CN113133114A

CN113133114A - Information transmission method, device, related equipment and storage medium

Info

Publication number: CN113133114A
Application number: CN201911408012.7A
Authority: CN
Inventors: 孙军帅; 刘光毅; 黄宇红
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: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-07-16

Abstract

The invention discloses an information transmission method, an information transmission device, network equipment, a terminal and a storage medium. The method comprises the following steps: the network equipment sends Downlink Control Information (DCI) to the terminal; the DCI carries first information; the first information represents uplink resource related information which is copied and sent in a Media Access Control (MAC) layer of the terminal; wherein the first information comprises at least one of the following information: the total number of source packets and copied packets or the number of copied-only packets; the identification of the physical channel where each data packet is located; time-frequency domain resource related information of each data packet; hybrid automatic repeat request (HARQ) -related information for each packet.

Description

Information transmission method, device, related equipment and storage medium

Technical Field

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

Background

In a fifth generation mobile communication technology (5G) system, with the proposed ultra-reliable low-latency communication (URLLC) service, a duplication (english can be expressed as duplication) method is increasingly used, that is, the same data packet is transmitted on different links through technologies such as Carrier Aggregation (CA) and Dual Connectivity (DC)/Multi Connectivity (MC), so as to obtain robustness gain of multi-link parallel transmission.

However, how to efficiently perform the duplicate transmission is a problem to be solved.

Disclosure of Invention

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

The technical scheme of the embodiment of the invention is realized as follows:

the embodiment of the invention provides an information transmission method, which is applied to network equipment and comprises the following steps:

transmitting Downlink Control Information (DCI) to a terminal; the DCI carries first information; the first information represents uplink resource related information which is copied and sent in a Media Access Control (MAC) layer of the terminal; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the total number of source packets and copied packets or the number of copied-only packets;

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

hybrid automatic repeat request (HARQ) -related information for each packet.

In the above scheme, the first information further includes second information; the second information indicates whether to start a duplicate transmission.

In the above scheme, the method further comprises:

receiving a first data packet sent by the terminal; the first data packet carries third information; the third information indicates that the terminal needs to perform copy transmission;

and sending the DCI to the terminal based on the first data packet.

In the above scheme, the method further comprises:

receiving a Buffer Status Report (BSR) sent by the terminal;

transmitting the DCI to the terminal based on the BSR; wherein the content of the first and second substances,

the BSR carries information of data to be duplicated for transmission, or a media access control element (MAC CE) carrying the BSR carries information of data to be duplicated for transmission.

In the above scheme, the method further comprises:

receiving a Scheduling Request (SR) for duplicate transmission sent by the terminal;

and transmitting the DCI to the terminal based on the SR.

In the above scheme, all data packets correspond to one DCI;

alternatively, the first and second electrodes may be,

one DCI for each data packet.

In the above scheme, the method further comprises:

and determining that the terminal needs to copy and send the data packet.

In the above scheme, the method further comprises:

acquiring service characteristics through Radio Resource Control (RRC) signaling;

and determining to start the copy function by using the service characteristics.

In the above scheme, the method further comprises:

when receiving data packets on the time-frequency domain resources corresponding to each data packet, decoding the data packets received on the corresponding time-frequency domain resources or merging and decoding the data packets received on different corresponding time-frequency domain resources aiming at the time-frequency domain resources with the signal quality meeting a first condition; and aiming at the time-frequency domain resources with the signal quality not meeting the first condition, merging and decoding the data packets received on the different corresponding time-frequency domain resources.

In the above scheme, the method further comprises:

receiving a second data packet; the second data packet is a retransmission data packet of a third data packet; the third data packet is a source data packet or is obtained by copying the source data packet; the second data packet is sent by adopting a second code rate; the third data packet is sent by adopting a first code rate; the second code rate is lower than the first code rate.

The embodiment of the invention also provides an information transmission method, which is applied to a terminal and comprises the following steps:

receiving DCI sent by network equipment; the DCI carries first information; the first information represents uplink resource related information which is copied and sent at an MAC layer of the terminal; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

In the foregoing solution, the first information further includes: second information; the second information indicates whether to start a duplicate transmission.

In the above scheme, the method further comprises:

sending a first data packet to the network device; the first data packet carries third information; the third information indicates that the terminal needs to perform copy transmission;

receiving DCI sent by the network device based on the first data packet;

in the above scheme, the method further comprises:

sending a BSR to the network device;

receiving DCI sent by the network device based on the BSR; wherein the content of the first and second substances,

the BSR carries information of data to be duplicated and transmitted, or the MAC CE carrying the BSR carries information of data to be duplicated and transmitted.

In the above scheme, the method further comprises:

transmitting an SR for duplicate transmission to the network device;

and receiving the DCI transmitted by the network equipment based on the SR.

In the above scheme, all data packets to be sent correspond to one DCI;

alternatively, the first and second electrodes may be,

and each data packet to be sent corresponds to one DCI.

In the above scheme, the method further comprises:

and determining that the data packet needs to be copied and sent by the data packet.

In the above scheme, the method further comprises:

acquiring service characteristics through RRC signaling;

In the above scheme, the method further comprises:

sending a second data packet to the network device; the second data packet is a retransmission data packet of a third data packet; the third data packet is a source data packet or is obtained by copying the source data packet; the second data packet is sent by adopting a second code rate; the third data packet is sent by adopting a first code rate; the second code rate is lower than the first code rate.

An embodiment of the present invention further provides an information transmission apparatus, including:

a first transmitting unit, configured to transmit a Downlink Control Information (DCI) to a terminal; the DCI carries first information; the first information represents uplink resource related information which is copied and sent at an MAC layer of the terminal; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

a second receiving unit, configured to receive DCI sent by a network device; the DCI carries first information; the first information represents uplink resource related information which is copied and sent at an MAC layer of the terminal; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

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

the first communication interface is used for sending DCI to a terminal; the DCI carries first information; the first information represents uplink resource related information which is copied and sent at an MAC layer of the terminal; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

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

the second communication interface is used for receiving DCI sent by the network equipment; the DCI carries first information; the first information represents uplink resource related information which is copied and sent at an MAC layer of the terminal; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

An embodiment of the present invention further provides a network 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 one of the methods of the network device side when running the computer program.

An embodiment of the present invention further provides a terminal, 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 of the above-mentioned methods of the terminal side 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 on the network device side or implements the steps of any method on the terminal side.

