CN110572247B

CN110572247B - Method and device in narrow-band wireless communication

Info

Publication number: CN110572247B
Application number: CN201910626311.1A
Authority: CN
Inventors: 蒋琦
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2015-10-27
Filing date: 2015-10-27
Publication date: 2022-03-01
Anticipated expiration: 2035-10-27
Also published as: CN106656440B; CN110572247A; CN106656440A

Abstract

The invention discloses a method and a device in narrow-band wireless communication. The base station sends a first signaling to the UE or receives a first signaling from the UE, wherein the first signaling comprises L information bit groups, and the K information bit groups are respectively used for indicating whether the transmission blocks in the K transmission block groups are correctly decoded or not. For a given transport block group of the K transport block groups, the index of the corresponding information bit group in the L information bit groups is related to at least one of a scheduling information position, an indication of the given transport block group, and a time-frequency position of the transport group. The invention relates the time domain information related to the transmission block group and the mapping of the HARQ-ACK information by designing a new mapping mode of the HARQ-ACK of data transmission so as to adapt to the characteristics of insensitive time delay of narrow-band communication and dispersed scheduled data resources, thereby increasing the transmission efficiency of the whole HARQ-ACK of the system and improving the utilization rate of frequency spectrum.

Description

Method and device in narrow-band wireless communication

The present application is a divisional application of the following original applications:

application date of the original application: 2015, 10 months and 27 days

- -application number of the original application: 201510708471.2

The invention of the original application is named: method and device in narrow-band wireless communication

Technical Field

The present invention relates to a transmission scheme in a wireless communication system, and in particular, to a method and an apparatus for resource mapping and design of a Hybrid Automatic Repeat reQuest (HARQ) feedback channel for narrowband communication based on Long Term Evolution (LTE-Long Term Evolution).

Background

The subject of NB-IOT (narrow band Internet of Things) at 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #69 times congress was set forth by 3GPP as a new Work Item of Release 13 and discussed at RAN1#89bis meetings. The technology provides improved indoor coverage, and realizes the work of supporting a large number of UE devices with the characteristics of low communication traffic, low delay sensitivity, ultralow device cost, low device power consumption and the like through an optimized network architecture. At present, the technology is discussed in three scenes, which are respectively as follows:

1. stand-alone operation (Stand-alone operation), i.e. occupying the bandwidth of the current GERAN (GSM EDGE Radio Access Network, GSM/EDGE wireless Communication Network) System to perform narrowband Communication, so as to replace one or more GSM (Global System for Mobile Communication) carriers at present.

2. Guard band operation (Guard band operation), namely, the unused resource blocks in the Guard band part of the carrier of the 3GPP LTE (Long-Term Evolution) system are utilized for narrowband communication.

3. In-band operation (In-band operation), i.e., utilizing resource blocks In the carrier of the normal LTE system for narrowband communication.

In LTE, a system bandwidth is composed of several PRB (physical Resource block) pairs, and one PRB pair includes two PRBs and is located in slot 0 and slot 1 of an LTE subframe. In the conventional LTE scheduling, the minimum scheduling Granularity (Granularity) is one PRB pair regardless of downlink data scheduling or uplink data scheduling. The base station transmits Downlink scheduling (Downlink Grant) information and Uplink scheduling (Uplink Grant) on a PDCCH (Physical Downlink Control Channel) or an EPDCCH (Enhanced Physical Downlink Control Channel), and schedules one or more continuous/discontinuous PRB pairs to a user for corresponding Downlink and Uplink data transmission.

Disclosure of Invention

The inventor finds that, by introducing the NB-IOT technology, particularly in an in-band operation scenario, one problem to be studied is resource mapping and transmission mode of the HARQ-ACK feedback channel. Compared to the conventional LTE system and the EMTC (Enhanced Machine-Type Communication) system introduced by Release 13 and discussed in 3GPP, the NB-IOT is the most different in that, within 1 LTE subframe, the NB-IOT system operates only on one narrowband with one PRB bandwidth (180kHz), i.e. within 1ms, only one PRB pair is used for NB-IOT transmission. Considering the characteristics of NB-IOT low traffic, whether uplink or downlink, a scheduling mode based on one PRB pair being the minimum scheduling granularity will generate a large waste on resource utilization, and if the existing scheduling granularity is reduced, the HARQ-ACK channel mapping mode needs to be redesigned to match the new scheduling granularity. Meanwhile, in consideration of the characteristics of Control signaling overhead and low delay, one scheduling signaling may schedule data at multiple time positions, which requires consideration of the representation of the multiple time position information in the HARQ-ACK Channel in a new HARQ-ACK Channel mapping manner, compared to a conventional PHICH (Physical Hybrid ARQ Indicator Channel) and a PUCCH (Physical Uplink Control Channel) for downlink (dl) HARQ-ACK transmission.

