WO2017161971A1 - 一种反馈信息的传输方法及装置 - Google Patents
一种反馈信息的传输方法及装置 Download PDFInfo
- Publication number
- WO2017161971A1 WO2017161971A1 PCT/CN2017/073101 CN2017073101W WO2017161971A1 WO 2017161971 A1 WO2017161971 A1 WO 2017161971A1 CN 2017073101 W CN2017073101 W CN 2017073101W WO 2017161971 A1 WO2017161971 A1 WO 2017161971A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transmission
- ack
- downlink
- tti
- feedback information
- Prior art date
Links
Images
Classifications
-
- 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
Definitions
- the present application relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting feedback information.
- TTI Transmission Time Interval
- NACK Non-acknowledgement
- LTE Rel-8/9/10/11/12/1 The existing LTE frame structure (LTE Rel-8/9/10/11/12/13) is introduced as follows:
- uplink and downlink transmissions use different carrier frequencies, and both uplink and downlink transmissions use the same frame structure.
- a 10ms-length radio frame contains 10 1ms subframes, each of which is divided into two 0.5ms long slots.
- the TTI duration of the uplink and downlink data is 1 ms.
- Each 10 ms radio frame in FS2 consists of two 5 ms half frames, each of which contains five subframes of 1 ms length.
- the sub-frames in FS2 are classified into three types: downlink sub-frames, uplink sub-frames, and special sub-frames.
- Each special sub-frame consists of a downlink transmission time slot (DwPTS, Downlink Pilot Time Slot), a guard interval (GP, Guard Period), and
- the uplink transmission time slot (UpPTS, Uplink Pilot Time Slot) is composed of three parts.
- the DwPTS can transmit the downlink pilot, the downlink service data, and the downlink control signaling, and the GP does not transmit any signal.
- the UpPTS only transmits the random access and sounding reference signal (SRS), and cannot transmit the uplink service or the uplink control information.
- SRS random access and sounding reference signal
- Each field includes at least one downlink subframe and at least one uplink subframe, and at most one special subframe. Table 7 lists the seven uplink and downlink subframe configurations supported by FS2.
- the ACK/NACK feedback timing of the existing LTE FDD/TDD is introduced as follows:
- each K value in the set of K ⁇ k 0 , k 1 , ... k M-1 ⁇ corresponding to the uplink subframe numbered n can be determined to be in the uplink subframe.
- the downlink subframe that performs the ACK/NACK feedback (that is, the downlink subframe numbered nk, including the special subframe) needs to feed back the ACK/NACK feedback information of the M downlink subframes in the same uplink subframe, where M is the set.
- the number of elements in K is not necessarily the same for different uplink subframes and different TDD uplink and downlink configurations.
- Table 2 TDD system downlink association set index K: ⁇ k 0 , k 1 ,...k M-1 ⁇
- the numbers in the above table are in the form of radio frames, and the subframes numbered n-k, if n-k is less than 0, indicate the subframes in the previous radio frame;
- one terminal can work on multiple carriers at the same time, but only ACK/NACK feedback information can be transmitted in the Physical Uplink Control Channel (PUCCH) on some carriers, such as the primary member. Primary Component Carrier (PCC). Therefore, the terminal needs to feed back ACK/NACK feedback information corresponding to multiple carriers in one uplink subframe.
- the ACK/NACK feedback timing on each carrier is performed according to n+4; when the carriers aggregated by the terminal are all TDD carriers, if all TDD carriers are TDD uplink and downlink configuration Same, then ACK/NACK feedback on each carrier The sequence is performed according to the feedback timing shown in Table 2 corresponding to the TDD uplink and downlink configuration.
- the secondary component carrier (Secondary Component) needs to be according to a specific rule.
- Carrier, SCC defines the reference TDD uplink and downlink configuration, and performs ACK/NACK feedback according to the feedback timing in Table 2 corresponding to the TDD uplink and downlink configuration; when the carrier aggregated by the terminal includes both the FDD carrier and the TDD carrier, if the FDD carrier As the PCC, the ACK/NACK feedback timing on each carrier is performed according to n+4. If the TDD carrier is used as the PCC, the reference TDD uplink and downlink configuration needs to be defined for the SCC according to a specific rule, according to the reference TDD uplink and downlink configuration.
- the corresponding feedback timing in Table 2 performs ACK/NACK feedback.
- the aggregation carrier is further divided into multiple carrier groups, and ACK/NACK feedback is performed on the PUCCH on one carrier in each carrier group. At this time, each carrier group is aggregated according to the carrier group.
- One of the above situations corresponding to the carrier determines the feedback timing of the SCC in the carrier group.
- the embodiment of the present application provides a method and a device for transmitting feedback information, which are used to define a new feedback timing when using downlink dynamically variable TTI length transmission to determine that ACK/NACK feedback information of one downlink data is satisfied. Feedback is made on the earliest uplink transmission resources of the delay, thereby reducing system delay.
- a method for sending feedback information includes:
- the second TTI length is a TTI length configured for configuration signaling or pre-agreed for determining an uplink time domain resource location for ACK/NACK feedback information transmission.
- the downlink transmission Receiving, by the method, the downlink transmission, and determining, according to the TTI length and/or the second TTI length of the downlink transmission, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information, and in the uplink
- the time domain resource location sends the ACK/NACK feedback information of the downlink transmission, thereby defining a new feedback timing, and determining that the ACK/NACK feedback information of one downlink data is fed back on the earliest uplink transmission resource that meets the processing delay, Thereby reducing system latency.
- determining, according to the TTI length of the downlink transmission, the ACK/NACK feedback information transmission of the downlink transmission Transmitting the uplink time domain resource location, and sending the downlink transmission ACK/NACK feedback information in the uplink time domain resource location specifically:
- the L1 is a length of the downlink transmitted TTI in units of time
- the L2 is a length of the downlink transmitted TTI in units of symbols, where k is a pre-agreed or configured positive integer or Decimal.
- a time length not earlier than L3*k or a first one of L4*k symbols may be used for ACK/NACK transmission Transmitting the ACK/NACK feedback information of the downlink transmission in the uplink time domain resource;
- determining that a time length of not less than L3*k or a first one of L4*k symbols is separated from an end time position or an end symbol position of the downlink transmission determined according to the first TTI length may be used for ACK/NACK transmission Transmitting the ACK/NACK feedback information of the downlink transmission in the uplink time domain resource;
- the first uplink time domain resource available for ACK/NACK transmission after the time length of L3*k or after L4*k symbols The ACK/NACK feedback information of the downlink transmission
- the L3 is the first TTI length in units of time
- the L4 is the first TTI length in units of symbols
- the k is a pre-agreed or configured positive integer or fraction
- the first TTI length is the second TTI length, or is the maximum or minimum or average value of the second TTI length and the TTI length of the downlink transmission.
- determining, according to the TTI length of the downlink transmission and/or the second TTI length, the uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission specifically:
- Location including:
- the configuration signaling is a high layer signaling, or the configuration signaling is carried in a first physical downlink control channel corresponding to the downlink transmission;
- the configuration signaling is for downlink transmissions using different TTI lengths, and the configured second TTI lengths are the same or different.
- the configuring the signaling to configure the second TTI length includes:
- the configuration signaling indicates a pre-agreed or configured ACK/NACK feedback signal for determining the downlink transmission.
- One of the set of TTI lengths of the uplink time domain resource location of the interest transmission is the second TTI length;
- the configuration signaling indicates an offset value of the second TTI length relative to a TTI length of the downlink transmission.
- the uplink time domain resource that can be used for ACK/NACK transmission includes:
- the number of consecutive symbols for uplink transmission is not less than a preset number of subframes
- a symbol/B TTIs in all or part of the uplink subframe where A is a number of symbols required for transmission of the ACK/NACK feedback information, and the A is a positive integer, the B Transmitting the number of TTIs required for the ACK/NACK feedback information, where B is a positive integer;
- a symbols/B TTIs in a subframe including symbols for uplink transmission
- all or part of the number of consecutive symbols for uplink transmission is not less than a number of A symbols/B TTIs in a preset number of subframes.
- the method specifically includes:
- the downlink transmission is a first physical downlink control channel indicating that the downlink SPS resource is released, or is a first physical downlink shared channel with a corresponding first physical downlink control channel, or is a first physical downlink without corresponding The first physical downlink shared channel of the control channel.
- the second TTI length is a basic short TTI unit, where the basic short TTI unit is a basic unit of time domain transmission; or the second TTI length is one of multiple TTI lengths supported by the system.
- a method for receiving feedback information includes:
- ACK/NACK feedbacks the uplink time domain resource location of the information transmission, and receives the downlink transmission ACK/NACK feedback information at the uplink time domain resource location, where the second TTI length is configured or pre-agreed by the configuration signaling
- the TTI length of the uplink time domain resource location used to determine the ACK/NACK feedback information transmission.
- determining an uplink time domain resource location of the downlink transmitted ACK/NACK feedback information transmission according to the TTI length of the downlink transmission and receiving the downlink transmission ACK/NACK feedback at the uplink time domain resource location.
- Information including:
- TTI numbering on the TTI length of the downlink transmission, and determining to receive the ACK/NACK feedback of the downlink transmission in an uplink time domain resource that is available for ACK/NACK transmission after the TTI numbered n+k Information, wherein the TTI number of the downlink transmission is n;
- the L1 is a length of the downlink transmitted TTI in units of time
- the L2 is a length of the downlink transmitted TTI in units of symbols, where k is a pre-agreed or configured positive integer or Decimal.
- determining an uplink time domain resource location of the downlink transmitted ACK/NACK feedback information transmission according to the TTI length of the downlink transmission and/or the second TTI length, and in the uplink time domain resource location Receiving the ACK/NACK feedback information of the downlink transmission specifically:
- a time length not earlier than L3*k or a first one of L4*k symbols may be used for ACK/NACK transmission Receiving the downlink transmission ACK/NACK feedback information in the uplink time domain resource;
- the TTI number of the downlink transmission is n;
- determining that a time length of not less than L3*k or a first one of L4*k symbols is separated from an end time position or an end symbol position of the downlink transmission determined according to the first TTI length may be used for ACK/NACK transmission Receiving the downlink transmission ACK/NACK feedback information in the uplink time domain resource;
- determining to receive in an uplink time domain resource that is not less than L3*k or an uplink time domain resource that is available for ACK/NACK transmission of L4*k symbols with an end time position or an end symbol position of the downlink transmission not less than L3*k The ACK/NACK feedback information of the downlink transmission;
- the L3 is the first TTI length in units of time
- the L4 is the first TTI length in units of symbols
- the k is a pre-agreed or configured positive integer or fraction
- the first TTI length is the second TTI length, or is the maximum or minimum or average value of the second TTI length and the TTI length of the downlink transmission.
- determining, according to the TTI length of the downlink transmission and/or the second TTI length, the uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission specifically:
- Location including:
- the configuration signaling is a high layer signaling, or the configuration signaling is carried in a first physical downlink control channel corresponding to the downlink transmission;
- the configuration signaling is for downlink transmissions using different TTI lengths, and the configured second TTI lengths are the same or different.
- the configuring the signaling to configure the second TTI length includes:
- the configuration signaling indicates that one of the set of TTI lengths of the uplink time domain resource location used for determining the downlink ACK/NACK feedback information transmission, which is pre-agreed or configured, is the second TTI length;
- the configuration signaling indicates an offset value of the second TTI length relative to a TTI length of the downlink transmission.
- the uplink time domain resource that can be used for ACK/NACK transmission includes:
- the number of consecutive symbols for uplink transmission is not less than a preset number of subframes
- a symbol/B TTIs in all or part of the uplink subframe where A is a number of symbols required for transmission of the ACK/NACK feedback information, and the A is a positive integer, the B Transmitting the number of TTIs required for the ACK/NACK feedback information, where B is a positive integer;
- a symbols/B TTIs in a subframe including symbols for uplink transmission
- all or part of the number of consecutive symbols for uplink transmission is not less than a number of A symbols/B TTIs in a preset number of subframes.
- the method specifically includes:
- the downlink transmission is a first physical downlink control channel indicating that the downlink SPS resource is released, or is a first physical downlink shared channel with a corresponding first physical downlink control channel, or is a first physical downlink without corresponding The first physical downlink shared channel of the control channel.
- the second TTI length is a basic short TTI unit, and the basic short TTI unit is a base of time domain transmission.
- the unit; or the second TTI length is one of a plurality of TTI lengths supported by the system.
- a device for sending feedback information provided by an embodiment of the present application includes:
- a receiving unit configured to receive a downlink transmission
- a sending unit configured to determine, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission, and in the uplink time domain
- the resource location sends the ACK/NACK feedback information of the downlink transmission, where the second TTI length is a TTI length configured by the configuration signaling or pre-agreed for determining an uplink time domain resource location of the ACK/NACK feedback information transmission.
- the sending unit determines, according to the TTI length of the downlink transmission, an uplink time domain resource location of the downlink transmitted ACK/NACK feedback information, and sends the downlink transmission at the uplink time domain resource location.
- ACK/NACK feedback information including:
- the L1 is a length of the downlink transmitted TTI in units of time
- the L2 is a length of the downlink transmitted TTI in units of symbols, where k is a pre-agreed or configured positive integer or Decimal.
