Transmission method, terminal equipment and network equipment

Abstract

The invention relates to a transmission method, terminal equipment and network equipment. The transmission method comprises the following steps: the terminal equipment acquires the number of PUCCH repeated transmission times before exclusive PUCCH resource configuration; according to the embodiment of the invention, the number of PUCCH repeated transmissions before the exclusive PUCCH resource configuration can be obtained, and the coverage performance of a communication system is improved.

Description

[0001] This application is a divisional application of the patent application filed on April 26, 2022, with application number 202280092521.7 and application name “Transmission method, terminal device and network device”. Technical Field

[0002] The present application relates to the field of communications, and more specifically, to a transmission method, a terminal device, and a network device. Background Art

[0003] Before the Radio Resource Control (RRC) connection is established, the terminal cannot obtain the dedicated physical uplink control channel (PUCCH) resource configuration through high-level signaling. Therefore, the cell common PUCCH resources can be determined by pre-defining a set of common PUCCH resources. After the RRC connection is established, PUCCH repeated transmission can be supported. However, some scenarios that require PUCCH repeated transmission, such as before the RRC connection is established, do not support PUCCH repeated transmission. Summary of the invention

[0004] The embodiments of the present application provide a transmission method, a terminal device and a network device, which can obtain the number of PUCCH repetition transmissions before the exclusive PUCCH resource is configured.

[0005] An embodiment of the present application provides a transmission method, including: a terminal device obtains the number of PUCCH repetition transmissions before exclusive PUCCH resource configuration.

[0006] An embodiment of the present application provides a transmission method, including: a network device sends first indication information, where the first indication information is used to indicate the number of PUCCH repetition transmissions before dedicated PUCCH resource configuration.

[0007] An embodiment of the present application provides a terminal device, including: a processing unit, used to obtain the number of PUCCH repetition transmissions before exclusive PUCCH resource configuration.

[0008] An embodiment of the present application provides a network device, including: a first sending unit, used to send first indication information, wherein the first indication information is used to indicate the number of PUCCH repeated transmissions before dedicated PUCCH resource configuration.

[0009] The embodiment of the present application provides a terminal device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the above-mentioned transmission method.

[0010] The embodiment of the present application provides a network device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the network device executes the above-mentioned transmission method.

[0011] An embodiment of the present application provides a chip for implementing the above-mentioned transmission method.

[0012] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned transmission method.

[0013] An embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed by a device, the device executes the above-mentioned transmission method.

[0014] An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the above-mentioned transmission method.

[0015] An embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the above-mentioned transmission method.

[0016] In the embodiment of the present application, the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration can be obtained, and then the PUCCH can be repeatedly transmitted before the dedicated PUCCH resource configuration, thereby improving the coverage performance of the communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of an application scenario according to an embodiment of the present application.

[0018] Figure 2 It is a schematic flow chart of a transmission method according to an embodiment of the present application.

[0019] Figure 3 is a schematic flowchart of a transmission method according to another embodiment of the present application.

[0020] Figure 4 It is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0021] Figure 5 It is a schematic block diagram of a terminal device according to another embodiment of the present application.

[0022] Figure 6 is a schematic block diagram of a network device according to an embodiment of the present application.

[0023] Figure 7 is a schematic block diagram of a network device according to another embodiment of the present application.

[0024] Figure 8 It is a schematic diagram of an example of frequency hopping within a time slot according to an embodiment of the present application.

[0025] Fig. 9 It is a schematic diagram of an example of frequency hopping between time slots according to an embodiment of the present application.

[0026] Fig.10 It is a schematic block diagram of a communication device according to an embodiment of the present application.

[0027] Fig.11 is a schematic block diagram of a chip according to an embodiment of the present application.

[0028] Fig.12 It is a schematic block diagram of a communication system according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0030] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0031] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0032] In one implementation, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0033] In one embodiment, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0034] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0035] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0036] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0037] In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0038] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0039] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (EvolutionalNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0040] As an example but not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0041] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0042] Figure 1 A communication system 100 is exemplarily shown. The communication system includes a network device 110 and two terminal devices 120. In one embodiment, the communication system 100 may include multiple network devices 110, and each network device 110 may include other number of terminal devices 120 within its coverage area, which is not limited in the present embodiment.

[0043] In one implementation, the communication system 100 may also include other network entities such as a mobility management entity (MME), an access and mobility management function (AMF), etc., which is not limited in the embodiments of the present application.

[0044] Among them, the network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks for communicating with the access network equipment. The access network equipment may be an evolutionary base station (evolutional node B, referred to as eNB or e-NodeB) macro base station, micro base station (also called "small base station"), micro-micro base station, access point (AP), transmission point (TP) or new generation base station (new generation Node B, gNodeB) in a long-term evolution (LTE) system, a next-generation (mobile communication system) (next radio, NR) system or an authorized auxiliary access long-term evolution (LAA-LTE) system.

[0045] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system shown as an example, the communication equipment may include network equipment and terminal equipment with communication functions. The network equipment and terminal equipment may be specific equipment in the embodiments of the present application and will not be repeated here. The communication equipment may also include other equipment in the communication system, such as network controllers, mobile management entities and other network entities, which are not limited to the embodiments of the present application.

[0046] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0047] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0048] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0049] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all belong to the protection scope of the embodiments of the present application.

[0050] 1. Determination of cell public PUCCH resources:

[0051] Before the Radio Resource Control (RRC) connection is established, the UE cannot obtain dedicated PUCCH resource configuration through high-level RRC signaling. Therefore, 16 groups of common PUCCH resource sets are predefined in the initial uplink bandwidth segment (Bandwidth part, BWP) in the form of index values ​​in Table 1 for sending hybrid automatic repeat request-positive confirmation (HARQ-ACK) information.

[0052] Table 1. PUCCH resource set before dedicated PUCCH resource configuration

[0053]

[0054]

[0055] Each group of common PUCCH resource sets corresponds to a row in Table 1, that is, corresponds to a PUCCH format, a start symbol, a number of symbols, a physical resource block (PRB) offset and a cyclic shift (CS) index set.

[0056] The base station can configure 1 row in Table 1 in the cell-level PUCCH parameters. The UE can determine the cell-common PUCCH resources based on the configured index value and in combination with Table 1. Before the UE is configured with dedicated PUCCH resources (also referred to as dedicated PUCCH resources), such as in the initial access phase, the configured cell-common PUCCH resources are used to send HARQ-ACK information.

[0057] 2. PUCCH repeated transmission process:

[0058] After the RRC connection is established, the UE can be instructed to use a PUCCH resource in If the PUCCH resource is indicated by the downlink control information (DCI) format and contains the high-level parameter PUCCH-nrofSlots, then Provided by PUCCH-nrofSlots. Otherwise, Provided by the high-level parameter nrofSlots.

[0059] for UE PUCCH is repeated in each time slot to transmit uplink control information (UCI). The PUCCH transmissions on each time slot have the same number of consecutive symbols, which can be provided by the higher-layer parameter nrofSymbols. The PUCCH transmissions on different time slots have the same starting symbol, which can be provided by the higher-level parameter startingSymbolIndex. The UE can configure whether to perform frequency hopping for PUCCH transmissions between different time slots by the higher-level parameter interslotFrequencyHopping.

[0060] If the UE is configured to perform frequency hopping for PUCCH transmissions between different time slots. For example, the UE may perform frequency hopping in each time slot. For another example, the UE may send PUCCH starting from the first PRB provided by the high-level parameter startingPRB in even-numbered time slots and starting from the second PRB provided by the high-level parameter secondHopPRB in odd-numbered time slots. The time slot indicated to the UE for the first PUCCH transmission is 0, and this Each time slot in the time slots is counted, regardless of whether the UE sends PUCCH in this time slot. For another example, the UE may not expect the PUCCH transmission configured in the time slot to perform frequency hopping.

