CN107154835B - Data sending method and device - Google Patents

Data sending method and device Download PDF

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Publication number
CN107154835B
CN107154835B CN201710314154.1A CN201710314154A CN107154835B CN 107154835 B CN107154835 B CN 107154835B CN 201710314154 A CN201710314154 A CN 201710314154A CN 107154835 B CN107154835 B CN 107154835B
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cbg
terminal
time
frequency resource
data
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CN107154835A (en
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李明菊
张云飞
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1806—Go-back-N protocols

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a method and a device for sending data, wherein the method comprises the following steps: the base station sends a first TB to the terminal on a first time-frequency resource; in the process of sending the first TB, if a second time-frequency resource in the first time-frequency resource is allocated to another terminal, the base station sends a second TB to the terminal, where the second TB at least includes part of data of the first TB that the base station plans to send on the second time-frequency resource. By adopting the embodiment of the invention, the problem of how to send the data which is planned to be sent on the second time frequency resource by the terminal when other terminals occupy the second time frequency resource of the terminal can be solved, and the transmission efficiency of the data is improved.

Description

Data sending method and device
Technical Field
The present invention relates to the field of electronics and communications, and in particular, to a method and an apparatus for transmitting data.
Background
In order to improve the resource utilization efficiency and meet the delay requirement of the URLLC service, the UE (UE) agreeing to the high-reliability and Low-Latency communication (URLLC) service in the current third Generation Partnership Project (3 GPP) discussion may occupy the resources of the UE that is being scheduled and is in enhanced mobile broadband (eMBB).
In the prior art, a Transport Block (TB) is divided into a plurality of Code Blocks (CBs), the CBs form a Code Block Group (CBG) in a group form, and the CBG is used as a basic transmission unit to transmit data contained in resources. However, since some time-frequency resources allocated to the CBG of the eMBB may be occupied by the user equipment of the URLLC service, how to transmit data scheduled to be transmitted on the occupied time-frequency resources is a problem that is being studied by those skilled in the art.
Disclosure of Invention
Based on this, in order to solve the technical problem of how to send data of the eMBB user scheduled to be sent on the occupied time-frequency resource after the user equipment executing the eMBB service occupies a part of resources by the user equipment of the URLLC service, a data sending method is particularly provided.
A method of transmitting data, comprising:
the base station sends a first TB to the terminal on a first time-frequency resource;
in the process of sending the first TB, if a second time-frequency resource in the first time-frequency resource is allocated to another terminal, the base station sends a second TB to the terminal, where the second TB at least includes part of data of the first TB that the base station plans to send on the second time-frequency resource. .
In one embodiment, the second TB is a part of data of the first TB that the base station plans to transmit on the second time-frequency resource; or the like, or, alternatively,
the second TB is a CB to which partial data of the first TB, which is scheduled to be sent by the base station on the second time-frequency resource, belongs; or the like, or, alternatively,
the second TB comprises a CBG to which partial data of the first TB planned to be sent by the base station on the second time-frequency resource belongs.
In one embodiment, the method further comprises:
if the base station does not receive the HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal, the base station sends a second TB to the terminal, which specifically includes: the base station sends partial data of the first TB planned to be sent on the second time-frequency resource by the base station, or a CB (broadcast channel) to which the partial data belongs, or a CBG (broadcast channel) to which the partial data belongs to the terminal; or the like, or, alternatively,
if the base station receives HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal, and if the HARQ feedback characters of the CBGs to which data that is not sent on the second time-frequency resource belongs are successful, the base station sends the second TB to the terminal, which specifically includes: and the base station sends partial data of the first TB planned to be sent on the second time-frequency resource by the base station, or the CB to which the partial data belongs, or the CBG to which the partial data belongs to the terminal.
In one embodiment, the method further comprises:
if the base station receives HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal, and if at least one bit in the HARQ feedback characters of the CBGs to which data which is not sent on the second time-frequency resource belongs is unsuccessful, where one CBG corresponds to one bit, the base station sends the second TB to the terminal, which specifically includes: and the base station plans the CBG to which the partial data of the first TB belongs, which is sent on the second time-frequency resource.
In one embodiment, the second TB is a part of data of the first TB that the base station plans to transmit on the second time-frequency resource, and the method further includes:
and the base station sends a downlink control signaling to the terminal, wherein the downlink control signaling is used for indicating the terminal to identify the corresponding relation between the CBG contained in the second TB and the CBG contained in the first TB, the corresponding relation between the CB contained in each CBG contained in the second TB and the CB contained in the first TB, and the corresponding relation between the sub-code block CB part contained in each CBG contained in the second TB and the sub-code block CB part contained in the CB contained in the first TB.
In one embodiment, the second TB is a part of data of the first TB that the base station plans to transmit on the second time-frequency resource, and the method further includes:
and the base station sends a downlink control signaling to the terminal, wherein the downlink control signaling is used for indicating the terminal to identify the corresponding relation between the CBG contained in the second TB and the CBG contained in the first TB, and the corresponding relation between the CB contained in each CBG contained in the second TB and the CB contained in each CBG contained in the first TB.
In one embodiment, the second TB includes a CBG to which the partial data of the first TB that the base station plans to transmit on the second time-frequency resource belongs, and the method further includes:
and the base station sends a downlink control signaling to the terminal, wherein the downlink control signaling is used for indicating the terminal to identify the corresponding relation between the CBG contained in the second TB and the CBG contained in the first TB.
In addition, in order to solve the technical problem of how to transmit the data which is planned to be transmitted on the second time-frequency resource by the terminal when the other terminal occupies the second time-frequency resource of the terminal, a data transmitting device is provided.
An apparatus for transmitting data, comprising:
a first transmission module, configured to send a first TB to a terminal on a first time-frequency resource;
a second transmission module, configured to send a second TB to the terminal if a second time-frequency resource in the first time-frequency resource is allocated to another terminal in a sending process of the first TB, where the second TB at least includes part of data of the first TB scheduled to be sent on the second time-frequency resource.
