An uplink coverage enhancement method, device and storage medium

Abstract

The present disclosure relates to an uplink coverage enhancement method, apparatus, and storage medium. The uplink coverage enhancement method is applied to a terminal, and the method includes: sending retransmission indication information to a network device, where the retransmission indication information is used to indicate that the terminal retransmits uplink control information on a common physical uplink control channel resource; determining, based on a retransmission indication sent by the network device, the number of times of sending the uplink control information on the common physical uplink control channel resource, and sending the uplink control information on the common physical uplink control channel resource according to the determined number of times. By means of the present disclosure, the uplink control information can be sent according to the determined number of times on the common physical uplink control channel resource, thereby enhancing the coverage of the common physical uplink control channel.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular, to an uplink coverage enhancement method, apparatus, and storage medium. Background Art

[0002] With the development of communication technologies, the Non-Terrestrial Networks (NTN) technology has been introduced.

[0003] In NTN, due to the long distance between the satellite / aerial device and the ground user equipment (UE), the path loss of information transmission is large, resulting in limited coverage of some channels. It is necessary to enhance the uplink control information. For example, enhance the hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the uplink control information transmitted on the common physical uplink control channel resource, such as Message 4 (Msg4), to meet the coverage requirements of the channel. Summary of the Invention

[0004] To overcome the problems in the related art, the present disclosure provides an uplink coverage enhancement method, apparatus, and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, an uplink coverage enhancement method is provided, which is applied to a terminal and includes:

[0006] Sending retransmission indication information to a network device, where the retransmission indication information is used to indicate that the terminal retransmits uplink control information on a common physical uplink control channel resource;

[0007] Based on the retransmission indication sent by the network device, determining the number of times of sending the uplink control information on the common physical uplink control channel resource, and

[0008] Sending the uplink control information on the common physical uplink control channel resource according to the determined number of times.

[0009] In an implementation manner, the retransmission indication information includes at least one of the following:

[0010] Retransmission capability, which is used to indicate the ability of the terminal to support retransmission of uplink control information on the common physical uplink control channel resource;

[0011] Retransmission request, which is used to indicate that the terminal needs to retransmit uplink control information.

[0012] In an implementation manner, the retransmission indication information is indicated based on a physical random access channel resource set;

[0013] Among them, there is a corresponding relationship between the physical random access channel resource set and the retransmission of the uplink control information; or,

[0014] There is a corresponding relationship between the physical random access channel resource set and the number of retransmissions of the uplink control information.

[0015] In one implementation, the retransmission indication information is indicated based on Message 3, and the Message 3 includes an information field for indicating the retransmission indication information;

[0016] Among them, the information field includes a single bit;

[0017] The single bit is used to indicate the retransmission indication information and / or the retransmission count value in the single retransmission count group; or,

[0018] The information field includes multiple bits;

[0019] The multiple bits are used to indicate a first retransmission count, and the first retransmission count is the retransmission count reported by the terminal to the network device;

[0020] Among them, in response to the retransmission indication information including a retransmission capability, the first retransmission count is the retransmission count supported by the terminal;

[0021] In response to the retransmission indication information including a retransmission request, the first retransmission count is the retransmission count recommended by the terminal.

[0022] In one implementation, the retransmission indication includes a first signaling and / or a second signaling;

[0023] In response to the first signaling being configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a single retransmission count value. Based on the first signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count of the terminal retransmitting the uplink control information on the common physical uplink control channel resource;

[0024] In response to the first signaling being configured with retransmission count information, the retransmission count information includes a disabled retransmission count and / or an invalid retransmission count. Based on the first signaling, it is determined that the number of times of transmitting the uplink control information on the common physical uplink control channel resource is a single transmission;

[0025] In response to the first signaling being configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or an effective retransmission count, and the enabled retransmission count and / or the effective retransmission count are multiple retransmission count values. Based on the first signaling and the second signaling, a second retransmission count is determined, where the second retransmission count is the number of retransmissions for the terminal to retransmit the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among multiple retransmission counts, or the second signaling is used to indicate a retransmission count.

[0026] In response to the first signaling not being configured with retransmission count information, based on the second signaling, a second retransmission count is determined, where the second retransmission count is the number of retransmissions for the terminal to retransmit the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among multiple retransmission counts, or the second signaling is used to indicate a retransmission count.

[0027] In one embodiment, the second signaling includes at least one of the following information fields:

[0028] A first information field, where the bit value of the first information field is used to represent an index of one retransmission count among the multiple retransmission counts configured by the first signaling;

[0029] A second information field, where the bit value of the second information field is used to represent an index of a predefined retransmission count;

[0030] A third information field, where the third information field is used to represent a retransmission count.

[0031] In one embodiment, the second signaling includes the downlink control signaling DCI of the network device scheduling message 4, or the second signaling includes the multi-access channel control element MAC CE in the physical downlink control channel PDSCH carrying message 4.

[0032] In one embodiment, in response to the second signaling including the downlink control signaling DCI of the network device scheduling message 4, at least one information field included in the second signaling is the information field corresponding to the highest significant X bits in the modulation and coding strategy MCS field, where X is a positive integer.

[0033] In one embodiment, the first signaling is a radio resource control RRC signaling.

[0034] In one embodiment, before sending the retransmission indication information to the network device, the method further includes:

[0035] Determining that the received power of the downlink signal reference signal measured by the terminal is lower than the downlink signal reference signal reception power threshold.

[0036] In one embodiment, it is determined that the condition for single - transmission of uplink control information is met, and it is determined that the number of transmissions of the uplink control information on the common physical uplink control channel resource is a single transmission;

[0037] The condition for single - transmission of uplink control information includes at least one of the following:

[0038] The terminal does not support re - transmission of uplink control information;

[0039] The terminal does not send the re - transmission indication information based on the physical random access channel resource set and / or Message 3 request;

[0040] Receiving indication information sent by the network device for indicating single - transmission.

[0041] In one embodiment, the uplink control information includes a hybrid automatic repeat request acknowledgement Msg4 HARQ - ACK message of Message 4.

[0042] According to the second aspect of the embodiments of the present disclosure, an uplink coverage enhancement method applied to a network device is provided, including:

[0043] Receiving re - transmission indication information sent by a terminal, where the re - transmission indication information is used to indicate that the terminal re - transmits uplink control information on a common physical uplink control channel resource;

[0044] Sending a re - transmission indication to the terminal, where the re - transmission indication is used to indicate that the terminal determines the number of times the terminal transmits the uplink control information on the common physical uplink control channel resource, and

[0045] Receiving the uplink control information sent by the terminal on the common physical uplink control channel resource according to the determined number of times.

[0046] In one embodiment, the re - transmission indication information includes at least one of the following:

[0047] Re - transmission capability, which is used to indicate the ability of the terminal to support re - transmission of uplink control information on the common physical uplink control channel resource;

[0048] Re - transmission request, which is used to indicate that the terminal needs to re - transmit uplink control information.

[0049] In one embodiment, the re - transmission indication information is indicated based on a physical random access channel resource set;

[0050] Wherein, there is a corresponding relationship between the physical random access channel resource set and the re - transmission of uplink control information; or,

[0051] There is a corresponding relationship between the set of physical random access channel resources and the number of retransmissions of the uplink control information.

[0052] In one embodiment, the retransmission indication information is indicated based on Message 3, and the Message 3 includes an information field for indicating the retransmission indication information;

[0053] Wherein, the information field includes a single bit; the single bit is used to indicate the retransmission indication information and / or the retransmission count value in the single retransmission count group; or,

[0054] The information field includes multiple bits; the multiple bits are used to indicate the first retransmission count, and the first retransmission count is the retransmission count reported by the terminal to the network device;

[0055] Wherein, the retransmission indication information includes retransmission capability, and the first retransmission count is the retransmission count supported by the terminal;

[0056] The retransmission indication information includes a retransmission request, and the first retransmission count is the retransmission count recommended by the terminal.

[0057] In one embodiment, the retransmission indication includes a first signaling and / or a second signaling;

[0058] The first signaling is configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a single retransmission count value. Based on the first signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count of the terminal retransmitting the uplink control information on the common physical uplink control channel resource;

[0059] The first signaling is configured with retransmission count information, the retransmission count information includes a disabled retransmission count and / or an invalid retransmission count. Based on the first signaling, the number of times of transmitting the uplink control information on the common physical uplink control channel resource is determined as a single transmission;

[0060] The first signaling is configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a plurality of retransmission count values. Based on the first signaling and the second signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count of the terminal retransmitting the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate the index of one retransmission count among the plurality of retransmission counts, or the second signaling is used to indicate one retransmission count;

[0061] The first signaling does not configure retransmission count information. Based on the second signaling, a second retransmission count is determined, where the second retransmission count is the number of times the terminal retransmits the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among multiple retransmission counts, or the second signaling is used to indicate a retransmission count.

[0062] In one embodiment, the second signaling includes at least one of the following information fields:

[0063] A first information field, where the bit value of the first information field is used to represent an index of one retransmission count among the multiple retransmission counts configured by the first signaling;

[0064] A second information field, where the bit value of the second information field is used to represent an index of a predefined retransmission count;

[0065] A third information field, where the third information field is used to represent a retransmission count.

[0066] In one embodiment, the second signaling includes the downlink control signaling DCI of the network device scheduling message 4, or the second signaling includes the MAC CE in the physical downlink control channel PDSCH carrying message 4.

[0067] In one embodiment, the second signaling includes the downlink control signaling DCI of the network device scheduling message 4, and at least one information field included in the second signaling is the information field corresponding to the highest significant X bits in the modulation and coding strategy MCS field, where X is a positive integer.

[0068] In one embodiment, the first signaling is radio resource control RRC signaling.

[0069] In one embodiment, before receiving the retransmission indication information sent by the terminal, the method further includes:

[0070] Determining that the received signal reference signal receiving power measured by the terminal is lower than a downlink signal reference signal receiving power threshold.

[0071] In one embodiment, determining that the condition for single - transmission of uplink control information is met, and determining that the number of times of transmitting the uplink control information on the common physical uplink control channel resource is single - transmission;

[0072] The condition for single - transmission of uplink control information includes at least one of the following:

[0073] The terminal does not support retransmission of uplink control information;

[0074] The terminal does not send the retransmission indication information based on the physical random access channel resource set and / or the message 3 request;

[0075] The network device sends indication information for indicating single transmission.

[0076] In one implementation, the uplink control information includes a hybrid automatic repeat request acknowledgment Msg4 HARQ-ACK message of message 4.

[0077] According to a third aspect of the embodiments of the present disclosure, there is provided an uplink coverage enhancement device applied to a terminal, including:

[0078] A sending unit, configured to send retransmission indication information to a network device, where the retransmission indication information is used to indicate that the terminal retransmits uplink control information on a common physical uplink control channel resource;

[0079] An indication unit, configured to determine the number of times of sending the uplink control information on the common physical uplink control channel resource based on the retransmission indication sent by the network device;

[0080] The indication unit is further configured to send the uplink control information on the common physical uplink control channel resource according to the determined number of times.

[0081] In one implementation, the retransmission indication information includes at least one of the following:

[0082] Retransmission capability, which is used to indicate the capability of the terminal to support retransmission of uplink control information on the common physical uplink control channel resource;

[0083] Retransmission request, which is used to indicate that the terminal needs to retransmit uplink control information.

[0084] In one implementation, the retransmission indication information is indicated based on a physical random access channel resource set;

[0085] Wherein, there is a corresponding relationship between the physical random access channel resource set and the retransmission of uplink control information; or,

[0086] There is a corresponding relationship between the physical random access channel resource set and the number of retransmissions of uplink control information.

