WO2017133536A1 - Data transmission processing method and device - Google Patents

Abstract

A data transmission processing method and device. The data transmission processing method is applicable to a base station, and comprises: receiving a first type of control signaling responded from a terminal; transmitting, according to the received first type of control signaling and to the terminal, a third type of control signaling and new data; receiving a second type of control signaling responded from the terminal; and if the second type of control signaling indicates an error in received data, retransmitting, to the terminal, retransmitted data corresponding to the new data.

Description

Data transmission processing method and device Technical field

The present application relates to, but is not limited to, the field of mobile wireless communications, and in particular, to a method and apparatus for data transmission processing.

Background technique

In mobile communication systems, adaptive coded modulation techniques are often used to combat fading of wireless channels, such as channel fading due to multipath transmission, Doppler shift, and inter-cell interference. The adaptive code modulation technology can adaptively adjust the transmit power, code length and modulation order of the current transmitter according to the current channel quality state, so that the communication system can use the most efficient code modulation mode and transmit power, which is a kind of Link adaptive communication technology.

For example, in the LTE (Long Term Evolution) mobile communication system, when the base station transmits data to a mobile user or a user equipment (UE), the terminal performs demodulation and decoding after receiving the data, and feeds back control signaling. For example, an ACK/NACK (Acknowledgement/Negative Acknowledgement) message is used to indicate whether the base station needs to retransmit data. The base station continuously sends a reference signal to the terminal, so that the terminal can detect the current channel quality, and feed back corresponding downlink physical CSI (Channel State Information), CQI (Channel quality indication), and PMI (Pre-coding Matrix). Indicator, precoding matrix indication), RI (Rank Indicator). After detecting the physical CSI, the terminal may report the physical CSI to the base station through a PUCCH (Physical Uplink Control Channel) or a PUSCH (Physical Uplink Shared Channel).

The base station allocates resources (resource size, frequency domain location, modulation and coding scheme, spatial multiplexing layer, precoding matrix, etc.) to the terminal user according to the CSI reported by the terminal, and allocates N _PRB PRBs (Physical Resource Blocks, physics). Data block) transmits data and DCI (Downlink Control Information). The downlink control information carries two pieces of information: a coded modulation index number I _MCS and a resource number N _PRB . According to the I _MCS , the terminal can demodulate the data according to the modulation order, and according to the information of I _MCS and N _PRB , the TBS information of the currently received data can be obtained through the TBS (Tranport Block Size) table. Perform decoding. For example, in the LTE 36.213 protocol, when the number of spatial multiplexing layers is equal to 1, the TBS can be given by the elements in Table 1 (I _TBS , N _PRB ), where I _TBS is the transport block size index number.

Table 1 TBS with a system bandwidth of 10 PRBs in a layer of spatial multiplexing

For multi-layer spatial multiplexing, the TBS is obtained from the corresponding table according to N _PRB . Taking two-layer spatial multiplexing as an example, for 1 ≤ N _PRB ≤ 55, TBS is given by a layer of spatially multiplexed TBS table elements (I _TBS , 2 · N _PRB ); for 56 ≤ N _PRB ≤ 110, First, obtain a layer of spatially multiplexed TBS table elements (I _TBS , N _PRB ) as a layer of TBS (TBS_L1), and then check the mapping table of the layer 2 to layer 2 TBS under the two-layer spatial multiplexing condition (ie Table 2), two layers of TBS (TBS_L2) are obtained. For higher-level spatial multiplexing, the LTE protocol 36.213 defines a TBS mapping table from one layer to a higher layer, and the TBS acquisition method is similar to the two layers, and will not be described here.

Table 2 Mapping table of TBS to Layer 2 to Layer 2 under two-layer spatial multiplexing conditions

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

After the modulation mode is given by I _MCS , the actual code rates of the elements in the same I _TBS row in Table 1 correspond together but are not strictly equal to one target code rate. Table 1 is designed according to the target code rate, and in Table 2, the two layers of TBS and one layer of TBS have the same target bit rate, and the higher layer TBS design also follows such correspondence. For a given TBS, the actual code rate is related to the number of REs (Resource Elements) that one RB (Resource Block) can use to carry data in the downlink transmission. At present, the number of REs available for one RB in Table 1 is assumed to be 120 except for the last level, that is, I _TBS =26 is assumed to be 136. 120 are considered to be two OFDM (Orthogonal Frequency Division Multiplexing) symbols for control and CRS (Cell-specific Reference Signal) for two antenna ports, and 136 are considered for one. The OFDM symbols are used to control and the CRS of the four antenna ports. However, for a low-latency system, each TTI (Transmission Time Interval) in the system only occupies a small number of OFDM symbols, such as 2, 3 or 4 OFDM symbols, then the TBS table design described above does not meet the requirements. Because the TBS calculated by this TBS table is much larger, resulting in channel coding failure, the target actual channel coding rate may be relatively high, so it is necessary to redesign the TBS table to meet the short TTI communication requirements.

In addition, in the LTE mobile communication system, the downlink communication uses adaptive asynchronous HARQ (Hybrid Automatic Retransmission reQuest) transmission, which can change the modulation order of the retransmitted data, and adopt non-adaptive synchronous HARQ transmission in the uplink. The transmission format of the retransmitted data cannot be changed. In the low latency communication, the target BLER (Block Error Rate) of the data to be retransmitted can reach 10 ^-6 or lower, and the data needs to be retransmitted. More resources are needed and lower bit rate or lower order modulation, but current systems cannot meet this requirement, so it is necessary to redesign the HARQ process to meet low latency and high reliability communication requirements. In low-latency communication, in order to reduce the delay, the retransmission is avoided as much as possible, that is, most of the first-pass data needs to be successfully decoded. For example, the target error block rate of the first-pass data is very low, that is, it is necessary to design a type. The CSI with lower target bit error rate is fed back to the base station, so that the first transmission data can achieve more reliable transmission, so as to reduce the probability of retransmission.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

Embodiments of the present invention provide a data transmission processing method and apparatus.

An embodiment of the present invention provides a data transmission processing method, which is applied to a base station, and includes at least:

Receiving the first type of control signaling fed back by the terminal;

Transmitting a third type of control signaling to the terminal according to the received first type of control signaling And the first pass data;

Receiving a second type of control signaling fed back by the terminal;

And if the second type of control signaling indicates that the data is received incorrectly, the retransmission data corresponding to the first transmission data is sent to the terminal.

In an exemplary embodiment, the transport block size TBS' of the first pass data is an element value in a preset TBS' table, the preset TBS' table is a two-dimensional table, and the row index is a TBS index I _TBS The column index is the number of resource blocks N _PRB , and the combination of a pair of I _TBS and N _PRB corresponds to one TBS '; wherein, the set of the row index I _{TBS is} a set of 0 to Q1, and Q1 is an integer greater than or equal to 4, the column The set of index N _{PRBs is} a subset of the set of natural numbers.

In an exemplary embodiment, the preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes at least one of the following rules:

Rule one: determining the preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), wherein TBS' is an element of the combination in which the index entry in the preset TBS' table is a combination of I _TBS and N _PRB Value, TBS is an element value in which the index entry in the first TBS table is a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

Rule 2: In the preset TBS' table, when the row index I _TBS and the column index N _PRB satisfy I _TBS <Function 2 (N _PRB ), the TBS 'value is null; wherein Function 2 (N _PRB ) is N _PRB a second predetermined function of the independent variable;

Rule 3: If the first transmission data is Turbo coded, all the TBS' values in the preset TBS' table are all the interleave lengths supported by the quadratic permutation polynomial (QPP) interleaver in Turbo coding. And a subset of the set of at least 2 interleaving lengths;

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

In an exemplary embodiment, the first predetermined function Function1 (TBS) is [(TBS+N _CRC ) /S]-N _CRC +E, where [] represents a rounding operation; the rounding operation includes the following Either rounding, rounding down, rounding up; S is a real number greater than 1 and less than 14, N _CRC is the length of the cyclic redundancy check sequence, and E is an integer from -16 to 16.

In an exemplary embodiment, the second predetermined function Function 2 (N _PRB ) is N1-N _PRB ; wherein N1 is an integer greater than one.

In an exemplary embodiment, the N1 is any of the following values: 8, 9, 10, 11, 12.

In an exemplary embodiment, the mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn of each integer from 1 to 13, Function 2 (N _PRB ) takes a value of 16 in order. , 11, 8, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.

In an exemplary embodiment, in the rule 3, if the first transmission data adopts Turbo coding, the TBS' value in the preset TBS' table is larger than the maximum interleave length supported in the QPP interleaver in Turbo coding. The constructed set is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.

In an exemplary embodiment, the first type of control signaling is channel state indication (CSI) information, which corresponds to a target error block rate (BLER) equal to A0, where A0 is greater than or equal to 10 ^-4 , less than or A real number equal to 10 ^-1 .

In an exemplary embodiment, the channel state indication information includes at least one of the following information: a channel quality indicator (CQI), a channel rank indication (RI), and a channel precoding matrix indication (PMI).

In an exemplary embodiment, the second type of control signaling is used at least to determine a modulation order, a number of resource blocks, of the retransmitted data.

In an exemplary embodiment, a target error block rate (BLER) of the retransmission data corresponding to the second type of control signaling is equal to A1, where A1 is greater than or equal to 10 ^-8 and less than or equal to 10 ^-3 . Real number.

In an exemplary embodiment, the second type of control signaling includes at least one of the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ], where Z is An integer greater than or equal to 2.

In an exemplary embodiment, among the Z state information sets, ACK indicates that the terminal is correctly received, and NACK ₀ , ..., NACK _(Z-2) indicates terminal error reception.

In an exemplary embodiment, before the transmitting the retransmission data corresponding to the first transmission data to the terminal, the data transmission processing method may further include:

The base station determines at least one of the following: at least one of the received NACK _i : a modulation order of the retransmitted data, and a number of resource blocks, where i is an integer from 0 to Z-2.

In an exemplary embodiment, the Z is any of the following values: 4, 8, 16, 32.

In an exemplary embodiment, the third type of control signaling includes at least: downlink control information (DCI); the DCI includes at least: a modulation and coding policy (MCS) index, a TBS index, a number of resource blocks, and a resource block location.

The embodiment of the invention further provides a data transmission processing method, which is applied to a terminal, and includes:

Transmitting a first type of control signaling to a base station;

Receiving a third type of control signaling and first transmission data sent by the base station;

Transmitting a second type of control signaling to the base station;

If the first transmission data is received incorrectly, retransmission data corresponding to the first transmission data is received.

In an exemplary embodiment, the TBS index I _TBS and the resource block number N _{PRB are} determined by the third type of control signaling; the transport block size TBS′ of the first transmission data is obtained according to the preset TBS′ table, the preset TBS The table is a two-dimensional table, the row index is the TBS index I _TBS , the column index is the number of resource blocks N _PRB , and the combination of a pair of I _TBS and N _PRB corresponds to one TBS '; wherein the set of row indices I _TBS is 0 to A set of Q1, Q1 is an integer greater than or equal to 4, and the set of column indices N _{PRB is} a subset of the set of natural numbers.

In an exemplary embodiment, the preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes at least one of the following rules:

Rule 1: Determine a preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), where TBS' is an element value of a combination of I _TBS and N _PRB in the preset TBS' table, and TBS is The index entry in the first TBS table is an element value of a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

Rule 2: In the preset TBS' table, when I _TBS <Function2(N _PRB ) is satisfied, the TBS' value is null; wherein Function 2 (N _PRB ) is a second predetermined function with N _PRB as an independent variable;

Rule 3: If the first transmission data is Turbo coded, the set of all TBS' values in the preset TBS' table is the interleaving length supported by the quadratic permutation polynomial (QPP) interleaver in Turbo coding. a subset of the set of at least 2 interleaving lengths;

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

In an exemplary embodiment, the first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where [] represents a rounding operation; the rounding operation includes the following Either rounding, rounding down, rounding up; S is a real number greater than 1 and less than 14, N _CRC is the length of the cyclic redundancy check sequence, and E is an integer from -16 to 16.

In an exemplary embodiment, the second predetermined function Function 2 (N _PRB ) is N1-N _PRB , and N1 is any one of the following values: 8, 9, 10, 11, 12; or, the second predetermined function Function 2 The mapping relationship between (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn every integer from 1 to 13, Function 2 (N _PRB ) takes values of 16, 11, 8, 6, 5, 4, 3, 3 2, 2, 1, 1, 1; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.

In an exemplary embodiment, in the rule 3, if the first transmission data is Turbo coded, the TBS' value in the preset TBS' table is larger than the maximum interleave length supported by the QPP interleaver in the Turbo code. The set is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.

In an exemplary embodiment, the first type of control signaling is channel state indication (CSI) information, which corresponds to a target error block rate (BLER) equal to A0, where A0 is greater than or equal to 10 ^-4 , less than or a real number equal to 10 ^-1 ; the channel state indication information includes at least one of the following information: CQI, channel RI, channel PMI.

In an exemplary embodiment, the second type of control signaling is used at least to determine a tone of retransmitted data. Order number, number of resource blocks.

