CN110635872A - Configuration method of data repeated transmission information and data repeated receiving method - Google Patents
Configuration method of data repeated transmission information and data repeated receiving method Download PDFInfo
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- CN110635872A CN110635872A CN201810657729.4A CN201810657729A CN110635872A CN 110635872 A CN110635872 A CN 110635872A CN 201810657729 A CN201810657729 A CN 201810657729A CN 110635872 A CN110635872 A CN 110635872A
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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
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1896—ARQ related signaling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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Abstract
The invention provides a configuration method and a configuration device for data repeated transmission information, a method and a device for data repeated receiving, and communication equipment. The configuration method of the data repeat transmission information for the base station comprises the following steps: acquiring a data transmission information table in a protocol and acquiring transmission information of duplicate data of high-reliability low-delay data; selecting an indicator corresponding to the transmission information in the data transmission information table; and loading the indicator in the downlink control information, and sending the downlink control information to the terminal. By adopting the technical scheme of the invention, the configuration and the sending mode of the transmission information of the repeated data are optimized, so that the bit size of DCI (Downlink control information) is reduced when the data are repeatedly sent; on the other hand, the terminal can quickly locate the position of the repeated data sent by the base station, and the demodulation of the data is completed, so that the reliability and the effectiveness of the URLLC data transmission are improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for configuring data retransmission information, a method and an apparatus for receiving data repeatedly, and a communication device.
Background
Currently, development work of a 5 th generation mobile communication system (5G) is actively underway. According to future application requirements, the 5G system needs to support a variety of service scenarios, wherein communication scenarios with high reliability and Low Latency (URLLC) such as unmanned driving, industrial automation and the like are receiving wide attention. Generally, URLLC data has very high burstiness and high requirement on delay, so that this type of data has very high resource scheduling priority. The solution proposed at present for the transmission of URLLC data is: when the URLLC data arrives, the 5G base station immediately schedules the URLLC data, that is, performs puncturing transmission in an enhanced mobile broadband (eMBB) data block in which resource allocation has been completed, so as to realize the fastest data transfer, and further meet the requirement of the URLLC data on time delay. Following behavior examples, once the base station has URLLC data to send to the terminal, the base station may start scheduling on any OFDM (Orthogonal Frequency Division Multiplexing) symbol of a slot, instead of starting scheduling from the start boundary of the slot as in the case of normal data, and in the case of resource limitation, the base station may even puncture the normal data being transmitted to make up resources for URLLC data transmission.
After the delay requirement of the URLLC data transmission is solved, the industry gradually turns to research on how to meet the reliability requirement of the URLLC, and currently, the reliability research for the URLLC is still in the initial stage of discussion, and the proposed solutions mainly include two kinds, one is a power control scheme, that is, data of the URLLC is always transmitted at a relatively high power, but the gain of the scheme is not obvious for UEs (User Equipment) at the cell edge because the transmission power cannot be unlimitedly high (i.e., cannot exceed the threshold of power transmission in the cell) to avoid causing interference to UEs in neighboring cells. Another scheme is to use a repeated transmission mode, that is, the base station transmits the URLLC data to be transmitted to the terminal repeatedly, and transmits the same URLLC data in a plurality of different frequency domain resources or time domain resources, as shown in fig. 1a and fig. 1b, respectively, that is, transmits duplicate data of the URLLC data (body data) in other time frequency resources on the basis of initial scheduling, so as to obtain frequency domain or time domain transmit diversity gain, thereby improving the demodulation success rate of the data at the receiving end, and simultaneously avoiding the time delay of the existing HARQ (Hybrid Automatic Repeat request )/ACK (Acknowledgement character) feedback retransmission mechanism. In the frequency domain or time domain retransmission scheme, Downlink Control Information (DCI) is required to indicate a plurality of sets of frequency or time domain resources occupied by a plurality of copy data. However, at present, the sending position of the duplicate data is not determined, and if the sending position information of multiple duplicate data is completely carried in DCI information, the bit size of the DCI is relatively large, and the increased data size increases the difficulty of blind detection and demodulation of the DCI at the terminal side.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, an aspect of the present invention is to provide a method for configuring data retransmission information.
Another aspect of the present invention is to provide a method of data repeated reception.