[0087] In one implementation, the retransmission indication information is indicated based on message 3, and an information field for indicating the retransmission indication information is included in message 3;

[0088] Wherein, a single bit is included in the information field;

[0089] The single bit is used to indicate the retransmission indication information and / or the retransmission count value in the single retransmission count array; or,

[0090] The information field includes a plurality of bits;

[0091] The plurality of bits are used to indicate a first retransmission count, and the first retransmission count is the retransmission count reported by the terminal to the network device;

[0092] Wherein, in response to the retransmission indication information including retransmission capability, the first retransmission count is the retransmission count supported by the terminal;

[0093] In response to the retransmission indication information including a retransmission request, the first retransmission count is the retransmission count recommended by the terminal.

[0094] In one implementation, the retransmission indication includes a first signaling and / or a second signaling;

[0095] In response to the first signaling being configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a single retransmission count value. Based on the first signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count of the terminal for retransmitting the uplink control information on the common physical uplink control channel resource;

[0096] In response to the first signaling being configured with retransmission count information, the retransmission count information includes a disabled retransmission count and / or an invalid retransmission count. Based on the first signaling, it is determined that the number of times of transmitting the uplink control information on the common physical uplink control channel resource is a single transmission;

[0097] In response to the first signaling being configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a plurality of retransmission count values. Based on the first signaling and the second signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count of the terminal for retransmitting the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among the plurality of retransmission counts, or the second signaling is used to indicate a retransmission count;

[0098] In response to the first signaling not being configured with retransmission count information, based on the second signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count of the terminal for retransmitting the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among the plurality of retransmission counts, or the second signaling is used to indicate a retransmission count.

[0099] In one embodiment, the second signaling includes at least one of the following information fields:

[0100] A first information field, where the bit value of the first information field is used to represent an index of one of the multiple retransmission times configured by the first signaling;

[0101] A second information field, where the bit value of the second information field is used to represent an index of a predefined retransmission time;

[0102] A third information field, where the third information field is used to represent the retransmission time.

[0103] In one embodiment, the second signaling includes the downlink control signaling DCI of the network device scheduling message 4, or the second signaling includes the MAC CE in the physical downlink control channel PDSCH carrying message 4.

[0104] In one embodiment, in response to the second signaling including the downlink control signaling DCI of the network device scheduling message 4, at least one information field included in the second signaling is the information field corresponding to the highest significant X bits in the modulation and coding strategy MCS field, where X is a positive integer.

[0105] In one embodiment, the first signaling is radio resource control RRC signaling.

[0106] In one embodiment, before sending the retransmission indication information to the network device, the apparatus further includes:

[0107] A determination unit, configured to determine that the received power of the downlink signal reference signal measured by the terminal is lower than the downlink signal reference signal reception power threshold.

[0108] In one embodiment, it is determined that the condition for single - time transmission of the uplink control information is met, and it is determined that the number of times of transmitting the uplink control information on the common physical uplink control channel resource is single - time transmission;

[0109] The conditions for meeting single - time transmission of the uplink control information include at least one of the following:

[0110] The terminal does not support retransmission of the uplink control information;

[0111] The terminal has not requested to send the retransmission indication information based on the physical random access channel resource set and / or message 3;

[0112] An indication information for indicating single - time transmission sent by the network device is received.

[0113] In one embodiment, the uplink control information includes the hybrid automatic repeat request acknowledgment Msg4HARQ - ACK message of message 4.

[0114] According to a fourth aspect of the embodiments of the present disclosure, there is provided an uplink coverage enhancement apparatus, which is applied to a network device and includes:

[0115] a receiving unit, configured to receive retransmission indication information sent by a terminal, where the retransmission indication information is used to indicate that the terminal retransmits uplink control information on a common physical uplink control channel resource;

[0116] a control unit, configured to send a retransmission indication to the terminal, where the retransmission indication is used to indicate that the terminal determines the number of times the terminal sends the uplink control information on the common physical uplink control channel resource;

[0117] The control unit is further configured to receive the uplink control information sent by the terminal on the common physical uplink control channel resource according to the determined number of times.

[0118] In an implementation, the retransmission indication information includes at least one of the following:

[0119] a retransmission capability, which is used to indicate the capability of the terminal to support retransmission of uplink control information on the common physical uplink control channel resource;

[0120] a retransmission request, which is used to indicate that the terminal needs to retransmit uplink control information.

[0121] In an implementation, the retransmission indication information is indicated based on a physical random access channel resource set;

[0122] wherein, there is a corresponding relationship between the physical random access channel resource set and the retransmission of uplink control information; or,

[0123] there is a corresponding relationship between the physical random access channel resource set and the number of retransmissions of uplink control information.

[0124] In an implementation, the retransmission indication information is indicated based on Message 3, and an information field for indicating the retransmission indication information is included in Message 3;

[0125] wherein, a single bit is included in the information field;

[0126] The single bit is used to indicate the retransmission indication information and / or the retransmission count value in the single retransmission count group; or,

[0127] a plurality of bits are included in the information field;

[0128] The plurality of bits are used to indicate a first retransmission count, where the first retransmission count is the retransmission count reported by the network device received from the terminal;

[0129] Among them, the retransmission indication information includes retransmission capability, and the first retransmission count is the retransmission count supported by the terminal;

[0130] The retransmission indication information includes a retransmission request, and the first retransmission count is the retransmission count recommended by the terminal.

[0131] In one implementation, the retransmission indication includes a first signaling and / or a second signaling;

[0132] The first signaling is configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a single retransmission count value. Based on the first signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count for the terminal to retransmit the uplink control information on the common physical uplink control channel resource;

[0133] The first signaling is configured with retransmission count information, the retransmission count information includes a disabled retransmission count and / or an invalid retransmission count. Based on the first signaling, it is determined that the number of times to send the uplink control information on the common physical uplink control channel resource is a single transmission;

[0134] The first signaling is configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a plurality of retransmission count values. Based on the first signaling and the second signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count for the terminal to retransmit the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among the plurality of retransmission counts, or the second signaling is used to indicate a retransmission count;

[0135] The first signaling is not configured with retransmission count information. Based on the second signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count for the terminal to retransmit the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among the plurality of retransmission counts, or the second signaling is used to indicate a retransmission count.

[0136] In one implementation, the second signaling includes at least one of the following information fields:

[0137] A first information field, and the bit value of the first information field is used to represent an index of one retransmission count among the plurality of retransmission counts configured by the first signaling;

[0138] A second information field, and the bit value of the second information field is used to represent an index of a predefined retransmission count;

[0139] A third information field, which is used to indicate the number of retransmissions.

[0140] In one implementation, the second signaling includes the downlink control signaling DCI of the network device scheduling message 4, or the second signaling includes the MAC CE in the physical downlink control channel PDSCH carrying message 4.

[0141] In one implementation, the second signaling includes the downlink control signaling DCI of the network device scheduling message 4, and at least one information field included in the second signaling is the information field corresponding to the highest effective X bits in the modulation and coding strategy MCS field, where X is a positive integer.

[0142] In one implementation, the first signaling is radio resource control RRC signaling.

[0143] In one implementation, before receiving the retransmission indication information sent by the terminal, the apparatus further includes:

[0144] A determination unit, configured to determine that the received power of the downlink signal reference signal measured by the terminal is lower than the downlink signal reference signal reception power threshold.

[0145] In one implementation, it is determined that the condition for single transmission of the uplink control information is satisfied, and it is determined that the number of times of transmitting the uplink control information on the common physical uplink control channel resource is single transmission;

[0146] The conditions for satisfying single transmission of the uplink control information include at least one of the following:

[0147] The terminal does not support retransmission of the uplink control information;

[0148] The terminal does not request to send the retransmission indication information based on the physical random access channel resource set and / or message 3;

[0149] The network device sends indication information for indicating single transmission.

[0150] In one implementation, the uplink control information includes the hybrid automatic repeat request acknowledgment Msg4 HARQ-ACK message of message 4.

[0151] According to a fifth aspect of the embodiments of the present disclosure, there is provided an uplink coverage enhancement apparatus, including: a processor; a memory for storing processor-executable instructions; wherein, the processor is configured to: execute the method according to the first aspect or any one of the first aspects.

[0152] According to a sixth aspect of the embodiments of the present disclosure, there is provided an uplink coverage enhancement device, including: a processor; a memory for storing processor-executable instructions; wherein, the processor is configured to: execute the method according to the second aspect or any one of the second aspect.

[0153] According to a seventh aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, which, when the instructions stored in the storage medium are executed by a processor of a terminal, enables the terminal to execute the method according to the first aspect or any one of the first aspect.

[0154] According to an eighth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, which, when the instructions stored in the storage medium are executed by a processor of a network device, enables the network device to execute the method according to the second aspect or any one of the second aspect.

[0155] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: The terminal sends retransmission indication information to the network device to indicate that the terminal retransmits uplink control information on the public physical uplink control channel resource. According to the retransmission indication sent by the network device, determine the number of times of sending uplink control information on the public physical uplink control channel resource, and according to the determined number of times, send uplink control information on the public physical uplink control channel resource, so as to realize that the uplink control information can be sent according to the determined number of times on the public physical uplink control channel resource, and enhance the coverage of the public physical uplink control channel.

[0156] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0157] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure and, together with the specification, are used to explain the principles of the present disclosure.

[0158] Figure 1 is a schematic diagram of a wireless communication system shown according to an exemplary embodiment.

[0159] Figure 2 is a flowchart of an uplink coverage enhancement method shown according to an exemplary embodiment.

[0160] Figure 3 is a flowchart of an uplink coverage enhancement method shown according to an exemplary embodiment.

[0161] Figure 4 is a flowchart of an uplink coverage enhancement method shown according to an exemplary embodiment.

[0162] Figure 5It is a flowchart of an uplink coverage enhancement method shown according to an exemplary embodiment.

[0163] Figure 6 It is a flowchart of an uplink coverage enhancement method shown according to an exemplary embodiment.

[0164] Figure 7 It is a flowchart of another uplink coverage enhancement method shown according to an exemplary embodiment.

[0165] Figure 8 It is a block diagram of an uplink coverage enhancement device shown according to an exemplary embodiment.

[0166] Figure 9 It is a block diagram of an uplink coverage enhancement device shown according to an exemplary embodiment.

[0167] Figure 10 It is a block diagram of a device for uplink coverage enhancement shown according to an exemplary embodiment.

[0168] Figure 11 It is a block diagram of a device shown according to an exemplary embodiment. Detailed implementation manners

[0169] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all the implementation manners consistent with the present disclosure.

[0170] The access method provided by the embodiments of the present disclosure can be applied to Figure 1 the wireless communication system 100 shown in. Refer to Figure 1 shown, the wireless communication system 100 includes a network device 110 and a terminal 120. Information is sent and received between the network device 110 and the terminal 120 through wireless resources.

[0171] It can be understood that Figure 1 the wireless communication system 100 shown in is only for illustrative purposes. The wireless communication system 100 may further include other network devices, such as a core network device, a wireless relay device, and a wireless backhaul device, etc., which are not drawn in Figure 1 . The embodiments of the present disclosure do not limit the number of network devices and terminals included in the wireless communication system.

[0172] It can be further understood that the wireless communication system of the embodiments of the present disclosure is a network that provides wireless communication functions. The wireless communication system can adopt different communication technologies, not limited to the Long-Term Evolution (LTE) / LTE-Advanced (LTE-A) system, and can also be used in other communication networks, such as Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier FDMA (SC-FDMA), Carrier Sense Multiple Access with Collision Avoidance. According to factors such as the capacity, rate, and latency of different networks, the network can be divided into 2G (generation) networks, 3G networks, 4G networks, or future evolved networks, non-terrestrial networks (Non-Terrestrial Networks, NTN) such as 5G networks, and 5G networks can also be referred to as New Radio (NR). For the convenience of description, the wireless communication network is sometimes simply referred to as the network in the present disclosure.

