CN101001166A - Frequency domain differential CQI report method and equipment of dynamic configuring maximum differential valve - Google Patents
Frequency domain differential CQI report method and equipment of dynamic configuring maximum differential valve Download PDFInfo
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Abstract
This invention relates to a method for a frequency domain difference reporting CQI dynamically configuring differ3ence values including the following steps: a network end transmits the initial configuration information of frequency domain maximum difference CQI value to a user device to configure the maximum difference CQI value of the initial frequency domain of the user device, the user measures relatively to send the CQI report of frequency domain difference to the base station, the network end sends the re-configuration information of the domain maximum difference CQI value to re-configue the maximum difference value, which avoids reporting the absolute CQI value of all reporting bands by reporting the difference value of the CQI value of other reporting bands and the optimum sub-band and realizes the dynamic control of the difference bit number expressing difference value to further optimize the CQI report signaling.
Description
Technical field
The present invention relates to wireless communication system, particularly relate to the method for reporting of the channel quality indication that is used for frequency domain dispatching in the wireless communication system.
Background technology
Now, third generation partner plan (being called for short 3GPP) standardization body has set about beginning its existing system standard is carried out long-term evolution (LTE).In the middle of numerous physical layer transmission technology, OFDM (OFDM) technology is with its higher availability of frequency spectrum, and lower processing complexity becomes in all descending schemes more promising a kind of.
Be a kind of multi-carrier modulation communication technology on the OFDM technological essence, its basic principle is the data flow of a two-forty to be decomposed into several rate data streams transmit simultaneously on one group of mutually orthogonal subcarrier.The OFDM technology is because its multicarrier character has performance advantage aspect a lot.(1) significant advantage of OFDM technology is because data parallel transmission on a plurality of subcarriers respectively, and the length of the symbol on each subcarrier increases accordingly, and is insensitive to channel delay; Add protection on each symbol at interval by further giving, promptly introduce Cyclic Prefix (CP, Cyclic Prefix), under the situation of channel delay, can eliminate intersymbol interference (ISI) fully less than circulating prefix-length.Like this, each subcarrier has all experienced flat fading channel.(2) availability of frequency spectrum height of OFDM technology, ofdm signal are actual on frequency domain an overlapping, and this overlapping on improved the availability of frequency spectrum to a great extent.(3) ability of the anti-narrow band interference of OFDM technology and frequency selective fading is stronger.Can make OFDM have frequency diversity and time diversity effect by chnnel coding with interweaving, thereby resist narrow band interference and frequency selective fading effectively.(4) modulation of OFDM technology can realize by baseband I FFT conversion, and IFFT/FFT has ripe quick calculation method, can realize in dsp chip and hardware configuration easily.
In the OFDM wireless transmitting system,, frequency scheduling can be applied in the transfer of data in order to obtain bigger transfer of data throughput.Because the transmission channel each user often has different frequency domain declines on different frequency ranges, like this on each frequency range, each user has different channel qualities, therefore utilize frequency domain dispatching, just each frequency range can be dispatched to channel condition subscriber equipment preferably, to realize the maximization of transfer of data throughput.
In order to realize frequency scheduling, the base station need be known on each scheduling frequency range, the channel quality of each subscriber equipment, and this just needs each subscriber equipment to give the base station with the reporting channel quality indication on each scheduling frequency range.Because the required information bit of unique user reporting channel qualities indication equals the sum total that all report corresponding reporting channel quality indication information bit on the frequency range.Therefore, for each subscriber equipment, the scheduling frequency range of its report is many more, and so corresponding required up signaling burden is heavy more.
Concerning frequency scheduling, the channel quality information of each subscriber equipment that the base station obtained is many more, detailed more, the scheduling gain that obtains of the dispatching office that carries out according to these information is also big more so, yet the information of reporting is many more, so corresponding required up signaling burden is also big more, and is also big more to up transfer of data influence.Therefore need some good methods, guaranteeing under certain scheduling gain prerequisite, reduce CQI as far as possible and report required up signaling burden.
