WO2017133339A1 - Procédé et appareil de détermination d'intervalle de synchronisation de programme - Google Patents

Procédé et appareil de détermination d'intervalle de synchronisation de programme Download PDF

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Publication number
WO2017133339A1
WO2017133339A1 PCT/CN2016/111357 CN2016111357W WO2017133339A1 WO 2017133339 A1 WO2017133339 A1 WO 2017133339A1 CN 2016111357 W CN2016111357 W CN 2016111357W WO 2017133339 A1 WO2017133339 A1 WO 2017133339A1
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WIPO (PCT)
Prior art keywords
value
scheduling
subframe
interval
period
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PCT/CN2016/111357
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English (en)
Chinese (zh)
Inventor
石靖
戴博
袁弋非
方惠英
夏树强
李书鹏
Original Assignee
中兴通讯股份有限公司
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Priority claimed from CN201610222408.2A external-priority patent/CN107046722B/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP16889145.5A priority Critical patent/EP3413646B1/fr
Priority to US16/074,061 priority patent/US10849144B2/en
Priority to KR1020187025459A priority patent/KR102643922B1/ko
Priority to JP2018540418A priority patent/JP7058605B2/ja
Priority to EP22158355.2A priority patent/EP4075900A1/fr
Publication of WO2017133339A1 publication Critical patent/WO2017133339A1/fr
Priority to US16/952,772 priority patent/US11706787B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for determining a scheduling timing interval.
  • Machine Type Communication also known as Machine to Machine (M2M)
  • Narrow Band Internet of Things is the main application form of the Internet of Things.
  • the characteristics of the communication system are generally narrower than that of the Long Term Evolution (LTE) system, such as 1.4 MHz, 200 kHz, etc.; the number of user terminals or devices (User Equipment, UE for short) is large. Including traditional handheld terminals as well as machines, sensor terminals, etc.; with coverage enhancement requirements, including coverage improvement of 15dB or 20dB.
  • LTE Long Term Evolution
  • UE User Equipment
  • the transmission bandwidth and the downlink subcarrier spacing of the NB-IoT are 180 kHz and 15 kHz, respectively, which are the same as the bandwidth and subcarrier spacing of one physical resource block (Physical Resource Block, PRB) of the LTE system, respectively, which is beneficial to the NB-IoT.
  • PRB Physical Resource Block
  • the related design of the existing LTE system is reused.
  • the GSM spectrum reused by the NB-IoT system is adjacent to the spectrum of the LTE system, it is also beneficial to reduce mutual interference between the two systems.
  • the LTE system uses a Downlink grant (DL grant) and an Uplink grant (UL grant) to schedule downlink data transmission and uplink data transmission of the terminal.
  • the DL grant and the UL grant are collectively referred to as Downlink Control Information (DCI), and the physical downlink control channel (Physical Downlink Control Channel, PDCCH for short) or the Enhanced Physical Downlink Control Channel (Enhanced Physical Downlink Control Channel). Hosted for EPDCCH).
  • DCI Downlink Control Information
  • PDCCH Physical Downlink Control Channel
  • Enhanced Physical Downlink Control Channel Enhanced Physical Downlink Control Channel
  • Hosted for EPDCCH The downlink data is carried in the Physical Downlink Shared Channel (PDSCH), and the uplink data is carried in the Physical Uplink Shared Channel (PUSCH).
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • the PDCCH uses the resources in the first 1-4 Orthogonal Frequency Division Multiplexing (OFDM) symbols in the system bandwidth, and the Control Channel Element (CCE) is used as the basic aggregate resource granularity.
  • the transmission method uses transmit diversity.
  • the EPDCCH uses resources in a part of the PRBs in the system bandwidth to enhance the Control Channel Element (ECCE) as the basic aggregate resource granularity, and the transmission mode uses centralized transmission or distributed transmission.
  • the downlink control channel search space is located in the first 1-4 OFDM symbols of the system bandwidth, the aggregation level used by the enhanced downlink control signal exists only in one subframe, and the partial PRB in the subframe constitutes a search space frequency. Domain collection. Therefore, for an NB-IoT narrowband system with a frequency domain bandwidth of only 1 PRB, its control channel will occupy resources in one or more subframes.
  • the uplink and downlink scheduling timing interval is a fixed timing interval, but the uplink traffic channel and the downlink traffic channel in the narrowband system will also occupy multiple subframes in the time domain. In this case, using a fixed timing interval will result in services of different terminals. The channel collides. How to determine the uplink scheduling timing and downlink scheduling timing in a narrowband system with a PRB size, there is currently no effective solution.
  • the embodiment of the invention provides a method and a device for determining a scheduling timing interval, so as to at least solve the problem that the fixed timing interval in the related art will cause collision of traffic channels of different terminals.
  • a method for determining a scheduling timing interval including:
  • a starting subframe of the scheduled narrowband downlink traffic channel NB-PDSCH or the narrowband uplink traffic channel NB-PUSCH by demodulating the narrowband physical downlink control channel NB-PDCCH, where the basis for determining the starting subframe includes at least the following One of: the end subframe of the NB-PDCCH, the end subframe of the search space where the NB-PDCCH is located, the resource allocation in the scheduling window, and the scheduling timing interval indication.
  • a fixed scheduling timing interval is used.
  • the determining mode indicates the location of the NB-PDSCH in one physical resource block PRB.
  • the start subframe of the NB-PDSCH or the NB-PUSCH is determined according to the end subframe of the search space where the NB-PDCCH is located, using a fixed scheduling timing interval or according to a scheduling timing interval, where the scheduling timing
  • the interval indication indicates the end subframe of the search space in which the NB-PDCCH is located to the start subframe of the NB-PDSCH or the NB-PUSCH.
  • the set of the scheduling timing interval used is a finite value, and the value set is set.
  • the value of the intermediate element is contiguous or intermittent, and the set of values is fixed or configured by a system information block SIB or a radio access control RRC, where the scheduling timing interval indication indicates that the end subframe of the NB-PDCCH is The starting subframe of the NB-PDSCH or NB-PUSCH.
  • the scheduling timing interval indication includes one of the following modes: a single indication, and two levels of indication,
  • the single indication indicates a scheduling timing interval by a single parameter
  • the first level indication of the two level indication is a single indication parameter
  • the second level indication of the two level indication is based on the first level indication again.
  • the offset value is indicated, and the set of offset values is a finite value, and the set of values is fixed or configured by SIB or RRC.
  • the value set is configured according to the coverage type, the search space type, and the number of repetitions indicated in the DCI, or implicitly determined to be different values, and the value set includes at least one of the following: the single indication, The first level indication in the two-level indication and the second level indication in the two-level indication; wherein the value corresponding to the value set is a physical subframe or The resource unit or the transmission time interval of the available subframe or the radio frame or the traffic channel, where the number of repetitions indicated in the DCI includes at least one of the following: NB-PDSCH repetition number, NB-PUSCH repetition number, NB-PDCCH repetition number .
  • the different values uniformly use a multiple of Rmax/i, where
  • the scheduling timing interval is represented by the same common factor, and i is a positive integer greater than 0, and the different values include at least one of the following manners:
  • the value of the set of values includes at least one of the following:
  • One group does not use a multiple of Rmax/i, and the other group uses a multiple of Rmax/i.
  • the value of the element in the set of values includes at least one of the following manners:
  • x is at least one of the set ⁇ 0, 1, 2, 3, ..., 20 ⁇ ;
  • An integer multiple of the length of the wireless frame such as ⁇ 10, 20, 30, 40, ... ⁇ ;
  • the control channel occupies an integer multiple of the number of subframes; k x 2 x , where k is a positive integer greater than or greater than zero.
  • the method for determining the maximum value of the elements in the set of values includes at least one of the following: a length of the scheduling window or the scheduling period or the resource allocation period, and a unique value of the fixed or base station configuration, which are respectively determined according to different coverage levels, according to the coverage. At least one of the levels is determined, determined according to the uplink single carrier transmission, and determined according to the uplink subcarrier spacing.
  • the scheduling timing interval is an arbitrary value smaller than the window length of the scheduling window, and the scheduling is performed.
  • the intra-window resource allocation uses a continuous resource allocation of no more than X PRBs or subframes, where the X value is smaller than the scheduling window length, and the scheduling timing interval is the end subframe of the NB-PDCCH to the NB-PDSCH or the NB- The starting subframe of the PUSCH.
  • the NB-PDSCH or the NB-PUSCH is jointly determined according to the offset value dynamically indicated by the DCI.
  • the occupied subframe resources span the scheduling window or only within the scheduling window.
  • the coverage enhancement scenario uses the resource allocation determined resource to repeatedly transmit R times, at least one of the following manners: based on resource allocation in the scheduling window, only repeatedly transmitting R times between the scheduling windows; Resource allocation, repeating Rin times in the scheduling window, repeating Rout times between scheduling windows, wherein at least one of R, Rin, and Rout is notified by RRC or SIB or DCI, and R, Rin, and Rout are all A positive integer.
  • the NB-PDCCH when the NB-PDCCH repeatedly transmits the R times, it includes at least one of the following manners: when R is not greater than or less than Rx, the transmission is repeated only R times in the scheduling window; when R is greater than Rx, only in the scheduling window Repeat R transmissions; when R is greater than Rx, Rin times are repeatedly transmitted in the scheduling window, and Rout times are repeated between scheduling windows, wherein at least one of R, Rin, Rout, and Rx is determined by RRC, SIB, or DCI. Notice that Rx, R, Rin, and Rout are all positive integers.
  • the determining manner of the R, Rin, Rout, and Rx values includes at least one of the following:
  • At least one of R, Rin, Rout, and Rx takes a value of 2 x , where x is at least one of the set ⁇ 0, 1, 2, 3, ..., 20 ⁇ ;
  • At least one of R, Rin, and Rout is determined to be a different fixed value according to different coverage levels, or one or a set of values is configured by the base station, and the specific value is notified in the DCI when configured as a set of values;
  • Rx and/or Rin are determined according to at least one of a coverage level, a scheduling window length, and a maximum number of repetitions.