In one embodiment, the second TB is a part of data of the first TB scheduled to be transmitted on the second time-frequency resource; or
The second TB is a CB to which part of data of the first TB planned to be sent on the second time-frequency resource belongs; or
The second TB includes a CBG to which partial data of the first TB scheduled to be transmitted on the second time-frequency resource belongs.
In one embodiment, the apparatus further includes a determining module, configured to determine, before sending the second TB to the terminal, whether HARQ feedback characters corresponding to CBGs in the first TB sent by the terminal are received;
the second transmission module is specifically configured to, when the determination module determines that the partial data of the first TB or the CB to which the partial data belongs or the CBG to which the partial data belongs, send, to the terminal, the partial data of the first TB scheduled to be sent on the second time-frequency resource; or the like, or, alternatively,
the second transmission module is specifically configured to, when the determination module determines that the HARQ feedback character of the CBG to which the data that is not sent on the second time-frequency resource belongs is successful, send the second TB to the terminal, where the second TB is partial data of the first TB, or a CB to which the partial data belongs, or a CBG to which the partial data belongs, that is scheduled to be sent on the second time-frequency resource.
In one embodiment, the apparatus further includes a determining module, configured to determine, before sending the second TB to the terminal, whether HARQ feedback characters corresponding to CBGs in the first TB sent by the terminal are received;
the second transmission module is specifically configured to, when the determining module determines that at least one bit in a HARQ feedback character of a CBG to which data that is not sent on the second time-frequency resource belongs is unsuccessful, send the second TB to the terminal, where one CBG corresponds to one bit, and the method specifically includes: and planning the CBG to which the partial data of the first TB belongs, which is sent on the second time-frequency resource.
In one embodiment, the second transmission module is further configured to send a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between CBGs included in the second TB and CBGs included in the first TB, a correspondence between CBs included in each CBG included in the second TB and CBs included in the first TB, and a correspondence between sub-code blocks CB part in CBs included in each CBG included in the second TB and sub-code blocks CB part in CBs included in the first TB.
In one embodiment, the second transmission module is further configured to send a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between CBGs included in the second TB and CBGs included in the first TB, and a correspondence between CBs included in each CBG included in the second TB and CBs included in each CBG included in the first TB.
In one embodiment, the second transmission module is further configured to send a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between a CBG included in the second TB and a CBG included in the first TB.
The embodiment of the invention has the following beneficial effects:
after the data transmission method and the data transmission device are adopted, when the base station finds that the service of other terminals arrives in the process of transmitting the first TB to the terminal on the first time-frequency resource, the base station allocates the second time-frequency resource in the first time-frequency resource to the other terminals, and then the base station needs to transmit the second TB to the terminal. The second TB at least comprises the partial data of the first TB scheduled to be sent on the second time frequency resource by the base station, so the technical problem of how to send the partial data of the first TB scheduled to be sent on the second time frequency resource by the base station is solved. And since the transmitted data is the same as the data scheduled to be transmitted on the second time-frequency resource in the first TB before, the merging and decoding are facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
fig. 1 is a schematic flow chart of a data transmission method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a URLLC service occupying a second time-frequency resource according to the embodiment of the present invention;
fig. 3 is a schematic flow chart of another data transmission method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a data transmitting apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a computer device that executes a data transmission method in one embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the technical problem that a base station plans how to transmit part of data of an eMMC service transmitted on occupied time frequency resources after the user equipment executing the eMMC service is occupied by the user equipment of the URLLC service, in an embodiment, a data transmission method is provided.
It should be noted that, in this embodiment, data transmission is performed based on a Transport Block (TB), where the TB includes: at least one Code Block Group (CBG) including at least one Code Block (CB). That is, the TB is divided into a plurality of CBs, and the plurality of CBs are grouped to obtain a CBG through which data is transmitted.
Specifically, as shown in fig. 1, a data transmission method includes:
step S102: the base station transmits a first TB to the terminal on a first time-frequency resource.
In this embodiment, the terminal may specifically be a personal computer, a server computer, a handheld or laptop, a consumer electronic device, a mobile device (such as a smart phone, a tablet computer, a media player, and the like), a multiprocessor system, and other terminal devices, and may also be a base station. The embodiments of the present invention are not limited to the above-described representation of the terminal.
In this embodiment, the base station allocates N time-frequency resources (english: resource block, RB) of 1 slot to the terminal, and configures and sends data and downlink control signaling related to the terminal in a frame structure slot1, so that the first TB is sent through multiple time-frequency resources, and the time-frequency resource allocated for sending the first TB is used as the first time-frequency resource.
Step S104: and in the process of sending the first TB, if second time-frequency resources in the first time-frequency resources are allocated to other terminals, the base station sends a second TB to the terminal.
And receiving the services of other terminals in the sending process of the first TB, and allocating the second time-frequency resource in the first time-frequency resource to other terminals by the base station in order to meet the time delay requirements of the services of other terminals. That is, part of the symbols in the first time-frequency resource are allocated to other terminals, that is, all or part of the N RBs in the second time-frequency resource do not transmit data or downlink control signaling of the terminal any more during this part of the symbol time, but transmit data or downlink control signaling of other terminals.
In this embodiment, the second TB includes at least a part of data of the first TB that the base station plans to transmit on the second time-frequency resource. That is to say, the second TB includes the part of the data scheduled to be sent on the second time frequency resource by the base station in the first TB, so that the problem of how to send the part of the data scheduled to be sent on the occupied second time frequency resource of the first TB is solved by sending the second TB.
As a specific embodiment, the URLLC service shown in fig. 2 occupies a time-frequency resource map in the TBs of the eMBB service, where the TB of the eMBB service includes 9 CBs, CB0-CB8, and every three CBs are taken as one CBG to obtain 3 CBGs, that is, CB #0, and CB #1 and CB #2 are taken as CBG # 1; namely, CB #3, CB #4 and CB #5 are CBG # 2; namely, CB #6, CB #7 and CB #8 are CBG # 3. Due to the arrival of the URLLC service, the base station allocates the second time-frequency resources in the first time-frequency resources to the other terminals performing the URLLC service, and the base station plans to transmit the data of CB #4part2, CB #5, CB #6, and CB #7part1 of the first TB on the time-frequency resources allocated to the other terminals performing the URLLC service, so that the second TB at least includes the data of CB #4part2, CB #5, CB #6, and CB #7part1 of the first TB.
