CN114389771A

CN114389771A - Transmission method and device for uplink channel

Info

Publication number: CN114389771A
Application number: CN202011119099.9A
Authority: CN
Inventors: 司倩倩; 高雪娟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2022-04-22
Anticipated expiration: 2040-10-19
Also published as: CN114389771B; WO2022083495A1

Abstract

The invention discloses a transmission method and equipment of an uplink channel, wherein the method comprises the following steps: the terminal judges whether the PDU to be transmitted on the PUSCH overlapped with the PUCCH is at the starting time of the preparation process of PUCCH transmission; transmitting UCI on a PUSCH selected based on a preset rule if the PDU to be transmitted on the PUSCH overlapped with the PUCCH is the PDU to be transmitted; and if the PUSCH overlapped with the PUCCH does not have the PDU to be transmitted, transmitting the UCI on the PUCCH. The invention provides a solution for conflict between PUCCH and PUSCH, which can reduce the complexity of terminal side implementation and reduce the expenditure of PUCCH and terminal energy consumption.

Description

Transmission method and device for uplink channel

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting an uplink channel.

Background

In the current fifth generation New Radio (NR) communication system, for the same terminal, in order to avoid an excessive Peak-to-Average Power Ratio (PARR), simultaneous transmission of a Physical Uplink Control Channel (PUCCH) and a Physical Uplink Shared Channel (PUSCH) is not supported, and therefore, when resources of the PUCCH and the PUSCH overlap, the terminal may multiplex Uplink Control Information (UCI) carried by the PUCCH on the PUSCH for transmission.

At present, in an NR communication system, if a single-slot PUCCH and a plurality of single-slot PUSCHs are overlapped, when a plurality of overlapped PUSCHs and PUCCH both meet a timeline requirement, PUSCH selection is performed according to the following rule, and UCI contained in the PUCCH is transferred to the selected one PUSCH for transmission.

A first rule: preferentially selecting a PUSCH for transmitting the A-CSI if the PUSCHs for transmitting the A-CSI are included in the plurality of PUSCHs;

the second rule is as follows: if the PUSCHs with the corresponding PDCCH and the PUSCHs without the corresponding PDCCH transmission exist in the plurality of PUSCHs at the same time, the PUSCHs with the corresponding PDCCH are preferentially selected for transmission;

a third rule: if a plurality of PUSCHs meeting the second rule exist, selecting the PUSCHs according to the number sequence of the carrier where the PUSCHs are located, and preferentially selecting the PUSCHs transmitted on the carrier with smaller numbers;

the fourth rule is that: and if a plurality of PUSCHs subjected to time division multiplexing are overlapped with the same PUCCH on the same carrier, preferentially selecting the PUSCH with the earliest initial transmission symbol.

If the single-slot PUCCH and the multi-slot PUSCH are overlapped, in the overlapped slots, determining how to put UCI on the PUSCH for transmission according to the overlapping condition of the single-slot PUCCH and the single-slot PUSCH. Specifically, if the subcarrier interval configurations of the single-slot PUCCH and the multi-slot PUSCH are the same, UCI carried by the PUCCH is transferred to the overlapped PUSCH slot for transmission; if the subcarrier interval configuration of the single-slot PUCCH and the multi-slot PUSCH is different, UCI carried by the PUCCH is transferred to one or more PUSCH slots overlapped with the PUCCH for transmission. Here, the single-slot PUCCH/PUSCH means that one PUCCH/PUSCH occupies only transmission resources of one slot, and the multi-slot PUCCH/PUSCH means that one PUCCH/PUSCH occupies transmission resources of at least two slots in the case where repetitive transmission is configured.

When a PUCCH collides with a dynamically scheduled Physical Uplink Shared Channel (DG PUSCH), UCI is multiplexed onto the DG PUSCH for transmission, a MAC always sends a PDU to a Physical layer to guarantee the transmission of the UCI, and padding bits are sent when the PDU of the MAC has no data. When a PUCCH collides with a Configured scheduled Physical Uplink Shared Channel (CG PUSCH), there is no clear scheme currently available if there is no data transmission on the CG PUSCH.

Disclosure of Invention

At least one embodiment of the present invention provides a transmission method and device for an uplink channel, and provides a solution for collision between a PUCCH and a PUSCH, which can reduce implementation complexity at a terminal side and reduce overhead of PUCCH and terminal energy consumption.

In a first aspect, an embodiment of the present invention provides a method for transmitting an uplink channel, including:

the terminal judges whether the PDU to be transmitted on the PUSCH overlapped with the PUCCH is at the starting time of the preparation process of PUCCH transmission;

transmitting UCI on a PUSCH selected based on a preset rule if the PDU to be transmitted on the PUSCH overlapped with the PUCCH is the PDU to be transmitted;

and if the PUSCH overlapped with the PUCCH does not have the PDU to be transmitted, transmitting the UCI on the PUCCH.

