CN110831164B - Data transmission method, data reception method, data transmission device, and data reception device - Google Patents
Data transmission method, data reception method, data transmission device, and data reception device Download PDFInfo
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- CN110831164B CN110831164B CN201810897953.0A CN201810897953A CN110831164B CN 110831164 B CN110831164 B CN 110831164B CN 201810897953 A CN201810897953 A CN 201810897953A CN 110831164 B CN110831164 B CN 110831164B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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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
- H04L1/1607—Details of the supervisory signal
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/008—Transmission of channel access control information with additional processing of random access related information at receiving side
Abstract
The invention provides a data sending method, a data sending device, a data receiving method, a data receiving device and communication equipment. The data transmission method applied to the base station comprises the following steps: receiving a channel access request signaling sent by a terminal; judging whether first-class data needs to be sent or not; and when the first type data needs to be transmitted, transmitting the channel access response signaling and the first type data to the terminal. By adopting the technical scheme of the invention, when the base station has the micro data to be sent, the micro data can be sent by using the signaling of the handshake mechanism, thereby improving the utilization efficiency of the frequency spectrum.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data sending method, a data sending device, a data receiving method, a data receiving device, and a communication device.
Background
Currently, development work of a 5 th generation mobile communication system (5G) is actively underway. According to the future application requirements, the 5G system needs to support a variety of service scenarios, including eMBB (Enhanced Mobile Broadband), URLLC (Ultra-reliable and Low Latency Communications), and MMTC (Massive Machine Type of Communication). Since the resources of the licensed spectrum are very limited, the 5G standard also utilizes the unlicensed spectrum for data transmission, which can provide a larger transmission bandwidth than the licensed spectrum, especially for application scenarios of large data volume such as the eMBB. However, the disadvantage of the unlicensed spectrum is also obvious, and since it should follow an LBT (Listen Before talk) mechanism, where the LBT mechanism is a channel access mechanism, because the availability of a channel on the unlicensed spectrum cannot be guaranteed at any moment, LBT requires that a channel is monitored Before data transmission, idle channel evaluation is performed, and data transmission is performed under the condition that the channel is guaranteed to be idle, so that the effect of guaranteeing the delay is not ideal.
In the standard setting process, there is a technical discussion that if there is data to be transmitted in the unlicensed band, LBT mechanism is followed, and in order to avoid unnecessary interference and waste of spectrum, a handshake protocol is used before data transmission. As shown in fig. 1, in an LBT mechanism, a UE (User Equipment) sends a CARQ (Channel Access Request) signaling to a gNB (base station), and the gNB feeds back a card (Channel Access Response) signaling, where G represents an uplink and downlink switching point in the LBT mechanism, MCOT (Maximum Channel Occupancy Time) is a Maximum Channel Occupancy Time, and establishment of a handshake mechanism is also for subsequent data transmission.
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 propose a data transmission method.
Another aspect of the present invention is to provide a data receiving method.
Yet another aspect of the present invention is to provide a data transmission apparatus.
Yet another aspect of the present invention is to provide a data receiving apparatus.
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 data transmission method is provided, which is applied to a base station, and the method includes: receiving a channel access request signaling sent by a terminal; judging whether first type data needs to be sent or not; and when the first type data needs to be transmitted, transmitting the channel access response signaling and the first type data to the terminal.
When the terminal has a large amount of data to send, in order to ensure that the communication is not interfered or the frequency spectrum is not wasted when the terminal sends the data, a handshake mechanism is established, for example, the terminal sends CARQ signaling to the base station. The base station receives CARQ signaling sent by the terminal, and when first-class data need to be sent to the terminal, the first-class data and the CARP signaling are aggregated together and sent to the terminal, wherein the first-class data are micro data and have low time delay, for example, 1 to 20 bits. By adopting the technical scheme of the invention, when the base station has the micro data to be sent, the micro data can be sent by using the signaling of the handshake mechanism, thereby improving the utilization efficiency of the frequency spectrum.
The data transmission method according to the present invention may further include the following technical features:
in the above technical solution, preferably, the method further includes: and receiving the second type data, the confirmation message of the first type data and the confirmation message of the channel access response signaling sent by the terminal.
In the technical scheme, for the confirmation messages of the first type data and the CARP signaling, the terminal can send the second type data (namely a large amount of data) together, so as to save the resource consumption of the base station and the terminal.
