WO2015165090A1

WO2015165090A1 - Data transmission method and apparatus

Info

Publication number: WO2015165090A1
Application number: PCT/CN2014/076637
Authority: WO
Inventors: 张力学; 朱松
Original assignee: 华为技术有限公司
Priority date: 2014-04-30
Filing date: 2014-04-30
Publication date: 2015-11-05
Also published as: CN106464503B; CN106464503A

Abstract

The present invention provides a semi-persistent scheduling method for a fountain code. A data transmission method is provided. The reception condition is fed back after data packets are sent multiple times, so as to achieve the objective of saving feedback resources. A corresponding coding algorithm and a corresponding decoding algorithm are provided. Redundant data is constructed, and it is ensured, according to redundancy of the data, that a receiving end can still reconstruct a needed original data packet in a case in which a certain quantity of data packets are lost.

Description

Method and device for data transmission

The embodiments of the present invention relate to the field of communications technologies, and in particular, to a data transmission method and apparatus. BACKGROUND With the development of communication technologies, transmitting data information through a network has become an important way for people to exchange information, and the scale of data transmission is also increasing. In the application of large-scale data transmission or reliable broadcast/multicast services, there is usually a blocking problem of data transmission.

In the prior art, commonly used mobile communication networks, such as Long Term Evolution (LTE), Universal Mobi Te Telecommunications System (UMTS), and short-range wireless communication technology Wi_Fi, Bluetooth, usually by using the fountain code encoding method to solve the blocking problem in the above data transmission. In the fountain code encoding method, the original data is divided into several data packets at the transmitting end, and the data packet can be encoded to generate a new encoded packet, and the receiving end can recover by a decoding algorithm as long as a certain number of encoded packets are received. Raw data, this characteristic is determined by the redundancy of the new incoming coded packet. Even in the case of packet loss on the channel, the receiver can reconstruct the original data. In the prior art, each time a sender sends a message, the receiver needs to feed back a received message, which also brings great waste of resources. Summary of the invention

The embodiment of the invention provides a data transmission method, which feeds back the situation after the data packet is sent after multiple times, so as to save the feedback resource.

In a first aspect, a data transmission method is provided, including obtaining at least two first data packets, where the first data packet includes information that needs to be sent to a receiving end, where each first data packet has a first length; The number of data packets determines a number of transmissions, where the number of transmissions is a number of first data packets sent to the receiving end, the number of transmissions being greater than 2 and less than the number of the first data packets; And sending, by the sending end, the plurality of first data packets according to the sending quantity; receiving a feedback message sent by the receiving end, where the feedback message carries indication information for continuing to send a data packet; according to the indication of continuing to send the data packet Obtaining a remaining number of transmissions, where the remaining number of transmissions is a number of the first data packet that the transmitting end continues to send to the receiving end, where the remaining number of transmissions is a difference between the number of transmissions and the number of the first data packets received by the receiving end; Sending the remaining number of first data packets to the receiving end.

In a first possible implementation manner of the first aspect, the multiple first data packets are sent to the receiving end according to the sending quantity; and receiving the feedback message of the receiving end includes: acquiring a periodic sending quantity, each time the sending is performed After the first number of first data packets are periodically sent, the feedback message of the receiving end is received.

In a second possible implementation manner of the first aspect, before receiving the feedback message sent by the receiving end, the method further includes: sending a feedback control message to the receiving end, where the feedback control message is used to notify the receiving end to send The feedback message.

In a third possible implementation manner of the first aspect, the indication information of the continuation of transmitting the data packet includes the remaining transmission quantity; and/or: the indication information of the continuation of transmitting the data packet, where the receiving end correctly receives the a number of data packets; and/or the indication information of the continuation of transmitting the data packet, including the number of the first data packet that the receiving end fails to correctly receive; and/or: the indication information of the continuation of transmitting the data packet, including The receiving end correctly receives the ratio or ratio of the number of the first data packets to the number of the first data packets sent by the transmitting end.

In a fourth possible implementation manner of the first aspect, when the obtained remaining transmission quantity is zero, the sending of the first data packet is stopped.

In a fifth possible implementation manner of the first aspect, the obtaining the at least two first data packets includes: acquiring at least one original data packet, where the original data packet includes information that needs to be sent to the receiving end, determining a cut Length, according to the cutting length, cutting the original data packet into at least two second data packets, the dimension of the second data packet is the cutting length; acquiring a first codebook, from the first code The codebook vector having the same number as the second data packet is selected, the dimension of the codebook vector is equal to the dimension of the second data packet, and each second data packet is respectively multiplied by the corresponding codebook vector, Get the first packet. In a sixth possible implementation manner of the first aspect, determining a location identifier of the codebook vector corresponding to the first data packet in the first codebook, and sending a first data packet to the receiving end, sending The indication information of the location identifier corresponding to the first data packet.

In a seventh possible implementation manner of the first aspect, the sending the indication information of the location identifier corresponding to the first data packet includes: corresponding to the corresponding relationship between the location identifier and the system frame number, and the first data packet And determining, by the location identifier of the codebook vector in the first codebook, a system frame number, where the system frame number indicates a number of the sub-period in the second period, and the sub-period corresponding to the system frame number is used to send the a first data packet, where the system frame number is used as the indication information of the location identifier corresponding to the first data packet, where the at least two first data packets are transmitted in at least two first periods, The first period includes at least two second periods, the second period includes at least two sub-periods, and the number of the sub-cycles included in all the second periods is equal, and the time of each of the sub-cycles can be transmitted. One of the first data packets.

In an eighth possible implementation manner of the first aspect, the acquiring the first codebook includes: receiving the first codebook; or setting the first codebook according to the second data packet, and A codebook is sent to the receiving end.

In a ninth possible implementation manner of the first aspect, the correspondence between the location identifier and the system frame number is a relationship between the location identifier Coeff ic i ent and the system frame number SFN, and satisfies: Coeff ic ient = Funct ion (SFN, Previous Reference)

The Previous Reference is an integer, initially 0, automatically incremented by one every first cycle. The second aspect provides a data transmission method, where the number of transmissions is obtained, where the number of transmissions is that the sending end sends the first data packet to the receiving end, where the first sending quantity is greater than 2 and smaller than the first data packet. The first data packet is received, the first data packet includes information that needs to be sent to the receiving end, and each of the first data packets has a first length; according to the sending quantity and the first data packet that is correctly received. The quantity is determined by the feedback message, the feedback message carries the indication information that continues to send the first data packet; the feedback message is sent to the sending end, and the sending end is notified that the sending end continues to send the remaining quantity according to the indication information of the continuation of sending the data packet. First data packet, the remaining hair The number of transmissions is the difference between the number of transmissions and the number of first data packets received by the receiving end; and the first number of first data packets are received for the remaining transmission.

In a first possible implementation manner of the second aspect, the first data packet is received according to the sending quantity, and the feedback message is sent to a sending end, including acquiring a periodic receiving quantity, and sending the periodicity every time the receiving is received. After the first data packet is sent, the feedback message is sent to the sending end.

In a second possible implementation manner of the second aspect, before sending the feedback message to the sending end, the method further includes:

Receiving a feedback control message, and sending the feedback message according to the feedback control message. In a third possible implementation manner of the second aspect, the indication information of the continuation of transmitting the data packet includes the remaining transmission quantity; and/or the indication information of the continuation of the transmission data packet, including the first received by the receiving end correctly The number of data packets; and/or the indication information of the continuation of transmitting the data packet, including the number of the first data packet that the receiving end fails to correctly receive; and/or the indication information of the continuation of transmitting the data packet, including the The receiving end correctly receives the ratio or ratio of the number of the first data packet to the number of the first data packet sent by the transmitting end.

In a fourth possible implementation manner of the second aspect, the feedback message carries the indication information that continues to send the data packet, and includes: when it is determined that the sending end does not need to continue to send the first data packet, the feedback remaining sending quantity is zero.

In a fifth possible implementation manner of the second aspect, the method includes: acquiring a first codebook, where the first codebook includes multiple codebook vectors, and is configured to perform a decoding operation on the first data packet; Receiving a first data packet, the location identifier indication information corresponding to the first data packet, where the location identifier indication information is used to determine a location of the codebook vector corresponding to the first data packet in the first codebook Identifying, according to the location identifier, obtaining a codebook vector corresponding to the first data packet from the first codebook; acquiring at least two second data packets according to the received first data packet and the corresponding codebook vector The dimension of the second data packet is the cut length; combining the second data packet into an original data packet, where the original data packet includes information that needs to be sent to the receiving end.

In a sixth possible implementation manner of the second aspect, the location identifier corresponding to the first data packet is received The indication information includes: a location identifier indication information corresponding to the first data packet is a correspondence between a location identifier and a system frame number, and a location of a codebook vector corresponding to the first data packet in the first codebook The system frame number indicates a number of the sub-period in the second period, the sub-period corresponding to the system frame number is used to send the first data packet, and the system frame number is used as the first data The indication information of the location identifier corresponding to the packet, where the at least two first data packets are transmitted in at least two first periods, the first period includes at least two second periods, and the second period includes At least two sub-cycles, and the number of the sub-cycles included in all the second periods are equal, and one of the first data packets may be transmitted in the time of each of the sub-cycles.

In a seventh possible implementation manner of the second aspect, the acquiring the first codebook includes: receiving and acquiring the first codebook; or determining, according to a predefined manner, the first codebook, where the first code is The present invention is sent to the transmitting end, so that the transmitting end encodes the original data packet according to the first codebook.