[0061] If the UE is not configured to perform frequency hopping for PUCCH transmission between different time slots, and if the UE is configured to perform frequency hopping for PUCCH transmission within a time slot, the frequency hopping pattern between the first PRB and the second PRB in each time slot is the same.

[0062] For PUCCH transmission on a time slot, if the UE finds that the number of symbols available for PUCCH transmission is less than the number of symbols configured by the higher-layer parameter nrofSymbols, the UE does not send PUCCH on this time slot.

[0063] Related technologies do not support repeated PUCCH transmission before RRC connection establishment. However, in communication scenarios with limited coverage performance, such as NTN systems, a single PUCCH transmission may not meet coverage requirements. Especially in the initial access phase, if the PUCCH carrying HARQ-ACK information cannot be successfully received, the UE will be unable to access the network, which will have a significant impact on system performance. Therefore, it is necessary to enhance the PUCCH transmission before RRC connection establishment, such as introducing a PUCCH repeated transmission mechanism before RRC connection establishment to improve its coverage performance.

[0064] Figure 2 is a schematic flow chart of a transmission method 200 according to an embodiment of the present application. The method may optionally be applied to Figure 1 The system shown in the figure is not limited thereto. The method includes at least part of the following contents.

[0065] S210. The terminal device obtains the number of PUCCH repetition transmissions before exclusive PUCCH resource configuration.

[0066] In the embodiment of the present application, before the dedicated PUCCH resource configuration may include, for example, before the RRC connection is established, the initial access process / stage, etc. In certain scenarios such as the NTN system or other systems that require PUCCH repetition transmission before the dedicated PUCCH resource configuration, the terminal device can obtain the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration. In the embodiment of the present application, the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration may also be referred to as the number of PUCCH repetition transmissions before the RRC connection is established, the number of PUCCH repetition transmissions before the RRC connection, the number of PUCCH repetition transmissions in the initial access process / stage, etc.

[0067] For example, the terminal device may receive indication information from the network device, and obtain the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration based on the indication information. For another example, the terminal device may obtain information related to the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration, and calculate the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration based on the obtained information.

[0068] In an embodiment of the present application, after the terminal device obtains the number of PUCCH repetition transmissions before the dedicated PUCCH resource is configured, it can repeatedly transmit the PUCCH before the dedicated PUCCH resource is configured according to the number of PUCCH repetition transmissions.

[0069] In one embodiment, the method further includes: the terminal device receiving first indication information, where the first indication information is used to indicate the number of repeated transmissions of the PUCCH.

[0070] In one implementation, the first indication information includes a first common PUCCH resource set index value, and the number of PUCCH repetition transmissions before the terminal device obtains the dedicated PUCCH resource configuration includes:

[0071] The terminal device determines the corresponding number of PUCCH repetition transmissions based on the first public PUCCH resource set index value.

[0072] In one implementation, the first common PUCCH resource set index value has a corresponding number of PUCCH repetition transmissions.

[0073] In one implementation, the first public PUCCH resource set index value is in a first range, and the second public PUCCH resource set index value is in a second range.

[0074] In one implementation, the second public PUCCH resource set index value has no corresponding PUCCH repetition transmission number or the corresponding PUCCH repetition transmission number is equal to 1.

[0075] For example, referring to Table 1, the second range of the second public PUCCH resource set index value may be 0 to 15. The second range may also be set in other ways, which are not specifically limited in the embodiments of the present application.

[0076] In one implementation, if the first range is the same as the second range, the number of PUCCH repetition transmissions corresponding to the first public PUCCH resource set index value is greater than or equal to 1.

[0077] In an embodiment of the present application, a correspondence between a PUCCH resource set index value and the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration may be pre-configured in a table of public PUCCH resource sets. For example, the table may include multiple columns, one of which represents the public PUCCH resource set index and one of which represents the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration. After receiving the first indication information from a network device such as a base station, the terminal device may search the table to obtain the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration according to the first public PUCCH resource set index value in the first indication information.

[0078] In one embodiment, the first range of the first public PUCCH resource set index value may be the same as the second range described above. For example, the first range is 0 to 15. The second public PUCCH resource set may be a traditional public PUCCH resource set, the first public PUCCH resource set index value and the second public PUCCH resource set index value have the same range, and the signaling overhead for configuring the first public PUCCH resource set index value may be the same as the signaling overhead for configuring the traditional public PUCCH resource set index value. For example, the number of bits required for the first indication information may not be added.

[0079] For example, in the table of public PUCCH resource sets, a new column may be added to indicate the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration, and the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration may be greater than or equal to 1. In this way, if the terminal device receives the first public PUCCH resource set index value, the number of PUCCH repetition transmissions in the newly added column corresponding to the first public PUCCH resource set index value may be searched. For example, if the first public PUCCH resource set index value received by the terminal device is 8, the number of PUCCH repetition transmissions in the newly added column corresponding to the index value 8 may be searched, for example, 4, indicating that the PUCCH may be retransmitted 4 times before the dedicated PUCCH resource configuration.

[0080] In one implementation, if the first range is different from the second range, the first public PUCCH resource set index value is greater than the second public PUCCH resource set index value.

[0081] In one embodiment, the number of PUCCH repetition transmissions corresponding to the first public PUCCH resource set index value and the second public PUCCH resource set index value is different. The second public PUCCH resource set may be a traditional public PUCCH resource set, for example, the second public PUCCH resource set index value range is 0-15. The first public PUCCH resource set index value and the second public PUCCH resource set index value have different ranges, for example, the first public PUCCH resource set index value range is 16-18. This is conducive to compatibility with traditional public PUCCH resource configuration methods. The terminal device can determine whether repeated transmission is required based on the range of index values ​​configured by the system message of the network device. For example, if the index value configured by the system message is in the range of 0-15, repeated transmission does not need to be performed, and if the index value configured by the system message is in the range of 16-18, repeated transmission is required.

[0082] In one implementation, the number of PUCCH repetition transmissions corresponding to the first public PUCCH resource set index value is greater than 1.

[0083] In one embodiment, the first range of the first public PUCCH resource set index value may be greater than 15, which is different from the second range of 0 to 15 mentioned above. For example, in the table of public PUCCH resource sets, new rows and columns may be added in addition to the second public PUCCH resource set, wherein the newly added rows represent the first public PUCCH resource set. The parameters of the first public PUCCH resource set may be similar to those of the second public PUCCH resource set. The newly added column is used to indicate the number of PUCCH repeated transmissions. The index value of the second public PUCCH resource set is in the second range, and the value of the newly added column corresponding to the index value may be empty or 1, indicating that the number of PUCCH repeated transmissions is 1, that is, no PUCCH repeated transmission is performed. The index value of the first public PUCCH resource set is in the first range, and the value of the newly added column corresponding to the index value may be greater than 1, thereby indicating the number of PUCCH repeated transmissions before the exclusive PUCCH resource configuration. For example, if the first public PUCCH resource set index value received by the terminal device is 16, the PUCCH repetition transmission number in the newly added column corresponding to the row where the index value 16 is located can be found, for example, 2, indicating that the PUCCH can be retransmitted twice before the dedicated PUCCH resource is configured.

[0084] In one embodiment, the first indication information is carried by a system message. For example, the terminal device may receive a system message from a network device such as a base station, such as SIB1 in the system message, and the SIB1 may carry the first indication information to indicate the number of times the terminal device may repeat transmission of the PUCCH before the dedicated PUCCH resource is configured.

[0085] In one embodiment, the common PUCCH configuration parameter of SIB1 in the system message carries the first indication information. For example, the common PUCCH configuration parameter of SIB1 in the system message can introduce a new system parameter specifically used to indicate the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration. For example, the common PUCCH configuration parameter carried in SIB1 sent by the base station introduces NTN-nrofSlots={2,4,8}. The value of NTN-nrofSlots can indicate the number of PUCCH repetition transmissions. For example, the value of the common PUCCH configuration parameter is 2, indicating that the number of PUCCH repetition transmissions is 2. In this way, the base station can flexibly configure the number of PUCCH repetition transmissions and common PUCCH resources.

