CN110650537B - Method for indicating reception of acknowledgement message frame and method for receiving acknowledgement message frame - Google Patents
Method for indicating reception of acknowledgement message frame and method for receiving acknowledgement message frame Download PDFInfo
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- CN110650537B CN110650537B CN201810670153.5A CN201810670153A CN110650537B CN 110650537 B CN110650537 B CN 110650537B CN 201810670153 A CN201810670153 A CN 201810670153A CN 110650537 B CN110650537 B CN 110650537B
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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
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a method and a device for indicating the reception of an acknowledgement message frame, a method and a device for receiving the acknowledgement message frame, and communication equipment. The method for indicating the reception of the acknowledgement message frame comprises the following steps: configuring at least two receiving time points and a time interval between any two receiving time points in the downlink control information; and in the unauthorized frequency band, sending downlink control information to the terminal so that the terminal receives the confirmation message frame according to the receiving time point and the time interval. By adopting the technical scheme of the invention, the interference of Wi-Fi equipment or other high-frequency working equipment on the HARQ mechanism is reduced, the correct reception of the confirmed data is ensured, the utilization efficiency of the frequency spectrum is improved, and the power saving of unauthorized frequency spectrum terminal equipment is facilitated.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for indicating reception of an acknowledgment message frame, a method and an apparatus for receiving an acknowledgment message frame, 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 Enhanced Mobile Broadband (eMBB), ultra-reliable and Low Latency Communication (URLLC), and mass Machine Communication (MMTC), wherein in the eMBB application scenario, due to limited resources of the licensed spectrum, an unlicensed spectrum (NR-U), such as a 60GHz spectrum, is used to have a transmission bandwidth wide enough to transmit a large amount of data in a short time, and in the 60GHz spectrum, other Wireless Communication scenarios, such as Wi-Fi (Wireless Broadband), also exist. In the NR-U, an Acknowledgement mechanism of HARQ (Hybrid Automatic Repeat request) is adopted for a data Frame, while in the Wi-Fi technology, a collision random backoff mechanism is adopted, and after the SIFS (Short Inter-Frame Space) of the data Frame is transmitted, a receiver of the data Frame sends ACK (Acknowledgement) after the data Frame is acknowledged.
After the NR-U device finishes transmitting data, according to the existing mechanism, the gNB (5G base station) may specify a unique time interval for receiving a data frame acknowledgement message frame for the device, but when a Wi-Fi device supporting 60GHz exists in a network, interference may be caused to an HARQ mechanism of the NR-U device, so that the NR-U device cannot know whether a receiver of its data frame has correctly received the data, according to the existing mechanism, the device retransmits after timeout, but the data frame is completely received by the receiver, but the acknowledgement message frame is not received, and if the retransmission is performed, the result is (1) the spectrum utilization efficiency is low; (2) The data volume transmitted by the device is large, which is not beneficial to saving electricity of the device. The HARQ mechanism of NR-U needs to be redefined.
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 method for indicating the reception of an acknowledgement message frame.
Another aspect of the present invention is to provide a method of receiving an acknowledgment message frame.
Yet another aspect of the present invention is directed to an apparatus for indicating an acknowledgment message frame receipt.
Yet another aspect of the present invention is to provide an apparatus for receiving an acknowledgment message frame.
Yet another aspect of the present invention is to provide a communication device.
In view of the above, according to an aspect of the present invention, there is provided a method for indicating reception of an acknowledgment message frame, applied to a base station, the method including: configuring at least two receiving time points and a time interval between any two receiving time points in the downlink control information; and in the unauthorized frequency band, sending downlink control information to the terminal so that the terminal receives the confirmation message frame according to the receiving time point and the time interval.
In the method for indicating the reception of the acknowledgement message frame provided by the present invention, the base station configures at least two reception time points of the acknowledgement message frame for acknowledging the data frame and a time interval between every two reception time points in a Downlink Control Information (DCI), and transmits the DCI to the terminal in the unlicensed frequency band, so that the terminal can receive the acknowledgement message frame according to the reception time points and the time interval. By adopting the technical scheme of the invention, the interference of Wi-Fi equipment or other high-frequency working equipment on a HARQ mechanism is reduced, the correct reception of the confirmed data is ensured, the utilization efficiency of frequency spectrum is improved, and the power saving of unauthorized frequency spectrum terminal equipment is facilitated.
The method for indicating the reception of the acknowledgement message frame according to the present invention may further have the following technical features:
in the above technical solution, preferably, a part of the at least two receiving time points is located in the licensed frequency band, and another part of the at least two receiving time points is located in the unlicensed frequency band.
In the technical solution, a receiving time point of an acknowledgment message frame configured for the terminal by the base station may be located in the authorized frequency band or the unauthorized frequency band, or a part of the receiving time point may be located in the authorized frequency band and another part of the receiving time point is located in the unauthorized frequency band, so that the terminal may receive the acknowledgment message frame according to the receiving time point in the authorized frequency band or the unauthorized frequency band, and flexibility of receiving the acknowledgment message frame is improved, where an acknowledgment message frame in the unauthorized frequency band is earlier in time sequence than an acknowledgment message frame in the authorized frequency band, and if the terminal has received the acknowledgment message frame in the unauthorized frequency band, the acknowledgment message frame in the authorized frequency band may not be sent by the data frame receiver.
