CN101630991A - Time division synchronous code division multiple access terminal and method for determining channel quality instruction - Google Patents
Time division synchronous code division multiple access terminal and method for determining channel quality instruction Download PDFInfo
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Abstract
The invention provides a time division synchronous code division multiple access terminal and a method for determining a channel quality instruction. The method comprises the following steps: setting a first corresponding relation which is a pre-selected corresponding relation between the equivalent coding rate and signal-to-interference ratio under the fixed time slot number and code track number; after measuring the current signal-to-interference rate of a high-speed physical downlink shared channel, determining the equivalent coding rate corresponding to the current signal-to-interference rate through the first corresponding relation; determining a currently-recommended modulation mode corresponding to the current signal-to-interference rate according to a preset second corresponding relation which is a corresponding relation between the signal-to-interference rate and the recommended modulation mode; and determining the size of a currently-recommended transmission block according to the time slot number and the code track number currently allocated to the high-speed physical downlink shared channel and the determined equivalent coding rate. The technical scheme is utilized and can save mass storage space only needing to store the equivalent coding rate and a corresponding table of SIR under the condition of allocation for one physical resource.
Description
Technical field
The present invention relates to TD SDMA and insert (TD-SCDMA) technology, definite method of particularly a kind of TD-SCDMA terminal and channel quality indication (CQI, Channel Quality Indicator) thereof.
Background technology
It is a kind of high speed data transfer technology of introducing in order to satisfy the growing data service of mobile subscriber that high speed downlink packet inserts (HSDPA, High Speed Downlink Packet Access) technology.In the TD-SCDMA system, by introducing high-speed physical downlink shared channel (HS-PDSCH) (HS-PDSCH, High SpeedPhysical Downlink Shared Channel) strengthens air interface, and with High-Speed Shared Control Channel (HS-SCCH, High Speed Shared Control Channel) and high-speed shared information channel (HS-SICH, High Speed-Downlink Shared Channel) finishes relevant controlling mechanism, adopt Adaptive Modulation and Coding (AMC, Adapt Modulation Coding) technology, mix automatic repeat requests (HARQ, Hybrid Automatic Repeat Request) technology etc. has increased data throughput capabilities.Fig. 1 shows the HS-PDSCH of prior art and the timing diagram of HS-SICH.Fig. 2 shows the HS-PDSCH of prior art and the timing diagram of HS-SCCH.
AMC is the core technology of HSDPA.Usually, people utilize the adjustment channel transmitting power, improve channel transmission quality, if the signal interference ratio (SIR of channel, signal to interference ratio) lower, then increase transmitting power, otherwise, then reduce transmitting power, in this process, chnnel coding is changeless, and the AMC technology then can be along with the change of SIR, select suitable modulation coding mode, when SIR is low, adopt Quadrature Phase Shift Keying (QPSK) modulation, when SIR is higher, adopt 16 ary quadrature amplitude (16QAM), with the data throughput capabilities that increases.
To portable terminal is subscriber equipment (UE, User Equipment), needs to measure the SIR of descending HS-PDSCH, and according to SIR, the modulation system from HS-PDSCH to the base station and the code rate that propose are advised, utilize CQI, by the HS-SICH channel, send to the base station.
CQI includes two kinds of information: the modulation system (RMF of recommendation, Recommended ModulationFormat), transmission block size (the RTBS that recommends, Recommended Transport Block Size), common way is, pre-determined the mapping table of SIR and CQI in advance by system emulation, this SIR of prior art and the mapping table of CQI are the mapping table between SIR and RMF and the RTBS, after finishing sir measurement, directly by with SIR being this table of index search, can determine RMF and RTBS, but because in the HSDPA of TD-SCDMA system, the distribution of physical resource relates to 5 time slots, 16 code channels of each time slot, with whole combinations of the distribution condition of various physical resources totally 5 * 16=80 kind situation all make table, enormous amount, for bottom layer realization, occupation space is too big, and, mapping table can't be adjusted after solidifying.
Summary of the invention
The definite method that the purpose of this invention is to provide the indication of a kind of TD-SCDMA terminal and channel quality thereof is to solve the needs a large amount of memory spaces of prior art by traveling through all physical source distributing and may come to determine that the channel quality indication caused, and the too high technical problem of realization cost.
