CN106301700A - The information feedback method of a kind of upstream data and relevant device - Google Patents
The information feedback method of a kind of upstream data and relevant device Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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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
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
- H04L1/1678—Details of the supervisory signal the supervisory signal being transmitted together with control information where the control information is for timing, e.g. time stamps
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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
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Abstract
The embodiment of the present invention provides the information feedback method of a kind of upstream data, including: generate the response feedback instruction information that upstream data bag is corresponding；Wherein, the time-frequency location that described response feedback instruction information is fed back for indicating the ACK/NACK information for described upstream data bag；Indicate information according to described response feedback, determine the time-frequency location that the ACK/NACK information for described upstream data bag is fed back；The described time-frequency location determined feeds back the ACK/NACK information for described upstream data bag.Separately, the embodiment of the present invention also provides for a kind of base station and terminal.The information feedback method of described upstream data can effectively reduce the time delay of the ACK/NACK information feedback of upstream data.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an information feedback method for uplink data and a related device.
Background
With the rapid development of mobile services, the current wireless communication technology, such as the fourth generation mobile communication technology featuring OFDM, has been unable to meet the requirements of new scenarios. Research on fifth-generation (5G) mobile communication technology has been vigorously conducted in both academic and industrial circles. However, research and standardization work of a new generation of mobile communication technology needs to be continuously developed for a long time to meet different scene requirements, and therefore, in an initial stage of standardization, how to ensure that a currently standardized technical scheme does not cause a barrier to design of a technical scheme which may appear in a subsequent evolution process is a problem of important attention, namely forward compatibility needs to be considered in an important manner in a current standardization process.
The fifth generation mobile communication technology needs to support ultra-high data transmission rate, massive connection number and low data transmission delay to meet the requirements of different scenes. The main scenes of future 5G mobile communication include the following three: enhanced Mobile Broadband (eMBB), mass machine type Communications (mMTC), and high-reliability Low-latency Communications (URLLC). The three scenarios are different in the type of service and the requirements. Such as: the eMB service mainly aims at a service scene needing higher data rate; the mMTC service mainly aims at a large number of connected service scenes; the URLLC service mainly aims at service scenarios with high delay requirements and reliability. In some scenarios of 5G mobile communication, the delay of data packets for the user plane needs to be on the order of milliseconds (ms), and thus less powerful transmission needs to be supported.
In the design of a conventional Long Term Evolution (LTE) system, in order to ensure the reliability of data transmission, a Hybrid Automatic Repeat reQuest (HARQ) mechanism is introduced: for an uplink transmitted data packet, the base station performs ACK/NACK (acknowledgement/non-acknowledgement) feedback at a predetermined subframe position after receiving the data packet. As shown in fig. 1, the terminal sends an uplink data packet on the nth subframe, and then the base station performs ACK/NACK information feedback on the (n + 4) th subframe. Therefore, there is a delay of 4ms between the data transmission and the corresponding feedback time in the conventional HARQ mechanism for LTE downlink transmission. The design of the delay is mainly to simplify the traditional terminal design and consider the terminal processing capability, however, the design cannot be applied to some scenarios with high requirements on delay in 5G, such as URLLC.
Disclosure of Invention
The invention provides an information feedback method of uplink data and related equipment, which are used for effectively reducing the time delay between uplink data transmission and corresponding information feedback and improving the reliability and stability of the uplink data transmission.
An information feedback method of uplink data comprises the following steps:
generating response feedback indication information corresponding to the uplink data packet; wherein, the response feedback indication information is used for indicating the time-frequency position of ACK/NACK information feedback aiming at the uplink data packet;
determining a time-frequency position for ACK/NACK information feedback of the uplink data packet according to the response feedback indication information;
and feeding back ACK/NACK information aiming at the uplink data packet at the determined time-frequency position.
Wherein, the generating of the response feedback indication information corresponding to the uplink data packet includes:
acquiring predefined response feedback indication information; or,
informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through system information, a wireless resource control signaling, a media access control signaling or a physical layer signaling;
wherein, the system information, the radio resource control signaling, the media access control signaling or the physical layer signaling carries the response feedback indication information corresponding to the uplink data packet.
Wherein, the generating of the response feedback indication information corresponding to the uplink data packet includes:
generating an uplink scheduling instruction aiming at an uplink data packet, wherein the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through the uplink scheduling instruction.
Wherein, the generating of the response feedback indication information corresponding to the uplink data packet includes:
generating an uplink scheduling instruction for an uplink data packet and a scrambling sequence of the uplink scheduling instruction, wherein the scrambling sequence of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through the scrambling sequence of the uplink scheduling instruction.
Wherein the feeding back ACK/NACK information for the uplink data packet at the determined time-frequency position includes:
and feeding back ACK/NACK information aiming at the uplink data packet at least one time-frequency position in the limited time-frequency resource set.
And when the response feedback indication information corresponding to the uplink data packet is generated, the response feedback indication information corresponding to the uplink data packets of different terminals is different.