Still another aspect of the present invention is to provide an apparatus for configuring data retransmission information.
Yet another aspect of the present invention is to provide an apparatus for data repeated reception.
Yet another aspect of the present invention is to provide a communication device.
In view of this, according to an aspect of the present invention, a method for configuring data retransmission information is provided, where the method is used in a base station, and includes: acquiring a data transmission information table in a protocol and acquiring transmission information of duplicate data of high-reliability low-delay data; selecting an indicator corresponding to the transmission information in the data transmission information table; and loading the indicator in the downlink control information, and sending the downlink control information to the terminal.
According to the configuration method of the data repeated transmission information, the base station acquires the data transmission information table in the protocol and acquires the transmission information of the copy data of the URLLC data, namely the transmission needs (such as the sending times of the copy data, the repeated position and the like). And the base station acquires an indicator which indicates the transmission information in the data transmission information table, places the indicator in the DCI and sends the indicator to the terminal. By adopting the technical scheme of the invention, the configuration and the sending mode of the transmission information of the repeated data are optimized, so that the bit size of DCI (Downlink control information) is reduced when the data are repeatedly sent; on the other hand, the terminal can quickly locate the position of the repeated data sent by the base station, and the demodulation of the data is completed, so that the reliability and the effectiveness of the URLLC data transmission are improved.
The configuration method of the data repeat transmission information according to the present invention may further have the following technical features:
in the above technical solution, preferably, the transmission information includes one or a combination of the following: the number of transmission times of the duplicate data, the repetitive transmission region, the transmission frequency domain position shift, or the transmission time domain position shift.
In this technical solution, the transmission information includes but is not limited to: the method comprises the steps that the repeated transmission times of the URLLC data, the repeated transmission area (frequency domain or time domain) of the URLLC data and the position deviation in the frequency domain or the time domain are carried out, different transmission information corresponds to different indicators, and the base station sends the indicators to the terminal, so that the terminal can quickly locate the position of repeated data.
In any of the above technical solutions, preferably, the method further includes: and sending the high-reliability low-delay data to the terminal and sending the duplicate data according to the transmission information.
In the technical scheme, the base station sends the URLLC data to the terminal and sends the copy data of the URLLC data according to the transmission information, so that the demodulation success rate of the URLLC data at the receiving end is improved, and meanwhile, the time delay of the conventional HARQ/ACK feedback retransmission mechanism can be avoided.
In any of the above technical solutions, preferably, the step of sending the downlink control information to the terminal specifically includes: and sending the downlink control information to the terminal once or for many times.
In the technical scheme, the DCI carrying the indicator can be transmitted once or for multiple times, so that the terminal can receive the DCI and the reliability of transmission is improved. In the present invention, the order of transmitting DCI and transmission data is not limited, and DCI may be transmitted before transmission of data, may be transmitted after transmission of data, or may be transmitted simultaneously with transmission of data.
According to another aspect of the present invention, a method for data repeated reception is provided, which is used for a terminal, and the method includes: receiving and demodulating a downlink control information acquisition indicator and acquiring a data transmission information table in a protocol; selecting transmission information corresponding to the indicator in a data transmission information table; receiving the high-reliability low-delay data and receiving the duplicate data of the high-reliability low-delay data according to the transmission information.
The terminal receives and demodulates the DCI sent by the base station, thereby acquiring the indicator in the bearer and the DCI, acquiring the data transmission information table in the protocol, and acquiring the transmission information indicated by the indicator by the terminal according to the data transmission information table. Further, URLLC data is received and a copy of the URLLC data is received in accordance with the transmission information. By adopting the technical scheme of the invention, the terminal can quickly locate the position of the repeated data sent by the base station, so that the DCI and the user data can be quickly demodulated by the URLLC terminal, and the transmission reliability of the URLLC data is improved.
The above method for repeatedly receiving data according to the present invention may further have the following technical features:
in the above technical solution, preferably, the transmission information includes one or a combination of the following: the number of transmission times of the duplicate data, the repetitive transmission region, the transmission frequency domain position shift, or the transmission time domain position shift.