For achieving the above object, provide a kind of channel quality indication of time division synchronization and code division multi-address access terminal to determine method, described channel quality indication comprises the transmission block size of recommendation and the modulation system of recommending, and wherein, comprises the steps:
First corresponding relation is set, and described first corresponding relation is at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected a kind of fixedly timeslot number and the code channel number;
After measuring the current signal interference ratio of high-speed physical downlink shared channel (HS-PDSCH), determine and the corresponding equivalent encoding rate of described current signal interference ratio by described first corresponding relation, and determine modulation system with the described current corresponding current recommendation of signal interference ratio, the corresponding relation between the modulation system that described second corresponding relation is signal interference ratio and recommendation according to predefined second corresponding relation;
Determine the transmission block size of current recommendation according to the current timeslot number of distributing to high-speed physical downlink shared channel (HS-PDSCH) and code channel number and described definite equivalent encoding rate.
Preferably, described method wherein, describedly at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected fixedly timeslot number and the code channel number is:
At the corresponding relation between equivalent encoding rate and the signal interference ratio under code channel of a time slot.
Preferably, described method, wherein, the step of the transmission block size of described definite recommendation comprises:
Determine the current data volume that can bear on the high-speed physical downlink shared channel (HS-PDSCH);
In predefined the 3rd corresponding relation, find out the data volume identical with the described current data volume that can bear or less than and approach the data volume of the described current data volume that can bear most, described the 3rd corresponding relation is the corresponding relation between the transmission block size of the data volume that can bear on the high-speed physical downlink shared channel (HS-PDSCH) and recommendation;
The transmission block size of the described pairing recommendation of data volume that finds out is defined as the transmission block size of current recommendation.
Preferably, described method, wherein, determine the data volume that can bear on the current high-speed physical downlink shared channel (HS-PDSCH) according to following formula:
The data volume that can bear on the current high-speed physical downlink shared channel (HS-PDSCH)=one a code channel data quantity transmitted * current is distributed to the timeslot number of high-speed physical downlink shared channel (HS-PDSCH) * current and is distributed to code channel number * described definite equivalent encoding rate that each time slot comprises in the time slot of high-speed physical downlink shared channel (HS-PDSCH).
Preferably, described method, wherein, find out the data volume identical with the described current data volume that can bear or less than and approach the finding step of data volume of the described current data volume that can bear most after, also comprise:
If the fall off rate of the signal interference ratio that high-speed physical downlink shared channel (HS-PDSCH) is current surpasses default first rate threshold value, then with in described the 3rd corresponding relation, compare with the transmission block size of the described pairing recommendation of data volume that finds out, the transmission block size of the recommendation of lower one-level or two-stage is defined as the transmission block size of current recommendation;
If the climbing speed of the signal interference ratio that high-speed physical downlink shared channel (HS-PDSCH) is current surpasses the second default rate-valve value, then with in described the 3rd corresponding relation, compare with the transmission block size of the described pairing recommendation of data volume that finds out, the transmission block size of the recommendation of higher one-level or two-stage is defined as the transmission block size of current recommendation.
On the other hand, provide a kind of transmission block size of recommendation of time division synchronization and code division multi-address access terminal to determine method, wherein, comprise the steps:
First corresponding relation is set, and described first corresponding relation is at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected a kind of fixedly timeslot number and the code channel number;
After measuring the current signal interference ratio of high-speed physical downlink shared channel (HS-PDSCH), determine and the corresponding equivalent encoding rate of described current signal interference ratio by described first corresponding relation;
Determine the transmission block size of current recommendation according to the current timeslot number of distributing to high-speed physical downlink shared channel (HS-PDSCH) and code channel number and described definite equivalent encoding rate.
Preferably, described method wherein, describedly at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected fixedly timeslot number and the code channel number is:
At the corresponding relation between equivalent encoding rate and the signal interference ratio under code channel of a time slot.
Another aspect provides a kind of time division synchronization and code division multi-address access terminal, wherein, comprising:
Memory module, be used to store first corresponding relation and second corresponding relation that set in advance, described first corresponding relation is at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected a kind of fixedly timeslot number and the code channel number, the corresponding relation between the modulation system that described second corresponding relation is signal interference ratio and recommendation;
The signal-to-interference ratio measurement module is used to measure the current signal interference ratio of high-speed physical downlink shared channel (HS-PDSCH);
The modulation system determination module of recommending is used for second corresponding relation according to described storage, determines the adjustment modes with the described current corresponding current recommendation of signal interference ratio;
The transmission block size determination module of recommending is used for determining according to the current timeslot number of distributing to high-speed physical downlink shared channel (HS-PDSCH) and code channel number and described definite equivalent encoding rate the transmission block size of current recommendation.
