CN105532051B - Secondary cell for carrier wave polymerization is synchronous - Google Patents

Abstract

Provide the carrier wave aggregated application method of the time synchronization of the acquisition and secondary cell for workable wireless communication device in a cellular communication network.This method includes, if the time reference of secondary cell is unknown for wireless communication device: by the preliminary time of secondary cell with reference to the time reference for the main plot for being equal to carrier wave aggregated application；Based on preliminary time with reference to the detection based on synchronization signal for executing the time reference of secondary cell with one or more synchronization signal for transmitting in secondary cell；Based on preliminary time with reference to the channel state measurement referred to based on preliminary time for executing secondary cell with one or more reference signal for transmitting in secondary cell；Based on the detection based on synchronization signal, the value that channel quality indicator is arranged is nominal value or the value based on the channel state measurement referred to based on preliminary time；And the channel status information reports including channel quality indicator are transferred to cellular communications networks.The arrangement for workable wireless communication device in a cellular communication network is also disclosed, is suitable for obtaining the time synchronization with secondary cell of carrier wave aggregated application.Also disclose the adjustment demodulator including the arrangement and the wireless communication device including the arrangement.

Description

Secondary cell for carrier wave polymerization is synchronous

Technical field

The present invention relates generally to carrier aggregation technology fields.More particularly it relates in carrier wave polymerization scene Secondary cell activation.

Background technique

Through this specification, it will use and be based on universal mobile telecommunications standard, (UMTS-LTE is also known as drilling long term evolution Into UMTS terrestrial radio access network network --- 3GPP is advocated E-UTRAN --- and by third generation cooperative partner program --- Lead) notation and example.It should be noted, however, that this be not meant to imply that it is restricted.On the contrary, embodiment and application scenario can To be equally applicable in about other known or future communication standard.DL indicates downlink and UL indicates uplink.

Carrier wave polymerization

Carrier wave is aggregated in the version 10 of E-UTRAN standard and introduces, can satisfy 4G's for E-UTRAN 1000Mbit/s requirement.Another purpose of carrier wave polymerization is to allow to have small (being, for example, less than 20MHz) and discrete frequency The operator of distribution is composed by the way that discrete distribution is aggregated to such as 10MHz, 20MHz or more user's body to provide It tests.

In typical carrier wave polymerization example, user equipment (UE) is connected to serving cell, is referred to as main plot (PCell), which uses the carrier wave of referred to as principal component carrier wave (PCC).Mobility is satisfied in principal component carrier wave.If The service of UE requirement high-throughput, network can activate one or more Additional Services cell, each is referred to as auxiliary Cell (SCell) uses the corresponding carrier wave of referred to as auxiliary component carrier (SCC).Secondary cell activation can be in SCell by UE Occur before or after detecting.For example, the SCell activation before SCell detection can be based on network about UE Set the knowledge of (positioning).For example, network is known that UE is located in the overlay area of potential SCell.For SCell activation The example of such method discloses in WO/2012/154112.

Consider that the two kinds of carrier wave for version 10 polymerize situation:

With interior continuous polymerization.

Interband polymerization.

In version 11, an addition type is considered:

With interior discontinuous polymerization.

In with interior continuous polymerization, PCell and SCell are continuous in frequency.Standard requirements are (for interior continuous poly- Closing) (3GPP TS 36.104 is revised time between PCell and SCell (or equally, timing) difference at most ± 130ns Version 11.4.0, subdirectory 6.5.3).It is further assumed that in a standard, for this particular condition (with interior continuous polymerization), can make The received signal from PCell and SCell is demodulated simultaneously with a Fast Fourier Transform (FFT) (FFT).Therefore, in practice, It usually requires that PCell and SCell co-located, that is, from identical (geographically) station transmission because otherwise in PCell and The official post of propagation delay between SCell obtains it and would be impossible to using a FFT.

For with interior discontinuous polymerization, timing difference allows maximum ± 260ns, and do not make about cell coordination positioning or Person should may use the hypothesis of a FFT about it.

For interband carrier aggregation, the timing difference between PCell and SCell allows ± 1.3 μ s of maximum.For this feelings Shape, it is also supposed that cell can not co-located and UE should can deal with ± 30 μ s of maximum between PCell and SCell Propagation delay it is poor, result in ± 31.3 μ s maximum delay extension (36.300 revised edition of 3GPP TS, 11.5 attachment J).

The example of the cloth situation of prediction is shown in Figure 1 (referring also to 36.300 revised edition 11.5.0 attachment of 3GPP TS J).Solid line shows the PCell on carrier frequency F1 and dotted line shows the SCell on carrier frequency F2.

The part (a) of attached drawing 1 show the overlapping of co-located band in situation, have all overlapping PCell and The situation of the overlapping range of SCell.Three base station locations 101a, 102a, 103a are shown, each provides three PCsell (121::1a, 121:2a, 121:3a are shown as place 101a) and three SCell (131 are shown as place 101a: 1a, 131:2a, 131:3a).Since the different carrier frequencies of PCell and SCell are in identical frequency band, in PCell Be with the path loss being accordingly subjected in SCell it is similar also, therefore, PCell is similar with the overlay area of SCell.

The part (b) of attached drawing 1 shows the situation of the interband of the overlapping of co-located.Show three base station locations 101b, 102b, 103b, each provides three PCsell (being shown as 121:1b, 121:2b, 121:3b for place 101b) And three SCell (131:1b, 131:2b, 131:3b are shown as place 101b).Due to the difference of PCell and SCell Carrier frequency not in identical frequency band, the difference between the corresponding path loss being subjected in PCell and SCell is big Also, therefore, the overlay area of PCell and SCell is different.

The part (c) of attached drawing 1 shows the situation of the partly overlapping interband of co-located.Show three base station locations 101c, 102c, 103c, each provides three PCsell (being shown as 121:1c, 121:2c, 121:3c for place 101c) And three SCell (131:1c, 131:2c, 131:3c are shown as place 101c).The overlay area of PCell and SCell It is different.

The part (d) of attached drawing 1 shows the situation of the not interband of co-located.Show three base station location 101d, 102d, 103d, each provides three PCsell (being shown as 121:1d, 121:2d, 121:3d for place 101d).This Outside, there is long distance wireless dateline (for example, 111:1d, 111:2d), each of which provides PCell and (111:1d is shown as 131:1d, and 131:3d is shown as 111:2d) to provide improved handling capacity in hot zones.PCell and The overlay area of SCell is different.

The part (e) of attached drawing 1 shows the situation with transponder of the interband of the overlapping of co-located.Similar to part (b), three base station locations 101e, 102e, 103e are shown, each provides three PCsell and (place 101c is shown For 121:1c, 121:2c, 121:3c) and three SCell (being shown as 131:1c, 131:2c, 131:3c for place 101c), Wherein the overlay area of PCell and SCell is not identical.In addition, having transponder (such as 111:2d), each is provided PCell (being shown as 141:2d for 111:2d) is to provide improved handling capacity in hot zones.

(Fig. 1, part are shown in for the situation in for the co-located that the coverage area of PCell and SCell is all overlapped (a)), the measurement for independent PCell based on report, when needed, eNB (enhancing NodeB) can configure and swash SCell living.

More generally, if UE has been measured and reported cell (accurate time frame, that is, in standardization effort recently In discussion under, nearest definition is current (2013)) carried as intra-frequency neighbor cells or as the auxiliary component in configuration Cell on wave (F2), then be known in advance the timing of SCell.Interband continuous carrier is polymerize, i.e., wherein PCell and SCell Frequency spectrum be continuous (back-to-back), the timing of SCell, which is also considered to be, to be known in advance, and has been reported recently in spite of it It accuses.In any of these cases, when UE obtain for SCell activation instruction after, UE can start from SCell receive and The fine tuning of timing is not first carried out.

If the cell corresponding to SCell is most reported not yet and it takes (with interior polymerization situation) at another Or interband is non-adjacent, the timing of SCell is ignorant for UE.But as set forth above, it is possible to know its relative to PCell should fall into ± 31.3 μ s (almost OFDM- Orthodoxy Frequency Division Multiplex-symbol half).In this case, It can start before being received in SCell in UE, the timing of SCell must be adjusted.

Become known for the synchronous multiple technologies of SCell.For example, WO2013/025547A2 discloses some situations, wherein PCell timing may be used as the initial time synchronization for SCell.

Cell detection and measurement

Connection mode mobility in E-UTRA is supported by measurement, and the measurement is performed and is reported by UE To network.When deciding whether to transfer UE to another eNB, Web vector graphic measurement report is other.Network can generally also make For other purposes with measurement report, such as the network optimization and plot planning.

The detection (such as cell searching) and intensity estimation signal (example of neighboring community are generally included by the measurement that UE is executed Such as Reference Signal Received Power-RSRP- and/or Reference Signal Received Quality-RSRQ).36.133 revised edition of 3GPP TS 11.4.0 the requirement regulation UE in subdirectory 8 should be able to detect intra-frequency neighbor cells, these cell picturesOne Sample faint (frequency-region signal and interference-to-noise ratio-SINR) and network is reported them in given time.Carrier wave is polymerize, PCC and SCC is considered as carrier wave between frequency and corresponding cell is considered as neighboring community between frequency, accordingly should It is detected and reports.

Cell searching in E-UTRA includes obtaining: frequency and sign synchronization, frame synchronization and physical cell identification. This in each cell with two signals of the basis 5ms (every 5ms repeat) transmission by being promoted: primary synchronization signal (P- SSIG or PSS) and secondary synchronization signal (S-SSIG or SSS).In 36.211 revised edition 11.2.0 subdirectory of 3GPP TS These signals are described in 6.11, and are shown in the attached drawing 2 for LTE FDD (frequency division multiplexing) radio frames.72, center Further details around subcarrier, which are highlighted, to be neutralized in the attached drawing 3 for LTE FDD (frequency division multiplexing) for LTE TDD In the attached drawing 4 of (time division multiplexing).Diagram in attached drawing 2,3 and 4 is schematical and does not therefore imply that for items The accurate size and correctness of size each other.