In an eighth possible implementation manner of the second aspect, the correspondence between the location identifier and the system frame number is a relationship between the location identifier Coeff ic i ent and the system frame number SFN, and satisfies: Coeff ic ient = Funct ion (SFN, Previous Reference)

The Previous Reference is an integer, initially 0, automatically incremented by one every first cycle. In a third aspect, a data transmission apparatus is provided, including a first acquiring unit, configured to obtain at least two first data packets, where the first data packet includes information that needs to be sent to a receiving end, where each first data packet Having a first length;

a first determining unit, configured to determine, according to the quantity of the first data packet, the number of transmissions, where the number of transmissions is the number of sending the first data packet to the receiving end, where the number of transmissions is greater than 2 and smaller than the first data packet quantity;

a first sending unit, configured to send the multiple first data packets to the receiving end according to the sending quantity;

a first receiving unit, configured to receive a feedback message sent by the receiving end, where the feedback message carries indication information that continues to send a data packet;

a signal processing unit, configured to obtain, according to the indication information that the data packet is continuously sent, obtain the remaining hair The number of the sending, the remaining number of sending is the number of the first data packet that the sending end continues to send to the receiving end, where the remaining sending quantity is the difference between the sending quantity and the quantity of the first data packet received by the receiving end; The sending unit is further configured to send the remaining number of first data packets to the receiving end. In a first possible implementation manner of the third aspect, the first acquiring unit is further configured to acquire a periodic transmission quantity, and receive the feedback of the receiving end after sending the first data packet by sending the periodicity Message.

In a second possible implementation manner of the third aspect, the first sending unit is further configured to send a feedback control message to the receiving end, where the feedback control message is used to notify the receiving end to send the feedback message. .

In a third possible implementation manner of the third aspect, the indication information of the continuation of transmitting the data packet includes the remaining transmission quantity; and/or the indication information of the continuation of transmitting the data packet, including the first received by the receiving end correctly The number of data packets; and/or the indication information of the continuation of transmitting the data packet, including the number of the first data packet that the receiving end fails to correctly receive; and/or the indication information of the continuation of transmitting the data packet, including the The receiving end correctly receives the ratio or ratio of the number of the first data packet to the number of the first data packet sent by the transmitting end.

In a fourth possible implementation manner of the third aspect, the first sending unit is further configured to: stop sending the first data packet when the obtained remaining transmission quantity is zero.

In a fifth possible implementation manner of the third aspect, the first acquiring unit includes: a second acquiring unit, configured to acquire at least one original data packet, where the original data packet includes information that needs to be sent to the receiving end;

a second determining unit, determining a cutting length, cutting the original data packet into at least two second data packets according to the cutting length, wherein a dimension of the second data packet is the cutting length; and a third acquiring unit , for obtaining the first codebook;

a selecting unit, configured to select, from the first codebook, a codebook vector having the same number as the second data packet, where a dimension of the codebook vector is equal to a dimension of the second data packet,

a multiplier, configured to multiply each second data packet by a corresponding codebook vector to obtain a first data pack.

In a sixth possible implementation manner of the third aspect, the fourth acquiring unit is configured to determine a location identifier of the codebook vector corresponding to the first data packet in the first codebook.

The first sending unit is further configured to: when the first data packet is sent to the receiving end, send the indication information of the location identifier corresponding to the first data packet.

In a seventh possible implementation manner of the third aspect, the method includes: a fifth acquiring unit, configured to determine a location identifier of a codebook vector corresponding to the first data packet in the first codebook;

a third determining unit, configured to determine a system frame number according to a correspondence between the location identifier and the system frame number and a location identifier of the codebook vector corresponding to the first data packet in the first codebook, where the system frame number indication a number of the sub-period in the second period, where the sub-period corresponding to the system frame number is used to send the first data packet, where the at least two first data packets are transmitted in at least two first periods, The first period includes at least two second periods, the second period includes at least two sub-cycles, and the number of the sub-cycles included in all the second periods is equal, and the time of each of the sub-cycles One of the first data packets can be transmitted.

In an eighth possible implementation manner of the third aspect, the third acquiring unit, further includes: a second receiving unit, configured to receive the first codebook; or

a setting unit, configured to set the first codebook according to the second data packet; and a second sending unit, configured to send the first codebook to the receiving end.

In a ninth possible implementation manner of the third aspect, the correspondence between the location identifier Coeff icient and the system frame number SFN is:

Coeff ic ient = funct ion (SFN, Previous Reference)

The Previous Reference is an integer, initially 0, automatically incremented by one every first cycle. In a fourth aspect, a data transmission apparatus is provided, including a first acquiring unit, configured to acquire a number of transmissions, where the number of transmissions is a number of the first data packet sent by the sending end to the receiving end, where the first sending quantity is greater than 2 Less than the number of the first data packet;

a first receiving unit, configured to receive the first data packet, where the first data packet includes a need to send Information sent to the receiving end, each of the first data packets having a first length;

a first determining unit, configured to determine, according to the quantity of the transmission and the quantity of the first data packet that is correctly received, the feedback message carries indication information that continues to send the first data packet;

a first sending unit, configured to send the feedback message to the sending end, and notify the sending end to continue to send the remaining quantity of the first data packet according to the indication information of the continuation of sending the data packet, where the remaining sending quantity is the sending quantity a difference from the number of the first data packets received by the receiving end;

The first receiving unit is further configured to receive the remaining number of first data packets.

In a first possible implementation manner of the fourth aspect, the first sending unit sends a feedback message to the sending end after receiving the first number of first data packets in the periodicity.

In a second possible implementation manner of the fourth aspect, the first receiving unit is further configured to receive a feedback control message, where the second sending unit sends the feedback message according to the feedback control message.

In a third possible implementation manner of the fourth aspect, the indication information for continuing to send the data packet includes the remaining transmission quantity; and/or:

And the indication information for continuing to send the data packet, including the quantity of the first data packet correctly received by the receiving end; and/or

The indication information for continuing to send the data packet includes: the receiving end fails to correctly receive the number of the first data packet; and/or:

The indication information for continuing to send the data packet includes a ratio or ratio of the number of the first data packet correctly received by the receiving end to the number of the first data packet sent by the transmitting end.

In a fourth possible implementation manner of the fourth aspect, the first determining unit is further configured to: when it is determined that the sending end does not need to continue to send the first data packet, the feedback remaining sending quantity is zero.

In a fifth possible implementation manner of the fourth aspect, the third acquiring unit is configured to obtain a first codebook, where the first codebook includes multiple codebook vectors, and is used to decode the first data packet. Operation

The first receiving unit is configured to receive a first data packet sent by the sending end, and further receive the first a location identifier indicating information corresponding to the data packet, where the location identifier indicating information is used to determine a location identifier of the codebook vector corresponding to the first data packet in the first codebook;

The third obtaining unit is further configured to obtain, from the first codebook, a codebook vector corresponding to the first data packet according to the location identifier;

a decoding unit, configured to acquire at least two second data packets according to the received first data packet and the corresponding codebook vector, where a dimension of the second data packet is the cut length;

And a combining unit, configured to combine the second data packet into an original data packet, where the original data packet includes information that needs to be sent to the receiving end.

In a sixth possible implementation manner of the fourth aspect, the location identifier indication information corresponding to the first data packet is a system frame number that sends the first data packet, and the system frame number indication sub-cycle is in a second a number in the period, the sub-period corresponding to the system frame number is used to send the first data packet, where the at least two first data packets are transmitted in at least two first periods, the first period Included in the at least two second periods, the second period includes at least two sub-cycles, and all the second periods include the number of the sub-cycles, and each of the sub-cycles may transmit one of the The first packet.

In a seventh possible implementation manner of the fourth aspect, the fourth acquiring unit is configured to obtain the first codebook; or:

a second determining unit, configured to determine the first codebook in a predefined manner; a third sending unit, configured to send the first codebook to a sending end, so that the sending end is configured according to the first codebook Encode the original packet.

In an eighth possible implementation manner of the fourth aspect, the mapping between the location identifier Coeff icient and the system frame number SFN is:

Coeff ic ient = funct ion (SFN, Previous Reference)

The Previous Reference is an integer, initially 0, automatically incremented by one every first cycle. Through the above scheme, due to the technology of redundant coding such as fountain, the original data packet can be encoded into a redundant data packet, which reduces the resources required for feedback and avoids the retransmission machine after packet loss. Drawing instructions

1 is a schematic flowchart of an embodiment of a method for transmitting data by a transmitting end according to the present invention; FIG. 2 is a schematic flowchart of a method for encoding data at a transmitting end according to the present invention; FIG. 4 is a schematic flowchart of an embodiment of a method for receiving data at a receiving end according to the present invention; FIG. 5 is a schematic flowchart of an embodiment of a method for decoding data at a receiving end according to the present invention; A schematic structural diagram of an embodiment of a transmitting apparatus provided by the present invention;

FIG. 7 is a schematic structural diagram of an embodiment of a first acquiring unit of a transmitting apparatus according to the present invention; FIG.

FIG. 8 is a schematic structural diagram of an embodiment of a third acquiring unit of a transmitting apparatus according to the present invention; FIG.

FIG. 9 is a schematic structural diagram of an embodiment of a first transmitting unit of a transmitting apparatus according to the present invention; FIG.

FIG. 10 is a schematic structural diagram of an embodiment of a receiving apparatus according to the present invention; FIG.

Figure 11 is a schematic structural view of an embodiment of a third obtaining unit of the receiving device provided by the present invention;

FIG. 12 is a schematic diagram of a transceiving message system according to the present invention.

Figure 13 is a schematic diagram of a messaging device of the present invention.

detailed description

Embodiments of the present invention further provide an apparatus embodiment for implementing the steps and methods in the foregoing method embodiments.

It should be noted that the present invention relates to a method and an apparatus for transmitting and receiving data, which does not have

10

Correction page (Article 91) ISA/CN The transmitting device and the receiving device may be any communication device end, or may include a transmitting or receiving device in the same communication device. In the apparatus according to the embodiment of the present invention, integration of the respective transceivers according to functions or other aspects is not limited.

1 shows an embodiment of a method of transmitting data according to the present invention.