In an exemplary embodiment, the target error block rate (BLER) of the retransmission data corresponding to the second type of control signaling is equal to A1, where A1 is a real number greater than or equal to 10 ^-8 and less than or equal to 10 ^-3 .

In an exemplary embodiment, the second type of control signaling includes at least one of the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ], where Z is An integer greater than or equal to 2.

In an exemplary embodiment, among the Z state information sets, ACK indicates that the terminal correctly receives, and NACK ₀ , . . . , NACK _(Z-2) indicates terminal error reception.

In an exemplary embodiment, the NACK _i information is used to indicate at least one of: a modulation order of retransmitting data, a number of resource blocks, where i is an integer from 0 to Z-2, and the Z is any one of the following Values: 4, 8, 16, 32.

In an exemplary embodiment, the third type of control signaling includes at least: DCI; the DCI includes at least: a modulation and coding policy (MCS) index, a TBS index, a number of resource blocks, and a resource block location.

The embodiment of the invention further provides a data transmission processing device, which is applied to a base station, and includes at least:

The first receiving module is configured to receive the first type of control signaling fed back by the terminal;

The first data transmission module is configured to send the third type of control signaling and the first transmission data to the terminal according to the received first type of control signaling;

The second receiving module is configured to receive the second type of control signaling fed back by the terminal;

The retransmission data sending module is configured to: if the second type of control signaling indicates that the data is received incorrectly, send retransmission data corresponding to the first transmission data to the terminal.

In an exemplary embodiment, the transport block size TBS' of the first transmission data sent by the first transmission data sending module is an element value in a preset TBS' table, and the preset TBS' table is a second a dimension table, the row index is a TBS index I _TBS , the column index is a resource block number N _PRB , and a combination of a pair of I _TBS and N _PRB corresponds to one TBS′; wherein the set of row indexes I _{TBS is} a set of 0 to Q1, Where Q1 is an integer greater than or equal to 4, and the set of column indices N _{PRB is} a subset of the set of natural numbers.

In an exemplary embodiment, the preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes at least one of the following rules:

Rule one: determining the preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), wherein TBS' is an element of the combination in which the index entry in the preset TBS' table is a combination of I _TBS and N _PRB Value, TBS is an element value in which the index entry in the first TBS table is a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

Rule 2: In the preset TBS' table, when the row index I _TBS and the column index N _PRB satisfy I _TBS <Function 2 (N _PRB ), the TBS 'value is null; wherein Function 2 (N _PRB ) is N _PRB a second predetermined function of the independent variable;

Rule 3: If the first transmission data is Turbo coded, all the TBS' values in the preset TBS' table are all the interleave lengths supported by the quadratic permutation polynomial (QPP) interleaver in Turbo coding. And a subset of the set of at least 2 interleaving lengths;

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

In an exemplary embodiment, the first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where [] represents a rounding operation; the rounding operation includes the following Either rounding, rounding down, rounding up; S is a real number greater than 1 and less than 14, N _CRC is the length of the cyclic redundancy check sequence, and E is an integer from -16 to 16.

In an exemplary embodiment, the second predetermined function Function 2 (N _PRB ) is N1-N _PRB , and N1 is any one of the following values: 8, 9, 10, 11, 12; or, the second predetermined function Function 2 The mapping relationship between (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn every integer from 1 to 13, Function 2 (N _PRB ) takes values of 16, 11, 8, 6, 5, 4, 3, 3 2, 2, 1, 1, 1; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.

In an exemplary embodiment, in the rule 3, if the first transmission data adopts Turbo coding, the TBS' value in the preset TBS' table is larger than the maximum interleave length supported in the QPP interleaver in Turbo coding. The constructed set is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.

In an exemplary embodiment, the first type of control signaling received by the first receiving module is channel state indication (CSI) information, where a corresponding target error block rate (BLER) is equal to A0, where A0 is greater than Or a real number equal to 10 ^-4 and less than or equal to 10 ^-1 ; the channel state indication information includes at least one of the following information: CQI, channel RI, channel PMI.

In an exemplary embodiment, the second type of control signaling received by the second receiving module is used to determine at least a modulation order and a number of resource blocks of the retransmitted data.

In an exemplary embodiment, the target error block rate (BLER) of the retransmission data corresponding to the second type of control signaling received by the second receiving module is equal to A1, where A1 is greater than or equal to 10 ^{- 8} , a real number less than or equal to 10 ^-3 .

In an exemplary embodiment, the second type of control signaling received by the second receiving module includes at least the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ] A state information in which Z is an integer greater than or equal to two.

In an exemplary embodiment, among the Z state information sets, ACK indicates that the terminal correctly receives, and NACK ₀ , . . . , NACK _(Z-2) indicates terminal error reception.

In an exemplary embodiment, the NACK _i information is used to indicate at least one of: a modulation order of retransmitting data, a number of resource blocks, where i is an integer from 0 to Z-2, and the Z is the following Any value: 4, 8, 16, 32.

In an exemplary embodiment, the third type of control signaling includes at least: DCI; the DCI includes at least: a modulation and coding policy (MCS) index, a TBS index, a number of resource blocks, and a resource block location.

The embodiment of the invention further provides a data transmission processing device, which is applied to the terminal, and includes at least:

The first sending module is configured to send the first type of control signaling to the base station;

The first data receiving module is configured to receive the third type of control signaling and the first transmission data sent by the base station;

a second sending module, configured to send a second type of control signaling to the base station;

The retransmission data receiving module is configured to receive retransmission data corresponding to the first transmission data if the first transmission data is received incorrectly.

In an exemplary embodiment, the TBS index I _TBS and the resource block number N _{PRB are} determined by the third type of control signaling; and the transmission of the first transmission data received by the first transmission data receiving module is obtained according to the preset TBS' table. The block size TBS'; the preset TBS' table is a two-dimensional table, the row index is the TBS index I _TBS , the column index is the number of resource blocks N _PRB , and the combination of a pair of I _TBS and N _PRB corresponds to one TBS '; The set of row index I _{TBS is} a set of 0 to Q1, where Q1 is an integer greater than or equal to 4, and the set of column index N _{PRB is} a subset of the set of natural numbers.

In an exemplary embodiment, the preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes at least one of the following rules:

Rule 1: Determine a preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), where TBS' is an element value of a combination of I _TBS and N _PRB in the preset TBS' table, and TBS is The index entry in the first TBS table is an element value of a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

Rule 2: In the preset TBS' table, when I _TBS <Function2(N _PRB ) is satisfied, the TBS' value is null; wherein Function 2 (N _PRB ) is a second predetermined function with N _PRB as an independent variable;

Rule 3: If the first transmission data is Turbo coded, the preset TBS' table, the set of all TBS' values is the interleaving length and at least 2 supported in the quadratic permutation polynomial (QPP) interleaver in Turbo coding. a subset of the set of interleaved lengths;

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

In an exemplary embodiment, the first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where [] represents a rounding operation; the rounding operation includes the following Either rounding, rounding down, rounding up; S is a real number greater than 1 and less than 14, N _CRC is the length of the cyclic redundancy check sequence, and E is an integer from -16 to 16.

In an exemplary embodiment, the second predetermined function Function 2 (N _PRB ) is N1-N _PRB , and N1 is any one of the following values: 8, 9, 10, 11, 12; or, the second predetermined function Function 2 The mapping relationship between (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn every integer from 1 to 13, Function 2 (N _PRB ) takes values of 16, 11, 8, 6, 5, 4, 3, 3 2, 2, 1, 1, 1; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.

In an exemplary embodiment, in the rule 3, if the first transmission data is Turbo coded, the TBS' value in the preset TBS' table is larger than the maximum interleave length supported by the QPP interleaver in the Turbo code. The set is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.

In an exemplary embodiment, the first type of control signaling sent by the first sending module is channel state indication (CSI) information, where a corresponding target error block rate (BLER) is equal to A0, where A0 is a real number greater than or equal to 10 ^-4 and less than or equal to 10 ^-1 ; the channel state indication information includes at least one of the following information: CQI, channel RI, channel PMI.

In an exemplary embodiment, the second type of control signaling sent by the second sending module is used to determine at least a modulation order and a number of resource blocks of the retransmitted data.

In an exemplary embodiment, the target error block rate (BLER) of the retransmission data corresponding to the second type of control signaling sent by the second sending module is equal to A1, where A1 is greater than or equal to 10 ^{- 8} , a real number less than or equal to 10 ^-3 .

In an exemplary embodiment, the second type of control signaling sent by the second sending module includes at least the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ] A state information in which Z is an integer greater than or equal to two.

In an exemplary embodiment, among the Z state information sets, ACK indicates that the terminal correctly receives, and NACK ₀ , . . . , NACK _(Z-2) indicates terminal error reception.

In an exemplary embodiment, the NACK _i information is used to indicate at least one of: a modulation order of retransmitting data, a number of resource blocks, where i is an integer from 0 to Z-2, and the Z is any one of the following Values: 4, 8, 16, 32.

In an exemplary embodiment, the third type of control signaling includes at least: DCI; the DCI includes at least: a modulation and coding policy (MCS) index, a TBS index, a number of resource blocks, and a resource block location.

In addition, an embodiment of the present invention further provides a computer readable storage medium, where a computer can be stored. Executing instructions that implement the above-described data transfer processing method applied to the base station when executed by the processor.

In addition, an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, which are implemented by the processor to implement the above data transmission processing method applied to the terminal.

Embodiments of the present invention provide a data transmission processing method and apparatus respectively applied to a terminal or a base station, wherein an exemplary embodiment provides a new TBS design scheme to meet channel coding requirements in a low latency communication system; In an exemplary embodiment, the first-pass data performance with a lower target error block rate can be obtained by the first type of control signaling, and the data can be retransmitted as much as possible. In another exemplary embodiment, when an error is received, the When retransmission is not required, the retransmission data performance with a lower target error block rate can be obtained by the second type of control signaling.

Other features and advantages of the present application will be set forth in the description which follows. The objectives and other advantages of the present invention can be realized and obtained by the structure of the invention.

BRIEF abstract

The drawings are used to provide a further understanding of the technical solutions of the present application, and constitute a part of the specification, which is used together with the embodiments of the present application to explain the technical solutions of the present application, and does not constitute a limitation of the technical solutions of the present application.

1 is a schematic flow chart of a data transmission processing method according to Embodiment 1 of the present invention;

2 is a schematic flowchart of a data transmission processing method according to Embodiment 2 of the present invention;

3 is a schematic diagram of a data transmission processing apparatus according to Embodiment 3 of the present invention;

4 is a schematic diagram of a data transmission processing apparatus according to Embodiment 4 of the present invention.

Embodiments of the invention

The technical solutions of the present application will be described in more detail below with reference to the accompanying drawings and embodiments.

It should be noted that, if not conflicting, the embodiments of the present invention and the various features in the embodiments may be combined with each other, and are all within the protection scope of the present application. In addition, although the logic is shown in the flowchart The order is set, but in some cases the steps shown or described may be performed in an order different than that herein.

Embodiment 1 A data transmission processing method is applied to a base station, as shown in FIG. 1, and includes the following steps:

Step S101: Receive first type control signaling fed back by the terminal.

Step S102: Send, according to the received first type control signaling, a third type of control signaling and first transmission data to the terminal.

Step S103, receiving a second type of control signaling fed back by the terminal;

Step S104: If the second type of control signaling indicates that the data is received incorrectly, send retransmission data corresponding to the first transmission data to the terminal.

In an exemplary embodiment of the present embodiment, before the receiving the first type of control signaling that is sent by the terminal, the data transmission processing method further includes: Step S100, sending a reference signal to the terminal, where the reference signal is used to indicate the location The terminal performs channel measurement to obtain the first type of control signaling.

In an exemplary embodiment of the present embodiment, the transport block size TBS' of the first transmission data is an element value in a preset TBS' table, and the preset TBS' table is a two-dimensional table, and the row index For the TBS index I _TBS , the column index is the number of resource blocks N _PRB , and the combination of a pair of I _TBS and N _PRB corresponds to one TBS′; wherein the set of row indices I _{TBS is} a set of 0 to Q1, and Q1 is greater than or equal to An integer of 4, the set of column indices N _{PRB is} a subset of the set of natural numbers, such as a set of all integers from 1 to Q2, or a set of all odd numbers, or a set of all even numbers, Q2 is equal to 150.

In the exemplary embodiment, the preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes at least one of the following rules:

Rule one: determining the preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), wherein TBS' is an element of the combination in which the index entry in the preset TBS' table is a combination of I _TBS and N _PRB Value, TBS is an element value in which the index entry in the first TBS table is a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

The first TBS table may be, but is not limited to, an existing {I _TBS , N _PRB } and TBS mapping relationship table, such as Table 1 above. This allows the designed system physical layer channel coding TBS length to be compatible with each other, facilitating system design and physical layer hardware design.

Rule 2: In the preset TBS' table, when the row index I _TBS and the column index N _PRB satisfy I _TBS <Function 2 (N _PRB ), the TBS 'value is null; wherein Function 2 (N _PRB ) is N _PRB a second predetermined function of the independent variable;

In the rule 2, in the system design process, if the TTI only contains a small number of OFDM symbols, the TTI only contains a small number of REs, and if the allocated RBs are small, the corresponding MCS (Modulation and Coding Scheme, modulation coding) The strategy is coded. The number of TBSs is small enough to constitute the number of input bits for channel coding (Turbo coding), so TBS' needs to be set to null at this time.