Attached drawing 2 shows the example of the T/F planning of LTE FDD radio frames.Time (son point is shown in trunnion axis It is segmented into the subframe 0,1,2 such as by 150, shown in 151,152,153 ..., frequency 9) is shown on the vertical axis.Black square is shown always Be the cell special reference signal (CRS) occurred and white square shown with when the cell special reference signal (CRS) that occurs.Intermediate 72 subcarriers are shown by 154, and for clarity, part of it is enhanced 158.The transmission of SSS, In are shown 155 156 show the transmission of PSS, and show the transmission of Physical Broadcast Channel (PBCH) 157.

Attached drawing 3 shows in FDD cell the example sync signal transmitted (compared with attached drawing 2) and reference symbol.Only Intermediate 72 subcarriers are shown.The time is shown in trunnion axis, and (son is divided into the subframe such as by 160, shown in 161,162,163 0,1,2 ..., 9) frequency is shown on the vertical axis (son is divided into such as by 164, resource block 0 shown in 165 ..., 5).Black square Show for CRS that (DLTX0, antenna port 0) from base station of downlink transmission always occurs and white square shown with when go out The existing CRS for DLTX0.As shown SSS in same position in fig 2 with PSS transmission (accordingly in auxiliary synchronous letter It is transmitted on road-S-SCH and primary synchronization channel-P-SCH).Some subframes (shown in 166 and 167) can be used for for example MBSFN (Multicast Broadcast Single Frequency Network).Therefore, they may not include the proprietary reference symbol of cell.

Attached drawing 4 shows the example of the synchronization signal and reference symbol transmitted in TDD cell.Only 72 intermediate pairs Carrier wave is shown.Shown in trunnion axis the time (son be divided into subframe 0,1,2 such as by 170, shown in 171,172,173 ..., 9) showing frequency on the vertical axis, (son is divided into resource block 0 such as by 174, shown in 175 ..., 5).Black square show for The CRS of DLTX0 always occurred and white square shows the CRS occurred sometimes for DLTX0.Also show SSS and PSS transmission (accordingly being transmitted on auxiliary synchronization channel-S-SCH178 and primary synchronization channel-P-SCH179).It may be noted that synchronizing channel Position is somewhat different than the case where FDD.Some subframes (shown in 176 and 177) be used for such as boot cycle (GP) purpose, Uplink (UL) or MBSFN.Therefore, they may not include the proprietary reference symbol of cell.

As described in a standard, P-SSIG is present in three versions that (one for coming from cell identity in three groups Each), be based on Zadoff-Chu sequence, the sequence is mapped to intermediate 62 resource units (RE) (according to typical Method, in 72 center RE only 62 can be used and 5 RE closest to boundary are arranged on zero).Have 168 cell groups in total, and the information for belonging to which cell group about cell is carried by S-SSIG, it is based on m- sequence. Cell group and P-SSIG version generate physical cell identification together, wherein having 3 × 168=504.S-SSIG is also carried about being The information of the no particular example that S-SSIG is transmitted in subframe 0 or subframe 5, be used to obtain frame timing (frame synchronization).This Outside, S-SSIG is scaled by cell identity in the group with specific cell.Therefore, having sum is 2 × 3 × 168=2 × 504 version Originally, there are two all having for each of 504 physical cell identifications.Center is mapped to similar to P-SSIG, S-SSIG On 62 RE.

As known in the art, the detection of cell (can be based on three P- based on the received sample at least 5ms SSIG version) matched filtering.Correlation peak in the output of matched filter is typically exhibited from one or more The synchronization signal of cell.This step is known as sign synchronization.It has built up sign synchronization and identifies in group after the identity of cell, Before S-SSIG detection usually executes generation frame timing (frame synchronization), physical cell identification (being determined by cell group identity) and circulation Sew (CP) configuration.

The requirement of SCell activation

For SCell activation maximum acceptable delay (waiting time) (from activation instruction is received until efficient channel Status information (CSI) is transferred to network) typical case requirement may include that, for SINR > -3dB, activation should be complete Cheng

- 24ms, if cell is known (is normally defined for example within the last one period, length is equal to It is the smallest in 5 DRX circulations are recycled with 5 SCell measurements, it is reported to the RSRP measurement of network), and

- 34ms, if cell be it is unknown, commonly referred to as it is blind activation (be normally defined for example not within the above-mentioned period The RSRP measurement reported).

According to the standard, after SCell activation instruction 8ms has been received, UE will start to transmit CSI.But with Before the synchronization of SCell has been completed, CSI should indication overflow (channel quality indicator, CQI=0).

It is illustrative to require usually for the scheme of the worst case scenarios of the usable quantity about unicast sub-frame It is satisfied.For LTE FDD, worst case scenarios are when every 5ms has 2 unicast sub-frames.For LTE TDD, worst feelings Condition situation is when every 5ms only has a unicast sub-frame and a special subframe.

If it is known that, conventionally, cell detecting method (such as method disclosed in WO2013/025547A2) has used, Meet typical blind SCell activation to require to can be challenge.Therefore, it is necessary to method and arrangements, as requested can Realize CSI report.For example, it is desired to which method and arrangement, can satisfy during the SCell activation in carrier wave polymerization situation The latency requirement of CSI report.

Summary of the invention

It should be emphasized that term " includes " when used in this manual, be used to illustrate there are specific feature, Whole, step perhaps component but do not exclude the presence of or add one or more other feature, entirety, step, component Or their group.

The purpose of some embodiments is at least some disadvantages mentioned above of elimination and providing method and arrangement for realizing carrying Wave polymerize the time synchronization in situation with secondary cell.Preferably, the method and arrangement provided thus can be realized CSI as required Report.

According in a first aspect, providing for realizing for the wireless communication device that can be used in a cellular communication network With the carrier wave aggregated application method of the time synchronization of secondary cell.If the time reference of secondary cell is for wireless communication device Know, this method comprises:

The preliminary time that secondary cell is arranged is referenced as the time reference for the main plot being equal in carrier wave aggregated application；

The detection based on synchronization signal for executing the time reference of secondary cell, based on preliminary time reference and auxiliary small One or more synchronization signal transmitted in area；

The channel state measurement based on preliminary time reference for executing secondary cell, based on preliminary time reference and auxiliary One or more reference signal transmitted in cell is come；

Based on the detection based on synchronization signal, the value that channel quality indicator is arranged is nominal value or is based on based on just Walk the value of the channel state measurement of time reference；And

Transmission includes the channel status information reports of channel quality indicator to cellular communications networks.

The nominal value can be for example equal to zero.Channel quality indicator is transferred to cellular communications networks can be for example including Channel quality indicator is transferred to main plot.Reference signal can indicate channel state measurement reference signal.

The execution for the step of executing the channel state measurement based on preliminary time reference of secondary cell may be auxiliary small with execution The step of detection based on synchronization signal of the time reference in area, executes overlapping.Therefore, secondary cell based on preliminary time join The channel state measurement examined usually can activate secondary cell and be shortened average time based on the time reference of main plot, because Obtain it is synchronous with secondary cell before acceptable channel quality indicator values may be implemented.

In some embodiments, based on one or more synchronization signal preliminary time reference and transmitted in secondary cell It is passed in secondary cell to execute the detection based on synchronization signal of the time reference of secondary cell with the sum referred to based on preliminary time One or more defeated reference signal come execute secondary cell based on preliminary time reference channel state measurement, can be by simultaneously It executes capablely.

According to some embodiments, if the value that channel quality indicator is arranged may include that the detection based on synchronization signal refers to Show and do not detect secondary cell, then sets nominal value for channel quality indicator values.

According to some embodiments, the value that channel quality indicator is arranged can also include, if the inspection based on synchronization signal It surveys instruction and detects secondary cell, then: determining and referred between the time reference of the detection based on synchronization signal in preliminary time Based on synchronization signal time deviation, and if the absolute value of the time deviation based on synchronization signal is greater than based on synchronization signal Time deviation threshold value then adjusts the time reference of secondary cell based on the time deviation based on synchronization signal and refers to channel quality Show that identifier value is set as nominal value.

If the absolute value of the time deviation based on synchronization signal is less than the time deviation threshold value based on synchronization signal, the party Method can (in some embodiments) further include: the time reference based on the time deviation adjustment secondary cell based on synchronization signal, And the value based on the channel state measurement referred to based on initial time is set by channel quality indicator values.

According to some embodiments, this method can also include one for being referred to based on preliminary time and being transmitted in secondary cell Or multiple universal reference signals execute the detection based on universal reference signal of the time reference of secondary cell, and letter is arranged Road quality indicator value is nominal value or the value based on the channel state measurement referred to based on preliminary time, can also be based on base In the detection of universal reference signal.Universal reference signal can indicate time reference detection reference signal and can be with channel shape State measuring reference signals are same or different.

If the absolute value of the time deviation based on synchronization signal is less than the time deviation threshold value based on synchronization signal, the party Method can (in some embodiments) further include: based on the time referred in preliminary time with the detection based on universal reference signal Time deviation with reference between determines universal reference signal, and if the time deviation based on universal reference signal it is absolute Value is greater than the time deviation threshold value based on universal reference signal, then auxiliary based on being adjusted based on the time deviation of universal reference signal The time reference of cell and nominal value is set by channel quality indicator values.

According to some embodiments, if the absolute value of the time deviation based on universal reference signal, which is less than, is based on generalized reference The time deviation threshold value of signal, this method may include based on based on universal reference signal time deviation adjustment secondary cell when Between refer to and set the value based on the channel state measurement referred to based on preliminary time for the value of channel quality indicator.

