CN106301715A - The demodulation method of AICH Acquisition Indication Channel and device - Google Patents

Abstract

The embodiment of the invention discloses demodulation method and the device of AICH Acquisition Indication Channel.Described method includes: obtains and sends data reception signal after AICH Acquisition Indication Channel；According to described reception signal, and prestore simplify the access instruction information that signature sequence determines that described reception signal includes；Wherein, described access instruction information include capture instruction information or extended acquisition instruction information, described in simplify signature sequence by standard access instruction signature sequence in set number data constitute.Present invention optimizes the demodulation techniques of existing AICH Acquisition Indication Channel, solve standard capture instruction signature sequence that existing demodulation techniques are used and the big technical problem of the memory headroom that standard capture instruction signature sequence takies.

Description

The demodulation method of AICH Acquisition Indication Channel and device

Technical field

The present embodiments relate to mobile communication technology, particularly relate to the demodulation method of a kind of AICH Acquisition Indication Channel And device.

Background technology

At WCDMA (Wideband Code Division Multiple Access, WCDMA) it is In system, AICH (Acquisition Indication Channel, AICH Acquisition Indication Channel) is down physical channel, For carrying AI (Acquisition Indication, capture instruction) or EAI (ExtendedAcquisition Indication, extended acquisition indicates).Wherein, AI Yu PRACH (Physical Random Access Channel, Physical Random Access Channel) signature sequence that sends is corresponding, EAI corresponding to E-DCH (E-DCH, Enhanced Dedicated Channel, strengthen dedicated channel) certain resource distribution, AI Yu EAI auxiliary UE (User Equipment, user terminal) completes random access procedure, indicates whether to allow UE to access.

In the prior art, in order to, in AICH, demodulate AI or EAI information, needs will pass through The reception signal of AICH carries out deficiency and excess part from rear, with the standard AI signature sequence prestored or standard EAI signature sequence is multiplied, and then finally determines AI or EAI information.

The major defect of prior art is, shared by storage standard AI signature sequence and standard EAI signature sequence Memory headroom big, further, since need to separate real part and the imaginary part receiving signal, be unfavorable for using DPS (Digital Signal Processing, Digital Signal Processing) software realizes said process.

Summary of the invention

In view of this, the embodiment of the present invention provides demodulation method and the device of a kind of AICH Acquisition Indication Channel, with excellent Change the demodulation techniques of existing AICH Acquisition Indication Channel, solve the standard AI label that existing demodulation techniques are used Name sequence and the big technical problem of the memory headroom that takies of standard EAI signature sequence.

In first aspect, embodiments provide the demodulation method of a kind of AICH Acquisition Indication Channel, including:

Obtain and send data reception signal after AICH；

According to described reception signal, and the signature sequence of simplifying prestored determines what described reception signal included Access instruction information；

Wherein, described access instruction information includes capture instruction AI information or extended acquisition instruction EAI information, Described signature sequence of simplifying is made up of the data setting number in standard access instruction signature sequence.

In second aspect, embodiments provide the demodulating equipment of a kind of AICH Acquisition Indication Channel, including:

Receive signal acquisition module, for obtaining transmission data reception signal after AICH；

Access instruction information determination module, for according to described reception signal, and prestore simplify signature sequence Row determine the access instruction information that described reception signal includes；

Wherein, described access instruction information includes capture instruction AI information or extended acquisition instruction EAI information, Described signature sequence of simplifying is made up of the data setting number in standard access instruction signature sequence.

The embodiment of the present invention according to existing standard AI signature sequence and the feature of standard EAI signature sequence, Construct and simplified signature sequence by what the data setting number in standard access instruction signature sequence were constituted, logical Cross and use this to simplify signature sequence to process by the reception signal of AICH channel, both can demodulate AI signal can also demodulate EAI signal, and the method for the embodiment of the present invention optimizes existing capture instruction letter The demodulation techniques in road, solve standard AI signature sequence and standard EAI that existing demodulation techniques are used The technical problem that memory headroom that signature sequence takies is big.

Accompanying drawing explanation

Fig. 1 is the wireless frame structure schematic diagram of a kind of AICH of prior art of the present invention；

Fig. 2 is the flow chart of the demodulation method of a kind of AICH Acquisition Indication Channel of first embodiment of the invention；

Fig. 3 is the flow chart of the demodulation method of a kind of AICH Acquisition Indication Channel of second embodiment of the invention；

Fig. 4 is the flow chart of the demodulation method of a kind of AICH Acquisition Indication Channel of third embodiment of the invention；

Fig. 5 is the structure chart of the demodulating equipment of a kind of AICH Acquisition Indication Channel of fourth embodiment of the invention.

