WO2022233214A1 - Method for sending uplink control information uci and communication apparatus - Google Patents

Abstract

Provided in the present application are a method for sending uplink control information UCI and a communication apparatus; the method comprising: determining a first time domain unit of a PUSCH, the first time domain unit being configured to send a DMRS using a first number of resources or not send the DMRS (S801); when the first time domain unit does not overlap the time domain resources of a PUCCH, sending the PUSCH, and sending the DMRS over the first time domain unit using the first number of resources or determining not to send the DMRS (S802); and, when the first time domain unit overlaps the time domain resources of a PUCCH carrying UCI, carrying the UCI over the PUSCH, and sending the DMRS over the first time domain unit using a second number of resources (S803). By using the present application, when a time domain unit configured to transmit fewer DMRS or no DMRS in a PUSCH overlaps the time domain resources of a PUCCH, the UCI in the PUCCH is carried on the PUSCH, enhancing the channel estimation quality.

Description

A kind of uplink control information UCI sending method and communication device

This application claims the priority of the Chinese patent application with the application number 202110497267.6 and the application title "A method and communication device for sending uplink control information UCI", which was submitted to the China Patent Office on May 7, 2021, the entire contents of which are by reference Incorporated in this application.

technical field

The present application relates to the field of communication technologies, and in particular, to a method and a communication device for sending uplink control information UCI.

Background technique

Uplink control information (uplink control information, UCI) is used to assist the transmission of uplink and downlink data. In the new radio (NR) access technology, the physical uplink control channel (PUCCH) is used to carry the uplink control information UCI, and the physical uplink shared channel (PUSCH) can be used to carry the UCI, DMRS and uplink shared channel (UL-SCH). When the network equipment schedules PUCCH and PUSCH, PUCCH and PUSCH often overlap in the channel time domain. At this time, the UCI in the PUCCH can be multiplexed, that is, it can be understood that the UCI in the PUCCH is placed in the PUSCH. transmission.

In the case of gradual channel change, the coverage of network equipment can be enhanced through the uneven DMRS technology. That is, it can be understood that when the uneven DMRS technology is not used, the DMRS symbols on the PUSCH slots or repetitions are the same; when the uneven DMRS technology is used, the DMRS in the PUSCH part of the slot/repetition will be reduced. symbols, reducing the density of DMRS symbols in some slots/repetitions. In short, the uneven DMRS technology will lead to low-density DMRS, high-density DMRS or no DMRS in the PUSCH slot or repetition, so that the saved DMRS resources can be used for Transmit data and improve information transmission performance. However, in this scenario, the researchers found that if the time-domain resources of PUCCH overlapped with the low-density DMRS of PUSCH/slot/repetition without DMRS, the terminal device could not place the UCI on the PUCCH in the PUSCH for transmission, resulting in Channel estimation quality deteriorates.

SUMMARY OF THE INVENTION

The present application provides a method and a communication device for sending uplink control information UCI. When the PUCCH and PUSCH are configured to send fewer DMRS symbols or do not send repetitions of DMRS or time slots overlap, the UCI in the PUCCH is sent to the terminal side device for the terminal side device. The delivery scheme is carried on the PUSCH to improve the quality of channel estimation.

In a first aspect, the present application provides a method for sending uplink control information UCI. The method can be applied to terminal side equipment. Taking the method applied to terminal equipment as an example, the method includes: determining a first time domain of a physical uplink shared channel PUSCH unit, the first time domain unit is configured to send the demodulation reference signal DMRS with the first number of resources or not to send the DMRS; in the case where the first time domain unit and the time domain resources of the physical uplink control channel PUCCH do not overlap, send the DMRS PUSCH, and send the DMRS with the first number of resources on the first time domain unit or determine not to send the DMRS; when the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying UCI overlap, this The UCI is carried on the first time-domain unit of the PUSCH and sent, and the DMRS is sent on the first time-domain unit with a second resource quantity; the second resource quantity is greater than the first resource quantity.

Based on the UCI sending method of the first aspect, in the case where the first time domain unit of PUSCH overlaps the time domain resources of PUCCH, the resource configuration for sending DMRS in the first time domain unit is changed, and less DMRS is sent from the original configuration In the case of not sending DMRS symbols or not, it is changed to send more DMRS symbols, and the UCI of the PUCCH is carried on the first time domain unit, thereby ensuring the performance of the UCI in the PUCCH and improving the quality of channel estimation.

In a possible implementation, the terminal device determines a second time domain unit, and the interval between the second time domain unit and the first time domain unit is k×N time domain units, where k is a positive integer greater than or equal to 1 , N is a positive integer greater than or equal to 2, and the second time domain unit is a time domain unit for sending the DMRS with the second resource quantity. By implementing this possibility, while ensuring the performance of the UCI in the PUCCH, the position of the time domain unit configured to send the DMRS with the second number of resources after the first time-domain unit will be adjusted, which may reduce the amount of sending the DMRS with the second number of resources. The number of time domain units of the DMRS saves the transmission resources for transmitting the DMRS.

In a possible implementation, when the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying UCI overlap, if the interval between the first time domain unit and the third time domain unit is greater than the first time domain unit If the value is one, the UCI is carried on the first time domain unit of the PUSCH and sent, and the DMRS is sent on the first time domain unit with the second number of resources; the third time domain unit is the first time domain unit after the first time domain unit. A time-domain unit configured to transmit the DMRS with a second number of resources. By implementing this possibility, the flexibility of the terminal device to carry the UCI in the PUCCH through the PUSCH can be improved.

In a possible implementation, when the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying UCI overlap, if the interval between the first time domain unit and the fourth time domain unit is greater than the second time domain unit value, the UCI is carried on the first time-domain unit of PUSCH and sent, and the DMRS is sent on the first time-domain unit with the second number of resources; the fourth time-domain unit is the last one before the first time-domain unit that is configured with The second resource quantity transmits the time domain unit of the DMRS. By implementing this possibility, the flexibility of the terminal device to carry the UCI in the PUCCH through the PUSCH can be improved.

In a possible implementation, the first time-domain unit is the first time-domain unit in at least one time-domain unit of the PUSCH overlapping the PUCCH time-domain resource.

In a second aspect, the present application provides a method for sending uplink control information UCI. The method can be applied to terminal side equipment. Taking the method applied to terminal equipment as an example, the method includes: determining a first time domain of a physical uplink shared channel PUSCH unit, the first time domain unit is configured to send the demodulation reference signal DMRS with the first number of resources or not to send the DMRS; in the case where the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying UCI overlap, The UCI is carried on the third time-domain unit of the PUSCH for transmission; the third time-domain unit is the first time-domain unit after the first time-domain unit that is configured to send the DMRS with the second resource quantity, which is greater than the first time-domain unit. A quantity of resources.

Based on the UCI sending method of the second aspect, when the first time domain unit of PUSCH overlaps with the time domain resources of PUCCH, the UCI of PUCCH can be carried in the first time domain unit without increasing the number of resources for sending DMRS in the first time domain unit. Sending on PUSCH ensures the quality of channel estimation, and provides a feasible implementation of UCI sending for scenarios where transmission resources are limited.

In a possible implementation, if the interval between the first time domain unit and the third time domain unit is less than or equal to the first value, the UCI is carried on the third time domain unit of the PUSCH for transmission. By implementing this possibility, the flexibility of the terminal device to carry the UCI in the PUCCH through the PUSCH can be improved.

In a possible implementation, if the interval between the first time-domain unit and the fourth time-domain unit is greater than the second value, the UCI is carried on the third time-domain unit of the PUSCH for transmission, and the fourth time-domain unit is sent. The unit is the last time-domain unit configured to transmit the DMRS with the second resource quantity before the first time-domain unit. By implementing this possibility, the flexibility of the terminal device to carry the UCI in the PUCCH through the PUSCH can be improved.

In a possible implementation, the first time-domain unit is the first time-domain unit in at least one time-domain unit of the PUSCH overlapping the PUCCH time-domain resource. By implementing this possibility, the flexibility of the terminal device to carry the UCI in the PUCCH through the PUSCH can be improved.

In a third aspect, the present application provides a method for sending uplink control information UCI. The method can be applied to terminal side equipment. Taking the method applied to terminal equipment as an example, the method includes: determining a first time domain of a physical uplink shared channel PUSCH unit, the first time domain unit is configured to send the demodulation reference signal DMRS with the first resource quantity or not to send the DMRS; in the case where the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying UCI overlap , the UCI is carried on the first time domain unit of the PUSCH and sent, and the DMRS is sent on the first time domain unit with the configured first resource quantity or it is determined not to send the DMRS.

Based on the UCI sending method of the third aspect, when the first time domain unit of the PUSCH overlaps with the PUCCH time domain resources, there is no need to increase the number of resources for sending DMRS in the first time domain unit, and there is no need to delay sending the UCI in the PUCCH .

In a possible implementation, the position of the first resource element RE in the first time domain unit is determined according to the symbol position of the DMRS with the second resource quantity in the fifth time domain unit, where the fifth time domain unit is in the PUSCH A time domain unit configured to send the DMRS with a second resource quantity, where the second resource quantity is greater than the first resource quantity; the UCI is carried on the first RE in the first time domain resource for sending.

In a possible implementation, if the first time-domain unit of PUSCH is configured to send DMRS with the first number of resources, the UCI is carried in the second resource unit RE in the first time-domain unit of PUSCH, and is sent on the second RE of PUSCH UCI; the second RE includes at least one RE on the symbol following the DMRS symbol in the first time domain unit.

In a possible implementation, if the interval between the first time-domain unit and the fourth time-domain unit is less than or equal to the second value, the UCI is carried on the first time-domain unit of the PUSCH for transmission, and the fourth time-domain unit The unit is the last time-domain unit configured to transmit the DMRS with the second resource quantity before the first time-domain unit. By implementing this possibility, the flexibility of the terminal device to carry the UCI in the PUCCH through the PUSCH can be improved.

In a possible implementation, the first time-domain unit is the first time-domain unit in at least one time-domain unit of the PUSCH overlapping the PUCCH time-domain resource.

In a fourth aspect, the present application provides a method for sending uplink control information UCI. The method can be applied to a terminal side device. Taking the method applied to a terminal device as an example, the method includes: determining a first type of physical uplink control channel PUCCH and a first type of physical uplink control channel PUCCH and a third The second type of PUCCH; in the case where the first time domain unit of the physical uplink shared channel PUSCH overlaps with the time domain resources of the PUCCH, the PUCCH is determined to be the second type of PUCCH, and the first aspect, the second aspect or the third The method of any one of the aspects.

Based on the method described in the fourth aspect, the terminal device classifies the PUCCH overlapping with the first time domain unit of the PUSCH, and further, the terminal device determines, according to the specific class of the PUCCH, the specific transmission mode of the UCI in the PUCCH carried in the PUSCH to send the UCI , thereby improving the adaptability of the UCI sending method and the PUCCH type.

In a fifth aspect, the present application provides a method for sending uplink control information UCI. The method can be applied to terminal side equipment. Taking the method applied to terminal equipment as an example, the method includes: determining a first type of physical uplink control channel PUCCH and a first type of physical uplink control channel PUCCH and a first Two types of PUCCH; in the case where the time domain resources of the first type PUCCH overlap with the first time domain unit of the physical uplink shared channel PUSCH, perform the method described in any one of the first aspects; when the second type PUCCH When the domain resource overlaps with the first time domain unit of the physical uplink shared channel PUSCH, the method described in any one of the second aspect or the third aspect is performed.

For the beneficial effects of the method based on the fifth aspect, reference may be made to the aforementioned beneficial effects of the method based on the fourth aspect, which will not be repeated here.

In a sixth aspect, the present application provides a method for sending uplink control information UCI. The method can be applied to terminal side equipment. Taking the method applied to terminal equipment as an example, the method includes: determining a first type of physical uplink control channel PUCCH and a first Two types of PUCCH; in the case where the time domain resources of the first type PUCCH overlap with the first time domain unit of the physical uplink shared channel PUSCH, perform any one of the methods in the first aspect or the second aspect; in the second type PUCCH In the case that the time domain resource of PUSCH overlaps with the first time domain unit of the physical uplink shared channel PUSCH, perform the method described in any one of the third aspect.

For the beneficial effects of the method based on the sixth aspect, reference may be made to the aforementioned beneficial effects of the method based on the fourth aspect or the fifth aspect, which will not be repeated here.

In a seventh aspect, the present application provides a method for sending uplink control information UCI. The method can be applied to terminal side equipment. Taking the method applied to terminal equipment as an example, the method includes: determining a first type of physical uplink control channel PUCCH and a first type of physical uplink control channel PUCCH and a third Two types of PUCCH; in the case where the time domain resources of the first type PUCCH overlap with the first time domain unit of the physical uplink shared channel PUSCH, perform the method according to any one of the first aspect or the second aspect; in the second In the case where the time-domain resources of the type PUCCH overlap with the first time-domain unit of the physical uplink shared channel PUSCH, if the first time-domain unit is configured to transmit the demodulation reference signal DMRS with the first number of resources, perform as in the third aspect. Any one of the methods; in the case where the time domain resource of the second type PUCCH overlaps with the first time domain unit of the physical uplink shared channel PUSCH, if the first time domain unit is configured not to send DMRS, perform as first The method of any one of the aspect or the second aspect. For the beneficial effects of the method based on the sixth aspect, reference may be made to the aforementioned beneficial effects of the method based on the fifth aspect, which will not be repeated here.