With reference to the first aspect, in certain implementations of the first aspect, a time interval between a start time of the preparation process of the PUCCH transmission and the PUCCH start position is not less than T1, the T1 ═ N (N)₁+d_1,1)(2048+144)·κ2^-μ·T_C；

Or, a time interval between a starting time of the preparation process of the PUCCH transmission and the PUCCH starting position is not less than T2, where T2 ═ N (N)₂+d_2,1)(2048+144)·κ2^-μ·T_C；

Wherein:

d_1,1a preset value or a value configured for a higher layer; d_2,10 or 1; mu is the minimum value of the subcarrier spacing configuration of the preset related channel; n is a radical of₁Preset values corresponding to PDSCH processing capability and μ values; n is a radical of₂Is a preset value corresponding to the PUSCH processing capability and the μ value; κ is a predefined constant value; t is_CIs a predetermined basic timeUnits.

With reference to the first aspect, in some implementations of the first aspect, the determining whether there is a PDU to be transmitted on a PUSCH overlapping with the PUCCH includes:

if the MAC layer of the terminal sends the PDU corresponding to any one or more PUSCHs overlapped with the PUCCH to a physical layer, the PDU to be transmitted on the PUSCH overlapped with the PUCCH is judged;

and if the MAC layer of the terminal does not send the PDU corresponding to any PUSCH overlapped with the PUCCH to the physical layer, judging that the PUSCH overlapped with the PUCCH does not have the PDU to be transmitted.

With reference to the first aspect, in some implementations of the first aspect, the transmitting UCI on the PUCCH if there is no PDU to be transmitted on the PUSCH overlapping with the PUCCH includes:

transmitting UCI on the PUSCH carrying A-CSI or SP-CSI if there is no PDU to be transmitted on the PUSCH overlapping with the PUCCH but there is a PUSCH carrying A-CSI or SP-CSI in the PUSCH overlapping with the PUCCH;

and if the PUSCHs overlapped with the PUCCH do not have the PDU to be transmitted and the PUSCHs overlapped with the PUCCH do not have the PUSCHs carrying A-CSI or SP-CSI, transmitting the UCI on the PUCCH and not transmitting all the PUSCHs overlapped with the PUCCH.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes:

and if the MAC layer of the terminal does not transmit the PDU corresponding to any PUSCH overlapped with the PUCCH to the physical layer before the starting time, and the PUSCH overlapped with the PUCCH does not carry A-CSI or SP-CSI, the physical layer of the terminal does not expect to receive the PDU corresponding to the PUSCH overlapped with the PUCCH transmitted by the MAC layer after the starting time.

With reference to the first aspect, in certain implementations of the first aspect, the transmitting UCI on a PUSCH selected based on a preset rule if there is a PDU to be transmitted on a PUSCH overlapping with the PUCCH, includes:

before the starting time, if the MAC layer of the terminal transmits the PDU corresponding to the first PUSCH overlapped with the PUCCH to the physical layer but the first PUSCH is not a second PUSCH, the MAC layer of the terminal generates and transmits the PDU corresponding to the second PUSCH to the physical layer, wherein the second PUSCH is a PUSCH selected based on the preset rule and the second PUSCH is not a PUSCH only carrying A-CSI or SP-CSI.

With reference to the first aspect, in some implementations of the first aspect, if the second PUSCH does not have corresponding data to be transmitted, the MAC layer of the terminal sends, to a physical layer, a PDU including padding bits corresponding to the second PUSCH.

With reference to the first aspect, in certain implementations of the first aspect, the physical layer priority of the PUCCH is the same as the physical layer priority of the PUSCH.

With reference to the first aspect, in certain implementations of the first aspect, the preset rules include a first rule, a second rule, a third rule, and a fourth rule, wherein,

the first rule is: selecting a PUSCH for transmitting the A-CSI if the PUSCHs for transmitting the A-CSI are included in the plurality of PUSCHs;

the second rule is: selecting PUSCH transmission with a corresponding PDCCH if PUSCH transmission with the corresponding PDCCH and PUSCH transmission without the corresponding PDCCH exist in the plurality of PUSCHs at the same time;

the third rule is: and if a plurality of PUSCHs meeting the second rule exist, selecting the PUSCHs according to the number sequence of the carrier where the PUSCHs are located, and selecting the PUSCHs transmitted on the carrier with smaller numbers.

The fourth rule is: selecting a PUSCH with an earliest starting transmission symbol if the PUSCHs and the PUCCH are overlapped on the same carrier at times.

In a second aspect, an embodiment of the present invention provides a terminal, including a memory, a transceiver, and a processor;

a memory for storing a computer program;

a transceiver for transceiving data under control of the processor;

a processor for reading the computer program in the memory and performing the following operations:

at the starting time of the preparation process of PUCCH transmission, judging whether the PUSCH overlapped with the PUCCH has PDU to be transmitted or not;

With reference to the second aspect, in certain implementations of the second aspect, a time interval between a start time of the preparation process of the PUCCH transmission and the PUCCH start position is not less than T1, the T1 ═ N (N)₁+d_1,1)(2048+144)·κ2^-μ·T_C；

Wherein:

d_1,1a preset value or a value configured for a higher layer; d_2,10 or 1; mu is the minimum value of the subcarrier spacing configuration of the preset related channel; n is a radical of₁Preset values corresponding to PDSCH processing capability and μ values; n is a radical of₂Is a preset value corresponding to the PUSCH processing capability and the μ value; κ is a predefined constant value; t is_CIs a predetermined basic unit of time.