According to the information transmission method, the information transmission device, the related equipment and the storage medium provided by the embodiment of the invention, the network equipment sends DCI to the terminal; the DCI carries first information; the first information represents uplink resource related information which is copied and sent at an MAC layer of the terminal; wherein the first information comprises at least one of the following information: the total number of source packets and copied packets or the number of copied-only packets; the identification of the physical channel where each data packet is located; time-frequency domain resource related information of each data packet; the HARQ related information of each data packet can realize the duplication and transmission at the MAC layer according to the received uplink resource related information, thereby simplifying a high-layer link, and realizing multiplexing gain with higher reliability and real-time property by means of flexible scheduling capability of the MAC layer.

Drawings

Fig. 1 is a schematic flow chart of a method for transmitting information at a network device side according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a method for transmitting information at a terminal side according to an embodiment of the present invention;

FIG. 3 is a flow chart illustrating a method of information transmission according to an embodiment of the present invention;

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

fig. 5 is a diagram illustrating a MAC PDU format in the related art;

FIG. 6 is a diagram illustrating a MAC PDU format according to an embodiment of the present invention;

FIG. 7 is a diagram illustrating a second MAC PDU format according to the related art;

FIG. 8 is a diagram illustrating a second MAC PDU format according to an embodiment of the present invention;

fig. 9 is a diagram illustrating a third MAC PDU format in the related art;

FIG. 10 is a diagram illustrating a third MAC PDU format according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of another information transmission apparatus according to an embodiment of the present invention;

FIG. 13 is a diagram illustrating a network device according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of an information 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.

When using duplicate (also understood as multiplexed) transmission, one implementation is to make the duplication of packets at the Packet Data Convergence Protocol (PDCP) layer, providing for simultaneous data transmission on multiple links for one User Equipment (UE). When the mode is adopted, for one terminal, the terminal is required to keep uplink synchronization on each link, and the terminal is required to have certain transceiving capacity (multi-band transceiving), 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.

Based on this, the packet can be copied at the MAC layer. The data packet is copied and transmitted at the MAC layer, the upper link can be simplified by copying at the MAC layer, and multiplexing gain with higher reliability and real-time performance is realized by means of flexible scheduling capability of the MAC layer and multi-channel capability brought by CA.

When copying is performed at the MAC layer, how to schedule in the uplink direction (the direction in which the network side transmits information to the terminal) to perform copy transmission is a particularly important issue.

Based on this, in various embodiments of the present invention, a network device transmits DCI to a terminal; the DCI carries first information; the first information represents uplink resource related information which is duplicated and sent in an MAC layer of the terminal.

Wherein the duplicate transmission is: copying a source data packet to obtain one or more copied data packets; sending the source packet and/or one or more copied packets to a recipient; wherein the source packet and the copied packet are identical.

When duplicate transmission is performed at the MAC layer, transmission-related processing is performed on each packet alone only at the lower layer (including the physical layer (PHY) layer), and transmission-related processing is not performed on each packet at the upper layer (radio link control (RLC), PDCP).

An embodiment of the present invention provides an information transmission method, which is applied to a network device, and as shown in fig. 1, the method includes:

step 100: determining that the uplink needs to be copied and sent with a data packet;

that is, it is determined to start the copy function.

In practical application, the method for determining that the uplink needs to perform the duplication and transmission of the data packet may be set according to needs, for example, may be determined according to service characteristics of a terminal, such as quality of service (QoS). For example, the reliability of the QoS requirement of the uplink data packet is particularly high (for example, the QoS class is greater than the first threshold), and it may be determined that the uplink needs to perform duplicate transmission of the data packet; for another example, the QoS requirement of the uplink data packet is relatively high (for example, the QoS class is greater than the second threshold and smaller than the first threshold), and the load of the air interface is relatively light (the load is smaller than a certain threshold), at this time, it may be determined that the uplink needs to perform the duplicate transmission of the data packet.

Here, it should be noted that the threshold value may be determined as needed.

Step 101: and transmitting the DCI to the terminal.

Here, the DCI carries first information.

The first information represents uplink resource related information which is duplicated and sent in an MAC layer of the terminal.

The first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

Wherein each copied packet is identical to the source packet.

The above mentioned data packet refers to: a data packet to be transmitted.

In practical application, the network device may specifically be a base station, such as a next generation node b (gnb).

Data of the MAC layer needs to be transmitted to a Physical (PHY) layer, and thus, the packet may be referred to as a Transport Block (TB), which is referred to as the 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, the PHY protocol entity receives the PDU transmitted by the MAC protocol entity, which is called TB, and before the PHY layer performs encoding, the TB may be called a codeword (codeword).

The total takes the value of the number of replications + 1.

The number of copy-only packets may be understood as the number of copies.

The identifier of the physical channel in which each data packet is located refers to the identification information of the physical channel of the air interface in which the data packet is located, and is used for indicating the physical channel used when one or more TBs (data packets to be transmitted) with the best or better channel quality are transmitted. According to the indication information, the terminal can preferentially select the indicated TB for decoding.

In practical applications, the identification information of the Physical Channel may be any identification capable of identifying the Physical Channel of the TB slot, such as a Carrier Index (Carrier Index), a Carrier Indicator (Carrier Indicator), a Cell Index (Cell Index), a Physical Cell ID (PCI), a Cell ID (Cell Identifier) (capable of indicating the Cell in which the Physical Channel is located), a Physical Channel ID (Physical Channel ID), a starting Physical Resource Block (PRB) Index (Index) of the Physical Channel, an Offset value of the starting PRB Index of the Physical Channel or an Index (Offset Index) of the starting PRB Index Offset value of the Physical information Channel, an Offset value of the starting PRB Index of the Physical Channel relative to a specified baseline or an Index of the starting PRB Index relative to a specified baseline, a bandwidth part (BWP) Index of the Physical Channel, a bandwidth part (tbp) Index of the Physical Channel, and a Physical Channel Identifier (Physical Channel Identifier) of the Physical Channel, ID of BWP where the physical channel is located, or index of Resource Element (RE) of the physical channel.

Where the indices are relative and the IDs are globally uniformly numbered. For example, for BWP index, BWP ID, it is assumed that BWP ID may be a value between 0 and 273. 4 BWPs for one user, the index may be 0 to 3, but the ID of the corresponding BWP may be a value between 0 and 273.