Preferably, described terminal wherein, describedly at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected fixedly timeslot number and the code channel number is:
At the corresponding relation between equivalent encoding rate and the signal interference ratio under code channel of a time slot.
Preferably, described terminal, wherein, the transmission block of described recommendation size determination module comprises:
The data volume determination module is used for determining the current data volume that can bear on the high-speed physical downlink shared channel (HS-PDSCH);
Search module, be used for predefined the 3rd corresponding relation find out the data volume identical with the described current data volume that can bear or less than and approach the data volume of the described current data volume that can bear most, described the 3rd corresponding relation is the corresponding relation between the transmission block size of the data volume that can bear on the high-speed physical downlink shared channel (HS-PDSCH) and recommendation;
Determination module as a result is used for the transmission block size of the described pairing recommendation of data volume that finds out is defined as the transmission block size of current recommendation.
Preferably, described terminal, wherein, described data volume determination module is determined the data volume that can bear on the current high-speed physical downlink shared channel (HS-PDSCH) according to following formula:
The data volume that can bear on the current high-speed physical downlink shared channel (HS-PDSCH)=one a code channel data quantity transmitted * current is distributed to the timeslot number of high-speed physical downlink shared channel (HS-PDSCH) * current and is distributed to code channel number * described definite equivalent encoding rate that each time slot comprises in the time slot of high-speed physical downlink shared channel (HS-PDSCH).
Preferably, described terminal, wherein, the transmission block of described recommendation size determination module also comprises:
Adjusting module as a result, be used for when the fall off rate of the current signal interference ratio of described high-speed physical downlink shared channel (HS-PDSCH) surpasses default first rate threshold value, the transmission block size of current recommendation is adjusted into transmission block size than the recommendation of the lower one-level of transmission block size of the described pairing recommendation of data volume that finds out or two-stage; When the climbing speed of the current signal interference ratio of described high-speed physical downlink shared channel (HS-PDSCH) surpasses the second default rate-valve value, the transmission block size of current recommendation is adjusted into transmission block size than the recommendation of the higher one-level of transmission block size of the described pairing recommendation of data volume that finds out or two-stage.
Technique effect of the present invention is:
The present invention does not directly store SIR under the various physical source distributing situations and the corresponding relation between the RTBS, and directly determine CQI by searching this corresponding relation, but by set in advance and corresponding equivalent encoding rate of previously selected a kind of physical source distributing situation and signal interference ratio between corresponding relation and, after obtaining encoding rate, determine RTBS according to current distributed time slot number and code channel number again, and and then definite CQI; Utilize technical scheme of the present invention, only equivalent code check under a kind of physical source distributing situation of need storage and the correspondence table of SIR can be saved a large amount of memory spaces;
Further, owing in technical scheme of the present invention, directly directly do not determine RTBS as the table of storage in advance according to stored relation in advance, when reality is determined RTBS, can be according to the operational environment of current reality, corresponding relation to encoding rate and RTBS carries out suitable adjustment, as when current SIR descends fast, can adjust the lower RTBS of use, when current SIR fast rise, can adjust the higher RTBS of use, thereby make the more variation of determining of adaptive channel of RTBS, increased the flexibility that realizes.
Description of drawings
Fig. 1 is the HS-PDSCH of prior art and the timing diagram of HS-SICH;
Fig. 2 is the HS-PDSCH of prior art and the timing diagram of HS-SCCH;
Fig. 3 is the schematic flow sheet of the channel quality indication processing method of the embodiment of the invention;
Fig. 4 is the schematic flow sheet that the channel quality of the embodiment of the invention is indicated a kind of specific implementation of processing method;
Fig. 5 is that the transmission block size of the recommendation of the embodiment of the invention is determined method;
Fig. 6 is the structural representation of the TD-SCDMA terminal of the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the accompanying drawings and the specific embodiments.
The inventor find not provide the CQI mapping table under the TD-SCDMA pattern in the agreement 3GPP of TD-SCDMA TS25.224, and structure CQI mapping table is the key link that realizes adaptive modulation and coding function among the HSDPA in realizing process of the present invention.
