CN103856308A - Method and device used for determining time bias information based on upstream channel signal - Google Patents

Abstract

The invention aims at providing a method and device used for determining time bias information based on an upstream channel signal. A time bias determination device obtains channel estimation information corresponding to a signal received by an upstream channel, conducts correlation processing on the channel estimation information according to the corresponding subcarrier interval, and conducts time domain accumulation and phase conversion on at least one piece of the obtained one or more pieces of correlated information so that time bias information corresponding to the received signal can be obtained. Compared with the prior art, the time bias of the upstream channel is determined through the obtained channel estimation information corresponding to the received signal and through the frequency domain correlation, and therefore the current time bias condition can be reflected, time bias changes can be tracked in real time, the accuracy of the time bias information obtained by the upstream channel is improved, the user access success rate is improved, and performance of a system is improved.

Description

For the method and apparatus of the breath that really regularly believes one side only based on uplink channel signals

Technical field

The present invention relates to wireless communication field, relate in particular to a kind of technology for the breath that really regularly believes one side only based on uplink channel signals.

Background technology

If time offset estimation is not accurate enough, the decoding performance of PUCCH (Physical Uplink Control Channel, physical uplink control channel) just will obviously reduce.Especially in the process of the initial access of user, owing to there is no PUSCH (Physical Uplink Shared Channel, physical uplink link sharing channel) transmission, when each user initial, inclined to one side estimation will be based on RACH (Random Access Channel, Random Access Channel) detection, and base station can send out the time adjust order (time advance command) give user to adjust its transmission time.But the timing of the signal that base station receives from user may postpone the time variation distributing and change in real time because of user's mobility and multipath channel, it is irrational therefore utilizing when previously transmission was estimated partially value to do partial compensation for the time at current time.Larger when residual assistant general can reduce the decoding performance of PUCCH, or even due to the mistake of the ACK feedback decoding of message 4, the failure that causes user to access.Therefore while needing to obtain more accurately, be partially worth.

Summary of the invention

The object of this invention is to provide a kind of method and apparatus for the breath that really regularly believes one side only based on uplink channel signals.

According to an aspect of the present invention, provide a kind of method for the breath that really regularly believes one side only based on uplink channel signals, wherein, the method comprises the following steps:

A obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information;

B carries out cross correlation process to described channel estimating information by corresponding subcarrier spacing, to obtain one or more cross-correlation information;

C by described one or more cross-correlation information at least one to carry out time domain cumulative, to obtain corresponding accumulation result;

D carries out phase transition to described accumulation result, and breath believes one side only when corresponding with described received signal to obtain.

According to a further aspect in the invention, also provide a kind of time inclined to one side determining device for the breath that really regularly believes one side only based on uplink channel signals, wherein, this device comprises:

Acquiring unit, for obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information;

Correlation unit, for described channel estimating information is carried out to cross correlation process by corresponding subcarrier spacing, to obtain one or more cross-correlation information;

Cumulative unit, for by described one or more cross-correlation information, at least one carries out time domain and adds up, to obtain corresponding accumulation result;

Converting unit, for described accumulation result is carried out to phase transition, breath believes one side only when corresponding with described received signal to obtain.

In accordance with a further aspect of the present invention, also provide a kind of for the receiving equipment for the breath that really regularly believes one side only based on uplink channel signals, comprised time inclined to one side determining device as described above.

Compared with prior art, the present invention by obtained with through the corresponding channel estimating information of up channel received signal, carry out cross correlation process according to corresponding subcarrier spacing, and in obtained one or more cross-correlation information, at least one carries out the cumulative and phase transition of time domain, breath believes one side only when corresponding with described received signal to obtain, thereby can reflect inclined to one side situation when current, when real-time tracing, partially change, time the believe one side only accuracy of breath that has improved that up channel obtains, improve the success rate of user's access, and then improve the performance of system.And the present invention can also be according to the signal correction information of received signal, set up or upgrade described subcarrier spacing, for carrying out cross correlation process; Thereby obtain the cross-correlation information that meets demand, thereby believe one side only breath when obtaining more accurately, time the believe one side only accuracy of breath that has improved that up channel obtains, has improved the success rate of user's access, and then has improved the performance of system.And, the present invention can also carry out respectively cross correlation process to described pilot tone estimated information and described data estimation information, and add up according to corresponding weight, thereby the cross-correlation information with different weights is weighted to processing, breath believes one side only when obtaining more accurately, time the believe one side only accuracy of breath that has improved that up channel obtains, has improved the success rate of user's access, and then has improved the performance of system.And the present invention can also utilize the breath that believes one side only when described to compensate processing to described channel estimating information; And according to extracting corresponding signal component through up channel received signal and carrying out channel estimation process, to complete the processing of channel partial compensation for the time, improve systematic function.And the present invention can also be according to time the determining of breath of believing one side only when the trigger condition of breath triggers that believe one side only of described received signal, thereby can improve the treatment effeciency of this method, improve systematic function.