[0086] In one implementation, the first indication information is carried by DCI. For example, the DCI may directly carry the number of PUCCH repetition transmissions, or may carry information related to the number of PUCCH repetition transmissions, based on which the number of PUCCH repetition transmissions may be obtained. In this way, a network device such as a base station may configure the number of PUCCH repetition transmissions for each UE individually.

[0087] In one embodiment, the first indication information carried by the DCI is a PUCCH resource indication field. For example, Table 1 predefines 16 groups of common PUCCH resource sets in the form of index values, and each group of PUCCH resource sets further includes 16 PUCCH resources. The 3-bit PUCCH resource indication field in the DCI can not only indicate the PUCCH resources, but also indicate the number of PUCCH repeated transmissions. The method of indicating the number of PUCCH repeated transmissions can be explicit or implicit.

[0088] In one embodiment, the value of the PUCCH resource indication field has a corresponding number of PUCCH repetition transmissions. In an embodiment of the present application, a mapping relationship between the value of the PUCCH resource indication field and the number of PUCCH repetition transmissions can be preset. For example, the value of the PUCCH resource indication field is "010", and the corresponding number of PUCCH repetition transmissions is 3; the value of the PUCCH resource indication field is "011", and the corresponding number of PUCCH repetition transmissions is 4. After the terminal device receives the DCI carrying the PUCCH resource indication field, it can look up the corresponding number of PUCCH repetition transmissions according to the value of the PUCCH resource indication field.

[0089] In one embodiment, the value of the PUCCH resource indication field is used to determine a common PUCCH resource index value, and the common PUCCH resource index value has a corresponding number of PUCCH repetition transmissions. In an embodiment of the present application, after the terminal device receives the DCI carrying the PUCCH resource indication field, the common PUCCH resource index value can be calculated according to the value of the PUCCH resource indication field. After calculating the common PUCCH resource index value, the corresponding number of PUCCH repetition transmissions can be found according to the common PUCCH resource index value.

[0090] In one embodiment, the common PUCCH resource index value is calculated based on the value of the PUCCH resource indication field, the number of control channel elements (CCE) in the control resource set where the DCI is located, and the index value of the first CCE occupied by the DCI. For example, the value of the PUCCH resource indication field, the number of CCEs in the control resource set where the DCI is located, and the index value of the first CCE occupied by the DCI can be used to construct a calculation formula for the PUCCH resource index, and the common PUCCH resource index value is calculated according to the calculation formula. For example, the calculation formula can be:

[0091]

[0092] Among them, rPUCCH is the PUCCH resource index value, NCCE is the number of CCEs in the control resource set where the DCI is located, nCCE,0 is the index value of the first CCE occupied by the DCI, and ΔPRI is the value of the PUCCH resource indication field in the DCI, for example, indicated by 3 bits.

[0093] In one implementation, the first indication information is carried by the random access response (RAR) uplink authorization and / or the temporary cell radio network temporary identifier (TC-RNTI) scrambled cyclic redundancy check (CRC) DCI of the physical uplink shared channel (PUSCH) message Msg3 scheduling the random access process. In this way, the UE can obtain the indication of the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration based on the repetition transmission mechanism of Msg3.

[0094] In one implementation, the first indication information carried by the RAR uplink grant and / or the DCI of the TC-RNTI scrambled CRC scheduling Msg3 PUSCH is the number of repeated transmissions of Msg3.

[0095] In one implementation, the number of PUCCH repetition transmissions is calculated based on the number of Msg3 repetition transmissions.

[0096] In one implementation, the number of PUCCH repetition transmissions is equal to the number of Msg3 repetition transmissions divided by a set value and rounded up.

[0097] In an embodiment of the present application, the terminal device receives the number of repeated transmissions of Msg3 from the base station. Specifically, the terminal device can obtain the number of repeated transmissions of Msg3 by scheduling the RAR uplink grant of Msg3 PUSCH and / or the DCI of TC-RNTI scrambled CRC. The terminal device can calculate the number of repeated transmissions of PUCCH before the dedicated PUCCH resource configuration based on the number of repeated transmissions of Msg3. For example, the terminal device can divide the number of repeated transmissions of Msg3 by the set value, and then round up to obtain the number of repeated transmissions of PUCCH before the dedicated PUCCH resource configuration.

[0098] In one embodiment, the method further includes: when the terminal device needs to repeat transmission, repeatedly transmitting the PUCCH according to the number of repeated transmissions of the PUCCH. For example, the terminal device may need to repeatedly transmit the PUCCH before the dedicated PUCCH resource is configured due to reasons such as cell coverage performance. In this case, the terminal device may repeatedly transmit the PUCCH before the dedicated PUCCH resource is configured according to the number of repeated transmissions of the PUCCH before the dedicated PUCCH resource is configured as determined in any of the above methods.

[0099] In one embodiment, if the terminal device obtains that the number of PUCCH repetition transmissions before the dedicated PUCCH resource is configured is N, then before the dedicated PUCCH resource is configured, the terminal device is instructed to perform PUCCH repetition transmissions on N time slots.

[0100] In one implementation, if the terminal device is instructed to perform PUCCH repeated transmission on N time slots before dedicated PUCCH resources are configured, the manner in which the terminal device performs repeated transmission may include: the terminal device repeats PUCCH transmission on the N time slots.

[0101] In one implementation, the PUCCH transmissions on the N time slots have the same number of consecutive symbols, which is determined by the number of symbols corresponding to the common PUCCH resource set index value indicated by a network device, such as a base station.

[0102] In one implementation, the PUCCH transmissions on the N time slots have the same starting symbol, which is determined by a starting symbol index corresponding to a common PUCCH resource set index value indicated by a network device, such as a base station.

[0103] In one embodiment, if the terminal device performs inter-slot frequency hopping during PUCCH repetitive transmission, the terminal device performs frequency hopping in each of the N time slots.

[0104] For example, the terminal device sends PUCCH starting from the first PRB in the even-numbered time slots among the N time slots, and sends PUCCH starting from the second PRB in the odd-numbered time slots among the N time slots. The time slot indicated by the network device to the terminal device for the first PUCCH transmission can be recorded as 0, and each time slot in the N time slots is counted, regardless of whether the terminal device sends PUCCH in this time slot. The indexes of the first PRB and the second PRB can be determined according to the common PUCCH resource PRB index determination formula in the relevant technology.

[0105] In one embodiment, if the terminal device performs intra-time slot frequency hopping during PUCCH repetitive transmission, the frequency hopping pattern between the first PRB and the second PRB in each time slot of the N time slots is the same for the terminal device, wherein the indexes of the first PRB and the second PRB can be determined according to the common PUCCH resource PRB index determination formula in the related art.

[0106] In one embodiment, for PUCCH transmission on a time slot, if the terminal device finds that the number of symbols available for PUCCH transmission is less than the number of symbols corresponding to the common PUCCH resource set index value indicated by the network device, such as the base station, the terminal device does not send PUCCH on the time slot.

[0107] In one embodiment, if the terminal device wants to send PUCCH in N time slots, but does not send the PUCCH in one of the time slots due to a collision with another PUCCH transmission, the terminal device counts this time slot into the N time slots.

[0108] In one embodiment, the method further includes: the terminal device receiving second indication information, where the second indication information is used to indicate a frequency hopping mode for repeated transmission of the PUCCH by the terminal device.

