CN112351494A - Data transmission method, device, related equipment and storage medium - Google Patents
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- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- 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
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- 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
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- 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
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- 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
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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Abstract
The invention discloses a data transmission method, a data transmission device, network equipment, a terminal and a storage medium. The method comprises the following steps: applied to a network device, comprising: configuring a Transport Block (TB) for retransmission to a terminal on at least two slots; wherein a hybrid automatic repeat request (HARQ) function of the terminal is turned off.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a data transmission method, apparatus, related device, and storage medium.
Background
In a communication system, information may be lost during channel transmission, so in order to maintain the integrity of the information, it is necessary to retransmit the information until all the information is correctly received. There are two retransmission mechanisms in the communication system, which are a hybrid Automatic Repeat reQuest (HARQ) mechanism of a Media Access Control (MAC) layer and an Automatic Repeat reQuest (ARQ) mechanism of a Radio Link Control (RLC) layer.
In the HARQ scheme, while one HARQ process (process) waits for acknowledgement information, another HARQ process may be used to continue transmitting data. In this case, when HARQ retransmission is used, some data packets may experience extra bidirectional transmission delay, and therefore, how to improve the reliability of data transmission is an urgent problem to be solved at present.
Disclosure of Invention
In order to solve the related technical problems, embodiments of the present invention provide a data transmission method, an apparatus, related devices, and a storage medium.
The technical scheme of the embodiment of the invention is realized as follows:
the embodiment of the invention provides a data transmission method, which is applied to network equipment and comprises the following steps:
configuring a Transport Block (TB) for retransmission to a terminal on at least two slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
In the above scheme, the method further comprises:
retransmitting the TB to the terminal on at least two slots.
In the above scheme, the at least two timeslots are configured with a timeslot interval.
In the above scheme, the symbol positions configured in each of the at least two slots for transmitting the TBs are the same.
In the above scheme, the relevant configuration information of the retransmission at least includes:
the number of retransmissions;
retransmitting a slot interval of the TB.
In the above scheme, the retransmitting the configured TB to the terminal on at least two timeslots includes:
configuring a TB to retransmit to a terminal on at least two time slots in a semi-static mode;
alternatively, the first and second electrodes may be,
and configuring the TB to be retransmitted to the terminal on at least two time slots in a dynamic mode.
In the foregoing solution, the configuring, in a semi-static manner, the TB to be retransmitted to the terminal on at least two timeslots includes:
indicating the retransmitted related configuration information to the terminal through Radio Resource Control (RRC) signaling.
In the foregoing solution, the configuring, by a dynamic manner, the TB to be retransmitted to the terminal on at least two timeslots includes:
and indicating the relevant configuration information of the retransmission to the terminal through Downlink Control Information (DCI).
In the foregoing solution, when the relevant configuration information of retransmission is indicated to the terminal through the DCI, the relevant configuration information of retransmission is indicated by multiplexing at least part of the domains in all the domains relevant to HARQ in the DCI.
In the above scheme, the method further comprises:
redefining the at least part of the domain by RRC signaling.
In the foregoing solution, when the relevant configuration information of retransmission is indicated to the terminal through the DCI, the relevant configuration information of retransmission is indicated through a newly added domain in the DCI.
The embodiment of the invention also provides a data transmission method, which is applied to a terminal and comprises the following steps:
receiving relevant configuration information of retransmission sent by a network side; the relevant configuration information of retransmission indicates that the terminal TB is retransmitted to the terminal on at least two time slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
In the above scheme, the method further comprises:
and receiving the TB retransmitted by the network side on at least two time slots by using the retransmitted related configuration information.
In the above scheme, the at least two timeslots are configured with a timeslot interval.
In the above scheme, the retransmitted TBs are received at the same symbol position in each of the at least two slots.
In the above scheme, the receiving of the relevant configuration information of the retransmission sent by the network side includes:
receiving relevant configuration information of retransmission indicated by RRC signaling at a network side;
alternatively, the first and second electrodes may be,
and receiving the relevant configuration information of retransmission indicated by the DCI by the network side.
In the foregoing solution, the receiving network side, through the relevant configuration information of the retransmission indicated by the DCI, includes:
and the receiving network side multiplexes the related configuration information of retransmission indicated by at least part of domains in all domains related to the HARQ in the DCI.
In the above scheme, the method further comprises:
receiving the at least part of the domain redefined by the network side through RRC signaling.