For the beneficial effects of the method based on the seventh aspect, reference may be made to the aforementioned beneficial effects of the method based on the fourth aspect, which will not be repeated here.

In a possible implementation, the first type of PUCCH is a PUCCH corresponding to the first physical downlink shared channel PDSCH with a hybrid response HARQ ACK, and the first PDSCH is a PDSCH that carries downlink control information scheduled by DCI;

or,

The first type of PUCCH is any one of the PUCCH of the HARQ ACK corresponding to the first PDSCH and the PUCCH of the HARQ ACK corresponding to the semi-persistent scheduling SPS PDSCH;

or,

The first type of PUCCH is any one of the PUCCH of the HARQ ACK corresponding to the first PDSCH and the PUCCH of the HARQ ACK corresponding to the DCI;

or,

The first type of PUCCH is any one of the PUCCH corresponding to the HARQ ACK of the first PDSCH, the PUCCH carrying the HARQ ACK corresponding to the SPS PDSCH, and the PUCCH carrying the HARQ ACK corresponding to the DCI.

In a possible implementation, the PUCCH of the second type is at least one PUCCH other than the PUCCH of the first type.

In an eighth aspect, the present application provides a communication device, which may be a device in a terminal device, or a device that can be matched and used with the terminal device. Wherein, the communication device may also be a chip system. The communication device may perform the method described in any one of the first to seventh aspects. The functions of the communication device may be implemented by hardware, or by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above-mentioned functions. The unit may be software and/or hardware. For operations and beneficial effects performed by the communication device, reference may be made to the methods and beneficial effects described in the first to seventh aspects above, and repeated details will not be repeated.

In a ninth aspect, a communication apparatus is provided, and the communication apparatus may be the terminal device in the above method embodiments, or a chip provided in the terminal device. The communication device includes a communication interface, a processor, and optionally, a memory. The memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface, and when the processor executes the computer program or instructions, the communication apparatus executes the method executed by the terminal device in the above method embodiments.

In a tenth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium is used to store computer-executable instructions, when the computer-executable instructions are executed, as described in the first to seventh aspects The method in which the terminal device executes the method is implemented.

In an eleventh aspect, the present application provides a computer program product including a computer program, when the computer program is executed, the method performed by a terminal device in the methods described in the first to seventh aspects is realized.

Description of drawings

FIG. 1 is a schematic structural diagram of a mobile communication system provided by the application;

2a is a schematic diagram of a PUSCH repetition provided by the application;

Figure 2b is a schematic diagram of another PUSCH repetition provided by the application;

2c is a schematic diagram of another PUSCH repetition provided by the application;

2d is a schematic diagram of another PUSCH repetition provided by the application;

2e is a schematic diagram of another PUSCH repetition provided by the application;

FIG. 2f is a schematic diagram of a kind of PUSCH provided by the application that adopts the non-uniform DMRS technology to send DMRS;

3 is a schematic diagram of another kind of PUSCH provided by the present application that adopts the uneven DMRS technology to send DMRS;

4 is a schematic diagram of another kind of PUSCH provided by the present application that adopts the uneven DMRS technology to send DMRS;

Fig. 5a is the schematic diagram that the PUCCH provided by this application and a slot/PUSCH repetition overlap;

Fig. 5b is a schematic diagram of overlapping PUCCH and multiple slot/PUSCH repetitions provided by this application;

6 is a schematic flowchart of mapping UCI to PUSCH provided by the present application;

7a is a schematic diagram of a rule for mapping UCI to PUSCH provided by the application;

FIG. 7b is a schematic diagram of another UCI mapping rule to PUSCH provided by this application;

FIG. 7c is a schematic diagram of another UCI mapping rule to PUSCH provided by this application;

8a is a schematic flowchart of a method for sending uplink control information UCI provided by the present application;

8b is a schematic diagram of a method for sending uplink control information UCI on PUSCH provided by the application;

FIG. 8c is a schematic diagram of another method for sending uplink control information UCI on PUSCH provided by this application;

9a is a schematic flowchart of another method for sending uplink control information UCI provided by the present application;

FIG. 9b is a schematic diagram of another method for sending uplink control information UCI on PUSCH provided by this application;

10a is a schematic flowchart of another method for sending uplink control information UCI provided by the present application;

FIG. 10b is a schematic diagram of another method for sending uplink control information UCI on PUSCH provided by this application;

Figure 10c is a schematic diagram of another method for sending uplink control information UCI on PUSCH provided by this application;

11a is a schematic flowchart of another method for sending uplink control information UCI provided by the present application;

11b is a schematic diagram of a rule for mapping uplink control information UCI on the first time domain unit of PUSCH provided by the application;

11c is a schematic diagram of another kind of uplink control information UCI mapping rule provided by the application on the first time domain unit of PUSCH;

FIG. 11d is a schematic diagram of a rule for mapping another uplink control information UCI on the first time domain unit of the PUSCH provided by this application;

12a is a schematic flowchart of another method for sending uplink control information UCI provided by the present application;

FIG. 12b is a schematic diagram of another method for sending uplink control information UCI on PUSCH provided by this application;

12c is a schematic diagram of another method for sending uplink control information UCI on PUSCH provided by this application;

13 is a schematic structural diagram of a communication device provided by the application;

FIG. 14 is a schematic structural diagram of another communication apparatus provided by an embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings.

The terms "first" and "second" in the description, claims and drawings of the present application are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of operations or units is not limited to the listed operations or units, but optionally also includes unlisted operations or units, or optionally also includes For other operations or units inherent to these processes, methods, products or devices.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

In this application, "at least one (item)" means one or more, "plurality" means two or more, "at least two (item)" means two or three and three In the above, "and/or" is used to describe the corresponding relationship between corresponding objects, indicating that there can be three kinds of relationships, for example, "A and/or B" can mean: only A exists, only B exists, and both A and B exist three A case where A and B can be singular or plural. The character "/" generally indicates that the corresponding object before and after is an "or" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (a) of a, b or c, can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c" ", where a, b, c can be single or multiple.

In order to better understand the solution provided by this application, the system architecture of this application is first introduced below:

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a mobile communication system provided by the present application. As shown in FIG. 1 , the system rack includes terminal equipment (ie, terminal equipment 130 and terminal equipment 140 in FIG. 1 ), access network equipment (ie, access network equipment 120 in FIG. 1 ) and core network equipment (ie, in FIG. 1 ) core network equipment 110). It should be known that the terminal device is wirelessly connected to the access network device, and the access network device is wirelessly or wiredly connected to the core network device. The core network device and the access network device can be independent and different physical devices, or the functions of the core network device and the logical function of the access network device can be integrated on the same physical device, or they can be integrated on one physical device. The functions of part of the core network equipment and part of the access network equipment are described. Terminal equipment can be fixed or movable. FIG. 1 is just a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1 . The embodiments of the present application do not limit the number of core network devices, access network devices, and terminal devices included in the mobile communication system.

The terminal equipment, the access network equipment, and the core network equipment involved in FIG. 1 will be described in detail below.

1. Terminal equipment

Terminal equipment, also referred to as user equipment (UE), includes equipment that provides voice and/or data connectivity to users, and may include, for example, a handheld device with wireless connectivity, or a processing device connected to a wireless modem. The terminal equipment may communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN. The terminal equipment may include wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, vehicle-to-everything (V2X) terminal equipment, machine-to-machine/machine-type communication ( machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, Internet of things (Internet of things, IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (access point, AP) ), remote terminal, access terminal, user terminal, user agent, or user equipment, etc. For example, these may include mobile telephones (or "cellular" telephones), computers with mobile terminal equipment, portable, pocket-sized, hand-held, computer-embedded mobile devices, and the like. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (personal digital assistants), PDA), etc. Also includes constrained devices, such as devices with lower power consumption, or devices with limited storage capacity, or devices with limited computing power, etc. For example, it includes information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), and laser scanners.

2. Access network equipment

An access network device is a node or device that accesses a terminal device to a wireless network. An access network device includes, but is not limited to, a new generation base station (gNB), an evolved node B ( evolved node B, eNB), next generation eNB (ng-eNB), wireless backhaul equipment, home base station ((home evolved nodeB, HeNB) or (home node B, HNB)), baseband unit (base Band unit, BBU), transmitting and receiving point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center, etc.

3. Core network equipment

Taking the 5G communication system as an example, the core network equipment may include an access and mobility management function (AMF) network element, a session management function (SMF) network element, and a user plane function (user plane function). function, UPF) network element, policy control function (policy control function, PCF) network element, unified data management (unified data management, UDM) network element, application function (application function, AF) network element, etc.

The AMF network element is the control plane network element provided by the operator's network. It is responsible for the access control and mobility management of the terminal equipment accessing the operator's network, such as the management of mobility status, the allocation of user temporary identities, and the authentication and authorization of users. .

The SMF network element is a control plane network element provided by the operator network, and is responsible for managing the protocol data unit (protocol data unit, PDU) session of the terminal device. A PDU session is a channel for transmitting PDUs. Terminal devices need to communicate PDUs with the DN through the PDU session. The PDU session is established, maintained and deleted by the SMF network element. SMF network elements include session management (such as session establishment, modification and release, including tunnel maintenance between UPF and RAN), selection and control of UPF network elements, service and session continuity (SSC) mode selection, Session related functions such as roaming.

The UPF network element is the gateway provided by the operator, and is the gateway for the communication between the operator's network and the DN. UPF network elements include user plane-related functions such as packet routing and transmission, packet detection, quality of service (QoS) processing, legal interception, upstream packet detection, and downstream packet storage.

The PCF network element is a control plane function provided by the operator, and is used to provide the SMF network element with the policy of the PDU session. The policies may include charging-related policies, QoS-related policies, authorization-related policies, and the like.

The AF network element is a functional network element that provides various capability opening services, provides an interface for external third-party servers to interact with the core network, and can interact with the core network through it, including the ability to interact with the policy management framework for policy management.

In addition, although not shown, the core network equipment may also include other possible network elements, such as network exposure function (NEF) network elements, unified data repository (UDR) network elements, network data analysis functions (network data analytics function, NWDAF) network element.

It should also be known that the embodiments of the present application may be applicable to downlink signal transmission, may also be applicable to uplink signal transmission, and may also be applicable to device to device (device to device, D2D) signal transmission. For downlink signal transmission, the sending device is an access network device, and the corresponding receiving device is a terminal device. For uplink signal transmission, the sending device is a terminal device, and the corresponding receiving device is an access network device. For D2D signal transmission, the sending device is a terminal device, and the corresponding receiving device is also a terminal device. The transmission direction of the signal in the embodiments of the present application is not limited.

The access network equipment and the terminal equipment and between the terminal equipment and the terminal equipment can communicate through the licensed spectrum (licensed spectrum), can also communicate through the unlicensed spectrum (unlicensed spectrum), and can also communicate through the licensed spectrum and license-free spectrum at the same time. spectrum for communication. Communication between wireless access network equipment and terminal equipment and between terminal equipment and terminal equipment can be carried out through the spectrum below 6G, or through the spectrum above 6G, and can also use the spectrum below 6G and above 6G at the same time. to communicate. The embodiments of the present application do not limit the spectrum resources used between the radio access network device and the terminal device.

Next, the related technical features involved in the embodiments of the present application will be explained again. It should be noted that these explanations are for the purpose of making the embodiments of the present application easier to understand, and should not be regarded as limitations on the protection scope claimed by the present application.

1. Subcarrier spacing (SCS)

In a new radio (new radio, NR) system, there are 5 sub-carrier spacings. Please refer to Table 1. Table 1 is the size of the 5 sub-carrier spacing in the NR system.

Table 1

Serial number μ	subcarrier spacing
0	15KHz
1	30KHz
2	60KHz
3	120KHz
4	240KHz

2. Dual connectivity (DC)

The UE performs a DC connection, that is, the UE establishes a link with multiple cells, and these cells can be divided into two groups: a master cell group (MCG) and a secondary cell group (SCG). In other words, if the UE does not have a DC connection, the UE only connects with the MCG.

Among them, the MCG includes a primary cell (primary cell, PCell) and a secondary cell (secondary cell, SCell), and the PCell and SCell are combined by carrier aggregation (carrier aggregation, CA) technology; and the SCG also includes a primary cell (primary cell, SCell) secondary cell, PSCell) and secondary cell (secondary cell, SCell), PSCell and SCell are also combined through CA technology.

3. Cell and carrier

The coverage area of each network device can be divided into one or more cells. In the current NR standard, a cell can be configured with one downlink carrier, and optionally, at least one uplink carrier. It should be understood that a cell is described from the perspective of resource management or mobility management by a high layer (for example, a protocol layer above the physical layer, such as a radio resource control layer, a medium access control layer, etc.). A cell is a generic name, and for a terminal device, the cell that serves it is called a serving cell. The cell involved in this application may also be a serving cell.

