CN101938755B - Methods and devices for sending and detecting response message - Google Patents

Abstract

The embodiment of the invention discloses methods and devices for sending and detecting a response message. The sending method comprises the step that when determining the response message required to be sent to user equipment (UE) is an acknowledge response (ACK) message, a base station NodeB sends an empty sequence to the UE. The sending device comprises a response message type determining module and an ACK message sending module, wherein the response message type determining module sends a determining instruction to the ACK message sending module after determining the response message required to be sent to the UE is the ACK message; and the ACK message sending module sends the empty sequence to the UE after receiving the determining instruction. When the methods and devices of the invention are used, the sending power of an enhanced hybrid indicator channel (E-HICH) can be reduced, so that the interference with other UE in a cell or neighboring cells at the same time slot is reduced.

Description

A kind of sending method of response message, device and detection method, device

Technical field

The present invention relates to moving communicating field, relate in particular to a kind of sending method, device and detection method, device of response message.

Background technology

At present, on the E-HICH channel of dispatching in the HSUPA system and non-scheduled E-HICH channel to send the method for response message be identical in base station (NodeB), and response message wherein comprises confirms to reply (ACK) message and (NACK) message is replied in non-confirmation.

Specifically, no matter be the E-HICH of scheduling or non-scheduled E-HICH, the method that NodeB sends ACK message and NACK message is:

the E-HICH subframe of determining, the decode results feeding back response information of the data block that NodeB need to send on the E-PUCH channel according to UE, particularly, NodeB determines a signature sequence on the E-HICH channel according to the gap information of E-PUCH channel of carrying data block and channel code information, and be that the correct or wrong response message of determining that needs feed back is ACK message or NACK message according to the decode results of described data block, if need feedback NACK message, NodeB issues UE with described signature sequence, if need feeding back ACK message, the antitone sequence of described signature sequence is issued UE.

Correspondingly, UE in the method that detects ACK message and NACK message on the E-HICH channel is: at first UE determines a signature sequence on the E-HICH channel according to the gap information of the E-PUCH channel of carrying data block and channel code information, UE determine the method for this signature sequence and NODEB identical, the definite signature sequence of the signature sequence that UE determines and NODEB is identical.Then, the UE sequence that detection NodeB sends by the E-HICH channel on the E-HICH subframe of determining is former sequence or antitone sequence, if former sequence, what UE determined the NodeB feedback is NACK message, if antitone sequence, what UE determined the NodeB feedback is ACK message.Wherein to detect by relevant method the sequence of receiving be former sequence or antitone sequence to UE.Concrete related detecting method sees also pertinent literature.

Fig. 1 be under existing 3GPP standard on the E-HICH channel method flow diagram of feeding back response information, as shown in Figure 1, the method specifically comprises:

Step 101, NodeB determines a signature sequence on the E-HICH channel according to the gap information of E-PUCH channel of carrying data block and channel code information.

Signature sequence length in this step is 80 bits, specifically uses c _i, i=1,2 ..., 80 these signature sequences of expression.

Step 102, the response message that NodeB feeds back as required and described signature sequence determine to feed back to the sequence b of UE _i

In this step, b _iLength is 80.

Particularly, if NodeB need to feed back NACK message, b _i=c _iIf NodeB needs feeding back ACK message, b _i=c _i, c wherein _iSignature sequence c _iAntitone sequence.

Step 103, NodeB is with b _iWith 8 idle bits sequence d that to be merged into a length be 88 bits _i, particularly: $d_i=\left\{\begin{array}{c}{b}_i,i=\mathrm{1,2},......,40\\ z_{i-40},i=\mathrm{41,42},......,48\\ b_{i-8},i=\mathrm{49,50},......,88\end{array}\right..$

Wherein, z _i, i=1,2 ..., i idle bit of 8 expressions, the value of each idle bit can get 0 or 1 randomly.

Step 104, NodeB is to d _iCarry out bit scramble and QPSK modulation, obtain a length and be 44 symbol sebolic addressing y _i, i=1,2 ..., 44.

Step 105, NodeB is to y _iCarry out issuing UE after other subsequent treatment.

Other subsequent treatment described in this step and content of the present invention are irrelevant, and concrete processing method can be referring to the 3GPP standard.

In order to guarantee the transmission correctness of ACK message and NACK message, need to guarantee that the E-HICH channel has higher transmitted power, the transmitted power that the E-HICH channel is higher will produce larger interference with other UE of time slot to this residential quarter and adjacent cell, affect the communication quality of other UE.