  • the NB-PDSCH occupies consecutive subframes in the time domain, and the manner of determining the number of consecutive subframes includes at least one of the following:
  • the elements in the finite value set are consecutive values or interval values.
  • the manner in which the NB-PDCCH occupies resources in a narrowband control channel unit NB-CCE used in one PRB pair or one subframe includes one of the following:
  • the search space where the NB-PDCCH is located includes one or more aggregation levels
  • the manner of determining the number of candidate sets corresponding to different aggregation times of different aggregation levels includes at least one of the following:
  • the number of candidate sets for different aggregation levels at different repetition times is 1;
  • Different aggregation levels have different number of candidate sets at different repetition times
  • the number of candidate sets corresponding to aggregation level 1 is greater than one;
  • the number of the candidate sets corresponding to the non-maximum number of repetitions is greater than one;
  • the number of candidate sets is equal to 1, and when the number of repetitions is less than or less than or equal to Rx, the number of candidate sets is greater than one.
  • the scheduling window length is determined according to at least one of a resource unit length, a scheduling timing interval, and a discontinuous transmission interval, and the scheduling window length is configured by the eNB through SIB or RRC, or a fixed length.
  • the determination method includes at least one of the following:
  • the length is greater than at least one of a length of a resource unit, a scheduling timing interval, and a discontinuous transmission interval;
  • the length is an integer multiple of at least one of a length of a resource unit, a scheduling timing interval, and a discontinuous transmission interval;
  • the length satisfies 2 x , wherein x is at least one of the concentrations ⁇ 1, 2, 3, ..., 20 ⁇ ;
  • the length satisfies an integer multiple of the length of the radio frame.
  • the length of the uplink scheduling window is the same as the length of the downlink scheduling window, and is fixed or unified.
  • the uplink scheduling window length and the downlink scheduling window are independently configured or take different fixed values.
  • the starting subframe of the search space where the NB-PDCCH is located is determined according to at least one of a scheduling window length, an offset value, a maximum repetition number Rmax, and a resource allocation period.
  • the starting subframe position, the position of the starting subframe plus the offset value, or the position of the starting subframe minus the offset value is The position of the integer multiple of T, wherein the offset value is not greater than the scheduling window length, wherein the period T is a scheduling window length, a scheduling period or a resource allocation period, or an integer multiple of a scheduling window length, a scheduling period, or a resource allocation period.
  • the initial subframe is located in the first subframe of the period, and the period is an integer multiple of Rmax, where the integer multiple is a continuous value or an interval value, and consecutive values are, for example, ⁇ 1, 2 , 3, 4... ⁇ , the interval values are, for example, ⁇ 1, 2, 4, 8... ⁇ ;
  • the initial subframe is located in the first subframe of the period plus an offset value offset, and the offset value is Rmax divided by an integer multiple of i, and the period is an integer multiple of Rmax, where the integer multiple is taken
  • the values are consecutive, for example, ⁇ 1, 2, 3, 4... ⁇ , and the intervals are, for example, ⁇ 1, 2, 4, 8... ⁇ .
  • the set of values determined by an integer multiple or a non-integer multiple of the period Rmax, or the set of values determined by adding an integer multiple or a non-integer multiple of the period Rmax plus a constant m includes at least the following One:
  • the set of values includes a positive integer greater than or equal to 10;
  • the value collection does not contain 1;
  • the value set contains a non-positive integer greater than 1 and less than 5;
  • the UE-specific search space USS is different from the value set corresponding to the cell common search space CSS, and the value set includes at least one of the following:
  • the CSS value set does not contain a non-positive integer
  • the minimum value in the CSS value set is greater than the minimum value in the USS value set
  • the maximum value in the CSS value set is greater than the maximum value in the USS value set.
  • the base station when the NB-PDCCH or NB-PDSCH or NB-PUSCH is repeatedly transmitted, the base station notifies the repeated transmission to continuous transmission or interval/discontinuous transmission through the SIB, including at least one of the following manners:
  • Fixed period and fixed interval size and the fixed value is a power of 2 or an integer multiple of a radio frame or an integer multiple of 8.
  • the unit of the period and/or interval is a sub-frame or a multiple of Rmax/i, wherein the period and the interval size are respectively configured.
  • joint coding configuration where i is an integer from 1 to 8.
  • the manner in which the interval and the interval in the period are determined according to the threshold value includes at least one of the following:
  • the maximum value of the period is less than or less than or equal to a threshold value
  • the maximum value of the interval size is less than the period value
  • the maximum value of the interval size is less than a threshold value, wherein the threshold value is a fixed value or a value of a high layer signaling configuration.
  • a determining apparatus for scheduling a timing interval including:
  • a determining module configured to determine a scheduled subframe of the scheduled narrowband downlink traffic channel NB-PDSCH or the narrowband uplink traffic channel NB-PUSCH by demodulating the narrowband physical downlink control channel NB-PDCCH, where the starting subframe is determined The basis of the at least one of the following: an end subframe of the NB-PDCCH, an end subframe of a search space where the NB-PDCCH is located, a resource allocation in a scheduling window, and a scheduling timing interval indication.
  • a computer storage medium is further provided, and the computer storage medium may store an execution instruction for performing the implementation of the determining method of the scheduling timing interval in the foregoing embodiment.
  • the start subframe of the scheduled narrowband downlink traffic channel NB-PDSCH or the narrowband uplink traffic channel NB-PUSCH is determined by demodulating the narrowband physical downlink control channel NB-PDCCH, wherein the initiator is determined
  • the basis of the frame includes at least one of the following: the end subframe of the NB-PDCCH, the end subframe of the search space where the NB-PDCCH is located, the resource allocation in the scheduling window, and the scheduling timing interval indication, which are solved in the narrowband system. How to determine the schedule The timing problem saves the indication overhead, improves the resource usage efficiency, solves the problem of resource waste caused by the resource imbalance caused by the fixed timing interval, and solves the congestion problem of continuous transmission.
  • FIG. 1 is a flowchart of a method for determining a scheduling timing interval according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the number of intervals for configuring discontinuous transmission, implicitly determining the interval position, in accordance with a preferred embodiment of the present invention
  • FIG. 3 is a schematic diagram of a configuration preset period and an interval position within a period in accordance with a preferred embodiment of the present invention
  • FIG. 4 is a schematic diagram of configuring a preset period, and the period size is equal to the interval size, in accordance with a preferred embodiment of the present invention
  • FIG. 5 is a structural block diagram of a determining apparatus for scheduling timing intervals according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of the NB-CCE occupying the same consecutive 6 subcarriers in all OFDM symbols according to a preferred embodiment of the present invention
  • FIG. 7 is a schematic diagram of the NB-CCE occupying the same non-contiguous 6 subcarriers in all OFDM symbols according to a preferred embodiment of the present invention.
  • FIG. 8 is a schematic diagram of the NB-CCE occupying different non-contiguous 6 subcarriers in different OFDM symbols according to a preferred embodiment of the present invention
  • FIG. 9 is a first schematic diagram of the NB-CCE occupying different consecutive 6 subcarriers in different OFDM symbols according to a preferred embodiment of the present invention.
  • FIG. 10 is a second schematic diagram of the NB-CCE occupying different consecutive 6 subcarriers in different OFDM symbols according to a preferred embodiment of the present invention.
  • FIG. 11 is a schematic diagram of the scheduling timing interval implicitly determined by a resource allocation within a scheduling window or a scheduling period, in accordance with a preferred embodiment of the present invention.
  • FIG. 12 is a schematic diagram of the scheduling timing interval determined by resource allocation within a scheduling window or scheduling period and in conjunction with dynamic offset values, in accordance with a preferred embodiment of the present invention
  • FIG. 13 is a first schematic diagram 1 of the scheduling timing interval determined by a DCI dynamic indication, in accordance with a preferred embodiment of the present invention.
  • FIG. 14 is a schematic diagram of scheduling timing intervals determined by fixed values when using multiple narrowbands in accordance with a preferred embodiment of the present invention.
  • FIG. 15 is a schematic diagram of a schematic diagram of determining a timing interval by using a multi-narrowband scheduling timing interval by a fixed subframe offset fixed value of a search space in which an NB-PDCCH is located, in accordance with a preferred embodiment of the present invention
  • 16 is a schematic diagram of the scheduling timing interval implicitly determined by a resource allocation within a scheduling window or a scheduling period, in accordance with a preferred embodiment of the present invention
  • 17 is a second schematic diagram of the scheduling timing interval determined by a DCI dynamic indication, in accordance with a preferred embodiment of the present invention.
  • FIG. 18 is a schematic diagram of determining a timing interval by using a multi-narrowband scheduling timing interval by a fixed subframe offset fixed value of a search space in which an NB-PDCCH is located or dynamically indicated by a DCI.
  • FIG. 1 is a flowchart of a method for determining a scheduling timing interval according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:
  • Step S102 demodulating a narrowband physical downlink control channel NB-PDCCH
  • Step S104 Determine a starting subframe of the scheduled narrowband downlink traffic channel NB-PDSCH or the narrowband uplink traffic channel NB-PUSCH by demodulating the narrowband physical downlink control channel NB-PDCCH, where the basis for determining the starting subframe includes At least one of the following: an end subframe of the NB-PDCCH, an end subframe of a search space where the NB-PDCCH is located, a resource allocation in a scheduling window, and a scheduling timing interval indication.
  • the demodulated narrowband physical downlink control channel NB-PDCCH is used to determine the scheduled subframe of the scheduled narrowband downlink traffic channel NB-PDSCH or the narrowband uplink traffic channel NB-PUSCH, which solves how to determine the scheduling timing in the narrowband system.
  • the problem saves the indication overhead and improves the efficiency of resource usage.
  • a fixed scheduling timing interval is used.
  • the downlink control information DCI is adopted. Or implicitly determining the location of the NB-PDSCH in one physical resource block PRB.
  • the start subframe of the NB-PDSCH or the NB-PUSCH is determined according to the end subframe of the search space where the NB-PDCCH is located, using a fixed scheduling timing interval or according to a scheduling timing interval, where The scheduling timing interval indicates a starting subframe indicating the end subframe of the search space in which the NB-PDCCH is located to the NB-PDSCH or the NB-PUSCH.
