WO2017133339A1

WO2017133339A1 - Method and apparatus for determining schedule timing interval

Info

Publication number: WO2017133339A1
Application number: PCT/CN2016/111357
Authority: WO
Inventors: 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
Priority date: 2016-02-05
Filing date: 2016-12-21
Publication date: 2017-08-10

Abstract

Provided are a method and apparatus for determining a schedule timing interval. The method comprises: demodulating a narrowband physical downlink control channel (NB-PDCCH) to determine a starting subframe of a scheduled narrowband downlink service channel (NB-PDSCH) or narrowband uplink service channel (NB-PUSCH), wherein the basis for determining the starting sub frame comprises at least one of the following: an ending subframe of the NB-PDCCH, an ending sub frame of a search space in which the NB-PDCCH is located, resource allocation within a scheduling window and a schedule timing interval instruction. By means of the technical solutions, the problem of how to determine scheduling timing in a narrowband system is solved, the instruction overheads are saved, and the resource usage efficiency is improved.

Description

Method and device for determining scheduling timing interval

Technical field

The present invention relates to the field of communications, and in particular, to a method and apparatus for determining a scheduling timing interval.

Background technique

Machine Type Communication (MTC), also known as Machine to Machine (M2M), Narrow Band Internet of Things (NB-IoT) 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.

At present, there are three working scenarios in the NB-IoT system (in-band in the LTE system band, guard-band in the LTE system, and standalone in the independent band). Such communication systems typically require either independent operation or coexistence with an LTE system. 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. In the system, the related design of the existing LTE system is reused. When 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.

In the related art, 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). 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). In the LTE system, 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.

In the related art, since 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.

In view of the related art, how to determine the scheduling timing in a narrowband system, there is currently no effective solution.

Summary of the invention

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.

According to an embodiment of the present invention, a method for determining a scheduling timing interval is provided, including:

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 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.

Further, in a case where the initial subframe of the NB-PDSCH or the NB-PUSCH is determined according to the end subframe of the NB-PDCCH, a fixed scheduling timing interval is used.

Further, when a plurality of NB-PDSCHs are supported in one physical resource block PRB pair, when the initial subframe of the NB-PDSCH is determined by using the fixed scheduling timing interval, the downlink control information DCI or implicit is used. The determining mode indicates the location of the NB-PDSCH in one physical resource block PRB.

Further, when 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.

Further, when the start subframe of the NB-PDSCH or the NB-PUSCH is determined according to the end subframe of the NB-PDCCH and the scheduling timing interval indication, 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.

Further, 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, and 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.

Further, 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 .

Further, when the value set is implicitly determined to be different according to the maximum number of repetitions Rmax configured in the high layer signaling or the number of repetitions indicated in the DCI, 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:

Use a multiple of Rmax/i;

Use at least two multiples of Rmax/i.

Further, according to the preset or configured threshold value Rmax=C, when Rmax is greater than or equal to C and Rmax is less than C, respectively, the set of values of the two sets of scheduling timing intervals are respectively used.

Further, the value of the set of values includes at least one of the following:

Use the same multiple of Rmax/i, using different common factors;

Use a different multiple of Rmax/i, using the same common factor representation;

One group does not use a multiple of Rmax/i, and the other group uses a multiple of Rmax/i.

Further, the value of the element in the set of values includes at least one of the following manners:

2 ^x , where 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, ...};

An integer multiple of the number of subframes occupied by a transport block; if a transport block occupies a maximum of 6 subframes, the value elements may be {6, 12, 18, 24, ....};

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.

Further, 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.

Further, when the starting subframe of the NB-PDSCH or the NB-PUSCH is determined according to the resource allocation in the scheduling window, 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.

Further, when the start 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-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.

Further, when 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.

Further, 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.

Further, 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};

R=Rin×Rout;

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.

Further, 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:

Coding with the starting subframe within a predetermined indication range, using continuous resource allocation;

The elements in the finite value set are consecutive values or interval values.

Further, 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:

All OFDM symbols occupying the same continuous or non-contiguous 6 subcarriers in all orthogonal frequency division multiplexing;

Different non-contiguous 6 subcarriers are occupied in different OFDM symbols;

Different consecutive 6 subcarriers are occupied in different OFDM symbols.

Further, 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 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;

When the number of repetitions is greater than or equal to the threshold value Rx, 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.

Further, 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.

Further, the length of the uplink scheduling window is the same as the length of the downlink scheduling window, and is fixed or unified. Alternatively, the uplink scheduling window length and the downlink scheduling window are independently configured or take different fixed values.

Further, 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.

Further, when the starting subframe is determined according to the period T and the offset value offset, 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.

Further, when the starting subframe is determined according to the maximum number of repetitions, at least one of the following manners is included:

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 For continuous values or intervals, the values are consecutive, for example, {1, 2, 3, 4...}, and the intervals are, for example, {1, 2, 4, 8...}.

Further, 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;

Different sets of values are distinguished according to the threshold value Rmax=D, where D is a fixed constant or a constant configured by a higher layer signaling.

Further, 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.