Have a lot of methods to reduce channel quality indication (CQI) at present and report corresponding signaling burden, the difference that wherein a kind of method commonly used is exactly a time domain is reported.Provided the difference method for reporting of time domain among the IEEE802.16E among Fig. 1.Subscriber equipment is when reporting CQI, at first report the absolute CQI value that has 5 frequency sub-band of best channel qualities in all 12 frequency sub-band, which 5 frequency range what its method indicated report for first bit with 12 bits shines upon is, reports the absolute CQI value on these 5 frequency ranges afterwards again.Report the difference value of selected frequency sub-band current C QI value and former frame CQI value at each follow-up frame with differential bit then, until the report that new absolute CQI value is arranged.The difference of so-called time domain is reported and is meant subscriber equipment after having reported 5 sub-band CQI values, just begin to report these 5 sub-bands in each sub-band on the CQI value of present frame with respect to the difference of the CQI value of former frame.
From top description, as can be seen,, in existing IEEE802.16E Radio Transmission Technology, adopted the difference of time domain to report for fear of the report that all sends absolute CQI value at each frame to the base station.
Yet scheduling for base stations control, usually the frequency sub-band that has only the user to have better channel quality just can be scheduled to this user, therefore the user often only understands the channel quality of the best several frequency sub-band of reporting channel qualities, therefore the CQI difference between these several frequency sub-band is often also little, therefore, so can adopt the difference of frequency domain to report it and further optimize if the CQI that reports these several frequency ranges with absolute CQI value also has bigger redundancy.Here so-called frequency domain differential demodulation is reported and is meant that it is that the difference of CQI between frequency sub-band is reported that said difference is reported, and does not resemble the difference report of frame and interframe CQI among the IEEE802.16E.
Summary of the invention
The objective of the invention is to propose the method and apparatus that a kind of new CQI reports,, reduce the signaling burden that up CQI reports as far as possible to be implemented under the prerequisite of obtaining bigger frequency scheduling gain.
For achieving the above object, but a kind of frequency domain differential demodulation of dynamic-configuration difference value is reported the method for CQI, comprises the steps:
A) network terminal sends the maximum differential CQI value of frequency domain initial configuration message, the maximum differential CQI value of the initial frequency domain of configure user equipment to subscriber equipment;
B) user carries out corresponding measurement, and the CQI that sends frequency domain differential demodulation to the base station reports;
C) network terminal sends the maximum differential CQI value of frequency domain reconfiguration message according to system situation to subscriber equipment, and the maximum difference value of the frequency domain of subscriber equipment is reshuffled.
But the present invention proposes method and device that a kind of frequency domain differential demodulation of dynamic-configuration difference value is reported CQI, reports the absolute CQI value that frequency ranges and the method for the difference value of the CQI values of the optimum frequency sub-band of channel have avoided reporting all report frequency ranges by reporting other.In addition by the dynamic-configuration of network terminal, thereby can realize the dynamic control of the differential bit number of his-and-hers watches differential score value, thereby further optimize the signaling that CQI reports maximum difference value.
Description of drawings
Fig. 1 is the time-domain difference CQI method for reporting among the IEEE802.16E;
Fig. 2 is the signaling process figure that frequency domain differential demodulation CQI reports process;
Fig. 3 is that subscriber equipment frequency domain differential demodulation CQI reports operating process;
Fig. 4 is that the signaling that frequency domain differential demodulation CQI reports is formed;
Fig. 5 is that subscriber equipment is realized the equipment drawing that frequency domain differential demodulation CQI reports;
Fig. 6 is the operational flowchart in the entity that stops of network terminal RRC agreement;
Fig. 7 is that the base station receives the operating process that frequency domain differential demodulation CQI reports;
Fig. 8 is the CQI value distribution schematic diagram on each frequency sub-band among the embodiment;
Fig. 9 is that the hardware that subscriber equipment frequency domain differential demodulation CQI reports is realized block diagram;
Figure 10 is that the base station sends maximum frequency domain differential demodulation CQI initial configuration and reconfiguration message and receives the hardware realization block diagram that frequency domain differential demodulation CQI reports.
