CN1720698A - Application of Reliability Detection of Channel Quality Indicator and Outer Loop Power Control - Google Patents

Abstract

A method for improving the reliability of a Channel Quality Indicator (CQI) in a wireless communication network begins with receiving the CQI information, which is then decoded, and a decision metric is calculated for each symbol in the CQI information, a maximum decision metric and a second largest decision metric of the CQI information are determined, and the reliability of the CQI information is determined by comparing the two largest decision metrics. The method may be applicable to high speed downlink packet access for time division duplex, frequency division duplex or other transmission modes.

Description

Application of Reliability Detection of Channel Quality Indicator and Outer Loop Power Control

technical field

The present invention generally relates to channel quality measurement in wireless communication, and in particular, the present invention relates to a method and device for reliably detecting channel quality, and its application to external power loop control.

Background technique

Today, third generation (3G) mobile communication systems have been standardized to implement efficient and high-throughput downlink (DL) packet data transmission mechanisms. In the context of the Universal Mobile Telecommunications System (UMTS) Wideband Code Division Multiple Access (W-CDMA) based on the 3G system, this packet transmission technology usually refers to High Speed Downlink Packet Access (HSDPA). Both (FDD) and Time Division Duplex (TDD) are available, and they perform at chip rates of 1.28Mcps and 3.84Mcps.

The next characteristic features are the proven effectiveness and achievable data processing capabilities for HSDPA: Adaptive Modulation and Coding (AMC), Fast Hybrid Automatic Repeat Request (HybridARQ), Uplink for real-time DL channel quality Fast feedback mechanism for UL reporting, wireless resource efficient packet scheduling mechanism, and fast short-term DL channel assignment.

Yet another distinguishing feature of HSDPA is that for the data rate and the amount of DL transmit (Tx) power an HSDPA base station assigns to a wireless transmit and receive unit (WTRU) is a function of the real-time channel state of the WTRU . For example, a user close to the base station may actually receive a high HSDPA data rate with low transmit power, a user far away from the base station, or a user facing unfavorable channel conditions, for the same or more A large amount of allocated DL transmit power can only be done at a reduced data rate.

The real-time HSDPA data rate that a particular user can actually perform depends generally on 1) path loss, which is based on the distance from the serving base station; 2) shadowing; 3) real-time fast fading conditions; 4) Interference at the user's receiving end, which is caused by other users appearing in the system; and 5) channel status of the user, such as speed and propagation environment. In other words, the HSDPA data rate is a function of the DL signal-to-interference ratio (SIR) experienced by the user, which is based on all these factors, and which is expressed in terms of the DL data rate that the user can sustain, The user's DL SIR generally changes over time as a function of these factors.

The DL SIR experienced by the user or any similar representative routing metric value (metric value) with this function, such as BLER, BER or knowledge of the received signal power combined with the received DL interference, for the HSDPA base station to ensure Highly efficient HSDPA operation is indispensable. CDMA systems utilizing HSDPA therefore employ a fast UL layer 1 (L1) signaling mechanism that allows a WTRU to periodically report the DL SIR to the base station with a fast UL channel quality indicator (CQI). Current FDD specifications allow the configuration of periodic CQI feedback in the UL to be sent every 0 (when CQI reporting is off), 2, 4, 8, 10, 20, 40, 80 or 160 milliseconds, however, TDD systems There is no periodic CQI feedback, so the CQI is replaced by an ACK/NACK on the high-speed shared control channel (HS-SICH), whenever a DL data field of the HSDPA data channel (HS-DSCH) Sent when a block is received by a WTRU. In W-CDMA FDD and TDD modes, this mechanism is also commonly referred to as a CQI report.

The method of measuring the CQI implemented at a particular WTRU is not standardized, and is open to manufacturing vendors, but neither is the method of how to obtain the reported CQI value. In the FDD standard, there is a table (shown in 3GPP TS 25.321, Medium Access Control (MAC) Protocol Specification, 5.4.0 (2003-03)) that roughly lists some 30CQI values corresponding to gradually higher data rates, and consequently higher and higher DL SIRs. The reported CQI value in FDD is obtained as follows (according to 3GPP TS 25.214, Physical Layer Procedure (FDD), v5.4.0(2003-03), Section 6A.2): "The UE shall report the highest The CQI value for a single HS-DSCH subframe, which is formatted with the transport block size quantity encoded and modulated by HS-PDSCH, is equivalent to the reported CQI value or lower, which is able to end in a In the three-slot reference period of the first slot, which is before the start of the first slot, in which the reported CQI value is sent, the probability of error for the transport block will not exceed 0.1". In TDD, the report is different, the transport block size is only at the last received transmission gap (the number of slots at which the last HS-DSCH was received), and the transmission will produce a block error rate of 0.1 will be reported when.