Further, 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:

Configure whether to perform discontinuous transmission, and the discontinuous transmission method implicitly determines;

Configure the number of intervals for discontinuous transmission, and the interval position is implicitly determined;

Configure the preset period and the interval position within the period;

Configure a preset period, and the period size is equal to the interval size;

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.

Further, when the preset period is configured, and the interval position in the period, 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. Or joint coding configuration, where i is an integer from 1 to 8.

Further, 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.

According to another embodiment of the present invention, a determining apparatus for scheduling a timing interval is further provided, 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.

In an embodiment of the present invention, 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.

According to the embodiment of the present invention, 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.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a flowchart of a method for determining a scheduling timing interval according to an embodiment of the present invention;

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;

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;

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;

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;

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;

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;

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;

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;

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;

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;

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;

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.

Detailed ways

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

In this embodiment, a method for determining a scheduling timing interval is provided. 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.

Through the above steps, 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.

In an embodiment of the present invention, in a case where the initial subframe of the NB-PDSCH or the NB-PUSCH is determined according to the end subframe of the NB-PDCCH, a fixed scheduling timing interval is used.

In the embodiment of the present invention, when multiple NB-PDSCHs are supported in one physical resource block PRB pair, when the initial subframe of the NB-PDSCH is determined by using the fixed scheduling timing interval, the downlink control information DCI is adopted. Or implicitly determining the location of the NB-PDSCH in one physical resource block PRB.

In the embodiment of the present invention, 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.

In the embodiment of the present invention, when the start subframe of the NB-PDSCH or the NB-PUSCH is determined according to the end subframe of the NB-PDCCH and the scheduling timing interval indication, the set of the scheduling timing interval used is a finite value, Value collection The value of the element is continuous or interval, 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 indicates that the end subframe of the NB-PDCCH is to the NB-PDSCH or The starting subframe of the NB-PUSCH.

In an embodiment of the present invention, 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, and the first level indication of the two-level indication is a single indication parameter, and 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.

In the embodiment of the present invention, 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.

In the embodiment of the present invention, when the value set is implicitly determined to be different according to the maximum number of repetitions Rmax configured in the high layer signaling or the number of repetitions indicated in the DCI, 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:

Use a multiple of Rmax/i; for example, use only Rmax/8 as a multiple, using the same common factor ki={k1, k2, k3, k4, k5, k6, k7, k8} indicated by 3bits as ki*Rmax /8 or ki*Rmax/8+4. K1~k8 are continuous and non-continuous values, and can also be determined by single or two-level indication. Preferably, 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}

Use at least two multiples of Rmax/i. For example, as a multiple of the different levels in the two-level indication, for example, {0, 1, 2, 3*Rmax/4}+{0, Rmax/8}={0, 1, 2, 3, 4, 5, 8 , 9}Rmax/8; {0, 1, 2, 3*Rmax/2}+{0, Rmax/8}={0, 1, 4, 5, 8, 9, 12, 13} Rmax/8; {k1, k2, k3, k4}+{0, ki/2}, where k4=Rmax, k3=k4/2, k2=k4/4, when k1=k4/8, ={1, 3/2, 2,3,4,6,8,12}Rmax/8; {k1, k2, k3, k4}+{0, ki/2}, where k4=8*Rmax/8, k3=k4/2, k2 =k4/4, when k1=0, ={0, 1, 2, 3, 4, 6, 8, 12} Rmax/8.

In the embodiment of the present invention, according to 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:

Use the same multiple of Rmax/i, using different common factors; for example, in the same Rmax/8 as a multiple, the two sets of values are (k1 ~ k7) * Rmax / 8; (y1 ~ y7) * Rmax /8. For example: 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.

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. For example, 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. For example, the same common factor (k1 ~ k7), the larger Rmax with absolute value, the smaller Rmax with Rmax / 8, one set for (k1 ~ k7) * D; the other group for (k1 ~ K7) *Rmax/8.

Wherein, if Rmax/8 is less than 1, the unified up is rounded to 1.

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. For example, for the DCI transmitted in the CSS, 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. For example, 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. For example, when 4 values are used, k4=kmax is configured by the eNB, k3=k4/2, k2= K4/4, k1=k4/8, the possible set of values of kmax is {4, 8, 16, 32, 64, 128, 256} or a subset thereof. When configured through RRC, 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. For example, when determining a downlink scheduling timing interval, the DCI indicates that the NB-PDSCH repetition number is R=256. , then kmax = R or R / 2 or R / 4 or R / 8 and so on. For 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. When the two-level indication is added, 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 above combinations is listed as follows: For example, when k4=32 is configured or implicitly, when the second level indicates {0, 1, 2, 3}, the two-stage addition method is used to schedule the timing value set. 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.

Or 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. Preferably, the larger first level indicates that the corresponding second level indicates a larger granularity. Taking a 2-bit first-level indication and a 2-bit second-level indication as an example, if the first-level indication is ki (i=1, 2, 3, 4), the second-level indication is {0, 1x, 2x, 3x} , where x=ki/4 or ki/2 or ki.

