WO2017101569A1

WO2017101569A1 - Method and apparatus for transmitting downlink information

Info

Publication number: WO2017101569A1
Application number: PCT/CN2016/101583
Authority: WO
Inventors: 杨维维; 戴博; 梁春丽; 刘颖; 陈琳; 鲁照华; 胡留军
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-12-18
Filing date: 2016-10-09
Publication date: 2017-06-22
Also published as: CN106900059A

Abstract

Provided are a method and apparatus for transmitting downlink information, wherein the method comprises: a base station sending first downlink information, and the base station determining, according to hybrid automatic repeat request (HARQ-ACK), response information corresponding to the received first downlink information, the first downlink information and/or second downlink information corresponding to the first downlink information. The problem that the overhead of transmitting a downlink information resource by an MTC device is relatively large is solved.

Description

Method and device for transmitting downlink information

Technical field

The present invention relates to the field of communications, and in particular to a method and an apparatus for transmitting downlink information.

Background technique

Machine Type Communications (MTC), also known as Machine to Machine (M2M), is the main application form of the Internet of Things in related technologies. The MTC devices currently deployed on the market are mainly based on the Global System of Mobile communication (GSM) system. In recent years, due to the high spectrum efficiency of Long-Term Evolution (LTE)/LTE-Advanced Evolution (LTE-A), more and more mobile operators choose LTE/LTE- A is the evolution direction of the future broadband wireless communication system. MTC multi-class data services based on LTE/LTE-A will also be more attractive. The coverage of the MTC User Equipment (MTC UE) should be further enhanced, and the number of MTC UEs is also large. If the existing downlink information transmission method is still used, downlink information needs to be transmitted for each MTC UE, and the downlink resource overhead is large.

In view of the related art, the problem that the MTC device transmits the downlink information resource has a large overhead, and there is no effective technical solution at present.

Summary of the invention

The embodiment of the invention provides a method and a device for transmitting downlink information, so as to at least solve the problem that the downlink resource overhead of the downlink information transmitted by the MTC UE in the related art is large.

According to an embodiment of the present invention, a method for transmitting downlink information is provided, including:

The base station sends the first downlink information;

Determining, by the base station, the first downlink information and/or the first downlink information according to the Hybrid Automatic Repeat reQuest Acknowledgement (HARQ-ACK) response information corresponding to the received first downlink information. The transmission of the second downlink information corresponding to the line information.

Further, the sending, by the base station, the first downlink information includes: sending, by the base station, the first downlink information to a group of terminals in a broadcast or multicast manner.

Further, the transmitting, by the base station, the first downlink information to the group of terminals in a broadcast or multicast manner includes: the base station periodically transmitting the first downlink information to the fixed time domain and/or the frequency domain resource. Said a group of terminals.

Further, the sending, by the base station, the first downlink information to the group of terminals in a broadcast or multicast manner includes:

The base station sends the first downlink information indication before sending the first downlink information, where the first downlink is The information indication is used to indicate a sending status of the first downlink information and/or a resource used to send the first downlink information.

Further, the group of terminals includes one of the following: a terminal located in the same serving cell, a terminal in the same coverage level, and a terminal that receives the indication of the first downlink information.

Further, the method further includes: the base station as the HARQ-ACK response information according to at least high layer signaling and/or downlink control information (Downlink Control Information, DCI for short) corresponding to the first downlink information. Configure the transmission resource.

Further, the base station determines, according to the received HARQ-ACK response information corresponding to the first downlink information, that the sending of the first downlink information and/or the second downlink information corresponding to the first downlink information includes: The base station sends the second downlink information to the terminal that sends the HARQ-ACK response information.

Further, the base station determines, according to the received HARQ-ACK response information corresponding to the first downlink information, that the sending of the first downlink information and/or the second downlink information corresponding to the first downlink information includes: The base station sends the second downlink information to the terminal in which the HARQ-ACK response information is a non-response/discontinuous transmission non-acknowledgement (Negative ACKnowledge, NACK)/discontinuous transmission (DTX).

Further, the base station determines, according to the received HARQ-ACK response information corresponding to the first downlink information, that the sending of the first downlink information and/or the second downlink information corresponding to the first downlink information includes: When the HARQ-ACK response information received by the base station is that the number/proportion of the NACK/DTX is greater than M, the base station sends the first downlink information, or the base station receives the HARQ-ACK response information. When the number/proportion of the NACK/DTX is less than N, the base station sends the second downlink information to the terminal whose HARQ-ACK response information is NACK/DTX; where M, N is a positive integer greater than 0.

Further, the second downlink information is a repeated transmission of the first downlink information.

Further, the second downlink information and the first downlink information correspond to the same hybrid automatic repeat request HARQ process.

Further, the determining, according to the hybrid automatic repeat request HARQ-ACK response information corresponding to the received first downlink information, the first downlink information and/or the second downlink information corresponding to the first downlink information. The sending: the base station sends the second downlink information indication before sending the second downlink information, where the second downlink information indication is used to indicate that the sent downlink information is the first downlink The second downlink information corresponding to the information.