The licensed spectrum refers to a Frequency band below 6GHz defined in 3GPP (3 rd Generation Partnership Project), referred to as FR (Frequency Range) 1, such as 3.5GHz, and the unlicensed spectrum refers to a Frequency band above 6GHz defined in 3GPP, referred to as FR2, such as 60GHz.
In any of the above technical solutions, preferably, the receiving time point is one or more orthogonal frequency division multiplexing symbols.
In the technical scheme, the receiving time point corresponds to one or more Orthogonal Frequency Division Multiplexing symbols, for example, the receiving time point information is defined as 10 OFDM (Orthogonal Frequency Division Multiplexing) symbols, where the length of an OFDM symbol is the length of the OFDM of the received acknowledgement message frame in the licensed spectrum, where the 10 OFDM symbols refer to a duration of the terminal under a certain carrier length in the licensed spectrum, for example, the carrier length is 30 KHz.
In any of the above technical solutions, preferably, when there are at least two time intervals, any time interval is equal to or unequal to other time intervals; when any time interval is not equal to other time intervals, the length of the time interval is inversely related to the carrier width of the unlicensed spectrum.
In the technical solution, the time intervals corresponding to the carrier widths of different unlicensed spectrums are equal or unequal, and the carrier width in the unlicensed spectrum is larger, such as 120kHz, 240kHz or larger. When any time interval is not equal to other time intervals, the wider the carrier width of the unlicensed spectrum, the shorter the length of the time interval, and the different decreasing (or increasing) intervals of the time intervals between the unlicensed spectrums with the carrier width, the flexibility of receiving the acknowledgement message frame is improved, and the interference caused by the communication of Wi-Fi equipment or other equipment operating at high frequency to the terminal HARQ mechanism is reduced.
According to another aspect of the present invention, a method for receiving an acknowledgment message frame is provided, which is applied to a terminal, and includes: receiving downlink control information in an unlicensed frequency band; demodulating the downlink control information to obtain at least two receiving time points and a time interval between any two receiving time points; the acknowledgement message frame is received according to the reception time point and the time interval.
According to the method for receiving the acknowledgement message frame, the terminal receives the DCI in the unauthorized frequency band and demodulates the DCI, so that the receiving time points of at least two acknowledgement message frames for acknowledging the data frame and the time interval between every two receiving time points are obtained. Further, the terminal receives the acknowledgement message frame according to the reception time point and the time interval. By adopting the technical scheme of the invention, the interference of the communication of Wi-Fi equipment or other high-frequency working equipment on a terminal HARQ mechanism is reduced, so that the terminal can know whether a receiver of a data frame correctly receives the data in time, and the problems of low spectrum utilization efficiency, terminal power consumption and the like caused by overtime retransmission are avoided.
It should be noted that the receiving time point of the acknowledgement message frame configured by the base station for the terminal may be located in the authorized frequency band or the unlicensed frequency band, or a part of the receiving time points may be located in the authorized frequency band and another part of the receiving time points may be located in the unlicensed frequency band. The terminal can receive the confirmation message frame according to the receiving time point in the authorized frequency band or the unauthorized frequency band, so that the flexibility of receiving the confirmation message frame is improved, wherein the confirmation message frame in the unauthorized frequency band is earlier than the confirmation message frame in the authorized frequency band in time sequence, and if the terminal already receives the confirmation message frame in the unauthorized frequency band, the confirmation message frame of the data frame receiver in the authorized frequency band can be sent without.
The licensed spectrum refers to a frequency band below 6GHz defined in 3GPP, referred to as FR1, such as 3.5GHz, and the unlicensed spectrum refers to a frequency band above 6GHz defined in 3GPP, referred to as FR2, such as 60GHz.
The method for receiving the acknowledgement message frame according to the present invention may further include the following technical features:
in the above technical solution, preferably, the method further includes: the number of times the acknowledgement message frame is received is recorded.
In the technical scheme, the terminal counts once every time the terminal receives the confirmation message frame, records the receiving times and confirms the receiving confirmation condition of the data frame receiver to the data frame.
In any of the above technical solutions, preferably, the receiving time point is one or more orthogonal frequency division multiplexing symbols.
In this technical solution, the receiving time point corresponds to one or more orthogonal frequency division multiplexing symbols, for example, the receiving time point information is defined as 10 OFDM symbols, where the length of the OFDM symbol is the length of the OFDM of the received acknowledgement message frame in the authorized spectrum, where the 10 OFDM symbols refer to the duration of the terminal under a certain carrier length in the authorized spectrum, for example, the carrier length is 30 KHz.
In any of the above technical solutions, preferably, when there are at least two time intervals, any time interval is equal to or unequal to other time intervals; when any time interval is not equal to other time intervals, the length of the time interval is inversely related to the carrier width of the unlicensed spectrum.
