PDCCH HARQ-ACK Feedback Method and Device

Abstract

To provide a HARQ-ACK feedback method for a PDCCH for which data is not scheduled and apparatus, and to solve the problem that base stations cannot accurately receive HARQ-ACK feedback corresponding to the PDCCH.SOLUTION: Embodiments of the present invention provide a HARQ-ACK feedback method for a PDCCH for which data is not scheduled and apparatus. The method includes a step of receiving configuration information on upper layer signaling. The configuration information is used to determine the format of HARQ-ACK feedback information in a dynamic HARQ-ACK codebook for the PDCCH for which data is not scheduled.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] (Cross - reference to related applications) This application claims the priority of Chinese Patent Application No. 201911286301.4, filed in China on December 13, 2019, and all of its content is incorporated herein by reference.

[0002] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a hybrid automatic repeat request acknowledgement (HARQ - ACK) feedback method and device for a physical downlink control channel (PDCCH) where data is not scheduled.

Background Art

[0003] In related technologies, it has been found that within the active time, a secondary cell (SCell) dormancy indication can be performed via a physical downlink control channel (PDCCH) where data is not scheduled, and the terminal can feedback the correct reception of the PDCCH by transmitting an acknowledge (ACK) based on a dynamic codebook type.

[0004] However, in the prior art, the format of the HARQ-ACK feedback information of the PDCCH for which data is not scheduled to indicate the SCell suspension behavior, and the timeline of the uplink control information (Uplink Control Information, UCI) that carries the HARQ-ACK have not been determined. As a result, for the HARQ-ACK feedback of the PDCCH, there may be a lack of agreement in understanding between the terminal and the base station. Consequently, the base station may not be able to accurately receive the HARQ-ACK feedback corresponding to the PDCCH.

Summary of the Invention

Problems to be Solved by the Invention

[0005] One of the objectives of the embodiments of the present invention is to provide a HARQ-ACK feedback method and device for a PDCCH for which data is not scheduled, and to solve the problem that the base station cannot accurately receive the HARQ-ACK feedback corresponding to the PDCCH.

Means for Solving the Problems

[0006] In a first aspect, the embodiments of the present invention include a step of receiving configuration information of upper layer signaling, where the configuration information is used to determine the format of HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of a PDCCH for which data is not scheduled, and provides a HARQ-ACK feedback method for a PDCCH for which data is not scheduled.

[0007] In a second aspect, the embodiments of the present invention Providing a HARQ-ACK feedback method for a PDCCH without data scheduling, including determining a timeline of uplink control information UCI in which HARQ-ACK feedback information of the PDCCH exists based on a reception time of the PDCCH without data scheduling for secondary cell suspension indication, or determining a timeline of multiplexed UCI of the HARQ-ACK feedback information of the PDCCH and other information.

[0008] In a third aspect, an embodiment of the present invention includes a step of transmitting configuration information of upper layer signaling, where the configuration information is used to determine a format of HARQ-ACK feedback information in a dynamic HARQ-ACK codebook of a PDCCH without data scheduling, and provides a HARQ-ACK feedback method for indicating a PDCCH without data scheduling.

[0009] In a fourth aspect, an embodiment of the present invention includes a first receiving module for receiving configuration information of upper layer signaling, where the configuration information is used to determine a format of HARQ-ACK feedback information in a dynamic HARQ-ACK codebook of a PDCCH without data scheduling, and provides a terminal.

[0010] In a fifth aspect, an embodiment of the present invention includes a determination module for determining a timeline of uplink control information UCI in which HARQ-ACK feedback information of the PDCCH exists based on a reception time of the PDCCH without data scheduling for secondary cell suspension indication, or determining a timeline of multiplexed UCI of the HARQ-ACK feedback information of the PDCCH and other information, and provides a terminal.

[0011] In a sixth aspect, an embodiment of the present invention A network device including a first transmission module for transmitting configuration information of upper layer signaling, where the configuration information is used to determine a format of HARQ-ACK feedback information in a dynamic HARQ-ACK codebook of PDCCH for which the data is not scheduled.

[0012] In a seventh aspect, an embodiment of the present invention includes a processor, a memory, and a program stored in the memory and executable by the processor. When the program is executed by the processor, steps of the HARQ-ACK feedback method for PDCCH for which the data is not scheduled according to the first aspect or the second aspect, or steps of the HARQ-ACK feedback method for indicating PDCCH for which the data is not scheduled according to the third aspect are realized. A communication device is provided.

[0013] In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium in which a computer program is stored. When the computer program is executed by a processor, steps of the HARQ-ACK feedback method for PDCCH for which the data is not scheduled according to the first aspect or the second aspect, or steps of the HARQ-ACK feedback method for indicating PDCCH for which the data is not scheduled according to the third aspect are realized.

Advantages of the Invention

[0014] In embodiments of the present invention, for the HARQ-ACK feedback of PDCCH for which the data is not scheduled, it can be guaranteed that the understanding between the terminal and the network device is consistent. Thereby, the network device can accurately receive the HARQ-ACK feedback of the PDCCH, and the reliability of the communication system is improved.

[0015] Various other advantages and benefits will become apparent to those skilled in the art by viewing the detailed description of the following embodiments. The drawings are only for showing the preferred embodiments and should not be construed as limiting the present invention. Also, throughout the drawings, the same reference numerals denote the same members. The description of the drawings is set forth below.

Brief Description of the Drawings

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Modes for Carrying Out the Invention

[0017] In the following, while referring to the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Naturally, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of this application.

[0018] In the specification and claims of this application, the term "comprising" and any other variations thereof are intended to include non-exclusive inclusion. For example, a process, method, system, article or device comprising a series of steps or units is not limited to the steps or units explicitly listed, and may include other steps or units not explicitly listed or inherent to these processes, methods, articles or devices. Also, "and / or" used in the specification and claims indicates at least one of the connected objects. For example, A and / or B indicates three cases: only A exists, only B exists, and both A and B exist.