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. When the two-level indication is used, the first level refers to The k4 is different, and the subsequent k1-k3 implicitly obtain different ways. For example, the timing interval value set of the scheduling Paging is k3=k4/4, k2=k4/16, k1=k4/64; scheduling unicast service In the timing interval value set, k3=k4/2, k2=k4/4, k1=k4/8; (Case 2) 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. Preferably, when the uplink NB-PUSCH scheduling timing interval is determined by the two-level indication, the first level indication unit is a resource unit, and the second level indication unit is a subframe.

In an embodiment of the present invention, the value of the element in the set of values includes at least one of the following manners:

2 ^x , where x is at least one of the set {0, 1, 2, 3, ..., 20};

In an embodiment of the present invention, 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.

It should be noted that 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 uplink 3.75 kHz sub-carrier spacing is different from the maximum value corresponding to the uplink 15 kHz sub-carrier spacing.

In the embodiment of the present invention, when the starting subframe of the NB-PDSCH or the NB-PUSCH is determined according to the resource allocation in the scheduling window, 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. Or the starting subframe of the NB-PUSCH,

It should be noted that the above scheduling window can also be expressed by other terms, such as scheduling period, resource allocation period, and resource division. Distribution range, etc.

In the embodiment of the present invention, 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.

In an embodiment of the present invention, when 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.

In the embodiment of the present invention, 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.

In the embodiment of the present invention, the R, Rin, Rout, and Rx value determining manners include at least one of the following:

R=Rin×Rout;

For example, 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;

For example, in the window with a scheduling window length of 32 ms, it is determined by the resource allocation that the NB-PDSCH occupies the 6th-11th subframe, and the 3-bit information in the DCI indicates the value set {1, 2, 4, 8, 16, 32, 64, R=32 in 128} is used for NB-PDSCH transmission, mode 1 is repeated transmission in 32 scheduling windows, and the same subframe position is occupied in each window; mode 2 is that the base station re-notifies the scheduling window to repeat Rin=4 Times, Rout is implicit by Rmax/Rin=8

At this time, the NB-PDSCH repeats transmission in 8 scheduling windows and repeats transmission 4 times in the scheduling window.

In an embodiment of the present invention, 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:

It is indicated separately in the finite value set that the elements in the finite value set are consecutive values or intervals.

In an embodiment of the present invention, 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:

Different non-contiguous 6 subcarriers are occupied in different OFDM symbols;

Different consecutive 6 subcarriers are occupied in different OFDM symbols.

It should be noted that the NB-CCE occupies different resources in a subframe or an OFDM symbol according to different cell IDs. For example, 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.

It should be noted that 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.

In the embodiment of the present invention, 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:

In an embodiment of the present invention, 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 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.

In the embodiment of the present invention, the length of the uplink scheduling window is the same as that of the downlink scheduling window, and is fixed or unified. Alternatively, the uplink scheduling window length and the downlink scheduling window are independently configured or take different fixed values.

For example, when a RU occupies 32 ms, 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}.

In the embodiment of the present invention, 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.

In the embodiment of the present invention, when the starting subframe is determined according to the period T and the offset value offset, the starting subframe position, the position of the starting subframe plus the offset value, or the starting subframe minus the offset The position of the value 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.

It should be noted that the 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.

Preferably k mode N=0, or (k–offset)mode N=0, or (k+offset)mode N=0

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, and offset represents the offset value.

In the embodiment of the present invention, when the starting subframe is determined according to the maximum number of repetitions, at least one of the following manners is included:

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...}.

In an embodiment of the present invention, 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;

Different sets of values are distinguished according to the threshold value Rmax=E, where E is a constant constant or a constant of high-level signaling configuration.

For example, {1, 2, 3, 4, 5, 6, 8, 10}, {2, 4, 6, 8, 10, 16, 24, 32}, {1.5, 2, 3, 4, 5, 6, 8, 10}, {1.5, 2, 4, 6, 8, 10, 12, 16}, wherein the constant m is preferably 4. Different sets of values are distinguished according to the threshold value Rmax=E. When Rmax>=E or Rmax>E, the value set is X1, and when Rmax<E or Rmax<=E, the value set is X2, and the minimum value of X1 Less than the minimum value in X2; or X1 contains a decimal, X2 does not contain a decimal; the maximum in X1 is less than the maximum in X2;

In the embodiment of the present invention, the value set corresponding to the USS and the CSS is different, wherein the CSS is used for the access process. In the CSS, the set of values includes at least one of the following:

The CSS value set does not contain a non-positive integer;

For example, 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}.

In the embodiment of the present invention, when the configuration period and the interval position in the period, 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. Where i is an integer from 1 to 8.

As shown in the example in Table 1, in the joint coding configuration, the interval size values included in different periodic configurations are different, and the interval size is not greater than its corresponding period value.

Table 1

IndexIndex	周期 cycle		Gap大小Gap size
00	6464	4848
11	6464	3232
22	6464	1616
33	6464	88
44	3232	24twenty four
55	3232	1616
66	3232	88
77	1616	88

In an embodiment of the present invention, 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.

For example, the threshold value is 64. When Rmax>=64, the period maximum value is 64, and the gap size maximum value is less than 64.

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:

(1) Only configure whether to perform discontinuous transmission, and the discontinuous transmission mode implicitly determines.

For example, 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.

(2) Configure the number of intervals for discontinuous transmission, and the interval position is implicitly determined.