- the sending unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission, and in the uplink
- the time domain resource location sends the ACK/NACK feedback information of the downlink transmission, which specifically includes:
- the ACK/NACK feedback information of the downlink transmission is transmitted not earlier than the time length of L3*k or the first uplink time domain resource of the L4*k symbols available for ACK/NACK transmission;
- determining that a time length of not less than L3*k or a first one of L4*k symbols is separated from an end time position or an end symbol position of the downlink transmission determined according to the first TTI length may be used for ACK/NACK transmission Transmitting the ACK/NACK feedback information of the downlink transmission in the uplink time domain resource;
- the first uplink time domain resource available for ACK/NACK transmission after the time length of L3*k or after L4*k symbols The ACK/NACK feedback information of the downlink transmission
- the L3 is the first TTI length in units of time
- the L4 is the first TTI length in units of symbols
- the k is a pre-agreed or configured positive integer or fraction
- the first TTI length is the second TTI length, or is the maximum or minimum or average value of the second TTI length and the TTI length of the downlink transmission.
- the sending unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission, specifically:
- the sending unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, and the feedback delay configured by the configuration signaling, to determine the downlink transmission ACK/NACK feedback information transmission.
- the location of the uplink time domain resource including:
- the uplink time domain resource location of the information transmission is delayed, and the delayed uplink time domain resource location is finally determined as the uplink time domain resource location of the downlink transmitted ACK/NACK feedback information transmission.
- the configuration signaling is a high layer signaling, or the configuration signaling is carried in a first physical downlink control channel corresponding to the downlink transmission;
- the configuration signaling is for downlink transmissions using different TTI lengths, and the configured second TTI lengths are the same or different.
- the configuring the signaling to configure the second TTI length includes:
- the configuration signaling indicates that one of the set of TTI lengths of the uplink time domain resource location used for determining the downlink ACK/NACK feedback information transmission, which is pre-agreed or configured, is the second TTI length;
- the configuration signaling indicates an offset value of the second TTI length relative to a TTI length of the downlink transmission.
- the uplink time domain resource that can be used for ACK/NACK transmission includes:
- the number of consecutive symbols for uplink transmission is not less than a preset number of subframes
- a symbol/B TTIs in all or part of the uplink subframe where A is a number of symbols required for transmission of the ACK/NACK feedback information, and the A is a positive integer, the B Transmitting the number of TTIs required for the ACK/NACK feedback information, where B is a positive integer;
- a symbols/B TTIs in a subframe including symbols for uplink transmission
- all or part of the number of consecutive symbols for uplink transmission is not less than a number of A symbols/B TTIs in a preset number of subframes.
- the sending unit determines that the ACK/NACK feedback information of the downlink transmission is sent in the same uplink time domain resource location, the sending unit specifically includes:
- the downlink transmission is a first physical downlink control channel indicating that the downlink SPS resource is released, or is a first physical downlink shared channel with a corresponding first physical downlink control channel, or is a first physical downlink without corresponding The first physical downlink shared channel of the control channel.
- the second TTI length is a basic short TTI unit, where the basic short TTI unit is a basic unit of time domain transmission; or the second TTI length is one of multiple TTI lengths supported by the system.
- the device for receiving feedback information includes:
- a sending unit configured to send a downlink transmission
- a receiving unit configured to determine, according to the downlink TTI length and/or the second TTI length, the uplink time domain resource location of the downlink transmission ACK/NACK feedback information, and when the uplink is The domain resource location receives the ACK/NACK feedback information of the downlink transmission, where the second TTI length is a TTI length of an uplink time domain resource location used for determining ACK/NACK feedback information transmission configured or pre-agreed by the configuration signaling.
- the receiving unit determines, according to the TTI length of the downlink transmission, an uplink time domain resource location of the downlink transmitted ACK/NACK feedback information, and receives the downlink transmission at the uplink time domain resource location.
- ACK/NACK feedback information including:
- TTI numbering on the TTI length of the downlink transmission, and determining to receive the ACK/NACK feedback of the downlink transmission in an uplink time domain resource that is available for ACK/NACK transmission after the TTI numbered n+k Information, wherein the TTI number of the downlink transmission is n;
- the L1 is a length of the downlink transmitted TTI in units of time
- the L2 is a length of the downlink transmitted TTI in units of symbols, where k is a pre-agreed or configured positive integer or Decimal.
- the receiving unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission, and is in the uplink Receiving, by the time domain resource location, the ACK/NACK feedback information of the downlink transmission, specifically:
- a time length not earlier than L3*k or a first one of L4*k symbols may be used for ACK/NACK transmission Receiving the downlink transmission ACK/NACK feedback information in the uplink time domain resource;
- determining that a time length of not less than L3*k or a first one of L4*k symbols is separated from an end time position or an end symbol position of the downlink transmission determined according to the first TTI length may be used for ACK/NACK transmission Receiving the downlink transmission ACK/NACK feedback information in the uplink time domain resource;
- determining to receive in an uplink time domain resource that is not less than L3*k or an uplink time domain resource that is available for ACK/NACK transmission of L4*k symbols with an end time position or an end symbol position of the downlink transmission not less than L3*k The ACK/NACK feedback information of the downlink transmission;
- the L3 is the first TTI length in units of time
- the L4 is the first TTI length in units of symbols
- the k is a pre-agreed or configured positive integer or fraction
- the first TTI length is the second TTI length, or is the maximum or minimum or average value of the second TTI length and the TTI length of the downlink transmission.
- the receiving unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission, specifically:
- the receiving unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, and the feedback delay configured by the configuration signaling, to determine the downlink transmission ACK/NACK feedback information transmission.
- Upstream time domain Source location including:
- the configuration signaling is a high layer signaling, or the configuration signaling is carried in a first physical downlink control channel corresponding to the downlink transmission;
- the configuration signaling is for downlink transmissions using different TTI lengths, and the configured second TTI lengths are the same or different.
- the configuring the signaling to configure the second TTI length includes:
- the configuration signaling indicates that one of the set of TTI lengths of the uplink time domain resource location used for determining the downlink ACK/NACK feedback information transmission, which is pre-agreed or configured, is the second TTI length;
- the configuration signaling indicates an offset value of the second TTI length relative to a TTI length of the downlink transmission.
- the uplink time domain resource that can be used for ACK/NACK transmission includes:
- the number of consecutive symbols for uplink transmission is not less than a preset number of subframes
- a symbol/B TTIs in all or part of the uplink subframe where A is a number of symbols required for transmission of the ACK/NACK feedback information, and the A is a positive integer, the B Transmitting the number of TTIs required for the ACK/NACK feedback information, where B is a positive integer;
- a symbols/B TTIs in a subframe including symbols for uplink transmission
- all or part of the number of consecutive symbols for uplink transmission is not less than a number of A symbols/B TTIs in a preset number of subframes.
- the receiving unit determines that the ACK/NACK feedback information of the multiple downlink transmissions is on the same one
- the time domain resource location it specifically includes:
- the downlink transmission is a first physical downlink control channel indicating that the downlink SPS resource is released, or is a first physical downlink shared channel with a corresponding first physical downlink control channel, or is a first physical downlink without corresponding The first physical downlink shared channel of the control channel.
- the second TTI length is a basic short TTI unit, where the basic short TTI unit is a basic unit of time domain transmission; or the second TTI length is one of multiple TTI lengths supported by the system.
- an apparatus in a fifth aspect, includes: a processor, a transceiver, and a memory; and the processor is configured to read a program in the memory, and perform any one of the foregoing first aspects. Methods.
- the embodiment of the present application further provides an apparatus, including: a processor, a transceiver, and a memory, where the processor is configured to read a program in the memory, and perform any one of the foregoing second aspects.
- FIG. 1 is a schematic flowchart of a method for sending feedback information according to an embodiment of the present application
- FIG. 2 is a schematic flowchart of a method for receiving feedback information according to an embodiment of the present application
- FIG. 3 is a schematic diagram of feedback timing of feedback information according to an embodiment of the present application.
- FIG. 4 is a schematic timing diagram of feedback of a second type of feedback information provided by an embodiment of the present application.
- FIG. 5 is a schematic diagram of feedback timing of a third type of feedback information provided by an embodiment of the present application.
- FIG. 6 is a schematic timing diagram of feedback of a fourth type of feedback information according to an embodiment of the present disclosure.
- FIG. 7 is a schematic timing diagram of feedback of a fifth type of feedback information according to an embodiment of the present disclosure.
- FIG. 8 is a schematic structural diagram of a device for sending feedback information according to an embodiment of the present disclosure.
- FIG. 9 is a schematic structural diagram of a device for receiving feedback information according to an embodiment of the present disclosure.
- FIG. 10 is a schematic structural diagram of another apparatus for sending feedback information according to an embodiment of the present disclosure.
- FIG. 11 is a schematic structural diagram of another apparatus for receiving feedback information according to an embodiment of the present disclosure.
- the embodiment of the present application provides a method and a device for transmitting feedback information, which are used to define a new feedback timing when using downlink dynamically variable TTI length transmission to determine that ACK/NACK feedback information of one downlink data is satisfied. Feedback is made on the earliest uplink transmission resources of the delay, thereby reducing system delay.
- a method for sending feedback information is provided by an embodiment of the present application.
- the method is performed on a terminal (User Equipment, UE) side, and the method may include:
- S102 Determine an uplink time domain resource location of the downlink transmitted ACK/NACK feedback information transmission according to the TTI length of the downlink transmission and/or the second TTI length, and send the uplink time domain resource location in the uplink time domain resource location.
- the configuration signaling is high layer signaling, or the configuration signaling is carried in a first physical downlink control channel corresponding to the downlink transmission; and/or, the configuration signaling is used to use different TTIs.
- the downlink transmission of the length, the configured TTI length of the uplink time domain resource location used for determining the ACK/NACK feedback information transmission is the same or different.
- the configuration signaling is configured to determine a TTI length of an uplink time domain resource location of the ACK/NACK feedback information transmission, and the method includes: the configuration signaling indication pre-agreed or configured to determine the downlink transmission.
- One of the TTI length sets of the uplink time domain resource locations of the ACK/NACK feedback information transmission is the second TTI length; or the configuration signaling indicates that the second TTI length is relative to the downlink transmission The offset value of the TTI length.
- the downlink transmission is a first physical downlink control channel indicating that the downlink SPS resource is released, or is a first physical downlink shared channel with a corresponding first physical downlink control channel (ie, dynamically scheduling the first physical downlink sharing) a first physical downlink shared channel (ie, an SPS first physical downlink shared channel) having no corresponding first physical downlink control channel; wherein the first physical downlink control channel and/or the first physic
- the TTI length of the downlink shared channel is equal to or less than 1 ms, and of course the length thereof may not exceed 1 ms.
- the UE may dynamically determine the time domain location (instant domain resource) of the ACK/NACK feedback according to the DL TTI length: the earliest UL TTI that satisfies the DL TTI length *3 at the end position of one DL TTI In transit.
- the length of the TTI of the downlink transmission is specifically expressed as L1 milliseconds (ms) or L2 symbols, where L1 is a small value of 1 ms or shorter than 1 ms, and L2 is a value of 14 or less under the conventional CP, and is an extended CP. 12 or a value less than 12; of course, L1 can also be a fractional or integer value longer than 1ms, and L2 can also be greater than that under normal CP. The value of 14 is greater than 12 under extended CP.
- Method 1 determining, according to the TTI length of the downlink transmission, the uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission, specifically:
- the TTI number is performed with the TTI length of the downlink transmission, and if the TTI number of the downlink transmission is n, the first uplink time domain available for ACK/NACK transmission after the TTI numbered n+k is determined. Transmitting the ACK/NACK feedback information of the downlink transmission in the resource;
- a time length of not less than L1*k or L2*k symbols ie, the interval does not include the ACK/NACK transmission location itself does not include the The last symbol of the downlink transmission, taking symbol 1 as an example, after the symbol position is separated by 1 symbol, that is, the first uplink time domain resource of the symbol 3) that can be used for ACK/NACK transmission transmits the downlink transmission.
- ACK/NACK feedback information ie, the interval does not include the ACK/NACK transmission location itself does not include the The last symbol of the downlink transmission, taking symbol 1 as an example, after the symbol position is separated by 1 symbol, that is, the first uplink time domain resource of the symbol 3
- the L1 is a length of the TTI of the downlink transmission in units of time
- the L2 is a length of the TTI of the downlink transmission in units of symbols
- the k is a pre-agreed or configured Positive integer or decimal.
- Method 2 determining an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission according to the second TTI length; or method 3: determining, according to the TTI length of the downlink transmission and the second TTI length
- the uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission includes:
- Determining an end time position or an end symbol position of the downlink transmission determined according to the first TTI length (ie, ending position determined according to the first TTI length starting from the start symbol of the downlink transmission, the location may be After the end position of the TTI length of the actual scheduled downlink transmission is determined to be lower, the same as below, the first uplink time domain resource that can be used for ACK/NACK transmission after the time length of L3*k or after L4*k symbols is satisfied. Transmitting the ACK/NACK feedback information of the downlink transmission;
- the ACK/NACK feedback information of the downlink transmission is transmitted not earlier than the time length of L3*k or the first uplink time domain resource of the L4*k symbols available for ACK/NACK transmission;
- the TTI number is performed with the first TTI length, and if the TTI number of the downlink transmission is n, the first uplink time domain resource that can be used for ACK/NACK transmission after the TTI numbered n+k is determined. Transmitting the ACK/NACK feedback information of the downlink transmission;
- the location itself does not include the last symbol of the downlink transmission.