In this technical solution, the transmission information includes but is not limited to: the number of times of repeated transmission of URLLC data, the position offset of a repeated transmission region (frequency domain or time domain) of the URLLC data in the frequency domain or the time domain, different transmission information corresponds to different indicators, and the terminal can quickly locate the position of the repeated data according to the indicators.
In any of the above technical solutions, preferably, if the demodulation of the high-reliability low-delay data is successful before or during the reception or demodulation of the duplicate data, the reception or demodulation of the duplicate data is stopped.
In the technical scheme, the terminal receives the duplicate data at the corresponding time-frequency position according to the transmission information of the duplicate data. If the URLLC data (body data) has been successfully demodulated before the reception or demodulation of the replica data, the reception or demodulation of the replica data can be stopped, saving terminal resources.
According to another aspect of the present invention, an apparatus for configuring data retransmission information is provided, where the apparatus is used for a base station, and includes: the information acquisition module is used for acquiring a data transmission information table in a protocol and acquiring transmission information of duplicate data of high-reliability low-delay data; selecting an indicator corresponding to the transmission information in the data transmission information table; and the sending module is used for loading the indicator in the downlink control information and sending the downlink control information to the terminal.
According to the configuration device for the repeated data transmission information, provided by the invention, the base station acquires the data transmission information table in the protocol and acquires the transmission information of the duplicate data of the URLLC data, namely the transmission needs (such as the sending times of the duplicate data, the repeated position and the like). And the base station acquires an indicator which indicates the transmission information in the data transmission information table, places the indicator in the DCI and sends the indicator to the terminal. By adopting the technical scheme of the invention, the configuration and the sending mode of the transmission information of the repeated data are optimized, so that the bit size of DCI (Downlink control information) is reduced when the data are repeatedly sent; on the other hand, the terminal can quickly locate the position of the repeated data sent by the base station, and the demodulation of the data is completed, so that the reliability and the effectiveness of the URLLC data transmission are improved.
The configuration device for repeatedly transmitting data information according to the present invention may further have the following technical features:
in the above technical solution, preferably, the transmission information includes one or a combination of the following: the number of transmission times of the duplicate data, the repetitive transmission region, the transmission frequency domain position shift, or the transmission time domain position shift.
In this technical solution, the transmission information includes but is not limited to: the method comprises the steps that the repeated transmission times of the URLLC data, the repeated transmission area (frequency domain or time domain) of the URLLC data and the position deviation in the frequency domain or the time domain are carried out, different transmission information corresponds to different indicators, and the base station sends the indicators to the terminal, so that the terminal can quickly locate the position of repeated data.
In any of the above technical solutions, preferably, the sending module is further configured to send high-reliability low-latency data to the terminal and send duplicate data according to the transmission information.
In the technical scheme, the base station sends the URLLC data to the terminal and sends the copy data of the URLLC data according to the transmission information, so that the demodulation success rate of the URLLC data at the receiving end is improved, and meanwhile, the time delay of the conventional HARQ/ACK feedback retransmission mechanism can be avoided.
In any of the above technical solutions, preferably, the sending module is specifically configured to send the downlink control information to the terminal one or more times.
In the technical scheme, the DCI carrying the indicator can be transmitted once or for multiple times, so that the terminal can receive the DCI and the reliability of transmission is improved. In the present invention, the order of transmitting DCI and transmission data is not limited, and DCI may be transmitted before transmission of data, may be transmitted after transmission of data, or may be transmitted simultaneously with transmission of data.
According to another aspect of the present invention, an apparatus for data repeated reception is provided, for a terminal, the apparatus comprising: the information acquisition module is used for receiving and demodulating a downlink control information acquisition indicator and acquiring a data transmission information table in a protocol; selecting transmission information corresponding to the indicator in a data transmission information table; and the receiving and demodulating module is used for receiving the high-reliability low-delay data and receiving the duplicate data of the high-reliability low-delay data according to the transmission information.
According to the device for repeatedly receiving data, the terminal receives and demodulates the DCI sent by the base station, so that the indicator in the bearer and the DCI is obtained, the data transmission information table is obtained in the protocol, and the terminal obtains the transmission information indicated by the indicator by contrasting the data transmission information table. Further, URLLC data is received and a copy of the URLLC data is received in accordance with the transmission information. By adopting the technical scheme of the invention, the terminal can quickly locate the position of the repeated data sent by the base station, so that the DCI and the user data can be quickly demodulated by the URLLC terminal, and the transmission reliability of the URLLC data is improved.