When at least two physical channels exist in the physical channel used for copy transmission and are transmitted in one carrier, different physical channels need to be identified; this field may not be carried when all physical channels used by the duplicate transmission are no longer within one carrier.

In practical application, the time-frequency domain resource related information of each data packet refers to frequency domain resources and time domain resource allocation information of a bearer data packet (which may also be understood as a TB), such as a specifically used PRB index, a timeslot number, and the like.

The HARQ-related information may include: identification information of the HARQ entity and HARQ information.

In practical application, the identification information of the HARQ entity may be a HARQ ID. When all data packets use the same HARQ entity, the first information may not include the information; when the data packet uses at least two HARQ entities, the first information needs to include the information.

The HARQ information may include a modulation scheme, a New Data Indicator (NDI) and a Redundancy Version (RV), an HARQ process index, a timing relationship of received Data and feedback ACK/NACK for each HARQ process, and the like.

Here, in actual application, one HARQ process may be used or a plurality of HARQ processes may be used for scheduling transmission at a time. Each HARQ process has information such as a modulation mode, NDI, RV, feedback timing and the like.

In actual application, the first information may further include second information; the second information indicates whether to start the duplicate transmission, for example, 1bit may be used to indicate, and when set to 0, indicates to close the duplicate transmission; when set to 1, indicates that duplicate transmission is turned on.

In the related art, the DCI format for uplink transmission includes DCI0_ 0 and DCI0_1, however, DCI0_ 0 and DCI0_1 can only schedule an uplink physical shared channel (PUSCH) of one Cell (Cell); in addition, only DCI0_1 may carry a Carrier indication (Carrier Indicator), which is selectable (0 bit or 3 bit). In the related art, data copy transmission at the MAC layer is not supported.

In the embodiment of the present invention, the first information is sent to the terminal through DCI.

Wherein, in actual application, all data packets correspond to one DCI; that is, one DCI indicates uplink resource-related information corresponding to all packets. Of course, each data packet may correspond to one DCI; that is, one DCI indicates uplink resource-related information corresponding to one packet. A plurality of data packets may also correspond to one DCI, that is, one DCI indicates uplink resource related information corresponding to the plurality of data packets in all the data packets.

In the uplink transmission process, after the network device obtains the data information reported by the terminal, the uplink resource authorization scheduling is performed, so for fast replication transmission, it is necessary that both the network and the terminal have the same prior information so as to facilitate the terminal to fast transmit the information of the data to be replicated and transmitted, including the size of the data packet to be replicated and the information of whether the data packet is to be transmitted currently, to the network device, that is, the network device obtains the service characteristics of the terminal, thereby performing fast authorization according to the service characteristics.

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

acquiring service characteristics of a terminal through RRC signaling;

The uplink transmission process is to perform uplink resource authorization scheduling after the network device obtains the data information reported by the terminal, so that the network device needs to acquire the data information reported by the terminal, and the uplink transmission process can be implemented by adopting the following methods: .

A first mode, receiving a first data packet sent by the terminal; the first data packet carries third information; the third information indicates that the terminal needs to perform copy transmission; and sending the DCI to the terminal based on the first data packet.

Wherein the first data packet is transmitted on the first resource; the resource size of the first resource is capable of transmitting a data packet.

Here, in practical application, the first resource may be used for transmitting a normal packet or may be used for transmitting a duplicate packet. When the terminal has resources for transmitting the non-duplicate packets (i.e., the resource size is capable of transmitting the non-duplicate packets), the above-described processing may be performed.

In the second way, the terminal may directly send the BSR, so that the network device sends DCI to the terminal based on the BSR.

Specifically, receiving a BSR sent by the terminal;

Here, the BSR may be transmitted on a second resource, and then the size of the second resource is at least capable of transmitting a BSR.

The BSR carries information of data to be duplicated for transmission, such as the total data amount for duplication transmission.

The MCE carries information of data that needs to be duplicated and transmitted, for example, the BSR carries only the amount of source data that needs to be duplicated and transmitted, and the MAC CE carries the duplication times.

In practical applications, when there is no first resource, that is, there is no resource as large as this, a resource capable of sending the BSR size may be adopted to send the BSR that needs to copy the transmitted data.

Wherein the second resource may be an UL Grant allocated by the network device. That is, the second resource may be configured in the initial access or dynamically configured in advance.

In a third way, a resource capable of sending the SR size may be used to send an SR that needs to be duplicated for transmission, so as to obtain an uplink grant.

Specifically, receiving an SR sent by the terminal;

transmitting the DCI to the terminal based on the SR; wherein the content of the first and second substances,

the third resource size is capable of transmitting an SR.

Wherein the SR is transmitted on a third resource, the SR refers to an SR for duplicate transmission, and the third resource may be an UL Grant allocated by the network device. That is, the third resource may be configured in the initial access or dynamically configured in advance.

Here, in practical application, when there is no second resource, that is, there is no resource with that size, the resource capable of sending the SR size may be used to send the SR that needs to be duplicated for transmission, so as to obtain the uplink grant.

It should be noted that: in practical application, one of the three modes can be selected according to requirements to realize the method.

In an embodiment, the method may further include:

Wherein the first condition may be set according to a requirement, for example, a signal quality threshold is set, and when the signal quality is greater than or equal to the signal quality threshold, it is determined that the signal quality satisfies the first condition; when the signal quality is less than the signal quality threshold, determining that the signal quality does not satisfy a first condition.

In practical application, the number of the data packets for merging and decoding can be determined according to requirements.

In an embodiment, the method may further include:

receiving a second data packet; the second data packet is a retransmission data packet of a third data packet; the third data packet is a source data packet or is obtained by copying the data packet to be sent; the second data packet is sent by adopting a second code rate; the third data packet is sent by adopting a first code rate; the second code rate is lower than the first code rate.

When retransmitting, the lower code rate can improve the success of data transmission and increase the robustness of receiving.

Correspondingly, an embodiment of the present invention further provides an information transmission method, which is applied to a terminal, and as shown in fig. 2, the method includes:

step 201: receiving DCI sent by network equipment;

here, the DCI carries first information; the first information represents uplink resource related information which is duplicated and sent in an MAC layer of the terminal.

Wherein

The first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

Step 202: and sending a data packet based on the first information.