The present invention does not limit the service executed by the terminal, and preferably, the terminal executes the eMBB service and the other terminals execute the URLLC service. It should be noted that there may be a plurality of other terminals.
In this embodiment, the second TB is partial data of the first TB that the base station plans to send on the second time-frequency resource; or the second TB is a CB to which the partial data of the first TB, which is scheduled to be sent by the base station on the second time-frequency resource, belongs; or the second TB comprises a CBG to which partial data of the first TB planned to be sent by the base station on the second time-frequency resource belongs.
Since a plurality of CBs form a CBG, and a CB includes a plurality of bit data, we refer to a part of the bit data in the CB as a subcode block, such as a CB part. As shown in fig. 2, CB #4 contains CB #4-part1 and CB #4part2, but it is not fixed how many bits each of the specific CB #4part1 and CB #4part2 contains. For example, the entire CB #4 contains 8000 bits, while CB #4-part1 can be 3000 bits, in which case CB #4part2 is 5000 bits; while CB #4part1 may be 4000 bits, CB #4part2 is 4000 bits.
That is to say, the second TB may include data that is scheduled by the base station in the first TB to be transmitted on the second time-frequency resource, and this data may only include data that is scheduled to be transmitted on the second time-frequency resource in the first TB, may only include a CB to which the data that is scheduled to be transmitted on the second time-frequency resource in the first TB belongs, and may also include a CBG to which the data that is scheduled to be transmitted on the second time-frequency resource in the first TB belongs.
In order to improve the transmission efficiency of the base station planning to send data on the second time-frequency resource, the data which is planned to be sent on the second time-frequency resource by the base station in the first TB is sent with the least data quantity as possible. The downlink control signaling should indicate that the CBG, CB, or CBpart scheduled to be transmitted by the first TB on the second time-frequency resource is included in the transmission basic unit CBG in the second TB. Since the transmitted data is the same as the data previously scheduled to be transmitted on the second time-frequency resource in the first TB, joint decoding is facilitated.
Optionally, the base station sends a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between a CBG included in the second TB and a CBG included in the first TB, a correspondence between a CB included in each CBG included in the second TB and a CB included in the CBG included in the first TB, and a correspondence between a sub-code block CBpart included in each CBG included in the second TB and a sub-code block CB part included in a CB included in the CBG included in the first TB. That is to say, in order to send only the data scheduled to be sent on the occupied time frequency resource in the first TB, the corresponding relationship between the second TB and the data scheduled to be sent on the second time frequency resource by the first TB may be sent through the downlink control signaling to send the data, so as to further improve the efficiency of data transmission.
For example, suppose that the second TB includes CB #4part2, CB #5, CB #6, and CB #7part1 of the data scheduled to be transmitted on the second time-frequency resource in the first TB. And the second TB re-groups the data into CB groups and CBG groups, for example, the data are divided into 6 CBs, CB #0-CB #5, the first three CBs are CBG #1, and the last three CBs are CBG # 2. The following corresponding relations are provided:
CB #0 of CBG #1 of the second TB corresponds to CB #4part2 of CBG #2 of the first TB;
CB #1 and CB #2 of CBG #1 of the second TB correspond to CB #5 of CBG #2 of the first TB;
CB #3 and CB #4 of CBG #2 of the second TB correspond to CB #6 of CBG #3 of the first TB;
CB #5 of CBG #2 of the second TB corresponds to CB #7part1 of CBG #3 of the first TB.
The downlink control signaling sent by the base station to the terminal needs to indicate the corresponding relationship, and the terminal knows the corresponding relationship between the second TB internal data and the first TB internal CB #4-part2, CB #5, CB #6 and CB #7-part1 according to the downlink control signaling, so as to implement the merging and decoding of the first TB data and the second TB data, thereby improving the transmission efficiency of the data.
Optionally, the base station sends a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between CBGs included in the second TB and CBGs included in the first TB, and a correspondence between CBs included in each CBG included in the second TB and CBs included in each CBG included in the first TB. That is to say, in order to transmit data scheduled to be transmitted on the second time frequency resource in the first TB, the second TB includes all data in the CB to which the data belongs, and the data is transmitted by sending the corresponding relationship between the second TB and the data scheduled to be transmitted on the second time frequency resource by the first TB through the downlink control signaling, so that the efficiency of transmitting data is improved while the DCI downlink control signaling is reduced.
For example, assuming that the second TB includes CB #4part2, CB #5, CB #6, and CB #7part1, which are data of the first TB scheduled to be transmitted on the second time-frequency resource, the second TB will transmit data of the first TB, which includes CB #4part1 and CB #7part2, which includes CB #4part2, CB #5, CB #6, and CB #7 part. Then the second TB divides the data into four CBs, CB #0-CB #3, the first two CBs being CBG #1 and the last two CBs being CBG # 2. And has the following corresponding relation,
CB #0 of CBG #1 of the second TB corresponds to CB #4 of CBG #2 of the first TB;
CB #1 of CBG #1 of the second TB corresponds to CB #5 of CBG #2 of the first TB;
CB #2 of CBG #2 of the second TB corresponds to CB #6 of CBG #3 of the first TB;
CB #3 of CBG #2 of the second TB corresponds to CB #7 of CBG #3 of the first TB.
The downlink control signaling sent by the base station to the terminal needs to indicate the corresponding relationship, and the terminal knows the corresponding relationship between the second TB internal data and the first TB internal CB #4, CB #5, CB #6 and CB #7 according to the downlink control signaling, so as to implement the merging and decoding of the first TB data and the second TB data, thereby reducing the DCI signaling indication and improving the transmission efficiency of the data.
Optionally, the base station sends a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between a CBG included in the second TB and a CBG included in the first TB. That is, in order to transmit data in the first TB that is scheduled to be transmitted on the second time-frequency resource, the second TB contains all the data within the CBG to which the data belongs. And sending the corresponding relation between the second TB and the data planned to be sent by the first TB on the second time-frequency resource through the downlink control signaling to send the data, thereby reducing the DCI downlink control signaling and improving the data transmission efficiency.
