CN102026278B - Method and device for detecting E-HICH - Google Patents

Abstract

The embodiments of the present invention disclose a method for detecting E-DCH Hybrid Automatic Repeat Request Indicator Channel (E-HICH), comprising the following steps of: performing a combined detection on the reception signals in which the subframe and time slot of scheduled E-HICH are located, and obtaining an estimate of the symbol sequence which is loaded on the scheduled E-HICH with the subframe and the time slot; demodulating and descrambling the estimate of the symbol sequence obtained, then obtaining a bit sequence after the demodulation and descrambling; and determining the value of an ACK/NACK bit which is transmitted to the user on the scheduled E-HICH according to the signature sequence corresponding to the user and the bit sequence obtained by demodulating and descrambling. The embodiments of the present invention also disclose another method and two devices for detecting E-HICH. By adopting the methods and devices, an ACK/NACK bit or the TPC&SS instruction which is sent to a determinate UE can be extracted from the signals transmitted on the E-HICH.

Description

The detection method of E-HICH and device

Technical field

The present invention relates to mobile communication technology, refer in particular to detection method and the device of a kind of E-DCH mixed automatic retransmission request indicating channel (E-HICH, E-DCH Hybrid Automatic Repeat reQuest Indicator Channel).

Background technology

In order to adapt to the demand of mobile network's high speed data service, TD SDMA (TD-SCDMA, Time Division Synchronous Code Division Multiple Access) system introduced high speed uplink packet access (HSUPA, High Speed Uplink Packet Access) technology, this technology can improve uplink throughput and up peak rate greatly.And in HSUPA technology, introduce the down physical channel that one is called E-DCH mixed automatic retransmission request indicating channel (E-HICH).This channel generally can be divided into two classes: the E-HICH of scheduling and non-scheduled E-HICH.

Wherein, the E-HICH of scheduling can be used for the ACK/NACK bit (being data reception acknowledgement bit) of the physical uplink channel (E-PUCH) of the enhancing dedicated channel of transmitting and scheduling, and the value of this data reception acknowledgement bit is: confirm (ACK) or non-confirmation (NACK).For example, when the authorized E-PUCH transmission data block by scheduling of user terminal (UE) is to transmitter (NODEB) time, the data that the upper UE of E-PUCH of NODEB receiving scheduling sends.If data are correctly received, NODEB will send to this UE by ACK bit by the E-HICH of scheduling.If data are received by mistake, NODEB will send to this UE by NACK bit by the E-HICH of scheduling.On the E-HICH of a scheduling in a subframe, can send the ACK/NACK bit of multiple UE simultaneously.For UE, after it sends the data to NODEB by the E-PUCH of scheduling, UE can receive the ACK/NACK bit that sends to it on the E-HICH of scheduling.

Non-scheduled E-HICH can be used for transmitting data receiving state and the control command of non-scheduled E-PUCH.Wherein, whether data receiving state can represent by ACK/NACK bit, be used to indicate UE and send to the data block of NODEB to be correctly received by non-scheduled E-PUCH; Described control command (being TPC & SS instruction) comprises transmitting power control (TPC) instruction and simultaneous bias (SS) instruction.Described TPC instruction can be used for the through-put power of the E-PUCH to UE to be controlled, and described SS instruction can be used for the transmission lead of the E-PUCH to UE and controls.In the time carrying out transfer of data, UE may be awarded non-scheduled E-PUCH.Now, UE can send data block to NODEB by this authorized non-scheduled E-PUCH.If data are correctly received, NODEB sends to this UE by the E-HICH by non-scheduled by ACK bit.If data are received by mistake, NODEB sends to this UE by the E-HICH by non-scheduled by NACK bit.Meanwhile, NODEB receives after data at the E-PUCH by non-scheduled, also can send by non-scheduled E-HICH the TPC & SS instruction of E-PUCH to UE.Method about the generation of TPC & SS instruction can, with reference to pertinent literature, repeat no more here.On a non-scheduled E-HICH in a subframe, can send ACK/NACK bit and the TPC & SS instruction of multiple UE simultaneously.For UE, after it sends the data to NODEB by non-scheduled E-PUCH, UE can receive the ACK/NACK bit and the TPC & SS instruction that send to it on non-scheduled E-HICH.

Due on the E-HICH of same scheduling, can send the ACK/NACK bit of multiple UE simultaneously; And on same non-scheduled E-HICH, can send ACK/NACK bit and the TPC & SS instruction of multiple UE simultaneously.Therefore, the signal of the upper carrying of E-HICH is the stack that sends to the signal of multiple UE.

And in the prior art, any one down channel only carries the signal of a UE.Therefore, the detection of the upper signal of E-HICH must be different from the detection to any one down channel of the prior art.So, in prior art, also cannot provide the detection method of specifically and effectively carrying out E-HICH, thereby in the signal that cannot transmit, extract the ACK/NACK bit or the TPC & SS instruction that send to a definite UE from E-HICH.

Summary of the invention

In view of this, the main purpose of the embodiment of the present invention is to provide detection method and the device of a kind of E-HICH, thereby in the signal that can transmit from E-HICH, extracts the ACK/NAC bit or the TPC & SS instruction that send to a definite UE.

For achieving the above object, the technical scheme in the embodiment of the present invention is achieved in that

A detection method of E-HICH, the method comprises:

The reception signal of subframe place, E-HICH place time slot to scheduling carries out joint-detection, obtains the estimation of the symbol sebolic addressing that this time slot of this subframe carries on the E-HICH of this scheduling;

The estimation of obtained symbol sebolic addressing is carried out to demodulation and disturb, obtain the bit sequence after demodulation is disturbed;

Bit sequence after disturbing according to the signature sequence corresponding with user and described demodulation, determines the value of the ACK/NACK bit that is transferred to this user on the E-HICH of this scheduling.

Describedly the estimation of obtained symbol sebolic addressing is carried out to demodulation disturb, the bit sequence obtaining after demodulation is disturbed comprises:

Adopt Quadrature Phase Shift Keying to carry out demodulation to the estimation of obtained symbol sebolic addressing and disturb, obtain the bit sequence after demodulation is disturbed.

The value of described ACK/NACK bit is: confirm (ACK) or non-confirmation (NACK).

Bit sequence after the signature sequence that described basis is corresponding with user and described demodulation are disturbed, determine that the value of the ACK/NACK bit that is transferred to this user on the E-HICH of this scheduling comprises:

The described signature sequence corresponding with user carried out to the modulation of two-phase phase shift keying, obtain the first symbol sebolic addressing;

Delete rear four bits of first data field in the bit sequence after described demodulation is disturbed and front four bits of second data field, obtain second symbol sequence;

Calculate the first correlation according to described the first symbol sebolic addressing and second symbol sequence;

Determine the value of the ACK/NACK bit that is transferred to this user on the E-HICH of this scheduling according to described the first correlation.

