CN106455093A

CN106455093A - Data transmission method and apparatus

Info

Publication number: CN106455093A
Application number: CN201510497838.0A
Authority: CN
Inventors: 高雪娟; 徐伟杰; 邢艳萍
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2015-08-13
Filing date: 2015-08-13
Publication date: 2017-02-22
Anticipated expiration: 2035-08-13
Also published as: WO2017025066A1; CN106455093B

Abstract

The invention provides a data transmission method and apparatus. According to the invention, a base station determines N physical shared channels for downlink control channel dispatching wherein the N physical shared channels are provided with different coverage enhancement levels and/or repeated transmission times and N is an integer greater than one. The base sends the downlink control channel, and the downlink control channel carries the dispatching information for the N physical shared channels. As one downlink control channel carries dispatching information of the physical shared channels with different coverage enhancement levels and/or repeated transmission times, the physical shared channels with different repeated times are sent independently so as to avoid resource conflict incurred in data transmission from downlink control channel dispatching.

Description

Data transmission method and device

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method and apparatus.

Background

With the rise of the internet of things, the support of Machine Type Communication (MTC) in a Long Term Evolution (LTE) system is gaining more and more attention. An MTC device (MTC terminal) may have some of various M2M (Machine to Machine) communication characteristics, such as low mobility, small amount of data transmission, insensitivity to communication delay, and requirement for very low power consumption. In order to reduce the cost of the MTC terminal, a user equipment type is newly defined, and both uplink and downlink of the user equipment type only support 1.4MHz radio frequency bandwidth.

In the existing network, user equipment working in some scenes, such as user equipment working in basements, shopping malls or building corners, cannot communicate with the network because wireless signals are severely shielded and the signals are greatly attenuated, and the network construction cost is greatly increased by performing deep coverage on the network in the scenes. One more feasible way to achieve coverage enhancement is to use repeated transmissions or similar techniques on existing channels to achieve a certain degree of coverage gain.

Data transmission of MTC is scheduled through a downlink control channel. The uplink data bearer is transmitted in an uplink shared channel, and the downlink data bearer is transmitted in a downlink shared channel. The downlink data transmission includes paging, Random Access Response (RAR) and msg4 information, where the msg4 information is downlink contention resolution information sent by the base station to the user equipment during the Random Access process. According to different scheduled service contents, the downlink control channel may be transmitted in a common search space, or may be transmitted in a search space dedicated to a UE (User Equipment, i.e., terminal).

The paging message is transmitted in a subframe in which the paging message can be transmitted, which is determined according to a predetermined rule. In the same Paging subframe, Paging messages of a plurality of user equipments can be transmitted, the Paging messages are carried in a downlink shared channel, and are scheduled by a downlink control channel scrambled by a P-RNTI (Paging-Radio network temporary Identity) transmitted in a common search space.

The transmission of the RAR message, i.e., msg2 transmission in the Random Access process, is carried in a downlink shared channel, and is scheduled by a downlink control channel scrambled by RA-RNTI (Random Access-Radio network temporary identity) transmitted in a common search space. The RAR messages of the user equipments corresponding to the same RA-RNTI may be simultaneously carried in the same downlink shared channel for transmission.

Considering that in the coverage enhancement mode, data transmission needs to take 6 PRBs (Physical Resource blocks) occupying one narrow band (1.4MHz) for transmission, so as to shorten the number of repeated transmissions. That is, only one downlink shared channel can be transmitted in the same subframe by one narrowband. If multiple downlink control channels are simultaneously transmitted in the downlink control channel receiving window, there may be resource conflicts in the data transmissions scheduled by these downlink control channels. For the paging message, a plurality of ues that need to be paged in the current subframe can only be scheduled by the same P-RNTI, but the coverage enhancement levels (levels) of these ues may be different, and therefore the repetition times are different, and the Downlink Shared channels with different repetition times need to be sent independently, for example, PDSCH (Physical Downlink Shared Channel) with different coverage enhancement levels is sent in sequence in TDM (Time-Division Multiplexing) transmission mode, and the PDSCH (Physical Downlink Shared Channel) is sent in different narrow bands in FDM (Frequency Division Multiplexing) transmission mode. Similar problems as described above also exist for RAR messages if the RA-RNTIs used by user equipments of different coverage enhancement classes are the same.

Disclosure of Invention

The embodiment of the invention provides a data transmission method and a data transmission device, which are used for avoiding resource conflict of data transmission scheduled by a downlink control channel.

The data transmission method provided by the embodiment of the invention comprises the following steps:

a base station determines N physical shared channels scheduled by a downlink control channel, wherein the N physical shared channels have different coverage enhancement levels and/or repeated transmission times, and N is an integer greater than 1;

and the base station sends the downlink control channel, and the scheduling information of the N physical shared channels is borne in the downlink control channel.

Another embodiment of the present invention provides a data transmission method, including:

the method comprises the steps that user equipment receives a downlink control channel, wherein scheduling information of N physical shared channels is borne in the downlink control channel, the N physical shared channels have different coverage enhancement grades and/or repeated transmission times, and N is an integer larger than 1;

and the user equipment performs data transmission on the N physical shared channels according to the scheduling information of the N physical shared channels borne in the downlink control channel.

The base station provided by the embodiment of the invention comprises:

a determining module, configured to determine N physical shared channels scheduled by a downlink control channel, where the N physical shared channels have different coverage enhancement levels and/or repeated transmission times, and N is an integer greater than 1;

and a sending module, configured to send the downlink control channel, where the downlink control channel carries the scheduling information of the N physical shared channels.

The user equipment provided by the embodiment of the invention comprises:

a receiving module, configured to receive a downlink control channel, where the downlink control channel carries scheduling information of the N physical shared channels, where the N physical shared channels have different coverage enhancement levels and/or repeated transmission times, and N is an integer greater than 1;

and the data transmission module is used for carrying out data transmission on the N physical shared channels according to the scheduling information of the N physical shared channels carried in the downlink control channel.

