WO2020034566A1 - Feedback code size determination schemes in wireless communication - Google Patents

Feedback code size determination schemes in wireless communication Download PDF

Info

Publication number
WO2020034566A1
WO2020034566A1 PCT/CN2019/070831 CN2019070831W WO2020034566A1 WO 2020034566 A1 WO2020034566 A1 WO 2020034566A1 CN 2019070831 W CN2019070831 W CN 2019070831W WO 2020034566 A1 WO2020034566 A1 WO 2020034566A1
Authority
WO
WIPO (PCT)
Prior art keywords
feedback
harq
wireless communication
transmission
communication method
Prior art date
Application number
PCT/CN2019/070831
Other languages
English (en)
French (fr)
Inventor
Ting Fu
Peng Hao
Wei Gou
Xianghui HAN
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to CN201980088400.3A priority Critical patent/CN113273114A/zh
Priority to PCT/CN2019/070831 priority patent/WO2020034566A1/en
Publication of WO2020034566A1 publication Critical patent/WO2020034566A1/en

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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions

Definitions

  • This patent document generally relates to systems, devices, and techniques for wireless communications.
  • Wireless communication technologies are moving the world toward an increasingly connected and networked society.
  • the rapid growth of wireless communications and advances in technology has led to greater demand for capacity and connectivity.
  • Other aspects, such as device cost, spectral efficiency, and latency are also important to meeting the needs of various communication scenarios.
  • next generation systems and wireless communication techniques need to provide support for an increased number of users and devices.
  • This document relates to methods, systems, and devices for feedback code size determination schemes in wireless communication.
  • the disclosed technology describes methods that can be implemented at a network-side device (such as a base station) or a user device to prevent or reduce feedback overhead.
  • a wireless communication method includes: determining a size of feedback information of each of multiple feedback transmission opportunities as a function of a number of candidate shared channel transmissions in a feedback window corresponding to each feedback transmission opportunity from the multiple feedback transmission opportunities, the multiple feedback transmission opportunities being in a single transmission slot; and performing a HARQ transmission based on the determining.
  • a wireless communication apparatus comprising a processor configured to perform the disclosed methods is disclosed.
  • a computer readable medium having code stored thereon having code stored thereon.
  • the code when implemented by a processor, causes the processor to implement a method described in the present document.
  • FIG. 1 shows an example of a feedback window for a single feedback opportunity in one slot.
  • FIG. 2 shows examples of feedback windows for multiple feedback opportunities in one slot based on an existing codebook mechanism in the art.
  • FIG. 3 shows an example of a base station (BS) and user equipment (UE) in wireless communication based on some implementations of the disclosed technology.
  • FIG. 4 shows an example of a block diagram of a portion of an apparatus based on some implementations of the disclosed technology.
  • FIG. 5 shows an example of feedback code size determination schemes based on some implementations of the disclosed technology.
  • FIGS. 6 to 17 show various examples of feedback windows of feedback transmission opportunities being in a single slot based on some implementations of the disclosed technology.
  • the disclosed technology may be used by implementations to determine size of feedback codes in wireless communication. Some implementations of the disclosed technology relate to schemes for determining the size of a semi-static HARQ-ACK feedback code in a 5G NR system. Some implementations of the disclosed technology provide techniques to reduce the size of the semi-static codebook that corresponds to the feedback of multiple HARQ-ACK transmissions within a slot.
  • PUCCH Physical Uplink Control Channel
  • UCI Uplink Control Information
  • a HARQ-ACK codebook size indicates the number of HARQ-ACK bits for a user device to encode for transmitting HARQ feedback for data transmission to a network device, for example, a base station. So far, in a 5G NR system, it has been discussed to determine the size of a semi-static HARQ-ACK feedback code that there can only be one HARQ-ACK feedback opportunity on an uplink slot.
  • the base station configures a feedback window for the UE, which can be, for example, the K1 set. In most cases, the feedback window is configured by K1 set.