[0109] In an embodiment of the present application, the terminal device may use a frequency hopping method to repeatedly transmit the PUCCH. The specific frequency hopping method may be indicated to the terminal device by a network device such as a base station. For example, the terminal device receives system information from the network device, and the system information includes candidate frequency hopping methods for repeated transmission of the PUCCH. For example, the candidate frequency hopping methods for repeated transmission of the PUCCH are carried in SIB1. Then, the network device can flexibly select a frequency hopping method to configure for the terminal device, so as to obtain the optimal frequency hopping performance.

[0110] In one implementation, the frequency hopping mode includes at least one of the following:

[0111] Frequency hopping within a time slot;

[0112] Frequency hopping between time slots.

[0113] In one implementation, the frequency hopping within the time slot includes: a time slot includes multiple frequency hopping units, different frequency hopping units in the same time slot correspond to different frequency domain resources, a PUCCH is divided into multiple parts, and each part is transmitted using a frequency hopping unit in the time slot.

[0114] In an embodiment of the present application, one PUCCH may correspond to a PUCCH transmission on a time slot. If the terminal device repeatedly transmits the PUCCH by frequency hopping within a time slot, one PUCCH may be divided into multiple parts, and different parts may be transmitted using different frequency hopping units within a time slot. For example, if each time slot includes a first frequency hopping unit and a second frequency hopping unit, the PUCCH is divided into part A and part B, and part A may be transmitted in the first frequency hopping unit of time slot 0, and part B may be transmitted in the second frequency hopping unit. Furthermore, if the number of repeated transmissions is 3 times, part A may continue to be transmitted in the first frequency hopping unit of time slot 1, and part B may be transmitted in the second frequency hopping unit; part A may be transmitted in the first frequency hopping unit of time slot 2, and part B may be transmitted in the second frequency hopping unit.

[0115] In one implementation, the inter-time slot frequency hopping includes: one time slot includes one frequency hopping unit, the frequency hopping units of adjacent time slots correspond to different frequency domain resources, and one PUCCH is transmitted using one frequency hopping unit of one time slot.

[0116] In an embodiment of the present application, if the terminal device repeatedly transmits the PUCCH by means of frequency hopping between time slots, the frequency hopping units of adjacent time slots correspond to different frequency domain resources. For example, the first frequency hopping unit of time slot 0 corresponds to frequency domain resource F1, the second frequency hopping unit of time slot 1 corresponds to frequency domain resource F2, the first frequency hopping unit of time slot 2 corresponds to frequency domain resource F1, and the second frequency hopping unit of time slot 3 corresponds to frequency domain resource F2. If a certain PUCCH needs to be transmitted four times, the PUCCH can be transmitted in the first frequency hopping unit of time slot 0, the PUCCH can be transmitted in the second frequency hopping unit of time slot 1, the first frequency hopping unit of time slot 2, and the second frequency hopping unit of time slot 3.

[0117] In an embodiment of the present application, a terminal device can obtain the number of PUCCH repetition transmissions before dedicated PUCCH resource configuration, for example, before RRC connection establishment, initial access process / stage, etc., and then the terminal device can repeatedly transmit PUCCH before dedicated PUCCH resource configuration, thereby improving the coverage performance of the communication system.

[0118] Figure 3 is a schematic flow chart of a transmission method 300 according to an embodiment of the present application. The method may optionally be applied to Figure 1The system shown in the figure is not limited thereto. The method includes at least part of the following contents.

[0119] S310. The network device sends first indication information, where the first indication information is used to indicate the number of PUCCH repetition transmissions before dedicated PUCCH resource configuration.

[0120] In one implementation, the first indication information includes a first common PUCCH resource set index value, and the first common PUCCH resource set index value has a corresponding number of PUCCH repetition transmissions.

[0121] In one implementation, the first public PUCCH resource set index value is in a first range, and the second public PUCCH resource set index value is in a second range.

[0122] In one implementation, if the first range is different from the second range, the first public PUCCH resource set index value is greater than the second public PUCCH resource set index value.

[0123] In one implementation, the number of PUCCH repetition transmissions corresponding to the first public PUCCH resource set index value is greater than 1.

[0124] In one implementation, if the first range is the same as the second range, the number of PUCCH repetition transmissions corresponding to the first public PUCCH resource set index value is greater than or equal to 1.

[0125] In one implementation, the second public PUCCH resource set index value has no corresponding PUCCH repetition transmission number or the corresponding PUCCH repetition transmission number is equal to 1.

[0126] In one implementation, the first indication information is carried via a system message.

[0127] In one implementation, the common PUCCH configuration parameter in the system message carries the first indication information.

[0128] In one implementation, the first indication information is carried by downlink control information DCI.

[0129] In one implementation, the first indication information carried by the DCI is a PUCCH resource indication field.

[0130] In one implementation, the value of the PUCCH resource indication field has a corresponding number of PUCCH repetition transmissions.

[0131] In one implementation, the value of the PUCCH resource indication field is used to determine a common PUCCH resource index value, and the common PUCCH resource index value has a corresponding number of PUCCH repetition transmissions.

[0132] In one implementation, the common PUCCH resource index value is calculated based on the value of the PUCCH resource indication field, the number of CCEs in the control resource set where the DCI is located, and the index value of the first CCE occupied by the DCI.

[0133] In one implementation, the first indication information is carried by a RAR uplink grant and / or a DCI of a TC-RNTI scrambled CRC in a message Msg3 PUSCH that schedules a random access process.

[0134] In one implementation, the first indication information carried by the RAR uplink grant and / or the DCI of the TC-RNTI scrambled CRC scheduling Msg3 PUSCH is the number of repeated transmissions of Msg3.

[0135] In one implementation, the number of PUCCH repetition transmissions is calculated based on the number of Msg3 repetition transmissions.

[0136] In one implementation, the number of PUCCH repetition transmissions is equal to the number of Msg3 repetition transmissions divided by a set value and rounded up.

[0137] In one embodiment, the method further comprises:

[0138] The network device sends second indication information, where the second indication information is used to instruct the terminal device to use a frequency hopping method to repeatedly transmit the PUCCH.

[0139] In one implementation, the frequency hopping mode includes at least one of the following:

[0140] Frequency hopping within a time slot;

[0141] Frequency hopping between time slots.

[0142] In one implementation, the intra-time slot frequency hopping includes:

[0143] One time slot includes multiple frequency hopping units. Different frequency hopping units in the same time slot correspond to different frequency domain resources. One PUCCH is divided into multiple parts, and each part is transmitted using one frequency hopping unit in the time slot.

[0144] In one implementation, the inter-time slot frequency hopping includes:

[0145] One time slot includes one frequency hopping unit. The frequency hopping units of adjacent time slots correspond to different frequency domain resources. One PUCCH is transmitted using one frequency hopping unit in one time slot.

[0146] For a specific example of the network device executing the method 300 of this embodiment, reference may be made to the related description of the network device such as a base station in the above method 200, which will not be described again for the sake of brevity.

[0147] Figure 4 4 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. The terminal device 400 may include:

[0148] The processing unit 410 is configured to obtain the number of PUCCH repetition transmissions before the dedicated PUCCH resource is configured.

[0149] In one embodiment, if Figure 5 As shown, the terminal device 500 also includes:

[0150] The first receiving unit 510 is configured to receive first indication information, where the first indication information is used to indicate the number of repeated transmissions of the PUCCH.

[0151] In one implementation, the first indication information includes a first common PUCCH resource set index value;

[0152] The processing unit is further configured to determine a corresponding number of PUCCH repetition transmissions based on the first common PUCCH resource set index value.

[0153] In one implementation, the first public PUCCH resource set index value is in a first range, and the second public PUCCH resource set index value is in a second range.

[0154] In one implementation, if the first range is different from the second range, the first public PUCCH resource set index value is greater than the second public PUCCH resource set index value.

[0155] In one implementation, the number of PUCCH repetition transmissions corresponding to the first public PUCCH resource set index value is greater than 1.

[0156] In one implementation, if the first range is the same as the second range, the number of PUCCH repetition transmissions corresponding to the first public PUCCH resource set index value is greater than or equal to 1.