In the above embodiment of the present invention, since one downlink control channel carries scheduling information of physical shared channels with different coverage enhancement levels and/or repetition transmission times, independent transmission of the physical shared channels with different repetition times is realized, and resource collision of data transmission scheduled by the downlink control channel is avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic diagram of a data transmission flow implemented at a base station according to an embodiment of the present invention;

fig. 2, fig. 3, fig. 4 and fig. 5 are schematic DCI diagrams in an embodiment of the present invention, respectively;

fig. 6 is a schematic diagram of a data transmission flow implemented at a user equipment side according to an embodiment of the present invention;

fig. 7 is a diagram illustrating RAR message transmission according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a paging message transmission in the embodiment of the present invention;

fig. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a base station according to another embodiment of the present invention;

fig. 11 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a user equipment according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the embodiment of the present invention, a User Equipment (UE) may be referred to as a Terminal (Terminal), a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), an MTC Terminal, and the like, and the UE may communicate with one or more core networks through a Radio Access Network (RAN).

In this embodiment of the present invention, the base station may be an evolved node b (eNB or e-NodeB) in an LTE system, a macro base station, a micro base station (also referred to as a "small base station"), a pico base station, an Access Point (AP), a Transmission Point (TP), or the like, which is not limited in this invention. For convenience of description, the following embodiments will be described by taking a base station and user equipment as examples.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, a schematic diagram of a data transmission process implemented at a base station side according to an embodiment of the present invention is provided, and as shown in the diagram, the process may include the following steps:

step 101: the base station determines N physical shared channels scheduled by a downlink control channel, wherein the N physical shared channels have different coverage enhancement levels and/or repeated transmission times, and N is an integer greater than 1.

The Downlink Control Channel may be transmitted according to a transmission mode of an Enhanced Physical Downlink Control Channel (EPDCCH).

The physical shared channel scheduled by the downlink control channel may include: a Physical Downlink Shared Channel (PDSCH) and/or a Physical Uplink Shared Channel (PUSCH). The physical downlink shared channel may be a physical downlink shared channel carrying one or a combination of the following: paging message, Random Access Response (RAR), and Downlink-Shared Channel (DL-SCH) Transport Block (TB).

Step 102: and the base station sends the downlink control channel, and the scheduling information of the N physical shared channels is borne in the downlink control channel.

The scheduling information of the N physical shared channels may be carried in DCI (Downlink control information). The scheduling information of the physical shared channel may include various information, for example, one or a combination of the following kinds of information: resource allocation information, scheduling coding information, HARQ (Hybrid Automatic Repeat reQuest) information, new data information, redundancy version information, transmission format information, power control information, and the like.

In the embodiment of the invention, the scheduling information of the N physical shared channels carried by the downlink control channel can be cascaded together according to a set sequence. Several preferred cascading ways are given below by way of example.

Cascade system one

The DCI used by the downlink control channel comprises N scheduling information domains, each scheduling information domain bears the indication information contained in the scheduling information of one of the N physical shared channels, and the N scheduling information domains are sequentially cascaded.

Each scheduling information field comprises a plurality of indication fields, and each indication field is used for carrying one type of scheduling information. The indication field is an information unit, and the information unit may carry scheduling information, such as resource allocation information or scheduling coding information. According to the content carried by the information unit, different indication fields can be distinguished by naming the unit, for example, the information unit carrying the resource allocation information is called a resource allocation indication field, the unit carrying the scheduling coding information is called a scheduling coding indication field, and so on. The meaning of the indication field in the following embodiments is the same, and is not described again.

Taking the example that the scheduling information field of one physical shared channel includes M indication fields, an implementation manner adopting the first cascade manner is as follows: n scheduling information domains are sequentially cascaded, and M indication domains contained in each scheduling information domain are sequentially cascaded.

Fig. 2 exemplarily shows a DCI employing the above-described concatenation method one. Where N is 3, that is, the number of physical shared channels scheduled by the downlink control channel is 3, and the 3 physical shared channels have different coverage enhancement levels, which are respectively expressed as: level1, level2 and level 3. In an example, as shown in fig. 2, one DCI includes 3 sequentially concatenated scheduling information fields, a level1 scheduling information field includes M sequentially concatenated indication fields in a scheduling information field covering a physical shared channel with an enhancement level of level1, a level2 scheduling information field includes M sequentially concatenated indication fields in a scheduling information field covering a physical shared channel with an enhancement level of level2, and a level3 scheduling information field includes M sequentially concatenated indication fields in a scheduling information field covering a physical shared channel with an enhancement level of level 3.

Cascade system two

The DCI used by the downlink control channel comprises N scheduling information domains, each scheduling information domain bears the indication information contained in the scheduling information of one of the N physical shared channels, and the N scheduling information domains are in interleaving cascade connection.

Each scheduling information field comprises a first indication field, a second indication field and an M indication field, each indication field is used for bearing one type of indication information, and M is an integer larger than 1. One implementation mode adopting the second cascade mode is as follows: the DCI comprises M information domains which are sequentially cascaded, each information domain comprises the same type of indication information in scheduling information domains of N physical shared channels, and the N indication information contained in each information domain is sequentially cascaded.

Fig. 3 exemplarily shows a DCI employing the above-described concatenation mode two. Where N is 3, that is, the number of physical shared channels scheduled by the downlink control channel is 3, and the 3 physical shared channels have different coverage enhancement levels, which are respectively expressed as: level1, level2 and level 3. In one example, as shown in fig. 3, one DCI includes M sequentially concatenated information fields, each of which includes 3 indication fields, where the 1 st information field includes a resource allocation indication field in a scheduling information field of 3 physical shared channels, the 2 nd indication field includes a scheduling coding indication field in a scheduling information field of 3 physical shared channels, and so on. It can be seen that the scheduling information fields of the N physical shared channels are cascaded in an interleaving manner, for example, according to the functional order of the scheduling information fields, the scheduling information fields of the physical shared channels with different coverage enhancement levels and/or repeated transmission times are cascaded in the scheduling information field of the same function in an interleaving manner. The indication fields of level1 in the 1 st to third information fields constitute a scheduling information field covering a physical shared channel with an enhancement level of level1, and so on.