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, 3 Indicates that there are 7 intervals and the interval is between Rmax/8 and the interval size is Rmax/8.

(3) Configure the preset period and the interval position within the period.

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. As shown in FIG. 3, 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. When the NB-PDCCH or NB-PDSCH repeated transmission encounters a Gap and no transmission is completed, the Gap is skipped. 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...

(4) Configure a preset period, and the period size is equal to the interval size.

4 is a schematic diagram of configuring a preset period, and the period size is equal to the interval size, as shown in FIG. 4, defining a uniform interval value, and the interval value = period value, in accordance with a preferred embodiment of the present invention. The NB-PDCCH (also called NPDCCH, which refers to the physical downlink control channel of the NB-IoT) and/or the NB-PDSCH, when the repeated transmission is encountered as long as the Gap boundary is encountered and no transmission is completed, the Gap is automatically skipped and the transmission is continued. 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.

(5) 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.

It should be noted that the method for determining the scheduling timing interval of the foregoing embodiment may be applied to the terminal, or stand on.

In the present embodiment, 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. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although 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.

Through the above apparatus, 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.

In the above apparatus, 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.

In the embodiment of the present invention, when the start subframe of the NB-PDSCH or the NB-PUSCH is determined according to the end subframe of the NB-PDCCH and the scheduling timing interval indication, 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.

In an embodiment of the present invention, the scheduling timing interval indication includes one of the following modes: a single indication, and two levels of Show,

2 ^x , where x is at least one of the set {0, 1, 2, 3, ..., 20};

coverage levels

0 and 1 are the same, and the maximum values corresponding to

coverage levels

It should be noted that the above 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.

In the embodiment of the present invention, 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.

R=Rin×Rout;

Different non-contiguous 6 subcarriers are occupied in different OFDM symbols;

Different consecutive 6 subcarriers are occupied in different OFDM symbols.

This length satisfies an integer multiple of the length of the radio frame.

For example, when one RU occupies 32 ms, 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}.

Preferably k mode N=0, or (k–offset)mode N=0, or (k+offset)mode N=0

The invention will now be described in detail in conjunction with the preferred embodiments and embodiments.

In the above embodiment, the NB-CCE specifically occupied by the NB-PDCCH in one PRB pair or one subframe includes one of the following modes:

The same contiguous or non-contiguous 6 subcarriers are occupied in all OFDM symbols; in particular, 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). 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}.

Different non-contiguous 6 subcarriers are occupied in different OFDM symbols; specifically, 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.

Different OFDM symbols occupy different consecutive 6 subcarriers; specifically, the REs used by the two NB-CCEs can ensure that the SFBC pair is a neighboring RE and the NB-CCE occupies 6 consecutive subcarriers, but the NB-CCE is different. The contiguous 6 subcarriers occupied by the OFDM symbols are different. For example, an odd OFDM symbol uses the same 6 subcarriers, and an even OFDM symbol uses another 6 carriers. 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. 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 For each subcarrier, 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 number of candidate sets for different aggregation levels at different repetition times is 1; for example: {L, R, number of candidate sets} = [{1, R1, 1}, {1, R2, 1}, {1, R3, 1}, {1, R4, 1}, {2, R1, 1}, {2, R2, 1}, {2, R3, 1}, {2 , R4, 1}] or {L, R, number of candidate sets} = [{2, R1, 1}, {2, R2, 1}, {2, R3, 1}, {2, R4, 1}]

Different aggregation levels have different number of candidate sets at different repetition times; for example: {L, R, number of candidate sets}=[{1,1,16}, {2,1,8}, {2,2,4} , {2, 4, 2}, {2, 8, 1}] or [{2,1,4}, {2,2,4}, {2,4,1}, {2,8,1} ]

The number of candidate sets corresponding to aggregation level 1 is greater than 1; {L, R, number of candidate sets} = for example: {L, R, number of candidate sets} = [{1, R1, 16}, {2, R1, 8}, {2, R2, 4}, {2, R3, 2}, {2, R4, 1}] or [{1, R1, 16}, {2, R1, 8}, {2, R2, 1}, {2, R3, 1}, {2, R4, 1}] or [{1,1,8}, {2,1,4}, {2,2,2}, {2,4,1}] Or [{1, R1, 4}, {1, R2, 2}, {1, R3, 1}, {1, R4, 1}, {2, R1, 1}, {2, R2, 1}, {2, R3, 1}, {2, R4, 1}]

The number of candidate sets corresponding to the non-maximum number of repetitions is greater than 1; for example: {L, R, number of candidate sets} = [{1, R1, 8}, {1, R2, 4}, {1, R3, 2} , {1, R4, 1}, {2, R1, 8}, {2, R2, 4}, {2, R3, 2}, {2, R4, 1}] or {L, R, number of candidate sets }=[{2,R1,8}, {2,R2,4}, {2,R3,2},{2,R4,1}]

When the number of repetitions is greater than or equal to the threshold value Rx, 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. For example: {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}, {2,4,1}].