An information feedback method of uplink data comprises the following steps:
acquiring response feedback indication information corresponding to an uplink data packet; wherein, the response feedback indication information is used for indicating the time-frequency position of ACK/NACK information feedback aiming at the uplink data packet;
determining a time-frequency position for ACK/NACK information feedback of the uplink data packet according to the response feedback indication information;
and receiving the ACK/NACK information aiming at the uplink data packet according to the determined time-frequency position.
The obtaining of the response feedback indication information corresponding to the uplink data packet includes:
acquiring predefined feedback indication information; or,
acquiring response feedback indication information corresponding to an uplink data packet according to system information, a radio resource control signaling, a media access control signaling or a physical layer signaling sent by a base station;
wherein, the system information, the radio resource control signaling, the media access control signaling or the physical layer signaling carries the response feedback indication information corresponding to the uplink data packet.
The obtaining of the response feedback indication information corresponding to the uplink data packet includes:
acquiring an uplink scheduling instruction aiming at an uplink data packet; the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and acquiring response feedback indication information corresponding to the uplink data packet according to the uplink scheduling instruction.
Wherein, the obtaining of the response feedback indication information corresponding to the uplink data packet according to the uplink scheduling instruction includes:
analyzing the content of the uplink scheduling instruction; the content of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and acquiring response feedback indication information corresponding to the uplink data packet from the content of the uplink scheduling instruction.
Wherein, the obtaining of the response feedback indication information corresponding to the uplink data packet according to the uplink scheduling instruction includes:
analyzing a scrambling sequence of the uplink scheduling instruction; the scrambling sequence of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and acquiring response feedback indication information corresponding to the uplink data packet according to the scrambling sequence of the uplink scheduling instruction.
Receiving ACK/NACK information for the uplink data packet according to the determined time-frequency position, including:
and receiving the ACK/NACK information aiming at the uplink data packet at least one time-frequency position in the limited time-frequency resource set.
And the response feedback indication information corresponding to the uplink data packets of different terminals is different.
A base station, comprising:
a feedback indication generating unit, configured to generate response feedback indication information corresponding to the uplink data packet; wherein, the response feedback indication information is used for indicating the time-frequency position of ACK/NACK information feedback aiming at the uplink data packet;
a feedback position determining unit, configured to determine, according to the response feedback indication information, a time-frequency position of ACK/NACK information feedback for the uplink data packet;
and the response information feedback unit is used for feeding back the ACK/NACK information aiming at the uplink data packet at the determined time-frequency position.
Wherein, the feedback indication generating unit is specifically configured to:
acquiring predefined response feedback indication information; or,
informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through system information, a wireless resource control signaling, a media access control signaling or a physical layer signaling;
wherein, the system information, the radio resource control signaling, the media access control signaling or the physical layer signaling carries the response feedback indication information corresponding to the uplink data packet.
Wherein, the base station further comprises:
a scheduling instruction generating unit, configured to generate an uplink scheduling instruction for an uplink data packet, where the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and the feedback indication generating unit is further configured to notify the terminal to receive ACK/NACK information for the uplink data packet at a corresponding time-frequency position through the uplink scheduling instruction.
Wherein, the base station further comprises:
a scheduling instruction generating unit, configured to generate an uplink scheduling instruction for an uplink data packet and a scrambling sequence of the uplink scheduling instruction, where the scrambling sequence of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and the feedback indication generating unit is further configured to notify the terminal of receiving ACK/NACK information for the uplink data packet at a corresponding time-frequency position through the scrambling sequence of the uplink scheduling instruction.
Wherein, the response information feedback unit is specifically configured to:
and feeding back ACK/NACK information aiming at the uplink data packet at least one time-frequency position in the limited time-frequency resource set.
And when the response feedback indication information corresponding to the uplink data packet is generated, the response feedback indication information corresponding to the uplink data packets of different terminals is different.
A terminal, comprising:
a feedback indication obtaining unit, configured to obtain response feedback indication information corresponding to the uplink data packet; wherein, the response feedback indication information is used for indicating the time-frequency position of ACK/NACK information feedback aiming at the uplink data packet;
a feedback position determining unit, configured to determine, according to the response feedback indication information, a time-frequency position of ACK/NACK information feedback for the uplink data packet;
and the response information receiving unit is used for receiving the ACK/NACK information aiming at the uplink data packet according to the determined time-frequency position.
The feedback indication acquiring unit is specifically configured to:
acquiring predefined feedback indication information; or,
acquiring response feedback indication information corresponding to an uplink data packet according to system information, a radio resource control signaling, a media access control signaling or a physical layer signaling sent by a base station;
wherein, the system information, the radio resource control signaling, the media access control signaling or the physical layer signaling carries the response feedback indication information corresponding to the uplink data packet.
The feedback indication acquiring unit is specifically configured to:
acquiring an uplink scheduling instruction aiming at an uplink data packet; the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and acquiring response feedback indication information corresponding to the uplink data packet according to the uplink scheduling instruction.
Wherein, the terminal further comprises:
the scheduling instruction analysis unit is used for analyzing the content of the uplink scheduling instruction; the content of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
the feedback instruction obtaining unit is further configured to obtain response feedback instruction information corresponding to the uplink data packet from the content of the uplink scheduling instruction.