Step 101: Obtain at least two first data packets, where the first data packet includes information that needs to be sent to a receiving end, where each first data packet has a first length;

FIG. 2 shows an embodiment of step 101 of the present invention. In step 101, at least two first data packets are obtained, and the at least two first data packets may be acquired according to the following steps:

1011: Obtain at least one original data packet, where the original data packet includes information that needs to be sent to the receiving end, determine a cutting length, and cut the original data packet into at least two second data packets according to the cutting length. The dimension of the second data packet is the length of the cut;

Before the data transmission, determining at least two of the original data packets that need to be transmitted to the receiving end, and integrating at least two of the original data packets in a certain order. Alternatively, the data packets may be directly arranged and cut in sequence. For at least two second data packets of equal dimensions, the second data packets are combined into a first transmission vector in a certain order and encoded. It should be understood that when there is a portion of the data packet having a dimension less than the length of the cut after cutting, as an embodiment of the present invention, zero padding may be made at the end.

The manner of cutting the original data packet into the at least two second data packets may be determined through negotiation, or received a message indicating that the original data packet is cut into at least two data packets. This will not be repeated here.

1012: Obtain a first codebook, and obtain, from the first codebook, a codebook vector having the same number as a second data packet, where a dimension of the codebook vector is equal to a dimension of the second data packet, and each The second data packet is respectively multiplied by the corresponding codebook vector to obtain a first data packet.

It should be understood that the present invention does not limit the method of obtaining the first codebook, and may be preset in the system, or selected from a plurality of codebooks. In one embodiment, the first codebook is set according to the second data packet, and the first codebook is sent to the receiving end. In another embodiment, the obtaining of the first codebook is performed by the receiving end, or is generated according to the channel characteristics, the length characteristics of the original data packet, and the encoding manner, and details are not described herein. Optionally, after determining the first codebook, sending the first codebook to the receiving end, or sending a method for generating a codebook to the receiving end, so that the receiving end may obtain according to a generating method. The first codebook or directly receives the generated first codebook.

In still another embodiment of the present invention, the first codebook may be obtained by receiving, optionally, may be obtained from a device that generates a codebook, or determined by a receiving end.

The present invention does not limit the specific method of multiplying each second data packet by the corresponding codebook vector to obtain the first data packet. As an embodiment, the selected codebook vector may be formed into the first transmission matrix. The number of columns of a transmission matrix is the same as the first transmission vector composed of the second data packet, that is, each row vector is one of the codebook vectors. For convenience of description, the first transmission matrix is represented as A, and the first transmission vector is represented as X, and the second transmission vector y=Ax calculated by the coding matrix. y consists of all first packets. As an embodiment of the present invention, the number of columns of A, that is, the number of first codebook vectors is greater than the number of the second data packets, and the coding mode is a fountain code coding mode, that is, a coded method. In the first data packet, the dimension of each first data packet is added to obtain a dimension greater than a dimension of the first transmission vector. The redundancy of all the first data packets as a whole is guaranteed, and the condition that the number of the first codebook vectors is larger than the number of the second data packets can be applied to all the present inventions. When packet loss occurs during transmission, determining, according to the second feedback information, continuing to transmit the number of the first data packet, and transmitting the redundant first data packet, as long as the first data packet is correctly transmitted. If the number is greater than the minimum number of the first data packets of the reconstructed signal, the signal may be reconstructed according to the received first data packet. It should be understood that the present invention does not limit that a row of the first transmission matrix represents a codebook vector, or a column, or by other logical coding schemes.

Step 102: Determine, according to the quantity of the first data packet, the number of transmissions, where the number of transmissions is the number of sending the first data packet to the receiving end, where the number of transmissions is greater than 2 and smaller than the number of the first data packet. Step 103: Send the plurality of first data packets to the receiving end according to the number of transmissions. FIG. 3 illustrates an embodiment of the present invention, and corresponding to step 1011 and step 1012, step 103 is performed according to the sending. The number of sending the plurality of first data packets to the receiving end may be performed as follows:

Step 1031: Determine a location identifier of the codebook vector corresponding to the first data packet in the first codebook, to notify the receiving end to reconstruct the original data packet according to the location identifier decoding.

Step 1032: Determine a system frame number according to a correspondence between a location identifier and a system frame number, and a location identifier of the codebook vector corresponding to the first data packet in the first codebook, where the system frame number indicator The number of the period in the second period, the sub-period corresponding to the system frame number is used to send the first data packet, and the system frame number is used as the indication information of the location identifier corresponding to the first data packet; Transmitting the at least two first data packets in at least two first periods, where the first period includes at least two second periods, the second period includes at least two sub-cycles, and all second The number of the sub-cycles included in the period is equal, and one of the first data packets may be transmitted in the time of each of the sub-cycles.

Optionally, in step 1033, the first rule is obtained, where the first rule is: in the same first period, the i th sub-period in each second period may transmit one of the a data packet, and different values of the i in the same kth second period in different first periods, setting the i and k as system frame number parameters;

Step 1034: Send a first data packet to the receiving end, and send indication information of the location identifier corresponding to the first data packet.

Step 104: Receive a feedback message sent by the receiving end, where the feedback message carries indication information that continues to send the first data packet.

As an embodiment of the present invention, the feedback message may be, but is not limited to,:

The indication information for continuing to send the data packet, including the remaining number of transmissions; and/or:

The indication information for continuing to send the data packet includes the number of the first data packet correctly received by the receiving end, and the sending end determines, according to the quantity of the first data packet that is correctly received, that the transmission needs to be continued. The number of first packets; and/or

The indication information of the continuation of sending the data packet includes: the receiving end fails to correctly receive the quantity of the first data packet, and determines, according to the quantity of the first data packet that is not correctly received, determining the first data that needs to be continuously sent. The number of packages; and / or:

The indication information for continuing to send the data packet includes a ratio or a ratio of the number of the first data packet correctly received by the receiving end to the number of the first data packet sent by the transmitting end, and determining, according to the ratio or ratio, that the determining needs to continue The number of first packets sent.

It should be understood that the first data packet sent by the sending end to the receiving end may be notified by multiple forms, so that the sending end may determine, according to the feedback message, that the number of the first data packet needs to be continuously sent. The invention is not described herein again.

Step 105: Obtain a remaining number of transmissions according to the indication information of the continuation of sending the data packet, where the remaining number of transmissions is a quantity that the sending end continues to send the first data packet to the receiving end, where the remaining number of sending is the number of sending and receiving The difference between the number of the first data packets received by the terminal;

Step 106: Send, to the receiving end, the remaining number of first data packets to be sent.

It should be understood that there are many ways to send the first number of first data packets to the receiving end. As an embodiment of the present invention, the sending end acquires the number of periodic transmissions, and sends the first number of transmissions every time the transmission is completed. After the data packet, the feedback message of the receiving end is received. According to the feedback message, the first data packet is continuously sent. As a further embodiment of the present invention, after the specified first data packet is sent, a feedback control message is sent, where the feedback control message is used to instruct the receiving end to send the feedback message.

Optionally, when the obtained remaining transmission quantity is zero, the sending of the first data packet is stopped. Optionally, the step 107 is performed at any time, and the relationship between the system frame number parameter and the codebook vector index is obtained and sent, so that the receiving end can be based on the received i and k of the first data packet. The value determines the first data packet and the corresponding codebook vector.

Optionally, the correspondence between the location identifier and the system frame number is a relationship between the location identifier Coeff icient and the system frame number SFN, and satisfies: Coeff ic ient = funct ion (SFN, Previous Reference)

The Previous Reference is an integer, initially 0, automatically incremented by one every first cycle. The foregoing embodiment of the present invention determines a number of first data packets to be continuously transmitted by transmitting a plurality of first data packets, and receiving a feedback message sent by the receiving end according to multiple feedback manners; The original data packet can be encoded into a redundant data packet, which reduces the resources required for feedback and avoids the retransmission mechanism after packet loss.

Optionally, before step 101, you can execute:

Step 108: Send a first scheduling message, where the first scheduling message is used to indicate that a semi-static scheduling is started.

Step 109: Receive a first feedback message, where the first feedback message is used to confirm that the receiving end is ready to receive at least two first data packets.

As an embodiment of the present invention, the sending the first scheduling message and the receiving the first feedback message are a Hybrid Automatic Repeat Request (HARQ) process, where the first scheduling message is further used. Instructing the receiving end to send a response message; the first feedback message is further used to feed back a response message.

Figure 4 illustrates an embodiment of a method of receiving data in accordance with the present invention.

Step 201: Acquire a number of transmissions, where the number of transmissions is a quantity that the sending end needs to send the first data packet to the receiving end, where the first sending quantity is greater than 2 and smaller than the quantity of the first data packet; Step 202, Receiving, by the first data packet, the first data packet includes information that needs to be sent to a receiving end, where each first data packet has a first length;

FIG. 5 illustrates an embodiment of the present invention, and receiving the plurality of first data packets according to the number of transmissions may be performed as follows:

2021: Obtain a first codebook, where the first codebook includes multiple codebook vectors, and is used to perform decoding operations on the first data packet.

Optionally, obtaining the first codebook; or:

Optionally, determining the first codebook according to a predefined manner, and sending the first codebook to send And sending, so that the sending end encodes the original data packet according to the first codebook.

It should be understood that the present invention does not limit the method of obtaining the first codebook, and may be preset in the system, or selected from a plurality of codebooks. In one embodiment, the first codebook is set according to the second data packet, and the first codebook is sent to the receiving end.

In another embodiment, the obtaining of the first codebook is performed by the receiving end, or is generated according to a channel characteristic, a length characteristic of the original data packet, and an encoding manner, and details are not described herein. Optionally, after determining the first codebook, sending the first codebook to the receiving end, or sending a method for generating a codebook to the receiving end, so that the receiving end may obtain according to a generating method. The first codebook directly receives the generated first codebook.