It should be noted that 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

Specifically, if the search space only includes one or two aggregation levels, the number of repetitions corresponding to the aggregation level is, for example, R1, R2, R3, and R4, where 8R1=4R2=2R3=R4, and at least one of the non-maximum repetition times corresponds to 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}. The search space range is 1 PRB in the frequency domain, and the maximum number of repetitions Rmax=R4 configured for the base station in the time domain. Wherein AL=1 repeats R2 and AL=2 repeats R1 is equivalent, so it may be unsupported when AL=1 repetition times are greater than R1, or only AL=1 is used in a non-repetitive manner. The specific composition of several search spaces is as follows: (where R4 ≥ 8)

{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}

{2, R1, 8}, {2, R2, 4}, {2, R3, 2}, {2, R4, 1}]

{L,R, number of candidate sets}=[{1,R1,8}

{2, R1, 8}, {2, R2, 4}, {2, R3, 2}, {2, R4, 1}]

{L,R, number of candidate sets}=[{1,1,8}

{2, R1, 8}, {2, R2, 4}, {2, R3, 2}, {2, R4, 1}]

{L,R, number of candidate sets}=[{1,1,2}

{2, R1, 8}, {2, R2, 4}, {2, R3, 2}, {2, R4, 1}]

Or, in order to consider the blind detection complexity of the terminal, the number of repetitions is a non-maximum repetition number, and the specific number of candidate sets is configured by RRC or SIB signaling. Or for AL = 2, the number of candidate sets for all R is 1. Or, the candidate set corresponding to the non-maximum R corresponding to AL=1 or AL=2 is limited. If the number of candidate sets is greater than 1 when R is less than Rx, the number of candidate sets is greater than 1 when Rx is greater than Rx.

The specific 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}]

{2, R1, 1}, {2, R2, 1}, {2, R3, 1}, {2, R4, 1}]

{L, R, number of candidate sets} = [{1, R1, 8}, {1, R2, 1}, {1, R3, 1}, {1, R4, 1}

{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, 1}, {1, R4, 1}

{2, R1, 8}, {2, R2, 4}, {2, R3, 1}, {2, R4, 1}]

{L, R, number of candidate sets} = [{1, R1, 4}, {1, R2, 2}, {1, R3, 1}, {1, R4, 1}

{2, R1, 2}, {2, R2, 2}, {2, R3, 1}, {2, R4, 1}]

{L, R, number of candidate sets} = [{1, R1, 2}, {1, R2, 1}, {1, R3, 1}, {1, R4, 1}

{2, R1, 1}, {2, R2, 1}, {2, R3, 1}, {2, R4, 1}]

{L, R, number of candidate sets} = [{1, R1, 2}, {1, R2, 2}, {1, R3, 2}, {1, R4, 2}

{2, R1, 1}, {2, R2, 1}, {2, R3, 1}, {2, R4, 1}]

{L, R, number of candidate sets} = [{1, R1, 1}, {1, R2, 1}, {1, R3, 1}, {1, R4, 1}

{2, R1, 1}, {2, R2, 1}, {2, R3, 1}, {2, R4, 1}]

{L,R, number of candidate sets}=[{1,R1,8}

{2, R1, 4}, {2, R2, 2}, {2, R3, 2}, {2, R4, 1}]

{L,R, number of candidate sets}=[{1,R1,8}

{2, R1, 1}, {2, R2, 1}, {2, R3, 1}, {2, R4, 1}]

{L,R, number of candidate sets}=[{1,R1,2}

{2, R1, 1}, {2, R2, 1}, {2, R3, 1}, {2, R4, 1}]

{L,R, number of candidate sets}=[{1,1,8}

{2, R1, 8}, {2, R2, 4}, {2, R3, 2}, {2, R4, 1}]

{L,R, number of candidate sets}=[{1,1,8}

{2, R1, 1}, {2, R2, 1}, {2, R3, 1}, {2, R4, 1}]

{L,R, number of candidate sets}=[{1,1,2}

{2, R1, 1}, {2, R2, 1}, {2, R3, 1}, {2, R4, 1}]

It should be noted that R1 to R4 are exemplified above, and other numbers of repetition numbers such as R1-R2 and R1-R8 may be used.

In particular, when the Rmax is 1 or 2 or 4 or 8, the time is mainly used for the normal coverage scenario, and more users need to be supported. Therefore, 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:

If Rmax=1, the candidate set {L, R, the number of candidate sets}=[{1,1,2}, {2,1,1}];

If Rmax=2, the candidate set {L, R, the number of candidate sets}=[{1,1,2}, {2,1,2}, {2,2,1}]; or [{1,1 , 4}, {2, 1, 2}, {2, 2, 1}]

If Rmax=4, the candidate set {L, R, the number of candidate sets}=[{1,1,2}, {2,1,4}, {2,2,2}, {2,4,1} ]; or [{1,1,8}, {2,1,4}, {2,2,2}, {2,4,1}]; or [{1,1,8}, {2, 1,4}, {2,2,1}, {2,4,1}]

If Rmax=8, the candidate set {L, R, the number of candidate sets}=[{1,1,2}, {2,1,8}, {2,2,4}, {2,4,2} , {2,8,1}]; or [{1,1,16}, {2,1,8}, {2,2,4}, {2,4,2}, {2,8,1 }]; or [{1,1,16}, {2,1,8}, {2,2,1}, {2,4,1}, {2,8,1}]

Example 1

Based on the scheduling window or scheduling period, 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. The optional T value is an integer multiple of the radio frame, such as T=k×10ms; or the window length T=k×2.^x ms, x={0,1,2,3,5}, k=1 , 2,...,K. 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}. When determining the window length T, it is preferable that x=5, k=1, and T=32. Preferably, the possible window length is at least one of the set {16, 32, 64, 128, 256, 512, 768, 1024, 1280, 1536, 1792, 2048}. In the base station When set, 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 following takes the scheduling window as an example for explanation.

