the carrier type of access carrier in handoff response, and if identification information indicates Terminal needs to access extension carrier wave, then the flexible bandwidth configuration information of target BS is carried in handoff response also to assist terminal to connect Enter, so that serving BS instruction terminal accesses on corresponding carrier wave.
In step 11, after serving BS receives switching response message, switching command is sent to terminal, is carried out with instruction terminal Switching, switching command carried terminal needs the identification information of the carrier type of access carrier, and if identification information indicates eventually End needs to access extension carrier wave, then the flexible bandwidth configuration information of target BS is carried in switching command, also to assist terminal to cut It changes.
In step 12, after terminal receives switching command, it is linked on the corresponding carrier wave of Target cell according to switching command, if Switching command instruction terminal is switched to extension carrier wave, then terminal can according to the flexible bandwidth configuration information of target BS directly from Extension carrier wave of the extension carrier switch of serving BS to Target cell.
Above-mentioned cell switch process, by supporting the base station of flexible bandwidth that the configuring condition of flexible bandwidth is referred to by interface Show the carrier wave candidate collection to the adjacent area of surrounding, when surrounding adjacent area determines that terminal measures according to the configuration information.Serving BS (or Claim source base station) the carrier wave candidate collection of flexible bandwidth configuration information and nearby region measurement is allocated to work on extension carrier wave Terminal, terminal determine whether to the signal matter on the extension carrier wave of measurement Target cell according to the carrier wave candidate collection of nearby region measurement Amount and/or signal strength, and by the adjacent area for the condition that meets main carrier and/or extension carrier wave on signal quality and/or letter Number strength reporting to serving BS, serving BS if it find that the signal strength and/or signal quality of adjacent area meet switching condition, Measurement result of the terminal on main carrier and/or extension carrier wave is then indicated to target BS, target by switching request message Base station determines the resident carrier wave of terminal according to the currently measurement result of the loading condition of itself and terminal, and is rung by switching Response message is answered to select situation and relevant configuration information to notify carrier wave to serving BS.Carrier wave is selected situation by serving BS And relevant configuration information notifies that, to terminal, terminal indicates that information accesses on the correlated carrier wave of target BS according to base station.It should Scheme is smaller to the change of network side, has good exploitativeness, easy to spread.
The application example of some cell switchings is set forth below.
Application example 1
In this example, terminal UE 1 supports flexible bandwidth.Serving BS supports the bandwidth setting of 25MHz, and target BS only props up Hold the setting of 20MHz bandwidth.Currently without X2 interface between serving BS and target BS, need to realize letter by establishing X2 interface The interaction of breath.Serving BS contains three sectors, and wherein terminal UE 1 is located at the edge of Cell 01.Target BS also contains Three sectors, UE1 will be switched to Cell 11.Wherein the PCI of Cell 11 is PCI 20.
Step 1: serving BS initiates the X2 establishment process with target BS, and wherein serving BS is established in X2 and requested Following information is carried in (X2SETUP REQUEST) message:
1) bandwidth of main carrier: 20MHz
2) total bandwidth of flexible bandwidth: 25MHz
3) bandwidth of carrier wave: 20MHz is extended
Step 2: target BS is due to establishing response (X2SETUP in the X2 of feedback currently without configuration flexible bandwidth RESPONSE the configuration information of flexible bandwidth) is not carried in message.
Step 3: serving BS determines the PCI of three cells of target BS support according to X2SETUP RESPONSE message It is all not provided in " cell list for supporting extension carrier wave " of neighbor measurement information.
Step 4: serving BS, which prepares for terminal UE 1 to be switched on extension carrier wave, to work, and utilizes wireless heterogeneous networks It is that the terminal configures flexible bandwidth information and neighbour that connection reconfiguration, which sets (RRC Connection Reconfiguration) message, Region measurement information.
Wherein flexible bandwidth information may include following information:
Extend the bandwidth 20MHz of carrier wave；
The total bandwidth 25MHz of flexible bandwidth.
Wherein neighbor measurement information contains following information:
The measurement carrier information of Target cell: 11；
It supports in the cell list of extension carrier wave without PCI20；
The measurement event and dependent threshold parameter of configuration: A3 measurement event.
Step 5: terminal UE 1 receives recording-related information after the configuration message, as the benchmark of subsequent measurement, and feeds back nothing Line resources control connection reconfiguration sets completion (RRC Connection Reconfiguration Complete) message.
Step 6: terminal UE 1 determines the inspection of PSS/SSS/PBCH according to the configuration of present operating frequency and flexible bandwidth Location is set.And the PCI information of adjacent area is detected on this position, and detect PCI20.It was found that PCI20 does not believe in nearby region measurement In the cell list of the support extension carrier wave of breath, therefore main carrier is only measured for the adjacent area for terminal determination.
Step 7: the signal strength that terminal UE 1 measures Target cell meets trigger condition, therefore to serving base stations report Measurement result.