Embodiment
The present invention proposes the method for reporting and the equipment of a kind of channel quality indication (CQI), under the prerequisite that is implemented in the bigger frequency scheduling gain of acquisition, minimizes CQI and reports required signaling burden.
Among the present invention, frequency domain differential demodulation CQI reports the signaling process figure of process, as shown in Figure 2.Its process will comprise following steps:
Network terminal gives the initial frequency domain of the initial user device configuration that inserts maximum differential CQI value by high-level signaling, and this configuration information can be included in network terminal and issue in the maximum differential CQI value of the frequency domain initial configuration message of subscriber equipment 201.The entity that sends this message to subscriber equipment is the entity that network terminal RRC agreement stops, and this entity can be that the base station also can be other nodes of network terminal.Received the maximum differential CQI value of frequency domain of this initial configuration when subscriber equipment after, subscriber equipment just can be determined needed differential bit according to the maximum differential CQI value of this configuration, thereby just can be according to the CQI value on each frequency range on the measured down channel, the definite frequency sub-band that will report, determine the wherein frequency sub-band of channel quality optimum, just can determine to indicate other to report the differential bit of the CQI value of frequency range, just can send the CQI report 202 of frequency domain differential demodulation afterwards to the base station corresponding to the difference value of maximum CQI value.In data transmission procedure, if the loading condition of network based system, judge when being necessary to reconfigure certain user's frequency domain maximum differential CQI value, reconfigure the maximum differential CQI value of frequency domain can for these subscriber equipmenies, and the transformat of the channel of change transmission CQI, send frequency domain differential demodulation CQI to the base station and report with new transformat.This reconfiguration information can be included in the maximum differential CQI value of the frequency domain reconfiguration message that network terminal sends to subscriber equipment in 203.The entity that sends this message to subscriber equipment is similarly the entity that network terminal RRC agreement stops, and this entity can be that the base station that reception frequency domain differential demodulation CQI reports also can be other nodes of network terminal.
In said process, 201 and 203 are the signaling of Radio Resource control, and the report of the frequency domain differential demodulation CQI in 202 is the signaling of physical layer.Wherein, the radio bearer that the maximum differential CQI value of 201 frequency domains initial configuration classes of messages is similar among the existing 3GPP is set up (Radio Bearer Setup) message, and the maximum differential CQI value of 203 frequency domains reconfiguration message is similar among the existing 3GPP radio bearer and reshuffles (Radio Bearer Reconfiguration) message.
In order to realize that above-mentioned frequency domain differential demodulation CQI reports process, the operating process flow chart in the subscriber equipment comprises following steps as shown in Figure 3:
Subscriber equipment receives the maximum differential CQI value of the frequency domain initial configuration message 302 from network terminal, and is identified for reporting the bit number of the differential CQI value of each frequency sub-band according to the maximum differential CQI value of the frequency domain of network terminal configuration.
The realization of the maximum differential CQI value of network terminal configuration frequency domain has dual mode: a kind of is the differential CQI value that directly disposes the frequency domain maximum, and directly indicating the maximum differential CQI value of frequency domain as network terminal is 7; Another kind is the required bit number of frequency domain differential demodulation CQI value that each sub-band is reported in indication, and indicating the bit number of the differential CQI value of reporting each frequency sub-band as network terminal is 3, can know that corresponding maximum frequency domain differential demodulation CQI value is 7 (binary number is 111).
Like this, for first method, the method that subscriber equipment determine to be reported the required bit number of the differential CQI value of each frequency sub-band can be maximum differential CQI to be worth pairing decimal number be converted to binary number, and the required bit number of differential CQI value that then is used to report each frequency sub-band promptly equals the number of bits of this binary number.For example the maximum differential CQI value that sends of network terminal is 7, and so corresponding binary number is " 111 ", and the required bit number of differential CQI value that is used to report each frequency range so is 3.And for second method, subscriber equipment can directly be known the required bit number of differential CQI value of reporting each frequency sub-band
Afterwards, subscriber equipment will carry out 303, measure the quality of down channel, determine that each CQI reports the channel quality of frequency range.