The above apparatus for repeatedly receiving data according to the present invention may further have the following technical features:
in the above technical solution, preferably, the transmission information includes one or a combination of the following: the number of transmission times of the duplicate data, the repetitive transmission region, the transmission frequency domain position shift, or the transmission time domain position shift.
In this technical solution, the transmission information includes but is not limited to: the number of times of repeated transmission of URLLC data, the position offset of a repeated transmission region (frequency domain or time domain) of the URLLC data in the frequency domain or the time domain, different transmission information corresponds to different indicators, and the terminal can quickly locate the position of the repeated data according to the indicators.
In any of the above technical solutions, preferably, the receiving and demodulating module is further configured to stop receiving or demodulating the duplicate data if the demodulation of the high-reliability low-latency data is successful before or during receiving or demodulating the duplicate data.
In the technical scheme, the terminal receives the duplicate data at the corresponding time-frequency position according to the transmission information of the duplicate data. If the URLLC data (body data) has been successfully demodulated before the reception or demodulation of the replica data, the reception or demodulation of the replica data can be stopped, saving terminal resources.
According to a further aspect of the present invention, there is provided a communication device, comprising the configuration means of any one of the above for repeatedly transmitting information; or means for repeatedly receiving data of any of the above.
The communication equipment provided by the invention comprises a configuration device for data repeated transmission information of any technical scheme; or the apparatus for repeatedly receiving data according to any one of the above-described embodiments, it is possible to achieve all the advantageous effects of the apparatus for configuring information for repeatedly transmitting data according to any one of the above-described embodiments, or all the advantageous effects of the apparatus for repeatedly receiving data according to any one of the above-described embodiments.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1a is a diagram illustrating frequency domain repetitive transmission of data in a related embodiment;
FIG. 1b is a diagram illustrating a data time domain repetitive transmission in a related embodiment;
fig. 2 is a flow chart illustrating a configuration method of data retransmission information according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a configuration method of data retransmission information according to another embodiment of the present invention;
FIG. 4 is a flow diagram illustrating a method of repeated receipt of data according to one embodiment of the invention;
fig. 5 is a schematic diagram of a configuration apparatus for repeatedly transmitting data according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an apparatus for repeated reception of data according to an embodiment of the present invention;
FIG. 7a is a diagram illustrating an indicator indicating transmission information according to an embodiment of the present invention;
FIG. 7b is a diagram illustrating an indicator indicating transmitted information according to another embodiment of the present invention;
fig. 8a illustrates a schematic diagram of DCI repeated transmission in a frequency domain according to an embodiment of the present invention;
fig. 8b illustrates a schematic diagram of DCI repeated transmission in a time domain according to an embodiment of the present invention;
fig. 9 shows a schematic diagram of an apparatus for repeated reception of data according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
An embodiment of a first aspect of the present invention provides a method for configuring data retransmission information, which is used for a base station, and fig. 2 illustrates a flowchart of the method for configuring data retransmission information according to an embodiment of the present invention. Wherein, the method comprises the following steps:
and step 206, loading the indicator in the downlink control information, and sending the downlink control information to the terminal.
According to the configuration method of the data repeated transmission information, the base station acquires the data transmission information table in the protocol and acquires the transmission information of the copy data of the URLLC data, namely the transmission needs (such as the sending times of the copy data, the repeated position and the like). And the base station acquires an indicator which indicates the transmission information in the data transmission information table, places the indicator in the DCI and sends the indicator to the terminal. By adopting the technical scheme of the invention, the configuration and the sending mode of the transmission information of the repeated data are optimized, so that the bit size of DCI (Downlink control information) is reduced when the data are repeatedly sent; on the other hand, the terminal can quickly locate the position of the repeated data sent by the base station, and the demodulation of the data is completed, so that the reliability and the effectiveness of the URLLC data transmission are improved.
It should be noted that, the present invention does not limit the sequence of acquiring the data transmission information table in the protocol and acquiring the transmission information of the copy data of the URLLC data, and the data transmission information table may be read first and then the transmission information may be acquired, or the data transmission information table may be read after the transmission information is acquired.
