CN114745751B - Data transmission method and device, electronic equipment and storage medium - Google Patents

Data transmission method and device, electronic equipment and storage medium Download PDF

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Publication number
CN114745751B
CN114745751B CN202210401187.0A CN202210401187A CN114745751B CN 114745751 B CN114745751 B CN 114745751B CN 202210401187 A CN202210401187 A CN 202210401187A CN 114745751 B CN114745751 B CN 114745751B
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transmission
data
channel
information
resource allocation
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CN114745751A (en
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李洋
魏垚
董明洋
金宁
黄韬
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control

Abstract

The embodiment of the application provides a data transmission method and device, electronic equipment and a storage medium, wherein the data transmission method comprises the steps of performing redundancy coding on an original data block to be transmitted to obtain an extended data block; acquiring transmission information weights of a plurality of transmission channels, wherein the transmission information weights are used for determining transmission data quantity of each channel in the plurality of transmission channels; distributing the expansion data blocks to the transmission channels according to the transmission information weights so as to transmit the expansion data blocks in parallel through the transmission channels; according to the application, the original data block is subjected to data expansion, and the expanded data is subjected to grouping transmission according to weights through different transmission channels, so that the size of the data block transmitted by each transmission channel simultaneously is reduced, the reliability of information transmission is ensured, meanwhile, the weight can be used for auxiliary adjustment, and on the basis of further ensuring the reliability of a URLLC link, the data transmission time delay is reduced and the utilization efficiency of transmission resources is improved.

Description

Data transmission method and device, electronic equipment and storage medium
Technical Field
The present application relates to the field of communications, and in particular, to a data transmission method and apparatus, an electronic device, and a storage medium.
Background
The Ultra-Reliable and Low-latency communication (URLLC) is used as one of three typical application scenes of 5G (5 th Generation Mobile Communication Technology, fifth generation mobile communication technology), has extremely high requirements on latency and reliability, and can be widely applied to application scenes such as cloud games, AR/VR (Augmented Reality )/(Virtual Reality), massive industrial automation business, real-time digital twinning and the like. In URLLC, the reliability of data transmission can be improved while ensuring low latency by performing data copy transmission and enhancement on PDCP (Packet Data Convergence Protocol ) layer data.
Currently, in the current URLLC scenario in the air-transmission field of wireless communication, the PDCP replication method is mainly focused on the improvement of the indication method for flexibly triggering the PDCP replication function under the existing small data packet characteristics, and mainly improves the URLLC reliability at the cost of bandwidth resources. However, in use, the large data traffic of URLLC and the continuous data transmission scenario when the data fluctuation is not considered, which results in too low resource utilization rate when the above problems are encountered, and thus the method is not suitable for the multi-data concurrency scenario.
Disclosure of Invention
To solve the above technical problems, embodiments of the present application provide a data transmission method and apparatus, an electronic device, a computer readable storage medium, and a computer program product. And further, the size of the data block transmitted by each transmission channel at the same time is reduced, the data transmission delay is reduced, and the utilization efficiency of transmission resources is improved when PDCP replication of URLLC service facing big data packets is realized at least to a certain extent.
Other features and advantages of the application will be apparent from the following detailed description, or may be learned by the practice of the application.
According to an aspect of an embodiment of the present application, there is provided a data transmission method including: redundancy coding is carried out on the original data block to be transmitted to obtain an extended data block; acquiring transmission information weights of a plurality of transmission channels, wherein the transmission information weights are used for determining transmission data quantity of each channel in the plurality of transmission channels; and distributing the extended data blocks to the plurality of transmission channels according to the transmission information weight so as to transmit the extended data blocks in parallel through the plurality of transmission channels.
According to an aspect of an embodiment of the present application, there is provided a data transmitting apparatus, including an encoding module configured to perform redundancy encoding on an original data block to be transmitted to obtain an extended data block; the weight module is used for acquiring transmission information weights of a plurality of transmission channels, wherein the transmission information weights are used for determining transmission data quantity of each channel in the plurality of transmission channels; and the sending module is used for distributing the extended data blocks to the transmission channels according to the transmission information weight so as to transmit the extended data blocks in parallel through the transmission channels.
In the technical solution provided in the embodiment of the present application, the weight module configuration includes a scoring unit, configured to score channel quality of the m transmission channelsThe weight module is configured to: based on the positive correlation between the channel quality score and the amount of transmission data for each transmission channel, a transmission information weight for each transmission channel is obtained. According to channel quality score gamma m Dividing the extended transmission data block, wherein the proportion of the transmission data quantity of each PDCP channel to the extended data quantity is gamma m 。
In the technical solution provided in the embodiment of the present application, the apparatus further includes an information query module, configured to query information on a plurality of transmission channels to obtain downlink control information, where the downlink control information includes an uplink and downlink resource allocation field of each transmission channel, and the uplink and downlink resource allocation field includes channel state information (ChannelStateInformation, CSI) and Reference signal received power (Reference-SignalReceivingPower, RSRP). The method comprises the steps of carrying out a first treatment on the surface of the The scoring unit is configured to: and carrying out channel quality scoring on each channel according to the uplink and downlink resource allocation field, wherein the better the channel condition is, the higher the channel quality score is set, and the larger the proportion of the data blocks to be transmitted is.
In the technical solution provided by the embodiments of the present application, the encoding module is configured to: and performing rateless code encoding on the original data block with the data length G based on the preset decoding overhead epsilon to obtain an extended data block with the data length of (1+epsilon) G.
According to an aspect of the embodiment of the present application, there is also provided a data transmission method, including: receiving an extended data block transmitted in parallel through a plurality of transmission channels, wherein the extended data block is obtained by performing redundancy coding on an original data block to be transmitted, and the transmission data quantity of each channel in the plurality of transmission channels is determined by the transmission information weights of the plurality of transmission channels; and decoding and combining the parallel transmitted extended data blocks to obtain the original data blocks.