According to an embodiment of the present invention, a method for receiving downlink information is provided, including:

Receiving, by the terminal, first downlink information sent by the base station;

Receiving, by the terminal, the second downlink information corresponding to the first downlink information according to the receiving state of the first downlink information.

Further, the receiving, by the terminal, the first downlink information sent by the base station includes: receiving, by the terminal, the first downlink information that is sent by the base station in a broadcast or multicast manner.

Further, the receiving, by the terminal, the first downlink information that is sent by the base station in a broadcast or multicast manner includes: the terminal periodically receiving the first downlink information on a fixed time domain and/or a frequency domain resource.

Further, the receiving, by the terminal, the first downlink information that is sent by the base station in a broadcast or multicast manner, includes: the terminal first receiving the first downlink information indication, and receiving, according to the first downlink information indication, First downlink information, where the first downlink information indicates a resource used to indicate a sending status of the first downlink information and/or to send the first downlink information.

And determining, by the terminal, the receiving, by the terminal, the second downlink information corresponding to the first downlink information, according to the receiving state of the first downlink information, that: the terminal incorrectly receiving the first downlink information, where The terminal transmits a hybrid automatic repeat request response HARQ-ACK response information corresponding to the first lower information, and the terminal receives the second downlink information corresponding to the first downlink information.

Further, the determining, by the terminal, the receiving, by the first downlink information, the second downlink information corresponding to the first downlink information, includes:

The terminal erroneously receives the first downlink information, and when the terminal sends the hybrid automatic repeat request response HARQ-ACK response information corresponding to the first lower information to be non-acknowledgement/discontinuous transmission NACK/DTX, The terminal receives the second downlink information corresponding to the first downlink information; or

The terminal correctly receives the first downlink information, and when the HARQ-ACK response information corresponding to the first downlink information sent by the terminal is an acknowledgement ACK, the terminal does not receive the first downlink information. Corresponding to the second downlink information.

Further, the method further includes: the terminal obtaining the transmission resource of the HARQ-ACK response information according to at least one of the following manners: passing the downlink control information corresponding to the first downlink information by using high layer signaling.

The determining, by the terminal, the receiving, by the terminal, the second downlink information corresponding to the first downlink information, according to the receiving state of the first downlink information, includes: before receiving, by the terminal, the second downlink information, Receiving the second downlink information indication, where the second downlink information indicates that the received downlink information is the second downlink information corresponding to the first downlink information.

According to another embodiment of the present invention, a device for transmitting downlink information, located in a base station, includes:

a sending module, configured to send the first downlink information to a group of terminals;

The first receiving module is configured to receive the hybrid automatic repeat request HARQ-ACK response information corresponding to the first downlink information, and determine the first downlink information and/or the second downlink information corresponding to the first downlink information. Send.

According to another embodiment of the present invention, a device for receiving downlink information is provided, which is located in a terminal, and includes:

The second receiving module is configured to receive the first downlink information sent by the base station;

The determining module is configured to determine, according to the receiving state of the first downlink information, a receiving state of the second downlink information corresponding to the first downlink information.

In the embodiment of the present invention, a computer storage medium is further provided, and the computer storage medium may store an execution instruction for performing the implementation of the method for transmitting downlink information in the foregoing embodiment.

According to the embodiment of the present invention, the base station sends the first downlink information, and the base station determines the first downlink information and/or the first according to the hybrid automatic repeat request HARQ-ACK response information corresponding to the received first downlink information. The sending status of the second downlink information corresponding to the downlink information solves the problem that the downlink information resource overhead of the MTC device is large.

DRAWINGS

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

1 is a flowchart of a method for transmitting downlink information according to an embodiment of the present invention;

2 is a flowchart of a method for receiving downlink information according to an embodiment of the present invention;

FIG. 3 is a structural block diagram of a device for transmitting downlink information according to an embodiment of the present invention; FIG.

FIG. 4 is a structural block diagram of a receiving apparatus for downlink information according to an embodiment of the present invention.

detailed description

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

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

In this embodiment, a method for transmitting downlink information is provided. FIG. 1 is a flowchart of a method for transmitting downlink information according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:

Step S102, the base station sends the first downlink information.

Step S104: The base station determines, according to the received HARQ-ACK response information corresponding to the first downlink information, the first downlink information and/or the second downlink information corresponding to the first downlink information.

The base station sends the first downlink information, and the base station determines the first downlink information and/or the first downlink according to the hybrid automatic repeat request HARQ-ACK response information corresponding to the received first downlink information. The sending of the second downlink information corresponding to the information solves the problem that the downlink information resource of the MTC device is expensive.

In this embodiment, the sending, by the base station, the first downlink information includes: the base station transmitting the first downlink information in a broadcast or multicast manner. Send to a group of terminals.

In this embodiment, the sending, by the base station, the first downlink information to the group of terminals in a broadcast or multicast manner includes: the base station periodically transmitting the first downlink information to the fixed time domain and/or the frequency domain resource. The set of terminals.