For example, in the current fifth edition of W-CDMA FDD, the CQI is a 5-bit information bit sequence, which is encoded in a (20, 5) Reed-Muller encoding method, and encoded The 20-bit length sequence will be sent in the UL of a high-speed dedicated physical control channel (HS-DPCCH), each user has an individual HS-DPCCH, which has an adjustable CQI report cycle (feedback rate), A user can report the CQI value on the HS-DPCCH even if the user does not receive data on the HS-DSCH.

As another example, in the current W-CDMA TDD version (3.84Mcps or high chip rate (HCR) TDD), the CQI is a 10-bit information bit sequence, which is based on a (32, 10) The Reed-Muller encoding method is used for encoding, and the encoded 32-bit coded sequence will be sent on the UL as part of the HS-SICH. Under the current TDD, a CQI transmission can only occur if the used or have previously received the data on the HS-DSCH in the frame.

Since the reliability of a WTRU's CQI report has an impact on HSDPA operation, it is very important for an HSDPA base station to have a means to determine if a CQI is received in error. By discarding any erroneously received CQI, the HSDPA base station can avoid this situation , wherein it selects the user's DL data rate and the corresponding transmission power, which is not suitable for the DL channel state faced by the user. Incorrect CQIs will reduce the overall data throughput of the HSDPA user and cause high interference to other users in the system, which will reduce the effectiveness of the HSDPA service in the W-CDMA system.

In addition, too many wrong CQIs received from a particular user are an indication that the user's DL transmit power setting is imprecise, and the base station or another access network node, for example, the base station or another access network node An accessing network node, such as a radio network controller (RNC), will take appropriate action. For example, the RNC can send a higher target UL SIR signal to the user in order to increase its UL transmit power and lower the error rate on the HS-DPCCH (in FDD) or HS-SICH (in TDD), thus This form of RNC function is usually regarded as outer loop power control.

Error detection for receiving UL transmissions in W-CDMA FDD and TDD modes is typically done by performing a cyclic redundancy check (CRC), i.e. when a decoding error occurs at the base station, a The bit sequence is a reliable pointer to decoding errors. In order for the CRC to be effective in error detection, the length of the CRC must be significantly larger. However, in order to avoid unnecessary processing, the ratio of the CRC length to the actual data length must be very small. In typical applications , the data may be a sequence of hundreds of bits, while the CRC may only have 8-24 bits.

Unfortunately, HS-DPCCH (FDD) and HS-SICH (TDD) are fast L1 UL signaling channels which do not contain any UL data or a sufficient number of L1 signaling bits to efficiently utilize CRC, in order to provide sufficient For the error detection performance, the CRC must have at least the same size as the data field to check. Under these considerations, the current HSDPA standard does not use CRC on HS-DPCCH (FDD) and HS-SICH (TDD) .

Therefore, based on the existing technology, the network (base station or RNC) does not have the ability to reliably determine whether a CQI is received in error, the network can only configure the WTRU to use a high enough UL transmit power, which is based on a UL target SIR and "experience" from simulations, so that erroneous results are unlikely to occur, and are not harmful to the operation of the HSDPA system, so it would be very convenient to provide a method of reliably detecting and reporting the correctness of the received CQI value helpful.

Contents of the invention

The method of the present invention enables the base station to determine the degree of CQI reliability. The present invention provides a useful reliability detection mechanism for CQI reports received from a WTRU by an HSDPA base station, and provides a received CQI quality report mechanism from the HSDPA base station to the RNC for tracking and adjustment UL transmit power setting for a WTRU.

A method for improving the reliability of a channel quality indicator (CQI) information in a wireless communication network begins with receiving and decoding the CQI information. In the CQI information, the routing metric value for each symbol decision will be calculated. A maximum decision routing metric value and a second largest decision routing metric value are determined. The reliability of the CQI information is determined by comparing the maximum The decision routing metric value and the second largest decision routing metric value are determined.

