CN112399530A

CN112399530A - Data transmission method, device, related equipment and storage medium

Info

Publication number: CN112399530A
Application number: CN201910759466.2A
Authority: CN
Inventors: 孙军帅; 黄学艳; 韩星宇; 刘玉真
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2021-02-23

Abstract

The invention discloses a data transmission method, a data transmission device, sending end equipment, receiving end equipment and a storage medium. The method comprises the following steps: the sending end equipment copies the data packets to be sent to obtain N data packets; n is greater than or equal to 2; the N data packets are all identical to the data packet to be sent; transmitting each data packet of the N data packets on a corresponding resource; and respectively allocating resources to each data packet in the N data packets.

Description

Data transmission method, device, related equipment and storage medium

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a data transmission method, apparatus, related device, and storage medium.

Background

In order to improve the transmission rate, a technical scheme for simultaneously transmitting data on a plurality of links is proposed. Specifically, Carrier Aggregation (CA) and Dual Connectivity (DC) or Multiple Connectivity (MC) technologies from the multi-Carrier High Speed Downlink Packet Access (HSDPA) of the third generation mobile communication technology (3G) era to the fourth generation mobile communication technology (4G) and the fifth generation mobile communication technology (5G) are all technologies that provide simultaneous data transmission on Multiple links for one User Equipment (UE).

However, data transmission is performed on a plurality of links, and for a terminal, the terminal needs to have certain transceiving capacity, so that the manufacturing cost of the terminal is greatly increased; at the same time, the power consumption of the terminal is also greatly increased.

Disclosure of Invention

In order to solve the related technical problems, embodiments of the present invention provide a data transmission method, an apparatus, related devices, and a storage medium.

The embodiment of the invention provides a data transmission method, which is applied to sending end equipment and comprises the following steps:

copying a data packet to be sent to obtain N data packets; n is greater than or equal to 2; the N data packets are all identical to the data packet to be sent;

transmitting each data packet of the N data packets on a corresponding resource; and respectively allocating resources to each data packet in the N data packets.

In the foregoing scheme, the copying the data packet to be sent includes:

and copying a data packet to be transmitted at a Media Access Control (MAC) layer of the sending end device or a Physical (PHY) layer of the sending end device.

In the above scheme, the corresponding Resource used for transmitting each data packet is at least one Physical Resource Block (PRB) or at least one Resource Element (RE).

In the above scheme, the method further comprises:

and receiving feedback information of the receiving end equipment aiming at the N data packets.

In the above scheme, the receiving feedback information of the receiving end device for N data packets includes:

receiving correctly received feedback information fed back by the receiving end equipment aiming at least one data packet in the N data packets; the feedback information sent by the receiving end equipment is sent by the receiving end equipment after one data packet in the N data packets is correctly received.

receiving feedback information of reception failure fed back by the receiving end equipment aiming at least one data packet in the N data packets; the feedback information sent by the receiving end equipment is sent by the receiving end equipment after the N data packets are all received unsuccessfully.

In the above scheme, the sending end device is a network device; the method further comprises the following steps:

judging whether the data packet to be sent needs to be subjected to multi-path copy transmission or not to obtain a judgment result;

when the judgment result represents that the data packet to be sent needs to be subjected to multi-path copy transmission, resources are distributed for the N data packets;

sending a scheduling result indication to the receiving end equipment based on the resources distributed for the N data packets; the receiving terminal equipment is a terminal.

In the foregoing solution, the sending the scheduling result indication to the receiving end device includes:

and transmitting a scheduling result indication to the receiving end equipment through Downlink Control Information (DCI) or a media access control element (MAC CE).

In the above scheme, the sending end device is a terminal; the method further comprises the following steps:

receiving a scheduling result indication sent by network equipment; the scheduling result indication is generated based on resources allocated for the N data packets.

In the foregoing solution, the receiving the scheduling result indication sent by the network device includes:

and receiving a scheduling result indication transmitted by the network equipment through the DCI or the MAC CE.

The embodiment of the invention also provides a data transmission method, which is applied to receiving end equipment and comprises the following steps:

receiving a data packet sent by sending end equipment; wherein the content of the first and second substances,

the data packets sent by the sending end equipment are duplicated into N data packets; n is greater than or equal to 2; the N data packets are all the same as the data packet to be sent;

receiving on respective resources for the N data packets; and the resources corresponding to each data packet in the N data packets are respectively allocated.

In the above scheme, the data packet sent by the sending end device is copied at the MAC layer of the sending end device or the PHY layer of the sending end device.

In the above scheme, the corresponding resource used by the sending end device to send each data packet is at least one PRB or at least one RE.

In the above scheme, the method further comprises:

and sending feedback information aiming at the N data packets to the sending end equipment.