Step 8:, can switching flow is handled according to 3GPP R12 and before in version after serving BS receives. If meeting switching condition, terminal can be switched to the main carrier of Target cell.
Application example 2
In this example, terminal UE 1 supports flexible bandwidth.Serving BS supports the bandwidth setting of 25MHz, and target BS is supported The setting of 25MHz bandwidth.Currently there is X2 interface between serving BS and target BS, target BS is preceding at some time point not to match Set flexible bandwidth, triggering is indicated to serving BS its parameter by X2 message and changes with postponing.Serving BS contains three A sector, wherein terminal UE 1 is located at the edge of Cell 01.Target BS also contains three sectors, and UE1 will be switched to Cell 11.Wherein the PCI of Cell 11 is PCI 20.
Step 1: target BS initiates the X2 renewal process with serving BS, and wherein target BS is in base station configuration updating Following information is carried in (eNB Configuration Update) message:
1) bandwidth of main carrier: 20MHz
2) total bandwidth of flexible bandwidth: 25MHz
3) bandwidth of carrier wave: 20MHz is extended
Step 2: serving BS receives eNB Configuration Update message, it is thus understood that target BS is supported flexible Band width configuration, therefore " extension is supported to carry for what the PCI for three cells that target BS is supported was arranged into neighbor measurement information The cell list of wave ".And feed back base station configuration updating confirmation (eNB Configuration Update ACK) message.
Step 3: serving BS, which prepares for terminal UE 1 to be switched on extension carrier wave, to work, and utilizes RRC Connection Reconfiguration message is that the terminal configures flexible bandwidth information and neighbor measurement information.
Wherein flexible bandwidth information may include following information:
Extend the bandwidth 20MHz of carrier wave；
The total bandwidth 25MHz of flexible bandwidth.
Wherein neighbor measurement information contains following information:
The measurement carrier information of Target cell: 11.
Support there is PCI20 in the cell list of extension carrier wave
The measurement event and dependent threshold parameter of configuration: A3 measurement event.
Step 4: terminal UE 1 receives recording-related information after the configuration message, as the benchmark of subsequent measurement, and feeds back RRC Connection Reconfiguration Complete。
Step 5: terminal UE 1 determines the inspection of PSS/SSS/PBCH according to the configuration of present operating frequency and flexible bandwidth Location is set, and detects the PCI information of adjacent area on this position, and detect PCI20.It was found that PCI20 is in neighbor measurement information In support extend carrier cell list, and the measurement carrier information of Target cell is 11, it is thus determined that terminal surveys the adjacent area Measure main carrier and extension carrier wave.
Step 6: the signal strength that terminal UE 1 measures Target cell meets trigger condition, therefore to serving base stations report Measurement result.1 independent identifier is used after wherein extending the measurement result RSRQ and RSRP of carrier wave, indicates to measure with main carrier As a result differentiation.
Step 7: after serving BS receives, sending switching request (HO Request) to CELL11 said target base station and disappear It ceases, the measurement result RSRQ and/or RSRP of terminal is carried in message, wherein carrying 1 after the measurement result of extension carrier wave solely Vertical identifier, indicates the differentiation with main carrier measurement result.
Step 8: after target BS receives, discovery wherein carries main carrier respectively and extends the measurement result RSRQ of carrier wave And/or RSRP, since main carrier is higher by the interference of adjacent frequency, the numerical value of RSRQ will be significantly lower than extension carrier wave RSRQ value, therefore target BS determines to be placed into terminal on extension carrier wave.
Step 9: target BS carries the flexible of target BS in switching request response (HO Request ACK) message Band width configuration information and the target selection information for being indicated to terminal.It include the frequency point of target side main carrier in target selection information Number, PCI and 1 bit identification information are linked into extension carrier wave wherein 1 bit identification information is used to indicate terminal needs.
Step 10: serving BS is after receiving HO Request ACK message, the flexible bandwidth of relevant target BS Configuration information and the target selection use of information switching command for being indicated to terminal are sent to terminal UE 1.
Step 11: after terminal UE 1 receives, according to the frequency point instruction information in switching command (that is, 1 bit identification letter Breath), it is thus understood that it needs to be linked into the extension carrier wave of target BS, and is directly accessed according to the flexible bandwidth configuration information of target side To the extension carrier wave of Target cell.
Application example 3
In this example, terminal UE 1 supports flexible bandwidth.Serving BS supports the bandwidth setting of 25MHz, and target BS is supported The setting of 25MHz bandwidth.Currently without X2 interface between serving BS and target BS, target BS does not have before at some time point Configure flexible bandwidth, triggering is indicated to serving BS its parameter by S1 message and changes with postponing.Serving BS contains Three sectors, wherein terminal UE 1 is located at the edge of Cell 01.Target BS also contains three sectors, and UE1 will be switched to Cell 11.Wherein the PCI of Cell 11 is PCI 20.
