CN101931501A - Method and device for determining size of transmission blocks - Google Patents
Method and device for determining size of transmission blocks Download PDFInfo
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- CN101931501A CN101931501A CN2010102665976A CN201010266597A CN101931501A CN 101931501 A CN101931501 A CN 101931501A CN 2010102665976 A CN2010102665976 A CN 2010102665976A CN 201010266597 A CN201010266597 A CN 201010266597A CN 101931501 A CN101931501 A CN 101931501A
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Abstract
The invention discloses a method and a device for determining the size of transmission blocks. In the scheme, whether the number of resource blocks allocated to user equipment exceeds a threshold value is judged, if the number of the resource blocks does not exceed the threshold, a value determined according to a corresponding relationship of ITBS and NPRB is directly used as the size of the transmission blocks transmitted by a third or fourth layer, and if the number of the resource blocks exceeds the threshold, the value determined according to a corresponding relationship of ITBS and NPRB is converted to obtain the size of the transmission blocks transmitted by the third or fourth layer, wherein the ITBS is an index of the size of the transmission blocks allocated to the user equipment by a base station, and the NPRB is the number of the resource blocks allocated to the user equipment by the base station. According to the scheme provided by the invention, the size of the transmission blocks transmitted by the third or fourth layer can be determined in an LTE-Advanced mobile communication system, so higher system capacity is achieved and the complete compatibility with the conventional system is achieved.
Description
Technical field
The present invention relates to the calculating field of transmission block size when descending multilayer is launched in advanced Long Term Evolution (LTE-Advanced) mobile communication system, be meant (the Physical Downlink Shared Channel of Physical Downlink Shared Channel in the LTE-Advanced physical layer especially, PDSCH) (Multiple-Input Multiple-Out-put MIMO) determines the method and the device of transmission block size with 3 layers or 4 layers emission the time to carry out multiple-input and multiple-output.
Background technology
According to 3G (Third Generation) Moblie partner program (The 3rd-Generation Partnership Project, the 7.2nd trifle (" Downlink spatial multiplexing ") of technical report TR 36.814 V9.0.0 3GPP) (" Further advancements for E-UTRA physicallayer aspects "), LTE-Advanced expands to 8 * 8MIMO with 4 present * 4MIMO, and coded word, is that transmission block can be launched with 4 layers at most.
According to the 7.1.7.2.2 joint of 3GPP TS 36.213 V9.2.0,3GPP has defined definite method of transmission block size when a coded word is launched with 2 layers.But 3GPP does not determine as yet how the transmission block size is determined when a coded word is launched with 3 layers or 4 layers at present.
Can support 8 * 8MIMO for making the LTE-Advanced mobile communication system, and support a coded word with 3 layers or 4 layers of emission, need be a kind of when launching for 3 layers or 4 layers, the transmission block size of a coded word is determined scheme, but does not also have clear and definite implementation at present.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and device of definite transmission block size, can determine the transmission block size with 3 layers or 4 layers emission.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that
A kind of method of definite transmission block size, when launching with 3 layers or 4 layers, this method comprises: judge whether the Resource Block quantity of distributing to subscriber equipment surpasses threshold value, if do not surpass, then will be according to I
TBSWith N
PRBThe numerical value determined of corresponding relation directly as transmission block size with 3 layers or 4 layers emission; If surpass, to according to I
TBSWith N
PRBThe numerical value determined of corresponding relation be converted to transmission block size with 3 layers or 4 layers emission; Wherein, I
TBSFor base station assigns is given the index of the transmission block size of subscriber equipment, N
PRBGive the Resource Block quantity of subscriber equipment for base station assigns.
With 3 layers of when emission, described will be according to I
TBSWith N
PRBThe numerical value determined of corresponding relation directly as transmission block size with 3 layers of emission, be specially: by entrance (I
TBS, 3N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains as transmission block size with 3 layers of emission; Perhaps, by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, the numerical value that obtains be multiply by 3 as the transmission block size with 3 layers of emission; Perhaps, by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains with by entrance (I
TBS, 2N
PRB) at I
TBSWith N
PRBCorresponding relation in search the numerical value sum that obtains as transmission block size with 3 layers of emission.
With 3 layers of when emission, described to according to I
TBSWith N
PRBThe numerical value determined of corresponding relation be converted to transmission block size with 3 layers of emission, be specially: earlier by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains transmission block size, determine transmission block size according to the transmission block size of one deck and the corresponding relation of three layers transmission block size then with 3 layers of emission as one deck; Perhaps, by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, the numerical value that obtains be multiply by 3 as the transmission block size with 3 layers of emission; Perhaps, by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains and this numerical value in the corresponding relation of the transmission block size of one deck and two layers transmission block size the corresponding big or small sum of two layers transmission block as transmission block size with 3 layers of emission.