The present invention provides a solution to the above problems. It should be noted that, without conflict, the embodiments and features in the embodiments in the UE (User Equipment) of the present application may be applied to the base station, and vice versa. Further, the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.

Aiming at the resource mapping and design method of uplink and downlink HARQ-ACK channels of narrow-band communication, an intuitive method is to use the existing PHICH and PUCCH design scheme for sending HARQ-ACK. However, the inventor finds, through research, that one problem of the above-described intuitive method is that information bits used for indicating HARQ-ACK in the PHICH and PUCCH channel may indicate that the minimum data transmission resource set size is one PRB pair, and when the scheduling granularity of NB-IOT is smaller than one PRB pair, the original PHICH and PUCCH cannot be directly used.

The solution in the present invention fully takes into account the above mentioned problems.

The invention discloses a method in a base station supporting narrow-band wireless communication, which comprises the following steps:

step A, first operation K transmission block groups.

And B, operating a first signaling in a second mode, wherein the first signaling comprises L information bit groups, and K information bit groups in the L information bit groups are respectively used for indicating whether the transmission blocks in the K transmission block groups are correctly decoded.

Wherein, K is a positive integer, L is a positive integer greater than or equal to K, one transport block group consists of a positive integer number of transport blocks, and one information bit group consists of a positive integer number of information bits. For a given transport block set of the K transport block sets, a first parameter is an index of the corresponding information bit set in the L information bit sets, the first parameter being related to at least one of:

the position index of the resource occupied by the scheduling signaling of the given transmission block group corresponds to { the second parameter, the third parameter }. The second parameter corresponds to a time domain, and the third parameter corresponds to a scheduling unit index of the scheduling signaling.

The position index of occupied time frequency resource of the given transmission block group corresponds to the fourth parameter and the fifth parameter. The fourth parameter corresponds to a time domain, and the fifth parameter corresponds to a frequency domain.

A sixth parameter indicated by the scheduling signaling corresponding to the given transport block group.

As an embodiment, at least two transmission block groups of the K transmission block groups are partially or completely overlapped in the time-frequency domain.

As an embodiment, any two transmission block groups of the K transmission block groups do not overlap in the time-frequency domain.

As an embodiment, the number of transport blocks included in at least two transport block groups of the K transport block groups is different. As an embodiment, one transport block group is composed of one transport block. As an embodiment, the number of bits in an information bit group and the number of transport blocks in the corresponding transport block group are equal.

As an embodiment, a DMRS (Demodulation Reference Signal) corresponding to a given transmission block group and the given transmission block group are respectively transmitted by the same antenna port.

As an embodiment, the K transmission block groups belong to J users, and J is a positive integer greater than 0 and less than or equal to K. In the J users, the number of the transmission block groups corresponding to each user is minimum 1 and maximum K, and the J users comprise K transmission block groups in total. As a sub-embodiment of this embodiment, J ═ K, and each user contains only one transport block set. As another sub-embodiment of this embodiment, J ═ 1, and the user contains K transport block groups.

As an embodiment, the second parameter is a sequence number of a starting downlink time window of all downlink time windows occupied by the scheduling signaling in all downlink time windows occupied by one scheduling time window set. Wherein the set of scheduling time windows is M consecutive or non-consecutive downlink time windows. Specifically, the downlink time window occupies 1ms in the time domain. In an FDD (Frequency Division duplex) mode, the downlink time window is an LTE subframe; in a TDD (Time Division duplex) mode, the downlink Time window is a TDD subframe other than the TDD uplink subframe. The value of M is either predefined or configured by higher layer signaling. When the scheduling time window set is M discontinuous downlink time windows, the positions of the M discontinuous downlink time windows are configured by predefined or high-level signaling. And M is a positive integer.