Step 1: target BS initiates S1 update message and gives mobility management entity (MME), and wherein target BS is in base station Following information is carried in configuration conversion (eNB Configuration Transfer) message:
1) bandwidth of main carrier: 20MHz
2) total bandwidth of flexible bandwidth: 25MHz
3) bandwidth of carrier wave: 20MHz is extended
After step 2:MME receives the message, the configuration information of flexible bandwidth is placed on mobility management entity configuration and is turned It changes in (MME Configuration Transfer) message and is indicated to serving BS.
Step 3: serving BS receives MME Configuration Transfer message, it is thus understood that target BS supports spirit Band width configuration living, therefore " the support extension carrier wave to neighbor measurement information is arranged in the PCI of three cells of target BS support Cell list " in.And feed back base station configuration updating confirmation (eNB Configuration Update ACK) message.
Step 4: serving BS, which prepares for terminal UE 1 to be switched on extension carrier wave, to work, and utilizes RRC Connection Reconfiguration message is that the terminal configures flexible bandwidth information and neighbor measurement information.
Wherein flexible bandwidth configuration information has included at least following information:
Extend the bandwidth 20MHz of carrier wave；
The total bandwidth 25MHz of flexible bandwidth.
And neighbor measurement information contains following information:
The measurement carrier information of Target cell: 11；
Support there is PCI20 in the Cell ID List of extension carrier wave；
The measurement event and dependent threshold parameter of configuration: A3 measurement event.
Step 5: terminal UE 1 receives recording-related information after the configuration message, as the benchmark of subsequent measurement, and feeds back RRC Connection Reconfiguration Complete。
Step 6: terminal UE 1 determines the inspection of PSS/SSS/PBCH according to the configuration of present operating frequency and flexible bandwidth Location is set, and detects the PCI information of adjacent area on this position, and detect PCI20.It was found that PCI20 is in neighbor measurement information Support extension carrier wave cell list in, and the measurement carrier information of Target cell is 11, thus for terminal determine for The nearby region measurement main carrier and extension carrier wave.
Step 7: the signal strength that terminal UE 1 measures Target cell meets trigger condition, therefore to serving base stations report Measurement result.1 independent identifier is used after wherein extending the measurement result RSRQ and RSRP of carrier wave, indicates to measure with main carrier As a result differentiation.
Step 8: after serving BS receives, sending switching request (HO Request) to CELL11 said target base station and disappear It ceases, the measurement result RSRQ and/or RSRP of terminal is carried in message, wherein carrying 1 after the measurement result of extension carrier wave solely Vertical identifier, indicates the differentiation with main carrier measurement result.
Step 9: after target BS receives, discovery wherein carries main carrier respectively and extends the measurement result RSRQ of carrier wave And/or RSRP, since main carrier is higher by the interference of adjacent frequency, the numerical value of RSRQ will be significantly lower than extension carrier wave RSRQ value, therefore target BS determines to be placed into terminal on extension carrier wave.
Step 10: target BS carries the flexible of target BS in switching request response (HO Request ACK) message Band width configuration information and the target selection information for being indicated to terminal.It include the frequency point of target side main carrier in target selection information Number, PCI and 1 bit identification information are linked into extension carrier wave wherein 1 bit identification information is used to indicate terminal needs.
Step 11: serving BS is after receiving HO Request ACK message, the flexible bandwidth of relevant target BS Configuration information and the target selection use of information switching command for being indicated to terminal are sent to terminal UE 1.
Step 12: after terminal UE 1 receives, according to the frequency point instruction information in switching command (that is, 1 bit identification letter Breath), it is thus understood that it needs to be linked into the extension carrier wave of target BS, and is directly accessed according to the flexible bandwidth configuration information of target side To the extension carrier wave of Target cell.
Fig. 7 is structural schematic diagram of the present invention for the cell handover system of flexible bandwidth.As shown in fig. 7, cell switches System 700 includes serving BS 72, terminal 74 and target BS 76.
Fig. 8 A is the structural schematic diagram of 72 one embodiment of serving BS of the present invention.As shown in Figure 8 A, serving BS 72 wraps It includes:
Neighbor measurement information transmission unit 724, for sending neighbor measurement information to terminal, neighbor measurement information includes mesh It marks the measurement carrier information of cell and supports the cell information of extension carrier wave, so that terminal is determined according to neighbor measurement information to mesh The carrier type that mark cell needs to measure, and measure；
Measurement result acquiring unit 725, for obtaining the measurement result for the Target cell that terminal reports, in Target cell In measurement result include each measurement result corresponding to carrier type identification information, carrier type therein include main carrier and Extend carrier wave；
Switching treatmenting unit 726, for judging whether terminal meets switching condition, if terminal meets switching condition, to mesh It marks target BS belonging to cell and sends switching request, the measurement result and terminal capability of Target cell are carried in switching request, So that target BS is in response to switching request, according to the measurement result of Target cell, the bandwidth ability of target BS and terminal Ability determines the carrier wave that terminal needs to access, and returns to handoff response, and carried terminal needs the load of access carrier in handoff response The identification information of wave type, and if identification information indicates that terminal needs to access extension carrier wave, it is also carried in handoff response The flexible bandwidth configuration information of target BS；
Switching command unit 727, the handoff response for returning in response to target BS send switching command to terminal, It being switched over instruction terminal, switching command carried terminal needs the identification information of the carrier type of access carrier, and if Identification information indicates that terminal needs to access extension carrier wave, then the flexible bandwidth of target BS is also carried in switching command with confidence Breath, so that terminal is switched on the corresponding carrier wave of Target cell according to switching command.