Detailed description of the invention

In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings to the present invention Specific embodiment is described in further detail.It is understood that specific embodiment described herein is only It is only used for explaining the present invention, rather than limitation of the invention.It also should be noted that, for the ease of retouching State, accompanying drawing illustrate only part related to the present invention rather than full content.

For the ease of understanding various embodiments of the present invention, first by the signal transmission form of AICH and demodulate former Reason is summarized as follows:

As previously mentioned (background section), AICH is used for carrying AI information or EAI information, AI information With PRACH send signature sequence corresponding, EAI information corresponding to certain resource distribution of E-DCH, Both auxiliary UE complete random access procedure, indicate whether to allow UE to access.Wherein, random access procedure The specific rules followed is as follows:

When the access lead signal that UE sends is PRACH, if the AI received is 1, represents and allow Access response；If the AI received is-1, then it represents that forbid accessing response.

When the access lead signal that UE sends is E-DCH, if the AI received is 1, represents and allow to connect Entering response, relevant E-DCH resource configuration is distributed to UE and is used；If the AI received is-1, and EAI Do not configure, represent and forbid accessing response；The AI received is-1, and EAI configuration, then UE need to detect currently Which signature sequence configuration is, the configuration of this signature sequence correspondence E-DCH resource is distributed to UE and uses.

Wherein, figure 1 illustrates the wireless frame structure schematic diagram of a kind of AICH.As it is shown in figure 1, AICH The a length of 20ms of each radio frames, by 15 continuous print access slot (AS, the AccessSlot) groups repeated Become, a length of 5120chips of each access slot (chip).Each access slot is made up of two parts, a part It it is the idle component of the 1024chips continuing 8 sign bits；Another part is AI part, by 32 real numbers Value symbol a₀,a₁,…,a₃₁Composition, a_jAs following formula represents:

$a_j=\left({\mathrm{\Σ}}_{s=0}^{15}{\mathrm{AI}}_s{b}_{s,j}\right)+\mathrm{\γE}{\mathrm{AI}}_{s^{\′}}{c}_{s^{\′},j},(j=\mathrm{0,1},...,31)$

Wherein, b_s,jValue with reference to table 1, c_s‘,jValue with reference to table 2, γ is the proportionality coefficient set.Table 1 For standard AI signature sequence synopsis, table 2 is standard EAI signature sequence synopsis.

Table 1

Table 2

At receiving terminal, by the signal after AICH after equilibrium treatment or RAKE receiver, note connects The collection of letters number is d.

D=[(d_T=0)^T,(d_T=1)^T,…,(d_T=29)^T,]^T,N_data,tFor The data symbols count of time slot t；

For AICH,

For AI information, by signal and standard AI signature sequence b will be received_s,0,b_s,1,…,b_s,31Do as follows Computing, can extract and receive the AI information that signal includes, specifically comprise the following steps that

$A=\stackrel{\·\·}{A}/32;$

Wherein: 0≤s≤15, γ_AIIt is decision threshold, can be drawn by system emulation.

If it addition, UE is configured with EAI information, in addition it is also necessary to carry out EAI judgement.

For EAI information, by signal and standard EAI signature sequence c will be received_s‘,0,c_s‘,1,…,c_s‘,31Do as follows Computing, can extract and receive the EAI information that signal includes, specifically comprise the following steps that

${\stackrel{\·\·}{A}}_s^{\′}=\underset{i=0}{\overset{9}{\mathrm{\Σ}}}[\mathrm{Re}\left(d_{t,i}\right)c_{s^{\′},2i}-\mathrm{Im}\left(d_{t,i}\right)c_{s^{\′},2i+1}]+\underset{i=10}{\overset{15}{\mathrm{\Σ}}}[\mathrm{Re}\left(d_{t+1,i-10}\right)c_{s^{\′},2i}-\mathrm{Im}\left(d_{t+1,i-10}\right)c_{s^{\′},2i+1}];$

$A^{\′}=\max \left(\right|{\stackrel{\·\·}{A}}_s^{\′}\left|\right);$

$\mathrm{EAI}=\left\{\begin{array}{cc}1& A^{\&prime;}>0\\ -1& A^{\&prime;}<0\end{array}\right.;$ Wherein, 0≤s '≤15.

From the step of said extracted AI information and EAI information can it is further seen that: in order to success Demodulate AI information and EAI information, need at receiving terminal, the signature sequence in table 1 and table 2 to be carried out Storage, shared memory headroom is big；In addition it is also necessary to the deficiency and excess portion of the docking collection of letters number separates, it is unfavorable for Dsp software is used to complete above-mentioned demodulating process.