[0173] Furthermore, the network device 110 involved in the present disclosure can also be referred to as a radio access network device. The radio access network device can be: a base station, an evolved node B (eNB), a home base station, an access point (AP) in a Wireless Fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc. It can also be a gNB in the NR system, or it can also be a component or part of the device that constitutes the base station. When it is a vehicle-to-everything (V2X) communication system, the network device can also be an in-vehicle device. It should be understood that in the embodiments of the present disclosure, the specific technologies and specific device forms adopted by the network device are not limited.

[0174] Furthermore, the terminal 120 involved in the present disclosure may also be referred to as a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc. It is a device that provides voice and / or data connectivity to users. For example, the terminal may be a handheld device with wireless connection capabilities, a vehicle-mounted device, etc. Currently, some examples of terminals are: smartphones, pocket personal computers (PPCs), palm computers, personal digital assistants (PDAs), laptop computers, tablet computers, wearable devices, or vehicle-mounted devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device may also be a vehicle-mounted device. It should be understood that the present disclosure embodiments do not limit the specific technologies and specific device forms adopted by the terminal.

[0175] Figure 1 In [description], the terminal 120 communicates with the network device 110. The process in which the terminal 120 sends data to the network device 110 may be referred to as uplink transmission. The process in which the network device 110 sends data to the terminal 120 may be referred to as downlink transmission. During the uplink transmission and downlink transmission processes between the terminal 120 and the network device 110, a hybrid automatic repeat request (HARQ) feedback technology is adopted to ensure the reliability of the transmission. For example, after the terminal 120 receives the physical downlink shared channel (PDSCH) of the downlink service data sent by the network device 110, it will feedback the corresponding acknowledgement (ACK) or non-acknowledgement (NACK) uplink feedback information of the PDSCH, so that the network device 110 can determine whether to re-schedule the downlink service data or schedule new downlink service data to the user terminal. The ACK and NACK uplink feedback information are collectively referred to as uplink feedback response information (HARQ-ACK).

[0176] In the related art, coverage enhancement is supported based on a retransmission mechanism. For example, in NTN, due to the long distance between the satellite / aerial device and the ground UE, the path loss is large, which may lead to limited coverage of some channels, and it is necessary to enhance the uplink control information. However, the related art does not enhance the coverage of the common physical uplink control channel (common PUCCH). Therefore, currently, the coverage requirements of the common physical uplink control channel cannot be met, and a solution for enhancing the coverage of the common physical uplink control channel needs to be provided.

[0177] Embodiments of the present disclosure provide a coverage enhancement method. In this method, a terminal sends retransmission indication information to a network device to indicate retransmission of uplink control information on common physical uplink control channel resources, and determines the number of times of sending uplink control information on the common physical uplink control channel resources, so that the terminal sends uplink control information on the common physical uplink control channel resources based on the determined number of times, thereby enhancing the coverage of the common physical uplink control channel.

[0178] In an implementation manner of the uplink coverage enhancement method provided by the embodiments of the present disclosure, the above uplink control information may be a Msg4 HARQ-ACK message, but is not limited thereto, and may also be other uplink control signaling applicable to other transmissions on common PUCCH resources.

[0179] Figure 2 It is a flowchart of an uplink coverage enhancement method shown according to an exemplary embodiment. As Figure 2 shown, the uplink coverage enhancement method is applied to a terminal and includes the following steps:

[0180] In step S101, retransmission indication information is sent to the network device, and the retransmission indication information is used to indicate that the terminal retransmits uplink control information on common physical uplink control channel resources.

[0181] In step S102, based on the retransmission indication sent by the network device, the number of times of sending uplink control information on the common physical uplink control channel resources is determined.

[0182] In step S103, according to the determined number of times, uplink control information is sent on the common physical uplink control channel resources.

[0183] In the uplink coverage enhancement method provided by the embodiments of the present disclosure, the terminal sends retransmission indication information to the network device to indicate that the terminal retransmits uplink control information on common physical uplink control channel resources. The terminal determines the number of times of sending uplink control information on the common physical uplink control channel resources according to the retransmission indication sent by the network device, and sends uplink control information on the common physical uplink control channel resources according to the determined number of times, so as to realize that uplink control information can be sent according to the determined number of times on the common physical uplink control channel resources, thereby enhancing the coverage of the common physical uplink control channel.

[0184] In an implementation manner of the uplink coverage enhancement method provided by the embodiments of the present disclosure, the terminal determines to send retransmission indication information to the network device when the condition for sending retransmission indication information to the network device is met.

[0185] In one implementation of the uplink coverage enhancement method provided by the embodiments of the present disclosure, the condition for sending a retransmission indication message to a network device is determined based on a downlink signal reference signal received power threshold.

[0186] In one implementation, the downlink signal reference signal received power threshold is determined by multiplexing the existing downlink signal reference signal received power of message 3.

[0187] In another implementation, a custom threshold is determined as the downlink signal reference signal received power threshold.

[0188] Among them, the condition for sending a retransmission indication message to a network device includes that the downlink signal reference signal received power measured by the terminal is lower than the downlink signal reference signal received power threshold. That is, before the terminal sends a retransmission indication message to the network device, it is determined that the downlink signal reference signal received power measured by the terminal is lower than the downlink signal reference signal received power threshold.

[0189] For the uplink coverage enhancement method provided by the embodiments of the present disclosure, the terminal sends a retransmission indication message to the network device, and the retransmission indication message includes at least one of a retransmission capability and a retransmission request. Among them, the retransmission capability is used to indicate the ability of the terminal to support the retransmission of uplink control information on the common physical uplink control channel resource. For example, this ability can be whether to support the retransmission of uplink control information on the common physical uplink control channel resource. That is, the retransmission capability is at least used to indicate the retransmission capability of the terminal on the common physical uplink control channel resource. The retransmission request is used to indicate that the terminal needs to retransmit uplink control information.

[0190] In one implementation of the uplink coverage enhancement method provided by the embodiments of the present disclosure, the retransmission indication message includes a retransmission capability.

[0191] In another implementation of the uplink coverage enhancement method provided by the embodiments of the present disclosure, the retransmission indication message includes a retransmission request.

[0192] In yet another implementation of the uplink coverage enhancement method provided by the embodiments of the present disclosure, the retransmission indication message includes a retransmission capability and a retransmission request.

[0193] Among them, for the uplink coverage enhancement method provided by the embodiments of the present disclosure, the retransmission request can be understood as indicating a hidden relationship, and the hidden relationship is: if the terminal sends a retransmission request to the network device, the network device defaults that the terminal has the retransmission capability on the PUCCH. That is, when the terminal sends a retransmission request to the network device, the network device defaults that only when the terminal has the PUCCH retransmission capability will it send the retransmission request to the network device.

[0194] In the uplink coverage enhancement method provided by an embodiment of the present disclosure, a terminal sends retransmission indication information to a network device, and the retransmission indication information includes at least one of a retransmission capability and a retransmission request. The network device, according to the retransmission indication information sent by the terminal, indicates the number of times for the terminal to send uplink control information on a common physical uplink control channel resource. The terminal determines the number of times to send the uplink control information according to the retransmission indication, and sends the uplink control information on the common physical uplink control channel resource according to the determined number of times.

[0195] In one implementation manner of the uplink coverage enhancement method provided by an embodiment of the present disclosure, the retransmission indication information is indicated based on a Physical Random Access Channel (PRACH) resource set, and the PRACH resource set includes at least one physical random access channel resource.

[0196] Among them, in one implementation manner of the uplink coverage enhancement method provided by an embodiment of the present disclosure, there is a corresponding relationship between the PRACH resource set and the retransmission of uplink control information.

[0197] Among them, the fact that there is a corresponding relationship between the PRACH resource set and the retransmission of uplink control information can be understood as that the PRACH resource set is used to implicitly indicate the retransmission of uplink control information.

[0198] In one implementation manner of the uplink coverage enhancement method provided by an embodiment of the present disclosure, there is a corresponding relationship between the PRACH resource set and the number of retransmissions of uplink control information.

[0199] Among them, the fact that there is a corresponding relationship between the PRACH resource set and the number of retransmissions of uplink control information can be understood as that the PRACH resource set is used to indicate the number of retransmissions.

[0200] In one implementation manner of the uplink coverage enhancement method provided by an embodiment of the present disclosure, the retransmission indication information is determined based on the PRACH resource set, and the PRACH resource set may include at least one of the following:

[0201] - A PRACH resource set dedicated to the retransmission indication information of uplink control information in a common control channel

[0202] For example, a PRACH resource set dedicated to the retransmission of Msg4 HARQ-ACK messages.

[0203] - A PRACH resource set used to indicate the retransmission indication information of uplink control information in a common control channel and other information.

[0204] For example, reuse the PRACH resource set for indicating the retransmission of the Msg3 message. That is, a part of the PRACH resource set for indicating the retransmission of the Msg3 message is used to indicate the retransmission of the Msg3 message, and the other part is used to indicate the retransmission of the Msg3 and the retransmission indication information involved in the present disclosure example, such as for indicating the retransmission of the Msg4 HARQ-ACK message.

[0205] For another example, the PRACH resource set includes the retransmission indication information for indicating the retransmission of the Msg3 and the retransmission indication information involved in the present disclosure example, such as for indicating the retransmission of the Msg4 HARQ-ACK message.

[0206] In another implementation manner of the uplink coverage enhancement method provided by the embodiments of the present disclosure, the retransmission indication information is indicated based on Msg3, where Msg3 includes an information field for indicating the retransmission indication information.

[0207] In one example, the information field in Msg3 for indicating the retransmission indication information includes a single bit.

[0208] The single bit is used to indicate the retransmission indication information and / or the first retransmission count value.

[0209] In another example, the information field in Msg3 for indicating the retransmission indication information includes multiple bits, and the multiple bits are used to indicate the retransmission indication information and / or the first retransmission count.

[0210] The first retransmission count is the retransmission count reported by the terminal to the network device. Among them, in response to the retransmission indication information including a retransmission request, the first retransmission count is the retransmission count recommended by the terminal. Among them, in response to the retransmission indication information including a retransmission capability, the first retransmission count is the maximum retransmission count that the terminal can support.

[0211] In one exemplary embodiment, the terminal sends a retransmission request through a single bit in the information field. The value 1 indicates that the terminal has a retransmission request, and the value 0 indicates that the terminal has no retransmission request. When the terminal performs retransmission indication through Msg3, if the single bit is 1, it indicates that the terminal requests a retransmission request. If the single bit is 0, it means that the terminal has no retransmission request, and the specific retransmission count is determined by the network device.

[0212] In one exemplary embodiment, the terminal sends a retransmission capability through a single bit in the information field. The value 1 indicates that the terminal has a retransmission capability, and the value 0 indicates that the terminal does not have a retransmission capability. When the terminal performs retransmission indication through Msg3, if the single bit is 1, it indicates that the terminal has a retransmission capability, and the specific retransmission count is determined by the network device.

[0213] In an exemplary embodiment, the terminal sends a retransmission request and the number of retransmissions through a single bit in the information field. The value 1 indicates that the terminal has a retransmission request, and the first retransmission number is determined to be 4 in a predefined manner. The value 0 indicates that the terminal has no retransmission request.

[0214] In an exemplary embodiment, the terminal sends the retransmission capability and the number of retransmissions through a single bit in the information field. The value 1 indicates that the terminal has the retransmission capability, and the first retransmission number is determined to be 4 in a predefined manner. The value 0 indicates that the terminal has no retransmission capability.

[0215] In an exemplary embodiment, multiple bits are used to indicate the retransmission indication information and / or the first retransmission number. In an exemplary embodiment, the retransmission request is indicated by Msg3, and the specific indication method and the correspondence relationship of the information field indicating the retransmission information are as follows.

[0216] - The information field is a single bit: The number of retransmission requests is determined by the network device, and the terminal determines the number of retransmission requests based on the indication of the network device.

