CN1720698A - Reliability detection of channel quality indicator (CQI) and application to outer loop power control - Google Patents

Abstract

The present invention provides a method for improving the reliability of a channel quality indicator (CQI) message in a wireless communications network begins with receipt of the CQI message. The CQI message is then decoded, and a decision metric value for each symbol in the CQI message is computed. A largest decision metric value and a second largest decision metric value for the CQI message are determined. The reliability of the CQI message can be determined by comparing the two largest decision metric values. This method may be applicable to high-speed downlink packet access in time division duplex, frequency division duplex, or other modes of transmission.

Description

The application of the reliability detection of channel quality indicator and outer loop power control

Technical field

The present invention measures about the channel quality in radio communication, and the present invention is especially about a kind of method and apparatus of reliability detection channel quality, with and the application of external power circuit controls.

Background technology

Now, the standardization of the third generation (3G) mobile communication system with carry out efficient and high throughput under line link (DL) packet data transmission mechanism.Under background based on global mobile communication system (UMTS) Wideband-CDMA (W-CDMA) of 3G system, this packet transport technologies typically refers to high-speed downlink packet access (HSDPA), HSDPA all is feasible under Frequency Division Duplexing (FDD) (FDD) and time division duplex (TDD), and it is to carry out with the spreading rate of 1.28Mcps and 3.84Mcps.

Next distinctive feature is to be admitted validity of HSDPA and attainable data-handling capacity: adaptive modulation and coding techniques (AMC), the automatic repetitive requests of rapid mixing (HybridARQ), in order to quick feedback mechanism, the Radio Resource of up link (UL) report of real-time DL channel quality effectively divide into groups scheduling mechanism and fast short-term DL channel assign.

It is the total amount that sends (Tx) power for this data rate and DL that yet another kind of HSDPA can be used as the feature of difference, and it is function for the Real-time Channel state of this WTRU that a HSDPA base station branch is tasked a wireless transmission and recruiting unit (WTRU).For instance, user near this base station can but receive a high HSDPA data rate with low transmitted power on the spot, user away from this base station, or a user who faces unfavorable channel status, only can go on for identical or more substantial assignment DL transmitted power with the data rate of a reduction.

This real-time HSDPA data rate that can make a specific user positively carry out, what it generally relied on is 1) path loss, it is based on the distance with servo base station; 2) cover; 3) state that fails real-time; 4) interference of user's receiving terminal, it is to be appeared in the system by other user to cause; And 5) this user's channel status, for example speed and communication environments.In other words, this HSDPA data rate is the function of the DL signal-to-jamming ratio (SIR) that suffers for this user, it is based on all these factors, and it is to show with retainable this DL data rate of this user, this user's DL SIR generally can change in time, just as a function of these factors.

DL SIR that the user suffered or any similar representative route variable (metric value) with this function, for example BLER, BER or the knowledge of the received signal power that combines with reception DL interference are indispensable for the HSDPA base station to guarantee that highly effective HSDPA operates.Utilize the cdma system of HSDPA therefore to adopt a kind of quick UL layer 1 (L1) to send signaling mechanism, it is to allow a WTRU periodically to report DL SIR to this base station with a kind of channel quality indicator of UL fast (CQI).The configuration that existing FDD specification allows this periodicity CQI feedback in UL is sent per 0 (when CQI reports when closing), 2,4,8,10,20,40,80 or 160 milliseconds the time, yet, do not possess periodically CQI feedback in the TDD system, therefore this CQI replaces with a kind of ACK/NACK on High-Speed Shared Control Channel (HS-SICH), when being received by a WTRU, the DL block at this HSDPA data channel (HS-DSCH) sends, at W-CDMA FDD and tdd mode, this mechanism is also regarded the CQI report usually as.