With reference to the second aspect, in some implementations of the second aspect, the determining whether there is a PDU to be transmitted on a PUSCH overlapping with the PUCCH includes:

With reference to the second aspect, in some implementations of the second aspect, the transmitting UCI on the PUCCH if there is no PDU to be transmitted on the PUSCH overlapping with the PUCCH includes:

With reference to the second aspect, in certain implementations of the second aspect, the processor is further configured to read the computer program in the memory and perform the following operations:

With reference to the second aspect, in certain implementations of the second aspect, the transmitting UCI on a PUSCH selected based on a preset rule if there is a PDU to be transmitted on a PUSCH overlapping with the PUCCH, includes:

With reference to the second aspect, in some implementations of the second aspect, if the second PUSCH has no corresponding data to be transmitted, the MAC layer of the terminal sends, to the physical layer, a PDU including padding bits corresponding to the second PUSCH.

With reference to the second aspect, in certain implementations of the second aspect, the physical layer priority of the PUCCH and the PUSCH is the same.

With reference to the second aspect, in certain implementations of the second aspect, the preset rules include a first rule, a second rule, a third rule, and a fourth rule, wherein,

In a third aspect, an embodiment of the present invention provides a terminal, including:

a judging unit, configured to judge, at a start time of a preparation process for PUCCH transmission, whether a PDU to be transmitted is on a PUSCH overlapped with the PUCCH;

a first processing unit, configured to transmit UCI on a PUSCH selected based on a preset rule if a PDU to be transmitted on a PUSCH overlapping with the PUCCH is to be transmitted;

and the second processing unit is used for transmitting UCI on the PUCCH if the PUSCH overlapped with the PUCCH does not have the PDU to be transmitted.

In a fourth aspect, embodiments of the present invention provide a computer storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above.

The embodiment of the invention has the beneficial effects that:

the embodiment of the invention changes the implementation mode of judging whether PDU transmission time exists on all PUSCHs which conflict with the PUCCH or not, but determines a proper time to judge according to the PUCCH transmission preparation process, so that if PDU transmission exists on the PUSCH which is overlapped with the PUSCH at the judgment time, the PUSCH can be selected to transmit UCI, otherwise, the UCI can be transmitted on the PUCCH. Compared with a mode that a terminal always prepares PUCCH transmission, the judging mode can ensure the time required by the transmission preparation of the PUCCH, and the embodiment of the invention can reduce the realization complexity of the terminal side, reduce or avoid the canceling process of the PUCCH transmission, and save PUCCH resources and terminal energy consumption overhead.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic diagram of a wireless communication system suitable for use in embodiments of the present invention;

FIG. 2 is a schematic diagram of an application scenario according to an embodiment of the present invention;

fig. 3 is a flowchart of a method for transmitting an uplink channel according to an embodiment of the present invention;

fig. 4 is a scene diagram illustrating an example of a transmission method of an uplink channel according to an embodiment of the present invention;

fig. 5 is a structural diagram of a terminal according to an embodiment of the present invention;

fig. 6 is another structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The terms "first," "second," and the like in the description and in the claims of the embodiments of the invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In the description and in the claims "and/or" means at least one of the connected objects.

The technology described herein is not limited to Long Time Evolution (LTE), LTE-Advanced (LTE-a) and 5G NR systems, and may also be used for other 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 new communication systems that will emerge in the future. The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.21(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes the NR system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications.

The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Referring to fig. 1, fig. 1 is a block diagram of a wireless communication system to which an embodiment of the present invention is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may also be referred to as a User terminal or a User Equipment (UE), where the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device, and the specific type of the terminal 11 is not limited in the embodiment of the present invention. The network device 12 may be a Base Station and/or a core network element, wherein the Base Station may be a 5G or later-version Base Station (e.g., a gNB, a 5G NR NB, etc.), or a Base Station in other communication systems (e.g., an eNB, a WLAN access point, or other access points, etc.), wherein the Base Station may be referred to as a node B, an evolved node B, an access point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, it should be noted that, in the embodiment of the present invention only takes the Base Station in the NR system as an example, but does not limit the specific type of base station.

The base stations may communicate with the terminals 11 under the control of a base station controller, which may be part of the core network or some of the base stations in various examples. Some base stations may communicate control information or user data with the core network through a backhaul. In some examples, some of the base stations may communicate with each other, directly or indirectly, over backhaul links, which may be wired or wireless communication links. A wireless communication system may support operation on multiple carriers (waveform signals of different frequencies). A multi-carrier transmitter can transmit modulated signals on the multiple carriers simultaneously. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal may be transmitted on a different carrier and may carry control information (e.g., reference signals, control channels, etc.), overhead information, data, and so on.