In any of the above technical solutions, preferably, the channel access response signaling includes a data identifier, and the data identifier is used to indicate that the channel access response signaling is sent simultaneously with the first type of data.
In the technical scheme, in the CARP signaling, an identification bit (data identification) can be used for indicating that the CARP signaling carries the micro data, so that the terminal can know that the CARP signaling and the micro data are sent together according to the data identification, and the accurate receiving of the data is ensured.
In any of the above technical solutions, preferably, a preset resource interval exists between the time-frequency resource location for sending the channel access response signaling and the time-frequency resource location for sending the first type of data; the transmission power of the preset resource interval is zero.
In the technical scheme, the CARP signaling and the micro data are separated by a preset resource interval, the preset resource interval is filled with '0', and the sending power of the preset resource interval is 0, so that the CARP signaling and the micro data cannot be influenced by each other when the base station sends the CARP signaling and the micro data, the terminal is ensured to correctly demodulate the CARP signaling and the micro data respectively, and the demodulation error is avoided.
In any of the above technical solutions, preferably, the channel access request signaling includes a time-frequency resource that needs to be occupied by the second type of data.
In the technical scheme, the CARQ signaling comprises time-frequency resources which need to be occupied when the terminal sends the second type of data, so that the base station can provide effective time-frequency resources for the terminal to send the second type of data.
According to another aspect of the present invention, a data receiving method is provided, which is applied to a terminal, and includes: judging whether first-class data needs to be sent or not; when first-class data needs to be sent, sending a channel access request signaling to a base station; and receiving channel access response signaling and second-class data sent by the base station.
When the terminal has a large amount of data (first type of data) to send, in order to ensure that the communication is not interfered when the terminal sends the data or ensure that the frequency spectrum is not wasted, a handshake mechanism is established, for example, the terminal sends CARQ signaling to the base station. When the base station has the second type of data to send, the second type of data is sent while feeding back the card signaling, wherein the second type of data is tiny data and has low time delay, for example, 1 to 20 bits. By adopting the technical scheme of the invention, when the base station has the micro data to be sent, the micro data can be sent to the terminal by using the signaling of the handshake mechanism, thereby improving the utilization efficiency of the frequency spectrum.
The data receiving method according to the present invention may further include the following technical features:
in the above technical solution, preferably, the method further includes: and sending the confirmation messages of the first type data, the second data and the channel access response signaling to the base station.
In the technical scheme, for the confirmation messages of the first type data and the CARP signaling, the terminal can send the second type data (namely a large amount of data) together so as to save the resource consumption of the terminal and the base station.
In any of the above technical solutions, preferably, the channel access response signaling includes a data identifier, and the data identifier is used to indicate that the channel access response signaling and the second type of data are simultaneously sent by the base station.
In the technical scheme, in the CARP signaling, an identification bit (data identification) can be used for indicating that the CARP signaling carries micro data, so that a terminal can know that the CARP signaling is sent together with the micro data according to the data identification, and the accurate receiving of the data is ensured.
In any of the above technical solutions, preferably, a preset resource interval exists between the time-frequency resource location for receiving the channel access response signaling and the time-frequency resource location for receiving the second type of data.
In the technical scheme, the CARP signaling and the micro data are separated by a preset resource interval, the preset resource interval is completely filled with '0', and the sending power of the preset resource interval is 0, so that the CARP signaling and the micro data are not influenced mutually when a base station sends the CARP signaling and the micro data, the terminal is ensured to correctly demodulate the CARP signaling and the micro data respectively, and demodulation errors are avoided.
In any of the above technical solutions, preferably, the channel access request signaling includes time-frequency resources that the first type of data needs to occupy.
In the technical scheme, the CARQ signaling comprises time-frequency resources which need to be occupied when the terminal sends the first type of data, so that the base station can be ensured to provide effective time-frequency resources for the terminal to send the first type of data.
According to still another aspect of the present invention, there is provided a data transmission apparatus applied to a base station, the apparatus including: the receiving module is used for receiving a channel access request signaling sent by a terminal; the judging module is used for judging whether the first type of data needs to be sent or not; and the sending module is used for sending the channel access response signaling and the first type of data to the terminal when the first type of data needs to be sent.