- symbol 1 the symbol is separated by 1 symbol, that is, the first uplink time domain resource of the symbol 3) that can be used for ACK/NACK transmission. Transmitting the ACK/NACK feedback information of the downlink transmission;
- the first uplink time domain resource available for ACK/NACK transmission after the time length of L3*k or after L4*k symbols The ACK/NACK feedback information of the downlink transmission
- the first TTI length is the second TTI length (corresponding to the second method), or the first TTI length is the maximum value of the second TTI length and the downlink transmission TTI length (corresponding to the third method) ) or minimum or average.
- the length of the TTI configured by the configuration signaling is L3 milliseconds (ms) or L4 symbols, L3 is a small value of 1 ms or shorter than 1 ms, and L4 is the number of symbols configured by the configuration signaling, and L4 is The value of 14 or less under the conventional CP is 12 or less than 12 under the extended CP; of course, L3 can also be a fractional or integer value longer than 1 ms, and L4 can also be a value greater than 14 under the conventional CP. Extend the value of greater than 12 under CP.
- the configuration signaling is high layer signaling, such as radio resource control (RRC) signaling, media access control (MAC) signaling, and master information block (MIB) signaling.
- RRC radio resource control
- MAC media access control
- MIB master information block
- SIB system information BS
- SIB system information BS
- the second TTI length configured by the configuration signaling when the downlink data is transmitted by using different TTI lengths may be the same or different; for example, for the TTI length of the data transmission being a1, the second TTI length is configured as b1, The length of the TTI of the data transmission is a2, and the length of the second TTI is b2, where a1 and a2 may be a TTI length or a TTI length set, that is, when a1 includes 2 or more TTI lengths, the TTI included in a1
- the length of data transmission is determined by the TTI length of b1 to determine the uplink time domain resource location of its ACK/NACK feedback information transmission.
- the configuration signaling may directly indicate a second TTI length, where the TTI length is a value in a predefined set, and the correspondence between the second TTI length and the indication domain state of the configuration signaling is pre-agreed or configured; Or the configuration signaling indicates an offset value of the second TTI length relative to the TTI length of the downlink transmission, and the correspondence between the offset value and the indication domain state of the configuration signaling is pre-arranged or configured.
- the offset value When the offset value is 0, it indicates that the uplink time domain resource position of the downlink transmission ACK/NACK feedback information transmission is determined according to the TTI length of the downlink transmission, and when the offset value is not 0, according to the downlink
- the TTI length of the transmission and the offset value determine a TTI length actually used to determine the ACK/NACK time domain location, such as the sum of the TTI length of the downlink transmission and the offset value, or the offset value
- the product is actually used to determine the TTI length of the ACK/NACK time domain location; of course, other states of the configuration signaling may also be used to indicate that the downlink transmission ACK/NACK is determined according to the TTI length of the downlink transmission.
- the uplink time domain resource location of the feed information transmission, and the remaining state or part of the state of the remaining state is used to indicate the actual offset value.
- Method 4 determining the downlink transmission according to the TTI length of the downlink transmission and/or the second TTI length, and the feedback delay indication field configured by the configuration signaling, in the process of determining the feedback timing of the feedback information.
- the method 4 includes: determining, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission (this step may reuse the foregoing method 1) , two, three).
- the method four specifically includes:
- One state of the feedback delay indication field indicates “determining an uplink time domain resource location of the downlink transmitted ACK/NACK feedback information transmission according to the TTI length of the downlink transmission or according to the second TTI length”, the feedback
- the remaining states of the delay indication field or the partial states of the remaining states respectively represent "transmission of ACK/NACK feedback information of the downlink transmission determined according to the TTI length of the downlink transmission and/or according to the second TTI length, respectively.
- Uplink time domain resource location performing delay of different lengths to obtain an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission; wherein the delayed granularity may be occupied by an ACK/NACK transmission time domain
- the length of the resource is in units.
- the delay indication field may indicate that the S1 symbols or integer multiples of S1 are not delayed or delayed, or may indicate a delay of S2 TTIs or An integer multiple of T2 of S2; can also be defined in units of time domain resources available for ACK/NACK transmission defined in the system, for example, 5 in a radio frame ACK / NACK time domain resource location, the delay indication field indicates that no delay may be delayed for 3, 4 or ACK / NACK resources in time domain.
- the uplink time domain resource that can be used for ACK/NACK transmission is specifically:
- All or part of the symbols are used as symbols/TTIs for uplink transmission in the uplink transmission subframe; taking symbols as an example, for example, the above determination may be made for any one of the symbols used for uplink transmission in one subframe, if If the symbol satisfies the above condition, the ACK/NACK is transmitted starting from the symbol, and the ACK/NACK may occupy only the symbol transmission or the consecutive A symbol transmissions starting from the symbol.
- the symbol starts in the subframe where the symbol is located, If there are consecutive A symbols, the actual number of consecutive uplink symbols starting with the symbol is transmitted, or the agreement is only transmitted on the symbol; if the uplink time domain resource exists, the ACK/NACK feedback is performed as early as possible to reduce the delay; Taking TTI as an example is similar to the above, and will not be described again.
- a symbol/TTI for uplink transmission (that is, there may be no subframe boundary limitation at this time); taking a symbol as an example, for example, the foregoing determination may be made for any symbol used as an uplink transmission, if the symbol satisfies the above Condition, the ACK/NACK is transmitted starting from the symbol, and the ACK/NACK may occupy only the symbol transmission or the consecutive A symbol transmissions starting from the symbol. If there is no consecutive A symbols starting with the symbol, the symbol is used. The actual continuous uplink symbol number transmission starts, or the convention is only transmitted on the symbol; if the uplink time domain resource exists, the ACK/NACK feedback is performed as early as possible, and the delay is reduced.
- the symbol that satisfies the condition is at the end of the subframe, And in the sub-frame If there is no consecutive A symbols, but at least the first part of the symbols of the next subframe is also uplink, the symbol can be used as a starting point to occupy consecutive A symbol transmissions spanning two subframes; in the case of TTI, similar to the above, No longer.
- all or part of the symbols are used as part of the symbol/TTI for uplink transmission in the subframe of the uplink transmission; taking the symbol as an example, for example, the former B in the symbol for uplink transmission in the subframe a symbol or a last B symbols, B is a pre-agreed or configured positive integer greater than 0, and may be determined for a symbol of a specific position in the subframe, for example, in a symbol for uplink transmission in the subframe.
- the first symbol or the last B symbol if the symbol satisfies the above condition, the ACK/NACK is transmitted starting from the symbol, and the ACK/NACK may occupy only the symbol transmission or the continuous B symbol transmission starting from the symbol.
- the ACK/NACK is transmitted on the symbol, and the ACK/NACK may only The symbol transmission is occupied; when the TTI is taken as an example, it is similar to the above, and will not be described again.
- the first A symbols in the consecutive N symbols used for the uplink transmission are subjected to the above judgment (ie, it is judged whether the first symbol satisfies the above condition, and if satisfied, the first A symbols are satisfied), and if the above condition is satisfied,
- the first one of the consecutive N symbols is a starting point for transmitting ACK/NACK, and the ACK/NACK occupies A consecutive symbol transmission; for another example, for the last N symbols used as uplink transmission in the subframe
- a symbol is used for the above judgment (ie, it is judged whether the last A-th symbol of the N consecutive symbols satisfies the above condition, and if it is satisfied, the latter A symbols are satisfied), and if the above condition is satisfied, the consecutive N
- the last A symbol in the symbol is the ACK/NACK for
- Each symbol in The above judgment is made (ie, it is judged whether the current symbol satisfies the above condition, and if it is satisfied, the A consecutive symbols starting from the symbol are satisfied), if the above condition is satisfied, the ACK/NACK is transmitted starting from the symbol, and the ACK/NACK occupies A.
- Continuous symbol transmission for example, the above determination may be made for each of the last NA symbols in the consecutive N symbols used for the uplink transmission in the subframe (ie, determining whether the current symbol satisfies the above condition, if satisfied Then, the consecutive symbols of the symbol are satisfied.
- the ACK/NACK is transmitted starting from the symbol, and the ACK/NACK occupies A consecutive symbol transmission; when the TTI is taken as an example, similar to the above, Further, when determining the uplink time domain resource location of the ACK/NACK feedback information transmission of the downlink transmission by using the above methods 1-4, if it is determined that the ACK/NACK feedback information of multiple downlink transmissions is transmitted in the same uplink time domain resource location, Then: according to the DAI indication field in the DCI used by the first physical downlink control channel corresponding to the multiple downlink transmissions, the ACK/NAC corresponding to the multiple downlink transmissions respectively
- the K feedback information is cascaded together and transmitted simultaneously after joint coding; wherein DAI is used as a counter, which can be used to indicate that the current downlink transmission is in the same
- the DAI value it can be determined whether there is downlink transmission loss in the intermediate position, for example, the DAI of the first downlink transmission is 1 and the DAI of the second downlink transmission is 3, indicating that the first and second are received.
- a downlink transmission is lost between the downlink transmissions, and a NACK can be generated as feedback information for the lost downlink transmission, and the DAI value can be inferred to be 2, so that the ACK/NACK of the three downlink transmissions are ranked according to the DAI value.
- sorting cascades are performed in ascending order of DAI.
- the total number of the DAI indications may not include the SPS first physical downlink shared channel, or the total number only includes the first physical downlink control channel indicating the release of the downlink SPS resource and the first physical medium having the corresponding first physical downlink control channel.
- the number of downlink shared channels may not include the SPS first physical downlink shared channel, or the total number only includes the first physical downlink control channel indicating the release of the downlink SPS resource and the first physical medium having the corresponding first physical downlink control channel.
- the SPS first physical downlink shared channel that is, the first physical downlink shared channel that does not correspond to the first physical downlink control channel
- the foregoing method 2, 3, and 4 are used, and the configuration signaling is through the first physical downlink
- the time domain location of the ACK/NACK feedback is always determined according to the related information configured by the indication field in the first physical downlink control channel of the SPS first physical downlink shared channel. If ACK/NACK of multiple downlink transmissions needs to be cascaded, the ACK/NACK of the SPS first physical downlink shared channel may stipulate that the cascading is at the beginning or the last position of the sequence.
- the ACK/NACK feedback information is transmitted through a PUCCH or a PUSCH structure.
- the PUCCH structure can reuse the mapping and spreading mode of the PUCCH format 4/5, and only changes the time domain transmission length and/or the frequency domain resource size; of course, other PUCCH format structures can also be used.
- the second TTI length is a basic short TTI unit, where the basic short TTI unit is a basic unit of time domain transmission; or the second TTI length is a plurality of TTI lengths supported by the system. one of.
- a method for receiving feedback information provided by the embodiment of the present application includes:
- S202 Determine, according to the downlink TTI length and/or the second TTI length, the uplink time domain resource location of the downlink transmission ACK/NACK feedback information, and receive the uplink time domain resource location at the uplink time domain resource location.
- the configuration signaling is high layer signaling, or the configuration signaling is carried in a first physical downlink control channel corresponding to the downlink transmission; and/or, the configuration signaling is different for use.
- Downlink transmission of TTI length The configured second TTI lengths are the same or different.
- the configuring the signaling to configure the second TTI length specifically includes: the configuration signaling indicating a pre-agreed or configured uplink time domain resource location for determining the downlink transmission ACK/NACK feedback information transmission.
- One of the TTI length sets is the second TTI length; or the configuration signaling indicates an offset value of the second TTI length relative to a TTI length of the downlink transmission.
- the downlink transmission is a first physical downlink control channel indicating that the downlink SPS resource is released, or is a first physical downlink shared channel with a corresponding first physical downlink control channel, or is a first physical downlink without corresponding The first physical downlink shared channel of the control channel; wherein the TTI length of the first physical downlink control channel and/or the first physical downlink shared channel is equal to or less than 1 ms, and of course, the length may also exceed 1 ms.
- the second TTI length is a basic short TTI unit, where the basic short TTI unit is a basic unit of time domain transmission; or the second TTI length is a plurality of TTI lengths supported by the system. one of.
- the length of the TTI of the first downlink data transmission is 1 symbol, occupying the 3rd symbol transmission in the subframe #i, and according to the delay requirement of 1*3, the 4th symbol which can be the earliest after the symbol (or The ACK/NACK feedback is performed on the symbol with the symbol separated by not less than 3 symbols, that is, the 7th symbol (upstream) in the subframe is transmitted.
- the TTI length of the second downlink data transmission is 1 symbol, occupying the 4th symbol transmission in the subframe #i, and according to the delay requirement of 1*3, the 4th symbol that can be the earliest after the symbol (or
- the ACK/NACK feedback is performed on the symbol with the symbol separated by not less than 3 symbols, that is, the 8th symbol (upstream) in the subframe is transmitted.
- the length of the TTI of the third downlink data transmission is 2 symbols, occupying the 5th and 6th symbol transmissions in the subframe #i, according to the delay requirement of 2*3, the earliest possible after the last symbol occupied by the second symbol
- the ACK/NACK feedback is performed on the 7th symbol (or a symbol separated by not less than 6 symbols from the last symbol), that is, the 13th symbol (upstream) in the subframe is transmitted.
- the 4th downlink data transmission has a TTI length of 4 symbols, and occupies the 7th to 10th symbol transmission in the subframe #i. According to the 4*3 delay requirement, it may be the earliest after the last symbol it occupies.
- the 13th symbol (or a symbol separated from the last symbol by not less than 12 symbols) performs ACK/NACK feedback, that is, transmission on the ninth symbol (upstream) in subframe #i+1.
- the length of the TTI of the fifth downlink data transmission is 4 symbols, and the 11th to 14th symbols in the subframe #i are transmitted. According to the delay requirement of 4*3, the earliest possible delay may be after the last symbol occupied by the subframe.