The base station may communicate wirelessly with the terminal 11 via one or more access point antennas. Each base station may provide communication coverage for a respective coverage area. The coverage area of an access point may be divided into sectors that form only a portion of the coverage area. A wireless communication system may include different types of base stations (e.g., macro, micro, or pico base stations). The base stations may also utilize different radio technologies, such as cellular or WLAN radio access technologies. The base stations may be associated with the same or different access networks or operator deployments. The coverage areas of different base stations (including coverage areas of base stations of the same or different types, coverage areas utilizing the same or different radio technologies, or coverage areas belonging to the same or different access networks) may overlap.

The communication links in a wireless communication system may comprise an Uplink for carrying Uplink (UL) transmissions (e.g., from terminal 11 to network device 12) or a Downlink for carrying Downlink (DL) transmissions (e.g., from network device 12 to terminal 11). The UL transmission may also be referred to as reverse link transmission, while the DL transmission may also be referred to as forward link transmission. Downlink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both. Similarly, uplink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both.

As described in the background art, in the NR system, when a PUCCH carrying UCI and one or more CG/DG PUSCHs overlap, a case of one or more CG/DG PUSCHs skipping (skipping) may occur, that is, part or all of the one or more CG/DG PUSCHs do not transmit a Protocol Data Unit (PDU). The problem that exists at present is how to multiplex transmission by UCI under the condition that part or all of one or more CG/DG PUSCHs do not transmit PDU is not clear.

When one PUCCH carrying UCI (such as HARQ-ACK and/or Channel State Information (CSI)) is overlapped with one or more CG/DG PUSCHs, in the case that part or all of the one or more CG/DG PUSCHs do not transmit PDUs, a possible scheme is to carry the UCI on a PUSCH selected based on a preset rule when any one PUSCH contains the PDU, and otherwise, transmit the UCI on the PUCCH and not transmit all PUSCHs overlapped with the PUCCH when all PUSCHs overlapped with the PUCCH do not contain the PDU. One problem with this approach is that the time at which the MAC sends the PDU may be later than the time at which the PUCCH starts to prepare, resulting in the terminal having no time to prepare PUCCH and transmit when it determines that no PDUs are carried on all PUSCHs.

As shown in fig. 2, the PUCCH overlaps PUSCH1 and PUSCH2, and assuming that UCI is transferred to PUSCH2 for transmission based on a preset rule, the terminal needs to start preparation of PUCCH transmission at time t1 at the latest, but needs to wait until time t2 to know whether there is PDU transmission on PUSCH2, so the terminal does not definitely prepare PUCCH at time t1, and if it is determined that there is no PDU on PUSCH2 at time t2, the terminal is not ready to transmit PUCCH any more. One solution to this is that the terminal always starts to prepare the PUCCH regardless of which PUSCH the PDU is on, but this may result in increased complexity of implementation of the terminal, and the MAC may not transmit the PDU until the terminal starts to transmit the PUCCH, resulting in the need to cancel PUCCH transmission, increasing the overhead of PUCCH resources and terminal power.

To solve at least one of the above problems, an embodiment of the present invention provides a transmission method for an uplink channel, as shown in fig. 3, when applied to a terminal side, the method including:

and step 31, the terminal judges whether the PDU to be transmitted on the PUSCH overlapped with the PUCCH is left at the starting time of the preparation process of PUCCH transmission.

Here, the preparation procedure for PUCCH transmission refers to a procedure in which the terminal prepares information transmitted on the PUCCH. In this process, the terminal generally performs processes such as modulation, coding, and mapping on the transmitted information. The start time of the preparation process is determined according to the time required for preparing the information to be transmitted on the PUCCH and the starting position of the PUCCH, so that it is ensured that the preparation for transmitting the information can be completed in the preparation process. In step 31, in order to ensure that the terminal has sufficient PUCCH transmission preparation time, the embodiment of the present invention does not wait until the time that it can determine whether there is PDU transmission on all PUSCHs, but performs the above determination on the premise of ensuring the time required for the preparation process of PUCCH transmission.

Specifically, a time interval between a start time of the preparation process of the PUCCH transmission and the PUCCH start position is generally not less than T1, where T1 ═ N (N)₁+d_1,1)(2048+144)·κ2^-μ·T_C；

OrA time interval between a start time of the preparation procedure for the PUCCH transmission and the PUCCH start position is not less than T2, (N) 2 ═ N₂+d_2,1)(2048+144)·κ2^-μ·T_C；

Wherein: d_1,1A preset value or a value configured for a higher layer, such as a value configured by a base station through higher layer signaling (e.g., RRC signaling); d_2,10 or 1.κ is a predefined constant value, such as 64. T is_CIs a predetermined basic unit of time, e.g. T_C＝1/Δf_max·N_f，Δf_max＝480*10³Hz，N_f＝4096。

μ is the minimum value of the subcarrier spacing configuration of the predetermined correlation channel. The related channels may specifically include: at least one channel of the PUCCH, a PDSCH corresponding to the PUCCH, a PUSCH overlapping the PUCCH, a PDCCH corresponding to the PUSCH, and a PDCCH carrying DCI scheduling the PUCCH.