Described the described signature sequence corresponding with user carried out to the modulation of two-phase phase shift keying, obtains the first symbol sebolic addressing and comprise:

If the described signature sequence corresponding with user is b (n), n=1,2 ..., L _signature=80; Wherein, described L _signaturerepresent the length of described signature sequence;

Described b (n) is carried out to the modulation of two-phase phase shift keying, obtains described the first symbol sebolic addressing:

$b^{\′}\left(n\right)=\left\{\begin{array}{c}1,b\left(n\right)=1\\ -1,b\left(n\right)=0\end{array}\right.,n=\mathrm{1,2},\·\·\·,L_{\mathrm{Signature}}=80.$

Front four bits of rear four bits of first data field in the bit sequence after the described demodulation of described deletion is disturbed and second data field, obtain second symbol sequence and comprise:

If the bit sequence after described demodulation is disturbed is $\hat{b}(i,n),n=\mathrm{1,2},\·\·\·,2L_{\mathrm{symbol}};$ Wherein, described L _symbolrepresent the number of the symbol of each data field carrying;

Delete rear four bits of first data field in the bit sequence after described demodulation is disturbed and front four bits of second data field, obtain described second symbol sequence: $\stackrel{\‾}{b}\left(n\right)=\left\{\begin{array}{c}\hat{b}(1,n),n=\mathrm{1,2},\·\·\·,40\\ \hat{b}(2,n-36),n=\mathrm{41,42},\·\·\·,80\end{array}\right..$

In the time calculating the first correlation according to described the first symbol sebolic addressing and second symbol sequence, described the first correlation calculates according to following formula:

$x=\underset{n=1}{\overset{80}{\mathrm{\Σ}}}{b}^{\′}\left(n\right)\stackrel{\‾}{b}\left(n\right)$

Wherein, x is described the first correlation, and b ' is (n) described the first symbol sebolic addressing, and b (n) is described second symbol sequence, and n is the number of the bit of b ' (n) and in b (n).

Describedly determine that according to described the first correlation the value of the ACK/NACK bit that is transferred to this user on the E-HICH of this scheduling comprises:

In the time that described the first correlation is more than or equal to 0, the value that is transferred to this user's ACK/NACK bit on the E-HICH of this scheduling is ACK;

In the time that described the first correlation is less than 0, the value that is transferred to this user's ACK/NACK bit on the E-HICH of this scheduling is NACK.

The detection method that a kind of E-HICH is also provided in embodiments of the invention, the method comprises:

Reception signal to non-scheduled subframe place, E-HICH place time slot carries out joint-detection, obtains the estimation of the symbol sebolic addressing that this time slot of this subframe carries on this non-scheduled E-HICH;

The estimation of obtained symbol sebolic addressing is carried out to demodulation and disturb, obtain the bit sequence after demodulation is disturbed;

Bit sequence after disturbing according to the signature sequence group corresponding with user and described demodulation, determines the value of ACK/NACK bit and the value of control command that on this non-scheduled E-HICH, are transferred to this user.

Describedly the estimation of obtained symbol sebolic addressing is carried out to demodulation disturb, the bit sequence obtaining after demodulation is disturbed comprises:

Adopt Quadrature Phase Shift Keying to carry out demodulation to the estimation of obtained symbol sebolic addressing and disturb, obtain the bit sequence after demodulation is disturbed.

The value of described ACK/NACK bit is: confirm (ACK) or non-confirmation (NACK).

Described control command comprises: transmitting power control (TPC) instruction and simultaneous bias (SS) instruction.

The described signature sequence group corresponding with user comprises:

For sending a signature sequence of ACK/NACK bit, and for sending three signature sequences of TPC instruction and SS instruction.

Bit sequence after the signature sequence group that described basis is corresponding with user and described demodulation are disturbed, determine that the value of ACK/NACK bit and the value of control command that on this non-scheduled E-HICH, are transferred to this user comprise:

Carry out the modulation of two-phase phase shift keying to described for sending the signature sequence of ACK/NACK bit, obtain the 3rd symbol sebolic addressing;

Carry out respectively the modulation of two-phase phase shift keying to described for three signature sequences that send TPC instruction and SS instruction, obtain the 4th symbol sebolic addressing, the 5th symbol sebolic addressing and the 6th symbol sebolic addressing;

Delete rear four bits of first data field in the bit sequence after described demodulation is disturbed and front four bits of second data field, obtain the 7th symbol sebolic addressing;

Calculate the second correlation according to described the 3rd symbol sebolic addressing and the 7th symbol sebolic addressing;

Determine the value of the ACK/NACK bit that is transferred to this user on the E-HICH of non-this scheduling according to described the second correlation;

Calculate third phase pass value according to described the 4th symbol sebolic addressing and the 7th symbol sebolic addressing;

Calculate the 4th correlation according to described the 5th symbol sebolic addressing and the 7th symbol sebolic addressing;

Calculate the 5th correlation according to described the 6th symbol sebolic addressing and the 7th symbol sebolic addressing;

Determine according to described third phase pass value, the 4th correlation and the 5th correlation the value that is transferred to this user's control command on this non-scheduled E-HICH.

Describedly carry out the modulation of two-phase phase shift keying to described for sending the signature sequence of ACK/NACK bit, obtain the 3rd symbol sebolic addressing and comprise:

Be b (n) if described for sending the signature sequence of ACK/NACK bit, n=1,2 ..., L _signature=80; Wherein, described L _signaturerepresent the length of described signature sequence;

Described b (n) is carried out to the modulation of two-phase phase shift keying, obtains described the 3rd symbol sebolic addressing:

$b^{\′}\left(n\right)=\left\{\begin{array}{c}1,b\left(n\right)=1\\ -1,b\left(n\right)=0\end{array}\right.,n=\mathrm{1,2},...,L_{\mathrm{Signature}}=80.$

Front four bits of rear four bits of first data field in the bit sequence after the described demodulation of described deletion is disturbed and second data field, obtain the 7th symbol sebolic addressing and comprise:

If the bit sequence after described demodulation is disturbed is

n=1,2 ..., 2L _symbol; Wherein, described L _symbolrepresent the number of the symbol of each data field carrying;

Delete rear four bits of first data field in the bit sequence after described demodulation is disturbed and front four bits of second data field, obtain described the 7th symbol sebolic addressing: $\stackrel{\‾}{b}\left(n\right)=\left\{\begin{array}{c}\hat{b}(1,n)n=-\mathrm{1,2},...,40\\ \hat{b}(2,n-36),n=\mathrm{41,42},...,80\end{array}\right..$

In the time calculating the second correlation according to described the 3rd symbol sebolic addressing and the 7th symbol sebolic addressing, described the second correlation calculates according to following formula:

$x^{\′}=\underset{n=1}{\overset{80}{\mathrm{\Σ}}}{b}^{\′}\left(n\right)\stackrel{\‾}{b}\left(n\right)$

Wherein, x ' is described the second correlation, and b ' is (n) described the 3rd symbol sebolic addressing, for described the 7th symbol sebolic addressing, n be b ' (n) and in the number of bit.

Describedly determine that according to described the second correlation the value that is transferred to this user's ACK/NACK bit on this non-scheduled E-HICH comprises:

In the time that described the second correlation is more than or equal to 0, the value that is transferred to this user's ACK/NACK bit on this non-scheduled E-HICH is ACK;

In the time that described the second correlation is less than 0, the value that is transferred to this user's ACK/NACK bit on this non-scheduled E-HICH is NACK.

