WO2014146507A1

WO2014146507A1 - Communication method and device on nct carrier

Info

Publication number: WO2014146507A1
Application number: PCT/CN2014/070942
Authority: WO
Inventors: 司倩倩; 林亚男
Original assignee: 电信科学技术研究院
Priority date: 2013-03-22
Filing date: 2014-01-21
Publication date: 2014-09-25
Also published as: CN104065605B; CN104065605A

Abstract

Disclosed are a communication method and device on a new carrier type (NCT) carrier. The method comprises: when I_MCS corresponding to a scheduled TB is greater than 28, determining corresponding I_TBS and a modulation level according to a correspondence among I_MCS,the modulation level, and I_TBS; searching for a correspondence among I_TBS,the size of a PRB, and a TBS according to I_TBS and the size of the PRB corresponding to the TB, and determining a TBS, so as to transmit data according to the determined TBS and the modulation level. The TBS in the correspondence is a TBS, among TBSs determined according to the existing protocol, that is not greater than a target TBS determined according to the size of the PRB in the correspondence and a target rate of the NCT carrier corresponding to I_TBS, and has the value nearest to that of the target TBS; the target rate is greater than a rate of I_MCS when I_MCS in a non-NCT carrier is equal to 25. In this way, the resources on the NCT carrier can be fully utilized and the peak rate can be improved.

Description

Communication method and device on carrier of new carrier type The present application claims to be submitted to the Chinese Patent Office on March 22, 201, the application number is 201 31 00951 82.0, and the invention name is "a communication method on a carrier of a new carrier type" The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference. Technical field

The present invention relates to the field of communications technologies, and in particular, to a communication method and apparatus on a carrier of a new carrier type. Background technique

In Long Term Evolution (LTE) Release 11 (Rel-11) and earlier versions, the Physical Downlink Control Channel (PDCCH) passes the first N orthogonal frequency division multiplexing of one downlink subframe ( Orthogonal Frequency Division Multiplexing, OFDM) symbol transmission. Where N is likely to be 1, 2, 3, 4, and N = 4 is only allowed in systems with a system bandwidth of 1.4 megahertz (MHz). Cell-specific Reference Signals (CRS) are transmitted in all downlink subframes supporting Physical Downlink Shared Channel (PDSCH) transmission. The system can support single-antenna port transmission (Ρ.), two antennas. Port transmission (PQ, Pi) or four antenna port transmission (PQ, PI, P ₂ , P ₃ ).

In order to reduce the system overhead, a new carrier type (NCT) is defined in LTE Rel-12, and the traditional PDCCH is not transmitted in the carrier, that is, the LTE Rel-11 and the previous version pass the downlink subframe. PDCCH transmitted by N OFDM symbols. Data demodulation is performed within the carrier based on UE-specific reference signals (URS). The CRS does not transmit or occupies one subframe transmission every 5 milliseconds (ms) and only supports single antenna port transmission (Po).

Currently, the PDSCH transmitted on the non-NCT carrier supports a 32-level Modulation and Coding Scheme (MCS), as shown in Table 1.

Table 1 :

The user equipment determines according to the received index value of the modulation coding level/ _MCS , and determines the number of physical resource blocks (PRBs) used by the current downlink transmission, DJ, _TBS i: I _TBS and NPRB. The Transport Block Size (TSB) table determines the TBS of the current downlink data transmission.

The traditional PDCCH is not transmitted in the NCT carrier, and the CRS is not transmitted or transmitted in a small amount, and the system overhead is low. Therefore, the number of resource elements (Resource Element, RE) that can be used for transmitting data on the NCT carrier is more. If the TBS is still determined on the NCT carrier by the same method as the non-NCT carrier, the original highest code rate cannot be achieved (the code rate is reduced by about 3 MCS levels), and the resources on the NCT cannot be fully utilized, resulting in NCT. The peak rate is low. Summary of the invention

It is an object of the present invention to provide a communication method and apparatus on an NCT carrier to solve the problem that the TBS caused by the existing method on the NCT causes the peak rate of the NCT to be low and the NCT resources cannot be fully utilized.

The object of the invention is achieved by the following technical solutions:

- A method of communication on an NCT carrier, comprising:

Receiving downlink control signaling of the scheduling transport block, where the downlink control signaling indicates an index value of the modulation coding level MCS corresponding to the transport block/ _MCS and a physical resource block size corresponding to the transport block;

When the corresponding _{MCS is} greater than 28, the I _TBS and the modulation level corresponding to the transport block are determined according to a correspondence between the / _MC , the modulation level, and the transport block size index/Ώ4⁄4;

Determining, according to the physical resource block size corresponding to the transport block corresponding to the transport block, a correspondence between a physical resource block size and a transport block size, and determining a transport block size of the transport block, so as to be determined according to the determined The transport block size and the modulation level transmit data; wherein, the transport block size in the correspondence between the physical resource block size and the transport block size is a transport block size set determined by the Long Term Evolution version 8 protocol a transport block size that is not greater than a target transport block size and is closest to the target transport block size; the target transport block size is determined by a physical resource block size and a target code rate of an NCT carrier corresponding to the Ώ3⁄4; The target code rate of the NCT carrier is greater than the code rate corresponding to when the / _MCS is 25 in the non-NCT carrier.

A communication method on an NCT carrier, comprising:

Determining an index value/ _{MC of} a modulation coding level corresponding to the transmission block to be scheduled, where the value of the / _MCS is greater than 28; sending, to the user equipment, downlink control signaling for scheduling the transport block, where the downlink control signaling indicates And corresponding to the physical resource block size corresponding to the _MCS and the transport block, so that the user equipment determines the transport block according to a correspondence between the / _MCS , the modulation level, and the transport block size index/Ώ4⁄4 Corresponding /Ώ3⁄4 and modulation level, and according to the physical resource block size corresponding to the transport block corresponding to the transport block, check the correspondence between the physical resource block size and the transport block size, and determine the transmission a transport block size of the block; wherein, the transport block size in the correspondence between the physical resource block size and the transport block size is a transport block size set determined by the Long Term Evolution version 8 protocol, not larger than the target transport block a transport block size that is the closest in size to the target transport block size; the target transport block size is based on the physical resource block size and/or the corresponding NCT carrier The target code rate is determined; the target code rate of the NCT carrier is greater than the code rate corresponding to the non-NCT carrier/ _MCS is 25.