Measurement is in the not standardization of method of the CQI of a specific WTRU implementation, and the really open supplier of manufacturing carries out, and still how to obtain the also not standardization of method of the CQI value of this report.In the FDD standard, there is a form (to be shown in 3GPP TS 25.321, medium access control (MAC) protocol specification book is among the 5.4.0 (2003-03)) list some 30CQI values roughly corresponding to the data rate that increases gradually, and thereby more and more higher DL SIRs.This report CQI value in FDD is to be obtained (according to 3GPP TS 25.214 by following mode, physical layer program (FDD), v5.4.0 (2003-03), the 6A.2 joint): " UE should report that CQI value the highest in the tabular is to a single HS-DSCH frame; it is this transport block size quantity format with HS-PDSCH coding and modulation; it is to be equivalent to this report or lower CQI value; it is to finish three time slots of first time slot with reference to interim in one; it is before this first time slot begins; wherein this report CQI value is sent out, and it will can not surpass 0.1 for this transport block mistake probability ".In TDD, this report is different, and this transport block size is only in its transmission gap in last reception the quantity of HS-DSCH reception place time slot (last), and just can report should transmission can produce one 0.1 block error rate the time.

For instance, in the 5th edition existing W-CDMA FDD, this CQI is the signal bit sequence for one 5 bit length, it is with a kind of (20,5) the Reed-Muller coded system is encoded, the 20 bit length sequences that coding comes out can be sent in the UL of a High-Speed Dedicated Physical Control Channel (HS-DPCCH), each user has other HS-DPCCH one by one, it is to have an adjustable CQI report circulation (energy feedback rate), user can be reported in this CQI value on this HS-DPCCH, even this user does not receive the data on HS-DSCH.

For another example, in existing W-CDMA TDD version (3.84Mcps or high spreading rate (HCR) TDD), this CQI is the signal bit sequence for one 10 bit length, it is with a kind of (32,10) the Reed-Muller coded system is encoded, the coded sequence of 32 bit lengths that coding comes out can be sent on the UL that is considered as the HS-SICH some, under existing TDD, only can occur in this user in advance in the received frame during data on this HS-DSCH if a CQI sends.

Because the reliability of the CQI of WTRU report has the influence to the HSDPA operation, therefore a HSDPA base station has once judging whether very important of the wrong device that receives of CQI, by abandoning any wrong CQI that receives, this situation can be avoided in this HSDPA base station, wherein it can select user's DL data rate and corresponding through-put power, and it is to be not suitable for the DL channel status that this user faces.The CQIs of mistake can lower the data throughput of this HSDPA to the user, and can produce the interference of height to other user in the system, and it can decrease in the validity of HSDPA service in the W-CDMA system.

In addition, too much from a specific wrong CQI person of being to use who receives with the person a DL transmission power determining and a coarse sign, and this base station or another access network node, for example and this base station or another access network node, for example radio network controller (RNC) will be taked suitable action.For instance, RNC can send the UL sir signal of a higher target to this user, so that increase its UL transmitted power and will hang down error rate at HS-DPCCH (among the FDD) or HS-SICH (among the TDD), the RNC function of this kind form is considered as outer loop power control usually.

The error detection that receives the UL transmission under W-CDMA FDD and tdd mode is finished by carrying out a kind of Cyclical Redundancy Check (CRC) typically, that is when at the base station decoding error, a bit sequence of following from data is the pointer of a reliable decoding error.In order to allow CRC that active force is arranged in error detection, the length of CRC must be significantly big a lot, yet, for fear of having unnecessary process, CRC length then needs very little to the ratio of real data length, on typical application, these data may be the sequences of hundreds of position, and CRC may have only the 8-24 position.

Unfortunately, HS-DPCCH (FDD) and HS-SICH (TDD) send signaling channel for quick L1 UL, it is that the L1 that does not comprise any UL data or sufficient amount sends signal bits effectively to utilize CRC, for the error detection performance of sufficient amount is provided, CRC must normally have the same size just can check with the data field position at least, under these were considered, existing HSDPA standard did not go up use CRC at HS-DPCCH (FDD) and HS-SICH (TDD).