First embodiment

Fig. 2 is the flow chart of the demodulation method of a kind of AICH Acquisition Indication Channel of first embodiment of the invention, this reality The method executing example can be performed by the demodulating equipment of AICH Acquisition Indication Channel, and this device can be by hardware and/or soft The mode of part realizes, and typically can be integrated in subscriber equipment.As in figure 2 it is shown, the method for the present embodiment is concrete Including operating as follows:

210, transmission data reception signal after AICH is obtained.

In general, corresponding request data is sent to base station or to base station requests when UE passes through PRACH During certain resource of E-DCH, base station can will carry AI information or the number of EAI information by AICH According to returning to UE.

In the present embodiment, described transmission data specifically refer to what base station returned, carry AI information or EAI The data of information.

Described reception signal, refers to that described transmission data that base station sends are (superposition noise, dry by AICH Disturb and have passed through certain decline) after, the signal that UE end is received after the data set process.

Wherein, the data process of described setting may include that the reception of Rake receiver and the equal of equalizer The filtering of weighing apparatus or wave filter etc. process.

One of the present embodiment preferred embodiment in, described reception signal can by one receive to Amount d represents, wherein:

D=[(d_T=0)^T,(d_T=1)^T,…,(d_T=29)^T,]^T,N_data,tFor The data symbols count of time slot t；

For AICH,

220, according to described reception signal, and the signature sequence of simplifying prestored determines bag in described reception signal The access instruction information included.

In the present embodiment, described access instruction information specifically includes AI information or EAI information.

In the prior art, receive, in order to determine, the access instruction information that signal includes, need use table 1 Or the Standard signatures sequence in table 2, inventor is found by research, and in Tables 1 and 2, the data of storage are There is certain feature.

Wherein, as shown in table 1: b_s,0The data of (0≤s≤15) correspondence and b_s,1(0≤s≤15) are right The data answered are identical；b_s,2The data of (0≤s≤15) correspondence and b_s,3The data that (0≤s≤15) are corresponding Identical；……；b_s,30The data of (0≤s≤15) correspondence and b_s,31The data that (0≤s≤15) are corresponding Identical.That is: standard AI signature sequence b_s,0,b_s,1,…,b_s,31In even bit data b_{S, 0},b_s,2,…,b_s,30With Odd bits data b_s,1,b_s,3,…,b_s,31Identical.

As shown in Table 1 and Table 2: c_s‘,0The data of (0≤s '≤15) correspondence and b_s,0(0≤s≤15) are right The data answered are identical；c_s‘,1The data that (0≤s '≤15) is corresponding are b_s,1The data that (0≤s≤15) are corresponding Opposite number；……；c_s‘,30The data of (0≤s '≤15) correspondence and b_s,30(0≤s≤15) correspondence Data are identical；c_s‘,31The data that (0≤s '≤15) is corresponding are b_s,31The data that (0≤s≤15) are corresponding Opposite number.That is: standard AI signature sequence b_s,0, b_s,1,…,b_s,31In even bit data b_s,0,b_s,2,…,b_s,30 With standard EAI signature sequence c_s‘,0,c_s‘,1,…,c_s‘,31In even bit data c_s‘,0,c_s‘,1,…,c_s‘,30Identical；Mark Quasi-AI signature sequence b_s,0,b_s,1,…,b_{S, 31}In odd bits data b_s,1,b_s,3,…,b_s,31Sign for standard EAI Sequence c_s‘,0,c_s‘,1,…,c_s‘,31In odd bits data c_s‘,1,c_s‘,3,…,c_s‘,31Opposite number.

Based on above-mentioned data characteristics, in the present embodiment, access not in use by the standard in table 1 and table 2 Indicate signature sequence to determine and receive AI information and the EAI information that signal includes, but construct an essence Letter signature sequence represents the total data in table 1 and table 2, such as: in even bit in table 1, table Odd bits, the even bit in table 2 or the odd bits etc. in table 2, this is not limited.

One of the present embodiment preferred embodiment in, described in simplify signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15 Specifically by standard AI signature sequence b_s,0,b_s,1,…,b_s,31In even bit b_s,0,b_s,2,…,b_s,30Constitute, 0≤s '≤15,0≤s≤15, wherein, described in simplify in signature sequence the data of storage as shown in table 3.

Table 3

The embodiment of the present invention according to existing standard AI signature sequence and the feature of standard EAI signature sequence, Construct and simplified signature sequence by what the data setting number in standard access instruction signature sequence were constituted, logical Cross and use this to simplify signature sequence to process by the reception signal of AICH channel, both can demodulate AI signal can also demodulate EAI signal, and the method for the embodiment of the present invention optimizes existing capture instruction letter The demodulation techniques in road, solve standard AI signature sequence and standard EAI that existing demodulation techniques are used The technical problem that memory headroom that signature sequence takies is big.