Accompanying drawing explanation

By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:

Fig. 1 illustrates a kind of time inclined to one side determining device schematic diagram for the breath that really regularly believes one side only based on uplink channel signals according to one aspect of the invention;

Fig. 2 illustrates a kind of time inclined to one side determining device schematic diagram for the breath that really regularly believes one side only based on uplink channel signals in accordance with a preferred embodiment of the present invention;

Fig. 3 illustrates a kind of method flow diagram for the breath that really regularly believes one side only based on uplink channel signals according to a further aspect of the present invention;

Fig. 4 illustrates a kind of method flow diagram for the breath that really regularly believes one side only based on uplink channel signals in accordance with a preferred embodiment of the present invention.

In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.

Embodiment

Below in conjunction with accompanying drawing, the present invention is described in further detail.

Fig. 1 illustrates a kind of time inclined to one side determining device schematic diagram for the breath that really regularly believes one side only based on uplink channel signals according to one aspect of the invention; Wherein, time, inclined to one side determining device comprises acquiring unit 11, correlation unit 12, cumulative unit 13, converting unit 14.Particularly, acquiring unit 11 obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information; Correlation unit 12 carries out cross correlation process to described channel estimating information by corresponding subcarrier spacing, to obtain one or more cross-correlation information; Cumulative unit 13 will be in described one or more cross-correlation information at least one carry out time domain and add up, to obtain corresponding accumulation result; Converting unit 14 is carried out phase transition to described accumulation result, and breath believes one side only when corresponding with described received signal to obtain.Wherein, when described, inclined to one side determining device includes but not limited to can realize arbitrarily and partially calculates and definite computing equipment or computing unit when described.Wherein, described up channel includes but not limited to uplink control channel (PUCCH), uplink shared channel (PUSCH) or uplink sounding reference signal SRS.

Between above-mentioned each unit, be constant work, at this, it will be understood by those skilled in the art that " continuing " refers to above-mentioned each unit respectively in real time, or according to the mode of operation requirement of setting or adjust in real time, carry out that the obtaining of channel estimating information, cross correlation process, time domain are cumulative, phase transition is with obtaining of the breath that believes one side only in time etc., until time inclined to one side determining device stop obtaining with through the corresponding channel estimating information of up channel received signal.

Acquiring unit 11 obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information.Particularly, acquiring unit 11 is by having and carrying out alternately, obtaining described channel estimating information through the Relational database of the corresponding channel estimating information of up channel received signal; Or with the related device in up channel receiver, as Deplexing apparatus carries out alternately, obtain after described reception signal demultiplexing, at least one in pilot signal and the data-signal corresponding with described reception signal, and then obtain at least one in the pilot frequency information of described received signal and data message.At this, utilize

represent the channel estimating information based on described pilot frequency information, utilize

represent the channel estimating information based on described data; Wherein, i represents subcarrier sequence number, and p represents symbol sequence number, and a represents reception antenna sequence number.Acquiring unit 11 obtains with in at least one information, for example, in the time that the signal format of received signal is normal PUCCH format 1/1a/1b or 2/2a/2b, can obtain simultaneously

with

information; And in the time being applied to the PUCCH form 1/1a/1b (shortened PUCCH format 1/1a/1b) of shortening, in the end the channel estimating on an OFDM symbol can not be used, because last OFDM symbol is retained for detection reference signal (Sounding Reference Signal, SRS).At this, with comprise through the corresponding channel estimating information of up channel received signal with need carry out the targeted customer of partial compensation for the time corresponding, channel estimating information in each reception antenna, each subcarrier sequence number and each symbol sequence number.