With 4 layers of when emission, described will be according to I
TBSWith N
PRBThe numerical value determined of corresponding relation directly as transmission block size with 4 layers of emission, be specially: by entrance (I
TBS, 4N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains as transmission block size with 4 layers of emission; Perhaps, by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, the numerical value that obtains be multiply by 4 as the transmission block size with 4 layers of emission; Perhaps, by entrance (I
TBS, 2N
PRB) at I
TBSWith N
PRBCorresponding relation in search, the numerical value that obtains be multiply by 2 as the transmission block size with 4 layers of emission; Perhaps, by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains with by entrance (I
TBS, 3N
PRB) at I
TBSWith N
PRBCorresponding relation in search the numerical value sum that obtains as transmission block size with 4 layers of emission.
With 4 layers of when emission, described to according to I
TBSWith N
PRBThe numerical value determined of corresponding relation be converted to transmission block size with 4 layers of emission, be specially: earlier by entrance (I
TBS, N
PRB)At I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains transmission block size, determine transmission block size according to the transmission block size of one deck and the corresponding relation of four layers transmission block size then with 4 layers of emission as one deck; Perhaps, by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, the numerical value that obtains be multiply by 4 as the transmission block size with 4 layers of emission; Perhaps, by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains and this numerical value in the corresponding relation of the transmission block size of one deck and two layers transmission block size the corresponding big or small sum of three layers transmission block as transmission block size with 4 layers of emission; Perhaps, earlier by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, obtain a numerical value, search the transmission block size of this numerical value corresponding bilayer in the corresponding relation of the transmission block of one deck size and two layers transmission block size then, the transmission block size that this is double-deck multiply by 2 as the transmission block size with 4 layers of emission.
This method further comprises: after the Bit data of the coded word of described transmission block size is encoded into symbol, launch on each layer according to the distributed number of layer.
Described threshold value is 36 during with 3 layers of emission, and described threshold value is 27 during with 4 layers of emission.
Determine the transmission block size when a kind of device of definite transmission block size, this device are used for 3 layers or 4 layers emission, comprising:
Judging unit is used for the base station and judges whether the Resource Block quantity of distributing to subscriber equipment surpasses threshold value, and judged result is offered determining unit;
Determining unit is used for handling according to the judged result of judging unit, does not surpass threshold value if distribute to the Resource Block quantity of subscriber equipment, will be according to I
TBSWith N
PRBThe numerical value determined of corresponding relation directly as transmission block size, if surpass threshold value, to according to I with 3 layers or 4 layers emission
TBSWith N
PRBThe numerical value determined of corresponding relation be converted to transmission block size with 3 layers or 4 layers emission.
Described determining unit comprises four determination modules:
The judged result of judging unit is that the coded word of subscriber equipment surpasses threshold value with 3 layers of emission and the Resource Block quantity of distributing to this subscriber equipment, and first determination module is used for the wherein a kind of transmission block size of determining this coded word with 3 layers of emission according to three kinds of processing modes;
The judged result of judging unit is that the coded word of subscriber equipment surpasses threshold value with 3 layers of emission and the Resource Block quantity of distributing to this subscriber equipment, and second determination module is used for the wherein a kind of transmission block size of determining this coded word with 3 layers of emission according to other three kinds of processing modes;
The judged result of judging unit is that the coded word of subscriber equipment surpasses threshold value with 4 layers of emission and the Resource Block quantity of distributing to this subscriber equipment, and the 3rd determination module is used for the wherein a kind of transmission block size of determining this coded word with 4 layers of emission according to four kinds of processing modes;
The judged result of judging unit is that the coded word of subscriber equipment surpasses threshold value with 4 layers of emission and the Resource Block quantity of distributing to this subscriber equipment, and the 4th determination module is used for the wherein a kind of transmission block size of determining this coded word with 4 layers of emission according to other four kinds of processing modes.
Described device further comprises: transmitter unit, after being used for Bit data with the coded word of described transmission block size and being encoded into symbol, on each layer, launch according to the distributed number of layer.
According to scheme provided by the invention, can in the LTE-Advanced mobile communication system, determine transmission block size with 3 layers or 4 layers emission, thereby obtain the higher system capacity, and it is compatible fully with existing system, and then make the LTE-Advanced mobile communication system can support the emission of coded word with 3 layers or 4 layers, support 8 * 8MIMO.