Second embodiment

Fig. 3 is the flow chart of the demodulation method of a kind of AICH Acquisition Indication Channel of second embodiment of the invention.This reality Execute example to be optimized based on above-described embodiment, in the present embodiment, access instruction Advance data quality by described For AI information；

Accordingly, will according to described reception signal, and prestore simplify signature sequence determine described receive letter Number AI Advance data quality included is:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15And equation below, Calculate the first intermediate quantity

$\stackrel{\&CenterDot;\&CenterDot;}{A}=({\mathrm{\&Sigma;}}_{i=0}^9[\mathrm{Re}\left(d_{t,i}\right)b_{s^{\&prime;},i}+\mathrm{Im}\left(d_{t,i}\right)b_{s^{\&prime;},i}]+{\mathrm{\&Sigma;}}_{i=10}^{15}[\mathrm{Re}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}+\mathrm{Im}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}]),$ $0\&le;s^{\&prime;}\&le;15;$ According to describedAnd formula:Calculate the second intermediate quantity A；According to described A with And formula:Determine the AI information that described reception signal d includes；Wherein, γ_AIFor default decision threshold.

Accordingly, the method for the present embodiment includes:

310, transmission data reception signal after AICH is obtained.

320, according to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15And it is public as follows Formula, calculates the first intermediate quantity

$\begin{array}{c}\stackrel{\&CenterDot;\&CenterDot;}{A}=\left({\mathrm{\&Sigma;}}_{i=0}^9[\mathrm{Re}\left(d_{t,i}\right)b_{s^{\&prime;},i}+\mathrm{Im}\left(d_{t,i}\right)b_{s^{\&prime;},i}\right]+{\mathrm{\&Sigma;}}_{i=10}^{15}[\mathrm{Re}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}+\mathrm{Im}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}]),\\ 0\&le;s^{\&prime;}\&le;15;\end{array}$

In the present embodiment, signature sequence b is simplified described in_s‘,0,b_s‘,1,…,b_s‘,15Specifically by standard AI signature sequence Row b_s,0,b_s,1,…,b_s,31In even bit b_s,0,b_s,2,…,b_s,30Constitute, 0≤s '≤15,0≤s≤15.

As it was previously stated, prior art is using standard AI signature sequence to calculate the first intermediate quantityTime, use down State formula:

$\stackrel{\&CenterDot;\&CenterDot;}{A}=\underset{i=0}{\overset{9}{\mathrm{\&Sigma;}}}[\mathrm{Re}\left(d_{t,i}\right)b_{s,2i}+\mathrm{Im}\left(d_{t,i}\right)b_{s,2i+1}]+\underset{i=10}{\overset{15}{\mathrm{\&Sigma;}}}[\mathrm{Re}\left(d_{t+1,i-10}\right)b_{s,2i}+\mathrm{Im}\left(d_{t+1,i-10}\right)b_{s,2i+1}]$

Due to the b in standard AI signature sequence_s,0,b_s,1,…,b_s,31In even bit data b_s,0,b_s,2,…,b_s,30 With odd bits data b_s,1,b_s,3,…,b_s,31Identical.Therefore according only to simplifying signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15, i.e. can get above-mentionedValue, it may be assumed that

$\begin{array}{c}\stackrel{\&CenterDot;\&CenterDot;}{A}=\left({\mathrm{\&Sigma;}}_{i=0}^9[\mathrm{Re}\left(d_{t,i}\right)b_{s^{\&prime;},i}+\mathrm{Im}\left(d_{t,i}\right)b_{s^{\&prime;},i}\right]+{\mathrm{\&Sigma;}}_{i=10}^{15}[\mathrm{Re}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}+\mathrm{Im}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}]),\\ 0\&le;s^{\&prime;}\&le;1.\end{array}$

330, according to describedAnd formula:Calculate the second intermediate quantity A；

340, according to described A and formula:Determine described reception signal d The AI information included.

In the present embodiment, described γ_AIFor default decision threshold, can be obtained by system emulation.

The embodiment of the present invention, according to the feature of existing standard AI signature sequence, constructs and is signed by standard AI What the data setting number in sequence were constituted simplifies signature sequence, by using this to simplify signature sequence to logical The reception signal crossing AICH channel processes, and then demodulates AI signal.Optimize existing capture to refer to Showing the demodulation techniques of channel, solve that the standard AI signature sequence that existing demodulation techniques are used takies is interior Deposit the technical problem that space is big.