4. Bandwidth part (BWP)

A BWP in NR is a segment of contiguous frequency resources on a carrier. When a BWP is configured and activated, the BWP is called an activated BWP. In the communication protocol, a UE can only have one downlink activated BWP on one downlink carrier, and only one uplink activated BWP on one uplink carrier. The uplink data and control information sent by the UE are sent in the uplink activated BWP, and the downlink data and control information are received in the downlink activated BWP.

5. Transmission structure

5.1. Time Domain Structure

In the NR standard, the transmitted frame has a duration of 10ms, and each frame is divided into 10 subframes, each of which is 1ms long. Each subframe is further divided into several time slots (slots), and each slot is composed of 14 orthogonal frequency-division multiplexing (orthogonal frequency-division multiplexing, OFDM) symbols. The specific time length of each slot is determined by the parameter set. For example, when the SCS is 15 kHz, a slot is 1 ms long; when the subcarrier spacing is 30 kHz, a slot is 0.5 ms long. It can be understood that the larger the subcarrier spacing is, the shorter the duration of the OFDM symbol and the smaller the slot.

In NR, the slot used for uplink data transmission is recorded as U slot, the slot used for downlink transmission is recorded as D slot, and the slot used for both uplink transmission and downlink transmission is recorded as S slot. In a typical time division duplex (time division duplex, TDD) system time slot configuration format, including DDDSU, DDDSUDDSUU, DDDDDDDDUU and so on.

It should be noted that a time slot may include downlink symbols (downlink symbols), uplink symbols (uplink symbols), and flexible symbols (flexible symbols), and downlink symbols cannot be used for uplink transmission; uplink symbols cannot be used for downlink transmission; and Flexible symbols can be used for both downlink and uplink transmissions.

5.2, frequency domain structure

A resource element (RE) is defined in NR as a subcarrier on an OFDM symbol, and RE is the smallest physical unit in the NR standard. The 12 consecutive subcarriers in the frequency domain are called a resource block (RB). Although one RB is fixed to include 12 subcarriers, due to different subcarrier intervals, the actual bandwidth occupied by different RBs in the frequency domain is not necessarily the same.

6. Upstream channel and upstream signal

Uplink channels in NR include: physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH), and physical random access channel (PRACH).

Uplink signals in NR include: sounding reference signal (SRS), demodulation reference signal (DMRS), and phase-tracking reference signal (PTRS).

6.1. Physical uplink shared channel (PUSCH)

6.1.1. Transmission of PUSCH

There are three types of PUSCH transmission in NR: PUSCH transmission based on dynamic scheduling, configured grant (CG) type 1 (Type 1), and configured grant (CG) type 2 (Type2).

1) PUSCH transmission based on dynamic scheduling

In this type of transmission, each PUSCH transmission is scheduled by the physical layer instructing downlink control information (DCI). In this kind of transmission, the UE performs one PUSCH transmission after receiving one uplink scheduling.

2) Configure License Type 1

This kind of transmission is semi-static scheduling, semi-static scheduling, receiving high-level configuration (including the high-level parameter configuredGrantConfig of rrc-ConfiguredUplinkGrant), and not receiving physical layer indication DCI, which is called "configured uplink grant" in the protocol. In this type of transmission, the upper layer configures some semi-persistent resources. If the user equipment (UE) has uplink data to send, it can use these resources to send the PUSCH; if there is no uplink data to send, it does not send data.

3), configure license Type 2

In this kind of transmission, the high-level configuration (not including the high-level parameter configuredGrantConfig of rrc-ConfiguredUplinkGrant) is received first, and then the physical layer instructs the DCI to activate or deactivate, which is called "configured uplink grant based on L1signalling" in the protocol. In this type of transmission, the upper layer configures some semi-persistent resources, which are then activated/deactivated by physical layer signaling: when activated, the behavior is similar to that configured to allow Type1PUSCH transmission; when not activated, these resources cannot be used.

6.1.2. Two repetition types of PUSCH

A PUSCH can contain multiple repetitions, and each repetition transmits the same transport block (TB), and the redundancy versions can be the same or different. PUSCH has two repetition types, repetition type A and repetition type B.

1) Repeat Type A

As shown in Figure 2a, there are K transmissions in repetition type A, and K transmission opportunities correspond to consecutive K time slots (slots), and a repetition of PUSCH is transmitted in each slot. The start symbol and duration are the same.

In time-division duplexing (TDD) mode, in the transmission of repetition type A, if any symbol in a PUSCH repetition resource is a downlink symbol, or a PUSCH time-frequency resource and cancellation indication (CI) ) indicates that the canceled resources overlap, or overlap with the high-priority PUSCH/PUCCH, and the PUSCH is repeatedly canceled this time. For example, as shown in FIG. 2b, when the resources of the second PUCCH repetition include downlink symbols, the transmission of the second PUSCH repetition is canceled.

However, in some cases, it may be too late to cancel. For example, after a PUSCH repeatedly starts sending, the CI is parsed, and it is found that there are overlapping resources, so only the subsequent part of the sending can be canceled. As shown in Figure 2c, after the second PUSCH repetition has sent some models, the cancellation indication (ie CI in Figure 2c) is parsed at time t0. CI is the PUSCH resource and the CI indicates that the cancellation resource has an overlapping 1 symbol, and the repetition It was cancelled after the second part of the signal was sent.

2) Repeat Type B

As shown in FIG. 2d , there are K transmissions in the transmission of repetition type B, and each transmission corresponds to L consecutive symbols, and the symbols corresponding to the K transmissions are consecutive.

In TDD mode, some symbols are considered invalid symbols for PUSCH repetition type B transmission. For PUSCH repetition type B, after determining the invalid symbols for each transmission of K nominal transmissions of PUSCH repetition type B transmission, the remaining symbols are considered as potentially valid symbols. If the potentially valid symbols in a nominal repeat are greater than 0, the nominal repeat contains one or more actual repeats, each actual repeat containing a contiguous set of potentially valid symbols within a slot (that is, encountering a slot boundary (Slot boundary) or invalid symbols, the repetition is classified as two actual repetitions). Except for L=1, the actual repetition of a single symbol is not sent. As shown in Figure 2e, the 4 nominal repetitions are split into 6 actual repetitions due to invalid symbols and slot boundaries.

Such as repetition type A, when any symbol in an actual repeated resource of repetition type B is a downlink symbol, or the PUSCH time-frequency resource overlaps with the resource indicated by CI to cancel, or overlaps with the high-priority PUSCH/PUCCH, this The secondary PUSCH repeats the cancellation of transmission. The specific operation and repetition type A will not be repeated here.

6.1.3. Non-uniform DMRS technology

In NR, uplink and downlink transmission can perform multiple repetitions of transmission, these repetitions transmit the same information, and each repetition has one or more DMRSs. For example, as shown in Figure 2f, each black box represents a repetition (repetition), the shaded part is a DMRS, one DMRS in each repetition in (2a) of Figure 2f, and one DMRS in each repetition in (2b) of Figure 2f 2 DMRS.

DMRS can be divided into high-density DMRS (that is, the DMRS is sent with the second number of resources in the repetition mentioned later) and low-density DMRS (that is, the DMRS is sent with the first number of resources in the repetition mentioned later), wherein, High-density DMRS occupies more frequency domain resources or occupies more OFDM symbols than low-density DMRS. That is, the high-density DMRS has any of the following characteristics compared with the low-density DMRS: the frequency domain resources are the same, and there are several more OFDM symbols on the time domain resources; or, the time domain resources are the same, and there are several more resource elements on the frequency domain resources. RE); or, there are several more OFDM symbols on the time domain resources, and at the same time there are several more REs on the frequency domain resources.

In the case of a gradual channel change, the non-uniform DMRS technology can be used to improve the coverage of network equipment. The uneven DMRS technology refers to sending high-density DMRS on some repetitions and sending low-density DMRS on some repetitions. For example, please refer to FIG. 3. In FIG. 3, the first repetition and the third repetition send high-density DMRS, and the second and fourth repetitions send low-density DMRS. It can be seen that the non-uniform DMRS technology (the saved DMRS resources can be used for data transmission, thereby improving information transmission performance and improving the coverage of network equipment.

A special technology in the uneven DMRS technology is the DMRS less technology. The DMRS less technology means that no DMRS is sent in some repetitions. Because the channel is gradually changing, its channel estimation can be obtained by using the DMRS in the previous repetition. As shown in Figure 4, the first and third repetitions have DMRS, and the second and fourth repetitions have no DMRS.

6.2. Physical uplink control channel (PUCCH)

PUCCH is used to carry uplink control information (uplink control information, UCI). There are 5 formats (formats) of PUCCH. For details of the number of UCI bits carried by each PUCCH format, see Table 2.

Table 2

It should be known that a short PUCCH cannot perform a repetition, and a long PUCCH can perform a repetition in the time domain, and the number of repetitions can be 2/4/8 times. PUCCH resources may be periodic (periodic), semi-persistent (semi-persistent), or dynamic scheduling (dynamic scheduling) with PDSCH.

6.3, demodulation reference signal (demodulation reference signal, DMRS)

The uplink DMRS is transmitted along with PUCCH and PUSCH, and its time-frequency resources occupy a part of PUCCH or PUSCH.

6.4, phase tracking reference signal (phase-tracking reference signal, PTRS)

The uplink PTRS is transmitted along with the PUSCH, and its time-frequency resources occupy a part of the PUSCH.

7. Uplink control information (UCI)

UCI is used to assist the transmission of uplink and downlink data. The types of UCI include: hybrid automatic repeat request acknowledgement (HARQ-ACK), channel state information (CSI) and scheduling request (scheduling request, SR). Among them, HARQ-ACK includes positive acknowledgement (acknowledgement, ACK) and negative acknowledgement (negative acknowledgement, NACK); CSI includes CSI part 1 and CSI part 2 two parts. CSI reports may be periodic, semi-persistent, or aperiodic. The aperiodic CSI report can be triggered and sent on the PUSCH; if the PUSCH contains uplink data, the UE multiplexes the aperiodic CSI report on the PUSCH.

In the case of non-multiplexing, the UCI types and the channel types that can be carried are shown in Table 3.

table 3

8. Overlapping of PUCCH and PUSCH

PUSCH or PUCCH transmissions may be assigned priority index 0 (lower priority index) or priority index 1 (larger priority index). For simplicity, the priority index 1 is hereinafter referred to as the high priority, and the priority index 0 is referred to as the low priority. Under the overlapping of PUCCH and PUSCH, the following two cases are discussed in detail.

8.1. PUSCH and PUCCH have different priorities

In most cases, the transmission of the overlapping low-priority PUCCH or PUSCH is canceled, and the specific details are related to the types of PUCCH and PUSCH, the content carried, etc., and will not be discussed in detail.

8.2, PUCCH and PUSCH have the same priority

For an overlapping set of PUCCHs/PUSCHs, if one of the PUCCHs/PUSCHs transmissions is dynamically scheduled, the UE expects the earliest PUCCH or the first symbol S ₀ in the PUSCH, satisfying the timeline conditions. Among them, this application does not discuss the details of the time condition in detail, and it can be approximated that the event condition requires sufficient processing time between S ₀ and the last symbol of the corresponding PDSCH/PDCCH, or it can be understood that S 0 and the corresponding PDSCH/PDCCH have sufficient processing time. The event interval between the last symbols of PDSCH/PDCCH is greater than a preset time value.

When the transmission of the same priority PUCCHs/PUSCHs overlaps, if the PUCCHs do not repeat (PUCCH wo repetition), the UCI will be multiplexed. First, the UE multiplexes the UCI in the overlapping PUCCHs. Next, if the PUSCH does not carry uplink data (PUSCH without UL-SCH), and the PUCCH contains a positive scheduling request (positive SR), the UE does not transmit the PUSCH. Otherwise, the UE will multiplex the HARQ-ACK information and the CSI report on the selected PUSCH without transmitting SR.

When the transmission of PUCCHs/PUSCHs with the same priority overlaps, if the PUCCHs are repeated (PUCCH wi repetition), the UE will not multiplex UCI. For overlapping between PUCCHs, the time condition needs to be met. First, the PUCCH to be sent is selected according to the UCI type priority rule, and then according to the time sooner or later rule. For the overlap between PUCCH wi repetition and PUSCH, if the time condition is satisfied, on the overlapping time slot or actual PUSCH repetition, the PUCCH is transmitted, and the PUSCH is not transmitted, that is, the UE does not multiplex UCI on the PUSCH.

As shown in Figure 5a, when PUCCH overlaps with only one slot/PUSCH repetition, UCI will be multiplexed on this slot/PUSCH repetition. As shown in Figure 5b, when PUCCH overlaps with multiple slot/PUSCH repetitions, UCI will be multiplexed on these slot/PUSCH repetitions.