For example, assuming that there are CB #4part2, CB #5, CB #6, and CB #7part1 for the data in the second TB that is scheduled to be sent on the second time-frequency resource, then the second TB will send all CBs within CBG #2 and CBG #3 in the first TB: CB #3, CB #4, CB #5, CB #6, CB #7 and CB #8 contain data, namely CB #3, CB #4-part1, CB #7part2 and CB # 8. Then the second TB divides the data into 6 CBs, CB #0-CB #5, the first three CBs being CBG #1 and the last three CBs being CBG # 2. And has the following corresponding relation,
CBG #1 of the second TB corresponds to CBG #2 of the first TB;
CBG #2 of the second TB corresponds to CBG #3 of the first TB.
The downlink control signaling sent by the base station to the terminal needs to indicate the corresponding relationship, and the terminal knows the corresponding relationship between the data in the second TB and the CBG #2 and CBG #3 in the first TB according to the downlink control signaling, so as to implement the merging and decoding of the first TB data and the second TB data, thereby reducing the DCI signaling indication and improving the transmission efficiency of the data.
As shown in fig. 2, in the data transmission method, when the base station finds that a service of another terminal arrives during a process of transmitting the first TB to the terminal on the first time-frequency resource, the base station allocates the second time-frequency resource in the first time-frequency resource to the other terminal, and then the base station needs to transmit the second TB to the terminal. The second TB at least comprises the partial data of the first TB scheduled to be sent on the second time frequency resource by the base station, so the technical problem of how to send the partial data of the first TB scheduled to be sent on the second time frequency resource by the base station is solved. And since the transmitted data is the same as the data scheduled to be transmitted in the previous first TB, the merging decoding is facilitated.
Referring to fig. 3, fig. 3 is a diagram of another data sending method according to an embodiment of the present invention, including:
step S201: the base station transmits a first TB to the terminal on a first time-frequency resource.
Step S201 is identical to step S102 in the data transmission method, and is not described herein again.
Step S202: and in the sending process of the first TB, if the second time-frequency resource in the first time-frequency resource is allocated to other terminals.
And receiving the services of other terminals in the sending process of the first TB, and allocating the second time-frequency resource in the first time-frequency resource to other terminals by the base station in order to meet the time delay requirements of the services of other terminals. That is, part of the symbols in the first time-frequency resource are allocated to other terminals, that is, all or part of the N RBs in the second time-frequency resource do not transmit data or downlink control signaling of the terminal any more during this part of the symbol time, but transmit data or downlink control signaling of other terminals.
In this embodiment, the second TB includes at least a part of data of the first TB that the base station plans to transmit on the second time-frequency resource. That is to say, the second TB includes the part of the data scheduled to be sent on the second time frequency resource by the base station in the first TB, so that the problem of how to send the part of the data scheduled to be sent on the occupied second time frequency resource of the first TB is solved by sending the second TB.
As a specific embodiment, the URLLC service shown in fig. 2 occupies a time-frequency resource map in the TBs of the eMBB service, where the TB of the eMBB service includes 9 CBs, CB0-CB8, and every three CBs are taken as one CBG to obtain 3 CBGs, that is, CB #0, and CB #1 and CB #2 are taken as CBG # 1; namely, CB #3, CB #4 and CB #5 are CBG # 2; namely, CB #6, CB #7 and CB #8 are CBG # 3. Due to the arrival of the URLLC service, the base station allocates the second time-frequency resources in the first time-frequency resources to the other terminals performing the URLLC service, and the base station plans to transmit the data of CB #4part2, CB #5, CB #6, and CB #7part1 of the first TB on the time-frequency resources allocated to the other terminals performing the URLLC service, so that the second TB at least includes the data of CB #4part2, CB #5, CB #6, and CB #7part1 of the first TB.
The present invention does not limit the service executed by the terminal, and preferably, the terminal executes the eMBB service and the other terminals execute the URLLC service. It should be noted that there may be a plurality of other terminals.
Step S203: and judging whether HARQ feedback characters corresponding to all CBGs in the first TB, which are sent by the terminal, are received, if so, executing a step S204, and if not, executing a step S206.
In this embodiment, after receiving the first TB sent by the base station, the terminal feeds back 1-bit HARQ ACK/NACK feedback characters for each CBG by taking the CBG as a unit, and then the base station may receive HARQ feedback characters corresponding to each CBG sent by the terminal for the first TB. After receiving the feedback character, step S204 is executed, and if not, step S206 is executed.
The 1-bit HARQ feedback character can correspond to NACK when the value of the 1bit is set to be zero, namely the receiving is unsuccessful; a value of 1 corresponds to an ACK, i.e. the reception is successful. Of course, the invention is not limited to the specific values of ACK or NACK described above.
Step S204: judging whether at least one bit in the HARQ feedback characters of the CBG to which the data which is not sent on the second time-frequency resource belongs is unsuccessful, if so, executing the step S205; if not, go to step S206.
Since the first TB includes data scheduled to be transmitted on the second time-frequency resource and the second time-frequency resource is occupied by the second TB, the data scheduled to be transmitted on the second time-frequency resource in the first TB is not transmitted to the terminal at all, so the terminal cannot receive the part of data, and the HARQ feedback for the part of data is definitely unsuccessful. Then it is further determined that: if the HARQ feedback character of the CBG to which the data which is not sent on the second time-frequency resource belongs in the HARQ feedback characters in the first TB is successful, executing step S206; if at least one HARQ feedback character of the CBG to which the data not transmitted on the second time-frequency resource belongs is unsuccessful in the HARQ feedback characters in the first TB, step S205 is executed.
Step S205: the sending, by the base station, the second TB to the terminal specifically includes: and the base station plans the CBG to which the partial data of the first TB belongs, which is sent on the second time-frequency resource.
When at least one bit of the remaining HARQ feedback characters is unsuccessful, it indicates that the channel condition is not good, so all data in the CBG to which the data scheduled to be sent on the second time-frequency resource in the first TB belongs need to be carried in the second TB and sent to the terminal.