Description of drawings
Fig. 1 is for determining the schematic flow sheet of transmission block size among the present invention during with 3 layers or 4 layers of emission;
Fig. 2 is for determining the idiographic flow schematic diagram of transmission block size among the present invention during with 3 layers or 4 layers of emission;
Fig. 3 is for determining the apparatus structure schematic diagram of transmission block size among the present invention during with 3 layers or 4 layers of emission.
Embodiment
Fig. 1 is for determining the schematic flow sheet of transmission block size among the present invention during with 3 layers or 4 layers of emission, as shown in Figure 1, determines that the concrete processing of transmission block size comprises during with 3 layers or 4 layers of emission:
Step 101: the base station judges that whether the Resource Block quantity of distributing to subscriber equipment surpasses threshold value, if do not surpass, then continues execution in step 102; If surpass, then continue execution in step 103.Described threshold value can calculate according to the maximum quantity of the Resource Block of setting that can distribute to subscriber equipment and the quantity of layer.
Step 102: the base station will be according to I
TBSWith N
PRBThe numerical value determined of corresponding relation directly as transmission block size with 3 layers or 4 layers emission, can further continue execution in step 104 then.Wherein, I
TBSFor base station assigns is given the index of the transmission block size of subscriber equipment, N
PRBGive the Resource Block quantity of subscriber equipment for base station assigns.
Step 103: the base station is to according to I
TBSWith N
PRBThe numerical value determined of corresponding relation be converted to transmission block size with 3 layers or 4 layers emission, can further continue execution in step 104 then.Wherein, I
TBSFor base station assigns is given the index of the transmission block size of subscriber equipment, N
PRRGive the Resource Block quantity of subscriber equipment for base station assigns.
Step 104: launch on each layer according to the distributed number of layer after the Bit data of the coded word of respective transmissions block size is encoded into symbol the base station.
Fig. 2 is for determining the idiographic flow schematic diagram of transmission block size among the present invention during with 3 layers or 4 layers of emission, as shown in Figure 2, determines that the concrete processing of transmission block size comprises during with 3 layers or 4 layers of emission:
Step 201: the base station checks that whether the coded word of a certain subscriber equipment is with 3 layers or 4 layers of emission, if then continue execution in step 202; If not, then continue execution in step 209.
Step 202: this coded word is checked with 3 layers of emission in the base station whether, if with 3 layers of emission, then continue execution in step 203; If not with 3 layers of emission, then show it is with 4 layers of emission, continue execution in step 206.
Particularly, the base station can pass through the upper strata, as the medium access control (Media Access Control, MAC) Ceng input information determine subscriber equipment coded word whether with 3 layers or 4 layers of emission, and specifically be with 3 layers of emission or with 4 layers of emission.
Step 203: the base station checks that whether the Resource Block quantity of distributing to this subscriber equipment surpasses 36, if do not surpass, then continues execution in step 204; If surpass, then continue execution in step 205.
If it is 110 that the maximum quantity of the Resource Block of subscriber equipment can be distributed in the setting base station, then also round downwards divided by 3 110, obtain threshold value 36.
Step 204: the base station is according to wherein a kind of transmission block size of determining this coded word with 3 layers of emission of following three kinds of processing modes, and execution in step 209 then.In the practical application, the wherein a kind of of following three kinds of processing modes can be configured in the base station, so that the definite transmission block size with 3 layers of emission of respective handling mode is adopted in the base station.
Processing mode A-I: by entrance (I
TBS, 3N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, as the transmission block size with 3 layers of emission, table 1 is the signal of the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920 with the numerical value that obtains;
Table 1
Processing mode A-II: by entrance (I
TBS, N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, the numerical value that obtains be multiply by 3 as the transmission block size with 3 layers of emission;
Processing mode A-III: by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation, be to search among the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, with the numerical value that obtains with by entrance (I
TBS, 2N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search the numerical value sum that obtains as transmission block size with 3 layers of emission.
Step 205: the base station is according to wherein a kind of transmission block size of determining this coded word with 3 layers of emission of following other three kinds of processing modes, and execution in step 209 then.In the practical application, the wherein a kind of of following three kinds of processing modes can be configured in the base station, so that the definite transmission block size with 3 layers of emission of respective handling mode is adopted in the base station.