A user equipment, applied to an NCT carrier, includes:

a storage module, configured to save a correspondence between the _MC /modulation level and the transport block size index, and save a correspondence between the I _TBS physical resource block size and the transport block size;

a control signaling receiving module, configured to receive downlink control signaling of the scheduled transport block, where the downlink control signaling indicates An index value I _MCS of the modulation coding level corresponding to the transport block and a physical resource block size corresponding to the transport block; a transport block size index determining module, configured to: when the corresponding _{MCS of} the transport block is greater than 28, according to / Corresponding relationship between the _MC , the modulation level and the transport block size index/^^, determining the /H3⁄4 and the modulation level corresponding to the transport block; and the transport block size determining module, according to the /? And a physical resource block size corresponding to the transport block, a correspondence between the physical resource block size and the transport block size, determining a transport block size of the transport block, so as to be determined according to the determined transport block size And a modulation level transmission data; wherein, the transport block size in the correspondence between the / _{、, the} physical resource block size, and the transport block size is a transport block size set determined by the Long Term Evolution version 8 protocol, not greater than the target transmission a block size and a transport block size closest to the target transport block size; the target transport block size is based on a physical resource block size and/or a corresponding NCT Determining a target code rate; the NCT carrier rate than the non-target carrier NCT / _MCS 25 when the corresponding bit rate.

A network device applied to an NCT carrier, including:

a storage module, configured to store a correspondence between the / _MC , the modulation level, and the transport block size index, and save a correspondence between the I _TBS , the physical resource block size, and the transport block size;

a modulation coding level determining module, configured to determine an index value I of the modulation coding level corresponding to the transmission block to be scheduled, and the value of the _MCS is greater than 28;

a control signaling sending module, configured to send, to the user equipment, downlink control signaling that schedules the transport block, where the downlink control signaling indicates a size of a physical resource block corresponding to the _MCS and the transport block, so that Determining, by the user equipment, the /Ώ3⁄4 and the modulation level corresponding to the transport block according to the correspondence between the /MCS, the modulation level, and the transport block size index/Ώ, and according to the /?^ of the transport block The physical resource block size corresponding to the transport block, the correspondence between the I _TBS , the physical resource block size, and the transport block size is determined, and the transport block size of the transport block is determined; wherein the I _TBS and the physical resource block are The transport block size in the correspondence between the size and the transport block size is a transport block in the transport block size set determined by the Long Term Evolution version 8 protocol, not larger than the target transport block size and closest to the target transport block size. a size; the target transport block size is determined according to a physical resource block size and a target code rate of the corresponding NCT carrier; the target code rate of the NCT carrier is greater than a non-NCT carrier Medium I _MCS is the corresponding code rate at 25 o'clock.

If the TBS is still determined on the NCT carrier by the same method as the non-NCT carrier, the highest code rate that can be achieved in the communication process does not exceed the code rate when the non-NCT carrier/ _MCS value is 25. In the embodiment of the present invention, the TBS is extended, and the correspondence between the _ras , the physical resource block size, and the TBS is determined based on the target code rate that is greater than the code rate corresponding to the non-NCT carrier/ _MCS is 25. When the value of the relationship/ _{MCS is} greater than 28, under the same physical resource block size, the TBS is larger than the TBS specified in the existing protocol, and the code rate in the communication process can be larger than the code rate corresponding to the non-NCT/ _MCS is 25. Therefore, the embodiment of the present invention can fully utilize the resources on the NCT as compared with the TBS determined by the same method as the non-NCT carrier. In addition, the embodiment of the present invention uses the same physical resource. Under the block size condition, the code rate during communication can be improved, thereby increasing the peak rate. DRAWINGS

FIG. 1 is a flowchart of a UE side method according to an embodiment of the present invention;

2 is a flowchart of a method for a network device side according to an embodiment of the present invention;

FIG. 3 is a flowchart of an implementation method according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a UE according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of another UE according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another network device according to an embodiment of the present invention. detailed description

In the embodiment of the present invention, the TBS is extended, based on a target code rate that is greater than a code rate corresponding to an I _MCS of 25 in a non-NCT carrier, a predetermined correspondence value of /7^, a physical resource block size, and a TBS. When the / _MCS value is greater than 28, the TBS is larger than the TBS specified in the existing protocol under the same physical resource block size. In the communication process, the UE side determines, according to the received indication of the Downlink Control Information (DCI), that the I _B cs corresponding to the scheduled transport block ( TB ) is greater than 28, according to the value greater than 28 I _MCS correspondence relationship I _TBS and determining that the TB corresponding I _TBS, before ranking physical resource block size of the TB corresponding to the TB corresponding to I _TBS DCI indicated, Charles I I _TBS, physical resource block size, and The correspondence relationship of the TBS determines the TBS of the TB to transmit data according to the determined TB S. Therefore, compared with the TB S determined by the same method as the non-NCT carrier, the embodiment of the present invention can fully utilize the resources on the NCT; and, in the embodiment of the present invention, under the condition of the same physical resource block size, It can improve the code rate during communication, thereby increasing the peak rate.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 , an embodiment of the present invention provides a communication method on an NCT carrier on a UE side, and the implementation manner thereof specifically includes the following operations:

Step 100: Receive a DCI that schedules a TB.

The DCI indicates the physical resource block size corresponding to the scheduled TB/ _MCS and the scheduled TB.

Step 110: When the I _MCS corresponding to the TB is greater than 28, determine the I _TBS and the modulation level corresponding to the TB according to the correspondence between the I _MCS , the modulation level, and /H3⁄4.

The TB may be the first transmission or the retransmission. Specifically, the TB is determined to be a primary transmission or a retransmission according to an indication of a new Data Indicator (DI) corresponding to the TB in the DCI. The I _MCS corresponding to the TB may be determined according to a value indicated by the MCS information field corresponding to the TB in the DCI.

When the DCI indicates that the / _MCS corresponding to the TB is 0 to 28, the TB S may be determined according to the implementation manner on the non-NCT carrier, thereby ensuring the peak rate on the NCT carrier.

Step 120, based on the corresponding TB / ^^ and TB size of the physical resource blocks indicated in the corresponding DCI, find I _TBS, the corresponding relationship between the physical resource block size and TBS, TBS is determined that TB, is determined according to The TBS and modulation levels transfer data.

The physical resource block size refers to the number of PRBs used to transmit the TB.

The TBS in the correspondence between the ITBS, the physical resource block size, and the TBS is the TBS in the TBS set determined by the LTE Rel8 protocol, which is not larger than the target TBS and closest to the target TBS.