[0157] In one implementation, the second public PUCCH resource set index value has no corresponding PUCCH repetition transmission number or the corresponding PUCCH repetition transmission number is equal to 1.

[0158] In one implementation, the first indication information is carried by downlink control information DCI.

[0159] In one implementation, the first indication information carried by the DCI is a PUCCH resource indication field.

[0160] In one implementation, the value of the PUCCH resource indication field has a corresponding number of PUCCH repetition transmissions.

[0161] In one implementation, the value of the PUCCH resource indication field is used to determine a common PUCCH resource index value, and the common PUCCH resource index value has a corresponding number of PUCCH repetition transmissions.

[0162] In one implementation, the common PUCCH resource index value is calculated based on the value of the PUCCH resource indication field, the number of control channel elements CCE in the control resource set where the DCI is located, and the index value of the first CCE occupied by the DCI.

[0163] In one implementation, the first indication information is carried by a RAR uplink grant and / or a DCI of a TC-RNTI scrambled CRC in a message Msg3 PUSCH that schedules a random access process.

[0164] In one implementation, the first indication information carried by the RAR uplink grant and / or the DCI of the TC-RNTI scrambled CRC scheduling Msg3 PUSCH is the number of repeated transmissions of Msg3.

[0165] In one implementation, the number of PUCCH repetition transmissions is calculated based on the number of Msg3 repetition transmissions.

[0166] In one implementation, the number of PUCCH repetition transmissions is equal to the number of Msg3 repetition transmissions divided by a set value and rounded up.

[0167] In one embodiment, the device further comprises:

[0168] The transmission unit 520 is configured to repeatedly transmit the PUCCH according to the PUCCH repetition transmission times when repeated transmission is required.

[0169] In one embodiment, the device further comprises:

[0170] The second receiving unit 530 is used to receive second indication information, where the second indication information is used to indicate a frequency hopping method for the terminal device to repeatedly transmit the PUCCH.

[0171] In one implementation, the frequency hopping mode includes at least one of the following:

[0172] Frequency hopping within a time slot;

[0173] Frequency hopping between time slots.

[0174] In one implementation, the intra-time slot frequency hopping includes:

[0175] One time slot includes multiple frequency hopping units. Different frequency hopping units in the same time slot correspond to different frequency domain resources. One PUCCH is divided into multiple parts, and each part is transmitted using one frequency hopping unit in the time slot.

[0176] In one implementation, the inter-time slot frequency hopping includes:

[0177] One time slot includes one frequency hopping unit. The frequency hopping units of adjacent time slots correspond to different frequency domain resources. One PUCCH is transmitted using one frequency hopping unit in one time slot.

[0178] The terminal devices 400 and 500 of the embodiments of the present application can implement the corresponding functions of the terminal devices in the aforementioned method 200 embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the terminal devices 400 and 500 can be found in the corresponding descriptions in the above method embodiments, which will not be repeated here. It should be noted that the functions described by the various modules (sub-modules, units or components, etc.) in the terminal devices 400 and 500 of the embodiments of the application can be implemented by different modules (sub-modules, units or components, etc.), or by the same module (sub-module, unit or component, etc.).

[0179] Figure 6 is a schematic block diagram of a network device 600 according to an embodiment of the present application. The network device 600 may include:

[0180] The first sending unit 610 is used to send first indication information, where the first indication information is used to indicate the number of PUCCH repetition transmissions before dedicated PUCCH resources are configured.

[0181] In one implementation, the first indication information includes a first common PUCCH resource set index value, and the first common PUCCH resource set index value has a corresponding number of PUCCH repetition transmissions.

[0182] In one implementation, the first public PUCCH resource set index value is in a first range, and the second public PUCCH resource set index value is in a second range.

[0183] In one implementation, if the first range is different from the second range, the first public PUCCH resource set index value is greater than the second public PUCCH resource set index value.

[0184] In one implementation, the number of PUCCH repetition transmissions corresponding to the first public PUCCH resource set index value is greater than 1.

[0185] In one implementation, if the first range is the same as the second range, the number of PUCCH repetition transmissions corresponding to the first public PUCCH resource set index value is greater than or equal to 1.

[0186] In one implementation, the second public PUCCH resource set index value has no corresponding PUCCH repetition transmission number or the corresponding PUCCH repetition transmission number is equal to 1.

[0187] In one implementation, the first indication information is carried via a system message.

[0188] In one implementation, the common PUCCH configuration parameter in the system message carries the first indication information.

[0189] In one implementation, the first indication information is carried by downlink control information DCI.

[0190] In one implementation, the first indication information carried by the DCI is a PUCCH resource indication field.

[0191] In one implementation, the value of the PUCCH resource indication field has a corresponding number of PUCCH repetition transmissions.

[0192] In one implementation, the value of the PUCCH resource indication field is used to determine a common PUCCH resource index value, and the common PUCCH resource index value has a corresponding number of PUCCH repetition transmissions.

[0193] In one implementation, the common PUCCH resource index value is calculated based on the value of the PUCCH resource indication field, the number of CCEs in the control resource set where the DCI is located, and the index value of the first CCE occupied by the DCI.

[0194] In one implementation, the first indication information is carried by a RAR uplink grant and / or a DCI of a TC-RNTI scrambled CRC in a message Msg3 PUSCH that schedules a random access process.

[0195] In one implementation, the first indication information carried by the RAR uplink grant and / or the DCI of the TC-RNTI scrambled CRC scheduling Msg3 PUSCH is the number of repeated transmissions of Msg3.

[0196] In one implementation, the number of PUCCH repetition transmissions is calculated based on the number of Msg3 repetition transmissions.

[0197] In one implementation, the number of PUCCH repetition transmissions is equal to the number of Msg3 repetition transmissions divided by a set value and rounded up.

[0198] In one embodiment, if Figure 7 As shown, the network device 700 also includes:

[0199] The second sending unit 710 is used to send second indication information, where the second indication information is used to instruct the terminal device to use a frequency hopping method to repeatedly transmit the PUCCH.

[0200] In one implementation, the frequency hopping mode includes at least one of the following: frequency hopping within a time slot; and frequency hopping between time slots.

[0201] In one implementation, the intra-time slot frequency hopping includes:

[0202] One time slot includes multiple frequency hopping units. Different frequency hopping units in the same time slot correspond to different frequency domain resources. One PUCCH is divided into multiple parts, and each part is transmitted using one frequency hopping unit in the time slot.

[0203] In one implementation, the inter-time slot frequency hopping includes:

[0204] One time slot includes one frequency hopping unit. The frequency hopping units of adjacent time slots correspond to different frequency domain resources. One PUCCH is transmitted using one frequency hopping unit in one time slot.

[0205] The network devices 600 and 700 of the embodiment of the present application can implement the corresponding functions of the network devices in the embodiment of the aforementioned method 300. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the network devices 600 and 700 can be found in the corresponding descriptions in the above-mentioned method embodiments, which will not be repeated here. It should be noted that the functions described by the various modules (sub-modules, units or components, etc.) in the network devices 600 and 700 of the embodiment of the application can be implemented by different modules (sub-modules, units or components, etc.), or by the same module (sub-module, unit or component, etc.).

[0206] The transmission method provided in the embodiment of the present application is a method for repeated transmission of PUCCH before dedicated PUCCH resource configuration. For example, an additional index value and its corresponding number of repeated transmissions may be added to the table of the public PUCCH resource set, or only the number of repeated transmissions corresponding to the existing index value may be increased to indicate the number of repeated transmissions of PUCCH before dedicated PUCCH resource configuration. For another example, a new system parameter may be introduced in the system message, specifically used to indicate the number of repeated transmissions of PUCCH before dedicated PUCCH resource configuration; for another example, the number of repeated transmissions of PUCCH may be associated with the PUCCH resource indication or the number of repeated transmissions of other channels, such as Msg3 repeated transmission.