For include the detection based on universal reference signal embodiment alternatively or additionally, if based on synchronous letter Number time deviation absolute value be less than the time deviation threshold value based on synchronization signal and be greater than the time based on synchronization signal Deviation acceptance threshold, this method can include being based on referring in preliminary time and believing based on generalized reference (in some embodiments) Number detection time reference between time deviation determine universal reference signal, and if based on universal reference signal when Between partially absolute value of the difference be greater than the time deviation threshold value based on universal reference signal, then based on the time based on universal reference signal Deviation adjusts the time reference of secondary cell and sets nominal value for the value of channel quality indicator.If based on synchronous letter Number time deviation absolute value be less than the time deviation threshold value based on synchronization signal and be less than the time based on synchronization signal Deviation acceptance threshold, this method can include based on the time deviation based on synchronization signal or being based on (in some embodiments) The time deviation of universal reference signal adjusts the time reference of secondary cell and sets channel quality indicator values to based on base In the value of the channel state measurement of preliminary time reference.

According to some embodiments, based on one or more generalized reference preliminary time reference and transmitted in secondary cell Signal executes the detection based on universal reference signal of the time reference of secondary cell, with based on based on preliminary time with reference to and One or more synchronization signal transmitted in secondary cell executes the detection based on synchronization signal of the time reference of secondary cell, It can be executed in parallel.

In some embodiments, this method can further include, if the time reference of secondary cell is for wireless communication device Be it is known, then:

It is executed based on known time reference and one or more reference signal transmitted in secondary cell based on Know the channel state measurement of the secondary cell of time reference；

Nominal value is set by channel quality indicator values or is surveyed based on the channel status based on known time reference The value of amount；And

Channel status information reports including channel quality indicator are transferred to cellular communications networks.

In some embodiments, this method can further include that secondary cell activation request is initially received from main plot.

In some embodiments, the value that channel quality indicator is arranged can further include, if the inspection based on synchronization signal It surveys instruction and detects secondary cell, then:

Determine based on preliminary time with reference between the time reference of the detection based on synchronization signal based on synchronous The time deviation of signal；

Determine based on preliminary time with reference between the time reference of the detection based on universal reference signal based on The time deviation of universal reference signal；

Determine the difference between the time deviation based on synchronization signal and the time deviation based on universal reference signal；

If the absolute value of the difference is less than poor threshold value, based on the time deviation based on synchronization signal and based on general At least one of time deviation of reference signal adjusts the time reference of secondary cell, and by the value of channel quality indicator It is set as the value based on the channel state measurement referred to based on preliminary time；And

If the absolute value of the difference is greater than poor threshold value, nominal value is set by channel quality indicator values.

According to some embodiments, the detection based on synchronization signal for executing the time reference of secondary cell may include based on two Orthogonal frequency division multiplexing-OFDM- the symbol of a or multiple synchronization signals creates power delay profile.

The corresponding carrier frequency of secondary cell of advocating peace may be, for example, discontinuous and (i.e. in-band carrier is poly- positioned at same frequency band Close), or positioned at different frequency bands (i.e. interband carrier aggregation).When the respective carrier frequency for secondary cell of advocating peace be it is continuous and When positioned at identical frequency band (i.e. intralband carrier aggregation), the method for some embodiments can also be used.In the latter case, It usually assumes that the time reference of second cell known to wireless communication device.

According to some embodiments, wireless communication device and cellular communications networks can submit to universal mobile telecommunications standard, Long term evolution-UMTS-LTE.In such embodiments, one or more synchronization signal may, for example, be primary synchronization signal (P- ) and/or secondary synchronization signal (S-SSIG) SSIG.Reference signal can be for example including reference symbol, such as generic reference symbol.

In some embodiments, based on one or more synchronization signal preliminary time reference and transmitted in secondary cell Execute secondary cell time reference may include: based on the detection of synchronization signal

Fast Fourier is executed based on one or more synchronization signal that preliminary time reference pair is transmitted in secondary cell Transformation is to generate transformation signal；

Extract the relevant portion of the signal of transformation；

To the part additional zero value signal element extracted to generate zero padding transformation signal section；

Inverse fast Fourier transform is executed to generate the signal of reconstruction to zero padding transformation signal section；

One or more quick Fu is executed to the signal of reconstruction based on one or more corresponding alternative time reference In leaf transformation to the signal for generating one or more corresponding transformation it is alternative；

It is alternatively distributed based on the signal of reconstruction and the signal of one or more transformation to create power delay；And

The time reference of power delay distribution detection secondary cell based on creation.

Second aspect is the computer program product for including computer-readable media, and the computer-readable media has thereon There is the computer program including computer program instructions, which is loaded in data processing unit and when by counting When running the computer program according to processing unit, it is adapted so that data processing unit is executed and is walked according to the method for first aspect Suddenly.

The third aspect is the arrangement of the wireless communication device for using in a cellular communication network, be suitable for obtain with The time synchronization of secondary cell in carrier wave aggregated application.The arrangement includes transmitter, receiver and signal processor circuit.

Receiver is suitable for receiving one or more synchronization signal transmitted in secondary cell and pass in secondary cell One or more defeated reference signal.

The signal processor circuit is suitable for, if the time reference of secondary cell be for wireless communication device it is unknown, Then:

By the preliminary time of secondary cell with reference to the time reference for the main plot for being equal to carrier wave aggregated application；

Based on preliminary time with reference to executing secondary cell with one or more synchronization signal for transmitting in secondary cell The detection based on synchronization signal of time reference；

Based on preliminary time with reference to executing secondary cell with one or more reference signal for transmitting in secondary cell Channel state measurement based on preliminary time reference；

Based on the detection based on synchronization signal, the value that channel quality indicator is arranged is nominal value or is based on based on just Walk the value of the channel state measurement of time reference.

Transmitter is suitable for the channel status information reports including channel quality indicator being transferred to cellular communications networks.

Fourth aspect be include third face arrangement modem.5th aspect be include the third aspect arrangement or The wireless communication device of the modem of person's fourth aspect.The wireless communication device and/or fourth aspect of 5th aspect Modem can obey universal mobile telecommunications standard, long term evolution-UMTS-LTE.

In some embodiments, can additionally have in terms of third, the 4th and the 5th be equal to or correspond to such as The feature of first aspect any various features described above.For example, the signal processor circuit of the third aspect can also be suitble to In one or more method and step for executing first aspect.

It should be noted that disclosed above two movements to be executed corresponding to when measurement is more than or less than threshold value, At this point, the case where when measurement is equal to threshold value, can then be included in any one of two situations, such as upcoming It is applicatory in situation.

In addition, it should also be noted that when movement, determining or similar having been disclosed above as based on signal, degree This means that including any known or future realization (for example, given herein show when amount, parameter are perhaps similar Example).For example, based on determining time deviation adjustment time with reference to may include-according to the sign-of determining time deviation To/or increase or subtract the absolute value of determining time deviation from time reference.

The movement, which is executed in parallel, to mean to include the case where (or at least while to open when movement is performed simultaneously Begin).

One advantage of some embodiments is that some methods shown allow SCell usually to be activated by relatively early, if compared Common cell searching is used.As soon as having had been prepared for CSI report this is because, UE is synchronous with SCell and (being based on PCell timing) and prepare to start to receive.In the system of the prior art, only after UE is synchronous with SCell, UE is answered This must measure and prepare CSI report (based on PCell timing), this increases the waiting time activated to SCell.

Therefore, it is reported for meeting the CSI during the SCell activation (especially for blind activation) in carrier wave polymerization situation The latency requirement of announcement, a possibility that providing increase.Method in accordance with some embodiments allows in third generation affiliate Current requirement in project (3GPP) standard criterion is satisfied (such as test case cold start-up 1, starting wherein existing parameters knowledge It can be limited, (have in channelling mode ETU-70 (the extension typical urban for having maximum Doppler offset 70Hz) and EPA-5 The extension pedestrian A of maximum Doppler offset 5Hz)) in.Even if standard requirements will be relaxed, operator (and user) still will It can be benefited from quick activation.

Another advantage of some embodiments be same or similar method can be used for all kinds SCell swash It is living, there is no need between different situations difference (such as interband, with it is interior continuous and with interior discontinuous situation) and/or according to applying feelings Shape is related to various process.This simplifies realize and safeguard.

The another advantage of some embodiments still having is to be related to example (the example SS-PDP life of OFDM symbol " interpolation " At extra demand, such as faster FFT hardware accelerator can be not necessarily to by seeing such as attached drawing 9 and 10) to realize.

Detailed description of the invention

By reference to attached drawing, from the detailed description of following embodiment, further objects, features and advantages will be aobvious and easy See, in which:

Fig. 1 is to show the schematic diagram of illustrative carrier polymerization deployment situation；

Fig. 2 is to show the schematic diagram of the example T/F planning of LTE FDD radio frames；

Fig. 3 is to show the schematic diagram of the example sync signal transmitted and reference symbol in LTE FDD cell；

Fig. 4 is to show the schematic diagram of the example sync signal transmitted in LTE TDD cell and reference symbol；

Fig. 5 is to show the flow chart of the exemplary method of SCell activation in accordance with some embodiments；

Fig. 6 is to show the schematic diagram of the example worst case scenarios of blind activation in fdd；

Fig. 7 is to show the schematic diagram of the example worst case scenarios of the blind activation in TDD；

Fig. 8 is that the use shown only according to some embodiments is swashed based on the SCell of the example timing adjustment of SS-PDP The flow chart of exemplary method living；

Fig. 9 is to show the schematic diagram of example LTE FDD signal arrangement in accordance with some embodiments；

Figure 10 is to show the exemplary method in accordance with some embodiments for being used to realize SS PDP based on FDD character position Flow chart；

Figure 11 is according to the block diagrams of some exemplary Example receivers (illustrate only a Rx branch)；

Figure 12 is the flow chart for showing exemplary method step in accordance with some embodiments；

Figure 13 is the schematic diagram of computer-readable media in accordance with some embodiments；And

Figure 14 is to show the exemplary block diagram of arrangement in accordance with some embodiments.