In the foregoing scheme, the sending feedback information for N data packets to the sending end device includes:

and after one data packet in the N data packets is correctly received, sending correctly received feedback information which is fed back aiming at least one data packet in the N data packets to the sending end equipment.

and sending feedback information of the reception failure fed back by aiming at least one data packet in the N data packets to the sending terminal equipment after the N data packets are all received in failure.

In the above scheme, the receiving end device is a network device; the method further comprises the following steps:

judging whether the data packet sent by the sending end equipment needs to be subjected to multi-path copy transmission or not to obtain a judgment result;

when the judgment result indicates that the data packets sent by the sending end equipment need to be subjected to multi-path copy transmission, resources are distributed for the N data packets;

sending a scheduling result indication to the sending end equipment based on the resources allocated to the N data packets; the sending terminal equipment is a terminal.

In the foregoing solution, the sending a scheduling result indication to the sending end device includes:

and sending a scheduling result indication to the sending end equipment through the DCI or the MAC CE.

In the above scheme, the receiving end device is a terminal; the method further comprises the following steps:

An embodiment of the present invention further provides a data transmission device, including:

the copying unit is used for copying the data packets to be sent to obtain N data packets; n is greater than or equal to 2; the N data packets are all identical to the data packet to be sent;

a first transmission unit, configured to send, on a corresponding resource, each of the N data packets; and respectively allocating resources to each data packet in the N data packets.

the second transmission unit is used for receiving the data packet sent by the sending end equipment; wherein the content of the first and second substances,

An embodiment of the present invention further provides a sending end device, including:

the first processor is used for copying the data packets to be sent to obtain N data packets; n is greater than or equal to 2; the N data packets are all identical to the data packet to be sent;

a first communication interface for transmitting on a respective resource for each of the N data packets; and respectively allocating resources to each data packet in the N data packets.

An embodiment of the present invention further provides a receiving end device, including: a second processor and a second communication interface; wherein the content of the first and second substances,

the second processor is configured to receive, through the second communication interface, a data packet sent by a sending end device; wherein the content of the first and second substances,

An embodiment of the present invention further provides a sending end device, including: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is configured to execute the steps of any method of the sending-end device when running the computer program.

An embodiment of the present invention further provides a receiving end device, including: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is configured to execute the steps of any method of the receiving end device when running the computer program.

An embodiment of the present invention further provides a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any method of the above sending-end device, or implements the steps of any method of the above sending-end device.

According to the data transmission method, the data transmission device, the related equipment and the storage medium provided by the embodiment of the invention, the sending end equipment copies the data packets to be sent to obtain N data packets; n is greater than or equal to; the N data packets are all identical to the data packet to be sent; sending each data packet of the N data packets on a corresponding resource; the resources are respectively allocated to each data packet in the N data packets, that is, the resources corresponding to each data packet in the N data packets are independently allocated, and the N data packets obtained by copying are all sent on the independent resources, so that the receiving end equipment is not required to have the multi-band transceiving capacity, and the manufacturing cost of the receiving end equipment is reduced; meanwhile, a plurality of data packets are not sent to the receiving end equipment on a plurality of links at the same time, so that the receiving end equipment does not need to keep synchronization on the plurality of links, and the power consumption of the receiving end equipment is reduced.

Drawings

FIG. 1 is a functional diagram of a PDCP congestion copy;

fig. 2 is a schematic flow chart of a data transmission method at a sending end device side according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of PRBs allocated for scheduling according to an embodiment of the present invention;

FIG. 4 is a flow chart of a data transmission method according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a data transmission device according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a sending-end device according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a receiving end device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

The base station adopts a common method that downlink data is sent to the terminal by multiple paths and is sent over the air interface. In addition, with the proposal of ultra-reliable and low-delay communication (URLLC) service in 5G, the method of "multiple copy (duplication)" is increasingly used, that is, the same data packet is transmitted on different links by using CA, DC/MC and other technologies, so as to obtain robustness gain of multilink parallel transmission. As shown in fig. 1, in Packet Data Convergence Protocol (PDCP) layer replication, a PDCP protocol entity links a plurality of RLC protocol entities, each responsible for data processing on one carrier, through a plurality of separate bearers. This method results in a set of independent RLC transceiving mechanism for each link, so that the PDCP layer and the RLC layer need to configure multiple link modes directly, which increases the complexity of the system. In addition, when the RLC protocol entity sends data to the MAC layer, the MAC layer does not know that the datagram is a packet that is multiplexed and copied by the PDCP protocol entity, and only schedules and sends the datagram according to a normal packet. Meanwhile, when data is sent to the terminal through a plurality of links, the terminal needs to keep uplink synchronization on each link, and needs to have multi-band transceiving capability, so that the power consumption and the manufacturing cost of the terminal are improved.