When the terminal has a large amount of data to send, in order to ensure that the communication is not interfered or the frequency spectrum is not wasted when the terminal sends the data, a handshake mechanism is established, for example, the terminal sends CARQ signaling to the base station. The base station receives a CARQ signaling sent by the terminal, and when first-class data needs to be sent to the terminal, the first-class data and the CARP signaling are aggregated together and sent to the terminal, wherein the first-class data are tiny data and have low time delay performance, such as 1 to 20 bits. By adopting the technical scheme of the invention, when the base station has the micro data to be sent, the micro data can be sent by using the signaling of the handshake mechanism, thereby improving the utilization efficiency of the frequency spectrum.
The data transmission device according to the present invention may further include:
in the foregoing technical solution, preferably, the receiving module is further configured to receive the second type of data, the acknowledgement message of the first type of data, and the acknowledgement message of the channel access response signaling sent by the terminal.
In the technical scheme, for the acknowledgement messages of the first type data and the CARP signaling, the terminal can send the second type data (namely a large amount of data) together, so as to save the resource consumption of the base station and the terminal.
In any of the above technical solutions, preferably, the channel access response signaling includes a data identifier, and the data identifier is used to indicate that the channel access response signaling and the first type of data are sent simultaneously.
In the technical scheme, in the CARP signaling, an identification bit (data identification) can be used for indicating that the CARP signaling carries the micro data, so that the terminal can know that the CARP signaling is sent together with the micro data according to the data identification, and the accurate receiving of the data is ensured.
In any of the above technical solutions, preferably, a preset resource interval exists between the time-frequency resource location for sending the channel access response signaling and the time-frequency resource location for sending the first type of data; the transmission power of the preset resource interval is zero.
In the technical scheme, the CARP signaling and the micro data are separated by a preset resource interval, the preset resource interval is completely filled with '0', and the sending power of the preset resource interval is 0, so that the CARP signaling and the micro data are not influenced mutually when a base station sends the CARP signaling and the micro data, the terminal is ensured to correctly demodulate the CARP signaling and the micro data respectively, and demodulation errors are avoided.
In any of the above technical solutions, preferably, the channel access request signaling includes a time-frequency resource that needs to be occupied by the second type of data.
In the technical scheme, the CARQ signaling comprises time-frequency resources which need to be occupied when the terminal sends the second type of data, so that the base station can provide effective time-frequency resources for the terminal to send the second type of data.
According to another aspect of the present invention, a data receiving apparatus applied to a terminal is provided, the apparatus including: the judging module is used for judging whether the first type of data needs to be sent or not; the sending module is used for sending a channel access request signaling to the base station when the first type of data needs to be sent; and the receiving module is used for receiving the channel access response signaling and the second type of data sent by the base station.
When the terminal has a large amount of data (first class data) to be transmitted, in order to ensure that the communication is not interfered when the terminal transmits the data or ensure that the frequency spectrum is not wasted, the data receiving device provided by the invention establishes a handshake mechanism, for example, the terminal transmits CARQ signaling to the base station. When the base station has the second type of data to send, the second type of data is sent while feeding back the card signaling, wherein the second type of data is tiny data and has low time delay, for example, 1 to 20 bits. By adopting the technical scheme of the invention, when the base station has the micro data to be sent, the micro data can be sent to the terminal by using the signaling of the handshake mechanism, thereby improving the utilization efficiency of the frequency spectrum.
The data receiving apparatus according to the present invention may further include:
in the foregoing technical solution, preferably, the sending module is further configured to send the acknowledgment messages of the first type data and the second data and the acknowledgment message of the channel access response signaling to the base station.
In the technical scheme, for the acknowledgement messages of the first type data and the CARP signaling, the terminal can send the second type data (namely a large amount of data) together, so as to save the resource consumption of the terminal and the base station.
In any of the above technical solutions, preferably, the channel access response signaling includes a data identifier, and the data identifier is used to indicate that the channel access response signaling and the second type of data are simultaneously sent by the base station.
In the technical scheme, in the CARP signaling, an identification bit (data identification) can be used for indicating that the CARP signaling carries the micro data, so that the terminal can know that the CARP signaling is sent together with the micro data according to the data identification, and the accurate receiving of the data is ensured.
In any of the above technical solutions, preferably, a preset resource interval exists between the time-frequency resource location for receiving the channel access response signaling and the time-frequency resource location for receiving the second type of data.
In the technical scheme, the CARP signaling and the micro data are separated by a preset resource interval, the preset resource interval is completely filled with '0', and the sending power of the preset resource interval is 0, so that the CARP signaling and the micro data are not influenced mutually when a base station sends the CARP signaling and the micro data, the terminal is ensured to correctly demodulate the CARP signaling and the micro data respectively, and demodulation errors are avoided.