Therefore, based on existing technology, network (base station or RNC) does not possess reliable judgement, and whether whether a CQI is by wrong reception, network can only dispose this WTRU and use a sufficiently high UL transmitted power, it is with a UL target SIR and derive from emulation " experience ", so that wrong result unlikely takes place, and do not have injury for the operation of HSDPA system yet, therefore a kind of reliability detection is provided and reports that the method for the CQI value correctness that receives will be helpful.

Summary of the invention

Method of the present invention makes the base station can judge the degree of CQI reliability.The invention provides the reliability detection mechanism that a kind of useful CQI reports, it is to be received from a WTRU by the HSDPA base station, and a CQI quality report mechanism that receives is provided, and it is to this RNC, so that follow the trail of and adjust the UL transmission power determining of a WTRU by this HSDPA base station.

A kind of method, it is that it starts from receiving and deciphering this CQI information in order to the reliability of enhancement one channel quality indicator (CQI) information in a wireless communication network.The route variable of each sign determination all can be calculated in CQI information, the judgement route variable of a maximum and second largest judgement route variable are determined that the reliability of this CQI information is by relatively should maximum judging that route variable and this second largest judgement route variable decided.

A kind of method, it is to represent one of a transmission channel quality to receive the reliability of information in order to promote one in a wireless communication network, it is by receiving a channel quality indicator (CQI) beginning that information opens from wireless transmission and recruiting unit, this CQI information is then decoded, and can obtain at least two different values of represent the CQI information of this decoding, the reliability of this CQI information is to determine by these at least two values relatively.

A kind of system, it is in order to judge the quality of a transmission channel in a wireless communication network, this wireless communication system comprises at least one wireless transmission and a recruiting unit (WTRU) and a base station, this WTRU comprises generator to produce a channel quality indicator (CQI), this base station comprises receiving system to receive this CQI, code translator is to decipher this CQI, calculation element judges that to calculate one first of this decoding CQI 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 comprises a mistake.

A kind of integrated circuit that constitutes according to the present invention, it comprises an input, it is to be configured to receive a channel quality indicator (CQI) information, code translator is to decipher this CQI information, calculation element judges that to calculate one first of this decoding CQI route variable and one second judges the route variable, and comparison means is so that relatively this first judges that route variable and this second judge that the route variable is to judge whether this CQI information comprises a mistake.

Description of drawings

Details how of the present invention is understood can be by the description gained of following embodiment, and it is give an example and cooperate correlative type with understanding, wherein:

Fig. 1 is the flow chart for the method according to this invention, and it is to be applicable to FDD and TDD;

Fig. 2 is the flow chart according to the embodiment of the inventive method, and it is to be applicable to FDD and TDD;

Figure 3 shows that an embodiment of CQI reliability detection, it is to be applicable to FDD and TDD;

Fig. 4 is that it is white Gauss noise (AWGN) the channel HS-SICH achievement of adding for one graphic, and it is from TDD emulation; And

Fig. 5 is that it is WG4 test cases 2 channel HS-SICH achievements, is from TDD emulation for one graphic.

Embodiment

As after employed and describe, WTRU comprises but is not limited to user's device; One travelling carriage; One fixing or mobile subscriber unit; One calling set or can be in the following any type of device of operation of wireless environment.When after talk about, a base station comprises but is not limited to a Node B; One site controller; One access point or under a wireless environment any type of interface arrangement.

Figure 1 shows that a kind of method 100 in order to judging the reliability of a CQI, with and be applied to according to the present invention outside the power loop controller.Beginning of this method 100 is by one time of initialization gap timer and several counters, the HS-SICHs quantity (step 102) that for example total HS-SICHs receives, mistake HS-SICHs receives and missed, this CQI is received (step 104) and decoding (step 106), these two maximum judges the route count value is evaluatedly whether to be lower than threshold value (step 114) to judge, if difference is lower than threshold value, then therefore this CQI will be dropped (step 116) with regard to vicious possibility.

If difference meets or surpass threshold value, then this CQI will be assumed that effectively (step 118), next step, this counter will increment (step 120), and all can finish a judgement (step 122) no matter whether this time slot has reached terminal, certainly, flow chart will be got back to step 104; The loop of step 104-120 will continue to repeat down, and no matter whether value or this time slot of this counter stop.