In the foregoing solution, the receiving network side, through the relevant configuration information of the retransmission indicated by the DCI, includes:
and receiving the relevant configuration information of retransmission indicated by the newly added domain of the DCI by the network side.
An embodiment of the present invention further provides a data transmission device, including:
a configuration unit, configured to configure the TB for retransmission to the terminal on at least two slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
An embodiment of the present invention further provides a data transmission device, including:
receiving relevant configuration information of retransmission sent by a network side; the retransmitted related configuration information indicates that a terminal TB retransmits to the terminal on at least two time slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
An embodiment of the present invention further provides a network device, including: a first processor and a first communication interface; wherein the content of the first and second substances,
the first processor is configured to configure, through the first communication interface, a TB for retransmission to a terminal on at least two timeslots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
An embodiment of the present invention further provides a terminal, including: a second processor and a second communication interface; wherein the content of the first and second substances,
the second processor is configured to receive, through the second communication interface, retransmission-related configuration information sent by a network side; the relevant configuration information of retransmission indicates that the terminal TB is retransmitted to the terminal on at least two time slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
An embodiment of the present invention further provides a network device, including: a first processor and a first memory for storing a computer program capable of running on the processor,
wherein the first processor is configured to execute the steps of any one of the methods of the network device side when running the computer program.
An embodiment of the present invention further provides a terminal, including: a second processor and a second memory for storing a computer program capable of running on the processor,
wherein the second processor is configured to execute the steps of any of the above-mentioned methods of the terminal side when running the computer program.
An embodiment of the present invention further provides a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any method on the network device side or implements the steps of any method on the terminal side.
According to the data transmission method, the data transmission device, the related equipment and the storage medium provided by the embodiment of the invention, when the HARQ function of the terminal is closed, the network equipment configures the TB to be retransmitted to the terminal on at least two slots, and retransmits the TB through a plurality of slots, so that the reliability of data transmission can be ensured under the condition that the HARQ function of the terminal is closed.
Drawings
Fig. 1 is a schematic diagram of HARQ process duration in a bent pipe transmission scenario in a Non-terrestrial network (NTN);
FIG. 2 is a flow chart of a data transmission method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a transmission timing sequence when a related field of a multiplexed DCI format1-0 indicates that an interval between retransmission slots is 4 slots according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a data transmission device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating a network device according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a terminal structure according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
In the HARQ mechanism, data is transmitted using a stop-and-wait protocol (stop-and-wait process), that is, after a sender transmits a TB, the sender stops to wait for acknowledgement information, and a receiver feeds back Acknowledgement (ACK) or Negative Acknowledgement (NACK) to the TB using 1-bit information. But the sender stops waiting for an acknowledgement after each transmission, which reduces system throughput. Based on this, a plurality of parallel stop-and-wait processes are proposed, i.e. when one HARQ process is waiting for acknowledgement information, the transmitting end can continue to transmit data using another HARQ process.
The minimum number of HARQ processes required in the communication system may be calculated according to the following formula:
wherein, TsfDenotes the sub-frame size, TueIndicating the processing duration, T, of the User Equipment (UE)ackIndicating ACK/NACK transmission duration, TnbIndicating the base station processing duration, and RTT indicating Round Trip Delay (RTT). T issf+Tue+Tack+Tnb+ RTT may be collectively referred to as HARQ process duration THARQ。
FIG. 1 shows a T in the bent pipe transmission scenario in NTNHARQ. In fig. 1, Tp represents transmission delay, and RTT is 2 Tp; t isslotIndicating the length of a time slot in the case of a 15kHz subcarrier spacing, i.e. Tsf；Tproc1Represents HARQ process processing delay 1; t isproc2Indicating HARQ process processing delay 2.
In NTN, the number of HARQ processes is mainly affected by RTT, because: the RTT is different in different scenes due to different satellite heights and different transmission modes of bent pipes or on-satellite, so the required minimum HARQ process number is also different. For example, when the subcarrier spacing is 15kHz, the minimum number of HARQ processes required in a scenario of a ground network (Terrestrial), a low earth orbiting satellite system (LEO, with a satellite height of 1500km), a medium earth orbiting satellite system (MEO, with a satellite height of 10000km), a geostationary satellite system (GEO, with a satellite height of 35786 km)/a high altitude orbiting satellite system (HEO, with a satellite height of 400-50000 km) can be estimated as shown in table 1 below.