Cascade connection mode three

The DCI used by the downlink control channel comprises 1 shared information domain and N dedicated scheduling information domains, wherein the shared information domain is used for bearing a shared content part in the scheduling information of the N physical shared channels, each dedicated scheduling information domain is used for bearing a dedicated content part in the scheduling information of one channel of the N physical shared channels, and the N dedicated scheduling information domains are sequentially cascaded.

As mentioned above, the scheduling information of the physical shared channel may include a plurality of information, wherein some of the scheduling information may be shared by the N physical shared channels and may be carried in a shared information field, and other portions of the scheduling information are dedicated to each physical shared channel and are carried in dedicated information fields of the respective physical shared channels.

The indication fields in one DCI generally include a resource allocation indication field, a modulation coding indication field, a HARQ process number indication field, a new data indication field, a redundancy version indication field, and the like. Considering that a plurality of PDSCHs scheduled by one DCI are transmitted independently, when each PDSCH needs to correspond to independent HARQ process number indication field and new data indication field, at least the two fields cannot be shared, and the redundancy version indication field can be shared from the perspective of saving signaling overhead. In some other examples, some scheduling information or information may be shared as desired. For example, if the modulation coding of different coverage enhancement levels is not very different, the modulation coding indication field may be shared; if a plurality of PDSCHs are sent in a TDM mode, the resource allocation indication domain can be shared from the aspect of saving signaling overhead; if the frequency domain resource positions of different PDSCHs need to be scheduled more flexibly, the resource allocation indication domain does not need to be shared; if multiple PDSCHs are sent in FDM manner, because the frequency domain positions are definitely different, the resource allocation indication domain may not be shared, or the resource allocation indication domain may be further divided into a narrowband indication domain and a PRB indication domain in a narrowband, then the narrowband indication domain may not be shared, and the PRB indication domain in the narrowband may be shared.

Fig. 4 exemplarily shows a DCI employing the above-described concatenation method one. Where N is 3, that is, the number of physical shared channels scheduled by the downlink control channel is 3, and the 3 physical shared channels have different coverage enhancement levels, which are respectively expressed as: level1, level2 and level 3. In an example, as shown in fig. 4, one DCI includes 1 shared information field and 3 dedicated scheduling information fields of physical communication channels, where the shared information field carries shared scheduling information of the 3 physical shared channels, and each dedicated scheduling information field includes K indication fields in the scheduling information field of one physical control channel, and K is less than or equal to M. The shared information field and the exclusive scheduling information field of level1 form a scheduling information field of a physical shared channel with a coverage enhancement level of level1, and so on.

Cascade system four

The DCI used by the downlink control channel comprises 1 shared information domain and N dedicated scheduling information domains, wherein the shared information domain is used for bearing a shared content part in the scheduling information of the N physical shared channels, each dedicated scheduling information domain is used for bearing a dedicated content part in the scheduling information of one channel of the N physical shared channels, and the N dedicated scheduling information domains are in interleaving cascade connection.

Wherein the N dedicated scheduling information fields are interleaved and cascaded by: the DCI comprises K information domains which are sequentially cascaded, each information domain comprises indication information of the same type in exclusive intra-field section in scheduling information of N physical shared channels, and the N indication information contained in each information domain are sequentially cascaded.

As mentioned above, the scheduling information of the physical shared channel may include a plurality of information, wherein some of the scheduling information may be shared by the N physical shared channels and may be carried in a shared information field, and other portions of the scheduling information are dedicated to each physical shared channel, and one dedicated information field may carry the same indication field in the scheduling information of the N physical shared channels.

Fig. 5 exemplarily shows a DCI employing the above-described concatenation method one. Where N is 3, that is, the number of physical shared channels scheduled by the downlink control channel is 3, and the 3 physical shared channels have different coverage enhancement levels, which are respectively expressed as: level1, level2 and level 3. In an example, as shown in fig. 5, one DCI includes 1 shared information field and K information fields, where the shared information field carries shared scheduling information of 3 physical shared channels, each information field includes 3 indication fields, and the scheduling information fields carrying the 3 physical shared channels respectively carry indication fields of the same type of scheduling information, for example, the 1 st information field includes 3 indication fields, which are resource allocation indication fields in the scheduling information fields of the first to third physical shared channels respectively, the 2 nd information field includes 3 indication fields, which are scheduling coding indication fields in the scheduling information fields of the first to third physical shared channels respectively, and so on. The shared information field and the indication field of level1 in the 1 st to Kth information fields form a scheduling information field covering a physical shared channel with an enhancement level of level1, and so on.

In the above various concatenation manners, when all or part of the indication fields in the scheduling information of one physical shared channel are set to a specific value, it indicates that the downlink control channel does not include the scheduling information having the physical shared channel, and the specific value is a value different from a parameter value of the scheduling information. For example, if the downlink control channel does not include the scheduling information of the physical shared channel with the coverage enhancement level of level1, one indication field, for example, the resource allocation indication field, in the scheduling information of the physical shared channel with the coverage enhancement level of level1 may be set to a specific value, such as a bit sequence of all 0 or all 1, and when the terminal detects that the resource allocation indication field of the scheduling information of the physical shared channel corresponding to the coverage enhancement level of level1 in the DCI is the above-specified value, it is determined that the scheduling information of the physical shared channel with the coverage enhancement level of level1 is not actually transmitted in the DCI.

Optionally, the physical shared channel scheduled by the downlink control channel may be repeatedly transmitted, and accordingly, the downlink control channel may also carry the number of times of repeated transmission of the N physical shared channels.

Optionally, in step 102, the base station may repeatedly transmit the downlink control channel. Preferably, the base station may perform repeated transmission according to the maximum number of repeated transmissions in the target user equipment scheduled by the downlink control channel. That is, if the target ue scheduled by the downlink control channel includes 3 coverage enhancement levels, the number of repeated transmissions of the downlink control channel corresponding to the coverage enhancement level1 is N1, the number of repeated transmissions of the downlink control channel corresponding to the coverage enhancement level2 is N2, and the number of repeated transmissions of the downlink control channel corresponding to the coverage enhancement level3 is N3, the number of repeated transmissions of the downlink control channel is determined to be max (N1, N2, N3), where max is an operation of taking a maximum value.