9. Rules for multiplexing UCI on PUSCH

When the PUCCH overlaps with multiple PUSCHs of the same priority, the UE selects the PUSCH that multiplexes HARQ-ACK information and/or CSI reports according to the following rules (the rules are sorted from high to low priority):

1) PUSCH carrying aperiodic CSI, and the UE multiplexes HARQ-ACK only on this PUSCH;

2) In the time slot where multiple PUSCHs are located, the PUSCH in the time slot with the earliest start position of the time slot;

3) PUSCH dynamically scheduled by DCI format;

4) The PUSCH of the serving cell with the smallest ServCellIndex value;

5) The earliest PUSCH transmitted by the UE in this time slot.

When the UE multiplexes UCI on the PUSCH, it needs to obtain the number of coded bits G used for transmission and the coded bit sequence g according to different UCI types, including the following steps:

1) For different UCI types, generate bit sequences.

2) Code block division and CRC addition: if the number of payloads of the UCI bit sequence is greater than or equal to 12 bits, perform this operation, and the channel coding mode of the UCI is determined to be Polar code; if the number of payloads of the UCI bit sequence is less than or equal to 11 bits, If no CRC is added, the channel coding mode of the UCI is determined to be channel coding of small block length.

3) Channel coding: If the number of payloads of the UCI bit sequence is greater than or equal to 12 bits, the Polar code is used; if the number of payloads of the UCI bit sequence is less than or equal to 11 bits, the small-block long channel coding is used.

4) Rate matching: For HARQ-ACK, CSI part 1, CSI part 2, UCI with configuration permission (CG-UCI), HARQ-ACK and CG-UCI, when using Polar code for channel coding, it is determined to be used for UCI transmission The number of coded modulation symbols per layer:

The number of coded modulation symbols per layer used for CSI part 1 transmission is Q'_CSI-1;

The number of coded modulation symbols per layer for CSI part 2 transmission is Q'_CSI-2;

With HARQ-ACK and without CG-UCI, the number of coded modulation symbols per layer used for HARQ-ACK transmission is Q'_ACK;

With CG-UCI and without HARQ-ACK, the number of coded modulation symbols per layer used for CG-UCI transmission is Q'_CG-UCI;

With HARQ-ACK and CG-UCI, the number of coded modulation symbols per layer used for HARQ-ACK and CG-UCI transmission is Q' _ACK :

When coding with a small block long channel, the number of coded modulation symbols per layer used for UCI transmission is determined.

After obtaining the number of coded modulation symbols per layer for different types of UCI transmission, the rate matching output sequence lengths of different code blocks and the output bit sequence after rate matching are determined according to the number of symbols.

5) Code block aggregation: rate-matched output bit sequences of different code blocks are sequentially concatenated.

6) The UE multiplexes the UCI bits output after the code block aggregation to the PUSCH. For the specific steps, please refer to the following introduction.

The UE multiplexes UCI and UL-SCH on the PUSCH according to the following steps:

First determine the resource unit set available for data transmission on PUSCH, denoted as Φ ₁ ; then determine the resource unit set available for transmission of uplink control information on PUSCH, denoted as Φ ₂ , where Φ ₂ is a subset of Φ ₁ : if a certain OFDM symbol If the REs of a certain OFDM symbol carry DMRS, then all REs of this OFDM symbol cannot carry UCI; if the REs of a certain OFDM symbol do not carry DMRS, then this OFDM symbol can carry UCI REs, and this OFDM symbol can carry UL - The RE of the SCH is the same.

Step 1: If the number of HARQ-ACK information bits is 0/1/2 and there is no CG-UCI, reserve RE on Φ ₁ according to the rules;

Step 2: If the number of HARQ-ACK information bits is greater than 2, or if both HARQ-ACK and CG-UCI exist, then the HARQ-ACK and CG-UCI (if any) are mapped to REs in Φ ₂ according to the rules, and Φ ₂ is updated In order to remove Φ ₂ that maps REs between HARQ-ACK and CG-UCI (if any), Φ ₁ is updated to remove Φ ₁ that maps REs between HARQ-ACK and CG-UCI (if any);

Step 2A: If there is CG-UCI and no HARQ-ACK, then CG-UCI is mapped to RE in Φ ₂ according to the rules, Φ ₂ is updated to remove Φ ₂ of CG-UCI mapping RE, and Φ ₁ is updated to remove CG- Φ ₁ of UCI mapping RE;

Step 3: If there is CSI, then CSI part 1 is mapped to RE in Φ ₂ according to the rules, and cannot be mapped to RE reserved in Step 1, Φ ₂ is updated to remove Φ ₂ from CSI part 1 mapped RE, Φ ₁ Update to remove Φ ₁ of CSI part 1 mapping RE; after that, CSI part 2 is mapped to RE in Φ ₂ according to the rules, Φ ₂ is updated to remove Φ 2 of CSI part ₂ mapped RE, Φ ₁ is updated to remove CSI part 2 mapping Φ ₁ of RE;

Step 4: If there is uplink data, the UL-SCH is mapped to the RE in Φ ₁ according to the rules;

Step 5: If there is HARQ-ACK, and there is no CG-UCI, and the number of HARQ-ACK information bits is not more than 2, the HARQ-ACK is mapped on the RE reserved in Step 1 according to the rules;

The above steps can be expanded according to different conditions, as shown in Figure 6 (from left to right, scenarios 1, 2, 3): Combined with the calculation steps of the number of coded modulation symbols and the steps of multiplexing UCI on the PUSCH by the UE, you can It can be seen that if the number of HARQ-ACK bits is 1/2 bits and there is no CG-UCI, the UE punctures the PUSCH to transmit the HARQ-ACK; for other types of UCIs that meet other conditions, the UE is on the PUSCH Do rate matching transmission. Specifically, as shown in Figure 7a, Figure 7b, and Figure 7c, wherein: Figure 7a is a schematic diagram of the mapping rule of scene 1; Figure 7b is a schematic diagram of the mapping rule of scene 2; Figure 7c is a schematic diagram of the mapping rule of scene 3.

The HARQ feedback information of (a), (b), (c) and (d) in FIG. 7a is mapped as when the HARQ feedback information is more than 2 bits, or when the UCI information includes the HARQ feedback information and CG-UCI, then According to the actual size, the mapping is performed sequentially starting from the first available symbol after the DMRS symbol. If the HARQ feedback information and the CG-UCI (if any) can occupy the entire current symbol, the current symbol will be occupied, and then the next symbol will be occupied. If the HARQ feedback information and CG-UCI (if any) are not enough to occupy the entire current symbol, they will be distributed on the frequency domain resources at equal intervals on the current symbol.

The HARQ feedback information and CG-UCI (if any) in the mapping UCI information are mapped, and the HARQ feedback information and CG-UCI (if any) are mapped from the first available symbol after the DMRS symbol, as shown in (a) of Figure 7a.

When the HARQ feedback information is more than 2 bits, or when the UCI information includes the HARQ feedback information and CG-UCI, as shown in (b) of Figure 7a, CSI part 1 is sequentially mapped from the first available symbol resource of the PUSCH, wherein, The first available symbol resource is the first available symbol resource of the PUSCH except for the resource elements mapped by the DMRS and HARQ feedback information.

When the HARQ feedback information is more than 2 bits, or when the UCI information includes the HARQ feedback information and CG-UCI, as shown in (c) of Figure 7a, CSI part 2 is sequentially mapped from the first available symbol resource of the PUSCH, wherein, The first available symbol resource is the first available symbol resource of PUSCH except for the resource elements mapped by DMRS, HARQ feedback information and CSI part 1.

When the HARQ feedback information is greater than 2 bits, or when the UCI information includes the HARQ feedback information and CG-UCI, as shown in (d) of Figure 7a, the uplink data is mapped sequentially from the first available symbol resource of the PUSCH, wherein the first An available symbol resource is the first available symbol resource of PUSCH except for the resources mapped by DMRS, HARQ feedback information, CSI part 1 and CSI part 2.

The cases of (a), (b), (c) and (d) in Figure 7b are: when the CG-UCI is transmitted on the PUSCH, but there is no HARQ feedback information on the PUSCH, the specific steps are similar to those in Figure 7b, but the difference is The CG-UCI in the mapping UCI information.

The HARQ feedback information of (a), (b), (c), (d) and (e) in Figure 7c is mapped to when the HARQ feedback information is any size of 0, 1 or 2 bits, and there is no CG- In the case of UCI, starting from the first available UCI symbol after the DMRS symbol in the PUSCH, PUSCH resources are reserved according to the 2-bit HARQ feedback information, which becomes a reserved area. It should be understood that, since the number of bits represented by each symbol in the resource block depends on the selected modulation order, the number of UCI and uplink data mapping resource elements in the figure is only an example.

It should be known that in this application, in the case where the PUCCH and the PUSCH overlap, the PUCCH and the PUSCH have the same priority. Based on this, it can be seen that when the repetition or time slot of the PUSCH is configured to transmit fewer DMRS symbols (it can be understood that the proportion of DMRS symbols configured in the repetition or time slot is less), or in the repetition or time slot is configured not to send DMRS. If the PUCCH and PUSCH are configured to transmit fewer DMRS symbols or do not transmit repetitions of DMRS or time slots overlap, the terminal-side device cannot carry the UCI in the PUCCH on the PUSCH for transmission, resulting in a decrease in channel estimation quality.

The present application provides a method for transmitting UCI. When the PUCCH and the PUSCH are configured to transmit fewer DMRS symbols or do not transmit the repetition of the DMRS or the time slots overlap, a solution is provided for the terminal side device to carry the UCI in the PUCCH on the PUSCH for transmission. .

The physical downlink control channel enhancement method provided by the embodiment of the present application is further described in detail below:

Please refer to FIG. 8a, which is a schematic flowchart of a method for sending uplink control information UCI provided by the present application. As shown in Figure 8a, the UCI sending method includes S801-S803. The method execution body shown in FIG. 8a may be a terminal-side device, and the terminal-side device includes a terminal device, a chip or a chip system of the terminal device, and the like. Fig. 8a uses a terminal device as an example of the execution subject of the method for description. in:

S801. Determine a first time domain unit of the PUSCH, where the first time domain unit is configured to transmit DMRS with a first resource quantity or not to transmit DMRS.

The time domain unit includes, but is not limited to, a slot, a time domain resource that transmits a repetition, a time domain resource that transmits a nominal repetition, a time domain resource that transmits an actual repetition, or several OFDM symbols. The first time-domain unit is a time-domain unit in the PUSCH configured to transmit the DMRS with the first resource quantity or not to transmit the DMRS. It can be understood that the DMRS is used to demodulate the PUSCH, and the DMRS shares the same logical antenna port with the PUSCH.

It should be noted that all reference signals or sequences used to demodulate PUSCH can be called demodulation reference signals. This application uses DMRS for schematic illustration, and other demodulation reference signals or sequences are also applicable to the description in this application. The UCI sending method, if the full text is the case, will not be specifically explained in the future.

S802. In the case where the time domain resources of the first time domain unit and the PUCCH do not overlap, send the PUSCH, and send the DMRS on the first time domain unit with the first resource quantity or determine not to send the DMRS.

The terminal device determines the first time domain unit of the PUSCH, and judges whether the first time domain unit overlaps with the time domain resources of the PUCCH, if not, executes the method steps described in S802;

When the first time domain unit of the PUSCH and the time domain resources of the PUCCH do not overlap, the terminal device sends the DMRS with the first resource quantity or does not send the DMRS according to the configuration of the network device. It should be noted that the number of resources includes, but is not limited to, the number of resource elements (resource elements, RE) or the number of time-domain symbols (hereinafter referred to as symbols for short).

For example, according to the configuration instruction of the network device, the number of the first resources used for sending DMRS in the first time domain unit of PUSCH is 2 symbols, and in the case that the first time domain unit and the time domain resources of PUCCH do not overlap, the terminal The device sends the PUCCH to the network device, and sends the DMRS in 2 symbols on the first time domain unit.

S803. In the case where the first time domain unit and the time domain resources of the PUCCH carrying the UCI overlap, the UCI is carried on the first time domain unit of the PUSCH and sent, and the second resource is used on the first time domain unit for transmission. number to send this DMRS. Wherein, the quantity of the second resource is greater than the quantity of the first resource.

When the first time domain unit overlaps with the time domain resources of the PUCCH, the terminal device increases the number of resources used for sending DMRS on the first time domain unit, that is, sends the DMRS with the aforementioned second resource number, and sends the DMRS originally sent by the first time domain unit. The UCI sent on the overlapping time domain unit of the PUCCH is carried on the first time domain unit and sent.

For example, as shown in (a) of Figure 8b, the network device configures some time-domain units (slots or repetitions) of PUSCH to transmit DMRS with 4 symbols, while the first time-domain unit of PUSCH is used to transmit the number of DMRS resources for 2 symbols. That is, it can be understood that the quantity of the first resource is 2 symbols, and the quantity of the second resource is 4 symbols. In the case where the first time domain unit overlaps with the time domain resources of the PUCCH, as shown in (b) in FIG. 8 b , the terminal device does not send the DMRS with 2 symbols (the first time domain unit configured by the network device originally sent the DMRS The DMRS is sent on the first time domain unit with 4 symbols, and the UCI originally sent on the overlapping PUCCH time domain resources is carried on the first time domain unit and sent.