TABLE 1
As can be seen from table 1, in the fifth generation mobile communication technology (5G) new air interface (NR) system, the maximum number of HARQ processes that can be supported by one UE is 16, while the number of HARQ processes in the NTN system is far more than 16. However, too many HARQ processes require a large memory space on the receiving side, and frequent use of HARQ also causes data link jitter. In this case, some packets will experience additional bi-directional transmission delay when HARQ retransmission is used.
Based on this, a HARQ disabling (disabling) mechanism is defined, that is, the network side may configure the switch state of HARQ, and may specifically be implemented by two modes, namely Semi-static (Semi-static) HARQ disabling and dynamic (dynamic) HARQ disabling.
However, when HARQ disabling is configured, the HARQ function of the terminal is turned off, and at this time, uplink feedback will not be provided for downlink data transmission any more, and in this case, the reliability of data transmission will be reduced.
Based on this, in order to improve data transmission reliability, in various embodiments of the present invention, the HARQ function of the network side configuration terminal is turned off, at this time, there is no Uplink (UL) ACK/NACK feedback for downlink data transmission, and in order to ensure data transmission reliability, the network side configures a TB for retransmission (repeat transmission, which may be expressed as retransmission or retransmission) on multiple slots.
An embodiment of the present invention provides a data transmission method, which is applied to a network device, specifically, a base station (e.g., a next generation node b (gnb)), and the method includes: configuring TB to be retransmitted to a terminal on at least two time slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
That is, for one TB, the TB is configured for retransmission to the terminal on at least two slots.
Here, when the HARQ function of the terminal is turned off, there is no uplink ACK/NACK feedback for downlink data transmission.
At least two slots are configured with a slot interval, that is, a slot interval is set between two adjacent slots of at least two slots for transmitting the TB.
Here, in practical application, the set timeslot interval size is related to a system parameter (mainly, subcarrier interval), that is, when the value of the system parameter is 15kHz, the timeslot interval of at least two timeslots used for retransmission of the TB is equal to the timeslot interval value configured on the network side (that is, the length of one slot configured on the network side is 1ms when the subcarrier interval is 15 kHz); when the value of the system parameter is 30kHz, the timeslot interval of at least two timeslots of the retransmission TB is equal to the result of the calculation of the timeslot interval value configured on the network side and the scale factor (scale), for example, Slot interval ═ interval ^ 2^ u ^ scale. The Slot interval indicates a Slot interval of at least two slots of the retransmission TB, and the interval indicates a Slot interval value arranged on the network side. Wherein u represents an index value when a system parameter is configured; specifically, when the value of u is 0, the system parameter is 15kHz subcarrier spacing; when u takes a value of 1, the system parameter is 30kHz subcarrier interval; when u takes the value of 2, the system parameter is the subcarrier interval of 60 kHz; when u takes a value of 3, the system parameter is 120kHz subcarrier spacing; when u takes the value of 4, the system parameter is 240kHz subcarrier spacing.
In practical applications, in order to reduce the complexity of processing at the receiving end, the network device may further configure the symbol position used for transmitting the TB in each of the at least two slots to be the same.
When the configured TB is retransmitted to the terminal on at least two slots, the retransmitted related configuration information needs to be sent to the terminal.
In an embodiment, the retransmitted related configuration information may include at least:
the number of retransmissions;
retransmitting a slot interval of the TB.
Wherein, if the retransmission number is set to N, the TB is retransmitted on N slots, where N is a natural number greater than or equal to 2, and may also be understood as an integer greater than or equal to 2.
Here, the number of retransmissions can be understood as the number of repeated transmissions. For example, assuming that the number of repetitions is 2, one TB is transmitted 2 times; assuming that the number of repetitions is 3, one TB is transmitted 3 times, and so on.
The slot interval can also be understood as an offset (offset) of the slot used for retransmitting the TB.
In practical application, the network device may configure the TB to be retransmitted to the terminal on at least two timeslots in a dynamic configuration manner, or configure the TB to be retransmitted to the terminal on at least two timeslots in a semi-static configuration manner.
In an embodiment, the configuring, by a dynamic manner, the TB to be retransmitted to the terminal on at least two slots includes:
and indicating the relevant configuration information of the retransmission to the terminal through the DCI.
Here, in actual use, the DCI is carried through a Physical Downlink Control Channel (PDCCH).
When the DCI indicates the configuration information related to the retransmission to the terminal, the format of the existing DCI format (format) may not be changed, and in this case, the HARQ-related fields (all the HARQ-related fields or some HARQ-related fields) in the DCI format may be multiplexed, and the indication of the configuration information related to the retransmission may be implemented by redefining the meanings of the fields.