The target TBS #> is determined according to the physical resource block size and the target code rate of the corresponding NCT carrier. The target code rate of the NCT carrier is greater than the code rate corresponding to the IMCS of the non-NCT carrier.

In the embodiment of the present invention, the correspondence between the / _MCS and the modulation level and the value greater than the value is predetermined. Preferably, the correspondence may be described as follows: a value of 29/ _MCS corresponding to a value of 27/^^ and a modulation level of 6; a value of 30/ _MCS corresponding to a value of 28 /^^ and the modulation level with a value of 6; the value of 31/ _MCS corresponds to a value of 29 /^^ and a modulation level of 6. When the value of the / _MCS is greater than 31, the I _TBS corresponding to the / _MCS can be incremented based on the value of / _MCS corresponding / Ώ 3⁄4, and the corresponding modulation level is still 6, which is not described in the present invention. The correspondence can be expressed in the form of a table, as shown in Table 2.

Table 2:

The correspondence shown in Table 2 is just an example. As long as the value is greater than 28 / _MCS corresponding / H¾ Table 1 greater than the largest I _TBS (i.e. 26), and the value of greater than 28 / _MCS corresponding / Ώ¾ can vary.

Taking Table 2 as an example, when the value is 27 (and the I _MCS corresponding to the above ΤΒ is 29), the target code rate of the NCT carrier is approximately equal to or greater than the code rate corresponding to the I _MCS of 26 in the non-NCT carrier; When the value of /H3⁄4 is 28, the target bit rate of the NCT carrier is approximately equal to or greater than the code rate corresponding to the non-NCT carrier/ _MCS of 27; when the value of /H3⁄4 is 29, the target bit rate of the NCT carrier is taken. The value is approximately or greater than the code rate corresponding to the non-NCT carrier/ _MCS of 28. Preferably, when the value of /H3⁄4 is 27, the target code rate of the NCT carrier is a code rate corresponding to the non-NCT carrier/ _MCS is 26; when the _TBS value is 28, the target code rate of the NCT carrier is a non-NCT carrier. Medium I _MCS is the corresponding code rate at 27 o'clock; /^^ value At 27 o'clock, the target code rate of the NCT carrier is the code rate corresponding to when the / _MCS is 28 in the non-NCT carrier. That is, the value of /^^ is

At 27 o'clock, CR = _{0 85} 253906, /^^ takes a value of 28, CR = _{0 88867188} , and when 29, CR = 0.92578125.

It should be noted that the above preferred target code rate values are not limited to the embodiments of the present invention. When the technical solution provided by the embodiment of the present invention is applied, the NCT carrier is ensured only when the target code rate of the NCT carrier is greater than the code rate corresponding to the non-NCT carrier/ _MCS is 25, and the I _MCS corresponding to the TB is 29, 30, and 31. The target bit rate is different.

Based on any of the foregoing UE side method embodiments, preferably, the correspondence between the I _TBS , the physical resource block size, and the TBS is predetermined. Correspondingly, the UE may determine the target TBS only by the physical resource block size and the target code rate of the NCT carrier corresponding to the PDCCH; and find the TBS set determined by the LET Rel 8 protocol, not greater than the target TBS and the value of the target TBS. The closest transport block size; determining the found TBS, determining the correspondence between the physical resource block size used by the target TBS and the I _TBS .

Based on any of the foregoing UE side method embodiments, preferably, the target TBS is determined according to the physical resource block size and the target code rate of the NCT carrier corresponding to the I _TBS according to the following formula:

TBS _taget = N _PRB xN _RE xQ _m xCR-CRC In the above formula, it is the target TBS; is the physical resource block size ranging from 1 to 110; ^N is the number of available resource elements (RE) in a PRB, ^>120; for the modulation level, the value is 6; CR is the target bit rate of the NCT carrier; CRC is the number of check bits. Wherein, the CRC includes a CRC and a code block (Code Block,

CB) CRC (each CRC is 24 in length). The value of CB CRC ^{NPRB N} RE Qm ^CR is determined.

That is, the corresponding target TBS is determined according to the available resources, the modulation scheme, and the target code rate on the NCT carrier. The value of the target TBS has a multiple relationship with the available resources N _PRB , NRE ), the modulation mode (ie), and the target code rate on the NCT carrier.

The extended TBS specified in the agreement or the pre-agreed extended TBS can be achieved according to the above formula

TBS is determined. Specifically, in the correspondence table of / _ras , the physical resource block size, and the transport block size determined by the LTE Rel8 protocol, look for a TBS that is not larger than the target TBS and is closest to the target TBS, and the TBS and the foregoing determined target.

The correspondence between the physical resource block size used by the TBS and the /H3⁄4 corresponding to the target code rate is the correspondence between the I _TBS , the physical resource block size, and the TBS used in the above embodiment of the present invention. Preferably, the value of A ^ is 156, or the value of A ^ is 144. When the value is 156, the Demodulation Reference Signal (DMRS) is transmitted corresponding to 1~2 antenna ports. ^Nre When the value is 144, the DMRS is transmitted corresponding to 4/8 antenna ports. Correspondingly, if the value of ^Λ ^ is 156, and the value of the target code rate on the NCT carrier is the above preferred case, the correspondence between the /H3⁄4, the physical resource block size, and the TBS determined in the above manner is as shown in Table 3. Show. If the value of ^Λ ^ 144, and the target code rate NCT carrier value of the above-described preferred case, determined in the manner described above / H¾, physical resource block size, TBS correspondence relation as shown in Table 4.

table 3:

■0S9 / 0Z OAV 41 42 43 44 45 46 47 48 49 50

27 29296 30576 30576 31704 32856 32856 34008 35160 35160 35160

28 30576 31704 31704 32856 34008 34008 35160 35160 36696 37888

29 31704 32856 34008 34008 35160 35160 36696 37888 37888 39232

51 52 53 54 55 56 57 58 59 60

27 36696 37888 37888 39232 39232 40576 40576 42368 42368 43816

28 37888 39232 39232 40576 40576 42368 42368 43816 43816 45352

29 40576 40576 40576 42368 42368 43816 45352 45352 46888 46888

61 62 63 64 65 66 67 68 69 70

27 43816 45352 45352 46888 46888 46888 48936 48936 48936 51024

28 45352 46888 46888 46888 48936 48936 51024 51024 51024 52752

29 46888 48936 48936 48936 51024 51024 52752 52752 52752 55056

71 72 73 74 75 76 77 78 79 80

27 51024 52752 52752 52752 52752 55056 55056 55056 57336 57336

28 52752 52752 55056 55056 55056 57336 57336 59256 59256 59256

29 55056 55056 57336 57336 59256 59256 59256 61664 61664 61664

81 82 83 84 85 86 87 88 89 90

27 59256 59256 59256 59256 61664 61664 63776 63776 63776 63776

28 61664 61664 61664 63776 63776 63776 63776 66592 66592 66592

29 63776 63776 63776 66592 66592 66592 68808 68808 68808 71112

91 92 93 94 95 96 97 98 99 100

27 66592 66592 66592 68808 68808 68808 71112 71112 71112 71112

28 68808 68808 68808 71112 71112 71112 73712 73712 75376 75376

29 71112 71112 73712 73712 75376 75376 75376 75376 75376 75376

101 102 103 104 105 106 107 108 109 110

27 73712 73712 75376 75376 75376 75376 75376 75376 75376 75376

28 75376 75376 75376 75376 75376 75376 75376 75376 75376 75376

29 75376 753,767,537,675,376 753,767,537,675,376 753,767,537,675,376 any preceding embodiment based on the UE side, the above-described determined according to an instruction of DCI TB retransmission of the TB and I _MCS corresponding to 29, 30 or 31, according to the above embodiment except For example, the TBS is determined. In another preferred implementation manner, the TBS determined when the TB is last scheduled is determined to be a TBS when the TB is retransmitted. In particular, if the transmission of the TB is a semi-persistent scheduling transmission, the TBS at the time of retransmission depends on the TBS determined by the last semi-persistent scheduling.

As shown in FIG. 2, the embodiment of the present invention provides a communication method on an NCT carrier on a network device side. The actual implementation manner includes the following operations:

Step 200: Determine that the value of the 1 _MCS corresponding to the TB to be scheduled is greater than 28. Step 210: Send a DCI that schedules the TB to the UE.

The TB can be either a first pass or a retransmission.

In the DCI, the I _MCS corresponding to the TB and the physical resource block size corresponding to the TB are indicated, so that the UE determines the corresponding Η3⁄4 and the modulation level according to the correspondence between the I _MCS , the modulation level, and /τ ^ and based on the _TBS and the I ΤΒ corresponding physical resource blocks corresponding to the size of the TB to find the I _TBS, the corresponding relationship between the physical resource block size and TBS, TBS is determined that the TB. The TBS in the correspondence between the I _TBS , the physical resource block size, and the TBS is a TBS that is not larger than the target TBS and closest to the target TBS in the TBS set determined by the LTE Rel8 protocol. The target TBS is determined by the physical resource block size in the correspondence and the target code rate of the NCT carrier corresponding to the Ώ3⁄4. The target code rate of the NCT carrier is larger than the code rate corresponding to when the / _MCS is 25 in the non-NCT carrier.

In the embodiments of the network device, there is an implementation similar to the UE side method embodiment, and details are not described herein. In the embodiment of the present invention, the correspondence between I _MCS , the number of modulation stages, and /H3⁄4 is predetermined. Preferably, the correspondence may be described as follows: a value of 29/ _MCS corresponding to a value of 27/^^ and a modulation level of 6; a value of 30/ _MCS corresponding to a value of 28 /^^ and the modulation level with a value of 6; the value of 31/ _MCS corresponds to a value of 29 /^^ and a modulation level of 6. The correspondence can be expressed in the form of a table, as shown in Table 2 above.

Preferably, when the value of /H3⁄4 is 27, the target code rate of the NCT carrier is a code rate corresponding to the case where the I _MCS is 26 in the non-NCT carrier;

When the value of Ώ3⁄4 is 28, the target code rate of the NCT carrier is a code rate corresponding to a non-NCT carrier/ _MCS of 27;

When the value of Ώ3⁄4 is 29, the target code rate of the NCT carrier is a code rate corresponding to when the / _MCS is 28 in the non-NCT carrier.

Based on the foregoing network device side method embodiment, preferably, the correspondence between the I _TBS , the physical resource block size, and the TBS is predetermined. Correspondingly, the network device may further determine the target TBS according to the physical resource block size and the target code rate of the NCT carrier corresponding to the H3⁄4; and find the TBS set determined by the LET Rel 8 protocol, not greater than the target TBS and the value of the target TBS The closest transport block size; determine the TBS found, determine the physical resource block size used by the target TBS, and the correspondence between //3⁄4.

Based on any of the foregoing network device side method embodiments, preferably, the target TBS is determined according to the physical resource block size and the target code rate of the corresponding NCT carrier according to the following formula:

TBS _taget = N _PRB xN _RE xQ _m xCR-CRC Preferably, the value of ⁷ ^ ^ is 156, or the value of ^Λ ^ is 144.

On the network device side, first determine the physical resource block size allocated for the UE scheduling TB, select an appropriate / _MCS , and then determine the TBS by referring to the UE side method; or determine the TBS first, select the appropriate / _MCS , and then determine The terminal schedules the physical resource block size allocated by the TB.

When / _M cs value of 29, 30 or 31, if the first determined TBS, and then determine the physical resource blocks UE scheduling TB size distribution, specific implementations may be, but are not limited to: The selection / _MCS by looking I _MCS The correspondence relationship with the I _TBS determines the physical resource block size according to the determined correspondence between the TBS and the lookup/request, the physical resource block size, and the transport block size.

On the network device side, in order to transmit ΤΒ, it is also necessary to determine the number of modulation levels it uses. For the specific determination manner, refer to the description of the foregoing UE side method, and details are not described herein again.

In another preferred implementation manner, the network device determines that the network device is scheduled last time, when the foregoing device is retransmitted, and the TBS is determined according to the manner provided by the foregoing embodiment. The TBS is determined to be the TBS when the ΤΒ is retransmitted.

The method provided by the embodiment of the present invention is described in detail below by taking the implementation of the UE side and the network device side on the NCT carrier as an example. In this embodiment, TBS is determined using Tables 2 and 3 above. As shown in FIG. 3, this embodiment includes the following operations:

Step 300: The network device determines whether the TB scheduled by the UE is an initial transmission or a retransmission, and determines an I _MCS and a physical resource block size corresponding to the TB.

In this embodiment, the physical resource block size may be determined first, then the TBS may be determined, or the TBS may be determined first, and then the physical resource block size may be determined.

In this embodiment, it is assumed that the value of / _MCS is 29, 30, or 31.