Rule 3: If the first transmission data is Turbo coded, all the TBS' values in the preset TBS' table are all the interleave lengths supported by the quadratic permutation polynomial (QPP) interleaver in Turbo coding. And a subset of the set of at least 2 interleaving lengths;

In the third rule, TBS' is required to be equal to the interleave length of the QPP interleaver in Turbo coding, that is, equal to the number of input bits of Turbo coding, which is advantageous for Turbo coding, and no need to fill bits internally in Turbo coding. The at least two interleave lengths are any two interleave lengths of all interlace lengths supported by the QPP interleaver.

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, N _PRE is the number of resource particles; in the OFDM system, the resource particle refers to the subcarrier that can carry data, the number of resource particles N _PRE is equal to R times the number of resource blocks N _PRB , where R is the number of resource particles in each resource block, and R is an integer from 6 to 160; in a single carrier (SC, Single Carrier) system, resource particles are A constellation modulation symbol that carries data.

In the fourth rule, the code rate of the limited channel coding cannot exceed a certain threshold, which is beneficial to ensure the transmission performance of the channel coding. If the code rate is too high, the performance is degraded and an error floor phenomenon occurs.

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles. In the OFDM system, the resource particle refers to the subcarrier that can carry data, and the number of resource particles is N. _PRE is equal to R times the number of resource blocks N _PRB , where R is the number of resource particles in each resource block, R is an integer from 6 to 160; in a single-carrier SC system, resource particles are constellation modulations that can carry data symbol.

In the rule 5, the limitation of the TBS' value in the preset TBS' table supports a certain lower code rate to ensure communication reliability; especially in an ultra-reliable system, a relatively low code rate is required. Supports high reliability of the transport block, increases system robustness, and if low latency is required, the low bit rate can greatly improve the correct probability of the first pass data and reduce the retransmission data, thereby greatly reducing the communication delay. .

The above rules may be used singly or in combination.

In an alternative implementation manner of this exemplary embodiment, in the rule 1, the first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where , [] represents a rounding operation; the rounding operation includes any one of the following: rounding rounding, rounding down, rounding up; S is a real number greater than 1, E is an integer from -16 to 16; N _CRC Is the length of the cyclic redundancy check sequence.

Wherein, the S may be, but is not limited to, a real number greater than 1 and less than 14.

In an alternative embodiment of the present exemplary embodiment, the second predetermined function Function 2 (N _PRB ) is N1-N _PRB ; wherein N1 is an integer greater than one. The typical value of the N1 may be, but is not limited to, any one of the following: 8, 9, 10, 11, and 12.

In an alternative implementation manner of the exemplary embodiment, the mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn each integer of 1 to 13, Function 2 ( N _PRB ) takes the values of 16, 11 , 8, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1 in sequence; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0. For example, N _PRB = 1 then Function 2 (N _PRB ) = 16, N _PRB = 2, and then Function 2 (N _PRB ) = 11, and so on.

In an alternative implementation manner of the exemplary embodiment, in the rule three, if the first transmission data is Turbo coded, the preset TBS' table is larger than that supported by the QPP interleaver in Turbo coding. The set of TBS' values of the maximum interleaving length is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.

In an exemplary implementation manner of this embodiment, the first type of control signaling is channel state indication (CSI) information, where a corresponding target error block rate (BLER) is equal to A0, where A0 is greater than or equal to 10. ^-4 , a real number less than or equal to 10 ^-1 . Wherein, the typical value of the A0 can be, but is not limited to, any one of the following: 10 ^-1 , 10 ^-2 , 10 ^-3 , 10 ^-4 .

In an alternative implementation manner of this exemplary embodiment, the channel state indication information includes at least one of the following information: CQI, channel RI, channel PMI.

In an exemplary implementation manner of this embodiment, the second type of control signaling is used to determine at least a modulation order and a resource block number of the retransmitted data.

In an alternative implementation manner of the exemplary embodiment, the target error block rate (BLER) of the retransmission data corresponding to the second type of control signaling is equal to A1, where A1 is greater than or equal to 10 ^-8. , a real number less than or equal to 10 ^-3 .

Wherein, the typical value of the A1 may be, but not limited to, any one of the following: 10 ^-4 , 10 ^-5 , 10 ^-6 , 10 ^-7 , 10 ^-8 .

In an exemplary implementation manner of this embodiment, the second type of control signaling includes at least one of the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ] State information, Z is an integer greater than or equal to 2.

In an alternative implementation manner of the exemplary embodiment, among the Z state information sets, ACK indicates that the terminal correctly receives, and NACK ₀ , . . . , NACK _(Z-2) indicates terminal error reception.

In an alternative implementation manner of the exemplary embodiment, before the sending the retransmission data corresponding to the first transmission data to the terminal, the data transmission processing method may further include:

The base station determines at least one of the following: at least one of the received NACK _i : a modulation order of the retransmitted data, and a number of resource blocks, where i is an integer from 0 to Z-2.

Wherein, the typical value of Z may be, but is not limited to, any one of the following: 4, 8, 16, 32.

In an exemplary implementation manner of this embodiment, the third type of control signaling includes: at least downlink control information (DCI); the DCI includes at least: an MCS index, a TBS index, a resource block number, and a resource block location.

Embodiment 2 A data transmission processing method is applied to a terminal, as shown in FIG. 2, including:

Step S201, sending a first type of control signaling to the base station;

Step S202, receiving third type control signaling and first transmission data sent by the base station;

Step S203, sending a second type of control signaling to the base station;

Step S204: If the first transmission data is received incorrectly, receive retransmission data corresponding to the first transmission data.

In an exemplary embodiment of the present embodiment, before the step S201, the data transmission processing method further includes: Step S200: Receive a reference signal sent by the base station, perform channel measurement according to the reference signal, and obtain the first class. Control signaling.

In an exemplary implementation manner of this embodiment, the TBS index I _TBS and the resource block number N _{PRB are} determined by using the third type of control signaling; and the transport block size TBS' of the first transmission data is obtained according to the preset TBS' table, The preset TBS' table is a two-dimensional table, the row index is the TBS index I _TBS , the column index is the number of resource blocks N _PRB , and the combination of a pair of I _TBS and N _PRB corresponds to one TBS '; wherein, the row index I _TBS The set is a set of 0 to Q1, Q1 is an integer greater than or equal to 4, and the set of column indices N _{PRB is} a subset of a set of natural numbers, such as a set of all integers from 1 to Q2, or all odd components The set, or a set of all even numbers, Q2 is equal to 150.

In an alternative embodiment of the present exemplary embodiment, the preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes at least one of the following rules:

Rule 1: Determine a preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), where TBS' is an element value of a combination of I _TBS and N _PRB in the preset TBS' table, and TBS is The index entry in the first TBS table is an element value of a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

Rule 2: In the preset TBS' table, when I _TBS <Function2(N _PRB ) is satisfied, the TBS' value is null; wherein Function 2 (N _PRB ) is a second predetermined function with N _PRB as an independent variable;

Rule 3: If the first transmission data is Turbo coded, the preset TBS' table, the set of all TBS' values is the interleaving length and at least 2 supported in the quadratic permutation polynomial (QPP) interleaver in Turbo coding. a subset of the set of interleaved lengths;

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

The above rules may be used singly or in combination.

In an alternative implementation manner of this exemplary embodiment, in the rule 1, the first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where , [] represents a rounding operation; the rounding operation includes any one of the following: rounding rounding, rounding down, rounding up; N _CRC is the length of the cyclic redundancy check sequence; S is a real number greater than 1. . In the present embodiment, the S may be, but not limited to, a real number greater than 1 and less than 14, and E is an integer from 16 to 16.

In an alternative embodiment of the present exemplary embodiment, the second predetermined function Function 2 (N _PRB ) is N1-N _PRB ; N1 is an integer greater than one. In the present embodiment, the typical value of N1 described above may be, but is not limited to, any of the following values: 8, 9, 10, 11, and 12.

In an alternative implementation manner of the exemplary embodiment, the mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn each integer of 1 to 13, Function 2 ( N _PRB ) takes the values of 16, 11 , 8, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1 in sequence; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.

In an alternative implementation manner of the exemplary embodiment, in the rule three, if the first transmission data is Turbo coded, the preset TBS' table is larger than the maximum supported in the QPP interleaver in Turbo coding. The set of TBS' values of the interleaving length is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.

In an exemplary implementation manner of this embodiment, the first type of control signaling is channel state indication (CSI) information, where a corresponding target error block rate (BLER) is equal to A0, where A0 is greater than or equal to 10. ^-4 , a real number less than or equal to 10 ^-1 .

In an alternative implementation manner of this exemplary embodiment, the channel state indication information includes at least one of the following information: CQI, channel RI, channel PMI.

In an exemplary implementation manner of this embodiment, the second type of control signaling is used to determine at least a modulation order and a resource block number of the retransmitted data.

In an exemplary implementation manner of this embodiment, a target error block rate (BLER) of the retransmission data corresponding to the second type of control signaling is equal to A1, where A1 is greater than or equal to 10 ^-8 , less than or A real number equal to 10 ^-3 .

In an exemplary implementation manner of this embodiment, the second type of control signaling includes at least one of the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ] State information, Z is an integer greater than or equal to 2.

In an alternative implementation manner of the exemplary embodiment, in the Z state information sets, the ACK may indicate that the terminal correctly receives, and the NACK ₀ , . . . , NACK _(Z-2) may indicate that the terminal receives the error.

In an alternative implementation manner of this exemplary embodiment, the NACK _i information is used to indicate at least one of: a modulation order of retransmitting data, a number of resource blocks, where i is an integer from 0 to Z-2 Wherein, a typical value of Z can be, but is not limited to, any of the following values: 4, 8, 16, 32.

In an exemplary implementation manner of this embodiment, the third type of control signaling includes: at least downlink control information (DCI); the DCI includes at least: an MCS index, a TBS index, a resource block number, and a resource block location.

For further implementation details, refer to the first embodiment.

Embodiment 3 A data transmission processing apparatus is applied to a base station, as shown in FIG. 3, including:

The first receiving module 301 is configured to receive the first type of control signaling fed back by the terminal;

The first transmission data sending module 302 is configured to send the third type of control signaling and the first transmission data to the terminal according to the received first type of control signaling;

The second receiving module 303 is configured to receive the second type of control signaling fed back by the terminal;

The retransmission data sending module 304 is configured to: if the second type of control signaling indicates that the data is received incorrectly, send retransmission data corresponding to the first transmission data to the terminal.

In an exemplary embodiment of the present embodiment, the data transmission processing apparatus further includes: a reference signal sending module 300, configured to send a reference signal to the terminal, where the reference signal is used to indicate that the terminal performs The first type of control signaling is obtained by channel measurement.

In an exemplary embodiment of the present embodiment, the transport block size TBS' of the first transmission data sent by the first transmission data sending module 302 is an element value in a preset TBS' table, and the preset The TBS' table is a two-dimensional table, the row index is the TBS index I _TBS , the column index is the number of resource blocks N _PRB , and the combination of a pair of I _TBS and N _PRB corresponds to one TBS '; wherein the set of row indices I _TBS is 0 To the set of Q1, Q1 is an integer greater than or equal to 4, and the set of column indices N _{PRB is} a subset of the set of natural numbers.

In an alternative embodiment of the present exemplary embodiment, the preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes at least one of the following rules:

Rule one: determining the preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), wherein TBS' is an element of the combination in which the index entry in the preset TBS' table is a combination of I _TBS and N _PRB Value, TBS is an element value in which the index entry in the first TBS table is a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

Rule 2: In the preset TBS' table, when the row index I _TBS and the column index N _PRB satisfy I _TBS <Function 2 (N _PRB ), the TBS 'value is null; wherein Function 2 (N _PRB ) is N _PRB a second predetermined function of the independent variable;

Rule 3: If the first transmission data is Turbo coded, all the TBS' values in the preset TBS' table are all the interleave lengths supported by the quadratic permutation polynomial (QPP) interleaver in Turbo coding. And a subset of the set of at least 2 interleaving lengths;

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

The above rules may be used singly or in combination.

In an alternative implementation manner of this exemplary embodiment, in the rule 1, the first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where , [] represents a rounding operation; the rounding operation includes any one of the following: rounding rounding, rounding down, rounding up; N _CRC is the length of the cyclic redundancy check sequence; S is a real number greater than 1. . In the present embodiment, the S may be, but not limited to, a real number greater than 1 and less than 14, and E is an integer from 16 to 16.

In an alternative embodiment of the present exemplary embodiment, the second predetermined function Function 2 (N _PRB ) is N1-N _PRB ; N1 is an integer greater than one. In the present embodiment, the typical value of N1 described above may be, but is not limited to, any of the following values: 8, 9, 10, 11, and 12.

In an alternative implementation manner of the exemplary embodiment, the mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn each integer of 1 to 13, Function 2 ( N _PRB ) takes the values of 16, 11 , 8, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1 in sequence; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.