Wherein, the terminal further comprises:
the scheduling instruction analysis unit is used for analyzing the scrambling sequence of the uplink scheduling instruction; the scrambling sequence of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and the feedback indication acquiring unit is further configured to acquire response feedback indication information corresponding to the uplink data packet according to the scrambling sequence of the uplink scheduling instruction.
The response information receiving unit is specifically configured to:
and receiving the ACK/NACK information aiming at the uplink data packet at least one time-frequency position in the limited time-frequency resource set.
And the response feedback indication information corresponding to the downlink data packets of different terminals is different.
The information feedback method of the uplink data instructs the base station to feed back the ACK/NACK information aiming at the uplink data packet at the time-frequency position corresponding to the response feedback indication information by setting the response feedback indication information corresponding to the uplink data packet, and further instructs the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position. The response feedback indication information can be preset according to the delay control requirement or issued to the terminal through the base station, so that smaller ACK/NACK information feedback delay can be realized, the delay between uplink data transmission and corresponding ACK/NACK information feedback is effectively reduced, and the reliability and stability of the uplink data transmission are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a first flowchart of an information feedback method for uplink data according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a data transmission structure of an uplink data information feedback method according to an embodiment of the present invention;
fig. 3 is a schematic view of a first application scenario of an uplink data information feedback method according to an embodiment of the present invention;
fig. 4 is a schematic view of a second application scenario of the uplink data information feedback method according to the embodiment of the present invention;
fig. 5 is a second flowchart of an information feedback method for uplink data according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a first structure of a terminal according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a second structure of the terminal according to the embodiment of the present invention;
fig. 8 is a schematic diagram of a first structure of a base station according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a second structure of a base station according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
In particular implementations, the terminals described in embodiments of the invention include, but are not limited to, other portable devices such as mobile phones, laptop computers, or tablet computers having touch sensitive surfaces (e.g., touch screen displays and/or touch pads). It should also be understood that in some embodiments, the device is not a portable communication device, but is a desktop computer having a touch-sensitive surface (e.g., a touch screen display and/or touchpad).
In the discussion that follows, a terminal that includes a display and a touch-sensitive surface is described. However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, mouse, and/or joystick.
Various applications that may be executed on the terminal may use at least one common physical user interface device, such as a touch-sensitive surface. One or more functions of the touch-sensitive surface and corresponding information displayed on the terminal can be adjusted and/or changed between applications and/or within respective applications. In this way, a common physical architecture (e.g., touch-sensitive surface) of the terminal can support various applications with user interfaces that are intuitive and transparent to the user.
Referring to fig. 1, in an embodiment of the present invention, a method for feeding back information of uplink data is provided, including:
step 101: generating response feedback indication information corresponding to the uplink data packet; wherein, the response feedback indication information is used for indicating the time-frequency position of ACK/NACK information feedback aiming at the uplink data packet;
step 102: determining a time-frequency position for ACK/NACK information feedback of the uplink data packet according to the response feedback indication information;
step 103: and feeding back ACK/NACK information aiming at the uplink data packet at the determined time-frequency position.
The time-frequency position of the ACK/NACK information feedback for the uplink data packet may be a position of a downlink subframe, or a minimum physical resource block that can be mapped by a data packet in a limited time-frequency resource. In all embodiments of the present invention, the smallest physical resource block that can be mapped by one data packet in the limited time-frequency resource is defined as a minimum transmission unit, and the limited time is defined as one transmission interval. It is to be understood that, in a transmission interval, a plurality of the minimum transmission units may be included, and each of the minimum transmission units may be configured to perform transmission of uplink or downlink data. If the minimum transmission unit for uplink transmission and downlink transmission exists in the same transmission interval, a minimum transmission unit needs to be set as a guard interval to realize the conversion between uplink transmission and downlink transmission.
Referring to fig. 2, in the embodiment of the present invention, a transmission interval including 6 minimum transmission units is taken as an example to explain the method proposed in the embodiment of the present invention, and the transmission interval includes 3 minimum transmission units for downlink transmission, 3 minimum transmission units for uplink transmission, and 1 minimum transmission unit as a guard interval. It should be noted that this is merely an example, and more or fewer minimum transmission units may be included in a transmission interval, and the number of minimum transmission units for uplink transmission or downlink transmission may vary. The method proposed in the embodiment of the present invention is also applicable to cases other than the above-described examples based on the same principle.
According to the above definition, the time-frequency position of the uplink data packet transmission may be a minimum transmission unit used for uplink transmission in the transmission interval, and the time-frequency position of ACK/NACK information feedback for the uplink data packet may be a minimum transmission unit used for downlink transmission in the same transmission interval. Therefore, in the embodiment of the present invention, the response feedback indication information is used to instruct the base station to feed back ACK/NACK information for the uplink data packet on a certain minimum transmission unit after the base station receives the uplink data packet. It can be understood that the response feedback indication information may be an interval between transmission of the uplink data packet and a minimum transmission unit for transmitting the ACK/NACK information, for example, if the uplink data packet is transmitted on a kth minimum transmission unit of one transmission interval, the response feedback indication information may be j, and after the base station receives the uplink data packet on the kth minimum transmission unit, the ACK/NACK information for the uplink data packet may be fed back to the terminal on a (k + j) th minimum transmission unit, and the terminal is instructed by the response feedback indication information to receive the ACK/NACK information for the uplink data packet on the corresponding minimum transmission unit.
