Communication method and device

Abstract

The embodiment of the invention provides a communication method and device, under the condition that a network device does not configure a special PUCCH for a terminal device, the PUCCH is repeatedly transmitted, the success rate of information transmission in the communication process is improved, the communication transmission efficiency is improved, and the problem that under the condition, the communication transmission efficiency is low in a coverage enhancement scene can be effectively solved.

Description

[0001] This application is a divisional application. The application number of the original application is 202110359884.X, and the original application date is April 2, 2021. The entire contents of the original application are incorporated into this application by reference.

[0002] This application claims priority to a Chinese patent application filed with the State Intellectual Property Office of China on March 11, 2021, with application number 202110265678.2 and application name “A Method for Determining the Number of PUCCH Repetitions”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of communications, and more specifically, to a communication method and device in the field of communications. Background Art

[0004] In the communication system, the power limit of the terminal equipment is lower than the power limit of the network equipment due to the cost of the terminal equipment. Therefore, the coverage of the uplink transmission is generally lower than that of the downlink transmission. Therefore, there will be some limited coverage in the uplink transmission, resulting in the signal strength of the transmission failing to meet the communication needs, affecting the transmission efficiency of the communication process.

[0005] In addition, regarding the transmission of the physical uplink control channel (PUCCH) for uplink transmission, in some scenarios (for example, the random access process) where the network device has not configured the dedicated PUCCH through high-level signaling, for some scenarios with limited coverage, the current technology does not provide a specific solution, therefore, to a certain extent, affecting the transmission efficiency of the communication process. Summary of the invention

[0006] The embodiments of the present application provide a method, terminal device and network device for transmitting a physical uplink control channel. When the network device does not configure a dedicated PUCCH for the terminal device, it is proposed to repeatedly transmit the PUCCH to improve the success rate of information transmission during the communication process, so as to improve the transmission efficiency of the communication, and can effectively solve the problem of low transmission efficiency of communication in the coverage enhancement scenario in this case.

[0007] In a first aspect, a method for transmitting a physical uplink control channel is provided, comprising:

[0008] receiving a first message;

[0009] In the case where the terminal device is not configured with a dedicated physical uplink control channel PUCCH, the first PUCCH is repeatedly transmitted using a repetition number N, where the dedicated PUCCH is configured to the terminal device by a network device through a high-layer signaling, and N is an integer greater than 1; wherein,

[0010] The first PUCCH is used to carry feedback information, and the feedback information is used to indicate whether the terminal device successfully receives the first message, or the feedback information is information related to channel quality determined based on the first message; or the first PUCCH is determined based on the first message.

[0011] In some embodiments, the first message and the first PUCCH are messages and PUCCHs in a random access process. For example, the first message is the fourth message (Msg4) in the random access process, and the first PUCCH is used to carry feedback information for Msg4, that is, the feedback information is used to indicate whether the terminal device successfully receives Msg4.

[0012] In some other embodiments, the first message and the first PUCCH are messages and PUCCHs in the RRC signaling configuration process. For example, the first message is RRC signaling, and the first PUCCH is used to carry feedback information for the RRC signaling, and the feedback information may be feedback information sent by the physical layer of the terminal device, and the feedback information is used to indicate whether the terminal device has successfully received the RRC signaling, or, in other words, the feedback information is used to indicate whether the terminal device has successfully received a downlink physical layer shared channel (physical downlink shared channel, PDSCH) used to carry the RRC signaling.

[0013] In some other embodiments, the first message and the first PUCCH are messages and PUCCH in a channel measurement process.

[0014] For example, the first message may be a channel measurement request, and the first PUCCH is used to carry feedback information related to the channel quality determined based on the channel measurement request, and the feedback information may include a CSI measurement result or a transmit beam.

[0015] In some other embodiments, the first message may be indication information indicating the transmission resources occupied by the PUCCH used to carry the SR, and the first PUCCH is determined based on the indication information, that is, the transmission resources occupied by the first PUCCH are obtained based on the indication information.

[0016] In the method for transmitting the physical uplink control channel provided in the embodiment of the present application, when the network device does not configure a dedicated PUCCH for the terminal device, the terminal device can use the repetition number N to repeatedly transmit the first PUCCH related to the first message. In this way, the success rate of the first PUCCH transmission can be improved to improve the transmission efficiency of the communication, and the problem of low transmission efficiency of the communication in the coverage enhancement scenario can be effectively solved.

[0017] Optionally, the first message includes first indication information, and the first indication information is used to determine the number of repetitions N.

[0018] Optionally, the first indication information includes a first index, where the first index is used to indicate the number of repetitions N, and the first index is also used to indicate a first modulation and coding strategy MCS, where the first MCS is used to demodulate at least part of the content of the first message.

[0019] The method for physical uplink control channel transmission provided in an embodiment of the present application associates the first MCS with the number of repetitions N of the first PUCCH, and simultaneously indicates the number of repetitions N of the first PUCCH by using the first index used to indicate the first MCS, that is, multiplexing the first index used to indicate the first MCS, which can not only fully meet the existing MCS indication, but also reduce the number of extra bits due to the separate indication of the number of repetitions N, thereby reducing the signaling overhead.

[0020] Optionally, the first index is an index in the MCS table, and the maximum number of bits occupied by the first index is less than 5.

[0021] The first index is any index in the MCS table.

[0022] The method for transmitting the physical uplink control channel provided in the embodiment of the present application, as the first index of any index in the MCS table, when the maximum number of bits occupied by the first index is less than 5, means that, compared with the case where the maximum number of bits occupied by the index in the MCS table of the prior art is at least equal to 5, the MCS table in the embodiment of the present application is equivalent to deleting a part of the MCS indicated by the index with a large value, and retaining a part of the MCS indicated by the index with a smaller value. First, by deleting the MCS in the MCS table, the number of occupied bits can be reduced, and resource waste can be reduced. Second, since a high-performance MCS may not be required in the coverage enhancement scenario, the MCS deleted from the MCS table has basically no effect on the communication transmission in the coverage enhancement scenario, and can fully meet the communication transmission in the coverage enhancement scenario.

[0023] Optionally, the first indication information is carried in a first part of bits in an MCS field of downlink control information DCI; and,

[0024] The MCS field also includes a second portion of bits, where the second portion of bits is used to carry MCS information indicating a first MCS, where the first MCS is used to demodulate at least part of the content of the first message; wherein,

[0025] The first indication information includes a first index for indicating the number of repetitions N, and the MCS information includes a second index for indicating the first MCS, the second index is an index in the MCS table, and the maximum number of bits occupied by the second index is less than 5.

[0026] The second index is any index in the MCS table.

[0027] Therefore, the method for transmitting the physical uplink control channel provided in the embodiment of the present application, as the second index of any index in the MCS table, occupies a maximum number of bits less than 5, which means that, compared with the existing MCS table in which the maximum number of bits occupied by the index is 5, the MCS table of this embodiment deletes a part of the MCS indicated by the index with a large value, and retains a part of the MCS indicated by the index with a smaller value. First, by deleting the MCS in the MCS table, the number of occupied bits can be reduced, and resource waste can be reduced. Second, since a high-performance MCS may not be required in the coverage enhancement scenario, the MCS deleted from the MCS table has basically no effect on the communication transmission in the coverage enhancement scenario, and can fully meet the communication transmission in the coverage enhancement scenario. Third, on this basis, the number of repetitions N of the first PUCCH can be additionally indicated in the existing MCS field, and the effect of reducing resource waste can be further achieved by reusing the existing MCS field.

[0028] Optionally, the first indication information is used to indicate a first numerical value, and the first numerical value is related to the number of repetitions N.

[0029] The method for transmitting a physical uplink control channel provided in an embodiment of the present application, by associating a first numerical value with the number of repetitions N of the first PUCCH, the terminal device can obtain the number of repetitions N according to the first numerical value indicated by the first indication information. Compared with the case where N is included in the first indication information, the number of bits can be effectively reduced to a certain extent to reduce signaling overhead.

[0030] Optionally, the first value and the number of repetitions N satisfy any one of the following relationships: N=2^x; or, N=2+x; wherein x is the first value.

[0031] Optionally, the first indication information is used to indicate the total number of symbols occupied by repeated transmission of the first PUCCH, and the number of repetitions N is related to the total number of symbols and the number of symbols occupied by a single transmission of the first PUCCH.

[0032] The method for physical uplink control channel transmission provided in the embodiment of the present application associates the number of repetitions N of the first PUCCH with the total number of symbols occupied by the repeated transmission of the first PUCCH. The terminal device can obtain the number of repetitions N through the total number of symbols indicated by the network device. In this way, the number of symbols occupied by a single transmission of PUCCH in the existing standard PUCCH resources can be modified to the total number of symbols. The changes to the existing PUCCH resources are relatively small and easy to implement.

[0033] Optionally, the first indication information is used to indicate the number of repetitions N.

[0034] Optionally, the first indication information is carried in a system message.

[0035] Optionally, the first indication information is carried in DCI.

[0036] Optionally, the first message is the fourth message of the random access process; and,

[0037] The number of repetitions N is related to the number of repetitions M that the terminal device repeatedly sends the third message during the random access process, and M is a positive integer greater than 1.

[0038] The method for transmitting a physical uplink control channel provided in an embodiment of the present application can determine the number of repetitions N based on the number of repetitions M by associating the number of repetitions M of the third message in the random access process with the number of repetitions N of the first PUCCH. Compared with the method of determining the number of repetitions N through signaling, the overhead caused by transmission signaling can be effectively saved.

[0039] Optionally, the number of repetitions N is equal to the number of repetitions M; or,

[0040] The number of repetitions N is related to the number of repetitions M and a preset value.

[0041] Optionally, the number of repetitions M is the number of repetitions of initially transmitting the third message; or,

[0042] The number of repetitions M is the number of repetitions of retransmitting the third message; or,

[0043] The number of repetitions M is the sum of the number of repetitions of initially transmitting the third message and the number of repetitions of retransmitting the third message.

[0044] Optionally, capability information is sent, where the capability information is used to indicate that the terminal device supports or is in a coverage enhancement scenario.

[0045] In the method for transmitting a physical uplink control channel provided in an embodiment of the present application, the terminal device sends capability information to the network device. First, the network device can determine whether the terminal device needs coverage enhancement. If coverage enhancement is needed, the first indication information for determining the number of repetitions N can be sent. If coverage enhancement is not needed, the first indication information can be not sent. In this way, unnecessary signaling overhead can be reduced. Second, in the case where the terminal device determines the number of repetitions N by itself, the network device can also determine, based on the capability information, that the terminal device is likely to repeatedly send the first PUCCH, so as to identify the repeatedly sent first PUCCH.

[0046] Optionally, the capability information includes at least one of the following:

[0047] The preamble sequence corresponding to the coverage enhancement scenario in the first message of the random access process; or,

[0048] The format of the demodulation reference signal DMRS corresponding to the coverage enhancement in the third message in the random access process, or the uplink control information corresponding to the coverage enhancement in the third message; or

[0049] The third message is sent repeatedly for a number of times M during the random access process, where M is a positive integer greater than 1.

[0050] Optionally, in the N repeated transmissions of the first PUCCH, resources occupied by the N-1 transmission of the first PUCCH are offset by m1 frequency domain units relative to the resources occupied by the 1st transmission, the N-1 transmission is the transmission after the 1st transmission, and m1 is a positive integer greater than 0.

[0051] The method for physical uplink control channel transmission provided in an embodiment of the present application not only provides resources for the scenario of repeated transmission of PUCCH by separating the resources occupied by the N-1 transmissions of the first PUCCH from the frequency domain of the resources occupied by the 1st transmission, but also can reduce the conflict between the resources occupied by the repeated transmission PUCCH and the resources occupied by the existing 1st transmission PUCCH.

[0052] Optionally, the resources occupied by the N repeated transmissions of the first PUCCH are offset by m2 relative to the reference frequency domain unit.

[0053] frequency domain units, and m2 is a positive integer greater than 0.