[0217] - The information field is multiple bits: The first retransmission number is included in the multiple bits, and the terminal determines whether it can retransmit based on the first retransmission number according to the indication of the network device.

[0218] - The information field is multiple bits: The first retransmission number is included in the multiple bits, the network device determines the retransmission number based on the retransmission indication sent by the terminal, and instructs the terminal to retransmit based on the determined retransmission number.

[0219] In an exemplary embodiment, multiple bits are used to indicate the first retransmission number, and the first retransmission number is the number of retransmissions reported by the terminal to the network device. Among them, in response to the retransmission indication information including the retransmission capability, the first retransmission number is the number of retransmissions supported by the terminal. The number of retransmissions supported by the terminal includes the maximum number of retransmissions supported by the terminal. The network device receives the maximum number of retransmissions supported by the terminal and determines the retransmission indication using a value not greater than the maximum number of retransmissions.

[0220] In an exemplary embodiment, the retransmission capability is indicated by Msg3, and the specific indication method and the correspondence relationship of the information field indicating the retransmission information are as follows:

[0221] - The information field is a single bit: The terminal has the ability to perform retransmission information, and the specific number of retransmissions is determined by the network device.

[0222] - The information field is multiple bits: The first retransmission number is included in the multiple bits, and the specific number of retransmissions is determined by the network device.

[0223] In the embodiments of the present disclosure, the information field of Msg3 may also indicate at least one of the following:

[0224] - Whether it supports the binding of Demodulation Reference Signal (DMRS)

[0225] - Inter-slot frequency hopping

[0226] In the embodiments of the present disclosure, the terminal sends a retransmission request and / or retransmission capability to the network device, and the network device may send a retransmission indication to the terminal based on the received retransmission request and / or retransmission capability.

[0227] In an exemplary embodiment, the terminal indicates a retransmission request through Msg3, and sends multiple bits to the network device. The multiple bits include a first retransmission count, and the first retransmission count is the retransmission count determined by the terminal. Based on the retransmission count, the network device sends a first indication message to the terminal. For example, the first indication message is yes or no, and the terminal determines whether it can perform retransmission of the uplink control instruction. In response to the first indication message being no, the terminal determines that the number of times of sending uplink control information on the common physical uplink control channel resource is a single transmission, and the uplink coverage enhancement method provided in the embodiments of the present disclosure is a method for explicitly indicating single transmission.

[0228] In another exemplary embodiment, in the uplink coverage enhancement method provided in the embodiments of the present disclosure, the terminal determines retransmission count information based on the retransmission indication sent by the network device.

[0229] Among them, the retransmission count information may be single transmission or multiple transmissions. The multiple transmissions can be understood as the retransmission count, and is hereinafter referred to as the second retransmission count for convenience of description. Among them, if the indication is single transmission, the uplink coverage enhancement method provided in this embodiment is a method for explicitly indicating single transmission.

[0230] In one implementation, the second retransmission count is determined based on the retransmission indication sent by the network device, and the second retransmission count is the number of times the terminal retransmits the uplink control information.

[0231] In one implementation, it is determined based on the retransmission indication sent by the network device that the number of times of sending uplink control information on the common physical uplink control channel resource is a single transmission.

[0232] In one implementation, the retransmission indication sent by the network device to the terminal includes a first signaling and / or a second signaling. The terminal determines the retransmission count information for transmitting the uplink control information on the common physical uplink control channel resource according to the first signaling and / or the second signaling, and transmits the uplink control information on the common physical uplink control channel resource according to the determined retransmission count information. It should be noted that when the terminal indicates to the network device that it does not support / does not request the uplink control information retransmission indication on the common resource through the PRACH and / or Msg3, or the terminal does not perform such uplink indication to the network device, the terminal transmits the uplink control information once, that is, the first retransmission count and / or the second retransmission count is 1. The uplink coverage enhancement method provided in this embodiment is a method for implicitly indicating single transmission.

[0233] Wherein, the first signaling may be an RRC signaling, and the second signaling is DCI or a Media Access Control Control Element (MAC CE).

[0234] Figure 3 It is a flowchart of an uplink coverage enhancement method shown according to an exemplary embodiment. As Figure 3 shown, it includes the following steps:

[0235] In step S201, it is determined that the first signaling is configured with retransmission count information.

[0236] In step S202, based on the first signaling, the second retransmission count is determined.

[0237] Wherein, the retransmission count information includes an enabled retransmission count and / or an effective retransmission count, and the enabled retransmission count and / or the effective retransmission count is a single retransmission count value. The uplink coverage enhancement method provided in this embodiment is a method for implicitly indicating single transmission.

[0238] Wherein, the second retransmission count is the retransmission count for the terminal to retransmit the uplink control information on the common physical uplink control channel resource.

[0239] In the embodiments of the present disclosure, the first signaling sent by the network device to the terminal is configured with an enabled retransmission count and / or an effective retransmission count, which is a single retransmission count value. The terminal determines the second retransmission count according to the retransmission count value of the first signaling.

[0240] In one implementation, the network device indicates the retransmission enable and the effective retransmission count through the first signaling, such as an RRC signaling. The second retransmission count is the value of the effective count.

[0241] In this embodiment, the terminal determines the retransmission count according to the parameters configured by the first signaling, including at least one of the following:

[0242] - When the terminal indicates support / request for uplink control information retransmission indication to the network device via PRACH and / or Msg3, the second retransmission count is the value configured by the first signaling sent by the network device for the terminal to apply.

[0243] - When the terminal indicates non - support / request for uplink control information retransmission indication / no uplink control instruction to the network device via PRACH and / or Msg3, the terminal sends the uplink control information once, that is, the second retransmission count is 1.

[0244] In an exemplary embodiment, taking the RRC configuration parameter RRC configured repetition number = enabled and the retransmission counts being values in {1, 2, 4, 8} as an example, the retransmission count determined according to the parameter configured by the first signaling is any one of 1, 2, 4, 8 in the retransmission count group, and the terminal performs retransmission according to the enabled retransmission count value.

[0245] In one implementation, the network device indicates the effective retransmission count via the first signaling, such as the RRC signaling. The effective retransmission count is a single retransmission count value. The terminal determines the second retransmission count according to the parameter configured by the first signaling, including at least one of the following:

[0246] - When the terminal indicates support / request for uplink control information retransmission indication to the network device via PRACH and / or Msg3, the terminal performs uplink control information retransmission according to the second retransmission count.

[0247] - When the terminal indicates non - support / request for uplink control information retransmission indication / no uplink control instruction to the network device via PRACH and / or Msg3, the terminal sends the uplink control information once.

[0248] In an exemplary embodiment, taking the single retransmission count as a value in {1, 2, 4, 8} as an example, the retransmission count determined according to the parameter configured by the first signaling is any one of 1, 2, 4, 8 in the retransmission count group, and the terminal performs effective retransmission according to this effective retransmission count value.

[0249] Figure 4 It is a flowchart of an uplink coverage enhancement method shown according to an exemplary embodiment. As Figure 4 shown, it includes the following steps:

[0250] In step S301, it is determined that the first signaling configures retransmission count information.

[0251] In step S302, based on the first signaling, it is determined that the number of times of sending uplink control information on the common physical uplink control channel resource is a single transmission.

[0252] Among them, the retransmission times information includes the deactivated retransmission times and / or the invalid retransmission times. Among them, the deactivation and / or invalid retransmission times in the first signaling indicates that the network device notifies the terminal not to configure the retransmission times through the first signaling (i.e., the RRC signaling), and the terminal can configure the retransmission times through other uplink control methods. The uplink coverage enhancement method provided in this embodiment is a method for implicitly indicating single transmission.

[0253] In one exemplary embodiment, the RRC configuration parameter RRC configured repetitionnumber = disabled in the first signaling indicates the deactivation situation.

[0254] In one exemplary embodiment, taking the retransmission array as {-1, 2, 4, 8} and indicating that the retransmission times is -1 as an example, the terminal determines that the retransmission times is -1 according to the indication of the first signaling and determines it as the invalid retransmission times.

[0255] Figure 5 It is a flowchart of an uplink coverage enhancement method shown according to an exemplary embodiment. As Figure 5 shown, it includes the following steps:

[0256] In step S401, it is determined that the first signaling is configured with retransmission times information.

[0257] In step S402, based on the first signaling and the second signaling, the second retransmission times is determined.

[0258] Among them, the retransmission times information includes the enabled retransmission times and / or the valid retransmission times, and the enabled retransmission times and / or the valid retransmission times are multiple retransmission times values.

[0259] Among them, the second retransmission times is the retransmission times for the terminal to retransmit the uplink control information on the common physical uplink control channel resource, and the second signaling is used to indicate the index of one retransmission times among multiple retransmission times, or the second signaling is used to indicate one retransmission times.

[0260] In one implementation manner, the network device jointly indicates the second retransmission times through the first signaling and the second signaling. For example, the first signaling is the RRC signaling, and the second signaling is the DCI indication or the MAC CE.

[0261] In an exemplary embodiment, the first signaling is an RRC signaling, and the second signaling is a DCI. The information field configured in the RRC signaling, RRC configured repetition number = enabled, that is, the retransmission times configured by the RRC are enabled. The information field corresponding to the DCI indication is the information field of DCI format 1_0 scrambled by the TC-RNTI of Msg4. The network device makes an indication through the first signaling and the second signaling, and the terminal determines the second retransmission times according to the RRC signaling and the DCI signaling sent by the network device.

[0262] In one implementation, the RRC signaling indicates the enabled retransmission times and / or the effective retransmission times. If there are multiple values for the retransmission times, the network device selects one value from the retransmission times indicated by the RRC signaling and the information field through scheduling DCI (DCI format 1_0 by TC-RNTI) for indication. The terminal determines the second retransmission times according to the indication of the RRC signaling and the DCI.

[0263] Based on the above, the method for determining the second retransmission times in the embodiments of the present disclosure includes at least one of the following:

[0264] - The terminal indicates support / request for uplink control information message retransmission indication to the network through PRACH and / or Msg3, and the network device indicates the second retransmission times through the information field in DCI format 1_0 scrambled by the TC-RNTI of Msg4.

[0265] - The terminal indicates support / request for uplink control information retransmission indication to the network through PRACH and / or Msg3, and the network device makes an indication through the information field in the PDSCH carrying Msg4. For example, the second retransmission times are indicated through the information of the PDSCH (such as MAC CE).

[0266] In one implementation of the uplink coverage enhancement method provided by the embodiments of the present disclosure, the second signaling includes at least one of the following information fields:

[0267] - The first information field, and the bit value of the first information field is used to represent the index of the retransmission times configured by the first signaling;

[0268] - The second information field, and the bit value of the second information field is used to represent the index of the predefined retransmission times;

[0269] - The third information field, and the third information field is used to represent the retransmission times.

[0270] Among them, in the uplink coverage enhancement method provided by the embodiments of the present disclosure, the second signaling includes the DCI signaling of the network device scheduling message 4, or the second signaling includes the MAC CE in the PDSCH carrying the message 4.

[0271] In one implementation manner, in response to the second signaling including the DCI signaling of the network device scheduling message 4, the second signaling includes at least one information field, and the information field is the information field corresponding to the highest effective X bits (Most Significant Bit, MSB) in the Modulation and Coding Scheme (MCS) field. Wherein, X is a positive integer value.

[0272] In one exemplary embodiment, the X_bit of the MSB is used to select one value from multiple retransmission count values of the first signaling. Taking the 5 bits included in the MSB field as an example, the terminal determines the MCS field from the last 5 - X bits, that is, selects one or more bits corresponding information fields starting from the highest significant bit as the information field indicating the retransmission indication for indication. In the case where the MCS field is not required to represent the retransmission count, all bits are used to represent the MCS.

[0273] In one exemplary embodiment, in the case where the MCS field is not required to represent the retransmission count, all bits are used to represent the MCS. The cases where the MCS field is not required to represent the retransmission count include at least one of the following:

[0274] - The terminal does not have the retransmission capability

[0275] - The terminal does not report a retransmission request

[0276] - The retransmission count is directly indicated using the first signaling.