Here, the transmitted packet may be a source packet or a packet obtained by copying the source packet. The source packet is identical to the copied packet.

In an embodiment, the method may further include:

a first data packet sent to the terminal; the first data packet carries third information; the third information indicates that the terminal needs to perform copy transmission; and receiving the DCI transmitted by the network equipment based on the first data packet.

In an embodiment, the method may further comprise:

sending a BSR to the network device;

In an embodiment, the method may further comprise:

transmitting an SR for duplicate transmission to the network device;

and receiving the DCI transmitted by the network equipment based on the SR.

In an embodiment, the method may further comprise:

In practical application, the network device may notify the terminal, for example, notify the terminal through RRC signaling that the terminal needs to perform the duplicate transmission of the data packet, and of course, may also determine that the terminal needs to perform the duplicate transmission of the data packet in other manners, which is not limited in the embodiment of the present invention.

In an embodiment, the method may further comprise:

acquiring service characteristics through RRC signaling;

Here, it should be noted that the specific implementation of the terminal and the network device side determining to start the copy function is the same.

In an embodiment, the method may further comprise:

An embodiment of the present invention provides an information transmission method, as shown in fig. 3, the method includes:

step 301: the network equipment sends DCI to the terminal;

here, the DCI carries first information; the first information represents uplink resource related information which is copied and sent at an MAC layer of the terminal; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ-related information per packet

Step 302: and the terminal receives DCI sent by the network equipment.

It should be noted that: the specific processing procedures of the network device and the terminal have been described in detail above, and are not described in detail here.

In the information transmission method according to the embodiment of the present invention, network equipment transmits DCI to a terminal; the DCI carries first information; the first information represents uplink resource related information which is copied and sent at an MAC layer of the terminal; wherein the first information comprises at least one of the following information: the total number of source packets and copied packets or the number of copied-only packets; the identification of the physical channel where each data packet is located; time-frequency domain resource related information of each data packet; the HARQ related information of each data packet can realize the duplication and transmission at the MAC layer according to the received uplink resource related information, thereby simplifying a high-layer link, and realizing multiplexing gain with higher reliability and real-time property by means of flexible scheduling capability of the MAC layer.

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

In the application embodiment, the second information is recorded as a Duplication Flag (Duplication Flag), the total number of source packets and duplicate packets is recorded as Duplication num, and the identifier of the physical channel where the packets are located is recorded as a physical id (physical id).

In the uplink transmission process, the base station performs uplink resource authorization scheduling after obtaining the data information reported by the UE, so for fast duplicate transmission, it is necessary that both the base station and the UE have the same prior information (which may be referred to as service characteristics) to facilitate the UE to fast send data related information to be duplicated and transmitted, including the size of a data packet to be duplicated and transmitted, whether to send the data packet at present, and the like, to the base station, so that the base station performs fast authorization according to the data related information.

The required prior information can be configured to the base station and the UE in the RRC signaling interaction phase of the base station and the UE.

Specifically, when the UE applies for service establishment, the UE and the base station interact with a characteristic value (service characteristic) of the applied data transmission channel through RRC signaling between the UE and the base station, and then the UE and the base station perform a preparation operation in advance of copying and transmitting the characteristic value.

The characteristic value of the data transmission channel carried in the RRC signaling may include: the QoS flow (flow) bearer or Radio Bearer (RB) or logical channel or transport channel or physical channel may be used to transmit data packets on an Access Stratum (AS), i.e., base station and terminal L1, L2, L3 layers, with delay requirements, the number of times of duplication transmission, the probability requirement of successful transmission of a data packet at one time, and an indication of starting the duplication transmission.

Here, the signaling carrying the QoS flow bearer or the characteristic value of the RB, the logical channel, the transport channel, the physical channel, or the like may be transmitted by the UE to the base station, or may be transmitted by the base station to the UE. Such as an RRC Setup Request (RRC Setup Request), an RRC Setup (RRC Setup), an RRC Setup Complete (RRC Setup Complete) message, an RRC Reconfiguration (RRC Reconfiguration) in RRC Reconfiguration (RRC Reconfiguration), an RRC Reconfiguration Complete (RRC Reconfiguration Complete) message, and the like in RRC connection Setup (RRC connection Setup).

When judging that the data packet on the channel needs to start copy transmission according to the characteristic value of the data transmission channel, the following steps are carried out:

when configuring a physical channel or physical resource for a UE, a network side needs to configure an air interface physical channel or physical resource supporting the UE for quickly notifying a base station of uplink data arrival notification to the UE in advance, for example, configure an SR transmission cycle and an activation cycle for duplicate transmission, and a Physical Uplink Control Channel (PUCCH) physical channel resource and power used by a corresponding SR.

When the UE has an uplink data packet to send and needs to use duplicate transmission (which can be determined according to the above-mentioned characteristic value of the data channel), the base station needs to perform scheduling. As shown in fig. 4, the process includes:

step 401: receiving a data packet sent by an upper layer at an MAC layer of the UE;

that is, in the MAC layer of the UE, the UE is triggered to transmit uplink data when receiving a data packet from an upper layer on a data transmission channel.

Step 402: at the MAC layer, determining whether the data packet on the data channel needs to be duplicated and transmitted according to the characteristic value of the data transmission channel, if not, executing step 403, and if so, executing step 404;

step 403: using the existing data transmission processing process to apply for resources and complete data transmission, and then executing step 414;

step 404: judging whether uplink wireless air interface resources or uplink physical channels are copied for transmission, if so, executing the step 405, and if not, executing the step 406;

that is, it is determined whether or not the UL Grant can perform the duplicate transmission.

Step 405: performing data replication and transmission by using the UL Grant, and then performing step 414;

step 406: judging whether UL Grant (configured by DCI) or uplink wireless air interface resources (including configured by DCI and periodic resources) can carry out data transmission of non-copy transmission, if so, executing step 407, and if not, executing step 408;

that is, it is determined whether or not there is a radio resource (e.g., UL Grant or uplink radio air interface resource) that can perform data transmission for non-duplicate transmission.

Here, the expression of the radio air interface resource is an uplink physical channel.