Preferably, the transmission information includes one or a combination of the following: the number of transmission times of the duplicate data, the repetitive transmission region, the transmission frequency domain position shift, or the transmission time domain position shift.
In this embodiment, the transmission information includes, but is not limited to: the method comprises the steps that the repeated transmission times of the URLLC data, the repeated transmission area (frequency domain or time domain) of the URLLC data and the position deviation in the frequency domain or the time domain are carried out, different transmission information corresponds to different indicators, and the base station sends the indicators to the terminal, so that the terminal can quickly locate the position of repeated data.
Preferably, in step 206, the step of sending the downlink control information to the terminal specifically includes: and sending the downlink control information to the terminal once or for many times.
In this embodiment, the DCI carrying the indicator may be transmitted one or more times, so as to ensure that the terminal can receive the DCI, thereby improving the reliability of transmission. In the present invention, the order of transmitting DCI and transmission data is not limited, and DCI may be transmitted before transmission of data, may be transmitted after transmission of data, or may be transmitted simultaneously with transmission of data.
Fig. 3 is a flowchart illustrating a configuration method of data retransmission information according to another embodiment of the present invention. Wherein, the method comprises the following steps:
and 308, sending the high-reliability low-delay data to the terminal and sending the duplicate data according to the transmission information.
In the embodiment, the base station sends the URLLC data to the terminal and sends the copy data of the URLLC data according to the transmission information, thereby improving the demodulation success rate of the URLLC data at the receiving end, and simultaneously avoiding the time delay of the existing HARQ/ACK feedback retransmission mechanism.
Preferably, the transmission information includes one or a combination of the following: the number of transmission times of the duplicate data, the repetitive transmission region, the transmission frequency domain position shift, or the transmission time domain position shift.
Preferably, in step 306, the step of sending the downlink control information to the terminal specifically includes: and sending the downlink control information to the terminal once or for many times.
In a second aspect of the present invention, a method for repeatedly receiving data is provided, which is used for a terminal, and fig. 4 is a flowchart illustrating the method for repeatedly receiving data according to an embodiment of the present invention. Wherein, the method comprises the following steps:
The terminal receives and demodulates the DCI sent by the base station, thereby acquiring the indicator in the bearer and the DCI, acquiring the data transmission information table in the protocol, and acquiring the transmission information indicated by the indicator by the terminal according to the data transmission information table. Further, URLLC data is received and a copy of the URLLC data is received in accordance with the transmission information. By adopting the technical scheme of the invention, the terminal can quickly locate the position of the repeated data sent by the base station, so that the DCI and the user data can be quickly demodulated by the URLLC terminal, and the transmission reliability of the URLLC data is improved.
It should be noted that, the present invention does not limit the order of receiving and demodulating the DCI acquisition indicator and acquiring the data transmission information table in the protocol, and the data transmission information table may be read first and then the indicator is acquired, or the data transmission information table may be read after the indicator is acquired.
Preferably, the transmission information includes one or a combination of the following: the number of transmission times of the duplicate data, the repetitive transmission region, the transmission frequency domain position shift, or the transmission time domain position shift.
In this embodiment, the transmission information includes, but is not limited to: the number of times of repeated transmission of URLLC data, the position offset of a repeated transmission region (frequency domain or time domain) of the URLLC data in the frequency domain or the time domain, different transmission information corresponds to different indicators, and the terminal can quickly locate the position of the repeated data according to the indicators.
Preferably, if the demodulation of the high-reliability low-latency data is successful before or during the reception or demodulation of the duplicate data, the reception or demodulation of the duplicate data is stopped.
In this embodiment, the terminal receives the duplicate data at the corresponding time-frequency position according to the transmission information of the duplicate data. If the URLLC data (body data) has been successfully demodulated before the reception or demodulation of the replica data, the reception or demodulation of the replica data can be stopped, saving terminal resources.