According to an aspect of an embodiment of the present application, there is provided a data receiving apparatus, including a receiving module configured to receive, through a plurality of transmission channels, an extended data block transmitted in parallel, the extended data block being obtained by performing redundancy encoding on an original data block to be transmitted, and a transmission data amount of each of the plurality of transmission channels being determined by transmission information weights of the plurality of transmission channels; and the decoding and merging module is used for decoding and merging the parallel transmitted extended data blocks to obtain the original data blocks.
In the technical solution provided by the embodiments of the present application, the decoding and merging module is configured to: acquiring the data length of an extended data block received by a transmission channel; and when the data length is (1+epsilon) G, judging that the data of the transmission channel is completely received, wherein epsilon is the decoding overhead of performing the non-rate code encoding on the original data block, and G is the data length of the original data block.
According to an aspect of an embodiment of the present application, there is provided a data transmission system including a data transmitting apparatus and a data receiving apparatus, the data transmitting apparatus including: the coding module is used for carrying out redundancy coding on the original data block to be transmitted to obtain an extended data block; the weight module is used for acquiring transmission information weights of a plurality of transmission channels, wherein the transmission information weights are used for determining transmission data quantity of each channel in the plurality of transmission channels; a transmission module, configured to allocate the extended data block to the plurality of transmission channels according to the transmission information weight, so as to transmit the extended data block in parallel through the plurality of transmission channels; the data receiving apparatus includes: the receiving module is used for receiving the extended data blocks transmitted in parallel through a plurality of transmission channels, wherein the extended data blocks are obtained by performing redundancy coding on the original data blocks to be transmitted, and the transmission data quantity of each channel in the plurality of transmission channels is determined by the transmission information weights of the plurality of transmission channels; and the decoding and merging module is used for decoding and merging the parallel transmitted extended data blocks to obtain the original data blocks.
According to an aspect of an embodiment of the present application, there is provided an electronic apparatus including: one or more processors; and a storage means for storing one or more programs which, when executed by the one or more processors, cause the electronic device to implement the data transmission method as described above.
According to an aspect of an embodiment of the present application, there is provided a computer-readable storage medium having stored thereon computer-readable instructions, which when executed by a processor of a computer, cause the computer to perform the data transmission method as described above.
In the technical schemes provided by some embodiments of the present application, by performing data expansion on an original data block and then performing packet transmission on expanded data according to weights through different transmission channels, the size of a data block transmitted concurrently by each transmission channel is reduced, the reliability of information transmission is ensured, and meanwhile, auxiliary adjustment can be performed through the weights, so that on the basis of further ensuring the reliability of a URLLC link, the data transmission delay is reduced and the utilization efficiency of transmission resources is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:
FIG. 1 is a schematic diagram of an exemplary system architecture shown in accordance with an exemplary embodiment of the present application;
fig. 2 is a flow chart of a data transmission method according to an exemplary embodiment of the present application;
fig. 3 is a flowchart for acquiring transmission information weights in a data transmission method according to an exemplary embodiment of the present application;
FIG. 4 is a schematic diagram of encoding an original data block in a data transmission method according to an exemplary embodiment of the present application;
fig. 5 is a schematic diagram illustrating a weight-based transmission of an extended data block in a data transmission method according to an exemplary embodiment of the present application;
FIG. 6 is a flow chart of another data transmission method according to an exemplary embodiment of the present application;
fig. 7 is a block diagram of a data transmission apparatus according to an exemplary embodiment of the present application;
Fig. 8 is a block diagram of another data transmission apparatus according to an exemplary embodiment of the present application;
fig. 9 is a block diagram of a data transmission system according to an exemplary embodiment of the present application;
fig. 10 is a schematic diagram of a hardware structure of a terminal device according to an exemplary embodiment of the present application;
fig. 11 is a schematic structural view of another terminal device according to an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
In the present application, the term "plurality" means two or more. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., a and/or B may represent: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
It should be noted that, first, the access system is divided into three layers: the first layer is a physical layer (PHY), the second layer is a medium access control sublayer (MAC), a radio link control sublayer (RLC) and a packet data convergence protocol sublayer (PDCP), and the third layer is a radio resource control layer (RRC). Wherein the physical layer is the lowest layer of the wireless access system, and uses the transmission channel as an interface to provide service to the upper layer.
The URLLC is used as one of three typical application scenes of 5G, and has extremely high requirements on time delay and reliability, wherein the data transmission reliability can be improved while low time delay can be ensured by carrying out data copy transmission and enhancement on the PDCP layer data. In order to meet the high reliability requirements in URLLC data transmission, the 3GPP (3 rd Generation Partnership Project, third generation partnership project) RAN2 (radio resource management of radio interface layer two and layer three) determines the PDCP data copy transmission mechanism in the standardization process. And on the basis that the R15 version supports data copy transmission on an air interface link, the R16 version is enhanced, and the reliability of service transmission is further improved.
PDCP is a functional entity, and from the perspective of the protocol plane, the protocol structure mainly comprises two layers: a Radio Network Layer (RNL) and a Transport Network Layer (TNL). The PDCP layer strips the transport technology of the transport network layer from the air interface technology of the access network part E-UTRAN (Evolution UMTS Terrestrial Radio Access Network, UMTS evolved terrestrial radio access network) without regard to air interface related problems for the layers above it. The PDCP layer corresponds to a separate layer of a wireless network and a wired network, and maps a protocol of a higher layer to a lower layer through PDCP. And each of the receiving end and the transmitting end is provided with a peer protocol entity which is responsible for packaging and analyzing the PDCP message. One UE (User Equipment) corresponds to a plurality of RBs (Radio bearers), and each RB corresponds to one PDCP entity. Each PDCP entity is associated with one, two or four RLC (Radio Link Control, radio link layer control protocol) entities, depending on the characteristics of the RBs (e.g., unidirectional or bidirectional) and the transmission mode of the RLC. The main task of RLC is retransmission management. When the HARQ (Hybrid Automatic Repeat Request ) of the MAC layer has exhausted the number of retransmissions, the RLC continues the retransmissions.