Optionally, the base station sends a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between a CBG included in the second TB and a CBG included in the first TB. That is, in order to transmit data in the first TB that is scheduled to be transmitted on the second time-frequency resource, the second TB contains all the data within the CBG to which the data belongs. And sending the corresponding relation between the second TB and the data planned to be sent by the first TB on the second time frequency resource through the downlink control signaling to send the data, thereby reducing the DCI downlink control signaling and improving the data transmission efficiency.
For example, assuming that there are CB #4part2, CB #5, CB #6, and CB #7part1 for the data in the second TB that is scheduled to be sent on the second time-frequency resource, then the second TB will send all CBs within CBG #2 and CBG #3 in the first TB: CB #3, CB #4, CB #5, CB #6, CB #7 and CB #8 contain data, namely CB #3, CB #4part1, CB #7part2 and CB # 8. Then the second TB divides the data into 6 CBs, CB #0-CB #5, the first three CBs being CBG #1 and the last three CBs being CBG # 2. And has the following corresponding relation,
CBG #1 of the second TB corresponds to CBG #2 of the first TB;
CBG #2 of the second TB corresponds to CBG #3 of the first TB.
The downlink control signaling sent by the base station to the terminal needs to indicate the corresponding relationship, and the terminal knows the corresponding relationship between the data in the second TB and the CBG #2 and CBG #3 in the first TB according to the downlink control signaling, so as to implement the merging and decoding of the first TB data and the second TB data, thereby reducing the DCI signaling indication and improving the transmission efficiency of the data.
Step S206: the sending, by the base station, the second TB to the terminal specifically includes: and the base station sends partial data of the first TB planned to be sent on the second time-frequency resource by the base station, or the CB to which the partial data belongs, or the CBG to which the partial data belongs to the terminal.
When the HARQ feedback characters of the CBGs scheduled to be sent on the second time frequency resource in the first TB are unsuccessful, it is described that the reason why the CBGs are unsuccessfully received is mainly that the second time frequency resource is occupied by other terminals, so the base station sends the data scheduled to be sent on the second time frequency resource to the terminal through the second TB, or before the base station sends the second TB to the terminal, the base station does not receive the HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal, and the base station sends the second TB to the terminal, thereby improving the efficiency and accuracy of data transmission.
In this embodiment, the second TB in step 206 is a part of data of the first TB that the base station plans to send on the second time-frequency resource; or the second TB is a CB to which the partial data of the first TB, which is scheduled to be sent by the base station on the second time-frequency resource, belongs; or the second TB comprises a CBG to which partial data of the first TB planned to be sent by the base station on the second time-frequency resource belongs.
Since a plurality of CBs form a CBG, and a CB includes a plurality of bit data, we refer to a part of the bit data in the CB as a subcode block, such as a CB part. As shown in fig. 2, CB #4 contains CB #4part1 and CB #4part2, but it is not fixed how many bits each of the specific CB #4part1 and CB #4part2 contains. For example, the entire CB #4 contains 8000 bits, while CB #4part1 can be 3000 bits, in which case CB #4part2 is 5000 bits; while CB #4part1 may be 4000 bits, CB #4part2 is 4000 bits.
That is to say, the second TB may include data that is scheduled by the base station in the first TB to be transmitted on the second time-frequency resource, and this data may only include data that is scheduled to be transmitted on the second time-frequency resource in the first TB, may only include a CB to which the data that is scheduled to be transmitted on the second time-frequency resource in the first TB belongs, and may also include a CBG to which the data that is scheduled to be transmitted on the second time-frequency resource in the first TB belongs.
In order to improve the transmission efficiency of the base station planning to send data on the second time-frequency resource, the data which is planned to be sent on the second time-frequency resource by the base station in the first TB is sent with the least data quantity as possible. The downlink control signaling should indicate that the CBG, CB, or CB part corresponding to the first TB is included in the transmission basic unit CBG in the second TB. Since the data transmitted in the second TB is identical to the data scheduled to be transmitted in the first TB before, the joint decoding is facilitated.
Optionally, the base station sends a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between a CBG included in the second TB and a CBG included in the first TB, a correspondence between a CB included in each CBG included in the second TB and a CB included in the CBG included in the first TB, and a correspondence between a sub-code block CB part included in each CBG included in the second TB and a sub-code block CB part included in a CB included in the CBG included in the first TB. That is to say, in order to send only the data scheduled to be sent on the occupied time frequency resource in the first TB, the corresponding relationship between the second TB and the data scheduled to be sent on the second time frequency resource by the first TB may be sent through the downlink control signaling to send the data, so as to further improve the efficiency of data transmission.
For example, suppose that the second TB includes CB #4part2, CB #5, CB #6, and CB #7part1 of the data scheduled to be transmitted on the second time-frequency resource in the first TB. And the second TB re-groups the data into CB groups and CBG groups, for example, the data are divided into 6 CBs, CB #0-CB #5, the first three CBs are CBG #1, and the last three CBs are CBG # 2. The following corresponding relations are provided:
CB #0 of CBG #1 of the second TB corresponds to CB #4part2 of CBG #2 of the first TB;
CB #1 and CB #2 of CBG #1 of the second TB correspond to CB #5 of CBG #2 of the first TB;
CB #3 and CB #4 of CBG #2 of the second TB correspond to CB #6 of CBG #3 of the first TB;
CB #5 of CBG #2 of the second TB corresponds to CB #7part1 of CBG #3 of the first TB.
Then, the downlink control signaling sent by the base station to the terminal needs to indicate the corresponding relationship, and the terminal knows the corresponding relationship between the second TB internal data and the first TB internal CB #4part2, CB #5, CB #6 and CB #7part1 according to the downlink control signaling, so as to implement the merging and decoding of the first TB data and the second TB data, thereby improving the transmission efficiency of the data.
Optionally, the base station sends a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between CBGs included in the second TB and CBGs included in the first TB, and a correspondence between CBs included in each CBG included in the second TB and CBs included in each CBG included in the first TB. That is to say, in order to transmit data scheduled to be transmitted on the second time frequency resource in the first TB, the second TB includes all data in the CB to which the data belongs, and the data is transmitted by sending the corresponding relationship between the second TB and the data scheduled to be transmitted on the second time frequency resource by the first TB through the downlink control signaling, so that the efficiency of transmitting data is improved while the DCI downlink control signaling is reduced.