In an alternative implementation manner of the exemplary embodiment, in the rule three, if the first transmission data is Turbo coded, the preset TBS' table is larger than that supported by the QPP interleaver in Turbo coding. The set of TBS' values of the maximum interleaving length is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.

In an exemplary implementation manner of this embodiment, the first type of control signaling received by the first receiving module 301 is channel state indication (CSI) information, where a corresponding target error block rate (BLER) is equal to A0, wherein A0 is a real number greater than or equal to 10 ^-4 and less than or equal to 10 ^-1 .

In an alternative implementation manner of this exemplary embodiment, the channel state indication information includes at least one of the following information: CQI, channel RI, channel PMI.

In an exemplary implementation manner of this embodiment, the second type of control signaling received by the second receiving module 303 is used to determine at least a modulation order and a resource block number of the retransmitted data.

In an alternative implementation manner of the exemplary embodiment, the target error block rate (BLER) of the retransmission data corresponding to the second type of control signaling is equal to A1, where A1 is greater than or equal to 10 ^-8. , a real number less than or equal to 10 ^-3 .

In an exemplary implementation manner of this embodiment, the second type of control signaling includes at least one of the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ] State information, Z is an integer greater than or equal to 2.

In an alternative implementation manner of the exemplary embodiment, among the Z state information sets, ACK indicates that the terminal correctly receives, and NACK ₀ , . . . , NACK _(Z-2) indicates terminal error reception.

In an alternative implementation manner of this exemplary embodiment, the NACK _i information is used to indicate at least one of: a modulation order of retransmitting data, a number of resource blocks, where i is 0 to Z-2 The integer.

Wherein, the typical value of Z can be, but is not limited to, any of the following values: 4, 8, 16, 32.

In an exemplary implementation manner of this embodiment, the third type of control signaling includes: at least downlink control information (DCI); the DCI includes at least: an MCS index, a TBS index, a resource block number, and a resource block location.

For further implementation details, refer to the first embodiment.

Embodiment 4: A data transmission processing device is applied to a terminal, as shown in FIG. 4, and includes:

The first sending module 401 is configured to send the first type of control signaling to the base station;

The first data receiving module 402 is configured to receive the third type of control signaling and the first transmission data sent by the base station;

The second sending module 403 is configured to send the second type of control signaling to the base station;

The retransmission data receiving module 404 is configured to receive retransmission data corresponding to the first transmission data if the first transmission data is received incorrectly.

In an exemplary embodiment of the present embodiment, the data transmission processing apparatus further includes: a reference signal receiving module 400, configured to receive the first type of control signaling before the first sending module 401 sends the first type of control signaling to the base station. Deriving a reference signal transmitted by the base station, performing channel measurement according to the reference signal to obtain the first type of control signaling.

In an exemplary implementation manner of this embodiment, determining, by using the third type of control signaling, a TBS index I _TBS and a resource block number N _PRB ; acquiring, according to a preset TBS' table, the first data receiving module receives The transport block size TBS' of the first transmission data; the preset TBS' table is a two-dimensional table, the row index is the TBS index I _TBS , the column index is the number of resource blocks N _PRB , and the combination of a pair of I _TBS and N _PRB A TBS'; wherein the set of row indices I _{TBS is} a set of 0 to Q1, Q1 is an integer greater than or equal to 4, and the set of column indices N _{PRB is} a subset of the set of natural numbers.

In an alternative embodiment of the present exemplary embodiment, the preset TBS' table is determined according to a predetermined rule, the predetermined rule including at least one of the following rules:

Rule 1: Determine a preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), where TBS' is an element value of a combination of I _TBS and N _PRB in the preset TBS' table, and TBS is The index entry in the first TBS table is an element value of a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

Rule 2: In the preset TBS' table, when I _TBS <Function2(N _PRB ) is satisfied, the TBS' value is null; wherein Function 2 (N _PRB ) is a second predetermined function with N _PRB as an independent variable;

Rule 3: If the first transmission data is Turbo coded, the preset TBS' table, the set of all TBS' values is the interleaving length and at least 2 supported in the quadratic permutation polynomial (QPP) interleaver in Turbo coding. a subset of the set of interleaved lengths;

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

The above rules may be used singly or in combination.

In an alternative implementation manner of this exemplary embodiment, in the rule 1, the first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where , [] represents a rounding operation; the rounding operation includes any one of the following: rounding rounding, rounding down, rounding up; N _CRC is the length of the cyclic redundancy check sequence; S is a real number greater than 1. . In the present embodiment, the S may be, but not limited to, a real number greater than 1 and less than 14, and E is an integer from 16 to 16.

In an alternative embodiment of the present exemplary embodiment, the second predetermined function Function 2 (N _PRB ) is N1-N _PRB , and N1 is an integer greater than one. In the present embodiment, the typical value of N1 described above may be, but is not limited to, any of the following values: 8, 9, 10, 11, and 12.

In an alternative implementation manner of the exemplary embodiment, the mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn each integer of 1 to 13, Function 2 ( N _PRB ) takes the values of 16, 11 , 8, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1 in sequence; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.

In an alternative implementation manner of the exemplary embodiment, in the rule three, if the first transmission data is Turbo coded, the preset TBS' table is larger than the maximum supported in the QPP interleaver in Turbo coding. The set of TBS' values of the interleaving length is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.

In an exemplary implementation manner of this embodiment, the first type of control signaling sent by the first sending module 401 is channel state indication (CSI) information, and the corresponding target error block rate (BLER) is equal to A0, A0. Is a real number greater than or equal to 10 ^-4 and less than or equal to 10 ^-1 .

In an alternative implementation manner of this exemplary embodiment, the channel state indication information includes at least one of the following information: CQI, channel RI, channel PMI.

In an exemplary implementation manner of this embodiment, the second type of control signaling sent by the second sending module 403 is used to determine at least a modulation order and a resource block number of the retransmitted data.

The target error block rate (BLER) of the retransmission data corresponding to the second type of control signaling is equal to A1, where A1 is a real number greater than or equal to 10 ^-8 less than or equal to 10 ^-3 .

In an exemplary implementation manner of this embodiment, the second type of control signaling sent by the second sending module 403 includes at least the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _{(Z- 2)} A state information in which Z is an integer greater than or equal to 2.

In an alternative implementation manner of the exemplary embodiment, among the Z state information sets, ACK indicates that the terminal correctly receives, and NACK ₀ , . . . , NACK _(Z-2) indicates terminal error reception.

In an alternative implementation manner of this exemplary embodiment, the NACK _i information is used to indicate at least one of: a modulation order of retransmitting data, a number of resource blocks, where i is an integer from 0 to Z-2 Wherein, the typical value of Z can be, but is not limited to, any of the following values: 4, 8, 16, 32.

In an exemplary implementation manner of this embodiment, the third type of control signaling includes: at least downlink control information (DCI); the DCI includes at least: an MCS index, a TBS index, a resource block number, and a resource block location.

For further implementation details, refer to the first embodiment.

The above embodiment is explained below by a plurality of implementation examples.

Implementation example 1

The present embodiment is applied to a car network system. The base station transmits data to the in-vehicle system, and requires low-latency data transmission, and the maximum delay of the data does not exceed 1 millisecond. The TTI adopted by the communication system is 2 OFDM symbols, wherein the first OFDM symbol carries control signaling, the second OFDM symbol carries data, and the effective subcarrier data of each OFDM symbol is 800.

The present embodiment provides a data transmission processing method, which is applied to a base station, and the terminal is the in-vehicle system, and includes the following steps:

Step 10: Send a reference signal to the terminal.

Step 11: Receive first type control signaling fed back by the terminal.

Step 12: Send, according to the received first type of control signaling, a third type of control signaling and first transmission data to the terminal.

Step 13: Receive a second type of control signaling fed back by the terminal.

Step 14: If the second type of control signaling indicates that the data is received incorrectly, send retransmission data corresponding to the first transmission data to the terminal.

In the step 10, the reference signal is used to indicate that the in-vehicle system performs channel measurement to obtain the first type of control signaling.

In the step 12, the transport block size TBS' of the first transmission data is an element value in a preset TBS' table, the preset TBS' table is a two-dimensional table, and the row index is a TBS index I _TBS . The column index is the number of resource blocks N _PRB , and the combination of a pair of I _TBS and N _PRB corresponds to one TBS '; wherein the set of row indexes I _{TBS is} a set of 0 to Q1, Q1 is an integer greater than or equal to 4, and the column index The set of N _{PRBs is} a subset of a set of natural numbers, such as a set of all integers from 1 to Q2, or a set of all odd numbers, or a set of all even numbers, Q2 equals 150.

The preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes at least one of the following rules:

Rule one: determining the preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), wherein TBS' is an element of the combination in which the index entry in the preset TBS' table is a combination of I _TBS and N _PRB Value, TBS is an element value in which the index entry in the first TBS table is a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

The first TBS table may be, but is not limited to, an existing {I _TBS , N _PRB } and TBS mapping relationship table, such as Table 1 above. This allows the designed system physical layer channel coding TBS length to be compatible with each other, facilitating system design and physical layer hardware design.

Rule 2: In the preset TBS' table, when the row index I _TBS and the column index N _PRB satisfy I _TBS <Function 2 (N _PRB ), the TBS 'value is null; wherein Function 2 (N _PRB ) is N _PRB a second predetermined function of the independent variable;

In the rule 2, in the system design process, if the TTI only contains a small number of OFDM symbols, the TTI only contains a small number of REs, and if the allocated RBs are small, the corresponding MCS (Modulation and Coding Scheme, modulation coding) The strategy is coded. The number of TBSs is small enough to constitute the number of input bits for channel coding (Turbo coding), so TBS' needs to be set to null at this time.

Rule 3: If the first transmission data is Turbo coded, all the TBS' values in the preset TBS' table are all the interleave lengths supported by the quadratic permutation polynomial (QPP) interleaver in Turbo coding. And a subset of the set of at least 2 interleaving lengths;

In the third rule, TBS' is required to be equal to the interleave length of the QPP interleaver in Turbo coding, that is, equal to the number of input bits of Turbo coding, which is advantageous for Turbo coding, and no need to fill bits internally in Turbo coding. The at least two interleave lengths are any two interleave lengths of all interlace lengths supported by the QPP interleaver.

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, N _PRE is the number of resource particles; in the OFDM system, the resource particle refers to the subcarrier that can carry data, the number of resource particles N _PRE is equal to R times the number of resource blocks N _PRB , where R is the number of resource particles in each resource block, and R is an integer from 6 to 160; in a single carrier (SC) system, resource particles are data that can carry data. Constellation modulation symbol.

In the fourth rule, the code rate of the limited channel coding cannot exceed a certain threshold, which is beneficial to ensure the transmission performance of the channel coding. If the code rate is too high, the performance is degraded and the error leveling phenomenon occurs.

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

In the rule 5, the limitation of the TBS' value in the preset TBS' table supports a certain lower code rate to ensure communication reliability; especially in an ultra-reliable system, a relatively low code rate is required. It supports high reliability of the transport block and increases system robustness. If low latency is also required, the low bit rate can greatly improve the correct probability of the first pass data and reduce the retransmission data, thereby greatly reducing the communication delay.

The above rules may be used singly or in combination.

In the first rule, the first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where N _CRC is the length of the cyclic redundancy check sequence, [] Indicates a rounding operation (ie, rounding off (TBS+N _CRC )/S), and the rounding operation includes any one of the following: rounding off, rounding down, rounding up; S is greater than 1. Real number. The S may be, but is not limited to, a real number greater than 1 and less than 14; E is an integer from 16 to 16.

In the rule 2, the second predetermined function Function 2 (N _PRB ) is N1-N _PRB , where N1 is an integer greater than 1. The typical value of the N1 may be, but is not limited to, any one of the following: 8, 9, 10, 11, and 12.

Alternatively, in the rule 2, the mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn each of integers 1 to 13, Function 2 (N _PRB ) takes values in turn. It is 16, 11, 8, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.

The rule 3 includes: if the first transmission data is Turbo coded, the set of TBS' values in the preset TBS' table that is larger than the maximum interleave length supported in the QPP interleaver in Turbo coding is QPP. The sum of the at least two interleaving lengths supported in the interleaver forms a subset of the set.

In this implementation example, the first type of control signaling is channel state indication (CSI) information, which corresponds to a target error block rate (BLER) equal to A0, where A0 is greater than or equal to 10 ^-4 , less than or equal to 10 ^-1 real number. Wherein, the typical value of the A0 can be, but is not limited to, any one of the following: 10 ^-1 , 10 ^-2 , 10 ^-3 , 10 ^-4 . The channel state indication information includes at least one of the following information: CQI, channel RI, channel PMI.

In this implementation example, the second type of control signaling is used to determine at least a modulation order and a resource block number of the retransmitted data. The target error block rate (BLER) of the retransmission data corresponding to the second type of control signaling may be equal to A1, and A1 is a real number greater than or equal to 10 ^-8 and less than or equal to 10 ^-3 . The typical value of the A1 may be, but not limited to, any one of the following: 10 ^-4 , 10 ^-5 , 10 ^-6 , 10 ^-7 , 10 ^-8 .