  • the set of the scheduling timing interval used is a finite value, Value collection
  • the value of the element is continuous or interval
  • the set of values is fixed or configured by a system information block SIB or a radio access control RRC, where the scheduling timing interval indicates that the end subframe of the NB-PDCCH is to the NB-PDSCH or The starting subframe of the NB-PUSCH.
  • the scheduling timing interval indication includes one of the following modes: a single indication, and two levels of indication,
  • the single indication indicates a scheduling timing interval by a single parameter
  • the first level indication of the two-level indication is a single indication parameter
  • the second level indication of the two-level indication indicates that the offset value is again indicated on the basis of the first level indication.
  • the set of offset values is a finite value, and the set of values is fixed or configured by SIB or RRC.
  • the value set is configured according to the coverage type, the search space type, and the number of repetitions indicated in the DCI, or implicitly determined to be different values, and the value set includes at least one of the following: a single indicator, a first level indication in a two level indication, and a second level indication in a two level indication; wherein the value corresponding to the value set is a physical subframe or a available subframe or a resource element of a radio frame or a traffic channel Or a transmission time interval, where the number of repetitions indicated in the DCI includes at least one of the following: NB-PDSCH repetition number, NB-PUSCH repetition number, and NB-PDCCH repetition number.
  • the different values are uniformly used by Rmax/i. a multiple, wherein the scheduling timing interval is represented by the same common factor, and i is a positive integer greater than 0, and the different values include at least one of the following manners:
  • K1 ⁇ k8 are continuous and non-continuous values, and can also be determined by single or two-level indication.
  • k1 to k8 are ⁇ 0, 1, 2, 3, 4, 5, 6, 7 ⁇ ; or ⁇ 0, 1, 2, 4, 6, 8, 12, 16 ⁇ ; or ⁇ 0, 1. 2, 4, 6, 8, 10, 12 ⁇ ; or ⁇ 0, 1, 2, 4, 8, 12, 16, 24 ⁇
  • Rmax/i Use at least two multiples of Rmax/i.
  • the preset or configured threshold value Rmax C, respectively, when Rmax is greater than or equal to C and Rmax is less than C, respectively, the set of values of the scheduling timing intervals of the two groups is respectively used,
  • the value of the value set includes at least one of the following:
  • the two sets of values are (k1 ⁇ k7) * Rmax / 8; (y1 ⁇ y7) * Rmax /8.
  • one set is ⁇ 0, 1, 2, 3, 4, 5, 6, 7 ⁇ , and the other set is ⁇ 0, 2, 4, 6, 8, 12, 16, 24 ⁇ , where C is the default value.
  • Rmax/i Use a different multiple of Rmax/i, using the same common factor representation. For example, expressed by the same common factor (k1 to k7), Use a different Rmax/i as a multiple, such as (k1 ⁇ k7) * Rmax / 8; (k1 ⁇ k7) * Rmax / 4.
  • One group does not use a multiple of Rmax/i, and the other group uses a multiple of Rmax/i.
  • one set takes values from (k1 to k7)*D, and D is a constant; the other set takes values from (y1 to y7)*Rmax/8.
  • the value set is configured by the SIB or the RRC, or is implicitly determined according to at least one of the NB-PDSCH, the NB-PUSCH, and the NB-PDCCH indicated by the DCI, whether it is a single indication or a two-level indication.
  • the set of values is configured by the SIB; for the DCI transmitted in the USS, the set of values is configured by the RRC.
  • the elements in the set of values can be 2 or 4 or 6 or 8 or 10 or 16 and so on.
  • the first level of the two-level indication is 1 bit indicating two kinds of values ⁇ k1, k2 ⁇ , or 2 bits indicating four kinds of values ⁇ k1, k2, k3, k4 ⁇ , or 3 bits indicating 8 kinds of values ⁇ k1, k2 K3, k4, k5, k6, k7, k8 ⁇ , where the maximum k value kmax in the set is configured by the eNB, and the rest is implicitly obtained.
  • the value of kmax is configured according to the coverage type of the terminal. For example, the configuration kmax is 32 when the normal coverage is set, and the kmax is 256 when the coverage is enhanced. Or kmax is implicitly determined according to at least one of NB-PDSCH, NB-PUSCH, and NB-PDCCH indicated by the DCI, and no SIB or RRC configuration is required.
  • the second level indication is a fixed value, such as 1 bit indication ⁇ 0, 1 ⁇ or ⁇ 0, 2 ⁇ or ⁇ 0, 4 ⁇ ; 2bit indication ⁇ 0, 1, 2, 3 ⁇ or ⁇ 0, 1, 2 4 ⁇ or ⁇ 0, 2, 4, 6 ⁇ ; 3bit indicates ⁇ 0, 1, 2, 3, 4, 5, 6, 7 ⁇ , or the second level is the set of values of the configuration, taking 2bit as an example, indicating ⁇ 0, 1x, 2x, 3x ⁇ , x is the smallest k value in the first level indication, kmin, or x is kmin/4 or kmin/2, or x is kmax/16 or kmax/32.
  • the first-level indication is added to the second-level indication to obtain a scheduling timing interval, or the two-level indication is multiplied by the second-level indication to obtain a scheduling timing interval, or the first-level indication determines the value to be combined.
  • the second level indicates that the determined resource unit length is obtained by the scheduling timing interval.
  • the set of values determined by the single indication can also be regarded as a set of values calculated by the above-mentioned means through the secondary indication.
  • One of the sets ⁇ 4, 5, 6, 7, 8, 9, 10, 11, 16, 17, 18, 19, 32, 33, 34, 35 ⁇ is indicated by 4 bits. The rest of the combinations are similar and will not be described again.
  • the second level indication is determined according to the first level indication, that is, the second level indication value set corresponding to the different first level indication values is different.
  • the larger first level indicates that the corresponding second level indicates a larger granularity.
  • the set of values of the scheduling timing interval indication in the DCI for scheduling paging is different from the value set of the scheduling timing interval indication in the DCI for scheduling the unicast service.
  • (Case 1) The number of the value set elements indicated by the scheduling timing interval in the DCI for scheduling the paging is the same as the number of the value set indicating the scheduling timing interval in the DCI of the scheduled unicast service.
  • the specific value elements are different, and the former takes the value.
  • the elements in the collection are more spaced apart. For example, the maximum k value in the set of timing interval values of the scheduling aging is greater than the maximum k value in the set of timing intervals of the scheduled unicast service.
  • the first level refers to The k4 is different, and the subsequent k1-k3 implicitly obtain different ways.
  • the scheduling timing interval in the DCI for scheduling Paging indicates that the number of elements of the set value is greater than that of the scheduled unicast service.
  • the number of value sets indicated by the scheduling interval in the DCI is different.
  • the elements in the former value set are larger.
  • the unit corresponding to the value of the set of values is a physical sub-frame or a resource unit of a available sub-frame or a traffic channel.
  • the first level indication unit is a resource unit
  • the second level indication unit is a subframe.
  • the value of the element in the set of values includes at least one of the following manners:
  • x is at least one of the set ⁇ 0, 1, 2, 3, ..., 20 ⁇ ;
  • An integer multiple of the length of the wireless frame such as ⁇ 10, 20, 30, 40, ... ⁇ ;
  • the control channel occupies an integer multiple of the number of subframes; k x 2 x , where k is a positive integer greater than or greater than zero.
  • the maximum value determining manner of the element in the value set includes at least one of: a scheduling window or a scheduling period or a length of a resource allocation period, a fixed value or a unique value of a base station configuration, respectively, according to different coverage levels. Determining, determining according to at least one of the coverage levels, determining according to the uplink single carrier transmission, and determining according to the uplink subcarrier spacing.
  • the maximum value determining manner of the element in the value set includes at least one of: a scheduling window or a scheduling period or a length of a resource allocation period, a fixed value or a unique value of a base station configuration, respectively, according to different coverage levels. Determining, determining according to at least one of the coverage levels, determining according to the uplink single carrier transmission, and determining according to the uplink subcarrier spacing.
  • the maximum value determining manner of the elements in the value set includes at least one of the following: a scheduling window or a scheduling period or a length of a resource allocation period, that is, a maximum value of an element in the value set is equal to or not greater than a scheduling window or The length of the period; the unique value of the fixed or base station configuration, that is, the maximum value in the set of values is a unique value; determined according to different coverage levels, respectively, the maximum values corresponding to different coverage levels are different; determined according to at least one of the coverage levels That is, the maximum values corresponding to different coverage levels are allowed to be the same at this time, for example, the maximum values corresponding to coverage levels 0 and 1 are the same, and the maximum values corresponding to coverage levels 2 and 3 are the same; determined according to uplink single carrier transmission, that is, uplink single carrier transmission The corresponding maximum value is different from the maximum value corresponding to the uplink multi-carrier transmission; according to the uplink sub-carrier spacing, for example, the maximum value corresponding to the
  • the scheduling timing interval is an arbitrary value smaller than the window length of the scheduling window, where
  • the resource allocation in the scheduling window uses a continuous resource allocation of no more than X PRBs or subframes, where X is smaller than the scheduling window length, X is preferably 6, and the scheduling timing interval is the ending subframe of the NB-PDCCH to the NB-PDSCH.
  • the starting subframe of the NB-PUSCH uses a continuous resource allocation of no more than X PRBs or subframes, where X is smaller than the scheduling window length, X is preferably 6, and the scheduling timing interval is the ending subframe of the NB-PDCCH to the NB-PDSCH.
  • scheduling window can also be expressed by other terms, such as scheduling period, resource allocation period, and resource division. Distribution range, etc.
  • the NB-PDSCH or the NB-PUSCH when the initial subframe of the NB-PDSCH or the NB-PUSCH is determined according to the resource allocation in the scheduling window, the NB-PDSCH or the NB is jointly determined according to the offset value dynamically indicated by the DCI. - The subframe resources occupied by the PUSCH span the scheduling window or only within the scheduling window.