It should be noted that the overlaps mentioned in this application are all overlaps in the time domain. The first time domain unit of PUSCH and the time domain resources of PUCCH overlap, which may be that PUSCH and PUCCH overlap only in the first time domain unit, or it may be that PUSCH and PUCCH overlap in multiple time domain units of PUSCH (including the first time domain unit). ) overlap, or the PUSCH and PUCCH may overlap in all time-domain units (including the first time-domain unit), which is not specifically limited in this application. The PUSCH and PUCCH overlap in a PUSCH time domain unit, which may be overlapped on all OFDM symbols in this time domain unit, or may overlap on some OFDM symbols in this time domain unit, which is not specifically limited in this application. The DMRS mentioned in this application may be different variants based on the same base sequence or different base sequences. For example, the DMRS configured to be sent with the first number of resources in the first time domain unit can be understood as the first DMRS, and the terminal equipment When sending the PUSCH to the network device, the DMRS sent with the second resource quantity in the first time domain unit can be understood as the second DMRS, and the first DMRS and the second DMRS can be generated based on the same base sequence or different base sequences different deformations.

In a possible implementation, the terminal device determines that after the first time-domain unit transmits the DMRS with the second resource quantity, the terminal device determines the second time-domain unit, the interval between the second time-domain unit and the first time-domain unit is k×N time domain units. Wherein, k is a positive integer greater than or equal to 1, N is a positive integer greater than or equal to 2, and the second time domain unit is a time domain unit for sending the DMRS with the second resource quantity.

It can be understood that the second time domain unit is a time domain unit for sending the DMRS with the second resource quantity after the first time domain unit. The first time domain unit is configured by the network device to transmit the DMRS or the time domain unit that does not transmit the DMRS with the first resource quantity, and the time domain unit overlaps with the time domain resources of the PUCCH. The network device configures an interval of N time domain units between two adjacent time domain units for sending DMRS with the second resource quantity. In this case, if the terminal device determines to send the DMRS with the second resource quantity in the first time domain unit After the DMRS, the terminal device can also adjust the position of the first time domain unit and the interval (N time domain units) between two adjacent time domain units that transmit the DMRS with the second number of resources. The position of the time domain unit in which the DMRS is transmitted with the second number of resources. Specifically, when the second time domain unit is the kth time domain unit after the first time domain unit that sends DMRS with the second number of resources, the interval between the second time domain unit and the first time domain unit is k× N time domain units.

Exemplarily, as shown in FIG. 8c (a), the network device configures a part of the time domain unit (slot or repetition) of the PUSCH to transmit the DMRS with 4 symbols, and transmits two adjacent times of the DMRS with 4 symbols. The interval between domain units is 3 time domain units (ie, N is 3). The number of resources used for sending DMRS in the first time domain unit of the PUSCH is 2 symbols. When the terminal device determines to send the DMRS with 4 symbols in the first time domain unit, and transmits the UCI of the PUCCH on the first time domain unit, as shown in (b) in FIG. The position of the time domain unit determines the position of the second time domain unit after the first time domain unit. As shown in (b) in Figure 8c, when the second time domain unit is the first time domain unit after the first time domain unit that sends DMRS with the second number of resources, the second time domain unit is the same as the first time domain unit. The interval between domain units is 3 time domain units (that is, k is 1). When the second time domain unit is the second time domain unit after the first time domain unit that sends DMRS with the second number of resources, the first time domain unit The interval between the second time domain unit and the first time domain unit is 6 time domain units (that is, k is 2), and so on. It can be seen intuitively from Fig. 8c that in Fig. 8c (b) the number of time-domain units for sending DMRS with the second number of resources is significantly less than that for sending DMRS with the second number of resources in (a) in Fig. 8c The number of domain units can be understood as that by implementing this possible implementation, communication resources for transmitting DMRS may be effectively saved. It can be understood that the interval N between two adjacent time-domain units for sending DMRS with the second resource quantity is configured by the base station or preset by the protocol, and the N can be the interval between two time-domain units (for example, the first time-domain unit interval N). The interval N between the unit and the fourth time domain unit is 3), or it can be the interval between the start symbols of the two time domain units (for example, the start symbol of the first time domain unit and the fourth time domain unit The interval N between the start symbols is 4), and the setting method of N can be determined according to the specific application scenario, which is not limited in this application.

It can be seen that, by implementing the UCI sending method described in FIG. 8a, in the case where the first time domain unit of PUSCH overlaps with the PUCCH time domain resources, although the first time domain unit of PUSCH is configured to send the demodulation reference with the first resource quantity Signal DMRS or do not send the DMRS, the terminal device can still carry the UCI in the overlapping PUCCH time domain resources in the first time domain unit for transmission, thereby ensuring the timeliness of UCI transmission and the quality of channel estimation.

Please refer to FIG. 9a, which is a schematic flowchart of another method for sending uplink control information UCI provided by the present application. As shown in Figure 9a, the UCI sending method includes S901-S902. The method execution body shown in FIG. 9a may be a terminal-side device, and the terminal-side device includes a terminal device, a chip or a chip system of the terminal device, and the like. Fig. 9a uses a terminal device as an execution subject of the method as an example for description. in:

S901. Determine a first time-domain unit of the PUSCH, where the first time-domain unit is configured to send DMRS with a first number of resources or not to send DMRS.

For the specific implementation of S901, reference may be made to the foregoing description of the specific implementation of S801, which will not be repeated in this application.

S902: In the case that the first time domain unit overlaps with the time domain resources of the PUCCH carrying the UCI, carry the UCI on the third time domain unit of the PUSCH and send the data. The third time domain unit is the first time domain unit after the first time domain unit that is configured to send the DMRS with the second resource quantity, and the second resource quantity is greater than the first resource quantity.

In other words, when the first time domain unit of the PUSCH overlaps the time domain resources of the PUCCH, the first time domain unit of the PUSCH is configured to transmit the DMRS with the first resource amount or not to transmit the DMRS. In this case, the terminal device can carry the UCI on the overlapping PUCCH time domain resources on the PUSCH for delayed transmission, that is, the UCI is not sent on the first time domain unit where the PUCCH overlaps, but the UCI is sent on the first time domain unit. Afterwards, the UCI is sent on the first time domain unit configured to send the DMRS with the second resource quantity.

For example, as shown in (a) of Figure 9b, the network device configures some time-domain units (slots or repetitions) of PUSCH to transmit DMRS with 4 symbols, and the number of resources used to transmit DMRS in the first time-domain unit of PUSCH is 2 symbols. That is, it can be understood that the quantity of the first resource is 2 symbols, and the quantity of the second resource is 4 symbols. In the case where the first time domain unit overlaps with the time domain resources of the PUCCH, as shown in (b) in FIG. 9b, the terminal device sends the first time domain unit after the first time domain unit to send the DMRS with 4 symbols in the time domain unit It is determined as the third time domain unit, and the UCI on the overlapping PUCCH time domain resource is carried on the third time domain unit for sending.

It should be known that in the case where the time domain resources of the first time domain unit and the PUCCH do not overlap, the PUSCH is sent, and the DMRS is sent on the first time domain unit with the first resource quantity or it is determined not to send the DMRS. In this case, for details, reference may be made to the description of the specific implementation manner of S802, which will not be repeated here.

It can be seen that by implementing the UCI sending method described in FIG. 9a, in the case where the first time domain unit of PUSCH overlaps with the PUCCH time domain resources, the PUCCH can be sent without increasing the number of resources for sending DMRS in the first time domain unit. The UCI is carried on the PUSCH and sent on the PUSCH to ensure the quality of channel estimation, and provide a feasible implementation of UCI sending for scenarios where transmission resources are limited.

Please refer to FIG. 10a. FIG. 10a is a schematic flowchart of another method for sending uplink control information UCI provided by the present application. As shown in Fig. 10a, the UCI sending method includes S1001-S1003. The method execution body shown in FIG. 10a may be a terminal-side device, and the terminal-side device includes a terminal device, a chip or a chip system of the terminal device, and the like. Fig. 10a uses a terminal device as an execution subject of the method as an example for description. in:

S1001. Determine a first time domain unit of the PUSCH, where the first time domain unit is configured to send DMRS with a first resource quantity or not to send DMRS.

For the specific implementation of S1001, reference may be made to the foregoing description of the specific implementation of S801 or S901, which will not be repeated in this application.

S1002. If the interval between the first time domain unit and the third time domain unit is greater than the first value, carry the UCI on the PUSCH for sending, and send the DMRS on the first time domain unit with the second resource quantity. The third time domain unit is the first time domain unit after the first time domain unit that is configured to send the DMRS with the second resource quantity, and the second resource quantity is greater than the first resource quantity.

In other words, in the case where the first time domain unit overlaps with the time domain resources of the PUCCH carrying UCI, the terminal device determines whether the interval between the first time domain unit and the third time domain unit is greater than (or greater than or equal to) ) first value. The first value is a preset number of time-domain units, which can be adjusted according to specific application scenarios, and the specific value of the first value is not limited in this solution. The first value can be configured by radio resource control (radio resource control, RRC) signaling, can also be configured by a control element (control element, CE) of a media access control layer (media access control, MAC), and can also be configured by DCI , or predefined by a protocol, which is not limited in this application. That is to say, when the first time domain unit overlaps with the time domain resources of the PUCCH carrying UCI, the interval between the first time domain unit and the third time domain unit is determined. And the specific bearer scheme of the UCI is determined according to the interval between the first time domain unit and the third time domain unit.

When the interval between the first time domain unit and the third time domain unit (that is, the number of time domain units of the interval) is greater than (or may be greater than or equal to) the preset number of time domain units (that is, the first value), the terminal The device carries the UCI on the PUSCH and sends it, and sends the DMRS on the first time domain unit with the second resource quantity. For the specific UCI sending method, please refer to the description of the specific implementation of S803 in FIG. 8a, which is not repeated here. Describe in detail.

Exemplarily, the first value is 2 time domain units. As shown in FIG. 10b, the time domain resource of PUCCH overlaps with the first time domain unit of PUSCH, and the first time domain unit is configured with 2 symbols (the first resource Quantity) to transmit DMRS, and the second resource quantity is 4 symbols. In this case, the terminal device determines the time domain of the interval between the first time domain unit after the first time domain unit that transmits the DMRS with 4 symbols (ie, the third time domain unit) and the first time domain unit The number of units is 3 time-domain units, and when it is greater than 2 time-domain units (ie, the first value), it can be considered that the UCI in the PUCCH is carried on the third time-domain unit for transmission, which will cause the UCI delay, which is beyond the tolerable within the range. Therefore, the terminal device carries the UCI on the PUSCH and sends it, and sends the DMRS with the second resource quantity on the first time domain unit. The specific UCI sending method can refer to the description of the specific implementation of S803 in the aforementioned FIG. A detailed description will not be given.

S1003. If the interval between the first time domain unit and the third time domain unit is less than or equal to the first value, carry the UCI on the third time domain unit of the PUSCH for transmission.

When the interval between the first time-domain unit and the third time-domain unit (that is, the number of time-domain units of the interval) is less than or equal to (or less than) the preset number of time-domain units (that is, the first value), the terminal The device carries the UCI on the third time domain unit of the PUSCH and sends it. For the specific UCI sending method, refer to the description of the specific implementation of S902 in the foregoing FIG. 9a, which will not be described in detail here.

Exemplarily, the first value is 2 time domain units. As shown in FIG. 10c , the time domain resources of PUCCH overlap with the first time domain unit of PUSCH, and the first time domain unit is configured with 2 symbols (the first resource Quantity) to transmit DMRS, and the second resource quantity is 4 symbols. In this case, the terminal device determines the time domain of the interval between the first time domain unit after the first time domain unit that transmits the DMRS with 4 symbols (ie, the third time domain unit) and the first time domain unit number of units. If the number of time-domain units spaced between the first time-domain unit and the third time-domain unit is 1 time-domain unit and less than 2 time-domain units (the first value) as shown in FIG. The UCI is carried on the third time domain unit and the UCI delay caused by the transmission is within a tolerable range, and the terminal device carries the UCI in the PUCCH on the third time domain unit for sending.

It can be seen that, by implementing the UCI sending method described in FIG. 10a, the specific sending method of UCI can be flexibly selected. When the interval between the first time-domain unit and the first time-domain unit after the first time-domain unit that transmits DMRS with the second number of resources is large, in order to ensure the quality of channel estimation, it is necessary to The number of resources for sending DMRS is increased, and the UCI of the PUCCH is carried on the first time domain unit. When the interval between the first time domain unit and the first time domain unit after the first time domain unit that sends DMRS with the second resource quantity is small, the quantity of resources configured by the network device for sending DMRS may not be changed, thereby reducing Consumption of small transmission resources.