  • the feedback window can be defined by other parameters, or defined by a combination of K1 set and other parameters.
  • the HARQ-ACK carried on the uplink slot ‘n’ feeds back all valid candidate K1 on the downlink slot ‘n-k1, ’ when k1 is any element in the Physical Downlink Shared Channel (PDSCH) collection.
  • the candidate PDSCH is all the time domain locations configured in a slot that the base station is configured through a high-level signaling that may be used to transfer the PDSCH.
  • Valid candidate PDSCH is a candidate PDSCH that is selected by some rules from the candidate PDSCH and does not conflict with each other.
  • the feedback window in the uplink slot specified in the current agreement is shown in FIG. 1.
  • the codebook size for ‘HARQ 1’ corresponds to the number of all valid candidate PDSCHs in the downlink slots 0, 1, 2.
  • the elements in the K1 set are still in the slot, and there are multiple HARQ-ACK feedback opportunities in each slot.
  • the delay between the PDSCH and the HARQ-ACK feedback needs to be within 1ms.
  • the K1 set needs to be configured as ⁇ 0/1/2 ⁇ .
  • the K1 set needs to be configured as ⁇ 0/1/2/3/4 ⁇ .
  • FIG. 2 shows the feedback windows for HARQ-ACK transmission opportunities in one slot when the existing semi-static codebook mechanism is used.
  • FIG. 2 shows the feedback windows for HARQ-ACK transmission opportunities in one slot when the existing semi-static codebook mechanism is used.
  • FIG. 2 shows the feedback window of the semi-static codebook that correspond to the feedback of multiple HARQ-ACK transmissions within a slot. This overlap can result in a high overhead for URLLC business feedback semi-static codebook.
  • the disclosed technology Upon recognition of the issues on the feedback overhead, the disclosed technology provides various implementations to reduce the size of the semi-static codebook that corresponds to the feedback of multiple HARQ-ACK transmissions within a slot.
  • the various implementations can be carried out at a network-side device or a user device.
  • FIG. 3 shows an example of a wireless communication system (e.g., a 5G or NR cellular network) that includes a BS 120 and one or more user equipment (UE) 111, 112 and 113.
  • the UEs access the BS (e.g., the network) using implementations of the disclosed technology (131, 132, 133) , which then enables subsequent communication (141, 142, 143) from the BS to the UEs.
  • the UE may be, for example, a smartphone, a tablet, a mobile computer, a machine to machine (M2M) device, an Internet of Things (IoT) device, and so on.
  • M2M machine to machine
  • IoT Internet of Things
  • FIG. 4 shows an example of a block diagram representation of a portion of an apparatus.
  • An apparatus 210 such as a base station or a wireless device (or UE) can include processor electronics 220 such as a microprocessor that implements one or more of the techniques presented in this document.
  • the apparatus 210 can include transceiver electronics 230 to send and/or receive wireless signals over one or more communication interfaces such as antenna 240.
  • the apparatus 210 can include other communication interfaces for transmitting and receiving data.
  • the apparatus 210 can include one or more memories (not explicitly shown) configured to store information such as data and/or instructions.
  • the processor electronics 220 can include at least a portion of transceiver electronics 230. In some embodiments, at least some of the disclosed techniques, modules or functions are implemented using the apparatus 210.
  • FIG. 5 shows an example of feedback code size determination schemes based on some implementations of the disclosed technology.
  • the exemplary method includes determining a size of feedback information of each of multiple feedback transmission opportunities (step 510) .
  • the size of feedback information is determined as a function of a number of candidate shared channel transmissions in a feedback window corresponding to each feedback transmission opportunity from the multiple feedback transmission opportunities, the multiple feedback transmission opportunities being in a single transmission slot.
  • the multiple feedback transmission opportunities are mapped to, belong to, or contained in the single transmission slot.
  • the exemplary method further includes performing a HARQ transmission based on the determining.
  • the wireless communication techniques suggested in the disclosed technology to determine the size of feedback information include at least one of following aspects:
  • Aspect (1) Multiple HARQ-ACK transmission opportunities within a slot divide the feedback window of the slot in a static/semi-static manner. Feedback windows corresponding to multiple HARQ-ACK transport opportunities do not overlap, or partially overlap.
  • Aspect (2) For each of HARQ-ACK transmission opportunity, its semi-static codebook feedback window is determined to satisfy PDSCH to HARQ-ACK feedback delay requirements and the K1 set configuration. Thus, the feedback window of each HARQ-ACK is within the K1 set and meets the PDSCH to HARQ-ACK feedback delay.
  • the feedback window is configured by K1 set configuration.
  • the feedback window can be configured by the K1set configuration, other parameters, or the combination of the K1 set configuration and other parameters.
  • the implementations are described for the case that the feedback window is configured by the K1 set configuration, the disclosed technology is not limited thereto and can be applied to the case the feedback window is configured by other parameters or the combination of K1 set and other parameters.
  • Aspect (3) For each HARQ-ACK transmission opportunity, its semi-static codebook feedback window does not exceed the feedback window that satisfies the requirements of PDSCH to HARQ-ACK feedback delay.
  • Aspect (4) For each HARQ-ACK transmission opportunity, its semi-static codebook feedback window does not contain the candidate PDSCH that ends within the N symbols from the starting symbol of the corresponding HARQ-ACK transmission opportunity.
  • the feedback window of each HARQ-ACK transmission opportunity does not contain the candidate PDSCH starting on or after the end of the symbol of the corresponding HARQ-ACK transmission opportunity.
  • N symbols are the minimum time for the UE to demodulate PDSCH and produce the corresponding HARQ-ACK information based on the protocol contract.
  • each subslot is configured with a different K1 set, so that multiple feedback windows of each subslot belonging to one slot do not overlap, or partially overlap. Feedback windows of each subslot belonging to one slot is configured to continue for a continuous time period.
  • the UE or base station determines the size of the semi-static HARQ-ACK codebook as a function of the number of candidate PDSCHs in a corresponding feedback window of each HARQ-ACK transmission. If there is a candidate PDSCH located across the boundary of the feedback windows, it is determined based on the start position or end position of the candidate PDSCH whether the candidate PDSCH belongs to multiple feedback windows at the same time or not, and if the candidate PDSCH belongs to a single feedback window, which feedback window the candidate PDSCH is attributed to.
  • Techniques disclosed in this patent document can reduce or avoid overlapping of slots for multiple semi-static codebook HARQ-ACK feedback over a long period of time, thus reducing overhead of semi-static codebook feedback.
  • Various implementations to determine the size of the semi-static HARQ-ACK feedback code are discussed in the below.
  • an entire HARQ-ACK feedback window may be divided into multiple parts.
  • the entire HARQ-ACK feedback window refers to a feedback window corresponding to a HARQ-ACK feedback transmitted in an uplink slot.
  • An entire HARQ-ACK feedback window of an uplink slot is divided according to a maximum number of HARQ-ACKs allowed to be transmitted in one slot.
  • the maximum number of HARQ-ACKs allowed can be configured by a higher layer configuration or defined by a specification. Assuming that there are at most two HARQ-ACKs, the entire HARQ-ACK feedback window of the uplink slot is divided to have two feedback windows.
  • the feedback window may be divided into multiple parts to satisfy (1) the feedback window of each HARQ-ACK transmission opportunity corresponds to particular one or more slots of the entire HARQ-ACK feedback window of the uplink slot and (2) the combination of the feedback windows of all HARQ-ACK transmission opportunities occupies the entire feedback window of the uplink slot.
  • the feedback windows of different HARQ-ACK transmission opportunities may overlap or not overlap.
  • FIG. 6 shows examples of feedback windows of the feedback transmission opportunities in an uplink slot.
  • the K1 set of the feedback window configured by the base station for the UE is ⁇ 0, 1, 2 ⁇
  • the feedback window corresponding to the HARQ-ACK feedback in the uplink slot 2 includes the downlink slots 0, 1, 2, as indicated by the dotted line.
  • the HARQ-ACK feedback window corresponding to the first HARQ-ACK transmission opportunity is configured as the downlink slot 0
  • the HARQ-ACK feedback window corresponding to the second HARQ-ACK transmission opportunity is configured as the downlink slots 1 and 2.