Processing mode B-I: earlier by entrance (I
TBS, N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, with the numerical value that obtains transmission block size as one deck, determine transmission block size according to the transmission block of one deck size and the corresponding relation of three layers transmission block size then with 3 layers of emission, promptly according to before search the numerical value that obtains and in table 2, search value corresponding, with this numerical value of obtaining as transmission block size with 3 layers of emission;
Table 2
Processing mode B-II: by entrance (I
TBS, N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, the numerical value that obtains be multiply by 3 as the transmission block size with 3 layers of emission;
Processing mode B-III: by entrance (I
TBS, N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, with the numerical value that obtains and this numerical value in the corresponding relation of the transmission block size of one deck and two layers transmission block size the corresponding big or small sum of two layers transmission block as transmission block size with 3 layers of emission, corresponding two layers transmission block size sum is as the transmission block size with 3 layers of emission in the table 7.1.7.2.2-1 of TS36.213-920 to be about to search the numerical value that obtains and this numerical value, and table 3 is the signal of the 7.1.7.2.2-1 of 3GPP agreement TS36.213-920.
| TBS_L1 | TBS_L2 | TBS_L1 | TBS_L2 | TBS_L1 | TBS_L2 | TBS_L1 | TBS_L2 |
| 1544 | 3112 | 3752 | 7480 | 10296 | 20616 | 28336 | 57336 |
| 1608 | 3240 | 3880 | 7736 | 10680 | 21384 | 29296 | 59256 |
| 1672 | 3368 | 4008 | 7992 | 11064 | 22152 | 30576 | 61664 |
| 1736 | 3496 | 4136 | 8248 | 11448 | 22920 | 31704 | 63776 |
| 1800 | 3624 | 4264 | 8504 | 11832 | 23688 | 32856 | 66592 |
| 1864 | 3752 | 4392 | 8760 | 12216 | 24496 | 34008 | 68808 |
| 1928 | 3880 | 4584 | 9144 | 12576 | 25456 | 35160 | 71112 |
| 1992 | 4008 | 4776 | 9528 | 12960 | 25456 | 36696 | 73712 |
| 2024 | 4008 | 4968 | 9912 | 13536 | 27376 | 37888 | 76208 |
| 2088 | 4136 | 5160 | 10296 | 14112 | 28336 | 39232 | 78704 |
| 2152 | 4264 | 5352 | 10680 | 14688 | 29296 | 40576 | 81176 |
| 2216 | 4392 | 5544 | 11064 | 15264 | 30576 | 42368 | 84760 |
| 2280 | 4584 | 5736 | 11448 | 15840 | 31704 | 43816 | 87936 |
| 2344 | 4776 | 5992 | 11832 | 16416 | 32856 | 45352 | 90816 |
| 2408 | 4776 | 6200 | 12576 | 16992 | 34008 | 46888 | 93800 |
| 2472 | 4968 | 6456 | 12960 | 17568 | 35160 | 48936 | 97896 |
| 2536 | 5160 | 6712 | 13536 | 18336 | 36696 | 51024 | 101840 |
| 2600 | 5160 | 6968 | 14112 | 19080 | 37888 | 52752 | 105528 |
| 2664 | 5352 | 7224 | 14688 | 19848 | 39232 | 55056 | 110136 |
| 2728 | 5544 | 7480 | 14688 | 20616 | 40576 | 57336 | 115040 |
| 2792 | 5544 | 7736 | 15264 | 21384 | 42368 | 59256 | 119816 |
| 2856 | 5736 | 7992 | 15840 | 22152 | 43816 | 61664 | 124464 |
| 2984 | 5992 | 8248 | 16416 | 22920 | 45352 | 63776 | 128496 |
| 3112 | 6200 | 8504 | 16992 | 23688 | 46888 | 66592 | 133208 |
| 3240 | 6456 | 8760 | 17568 | 24496 | 48936 | 68808 | 137792 |
| 3368 | 6712 | 9144 | 18336 | 25456 | 51024 | 71112 | 142248 |
| 3496 | 6968 | 9528 | 19080 | 26416 | 52752 | 73712 | 146856 |
| 3624 | 7224 | 9912 | 19848 | 27376 | 55056 | 75376 | 149776 |
Table 3
Step 206: the base station checks that whether the Resource Block quantity of distributing to this subscriber equipment surpasses 27, if do not surpass, then continues execution in step 207; If surpass, then continue execution in step 208.
If it is 110 that the maximum quantity of the Resource Block of subscriber equipment can be distributed in the setting base station, then also round downwards divided by 4 110, obtain threshold value 27.
Step 207: the base station is according to wherein a kind of transmission block size of determining this coded word with 4 layers of emission of following four kinds of processing modes, and execution in step 209 then.In the practical application, the wherein a kind of of following four kinds of processing modes can be configured in the base station, so that the definite transmission block size with 4 layers of emission of respective handling mode is adopted in the base station.