Step 310: The network device sends a DCI to the UE by using a PDCCH or an enhanced PDCCH (EPDCCH), where the TB indicated by the UE in the DCI is an initial transmission or a retransmission, and indicates a TB corresponding to the UE/ _MCS and a physical resource block. size.

It should be noted that the network device can schedule multiple TBs for the UE in one DCI, and respectively indicate the transmission status (initial or retransmission) of each TB and the corresponding / _MCS and physical resource block size.

Step 320: The UE receives the DCI sent by the network device.

For the TB scheduled for initial transmission in the DCI, step 330 is performed; for the TB scheduled to be retransmitted in the DCI, step 350 is performed.

Step 330: After determining that the TB is the initial transmission and the I _MCS 29, 30 or 31 corresponding to the TB, the UE determines the /H3⁄4 corresponding to the TB according to the foregoing Table 2.

Step 340, UE according to physical resource blocks corresponding to the size of the TB TB and _TBS corresponding to the I DCI indicated in the lookup table 3 above, the TB is determined TBS. In the Time Division Duplex (TDD) system, for TDD special subframes, according to ⁷ TBS And physical resource block size, a lookup table 2, determined TBS is specific implementation of: physical resource block size and the assigned predetermined coefficient (e.g. 0.75) is multiplied by the value of the product as a PRB values in Table 2, and ⁷ TBS, find the corresponding TBS in Table 2. If the allocated physical resource block size is multiplied by a predetermined coefficient (for example, 0.75), the product is smaller than

1 , then use 1 as the PRB value in Table 2, and ⁷ TBS, and find the corresponding TBS in Table 2.

350. The UE determines, as the TBS, the TBS determined when the TB is scheduled to be retransmitted.

It should be noted that the UE may also determine the TBS of the retransmitted TB according to the implementation of the initial transmission described above.

Step 360: The network device sends downlink data to the UE according to the scheduling of the DCI according to the scheduled TBS of the TB and the corresponding modulation level.

Wherein, the TBS can be determined according to communication requirements, and then the physical resource block size is determined. It is also possible to first determine the physical resource block size and then determine the TBS by looking up Table 2.

Step 370: The UE receives downlink data according to parameters such as a TBS and a modulation level corresponding to the TB scheduled by the DCI. Based on the same inventive concept as the method, the embodiment of the present invention further provides a UE, where the UE can be applied to an NCT carrier, and the structure thereof is as shown in FIG. 4, which specifically includes:

a storage module 401, configured to store a correspondence between / _MC , a modulation level, and /H3⁄4, and save a correspondence between the physical resource block size and the TBS;

The control signaling receiving module 402 is configured to receive a DCI of the scheduling TBS, where the DCI corresponding to the I _MCS corresponding to the 和 and the physical resource block size corresponding to the TB are indicated in the DCI;

The transport block size index determining module 403 is configured to determine, according to the correspondence between / _MCS , the number of modulation stages, and /τ^, the corresponding Ώ3⁄4 and the modulation level according to the correspondence between / _MCS , the number of modulation stages, and /τ^ when the TB TB corresponds to / _MCS greater than 28. ;

The transport block size determining module 404 is configured to check the correspondence between the I _TBS , the physical resource block size, and the transport block size according to the I _TBS corresponding to the UI and the physical resource block size corresponding to the TB, and determine the TBS of the TB. , in order to transfer data according to the determined TBS and modulation levels. The TBS in the correspondence between the I _TBS , the physical resource block size, and the TBS is a TBS that is not larger than the target TBS and is closest to the target TBS in the TBS set determined according to the LTE Rel8 protocol. The target TBS is determined according to the physical resource block size in the correspondence and the target code rate of the corresponding NCT carrier. The target code rate of the NCT carrier is larger than the code rate corresponding to when the / _MCS is 25 in the non-NCT carrier.

Preferably, the correspondence between the / _MC , the modulation level, and the transport block size index stored in the storage module 401 includes:

The value of 29/ _MCS corresponds to a value of 27/^^ and a modulation level of 6;

The value of 30 / _MCS corresponds to a value of 28 / ^ ^ and a modulation level of 6;

The / _MCS value of 31 corresponds to /^^ with a value of 29 and a modulation level with a value of 6.

Preferably, the correspondence between the saved I _TBS , the physical resource block size, and the TBS saved in the storage module 401 is When the value is 27, the target code rate of the NCT carrier is a code rate corresponding to a non-NCT carrier/ _MCS of 26;

Based on any of the foregoing UE side embodiments, preferably, in the correspondence between the save/ _ras , the physical resource block size, and the TBS stored in the storage module 401, the TBS determines that the target TBS used is based on the physical resource block. The target code rate of the NCT carrier corresponding to the size and /Ώ« is determined by the following formula:

TBS _taget = N _PRB xN _RE xQ _m xCR- CRC where the ⁷ is the target TBS;

The ^^⁄⁄4 is a physical resource block size in the range of values; the ^ίτ is the number of available REs in a PRB, >120; the number is a modulation level, and the value is 6;

The CR is a target code rate of the NCT carrier;

The CRC is the number of check bits. Preferably, the value of ⁷ ^ ^ is 156, or the value of the ^Λ ^ is 144.

Based on any of the foregoing UE side embodiments, preferably, when the foregoing ΤΒ is retransmitted according to the indication of the DCI and the I _MCS corresponding to the 为 is 29, 30, or 31, the transport block size determining module 403 may also perform the last time. The TBS determined when the TB is scheduled is determined to be a TBS when the TB is scheduled to be retransmitted.

Based on any of the foregoing UE side embodiments, preferably, the corresponding relationship determining module is further configured to:

Determining a target transport block size according to a physical resource block size and a target code rate of the corresponding NCT carrier; finding a transport block size set determined by the Long Term Evolution version Rel 8 protocol, not larger than the target transport block size and taking the target transport block size The transport block size closest to the value;

Determine the size of the found transport block, determine the physical resource block size used by the target transport block size, and the correspondence between /H3⁄4.