The Ratelesscodes (Ratelesscodes) are a special channel code, and the Ratelesscodes are codes with a non-fixed code rate. Unlike conventional fixed rate channel coding, the encoder of the rateless code can continuously generate code symbols until the receiving end decodes successfully and feeds back acknowledgement information, and the final code rate is determined by the decoder. The inherent randomness and channel adaptive characteristics of the rateless code are suitable for being applied to time-varying wireless channels.
The technical scheme of the embodiment of the application relates to the technologies of wireless communication and the like, and is specifically described by the following embodiments:
FIG. 1 is a schematic diagram of an exemplary system architecture shown in an exemplary embodiment of the application.
Referring to fig. 1, a system architecture may include PDCP, a data transmission device 101, and an RLC entity, wherein the data transmission device 101 may be a communication line connecting a switch and the switch, and a transmission medium may include an overhead open wire, a cable, an optical cable, a radio wave, etc., or may be at least one of a processing computer, a computing cluster, a neural network computer, etc. The data transmission device 101 may be used by a skilled person to implement redundancy coding of the original data blocks sent from PDCP to RLC entity.
Illustratively, the data transmission apparatus 101 generates an extended data block by performing a rateless code encoding on an original data block G transmitted from PDCP to RLC entity; acquiring transmission information weights of a plurality of transmission channels, wherein the transmission information weights are used for determining transmission data quantity of each channel in the plurality of transmission channels; and distributing the extended data blocks to a plurality of transmission channels according to the transmission information weight so as to transmit the extended data blocks in parallel through the plurality of transmission channels. In a URLLC scene facing to multi-data concurrent transmission, the problem that the PDCP replication technology is low in transmission resource utilization efficiency due to overlarge data packets and overlarge bandwidth consumption is solved, and the conflict between reliability and time delay is relieved.
It should be noted that, the data transmission method provided by the embodiment of the present application is generally performed by the data transmission device 101.
The implementation details of the technical scheme of the embodiment of the application are described in detail below:
fig. 2 is a flowchart of a data transmission method, which may be performed by a transmission device, which may be the data transmission device 101 shown in fig. 1, according to an exemplary embodiment of the present application. Referring to fig. 2, the data transmission method at least includes steps S210 to S230, and is described in detail as follows:
S210, performing redundancy coding on the original data block to be transmitted to obtain an extended data block.
In one embodiment of the present application, the original data block G to be transmitted is redundancy-encoded, the original data block G is data-expanded by the redundancy encoding, and the expanded data block G is expanded c Is 1+ epsilon times the original size, where epsilon is the set decoding overhead. For example, in this embodiment, the decoding overhead may be set to be epsilon=45%, and the data block G is extended after extension c Is 1.45 times the original data block G.
In one embodiment of the present application, an original data block of data length G transmitted from PDCP to RLC entity is subjected to a rateless code. By adding a non-rate code, the reliability can be improved by increasing redundancy, similar to the use of channel coding. Original data is encoded by the rateless code, and the code with the length of (1+epsilon) G is generated. For the receiving end, as long as any (1+epsilon) G data length is received, namely enough data is received, all original information can be successfully recovered with high probability, and the channel transmission has the self-adaptive characteristic by performing the code-free coding.
In one embodiment of the present application, the essence of channel coding is to increase the reliability of communication, so that it is a task of channel coding to improve the data transmission efficiency and reduce the bit error rate. The channel coding process in this embodiment is to insert a no-rate code into the original data block, so as to achieve the purpose of error judgment and correction at the receiving end.
S220, acquiring transmission information weights of a plurality of transmission channels, wherein the transmission information weights are used for determining transmission data quantity of each channel in the plurality of transmission channels.
Fig. 4 shows a schematic diagram of encoding an original data block in a data transmission method.
As shown in fig. 4, in one embodiment of the present application, transmission information weights of a plurality of transmission channels are acquired, wherein the transmission information weights are used to determine the transmission data amounts of the respective channels of the plurality of transmission channels. In this embodiment, the amount of information transmitted by each transmission channel is determined by the weight of the transmission information, different weights can be set according to the conditions of the channels through the weight of the transmission information, for example, 4 transmission channels are used in total, when the conditions of each transmission channel are consistent, the weight of the transmission information is 1, and at this time, the length of information transmitted by each transmission channel is:
γ m G c ＝0.25×(1+ε)×γ m x g= 0.3625G < G type (1)
Wherein, gamma m For transmitting information weight, G is the original data block, G c Epsilon is the set decoding overhead, m is the number of channels, epsilon=45% for extending the data block.
Fig. 5 shows a schematic diagram of weight-based transmission of an extended data block in a data transmission method.
As shown in fig. 5, in this embodiment, as can be seen from the information length transmitted by each transmission channel of the above information, the length of each transmission channel is smaller than that of the original PDCP duplication methodThe information length G reduces the transmission delay by transmitting extended information packets, by packet transmission. Let the processing delay of the signal in this embodiment be t p The transmission delay of the signal is t t T due to large data transmission amount p ≥t t ，t p The link delay of the traditional PDCP duplication method can be regarded as approximately unchanged:
T＝t p +t t (2)
In this embodiment, the link delay based on the information transmission weight is:
T′＝t p +max[0.25(1+ε)γ 1 t t ，0.25(1+ε)γ 2 t t ，0.25(1+ε)γ 3 t t ，0.25(1+ε)
γ 4 t t ](3)
Compared with the link delay T of the conventional PDCP duplication method, the link delay T' based on the information transmission weight in this embodiment has a reduced delay ratio of:
as shown in fig. 5, when the original data block is encoded and the information is expanded, the expanded data block is divided for transmission, the time delay is obviously reduced compared with the time delay of directly carrying out four-path parallel transmission on the data block, and the time delay jitter of the air interface TTS can be effectively reduced by a packet transmission mode.