Based on this, in various embodiments of the present invention, one data packet is transmitted simultaneously on multiple time-frequency resources of multiple time-frequency positions (e.g., multiple time-frequency resources of one transmission opportunity (e.g., one timeslot, etc.)), thereby achieving transmission gain of multiple physical transmission channels.

An embodiment of the present invention provides a data transmission method, which is applied to a sending end device, and as shown in fig. 2, the method includes:

step 201: copying a data packet to be sent to obtain N data packets;

here, N is greater than or equal to 2; that is, N is an integer greater than or equal to 2; and the N data packets are all identical to the data packet to be sent.

In practical application, the sending end device may be a network device, and specifically may be a base station, such as a next generation node b (gnb); accordingly, the receiving end device that receives the N data packets is the terminal, and in this case, downlink data is transmitted. Of course, the sending end device may also be a terminal; accordingly, the receiving end device that receives the N packets is a network device, and in this case, uplink data is transmitted.

In the embodiment of the present invention, the operation of copying the data packet to be transmitted is performed at the MAC layer or the PHY layer of the transmitting end device, that is, the data packet to be transmitted is copied at the MAC layer or the PHY layer. Data of the MAC layer needs to be transmitted to a Physical (PHY) layer, and thus, the data packet to be transmitted may be referred to as a Transport Block (TB), which is relative to the Physical (PHY) layer. Specifically, for the MAC protocol entity, the MAC protocol entity performs transmission related processing on a received Service Data Unit (SDU) of the MAC layer to obtain a Protocol Data Unit (PDU) of the MAC layer, and for the PHY layer of the transmitting end device, the PHY protocol entity receives the PDU transmitted by the MAC protocol entity, which is referred to as TB, and before the PHY layer performs encoding, the TB may be referred to as a codeword (codeword).

In practical application, the number of data packets to be copied, that is, the value of N, may be determined according to the quality of service (QoS) requirement of the radio bearer corresponding to the data packets and/or the current channel quality of the terminal. For example, if the service has very high QoS requirement, for example, the reliability is not lower than 5 and 9 (99.999%), the multiplexing is started for 4 times (1/16); if the channel quality is not good, such as block error rate (BLER) above 10%, multiplexing may be initiated 8 times (1/256).

Step 202: for each of the N data packets, transmitting on a respective resource.

Wherein, resources are respectively allocated to each data packet in the N data packets; that is, the resources corresponding to each of the N packets are allocated separately, that is, the resources corresponding to each of the N packets are allocated independently.

That is, when allocating air interface resources, according to a plurality of separate data packets, allocating independent time-frequency domain resources to each data packet on one transmission opportunity (for example, one timeslot), where there is no overlap between resources corresponding to the data packets. Fig. 3 shows a diagram of allocated PRBs scheduled in one slot (slot). As can be seen from fig. 3, each data packet corresponds to one PRB. In practical applications, the PRBs for multiple copies may be allocated at multiple time-frequency-domain positions of the entire resource bandwidth.

In actual application, the resource of each data packet can be allocated according to needs. For example, the location for allocating each PRB may be selected according to the measured channel quality of the terminal in the entire system bandwidth. For example, the system bandwidth 100MHz is a large bandwidth, and the transmission and reception quality of the user at each RE is different, so a plurality of corresponding PRB blocks are allocated to the terminal according to the system measurement.

Based on this, the corresponding resource used for transmitting each data packet may be at least one PRB or at least one RE when actually applied.

Here, the PRB is from the perspective of PHY, and may be referred to as a Resource Block (RB) from the perspective of radio bearer.

In practical application, the sending end device sends each data packet on the allocated time-frequency resource according to the corresponding air interface timing sequence requirement, so for the PHY layer, the PHY protocol entity independently codes and modulates each data packet, and finally sends the data packet to the air interface after RE-Mapping (RE-Mapping).

In practical application, the receiving end device may perform receiving feedback for the N data packets.

Based on this, in an embodiment, the method may further include:

Here, in actual use, since a plurality of packets are transmitted, the receiving end device can stop receiving other packets as long as one packet is successfully received. In order to improve the robustness of feedback, the receiving end device may perform positive feedback on a plurality of data packets, that is, identify that a data packet is correctly received, or perform positive feedback on one data packet. Only all duplicate packets fail to be received, and negative feedback is applied to one or more packets.

Based on this, in an embodiment, correctly received feedback information fed back by the receiving end device for at least one data packet of the N data packets is received; the feedback information sent by the receiving end equipment is sent by the receiving end equipment after one data packet in the N data packets is correctly received.

In an embodiment, receiving feedback information of reception failure fed back by the receiving end device for at least one data packet of the N data packets; the feedback information sent by the receiving end equipment is sent by the receiving end equipment after the N data packets are all received unsuccessfully.

In practical application, the network device needs to determine the value of N, allocate resources to N packets, and indicate the allocated resources to the terminal.