Describedly carry out respectively the modulation of two-phase phase shift keying to described for three signature sequences that send TPC instruction and SS instruction, obtain the 4th symbol sebolic addressing, the 5th symbol sebolic addressing and the 6th symbol sebolic addressing and comprise:

Be respectively for three signature sequences that send TPC instruction and SS instruction if described: c (m, n); Wherein, n=1,2 ..., L _signature=80, and described L _signaturerepresent the length of described signature sequence, m=1,2,3, represent respectively the sequence number of these three signature sequences;

Described c (m, n) is carried out to the modulation of two-phase phase shift keying, obtains described the 4th symbol sebolic addressing, the 5th symbol sebolic addressing and the 6th symbol sebolic addressing:

$c^{\′}(m,n)=\left\{\begin{array}{c}1,c(m,n)=1\\ -1,c(m,n)=0\end{array}\right.,n=\mathrm{1,2},...,L_{\mathrm{Signature}}=80.$

Described third phase pass value, the 4th correlation and the 5th correlation calculate according to following formula:

$y\left(m\right)=\underset{n=1}{\overset{80}{\mathrm{\Σ}}}{c}^{\′}(m,n)\stackrel{\‾}{b}\left(n\right)$

Wherein, in the time that the value of m is respectively 1,2 or 3, y (m) represents respectively described third phase pass value, the 4th correlation or the 5th correlation, and c ' (m, n) is respectively described the 4th symbol sebolic addressing, the 5th symbol sebolic addressing or the 6th symbol sebolic addressing;

for described the 7th symbol sebolic addressing, n is the number of the bit in each symbol sebolic addressing.

Describedly determine that according to described third phase pass value, the 4th correlation and the 5th correlation the value that is transferred to this user's control command on this non-scheduled E-HICH comprises:

According to described third phase pass value, the 4th correlation and the 5th correlation calculation combination mark M according to the following formula:

$M=\arg \mathrm{ment}\left(\underset{m=\mathrm{1,2,3}}{\max \left\{\right|y\left(m\right)\left|\right\}}\right)$

Wherein, in the time that the value of m is respectively 1,2 or 3, y (m) represents respectively described third phase pass value, the 4th correlation or the 5th correlation;

represent to take absolute value the computing of maximum y (m) from described three correlation y (m); Arg ment represents to get the calculating of the value of the corresponding m of y (m) of described absolute value maximum;

In the time that the value of the y of absolute value maximum (m) is more than or equal to 0, the combination of the corresponding control command of antitone sequence that the value that is transferred to this user's control command on this non-scheduled E-HICH is M signature sequence;

In the time that the value of the y of absolute value maximum (m) is less than 0, the combination that the value that is transferred to this user's control command on this non-scheduled E-HICH is M the corresponding control command of signature sequence.

The checkout gear that a kind of E-HICH is also provided in embodiments of the invention, this device comprises: joint-detection module, demodulation and descrambling module and correlation value calculation module;

Described joint-detection module, reception signal for subframe place, the E-HICH place time slot to scheduling carries out joint-detection, obtain the estimation of the symbol sebolic addressing that this time slot of this subframe carries on the E-HICH of this scheduling, and the estimation of described symbol sebolic addressing is sent to described demodulation and descrambling module;

Described demodulation and descrambling module, carry out demodulation for the estimation of the symbol sebolic addressing to obtained and disturb, and obtains the bit sequence after demodulation is disturbed, and the bit sequence after demodulation and descrambling is sent to described correlation computations value module;

Described correlation value calculation module, for the bit sequence after disturbing according to the signature sequence corresponding with user and described demodulation, determines the value of the ACK/NACK bit that is transferred to this user on the E-HICH of this scheduling.

The checkout gear that a kind of E-HICH is also provided in embodiments of the invention, this device comprises: joint-detection module, demodulation and descrambling module and correlation value calculation module;

Described joint-detection module, for the reception signal of non-scheduled subframe place, E-HICH place time slot is carried out to joint-detection, obtain the estimation of the symbol sebolic addressing that this time slot of this subframe carries on this non-scheduled E-HICH, and the estimation of described symbol sebolic addressing is sent to described demodulation and descrambling module;

Described demodulation and descrambling module, carry out demodulation for the estimation of the symbol sebolic addressing to obtained and disturb, and obtains the bit sequence of demodulation after disturbing, and bit sequence after described demodulation is disturbed sends to described correlation value calculation module;

Described correlation value calculation module, for the bit sequence after disturbing according to the signature sequence group corresponding with user and described demodulation, determines the value of ACK/NACK bit and the value of control command that on this non-scheduled E-HICH, are transferred to this user.

Detection method and the device of a kind of E-HICH are provided in embodiments of the invention in summary.By above-mentioned detection method and device, can realize the detection to E-HICH, thereby in the signal that can transmit, extract the ACK/NACK or the TPC & SS instruction that send to a definite UE from E-HICH.

Brief description of the drawings

Fig. 1 is the flow chart of the detection method of the E-HICH that dispatches in the embodiment of the present invention.

Fig. 2 is the flow chart of the detection method of E-HICH non-scheduled in the embodiment of the present invention.

Fig. 3 is the schematic diagram of the checkout gear of the E-HICH that dispatches in the embodiment of the present invention.

Fig. 4 is the schematic diagram of the checkout gear of E-HICH non-scheduled in the embodiment of the present invention.

Embodiment

For making the object, technical solutions and advantages of the present invention express clearlyer, below in conjunction with drawings and the specific embodiments, the present invention is further described in more detail.

In technical scheme of the present invention, provide the detection method of a kind of E-HICH.Because E-HICH generally can be divided into the E-HICH of scheduling and non-scheduled E-HICH, therefore in an embodiment of the present invention,, taking a kind of detection method of E-HICH of scheduling and the detection method of a kind of non-scheduled E-HICH as example the detection method of the E-HICH in the present invention is introduced respectively.To respectively two kinds of above-mentioned detection methods at length be introduced below.

Embodiment mono-: the detection method of the E-HICH of scheduling.

Fig. 1 is the flow chart of the detection method of the E-HICH that dispatches in the embodiment of the present invention.As shown in Figure 1, the detection method of the E-HICH dispatching in the embodiment of the present invention comprises step as described below:

Step 101, carries out joint-detection to the reception signal of subframe place, E-HICH place time slot of scheduling, obtains the estimation of the symbol sebolic addressing that this time slot of this subframe carries on the E-HICH of this scheduling.

If the E-HICH of scheduling is positioned at time slot t, in this step, can, at the time slot t of the E-HICH place of this scheduling subframe n, carry out joint-detection to the reception signal of this time slot of this subframe t, thereby obtain the estimation of the symbol sebolic addressing that the time slot t of this subframe carries on the E-HICH of this scheduling: wherein, i represents i data field, i=1,2; N=1,2 ..., L _symbol, n represents the number of the bit in this symbol sebolic addressing, for example, and n bit in this symbol sebolic addressing; And L _symbolrepresent the number of the symbol of each data field carrying.