In any of the above technical solutions, preferably, the channel access request signaling includes time-frequency resources that the first type of data needs to occupy.
In the technical scheme, the CARQ signaling comprises time-frequency resources which need to be occupied when the terminal sends the first type of data, so that the base station can be ensured to provide effective time-frequency resources for the terminal to send the first type of data.
According to a further aspect of the present invention, there is provided a communication device, comprising the data transmission apparatus according to any one of the above-mentioned technical solutions; or a data receiving device according to any of the above-mentioned technical solutions.
The communication device provided by the present invention includes the data transmitting apparatus according to any of the above-mentioned technical aspects or the data receiving apparatus according to any of the above-mentioned technical aspects, and can achieve all the advantageous effects of the data transmitting apparatus according to any of the above-mentioned technical aspects or the data receiving apparatus according to any of the above-mentioned technical aspects.
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. 1 is a diagram showing a handshake mechanism in the related art;
FIG. 2 is a flow diagram illustrating a data transmission method according to an embodiment of the invention;
fig. 3 shows a flow diagram of a data transmission method of another embodiment of the invention;
fig. 4 shows a flow chart of a data receiving method according to an embodiment of the invention;
fig. 5 shows a schematic flow chart of a data receiving method according to another embodiment of the invention;
FIG. 6 shows a schematic diagram of a data transmission apparatus of an embodiment of the present invention;
fig. 7 shows a schematic diagram of a data receiving apparatus of 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, taken in conjunction with the accompanying drawings and detailed description, is set forth below. It should be noted that the embodiments of the present invention and features of the embodiments 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 otherwise than as specifically described herein and, therefore, the scope of the present invention is not limited by the specific embodiments disclosed below.
An embodiment of a first aspect of the present invention provides a data transmission method applied to a base station, and fig. 2 illustrates a flow diagram of the data transmission method according to an embodiment of the present invention. Wherein, the method comprises the following steps:
and step 206, when the first type data needs to be sent, sending the channel access response signaling and the first type data to the terminal.
When the terminal has a large amount of data to send, in order to ensure that the communication is not interfered or the frequency spectrum is not wasted when the terminal sends the data, a handshake mechanism is established, for example, the terminal sends CARQ signaling to the base station. The base station receives a CARQ signaling sent by the terminal, and when first-class data needs to be sent to the terminal, the first-class data and the CARP signaling are aggregated together and sent to the terminal, wherein the first-class data are tiny data and have low time delay performance, such as 1 to 20 bits. By adopting the technical scheme of the invention, when the base station has the micro data to be sent, the micro data can be sent by using the signaling of the handshake mechanism, thereby improving the utilization efficiency of the frequency spectrum. The small data may be a part of a large amount of data that the base station needs to transmit.
In a specific embodiment, the terminal may be a network device such as a smart phone, a tablet computer, a notebook computer, a personal computer, and the like.
Fig. 3 is a flowchart illustrating a data transmission method according to another embodiment of the present invention. Wherein, the method comprises the following steps:
In this embodiment, for the acknowledgement messages for the first type of data and for the card signaling, the terminal may transmit the second type of data (i.e. a large amount of data) together, so as to save resource consumption of the base station and the terminal.
Preferably, the channel access response signaling includes a data identifier, and the data identifier is used to indicate that the channel access response signaling is transmitted simultaneously with the first type of data.
In this embodiment, in the card signaling, an identification bit (data identifier) may be used to indicate that it carries the micro data, so that the terminal can know that the card signaling is sent together with the micro data according to the data identifier, and accurate reception of the data is ensured.
Preferably, a preset resource interval exists between the time-frequency resource position for sending the channel access response signaling and the time-frequency resource position for sending the first type of data; the transmission power of the preset resource interval is zero.
In this embodiment, the card signaling and the small data are separated by a preset resource interval, the preset resource interval is completely filled with "0", and the transmission power of the preset resource interval is 0, so as to ensure that the base station does not affect each other when sending the card signaling and the small data, and ensure that the terminal correctly demodulates the card signaling and the small data, thereby avoiding demodulation errors.
Preferably, the channel access request signaling includes time-frequency resources occupied by the second type of data.