In an embodiment of the third aspect of the present invention, a device for configuring data retransmission information is provided, which is used for a base station, and fig. 5 shows a schematic diagram of a device 50 for configuring data retransmission information according to an embodiment of the present invention. Wherein the device 50 comprises:
an information obtaining module 502, configured to obtain a data transmission information table in a protocol, and obtain transmission information of duplicate data of high-reliability low-latency data; selecting an indicator corresponding to the transmission information in the data transmission information table;
a sending module 504, configured to bear the indicator in the downlink control information, and send the downlink control information to the terminal.
According to the configuration device 50 for data repeat transmission information provided by the invention, the base station acquires the data transmission information table in the protocol and acquires the transmission information of the copy data of the URLLC data, namely the transmission needs (such as the sending times of the copy data, the repeat position and the like). And the base station acquires an indicator which indicates the transmission information in the data transmission information table, places the indicator in the DCI and sends the indicator to the terminal. By adopting the technical scheme of the invention, the configuration and the sending mode of the transmission information of the repeated data are optimized, so that the bit size of DCI (Downlink control information) is reduced when the data are repeatedly sent; on the other hand, the terminal can quickly locate the position of the repeated data sent by the base station, and the demodulation of the data is completed, so that the reliability and the effectiveness of the URLLC data transmission are improved.
It should be noted that, the present invention does not limit the sequence of acquiring the data transmission information table in the protocol and acquiring the transmission information of the copy data of the URLLC data, and the data transmission information table may be read first and then the transmission information may be acquired, or the data transmission information table may be read after the transmission information is acquired.
Preferably, the transmission information includes one or a combination of the following: the number of transmission times of the duplicate data, the repetitive transmission region, the transmission frequency domain position shift, or the transmission time domain position shift.
In this embodiment, the transmission information includes, but is not limited to: the method comprises the steps that the repeated transmission times of the URLLC data, the repeated transmission area (frequency domain or time domain) of the URLLC data and the position deviation in the frequency domain or the time domain are carried out, different transmission information corresponds to different indicators, and the base station sends the indicators to the terminal, so that the terminal can quickly locate the position of repeated data.
Preferably, the sending module 504 is further configured to send the high-reliability low-latency data to the terminal and send the duplicate data according to the transmission information.
In the embodiment, the base station sends the URLLC data to the terminal and sends the copy data of the URLLC data according to the transmission information, thereby improving the demodulation success rate of the URLLC data at the receiving end, and simultaneously avoiding the time delay of the existing HARQ/ACK feedback retransmission mechanism.
Preferably, the sending module 404 is specifically configured to send the downlink control information to the terminal one or more times.
In this embodiment, the DCI carrying the indicator may be transmitted one or more times, so as to ensure that the terminal can receive the DCI, thereby improving the reliability of transmission. In the present invention, the order of transmitting DCI and transmission data is not limited, and DCI may be transmitted before transmission of data, may be transmitted after transmission of data, or may be transmitted simultaneously with transmission of data.
In a fourth aspect of the present invention, an apparatus for data duplicate reception is proposed, which is used for a terminal, and fig. 6 shows a schematic diagram of an apparatus 60 for data duplicate reception according to an embodiment of the present invention. Wherein the device 60 comprises:
an information obtaining module 602, configured to receive and demodulate a downlink control information obtaining indicator, and obtain a data transmission information table in a protocol; selecting transmission information corresponding to the indicator in a data transmission information table;
the receiving and demodulating module 604 is configured to receive the high-reliability low-latency data and receive replica data of the high-reliability low-latency data according to the transmission information.
In the apparatus 60 for repeatedly receiving data provided by the present invention, the terminal receives and demodulates the DCI sent by the base station, thereby obtaining the indicator in the bearer and the DCI, and obtains the data transmission information table in the protocol, and the terminal obtains the transmission information indicated by the indicator by referring to the data transmission information table. Further, URLLC data is received and a copy of the URLLC data is received in accordance with the transmission information. By adopting the technical scheme of the invention, the terminal can quickly locate the position of the repeated data sent by the base station, so that the DCI and the user data can be quickly demodulated by the URLLC terminal, and the transmission reliability of the URLLC data is improved.
It should be noted that, the present invention does not limit the order of receiving and demodulating the DCI acquisition indicator and acquiring the data transmission information table in the protocol, and the data transmission information table may be read first and then the indicator is acquired, or the data transmission information table may be read after the indicator is acquired.