Specific embodiment

Some embodiments are described below.It is illustrative example and restricted by no means that these embodiments, which are merely intended to, 's.

As will be explained below (for example, in conjunction with attached drawing 12), some embodiments are related to polymerizeing the side of situation for carrier wave Method, wherein purpose is to realize the Fast synchronization of user equipment (UE) and unknown SCell, and send in desired activationary time CSI report out.According to some in these embodiment, multiple activation can be dispatched simultaneously (for example, two or more are synchronized To cell, channel estimation and for the measurement of CSI report).To which one realizes adequately synchronous, effective CSI report (base In the measurement being performed simultaneously) just directly it is sent in network from UE, thus UE can quickly be scheduled on SCell.

It is synchronous with unknown SCell to be based on PCell timing substitution SCell periodically according to some embodiments, and with It afterwards using estimator detection residual timing (± 31.3 μ s as discussed above), is realized in UE, there is ± 1/2 OFDM symbol The capture range of number (± 33.3 μ s).It may indicate whether to have been carried out synchronization by the quality factor that estimator generates.

Other than above-mentioned estimator, another estimator can also be used.This can provide estimating for more pinpoint accuracy It calculates and there are smaller capture range (such as ± 5.5 μ s) simultaneously.The accuracy of other estimators changes as bandwidth increases It is kind.Similar to above-mentioned estimator, the quality factor that other estimators generate may indicate whether to have been carried out synchronization.

Some embodiments use the following principle of the operation of UE based on the result of estimator:

If residual timing small (such as less than threshold value) that is synchronous and monitoring is had been carried out, including effective CQI value CSI report can be issued immediately.

If have been carried out residual timing that is synchronous and detecting it is big (for example, be greater than threshold value, can or can not It is overlapped with above-mentioned threshold value), the adjustment timing before effective CQI is calculated and (is typically based on new measurement) and is issued.At the same time CQI=0 (except range) is reported to network.

If not completing to synchronize, new trial is carried out in next suitable subframe.

In addition, some embodiments include how changing about and being inserted into synchronous signal information between OFDM symbol The specific detail of rate of the performance of kind estimator without increasing FFT hardware accelerator work.

It, can be usually using two or more with lower component and/or movement for synchronous with SCell:

Gain search

It is based on the residence time detector of synchronization signal (SS), such as above-mentioned rough estimator

It is based on the residence time detector of universal reference signal (CRS), such as above-mentioned fine estimator

- CSI measurement

The implementation example of they each is described below.

Gain search

Gain search is generally used for finding the initial gain grade for being used for automatic growth control (AGC), so that to have When limiting bit width indicates sample, received IQ sample can be by correct scaling to prevent information from losing.Gain search can be with Occupy almost all subframe.In general, it must execute to provide for Target cell in unicast sub-frame or their part Relevant information.It particularly, usually should not be during the multicast portions of MBSFN sub-frame or in LTE TDD UL subframe It is performed during frame.Gain search is mentioned herein for integrality.

Synchronization signal power delay distribution (SS-PDP)

Outline below based on synchronization signal residence time estimator operation example and the example can for example by As above-mentioned rough estimator.Residence time estimator based on synchronization signal can be configured as:

1, time-domain OFDM symbol is transformed to frequency domain.

2, extracted from from secondary cell received signal resource unit with for main or secondary synchronization signal (P-SSIG or S-SSIG)。

3, by obtaining the resource unit of extraction multiplied by previously known P-SSIG S-SSIG sequence complex conjugate Channel samples.

4, (optional) coherently accumulates the channel samples for being used for P-SSIG or S-SSIG.

5, channel samples are transformed to by time domain by inverse fast Fourier transform (IFFT).

6, (optional) the incoherently cumulative power delay distribution (PDP) in Rx diversity branch.

7, the OFDM symbol position from true OFDM symbol position to hypothesis is estimated by identifying the position of peak amplitude The time migration of (its character position for being initially based on main plot).

8, quality factor, such as peak value-average specific (PAR) of the peak value for detection are calculated.

The capture range of SS-PDP can be usually ± 1/2 OFDM symbol (± 33.3 μ s), meet current application. This is because synchronization signal resource unit is continuous in frequency.

But be delayed in power and be distributed the corresponding endpoint of (extreme), SS-PDP is accorded with based on only half target OFDM Number and half adjacent OFDM symbol (for corresponding endpoint previous or subsequent one).It is dry which results in intersymbols (ISI) is disturbed, which reduce overall signal interference and noise ratios (SINR), and result in the reduced property of time migration estimator Energy.

In addition, estimator is around (that is, except the capture range of estimator for the delay for being greater than ± 1/2 OFDM symbol It is true delay be mistakenly considered as the delay in capture range), cause instruction time migration and actual time Offset compares with opposite label (and possible different size).Since the character position of estimation is and true sign position It is not aligned seriously, surrounding may further result in intersymbol interference (ISI).In order to eliminate time migration label ambiguity, SS-PDP can be obtained for previous and subsequent OFDM symbol.In the extreme of capture range, previous or subsequent OFDM symbol Number SS-PDP can be confirmed estimation time migration label.Due to estimation become more noisy, circular risk with Low SINR and increase.In order to improve SINR and, therefore, the quality of estimation, for defining adjacent (previous and subsequent) The span of OFDM symbol can they partly overlapped target OFDM symbol span position at obtain.For example, if fixed Each span of adopted adjacent-symbol has been overlapped 50% target OFDM symbol, for two in these three OFDM symbol spans Result SS-PDP will not by be more than 25% ISI (it is occurred with ± 16.7 μ s).In order to further improve in PCell and The SINR of different timing offset between SCell, is able to use more hypothesis of the position of the span about adjacent OFDM symbol. The quality factor for different hypothesis generated from the estimator may be used to determine whether inclined from which SS-PDP extraction time It moves.In addition, quality factor may be used to determine whether estimation is reliable.

The resolution ratio of SS-PDP depends on the size of IFFT and quality depends on SINR.

Above-mentioned SS-PDP correspond to acquisition time-domain OFDM symbol (span based on selection) and synchronous signal sequence it Between cyclic convolution.It is alternatively possible to obtain power delay distribution via the linear correlation in time domain.Linear phase in time domain Pass is not influenced by ISI, but it has higher complexity compared with SS-PDP described herein.

In alternative estimator, linear phase component is directly estimated rather than searches for the peak value in PDP, for example, logical Calculating phase slope is crossed, such as passes through the average phase difference between Adjacent resource unit.

In alternative estimator furthermore, include more than one PDP value window in power calculated rather than Eye generally better obtains multipath transmisstion in the independent peak value in PDP.

In another the alternative estimator still having, a variety of detection methods can be combined (or multiple detection methods Can vie each other), to obtain a more steady estimation independently of propagation conditions.

Universal reference signal power delay distribution (CRS-PDP)

The example and the example that the residence time estimator operation based on universal reference signal will be outlined below can be with Such as it is used as above-mentioned fine estimator.Residence time estimator based on universal reference signal can be configured as:

1, time-domain OFDM symbol is converted into frequency domain.

2, extracted from from secondary cell received signal resource unit with for reference signal (RSIG) (such as from DL Tx Port 0, and if it does, the port DL Tx 1).

3, by the way that the resource unit of extraction is obtained channel samples multiplied by the complex conjugate of previously known RSIG sequence.

4, (optional) is for adjacent OFDM symbol coherently cumulative channel sample.

5, channel samples are converted into time domain using IFFT.

6, (optional) incoherently accumulates PDP for adjacent OFDM symbol.

7, (optional) incoherently accumulates PDP in Rx diversity branch.

8, it is estimated by using the position that IFFT converts channel samples and identifies peak amplitude from true OFDM symbol Time migration of the position to the OFDM symbol position (its character position for being initially based on main plot) assumed.

9, quality factor, such as peak value-average specific (PAR) of the peak value for detection are calculated.

The capture range of CRS-PDP is ± 1/12 OFDM symbol (± 5.56 μ s), since RSIG is by related OFDM It is transmitted on the 6th subcarrier of each of symbol.Any path (corresponding to timing slip) except this capture range will It will lead to surrounding for estimator.Therefore, only when assuming that the timing of OFDM symbol accurately make the deviation in capture range enough When interior, it is able to use CRS-PDP.Therefore, can usually after the above-mentioned estimator based on SS-PDP has been used quilt It uses.

Have an advantage that, possibly, have large number of RSIG come using.For example, bandwidth (BW) for 20MHz and The port 2DL Tx, each unicast sub-frame have 1600 RSIG (compared with 62 S-SSIG and 62 P-SSIG of every 5 subframes) Such as used by the estimator based on SS-PDP.It is greater amount of to allow with reference to (RSIG), compared to from based on SS-PDP estimator It is possible, more accurate estimation.But this benefit is highly dependent on bandwidth.For with 1.4MHz bandwidth and 2DL Tx The SCell of port, each unicast sub-frame only have 96 RSIG.

It, can be by based on threshold value (such as the performance number that should be more than in PDP, for that in alternative estimator A PDP value and be considered as signal path) search first path (such as signal path with minimum offset values), or pass through Average delay rather than search peak are calculated to estimate timing slip.

In alternative estimator operation furthermore, linear phase component/value can be estimated directly rather than in PDP Search peak.