Or the second type of control signaling includes at least one of the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ], and Z is greater than or equal to 2. Integer. Wherein, in the Z state information sets, the ACK may indicate that the terminal correctly receives, and the NACK ₀ , . . . , NACK _(Z-2) may indicate that the terminal receives the error. The base station determines at least one of the following: at least one of the received NACK _i : a modulation order of the retransmitted data, and a number of resource blocks, where i is an integer from 0 to Z-2. Wherein, the typical value of Z may be, but is not limited to, any one of the following: 4, 8, 16, 32.

In this implementation example, the third type of control signaling includes at least: downlink control information (DCI); the DCI includes at least: an MCS index, a TBS index, a number of resource blocks, and a resource block location.

Implementation example 2

The embodiment provides a data transmission processing method, which is applied to a terminal, and includes:

Step 20: Receive a reference signal sent by the base station, perform channel measurement according to the reference signal, and obtain first type control signaling.

Step 21: Send the first type of control signaling to the base station.

Step 22: Receive third type control signaling and first transmission data sent by the base station.

Step 23: Send a second type of control signaling to the base station.

Step 24: If the first transmission data is received incorrectly, receive retransmission data corresponding to the first transmission data from the base station.

In this embodiment, in an exemplary implementation manner of this embodiment, the TBS index I _TBS and the resource block number N _{PRB are} determined by using the third type of control signaling; and the transmission of the first transmission data is obtained according to the preset TBS' table. a block size TBS', the preset TBS' table is a two-dimensional table, the row index is a TBS index I _TBS , the column index is the number of resource blocks N _PRB , and a combination of a pair of I _TBS and N _PRB corresponds to one TBS '; The set of row index I _{TBS is} a set of 0 to Q1, Q1 is an integer greater than or equal to 4, and the set of column index N _{PRB is} a subset of the set of natural numbers.

The preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes at least one of the following rules:

Rule 1: Determine a preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), where TBS' is an element value of a combination of I _TBS and N _PRB in the preset TBS' table, and TBS is The index entry in the first TBS table is an element value of a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

Rule 2: In the preset TBS' table, when I _TBS <Function2(N _PRB ) is satisfied, the TBS' value is null; wherein Function 2 (N _PRB ) is a second predetermined function with N _PRB as an independent variable;

Rule 3: If the first transmission data is Turbo coded, the preset TBS' table, the set of all TBS' values is the interleaving length and at least 2 supported in the quadratic permutation polynomial (QPP) interleaver in Turbo coding. a subset of the set of interleaved lengths;

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

The above rules may be used singly or in combination.

In the first rule, the first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where [] represents a rounding operation; the rounding operation includes the following Either rounding, rounding down, rounding up; N _CRC is the length of the cyclic redundancy check sequence; S is a real number greater than 1, and E is an integer from -16 to 16. Wherein, the S may be, but is not limited to, a real number greater than 1 and less than 14.

The rule 2 may also have the following feature: the second predetermined function Function 2 (N _PRB ) is N1-N _PRB , where N1 is an integer greater than 1.

Alternatively, the rule 2 may further have the following feature: the mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: when N _{PRB is} in turn each of integers 1 to 13, Function 2 (N _PRB ) takes values of 16, 11, 8, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1 in sequence; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.

The rule 3 may also have the following feature: if the first pass data is Turbo coded, The set of TBS' values in the preset TBS' table that is larger than the maximum interleaver length supported in the QPP interleaver in Turbo coding is a subset of the set of at least two interleaving lengths supported in the QPP interleaver. .

In this implementation example, the first type of control signaling is channel state indication (CSI) information, which corresponds to a target error block rate (BLER) equal to A0, where A0 is greater than or equal to 10 ^-4 , less than or equal to 10 ^-1 real number. The channel state indication information includes at least one of the following information: CQI, channel RI, channel PMI.

In this implementation example, the second type of control signaling is used to determine at least a modulation order and a resource block number of the retransmitted data.

The target error block rate (BLER) of the retransmission data corresponding to the second type of control signaling is equal to A1, and A1 is a real number greater than or equal to 10 ^-8 and less than or equal to 10 ^-3 .

Or the second type of control signaling includes at least one of the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ], and Z is greater than or equal to 2. Integer. Wherein, in the Z state information sets, the ACK may indicate that the terminal correctly receives, and the NACK ₀ , . . . , NACK _(Z-2) may indicate that the terminal receives the error.

The NACK _i information is used to indicate at least one of: a modulation order of retransmitting data, and a number of resource blocks, where i is an integer from 0 to Z-2, wherein a typical value of Z may be, but not limited to, any of the following Values: 4, 8, 16, 32.

In this implementation example, the third type of control signaling includes at least: downlink control information (DCI); the DCI includes at least: an MCS index, a TBS index, a number of resource blocks, and a resource block location.

Implementation example 3

The present embodiment provides a data transmission processing apparatus, which is applied to a base station, and includes:

The reference signal sending module is configured to send a reference signal to the terminal, where the reference signal is used to instruct the terminal to perform channel measurement to obtain the first type of control signaling.

The first receiving module is configured to receive the first type of control signaling fed back by the terminal;

The first data transmission module is configured to send the third type of control signaling and the first transmission data to the terminal according to the received first type of control signaling;

The second receiving module is configured to receive the second type of control signaling fed back by the terminal;

The retransmission data sending module is configured to: if the second type of control signaling indicates that the data is received incorrectly, send retransmission data corresponding to the first transmission data to the terminal.

In this implementation example, the transport block size TBS' of the first transmission data sent by the first transmission data sending module is an element value in a preset TBS' table, and the preset TBS' table is a two-dimensional table. The row index is the TBS index I _TBS , the column index is the number of resource blocks N _PRB , and the combination of a pair of I _TBS and N _PRB corresponds to one TBS′; wherein the set of the row index I _{TBS is} a set of 0 to Q1, and Q1 is An integer greater than or equal to 4, the set of column indices N _{PRB is} a subset of the set of natural numbers.

The preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes at least one of the following rules:

Rule one: determining the preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), wherein TBS' is an element of the combination in which the index entry in the preset TBS' table is a combination of I _TBS and N _PRB Value, TBS is an element value in which the index entry in the first TBS table is a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

Rule 2: In the preset TBS' table, when the row index I _TBS and the column index N _PRB satisfy I _TBS <Function 2 (N _PRB ), the TBS 'value is null; wherein Function 2 (N _PRB ) is N _PRB a second predetermined function of the independent variable;

Rule 3: If the first transmission data is Turbo coded, all the TBS' values in the preset TBS' table are all the interleave lengths supported by the quadratic permutation polynomial (QPP) interleaver in Turbo coding. And a subset of the set of at least 2 interleaving lengths;

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

The above rules may be used singly or in combination.

The rule 1 may further have the following feature: the first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where [] represents a rounding operation; The rounding operation includes any one of the following: rounding rounding, rounding down, rounding up; N _CRC is the length of the cyclic redundancy check sequence; S is a real number greater than 1, and E is an integer from -16 to 16.

The rule 2 may also have the following feature: the second predetermined function Function 2 (N _PRB ) is N1-N _PRB ; wherein N1 is an integer greater than 1.

Alternatively, the rule 2 may further have the following feature: the mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: when N _{PRB is} in turn each of integers 1 to 13, Function 2 (N _PRB ) takes values of 16, 11, 8, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1 in sequence; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.

The rule 3 may further have the following feature: if the first transmission data is Turbo coded, the TBS' value in the preset TBS' table is greater than the maximum interleave length supported by the QPP interleaver in Turbo coding. The constructed set is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.

In this implementation example, the first type of control signaling received by the first receiving module is channel state indication (CSI) information, where a corresponding target error block rate (BLER) is equal to A0, where A0 is greater than or equal to 10 ^-4 , a real number less than or equal to 10 ^-1 . The channel state indication information includes at least one of the following information: CQI, channel RI, channel PMI.

In this implementation example, the second type of control signaling received by the second receiving module is used to determine at least a modulation order and a number of resource blocks of the retransmitted data.

The target error block rate (BLER) of the retransmission data corresponding to the second type of control signaling is equal to A1, where A1 is a real number greater than or equal to 10 ^-8 and less than or equal to 10 ^-3 .

Or the second type of control signaling includes at least one of the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ], and Z is greater than or equal to 2. Integer. Among the Z state information sets, ACK indicates that the terminal correctly receives, and NACK ₀ , ..., NACK _(Z-2) indicates terminal error reception.

The NACK _i information is used to indicate at least one of: a modulation order of retransmitting data, and a number of resource blocks, where i is an integer from 0 to Z-2.

Wherein, the typical value of Z can be, but is not limited to, any of the following values: 4, 8, 16, 32.

In this implementation example, the third type of control signaling includes at least: downlink control information (DCI); the DCI includes at least: an MCS index, a TBS index, a number of resource blocks, and a resource block location.

Implementation example 4

The present embodiment provides a data transmission processing apparatus, which is applied to a terminal, and includes:

The reference signal receiving module is configured to receive the reference signal sent by the base station, perform channel measurement according to the reference signal, and obtain the first type of control signaling;

The first sending module is configured to send the first type of control signaling to the base station;

The first data receiving module is configured to receive the third type of control signaling and the first transmission data sent by the base station;

a second sending module, configured to send a second type of control signaling to the base station;

The retransmission data receiving module is configured to receive retransmission data corresponding to the first transmission data if the first transmission data is received incorrectly.

In this implementation example, the TBS index I _TBS and the resource block number N _{PRB are} determined by using the third type of control signaling; and the transport block size of the first transmission data received by the first transmission data receiving module is obtained according to the preset TBS' table. TBS'; the preset TBS' table is a two-dimensional table, the row index is the TBS index I _TBS , the column index is the number of resource blocks N _PRB , and the combination of a pair of I _TBS and N _PRB corresponds to one TBS '; The set of index I _{TBS is} a set of 0 to Q1, Q1 is an integer greater than or equal to 4, and the set of column index N _{PRB is} a subset of the set of natural numbers.

The preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes at least one of the following rules:

Rule 1: Determine a preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), where TBS' is an element value of a combination of I _TBS and N _PRB in the preset TBS' table, and TBS is The index entry in the first TBS table is an element value of a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

Rule 2: In the preset TBS' table, when I _TBS <Function2(N _PRB ) is satisfied, the TBS' value is null; wherein Function 2 (N _PRB ) is a second predetermined function with N _PRB as an independent variable;

Rule 3: If the first transmission data is Turbo coded, the preset TBS' table, the set of all TBS' values is the interleaving length and at least 2 supported in the quadratic permutation polynomial (QPP) interleaver in Turbo coding. a subset of the set of interleaved lengths;

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

The above rules may be used singly or in combination.

The rule 1 may further have the following feature: the first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where [] represents a rounding operation; The rounding operation includes any one of the following: rounding rounding, rounding down, rounding up; N _CRC is the length of the cyclic redundancy check sequence; S is a real number greater than 1, and E is an integer from -16 to 16.

The rule 2 may also have the following feature: the second predetermined function Function 2 (N _PRB ) is N1-N _PRB , where N1 is an integer greater than 1.

Alternatively, the rule 2 may further have the following feature: the mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: when N _{PRB is} in turn each of integers 1 to 13, Function 2 (N _PRB ) takes values of 16, 11, 8, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1 in sequence; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.

The rule 3 may further have the following feature: if the first transmission data is Turbo coded, the TBS' table in the preset TBS' table is larger than the TBS' value supported by the maximum interleave length supported by the QPP interleaver in Turbo coding. Is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.

In this implementation example, the first type of control signaling sent by the first sending module is channel state indication (CSI) information, where the corresponding target error block rate (BLER) is equal to A0, and A0 is greater than or equal to 10 ^-4 . A real number less than or equal to 10 ^-1 . The channel state indication information includes at least one of the following information: CQI, channel RI, channel PMI.

In this implementation example, the second type of control signaling sent by the second sending module is used to determine at least a modulation order and a number of resource blocks of the retransmitted data. The target error block rate (BLER) of the retransmission data corresponding to the second type of control signaling is equal to A1, where A1 is a real number greater than or equal to 10 ^-8 and less than or equal to 10 ^-3 .

Or the second type of control signaling sent by the second sending module includes at least one of the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ], Z Is an integer greater than or equal to 2. Among them, in the Z state information sets, ACK indicates that the terminal correctly receives, and NACK ₀ , ..., NACK _(Z-2) indicates that the terminal receives the error.

The NACK _i information is used to indicate at least one of: a modulation order of retransmitting data, and a number of resource blocks, where i is an integer from 0 to Z-2; wherein a typical value of Z can be, but is not limited to, any of the following Values: 4, 8, 16, 32.

In this implementation example, the third type of control signaling includes at least: downlink control information (DCI); the DCI includes at least: an MCS index, a TBS index, a number of resource blocks, and a resource block location.

Implementation example 5

This example is assumed to be an OFDM system in a Low Latency system. One TTI occupies 2 OFDM symbols and the bandwidth is 20 MHz. One resource block (RB) is 12 consecutive OFDM symbols in a TTI. Carrier, and only one layer of transmission. The present embodiment is applied to a base station, and the combination of the TBS index number and the number of resource blocks configured in the upper layer is {I _TBS , N _PRB }, and the base station sends service data to the terminal according to the configured {I _TBS , N _PRB }, which may include the following. step:

Step 50: Send a reference signal to the terminal, where the reference signal is used to indicate that the terminal performs channel measurement to obtain the first type of control signaling.