A method for increasing the reliability of a received information representing the quality of a transmission channel in a wireless communication network by receiving a channel quality indicator (CQI) from a wireless sending and receiving unit ) information, the CQI information is then decoded, and at least two different values representing the decoded CQI information will be obtained, and the reliability of the CQI information is determined by comparing the at least two values.

A system for determining the quality of a transmission channel in a wireless communication network, the wireless communication system comprising at least one wireless transmit and receive unit (WTRU) and a base station, the WTRU comprising a generator to generate a channel Quality indicator (CQI), the base station includes a receiving device to receive the CQI, a decoding device to decode the CQI, and a calculating device to calculate a first determined route measurement value and a second determined route measurement value of the decoded CQI , and the comparing means is used for comparing the first and second decision routing metric values to determine whether the CQI contains an error.

An integrated circuit constructed according to the present invention, comprising an input configured to receive a channel quality indicator (CQI) information, decoding means to decode the CQI information, and computing means to calculate a result of the decoded CQI A first decision routing metric value and a second decision routing metric value, and comparing means for comparing the first decision routing metric value and the second decision routing metric value to determine whether the CQI information contains an error.

Description of drawings

More detailed understanding of the present invention can be obtained from the description of the following embodiments, which are given as examples and understood in conjunction with related drawings, wherein:

Fig. 1 is a flowchart of the method according to the present invention, which is applicable to FDD and TDD;

Fig. 2 is a flowchart of an embodiment of the method according to the present invention, which is applicable to FDD and TDD;

FIG. 3 shows an embodiment of CQI reliability detection, which is applicable to FDD and TDD;

FIG. 4 is a diagram of additive white Gaussian noise (AWGN) channel HS-SICH results from TDD simulations; and

Fig. 5 is a diagram, which is the result of WG4 test case 2-channel HS-SICH, which is from TDD simulation.

Detailed ways

As used and described hereinafter, a WTRU includes but is not limited to a user device; a mobile station; a fixed or mobile subscriber unit; a pager or any form of device that can operate in a wireless environment. When discussed later, a base station includes but is not limited to a Node B; a Node Controller; an Access Point or any form of interface device in a wireless environment.

FIG. 1 shows a method 100 for determining the reliability of a CQI and its application to an out-of-loop power controller according to the present invention. The method 100 starts by initializing a time slot timer and several counters, such as total HS-SICHs received, wrong HS-SICHs received and number of missed HS-SICHs (step 102), the CQI is received ( Step 104) and decoding (step 106), the two maximum decision routing count values are evaluated to determine whether they are lower than the threshold value (step 114), if the difference is lower than the threshold value, then the CQI has errors Possibly, and will therefore be discarded (step 116).

If the difference meets or exceeds the threshold value, then the CQI will be assumed to be valid (step 118), and in the next step, the counter will be incremented (step 120), and no matter whether the time gap has reached the terminal will complete a Judgment (step 122), of course, the flowchart will return to step 104; the loop of steps 104-120 will continue to repeat, regardless of the value of the counter or whether the time slot has terminated.

If the time slot has terminated (step 122), then no matter whether the counter meets or exceeds the threshold value, a decision (step 124) will be completed, if the counter is equal to or greater than the threshold value, the RNC will send a signal ( Step 126), the RNC then sends the WTRU signal to adjust the UL transmit power (step 128), whereupon the method terminates (step 130), if the end of the time slot has not been reached (step 122), or if the counter is low At the threshold (step 124), the method also terminates (step 130).

It is worth noting that the difference judgment in step 112 can also be used when the routing measurement value is logarithmic, that is, when it is decibels. If the routing measurement value is a pure number, then steps 112 and 114 can be as follows Column format modification. A ratio of the maximum decision route metric to the second decision route metric is calculated (step 112), and the ratio is compared to the threshold (step 114).

An approximate alternative would be to include an additional Iub to signal a simple periodic report of the total number of HS-SICHs received, the number of erroneous HS-SICHs received and the number of missed HS-SICHs for a fixed time period , and reporting these numbers is independent of the error threshold, this type of periodic reporting will add more Iub signaling, but is less complex to implement in Node B.