For example, when the relevant channel includes the PUCCH, the PDSCH corresponding to the PUCCH, and the PDCCH carrying DCI scheduling the PUCCH, μ ═ 0 assuming that the subcarrier spacing of the PUCCH is configured to be 1, the subcarrier spacing of the PDSCH corresponding to the PUCCH is configured to be 0, and the subcarrier spacing of the PDCCH carrying DCI scheduling the PUCCH is configured to be 0. In the prior art, a specific subcarrier spacing is usually indicated by subcarrier spacing configuration, for example, the subcarrier spacing corresponding to when μ ═ 0 is 15kHz, the subcarrier spacing corresponding to when μ ═ 1 is 30kHz, and so on. For another example, the μ value may also be determined in relation to subcarrier spacing (SCS) configuration of other channels overlapped by the PUCCH, such as SCS of PUSCH overlapped by the PUCCH and SCS of PDCCH corresponding to PUSCH, and the minimum value is taken in SCS configuration of all related channels.

N₁Preset values corresponding to PDSCH processing capability and μ values; for example, a correspondence table is preset, and the correspondence between the preset value and "PUSCH processing capability and μ value" is stored in the table. Similarly, N₂Is a preset value corresponding to the PUSCH processing capability and the μ value;

when judging whether the PDU is to be transmitted on the PUSCH overlapped with the PUCCH, if the MAC layer of the terminal sends the PDU corresponding to any one or more PUSCHs overlapped with the PUCCH to the physical layer, judging the PDU to be transmitted on the PUSCH overlapped with the PUCCH; and if the MAC layer of the terminal does not send the PDU corresponding to any PUSCH overlapped with the PUCCH to the physical layer, judging that the PUSCH overlapped with the PUCCH does not have the PDU to be transmitted.

And step 32, if the PDU is to be transmitted on the PUSCH overlapped with the PUCCH, transmitting the UCI on the PUSCH selected based on a preset rule.

Here, the preset rules generally include a first rule, a second rule, a third rule, and a fourth rule, wherein,

the first rule is: and if the PUSCHs used for transmitting the A-CSI are contained in the plurality of PUSCHs, selecting the PUSCHs used for transmitting the A-CSI, namely selecting the PUSCHs used for transmitting the A-CSI to transmit the UCI.

The second rule is: if there is both a PUSCH transmission with a corresponding PDCCH and a PUSCH transmission without a corresponding PDCCH in a plurality of PUSCHs, a PUSCH transmission with a corresponding PDCCH is selected, i.e., a PUSCH with a corresponding PDCCH is selected to transmit UCI. Here, the correspondence between PDCCH and PUSCH refers to PUSCH transmission scheduled by PDCCH. That is, the PUSCH transmission corresponding to the PDCCH refers to PUSCH transmission scheduled by the PDCCH.

Here, the plurality of PUSCHs described in each of the above rules are PUSCHs that overlap with the PUCCH.

When UCI is transmitted on the PUSCH selected based on the preset rule, a first rule, a second rule, a third rule, and a fourth rule may be sequentially used to select among PUSCHs overlapping with the PUCCH until a certain PUSCH is selected. For example, after a PUSCH is selected using a first rule, the PUSCH is not selected again using a subsequent rule.

And step 33, if there is no PDU to be transmitted on the PUSCH overlapped with the PUCCH, transmitting the UCI on the PUCCH.

Here, the UCI may specifically include at least one of HARQ-ACK, CSI, and Scheduling Request (SR).

Through the steps, the embodiment of the invention changes the implementation mode of judging whether PDU transmission time exists on all PUSCHs which conflict with the PUCCH or not, but determines a proper time according to the PUCCH transmission preparation process, so that if PDU transmission exists on the PUSCH which is overlapped with the PUSCH at the judgment time, the PUSCH can be selected to transmit UCI, otherwise, the UCI can be transmitted on the PUCCH. Compared with a mode that a terminal always prepares PUCCH transmission, the judging mode can ensure the time required by the transmission preparation of the PUCCH, and the embodiment of the invention can reduce the realization complexity of the terminal side, reduce or avoid the canceling process of the PUCCH transmission, and save PUCCH resources and terminal energy consumption overhead.

Optionally, the physical layer priorities of the PUCCH and the PUSCH according to the embodiment of the present invention are the same. That is, in step 31, when determining whether there is a PDU to be transmitted on the PUSCH overlapping with the PUCCH, it is determined on the PUSCH overlapping with the PUCCH and having the same physical layer priority as the PUCCH. In step 32, UCI is transmitted on the PUSCH with the same physical layer priority as the PUCCH, which is selected based on a preset rule.