For example, assuming that the second TB includes CB #4part2, CB #5, CB #6, and CB #7part1, which are data of the first TB scheduled to be transmitted on the second time-frequency resource, the second TB will transmit data of the first TB, which includes CB #4part1 and CB #7part2, which includes CB #4part2, CB #5, CB #6, and CB #7 part. Then the second TB divides the data into four CBs, CB #0-CB #3, the first two CBs being CBG #1 and the last two CBs being CBG # 2. And has the following corresponding relation,
CB #0 of CBG #1 of the second TB corresponds to CB #4 of CBG #2 of the first TB;
CB #1 of CBG #1 of the second TB corresponds to CB #5 of CBG #2 of the first TB;
CB #2 of CBG #2 of the second TB corresponds to CB #6 of CBG #3 of the first TB;
CB #3 of CBG #2 of the second TB corresponds to CB #7 of CBG #3 of the first TB.
The downlink control signaling sent by the base station to the terminal needs to indicate the corresponding relationship, and the terminal knows the corresponding relationship between the second TB internal data and the first TB internal CB #4, CB #5, CB #6 and CB #7 according to the downlink control signaling, so as to implement the merging and decoding of the first TB data and the second TB data, thereby reducing the DCI signaling indication and improving the transmission efficiency of the data.
Optionally, the base station sends a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between a CBG included in the second TB and a CBG included in the first TB. That is, in order to transmit data in the first TB that is scheduled to be transmitted on the second time-frequency resource, the second TB contains all the data within the CBG to which the data belongs. And sending the corresponding relation between the second TB and the data planned to be sent by the first TB on the second time-frequency resource through the downlink control signaling to send the data, thereby reducing the DCI downlink control signaling and improving the data transmission efficiency.
For example, assuming that there are CB #4part2, CB #5, CB #6, and CB #7part1 for the data in the second TB that is scheduled to be sent on the second time-frequency resource, then the second TB will send all CBs within CBG #2 and CBG #3 in the first TB: CB #3, CB #4, CB #5, CB #6, CB #7 and CB #8 contain data, namely CB #3, CB #4part1, CB #7part2 and CB # 8. Then the second TB divides the data into 6 CBs, CB #0-CB #5, the first three CBs being CBG #1 and the last three CBs being CBG # 2. And has the following corresponding relation,
CBG #1 of the second TB corresponds to CBG #2 of the first TB;
CBG #2 of the second TB corresponds to CBG #3 of the first TB.
The downlink control signaling sent by the base station to the terminal needs to indicate the corresponding relationship, and the terminal knows the corresponding relationship between the data in the second TB and the CBG #2 and CBG #3 in the first TB according to the downlink control signaling, so as to implement the merging and decoding of the first TB data and the second TB data, thereby reducing the DCI signaling indication and improving the transmission efficiency of the data.
As shown in fig. 3, in the process of sending the first TB to the terminal by the base station, when finding that the traffic of other terminals arrives during the process of sending the first TB by the base station on the first time-frequency resource, the base station allocates the second time-frequency resource in the first time-frequency resource to the other terminals, then determines whether to receive the HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal, if so, further determines how to send the HARQ feedback characters according to the condition of the CBG corresponding to the unsuccessful HARQ feedback character, and if not, sends the second TB to the terminal. The second TB at least comprises the partial data of the first TB scheduled to be sent on the second time frequency resource by the base station, so the technical problem of how to send the partial data of the first TB scheduled to be sent on the second time frequency resource by the base station is solved. And the transmitted data is the same as the data which is scheduled to be transmitted in the first TB, so that the merging and decoding are convenient, and the data which needs to be transmitted repeatedly is reduced on the basis of ensuring the successful decoding.
In order to solve the technical problem of how to transmit data of an eMMC service, which is scheduled to be transmitted by a base station on occupied time-frequency resources after user equipment executing the eMMC service occupies partial time-frequency resources by the user equipment of the URLLC service, in an embodiment, a data transmitting device is provided. As shown in fig. 4, the above data transmission apparatus is based on a transport block TB, and the TB includes: at least one code block group, CBG, comprising at least one code block, CB, comprising a first transmission module 102 and a second transmission module 104, wherein:
a first transmission module 102, configured to send a first TB to a terminal on a first time-frequency resource;
a second transmission module 104, configured to send a second TB to the terminal if a second time-frequency resource in the first time-frequency resource is allocated to another terminal in a sending process of the first TB, where the second TB at least includes part of data of the first TB scheduled to be sent on the second time-frequency resource.
In one embodiment, the second TB is a part of data of the first TB scheduled to be transmitted on the second time-frequency resource; or the like, or, alternatively,
the second TB is a CB to which part of data of the first TB planned to be sent on the second time-frequency resource belongs; or the like, or, alternatively,
the second TB includes a CBG to which partial data of the first TB scheduled to be transmitted on the second time-frequency resource belongs.
In one embodiment, the apparatus further comprises:
a determining module 106, configured to determine whether HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal are received before sending the second TB to the terminal;
the second transmission module is specifically configured to, when the determination module determines that the partial data of the first TB or the CB to which the partial data belongs or the CBG to which the partial data belongs, send, to the terminal, the partial data of the first TB scheduled to be sent on the second time-frequency resource; or the like, or, alternatively,
the second transmission module is specifically configured to, when the determination module determines that the HARQ feedback character of the CBG to which the data that is not sent on the second time-frequency resource belongs is successful, send the second TB to the terminal, where the second TB is partial data of the first TB, or a CB to which the partial data belongs, or a CBG to which the partial data belongs, that is scheduled to be sent on the second time-frequency resource.
In one embodiment, the apparatus further comprises:
a determining module 106, configured to determine whether HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal are received before sending the second TB to the terminal;
the second transmission module is specifically configured to, when the determining module determines that at least one bit in a HARQ feedback character of a CBG to which data that is not sent on the second time-frequency resource belongs is unsuccessful, send the second TB to the terminal, where one CBG corresponds to one bit, and the method specifically includes: and planning the CBG to which the partial data of the first TB belongs, which is sent on the second time-frequency resource.