CQI provides by transmitting the estimated value of the code rate that can maximize the single transmission throughput that HS-PDSCH decoding obtains last time for the base station.The HS-PDSCH resource that CQI reporting requirement reference base station is distributed, but can only obtain CQI by measuring these HS-PDSCH resources without limits.The reference resources of CQI is meant in an independent Transmission Time Interval (TTI, Transmission Time Interval), one group of HS-PDSCH resource that UE receives, complete transmission block of carrying above.These resource information base stations can obtain by HS-SICH channel and last the relation to the relative timing between the HS-PDSCH transmission of UE of carrying CQI.CQI comprises two territory: RTBS and RMF, the mapping table in these two territories that UE adopts and base station side HS-SCCH adopt consistent.
The CQI reporting process of prior art is as follows:
UE obtains the resource allocation conditions of next HS-PDSCH by the down control channel HS-SCCH message that receives this user;
UE receives this user's HS-PDSCH, and by the CQI that measures of necessity, the purpose that CQI estimates is exactly to obtain maximum single transmission throughput under BLER is not more than 10% prerequisite;
The CQI report of a corresponding HS-PDSCH, UE should be sending on an available HS-SICH that HS-PDSCH transmits subsequently, unless HS-SICH is being close to last transmission time slot of HS-PDSCH, in this case, UE will use next available HS-SICH to transmit, the UE CQI that always transmission obtains recently on any one HS-SICH.
The inventor is in realizing process of the present invention, discovery is in the TD-SCDMA system, physical source distributing comprises 16 code channel resources and 5 time interval resources, if all resource allocations of traversal may, then need a large amount of memory spaces, preserve the CQI mapping table of various resource allocations,, increased the realization cost greatly for bottom layer realization.Therefore, for overcoming the above-mentioned shortcoming of prior art, not traveling through all resource allocations in the technical scheme of the embodiment of the invention may, but by the CQI mapping table under fixing Resource Allocation Formula of definition, promptly define one at fixing timeslot number and the CQI mapping table under the code channel number, the content of this CQI mapping table is an encoding rate sequence, record be corresponding relation between SIR and the equivalent encoding rate, and measure equivalent encoding rate under the various SIR by emulation, be that timeslot number and the code channel number of the current HS-PDSCHD of distributing to calculates RTBS according to the physical resource number of current distribution at last.
The embodiment of the invention provides a kind of channel quality indication processing method of TD-SCDMA terminal.Fig. 3 is the schematic flow sheet of the channel quality indication processing method of the embodiment of the invention.As Fig. 3, the method for this embodiment comprises the steps:
Step 301 is provided with first corresponding relation, and described first corresponding relation is at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected fixedly timeslot number and the code channel number;
Step 303 is determined the transmission block size of current recommendation according to the current timeslot number of distributing to high-speed physical downlink shared channel (HS-PDSCH) and code channel number and described definite equivalent encoding rate.
The method of this embodiment of the invention, determine RTBS by utilizing under previously selected a kind of fixedly timeslot number and the code channel number corresponding relation between the equivalent encoding rate and signal interference ratio, only need encoding rate under a kind of physical source distributing situation of storage and the corresponding relation between the signal interference ratio, and need not to store RTBS under the various resource allocation conditions and the corresponding relation between the signal interference ratio, saved a large amount of memory spaces.
Exemplarily, encoding rate and the corresponding relation between the signal interference ratio under this a kind of physical source distributing situation can draw by the emulation true environment, and be identical or similar with the simulation algorithm that obtains SIR and RTBS corresponding relation in the prior art.
In the method for this embodiment, preferably, corresponding relation under this previously selected fixedly timeslot number and the code channel number between equivalent encoding rate and the signal interference ratio is: equivalent encoding rate under code channel of a time slot and the corresponding relation between the signal interference ratio, the form that this corresponding relation can be shown exists.
Preferably, determine to comprise according to predefined second corresponding relation with the modulation system of the described current corresponding current recommendation of signal interference ratio:
Judge whether signal interference ratio reaches preset threshold value; In this way, then select a kind of modulation system for use, as the 16QAM modulation system; Otherwise, select another kind of modulation system for use, as the QPSK modulation system.Exemplarily, this threshold value can be set to 2.5.Certainly, this threshold value need be revised according to the debug results of reality as 2.5.In addition, modulation system is not limited to and above-mentioned QPSK modulation system and 16QAM modulation system, also may be the 64QAM modulation system, or the modulation system of high-order more.