As an embodiment, the third parameter is sequence numbers of all scheduling units in a search space corresponding to a starting scheduling unit occupied by a scheduling signaling of a given transport block group in the search space corresponding to the scheduling signaling. The search space of the scheduling signaling corresponds to the scheduling time window set in the time domain, and the PRB pairs forming the search space of the downlink scheduling signaling are all the PRB pairs or one PRB pair set in the scheduling time window set. When the search space of the scheduling signaling is a PRB pair set, the PRB pair set includes a positive integer number of PRBs, and the number and positions of the included PRB pairs are configured by a high-level signaling. As a sub-embodiment of this embodiment, the scheduling Element is a CCE (Control Channel Element). As a sub-embodiment of this embodiment, the scheduling Element is an ECCE (Enhanced Control Channel Element). As an embodiment of this embodiment, the scheduling unit is E consecutive EREGs (Enhanced Resource Element Group). Where E is a positive integer and is either predefined or configured by higher layer signaling.

As an embodiment, the fourth parameter is a sequence number of a starting downlink time window in which downlink data transmission occurs in a set of 1 UL HARQ-ACK time windows. Wherein the UL HARQ-ACK time window set is composed of D continuous or discontinuous downlink time windows. Where D is a positive integer and is either predefined or configured by higher layer signaling.

As an embodiment, the fourth parameter is a sequence number of the starting uplink time window set in which the uplink data transmission occurs in all uplink time window sets occupied by 1 DL HARQ-ACK time window set. The uplink time window set consists of N uplink time windows, and the uplink time windows occupy N continuous LTE subframes in an FDD mode; in the TDD mode, TDD subframes other than N consecutive or non-consecutive TDD downlink subframes are occupied. The one UL HARQ-ACK time window set comprises P continuous uplink time window sets, and the value of P is configured by predefined or high-layer signaling and is a positive integer.

As an embodiment, the fifth parameter is a sequence number of an initial downlink or uplink resource set where downlink or uplink data transmission occurs in all uplink resource sets included in the entire downlink or uplink frequency band. Wherein the frequency band is 180 kHz. The downlink or uplink resource set occupies continuous Q subcarriers in a frequency domain, and occupies a downlink time window or an uplink time window set in a time domain. The Q is predefined or configured by higher layer signaling. And Q is a positive integer.

As an embodiment, the scheduling signaling is physical layer signaling.

As an embodiment, the scheduling signaling is dynamically scheduled physical layer signaling.

As one embodiment, the scheduling signaling is physical layer signaling of SPS.

As an embodiment, when a given transport block corresponds to downlink transmission, the scheduling signaling is one of DCI formats {1,1A,1B,1D,2,2A,2B,2C }, the sixth parameter is HARQ-ACK Resource Offset (Resource Offset) information bits in the corresponding DCI Format, and the HARQ-ACK Resource Offset information bits occupy 2 bits.

As an example, when a given transport block corresponds to uplink transmission, the scheduling signaling is one of DCI formats {0, 4 }. The sixth parameter is an OCC index and a cyclic offset indication corresponding to a DMRS in the DCI Format, and the OCC index and the cyclic offset indication of the DMRS occupy 3 bits.

Specifically, according to an aspect of the present invention, the first parameter is a remainder of Y modulo L, and Y is linearly related to at least one of { the second parameter, the third parameter, the fourth parameter, the fifth parameter, and the sixth parameter }.

Specifically, according to an aspect of the present invention, the first signaling occupies 12 × R REs, the 12 × R REs are equally divided into R HARQ resource sets, and each HARQ resource set occupies 12 REs. The HARQ-ACK information of each transmission block group in the first signaling occupies all REs of a certain HARQ resource set of the R HARQ resource sets. The R is a positive integer and is obtained by a predefined or higher layer signaling configuration. The positions of the 12 × R REs in the time-frequency resource of the system are predefined.

In particular, according to one aspect of the invention, the first operation is reception and the second operation is transmission, said first parameter being related to at least a fifth parameter of { a fourth parameter, a fifth parameter }.

In particular, according to one aspect of the invention, the first operation is transmission and the second operation is reception, said first parameter being related to at least a fifth parameter of { a fourth parameter, a fifth parameter }.

In particular, according to one aspect of the invention, it is characterized in that the first operation is reception or the first operation is transmission, and the first parameters are each at least related to a fifth parameter of { fourth parameter, fifth parameter }.