Based on this, in an embodiment, when the sending end device is a network device, the method may further include:

Here, in actual application, the value of N is determined and resources are allocated to N packets in the MAC layer of the network device, and the allocated resources are indicated to the terminal; that is, at the MAC layer of the network device:

The scheduling result indicates DCI that may be carried through a Physical Downlink Control Channel (PDCCH) or may be carried through a MAC CE.

Based on this, in an embodiment, the scheduling result indication is transmitted to the receiving end device through DCI or MAC CE.

When the sending end device is a terminal, the terminal needs to receive a scheduling result indication sent by the network device. Of course, the scheduling result indication is generated based on the resources allocated for the N packets.

Here, in actual application, the scheduling result indication transmitted by the network device through DCI or MAC CE may be received. And when the DCI is actually applied, the DCI is carried in the PDCCH.

Correspondingly, an embodiment of the present invention provides a data transmission method, which is applied to a receiving end device, and includes:

receiving on respective resources for the N data packets; the resources corresponding to each of the N packets are allocated separately, that is, the resources corresponding to each of the N packets are allocated independently.

Based on this, in an embodiment, the method may further include:

In an embodiment, the sending feedback information for N data packets to the sending end device includes:

In an embodiment, the sending feedback information for N data packets to the sender device includes:

In an embodiment, when the receiving end device is a network device, the method may further include:

Here, the scheduling result indication may be transmitted to the transmitting-end device through DCI or MAC CE.

When the receiving end device is a terminal, the method may further include:

An embodiment of the present invention provides a data transmission method, as shown in fig. 4, the method includes:

step 401: the sending end equipment copies the data packets to be sent to obtain N data packets;

here, N is greater than or equal to 2; the N data packets are all identical to the data packet to be sent;

step 402: the sending end equipment sends each data packet of the N data packets on a corresponding resource;

and respectively allocating resources to each data packet in the N data packets.

Step 403: and the receiving end equipment receives the data packet sent by the sending end equipment.

Wherein for the N data packets, receiving on the respective resources; and the resources corresponding to each data packet in the N data packets are respectively allocated.

It should be noted that: the specific processing procedures of the sending end device and the receiving end device are described in detail above, and are not described in detail here.

In the data transmission method provided by the embodiment of the invention, the sending end device copies the data packets to be sent to obtain N data packets; n is greater than or equal to 2; the N data packets are all identical to the data packet to be sent; sending each data packet of the N data packets on a corresponding resource; the resources are respectively allocated to each data packet in the N data packets, that is, the resources corresponding to each data packet in the N data packets are independently allocated, and the N data packets obtained by copying are all sent on the independent resources, so that the receiving end equipment is not required to have the multi-band transceiving capacity, and the manufacturing cost of the receiving end equipment is reduced; meanwhile, a plurality of data packets are not sent to the receiving end equipment on a plurality of links at the same time, so that the receiving end equipment does not need to keep synchronization on the plurality of links, and the power consumption of the receiving end equipment is reduced.

The present invention will be described in further detail with reference to the following application examples.

In the embodiment of the application, the MAC layer of the base station determines and triggers the multiplexing transmission of the data packets, and the scheduler of the MAC layer selects different time-frequency domain resources and simultaneously transmits the same TB when scheduling. And different time frequency resources are used for data transmission aiming at uplink and downlink allocation.

In order to implement the scheme of the embodiment of the present invention, the MAC layer has a function of controlling the MAC PDU to perform multiplex copy (english expression) transmission, and mainly includes the following functions:

firstly, the method has the functions of judging whether the MAC PDU is subjected to multi-path copy transmission, triggering the multi-path copy transmission, distributing wireless resources aiming at the multi-path copy transmission and scheduling the MAC PDU aiming at the multi-path copy transmission;

next, the MAC layer has a Flow Control function. This function mainly achieves control of how much data is transmitted in each channel of the duplicate transmission.

Third, the MAC layer has a control function for the multiple access duplication transmission, and includes performing uplink Grant (Grant) or downlink resource allocation (Assignment) on DCI or MAC CE carried on a PDCCH, that is, performing resource allocation result indication (which may also be referred to as scheduling result indication).

Fourth, a hybrid automatic repeat request (HARQ) mechanism for the duplicate transmission needs to be added or modified, including data transmission and ACK/NACK feedback acceptance processing functions for HARQ entities for the duplicate transmission and processes of the HARQ entities.

In the MAC layer, a scheduler (disposed on a base station) allocates an independent time-frequency-domain air interface resource to each TB according to a plurality of individual TBs, where the TB needs to be copied and transmitted by a user.