CSI measurement

CSI report describes in 36.213 revised edition 10.9.0 of 3GPP technical specification (TS), subdirectory 7.2.Channel status Information includes channel quality indicator (CQI), pre-coding matrix index (PMI), order instruction (RI) and precoding type instruction It accords with (PTI), all these obtained from reference signal (universal reference signal or dedicated CSI reference signal).Herein CSI measurement is mentioned for integrality.

Attached drawing 5 shows the exemplary method in accordance with some embodiments that executed by UE for SCell activation.

This method starts in step 200, wherein receiving SCell activation request from network node.When in step 200, UE (to known or unknown SCell) when receiving activation request, whether have in step 205 detection UE first any reasonable new Information (the Whole frequency band SCC gain-state generated recently, such as in spy of fresh (nearest) about the gain-state of Whole frequency band It fixes time in the period).The gain-state can be with, such as (has wherein used full range in reception period from previous measurement occasion Band), or know from the nearest SCell activation on related SCC.

If gain-state is unknown (the 205 no-paths for coming from step), the gain in next suitable subframe Search is planned, as shown in step 210.If gain-state is known (come from step 205 is-path), step 210 are skipped and this method is directly to step 215.

In step 215, whether the timing for detecting SCell is that known (such as by whether UE has been measured and reported recently That cell are accused to define).

If timing is unknown (no-path for coming from step 215), UE is assumed initially that according to step 250 and PCell Identical timing, and according to step 255, (such as in FFD in first available subframe for including the case where synchronization signal Lower subframe 0 or 5 is believed with 6) scheduling based on synchronous for TDD S-SSIG subframe 0 and 5 and for TDD P-SSIG subframe 1 Number time deviation (such as SS-PDP) determination, based on universal reference signal time deviation (CRS-PDP) determination and CSI measurement, and detect whether that synchronizing based on SS-PDP has been carried out in step 260.

The synchronous realization not yet of the SS-PDP instruction that (if the no-path for coming from step 260) obtains (for example, if PAR, SINR or some other quality factor are lower than threshold value), network is sent by CSI=0 in step 259 and is repeated previous The step of (step 255).

SS-PDP that (if come from step 260 is-path) obtains instruction synchronize and have been carried out (for example, if PAR, SINR or some other quality factor are higher than threshold value), method proceeds to step 261.

In step 261, detect whether based on synchronization signal time deviation (such as based on SS-PDP extract time it is residual Stay) it is sufficiently small (for example, if the absolute value of the time deviation based on synchronization signal is greater than the time deviation threshold based on synchronization signal Value, therefore, time of extraction residual drop below threshold value) and make about CQI performance (for big timing error, Through generating CQI estimation can not reflect real channel quality precisely enough and should usually be not used) acceptable model In enclosing.

If the time remains not sufficiently small (no-path for coming from step 261), in step 262, it is based on SS-PDP result The timing estimate of SCell is adjusted, in step 270, by the CSI report of instruction default (or nominal) CSI value (such as CSI= 0) it is sent in network, and such as by dispatching CRS-PDP and CSI measurement in first available subframe show step 225.

If the time remains sufficiently small (come from step 261 is-path), this method proceeds to step 230, again in which Detect whether based on universal reference signal time deviation (such as based on CRS-PDP extract time residual) it is sufficiently small (for example, If the absolute value of the time deviation based on universal reference signal is greater than the time deviation threshold value based on universal reference signal, because This, the time residual of extraction drops below threshold value) and the CQI generated estimation is reported.In general, CRS-PDP estimates Meter can be estimated more accurate than SS-PDP.

It is based on according to detection in step 230 if the time remains not sufficiently small (no-path for coming from step 230) CRS-PDP result in step 265 sends network for CSI=0 in step 270 to adjust the timing estimation of SCell, And CRS-PDP and CSI measurement is dispatched in first available subframe, as shown in step 225.

According to detection in step 230, if the time remains sufficiently small (come from step 230 is-path), it is based on CRS-PDP result in step 235 and the timing estimation for adjusting SCell, and the CQI estimation generated can be reported immediately It accuses, as shown in step 240.

In some embodiments, have been able to infer (in step 261) whether CQI can be reported from SS-PDP.In In such situation, step 230 can be skipped and come from step 261 be-path directly goes to step 235.This for from The branch of step 261 to step 230 can be alternative, or can have three branches for coming from step 261 (to step If 235 timing slips be less than first threshold (such as time deviation acceptance threshold based on synchronization signal) if, arrive step 262 Timing slip be greater than second threshold (such as time deviation threshold value based on synchronization signal) and if arrive step 230 timing slip Between the first and second threshold values).

If the SCell timing detected in step 215 is previously known (come from step 215 is-path), this is The timing reference known is by initial using as shown in step 220.In such cases, it remains any time all by it is generally desirable to good Well in the capture range of CRS-PDP, and UE can be used in (unicast) subframe at first and dispatch CRS-PDP and CSI survey Amount, as shown in step 225.

When step 225 has been carried out, this method advances to step 230, and continues as described above.

In effective CSI report, that is, there is CQI value rather than default value (such as 0), after having transmitted to network, such as by step Shown in rapid 240, UE usually immediately begins to the PDCCH on monitoring SCell, and (intersects via PCell also for SCell In the case that carrier wave is dispatched).In addition, usually starting transmission (the 36.321 revised edition 10.8.0 of 3GPP TS of detection reference signal Subdirectory 5.13), and the activation of SCell may be implemented, as shown in step 245.

Notice due to the waiting time in the receiver, it is often impossible in subframe n estimate the time residual and It is used in next subframe n+1.The quantity of subframe before it can use estimation is to realize specifically.For The attached drawing 6 of FDD and for showing some examples in the attached drawing 7 of TDD.

Attached drawing 6 is to show the schematic diagram of the example worst case scenarios for activation blind in FDD.

PCell subframe is shown in 181 started in subframe n, and wherein SCell activation request is received, and is such as shown by 182 (compared with the step 200 of attached drawing 5).Dotted arrow 183, which is shown, be sent to following what subframe n+8 started for network CQI report after SCell activation request 182.

SCell subframe is shown at 180, wherein the subframe that number is 0,4,5 and 9 is unicast sub-frame and other subframes are used for Other purposes (such as MBSFN).First usable subframe for gain search (compared with the step 210 of attached drawing 5) is by 184 Instruction, and first subframe workable for SS-PDP, CRS-PDP and CSI measurement (is compared with the step 255 of attached drawing 5 Compared with) by 185 instruction (most approached in time based on which of they, measurement can be held in subframe 5 or 0 Row).

Therefore, in this case, effective CQI report (compared with the step 240 of attached drawing 5) can be by by earliest The time of 189:1 instruction sends (if corresponding all along them with the detection of step 260 in figure 5,261 and 230 Be-path compares), and CQI report includes CSI=0 earlier.Effective CQI report can be by before sending, if necessary The CRS-PDP and CSI of a new round measure (compared with the step 225 of such as attached drawing 5), CQI report continue include CSI=0 (with it is attached The step 270 of Fig. 5 compares), and CRS-PDP and the CSI measurement of a new round can be accordingly by 186,187 or 188 instructions Subframe in dispatch.Then, effective CQI report (compared with the step 240 of attached drawing 5) can accordingly by 189:2,198:3 or The time of person 189:4 instruction is sent.

Therefore, for FDD, the first report with effective CSI can be in 189:1,189:2,189:3 or 189:4 quilt It sends, has carried out the trial (1 or 2) of how many times and cell synchronous dependent on it, and the residence time detected is much (straight Be informed of a case announcement or first correction timing, repeat CQI estimation, and then report).

Attached drawing 7 is to show the schematic diagram of the example worst case scenarios for the blind activation in TDD.

PCell subframe is shown at 191 that subframe n starts, and wherein SCell activation request is received, and is such as shown by 192 (compared with the step 200 of attached drawing 5).Dotted arrow 193, which is shown, be sent to following what subframe n+8 started for network CQI report after SCell activation request 192.

SCell subframe is shown at 190, wherein the subframe with number 0 and 5 is unicast sub-frame and other subframes are used for it Its purpose (such as subframe 1 and 6 is special subframe and other subframes can be used for the MBSFN of UL).For gain search One usable subframe (compared with the step 210 of attached drawing 5) by 194 instructions (and possible SS-PDP measure), and for SS-PDP, CRS-PDP and CSI measure workable first subframe (compared with the step 255 of attached drawing 5) by 195 instructions.

Therefore, this in this situation, effective CQI report (compared with the step 240 of attached drawing 5) can be by by earliest 199:1 instruction time send (if corresponding all along them with the detection of step 260 in figure 5,261 and 230 Be-path compares), and CQI report includes CSI=0 earlier.Effective CQI report can be by before sending, if necessary The CRS-PDP and CSI of a new round measure (compared with the step 225 of attached drawing 5), and CQI report continues to include CSI=0 (with attached drawing 5 Step 270 compare), and a new round CRS-PDP and CSI measurement can be dispatched in the subframe by the instructions such as 197,198. Then, effective CQI report (compared with the step 240 of attached drawing 5) can be in the time quilt accordingly indicated by 199:2 or 198:3 It sends.

For TDD, it is hypothesized that the last part for the subframe for being designed for gain search can be made in this example With, and therefore the S-SSIG positioned at the tail end of related subframe can be extracted.If situation is not in this way, SS-PDP must It must be dispatched after 5ms.First report with effective CSI can be sent in 199:1,199:2,199:3, dependent on it into The trial (1 perhaps 2) and much (the directly reports or first of residence time for detecting of how many times and cell synchronous are gone Correction timing repeats CQI estimation, and then report).