Then, subscriber equipment carries out 304, determine the frequency range that to report, and the wherein frequency range and the CQI value thereof of channel quality optimum, will determine to report the differential bit of other frequency range differential CQI values according to the top resulting required bit number of differential CQI value that is used to report each frequency range then.
After the differential CQI value of having determined other frequency ranges the optimum frequency range except that channel quality, subscriber equipment just can send frequency domain differential demodulation CQI to the base station and report 305.
Subscriber equipment also will detect the maximum differential CQI value of the frequency domain reconfiguration message 306 that whether has from network terminal in the report process.If have, then subscriber equipment need upgrade the maximum frequency domain differential demodulation CQI value that allows and upgrade the transformat 307 that frequency domain differential demodulation CQI reports.
In the report process, subscriber equipment will judge whether the professional end of transmission 308, if do not finish then proceed the report process.
Send in the step 305 of frequency domain differential demodulation CQI report at above-mentioned subscriber equipment, subscriber equipment sends frequency domain differential demodulation CQI signaling to the base station to be formed as shown in Figure 4, and the frequency sub-band number that the supposition subscriber equipment is reported among the figure is that N is individual.Subscriber equipment is reported main 4 parts to the frequency domain differential demodulation CQI that the base station sends, and is respectively:
401, the sequence number of reporting frequency sub-band is used to indicate the sequence number of N frequency sub-band of report.A kind of feasible mode is, supposes that the total frequency sub-band number of system is M, so can with long N position, a M position be 1 other be that 0 bit sequence of mapping is represented.
402, the sequence number of maximum CQI frequency sub-band is used for indicating the frequency range of channel quality optimum in the sequence number of reporting frequency sub-band.A kind of feasible mode is for pointing out the sequence number in reporting frequency sub-band with a binary bit sequence.
403, the absolute value of maximum CQI is used to point out the absolute value of the CQI of the optimum frequency sub-band of channel quality.
404, N-1 differential CQI value is used to point out the difference value of other report frequency sub-band CQI value with respect to maximum CQI value.Be worth determined differential bit number according to maximum differential CQI, determine the differential bit of the CQI value of N-1 frequency sub-band.It should be noted that the CQI value of certain frequency range deducts maximum differential CQI value less than maximum CQI value if in this N-1 frequency range, when reporting the CQI of this frequency range so, will report maximum CQI value and deduct the CQI value that maximum differential CQI value obtains.For example, if maximum CQI value is 30, maximum differential CQI value is 3, and certain CQI value of reporting frequency sub-band is 25, will report 27 so when reporting the CQI of this frequency range, just reports maximum differential CQI value 3.As can be seen, this method can be brought certain error, but since system when doing frequency domain dispatching, the relatively poor frequency range of channel quality will can not be dispatched to this user, therefore to a certain extent, this error can allow.
Subscriber equipment is realized the equipment drawing that CQI reports, as shown in Figure 5.
Among the figure, the function that subscriber equipment is realized in controlled processing unit 502 is embodiment of the present invention.Subscriber equipment at first receives by 501 and the channel quality measurement device receives the maximum differential CQI value of the frequency domain initial configuration message that network terminal sends, and it is sent into 502 controlled processing units.Subscriber equipment will be measured the signal to noise ratio on each sub-band by 501 receptions and channel quality measurement device afterwards, and give 502 controlled processing units with measurement result.Controlled processing unit will be according to the signal to noise ratio on each frequency sub-band that measures, determine corresponding C QI value, the definite sequence number that will report frequency sub-band, determine the sequence number of maximum CQI frequency sub-band, determine the absolute value of maximum CQI, and determine N-1 differential CQI value of reporting frequency sub-band according to the maximum differential CQI value of network terminal configuration.After having determined that frequency domain differential demodulation CQI reports, just can pass through 503 dispensing devices, the CQI that generates is reported send to the base station.In the report process, when if the maximum differential CQI value of the frequency domain reconfiguration message that comes from network terminal is arranged, to still receive and the reception of channel quality measurement device by 501, and pass to 502 controlled processing units, controlled processing unit will upgrade and upgrade the transformat that frequency domain differential demodulation CQI reports to the maximum differential CQI value of frequency domain.