In one embodiment, the second transmission module 104 is further configured to send a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between CBGs included in the second TB and CBGs included in the first TB, a correspondence between CBs included in each CBG included in the second TB and CBs included in the CBGs included in the first TB, and a correspondence between sub-code blocks CB part in CBs included in each CBG included in the second TB and sub-code blocks CB part in CBs included in the CBG included in the first TB.
In one embodiment, the second transmission module 104 is further configured to send a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between CBGs included in the second TB and CBGs included in the first TB, and a correspondence between CBs included in each CBG included in the second TB and CBs included in each CBG included in the first TB.
In one embodiment, the second transmission module 104 is further configured to send a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between a CBG included in the second TB and a CBG included in the first TB.
As shown in fig. 4, in the process of sending the first TB to the terminal by the base station, when finding that the traffic of other terminals arrives, the base station allocates the second time-frequency resource in the first time-frequency resource to the other terminals, and then determines whether to receive the HARQ feedback character corresponding to each CBG in the first TB sent by the terminal, if so, further determines how to send the HARQ feedback character according to the condition of the CBG corresponding to the unsuccessful HARQ feedback character, and if not, sends the second TB to the terminal. The second TB at least comprises the partial data of the first TB scheduled to be sent on the second time frequency resource by the base station, so the technical problem of how to send the partial data of the first TB scheduled to be sent on the second time frequency resource by the base station is solved. And because the data transmitted by the second TB is the same as the data which is scheduled to be transmitted in the first TB, the merging and decoding are convenient, and the data which needs to be transmitted repeatedly is reduced on the basis of ensuring the successful decoding.
In one embodiment, as shown in fig. 5, fig. 5 illustrates a terminal of a computer system based on the von neumann architecture that runs a method of sending data. The computer system can be terminal equipment such as a smart phone, a tablet computer, a palm computer, a notebook computer or a personal computer. Specifically, an external input interface 1001, a processor 1002, a memory 1003, and an output interface 1004 connected through a system bus may be included. The external input interface 1001 may optionally include at least a network interface 10012. Memory 1003 can include external memory 10032 (e.g., a hard disk, optical or floppy disk, etc.) and internal memory 10034. The output interface 1004 may include at least a display 10042 or the like.
In the present embodiment, the method is executed based on a computer program, program files of which are stored in the external memory 10032 of the computer system based on the von neumann system, loaded into the internal memory 10034 at the time of execution, and then compiled into machine code and then transferred to the processor 1002 for execution, so that the first transmission module 102, the second transmission module 104, and the determination module 106 logically are formed in the computer system based on the von neumann system. In the process of transmitting the data, the input parameters are received through the external input interface 1001, transferred to the memory 1003 for buffering, and then input to the processor 1002 for processing, and the processed result data is buffered in the memory 1003 for subsequent processing or transferred to the output interface 1004 for outputting.
Specifically, the output interface 1004 is configured to send a first TB to the terminal on a first time/frequency resource; and in the process of sending the first TB, if a second time-frequency resource in the first time-frequency resource is allocated to other terminals, sending a second TB to the terminal, wherein the second TB at least comprises part of data of the first TB planned to be sent on the second time-frequency resource.
In an optional embodiment, the second TB is a part of data of the first TB scheduled to be transmitted on the second time-frequency resource; or the second TB is a CB to which part of data of the first TB scheduled to be sent on the second time-frequency resource belongs; or the second TB includes a CBG to which partial data of the first TB scheduled to be transmitted on the second time-frequency resource belongs.
In an optional embodiment, if the external input interface 1001 does not receive HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal, the output interface 1004 is further configured to send a second TB to the terminal, and specifically includes: the base station sends partial data of the first TB planned to be sent on the second time-frequency resource by the base station, or a CB (broadcast channel) to which the partial data belongs, or a CBG (broadcast channel) to which the partial data belongs to the terminal; or the like, or, alternatively,
if the external input interface 1001 receives HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal, if the HARQ feedback characters of the CBG to which data not sent on the second time-frequency resource belongs are successful; the output interface 1004 is further configured to send a second TB to the terminal, and specifically includes: and the base station sends partial data of the first TB planned to be sent on the second time-frequency resource by the base station, or the CB to which the partial data belongs, or the CBG to which the partial data belongs to the terminal.
In an optional embodiment, if the external input interface 1001 receives HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal, and if at least one bit in the HARQ feedback characters of the CBG to which data that is not sent on the second time-frequency resource belongs is unsuccessful, where one CBG corresponds to one bit, the sending, by the base station, the second TB to the terminal specifically includes: and planning the CBG to which the partial data of the first TB belongs, which is sent on the second time-frequency resource.
In an optional embodiment, the output interface 1004 is further configured to send a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between CBGs included in the second TB and CBGs included in the first TB, a correspondence between CBs included in each CBG included in the second TB and CBs included in the first TB, and a correspondence between sub-code blocks CB part in CBs included in each CBG included in the second TB and sub-code blocks CB part in CBs included in the first TB.
In an optional embodiment, the output interface 1004 is further configured to send a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a corresponding relationship between a CBG included in the second TB and a CBG included in the first TB, and a corresponding relationship between a CB included in each CBG included in the second TB and a CB included in each CBG included in the first TB.
In an optional embodiment, the output interface 1004 is further configured to send a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between a CBG included in the second TB and a CBG included in the first TB.
In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.