In the technical solution, the time intervals corresponding to the carrier widths of different unlicensed spectrums are equal or unequal, and the carrier width in the unlicensed spectrum is larger, such as 120kHz, 240kHz or larger. When any time interval is not equal to other time intervals, the wider the carrier width of the unlicensed spectrum, the shorter the length of the time interval, and the decreasing (or increasing) intervals of the time intervals between the unlicensed spectrums with the carrier width are also different, so that the flexibility of receiving an acknowledgement message frame by the terminal is improved, and the interference caused by communication of Wi-Fi equipment or other high-frequency operating equipment on a terminal HARQ mechanism is reduced.
According to another aspect of the present invention, an apparatus for indicating the reception of an acknowledgment message frame is provided, which is applied to a base station, and includes: a configuration module, configured to configure at least two receiving time points and a time interval between any two receiving time points in the downlink control information; and the sending module is used for sending downlink control information to the terminal in the unauthorized frequency band so that the terminal can receive the confirmation message frame according to the receiving time point and the time interval.
According to the device for indicating the reception of the acknowledgement message frame, provided by the invention, the base station configures at least two reception time points of the acknowledgement message frame for confirming the data frame and a time interval between every two reception time points in the DCI, and transmits the DCI to the terminal in the unauthorized frequency band, so that the terminal can receive the acknowledgement message frame according to the reception time points and the time intervals. By adopting the technical scheme of the invention, the interference of Wi-Fi equipment or other high-frequency working equipment on a HARQ mechanism is reduced, the correct reception of the confirmed data is ensured, the utilization efficiency of frequency spectrum is improved, and the power saving of unauthorized frequency spectrum terminal equipment is facilitated.
The above apparatus for indicating the reception of the acknowledgement message frame according to the present invention may further have the following technical features:
in the above technical solution, preferably, a part of the at least two receiving time points is located in the licensed frequency band, and another part of the at least two receiving time points is located in the unlicensed frequency band.
In the technical scheme, a receiving time point of a confirmation message frame configured for the terminal by the base station may be located in an authorized frequency band or an unauthorized frequency band, or a part of the receiving time point may be located in the authorized frequency band, and another part of the receiving time point is located in the unauthorized frequency band, so that the terminal may receive the confirmation message frame according to the receiving time point in the authorized frequency band or the unauthorized frequency band, thereby improving flexibility of receiving the confirmation message frame, wherein the confirmation message frame in the unauthorized frequency band is earlier than the confirmation message frame in the authorized frequency band in time sequence, and if the terminal has received the confirmation message frame in the unauthorized frequency band, the confirmation message frame in the authorized frequency band may not be sent by the data frame receiver.
The licensed spectrum refers to a frequency band below 6GHz defined in 3GPP, referred to as FR1, such as 3.5GHz, and the unlicensed spectrum refers to a frequency band above 6GHz defined in 3GPP, referred to as FR2, such as 60GHz.
In any of the above technical solutions, preferably, the receiving time point is one or more orthogonal frequency division multiplexing symbols.
In this technical solution, the receiving time point corresponds to one or more orthogonal frequency division multiplexing symbols, for example, the receiving time point information is defined as 10 OFDM symbols, where the length of the OFDM symbol is the length of the OFDM of the received acknowledgement message frame in the authorized spectrum, where the 10 OFDM symbols refer to the duration of the terminal under a certain carrier length in the authorized spectrum, for example, the carrier length is 30 KHz.
In any of the above technical solutions, preferably, when there are at least two time intervals, any time interval is equal to or not equal to other time intervals; when any time interval is not equal to other time intervals, the length of the time interval is inversely related to the carrier width of the unlicensed spectrum.
In the technical solution, the time intervals corresponding to the carrier widths of different unlicensed spectrums are equal or unequal, and the carrier width in the unlicensed spectrum is larger, such as 120kHz, 240kHz or larger. When any time interval is not equal to other time intervals, the wider the carrier width of the unlicensed spectrum, the shorter the length of the time interval, and the decreasing (or increasing) intervals of the time intervals between the unlicensed spectrums with the carrier width are also different, so that the flexibility of receiving the acknowledgement message frame is improved, and the interference caused by the communication of Wi-Fi equipment or other equipment operating at high frequency to the terminal HARQ mechanism is reduced.
According to another aspect of the present invention, an apparatus for receiving an acknowledgment message frame is provided, which is applied to a terminal, and includes: a receiving module, configured to receive downlink control information in an unlicensed frequency band; the acquisition module is used for demodulating the downlink control information and acquiring at least two receiving time points and a time interval between any two receiving time points; and the receiving module is also used for receiving the confirmation message frame according to the receiving time point and the time interval.
According to the device for indicating the reception of the confirmation message frame, the terminal receives the DCI in the unauthorized frequency band and demodulates the DCI, so that the receiving time points of at least two confirmation message frames for confirming the data frame and the time interval between every two receiving time points are obtained. Further, the terminal receives the acknowledgement message frame according to the reception time point and the time interval. By adopting the technical scheme of the invention, the interference of the communication of Wi-Fi equipment or other high-frequency working equipment on a terminal HARQ mechanism is reduced, so that the terminal can know whether a receiver of a data frame correctly receives the data in time, and the problems of low spectrum utilization efficiency, terminal power consumption and the like caused by overtime retransmission are avoided.