In some cases, evaluate whether using based on universal reference signal time deviation estimation be it is beneficial (such as CRS-PDP).Attached drawing 8 shows another method example in accordance with some embodiments for SCell activation.This embodiment class It is similar to that described in conjunction with attached drawing 5, but depends only on the time reference estimation (such as SS-PDP) based on synchronization signal. It can be particularly suitable for small bandwidth (such as 6RB), cannot obtain base due to that can have very few CRS in such a case In the good quality of the estimation of CRS-PDP.

This method starts in step 300, and wherein SCell activation request is received.When UE reception activation is asked in step 300 When asking, the reasonably fresh information about the gain-state of Whole frequency band is closed whether step 305 detection UE has to appoint first.

If gain-state is unknown (no-path for coming from step 305), the gain in next suitable subframe Search is planned, as shown in step 310.If gain-state is known (come from step 305 is-path), step 310 are skipped and this method is directly to step 315.

In step 315, whether the timing for detecting SCell is known.

If this is periodically unknown (no-path for coming from step 315), UE assumed initially that according to step 350 with The identical timing of PCell and dispatched in first suitable subframe according to step 355 SS-PDP and CSI measurement, and Detect whether that synchronizing based on SS-PDP has been carried out in step 360.

It is realized not yet if the SS-PDP instruction that (no-path for coming from step 360) obtains is synchronous, in step 359 Network is sent by CSI=0 and repeats previous step (step 355).

It is had been carried out if the SS-PDP instruction that (come from step 360 is-path) obtains synchronizes, method proceeds to step 361, wherein the timing estimation of SCell is adjusted based on SS-PDP result.

In step 365, detect whether that the time residual extracted based on SS-PDP is sufficiently small (for example, the time residual extracted Drop below threshold value) in order in the tolerance interval about CQI performance.If time residual is sufficiently small (to come from step 365 be-path), this method proceeds to step 340, wherein the CQI estimation generated can be reported immediately.If when Between remain not sufficiently small (no-path for coming from step 365), CSI=0 is sent to network in step 370, can at first Using in subframe dispatch CSI measure, such as shown in step 325, and only have after this effective CQI report can be sent To network, as shown in step 340.

If the SCell timing detected in step 315 is previously known (come from step 315 is-path), this is The timing reference known by initial using as shown in step 320, and determine whether in step 321 timing enough accurately (with Step 365 is compared).If timing reference is accurate enough (come from step 321 is-path), in first usable subframe CSI measurement is dispatched, as method continues as described above as shown in step 325 and after this.If timing reference is not smart enough Really (no-path for coming from step 321), SS-PDP and the scheduling CSI survey in first suitable subframe according to step 326 It measures (compared with step 355) and method then proceed to step 361 and continue as described above.

After effective CSI report (i.e. with the CQI for not being 0) has been sent to network (as shown in step 340), SCell activation may be implemented, as shown in step 345.

SS-PDP how can be generated (with the step 255 of such as attached drawing 5 and/or the step 355 of attached drawing 8 in the following, will provide Compared with 326) example.As mentioned before, SS-PDP can be improved and therefore lead to time migration more by reducing ISI Accurate estimation.In order to reduce ISI, three or more partly overlapping OFDM symbol spans (such as around PCell timing ± 1/2 OFDM symbol (± 33.3 μ s)) can be used.

Since partly overlapping symbol is typically only used to SS-PDP, and synchronization signal only only takes up up to 1200RE's Intermediate 72, for the realization that consume with lower software, practicable alternative method, which can be used for obtaining overlapping, accords with Number approximation.The method is explained in conjunction with attached drawing 9 in fig. 10, and wherein Figure 10 is shown for realizing based on FDD The exemplary flow chart of method and attached drawing 9 of the SS PDP of character position is to show LTE FDD signal to arrange exemplary signal Figure.

In attached drawing 9, in 910 (912,914,916 and of OFDM symbol corresponding to CP 911,913,915 and 917 918, wherein 914 include S-SSIG and 916 include P-SSIG) show PCell timing and at 920 (be designated as 922, 924,926 and 928 OFDM symbol span S0, S1, S2 and S3) the SCell timing of hypothesis is shown (that is, wherein SCell FFT Hardware can be operated).Hypothesis has been overlapped with +/- half symbols (being also known as interpolation symbol, such as with 1.92MHz) The OFDM symbol span of SCell timing is shown for S1 (S1-931 and S1+932) and S2 (S2-933 and S2+934), and The possible position in SCell for SSIG is shown by 930.Exemplary method can be described with reference to attached drawing 10 as follows:

1, based on the signal timing for PCell, S- will step 400: be used for using FFT (such as realizing in HW) 3 OFDM symbols S0, S1, S2 (922,924,926) of SSIG and for P-SSIG S1, S2, S3 (924,926,928) turn It is changed to frequency domain.

2, for each symbol, 72 center RE, i.e., the band that wherein synchronization signal can be found step 410: are extracted It is wide.Zero padding is to obtain length 128.It should be noted that other length can also depend on the circumstances and be used, such as about FFT The size of realization.Resolution ratio is typically improved using biggish length but increases complexity.In this example, it is described herein The length of embodiment 64 can be considered, since that length will cover 62 RE in center.Such selection may usually be led Cause poor resolution ratio and more interference.

3, step 420: calculate inverse FFT to obtain the approximation for the time-domain signal seen on such as 1.4MHz (usually according to Rely and realized in FFT).Sample rate for example will correspond to 1.92M samples/sec for 1.4MHz bandwidth of cell.

4, step 430: time-domain OFDM symbol is arranged in vector, is had with the cyclic prefix (CP) of zero substitution.

5, " interpolation " OFDM symbol S1-, S1+, S2- and S2+, (931,932,933,934) step 440: are extracted.

6, " interpolation " symbol of extraction step 450: is supplied to 128 point FFT.

7, it step 460: is calculated based on S1-, S1 and S1+ for S-SSIG, and for S2-, S2 and S2+ of P-SSIG SS-PDP。

Generating SS-PDP can be used to include being converted into time domain.Signal combination can execute to generate SS-PDP in frequency domain (coherently, before transforming to time domain) or in the time domain (incoherently, after being transformed to time domain).Transform to frequency domain and It can be realized from frequency-domain transform and carry the resource unit of synchronization signal and go to rotate.For some thin conjunctions, phase difference can be needed Adjustment (such as S1 and S+, since their offsets about the reference of PGell OFDM symbol are different) and for other combinations It can be unwanted (such as S1 and S2).

Attached drawing 11 is the block diagram of Example receiver.The receiver example may be suitable for executing any side described herein Method, for example, any method of attached drawing 5,8,10 and 12.

The receiver example of attached drawing 11 includes 1100, bandwidth BW receiver front end (FE RX)₀Digital filter (DF) 1110, Fast Fourier Transform (FFT) unit (FFT) 1120, channel estimator (Ch Est) 1130, decoder 1140, signal power are estimated Gauge (Sign Pwr Est) 1150, cell tracker 1180, cell scan device 1170, bandwidth BW₁Digital filter (DF) 1160 and control unit (CU) 1190.Control unit 1190 can be to be for example adapted for that other components is caused in conjunction with any Attached drawing 5,8,10 and 12 and the sequence described is performed the execution of step.

According to some embodiments, when dispatching SS-PDP, CRS-PDP and CSI measurement simultaneously, the receiver of attached drawing 11 can be with In whole dl system bandwidth (BW₀) open.Using FFT hardware accelerator (1120) by received sign reversing for frequently Domain typically results in RB 12 resource units (RE) of each OFDM symbol N (because each resource block has in a frequency domain 12 resource units, see, for example, 3GPP technical specification (TS) 36.211), wherein N_RB is clearly that downlink system is (small Area) bandwidth BW₀Either resource block (such as bandwidth be equal to 6,15,25,50,75 or 100 resource blocks, see, for example, 3GPP skill Art specification (TS) 36.101).The FFT hardware accelerator 1120 can for example be sized to each OFDM symbol time-triggered protocol one A OFDM symbol.If supporting that partly overlapping OFDM symbol of the processing as described in conjunction with attached drawing 9 is desired, it will usually want Ask the faster processing in FFT.This has the quantity of the memory of complexity and/or requirement to FFT hardware accelerator There is negative effect (i.e. increased complexity and/or require more storage spaces).Therefore, the software-based side of attached drawing 10 Method be it is beneficial and can be to avoid about FFT complexity and memory requirement the shortcomings that.

Attached drawing 12 was shown according to wireless communication device and secondary cell time workable for realizing in a cellular communication network The illustrative carrier aggregated application method of synchronous embodiment.When secondary cell activation request has been received (1201, with attached drawing 5 Step 200 and the step 300 of attached drawing 8 compare), it is determined whether the time reference of secondary cell is known for wireless communication device (1202, compared with the step 215 of attached drawing 5 and the step 315 of attached drawing 8).

If (1202) time reference of secondary cell for wireless communication device be it is unknown (come from step 1202 it is no-road Diameter), the time reference of main plot be used as the preliminary time of secondary cell with reference to (1203, with the step 250 of attached drawing 5 and attached drawing 8 Step 350 compares), that is, time ginseng of the preliminary time of secondary cell with reference to the main plot for being set equal to carrier wave aggregated application It examines.

Subsequently, based on preliminary time with reference to executing with one or more synchronization signal for being transmitted in secondary cell (1204) it (is determined based on the time deviation of synchronization signal) based on the time reference detection of synchronization signal, and is joined based on preliminary time It examines and one or more reference signal for transmitting in secondary cell executes referring to based on preliminary time for (1205) secondary cell Channel state measurement.For example, step 1204 and 1205 can execute parallel.Optionally, (and may with step 1204 and/ Or 1205 is parallel) (1206) can also be performed based on the time reference detection of universal reference signal (based on universal reference signal Time deviation determine), compared with the step 255 of attached drawing 5 and the step 355 of attached drawing 8.(the step with attached drawing 5 in step 1207 Rapid 259,240,270 and attached drawing 8 step 359,340,370 compare) based on step 1204 and 1205 (and optionally 1206) Result the value of channel quality indicator (CQI value) is set, and in 1211, will include channel quality indicator (CQI) Channel state information (CSI) report be transferred in cellular communications networks.For example, the value of channel quality indicator can be based on Detection based on synchronization signal is set as nominal value or the value based on the channel state measurement referred to based on preliminary time.