  • the feedback windows corresponding to the two HARQ-ACK transmission opportunities assigned in slot 2 do not overlap.
  • the combination of the feedback windows occupies the entire feedback window of the slot 2.
  • first and/or second HARQ-ACK transmission opportunities do not necessarily mean that a corresponding HARQ-ACK transmission needs to occur, and only indicates that there is a possibility of a corresponding HARQ-ACK transmission, and the “first” and “second” in the name do not indicates the chronological or frequency relationship of the time-frequency resources used for HARQ-ACK transmissions and only used to refer to different HARQ-ACK transmission opportunities.
  • FIG. 7 shows other examples of feedback windows of feedback transmission opportunities in an uplink slot.
  • the K1 set of the feedback window configured by the base station for the UE is ⁇ 0, 1, 2 ⁇
  • the feedback window corresponding to the HARQ-ACK feedback in the uplink slot 2 includes the downlink slots 0 to 2, as indicated by the dotted line.
  • the HARQ-ACK feedback window corresponding to the first HARQ-ACK transmission opportunity is configured as the downlink slots 0 and 1
  • the HARQ-ACK feedback window corresponding to the second HARQ-ACK transmission opportunity is configured as the downlink slots 1 and 2.
  • the feedback windows corresponding to the two HARQ-ACK transmission opportunities assigned in slot 2 partially overlap.
  • the combination of the feedback windows occupies the entire feedback window of the slot 2.
  • the size of the semi-static codebook fed back by each HARQ-ACK transmission opportunity is determined based on a candidate PDSCH in the feedback window of a corresponding HARQ-ACK transmission opportunity.
  • the entire HARQ-ACK feedback window of an uplink slot is divided according to a maximum number of HARQ-ACKs allowed to be transmitted in one slot. Assuming that there are at most two HARQ-ACKs, the entire HARQ-ACK feedback window of the uplink slot is divided to have two feedback windows.
  • the feedback window may be divided into multiple parts to satisfy: (1) All candidate PDSCHs in the feedback window of each HARQ-ACK transmission opportunity correspond to a specific one or more candidate PDSCHs in the entire HARQ-ACK feedback window of the uplink slot, and (2) The combination of the feedback windows of all HARQ-ACK transmission opportunities occupies the entire feedback window of the uplink slot.
  • the feedback windows of different HARQ-ACK transmission opportunities may overlap or not overlap.
  • the K1 set of the feedback window configured by the base station for the UE is ⁇ 0, 1, 2 ⁇
  • the feedback window corresponding to the HARQ-ACK feedback in the uplink slot 2 includes the downlink slots 0, 1, 2.
  • the feedback window of the first HARQ-ACK transmission opportunity is configured to include the candidate PDSCHs whose ranking of the ending positions are higher than x (0 ⁇ x ⁇ 1) of all the candidate PDSCHs in slots 0, 1, 2.
  • a first PDSCH has a higher ranking than a second PDSCH when the ending position of the first PDSCH is located earlier than that of the second PDSCH.
  • the feedback window of the second HARQ-ACK transmission opportunity is configured to include the candidate PDSCHs whose ranking of the ending position is lower than ‘1-x’ (0 ⁇ x ⁇ 1) of all the candidate PDSCHs in slots 0, 1, 2.
  • the feedback windows of the two HARQ-ACK transmission opportunities assigned in slot 2 do not overlap each other. The combination of the feedback windows occupies the entire feedback window of the slot 2.
  • the K1 set of the feedback window configured by the base station for the UE is ⁇ 0, 1, 2 ⁇
  • the feedback window corresponding to the HARQ-ACK feedback in the uplink slot 2 is the downlink slots 0, 1, 2.
  • the feedback window of the first HARQ-ACK transmission opportunity is configured to include the candidate PDSCHs whose ranking of the ending position are higher than x (0 ⁇ x ⁇ 1) of all the candidate PDSCHs in slots 0, 1, 2.
  • a first PDSCH has a higher ranking than a second PDSCH when the ending position of the first PDSCH is located earlier than that of the second PDSCH.
  • the feedback window of the second HARQ-ACK transmission opportunity is configured to include the candidate PDSCHs whose ranking of the ending position are lower than ‘1-y’ (0 ⁇ y ⁇ x ⁇ 1) of all candidate PDSCHs in slots 0, 1, 2.
  • the feedback windows of the first and second HARQ-ACK transmission opportunities in slot 2 partially overlap. The combination of the feedback windows occupies the entire feedback window of the slot 2.