The conventional LTE HARQ-ACK channel, whether PHICH or PUCCH, does not take into account the time domain information transmitted by the resource corresponding to the feedback information, because the LTE system transmits scheduled data in a single LTE subframe except SPS (Semi-persistent Scheduling). And in the NB-IOT system, since the system bandwidth is only 180kHz and it is insensitive to delay, one data transmission may be spread over multiple LTE subframes. Aiming at the situation, the invention introduces the time domain information generated by the scheduled data into the mapping of the HARQ-ACK channel so as to reduce the collision probability of the information bit of the HARQ-ACK channel and improve the HARQ feedback performance.

Another peculiarity of the invention is that considering the characteristic of low data volume of the NB-IOT system, HARQ-ACK design based on smaller scheduling resource granularity is introduced to adapt to HARQ-ACK requirement corresponding to transmission of NB-IOT. Meanwhile, when a Release 8 system is designed, because downlink transmission is asynchronous self-adaptive, a mode of associating HARQ-ACK mapping with CCE is adopted; and the uplink transmission simultaneously supports two modes of non-self-adaption and self-adaption, namely retransmission can be sent without scheduling, so a mode of associating HARQ-ACK mapping with the position of a scheduling starting PRB pair is adopted. And the NB-IOT system is a low-delay system, and scheduling modes similar to SPS may appear in large quantity, so that HARQ-ACK mapping corresponding to uplink and downlink transmission can adopt a mode associated with the position of a scheduling initial resource set, thereby simplifying a design mode.

The invention discloses a method in UE supporting narrow-band wireless communication, which comprises the following steps:

step A, first operation K transmission block groups.

Specifically, according to an aspect of the present invention, the first signaling occupies 12 × R REs, the 12 × R REs are equally divided into R HARQ resource sets, and each HARQ resource set occupies 12 REs. The HARQ-ACK information of each transmission block group in the first signaling occupies all REs of a certain HARQ resource set of the R HARQ resource sets. The R is a positive integer and is obtained by a predefined or higher layer signaling configuration.

The invention discloses a base station device supporting narrow-band wireless communication, which is characterized by comprising:

first operating K transport block groups

A second module, configured to operate a first signaling, the first signaling comprising L information bit groups, K of the L information bit groups being used to indicate whether transport blocks of the K transport block groups are correctly decoded, respectively.

The invention discloses a UE device supporting narrow-band wireless communication, which is characterized by comprising:

first operating K transport block groups

Compared with the prior art, the invention has the following technical advantages:

introducing the time domain information of the scheduled data into the mapping of the HARQ-ACK channel to reduce the collision probability of the information bits of the HARQ-ACK channel and improve the HARQ feedback performance.

New smaller resource granularity scheduling corresponding HARQ-ACK design is introduced to accommodate the HARQ-ACK requirements for NB-IOT transmissions.

HARQ-ACK mapping corresponding to uplink and downlink transmission can be associated with the position of the scheduling start resource set, thereby simplifying the design approach.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 shows a flow diagram of an embodiment of uplink transmission according to the present invention;

FIG. 2 shows a flow diagram of one embodiment of a downstream transmission according to the present invention;

FIG. 3 is a diagram illustrating an embodiment of a second parameter definition in accordance with the present invention;

FIG. 4 is a schematic diagram illustrating one embodiment of a third parameter definition in accordance with the present invention;

FIGS. 5(a) and 5(b) are schematic diagrams illustrating embodiments defined by a fourth parameter and a fifth parameter according to the present invention; fig. 5(a) is a schematic diagram illustrating an embodiment defined by a fourth parameter and a fifth parameter when mapping the corresponding UL HARQ-ACK channel in downlink transmission; fig. 5(b) is a schematic diagram illustrating an embodiment of defining the fourth parameter and the fifth parameter when mapping the corresponding DL HARQ-ACK channel in uplink transmission.

Fig. 6 shows a block diagram of a processing means in a base station according to an embodiment of the invention;

fig. 7 shows a block diagram of a processing device in a UE according to an embodiment of the invention;

Detailed Description

The technical solutions of the present invention will be further described in detail with reference to the accompanying drawings, and it should be noted that the features of the embodiments and examples of the present application may be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a flow chart of an embodiment of uplink transmission according to the present invention, as shown in fig. 1. In fig. 1, base station N1 is a serving cell maintaining base station for UE U2.

For the UE U2, K transport block groups are transmitted in step S21.

As an embodiment, the K transmission block groups belong to J users, and J is greater than or equal to 1 and less than or equal to K. In the J users, the number of the transmission block groups contained in each user is minimum 1 and maximum K, and the J users contain K transmission block groups in total. As a sub-embodiment of this embodiment, J ═ K, and each user contains only one transport block set. As another sub-embodiment of this embodiment, J ═ 1, and the user contains K transport block groups.