Step 51: Receive first type control signaling fed back by the terminal; the first type of control signaling is channel state indication information, and the corresponding target error block rate (BLER) is equal to A0, where A0 is greater than or equal to 10 ^{- 4} , a real number less than or equal to 10 ^-1 , in the present embodiment, A0 is equal to 10 ^-2 ; the channel state indication information includes CQI; if the base station and the terminal have MIMO (Multiple-Input Multiple-Output) And communicating, the channel state indication information may further include: a channel RI, a channel PMI. The CQI is as shown in Table 3. Both the CQI table base station and the terminal are known.

Table 3 CQI table used in this implementation example

Step 52: Send, according to the received first type of control signaling, a third type of control signaling and first transmission data to the terminal; and the base station refers to the first type of control information that is received by the terminal for uplink transmission. For example, if the CQI information is included, the third type of control signaling is configured, such as a resource location including the first transmission data, a TBS index number I _TBS, and a resource block number N _PRB . The third type of control signaling may be a DCI, including: an MCS index, a TBS index, a number of resource blocks, a resource block location, and the like.

The transport block size TBS' of the first transmission data sent by the base station is an element value in a preset TBS' table, the preset TBS' table is a two-dimensional table, and the row index is a TBS index I _TBS , a column index For the number of resource blocks N _PRB , a combination of a pair of I _TBS and N _PRB corresponds to one TBS ', wherein the set of row indices I _{TBS is} a set of 0 to Q1, Q1 is an integer greater than or equal to 4, and the column index N _PRB The set is a subset of the set of natural numbers; in this embodiment, Q1 is equal to 15, the set of N _{PRB is} a set of 1 to 100; and the preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes At least one of the following rules:

Rule 1: Determine a preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), where TBS' is an element value of a combination of I _TBS and N _PRB in the preset TBS' table, and TBS is The index entry in the first TBS table is the element value of the combination of I _TBS and N _PRB , and Function 1 (TBS) is the first predetermined function with the TBS as the independent variable; in this embodiment, the first TBS table is the TBS in the LTE system. For the table, the element values of 16 rows×100 columns are intercepted, that is, the range of the TBS index I _TBS is 0-15, and the number of resource blocks N _PRB ranges from 1 to 100, as shown in Table 4.

Table 4 TBS table in LTE system (16 rows × 100 columns)

The first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where [] represents a rounding operation; the rounding operation includes any one of the following: rounding off Rounding down, rounding up; S is a real number greater than 1 and less than 14, N _CRC is the length of the cyclic redundancy check sequence, and E is an integer from -16 to 16, in this embodiment, S=10 , N _CRC = 24.

Rule 2: In the preset TBS' table, when the row index I _TBS and the column index N _PRB satisfy I _TBS <Function 2 (N _PRB ), the TBS 'value is null; wherein Function 2 (N _PRB ) is N _PRB a second predetermined function of the independent variable; the second predetermined function Function 2 (N _PRB ) is N1-N _PRB ; in the present embodiment, the N1=10. Alternatively, the mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn each of integers 1 to 13, Function 2 (N _PRB ) takes values of 16, 11, 8, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1; When N _PRB > 13, Function 2 (N _PRB ) is equal to zero.

Rule 3: If the first transmission data is Turbo coded, all the TBS' values in the preset TBS' table are all the interleave lengths supported by the quadratic permutation polynomial (QPP) interleaver in Turbo coding. a subset of the set of the sum of the at least two interleaving lengths; if the first pass data is Turbo encoded, the TBS' value in the preset TBS' table is greater than the maximum interleaving length supported in the QPP interleaver in the Turbo encoding The constructed set is a subset of the set of at least two interleaving lengths supported in the QPP interleaver. In this embodiment, the Turbo coding method in the LTE system is adopted, and the quadratic permutation polynomial (QPP) interleaver is: the bit of the input Qr interleaver of the Turbo code is represented as c ₀ , c ₁ , . . . , c _K-1 , where K is the number of input bits, and the output of the interleaver is represented as c' ₀ , c' ₁ , ..., c' _K-1 , and the relationship between the input and output bits is as follows: c' _i = c _{Π (i), i = 0,1,} ..., (K-1); wherein the relationship between the output index i and an input number [pi (i) satisfies the following quadratic form, namely: Π (i) = (f 1 · i +f ₂ ·i ² )mod K. The parameters f ₁ and f ₂ depend on the transport block size K, which is the interleave length of the QPP interleaver within the Turbo code, as shown in Table 5. As can be seen from Table 5, the length of the QPP interleaver in the turbo code is a minimum of 40 bits. In the preset TBS' table, the TBS' has a minimum value. In the present embodiment, the minimum value is 40-N _CRC = 16.

Table 5 Interleave length of the QPP interleaver in the Turbo code (supported transport block size)

i	K	f 1	f 2	i	K	f 1	f 2	i	K	f 1	f 2	i	K	f 1	f 2
1	40	3	10	48	416	25	52	95	1120	67	140	142	3200	111	240
2	48	7	12	49	424	51	106	96	1152	35	72	143	3264	443	204
3	56	19	42	50	432	47	72	97	1184	19	74	144	3328	51	104
4	64	7	16	51	440	91	110	98	1216	39	76	145	3392	51	212
5	72	7	18	52	448	29	168	99	1248	19	78	146	3456	451	192
6	80	11	20	53	456	29	114	100	1280	199	240	147	3520	257	220
7	88	5	twenty two	54	464	247	58	101	1312	twenty one	82	148	3584	57	336
8	96	11	twenty four	55	472	29	118	102	1344	211	252	149	3648	313	228
9	104	7	26	56	480	89	180	103	1376	twenty one	86	150	3712	271	232
10	112	41	84	57	488	91	122	104	1408	43	88	151	3776	179	236
11	120	103	90	58	496	157	62	105	1440	149	60	152	3840	331	120
12	128	15	32	59	504	55	84	106	1472	45	92	153	3904	363	244
13	136	9	34	60	512	31	64	107	1504	49	846	154	3968	375	248
14	144	17	108	61	528	17	66	108	1536	71	48	155	4032	127	168
15	152	9	38	62	544	35	68	109	1568	13	28	156	4096	31	64
16	160	twenty one	120	63	560	227	420	110	1600	17	80	157	4160	33	130
17	168	101	84	64	576	65	96	111	1632	25	102	158	4224	43	264
18	176	twenty one	44	65	592	19	74	112	1664	183	104	159	4288	33	134
19	184	57	46	66	608	37	76	113	1696	55	954	160	4352	477	408
20	192	twenty three	48	67	624	41	234	114	1728	127	96	161	4416	35	138
twenty one	200	13	50	68	640	39	80	115	1760	27	110	162	4480	233	280
twenty two	208	27	52	69	656	185	82	116	1792	29	112	163	4544	357	142
twenty three	216	11	36	70	672	43	252	117	1824	29	114	164	4608	337	480
twenty four	224	27	56	71	688	twenty one	86	118	1856	57	116	165	4672	37	146
25	232	85	58	72	704	155	44	119	1888	45	354	166	4736	71	444
26	240	29	60	73	720	79	120	120	1920	31	120	167	4800	71	120
27	248	33	62	74	736	139	92	121	1952	59	610	168	4864	37	152
28	256	15	32	75	752	twenty three	94	122	1984	185	124	169	4928	39	462
29	264	17	198	76	768	217	48	123	2016	113	420	170	4992	127	234
30	272	33	68	77	784	25	98	124	2048	31	64	171	5056	39	158
31	280	103	210	78	800	17	80	125	2112	17	66	172	5120	39	80
32	288	19	36	79	816	127	102	126	2176	171	136	173	5184	31	96
33	296	19	74	80	832	25	52	127	2240	209	420	174	5248	113	902
34	304	37	76	81	848	239	106	128	2304	253	216	175	5312	41	166
35	312	19	78	82	864	17	48	129	2368	367	444	176	5376	251	336
36	320	twenty one	120	83	880	137	110	130	2432	265	456	177	5440	43	170
37	328	twenty one	82	84	896	215	112	131	2496	181	468	178	5504	twenty one	86
38	336	115	84	85	912	29	114	132	2560	39	80	179	5568	43	174
39	344	193	86	86	928	15	58	133	2624	27	164	180	5632	45	176
40	352	twenty one	44	87	944	147	118	134	2688	127	504	181	5696	45	178
41	360	133	90	88	960	29	60	135	2752	143	172	182	5760	161	120
42	368	81	46	89	976	59	122	136	2816	43	88	183	5824	89	182
43	376	45	94	90	992	65	124	137	2880	29	300	184	5888	323	184
44	384	twenty three	48	91	1008	55	84	138	2944	45	92	185	5952	47	186
45	392	243	98	92	1024	31	64	139	3008	157	188	186	6016	twenty three	94
46	400	151	40	93	1056	17	66	140	3072	47	96	187	6080	47	190
47	408	155	102	94	1088	171	204	141	3136	13	28	188	6144	263	480

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, N _PRE is the number of resource particles; in the OFDM system, the resource particle refers to the subcarrier that can carry data, the number of resource particles N _PRE is equal to R times the number of resource blocks N _PRB , where R is the average number of resource particles in each resource block, and R is an integer from 6 to 160; in this embodiment, one TTI has only 2 OFDM symbols, so R is equal to 12.

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

According to the rules described above, a preset TBS' table as shown in Table 6 can be obtained, and a transport block size TBS' for low-latency communication is designed. The TBS index I _TBS ranges from 0 to 15, and the number of resource blocks is N. _{The PRB} range is from 1 to 100. Wherein, the blank space in Table 6 indicates that the TBS' here is empty, that is, the corresponding transport block size TBS' is not supported in the I _TBS and N _PRB combinations here.

Table 6 Preset TBS' table (16 rows × 100 columns)

Step 53: Receive a second type of control signaling that is sent by the terminal; the second type of control signaling is used to determine at least a modulation order and a number of resource blocks of the retransmitted data; The target error block rate (BLER) of the retransmitted data is equal to A1, where A1 is a real number greater than or equal to 10 ^-8 and less than or equal to 10 ^-3 , and in the present embodiment, A1 is equal to 0.01. In order to achieve the target error block rate BLER=0.01, the number of resource blocks, the modulation order, or the number of resource blocks and the modulation order are different under different channel qualities, and the second type of control signaling is used. At least one of the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ], Z is an integer greater than or equal to 2, and in this embodiment, Z is equal to 4 Then, the Z state information sets are [ACK, NACK ₀ , NACK ₁ , and NACK ₂ ]; wherein ACK indicates that the terminal correctly receives, and NACK ₀ , NACK ₁ , and NACK ₂ indicate that the terminal receives the error.

Before the transmitting the retransmission data corresponding to the first transmission data to the terminal, the embodiment further includes: receiving, by the base station, the second type of control signaling, and determining, according to the NACK information obtained by parsing the second type of control signaling, the following at least One: the modulation order of the retransmitted data, the number of resource blocks, such as NACK ₀ , NACK ₁ , and NACK ₂ , respectively, the number of resource blocks is N _PRB -1, N _PRB , N _PRB +1, modulation order, and first pass The data is the same, where N _PRB is the number of resource blocks of the first transmission data; or the number of resource blocks corresponding to NACK ₀ , NACK ₁ , and NACK ₂ is N _PRB , N _PRB , N _PRB +1 , and the modulation order is Q _{m .} +1, Q _m , Q _m , where N _PRB is the number of resource blocks of the first transmission data, and Q _m is the modulation order of the first transmission data; the number of resource blocks and the modulation order are not limited to the combination. Z described above may also be equal to any of the following values: 4, 8, 16, 32.

Step 54: If the control signaling indicates the second type data reception error, the number of resource blocks allocated new N _'PRB, and the modulation order Q' _m of the second type based on the control signaling to the terminal on the resource corresponding to the respective Retransmission data of the first transmission data.

Implementation example 6

This embodiment example assumes that in a Low Latency system, an OFDM communication system has one TTI occupying 2 OFDM symbols and a bandwidth of 20 MHz, and one resource block (RB) is a continuous 12 OFDM symbols in one TTI. Subcarriers, and only one layer of transmission. The present embodiment is applied to a terminal, and the received TBS index number I _TBS and the resource block number N _PRB combination are obtained by the DCI of the received base station, and the terminal receives according to the obtained combination of the TBS index number I _TBS and the resource block number N _PRB . The service data sent by the base station is corresponding to the service data sent by the base station according to the implementation example 5. The receiving the service data by the terminal may include the following steps:

Step 61: Send a first type of control signaling to the base station; the first type of control signaling is obtained by performing channel measurement on a reference signal sent by the base station; the first type of control signaling is channel status indication information, and the corresponding target The error block rate (BLER) is equal to A0, where A0 is a real number greater than or equal to 10 ^-4 and less than or equal to 10 ^-1 , in the present embodiment, A0 is equal to 10 ^-2 ; the channel state indication information includes CQI If the base station and the terminal have MIMO communication, the channel state indication information may further include: a channel RI, a channel PMI. The CQI is as shown in Table 3 of the implementation example 5, and the CQI table base station and terminal are both known.