Further, in the flow shown in fig. 1, after step 102, the following steps are also included (this step is not shown in the figure): step 103: and the base station transmits the N physical shared channels. Specifically, in the downlink direction, the base station may send N physical downlink shared channels to the target user equipment scheduled by the downlink control channel, and in the uplink direction, the base station may receive N physical uplink shared channels sent by the target user equipment scheduled by the downlink control channel.

In step 103, the N physical shared channels may be repeatedly transmitted in a TDM manner, that is, the base station transmits the N physical shared channels according to a set sequence.

For example, after the repeated transmission is completed, the physical shared channel with the first coverage enhancement level and/or the repeated transmission times is repeatedly transmitted first, and after the repeated transmission is completed, the physical shared channel with the second coverage enhancement level and/or the repeated transmission times is repeatedly transmitted, and so on.

In some embodiments of the present invention, the set sequence may include one of the following:

-in order of low to high coverage enhancement level and/or number of repeated transmissions;

-in order of high to low coverage enhancement level and/or number of repeated transmissions;

-in a predetermined interleaved order for different coverage enhancement levels and/or number of repeated transmissions.

Of course, other transmission sequences than the ones given above are not excluded.

Alternatively, the timing relationship of the starting transmission subframe of the N physical shared channels may be: the initial transmission subframe of the N physical shared channels is a first available subframe behind an N + k subframe; wherein n represents the number of the last subframe in the downlink control channel transmission time period in which the downlink control channel is transmitted, and k is an integer greater than or equal to 1. Optionally, according to the set sequence, the transmission start subframe of the (i + 1) th physical shared channel is a first available subframe after the last repeated transmission subframe of the ith physical shared channel; according to the set sequence, the transmission sequence of the (i + 1) th physical shared channel is arranged behind the ith physical shared channel, and i is more than or equal to 1 and less than or equal to N.

In step 103, preferably, the number of times of the repeated transmission of the N physical shared channels is predefined; alternatively, the number of retransmissions of the N physical shared channels is obtained from a correspondence between a Transport Block Size (TBS) and the number of retransmissions in the coverage enhancement level.

In step 103, the N physical downlink shared channels may also be repeatedly transmitted in an FDM manner, that is, the base station transmits the N physical downlink shared channels on different frequency domain resources. Further, the DCI used by the downlink control channel includes independent scheduling information for indicating frequency domain resources of each of the N physical shared channels.

The frequency-domain resources may include only one of narrowband information and PRB information, that is, N physical shared channels may be transmitted by different PRBs in the same narrowband, or transmitted by PRBs in different narrowbands with the same relative position in the narrowband, or include both narrowband information and PRB information, that is, N physical shared channels may be transmitted by different PRBs in the same narrowband, or transmitted by PRBs in different narrowbands with the same relative position in the narrowband, or transmitted by PRBs in different narrowbands with different relative positions in the narrowband.

Optionally, in each of the embodiments of the present invention, the DCI used for the downlink control channel is always designed according to the total number of different coverage enhancement levels and/or different retransmission times existing in the system, that is, if 3 coverage enhancement levels and/or 3 retransmission times are supported in the system, the DCI always includes the scheduling information field of the physical shared channel of 3 coverage enhancement levels and/or 3 retransmission times; during actual transmission, if the number of the coverage enhancement levels and/or the number of repeated transmission times of the physical shared channel which needs to be transmitted currently is less than the maximum number indicated by the system, setting all or part of indication fields in the scheduling information of the physical shared channel which does not need the scheduled coverage enhancement levels and/or the number of repeated transmission times as specific values, and indicating that the downlink control channel does not contain the scheduling information of the physical shared channel with the coverage enhancement levels and/or the number of repeated transmission times.

As can be seen from the above description, in the above embodiments of the present invention, since one downlink control channel carries scheduling information of physical shared channels with different coverage enhancement levels and/or repetition transmission times, independent transmission of the physical shared channels with different repetition times is realized, and resource collision of data transmission scheduled by the downlink control channel is avoided.

Referring to fig. 6, a data transmission procedure implemented by the user equipment side according to the embodiment of the present invention is shown. As shown, the process may include the following steps:

step 601: the method comprises the steps that user equipment receives a downlink control channel, scheduling information of N physical shared channels is carried in the downlink control channel, the N physical shared channels have different coverage enhancement grades and/or repeated transmission times, and N is an integer larger than 1.

The downlink control channel may be transmitted according to an EPDCCH transmission mode. The physical shared channel scheduled by the downlink control channel may include: PDSCH and/or PUSCH. The physical downlink shared channel may be a physical downlink shared channel carrying one or a combination of the following: paging message, RAR message, DL-SCH TB.

Step 602: and the user equipment performs data transmission on the N physical shared channels according to the scheduling information of the N physical shared channels borne in the downlink control channel.

In the uplink direction, the user equipment can send uplink data according to the PUSCH scheduled by the downlink control channel; and/or, in the downlink direction, the ue may receive downlink data according to the PDSCH scheduled by the downlink control channel.

In the above procedure, the downlink control channel schedules the N physical shared channels with different coverage enhancement levels and/or retransmission times, as described below.

The scheduling information of the N physical shared channels may be carried in DCI. The scheduling information of the physical shared channel may include various information, for example, one or a combination of the following kinds of information: resource allocation information, scheduling coding information, HARQ information, new data information, redundancy version information, transport format information, power control information, and the like.

In the embodiment of the invention, the scheduling information of the N physical shared channels carried by the downlink control channel can be cascaded together according to a set sequence. Specifically, in some embodiments of the present invention, the DCI for the downlink control channel includes N scheduling information fields, each of the scheduling information fields carries indication information included in scheduling information of one of the N physical shared channels, and the N scheduling information fields are sequentially cascaded or interleaved and cascaded. In other embodiments of the present invention, a DCI used for a downlink control channel includes 1 shared information field and N dedicated scheduling information fields, where the shared information field is used to carry a shared content portion in scheduling information of the N physical shared channels, each dedicated scheduling information field is used to carry a dedicated content portion in scheduling information of one of the N physical shared channels, and the N dedicated scheduling information fields are sequentially cascaded or interleaved and cascaded.