2022, when receiving a first data packet sent by the sending end, receiving location identifier indication information corresponding to the first data packet, where the location identifier indication information is used to determine that the codebook vector corresponding to the first data packet is in the first a location identifier in a codebook, and obtaining, according to the location identifier, a codebook vector corresponding to the first data packet from the first codebook;

As an embodiment of the present invention, the location identifier indication information corresponding to the first data packet is a correspondence between a location identifier and a system frame number, and a codebook vector corresponding to the first data packet is in the first codebook. a location identifier, the system frame number indicating a number of the sub-period in the second period, the sub-period corresponding to the system frame number is used to send the first data packet, and the system frame number is used as the first The indication information of the location identifier corresponding to the data packet, where the at least two first data packets are transmitted in at least two first periods, the first period includes at least two second periods, and the second period The at least two sub-cycles are included, and the number of the sub-cycles included in all the second periods is equal, and one of the first data packets can be transmitted in each of the sub-cycles.

Optionally, in step 2023, the first rule is obtained, where the first rule is: in the same first period, the i-th sub-period in each second period may transmit one of the a data packet, and the values of the i in the same kth second period in different first periods are different, Setting the i and k as system frame number parameters;

Optionally, the correspondence between the location identifier and the system frame number is a relationship between the location identifier Coefficient and the system frame number SFN, and satisfies:

Coeff ic ient = funct ion (SFN, Previous Reference)

The Previous Reference is an integer, initially 0, automatically incremented by one every first cycle. Step 203: Determine, according to the quantity of the transmission and the quantity of the first data packet that is correctly received, the feedback message carries indication information that continues to send the first data packet, and sends the feedback message to the sending end to notify the The transmitting end continues to send the remaining number of first data packets according to the indication information of the continuation of sending the data packet, where the remaining number of transmissions is a difference between the number of transmissions and the number of the first data packets received by the receiving end;

The indication information of the continuation of sending the data packet includes the quantity of the first data packet correctly received by the receiving end, and the transmitting end determines the quantity of the first data packet that needs to be continuously sent according to the quantity of the first data packet that is correctly received; and / or

Step 204: Receive a remaining number of first data packets.

It should be understood that there are many ways to receive the remaining number of first data packets, as this According to an embodiment of the invention, the receiving end acquires the number of periodic transmissions, and sends a feedback message to the sending end after receiving the first number of first data packets in the periodicity. And continuing to receive the first data packet according to the feedback message. As a further embodiment of the present invention, a feedback control message is received, where the feedback control message is used to instruct the receiving end to send the feedback message.

Optionally, when it is determined that the sending end does not need to continue to send the first data packet, the feedback remaining sending quantity is zero.

Optionally, when the received data packet needs to be restored to the original data packet, performing step 205: acquiring at least two second data packets according to the received first data packet and the corresponding codebook vector, where The dimension of the second data packet is the length of the cut;

It should be understood that, according to the received first data packet and the corresponding codebook vector, there are many ways to obtain at least two second data packets, as one embodiment of the present invention, when the received second data packet When the number of the first data packet is less than or equal to the number of the first data packet, for example, if the dimension of the second transmission column vector composed of the first data packet is X; if the dimension of the first transmission column vector composed of the second data packet is y, and satisfying y=Ax, and y>x, wherein the codebook vector corresponding to each element of y is the row of the matrix A, according to the =, due to the redundancy of the information contained in the first data packet, The correct transmission of the first data packet is greater than the minimum number of the first data packet of the reconstructed signal, and the signal may be reconstructed according to the received first data packet. The X is solved, and the second data packet is determined according to the relationship of the second data packet in the X.

The second data packet is combined into an original data packet, the original data packet containing information that needs to be sent to the receiving end.

It should be understood that, due to the redundancy of the first data packet, when packet loss occurs during transmission, it is determined that the number of the first data packet is continuously transmitted, and the first data packet that is redundant is transmitted, as long as the correct transmission is performed. The number of the first data packet is greater than the minimum number of the first data packet of the reconstructed signal, so that the signal can be reconstructed according to the received first data packet. It should be understood that the present invention does not limit that a row of the first transmission matrix represents a codebook vector, or may be a column, or by other logical coding methods, or directly according to the first data packet and the corresponding codebook vector. Refactoring. The foregoing embodiment of the present invention determines the number of first data packets to be continuously transmitted by receiving a plurality of first data packets and transmitting feedback messages according to multiple feedback manners; and the original data may be used due to redundant coding techniques such as fountains. The packet is encoded as a redundant packet, which reduces the resources required for feedback and avoids the retransmission mechanism after packet loss.

Optionally, before step 201, you can execute:

Step 206: Receive a first scheduling message, where the first scheduling message is used to indicate that a semi-static scheduling is initiated.

Step 207: Send a first feedback message, where the first feedback message is used to confirm that the receiving end is ready to receive at least two first data packets.

As an embodiment of the present invention, the receiving the first scheduling message and the sending the first feedback message are a Hybrid Automatic Repeat Request (HARQ) process, where the first scheduling message is further used. Instructing the receiving end to send a response message; the first feedback message is further used to feed back a response message.

Fig. 6 shows an embodiment of an apparatus for transmitting data of the present invention.

The first obtaining unit 301 is configured to obtain at least two first data packets, where the first data packet includes information that needs to be sent to the receiving end, where each first data packet has a first length;

FIG. 7 shows an embodiment of the present invention. The first obtaining unit 301 further includes: a second obtaining unit 301, configured to acquire at least one original data packet, where the original data packet includes information that needs to be sent to the receiving end. ;

The second determining unit 3012 determines a cutting length, according to the cutting length, cutting the original data packet into at least two second data packets, and the dimension of the second data packet is the cutting length;

Specifically, before the data transmission, the second determining unit first determines at least two original data packets that need to be transmitted to the receiving end, and integrates at least two of the original data packets in a certain order, optionally, The data packets are directly arranged in sequence, and are cut into at least two second data packets of equal dimensions, and the second data packets are combined into a first transmission vector in a certain order to be encoded. Reasonable Solving, when there is a portion of the data packet having a dimension less than the cutting length after cutting, as an embodiment of the present invention, zero may be added at the end, and the step may be, but is not limited to, being performed in the second determining unit, or Implemented by other external entities.

The manner of cutting the original data packet into at least two data packets may be determined through negotiation, or received a message indicating that the original data packet is cut into at least two data packets. Let me repeat.

The third obtaining unit 3013 is configured to acquire the first codebook. It should be understood that the present invention does not limit the method for acquiring the first codebook, and the third acquiring unit may acquire the preset first code in the memory of the system. This is selected from a plurality of codebooks stored in the memory. In an embodiment shown in FIG. 8, the third obtaining unit includes a setting unit 30131, configured to set the first codebook according to the second data packet, where the third acquiring unit further includes a second sending unit 30132, where The first codebook is sent to the receiver. In another embodiment, the third acquiring unit 3013 obtains the first codebook according to the negotiation with the receiving end, or according to the channel characteristics, the length characteristics of the original data packet, and the encoding manner. Generated, will not repeat them here. Optionally, after determining the first codebook, sending the first codebook to the receiving end, or sending a method for generating a codebook to the receiving end, so that the receiving end may obtain according to a generating method. The first codebook directly receives the generated first codebook.

In still another embodiment of the present invention, the first codebook may be received by the second receiving unit 30133, optionally, may be obtained from a device that generates the codebook, or determined by the receiving end.

The selecting unit 3014 is configured to select, from the first codebook, a codebook vector having the same number as the second data packet, where the dimension of the codebook vector is equal to the dimension of the second data packet.

The multiplier 3015 is configured to multiply each second data packet by a corresponding codebook vector to obtain a first data packet.

The invention does not limit the multiplication of each second data packet with the corresponding codebook vector. A specific method for obtaining the first data packet, as an embodiment, the selected codebook vector may be first a transmission matrix, the number of columns of the first transmission matrix being the same as the first transmission vector composed of the second data packet, that is, each row vector is one of the codebook vectors. For convenience of description, the first transmission matrix is represented as A, and the first transmission vector is represented as X, and the second transmission vector y=Ax calculated by the coding matrix. y consists of all the elements of the first packet. As an embodiment of the present invention, the number of columns of A, that is, the number of first codebook vectors is greater than the number of the second data packets, and the coding mode is a fountain code coding mode, that is, a coded method. In the first data packet, the dimension of each first data packet is added to obtain a dimension greater than a dimension of the first transmission vector. The redundancy of all the first data packets as a whole is guaranteed, and the condition that the number of the first codebook vectors is larger than the number of the second data packets can be applied to all the present inventions. When packet loss occurs during transmission, determining, according to the second feedback information, determining to continue transmitting the number of the first data packet, and transmitting the redundant first data packet, as long as the first data packet is correctly transmitted. If the number is greater than the minimum number of the first data packets of the reconstructed signal, the signal may be reconstructed according to the received first data packet. It should be understood that the present invention does not limit that a row of the first transmission matrix represents a codebook vector, and may be a column, or by other logical coding methods.

The first determining unit 302 is configured to determine, according to the quantity of the first data packet, the number of the sending, where the sending quantity is the number of sending the first data packet to the receiving end, where the sending quantity is greater than 2 and smaller than the first data. The number of packages;

The first sending unit 303 is configured to send the multiple first data packets to the receiving end according to the sending quantity;

FIG. 9 shows an embodiment of a first transmitting unit 303 of the present invention, corresponding to a second obtaining unit 3011, a second determining unit 3012, a third obtaining unit 3013, a selecting unit 3014, a multiplier 3015, and a first transmitting unit 303. An embodiment of transmitting the plurality of first data packets to the receiving end according to the sending quantity includes:

a fourth obtaining unit 3031, configured to determine a location identifier of the codebook vector corresponding to the first data packet in the first codebook, and configured to notify the receiving end to reconstruct the original data packet according to the location identifier decoding . The fifth obtaining unit 3032 is configured to determine a location identifier of the codebook vector corresponding to the first data packet in the first codebook.

a third determining unit 3033, configured to determine, according to a correspondence between the location identifier and the system frame number, and a location identifier of the codebook vector corresponding to the first data packet in the first codebook, the system frame number, the system frame number And indicating a number of the sub-period in the second period, where the sub-period corresponding to the system frame number is used to send the first data packet, where the at least two first data packets are transmitted in at least two first periods The first period includes at least two second periods, the second period includes at least two sub-cycles, and the number of the sub-cycles included in all the second periods is equal, and the time of each of the sub-cycles One of the first data packets can be transmitted within.