Specifically, for the time slot t of n subframe, the reception signal of establishing the time slot t in this n subframe is: r (n), and n=1,2 ..., L _burst.Here L, _burst=848 represent the length of a burst.If the spreading factor of the Orthogonal Variable Spreading Factor OVSF (OVSF) that the E-HICH of scheduling adopts code is SF=16, code Taoist monastic name is c.By above-mentioned r (n) is carried out to joint-detection, the estimation of the time slot t that can obtain this subframe symbol sebolic addressing that (on the E-HICH of scheduling) carries on ovsf code c

Wherein, above-mentioned joint detection algorithm is the algorithm of TD-SCDMA systematic comparison maturation, and concrete computational methods can, referring to related documents, not repeat them here.

Step 102, carries out demodulation to the estimation of obtained symbol sebolic addressing and disturbs, and obtains the bit sequence after demodulation is disturbed.

In an embodiment of the present invention, can be to the estimation of above-mentioned obtained symbol sebolic addressing

adopt Quadrature Phase Shift Keying (QPSK, Quadrature Phase Shift Keying) to separate mediation bit descrambling, and use $\hat{b}(i,n),n=\mathrm{1,2},\·\·\·,2L_{\mathrm{symbol}}$ Represent the bit sequence after demodulation descrambling.

Wherein, it is also the technology of TD-SCDMA systematic comparison maturation that above-mentioned QPSK separates mediation bit descrambling, and concrete computational methods can, referring to related documents, also repeat no more at this.

Step 103, the bit sequence after disturbing according to the signature sequence corresponding with user and described demodulation, determines the value of the data reception acknowledgement bit that is transferred to this user on the E-HICH of this scheduling.

In an embodiment of the present invention, described data receiving state can represent by ACK bit and NACK bit, therefore, in this step, bit sequence after can disturbing according to the signature sequence corresponding with user and described demodulation, the value of determining the data reception acknowledgement bit that is transferred to this user on the E-HICH of this scheduling is ACK or NACK, thereby can know according to this value the accepting state of the data that this user sends.For example, if determine that be transferred to this user on the E-HICH of this scheduling is ACK, represent that this user is correctly received by NODEB by the data that E-PUCH transmits of scheduling; And if determine that on the E-HICH of this scheduling, be transferred to this user is NACK, represent that this user is received by NODEB mistake by the data that E-PUCH transmits of scheduling.

In TD-SCDMA system, the spreading factor adopting due to E-HICH (comprising the E-HICH of scheduling and non-scheduled E-HICH) is 16, therefore in the subframe on E-HICH, maximal bit capacity is 88 bits (bit), can carry 44 data symbols (data symbol equals two bits).In an embodiment of the present invention, what adopt is that length is the spreading code of 80 bits, remaining 8 bits for identifying user whether to synchronously adjusting or no transmitting power being adjusted.Therefore, for the E-HICH of scheduling, each is with having per family the signature sequence that a unique length is 80 bits, and the value of the each bit in this signature sequence is carried out to negate computing, (value by bit becomes 0 from 1, or become 1 from 0) after, the antitone sequence of this signature sequence can be obtained again.Wherein, can be by above-mentioned signature sequence corresponding to NACK, and by the antitone sequence of this signature sequence corresponding to ACK.

In the time that transmitter (NODEB) sends the ACK/NACK bit corresponding with this user by the E-HICH of scheduling to user k (i.e. k user), directly ACK/NACK bit is not sent to the receiver of user k by the E-HICH of scheduling.In the standard of TD-SCDMA system, specify clearly that transmitter (NODEB) should be according to certain rule, the signature sequence adopting when really directional user k sends ACK/NACK bit.In the time sending to the value of ACK/NACK bit of user k to be ACK, transmitter will send to the antitone sequence of the signature sequence of this user k by the E-HICH channel of scheduling the receiver of user k; And in the time sending to the value of ACK/NACK bit of user k to be NACK, transmitter will send to the signature sequence of this user k by the E-HICH channel of scheduling the receiver of user k.Therefore, the receiver (i.e. k UE) of user k can be according to the rule of above-mentioned TD-SCDMA standard formulation, and what send to this user k by confirmation is that signature sequence or the antitone sequence of signature sequence determine that it is ACK or NACK on earth that transmitter sends to the ACK/NACK bit of this user k.

Concrete grammar is as follows:

If the signature sequence that user k adopts in the time that user k sends ACK/NACK bit according to TD-SCDMA standard transmitter is: b (n), n=1,2 ..., L _signature=80, wherein, L _signaturerepresent the length of signature sequence.This signature sequence is carried out to two-phase phase shift keying (BPSK) modulation, obtains symbol sebolic addressing: b ' (n), n=1,2 ..., L _signature=80. $b^{\′}\left(n\right)=\left\{\begin{array}{c}1,b\left(n\right)=1\\ -1,b\left(n\right)=0\end{array}\right..$

Known according to above-mentioned step 102, the above-mentioned estimation to obtained symbol sebolic addressing is carried out the bit sequence that demodulation disturbs after rear obtained demodulation is disturbed and is: $\hat{b}(i,n),n=\mathrm{1,2},\·\·\·,2L_{\mathrm{symbol}}.$ Due to

in rear four bits of first data field and front four bits of second data field be idle bit, therefore these 8 bits can be deleted, thereby obtain bit sequence:

$\stackrel{\‾}{b}\left(n\right)=\left\{\begin{array}{c}\hat{b}(1,n),n=\mathrm{1,2},\·\·\·,40\\ \hat{b}(2,n-36),n=\mathrm{41,42},\·\·\·,80\end{array}\right..$

According to above-mentioned sequence b ' (n) and sequence b (n), calculate according to the following formula correlation x:

$x=\underset{n=1}{\overset{80}{\mathrm{\Σ}}}{b}^{\′}\left(n\right)\stackrel{\‾}{b}\left(n\right)$

Wherein, n represent sequence b ' (n) and sequence b (n) in the number of symbol.

If x >=0, shows that it is ACK that transmitter sends to the value of the ACK/NACK bit of user k;

If x < 0, shows that it is NACK that transmitter sends to the value of the ACK/NACK bit of user k;

By above-mentioned step 101～103, the receiver of user k can complete the detection of the E-HICH to scheduling, thereby obtains the value that is transferred to the ACK/NACK bit of user k on the E-HICH of scheduling.

Embodiment bis-: the detection method on non-scheduled E-HICH.

Fig. 2 is the flow chart of the detection method of E-HICH non-scheduled in the embodiment of the present invention.As shown in Figure 2, in the embodiment of the present invention, the detection method of non-scheduled E-HICH comprises step as described below:

Step 201, carries out joint-detection to the reception signal of non-scheduled subframe place, E-HICH place time slot, obtains the estimation of the symbol sebolic addressing that this time slot of this subframe carries on this non-scheduled E-HICH.

If non-scheduled E-HICH is positioned at time slot t, in this step, can, at the time slot t of the E-HICH place of this scheduling subframe n, carry out joint-detection to the reception signal of this time slot of this subframe t, thereby obtain the estimation of the symbol sebolic addressing that the time slot t of this subframe carries on this non-scheduled E-HICH:

wherein, i represents i data field, i=1,2; N=1,2 ..., L _symbol, L _symbol=22 represent the number of symbols of each data field carrying.