Fig. 8 B is the structural schematic diagram of 72 another embodiment of serving BS of the present invention.As shown in Figure 8 B, serving BS 72 Further include: flexible bandwidth information acquisition unit 721 and neighbor measurement information determination unit 722 and/or flexible bandwidth information hair Send unit 723；
Flexible bandwidth information acquisition unit 721, for obtaining the flexible bandwidth configuration information of target BS；
Neighbor measurement information determination unit 722, for determining that target is small according to the flexible bandwidth configuration information of target BS The measurement carrier information in area and the cell information for supporting extension carrier wave, wherein if target BS is configured with extension carrier wave, target The measurement carrier information of cell is configured to the main carrier and extension carrier wave of measurement Target cell, if target BS does not configure extension Carrier wave, then the measurement carrier information of Target cell is configured to the main carrier of measurement Target cell；
Flexible bandwidth information transmitting unit 723, for sending the flexible bandwidth configuration information of target BS to terminal, so as to Terminal determines the detection position of synchronization signal according to the flexible bandwidth configuration information of present operating frequency and target BS, or So that terminal is according to the measurement range of the determining extension carrier wave of the flexible bandwidth configuration information of target BS.
Flexible bandwidth information acquisition unit 721, for being matched by X2 interface message or S1 interface message or network management Set the flexible bandwidth configuration information that message obtains target BS.
Switching treatmenting unit 726 when judging whether terminal meets switching condition, be specifically used for according to measurement result and The handoff threshold of carrier type corresponding to each measurement result judges whether to meet switching condition, wherein different carrier types Configured with different handoff thresholds.
Fig. 9 A is the structural schematic diagram of 74 one embodiment of terminal of the present invention.As shown in Figure 9 A, terminal 74 includes:
Measurement result reporting unit 746, for the measurement result to serving base stations report to Target cell, in Target cell Measurement result in include that each measurement result correspond to the identification information of carrier type, carrier type therein include main carrier with Carrier wave is extended, is switched over so that the measurement result of Target cell is sent to target BS belonging to Target cell by serving BS Decision；
It is small to be linked into target according to switching command for switch unit 747, the switching command for sending in response to serving BS On the corresponding carrier wave in area, switching command carried terminal needs the identification information of the carrier type of access carrier, and if identification Information indicates that terminal needs to access extension carrier wave, then the flexible bandwidth configuration information access of target BS is also carried in switching command Onto the corresponding carrier wave of Target cell.
Fig. 9 B is the structural schematic diagram of 74 another embodiment of terminal of the present invention.As shown in Figure 9 B,
Terminal 74 further include: neighbor measurement information acquiring unit 744, for receiving the nearby region measurement letter of serving BS transmission Breath, neighbor measurement information include the measurement carrier information of Target cell and the cell information for supporting extension carrier wave；It is true to measure carrier wave Order member 745, for determining the carrier wave for needing to measure to Target cell according to neighbor measurement information.
Carrier wave determination unit 745 is measured, is specifically used for: if the measurement carrier information of Target cell indicates to measure main load Wave, it is determined that the main carrier of Target cell is measured；Or if the measurement carrier information of Target cell indicates that measurement is expanded Carrier wave is opened up, and supports do not have Target cell in the cell information for extending carrier wave, it is determined that Target cell is not measured；Or If the measurement carrier information of person's Target cell indicates measurement extension carrier wave, and supports there is mesh in the cell information for extending carrier wave Mark cell, it is determined that measure to the extension carrier wave of Target cell；Or if the measurement carrier information of Target cell indicates Main carrier and extension carrier wave are measured, and supports there is Target cell in the cell information for extending carrier wave, it is determined that Target cell Main carrier and extension carrier wave measure；Or if the measurement carrier information of Target cell indicates measurement main carrier and extension Carrier wave, and support there is no Target cell in the cell information for extending carrier wave, it is determined that the main carrier of Target cell is surveyed Amount.
Terminal 74 further include: flexible bandwidth information acquisition unit 741 and measurement range determination unit 742 and/or synchronization Detecting signal unit 743；Wherein,
Flexible bandwidth information acquisition unit 741, the flexible bandwidth configuration of the target BS for receiving serving BS transmission Information；
Measurement range determination unit 742, for determining extension carrier wave according to the flexible bandwidth configuration information of target BS Measurement range；
Synchronous signal detection unit 743, for matching confidence according to the flexible bandwidth of present operating frequency and target BS Cease the detection position for determining synchronization signal.