- the ACK/NACK feedback is performed on the 13th symbol (or a symbol separated by not less than 12 symbols from the last symbol), that is, the number in subframe #i+1 Transfer on 13 symbols (upstream).
- the 6th downlink data transmission has a TTI length of 5 symbols, and occupies the 2nd to 6th symbol transmission in the subframe #i+1. According to the 5*3 delay requirement, the last symbol that can be occupied at the earliest can be used. The subsequent 16th symbol (or a symbol separated by no less than 15 symbols from the last symbol) is subjected to ACK/NACK feedback, that is, transmission on the ninth symbol (upstream) in subframe #i+2.
- the length of the TTI of the seventh downlink data transmission is 7 symbols, and the 7th to 14th symbols in the subframe #i+1 are occupied. According to the delay requirement of 7*3, the last symbol that can be occupied at the earliest can be used.
- the subsequent 22nd symbol (or a symbol separated by not less than 21 symbols from the last symbol) is subjected to ACK/NACK feedback, that is, transmission on the 8th symbol (upstream) in subframe #i+3.
- each symbol in each uplink subframe of the FDD can be used to transmit ACK/NACK. If the ACK/NACK is further restricted, only the partial symbols in each uplink subframe can be transmitted, for example, the last.
- Feedback is performed on the last symbol in frame #i+2; for the seventh downlink transmission, the feedback is delayed to the last symbol in subframe #i+3;
- the ACK/NACK feedback delay of the downlink transmission is at the cost, reducing the overhead of the uplink transmission ACK/NACK, and placing multiple downlink transmission ACK/NACKs in the same uplink transmission for feedback; such a method is also included in the scope of the present application.
- you can also restrict only partial sub-frames Some of the symbols in the position of the subframe can be used for ACK / NACK transmission; omitted in a similar manner.
- the length of the TTI of the first downlink data transmission is 12 symbols, occupying the 3rd to 14th symbol transmission in the subframe #9, according to the delay requirement of 12*3, the earliest possible after the last symbol occupied by the first symbol
- the ACK/NACK feedback is performed on the 37th symbol (or a symbol separated by not less than 36 symbols from the last symbol), and the position is an uplink symbol, that is, the ninth in the subframe #2 in the next radio frame. Transfer on the symbol.
- the second downlink data transmission has a TTI length of 4 symbols, and occupies the 3rd to 6th symbol transmission in the subframe #0. According to the 4*3 delay requirement, the earliest can be after the last symbol occupied by the second symbol.
- the length of the TTI of the third downlink data transmission is 4 symbols, and the 7th to 10th symbols in the subframe #0 are transmitted. According to the delay requirement of 4*3, the earliest possible symbol can be used after the last symbol occupied by the frame.
- the ACK/NACK feedback is performed on the 13th symbol (or a symbol separated by not less than 12 symbols from the last symbol). Since the symbol at this position is not uplink, it is extended to the nearest uplink symbol position, that is, Transmitted on the 13th symbol in subframe #1.
- the length of the TTI of the fourth downlink data transmission is 4 symbols, and the 11th to 14th symbols in the subframe #0 are transmitted. According to the delay requirement of 4*3, the earliest possible symbol can be used after the last symbol occupied by the frame.
- the ACK/NACK feedback is performed on the 13th symbol (or a symbol separated by not less than 12 symbols from the last symbol), and the position is transmitted on the 13th symbol in the subframe #1.
- the length of the TTI of the fifth downlink data transmission is 1 symbol, occupying the third symbol transmission in subframe #1, and according to the delay requirement of 1*3, the 4th symbol that can be the earliest after the symbol (or The ACK/NACK feedback is performed on the symbol with the symbol not less than 3 symbols. Since the symbol at this position is not the uplink, it is extended to the nearest uplink symbol position, that is, the 13th in the subframe #1. Transfer on the symbol.
- the 6th downlink data transmission has a TTI length of 1 symbol, and occupies the 4th symbol transmission in subframe #1. According to the delay requirement of 1*3, the 4th symbol that can be the earliest after the symbol (or The ACK/NACK feedback is performed on the symbol with the symbol not less than 3 symbols. Since the symbol at this position is not the uplink, it is extended to the nearest uplink symbol position, that is, the 13th in the subframe #1. Transfer on the symbol.
- the length of the TTI of the seventh downlink data transmission is 6 symbols, occupying the 5th to 10th symbol transmission in the subframe #1, and according to the delay requirement of 6*3, the earliest can be after the last symbol occupied by the first symbol.
- the 19th symbol (or a symbol separated from the last symbol by not less than 18 symbols) performs ACK/NACK feedback, which is the uplink symbol, that is, the first symbol in subframe #3 is transmitted.
- the length of the TTI of the first downlink data transmission is 12 symbols, occupying the 3rd to 14th symbol transmission in the subframe #9, according to the delay requirement of 12*3, the earliest possible after the last symbol occupied by the first symbol
- the ACK/NACK feedback is performed on the 37th symbol (or a symbol separated by not less than 36 symbols from the last symbol). Although the position is an uplink symbol but is not a specified symbol capable of transmitting ACK/NACK, it is delayed. Up to the last upstream symbol position available for ACK/NACK feedback, that is, the last symbol in subframe #2 in the next radio frame.
- the second downlink data transmission has a TTI length of 4 symbols, and occupies the 3rd to 6th symbol transmission in the subframe #0. According to the 4*3 delay requirement, the earliest can be after the last symbol occupied by the second symbol.
- the ACK/NACK feedback is performed on the 13th symbol (or the symbol with the last symbol separated by not less than 12 symbols). Since the symbol at this position is not uplink, it is extended to the nearest one for ACK/NACK.
- the upstream symbol position of the feedback that is, the last symbol in subframe #2 is transmitted.
- the length of the TTI of the third downlink data transmission is 4 symbols, and the 7th to 10th symbols in the subframe #0 are transmitted. According to the delay requirement of 4*3, the earliest possible symbol can be used after the last symbol occupied by the frame.
- the ACK/NACK feedback is performed on the 13th symbol (or the symbol with the last symbol separated by not less than 12 symbols). Since the symbol at this position is not uplink, it is extended to the nearest one for ACK/NACK.
- the upstream symbol position of the feedback that is, the last symbol in subframe #2 is transmitted.
- the length of the TTI of the fourth downlink data transmission is 4 symbols, and the 11th to 14th symbols in the subframe #0 are transmitted. According to the delay requirement of 4*3, the earliest possible symbol can be used after the last symbol occupied by the frame.
- the ACK/NACK feedback is performed on the 13th symbol (or a symbol separated by not less than 12 symbols from the last symbol). Although the position is an uplink symbol but is not a specified symbol capable of transmitting ACK/NACK, it is delayed. Up to the last upstream symbol position available for ACK/NACK feedback, ie the last symbol in subframe #2.
- the length of the TTI of the fifth downlink data transmission is 1 symbol, occupying the third symbol transmission in subframe #1, and according to the delay requirement of 1*3, the 4th symbol that can be the earliest after the symbol (or ACK/NACK feedback is performed on the symbol with the symbol separated by not less than 3 symbols. Since the symbol at this position is not uplink, it is extended to the latest uplink symbol position available for ACK/NACK feedback, that is, Transfer on the last symbol in frame #2.
- the 6th downlink data transmission has a TTI length of 1 symbol, and occupies the 4th symbol transmission in subframe #1. According to the delay requirement of 1*3, the 4th symbol that can be the earliest after the symbol (or ACK/NACK feedback is performed on the symbol with the symbol separated by not less than 3 symbols. Since the symbol at this position is not uplink, it is extended to the latest uplink symbol position available for ACK/NACK feedback, that is, Transfer on the last symbol in frame #2.
- the length of the TTI of the seventh downlink data transmission is 6 symbols, occupying the 5th to 10th symbol transmission in the subframe #1, and according to the delay requirement of 6*3, the earliest can be after the last symbol occupied by the first symbol.
- ACK/NACK feedback is performed on the 19th symbol (or a symbol separated by not less than 18 symbols from the last symbol). Although the position is an uplink symbol but is not a specified symbol capable of transmitting ACK/NACK, it is delayed. Up to the last upstream symbol position available for ACK/NACK feedback, ie the last symbol in subframe #3.
- the RRC letter Let the offset value relative to the scheduled TTI length be also configured to determine the TTI length for determining the time domain location of the ACK/NACK feedback, similar to Table 4 below, and the other way is for each downlink transmission.
- the first bit field in the DCI of the corresponding control channel indicates a TTI length for determining the ACK/NACK feedback time domain location of the downlink transmission, then:
- the TTI length of the first downlink data transmission is 8 symbols, and the 3rd to 10th symbol transmission in the subframe #0 is occupied. If the TTI length of the RRC configuration is 8 symbols to determine the feedback position, the 8*3 is followed.
- the delay requirement is that ACK/NACK feedback can be performed on the 25th symbol (or the symbol with at least 24 symbols separated from the last symbol) after the last symbol it occupies, which is the uplink symbol. However, it is not a specified symbol that can transmit ACK/NACK, so it is extended to the last uplink symbol position available for ACK/NACK feedback, that is, the last symbol in subframe #2 in the current radio frame; If the first indication field in the DCI corresponding to the downlink transmission is determined, the first indication domain is obtained.
- the indication relationship of the first indication domain is as shown in Table 3.
- the first downlink data transmission corresponds to The first indication field in the DCI is “110”, indicating that the feedback position is determined according to the TTI length of 8 symbols, and the determination result is the same as the delay requirement according to the 8*3 delay requirement; or the indication relationship of the first indication domain is as shown in Table 4.
- the first The first indication field in the DCI corresponding to the downlink data transmission is “00”, indicating that the feedback position is determined according to the actual scheduled TTI length of 8 symbols, and the determination result is the same as above according to the delay requirement of 8*3; Table 3 and Table 4, other corresponding manners, such as changing the value indicated in the table, changing the unit of the indication value, changing the number of bits of the first indication field in the table, exchanging the status of each first indication field in the table and indicating Corresponding relationship of values is within the scope of the present invention)
- Table 3 Correspondence between the first indication field in the DCI and the length of the TTI used to determine the ACK/NACK feedback position:
- Table 4 Correspondence between the first indication field in the DCI and the offset value of the TTI length for determining the ACK/NACK feedback position with respect to the TTI length of the downlink transmission
- the TTI length of the second downlink data transmission is 4 symbols, and the 11th to 14th symbols in the subframe #0 are occupied. If the TTI length of the RRC configuration is 8 symbols to determine the feedback position, the 8*3 is followed.
- the delay requirement is that ACK/NACK feedback can be performed on the 25th symbol (or the symbol with at least 24 symbols separated from the last symbol) after the last symbol it occupies, which is the uplink symbol.
- the first indication field in the DCI corresponding to the downlink transmission is determined, the first indication field is obtained, for example, “110”, and according to the correspondence relationship of Table 3, the feedback position is determined according to the TTI length of 8 symbols, for example, The first indication field is “10”. According to the correspondence relationship of Table 4, it is indicated that the feedback position is determined according to the TTI length obtained by shifting or increasing 4 symbols with respect to the TTI length of the downlink transmission, and the feedback position is determined according to 8*. 3 Delay requirements, determine the results above.
- the TTI length of the third downlink data transmission is 2 symbols, occupying the 3rd to 4th symbol transmission in the subframe #1, and if the feedback position is determined according to the RRC configured TTI length of 8 symbols, according to 8*3
- the delay requirement is that ACK/NACK feedback can be performed on the 25th symbol (or the symbol with at least 24 symbols separated from the last symbol) after the last symbol it occupies, which is the uplink symbol.
- the first indication field in the DCI corresponding to the downlink transmission is determined, the first indication field is obtained, for example, “100”, and according to the correspondence relationship of Table 3, the feedback position is determined according to the length of the TTI by 6 symbols, for example, The first indication field is “10”, and according to the correspondence relationship of Table 4, the TTI length obtained by shifting or adding 4 symbols with respect to the TTI length of the downlink transmission, that is, the TTI length is 6 symbols to determine the feedback position, according to the 6*3 delay requirement, the 19th symbol that can be the earliest after the last symbol it occupies (or the symbol with no less than 18 symbols from the last symbol) The ACK/NACK feedback is performed.
- the position is an uplink symbol but is not a specified symbol that can transmit ACK/NACK, it is later extended to the last
- the TTI length of the fourth downlink data transmission is 6 symbols, occupying the 5th to 10th symbol transmission in the subframe #1. If the TTI length of the RRC configuration is 8 symbols to determine the feedback position, the 8*3 is followed.
- the delay requirement is that ACK/NACK feedback can be performed on the 25th symbol (or the symbol with at least 24 symbols separated from the last symbol) after the last symbol it occupies, which is the uplink symbol.
- the first indication field in the DCI corresponding to the downlink transmission is determined, the first indication field is obtained, for example, “100”, and according to the correspondence relationship of Table 3, the feedback position is determined according to the length of the TTI by 6 symbols, for example, The first indication field is “00”. According to the correspondence relationship of Table 4, it indicates that the feedback position is determined according to the actual scheduled TTI length of 6 symbols, and the last symbol that can be occupied at the earliest according to the 6*3 delay requirement.
- the ninth symbol (or the symbol with no less than 18 symbols from the last symbol) is subjected to ACK/NACK feedback.
- the position is an uplink symbol but is not a specified symbol capable of transmitting ACK/NACK, It is postponed to the last uplink symbol position available for ACK/NACK feedback, that is, the last symbol in subframe #3 in the current radio frame.