In an embodiment, the generating of the response feedback indication information corresponding to the uplink data packet includes:
acquiring predefined response feedback indication information; or,
informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through system information, a wireless resource control signaling, a media access control signaling or a physical layer signaling;
wherein, the system information, the radio resource control signaling, the media access control signaling or the physical layer signaling carries the response feedback indication information corresponding to the uplink data packet.
Specifically, a fixed feedback time interval between ACK/NACK information transmission and uplink data packet transmission (in this embodiment, the feedback time interval may be a minimum number of transmission units between two minimum transmission units used for transmitting an uplink data packet and ACK/NACK information or a difference between numbers of the two minimum transmission units) may be predefined on the base station side as the predefined feedback indication information, and after the base station receives an uplink data packet on a certain minimum transmission unit, the base station acquires the predefined feedback indication information and feeds back ACK/NACK information for the uplink data packet on a predetermined minimum transmission unit according to the predefined feedback indication information. Meanwhile, the base station can also inform the terminal of the feedback indication information through system information, radio resource control signaling, media access control signaling or physical layer signaling, so as to indicate the terminal to receive the ACK/NACK information aiming at the downlink data packet at the corresponding time-frequency position. It should be noted that, for uplink data packets of different terminals, the feedback time intervals notified by the base station may be the same or different. As shown in fig. 3, if the fixed feedback time interval is predefined as 2 minimum transmission units, and the base station receives the uplink data packet in the 1 st, 2 nd, and 3 th minimum transmission units, the base station feeds back corresponding ACK/NACK information in the 4 th, 5 th, and 6 th minimum transmission units, respectively.
In an embodiment, the generating of the response feedback indication information corresponding to the uplink data packet includes:
generating an uplink scheduling instruction aiming at an uplink data packet, wherein the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through the uplink scheduling instruction.
Specifically, the base station may inform the terminal of the time-frequency location of receiving the ACK/NACK information through explicit signaling. For example, the base station may carry response feedback indication information corresponding to the uplink data packet in an uplink scheduling instruction for the uplink data packet, and may further notify the terminal to receive ACK/NACK information for the uplink data packet at a corresponding time-frequency position through the uplink scheduling instruction. Correspondingly, after receiving the uplink scheduling instruction, the terminal obtains the response feedback indication information by analyzing the uplink scheduling instruction, and then receives ACK/NACK information at a corresponding position.
In an embodiment, the generating of the response feedback indication information corresponding to the uplink data packet includes:
generating an uplink scheduling instruction for an uplink data packet and a scrambling sequence of the uplink scheduling instruction, wherein the scrambling sequence of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through the scrambling sequence of the uplink scheduling instruction.
Specifically, the response feedback indication information corresponding to the uplink data packet may be determined by different scrambling sequences. For example, a mapping relationship between scrambling sequences and ACK/NACK information feedback time-frequency positions may be preset at a base station side and a terminal side, each scrambling sequence is mapped with one piece of response feedback indication information, and after the terminal receives the uplink scheduling instruction, the terminal obtains the response feedback indication information by analyzing the scrambling sequence of the uplink scheduling instruction, so that after the terminal sends the uplink data packet, the terminal may receive ACK/NACK information for the uplink data packet on a corresponding minimum transmission unit according to the response feedback indication information.
In one embodiment, the feeding back ACK/NACK information for the uplink data packet at the determined time-frequency position includes:
and feeding back ACK/NACK information aiming at the uplink data packet at least one time-frequency position in the limited time-frequency resource set.
Specifically, the base station may have a plurality of time-frequency resource locations (corresponding to the minimum transmission unit in this embodiment) where the ACK/NACK information can be fed back, and the base station may select to feed back the ACK/NACK information on one of the time-frequency resource locations, or may select to feed back the ACK/NACK information on a plurality of time-frequency resource locations. Under the condition that the ACK/NACK information is fed back at a plurality of time-frequency resource positions, the terminal needs to detect the ACK/NACK information at a plurality of corresponding time-frequency resource positions. As shown in fig. 4, the ACK/NACK information corresponding to the uplink data packet received by the base station on the 1 st minimum transmission unit may be fed back on the 4 th and 5 th minimum transmission units; the ACK/NACK information corresponding to the uplink data packet received by the base station on the 2 nd and 3 rd minimum transmission units may be fed back on the 6 th minimum transmission unit. In this way, the terminal needs to detect ACK/NACK information corresponding to the uplink data packet sent on the 1 st minimum transmission unit on the 4 th and 5 th minimum transmission units; and detecting ACK/NACK information corresponding to the uplink data packets sent on the 2 nd and the 3 rd minimum transmission units on the 6 th minimum transmission unit.
It can be understood that, in this embodiment, when the response feedback indication information corresponding to the uplink data packet is generated, the response feedback indication information corresponding to the uplink data packets of different terminals is different.