Preferably, in the method for this embodiment, determine that the step of the transmission block size of recommendation comprises:
Determine the current data volume that can bear on the high-speed physical downlink shared channel (HS-PDSCH); Exemplarily, can determine the data volume that can bear on the current high-speed physical downlink shared channel (HS-PDSCH) according to following formula:
The data volume that can bear on the current high-speed physical downlink shared channel (HS-PDSCH)=one a code channel data quantity transmitted * current is distributed to the timeslot number of high-speed physical downlink shared channel (HS-PDSCH) * current and is distributed to code channel number * described definite equivalent encoding rate that each time slot comprises in the time slot of high-speed physical downlink shared channel (HS-PDSCH);
In predefined the 3rd corresponding relation, find out the data volume identical with the described current data volume that can bear or less than and approach the data volume of the described current data volume that can bear most, described the 3rd corresponding relation is the corresponding relation between the transmission block size of the data volume that can bear on the high-speed physical downlink shared channel (HS-PDSCH) and recommendation; Exemplarily, the 3rd corresponding relation is the table 9.2.3.3.5 of TD-SCDMA agreement 25.321 media access control protocols explanations (MAC protocol specification, Medium Access Control protocolspecification);
The transmission block size of the described pairing recommendation of data volume that finds out is defined as the transmission block size of current recommendation.
Preferably, finding out and the identical data volume of the described current data volume that can bear, or less than and approach the finding step of data volume of the described current data volume that can bear most after, the transmission block size that can will recommend according to the situation of change adjustment of current signal interference ratio also, if current signal interference ratio descends rapidly, for example fall off rate surpasses default first rate threshold value, then with in described the 3rd corresponding relation, compare with the transmission block size of the described pairing recommendation of data volume that finds out, the transmission block size that the transmission block size of the recommendation of lower one-level or two-stage is defined as current recommendation then in the 3rd corresponding relation, is selected the transmission block size than the above-mentioned pairing recommendation of data volume that finds out; If current signal interference ratio rises rapidly, for example climbing speed surpasses the second default rate-valve value, then with in described the 3rd corresponding relation, compare with the transmission block size of the described pairing recommendation of data volume that finds out, the transmission block size of the recommendation of higher one-level or two-stage is defined as the transmission block size of current recommendation.
Below by example the CQI of the embodiment of the invention is determined that the specific implementation of method describes in further detail.As Fig. 4, the CQI of this embodiment determines that method comprises the steps:
Step 401, UE receives HS-SCCH; Usually UE begins to receive HS-SCCH information after receiving the upper strata instruction;
Step 402, UE resolves the HS-SCCH information that receives, and therefrom obtains the resource allocation conditions of next HS-PDSCH, comprising: the time slot of channel and code channel information;
Step 403, according to the time slot and the code channel information of the rapid HS-PDSCH channel that obtains of previous step, UE receives the HS-PDSCH channel information;
Step 404, UE decoding HS-PDSCH channel information, and HS-PDSCH carried out sir measurement; The measurement of existing SIR has many methods, exemplarily, can measure according to the symbol before the demodulation, and the measurement of SIR is not a content of the present invention, does not do detailed elaboration at this;
Step 405, UE is according to the sir measurement result, search the CQI mapping table that sets in advance according to the embodiment of the invention, promptly search the equivalent encoding rate under code channel of a time slot that sets in advance and the corresponding relation between the signal interference ratio SIR, obtain and the corresponding equivalent encoding rate of the current SIR that measures; The CQI mapping table that this sets in advance is to obtain by emulation in advance; Table 1 provided in the embodiment of the invention, example by emulation CQI mapping table that obtain, that set in advance and store; As shown in table 1, this mapping table comprises: SIR item and the equivalent encoding rate item corresponding with SIR; This table is corresponding to the resource allocation conditions of a code channel of a time slot, and the content of this table is an encoding rate sequence, and this table is a step-length with 0.01, be that equivalent encoding rate is a step-length with 0.01, the value from 0.33 to 1 of equivalence encoding rate, corresponding to SIR approximately from 1 to 24.5dB, totally 112 groups of data, need 112 each memory space, wherein, in this embodiment, be the switching point of RMF with SIR=2.5dB, at this switching point encoding rate individual saltus step is arranged, from 0.88 to 0.45.And determine method according to the CQI of prior art, all physical source distributing situations are promptly related to the situation in totally 80 of 5 time slots, 16 code channels of each time slot, with 0.5dB is step-length (being that SIR is step-length with 0.5dB), the SIR value from 0 to 25dB, corresponding RTBS just needs 50 * 80=4000 memory space; So by contrast, the method for the embodiment of the invention can be saved memory space greatly;