Figure 10 is the structural schematic diagram of target BS 76 of the present invention.As shown in Figure 10, target BS 76 includes:
Switching request acquiring unit 762, for receiving the switching request of serving BS transmission, carried terminal in switching request It include that each measurement result corresponds to carrier wave in the measurement result of Target cell to the measurement result and terminal capability of Target cell The identification information of type, carrier type therein include main carrier and extension carrier wave；
Switching treatmenting unit 764, for according to the measurement result of Target cell, the bandwidth ability of target BS and terminal Ability determines that terminal needs the carrier wave that accesses, and returns to handoff response to serving BS, and carried terminal needs connect in handoff response Enter the identification information of the carrier type of carrier wave, and if identification information indicates that terminal needs to access extension carrier wave, switches sound The flexible bandwidth configuration information of target BS is carried in answering, also so that serving BS instruction terminal accesses on corresponding carrier wave.
Switching treatmenting unit 764 is specifically used for: if the bandwidth ability of target BS indicates that target BS does not configure spirit Bandwidth living, perhaps if the measurement result or terminal of only main carrier do not support flexible band in the measurement result of Target cell It is wide, it is determined that terminal needs to access main carrier；Or if the bandwidth ability of target BS indicates that target BS is configured with flexibly Bandwidth, and the measurement result of carrier wave is only extended in the measurement result of Target cell, and terminal supports flexible bandwidth, then really Determine terminal and needs to access extension carrier wave；Or if the bandwidth ability of target BS indicates that target BS is configured with flexible bandwidth, And it include main carrier and the measurement result for extending carrier wave in the measurement result of Target cell, and terminal supports flexible bandwidth, Then according to preset strategy, one carrier wave of selection is determined as the carrier wave that terminal needs to access from main carrier and extension carrier wave.
Switching treatmenting unit 764 is selecting a carrier wave to be determined as end according to preset strategy from main carrier and extension carrier wave It includes: according at least one in the information on load of each carrier wave, resource occupation information, signal quality information that end, which needs the carrier wave accessed, Item information, one carrier wave of selection is determined as the carrier wave that terminal needs to access from main carrier and extension carrier wave；Or according to preparatory The precedence information of the different type carrier wave of configuration, one carrier wave of selection is determined as terminal needs from main carrier and extension carrier wave The carrier wave of access.
Target BS 76 further includes bandwidth ability notification unit, for by X2 interface message or S1 interface message or Flexible bandwidth configuration information is notified serving BS by person's network management configuration message, so that serving BS is according to flexible bandwidth configuration information Terminal is instructed to carry out nearby region measurement.
Figure 11 is structural schematic diagram of the present invention for the cell measurement system of flexible bandwidth.As shown in figure 11, cell is surveyed Amount system 1100 includes serving BS 112 and terminal 114.
Figure 12 is the structural schematic diagram of serving BS 112 of the present invention.As shown in figure 12, serving BS 112 includes:
Flexible bandwidth information acquisition unit 1122, for obtaining the flexible bandwidth configuration information of target BS；
Neighbor measurement information determination unit 1124, for determining that target is small according to the flexible bandwidth configuration information of target BS The measurement carrier information in area and the cell information for supporting extension carrier wave, neighbor measurement information include the measurement carrier wave letter of Target cell Breath and the cell information for supporting extension carrier wave；
Neighbor measurement information transmission unit 1126, for sending neighbor measurement information to terminal, so that terminal is according to adjacent area Metrical information determines the carrier type for needing to measure to Target cell, and measures.
Neighbor measurement information determination unit 1124 is specifically used in the measurement carrier information for determining Target cell: if mesh Mark base station is configured with extension carrier wave, then the measurement carrier information of Target cell is configured to main carrier and the extension of measurement Target cell Carrier wave, if target BS does not configure extension carrier wave, the measurement carrier information of Target cell is configured to measurement Target cell Main carrier.
Flexible bandwidth information acquisition unit 1122 is specifically used for through X2 interface message or S1 interface message or net Pipe configures the flexible bandwidth configuration information that message obtains target BS.
Serving BS 112 further include: flexible bandwidth information transmitting unit, the flexible bandwidth for sending target BS configure Information is to terminal, so that terminal is according to the measurement range of the determining extension carrier wave of the flexible bandwidth configuration information of target BS, or So that terminal determines according to the flexible bandwidth configuration information of present operating frequency and target BS the detection position of synchronization signal.
Figure 13 A is the structural schematic diagram of 114 one embodiment of terminal of the present invention.As shown in FIG. 13A, terminal 114 includes:
Neighbor measurement information acquiring unit 1144, for receiving the neighbor measurement information of serving BS transmission, nearby region measurement Information includes the measurement carrier information of Target cell and the cell information for supporting extension carrier wave；And
Carrier wave determination unit 1145 is measured, for determining the carrier wave for needing to measure to Target cell according to neighbor measurement information Type, and measure.