Another UE provided by the embodiment of the present invention may be applied to an NCT carrier. The structure is as shown in FIG. 5, and specifically includes: a memory 611 and a processor 612. The processor 612 executes a pre-configured computer. a program, so as to implement the method flow of the UE side in the foregoing embodiment of the present invention, to implement a corresponding function; the memory 611 stores the code of the computer program. The processor 612 can include a baseband processing component, a radio frequency processing component, and the like according to actual needs, for transmitting related information. specific: The memory 611 is configured to save the correspondence between the / _MC , the modulation level and the /H3⁄4, and save the correspondence between the physical resource block size and the TBS;

The processor 612 is configured to: receive a DCI that schedules a TBS, where the DCI corresponding to the I _MCS and the physical resource block size corresponding to the TB are indicated in the DCI; when the / _MCS corresponding to the TB TB is greater than 28, according to the / _MCS , modulation correspondence between the number of stages and / H¾, determines that the corresponding TB I _TBS and modulation level; TB based on the corresponding I _TBS and the size of the physical resource blocks corresponding to TB, Charles I I _TBS, the physical resource block size and Corresponding relationship between transport block sizes, determining the TBS of the TB to transmit data according to the determined TBS and modulation levels. The TBS in the correspondence between the I _TBS , the physical resource block size, and the TBS is a TBS that is not larger than the target TBS and is closest to the target TBS in the TBS set determined according to the LTE Rel8 protocol. The target TBS is determined according to the physical resource block size in the correspondence and the target code rate of the NCT carrier corresponding to the I _TBS . The target code rate of the NCT carrier is greater than the code rate corresponding to the I _MCS of 25 in the non-NCT carrier.

Preferably, the correspondence between the / _MC , the modulation level, and the transport block size index stored in the memory 611 includes:

Preferably, when the value of /H3⁄4 in the correspondence between the save/ _ras , the physical resource block size and the TBS stored in the memory 611 is 27, the target code rate of the NCT carrier is I _{MCS in the} non-NCT carrier. a code rate corresponding to 26 o'clock; when the value is 28, the target code rate of the NCT carrier is a code rate corresponding to a non-NCT carrier/ _MCS of 27;

Based on any of the foregoing UE side embodiments, preferably, in the correspondence between the save/ _ras , the physical resource block size, and the TBS stored in the memory 611, the TBS determines that the target TBS used is based on the physical resource block size. The target bit rate of the NCT carrier corresponding to //Ώ3⁄4 is determined by the following formula:

TBS _taget = N _PRB xN _RE xQ _m xCR-CRC where i ^TBS is the target TBS; the ^3⁄43 is the physical resource block size in the range of values; the ^ ίτ is the number of available REs in a PRB, >120; the number of modulation stages, the value is 6; The CR is a target code rate of the NCT carrier;

Based on any of the foregoing UE side embodiments, preferably, when the TB is determined to be a retransmission and the I _MCS 29, 30, or 31 corresponding to the TB according to the indication of the DCI, the processor 612 may further schedule the TB. The determined TBS is determined to be the TBS when the TB is scheduled to be retransmitted.

Based on any of the foregoing UE side embodiments, preferably, the processor 612 is further configured to:

Based on the same inventive concept as the method, the embodiment of the present invention further provides a network device, where the network device is applied to an NCT carrier, and the structure thereof is as shown in FIG.

a storage module 501, configured to save a correspondence between / _MC , a modulation level, and /H3⁄4, and save a correspondence between a physical resource block size and a TBS;

The modulation and coding level determining module 502 is configured to determine that the value corresponding to the to-be-scheduled 该/ _MCS is greater than

28;

Control signaling sending module 503, configured to send scheduling DCI to the UE TB, TB to the DCI indicates that the corresponding physical resource blocks I _MCS and TB size corresponding to the order according to I _MCS, modulation stages between the UE and Correspondence relationship, determine the /H3⁄4 and the modulation level corresponding to the TB, and #^ according to the TB corresponding /^^ and the corresponding physical resource block size, the search/Ώ3⁄4, the physical resource block size and the correspondence between the TBS , determine the TBS of the TB. The correspondence between the I _TBS , the physical resource block size, and the TBS is a TBS that is not larger than the target TBS and closest to the target TBS in the TBS set determined according to the LTE Rel8 protocol. The target TBS is determined according to the physical resource block size in the correspondence relationship and the target code rate of the NCT carrier corresponding to /H3⁄4. The target code rate of the NCT carrier is larger than the code rate corresponding to when the / _MCS is 25 in the non-NCT carrier.

Preferably, the correspondence between the / _MCS , the modulation level, and the I _TBS , which are stored in the storage module 501 and having the values 29, 30, and 31, includes:

The / _MCS value of 31 corresponds to /^^ with a value of 29 and a modulation level with a value of 6. Preferably, when the value of the correspondence between the saved I _TBS , the physical resource block size, and the TBS stored in the storage module 501 is 27, the target code rate of the NCT carrier is non-NCT carrier/ _MCS is 26 a corresponding code rate; when the value is 28, the target code rate of the NCT carrier is a code rate corresponding to a non-NCT carrier/ _MCS of 27;

When the value of /H3⁄4 is 29, the target code rate of the NCT carrier is a code rate corresponding to when the / _MCS is 28 in the non-NCT carrier.

Based on any of the foregoing network device embodiments, preferably, in the correspondence between the save size stored in the storage module 501, the physical resource block size, and the TBS, the TBS determines that the target TBS used is based on the physical resource block size and The target bit rate of the NCT carrier of the I _TBS pair is determined by the following formula:

TBS _taget = N _PRB xN _RE xQ _m xCR- CRC where i ^TBS is the target TBS;

The CR is a target code rate of the NCT carrier;

Based on any of the foregoing network device embodiments, the method further includes: a correspondence determining module, configured to: determine a target transport block size according to a physical resource block size and a target code rate of the corresponding NCT carrier; and find a long-term evolution version of the Rel 8 protocol. a transport block size in the determined transport block size set that is not larger than the target transport block size and is closest to the target transport block size;

Preferably, when the TB is a retransmission, the TBS determined when the TB was last scheduled may be determined as the TBS when the TB is retransmitted.