[0019] In the embodiments of the present invention, terms such as "exemplary" or "for example" are for the purpose of indicating examples, illustrations or explanations. In the embodiments of the present invention, no embodiment or design described as "exemplary" or "for example" should be construed as being more preferred or advantageous than other embodiments or designs. Strictly speaking, terms such as "exemplary" or "for example" are used for the purpose of indicating related concepts in a specific form.

[0020] The PDCCH (also referred to as PDCCH for non-scheduled data) whose data described in this specification is not scheduled may include one or more of the following. (1) PDCCH for SCell dormancy indication and without scheduling PDSCH reception. (2) A Physical Downlink Control Channel (PDCCH) for instructing the release of a Physical Downlink Shared Channel (PDSCH) in semi-persistent scheduling (SPS). (3) A PDCCH for other functions where data is not scheduled.

[0021] The DCI formats of the PDCCH where data is not scheduled in this specification include DCI format 1-1 and / or DCI format 1-2, etc.

[0022] The PDCCH where data is not scheduled for SCell suspension indication described in this specification may be a PDCCH for indicating that when the resource allocation (RA) type is 0 or 1, all bits of the frequency domain resource assignment (FDRA) field are 0 or 1 respectively, and the codebook type of the HARQ-ACK feedback is type-2, and the bandwidth of one activated downlink part (DL BWP) of a specific activated SCell is the dormant bandwidth (dormant-BWP), or it is the first non-dormant BWP (first-non-dormant-BWP-ID-for-DCI-inside-active-time) within the activation time.

[0023] The codebook type of the HARQ-ACK feedback of the PDCCH where data is not scheduled for SCell suspension indication in this specification is type-2 (i.e., pdsch-HARQ-ACK-Codebook = dynamic), which belongs to the HARQ-ACK feedback of the dynamic codebook. However, the codebook type of the PDCCH where other data is not scheduled may be type-1 (i.e., pdsch-HARQ-ACK-Codebook = semi-static) or type-2.

[0024] The technology described in this specification is not limited to Long Time Evolution (LTE) / LTE-Advanced (LTE-A) systems, and can also be used in various wireless communication systems such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems.

[0025] The terms "system" and "network" are often used interchangeably. In a CDMA system, wireless technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA) can be implemented. UTRA includes Wideband Code Division Multiple Access (WCDMA (registered trademark)) and other variants of CDMA. In a TDMA system, wireless technologies such as the Global System for Mobile Communication (GSM) can be implemented. In an OFDMA system, wireless technologies such as Ultra Mobile Broadband (UMB), Evolution-UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, and Flash-OFDM can be implemented. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). LTE and more advanced LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization called the "3rd Generation Partnership Project" (3GPP (registered trademark, same below)). CDMA2000 and UMB are described in documents from an organization called the "3rd Generation Partnership Project 2" (3GPP2). The technologies described in this specification may be applied to the systems and wireless technologies described above, or to other systems and wireless technologies.

[0026] In the following, embodiments of the present invention will be described with reference to the drawings. The method and device for HARQ-ACK feedback of PDCCH where data is not scheduled provided in the embodiments of the present invention can be applied to a wireless communication system. Referring to FIG. 1, FIG. 1 is a schematic architecture diagram of a wireless communication system provided in an embodiment of the present invention. As shown in FIG. 1, the wireless communication system may include a network device 11 and a terminal 12. The terminal 12 may be described as UE12, and the terminal 12 can communicate with the network device 11 (transmit signaling or data). In actual applications, the connection between the above devices may be a wireless connection, but for the convenience of intuitively showing the connection relationship between the devices, it is shown by a solid line in FIG. 1.

[0027] The network device 11 provided in the embodiments of the present invention may be a base station. The base station may be a commonly used base station, an evolved node base station (eNB), or a device such as a network device in a 5G system (for example, a next generation node base station (gNB) or a transmission and reception point (TRP)).

[0028] The terminal 12 provided in the embodiments of the present invention may be a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), a mobile Internet device (MID), a wearable device, or an in-vehicle device, etc.

[0029] Referring to FIG. 2, an embodiment of the present invention provides a method for determining HARQ-ACK feedback of PDCCH where data is not scheduled. The execution subject of the method may be a terminal, and the method includes Including step 201 of receiving the configuration information of the upper layer signaling, where the configuration information is used to determine the format of the HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of the PDCCH for which data is not scheduled.

[0030] In an embodiment of the present invention, the PDCCH for which data is not scheduled may be a PDCCH in which all bits of the Resource Allocation (RA) field are 0 or all 1. For example, when the resource allocation is of resource allocation type 0 (resourceAllocation = resourceAllocationType0), in DCI format1_1 or DCI format1_2, etc., all bits in the Frequency Domain Resource Assignment (FDRA) field are 0. Or, when the resource allocation is of resource allocation type 1 (resourceAllocation = resourceAllocationType1), in DCI format1_1 or DCI format1_2, etc., all bits of the FDRA field are 1. The dynamic HARQ-ACK codebook is also called the Type2 HARQ-ACK codebook.

[0031] In an embodiment of the present invention, the dynamic HARQ-ACK codebook is also called the Type2 HARQ-ACK codebook.

[0032] In an embodiment of the present invention, the format of the HARQ-ACK feedback information may be the number of bits of HARQ-ACK.

[0033] In an embodiment of the present invention, the upper layer signaling may be Radio Resource Control (RRC) signaling, but of course, it is not limited thereto.