It can be understood that, in this embodiment, an execution main body of the ACK/NACK information feedback method for downlink data may be a communication device, for example, a base station.
Referring to fig. 5, in an embodiment of the present invention, a method for feeding back ACK/NACK information of downlink data is provided, including:
step 501: acquiring response feedback indication information corresponding to an uplink data packet; wherein, the response feedback indication information is used for indicating the time-frequency position of ACK/NACK information feedback aiming at the uplink data packet;
step 502: determining a time-frequency position for ACK/NACK information feedback of the uplink data packet according to the response feedback indication information;
step 503: and receiving the ACK/NACK information aiming at the uplink data packet according to the determined time-frequency position.
In an embodiment, the obtaining response feedback indication information corresponding to an uplink data packet includes:
acquiring predefined feedback indication information; or,
acquiring response feedback indication information corresponding to an uplink data packet according to system information, a radio resource control signaling, a media access control signaling or a physical layer signaling sent by a base station;
wherein, the system information, the radio resource control signaling, the media access control signaling or the physical layer signaling carries the response feedback indication information corresponding to the uplink data packet.
Specifically, a feedback time interval between fixed ACK/NACK information transmission and uplink data packet transmission (in this embodiment, the feedback time interval may be a minimum number of transmission units between two minimum transmission units for transmitting an uplink data packet and ACK/NACK information or a difference between numbers of the two minimum transmission units) may be predefined on the terminal side as the predefined feedback indication information, and after the terminal sends an uplink data packet on a certain minimum transmission unit, the terminal obtains the predefined feedback indication information and receives ACK/NACK information for the uplink data packet on a predetermined minimum transmission unit according to the predefined feedback indication information. It is to be understood that the feedback indication information may also be notified to the terminal by the base station through system information, radio resource control signaling, medium access control signaling, or physical layer signaling. It should be noted that, for uplink data packets of different terminals, the feedback time intervals notified by the base station may be the same or different.
In an embodiment, the obtaining response feedback indication information corresponding to an uplink data packet includes:
acquiring an uplink scheduling instruction aiming at an uplink data packet; the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and acquiring response feedback indication information corresponding to the uplink data packet according to the uplink scheduling instruction.
In an embodiment, the obtaining, according to the uplink scheduling instruction, response feedback indication information corresponding to the uplink data packet includes:
analyzing the content of the uplink scheduling instruction; the content of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and acquiring response feedback indication information corresponding to the uplink data packet from the content of the uplink scheduling instruction.
Specifically, the base station may inform the terminal of the time-frequency location of receiving the ACK/NACK information through explicit signaling. For example, the base station may carry response feedback indication information corresponding to the uplink data packet in an uplink scheduling instruction for the uplink data packet, and may further notify the terminal to receive ACK/NACK information for the uplink data packet at a corresponding time-frequency position through the uplink scheduling instruction. Correspondingly, after receiving the uplink scheduling instruction, the terminal obtains the response feedback indication information by analyzing the content of the uplink scheduling instruction, and then receives the ACK/NACK information at the corresponding position.
In an embodiment, the obtaining, according to the uplink scheduling instruction, response feedback indication information corresponding to the uplink data packet includes:
analyzing a scrambling sequence of the uplink scheduling instruction; the scrambling sequence of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and acquiring response feedback indication information corresponding to the uplink data packet according to the scrambling sequence of the uplink scheduling instruction.
Specifically, the response feedback indication information corresponding to the uplink data packet may be determined by different scrambling sequences. For example, a mapping relationship between scrambling sequences and ACK/NACK information feedback time-frequency positions may be preset at a base station side and a terminal side, each scrambling sequence is mapped with one piece of response feedback indication information, and after the terminal receives the uplink scheduling instruction, the terminal obtains the response feedback indication information by analyzing the scrambling sequence of the uplink scheduling instruction, so that after the terminal sends the uplink data packet, the terminal may receive ACK/NACK information for the uplink data packet on a corresponding minimum transmission unit according to the response feedback indication information.
In one embodiment, receiving ACK/NACK information for the uplink data packet according to the determined time-frequency position includes:
and receiving the ACK/NACK information aiming at the uplink data packet at least one time-frequency position in the limited time-frequency resource set.
Specifically, the base station may have multiple time-frequency resource locations (corresponding to the minimum transmission unit in this embodiment) where the ACK/NACK information may be fed back, and the base station may select to feed back the ACK/NACK information on one of the time-frequency resource locations, or may select to feed back the ACK/NACK information on multiple time-frequency resource locations. Under the condition that the ACK/NACK information is fed back at a plurality of time-frequency resource positions, the terminal needs to detect the ACK/NACK information at a plurality of corresponding time-frequency resource positions.
In an embodiment, the response feedback indication information corresponding to uplink data packets of different terminals is different.
It can be understood that, in this embodiment, an execution main body of the ACK/NACK information feedback method for downlink data may be a mobile terminal, for example, a mobile phone.
It can be understood that, in this embodiment, specific implementation of each step of the method for feeding back ACK/NACK information of downlink data may also refer to relevant description in the embodiments shown in fig. 1 to fig. 4, and is not described herein again.