Processing mode C-I: by entrance (I
TBS, 4N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, with the numerical value that obtains as transmission block size with 4 layers of emission;
Processing mode C-II: by entrance (I
TBS, N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, the numerical value that obtains be multiply by 4 as the transmission block size with 4 layers of emission;
Processing mode C-III: by entrance (I
TBS, 2N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, the numerical value that obtains be multiply by 2 as the transmission block size with 4 layers of emission;
Processing mode C-IV: by entrance (I
TBS, N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, with the numerical value that obtains with by entrance (I
TBS, 3N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search the numerical value sum that obtains as transmission block size with 4 layers of emission.
Step 208: the base station is according to wherein a kind of transmission block size of determining this coded word with 4 layers of emission of following other four kinds of processing modes, and execution in step 209 then.In the practical application, the wherein a kind of of following four kinds of processing modes can be configured in the base station, so that the definite transmission block size with 4 layers of emission of respective handling mode is adopted in the base station.
Processing mode D-I: earlier by entrance (I
TBS, N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, with the numerical value that obtains transmission block size as one deck, determine transmission block size according to the transmission block of one deck size and the corresponding relation of four layers transmission block size then with 4 layers of emission, promptly according to before search the numerical value that obtains and in table 4, search value corresponding, with this numerical value of obtaining as transmission block size with 4 layers of emission;
Table 4
Processing mode D-II: by entrance (I
TBS, N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, the numerical value that obtains be multiply by 4 as the transmission block size with 4 layers of emission;
Processing mode D-III: by entrance (I
TBS, N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, with the numerical value that obtains and this numerical value in table 2 corresponding three layers transmission block size sum as transmission block size with 4 layers of emission;
Processing mode D-IV: earlier by entrance (I
TBS, N
PRB) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, obtain a numerical value, search the transmission block size of this numerical value corresponding bilayer in the table 7.1.7.2.2-1 of TS36.213-920 then, the transmission block size that this is double-deck multiply by 2 as the transmission block size with 4 layers of emission.
Step 209: launch on each layer according to the distributed number of layer after the Bit data of the coded word of respective transmissions block size is encoded into symbol the base station.
Particularly, the base station can be evenly distributed in the symbol behind the coding each layer and go up emission, and the symbol distribution after also can will encoding not according to average mode is launched on each layer, for example, the symbol of 1 layer, 2 layers distribution is less, and 3 layers or 3 layers of symbol with 4 layers of distribution are relative more.
The above I
TBSFor base station assigns is given the index of the transmission block size of subscriber equipment, N
PRBGive the Resource Block quantity of subscriber equipment for base station assigns; The table 7.1.7.2.1-1 of the above 3GPP agreement TS36.213-920 is I
TBSWith N
PRBCorresponding relation.
Fig. 3 is for determining the apparatus structure schematic diagram of transmission block size among the present invention during with 3 layers or 4 layers of emission, and as shown in Figure 3, this device comprises: judging unit and determining unit.Wherein, judging unit is used for the base station and judges whether the Resource Block quantity of distributing to subscriber equipment surpasses threshold value, and judged result is offered determining unit; Determining unit is used for handling according to the judged result of judging unit, does not surpass threshold value if distribute to the Resource Block quantity of subscriber equipment, will be according to I
TBSWith N
PRBThe numerical value determined of corresponding relation directly as transmission block size, if surpass threshold value, to according to I with 3 layers or 4 layers emission
TBSWith N
PRBThe numerical value determined of corresponding relation be converted to transmission block size with 3 layers or 4 layers emission.
This device further comprises: transmitter unit, after being used for Bit data with the coded word of respective transmissions block size and being encoded into symbol, on each layer, launch according to the distributed number of layer.
Particularly, determining unit comprises four determination modules: first determination module, second determination module, the 3rd determination module and the 4th determination module, wherein,
The judged result of judging unit is that the coded word of subscriber equipment surpasses threshold value with 3 layers of emission and the Resource Block quantity of distributing to this subscriber equipment, and first determination module is used for the wherein a kind of transmission block size of determining this coded word with 3 layers of emission according to aforementioned processing mode A-I, A-II, A-III;
The judged result of judging unit is that the coded word of subscriber equipment surpasses threshold value with 3 layers of emission and the Resource Block quantity of distributing to this subscriber equipment, and second determination module is used for the wherein a kind of transmission block size of determining this coded word with 3 layers of emission according to aforementioned processing mode B-I, B-II, B-III;
The judged result of judging unit is that the coded word of subscriber equipment surpasses threshold value with 4 layers of emission and the Resource Block quantity of distributing to this subscriber equipment, and the 3rd determination module is used for the wherein a kind of transmission block size of determining this coded word with 4 layers of emission according to aforementioned processing mode C-I, C-II, C-III, C-IV;
The judged result of judging unit is that the coded word of subscriber equipment surpasses threshold value with 4 layers of emission and the Resource Block quantity of distributing to this subscriber equipment, and the 4th determination module is used for the wherein a kind of transmission block size of determining this coded word with 4 layers of emission according to aforementioned processing mode D-I, D-II, D-III, D-IV.