- Method 3 the steps are similar to Method 2 in Embodiment 4, except that before determining the time domain location of the ACK/NACK feedback, according to the actually scheduled TTI length and the configured TTI length, Determining the TTI length of the time domain location for determining the ACK/NACK feedback, for example, the maximum value of the two, and then determining the time domain location of the ACK/NACK feedback according to the above steps according to the TTI length, and details are not described herein again.
- the length of the TTI of the first downlink data transmission is 2 symbols, occupying the 3rd to 4th symbol transmission in the subframe #i, according to the delay requirement of 2*3, the earliest possible after the last symbol occupied by the first symbol
- the ACK/NACK feedback is performed on the 7th symbol (or a symbol separated by not less than 6 symbols from the last symbol), that is, the 11th symbol (upstream) in the subframe is transmitted, but the feedback delay in the DCI
- the indication field is "10", indicating that the 2 ACK/NACK feedback resources are delayed backward, and then the transmission is determined on the 13th symbol (upstream) in the subframe.
- the length of the TTI of the second downlink data transmission is 2 symbols, and the 5th to 6th symbols in the subframe #i are transmitted. According to the delay requirement of 2*3, the earliest possible delay may be after the last symbol occupied by the second symbol.
- the ACK/NACK feedback is performed on the 7th symbol (or a symbol separated by not less than 6 symbols from the last symbol), that is, the transmission is performed on the 13th symbol (upstream) in the subframe, and the feedback delay in the DCI
- the indication field is "00", indicating that no delay is required, and then the transmission is determined on the 13th symbol (upstream) in the subframe.
- the length of the TTI of the third downlink data transmission is 4 symbols, and the 7th to 10th symbols in the subframe #i are transmitted. According to the delay requirement of 4*3, the earliest possible delay may be after the last symbol occupied by the frame.
- the ACK/NACK feedback is performed on the 13th symbol (or a symbol separated by not less than 12 symbols from the last symbol), that is, the ninth symbol (upstream) in the subframe #i+1 is transmitted, but in the DCI
- the feedback delay indication field is "11", indicating that the 4 ACK/NACK feedback resources are delayed backward, and then the transmission is determined on the 13th symbol (upstream) in subframe #i+1.
- the 4th downlink data transmission has a TTI length of 4 symbols, and occupies the 11th to 14th symbol transmission in the subframe #i. According to the 4*3 delay requirement, it may be the earliest after the last symbol occupied by it.
- the ACK/NACK feedback is performed on the 13th symbol (or a symbol separated by not less than 12 symbols from the last symbol), that is, the 13th symbol (upstream) in subframe #i+1 is transmitted in the DCI.
- the feedback delay indication field is "00", indicating that no delay is required, and then it is determined to transmit on the 13th symbol (upstream) in subframe #i+1.
- the ACK/NACK feedback transmission takes only one symbol length as an example, and does not exclude more than one symbol transmission when ACK/NACK transmission is performed, for example, 2, 3, 4, 5, 7 or 1 ms (12 or 14 symbols).
- the start symbol position of the ACK/NACK transmission is also determined in the above manner, except that the candidate start symbol position is satisfied by the number of symbols A occupied by the ACK/NACK transmission.
- each carrier can be determined in a similar manner, but for the SCC, the first available one can be found on the carrier that can perform ACK/NACK feedback according to the above delay requirement.
- the uplink transmission resource, and in the fourth method, the method for initially determining the time domain location of the ACK/NACK feedback information transmission may reuse the above methods one, two, and three.
- the configured TTI length is replaced by a pre-agreed TTI length, such as a length of a basic short TTI, such as a short TTI of 1 symbol, or a short TTI of 2 symbols; determining the transmission of ACK/NACK feedback information.
- a pre-agreed TTI length such as a length of a basic short TTI, such as a short TTI of 1 symbol, or a short TTI of 2 symbols; determining the transmission of ACK/NACK feedback information.
- a device for sending feedback information includes:
- the receiving unit 11 is configured to receive a downlink transmission
- the sending unit 12 is configured to determine, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission, and the uplink time domain resource in the uplink time domain resource And transmitting, by the location, the ACK/NACK feedback information of the downlink transmission, where the second TTI length is a TTI length configured by the configuration signaling or pre-agreed for determining an uplink time domain resource location of the ACK/NACK feedback information transmission.
- the sending unit determines, according to the TTI length of the downlink transmission, an uplink time domain resource location of the downlink transmitted ACK/NACK feedback information, and sends the downlink transmission at the uplink time domain resource location.
- ACK/NACK feedback information including:
- the L1 is a length of the downlink transmitted TTI in units of time
- the L2 is a length of the downlink transmitted TTI in units of symbols, where k is a pre-agreed or configured positive integer or Decimal.
- the sending unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission, and in the uplink
- the time domain resource location sends the ACK/NACK feedback information of the downlink transmission, which specifically includes:
- a time length not earlier than L3*k or a first one of L4*k symbols may be used for ACK/NACK transmission Transmitting the ACK/NACK feedback information of the downlink transmission in the uplink time domain resource;
- determining that a time length of not less than L3*k or a first one of L4*k symbols is separated from an end time position or an end symbol position of the downlink transmission determined according to the first TTI length may be used for ACK/NACK transmission Transmitting the ACK/NACK feedback information of the downlink transmission in the uplink time domain resource;
- the first uplink time domain resource available for ACK/NACK transmission after the time length of L3*k or after L4*k symbols The ACK/NACK feedback information of the downlink transmission
- the L3 is the first TTI length in units of time
- the L4 is the first TTI length in units of symbols
- the k is a pre-agreed or configured positive integer or fraction
- the first TTI length is the second TTI length, or is the maximum or minimum or average value of the second TTI length and the TTI length of the downlink transmission.
- the sending unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission, specifically:
- the feedback configured by the configuration signaling And determining an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission.
- the sending unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, and the feedback delay configured by the configuration signaling, to determine the downlink transmission ACK/NACK feedback information transmission.
- the location of the uplink time domain resource including:
- the configuration signaling is a high layer signaling, or the configuration signaling is carried in a first physical downlink control channel corresponding to the downlink transmission;
- the configuration signaling is for downlink transmissions using different TTI lengths, and the configured second TTI lengths are the same or different.
- the configuring the signaling to configure the second TTI length includes:
- the configuration signaling indicates that one of the set of TTI lengths of the uplink time domain resource location used for determining the downlink ACK/NACK feedback information transmission, which is pre-agreed or configured, is the second TTI length;
- the configuration signaling indicates an offset value of the second TTI length relative to a TTI length of the downlink transmission.
- the uplink time domain resource that can be used for ACK/NACK transmission includes:
- the number of consecutive symbols for uplink transmission is not less than a preset number of subframes
- a symbol/B TTIs in all or part of the uplink subframe where A is a number of symbols required for transmission of the ACK/NACK feedback information, and the A is a positive integer, the B Transmitting the number of TTIs required for the ACK/NACK feedback information, where B is a positive integer;
- a symbols/B TTIs in a subframe including symbols for uplink transmission
- all or part of the number of consecutive symbols for uplink transmission is not less than a number of A symbols/B TTIs in a preset number of subframes.
- the sending unit determines that the ACK/NACK feedback information of the downlink transmission is sent in the same uplink time domain resource location, the sending unit specifically includes:
- the downlink transmission is a first physical downlink control channel indicating that the downlink SPS resource is released, or is a first physical downlink shared channel with a corresponding first physical downlink control channel, or is a first physical downlink without corresponding The first physical downlink shared channel of the control channel.
- the second TTI length is a basic short TTI unit, where the basic short TTI unit is a basic unit of time domain transmission; or the second TTI length is one of multiple TTI lengths supported by the system.
- a device for receiving feedback information includes:
- a sending unit 21 configured to send a downlink transmission
- the receiving unit 22 is configured to determine, according to the downlink transmission TTI length and/or the second TTI length, the uplink time domain resource location of the downlink transmission ACK/NACK feedback information, and in the uplink time domain.
- the resource location receives the ACK/NACK feedback information of the downlink transmission, where the second TTI length is a TTI length configured by the configuration signaling or pre-agreed for determining an uplink time domain resource location of the ACK/NACK feedback information transmission.
- the receiving unit determines, according to the TTI length of the downlink transmission, an uplink time domain resource location of the downlink transmitted ACK/NACK feedback information, and receives the downlink transmission at the uplink time domain resource location.
- ACK/NACK feedback information including:
- TTI numbering on the TTI length of the downlink transmission, and determining to receive the ACK/NACK feedback of the downlink transmission in an uplink time domain resource that is available for ACK/NACK transmission after the TTI numbered n+k Information, wherein the TTI number of the downlink transmission is n;
- the L1 is a length of the downlink transmitted TTI in units of time
- the L2 is a length of the downlink transmitted TTI in units of symbols, where k is a pre-agreed or configured positive integer or Decimal.
- the receiving unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission, and is in the uplink Receiving, by the time domain resource location, the ACK/NACK feedback information of the downlink transmission, specifically:
- a time length not earlier than L3*k or a first one of L4*k symbols may be used for ACK/NACK transmission Receiving the downlink transmission ACK/NACK feedback information in the uplink time domain resource;
- determining that a time length of not less than L3*k or a first one of L4*k symbols is separated from an end time position or an end symbol position of the downlink transmission determined according to the first TTI length may be used for ACK/NACK transmission Receiving the downlink transmission ACK/NACK feedback information in the uplink time domain resource;
- determining to receive in an uplink time domain resource that is not less than L3*k or an uplink time domain resource that is available for ACK/NACK transmission of L4*k symbols with an end time position or an end symbol position of the downlink transmission not less than L3*k The ACK/NACK feedback information of the downlink transmission;
- the L3 is the first TTI length in units of time
- the L4 is the first TTI length in units of symbols
- the k is a pre-agreed or configured positive integer or fraction
- the first TTI length is the second TTI length, or is the maximum or minimum or average of the second TTI length and the downlink transmission TTI length value.
- the receiving unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission, specifically:
- the receiving unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, and the feedback delay configured by the configuration signaling, to determine the downlink transmission ACK/NACK feedback information transmission.
- the location of the uplink time domain resource including:
- the configuration signaling is a high layer signaling, or the configuration signaling is carried in a first physical downlink control channel corresponding to the downlink transmission;
- the configuration signaling is for downlink transmissions using different TTI lengths, and the configured second TTI lengths are the same or different.
- the configuring the signaling to configure the second TTI length includes:
- the configuration signaling indicates that one of the set of TTI lengths of the uplink time domain resource location used for determining the downlink ACK/NACK feedback information transmission, which is pre-agreed or configured, is the second TTI length;
- the configuration signaling indicates an offset value of the second TTI length relative to a TTI length of the downlink transmission.
- the uplink time domain resource that can be used for ACK/NACK transmission includes:
- the number of consecutive symbols for uplink transmission is not less than a preset number of subframes
- a symbol/B TTIs in all or part of the uplink subframe where A is a number of symbols required for transmission of the ACK/NACK feedback information, and the A is a positive integer, the B Transmitting the number of TTIs required for the ACK/NACK feedback information, where B is a positive integer;
- all or part of the symbols used for uplink transmission are used in the uplink transmission for uplink transmission. All or part of the symbol / TTI;
- a symbols/B TTIs in a subframe including symbols for uplink transmission
- all or part of the number of consecutive symbols for uplink transmission is not less than a number of A symbols/B TTIs in a preset number of subframes.
- the receiving unit determines that the ACK/NACK feedback information of the downlink transmission is sent in the same uplink time domain resource location, specifically:
- the downlink transmission is a first physical downlink control channel indicating that the downlink SPS resource is released, or is a first physical downlink shared channel with a corresponding first physical downlink control channel, or is a first physical downlink without corresponding The first physical downlink shared channel of the control channel.
- the second TTI length is a basic short TTI unit, where the basic short TTI unit is a basic unit of time domain transmission; or the second TTI length is one of multiple TTI lengths supported by the system.
- another apparatus for sending feedback information includes:
- the processor 301 is configured to read a program in the memory 304 and perform the following process:
- the second TTI length is a TTI length configured by the configuration signaling or pre-agreed for determining an uplink time domain resource location of the ACK/NACK feedback information transmission.
- the processor 301 determines, according to the TTI length of the downlink transmission, an uplink time domain resource location of the downlink transmitted ACK/NACK feedback information, and sends the uplink time domain resource location by the transceiver 302.
- the ACK/NACK feedback information of the downlink transmission specifically includes:
- the L1 is a length of the downlink transmitted TTI in units of time
- the L2 is a length of the downlink transmitted TTI in units of symbols, where k is a pre-agreed or configured positive integer or Decimal.
- the processor 301 determines, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmission ACK/NACK feedback information transmission, and passes the transceiver.
- the sending, by the 302, the ACK/NACK feedback information of the downlink transmission in the uplink time domain resource location specifically:
- a time length not earlier than L3*k or a first one of L4*k symbols may be used for ACK/NACK transmission Transmitting the ACK/NACK feedback information of the downlink transmission in the uplink time domain resource;
- determining that a time length of not less than L3*k or a first one of L4*k symbols is separated from an end time position or an end symbol position of the downlink transmission determined according to the first TTI length may be used for ACK/NACK transmission Transmitting the ACK/NACK feedback information of the downlink transmission in the uplink time domain resource;
- the first uplink time domain resource available for ACK/NACK transmission after the time length of L3*k or after L4*k symbols The ACK/NACK feedback information of the downlink transmission
- the L3 is the first TTI length in units of time
- the L4 is the first TTI length in units of symbols
- the k is a pre-agreed or configured positive integer or fraction
- the first TTI length is the second TTI length, or is the maximum or minimum or average value of the second TTI length and the TTI length of the downlink transmission.