Step 407: transmitting the data-related information of the duplicate transmission by using the radio resource, requesting the base station to perform a duplicate transmission authorization, and then performing step 413;

here, step 407 may include the following two specific implementations:

first, the MAC CE carrying the BSR is transmitted using the radio resource, i.e., a control packet is transmitted. The BSR characterizes the data buffer status of the data transmission channel that needs to be duplicated for transmission. After receiving the BSR, the base station obtains a characteristic value of the data transmission channel according to the identifier of the data transmission channel corresponding to the BSR, determines that the data transmission channel needs to be copied and transmitted according to the characteristic value of the data transmission channel, obtains the size (in the form of byte length or bit length) of data to be copied and transmitted on the data transmission channel according to the BSR value, and then performs uplink resource authorization on the UE according to the size of a data packet on the data transmission channel to be copied and transmitted, i.e., obtains an UL Grant for the copy transmission.

Second, an indication (i.e. third information) is carried in the data packet transmitted by the radio resource, which is denoted as duplicationnflag and DF. The DF length can be 1bit, when the DF length is set to 0, the DF length does not need to be copied and transmitted; a setting of 1 indicates that duplicate transmission is required. After receiving the MAC PDU, the base station obtains a DF value from a header of the MAC PDU, if the DF value indicates "start copy transmission", the base station determines and selects a data transmission channel to be copied and transmitted according to Context (UE Context) information (including a feature value of each data transmission channel) of the UE and feature values of all data transmission channels of the UE, then obtains a data size (in a form of byte length or bit length) to be copied and transmitted on the data transmission channel according to data cache information on the data transmission channel, and then performs uplink resource authorization on the UE according to a data packet size on the data transmission channel to be copied and transmitted, i.e., obtains an UL Grant to be copied and transmitted.

Wherein, fig. 5 shows a format of a MAC PDU in the related art, in which an L field (expressed as field in english) is 8 bits, and when the format is adopted, the format can be modified, as shown in fig. 6, and an R field in fig. 5 is modified into a DF field. Similarly, fig. 7 shows another MAC PDU format with 16 bits in the L field, which can be modified when using this format, such as the R field in fig. 7 modified to the DF field as shown in fig. 8. Similarly, fig. 9 shows another MAC PDU format in the related art, and when the MAC PDU format is adopted, the MAC PDU format may be modified, as shown in fig. 10, a first R field in fig. 9 is modified into a DF field, and of course, when actually applied, a second R field in fig. 9 may also be modified into a DF field.

Step 408: further judging whether the UL Grant capable of being used for sending the BSR exists, if so, executing step 409, and if not, executing step 410;

that is, it is determined whether there is an UL Grant that can transmit the BSR, i.e., the resource size can transmit the BSR.

Step 409: transmitting BSR by using the UL Grant, requesting the base station to perform copy authorization, and then executing step 413;

here, after receiving the BSR, the base station obtains the characteristic value of the data transmission channel according to the identifier of the data transmission channel corresponding to the BSR, determines that the data transmission channel needs to be copied and transmitted according to the characteristic value of the data transmission channel, obtains the size (in the form of byte length or bit length) of the data that needs to be copied and transmitted on the data transmission channel according to the BSR value, and then performs uplink resource authorization for the UE according to the size of the data packet on the data transmission channel that needs to be copied and transmitted, that is, obtains the uplink resource authorization for performing copy transmission.

Step 410: further judging whether the UL Grant capable of being used for transmitting the SR exists, if so, executing step 411, otherwise, executing step 412;

that is, it is determined whether or not the UL Grant can transmit the SR, i.e., the resource size can transmit the SR to request the UL Grant for the duplicate transmission of the packet.

In order to bring the data related information of the copy transmission in the SR, a new SR scheme needs to be introduced.

Specifically, the SR resource configuration in the related art is as follows:

SchedulingRequestResourceId The IE SchedulingRequestResourceId is used to identify scheduling request resources on PUCCH.

SchedulingRequestResourceId information element

one or several values from 1 to maxNrofSR-Resources serve as Resources for SR when replicating transmissions. In signaling configuration, the UE is explicitly configured, for example, 2, 4, 6, 8 are selected as SR resource IDs for duplicate transmission. When the UE side needs to perform the copy transmission, the SR is sent on the appointed resource ID. After receiving the SR, the base station may determine that the UE needs to perform the copy transmission, then the base station determines and selects a data transmission channel that needs to be copied and transmitted according to the UE Context information (including the feature value of each data transmission channel) of the UE and according to the feature values of all the data transmission channels of the UE, then obtains the data size form that needs to be copied and transmitted on the data transmission channel according to the data cache information on the data transmission channel, which may be a byte length or a bit length, and performs uplink resource authorization for the UE according to the data packet size on the data transmission channel that needs to be copied and transmitted, that is, obtains the uplink resource authorization for performing the copy transmission.

Step 411: transmitting SR by using UL Grant, requesting copy transmission authorization, and then performing step 413;

step 412: initiating a Random Access (RA) procedure, applying for uplink resource authorization, and then performing step 413;

that is, an uplink resource access procedure is initiated through the RA procedure, so as to obtain an uplink resource grant for performing the duplicate transmission.

Step 413: after receiving the authorization, the UE performs the duplication and transmission of the data packet, and then performs step 414;

here, when the uplink resource authorization is performed by SR or RA, the packet may be transmitted by duplication after receiving the authorization, or the information related to the data transmitted by duplication may be transmitted, and the resource authorization may be further requested to perform duplication transmission.

Step 414: the current processing flow is ended.

When the base station performs uplink resource authorization, uplink resource related information which is duplicated and transmitted in the MAC layer of the UE is transmitted through DCI.

How to transmit uplink resource related information through DCI is described in detail below in conjunction with two DCI formats, DCI Format0_0 and DCI Format0_1 (two scenarios are used).

The first scenario is: all data packets (including source data packets and duplicate data packets) use one DCI for scheduling indication.

When the Format of the DCI is Format0_0, the DCI includes the following information:

identification for DCI formats-1 bit (see related art)

-duplicate Flag-1 bits, set to 0 when no duplicate transmission is turned on; set to 1 when initiating a duplicate transmission

-DuplicationNum-4 bits as defined 0 ~ 15; a packet may be duplicated into 15 transmissions for a total of 16 transmissions.

Wherein the duplicate num is a valid value only when the duplicate Flag indicates that the duplicate transmission is turned on.

The following fields are filled in as a whole according to the actual DuplicationNum. For example, if the duplicate value is 2, two sets of fields are filled in, where one set corresponds to a source data packet to be sent, and the other set corresponds to a duplicate data packet to be sent.