[0054] The method for transmitting a physical uplink control channel provided in an embodiment of the present application provides resources for a scenario of repeated transmission of the PUCCH by separating the resources occupied by the N transmissions of the first PUCCH from the reference frequency domain unit.

[0055] In a second aspect, a method for transmitting a physical uplink control channel is provided, including:

[0056] Sending a first message;

[0057] In the case where the terminal device is not configured with a dedicated physical uplink control channel PUCCH, the first PUCCH is repeatedly received using a repetition number N, where the dedicated PUCCH is configured to the terminal device by a network device through a high-layer signaling, and N is an integer greater than 1; wherein,

[0058] The first PUCCH is used to carry feedback information, and the feedback information is used to indicate whether the terminal device successfully receives the first message, or the feedback information is information related to channel quality determined based on the first message; or the first PUCCH is determined based on the first message.

[0059] Optionally, the first message includes first indication information, and the first indication information is used to determine the number of repetitions N.

[0060] Optionally, the first indication information includes a first index, where the first index is used to indicate the number of repetitions N, and the first index is also used to indicate a first modulation and coding strategy MCS, where the first MCS is used to demodulate at least part of the content of the first message.

[0061] Optionally, the first index is an index in the MCS table, and the maximum number of bits occupied by the first index is less than 5.

[0062] Optionally, the first indication information is carried in a first part of bits in an MCS field of downlink control information DCI; and,

[0063] The MCS field also includes a second portion of bits, where the second portion of bits is used to carry MCS information indicating a first MCS, where the first MCS is used to demodulate at least part of the content of the first message; wherein,

[0064] The first indication information includes a first index for indicating the number of repetitions N, and the MCS information includes a second index for indicating the first MCS, the second index is an index in the MCS table, and the maximum number of bits occupied by the second index is less than 5.

[0065] Optionally, the first indication information is used to indicate a first numerical value, and the first numerical value is related to the number of repetitions N.

[0066] Optionally, the first value and the number of repetitions N satisfy any one of the following relationships: N=2^x; or, N=2+x; wherein x is the first value.

[0067] Optionally, the first indication information is used to indicate the total number of symbols occupied by repeated transmission of the first PUCCH, and the number of repetitions N is related to the total number of symbols and the number of symbols occupied by a single transmission of the first PUCCH.

[0068] Optionally, the first indication information is used to indicate the number of repetitions N.

[0069] Optionally, the first indication information is carried in DCI.

[0070] Optionally, the method further comprises:

[0071] A system message is sent, where the system message includes second indication information for indicating the number of repetitions N.

[0072] Optionally, the first message is the fourth message of the random access process; and,

[0073] The number of repetitions N is related to the number of repetitions M that the terminal device repeatedly sends the third message during the random access process, and M is a positive integer greater than 1.

[0074] Optionally, the number of repetitions N is equal to the number of repetitions M; or,

[0075] The number of repetitions N is related to the number of repetitions M and a preset value.

[0076] Optionally, the number of repetitions M is the number of repetitions of initially transmitting the third message; or,

[0077] The number of repetitions M is the number of repetitions of retransmitting the third message; or,

[0078] The number of repetitions M is the sum of the number of repetitions of initially transmitting the third message and the number of repetitions of retransmitting the third message.

[0079] Optionally, the method further comprises:

[0080] Receive capability information, where the capability information is used to indicate that the terminal device supports or is in a coverage enhancement scenario.

[0081] Optionally, the capability information includes at least one of the following:

[0082] The preamble sequence corresponding to the coverage enhancement scenario in the first message of the random access process; or,

[0083] The format of the demodulation reference signal DMRS corresponding to the coverage enhancement in the third message in the random access process, or the uplink control information corresponding to the coverage enhancement in the third message; or

[0084] The third message is sent repeatedly for a number of times M during the random access process, where M is a positive integer greater than 1.

[0085] Optionally, in the N repeated transmissions of the first PUCCH, resources occupied by the N-1 transmission of the first PUCCH are offset by m1 frequency domain units relative to the resources occupied by the 1st transmission, the N-1 transmission is the transmission after the 1st transmission, and m1 is a positive integer greater than 0.

[0086] Optionally, resources occupied by the N repeated transmissions of the first PUCCH are offset by m2 frequency domain units relative to a reference frequency domain unit, where m2 is a positive integer greater than 0.

[0087] In a third aspect, a terminal device is provided, wherein the device is used to execute the method provided in the first aspect. Specifically, the device may include a module for executing any possible implementation manner of the first aspect.

[0088] In a fourth aspect, a network device is provided, wherein the device is used to execute the method provided in the second aspect. Specifically, the device may include a module for executing any possible implementation of the second aspect.

[0089] In a fifth aspect, a terminal device is provided, comprising a processor. The processor is coupled to a memory and can be used to execute instructions in the memory to implement the method in any possible implementation of the first aspect. Optionally, the device further comprises a memory. Optionally, the device further comprises a communication interface, and the processor is coupled to the communication interface.

[0090] In a sixth aspect, a network device is provided, comprising a processor. The processor is coupled to a memory and can be used to execute instructions in the memory to implement the method in any possible implementation of the second aspect. Optionally, the device also includes a memory. Optionally, the device also includes a communication interface, and the processor is coupled to the communication interface.

[0091] In a seventh aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a device, the device implements the method in any possible implementation manner of any aspect of the first aspect or the second aspect mentioned above.

[0092] In an eighth aspect, a computer program product comprising instructions is provided, wherein when the instructions are executed by a computer, the device implements the method in any possible implementation manner of any of the first aspect or the second aspect mentioned above.

[0093] In the ninth aspect, a chip is provided, comprising: an input interface, an output interface, a processor and a memory, wherein the input interface, the output interface, the processor and the memory are connected via an internal connection path, and the processor is used to execute the code in the memory. When the code is executed, the processor is used to execute the method in any possible implementation of any aspect of the first aspect or the second aspect mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] Figure 1 It is a schematic structural diagram of a communication system provided in an embodiment of the present application.

[0095] Figure 2 It is a schematic flowchart of the random access process provided in an embodiment of the present application.

[0096] Figure 3 It is a schematic flowchart of the method for physical uplink control channel transmission provided in an embodiment of the present application.

[0097] Figure 4 It is a schematic block diagram of the device provided in an embodiment of the present application.

[0098] Figure 5 It is a schematic structural diagram of the device provided in the embodiment of the present application. DETAILED DESCRIPTION

[0099] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0100] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, fifth generation (5G) system, new radio (NR) or future sixth generation (6G) system, etc.

[0101] Figure 1 1 is a schematic structural diagram of a communication system provided in an embodiment of the present application. The communication system includes one or more network devices (for ease of description, the figure shows network device 10 and network device 20), and one or more terminal devices communicating with the one or more network devices. Figure 1 The terminal devices 11 and 12 shown in the figure communicate with the network device 10 , and the terminal devices 21 and 22 shown in the figure communicate with the network device 20 .

[0102] The terminal device in the embodiment of the present application is a device with wireless transceiver function, which 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 (such as airplanes, balloons and satellites, etc.). The terminal device can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a vehicle-mounted terminal device, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a wearable terminal device, etc. The embodiment of the present application does not limit the application scenario. A terminal may also be sometimes referred to as terminal equipment, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile device, UE terminal equipment, terminal equipment, wireless communication equipment, UE agent or UE device, etc. A terminal device may also be fixed or mobile.

[0103] The network device in the embodiment of the present application may be a device for communicating with a terminal device, and may be any device with a wireless transceiver function. The network device includes, but is not limited to: an evolved base station (NodeB or eNB or e-NodeB, evolved Node B) in LTE, a base station (gNodeB or gNB) or a transceiver point (transmission receiving point / transmission reception point, TRP) in NR, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, etc. The base station may be: a macro base station, a micro base station, a micro-micro base station, a small station, a relay station, or a balloon station, etc. Multiple base stations may support the networks of the same technology mentioned above, or they may support the networks of the different technologies mentioned above. The base station may include one or more co-station or non-co-station TRPs. The network device may also be a wireless controller, CU, and / or DU in a cloud radio access network (CRAN) scenario. The network device may also be a server, a wearable device, or a vehicle-mounted device, etc. The following is an example of a network device being a base station. The multiple network devices may be base stations of the same type or base stations of different types. A base station can communicate with a terminal device, or communicate with the terminal device through a relay station. A terminal device can communicate with multiple base stations of different technologies. For example, a terminal device can communicate with a base station supporting an LTE network, or with a base station supporting a 5G network, and can also support dual connections with a base station of an LTE network and a base station of a 5G network.

[0104] As described in the background technology, due to the limited coverage of uplink transmission, the coverage strength of the signal cannot meet the communication requirements, affecting the transmission efficiency of the communication process, and when the network device does not configure a dedicated physical uplink control channel (dedicated physical uplink control channel, dedicated PUCCH) for the terminal device, the current technology does not provide a specific solution. Therefore, when the coverage of uplink transmission is limited, resulting in low transmission efficiency, it is necessary to perform coverage enhancement (CE) on the communication of uplink transmission to improve the transmission efficiency.

[0105] For the convenience of description, the scenarios that require coverage enhancement in the embodiments of the present application are collectively referred to as coverage enhancement scenarios.

[0106] Based on this, an embodiment of the present application provides a method for transmitting a physical uplink control channel. When the network device has not configured a dedicated PUCCH for the terminal device, it is proposed to repeatedly transmit the PUCCH to improve the success rate of information transmission during the communication process, so as to improve the transmission efficiency of the communication, and can effectively solve the problem of low transmission efficiency of communication in the coverage enhancement scenario in this case.

[0107] It should be understood that, in other words, since PUCCH carries information, repeated transmission of PUCCH can also be understood as repeated transmission of information carried on PUCCH. The explanation of repeated transmission of PUCCH in the following is the same as here, and for the sake of brevity, it will not be repeated later.

[0108] The dedicated PUCCH refers to the PUCCH that the network device configures to the terminal device through radio resource control (RRC) signaling. The following briefly describes the process of the network device configuring the RRC signaling.

[0109] After the terminal device accesses the network through the random access process, the network device configures RRC signaling and sends the RRC signaling to the terminal device, wherein the RRC signaling is configured with a dedicated PUCCH resource. If the terminal device successfully receives the RRC signaling at the physical layer, the terminal device sends a feedback message to the network device to inform itself that the RRC signaling has been successfully received at the physical layer; if the terminal device does not successfully receive the RRC signaling at the physical layer, the terminal device may also send a feedback message to the network device to inform itself that the RRC signaling has not been successfully received at the physical layer. The network device will repeat the RRC signaling according to a preset number of times until the terminal device successfully receives the RRC signaling at the physical layer. After the terminal device successfully receives the RRC signaling at the physical layer, the terminal device continues to submit the RRC signaling from the physical layer to the RRC layer. After the terminal device successfully receives the RRC signaling at the RRC layer, it sends another feedback message to the network device through the RRC layer to inform the network device that it has completed the configuration of the RRC signaling at the RRC layer. In this way, the RRC signaling configuration is successful, which means that the network device has completed the configuration of the dedicated PUCCH resources. Subsequently, when a terminal device needs to use PUCCH to transmit information, the network device can schedule the dedicated PUCCH in the dedicated PUCCH resources in the RRC signaling for the terminal device through the physical downlink control channel (DCI).

[0110] It should be understood that in the embodiment of the present application, only after the terminal device sends feedback information to the network device through the RRC layer to indicate that the terminal device has completed the configuration of the RRC signaling at the RRC layer, can it be considered that the network device has completed the configuration of the dedicated PUCCH, that is, it is considered that the network device has configured the dedicated PUCCH for the terminal device.

[0111] The technical solution of the embodiment of the present application involves a scenario where the terminal device is not configured with a dedicated PUCCH, that is, it involves various scenarios before the network device successfully configures the RRC signaling, including but not limited to: random access (RA) process, RRC signaling configuration process, channel measurement process, etc. Below, the scenarios that may be involved in the embodiment of the present application are described.