Based on this, in an embodiment, when the relevant configuration information of retransmission is indicated to the terminal through DCI, the relevant configuration information of retransmission is indicated by multiplexing at least part of all domains related to HARQ in DCI.
In actual application, because the meanings of the domains are redefined, the terminal needs to be notified of the definitions of the domains, so that the terminal can accurately know the relevant configuration information of the retransmission.
Based on this, in an embodiment, the method may further include:
redefining the at least part of the domain by RRC signaling.
That is, the terminal is informed of the at least part of the domain to be redefined through RRC signaling.
In practical application, the HARQ related field in the DCI format may be partially reserved, for example, the at least partial field may be reserved.
Of course, when the terminal is instructed to retransmit the relevant configuration information through the DCI, a new field for instructing the relevant configuration information of the retransmission may be added to the DCI format, and in this case, the field related to the HARQ in the DCI format needs to be removed.
Based on this, in an embodiment, when the relevant configuration information of the retransmission is indicated to the terminal through the DCI, the relevant configuration information of the retransmission is indicated through a new added domain in the DCI.
In an embodiment, the configuring, in a semi-static manner, the TB to be retransmitted to the terminal on at least two slots includes:
and indicating the retransmitted related configuration information to the terminal through RRC signaling.
In practical application, the RRC signaling may specifically be an RRC reconfiguration message or the like.
The manner of indicating the retransmitted related configuration information to the terminal through RRC signaling can use less overhead than the manner of indicating the retransmitted related configuration information to the terminal through DCI.
After the configuration is completed, the network device retransmits TB to the terminal on at least two configured slots.
Correspondingly, the embodiment of the invention also provides a data transmission method, which is applied to a terminal and comprises the following steps:
receiving relevant configuration information of retransmission sent by a network side; the relevant configuration information of retransmission indicates that the terminal TB is retransmitted to the terminal on at least two time slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
In an embodiment, the method may further comprise:
and receiving the TB retransmitted by the network side on at least two slots by utilizing the retransmitted related configuration information.
In an embodiment, the terminal receives the retransmitted TB at the same symbol position in each of the at least two slots.
In an embodiment, the receiving of the configuration information related to the retransmission sent by the network side includes:
receiving relevant configuration information of retransmission indicated by RRC signaling at a network side;
alternatively, the first and second electrodes may be,
and receiving the relevant configuration information of retransmission indicated by the DCI by the network side.
In an embodiment, the receiving network side, through the relevant configuration information of the retransmission indicated by the DCI, includes:
and the receiving network side multiplexes the related configuration information of retransmission indicated by at least part of domains in all domains related to the HARQ in the DCI.
In an embodiment, the method may further include:
receiving the at least part of the domain redefined by the network side through RRC signaling.
In an embodiment, the receiving network side, through the relevant configuration information of the retransmission indicated by the DCI, includes:
and receiving the relevant configuration information of retransmission indicated by the newly added domain of the DCI by the network side.
An embodiment of the present invention provides a data transmission method, as shown in fig. 2, the method includes:
step 201: the network equipment configures TB to be retransmitted to the terminal on at least two time slots;
wherein the HARQ function of the terminal is turned off.
Step 202: and the terminal receives the relevant configuration information of the retransmission sent by the network equipment.
Here, the retransmission-related configuration information indicates that the terminal TB is retransmitted to the terminal on at least two slots.
It should be noted that: the specific processing procedures of the network device and the terminal have been described in detail above, and are not described in detail here.
The data transmission method provided by the embodiment of the invention can be understood as a signal transmission enhancement scheme under the condition of HARQ disable, when the HARQ function of the terminal is closed, the network equipment configures the TB to be retransmitted to the terminal on at least two slots, and retransmits the TB through a plurality of slots, so that the reliability of data transmission can be ensured under the condition that the HARQ function of the terminal is closed.
The present invention will be described in further detail with reference to the following application examples.
In the application embodiment, how to indicate the relevant configuration information of retransmission to the terminal through DCI is described.
In the NR system, DCI formats related to scheduling of a Physical Downlink Shared Channel (PDSCH) are DCI format1-0 and DCI format 1-1, where HARQ-related fields are shown in table 2. Table 2 shows the domain and bit (bit) number related to HARQ in DCI format1-0 and DCI format 1-1.