Referring to fig. 6, in an embodiment of the present invention, a terminal 60 is provided, including:
a feedback indication obtaining unit 61, configured to obtain response feedback indication information corresponding to the uplink data packet; wherein, the response feedback indication information is used for indicating the time-frequency position of ACK/NACK information feedback aiming at the uplink data packet;
a feedback position determining unit 63, configured to determine, according to the response feedback indication information, a time-frequency position of ACK/NACK information feedback for the downlink data packet;
and the response information receiving unit 65 is configured to receive ACK/NACK information for the uplink data packet according to the determined time-frequency position.
In an embodiment, the feedback indication acquiring unit 61 is specifically configured to:
acquiring predefined feedback indication information; or,
acquiring response feedback indication information corresponding to an uplink data packet according to system information, a radio resource control signaling, a media access control signaling or a physical layer signaling sent by a base station;
wherein, the system information, the radio resource control signaling, the media access control signaling or the physical layer signaling carries the response feedback indication information corresponding to the uplink data packet.
In an embodiment, the feedback indication acquiring unit 61 is specifically configured to:
acquiring an uplink scheduling instruction aiming at an uplink data packet; the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and acquiring response feedback indication information corresponding to the uplink data packet according to the uplink scheduling instruction.
In one embodiment, the terminal 60 further includes:
a scheduling instruction parsing unit 67, configured to parse the content of the uplink scheduling instruction; the content of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
the feedback instruction obtaining unit 61 is further configured to obtain response feedback instruction information corresponding to the uplink data packet from the content of the uplink scheduling instruction.
In an embodiment, the scheduling instruction parsing unit 67 is configured to parse a scrambling sequence of the uplink scheduling instruction; the scrambling sequence of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
the feedback indication obtaining unit 61 is further configured to obtain response feedback indication information corresponding to the uplink data packet according to the scrambling sequence of the uplink scheduling instruction.
In an embodiment, the response information receiving unit 65 is specifically configured to:
and receiving the ACK/NACK information aiming at the uplink data packet at least one time-frequency position in the limited time-frequency resource set.
In an embodiment, the response feedback indication information corresponding to downlink data packets of different terminals is different.
It can be understood that, in this embodiment, the functions of each unit of the terminal 60 and the specific implementation thereof may also refer to the related description in the method embodiment shown in fig. 5, and are not described herein again.
Referring to fig. 7, in an embodiment of the present invention, a terminal 70 applying the information feedback method for uplink data is provided, where the terminal 70 may be a mobile terminal, such as a mobile phone.
The terminal 70 includes: at least one processor 71, such as a CPU, at least one communication bus 72, a user interface 73, at least one communication interface 74, and a memory 75. The communication bus 72 is used for realizing communication connection among the components of the terminal 70. The user interface 73 may comprise a touch screen, and in addition, the user interface 73 may comprise a standard wired interface, a wireless interface. The communication interface 74 may include standard wired interfaces (e.g., data line interface, network line interface, etc.), wireless interfaces (e.g., mobile communication interfaces such as 2G, 3G, 4G, 5G, WI-FI interface, bluetooth interface, near field communication interface, etc.), and the communication interface 74 may be used for data communication with a base station. The memory 75 may be a high-speed RAM memory or a non-volatile memory (non-volatile memory), such as at least one disk memory. In one embodiment of the present invention, the memory 75 may also be at least one storage device located remotely from the aforementioned processor 71. As shown in fig. 7, the memory 75, which is a kind of computer storage medium, may include therein an operating system, a user interface module, and an information receiving module. Wherein the operating system is used to coordinate the operation of the components of the terminal 70. The user interface module is used to store and maintain user data for the terminal 70.
In this embodiment, the processor 71 is configured to invoke the information receiving module, and perform the following operations:
acquiring response feedback indication information corresponding to an uplink data packet; wherein, the response feedback indication information is used for indicating the time-frequency position of ACK/NACK information feedback aiming at the uplink data packet;
determining a time-frequency position for ACK/NACK information feedback of the uplink data packet according to the response feedback indication information;
and receiving the ACK/NACK information aiming at the uplink data packet according to the determined time-frequency position.
The obtaining of the response feedback indication information corresponding to the uplink data packet includes:
acquiring predefined feedback indication information; or,
acquiring response feedback indication information corresponding to an uplink data packet according to system information, a radio resource control signaling, a media access control signaling or a physical layer signaling sent by a base station;
wherein, the system information, the radio resource control signaling, the media access control signaling or the physical layer signaling carries the response feedback indication information corresponding to the uplink data packet.
The obtaining of the response feedback indication information corresponding to the uplink data packet includes:
acquiring an uplink scheduling instruction aiming at an uplink data packet; the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and acquiring response feedback indication information corresponding to the uplink data packet according to the uplink scheduling instruction.
Wherein, the obtaining of the response feedback indication information corresponding to the uplink data packet according to the uplink scheduling instruction includes:
analyzing the content of the uplink scheduling instruction; the content of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and acquiring response feedback indication information corresponding to the uplink data packet from the content of the uplink scheduling instruction.