  • the size of the semi-static codebook fed back by each HARQ-ACK transmission opportunity is determined according to the candidate PDSCH (s) in the feedback window of the HARQ-ACK transmission opportunity.
  • the entire HARQ-ACK feedback window of an uplink slot is divided according to a maximum number of HARQ-ACKs allowed to be transmitted in one slot.
  • the entire HARQ-ACK feedback window of the uplink slot is divided to have two feedback windows.
  • the feedback window may be divided into multiple parts to satisfy: (1) The feedback window of each HARQ-ACK transmission opportunity corresponds to a portion of the time interval of the feedback window of the upstream slot. (2) The combination of the feedback windows of all HARQ-ACK transmission opportunities occupies the entire feedback window of the upstream slot.
  • the feedback windows of different HARQ-ACK transmission opportunities may overlap or not overlap.
  • FIG. 8 shows examples of feedback windows of the feedback transmission opportunities.
  • the K1 set of the feedback window configured by the base station for the UE is ⁇ 0, 1, 2 ⁇
  • the feedback window corresponding to the HARQ-ACK feedback in the uplink slot 2 includes the downlink slots 0, 1, 2, as indicated by the dotted line.
  • the feedback window of the first HARQ-ACK transmission opportunity is configured to have a time interval from the start of slot 0 to the end of the 7th symbol of slot 1
  • the feedback window of the second HARQ-ACK transmission opportunity is configured to have a time interval from the 8th symbol of slot 1 to the end of slot 2.
  • the start symbol of the candidate PDSCH is on or before the 7th symbol of slot 1, and the end symbol is on or after the 8th symbol of slot 1, it needs to be decided to which feedback window the candidate PDSCH belongs. In some implementations, such decision can be made based on the start or the end position of the candidate PDSCH.
  • FIG. 9 shows other examples of feedback windows of the feedback transmission opportunities.
  • the HARQ-ACK feedback window of the first HARQ-ACK transmission opportunity is configured to have a time interval from slot 0 to slot 1 end
  • the HARQ-ACK feedback window of the second HARQ-ACK transmission opportunity is configured to have a time interval from the 8th symbol of slot 1 to the end of slot 2.
  • the 7th symbol and 8th symbol of slot 1 have been used as examples to determine the end and start points of the time interval of the time windows, and one of ordinary skilled in the art would understand that other implementations are also possible.
  • the size of the semi-static codebook fed back by each HARQ-ACK transmission opportunity is determined according to the number of the candidate PDSCHs included in the feedback window of the corresponding HARQ-ACK transmission opportunity.
  • the manner of static/semi-static partitioning of the feedback window as suggested in Implementations 1.1, 1.2, 1.3 can be achieved by the division rules in the protocol. It can also be implemented by the base station sending signaling to the UE to notify the UE to statically/semi-statically divide the feedback window.
  • the feedback window of its semi-static codebook is determined to meet the PDSCH to HARQ-ACK feedback delay requirement and the K1 set configuration.
  • FIG. 10 shows examples of feedback windows of multiple feedback transmission opportunities.
  • the subcarrier bandwidth of the FDD system is 30 KHz, and the delay between the PDSCH and the HARQ-ACK feedback needs to be within 1 ms.
  • the K1 set should be configured as ⁇ 0/1/2 ⁇ .
  • the feedback window of any HARQ-ACK transmission opportunity of the uplink slot is determined to meet the K1 set and the delay between the PDSCH and the HARQ-ACK feedback, i.e., the 1 ms time segment in this example.
  • the feedback window of the first HARQ-ACK transmission opportunity has an end position which is at the starting position of the first HARQ-ACK transmission opportunity.
  • the duration of the feedback window of the first HARQ-ACK transmission opportunities corresponds to 1ms time period.
  • the feedback window of the second HARQ-ACK transmission opportunity has an end position which is at the starting position of the corresponding HARQ-ACK transmission opportunity.
  • the duration of the feedback window of the first HARQ-ACK transmission opportunities corresponds to 1ms time period.
  • FIG. 11 shows other examples of feedback windows of multiple feedback transmission opportunities.
  • the subcarrier bandwidth of the FDD system is 30 KHz
  • the delay between the PDSCH and the HARQ-ACK feedback needs to be within 1 ms
  • one slot is divided into two subslots.
  • the K1 set should be configured as ⁇ 0/1/2/3/4 ⁇ .