Specifically, the reception signal of establishing the time slot t of n subframe is: r (n), and n=1,2 ..., L _burst.Here L, _burst=848 represent the length of a burst.The spreading factor of OVSF (Orthogonal Variable Spreading Factor OVSF) code that non-scheduled E-HICH adopts is SF=16, and code channel number is c.By above-mentioned r (n) is carried out to joint-detection, the estimation of the time slot t that can obtain this subframe symbol sebolic addressing that (on non-scheduled E-HICH) carries on ovsf code c

Wherein, above-mentioned joint detection algorithm is the algorithm of TD-SCDMA systematic comparison maturation, and concrete computational methods can, referring to related documents, not repeat them here.

Step 202, carries out demodulation to the estimation of obtained symbol sebolic addressing and disturbs, and obtains the bit sequence after demodulation is disturbed.

Similar with above-mentioned steps 102, in this step, can separate with QPSK the estimated values of digital modulation mode to above-mentioned obtained symbol sebolic addressing such as mediation bit descrambling

carry out demodulation and disturb, with the bit sequence after obtaining demodulation and disturbing.In the estimation of the symbol sebolic addressing to above-mentioned

carry out after QPSK demodulation and bit descrambling, the bit sequence after demodulation descrambling is: $\hat{b}(i,n),n=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,2L_{\mathrm{symbol}}.$

Wherein, it is also the technology of TD-SCDMA systematic comparison maturation that above-mentioned QPSK separates mediation bit descrambling, and concrete computational methods can, referring to related documents, also repeat no more at this.

Step 203, the bit sequence after disturbing according to the signature sequence group corresponding with user and described demodulation, determines the value of data reception acknowledgement bit and the value of control command that on this non-scheduled E-HICH, are transferred to this user.

Similar with above-mentioned steps 103, in this step, bit sequence after can disturbing according to the signature sequence group corresponding with user and described demodulation, determine that the value that is transferred to this user's data reception acknowledgement bit on this non-scheduled E-HICH is ACK or NACK, thereby can know according to this value the accepting state of the data that this user sends; Meanwhile, can also determine the value of the control command (being TPC & SS instruction) that is transferred to this user on this non-scheduled E-HICH.

Equally, in TD-SCDMA system, transmitter to k user (be user k) send ACK/NACK bit and TPC & SS instruction in, can be not directly ACK/NACK bit and TPC & SS instruction not be sent to the receiver of user k by E-HICH channel.The standard of TD-SCDMA system specifies that transmitter (NODEB) should be according to certain rule clearly, the signature sequence adopting when really directional user k sends ACK/NACK bit and the signature sequence adopting in the time that user k sends TPC & SS instruction.

Specifically, because the value of ACK/NACK bit has two kinds: ACK and NACK; And TPC instruction has two kinds: improve power and reduce power, SS instruction has 3 kinds: in advance, hysteresis and constant.Therefore, the different compound mode one between TPC instruction and SS instruction has 6 kinds.So, in TD-SCDMA system, designing 80 signature sequences, each signature sequence length is 80 bits, the value of each bit is 0 or 1.These 80 signature sequences are divided into 20 signature sequence groups by TD-SCDMA system, and each signature sequence group comprises four signature sequences.When in each signature sequence group, first signature sequence is used for sending ACK/NACK bit, use, and rear three signature sequences of each signature sequence group use while being used for sending TPC & SS instruction.Wherein, rear three signature sequences of each signature sequence group and the antitone sequence of these three signature sequences can represent respectively 6 kinds of combinations of TPC & SS instruction.For each UE with non-scheduled E-PUCH, network side (for example, RNC) will distribute a signature sequence group on non-scheduled E-HICH for feeding back ACK/NACK bit and the TPC & SS instruction of this UE for this UE.The group number of distributing to the signature sequence group of this UE will configure to UE and NODEB simultaneously.

When NODEB sends ACK/NACK bit and TPC & SS instruction by non-scheduled E-HICH to user k, can first be identified for sending to this UE the signature sequence group of ACK/NACK bit and TPC & SS instruction according to the configuration of RNC, and determine four signature sequences of this signature sequence group.In the time sending to the value of ACK/NACK bit of user k to be ACK, NODEB sends to the antitone sequence of first signature sequence of this signature sequence group by non-scheduled E-HICH channel the receiver of user k; In the time sending to the value of ACK/NACK bit of user k to be NACK, NODEB sends to first signature sequence of this signature sequence group by non-scheduled E-HICH channel the receiver of user k.

And send TPC & SS instruction to user k in, in 6 sequences that rear three sequences that can be from above-mentioned determined signature sequence group and the antitone sequence of these three sequences form, according to the mapping relations one by one between 6 combinations of defined TPC & SS instruction in TD-SCDMA standard and these 6 sequences, choose the sequence corresponding with the TPC & SS instruction of the required user of sending to k, then this sequence is sent to the receiver of user k by non-scheduled E-HICH.

User k (i.e. k UE) can determine feedback the ACK/NACK bit of this UE and the signature sequence group of TPC & SS instruction according to the configuration of RNC, and then can be identified for the signature sequence of feeding back ACK/NACK and for feeding back three signature sequences of TPC & SS instruction.

Therefore, the receiver of user k can adopt correlation technique to determine ACK/NACK bit and the TPC & SS instruction of the user k of transmitter transmission.

Concrete grammar is as follows:

Step 1), carry out BPSK modulation to described for the signature sequence that sends ACK/NACK bit, obtain the symbol sebolic addressing after modulation, can be referred to as the 3rd symbol sebolic addressing.

If the receiver of user k is determined the signature sequence that NODEB adopts when sending the ACK/NACK bit of user k and is: b (n), n=1,2 ..., L _signature=80.Signature sequence is carried out to BPSK modulation, obtains symbol sebolic addressing: b ' (n), n=1,2 ..., L _signature=80. $b^{\&prime;}\left(n\right)=\left\{\begin{array}{c}1,b\left(n\right)=1\\ -1,b\left(n\right)=0\end{array}\right..$

Step 2), carry out respectively BPSK modulation to described for three signature sequences that send TPC instruction and SS instruction, obtain respectively three symbol sebolic addressings after tone pitch, can be referred to as the 4th symbol sebolic addressing, the 5th symbol sebolic addressing and the 6th symbol sebolic addressing.

If user k receiver is determined 3 sequences that the TPC & SS instruction of NODEB transmission user k adopts and is respectively: c (m, n), n=1,2 ..., L _signature=80; Wherein, m=1,2,3 represent respectively the sequence number of these three sequences.These 3 sequences are modulated through BPSK 3 symbol sebolic addressings that obtain and are respectively: c ' (m, n):

$c^{\&prime;}(m,n)=\left\{\begin{array}{c}1,c(m,n)=1\\ -1,c(m,n)=0\end{array}\right.,n=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,L_{\mathrm{Signature}}=80,m=\mathrm{1,2,3}.$

Wherein, in the time that the value of m is respectively 1,2 or 3, c ' (m, n) represents respectively the 4th symbol sebolic addressing, the 5th symbol sebolic addressing and the 6th symbol sebolic addressing.

Step 3), delete rear four bits of first data field in the bit sequence after described demodulation is disturbed and front four bits of second data field, obtain the 7th symbol sebolic addressing.