Preferably, the transmission information includes one or a combination of the following: the number of transmission times of the duplicate data, the repetitive transmission region, the transmission frequency domain position shift, or the transmission time domain position shift.
In this embodiment, the transmission information includes, but is not limited to: the number of times of repeated transmission of URLLC data, the position offset of a repeated transmission region (frequency domain or time domain) of the URLLC data in the frequency domain or the time domain, different transmission information corresponds to different indicators, and the terminal can quickly locate the position of the repeated data according to the indicators.
Preferably, the receiving and demodulating module is further configured to stop receiving or demodulating the duplicate data if the demodulation of the high-reliability low-latency data is successful before or during receiving or demodulating the duplicate data.
In this embodiment, the terminal receives the duplicate data at the corresponding time-frequency position according to the transmission information of the duplicate data. If the URLLC data (body data) has been successfully demodulated before the reception or demodulation of the replica data, the reception or demodulation of the replica data can be stopped, saving terminal resources.
In a specific embodiment of the present invention, the base station obtains the duplicate data transmission information table, selects one configuration in the information table according to the duplicate data transmission requirement, places an indicator pointing to the configuration in DCI, and transmits the DCI to the terminal, and the terminal receives the data duplicate at a corresponding time-frequency position according to the position information indicator received from the base station. The method comprises the following specific steps:
(1) the base station obtains (reads) a duplicate data transmission information table in the standard protocol, and as shown in table 1, selects a certain configuration in the transmission information table according to the transmission needs (including the number of times of transmitting the duplicate and the selected frequency domain or time domain position) for the duplicate data of the target terminal.
(2) And the base station acquires the indicator pointing to the selected configuration in the sending position information table, places the indicator in the DCI and sends the indicator to the terminal. For example, as shown in fig. 7a, the indicator is 1001, and the indicator corresponds to the repetition region in the transmission information table: in the frequency domain, the repetition frequency is 1 time, and the position is shifted by M subcarriers, so that the body data can be repeatedly transmitted on the frequency domain for 1 time (one copy data), and the position shift of each time is M subcarriers; as shown in fig. 7b, the indicator is 0011, and the indicator corresponds to the repetition region in the transmission information table: in the time domain, the repetition time is 2 times (two copies of data), and the position is shifted by +1 symbol, so that the body data is transmitted repeatedly in the time domain for 2 times, and the position shift is +1 symbol each time.
The base station may repeatedly transmit DCI, that is, the indicator may be transmitted multiple times. For example, as shown in fig. 8a, DCI is transmitted twice in the frequency domain; as shown in fig. 8b, DCI is transmitted three times in the time domain. It should be noted that the DCI may or may not be transmitted together with the data, and fig. 8a and 8b illustrate a case where the DCI is transmitted together with the data.
(3) The terminal receives and demodulates the DCI information acquisition indicator information.
(4) The terminal acquires (reads) a duplicate data transmission information table in the standard protocol, and acquires the duplicate data transmission information by comparing the indicator received from the base station terminal.
(5) And the terminal receives the duplicate data at the corresponding time-frequency position according to the duplicate data sending information. If the body data has been successfully demodulated before the duplicate data is received or demodulated, the reception of the duplicate data may be stopped, as shown in fig. 9, and the reception of the subsequent duplicate data is stopped when the body data has completed demodulation at time t 1.
TABLE 1
It should be noted that the technical solution of the present invention can reduce the size of DCI when data is repeatedly transmitted, so as to reduce the duration of DCI blind detection and power consumption. In the technical scheme, a duplicate data sending information table is set in a standard protocol, a plurality of duplicate data sending configurations exist in the table, a pointer with a number of bits points to the sending configuration, and the transmission of duplicate data sending position information is completed between a base station and a terminal through the pointer. The acquisition indicator information and the acquisition of the duplicate data transmission information table in the standard protocol have no sequence difference, and the information table can be read first and then the indicator of the base station end is waited for, or the information table can be read after the indicator is received. (5) The phrase "if the body data is successfully demodulated before the reception or demodulation of the replica data, the reception of the replica data may be stopped" is used to consider that if the replica data is time-domain repeated, the body data may have already been demodulated, the repeated data has not been received, and the reception and demodulation of the replica data may be stopped.