It should be noted that, in this embodiment, the PUSCH overlapping with the PUCCH may be a CG PUSCH or a DG PUSCH, and the embodiments of the present invention do not exclude any combination, for example, two PUSCHs overlapping with the PUCCH are both CG PUSCHs, or both the two PUSCHs are DG PUSCHs, or one PUSCH is a CG PUSCH, and the other PUSCH is a DG PUSCH. The PUSCH overlapping with the PUCCH described herein means that there is at least partial overlap between the PUCCH and the PUSCH in the time domain.

In the step 33, when it is determined that there is no PDU to be transmitted on the PUSCH overlapped with the PUCCH, UCI may be transmitted on the PUCCH. At this time, the embodiment of the present invention may further determine whether the PUSCH overlapped with the PUCCH has a bearer a-CSI or SP-CSI, and if there is no PDU to be transmitted on the PUSCH overlapped with the PUCCH, but there is a PUSCH carrying the a-CSI or SP-CSI in the PUSCH overlapped with the PUCCH, may transmit UCI on the PUSCH carrying the a-CSI or SP-CSI; and if there is no PDU to be transmitted on the PUSCH overlapped with the PUCCH and there is no PUSCH carrying A-CSI or SP-CSI in the PUSCH overlapped with the PUCCH, transmitting UCI on the PUCCH and not transmitting all PUSCHs overlapped with the PUCCH. Thus, the embodiment of the invention can preferentially multiplex the PUSCH carrying the A-CSI or the SP-CSI and overlapping with the PUCCH to transmit the UCI.

In the embodiment of the present invention, if the MAC layer of the terminal does not transmit the PDU corresponding to any PUSCH overlapping with the PUCCH to the physical layer before the start time of the preparation process for PUCCH transmission, and the PUSCH overlapping with the PUCCH does not carry a-CSI or SP-CSI, the physical layer of the terminal does not expect to receive the PDU corresponding to the PUSCH overlapping with the PUCCH, which is transmitted by the MAC layer, after the start time. Here, the fact that the physical layer of the terminal does not expect to receive the PDU corresponding to the PUSCH overlapping with the PUCCH, which is transmitted by the MAC layer, means that: after the starting time, the MAC layer of the terminal does not transmit the PDU corresponding to the PUSCH overlapped with the PUCCH to the physical layer, or after the starting time, if the physical layer of the terminal receives the PDU corresponding to the PUSCH overlapped with the PUCCH transmitted by the MAC layer, the PDU is ignored.

In the above step 32, if there is a PDU to be transmitted on the PUSCH overlapping with the PUCCH, when UCI is transmitted on the PUSCH selected based on a preset rule, there may be the following situations:

at the beginning of the preparation process of the PUCCH transmission, it is determined that a PDU to be transmitted on a PUSCH (for convenience of description, this PUCCH or these PUCCHs are referred to as a first PUSCH) overlapping with the PUCCH is to be determined, but a PUSCH selected based on the preset rule (for convenience of description, the selected PUCCH is referred to as a second PUSCH) is not the first PUSCH, and the following processing may be performed according to the embodiments of the present invention:

before the starting time, if the MAC layer of the terminal sends the PDU corresponding to the first PUSCH overlapped with the PUCCH to the physical layer but the first PUSCH is not the second PUSCH, the terminal transmits UCI on the second PUSCH, at the moment, the MAC layer of the terminal generates and sends the PDU corresponding to the second PUSCH to the physical layer, wherein the second PUSCH is the PUSCH selected based on the preset rule, and the second PUSCH is not the PUSCH only carrying A-CSI or SP-CSI. And if the second PUSCH does not have corresponding data to be transmitted, the MAC layer of the terminal may send the PDU including the padding bits corresponding to the second PUSCH to the physical layer.

The above embodiments provide a transmission method of an uplink channel, and for a terminal side, at a time when PUCCH preparation starts, determine whether there is a PDU on a PUSCH overlapping with the PUCCH, if there is the PDU, transmit UCI on a predefined PUSCH, and if there is no UCI, transmit UCI on the PUCCH, and the terminal does not expect to receive a MAC after the PUCCH preparation start time and transmits the PDU corresponding to the PUSCH overlapping with the PUCCH to a physical layer.

The following describes the implementation of the transmission method of the uplink channel according to the embodiment of the present invention. An example of the uplink channel transmission method to which the embodiment of the present invention is applied is further provided below with reference to the drawings.

Example (c):

as shown in fig. 4, PUCCH overlaps PUSCH1 and PUSCH2, and PUSCH1 and PUSCH2 are different PUSCHs on two carriers and can be transmitted simultaneously. The starting time of the PUCCH is t4, the time when PUCCH preparation is started is t1, the time when the MAC layer transmits the PDU corresponding to PUSCH1 to the physical layer at the latest is t3, and the time when the PDU corresponding to PUSCH2 is transmitted to the physical layer at the latest is t 2.