Summary of the invention

In view of this, the purpose of the embodiment of the present invention is to provide a kind of sending method and device of response message, to reduce the transmitted power of E-HICH channel, thereby reduce the interference with other UE of time slot of this residential quarter and adjacent cell, and a kind of detection method and device of response message are correspondingly proposed, be ACK message or NACK message correctly to detect the response message that receives.

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

A kind of on the E-HICH channel sending method of response message, the method comprises:

If base station node B is determined the response message that need to send to user equipment (UE) and replied ACK message for confirmation on E-HICH, NodeB sends empty sequence to UE on E-HICH.

A kind of dispensing device of response message, this device comprise response message type determination module and ACK message transmission module;

Described response message type determination module, determine need to be ACK message to the response message that UE sends after, send to the ACK message transmission module and determine indication;

Described ACK message transmission module after receiving described definite indication, sends empty sequence to UE.

A kind of detection method of response message, the method comprises: UE carries out to the reception signal of E-HICH channel the soft-decision bit sequence that demodulation estimates to obtain not containing idle bit, calculates the correlation c between the described soft-decision bit sequence signature sequence corresponding with response message;

The method is applied in mobile communication system according to transmission response message provided by the invention, and the method also comprises:

UE is according to p=|c| ²Calculate the signal power value p of response message, what determine the NodeB feedback if p is greater than or equal to predetermined value is NACK message, otherwise definite NodeB feedback is ACK message.

A kind of checkout gear of response message is applied in the mobile communication system according to transmission response message provided by the invention, and this device comprises signal power detection module and response message type determination module;

Described signal power detection module carries out to the response message that receives the soft-decision bit sequence that demodulation estimates to obtain not containing idle bit, calculates the correlation c between the described soft-decision bit sequence signature sequence corresponding with response message, according to p=|c| ²Calculate the signal power value p of response message, the performance number p that calculates is issued described response message type determination module;

Described response message type determination module judges whether p is greater than or equal to predetermined value, and if so, what determine the NodeB feedback is NACK message, otherwise definite NodeB feedback is ACK message.

As seen, to UE feeding back ACK message the time, what send to UE is empty sequence, therefore can reduce the transmitted power of E-HICH channel due to the present invention, and then has reduced the interference with other UE of time slot of this residential quarter and adjacent cell.

NodeB sends empty sequence to UE and is equivalent to NodeB and does not send any information to UE, and therefore, what the present invention can distinguish that NodeB sends by the power of the signal that detects UE and receive is ACK message or NACK message.

Description of drawings

Fig. 1 be under existing 3GPP standard on the E-HICH channel method flow diagram of feeding back response information;

Fig. 2 is the method flow diagram in E-HICH channel feedback response message provided by the invention;

Fig. 3 is the structure drawing of device of transmission response message provided by the invention.

Fig. 4 is the flow chart of the response message detection method that proposes of the present invention.

Fig. 5 is the structure chart of response message checkout gear provided by the invention.

Embodiment

For making purpose of the present invention, technical scheme and advantage clearer, referring to accompanying drawing, the embodiment that develops simultaneously, the present invention is described in more detail.

Usually, need the transmission of data, just need to consume the power of transmitter.The present invention sends the antitone sequence of signature sequence corresponding to ACK message by cancellation, reduce the transmitted power of E-HICH channel, thereby reduces the E-HICH channel to the interference with time slot UE of this residential quarter and adjacent cell.

In the HSUPA system, the existing inner-loop power control of E-PUCH channel has again exterior ring power to control.The Block Error Rate of the data block that sends on the E-PUCH channel (BLER) desired value is generally 1%, at the most can be greater than 10%.Therefore, NodeB is far smaller than the frequency of feeding back ACK message to the frequency of UE feedback NACK message.The present invention specifically sends the antitone sequence of signature sequence corresponding to ACK message by cancellation, save the power of feeding back ACK message, thereby effectively reduces the transmitted power of E-HICH, and then reduces E-HICH to the interference with time slot UE of this residential quarter and adjacent cell.

Fig. 2 is the method flow diagram in E-HICH channel feedback response message provided by the invention, and as shown in Figure 2, the method specifically comprises:

Step 201, NodeB determines a signature sequence c on E-HICH according to the gap information of E-PUCH channel of carrying data block and channel code information _i, i=1,2 ..., 80.