[0034] In an embodiment of the present invention, after determining the format of HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of PDCCH for which data is not scheduled, HARQ-ACK feedback of the HARQ-ACK feedback information of PDCCH for which data is not scheduled can also be performed according to the format of the HARQ-ACK feedback information. Optionally, a terminal in an embodiment of the present invention can perform HARQ-ACK feedback of the HARQ-ACK feedback information of PDCCH for which data is not scheduled in any of the following methods.

[0035] In Method 1, according to the format of the HARQ-ACK feedback information, HARQ-ACK feedback of the HARQ-ACK feedback information of the PDCCH for which data is not scheduled is performed in the first sub-codebook, and the first sub-codebook is used for HARQ-ACK feedback at the transport block (TB) level.

[0036] In Method 2, according to the format of the HARQ-ACK feedback information, HARQ-ACK feedback of the HARQ-ACK feedback information of the PDCCH for which data is not scheduled is performed in the second sub-codebook, and the second sub-codebook is used for HARQ-ACK feedback at the code block group (CBG) level.

[0037] The first sub-codebook transmits HARQ-ACK feedback of the following information. (1) In a serving cell configured with PDSCH-code block group transmission, SPS PDSCH release, SPS PDSCH reception, and TB-based PDSCH receptions scheduled by DCI format 1-0 are transmitted. In a cell where PDSCH-CodeBlockGroupTransmission is not configured, it transmits PDSCH data reception scheduled by DCI format 1-1 and DCI format 1-0.

[0038] The second sub-codebook transmits HARQ-ACK feedback of the following information. In a serving cell where PDSCH-CodeBlockGroupTransmission is configured, it transmits CBG-based PDSCH receptions scheduled by DCI format 1-1.

[0039] Also, the counter downlink assignment index (C-DAI) value and the total DAI (T-DAI) value are each applied to each HARQ-ACK sub-codebook. The UE generates a dynamic HARQ-ACK codebook by adding the second HARQ-ACK sub-codebook to the first HARQ-ACK sub-codebook.

[0040] In an embodiment of the present invention, the terminal can ignore the T-DAI indication in DCI format 1-1 or DCI format 1-2. The feedback of DCI format 1-0 is per transport block (TB) feedback, has only C-DAI, and no T-DAI. On the other hand, the feedback of DCI format 1-1 and DCI format 1-2 has both C-DAI and T-DAI.

[0041] In some embodiments, before performing the feedback of the HARQ-ACK feedback information of the PDCCH where data is not scheduled, the method It may further include the step of receiving the upper layer signaling or DCI, and the upper layer signaling or DCI instructs the terminal to perform feedback of HARQ-ACK feedback information of PDCCH for which the data is not scheduled in the first sub-codebook or the second sub-codebook. That is, via the network, the upper layer signaling or DCI instructs the UE to perform feedback of HARQ-ACK feedback information of PDCCH for which the data is not scheduled in the first sub-codebook or the second sub-codebook.

[0042] The upper layer signaling may be RRC signaling, but it is understandable that it is not limited thereto.

[0043] In some embodiments, the DCI includes a first field, and the bits of the first field instruct the terminal to perform feedback of HARQ-ACK feedback information of PDCCH for which the data is not scheduled in the first sub-codebook or the second sub-codebook. The first field (1) Modulation and Coding Scheme (MCS), (2) Redundancy Version (RV), (3) HARQ process number, (4) New Data Indication (NDI), and (5) total downlink allocation index (total DAI, t-DAI), and includes one or more of them.

[0044] For example, it is possible to instruct to use the first sub-codebook or the second sub-codebook with the bits of MCS, RV, number of HARQ processes, NDI, and / or T-DAI field in DCI. For example, it may be instructed to use the first sub-codebook with "1" and to use the second sub-codebook with "0", but of course, it is not limited thereto.

[0045] In some embodiments, the configuration information in step 201 is (1) For example, the number of transport blocks (TBs) of the Physical Downlink Shared Channel (PDSCH), such as the maximum number of TBs of the PDSCH, (2) For example, the number of codeblock groups (CBGs) of each TB of the PDSCH, such as the maximum number of CBGs of each TB of the PDSCH, (3) For example, the number of transmission reception points (TRPs) of the PDSCH transmission, such as the maximum number of TRPs of the PDSCH transmission, (4) A dynamic sub-codebook corresponding to the HARQ-ACK feedback information of the PDCCH where data is not scheduled, and (5) At least one of whether to enable the spatial bundling indication of HARQ-ACK can be indicated.

[0046] In some embodiments, the format of the HARQ-ACK feedback information may include the number of bits of the HARQ-ACK feedback information. The number of bits of the HARQ-ACK feedback information is the maximum number of CBGs of the TB of the PDSCH indicated by the configuration information and the maximum number of TBs of the PDSCH transmission, or the maximum number of TRPs of the PDSCH transmission indicated by the configuration information and the maximum number of TBs of the PDSCH transmission, or determined based on the maximum number of CBGs of the TB of the PDSCH, the maximum number of TBs of the PDSCH transmission, and the maximum number of TRPs of the PDSCH transmission indicated by the configuration information.

[0047] In some embodiments, the number of bits of HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of PDCCH for which the data is not scheduled is the product of the maximum number of CBGs of the TB of the PDSCH and the maximum number of TBs of the PDSCH transmission, or the product of the maximum number of TRPs of the PDSCH transmission and the maximum number of TBs of the PDSCH transmission, or equal to the product of the maximum number of CBGs of the TB of the PDSCH, the maximum number of TBs of the PDSCH transmission, and the maximum number of TRPs of the PDSCH transmission.

[0048] In the following, Examples 1 to 5 will be used to explain how to determine the format of the HARQ-ACK feedback information of the PDCCH for which the data is not scheduled based on the configuration information of the upper layer signaling.