[0277] Figure 6 It is a flowchart of an uplink coverage enhancement method shown according to an exemplary embodiment. As Figure 6 shown, it includes the following steps:

[0278] In step S501, it is determined that the first signaling is not configured with retransmission count related information. The retransmission count related information may be retransmission enable and / or retransmission count information.

[0279] In step S502, based on the second signaling, the second retransmission count is determined.

[0280] Wherein, the second retransmission count is the retransmission count of the terminal for retransmitting the uplink control information on the common physical uplink control channel resource, and the second signaling is used to indicate the index of one retransmission count among multiple retransmission counts, or the second signaling is used to indicate one retransmission count.

[0281] Among them, the second signaling includes DCI signaling or MAC CE signaling.

[0282] In an implementation manner of the embodiment of the present disclosure, the retransmission count information is not configured in the first signaling of the network device, that is, the retransmission count is not included in the first signaling, and the terminal does not report the enabling information either.

[0283] In an implementation manner, the retransmission count is not included in the RRC signaling, and the network device indicates it through the information field in the DCI (DCI format 1_0 scrambled by TC-RNTI) of scheduling message 4 or the MAC CE signaling. The terminal determines the second retransmission count according to the DCI indication or the MAC CE signaling.

[0284] In an implementation manner, the RRC signaling indicates to disable the retransmission count and / or an invalid retransmission count, and the network device indicates it through the scheduling DCI (DCI format 1_0 scrambled by TC-RNTI), and the indicated second retransmission count is 1.

[0285] Based on the above, in an exemplary embodiment, the method for the terminal to determine the retransmission count includes at least one of the following:

[0286] - The terminal indicates support / request for the uplink control information message retransmission indication to the network setting through the PRACH and / or Msg3, and the network device indicates the second retransmission count through the information field in the DCI format 1_0 scrambled by TC-RNTI of scheduling Msg4.

[0287] - The terminal indicates support / request for the uplink control information retransmission indication to the network setting through the PRACH and / or Msg3, and the network device indicates it through the information field in the PDSCH carrying Msg4. For example, the second retransmission count is indicated through the information of the PDSCH (such as MAC CE).

[0288] In an implementation manner, the condition for satisfying the single transmission of the uplink control information is determined, and the uplink control information is transmitted once. Among them, the conditions for satisfying the single uplink control information include at least one of the following:

[0289] - The terminal does not support the retransmission of the uplink control information

[0290] - The terminal does not request the retransmission of the uplink control information based on the physical random access channel resource set and / or Msg3

[0291] - The indication information for indicating single transmission sent by the network device is received.

[0292] In an implementation manner of the uplink coverage enhancement method provided by the embodiment of the present disclosure, the second signaling includes at least one of the following information fields:

[0293] - The first information field, the bit value of the first information field is used to represent the index of the number of retransmissions of the first signaling configuration;

[0294] - The second information field, the bit value of the second information field is used to represent the index of the predefined number of retransmissions;

[0295] - The third information field, the third information field is used to represent the number of retransmissions.

[0296] Among them, in the uplink coverage enhancement method provided by the embodiments of the present disclosure, the second signaling includes the DCI signaling of the network device scheduling message 4, or the second signaling includes the MAC CE in the PDSCH carrying the message 4.

[0297] In one implementation manner, in response to the second signaling including the DCI signaling of the network device scheduling message 4, the second signaling includes at least one information field, and the information field is the information field corresponding to the highest effective X bits (Most Significant Bit, MSB) in the Modulation and Coding Scheme (MCS) field. Wherein, X is a positive integer value.

[0298] In an exemplary embodiment, the X_bit of the MSB is used to select one value from multiple values of the first signaling, and the terminal determines the MCS field from the last 5 - X bits. When the MCS field is not required to represent the number of retransmissions, all bits are used to represent the MCS.

[0299] In an exemplary embodiment, the situations where the MCS field is not required to represent the number of retransmissions include at least one of the following:

[0300] - The terminal does not have the retransmission capability;

[0301] - The terminal does not send a retransmission request;

[0302] - The number of retransmissions is directly indicated by the first signaling.

[0303] In the uplink coverage enhancement method provided by the embodiments of the present disclosure, the uplink control information is Msg4 HARQ-ACK. Msg4 HARQ-ACK retransmission is performed on the common physical uplink control channel resource to enhance the uplink coverage.

[0304] Based on the uplink coverage enhancement method provided by the embodiments of the present disclosure, the terminal sends retransmission indication information of Msg4 HARQ-ACK to the network device, and the retransmission indication information includes a retransmission request and / or a retransmission capability.

[0305] The retransmission capability is used to indicate the terminal's ability to support Msg4 HARQ-ACK retransmission on the public physical uplink control channel resources. The retransmission request is used to indicate that the terminal needs to perform Msg4 HARQ-ACK retransmission.

[0306] In one implementation, Rsrp-Thresholdmsg4 HARQ-ACK is defined. When the rsrp of the downlink signal measured by the terminal is lower than this threshold, a retransmission indication will be sent. Among them, this RSRP threshold can reuse the existing rsrp-ThresholdMsg3 or be a newly defined threshold.

[0307] In one implementation, the retransmission indication information of Msg4 HARQ-ACK is indicated based on the physical random access channel resource set PRACH set.

[0308] Among them, there is a corresponding relationship between the PRACH resource and the retransmission of the Msg4 HARQ-ACK message, and there is also a corresponding relationship between the PRACH set and the number of retransmissions of the message.

[0309] In the embodiments of the present disclosure, the corresponding relationship for indicating the retransmission indication information according to the PRACH resource is as follows:

[0310] - The PRACH resource set dedicated to the retransmission of the Msg4 HARQ-ACK message;

[0311] - The PRACH resource set for performing Msg3 message retransmission, Msg4 HARQ-ACK message retransmission, and other information.

[0312] In an exemplary embodiment, there is a PRACH resource set dedicated to the retransmission of the Msg4 HARQ-ACK message in the PRACH resources, which is independent of the existing PRACH resource set. The terminal performs retransmission according to the number of message retransmissions indicated by the PRACH set for Msg4HARQ-ACK.

[0313] In an exemplary embodiment, at least part of the PRACH resources in Msg3 are reused to indicate the number of message retransmissions of the Msg4 HARQ-ACK message. In this embodiment, the terminal supports Msg3 message retransmission and Msg4HARQ-ACK message retransmission. Among them, a specific number of message retransmissions corresponds to the PRACH resource set, that is, the Msg3 message retransmission number is reused.

[0314] In another embodiment, the retransmission indication information of Msg4 HARQ-ACK is based on the indication of Msg3, where Msg3 includes an information field for indicating the retransmission indication information. That is, the retransmission request and / or retransmission capability are indicated by the content in Msg3.

[0315] In one way, the retransmission request is indicated by the content in Msg3. It is represented by 1 bit for the request, but the specific parameters are determined by the network device, and the terminal determines the number of retransmissions according to the indication of the network device.

[0316] In another way, the retransmission request is indicated by the content in Msg3. It is represented by multiple bits, indicating the number of retransmissions suggested by the user. The number of retransmissions is determined by the terminal, and the terminal determines whether retransmission can be performed according to the indication (yes or no) of the network device.

[0317] In yet another way, the retransmission request is indicated by the content in Msg3. It is represented by multiple bits, indicating the number of retransmissions suggested by the user. The network device determines the number of retransmissions and indicates the number of retransmissions to the terminal.

[0318] In one way, the retransmission capability is indicated by the content in Msg3. It is represented by 1 bit for the request, indicating support for retransmission. The specific number of retransmissions is determined by the network device.

[0319] In another way, the retransmission capability is indicated by the content in Msg3. It is represented by multiple bits, indicating the maximum number of retransmissions that the terminal can support. The specific number of retransmissions is determined by the network device. Among them, the number of retransmissions determined by the network device does not exceed the maximum number of retransmissions supported by the terminal.

[0320] It can be understood that when the retransmission capability is indicated by the content in Msg3, in addition to the above capabilities, it can further indicate whether to support the binding of the Demodulation Reference Signal (DMRS) and / or inter-slot frequency hopping.

[0321] In an exemplary embodiment, the terminal sends a retransmission request through a single bit in the information field. The value 1 indicates that the terminal has a retransmission request, and the value 0 indicates that the terminal has no retransmission request. When the terminal performs retransmission indication through Msg3, if the single bit is 1, it indicates that the terminal requests retransmission. If the single bit is 0, it means that the terminal has no retransmission request, and the specific number of retransmissions is determined by the network device.

[0322] In an exemplary embodiment, the terminal sends its retransmission capability through a single bit in the information field. A value of 1 indicates that the terminal has the retransmission capability, and a value of 0 indicates that the terminal does not have the retransmission capability. When the terminal performs a retransmission indication through Msg3, if the single bit is 1, it indicates that the terminal has the retransmission capability, and the specific number of retransmissions is determined by the network device.

[0323] In an exemplary embodiment, the terminal sends a retransmission request and the number of retransmissions through a single bit in the information field. A value of 1 indicates that the terminal has a retransmission request, and the number of retransmissions is determined to be 4 through a predefined method. A value of 0 indicates that the terminal does not have the retransmission capability.

[0324] In an exemplary embodiment, the terminal sends its retransmission capability and the number of retransmissions through a single bit in the information field. A value of 1 indicates that the terminal has a retransmission request, and the number of retransmissions is determined to be 4 through a predefined method. A value of 0 indicates that the terminal does not have the retransmission capability.

[0325] In an exemplary embodiment, multiple bits are used to indicate retransmission indication information and / or the first number of retransmissions. The number of retransmissions supported by the terminal includes the maximum number of retransmissions supported by the terminal. The network device receives the maximum number of retransmissions supported by the terminal and determines the retransmission indication using a value not greater than the maximum number of retransmissions.

[0326] Based on the above examples, the terminal determines the number of retransmissions according to the uplink indication.

[0327] Among them, the terminal determines the number of retransmissions based on RRC signaling and / or DCI signaling, or the terminal determines the number of retransmissions based on RRC signaling and / or MAC CE signaling.

[0328] In an implementation manner of determining the number of retransmissions according to the uplink indication of the terminal, the network device indicates the retransmission enable number of retransmissions and / or the effective number of retransmissions through RRC signaling (such as common PUCCH configuration). This value is a determined value, such as one of a set of values {1, 2, 4, 8}. At this time, the cell-specific repetition number setting is used by default, and the terminal determines the number of retransmissions according to the parameters configured by RRC.

[0329] In an implementation manner where the number of retransmissions is indicated by RRC signaling for the retransmission enable number of retransmissions and / or the effective number of retransmissions, the terminal indicates support / request for Msg4 HARQ-ACK repeated transmission to the network device through the PRACH resource set and / or Msg3, and the terminal applies the value configured by the network device's RRC for Msg4 HARQ-ACK repeated transmission.

[0330] In an implementation where the retransmission count is indicated according to the RRC signaling for the retransmission-enabled retransmission count and / or the effective retransmission count, the terminal indicates to the network device the non-support / request for Msg4 HARQ-ACK repeated transmission or no uplink indication through the PRACH resource set and / or Msg3, and the terminal sends the uplink control information once. The uplink coverage enhancement method provided in this embodiment is a method for implicitly indicating single transmission.

[0331] In an implementation where the retransmission count is determined according to the uplink indication of the terminal, the network device indicates the retransmission-enabled (enable) retransmission count and / or the effective retransmission count through the RRC signaling (such as common PUCCH configuration), and this value is one or more values, such as some values {2, 4, 8} from {1, 2, 4, 8}.