As an embodiment, the K transport block groups are transmitted by a PUSCH (Physical Uplink Shared Channel).

For the base station N1, K transport block groups are received in step S11.

As an embodiment, after detecting the K transmission block groups, the base station generates K information bit groups, where each information bit group includes W information bits. And when the W information bits are all '1', indicating that the transmission block group corresponding to the information bit group receives correctly. And when the W information bits are all '0', indicating that the transmission block group corresponding to the information bit group is not correctly received. As a sub-example of this embodiment, W ═ 1. As another sub-embodiment of this embodiment, W is a positive integer greater than 1, and W is predefined.

For the base station N1, in step S12, a first signaling is sent, where the first signaling includes L information bit groups, and K information bit groups of the L information bit groups are respectively used for indicating whether transport blocks of the K transport block groups are correctly decoded.

As an embodiment, the first parameter is defined as a variable y; the variable { m, i, n, q, j } is defined as { second parameter, third parameter, fourth parameter, fifth parameter, sixth parameter }. The first signaling contains L information bit groups in total, and corresponds to L × W information bits, so that y indicates that the DL HARQ-ACK information bit group corresponding to the given transport block group is located in the (y +1) th information bit group in the first signaling, and correspondingly occupies bits y × W to (y +1) × W-1. Y is the remainder of Y modulo L, and Y is linear with at least one of { m, i, n, q, j }.

As a sub-embodiment of this embodiment, Y is equal to m;

as a sub-embodiment of this embodiment, Y is equal to i;

as a sub-embodiment of this embodiment, Y is equal to n;

as a sub-embodiment of this embodiment, Y is equal to q;

as a sub-embodiment of this embodiment, Y is linear with m and i, and Y ═ G_mm+G_i·i，G_mAnd G_iA positive integer predefined or configured for a higher layer.

As a sub-embodiment of this embodiment, Y is linear with n and q, and Y ═ G_nn+G_q·q，G_nAnd G_qA positive integer predefined or configured for a higher layer.

As a sub-embodiment of this embodiment, Y is linear with m, i and j, and Y ═ G_mm+G_i·i+G_j·j，G_m，G_iAnd G_jA positive integer predefined or configured for a higher layer.

As a sub-embodiment of this embodiment, Y is linear with n, q and j, and Y ═ G_nn+G_q·q+G_j·j，G_n，G_qAnd G_jA positive integer predefined or configured for a higher layer.

As an example, the first signalingThe total occupation of 12R REs, the 12R REs are equally divided into R HARQ resource sets, and each HARQ resource set occupies 12 REs. The W information bits corresponding to each transport block group are mapped to all 12 REs occupied by a corresponding HARQ resource set in a code division manner. When each HARQ resource set can map H transmission block groups at most, the HARQ resource set y for transmitting HARQ-ACK information of a given transmission block group₁Is the integer part of the quotient of Y divided by H, and is linear with respect to at least one of { m, i, n, q, j }.

As a sub-embodiment of this embodiment, Y is equal to m;

as a sub-embodiment of this embodiment, Y is equal to i;

as a sub-embodiment of this embodiment, Y is equal to n;

as a sub-embodiment of this embodiment, Y is equal to q;

Here, H is a positive integer predefined or determined by a higher layer signaling configuration.

For the UE U2, in step S22, a first signaling is received, where the first signaling includes L information bit groups, and K information bit groups of the L information bit groups are respectively used for indicating whether transport blocks of the K transport block groups are correctly decoded.

Example 2

Embodiment 2 illustrates a flow chart of an embodiment of downlink transmission according to the present invention, as shown in fig. 2. In fig. 2, base station N3 is the serving cell maintaining base station for UE U4.

For the base station N3, K transport block groups are transmitted in step S31.

As an embodiment, the K transport block groups are transmitted by a PDSCH (Physical Downlink Shared Channel).

For the UE U4, K transmission block groups are received in step S41.

For the UE U4, a first signaling is sent in step S42, the first signaling includes L information bit groups, K information bit groups of the L information bit groups are respectively used for indicating whether the transport blocks in the K transport block groups are correctly decoded.