| Signal interference ratio SIR | The equivalence encoding rate |
| 1.0123 | 0.33333 |
| 1.0147 | 0.34 |
| . . . | . . . |
| 2.3312 | 0.86 |
| 2.4195 | 0.87 |
| 2.5078 | 0.88 |
| 2.5073 | 0.45 |
| . . . | . . . |
| 22.303 | 0.99 |
| 24.136 | 1 |
Table 1
Step 406, according to checking result, and current physical source distributing situation, promptly current timeslot number and the code channel number of distributing to HS-PDSCH calculates RTBS, and determines RMF according to the SIR that measures, thereby determine CQI; In practice, can determine that the threshold value of modulation system is set to 2.5, if the SIR that measures less than 2.5, then adopts the QPSK modulation system, otherwise, adopt the 16QAM modulation system; For example, current physical source distributing situation is 3 time slots, 10 code channels of each time slot, and measured SIR is 2.4, then obtaining encoding rate by tabling look-up is 0.87, because SIR is less than 2.5, modulation system is QPSK,
In this example, RTBS=88 * 10 * 3 * 0.87=2296.8, wherein, 88 is a code channel data quantity transmitted, and 10 give the code channel number of each time slot, and 3 is timeslot number, and 0.87 is definite equivalent encoding rate; According to the table 9.2.3.3.5 of TD-SCDMA agreement 25.321,2296.8 are between the 35th value 2236 and the 36th value 2238, get than low value, thus RTBS=35, thus determined CQI.
Preferably, can also neatly RTBS be adjusted according to the actual conditions of current channel.As, SIR descends very fast, can choose the RTBS of lower one-level or two-stage, and is very fast if SIR descends in this embodiment, then can choose RTBS=34 or 33; If SIR raises rapidly, can choose the RTBS of higher one-level or two-stage, in this embodiment,, then can choose RTBS=36 or 37, with the variation of adaptive channel better if SIR raises rapidly.
The transmission block size that the embodiment of the invention also discloses a kind of recommendation of time division synchronization and code division multi-address access terminal is determined method.As Fig. 5, the transmission block of the recommendation of this embodiment size determines that method comprises the steps:
Step 501 is provided with first corresponding relation, and described first corresponding relation is at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected a kind of fixedly timeslot number and the code channel number;
Step 502 after measuring the current signal interference ratio of high-speed physical downlink shared channel (HS-PDSCH), is determined and the corresponding equivalent encoding rate of described current signal interference ratio by described first corresponding relation;
Step 503 is determined the transmission block size of current recommendation according to the current timeslot number of distributing to high-speed physical downlink shared channel (HS-PDSCH) and code channel number and described definite equivalent encoding rate.
Preferably, described method wherein, describedly at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected fixedly timeslot number and the code channel number is: at the corresponding relation between equivalent encoding rate and the signal interference ratio under code channel of a time slot.
RTBS is the part of CQI, and the definite method of the RTBS in definite method of the RTBS of this embodiment and the definite method of above-mentioned CQI is similar, and other preferred embodiment is also similar, does not repeat them here.
The embodiment of the invention also discloses a kind of time division synchronization and code division multi-address access terminal.As Fig. 6, the terminal 600 of this embodiment is that user equipment (UE) comprises: memory module 601, be used to store first corresponding relation and second corresponding relation that set in advance, described first corresponding relation is at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected a kind of fixedly timeslot number and the code channel number, the corresponding relation between the modulation system that described second corresponding relation is signal interference ratio and recommendation; Signal-to-interference ratio measurement module 602 is used to measure the current signal interference ratio of high-speed physical downlink shared channel (HS-PDSCH); The modulation system determination module of recommending 603 is used for second corresponding relation according to described storage, determines the adjustment modes with the described current corresponding current recommendation of signal interference ratio; The transmission block size determination module of recommending 604 is used for determining according to the current timeslot number of distributing to high-speed physical downlink shared channel (HS-PDSCH) and code channel number and described definite equivalent encoding rate the transmission block size of current recommendation.
Preferably, described terminal wherein, describedly at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected fixedly timeslot number and the code channel number is: at the corresponding relation between equivalent encoding rate and the signal interference ratio under code channel of a time slot.