[0049] Examples 1 and 2 correspond to performing feedback of the HARQ-ACK feedback information of the PDCCH for which the data is not scheduled based on the first sub-codebook described above, and Examples 3, 4, and 5 correspond to performing feedback of the HARQ-ACK feedback information of the PDCCH for which the data is not scheduled based on the second sub-codebook described above.

[0050] In Example 1, the configuration information indicates that the maximum number of downlink TBs of the PDSCH is 2, and the format of the HARQ-ACK feedback information of the PDCCH for which the data is not scheduled includes two HARQ-ACK bits. In Example 2, the configuration information indicates that the maximum number of downlink TBs of the PDSCH is 2, enables the spatial bundling indication of HARQ-ACK, and the format of the HARQ-ACK feedback information of the PDCCH for which the data is not scheduled includes one HARQ-ACK bit.

[0051] Optionally, the process of generating the one HARQ-ACK bit may operate between two bits corresponding to two TBs to obtain the one HARQ-ACK bit. Currently, when only one TB is being transmitted, it is understandable that the feedback bit corresponding to another TB is set to ACK by default.

[0052] In Example 3, based on the maximum number of CBGs of the TBs of the PDSCH indicated by the configuration information and the maximum number of TBs of the PDSCH transmission, determine the number of bits of the HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of the PDCCH for which the data is not scheduled. For example, the number of bits of the HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of the PDCCH for which the data is not scheduled is equal to the product of the maximum number of CBGs of the TBs of the PDSCH and the maximum number of TBs of the PDSCH transmission.

[0053] In this example, when the network configures CBG-based HARQ-ACK feedback and retransmission for the UE, calculate the number of bits of HARQ-ACK according to N = the maximum number of CBGs and C = the maximum number of TBs, and the UE generates and transmits HARQ-ACK with N*C bits.

[0054] In Example 4, based on the maximum number of TRPs of the PDSCH transmission indicated by the configuration information and the maximum number of TBs of the PDSCH transmission, determine the number of bits of the HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of the PDCCH for which the data is not scheduled. For example, the number of bits of the HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of the PDCCH for which the data is not scheduled is equal to the product of the maximum number of TRPs of the PDSCH transmission and the maximum number of TBs of the PDSCH transmission.

[0055] In this example, when the network configures a multi-TRP based multi-PDCCH (Multiple-PDCCH based Multiple TRP) for the UE and the HARQ-ACK feedback is joint (e.g., joint HARQ feedback for PDCCHs within two TRPs), when the UE simultaneously feeds back HARQ-ACK from the PDCCHs of multiple TRPs, the number of bits of HARQ-ACK is calculated according to K = the maximum number of TRPs and M = the maximum number of TBs for PDSCH transmission, and the UE generates and transmits HARQ-ACK with K * M bits.

[0056] In Example 5, based on the maximum number of CBGs of the TB of the PDSCH indicated by the configuration information, the maximum number of TBs for the PDSCH transmission, and the maximum number of TRPs for the PDSCH transmission, the number of bits of the HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of the PDCCH for which the data is not scheduled is determined. For example, the number of bits of the HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of the PDCCH for which the data is not scheduled is equal to the product of the maximum number of CBGs of the TB of the PDSCH, the maximum number of TBs for the PDSCH transmission, and the maximum number of TRPs for the PDSCH transmission.

[0057] In this example, when the network configures CBG-based HARQ-ACK feedback and retransmission, and a multi-TRP based multi-PDCCH (Multiple-PDCCH based Multiple TRP) for the UE and the HARQ-ACK feedback is joint (e.g., joint HARQ feedback for PDCCHs within two TRPs), when the UE simultaneously feeds back HARQ-ACK from the PDCCHs of multiple TRPs, the number of bits of HARQ-ACK is calculated according to L = the maximum number of CBGs, H = the maximum number of TRPs, and P = the maximum number of TBs for PDSCH transmission, and the UE generates and transmits HARQ-ACK with L * H * P bits.

[0058] In some embodiments, as described in the above Examples 1 to 5, when a PDCCH in which the data is not scheduled is detected, based on the number of bits of the HARQ-ACK feedback information of the PDCCH in which the data is not scheduled, the HARQ-ACK feedback information is fed back, and the HARQ-ACK feedback information is ACK.

[0059] In some embodiments, as described in the above Examples 1, 3 to 5, all bits in the HARQ-ACK feedback information are ACK, or the first bit in the HARQ-ACK feedback information is ACK, or at least one bit in the HARQ-ACK feedback information is ACK.

[0060] In an embodiment of the present invention, the terminal can determine the format of the HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of the PDCCH in which the data is not scheduled based on the configuration information of the upper layer signaling. Thereby, for the HARQ-ACK feedback of the PDCCH in which the data is not scheduled, the understanding between the terminal and the network device is consistent, ensuring that the network device can accurately receive the HARQ-ACK feedback of the PDCCH, and improving the reliability of the communication system.

[0061] Referring to FIG. 3, an embodiment of the present invention further provides a method for determining the HARQ-ACK feedback of a PDCCH in which the data is not scheduled. The execution subject of the method may be a terminal, and the method includes Based on the reception time of a PDCCH (PDCCH without scheduling PDSCH for Scell dormancy indication) for which data is not scheduled for a secondary cell suspension indication, determine the timeline of uplink control information (UCI) where the HARQ-ACK feedback information of the PDCCH exists, or determine the timeline of multiplexed UCI of the HARQ-ACK feedback information of the PDCCH and other information, step 301 is included.

[0062] The types of the above UCI are HARQ-ACK, channel state information (CSI), and scheduling request (SR).