On the basis of the various embodiments described above, Advance data quality is indicated to be EAI information described access further；

Accordingly, will according to described reception signal, and prestore simplify signature sequence, determine described reception The EAI Advance data quality that signal includes is:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15And equation below, Calculate the 3rd intermediate quantity

$\begin{array}{c}{\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}=\left({\mathrm{\&Sigma;}}_{i=0}^9[\mathrm{Re}\left(d_{t,i}\right)b_{s^{\&prime;},i}+\mathrm{Im}\left(d_{t,i}\right)b_{s^{\&prime;},i}\right]+{\mathrm{\&Sigma;}}_{i=10}^{15}[\mathrm{Re}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}-\mathrm{Im}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}]),\\ \end{array}$ $0\&le;s^{\&prime;}\&le;15;$ According to describedAnd formula: $\mathrm{EAI}=\left\{\begin{array}{cc}1& A^{\&prime;}>0\\ -1& A^{\&prime;}<0\end{array}\right.,$ Determine in described reception signal d Including EAI information, wherein, $A^{\&prime;}=\max \left(\right|{\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}\left|\right).$

Similar, due to standard AI signature sequence b_s,0,b_s,1,…,b_s,31In even bit data b_s,2,…,b_s,30With standard EAI signature sequence c_s‘,0,c_s‘,1,…,c_s‘,31In even bit data c_s‘,0,c_s‘,1..., c_s‘,30Identical；Standard AI signature sequence b_s,0,b_s,1,…,b_s,31In odd bits data b_s,1,b_s,3,…,b_s,31For standard EAI signature sequence c_s‘,0,c_s‘,1,…,c_s‘,31In odd bits data c_s‘,1,c_s‘,3,…,c_s‘,31Opposite number.

Therefore, it can the 3rd intermediate quantityComputing formula abbreviation be following form:

$\begin{array}{c}{\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}=\left({\mathrm{\&Sigma;}}_{i=0}^9[\mathrm{Re}\left(d_{t,i}\right)b_{s^{\&prime;},i}-\mathrm{Im}\left(d_{t,i}\right)b_{s^{\&prime;},i}\right]+{\mathrm{\&Sigma;}}_{i=10}^{15}[\mathrm{Re}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}-\mathrm{Im}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}]),\\ 0\&le;s^{\&prime;}\&le;15.\end{array}$

In various embodiments of the present invention, by simplifying signature sequence to passing through AICH shown in use table 3 The reception signal of channel processes, and then demodulates AI signal or the technological means of EAI signal, UE end is no longer necessary to preservation table 1 and these two tables of table 2 and only preservation table 3 so that memory space saving To original 1/4.

The method of the second embodiment is only to existing AI signature sequence and EAI signature sequence Letter so that the saving that the memory space of UE end obtains, but unactual to AI information or EAI information Demodulation mode be modified, that is, still need to dock collection of letters d carry out deficiency and excess part from, could be the most true Making AI information and EAI information, the benefit so arranged is the demodulation side without changing existing UE end Formula, it is achieved simple, but still it is unfavorable for using dsp software to complete above-mentioned demodulating process.

3rd embodiment

Fig. 4 is the flow chart of the demodulation method of a kind of AICH Acquisition Indication Channel of third embodiment of the invention.This reality Execute example to be optimized based on above-described embodiment, in the present embodiment, preferably access instruction letter by described Breath is optimized for AI information；

Accordingly, will according to described reception signal, and prestore simplify signature sequence determine described receive letter Number AI Advance data quality included is:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15And equation below, Calculate the first intermediate quantity

$\stackrel{\&CenterDot;\&CenterDot;}{A}=({\mathrm{\&Sigma;}}_{i=0}^9{d}_{t,i}{b}_{s^{\&prime;},i}+{\mathrm{\&Sigma;}}_{i=10}^{15}{d}_{t+1,i-10}{b}_{s^{\&prime;},i}),0\&le;s^{\&prime;}\&le;15;$ According to describedAnd formula:Calculate the second intermediate quantity A；According to described A and formula:Determine the AI information that described reception signal d includes；Wherein, γ_AIFor in advance If decision threshold.

Accordingly, the method for the present embodiment includes:

410, transmission data reception signal after AICH is obtained.

420, according to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15And it is public as follows Formula, calculates the first intermediate quantity

$\stackrel{\&CenterDot;\&CenterDot;}{A}=({\mathrm{\&Sigma;}}_{i=0}^9{d}_{t,i}{b}_{s^{\&prime;},i}+{\mathrm{\&Sigma;}}_{i=10}^{15}{d}_{t+1,i-10}{b}_{s^{\&prime;},i}),0\&le;s^{\&prime;}\&le;15.$

The present embodiment is in a second embodimentOn the basis of computing formula, to d_t,iDeficiency and excess portion merged, By in the present embodimentComputing formula it can be seen that obtain at UE and receive after signal d, it is no longer necessary to Carry out deficiency and excess part from, only according to the d of plural form_t,iI.e. can get the first intermediate quantity

430, according to describedAnd formula:Calculate the second intermediate quantity A.