Provide the operating procedure in the entity that network terminal RRC agreement involved in the present invention stops below.Its flow chart as shown in Figure 6, the step that comprises is as follows:
The entity that network terminal RRC agreement stops at first sends the maximum differential CQI initial configuration of frequency domain message 602 to the user of initial access.To monitor some system informations 603 of being known in this system afterwards, this information can comprise the loading condition of system, the channel quality condition that the user reported, user business type information etc., and judge whether that according to these information needs upgrade this user's the maximum differential CQI value 604 of frequency domain.For example when number of users in the system is big, CQI on the frequency sub-band that the certain user reported with poor channel quality, for the base station will be some garbages, because the user is many, this frequency resource allocation only can be given channel quality user preferably in the base station, the entity that network segment RRC agreement stops will reduce maximum frequency domain differential demodulation CQI value, reports required information bit to reduce corresponding frequency domain differential CQI.If therefore this entity is judged and need be upgraded the maximum difference value of frequency domain, will send the maximum differential CQI reconfiguration message 605 of frequency domain to this user.If the transmission of this user's business does not finish 606, this entity will continue monitoring system information, and judge whether to need to upgrade this user's the maximum differential CQI value of frequency domain.
In the present invention, the base station will receive the frequency domain differential demodulation CQI that subscriber equipment sends and report, and discerns the CQI value of its report, the flow chart of its operating procedure as shown in Figure 7, the step that comprises is as follows:
At first the base station will be known the maximum differential CQI value of the corresponding frequency domain of subscriber equipment and determine the transformat 702 that corresponding frequency domain differential demodulation CQI reports, if receiving the base station of frequency domain differential demodulation CQI report and the entity of network terminal RRC agreement termination is same entity, the base station just can directly be known so, if and be different entities, need this information of signaling base station of the entity that stops from network terminal RRC agreement so.After having known the transformat that maximum differential CQI value of the corresponding frequency domain of subscriber equipment and corresponding frequency domain differential demodulation CQI report, the base station just can receive the frequency domain differential demodulation CQI report 703 that subscriber equipment is reported.Report according to frequency domain differential demodulation CQI the base station just can identify corresponding C QI value 704 on each report frequency range.The method of identification is, what can know that subscriber equipment reports according to the sequence number of reporting frequency sub-band is those frequency ranges, just can know that according to the sequence number of maximum CQI frequency sub-band and the absolute value of maximum CQI how many optimum its maximum CQI values of channel quality of which frequency sub-band is, just can calculate other N-1 according to N-1 differential CQI value then and report how many corresponding C QI values is on the frequency sub-band.In the process of reporting, before the professional end of transmission of this subscriber equipment, the renewal 705 of the maximum differential CQI value of frequency domain whether this user is arranged also will be monitored in the base station, if have, then to upgrade the maximum differential CQI value of the corresponding frequency domain of subscriber equipment and determine the transformat 706 that corresponding frequency domain differential demodulation CQI reports.
Embodiment
For the inventive method is described, provide the embodiment of the inventive method below.In the present embodiment, the total frequency sub-band of system has M=8, and the CQI frequency sub-band fixed number that each subscriber equipment will be reported in the system is N=4.Suppose the channel quality of certain subscriber equipment on 8 sub-bands as shown in Figure 8.It is 7 (binary value is 111) that the entity that network terminal RRC agreement stops is initially given this user configured maximum frequency domain differential demodulation CQI value.