Correlation unit 12 carries out cross correlation process to described channel estimating information by corresponding subcarrier spacing, to obtain one or more cross-correlation information.Particularly, correlation unit 12 passes through according to described channel estimating information, the described channel estimating information channel estimating information with certain subcarrier spacing is corresponding thereto carried out to cross correlation process, for example, if acquiring unit 11 has obtained respectively channel estimating information based on described pilot frequency information and channel estimating information based on described data, described channel estimating information based on described pilot frequency information, the channel estimating information with certain subcarrier spacing are corresponding thereto carried out to cross correlation process; To the described channel estimating information based on described data message in like manner, thus obtain one or more cross-correlation information.The upper example that continues, for example, utilizes

the channel estimating information that represents to have certain subcarrier spacing, wherein, s represents the interval between subcarrier, described subcarrier can arrange or determine according to signal correction information according to system default; At this, according to the main character of Fourier transform time conversion, for any real number t ₀if, h (t)=f (t-t ₀),

therefore, described channel estimating information is carried out to cross correlation process by corresponding subcarrier spacing,, to the channel estimating information based on pilot tone, has:

${\tilde{H}}_{i,p,a}^{\mathrm{pilot}}\×{\left({\tilde{H}}_{i+s,p,a}^{\mathrm{pilot}}\right)}^{*}=e^{-2\mathrm{\πj}\widehat{\mathrm{\τ}}\·\mathrm{s\Δf}}{\left|\right|{\tilde{H}}_{i,p,a}^{\mathrm{pilot}}\left|\right|}^2$ (formula 1)

To the channel estimating information based on data, have:

$\mathrm{sym}\·{\tilde{H}}_{i,p,a}^{\mathrm{data}}\×{(\mathrm{sym}\·{\tilde{H}}_{i+s,p,a}^{\mathrm{data}})}^{*}=e^{-2\mathrm{\πj}\widehat{\mathrm{\τ}}\·\mathrm{s\Δf}}{\left|\right|{\tilde{H}}_{i,p,a}^{\mathrm{data}}\left|\right|}^2$ (formula 2)

Thereby obtain the one or more cross-correlation information corresponding with described pilot frequency information and data message.At this, sym is the signal after ovennodulation that up channel sends, and can offset, therefore without the concrete numerical value obtaining about sym in relevant.

Cumulative unit 13 will be in described one or more cross-correlation information at least one carry out time domain and add up, to obtain corresponding accumulation result.Particularly, it is cumulative that in one or more cross-correlation information that cumulative unit 13 calculates correlation unit 12, at least one carries out time domain, the upper example that continues, when described channel estimating information comprises described pilot tone estimated information and described data estimation information, as shown in Equation 3: $C_T\left(s\right)=\mathrm{\ΣCrossCorrleation}\left({\tilde{H}}^{\mathrm{pilot}}\right)+\mathrm{\ΣCrossCorrleation}(\mathrm{sym}\·{\tilde{H}}^{\mathrm{data}})$ (formula 3)

Thereby obtain corresponding accumulation result.

Converting unit 14 is carried out phase transition to described accumulation result, and breath believes one side only when corresponding with described received signal to obtain.Particularly, converting unit 14 is to described accumulation result, by utilizing the mode of phase transition, and with corresponding multiplication, thereby the time breath that believes one side only that must be corresponding with described received signal.The upper example that continues, as shown in Equation 4: $\widehat{\mathrm{\τ}}=\frac{1}{2\mathrm{\π}}\frac{1}{\mathrm{s\Δf}}\mathrm{angle}\left(C_T\left(s\right)\right)$ (formula 4)

Wherein, described Δ f is the interval between system subcarrier, as the 15KHz that is spaced apart between LTE subcarrier.

Preferably, when described, inclined to one side determining device also comprises interval determining unit (not shown), and wherein, described interval determining unit, according to the signal correction information of described received signal, is set up or upgrades described subcarrier spacing, for carrying out cross correlation process.Particularly, interval determining unit, according to the signal correction information of described received signal, as signal format or signal rate etc., if there is described subcarrier spacing s, is upgraded described subcarrier spacing; If there is not described subcarrier spacing s, described subcarrier spacing is set up, for carrying out cross correlation process.

Preferably, in the time that described channel estimating information comprises described pilot tone estimated information and described data estimation information, described correlation unit 12 can carry out cross correlation process by corresponding subcarrier spacing to described channel estimating information, to obtain one or more cross-correlation information, wherein, described one or more cross-correlation information comprises the one or more pilot tone cross-correlation information corresponding with described pilot tone estimated information, and the one or more data cross-correlation information corresponding with described data estimation information.Particularly, in the time that described channel estimating information comprises described pilot tone estimated information and described data estimation information, described correlation unit 12 can be corresponding to described and described pilot tone estimated information one or more pilot tone cross-correlation information, and the one or more data cross-correlation information corresponding with described data estimation information are carried out cross correlation process by corresponding subcarrier spacing respectively, wherein, described in described processing mode and Fig. 1, the processing mode of correlation unit 12 is same or similar, repeat no more herein, and be contained in this with the form of quoting.