When the scheduler performs resource allocation, it first determines whether the TB needs to be multiplexed and transmitted. And determining the number of TBs needing to be copied according to the QoS requirement of the radio bearer corresponding to the TBs and/or the current channel quality of the user, namely determining the value of N. If the service has very high QoS requirement, for example, the reliability is not lower than 5 and 9 (99.999%), the multiplexing is started for 4 times (1/16); if the channel quality of the user is not good, e.g. BLER higher than 10%, multiplexing may be initiated 8 times (1/256).

Secondly, the position of each PRB is selected and allocated according to the measured channel quality of the user in the whole system bandwidth. The system bandwidth of 100MHz is a large bandwidth, and the transceiving quality of the user at each RE is different, so a plurality of corresponding PRBs are allocated to the user according to the system measurement.

And after the resource allocation is finished, performing parameter scheduling indication, namely performing scheduling result indication. The scheduling result may indicate DCI carried by PDCCH, or may indicate that a new MAC CE is introduced.

Here, in actual application, one scheduling result indication may indicate only one allocated PRB, that is, indicate resources allocated by one TB, or may indicate a plurality of allocated PRBs, that is, indicate resources allocated by a plurality of TBs.

In practical applications, one MAC CE may indicate multiple PRBs, that is, one MAC CE indicates resources allocated by multiple TBs. If the PDCCH is used, one or more PDCCHs may be used to indicate allocated PRBs, i.e., one PDCCH may be used to indicate one TB allocated resource, and one PDCCH may be used to indicate multiple PRBs, i.e., one PDCCH may be used to indicate multiple TB allocated resources. In a common way, in order to reduce the time for blind detection of the UE, one PDCCH may be used to indicate all PRBs, i.e. resources allocated by all replicated TBs. Two-level PDCCHs may also be used to indicate the resources allocated to all replicated TBs, specifically, one PDCCH is used to indicate the number of PRBs, that is, the number of replicated TBs, and then a plurality of PDCCHs are used to indicate the resources allocated to the TBs, where each PDCCH indicates one or more PRBs, and then the terminal blindly detects a corresponding PDCCH (PDCCH carrying PRBs) according to the number of PRBs indicated by the first PDCCH when receiving the PDCCH.

For the sending terminal equipment, according to the instruction of the scheduler, respectively sending each multiplexed TB based on the allocated time-frequency resource and the corresponding air interface time sequence requirement; the sending end equipment copies the TB to be sent to obtain N TBs, wherein each copied TB is completely the same as the original TB and is sent on corresponding time frequency resources. And the sending end receives corresponding feedback according to the air interface time sequence.

For the receiving end equipment, according to the instruction of the scheduler, based on the allocated time frequency resources and the corresponding air interface time sequence requirements, the N TBs are respectively received, and as long as one TB is successfully received, the receiving of other TBs can be stopped. Of course, in order to improve the robustness of the feedback, positive feedback is performed for at least two TBs, i.e. the identification packet is correctly received. Only all TBs have failed to receive, negative feedback can be performed for one or more TBs.

Wherein, the receiving-stage device blindly detects the PDCCH, and considers that the receiving-stage device has been correctly accepted as long as one TB is successfully decoded. ACK feedback (i.e., positive feedback) is then performed. NACK is fed back (i.e., negative feedback) only if all TBs fail to be decoded.

Here, in actual application, the feedback may be in the form of feedback for each of the N TBs; only one or a plurality of feedback (the feedback number is less than or equal to N) can be fed back aiming at the N TBs; combined feedback may also be done, i.e. one feedback value for multiple TBs.

When sending downlink (sending from the base station to the terminal), the scheduler of the base station schedules the downlink process, that is, performs uplink authorization, and the specific process includes:

step 1: a scheduler positioned at an MAC layer judges whether a TB aiming at one terminal needs to start copy transmission or not; if not, the traditional existing scheduling mode is adopted; otherwise, starting the copy transmission scheduling and continuing the following steps;

step 2: a scheduler allocates one or more PDCCHs to a terminal and respectively indicates one or more copied TBs; carrying the identity of the duplicate transmission;

and step 3: the scheduler allocates PRBs to each TB, namely allocates a Physical Downlink Shared Channel (PDSCH);

and 4, step 4: the scheduler allocates an appropriate HARQ entity and/or HARQ process to each TB;

and 5: the scheduler configures a PDSCH channel used by the TB indicated by each PDCCH channel;

step 6: the scheduler configures a timing relation fed back by aiming at each TB;

and 7: when the scheduler sends the information to the physical layer of the base station, the physical layer is indicated to independently process and send each TB;

and 8: and the scheduler indicates the time sequence relation of the physical layer for receiving the uplink feedback.