Below by instantiation specific implementation of the present invention is further elaborated.
Instantiation one
In this example, the coded word of a certain subscriber equipment need be with 3 layers of emission, and base station assigns is given the index I of the transmission block size of this subscriber equipment
TBS=15, distribute to the Resource Block quantity N of subscriber equipment
PRB=48, and being configured in the base station: during with 3 layers of emission, the Resource Block quantity of distributing to subscriber equipment surpasses threshold value, and B-I handles by processing mode.Definite process with the transmission block size of 3 layers of emission is as follows: the base station is checked through the coded word of this subscriber equipment with 3 layers of emission, and the Resource Block quantity of distributing to subscriber equipment has surpassed 36, then the base station is by entrance (15,48) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, obtain numerical value 14688 bits, then according to the transmission block size of this numerical value " 14688 " as one deck, searching value corresponding in table 2 is 44064 bits, and the transmission block size that then obtains with 3 layers of emission is 44064 bits.Subsequently, after the base station is encoded into symbol with the Bit data of the coded word of 44064 bits, is distributed in 3 layers and goes up emission.
This shows, can in the LTE-Advanced mobile communication system, determine transmission block size, thereby obtain the higher system capacity with 3 layers of emission according to scheme provided by the invention, and compatible fully with existing system.
Instantiation two
In this example, the coded word of a certain subscriber equipment need be with 4 layers of emission, and base station assigns is given the index I of the transmission block size of this subscriber equipment
TBS=26, distribute to the Resource Block quantity N of subscriber equipment
PRB=100, and being configured in the base station: during with 4 layers of emission, the Resource Block quantity of distributing to subscriber equipment surpasses threshold value, and D-I handles by processing mode.Definite process with the transmission block size of 4 layers of emission is as follows: the base station is checked through the coded word of this subscriber equipment with 4 layers of emission, and the Resource Block quantity of distributing to subscriber equipment has surpassed 27, then the base station is by entrance (26,100) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, obtain numerical value 75376 bits, then according to the transmission block size of this numerical value " 75376 " as one deck, searching value corresponding in table 4 is 301520 bits, and the transmission block size that then obtains with 4 layers of emission is 301520 bits.Subsequently, after the base station is encoded into symbol with the Bit data of the coded word of 301520 bits, is distributed in 4 layers and goes up emission.
This shows, can in the LTE-Advanced mobile communication system, determine transmission block size, thereby obtain the higher system capacity with 4 layers of emission according to scheme provided by the invention, and compatible fully with existing system.
Instantiation three
In this example, the coded word of a certain subscriber equipment need be with 4 layers of emission, and base station assigns is given the index I of the transmission block size of this subscriber equipment
TBS=9, distribute to the Resource Block quantity N of subscriber equipment
PRB=32, and being configured in the base station: during with 4 layers of emission, the Resource Block quantity of distributing to subscriber equipment surpasses threshold value, and D-II handles by processing mode.Definite process with the transmission block size of 4 layers of emission is as follows: the base station is checked through the coded word of this subscriber equipment with 4 layers of emission, and the Resource Block quantity of distributing to subscriber equipment has surpassed 27, then the base station is by entrance (9,32) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, obtain numerical value 5160 bits, then this numerical value " 5160 " be multiply by 4, the transmission block size that obtains with 4 layers of emission is 20640 bits.Subsequently, after the base station is encoded into symbol with the Bit data of the coded word of 20640 bits, is distributed in 4 layers and goes up emission.
This shows, can in the LTE-Advanced mobile communication system, determine transmission block size, thereby obtain the higher system capacity with 4 layers of emission according to scheme provided by the invention, and compatible fully with existing system.