  • the feedback window of any HARQ-ACK transmission opportunity of the uplink slot is determined to meet the K1 set and the delay between the PDSCH and the HARQ-ACK feedback, i.e., the 1 ms time segment in this example.
  • the feedback window of the first or second HARQ-ACK transmission opportunity in the uplink slot 2 has an end position which is at the start position of the first or second HARQ-ACK transmission opportunity.
  • the duration of the feedback window of the first or second HARQ-ACK transmission opportunity corresponds to 1ms time period and thus a start position of each feedback window of the first and second HARQ-ACK transmission opportunities can be determined.
  • the PDSCH to HARQ feedback delay requirement may be configured for the UE by the base station through high layer signaling or physical layer signaling.
  • the feedback window of its semi-static codebook does not include the candidate PDSCH that ends within N symbols before the start position of the HARQ-ACK transmission opportunity and does not include the candidate PDSCH that starting on or after the HARQ-ACK transmission symbol.
  • the N symbols are the shortest time for the protocol-subscribed UE to demodulate the PDSCH and generate HARQ-ACK information.
  • FIG. 12 shows examples of feedback windows of multiple feedback transmission opportunities.
  • the subcarrier bandwidth of the FDD system is 30KHz, and the K1 set should be configured as ⁇ 0/1/2 ⁇ .
  • the feedback window of any HARQ transmission opportunity of the uplink slot does not exist within the N symbols before the start position of the HARQ-ACK transmission opportunity.
  • the feedback window of any HARQ transmission opportunity does not include the candidate PDSCH starting on or after the HARQ-ACK transmission symbol.
  • FIG. 13 shows other examples of feedback windows of multiple feedback transmission opportunities.
  • the subcarrier bandwidth of the FDD system is 30KHz, and one slot is divided into two subslots.
  • the K1 set may be configured as ⁇ 0/1/2/3/4 ⁇ .
  • the feedback window of any HARQ-ACK transmission opportunity of the uplink slot is configured not to exist within the N-symbols before the start point of the HARQ-ACK transmission resource.
  • the candidate PDSCH starting on or after the HARQ-ACK transmission symbol is also excluded from the feedback window of any HARQ-ACK transmission opportunity.
  • each subslot is configured with a different K1 set, so that the feedback windows of the multiple subslots do not overlap or that the feedback windows of the multiple subslots partially overlap.
  • the feedback windows may be configured to exist for a continuous period of time.
  • FIG. 14 shows examples of feedback windows of multiple feedback transmission opportunities.
  • the subcarrier bandwidth of the FDD system is 30KHz.
  • one slot is divided into two subslots.
  • the subslots 4 and 5 belong to slot 2.
  • the K1 set of subslot 4 is configured as ⁇ 2/3/4 ⁇
  • the K1 set of subslot 5 is configured as ⁇ 0/1/2 ⁇ .
  • the feedback windows of subslots 4 and 5 do not overlap, and the combination of the feedback windows of subslots 4 and 5 is a continuous period of time.
  • FIG. 15 shows other examples of feedback windows of multiple feedback transmission opportunities.
  • the subcarrier bandwidth of the FDD system is 30KHz.
  • one slot is divided into two subslots.
  • Subslot 4 and 5 belong to slot2.
  • the K1 set of subslot 4 is configured as ⁇ 1/2/3/4 ⁇
  • the K1 set of subslot 5 is configured as ⁇ 0/1/2 ⁇ .
  • Subslot 4 and 5 of the feedback window partially overlap, and their feedback windows are configured for a continuous time period.
  • Implementation 5 corresponds to the combination of Implementations 2 and 3.
  • its semi-static codebook feedback window may be determined to satisfy the PDSCH to HARQ-ACK feedback delay requirements and the K1 set configuration.
  • the corresponding feedback window does not contain the candidate PDSCH that exists within the N symbols before the starting symbol of the corresponding HARQ-ACK transmission opportunity and the candidate PDSCH starting on or after the HRAC-ACK transmission symbol.
  • N symbols are the minimum time for the UE to demodulate PDSCH based on the protocol contract to produce HARQ-ACK information.
  • FIG. 16 shows examples of feedback windows of multiple feedback transmission opportunities.
  • the subcarrier bandwidth is 30khz
  • the delay between PDSCH, and HARQ-ACK feedback of the FDD system is within 1ms.
  • the K1 set needs to be configured as ⁇ 0/1/2 ⁇ .
  • the feedback windows of HARQ-ACK transmission opportunities in the slot is determined to satisfy the PDSCH to HARQ-ACK feedback delay requirements and the K1 set configuration.