[0332] In an implementation where the retransmission count is indicated according to the RRC signaling for the retransmission-enabled retransmission count and / or the effective retransmission count, when the terminal indicates to the network device the support / request for Msg4 HARQ-ACK repeated transmission through the PRACH resource set and / or Msg3, the network device selects one value from multiple values through a specific field in the DCI signaling (DCI 1-0 format by TC-RNTI) of scheduling message 4 for indication. At this time, the indication is carried out through the DCI instruction, and the terminal determines the retransmission count according to the indication of the network device's DCI instruction.

[0333] Among them, the retransmission count is directly indicated according to the bit value of the specific field;

[0334] Or the bit value of the specific field corresponds to the index of a group of predefined values for indication

[0335] At this time, the retransmission count is indicated through the DCI instruction, and the terminal determines the retransmission count according to the indication of the network device's DCI instruction.

[0336] In an implementation where the retransmission count is indicated according to the RRC signaling for the retransmission-enabled retransmission count and / or the effective retransmission count, when the terminal indicates to the network device the support / request for Msg4 HARQ-ACK repeated transmission through the PRACH resource set and / or Msg3, the network device selects one value from multiple values through the PDSCH carrying message 4 for indication. At this time, the indication is carried out through the information of the PDSCH (such as MAC CE), and the terminal determines the retransmission count according to the indication of the network device's MAC CE.

[0337] In an implementation manner where the retransmission count is based on the RRC signaling to indicate the retransmission enable retransmission count and / or the effective retransmission count, when the terminal indicates to the network device through the PRACH resource set and / or Msg3 that it does not support / requests Msg4 HARQ-ACK repeated transmission or there is no uplink indication, the terminal sends an uplink control instruction once.

[0338] In an implementation manner where the retransmission count is determined according to the uplink indication of the terminal, the network device does not configure the retransmission count through RRC, that is, this parameter is not included in the RRC configuration.

[0339] In an implementation manner where the retransmission count is not configured by the network device through RRC, the terminal indicates to the network device through the PRACH resource set and / or Msg3 that it supports / requests Msg4 HARQ-ACK repeated transmission, and the network device indicates through a specific field in the DCI instruction (DCI 1-0 format by TC-RNTI) for scheduling Msg4.

[0340] Among them, the retransmission count is directly indicated according to the bit value of the specific field;

[0341] Or it is indicated according to the index corresponding to a group of predefined values of the bit value of the specific field.

[0342] At this time, the retransmission count is indicated by the DCI instruction, and the terminal determines the retransmission count according to the indication of the network device's DCI instruction.

[0343] In an implementation manner where the retransmission count is not configured by the network device through RRC, the terminal indicates to the network device through the PRACH resource set and / or Msg3 that it supports / requests Msg4 HARQ-ACK repeated transmission, and the network device selects one value from multiple values through the PDSCH carrying msg4 for indication. At this time, it is indicated through the information of the PDSCH (such as MAC CE), and the terminal determines the retransmission count according to the indication of the network device's MAC CE.

[0344] In an implementation manner where the retransmission count is not configured by the network device through RRC, the terminal indicates to the network device through the PRACH resource set and / or Msg3 that it does not support / requests Msg4 HARQ-ACK repeated transmission or there is no uplink indication, and the terminal sends an uplink control instruction once. The uplink coverage enhancement method provided in this embodiment is a method for implicitly indicating single transmission.

[0345] In an implementation of determining the retransmission count based on the uplink indication of the terminal, the network device indicates to disable the retransmission count and / or invalidate the retransmission count through RRC signaling (such as common PUCCH configuration). For example, the retransmission count is an unavailable value. The uplink coverage enhancement method provided in this embodiment is a method for implicitly indicating single transmission.

[0346] In an implementation where the retransmission count is disabled or invalidated through the network device's RRC configuration, the terminal indicates to support / request Msg4 HARQ-ACK retransmission to the network device through the PRACH resource set and / or Msg3. The network device indicates through a specific field in the DCI (DCI 1-0 format by TC-RNTI) that schedules Msg4.

[0347] Among them, it is directly indicated according to the bit value of the specific field;

[0348] Or it is indicated according to the index corresponding to a group of predefined values based on the bit value of the specific field.

[0349] At this time, the retransmission count is indicated through the DCI instruction, and the terminal determines the retransmission count according to the indication of the network device's DCI instruction.

[0350] In an implementation where the retransmission count is disabled or invalidated through the network device's RRC configuration, the terminal indicates to support / request Msg4 HARQ-ACK retransmission to the network device through the PRACH resource set and / or Msg3. The network device selects one value from multiple values through the PDSCH carrying Msg4 for indication. At this time, it is indicated through the information of the PDSCH (such as MAC CE), and the terminal determines the retransmission count according to the indication of the network device's MAC CE.

[0351] In an implementation where the retransmission count is disabled or invalidated through the network device's RRC configuration, the terminal indicates to the network device that it does not support / request Msg4 HARQ-ACK retransmission or has no uplink indication through the PRACH resource set and / or Msg3. The terminal sends an uplink control instruction once, that is, the first retransmission count and / or the second transmission count is 1.

[0352] In an implementation of determining the number of retransmissions based on the uplink indication of the terminal, if the terminal does not indicate support / request for Msg4 HARQ-ACK retransmission to the network device through the PRACH resource set and / or Msg3, or indicates no support / request for Msg4 HARQ-ACK retransmission to the network device through the PRACH resource set and / or Msg3, the terminal performs a single transmission of Msg.4 HARQ-ACK, that is, the first retransmission number and / or the second transmission number is 1. The uplink coverage enhancement method provided in this embodiment is a method for implicitly indicating single transmission.

[0353] For the uplink coverage enhancement method provided in the embodiments of the present disclosure, the terminal sends retransmission indication information to the network device to indicate that the terminal retransmits uplink control information on the common physical uplink control channel resource. According to the retransmission indication sent by the network device, the number of times of sending uplink control information on the common physical uplink control channel resource is determined, and according to the determined number of times, the uplink control information is sent on the common physical uplink control channel resource, so as to realize that the uplink control information can be sent according to the determined number of times on the common physical uplink control channel resource, and the coverage of the common physical uplink control channel is enhanced.

[0354] Based on the same concept, the embodiments of the present disclosure provide an uplink coverage enhancement method executed by a network device.

[0355] Figure 7 It is a flowchart of yet another uplink coverage enhancement method shown according to an exemplary embodiment. As Figure 7 shown, applied to a network device, it includes the following steps:

[0356] In step S601, receive the retransmission indication information sent by the terminal.

[0357] In step S602, send a retransmission indication to the terminal to determine the number of times the terminal sends uplink control information on the common physical uplink control channel resource.

[0358] In step S603, receive the uplink control information sent by the terminal on the common physical uplink control channel resource according to the determined number of times.

[0359] For the uplink coverage enhancement method provided in the embodiments of the present disclosure, the terminal sends retransmission indication information to the network device to indicate that the terminal retransmits uplink control information on the common physical uplink control channel resource. The terminal determines the number of times of sending uplink control information on the common physical uplink control channel resource according to the retransmission indication sent by the network device, and according to the determined number of times, the uplink control information is sent on the common physical uplink control channel resource, so as to realize that the uplink control information can be sent according to the determined number of times on the common physical uplink control channel resource, and the coverage of the common physical uplink control channel is enhanced.

[0360] In one implementation of the uplink coverage enhancement method provided by the embodiments of the present disclosure, when the terminal determines that the condition for sending a retransmission indication message to the network device is met, the terminal sends a retransmission indication message to the network device.

[0361] In one implementation of the uplink coverage enhancement method provided by the embodiments of the present disclosure, the condition for sending a retransmission indication message to the network device is determined based on a downlink signal reference signal received power threshold.

[0362] In one implementation, the downlink signal reference signal received power threshold is determined by multiplexing the existing Msg3 downlink signal reference signal received power.

[0363] In another implementation, a custom threshold is determined as the downlink signal reference signal received power threshold.

[0364] Among them, the condition for sending a retransmission indication message to the network device includes that the downlink signal reference signal received power measured by the terminal is lower than the downlink signal reference signal received power threshold. That is, before the terminal sends a retransmission indication message to the network device, it determines that the downlink signal reference signal received power measured by the terminal is lower than the downlink signal reference signal received power threshold.

[0365] For the uplink coverage enhancement method provided by the embodiments of the present disclosure, the terminal sends a retransmission indication message to the network device, and the retransmission indication message includes at least one of a retransmission capability and a retransmission request. Among them, the retransmission capability is used to indicate the terminal's ability to support the retransmission of uplink control information on the common physical uplink control channel resource. For example, this capability can be whether it supports the retransmission of uplink control information on the common physical uplink control channel resource. That is, the retransmission capability is at least used to indicate the terminal's retransmission capability on the common physical uplink control channel resource. The retransmission request is used to indicate that the terminal needs to perform retransmission of uplink control information.

[0366] In one implementation of the uplink coverage enhancement method provided by the embodiments of the present disclosure, the retransmission indication message includes a retransmission capability.

[0367] In another implementation of the uplink coverage enhancement method provided by the embodiments of the present disclosure, the retransmission indication message includes a retransmission request.

[0368] In yet another implementation of the uplink coverage enhancement method provided by the embodiments of the present disclosure, the retransmission indication message includes a retransmission capability and a retransmission request.

[0369] In one implementation, the retransmission indication message is indicated based on a set of physical random access channel resources;

[0370] Among them, there is a corresponding relationship between the set of physical random access channel resources and the retransmission of uplink control information; or,

[0371] There is a corresponding relationship between the physical random access channel resource set and the retransmission times of the uplink control information.

[0372] In one embodiment, the retransmission indication information is indicated based on Msg3, and the Msg3 includes an information field for indicating the retransmission indication information;

[0373] Wherein, the information field includes a single bit, and the single bit is used to indicate the retransmission indication information and / or the retransmission times value in the single retransmission times group; or,

[0374] The information field includes multiple bits, and the multiple bits are used to indicate the first retransmission times, and the first retransmission times are the retransmission times reported by the network device receiving the terminal;

[0375] Wherein, the retransmission indication information includes the retransmission capability, and the first retransmission times are the retransmission times supported by the terminal;

[0376] The retransmission indication information includes a retransmission request, and the first retransmission times are the retransmission times recommended by the terminal.

[0377] In one embodiment, the retransmission indication includes a first signaling and / or a second signaling;

[0378] The first signaling is configured with retransmission times information, and the retransmission times information includes an enabled retransmission times and / or an effective retransmission times, and the enabled retransmission times and / or the effective retransmission times are a single retransmission times value. Based on the first signaling, a second retransmission times is determined, and the second retransmission times is the retransmission times for the terminal to retransmit the uplink control information on the common physical uplink control channel resource;

[0379] The first signaling is configured with retransmission times information, and the retransmission times information includes a disabled retransmission times and / or an invalid retransmission times. Based on the first signaling, it is determined that the number of times to send the uplink control information on the common physical uplink control channel resource is a single transmission;

[0380] The first signaling is configured with retransmission times information, and the retransmission times information includes an enabled retransmission times and / or an effective retransmission times, and the enabled retransmission times and / or the effective retransmission times are multiple retransmission times values. Based on the first signaling and the second signaling, a second retransmission times is determined, and the second retransmission times is the retransmission times for the terminal to retransmit the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate the index of one retransmission times among the multiple retransmission times, or the second signaling is used to indicate one retransmission times;

[0381] The first signaling does not configure the retransmission count information. Based on the second signaling, determine the second retransmission count. The second retransmission count is the retransmission count of the terminal for retransmitting the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate the index of one retransmission count among multiple retransmission counts, or the second signaling is used to indicate a retransmission count.

[0382] In one embodiment, the second signaling includes at least one of the following information fields:

[0383] The first information field, the bit value of the first information field is used to represent the index of one retransmission count among the multiple retransmission counts configured by the first signaling;

[0384] The second information field, the bit value of the second information field is used to represent the index of a predefined retransmission count;

[0385] The third information field, the third information field is used to represent the retransmission count.