Wherein, the obtaining of the response feedback indication information corresponding to the uplink data packet according to the uplink scheduling instruction includes:
analyzing a scrambling sequence of the uplink scheduling instruction; the scrambling sequence of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and acquiring response feedback indication information corresponding to the uplink data packet according to the scrambling sequence of the uplink scheduling instruction.
Receiving ACK/NACK information for the uplink data packet according to the determined time-frequency position, including:
and receiving the ACK/NACK information aiming at the uplink data packet at least one time-frequency position in the limited time-frequency resource set.
And the response feedback indication information corresponding to the uplink data packets of different terminals is different.
It is to be understood that, in this embodiment, specific implementation of the above operation steps executed by the processor 71 of the terminal 70 may also refer to relevant description in the method embodiment shown in fig. 5, and details are not described here again.
Referring to fig. 8, in an embodiment of the present invention, a base station 80 is provided, including:
a feedback indication generating unit 81, configured to generate response feedback indication information corresponding to the uplink data packet; wherein, the response feedback indication information is used for indicating the time-frequency position of ACK/NACK information feedback aiming at the uplink data packet;
a feedback position determining unit 83, configured to determine, according to the response feedback indication information, a time-frequency position where ACK/NACK information for the uplink data packet is fed back;
and the response information feedback unit 85 is configured to feed back ACK/NACK information for the uplink data packet at the determined time-frequency position.
In an embodiment, the feedback indication generating unit 81 is specifically configured to:
acquiring predefined response feedback indication information; or,
informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through system information, a wireless resource control signaling, a media access control signaling or a physical layer signaling;
wherein, the system information, the radio resource control signaling, the media access control signaling or the physical layer signaling carries the response feedback indication information corresponding to the uplink data packet.
In one embodiment, the base station 80 further includes:
a scheduling instruction generating unit 87, configured to generate an uplink scheduling instruction for an uplink data packet, where the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
the feedback indication generating unit 81 is further configured to notify the terminal to receive ACK/NACK information for the uplink data packet at a corresponding time-frequency position through the uplink scheduling instruction.
In an embodiment, the scheduling instruction generating unit 87 is configured to generate an uplink scheduling instruction for an uplink data packet and a scrambling sequence of the uplink scheduling instruction, where the scrambling sequence of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
the feedback indication generating unit 81 is further configured to notify the terminal, through the scrambling sequence of the uplink scheduling instruction, of receiving ACK/NACK information for the uplink data packet at a corresponding time-frequency position.
In an embodiment, the response information feedback unit 85 is specifically configured to:
and feeding back ACK/NACK information aiming at the uplink data packet at least one time-frequency position in the limited time-frequency resource set.
In an embodiment, when the response feedback indication information corresponding to the uplink data packet is generated, the response feedback indication information corresponding to the uplink data packet of different terminals is different.
It can be understood that, in this embodiment, the functions of each unit of the base station 80 and the specific implementation thereof may also refer to the related descriptions in the method embodiments shown in fig. 1 to fig. 4, and are not described herein again.
Referring to fig. 9, in an embodiment of the present invention, a base station 90 is provided, which includes at least one processor 91, a memory 93, a communication interface 95 and a bus 97, where the at least one processor 91, the memory 93 and the communication interface 95 are connected by the bus 97 and complete mutual communication; the processor 91 is configured to call the executable program code stored in the memory 93, and perform the following operations:
generating response feedback indication information corresponding to the uplink data packet; wherein, the response feedback indication information is used for indicating the time-frequency position of ACK/NACK information feedback aiming at the uplink data packet;
determining a time-frequency position for ACK/NACK information feedback of the uplink data packet according to the response feedback indication information;
and feeding back ACK/NACK information aiming at the uplink data packet at the determined time-frequency position.
Wherein, the generating of the response feedback indication information corresponding to the uplink data packet includes:
acquiring predefined response feedback indication information; or,
informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through system information, a wireless resource control signaling, a media access control signaling or a physical layer signaling;
wherein, the system information, the radio resource control signaling, the media access control signaling or the physical layer signaling carries the response feedback indication information corresponding to the uplink data packet.
Wherein, the generating of the response feedback indication information corresponding to the uplink data packet includes:
generating an uplink scheduling instruction aiming at an uplink data packet, wherein the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through the uplink scheduling instruction.
Wherein, the generating of the response feedback indication information corresponding to the uplink data packet includes:
generating an uplink scheduling instruction for an uplink data packet and a scrambling sequence of the uplink scheduling instruction, wherein the scrambling sequence of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through the scrambling sequence of the uplink scheduling instruction.
Wherein the feeding back ACK/NACK information for the uplink data packet at the determined time-frequency position includes:
and feeding back ACK/NACK information aiming at the uplink data packet at least one time-frequency position in the limited time-frequency resource set.
And when the response feedback indication information corresponding to the uplink data packet is generated, the response feedback indication information corresponding to the uplink data packets of different terminals is different.
It can be understood that, in this embodiment, specific implementation of the above operation steps executed by the processor 91 of the base station 90 may also refer to relevant descriptions in the method embodiments shown in fig. 1 to fig. 4, and details are not described here again.