If this time slot has stopped (step 122), then all can finish a judgement (step 124) no matter whether this counter meets or surpass threshold value, if this counter is equal to or greater than this threshold value, this RNC will send signal (step 126), this RNC then sends this WTRU signal to adjust this UL transmitted power (step 128), so this method promptly stops (step 130), if do not reach the terminal point (step 122) of time slot as yet, if or this counter is lower than this threshold value (step 124), then this method also stops (step 130).

It should be noted that difference in the step 112 judge also can be used for when this route variable be during for logarithm, that is be during for decibel, if this route variable is to be pure digi-tal, then step 112 and 114 can be with following form modification.This maximum judges that the ratio of route variable and this second judgement route variable is calculated (step 112), and this ratio is to compare (step 114) with this threshold value.

A kind of approximate alternative method is to comprise the signal that extra Iub sends the simple periodic report, it is sum, the quantity of mistake HS-SICHs reception and the quantity that HS-SICHs misses at a fixed time period that HS-SICHs receives, and report that these quantity and error thresholds value are irrelevant, the periodic report of this type will increase more Iub and send signal, but carry out more uncomplicated in Node B.

Figure 2 shows that another kind of method 200 is in order to the reliability of judging a CQI and power loop control outside being applied to according to the present invention.Beginning of this method 200 is by several counters of initialization, for example total HS-SICHs receives, the HS-SICHs quantity (step 202) that mistake HS-SICHs receives and missed, this CQI is received (step 204) and decoding (step 206), to each symbol in CQI, one judges that the route variable is calculated (step 208), the judgement route variable of these two maximums is selected (steps 210), and the difference between the judgement route variable of these two maximums is to be determined (step 212), difference between the judgement route variable of these two maximums is evaluated to judge whether to be lower than a threshold value (step 214), if this difference is lower than this threshold value, then therefore this CQI will be dropped (step 216) with regard to vicious possibility.

If difference surpasses threshold value, then this CQI will be assumed that effectively (step 218), next step, this counter will increment (step 220), and all can finish a judgement (step 222) no matter whether this time slot has reached terminal, certainly, flow chart will be got back to step 204; The loop of step 204-220 will continue to repeat down, and no matter the value of this counter.

If this counter is equal to or greater than this threshold value, this RNC will send signal (step 224), this RNC then sends this WTRU signal to adjust this UL transmitted power (step 226), so this method promptly stops (step 228), if this counter is lower than this threshold value (step 22224), then this method also stops (step 228).

Decipher the 32 bit code character (steps 106 that received when this base station, 206), the output of this translator can be regarded as N does not have one of false assumption, wherein the quantity n of this information bit is relevant with M, it is that M=2n is (in TDD, n=10), in other words, a meeting in the M symbol is sent to the base station by WTRU.The most suitable member in this hypothesis test selection M of this base station symbol letter then converts it back to the n information bit, makes it represent this symbol, that is the coding codeword symbol.

Different decision algorithm exists judging what is the symbol that the most probable representative receives, and it is the symbol that is different from usually known to us.For instance, if it is more likely thing that a signal specific is sent, then merge known general knowledge and provide an advantage of comparing with another algorithm in this decision algorithm, this algorithm is that all symbols of hypothesis all are to be sent in the same manner usually, illustrate further, under the FDD background, this decoder can be operated as 32 suitable filters, it is that each symbol all has a filter, wherein each symbol has a specific waveform (chips/bit sequence), each suitable filters is associated with the waveform of this reception, its waveform corresponds to a specific symbol, this relevance output from each suitable filters is a crest corresponding to energy basically, a very big crest is represented " probably this is the symbol that is sent " (wherein a code character equals a chip sequence), and a little relevance crest is represented " this can not be correct symbol ", then, maximum in the crest of these 32 an acquisitions meeting is selected, and it can be judged as this crest that is sent, because this is a statistical hypothesis test, average going up, the symbol of this judgement is the optimal decision that can make, and the embodiment of this program is shown in Fig. 3.The sequence of the channels bits that this translator conversion in this base station is received becomes judges that stably the route variable may be at the extraneous symbol of M CQI in order to each, and this CQI quality indicator can be implemented on the assembly of a single IC for both or conduct separation.