440, according to described A and formula:Determine described reception signal d The AI information included；Wherein, γ_AIFor default decision threshold.

On the basis of the embodiment of the present invention saves memory space, the reception signal of plural form is directly used to transport Calculating, be not required to separate real part imaginary part and operate respectively, it is the most convenient to realize for dsp software, the most permissible Convenient some existing DSP of use instruct, and compiler can realize parallel processing the most accordingly to a greater extent.

On the basis of the various embodiments described above, Advance data quality is indicated to be EAI information described access further；

Accordingly, will according to described reception signal, and prestore simplify signature sequence, determine described reception The EAI Advance data quality that signal includes is:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15And equation below, Calculate the 3rd intermediate quantity

${\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}=({\mathrm{\&Sigma;}}_{i=0}^9\mathrm{conj}\left(d_{t,i}\right)b_{s^{\&prime;},i}+{\mathrm{\&Sigma;}}_{i=10}^{15}\mathrm{conj}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}),0\&le;s^{\&prime;}\&le;15;$

According to describedAnd formula:Calculate the 4th intermediate quantity A '_s；

According to described A '_sAnd formula: $\mathrm{EAI}=\left\{\begin{array}{cc}1& A^{\&prime;}>0\\ -1& A^{\&prime;}<0\end{array}\right.,$ Determine what described reception signal d included EAI information, wherein, A '=max (| A '_s|)。

4th embodiment

Fig. 5 is the structure chart of the demodulating equipment of a kind of AICH Acquisition Indication Channel of fourth embodiment of the invention.Such as Fig. 5 Shown in, described device includes:

Receive signal acquisition module 51, for obtaining transmission data reception signal after AICH.

Access instruction information determination module 52, for according to described reception signal, and prestore simplify signature Sequence determines the access instruction information that described reception signal includes.

Wherein, described access instruction information includes capture instruction AI information or extended acquisition instruction EAI information, Described signature sequence of simplifying is made up of the data setting number in standard access instruction signature sequence.

The embodiment of the present invention according to existing standard AI signature sequence and the feature of standard EAI signature sequence, Construct and simplified signature sequence by what the data setting number in standard access instruction signature sequence were constituted, logical Cross and use this to simplify signature sequence to process by the reception signal of AICH channel, both can demodulate AI signal can also demodulate EAI signal, and the method for the embodiment of the present invention optimizes existing capture instruction letter The demodulation techniques in road, solve standard AI signature sequence and standard EAI that existing demodulation techniques are used The technical problem that memory headroom that signature sequence takies is big.

On the basis of the various embodiments described above, described reception signal d specifically can be represented by following form:

D=[(d_T=0)^T,(d_T=1)^T,…,(d_T=29)^T,]^T,N_data,tFor The data symbols count of time slot t；

Described simplify signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15Specifically by standard AI signature sequence b_s,0,b_s,1,…,b_s,31In even bit b_s,0,b_s,2,…,b_s,30Constitute, 0≤s '≤15,0≤s≤15.

On the basis of the various embodiments described above, described access instruction information can be AI information；

The described instruction information determination module that accesses specifically may be used for:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15And equation below, Calculate the first intermediate quantity

$\begin{array}{c}\stackrel{\&CenterDot;\&CenterDot;}{A}=\left({\mathrm{\&Sigma;}}_{i=0}^9[\mathrm{Re}\left(d_{t,i}\right)b_{s^{\&prime;},i}+\mathrm{Im}\left(d_{t,i}\right)b_{s^{\&prime;},i}\right]+{\mathrm{\&Sigma;}}_{i=10}^{15}[\mathrm{Re}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}+\mathrm{Im}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}]),\\ 0\&le;s^{\&prime;}\&le;15;\end{array}$

According to describedAnd formula:Calculate the second intermediate quantity A；

According to described A and formula:Determine that described reception signal d includes AI information；Wherein, γ_AIFor default decision threshold.

On the basis of the various embodiments described above, described access instruction information can be AI information；

The described instruction information determination module that accesses specifically may be used for:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15And equation below, Calculate the first intermediate quantity

$\stackrel{\&CenterDot;\&CenterDot;}{A}=({\mathrm{\&Sigma;}}_{i=0}^9{d}_{t,i}{b}_{s^{\&prime;},i}+{\mathrm{\&Sigma;}}_{i=10}^{15}{d}_{t+1,i-10}{b}_{s^{\&prime;},i}),0\&le;s^{\&prime;}\&le;15;$

According to describedAnd formula:Calculate the second intermediate quantity A；

According to described A and formula:Determine that described reception signal d includes AI information；Wherein, γ_AIFor default decision threshold.