If (1202) time reference of secondary cell is for wireless communication device (come from step 1202 is-path) Know, use that time reference (compared with the step 220 of attached drawing 5 and the step 320 of attached drawing 8).Based on known time reference Channel state measurement (1208) be parallel to the time reference based on universal reference signal detection (1209) and execute (with attached drawing 5 step 225 and the step 326 of attached drawing 8 compare).Time reference detection based on universal reference signal can be used, if The fine tuning for needing known time to refer to.It is set in step 1210 based on the result of step 1208 (and optionally 1209) CQI value (compared with the step 240 of attached drawing 5,270 and the step 340 of attached drawing 8,370) is set, and the CSI report including CQI exists It is transmitted in 1211.

Attached drawing 14 shows schematical wireless communication device (such as modem or UE) (1400) comprising connects Receive device RX (1401), transmitter TX (1402) and signal processor circuit SIGN PROC (1403).Exemplary signal processor circuit Including synchronization signal time reference detector SS DET (1405), (it may include one or more Fast Fourier Transform (FFT) again Unit can be in addition relevant to one or more Fast Fourier Transform (FFT) unit, one or more quick Fu In leaf transformation unit be implemented in hardware and/or software), universal reference signal time reference detector C RS DET (1407) (it may include channel estimator or can be in addition relevant to channel estimator again), channel state information measuring unit CS I MEAS (1409) and processing unit (1404).The wireless communication device 1400 can obey universal mobile telecommunications standard, Long term evolution-UMTS-LTE.

The example modem or UE or wireless device of attached drawing 11 and 14 may include being adapted for carrying out and attached drawing 5, the arrangement of the relevant above-mentioned processing in 8,9,10 and 12.

For example, the receiver 1401 of attached drawing 14 may adapt to receive secondary cell request according to the step 1201 of attached drawing 12, And processing unit 404 may adapt to execute step 1202,1203,1207 and 1210.Processing unit 1404 can be also suitable for In cause synchronization signal time reference detector 1405 execute step 1204, lead to universal reference signal time reference detector 1407 execution steps 1206 and 1209 and cause channel state information measuring unit 1409 execute step 1205 and 1208.It passes Defeated device 1402 may adapt to according to step 1211 transmitting channel state information.

The embodiment of description and their equivalent can be realized in software or hardware or their combination.They Can be by related to communication device or be integrated into the general purpose circuit of communication device and execute, such as digital signal processor (DSP), central processing unit (CPU), collaborative process device unit, field programmable gate array (FPGA) or other programmable hard Part, or executed by special circuit such as specific integrated circuit (ASIC).All such forms are contemplated to be in the disclosure In range.

(such as wireless communication device) can occur in electronic equipment in embodiment comprising circuitry/logic or according to appoint What embodiment executes method.Electronic equipment may, for example, be UE, portable or hand-held mobile radio electrical communication equipment, mobile wireless Electric terminals, mobile phone, communicator, electronic organisers, smart phone, computer, notebook computer, USB- stick, insertion card, The driver or moving game device of insertion.

According to some embodiments, computer program product includes computer-readable media, such as, such as the institute in attached drawing 13 The disk or CD-ROM (1300) shown.The computer-readable media can have stored thereon the computer including program instruction Program.The computer program, which can be, can be loaded into data processing unit (1330), can for example be included in movement In terminal (1310).When being loaded into data processing unit, computer program be stored in it is related to data processing unit or Person is integrated into the memory (1320) of data processing unit.According to some embodiments, computer program can be with, when being loaded into number When according to processing unit and running by, data processing unit is caused to execute according to for example in any attached drawing 5,8,10 and/or 12 Shown in method method and step.

Various embodiments have been referred to herein.But it is wanted skilled person realizes that right will be still fallen within Multiple variations of the embodiment of description in the range of asking.For example, method described herein embodiment passes through with certain sequence quilt The method and step of execution describes exemplary method.However, it will be appreciated that these of event can sequentially occur in other sequences, and Without departing from the scope of the claims.In addition, certain methods step can be performed in parallel, although they have described as by Sequence executes.

In the same way, it should be noted that in describing the embodiments of the present, functional block is divided into specific unit never It is restrictive.Opposite, these segmentations are only example.Functions described herein block can be separated into as a unit Two or more unit.In an identical manner, the functional block being implemented described herein as two or more unit A unit be may be implemented as without beyond the scope of the claims.

It will therefore be appreciated that the details of the embodiment of description is only used for exemplary purpose and restricted by no means 's.But all changes for falling within the scope of the claims are intended to and are included in wherein.

Claims (33)

1. a kind of time synchronization of the acquisition and secondary cell for workable wireless communication device in a cellular communication network Carrier wave aggregated application method, the method includes if the time reference of (215,315,1202) described secondary cell is for described Wireless communication device be it is unknown, then:

It is small equal to the master of the carrier wave aggregated application by the preliminary time reference setting (250,350,1203) of the secondary cell The time reference in area；

Based on the preliminary time with reference to one or more synchronization signal for being transmitted in the secondary cell execute (255, 355,1204) detection based on synchronization signal of the time reference of the secondary cell；

Based on the preliminary time with reference to and one or more reference signal for being transmitted in the secondary cell execute (255, 355,1205) secondary cell based on preliminary time reference channel state measurement；

Based on the detection based on the synchronization signal, (240,259,270,340,359,370,1207) channel quality is set and is indicated The value of symbol is nominal value or the value based on the channel state measurement referred to based on the preliminary time；And

By include the channel quality indicator channel status information reports transmission (240,259,270,340,359,370, 1211) cellular communications networks are given.

2. according to the method described in claim 1, wherein based on the preliminary time with reference to and transmit in the secondary cell One or more synchronization signal execute (255,355,1204) described secondary cell time reference based on the synchronization signal Detection with based on the preliminary time with reference to and one or more reference signal for being transmitted in the secondary cell execute The channel state measurement based on preliminary time reference of (255,355,1204) described secondary cell executes parallel.

3. according to claim 1 to 2 described in any item methods, be provided with the channel quality indicator value include such as Fruit (260,360) does not detect the secondary cell based on the detection instruction of the synchronization signal, then it is described that (259,359) are arranged Channel quality indicator values are the nominal value.

4. according to the method described in claim 3, being provided with the channel quality indicator and further including, if (260,360) Detection instruction based on the synchronization signal detects the secondary cell, then:

Determine the preliminary time with reference between the time reference of the detection based on the synchronization signal based on same Walk the time deviation of signal；And

If the absolute value of the time deviation of (261,365) based on the synchronization signal is greater than the time deviation based on synchronization signal Threshold value, then based on the time reference for adjusting (262,361) described secondary cell based on the time deviation of the synchronization signal and It is the nominal value by channel quality indicator values setting (270,370).

5. according to the method described in claim 4, further include the institute of the time deviation of (if 365) based on the synchronization signal State absolute value less than the time deviation threshold value based on the synchronization signal, then:

Time reference based on time deviation adjustment (361) described secondary cell based on the synchronization signal；And

It is based on the channel state measurement referred to based on the preliminary time by channel quality indicator values setting (340) Value.

6. according to claim 1 to 2 described in any item methods, further include based on the preliminary time with reference to and described auxiliary One or more universal reference signal transmitted in cell executes the base of the time reference of (255,1206) described secondary cell It in the detection of universal reference signal, and is wherein the mark by channel quality indicator values setting (259,270,240) Title value or value based on the channel state measurement referred to based on the preliminary time are also based on based on the universal reference signal Detection.

7. according to the method described in claim 6, further include the exhausted of the time deviation of (if 261) based on the synchronization signal Time deviation threshold value based on the synchronization signal is less than to value, then:

Determine the preliminary time with reference between the time reference of the detection based on the universal reference signal based on logical With the time deviation of reference signal；And

If the absolute value of the time deviation (230) based on the universal reference signal is greater than the time based on universal reference signal Deviation threshold then adjusts the time reference of (265) secondary cell based on the time deviation based on the universal reference signal It and is the nominal value by channel quality indicator values setting (270).

8. according to the method described in claim 7, further include the time deviation of (if 230) based on the universal reference signal Absolute value be less than the time deviation based on the universal reference signal threshold value, then based on based on the universal reference signal when Between deviation and adjust (235) described secondary cell time reference and by the channel quality indicator values setting (240) be base In the value of the channel state measurement referred to based on the preliminary time.

9. according to the method described in claim 6, further include the exhausted of the time deviation of (if 261) based on the synchronization signal Time deviation threshold value based on the synchronization signal is less than to value and is greater than the time deviation acceptance threshold based on synchronization signal, Then:

Determine the preliminary time with reference between the time reference of the detection based on the universal reference signal based on logical With the time deviation of reference signal；And

If the absolute value of the time deviation (230) based on the universal reference signal is greater than the time based on universal reference signal The threshold value of deviation then adjusts the time ginseng of (265) described secondary cell based on the time deviation based on the universal reference signal It examines and is the nominal value by channel quality indicator values setting (270).

10. according to the method described in claim 9, further include the exhausted of the time deviation of (if 261) based on the synchronization signal Time deviation threshold value based on the synchronization signal is less than to value and is less than the time deviation based on the synchronization signal and is received Threshold value is then adjusted based on the time deviation based on the synchronization signal or based on the time deviation of the universal reference signal (235) time reference of the secondary cell and setting (240) channel quality indicator values are based on based on described preliminary The value of the channel state measurement of time reference.