Case 1:

it is assumed that based on the preset rules, UCI will be transferred to PUSCH2 for transmission. At time t3, the MAC of the terminal sends a PDU corresponding to a PUSCH1 to a physical layer, the terminal judges that the PDU exists on a PUSCH overlapped with the PUCCH before the PUCCH is prepared at time t1, the terminal does not prepare the PUCCH and selects to multiplex UCI on the PUSCH2 for transmission, the MAC of the terminal needs to send the PDU of a PUSCH2 to the physical layer before time t2, and if the PUSCH2 does not have corresponding data, the MAC sends the PDU with filling bits to the physical layer, so that the UCI of the physical layer can carry out multiplexing transmission; the final terminal transmits PUSCH1 and PUSCH2 with UCI multiplexing transmitted on PUSCH 2.

Case 2: it is assumed that based on the preset rules, UCI will be transferred to PUSCH2 for transmission. Before time t1, the MAC of the terminal does not send a PDU to the physical layer, then at time t1, the terminal judges that no PDU exists on a PUSCH overlapped with the PUCCH before the PUCCH is prepared, and no A-CSI is carried on the PUSCH, the terminal starts to prepare the PUCCH, and the MAC of the terminal does not send the PDU of the PUSCH2 to the physical layer any more; the final terminal transmits PUCCH, not PUSCH1 and PUSCH 2.

Case 3: it is assumed that based on the preset rules, UCI will be transferred to PUSCH2 for transmission. Before time t1, the MAC of the terminal does not send a PDU to the physical layer, then at time t1, the terminal determines that there is no PDU on the PUSCH overlapped with the PUCCH before preparing the PUCCH, but the PUSCH2 carries the a-CSI transmission, then at time t1, the terminal does not prepare the PUCCH, and before time t2, the MAC may also send a PDU corresponding to the PUSCH2 to the physical layer; and finally, the terminal transmits PUSCH2, and UCI multiplexing is carried out on PUSCH2 for transmission.

Case 4: it is assumed that based on the preset rules, UCI will be transferred to PUSCH1 for transmission. Before time t1, the MAC of the terminal does not send a PDU to a physical layer, the terminal judges that no PDU exists on a PUSCH overlapped with the PUCCH before the PUCCH is prepared at time t1, but the PUSCH1 carries the A-CSI transmission, and the terminal multiplexes the UCI on the PUSCH1 for transmission; before time t2, the MAC can also send a PDU corresponding to the PUSCH2 to the physical layer; and finally, the terminal transmits PUSCH1, and if the MAC sends the PDU corresponding to the PUSCH2 to the physical layer, the terminal also transmits PUSCH2, and UCI multiplexing is carried out on the PUSCH1 for transmission.

In the present embodiment, T2 ═ N (N)₂+d_2,1)(2048+144)·κ2^-μ·T_CWherein d is assumed_2,1μ corresponds to the minimum of the subcarrier spacing of PDCCH and PUCCH carrying DCI scheduling PUSCH, assuming PUCCH and corresponding PDCCThe subcarrier intervals of H are all 15kHz, and mu is 0; n is a radical of₂Corresponding to the PUSCH processing capability and the μ value, N may be obtained by looking up a table in the 3GPP protocol TS38.214₂Assuming that the PUSCH processing capacity is level 1, N₂＝10；

Then T2 becomes (10+0) (2048+144) · 64 · 2^-0·T_C＝713.54us。

Various methods of embodiments of the present invention have been described above. An apparatus for carrying out the above method is further provided below.

Referring to fig. 5, an embodiment of the present invention provides a terminal 50, including:

a determining unit 51, configured to determine, at a start time of a preparation process for PUCCH transmission, whether there is a PDU to be transmitted on a PUSCH overlapped with the PUCCH;

a first processing unit 52, configured to transmit UCI on a PUSCH selected based on a preset rule if a PDU to be transmitted on a PUSCH overlapping with the PUCCH is to be transmitted;

a second processing unit 53, configured to transmit UCI on the PUCCH if there is no PDU to be transmitted on the PUSCH overlapping with the PUCCH.

Through the above units, the embodiment of the present invention provides a solution for PUCCH and PUSCH collision, which can reduce implementation complexity at the terminal side and reduce overhead of PUCCH and terminal energy consumption.

Optionally, a time interval between a starting time of the preparation process of the PUCCH transmission and the PUCCH starting position is not less than T1, where T1 ═ N (N)₁+d_1,1)(2048+144)·κ2^-μ·T_C；

Wherein:

d_1,1a preset value or a value configured for a higher layer; d_2,10 or 1; mu is the minimum value of the subcarrier spacing configuration of the preset related channel; n is a radical of₁Corresponding to PDSCH processing capability and mu valuePresetting a value; n is a radical of₂Is a preset value corresponding to the PUSCH processing capability and the μ value; κ is a predefined constant value; t is_CIs a predetermined basic unit of time.

Optionally, the determining unit is further configured to:

Optionally, the second processing unit 53 is further configured to:

Optionally, the terminal further includes:

a third processing unit to: and if the MAC layer of the terminal does not transmit the PDU corresponding to any PUSCH overlapped with the PUCCH to the physical layer before the starting time, and the PUSCH overlapped with the PUCCH does not carry A-CSI or SP-CSI, the physical layer of the terminal does not expect to receive the PDU corresponding to the PUSCH overlapped with the PUCCH transmitted by the MAC layer after the starting time.