In this embodiment, the sending, by the base station, the first downlink information to the group of terminals in a broadcast or multicast manner includes:

The first downlink information indication is sent by the base station before the first downlink information is sent, where the first downlink information indication is used to indicate the sending status of the first downlink information, and/or the first downlink is sent. The resources used by the information.

In this embodiment, the group of terminals includes one of the following: a terminal located in the same serving cell, a terminal in the same coverage level, and a terminal that receives the indication of the first downlink information.

In this embodiment, the method further includes: configuring, by the base station, the HARQ-ACK response information according to the high layer signaling and/or the downlink control information (Downlink Control Information, DCI for short) corresponding to the first downlink information. Transfer resources.

In this embodiment, the base station determines, according to the received HARQ-ACK response information corresponding to the first downlink information, that the sending of the first downlink information and/or the second downlink information corresponding to the first downlink information includes: The base station sends the second downlink information to the terminal that sends the HARQ-ACK response information.

In this embodiment, the base station determines, according to the received HARQ-ACK response information corresponding to the first downlink information, that the sending of the first downlink information and/or the second downlink information corresponding to the first downlink information includes: The base station sends the second downlink information to the terminal in which the HARQ-ACK response information is non-acknowledgement/discontinuous transmission (Negative ACKnowledge, NACK)/discontinuous transmission (DTX).

In this embodiment, the base station determines, according to the received HARQ-ACK response information corresponding to the first downlink information, that the sending of the first downlink information and/or the second downlink information corresponding to the first downlink information includes: When the HARQ-ACK response information received by the base station is that the number/proportion of NACK/DTX is greater than M, the base station sends the first downlink information, or the base station receives the HARQ-ACK response information as NACK/DTX. When the number/proportion is less than N, the base station sends the second downlink information to the terminal whose HARQ-ACK response information is NACK/DTX; where M, N is a positive integer greater than 0.

In this embodiment, the second downlink information is a repeated transmission of the first downlink information.

In this embodiment, the second downlink information and the first downlink information correspond to the same hybrid automatic repeat request HARQ process.

In this embodiment, the first downlink information and/or the second downlink information corresponding to the first downlink information is determined according to the hybrid automatic repeat request HARQ-ACK response information corresponding to the received first downlink information. The sending: the base station sends the second downlink information indication before sending the second downlink information, where the second downlink information indication is used to indicate that the sent downlink information is the first corresponding to the first downlink information. Two downlink information.

In this embodiment, a method for receiving downlink information is provided. FIG. 2 is a flowchart of a method for receiving downlink information according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:

Step S202, the terminal receives the first downlink information sent by the base station;

Step S204: The terminal determines, according to the receiving state of the first downlink information, the receiving of the second downlink information corresponding to the first downlink information.

The terminal receives the first downlink information sent by the base station, and the terminal determines the second downlink information corresponding to the first downlink information according to the receiving state of the first downlink information, and solves the downlink transmission of the MTC device. Information accounts for a large amount of resource overhead

In this embodiment, the receiving, by the terminal, the first downlink information sent by the base station includes: receiving, by the terminal, the first downlink information that is sent by the base station in a broadcast or multicast manner.

In this embodiment, the receiving, by the terminal, the first downlink information that is sent by the base station in a broadcast or multicast manner includes: receiving, by the terminal, the first downlink information periodically on a fixed time domain and/or a frequency domain resource.

In this embodiment, the receiving, by the terminal, the first downlink information that is sent by the base station in a broadcast or multicast manner, the first downlink information indication is received by the terminal, and the first downlink information is received according to the first downlink information indication. And the first downlink information indication is used to indicate a sending status of the first downlink information and/or a resource used to send the first downlink information.

In this embodiment, the determining, by the terminal, the second downlink information corresponding to the first downlink information according to the receiving state of the first downlink information includes: the terminal incorrectly receiving the first downlink information, where the terminal sends The hybrid automatic repeat request response HARQ-ACK response information corresponding to the first lower information, the terminal receiving the second downlink information corresponding to the first downlink information.

In this embodiment, the determining, by the terminal, the receiving of the second downlink information corresponding to the first downlink information according to the receiving state of the first downlink information includes:

The terminal erroneously receives the first downlink information, and when the terminal sends the hybrid automatic repeat request response HARQ-ACK response information corresponding to the first lower information to the non-acknowledgement/discontinuous transmission NACK/DTX, the terminal receives the The second downlink information corresponding to the first downlink information;

When the terminal correctly receives the first downlink information, and the HARQ-ACK response information corresponding to the first downlink information sent by the terminal is an acknowledgement ACK, the terminal does not receive the second downlink corresponding to the first downlink information. information.

In this embodiment, the terminal obtains the transmission resource of the HARQ-ACK response information according to at least one of the following manners: through the high layer signaling, the downlink control information corresponding to the first downlink information.