In the scheduling window, 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. Scheduling the corresponding PDSCH in the same scheduling window, using resource allocation type 2 or continuous length limited resource allocation type 2 (such as allocation of PDSCH resource allocation with no more than 6 consecutive occupied subframes in window length T=32ms, this Resource allocation

In the scheduling window

The resource allocation bit field is 8 bits), which implements any starting position and occupancy in the scheduling window. At this time, the resource allocation indicates the number and position of consecutive subframes occupied in the scheduling window on the time domain.

At this time, 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.

Advantages of the scheme: 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.

Example 2

Based on the scheduling window, the k value is implicitly determined by the RA. It is possible that one TB block of the NB-PDSCH exceeds the window length.

For the case where one TB block of the downlink service that may occur in Embodiment 1 exceeds the window length. For example: (1) 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. (2) Even if the maximum subframe occupied by the T>TB block is configured, because the control channel is repeatedly transmitted, or two or more NB-PDSCHs are scheduled, the number of subframes occupied by the allocated NB-PDSCH may also exceed the window length T.

Solutions include:

1. 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.)

2. Indicate the dispatch window offset. When the NB-PDSCH scheduled in the scheduling window W(i) needs to use more than the number of subframes remaining in the scheduling window, by additionally indicating the scheduling window offset value m, the scheduled NB-PDSCH can be located in the scheduling window and below. In a scheduling window, that is, the scheduling window is successively occupied, 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. . Wherein, 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.

Solution Advantages: Similar to Embodiment 1, 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.

Example 3

No scheduling window, based on DCI dynamic indication

For coverage enhanced repeated transmission, the NB-PDCCH fills the subframe set or PRB set of the search space, and k=1 is used at this time, that is, a fixed timing interval.

For normal coverage, if the search space supports only one subframe, it supports up to two NB-PDCCHs. At this time, k is fixed (such as k=1), and one NB-PDCCH is wasted. Or the NB-PDSCH supports resource elements of 6 subcarriers, and k=1 at this time, so that no resource waste is achieved. Of course, one subframe is occupied by one NB-PDCCH, and k=1 is scheduled to occupy the NB-PDSCH of the entire PRB.

In addition, whether the k is fixed or not, in the FDM multiplexing mode, 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.

For normal coverage, in the most general case, multiple candidate sets are supported in the search space, and 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.

First, 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. At the same time, the end subframe n of the NB-PDCCH can be determined. At this time, 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.

Second, after receiving the NB-PDCCH, the DCI is demodulated, and the scheduling timing interval k is obtained, that is, the scheduling timing interval is determined. 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.

Further, the range of values of k includes one of the following conditions:

(1) k is a continuous value, that is, k has a value range of k=0, 1, 2, 3, 4..., K. At this time, scheduling flexibility can be ensured, and the number of subframes occupied by the NB-PDSCH can be any value within K. However, the control overhead indicating the timing interval k is large. At this time, 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. For example, 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. 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}. 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.

(3) 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. In addition, it is considered that 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.

After determining the scheduling timing interval based on the dynamic indication, 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 feature of the scheme is that the scheduling interval interval k and the number of subframes occupied by the NB-PDSCH are directly indicated by the DCI, and the number of subframes occupied by the NB-PDSCH is not more than any value of N consecutive subframes (for example, N=6 or 10). Therefore, an arbitrary value of k is required, and the control signaling overhead is large. When a certain set of k values is limited, 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.

Example 4

There is no scheduling window, based on the DCI dynamic indication, while limiting the ending subframe n of the NB-PDCCH.

At this time, n is the end of the search space.

Or n is the end subframe of the control region. (contains multiple search spaces)

For the case (2) in which the value of k in Embodiment 3 is used, since 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.

As shown in FIG. 13, 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)

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:

(1) Define the search space with only 1 subframe. At this time, the NB-PDCCH end subframe n is uniquely determined, and the timing interval k and the number of NB-PDSCH occupied subframes can be a limited value set, which saves control signaling overhead.

(2) Defining the search space as {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.

Scenarios: Compared with the third embodiment, 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.

Example 5

No scheduling window, fixed scheduling timing interval, using multiple narrowbands. Or no scheduling window, scheduling timing interval dynamic indication, using multiple narrowbands.

Multiple candidate sets are supported in the search space, and the NB-PDSCH minimum resource unit is 1 PRB. Use a fixed scheduling timing interval k. For example, the value k=2, 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.

First, 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. At this time, the starting subframe of the corresponding NB-PDSCH is n+k.

Second, after receiving the NB-PDCCH, 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.