In general, this signal bit sequence (this CQI character) is long for the n position, and this CQI character is to be encoded as one (it is by the M (=2n) bit sequence of N position long codes for N, n) Reed-Muller coding.For instance, in TDD, the n=10 information bit is arranged, it causes 1024 (M=210) each length is the possible code character of N=32 position, the program that goes up this CQI of coding in this HS-SICH provides some samples, its planning becomes the N*4=L channels bits with each this N sign indicating number position, each channels bits be by one be 16 exhibition factor exhibition frequently (that is one 16 long exhibition frequency sequence of chip) frequently, consequently be the L*16=C chip.In TDD, this CQI character is normally with one (32,10) Reed-Muller coded system coding, and n=10, N=32, L=128, C=2048.Bypass general leakage, the principle of this method also is effective for (16,5) coding of FDD similarly.

As have the knack of this skill person will understand, the coded combination of any other form also can be brought use, and the present invention is not limited to this civilian aforesaid setting scheme, a kind of by the known (N of channel coding theorem, n) encoding scheme, and existing alternative parameter n and N can be used in the present invention, it is to judge that the ratio of its information bit is with this channels bits of encoding.For instance, also can use a Reed-Muller first or the second order sign indicating number or a Reed-Solomon sign indicating number.This is specific, and relevant (as long as this decoder can be to the judgement route variable of each sign computation dispersion, and each symbol can be sent on whole channels and gets final product for N, n) Wei coded combination and not obvious.

The step 110 of Fig. 1 and 112 and the step 210 of Fig. 2 and 212 expressions can judge a possibility method of CQI reliability, it also is feasible that many other used the method for having judged the CQI reliability, for instance, the ratio of the judgement route variable of this maximum and second largest value, or the difference between the two route variables also can be used with decibel (10log (ratio)).Illustrate with some simple equations, if P _MaxRepresent this maximum observation crest value, and P _SecondRepresent the observation crest value that this is second largest, this ratio (R) just can be represented as R=P _Max/ P _SecondOr log is (P _Max)/log (P _Second) or more at large with f (P _Max/ P _Second) expression.Another is suggested in order to the method for judging the CQI reliability is to judge energy and the energy summation of other judgement route variable of M-1 or the ratio of weighted sum of route variable for this maximum, for instance, and P _i(i=1...32) be the crest value of observing in the output of Reed-Muller decoder, P _MaxBe P _iMaximum, the R that is measured is that table is R=P _Max/ (∑ P _i-P _Max).

Steady judgement route variable by the CQI symbol that relatively should decipher, a simple decision mechanism based on threshold value can be used in this base station, might there be mistake (step 114 so that determine the CQI symbol of this acceptance whether might have maybe, 214), for instance, if this difference between this maximum and second largest route variable is less than 1 decibel, very high probability is just arranged (typically, greater than 95%) wrong and this CQI of this CQI should be abandoned, other difference value also can be used, but the relative vicious probability of this CQI will lower, a preferable disparity range is between the 0-2 decibel, and is enough high so that this CQI is in the probability of error condition.

With TDD is example, and the result of the embodiment of this CQI reliability detection method aspect the ability of detecting CQI mistake is shown in Fig. 4 and Fig. 5.The icon of Fig. 4 and Fig. 5 is included in BER, ACK-＞NACK BER, NACK-＞ACK BER, the CQIs that abandons after the MUD, correct but the CQIs and the CQIs wrong but that do not abandon that are abandoned, this icon also comprises RMF BER, it is first of 10 bit length CQI characters, and indicates this suggestion modulation format (not being that QPSK is exactly QAM).This icon display goes out the BER of this single position, this RTBS comprises other nine information bits at this CQI character, and it represents this suggestion transport block setting, it is the quantity of information bit in this HS-DSCH transport block, it is this WTRU suggestion that be sent, this icon display goes out this character error rate (WER) of these nine positions, and it points out the probability of nine only rare mistakes in RTBS position.