[0386] In one embodiment, the second signaling includes the downlink control signaling DCI of the network device scheduling message 4, or the second signaling includes the MAC CE in the physical downlink control channel PDSCH carrying the message 4.

[0387] In one embodiment, the second signaling includes the downlink control signaling DCI of the network device scheduling message 4, and at least one information field included in the second signaling is the information field corresponding to the highest significant X bits in the modulation and coding strategy MCS field, where X is a positive integer.

[0388] In one embodiment, the first signaling is a radio resource control RRC signaling.

[0389] In one embodiment, before receiving the retransmission indication information sent by the terminal, the method further includes:

[0390] Determine that the received power of the downlink signal reference signal measured by the terminal is lower than the downlink signal reference signal reception power threshold.

[0391] In one embodiment, determine that the condition for single transmission of the uplink control information is satisfied, and determine that the number of times of transmitting the uplink control information on the common physical uplink control channel resource is a single transmission;

[0392] The conditions for satisfying single transmission of the uplink control information include at least one of the following:

[0393] The terminal does not support retransmission of the uplink control information;

[0394] The terminal does not retransmit the uplink control information based on the physical random access channel resource set and / or the Msg3 request;

[0395] The network device sends indication information for indicating single transmission.

[0396] In one embodiment, the uplink control information includes a Hybrid Automatic Repeat reQuest ACKnowledgment (Msg4 HARQ-ACK) message for Message 4.

[0397] It should be noted that the uplink coverage enhancement method applied to the network device in the embodiments of the present disclosure is similar to the execution process of the uplink coverage enhancement method applied to the terminal. For details, please refer to the description of the above related embodiments, which will not be repeated here.

[0398] The uplink coverage enhancement method provided by the present disclosure is applicable to the process of realizing uplink coverage enhancement through the interaction between the terminal and the network device. In the method of realizing uplink coverage enhancement through the interaction between the terminal and the network device, the terminal and the network device respectively have the relevant functions involved in the uplink coverage enhancement method in the above embodiments, so they will not be repeated here.

[0399] It should be noted that those skilled in the art can understand that the various embodiments / implementations involved in the embodiments of the present disclosure can be used in combination with the foregoing embodiments or independently. Whether used alone or in combination with the foregoing embodiments, their implementation principles are similar. In the embodiments of the present disclosure, some embodiments are described in the form of implementation manners used in combination. Of course, those skilled in the art can understand that such illustrative examples do not limit the embodiments of the present disclosure.

[0400] Based on the same concept, the embodiments of the present disclosure also provide an uplink coverage enhancement apparatus.

[0401] It can be understood that, in order to implement the above functions, the uplink coverage enhancement apparatus provided by the embodiments of the present disclosure includes the corresponding hardware structures and / or software modules for executing each function. Combining the units and algorithm steps of the examples disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiments of the present disclosure.

[0402] Figure 8 is a block diagram of an uplink coverage enhancement apparatus shown according to an exemplary embodiment. Referring to Figure 8 , the uplink coverage enhancement apparatus 200 includes a sending unit 201 and an indicating unit 202.

[0403] The sending unit 201 is configured to send retransmission indication information to the network device, and the retransmission indication information is used to indicate the terminal to retransmit uplink control information on the public physical uplink control channel resource.

[0404] An indication unit 202, configured to determine the number of times of sending uplink control information on a common physical uplink control channel resource based on a retransmission indication sent by a network device.

[0405] The indication unit 202 is further configured to send the uplink control information on the common physical uplink control channel resource according to the determined number of times.

[0406] In one embodiment, the retransmission indication information includes at least one of the following:

[0407] Retransmission capability, which is used to indicate the capability of the terminal to support retransmission of uplink control information on a common physical uplink control channel resource;

[0408] Retransmission request, which is used to indicate that the terminal needs to retransmit uplink control information.

[0409] In one embodiment, the retransmission indication information is indicated based on a physical random access channel resource set;

[0410] Wherein, there is a corresponding relationship between the physical random access channel resource set and the retransmission of uplink control information; or,

[0411] There is a corresponding relationship between the physical random access channel resource set and the number of times of retransmission of uplink control information.

[0412] In one embodiment, the retransmission indication information is indicated based on Msg3, and an information field for indicating the retransmission indication information is included in Msg3;

[0413] Wherein, the information field includes a single bit;

[0414] The single bit is used to indicate the retransmission indication information and / or the retransmission count value in the single retransmission count group; or,

[0415] The information field includes multiple bits;

[0416] The multiple bits are used to indicate a first retransmission count, where the first retransmission count is the retransmission count reported by the terminal to the network device;

[0417] Wherein, in response to the retransmission indication information including retransmission capability, the first retransmission count is the retransmission count supported by the terminal;

[0418] In response to the retransmission indication information including a retransmission request, the first retransmission count is the retransmission count recommended by the terminal.

[0419] In one embodiment, the retransmission indication includes a first signaling and / or a second signaling;

[0420] In response to the first signaling being configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a single retransmission count value. Based on the first signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count for the terminal to retransmit the uplink control information on the common physical uplink control channel resource;

[0421] In response to the first signaling being configured with retransmission count information, the retransmission count information includes a disabled retransmission count and / or an invalid retransmission count. Based on the first signaling, it is determined that the number of times to transmit the uplink control information on the common physical uplink control channel resource is a single transmission;

[0422] In response to the first signaling being configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a plurality of retransmission count values. Based on the first signaling and the second signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count for the terminal to retransmit the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among the plurality of retransmission counts, or the second signaling is used to indicate a retransmission count;

[0423] In response to the first signaling not being configured with retransmission count information, based on the second signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count for the terminal to retransmit the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among the plurality of retransmission counts, or the second signaling is used to indicate a retransmission count.

[0424] In one implementation, the second signaling includes at least one of the following information fields:

[0425] A first information field, and the bit value of the first information field is used to represent an index of one retransmission count among the plurality of retransmission counts configured by the first signaling;

[0426] A second information field, and the bit value of the second information field is used to represent an index of a predefined retransmission count;

[0427] A third information field, and the third information field is used to represent the retransmission count.

[0428] In one implementation, the second signaling includes the downlink control signaling DCI of the network device scheduling message 4, or the second signaling includes the MAC CE in the physical downlink control channel PDSCH carrying the message 4.

[0429] In one implementation, in response to the second signaling including the downlink control signaling DCI of the network device scheduling message 4, at least one information field included in the second signaling is the information field corresponding to the highest significant X bits in the modulation and coding strategy MCS field, where X is a positive integer.

[0430] In one embodiment, the first signaling is Radio Resource Control (RRC) signaling.

[0431] In one embodiment, before sending the retransmission indication information to the network device, the uplink coverage enhancement apparatus 200 further includes a determination unit 203.

[0432] The determination unit 203 is configured to determine that the received power of the downlink signal reference signal measured by the terminal is lower than the downlink signal reference signal reception power threshold.

[0433] In one embodiment, when it is determined that the condition for single transmission of uplink control information is met, it is determined that the number of times of sending uplink control information on the common physical uplink control channel resource is single transmission;

[0434] The conditions for single transmission of uplink control information include at least one of the following:

[0435] The terminal does not support retransmission of uplink control information;

[0436] The terminal does not retransmit uplink control information based on the physical random access channel resource set and / or Msg3 request;

[0437] An indication information for indicating single transmission sent by the network device is received.

[0438] In one embodiment, the uplink control information includes a Hybrid Automatic Repeat reQuest ACKnowledgement (Msg4 HARQ-ACK) message of Message 4.

[0439] Figure 9 It is a block diagram of an uplink coverage enhancement apparatus shown according to an exemplary embodiment. Refer to Figure 9 , the uplink coverage enhancement apparatus 300 includes a receiving unit 301 and a control unit 302.

[0440] The receiving unit 301 is configured to receive the retransmission indication information sent by the terminal, where the retransmission indication information is used to indicate that the terminal retransmits uplink control information on the common physical uplink control channel resource.

[0441] The control unit 302 is configured to send a retransmission indication to the terminal, where the retransmission indication is used to indicate that the terminal determines the number of times of sending uplink control information on the common physical uplink control channel resource.

[0442] The control unit 302 is further configured to receive the uplink control information sent by the terminal on the common physical uplink control channel resource according to the determined number of times.

[0443] In one embodiment, the retransmission indication information includes at least one of the following:

[0444] Retransmission capability, which is used to indicate the terminal's capability to support the retransmission of uplink control information on common physical uplink control channel resources;

[0445] Retransmission request, which is used to indicate that the terminal needs to retransmit uplink control information.

[0446] In one implementation, the retransmission indication information is indicated based on a set of physical random access channel resources;

[0447] Among them, there is a corresponding relationship between the set of physical random access channel resources and the retransmission of uplink control information; or,

[0448] There is a corresponding relationship between the set of physical random access channel resources and the number of retransmissions of uplink control information.

[0449] In one implementation, the retransmission indication information is indicated based on Msg3, and the information field for indicating the retransmission indication information is included in Msg3;

[0450] Among them, the information field includes a single bit;

[0451] The single bit is used to indicate the retransmission indication information and / or the retransmission count value in the single retransmission count group; or,

[0452] The information field includes multiple bits;

[0453] The multiple bits are used to indicate the first retransmission count, and the first retransmission count is the retransmission count reported by the network device received from the terminal;

[0454] Among them, the retransmission indication information includes the retransmission capability, and the first retransmission count is the retransmission count supported by the terminal;

[0455] The retransmission indication information includes the retransmission request, and the first retransmission count is the retransmission count recommended by the terminal.

[0456] In one implementation, the retransmission indication includes the first signaling and / or the second signaling;

[0457] The first signaling is configured with retransmission count information, and the retransmission count information includes the enabled retransmission count and / or the valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a single retransmission count value. Based on the first signaling, the second retransmission count is determined, and the second retransmission count is the retransmission count of the terminal for retransmitting uplink control information on common physical uplink control channel resources;

[0458] The first signaling is configured with retransmission count information, and the retransmission count information includes the disabled retransmission count and / or the invalid retransmission count. Based on the first signaling, it is determined that the number of times of sending uplink control information on common physical uplink control channel resources is a single transmission;

[0459] The first signaling is configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or an effective retransmission count, and the enabled retransmission count and / or the effective retransmission count are multiple retransmission count values. Based on the first signaling and the second signaling, a second retransmission count is determined. The second retransmission count is the retransmission count of the terminal for retransmitting the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among multiple retransmission counts, or the second signaling is used to indicate a retransmission count.

[0460] The first signaling is not configured with retransmission count information. Based on the second signaling, a second retransmission count is determined. The second retransmission count is the retransmission count of the terminal for retransmitting the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among multiple retransmission counts, or the second signaling is used to indicate a retransmission count.

[0461] In one implementation, the second signaling includes at least one of the following information fields:

[0462] A first information field, the bit value of the first information field is used to represent an index of one retransmission count among the multiple retransmission counts configured by the first signaling;

[0463] A second information field, the bit value of the second information field is used to represent an index of a predefined retransmission count;

[0464] A third information field, the third information field is used to represent the retransmission count.

[0465] In one implementation, the second signaling includes the downlink control signaling DCI of the network device scheduling message 4, or the second signaling includes the MAC CE in the physical downlink control channel PDSCH carrying the message 4.

[0466] In one implementation, the second signaling includes the downlink control signaling DCI of the network device scheduling message 4, and at least one information field included in the second signaling is the information field corresponding to the highest significant X bits in the modulation and coding strategy MCS field, where X is a positive integer.

[0467] In one implementation, the first signaling is the radio resource control RRC signaling.

[0468] In one implementation, before receiving the retransmission indication information sent by the terminal, the uplink coverage enhancement device 300 further includes a determination unit 303.