It should be noted that the receiving time point of the acknowledgment message frame configured by the base station for the terminal may be located in the authorized frequency band or the unlicensed frequency band, or a part of the receiving time point may be located in the authorized frequency band and another part of the receiving time point may be located in the unlicensed frequency band. The terminal can receive the confirmation message frame according to the receiving time point in the authorized frequency band or the unauthorized frequency band, so that the flexibility of receiving the confirmation message frame is improved, wherein the confirmation message frame in the unauthorized frequency band is earlier than the confirmation message frame in the authorized frequency band in time sequence, and if the terminal already receives the confirmation message frame in the unauthorized frequency band, the confirmation message frame of the data frame receiver in the authorized frequency band can be sent without.
The licensed spectrum refers to a frequency band below 6GHz defined in 3GPP, referred to as FR1, such as 3.5GHz, and the unlicensed spectrum refers to a frequency band above 6GHz defined in 3GPP, referred to as FR2, such as 60GHz.
The above apparatus for indicating the reception of the acknowledgement message frame according to the present invention may further have the following technical features:
in the above technical solution, preferably, the method further includes: and the recording module is used for recording the times of receiving the confirmation message frame.
In the technical scheme, the terminal counts once every time the terminal receives the confirmation message frame, records the receiving times and confirms the receiving confirmation condition of the data frame receiver to the data frame.
In any of the above technical solutions, preferably, the receiving time point is one or more orthogonal frequency division multiplexing symbols.
In this technical solution, the receiving time point corresponds to one or more orthogonal frequency division multiplexing symbols, for example, the receiving time point information is defined as 10 OFDM symbols, where the length of the OFDM symbol is the length of the OFDM of the received acknowledgement message frame in the authorized spectrum, where the 10 OFDM symbols refer to the duration of the terminal under a certain carrier length in the authorized spectrum, for example, the carrier length is 30 KHz.
In any of the above technical solutions, preferably, when there are at least two time intervals, any time interval is equal to or unequal to other time intervals; when any time interval is not equal to other time intervals, the length of the time interval is inversely related to the carrier width of the unlicensed spectrum.
In the technical solution, the time intervals corresponding to the carrier widths of different unlicensed spectrums are equal or unequal, and the carrier width in the unlicensed spectrum is larger, such as 120kHz, 240kHz or larger. When any time interval is not equal to other time intervals, the wider the carrier width of the unlicensed spectrum, the shorter the length of the time interval, and the decreasing (or increasing) intervals of the time intervals between the unlicensed spectrums with the carrier width are also different, so that the flexibility of receiving an acknowledgement message frame by the terminal is improved, and the interference caused by communication of Wi-Fi equipment or other high-frequency operating equipment on a terminal HARQ mechanism is reduced.
According to a further aspect of the present invention, there is provided a communication device comprising means for indicating the reception of an acknowledgement message frame as defined in any one of the above, or means for receiving an acknowledgement message frame as defined in any one of the above.
The communication device provided by the present invention includes the apparatus for indicating the reception of an acknowledgment message frame according to any of the above technical solutions, or the apparatus for receiving an acknowledgment message frame according to any of the above technical solutions, and can achieve all the advantages of the apparatus for indicating the reception of an acknowledgment message frame according to any of the above technical solutions, or all the advantages of the apparatus for receiving an acknowledgment message frame according to any of the above technical solutions.
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 shows a flow diagram of a method for indicating receipt of an acknowledgment message frame according to an embodiment of the invention;
fig. 2 shows a flow chart of a method of receiving an acknowledgement message frame according to an embodiment of the invention;
fig. 3 shows a flow chart of a receiving method of an acknowledgement message frame of another embodiment of the invention;
fig. 4 is a diagram illustrating an apparatus for indicating acknowledgment message frame receipt according to an embodiment of the present invention;
fig. 5 shows a schematic diagram of an apparatus for receiving an acknowledgement message frame according to an embodiment of the invention;
fig. 6 shows a schematic diagram of an apparatus for receiving an acknowledgement message frame according to another 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 otherwise than as specifically described herein and, therefore, the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 is a flowchart illustrating a method for indicating the reception of an acknowledgment message frame according to an embodiment of the present invention. Wherein, the method comprises the following steps:
and step 104, in the unauthorized frequency band, sending downlink control information to the terminal so that the terminal receives the confirmation message frame according to the receiving time point and the time interval.
In the method for indicating the reception of the acknowledgement message frame, the base station configures at least two reception time points of the acknowledgement message frame for acknowledging the data frame and a time interval between every two reception time points in the DCI, and transmits the DCI to the terminal in the unlicensed frequency band, so that the terminal can receive the acknowledgement message frame according to the reception time points and the time intervals. By adopting the technical scheme of the invention, the interference of Wi-Fi equipment or other high-frequency working equipment on a HARQ mechanism is reduced, the correct reception of the confirmed data is ensured, the utilization efficiency of frequency spectrum is improved, and the power saving of unauthorized frequency spectrum terminal equipment is facilitated.