More preferably, weight accumulation process can, according to the weight information of the weight information of described pilot tone estimated information and described data estimation information, be pressed to the corresponding cross-correlation information of described pilot tone estimated information and the corresponding cross-correlation information of described data estimation information in described cumulative unit 13.Particularly, when described channel estimating information comprises described pilot frequency information and described data message, the weight information of described pilot frequency information and the weight information of described data message that described cumulative unit 13 can be adjusted by system intialization or in real time, press weight accumulation process to the corresponding cross-correlation information of described pilot frequency information and the corresponding cross-correlation information of described data message.Wherein, described weight can be passed through according to the signal correction information of described received signal, and as signal format, translational speed etc., the weight information to described pilot frequency information and the weight information of described data message are determined.

Preferably, when described, inclined to one side determining device also comprises compensating unit (not shown), and wherein, described compensating unit utilizes the breath that believes one side only when described, and described channel estimating information is compensated to processing.Particularly, the compensating unit breath that believes one side only while utilizing converting unit 14 determined, compensates processing to received signal, further, can also carry out Data Detection processing etc., thus to described received signal time partially adjust.

Preferably, described acquiring unit 11 can obtain through up channel received signal; From described received signal, extract corresponding targeted customer's signal, wherein, described targeted customer's signal comprises at least one in the pilot frequency information of described received signal and data message; Described targeted customer's signal is carried out to channel estimation process, to obtain described channel estimating information, wherein, described channel estimating information comprises at least one in described pilot tone estimated information and described data estimation information, and described pilot tone estimated information and described data estimation information correspond respectively to described pilot frequency information and described data message.Particularly, described acquiring unit 11 can be by various communication protocol, obtains through up channel received signal; And utilize as modes such as demultiplexings, from described received signal, extract the channel estimating information corresponding with described pilot frequency information and data message; Or by other extracting modes, only from described received signal, extract in the channel estimating information corresponding with described pilot frequency information and data message one etc.; By utilizing the mode such as channel compensation or data sequence compensation, described targeted customer's signal is carried out to channel estimation process, to obtain described channel estimating information.For example, in the time that described up channel comprises PUCCH, described acquiring unit 11, by obtaining the received signal through PUCCH, carries out demultiplexing to described through PUCCH received signal, obtains pilot frequency information and the data message of received signal; Pilot frequency information to the described received signal in described targeted customer's signal and data message carry out respectively channel estimation process, to obtain described channel estimating information.

Fig. 2 illustrates a kind of time inclined to one side determining device schematic diagram for the breath that really regularly believes one side only based on uplink channel signals in accordance with a preferred embodiment of the present invention; Wherein, when described, inclined to one side determining device comprises detecting unit 15 ', acquiring unit 11 ', correlation unit 12 ', cumulative unit 13 ', converting unit 14 '.Particularly, detecting unit 15 ' detects and whether meets time the believe one side only trigger condition of breath of determining described received signal; When meeting described trigger condition, acquiring unit 11 ' obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information; Correlation unit 12 ' carries out cross correlation process to described channel estimating information by corresponding subcarrier spacing, to obtain one or more cross-correlation information; Cumulative unit 13 ' will be in described one or more cross-correlation information at least one carry out time domain and add up, to obtain corresponding accumulation result; Converting unit 14 ' is carried out phase transition to described accumulation result, and breath believes one side only when corresponding with described received signal to obtain.Wherein, described correlation unit 12 ', cumulative unit 13 ', converting unit 14 ' are identical with corresponding intrument shown in Fig. 1 or basic identical respectively, so locate to repeat no more, and mode is by reference contained in this.

Between above-mentioned each unit, be constant work, at this, it will be understood by those skilled in the art that " continuing " refers to above-mentioned each unit respectively in real time, or according to the mode of operation requirement of setting or adjust in real time, the obtaining of detection, channel estimating information, cross correlation process, the time domain of carrying out trigger condition are cumulative, phase transition is with obtaining of the breath that believes one side only in time etc., until time inclined to one side determining device stop obtaining with through the corresponding channel estimating information of up channel received signal.

Detecting unit 15 ' detects whether meet time the believe one side only trigger condition of breath of determining described received signal.Particularly, detecting unit 15 ' is by according to the sense cycle of system intialization or according to predetermined detection mode, and time the believe one side only trigger condition of breath of described received signal is detected; Wherein, described trigger condition includes but not limited to believe one side only constantly breath excessive (exceed a timing partially threshold value) or stop carrying out PUSCH transmission and exceed certain hour threshold value etc. of initial access.When meeting described trigger condition, acquiring unit 11 ' obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information.Wherein, described in described obtain manner and Fig. 1, the obtain manner of acquiring unit 11 is same or similar, so locate to repeat no more, and mode is by reference contained in this.