This step is with step 101.

Step 202, NodeB is that the correct or wrong response message of determining that needs feed back is ACK message or NACK message according to the decode results of the upper data block of E-PUCH, if ACK message, execution in step 203, otherwise, execution in step 204.

Step 203 is with the sequence b of NodeB to the UE transmission _iBe defined as empty sequence and send process ends.

In this step, NodeB to the concrete grammar that UE sends empty sequence can be: NodeB does not send any information to UE on E-HICH; Perhaps, NodeB directly makes symbol sebolic addressing y _iBe complete " 0 " sequence, then according to prior art to y _iCarry out issuing UE after subsequent treatment.

Step 204 is with the sequence b of NodeB to the UE transmission _iBe defined as the former sequence of described signature sequence and send process ends.

In this step, the method that NodeB issues UE with former sequence specifically comprises:

Step 1: with b _iWith 8 idle bits sequence d that to be merged into a length be 88 bits _i, particularly: $d_i=\left\{\begin{array}{c}{b}_i,i=\mathrm{1,2},......,40\\ z_{i-40},i=\mathrm{41,42},......,48\\ b_{i-8},i=\mathrm{49,50},......,88\end{array}\right..$

Wherein, z _i, i=1,2 ..., i idle bit of 8 expressions, the value of each idle bit can get 0 or 1 randomly.

Step 2:

NodeB is to d _iCarry out bit scramble and QPSK modulation, obtain a length and be 44 symbol sebolic addressing y _i, i=1,2 ..., 44.

Step 3:NodeB is to y _iCarry out issuing UE after other subsequent treatment.

Fig. 3 is the structure drawing of device of transmission response message provided by the invention, and as shown in Figure 3, this device comprises response message type determination module 301 and ACK message transmission module 302.

Response message type determination module 301, determine need to be ACK message to the response message that UE sends after, send to ACK message transmission module 302 and determine indication.

ACK message transmission module 302 after receiving described definite indication, sends empty sequence to UE.

Wherein, ACK message transmission module 302 after receiving described definite indication, can not send any information to UE on E-HICH, and also can send value to UE on E-HICH is the symbol sebolic addressing of full 0.

Sending method and device for response message proposed by the invention the invention allows for corresponding detection method and device, below by embodiment, described detection method and device are described.

Fig. 4 is the flow chart of the response message detection method that proposes of the present invention, and as shown in Figure 4, this detection method comprises:

Step 401, UE receives in the E-HICH subframe of determining the E-HICH signal that NODEB sends, and carries out to received signal joint-detection, obtains the estimation of the symbol sebolic addressing of described response message.

Integrating step 104 as can be known, the length of this symbol sebolic addressing is 44.

Step 402, UE carries out demodulation to E-HICH and disturbs, and obtains length and be 88 soft-decision bit sequence.

In this step, then UE carries out descrambling to demodulation result and just obtains described soft-decision bit sequence u (i) by being that the QPSK demodulation is carried out in the estimation of 44 symbol sebolic addressing to length, i=1, and 2 ..., 88.

Step 403, UE is 8 soft-decision bit droppings that idle bit is corresponding in 88 soft-decision bit sequence with length, obtaining length is the soft-decision bit sequence of 80 bits $v\left(i\right)=\left\{\begin{array}{c}u\left(i\right),i=\mathrm{1,2},......,40\\ u(i+8),i=\mathrm{41,42},......,80\end{array}\right..$

Step 404, it is correlation c between 80 the soft-decision bit sequence signature sequence corresponding with described response message that UE calculates described length.

Wherein, UE and the base station base station of having made an appointment is used for the signature sequence of feeding back response information, and therefore, UE knows described signature sequence.UE needs first to modulate by BPSK this signature sequence is become modulation sequence x (i) when calculating correlation, here, $x\left(i\right)=\left\{\begin{array}{c}-1,c_i=0\\ +1,c_i=1\end{array}\right..$ Then, UE calculates the correlation of soft-decision bit sequence v (i) and x (i): $c=\underset{n=1}{\overset{80}{\mathrm{\Σ}}}v\left(i\right)x\left(i\right).$

Step 405, UE calculates signal power value p=|c| ²

Step 406, what the signal power value p that the UE basis calculates determined the NodeB feedback is ACK message or NACK message.

In this step, if p 〉=k σ ², what determine the NodeB feedback is NACK message, otherwise definite NodeB feedback is ACK message.