Optionally, the third determining unit 3033 is further configured to obtain a first rule, where the first rule is: in the same first period, the i th sub-period in each second period may be transmitted. a first data packet, and different values of the i in the same kth second period in different first periods, setting the i and k as system frame number parameters;

The first sending unit 303 is further configured to: when the first data packet is sent to the receiving end, send the indication information of the location identifier corresponding to the first data packet.

The first receiving unit 304 is configured to receive a feedback message sent by the receiving end, where the feedback message carries indication information that continues to send the data packet;

The indication information of the continuation of sending the data packet, including the remaining number of transmissions; and/or: the indication information of the continuation of the transmission of the data packet, including the quantity of the first data packet correctly received by the receiving end, and the sending end correctly receiving according to the The number of first data packets, determining the number of first data packets that need to continue to be transmitted; and/or

And the indicating information for continuing to send the data packet, where the receiving end correctly receives the first data The ratio or ratio of the number of packets to the number of the first data packets sent by the transmitting end, and determining the number of the first data packets that need to be continuously transmitted according to the ratio or ratio.

The signal processing unit 305 is configured to obtain, according to the indication information of the continuation of sending the data packet, the remaining transmission quantity, where the remaining transmission quantity is the number of the first data packet that the transmitting end continues to send to the receiving end, where the remaining transmission quantity is sent. The quantity is different from the number of the first data packet received by the receiving end; the first sending unit 303 is further configured to send the remaining number of first data packets to the receiving end.

It should be understood that there are many ways to send the remaining number of first data packets to the receiving end. As an embodiment of the present invention, the first acquiring unit 301 is further configured to acquire a periodic transmission quantity, and each time the sending is performed, After the first number of first data packets are periodically sent, the feedback message of the receiving end is received. According to the feedback message, the first sending unit 303 continues to send the first data packet. As a further embodiment of the present invention, the first sending unit 303 may send a feedback control message after the specified first data packet is sent, where the feedback control message is used to instruct the receiving end to send the feedback message.

Optionally, when the obtained remaining transmission quantity is zero, the sending of the first data packet is stopped. Optionally, the first obtaining unit 301 acquires a relationship between the system frame number parameter and the codebook vector index, and the first sending unit 303 sends a relationship between the system frame number parameter and the codebook vector index, so as to The receiving end may determine the first data packet and the corresponding codebook vector according to the values of i and k where the received first data packet is located. The functions corresponding to the above two modules can be performed at any time.

Optionally, the correspondence between the location identifier and the system frame number is:

Coeff ic ient = funct ion (SFN, Previous Reference)

Optionally, before the first obtaining unit 301 obtains the at least two first data packets, the first sending unit 303 is further configured to send a first scheduling message, where the first scheduling message is used to indicate that the semi-static is started. Scheduling

The first receiving unit 304 is further configured to receive a first feedback message, where the first feedback message is used to confirm that the receiving end is ready to receive at least two first data packets;

Figure 10 illustrates an embodiment of a method of receiving data in accordance with the present invention.

The first obtaining unit 401 is configured to obtain a quantity that is sent by the sending end, where the sending end needs to send the first data packet to the receiving end, where the first sending quantity is greater than 2 and smaller than the quantity of the first data packet;

The first receiving unit 402 is configured to receive the first data packet, where the first data packet includes information that needs to be sent to the receiving end, where each first data packet has a first length;

As an embodiment of the present invention, the first receiving unit 402 may further include: a third obtaining unit 4021, configured to acquire a first codebook, where the first codebook includes multiple codebook vectors, and the codebook The vector is used to perform a decoding operation on the first data packet;

Figure 11 shows an embodiment of the present invention. The second determining unit 4021 is configured to determine the first codebook in a predefined manner, and the third sending unit 40212 is configured to use the first codebook. Sending to the sender, so that the sender encodes the original data packet according to the first codebook.

It should be understood that the present invention does not limit the method of acquiring the first codebook, and may be in the storage of the system. Preset in the device, or select from multiple codebooks contained in the memory. In an embodiment, the third obtaining unit 4021 is configured to set the first codebook according to the second data packet, and send the first codebook to the receiving end.

In another embodiment, the acquiring of the first codebook is performed by the fourth acquiring unit 40213 in agreement with the receiving end, or is generated according to a channel characteristic, a length characteristic of an original data packet, and an encoding manner, and is no longer used herein. Narration. Optionally, after determining the first codebook, sending the first codebook to the receiving end, or sending a method for generating a codebook to the receiving end, so that the receiving end may obtain according to a generating method. The first codebook directly receives the generated first codebook. It is to be understood that the invention is not to be construed as a

In still another embodiment of the present invention, the first codebook may be received by the first receiving unit 402, optionally, may be obtained from a device that generates a codebook, or determined by the receiving end.

The first receiving unit 402 is further configured to: when receiving a first data packet sent by the sending end, receive the location identifier indication information corresponding to the first data packet, where the location identifier indication information is used to determine that the first data packet corresponds to The location of the codebook vector in the first codebook,

The third obtaining unit 4021 is further configured to obtain, from the first codebook, a codebook vector corresponding to the first data packet according to the location identifier;

As an embodiment of the present invention, the first receiving unit 402 receives the location identifier indication information corresponding to the first data packet, where the location identifier indication information corresponding to the first data packet is a system for sending the first data packet. a frame number, where the system frame number indicates a number of the sub-period in the second period, and the sub-period corresponding to the system frame number is used to send the first data packet; wherein, the transmission is performed in at least two first periods The at least two first data packets, the first period includes at least two second periods, the second period includes at least two sub-cycles, and all the second periods include the number of the sub-cycles, One of the first data packets may be transmitted during the time of each of the sub-cycles.

Optionally, the first obtaining unit 401 is further configured to obtain a first rule, where the first rule is: During the first period, the ith of the sub-periods in each second period may transmit one of the first data packets, and in the same first period, the same kth second period The values of the i are different, and the i and k are set as system frame number parameters;

Optionally, the relationship between the location identifier Coeff ic ient and the system frame number SFN, and the two feet -

Coeff ic ient = funct ion (SFN, Previous Reference)

The Previous Reference is an integer, initially 0, automatically incremented by one every first cycle. The first determining unit 403 is configured to determine, according to the quantity of the transmission and the quantity of the first data packet that is correctly received, the feedback message carries the indication information that continues to send the first data packet, where the first sending unit 404 is configured to: Sending the feedback message to the sending end, and informing the sending end to continue to send the remaining number of first data packets according to the indication information of the continuation of sending the data packet, where the remaining sending quantity is the sending quantity and the receiving end receives the first The difference in the number of packets;

As an embodiment of the present invention, the first determining unit 403 is configured to determine, according to the number of transmissions and the number of correctly received first data packets, the feedback message may be: but not limited to:

It should be understood that the first data packet sent by the sending end to the receiving end may be notified in a plurality of forms, so that the transmitting end may determine, according to the feedback message, that the sending of the first The number of data packets is not described herein.

The first receiving unit 402 is further configured to receive the remaining number of first data packets.

It should be understood that there are many ways to receive the remaining number of first data packets. As an embodiment of the present invention, the first sending unit 404 receives the first number of first data packets after receiving the periodicity. Sending a feedback message to the sender. The first receiving unit 402 continues to receive the first data packet according to the feedback message. As a further embodiment of the present invention, before the first sending unit 404 sends a feedback message to the sending end, the first receiving unit 402 receives a feedback control message, where the feedback control message is used to indicate that the receiving end sends the The feedback message.

Optionally, the first determining unit 403 is further configured to determine that when the sending end does not need to send the first data packet, determine that the feedback remaining sending quantity is zero.

Optionally, when the received data packet needs to be restored to the original data packet, the decoding unit

405. The method is configured to obtain, according to the received first data packet and the corresponding codebook vector, at least two second data packets, where a dimension of the second data packet is the cut length.

The combining unit 406 is configured to combine the second data packet into an original data packet, where the original data packet includes information that needs to be sent to the receiving end.

It should be understood that, due to the redundancy of the first data packet, when packet loss occurs during transmission, it is determined that the number of the first data packet is continuously transmitted, and the first data packet that is redundant is transmitted, as long as the correct transmission is performed. The number of the first data packet is greater than the minimum number of the first data packet of the reconstructed signal, so that the signal can be reconstructed according to the received first data packet. It should be understood that the present invention does not limit that a row of the first transmission matrix represents a codebook vector, or may be a column, or by other logical coding methods, or directly according to the first data packet and the corresponding codebook vector. Refactoring.

The foregoing embodiment of the present invention determines the number of first data packets to be continuously transmitted by receiving a plurality of first data packets and transmitting feedback messages according to multiple feedback manners; and the original data may be used due to redundant coding techniques such as fountains. The packet is encoded as a redundant packet, which reduces the resources required for feedback and avoids the retransmission mechanism after packet loss.