TABLE 2
When the indication of the relevant configuration information of the retransmission is realized by multiplexing the domain related to the HARQ in the DCI format, the indication of a single item of information in the relevant configuration information of the retransmission can be completed by redefining a single domain in the DCI format, for example, redefining an RV domain to indicate the number of retransmissions, and redefining a PDSCH-to-HARQ feedback timing indicator domain to indicate the interval between multiple slots.
For example, in DCI format1-0, when the value of the RV field is 11, it indicates that the number of retransmissions is 4 (when the value is all 0, it indicates that transmission is 1), and when the value of the PDSCH-to-HARQ feedback timing indicator is 100, it indicates that the interval between slots is 4, as shown in fig. 3.
For another example, redefining the HARQ process number field indicates the number of retransmissions, and redefining the RV field to indicate the interval between slots.
When the indication of the relevant configuration information for retransmission is implemented by multiplexing the HARQ-related fields in the DCI format, the indication of a single item of information in the relevant configuration information for retransmission may also be accomplished by redefining multiple fields in the DCI format, for example, compared with a terrestrial network system, the number of retransmissions in an NTN system is more, and the number of bits may not be sufficient by using a single field in the DCI, so that a multiple-field joint indication may be used. For example, the joint indication retransmission times of the RV domain and the DAI domain are redefined, and the PUCCH resource indicator domain and the PDSCH-to-HARQ feedback timing indicator domain are redefined to indicate the interval between multiple slots.
For example, when the values in DCI format1-0 are shown in table 3, the number of retransmissions is 1 and the interval between the slots is 12 slots.
TABLE 3
When the indication of the relevant configuration information for retransmission is realized by multiplexing the domain relevant to HARQ in the DCI format, after the HARQ function of the terminal is turned off through RRC signaling, the domain relevant to HARQ in the DCI format may be partially reserved, that is, the domain relevant to HARQ is reserved, and at this time, the reserved domain may be redefined through RRC signaling to be used as an indication TB for retransmission on multiple slots. For example, in case of HARQ disable, in order to align DCI format1-0 and DCI format 1-1, the DAI field and PDSCH-to-HARQ feedback timing indicator field may be removed, because in DCI format 1-1, the two fields may be indicated as 0bit through RRC signaling, and at this time, the remaining HARQ-related fields in DCI format may be configured to indicate TB retransmission on multiple slots through RRC signaling, that is, the remaining HARQ-related fields in DCI format may be redefined through RRC signaling, so as to indicate the relevant configuration information of retransmission through these fields.
When the new domain is added in the DCI format to implement the indication of the relevant configuration information for retransmission, after the HARQ function of the terminal is turned off through RRC signaling, the domain related to HARQ in the DCI format needs to be removed, and the new domain is added to dynamically indicate the retransmission times and the intervals between multiple slots. For example, a repetition number field is added to indicate the number of TB retransmissions, and a repetition slot interval field is added to indicate the interval between multiple slots for TB retransmission.
The transmission delay in the NTN system is large, excessive HARQ processes require a large storage space of the receiving end, and frequent use of HARQ also results in increased data link jitter. Therefore, a HARQ disable mechanism in the NTN needs to be considered, when the network side configures UE HARQ off, there is no UL ACK/NACK feedback for downlink data transmission at this time, and to ensure data transmission reliability, a HARQ enhancement scheme is proposed in which the network side can configure TB for retransmission on multiple slots with intervals.
In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a data transmission apparatus, which is disposed on a network device, and as shown in fig. 4, the apparatus includes:
a configuration unit 41, configured to configure a TB to retransmit to a terminal on at least two slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
In one embodiment, as shown in fig. 4, the apparatus may further include:
a retransmission unit 42 configured to retransmit the TB to the terminal on at least two slots.
In an embodiment, the configuring unit 41 is configured to configure that a symbol position used for transmitting the TB in each of the at least two slots is the same.
In an embodiment, the configuration unit 41 is specifically configured to:
configuring a TB to retransmit to a terminal on at least two time slots in a semi-static mode;
alternatively, the first and second electrodes may be,
and configuring the TB to be retransmitted to the terminal on at least two time slots in a dynamic mode.
In an embodiment, the configuration unit 41 indicates the retransmitted related configuration information to the terminal through RRC signaling.
In an embodiment, the configuration unit 41 indicates the relevant configuration information of retransmission to the terminal through DCI.
Here, in an embodiment, when the relevant configuration information of retransmission is indicated to the terminal through DCI, the configuration unit 41 indicates the relevant configuration information of retransmission by multiplexing at least some of all domains related to HARQ in DCI.