In one embodiment of the present invention, it is preferable that a part of the at least two reception time points is located in the licensed band, and another part of the reception time points is located in the unlicensed band.
In this embodiment, the receiving time point of the acknowledgment message frame configured by the base station for the terminal may be located in the authorized frequency band or the unlicensed frequency band, or a part of the receiving time point may be located in the authorized frequency band and another part of the receiving time point is located in the unlicensed frequency band, so that the terminal may receive the acknowledgment message frame according to the receiving time point in the authorized frequency band or the unlicensed frequency band, thereby improving flexibility of receiving the acknowledgment message frame.
It should be noted that, the acknowledgment message frame in the unlicensed frequency band is earlier in time sequence than the acknowledgment message frame in the licensed frequency band, if the terminal has received the acknowledgment message frame in the unlicensed frequency band, the acknowledgment message frame in the licensed frequency band by the data frame receiver may not be sent, and if the terminal has not received the acknowledgment message frame in the unlicensed frequency band, the acknowledgment message frame is sent by the data frame receiver in the licensed frequency band.
The licensed spectrum refers to a frequency band below 6GHz defined in 3GPP, referred to as FR1, such as 3.5GHz, and the unlicensed spectrum refers to a frequency band above 6GHz defined in 3GPP, referred to as FR2, such as 60GHz.
In one embodiment of the present invention, preferably, the receiving time point is one or more orthogonal frequency division multiplexing symbols.
In this embodiment, the receiving time point corresponds to one or more orthogonal frequency division multiplexing symbols, for example, the receiving time point information is defined as 10 OFDM symbols, where the length of the OFDM symbol is the length of the OFDM of the received acknowledgement message frame in the licensed spectrum, where the 10 OFDM symbols refer to the duration of the terminal under a certain carrier length in the licensed spectrum, for example, the carrier length is 30 KHz.
In one embodiment of the present invention, preferably, when there are at least two time intervals, any time interval is equal to or not equal to the other time intervals; when any time interval is not equal to other time intervals, the length of the time interval is inversely related to the carrier width of the unlicensed spectrum.
In this embodiment, the carrier widths of different unlicensed spectrums correspond to equal or unequal time intervals, and the carrier width of the unlicensed spectrum is larger, such as 120kHz, 240kHz or more. When any time interval is not equal to other time intervals, the wider the carrier width of the unlicensed spectrum, the shorter the length of the time interval, and the decreasing (or increasing) intervals of the time intervals between the unlicensed spectrums with the carrier width are also different, so that the flexibility of receiving the acknowledgement message frame is improved, and the interference caused by the communication of Wi-Fi equipment or other equipment operating at high frequency to the terminal HARQ mechanism is reduced.
In an embodiment of the present invention, an HARQ-timing mechanism for an NR-U terminal is proposed, specifically, 2 or more HARQ-timing time points and HARQ-timing intervals are provided for data transmitted by the NR-U terminal according to its carrier width. The base station allocates two or more time points of HARQ-timing for the NR-U terminal, for example, 10 OFDM symbols after receiving the data frame are taken as a first time point of HARQ-timing, the second time point is 5 OFDM symbols after the first time point (the 5 OFDM symbols are a time interval), and the third time point is 3 OFDM symbols after the second time point (the 3 OFDM symbols are a time interval). As mentioned above, any time interval may not be equal to other time intervals, and the second time point or the third time point may also be 10 OFDM symbols, or other numbers of OFDM symbols.
Fig. 2 is a schematic flow chart of the method for receiving an acknowledgment message frame according to an embodiment of the present invention. Wherein, the method comprises the following steps:
in step 206, an acknowledgement message frame is received according to the reception time point and the time interval.
According to the method for receiving the acknowledgement message frame, the terminal receives the DCI in the unauthorized frequency band and demodulates the DCI, so that the receiving time points of at least two acknowledgement message frames for acknowledging the data frame and the time interval between every two receiving time points are obtained. Further, the terminal receives the acknowledgement message frame according to the reception time point and the time interval. By adopting the technical scheme of the invention, the interference of the communication of Wi-Fi equipment or other high-frequency working equipment on a terminal HARQ mechanism is reduced, so that the terminal can know whether a receiver of a data frame correctly receives the data in time, and the problems of low spectrum utilization efficiency, terminal power consumption and the like caused by overtime retransmission are avoided.
It should be noted that the receiving time point of the acknowledgment message frame configured by the base station for the terminal may be located in the authorized frequency band or the unlicensed frequency band, or a part of the receiving time point may be located in the authorized frequency band and another part of the receiving time point may be located in the unlicensed frequency band. The terminal can receive the confirmation message frame according to the receiving time point in the authorized frequency band or the unauthorized frequency band, so that the flexibility of receiving the confirmation message frame is improved, wherein the confirmation message frame in the unauthorized frequency band is earlier than the confirmation message frame in the authorized frequency band in time sequence, if the terminal already receives the confirmation message frame in the unauthorized frequency band, the confirmation message frame of the data frame receiver in the authorized frequency band can not be sent, and if the terminal does not receive the confirmation message frame in the unauthorized frequency band, the data frame receiver sends the confirmation message frame in the authorized frequency band.