Please refer to FIG. 11a. FIG. 11a is a schematic flowchart of another method for sending uplink control information UCI provided by the present application. As shown in Fig. 11a, the UCI sending method includes S1101-S1102. The method execution body shown in FIG. 11a may be a terminal-side device, and the terminal-side device includes a terminal device, a chip or a chip system of the terminal device, and the like. Fig. 11a takes a terminal device as an execution subject of the method as an example for description. in:

S1101. Determine a first time domain unit of the PUSCH, where the first time domain unit is configured to send DMRS with a first resource quantity or not to send DMRS.

For the specific implementation of S1101, reference may be made to the foregoing description of the specific implementation of S801, which will not be repeated in this application.

S1102. In the case where the first time domain unit overlaps with the time domain resource of the PUCCH carrying the UCI, the UCI is carried on the first time domain unit of the PUSCH and sent, and the configured first time domain unit is sent on the first time domain unit. A number of resources to send DMRS or not to send DMRS.

In other words, when the first time domain unit overlaps with the time domain resources of the PUCCH carrying the UCI, the UCI is carried on the REs on the first time domain unit except the symbol configured to transmit the DMRS on the REs on the symbols . Exemplarily, as shown in (a) of FIG. 11b, the first time domain unit includes 14 symbols. If the first time domain unit is configured to transmit DMRS with 2 symbols (ie, the third symbol and the fourth symbol shown in (a) in FIG. 11b ), the UCI of the PUCCH can be placed in the division of the second symbol. and symbols other than the 3rd symbol. For example, placing the UCI of the PUCCH on the first symbol can make the DMRS closer to the last time domain unit that sends the DMRS with the second resource quantity before the first time domain unit, so as to ensure the quality of channel estimation as much as possible. In another example, as shown in FIG. 11b(b), the first time domain unit includes 14 symbols. If the first time domain unit is configured not to transmit DMRS, the UCI of the PUCCH can be placed in the first time domain unit. on any symbol in a time domain unit. For example, placing the UCI of the PUCCH on the first symbol can make the DMRS closer to the last time domain unit that sends the DMRS with the second resource quantity before the first time domain unit, so as to ensure the quality of channel estimation as much as possible. It should be noted that each symbol contains multiple REs. When the terminal device determines to use a certain symbol to transmit UCI, it can use all REs of the symbol to transmit UCI, or it can be part of the REs of the symbol (in The RE selection in this symbol may be discontinuous) used to transmit UCI.

In a possible implementation, the terminal device determines the position of the first resource element RE in the first time domain unit according to the symbol position of the DMRS of the second resource quantity in the fifth time domain unit. Wherein, the fifth time-domain unit is a time-domain unit in the PUSCH configured to transmit the DMRS with a second resource quantity, and the second resource quantity is greater than the first resource quantity. Further, the terminal device sends the UCI on the first RE in the first time domain resource. By implementing this possible implementation, the mapping method of UCI can be unified, that is, it can be understood that regardless of whether the first time domain unit is configured to send DMRS with the first resource quantity or the second resource quantity, or is configured not to send DMRS, the UCI is mapped to The positions of the first time domain units may all be the same. It can be understood that the first RE is a set of a group of REs.

Exemplarily, the number of the second resources is 4 symbols, and the network device configures the fifth time domain unit in the PUSCH to send the DMRS with 4 symbols, as shown in (a) in FIG. 11c , where the third time domain unit in the fifth time domain unit is symbol, the 4th symbol, the 8th symbol and the 9th symbol are configured to transmit DMRS. If the first time-domain unit is shown in (b) of FIG. 11 c, the first time-domain unit is configured to transmit the DMRS with 2 symbols (the third symbol and the fourth symbol). In this case, the terminal equipment reserves the fifth time domain unit in the first time domain unit for transmitting the symbols of the DMRS (the 3rd symbol, the 4th symbol, the 8th symbol and the 9th symbol), The position of the first RE is determined, that is, the first RE may be an RE on symbols other than the 3rd symbol, the 4th symbol, the 8th symbol and the 9th symbol in the first time domain unit.

In another possible implementation, if the first time-domain unit of the PUSCH is configured to send the DMRS with the first number of resources, the UCI is carried on the second resource unit RE in the first time-domain unit of the PUSCH, and the first time-domain unit of the PUSCH is configured to transmit the DMRS. UCI is sent on the second RE. Wherein, the second RE includes at least one RE on the symbol after the DMRS symbol in the first time domain unit. It should be known that the second RE is a set of REs.

Exemplarily, as shown in (a) of FIG. 11d , the first time domain unit includes 14 symbols. If the first time domain unit is configured with 2 symbols (that is, the one shown in (a) of FIG. 11d ) The 3rd symbol and the 4th symbol) send DMRS, then the UCI of PUCCH can be placed on at least one RE on the symbol after the DMRS symbol, that is, the UCI of PUCCH can be placed on the third symbol shown in (a) of Figure 11d On at least one RE on the symbol after the symbol (ie, the RE on the 5th symbol to the 14th symbol in (a) in FIG. 11d ).

In another example, as shown in FIG. 11d (b), if the first time domain unit is configured not to transmit DMRS, the UCI of the PUCCH can be placed on any RE in the first time domain unit. For example, placing the UCI of the PUCCH on the first RE can make the DMRS closer to the last time domain unit that sends the DMRS with the second resource quantity before the first time domain unit, so as to ensure the quality of channel estimation as much as possible.

It can be seen that by implementing the UCI sending method described in FIG. 11a, in the case where the first time domain unit of PUSCH overlaps with the PUCCH time domain resources, there is no need to increase the number of resources for sending DMRS in the first time domain unit, and there is no need to delay Send UCI in PUCCH.

Please refer to FIG. 12a. FIG. 12a is a schematic flowchart of another method for sending uplink control information UCI provided by the present application. As shown in Figure 12a, the UCI sending method includes S1201-S1203. The method execution body shown in FIG. 12a may be a terminal-side device, and the terminal-side device includes a terminal device, a chip or a chip system of the terminal device, and the like. Fig. 12a uses a terminal device as an execution subject of the method as an example for description. in:

S1201. Determine a first time domain unit of the PUSCH, where the first time domain unit is configured to send DMRS with a first resource quantity or not to send DMRS.

For the specific implementation manner of S1201, reference may be made to the foregoing specific implementation manner description of S801, S901 or S1101, which will not be repeated in this application.

S1202. If the interval between the first time domain unit and the fourth time domain unit is less than or equal to the second value, carry the UCI on the first time domain unit of the PUSCH for transmission. The fourth time-domain unit is the last time-domain unit configured to send the DMRS with the second resource quantity before the first time-domain unit.

In other words, in the case that the first time domain unit overlaps with the time domain resources of the PUCCH carrying the UCI, the interval between the first time domain unit and the fourth time domain unit is determined. And the specific bearer transmission scheme of the UCI is determined according to the interval between the first time domain unit and the fourth time domain unit. The second value is a preset number of time domain units.

When the interval between the first time-domain unit and the fourth time-domain unit (that is, the number of time-domain units of the interval) is less than or equal to (or less than) the preset number of time-domain units (that is, the second value), the terminal The device carries the UCI on the first time domain unit of the PUSCH and sends it. For the specific UCI sending method, refer to the description of the specific implementation of S1102 in the foregoing FIG. 11a, which will not be described in detail here.

For example, the second value is 1 time domain unit. As shown in Figure 12b, the time domain resource of PUCCH overlaps with the first time domain unit of PUSCH, and the first time domain unit is configured with 2 symbols (the first number of resources) The DMRS is sent, and the second resource quantity is 4 symbols. In this case, the terminal device determines the time domain unit of the interval between the last time domain unit (ie, the fourth time domain unit) in which the DMRS is transmitted in 4 symbols before the first time domain unit and the first time domain unit number. If the number of time domain units spaced between the first time domain unit and the fourth time domain unit is 1 time domain unit as shown in FIG. 12b, it is equal to 1 time domain unit (the second value). At this time, it can be considered that the quality of the channel estimation is still good (within the tolerable range of the network device) due to the influence of the DMRS in the fourth time domain unit, and the terminal device can carry the UCI in the PUCCH on the first time domain unit for transmission , and send the DMRS on the first time domain unit with the first resource quantity (2 symbols) configured by the network device.

S1203. If the interval between the first time domain unit and the fourth time domain unit is greater than the second value, carry the UCI on the PUSCH for sending, and send the DMRS on the first time domain unit with the second resource quantity.

When the interval between the first time-domain unit and the fourth time-domain unit (that is, the number of time-domain units of the interval) is greater than (or may be greater than or equal to) the preset number of time-domain units (that is, the second value), the terminal The device sends the UCI on the PUSCH, and sends the DMRS on the first time domain unit with the second resource quantity. For the specific UCI sending method, please refer to the description of the specific implementation of S803 in the aforementioned FIG. 8a, here A detailed description will not be given.

S1204. If the interval between the first time domain unit and the fourth time domain unit is greater than the second value, carry the UCI on the third time domain unit of the PUSCH for transmission.

When the interval between the first time-domain unit and the fourth time-domain unit (that is, the number of time-domain units of the interval) is greater than (or may be greater than or equal to) the preset number of time-domain units (that is, the second value), the terminal The device sends the UCI on the third time domain unit of the PUSCH. For the specific UCI sending method, refer to the description of the specific implementation of S902 in FIG. 9a, which will not be described in detail here. It should be known that S1203 and S1204 are two parallel options.

Exemplarily, the second value is 1 time domain unit. As shown in FIG. 12c, the time domain resource of PUCCH overlaps with the first time domain unit of PUSCH, and the first time domain unit is configured with 2 symbols (the first time domain unit). resource quantity) to transmit DMRS, and the second resource quantity is 4 symbols. In this case, the terminal device determines the time domain unit of the interval between the last time domain unit (ie, the fourth time domain unit) in which the DMRS is transmitted in 4 symbols before the first time domain unit and the first time domain unit number. If the number of time domain units spaced between the first time domain unit and the fourth time domain unit is 2 time domain units as shown in FIG. 12c , it is greater than 1 time domain unit (the second value). At this time, it can be considered that the quality of the channel estimation is poor (beyond the tolerable range of the network device), then the terminal device carries the UCI on the PUSCH as shown in (a) in Figure 12c and sends it on the first time domain unit with the second The DMRS is sent according to the number of resources; or, as shown in (b) in FIG. 12c , the terminal device carries the UCI on the third time domain unit of the PUSCH and sends it.

It can be seen that, by implementing the UCI sending method described in FIG. 12a, the specific sending method of UCI can be flexibly selected.

In an application scenario, the aforementioned first time domain unit is the first time domain unit in at least one time domain unit of the PUSCH overlapping the PUCCH time domain resource. Alternatively, the first time-domain unit may be any time-domain unit in at least one time-domain unit of the PUSCH overlapping with the PUCCH time-domain resource. Alternatively, the first time domain unit may be all time domain units in at least one time domain unit of the PUSCH overlapping the PUCCH time domain resource.

Exemplarily, the overlapping time domain unit of PUCCH and PUSCH has 4 time domain units, including: the second time domain unit, the third time domain unit, the fourth time domain unit, and the fifth time domain unit. In this case, the first time-domain unit may be the first time-domain unit (ie, the second time-domain unit) in at least one time-domain unit of the overlapping PUSCH; or, the first time-domain unit is Any one time domain unit from the second time domain unit to the fifth time domain unit; or, the first time domain unit includes the second time domain unit, the third time domain unit, the fourth time domain unit, the 5 time domain units.

In a possible implementation, the PUCCH overlapping the first time domain unit of the PUSCH is classified, and further, the terminal device determines, according to the specific category of the PUCCH, the specific transmission method of the UCI in the PUCCH carried in the PUSCH to transmit the UCI, thereby improving the The adaptability of the UCI transmission method to the PUCCH type. The first type of PUCCH is the PUCCH of the HARQ ACK corresponding to the first PDSCH, and the first PDSCH is the PDSCH carrying the DCI scheduling, that is, it can be understood that the PUCCH corresponding to the sequence number 1 in the foregoing Table 3 is divided into the first type of PUCCH. Or, the first type of PUCCH is any one of the PUCCH of the HARQ ACK corresponding to the first PDSCH and the PUCCH carrying the HARQ ACK corresponding to the SPS PDSCH, that is, it can be understood as the PUCCH corresponding to the sequence number 1 and the sequence number 2 in the aforementioned Table 3. Divided into the first type of PUCCH. Alternatively, the first type of PUCCH is any one of the PUCCH of the HARQ ACK corresponding to the first PDSCH and the PUCCH carrying the HARQ ACK corresponding to the DCI, that is, it can be understood that the PUCCH corresponding to the sequence numbers 1 and 3 in the foregoing Table 3 is divided For the first type of PUCCH. Or, the first type of PUCCH is any one of the PUCCH of the HARQ ACK corresponding to the first PDSCH, the PUCCH carrying the HARQ ACK corresponding to the SPS PDSCH, and the PUCCH carrying the HARQ ACK corresponding to the DCI, that is, it can be understood as the sequence number in Table 3. 1. The PUCCHs corresponding to the sequence numbers 2 and 3 are divided into the first type of PUCCHs.