Each scheduling information field comprises a first indication field, a second indication field and an M indication field, each indication field is used for bearing one type of indication information, and M is an integer larger than 1. The N scheduling information domains are interleaved and cascaded, namely: the DCI comprises M information domains which are sequentially cascaded, each information domain comprises the same type of indication information in the scheduling information of N physical shared channels, and the N indication information contained in each information domain is sequentially cascaded; the N exclusive scheduling information domains are interleaved and cascaded, namely: the DCI comprises K information domains which are sequentially cascaded, each information domain comprises the same type of indication information in the exclusive content part in the scheduling information of the N physical shared channels, and the N indication information contained in each information domain are sequentially cascaded.

The specific cascading manner and examples are the same as those of the foregoing embodiments, and are not described herein again.

The downlink control channel is typically transmitted repeatedly. Optionally, in the embodiment of the present invention, the maximum number of repeated transmissions in the target user equipment scheduled by the downlink control channel is repeatedly transmitted, so as to ensure that the user equipment can receive and demodulate.

Further, the downlink control channel may also carry the number of retransmission times of the N physical shared channels. In this way, the user equipment can perform data transmission on the scheduled physical shared channel according to the repeated transmission times of the physical shared channel carried in the downlink control channel. Wherein the number of repeated transmissions of the N physical shared channels is predefined; or, the number of retransmissions of the N physical shared channels is obtained according to a correspondence between the TBS and the number of retransmissions in the coverage enhancement level.

The N physical shared channels may be transmitted in a TDM manner, and in this case, the N physical shared channels are transmitted according to a set sequence, wherein a next physical shared channel starts to be transmitted after one physical shared channel is repeatedly transmitted.

Preferably, the set precedence order may include: according to the sequence of the coverage enhancement grade and/or the repeated transmission times from low to high; or, according to the sequence of the coverage enhancement grade and/or the repeated transmission times from high to low; or in a predetermined interleaved order for different coverage enhancement levels and/or number of repeated transmissions.

Further, in a case that the N physical shared channels can be transmitted in a TDM manner, a timing relationship of transmission subframes of the N physical shared channels may be: and the initial transmission subframe of the N physical shared channels is the first available subframe after the subframe of N + k, wherein N represents the number of the last subframe in the downlink control channel transmission time period in which the downlink control channel is transmitted, and k is an integer greater than or equal to 1. Further, according to the set sequence, the transmission starting subframe of the (i + 1) th physical shared channel is the first available subframe after the last repeated transmission subframe of the ith physical shared channel; according to the set sequence, the transmission sequence of the (i + 1) th physical shared channel is arranged behind the ith physical shared channel, and i is more than or equal to 1 and less than or equal to N.

The N physical downlink shared channels may be transmitted in an FDM manner, and in this case, the N physical downlink shared channels are transmitted on different frequency domain resources. The DCI used by the downlink control channel may include independent scheduling information indicating frequency domain resources of each of the N physical shared channels.

In order to more clearly understand the embodiments of the present invention, a specific implementation process of the above embodiments of the present invention is described below with reference to a specific scenario.

As shown in fig. 7, for an RAR message, a PDSCH carrying the message is transmitted in an FDM manner, when acquiring scheduling information of a PDSCH carrying the RAR message, a ue detects a RA-RNTI scrambled downlink control channel in a common search space according to a DCI format designed when the PDSCH is transmitted in the FDM manner, the scheduling information of different coverage enhancement levels and/or repeated transmission times in the DCI respectively includes an indication field for indicating narrowband information where the PDSCH of the coverage enhancement level and/or repeated transmission times is transmitted, and the PDSCH carrying the RAR message of different coverage enhancement levels and/or repeated transmission times scheduled by the ue is repeatedly transmitted in different narrowband frequency division manners as shown in the drawing; the scheduling timing relationship between the downlink control channel and the PDSCHs with different coverage enhancement levels and/or repeated transmission times is n + k, where n is the last subframe in the downlink control channel transmission time period (or the last subframe in the downlink control channel repeated transmission, but not necessarily the last subframe in the downlink control channel repeated transmission), and k is a predefined delay value.

As shown in fig. 8, for a paging message, a PDSCH carrying the message is transmitted in a TDM manner, and when acquiring scheduling information of the PDSCH carrying the paging message, the ue detects a P-RNTI scrambled downlink control channel in a common search space according to a DCI format designed when the PDSCH is transmitted in the TDM manner, and repeatedly transmits the scheduled PDSCH carrying paging messages with different coverage enhancement levels and/or repeated transmission times according to a time sequence shown in the figure; the scheduling timing relationship between the downlink control channel and the PDSCH with the coverage enhancement level and/or the level1 is n + k, where n is the last subframe in the downlink control channel transmission time period (or the last subframe of the downlink control channel repeat transmission, but not necessarily the last subframe of the downlink control channel repeat transmission), and k is a predefined delay value.

Based on the same technical concept, the embodiment of the present invention further provides a base station, and the base station can implement the data transmission flow implemented on the base station side described in the foregoing embodiment.

Referring to fig. 9, a schematic structural diagram of a base station provided in the embodiment of the present invention is shown, where the base station may include: a determining module 901 and a sending module 902, wherein:

a determining module 901, configured to determine N physical shared channels scheduled by one downlink control channel, where the N physical shared channels have different coverage enhancement levels and/or repeated transmission times, and N is an integer greater than 1;

a sending module 902, configured to send the downlink control channel, where the downlink control channel carries the scheduling information of the N physical shared channels.

Preferably, the scheduling information of the N physical shared channels carried by the downlink control channel is concatenated together according to a set order.

Further preferably, the DCI used by the downlink control channel includes N scheduling information fields, each of the scheduling information fields carries indication information included in scheduling information of one of the N physical shared channels, and the N scheduling information fields are sequentially cascaded or interleaved cascaded; or, the DCI used by the downlink control channel includes 1 shared information domain and N dedicated scheduling information domains, where the shared information domain is used to carry a shared content portion in the scheduling information of the N physical shared channels, each dedicated scheduling information domain is used to carry a dedicated content portion in the scheduling information of one of the N physical shared channels, and the N dedicated scheduling information domains are sequentially cascaded or interleaved and cascaded.