The entity that network terminal RRC agreement stops can have two kinds of methods initially for the realization of this user configured maximum frequency domain differential demodulation CQI value: a kind of is that directly the maximum frequency domain differential demodulation CQI value of indication is 7 (binary value is 111), and another kind of for the required information bit of indication subscriber equipment report frequency domain differential demodulation CQI value is 3, the maximum differential CQI value of promptly corresponding frequency domain is 7 (binary value is 111).
Subscriber equipment can know that by two kinds of top methods it is 3 that corresponding report frequency domain differential demodulation CQI value difference divides bit number, then will report as follows to the frequency domain differential demodulation CQI that the base station sends:
Report the sequence number of frequency sub-band: 00110011, on bit mapping indication current user equipment down channel, sub-band SB3, SB4, the channel quality of SB7 and SB8 is optimum, reports frequency sub-band as selected 4;
The sequence number of maximum CQI frequency sub-band: 00, indicate the CQI that first frequency sub-band has maximum in these 4 frequency sub-band;
The absolute value of maximum CQI: 11110, indicating maximum CQI value is 30 (binary value is 11110);
Other 3 differential CQI values: 010 110 101, indication SB4, the difference of the CQI of SB7 and SB8 and maximum CQI value is 2,6 and 5, promptly corresponding C QI value is 28,24 and 25.
As can be seen from the above, the information bit of the corresponding frequency domain differential demodulation CQI report of user device transmissions this moment needs is 24.Subscriber equipment will send frequency domain differential demodulation CQI to the base station with the transformat that can send 24 information bit CQI reports and report.
And corresponding transformat also will be determined according to the maximum frequency domain differential demodulation CQI value of being known in the base station, solves the frequency domain differential demodulation CQI report that subscriber equipment sends, and determines the CQI value on the corresponding report frequency sub-band.
In the present embodiment, network terminal is according to the loading condition of current system, judge and have only the CQI value just to understand by base station scheduling greater than 27 CQI value, the entity that this moment, network terminal RRC agreement stopped will send the maximum differential CQI reconfiguration message of frequency domain to subscriber equipment, maximum frequency domain differential demodulation CQI value is updated to 3 from 7, and the differential bit number that so corresponding frequency domain differential demodulation CQI reports is 2.Suppose on 8 current sub-bands of subscriber equipment channel quality still as shown in Figure 8, then subscriber equipment will send frequency domain differential demodulation CQI to the base station and reports as follows after having received the maximum differential CQI reconfiguration message of frequency domain:
Report the sequence number of frequency sub-band: 00110011, on bit mapping indication current user equipment down channel, sub-band SB3, SB4, the channel quality of SB7 and SB8 is optimum, reports frequency sub-band as selected 4;
The sequence number of maximum CQI frequency sub-band: 00, indicate the CQI that first frequency sub-band has maximum in these 4 frequency sub-band;
The absolute value of maximum CQI: 11110, indicating maximum CQI value is 30 (binary value positions 11110);
Other 3 differential CQI values: 101111, indication SB4, the difference of the CQI of SB7 and SB8 and maximum CQI value is 2,3 and 3, promptly corresponding C QI value is 28,27 and 27.
Frequency sub-band SB7 that is reported as can be seen from the above and the CQI value on the SB8 have error, but owing to have only the CQI value just can be by base station scheduling greater than 27 frequency sub-band, this error for scheduling result less than the influence, can't have influence on the frequency scheduling gain of system, so this error allows.Yet this moment as can be seen the corresponding frequency domain differential demodulation CQI of user device transmissions to report the information bit that needs be 21, corresponding signaling burden has obtained minimizing.Subscriber equipment can be determined the transformat that can send 21 information bit CQI reports according to the maximum frequency domain differential demodulation CQI value that is disposed and send frequency domain differential demodulation CQI report to the base station.
Provided among Fig. 9 and utilized the inventive method subscriber equipment to realize that frequency domain differential demodulation CQI reports an example of hardware block diagram.