Optionally, before the first obtaining unit 401 obtains the number of transmissions, the first receiving unit 402 is further configured to receive a first scheduling message, where the first scheduling message is used to indicate that a semi-persistent scheduling is initiated; The sending unit 404 is further configured to send a first feedback message, where the first feedback message is used to confirm that the receiving end is ready to receive at least two first data packets;

It should be noted that the present invention relates to a method and an apparatus for data transmission and reception, which are not specifically limited to a base station side or a terminal side. The sending device and the receiving device may be any communication device end, or may be in the same communication device. It also contains two types of transmitting or receiving devices. In the apparatus involved in the embodiments of the present invention, integration of the respective transceivers according to functions or other aspects is not limited. In the devices involved in the various embodiments of the present invention, the integration of the various transceiver devices according to functions or other aspects is not limited. For example, the apparatus shown in FIG. 6 and the apparatus shown in FIG. 10 may each exist in one apparatus as a whole, and the apparatus as a whole includes:

The first sending unit 303 is further configured to send a first scheduling message, where the first scheduling message is used to indicate that the semi-persistent scheduling is started;

The first receiving unit 304 is further configured to receive a first feedback message, where the first feedback message is used to confirm Recognizing that the receiving end is ready to receive at least two first data packets;

The method further includes: a first receiving unit 402, configured to receive a first scheduling message, where the first scheduling message is used to indicate that a semi-persistent scheduling is initiated;

The first sending unit 404 is further configured to send a first feedback message, where the first feedback message is used to confirm that the receiving end is ready to receive at least two first data packets, then,

The first sending unit 303, the first receiving unit 304, the first receiving unit 402, and the first sending unit 404 may be integrated into one semi-static scheduling control module, and are responsible for starting the semi-static scheduling for other devices, and receiving other A semi-static scheduling indication sent by the device.

It should be understood that the semi-persistent scheduling control module described in the above example is merely an example of the present invention, and that the present invention claims the separation and integration of logically compliant modules, as well as the logical splitting and integration of the various embodiments.

Below, an example of a specific embodiment in the implementation process of the present invention is listed:

Step 501: The sender acquires at least one original data packet, where the original data packet includes information that needs to be sent to the receiving end, combines at least one original data packet into one data packet, and divides the synthesized data packet into multiple second data. a packet, each second data packet has the same dimension; combining the plurality of second data packets into a first transmission vector;

In this embodiment, three original data packets are taken as an example: xl, x2, x3 o The three original data packets have different dimensions, and the x1, x2, and x3 are integrated into the data packet X and a cut is determined. The length b, the integrated X is cut into a plurality of the second data packets z _m having the dimension b, and the case where the data packet of the dimension b cannot be formed when the last element is cut, and zero is added at the end. The plurality of second data packets are combined into a first transmission vector Z.

Step 502: The sending end obtains a first transmission matrix, obtains at least two first data packets according to the first transmission matrix and the second data packet, and obtains a relationship between the first data packet and the corresponding codebook vector, where the receiving end is used. Decoding operation according to the system frame number parameter

The transmitting end and the receiving end acquire a first codebook, where the first codebook includes a codebook vector, obtains a first transmission matrix according to the first codebook, or directly acquires a first transmission matrix. As the hair In one embodiment, for the first transmission vector Z of length m, the obtained first transmission matrix A has the form:

Where A is a matrix of n rows and m columns. In this embodiment, m < n. Each line of A is one of the codebook vectors. Encoding according to the first transmission matrix and the second data packet z _m to obtain at least two first data packets, where the coding mode in the embodiment is the integration of the second data packet Multiplying the left side of a transmission vector Z by a first transmission matrix A yields n first data packets y _n , ie Y=AZ:

Since n>m, in the case of ensuring that the selection of the codebook is reasonable, „is a redundant message. Specifically, for the coding mode of the embodiment, each row vector corresponds to a first data packet, and when the receiving end fails When receiving a certain number of the first data packets correctly, due to the redundancy of the encoding in this embodiment, the receiving end can still decode the first transmission vector Z before encoding by some means. It should be understood that the first The transmission vector Z is composed of the second data packet, including all the information to be sent by the transmitting end to the receiving end. The value of nm is the value of the number of redundant codebook vectors, and the value of n is the number of codebook vectors used. In one embodiment, the value of n of the first transmission matrix is determined according to channel characteristic estimation, that is, how many codebook vectors are used to encode Z, which is determined according to channel quality or channel estimation provided by the channel, for example, m=100, if Estimating that the channel loses up to 10 first data packets in the process of transmitting 1 10 data packets, then selecting 1 110, encoding to obtain the number 110 of the first data packets, This ensures that the receiver can decode the original message based on the correctly received 100 packets. It should be understood that the present invention does not limit the method of determining the value of n. In addition, in the data transmission process, when it is determined that the n first data packets cannot satisfy the decoding of the receiving end, the first transmission matrix may be further expanded according to the codebook vector in the codebook, and the first data is further generated. package. Since each codebook vector in the encoding process and each of the obtained first data packets are in a corresponding relationship, it is necessary to record the correspondence between the codebook vector and the first data packet and to combine the codebook vector and the first data packet. The corresponding relationship is sent to the receiving end, so that the receiving end can decode according to the correspondence between the codebook vector and the first data packet. In an embodiment, the correspondence relationship is a correspondence between an index of a first data packet and a corresponding first codebook vector included in the transmission matrix, and an index of each codebook vector indicates a codebook vector. Optionally, if the index of the codebook vector is L, the indicated codebook vector is a codebook vector corresponding to the Lth row of the first transmission matrix. Optionally, the index information may be sent along with each of the first data packets. It should be understood that the present invention does not limit the manner of sending, as long as the receiving end can query the codebook vector corresponding to each first data packet. It is possible to perform a decoding operation for data reconstruction.

In another embodiment of the present invention, another method is provided for enabling a receiving end to query a codebook vector corresponding to each first data packet, so that the transmitting device can send the first data according to a first rule. And the first rule is: transmitting the at least two first data packets in at least two first periods, where the first period includes at least two second periods The second period includes at least two sub-cycles, and the number of the sub-cycles included in all the second periods is equal, and one of the first data packets may be transmitted in each of the sub-periods; In the first period, the first i-th sub-period in each second period may transmit one of the first data packets, and in the same kth second period in different first periods The value of the i is different, and the i and k are set as system frame number parameters. For example, in the third second period of the first first period, the first data is transmitted by using the fifth sub-period. Package, then, at all His first three second period the first period, you can not use the 5 th period of the first data packet transmission, so that, to ensure that the values of i and k determine one of said second unique data packet. Optionally, the first period may be an SFN period, and is composed of system frames, where the second period is the system frame included in an SFN period, and each system frame includes at least two subframes.

Optionally, the foregoing first rule may be that the sending end negotiates with the receiving end to obtain, or the other control device delivers; or when the rule determines the rule by one party, the other party is notified by sending a message or other manner. It should be understood that the present invention does not limit the manner in which the first rule is obtained.

The receiving end and the sending end acquire the relationship between the system frame number parameter and the codebook vector index, so that the receiving end may be in the second cycle according to the first cycle in which the received first data packet is located. The sub-period position determines the values of the i and k, and then queries the codebook vector corresponding to the first data packet according to the relationship between the values of i and k and the codebook vector index, and determines the code corresponding to the first data packet. The vector is such that the receiving end can acquire at least two of the second data packets according to all the received first data packet reconstructions, and reconstruct the original data packet.

It should be understood that, in the encoding process, the second data packet is formed by the original data packet. Preferably, the process of cutting the original data packet into the second data packet is an operation of a sorting order and is equal in length. The operation of the dimension block. Correspondingly, in the decoding process, the receiving end may reconstruct according to the corresponding codebook vector, and directly decode all the original data packets.

Step 503: The sending end sends a first scheduling message, where the first scheduling message is used to start a semi-persistent scheduling.

Step 504: The receiving end receives a first scheduling message.

Step 505: The receiving end determines, according to the first scheduling message, that it is ready to receive a semi-persistent scheduling, and sends a first feedback message, where the first feedback message is used to confirm that the receiving end is ready to receive at least two of the first data packets. The first data packet includes information that needs to be received from a transmitting end;

Step 506: The sending end receives a first feedback message, where the first feedback message is used to confirm that the receiving end is ready to receive at least two first data packets.

As an embodiment of the present invention, the sending the first scheduling message and the sending the first feedback message by the receiving end is a Hybrid Automatic Repeat Request (HARQ) process, where the first scheduling message is sent. Also used to instruct the receiving end to send a response message; The first feedback message is further used to feed back a response message.

Step 507: The sending end and the receiving end determine a first sending quantity, where the first sending quantity is used to determine the number of sending the first data packet, where the first sending quantity is at least two. Optionally, the sending end sends one first data packet in each of the second periods, and sends the first data packet according to the first sending quantity and the second period; The terminal determines a feedback message, and the feedback message is used to notify the sender of the number of first data packets that need to be sent. And transmitting the first data packet according to the feedback message.

The present invention implements a data transmission mode in which the receiving end sends a feedback message after the transmitting end continuously sends a plurality of the first data packets. Specifically, the present invention provides three specific embodiments:

In an embodiment of the present invention, the sending end periodically sends the first data packet, and the number of the first data packet sent by the period is the first sending quantity determined by the step 507. For example, if the determined first number of transmissions is 5, after receiving the first data packet, the receiving end determines the number and/or a requirement of the first data packet that is correctly received. And continuing to send the first number of data packets, and sending a second feedback message, where the second feedback message is used to notify the sending end of the number of data packets that need to be continuously sent, corresponding to the second period, in the present In an embodiment, one of the first data packets is sent in each of the second periods, and after each of the five second periods, the receiving end sends one of the second feedback messages. The sending end continues to send the first data packet according to the number of the first data packets that need to be continuously sent, and when the number of data packets that need to be continuously sent is smaller than the first sending quantity, After the sending end sends the first data packet that is not sent, the receiving end sends the second feedback message, if the second feedback message still needs to continue to send a certain number of the second feedback message, the sending end The sending of the first data packet continues until the number of data packets that are notified by the second feedback message that need to continue to be transmitted is zero.

In another embodiment of the present invention, the sending end sends the first data packet, and the determined first sending quantity is a quantity of the first data packet that needs to be sent to the receiving end, for example, the receiving The terminal needs to correctly receive 100 of the first data packets to correctly decode the original data packet, if according to the channel quality or channel estimation provided according to the channel in step 502: when the transmitting end sends 1 10 of the foregoing When a data packet is received, the receiving end may receive the 100 first data packets, and then send 110 first data packets, after the transmitting end sends the 10 10 first data packets, The receiving end determines the number of the first data packet correctly received and/or the number of the first data packet that needs to be continuously sent, and sends a second feedback message, where the transmitting end receives the second a feedback message, the second feedback message is used to notify the sender of the number of data packets that need to be continuously sent, and according to the number of data packets that need to be continuously sent, continue to send the first data packet and when the transmission is completed, Receiving the second feedback message, until the number of data packets that need to be sent by the second feedback message is zero. It should be understood that the present invention does not limit that the first number of transmissions is determined according to the channel quality or channel estimation provided according to the channel in step 502, and may be any number of transmissions, or a first number of transmissions determined according to other manners. .