In another possible implementation, the second type of PUCCH is at least one type of PUCCH other than the first type of PUCCH. It can be understood that the second type of PUCCH corresponds to the first type of PUCCH. After the first type of PUCCH is determined, other PUCCHs except the first type of PUCCH can be divided into the second type of PUCCH; Class PUCCH and other PUCCHs other than the PUCCH carrying SR are divided into the second class PUCCH; it is also possible to divide at least one PUCCH except the first class PUCCH into the second class PUCCH.

Exemplarily, when the PUCCH corresponding to the sequence number 1 in the foregoing Table 3 is divided into the first type of PUCCH, other PUCCHs in Table 3 except the PUCCH corresponding to the sequence number 1 may be determined as the second type of PUCCH; In addition to the PUCCH corresponding to sequence number 1 and the PUCCH carrying SR (that is, the PUCCH corresponding to sequence number 8), other PUCCHs are determined as the second type of PUCCH; any one of the PUCCHs in Table 3 except the PUCCH corresponding to sequence number 1 can also be used. The PUCCH is determined to be the second PUCCH.

In application scenario 1, the terminal device determines the PUCCH of the first type and the PUCCH of the second type. Further, in the case where the first time domain unit of the PUSCH overlaps the time domain resources of the PUCCH, the terminal device determines that the PUCCH is of the second type PUCCH, and according to any one of the UCI transmission methods in the aforementioned Fig. 8a, Fig. 9a, Fig. 10a, Fig. 11a or Fig. 12a. In other words, in this application scenario, the PUCCH of the first type is not allowed to overlap with the PUSCH, and the PUCCH that overlaps with the PUSCH in the time domain are all the PUCCH of the second type. Further, the terminal device transmits the UCI in the second type of PUCCH according to any one of the UCI transmission methods in the aforementioned Fig. 8a, Fig. 9a, Fig. 10a, Fig. 11a or Fig. 12a.

In application scenario 2, the terminal device determines the PUCCH of the first type and the PUCCH of the second type. Further, in the case that the time domain resources of the first type of PUCCH overlap with the first time domain unit of the PUSCH, the terminal device sends the UCI in the first type of PUCCH according to the UCI transmission method described in FIG. 8a. In the case that the time domain resources of the second type of PUCCH overlap with the first time domain unit of the PUSCH, the terminal device sends the second type of PUCCH according to any one of the UCI transmission methods in FIG. 9a, FIG. 10a, FIG. 11a or FIG. UCI.

In application scenario 3, the terminal device determines the PUCCH of the first type and the PUCCH of the second type. Further, in the case where the time domain resources of the first type PUCCH overlap with the first time domain unit of the PUSCH, the terminal device sends the first UCI sending method according to any one of the aforementioned UCI sending methods in FIG. 8a, FIG. 9a, FIG. 10a or FIG. 12a. UCI in PUCCH-like. In the case that the time domain resources of the second type of PUCCH overlap with the first time domain unit of the PUSCH, the terminal device transmits the UCI in the second type of PUCCH according to the UCI transmission method described in the aforementioned FIG. 11a.

In application scenario 4, the terminal device determines the PUCCH of the first type and the PUCCH of the second type. Further, in the case where the time domain resources of the first type PUCCH overlap with the first time domain unit of the PUSCH, the terminal device sends the first UCI sending method according to any one of the aforementioned UCI sending methods in FIG. 8a, FIG. 9a, FIG. 10a or FIG. 12a. UCI in PUCCH-like. In the case where the time domain resources of the second type PUCCH overlap with the first time domain unit of the PUSCH, if the first time domain unit of the PUSCH is configured to transmit the demodulation reference signal DMRS with the first resource The UCI transmission method described in FIG. 11a transmits UCI in the second type of PUCCH. In the case where the time domain resources of the second type of PUCCH overlap with the first time domain unit of the PUSCH, if the first time domain unit of the PUSCH is configured not to transmit DMRS, the terminal device will follow the aforementioned FIG. 8a, FIG. 9a, and FIG. 10a. Or any one of the UCI sending methods in Fig. 12a sends the UCI in the second type of PUCCH.

In application scenario 5, when the first type of PUCCH and the second type of PUCCH overlap and overlap with the first time domain unit of the PUSCH, then according to the first type of PUCCH in application scenario 1, application scenario 2, application scenario 3 or application scenario The UCI sending method in 4 sends the UCI of the second type of PUCCH.

It should be noted that, in the specific implementation, some steps in the drawings may be selected for implementation, and the order of the steps in the drawings may also be adjusted for implementation, which is not limited in the present application. It should be understood that the specific implementation of performing some steps in the figures or the order of adjusting the steps falls within the protection scope of the present application.

Referring to FIG. 13 , FIG. 13 shows a schematic structural diagram of a communication apparatus 1300 according to an embodiment of the present application. The communication apparatus shown in FIG. 13 can be used to implement part or all of the functions of the terminal equipment in the embodiment corresponding to the above-mentioned method for sending uplink control information UCI. The communication apparatus shown in FIG. 13 can be used to implement part or all of the functions of the terminal device in the method embodiment described in the above-mentioned FIG. 8a, FIG. 9a, FIG. 10a, FIG. 11a or FIG. 12a. The device may be a terminal device, or a device in the terminal device, or a device that can be used in combination with the terminal device. Wherein, the communication transposition may also be a chip or a chip system. The communication apparatus shown in FIG. 13 may include a communication module 1301 and a processing module 1302 . in:

In one embodiment, the processing module 1302 is configured to determine a first time domain unit of the physical uplink shared channel PUSCH, where the first time domain unit is configured to send the demodulation reference signal DMRS with a first number of resources or not to send the DMRS; in the case where the time domain resources of the first time domain unit and the physical uplink control channel PUCCH do not overlap, the PUSCH is sent, and the first time domain unit is sent with the first resource quantity. the DMRS or determine not to send the DMRS; the communication module 1301 is configured to carry the UCI on the The PUSCH is sent on the first time-domain unit, and the DMRS is sent on the first time-domain unit with a second resource quantity; the second resource quantity is greater than the first resource quantity.

In a possible implementation, the processing module 1302 is further configured to determine a second time domain unit, and the interval between the second time domain unit and the first time domain unit is k×N time domain units , the k is a positive integer greater than or equal to 1, the N is a positive integer greater than or equal to 2, and the second time domain unit is a time domain unit for sending the DMRS with the second resource quantity.

In a possible implementation, the communication module 1301 is configured to, when the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying UCI overlap, if the first time domain unit is the same as If the interval between the third time domain units is greater than the first value, the UCI is carried on the PUSCH and sent, and the DMRS is sent on the first time domain unit with the second number of resources; The three-time-domain unit is the first time-domain unit configured to transmit the DMRS with the second resource quantity after the first time-domain unit.

In a possible implementation, the communication module 1301 is configured to, when the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying UCI overlap, if the first time domain unit is the same as If the interval between the fourth time-domain units is greater than the second value, the UCI is carried on the PUSCH and sent, and the DMRS is sent on the first time-domain unit with the second number of resources; The four-time-domain unit is the last time-domain unit configured to transmit the DMRS with the second resource quantity before the first time-domain unit.

In a possible implementation, the first time domain unit is the first time domain unit in at least one time domain unit of the PUSCH overlapping the time domain resource of the PUCCH.

In one embodiment, the processing module 1302 is configured to determine a first time domain unit of the physical uplink shared channel PUSCH, where the first time domain unit is configured to send the demodulation reference signal DMRS with a first number of resources or not to send the DMRS; the communication module 1301 is configured to carry the UCI on the third time domain unit of the PUSCH under the condition that the time domain resources of the first time domain unit and the physical uplink control channel PUCCH carrying the UCI overlap. Sending; the third time domain unit is the first time domain unit configured to send the DMRS with a second resource quantity after the first time domain unit, and the second resource quantity is greater than the first resource quantity .

In a possible implementation, the communication module 1301 is configured to, if the interval between the first time domain unit and the third time domain unit is less than or equal to a first value, carry the UCI in the It is sent on the third time domain unit of the PUSCH.

In a possible implementation, the communication module 1301 is configured to carry the UCI on the first time-domain unit of the PUSCH if the interval between the first time-domain unit and the fourth time-domain unit is greater than a second value It is sent on three time domain units, and the fourth time domain unit is the last time domain unit configured to send the DMRS with the second resource quantity before the first time domain unit.

In a possible implementation, the first time domain unit is the first time domain unit in at least one time domain unit of the PUSCH overlapping the time domain resource of the PUCCH.

In one embodiment, the processing module 1302 is configured to determine a first time domain unit of the physical uplink shared channel PUSCH, where the first time domain unit is configured to send the demodulation reference signal DMRS with a first number of resources or not to send the DMRS; a communication module 1301, configured to carry the UCI in the first time domain of the PUSCH in the case that the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying the UCI overlap unit, and the DMRS is sent on the first time domain unit with the configured first resource quantity or it is determined not to send the DMRS.

In a possible implementation, the processing module 1302 is configured to determine the position of the first resource element RE in the first time domain unit according to the symbol position of the DMRS of the second resource quantity in the fifth time domain unit, where The fifth time domain unit is a time domain unit in the PUSCH that is configured to send the DMRS with a second resource quantity, and the second resource quantity is greater than the first resource quantity; the communication module 1301 is used for The UCI is carried on the first RE in the first time domain resource and sent.

In a possible implementation, the communication module 1301 is configured to, if the first time domain unit of the PUSCH is configured to send the DMRS with a first resource quantity, carry the UCI on the first time domain unit of the PUSCH On the second resource element RE in a time domain unit, the UCI is sent on the second RE of the PUSCH; the second RE includes at least one of the symbols following the DMRS symbol in the first time domain unit RE.

In a possible implementation, the communication module 1301 is configured to carry the UCI on the PUSCH if the interval between the first time domain unit and the fourth time domain unit is less than or equal to a second value The fourth time domain unit is the last time domain unit configured to send the DMRS with the second resource quantity before the first time domain unit.

In a possible implementation, the first time domain unit is the first time domain unit in at least one time domain unit of the PUSCH overlapping the time domain resource of the PUCCH.

In one embodiment, the processing module 1302 is configured to determine the first type of physical uplink control channel PUCCH and the second type of PUCCH; in the case that the first time domain unit of the physical uplink shared channel PUSCH overlaps with the time domain resources of the PUCCH, Then, it is determined that the PUCCH is the PUCCH of the second type, and the method described in Fig. 8a, Fig. 9a, Fig. 10a, Fig. 11a or Fig. 12a is performed.

In one embodiment, the processing module 1302 is configured to determine the first type of physical uplink control channel PUCCH and the second type of PUCCH; between the time domain resources of the first type PUCCH and the first time domain unit of the physical uplink shared channel PUSCH In the case of overlapping, the method described in FIG. 8a is performed; in the case where the time domain resource of the second type PUCCH overlaps with the first time domain unit of the physical uplink shared channel PUSCH, the method as shown in FIG. 9a, FIG. 10a, The method described in Figure 11a or Figure 12a.

In one embodiment, the processing module 1302 is configured to determine the first type of physical uplink control channel PUCCH and the second type of PUCCH; between the time domain resources of the first type PUCCH and the first time domain unit of the physical uplink shared channel PUSCH In the case of overlapping, perform the method described in FIG. 8a, FIG. 9a, FIG. 10a or FIG. 12a; in the case where the time domain resources of the second type PUCCH overlap with the first time domain unit of the physical uplink shared channel PUSCH , and the method described in any one of FIG. 11a is performed.

In one embodiment, the processing module 1302 is configured to determine the first type of physical uplink control channel PUCCH and the second type of PUCCH; between the time domain resources of the first type PUCCH and the first time domain unit of the physical uplink shared channel PUSCH In the case of overlapping, perform the method described in FIG. 8a, FIG. 9a, FIG. 10a or FIG. 12a; in the case where the time domain resources of the second type PUCCH overlap with the first time domain unit of the physical uplink shared channel PUSCH , if the first time domain unit is configured to send the demodulation reference signal DMRS with the first number of resources, the method described in FIG. 11a is performed; in the time domain resources of the second type PUCCH and the physical uplink shared channel PUSCH In the case that the first time-domain units of the two overlap, if the first time-domain unit is configured not to transmit the DMRS, the method described in FIG. 8a, FIG. 9a, FIG. 10a or FIG. 12a is performed.

In a possible implementation, the first type of PUCCH is a PUCCH corresponding to a hybrid acknowledgment HARQ ACK corresponding to a first physical downlink shared channel PDSCH, and the first PDSCH is a PDSCH that carries downlink control information scheduled by DCI;

Or, the first type of PUCCH is any one of the PUCCH of the HARQ ACK corresponding to the first PDSCH and the PUCCH of the HARQ ACK corresponding to the semi-persistent scheduling SPS PDSCH;

Or, the PUCCH of the first type is any one of the PUCCH of the HARQ ACK corresponding to the first PDSCH and the PUCCH of the HARQ ACK corresponding to the DCI;

Or, the first type of PUCCH is any one of the PUCCH corresponding to the HARQ ACK of the first PDSCH, the PUCCH carrying the HARQ ACK corresponding to the SPS PDSCH, and the PUCCH carrying the HARQ ACK corresponding to the DCI.