  • the coverage enhancement scenario uses the resource allocation determined resource to repeatedly transmit R times
  • at least one of the following manners is adopted: based on resource allocation in the scheduling window, only R times are repeatedly transmitted between the scheduling windows; Based on resource allocation in the scheduling window, Rin times are repeatedly transmitted in the scheduling window, and Rout times are repeated between the scheduling windows, wherein at least one of R, Rin, and Rout is notified by RRC or SIB or DCI, R, Rin And Rout are both positive integers.
  • the NB-PDCCH when the NB-PDCCH repeatedly transmits the R times, at least one of the following manners is included: when R is not greater than or less than Rx, the transmission is repeated only R times in the scheduling window; when R is greater than Rx, Repeatedly transmitting R times only between the scheduling windows; when R is greater than Rx, Rin times are repeatedly transmitted in the scheduling window, and Rout times are repeated between the scheduling windows, wherein at least one of R, Rin, Rout, and Rx is used by RRC. , SIB or DCI notification, Rx, R, Rin and Rout are positive integers.
  • the R, Rin, Rout, and Rx value determining manners include at least one of the following:
  • At least one of R, Rin, Rout, and Rx takes a value of 2 x , where x is at least one of the set ⁇ 0, 1, 2, 3, ..., 20 ⁇ ;
  • At least one of R, Rin, and Rout is determined to be a different fixed value according to different coverage levels, or one or a set of values is configured by the base station, and the specific value is notified in the DCI when configured as a set of values;
  • Rx and/or Rin are determined according to at least one of a coverage level, a scheduling window length, and a maximum number of repetitions.
  • Rx and Rin are determined to be 4 according to the regular coverage; or Rx and or Rin are determined to be not greater than the value of the scheduling window according to the scheduling window length; or Rx and or Rin are determined to be not greater than the scheduling window length and the maximum number of repetitions. The value of the scheduling window length and the maximum number of repetitions;
  • the NB-PDSCH repeats transmission in 8 scheduling windows and repeats transmission 4 times in the scheduling window.
  • the NB-PDSCH occupies consecutive subframes in the time domain, and the manner of determining the number of consecutive subframes includes at least one of the following:
  • the manner in which the NB-PDCCH occupies resources in a narrowband control channel unit NB-CCE used in one PRB pair or one subframe includes one of the following:
  • the NB-CCE occupies different resources in a subframe or an OFDM symbol according to different cell IDs.
  • the NB-CCE pattern used by different cells uses different specific resources in the above multiple resource occupation modes or the same resource occupation mode.
  • the PRB pair specifically includes 12 subcarriers in the frequency domain and 12 or 14 OFDM symbols in the time domain. Among them, 14 OFDM symbols use normal CP, and 12 OFDM symbols use Extended CP.
  • the search space where the NB-PDCCH is located includes one or more aggregation levels, and the manner of determining the number of candidate sets corresponding to the different repetition times of the aggregation level includes at least one of the following:
  • the number of candidate sets for different aggregation levels at different repetition times is 1;
  • Different aggregation levels have different number of candidate sets at different repetition times
  • the number of candidate sets corresponding to aggregation level 1 is greater than one;
  • the number of the candidate sets corresponding to the non-maximum number of repetitions is greater than one;
  • the number of candidate sets is equal to 1, and when the number of repetitions is less than or less than or equal to Rx, the number of candidate sets is greater than one.
  • the scheduling window length is determined according to at least one of a length of a resource unit, a scheduling timing interval, and a discontinuous transmission interval, and the scheduling window length is configured by the eNB through SIB or RRC, or a fixed length.
  • the determination method includes at least one of the following:
  • the length is greater than at least one of a length of a resource unit, a scheduling timing interval, and a discontinuous transmission interval;
  • the length is an integer multiple of at least one of a length of a resource unit, a scheduling timing interval, and a discontinuous transmission interval;
  • the length satisfies 2 x , where x is at least one of the concentrations ⁇ 1, 2, 3, ..., 20 ⁇ ;
  • This length satisfies an integer multiple of the length of the radio frame.
  • the length of the uplink scheduling window is the same as that of the downlink scheduling window, and is fixed or unified.
  • the uplink scheduling window length and the downlink scheduling window are independently configured or take different fixed values.
  • the window length is an integer multiple of 32, and preferably the window length is a set ⁇ 32, 64, 128, 256, At least one of 512, 768, 1024, 1280, 1536, 1792, 2048 ⁇ .
  • the starting subframe of the search space where the NB-PDCCH is located is determined according to at least one of a scheduling window length, an offset value, a maximum repetition number Rmax, and a resource allocation period.
  • the starting subframe position, the position of the starting subframe plus the offset value, or the starting subframe minus the offset is an integer multiple of T, wherein the offset value is not greater than the scheduling window length, wherein the period T is a scheduling window length, a scheduling period or a resource allocation period, or a scheduling window length, a scheduling period, or a resource allocation period. Integer multiple.
  • offset value offset is less than the window length 1/2, 1/4.
  • the value of the predefined or base station configuration such as 0, 1, 2, 3.
  • n s represents the slot number
  • SFN is the radio frame number
  • k represents the starting subframe
  • N represents the scheduling window length or an integer multiple of the scheduling window length
  • offset represents the offset value
  • the starting subframe is located in the first subframe of the period, and the period is an integer multiple of Rmax, where the integer multiple is a continuous value ⁇ 1, 2, 3, 4... ⁇ or an interval value ⁇ 1 , 2, 4, 8... ⁇ ;
  • the starting subframe is located in the first subframe of the period plus an offset value offset, and the offset value is Rmax divided by an integer multiple of i, the period is an integer multiple of Rmax, and i is preferably 8, wherein the integer multiple is taken
  • the value is a continuous value ⁇ 1, 2, 3, 4... ⁇ or an interval value ⁇ 1, 2, 4, 8... ⁇ .
  • the set of values determined by an integer multiple or a non-integer multiple of Rmax, or a set of values determined by adding an integer multiple or a non-integer multiple of Rmax plus a constant m includes At least one of the following:
  • the set of values includes a positive integer greater than or equal to 10; considering that NB-IoT has a narrower bandwidth relative to eMTC, a longer period in the time domain is required to better time-division multiplexing different terminals.
  • the value collection does not contain 1;
  • the value set contains a non-positive integer greater than 1 and less than 5;
  • the value set is X1
  • the value set corresponding to the USS and the CSS is different, wherein the CSS is used for the access process.
  • the set of values includes at least one of the following:
  • the CSS value set does not contain a non-positive integer
  • the minimum value in the CSS value set is greater than the minimum value in the USS value set
  • the maximum value in the CSS value set is greater than the maximum value in the USS value set.
  • the CSS value set is ⁇ 2, 3, 4, 5, 6, 8, 10, 16 ⁇ and the USS value set is ⁇ 1.5, 2, 3, 4, 5, 6, 8, 10 ⁇ ; CSS value The set is ⁇ 2, 4, 6, 8, 10, 16, 24, 32 ⁇ and the USS value set is ⁇ 1.5, 2, 4, 6, 8, 10, 12, 16 ⁇ ; the CSS value set is ⁇ 2 , 3, 4, 5, 8, 10, 16, 32 ⁇ and the USS value set is ⁇ 1.5, 2, 2.5, 4, 5, 8, 10, 16 ⁇ .
  • the unit of the period and or interval is a sub-frame or a multiple of Rmax/i.
  • the period and the interval size are respectively configured or jointly coded.
  • i is an integer from 1 to 8.
  • the interval size values included in different periodic configurations are different, and the interval size is not greater than its corresponding period value.
  • the manner in which the interval and the interval in the period are determined according to the threshold value includes at least one of the following:
  • the maximum value of the period is less than or less than or equal to the threshold value
  • the maximum value of the interval size is less than the period value
  • the maximum value of the interval size is less than a threshold value, where the threshold value is a fixed value or a value of a high layer signaling configuration.
  • the threshold value is 64.
  • the period maximum value is 64
  • the gap size maximum value is less than 64.
  • the base station When the NB-PDCCH or NB-PDSCH or NB-PUSCH is repeatedly transmitted, the base station notifies its repeated transmission to continuous transmission or interval/discontinuous transmission through high layer signaling (such as SIB or RRC) or physical layer signaling (such as DCI). . Including at least one of the following:
  • continuous transmission or discontinuous transmission is configured by 1 bit.
  • the interval is between Rmax/2 and the interval size is Rmax or Rmax/2 or a fixed value.
  • FIG. 2 is a schematic diagram of the number of intervals for configuring discontinuous transmissions, implicitly determined by spacing locations, as shown in FIG. 2, such as the number of intervals for non-continuous transmission by 2 bit configuration, in accordance with a preferred embodiment of the present invention.
  • 0 means continuous transmission
  • 1 means 1 interval and the interval is between Rmax/2 and the interval size is Rmax/2
  • 2 means there are 3 intervals and the interval is between Rmax/4 and the interval size is Rmax/4
  • FIG. 3 is a schematic diagram of a configuration of a preset period and an interval position within a period according to a preferred embodiment of the present invention, as shown in FIG. 3, for configuring a preset period, and an interval position within the period, the interval is in a period
  • the inner partition and the size of the Gap are not larger than the size of the period. It is necessary to define a transmission period, and then additionally define the start and length of the transmission interval in one cycle. Simply, the interval can be configured only at the beginning or end of the cycle.
  • the length of the cycle and the length of the gap in the cycle are configured.
  • the period length and the gap have a predefined set of values, and the values are preferably configured according to the coverage type.
  • the value of the Gap may be an element in the set of repeated transmission times used by the NB-PDCCH or the NB-PDSCH, such as 1, 2, 4, 8, 16, 32, or an integer multiple of the radio frame, 10, 20, 30. , 40...
  • the NB-PDCCH also called NPDCCH, which refers to the physical downlink control channel of the NB-IoT
  • NPDCCH the physical downlink control channel of the NB-IoT
  • the value of the Gap may be an element in the set of repeated transmission times used by the NB-PDCCH or the NB-PDSCH, such as 1, 2, 4, 8, 16, 32, or an integer multiple of the radio frame, 10, 20, 30. , 40...