In still another embodiment of the present invention, the feedback message is controlled by the sending end: the sending end sends a feedback control message, where the feedback control message is used to control the receiving end to send a third feedback message, where Determining, by the receiving end, the number of the first data packet correctly received and/or the number of the first data packet that needs to be continuously sent, and sending a third feedback message, where the third feedback message is used to notify the The number of data packets that the transmitting end needs to continue to send, and the receiving end receives the third feedback message. And transmitting the first data packet according to the third feedback message.

Step 508: Decode the at least two first data packets according to the first data packet, a relationship between the first data packet and a corresponding codebook vector, and the first transmission matrix. Two packets. Further restore to the original data packet.

Optionally, when the received first data packet is transmitted according to the first rule in step 502, according to the ith second period corresponding to each of the first data packets in the transmission process The kth sub-period, determining the values of the i and k, and querying the codebook vector relationship corresponding to the first data packet according to the relationship between the values of i and k and the codebook vector index, determining the first data a codebook vector corresponding to the packet, so that the receiving end can reconstruct according to all the received first data packet At least two of said second data packets. It should be understood that there are many types of decoding operations, which are not described in this embodiment.

This embodiment introduces a method and channel coding and decoding method suitable for transmitting and receiving data in the present invention. Encoding the original data packet that needs to be transmitted, so that after it has redundancy, it can ensure that the original data packet can be reconstructed if the receiving end fails to correctly receive the first data packet that is less than a certain threshold. data pack. The present invention saves the channel resources occupied by the problem that each transmitted data packet needs to be fed back. Correspondingly, this embodiment provides three different semi-static scheduling feedback modes. This embodiment further describes a method for transmitting a first data packet, which is obtained according to a time value of a second period of the second period in which the first data packet is located in one period and a time value of the sub-period k of the second period. The index of the codebook vector corresponding to the first data packet further obtains the codebook vector corresponding to the first data packet. The receiving end reconstructs the data according to the relationship between the first data packet and the corresponding codebook vector, and the first data packet and the corresponding codebook vector. The embodiment of the present invention provides a semi-persistent scheduling. The method solves the problem that the feedback is checked after receiving each data packet, and the channel resource is saved.

FIG. 12 shows still another embodiment of the present invention, which acquires three original data packets, and the three original data packets need to be sent to the receiving end. According to the present invention, each method relates to the first data packet obtained by encoding the original data packet. The integration obtains three sets of first data packet groups, each set of first data packet groups corresponding to the three original data packets, and only one first data packet of each group is scheduled at a time, and in this case, three times each time When the first data packet is used, the three first data packets of the scheduling are independent of each other. Therefore, in this case, the impact on each coding group is small, and the correlation of data packets in the same coding group is reduced.

Fig. 13 shows a general computer system configuration of the above apparatus.

The computer system may in particular be a processor based computer such as a general purpose personal computer (PC), a portable device such as a tablet computer, or a smart phone.

More specifically, the above computer system may include a bus, a processor 1301, an input device 1302, an output device 1303, a communication interface 1304, and a memory 1305. The processor 1301, the input device 1302 The output device 1303, the communication interface 1304, and the memory 1305 are connected to each other through a bus. Wherein: The bus can include a path for communicating information between various components of the computer system.

The processor 1301 may be a general-purpose processor, such as a general-purpose central processing unit (CPU), a network processor (NP Processor, NP for short), a microprocessor, or the like, or may be an application-specific integrated circuit (appl icat ion-spec if ic integrated) c ircuit , ASIC ) , or ^ 1 or more integrated circuits for controlling the execution of the program of the present invention. It can also be a digital signal processor (DSP), an application specific integrated circuit (AS IC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component.

A program for executing the technical solution of the present invention is stored in the memory 1305, and an operating system and other applications can also be stored. In particular, the program can include program code, the program code including computer operating instructions. More specifically, the memory 1805 can be a read-only memory (ROM), other types of static storage devices that can store static information and instructions, random access memory (RAM), storable information, and Other types of dynamic storage devices, disk storage, and so on.

Input device 1302 can include means for receiving data and information input by a user, such as a keyboard, mouse, camera, scanner, light pen, voice input device, touch screen, and the like.

Output device 1303 can include devices that allow output of information to the user, such as a display screen, printer, speaker, and the like.

Communication interface 1304 may include the use of devices such as any transceiver to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), and the like.

The processor 1301 executes the program stored in the memory 1305 for implementing the method for providing local routing in any of the embodiments of the present invention and any of the devices in this embodiment.

Through the description of the above embodiments, it will be apparent to those skilled in the art that the present invention can be implemented in hardware, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes computer storage media and Communication medium, wherein the communication medium includes any medium that facilitates the transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a computer. By way of example and not limitation, the computer readable medium can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used to carry or store an instruction or data structure. The desired program code and any other medium that can be accessed by the computer. This evening. Any connection may suitably be a computer readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwaves are included in the fixing of the associated media. As used in the present invention, a disc (Di sk ) and a disc (CD) include a compact disc (CD), a laser disc, a disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically replicated, and The disc uses a laser to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media. In summary, the above description is only a preferred embodiment of the technical solution of the present invention, and is not intended to limit the scope of 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.

Claims

Rights request

1. A method of sending data, characterized by:

Obtain at least two first data packets, the first data packets contain information that needs to be sent to the receiving end, and each of the first data packets has a first length;

The sending quantity is determined according to the number of first data packets, the sending quantity is the number of first data packets sent to the receiving end, and the sending quantity is greater than 2 and less than the number of first data packets; according to the sending Amount of sending the plurality of first data packets to the receiving end;

Receive a feedback message sent by the receiving end, where the feedback message carries instruction information to continue sending data packets;

According to the instruction information for continuing to send data packets, the remaining sending quantity is obtained. The remaining sending quantity is the number of the first data packets that the sending end continues to send to the receiving end. The remaining sending quantity is the number of the sending number and the number of the first data packets received by the receiving end. The difference in the number of data packets;

Send the remaining number of first data packets to the receiving end.

2. The method according to claim 1, characterized in that: sending the plurality of first data packets to the receiving end according to the sending quantity; receiving the feedback message from the receiving end includes:

Obtain the number of periodic transmissions, and receive the feedback message from the receiving end after each periodic transmission number of first data packets is sent.

3. The method according to any one of claims 1-2, characterized in that, before receiving the feedback message sent by the receiving end, it also includes:

Send a feedback control message to the receiving end, where the feedback control message is used to notify the receiving end to send the feedback message.

4. The method according to any one of claims 2-3, characterized in that the instruction information for continuing to send data packets includes the remaining number to send; and/or:

The instruction information for continuing to send data packets includes the number of first data packets correctly received by the receiving end; and/or

The instruction information for continuing to send the data packet includes the failure of the receiving end to correctly receive the first data packet. The number of packets; and/or:

The instruction information for continuing to send data packets includes the ratio or ratio of the number of first data packets correctly received by the receiving end and the number of first data packets sent by the sending end.

5. The method according to claims 2-4, characterized in that: sending the remaining number of first data packets to the receiving end includes:

When the remaining sending quantity is zero, stop sending the first data packet.

6. The method according to any one of claims 1-5, characterized in that said obtaining at least two first data packets includes:

Obtain at least one original data packet, the original data packet contains information that needs to be sent to the receiving end, determine a cutting length, and cut the original data packet into at least two second data packets according to the cutting length, the first The dimension of the second data packet is the cutting length;

Obtain the first codebook, select a codebook vector with the same number as the second data packets from the first codebook, the dimension of the codebook vector is equal to the dimension of the second data packet, and convert each second data packet The data packets are multiplied by the corresponding codebook vectors to obtain the first data packet.

7. The method of claim 6, further comprising:

Determine the position identifier of the codebook vector corresponding to the first data packet in the first codebook; When sending a first data packet to the receiving end, send indication information of the position identifier corresponding to the first data packet.

8. The method according to claim 7, characterized in that sending the indication information of the location identifier corresponding to the first data packet includes:

The system frame number is determined according to the corresponding relationship between the position identifier and the system frame number and the position identifier of the codebook vector corresponding to the first data packet in the first codebook, and the system frame number indicates that the sub-period is in the second The number in the cycle, the sub-period corresponding to the system frame number is used to send the first data packet, and the system frame number is used as the indication information of the location identifier corresponding to the first data packet; wherein, at least The at least two first data packets are transmitted within two first periods, the first period includes at least two second periods, the second period includes at least two sub-periods, and all second period packets The number of sub-periods included is equal, and one first data packet can be transmitted within each sub-period.

9. The method according to any one of claims 6-8, characterized in that said obtaining the first codebook includes:

receive said first codebook; or

The first codebook is set according to the second data packet, and the first codebook is sent to the receiving end.

10. The method according to any one of claims 6-9, characterized in that, the corresponding relationship between the location identifier and the system frame number is the relationship between the location identifier Coefficient and the system frame number SFN, and satisfies :

Coeff ic ient = funct ion (SFN, Previous Reference)

Previous Reference is an integer, initially 0, and automatically increases by one after each first cycle.

11. A method of receiving data, characterized by:

Obtain the sending quantity, the sending quantity is the number of first data packets sent by the sending end to the receiving end, and the first sending quantity is greater than 2 and less than the number of the first data packets;

Receive the first data packet, the first data packet contains information that needs to be sent to the receiving end, and each of the first data packets has a first length;

Determine a feedback message based on the sent number and the number of correctly received first data packets, where the feedback message carries instruction information to continue sending the first data packet; send the feedback message to the sending end, notifying the sending end according to the Describe the instruction information to continue sending data packets, and continue to send the remaining number of first data packets, where the remaining number to send is the difference between the number of sent and the number of first data packets received by the receiving end;

Receive the remaining number of first data packets sent.