Instantiation four
In this example, the coded word of a certain subscriber equipment need be with 3 layers of emission, and base station assigns is given the index I of the transmission block size of this subscriber equipment
TBS=25, distribute to the Resource Block quantity N of subscriber equipment
PRB=5, and being configured in the base station: during with 3 layers of emission, the Resource Block quantity of distributing to subscriber equipment does not surpass threshold value, and A-III handles by processing mode.Definite process with the transmission block size of 3 layers of emission is as follows: the base station is checked through the coded word of this subscriber equipment with 3 layers of emission, and the Resource Block quantity of distributing to subscriber equipment does not surpass 36, then the base station is by entrance (25,5) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, obtain numerical value 3112 bits, then by entrance (25,2 * 5) in the table 7.1.7.2.1-1 of 3GPP agreement TS36.213-920, search, obtain numerical value 6200 bits, logarithm value " 3112 " obtains 9312 with " 6200 " summation, and the transmission block size that then obtains with 3 layers of emission is 9312 bits.Subsequently, after the base station is encoded into symbol with the Bit data of the coded word of 9312 bits, is distributed in 3 layers and goes up emission.
This shows, can in the LTE-Advanced mobile communication system, determine transmission block size, thereby obtain the higher system capacity with 3 layers of emission according to scheme provided by the invention, and compatible fully with existing system.
More than describe operation principle of the present invention in detail, but the example of this visualization of just lifting for the ease of understanding should not be considered to be limitation of the scope of the invention.Equally, according to the description of technical scheme of the present invention and preferred embodiment thereof, can make various possible being equal to and change or replacement, and all these changes or replacement all should belong to the protection range of claim of the present invention.
Claims (10)
1. the method for a definite transmission block size is characterized in that, when launching with 3 layers or 4 layers, this method comprises:
Judge whether the Resource Block quantity of distributing to subscriber equipment surpasses threshold value,
If do not surpass, then will be according to I
TBSWith N
PRBThe numerical value determined of corresponding relation directly as transmission block size with 3 layers or 4 layers emission;
If surpass, to according to I
TBSWith N
PRBThe numerical value determined of corresponding relation be converted to transmission block size with 3 layers or 4 layers emission;
Wherein, I
TBSFor base station assigns is given the index of the transmission block size of subscriber equipment, N
PRBGive the Resource Block quantity of subscriber equipment for base station assigns.
2. method according to claim 1 is characterized in that, with 3 layers of when emission, described will be according to I
TBSWith N
PRBThe numerical value determined of corresponding relation directly as transmission block size with 3 layers of emission, be specially:
By entrance (I
TBS, 3N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains as transmission block size with 3 layers of emission; Perhaps,
By entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, the numerical value that obtains be multiply by 3 as the transmission block size with 3 layers of emission; Perhaps,
By entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains with by entrance (I
TBS, 2N
PRB) at I
TBSWith N
PRBCorresponding relation in search the numerical value sum that obtains as transmission block size with 3 layers of emission.
3. method according to claim 1 is characterized in that, and is with 3 layers of when emission, described to according to I
TBSWith N
PRBThe numerical value determined of corresponding relation be converted to transmission block size with 3 layers of emission, be specially:
Earlier by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains transmission block size, determine transmission block size according to the transmission block size of one deck and the corresponding relation of three layers transmission block size then with 3 layers of emission as one deck; Perhaps,
By entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, the numerical value that obtains be multiply by 3 as the transmission block size with 3 layers of emission; Perhaps,
By entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains and this numerical value in the corresponding relation of the transmission block size of one deck and two layers transmission block size the corresponding big or small sum of two layers transmission block as transmission block size with 3 layers of emission.
4. method according to claim 1 is characterized in that, with 4 layers of when emission, described will be according to I
TBSWith N
PRBThe numerical value determined of corresponding relation directly as transmission block size with 4 layers of emission, be specially:
By entrance (I
TBS, 4N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains as transmission block size with 4 layers of emission; Perhaps,
By entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, the numerical value that obtains be multiply by 4 as the transmission block size with 4 layers of emission; Perhaps,
By entrance (I
TBS, 2N
PRB) at I
TBSWith N
PRBCorresponding relation in search, the numerical value that obtains be multiply by 2 as the transmission block size with 4 layers of emission; Perhaps,
By entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains with by entrance (I
TBS, 3N
PRB) at I
TBSWith N
PRBCorresponding relation in search the numerical value sum that obtains as transmission block size with 4 layers of emission.
5. method according to claim 1 is characterized in that, and is with 4 layers of when emission, described to according to I
TBSWith N
PRBThe numerical value determined of corresponding relation be converted to transmission block size with 4 layers of emission, be specially:
Earlier by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains transmission block size, determine transmission block size according to the transmission block size of one deck and the corresponding relation of four layers transmission block size then with 4 layers of emission as one deck; Perhaps,
By entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, the numerical value that obtains be multiply by 4 as the transmission block size with 4 layers of emission; Perhaps,
By entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, with the numerical value that obtains and this numerical value in the corresponding relation of the transmission block size of one deck and two layers transmission block size the corresponding big or small sum of three layers transmission block as transmission block size with 4 layers of emission; Perhaps,
Earlier by entrance (I
TBS, N
PRB) at I
TBSWith N
PRBCorresponding relation in search, obtain a numerical value, search the transmission block size of this numerical value corresponding bilayer in the corresponding relation of the transmission block of one deck size and two layers transmission block size then, the transmission block size that this is double-deck multiply by 2 as the transmission block size with 4 layers of emission.