Measurement carrier wave determination unit 1145 is specifically used for: if the measurement carrier information of Target cell indicates to measure main load Wave, it is determined that the main carrier of Target cell is measured；Or if the measurement carrier information of Target cell indicates that measurement is expanded Carrier wave is opened up, and supports do not have Target cell in the cell information for extending carrier wave, it is determined that Target cell is not measured；Or If the measurement carrier information of person's Target cell indicates measurement extension carrier wave, and supports there is mesh in the cell information for extending carrier wave Mark cell, it is determined that measure to the extension carrier wave of Target cell；Or if the measurement carrier information of Target cell indicates Main carrier and extension carrier wave are measured, and supports there is Target cell in the cell information for extending carrier wave, it is determined that Target cell Main carrier and extension carrier wave measure；Or if the measurement carrier information of Target cell indicates measurement main carrier and extension Carrier wave, and support there is no Target cell in the cell information for extending carrier wave, it is determined that the main carrier of Target cell is surveyed Amount.
Figure 13 B is the structural schematic diagram of 114 one embodiment of terminal of the present invention.
As shown in Figure 13 B, terminal 114 further include: flexible bandwidth information acquisition unit 1141 and measurement range determine list Member 1142 and/or synchronous signal detection unit 1143；Wherein,
Flexible bandwidth information acquisition unit 1141, the flexible bandwidth configuration of the target BS for receiving serving BS transmission Information；
Measurement range determination unit 1142, for determining extension carrier wave according to the flexible bandwidth configuration information of target BS Measurement range；
Synchronous signal detection unit 1143, for matching confidence according to the flexible bandwidth of present operating frequency and target BS Cease the detection position for determining synchronization signal.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (22)

1. a kind of cell measuring method for flexible bandwidth, comprising:
The flexible bandwidth configuration information of serving BS acquisition target BS；
Serving BS determines the measurement carrier information of Target cell according to the flexible bandwidth configuration information of target BS and supports to expand Open up the cell information of carrier wave, wherein the measurement carrier information refers to the carrier wave that the needs that serving BS is indicated to terminal measure Type, the carrier type include at least one of main carrier and extension carrier wave；
Serving BS sends neighbor measurement information to terminal, and the neighbor measurement information includes the measurement carrier information of Target cell With the cell information for supporting extension carrier wave, Target cell is needed to measure according to neighbor measurement information determination so as to terminal Carrier type, and measure.
2. the method for claim 1, wherein the serving BS is true according to the flexible bandwidth configuration information of target BS The measurement carrier information for the cell that sets the goal includes:
If target BS is configured with extension carrier wave, the measurement carrier information of Target cell is configured to the main load of measurement Target cell Wave and extension carrier wave, if target BS does not configure extension carrier wave, the measurement carrier information of Target cell is configured to measurement mesh Mark the main carrier of cell.
3. the method as described in claim 1, further includes:
Serving BS sends the flexible bandwidth configuration information of target BS to terminal, so that terminal is according to the flexible band of target BS Wide configuration information determines the measurement range of extension carrier wave, or so that terminal is according to the spirit of present operating frequency and target BS Band width configuration information living determines the detection position of synchronization signal.
4. the method as described in claim 1, the flexible bandwidth configuration information that the serving BS obtains target BS include:
Serving BS obtains the flexible of target BS by X2 interface message or S1 interface message or network management configuration message Band width configuration information.
5. the method as described in claim 1, further includes:
Serving BS obtains the measurement result for the Target cell that terminal reports, and includes every in the measurement result of the Target cell The identification information of carrier type corresponding to a measurement result, carrier type therein include main carrier and extension carrier wave；
Serving BS judges whether terminal meets switching condition, if terminal meets switching condition, to target belonging to Target cell Base station sends switching request, the measurement result and terminal capability of the Target cell is carried in the switching request, so as to target Base station in response in the switching request, according to the measurement result of the Target cell, the bandwidth ability of the target BS and Terminal capability determines that terminal needs the carrier type that accesses, and returns to handoff response to serving BS, takes in the handoff response Tape terminal needs the identification information of the carrier type of access carrier, and if identification information indicates that terminal needs to access extension and carries Wave then also carries the flexible bandwidth configuration information of the target BS, wherein the band of the target BS in the handoff response Wide ability refers to whether target BS is configured with flexible carrier wave；
The handoff response that serving BS is returned in response to target BS, sends switching command to terminal, with instruction terminal into Row switching, the switching command carried terminal need the identification information of the carrier type of access carrier, and if identification information It indicates that terminal needs to access extension carrier wave, then also carries the flexible bandwidth of the target BS in the switching command with confidence Breath, so that terminal is switched on the corresponding carrier wave of Target cell according to the switching command.