{/'fill out multiple times in accordance with DuplicationNum {/} {/' DuplicationNum {/}

-Physical ID-3 bits as defined as Cell ID. Cell ID is used for identification.

Wherein, only when the duplicate Flag indicates that the copy transmission is on, the parsing is performed according to the duplicate num.

HARQ ID-3 bits may be sent using the same HARQ entity, i.e. all HARQ IDs have the same value; the transmission may also be performed using HARQ processes of different HARQ entities.

(

Can refer to the related art)/. frequency domain resource is recorded in a manner that is not changed, but

Filling in for a plurality of times according to the DuplicationNum, wherein each data packet corresponds to one frequency domain resource block +

Time domain resource assignment-4 bits (see related art)

Frequency hopping flag-1 (see related art)

Modulation and coding scheme-5 bits (see the related art)

-New data indicator–1bit

Redundacyversion-2 bits (see related art)

-HARQ process number–4bits

-HARQ Soft Buffer Flag-1 bits; when one HARQ entity is set into one soft buffer, the HARQ entity is set into 0; different processes can use different soft caches, and when at least two processes use two independent soft caches, the soft cache is set to be 1

TPC command for scheduled PUSCH-2 bits (see related art)

-Padding bits,if required.

UL/SUL indicator-1 bi (see the related art)

Fill in multiple }/. according to DuplicationNum }/

When the Format of the DCI is Format0_1, the DCI includes the following information:

identification for DCI formats-1 bit (see related art)

Carrier indicator-0 or 3bits (see related art)

UL/SUL indicator-0 or 1bits (see the related art)

Band width part indicator-0, 1or 2bits (see related art)

-duplicate Flag-1 bits, set to 0 when no duplicate transmission is turned on; the setting is 1 when the duplicate transmission is turned on.

The following fields are filled in as a whole according to the actual DuplicationNum. For example, if the duplicate value is 2, two sets of fields are filled in, where one field corresponds to a source data packet to be sent, and the other field corresponds to a duplicate data packet B to be sent.

-Physical ID-3 bits as defined as Cell ID. Cell ID is used for identification.

-Frequency domain resource assignment- (cf. related art)

Time domain resource assignment-0, 1,2,3, or 4bits (see related art)

Frequency hopping flag-0 or 1bit (see related art)

Modulation and coding scheme-5 bits (see the related art)

-New data indicator–1bit

Redundacyversion-2 bits (see related art)

-HARQ process number–4bits

-1^stDownlink assignment index-1 or 2bits (see related art)

TPC command for scheduled PUSCH-2 bits (see related art)

-SRS resource indicator

Fill in multiple }/. according to DuplicationNum }/

The second scenario is: and each data packet to be sent (including a source data packet to be sent and a copy data packet to be sent) uses one DCI to carry out scheduling indication.

identification for DCI formats-1 bit (see related art)

-Physical ID-3 bits as defined as Cell ID. Cell ID is used for identification.

(

Can refer to the related technology)

Time domain resource assignment-4 bits (see related art)

Frequency hopping flag-1 bit (see related art)

Modulation and coding scheme-5 bits (see the related art)

-New data indicator–1bit

Redundacyversion-2 bits (see related art)

-HARQ process number–4bits

TPC command for scheduled PUSCH-2 bits (see related art)

-Padding bits,if required.

UL/SUL indicator-1 bit (see the related art)

identification for DCI formats-1 bit (see related art)

Carrier indicator-0 or 3bits (see related art)

UL/SUL indicator-0 or 1bit (see the related art)

Band part indicator-0, 1or 2bits (see related art).

-Physical ID-3 bits as defined as Cell ID. Cell ID is used for identification.

-Frequency domain resource assignment- (cf. related art)

Time domain resource assignment-0, 1,2,3, or 4bits (see related art)

Frequency hopping flag-0 or 1bit (see related art)

Modulation and coding scheme-5 bits (see the related art)

-New data indicator–1bit

Redundacyversion-2 bits (see related art)

-HARQ process number–4bits

-1^stDownlink assignment index-1 or 2bits (see related art)

TPC command for scheduled PUSCH-2 bits (see related art)

-SRS resource indicator

When scheduling uplink using CI0_0 and DCI0_1, it can be seen from the above description that:

1. the uplink still only allows a terminal to transmit a single codeword.

2. When the UE needs to start the duplicate transmission, the base station sets the duplicate Flag to 1, namely to a valid value.

3. When the base station performs UL _ Grant, the base station carries the radio resource used by each data packet, and the HARQ entity is status information of the HARQ process.

4. When one piece of DCI is used to allocate resources of all data packets, the DCI needs to carry the number of copies, and the time-frequency resource and HARQ relationship used by each data packet.

5. The UE may transmit using a process of one or HARQ entities.

Correspondingly, after the UE receives the DCI, the terminal transmits a data packet on the PUSCH specified by the UL _ Grant according to the indication information of the DCI in the received PDCCH.

If a network side adopts a DCI to indicate all the duplicated data packets, the corresponding data packets are sent according to the resource positions and the multiplexing number in the DCI.

If the network side adopts a plurality of DCIs to indicate all the copied data packets, the corresponding data packets are sent according to the resource positions in the DCIs.

And receiving the feedback of the base station for the copied data packet according to the feedback timing relation indicated in the DCI.

And the base station receives the uplink data packet at the MAC layer according to the set feedback time sequence relation.

When the base station receives, the base station detects on each allocated time-frequency domain resource block.

The base station sorts the received time-frequency domain resource blocks from high to low according to the received historical measurement of the UE; setting a threshold, and independently detecting and decoding the time-frequency domain resource block with the historical measurement quantity higher than the threshold; and for the time-frequency domain resource block with the historical measurement quantity lower than the threshold, detecting and decoding by channel combination or decoding combination. As long as one decoding is successful, the packet is correctly received.

When one data packet is successfully decoded, the base station feeds back an ACK (namely positive feedback); when all the data packets fail to be decoded, the NACK is fed back (i.e., negative feedback).

In retransmission, the base station uses a lower code rate by scheduling duplicate transmissions of the retransmitted data packets. For example, one data packet is sent from the time-frequency domain resource occupied by the original two data packets, thereby realizing that the code rate is reduced by half and increasing the robustness of the receiving. If the number of data packets is modified, the information of the HARQ entity and HARQ process needs to be modified. For processes not used in retransmission, indication information may be sent for release.