[0063] The above UCI can be transmitted on a physical uplink control channel (PUCCH) resource, and CSI can be transmitted on a physical uplink shared channel (PUSCH) by means of DCI triggering. When the resources of PUCCH and / or PUSCH for transmitting different UCI overlap in time, the UE needs to multiplex the UCI transmitted on multiple channels on the same PUCCH or PUSCH resource.

[0064] When the PUCCH for transmitting UCI and the PUSCH on which the UE transmits data overlap in time, the UE multiplexes and transmits the UCI on the PUSCH, and the PUSCH can be a scheduled PUSCH or a configured grant PUSCH.

[0065] In an embodiment of the present invention, other information may also mean UCI other than the HARQ-ACK of a PDCCH for which data is not scheduled for a secondary cell suspension indication.

[0066] Optionally, the other information may include any one or more of (1) CSI, (2) SR, and (3) HARQ-ACK feedback that feeds back, for the secondary cell suspension indication, other than PDCCH for which data is not scheduled.

[0067] In the following, Examples 1 to 3 will be used to explain how to determine the timeline of UCI in which HARQ-ACK feedback information of PDCCH exists or the timeline of multiplexed UCI of HARQ-ACK feedback information of PDCCH and other information.

[0068] In Example 1, based on the reception time of the last symbol of the PDCCH for which data is not scheduled for the secondary cell suspension indication and the first time interval, the timeline of UCI in which the HARQ-ACK feedback information of the PDCCH exists is determined. The first time interval includes N symbols, and the value of N is related to the value of the sub-carrier spacing (SCS) of the PDCCH, and N is greater than 1.

[0069] For example, in the case of UE processing capability 1, if the SCS of the PDCCH = 15 kHz, then N = 10; or if the SCS of the PDCCH = 30 kHz, then N = 12; or if the SCS of the PDCCH = 60 kHz, then N = 22; or if the SCS of the PDCCH = 120 kHz, then N = 25. Also, for example, in the case of a UE with capability 2 in FR1 (450 MHz - 6000 MHz, also called Sub-6 GHz), if the SCS of the PDCCH = 15 kHz, then N = 5; or if the SCS of the PDCCH = 30 kHz, then N = 5.5; or if the SCS of the PDCCH = 60 kHz, then N = 11.

[0070] In Example 2, based on the reception time of the last symbol of the PDCCH for which data is not scheduled for the secondary cell suspension indication and the second time interval, determine the timeline of the multiplexed UCI of the HARQ-ACK feedback information of the PDCCH and other information. The second time interval is determined based on one or more of the number of sampling points of the Fast Fourier Transform (FFT) or Inverse Fast Fourier Transform (IFFT), the number of sampling points of the Cyclic Prefix (CP), the sampling period, and the SCS of the PDCCH.

[0071] Furthermore, the second time interval can be determined by the following formula.

Equation

[0072] The terminal can receive one or more PDCCHs for which data is not scheduled for the secondary cell suspension indication. In this case, it can be understood that the terminal determines the corresponding second time interval based on the one or more received PDCCHs.

[0073] For example, when the terminal receives a plurality of PDCCHs for which data is not scheduled for secondary cell suspension indication and transmits HARQ-ACK feedback information of the plurality of PDCCHs in the same UCI, the plurality of PDCCHs may correspond to a plurality of second time intervals. At this time, the terminal can select the maximum second time interval corresponding to the plurality of PDCCHs to determine the timeline of the UCI.

[0074] For example, when the terminal receives one PDCCH for which data is not scheduled for secondary cell suspension indication, the terminal can select the second time interval corresponding to the PDCCH to determine the timeline of the UCI.

[0075] Hereinafter, the parameters in the above formula will be exemplarily described.

[0076] For example, the sampling points of FFT or IFFT are 2048, and the sampling points of CP are 144.

[0077] Also, for example, in the case of UE processing capability 1, if the SCS of the PDCCH = 15 kHz, then N = 10; or if the SCS of the PDCCH = 30 kHz, then N = 12; or if the SCS of the PDCCH = 60 kHz, then N = 22; or if the SCS of the PDCCH = 120 kHz, then N = 25.

[0078] Also, for example, in the case of a terminal with capability 2 in FR1 (450 MHz - 6000 MHz, also called Sub-6 GHz), if the SCS of the PDCCH = 15 kHz, then N = 5; or if the SCS of the PDCCH = 30 kHz, then N = 5.5; or if the SCS of the PDCCH = 60 kHz, then N = 11.

[0079] Referring to FIG. 4, FIG. 4 shows determining the timeline of UCI multiplexing by the above formula.

[0080] If one PUCCH transmission or PUSCH transmission corresponds to one DCI format detected by the UE, the UE expects that the first symbol S0 of the earliest PUCCH or PUSCH within the group where PUCCH and PUSCH overlap in a slot satisfies the following timeline condition.

[0081] (1) When receiving one "PDCCH with no data scheduled for secondary cell suspension indication", S0 shall satisfy the time interval T

Number

[0082] (2) When receiving multiple "PDCCH with no data scheduled for secondary cell suspension indication", S0 shall satisfy the time interval

Number

Number

Number

Number

Number

Number

[0083] In Example 3, based on the reception time of the PDCCH for which data is not scheduled and the third time interval for the secondary cell suspension indication, determine the timeline of the UCI in which the HARQ-ACK feedback information of the PDCCH exists, The third time interval is the time interval between the last symbol for receiving the PDCCH and the first symbol of the uplink physical channel for feeding back the HARQ-ACK feedback information of the PDCCH.

[0084] In the above-described Examples 1 to 3, the UCI in which the HARQ-ACK feedback information of the PDCCH exists is carried by one or more physical uplink channels of (1) PUCCH and (2) PUSCH.