  • Cell-level interval transmission is configured through the SIB, and all downlink channels are applicable, or only applicable to the NB-PDCCH and or NB-PDSCH of the public message.
  • the UE-level interval transmission is configured by RRC or DCI, for example, by RRC configuring NB-PDCCH and or NB-PDSCH, and configuring NB-PDSCH interval transmission by DCI.
  • Fixed period and fixed interval size and the fixed value is a power of 2 or an integer multiple of a radio frame or an integer multiple of 8.
  • the method for determining the scheduling timing interval of the foregoing embodiment may be applied to the terminal, or stand on.
  • a device for determining a scheduling interval is provided, which is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 5 is a structural block diagram of a device for determining a scheduling timing interval according to an embodiment of the present invention. As shown in FIG. 5, the device includes:
  • the demodulation module 52 is configured to demodulate the narrowband physical downlink control channel NB-PDCCH;
  • the determining module 54 is configured to determine a starting subframe of the scheduled narrowband downlink traffic channel NB-PDSCH or the narrowband uplink traffic channel NB-PUSCH by demodulating the narrowband physical downlink control channel NB-PDCCH, where the starting subframe is determined The basis of the at least one of the following: the end subframe of the NB-PDCCH, the end subframe of the search space where the NB-PDCCH is located, the resource allocation in the scheduling window, and the scheduling timing interval indication.
  • the demodulation module 52 is configured to demodulate the narrowband physical downlink control channel NB-PDCCH; the determining module 54 is configured to determine the scheduled narrowband downlink traffic channel NB-PDSCH or narrowband by demodulating the narrowband physical downlink control channel NB-PDCCH.
  • the starting subframe of the uplink traffic channel NB-PUSCH solves the problem of how to determine the scheduling timing in the narrowband system, saves the indication overhead, and improves the resource use efficiency.
  • the demodulation module 52 and the determination module 54 may implement their respective functions individually or in combination to implement the functions of the apparatus.
  • a fixed scheduling timing interval is used.
  • the downlink control information DCI is adopted. Or implicitly determining the location of the NB-PDSCH in one physical resource block PRB.
  • the start subframe of the NB-PDSCH or the NB-PUSCH is determined according to the end subframe of the search space where the NB-PDCCH is located, using a fixed scheduling timing interval or according to a scheduling timing interval, where The scheduling timing interval indicates a starting subframe indicating the end subframe of the search space in which the NB-PDCCH is located to the NB-PDSCH or the NB-PUSCH.
  • the set of the scheduling timing interval used is a finite value
  • the values of the elements in the set of values are consecutive or spaced, and the set of values is fixed or configured by the system information block SIB or the radio access control RRC, where the scheduling timing interval indication indicates that the end subframe of the NB-PDCCH is The starting subframe of the NB-PDSCH or NB-PUSCH.
  • the scheduling timing interval indication includes one of the following modes: a single indication, and two levels of Show,
  • the single indication indicates a scheduling timing interval by a single parameter
  • the first level indication of the two-level indication is a single indication parameter
  • the second level indication of the two-level indication indicates that the offset value is again indicated on the basis of the first level indication.
  • the set of offset values is a finite value, and the set of values is fixed or configured by SIB or RRC.
  • the value of the element in the set of values includes at least one of the following manners:
  • x is at least one of the set ⁇ 0, 1, 2, 3, ..., 20 ⁇ ;
  • An integer multiple of the length of the wireless frame such as ⁇ 10, 20, 30, 40, ... ⁇ ;
  • the control channel occupies an integer multiple of the number of subframes; k x 2 x , where k is a positive integer greater than or greater than zero.
  • the maximum value determining manner of the element in the value set includes at least one of: a scheduling window or a scheduling period or a length of a resource allocation period, a fixed value or a unique value of a base station configuration, respectively, according to different coverage levels. Determining, determining according to at least one of the coverage levels, determining according to the uplink single carrier transmission, and determining according to the uplink subcarrier spacing.
  • the maximum value determining manner of the element in the value set includes at least one of: a scheduling window or a scheduling period or a length of a resource allocation period, a fixed value or a unique value of a base station configuration, respectively, according to different coverage levels. Determining, determining according to at least one of the coverage levels, determining according to the uplink single carrier transmission, and determining according to the uplink subcarrier spacing.
  • the maximum value determining manner of the elements in the value set includes at least one of the following: a scheduling window or a scheduling period or a length of a resource allocation period, that is, a maximum value of an element in the value set is equal to or not greater than a scheduling window or The length of the period; the unique value of the fixed or base station configuration, that is, the maximum value in the set of values is a unique value; determined according to different coverage levels, respectively, the maximum values corresponding to different coverage levels are different; determined according to at least one of the coverage levels That is, the maximum values corresponding to different coverage levels are allowed to be the same at this time, for example, the maximum values corresponding to coverage levels 0 and 1 are the same, and the maximum values corresponding to coverage levels 2 and 3 are the same; determined according to uplink single carrier transmission, that is, uplink single carrier transmission The corresponding maximum value is different from the maximum value corresponding to the uplink multi-carrier transmission; according to the uplink sub-carrier spacing, for example, the maximum value corresponding to the
  • the scheduling timing interval is an arbitrary value smaller than the window length of the scheduling window, where
  • the resource allocation in the scheduling window uses a continuous resource allocation of no more than X PRBs or subframes, where X is smaller than the scheduling window length, X is preferably 6, and the scheduling timing interval is the ending subframe of the NB-PDCCH to the NB-PDSCH.
  • the starting subframe of the NB-PUSCH uses a continuous resource allocation of no more than X PRBs or subframes, where X is smaller than the scheduling window length, X is preferably 6, and the scheduling timing interval is the ending subframe of the NB-PDCCH to the NB-PDSCH.
  • scheduling window may also be represented by other terms, such as a scheduling period, a resource allocation period, a resource allocation range, and the like.
  • the NB-PDSCH or the NB-PUSCH when the initial subframe of the NB-PDSCH or the NB-PUSCH is determined according to the resource allocation in the scheduling window, the NB-PDSCH or the NB is jointly determined according to the offset value dynamically indicated by the DCI. -PUSCH occupation
  • the sub-frame resources span the scheduling window or only within the scheduling window.
  • the coverage enhancement scenario uses the resource allocation determined resource to repeatedly transmit R times
  • at least one of the following manners is adopted: based on resource allocation in the scheduling window, only R times are repeatedly transmitted between the scheduling windows; Based on resource allocation in the scheduling window, Rin times are repeatedly transmitted in the scheduling window, and Rout times are repeated between the scheduling windows, wherein at least one of R, Rin, and Rout is notified by RRC or SIB or DCI, R, Rin And Rout are both positive integers.
  • the NB-PDCCH when the NB-PDCCH repeatedly transmits the R times, at least one of the following manners is included: when R is not greater than or less than Rx, the transmission is repeated only R times in the scheduling window; when R is greater than Rx, Repeatedly transmitting R times only between the scheduling windows; when R is greater than Rx, Rin times are repeatedly transmitted in the scheduling window, and Rout times are repeated between the scheduling windows, wherein at least one of R, Rin, Rout, and Rx is used by RRC. , SIB or DCI notification, Rx, R, Rin and Rout are positive integers.
  • the R, Rin, Rout, and Rx value determining manners include at least one of the following:
  • At least one of R, Rin, Rout, and Rx takes a value of 2 x , where x is at least one of the set ⁇ 0, 1, 2, 3, ..., 20 ⁇ ;
  • At least one of R, Rin, and Rout is determined to be a different fixed value according to different coverage levels, or one or a set of values is configured by the base station, and the specific value is notified in the DCI when configured as a set of values;
  • Rx and/or Rin are determined according to at least one of a coverage level, a scheduling window length, and a maximum number of repetitions.
  • Rx and Rin are determined to be 4 according to the regular coverage; or Rx and or Rin are determined to be not greater than the value of the scheduling window according to the scheduling window length; or Rx and or Rin are determined to be not greater than the scheduling window length and the maximum number of repetitions. The value of the scheduling window length and the maximum number of repetitions;
  • the NB-PDSCH repeats transmission in 8 scheduling windows and repeats transmission 4 times in the scheduling window.
  • the NB-PDSCH occupies consecutive subframes in the time domain, and the manner of determining the number of consecutive subframes includes at least one of the following:
  • the manner in which the NB-PDCCH occupies resources in a narrowband control channel unit NB-CCE used in one PRB pair or one subframe includes one of the following:
  • the NB-CCE occupies different resources in a subframe or an OFDM symbol according to different cell IDs.
  • the NB-CCE pattern used by different cells uses different specific resources in the above multiple resource occupation modes or the same resource occupation mode.
  • the PRB pair specifically includes 12 subcarriers in the frequency domain and 12 or 14 OFDM symbols in the time domain. Among them, 14 OFDM symbols use normal CP, and 12 OFDM symbols use Extended CP.
  • the search space where the NB-PDCCH is located includes one or more aggregation levels, and the manner of determining the number of candidate sets corresponding to the different repetition times of the aggregation level includes at least one of the following:
  • the number of candidate sets for different aggregation levels at different repetition times is 1;
  • Different aggregation levels have different number of candidate sets at different repetition times
  • the number of candidate sets corresponding to aggregation level 1 is greater than one;
  • the number of the candidate sets corresponding to the non-maximum number of repetitions is greater than one;
  • the number of candidate sets is equal to 1, and when the number of repetitions is less than or less than or equal to Rx, the number of candidate sets is greater than one.
  • the scheduling window length is determined according to at least one of a length of a resource unit, a scheduling timing interval, and a discontinuous transmission interval, and the scheduling window length is configured by the eNB through SIB or RRC, or a fixed length.
  • the determination method includes at least one of the following:
  • the length is greater than at least one of a length of a resource unit, a scheduling timing interval, and a discontinuous transmission interval;
  • the length is an integer multiple of at least one of a length of a resource unit, a scheduling timing interval, and a discontinuous transmission interval;
  • the length satisfies 2 x , where x is at least one of the concentrations ⁇ 1, 2, 3, ..., 20 ⁇ ;
  • This length satisfies an integer multiple of the length of the radio frame.