An embodiment of a fifth aspect of the present invention provides a communication device, including any one of the above configuration devices for repeatedly transmitting information; or means for repeatedly receiving data of any of the above.
The communication equipment provided by the invention comprises a configuration device for repeatedly transmitting information by data of any embodiment; or the device for repeatedly receiving data of any of the above embodiments, it is therefore possible to achieve all the advantages of the device for configuring the data repeated transmission information of any of the above embodiments, or all the advantages of the device for repeatedly receiving data of any of the above embodiments.
In the description herein, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly stated or limited otherwise; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A method for configuring data repeat transmission information, which is used for a base station, the method comprises:
acquiring a data transmission information table in a protocol and acquiring transmission information of duplicate data of the high-reliability low-delay data;
selecting an indicator corresponding to the transmission information in the data transmission information table;
and loading the indicator in downlink control information, and sending the downlink control information to a terminal.
2. The method for configuring data retransmission information according to claim 1,
the transmission information comprises one or the combination of the following: the transmission times, the repeated transmission areas, the transmission frequency domain position offset or the transmission time domain position offset of the replica data.
3. The method for configuring data retransmission information according to claim 1 or 2, further comprising:
and sending the high-reliability low-delay data to the terminal and sending the duplicate data according to the transmission information.
4. The method according to claim 1 or 2, wherein the step of sending the downlink control information to the terminal specifically includes:
and sending the downlink control information to the terminal once or for multiple times.
5. A method for repeated reception of data, for a terminal, the method comprising:
receiving and demodulating a downlink control information acquisition indicator and acquiring a data transmission information table in a protocol;
selecting transmission information corresponding to the indicator in the data transmission information table;
and receiving high-reliability low-delay data and receiving duplicate data of the high-reliability low-delay data according to the transmission information.
6. The method of claim 5, wherein the data is received repeatedly,
the transmission information comprises one or the combination of the following: the transmission times, the repeated transmission areas, the transmission frequency domain position offset or the transmission time domain position offset of the replica data.
7. The method of data repetition reception according to claim 5 or 6,
and stopping receiving or demodulating the duplicate data if the high-reliability low-delay data is successfully demodulated before or in the process of receiving or demodulating the duplicate data.
8. An apparatus for configuring data retransmission information, the apparatus being used for a base station, the apparatus comprising:
the information acquisition module is used for acquiring a data transmission information table in a protocol and acquiring transmission information of duplicate data of the high-reliability low-delay data; selecting an indicator corresponding to the transmission information in the data transmission information table;
and the sending module is used for bearing the indicator in the downlink control information and sending the downlink control information to the terminal.
9. The apparatus for configuring data retransmission information according to claim 8,
the transmission information comprises one or the combination of the following: the transmission times, the repeated transmission areas, the transmission frequency domain position offset or the transmission time domain position offset of the replica data.
10. The apparatus for configuring data retransmission information according to claim 8 or 9,
the sending module is further configured to send the high-reliability low-delay data to the terminal and send the duplicate data according to the transmission information.
11. The apparatus for configuring data retransmission information according to claim 8 or 9,
the sending module is specifically configured to send the downlink control information to the terminal one or more times.
12. An apparatus for repeated reception of data, the apparatus comprising:
the information acquisition module is used for receiving and demodulating a downlink control information acquisition indicator and acquiring a data transmission information table in a protocol; selecting transmission information corresponding to the indicator in the data transmission information table;
and the receiving and demodulating module is used for receiving the high-reliability low-delay data and receiving the duplicate data of the high-reliability low-delay data according to the transmission information.
13. The apparatus for repeated reception of data according to claim 12,
the transmission information comprises one or the combination of the following: the transmission times, the repeated transmission areas, the transmission frequency domain position offset or the transmission time domain position offset of the replica data.
14. The apparatus for repeated reception of data according to claim 12 or 13,
the receiving and demodulating module is further configured to stop receiving or demodulating the duplicate data if the demodulation of the high-reliability low-delay data is successful before or during receiving or demodulating the duplicate data.
15. A communication device, comprising:
the configuration device of data repetitive transmission information according to any one of claims 8 to 11; or
Apparatus for repeated reception of data according to any one of claims 12 to 14.
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