[0085] In an embodiment of the present invention, the terminal determines the timeline of the UCI in which the HARQ-ACK feedback information of the PDCCH exists based on the reception time of the PDCCH for which data is not scheduled for the secondary cell suspension indication, or determines the timeline of the multiplexed UCI of the HARQ-ACK feedback information of the PDCCH and other information, and for the HARQ-ACK feedback of the PDCCH for which data is not scheduled, it is possible to ensure that the understanding between the terminal and the network device is consistent. Thereby, the network device can accurately receive the HARQ-ACK feedback of the PDCCH, and the reliability of the communication system is improved.

[0086] Referring to FIG. 5, an embodiment of the present invention further provides a HARQ-ACK feedback method for instructing a PDCCH without data scheduling, and the execution entity of the method may be a network device. The method includes: including step 501 of transmitting configuration information of upper layer signaling, where the configuration information is used to determine the format of HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of the PDCCH without data scheduling.

[0087] In an embodiment of the present invention, the upper layer signaling may be RRC signaling, but of course, it is not limited thereto.

[0088] In some embodiments, optionally, the method further includes: further including a step of transmitting the upper layer signaling or DCI, where the upper layer signaling or DCI instructs the terminal to perform feedback of HARQ-ACK feedback information of the PDCCH without data scheduling in a first sub-codebook or a second sub-codebook.

[0089] In an embodiment of the present invention, for the HARQ-ACK feedback of the PDCCH without data scheduling, it can be ensured that the understanding between the terminal and the network device is consistent. Thereby, the network device can accurately receive the HARQ-ACK feedback of the PDCCH, and the reliability of the communication system is improved.

[0090] Referring to FIG. 6, an embodiment of the present invention further provides a terminal 600, and the terminal 600 includes: a first receiving module 601 for receiving configuration information of upper layer signaling, where the configuration information is used to determine the format of HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of the PDCCH without data scheduling.

[0091] In some embodiments, the terminal shown in FIG. 6 In the first sub - codebook for HARQ - ACK feedback at the transport block TB level, according to the format of the HARQ - ACK feedback information, for performing the feedback of the HARQ - ACK feedback information of the PDCCH for which the data is not scheduled, or further includes a first feedback module 602, which is used for performing the feedback of the HARQ - ACK feedback information of the PDCCH for which the data is not scheduled in the second sub - codebook for HARQ - ACK feedback at the codeblock group CBG level according to the format of the HARQ - ACK feedback information.

[0092] In some embodiments, the terminal shown in FIG. 6 further includes a second receiving module for receiving upper - layer signaling or DCI, where the upper - layer signaling or DCI instructs the terminal to perform the feedback of the HARQ - ACK feedback information of the PDCCH for which the data is not scheduled in the first sub - codebook or the second sub - codebook.

[0093] In some embodiments, the DCI includes a first field, and the bits of the first field instruct the terminal to perform the feedback of the HARQ - ACK feedback information of the PDCCH for which the data is not scheduled in the first sub - codebook or the second sub - codebook. The first field (1) MCS, (2) RV, (3) number of HARQ processes, (4) NDI, and (5) t - DAI, includes one or more of them.

[0094] In some embodiments, the configuration information (1) For example, the number of TBs of the PDSCH, such as the maximum number of TBs of the PDSCH, (2) For example, the number of CBGs of each TB of each PDSCH, such as the maximum number of CGBs of each TB of each PDSCH, (3) For example, the number of TRPs of PDSCH transmission, such as the maximum number of TRPs of PDSCH transmission, (4) A dynamic sub - codebook corresponding to the HARQ - ACK feedback information of PDCCH for which data is not scheduled, and (5) may include at least one of whether to enable the spatial bundling indication of HARQ - ACK.

[0095] In some embodiments, the configuration information indicates that the maximum number of downlink TBs of the PDSCH is 2 and the format of the HARQ - ACK feedback information of the PDCCH for which data is not scheduled includes two HARQ - ACK bits, or the configuration information indicates that the maximum number of downlink TBs of the PDSCH is 2, enables the spatial bundling indication of HARQ - ACK, and the format of the HARQ - ACK feedback information of the PDCCH for which data is not scheduled includes one HARQ - ACK bit.

[0096] In some embodiments, the format of the HARQ - ACK feedback information includes the number of bits of the HARQ - ACK feedback information, and the number of bits of the HARQ - ACK feedback information is the maximum number of CBGs of the TB of the PDSCH and the maximum number of TBs of the PDSCH transmission indicated by the configuration information, or the maximum number of TRPs of the PDSCH transmission and the maximum number of TBs of the PDSCH transmission indicated by the configuration information, or determined based on the maximum number of CBGs of the TB of the PDSCH, the maximum number of TBs of the PDSCH transmission, and the maximum number of TRPs of the PDSCH transmission indicated by the configuration information.

[0097] In some embodiments, the number of bits of HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of PDCCH for which the data is not scheduled is the product of the maximum number of CBGs of the TB of the PDSCH and the maximum number of TBs of the PDSCH transmission, or the product of the maximum number of TRPs of the PDSCH transmission and the maximum number of TBs of the PDSCH transmission, or equal to the product of the maximum number of CBGs of the TB of the PDSCH, the maximum number of TBs of the PDSCH transmission, and the maximum number of TRPs of the PDSCH transmission.

[0098] In some embodiments, when the terminal detects a PDCCH for which the data is not scheduled, the terminal further includes a second feedback module for feedbacking the HARQ-ACK feedback information of the PDCCH for which the data is not scheduled based on the number of bits of the HARQ-ACK feedback information, and the HARQ-ACK feedback information is an affirmative response ACK.

[0099] In some embodiments, all bits in the HARQ-ACK feedback information are ACK, or the first bit in the HARQ-ACK feedback information is ACK, or at least one bit in the HARQ-ACK feedback information is ACK.