Wherein, in an embodiment, the configuring unit 41 is further configured to redefine the at least part of the domain through RRC signaling.
In an embodiment, when the relevant configuration information of retransmission is indicated to the terminal through DCI, the configuration unit 41 indicates the relevant configuration information of retransmission through a new added domain in DCI.
In practical applications, the configuration unit 41 and the retransmission unit 42 can be implemented by a processor in a data transmission device in combination with a communication interface.
In order to implement the method on the terminal side in the embodiment of the present invention, an embodiment of the present invention further provides a data transmission device, which is disposed on a terminal, and as shown in fig. 5, the data transmission device includes:
a first receiving unit 51, configured to receive configuration information related to retransmission sent by a network side; the relevant configuration information of retransmission indicates that the terminal TB is retransmitted to the terminal on at least two time slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
In one embodiment, as shown in fig. 5, the apparatus may further include: a second receiving unit 52, configured to receive the TB retransmitted by the network side on at least two slots by using the relevant configuration information of the retransmission.
Wherein, in an embodiment, the second receiving unit 52 is configured to receive the retransmitted TB at the same symbol position in each of the at least two slots.
In an embodiment, the first receiving unit 51 is specifically configured to:
receiving relevant configuration information of retransmission indicated by RRC signaling at a network side;
alternatively, the first and second electrodes may be,
and receiving the relevant configuration information of retransmission indicated by the DCI by the network side.
Here, in an embodiment, the first receiving unit 51 receives configuration information related to retransmission indicated by multiplexing at least part of all domains related to HARQ in DCI on the network side.
In an embodiment, the first receiving unit 51 is further configured to receive the at least part of the domain redefined by the network side through RRC signaling.
In an embodiment, the first receiving unit 51 receives configuration information related to retransmission indicated by a newly added domain of DCI on the network side.
In practical applications, the first receiving unit 51 and the second receiving unit 52 can be implemented by a processor in a data transmission device in combination with a communication interface.
It should be noted that: in the data transmission device provided in the above embodiment, only the division of the program modules is exemplified when data transmission is performed, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the device may be divided into different program modules to complete all or part of the processing described above. In addition, the data transmission device and the data transmission method provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments and are not described herein again.
Based on the hardware implementation of the program module, and in order to implement the method on the network device side in the embodiment of the present invention, an embodiment of the present invention further provides a network device, as shown in fig. 6, where the network device 60 includes:
a first communication interface 61 capable of information interaction with a terminal;
and the first processor 62 is connected with the first communication interface 61 to implement information interaction with a terminal, and is used for executing a method provided by one or more technical solutions of the network device side when running a computer program. And the computer program is stored on the first memory 63.
Specifically, the first processor 62 is configured to configure a TB for retransmission to a terminal on at least two slots through the first communication interface 61; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
In an embodiment, the first processor 62 is further configured to retransmit a TB to the terminal over the first communication interface 61 in at least two slots.
In an embodiment, the first processor 62 is specifically configured to:
configuring a TB to retransmit to a terminal on at least two time slots in a semi-static mode;
alternatively, the first and second electrodes may be,
and configuring the TB to be retransmitted to the terminal on at least two time slots in a dynamic mode.
In an embodiment, the first processor 62 indicates the relevant configuration information of the retransmission to the terminal through DCI.
Here, in an embodiment, when the relevant configuration information of retransmission is indicated to the terminal through DCI, the first processor 62 indicates the relevant configuration information of retransmission by multiplexing at least some of all domains related to HARQ in DCI.
Wherein, in an embodiment, the first processor 62 is further configured to redefine the at least part of the domain by RRC signaling using the first communication interface 61.
In an embodiment, when the relevant configuration information of the retransmission is indicated to the terminal through the DCI, the first processor 62 indicates the relevant configuration information of the retransmission through a new added domain in the DCI.
It should be noted that: the specific processing procedures of the first processor 62 and the first communication interface 61 can be understood with reference to the above-described methods.
Of course, in practice, the various components of the network device 60 are coupled together by a bus system 64. It will be appreciated that the bus system 64 is used to enable communications among the components. The bus system 64 includes a power bus, a control bus, and a status signal bus in addition to the data bus. For clarity of illustration, however, the various buses are labeled as bus system 64 in fig. 6.
The first memory 63 in the embodiment of the present invention is used to store various types of data to support the operation of the network device 60. Examples of such data include: any computer program for operating on network device 60.