[0112] 1. Random Access Process

[0113] Figure 2 It is a schematic flowchart of the random access process provided in an embodiment of the present application.

[0114] In S210, the network device broadcasts a system message in the cell, and correspondingly, the terminal device receives the system message.

[0115] The system message includes information for indicating the time-frequency resources occupied by the terminal device for sending the first message (message1, Msg1 for short).

[0116] Exemplarily, the system message also includes information on cell bandwidth in uplink transmission and downlink transmission, information on time slot configuration in uplink transmission and downlink transmission, and the like.

[0117] In S220, the terminal device sends the first message (Msg1), and correspondingly, the network device receives Msg1.

[0118] Msg1 includes a random access preamble sequence, which is used to inform the network device that there is a random access request. At the same time, it allows the network device to estimate the transmission delay between the network device and the terminal device, and use the transmission delay to calibrate the uplink transmission time of the terminal device.

[0119] The terminal device sends Msg1 on the time-frequency resources according to the time-frequency resources indicated by the system message.

[0120] In S230, the network device sends a second message (message 2, referred to as Msg2). Correspondingly, the terminal device receives Msg2.

[0121] Msg2 is a response message of Msg1, and Msg2 may also be called a random access response message. Msg2 is carried in a downlink shared channel (DL-SCH).

[0122] For example, Msg2 may include the following content:

[0123] The index value of the random access preamble sequence detected by the network device to indicate for which random access Msg2 is valid;

[0124] A scheduling indication to indicate the resources used by the terminal device for the third message to be sent during the random access process;

[0125] A temporary identifier for further communication between the terminal device and the network device. Exemplarily, the temporary identifier may be a temporary cell radio network temporary identity (TC-RNTI). After completing S250, the temporary identifier may become a unique identifier, called a cell radio network temporary identity (C-RNTI).

[0126] If the network device detects multiple random access attempts (from different terminal devices), the response messages for multiple terminal devices can be integrated into one Msg2, and an identifier dedicated to random access response, i.e., random access radio network temporary identity (RA-RNTI), is used to indicate that the terminal device receives its own response message in Msg2. The terminal device can determine whether it has successfully received the response message related to itself through the RA-RNTI and the index of the leading sequence in Msg2. If it receives the response message related to itself, it will continue with subsequent processing.

[0127] In S240, the terminal device sends a third message (message 3, referred to as Msg3), and correspondingly, the network device receives Msg3.

[0128] In the non-contention-based random access, the preamble sequence is dedicated to a certain terminal device, so there is no conflict. Therefore, only the contention-based random access performs S240 and S250 of the random access process.

[0129] The content of Msg3 varies depending on the triggering event of random access.

[0130] 1. If the terminal device is in the initial access state, Msg3 is an RRC connection request transmitted on the common control channel (CCCH), and Msg3 includes at least the non-access stratum (NAS) UE identification information.

[0131] 2. If the terminal device is in the RRC connection re-establishment state, Msg3 is an RRC connection re-establishment request transmitted on CCCH, and Msg3 does not include any NAS message.

[0132] 3. If the terminal device is in a handover state, Msg3 is an encrypted and integrity-protected RRC handover confirmation transmitted on a dedicated control channel (DCCH). Msg3 includes the C-RNTI of the terminal device and, if possible, a buffer status report (BSR).

[0133] 4. For other triggering events, Msg3 includes at least C-RNTI.

[0134] In the above-mentioned cases, no matter what the specific content included in Msg3 is, it at least includes an identifier for uniquely identifying the terminal device for subsequent conflict resolution. Specifically:

[0135] For a terminal device in the RRC connected (RRC_CONNECTED) state, its unique identifier is the C-RNTI;

[0136] For a terminal device in a non-RRC_CONNECTED state, the terminal device will use a unique identifier from the core network (serving-temporary mobile subscriber identity (S-TMSI) or a random number) as its identifier. At this time, the network device needs to communicate with the core network before responding to Msg3;

[0137] When the terminal device is in the RRC_CONNECTED state but the uplink is not synchronized, the terminal device also has its own C-RNTI.

[0138] In addition, uplink transmission usually uses terminal device-specific information, such as C-RNTI, to scramble the UL-SCH data. However, the conflict has not been resolved at this time, and scrambling cannot be based on C-RNTI, but only TC-RNTI. In other words, Msg3 will only use TC-RNTI for scrambling.

[0139] In S250, the network device sends a fourth message (message 4, Msg4 for short). Correspondingly, the terminal device receives Msg4.

[0140] As introduced in S240, the terminal device will carry its own unique identifier in Msg3: C-RNTI or UE identifier from the core network (S-TMSI or a random number). In the conflict resolution mechanism, the network device will carry this unique identifier in Msg4 to specify the winning terminal device. Other terminal devices that did not win the conflict resolution will re-initiate random access.

[0141] If the terminal device is in the RRC_CONNECTED state, the terminal device has a unique identifier C-RNTI in the cell. In S250, if the terminal device wins the conflict resolution, the network device uses this C-RNTI to scramble the physical downlink control channel (PDCCH). When the terminal device receives the PDCCH scrambled with this C-RNTI, it knows that it has successfully accessed.

[0142] If the terminal device is not originally in the RRC_CONNECTED state, the terminal device does not have a C-RNTI in the cell, and its only sign is from the core network (S-TMSI or a random number). In S250, if the terminal device wins the conflict resolution, the network device will send Msg3 back to the terminal device through the UE contention resolution identity MAC control element. The terminal device compares Msg3 and Msg4, and if they match, it knows that it has successfully accessed.

[0143] In S260, the terminal device sends feedback information, where the feedback information is used to indicate that the terminal device successfully receives Msg4.

[0144] It should be understood that only the terminal device that wins the conflict resolution in S250 will send the feedback information, that is, the terminal device sends the feedback information after receiving its own unique identification in Msg4.

[0145] Exemplarily, the feedback information may be an acknowledgement (ACK).

[0146] In this scenario, if the terminal device is in an enhanced coverage scenario, the PUCCH can be repeatedly transmitted, and the PUCCH is used to carry feedback information for Msg4.

[0147] 2. RRC signaling configuration

[0148] For the description of each process in this scenario, please refer to the RRC signaling configuration process introduced when describing the dedicated PUCCH above, which will not be repeated here.

[0149] In this scenario, if the terminal device is in an enhanced coverage scenario, PUCCH can be repeatedly transmitted. The PUCCH can be used to carry feedback information. The feedback information is used to indicate whether the terminal device has successfully received the content sent by the network device. The content can be any possible content sent by the network device to the terminal device before the RRC signaling configuration is completed.

[0150] In some embodiments, the content is RRC signaling, and the feedback information carried on the PUCCH may be feedback information sent by the physical layer of the terminal device, and the feedback information is used to indicate whether the terminal device successfully receives the RRC signaling.

[0151] In one example, if the terminal device successfully receives the RRC signaling, the feedback information may be ACK.

[0152] In another example, if the terminal device fails to successfully receive the RRC signaling, the feedback information may be a negative acknowledgement (NACK).

[0153] 3. Channel Measurement

[0154] Before the RRC signaling configuration is completed, the network device can perform downlink scheduling according to the channel conditions to select the configuration and related parameters of the downlink transmission.

[0155] The network device sends a channel measurement request to the terminal device to instruct the terminal device to perform channel measurement.

[0156] Exemplarily, the channel measurement request may include parameters for channel measurement, for example, the parameters may include a measurement period, a measurement time within the period, and other parameters.

[0157] The terminal device measures the channel states under different transmit beams according to the channel measurement request, and obtains channel state information (CSI) including the different transmit beams.

[0158] In some embodiments, the terminal device sends a CSI measurement result to the network device, where the CSI measurement result includes CSI of different transmit beams, so that the network device determines the transmit beam corresponding to the CSI with good channel quality.

[0159] In other embodiments, the terminal device determines a transmit beam corresponding to a CSI with good channel quality based on CSIs of different transmit beams, and sends the transmit beam to the network device.

[0160] In this scenario, if the terminal device is in an enhanced coverage scenario, the PUCCH can be repeatedly transmitted, and the PUCCH is used to carry feedback information, and the feedback information includes CSI measurement results or transmit beams.

[0161] IV. Resource Indication

[0162] Before the RRC signaling configuration is completed, the network device can indicate the transmission resources occupied by some PUCCHs through information, and the terminal device transmits the PUCCH based on the indicated transmission resources. Exemplarily, the transmission resources include time-frequency resources.

[0163] During an uplink scheduling request (SR), if a terminal device needs to transmit uplink data, the terminal device needs to send a PUCCH for carrying the SR to the network device to inform the network device that it needs to transmit uplink data. The network device allocates transmission resources to the terminal device based on the SR.

[0164] Before the terminal device sends the PUCCH for carrying SR, the network device may send an indication message to the terminal device, where the indication message is used to indicate the transmission resources occupied by the PUCCH for carrying SR. The terminal device sends the PUCCH carrying SR on the transmission resources indicated by the indication message according to the indication message.

[0165] In this scenario, if the terminal device is in an enhanced coverage scenario, the PUCCH used to carry SR can be repeatedly transmitted, and the transmission resources occupied by the PUCCH are determined based on the indication information.

[0166] The following, combined Figure 3 , the method 300 for transmitting the physical uplink control channel in an embodiment of the present application is described in detail.

[0167] Figure 3 It is a schematic flowchart of a method 300 for transmitting a physical uplink control channel provided in an embodiment of the present application.

[0168] In S310, the network device sends a first message, and correspondingly, the terminal device receives the first message.

[0169] In S320, when the terminal device is not configured with a dedicated PUCCH, the first PUCCH is repeatedly transmitted with a repetition number N, and the dedicated PUCCH is a PUCCH configured to the terminal device through high-level signaling, and N is an integer greater than 1, wherein the first PUCCH is used to carry feedback information, and the feedback information is used to indicate whether the terminal device has successfully received the first message, or the feedback information is information related to the channel quality determined based on the first information; or the first PUCCH is determined based on the first message.

[0170] As mentioned above, the first message and the first PUCCH are messages and PUCCHs involved in the scenario where the network device does not configure a dedicated PUCCH for the terminal device. For a detailed description of the dedicated PUCCH, please refer to the above related description, which will not be repeated here.

[0171] The following introduces the first message and the first PUCCH in various possible scenarios.

[0172] In some embodiments, the first message and the first PUCCH are messages and PUCCHs in a random access process. For example, the first message is the fourth message (Msg4) in a random access process, and the first PUCCH is used to carry feedback information for Msg4, that is, the feedback information is used to indicate whether the terminal device successfully receives Msg4. For a specific description of the fourth message (Msg4) and feedback information in a random access process, please refer to the relevant description above, and no further description is given.

[0173] In other embodiments, the first message and the first PUCCH are messages and PUCCHs in the RRC signaling configuration process. For example, the first message is RRC signaling, and the first PUCCH is used to carry feedback information for the RRC signaling. The feedback information may be feedback information sent by the physical layer of the terminal device, and the feedback information is used to indicate whether the terminal device has successfully received the RRC signaling, or, in other words, the feedback information is used to indicate whether the terminal device has successfully received the downlink physical layer shared channel (physical downlink shared channel, PDSCH) used to carry the RRC signaling. For a specific description of the RRC signaling and feedback information in the RRC signaling configuration process, please refer to the relevant description above and will not be repeated.

[0174] In some other embodiments, the first message and the first PUCCH are messages and PUCCHs in a channel measurement process. For example, the first message may be a channel measurement request, and the first PUCCH is used to carry feedback information related to channel quality determined based on the channel measurement request, and the feedback information may include a CSI measurement result or a transmit beam. For a specific description of the channel measurement request and feedback information in the channel measurement process, reference may be made to the relevant description above, and no further description is given.

[0175] In some other embodiments, the first message may be indication information indicating the transmission resources occupied by the PUCCH for carrying the SR, and the first PUCCH is determined based on the indication information, that is, the transmission resources occupied by the first PUCCH are obtained based on the indication information. For the specific description of the indication information and the first PUCCH, reference may be made to the description of the two in the resource indication process above, and no further description is given.