On the basis of the various embodiments described above, described access instruction information can be EAI information；

The described instruction information determination module that accesses specifically may be used for:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15And equation below, Calculate the 3rd intermediate quantity

$\begin{array}{c}{\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}=\left({\mathrm{\&Sigma;}}_{i=0}^9[\mathrm{Re}\left(d_{t,i}\right)b_{s^{\&prime;},i}-\mathrm{Im}\left(d_{t,i}\right)b_{s^{\&prime;},i}\right]+{\mathrm{\&Sigma;}}_{i=10}^{15}[\mathrm{Re}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}-\mathrm{Im}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}]),\\ 0\&le;s^{\&prime;}\&le;15;\end{array}$

According to describedAnd formula: $\mathrm{EAI}=\left\{\begin{array}{cc}1& A^{\&prime;}>0\\ -1& A^{\&prime;}<0\end{array}\right.,$ Determine what described reception signal d included EAI information, wherein, $A^{\&prime;}=\max \left(\right|{\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}\left|\right).$

On the basis of the various embodiments described above, described access instruction information can be EAI information；

The described instruction information determination module that accesses specifically may be used for:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,…,b_s‘,15And equation below, Calculate the 3rd intermediate quantity

${\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}=({\mathrm{\&Sigma;}}_{i=0}^9\mathrm{conj}\left(d_{t,i}\right)b_{s^{\&prime;},i}+{\mathrm{\&Sigma;}}_{i=10}^{15}\mathrm{conj}\left(d_{t+1,i-10}\right)b_{s^{\&prime;},i}),0\&le;s^{\&prime;}\&le;15;$

According to describedAnd formula: $A_s^{\&prime;}=(\mathrm{Re}\left({\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}\right)+\mathrm{Im}\left({\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}\right)),$ Calculate the 4th intermediate quantity

According to described A '_sAnd formula: $\mathrm{EAI}=\left\{\begin{array}{cc}1& A^{\&prime;}>0\\ -1& A^{\&prime;}<0\end{array}\right.,$ Determine what described reception signal d included EAI information, wherein, A '=max (| A '_s|)。

It is the most real that the demodulating equipment of the AICH Acquisition Indication Channel that the embodiment of the present invention is provided can be used for performing the present invention Execute the demodulation method of the AICH Acquisition Indication Channel that example provides, possess corresponding functional module, it is achieved identical is useful Effect.

Obviously, it will be understood by those skilled in the art that each module or each step of the above-mentioned present invention can be led to Cross subscriber equipment as above to implement.Alternatively, the embodiment of the present invention can be able to perform with computer installation Program realize, perform such that it is able to be stored in storing in device by processor, described journey Sequence can be stored in a kind of computer-readable recording medium, and storage medium mentioned above can be read-only depositing Reservoir, disk or CD etc.；Or they to be fabricated to respectively each integrated circuit modules, or by them In multiple modules or step be fabricated to single integrated circuit module and realize.So, the present invention is not restricted to The combination of any specific hardware and software.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for this area skill For art personnel, the present invention can have various change and change.All institutes within spirit and principles of the present invention Any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.

Claims (12)

1. the demodulation method of an AICH Acquisition Indication Channel AICH, it is characterised in that including:

Obtain and send data reception signal after AICH；

According to described reception signal, and the signature sequence of simplifying prestored determines what described reception signal included Access instruction information；

Wherein, described access instruction information includes capture instruction AI information or extended acquisition instruction EAI letter Breath, described in simplify signature sequence by standard access instruction signature sequence in set number data constitute.

Method the most according to claim 1, it is characterised in that described reception signal d is especially by such as Lower form represents:

D=[(d_T=0)^T, (d_T=1)^T..., (d_T=29)^T,]^T,N_{Data, t}For The data symbols count of time slot t；

Described simplify signature sequence b_{S ', 0},b_{S ', 1},...,b_{S ', 15}Specifically by standard AI signature sequence b_s,0,b_s,1,...,b_s,31In even bit b_s,0,b_s,2,...,b_s,30Constitute, 0≤s '≤15,0≤s≤15.

Method the most according to claim 2, it is characterised in that described access instruction information is AI letter Breath；

According to described reception signal, and the signature sequence of simplifying prestored determines what described reception signal included AI information includes:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,...,b_s‘,15And equation below, Calculate the first intermediate quantity

According to describedAnd formula:Calculate the second intermediate quantity A；

According to described A and formula:Determine in described reception signal d and wrap The AI information included；Wherein, γ_AIFor default decision threshold.