In this embodiment, the determining, by the terminal, the receiving state of the second downlink information corresponding to the first downlink information according to the receiving state of the first downlink information, that the terminal receives the second downlink information before receiving the second downlink information. The second downlink information indicates that the second downlink information indicates that the received downlink information is the second downlink information corresponding to the first downlink information.

In this embodiment, a device for transmitting downlink information is also provided, which is located in a base station, and is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 3 is a structural block diagram of a device for transmitting downlink information according to an embodiment of the present invention. As shown in FIG. 3, the device includes:

The sending module 32 is configured to send the first downlink information to a group of terminals;

The first receiving module 34 is configured to receive the hybrid automatic repeat request HARQ-ACK response information corresponding to the first downlink information, and determine the first downlink information and/or the second downlink information corresponding to the first downlink information. send.

Through the above steps, the sending module 32 sends the first downlink information to a group of terminals, and the first receiving module 34 receives the hybrid automatic repeat request HARQ-ACK response information corresponding to the first downlink information to determine the first downlink information and And transmitting the second downlink information corresponding to the first downlink information, which solves the problem that the downlink information resource overhead of the MTC device is large

In the embodiment, a receiving device for downlink information is provided, which is located in the terminal. FIG. 4 is a structural block diagram of a receiving device for downlink information according to an embodiment of the present invention. As shown in FIG. 4, the device includes :

The second receiving module 42 is configured to receive the first downlink information sent by the base station;

The determining module 44 is configured to determine, according to the receiving state of the first downlink information, the receiving of the second downlink information corresponding to the first downlink information.

Through the above steps, the second receiving module 42 receives the first downlink information sent by the base station, and the determining module 44 determines, according to the receiving state of the first downlink information, the receiving of the second downlink information corresponding to the first downlink information, The problem of excessive resource overhead when the MTC device transmits downlink information.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.

The invention will now be described in detail in connection with the preferred embodiments of the invention.

In a preferred embodiment, an information sending method is applied to a base station side, and the steps are as follows:

Step 501: The base station sends the first downlink information.

Step 502: The base station determines, according to the HARQ-ACK response information corresponding to the first downlink information that is sent by the terminal, the second downlink information corresponding to the first downlink information of the terminal.

In step 501, the base station sends the first downlink information to a group of terminals in a broadcast or multicast manner;

The transmitting, by the base station, the first downlink information to the group of terminals in a broadcast or multicast manner includes: the base station periodically transmitting the first downlink information to the group of terminals on the fixed time domain and/or the frequency domain resource; or the base station Send the first downlink information indication first, And transmitting the first downlink information to the group of terminals; the first downlink information indicates a resource used to indicate the sending status of the first downlink information and/or the sending of the first downlink information.

The group of terminals are terminals located in the same serving cell, or the group of terminals are terminals at the same coverage level, or the group of terminals receives the terminal indicated by the first downlink information;

After the first downlink information is sent by the base station, the base station needs to configure the transmission resource for the HARQ-ACK response information corresponding to the first downlink information according to at least one of the following manners: configured by using high-level signaling; configured by using downlink control information;

In step 502, the base station receives the HARQ-ACK response information sent by the terminal x, and the base station sends the second downlink information to the terminal x. Alternatively, the base station receives the HARQ-ACK response information sent by the terminal x as NACK/DTX, and the base station is the base station. The terminal x sends the second downlink information; the base station receives the HARQ-ACK response information sent by the terminal x as an ACK, and the base station does not send the second downlink information for the terminal x; wherein the second downlink information is the repeated transmission of the first downlink information. The second downlink information and the first downlink information correspond to the same HARQ process;

The determining, by the base station, the sending status of the second downlink information corresponding to the first downlink information of the terminal according to the received HARQ-ACK response information of the first downlink information that is sent by the terminal further includes: the base station is sending the second downlink information. Before the second downlink information indication is sent, the second downlink information indication is used to indicate that the sent downlink information is the second downlink information corresponding to the first lower information;

Preferred embodiment two

The method for transmitting downlink information provided by the present invention further includes:

Step 601: The base station sends the first downlink information.

Step 602: The base station determines, according to the HARQ-ACK response information corresponding to the first downlink information, the sending status of the first downlink information and/or the second downlink information corresponding to the first downlink information.

In step 601, the base station sends the first downlink information to a group of terminals in a broadcast or multicast manner;

In step 602, the base station determines, according to the HARQ-ACK response information corresponding to the first downlink information, that the first downlink information and/or the second downlink information corresponding to the first downlink information is sent by the base station: When the HARQ-ACK response information is that the number/proportion of NACK/DTX is greater than M, the base station sends the first downlink information according to

When the base station receives the HARQ-ACK response information as the number/proportion of NACK/DTX is less than N, the base station sends the second downlink information to the terminal whose feedback information is NACK/DTX; where M, N is a positive integer greater than 0. ;

Preferred Embodiment 3 is a method for receiving information, which is applied to a terminal side, and the steps are as follows:

Step 701: The terminal receives the first downlink information sent by the base station,

Step 702: The terminal determines, according to the receiving state of the first downlink information, a receiving state of the second downlink information.