The method disclosed in the above embodiments of the present invention may be applied to the first processor 62, or implemented by the first processor 62. The first processor 62 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the first processor 62. The first Processor 62 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The first processor 62 may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the first memory 63, and the first processor 62 reads the information in the first memory 63 and, in conjunction with its hardware, performs the steps of the foregoing method.
In an exemplary embodiment, the network Device 60 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the foregoing methods.
Based on the hardware implementation of the program module, and in order to implement the method on the terminal side in the embodiment of the present invention, an embodiment of the present invention further provides a terminal, as shown in fig. 7, where the terminal 70 includes:
a second communication interface 71, which can perform information interaction with a network device;
and the second processor 72 is connected with the second communication interface 71 to implement information interaction with a network device, and is used for executing the method provided by one or more technical solutions of the terminal side when running a computer program. And the computer program is stored on the second memory 73.
Specifically, the second processor 72 is configured to receive, through the second communication interface 71, configuration information related to retransmission sent by a network side; the relevant configuration information of retransmission indicates that the terminal TB is retransmitted to the terminal on at least two time slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
In an embodiment, the second processor 72 is configured to receive a TB retransmitted by a network side over at least two slots through the second communication interface 71 by using the retransmitted related configuration information.
Wherein, in an embodiment, the second receiving unit 52 is configured to receive the retransmitted TB at the same symbol position in each of the at least two slots.
In an embodiment, the second processor 72 is specifically configured to:
receiving relevant configuration information of retransmission indicated by RRC signaling at a network side;
alternatively, the first and second electrodes may be,
and receiving the relevant configuration information of retransmission indicated by the DCI by the network side.
Here, in an embodiment, the second processor 72 receives configuration information related to retransmission indicated by multiplexing at least part of all domains related to HARQ in DCI on the network side.
In an embodiment, the second processor 72 is further configured to receive, through the second communication interface 71, the at least part of the domain redefined by the network side through RRC signaling.
In an embodiment, the second processor 72 receives configuration information related to retransmission indicated by a newly added field of DCI on the network side.
It should be noted that: the specific processing of the second processor 72 and the second communication interface 71 can be understood with reference to the above-described method.
Of course, in practice, the various components of the terminal 70 are coupled together by a bus system 74. It will be appreciated that the bus system 74 is used to enable communications among the components of the connection. The bus system 74 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 74 in fig. 7.
The second memory 73 in the embodiment of the present invention is used to store various types of data to support the operation of the terminal 70. Examples of such data include: any computer program for operating on the terminal 70.
The method disclosed in the above embodiments of the present invention may be applied to the second processor 72, or implemented by the second processor 72. The second processor 72 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the second processor 72. The second processor 72 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 72 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 73, and the second processor 72 reads the information in the second memory 73 and, in conjunction with its hardware, performs the steps of the foregoing method.
In an exemplary embodiment, the terminal 70 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for performing the aforementioned methods.
It is understood that the memories (first memory 63, second memory 73) of embodiments of the present invention may be either volatile or nonvolatile memories, and may include both volatile and nonvolatile memories. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The described memory for embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.
In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a data transmission system, as shown in fig. 8, where the system includes: network device 81 and terminal 82; wherein the content of the first and second substances,
the network device 81 is configured to configure a TB for retransmission to the terminal 82 on at least two timeslots;
the terminal 82 is configured to receive the relevant configuration information of the retransmission sent by the network device 81; the retransmitted related configuration information indicates that the terminal TB is retransmitted to the terminal 82 on at least two slots; wherein the content of the first and second substances,
the HARQ functionality of the terminal 82 is switched off.
It should be noted that the specific processing procedures of the network device 81 and the terminal 82 have been described in detail above, and are not described herein again.
In an exemplary embodiment, the present invention further provides a storage medium, specifically a computer-readable storage medium, for example, a first memory 63 storing a computer program, where the computer program is executable by the first processor 62 of the network device 60 to perform the steps of the network device side method. For example, the second memory 73 stores a computer program which can be executed by the second processor 72 of the terminal 70 to perform the steps of the terminal side method as described above. The computer readable storage medium may be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disk, or CD-ROM.
It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In addition, the technical solutions described in the embodiments of the present invention may be arbitrarily combined without conflict.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (26)
1. A data transmission method is applied to network equipment and comprises the following steps:
configuring a transmission block TB to be retransmitted to a terminal on at least two time slots; wherein the content of the first and second substances,
the hybrid automatic repeat request HARQ functionality of the terminal is turned off.
2. The method of claim 1, further comprising:
retransmitting the TB to the terminal on at least two slots.