The demodulation of E-HICH is disturbed result: $\hat{b}(i,n),n=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,2L_{\mathrm{symbol}}.$ Rear four bits of the demodulation of first data field and descrambling result, front four bits of second data field demodulation and descrambling result are idle bits, and these 8 bits are deleted, and obtain described the 7th bit sequence:

$\stackrel{\&OverBar;}{b}\left(n\right)=\left\{\begin{array}{c}\hat{b}(1,n),n=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,40\\ \hat{b}(2,n-36),n=\mathrm{41,42},\&CenterDot;\&CenterDot;\&CenterDot;,80\end{array}\right..$

Step 4), calculate the second correlation according to described the 3rd symbol sebolic addressing and the 7th symbol sebolic addressing.

Sequence b ' (n) calculates according to the following formula with the second correlation x ' of sequence b (n):

$x^{\&prime;}=\underset{n=1}{\overset{80}{\mathrm{\&Sigma;}}}{b}^{\&prime;}\left(n\right)\stackrel{\&OverBar;}{b}\left(n\right)$

Step 5), determine the value of the ACK/NACK bit that is transferred to this user on the E-HICH of non-this scheduling according to described the second correlation.

If i.e. x ' >=0, shows that the value that NODEB is transferred to the ACK/NACK bit of this user k on this non-scheduled E-HICH is ACK;

And if x ' < 0 shows that the value that NODEB is transferred to the ACK/NACK bit of this user k on this non-scheduled E-HICH is NACK;

Step 6), calculate third phase pass value according to described the 4th symbol sebolic addressing and the 7th symbol sebolic addressing; Calculate the 4th correlation according to described the 5th symbol sebolic addressing and the 7th symbol sebolic addressing; Calculate the 5th correlation according to described the 6th symbol sebolic addressing and the 7th symbol sebolic addressing.

In this step, can calculate above-mentioned three correlation y (m) according to sequence c ' (m, n) and sequence b (n), concrete computing formula is:

$y\left(m\right)=\underset{n=1}{\overset{80}{\mathrm{\&Sigma;}}}{c}^{\&prime;}(m,n)\stackrel{\&OverBar;}{b}\left(n\right),m=\mathrm{1,2,3}.$

Wherein, in the time that the value of m is respectively 1,2 or 3, y (m) represents respectively described third phase pass value, the 4th correlation or the 5th correlation.

Step 7), determine according to described third phase pass value, the 4th correlation and the 5th correlation the value that is transferred to this user's control command on this non-scheduled E-HICH.

In this step, can first identify M according to above-mentioned third phase pass value, the 4th correlation and the combination of the 5th correlation value calculation:

$M=\arg \mathrm{ment}\left(\underset{m=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,3}{\max \left\{\right|y\left(m\right)\left|\right\}}\right)$

Wherein, represent to take absolute value the computing of maximum y (m) from three correlation y (m); Argment represents to get the calculating of the value of the corresponding m of y (m) of described absolute value maximum.

If the value of the y of absolute value maximum (m) is more than or equal to 0, represent that transmitter is transferred to the combination of the corresponding TPC & of the antitone sequence SS instruction that the value of the TPC & SS instruction of this user k is M signature sequence on this non-scheduled E-HICH.

If the value of the y of absolute value maximum (m) is more than or equal to 0, represent that the value that transmitter is transferred to the TPC & SS instruction of this user k on this non-scheduled E-HICH is the combination of M the corresponding TPC & of signature sequence SS instruction.

By above-mentioned step 201～203, can complete the detection to non-scheduled E-HICH, thereby obtain the value of ACK/NACK bit and the value of TPC & SS instruction that on non-scheduled E-HICH, are transferred to user k.

Fig. 3 is the schematic diagram of the checkout gear of the E-HICH that dispatches in the embodiment of the present invention.As shown in Figure 3, the checkout gear 300 of the E-HICH dispatching in the embodiment of the present invention comprises: joint-detection module 301, demodulation and descrambling module 302 and correlation value calculation module 303;

Joint-detection module 301, reception signal for subframe place, the E-HICH place time slot to scheduling carries out joint-detection, obtain the estimation of the symbol sebolic addressing that this time slot of this subframe carries on the E-HICH of this scheduling, and the estimation of described symbol sebolic addressing is sent to demodulation and descrambling module 302;

Demodulation and descrambling module 302, carry out demodulation for the estimation of the symbol sebolic addressing to obtained and disturb, and obtains the bit sequence after demodulation is disturbed, and the bit sequence after demodulation and descrambling is sent to correlation computations value module 303;

Correlation value calculation module 303, for the bit sequence after disturbing according to the signature sequence corresponding with user and described demodulation, determines the value of the data reception acknowledgement bit that is transferred to this user on the E-HICH of this scheduling.

Fig. 4 is the schematic diagram of the checkout gear of E-HICH non-scheduled in the embodiment of the present invention.As shown in Figure 4, in the embodiment of the present invention, the checkout gear 400 of non-scheduled E-HICH comprises: joint-detection module 401, demodulation and descrambling module 402 and correlation value calculation module 403;

Joint-detection module 401, for the reception signal of non-scheduled subframe place, E-HICH place time slot is carried out to joint-detection, obtain the estimation of the symbol sebolic addressing that this time slot of this subframe carries on this non-scheduled E-HICH, and the estimation of described symbol sebolic addressing is sent to demodulation and descrambling module 402;

Demodulation and descrambling module 402, carry out demodulation for the estimation of the symbol sebolic addressing to obtained and disturb, and obtains the bit sequence of demodulation after disturbing, and bit sequence after described demodulation is disturbed sends to correlation value calculation module 403;

Correlation value calculation module 403, be used for the bit sequence after the basis signature sequence group corresponding with user and described demodulation are disturbed, determine the value of data reception acknowledgement bit and the value of control command that on this non-scheduled E-HICH, are transferred to this user.

By using above-mentioned checkout gear, can complete the detection to scheduling or non-scheduled E-HICH, thereby obtain ACK/NACK bit and the TPC & SS instruction on E-HICH, transmitted.

The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (21)

1. a detection method of E-HICH, is characterized in that, the method comprises:

The reception signal of subframe place, E-HICH place time slot to scheduling carries out joint-detection, obtains the estimation of the symbol sebolic addressing that this time slot of this subframe carries on the E-HICH of this scheduling;

The estimation of obtained symbol sebolic addressing is carried out to demodulation and disturb, obtain the bit sequence after demodulation is disturbed;

Bit sequence after disturbing according to the signature sequence corresponding with user and described demodulation, determines the value of the ACK/NACK bit that is transferred to this user on the E-HICH of this scheduling;

Wherein, the bit sequence after the signature sequence that described basis is corresponding with user and described demodulation are disturbed, determine that the value of the ACK/NACK bit that is transferred to this user on the E-HICH of this scheduling comprises:

The described signature sequence corresponding with user carried out to the modulation of two-phase phase shift keying, obtain the first symbol sebolic addressing;

Delete rear four bits of first data field in the bit sequence after described demodulation is disturbed and front four bits of second data field, obtain second symbol sequence;

Calculate the first correlation according to described the first symbol sebolic addressing and second symbol sequence;

Determine the value of the ACK/NACK bit that is transferred to this user on the E-HICH of this scheduling according to described the first correlation.