As an example, assume that the first parameter is variable y; { second parameter, third parameter, fourth parameter, fifth parameter, sixth parameter } corresponds to the variable { m, i, n, q, j }. When the first signaling contains L information bit groups in total, corresponding to L × W information bits, y indicates that the UL HARQ-ACK information bit group corresponding to the given transport block group is located in the (y +1) th information bit group in the first signaling, and correspondingly occupies bits y × W to (y +1) × W-1. Y is the remainder of Y modulo L, and Y is linear with at least one of { m, i, n, q, j }.

As a sub-embodiment of this embodiment, Y is equal to m;

as a sub-embodiment of this embodiment, Y is equal to i;

as a sub-embodiment of this embodiment, Y is equal to n;

as a sub-embodiment of this embodiment, Y is equal to q;

For the base station N3, in step S32, a first signaling is received, where the first signaling includes L information bit groups, and K information bit groups of the L information bit groups are respectively used for indicating whether transport blocks of the K transport block groups are correctly decoded.

Example 3

Embodiment 3 illustrates a schematic diagram of an embodiment defined by a second parameter according to the present invention. As shown in fig. 3. As shown in fig. 3, it is assumed that M consecutive or non-consecutive downlink time windows constitute a scheduling time window set, and M is 6. The second parameter represents a sequence number of a scheduling time window set of a downlink time window initiated by the scheduling signaling corresponding to the given transmission block group, and the second parameter is an integer greater than or equal to 0 and less than M. For the scene with 6 continuous downlink time windows on the left, the scheduling signaling starts from downlink time window 2 (index is indexed from 0), and then the second parameter is 2; for the right scenario with 6 non-consecutive downlink time windows, the scheduling signaling starts in downlink time window 1 (indexed from 0), and the second parameter is 1. As an embodiment, Y is linear with at least m of { m, i, n, q, j }, and the coefficient G_mAnd

and has a linear relationship. Wherein

Which represents a rounding-up operation on the upper part,

is the smallest integer not less than X. As a sub-embodiment of this embodiment,

example 4

Embodiment 4 illustrates a schematic diagram of an embodiment defined by a third parameter according to the present invention. As shown in fig. 4, it is assumed that M consecutive or non-consecutive downlink time windows constitute a scheduling time window set, and M is 6. Further, when a downlink time window includes F scheduling units, oneThe scheduling time window sets include M × F scheduling units, and the third parameter is an integer greater than or equal to 0 and smaller than M × F, where F shown in fig. 4 is equal to 4. As shown, a scheduling time window contains 24 scheduling units. When the starting scheduling unit occupied by the scheduling signaling corresponding to a given transport block group is scheduling unit 4 (indexed from 0), the third parameter is equal to 4. As another example, M-5 and F-4. As another example, M-4 and F-4. As another example, M is 3 and F is 4. As another embodiment, M is one of {6,5,4,3}, and F is configured by higher layer signaling. As another embodiment, both M and F are configured by higher layer signaling. As an embodiment, Y is linear with at least i of { m, i, n, q, j }, and the coefficient G_iAnd

a linear relationship; as a sub-embodiment of this embodiment,

example 5

Example 5 shows a schematic diagram of an example of the definition of the fourth and fifth parameters of the present invention. Fig. 5(a) shows a schematic diagram of an embodiment defined by a fourth parameter and a fifth parameter when mapping a corresponding UL HARQ-ACK channel in downlink transmission; fig. 5(b) is a diagram illustrating an embodiment of the fourth parameter and the fifth parameter definition during mapping of the corresponding DL HARQ-ACK channel in uplink transmission.

As shown in fig. 5(a), one UL HARQ-ACK time window set consists of D consecutive or non-consecutive downlink time windows. Where D is a positive integer and is either predefined or configured by higher layer signaling. The downlink time window is 1 ms. As shown in the figure, the scheduling information of a given transport block group schedules 4 resources to constitute one transport block group. The fourth parameter represents a sequence number of a starting downlink time window occupied by the given transport block group in one UL HARQ-ACK time window set, and the fourth parameter is an integer which is greater than or equal to 0 and smaller than D. Here, the starting downlink time window occupied by the given transport block group is located in downlink time window 0 of the D downlink time windows, and the corresponding fourth parameter is 0. Further, when a downlink time window includes S downlink resource sets, each downlink resource set occupies Q subcarriers, where Q is 12/S. The fifth parameter represents the sequence number of the starting downlink resource set occupied by the given transmission block group in the S downlink resource sets included in one downlink time window, and the fifth parameter is an integer greater than or equal to 0 and smaller than S. Here S is shown as 6 and the scheduled data starts in downlink resource set 2, then the fifth parameter is equal to 2. As a sub-example of this embodiment, S is 1 and the fifth parameter is 0.