Method the most according to claim 2, it is characterised in that described access instruction information is AI letter Breath；

According to described reception signal, and the signature sequence of simplifying prestored determines what described reception signal included AI information includes:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,...,b_s‘,15And equation below, Calculate the first intermediate quantity

According to describedAnd formula: $A=(\mathrm{Re}\left(\stackrel{\&CenterDot;\&CenterDot;}{A}\right)+\mathrm{Im}\left(\stackrel{\&CenterDot;\&CenterDot;}{A}\right))/32,$ Calculate the second intermediate quantity A；

According to described A and formula:Determine in described reception signal d and wrap The AI information included；Wherein, γ_AIFor default decision threshold.

Method the most according to claim 2, it is characterised in that described access instruction information is EAI Information；

According to described reception signal, and prestore simplify signature sequence, determine that described reception signal includes EAI information include:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,...,b_s‘,15And equation below, Calculate the 3rd intermediate quantity

According to describedAnd formula:Determine what described reception signal d included EAI information, wherein,

Method the most according to claim 2, it is characterised in that described access instruction information is EAI Information；

According to described reception signal, and prestore simplify signature sequence, determine that described reception signal includes EAI information include:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,...,b_s‘,15And equation below, Calculate the 3rd intermediate quantity

According to describedAnd formula: $A_s^{,}=(\mathrm{Re}\left({\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}\right)+\mathrm{Im}\left({\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}\right)),$ Calculate the 4th intermediate quantity A '_s；

According to described A '_sAnd formula:Determine what described reception signal d included EAI information, wherein, A '=max (| A '_s|)。

7. the demodulating equipment of an AICH Acquisition Indication Channel AICH, it is characterised in that including:

Receive signal acquisition module, for obtaining transmission data reception signal after AICH；

Access instruction information determination module, for according to described reception signal, and prestore simplify signature sequence Row determine the access instruction information that described reception signal includes；

Wherein, described access instruction information includes capture instruction AI information or extended acquisition instruction EAI letter Breath, described in simplify signature sequence by standard access instruction signature sequence in set number data constitute.

Device the most according to claim 7, it is characterised in that described reception signal d is especially by such as Lower form represents:

D=[(d_T=0)^T,(d_T=1)^T,...,(d_T=29)^T,]^T,N_data,tFor The data symbols count of time slot t；

Described simplify signature sequence b_s‘,0,b_s‘,1,...,b_s‘,15Specifically by standard AI signature sequence b_s,0,b_s,1,...,b_s,31In even bit b_s,0,b_s,2,...,b_s,30Constitute, 0≤s '≤15,0≤s≤15.

Device the most according to claim 8, it is characterised in that described access instruction information is AI letter Breath；

Described access instruction information determination module specifically for:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,...,b_s‘,15And equation below, Calculate the first intermediate quantity

According to describedAnd formula:Calculate the second intermediate quantity A；

According to described A and formula:Determine in described reception signal d and wrap The AI information included；Wherein, γ_AIFor default decision threshold.

Device the most according to claim 8, it is characterised in that described access instruction information is AI Information；

Described access instruction information determination module specifically for:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,...,b_s‘,15And equation below, Calculate the first intermediate quantity

According to describedAnd formula: $A=(\mathrm{Re}\left(\stackrel{\&CenterDot;\&CenterDot;}{A}\right)+\mathrm{Im}\left(\stackrel{\&CenterDot;\&CenterDot;}{A}\right))/32,$ Calculate the second intermediate quantity A；

According to described A and formula:Determine in described reception signal d and wrap The AI information included；Wherein, γ_AIFor default decision threshold.

11. devices according to claim 8, it is characterised in that described access instruction information is EAI Information；

Described access instruction information determination module specifically for:

According to described reception signal d, described in simplify signature sequence b_s‘,0,b_s‘,1,...,b_s‘,15And equation below, Calculate the 3rd intermediate quantity

According to describedAnd formula:Determine what described reception signal d included EAI information, wherein,

12. devices according to claim 8, it is characterised in that described access instruction information is EAI Information；

Described access instruction information determination module specifically for:

According to described reception signal d, described in simplify signature sequence b_s‘,0, b_s‘,1..., b_s‘,15And equation below, Calculate the 3rd intermediate quantity

According to describedAnd formula: $A_s^{,}=(\mathrm{Re}\left({\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}\right)+\mathrm{Im}\left({\stackrel{\&CenterDot;\&CenterDot;}{A}}_s^{\&prime;}\right)),$ Calculate the 4th intermediate quantity

According to described A '_sAnd formula:Determine what described reception signal d included EAI information, wherein, A '=max (| A '_s|)。