- the processor 301 determines, according to the TTI length of the downlink transmission and/or the second TTI length, and the feedback delay configured by the configuration signaling, to determine the ACK/NACK feedback information transmission of the downlink transmission.
- the location of the uplink time domain resource including:
- the configuration signaling is a high layer signaling, or the configuration signaling is carried in a first physical downlink control channel corresponding to the downlink transmission;
- the configuration signaling is for downlink transmissions using different TTI lengths, and the configured second TTI lengths are the same or different.
- the configuring the signaling to configure the second TTI length includes:
- the configuration signaling indicates that one of the set of TTI lengths of the uplink time domain resource location used for determining the downlink ACK/NACK feedback information transmission, which is pre-agreed or configured, is the second TTI length;
- the configuration signaling indicates an offset value of the second TTI length relative to a TTI length of the downlink transmission.
- the uplink time domain resource that can be used for ACK/NACK transmission includes:
- the number of consecutive symbols for uplink transmission is not less than a preset number of subframes
- a symbol/B TTIs in all or part of the uplink subframe where A is a number of symbols required for transmission of the ACK/NACK feedback information, and the A is a positive integer, the B Transmitting the number of TTIs required for the ACK/NACK feedback information, where B is a positive integer;
- a symbols/B TTIs in a subframe including symbols for uplink transmission
- all or part of the number of consecutive symbols for uplink transmission is not less than a number of A symbols/B TTIs in a preset number of subframes.
- the processor 301 determines that the ACK/NACK feedback information of the downlink transmission is sent in the same uplink time domain resource location, the processor specifically includes:
- the downlink transmission is a first physical downlink control channel indicating that the downlink SPS resource is released, or is a first physical downlink shared channel with a corresponding first physical downlink control channel, or is a first physical downlink without corresponding The first physical downlink shared channel of the control channel.
- the second TTI length is a basic short TTI unit, where the basic short TTI unit is a basic unit of time domain transmission; or the second TTI length is one of multiple TTI lengths supported by the system.
- the transceiver 302 is configured to receive and transmit data under the control of the processor 301.
- a bus architecture (represented by bus 300), which may include any number of interconnected buses and bridges, will include one or more processors and memory 304 represented by general purpose processor 301.
- the various circuits of the memory are linked together.
- the bus 300 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein.
- Bus interface 303 provides an interface between bus 300 and transceiver 302.
- Transceiver 302 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium.
- transceiver 302 receives external data from other devices.
- the transceiver 302 is configured to transmit the processed data of the processor 301 to other devices.
- a user interface 305 can also be provided, such as a keypad, display, speaker, microphone, joystick.
- the processor 301 is responsible for managing the bus 300 and the usual processing, running a general purpose operating system as described above.
- the memory 304 can be used to store data used by the processor 301 in performing operations.
- the processor 301 can be a CPU, an ASIC, an FPGA, or a CPLD.
- another apparatus for receiving feedback information includes:
- the processor 504 is configured to read a program in the memory 505 and perform the following process:
- the uplink time domain resource location of the downlink transmission ACK/NACK feedback information Determining, according to the downlink transmission TTI length and/or the second TTI length, the uplink time domain resource location of the downlink transmission ACK/NACK feedback information, and transmitting, by the transceiver 501, the uplink time domain resource location And receiving, by the downlink signaling, the ACK/NACK feedback information, where the second TTI length is a TTI length configured by the configuration signaling or pre-agreed for determining an uplink time domain resource location of the ACK/NACK feedback information transmission.
- the processor 504 determines an uplink time domain resource location of the downlink transmitted ACK/NACK feedback information transmission according to the TTI length of the downlink transmission, and receives the uplink time domain resource location by the transceiver 501.
- the ACK/NACK feedback information of the downlink transmission specifically includes:
- TTI numbering on the TTI length of the downlink transmission, and determining to receive the ACK/NACK feedback of the downlink transmission in an uplink time domain resource that is available for ACK/NACK transmission after the TTI numbered n+k Information, wherein the TTI number of the downlink transmission is n;
- the L1 is a length of the downlink transmitted TTI in units of time
- the L2 is a length of the downlink transmitted TTI in units of symbols, where k is a pre-agreed or configured positive integer or Decimal.
- the processor 504 determines, according to the TTI length of the downlink transmission and/or the second TTI length, an uplink time domain resource location of the downlink transmitted ACK/NACK feedback information transmission, and passes the transceiver.
- the receiving, by the 501, the ACK/NACK feedback information of the downlink transmission, where the uplink time domain resource location includes:
- a time length not earlier than L3*k or a first one of L4*k symbols may be used for ACK/NACK transmission Receiving the downlink transmission ACK/NACK feedback information in the uplink time domain resource;
- determining that a time length of not less than L3*k or a first one of L4*k symbols is separated from an end time position or an end symbol position of the downlink transmission determined according to the first TTI length may be used for ACK/NACK transmission Receiving the downlink transmission ACK/NACK feedback information in the uplink time domain resource;
- determining to receive in an uplink time domain resource that is not less than L3*k or an uplink time domain resource that is available for ACK/NACK transmission of L4*k symbols with an end time position or an end symbol position of the downlink transmission not less than L3*k The ACK/NACK feedback information of the downlink transmission;
- the L3 is the first TTI length in units of time
- the L4 is the first TTI length in units of symbols
- the k is a pre-agreed or configured positive integer or fraction
- the first TTI length is the second TTI length, or is the maximum or minimum or average value of the second TTI length and the TTI length of the downlink transmission.
- the determining, by the processor 504, the uplink time domain resource location of the ACK/NACK feedback information transmission of the downlink transmission according to the TTI length of the downlink transmission and/or the second TTI length, specifically:
- the receiving unit determines, according to the TTI length of the downlink transmission and/or the second TTI length, and the feedback delay configured by the configuration signaling, to determine the downlink transmission ACK/NACK feedback information transmission.
- the location of the uplink time domain resource including:
- the configuration signaling is a high layer signaling, or the configuration signaling is carried in a first physical downlink control channel corresponding to the downlink transmission;
- the configuration signaling is for downlink transmissions using different TTI lengths, and the configured second TTI lengths are the same or different.
- the configuring the signaling to configure the second TTI length includes:
- the configuration signaling indicates that one of the set of TTI lengths of the uplink time domain resource location used for determining the downlink ACK/NACK feedback information transmission, which is pre-agreed or configured, is the second TTI length;
- the configuration signaling indicates an offset value of the second TTI length relative to a TTI length of the downlink transmission.
- the uplink time domain resource that can be used for ACK/NACK transmission includes:
- the number of consecutive symbols for uplink transmission is not less than a preset number of subframes
- a symbol/B TTIs in all or part of the uplink subframe where A is a number of symbols required for transmission of the ACK/NACK feedback information, and the A is a positive integer, the B Transmitting the number of TTIs required for the ACK/NACK feedback information, where B is a positive integer;
- a symbols/B TTIs in a subframe including symbols for uplink transmission
- all or part of the number of consecutive symbols for uplink transmission is not less than a number of A symbols/B TTIs in a preset number of subframes.
- the method specifically includes:
- the downlink transmission is a first physical downlink control channel indicating that the downlink SPS resource is released, or is a first physical downlink shared channel with a corresponding first physical downlink control channel, or is a first physical downlink without corresponding The first physical downlink shared channel of the control channel.
- the second TTI length is a basic short TTI unit, where the basic short TTI unit is a basic unit of time domain transmission; or the second TTI length is one of multiple TTI lengths supported by the system.
- the transceiver 501 is configured to receive and transmit data under the control of the processor 504.
- bus 500 can include any number of interconnected buses and bridges, and bus 500 will include one or more processors represented by processor 504 and memory represented by memory 505. The various circuits are linked together. The bus 500 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein.