Fig. 3 illustrates a kind of method flow diagram for the breath that really regularly believes one side only based on uplink channel signals according to a further aspect of the present invention.Particularly, in step s1, time inclined to one side determining device obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information; In step s2, time inclined to one side determining device described channel estimating information is carried out to cross correlation process by corresponding subcarrier spacing, to obtain one or more cross-correlation information; In step s3, time inclined to one side determining device by described one or more cross-correlation information at least one to carry out time domain cumulative, to obtain corresponding accumulation result; In step s4, time inclined to one side determining device described accumulation result is carried out to phase transition, breath believes one side only when corresponding with described received signal to obtain.Wherein, described up channel includes but not limited to uplink control channel (PUCCH), uplink shared channel (PUSCH) or uplink sounding reference signal SRS.

Between above steps, be constant work, at this, it will be understood by those skilled in the art that " continuing " refers to that above steps respectively in real time, or according to the mode of operation requirement of setting or adjust in real time, carry out that the obtaining of channel estimating information, cross correlation process, time domain are cumulative, phase transition is with obtaining of the breath that believes one side only in time etc., until time inclined to one side determining device stop obtaining with through the corresponding channel estimating information of up channel received signal.

In step s1, time inclined to one side determining device obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information.Particularly, in step s1, time inclined to one side determining device by having and carrying out alternately, obtaining described channel estimating information through the Relational database of the corresponding channel estimating information of up channel received signal; Or with the related device in up channel receiver, as Deplexing apparatus carries out alternately, obtain after described reception signal demultiplexing, at least one in pilot signal and the data-signal corresponding with described reception signal, and then obtain at least one in the pilot frequency information of described received signal and data message.At this, utilize represent the channel estimating information based on described pilot frequency information, utilize

represent the channel estimating information based on described data; Wherein, i represents subcarrier sequence number, and p represents symbol sequence number, and a represents reception antenna sequence number.In step s1, time inclined to one side determining device obtain

with

in at least one information, for example, in the time that the signal format of received signal is normal PUCCH format 1/1a/1b or 2/2a/2b, can obtain simultaneously

with

information; And in the time being applied to the PUCCH form 1/1a/1b (shortenedPUCCH format 1/1a/1b) of shortening, in the end the channel estimating on an OFDM symbol can not be used, because last OFDM symbol is retained for detection reference signal (Sounding Reference Signal, SRS).At this, with comprise through the corresponding channel estimating information of up channel received signal with need carry out the targeted customer of partial compensation for the time corresponding, channel estimating information in each reception antenna, each subcarrier sequence number and each symbol sequence number.

In step s2, time inclined to one side determining device described channel estimating information is carried out to cross correlation process by corresponding subcarrier spacing, to obtain one or more cross-correlation information.Particularly, in step s2, time inclined to one side determining device by according to described channel estimating information, the described channel estimating information channel estimating information with certain subcarrier spacing is corresponding thereto carried out to cross correlation process, for example, if in step s1, time inclined to one side determining device obtained respectively channel estimating information based on described pilot frequency information and channel estimating information based on described data, described channel estimating information based on described pilot frequency information, the channel estimating information with certain subcarrier spacing are corresponding thereto carried out to cross correlation process; To the described channel estimating information based on described data message in like manner, thus obtain one or more cross-correlation information.The upper example that continues, for example, utilizes

the channel estimating information that represents to have certain subcarrier spacing, wherein, s represents the interval between subcarrier, described subcarrier can arrange or determine according to signal correction information according to system default; At this, according to the main character of Fourier transform time conversion, for any real number t ₀if, h (t)=f (t-t ₀),

therefore, described channel estimating information is carried out to cross correlation process by corresponding subcarrier spacing,, to the channel estimating information based on pilot tone, has: ${\tilde{H}}_{i,p,a}^{\mathrm{pilot}}\×{\left({\tilde{H}}_{i+s,p,a}^{\mathrm{pilot}}\right)}^{*}=e^{-2\mathrm{\πj}\widehat{\mathrm{\τ}}\·\mathrm{s\Δf}}{\left|\right|{\tilde{H}}_{i,p,a}^{\mathrm{pilot}}\left|\right|}^2$ (formula 5)

To the channel estimating information based on data, have: $\mathrm{sym}\·{\tilde{H}}_{i,p,a}^{\mathrm{data}}\×{(\mathrm{sym}\·{\tilde{H}}_{i+s,p,a}^{\mathrm{data}})}^{*}=e^{-2\mathrm{\πj}\widehat{\mathrm{\τ}}\·\mathrm{s\Δf}}{\left|\right|{\tilde{H}}_{i,p,a}^{\mathrm{data}}\left|\right|}^2$ (formula 6)

Thereby obtain the one or more cross-correlation information corresponding with described pilot frequency information and data message.At this, sym is the signal after ovennodulation that up channel sends, and can offset, therefore without the concrete numerical value obtaining about sym in relevant.