Fig. 3 shows a flowchart for acquiring transmission information weights in a data transmission method.
In one embodiment of the present application, the obtaining the transmission information weights of the plurality of transmission channels may be performed according to the method flow in fig. 3, specifically referring to fig. 3, and includes the following steps:
S310, determining the transmission information weight of each transmission channel based on the channel quality of each transmission channel, wherein the transmission information weight is positively correlated with the data quantity to be transmitted of the channel.
In one embodiment of the present application, there is a positive correlation between the channel quality score and the amount of data transmitted for each transmission channel, and the channel quality score and the amount of data transmitted are in a linear increasing relationship, and the better the channel condition, the higher the channel quality score of the transmission channel, which represents the larger the amount of data that it can transmit, in such a way that more information can be transmitted over the channel path with good channel conditions.
S320, carrying out channel quality scoring on the plurality of transmission channels;
in one embodiment of the application, a network supporting multiple transmission channels is defined in IEEE (Institute of Electrical and Electronics Engineers ) standard 802.11, one of which must be selected for communication between stations at network start-up. The available transmission quality is different for each channel for various reasons. Conventionally, a station determines a channel suitable for network communication based on a scan that detects the energy levels of all supported channels. A channel may be considered suitable for network communication if its noise level from other sources is below a predetermined threshold on that channel, or if it is below the noise level of other channels. In this embodiment, more information can be transmitted through a channel path with good channel conditions by performing channel quality scoring on a plurality of transmission channels, and by this way, the reliability of the URLLC link can be further ensured, so as to implement channel adaptive adjustment.
In one embodiment of the present application, the channel quality score for each transmission channel may be obtained by the method in S410-S420:
s410, inquiring information of a plurality of transmission channels to obtain downlink control information, wherein the downlink control information comprises uplink and downlink resource allocation fields of each transmission channel;
in one embodiment of the present application, DCI (Downlink Control Information ) information may be obtained by performing information query on a plurality of transmission channels, and the DCI information may be transmitted through PDCCH (Physical Downlink Control Channel ) and includes resource allocation and other control information on one or more UEs. In the information such as the uplink and downlink MCS (Resource allocation, resource scheduling information) in LTE, the UE needs to demodulate the DCI in the PDCCH first, and then can demodulate the PDSCH (including broadcast message, paging, data of the UE, etc.) belonging to the UE itself at the corresponding resource location. In this embodiment, the uplink and downlink resource allocation field of each transmission channel may be obtained from the DCI information. The resource allocation field may include a frequency domain resource allocation indication field and a time domain resource allocation indication field, where the PDSCH is obtained from the frequency domain resource allocation indication field, i.e., DCI-RIV, and the time domain resource allocation indication field may enable the PDSCH to obtain a time slot in which the PDSCH is located, a time domain length of the PDSCH, and a starting symbol index of the PDSCH in the time slot according to a channel allocation condition of the RB resource indicated by the bitmap. The resource allocation field may also include an HARQ indication field, where the HARQ indication field is used to indicate how long the HARQ-ACK information needs to be transmitted after the PDSCH completes data transmission, and may further include a new data indication, CBGTI (code block group flushing out information, code block group transmission information) and CBGFI (code block groupflushing out information, code block group clear information), which CBGs are retransmitted according to the indication of the CBGTI field, and whether the retransmitted CBGs can be combined with the CBGs received before according to the indication of the CBGFI field.
S420, carrying out channel quality scoring on each channel according to the uplink and downlink resource allocation field.
In one embodiment of the present application, a channel quality score may be performed on each channel according to the resource allocation field, where the quality score may be a manner of describing a value of the resource allocation field, for example, the resource allocation field may be normalized, the processed data value is used as a quality score of the channel, and then a transmission information weight is set according to the quality score. When the channel quality of each channel is scored, a grading manner may be adopted, for example, five different grades may be set A, B, C, D, E in advance, each grade corresponds to a different weight value, the corresponding grade is matched according to the resource allocation condition, then the corresponding weight value is selected, and the transmission information weight is set.
S230, distributing the expansion data blocks to the transmission channels according to the transmission information weights so as to transmit the expansion data blocks in parallel through the transmission channels.
In one embodiment of the present application, taking the number of channels as 4 as an example, the data blocks can be divided into four groups according to the channel conditions, and how much information is transmitted by each path is determined by the information transmission weight. The information transmission weights of the four channels are respectively as follows: γ1, γ2, γ3, γ 4 The information length transmitted by each channel can be calculated by equation (1), so that a plurality of transmission channels transmit the spread data blocks in parallel. E.g. when the original data block G sent from PDCP to RLC entity is coded with a no rate code, epsilon=45%, gamma 1 ＝1、γ 2 ＝1、γ 3 ＝0.5、γ 4 The information length transmitted per channel is shown in table 1 =1.5:
TABLE 1
Path Information transmission weight Extending data block length
Path 1 1 0.3625G
Path 2 1 0.3625G
Path 3 0.5 0.18125G
Path 4 1.5 0.54275G
As shown in table 1, the information length of the 4 channels transmitted is 0.3625G, 0.3625G, 0.18125G, 0.54275G, respectively, and the transmission information length of each path is smaller than the information length G of the original PDCP duplication method.