[0176] It should be noted that the number of repetitions N of the first PUCCH has three possible interpretations. The number of repetitions N is the number of repetitions of the first PUCCH for the initial transmission; or, the number of repetitions N is the number of repetitions of the first PUCCH for the retransmission; or, the number of repetitions N is the sum of the number of repetitions of the first PUCCH for the initial transmission and the number of repetitions of the first PUCCH for the retransmission. For example, assuming that the number of repetitions of the first PUCCH for the initial transmission is 2 and the number of repetitions of the first PUCCH for the retransmission is 3, then the number of repetitions N can be 2, 3 or 5.

[0177] In the method for transmitting the physical uplink control channel provided in the embodiment of the present application, when the network device does not configure a dedicated PUCCH for the terminal device, the terminal device can use the repetition number N to repeatedly transmit the first PUCCH related to the first message. In this way, the success rate of the first PUCCH transmission can be improved to improve the transmission efficiency of the communication, and the problem of low transmission efficiency of the communication in the coverage enhancement scenario can be effectively solved.

[0178] In the embodiment of the present application, the number of repetitions N of repeated transmission of PUCCH can be determined by two methods (ie, method 1 and method 2). The two methods are described in detail below.

[0179] Method 1

[0180] In this mode 1, the network device may send indication information for determining the number of repetitions N. That is, the network device sends first indication information, and the first indication information is used to determine the number of repetitions N. Correspondingly, the terminal device receives the first indication information and determines the number of repetitions N based on the first indication information.

[0181] In some embodiments, the first indication information is used to indicate the number of repetitions N.

[0182] In one example, the first indication information may include the number of repetitions N. The terminal device may directly determine the number of repetitions N.

[0183] In another example, the first indication information may include an index for indicating the number of repetitions N. For example, the index may be an index in various cases in the following manner 1-1 and manner 1-2. The terminal device determines the number of repetitions N according to the index.

[0184] In some other embodiments, the first indication information may be used to indicate content related to the number of repetitions N, and the content is related to the number of repetitions N. For example, the content may be a value in the following method 1-3 or the total number of symbols occupied by the repeated transmission of the PUCCH in method 1-4. The terminal device may determine the number of repetitions N based on the content.

[0185] In some embodiments, the first indication information may be carried in the DCI. Exemplarily, the first indication information may be carried in a field in the DCI, which may be a new field or may reuse an existing field (e.g., an MCS field, see the description of the MCS field in Mode 1-1 below).

[0186] In some other embodiments, the first indication information is carried in a system message. Exemplarily, the system message may be a system information block (SIB).

[0187] In some embodiments, the first message includes the first indication information. Exemplarily, when the first indication information is carried in DCI and the first message includes the first indication information, the first message may include the DCI carrying the first indication information. For example, when the first message is the fourth message (Msg4) in the random access process, Msg4 includes DCI, and the DCI includes the first indication information.

[0188] Next, the first indication information in the specific manner in manner 1 is specifically described.

[0189] Method 1-1

[0190] In this method, the number of repetitions N is related to the modulation and coding scheme (MCS).

[0191] In some embodiments, the first message includes first indication information, the first indication information includes a first index, the first index is used to indicate the number of repetitions N, and the first index is also used to indicate a first MCS, the first MCS is used to demodulate at least part of the content of the first message. That is, the first index can indicate the number of repetitions N and the first MCS at the same time.

[0192] In an embodiment where the first message is Msg4, the first indication information may be carried in the DCI in Msg4, the first PUCCH is used to carry feedback information for Msg4, and the first MCS is used to demodulate the data portion in Msg4.

[0193] In implementation, the network device can configure multiple MCSs and multiple repetition times through a system message, multiple MCSs correspond to multiple repetition times, one MCS corresponds to one repetition time, and one index is used to indicate both the MCS and the corresponding repetition time. Subsequently, the network device determines that the terminal device can use a first index to indicate the first MCS and the corresponding repetition time N, and can send the first index through the first indication information. The terminal device determines the first MCS and the repetition time N of the first PUCCH based on the first index and the relationship between the MCS, repetition time and index in the received system message.

[0194] It should be understood that the repetition number N is any one of multiple repetition numbers configured by the network device, and the first MCS is any one of multiple MCSs configured by the network device.

[0195] Exemplarily, the relationship between MCS, the number of repetitions of PUCCH, and the index can be represented by an MCS table.

[0196] Table 1 is an example of an MCS table provided in an embodiment of the present application. Referring to Table 1, the first column in Table 1 represents the MCS index, the second column represents the modulation order, the third column represents the code rate, and the fourth column represents the number of repetitions of PUCCH, wherein one modulation order and one code rate represent one MCS. It can be seen that an MCS index not only indicates the modulation order and code rate of an MCS, but is also used to indicate the number of repetitions N of PUCCH. For example, the index 2 represented by 2 in the first column of Table 1 is 2, the corresponding modulation order is 2, the code rate is 193, and the number of repetitions of PUCCH is 2. Among them, the first index of the first indication information can be any MCS index in Table 1.

[0197] It should be understood that the MCS table in Table 1 adds a column indicating the number of repetitions of PUCCH compared to the existing MCS table, and by reusing the existing MCS index, the MCS index simultaneously indicates the number of repetitions of MCS and PUCCH.

[0198] Table 1

[0199]

[0200]

[0201] The method for physical uplink control channel transmission provided in the embodiment of the present application associates the MCS with the number of repetitions of the PUCCH, and indicates the number of repetitions of the PUCCH at the same time by using an index (for example, the first index) used to indicate the MCS, that is, multiplexing the index used to indicate the MCS. This can not only fully meet the existing MCS indication, but also reduce the number of extra bits due to the separate indication of the number of repetitions N, thereby reducing the signaling overhead.

[0202] When the terminal device needs to transmit PUCCH repeatedly in the coverage enhancement scenario, the MCS with high code rate and high modulation order may not be needed during the transmission process. Therefore, the modulation order and code rate of MCS can be adjusted appropriately, and MCS with low modulation order and low code rate can be used. In this way, some bits can be saved, and the saved bits can be used to indicate the number of repetitions of PUCCH, reducing unnecessary waste of resources.

[0203] Table 2 is another example of the MSC table provided in the embodiment of the present application. Referring to Table 2, the modulation order of Table 2 is all 2, and the code rate is also reduced a lot. Since the MCS with low modulation order and low code rate occupies fewer bits, the number of bits is reduced compared to the MCS with high code rate and high modulation order included in Table 1. For example, the maximum modulation order of Table 1 is 6, which needs to be represented by 3 bits, and the modulation order of Table 2 is all 2, which only needs to be represented by 1 bit, so 2 bits are saved, and the saved 2 bits can be used to represent the number of repetitions of PUCCH.

[0204] Table 2

[0205]

[0206]

[0207] In some other embodiments, the first message includes first indication information, the first indication information includes a first index, the first index is used to indicate the number of repetitions N, and the first index is also used to indicate a first MCS, the first MCS is used to demodulate at least part of the content of the first message; wherein the first index is an index in the MCS table, and the maximum number of bits occupied by the first index is less than 5. That is, the first index can indicate the number of repetitions N and the first MCS at the same time, and the specific description can refer to the relevant description above.

[0208] The first index is any MCS index in the MCS table. When the maximum number of bits occupied by the first index is less than 5, it means that, compared with the case where the maximum number of bits occupied by the index in the MCS table of the prior art is at least equal to 5, the MCS table in the embodiment of the present application is equivalent to reducing a part of the MCS indicated by the index with a large value and retaining a part of the MCS indicated by the index with a smaller value.

[0209] In fact, when the terminal device needs to repeatedly transmit PUCCH in a coverage enhancement scenario, the MCS with high code rate and high modulation order may not be needed during the transmission process. Some MCS with high code rate and high modulation order (indicated by large index value) can be deleted from the MCS table, and some MCS with low code rate and low modulation order (indicated by small index value) can be retained. In this way, additional resource overhead can be reduced.

[0210] Table 3 is another example of an MCS table provided in an embodiment of the present application. Referring to Table 3, compared with Table 1, Table 3 only retains indexes 0-15 in Table 1, and the maximum number of bits occupied is 4, which is less than the 5 bits occupied by indexes 0-31 in Table 1.

[0211] Table 3

[0212]

[0213]

[0214] The method for physical uplink control channel transmission provided in the embodiment of the present application, as the first index of any MCS index in the MCS table, when the maximum number of bits occupied by the first index is less than 5, means that, compared with the case where the maximum number of bits occupied by the index in the MCS table of the prior art is at least equal to 5, the MCS table in the embodiment of the present application is equivalent to deleting a part of the MCS indicated by the index with a large value, and retaining a part of the MCS indicated by the index with a smaller value. First, by deleting the MCS in the MCS table, the number of occupied bits can be reduced, and resource waste can be reduced. Second, since a high-performance MCS may not be required in the coverage enhancement scenario, the MCS deleted from the MCS table has basically no effect on the communication transmission in the coverage enhancement scenario, and can fully meet the communication transmission in the coverage enhancement scenario.

[0215] Exemplarily, in a random access scenario, the first message is Msg4, Msg4 includes DCI, DCI includes first indication information, the first index in the first indication information indicates the number of repetitions N of the first MCS and the first PUCCH, the first MCS is used to demodulate the data part in Msg4, and the first PUCCH is used to carry feedback information for Msg4, and the feedback information is used to indicate that the terminal device has successfully received Msg4.

[0216] In the implementation, the network device sends Msg4 to the terminal device;

[0217] The terminal device receives Msg4, demodulates the data part in Msg4 according to the first MCS indicated by the first indication information of the DCI in Msg4, and determines the number of repetitions N of the first PUCCH according to the first indication information;

[0218] The terminal device uses a repetition number N to repeatedly transmit the first PUCCH carrying feedback information for Msg4.

[0219] Exemplarily, the network device may configure the contents of Tables 1 to 3 above through system messages.

[0220] As mentioned above, when the terminal device is in a coverage enhancement scenario and needs to repeatedly transmit PUCCH, the MCS with high code rate and high modulation order may not be needed during the transmission process. Some MCS with high code rate and high modulation order can be deleted from the existing MCS table (represented by an index with a large value), and some MCS with low code rate and low modulation order can be retained (represented by an index with a small value). In this way, since a part of the MCS is deleted, a part of the bits are saved, and the number of bits occupied by the index used to indicate the MCS is naturally reduced. Then, the number of bits reserved for the MCS field used to indicate the MCS in the existing DCI is more than the number of bits occupied in the actual indication process. Therefore, in order to avoid unnecessary waste of resources, the excess bits in the MCS field can be used to indicate the number of repetitions of the PUCCH.

[0221] Therefore, in some other embodiments, the first message includes first indication information, which is carried on a first part of bits in the MCS field of the DCI; and the MCS field also includes a second part of bits, which is used to carry MCS information used to indicate a first MCS, and the first MCS is used to demodulate at least part of the content of the first message, wherein the first indication information includes a first index used to indicate the number of repetitions N, and the MCS information includes a second index used to indicate the first MCS, and the second index is an index in the MCS table, and the maximum number of bits occupied by the second index is less than 5.

[0222] In this embodiment, the MCS field in the DCI includes a first part of bits and a second part of bits, the first part of bits is used to carry a first index for indicating the number of repetitions N of the first PUCCH, and the second part of bits is used to carry a second index for indicating the first MCS. The second index is any index in the MCS table, and the maximum number of bits occupied is less than 5, which means that compared with the case where the maximum number of bits occupied by the index in the MCS table of the prior art is at least equal to 5, the MCS table of this embodiment deletes a part of the MCS indicated by the index with a large value, and retains a part of the MCS indicated by the index with a smaller value. In this way, the number of occupied bits can be reduced by deleting the MCS in the MCS table. On this basis, the number of repetitions of the PUCCH can be additionally indicated in the existing MCS field, and the effect of reducing resource waste can be further achieved by reusing the existing MCS field.