In this embodiment, the CARQ signaling includes a time-frequency resource that needs to be occupied when the terminal sends the second type of data, so as to ensure that the base station can provide effective time-frequency resources for the terminal to send the second type of data.
Fig. 4 is a schematic flow chart of a data receiving method according to an embodiment of the present invention. Wherein, the method comprises the following steps:
and step 406, receiving the channel access response signaling and the second type of data sent by the base station.
When the terminal has a large amount of data (first type of data) to send, in order to ensure that the communication is not interfered when the terminal sends the data or ensure that the frequency spectrum is not wasted, a handshake mechanism is established, for example, the terminal sends CARQ signaling to the base station. When the base station has the second type of data to send, the second type of data is sent while feeding back the card signaling, wherein the second type of data is tiny data and has low time delay, for example, 1 to 20 bits. By adopting the technical scheme of the invention, when the base station has the micro data to be sent, the micro data can be sent to the terminal by using the signaling of the handshake mechanism, thereby improving the utilization efficiency of the frequency spectrum. The small data may be a part of a large amount of data that the base station needs to transmit.
In a specific embodiment, the terminal may be a network device such as a smart phone, a tablet computer, a notebook computer, a personal computer, and the like.
Fig. 5 shows a flow chart of a data receiving method according to another embodiment of the present invention. Wherein, the method comprises the following steps:
In this embodiment, for the acknowledgement messages for the first type of data and for the card signaling, the terminal may send the second type of data (i.e. a large amount of data) together, so as to save the resource consumption of the terminal and the base station.
Preferably, the channel access response signaling includes a data identifier, and the data identifier is used to indicate that the channel access response signaling and the second type of data are simultaneously transmitted by the base station.
In this embodiment, in the card signaling, an identification bit (data identification) may be used to indicate that the card signaling carries the micro data, so that the terminal can know that the card signaling is sent together with the micro data according to the data identification, and accurate reception of the data is ensured.
Preferably, a preset resource interval exists between the time-frequency resource location for receiving the channel access response signaling and the time-frequency resource location for receiving the second type of data.
In this embodiment, the card signaling and the small data are separated by a preset resource interval, the preset resource interval is completely filled with "0", and the transmission power of the preset resource interval is 0, so as to ensure that the base station does not affect each other when sending the card signaling and the small data, and ensure that the terminal correctly demodulates the card signaling and the small data, thereby avoiding demodulation errors.
Preferably, the channel access request signaling includes time-frequency resources occupied by the first type of data.
In this embodiment, the CARQ signaling includes a time-frequency resource that needs to be occupied when the terminal sends the first type of data, so as to ensure that the base station can provide effective time-frequency resources for the terminal to send the first type of data.
In an embodiment of the third aspect of the present invention, a data transmitting apparatus is provided, which is applied to a base station, and fig. 6 shows a schematic diagram of a data transmitting apparatus 60 according to an embodiment of the present invention. Wherein the device 60 comprises:
a receiving module 602, configured to receive a channel access request signaling sent by a terminal;
a determining module 604, configured to determine whether the first type of data needs to be sent;
a sending module 606, configured to send the channel access response signaling and the first type of data to the terminal when the first type of data needs to be sent.
In the data transmitting apparatus 60 provided by the present invention, when the terminal has a large amount of data to transmit, in order to ensure that the communication is not interfered when the terminal transmits data or ensure that the spectrum is not wasted, a handshake mechanism is established, for example, the terminal transmits a CARQ signaling to the base station. The base station receives a CARQ signaling sent by the terminal, and when first-class data needs to be sent to the terminal, the first-class data and the CARP signaling are aggregated together and sent to the terminal, wherein the first-class data are tiny data and have low time delay performance, such as 1 to 20 bits. By adopting the technical scheme of the invention, when the base station has the micro data to be sent, the micro data can be sent by using the signaling of the handshake mechanism, thereby improving the utilization efficiency of the frequency spectrum. The small data may be a part of a large amount of data that the base station needs to transmit.
In a specific embodiment, the terminal may be a network device such as a smart phone, a tablet computer, a notebook computer, a personal computer, and the like. The receiving module 602 may be a receiver or an antenna, the determining module 604 may be a central processing unit or a base station controller, and the sending module 606 may be a transmitter or an antenna.
Preferably, the receiving module 602 is further configured to receive the second type data, the acknowledgement message of the first type data, and the acknowledgement message of the channel access response signaling sent by the terminal.