Fig. 6 is a flowchart of another data transmission method, which may also be performed by the transmission apparatus, according to an exemplary embodiment of the present application, and includes at least steps S610 to S620, which are described in detail below:
s610, receiving extended data blocks transmitted in parallel through a plurality of transmission channels, wherein the extended data blocks are obtained by performing redundancy coding on original data blocks to be transmitted, and the transmission data quantity of each channel in the plurality of transmission channels is determined by the transmission information weights of the plurality of transmission channels.
In one embodiment of the application, the spread data block G is received via a plurality of transmission channels c Is obtained by performing redundancy coding on an original data block with the data length of G, performing data expansion on the original data block with the data length of G by the redundancy coding, and expanding the data block G after expansion c Is 1+ epsilon times the original size, where epsilon is the set decoding overhead. For example, in this embodiment, the decoding overhead may be set to be epsilon=45%, and the data block G is extended after extension c Is 1.45 times the size of the original data block. By adding a non-rate code, the reliability can be improved by increasing redundancy, similar to the use of channel coding. Original data is encoded by the rateless code, and the code with the length of (1+epsilon) G is generated. For the receiving end, as long as any (1+epsilon) G data length is received, namely enough data is received, all original information can be successfully recovered with high probability, and the channel transmission has the self-adaptive characteristic by performing the code-free coding.
S620, decoding and combining the parallel transmission expansion data blocks to obtain original data blocks.
In one embodiment of the present application, the extended data block transmitted in parallel is decoded and combined to obtain an original data block, where decoding is a process that a receiving end restores a received symbol or code to information, in this embodiment, the receiving end may decode and combine the extended data block according to a received repeated PDCP PDU (Protocol Data Unit ), where the PDU may include information from an upper layer and information attached to an entity of a current layer, and the PDU is constructed by a higher layer of a protocol stack and may be transferred to a next lower layer. The receiving end can transmit the protocol stacks from bottom to top, and separate out related information in the PDU at each layer of the protocol stacks. Each layer is attached to the information of the PDU, and processes the data segment by stripping the header from the transport layer segment, performing protocol data detection to determine the data of the protocol segment as part of the data of the transport layer segment, and performing flag verification and stripping. And simultaneously data processing the data segments, wherein for a header portion of the received protocol data unit, the received header portion is utilized to determine the number of bytes of data to be stored in the application space. In this embodiment, after decoding and combining processing and successful demodulation, an ACK (Acknowledge character, acknowledgement character) is sent to perform acknowledgement, and in data communication, the receiving end acknowledges that the sent data has been acknowledged by an ACK sent to the sending end.
In one embodiment of the present application, the demodulation mode may be adaptively selected according to the channel quality, and the code may be encoded according to the performance of the adopted code and the length of the information bits in the codeword, so as to determine the mutual information accumulated by the decoder when the desired decoding error performance is reached. And calculating average mutual information of demodulation bits of each demodulation mode under different signal-to-noise ratios, and obtaining corresponding code word lengths of the non-rate code decoding under each demodulation mode when the different signal-to-noise ratios are obtained according to the mutual information which needs to be accumulated by the decoder. The maximum value of the allowed decoding codeword length is determined according to the decoding complexity constraint. According to the obtained data, according to the priority order of each mode from high to low, the demodulation mode at different signal-to-noise ratios is determined under the condition that the length of the decoding code word does not exceed the maximum value. The priority order in this embodiment may be set by using information transmission weights, for example, a transmission information weight classification manner may be adopted, so that the information transmission weights of each channel respectively correspond to different priorities, so as to determine demodulation modes in different signal-to-noise ratios according to the priorities.
In one embodiment of the application, a data length of an extended data block received by a transmission channel is obtained; when the data length is (1+epsilon), the data of the transmission channel is judged to be completely received, epsilon is the decoding overhead of performing the non-rate code coding on the original data block, the essence of the channel coding is to increase the reliability of communication, so that the data transmission efficiency is improved, and the reduction of the error rate is the task of the channel coding. The channel coding process in this embodiment is to insert some non-rate codes into the original data block, so as to achieve the purpose of error judgment and correction at the receiving end.
Fig. 7 shows a block diagram of a data transmission apparatus in an embodiment of the present application.
As shown in fig. 7, the data transmission apparatus 700 includes:
the encoding module 710 is configured to perform redundancy encoding on an original data block to be transmitted to obtain an extended data block;
a weight module 720, configured to obtain transmission information weights of the plurality of transmission channels, where the transmission information weights are used to determine transmission data amounts of each of the plurality of transmission channels;
and a sending module 730, configured to allocate the extended data blocks to the multiple transmission channels according to the transmission information weights, so as to transmit the extended data blocks in parallel through the multiple transmission channels.
In one embodiment of the present application, the encoding module 710 performs redundancy encoding on the original data block G to be transmitted, performs data expansion on the original data block G by the redundancy encoding, and expands the data block G after expansion c Is 1+ epsilon times the original size, where epsilon is the set decoding overhead. In the present embodiment, the coding module 710 performs the coding for the data sent from the PDCP to the RLC entityThe original data block is coded with a rateless code. By adding a non-rate code, the reliability can be improved by increasing redundancy, similar to the use of channel coding. The data with the original data length of G is encoded by the rateless code, and the code with the length of (1+epsilon) G is generated. The essence of channel coding is to increase the reliability of communication, so it is a task of channel coding to increase the data transmission efficiency and reduce the bit error rate. The channel coding process performed by the coding module 710 in this embodiment is to insert some non-rate codes into the original data block, so as to achieve the purpose of error determination and correction at the receiving end.