Preferably, the downlink control channel also carries the number of times of repeated transmission of the N physical shared channels.

Preferably, the sending module 902 is specifically configured to: and repeatedly transmitting according to the maximum repeated transmission times in the target user equipment scheduled by the downlink control channel.

Preferably, the sending module 902 is further configured to: and after the downlink control channel is sent, the N physical shared channels are transmitted according to a set sequence, wherein after one physical shared channel is repeatedly transmitted, the next physical shared channel is started to be transmitted.

Still further preferably, the set precedence order includes: according to the sequence of the coverage enhancement grade and/or the repeated transmission times from low to high; or, according to the sequence of the coverage enhancement grade and/or the repeated transmission times from high to low; or in a predetermined interleaved order for different coverage enhancement levels and/or number of repeated transmissions.

Preferably, the starting transmission subframe of the N physical shared channels is a first available subframe after an N + k subframe; wherein n represents the number of the last subframe in the downlink control channel transmission time period in which the downlink control channel is transmitted, and k is an integer greater than or equal to 1. According to the set sequence, the transmission starting subframe of the (i + 1) th physical shared channel is the first available subframe after the last repeated transmission subframe of the ith physical shared channel; according to the set sequence, the transmission sequence of the (i + 1) th physical shared channel is arranged behind the ith physical shared channel, and i is more than or equal to 1 and less than or equal to N.

Still further preferably, the number of repeated transmissions of the N physical shared channels is predefined; or, the number of retransmissions of the N physical shared channels is obtained according to a correspondence between the TBS and the number of retransmissions in the coverage enhancement level.

Preferably, the sending module 902 is further configured to: and after the downlink control channel is sent, the N physical downlink shared channels are transmitted on different frequency domain resources. The DCI used by the downlink control channel includes independent scheduling information for indicating frequency domain resources of each of the N physical shared channels.

Referring to fig. 10, a schematic structural diagram of a base station provided in the embodiment of the present invention is shown, where the base station may include: a processor 1001, a memory 1002, a transceiver 1003, and a bus interface.

The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1002 may store data used by the processor 1001 in performing operations. The transceiver 1003 is used for receiving and transmitting data under the control of the processor 1001.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 1001, and various circuits, represented by the memory 1002, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1003 may be a number of elements including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1002 may store data used by the processor 1001 in performing operations.

The data transmission flow at the base station side disclosed in the embodiment of the present invention may be applied to the processor 1001, or implemented by the processor 1001. In implementation, the steps of the data transmission flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1001. The processor 1001 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1002, and the processor 1001 reads the information in the memory 1002 and completes the steps of the data transmission flow in combination with the hardware thereof.

Specifically, the processor 1001, configured to read a program in the memory 1002, executes the following processes:

determining N physical shared channels scheduled by a downlink control channel, wherein the N physical shared channels have different coverage enhancement levels and/or repeated transmission times, and N is an integer greater than 1;

and sending the downlink control channel, wherein the downlink control channel bears the scheduling information of the N physical shared channels.

Preferably, the processor 1001 may be specifically configured to: and instructing the transceiver 1003 to perform repeated transmission according to the maximum repeated transmission times in the target user equipment scheduled by the downlink control channel.

Preferably, the processor 1001 is further operable to: after the downlink control channel is sent by the transceiver 1003, the N physical shared channels are transmitted by the transceiver 1003 according to a set sequence, wherein after one physical shared channel is repeatedly transmitted, the next physical shared channel starts to be transmitted.

Preferably, the processor 1001 is further operable to: after the downlink control channel is sent through the transceiver 1003, the N physical downlink shared channels are transmitted on different frequency domain resources. The DCI used by the downlink control channel includes independent scheduling information for indicating frequency domain resources of each of the N physical shared channels.

Based on the same technical concept, the embodiment of the invention provides the user equipment. The ue may implement the data transmission procedure implemented on the ue side as described in the foregoing embodiments.

Referring to fig. 11, a schematic structural diagram of a user equipment provided in an embodiment of the present invention is shown, where the user equipment may include: receiving module 1101, data transmission module 1102, wherein:

a receiving module 1101, configured to receive a downlink control channel, where the downlink control channel carries scheduling information of the N physical shared channels, where the N physical shared channels have different coverage enhancement levels and/or repeated transmission times, and N is an integer greater than 1;

a data transmission module 1102, configured to perform data transmission on the N physical shared channels according to scheduling information of the N physical shared channels carried in the downlink control channel.

Preferably, the maximum number of repeated transmissions in the target user equipment scheduled by the downlink control channel is repeatedly transmitted.

The N physical shared channels may be transmitted in a TDM manner. In this case, preferably, the N physical shared channels are transmitted according to a set sequence, where after one physical shared channel is completed by repeated transmission, transmission of a next physical shared channel is started.

Further more preferably, the set precedence order includes: according to the sequence of the coverage enhancement grade and/or the repeated transmission times from low to high; or, according to the sequence of the coverage enhancement grade and/or the repeated transmission times from high to low; or in a predetermined interleaved order for different coverage enhancement levels and/or number of repeated transmissions.

Preferably, the timing relationship of the transmission subframes of the N physical shared channels may be: the initial transmission subframe of the N physical shared channels is a first available subframe behind an N + k subframe; wherein n represents the number of the last subframe in the downlink control channel transmission time period in which the downlink control channel is transmitted, and k is an integer greater than or equal to 1. Furthermore, according to the set sequence, the transmission starting subframe of the (i + 1) th physical shared channel is the first available subframe after the last repeated transmission subframe of the (i) th physical shared channel; according to the set sequence, the transmission sequence of the (i + 1) th physical shared channel is arranged behind the ith physical shared channel, and i is more than or equal to 1 and less than or equal to N.

Preferably, the number of repeated transmissions of the N physical shared channels is predefined; or, the number of retransmissions of the N physical shared channels is obtained according to a correspondence between the TBS and the number of retransmissions in the coverage enhancement level.