In this UL HARQ-ACK scenario, as an example, Y is linear with at least n of { m, i, n, q, j }, the coefficient G_nAnd

a linear relationship; as a sub-embodiment of this embodiment,

as an example, Y is linear with at least q of m, i, n, q, j, and the coefficient G_qAnd

a linear relationship; as a sub-embodiment of this embodiment,

as shown in fig. 5(b), one DL HARQ-ACK time window set consists of P consecutive or non-consecutive uplink time window sets, and one uplink time window set consists of N uplink time windows. The fourth parameter represents a sequence number of an initial uplink time window set occupied by the given transmission block group in a DL HARQ-ACK time window set, and the fourth parameter is an integer which is greater than or equal to 0 and smaller than P. Here, the initial uplink time window set occupied by the given transport block group is located in an uplink time window set 1 of the P uplink time window sets, and the corresponding fourth parameter is 1. Further, when one uplink time window set includes T uplink resource sets, the fifth parameter indicates a sequence number of the starting uplink resource set occupied by the given transmission block group in the T uplink resource sets included in the one uplink time window set, and the fifth parameter is an integer greater than or equal to 0 and smaller than T. Here, T is illustrated as 12, and the scheduled data starts from uplink resource set 2, the fifth parameter is equal to 2. As another example, N ═ M, and T ═ M. As another example, N ═ M, and T ═ M × 12. As another example, N ═ M ═ 6, and T ═ 6. As another example, N ═ M ═ 6, and T ═ 72. As another embodiment, N ═ M, and both M and T are configured or predefined by higher layer signaling.

In this DL HARQ-ACK scenario, as one embodiment, Y is linear with at least n of { m, i, n, q, j }, the coefficient G_nAnd

a linear relationship; as a sub-embodiment of this embodiment,

a linear relationship; as a sub-embodiment of this embodiment,

example 6

Embodiment 6 shows a block diagram of a processing apparatus in a base station according to an embodiment of the present invention. As shown in fig. 6. In fig. 6, the base station processing apparatus 200 is mainly composed of a first module 201 and a second module 202.

The first module operates K transmission block groups.

And a second module, configured to operate a first signaling, where the first signaling includes L information bit groups, and K information bit groups of the L information bit groups are respectively used to indicate whether transport blocks of the K transport block groups are decoded correctly.

Specifically, the first operation is reception, and the second operation is transmission; the first operation is transmission and the second operation is reception.

As an embodiment, the first parameter is defined as a variable y; the variable { m, i, n, q, j } is defined as { second parameter, third parameter, fourth parameter, fifth parameter, sixth parameter }. The first signaling contains L information bit groups in total, corresponding to L information bits, and y represents that the DL HARQ-ACK information bit group corresponding to the given transmission block group occupies the (y +1) th bit in the first signaling. Y is the remainder of Y modulo L, Y is linear with n and q, and Y is n + q.

As an embodiment, the first parameter is defined as a variable y; the variable { m, i, n, q, j } is defined as { second parameter, third parameter, fourth parameter, fifth parameter, sixth parameter }. The first signaling contains L information bit groups in total, corresponding to L information bits, and y represents that the UL HARQ-ACK information bit group corresponding to the given transmission block group occupies the (y +1) th bit in the first signaling. Y is the remainder of Y modulo L, Y is linear with n and q, and Y equals n +2 · q.

Example 7

Embodiment 7 shows a block diagram of a processing apparatus in a UE according to an embodiment of the present invention. As shown in fig. 7. In fig. 7, the UE processing apparatus 300 mainly comprises a first module 301 and a second module 302.

The first module operates K transmission block groups.