  • the length of the uplink scheduling window is the same as that of the downlink scheduling window, and is fixed or unified.
  • the uplink scheduling window length and the downlink scheduling window are independently configured or take different fixed values.
  • the window length is an integer multiple of 32, and preferably the window length is at least one of the set ⁇ 32, 64, 128, 256, 512, 768, 1024, 1280, 1536, 1792, 2048 ⁇ .
  • the starting subframe of the search space where the NB-PDCCH is located is determined according to at least one of a scheduling window length, an offset value, a maximum repetition number Rmax, and a resource allocation period.
  • the starting subframe position, the position of the starting subframe plus the offset value, or the starting subframe minus the offset is an integer multiple of T, wherein the offset value is not greater than the scheduling window length, wherein the period T is a scheduling window length, a scheduling period or a resource allocation period, or a scheduling window length, a scheduling period, or a resource allocation period. Integer multiple.
  • offset value offset is less than the window length 1/2, 1/4.
  • the value of the predefined or base station configuration such as 0, 1, 2, 3.
  • n s represents the slot number
  • SFN is the radio frame number
  • k represents the starting subframe
  • N represents the scheduling window length or an integer multiple of the scheduling window length
  • offset represents the offset value
  • the NB-CCE specifically occupied by the NB-PDCCH in one PRB pair or one subframe includes one of the following modes:
  • FIG. 6 is a schematic diagram of the NB-CCE occupying the same consecutive 6 subcarriers in all OFDM symbols according to a preferred embodiment of the present invention, occupying The same consecutive 6 subcarriers include: occupying the first 6 or the last 6 of the subcarriers 0-11 in all OFDM symbols (as shown in FIG. 6).
  • FIG. 7 is a schematic diagram of the NB-CCE occupying the same non-contiguous 6 subcarriers in all OFDM symbols according to a preferred embodiment of the present invention, occupying the same non-contiguous 6 subcarriers including: (1) occupying odd subcarriers or even numbers Subcarrier (as shown in Figure 7); (2) equally spaced between 12 subcarriers with 2 or 3 consecutive subcarriers, such as NB-CCE#0 occupying subcarriers ⁇ 0, 1, 4, 5, 8, 9 ⁇ or ⁇ 0, 1, 2, 6, 7, 8 ⁇ . (3) Non-continuous occupation between 12 subcarriers with 2 or 4 consecutive subcarriers, such as NB-CCE#0 occupying subcarriers ⁇ 0, 1, 4, 5, 6, 7 ⁇ or ⁇ 0, 1, 6, 7 8,9,9 ⁇ .
  • FIG. 8 is a schematic diagram of the NB-CCE occupying different non-contiguous 6 subcarriers in different OFDM symbols according to a preferred embodiment of the present invention, two
  • the RE used by the NB-CCE can ensure that the SFBC pair is a neighboring RE, but the NB-CCE does not occupy six consecutive subcarriers, as shown in FIG.
  • FIG. 9 is a NB-CCE occupying different consecutive 6 subcarriers in different OFDM symbols according to a preferred embodiment of the present invention. 1 is shown in FIG. 9; FIG.
  • FIG. 10 is a schematic diagram 2 of the NB-CCE occupying different consecutive 6 subcarriers in different OFDM symbols according to a preferred embodiment of the present invention, and the OFDM symbols in slot 0 use the same 6
  • the OFDM symbol in slot 1 uses another 6 subcarriers, as shown in FIG.
  • One part of the OFDM symbols uses the same 6 subcarriers, and the other part of the OFDM symbols uses the other 6 subcarriers.
  • the search space where the NB-PDCCH is located includes one or more aggregation levels, and the manner of determining the number of candidate sets corresponding to the different repetition times of the aggregation level includes at least one of the following:
  • the number of candidate sets is equal to 1, and when the number of repetitions is less than or less than or equal to Rx, the number of candidate sets is greater than one.
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 1, R1, 8 ⁇ , ⁇ 1, R2, 4 ⁇ , ⁇ 1, R3, 1 ⁇ , ⁇ 1, R4, 1 ⁇ , ⁇ 2, R1, 8 ⁇ , ⁇ 2, R2, 4 ⁇ , ⁇ 2, R3, 1 ⁇ , ⁇ 2, R4, 1 ⁇ ] or [ ⁇ 2, R1, 8 ⁇ , ⁇ 2, R2, 4 ⁇ , ⁇ 2, R3, 1 ⁇ , ⁇ 2, R4, 1 ⁇ ] or [ ⁇ 2, R1, 8 ⁇ , ⁇ 2, R2, 1 ⁇ , ⁇ 2, R3, 1 ⁇ , ⁇ 2, R4, 1 ⁇ ] or [ ⁇ 1, 1,8 ⁇ , ⁇ 2,1,4 ⁇ , ⁇ 2,2,1 ⁇ , ⁇ 2,4,1 ⁇ ] or [ ⁇ 1,1,8 ⁇ , ⁇ 2,1,1 ⁇ , ⁇ 2, 2,1 ⁇ , ⁇ 2,
  • the number of candidate sets is greater than 1 to occupy the search space or to fill the search space as much as possible, and the number of candidate sets corresponding to different aggregation levels is the same, or the number of candidate sets corresponding to the small aggregation level is a large aggregation level.
  • a multiple of the number of corresponding candidate sets for example, the number of candidate sets corresponding to the aggregation level 1 is a multiple of the number of candidate sets corresponding to the aggregation level 2
  • the number of candidate sets is greater than one.
  • R is at least one of the set ⁇ 1, 2, 4, 8, 16, 32, 64, 128, 256 ⁇ .
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 2, R1, 8 ⁇ , ⁇ 2, R2, 4 ⁇ , ⁇ 2, R3, 2 ⁇ , ⁇ 2, R4, 1 ⁇ ]
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 1, R1, 8 ⁇ , ⁇ 1, R2, 4 ⁇ , ⁇ 1, R3, 2 ⁇ , ⁇ 1, R4, 1 ⁇
  • the number of repetitions is a non-maximum repetition number, and the specific number of candidate sets is configured by RRC or SIB signaling.
  • the number of candidate sets for all R is 1.
  • composition of several search spaces is as follows: (where AL1 has a number of candidate sets greater than 1, preferably a frequency domain after the time domain)
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 2, R1, 4 ⁇ , ⁇ 2, R2, 2 ⁇ , ⁇ 2, R3, 1 ⁇ , ⁇ 2, R4, 1 ⁇ ]
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 2, R1, 8 ⁇ , ⁇ 2, R2, 4 ⁇ , ⁇ 2, R3, 1 ⁇ , ⁇ 2, R4, 1 ⁇ ]
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 2, R1, 8 ⁇ , ⁇ 2, R2, 1 ⁇ , ⁇ 2, R3, 1 ⁇ , ⁇ 2, R4, 1 ⁇ ]
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 1, R1, 8 ⁇ , ⁇ 1, R2, 4 ⁇ , ⁇ 1, R3, 2 ⁇ , ⁇ 1, R4, 1 ⁇
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 1, R1, 8 ⁇ , ⁇ 1, R2, 1 ⁇ , ⁇ 1, R3, 1 ⁇ , ⁇ 1, R4, 1 ⁇
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 1, R1, 8 ⁇ , ⁇ 1, R2, 4 ⁇ , ⁇ 1, R3, 1 ⁇ , ⁇ 1, R4, 1 ⁇
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 1, R1, 4 ⁇ , ⁇ 1, R2, 2 ⁇ , ⁇ 1, R3, 1 ⁇ , ⁇ 1, R4, 1 ⁇
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 1, R1, 2 ⁇ , ⁇ 1, R2, 1 ⁇ , ⁇ 1, R3, 1 ⁇ , ⁇ 1, R4, 1 ⁇
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 1, R1, 2 ⁇ , ⁇ 1, R2, 2 ⁇ , ⁇ 1, R3, 2 ⁇ , ⁇ 1, R4, 2 ⁇
  • ⁇ L, R, number of candidate sets ⁇ [ ⁇ 1, R1, 1 ⁇ , ⁇ 1, R2, 1 ⁇ , ⁇ 1, R3, 1 ⁇ , ⁇ 1, R4, 1 ⁇
  • R1 to R4 are exemplified above, and other numbers of repetition numbers such as R1-R2 and R1-R8 may be used.
  • the candidate set should be as much as possible, such as occupying or filling up the search space as much as possible. Possible location, while not increasing the maximum number of blind checks relative to the LTE system.
  • the number of specific candidate sets is:
  • the k value is implicitly determined by Resource Allocation (RA).
  • the scheduling window size (window length) or scheduling period size is T ms, and the T value is fixed or configured by the base station.
  • K preferably aggregates elements in ⁇ 1, 2, 4, 8, 16, 32, 64, 128 ⁇ or sets ⁇ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ⁇ .
  • An integer number of upstream resource units can be included in the schedule window at a time.
  • the uplink resource units are all 2. ⁇ x ms in time, and x is a set ⁇ 0, 1, 2, 3, 5 ⁇ .
  • the possible window length is at least one of the set ⁇ 16, 32, 64, 128, 256, 512, 768, 1024, 1280, 1536, 1792, 2048 ⁇ .
  • the SIB message may be configured to use the same window length in the cell, or the RRC message may be used to independently configure the window length for each UE in the cell.
  • the search space where the downlink control channel is located is configured by the base station, and different search spaces are concentrated in the first X subframes in the scheduling window.
  • the resource allocation bit field is 8 bits), which implements any starting position and occupancy in the scheduling window.
  • the resource allocation indicates the number and position of consecutive subframes occupied in the scheduling window on the time domain.
  • the scheduling timing interval k does not need to be indicated, and the PDSCH resource allocation in the window is implicitly determined, that is, the starting subframe of the NB-PDSCH is the first subframe in the contiguous subframe occupied by the NB-PDSCH determined by the resource allocation, and FIG. 11 is The scheduling timing interval according to a preferred embodiment of the present invention is implicitly determined by a resource allocation within a scheduling window or scheduling period, as shown in FIG.