In one embodiment of the present application, the weight module 720 obtains transmission information weights of a plurality of transmission channels, where the transmission information weights are used to determine transmission data amounts of respective channels of the plurality of transmission channels. In this embodiment, the weight module 720 performs channel quality scoring on the plurality of transmission channels, and then obtains the transmission information weight of each transmission channel based on the positive correlation between the channel quality score and the transmission data amount of each transmission channel. The channel quality score and the amount of data transmitted are in a linear increasing relationship, and as the channel quality score of a transmission channel is higher, the amount of data which can be transmitted is larger, so that more information can be transmitted by a Cell with good channel conditions. The transmitting module 730 allocates the spread data blocks to the plurality of transmission channels according to the information transmission weights set through the weight module 720, and transmits the spread data blocks in parallel through the plurality of transmission channels.
Fig. 8 is a block diagram showing another data transmission apparatus in the embodiment of the present application;
as shown in fig. 8, the data transmission apparatus 800 includes:
a receiving module 810, configured to receive, through a plurality of transmission channels, an extended data block transmitted in parallel, where the extended data block is obtained by performing redundancy encoding on an original data block to be transmitted, and a transmission data amount of each of the plurality of transmission channels is determined by a transmission information weight of the plurality of transmission channels;
And the decoding and combining module 820 is configured to decode and combine the extended data blocks transmitted in parallel to obtain the original data block.
In one embodiment of the present application, the receiving module 810 receives extended data blocks transmitted in parallel through a plurality of transmission channels, where the extended data blocks are obtained by performing redundancy coding on original data blocks to be transmitted, and the transmission data amount of each of the plurality of transmission channels is determined by the transmission information weights of the plurality of transmission channels.
In one embodiment of the present application, the receiving module 810 receives the spread data blocks transmitted in parallel through a plurality of transmission channels, and can increase reliability by increasing redundancy through the addition of a non-rate code, similar to the use of channel coding. Original data is encoded by the rateless code, and the code with the length (1+epsilon) is generated. For the data transmission device 800, as long as any (1+epsilon) data length is received, that is, enough data is received, all original information can be successfully recovered with high probability, and the channel transmission is self-adaptive by performing the code-free coding.
In one embodiment of the present application, the decoding and merging module 820 decodes and merges the parallel transmitted extended data blocks to obtain the original data blocks. Decoding is the process by which the recipient restores the received symbols or codes to information, and in this embodiment, the decoding and combining module 820 may decode and combine the extended data blocks according to the received duplicate PDCP PDUs (Protocol Data Unit, protocol data units), which may contain information from the upper layer and information appended by the entity of the current layer, and which are built by the upper layer of the protocol stack and may be transferred to the next lower layer. The receiving end can transmit the packets from bottom to top through the protocol stack and separate out the relevant information in the PDU at each layer of the protocol stack. And decoding and combining, and after successful demodulation, sending ACK to confirm, wherein the sent data is confirmed to be received without errors.
In one embodiment of the present application, the decoding merging module 820 may adaptively select a demodulation mode according to channel quality, and perform code encoding of the code without rate may determine mutual information accumulated by the decoder when reaching a desired decoding error performance according to the performance of the code without rate and the length of information bits in the codeword. And calculating average mutual information of demodulation bits of each demodulation mode under different signal-to-noise ratios, and obtaining corresponding code word lengths of the non-rate code decoding under each demodulation mode when the different signal-to-noise ratios are obtained according to the mutual information which needs to be accumulated by the decoder. The maximum value of the allowed decoding codeword length is determined according to the decoding complexity constraint. According to the obtained data, according to the priority order of each mode from high to low, the demodulation mode in different signal-to-noise ratios is determined under the condition that the length of the decoding code word does not exceed the maximum value. The priority order in this embodiment may be set by using information transmission weights, for example, a transmission information weight classification manner may be adopted, so that the information transmission weights of each channel respectively correspond to different priorities, so as to determine demodulation modes in different signal-to-noise ratios according to the priorities.
Fig. 9 is a block diagram of a data transmission system according to an exemplary embodiment of the present application.
As shown in fig. 9, the data transmission system includes a data transmitting apparatus 901 and a data receiving apparatus 902.
The data transmission apparatus 901 includes:
the encoding module 903 is configured to perform redundancy encoding on an original data block to be transmitted to obtain an extended data block;
a weight module 904, configured to obtain transmission information weights of a plurality of transmission channels, where the transmission information weights are used to determine transmission data amounts of each of the plurality of transmission channels;
a sending module 905, configured to allocate the extended data blocks to the multiple transmission channels according to the transmission information weights, so as to transmit the extended data blocks in parallel through the multiple transmission channels.
The data receiving apparatus 902 includes:
a receiving module 906, configured to receive, through a plurality of transmission channels, an extended data block that is transmitted in parallel, where the extended data block is obtained by performing redundancy encoding on an original data block to be transmitted, and a transmission data amount of each channel in the plurality of transmission channels is determined by a transmission information weight of the plurality of transmission channels;
and the decoding and combining module 907 is configured to decode and combine the extended data blocks transmitted in parallel to obtain the original data block.
In one embodiment of the present application, the data transmitting apparatus 901 may be configured as the data transmitting apparatus 700 to implement grouping of the original data block and signal transmission according to the information transmission weight, the data receiving apparatus 902 may be configured as the data transmitting apparatus 800, and perform decoding and combining processing on the received data, and after successful demodulation, the ACK acknowledgement is transmitted, and the data transmitting apparatus 901 and the data receiving apparatus 902 may perform signal transmission by the method in the above embodiment, which will not be described herein.
It should be noted that, the data transmission device and system provided in the foregoing embodiments and the data transmission method provided in the foregoing embodiments belong to the same concept, and the specific manner in which each module and unit perform the operation has been described in detail in the method embodiment, which is not repeated herein. In practical application, the data transmission device provided in the above embodiment may distribute the functions to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above, which is not limited herein.
Fig. 10 shows a schematic diagram of a hardware structure of a terminal device suitable for implementing an embodiment of the application.