In step s3, time inclined to one side determining device by described one or more cross-correlation information at least one to carry out time domain cumulative, to obtain corresponding accumulation result.Particularly, in step s3, time inclined to one side determining device by one or more cross-correlation information of calculating in step s2 at least one to carry out time domain cumulative, upper example continues, when described channel estimating information comprises described pilot tone estimated information and described data estimation information, as shown in Equation 7: $C_T\left(s\right)=\mathrm{\ΣCrossCorrleation}\left({\tilde{H}}^{\mathrm{pilot}}\right)+\mathrm{\ΣCrossCorrleation}(\mathrm{sym}\·{\tilde{H}}^{\mathrm{data}})$ (formula 7)

Thereby obtain corresponding accumulation result.

In step s4, time inclined to one side determining device described accumulation result is carried out to phase transition, breath believes one side only when corresponding with described received signal to obtain.Particularly, in step s4, time inclined to one side determining device to described accumulation result, by utilizing the mode of phase transition, and with corresponding multiplication, thereby the time breath that believes one side only that must be corresponding with described received signal.The upper example that continues, as shown in Equation 8: $\widehat{\mathrm{\τ}}=\frac{1}{2\mathrm{\π}}\frac{1}{\mathrm{s\Δf}}\mathrm{angle}\left(C_T\left(s\right)\right)$ (formula 8)

Wherein, described Δ f is the interval between system subcarrier, as the 15KHz that is spaced apart between LTE subcarrier.

Preferably, when described, inclined to one side determining device also comprises step s6 (not shown), wherein, in step s6, time inclined to one side determining device according to the signal correction information of described received signal, set up or upgrade described subcarrier spacing, for carrying out cross correlation process.Particularly, in step s6, time inclined to one side determining device according to the signal correction information of described received signal, as signal format or signal rate etc., if there is described subcarrier spacing s, described subcarrier spacing is upgraded; If there is not described subcarrier spacing s, described subcarrier spacing is set up, for carrying out cross correlation process.

Preferably, in the time that described channel estimating information comprises described pilot tone estimated information and described data estimation information, in step s2, time inclined to one side determining device can carry out cross correlation process by corresponding subcarrier spacing to described channel estimating information, to obtain one or more cross-correlation information, wherein, described one or more cross-correlation information comprises the one or more pilot tone cross-correlation information corresponding with described pilot tone estimated information, and the one or more data cross-correlation information corresponding with described data estimation information.Particularly, in the time that described channel estimating information comprises described pilot tone estimated information and described data estimation information, in step s2, time inclined to one side determining device can be corresponding to described and described pilot tone estimated information one or more pilot tone cross-correlation information, and the one or more data cross-correlation information corresponding with described data estimation information are carried out cross correlation process by corresponding subcarrier spacing respectively, wherein, described in described processing mode and Fig. 3, the processing mode of step s2 is same or similar, repeat no more herein, and be contained in this with the form of quoting.

More preferably, in step s3, time inclined to one side determining device can be according to the weight information of the weight information of described pilot tone estimated information and described data estimation information, to the corresponding cross-correlation information of described pilot tone estimated information and the corresponding cross-correlation information of described data estimation information by weight accumulation process.Particularly, when described channel estimating information comprises described pilot frequency information and described data message, in step s3, time the inclined to one side determining device weight information of described pilot frequency information and the weight information of described data message that can adjust by system intialization or in real time, press weight accumulation process to the corresponding cross-correlation information of described pilot frequency information and the corresponding cross-correlation information of described data message.Wherein, described weight can be passed through according to the signal correction information of described received signal, and as signal format, translational speed etc., the weight information to described pilot frequency information and the weight information of described data message are determined.

Preferably, when described, inclined to one side determining device also comprises step s7 (not shown), wherein, in step s7, time inclined to one side determining device utilize the breath that believes one side only when described, described channel estimating information is compensated to processing.Particularly, in step s7, time inclined to one side determining device utilize the breath that believes one side only when determined in step s4, received signal is compensated to processing, further, can also carry out Data Detection processing etc., thereby to described received signal time partially adjust.