Step 62: Receive the third type of control signaling and the first transmission data sent by the base station; and obtain the TBS index number I _TBS and the number of resource blocks N of the downlink first transmission data by using the third type of control signaling (DCI) sent by the base station by the terminal. _PRB , obtaining the first pass data on the corresponding resource location. The transport block size TBS' of the received first transmission data is determined by a preset TBS'table; and the preset TBS' table is determined according to a predetermined rule, wherein the predetermined rule includes at least one of the following rules:

Rule 1: Determine a preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), where TBS' is an element value of a combination of I _TBS and N _PRB in the preset TBS' table, and TBS is The index entry in the first TBS table is the element value of the combination of I _TBS and N _PRB , and Function 1 (TBS) is the first predetermined function with the TBS as the independent variable; in this embodiment, the first TBS table is the TBS in the LTE system. The table, the element value of 16 rows × 100 columns is intercepted, that is, the transport block size TBS index I _TBS ranges from 0 to 15, and the number of resource blocks N _PRB ranges from 1 to 100, as shown in Table 4 in Embodiment 5 . The first predetermined function Function1 (TBS) is [(TBS+N _CRC )/S]-N _CRC +E, where [] represents a rounding operation; the rounding operation includes any one of the following: rounding off , rounding down, rounding up; S is a real number greater than 1 and less than 14, N _CRC is a cyclic redundancy check sequence length, E is an integer from -16 to 16, in the present exemplary embodiment, S = 10 , N _CRC = 24.

Rule 2: In the preset TBS' table, when the row index I _TBS and the column index N _PRB satisfy I _TBS <Function 2 (N _PRB ), the TBS 'value is null; wherein Function 2 (N _PRB ) is N _PRB a second predetermined function of the independent variable; the second predetermined function Function 2 (N _PRB ) is N1-N _PRB ; in the present embodiment, the N1=10. Alternatively, the mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn each of integers 1 to 13, Function 2 (N _PRB ) takes values of 16, 11, 8, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1; When N _PRB > 13, Function 2 (N _PRB ) is equal to zero.

Rule 3: If the first transmission data is Turbo coded, all the TBS' values in the preset TBS' table are all the interleave lengths supported by the quadratic permutation polynomial (QPP) interleaver in Turbo coding. a subset of the set of the sum of the at least two interleaving lengths; if the first pass data is Turbo encoded, the TBS' value in the preset TBS' table is greater than the maximum interleaving length supported in the QPP interleaver in the Turbo encoding The constructed set is a subset of the set of at least two interleaving lengths supported in the QPP interleaver. In this embodiment, the Turbo coding method in the LTE system is adopted, and the quadratic permutation polynomial (QPP) interleaver is: the bit of the input Qr interleaver of the Turbo code is represented as c ₀ , c ₁ , . . . , c _K-1 , where K is the number of input bits, and the output of the interleaver is represented as c' ₀ , c' ₁ , ..., c' _K-1 , and the relationship between the input and output bits is as follows: c' _i = c _{Π (i)} , i = 0, 1, ..., (K-1); wherein the relationship between the output number i and the input number Π(i) satisfies the following quadratic form, namely: Π(i)=(f ₁ ·i +f ₂ ·i ² )mod K. The parameters f ₁ and f ₂ depend on the transport block size K, which is the interleave length of the QPP interleaver in the Turbo code. As shown in Table 5 of Embodiment 5, it can be seen that the QPP interlace in the Turbo code. The length of the device is a minimum of 40 bits, and in the preset TBS' table, TBS' has a minimum value, and in the present embodiment, the minimum value is 40-N _CRC = 16.

Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.

According to the above-mentioned rules, a preset TBS' table as shown in Table 6 in Embodiment 5 can be obtained, and a transport block size TBS' design for a low-latency communication system, and a TBS index I _TBS ranges from 0 to 15. The number of resource blocks N _PRB ranges from 1 to 100.

Step 63: Send a second type of control signaling to the base station; the second type of control signaling is used to determine at least a modulation order and a number of resource blocks of the retransmitted data; The target error block rate (BLER) of the transmitted data is equal to A1, where A1 is a real number greater than or equal to 10 ^-8 and less than or equal to 10 ^-3 , and in the present embodiment, A1 is equal to 0.01. In order to achieve the target error block rate BLER=0.01, the number of resource blocks, the modulation order, or the number of resource blocks and the modulation order are different under different channel qualities, and the second type of control signaling is used. At least one of the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ], Z is an integer greater than or equal to 2, and in this embodiment, Z is equal to 4 Then, the Z state information sets are [ACK, NACK ₀ , NACK ₁ , and NACK ₂ ]; wherein ACK indicates that the terminal correctly receives, and NACK ₀ , NACK ₁ , and NACK ₂ indicate that the terminal receives the error. The NACK information in the second type of control signaling determines at least one of the following: a modulation order of the retransmitted data, and a number of resource blocks, such as NACK ₀ , NACK ₁ , and NACK ₂ respectively, and the number of retransmitted data resource blocks is N. _PRB -1, N _PRB , N _PRB +1, the retransmission data modulation order is the same as the first transmission data, where N _PRB is the number of resource blocks of the first transmission data; or NACK ₀ , NACK ₁ , NACK ₂ respectively correspond to the weight The number of transmitted data resource blocks is N _PRB , N _PRB , N _PRB +1 , and the retransmission data modulation order is Q _m +1, Q _m , Q _m , where N _PRB is the number of resource blocks of the first transmission data, Q _m is the modulation order of the first transmission data; the number of resource blocks and the modulation order are not limited to the combination. Z described above may also be equal to any of the following values: 4, 8, 16, 32.

Step 64: If the first transmission data is received incorrectly, receive retransmission data corresponding to the first transmission data. Number of resource blocks allocated by the base station obtaining base station DCI N _'PRB modulation order and Q' _m, to obtain the retransmitted data in the primarily transmitted data on a corresponding resource, and decoded.

In addition, an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, which are implemented by the processor to implement the above data transmission processing method applied to a base station.

In addition, an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, which are implemented by the processor to implement the above data transmission processing method applied to the terminal.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and functional blocks/units of the methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical units; for example, one physical component may have multiple functions, or one function or step may be composed of several physical The components work together. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer readable medium, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer. Moreover, it is well known to those skilled in the art that communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .

The embodiments disclosed in the present application are as described above, but the description is only for the purpose of understanding the present application, and is not intended to limit the present application. Any modifications and changes in the form and details of the embodiments may be made by those skilled in the art without departing from the spirit and scope of the disclosure. The scope defined by the appended claims shall prevail.

Industrial applicability

The embodiment of the present application provides a data transmission processing method and apparatus, and provides a new TBS design scheme to meet channel coding requirements in a low latency communication system; the target error code rate can be obtained through the first type of control signaling. Low first-pass data performance, try to avoid retransmission of data; when there is error reception, you have to use retransmission, through the second type of control signaling can obtain retransmission data performance with lower target error block rate.

Claims (56)

1. A data transmission processing method is applied to a base station, including:

   Receiving the first type of control signaling fed back by the terminal;

   Transmitting, according to the received first type of control signaling, a third type of control signaling and first transmission data to the terminal;

   Receiving a second type of control signaling fed back by the terminal;

   And if the second type of control signaling indicates that the data is received incorrectly, the retransmission data corresponding to the first transmission data is sent to the terminal.
2. The data transmission processing method according to claim 1, wherein the transport block size TBS' of the first transmission data is an element value in a preset TBS' table, and the preset TBS' table is a two-dimensional table. The row index is the TBS index I _TBS , the column index is the number of resource blocks N _PRB , and the combination of a pair of I _TBS and N _PRB corresponds to one TBS′; wherein the set of row indices I _{TBS is} a set of 0 to Q1, and Q1 is greater than Or an integer equal to 4, the set of column indices N _{PRB is} a subset of the set of natural numbers.
3. The data transmission processing method according to claim 2, wherein said preset TBS' table is determined according to a predetermined rule, and said predetermined rule includes at least one of the following rules:

   Rule one: determining the preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), wherein TBS' is an element of the combination in which the index entry in the preset TBS' table is a combination of I _TBS and N _PRB Value, TBS is an element value in which the index entry in the first TBS table is a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

   Rule 2: In the preset TBS' table, when the row index I _TBS and the column index N _PRB satisfy I _TBS <Function 2 (N _PRB ), the TBS 'value is null; wherein Function 2 (N _PRB ) is N _PRB a second predetermined function of the independent variable;

   Rule 3: If the first transmission data is Turbo coded, all the TBS' values in the preset TBS' table are all interlace lengths supported by the quadratic permutation polynomial QPP interleaver in Turbo coding and at least a subset of the set of two interleaved lengths;

   Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

   Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.
4. The data transmission processing method according to claim 3, wherein said first predetermined function Function1 (TBS) is [(TBS + N _CRC ) / S] - N _CRC + E, wherein [] represents a rounding operation; The rounding operation includes any one of the following: rounding rounding, rounding down, rounding up; S is a real number greater than 1 and less than 14, and N _CRC is the length of the cyclic redundancy check sequence, E is -16 An integer of up to 16.
5. The data transfer processing method according to claim 3, wherein said second predetermined function Function 2 (N _PRB ) is N1 - N _PRB ; N1 is an integer greater than 1.
6. The data transfer processing method according to claim 5, wherein said N1 is any one of the following values: 8, 9, 10, 11, 12.
7. The data transmission processing method according to claim 3, wherein the mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn every integer from 1 to 13, Function 2 (N) _PRB ) takes values of 16, 11, 8, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1 in sequence; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.
8. The data transmission processing method according to claim 3, wherein, in the rule three, if the first transmission data is Turbo coding, the preset TBS' table is larger than that supported by the QPP interleaver in Turbo coding. The set of TBS' values of the maximum interleaving length is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.
9. The data transmission processing method according to claim 1, wherein the first type of control signaling is channel state indication CSI information, and the corresponding target error block rate BLER is equal to A0, and A0 is greater than or equal to 10 ^-4 and less than Or a real number equal to 10 ^-1 .
10. The data transmission processing method according to claim 9, wherein the channel state indication information includes at least one of the following: a channel quality indication CQI, a channel rank indication RI, and a channel precoding matrix indication PMI.
11. The data transmission processing method according to claim 1, wherein the second type of control signaling is used at least to determine a modulation order and a number of resource blocks of the retransmitted data.
12. The data transmission processing method according to claim 11, wherein the target error block rate BLER of the retransmission data corresponding to the second type of control signaling is equal to A1, wherein A1 is greater than or equal to 10 ^-8 , less than or A real number equal to 10 ^-3 .
13. The data transmission processing method according to claim 1, wherein said second type of control signaling includes at least the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ] A state information, Z is an integer greater than or equal to two.
14. The data transmission processing method according to claim 13, wherein in the Z state information sets, ACK indicates that the terminal correctly receives, and NACK ₀ , ..., NACK _(Z-2) indicates terminal error reception.
15. The data transmission processing method according to claim 14, wherein before the transmitting the retransmission data corresponding to the first transmission data to the terminal, the data transmission processing method further includes:

    The base station determines at least one of the following: at least one of the received NACK _i : a modulation order of the retransmitted data, and a number of resource blocks, where i is an integer from 0 to Z-2.
16. The data transfer processing method according to claim 15, wherein said Z is any one of the following values: 4, 8, 16, 32.
17. The data transmission processing method according to claim 1, wherein the third type of control signaling includes at least: downlink control information DCI; the DCI includes at least: a modulation and coding policy MCS index, a transport block size TBS index, and a resource block. Number, resource block location.
18. A data transmission processing method is applied to a terminal, including:

    Transmitting a first type of control signaling to a base station;

    Receiving a third type of control signaling and first transmission data sent by the base station;

    Transmitting a second type of control signaling to the base station;

    If the first transmission data is received incorrectly, retransmission data corresponding to the first transmission data is received.
19. The data transmission processing method according to claim 18, wherein the transport block size TBS index I _TBS and the resource block number N _{PRB are} determined by the third type of control signaling; and the transmission of the first transmission data is obtained according to the preset TBS' table a block size TBS', the preset TBS' table is a two-dimensional table, the row index is a TBS index I _TBS , the column index is the number of resource blocks N _PRB , and a combination of a pair of I _TBS and N _PRB corresponds to one TBS '; The set of row index I _{TBS is} a set of 0 to Q1, Q1 is an integer greater than or equal to 4, and the set of column index N _{PRB is} a subset of the set of natural numbers.
20. The data transmission processing method according to claim 19, wherein said preset TBS' table is determined according to a predetermined rule, and said predetermined rule includes at least one of the following rules:

    Rule 1: Determine a preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), where TBS' is an element value of a combination of I _TBS and N _PRB in the preset TBS' table, and TBS is The index entry in the first TBS table is an element value of a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

    Rule 2: In the preset TBS' table, when I _TBS <Function2(N _PRB ) is satisfied, the TBS' value is null; wherein Function 2 (N _PRB ) is a second predetermined function with N _PRB as an independent variable;