In one embodiment of the application, the apparatus may include: one or more processors; and one or more machine readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform the method described in fig. 2. In practical application, the device may be used as a terminal device or a server, and the embodiment of the present application is not limited to a specific device. As shown in fig. 10, the terminal device may include: an input device 1100, a first processor 1101, an output device 1102, a first memory 1103 and at least one communication bus 1104. The communication bus 1104 is used to enable communication connections between the elements. The first memory 1103 may comprise a high-speed RAM memory or may further comprise a non-volatile memory NVM, such as at least one magnetic disk memory, and various programs may be stored in the first memory 1103 for performing various processing functions and implementing the method steps of the present embodiment.
In one embodiment of the present application, the first processor 1101 may be implemented, for example, as a central processing unit (Central Processing Unit, abbreviated as CPU), an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a controller, a microcontroller, a microprocessor, or other electronic components, and the first processor 1101 is coupled to the above-described input device 1100 and output device 1102 through a wired or wireless connection.
In one embodiment of the application, the input device 1100 may comprise a variety of input devices, for example, may comprise at least one of a user-oriented user interface, a device-oriented device interface, a programmable interface of software. Optionally, the device interface facing the device may be a wired interface for data transmission between devices, or may be a hardware insertion interface (such as a USB interface, a serial port, etc.) for data transmission between devices; alternatively, the user-oriented user interface may be, for example, a user-oriented control key, a voice input device for receiving voice input, and a touch-sensitive device (e.g., a touch screen, a touch pad, etc. having touch-sensitive functionality) for receiving user touch input by a user; optionally, the programmable interface of the software may be, for example, an entry for a user to edit or modify a program, for example, an input pin interface or an input interface of a chip, etc.; the output device 1102 may include a display, sound, or the like. The processor of the terminal device may include a function for executing the above-mentioned user migration processing module, and specific functions and technical effects may be referred to the above-mentioned embodiments and are not described herein again.
Fig. 11 shows a schematic diagram of a hardware structure of another electronic device.
In one embodiment of the application, FIG. 11 is a specific embodiment of FIG. 10 in the implementation. As shown in fig. 11, the terminal device of the present embodiment may include a second processor 1201 and a second memory 1202. The second processor 1201 executes the computer program code stored in the second memory 1202 to implement the method described in fig. 2 in the above embodiment. The second memory 1202 is configured to store various types of data to support operations at the terminal device. Examples of such data include instructions, such as messages, signaling, etc., for any application or method operating on the terminal device. The second memory 1202 may include a random access memory (random access memory, simply RAM) and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. Optionally, a second processor 1201 is provided in the processing assembly 1200. The terminal device may further include: a communication component 1203, a power component 1204, a multimedia component 1205, a voice component 1206, an input/output interface 1207, and/or a sensor component 1208. The components and the like specifically included in the terminal device are set according to actual requirements, which are not limited in this embodiment. The processing component 1200 generally controls the overall operation of the terminal device. The processing assembly 1200 may include one or more second processors 1201 to execute instructions to perform all or part of the steps in the data processing methods described above. Further, the processing component 1200 may include one or more modules that facilitate interactions between the processing component 1200 and other components. For example, the processing component 1200 may include a multimedia module to facilitate interaction between the multimedia component 1205 and the processing component 1200. The power supply component 1204 provides power to the various components of the terminal device. Power supply components 1204 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for terminal devices. The multimedia component 1205 includes a display screen that provides an output interface between the terminal device and the user. In some embodiments, the display screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the display screen includes a touch panel, the display screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. The voice component 1206 is configured to output and/or input voice signals. For example, the voice component 1206 includes a Microphone (MIC) configured to receive external voice signals when the terminal device is in an operational mode, such as a voice recognition mode. The received voice signals may be further stored in the second memory 1202 or transmitted via the communication component 1203. In some embodiments, the voice component 1206 further includes a speaker for outputting voice signals. The input/output interface 1207 provides an interface between the processing assembly 1200 and peripheral interface modules, which may be click wheels, buttons, and the like. These buttons may include, but are not limited to: volume button, start button and lock button. The sensor assembly 1208 includes one or more sensors for providing status assessment of various aspects for the terminal device. For example, the sensor assembly 1208 may detect an on/off state of the terminal device, a relative positioning of the assembly, and the presence or absence of user contact with the terminal device. The sensor assembly 1208 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact, including detecting the distance between the user and the terminal device. In some embodiments, the sensor assembly 1208 may also include a camera or the like. The communication component 1203 is configured to facilitate communication between the terminal device and other devices in a wired or wireless manner. The communication component 1203, the voice component 1206, and the input/output interface 1207, the sensor component 1208 referred to in the fig. 11 embodiment may all be implemented as input devices in the fig. 10 embodiment.
Another aspect of the present embodiment also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the image processing method as described above. The computer-readable storage medium may be included in the electronic device described in the above embodiment or may exist alone without being incorporated in the electronic device.
It should be noted that, the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium may be, for example, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-Only Memory (ROM), an erasable programmable read-Only Memory (Erasable Programmable Read Only Memory, EPROM), flash Memory, an optical fiber, a portable compact disc read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present application, a computer-readable signal medium may comprise a data signal propagated in baseband or as part of a carrier wave, with a computer-readable computer program embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. A computer program embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. Where each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functions of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
The units involved in the embodiments of the present application may be implemented by software, or may be implemented by hardware, and the described units may also be provided in a processor. Wherein the names of the units do not constitute a limitation of the units themselves in some cases.
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functions of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, a touch terminal, or a network device, etc.) to perform the method according to the embodiments of the present application.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains.
It should be understood that the foregoing is only illustrative of the preferred embodiments of the present application and is not intended to limit the embodiments of the present application, and that various changes and modifications can be made herein without departing from the spirit and scope of the application as defined by the appended claims.