When uplink transmission (terminal transmits to base station), the scheduler of the base station schedules an uplink process, that is, downlink resource allocation is performed, and the specific process includes:

step 1: a base station (a scheduler located at a MAC layer) decides whether a MAC TB for one terminal needs to initiate a duplicate transmission; if not, the traditional existing scheduling mode is adopted; otherwise, starting the copy transmission scheduling and continuing the following steps;

step 2: the scheduler transmits DCI0 (scheduling uplink information of PDCCH) to the terminal;

in practical applications, multiple PDCCHs carrying DCI0 may be transmitted, that is, one DCI0 may indicate one or multiple TBs, and when there are multiple MAC TBs, multiple DCI0 indications may be used. For example, 8 TBs are multiplexed, and 4 DCIs 0 may be used for scheduling, specifically, one DCI0 only indicates one most important PRB resource used by the TB, two DCIs 0 indicate three TB PRB resources used, and one DCI0 indicates one TB PRB resource used.

And step 3: after receiving DCI0, the terminal completes the multiple copy preparation of the TB according to the DCI0 indication, copies the TB to be copied for multiple copies, and sends the corresponding TB on each indicated resource;

when the MAC layer sends the PHY layer, the PHY layer is instructed to process and send each TB independently.

And 4, step 4: and the terminal determines the time sequence relation of the downlink feedback according to the received DCI0 so as to receive the downlink feedback.

As can be seen from the above description, in the solution of the embodiment of the present invention, after one TB is copied, the TB is transmitted at multiple time-frequency positions at the same time, so as to implement the transmission gain of multiple physical transmission channels, and thus, the complexity and cost of the terminal supporting multiple radio frequency channels are reduced.

In addition, when the scheme of the embodiment of the invention is applied to a 5G system, the gain of the bandwidth of the 5G system can be fully utilized.

In addition, the scheme of the embodiment of the invention has good compatibility and can be compatible with 3G, 4G and 5G networks. In 3G or 4G networks, each TB may be directly transmitted one by one.

In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a data transmission apparatus, which is arranged on the sending-end device, and as shown in fig. 5, the apparatus includes:

a copying unit 51, configured to copy a data packet to be sent to obtain N data packets; n is greater than or equal to 2; the N data packets are all identical to the data packet to be sent;

a first transmission unit 52, configured to send, on a corresponding resource, each data packet of the N data packets; the resources are respectively allocated to each of the N data packets, that is, the resources corresponding to each of the N data packets are independently allocated.

In an embodiment, the copying unit 51 is specifically configured to: and copying the data packet to be transmitted on the MAC layer of the sending end equipment or the PHY layer of the sending end equipment.

The first transmission unit 52 is further configured to receive feedback information of the receiving end device for the N data packets.

In an embodiment, the first transmission unit 52 is specifically configured to:

In an embodiment, when the sending end device is a network device, the apparatus may further include a scheduling unit, configured to:

judging whether the multi-channel copy transmission is needed to be carried out or not to obtain a judgment result;

In an embodiment, the scheduling unit may send the scheduling result indication to the receiving end device through DCI or MAC CE.

In an embodiment, the sending end device is a terminal; the first transmission unit 52 is further configured to receive a scheduling result indication sent by a network device; the scheduling result indication is generated based on resources allocated for the N data packets.

In practical applications, the first transmission unit 52 may receive the scheduling result indication sent by the network device through DCI or MAC CE.

In practical applications, the copying unit 51 may be implemented by a processor in a data transmission device; the first transmission unit 52 and the scheduling unit may be implemented by a processor in the data transmission apparatus in combination with a communication interface.

In order to implement the method of the receiving end device side in the embodiment of the present invention, an embodiment of the present invention further provides a data transmission apparatus, which is disposed on the receiving end device, and as shown in fig. 6, the apparatus includes:

a second transmission unit 61, configured to receive a data packet sent by a sending end device; wherein the content of the first and second substances,

In an embodiment, the data packet sent by the sending end device is copied at an MAC layer of the sending end device or a PHY layer of the sending end device.

In an embodiment, the second transmission unit 61 is further configured to send feedback information for N data packets to the sender device.

In an embodiment, after one of the N data packets is correctly received, the second transmission unit 61 sends, to the sending end device, correctly received feedback information that is fed back for at least one of the N data packets.

the second transmission unit 61 sends feedback information of reception failure, which is fed back for at least one data packet of the N data packets, to the sending end device after the N data packets are all received unsuccessfully.

In an embodiment, the receiving end device is a network device, and as shown in fig. 6, the apparatus may further include a scheduling unit 62, configured to:

In an embodiment, the scheduling unit 62 may send a scheduling result indication to the transmitting end device through DCI or MAC CE.

In an embodiment, the receiving end device is a terminal; the second transmission unit 61 is further configured to receive a scheduling result indication sent by a network device; the scheduling result indication is generated based on resources allocated for the N data packets.

In an embodiment, the second transmission unit 61 may receive a scheduling result indication sent by the network device through DCI or MAC CE.

In practical applications, the second transmission unit 61 and the scheduling unit 62 may be implemented by a processor in the data transmission device in combination with a communication interface.