In addition, 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.

Example 6

Without a scheduling window, the scheduling timing interval is implicitly determined, using multiple narrowbands.

Multiple candidate sets are supported in the search space, and the NB-PDSCH minimum resource unit is 1 PRB. The scheduling timing interval k is implicitly determined. Determining the starting subframe n+k of the NB-PDSCH according to the ending subframe n of the search space where the NB-PDCCH is located, k is a fixed value, for example, taking a value of k=2, and FIG. 15 is a multi-use according to a preferred embodiment of the present invention. Schematic diagram of a schematic diagram of a narrowband-time scheduling timing interval determined by a fixed subframe offset value of a search space in which the NB-PDCCH is located, as shown in FIG.

First, 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. At this time, the starting subframe of the corresponding NB-PDSCH is n+k.

Second, after receiving the NB-PDCCH, 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.

Example 7

Based on the scheduling window or scheduling period, the k value is implicitly determined by the RA.

The scheduling window or scheduling period is the same as in Embodiment 1.

In the scheduling window, 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 corresponding NB-PUSCH is scheduled to be located in the next scheduling window, and the resource allocation type 2 or the continuous length limited resource allocation type 2 is used (for example, the PDSCH resource allocation in which the number of consecutive occupied subframes does not exceed 6 in the window length T=32 ms is allocated. At this time, resource allocation is used.

In the scheduling window

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. At this time, the resource allocation indicates the number of consecutive subframes and the frequency domain position in the scheduling window on the time domain.

At this time, the scheduling timing interval k does not need to be indicated, and is implicitly determined by the intra-window NB-PUSCH resource allocation. 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.

Similar to Embodiment 2, 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.

Advantages of the scheme: 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.

Example 8

No scheduling window, based on DCI dynamic indication.

For normal coverage, in the most general case, multiple candidate sets are supported in the search space, and 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.

First, 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. At the same time, the end subframe n of the NB-PDCCH can be determined. At this time, 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.

Secondly, after receiving the NB-PDCCH, the DCI is demodulated, and the scheduling timing interval k is obtained, that is, the tone is determined. Degree Timing Interval, 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.

Further, the range of values of k includes one of the following conditions:

(1) k is a continuous value, that is, k has a value range of k=0, 1, 2, 3, 4..., K. At this time, scheduling flexibility can be ensured, and the number of subframes occupied by the NB-PUSCH can be any value within K. However, the control overhead indicating the timing interval k is large. At this time, 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. For example, 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. Correspondingly, since 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.

(3) 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. Correspondingly, since 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}. In addition, it is considered that 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.

In addition, 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. By aligning the n subframes of different NB-PDSCHs, it is ensured that the timing interval k and the number of NB-PUSCH occupied subframes can be a limited set of values, which saves control signaling overhead.

Example 9

There is no scheduling window, and the scheduling timing interval takes a fixed value according to the NB-PDCCH end subframe, and uses multiple narrowbands.

There is no scheduling window, and the 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.

There is no scheduling window, the scheduling timing interval is indicated by DCI, and multiple narrowbands are used.

Multiple candidate sets are supported in the search space, while NB-PUSCH supports subcarrier level scheduling. The scheduling timing interval k is implicitly determined or indicated by the DCI.

The implicit determination manner includes: determining, according to the end subframe n of the NB-PDCCH, the starting subframe n+k of the NB-PUSCH, where k is a fixed value, for example, taking a value of k=4. Determining the starting subframe n+k of the NB-PUSCH according to the end subframe n of the search space where the NB-PDCCH is located, k is a fixed value, for example, taking a value of k=4, and FIG. 18 is a multi-use according to a preferred embodiment of the present invention. 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. .

First, 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. (2) 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. (3) The scheduling timing interval k is determined according to the bit field in the DCI.

Secondly, after receiving the NB-PDCCH, 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.

Through the description of the above embodiments, those skilled in the art can clearly understand that 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. Based on such understanding, 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.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, 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. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1, demodulating a narrowband physical downlink control channel NB-PDCCH;

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. Instructions.

Optionally, in this embodiment, 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. A variety of media that can store program code, such as a disc or a disc.

Optionally, in this embodiment, the processor performs the method steps of the foregoing embodiments according to the stored program code in the storage medium.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

It will be apparent to those skilled in the art that the various 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. Thus, the invention is not limited to any specific combination of hardware and software.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

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.

Claims

A method for determining a scheduling timing interval includes:

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 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.
The method of claim 1 wherein

In the case where the start subframe of the NB-PDSCH or the NB-PUSCH is determined according to the end subframe of the NB-PDCCH, a fixed scheduling timing interval is used.
The method of claim 2, wherein

When a plurality of NB-PDSCHs are supported in one physical resource block PRB pair, when the initial subframe of the NB-PDSCH is determined by using the fixed scheduling timing interval, the downlink control information DCI or the implicit determination mode is indicated. The location of the NB-PDSCH in one physical resource block PRB.
The method of claim 1 wherein

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 indication, where the scheduling timing interval indication indicates The end subframe of the search space where the NB-PDCCH is located to the start subframe of the NB-PDSCH or NB-PUSCH.
The method of claim 1 wherein