  • the feedback windows of HARQ-ACK transmission opportunities do not contain the candidate PDSCH that ends within the N symbols before the starting symbol of the HARQ-ACK transmission opportunity.
  • the feedback windows of HARQ-ACK transmission opportunities do not contain the candidate PDSCH starting on or after the starting symbol of HARQ-ACK transmission opportunity.
  • the length of the first and/or second feedback window is a time period with 1ms-N symbol length. The scenario for dividing each slot into subslots are already discussed and can be applied to this implementation as well.
  • the feedback window for its semi-static codebook is determined to satisfy the PDSCH to HARQ-ACK feedback latency requirements.
  • FIG. 17 shows examples of feedback windows of multiple feedback transmission opportunities.
  • the subcarrier bandwidth is 30khz
  • the delay between PDSCH and HARQ-ACK feedback of the FDD system is within 1ms.
  • Each of the feedback windows for the HARQ-ACK transmission opportunities of the uplink slot is determined to have an ending position at the starting position of the corresponding HARQ-ACK transmission opportunity and a duration of the feedback delay, for example, the 1ms time segment.
  • the 1ms time segment that extends forward at the starting position of the Harq-ack resource.
  • the scenario for dividing each slot into subslots are already discussed and can be applied to this implementation as well. it.
  • the feedback delay between PDSCH to HARQ-ACK can be agreed in the protocol or notified by the base station through signaling (such as RRC signaling or physical layer signaling) .
  • a wireless communication method including: determining a size of feedback information of each of multiple feedback transmission opportunities as a function of a number of candidate shared channel transmissions in a feedback window corresponding to each feedback transmission opportunity from the multiple feedback transmission opportunities, the multiple feedback transmission opportunities being in a single transmission slot; and performing a HARQ transmission based on the determining.
  • a wireless communications apparatus comprising a processor and a memory, wherein the processor is configured to read code from the memory and implement a method recited in any of clauses 1 to 18.
  • a computer program product comprising a computer-readable program medium code stored thereupon, the code, when executed by a processor, causing the processor to implement a method recited in any of clauses 1 to 18.
  • a computer-readable medium may include removable and non-removable storage devices including, but not limited to, Read Only Memory (ROM) , Random Access Memory (RAM) , compact discs (CDs) , digital versatile discs (DVD) , etc. Therefore, the computer-readable media can include a non-transitory storage media.
  • program modules may include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types.
  • Computer-or processor-executable instructions, associated data structures, and program modules represent examples of program code for executing steps of the methods disclosed herein. The particular sequence of such executable instructions or associated data structures represents examples of corresponding acts for implementing the functions described in such steps or processes.
  • a hardware circuit implementation can include discrete analog and/or digital components that are, for example, integrated as part of a printed circuit board.
  • the disclosed components or modules can be implemented as an Application Specific Integrated Circuit (ASIC) and/or as a Field Programmable Gate Array (FPGA) device.
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • DSP digital signal processor
  • the various components or sub-components within each module may be implemented in software, hardware or firmware.
  • the connectivity between the modules and/or components within the modules may be provided using any one of the connectivity methods and media that is known in the art, including, but not limited to, communications over the Internet, wired, or wireless networks using the appropriate protocols.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
PCT/CN2019/070831 2019-01-08 2019-01-08 Feedback code size determination schemes in wireless communication WO2020034566A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980088400.3A CN113273114A (zh) 2019-01-08 2019-01-08 无线通信中的反馈代码大小确定方案
PCT/CN2019/070831 WO2020034566A1 (en) 2019-01-08 2019-01-08 Feedback code size determination schemes in wireless communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/070831 WO2020034566A1 (en) 2019-01-08 2019-01-08 Feedback code size determination schemes in wireless communication