It should be noted that: in the data transmission device provided in the above embodiment, only the division of the program modules is exemplified when data transmission is performed, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the device may be divided into different program modules to complete all or part of the processing described above. In addition, the data transmission device and the data transmission method provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments and are not described herein again.

Based on the hardware implementation of the program module, and in order to implement the method at the sending end device side in the embodiment of the present invention, an embodiment of the present invention further provides a sending end device, and as shown in fig. 7, the sending end device 70 includes:

a first communication interface 71, which can perform information interaction with a receiving end device;

the first processor 72 is connected to the first communication interface 71 to implement information interaction with the receiving end device, and is configured to execute the method provided by one or more technical solutions of the sending end device side when running a computer program. And the computer program is stored on the first memory 73.

Specifically, the first processor 72 is configured to copy a data packet to be sent, so as to obtain N data packets; n is greater than or equal to 2; the N data packets are all identical to the data packet to be sent;

the first communication interface 71 is configured to transmit, for each of the N data packets, on a corresponding resource; the resource is allocated to each of the N data packets, that is, the resource corresponding to each of the N data packets is allocated independently.

In an embodiment, the first processor 72 is specifically configured to: and copying the data packet to be transmitted on the MAC layer of the sending end equipment or the PHY layer of the sending end equipment.

In an embodiment, the first communication interface 71 is further configured to receive feedback information of the receiving end device for N data packets.

In an embodiment, the first communication interface 71 is specifically configured to:

In an embodiment, when the sending end device is a network device, the first processor 72 is further configured to:

sending a scheduling result indication to the receiving end device through the first communication interface 71 based on the resources allocated for the N data packets; the receiving terminal equipment is a terminal.

In an embodiment, the first processor 72 may transmit the scheduling result indication to the receiving end device through DCI or MAC CE.

In an embodiment, the sending end device is a terminal; the first communication interface 71 is further configured to receive a scheduling result indication sent by a network device; the scheduling result indication is generated based on resources allocated for the N data packets.

In practical applications, the first communication interface 71 may receive a scheduling result indication sent by the network device through DCI or MAC CE.

It should be noted that: the specific processing procedures of the first processor 72 and the first communication interface 71 can be understood with reference to the above-described methods.

Of course, in practice, the various components of the initiator device 70 are coupled together by a bus system 74. It will be appreciated that the bus system 74 is used to enable communications among the components of the connection. The bus system 74 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 74 in fig. 7.

The first memory 73 in the embodiment of the present invention is used to store various types of data to support the operation of the transmitting-end device 70. Examples of such data include: any computer program for operation on the sender device 70.

The method disclosed in the above embodiments of the present invention may be applied to the first processor 72, or implemented by the first processor 72. The first processor 72 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the first processor 72. The first Processor 72 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The first processor 72 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the first memory 73, and the first processor 72 reads the information in the first memory 73 and, in conjunction with its hardware, performs the steps of the foregoing method.

In an exemplary embodiment, the sender Device 70 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

Based on the hardware implementation of the program module, and in order to implement the method on the side of the receiving end device in the embodiment of the present invention, an embodiment of the present invention further provides a receiving end device, as shown in fig. 8, where the receiving end device 80 includes:

a second communication interface 81 capable of performing information interaction with the sending-end device;

the second processor 82 is connected to the second communication interface 81 to implement information interaction with the sending end device, and is configured to execute the method provided by one or more technical solutions of the receiving end device side when running a computer program. And the computer program is stored on the second memory 83.

Specifically, the second processor 82 is configured to receive a data packet sent by a sending end device through the second communication interface 81; wherein the content of the first and second substances,

receiving on respective resources for the N data packets; the resources corresponding to each of the N data packets are respectively allocated, that is, the resources corresponding to each of the N data packets are independently allocated.

In an embodiment, the second communication interface 81 is configured to send feedback information for N data packets to the sender device.

In an embodiment, after one of the N data packets is correctly received, the second communication interface 81 sends, to the sending end device, correctly received feedback information that is fed back for at least one of the N data packets.

and the second communication interface 81 sends feedback information of reception failure fed back by at least one data packet of the N data packets to the sending end device after the N data packets are all received unsuccessfully.

In an embodiment, the receiving device is a network device, and the second processor 82 is further configured to:

based on the resources allocated to the N data packets, sending a scheduling result indication to the sending end device through the second communication interface 81; the sending terminal equipment is a terminal.

In an embodiment, the second processor 82 may send a scheduling result indication to the transmitting end device through DCI or MAC CE.

In an embodiment, the receiving end device is a terminal; the second communication interface 81 is further configured to receive a scheduling result indication sent by a network device; the scheduling result indication is generated based on resources allocated for the N data packets.

In an embodiment, the second communication interface 81 may receive a scheduling result indication transmitted by the network device through DCI or MAC CE.