Optionally, the first processing unit 52 is further configured to:

and if the second PUSCH does not have corresponding data to be transmitted, the MAC layer of the terminal sends the PDU containing the padding bits corresponding to the second PUSCH to a physical layer.

Optionally, the physical layer priorities of the PUCCH and the PUSCH are the same.

Optionally, the preset rules include a first rule, a second rule, a third rule and a fourth rule, wherein,

It should be noted that the terminal in this embodiment is an apparatus corresponding to the method shown in fig. 3, and the implementation manners in the above embodiments are all applied to the embodiment of the apparatus, and the same technical effects can be achieved. The terminal provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment, and can achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are not repeated here.

Referring to fig. 6, a schematic structural diagram of a terminal according to an embodiment of the present invention is shown, where the terminal 600 includes: a processor 601, a transceiver 602, a memory 603, a user interface 604 and a bus interface.

In this embodiment of the present invention, the terminal 600 further includes: program instructions stored 603 on the memory and executable on the processor 601.

The processor 601, when executing the program instructions, performs the following steps:

Wherein:

Optionally, the processor further implements the following steps when executing the program instructions:

In fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 601 and various circuits of memory represented by memory 603 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 602 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 604 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 may store data used by the processor 601 in performing operations.

It should be noted that the terminal in this embodiment is a terminal corresponding to the method shown in fig. 3, and the implementation manners in the above embodiments are all applicable to the embodiment of the terminal, and the same technical effects can be achieved. In the terminal, the transceiver 602 and the memory 603, and the transceiver 602 and the processor 601 may be communicatively connected through a bus interface, and the functions of the processor 601 may also be implemented by the transceiver 602, and the functions of the transceiver 602 may also be implemented by the processor 601. It should be noted that, the terminal provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

In some embodiments of the present invention, there is also provided a computer readable storage medium having stored thereon program instructions which, when executed by a processor, implement the steps of:

When executed by the processor, the program instructions can implement all the implementation manners in the transmission method applied to the uplink channel at the terminal side, and can achieve the same technical effect, and are not described herein again to avoid repetition.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the embodiments of the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for transmitting an uplink channel, comprising:

2. The method of claim 1,

a time interval between a start time of the preparation procedure for the PUCCH transmission and the PUCCH start position is not less than T1, the T1 ═ N₁+d_1,1)(2048+144)·κ2^-μ·T_C；

Wherein:

3. The method of claim 1, wherein the determining whether there are PDUs to be transmitted on a PUSCH overlapping with the PUCCH comprises:

4. The method of claim 1, wherein the transmitting the UCI on the PUCCH if there are no PDUs to be transmitted on a PUSCH overlapping with the PUCCH comprises:

5. The method of claim 1, further comprising:

6. The method of claim 1, wherein the transmitting the UCI on the PUSCH selected based on a preset rule if the PDU to be transmitted on the PUSCH overlapping with the PUCCH, comprises:

7. The method of claim 6, wherein the MAC layer of the terminal sends a PDU containing padding bits corresponding to the second PUSCH to a physical layer if the second PUSCH does not have corresponding data to transmit.

8. The method of claim 1, wherein the physical layer priority of the PUCCH and PUSCH is the same.

9. The method of claim 1, wherein the preset rules include a first rule, a second rule, a third rule, and a fourth rule, wherein,

the third rule is: if a plurality of PUSCHs meeting the second rule exist, selecting the PUSCHs according to the number sequence of the carrier where the PUSCHs are located, and selecting the PUSCHs transmitted on the carrier with smaller numbers;

10. A terminal comprising a memory, a transceiver, and a processor;

a memory for storing a computer program;

a transceiver for transceiving data under control of the processor;

11. The terminal of claim 10,

Wherein:

12. The terminal of claim 10, wherein the determining whether there are PDUs to be transmitted on a PUSCH overlapping with the PUCCH comprises:

13. The terminal of claim 10, wherein the transmitting UCI on PUCCH if there are no PDUs to be transmitted on PUSCH overlapping with the PUCCH, comprises:

14. The terminal of claim 10,

the processor is further configured to read the computer program in the memory and perform the following operations:

15. The terminal of claim 10, wherein the transmitting UCI on a PUSCH selected based on a preset rule if there is a PDU to be transmitted on a PUSCH overlapping with the PUCCH, comprises:

16. The terminal of claim 15, wherein the MAC layer of the terminal sends the PDU corresponding to the second PUSCH with padding bits to a physical layer if the second PUSCH has no corresponding data to transmit.

17. The terminal of claim 10, wherein the physical layer priority of the PUCCH and the PUSCH are the same.

18. The terminal of claim 10, wherein the preset rules include a first rule, a second rule, a third rule, and a fourth rule, wherein,

19. A terminal, comprising:

20. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 9.