    Rule 3: If the first transmission data is Turbo coded, the set of all TBS' values in the preset TBS' table is the interleave length supported by the quadratic permutation polynomial QPP interleaver in Turbo coding and at least 2 a subset of the set of interleaved lengths;

    Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

    Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.
21. The data transmission processing method according to claim 20, wherein said first predetermined function Function1 (TBS) is [(TBS + N _CRC ) / S] - N _CRC + E, wherein [] represents a rounding operation; The rounding operation includes any one of the following: rounding rounding, rounding down, rounding up; S is a real number greater than 1 and less than 14, and N _CRC is the length of the cyclic redundancy check sequence, E is -16 An integer of up to 16.
22. The data transfer processing method according to claim 20, wherein said second predetermined function Function 2 (N _PRB ) is N1 - N _PRB , and N1 is any one of the following values: 8, 9, 10, 11, 12; or The mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn of each integer from 1 to 13, Function 2 (N _PRB ) takes values of 16, 11, 8, 6, and 5, 4, 3, 3, 2, 2, 1, 1, 1; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.
23. The data transmission processing method according to claim 20, wherein in the rule three, If the first transmission data is Turbo coded, the TBS' value in the preset TBS' table is larger than the maximum interleave length supported by the QPP interleaver in the Turbo code, and the set is the at least two interlaces supported in the QPP interleaver. A subset of the set of lengths.
24. The data transmission processing method according to claim 18, wherein the first type of control signaling is channel state indication CSI information, and the corresponding target error block rate BLER is equal to A0, wherein A0 is greater than or equal to 10 ^-4 a real number less than or equal to 10 ^-1 ; the channel state indication information includes at least one of the following information: a channel quality indication CQI, a channel rank indication RI, and a channel precoding matrix indication PMI.
25. The data transmission processing method according to claim 18, wherein said second type of control signaling is used at least to determine a modulation order and a number of resource blocks of the retransmitted data.
26. The data transmission processing method according to claim 25, wherein the target error block rate BLER of the retransmission data corresponding to the second type of control signaling is equal to A1, wherein A1 is greater than or equal to 10 ^-8 , less than or A real number equal to 10 ^-3 .
27. The data transmission processing method according to claim 18, wherein said second type of control signaling includes at least the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., NACK _(Z-2) ] A state information, Z is an integer greater than or equal to two.
28. The data transmission processing method according to claim 27, wherein, among said Z state information sets, ACK indicates that the terminal correctly receives, and NACK ₀ , ..., NACK _(Z-2) indicates terminal error reception.
29. The data transmission processing method according to claim 28, wherein the NACK _i information is used to indicate at least one of: a modulation order of retransmitting data, a number of resource blocks, where i is an integer from 0 to Z-2, The Z is any of the following values: 4, 8, 16, 32.
30. The data transmission processing method according to claim 18, wherein the third type of control signaling includes at least: downlink control information DCI; the DCI includes at least: a modulation and coding policy MCS index, a transport block size TBS index, and a resource block. Number, resource block location.
31. A data transmission processing device is applied to a base station, including:

    The first receiving module is configured to receive the first type of control signaling fed back by the terminal;

    a first transmission data sending module, configured to send according to the received first type of control signaling The terminal sends the third type of control signaling and the first transmission data;

    The second receiving module is configured to receive the second type of control signaling fed back by the terminal;

    The retransmission data sending module is configured to: if the second type of control signaling indicates that the data is received incorrectly, send retransmission data corresponding to the first transmission data to the terminal.
32. The data transmission processing device according to claim 31, wherein the transport block size TBS' of the first transmission data sent by the first transmission data transmitting module is an element value in a preset TBS' table, the pre- Let the TBS' table be a two-dimensional table, the row index is the TBS index I _TBS , the column index is the number of resource blocks N _PRB , and the combination of a pair of I _TBS and N _PRB corresponds to one TBS '; wherein the set of row indexes I _TBS is A set of 0 to Q1, Q1 is an integer greater than or equal to 4, and a set of column indices N _{PRB is} a subset of the set of natural numbers.
33. The data transfer processing device according to claim 32, wherein said preset TBS' table is determined according to a predetermined rule, and said predetermined rule includes at least one of the following rules:

    Rule one: determining the preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), wherein TBS' is an element of the combination in which the index entry in the preset TBS' table is a combination of I _TBS and N _PRB Value, TBS is an element value in which the index entry in the first TBS table is a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

    Rule 2: In the preset TBS' table, when the row index I _TBS and the column index N _PRB satisfy I _TBS <Function 2 (N _PRB ), the TBS 'value is null; wherein Function 2 (N _PRB ) is N _PRB a second predetermined function of the independent variable;

    Rule 3: If the first transmission data is Turbo coded, all the TBS' values in the preset TBS' table are all interlace lengths supported by the quadratic permutation polynomial QPP interleaver in Turbo coding and at least a subset of the set of two interleaved lengths;

    Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

    Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.
34. The data transfer processing device according to claim 33, wherein said first predetermined function Function1 (TBS) is [(TBS + N _CRC ) / S] - N _CRC + E, wherein [] represents a rounding operation; The rounding operation includes any one of the following: rounding rounding, rounding down, rounding up; S is a real number greater than 1 and less than 14, and N _CRC is the length of the cyclic redundancy check sequence, E is -16 An integer of up to 16.
35. The data transfer processing device according to claim 33, wherein said second predetermined function Function 2 (N _PRB ) is N1 - N _PRB , and N1 is any one of the following values: 8, 9, 10, 11, 12; or The mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn of each integer from 1 to 13, Function 2 (N _PRB ) takes values of 16, 11, 8, 6, and 5, 4, 3, 3, 2, 2, 1, 1, 1; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.
36. The data transmission processing device according to claim 33, wherein, in the rule three, if the first transmission data is Turbo coded, the preset TBS' table is larger than that supported in the QPP interleaver in Turbo coding. The set of TBS' values of the maximum interleaving length is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.
37. The data transmission processing device according to claim 31, wherein the first type of control signaling received by the first receiving module is channel state indication CSI information, and the corresponding target error block rate BLER is equal to A0, A0. Is a real number greater than or equal to 10 ^-4 and less than or equal to 10 ^-1 ; the channel state indication information includes at least one of the following information: a channel quality indication CQI, a channel rank indication RI, and a channel precoding matrix indication PMI.
38. The data transmission processing device according to claim 31, wherein the second type of control signaling received by the second receiving module is used to determine at least a modulation order and a number of resource blocks of the retransmitted data.
39. The data transmission processing device according to claim 38, wherein the target error block rate BLER of the retransmission data corresponding to the second type of control signaling received by the second receiving module is equal to A1, wherein A1 is A real number greater than or equal to 10 ^-8 and less than or equal to 10 ^-3 .
40. The data transmission processing device according to claim 31, wherein said second type of control signaling received by said second receiving module includes at least the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., A state information in NACK _(Z-2) ], Z is an integer greater than or equal to 2.
41. The data transmission processing device according to claim 40, wherein, among said Z state information sets, ACK indicates that the terminal correctly receives, and NACK ₀ , ..., NACK _(Z-2) indicates terminal error reception.
42. The data transmission processing device according to claim 41, wherein said NACK _i information is at least used to indicate at least one of: a modulation order of retransmitted data, a number of resource blocks, wherein i is 0 to Z-2 An integer, the Z being any of the following values: 4, 8, 16, 32.
43. The data transmission processing device according to claim 1, wherein the third type of control signaling includes at least: downlink control information DCI; the DCI includes at least: a modulation and coding policy MCS index, a transport block size TBS index, and a resource block. Number, resource block location.
44. A data transmission processing device is applied to a terminal, including:

    The first sending module is configured to send the first type of control signaling to the base station;

    The first data receiving module is configured to receive the third type of control signaling and the first transmission data sent by the base station;

    a second sending module, configured to send a second type of control signaling to the base station;

    The retransmission data receiving module is configured to receive retransmission data corresponding to the first transmission data if the first transmission data is received incorrectly.
45. The data transmission processing device according to claim 44, wherein a transport block size TBS index I _TBS and a resource block number N _{PRB are} determined by said third type of control signaling; and said first pass data is obtained according to a preset TBS' table The transport block size TBS' of the first transmission data received by the receiving module; the preset TBS' table is a two-dimensional table, the row index is the TBS index I _TBS , the column index is the number of resource blocks N _PRB , a pair of I _TBS and The combination of N _PRBs corresponds to one TBS'; wherein the set of row indices I _{TBS is} a set of 0 to Q1, Q1 is an integer greater than or equal to 4, and the set of column indices N _{PRB is} a subset of the set of natural numbers.
46. The data transfer processing device according to claim 45, wherein said preset TBS' table is determined according to a predetermined rule, and said predetermined rule includes at least one of the following rules:

    Rule 1: Determine a preset TBS' table according to the first TBS table, TBS' is equal to Function1 (TBS), where TBS' is an element value of a combination of I _TBS and N _PRB in the preset TBS' table, and TBS is The index entry in the first TBS table is an element value of a combination of I _TBS and N _PRB , and Function 1 (TBS) is a first predetermined function with TBS as an independent variable;

    Rule 2: In the preset TBS' table, when I _TBS <Function2(N _PRB ) is satisfied, the TBS' value is null; wherein Function 2 (N _PRB ) is a second predetermined function with N _PRB as an independent variable;

    Rule 3: If the first transmission data is Turbo coded, the preset TBS' table, the set of all TBS' values is the interleaving length and at least 2 interlaces supported in the quadratic permutation polynomial QPP interleaver in Turbo coding. a subset of the set of lengths;

    Rule 4: In the preset TBS' table, any TBS' value satisfies the relationship: (TBS' + N _CRC ) / (N _PRE × Q _m ) ≤ B1, where B1 is greater than or equal to 0.9 and less than 1. Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles;

    Rule 5: In the preset TBS' table, any TBS' value satisfies the relationship: B0 ≤ (TBS' + N _CRC ) / (N _PRE × Q _m ), where B0 is greater than or equal to 0.05 and less than 0.2 Real number, N _CRC is the length of the cyclic redundancy check sequence, Q _m is the modulation order, and N _PRE is the number of resource particles.
47. The data transfer processing device according to claim 46, wherein said first predetermined function Function1 (TBS) is [(TBS + N _CRC ) / S] - N _CRC + E, wherein [] represents a rounding operation; The rounding operation includes any one of the following: rounding rounding, rounding down, rounding up; S is a real number greater than 1 and less than 14, and N _CRC is the length of the cyclic redundancy check sequence, E is -16 An integer of up to 16.
48. The data transfer processing device according to claim 46, wherein said second predetermined function Function 2 (N _PRB ) is N1 - N _PRB , and N1 is any one of the following values: 8, 9, 10, 11, 12; The mapping relationship between the second predetermined function Function 2 (N _PRB ) and N _PRB is as follows: When N _{PRB is} in turn of each integer from 1 to 13, Function 2 (N _PRB ) takes values of 16, 11, 8, 6, and 5, 4, 3, 3, 2, 2, 1, 1, 1; when N _PRB > 13, Function 2 (N _PRB ) is equal to 0.
49. The data transmission processing device according to claim 46, wherein, in the rule three, if the first transmission data is Turbo coded, the preset TBS' table is larger than the maximum interlace supported in the QPP interleaver in Turbo coding. The set of length TBS' values is a subset of the set of at least two interleaving lengths supported in the QPP interleaver.
50. The data transmission processing device according to claim 44, wherein the first type of control signaling sent by the first sending module is channel state indicating CSI information, and the corresponding target error block rate BLER is equal to A0, A0. Is a real number greater than or equal to 10 ^-4 and less than or equal to 10 ^-1 ; the channel state indication information includes at least one of the following information: a channel quality indication CQI, a channel rank indication RI, and a channel precoding matrix indication PMI.
51. The data transmission processing device according to claim 44, wherein the second type of control signaling sent by the second sending module is used to determine at least a modulation order and a number of resource blocks of the retransmitted data.
52. The data transmission processing device according to claim 51, wherein the target error block rate BLER of the retransmission data corresponding to the second type of control signaling sent by the second transmission module is equal to A1, and A1 is greater than or A real number equal to 10 ^-8 and less than or equal to 10 ^-3 .
53. The data transmission processing device according to claim 44, wherein the second type of control signaling sent by the second transmitting module includes at least the following Z state information sets [ACK, NACK ₀ , NACK ₁ , ..., A state information in NACK _(Z-2) ], Z is an integer greater than or equal to 2.
54. The data transmission processing device according to claim 53, wherein, in said Z state information sets, ACK indicates that the terminal is correctly received, and NACK ₀ , ..., NACK _(Z-2) indicates terminal error reception.
55. The data transmission processing device according to claim 54, wherein the NACK _i information is at least used to indicate at least one of: a modulation order of the retransmission data, a number of resource blocks, where i is an integer from 0 to Z-2, The Z is any of the following values: 4, 8, 16, 32.
56. The data transmission processing device according to claim 44, wherein the third type of control signaling includes at least: downlink control information DCI; the DCI includes at least: a modulation and coding policy MCS index, a transport block size TBS index, and a resource block. Number, resource block location.

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