In step 701, the terminal receives the first downlink information that is sent by the base station in a broadcast or multicast manner;

The terminal periodically receives the first broadcast by the base station in a broadcast or multicast manner on a fixed time domain and/or a frequency domain resource. And the downlink information sent by the terminal to the base station in a broadcast or multicast manner, the method further includes: the terminal first receiving the first downlink information indication, and indicating, according to the first downlink information, the receiving base station to send the broadcast or multicast The first downlink information, where the first downlink information indicates a resource used to indicate the sending status of the first downlink information and/or the sending of the first downlink information.

In step 702, the determining, by the terminal, the receiving state of the second downlink information corresponding to the first downlink information according to the receiving state of the first downlink information further includes: the terminal incorrectly receiving the first downlink information, and the terminal sends the HARQ-ACK response information. The terminal receives the second downlink information corresponding to the first downlink information; or the terminal determines, according to the receiving state of the first downlink information, the receiving state of the first downlink information and/or the second downlink information, that is, the terminal receives the error. The first downlink information, the HARQ-ACK response information corresponding to the first downlink information sent by the terminal is NACK/DTX, and the terminal receives the second downlink information of the first downlink information; the terminal correctly receives the first downlink information, and the terminal sends the The HARQ-ACK response information corresponding to the first downlink information is an ACK, and the terminal does not receive the second downlink information corresponding to the first downlink information.

The terminal obtains the transmission resource of the HARQ-ACK response information corresponding to the first downlink information according to at least one of the following manners: the high-level signaling, and the downlink control information corresponding to the first downlink information;

The second downlink information received by the terminal is a repeated transmission of the first downlink information.

The second downlink information received by the terminal and the first downlink information correspond to the same HARQ process;

The terminal receives the second downlink information indication before receiving the second downlink information, where the second downlink information indicates that the received downlink information is the second downlink information corresponding to the first downlink information.

Preferred embodiment four

On the base station side, it is assumed that the base station periodically transmits the first downlink information PDSCH1 on a fixed time domain and/or frequency domain resource to a group of terminals {terminal 0, terminal 1, ..., terminal M}, where {terminal 0, Terminals 1, ..., terminal M} are located in the same serving cell; the base station allocates transmission resources of HARQ-ACK response information corresponding to the first downlink information to {terminal 0, terminal 1, ..., terminal M} through higher layer signaling.

The base station detects the HARQ-ACK response information corresponding to the first downlink information PDSCH1 on the transmission resource of the HARQ-ACK response information corresponding to the terminal 0 and the terminal 1, and the base station sends the first downlink information PDSCH1 corresponding to the terminal 0 and the terminal 1 The second downlink information PDSCH2, where the DCI corresponding to the transmitted second downlink information PDSCH2 includes the second downlink information indication; the base station does not detect the transmission resource of the HARQ-ACK response information corresponding to the {terminal 2, . . . , terminal M} The base station does not send the second downlink information PDSCH2 corresponding to the first downlink information PDSCH1 to the terminal 2, ..., the terminal M}, to the HARQ-ACK response information corresponding to the first downlink information PDSCH1,

On the terminal side, {terminal 0, terminal 1, ..., terminal M} periodically receives the first downlink information PDSCH1 on a fixed time domain and/or frequency domain resource, where terminal 0 and terminal 1 do not correctly receive the first In the downlink information, the terminal 0 and the terminal 1 send the HARQ-ACK response information on the transmission resource of the corresponding HARQ-ACK response information, and the terminal 0 and the terminal 1 receive the DCI, where the second downlink information indication is included, and the terminal receives the first downlink. Second downlink information corresponding to the information;

Preferred embodiment five

The base station detects that the HARQ-ACK response information corresponding to the first downlink information PDSCH1 is NACK/DTX, and the base station sends the first downlink to the terminal 0 and the terminal 1 on the transmission resource of the HARQ-ACK response information corresponding to the terminal 0 and the terminal 1. The second downlink information PDSCH2 corresponding to the information PDSCH1, where the DCI corresponding to the transmitted second downlink information PDSCH2 includes the second downlink information indication; and the transmission resource of the HARQ-ACK response information corresponding to the base station at {terminal 2, . . . , terminal M} The eNB detects that the HARQ-ACK response information corresponding to the first downlink information PDSCH1 is ACK, and the base station does not send the second downlink information PDSCH2 corresponding to the first downlink information PDSCH1 for the terminal 2, ..., the terminal M};

On the terminal side, {terminal 0, terminal 1, ..., terminal M} periodically receives the first downlink information PDSCH1 on a fixed time domain and/or frequency domain resource, where terminal 0 and terminal 1 do not correctly receive the first The downlink information PDSCH1, the terminal 0 and the terminal 1 send the HARQ-ACK response information to the NACK/DTX on the transmission resource of the corresponding HARQ-ACK response information, and the terminal 0 and the terminal 1 receive the DCI including the second downlink information indication, and the terminal 0 and the terminal 1 receives the second downlink information PDSCH corresponding to the first downlink information PDSCH1; {terminal 2, ..., terminal M} correctly receives the first downlink information PDSCH1, {terminal 2, ..., terminal M} corresponds to The HARQ-ACK response information is transmitted on the transmission resource of the HARQ-ACK response information as an ACK.