It should be noted that: the specific processing procedures of the second processor 82 and the second communication interface 81 can be understood with reference to the above-described methods.

Of course, in practice, the various components in the sink device 80 are coupled together by the bus system 84. It will be appreciated that the bus system 84 is used to enable communications among the components. The bus system 84 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 84 in fig. 8.

The second memory 83 in the embodiment of the present invention is used to store various types of data to support the operation of the receiving end device 80. Examples of such data include: any computer program for operation on the sink device 80.

The method disclosed in the above embodiments of the present invention may be applied to the second processor 82, or implemented by the second processor 82. The second processor 82 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the second processor 82. The second processor 82 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 82 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 83, and the second processor 82 reads the information in the second memory 83 to complete the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the sink device 80 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for performing the aforementioned methods.

It is understood that the memories (the first memory 73, the second memory 83) of the embodiments of the present invention may be either volatile memories or nonvolatile memories, and may include both volatile and nonvolatile memories. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The described memory for embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a data transmission system, as shown in fig. 9, where the system includes:

the sending end device 91 is configured to copy the data packets to be sent to obtain N data packets; n is greater than or equal to; the N data packets are all identical to the data packet to be sent; sending each data packet of the N data packets on a corresponding resource; wherein, resources are respectively allocated to each data packet in the N data packets;

the receiving end device 92 is configured to receive a data packet sent by the sending end device 91; receiving on respective resources for the N data packets; and the resources corresponding to each data packet in the N data packets are respectively allocated.

It should be noted that: the specific processing procedures of the sending end device 91 and the receiving end device 92 have been described in detail above, and are not described in detail here.

In an exemplary embodiment, the present invention further provides a storage medium, specifically a computer-readable storage medium, for example, a first memory 73 storing a computer program, where the computer program is executable by the first processor 72 of the transmitting-end device 70 to perform the steps of the side-by-side method of the transmitting-end device. For another example, the second memory 83 stores a computer program, which can be executed by the second processor 82 of the receiving-end device 80 to perform the steps of the receiving-end-device side method. The computer readable storage medium may be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disk, or CD-ROM.

It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In addition, the technical solutions described in the embodiments of the present invention may be arbitrarily combined without conflict.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A data transmission method is applied to sending terminal equipment and comprises the following steps:

2. The method of claim 1, wherein the replicating the data packet to be transmitted comprises:

and copying a data packet to be transmitted on a Media Access Control (MAC) layer of the sending end equipment or a physical layer of the sending end equipment.

3. The method according to claim 1, wherein the respective resource used for transmitting each data packet is at least one physical resource block, PRB, or at least one resource element, RE.

4. The method of claim 1, further comprising:

receiving feedback information of the receiving terminal equipment aiming at the N data packets; wherein the content of the first and second substances,

5. The method of claim 1, further comprising:

6. The method of claim 1, wherein the sender device is a network device; the method further comprises the following steps:

7. The method of claim 6, wherein the sending the scheduling result indication to the receiving end device comprises:

and sending a scheduling result indication to the receiving end equipment through downlink control information DCI or a media access control element MAC CE.

8. The method of claim 1, wherein the sending end device is a terminal; the method further comprises the following steps:

9. The method of claim 1, wherein the receiving the indication of the scheduling result sent by the network device comprises:

10. A data transmission method is applied to a receiving end device, and comprises the following steps:

11. The method of claim 10, wherein the data packet sent by the sender device is duplicated at a MAC layer of the sender device or a physical layer of the sender device.

12. The method of claim 10, wherein the corresponding resource used by the sender device to send each data packet is at least one PRB or at least one RE.

13. The method of claim 10, further comprising:

sending feedback information aiming at the N data packets to the sending end equipment; wherein the content of the first and second substances,

14. The method of claim 10, further comprising:

15. The method of claim 10, wherein the receiving end device is a network device; the method further comprises the following steps:

16. The method of claim 15, wherein the sending the scheduling result indication to the sender device comprises:

17. The method of claim 10, wherein the receiving end device is a terminal; the method further comprises the following steps:

18. The method of claim 17, wherein receiving the indication of the scheduling result sent by the network device comprises:

19. A data transmission apparatus, comprising:

20. A data transmission apparatus, comprising:

21. A transmitting-end device, comprising:

22. A receiving-end device, comprising: a second processor and a second communication interface; wherein the content of the first and second substances,

23. A transmitting-end device, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is adapted to perform the steps of the method of any one of claims 1 to 9 when running the computer program.

24. A receiving-end device, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is adapted to perform the steps of the method of any of claims 10 to 18 when running the computer program.

25. A storage medium having stored thereon a computer program for performing the steps of the method of any one of claims 1 to 9, or for performing the steps of the method of any one of claims 10 to 18, when the computer program is executed by a processor.