The N physical shared channels may be transmitted in a TDM manner. In this case, the N physical downlink shared channels are transmitted on different frequency domain resources. Further, the DCI used by the downlink control channel includes independent scheduling information for indicating frequency domain resources of each of the N physical shared channels.

Based on the same technical concept, another embodiment of the present invention provides a user equipment. The ue may implement the data transmission procedure implemented on the ue side as described in the foregoing embodiments.

Referring to fig. 12, a schematic structural diagram of a user equipment provided in an embodiment of the present invention is shown, where the user equipment may include: a processor 1201, a memory 1202, a transceiver 1203, and a bus interface.

The processor 1201 is responsible for managing a bus architecture and general processing, and the memory 1202 may store data used by the processor 1201 in performing operations. The transceiver 1203 is configured to receive and transmit data under the control of the processor 1201.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 1201, and various circuits, represented by the memory 1202, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1203 may be a plurality of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 1201 is responsible for managing a bus architecture and general processing, and the memory 1202 may store data used by the processor 1201 in performing operations.

The data transmission flow at the user equipment side disclosed in the embodiment of the present invention may be applied to the processor 1201, or implemented by the processor 1201. In implementation, the steps of the data transmission flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1201. The processor 1201 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1202, and the processor 1201 reads information in the memory 1202 and completes steps of a data transmission flow in combination with hardware thereof.

Specifically, the processor 1201, configured to read a program in the memory 1202, executes the following processes:

receiving a downlink control channel, wherein the downlink control channel carries scheduling information of the N physical shared channels, the N physical shared channels have different coverage enhancement levels and/or repeated transmission times, and N is an integer greater than 1;

and transmitting data on the N physical shared channels according to the scheduling information of the N physical shared channels carried in the downlink control channel.

In summary, in the data transmission scheme provided in the embodiment of the present invention, one downlink control channel indicates scheduling information of shared channels of multiple user equipments with different coverage enhancement levels and/or repetition transmission times, so that the physical shared channels can be sent in TDM or FDM, thereby implementing independent sending of shared channels with different repetition times.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method of data transmission, comprising:

2. The method of claim 1, wherein the scheduling information of the N physical shared channels carried by the downlink control channel is concatenated according to a set order.

3. The method of claim 2, wherein the DCI for the downlink control channel includes N scheduling information fields, each of the scheduling information fields carrying indication information included in scheduling information of one of the N physical shared channels, and the N scheduling information fields are sequentially concatenated or interleaved; or

The DCI used by the downlink control channel comprises 1 shared information domain and N dedicated scheduling information domains, wherein the shared information domain is used for bearing a shared content part in the scheduling information of the N physical shared channels, each dedicated scheduling information domain is used for bearing a dedicated content part in the scheduling information of one channel of the N physical shared channels, and the N dedicated scheduling information domains are sequentially cascaded or interleaved and cascaded.

4. The method of claim 3, wherein each scheduling information field includes first to Mth indication fields, each indication field for carrying one type of indication information, M being an integer greater than 1;

the N scheduling information domains are interleaved and cascaded, namely: the DCI comprises M information domains which are sequentially cascaded, each information domain comprises the same type of indication information in the scheduling information of N physical shared channels, and the N indication information contained in each information domain is sequentially cascaded;

the N exclusive scheduling information domains are interleaved and cascaded, namely: the DCI comprises K information domains which are sequentially cascaded, each information domain comprises the same type of indication information in the exclusive content part in the scheduling information of the N physical shared channels, and the N indication information contained in each information domain are sequentially cascaded.

5. The method of claim 1, wherein the downlink control channel further carries a number of retransmissions of the N physical shared channels.

6. The method of claim 1, wherein the base station transmitting the downlink control channel comprises:

and the base station repeatedly transmits according to the maximum repeated transmission times in the target user equipment scheduled by the downlink control channel.

7. The method of claim 1, wherein after the base station transmits the downlink control channel, further comprising:

and the base station transmits the N physical shared channels according to a set sequence, wherein after one physical shared channel is repeatedly transmitted, the next physical shared channel is started to be transmitted.

8. The method of claim 7, wherein the set precedence order comprises:

according to the sequence of the coverage enhancement grade and/or the repeated transmission times from low to high; or

According to the coverage enhancement grade and/or the repeated transmission times from high to low; or,

according to a predetermined interleaved sequence for different coverage enhancement levels and/or number of repeated transmissions.

9. The method of claim 7, wherein a starting transmission subframe of the N physical shared channels is a first available subframe after an N + k subframe; wherein n represents the number of the last subframe in the downlink control channel transmission time period in which the downlink control channel is transmitted, and k is an integer greater than or equal to 1.

10. The method according to claim 9, wherein according to the set sequence, the transmission start subframe of the (i + 1) th physical shared channel is a first available subframe after a last repeated transmission subframe of the (i) th physical shared channel; according to the set sequence, the transmission sequence of the (i + 1) th physical shared channel is arranged behind the ith physical shared channel, and i is more than or equal to 1 and less than or equal to N.

11. The method of claim 7, wherein a number of repeated transmissions of the N physical shared channels is predefined; or

The number of retransmissions for the N physical shared channels is obtained from a correspondence between a transport block size, TBS, and the number of retransmissions for the coverage enhancement level.

12. The method of claim 1, wherein after the base station transmits the downlink control channel, further comprising:

and the base station transmits the N physical downlink shared channels on different frequency domain resources.

13. The method of claim 12, wherein the DCI used by the downlink control channel includes separate scheduling information indicating frequency domain resources of each of the N physical shared channels.

14. The method of any one of claims 1 to 13, wherein the physical shared channel comprises: a physical downlink shared channel and/or a physical uplink shared channel.

15. The method of claim 14, wherein the physical downlink shared channel is a physical downlink shared channel carrying one or a combination of the following: paging message, random access response message, and downlink shared channel transmission block.

16. A method of data transmission, comprising:

17. The method of claim 16, wherein the scheduling information of the N physical shared channels carried by the downlink control channel is concatenated according to a set order.