FIG. 2 shows another method 200 for determining the reliability of a CQI and its application to out-of-loop power control according to the present invention. The method 200 begins by initializing several counters, such as total HS-SICHs received, wrong HS-SICHs received, and number of missed HS-SICHs (step 202), the CQI is received (step 204) and decoded (step 206), for each symbol in the CQI, a decision routing metric value is calculated (step 208), the two largest decision routing metric values are selected (step 210), and the two largest The difference between the decision routing metric values is determined (step 212), the difference between the two largest decision routing metric values is evaluated to determine whether it is below a threshold (step 214), if the difference is low If the CQI is lower than the threshold, the CQI may be wrong, so it will be discarded (step 216).

If the difference exceeds the threshold value, then the CQI will be assumed to be valid (step 218), and in the next step, the counter will be incremented (step 220), and no matter whether the time gap has reached the terminal, a decision will be completed (step 220). 222), of course, the flowchart will return to step 204; the loop of steps 204-220 will continue to repeat, regardless of the value of the counter.

If the counter is equal to or greater than the threshold, the RNC sends a signal (step 224), the RNC then sends the WTRU a signal to adjust the UL transmit power (step 226), and the method terminates (step 228), If the counter is below the threshold (step 22224), the method also terminates (step 228).

When the base station decodes the received 32-bit code character (steps 106, 206), the output of the decoding procedure can be regarded as one of N infallible hypotheses, wherein the number n of information bits is related to M, which is M= 2n (n=10 in TDD), in other words, one of the M symbols will be sent by the WTRU to the base station. The hypothesis testing at the base station selects the most appropriate member of the M symbol alphabet, which is then converted back to n information bits, making it represent the symbol, ie, the encoded code character.

Different decision algorithms exist to decide what is most likely to represent the received symbol, which is usually different from what we know. For example, if a particular signal is more likely to be sent, incorporating common knowledge into the decision algorithm provides an advantage over an algorithm that assumes that all symbols are generally identical was sent out to further illustrate that in the context of FDD, the decoder can operate as 32 suitable filters with one filter per symbol, where each symbol has a specific waveform (chip/bit sequence ), each suitable filter correlates to the received waveform corresponding to a specific symbol, the correlative output from each suitable filter is essentially a peak corresponding to energy, a large The crest of the sign indicates "it is very likely that this is the symbol sent" (where a code character is equal to a sequence of chips), and a small correlation peak indicates "this cannot be the correct symbol", and then, the 32 The largest of the obtained peaks will be chosen and it will be judged as the peak that should be sent, because this is a statistical hypothesis test, and on average, the sign of the judgment is the highest that can be made. An example of such a procedure is shown in Figure 3 for a good decision. The decoding process at the base station converts the received sequence of channel bits into a stationary decision routing metric for each symbol possibly outside the MCQI range. The CQI quality indicator can be implemented on a single integrated circuit or as separate components.

In general, the information bit sequence (the CQI character) is n bits long, and the CQI character is encoded as a (N, n) Reed-Muller code, which is encoded by M(=2n)N bits long sequence of bits. For example, in TDD, with n=10 information bits, which results in 1024 (M=210) possible encoding characters each of length N=32 bits, the procedure for encoding the CQI on the HS-SICH provides For some samples, it is planned that each of the N code bits becomes N*4=L channel bits, and each channel bit is spread by a spreading factor of 16 (that is, a 16-chip long spreading sequence) , the result is L*16=C chips. In TDD, the CQI character is usually coded by a (32,10) Reed-Muller code, and n=10, N=32, L=128, C=2048. General omissions aside, the principle of the method is equally valid for (16,5) encodings of FDD.

As will be appreciated by those skilled in the art, any other form of coding combination can also be used, and the invention is not limited to the setting scheme described hereinabove, a well-known (N , n) encoding scheme, and there are optional parameters n and N that can be used in the present invention, which is to determine the ratio of its information bits to encode the channel bits. For example, a Reed-Muller first or second order code or a Reed-Solomon code may also be used. The particular coding combination for the (N,n) bits is not obvious, as long as the decoder can compute discrete decision routing metrics for each symbol, and each symbol can be sent on all channels.