Preferably, described terminal, wherein, the transmission block of described recommendation size determination module comprises:
The data volume determination module is used for determining the current data volume that can bear on the high-speed physical downlink shared channel (HS-PDSCH);
Search module, be used for predefined the 3rd corresponding relation find out the data volume identical with the described current data volume that can bear or less than and approach the data volume of the described current data volume that can bear most, described the 3rd corresponding relation is the corresponding relation between the transmission block size of the data volume that can bear on the high-speed physical downlink shared channel (HS-PDSCH) and recommendation;
Determination module as a result is used for the transmission block size of the described pairing recommendation of data volume that finds out is defined as the transmission block size of current recommendation.
Preferably, described terminal, wherein, described data volume determination module is determined the data volume that can bear on the current high-speed physical downlink shared channel (HS-PDSCH) according to following formula:
The data volume that can bear on the current high-speed physical downlink shared channel (HS-PDSCH)=one a code channel data quantity transmitted * current is distributed to the timeslot number of high-speed physical downlink shared channel (HS-PDSCH) * current and is distributed to code channel number * described definite equivalent encoding rate that each time slot comprises in the time slot of high-speed physical downlink shared channel (HS-PDSCH).
Preferably, described terminal, wherein, the transmission block of described recommendation size determination module also comprises:
Adjusting module as a result, be used for when the fall off rate of the current signal interference ratio of described high-speed physical downlink shared channel (HS-PDSCH) surpasses default first rate threshold value, the transmission block size of current recommendation is adjusted into transmission block size than the recommendation of the lower one-level of transmission block size of the described pairing recommendation of data volume that finds out or two-stage; When the climbing speed of the current signal interference ratio of described high-speed physical downlink shared channel (HS-PDSCH) surpasses the second default rate-valve value, the transmission block size of current recommendation is adjusted into transmission block size than the recommendation of the higher one-level of transmission block size of the described pairing recommendation of data volume that finds out or two-stage.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. method is determined in the indication of the channel quality of a time division synchronization and code division multi-address access terminal, and described channel quality indication comprises the transmission block size of recommendation and the modulation system of recommending, and it is characterized in that, comprises the steps:
First corresponding relation is set, and described first corresponding relation is at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected a kind of fixedly timeslot number and the code channel number;
After measuring the current signal interference ratio of high-speed physical downlink shared channel (HS-PDSCH), determine and the corresponding equivalent encoding rate of described current signal interference ratio by described first corresponding relation, and determine modulation system with the described current corresponding current recommendation of signal interference ratio, the corresponding relation between the modulation system that described second corresponding relation is signal interference ratio and recommendation according to predefined second corresponding relation;
Determine the transmission block size of current recommendation according to the current timeslot number of distributing to high-speed physical downlink shared channel (HS-PDSCH) and code channel number and described definite equivalent encoding rate.
2. method according to claim 1 is characterized in that, describedly at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected fixedly timeslot number and the code channel number is:
At the corresponding relation between equivalent encoding rate and the signal interference ratio under code channel of a time slot.
3. method according to claim 2 is characterized in that, the step of the transmission block size of described definite recommendation comprises:
Determine the current data volume that can bear on the high-speed physical downlink shared channel (HS-PDSCH);
In predefined the 3rd corresponding relation, find out the data volume identical with the described current data volume that can bear or less than and approach the data volume of the described current data volume that can bear most, described the 3rd corresponding relation is the corresponding relation between the transmission block size of the data volume that can bear on the high-speed physical downlink shared channel (HS-PDSCH) and recommendation;
The transmission block size of the described pairing recommendation of data volume that finds out is defined as the transmission block size of current recommendation.
4. method according to claim 3 is characterized in that, determines the data volume that can bear on the current high-speed physical downlink shared channel (HS-PDSCH) according to following formula:
The data volume that can bear on the current high-speed physical downlink shared channel (HS-PDSCH)=one a code channel data quantity transmitted * current is distributed to the timeslot number of high-speed physical downlink shared channel (HS-PDSCH) * current and is distributed to code channel number * described definite equivalent encoding rate that each time slot comprises in the time slot of high-speed physical downlink shared channel (HS-PDSCH).