[0207] For the frequency hopping processing of PUCCH repeated transmission before dedicated PUCCH resource configuration, only inter-slot frequency hopping may be performed, only intra-slot frequency hopping may be performed, or the base station may indicate through system parameters whether to perform inter-slot or intra-slot frequency hopping.

[0208] The following are several examples of PUCCH repetition transmission mechanisms and repetition number indication schemes:

[0209] Example 1: Adding a repetition count indication in the common PUCCH resource set table

[0210] The table of common PUCCH resource sets in the related art is shown in Table 1 in the related art. Each group of common PUCCH resource sets corresponds to a row in Table 1, corresponds to a PUCCH format, start symbol, number of symbols, PRB offset and cyclic shift index set, and only supports a single PUCCH transmission.

[0211] In order to introduce PUCCH retransmission before dedicated PUCCH resource configuration in a communication scenario with limited coverage performance, such as NTN system, it is possible to consider introducing additional index values ​​in the table of the common PUCCH resource set for configuring repeated transmission of PUCCH, for example, see Table 2:

[0212] Table 2. Common PUCCH resource set in NTN scenario

[0213]

[0214]

[0215] Taking Table 2 as an example, additional index values ​​16-18 are introduced on the basis of the public PUCCH resource indication information, and a column is added for indicating the number of PUCCH repeated transmissions. At this time, index values ​​0-15 can still be used for traditional public PUCCH resource determination, and the PUCCH repeated transmission number indication information is not introduced (for example, "-" indicates that the number of repeated transmissions is empty) or the number of repeated transmissions is recorded as 1. The use of Table 2 is conducive to compatibility with traditional public PUCCH resource configuration methods. According to the range of index values ​​configured by the system message, it can be determined whether repeated transmission is required. For example, if the range of index values ​​configured by the system message is 0-15, repeated transmission does not need to be performed, and if the range of index values ​​configured by the system message is 16-18, repeated transmission needs to be performed. Where X 16 , X 17 , X 18 Indicates the number of times the corresponding PUCCH is repeated. For example, X 16 , X 17 , X 18 Can be greater than 1. For example, X 16 , X 17 , X 18 It can be a value in the supported PUCCH repetition number, such as the currently supported PUCCH repetition transmission number, that is, a value of {2, 4, 8}, or other values. The specific values ​​of the PUCCH format, starting symbol, number of symbols, PRB offset, initial CS index set, etc. corresponding to different index values ​​in Table 2, such as 16-18, are only examples and not limitations, and can also be changed to other values.

[0216] For example, for traditional cells that do not need to improve coverage performance, the base station still configures index values ​​0-15, and the UE determines the common PUCCH resources according to the indicated index value and does not perform PUCCH repeated transmission. Newly added index values, such as 16-18, are used to support PUCCH repeated transmission.

[0217] The base station can configure different index values ​​to indicate the number of PUCCH repetitions before the dedicated PUCCH resource configuration to the UE according to the coverage performance of the current cell. For example, if the base station finds that the current cell coverage performance is poor, it can configure the index value 18 in Table 2 in the cell-level PUCCH parameters. After the UE receives the configuration information, it finds that the number of PUCCH repetitions is X based on 18. 18 =8, then for each PUCCH before the dedicated PUCCH resource configuration, 8 repeated transmissions are performed, thereby improving the coverage performance.

[0218] The above scheme introduces additional resource configuration for PUCCH repeated transmission on the basis of multiplexing public PUCCH resource configuration. At this time, the number of candidate index values ​​in the public PUCCH resource table increases. For example, in the cell-level PUCCH parameters of NTN, the candidate index values ​​are {0, 1, …, 18}, that is, the number of candidate index values ​​is greater than 16.

[0219] In addition, a column may be introduced into the common PUCCH resource set table to specifically indicate the number of PUCCH repetition transmissions before dedicated PUCCH resource configuration, for example:

[0220] Table 3 Common PUCCH resource set in NTN scenario

[0221]

[0222] At this time, the number of candidate index values ​​in the public PUCCH resource set table is still 16, that is, the candidate index values ​​in the cell-level PUCCH parameters of NTN are {0,1,…,15}, and each row corresponds to the number of PUCCH repetition transmissions. For example, the index values ​​3, 7, and 11 correspond to the number of PUCCH repetition transmissions X3, X7, or X respectively. 11 The PUCCH repetition number corresponding to other index values ​​is greater than 1. The base station can configure different index values ​​to indicate the number of PUCCH repetitions before the dedicated PUCCH resource configuration to the UE. For example, if the base station finds that the current cell coverage can meet the performance requirements, it can configure the PUCCH repetition number to be 1 with an index value, such as index values ​​3, 7, and 11, that is, there is no need to perform PUCCH repetition transmission. If the base station finds that the current cell coverage performance is poor, it can configure the PUCCH repetition number to be greater than 1 with an index value, such as 10, 14, etc., and perform multiple PUCCH repetitions, such as 8 times. Using Table 3 is the same as the signaling overhead of configuring the common PUCCH resource set index value in the traditional way.

[0223] Example 2: System message indicates the number of PUCCH repetition transmissions

[0224] Example 1 modifies the common PUCCH resource set table and configures different PUCCH repetition transmission times for the UE by indicating different index values ​​without introducing additional system parameters. The PUCCH repetition transmission times will be bound to a specific PUCCH resource. For example, the PUCCH resource corresponding to index value 3 in Table 3 can only perform 8 PUCCH repetition transmissions. Example 2 can further improve the flexibility of configuration.

[0225] In the system message, for example, in the common PUCCH parameters of SIB1 of the system message, a new system parameter is introduced to specifically indicate the number of PUCCH repetition transmissions before the dedicated PUCCH resource is configured, for example, NTN-nrofSlots={2,4,8}, indicating that the number of PUCCH repetition transmissions can be selected from 2, 4 or 8. The base station can flexibly configure the number of PUCCH repetition transmissions and the common PUCCH resources.

[0226] For example, if the index value in the base station indication table 1 is 11, and the number of PUCCH repetition transmissions indicated in the system parameters notified by the system message is 8, the UE can perform 8 PUCCH repetition transmissions on the common PUCCH resources determined based on the index value 11. By decoupling the common PUCCH resources and the number of PUCCH repetition transmissions, more flexible resource indication can be achieved.

[0227] Example 3: Each UE independently configures the number of PUCCH repetition transmissions

[0228] In Example 1 and Example 2, the cell-level system message can be used to indicate the number of PUCCH repetition transmissions. In this case, all UEs in the cell have the same number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration. Although the coverage performance in a single cell in the NTN scenario is not much different, indicating the number of independent PUCCH repetition transmissions for each UE can still further improve system efficiency.

[0229] Table 1 predefines 16 groups of common PUCCH resource sets in the form of index values, and each group of PUCCH resource sets further includes 16 PUCCH resources. For example, the PUCCH resource index value is rPUCCH, and there exists 0≤rPUCCH≤15, and the formula for determining rPUCCH is as follows:

[0230]

[0231] NCCE is the number of CCEs in the control resource set where the DCI is located, nCCE,0 is the index value of the first CCE occupied by the DCI, and ΔPRI is the value of the PUCCH resource indication field in the DCI, which is indicated by 3 bits.

[0232] In a communication scenario with limited coverage performance, such as an NTN system, a PUCCH resource index value rPUCCH in a PUCCH resource set may be associated with the number of PUCCH repetition transmissions.

[0233] For example, as shown in Table 4, the 3-bit PUCCH resource indication field in the DCI can simultaneously indicate the number of PUCCH repetition transmissions. For example, '000' corresponds to a single PUCCH transmission, '001' corresponds to 2 repetition transmissions, ..., '111' corresponds to 8 PUCCH repetition transmissions, and so on. If the UE receives a value of '001' in the PUCCH resource indication field, it means that the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration is 2. The mapping relationship in Table 4 is only an example, and other mapping relationships can also be used, for example, '001' corresponds to 4 repetition transmissions, '011' corresponds to 6 repetition transmissions, etc.