Another network device is provided in the embodiment of the present invention. The network device is applied to an NCT carrier. The structure is as shown in FIG. 7. The specific structure includes: a memory 711 and a processor 712. The processor 712 executes a pre-configured computer. a program, so as to implement the method flow of the network device side in the foregoing embodiment of the present invention, to implement a corresponding function; the memory 711 stores the code of the computer program. The processor 712 can include a baseband processing component, a radio frequency processing component, and the like according to actual needs, for transmitting related information. specific: Memory 711, save / _MCS , modulation level and /r^ correspondence, and save /? ^, the correspondence between the physical resource block size and the TB S;

Processor 712 configured to: move the value of 1 / _MCS is determined to be greater than the corresponding scheduled ΤΒ 28; TB transmission schedule of the DCI to UE, where the DCI indicates that the corresponding TB I _MCS and TB corresponding to the physical resource a block size, so that the UE determines the I _TBS and the modulation level corresponding to the TB according to the correspondence between the I _MCS , the modulation level, and the I _TBS , and searches according to the /H3⁄4 corresponding to the TB and the corresponding physical resource block size. The correspondence between the I _TBS , the physical resource block size, and the TBS determines the TBS of the TB. The correspondence between the I _TBS , the physical resource block size, and the TBS is the TBS set determined according to the LTE Rel8 protocol, and the TBSo target TBS that is not larger than the target TBS and closest to the target TBS is the corresponding relationship. The physical resource block size is determined by the target code rate of the NCT carrier corresponding to /. The target code rate of the NCT carrier is larger than the code rate corresponding to when the / _MCS is 25 in the non-NCT carrier.

Preferably, the correspondence between the / _MCS , the number of modulation stages, and the values stored in the memory 711 of 29, 30, and 31 includes:

Preferably, when the value of /H3⁄4 in the correspondence between the save/ _ras , the physical resource block size and the TBS stored in the memory 711 is 27, the target code rate of the NCT carrier is I _{MCS in the} non-NCT carrier. a code rate corresponding to 26 o'clock; when the value is 28, the target code rate of the NCT carrier is a code rate corresponding to a non-NCT carrier/ _MCS of 27;

Based on any of the foregoing network device embodiments, preferably, in the correspondence between the save/ _Γ , the physical resource block size and the TBS stored in the memory 711, the TBS determines that the target TBS used is based on the physical resource block size and The target bit rate of the NCT carrier corresponding to the I _TBS is determined according to the following formula:

TBS _taget = N _PRB xN _RE xQ _m xCR-CRC where i ^TBS is the target TBS;

The CR is a target code rate of the NCT carrier; The CRC is the number of check bits. Preferably, the value of ⁷ ^ ^ is 156, or the value of the ^Λ ^ is 144.

Based on any of the foregoing network device embodiments, the processor 712 is further configured to:

The network device described in the embodiment of the present invention may be, but is not limited to, e B.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each process and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram. Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Rights request

1. A communication method on a new carrier type NCT carrier, which is characterized by including:

Receive downlink control signaling for scheduling a transport block, where the downlink control signaling indicates the index value/ _MCS of the modulation coding level MCS corresponding to the transport block and the physical resource block size corresponding to the transport block;

When the _IMCS corresponding to the transport block is greater than 28, determine the ITBS and modulation level corresponding to the transport block according to the correspondence between / _MCS , the modulation level and the transport block size _TBS index _ITBS ;

According to the physical resource block size corresponding to the transport block, check the correspondence between the physical resource block size and the transport block size, and determine the transport block size of the transport block, so that according to the determined The transport block size and modulation level transmit data; wherein, the transport block size in the correspondence between /Ώ2, physical resource block size and transport block size is a set of transport block sizes determined by the Long Term Evolution Rel 8 protocol , is no larger than the target transport block size and is the transport block size closest to the target transport block size; the target transport block size is determined based on the physical resource block size and the target code rate of the NCT carrier corresponding to /Ώ¾ ; The target code rate of the NCT carrier is greater than the code rate corresponding to the non-NCT carrier when _{the MCS} is 25.

2. The method according to claim 1, characterized in that the corresponding relationship between the _IMCS modulation level and the transport block size index _ITBS includes:

The / _MCS with a value of 29 corresponds to the /^^ with a value of 27 and the modulation level with a value of 6;

/ _MCS with a value of 30 corresponds to /^^ with a value of 28 and a modulation level with a value of 6;

/ _MCS with a value of 31 corresponds to /^^ with a value of 29 and a modulation level with a value of 6.

3. The method according to claim 2, characterized in that when the value is 27, the target code rate of the NCT carrier is the corresponding code rate when the _IMCS of the non-NCT carrier is 26;

When /Ώ¾ is 28, the target code rate of the NCT carrier is the code rate corresponding to the non-NCT carrier when / _MCS is 27;

When /Ώ¾ is 29, the target code rate of the NCT carrier is the code rate corresponding to the non-NCT carrier when / _MCS is 28.

4. The method according to any one of claims 1 to 3, characterized in that the target transport block size is determined according to the physical resource block size and the target code rate of the NCT carrier corresponding to /H¾, and is determined according to the following formula :

^TBS _taget ₌ _N _PRB Number of resource units, ^>120; Said is the modulation level, and the value is 6;

The CR is the target code rate of the NCT carrier;

The CRC is the number of check bits.

5. The method according to claim 4, characterized in that the value of ^Λ ^ is 156, or the value of Λ is 144.

6. The method according to any one of claims 1 to 3, characterized in that, the method further includes:

Determine the target transport block size according to the physical resource block size and the target code rate of the corresponding NCT carrier; Find the set of transport block sizes determined by the long-term evolution version Rel 8 protocol, which is not larger than the target transport block size and is equal to the target transport block size. The transport block size with the closest value;

Determine the correspondence between the found transport block size, the physical resource block size used to determine the target transport block size and /H¾.

7. A communication method on NCT carrier, characterized by including:

Determine the index value / _MC of the modulation coding level corresponding to the transport block to be scheduled, and the value of / _MCS is greater than 28; send downlink control signaling for scheduling the transport block to the user equipment, as indicated in the downlink control signaling / _MCS corresponding to the transport block and the physical resource block size corresponding to the transport block, so that the user equipment determines the transport block according to the correspondence between / _MCS , modulation level and transport block size index /Ώ¾ The corresponding /Ώ¾ and modulation level, and according to the physical resource block size corresponding to the transport block and the transport block, check the correspondence between the physical resource block size and the transport block size, and determine the transmission The transport block size of the block; wherein, the transport block size in the correspondence between the /Ώ¾, the physical resource block size and the transport block size is a set of transport block sizes determined by the Long Term Evolution Version 8 protocol, which is not larger than the target transport block The size of the transport block that is closest to the target transport block size; the target transport block size is determined based on the physical resource block size and the target code rate of the NCT carrier corresponding to /H2; The target of the NCT carrier The code rate is greater than the corresponding code rate when _MCS is 25 in non-NCT carriers.