- Bus interface 503 provides an interface between bus 500 and transceiver 501.
- Transceiver 501 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium.
- Data processed by processor 504 is transmitted over wireless medium via antenna 502. Further, antenna 502 also receives data and transmits the data to processor 504.
- the processor 504 is responsible for managing the bus 500 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
- the memory 505 can be used to store data used by the processor 504 when performing operations.
- the processor 504 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).
- CPU Central Embedded Device
- ASIC Application Specific Integrated Circuit
- FPGA Field-Programmable Gate Array
- CPLD Complex Programmable Logic Device
- the ACK/NACK feedback information transmission scheme of the downlink transmission using the shortened TTI is provided in the embodiment of the present application, and is used to support the normal feedback of the ACK/NACK of the downlink transmission when the length of the TTI of the downlink transmission is not fixed. Reduce feedback delay and reduce system latency.
- embodiments of the present application can be provided as a method, system, or computer program product.
- the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
- the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
第一指示域状态 | TTI长度 |
000 | 1 |
001 | 2 |
010 | 3 |
011 | 4 |
100 | 6 |
101 | 7 |
110 | 8 |
111 | 14 |
第一指示域状态 | TTI长度的偏移值(以符号个数为单位) |
00 | 0 |
01 | 2 |
10 | 4 |
11 | 6 |
反馈延迟指示域状态 | 延迟值(以ACK/NACK资源为单位) |
00 | 0 |
01 | 1 |
10 | 2 |
11 | 4 |
Claims (46)
- 一种反馈信息的发送方法,其特征在于,包括:接收下行传输;至少根据所述下行传输的TTI长度和/或第二TTI长度,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,并在所述上行时域资源位置发送所述下行传输的ACK/NACK反馈信息,所述第二TTI长度为配置信令所配置或者预先约定的用于确定ACK/NACK反馈信息传输的上行时域资源位置的TTI长度。
- 根据权利要求1所述的方法,其特征在于,根据所述下行传输的TTI长度确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,并在所述上行时域资源位置发送所述下行传输的ACK/NACK反馈信息,具体包括:确定在所述下行传输的结束时间位置或结束符号位置之后,满足L1*k的时间长度之后或L2*k个符号之后的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,确定在所述下行传输的结束时间位置或结束符号位置之后,不早于L1*k的时间长度或L2*k个符号的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,以所述下行传输的TTI长度进行TTI编号,确定在编号为n+k的TTI之后的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息,其中,所述下行传输所在的TTI编号为n;或者,确定在与所述下行传输的结束时间位置或结束符号位置间隔不少于L1*k的时间长度或L2*k个符号的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;其中,所述L1为以时间为单位的所述下行传输的TTI的长度,所述L2为以符号为单位的所述下行传输的TTI的长度,所述k为预先约定或配置的正整数或小数。
- 根据权利要求1所述的方法,其特征在于,根据所述下行传输的TTI长度和/或所述第二TTI长度,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,并在所述上行时域资源位置发送所述下行传输的ACK/NACK反馈信息,具体包括:确定在按照第一TTI长度确定的所述下行传输的结束时间位置或结束符号位置之后,满足L3*k的时间长度之后或L4*k个符号之后的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,确定在按照第一TTI长度确定的所述下行传输的结束时间位置或结束符号位置之后,不早于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,以第一TTI长度进行TTI编号,确定在编号为n+k的TTI之后的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息,其中,所述下行传输所在的TTI编号为n;或者,确定在与按照第一TTI长度确定的所述下行传输的结束时间位置或结束符号位置间隔不少于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,确定在所述下行传输的结束时间位置或结束符号位置之后,满足L3*k的时间长度之后或L4*k个符号之后的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,确定在所述下行传输的结束时间位置或结束符号位置之后,不早于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,确定在与所述下行传输的结束时间位置或结束符号位置间隔不少于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;其中,所述L3为以时间为单位的所述第一TTI长度,所述L4为以符号为单位的所述第一TTI长度,所述k为预先约定或配置的正整数或小数;所述第一TTI长度为所述第二TTI长度,或者为所述第二TTI长度与所述下行传输的TTI长度的最大值或最小值或平均值。
- 根据权利要求1所述的方法,其特征在于,至少根据所述下行传输的TTI长度和/或所述第二TTI长度,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,具体包括:根据所述下行传输的TTI长度和/或所述第二TTI长度,以及配置信令所配置的反馈时延,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置。
- 根据权利要求4所述的方法,其特征在于,根据所述下行传输的TTI长度和/或所述第二TTI长度,以及配置信令所配置的反馈时延,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,具体包括:根据所述下行传输的TTI长度和/或所述第二TTI长度,初步确定所述下行传输的 ACK/NACK反馈信息传输的上行时域资源位置;根据配置信令配置的反馈延迟,将所述初步确定的所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置进行延迟,将延迟后的上行时域资源位置最终确定为所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置。
- 根据权利要求1、3、4或5所述的方法,其特征在于,所述配置信令为高层信令,或者所述配置信令携带在所述下行传输所对应的第一物理下行控制信道中;和/或,所述配置信令针对使用不同的TTI长度的下行传输,所配置的所述第二TTI长度,相同或者不同。
- 根据权利要求1、3、4或5所述的方法,其特征在于,所述配置信令配置所述第二TTI长度,具体包括:所述配置信令指示预先约定或者配置的用于确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置的TTI长度集合中的一个值为所述第二TTI长度;或者,所述配置信令指示所述第二TTI长度相对于所述下行传输的TTI长度的偏移值。
- 根据权利要求2、3、4或5所述的方法,其特征在于,所述可用于ACK/NACK传输的上行时域资源,具体包括:全部或者部分上行子帧;或者,全部或者部分包含用于上行传输的符号的子帧;或者,全部或部分包含用于上行传输的连续符号的个数不少于预设个数的子帧;或者,全部或者部分用于上行传输的符号或TTI;或者,全部或者部分上行子帧中的全部或者部分符号/TTI;或者,全部或部分上行子帧中的A个符号/B个TTI,其中,所述A为所述ACK/NACK反馈信息传输所需占用的符号个数,所述A为正整数,所述B为所述ACK/NACK反馈信息传输所需占用的TTI个数,所述B为正整数;或者,全部或部分包含用于上行传输的符号用作上行传输的子帧中的用于上行传输的全部或部分符号/TTI;或者,全部或部分包含用于上行传输的符号的子帧中的A个符号/B个TTI;或者,全部或部分包含用于上行传输用作上行传输的连续符号的个数不少于预设个数的子帧中的用于上行传输的全部或者部分符号/TTI;或者,全部或部分包含用于上行传输的连续符号的个数不少于预设个数的子帧中的A个符号/B个TTI。
- 根据权利要求1~5中任一权项所述的方法,其特征在于,当确定多个所述下行传输的ACK/NACK反馈信息在同一个上行时域资源位置发送时,具体包括:按照多个所述下行传输所分别对应的第一物理下行控制信道所使用的DCI中的DAI指示域,将多个所述下行传输的ACK/NACK反馈信息级联,在所述上行时域资源位置发送所述级联后的ACK/NACK反馈信息。
- 根据权利要求1至5中任一权项所述的方法,其特征在于,所述下行传输为指示下行SPS资源释放的第一物理下行控制信道,或者为有对应的第一物理下行控制信道的第一物理下行共享信道,或者为无对应的第一物理下行控制信道的第一物理下行共享信道。
- 根据权利要求1所述的方法,其特征在于,所述第二TTI长度为基本短TTI单元,所述基本短TTI单元为时域传输的基本单位;或者,所述第二TTI长度为系统支持的多个TTI长度中的一个。
- 一种反馈信息的接收方法,其特征在于,包括:发送下行传输;至少根据所述下行传输的TTI长度和/或第二TTI长度,确定的所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,并在所述上行时域资源位置接收所述下行传输的ACK/NACK反馈信息,所述第二TTI长度为配置信令所配置或者预先约定的用于确定ACK/NACK反馈信息传输的上行时域资源位置的TTI长度。
- 根据权利要求12所述的方法,其特征在于,根据所述下行传输的TTI长度确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,并在所述上行时域资源位置接收所述下行传输的ACK/NACK反馈信息,具体包括:确定在所述下行传输的结束时间位置或结束符号位置之后,满足L1*k的时间长度之后或L2*k个符号之后的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,确定在所述下行传输的结束时间位置或结束符号位置之后,不早于L1*k的时间长度或L2*k个符号的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,以所述下行传输的TTI长度进行TTI编号,确定在编号为n+k的TTI之后的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息,其中,所述下行传输所在的TTI编号为n;或者,确定在与所述下行传输的结束时间位置或结束符号位置间隔不少于L1*k的时 间长度或L2*k个符号的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;其中,所述L1为以时间为单位的所述下行传输的TTI的长度,所述L2为以符号为单位的所述下行传输的TTI的长度,所述k为预先约定或配置的正整数或小数。
- 根据权利要求13所述的方法,其特征在于,根据所述下行传输的TTI长度和/或所述第二TTI长度,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,并在所述上行时域资源位置接收所述下行传输的ACK/NACK反馈信息,具体包括:确定在按照第一TTI长度确定的所述下行传输的结束时间位置或结束符号位置之后,满足L3*k的时间长度之后或L4*k个符号之后的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,确定在按照第一TTI长度确定的所述下行传输的结束时间位置或结束符号位置之后,不早于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,以第一TTI长度进行TTI编号,确定在编号为n+k的TTI之后的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息,其中,所述下行传输所在的TTI编号为n;或者,确定在与按照第一TTI长度确定的所述下行传输的结束时间位置或结束符号位置间隔不少于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,确定在所述下行传输的结束时间位置或结束符号位置之后,满足L3*k的时间长度之后或L4*k个符号之后的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,确定在所述下行传输的结束时间位置或结束符号位置之后,不早于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,确定在与所述下行传输的结束时间位置或结束符号位置间隔不少于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;其中,所述L3为以时间为单位的所述第一TTI长度,所述L4为以符号为单位的所述第一TTI长度,所述k为预先约定或配置的正整数或小数;所述第一TTI长度为所述第二TTI长度,或者为所述第二TTI长度与所述下行传输的TTI长度的最大值或最小值或平均 值。
- 根据权利要求12所述的方法,其特征在于,至少根据所述下行传输的TTI长度和/或所述第二TTI长度,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,具体包括:根据所述下行传输的TTI长度和/或所述第二TTI长度,以及配置信令所配置的反馈时延,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置。
- 根据权利要求15所述的方法,其特征在于,根据所述下行传输的TTI长度和/或所述第二TTI长度,以及配置信令所配置的反馈时延,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,具体包括:根据所述下行传输的TTI长度和/或所述第二TTI长度,初步确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置;根据配置信令配置的反馈延迟,将所述初步确定的所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置进行延迟,将延迟后的上行时域资源位置最终确定为所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置。
- 根据权利要求12、14、15或16所述的方法,其特征在于,所述配置信令为高层信令,或者所述配置信令携带在所述下行传输所对应的第一物理下行控制信道中;和/或,所述配置信令针对使用不同的TTI长度的下行传输,所配置的所述第二TTI长度,相同或者不同。
- 根据权利要求12、14、15或16所述的方法,其特征在于,所述配置信令配置所述第二TTI长度,具体包括:所述配置信令指示预先约定或者配置的用于确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置的TTI长度集合中的一个值为所述第二TTI长度;或者,所述配置信令指示所述第二TTI长度相对于所述下行传输的TTI长度的偏移值。
- 根据权利要求13~16中任一权项所述的方法,其特征在于,所述可用于ACK/NACK传输的上行时域资源,具体包括:全部或者部分上行子帧;或者,全部或者部分包含用于上行传输的符号的子帧;或者,全部或部分包含用于上行传输的连续符号的个数不少于预设个数的子帧;或者,全部或者部分用于上行传输的符号/TTI;或者,全部或者部分上行子帧中的全部或者部分符号/TTI;或者,全部或部分上行子帧中的A个符号/B个TTI,其中,所述A为所述ACK/NACK反馈信息传输所需占用的符号个数,所述A为正整数,所述B为所述ACK/NACK反馈信息传输所需占用的TTI个数,所述B为正整数;或者,全部或部分包含用于上行传输的符号用作上行传输的子帧中的用于上行传输的全部或部分符号/TTI;或者,全部或部分包含用于上行传输的符号的子帧中的A个符号/B个TTI;或者,全部或部分包含用于上行传输用作上行传输的连续符号的个数不少于预设个数的子帧中的用于上行传输的全部或者部分符号/TTI;或者,全部或部分包含用于上行传输的连续符号的个数不少于预设个数的子帧中的A个符号/B个TTI。
- 根据权利要求12~16中任一权项所述的方法,其特征在于,当确定多个所述下行传输的ACK/NACK反馈信息在同一个上行时域资源位置发送时,具体包括:确定所述ACK/NACK反馈信息为按照多个所述下行传输所分别对应的第一物理下行控制信道所使用的DCI中的DAI指示域,将多个所述下行传输的ACK/NACK反馈信息级联得到的。
- 根据权利要求12~16中任一权项所述的方法,其特征在于,所述下行传输为指示下行SPS资源释放的第一物理下行控制信道,或者为有对应的第一物理下行控制信道的第一物理下行共享信道,或者为无对应的第一物理下行控制信道的第一物理下行共享信道。
- 根据权利要求12所述的方法,其特征在于,所述第二TTI长度为基本短TTI单元,所述基本短TTI单元为时域传输的基本单位;或者,所述第二TTI长度为系统支持的多个TTI长度中的一个。
- 一种反馈信息的发送装置,其特征在于,包括:接收单元,用于接收下行传输;发送单元,用于至少根据所述下行传输的TTI长度和/或第二TTI长度,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,并在所述上行时域资源位置发送所述下行传输的ACK/NACK反馈信息,所述第二TTI长度为配置信令所配置或者预先约定的用于确定ACK/NACK反馈信息传输的上行时域资源位置的TTI长度。
- 根据权利要求23所述的装置,其特征在于,所述发送单元根据所述下行传输的TTI长度确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,并在所述上行时域资源位置发送所述下行传输的ACK/NACK反馈信息,具体包括:确定在所述下行传输的结束时间位置或结束符号位置之后,满足L1*k的时间长度之后或L2*k个符号之后的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,确定在所述下行传输的结束时间位置或结束符号位置之后,不早于L1*k的时间长度或L2*k个符号的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,以所述下行传输的TTI长度进行TTI编号,确定在编号为n+k的TTI之后的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息,其中,所述下行传输所在的TTI编号为n;或者,确定在与所述下行传输的结束时间位置或结束符号位置间隔不少于L1*k的时间长度或L2*k个符号的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;其中,所述L1为以时间为单位的所述下行传输的TTI的长度,所述L2为以符号为单位的所述下行传输的TTI的长度,所述k为预先约定或配置的正整数或小数。
- 根据权利要求23所述的装置,其特征在于,所述发送单元根据所述下行传输的TTI长度和/或所述第二TTI长度,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,并在所述上行时域资源位置发送所述下行传输的ACK/NACK反馈信息,具体包括:确定在按照第一TTI长度确定的所述下行传输的结束时间位置或结束符号位置之后,满足L3*k的时间长度之后或L4*k个符号之后的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,确定在按照第一TTI长度确定的所述下行传输的结束时间位置或结束符号位置之后,不早于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,以第一TTI长度进行TTI编号,确定在编号为n+k的TTI之后的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息,其中,所述下行传输所在的TTI编号为n;或者,确定在与按照第一TTI长度确定的所述下行传输的结束时间位置或结束符号位置间隔不少于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,确定在所述下行传输的结束时间位置或结束符号位置之后,满足L3*k的时间 长度之后或L4*k个符号之后的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,确定在所述下行传输的结束时间位置或结束符号位置之后,不早于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;或者,确定在与所述下行传输的结束时间位置或结束符号位置间隔不少于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中传输所述下行传输的ACK/NACK反馈信息;其中,所述L3为以时间为单位的所述第一TTI长度,所述L4为以符号为单位的所述第一TTI长度,所述k为预先约定或配置的正整数或小数;所述第一TTI长度为所述第二TTI长度,或者为所述第二TTI长度与所述下行传输的TTI长度的最大值或最小值或平均值。