Claims (12)

1. A method for transmitting data, the method is characterized in that the method transmits data based on a transport block TB, and the TB comprises: at least one code block group, CBG, the CBG comprising at least one code block, CB, the method comprising:
the base station sends a first TB to the terminal on a first time-frequency resource;
in the process of sending the first TB, if a second time-frequency resource in the first time-frequency resource is allocated to other terminals, the base station sends a second TB to the terminals, wherein the second TB at least comprises partial data of the first TB planned to be sent on the second time-frequency resource by the base station;
if the base station does not receive the HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal, the base station sends a second TB to the terminal, which specifically includes: the base station sends partial data of the first TB planned to be sent on the second time-frequency resource by the base station, or a CB (broadcast channel) to which the partial data belongs, or a CBG (broadcast channel) to which the partial data belongs to the terminal; or the like, or, alternatively,
if the base station receives HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal, and if the HARQ feedback characters of the CBGs to which data that is not sent on the second time-frequency resource belongs are successful, the base station sends the second TB to the terminal, which specifically includes: and the base station sends partial data of the first TB planned to be sent on the second time-frequency resource by the base station, or the CB to which the partial data belongs, or the CBG to which the partial data belongs to the terminal.
2. The method of claim 1,
the second TB is part of data of the first TB planned to be sent on the second time-frequency resource by the base station; or the like, or, alternatively,
the second TB is a CB to which partial data of the first TB, which is scheduled to be sent by the base station on the second time-frequency resource, belongs; or the like, or, alternatively,
the second TB comprises a CBG to which partial data of the first TB planned to be sent by the base station on the second time-frequency resource belongs.
3. The method of claim 2, further comprising:
if the base station receives HARQ feedback characters corresponding to each CBG in the first TB sent by the terminal, and if at least one bit in the HARQ feedback characters of the CBGs to which data which is not sent on the second time-frequency resource belongs is unsuccessful, where one CBG corresponds to one bit, the base station sends the second TB to the terminal, which specifically includes: and the base station plans the CBG to which the partial data of the first TB belongs, which is sent on the second time-frequency resource.
4. The method according to any of claims 1-3, wherein the second TB is a part of data of the first TB that the base station plans to transmit on the second time-frequency resource, the method further comprising:
and the base station sends a downlink control signaling to the terminal, wherein the downlink control signaling is used for indicating the terminal to identify the corresponding relation between the CBG contained in the second TB and the CBG contained in the first TB, the corresponding relation between the CB contained in each CBG contained in the second TB and the CB contained in the first TB, and the corresponding relation between the sub-code block CB part contained in each CBG contained in the second TB and the sub-code block CB part contained in the CB contained in the first TB.
5. The method as claimed in any of claims 1-3, wherein the second TB is a CB to which part of data of the first TB scheduled to be transmitted by the base station on the second time-frequency resource belongs, the method further comprising:
and the base station sends a downlink control signaling to the terminal, wherein the downlink control signaling is used for indicating the terminal to identify the corresponding relation between the CBG contained in the second TB and the CBG contained in the first TB, and the corresponding relation between the CB contained in each CBG contained in the second TB and the CB contained in each CBG contained in the first TB.
6. The method according to any of claims 1-3, wherein the second TB comprises a CBG to which the partial data of the first TB that the base station plans to send on the second time-frequency resource belongs, the method further comprising:
and the base station sends a downlink control signaling to the terminal, wherein the downlink control signaling is used for indicating the terminal to identify the corresponding relation between the CBG contained in the second TB and the CBG contained in the first TB.
7. An apparatus for transmitting data, the apparatus performing data transmission based on a transport block, TB, comprising: at least one code block group, CBG, the CBG comprising at least one code block, CB, the apparatus comprising:
a first transmission module, configured to send a first TB to a terminal on a first time-frequency resource;
a second transmission module, configured to send a second TB to the terminal if a second time-frequency resource in the first time-frequency resource is allocated to another terminal in a sending process of the first TB, where the second TB at least includes part of data of the first TB scheduled to be sent on the second time-frequency resource;
the judging module is used for judging whether HARQ feedback characters corresponding to all CBGs in the first TB sent by the terminal are received or not before the second TB is sent to the terminal;
the second transmission module is specifically configured to, when the determination module determines that the partial data of the first TB or the CB to which the partial data belongs or the CBG to which the partial data belongs, send, to the terminal, the partial data of the first TB scheduled to be sent on the second time-frequency resource; or the like, or, alternatively,
the second transmission module is specifically configured to, when the determination module determines that the HARQ feedback character of the CBG to which the data that is not sent on the second time-frequency resource belongs is successful, send the second TB to the terminal, where the second TB is partial data of the first TB, or a CB to which the partial data belongs, or a CBG to which the partial data belongs, that is scheduled to be sent on the second time-frequency resource.
8. The apparatus of claim 7, wherein the second TB is a portion of data of the first TB scheduled to be transmitted on the second time-frequency resource; or
The second TB is a CB to which part of data of the first TB planned to be sent on the second time-frequency resource belongs; or
The second TB includes a CBG to which partial data of the first TB scheduled to be transmitted on the second time-frequency resource belongs.
9. The apparatus of claim 8, further comprising:
the judging module is used for judging whether HARQ feedback characters corresponding to all CBGs in the first TB sent by the terminal are received or not before the second TB is sent to the terminal;
the second transmission module is specifically configured to, when the determining module determines that at least one bit in a HARQ feedback character of a CBG to which data that is not sent on the second time-frequency resource belongs is unsuccessful, send the second TB to the terminal, where one CBG corresponds to one bit, and the method specifically includes: and planning the CBG to which the partial data of the first TB belongs, which is sent on the second time-frequency resource.
10. The apparatus according to any one of claims 7 to 9, wherein the second transmission module is further configured to send downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence relationship between CBGs included in the second TB and CBGs included in the first TB, a correspondence relationship between CBs in each CBG included in the second TB and CBs in each CBG included in the first TB, and a correspondence relationship between sub-code blocks CB part in each CBG included in the second TB and sub-code blocks CB part in CBs included in the first TB.
11. The apparatus according to any one of claims 7 to 9, wherein the second transmission module is further configured to send a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between CBGs included in the second TB and CBGs included in the first TB, and a correspondence between CBs in each CBG included in the second TB and CBs in each CBG included in the first TB.
12. The apparatus according to any one of claims 7-9, wherein the second transmission module is further configured to send a downlink control signaling to the terminal, where the downlink control signaling is used to instruct the terminal to identify a correspondence between the CBG included in the second TB and the CBG included in the first TB.
CN201710314154.1A 2017-05-05 2017-05-05 Data sending method and device Active CN107154835B (en)

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