Preferably, in step s1, time inclined to one side determining device can obtain through up channel received signal; From described received signal, extract corresponding targeted customer's signal, wherein, described targeted customer's signal comprises at least one in the pilot frequency information of described received signal and data message; Described targeted customer's signal is carried out to channel estimation process, to obtain described channel estimating information, wherein, described channel estimating information comprises at least one in described pilot tone estimated information and described data estimation information, and described pilot tone estimated information and described data estimation information correspond respectively to described pilot frequency information and described data message.Particularly, in step s1, time inclined to one side determining device can be by various communication protocol, obtain through up channel received signal; And utilize as modes such as demultiplexings, from described received signal, extract the channel estimating information corresponding with described pilot frequency information and data message; Or by other extracting modes, only from described received signal, extract in the channel estimating information corresponding with described pilot frequency information and data message one etc.; By utilizing the mode such as channel compensation or data sequence compensation, described targeted customer's signal is carried out to channel estimation process, to obtain described channel estimating information.For example, in the time that described up channel comprises PUCCH, in step s1, time inclined to one side determining device by obtaining the received signal through PUCCH, carry out demultiplexing to described through PUCCH received signal, obtain pilot frequency information and the data message of received signal; Pilot frequency information to the described received signal in described targeted customer's signal and data message carry out respectively channel estimation process, to obtain described channel estimating information.

Fig. 4 illustrates a kind of method flow diagram for the breath that really regularly believes one side only based on uplink channel signals in accordance with a preferred embodiment of the present invention.Particularly, in step s5 ', time inclined to one side determining device detect whether meet time the believe one side only trigger condition of breath of determining described received signal; When meeting described trigger condition, in step s1 ', time inclined to one side determining device obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information; In step s2 ', time inclined to one side determining device described channel estimating information is carried out to cross correlation process by corresponding subcarrier spacing, to obtain one or more cross-correlation information; In step s3 ', time inclined to one side determining device by described one or more cross-correlation information at least one to carry out time domain cumulative, to obtain corresponding accumulation result; In step s4 ', time inclined to one side determining device described accumulation result is carried out to phase transition, breath believes one side only when corresponding with described received signal to obtain.Wherein, described step s2 ', step s3 ', step s4 ' are identical or basic identical with corresponding step shown in Fig. 3 respectively, so locate to repeat no more, and mode is by reference contained in this.

Between above steps, be constant work, at this, it will be understood by those skilled in the art that " continuing " refers to that above steps respectively in real time, or according to the mode of operation requirement of setting or adjust in real time, the obtaining of detection, channel estimating information, cross correlation process, the time domain of carrying out trigger condition are cumulative, phase transition is with obtaining of the breath that believes one side only in time etc., until time inclined to one side determining device stop obtaining with through the corresponding channel estimating information of up channel received signal.

In step s5 ', time inclined to one side determining device detect whether meet time the believe one side only trigger condition of breath of determining described received signal.Particularly, in step s5 ', time inclined to one side determining device by according to the sense cycle of system intialization or according to predetermined detection mode, time the believe one side only trigger condition of breath of described received signal is detected; Wherein, described trigger condition includes but not limited to believe one side only constantly breath excessive (exceed a timing partially threshold value) or stop carrying out PUSCH transmission and exceed certain hour threshold value etc. of initial access.When meeting described trigger condition, in step s1 ', time inclined to one side determining device obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information.Wherein, described in described obtain manner and Fig. 3, the obtain manner of step s1 is same or similar, so locate to repeat no more, and mode is by reference contained in this.

To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to be included in the present invention.Any Reference numeral in claim should be considered as limiting related claim.In addition, obviously other unit or step do not got rid of in " comprising " word, and odd number is not got rid of plural number.Multiple unit of stating in device claim or device also can be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and does not represent any specific order.

Claims (15)

1. for a method for the breath that really regularly believes one side only based on uplink channel signals, wherein, the method comprises the following steps:

A obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information;

B carries out cross correlation process to described channel estimating information by corresponding subcarrier spacing, to obtain one or more cross-correlation information;

C by described one or more cross-correlation information at least one to carry out time domain cumulative, to obtain corresponding accumulation result;

D carries out phase transition to described accumulation result, and breath believes one side only when corresponding with described received signal to obtain.

2. method according to claim 1, wherein, the method also comprises:

-according to the signal correction information of described received signal, set up or upgrade described subcarrier spacing, for carrying out cross correlation process.