In this embodiment, for the acknowledgement messages for the first type of data and for the card signaling, the terminal may send the second type of data (i.e. a large amount of data) together, so as to save resource consumption of the base station and the terminal.
Preferably, the channel access response signaling includes a data identifier, and the data identifier is used to indicate that the channel access response signaling is transmitted simultaneously with the first type of data.
In this embodiment, in the card signaling, an identification bit (data identification) may be used to indicate that it carries the microdata, so that the terminal may know that the card signaling is sent together with the microdata according to the data identification, thereby ensuring accurate reception of the data.
Preferably, a preset resource interval exists between the time-frequency resource position for sending the channel access response signaling and the time-frequency resource position for sending the first type of data; the transmission power of the preset resource interval is zero.
In this embodiment, the CARP signaling and the small data are separated by a preset resource interval, the preset resource interval is completely filled with "0", and the transmission power of the preset resource interval is 0, so that it is ensured that the base station does not affect each other when transmitting the CARP signaling and the small data, and that the terminal correctly demodulates the CARP signaling and the small data, respectively, thereby avoiding demodulation errors.
Preferably, the channel access request signaling includes time-frequency resources occupied by the second type of data.
In this embodiment, the CARQ signaling includes a time-frequency resource that needs to be occupied when the terminal sends the second type of data, so as to ensure that the base station can provide effective time-frequency resources for the terminal to send the second type of data.
In an embodiment of the fourth aspect of the present invention, a data receiving apparatus is provided, which is applied to a terminal, and fig. 7 shows a schematic diagram of a data receiving apparatus 70 according to an embodiment of the present invention. Wherein the device 70 comprises:
a judging module 702, configured to judge whether first-class data needs to be sent;
a sending module 704, configured to send a channel access request signaling to a base station when first-class data needs to be sent;
a receiving module 706, configured to receive the channel access response signaling and the second type of data sent by the base station.
When the terminal has a large amount of data (first type of data) to send, in order to ensure that the terminal does not interfere with the communication or ensure that the spectrum is not wasted when sending data, the data receiving apparatus 70 of the present invention establishes a handshake mechanism, such as the terminal sends a CARQ signaling to the base station. When the base station has the second type of data to send, the second type of data is sent while feeding back the card signaling, wherein the second type of data is tiny data and has low time delay, for example, 1 to 20 bits. By adopting the technical scheme of the invention, when the base station has the micro data to be sent, the micro data can be sent to the terminal by using the signaling of the handshake mechanism, thereby improving the utilization efficiency of the frequency spectrum. The small data may be a part of a large amount of data that the base station needs to transmit.
In a specific embodiment, the terminal may be a network device such as a smart phone, a tablet computer, a notebook computer, a personal computer, and the like. The determining module 702 may be a central processing unit or a baseband processor, etc., the sending module 704 may be a transmitter or an antenna, etc., and the receiving module 706 may be a receiver or an antenna, etc.
Preferably, the sending module 704 is further configured to send the acknowledgement message of the first type data and the second data and the acknowledgement message of the channel access response signaling to the base station.
In this embodiment, for the acknowledgement messages for the first type of data and for the card signaling, the terminal may send the second type of data (i.e. a large amount of data) together, so as to save the resource consumption of the terminal and the base station.
Preferably, the channel access response signaling comprises a data identifier, and the data identifier is used for indicating that the channel access response signaling and the second type of data are simultaneously transmitted by the base station.
In this embodiment, in the card signaling, an identification bit (data identification) may be used to indicate that the card signaling carries the micro data, so that the terminal can know that the card signaling is sent together with the micro data according to the data identification, and accurate reception of the data is ensured.
Preferably, a preset resource interval exists between the time-frequency resource location for receiving the channel access response signaling and the time-frequency resource location for receiving the second type of data.
In this embodiment, the card signaling and the small data are separated by a preset resource interval, the preset resource interval is completely filled with "0", and the transmission power of the preset resource interval is 0, so as to ensure that the base station does not affect each other when sending the card signaling and the small data, and ensure that the terminal correctly demodulates the card signaling and the small data, thereby avoiding demodulation errors.
Preferably, the channel access request signaling includes time-frequency resources occupied by the first type of data.
In this embodiment, the CARQ signaling includes a time-frequency resource that needs to be occupied when the terminal sends the first type of data, so as to ensure that the base station can provide effective time-frequency resources for the terminal to send the first type of data.