  • the scheduling timing interval k can achieve any value within the length of the scheduling window. Moreover, without separate indication, the characteristics of the resource allocation type 2 are used, and the starting subframe position and the number of subframe occupations are jointly coded, which saves control signaling overhead.
  • the k value is implicitly determined by the RA. It is possible that one TB block of the NB-PDSCH exceeds the window length.
  • one TB block of the downlink service that may occur in Embodiment 1 exceeds the window length.
  • T the largest subframe occupied by the TB block, but since the USS/CSS occupies the first X subframes, the number of subframes occupied by the allocated NB-PDSCH exceeds the window length T.
  • T the largest subframe occupied by the TB block, but since the USS/CSS occupies the first X subframes, the number of subframes occupied by the allocated NB-PDSCH exceeds the window length T.
  • T the largest subframe occupied by the TB block, but since the USS/CSS occupies the first X subframes, the number of subframes occupied by the allocated NB-PDSCH exceeds the window length T.
  • Base station scheduling implementation That is, the scheduled NB-PDSCH is only flexibly scheduled according to available resources within the scope of the scheduling window. (The existing LTE also has this problem. The TB blocks of different PDSCHs cannot always occupy the largest number of PRBs, and there are cases where the number of PRBs is insufficient.)
  • FIG. 12 is a schematic diagram of the scheduling timing interval being determined by the resource allocation in the scheduling window or the scheduling period and combined with the dynamic offset value according to a preferred embodiment of the present invention, as shown in FIG. .
  • the value of m is the starting position of RA and the backward +m is taken as the actual starting position. That is, the RA is still the resource allocation within the scheduling window, but the result of the resource allocation can be offset by m subframes.
  • this further increases the flexibility of scheduling and reduces the limitation of resource allocation within the window. Additional signaling overhead is added to indicate the offset value. It should be additionally noted that in the next scheduling window, the USS/CSS configuration is determined by the base station, and is not necessarily occupied from the first subframe in the scheduling window.
  • the frequency domain indication includes two modes: one is an implicit indication, that is, the frequency domain subcarrier in which the NB-PDSCH is located is located in the same sub-station as the NB-CCE. The subcarrier position; the other is to directly indicate the frequency domain location through the bit field in the DCI.
  • the NB-PDSCH minimum resource unit is one PRB.
  • Fixed k caused a waste of control resources or NB-PDSCH collision.
  • a variable value of k is required.
  • the base station configures a starting subframe of the search space where the NB-PDCCH is located, and the terminal can detect its own NB-PDCCH in the corresponding search space according to the starting subframe of the search space.
  • the end subframe n of the NB-PDCCH can be determined.
  • the starting subframe of the corresponding NB-PDSCH is n+k. Since there is no scheduling window to limit the resource allocation range, it is necessary to indicate the starting subframe of the NB-PDSCH and the number of occupied subframes.
  • FIG. 13 is the scheduling timing interval determined by the DCI dynamic indication according to a preferred embodiment of the present invention. Schematic 1, as shown in Figure 13.
  • range of values of k includes one of the following conditions:
  • the number of subframes occupied by the NB-PDSCH can be any value within K.
  • the control overhead indicating the timing interval k is large.
  • the value of K requires a certain scheduling period, that is, similar to Embodiment 1, it is necessary to have one scheduling period, and k is indicated in the scheduling period.
  • K is at least one of a set ⁇ 16, 32, 64, 128, 256, 512, 768, 1024, 1280, 1536, 1792, 2048 ⁇ .
  • (2) k is a non-continuous value, that is, the range of k is a subset of (1), such as ⁇ 1, 2, 4, 8, 16, 32, 64...K ⁇ or ⁇ 1, 2. 3, 5, 9, 17, 33...K ⁇ . K has the same meaning as above. Ensure a certain flexibility while reducing the indication signaling overhead.
  • the number of subframes occupied by the NB-PDSCH depends on the base station scheduling. For example, the value set of the NB-PDSCH is a continuous value, such as ⁇ 1, 2, 3, 4, 5, 6 ⁇ ; or the number of subframes occupied by the NB-PDSCH is limited without wasting resources.
  • the number of consecutive subframes occupied by one TB block of the NB-PDSCH is also a non-contiguous set of values, such as ⁇ 1, 2, 4, 8, 16, 32 ⁇ . That is, the timing interval k value set and the NB-PDSCH possible resource allocation size are mutually constrained. At this time, the maximum value in the k-value set also needs to be limited by a certain scheduling period. That is, similar to Embodiment 1, it is necessary to have one scheduling period, and k is indicated in the scheduling period.
  • k is a non-continuous value, that is, the value range of k is a subset in (1), such as ⁇ 1, 2, 4, 8, 16, 32, 64...K ⁇ or ⁇ 1, 2. 3, 5, 9, 17, 33...K ⁇ .
  • K has the same meaning as above.
  • the end subframe position of the NB-PDCCH is an arbitrary position in the search space. Therefore, when the NB-PDSCH start subframe is indicated, in order not to limit the value set, a secondary indication is performed to indicate a corresponding offset value, for example, The k2 value set is ⁇ 0, 1, 2, 3 ⁇ or ⁇ 0, 1, 2, 3, 4, 5, 6, 7 ⁇ , so that the NB-PDSCH value set is a continuous value.
  • the X bit is still required to indicate the number of subframes occupied by the PDSCH. If 3 bits are used, it indicates that the PDSCH occupies a resource allocation that is continuous and does not exceed 6 subframes/PRB.
  • N 6 or 10
  • the resource allocation of the NB-PDSCH is limited. Otherwise, a certain waste is allowed or a secondary timing indication is used to ensure that the NB-PDSCH resource allocation can use no more than N consecutive subframes. Any value.
  • n is the end of the search space.
  • n is the end subframe of the control region. (contains multiple search spaces)
  • the restricted set k is used for scheduling timing. If the starting subframe n+k of the NB-PDSCH is still determined according to the ending subframe n of the NB-PDCCH, the starting subframe determined by n+k is different because the different NB-PDCCH ends in the USS is different. The time domain is also different. In this case, the number of subframes occupied by the NB-PDSCH may no longer be a non-contiguous set of k values.
  • the number of NB-PDSCH occupied subframes still remains a limited set of values, so that the value range of k exceeds the set of restricted values. (Another possibility, the value of k is still a set of restricted values, and the number of subframes occupied by the NB-PDSCH exceeds the set of restricted values)
  • k Since the indication signaling is finite, k must be indicated in the restricted set of values. Since any sub-frame in the search space may be used as an n-subframe, the value of k is no longer a restricted set (regardless of whether the number of NB-PDSCH occupied sub-frames is a limited set of values), so the solution is as follows:
  • the search space is ⁇ 2, 4, 8 ⁇ or Rmax subframe (the search space configured by the Rmax base station through SIB or RRC)
  • the maximum number of repetitions of the downlink control channel is determined by the end subframe n of the USS.
  • the NB-PDSCH start subframe is n+k, and the timing interval k and the number of NB-PDSCH subframes can be guaranteed. Save control signaling overhead for a limited set of values.
  • the n subframes of different NB-PDSCHs are aligned to ensure that the timing interval k and the number of NB-PDSCH occupied subframes can be a limited set of values, which saves control signaling overhead.
  • No scheduling window fixed scheduling timing interval, using multiple narrowbands.
  • no scheduling window scheduling timing interval dynamic indication, using multiple narrowbands.
  • FIG. 14 is a schematic diagram of the scheduling timing interval determined by a fixed value when using multiple narrowbands according to a preferred embodiment of the present invention, as shown in FIG.
  • the base station configures a start subframe and a narrowband position of the search space where the NB-PDCCH is located, and the terminal can determine the end subframe n of the NB-PDCCH according to the NB-PDCCH detected by the search space.
  • the starting subframe of the corresponding NB-PDSCH is n+k.
  • the DCI is demodulated, and the starting subframe of the NB-PDSCH is determined according to the fixed scheduling timing interval.
  • the NB-PDSCH is received according to the PRB narrowband position indicated by the DCI and the number of occupied subframes.
  • the scheduling timing interval k can also be notified by the DCI, which increases scheduling flexibility and facilitates resource alignment in different narrowbands.
  • k is the same as in Example 3.
  • the present embodiment can implement a fixed timing interval by scheduling a plurality of narrowbands to avoid dynamically notifying the scheduling timing interval. It is necessary to additionally indicate the narrowband position where the NB-PDSCH is located. In addition, using DCI to dynamically inform the NB-PDSCH starting subframe position can make scheduling more flexible and facilitate resource alignment in each narrowband.
  • the scheduling timing interval is implicitly determined, using multiple narrowbands.
  • the base station configures a starting subframe and a narrowband position of the search space where the NB-PDCCH is located, and the terminal detects its own NB-PDCCH in the search space, and determines the ending subframe n of the search space according to the search space configured by the base station.
  • the starting subframe of the corresponding NB-PDSCH is n+k.
  • the DCI is demodulated, and the starting subframe of the NB-PDSCH is determined according to the implicitly determined scheduling timing interval.
  • NB-PDSCH according to the PRB narrowband position indicated by the DCI and the number of occupied subframes Receive.
  • the present embodiment can implement a fixed timing interval by scheduling a plurality of narrowbands to avoid dynamically notifying the scheduling timing interval. It is necessary to additionally indicate the narrowband position where the NB-PDSCH is located.
  • the advantage compared with the embodiment 5 is that the resources occupied by the respective channels are aligned in the time domain, and each channel occupies the subframe length by a power of two.
  • Embodiment 7-9 is a method for determining an uplink scheduling timing interval.
  • the k value is implicitly determined by the RA.
  • the scheduling window or scheduling period is the same as in Embodiment 1.
  • the search space where the downlink control channel is located is configured by the base station, and different search spaces are concentrated in the first X subframes in the scheduling window.
  • resource allocation is used.
  • the resource allocation bit field is 8 bits), and the starting position and occupation of the integer multiple of RU in the scheduling window are implemented.
  • the resource allocation indicates the number of consecutive subframes and the frequency domain position in the scheduling window on the time domain.