If the retransmission after several times of copy transmission still fails, the re-establishment process of the UE Link is triggered, and the Failure of the high-level Link (RLC) is reported.

As can be seen from the above description, in the scheme of the embodiment of the present invention, the DCI is used to send the uplink resource related information that is duplicated and sent by the MAC layer to the terminal, and the terminal is scheduled to send the duplicated data packet, so that multiple duplicate transmission of the data packet is achieved, and thus the transmission gain of multiple physical transmission channels is achieved, and thus, the complexity and cost for the terminal to support 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 system has good expansibility and can quickly support a large number of users; moreover, the scheme of the embodiment of the invention has good compatibility and can be compatible with a third generation mobile communication technology (3G), a fourth generation mobile communication technology (4G) and a 5G network.

In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides an information transmission apparatus, which is disposed on a network device, and as shown in fig. 11, the apparatus includes:

a first transmitting unit 111, configured to transmit the DCI to the terminal; the DCI carries first information; the first information represents uplink resource related information which is copied and sent at an MAC layer of the terminal; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

In an embodiment, as shown in fig. 11, the apparatus may further include:

a first receiving unit 112, configured to receive a first data packet sent by the terminal; the first data packet carries third information; the third information indicates that the terminal needs to perform copy transmission;

the first sending unit 111 is configured to send the DCI to the terminal based on the first data packet.

In an embodiment, the first receiving unit 112 is configured to receive a buffer status report BSR sent by the terminal;

the first transmitting unit 111 is configured to transmit the DCI to the terminal based on the BSR; wherein the content of the first and second substances,

In an embodiment, the first receiving unit 112 receives an SR for duplicate transmission sent by the terminal;

the first transmitting unit 111 is configured to transmit the DCI to the terminal based on the SR; wherein the content of the first and second substances,

the third resource size is capable of transmitting an SR.

In an embodiment, the apparatus may further include:

and the first determining unit is used for determining that the terminal needs to copy and send the data packet.

In an embodiment, the first determining unit is further configured to:

acquiring service characteristics through RRC signaling;

In an embodiment, the apparatus may further include: a processing unit to:

In an embodiment, the first receiving unit 112 is further configured to receive a second data packet; the second data packet is a retransmission data packet of a third data packet; the third data packet is a source data packet or is obtained by copying the source data packet; the second data packet is sent by adopting a second code rate; the third data packet is sent by adopting a first code rate; the second code rate is lower than the first code rate.

In practical application, the first sending unit 111 and the first receiving unit 112 may be implemented by communication interfaces in a data information transmission device; the first determination unit may be implemented by a processor in the information transmission apparatus in combination with a communication interface; the processing unit may be implemented by a processor in an information transmission device.

In order to implement the method on the terminal side in the embodiment of the present invention, an embodiment of the present invention further provides an information transmission apparatus, which is disposed on a terminal, and as shown in fig. 12, the apparatus includes:

a second receiving unit 121, configured to receive DCI transmitted by a network device; the DCI carries first information; the first information represents uplink resource related information which is copied and sent at an MAC layer of the terminal; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

In an embodiment, as shown in fig. 12, the apparatus may further include: a second sending unit 122, configured to send the first data packet to the network device; the first data packet carries third information; the third information indicates that the terminal needs to perform copy transmission;

the second receiving unit 121 is configured to receive DCI transmitted by the network device based on the first data packet.

In an embodiment, the second sending unit 122 is configured to send a BSR to the network device;

the second receiving unit 121, configured to receive DCI sent by the network device based on the BSR; wherein the content of the first and second substances,

In an embodiment, the second sending unit 122 is configured to send, to the network device, an SR for duplicate transmission;

the second receiving unit 121, configured to receive DCI sent by the network device based on the SR; wherein the content of the first and second substances,

the third resource size is capable of transmitting an SR.

In an embodiment, the apparatus may further include:

and the second determining unit is used for determining that the terminal needs to copy and send the data packet.

In an embodiment, the second determining unit is further configured to:

acquiring service characteristics of a terminal through RRC signaling;

In an embodiment, the second sending unit 122 is further configured to:

In practical application, the second receiving unit 121 and the second sending unit 122 may be implemented by a communication interface in a data information transmission device; the second determination unit may be implemented by a processor in the information transmission apparatus in combination with the communication interface.

It should be noted that: in the information transmission device provided in the above embodiment, only the division of the program modules is exemplified when information is transmitted, 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 information transmission apparatus and the information transmission method provided by the above embodiments belong to the same concept, and specific implementation processes thereof are detailed 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 on the network device side in the embodiment of the present invention, an embodiment of the present invention further provides a network device, as shown in fig. 13, where the network device 130 includes:

a first communication interface 131, which can perform information interaction with a terminal;

the first processor 132 is connected to the first communication interface 131 to implement information interaction with a terminal, and is configured to execute a method provided by one or more technical solutions of the network device side when running a computer program. And the computer program is stored on the first memory 133.

Specifically, the first communication interface 131 is configured to send a downlink control information DCI to a terminal; the DCI carries first information; the first information represents uplink resource related information which is copied and sent at an MAC layer of the terminal; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

In an embodiment, the first communication interface 131 is further configured to:

and sending the DCI to the terminal based on the first data packet.

receiving a BSR sent by the terminal;

In an embodiment, the first communication interface 131 is further configured to receive an SR for duplicate transmission sent by the terminal;

the third resource size is capable of transmitting an SR.

In an embodiment, the first processor 132 is configured to determine that the terminal needs to perform duplicate transmission of a data packet.

In one embodiment, the first processor 132 is further configured to:

acquiring service characteristics through RRC signaling;

In one embodiment, the first processor 132 is further configured to:

In an embodiment, the first communication interface 131 is further configured to receive a second data packet; the second data packet is a retransmission data packet of a third data packet; the third data packet is a source data packet or is obtained by copying the source data packet; the second data packet is sent by adopting a second code rate; the third data packet is sent by adopting a first code rate; the second code rate is lower than the first code rate.

It should be noted that: the specific processes of the first processor 132 and the first communication interface 131 can be understood with reference to the above-described methods.

Of course, in practice, the various components in the network device 130 are coupled together by a bus system 134. It will be appreciated that the bus system 134 is used to enable communications among the components. The bus system 134 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 134 in FIG. 13.