3. method according to claim 1, wherein, described channel estimating information comprises described pilot tone estimated information and described data estimation information;

Wherein, described step b comprises:

-described channel estimating information is carried out to cross correlation process by corresponding subcarrier spacing, to obtain one or more cross-correlation information, wherein, described one or more cross-correlation information comprises the one or more pilot tone cross-correlation information corresponding with described pilot tone estimated information, and the one or more data cross-correlation information corresponding with described data estimation information.

4. method according to claim 3, wherein, described step c comprises:

-according to the weight information of the weight information of described pilot tone estimated information and described data estimation information, the corresponding cross-correlation information of described pilot tone estimated information and the corresponding cross-correlation information of described data estimation information are pressed to weight accumulation process.

5. according to the method described in any one in claim 1 to 4, wherein, the method also comprises:

-utilize the breath that believes one side only when described, described channel estimating information is compensated to processing.

6. according to the method described in any one in claim 1 to 5, wherein, described step a comprises:

-obtain through up channel received signal;

-from described received signal, extract corresponding targeted customer's signal, wherein, described targeted customer's signal comprises at least one in the pilot frequency information of described received signal and data message;

-described targeted customer's signal is carried out to channel estimation process, to obtain described channel estimating information, wherein, described channel estimating information comprises at least one in described pilot tone estimated information and described data estimation information, and described pilot tone estimated information and described data estimation information correspond respectively to described pilot frequency information and described data message.

7. according to the method described in any one in claim 1 to 6, wherein, the method also comprises:

-detect whether meet time the believe one side only trigger condition of breath of determining described received signal;

Wherein, described step a comprises:

-when meeting described trigger condition, obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information.

8. for a time inclined to one side determining device for the breath that really regularly believes one side only based on uplink channel signals, wherein, this device comprises:

Acquiring unit, for obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information;

Correlation unit, for described channel estimating information is carried out to cross correlation process by corresponding subcarrier spacing, to obtain one or more cross-correlation information;

Cumulative unit, for by described one or more cross-correlation information, at least one carries out time domain and adds up, to obtain corresponding accumulation result;

Converting unit, for described accumulation result is carried out to phase transition, breath believes one side only when corresponding with described received signal to obtain.

9. inclined to one side determining device time according to claim 8, wherein, this device also comprises:

Interval determining unit, for according to the signal correction information of described received signal, sets up or upgrades described subcarrier spacing, for carrying out cross correlation process.

10. inclined to one side determining device time according to claim 8, wherein, described channel estimating information comprises described pilot tone estimated information and described data estimation information;

Wherein, described correlation unit is used for:

-described channel estimating information is carried out to cross correlation process by corresponding subcarrier spacing, to obtain one or more cross-correlation information, wherein, described one or more cross-correlation information comprises the one or more pilot tone cross-correlation information corresponding with described pilot tone estimated information, and the one or more data cross-correlation information corresponding with described data estimation information.

11. inclined to one side determining devices time according to claim 10, wherein, described cumulative unit is used for:

-according to the weight information of the weight information of described pilot tone estimated information and described data estimation information, the corresponding cross-correlation information of described pilot tone estimated information and the corresponding cross-correlation information of described data estimation information are pressed to weight accumulation process.

Time inclined to one side determining device in 12. according to Claim 8 to 11 described in any one, wherein, this device also comprises:

Compensating unit, the breath that believes one side only when described for utilizing, compensates processing to described channel estimating information.

Time inclined to one side determining device in 13. according to Claim 8 to 12 described in any one, wherein, described acquiring unit is used for:

-obtain through up channel received signal;

-from described received signal, extract corresponding targeted customer's signal, wherein, described targeted customer's signal comprises at least one in the pilot frequency information of described received signal and data message;

-described targeted customer's signal is carried out to channel estimation process, to obtain described channel estimating information, wherein, described channel estimating information comprises at least one in described pilot tone estimated information and described data estimation information, and described pilot tone estimated information and described data estimation information correspond respectively to described pilot frequency information and described data message.

Method in 14. according to Claim 8 to 13 described in any one, wherein, this device also comprises:

Detecting unit, meets time the believe one side only trigger condition of breath of determining described received signal for detection of whether;

Wherein, described acquiring unit is used for:

-when meeting described trigger condition, obtain with through the corresponding channel estimating information of up channel received signal, wherein, described channel estimating information comprises at least one in the corresponding pilot tone estimated information of described received signal and data estimation information.

15. 1 kinds of receiving equipments for the breath that really regularly believes one side only based on uplink channel signals, comprise the time inclined to one side determining device as described in any one in claim 8 to 14.

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