  • FIG. 16 is a schematic diagram of implicitly determining the scheduling timing interval by the resource allocation in the scheduling window or the scheduling period according to a preferred embodiment of the present invention. Schematic diagram, as shown in Figure 16. That is, the starting subframe of the NB-PUSCH is the first subframe in the contiguous subframe occupied by the NB-PUSCH determined by the resource allocation.
  • the NB-PUSCH may be scheduled to occupy resources in the next scheduling window in consideration of the offset value; or the resource allocation may occupy multiple scheduling windows.
  • the scheduling timing interval k can achieve any value within the length of the scheduling window. And without separate indication, the resource allocation, the starting subframe position and the number of subframe occupations are jointly coded, which saves control signaling overhead.
  • NB-PUSCH supports subcarrier level scheduling.
  • Fixed k caused a waste of control resources or NB-PDSCH collision.
  • a variable value of k is required.
  • the base station configures a starting subframe of the search space where the NB-PDCCH is located, and the terminal can detect its own NB-PDCCH in the corresponding search space according to the starting subframe of the search space.
  • the end subframe n of the NB-PDCCH can be determined.
  • the starting subframe of the corresponding NB-PUSCH is n+k. Since there is no scheduling window to limit the resource allocation range, it is necessary to indicate the starting subframe of the NB-PUSCH, the number of occupied subframes, and the frequency domain location.
  • FIG. 17 is a second schematic diagram of the scheduling timing interval determined by the DCI dynamic indication, as shown in FIG. 17, in accordance with a preferred embodiment of the present invention.
  • range of values of k includes one of the following conditions:
  • the number of subframes occupied by the NB-PUSCH can be any value within K.
  • the control overhead indicating the timing interval k is large.
  • the value of K requires a certain scheduling period, that is, similar to Embodiment 1, it is necessary to have one scheduling period, and k is indicated in the scheduling period.
  • K is at least one of the set ⁇ 16, 32, 64, 128, 256, 512, 768, 1024, 1280, 1536, 1792, 2048 ⁇ .
  • (2) k is a non-continuous value, that is, the range of k is a subset of (1), such as ⁇ 1, 2, 4, 8, 16, 32, 64...K ⁇ or ⁇ 1, 2. 3, 5, 9, 17, 33...K ⁇ , K has the same meaning as above. Ensure a certain flexibility while reducing the indication signaling overhead.
  • the value of k is non-contiguous, the number of subframes occupied by the NB-PDSCH is actually limited. That is, the number of consecutive subframes occupied by one TB block of the NB-PUSCH is also a non-contiguous set of values, such as ⁇ 1 , 2, 4, 8, 16, 32 ⁇ . That is, the timing interval k value set and the NB-PDSCH possible resource allocation size are mutually constrained.
  • k is a non-continuous value, that is, the value range of k is a subset in (1), such as ⁇ 1, 2, 4, 8, 16, 32, 64...K ⁇ or ⁇ 1, 2. 3, 5, 9, 17, 33...K ⁇ . K has the same meaning as above. Ensure a certain flexibility while reducing the indication signaling overhead.
  • the value of k is non-contiguous, the number of subframes occupied by the NB-PUSCH is actually limited. That is, the number of consecutive subframes occupied by one TB block of the NB-PDSCH is also a non-contiguous set of values, such as ⁇ 1 , 2, 4, 8, 16, 32 ⁇ .
  • the end subframe position of the NB-PDCCH is an arbitrary position in the search space. Therefore, when the NB-PDSCH start subframe is indicated, in order not to limit the value set, a secondary indication is performed, for example, the k2 value set is ⁇ 0. , 1, 2, 3 ⁇ or ⁇ 0, 1, 2, 3, 4, 5, 6, 7 ⁇ , so that the NB-PUSCH value set is a continuous value.
  • the X bit is still required to indicate the number of subframes occupied by the PDSCH. If 3 bits are used, it indicates that the PDSCH occupies a resource allocation that is continuous and does not exceed 6 subframes/PRB.
  • the used subframe n that determines the timing interval may also be the last subframe in the search space.
  • the feature of the scheme is that the scheduling timing interval k and the number of subframes occupied by the NB-PUSCH are directly indicated by the DCI, and an arbitrary value of k is required, and the control signaling overhead is large.
  • the timing interval k and the number of NB-PUSCH occupied subframes can be a limited set of values, which saves control signaling overhead.
  • the scheduling timing interval takes a fixed value according to the NB-PDCCH end subframe, and uses multiple narrowbands.
  • scheduling timing interval is implicitly determined.
  • a fixed value is used according to the end of the search space where the NB-PDCCH is located, and multiple narrowbands are used.
  • the scheduling timing interval is indicated by DCI, and multiple narrowbands are used.
  • NB-PUSCH supports subcarrier level scheduling.
  • the scheduling timing interval k is implicitly determined or indicated by the DCI.
  • the narrowband time scheduling timing interval is determined by a fixed subframe offset value of the search space where the NB-PDCCH is located or dynamically indicated by the DCI, as shown in FIG. 18.
  • the indication by the DCI includes: the timing interval determines the starting subframe n+k of the NB-PUSCH according to the ending subframe n of the NB-PDCCH, where k is indicated by the DCI, and the non-fixed value has a set of values, as shown in FIG. .
  • the base station configures the start subframe and the narrowband position of the search space where the NB-PDCCH is located, and the terminal detects its own NB-PDCCH in the search space, (1) according to the end subframe n of the NB-PDCCH, and the corresponding NB-
  • the starting subframe of the PUSCH is n+k, and k is a fixed value.
  • the end subframe n of the search space is determined according to the search space configured by the base station. At this time, the starting subframe of the corresponding NB-PUSCH is n+k, and k is a fixed value.
  • the scheduling timing interval k is determined according to the bit field in the DCI.
  • the DCI is demodulated according to (1) fixed; (2) implicitly determined; (3) the bit field dynamic indication in the DCI determines the scheduling timing interval, thereby determining the start of the NB-PUSCH Subframe.
  • the NB-PUSCH is received according to the PRB narrowband position indicated by the DCI and the number of occupied subframes and the frequency domain position.
  • the present embodiment can implement fixed or variable timing intervals by scheduling multiple narrowbands, avoiding dynamic notification of scheduling timing intervals or ensuring resource alignment by dynamic notification flexible scheduling. It is necessary to additionally indicate the narrowband position where the NB-PDSCH is located. Each channel occupies a sub-frame length with a power of two.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method of various embodiments of the present invention.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store program code for performing the following steps:
  • S2 Determine a scheduled narrowband downlink traffic channel NB-PDSCH or a start subframe of a narrowband uplink traffic channel NB-PUSCH by demodulating the narrowband physical downlink control channel NB-PDCCH, and use the starting subframe as a scheduling timing interval.
  • a starting point where the basis for determining the starting subframe includes at least one of: an ending subframe of the NB-PDCCH, an ending subframe of a search space where the NB-PDCCH is located, a resource allocation in a scheduling window, and a scheduling timing interval.
  • the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • a mobile hard disk e.g., a hard disk
  • magnetic memory e.g., a hard disk
  • the processor performs the method steps of the foregoing embodiments according to the stored program code in the storage medium.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the foregoing technical solution provided by the embodiment of the present invention may be applied to determine a scheduled narrowband downlink downlink traffic channel NB-PDSCH or a narrowband uplink traffic channel NB- by demodulating a narrowband physical downlink control channel NB-PDCCH in a process of determining a scheduling timing interval.
  • a start subframe of the PUSCH where the basis for determining the start subframe includes at least one of: an end subframe of the NB-PDCCH, an end subframe of a search space where the NB-PDCCH is located, and a scheduling window
  • the resource allocation and scheduling timing interval indication solves the problem of how to determine the scheduling timing in the narrowband system, saves the indication overhead, improves the resource usage efficiency, and solves the problem of resource waste caused by the resource imbalance caused by the fixed timing interval, and solves the problem. Blocking problem with continuous transmission.

Abstract

L'invention concerne un procédé et un appareil permettant de déterminer un intervalle de synchronisation de programme. Le procédé consiste à : démoduler un canal de commande de liaison descendante physique à bande étroite (NB-PDCCH) afin de déterminer une sous-trame de début d'un canal de service de liaison descendante à bande étroite (NB-PDSCH) programmé ou d'un canal de service de liaison montante à bande étroite (NB-PUSCH) programmé, la détermination du début de la sous-trame étant basée sur au moins l'un des éléments suivants : une sous-trame de fin du NB-PDCCH, une sous-trame de fin d'un espace de recherche dans lequel se trouve le NB-PDCCH, l'attribution de ressources dans une fenêtre de programmation et une instruction d'intervalle de synchronisation de programme. Au moyen de ces solutions techniques, le problème lié au mode de détermination de la synchronisation de programmation dans un système à bande étroite est résolu, les surdébits d'instruction sont réduits et l'efficacité d'utilisation de ressources est améliorée.
PCT/CN2016/111357 2016-02-05 2016-12-21 Procédé et appareil de détermination d'intervalle de synchronisation de programme WO2017133339A1 (fr)

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EP16889145.5A EP3413646B1 (fr) 2016-02-05 2016-12-21 Procédé et appareil pour déterminer l'écart de programmation
US16/074,061 US10849144B2 (en) 2016-02-05 2016-12-21 Method and apparatus for determining the scheduling gap
KR1020187025459A KR102643922B1 (ko) 2016-02-05 2016-12-21 스케줄링 갭을 결정하기 위한 방법 및 장치
JP2018540418A JP7058605B2 (ja) 2016-02-05 2016-12-21 スケジュールタイミング間隔を判定するための方法および装置
EP22158355.2A EP4075900A1 (fr) 2016-02-05 2016-12-21 Procédé et appareil de détermination de l'intervalle de programmation
US16/952,772 US11706787B2 (en) 2016-02-05 2020-11-19 Method and apparatus for determining the scheduling gap

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CN201610222408.2A CN107046722B (zh) 2016-02-05 2016-04-11 调度定时间隔的确定方法及装置
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