5. according to claim 3 or 4 described methods, it is characterized in that, find out the data volume identical with the described current data volume that can bear or less than and approach the finding step of data volume of the described current data volume that can bear most after, also comprise:
If the fall off rate of the signal interference ratio that high-speed physical downlink shared channel (HS-PDSCH) is current surpasses default first rate threshold value, then with in described the 3rd corresponding relation, compare with the transmission block size of the described pairing recommendation of data volume that finds out, the transmission block size of the recommendation of lower one-level or two-stage is defined as the transmission block size of current recommendation;
If the climbing speed of the signal interference ratio that high-speed physical downlink shared channel (HS-PDSCH) is current surpasses the second default rate-valve value, then with in described the 3rd corresponding relation, compare with the transmission block size of the described pairing recommendation of data volume that finds out, the transmission block size of the recommendation of higher one-level or two-stage is defined as the transmission block size of current recommendation.
6. the transmission block of the recommendation of time division synchronization and code division multi-address access terminal size is determined method, it is characterized in that, comprises the steps:
First corresponding relation is set, and described first corresponding relation is at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected a kind of fixedly timeslot number and the code channel number;
After measuring the current signal interference ratio of high-speed physical downlink shared channel (HS-PDSCH), determine and the corresponding equivalent encoding rate of described current signal interference ratio by described first corresponding relation;
Determine the transmission block size of current recommendation according to the current timeslot number of distributing to high-speed physical downlink shared channel (HS-PDSCH) and code channel number and described definite equivalent encoding rate.
7. a time division synchronization and code division multi-address access terminal is characterized in that, comprising:
Memory module, be used to store first corresponding relation and second corresponding relation that set in advance, described first corresponding relation is at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected a kind of fixedly timeslot number and the code channel number, the corresponding relation between the modulation system that described second corresponding relation is signal interference ratio and recommendation;
The signal-to-interference ratio measurement module is used to measure the current signal interference ratio of high-speed physical downlink shared channel (HS-PDSCH);
The modulation system determination module of recommending is used for second corresponding relation according to described storage, determines the adjustment modes with the described current corresponding current recommendation of signal interference ratio;
The transmission block size determination module of recommending is used for determining according to the current timeslot number of distributing to high-speed physical downlink shared channel (HS-PDSCH) and code channel number and described definite equivalent encoding rate the transmission block size of current recommendation.
8. terminal according to claim 7 is characterized in that, describedly at the corresponding relation between equivalent encoding rate and the signal interference ratio under previously selected fixedly timeslot number and the code channel number is:
At the corresponding relation between equivalent encoding rate and the signal interference ratio under code channel of a time slot.
9. terminal according to claim 8 is characterized in that, the transmission block size determination module of described recommendation comprises:
The data volume determination module is used for determining the current data volume that can bear on the high-speed physical downlink shared channel (HS-PDSCH);
Search module, be used for predefined the 3rd corresponding relation find out the data volume identical with the described current data volume that can bear or less than and approach the data volume of the described current data volume that can bear most, described the 3rd corresponding relation is the corresponding relation between the transmission block size of the data volume that can bear on the high-speed physical downlink shared channel (HS-PDSCH) and recommendation;
Determination module as a result is used for the transmission block size of the described pairing recommendation of data volume that finds out is defined as the transmission block size of current recommendation.
10. terminal according to claim 9 is characterized in that, the transmission block size determination module of described recommendation also comprises:
Adjusting module as a result, be used for when the fall off rate of the current signal interference ratio of described high-speed physical downlink shared channel (HS-PDSCH) surpasses default first rate threshold value, the transmission block size of current recommendation is adjusted into transmission block size than the recommendation of the lower one-level of transmission block size of the described pairing recommendation of data volume that finds out or two-stage; When the climbing speed of the current signal interference ratio of described high-speed physical downlink shared channel (HS-PDSCH) surpasses the second default rate-valve value, the transmission block size of current recommendation is adjusted into transmission block size than the recommendation of the higher one-level of transmission block size of the described pairing recommendation of data volume that finds out or two-stage.
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Effective date of registration: 20151215 Address after: Dameisha Yantian District of Shenzhen City, Guangdong province 518085 Building No. 1 Patentee after: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD. Address before: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice Patentee before: ZTE Corporation |
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Application publication date: 20100120 Assignee: Xi'an Chris Semiconductor Technology Co. Ltd. Assignor: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD. Contract record no.: 2019440020036 Denomination of invention: Time division synchronous code division multiple access terminal and method for determining channel quality instruction Granted publication date: 20130116 License type: Common License Record date: 20190619 |