Preferred embodiment six

On the base station side, it is assumed that the base station periodically transmits the first downlink information PDSCH1 on a fixed time domain and/or frequency domain resource to a group of terminals {terminal 0, terminal 1, ..., terminal M}, where {terminal 0, The terminal 1, ..., the terminal M} is located in the same serving cell; the base station allocates the first downlink information corresponding to at least the terminal control information corresponding to the first downlink information for terminal {, terminal 1, ..., terminal M} Transmission resource of HARQ-ACK response information

The transmission resource, where the base station allocates the HARQ-ACK response information corresponding to the first downlink information, by using the downlink control information corresponding to the first downlink information, for the terminal information, includes the first downlink information. And corresponding to the transmission resource pool of the HARQ-ACK response information in the corresponding DCI, the terminal obtains the corresponding transmission resource according to the corresponding indication information; or the downlink control information corresponding to the at least the first downlink information of the base station is {terminal 0, terminal 1 , the terminal M} allocates the transmission resource of the HARQ-ACK response information corresponding to the first downlink information, and includes the start position of the transmission resource indicating the HARQ-ACK response information in the DCI corresponding to the first downlink information, and the terminal according to the corresponding The indication information and the starting location information are corresponding to the transmission resource, wherein the indication information is a terminal ID;

The base station detects that the HARQ-ACK response information corresponding to the first downlink information PDSCH1 is NACK/DTX, and the base station sends the first downlink to the terminal 0 and the terminal 1 on the transmission resource of the HARQ-ACK response information corresponding to the terminal 0 and the terminal 1. The second downlink information PDSCH2 corresponding to the information PDSCH1, where the DCI corresponding to the transmitted second downlink information PDSCH2 includes the second downlink information indication; and the transmission resource of the HARQ-ACK response information corresponding to the base station at {terminal 2, . . . , terminal M} It is detected that the HARQ-ACK response information corresponding to the first downlink information PDSCH1 is ACK, and the base station is not {terminal 2, ..., The terminal M} sends the second downlink information PDSCH2 corresponding to the first downlink information PDSCH1;

On the terminal side, {terminal 0, terminal 1, ..., terminal M} periodically receives the first downlink information PDSCH1 on a fixed time domain and/or frequency domain resource, where terminal 0 and terminal 1 do not correctly receive the first downlink. The row information PDSCH1, the terminal 0 and the terminal 1 send the HARQ-ACK response information to the NACK/DTX on the transmission resource of the corresponding HARQ-ACK response information, and the terminal 0 and the terminal 1 receive the DCI including the second downlink information indication, and the terminal 0 And the terminal 1 receives the second downlink information PDSCH corresponding to the first downlink information PDSCH1; {terminal 2, . . . , terminal M} correctly receives the first downlink information PDSCH1, {terminal 2, . . . , terminal M} in the corresponding HARQ The HARQ-ACK response message is transmitted on the transmission resource of the ACK response information as an ACK.

Preferred embodiment seven

On the base station side, it is assumed that the base station sends a first downlink information indication to a group of terminals {terminal 0, terminal 1, ..., terminal M} through RRC information, where the first downlink information indication is used to indicate the first downlink information. The transmitting state transmits the used resource; the base station sends the first downlink information PDSCH1 on the indicated resource, where {terminal 0, terminal 1, ..., terminal M} are located at the same coverage level; the base station passes the high layer signaling to be {terminal 0 , the terminal 1, ..., the terminal M} allocates the transmission resource starting position of the HARQ-ACK response information corresponding to the first downlink information

The terminal according to the corresponding indication information and starting position

The information obtains a corresponding transmission resource, wherein the indication information is a terminal ID;

The base station detects that the HARQ-ACK response information corresponding to the first downlink information PDSCH1 is NACK/DTX, and the base station sends the first downlink to the terminal 0 and the terminal 1 on the transmission resource of the HARQ-ACK response information corresponding to the terminal 0 and the terminal 1. The second downlink information PDSCH2 corresponding to the information PDSCH1, wherein the HARQ process number in the DCI corresponding to the transmitted second downlink information PDSCH2 is the same as the HARQ process ID in the DCI corresponding to the first downlink information PDSCH1; the base station is at {terminal 2, ..., The HARQ-ACK response information corresponding to the first downlink information PDSCH1 is detected as an ACK on the transmission resource of the HARQ-ACK response information corresponding to the terminal M}, and the base station does not send the first downlink information for the {terminal 2, . . . , terminal M}. The second downlink information PDSCH2 corresponding to PDSCH1;

On the terminal side, {terminal 0, terminal 1, ..., terminal M} receives the first downlink information indication that the RRC information is transmitted, and the terminal receives the first downlink information PDSCH1 on the resource indicated by the first downlink information, where Terminal 0 and terminal 1 do not correctly receive the first downlink information PDSCH1, and terminal 0 and terminal 1 transmit the HARQ-ACK response information to NACK/DTX on the transmission resource of the corresponding HARQ-ACK response information, and terminal 0 and terminal 1 receive The DCI indicated by the second downlink information, the terminal 0 and the terminal 1 receive the second downlink information PDSCH corresponding to the first downlink information PDSCH1; the terminal 2, ..., the terminal M} correctly receives the first downlink information PDSCH1, {terminal 2, ..., the terminal M} transmits the HARQ-ACK response information to the ACK on the transmission resource of the corresponding HARQ-ACK response information.