[0223] Table 4 is another example of an MCS table provided in an embodiment of the present application. Referring to Table 4, the MCS table does not include the content of the number of repetitions of PUCCH, and the MCS table only includes the MCS indicated by the index 0-7, which is 24 less than the existing MCS indicated by the index 0-31, saving a lot of bits.

[0224] In addition, since the index in the existing MCS table is 0-31, the MCS field in the existing DCI includes at least 5 bits. Taking 5 bits as an example, in this embodiment, the second part of the bits in the MCS field used to carry the indication of the first MCS can occupy 3 bits, and the remaining 2 bits are used as the first part of the bits to carry the index indicating the number of repetitions N.

[0225] Table 4

[0226]

[0227]

[0228] It should be understood that in this embodiment, the network device can configure multiple repetition times of PUCCH in any possible way, and one index indicates one repetition time. For example, the network device can configure the correspondence between the repetition times and the index of PUCCH, and send the correspondence to the terminal device. Subsequently, the terminal device can determine the repetition time N indicated by the first index based on the first index in the MCS field and the correspondence.

[0229] It should also be understood that the correspondence between the number of repetitions of PUCCH and the index can be expressed by a table, and the embodiments of the present application do not impose any limitation thereto.

[0230] It should be noted that in DCI, the field adjacent to the MCS field may be a new data indication field, and the first part of bits and the second part of bits may also be understood as two subfields respectively, and any subfield may be adjacent to the new data indication field.

[0231] Exemplarily, in a random access scenario, the first message is Msg4, Msg4 includes DCI, DCI includes an MCS field, the MCS field includes a first part of bits and a second part of bits, the first part of bits is used to carry first indication information, the first indication information includes a first index for indicating the number of repetitions N of the first PUCCH, the second part of bits is used to carry MCS information, the MCS information includes a second index for indicating the first MCS, the first MCS is used to demodulate the data part in Msg4, the first PUCCH is used to carry feedback information for Msg4, and the feedback information is used to indicate that the terminal device has successfully received Msg4.

[0232] In the implementation, the network device sends Msg4 to the terminal device;

[0233] The terminal device receives Msg4, demodulates the data part in Msg4 according to the first MCS indicated by the MCS information of the DCI, and determines the number of repetitions N of the first PUCCH according to the first indication information in the DCI;

[0234] The terminal device uses a repetition number N to repeatedly transmit the first PUCCH carrying feedback information for Msg4.

[0235] Exemplarily, the network device may configure the content of the above Table 4 through a system message.

[0236] Method 1-2

[0237] In this manner, the first indication information is used to indicate the number of repetitions N, and the first indication information is carried in the DCI.

[0238] In some embodiments, the first indication information is not only used to indicate the number of repetitions N, but also can be used to indicate other parameters of the first PUCCH.

[0239] Exemplarily, other parameters of the first PUCCH include at least one of the following parameters: PUCCH format (PUCCHformat), the first symbol (first symbol) occupied by PUCCH (referred to as the first symbol), the number of symbols (number of symbols) occupied by PUCCH (referred to as the number of symbols), physical resource block (physical resource block, PRB) offset (PRBoffset), cyclic shift index set (set of initial CS indexes). Among them, the time-frequency resources occupied by PUCCH can be determined by the first symbol, the number of symbols, and the PRB offset. In addition, the number of symbols here represents the number of symbols occupied by a single transmission PUCCH.

[0240] In this embodiment, the existing PUCCH resource can be associated with the number of repetitions of the PUCCH proposed in the embodiment of the present application to define a new PUCCH resource. The new PUCCH resource includes the number of repetitions of the PUCCH proposed in the embodiment of the present application and the existing PUCCH resource. Subsequently, while indicating the number of repetitions N of the first PUCCH through the first indication information, other parameters of the first PUCCH can also be indicated. Among them, the other parameters of the first PUCCH are the parameters in the existing PUCCH resources.

[0241] Regarding the existing PUCCH resources, it should be noted that before the network device configures a dedicated PUCCH for the terminal device, in order to realize the transmission of PUCCH, in the prior art, the network device can configure a group of PUCCH resources (existing PUCCH resources) applicable to a specific cell, and the terminal device performs uplink transmission based on these PUCCH resources. Among them, these PUCCH resources are sent to the terminal device through a system message. It should be understood that the prior art defaults to transmitting PUCCH once.

[0242] For the convenience of description, the existing PUCCH resources described above can be collectively referred to as old PUCCH resources, and the PUCCH resources that are different from the old PUCCH resources in the embodiment of the present application can be collectively referred to as new PUCCH resources. The resources including the old PUCCH resources and the number of repetitions of PUCCH in this embodiment can be recorded as the first new PUCCH resources. It should be understood that the new PUCCH resources can be PUCCH resources configured by the network device separately for the terminal device in the coverage enhancement scenario.

[0243] In addition, compared to the dedicated PUCCH, the old PUCCH resources and the new PUCCH resources in the embodiment of the present application can also be understood as common PUCCH resources (pucch-resource common), which are PUCCH resources applicable to terminal devices in a specific cell. In order to further distinguish, the old PUCCH resources can be collectively referred to as common PUCCH resources 1 (pucch-resourcecommon1), the new PUCCH resources can be collectively referred to as common PUCCH resources 2 (pucch-resource common2), and the first new PUCCH resource is recorded as an example of common PUCCH resource 2 (pucch-resource common2).

[0244] In implementation, the network device may configure the first new PUCCH resource (an example of pucch-resourcecommon2) through a system message, and use an index to indicate the PUCCH in the first new PUCCH resource, that is, the index is used to indicate various parameters of the PUCCH in the first new PUCCH resource. Exemplarily, the index may be used to indicate the PUCCH format, the first symbol, the number of symbols, the PRB offset, the cyclic shift index set, and the number of repetitions of the PUCCH.

[0245] Subsequently, the network device sends an index (denoted as the third index) through the first indication information, and the terminal device determines the number of repetitions N and other parameters of the first PUCCH based on the third index and the relationship between the first new PUCCH resource and the index in the received system message.

[0246] That is, in this manner, the first indication information includes a third index, and the third index is used to indicate the number of repetitions N, and is also used to indicate other parameters of the first PUCCH.

[0247] Exemplarily, the relationship between the first new PUCCH resource and the index may be represented by a table.

[0248] Table 5 is an example of the first new PUCCH resource (pucch-resource common2) provided in an embodiment of the present application. It is emphasized again that the first column in Table 5 represents the index, the second column represents the PUCCH format, the third column represents the first symbol, the fourth column represents the number of symbols, which represents the number of symbols occupied by a single transmission of PUCCH, the fifth column represents the PRB offset, the sixth column represents the cyclic shift index set, and the seventh column represents the number of repetitions of PUCCH. Taking the index of 2 as an example, the corresponding PUCCH format is format 0, the first symbol is 12, the number of symbols is 2, the PRB offset is 3, the cyclic shift index set is {0,4,8}, and the number of repetitions of PUCCH is 4.

[0249] Table 5

[0250]

[0251] Exemplarily, in a random access scenario, the first message is Msg4, Msg4 includes DCI, DCI includes first indication information, the first indication information includes a third index for indicating the number of repetitions N and other parameters of the first PUCCH, the first PUCCH is used to carry feedback information for Msg4, and the feedback information is used to indicate that the terminal device has successfully received Msg4.

[0252] In the implementation, the network device sends Msg4 to the terminal device;

[0253] The terminal device receives Msg4, and determines other parameters and the number of repetitions N of the first PUCCH according to the first indication information of the DCI;

[0254] The terminal device uses the repetition number N and other parameters to repeatedly transmit the first PUCCH carrying feedback information for Msg4.

[0255] Exemplarily, the network device may configure the content of the above Table 5 through a system message.

[0256] Method 1-3

[0257] In this manner, the number of repetitions of the PUCCH is related to the total number of symbols occupied by the repeated transmission of the PUCCH. In this way, the terminal device can determine the number of repetitions of the PUCCH according to the total number of symbols.

[0258] In some embodiments, the first message includes first indication information, and the first indication information is used to indicate the total number of symbols occupied by repeated transmission of the first PUCCH, and the number of repetitions N is related to the total number of symbols and the number of symbols occupied by a single transmission of the first PUCCH.

[0259] In this way, the terminal device can determine the total number of symbols according to the first indication information, and determine the number of repetitions N based on the relationship between the total number of symbols, the number of symbols occupied by the single transmission of the first PUCCH, and the number of repetitions N.

[0260] Exemplarily, the relationship between the total number of symbols, the number of symbols occupied by the first PUCCH in a single transmission, and the number of repetitions N may be predefined by the system or protocol.

[0261] In one example, the quotient of the total number of symbols and the number of symbols occupied by the first PUCCH in a single transmission is the number of repetitions N. For example, assuming that the total number of symbols is 8 and the number of symbols occupied by the first PUCCH in a single transmission is 2, then the number of repetitions N=8 / 2=4.

[0262] Exemplarily, the number of symbols occupied by a single transmission of the first PUCCH may be predefined by the system or protocol, or may be indicated by a network device through signaling, and the embodiments of the present application do not impose any limitation thereto.

[0263] Exemplarily, the first indication information may include an index (denoted as a fourth index), where the fourth index is used to indicate the total number of symbols occupied by the first PUCCH.

[0264] In implementation, the network device can configure the PUCCH resources through the system message, and use the index to indicate the PUCCH in the PUCCH resources. Subsequently, the network device sends the fourth index through the first indication information, and the terminal device determines the total number of symbols based on the fourth index and the PUCCH resources in the received system message, and determines the number of repetitions N based on the relationship between the total number of symbols, the number of symbols occupied by the first PUCCH in a single transmission, and the number of repetitions.

[0265] Among them, the PUCCH in the PUCCH resource may include at least one of the following parameters: PUCCH format, the first symbol occupied by PUCCH (abbreviated as, the first symbol), the total number of symbols occupied by PUCCH (abbreviated as, the number of symbols), PRB offset, and cyclic shift index set.

[0266] In one example, the number of symbols occupied by a PUCCH in a single transmission can be obtained by the number of the first symbol.

[0267] For example, a time slot includes 14 symbols, and the 14 symbols can be indicated by numbers 0 to 13. Assuming that the number of the first symbol is 12, and the last symbol in a time slot is assumed to be the end symbol of the PUCCH, then it can be determined that the symbols occupied by a single transmission of a PUCCH are the symbols numbered 12 and 13, that is, the number of symbols occupied by a single transmission of a PUCCH is 2.

[0268] It should be understood that the PUCCH resources of this embodiment can be understood as PUCCH resources obtained by modifying the existing PUCCH resources, that is, the number of symbols occupied by a single transmission of PUCCH in the existing PUCCH resources is modified to the total number of symbols, and the other parameters can remain unchanged.

[0269] For the convenience of description, the definition of old PUCCH resources and new PUCCH resources in method 1-2 is followed, and the new PUCCH resources including the old PUCCH resources and the total symbols proposed in the embodiment of the present application in this embodiment can be recorded as the second new PUCCH resources; for further distinction, the second new PUCCH resources are recorded as another example of common PUCCH resources 2 (pucch-resource common2).

[0270] Table 6 is another example of the second new PUCCH resource (pucch-resource common2) provided in an embodiment of the present application. Referring to Table 6, the number of symbols is the total number of symbols occupied by a PUCCH repeated transmission, and the remaining parameters can be the same as the old PUCCH resource. Taking the first PUCCH as an example, the PUCCH with index 2, the corresponding total number of symbols is 8, and the first symbol is 12. It can be determined that the number of symbols occupied by the first PUCCH in a single transmission is 2, and the number of repetitions N = 8 / 2 = 4.

[0271] Table 6

[0272]

[0273]

[0274] Exemplarily, in a random access scenario, the first message is Msg4, Msg4 includes DCI, DCI includes first indication information, the first indication information includes information used to indicate the total number of symbols occupied by repeated transmission of the first PUCCH, the number of repetitions N of the first PUCCH is related to the total number of symbols and the number of symbols occupied by a single transmission of the first PUCCH, the first PUCCH is used to carry feedback information for Msg4, and the feedback information is used to indicate that the terminal device has successfully received Msg4.