Publications (1)

Publication Number Publication Date
WO2020034566A1 true WO2020034566A1 (en) 2020-02-20

Family

ID=69525076

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/070831 WO2020034566A1 (en) 2019-01-08 2019-01-08 Feedback code size determination schemes in wireless communication

Country Status (2)

Country Link
CN (1) CN113273114A (zh)
WO (1) WO2020034566A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150146643A1 (en) * 2012-06-27 2015-05-28 Samsung Electronics Co., Ltd. Method and apparatus for sending and receiving harq-ack feedback information
CN107332646A (zh) * 2016-04-29 2017-11-07 中兴通讯股份有限公司 Harq-ack的发送方法及装置
CN107359969A (zh) * 2016-05-10 2017-11-17 电信科学技术研究院 一种harq的反馈信息传输方法、ue、基站和系统
WO2018028435A1 (zh) * 2016-08-12 2018-02-15 电信科学技术研究院 一种反馈码本的确定方法及装置
US20180054280A1 (en) * 2015-04-09 2018-02-22 Samsung Electronics Co., Ltd. Method and apparatus for transmitting harq-ack feedback information in an enhanced carrier aggregation system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150146643A1 (en) * 2012-06-27 2015-05-28 Samsung Electronics Co., Ltd. Method and apparatus for sending and receiving harq-ack feedback information
US20180054280A1 (en) * 2015-04-09 2018-02-22 Samsung Electronics Co., Ltd. Method and apparatus for transmitting harq-ack feedback information in an enhanced carrier aggregation system
CN107332646A (zh) * 2016-04-29 2017-11-07 中兴通讯股份有限公司 Harq-ack的发送方法及装置
CN107359969A (zh) * 2016-05-10 2017-11-17 电信科学技术研究院 一种harq的反馈信息传输方法、ue、基站和系统
WO2018028435A1 (zh) * 2016-08-12 2018-02-15 电信科学技术研究院 一种反馈码本的确定方法及装置

Also Published As

Publication number Publication date
CN113273114A (zh) 2021-08-17

Similar Documents

Publication Publication Date Title
JP7392035B2 (ja) 物理アップリンクデータチャンネルで制御情報多重化
US11758553B2 (en) Signal transmission method, terminal device and network device for resource reservation
US10673670B2 (en) Demodulation reference signal transmission apparatus, system, and method
US11632780B2 (en) Sidelink communication method, terminal device and network device
CN113767698A (zh) 省电模式下物理下行链路控制信道(pdcch)分配的确定
KR20200096578A (ko) 통신 시스템에서의 제어 정보의 시그널링(signaling of control information in a communication system)
CN110771107B (zh) 用于交叉数字基本配置调度的方法和设备
US11381424B2 (en) Control of aperiodic signaling of SRS for wireless systems
WO2019183827A1 (en) Channel state information feedback methods and systems
US10237868B2 (en) Signal sending method, receiving method and device
US11582637B2 (en) User equipment and communication method
US20200036481A1 (en) Scheduling information sending method and network device
US20190081821A1 (en) Facilitating determination of transmission type via demodulation reference signal patterns
WO2018209803A1 (zh) 一种传输信息的方法和装置
KR101864061B1 (ko) 이차적 셀 하이브리드 자동 반복 요청 타이밍을 도출하기 위한 방법 및 장치
CN108141850B (zh) 用于无线电信系统的终端装置、基站及其操作方法
WO2020034566A1 (en) Feedback code size determination schemes in wireless communication
CN113517959B (zh) 一种反馈信息的发送方法、装置及存储介质
WO2018173000A1 (en) Signaling of srs resources for pusch rate matching
US11317429B2 (en) Method for transmitting and receiving scheduling information in communication system
CN116097613A (zh) 低延迟ack/nack传输
CN109983818B (zh) 用于发送/接收调度命令的方法和设备
CN111277359A (zh) 处理方法及设备
WO2021093189A1 (en) Repetition transmission method in a communication system
WO2023010426A1 (en) Methods and systems for coverage enhancement in wireless networks

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19849827

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205 DATED 09.12.2021)

122 Ep: pct application non-entry in european phase

Ref document number: 19849827

Country of ref document: EP

Kind code of ref document: A1