6. method as claimed in claim 5, wherein the serving BS judges whether terminal meets switching condition and include:
The handoff threshold of serving BS carrier type according to corresponding to measurement result and each measurement result judges whether Meet switching condition, wherein different carrier types is configured with different handoff thresholds.
7. a kind of cell measuring method for flexible bandwidth, comprising:
Terminal receives the neighbor measurement information that serving BS is sent, and the neighbor measurement information includes the measurement carrier wave of Target cell Information and the cell information for supporting extension carrier wave, wherein the measurement carrier information refers to the need that serving BS is indicated to terminal The carrier type to be measured, the carrier type include at least one of main carrier and extension carrier wave；
Terminal determines the carrier type for needing to measure to Target cell according to the neighbor measurement information, and measures.
8. the method for claim 7, the terminal needs to survey according to neighbor measurement information determination to Target cell The carrier type of amount includes:
If the measurement carrier information of the Target cell indicates measurement main carrier, it is determined that carried out to the main carrier of Target cell Measurement；Or
If the measurement carrier information of the Target cell indicates measurement extension carrier wave, and the cell for supporting extension carrier wave There is no Target cell in information, it is determined that do not measure to Target cell；Or
If the measurement carrier information of the Target cell indicates measurement extension carrier wave, and the cell for supporting extension carrier wave There is Target cell in information, it is determined that measure to the extension carrier wave of Target cell；Or
If the measurement carrier information of the Target cell indicates measurement main carrier and extension carrier wave, and support extension carries There is Target cell in the cell information of wave, it is determined that main carrier and extension carrier wave to Target cell measure；Or
If the measurement carrier information of the Target cell indicates measurement main carrier and extension carrier wave, and support extension carries There is no Target cell in the cell information of wave, it is determined that measure to the main carrier of Target cell.
9. the method for claim 7, further includes:
Terminal receives the flexible bandwidth configuration information for the target BS that serving BS is sent；
Terminal determines the measurement range of extension carrier wave according to the flexible bandwidth configuration information of target BS.
10. the method for claim 7, further includes:
Terminal receives the flexible bandwidth configuration information for the target BS that serving BS is sent；
Terminal determines the detection position of synchronization signal according to the flexible bandwidth configuration information of present operating frequency and target BS.
11. the method for claim 7, further includes:
Terminal, to the measurement result of Target cell, includes each in the measurement result of the Target cell to serving base stations report Measurement result corresponds to the identification information of carrier type, and carrier type therein includes main carrier and extension carrier wave, to service base It stands and sends switching request to target BS belonging to Target cell when terminal meets switching condition, carried in the switching request The measurement result and terminal capability of the Target cell, so that target BS is in response to the switching request, according to the target The measurement result of cell, the bandwidth ability of the target BS and terminal capability determine the carrier type that terminal needs to access, Wherein, the bandwidth ability of the target BS refers to whether target BS is configured with flexible carrier wave；
The switching command that terminal is sent in response to serving BS is linked into the corresponding carrier wave of Target cell according to the switching command On, the switching command carried terminal needs the identification information of the carrier type of access carrier, and if identification information indicates Terminal needs to access extension carrier wave, then the flexible bandwidth configuration information of the target BS is also carried in the switching command.
12. a kind of base station, the base station is the current serving BS of terminal, and the base station includes:
Flexible bandwidth information acquisition unit, for obtaining the flexible bandwidth configuration information of target BS；
Neighbor measurement information determination unit determines the measurement of Target cell for the flexible bandwidth configuration information according to target BS Carrier information and the cell information for supporting extension carrier wave, neighbor measurement information includes measurement carrier information and the support of Target cell Extend the cell information of carrier wave, wherein the measurement carrier information refers to the load that the needs that serving BS is indicated to terminal measure Wave type, the carrier type include at least one of main carrier and extension carrier wave；
Neighbor measurement information transmission unit, for sending neighbor measurement information to terminal, so that terminal is according to the nearby region measurement Information determines the carrier type for needing to measure to Target cell, and measures.
13. base station as claimed in claim 12, wherein the neighbor measurement information determination unit is in the survey for determining Target cell When measuring carrier information, it is specifically used for:
If target BS is configured with extension carrier wave, the measurement carrier information of Target cell is configured to the main load of measurement Target cell Wave and extension carrier wave, if target BS does not configure extension carrier wave, the measurement carrier information of Target cell is configured to measurement mesh Mark the main carrier of cell.
14. base station as claimed in claim 12, further includes:
Flexible bandwidth information transmitting unit, for sending the flexible bandwidth configuration information of target BS to terminal, so as to terminal root Determine the measurement range of extension carrier wave, or according to the flexible bandwidth configuration information of target BS so that terminal is according to work at present frequency The flexible bandwidth configuration information of rate and target BS determines the detection position of synchronization signal.
15. base station as claimed in claim 12, the flexible bandwidth information acquisition unit, for by X2 interface message or Person S1 interface message or network management configuration message obtain the flexible bandwidth configuration information of target BS.