The licensed spectrum refers to a frequency band below 6GHz defined in 3GPP, referred to as FR1, such as 3.5GHz, and the unlicensed spectrum refers to a frequency band above 6GHz defined in 3GPP, referred to as FR2, such as 60GHz.
Fig. 3 shows a flow chart of a method for receiving an acknowledgment message frame according to another embodiment of the present invention. Wherein, the method comprises the following steps:
In this embodiment, the terminal counts once every time it receives an acknowledgment message frame, records the number of times of reception, and specifies the acknowledgment of the reception of the data frame by the data frame receiver.
In one embodiment of the present invention, preferably, the receiving time point is one or more orthogonal frequency division multiplexing symbols.
In this embodiment, the receiving time point corresponds to one or more orthogonal frequency division multiplexing symbols, for example, the receiving time point information is defined as 10 OFDM symbols, where the length of the OFDM symbol is the length of the OFDM of the received acknowledgement message frame in the licensed spectrum, where the 10 OFDM symbols refer to the duration of the terminal under a certain carrier length in the licensed spectrum, for example, the carrier length is 30 KHz.
In one embodiment of the present invention, preferably, when there are at least two time intervals, any time interval is equal to or not equal to the other time intervals; when any time interval is not equal to other time intervals, the length of the time interval is inversely related to the carrier width of the unlicensed spectrum.
In this embodiment, the carrier widths of different unlicensed spectrums correspond to equal or unequal time intervals, and the carrier width of the unlicensed spectrum is larger, such as 120kHz, 240kHz or larger. When any time interval is not equal to other time intervals, the wider the carrier width of the unlicensed spectrum, the shorter the length of the time interval, and the decreasing (or increasing) intervals of the time intervals between the unlicensed spectrums with the carrier width are also different, so that the flexibility of receiving an acknowledgement message frame by the terminal is improved, and the interference caused by communication of Wi-Fi equipment or other high-frequency operating equipment on a terminal HARQ mechanism is reduced.
In an embodiment of the third aspect of the present invention, an apparatus for indicating the reception of an acknowledgment message frame is provided, which is applied to a base station, and fig. 4 shows a schematic diagram of an apparatus 40 for indicating the reception of an acknowledgment message frame according to an embodiment of the present invention. Wherein the device 40 comprises:
a configuration module 402, configured to configure at least two receiving time points and a time interval between any two receiving time points in the downlink control information;
a sending module 404, configured to send downlink control information to the terminal in the unlicensed frequency band, so that the terminal receives the acknowledgment message frame according to the receiving time point and the time interval.
In the apparatus 40 for indicating the reception of the acknowledgement message frame, the base station configures at least two reception time points of the acknowledgement message frame for acknowledging the data frame and a time interval between every two reception time points in the DCI, and transmits the DCI to the terminal in the unlicensed frequency band, so that the terminal can receive the acknowledgement message frame according to the reception time points and the time intervals. By adopting the technical scheme of the invention, the interference of Wi-Fi equipment or other high-frequency working equipment on a HARQ mechanism is reduced, the confirmed data is ensured to be correctly received, the utilization efficiency of frequency spectrum is improved, and the power saving of unauthorized frequency spectrum terminal equipment is facilitated.
In one embodiment of the present invention, preferably, a part of the at least two receiving time points is located in the licensed frequency band, and another part of the at least two receiving time points is located in the unlicensed frequency band.
In this embodiment, the receiving time point of the acknowledgment message frame configured by the base station for the terminal may be located in the authorized frequency band or the unlicensed frequency band, or a part of the receiving time point may be located in the authorized frequency band and another part of the receiving time point is located in the unlicensed frequency band, so that the terminal may receive the acknowledgment message frame according to the receiving time point in the authorized frequency band or the unlicensed frequency band, thereby improving flexibility of receiving the acknowledgment message frame.
It should be noted that the acknowledgment message frame in the unlicensed frequency band is earlier in time sequence than the acknowledgment message frame in the licensed frequency band, if the terminal has received the acknowledgment message frame in the unlicensed frequency band, the acknowledgment message frame in the licensed frequency band by the data frame receiver may not be sent, and if the terminal has not received the acknowledgment message frame in the unlicensed frequency band, the acknowledgment message frame is sent by the data frame receiver in the licensed frequency band.
The licensed spectrum refers to a frequency band below 6GHz defined in 3GPP, referred to as FR1, such as 3.5GHz, and the unlicensed spectrum refers to a frequency band above 6GHz defined in 3GPP, referred to as FR2, such as 60GHz.
In one embodiment of the present invention, preferably, the receiving time point is one or more orthogonal frequency division multiplexing symbols.
In this embodiment, the receiving time point corresponds to one or more orthogonal frequency division multiplexing symbols, for example, the receiving time point information is defined as 10 OFDM symbols, where the length of the OFDM symbol is the length of the OFDM of the received acknowledgement message frame in the authorized spectrum, where the 10 OFDM symbols refer to the duration of the terminal in the authorized spectrum under a certain carrier length, for example, the carrier length is 30 KHz.