[0275] In the implementation, the network device sends Msg4 to the terminal device;

[0276] The terminal device receives Msg4, determines the total number of symbols occupied by the repeated transmission of the first PUCCH according to the first indication information of the DCI, and determines the number of repetitions N according to the relationship between the total number of symbols, the number of repetitions N of the first PUCCH, the total number of symbols, and the number of symbols occupied by the single transmission of the first PUCCH;

[0277] The terminal device uses the repetition number N to repeatedly transmit the first PUCCH carrying feedback information for Msg4.

[0278] Exemplarily, the network device may configure the content of the above Table 6 through a system message.

[0279] The method for physical uplink control channel transmission provided in the embodiment of the present application associates the number of repetitions N of the first PUCCH with the total number of symbols occupied by the repeated transmission of the first PUCCH. The terminal device can obtain the number of repetitions N through the total number of symbols indicated by the network device. In this way, the number of symbols occupied by a single transmission of PUCCH in the existing standard PUCCH resources can be modified to the total number of symbols. The changes to the existing PUCCH resources are relatively small and easy to implement.

[0280] Method 1-4

[0281] In this manner, the number of repetitions of the PUCCH is related to a numerical value, and the terminal device can determine the number of repetitions of the PUCCH based on the numerical value.

[0282] In some embodiments, the first message includes first indication information, and the first indication information is used to indicate a first value, and the first value is related to the number of repetitions N. That is, there is an association relationship between the first value and the number of repetitions N, and the terminal device can determine the number of repetitions N based on the first value and the relationship between the first value and the number of repetitions N.

[0283] Exemplarily, the first indication information may be carried in DCI.

[0284] Exemplarily, the relationship between the first value and the number of repetitions N may be predefined by the system or protocol.

[0285] Exemplarily, the first value is smaller than the number of repetitions N. In this way, compared with the case where the first indication information includes N, the number of bits can be effectively reduced to reduce signaling overhead.

[0286] In one example, the first value and the number of repetitions N satisfy the relationship: N=2^x, where x is the first value. For example, x=3, then N=2^3=8.

[0287] In another example, the first value and the number of repetitions N satisfy the relationship: N=2+x, where x is the first value. For example, x=3, then N=2+3=5.

[0288] It should be understood that the relationship between the first numerical value and the number of repetitions N in the above example is only for illustrative purposes and should not be construed as limiting the embodiments of the present application. Any other relationship that can represent the first numerical value and the number of repetitions N is applicable to the embodiments of the present application and is also within the scope of protection of the embodiments of the present application.

[0289] Exemplarily, in a random access scenario, the first message is Msg4, Msg4 includes DCI, DCI includes first indication information, the first indication information is used to indicate a first numerical value, and the first numerical value is related to the number of repetitions N of the first PUCCH. The first PUCCH is used to carry feedback information for Msg4, and the feedback information is used to indicate that the terminal device has successfully received Msg4.

[0290] In the implementation, the network device sends Msg4 to the terminal device;

[0291] The terminal device receives Msg4, and determines the number of repetitions N of the first PUCCH according to the first value indicated by the first indication information of the DCI and the relationship between the first value and the number of repetitions N of the first PUCCH;

[0292] The terminal device uses the repetition number N to repeatedly transmit the first PUCCH carrying feedback information for Msg4.

[0293] The method for transmitting a physical uplink control channel provided in an embodiment of the present application, by associating a first numerical value with the number of repetitions N of the first PUCCH, the terminal device can obtain the number of repetitions N according to the first numerical value in the first indication information. Compared with the case where N is included in the first indication information, the number of bits can be effectively reduced to a certain extent to reduce signaling overhead.

[0294] Method 1-5

[0295] In this manner, the number of repetitions of the PUCCH may be indicated via a system message.

[0296] That is, in some embodiments, the first indication information is used to indicate the number of repetitions N, and the first indication information is carried in a system message. In other words, before the network device sends the first message, the method further includes: the network device sends a system message, and the system message includes the first indication information for indicating the number of repetitions N.

[0297] Correspondingly, the terminal device receives the system message and determines the number of repetitions N based on the system message. Exemplarily, in an embodiment in which the network device sends the first indication information via a system message, the network device can configure a fixed number of repetitions for the terminal device, and when the terminal device needs to repeatedly transmit the PUCCH, the fixed number of repetitions of the PUCCH is used regardless of the type of information carried by the PUCCH.

[0298] In one example, the method in which the system message indicates the number of repetitions N through the first indication information can be combined with the above-mentioned method 1-2, that is, the number of repetitions of PUCCH is associated with the existing PUCCH resources, and the number of repetitions and other parameters of PUCCH are indicated by indexes. For example, the value of the number of repetitions of PUCCH in Table 5 can be set to a fixed value, so that the first indication information includes an index (denoted as the fifth index), and the fifth index is used to indicate the number of repetitions N and other parameters of PUCCH.

[0299] Exemplarily, in a random access scenario, the system message includes first indication information, the first indication information is used to indicate the number of repetitions N of the first PUCCH, the first message is Msg4, the first PUCCH is used to carry feedback information for Msg4, and the feedback information is used to indicate that the terminal device successfully receives Msg4.

[0300] In the implementation, the network device sends a system message to the terminal device;

[0301] The terminal device determines the number of repetitions N of the first PUCCH according to the first indication information in the system message;

[0302] The terminal device sends Msg1 to the network device, the network device sends Msg2 to the terminal device, the terminal device sends Msg3 to the network device, and the network device sends Msg4 to the terminal device;

[0303] The terminal device uses the repetition number N to repeatedly transmit the first PUCCH carrying feedback information for Msg4.

[0304] In each of the above-mentioned methods 1, the network device enables the terminal device to determine the number of repetitions N through the first indication information. In fact, when the terminal device does not need coverage enhancement, the terminal device can use the existing single transmission PUCCH, and the network device does not need to indicate the number of repetitions, which can effectively reduce unnecessary signaling overhead.

[0305] Therefore, in order to reduce signaling overhead, in some embodiments, the method further includes:

[0306] The terminal device sends capability information, where the capability information is used to indicate that the terminal device supports or is in a coverage enhancement scenario.

[0307] After receiving the capability information, the network device may determine whether it needs to send content related to the number of repetitions N to the terminal device.

[0308] In one example, the capability information is used to indicate that the terminal device supports the coverage enhancement scenario.

[0309] In one case, as long as the network device receives the capability information, it considers that the terminal device needs coverage enhancement and subsequently sends information related to the number of repetitions N.

[0310] In another case, after receiving the capability information, the network device can further determine whether the terminal device needs coverage enhancement based on the signal strength of the uplink signal. For example, even if the terminal device supports the coverage enhancement scenario and the signal strength of the uplink signal is not bad, the network device believes that the terminal device does not need coverage enhancement for the time being and will not send the first indication information related to the number of repetitions N. For another example, if the terminal device supports the coverage enhancement scenario and the signal strength of the uplink signal is not good, the network device believes that the terminal device needs coverage enhancement and will subsequently send the first indication information related to the number of repetitions N.

[0311] In another example, the capability information is used to indicate that the terminal device is in a coverage enhancement scenario.

[0312] In this example, the network device receives the capability information and sends first indication information related to the number of repetitions N.

[0313] Exemplarily, the terminal device can determine whether it is in a coverage enhancement scenario based on factors such as channel quality, interference, noise, and cell location, and send the capability information when it is in a coverage enhancement scenario. For example, if the terminal device is at the edge of a cell, the terminal device is likely to be in a coverage enhancement scenario.

[0314] Exemplarily, the terminal device may determine whether it is in an enhanced coverage scenario according to the strength of the received signal. For example, if the strength of the signal received by the terminal device is lower than a threshold value, the terminal device may determine that it is in an enhanced coverage scenario.

[0315] During the random access process, the capability information may include at least one of the following contents. The network device determines whether to send the first indication information related to the number of repetitions N based on the contents in the capability information.

[0316] 1. The preamble sequence corresponding to the coverage enhancement scenario in the first message during the random access process. In other words, the preamble sequence corresponds to the coverage enhancement scenario.

[0317] It should be understood that the preamble sequence of the random access process may also be referred to as a random access preamble sequence, and the two descriptions may be interchangeable.

[0318] In the implementation, each cell has multiple (for example, 64) preamble sequences available for terminal devices to select, wherein a portion of the preamble sequences in the multiple preamble sequences correspond to the enhanced coverage scenario, and another portion of the preamble sequences in the multiple preamble sequences are irrelevant to the coverage enhancement scenario. If the terminal device determines that it supports or is in the coverage enhancement scenario, it selects a preamble sequence in a portion of the preamble sequences corresponding to the coverage enhancement scenario and sends it to the network device.

[0319] 2. The format of the demodulation reference signal (DMRS) corresponding to the coverage enhancement in the third message in the random access process, or the uplink control information corresponding to the coverage enhancement in the third message.

[0320] That is, the DMRS corresponds to the coverage enhancement scenario, or the uplink control information corresponds to the coverage enhancement scenario. For example, the format of the uplink control information may correspond to the coverage enhancement scenario.

[0321] For DMRS, in implementation, a portion of the multiple DMRSs corresponds to the enhanced coverage scenario, and another portion of the multiple DMRSs is irrelevant to the coverage enhancement scenario. If the terminal device determines that it supports or is in the coverage enhancement scenario, it selects a DMRS from the portion of DMRSs corresponding to the coverage enhancement scenario and sends it to the network device.

[0322] Similarly, for the format of the uplink control information, in implementation, some of the multiple formats of the uplink control information correspond to the enhanced coverage scenario, and another part of the multiple formats are irrelevant to the coverage enhancement scenario. If the terminal device determines that it supports or is in the coverage enhancement scenario, it selects a format from the part of the formats corresponding to the coverage enhancement scenario as the format of the uplink control information, and sends the uplink control information in the format corresponding to the coverage enhancement scenario to the network device.

[0323] 3. The third message is sent repeatedly during the random access process a number of times M, where M is a positive integer greater than 1.

[0324] Method 2

[0325] In this manner, the network device does not need to indicate the number of repetitions N of the PUCCH to the terminal device through the first indication information, and the terminal device can determine the number of repetitions N of the PUCCH by itself.

[0326] In some embodiments, the first message is the fourth message (Msg4) of the random access process; and the number of repetitions N is related to the number of repetitions M of the third message (Msg3) repeatedly sent by the terminal device during the random access process, and M is a positive integer greater than 1.

[0327] That is to say, there is a relationship between the number of repetitions N of the first PUCCH and the number of repetitions M of the third message (Msg3). The terminal device can determine the number of repetitions N of the first PUCCH to be sent based on the number of repetitions M of the third message (Msg3) sent by itself.

[0328] In some embodiments, the relationship between the number of repetitions N and the number of repetitions M may be predefined by the system or protocol.

[0329] In one example, the number of repetitions N is equal to the number of repetitions M.

[0330] In another example, the number of repetitions N is related to the number of repetitions M and a preset value. Exemplarily, the preset value may be predefined by a system or a protocol.

[0331] Exemplarily, the number of repetitions N, the number of repetitions M and the preset value may satisfy any of the following relationships, wherein n is a preset value, for example, n=2: N=M / n; or, or, Or, N=M–n.

[0332] It should be understood that the relationship between the number of repetitions N and the number of repetitions M in the above example is only for illustrative purposes and should not be construed as limiting the embodiments of the present application. Any other relationship that can represent the number of repetitions N and the number of repetitions M is applicable to the embodiments of the present application and is also within the scope of protection of the embodiments of the present application.

[0333] Regarding the number of repetitions M of the third message (Msg3), there are three possible explanations in the embodiments of the present application: the number of repetitions M is the number of repetitions of the initial transmission of the third message; or, the number of repetitions M is the number of repetitions of the retransmission of the third message; or, the number of repetitions M is the sum of the number of repetitions of the initial transmission of the third message and the number of retransmissions of the third message.