Preferred embodiment eight

On the base station side, it is assumed that the base station sends a first downlink information indication to a group of terminals {terminal 0, terminal 1, ..., terminal M} through RRC information, where the first downlink information indication is used to indicate the first downlink information. The transmitting state transmits the used resource; the base station sends the first downlink information PDSCH1 on the indicated resource, where {terminal 0, terminal 1, ..., terminal M} are located at the same coverage level; the base station passes the high layer signaling to be {terminal 0 , terminal 1, ..., terminal M} allocates transmission resources of HARQ-ACK response information corresponding to the first downlink information

The base station detects the HARQ-ACK response information corresponding to the first downlink information PDSCH1 on the transmission resource of the HARQ-ACK response information corresponding to the terminal 0 and the terminal 1, and the base station sends the first downlink information PDSCH1 corresponding to the terminal 0 and the terminal 1 The second downlink information PDSCH2, wherein the HARQ process number in the DCI corresponding to the transmitted second downlink information PDSCH2 is the same as the HARQ process ID in the DCI corresponding to the first downlink information PDSCH1; the base station corresponds to {terminal 2, ..., terminal M} The HARQ-ACK response information corresponding to the first downlink information PDSCH1 is not detected on the transmission resource of the HARQ-ACK response information, and the base station does not transmit the second downlink information corresponding to the PDSCH1 for the terminal 2, ..., the terminal M} Downlink information PDSCH2;

Preferred embodiment nine

It is assumed that the base station sends a first downlink information indication to a group of terminals {terminal 0, terminal 1, ..., terminal M} through RRC information, where the first downlink information indication is used to indicate the transmission status of the first downlink information. The base station transmits the first downlink information PDSCH1 on the indicated resource, where {terminal 0, terminal 1, ..., terminal M} are located at the same coverage level; the base station passes the high layer signaling to be {terminal 0, terminal 1, ..., the terminal M} allocates the transmission resource of the HARQ-ACK response information corresponding to the first downlink information.

When the number of NACK/DTX received by the base station is greater than M, the base station transmits the first downlink information PDSCH1, or the base station receives the HARQ-ACK response information when the number of NACK/DTX is less than N. The base station sends the second downlink information to the terminal whose HARQ-ACK response message is NACK/DTX, where M, N is a positive integer greater than 0;

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

Optionally, the storage medium is further arranged to store program code for performing the method steps of the above-described embodiments:

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

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

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

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

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

Industrial applicability

The foregoing technical solution provided by the embodiment of the present invention may be applied to the process of transmitting downlink information, where the base station sends the first downlink information, and the base station requests the HARQ-ACK response message according to the hybrid automatic retransmission request corresponding to the received first downlink information. Determining a transmission status of the first downlink information and/or the second downlink information corresponding to the first downlink information, which solves the problem that the downlink information resource overhead of the MTC device is large.

Claims

A method for transmitting downlink information includes:

The base station sends the first downlink information;

Determining, by the base station, the first downlink information and/or the sending of the second downlink information corresponding to the first downlink information according to the hybrid automatic retransmission request HARQ-ACK response information corresponding to the received first downlink information. .
The method of claim 1, wherein the transmitting, by the base station, the first downlink information comprises:

The base station sends the first downlink information to a group of terminals in a broadcast or multicast manner.
The method of claim 2, wherein the transmitting, by the base station, the first downlink information to a group of terminals in a broadcast or multicast manner comprises:

The base station periodically sends the first downlink information to the group of terminals on a fixed time domain and/or a frequency domain resource.
The method of claim 2, wherein the transmitting, by the base station, the first downlink information to a group of terminals in a broadcast or multicast manner comprises:

The base station sends the first downlink information indication before sending the first downlink information, where the first downlink information indication is used to indicate a sending status and/or a sending station of the first downlink information. The resources used by the first downlink information.
The method according to claim 2, wherein the group of terminals comprises one of: terminals located in the same serving cell, terminals at the same coverage level, and receiving the indication of the first downlink information. terminal.
The method of claim 1 wherein the method further comprises:

The base station configures a transmission resource for the HARQ-ACK response information according to at least the high layer signaling and/or the downlink control information DCI corresponding to the first downlink information.
The method according to claim 1, wherein the base station determines, according to the HARQ-ACK response information corresponding to the received first downlink information, the first downlink information and/or the first downlink information corresponding to the first downlink information. The sending of the second downlink information includes:

The base station sends the second downlink information to a terminal that sends the HARQ-ACK response information.
The method according to claim 1, wherein the base station determines, according to the HARQ-ACK response information corresponding to the received first downlink information, the first downlink information and/or the first downlink information corresponding to the first downlink information. The sending of the second downlink information includes:

The base station sends the second downlink information to the terminal that the HARQ-ACK response information is non-acknowledgement/discontinuous transmission NACK/DTX.
The method according to claim 1, wherein the base station determines, according to the HARQ-ACK response information corresponding to the received first downlink information, the first downlink information and/or the first downlink information corresponding to the first downlink information. The sending of the second downlink information includes:

When the HARQ-ACK response information received by the base station is that the number/proportion of the NACK/DTX is greater than M, the base station sends the first downlink information, or the base station receives the HARQ-ACK response. Information is When the number/proportion of the NACK/DTX is less than N, the base station sends the second downlink information to the terminal whose HARQ-ACK response information is NACK/DTX; where M, N is a positive integer greater than 0.
The method of claim 1, wherein the second downlink information is a repeated transmission of the first downlink information.
The method according to claim 1, wherein the second downlink information and the first downlink information correspond to the same hybrid automatic repeat request HARQ process.
The method according to claim 1, wherein the base station determines the first downlink information and/or the first according to the hybrid automatic repeat request HARQ-ACK response information corresponding to the received first downlink information. The sending of the second downlink information corresponding to the downlink information includes:

And sending, by the base station, the second downlink information indication, where the second downlink information indication is used to indicate that the sent downlink information is corresponding to the first downlink information, The second downlink information.
A method for receiving downlink information includes:

Receiving, by the terminal, first downlink information sent by the base station;

Receiving, by the terminal, the second downlink information corresponding to the first downlink information according to the receiving state of the first downlink information.
The method according to claim 13, wherein the receiving, by the terminal, the first downlink information sent by the base station comprises:

The terminal receives the first downlink information that is sent by the base station in a broadcast or multicast manner.
The method of claim 14, wherein the receiving, by the terminal, the first downlink information that is sent by the base station in a broadcast or multicast manner comprises:

The terminal periodically receives the first downlink information on a fixed time domain and/or a frequency domain resource.
The method of claim 14, wherein the receiving, by the terminal, the first downlink information that is sent by the base station in a broadcast or multicast manner comprises:

Receiving, by the terminal, the first downlink information indication, and receiving, according to the first downlink information, the first downlink information, where the first downlink information indication is used to indicate the first downlink information The transmission status of the line information and/or the resource used to transmit the first downlink information.
The method according to claim 13, wherein the determining, by the terminal, the receiving of the second downlink information corresponding to the first downlink information according to the receiving state of the first downlink information comprises:

The terminal erroneously receives the first downlink information, the terminal sends a hybrid automatic repeat request response HARQ-ACK response information corresponding to the first lower information, and the terminal receives the first downlink information. Corresponding to the second downlink information.
The method according to claim 13, wherein the terminal determines and is based on the reception status of the first downlink information. The receiving the second downlink information corresponding to the first downlink information includes:

The terminal erroneously receives the first downlink information, and when the terminal sends the hybrid automatic repeat request response HARQ-ACK response information corresponding to the first lower information to be non-acknowledgement/discontinuous transmission NACK/DTX, The terminal receives the second downlink information corresponding to the first downlink information;

The terminal correctly receives the first downlink information, and when the HARQ-ACK response information corresponding to the first downlink information sent by the terminal is an acknowledgement ACK, the terminal does not receive the first downlink information. Corresponding to the second downlink information.
The method of claim 18, wherein the method further comprises:

The terminal obtains the transmission resource of the HARQ-ACK response information according to at least one of the following manners: through the high layer signaling, the downlink control information corresponding to the first downlink information.
The method of claim 13, wherein the second downlink information is a repeated transmission of the first downlink information.
The method according to claim 13, wherein the method further comprises: the second downlink information and the first downlink information correspond to the same hybrid automatic repeat request HARQ process.
The method according to claim 13, wherein the determining, by the terminal, the receiving of the second downlink information corresponding to the first downlink information according to the receiving state of the first downlink information comprises:

The receiving, by the terminal, the indication of the second downlink information, before receiving the second downlink information, where the downlink information received by the indication of the second downlink information is a location corresponding to the first downlink information. The second downlink information is described.
A device for transmitting downlink information, located in a base station, includes:

a sending module, configured to send the first downlink information to a group of terminals;

The first receiving module is configured to receive the hybrid automatic repeat request HARQ-ACK response information corresponding to the first downlink information, and determine the first downlink information and/or the second downlink information corresponding to the first downlink information. The status of the transmission.
A receiving device for downlink information, located in the terminal, includes:

The second receiving module is configured to receive the first downlink information sent by the base station;

The determining module is configured to determine, according to the receiving state of the first downlink information, a receiving state of the second downlink information corresponding to the first downlink information.