[0234] Table 4. Mapping of PUCCH resource indication field to PUCCH retransmission times

[0235] PUCCH resource indication Number of PUCCH repetition transmissions ‘000’ 1 ‘001’ 2 ‘010’ 3 ‘011’ 4 ‘100’ 5 ‘101’ 6 ‘110’ 7 ‘111’ 8

[0236] Or different PUCCH resource index values ​​rPUCCH correspond to different PUCCH repetition transmission times, such as rPUCCH=0 corresponds to a single PUCCH transmission, rPUCCH=1 corresponds to 2 PUCCH repetition transmissions, ..., rPUCCH=15 corresponds to 16 PUCCH repetition transmissions.

[0237] Based on the above method, the base station can indirectly indicate the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration to the UE by indicating different PUCCH resource index values ​​to the UE. At this time, the base station can indicate different PUCCH repetition transmissions to different UEs in the cell based on the UE coverage performance, thereby improving system efficiency without introducing additional control information fields.

[0238] Example 4: Binding to the number of repetitions of Msg3

[0239] Repeated transmission of Msg3 during random access, and the candidate number of repeated transmissions includes {1,2,3,4,7,8,12,16}. For scenarios with limited coverage performance, the base station selects 4 values ​​from the candidate number of repeated transmissions of Msg3 and indicates them to the UE through system parameters such as parameters in SIB1. The actual number of repeated transmissions of Msg3 is then indicated to the UE through the highest 2 bits of the MCS information field in the RAR uplink grant (or DCI 0_0 of TC-RNTI scrambled CRC) of the scheduling Msg3 PUSCH.

[0240] Since PUCCH is transmitted after Msg3, it is possible to consider associating the number of PUCCH repetition transmissions with the number of Msg3 repetition transmissions. For example, the number of PUCCH repetition transmissions before the dedicated PUCCH resource configuration is implicitly derived from the number of Msg3 repetition transmissions.

[0241] If the number of repetitions of Msg3 is M and the number of repetitions of PUCCH is N, then these two repetitions can satisfy a certain multiple conversion relationship, such as Since the coverage performance of PUCCH is generally better than that of Msg3, the number of repeated transmissions of PUCCH may be less than the number of repeated transmissions of Msg3.

[0242] For example, when K=2, if the base station indicates that the number of repetitions of Msg3 is M=8, the UE can further deduce the number of repetitions of PUCCH. Considering that there may be a situation where M and K are not divisible, rounding up is introduced in the formula. For example, if the base station indicates that the number of repeated transmissions of Msg3 is M=3, the UE can deduce the number of repeated transmissions of PUCCH.

[0243] Example 5: UE performs PUCCH repeated transmission

[0244] If the UE is instructed to perform PUCCH repetition transmission in N time slots before dedicated PUCCH resources are configured, the UE repeats PUCCH transmission in these N time slots.

[0245] The PUCCH transmissions on the N time slots may have the same number of consecutive symbols, which is determined by the number of symbols corresponding to the common PUCCH resource set index value indicated by the base station.

[0246] In addition, the PUCCH transmissions on the N time slots may have the same starting symbol, which is determined by the starting symbol index corresponding to the common PUCCH resource set index value indicated by the base station.

[0247] In one case, if the UE performs inter-slot frequency hopping during repeated PUCCH transmission, the UE performs frequency hopping in each of the N time slots. For example, the UE sends PUCCH starting from the first PRB in the even-numbered time slots in the N time slots, and sends PUCCH starting from the second PRB in the odd-numbered time slots in the N time slots. The time slot indicated by the base station to the UE for the first PUCCH transmission can be recorded as 0, and each of the N time slots is counted, regardless of whether the UE sends PUCCH in this time slot. The index of the first PRB and the second PRB can be determined according to the common PUCCH resource PRB index determination formula in the relevant technology.

[0248] In another case, if the UE performs intra-slot frequency hopping during PUCCH repetitive transmission, the UE has the same frequency hopping pattern between the first PRB and the second PRB in each slot, wherein the index of the first PRB and the second PRB can be determined according to the common PUCCH resource PRB index determination formula in the related art.

[0249] For PUCCH transmission in a time slot, if the UE finds that the number of symbols available for PUCCH transmission is less than the number of symbols corresponding to the common PUCCH resource set index value indicated by the base station, the UE does not send PUCCH in the time slot.

[0250] If the UE wants to send PUCCH on N time slots, but does not send the PUCCH on one of the time slots due to a collision with another PUCCH transmission, the UE counts this time slot into the N time slots.

[0251] Example 6: Frequency hopping when PUCCH repeated transmission is introduced

[0252] In the related art, only a single PUCCH transmission is supported before dedicated PUCCH resources are configured, and frequency hopping is performed within a time slot, that is, for a PUCCH with a symbol number of L, the number of symbols in the first frequency hopping unit is The number of symbols in the second frequency hopping unit is And the starting PRB indexes of the first and second frequency hopping units can be determined according to the common PUCCH resource PRB index determination formula in the related art, wherein the starting PRB index of the first frequency hopping unit is RB1 and the starting PRB index of the second frequency hopping unit is RB2.

[0253] After the introduction of PUCCH repetitive transmission before dedicated PUCCH resource configuration, it is necessary to consider how to further perform frequency hopping between PUCCH repetitive transmissions. An exemplary solution is as follows:

[0254] For repeated PUCCH transmissions before dedicated PUCCH resource configuration, inter-slot frequency hopping is not performed, and intra-slot frequency hopping is always performed. For example, assuming that the number of PUCCH repetitions before dedicated PUCCH resource configuration is N, corresponding to N time slots, and the first PUCCH transmission time slot is defined as time slot 0, then PUCCH transmissions on each time slot perform intra-slot frequency hopping, and the frequency hopping patterns between time slots are the same.

[0255] Figure 8 For PUCCH repetitive transmission, only intra-slot frequency hopping is performed. Figure 8For example, the number of symbols occupied by PUCCH transmission in each time slot is 14, then the first hopping unit corresponds to the first 7 symbols, and the starting PRB index is RB1; the second hopping unit corresponds to the last 7 symbols, and the starting PRB index is RB2. At this time, for PUCCH repeated transmission, the hopping pattern of each time slot is the same. The UE transmits the first 7 symbols of PUCCH in the first hopping unit of time slot 0, and transmits the last 7 symbols of PUCCH in the second hopping unit of time slot 0. The UE transmits the first 7 symbols of PUCCH in the first hopping unit of time slot 1, and transmits the last 7 symbols of PUCCH in the second hopping unit of time slot 1. And so on, until the number of times the UE performs PUCCH transmission in time slot 7 is equal to the number of PUCCH repeated transmissions, 8.

[0256] For PUCCH repetitive transmission before dedicated PUCCH resource configuration, intra-time slot frequency hopping is not performed, and inter-time slot frequency hopping is always performed. That is, assuming that the number of PUCCH repetitions before dedicated PUCCH resource configuration is N, corresponding to N time slots, and the first PUCCH transmission time slot is defined as time slot 0, then the first hopping unit corresponds to an even time slot, and the starting PRB index is RB1; then the second hopping unit corresponds to an odd time slot, and the starting PRB index is RB2.

[0257] Fig. 9 Only inter-slot frequency hopping is performed for PUCCH repetitive transmission. Fig. 9 For example, the number of PUCCH repetitions is N=8, corresponding to 8 time slots, and the first PUCCH transmission time slot is defined as time slot 0. Then the first hopping unit corresponds to even time slots, that is, time slots 0, 2, 4, 6, and the starting PRB index is RB1; then the second hopping unit corresponds to odd time slots, that is, 1, 3, 5, 7, and the starting PRB index is RB2. The UE transmits PUCCH in the first hopping unit of time slot 0 and in the second hopping unit of time slot 1. The UE transmits PUCCH in the first hopping unit of time slot 2 and in the second hopping unit of time slot 3. And so on, until the number of times the UE performs PUCCH transmission in time slot 7 is equal to the number of PUCCH repetition transmissions 8.