When the start subframe of the NB-PDSCH or the NB-PUSCH is determined according to the end subframe of the NB-PDCCH and the scheduling timing interval indication, the set of the scheduling timing interval used is a finite value, and the elements in the value set are taken The values are consecutive or spaced, 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 to the NB-PDSCH Or the starting subframe of the NB-PUSCH.
The method according to claim 4 or 5, wherein

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, and 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 method of claim 6 wherein

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 two-level indication First The second level indication in the level indication and the two level indication; wherein the unit corresponding to the value of the value set is a physical subframe or a available subframe or a resource unit or a transmission time interval of a radio frame or a traffic channel; 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 method according to claim 5 or 7, wherein

When the value set is implicitly determined to be different according to the maximum number of repetitions Rmax configured in the high-level signaling or the number of repetitions indicated in the DCI, the different values uniformly use a multiple of Rmax/i, 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:

Use a multiple of Rmax/i;

Use at least two multiples of Rmax/i.
The method according to claim 5 or 7, wherein

According to 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 two sets of scheduling timing intervals are respectively used.
The method according to claim 9, wherein the value of the set of values comprises at least one of the following:

Use the same multiple of Rmax/i, using different common factors;

Use a different multiple of Rmax/i, using the same common factor representation;

One group does not use a multiple of Rmax/i, and the other group uses a multiple of Rmax/i.
The method of claim 5, wherein

The value of the element in the value set includes at least one of the following ways:

2 x , where x is at least one of the set {0, 1, 2, 3, ..., 20};

An integer multiple of the length of the wireless frame;

An integer multiple of the number of subframes occupied by one transport block;

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 of claim 11 wherein

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, a unique value of the fixed or base station configuration, determined according to different coverage levels, and at least according to the coverage level. A determination is determined according to the uplink single carrier transmission, and is determined according to the uplink subcarrier spacing.
The method of claim 1 wherein

When the start subframe of the NB-PDSCH or the NB-PUSCH is determined according to the resource allocation in the scheduling window, the scheduling timing interval is an arbitrary value smaller than the window length of the scheduling window, and the resources in the scheduling window are The 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-PUSCH. Start sub-frame.
The method of claim 13 wherein

When the start 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-PUSCH is also determined according to the offset value dynamically indicated by the DCI. Frame resources span the dispatch window or only within the dispatch window.
The method of claim 13 wherein

When the coverage enhancement scenario uses the resource allocation determined resource to repeatedly transmit R times, at least one of the following methods is included: 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; based on resource allocation in the scheduling window, only R times are repeatedly transmitted in the scheduling window, wherein at least one of R, Rin, and Rout is The RRC or SIB or DCI notifies that R, Rin and Rout are positive integers.
The method of claim 1 wherein

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, the transmission is only repeated between the scheduling windows. R times; 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 notified by RRC, SIB, or DCI. Rx, R, Rin, and Rout are all positive integers.
The method according to claim 15 or 16, wherein

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};

R=Rin×Rout;

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 method of claim 1 wherein

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:

Coding with the starting subframe within a predetermined indication range, using continuous resource allocation;

The elements in the finite value set are consecutive values or interval values.
The method of claim 1 wherein

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:

All OFDM symbols occupying the same continuous or non-contiguous 6 subcarriers in all orthogonal frequency division multiplexing;

Different non-contiguous 6 subcarriers are occupied in different OFDM symbols;

Different consecutive 6 subcarriers are occupied in different OFDM symbols.
The method of claim 1 wherein

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;

When the number of repetitions is greater than or equal to the threshold value Rx, 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 method of claim 1 wherein

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 the SIB or the RRC, or a fixed length, and the determining manner 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 method of claim 19, wherein

The length of the uplink scheduling window is the same as that of the downlink scheduling window, and is fixed or unified. Alternatively, the uplink scheduling window length and the downlink scheduling window are independently configured or take different fixed values.
The method of claim 1 wherein

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 method of claim 23, wherein

When the starting subframe is determined according to the period T and the offset value offset, 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 an integer of T. The position of the multiple, 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 method of claim 23, wherein

When the starting subframe is determined according to the maximum number of repetitions, at least one of the following manners is included:

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;

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 Take values for consecutive values or intervals.
The method according to claim 21 or 23, wherein

The set of values determined by the period being an integer multiple or a non-integer multiple of Rmax, or the set of values determined by the period being 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;

The value collection does not contain 1;

The value set contains a non-positive integer greater than 1 and less than 5;

Different sets of values are distinguished according to the threshold value Rmax=D, where D is a fixed constant or a constant configured by a higher layer signaling.
The method of claim 26, wherein

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 method according to claim 1, wherein 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 the following manner One:

Configure whether to perform discontinuous transmission, and the discontinuous transmission method implicitly determines;

Configure the number of intervals for discontinuous transmission, and the interval position is implicitly determined;

Configure the preset period and the interval position within the period;

Configure a preset period, and the period size is equal to the interval size;

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 according to claim 28, wherein, when the preset period is configured, and the interval position within the period, 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 or jointly encoded configurations, where i is an integer from 1 to 8.
The method of claim 29, wherein

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 device for scheduling a timing interval, comprising:

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.