11. according to the method described in claim 6, wherein based on the preliminary time with reference to and transmit in the secondary cell One or more universal reference signal come execute (255) described secondary cell time reference based on the universal reference signal Detection with based on the preliminary time with reference to executing with one or more synchronization signal for being transmitted in the secondary cell (255) detection based on the synchronization signal of the time reference of the secondary cell executes parallel.

12. according to claim 1 to 2 described in any item methods, if further including (215,220,315,320,1202) institute State the time reference of secondary cell be for the wireless communication device it is known, then:

Executed based on the known time reference and one or more reference signal transmitted in the secondary cell (225, 325, the 326,1208) channel state measurement based on known time reference of the secondary cell；

By channel quality indicator values setting (240,279,340,370,1210) for nominal value or based on based on described The value of the channel state measurement of known time reference；And

It will include the channel status information reports transmission (240,270,340,370,1211) of the channel quality indicator To the cellular communications networks.

13. according to claim 1 to 2 described in any item methods, further include initially received from the main plot (200,300, 1201) secondary cell activation request.

14. according to the method described in claim 6, wherein, if the detection instruction of (260) based on the synchronization signal is described auxiliary Cell is detected, then the value of the channel quality indicator is arranged further include:

Determine the preliminary time with reference between the time reference of the detection based on the synchronization signal based on same Walk the time deviation of signal；

It determines in the preliminary time with reference to the base between the time reference of the detection based on the universal reference signal In the time deviation of universal reference signal；

Determine the difference between the time deviation based on the synchronization signal and the time deviation based on the universal reference signal；

If the absolute value of the difference is less than poor threshold value, based on the time deviation based on the synchronization signal and based on described logical Adjust the time reference of the secondary cell at least one of time deviation of reference signal, and by the channel quality Indicator value is set as the value based on the channel state measurement referred to based on the preliminary time；And

If the absolute value of the difference is greater than the poor threshold value, set described nominal for the channel quality indicator values Value.

15. according to claim 1 to method described in any one of 2, wherein executing (255,355,1204) described secondary cell The detection based on the synchronization signal of time reference include two or more orthogonal frequencies based on the synchronization signal Multiplexing-OFDM- symbol and create power delay distribution.

16. according to claim 1 to method described in any one of 2, wherein the main plot and the corresponding carrier wave of secondary cell Frequency is:

It is discrete and be located at identical frequency band in；Or

In different frequency bands.

17. according to claim 1 to method described in any one of 2, wherein the wireless communication device and the honeycomb are logical Communication network obeys universal mobile telecommunications standard, long term evolution-UMTS-LTE.

18. according to claim 1 to 2 described in any item methods, wherein based on the preliminary time with reference to and described auxiliary One or more synchronization signal transmitted in cell executes the inspection based on synchronization signal of the time reference of the secondary cell Survey includes:

Based on the preliminary time with reference to described one or more synchronization signal transmitted in the secondary cell is held Row Fast Fourier Transform (FFT) is to generate the signal of transformation；

Extract the relevant portion of the signal of the transformation；

The signal element of additional zero value generates the signal section of the transformation of zero padding to the part of the extraction；

Inverse fast Fourier transform is executed to generate the signal of reconstruction to the signal section of the transformation of the zero padding；

Signal based on reconstruction described in one or more corresponding alternative time reference pair executes one or more quick Fu In leaf transformation to generate one or more corresponding transformation signal it is alternative；

The signal of signal and one or more of transformation based on the reconstruction alternative and create power delay distribution；With And

Power delay distribution based on the creation detects the time reference of the secondary cell.

19. a kind of computer-readable medium (1300) has the computer program including program instruction, the computer journey thereon Sequence can load in data processing unit and be suitable for causing when the data processing unit runs the computer program It executes according to claim 1 to method described in any one of 18.

20. a kind of equipment for workable wireless communication device in a cellular communication network, is suitable for acquisition and carrier wave The time synchronization of the secondary cell of aggregated application, the equipment include transmitter (1402), receiver (1401) and signal processor Circuit (1403), in which:

The receiver (1401) be suitable for receiving one or more synchronization signal transmitted in the secondary cell and One or more reference signal transmitted in the secondary cell；

The signal processor circuit (1403) is suitable for, if the time reference of the secondary cell fills the wireless communication It is unknown for setting, then:

By the preliminary time of the secondary cell with reference to the time reference for the main plot for being equal to the carrier wave aggregated application；

Based on the preliminary time with reference to one or more synchronization signal for being transmitted in the secondary cell come described in executing The detection based on synchronization signal of the time reference of secondary cell；

Based on the preliminary time with reference to one or more reference signal for being transmitted in the secondary cell come described in executing The channel state measurement based on preliminary time reference of secondary cell；

Based on the detection based on the synchronization signal, channel quality indicator values are set and is nominal value or is based on based on described first Walk the value of the channel state measurement of time reference；And

The transmitter (1402) is suitable for the channel status information reports including the channel quality indicator being transferred to institute State cellular communications networks.

21. equipment according to claim 20, wherein if the detection instruction based on the synchronization signal does not detect The secondary cell, then the signal processor circuit is suitable for setting the nominal value for the channel quality indicator values.

22. equipment according to claim 21, wherein if the detection instruction based on the synchronization signal detects institute Secondary cell is stated, then the signal processor circuit is suitable for:

It determines in the preliminary time with reference to being believed between the time reference of the detection based on the synchronization signal based on synchronous Number time deviation；And

If the absolute value of the time deviation based on the synchronization signal is greater than the time deviation threshold value based on synchronization signal, it is based on The time reference of the secondary cell is adjusted based on the time deviation of the synchronization signal and by the channel quality indicator Value is set as the nominal value.

23. equipment according to claim 22, wherein if the absolute value of the time deviation based on the synchronization signal Less than the time deviation threshold value based on the synchronization signal, the signal processor circuit is also adapted to:

The time reference of the secondary cell is adjusted based on the time deviation based on the synchronization signal；And

The value based on the channel state measurement referred to based on the preliminary time is set by the channel quality indicator values.

24. according to described in any item equipment of claim 20 to 22, wherein the signal processor circuit is also adapted to base In the preliminary time with reference to described auxiliary to execute with one or more universal reference signal for being transmitted in the secondary cell The detection based on universal reference signal of the time reference of cell, and furthermore by the channel quality indicator values basic setup For the nominal value or based on the letter based on preliminary time reference in the detection based on the universal reference signal The value of road state measurement.

25. equipment according to claim 24, wherein if the absolute value of the time deviation based on the synchronization signal Less than the time deviation threshold value based on the synchronization signal, then the signal processor circuit is further adapted to:

Determine the preliminary time with reference between the time reference of the detection based on the universal reference signal based on logical With the time deviation of reference signal；And

If the absolute value of the time deviation based on the universal reference signal is greater than the time deviation based on universal reference signal Threshold value adjusts the time reference of the secondary cell based on the time deviation based on the universal reference signal and by the channel Quality indicator value is set as the nominal value.

26. equipment according to claim 25, wherein if the time deviation based on the universal reference signal is absolute Value is less than the threshold value of the time deviation based on the universal reference signal, then the signal processor circuit is further adapted to, The time reference of the secondary cell is adjusted based on the time deviation based on the universal reference signal and by the channel quality Indicator value is set as the value based on the channel state measurement referred to based on the preliminary time.

27. equipment according to claim 24, wherein if the absolute value of the time deviation based on the synchronization signal Less than the time deviation threshold value based on the synchronization signal and it is greater than the time deviation acceptance threshold based on synchronization signal, then institute Signal processor circuit is stated to be further adapted to:

It determines in the preliminary time with reference to the base between the time reference of the detection based on the universal reference signal In the time deviation of universal reference signal；And

If the absolute value of the time deviation based on the universal reference signal is greater than the time deviation based on universal reference signal Threshold value, then based on the time reference for adjusting the secondary cell based on the time deviation of the universal reference signal and by institute It states channel quality indicator values and is set as the nominal value.

28. equipment according to claim 27, wherein if the absolute value of the time deviation based on the synchronization signal is small In the time deviation threshold value based on the synchronization signal and it is less than the time deviation acceptance threshold based on the synchronization signal, then The signal processor circuit is further adapted to, based on the time deviation based on the synchronization signal or based on described general The time deviation of reference signal is base to adjust the time reference of the secondary cell and the channel quality indicator values are arranged In the value of the channel state measurement referred to based on the preliminary time.

29. according to described in any item equipment of claim 20 to 23, wherein if the time reference of the secondary cell for The wireless communication device be it is known, then the signal processor circuit is further adapted to:

Based on the known time reference and one or more reference signal transmitted in the secondary cell to execute State the channel state measurement based on known time reference of secondary cell；

Nominal value is set by the channel quality indicator values or based on the channel status referred to based on the known time The value of measurement.

30. according to described in any item equipment of claim 20 to 23, wherein the receiver (1401) is further adapted to From the main plot receive secondary cell activation request and, wherein the signal processor circuit is suitable for being arranged described preliminary Time reference executes the detection based on the synchronization signal of the time reference, what execution was referred to based on the preliminary time Channel state measurement, and the value of the channel quality indicator is set in response to received described auxiliary small by the receiver Area's activation request.

31. a kind of includes the modem according to described in any item equipment of claim 20 to 30.

32. a kind of includes described in any item equipment according to claim 20 to 30 or tune according to claim 31 The wireless communication device of modulator-demodulator.

33. according to the wireless communication device of claim 32, wherein the wireless communication device obeys universal mobile telecommunications Standard, long term evolution-UMTS-LTE.