[0100] The terminal provided in the embodiments of the present invention can implement the embodiments of the method shown in FIG. 2 above. Since the realization principle and technical effects are similar, the description is omitted in this embodiment.

[0101] Referring to FIG. 7, the embodiments of the present invention further provide a terminal 700, and the terminal 700 is A determination module 701 is included for determining a timeline of uplink control information UCI in which HARQ-ACK feedback information of the PDCCH exists, based on a reception time of a PDCCH for which data is not scheduled for a secondary cell suspension indication, or for determining a timeline of multiplexed UCI of the HARQ-ACK feedback information of the PDCCH and other information.

[0102] In some embodiments, the determination module 701 is also used to determine a timeline of UCI in which HARQ-ACK feedback information of the PDCCH exists, based on a reception time of a last symbol of the PDCCH for which data is not scheduled for the secondary cell suspension indication and a first time interval, the first time interval includes N symbols, a value of N is related to a value of SCS of the PDCCH, and N is greater than 1.

[0103] In some embodiments, the determination module 701 is also used to determine a timeline of multiplexed UCI of the HARQ-ACK feedback information of the PDCCH and other information, based on a reception time of a last symbol of the PDCCH for which data is not scheduled for the secondary cell suspension indication and a second time interval. The second time interval is determined based on one or more of a sampling number of a fast Fourier transform FFT, a sampling number of a cyclic prefix CP, a sampling period, and a subcarrier spacing SCS of the PDCCH.

[0104] In some embodiments, the second time interval is determined by the following formula:

Equation

[0105] In some embodiments, if the SCS of the PDCCH = 15 kHz, then N = 10; or if the SCS of the PDCCH = 30 kHz, then N = 12; or if the SCS of the PDCCH = 60 kHz, then N = 22; or if the SCS of the PDCCH = 120 kHz, then N = 25; or if the SCS of the PDCCH = 15 kHz, then N = 5; or if the SCS of the PDCCH = 30 kHz, then N = 5.5; or if the SCS of the PDCCH = 60 kHz, then N = 11.

[0106] In some embodiments, the determination module 701 is also used to determine the timeline of the UCI where the HARQ-ACK feedback information of the PDCCH exists based on the reception time of the PDCCH for which data is not scheduled and the third time interval for the secondary cell suspension indication, wherein the third time interval is the time interval between the last symbol for receiving the PDCCH and the first symbol of the uplink physical channel for feeding back the HARQ-ACK feedback information of the PDCCH.

[0107] The terminal provided by the embodiment of the present invention can execute the method embodiment shown in FIG. 3 described above. Since its realization principle and technical effects are similar, the description is omitted in this embodiment.

[0108] Referring to FIG. 8, the embodiment of the present invention further provides a network device, and the network device 800 includes a first transmission module 801 for transmitting configuration information of upper layer signaling, and the configuration information is used to determine the format of HARQ-ACK feedback information in the dynamic HARQ-ACK codebook of the PDCCH for which data is not scheduled.

[0109] In some embodiments, the network device 800 shown in FIG. 8 further includes a second transmission module for transmitting upper layer signaling or DCI, and the upper layer signaling or DCI instructs the terminal to feedback the HARQ-ACK feedback information of the PDCCH in which the data is not scheduled in the first sub-codebook or the second sub-codebook.

[0110] The network device provided by the embodiment of the present invention can execute the method embodiment shown in FIG. 5 described above. Since its realization principle and technical effect are similar, the description is omitted in this embodiment.

[0111] Referring to FIG. 9, FIG. 9 is a configuration diagram of a communication device to which an embodiment of the present invention is applied. As shown in FIG. 9, the communication device 900 includes a processor 901, a transceiver 902, a memory 903, and a bus interface. The processor 901 can be responsible for the management of the bus architecture and normal processing. The memory 903 can store data used by the processor 901 when executing operations.

[0112] In one embodiment of the present invention, the communication device 900 further includes a program stored in the memory 903 and executable by the processor 901. When the program is executed by the processor 901, the steps of the method shown in FIG. 2 or FIG. 3 or FIG. 5 described above are realized.

[0113] In FIG. 9, the bus architecture may include any number of buses and bridges that are interconnected, specifically integrating various circuits of one or more processors represented by processor 901 and a memory represented by memory 903. The bus architecture can further integrally connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc. Since these are all well-known in the art, they will not be further described in this specification. The bus interface provides an interface. The transceiver 902 may be a plurality of components including a transmitter and a receiver, and provides a unit for communicating with various other devices via a transmission medium.

[0114] The communication device provided by an embodiment of the present invention can execute the method embodiments shown in FIG. 2 or FIG. 3 or FIG. 5 described above. Since their implementation principles and technical effects are similar, the description is omitted in this embodiment.

[0115] The steps of the methods or algorithms described by the disclosure of the present invention may be implemented by hardware or by a processor executing software instructions. The software instructions may include corresponding software modules. The software modules may be disposed in a random access memory (RAM), a flash memory, a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a register, a hard disk, a removable hard disk, a read-only optical disk, or any other form of storage medium well known in the art. For example, the storage medium is coupled to the processor, whereby the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium may be a component of the processor. The processor and the storage medium may be disposed in an application specific integrated circuit (ASIC). Also, the ASIC may be disposed within a core network interface device. Of course, the processor and the storage medium may exist in the core network interface device as individual components.

[0116] Those skilled in the art will recognize that in one or more of the above examples, the functions described in the present invention can be implemented by hardware, software, firmware, or any combination thereof. When the present application is implemented by software, these functions may be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. The computer-readable medium includes a computer storage medium and a communication medium, and the communication medium includes any medium that enables a computer program to be transmitted from one place to another. The storage medium may be any available medium accessible to a general-purpose or special-purpose computer.