16. base station as claimed in claim 12, further includes:
Measurement result acquiring unit, for obtaining the measurement result for the Target cell that terminal reports, in the survey of the Target cell The identification information including carrier type corresponding to each measurement result in result is measured, carrier type therein includes main carrier and expansion Open up carrier wave；
Switching treatmenting unit, for judging whether terminal meets switching condition, if terminal meets switching condition, to Target cell institute The target BS of category sends switching request, and the measurement result and terminal capability of the Target cell are carried in the switching request, So that target BS is in response to the switching request, according to the measurement result of the Target cell, the bandwidth of the target BS Ability and terminal capability determine the carrier wave that terminal needs to access, and return to handoff response, carried terminal in the handoff response The identification information of the carrier type of access carrier is needed, and if identification information indicates that terminal needs to access extension carrier wave, The flexible bandwidth configuration information of the target BS is also carried in the handoff response, wherein the bandwidth energy of the target BS Power refers to whether target BS is configured with flexible carrier wave；
Switching command unit, the handoff response for returning in response to target BS send switching command to terminal, to refer to Showing that terminal switches over, the switching command carried terminal needs the identification information of the carrier type of access carrier, and if Identification information indicates that terminal needs to access extension carrier wave, then the flexible bandwidth of the target BS is also carried in the switching command Configuration information, so that terminal is switched on the corresponding carrier wave of Target cell according to the switching command.
17. base station as claimed in claim 16, the switching treatmenting unit is when judging whether terminal meets switching condition, tool Body judges whether to meet switching item for the handoff threshold of the carrier type according to corresponding to measurement result and each measurement result Part, wherein different carrier types is configured with different handoff thresholds.
18. a kind of terminal, comprising:
Neighbor measurement information acquiring unit, for receiving the neighbor measurement information of serving BS transmission, the neighbor measurement information The cell information of measurement carrier information and support extension carrier wave including Target cell, wherein the measurement carrier information refers to The carrier type that the needs that serving BS is indicated to terminal measure, the carrier type include main carrier and extend in carrier wave extremely Few one kind；
Carrier wave determination unit is measured, for determining the carrier-class for needing to measure to Target cell according to the neighbor measurement information Type.
19. terminal as claimed in claim 18, the measurement carrier wave determination unit, are used for:
If the measurement carrier information of the Target cell indicates measurement main carrier, it is determined that carried out to the main carrier of Target cell Measurement；Or
If the measurement carrier information of the Target cell indicates measurement extension carrier wave, and the cell for supporting extension carrier wave There is no Target cell in information, it is determined that do not measure to Target cell；Or
If the measurement carrier information of the Target cell indicates measurement extension carrier wave, and the cell for supporting extension carrier wave There is Target cell in information, it is determined that measure to the extension carrier wave of Target cell；Or
If the measurement carrier information of the Target cell indicates measurement main carrier and extension carrier wave, and support extension carries There is Target cell in the cell information of wave, it is determined that main carrier and extension carrier wave to Target cell measure；Or
If the measurement carrier information of the Target cell indicates measurement main carrier and extension carrier wave, and support extension carries There is no Target cell in the cell information of wave, it is determined that measure to the main carrier of Target cell.
20. terminal as claimed in claim 18, further includes: flexible bandwidth information acquisition unit and measurement range determination unit And/or synchronous signal detection unit；
The flexible bandwidth information acquisition unit matches confidence for receiving the flexible bandwidth of target BS of serving BS transmission Breath；
The measurement range determination unit, for determining the measurement of extension carrier wave according to the flexible bandwidth configuration information of target BS Range；
The synchronous signal detection unit, it is true for the flexible bandwidth configuration information according to present operating frequency and target BS Determine the detection position of synchronization signal.
21. terminal as claimed in claim 18, further includes:
Measurement result reporting unit, for the measurement result to serving base stations report to Target cell, in the Target cell It include the identification information that each measurement result corresponds to carrier type in measurement result, carrier type therein includes main carrier and expansion Carrier wave is opened up, so that serving BS sends switching request to target BS belonging to Target cell when terminal meets switching condition, The measurement result and terminal capability of the Target cell are carried in the switching request, so that target BS is in response to the switching Request, determines terminal need according to the measurement result of the Target cell, the bandwidth ability of the target BS and terminal capability The carrier type to be accessed, wherein the bandwidth ability of the target BS refers to whether target BS is configured with flexible carrier wave；
Switch unit, the switching command for sending in response to serving BS are linked into Target cell according to the switching command On corresponding carrier wave, the switching command carried terminal needs the identification information of the carrier type of access carrier, and if knows Other information indicates that terminal needs to access extension carrier wave, then the flexible bandwidth that the target BS is also carried in the switching command is matched Confidence breath is linked on the corresponding carrier wave of Target cell.
22. a kind of cell measurement system for flexible bandwidth, including the described in any item base stations claim 12-17 and power Benefit requires the described in any item terminals of 18-21.
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