[0258] The frequency hopping mode of PUCCH repeated transmission before the dedicated PUCCH resource configuration can also be configured through system message configuration, such as SIB1 in the system message. For example, the configured candidate frequency hopping modes include {inter-time slot frequency hopping, intra-time slot frequency hopping}. The base station can flexibly select a frequency hopping mode to configure for the UE, so as to obtain the optimal frequency hopping performance.

[0259] It should be noted that no matter which of the above frequency hopping modes is adopted, when PUCCH repeated transmission is not performed, the traditional intra-time slot frequency hopping mode can still be used.

[0260] The PUCCH repeated transmission method before dedicated PUCCH resource configuration in the embodiment of the present application includes at least one of the following features:

[0261] An additional index value and the number of repeated transmissions are added to the table of the common PUCCH resource set, or only the number of PUCCH repeated transmissions before the dedicated PUCCH resource configuration corresponding to the index value is increased, without introducing new system parameters.

[0262] A new system parameter is introduced in the system message to specifically indicate the number of PUCCH repetition transmissions before dedicated PUCCH resource configuration, so as to achieve more flexible PUCCH resource and repetition number indication.

[0263] The number of PUCCH repetition transmissions is associated with the PUCCH resource indication or the number of other channel repetition transmissions, and the number of PUCCH repetition transmissions can be individually indicated for each UE.

[0264] For the frequency hopping processing of PUCCH repeated transmission before dedicated PUCCH resource configuration, if only inter-slot frequency hopping is performed, or only intra-slot frequency hopping is performed, the base station and the UE can have a common understanding of the frequency hopping method of PUCCH repeated transmission. If the base station indicates through system parameters whether to perform inter-slot or intra-slot frequency hopping, a flexible frequency hopping method can be used to achieve optimal performance.

[0265] In addition to being applicable to the NTN system, the solution of the embodiment of the present application can also be extended to any system that applies PUCCH repeated transmission before dedicated PUCCH resource configuration.

[0266] Fig.10 1 is a schematic structural diagram of a communication device 1000 according to an embodiment of the present application. The communication device 1000 includes a processor 1010, and the processor 1010 can call and run a computer program from a memory to enable the communication device 1000 to implement the method in the embodiment of the present application.

[0267] In one implementation, the communication device 1000 may further include a memory 1020. The processor 1010 may call and run a computer program from the memory 1020, so that the communication device 1000 implements the method in the embodiment of the present application.

[0268] The memory 1020 may be a separate device independent of the processor 1010 , or may be integrated into the processor 1010 .

[0269] In one implementation, the communication device 1000 may further include a transceiver 1030 , and the processor 1010 may control the transceiver 1030 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0270] The transceiver 1030 may include a transmitter and a receiver. The transceiver 1030 may further include an antenna, and the number of antennas may be one or more.

[0271] In one implementation, the communication device 1000 may be a network device of an embodiment of the present application, and the communication device 1000 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0272] In one implementation, the communication device 1000 may be a terminal device of an embodiment of the present application, and the communication device 1000 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, which will not be described here for the sake of brevity.

[0273] Fig.11 1 is a schematic structural diagram of a chip 1100 according to an embodiment of the present application. The chip 1100 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0274] In one implementation, the chip 1100 may further include a memory 1120. The processor 1110 may call and run a computer program from the memory 1120 to implement the method executed by the terminal device or the network device in the embodiment of the present application.

[0275] The memory 1120 may be a separate device independent of the processor 1110 , or may be integrated into the processor 1110 .

[0276] In one implementation, the chip 1100 may further include an input interface 1130. The processor 1110 may control the input interface 1130 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0277] In one implementation, the chip 1100 may further include an output interface 1140. The processor 1110 may control the output interface 1140 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0278] In one implementation, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0279] In one implementation, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0280] The chips used in the network device and the terminal device may be the same chip or different chips.

[0281] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0282] The processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC) or other programmable logic devices, transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor mentioned above may be a microprocessor or any conventional processor, etc.

[0283] The memory mentioned above may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM) or a flash memory. The volatile memory may be a random access memory (RAM).

[0284] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0285] Fig.12 1 is a schematic block diagram of a communication system 1200 according to an embodiment of the present application. The communication system 1200 includes a terminal device 1210 and a network device 1220.

[0286] The terminal device 1210 is used to obtain the number of PUCCH repetition transmissions before the dedicated PUCCH resource is configured.

[0287] In one embodiment, the network device 1220 is used to send first indication information, where the first indication information is used to indicate the number of PUCCH repetition transmissions before dedicated PUCCH resources are configured.

[0288] The terminal device 1210 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1220 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be described in detail here.

[0289] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using 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 instructions. When the computer program instructions are loaded and executed on a computer, the process or function in accordance with the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, data center, etc. that contains one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0290] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0291] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0292] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A transmission method, comprising: The terminal device obtains the number of PUCCH repetition transmissions before the dedicated physical uplink control channel PUCCH resource configuration.

2. The method according to claim 1, wherein: The method further comprises: The terminal device receives first indication information, where the first indication information is used to indicate the number of times the PUCCH is repeatedly transmitted.

3. The method according to claim 2, wherein: The first indication information is carried by a system message.

4. The method according to claim 2, wherein: The first indication information is carried by downlink control information DCI.

5. The method according to any one of claims 1 to 4, wherein: The method further comprises: When the terminal device needs to repeatedly transmit the PUCCH before the dedicated PUCCH resource configuration, the PUCCH before the dedicated PUCCH resource configuration is repeatedly transmitted according to the number of PUCCH repeated transmissions.

6. The method according to any one of claims 1 to 5, wherein: The method further comprises: The terminal device receives second indication information, where the second indication information is used to instruct the terminal device to use a frequency hopping method to repeatedly transmit the PUCCH.

7. The method according to claim 5 or 6, wherein: The frequency hopping mode in which the terminal device repeatedly transmits the PUCCH includes at least one of the following: Frequency hopping within a time slot; Frequency hopping between time slots.

8. The method according to claim 7, wherein: The frequency hopping in the time slot includes: One time slot includes multiple frequency hopping units. Different frequency hopping units in the same time slot correspond to different frequency domain resources. One PUCCH is divided into multiple parts, and each part is transmitted using one frequency hopping unit in the time slot.

9. A transmission method, comprising: The network device sends first indication information, where the first indication information is used to indicate the number of PUCCH repetition transmissions before dedicated PUCCH resources are configured.

10. The method according to claim 9, wherein: The first indication information is carried by a system message.

11. The method according to claim 9, wherein: The first indication information is carried by downlink control information DCI.

12. The method according to any one of claims 9 to 11, wherein: The method further comprises: The network device sends second indication information, where the second indication information is used to instruct the terminal device to use a frequency hopping method to repeatedly transmit the PUCCH.

13. The method according to claim 12, wherein: The frequency hopping mode in which the terminal device repeatedly transmits the PUCCH includes at least one of the following: Frequency hopping within a time slot; Frequency hopping between time slots.

14. The method according to claim 13, wherein: The frequency hopping in the time slot includes: One time slot includes multiple frequency hopping units. Different frequency hopping units in the same time slot correspond to different frequency domain resources. One PUCCH is divided into multiple parts, and each part is transmitted using one frequency hopping unit in the time slot.

15. A terminal device, comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, so that the terminal device executes the method as claimed in any one of claims 1 to 8.

16. A network device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, so that the network device executes the method according to any one of claims 9 to 14.

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