The first memory 133 in the embodiment of the present invention is used to store various types of data to support the operation of the network device 130. Examples of such data include: any computer program for operating on network device 130.

The method disclosed in the above embodiments of the present invention may be applied to the first processor 132, or implemented by the first processor 132. The first processor 132 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 first processor 132. The first Processor 132 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 132 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 133, and the first processor 132 reads the information in the first memory 133 and, in conjunction with its hardware, performs the steps of the foregoing method.

In an exemplary embodiment, the network Device 130 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 terminal side in the embodiment of the present invention, an embodiment of the present invention further provides a terminal, as shown in fig. 14, where the terminal 140 includes:

a second communication interface 141, which is capable of performing information interaction with a network device;

the second processor 142 is connected to the second communication interface 141 to implement information interaction with a network device, and is configured to execute a method provided by one or more technical solutions of the terminal side when running a computer program. And the computer program is stored on the second memory 143.

Specifically, the second communication interface 141 is configured to receive DCI sent by a network device; the DCI carries first information; the first information represents uplink resource related information which is copied and sent at an MAC layer of the terminal; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

In an embodiment, the second communication interface 141 is configured to: sending a first data packet to the network device; the first data packet carries third information; the third information indicates that the terminal needs to perform copy transmission;

and receiving the DCI transmitted by the network equipment based on the first data packet.

In an embodiment, the second communication interface 141 is configured to:

sending a BSR to the network device;

receiving DCI sent by the network equipment based on the BSR; wherein the content of the first and second substances,

In an embodiment, the second communication interface 141 is configured to send, to the network device, an SR for duplicate transmission on a third resource;

receiving DCI sent by the network equipment based on the SR; wherein the content of the first and second substances,

the third resource size is capable of transmitting an SR.

In an embodiment, the second processor 142 is configured to determine that the terminal needs to perform duplicate transmission of a data packet.

In an embodiment, the second processor 142 is further configured to:

acquiring service characteristics through RRC signaling;

In an embodiment, the second communication interface 141 is further configured to:

It should be noted that: the specific processes of the second processor 142 and the second communication interface 141 can be understood by referring to the above-described methods.

Of course, in practice, the various components in the terminal 140 are coupled together by a bus system 144. It will be appreciated that the bus system 144 is used to enable communications among the components. The bus system 144 includes a power bus, a control bus, and a status signal bus in addition to the data bus. For clarity of illustration, however, the various buses are labeled as bus system 144 in fig. 14.

The second memory 143 in the embodiment of the present invention is used to store various types of data to support the operation of the terminal 140. Examples of such data include: any computer program for operation on the terminal 140.

The method disclosed in the above embodiments of the present invention may be applied to the second processor 142, or implemented by the second processor 142. The second processor 142 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by an integrated logic circuit of hardware or an instruction in the form of software in the second processor 142. The second processor 142 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 142 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 143, and the second processor 142 reads the information in the second memory 143, and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the terminal 140 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 (first memory 133, second memory 143) of embodiments of the present invention may be either volatile memory or non-volatile memory, and may include both volatile and non-volatile 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. 15, where the system includes: network device 151 and terminal 152.

Among them, it should be noted that: the processing procedures of the network device 151 and the terminal 152 are described in detail above and are not described herein.

In an exemplary embodiment, the present invention further provides a storage medium, specifically a computer-readable storage medium, for example, a first memory 133 storing a computer program, where the computer program is executable by the first processor 132 of the network device 130 to perform the steps of the network device side method. For example, the second memory 143 may store a computer program, which may be executed by the second processor 142 of the terminal 140 to perform the steps of the terminal-side method described above. 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. An information transmission method applied to a network device includes:

sending downlink control information DCI to a terminal; the DCI carries first information; the first information represents uplink resource related information which is copied and sent at a Media Access Control (MAC) layer of the terminal; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

hybrid automatic repeat request, HARQ, related information for each packet.

2. The method of claim 1, wherein the first information further comprises second information; the second information indicates whether to start a duplicate transmission.

3. The method of claim 1, further comprising:

and sending the DCI to the terminal based on the first data packet.

4. The method of claim 1, further comprising:

receiving a Buffer Status Report (BSR) sent by the terminal;

the BSR carries information of data to be duplicated and transmitted, or a MAC CE carrying the BSR carries information of data to be duplicated and transmitted.

5. The method of claim 1, further comprising:

receiving a scheduling request SR for duplicate transmission sent by the terminal;

and transmitting the DCI to the terminal based on the SR.

6. The method of claim 1, wherein all packets correspond to one DCI;

alternatively, the first and second electrodes may be,

one DCI for each data packet.

7. The method according to any one of claims 1 to 6, further comprising:

and determining that the terminal needs to copy and send the data packet.

8. The method of claim 7, further comprising:

9. The method according to any one of claims 1 to 6, further comprising:

10. The method according to any one of claims 1 to 6, further comprising:

11. An information transmission method is applied to a terminal, and comprises the following steps:

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

12. The method of claim 11, wherein the first information further comprises: second information; the second information indicates whether to start a duplicate transmission.

13. The method of claim 11, further comprising:

14. The method of claim 11, further comprising:

sending a BSR to the network device;

15. The method of claim 11, further comprising:

transmitting an SR for duplicate transmission to the network device;

and receiving the DCI transmitted by the network equipment based on the SR.

16. The method of claim 11, wherein all data packets to be transmitted correspond to one DCI;

alternatively, the first and second electrodes may be,

and each data packet to be sent corresponds to one DCI.

17. The method according to any one of claims 11 to 16, further comprising:

18. The method of claim 17, further comprising:

acquiring service characteristics through RRC signaling;

19. The method according to any one of claims 11 to 16, further comprising:

20. An information transmission apparatus, comprising:

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

21. An information transmission apparatus, comprising:

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

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

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

23. A terminal, comprising: a second processor and a second communication interface; wherein the content of the first and second substances,

the first information includes at least one of the following information:

the identification of the physical channel where each data packet is located;

time-frequency domain resource related information of each data packet;

HARQ related information for each packet.

24. A network 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 10 when running the computer program.

25. A terminal, 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 11 to 19 when running the computer program.

26. A storage medium having stored thereon a computer program for performing the steps of the method of any one of claims 1 to 10 or for performing the steps of the method of any one of claims 11 to 19 when executed by a processor.