8. The method according to claim 7, characterized in that the correspondence between the _IMCS modulation level and the transport block size index _ITBS includes:

9. The method according to claim 8, characterized in that when the value is 27, the target code rate of the NCT carrier is the code rate corresponding to the non-NCT carrier/ _MCS when it is 26;

When /H¾ is 28, the target code rate of the NCT carrier is the corresponding code rate when / _MCS is 27 in non-NCT carriers. Rate;

When /H¾ is 29, the target code rate of the NCT carrier is the code rate corresponding to when / _MCS is 28 in non-NCT carriers.

10. The method according to any one of claims 7 to 9, characterized in that the target transport block size is determined according to the physical resource block size and the target code rate of the NCT carrier corresponding to /H2, and is determined according to the following formula :

TBS _taget = N _PRB xN _RE xQ _m xCR-CRC where, ^TBSt is the target transport block size;

The ^¾3 is the physical resource block size within the value range; the Δ^ is the number of available resource units in a physical resource block, ^N ^>2Q; the said ^ is the modulation level, and the value is 6;

The CR is the target code rate of the NCT carrier;

The CRC is the number of check bits.

11. The method according to claim 10, characterized in that the value of ^Λ ^ is 156, or the value of Λ is 144.

12. The method according to any one of claims 7 to 9, characterized in that, the method further includes:

13. A user equipment, characterized in that the user equipment is applied to NCT carriers and includes: a storage module, used to save the correspondence between / _MC , modulation level and transport block size index, and save _ITBS , Correspondence between physical resource block size and transport block size;

A control signaling receiving module, configured to receive downlink control signaling for scheduling a transport block, where the downlink control signaling indicates an index value I _MCS of a modulation coding level corresponding to the transport block and a physical resource block corresponding to the transport block. size; a transport block size index determination module, used to determine the transport block according to the correspondence between / _MC , the modulation level and the transport block size index /^^ when the / _MCS corresponding to the transport block is greater than 28 The corresponding /H and modulation level; a transport block size determination module, configured to search /H, the physical resource block size and the transport block according to the /H corresponding to the transport block and the physical resource block size corresponding to the transport block. The corresponding relationship between the sizes determines the transmission of the transport block. The transmission block size is used to transmit data according to the determined transport block size and modulation level; wherein, the transport block size in the correspondence between / _Γ , the physical resource block size and the transport block size is Long Term Evolution Version 8 Among the set of transport block sizes determined by the protocol, the transport block size is not larger than the target transport block size and is closest to the target transport block size; the target transport block size is based on the NCT corresponding to the physical resource block size and /H The target code rate of the carrier is determined; the target code rate of the NCT carrier is greater than the corresponding code rate when the / _MCS of the non-NCT carrier is 25.

14. The user equipment according to claim 13, characterized in that the correspondence between / _MCS , modulation level and transport block size index /H¾ stored in the storage module includes:

15. The user equipment according to claim 14, characterized in that when /H¾ in the correspondence relationship between / _ras , physical resource block size and transport block size saved by the storage module is 27, the The target code rate of the NCT carrier is the code rate corresponding to the I _MCS of 26 in the non-NCT carrier;

16. The user equipment according to any one of claims 13 to 15, characterized in that, in the correspondence between _ITBS , physical resource block size and transport block size saved by the storage module, the transport block size determines the The target transport block size used is determined according to the following formula based on the physical resource block size and the target code rate of the NCT carrier corresponding to /H¾:

TBS _taget = N _PRB xN _RE xQ _m xCR- CRC where ^TBSt is the target transport block size;

The A is the physical resource block size with a value range of A; The A is the number of available resource units in one physical resource block, A>120;

The said is the modulation level, and the value is 6;

The CR is the target code rate of the NCT carrier;

The CRC is the number of check bits.

17. The user equipment according to claim 15, wherein the value of A is 156, or, The value of ^ίτ is ₁₄ 4.

18. The user equipment according to any one of claims 13 to 15, further comprising a correspondence relationship determination module for:

19. A network device, characterized in that the network device is applied to NCT carrier, including:

Storage module, used to save the correspondence between the I wins modulation level and the transmission block size index /τ^, and save

Correspondence between IT _TBS , physical resource block size and transport block size;

Modulation and coding level determination module, used to determine the index value I of the modulation and coding level corresponding to the transport block to be scheduled. The value of / _MCS is greater than 28;

A control signaling sending module, configured to send downlink control signaling for scheduling the transport block to the user equipment, where the downlink control signaling indicates the / _MCS corresponding to the transport block and the physical resource block size corresponding to the transport block. , so that the user equipment determines the /Ώ¾ corresponding to the transport block and the modulation level according to the correspondence between / _MCS , modulation level and transport block size index /H¾, and determines /Ώ¾ corresponding to the transport block For the physical resource block size corresponding to the transport block, check the correspondence between _ITBS , physical resource block size and transport block size, and determine the transport block size of the transport block; wherein, the _ITBS , physical resource The transport block size in the correspondence between the block size and the transport block size is the transport block size set determined by the Long Term Evolution Version 8 protocol, which is not larger than the determined target transport block size and is closest to the value of the target transport block size. The transport _block size _of Code rate.

20. The network device according to claim 19, characterized in that the correspondence between / _MCS , modulation level, and transport block size index /H¾ stored in the storage module includes:

21. The network device according to claim 20, characterized in that when /H¾ in the correspondence relationship between / _ras , physical resource block size and transport block size saved by the storage module is 27, the The target code rate of the NCT carrier is the code rate corresponding to the I _MCS of 26 in the non-NCT carrier; When /H¾ is 28, the target code rate of the NCT carrier is the code rate corresponding to the non-NCT carrier when / _MCS is 27;

22. The network device according to any one of claims 19 to 21, characterized in that: the storage module stores

In the correspondence relationship between _ITBS , physical resource block size and transport block size, the target transport block size used to determine the transport block size is based on the target code rate of the NCT carrier corresponding to the physical resource block size and /H¾ as follows: Determined by the formula:

TBS _taget = N _PRB xN _RE xQ _m xCR- CRC where, ^{the 7} is the target transport block size;

The CR is the target code rate of the NCT carrier;

The CRC is the number of check bits.

23. The network device according to claim 22, wherein the value of A is 156, or the value of A is ₁₄₄ .

24. The network device according to any one of claims 19 to 21, further comprising a correspondence relationship determination module for:

Determine the target transport block size according to the physical resource block size and the target code rate of the NCT carrier corresponding to /H2; Find the set of transport block sizes determined by the long-term evolution version Rel 8 protocol, which is not larger than the target transport block size and is consistent with the target transport block The transfer block size with the closest size value;