Steps 110 and 112 of Fig. 1 and steps 210 and 212 of Fig. 2 represent one possible method for determining the reliability of the CQI, and many other methods of determining the reliability of the CQI are also possible, for example, the maximum determination route metric The ratio of the value to the next largest value, or the difference in decibels (10log(ratio)) between the two measured values can also be used. To illustrate with some simple equations, if P _max represents the largest observed peak value and P _second represents the second largest observed peak value, the ratio (R) can be expressed as R=P _max /P _second or log(P _max )/log(P _second ) or more generally f(P _max /P _second ). Another method proposed to determine the reliability of CQI is the ratio of the energy of the maximum determined routing metric value to the energy sum or weighted sum of M-1 other determined routing metric values, for example, P _i (i= 1 _... 32) is the peak value observed at the output of the Reed-Muller decoder, P _max is the maximum value of Pi, and the measured R is expressed as R=P _max /(∑P _i - P _max ).

By comparing the stable decision routing metrics of the decoded CQI symbols, the base station can use a simple threshold-based decision mechanism in order to decide whether the accepted CQI symbols are likely to have errors or not (step 114, 214), for example, if the difference between the largest and second largest route meter values is less than 1 dB, there is a very high probability (typically greater than 95%) that the CQI is wrong and the The CQI should be discarded, other difference values can also be used, but the relative probability of the CQI being wrong will be reduced, a better difference range is between 0-2 dB, so that the probability of the CQI being in the wrong state high enough.

Taking TDD as an example, the results of an embodiment of the CQI reliability detection method in terms of the ability to detect CQI errors are shown in FIG. 4 and FIG. 5 . The graphs in Figures 4 and 5 include BER after MUD, ACK->NACK BER, NACK->ACK BER, discarded CQIs, correct but discarded CQIs, and incorrect but not discarded CQIs. The graph also includes RMF BER , which is the first bit of a 10-bit length CQI character and indicates the proposed modulation format (either QPSK or QAM). The icon shows the BER of the single bit, the RTBS contains the other nine information bits in the CQI character, and it represents the proposed transport block configuration, which is the number of information bits in the HS-DSCH transport block , which is the WTRU recommendation that should be sent, the graph shows the character error rate (WER) for the nine bits, which indicates that the nine RTBS bits have only one less chance of error.

The following remarks can be known from Fig. 4 and Fig. 5: 1) The ACK/NACK stable determination threshold is 0.1*signal amplitude; 2) A CQI criterion is discarded, including the highest/second highest correlation in the amplitude 3) erroneous CQIs can be detected immediately; and 4) the ratio of "correct CQIs erroneously discarded" to "erroneous CQIs not discarded" can be easily scaled to achieve the target error value .

Therefore, an advanced CQI range coding can be achieved by the present invention. According to the aforementioned method, when the HS-SICH carries ACK/NACK and the CQI is received, there is no means to know whether the received HS-SICH range (not the ACK/NACK is the CQI) is received in an error state, because it does not have a CRC, if the ACK/NACK is received in an error state, and the Node B does not know this, for example, the Node B may Resend a packet that has been successfully received at the WTRU or discard (unsend) a packet that should have been sent while the WTRU waited an extended time when the packet will never arrive and the memory is empty will be delayed. CQI reliability detection according to the present invention allows the Node B to indicate which received HS-SICHs are reliable and to continue to act appropriately, like retransmissions, as well, for reasonable assurance at all times (when reception < this example 1% of ) for the HS-SICH to be reliable, the HS-SICH needs to be received at a high SNR value, which means that the WTRU must transmit at a high power, because the WTRU does not have that much power and may need For maximum coverage area, the WTRU transmit power must be sufficient to meet an average HS-SICH BER of 0.1. The proposed CQI reliability detection method tracks the current transmit power setting at The WTRU's means and means for adjusting the power setting.

In addition, the reliability detection method can also be used to provide indicators to the HSDPA base station, and the RNC and CQI reports displayed on the HS-SICH/HS-DPCCH to warn the HSDPA base station that the CQI value may be wrong, It is also possible to warn that the delivery to the SIR may be inappropriate via information from the HSDPA base station to the RNC via the Iub/Iur network interface. Simple statistics are provided, such as how many received HS-SICHs from a particular WTRU were declared false based on CQI routing metrics, how many total HS-SICHs were received during the same period, and How many HI-SICHs are claimed need not be sent at all, these functions are usually provided by a CRC, and are now possible due to the CQI reliability test based on the stationary decision routing meter.