An embodiment of a fifth aspect of the present invention provides a communication device, including the data transmitting apparatus according to any of the above embodiments; or a data receiving device as in any of the embodiments described above.
The communication device provided by the present invention includes the data transmission apparatus according to any of the above embodiments or the data reception apparatus according to any of the above embodiments, and can achieve all the advantages of the data transmission apparatus according to any of the above embodiments or the data reception apparatus according to 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 according to specific situations by those of ordinary skill in the art.
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 (17)
1. A data transmission method, applied to a base station, the method comprising:
receiving a channel access request signaling sent by a terminal;
judging whether first-class data needs to be sent or not;
when the first type of data needs to be sent, sending a channel access response signaling and the first type of data to the terminal;
receiving second-class data sent by the terminal, a confirmation message of the first-class data and a confirmation message of the channel access response signaling;
the channel access request signaling comprises time-frequency resources occupied by the second type of data.
2. The data transmission method according to claim 1,
the channel access response signaling comprises a data identifier, and the data identifier is used for indicating that the channel access response signaling and the first type of data are simultaneously transmitted.
3. The data transmission method according to claim 1 or 2,
a preset resource interval exists between the time-frequency resource position for sending the channel access response signaling and the time-frequency resource position for sending the first type of data;
the transmission power of the preset resource interval is zero.
4. A data receiving method, applied to a terminal, the method comprising:
judging whether first-class data needs to be sent or not;
when the first type of data needs to be sent, sending a channel access request signaling to a base station;
receiving a channel access response signaling and second-class data sent by the base station;
sending the confirmation messages of the first type data and the second type data and the confirmation message of the channel access response signaling to the base station;
the channel access request signaling comprises time-frequency resources required to be occupied by the first type of data.
5. The data receiving method according to claim 4,
the channel access response signaling comprises a data identifier, and the data identifier is used for indicating that the channel access response signaling and the second type of data are simultaneously transmitted by the base station.
6. The data receiving method according to claim 4 or 5,
and a preset resource interval exists between the time frequency resource position for receiving the channel access response signaling and the time frequency resource position for receiving the second type of data.
7. A data transmission apparatus, applied to a base station, the apparatus comprising:
the receiving module is used for receiving a channel access request signaling sent by a terminal;
the judging module is used for judging whether the first type of data needs to be sent or not;
and the sending module is used for sending the channel access response signaling and the first type of data to the terminal when the first type of data needs to be sent.
8. The data transmission apparatus according to claim 7,
the receiving module is further configured to receive second type data sent by the terminal, an acknowledgement message of the first type data, and an acknowledgement message of the channel access response signaling.
9. The data transmission apparatus according to claim 7,
the channel access response signaling comprises a data identifier, and the data identifier is used for indicating that the channel access response signaling and the first type of data are simultaneously transmitted.
10. The apparatus according to any of claims 7 to 9, wherein a predetermined resource interval exists between the time-frequency resource location for transmitting the channel access response signaling and the time-frequency resource location for transmitting the first type of data;
the transmission power of the preset resource interval is zero.
11. The apparatus according to claim 8, wherein the channel access request signaling includes time-frequency resources that need to be occupied by the second type of data.
12. A data receiving apparatus, applied to a terminal, the apparatus comprising:
the judging module is used for judging whether the first type of data needs to be sent or not;
a sending module, configured to send a channel access request signaling to a base station when the first type of data needs to be sent;
and the receiving module is used for receiving the channel access response signaling and the second type of data sent by the base station.
13. The data receiving apparatus according to claim 12,
the sending module is further configured to send the acknowledgment messages of the first type of data and the second type of data and the acknowledgment message of the channel access response signaling to the base station.
14. The data receiving apparatus according to claim 12,
the channel access response signaling comprises a data identifier, and the data identifier is used for indicating that the channel access response signaling and the second type of data are simultaneously transmitted by the base station.
15. The data receiving apparatus according to any of claims 12 to 14, wherein a preset resource interval exists between the time-frequency resource location for receiving the channel access response signaling and the time-frequency resource location for receiving the second type of data.
16. The data receiving apparatus according to any of claims 12 to 14, wherein the channel access request signaling comprises time-frequency resources that need to be occupied by the first type of data.
17. A communication device, comprising:
the data transmission apparatus according to any one of claims 7 to 11; or
A data receiving device as claimed in any one of claims 12 to 16.
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