Following speech can be learnt by Fig. 4 and Fig. 5: 1) the steady decision gate limit value of this ACK/NACK is to be the 0.1* signal amplitude; 2) abandon the standard of a CQI, be included on the amplitude the high relevance crest of this highest/second less than 1 decibel; 3) CQIs of mistake can be detected immediately; And 4) " correct CQIs is abandoned mistakenly " can be weighed to reach the target improper value easily with the ratio of " CQIs of mistake is not abandoned ".

Therefore, the CQI scope coding of a progress can be reached by the present invention, according to preceding method, when HS-SICH carries ACK/NACK and this CQI has been received, device can not understand whether the HS-SICH scope (not being that this ACK/NACK is exactly this CQI) of whether this reception is to receive in error condition, because it does not have CRC, if this ACK/NACK is received in error condition, and this Node B is not understood this point, for instance, this Node B may resend a grouping, it is successfully to receive or abandon (not sending) grouping in this WTRU, it is be sent out, and this WTRU waits a time expand, and this grouping will arrive never and this internal memory will postpone.CQI reliability detection according to the present invention allows this Node B to indicate the HS-SICHs of which reception can continue suitably action reliably, similarly be to resend, similarly, for reasonably guarantee constantly (when reception＜this example 1%) this HS-SICH is for reliably, this HS-SICH need be received under a high SNR value, this represents that this WTRU must send in a high power, because this WTRU does not have so much power and allow coverage area reach maximum possibly, this WTRU transmitted power must be enough to meet average 0.1 HS-SICH BER, and the CQI reliability detection method that is proposed offers this Node B via this CQI of report, follow the trail of the device that this current transmit is set in the device of this WTRU and adjusts this power setting.

In addition, the reliability detection method also can be in order to provide indicating device to the HSDPA base station, the RNC and the CQI report that reach in the HS-SICH/HS-DPCCH performance, to warn this CQI value of this HSDPA base station may be wrong, may the inappropriate possibility that also becomes to warn this to be delivered to SIR through the information that reaches RNC from this HSDPA base station via this Iub/Iur network interface.Simple statistics is to be provided, for example there is the reception HS-SICHs that how much is received from a specific WTRU to be based on CQI route variable and by being declared it is wrong, there are how many total HS-SICHs in same period, to be received, and there are how many HI-SICHs to be declared not need to be sent, these functions are provided by a CRC usually, and now because become possibility based on this CQI reliability testing of steady judgement route meter.

The one specific purpose according to the present invention, fresh information is to be added to this Iub/Iur network interface to define a transmission underproof quantity to take place, and the quantity that no sign receives takes place, that is report a specific WTRU to send the continuous UL HS-SICH information of X and do not have mistake to be reported.

Reception according to defective indicating device one predetermined number of the CQI of relevant one specific WTRU or HS-SICH channel, not that this HSDPA base station is exactly that this RNC can take adequate measures, for example change this power contorl parameters of this WTRU or this HS-SICH channel, or abandon CQIs, and the CQI report of using aforementioned DL HSDPA to send.(be shown in Fig. 1) in one embodiment of this invention, counting is to carry out in 200 milliseconds of time slots, in each frame (it is 10 milliseconds long), only having a HS-SICH at the most is received from a WTRU, therefore have only 20HS-SICHs at the most in 200 milliseconds, all counters are to be defined by 0...20 (always receiving HS-SICHs, mistake HS-SICHs and leakage HS-SICHs).

Even if above-mentioned example is at HSDPA TDD, the present invention is similarly also applicable to HSDPA FDD and other transmission form, in order to CQI reliability detection and the control of enhancement outer loop power of being improved, although specific embodiment of the present invention discloses and describes, have the knack of this skill person and still can do many modifications and variations under not departing from the scope of the present invention, foregoing description only is not to be to limit the present invention by any way in order to explanation.

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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