Specifically, the first operation is transmission, and the second operation is reception; the first operation is reception and the second operation is transmission.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The UE in the present invention includes, but is not limited to, an RFID, an internet of things terminal device, an MTC (Machine Type Communication) terminal, a vehicle-mounted Communication device, a wireless sensor, a network card, a mobile phone, a tablet computer, a notebook, and other wireless Communication devices. The base station in the present invention includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, and other wireless communication devices.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method in a base station supporting narrowband wireless communications, comprising:

step a sends K transport block groups;

-step B receiving a first signaling, the first signaling comprising K information bit groups, the K information bit groups being respectively used for indicating whether transport blocks in the K transport block groups are correctly decoded;

the K is a positive integer larger than 1, one transmission block group consists of a positive integer number of transmission blocks, and one information bit group consists of a positive integer number of information bits; for a given transport block group of the K transport block groups, the first parameter is an index of the corresponding information bit group in the K information bit groups; the first and fourth parameters are correlated; the K transmission block groups are scheduled by a scheduling signaling; the fourth parameter is equal to a sequence number of a starting downlink time window in which the given transport block group occurs in 1 UL HARQ-ACK time window set, where the UL HARQ-ACK time window set is composed of D consecutive or non-consecutive downlink time windows, and D is a positive integer greater than 1.

2. The method of claim 1, wherein the one scheduling signaling is physical layer signaling.

3. The method of claim 2, wherein none of the K transport block groups overlap in time-frequency domain, or wherein the K transport block groups are transmitted on PDSCH.

4. The method according to any of claims 1 to 3, wherein at least two of the K groups of information bits are mapped on different REs.

5. A method according to any one of claims 1 to 3, wherein the first parameter is equal to the remainder of the fourth parameter modulo K, the fourth parameter being an integer greater than or equal to 0 and less than D.

6. The method of claim 4, wherein the first parameter is equal to a remainder of the fourth parameter modulo K, and wherein the fourth parameter is an integer greater than or equal to 0 and less than D.

7. A method in a UE supporting narrowband wireless communication, comprising:

-step a receiving K transport block sets;

-step B sending a first signaling, the first signaling comprising K information bit groups, the K information bit groups being respectively used for indicating whether transport blocks in the K transport block groups are correctly decoded;

8. The method of claim 7, wherein the one scheduling signaling is physical layer signaling.

9. The method of claim 8, wherein none of the K transport block groups overlap in time-frequency domain, or wherein the K transport block groups are transmitted on PDSCH.

10. The method according to any of claims 7 to 9, wherein at least two of the K groups of information bits are mapped on different REs.

11. The method according to any one of claims 7 to 9, wherein the first parameter is equal to a remainder of the fourth parameter modulo K, the fourth parameter being an integer greater than or equal to 0 and less than D.

12. The method of claim 10, wherein the first parameter is equal to a remainder of the fourth parameter modulo K, and wherein the fourth parameter is an integer greater than or equal to 0 and less than D.

13. A base station apparatus supporting narrowband wireless communication, comprising:

-the first module sends K transport block groups;

-a second module receiving a first signaling, the first signaling comprising K information bit groups, the K information bit groups of the K information bit groups being respectively used for indicating whether transport blocks of the K transport block groups are correctly decoded;

14. The base station apparatus of claim 13, wherein said one scheduling signaling is physical layer signaling.

15. The base station device of claim 14, wherein none of the K transport block groups overlap in time-frequency domain, or wherein the K transport block groups are transmitted on PDSCH.

16. The base station device according to any of claims 13 to 15, wherein at least two of said K groups of information bits are mapped on different REs.

17. The base station apparatus according to any of claims 13 to 15, wherein the first parameter is equal to a remainder of the fourth parameter modulo K, and the fourth parameter is an integer greater than or equal to 0 and less than D.

18. The base station apparatus of claim 16, wherein the first parameter is equal to a remainder of the fourth parameter modulo K, and the fourth parameter is an integer greater than or equal to 0 and less than D.

19. A user equipment in support of narrowband wireless communication, comprising:

-a first module receiving K groups of transmission blocks;

-the second module sends a first signaling, the first signaling comprising K information bit groups for indicating whether transport blocks of the K transport block groups are correctly decoded, respectively;

20. The user equipment of claim 19, wherein the one scheduling signaling is physical layer signaling.

21. The UE of claim 20, wherein none of the K transport block groups overlap in time-frequency domain, or wherein the K transport block groups are transmitted on PDSCH.

22. The user equipment according to any of claims 19 to 21, wherein at least two of the K groups of information bits are mapped on different REs.

23. The UE of any one of claims 19 to 21, wherein the first parameter is equal to a remainder of the fourth parameter modulo K, and wherein the fourth parameter is an integer greater than or equal to 0 and less than D.

24. The UE of claim 22, wherein the first parameter is equal to a remainder of the fourth parameter modulo K, and wherein the fourth parameter is an integer greater than or equal to 0 and less than D.