Subscriber equipment receives by 901 antennas; 902 radio-frequency transmitters are handled; 903 moulds/number conversion; 904 remove protection at interval; 905OFDM demodulation (DFT conversion), 906 demodulation, 907 decoded/deinterleaved just can receive maximum differential CQI value initial configuration message of frequency domain and the maximum differential CQI value of the frequency domain reconfiguration message that network terminal sends; and it is sent in 909 controlled processing units, controlled processing unit just can be determined the maximum differential CQI value of corresponding frequency domain.
Subscriber equipment receives by 901 antennas; 902 radio-frequency transmitters are handled; 903 moulds/number conversion; 904 remove protection at interval; 905OFDM demodulation (DFT conversion); just can in 908 modules, measure, and this measurement result is sent in 909 controlled processing units the signal to noise ratio of the pilot signal on each frequency sub-band.
Controlled processing unit can be according to maximum differential CQI value initial configuration message of received frequency domain or the determined maximum differential CQI value of the maximum differential CQI value reconfiguration message of frequency domain, according to method described above, form the signaling that frequency domain differential demodulation CQI reports then.Afterwards just can be by 910 chnnel codings/interweave, 911 modulation, the modulation of 912 Single Carrier Frequency Division Multiple Access, 913 add protection at interval, 914 D/A switch, 915 radio frequency sending sets at last through 901 antennas, are reported determined frequency domain differential demodulation CQI and are sent to the base station.
Provide the hardware that utilizes the inventive method base station to send the maximum differential CQI value initial configuration message of frequency domain and maximum differential CQI value reconfiguration message of frequency domain and reception frequency domain differential demodulation CQI report among Figure 10 and realized an example of block diagram.
The base station receives by 1001 antennas; 1002 radio-frequency transmitters are handled; 1003 moulds/number conversion; 1004 remove protection at interval; 1005 Single Carrier Frequency Division Multiple Access demodulation; 1006 demodulation; 1007 decoded/deinterleaved finally can obtain the frequency domain differential demodulation CQI report information bit that subscriber equipment is reported; these information bits will import 1208 controlled processing units into, and which frequency sub-band what identify that subscriber equipment reports according to previously described method through controlled processing unit be, wherein the CQI maximum of which frequency sub-band; how many maximums is; other are reported the peaked therewith difference of frequency range what are, thereby finally know the CQI value of all report frequency sub-band, finish the detection that CQI reports.
When network terminal when subscriber equipment sends maximum differential CQI value initial configuration message of frequency domain or the maximum differential CQI value of frequency domain reconfiguration message; the base station will be by 1009 chnnel codings/interweave; 1010 modulation; the 1011OFDM modulation; 1012 add protection at interval, 1013 D/A switch, 1014 radio frequency sending sets; through 1001 antennas, corresponding configuration messages is sent to subscriber equipment at last.
Claims (14)
1. but the frequency domain differential demodulation of a dynamic-configuration difference value is reported the method for CQI, comprises the steps:
A) network terminal sends the maximum differential CQI value of frequency domain initial configuration message, the maximum differential CQI value of the initial frequency domain of configure user equipment to subscriber equipment;
B) user carries out corresponding measurement, and the CQI that sends frequency domain differential demodulation to the base station reports;
C) network terminal sends the maximum differential CQI value of frequency domain reconfiguration message according to system situation to subscriber equipment, and the maximum difference value of the frequency domain of subscriber equipment is reshuffled.
2. method according to claim 1 is characterized in that described network terminal sends the entity that the entity of the initial configuration message of the maximum differential CQI value of frequency domain and reconfiguration message stops for the network terminal radio resource control to subscriber equipment.
3. method according to claim 1 is characterized in that described network terminal is a radio resource control signaling to initial configuration message and the reconfiguration message that subscriber equipment sends the maximum differential CQI value of frequency domain.