6. according to the arbitrary described method of claim 1 to 5, it is characterized in that this method further comprises: after the Bit data of the coded word of described transmission block size is encoded into symbol, on each layer, launch according to the distributed number of layer.
7. according to the arbitrary described method of claim 1 to 5, it is characterized in that described threshold value is 36 during with 3 layers of emission, described threshold value is 27 during with 4 layers of emission.
8. the device of a definite transmission block size is characterized in that, determines the transmission block size when this device is used for 3 layers or 4 layers emission, comprising:
Judging unit is used for the base station and judges whether the Resource Block quantity of distributing to subscriber equipment surpasses threshold value, and judged result is offered determining unit;
Determining unit is used for handling according to the judged result of judging unit, does not surpass threshold value if distribute to the Resource Block quantity of subscriber equipment, will be according to I
TBSWith N
PRBThe numerical value determined of corresponding relation directly as transmission block size, if surpass threshold value, to according to I with 3 layers or 4 layers emission
TBSWith N
PRBThe numerical value determined of corresponding relation be converted to transmission block size with 3 layers or 4 layers emission.
9. device according to claim 8 is characterized in that, described determining unit comprises four determination modules:
The judged result of judging unit is that the coded word of subscriber equipment surpasses threshold value with 3 layers of emission and the Resource Block quantity of distributing to this subscriber equipment, and first determination module is used for the wherein a kind of transmission block size of determining this coded word with 3 layers of emission according to three kinds of processing modes;
The judged result of judging unit is that the coded word of subscriber equipment surpasses threshold value with 3 layers of emission and the Resource Block quantity of distributing to this subscriber equipment, and second determination module is used for the wherein a kind of transmission block size of determining this coded word with 3 layers of emission according to other three kinds of processing modes;
The judged result of judging unit is that the coded word of subscriber equipment surpasses threshold value with 4 layers of emission and the Resource Block quantity of distributing to this subscriber equipment, and the 3rd determination module is used for the wherein a kind of transmission block size of determining this coded word with 4 layers of emission according to four kinds of processing modes;
The judged result of judging unit is that the coded word of subscriber equipment surpasses threshold value with 4 layers of emission and the Resource Block quantity of distributing to this subscriber equipment, and the 4th determination module is used for the wherein a kind of transmission block size of determining this coded word with 4 layers of emission according to other four kinds of processing modes.
10. according to Claim 8 or 9 described devices, it is characterized in that described device further comprises: transmitter unit, after being used for Bit data with the coded word of described transmission block size and being encoded into symbol, on each layer, launch according to the distributed number of layer.
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| CN102448122A (en) * | 2011-12-30 | 2012-05-09 | 中兴通讯股份有限公司 | Method and base station for confirming size of transmission block in sub-frame |
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| US9496994B2 (en) | 2011-12-30 | 2016-11-15 | Zte Corporation | Method and base station for determining size of transmission blocks in subframe |
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| US10771206B2 (en) | 2015-01-30 | 2020-09-08 | Nec Corporation | Method and apparatus for performing fractional subframe transmission |
| US9888497B2 (en) | 2015-01-30 | 2018-02-06 | Nec Corporation | Method and apparatus for performing fractional subframe transmission |
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| US11159285B2 (en) | 2015-01-30 | 2021-10-26 | Nec Corporation | Method and apparatus for performing fractional subframe transmission |
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| CN110708141A (en) * | 2015-06-30 | 2020-01-17 | 展讯通信（上海）有限公司 | Data transmission method and device and micro base station |
| CN110708141B (en) * | 2015-06-30 | 2021-11-02 | 展讯通信（上海）有限公司 | Data transmission method and device and micro base station |
| CN108353285A (en) * | 2015-10-16 | 2018-07-31 | 华为技术有限公司 | A kind of method user equipment of determining transport block size and base station |
| CN109150370A (en) * | 2017-06-13 | 2019-01-04 | 维沃移动通信有限公司 | A kind of the determination method and communication equipment of transport block size |
| CN109150370B (en) * | 2017-06-13 | 2021-07-16 | 维沃移动通信有限公司 | Method for determining size of transmission block and communication equipment |
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