Wherein k is the positive number greater than 1, and for example value is k=2, σ ²It is noise power-value.The value of k can obtain by emulation.σ ²Method of estimation be not content of the present invention, repeat no more here.Its method of estimation can be consulted existing document.

Fig. 5 is the structure chart of response message checkout gear provided by the invention, and as shown in Figure 5, this device comprises signal power detection module 501 and response message type determination module 502.

Signal power detection module 501 carries out to the response message that receives the soft-decision bit sequence that demodulation estimates to obtain not containing idle bit, calculates the correlation c between the described soft-decision bit sequence signature sequence corresponding with response message, according to p=|c| ²Calculate the signal power value p of response message, the performance number p that calculates is issued response message type determination module 502.

Response message type determination module 502 judges whether p is greater than or equal to predetermined value, and if so, what determine the NodeB feedback is NACK message, otherwise definite NodeB feedback is ACK message.

By such scheme as seen, due to the present invention to UE feeding back ACK message the time, to the UE transmission is empty sequence, therefore reduced to the power of UE transmission, thereby can guarantee to reduce the transmitted power of E-HICH channel on transfer of data correct basis, and then reduce the interference with other UE of time slot of this residential quarter and adjacent cell.

In addition, development trend from mobile communication technology, following DPCH channel will be removed, all upstream datas all send by HSUPA, therefore, number and the number of users on E-HICH of E-HICH channel all will improve, and in this case, the transmitted power that reduces E-HICH is highly significant to the interference that reduces in network.

Detection method provided by the invention and device, the signal power that receives by detection judges the response message type of reception, and detection method is simple and convenient, and detection speed is fast.

The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention, all any modifications of making within the spirit and principles in the present invention, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (6)

1. the sending method of a response message, is characterized in that, the method comprises:

Need to reply ACK message for confirming to the response message that user equipment (UE) sends if base station node B is determined, NodeB sends empty sequence to UE;

Wherein, described NodeB comprises to UE transmission empty sequence:

NodeB does not send any information to UE on E-HICH, perhaps,

NodeB sends value to UE on E-HICH be the symbol sebolic addressing of full 0.

2. the method for claim 1, is characterized in that, the method further comprises:

NodeB determines according to E-PUCH information the signature sequence that E-HICH is corresponding, is that NACK message is replied in non-confirmation if NodeB determines the response message that need to send to UE on E-HICH, and NodeB issues UE with the former sequence of described signature sequence.

3. method as claimed in claim 2, is characterized in that, described NodeB issues UE with the former sequence of described signature sequence and comprises:

NodeB becomes symbol sebolic addressing to issue UE described former sequence modulation.

4. the dispensing device of a response message, is characterized in that, this device comprises response message type determination module and ACK message transmission module;

Described response message type determination module, determine need to be ACK message to the response message that UE sends after, send to the ACK message transmission module and determine indication;

Described ACK message transmission module after receiving described definite indication, sends empty sequence to UE;

Wherein, described ACK message transmission module after receiving described definite indication, does not send any information to UE on E-HICH, and perhaps, after receiving described definite indication, sending value to UE on E-HICH is the symbol sebolic addressing of full 0.

5. the detection method of a response message, the method comprises: UE carries out to the response message that receives the soft-decision bit sequence that demodulation estimates to obtain not containing idle bit, calculates the correlation c between the described soft-decision bit sequence signature sequence corresponding with response message;

It is characterized in that, the method is applied in the mobile communication system that sends according to claim 1 response message, and the method also comprises:

UE is according to p=|c| ²Calculate the signal power value p of response message, if p 〉=k σ ²What determine the NodeB feedback is NACK message, otherwise definite NodeB feedback is ACK message;

Wherein, k〉1, σ ²It is noise power-value.

6. the checkout gear of a response message, be applied in the mobile communication system that sends according to claim 1 response message, it is characterized in that, this device comprises signal power detection module and response message type determination module;

Described signal power detection module carries out to the response message that receives the soft-decision bit sequence that demodulation estimates to obtain not containing idle bit, calculates the correlation c between the described soft-decision bit sequence signature sequence corresponding with response message, according to p=|c| ²Calculate the signal power value p of response message, the performance number p that calculates is issued described response message type determination module;

Described response message type determination module judges whether p is greater than or equal to k σ ², if so, what determine the NodeB feedback is NACK message, otherwise definite NodeB feedback is ACK message;

Wherein, k〉1, σ ²It is noise power-value.

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