[0117] According to the above specific embodiments, the object, technical solution and beneficial effects of the present invention have been further described in detail. The above content is only the specific embodiments of the present invention, which do not limit the protection scope of the present invention. It should be understood that all modifications, equivalent replacements, improvements, etc. made based on the technical solution of the present invention are included in the protection scope of the present invention.

[0118] It is obvious to those skilled in the art that the embodiments of the present invention can be provided as a method, a system or a computer program product. Therefore, the embodiments of the present invention may be in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. In addition, the embodiments of the present invention may adopt the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, magnetic disk storage devices, CD-ROMs, optical storage devices, etc.) containing computer-usable program code.

[0119] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the method, apparatus (system), and computer program product according to the embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be realized by computer program instructions. These computer program instructions may be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device for manufacturing a machine, so that the instructions executed by the processor of the computer or other programmable data processing device create means for realizing the functions specified in one or more flows of the flowchart and / or one or more blocks of the block diagram.

[0120] These computer program instructions may be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to operate in a particular manner, whereby the instructions stored in the computer-readable memory create a product including instruction means for realizing the functions specified in one or more flows of the flowchart and / or one or more blocks of the block diagram.

[0121] By loading these computer program instructions into a computer or other programmable data processing apparatus, a series of operational steps may be performed in the computer or other programmable data processing apparatus so as to generate computer-executed processing, whereby the instructions executed in the computer or other programmable device provide steps for realizing the functions specified in one or more flows of the flowchart and / or one or more blocks of the block diagram.

[0122] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, if these modifications and variations to the embodiments of the present invention are within the scope of the claims of the present invention and its equivalent technologies, the present invention is intended to include these changes and modifications.

Description of Reference Numerals

[0123] 600 Terminal 601 First Receiving Module 700 Terminal 701 Decision Module 800 Network Device 801 First Transmitting Module 900 Communication Device 901 Processor 902 Transmitting Device 903 Memory

Claims

1. determining a timeline of a multiplexed UCI of the HARQ-ACK feedback information and other information of the PDCCH based on a reception time of a PDCCH on which data is not scheduled, for indicating a secondary cell inactive; The step of determining a timeline of a multiplexed UCI of the HARQ-ACK feedback information and other information of the PDCCH based on a reception time of a PDCCH in which data is not scheduled, for a secondary cell idle indication, includes: determining a timeline of a multiplexed UCI of the HARQ-ACK feedback information and other information of the PDCCH based on a reception time of a last symbol of a PDCCH on which data is not scheduled and a second time interval for the secondary cell pause indication; The HARQ-ACK feedback method for a PDCCH in which data is not scheduled, wherein the second time interval is determined based on one or more of a number of sampling points of a fast Fourier transform (FFT) or an inverse fast Fourier transform (IFFT), a number of sampling points of a cyclic prefix (CP), a sampling period, and a subcarrier spacing (SCS) of the PDCCH.

2. The second time interval is determined by the following formula: [0010] where T represents a second time interval; μ corresponds to the smallest SCS configuration among the SCS configurations of the PDCCH, k is a constant and Tc is the basic time unit; The method of claim 1 , wherein the value of N is related to a value of an SCS of a PDCCH, and N is greater than 1.

3. If the SCS of the PDCCH is 15 kHz, then N=10; Or, If the SCS of the PDCCH is 30 kHz, then N is 12; Or, If the SCS of the PDCCH is 60 kHz, then N=22; Or, If the SCS of the PDCCH is 120 kHz, then N is 25; Or, If the SCS of the PDCCH is 15 kHz, then N=5; Or, If the SCS of the PDCCH is 30 kHz, then N=5.5; Or, The method of claim 2 , wherein if the SCS of the PDCCH=60 kHz, then N=11.

4. A determining module for determining a timeline of a multiplexed UCI of the HARQ-ACK feedback information and other information of the PDCCH according to a receiving time of a PDCCH on which no data is scheduled, for a secondary cell idle indication; The decision module: The secondary cell pause indication is also used to determine a timeline of a multiplexing UCI of the HARQ-ACK feedback information and other information of the PDCCH based on a reception time of the last symbol of the PDCCH on which data is not scheduled and a second time interval, A terminal, wherein the second time interval is determined based on one or more of a number of sampling points of a fast Fourier transform (FFT) or an inverse fast Fourier transform (IFFT), a number of sampling points of a cyclic prefix (CP), a sampling period, and a subcarrier spacing (SCS) of the PDCCH.

5. The second time interval is determined by the following formula: [0025] where T represents a second time interval; μ corresponds to the smallest SCS configuration among the SCS configurations of the PDCCH, k is a constant and Tc is the basic time unit; The terminal of claim 4 , wherein the value of N is related to a value of an SCS of a PDCCH, and N is greater than 1.

6. If the SCS of the PDCCH is 15 kHz, then N=10; Or, If the SCS of the PDCCH is 30 kHz, then N is 12; Or, If the SCS of the PDCCH is 60 kHz, then N=22; Or, If the SCS of the PDCCH is 120 kHz, then N is 25; Or, If the SCS of the PDCCH is 15 kHz, then N=5; Or, If the SCS of the PDCCH is 30 kHz, then N=5.5; Or, The terminal according to claim 5 , wherein if the SCS of the PDCCH is 60 kHz, then the N is 11.

7. A communications device comprising: a processor; a memory; and a program stored in the memory and executable by the processor, the program implementing steps of a HARQ-ACK feedback method for a non-data-scheduled PDCCH according to any one of claims 1 to 3 when executed by the processor.

8. A computer-readable storage medium having a computer program stored therein, the computer program being executed by a processor to implement steps of a method for HARQ-ACK feedback for non-data scheduled PDCCH as claimed in any one of claims 1 to 3.

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