According to a specific purpose of the present invention, new information is added to the Iub/Iur network interface to define the number of times a transmission has failed, and the number of silent receptions has occurred, i.e. reporting that a particular WTRU has sent X consecutive UL HS-SICH information is reported without errors.

Upon receipt of a preset number of CQI disqualification indicators for a particular WTRU or HS-SICH channel, either the HSDPA base station or the RNC can take appropriate action, such as changing the power control of the WTRU or the HS-SICH channel parameters, or discard CQIs, and send CQI reports using the aforementioned DL HSDPA. In one embodiment of the invention (shown in Figure 1), counting is performed in 200 ms time slots, in each frame (which is 10 ms long), at most one HS-SICH is received from a WTRU , so at most there are only 20 HS-SICHs in 200 milliseconds, all counters are defined from 0...20 (total received HS-SICHs, wrong HS-SICHs and missed HS-SICHs).

Even though the above examples are for HSDPA TDD, the invention is equally applicable to HSDPA FDD and other transmission formats for improved CQI reliability detection and enhanced outer loop power control, although specific embodiments of the invention have been disclosed and Those skilled in the art can still make many modifications and changes without departing from the scope of the present invention. The above description is only for illustration but not to limit the present invention in any way.

Claims (36)

1. method, it is in order to improving the reliability of a channel quality indicator (CQI) information in a wireless communication network, its step is to comprise:

A) receive this CQI information;

B) decipher this CQI information;

C) a judgement route variable of calculating each symbol in this CQI information;

D) the judgement route variable of judgement one maximum;

E) judge second largest judgement route variable; And

F) by relatively by step d) and e) value that obtained to be to judge the reliability of this CQI information.

2. the method for claim 1, its step more comprises:

G) quantity of the wrong CQI information that in a time gap, received of counting;

When h) finishing in the time slot, a quantity and a threshold value that relatively should mistake CQI information; And

I) if quantity that should mistake CQI information surmounts this threshold value, then send a radio network controller signal to adjust the transmitted power of one wireless transmission/recruiting unit, it is to send this CQI information.

3. the method for claim 1, its step more comprises:

G) quantity of the wrong CQI information that received of counting;

H) a quantity and a threshold value that relatively should mistake CQI information; And

I) if quantity that should mistake CQI information surmounts this threshold value, then send a radio network controller signal to adjust the transmitted power of one wireless transmission/recruiting unit, it is to send this CQI information; And

J) if quantity that should mistake CQIs does not surmount this threshold value, then begin to repeat this method to carry out next CQI from step a).

4. the method for claim 1, its step more comprises:

G) when this comparison can't meet one give standard the time, abandon this CQI information.

5. method as claimed in claim 4, wherein the standard in this step (g) is to judge that for this maximum whether difference between route variable and this second largest judgement route variable is less than a default value.

6. method as claimed in claim 5, wherein this default value is between 0 decibel and 2 decibels.

7. method as claimed in claim 5, wherein this default value is less than 1 decibel.

8. method as claimed in claim 4, wherein the standard in this step (g) is to judge that for this second largest judgement route variable and this maximum whether the difference of ratio of route variable is greater than a default value.

9. the method for claim 1, its step more comprises:

G) periodically via the total quantity of Iub report information CQI message pick-up in a fixed time period, the quantity of mistake CQI message pick-up and the quantity of CQI spill-over.

10. method, it is in order to improving a reliability that receives information, and it is the quality that is illustrated in a transmitting channel in the wireless communication system, and its step is to comprise:

A) receive a channel quality indicator (CQI) information from a wireless transmission and recruiting unit (WTRU);

B) decipher this CQI information;

C) obtain at least two different values, it is the CQI information of this decoding of expression; And

D) relatively this at least two-value to judge the reliability of this CQI information.

11. method as claimed in claim 10, its step more comprises:

E) result based on this step (d) takes an action.

12. method as claimed in claim 11, wherein step (e) comprises provides outer loop power control.

13. method as claimed in claim 10, wherein step (c) comprise obtain this at least two-value be used as expression one and judge the one second a large amount of of a maximum of route variable and this judgement route variable.