In a possible implementation, the second type of PUCCH is at least one type of PUCCH other than the first type of PUCCH.

For a more detailed description of the above communication module 1301 and the processing module 1302, reference may be made to the relevant descriptions in the above method embodiments, which are not described herein again.

As shown in FIG. 14 , the communication device 1400 includes a processor 1410 and an interface circuit 1420 . The processor 1410 and the interface circuit 1420 are coupled to each other. It can be understood that the interface circuit 1420 can be a transceiver or an input-output interface. Optionally, the communication apparatus 1400 may further include a memory 1430 for storing instructions executed by the processor 1410 or input data required by the processor 1410 to execute the instructions or data generated after the processor 1410 executes the instructions.

When the communication device 1400 is used to implement the methods in the above method embodiments, the processor 1410 is used to execute the functions of the above processing module 1302, the interface circuit 1420 is used to execute the functions of the above communication module 1301, and the memory 1430 stores data.

When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments. The terminal device chip receives information from other modules (such as radio frequency modules or antennas) in the terminal device, and the information is sent by the access network device to the terminal device; or, the terminal device chip sends information to other modules (such as radio frequency) in the terminal device. module or antenna) to send information, the information is sent by the terminal equipment to the access network equipment.

It can be understood that the processor in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), application-specific integrated circuits (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor.

The method steps in the embodiments of the present application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions. Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (programmable ROM) , PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable read-only memory (electrically EPROM, EEPROM), registers, hard disks, removable hard disks, CD-ROMs or known in the art in any other form of storage medium. An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and storage medium may reside in an ASIC. In addition, the ASIC may be located in the access network equipment or in the terminal equipment. Of course, the processor and the storage medium may also exist in the access network device or the terminal device as discrete components.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer program or instructions may be stored in or transmitted over a computer-readable storage medium. The computer-readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server that integrates one or more available media. The usable media can be magnetic media, such as floppy disks, hard disks, magnetic tapes; optical media, such as DVD; and semiconductor media, such as solid state disks (SSD).

In the various embodiments of the present application, if there is no special description or logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referred to each other, and the technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

In this application, "at least one" means one or more, and "plurality" means two or more. "And/or", which describes the association relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural. In the text description of this application, the character "/" generally indicates that the related objects are a kind of "or" relationship; in the formula of this application, the character "/" indicates that the related objects are a kind of "division" Relationship.

It can be understood that, the various numbers and numbers involved in the embodiments of the present application are only for the convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the sequence numbers of the above processes does not imply the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic.

Embodiments of the present application further provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed, the methods performed by the terminal device in the above method embodiments are implemented.

Embodiments of the present application further provide a computer program product, where the computer program product includes a computer program, and when the computer program is executed, the method performed by the terminal device in the above method embodiment is realized.

It should be noted that, for the sake of simple description, the foregoing method embodiments are all expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the described action sequence. Because in accordance with the present application, certain steps may be performed in other orders or concurrently. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

The descriptions of the embodiments provided in this application may refer to each other, and the descriptions of the various embodiments have their own emphasis. For the parts that are not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. For the convenience and brevity of description, for example, regarding the functions of the devices and devices provided in the embodiments of the present application, and the steps performed by them, reference may be made to the relevant descriptions of the method embodiments of the present application. There may be mutual reference, combination or reference.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. scope.

Claims (23)

1. A method for sending uplink control information UCI, characterized in that the method comprises:

   determining a first time domain unit of the physical uplink shared channel PUSCH, where the first time domain unit is configured to send a demodulation reference signal DMRS with a first resource quantity or not to send the DMRS;

   Under the condition that the time domain resources of the first time domain unit and the physical uplink control channel PUCCH do not overlap, the PUSCH is sent, and the DMRS is sent on the first time domain unit with the first resource quantity or determine not to send the DMRS;

   In the case where the time domain resources of the first time domain unit and the physical uplink control channel PUCCH carrying UCI overlap, the UCI is carried on the first time domain unit and sent, and the UCI is carried in the first time domain The unit sends the DMRS with a second resource quantity; the second resource quantity is greater than the first resource quantity.
2. The method according to claim 1, wherein the method further comprises:

   Determine a second time domain unit, the interval between the second time domain unit and the first time domain unit is k×N time domain units, the k is a positive integer greater than or equal to 1, and the N is A positive integer greater than or equal to 2, the second time-domain unit is a time-domain unit for transmitting the DMRS with the second resource quantity.
3. The method according to claim 1 or 2, wherein the UCI is carried on the UCI in a case where the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying the UCI overlap. sending on the PUSCH, and sending the DMRS on the first time domain unit with a second number of resources, including:

   In the case where the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying UCI overlap, if the interval between the first time domain unit and the third time domain unit is greater than the first value, then sending the UCI carried on the PUSCH, and sending the DMRS on the first time domain unit with a second number of resources;

   The third time domain unit is the first time domain unit configured to transmit the DMRS with the second resource quantity after the first time domain unit.
4. The method according to claim 1 or 2, wherein the UCI is carried on the UCI in a case where the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying the UCI overlap. sending on the PUSCH, and sending the DMRS on the first time domain unit with a second number of resources, including:

   In the case where the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying UCI overlap, if the interval between the first time domain unit and the fourth time domain unit is greater than the second value, then sending the UCI carried on the PUSCH, and sending the DMRS on the first time domain unit with a second number of resources;

   The fourth time-domain unit is the last time-domain unit configured to transmit the DMRS with the second resource quantity before the first time-domain unit.
5. The method according to any one of claims 1 to 4, wherein the first time domain unit is the first one of at least one time domain unit of the PUSCH overlapping the time domain resource of the PUCCH time domain unit.
6. A method for sending uplink control information UCI, characterized in that the method comprises:

   determining a first time domain unit of the physical uplink shared channel PUSCH, where the first time domain unit is configured to send a demodulation reference signal DMRS with a first resource quantity or not to send the DMRS;

   In the case where the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying the UCI overlap, the UCI is carried on the third time domain unit of the PUSCH and sent;

   The third time-domain unit is the first time-domain unit configured to transmit the DMRS with a second resource quantity after the first time domain unit, and the second resource quantity is greater than the first resource quantity.
7. The method according to claim 6, wherein the sending the UCI carried on the third time domain unit of the PUSCH comprises:

   If the interval between the first time domain unit and the third time domain unit is less than or equal to the first value, the UCI is carried on the third time domain unit of the PUSCH for transmission.
8. The method according to claim 6, wherein the sending the UCI carried on the third time domain unit of the PUSCH comprises:

   If the interval between the first time domain unit and the fourth time domain unit is greater than the second value, the UCI is carried on the third time domain unit of the PUSCH for transmission, and the fourth time domain unit is The last time-domain unit before the first time-domain unit is configured to transmit the DMRS with the second resource quantity.
9. The method according to any one of claims 6 to 8, wherein the first time domain unit is the first one of at least one time domain unit of the PUSCH overlapping the time domain resource of the PUCCH time domain unit.
10. A method for sending uplink control information UCI, characterized in that the method comprises:

    determining a first time domain unit of the physical uplink shared channel PUSCH, where the first time domain unit is configured to send a demodulation reference signal DMRS with a first resource quantity or not to send the DMRS;

    In the case where the first time domain unit and the time domain resources of the physical uplink control channel PUCCH carrying the UCI overlap, the UCI is carried on the first time domain unit of the PUSCH and sent, and sent on the The DMRS is sent on the first time domain unit with the configured first resource quantity or it is determined not to send the DMRS.
11. The method according to claim 10, wherein the sending the UCI carried on the first time domain unit of the PUSCH comprises:

    Determine the position of the first resource element RE in the first time domain unit according to the symbol position of the DMRS with the second resource quantity in the fifth time domain unit, where the fifth time domain unit is one of the PUSCHs configured sending the time domain unit of the DMRS with a second resource quantity, the second resource quantity being greater than the first resource quantity;

    The UCI is carried on the first RE in the first time domain resource and sent.
12. The method according to claim 10, wherein the sending the UCI carried on the first time domain unit of the PUSCH comprises:

    If the first time-domain unit of the PUSCH is configured to send the DMRS with a first number of resources, the UCI is carried on the second resource element RE in the first time-domain unit of the PUSCH, and the UCI is carried on the RE in the first time domain unit of the PUSCH. The second RE of the PUSCH transmits the UCI; the second RE includes at least one RE on a symbol following the DMRS symbol in the first time domain unit.
13. The method according to any one of claims 10 to 12, wherein the sending the UCI carried on the first time domain unit of the PUSCH comprises:

    If the interval between the first time domain unit and the fourth time domain unit is less than or equal to the second value, the UCI is carried on the first time domain unit of the PUSCH for transmission, and the fourth time domain unit is sent. The time-domain unit is the last time-domain unit configured to transmit the DMRS with the second resource quantity before the first time-domain unit.
14. The method according to any one of claims 10 to 13, wherein the first time domain unit is the first one of at least one time domain unit of the PUSCH overlapping the time domain resource of the PUCCH time domain unit.
15. A method for sending uplink control information UCI, characterized in that the method comprises:

    determining the first type of physical uplink control channel PUCCH and the second type of PUCCH;

    In the case where the first time domain unit of the physical uplink shared channel PUSCH overlaps the time domain resources of the PUCCH, the PUCCH is determined to be the second type of PUCCH, and the method according to any one of claims 1 to 14 is performed. .
16. A method for sending uplink control information UCI, characterized in that the method comprises:

    determining the first type of physical uplink control channel PUCCH and the second type of PUCCH;

    In the case that the time domain resource of the first type of PUCCH overlaps with the first time domain unit of the physical uplink shared channel PUSCH, executing the method according to any one of claims 1 to 5;

    In the case that the time domain resources of the second type PUCCH overlap with the first time domain unit of the physical uplink shared channel PUSCH, the method according to any one of claims 6 to 13 is performed.
17. A method for sending uplink control information UCI, characterized in that the method comprises:

    determining the first type of physical uplink control channel PUCCH and the second type of PUCCH;

    In the case that the time domain resource of the first type of PUCCH overlaps with the first time domain unit of the physical uplink shared channel PUSCH, executing the method according to any one of claims 1 to 9;

    The method according to any one of claims 10 to 13 is performed in the case that the time domain resource of the second type PUCCH overlaps with the first time domain unit of the physical uplink shared channel PUSCH.
18. A method for sending uplink control information UCI, characterized in that the method comprises:

    determining the first type of physical uplink control channel PUCCH and the second type of PUCCH;

    In the case that the time domain resource of the first type of PUCCH overlaps with the first time domain unit of the physical uplink shared channel PUSCH, executing the method according to any one of claims 1 to 9;

    In the case where the time domain resources of the second type PUCCH overlap with the first time domain unit of the physical uplink shared channel PUSCH, if the first time domain unit is configured to transmit the demodulation reference signal DMRS with the first resource quantity, then execute the method according to any one of claims 6 to 13;

    In the case that the time domain resource of the second type PUCCH overlaps with the first time domain unit of the physical uplink shared channel PUSCH, if the first time domain unit is configured not to transmit the DMRS, the method as claimed in claim 1 is executed. The method of any one of ~9.
19. The method according to any one of claims 15 to 18, characterized in that:

    The first type of PUCCH is a PUCCH corresponding to a hybrid acknowledgment HARQ ACK corresponding to the first physical downlink shared channel PDSCH, and the first PDSCH is a PDSCH that carries downlink control information scheduled by DCI;

    or,

    The first type of PUCCH is any one of the PUCCH of the HARQ ACK corresponding to the first PDSCH and the PUCCH of the HARQ ACK corresponding to the semi-persistent scheduling SPS PDSCH;

    or,

    The first type of PUCCH is any one of the PUCCH of the HARQ ACK corresponding to the first PDSCH and the PUCCH of the HARQ ACK corresponding to the DCI;

    or,

    The first type of PUCCH is any one of the PUCCH corresponding to the HARQ ACK of the first PDSCH, the PUCCH carrying the HARQ ACK corresponding to the SPS PDSCH, and the PUCCH carrying the HARQ ACK corresponding to the DCI.
20. The method according to claim 19, wherein the second type of PUCCH is at least one type of PUCCH other than the first type of PUCCH.
21. A communication device, characterized by comprising a module for executing the method according to any one of claims 1 to 5; or comprising a module for executing the method according to any one of claims 6 to 9 Or, it is included in the module for executing the method according to any one of claims 10 to 14; or, it is included in the module for executing the method according to any one of claims 15 to 20.
22. A communication device, characterized by comprising a processor and an interface circuit, the interface circuit being configured to receive signals from other communication devices other than the communication device and transmit to the processor or transfer signals from the processor The signal is sent to other communication devices other than the communication device, and the processor is used to implement the claims 1-5, claims 6-9, claims 10-14 or claims through logic circuits or executing code instructions The method of any one of 15-20.
23. A computer-readable storage medium, characterized in that a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, the invention as claimed in claims 1 to 5 and 6 to 9 is implemented. . The method of any one of claims 10-14 or claims 15-20.

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