In one embodiment of the present invention, preferably, when there are at least two time intervals, any time interval is equal to or not equal to the other time intervals; when any time interval is not equal to other time intervals, the length of the time interval is inversely related to the carrier width of the unlicensed spectrum.
In this embodiment, the carrier widths of different unlicensed spectrums correspond to equal or unequal time intervals, and the carrier width of the unlicensed spectrum is larger, such as 120kHz, 240kHz or more. When any time interval is not equal to other time intervals, the wider the carrier width of the unlicensed spectrum, the shorter the length of the time interval, and the decreasing (or increasing) intervals of the time intervals between the unlicensed spectrums with the carrier width are also different, so that the flexibility of receiving the acknowledgement message frame is improved, and the interference caused by the communication of Wi-Fi equipment or other equipment operating at high frequency to the terminal HARQ mechanism is reduced.
Fig. 5 is a schematic diagram of an apparatus 50 for receiving an acknowledgment message frame according to an embodiment of the present invention. Wherein the device 50 comprises:
a receiving module 502, configured to receive downlink control information in an unlicensed frequency band;
an obtaining module 504, configured to demodulate the downlink control information, and obtain at least two receiving time points and a time interval between any two receiving time points;
the receiving module 502 is further configured to receive an acknowledgement message frame according to the receiving time point and the time interval.
According to the device 50 for indicating the reception of the acknowledgement message frame, provided by the invention, the terminal receives the DCI in the unauthorized frequency band and demodulates the DCI, so that the receiving time points of at least two acknowledgement message frames for confirming the data frame and the time interval between every two receiving time points are obtained. Further, the terminal receives the acknowledgement message frame according to the reception time point and the time interval. By adopting the technical scheme of the invention, the interference of communication of Wi-Fi equipment or other high-frequency working equipment on a terminal HARQ mechanism is reduced, so that the terminal can know whether a receiver of a data frame of the terminal correctly receives the data in time, and the problems of low frequency spectrum utilization efficiency, terminal power consumption and the like caused by overtime retransmission are avoided.
It should be noted that the receiving time point of the acknowledgment message frame configured by the base station for the terminal may be located in the authorized frequency band or the unlicensed frequency band, or a part of the receiving time point may be located in the authorized frequency band and another part of the receiving time point may be located in the unlicensed frequency band. The terminal can receive the confirmation message frame according to the receiving time point in the authorized frequency band or the unauthorized frequency band, so that the flexibility of receiving the confirmation message frame is improved, wherein the confirmation message frame in the unauthorized frequency band is earlier than the confirmation message frame in the authorized frequency band in time sequence, if the terminal already receives the confirmation message frame in the unauthorized frequency band, the confirmation message frame of the data frame receiver in the authorized frequency band can not be sent, and if the terminal does not receive the confirmation message frame in the unauthorized frequency band, the data frame receiver sends the confirmation message frame in the authorized frequency band.
The licensed spectrum refers to a frequency band below 6GHz defined in 3GPP, referred to as FR1, such as 3.5GHz, and the unlicensed spectrum refers to a frequency band above 6GHz defined in 3GPP, referred to as FR2, such as 60GHz.
Fig. 6 shows a schematic diagram of an acknowledgement message frame receiving device 60 according to another embodiment of the invention. Wherein the device 60 comprises:
a receiving module 602, configured to receive downlink control information in an unlicensed frequency band;
an obtaining module 604, configured to demodulate the downlink control information, and obtain at least two receiving time points and a time interval between any two receiving time points;
a receiving module 602, further configured to receive an acknowledgement message frame according to the receiving time point and the time interval;
a recording module 606, configured to record the number of times of receiving the acknowledgement message frame.
In this embodiment, the terminal counts once every time it receives an acknowledgment message frame, records the number of times of reception, and specifies the acknowledgment of the reception of the data frame by the data frame receiver.
In one embodiment of the present invention, preferably, the receiving time point is one or more orthogonal frequency division multiplexing symbols.
In this embodiment, the receiving time point corresponds to one or more orthogonal frequency division multiplexing symbols, for example, the receiving time point information is defined as 10 OFDM symbols, where the length of the OFDM symbol is the length of the OFDM of the received acknowledgement message frame in the authorized spectrum, where the 10 OFDM symbols refer to the duration of the terminal in the authorized spectrum under a certain carrier length, for example, the carrier length is 30 KHz.
In one embodiment of the present invention, preferably, when there are at least two time intervals, any time interval is equal to or not equal to the other time intervals; when any time interval is not equal to other time intervals, the length of the time interval is inversely related to the carrier width of the unlicensed spectrum.
In this embodiment, the carrier widths of different unlicensed spectrums correspond to equal or unequal time intervals, and the carrier width of the unlicensed spectrum is larger, such as 120kHz, 240kHz or larger. When any time interval is not equal to other time intervals, the wider the carrier width of the unlicensed spectrum, the shorter the length of the time interval, and the different decreasing (or increasing) intervals of the time intervals between the unlicensed spectrums with the carrier width, the flexibility of the terminal for receiving the acknowledgement message frame is improved, and the interference caused by the communication of Wi-Fi equipment or other high-frequency operating equipment on the terminal HARQ mechanism is reduced.