14. method as claimed in claim 13, wherein step (d) comprises to calculate and has the judgement route variable of this maximum and to have difference between this second a large amount of judgement route variable, and it is to be unit with the decibel.

15. method as claimed in claim 10, wherein step (d) comprises the ratio of the energy summation of other judgement route variables of this energy and all that calculate the judgement route variable with this maximum.

16. a system, it is that it comprises in order to the quality of judgement transmitting channel in a wireless communication system:

At least one wireless transmission and recruiting unit, it comprises generation device in order to produce a channel quality indicator (CQI);

One base station, it comprises:

Receiving system is in order to receive this CQI;

Code translator is in order to decipher this CQI;

Calculation element judges that in order to one first of the CQI that calculates this decoding route variable and one second judges the route variable; And

Comparison means in order to relatively this first and this second judge that route variable is to judge whether this CQI comprises a mistake.

17. system as claimed in claim 16, it more comprises movement device in order to carrying out an action, and it is response one specific quantity by the CQI mistake that this base station received.

18. system as claimed in claim 17, wherein this movement device comprises in order to the device of outer loop power control to be provided.

19. system as claimed in claim 16, wherein this generation device comprises calculation element, and it is in order to calculate the signal-to-jamming ratio of a down link.

20. system as claimed in claim 16, wherein this first and this second judge that route variable is to be respectively one maximumly to judge a route variable and a second largest judgement route variable.

21. system as claimed in claim 16, wherein this comparison means comprise calculate this first and this second ratio of judging the route variable.

22. system as claimed in claim 16, wherein this comparison means comprise calculate this first and this second difference of judging between route variable.

23. a base station, it is that this system comprises at least one wireless transmission and recruiting unit in order to the quality of judgement transmitting channel in a wireless communication system, and it has generation device in order to produce a channel quality indicator (CQI), and this base station is to comprise:

Receiving system is in order to receive this CQI;

Code translator is in order to decipher this CQI;

Calculation element judges that in order to one first of the CQI that calculates this decoding route variable and one second judges the route variable; And

Comparison means is in order to relatively this first judges that route variable and this second judge that the route variable is to judge whether this CQI comprises a mistake.

24. base station as claimed in claim 23, it more comprises movement device in order to carrying out an action, and it is response one specific quantity by the CQI mistake that this base station received.

25. base station as claimed in claim 24, wherein this movement device comprises in order to the device of outer loop power control to be provided.

26. base station as claimed in claim 23, wherein this first and this second judge that route variable is to be respectively one maximumly to judge a route variable and a second largest judgement route variable.

27. base station as claimed in claim 23, wherein this comparison means comprise calculate this first and this second ratio of judging the route variable.

28. base station as claimed in claim 23, wherein this comparison means comprise calculate this first and this second difference of judging between route variable.

29. an integrated circuit, it comprises:

One input is configured to receive a channel quality indicator (CQI) information;

Code translator is in order to decipher this CQI information;

Calculation element judges that in order to one first of the CQI that calculates this decoding route variable and one second judges the route variable; And

Comparison means is in order to relatively this first and second judges that route variable is to judge whether this CQI information comprises a mistake.

30. integrated circuit as claimed in claim 29, wherein this first and this second judge that route variable is to be respectively one maximumly to judge a route variable and a second largest judgement route variable.

31. integrated circuit as claimed in claim 29, wherein this comparison means comprise calculate this first and this second ratio of judging the route variable.

32. integrated circuit as claimed in claim 29, wherein this comparison means comprise calculate this first and this second difference of judging between route variable.

33. an integrated circuit, it comprises:

One input is configured to receive a channel quality indicator (CQI) information;

One Reed-Muller decoder is to decipher this CQI information;

One computational discrimination route variable device judges that in order to one first of the CQI that calculates this decoding route variable and one second judges the route variable; And

One compares to determine route variable device in order to relatively this first and second judges that route variable is to judge whether this CQI information comprises a mistake.

34. integrated circuit as claimed in claim 33, wherein this first and this second judge that route variable is to be respectively one maximumly to judge a route variable and a second largest judgement route variable.

35. integrated circuit as claimed in claim 33, wherein this compare to determine route variable device calculate this first and this second ratio of judging the route variable.

36. integrated circuit as claimed in claim 33, wherein this compare to determine the route metering device calculate this first and this second difference of judging between route variable.

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