WO2014146507A1 - Procédé et dispositif de communication sur porteuse nct - Google Patents

Procédé et dispositif de communication sur porteuse nct Download PDF

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Publication number
WO2014146507A1
WO2014146507A1 PCT/CN2014/070942 CN2014070942W WO2014146507A1 WO 2014146507 A1 WO2014146507 A1 WO 2014146507A1 CN 2014070942 W CN2014070942 W CN 2014070942W WO 2014146507 A1 WO2014146507 A1 WO 2014146507A1
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Prior art keywords
block size
transport block
value
target
mcs
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PCT/CN2014/070942
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English (en)
Chinese (zh)
Inventor
司倩倩
林亚男
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电信科学技术研究院
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Publication of WO2014146507A1 publication Critical patent/WO2014146507A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H04L5/0046—Determination of how many bits are transmitted on different sub-channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided

Definitions

  • 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
  • the Physical Downlink Control Channel passes the first N orthogonal frequency division multiplexing of one downlink subframe ( Orthogonal Frequency Division Multiplexing, OFDM) symbol transmission.
  • N Orthogonal Frequency Division Multiplexing
  • OFDM Orthogonal Frequency Division Multiplexing
  • N 4 is only allowed in systems with a system bandwidth of 1.4 megahertz (MHz).
  • Cell-specific Reference Signals are transmitted in all downlink subframes supporting Physical Downlink Shared Channel (PDSCH) transmission.
  • the system can support single-antenna port transmission ( ⁇ .), two antennas. Port transmission (PQ, Pi) or four antenna port transmission (PQ, PI, P 2 , P 3 ).
  • a new carrier type 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).
  • the PDSCH transmitted on the non-NCT carrier supports a 32-level Modulation and Coding Scheme (MCS), as shown in Table 1.
  • MCS Modulation and Coding Scheme
  • 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.
  • PRBs physical resource blocks
  • 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
  • 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/ ⁇ 4 ⁇ 4;
  • 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 ⁇ 3 ⁇ 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:
  • 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;
  • 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 /?
  • 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 / ⁇ 3 ⁇ 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/ ⁇ , 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • FIG. 1 is a flowchart of a UE side method according to an embodiment of the present invention
  • FIG. 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
  • 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.
  • 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.
  • 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.
  • DCI Downlink Control Information
  • 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.
  • 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.
  • DI Data Indicator
  • 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.
  • 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.
  • the correspondence between the / MCS and the modulation level and the value greater than the value is predetermined.
  • 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 I TBS corresponding to the / MCS can be incremented based on the value of / MCS corresponding / ⁇ 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 / H3 ⁇ 4 Table 1 greater than the largest I TBS (i.e. 26), and the value of greater than 28 / MCS corresponding / ⁇ 3 ⁇ 4 can vary.
  • 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;
  • 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;
  • 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.
  • 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
  • the above preferred target code rate values are not limited to the embodiments of the present invention.
  • 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.
  • the correspondence between the I TBS , the physical resource block size, and the TBS is predetermined.
  • 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 .
  • 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
  • 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.
  • 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.
  • 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.
  • the value of A ⁇ is 156, or the value of A ⁇ is 144.
  • the Demodulation Reference Signal is transmitted corresponding to 1 ⁇ 2 antenna ports.
  • Nre When the value is 144, the DMRS is transmitted corresponding to 4/8 antenna ports.
  • the TBS is determined.
  • the TBS determined when the TB is last scheduled is determined to be a TBS when the TB is retransmitted.
  • the TBS at the time of retransmission depends on the TBS determined by the last semi-persistent scheduling.
  • 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.
  • 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 ⁇ 3 ⁇ 4 and the modulation level according to the correspondence between the I MCS , the modulation level, and / ⁇ ⁇ and based on the TBS and the I ⁇ 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 ⁇ 3 ⁇ 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.
  • the correspondence between I MCS , the number of modulation stages, and /H3 ⁇ 4 is predetermined.
  • 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.
  • 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;
  • the target code rate of the NCT carrier is a code rate corresponding to a non-NCT carrier/ MCS of 27;
  • the target code rate of the NCT carrier is a code rate corresponding to when the / MCS is 28 in the non-NCT carrier.
  • 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.
  • 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
  • the value of 7 ⁇ ⁇ is 156, or the value of ⁇ ⁇ is 144.
  • the network device side 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.