[0334] In this manner, the terminal device may also send capability information to the network device, so that the network device knows that the terminal device is likely to repeatedly send the first PUCCH, so as to identify the repeatedly sent first PUCCH.

[0335] The embodiments of the present application all involve repeated transmission of PUCCH. In order to reduce the conflict between the resources occupied by PUCCH in the scenario of repeated transmission of PUCCH and the existing scenario of single transmission of PUCCH, the resources occupied by the repeatedly transmitted PUCCH can be further divided.

[0336] In some embodiments, in the N repeated transmissions of the first PUCCH, resources occupied by the N-1 transmission of the first PUCCH are offset by m1 frequency domain units relative to the resources occupied by the 1st transmission, the N-1 transmission is the transmission after the 1st transmission, and m1 is a positive integer greater than 0.

[0337] In this embodiment, the resources occupied by the first PUCCH for the first transmission may be the resources occupied by the existing PUCCH for the first transmission, and the resources occupied by the first PUCCH for the N-1 transmission are redefined in the embodiment of the present application, and are offset by m1 frequency domain units relative to the resources occupied by the first PUCCH for the first transmission. For example, taking Table 5 as an example, the PRB offset in Table 5 may represent the frequency domain unit occupied by the existing PUCCH for the first transmission. If the first PUCCH is the PUCCH indicated by the index "2", then the number of repetitions of the first PUCCH is 4, the PRB offset of the resources occupied by the first transmission of the first PUCCH is "3", and the resources occupied by the remaining three transmissions of the first PUCCH are offset by m1 frequency domain units relative to the resources with a PRB offset of "3".

[0338] In some other embodiments, resources occupied by the N repeated transmissions of the first PUCCH are offset by m2 frequency domain units relative to a reference frequency domain unit, where m2 is a positive integer greater than 0.

[0339] In one example, the reference frequency domain unit may be a frequency domain unit for an existing first PUCCH transmission, and the reference frequency domain unit is represented by a PRB offset. For example, continuing with Table 5, if the first PUCCH is the PUCCH indicated by the index "2", the PRB offset of the resources occupied by the first PUCCH transmission is "3", and in the case of repeated transmission of the first PUCCH, the number of repetitions N is 4, then the resources occupied by the four transmissions of the first PUCCH are offset by m2 frequency domain units relative to the frequency domain unit with a PRB offset of "3".

[0340] In another example, the reference frequency domain unit may be the frequency domain unit with the smallest number in the frequency domain resources configured by the system. For example, if the frequency domain unit with the smallest number in the frequency domain resources is the frequency domain unit numbered "0", in the case of repeated transmission of the first PUCCH, the number of repetitions N is 4, then the resources occupied by the four transmissions of the first PUCCH are offset by m2 frequency domain units relative to the frequency domain unit numbered "0".

[0341] Above, combined Figures 1 to 3 , describes in detail the method for transmitting the physical uplink control channel provided in the embodiment of the present application, and will be combined with Figures 4 to 5 , describe in detail the device provided according to the embodiment of the present application.

[0342] Figure 4 The device 400 provided in the embodiment of the present application is shown, and the device 400 may be a terminal device or a network device, or may be a chip in the terminal device or the network device. The device 400 includes: a communication unit 410 .

[0343] In a possible implementation, the apparatus 400 is used to execute each process and step corresponding to the terminal device in the above method 300.

[0344] The communication unit 410 is used to receive a first message;

[0345] The communication unit 410 is also used to, when the terminal device is not configured with a dedicated physical uplink control channel PUCCH, repeatedly transmit the first PUCCH using a repetition number N, wherein the dedicated PUCCH is configured to the terminal device by a network device through a high-level signaling, and N is an integer greater than 1; wherein,

[0346] The first PUCCH is used to carry feedback information, and the feedback information is used to indicate whether the terminal device successfully receives the first message, or the feedback information is information related to channel quality determined based on the first message; or the first PUCCH is determined based on the first message.

[0347] The communication unit 410 may be used to execute the processes and steps corresponding to the terminal device in steps S310 and S320 in the method 300 .

[0348] In another possible implementation, the apparatus 400 is used to execute each process and step corresponding to the network device in the above method 300.

[0349] The communication unit 410 is used to send a first message;

[0350] The communication unit 410 is also used to, when the terminal device is not configured with a dedicated physical uplink control channel PUCCH, repeatedly receive the first PUCCH using a repetition number N, where the dedicated PUCCH is configured to the terminal device by a network device through a high-layer signaling, and N is an integer greater than 1; wherein,

[0351] The first PUCCH is used to carry feedback information, and the feedback information is used to indicate whether the terminal device successfully receives the first message, or the feedback information is information related to channel quality determined based on the first message; or the first PUCCH is determined based on the first message.

[0352] The communication unit 410 may be used to execute the processes and steps corresponding to the network devices in steps S310 and S320 of the method 300 .

[0353] It should be understood that the specific process of each unit executing the corresponding steps in the above methods has been described in detail in the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0354] It should be understood that the device 400 herein is embodied in the form of a functional unit. The term "unit" herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (e.g., a shared processor, a dedicated processor, or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combined logic circuit, and / or other suitable components that support the described functions.

[0355] The device 400 of each of the above-mentioned schemes has the function of implementing the corresponding steps executed by the access network device or the core network device in the above-mentioned method; the function can be implemented by hardware, or by hardware executing the corresponding software implementation. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the communication unit can be replaced by a transmitter and a receiver, and other units, such as a processing unit, can be replaced by a processor, respectively performing the receiving and sending operations and related processing operations in each method embodiment. In addition, the communication unit in the device 400 can also be composed of a sending unit and a receiving unit. For performing operations related to receiving, the function of the communication unit can be understood as a receiving operation performed by the receiving unit, and for performing operations related to sending, the function of the communication unit can be understood as a sending operation performed by the sending unit.

[0356] In the embodiments of the present application, Figure 4 The device in the embodiment may also be a chip or a chip system, such as a system on chip (SoC). Correspondingly, the transceiver unit may be a transceiver circuit of the chip, which is not limited here.

[0357] Figure 5 It is understood that the device 500 may be specifically a terminal device or a network device in the above embodiment, and may be used to execute each step and / or process corresponding to the terminal device or the network device in the above method embodiment.

[0358] The device 500 includes a processor 510, a transceiver 520, and a memory 530. The processor 510, the transceiver 520, and the memory 530 communicate with each other through an internal connection path. The processor 510 can implement the function of the processing unit 420 in various possible implementations of the device 400, and the transceiver 520 can implement the function of the communication unit 410 in various possible implementations of the device 400. The memory 530 is used to store instructions, and the processor 510 is used to execute the instructions stored in the memory 530, or in other words, the processor 510 can call these stored instructions to implement the function of the processor 510 in the device 500 to control the transceiver 520 to send signals and / or receive signals.

[0359] Optionally, the memory 530 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory. For example, the memory may also store information about the device type. The processor 510 may be used to execute instructions stored in the memory, and when the processor 510 executes instructions stored in the memory, the processor 510 is used to execute the various steps and / or processes of the above-mentioned method embodiment corresponding to the access network device or the core network device.

[0360] In a possible implementation, the apparatus 500 is used to execute each process and step corresponding to the terminal device in the above method 300.

[0361] The processor 510 controls the transceiver 520 to perform the following steps:

[0362] receiving a first message;

[0363] In the case where the terminal device is not configured with a dedicated physical uplink control channel PUCCH, the first PUCCH is repeatedly transmitted using a repetition number N, where the dedicated PUCCH is configured to the terminal device by a network device through a high-layer signaling, and N is an integer greater than 1; wherein,

[0364] The first PUCCH is used to carry feedback information, and the feedback information is used to indicate whether the terminal device successfully receives the first message, or the feedback information is information related to channel quality determined based on the first message; or the first PUCCH is determined based on the first message.

[0365] In another possible implementation, the apparatus 500 is used to execute each process and step corresponding to the network device in the above method 300.

[0366] The processor 510 controls the transceiver 520 to perform the following steps:

[0367] Sending a first message;

[0368] In the case where the terminal device is not configured with a dedicated physical uplink control channel PUCCH, the first PUCCH is repeatedly received using a repetition number N, where the dedicated PUCCH is configured to the terminal device by a network device through a high-layer signaling, and N is an integer greater than 1; wherein,

[0369] The first PUCCH is used to carry feedback information, and the feedback information is used to indicate whether the terminal device successfully receives the first message, or the feedback information is information related to channel quality determined based on the first message; or the first PUCCH is determined based on the first message.

[0370] It should be understood that the specific process of each device executing the corresponding steps in the above methods has been described in detail in the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0371] It should be understood that in the embodiments of the present application, the processor of the above-mentioned device may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0372] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software units in a processor for execution. The software unit can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor executes the instructions in the memory, and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

[0373] An embodiment of the present application provides a method for determining the number of PUCCH repetitions for the PUCCH reply of Msg4.

[0374] Embodiment 1: configure a new PUCCH resource table, obtain the coverage enhancement feature supported by the UE through Msg1 or Msg3, use a new table that carries the number of repetitions; further, in order to avoid conflicts between repeated PUCCH resources and legacy PUCCH resources, a new offset value may be configured.

[0375] Embodiment 2: The number of repetitions of PUCCH is determined according to the number of repetitions of Msg3; for example, the number of repetitions of PUCCH is the same as the number of repetitions of Msg3, or the number of repetitions of Msg3 / 2.

[0376] Embodiment three: Obtain the coverage enhancement feature supported by the UE through Msg1 or Msg3, adopt the scheduling PDSCH of the new DCI (carrying the number of repetitions), and indicate the number of retransmissions; specifically, the number of retransmissions is calculated according to a preset method, such as 2^n or the specific value of the field; or, adopt a new DCI detection, without detecting the previous DCI format, thus eliminating the need for blind detection.

[0377] Embodiment 4: reducing the MCS to provide redundant space and indicate the number of repetitions; one possibility is to provide redundant space, and the other possibility is to provide redundant bits, both of which can be used to indicate the number of repetitions.

[0378] Embodiment 1: Configuring a new PUCCH resource table

[0379] Core idea: configure a new PUCCH table that carries the number of PUCCH repetitions or the number of symbols after repetition.

[0380] Step 1: Optionally, the UE informs the gNB that it supports / needs the coverage enhancement feature through Msg1 or Msg3, and the notification methods are as follows. For example: preamble resource grouping (i.e., UEs that support / need coverage enhancement access on a group of preamble resources, and UEs that do not support / need coverage enhancement access on another group of preamble resources), Msg3 DMRS configuration format / uplink control information carried on Msg3, Msg3 repetition transmission times, etc.

[0381] Step 2: After the gNB has been informed to indicate coverage enhancement, when indicating the PUCCH reply Msg4, the method of indicating the number of repetitions can be further divided into the following two methods:

[0382] Method 1: Reuse the existing table and add the number of repetitions N to indicate the coverage enhancement UE in the SIB information; for UEs that need coverage enhancement, such as UEs that transmit Msg3 repeatedly at least 2 times, use the number of repetitions N to transmit PUCCH; for UEs that support coverage enhancement and have no repetition of Msg3, do not repeat PUCCH transmission, thereby saving resources.

[0383] Method 2: When the gNB sends the DCI scheduling Msg4, the corresponding PUCCH resource table is a new table; one possibility is to indicate a pucch-ResourceCommon2 for the CE UE alone, and configure the table corresponding to the parameter, such as Table 5 (indicating the number of repetitions) and Table 6 (indicating the number of symbols after repetition); another possibility is to reuse the other parameters of the original pucch-ResourceCommon, and only configure a column of repetitions at the end of the original table. In the CE scenario, the number of repetitions of PUCCH is obtained according to the configured column of repetitions. When used specifically, PUCCH can be transmitted repeatedly only for UEs that need coverage enhancement (UEs that repeat Msg3).