18. The method of claim 17, wherein the DCI for the downlink control channel includes N scheduling information fields, each of the scheduling information fields carrying indication information included in scheduling information of one of the N physical shared channels, and the N scheduling information fields are sequentially concatenated or interleaved; or

19. The method of claim 18, wherein each scheduling information field includes first to mth indication fields, each indication field for carrying one type of indication information, M being an integer greater than 1;

20. The method of claim 16, wherein the downlink control channel further carries a number of retransmissions of the N physical shared channels.

21. The method of claim 16, wherein the downlink control channel is repeatedly transmitted for a maximum number of repeated transmissions in the scheduled target user equipment.

22. The method of claim 16, wherein the N physical shared channels are transmitted according to a set sequence, and wherein a transmission of a next physical shared channel is started after a physical shared channel is repeatedly transmitted.

23. The method of claim 22, wherein the sequencing comprises:

24. The method of claim 22, wherein a starting transmission subframe of the N physical shared channels is a first available subframe after an N + k subframe; wherein n represents the number of the last subframe in the downlink control channel transmission time period in which the downlink control channel is transmitted, and k is an integer greater than or equal to 1.

25. The method according to claim 24, wherein according to the set sequence, the transmission start subframe of the (i + 1) th physical shared channel is a first available subframe after a last repeated transmission subframe of the (i) th physical shared channel; according to the set sequence, the transmission sequence of the (i + 1) th physical shared channel is arranged behind the ith physical shared channel, and i is more than or equal to 1 and less than or equal to N.

26. The method of claim 22, wherein a number of repeated transmissions of the N physical shared channels is predefined; or

27. The method of claim 16, wherein the N physical downlink shared channels are transmitted on different frequency domain resources.

28. The method of claim 27, wherein the DCI used by the downlink control channel includes separate scheduling information indicating frequency domain resources of each of the N physical shared channels.

29. The method of any one of claims 16 to 28, wherein the physical shared channel comprises: a physical downlink shared channel and/or a physical uplink shared channel.

30. The method of claim 29, wherein the physical downlink shared channel is a physical downlink shared channel carrying one or a combination of the following: paging message, random access response message, and downlink shared channel transmission block.

31. A base station, comprising:

32. The base station of claim 31, wherein the scheduling information of the N physical shared channels carried by the downlink control channel is concatenated according to a set order.

33. The base station of claim 32, wherein the DCI for the downlink control channel includes N scheduling information fields, each of the scheduling information fields carries indication information included in scheduling information of one of the N physical shared channels, and the N scheduling information fields are sequentially concatenated or interleaved; or

34. The base station of claim 33, wherein each scheduling information field comprises first to mth indication fields, each indication field for carrying one type of indication information, M being an integer greater than 1;

35. The base station of claim 31, wherein the downlink control channel further carries a number of retransmissions for the N physical shared channels.

36. The base station of claim 31, wherein the sending module is specifically configured to: and repeatedly transmitting according to the maximum repeated transmission times in the target user equipment scheduled by the downlink control channel.

37. The base station of claim 31, wherein the transmitting module is further configured to: and after the downlink control channel is sent, the N physical shared channels are transmitted according to a set sequence, wherein after one physical shared channel is repeatedly transmitted, the next physical shared channel is started to be transmitted.

38. The base station of claim 37, wherein the set precedence order comprises:

39. The base station of claim 37, wherein the starting transmission subframe of the N physical shared channels is a first available subframe after an N + k subframe; wherein n represents the number of the last subframe in the downlink control channel transmission time period in which the downlink control channel is transmitted, and k is an integer greater than or equal to 1.

40. The base station of claim 39, wherein according to the set sequence, the transmission start subframe of the (i + 1) th physical shared channel is a first available subframe after a last repeated transmission subframe of the (i) th physical shared channel; according to the set sequence, the transmission sequence of the (i + 1) th physical shared channel is arranged behind the ith physical shared channel, and i is more than or equal to 1 and less than or equal to N.

41. The base station of claim 37, wherein the number of repeated transmissions of the N physical shared channels is predefined; or

42. The base station of claim 31, wherein the transmitting module is further configured to: and after the downlink control channel is sent, the N physical downlink shared channels are transmitted on different frequency domain resources.

43. The base station of claim 42, wherein the DCI used by the downlink control channel includes independent scheduling information indicating frequency domain resources of each of the N physical shared channels.

44. A user device, comprising:

45. The UE of claim 44, wherein the scheduling information of the N physical shared channels carried by the DCCH are concatenated according to a set order.

46. The UE of claim 45, wherein the DCI used by the DCI comprises N scheduling information fields, each of the scheduling information fields carrying indication information included in scheduling information of one of the N physical shared channels, and the N scheduling information fields are sequentially concatenated or interleaved; or

47. The UE of claim 46, wherein each scheduling information field comprises first to Mth indication fields, each indication field for carrying one type of indication information, M being an integer greater than 1;

48. The UE of claim 44, wherein the downlink control channel further carries a number of retransmissions for the N physical CCHs.

49. The UE of claim 44, wherein the downlink control channel is scheduled for repeated transmission for a maximum number of repeated transmissions in a target UE.

50. The UE of claim 44, wherein the N physical shared channels are transmitted according to a set sequence, and wherein a transmission of a next physical shared channel is started after a physical shared channel is repeatedly transmitted.

51. The UE of claim 50, wherein the set precedence order comprises:

52. The UE of claim 50, wherein a starting transmission subframe of the N physical shared channels is a first available subframe after an N + k subframe; wherein n represents the number of the last subframe in the downlink control channel transmission time period in which the downlink control channel is transmitted, and k is an integer greater than or equal to 1.

53. The UE of claim 52, wherein according to the set sequence, a transmission start subframe of an (i + 1) th physical shared channel is a first available subframe after a last repeated transmission subframe of the ith physical shared channel; according to the set sequence, the transmission sequence of the (i + 1) th physical shared channel is arranged behind the ith physical shared channel, and i is more than or equal to 1 and less than or equal to N.

54. The UE of claim 50, wherein the number of retransmissions of the N physical shared channels is predefined; or

55. The UE of claim 44, wherein the N physical downlink shared channels are transmitted on different frequency domain resources.

56. The UE of claim 55, wherein the DCI used by the DCI includes separate scheduling information indicating frequency domain resources for each of the N physical shared channels.