3. The method of claim 1, wherein the at least two slots are configured with a slot interval.
4. The method of claim 1, wherein a symbol position configured for transmitting the TB in each of the at least two slots is the same.
5. The method of claim 1, wherein the configuration information related to the retransmission at least comprises:
the number of retransmissions;
retransmitting a slot interval of the TB.
6. The method of claim 1, wherein the configuring the TB is retransmitted to a terminal on at least two slots, comprising:
configuring a TB to retransmit to a terminal on at least two time slots in a semi-static mode;
alternatively, the first and second electrodes may be,
and configuring the TB to be retransmitted to the terminal on at least two time slots in a dynamic mode.
7. The method of claim 6, wherein configuring the TB for retransmission to the terminal in at least two slots in a semi-static manner comprises:
and indicating the retransmitted related configuration information to the terminal through Radio Resource Control (RRC) signaling.
8. The method of claim 6, wherein the dynamically configuring the TB for retransmission to the terminal over at least two slots comprises:
and indicating the relevant configuration information of retransmission to the terminal through Downlink Control Information (DCI).
9. The method of claim 8, wherein when the relevant configuration information for retransmission is indicated to the terminal through the DCI, the relevant configuration information for retransmission is indicated by multiplexing at least some of all domains related to HARQ in the DCI.
10. The method of claim 9, further comprising:
redefining the at least part of the domain by RRC signaling.
11. The method of claim 8, wherein when the relevant configuration information for retransmission is indicated to the terminal through the DCI, the relevant configuration information for retransmission is indicated through a new added domain in the DCI.
12. A data transmission method is applied to a terminal and comprises the following steps:
receiving relevant configuration information of retransmission sent by a network side; the relevant configuration information of retransmission indicates that the terminal TB is retransmitted to the terminal on at least two time slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
13. The method of claim 12, further comprising:
and receiving the TB retransmitted by the network side on at least two time slots by using the retransmitted related configuration information.
14. The method of claim 12, wherein the at least two slots are configured with a slot interval.
15. The method of claim 13, wherein the retransmitted TB is received at a same symbol position in each of the at least two slots.
16. The method according to claim 12, wherein the receiving of the configuration information related to the retransmission sent by the network side includes:
receiving relevant configuration information of retransmission indicated by RRC signaling at a network side;
alternatively, the first and second electrodes may be,
and receiving the relevant configuration information of retransmission indicated by the DCI by the network side.
17. The method of claim 16, wherein the receiving network side related to the configuration information of the retransmission indicated by the DCI comprises:
and the receiving network side multiplexes the related configuration information of retransmission indicated by at least part of domains in all domains related to the HARQ in the DCI.
18. The method of claim 17, further comprising:
receiving the at least part of the domain redefined by the network side through RRC signaling.
19. The method of claim 16, wherein the receiving network side related to the configuration information of the retransmission indicated by the DCI comprises:
and receiving the relevant configuration information of retransmission indicated by the newly added domain of the DCI by the network side.
20. A data transmission apparatus, comprising:
a configuration unit, configured to configure the TB for retransmission to the terminal on at least two slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
21. A data transmission apparatus, comprising:
receiving relevant configuration information of retransmission sent by a network side; the retransmitted related configuration information indicates that a terminal TB retransmits to the terminal on at least two time slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
22. A network device, comprising: a first processor and a first communication interface; wherein the content of the first and second substances,
the first processor is configured to configure, through the first communication interface, a TB for retransmission to a terminal on at least two timeslots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
23. A terminal, comprising: a second processor and a second communication interface; wherein the content of the first and second substances,
the second processor is configured to receive, through the second communication interface, retransmission-related configuration information sent by a network side; the relevant configuration information of retransmission indicates that the terminal TB is retransmitted to the terminal on at least two time slots; wherein the content of the first and second substances,
the HARQ function of the terminal is turned off.
24. A network device, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,
wherein the first processor is adapted to perform the steps of the method of any one of claims 1 to 11 when running the computer program.
25. A terminal, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,
wherein the second processor is adapted to perform the steps of the method of any of claims 12 to 19 when running the computer program.
26. A storage medium having stored thereon a computer program for performing the steps of the method of any one of claims 1 to 11 or for performing the steps of the method of any one of claims 12 to 19 when executed by a processor.
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| PCT/CN2020/103359 WO2021023008A1 (en) | 2019-08-08 | 2020-07-21 | Data transmission method and apparatus, related device, and storage medium |
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