2. method according to claim 1, is characterized in that, describedly the estimation of obtained symbol sebolic addressing is carried out to demodulation disturbs, and the bit sequence obtaining after demodulation is disturbed comprises:

Adopt Quadrature Phase Shift Keying to carry out demodulation to the estimation of obtained symbol sebolic addressing and disturb, obtain the bit sequence after demodulation is disturbed.

3. method according to claim 1, is characterized in that, the value of described ACK/NACK bit is: confirm (ACK) or non-confirmation (NACK).

4. method according to claim 1, is characterized in that, described the described signature sequence corresponding with user is carried out to the modulation of two-phase phase shift keying, obtains the first symbol sebolic addressing and comprises:

If the described signature sequence corresponding with user is b (n), n=1,2 ..., L _signature=80; Wherein, described L _signaturerepresent the length of described signature sequence;

Described b (n) is carried out to the modulation of two-phase phase shift keying, obtains described the first symbol sebolic addressing:

$b^{\&prime;}\left(n\right)=\left\{\begin{array}{c}1,b\left(n\right)=1\\ -1,b\left(n\right)=0\end{array}\right.,n=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,L_{\mathrm{Signature}}=80.$

5. method according to claim 1, is characterized in that, front four bits of rear four bits of first data field in the bit sequence after the described demodulation of described deletion is disturbed and second data field, obtain second symbol sequence and comprise:

If the bit sequence after described demodulation is disturbed is

wherein, described L _symbolrepresent the number of the symbol of each data field carrying;

Delete rear four bits of first data field in the bit sequence after described demodulation is disturbed and front four bits of second data field, obtain described second symbol sequence: $\stackrel{\&OverBar;}{b}\left(n\right)=\left\{\begin{array}{c}\hat{b}(1,n),n=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,40\\ \hat{b}(2,n-36),n=\mathrm{41,42},\&CenterDot;\&CenterDot;\&CenterDot;,80\end{array}\right..$

6. method according to claim 1, is characterized in that, in the time calculating the first correlation according to described the first symbol sebolic addressing and second symbol sequence, described the first correlation calculates according to following formula:

$x=\underset{n=1}{\overset{80}{\mathrm{\&Sigma;}}}{b}^{\&prime;}\left(n\right)\stackrel{\&OverBar;}{b}\left(n\right)$

Wherein, x is described the first correlation, and b ' is (n) described the first symbol sebolic addressing,

for described second symbol sequence, n be b ' (n) and

in the number of bit.

7. according to arbitrary described method in claim 1～6, it is characterized in that, describedly determine that according to described the first correlation the value of the ACK/NACK bit that is transferred to this user on the E-HICH of this scheduling comprises:

In the time that described the first correlation is more than or equal to 0, the value that is transferred to this user's ACK/NACK bit on the E-HICH of this scheduling is ACK;

In the time that described the first correlation is less than 0, the value that is transferred to this user's ACK/NACK bit on the E-HICH of this scheduling is NACK.

8. a detection method of E-HICH, is characterized in that, the method comprises:

Reception signal to non-scheduled subframe place, E-HICH place time slot carries out joint-detection, obtains the estimation of the symbol sebolic addressing that this time slot of this subframe carries on this non-scheduled E-HICH;

The estimation of obtained symbol sebolic addressing is carried out to demodulation and disturb, obtain the bit sequence after demodulation is disturbed;

Bit sequence after disturbing according to the signature sequence group corresponding with user and described demodulation, determines the value of ACK/NACK bit and the value of control command that on this non-scheduled E-HICH, are transferred to this user;

Wherein, the bit sequence after the signature sequence group that described basis is corresponding with user and described demodulation are disturbed, determine that the value of ACK/NACK bit and the value of control command that on this non-scheduled E-HICH, are transferred to this user comprise:

Signature sequence for sending ACK/NACK bit is carried out to the modulation of two-phase phase shift keying, obtain the 3rd symbol sebolic addressing;

Carry out respectively the modulation of two-phase phase shift keying to described for three signature sequences that send TPC instruction and SS instruction, obtain the 4th symbol sebolic addressing, the 5th symbol sebolic addressing and the 6th symbol sebolic addressing;

Delete rear four bits of first data field in the bit sequence after described demodulation is disturbed and front four bits of second data field, obtain the 7th symbol sebolic addressing;

Calculate the second correlation according to described the 3rd symbol sebolic addressing and the 7th symbol sebolic addressing;

Determine the value of the ACK/NACK bit that is transferred to this user on the E-HICH of non-this scheduling according to described the second correlation;

Calculate third phase pass value according to described the 4th symbol sebolic addressing and the 7th symbol sebolic addressing;

Calculate the 4th correlation according to described the 5th symbol sebolic addressing and the 7th symbol sebolic addressing;

Calculate the 5th correlation according to described the 6th symbol sebolic addressing and the 7th symbol sebolic addressing;

Determine according to described third phase pass value, the 4th correlation and the 5th correlation the value that is transferred to this user's control command on this non-scheduled E-HICH.

9. method according to claim 8, is characterized in that, describedly the estimation of obtained symbol sebolic addressing is carried out to demodulation disturbs, and the bit sequence obtaining after demodulation is disturbed comprises:

Adopt Quadrature Phase Shift Keying to carry out demodulation to the estimation of obtained symbol sebolic addressing and disturb, obtain the bit sequence after demodulation is disturbed.

10. method according to claim 8, is characterized in that, the value of described ACK/NACK bit is: confirm (ACK) or non-confirmation (NACK).

11. methods according to claim 8, is characterized in that, described control command comprises:

Transmitting power control (TPC) instruction and simultaneous bias (SS) instruction.

12. methods according to claim 8, is characterized in that, the described signature sequence group corresponding with user comprises:

For sending a signature sequence of ACK/NACK bit, and for sending three signature sequences of TPC instruction and SS instruction.

13. methods according to claim 8, is characterized in that, describedly carry out the modulation of two-phase phase shift keying to described for sending the signature sequence of ACK/NACK bit, obtain the 3rd symbol sebolic addressing and comprise:

Be b (n) if described for sending the signature sequence of ACK/NACK bit, n=1,2 ..., L _signature=80; Wherein, described L _signaturerepresent the length of described signature sequence;

Described b (n) is carried out to the modulation of two-phase phase shift keying, obtains described the 3rd symbol sebolic addressing:

$b^{\&prime;}\left(n\right)=\left\{\begin{array}{c}1,b\left(n\right)=1\\ -1,b\left(n\right)=0\end{array}\right.,n=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,L_{\mathrm{Signature}}=80.$

14. methods according to claim 8, is characterized in that, front four bits of rear four bits of first data field in the bit sequence after the described demodulation of described deletion is disturbed and second data field, obtain the 7th symbol sebolic addressing and comprise:

If the bit sequence after described demodulation is disturbed is

wherein, described L _symbolrepresent the number of the symbol of each data field carrying;

Delete rear four bits of first data field in the bit sequence after described demodulation is disturbed and front four bits of second data field, obtain described the 7th symbol sebolic addressing: $\stackrel{\&OverBar;}{b}\left(n\right)=\left\{\begin{array}{c}\hat{b}(1,n),n=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,40\\ \hat{b}(2,n-36),n=\mathrm{41,42},\&CenterDot;\&CenterDot;\&CenterDot;,80\end{array}\right..$

15. methods according to claim 8, is characterized in that, in the time calculating the second correlation according to described the 3rd symbol sebolic addressing and the 7th symbol sebolic addressing, described the second correlation calculates according to following formula:

$x^{\&prime;}=\underset{n=1}{\overset{80}{\mathrm{\&Sigma;}}}{b}^{\&prime;}\left(n\right)\stackrel{\&OverBar;}{b}\left(n\right)$

Wherein, x ' is described the second correlation, and b ' is (n) described the 3rd symbol sebolic addressing,

for described the 7th symbol sebolic addressing, n be b ' (n) and

in the number of bit.