- 根据权利要求23所述的装置,其特征在于,所述发送单元至少根据所述下行传输的TTI长度和/或所述第二TTI长度,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,具体包括:根据所述下行传输的TTI长度和/或所述第二TTI长度,以及配置信令所配置的反馈时延,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置。
- 根据权利要求26所述的装置,其特征在于,所述发送单元根据所述下行传输的TTI长度和/或所述第二TTI长度,以及配置信令所配置的反馈时延,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,具体包括:根据所述下行传输的TTI长度和/或所述第二TTI长度,初步确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置;根据配置信令配置的反馈延迟,将所述初步确定的所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置进行延迟,将延迟后的上行时域资源位置最终确定为所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置。
- 根据权利要求23、25、26或27所述的装置,其特征在于,所述配置信令为高层信令,或者所述配置信令携带在所述下行传输所对应的第一物理下行控制信道中;和/或,所述配置信令针对使用不同的TTI长度的下行传输,所配置的所述第二TTI长度,相同或者不同。
- 根据权利要求23、25、26或27所述的装置,其特征在于,所述配置信令配置所述第二TTI长度,具体包括:所述配置信令指示预先约定或者配置的用于确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置的TTI长度集合中的一个值为所述第二TTI长度;或者,所述配置信令指示所述第二TTI长度相对于所述下行传输的TTI长度的偏移值。
- 根据权利要求24~27中任一项所述的装置,其特征在于,所述可用于ACK/NACK传输的上行时域资源,具体包括:全部或者部分上行子帧;或者,全部或者部分包含用于上行传输的符号的子帧;或者,全部或部分包含用于上行传输的连续符号的个数不少于预设个数的子帧;或者,全部或者部分用于上行传输的符号或TTI;或者,全部或者部分上行子帧中的全部或者部分符号/TTI;或者,全部或部分上行子帧中的A个符号/B个TTI,其中,所述A为所述ACK/NACK反馈信息传输所需占用的符号个数,所述A为正整数,所述B为所述ACK/NACK反馈信息传输所需占用的TTI个数,所述B为正整数;或者,全部或部分包含用于上行传输的符号用作上行传输的子帧中的用于上行传输的全部或部分符号/TTI;或者,全部或部分包含用于上行传输的符号的子帧中的A个符号/B个TTI;或者,全部或部分包含用于上行传输用作上行传输的连续符号的个数不少于预设个数的子帧中的用于上行传输的全部或者部分符号/TTI;或者,全部或部分包含用于上行传输的连续符号的个数不少于预设个数的子帧中的A个符号/B个TTI。
- 根据权利要求23~27中任一权项所述的装置,其特征在于,当所述发送单元确定多个所述下行传输的ACK/NACK反馈信息在同一个上行时域资源位置发送时,具体包括:按照多个所述下行传输所分别对应的第一物理下行控制信道所使用的DCI中的DAI指示域,将多个所述下行传输的ACK/NACK反馈信息级联,在所述上行时域资源位置发送所述级联后的ACK/NACK反馈信息。
- 根据权利要求23至27任一权项所述的装置,其特征在于,所述下行传输为指示下行SPS资源释放的第一物理下行控制信道,或者为有对应的第一物理下行控制信道的第一物理下行共享信道,或者为无对应的第一物理下行控制信道的第一物理下行共享信道。
- 根据权利要求23所述的装置,其特征在于,所述第二TTI长度为基本短TTI单元,所述基本短TTI单元为时域传输的基本单位;或者,所述第二TTI长度为系统支持的多个TTI长度中的一个。
- 一种反馈信息的接收装置,其特征在于,包括:发送单元,用于发送下行传输;接收单元,用于至少根据所述下行传输的TTI长度和/或第二TTI长度,确定的所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,并在所述上行时域资源位置接收所述下行传输的ACK/NACK反馈信息,所述第二TTI长度为配置信令所配置或者预先约定的用于确定ACK/NACK反馈信息传输的上行时域资源位置的TTI长度。
- 根据权利要求34所述的装置,其特征在于,所述接收单元根据所述下行传输的TTI长度确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,并在所述上行时域资源位置接收所述下行传输的ACK/NACK反馈信息,具体包括:确定在所述下行传输的结束时间位置或结束符号位置之后,满足L1*k的时间长度之后或L2*k个符号之后的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,确定在所述下行传输的结束时间位置或结束符号位置之后,不早于L1*k的时间长度或L2*k个符号的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,以所述下行传输的TTI长度进行TTI编号,确定在编号为n+k的TTI之后的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息,其中,所述下行传输所在的TTI编号为n;或者,确定在与所述下行传输的结束时间位置或结束符号位置间隔不少于L1*k的时间长度或L2*k个符号的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;其中,所述L1为以时间为单位的所述下行传输的TTI的长度,所述L2为以符号为单位的所述下行传输的TTI的长度,所述k为预先约定或配置的正整数或小数。
- 根据权利要求34所述的装置,其特征在于,所述接收单元根据所述下行传输的TTI长度和/或所述第二TTI长度,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,并在所述上行时域资源位置接收所述下行传输的ACK/NACK反馈信息,具体包括:确定在按照第一TTI长度确定的所述下行传输的结束时间位置或结束符号位置之后,满足L3*k的时间长度之后或L4*k个符号之后的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,确定在按照第一TTI长度确定的所述下行传输的结束时间位置或结束符号位置之后,不早于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,以第一TTI长度进行TTI编号,确定在编号为n+k的TTI之后的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息,其中,所述下行传输所在的TTI编号为n;或者,确定在与按照第一TTI长度确定的所述下行传输的结束时间位置或结束符号位置间隔不少于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,确定在所述下行传输的结束时间位置或结束符号位置之后,满足L3*k的时间长度之后或L4*k个符号之后的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,确定在所述下行传输的结束时间位置或结束符号位置之后,不早于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;或者,确定在与所述下行传输的结束时间位置或结束符号位置间隔不少于L3*k的时间长度或L4*k个符号的第一个可用于ACK/NACK传输的上行时域资源中接收所述下行传输的ACK/NACK反馈信息;其中,所述L3为以时间为单位的所述第一TTI长度,所述L4为以符号为单位的所述第一TTI长度,所述k为预先约定或配置的正整数或小数;所述第一TTI长度为所述第二TTI长度,或者为所述第二TTI长度与所述下行传输的TTI长度的最大值或最小值或平均值。
- 根据权利要求34所述的装置,其特征在于,所述接收单元至少根据所述下行传输的TTI长度和/或所述第二TTI长度,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,具体包括:根据所述下行传输的TTI长度和/或所述第二TTI长度,以及配置信令所配置的反馈时延,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置。
- 根据权利要求37所述的装置,其特征在于,所述接收单元根据所述下行传输的TTI长度和/或所述第二TTI长度,以及配置信令所配置的反馈时延,确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置,具体包括:根据所述下行传输的TTI长度和/或所述第二TTI长度,初步确定所述下行传输的 ACK/NACK反馈信息传输的上行时域资源位置;根据配置信令配置的反馈延迟,将所述初步确定的所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置进行延迟,将延迟后的上行时域资源位置最终确定为所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置。
- 根据权利要求34、36、37或38所述的装置,其特征在于,所述配置信令为高层信令,或者所述配置信令携带在所述下行传输所对应的第一物理下行控制信道中;和/或,所述配置信令针对使用不同的TTI长度的下行传输,所配置的所述第二TTI长度,相同或者不同。
- 根据权利要求34、36、37或38所述的装置,其特征在于,所述配置信令配置所述第二TTI长度,具体包括:所述配置信令指示预先约定或者配置的用于确定所述下行传输的ACK/NACK反馈信息传输的上行时域资源位置的TTI长度集合中的一个值为所述第二TTI长度;或者,所述配置信令指示所述第二TTI长度相对于所述下行传输的TTI长度的偏移值。
- 根据权利要求35~38中任一权项所述的装置,其特征在于,所述可用于ACK/NACK传输的上行时域资源,具体包括:全部或者部分上行子帧;或者,全部或者部分包含用于上行传输的符号的子帧;或者,全部或部分包含用于上行传输的连续符号的个数不少于预设个数的子帧;或者,全部或者部分用于上行传输的符号/TTI;或者,全部或者部分上行子帧中的全部或者部分符号/TTI;或者,全部或部分上行子帧中的A个符号/B个TTI,其中,所述A为所述ACK/NACK反馈信息传输所需占用的符号个数,所述A为正整数,所述B为所述ACK/NACK反馈信息传输所需占用的TTI个数,所述B为正整数;或者,全部或部分包含用于上行传输的符号用作上行传输的子帧中的用于上行传输的全部或部分符号/TTI;或者,全部或部分包含用于上行传输的符号的子帧中的A个符号/B个TTI;或者,全部或部分包含用于上行传输用作上行传输的连续符号的个数不少于预设个数的子帧中的用于上行传输的全部或者部分符号/TTI;或者,全部或部分包含用于上行传输的连续符号的个数不少于预设个数的子帧中的A个符号/B个TTI。
- 根据权利要求34~38中任一权项所述的装置,其特征在于,当所述接收单元确定 多个所述下行传输的ACK/NACK反馈信息在同一个上行时域资源位置发送时,具体包括:确定所述ACK/NACK反馈信息为按照多个所述下行传输所分别对应的第一物理下行控制信道所使用的DCI中的DAI指示域,将多个所述下行传输的ACK/NACK反馈信息级联得到的。
- 根据权利要求34~38中任一权项所述的装置,其特征在于,所述下行传输为指示下行SPS资源释放的第一物理下行控制信道,或者为有对应的第一物理下行控制信道的第一物理下行共享信道,或者为无对应的第一物理下行控制信道的第一物理下行共享信道。
- 根据权利要求34所述的装置,其特征在于,所述第二TTI长度为基本短TTI单元,所述基本短TTI单元为时域传输的基本单位;或者,所述第二TTI长度为系统支持的多个TTI长度中的一个。
- 一种装置,其特征在于,包括:处理器、收发机和存储器;所述处理器,用于读取存储器中的程序,执行如权利要求1至11中任一项所述的方法。
- 一种装置,其特征在于,包括:处理器、收发机和存储器;所述处理器,用于读取存储器中的程序,执行如权利要求12至22中任一项所述的方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020187030747A KR102249740B1 (ko) | 2016-03-25 | 2017-02-08 | 피드백 정보의 전송 방법 및 장치 |
JP2018550439A JP7195144B2 (ja) | 2016-03-25 | 2017-02-08 | フィードバック情報の伝送方法及び装置 |
EP17769248.0A EP3435577B1 (en) | 2016-03-25 | 2017-02-08 | Method and device for transmitting ack/nack feedback information |
US16/088,434 US10771224B2 (en) | 2016-03-25 | 2017-02-08 | Method and device for transmitting feedback information |
JP2022149478A JP7498234B2 (ja) | 2016-03-25 | 2022-09-20 | フィードバック情報の伝送方法及び装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610180061 | 2016-03-25 | ||
CN201610180061.X | 2016-03-25 | ||
CN201610320236.2A CN107231217B (zh) | 2016-03-25 | 2016-05-13 | 一种反馈信息的传输方法及装置 |
CN201610320236.2 | 2016-05-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017161971A1 true WO2017161971A1 (zh) | 2017-09-28 |
Family
ID=59899306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2017/073101 WO2017161971A1 (zh) | 2016-03-25 | 2017-02-08 | 一种反馈信息的传输方法及装置 |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2017161971A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111164922A (zh) * | 2017-09-29 | 2020-05-15 | 联想(北京)有限公司 | 具有指示与数据块相对应的反馈信息的序列的反馈消息 |
CN114128186A (zh) * | 2019-09-25 | 2022-03-01 | 华为技术有限公司 | 一种通信方法及装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101414900A (zh) * | 2007-10-15 | 2009-04-22 | 大唐移动通信设备有限公司 | 时分双工系统混合自动重传方法及装置 |
CN101997663A (zh) * | 2009-08-28 | 2011-03-30 | 中兴通讯股份有限公司 | Harq的定时方法和装置 |
CN103036657A (zh) * | 2011-09-30 | 2013-04-10 | 华为技术有限公司 | 一种数据传输方法和装置 |
WO2014061998A1 (en) * | 2012-10-16 | 2014-04-24 | Samsung Electronics Co., Ltd. | Method and apparatus for performing hybrid automatic repeat request operation in an asymmetric multicarrier communication network environment |
-
2017
- 2017-02-08 WO PCT/CN2017/073101 patent/WO2017161971A1/zh active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101414900A (zh) * | 2007-10-15 | 2009-04-22 | 大唐移动通信设备有限公司 | 时分双工系统混合自动重传方法及装置 |
CN101997663A (zh) * | 2009-08-28 | 2011-03-30 | 中兴通讯股份有限公司 | Harq的定时方法和装置 |
CN103036657A (zh) * | 2011-09-30 | 2013-04-10 | 华为技术有限公司 | 一种数据传输方法和装置 |
WO2014061998A1 (en) * | 2012-10-16 | 2014-04-24 | Samsung Electronics Co., Ltd. | Method and apparatus for performing hybrid automatic repeat request operation in an asymmetric multicarrier communication network environment |
Non-Patent Citations (1)
Title |
---|
See also references of EP3435577A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111164922A (zh) * | 2017-09-29 | 2020-05-15 | 联想(北京)有限公司 | 具有指示与数据块相对应的反馈信息的序列的反馈消息 |
CN111164922B (zh) * | 2017-09-29 | 2022-04-08 | 联想(北京)有限公司 | 用于具有指示与数据块相对应的反馈信息的序列的反馈消息的装置及其方法 |
CN114128186A (zh) * | 2019-09-25 | 2022-03-01 | 华为技术有限公司 | 一种通信方法及装置 |
CN114128186B (zh) * | 2019-09-25 | 2023-07-11 | 华为技术有限公司 | 一种通信方法及装置 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2017162008A1 (zh) | 一种ack/nack反馈方法及相关设备 | |
JP7195144B2 (ja) | フィードバック情報の伝送方法及び装置 | |
JP6630838B2 (ja) | ダウンリンク制御情報の伝送方法及び装置 | |
WO2019174486A1 (zh) | 资源指示、确定方法及装置 | |
CN106664702B (zh) | 一种数据传输方法、装置及系统 | |
WO2017084641A1 (zh) | 一种下行控制信息dci传输方法及装置 | |
WO2021238545A1 (zh) | 信息传输方法及装置 | |
US20200344589A1 (en) | Discovery in a Communication System | |
JP2016509385A (ja) | 無線電機通信ネットワークにおける無線機器間のd2d通信におけるharq送信を可能にして実行するための、ネットワークノード、無線機器、およびそれらにおける方法 | |
WO2018024068A1 (zh) | 一种动态确定上行dmrs的传输位置的方法及设备 | |
WO2019029421A1 (zh) | 一种下行控制信道的传输方法及设备 | |
WO2016138841A1 (zh) | 数据传输的方法、反馈信息传输方法及相关设备 | |
WO2018059073A1 (zh) | 一种上行控制信息uci的传输方法和设备 | |
WO2018018776A1 (zh) | 上下行数据处理方法、装置及计算机存储介质 | |
WO2018201902A1 (zh) | 一种数据传输方法及装置 | |
WO2018054123A1 (zh) | 一种数据传输方法和设备 | |
JP2019530365A (ja) | 電力の割り当てのための方法及び装置 | |
WO2021031961A1 (zh) | 反馈信息的传输方法及通信装置 | |
WO2017206740A1 (zh) | 一种子帧类型通知、确定方法及装置 | |
WO2017133479A1 (zh) | 一种下行控制信息传输方法及装置 | |
EP4152852A1 (en) | Method for determining feedback information transmission location and device | |
JP6904511B2 (ja) | 情報伝送方法および装置 | |
WO2017161971A1 (zh) | 一种反馈信息的传输方法及装置 | |
JP7353507B2 (ja) | 物理サイドリンクフィードバック情報の決定方法、通信機器及びコンピュータ可読記憶媒体 | |
JP7498234B2 (ja) | フィードバック情報の伝送方法及び装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2018550439 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20187030747 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2017769248 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2017769248 Country of ref document: EP Effective date: 20181025 |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17769248 Country of ref document: EP Kind code of ref document: A1 |