[0384] Furthermore, since part of the content of the original table is reused, in order to reduce the conflict between the PUCCH repetition scenario and the resources used by the original UE, the resources used for transmission can be further differentiated: for method 1, the initial transmission resources remain unchanged, and the retransmission resources increase the offset bias, which can be configured in the SIB information, so that the retransmission and the PUCCH initial transmission of other UEs are staggered; for method 2, the offset bias can be configured in the table so that the resources for repeated transmission are different from the PUCCH initial transmission of other UEs.

[0385] Technical effects of embodiment 1:

[0386] The solution proposed in the embodiment of the present application provides a method for determining the number of PUCCH repetitions for replying Msg4.

[0387] The improvements of the first embodiment compared with the prior art are as follows:

[0388] The solution proposed in the embodiment of the present application provides a method for determining the number of PUCCH repetitions, that is, indicating the number of repetitions or the number of symbols after repetition in a system message.

[0389] Embodiment 2: The number of repetitions of PUCCH is determined according to the number of repetitions of Msg3

[0390] Core idea: If Msg3 has been repeatedly transmitted, there is a high possibility that the PUCCH of Msg4 needs to be enhanced, so the number of PUCCH repetitions of Msg4 can be determined based on the number of repetitions of Msg3 or whether it is repeated.

[0391] The number of PUCCH repetitions in reply to Msg4 is determined according to the number of repetitions of Msg3. If Msg3 has been repeatedly transmitted, it means that the base station already knows that the UE supports coverage enhancement. Therefore, the number of repetitions can be implicitly obtained by the base station and the UE respectively through the following methods. There may be multiple specific determination methods as follows.

[0392] Method 1: Number of repetitions = the same number of repetitions of Msg3; it can be seen that if Msg3 is transmitted only once, the PUCCH is also transmitted only once, which is compatible with the existing technology; if Msg3 is repeated 2 or 4 times, the PUCCH is also repeated 2 or 4 times.

[0393] Method 2: Optional n=2.

[0394] Method 3: Number of repetitions = number of Msg3 repetitions – k, where k is a preconfigured value and optional k=2.

[0395] The number of repetitions of Msg3 in the above methods 1 to 3 can be replaced by "the number of retransmission repetitions of Msg3" or "the total number of Msg3 transmissions (ie, the sum of the number of first transmission repetitions and the number of retransmissions)".

[0396] In addition to determining the number of repetitions of retransmission, the frequency domain resources, code domain resources, etc. used for repeated transmission are in the same position as the frequency domain and code domain resources of the initial transmission; in order to avoid conflict with the PUCCH resources of the prior art, a PRB offset is added to the frequency domain resources used for repetition.

[0397] The technical effect of the second embodiment:

[0398] The solution proposed in the embodiment of the present application provides a method for determining the number of PUCCH repetitions for replying Msg4.

[0399] The improvements of the second embodiment compared with the prior art / other embodiments are as follows:

[0400] The number of repetitions of PUCCH is determined by the number of repetitions of Msg3, and the number is implicitly determined, thereby avoiding additional configuration signaling or dynamic signaling and reducing overhead.

[0401] Embodiment 3: Acquire the coverage enhancement feature supported by the UE through Msg1 or Msg3, adopt the new type of DCI (carrying the number of repetitions) to schedule PDSCH, and indicate the number of retransmissions.

[0402] Core idea: Since there is no RRC configuration, the number of repetitions is determined only by the field carried by the DCI.

[0403] Step 1: Optionally, the UE informs the gNB that it supports / needs the coverage enhancement feature through Msg1 or Msg3, and the notification method is as follows. For example: preamble resource grouping (i.e., UEs that support / need coverage enhancement access on a group of preamble resources, and UEs that do not support / need coverage enhancement access on another group of preamble resources), Msg3 DMRS configuration format / uplink control information carried on Msg3, the number of Msg3 repetition transmissions, etc. (same as Step 1 of Embodiment 1).

[0404] Step 2: The base station indicates the number of PUCCH repetitions through the information DCI and adds a new field; since there is no RRC configuration information, the number of repetitions needs to be obtained directly from the value x of the new field.

[0405] For example, the number of repetitions = 2^x; that is, when x = 3, the number of repetitions is 2^3 = 8 times.

[0406] For example, the number of repetitions = 2 + x, where "2" is just a preconfigured value; that is, x = 3, and the number of repetitions is 5 times.

[0407] Step 3: The UE transmits the PUCCH according to the indicated number of repetitions; the resources (frequency domain resources, code domain resources) used for repeated transmission are the same as those for initial transmission; in order to avoid conflict with the PUCCH resources of the prior art, a PRB offset is added to the frequency domain resources used for repeated transmission.

[0408] The difference from the Option 2 currently under discussion: In the current Option 2 discussion, an array of values ​​for the number of repetitions is configured through RRC, and the value of the new field is determined from the array. However, since the PUCCH of Msg4 has no RRC configuration information, it can only directly obtain the number of repetitions.

[0409] The technical effect of the third embodiment is as follows:

[0410] The solution proposed in the embodiment of the present application provides a method for determining the number of PUCCH repetitions for replying Msg4.

[0411] The improvements of the third embodiment compared with the prior art / other embodiments are as follows:

[0412] The number of repetitions is determined directly through the field of the DCI.

[0413] Embodiment 4: Reducing MCS to provide redundant space and indicating the number of repetitions

[0414] Core idea: For UEs that need coverage improvement, the original MCS high-rate part is no longer applicable, thereby reducing the MCS table to provide redundant space and carry the number of repetitions.

[0415] Step 1: Define the MCS table for the CE scenario, and indicate the use of PUCCH resources when DCI schedules Msg4;

[0416] One possibility is to provide redundant space as shown in Table 2, that is, to add a new row of PUCCH repetition, and each row of MCS index indication carries the number of repetitions; another possibility is to reduce the number of MCS rows to provide redundant bits, as shown in Table 4 and Table 4, the original 32 rows are reduced to 16 rows or 8 rows, so that the original 5-bit MCS indication only occupies 4 bits or 3 bits for MCS indication, and the saved 1 bit or 2 bits can be used to indicate the number of repetitions.

[0417] Step 2: The newly defined MCS table is used only when coverage enhancement is required or by UEs that support coverage enhancement. Otherwise, the MCS indication information is interpreted according to the prior art.

[0418] For example, when Msg3 is transmitted repeatedly, the UE requires coverage enhancement / and supports coverage enhancement, and refers to the new MCS table for interpretation.

[0419] For example, the UE informs the gNB that it supports the coverage enhancement feature through Msg1 or Msg3, and the UE can also use the new MCS table.

[0420] The technical effect of the fourth embodiment is as follows:

[0421] The solution proposed in the embodiment of the present application provides a method for determining the number of PUCCH repetitions for replying Msg4.

[0422] The improvements of the fourth embodiment compared with the prior art / other embodiments are as follows:

[0423] A method for dynamically indicating the number of PUCCH repetitions is achieved by reducing the MCS table to provide space to indicate the number of repetitions.

[0424] It should be noted that, in the implementation of this application, "protocol" may refer to a standard protocol in the communication field.

[0425] It should also be noted that in the embodiments of the present application, "pre-defined" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a site and an access point), and the present application does not limit its specific implementation method. For example, pre-defined can refer to what is defined in the protocol.

[0426] It should also be noted that "at least one" means one or more; "at least one of A and B" is similar to "A and / or B", describing the association relationship of associated objects, indicating that three relationships may exist. For example, at least one of A and B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0427] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0428] 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.

[0429] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0430] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0431] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0432] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0433] 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 communication method, characterized in that: include: Receive a first message, where the first message is a fourth message Msg4 of the random access process; In the case where the device is not configured with a dedicated physical uplink control channel PUCCH, the first PUCCH is repeatedly transmitted using a repetition number N, wherein the dedicated PUCCH is configured to the device through high-layer signaling, and N is an integer greater than 1; wherein, The first PUCCH is used to carry feedback information, where the feedback information indicates whether the device successfully receives the first message.

2. The method according to claim 1, characterized in that The downlink control information DCI of the Msg4 includes first indication information, and the first indication information indicates the number of repetitions N.

3. The method according to claim 2, characterized in that The first indication information is carried in a field of the DCI.

4. The method according to claim 1, characterized in that: Before receiving the first message, the method further includes: A system message is received, where the system message includes first indication information, where the first indication information indicates the number of repetitions N.

5. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: First information is sent, wherein the first information indicates that the device has a capability of supporting coverage enhancement.

6. The method according to any one of claims 1 to 5, characterized in that: The device is a user equipment UE.

7. The method according to any one of claims 1 to 5, characterized in that: The device is a chip in a user equipment UE.

8. The method according to any one of claims 1 to 7, characterized in that: In the N repeated transmissions of the first PUCCH, resources occupied by the N-1 transmission of the first PUCCH are offset by m1 frequency domain units relative to resources occupied by the first transmission, the N-1 transmission is a transmission after the first transmission, and m1 is a positive integer greater than 0; or, The resources occupied by the N repeated transmissions of the first PUCCH are offset by m2 frequency domain units relative to the reference frequency domain unit, where m2 is a positive integer greater than 0.

9. A communication method, characterized in that: include: Sending a first message, where the first message is a fourth message Msg4 of the random access process; In the case where the terminal device is not configured with a dedicated physical uplink control channel PUCCH, the first PUCCH is repeatedly received using a repetition number N, where the dedicated PUCCH is configured to the terminal device through high-layer signaling, and N is an integer greater than 1; wherein, The first PUCCH is used to carry feedback information, and the feedback information is used to indicate whether the terminal device successfully receives the first message.

10. The method according to claim 9, characterized in that The downlink control information DCI of the Msg4 includes first indication information, and the first indication information indicates the number of repetitions N.

11. The method according to claim 10, characterized in that The first indication information is carried in a field of the DCI.

12. The method according to claim 9, characterized in that Before sending the first message, the method further includes: Send a system message, where the system message includes first indication information, and the first indication information indicates the number of repetitions N.

13. The method according to any one of claims 9 to 12, characterized in that: The method further comprises: First information is received, where the first information indicates that the terminal device has a capability of supporting coverage enhancement.

14. The method according to any one of claims 9 to 13, characterized in that: The device is a network device.

15. The method according to any one of claims 9 to 13, characterized in that: The device is a chip in a network device.

16. The method according to any one of claims 9 to 15, characterized in that: In the N repeated transmissions of the first PUCCH, the resources occupied by the N-1 transmissions of the first PUCCH are Relative to the resource occupied by the first transmission, the resource is offset by m1 frequency domain units, the N-1 transmission is the transmission after the first transmission, and m1 is a positive integer greater than 0; or, The resources occupied by the N repeated transmissions of the first PUCCH are offset by m2 frequency domain units relative to the reference frequency domain unit, where m2 is a positive integer greater than 0.

17. A device, characterized in that: include: A module for executing the method according to any one of claims 1 to 8.

18. A device, characterized in that: include: A module for executing the method according to any one of claims 9 to 16.

19. A device, characterized in that: include: processor; a memory coupled to the processor, the memory storing computer instructions; When the computer instructions are executed by the processor, the method according to any one of claims 1 to 8 is executed or implemented.

20. A device, characterized in that: include: processor; a memory coupled to the processor, the memory storing computer instructions; When the computer instructions are executed by the processor, the method according to any one of claims 9 to 16 is executed or implemented.

21. A computer-readable storage medium, characterized in that: The computer-readable storage medium is included in a device, and the computer-readable storage medium stores computer instructions. When the computer instructions are executed, the method according to any one of claims 1 to 8 is executed or implemented.

22. A computer-readable storage medium, characterized in that: The computer-readable storage medium is included in a device, and the computer-readable storage medium stores computer instructions. When the computer instructions are executed, the method according to any one of claims 9 to 16 is executed or implemented.

23. A computer program product, characterized in that When the computer program product is run by a device, the method according to any one of claims 1 to 8 is executed or implemented.

24. A computer program product, characterized in that When the computer program product is run by a device, the method according to any one of claims 9 to 16 is executed or implemented.

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