12. The method according to claim 11, characterized in that: receiving the first data packet according to the sending quantity; sending the feedback message to the sending end, including:

Obtain the number of periodic receptions, and send a feedback message to the sending end each time after receiving the periodic number of first data packets.

13. The method according to any one of claims 11-12, characterized in that, before sending the feedback message to the sending end, it also includes:

Receive a feedback control message, and send the feedback message according to the feedback control message.

14. The method according to any one of claims 11-13, characterized in that the instruction information for continuing to send data packets includes the remaining number to send; and/or:

The instruction information for continuing to send data packets includes the number of times the receiving end failed to correctly receive the first data packet; and/or:

15. The method according to any one of claims 12-14, characterized in that the feedback message carries instruction information to continue sending data packets, including:

When it is determined that the sending end does not need to continue sending the first data packet, the remaining sending quantity is fed back as .

16. The method according to claims 11-15, characterized in that, further comprising:

Obtain a first codebook, the first codebook includes multiple codebook vectors, used to decode the first data packet;

When receiving a first data packet sent by the sending end, receiving the location identification indication information corresponding to the first data packet, the location identification indication information is used to determine whether the codebook vector corresponding to the first data packet is in the first code The position identifier in the book, and obtaining the codebook vector corresponding to the first data packet from the first codebook according to the position identifier;

According to the received first data packet and the corresponding codebook vector, obtain at least two second data packets, where the dimension of the second data packet is the cutting length;

The second data packet is combined into an original data packet, and the original data packet contains information that needs to be sent to the receiving end.

17. The method according to any one of claims 1 to 16, characterized in that receiving the location identification indication information corresponding to the first data packet includes:

The location identification indication information corresponding to the first data packet is the corresponding relationship between the location identification and the system frame number and the location identification of the codebook vector corresponding to the first data packet in the first codebook, and the system frame The number indicates the number of the sub-period in the second period. The sub-period corresponding to the system frame number is used to send the first data packet, and the system frame number is used as the location identifier corresponding to the first data packet. Indication information; wherein, the at least two first data packets are transmitted within at least two first cycles, the first cycle includes at least two second cycles, the second cycle includes at least two sub-cycles, and The number of sub-periods included in all second periods is equal, and one first data packet can be transmitted within each sub-period.

18. The method according to any one of claims 15 to 17, characterized in that said obtaining the first codebook includes: receiving and obtaining the first codebook; or:

The first codebook is determined in a predefined manner, and the first codebook is sent to the sending end, so that the sending end encodes the original data packet according to the first codebook.

19. The method according to claim 18, characterized in that the corresponding relationship between the location identifier and the system frame number is the relationship between the location identifier Coefficient and the system frame number SFN, and satisfies:

Coeff ic ient = funct ion (SFN, Previous Reference)

20. A device for sending data, characterized by: a first acquisition unit, used to obtain at least two first data packets, the first data packets containing information that needs to be sent to the receiving end, each of the first data The package has a first length;

A first determination unit, configured to determine the sending quantity according to the number of first data packets. The sending quantity is the number of first data packets sent to the receiving end. The sending quantity is greater than 2 and less than the first data packet. The quantity; A first sending unit, configured to send the plurality of first data packets to the receiving end according to the sending quantity; The first receiving unit is configured to receive a feedback message sent by the receiving end, where the feedback message carries instruction information to continue sending data packets;

The signal processing unit is configured to obtain the remaining sending quantity according to the instruction information of continuing to send data packets. The remaining sending quantity is the number of the first data packets that the sending end continues to send to the receiving end. The remaining sending quantity is the sending quantity. The difference from the number of first data packets received by the receiving end; The first sending unit is also used to send the remaining number of first data packets to the receiving end.

21. The device according to claim 20, characterized in that, the first acquisition unit is also used to obtain the number of periodic transmissions, and receive feedback from the receiving end after each periodic transmission number of first data packets is sent. information.

22. The device according to any one of claims 20-21, characterized in that the first sending unit is also used to send a feedback control message to the receiving end, and the feedback control message is used to notify the receiving end Send said feedback message.

23. The device according to any one of claims 20-22, characterized in that:

The instruction information for continuing to send data packets includes the number of remaining transmissions; and/or: the instruction information for continuing to send data packets includes the number of first data packets correctly received by the receiving end; and/or

24. The device according to any one of claims 20-23, characterized in that the first sending unit is also used for:

25. The device according to any one of claims 20-24, characterized in that the first acquisition unit includes:

The second acquisition unit is used to acquire at least one original data packet, where the original data packet contains the required Information to be sent to the receiving end;

The second determination unit determines a cutting length, and cuts the original data packet into at least two second data packets according to the cutting length, and the dimension of the second data packet is the cutting length; the third acquisition unit , used to obtain the first codebook;

A selection unit configured to select a codebook vector with the same number as the second data packet from the first codebook, where the dimension of the codebook vector is equal to the dimension of the second data packet,

A multiplier is used to multiply each second data packet by the corresponding codebook vector to obtain the first data packet.

26. The device according to claim 25, further comprising:

The fourth acquisition unit is used to determine the position identifier of the codebook vector corresponding to the first data packet in the first codebook;

The first sending unit is also configured to send indication information of the location identifier corresponding to the first data packet when sending a first data packet to the receiving end.

27. The device according to claim 25, further comprising:

The fifth acquisition unit is used to determine the position identifier of the codebook vector corresponding to the first data packet in the first codebook;

The third determination unit is configured to determine the system frame number according to the corresponding relationship between the position identifier and the system frame number and the position identifier of the codebook vector corresponding to the first data packet in the first codebook, where the system frame number indicates The number of the sub-cycle in the second cycle, the sub-cycle corresponding to the system frame number is used to send the first data packet; wherein, the at least two first data packets are transmitted in at least two first cycles, The first period includes at least two second periods, the second period includes at least two sub-periods, and the number of sub-periods included in all second periods is equal, and the time of each sub-period is One of said first data packets can be transmitted.

28. The method according to any one of claims 26-27, characterized in that the third acquisition unit further includes:

A second receiving unit, configured to receive the first codebook; or A setting unit, configured to set the first codebook according to the second data packet; a second sending unit, configured to send the first codebook to the receiving end.

29. The method according to claims 27-28, characterized in that the corresponding relationship between the location identifier Coefficient and the system frame number SFN is:

Coeff ic ient = funct ion (SFN, Previous Reference)

30. A device for receiving data, characterized by:

The first acquisition unit is used to obtain the number of sending, the number of sending is the number of first data packets sent by the sending end to the receiving end, and the first number of sending is greater than 2 and less than the number of the first data packets;

A first receiving unit, configured to receive the first data packet, where the first data packet contains information that needs to be sent to the receiving end, and each of the first data packets has a first length;

A first determining unit configured to determine a feedback message based on the number of sent and the number of correctly received first data packets, where the feedback message carries instruction information to continue sending the first data packet;

The first sending unit is configured to send the feedback message to the sending end, and notify the sending end to continue sending the remaining number of first data packets according to the instruction information to continue sending data packets, and the remaining sending number is the sending number. The difference from the number of first data packets received by the receiving end;

The first receiving unit is also configured to receive the remaining number of first data packets to be sent.

31. The device according to claim 30, wherein the first sending unit sends a feedback message to the sending end after receiving a number of first data packets sent periodically.

32. The device according to claim 30, wherein the first receiving unit is further configured to receive a feedback control message, and the second sending unit sends the feedback message according to the feedback control message.

33. The device according to any one of claims 31-33, characterized in that the instruction information for continuing to send data packets includes the remaining number to send; and/or:

The instruction information for continuing to send the data packet includes the information of the first data packet correctly received by the receiving end. Quantity; and/or

34. The device according to any one of claims 31 to 33, characterized in that, the first determining unit is further configured to: when it is determined that the sending end does not need to continue sending the first data packet, feedback the remaining number of sending is zero.

35. The device according to any one of claims 30-34, characterized in that, further comprising:

The third acquisition unit is used to acquire the first codebook, the first codebook includes a plurality of codebook vectors, and is used to decode the first data packet;

When the first receiving unit is used to receive a first data packet sent by the sending end, it also receives location identification indication information corresponding to the first data packet. The location identification indication information is used to determine the location identification information corresponding to the first data packet. The position identification of the codebook vector in the first codebook;

The third acquisition unit is also configured to obtain the codebook vector corresponding to the first data packet from the first codebook according to the location identifier;

A decoding unit, configured to obtain at least two second data packets based on the received first data packet and the corresponding codebook vector, where the dimension of the second data packet is the cutting length;

A combining unit, configured to combine the second data packet into an original data packet, where the original data packet contains information that needs to be sent to the receiving end.

36. The device according to claim 35, characterized in that, the location identification indication information corresponding to the first data packet is the system frame number for sending the first data packet, and the system frame number indication sub-period is in the second The number in the cycle, the sub-cycle corresponding to the system frame number is used to send the first data packet; wherein, the at least two first data packets are transmitted in at least two first cycles, the first cycle Contains at least two second periods, the second period includes at least two sub-periods, and the number of sub-periods included in all second periods is equal, and one can be transmitted within each of the sub-periods. the first data packet.

37. The device according to any one of claims 34-36, characterized in that the third acquisition includes:

The fourth acquisition unit is used to acquire the first codebook; or:

The second determination unit is used to determine the first codebook in a predefined manner; the third sending unit is used to send the first codebook to the sending end, so that the sending end can determine the first codebook according to the first codebook. Encode the original packet.

38. The device according to claim 37, characterized in that the corresponding relationship between the location identifier Coefficient and the system frame number SFN is:

Coeff ic ient = funct ion (SFN, Previous Reference)