An embodiment of the fifth aspect of the present invention proposes a communication device, comprising the apparatus for indicating the reception of an acknowledgment message frame as in any above, or the apparatus for receiving an acknowledgment message frame as in any above.
The communication device provided by the present invention includes the apparatus for indicating the reception of an acknowledgement message frame according to any of the above embodiments, or the apparatus for receiving an acknowledgement message frame according to any of the above embodiments, which can achieve all the advantages of the apparatus for indicating the reception of an acknowledgement message frame according to any of the above embodiments, or all the advantages of the apparatus for receiving an acknowledgement message frame 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 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 indicating acknowledgment message frame reception, applied to a base station, the method comprising:
configuring at least two receiving time points and a time interval between any two receiving time points in downlink control information;
in an unauthorized frequency band, sending the downlink control information to a terminal so that the terminal receives the confirmation message frame according to the receiving time point and the time interval;
one part of the at least two receiving time points is located in the authorized frequency band, and the other part of the at least two receiving time points is located in the unlicensed frequency band.
2. The method for indicating acknowledgment message frame receipt of claim 1, wherein the reception time point is one or more orthogonal frequency division multiplexing symbols.
3. The method according to claim 1, wherein when there are at least two of said time intervals, any one of said time intervals is equal to or not equal to the other of said time intervals;
when any one of the time intervals is not equal to the other time intervals, the length of the time interval is inversely related to the carrier width of the unlicensed frequency band.
4. A method for receiving an acknowledgment message frame, the method being applied to a terminal and comprising:
receiving downlink control information in an unlicensed frequency band;
demodulating the downlink control information to obtain at least two receiving time points and a time interval between any two receiving time points;
receiving the acknowledgement message frame according to the receiving time point and the time interval;
wherein, the base station configures a part of the receiving time points of the at least two receiving time points of the acknowledgement message frame for the terminal in the authorized frequency band, and the other part of the receiving time points in the unauthorized frequency band.
5. The method for receiving an acknowledgment message frame according to claim 4, further comprising:
and recording the times of receiving the confirmation message frame.
6. The method for receiving an acknowledgment message frame of claim 4, wherein the reception time point is one or more orthogonal frequency division multiplexing symbols.
7. The method for receiving an acknowledgment message frame according to any one of claims 4 to 6, wherein when there are at least two of said time intervals, any of said time intervals is equal to or not equal to the other of said time intervals;
when any one of the time intervals is not equal to the other time intervals, the length of the time interval is inversely related to the carrier width of the unlicensed frequency band.
8. An apparatus for indicating acknowledgment message frame reception, applied to a base station, the apparatus comprising:
a configuration module, configured to configure at least two receiving time points and a time interval between any two receiving time points in downlink control information;
a sending module, configured to send the downlink control information to a terminal in an unlicensed frequency band, so that the terminal receives the acknowledgment message frame according to the receiving time point and the time interval;
a part of the at least two reception time points is located in the licensed frequency band, and another part of the reception time points is located in the unlicensed frequency band.
9. The apparatus for indicating acknowledgment message frame receipt of claim 8, wherein the reception time point is one or more orthogonal frequency division multiplexing symbols.
10. The apparatus of claim 8, wherein when there are at least two of the time intervals, any one of the time intervals is equal to or not equal to the other time intervals;
when any one of the time intervals is not equal to the other time intervals, the length of the time interval is inversely related to the carrier width of the unlicensed frequency band.
11. An apparatus for receiving an acknowledgment message frame, the apparatus being applied to a terminal, the apparatus comprising:
a receiving module, configured to receive downlink control information in an unlicensed frequency band;
an obtaining module, configured to demodulate the downlink control information, and obtain at least two receiving time points and a time interval between any two receiving time points;
the receiving module is further configured to receive the acknowledgement message frame according to the receiving time point and the time interval;
wherein, the base station configures a part of the receiving time points of the at least two receiving time points of the acknowledgement message frame for the terminal in the authorized frequency band, and the other part of the receiving time points in the unauthorized frequency band.
12. The apparatus for receiving an acknowledgment message frame of claim 11, further comprising:
and the recording module is used for recording the times of receiving the confirmation message frame.
13. The apparatus for receiving an acknowledgment message frame of claim 11, wherein the reception time point is one or more orthogonal frequency division multiplexing symbols.
14. The apparatus for receiving an acknowledgment message frame according to any one of claims 11 to 13, wherein when there are at least two of said time intervals, any of said time intervals is equal to or not equal to the other of said time intervals;
when any one of the time intervals is not equal to the other time intervals, the length of the time interval is inversely related to the carrier width of the unlicensed frequency band.
15. A communication device, comprising:
means for indicating the receipt of an acknowledgement message frame according to any of claims 8 to 10, or means for receiving an acknowledgement message frame according to any of claims 11 to 14.
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