The information feedback method of the uplink data instructs the base station to feed back the ACK/NACK information aiming at the uplink data packet at the time-frequency position corresponding to the response feedback indication information by setting the response feedback indication information corresponding to the uplink data packet, and further instructs the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position. The response feedback indication information can be preset according to the delay control requirement or issued to the terminal through the base station, so that smaller ACK/NACK information feedback delay can be realized, the delay between uplink data transmission and corresponding ACK/NACK information feedback is effectively reduced, and the reliability and stability of the uplink data transmission are improved.
In the several embodiments provided in the present application, it should be understood that the disclosed terminal and method can be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.
The units in the terminal of the embodiment of the invention can be merged, divided and deleted according to actual needs.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (12)
1. An information feedback method of uplink data is characterized by comprising the following steps:
generating response feedback indication information corresponding to the uplink data packet; wherein, the response feedback indication information is used for indicating the time-frequency position of ACK/NACK information feedback aiming at the uplink data packet;
determining a time-frequency position for ACK/NACK information feedback of the uplink data packet according to the response feedback indication information;
and feeding back ACK/NACK information aiming at the uplink data packet at the determined time-frequency position.
2. The method of claim 1, wherein the generating the response feedback indication information corresponding to the uplink data packet comprises:
acquiring predefined response feedback indication information; or,
informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through system information, a wireless resource control signaling, a media access control signaling or a physical layer signaling;
wherein, the system information, the radio resource control signaling, the media access control signaling or the physical layer signaling carries the response feedback indication information corresponding to the uplink data packet.
3. The method of claim 1, wherein the generating the response feedback indication information corresponding to the uplink data packet comprises:
generating an uplink scheduling instruction aiming at an uplink data packet, wherein the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through the uplink scheduling instruction.
4. The method of claim 1, wherein the generating the response feedback indication information corresponding to the uplink data packet comprises:
generating an uplink scheduling instruction for an uplink data packet and a scrambling sequence of the uplink scheduling instruction, wherein the scrambling sequence of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through the scrambling sequence of the uplink scheduling instruction.
5. The method according to any one of claims 1-4, wherein the feeding back the ACK/NACK information for the uplink data packet at the determined time-frequency position comprises:
and feeding back ACK/NACK information aiming at the uplink data packet at least one time-frequency position in the limited time-frequency resource set.
6. The method according to any one of claims 1 to 4, wherein when the response feedback indication information corresponding to the uplink data packet is generated, the response feedback indication information corresponding to the uplink data packets of different terminals are different.
7. A base station, comprising:
a feedback indication generating unit, configured to generate response feedback indication information corresponding to the uplink data packet; wherein, the response feedback indication information is used for indicating the time-frequency position of ACK/NACK information feedback aiming at the uplink data packet;
a feedback position determining unit, configured to determine, according to the response feedback indication information, a time-frequency position of ACK/NACK information feedback for the uplink data packet;
and the response information feedback unit is used for feeding back the ACK/NACK information aiming at the uplink data packet at the determined time-frequency position.
8. The base station of claim 7, wherein the feedback indication generating unit is specifically configured to:
acquiring predefined response feedback indication information; or,
informing the terminal to receive the ACK/NACK information aiming at the uplink data packet at the corresponding time-frequency position through system information, a wireless resource control signaling, a media access control signaling or a physical layer signaling;
wherein, the system information, the radio resource control signaling, the media access control signaling or the physical layer signaling carries the response feedback indication information corresponding to the uplink data packet.
9. The base station of claim 7, wherein the base station further comprises:
a scheduling instruction generating unit, configured to generate an uplink scheduling instruction for an uplink data packet, where the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and the feedback indication generating unit is further configured to notify the terminal to receive ACK/NACK information for the uplink data packet at a corresponding time-frequency position through the uplink scheduling instruction.
10. The base station of claim 7, wherein the base station further comprises:
a scheduling instruction generating unit, configured to generate an uplink scheduling instruction for an uplink data packet and a scrambling sequence of the uplink scheduling instruction, where the scrambling sequence of the uplink scheduling instruction carries response feedback indication information corresponding to the uplink data packet;
and the feedback indication generating unit is further configured to notify the terminal of receiving ACK/NACK information for the uplink data packet at a corresponding time-frequency position through the scrambling sequence of the uplink scheduling instruction.
11. The base station according to any of claims 7 to 10, wherein the response information feedback unit is specifically configured to:
and feeding back ACK/NACK information aiming at the uplink data packet at least one time-frequency position in the limited time-frequency resource set.
12. The base station according to any of claims 7 to 10, wherein when the response feedback indication information corresponding to the uplink data packet is generated, the response feedback indication information corresponding to the uplink data packets of different terminals are different.
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| PCT/CN2016/113408 WO2018028128A1 (en) | 2016-08-11 | 2016-12-30 | Method for feeding back information of uplink data and related apparatus |
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| CN201610664990.8A CN106301700A (en) | 2016-08-11 | 2016-08-11 | The information feedback method of a kind of upstream data and relevant device |
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