Claims (8)

1. A data transmission method, comprising:
redundancy coding is carried out on the original data block to be transmitted to obtain an extended data block;
information inquiry is carried out on a plurality of transmission channels to obtain downlink control information, wherein the downlink control information comprises uplink and downlink resource allocation fields of each transmission channel; the resource allocation field comprises at least one of a frequency domain resource allocation indication field, a time domain resource allocation indication field, an HARQ indication field, a code block group transmission information field and a code block group emptying information field;
Normalizing the uplink and downlink resource allocation field of each transmission channel, and grading the channel quality by taking the processed data value as each channel;
determining a transmission information weight of each transmission channel based on the channel quality of each transmission channel, wherein the transmission information weight is used for determining the transmission data quantity of each channel in the plurality of transmission channels, and the transmission information weight is positively correlated with the transmission data quantity;
and distributing the extended data blocks to the plurality of transmission channels according to the transmission information weight so as to transmit the extended data blocks in parallel through the plurality of transmission channels.
2. The data transmission method according to claim 1, wherein the redundancy encoding of the original data block to be transmitted comprises:
and performing rateless code encoding on the original data block with the data length G based on preset decoding overhead epsilon to obtain an extended data block with the data length of (1+epsilon) G.
3. A data transmission method, comprising:
receiving an extended data block transmitted in parallel through a plurality of transmission channels, wherein the extended data block is obtained by performing redundancy coding on an original data block to be transmitted, and the transmission data quantity of each channel in the plurality of transmission channels is determined by the transmission information weights of the plurality of transmission channels; the transmission information weight of each transmission channel is determined based on the channel quality of each transmission channel, the channel quality is indicated by a channel quality score, the channel quality score is a data value obtained by normalizing the uplink and downlink resource allocation fields of each transmission channel, and the resource allocation fields comprise at least one of a frequency domain resource allocation indication field, a time domain resource allocation indication field, an HARQ indication field, a code block group transmission information field and a code block group clearing information field;
And decoding and combining the parallel transmitted extended data blocks to obtain the original data blocks.
4. A data transmission method according to claim 3, further comprising:
acquiring the data length of an extended data block received by a transmission channel;
and when the data length is (1+epsilon) G, judging that the data of the transmission channel is completely received, wherein epsilon is the decoding overhead of performing the non-rate code encoding on the original data block with the data length of G.
5. A data transmission apparatus, comprising:
the coding module is used for carrying out redundancy coding on the original data block to be transmitted to obtain an extended data block;
the weight module is used for inquiring information of a plurality of transmission channels to obtain downlink control information, wherein the downlink control information comprises uplink and downlink resource allocation fields of each transmission channel; the resource allocation field comprises at least one of a frequency domain resource allocation indication field, a time domain resource allocation indication field, an HARQ indication field, a code block group transmission information field and a code block group emptying information field;
the weight module is further configured to normalize the uplink and downlink resource allocation fields of each transmission channel, and score the channel quality of each channel with the processed data value as the channel quality;
The weight module is further configured to determine a transmission information weight of each transmission channel based on a channel quality of each transmission channel, where the transmission information weight is used to determine a transmission data amount of each channel in the plurality of transmission channels, and the transmission information weight is positively correlated with the transmission data amount;
and the sending module is used for distributing the extended data blocks to the transmission channels according to the transmission information weight so as to transmit the extended data blocks in parallel through the transmission channels.
6. A data transmission system is characterized by comprising a data transmitting device and a data receiving device,
the data transmission device includes:
the coding module is used for carrying out redundancy coding on the original data block to be transmitted to obtain an extended data block;
weight module for
Information inquiry is carried out on a plurality of transmission channels to obtain downlink control information, wherein the downlink control information comprises uplink and downlink resource allocation fields of each transmission channel; the resource allocation field comprises at least one of a frequency domain resource allocation indication field, a time domain resource allocation indication field, an HARQ indication field, a code block group transmission information field and a code block group emptying information field;
The weight module is further configured to normalize the uplink and downlink resource allocation fields of each transmission channel, and score the channel quality of each channel with the processed data value as the channel quality;
the weight module is further configured to determine a transmission information weight of each transmission channel based on a channel quality of each transmission channel, where the transmission information weight is used to determine a transmission data amount of each channel in the plurality of transmission channels, and the transmission information weight is positively correlated with the transmission data amount;
a transmission module, configured to allocate the extended data block to the plurality of transmission channels according to the transmission information weight, so as to transmit the extended data block in parallel through the plurality of transmission channels;
the data receiving apparatus includes:
the receiving module is used for receiving the extended data blocks transmitted in parallel through a plurality of transmission channels, wherein the extended data blocks are obtained by performing redundancy coding on the original data blocks to be transmitted, and the transmission data quantity of each channel in the plurality of transmission channels is determined by the transmission information weights of the plurality of transmission channels; the transmission information weight of each transmission channel is determined based on the channel quality of each transmission channel, the channel quality is indicated by a channel quality score, the channel quality score is a data value obtained by normalizing the uplink and downlink resource allocation fields of each transmission channel, and the resource allocation fields comprise at least one of a frequency domain resource allocation indication field, a time domain resource allocation indication field, an HARQ indication field, a code block group transmission information field and a code block group clearing information field;
And the decoding and merging module is used for decoding and merging the parallel transmitted extended data blocks to obtain the original data blocks.
7. An electronic device, comprising:
one or more processors;
storage means for storing one or more programs which, when executed by the one or more processors, cause the electronic device to implement the data transmission method of any of claims 1 to 4.
8. A computer readable storage medium having stored thereon computer readable instructions which, when executed by a processor of a computer, cause the computer to perform the data transmission method of any of claims 1 to 4.
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