  • 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.
  • 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 ⁇ is retransmitted.
  • 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.
  • 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.
  • 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.
  • PDCCH PDCCH or an enhanced PDCCH
  • 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.
  • step 330 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.
  • TDD Time Division Duplex
  • 7 TBS 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
  • the UE determines, as the TBS, the TBS determined when the TB is scheduled to be retransmitted.
  • 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.
  • 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.
  • 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 ⁇ 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 / ⁇ , the corresponding ⁇ 3 ⁇ 4 and the modulation level according to the correspondence between / MCS , the number of modulation stages, and / ⁇ 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.
  • 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.
  • the correspondence between the saved I TBS , the physical resource block size, and the TBS saved in the storage module 401 is
  • the target code rate of the NCT carrier is a code rate corresponding to a non-NCT carrier/ MCS of 26;
  • the target code rate of the NCT carrier is a code rate corresponding to a non-NCT carrier/ MCS of 27;
  • the target code rate of the NCT carrier is a code rate corresponding to when the / MCS is 28 in the non-NCT carrier.
  • 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 / ⁇ « 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 ⁇ 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 ⁇ ⁇ is 144.
  • 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.
  • the corresponding relationship determining module is further configured to:
  • 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 / H3 ⁇ 4, 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.
  • the correspondence between the / MC , the modulation level, and the transport block size index stored in the memory 611 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.
  • 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;
  • the target code rate of the NCT carrier is a code rate corresponding to when the / MCS is 28 in the non-NCT carrier.
  • 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 // ⁇ 3 ⁇ 4 is determined by the following formula:
  • TBS taget N PRB xN RE xQ m xCR-CRC
  • i TBS is the target TBS
  • the ⁇ 3 ⁇ 43 is the physical resource block size in the range of values
  • the ⁇ ⁇ 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
  • the CRC is the number of check bits. Preferably, the value of 7 ⁇ ⁇ is 156, or the value of the ⁇ ⁇ is 144.
  • 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.
  • the processor 612 is further configured to:
  • 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 ⁇ / MCS is greater than
  • 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/ ⁇ 3 ⁇ 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.
  • 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 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.
  • 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;
  • the target code rate of the NCT carrier is a code rate corresponding to when the / MCS is 28 in the non-NCT carrier.
  • 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 ⁇ 4 is a physical resource block size in the range of values; the ⁇ 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 ⁇ ⁇ is 144.
  • 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;
  • the TBS determined when the TB was last scheduled may be determined as the TBS when the TB is retransmitted.
  • 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 ⁇ 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.
  • the correspondence between the / MCS , the number of modulation stages, and the values stored in the memory 711 of 29, 30, and 31 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.
  • 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;
  • the target code rate of the NCT carrier is a code rate corresponding to when the / MCS is 28 in the non-NCT carrier.
  • 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 ⁇ 4 is a physical resource block size in the range of values; the ⁇ 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.
  • the value of 7 ⁇ ⁇ is 156, or the value of the ⁇ ⁇ is 144.
  • the processor 712 is further configured to:
  • the TBS determined when the TB was last scheduled may be determined as the TBS when the TB is retransmitted.
  • the network device described in the embodiment of the present invention may be, but is not limited to, e B.
  • 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.
  • computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé et un dispositif de communication sur une porteuse d'un nouveau type de porteuse (NCT). Le procédé consiste à : quand IMCS correspondant à un TB planifié est supérieur à 28, déterminer ITBS correspondant et un niveau de modulation conformément à une correspondance entre IMCS, le niveau de modulation et ITBS ; rechercher une correspondance entre ITBS, la taille d'un PRB et une TBS en fonction de ITBS et de la taille du PRB correspondant au TB, et déterminer une TBS, de manière à transmettre des données conformément à la TBS déterminée et au niveau de modulation. La TBS dans la correspondance est une TBS, parmi des TBS déterminées conformément au protocole existant, qui n'est pas supérieure à une TBS cible déterminée en fonction de la taille du PRB dans la correspondance et d'un débit cible de la porteuse NCT correspondant à ITBS, et possède la valeur la plus proche de celle de la TBS cible; le débit cible est supérieur à un débit de IMCS quand IMCS dans une porteuse non NCT est égal à 25. De cette manière, les ressources sur la porteuse NCT peuvent être entièrement utilisées et le débit de crête peut être accru.
PCT/CN2014/070942 2013-03-22 2014-01-21 Procédé et dispositif de communication sur porteuse nct WO2014146507A1 (fr)

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