In 16. according to Claim 8～15, arbitrary described method, is characterized in that, describedly determines that according to described the second correlation the value that is transferred to this user's ACK/NACK bit on this non-scheduled E-HICH comprises:

In the time that described the second correlation is more than or equal to 0, the value that is transferred to this user's ACK/NACK bit on this non-scheduled E-HICH is ACK;

In the time that described the second correlation is less than 0, the value that is transferred to this user's ACK/NACK bit on this non-scheduled E-HICH is NACK.

17. methods according to claim 8, it is characterized in that, describedly carry out respectively the modulation of two-phase phase shift keying to described for three signature sequences that send TPC instruction and SS instruction, obtain the 4th symbol sebolic addressing, the 5th symbol sebolic addressing and the 6th symbol sebolic addressing and comprise:

Be respectively for three signature sequences that send TPC instruction and SS instruction if described: c (m, n); Wherein, n=1,2 ..., L _signature=80, and described L _signaturerepresent the length of described signature sequence, m=1,2,3, represent respectively the sequence number of these three signature sequences;

Described c (m, n) is carried out to the modulation of two-phase phase shift keying, obtains described the 4th symbol sebolic addressing, the 5th symbol sebolic addressing and the 6th symbol sebolic addressing:

$c^{\&prime;}(m,n)=\left\{\begin{array}{c}1,c(m,n)=1\\ -1,c(m,n)=0\end{array}\right.,n=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,L_{\mathrm{Signature}}=80.$

18. methods according to claim 8, is characterized in that, described third phase pass value, the 4th correlation and the 5th correlation calculate according to following formula:

$y\left(m\right)=\underset{n=1}{\overset{80}{\mathrm{\&Sigma;}}}{c}^{\&prime;}(m,n)\stackrel{\&OverBar;}{b}\left(n\right)$

Wherein, in the time that the value of m is respectively 1,2 or 3, y (m) represents respectively described third phase pass value, the 4th correlation or the 5th correlation, and c ' (m, n) is respectively described the 4th symbol sebolic addressing, the 5th symbol sebolic addressing or the 6th symbol sebolic addressing;

for described the 7th symbol sebolic addressing, n is the number of the bit in each symbol sebolic addressing.

19. methods according to claim 18, is characterized in that, describedly determine that according to described third phase pass value, the 4th correlation and the 5th correlation the value that is transferred to this user's control command on this non-scheduled E-HICH comprises:

According to described third phase pass value, the 4th correlation and the 5th correlation calculation combination mark M according to the following formula:

$M=\arg \mathrm{ment}\left(\underset{m=\mathrm{1,2,3}}{\max \left\{\right|y\left(m\right)\left|\right\}}\right)$

Wherein, in the time that the value of m is respectively 1,2 or 3, y (m) represents respectively described third phase pass value, the 4th correlation or the 5th correlation;

represent to take absolute value the computing of maximum y (m) from described three correlation y (m); Argment represents to get the calculating of the value of the corresponding m of y (m) of described absolute value maximum;

In the time that the value of the y of absolute value maximum (m) is more than or equal to 0, the combination of the corresponding control command of antitone sequence that the value that is transferred to this user's control command on this non-scheduled E-HICH is M signature sequence;

In the time that the value of the y of absolute value maximum (m) is less than 0, the combination that the value that is transferred to this user's control command on this non-scheduled E-HICH is M the corresponding control command of signature sequence.

The checkout gear of 20. 1 kinds of E-HICH, is characterized in that, this device comprises: joint-detection module, demodulation and descrambling module and correlation value calculation module;

Described joint-detection module, reception signal for subframe place, the E-HICH place time slot to scheduling carries out joint-detection, obtain the estimation of the symbol sebolic addressing that this time slot of this subframe carries on the E-HICH of this scheduling, and the estimation of described symbol sebolic addressing is sent to described demodulation and descrambling module;

Described demodulation and descrambling module, carry out demodulation for the estimation of the symbol sebolic addressing to obtained and disturb, and obtains the bit sequence after demodulation is disturbed, and the bit sequence after demodulation and descrambling is sent to described correlation computations value module;

Described correlation value calculation module, carries out the modulation of two-phase phase shift keying for the signature sequence to corresponding with user, obtains the first symbol sebolic addressing; Delete rear four bits of first data field in the bit sequence after described demodulation is disturbed and front four bits of second data field, obtain second symbol sequence; Calculate the first correlation according to described the first symbol sebolic addressing and second symbol sequence; Determine the value of the ACK/NACK bit that is transferred to this user on the E-HICH of this scheduling according to described the first correlation.

The checkout gear of 21. 1 kinds of E-HICH, is characterized in that, this device comprises: joint-detection module, demodulation and descrambling module and correlation value calculation module;

Described joint-detection module, for the reception signal of non-scheduled subframe place, E-HICH place time slot is carried out to joint-detection, obtain the estimation of the symbol sebolic addressing that this time slot of this subframe carries on this non-scheduled E-HICH, and the estimation of described symbol sebolic addressing is sent to described demodulation and descrambling module;

Described demodulation and descrambling module, carry out demodulation for the estimation of the symbol sebolic addressing to obtained and disturb, and obtains the bit sequence of demodulation after disturbing, and bit sequence after described demodulation is disturbed sends to described correlation value calculation module;

Described correlation value calculation module, for carrying out the modulation of two-phase phase shift keying to described for sending the signature sequence of ACK/NACK bit, obtains the 3rd symbol sebolic addressing; Carry out respectively the modulation of two-phase phase shift keying to described for three signature sequences that send TPC instruction and SS instruction, obtain the 4th symbol sebolic addressing, the 5th symbol sebolic addressing and the 6th symbol sebolic addressing; Delete rear four bits of first data field in the bit sequence after described demodulation is disturbed and front four bits of second data field, obtain the 7th symbol sebolic addressing; Calculate the second correlation according to described the 3rd symbol sebolic addressing and the 7th symbol sebolic addressing; Determine the value of the ACK/NACK bit that is transferred to user on the E-HICH of non-this scheduling according to described the second correlation; Calculate third phase pass value according to described the 4th symbol sebolic addressing and the 7th symbol sebolic addressing; Calculate the 4th correlation according to described the 5th symbol sebolic addressing and the 7th symbol sebolic addressing; Calculate the 5th correlation according to described the 6th symbol sebolic addressing and the 7th symbol sebolic addressing; Determine according to described third phase pass value, the 4th correlation and the 5th correlation the value that is transferred to this user's control command on this non-scheduled E-HICH.

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