4. method according to claim 1 is characterized in that described network terminal is directly to indicate the maximum differential CQI value of frequency domain in corresponding message to initial configuration message and the maximum differential CQI value of reconfiguration message configuration frequency domain that subscriber equipment sends frequency domain maximum differential CQI value.
5. method according to claim 1 is characterized in that described network terminal is the required bit number of frequency domain differential demodulation CQI value that each sub-band is reported in indication in corresponding message to initial configuration message and the maximum differential CQI value of reconfiguration message configuration frequency domain that subscriber equipment sends the maximum differential CQI value of frequency domain.
6. method according to claim 1 is characterized in that in step b, corresponding measurement comprises step:
Determine the differential bit of needs according to the maximum differential CQI value of configuration;
According to the definite frequency sub-band that will report of the CQI value on each frequency range on the measured down channel;
By determining the wherein frequency sub-band of channel optimum, other reports the differential bit of the CQI value of frequency range corresponding to the difference value of maximum CQI value to determine indication.
7. method according to claim 1 is characterized in that in step b), and the frequency domain differential demodulation CQI that described subscriber equipment sends to the base station reports and is physical layer signaling.
8. method according to claim 1, it is characterized in that in step b), report the several maximum frequency domain differential demodulation CQI values of differential bit of the frequency domain differential demodulation CQI value of frequency sub-band during the frequency domain differential demodulation CQI that described subscriber equipment sends to the base station reports and determine according to the network terminal configuration.
9. method according to claim 1, it is characterized in that in step b) the differential bit number of reporting the frequency domain differential demodulation CQI value of frequency sub-band during the frequency domain differential demodulation CQI that described subscriber equipment sends to the base station reports equals the number of bits of the corresponding binary number of maximum frequency domain differential demodulation CQI value of network terminal configuration.
10. method according to claim 1 is characterized in that in step b), and the transformat that the frequency domain differential demodulation CQI that described subscriber equipment sends to the base station reports is determined according to the maximum differential CQI value of the frequency domain of network terminal configuration.
11. method according to claim 2 is characterized in that the entity that described network terminal radio resource control stops is the base station.
12. method according to claim 2 is characterized in that the entity that described network terminal radio resource control stops is network terminal other nodes except that the base station.
13. method according to claim 12, it is characterized in that described node when initial configuration message that sends the maximum differential CQI value of frequency domain to subscriber equipment and reconfiguration message, also the maximum differential CQI value notice of the frequency domain of corresponding configuration will be received the base station that frequency domain differential demodulation CQI reports.
14. a subscriber equipment is reported the equipment of frequency domain differential demodulation channel quality indication, comprising:
A) reception and channel quality measurement device are used to receive maximum differential CQI value initial configuration message of frequency domain and the reconfiguration message that network terminal sends, and measure the channel quality on all frequency sub-band;
B) subscriber equipment controlled processing unit, maximum differential CQI value initial configuration message of frequency domain or reconfiguration message that one side is sent according to network terminal, determine or the maximum differential CQI value of renewal frequency domain, the maximum differential CQI value of channel quality on all frequency sub-band that measure according to measurement mechanism and frequency domain on the other hand, the definite frequency sub-band that will report, determine to have the frequency sub-band and the CQI value thereof of maximum CQI value, determine the CQI value of other report frequency sub-band and the difference of maximum CQI value, generate frequency domain differential demodulation CQI and report signaling;
C) dispensing device, the signaling that the frequency domain differential demodulation CQI that is used for being generated reports sends to the base station.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100008189A CN101001166A (en) | 2006-01-11 | 2006-01-11 | Frequency domain differential CQI report method and equipment of dynamic configuring maximum differential valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100008189A CN101001166A (en) | 2006-01-11 | 2006-01-11 | Frequency domain differential CQI report method and equipment of dynamic configuring maximum differential valve |
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| CN101001166A true CN101001166A (en) | 2007-07-18 |
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| CNA2006100008189A Pending CN101001166A (en) | 2006-01-11 | 2006-01-11 | Frequency domain differential CQI report method and equipment of dynamic configuring maximum differential valve |
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