[0469] The determination unit 303 is used to determine that the received signal strength of the downlink signal reference signal measured by the terminal is lower than the downlink signal reference signal reception power threshold.

[0470] In one embodiment, it is determined that the condition for single - transmission of uplink control information is met, and it is determined that the number of times of transmitting uplink control information on the common physical uplink control channel resource is a single transmission;

[0471] The conditions for single - transmission of uplink control information include at least one of the following:

[0472] The terminal does not support re - transmission of uplink control information;

[0473] The terminal does not re - transmit uplink control information based on the physical random access channel resource set and / or Msg3 request;

[0474] The network device sends indication information for indicating single - transmission.

[0475] In one embodiment, the uplink control information includes a hybrid automatic repeat request acknowledgement Msg4 HARQ - ACK message of Message 4.

[0476] Regarding the device in the above - mentioned embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments related to the method, and will not be elaborated here.

[0477] Figure 10 It is a block diagram of a device 400 for uplink coverage enhancement shown according to an exemplary embodiment. For example, the device 400 can be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0478] Referring to Figure 10 , the device 400 may include one or more of the following components: a processing component 402, a memory 404, a power component 406, a multimedia component 408, an audio component 410, an input / output (I / O) interface 412, a sensor component 414, and a communication component 416.

[0479] The processing component 402 generally controls the overall operation of the device 400, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to complete all or part of the steps of the above - mentioned method. In addition, the processing component 402 may include one or more modules to facilitate the interaction between the processing component 402 and other components. For example, the processing component 402 may include a multimedia module to facilitate the interaction between the multimedia component 408 and the processing component 402.

[0480] The memory 404 is configured to store various types of data to support the operation of the device 400. Examples of such data include instructions for any application or method operating on the device 400, contact data, phone book data, messages, pictures, videos, and the like. The memory 404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, a magnetic disk, or an optical disk.

[0481] The power component 406 provides power to the various components of the device 400. The power component 406 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 400.

[0482] The multimedia component 408 includes a screen that provides an output interface between the device 400 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can sense not only the boundaries of a touch or swipe action but also detect the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 408 includes a front camera and / or a rear camera. When the device 400 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front camera and the rear camera can be a fixed optical lens system or have a focal length and optical zoom capabilities.

[0483] The audio component 410 is configured to output and / or input audio signals. For example, the audio component 410 includes a microphone (MIC) that is configured to receive external audio signals when the device 400 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 404 or transmitted via the communication component 416. In some embodiments, the audio component 410 further includes a speaker for outputting audio signals.

[0484] The I / O interface 412 provides an interface between the processing component 402 and a peripheral interface module, which can be a keyboard, a click wheel, buttons, etc. These buttons can include, but are not limited to: a home button, a volume button, a power-on button, and a lock button.

[0485] The sensor assembly 414 includes one or more sensors for providing an assessment of various aspects of the status of the device 400. For example, the sensor assembly 414 can detect the on / off state of the device 400, the relative positioning of components, such as the display and keypad of the device 400. The sensor assembly 414 can also detect a change in the position of the device 400 or a component of the device 400, the presence or absence of user contact with the device 400, the orientation or acceleration / deceleration of the device 400, and the temperature change of the device 400. The sensor assembly 414 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 414 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 414 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0486] The communication component 416 is configured to facilitate communication between the device 400 and other devices in a wired or wireless manner. The device 400 can access a wireless network based on communication standards, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 416 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0487] In an exemplary embodiment, the device 400 can be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above-described method.

[0488] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 404 including instructions, which can be executed by a processor 420 of the device 400 to complete the above-described method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0489] Figure 11 is a block diagram of a device 1100 for uplink coverage enhancement shown according to an exemplary embodiment. For example, the device 1100 can be provided as a server. Refer to Figure 11, the apparatus 1100 includes a processing component 1122, which further includes one or more processors, and memory resources represented by a memory 1132 for storing instructions executable by the processing component 1122, such as application programs. The application programs stored in the memory 1132 may include one or more modules each corresponding to a set of instructions. In addition, the processing component 1122 is configured to execute instructions to perform the above method.

[0490] The apparatus 1100 may further include a power component 1126 configured to perform power management of the apparatus 1100, a wired or wireless network interface 1150 configured to connect the apparatus 1100 to a network, and an input / output (I / O) interface 1158. The apparatus 1100 may operate based on an operating system stored in the memory 1132, such as Windows ServerTM, MacOS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.

[0491] It can be further understood that in the present disclosure, "a plurality of" means two or more, and other quantifiers are similar thereto. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after. The singular forms of "a", "the" and "said" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0492] It can be further understood that the meanings of words such as "responsive to" and "if" involved in the present disclosure depend on the context and the actual usage scenario. For example, the word "responsive to" as used herein may be interpreted as "when...", "while...", "if" or "when".

[0493] It can be further understood that terms such as "first" and "second" are used to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other and do not represent a specific order or importance. In fact, the expressions such as "first" and "second" can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information.

[0494] It can be further understood that although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring these operations to be performed in the specific order shown or in a serial order, or requiring all the operations shown to obtain the desired result. In a specific environment, multitasking and parallel processing may be advantageous.

[0495] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed in the present disclosure.

[0496] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. An uplink coverage enhancement method, characterized in that, Applied to a terminal, including: Sending retransmission indication information to a network device, where the retransmission indication information is used to indicate that the terminal retransmits uplink control information on a common physical uplink control channel resource; Determining the number of times to send the uplink control information on the common physical uplink control channel resource based on the retransmission indication sent by the network device, and Sending the uplink control information on the common physical uplink control channel resource according to the determined number of times; The retransmission indication information includes: retransmission capability, where the retransmission capability is used to indicate the terminal's ability to support retransmission of uplink control information on the common physical uplink control channel resource; The retransmission indication includes a first signaling and / or a second signaling; In response to the first signaling being configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a single retransmission count value. Based on the first signaling, determining a second retransmission count, where the second retransmission count is the number of times the terminal retransmits the uplink control information on the common physical uplink control channel resource; In response to the first signaling being configured with retransmission count information, the retransmission count information includes a disabled retransmission count and / or an invalid retransmission count. Based on the first signaling, determining that the number of times to send the uplink control information on the common physical uplink control channel resource is a single transmission; In response to the first signaling being configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a plurality of retransmission count values. Based on the first signaling and the second signaling, determining a second retransmission count, where the second retransmission count is the number of times the terminal retransmits the uplink control information on the common physical uplink control channel resource, and the second signaling is used to indicate an index of one of the plurality of retransmission counts, or the second signaling is used to indicate a retransmission count; In response to the first signaling not being configured with retransmission count information, based on the second signaling, determining a second retransmission count, where the second retransmission count is the number of times the terminal retransmits the uplink control information on the common physical uplink control channel resource, and the second signaling is used to indicate an index of one of the plurality of retransmission counts, or the second signaling is used to indicate a retransmission count.

2. The method according to claim 1, wherein The retransmission indication information further includes: A retransmission request, which is used to indicate that the terminal needs to retransmit uplink control information.

3. The method according to claim 2, wherein The retransmission indication information is indicated based on a physical random access channel resource set; Wherein, there is a corresponding relationship between the physical random access channel resource set and the retransmission of uplink control information; or, there is a corresponding relationship between the physical random access channel resource set and the number of retransmissions of uplink control information.

4. The method according to claim 2, wherein The retransmission indication information is indicated based on Message 3, and the Message 3 includes an information field for indicating the retransmission indication information; Wherein, the information field includes a single bit. The single bit is used to indicate the retransmission indication information and / or the retransmission count value in the single retransmission count array; or, The information field includes multiple bits; The multiple bits are used to indicate a first retransmission count, and the first retransmission count is the retransmission count reported by the terminal to the network device; Wherein, in response to the retransmission indication information including a retransmission capability, the first retransmission count is the retransmission count supported by the terminal; In response to the retransmission indication information including a retransmission request, the first retransmission count is the retransmission count recommended by the terminal.

5. The method according to claim 1, characterized in that The second signaling includes at least one of the following information fields: A first information field, and the bit value of the first information field is used to represent an index of a retransmission count among multiple retransmission counts configured by the first signaling; A second information field, and the bit value of the second information field is used to represent an index of a predefined retransmission count; A third information field, and the third information field is used to represent a retransmission count.

6. The method according to claim 1 or 5, characterized in that, The second signaling includes the downlink control signaling DCI of the network device scheduling message 4, or the second signaling includes the MAC CE in the physical downlink control channel PDSCH carrying message 4.

7. The method according to claim 6, wherein In response to the second signaling including the downlink control signaling DCI of the network device scheduling message 4, at least one information field included in the second signaling is the information field corresponding to the highest significant X bits in the modulation and coding strategy MCS field, where X is a positive integer.

8. The method according to any one of claims 1 to 7, characterized in that The first signaling is a radio resource control RRC signaling.

9. The method according to claim 1, characterized in that, Before sending the retransmission indication information to the network device, the method further includes: Determining that the reference signal received power of the downlink signal measured by the terminal is lower than the downlink signal reference signal received power threshold.

10. The method according to claim 1, characterized in that Determining that the condition for single transmission of the uplink control information is met, and determining that the number of times of sending the uplink control information on the common physical uplink control channel resource is single transmission; The condition for single transmission of the uplink control information includes at least one of the following: The terminal does not support retransmission of the uplink control information; The terminal does not request to send the retransmission indication information based on the physical random access channel resource set and / or message 3; Receiving indication information sent by the network device for indicating single transmission.

11. The method according to any one of claims 1 to 10, characterized in that, The uplink control information includes a hybrid automatic repeat request acknowledgment Msg4 HARQ-ACK message of message 4.

12. An uplink coverage enhancement method, characterized in that, Applied to a network device, it includes: Receiving retransmission indication information sent by a terminal, where the retransmission indication information is used to indicate that the terminal retransmits uplink control information on a common physical uplink control channel resource; Sending a retransmission indication to the terminal, where the retransmission indication is used to indicate that the terminal determines the number of times of sending the uplink control information on the common physical uplink control channel resource, and Receiving the uplink control information sent by the terminal on the common physical uplink control channel resource according to the determined number of times; The retransmission indication information includes: a retransmission capability, and the retransmission capability is used to indicate the capability of the terminal to support retransmission of uplink control information on the common physical uplink control channel resource; The retransmission indication includes the first signaling and / or the second signaling; The first signaling is configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a single retransmission count value. Based on the first signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count for the terminal to retransmit the uplink control information on the common physical uplink control channel resource; The first signaling is configured with retransmission count information, the retransmission count information includes a disabled retransmission count and / or an invalid retransmission count. Based on the first signaling, the number of times to send the uplink control information on the common physical uplink control channel resource is determined as a single transmission; The first signaling is configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count is a plurality of retransmission count values. Based on the first signaling and the second signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count for the terminal to retransmit the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among the plurality of retransmission counts, or the second signaling is used to indicate a retransmission count; The first signaling is not configured with retransmission count information. Based on the second signaling, a second retransmission count is determined, and the second retransmission count is the retransmission count for the terminal to retransmit the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among the plurality of retransmission counts, or the second signaling is used to indicate a retransmission count.

13. The method according to claim 12, characterized in that, The retransmission indication information further includes: A retransmission request, which is used to indicate that the terminal needs to retransmit the uplink control information.

14. The method according to claim 13, characterized in that, The retransmission indication information is indicated based on a physical random access channel resource set; Wherein, there is a corresponding relationship between the physical random access channel resource set and the retransmission of the uplink control information; or, There is a corresponding relationship between the physical random access channel resource set and the retransmission count of the uplink control information.

15. The method according to claim 14, wherein The retransmission indication information is indicated based on Message 3, and the Message 3 includes an information field for indicating the retransmission indication information; Wherein, the information field includes a single bit; The single bit is used to indicate the retransmission indication information and / or the retransmission count value in the single retransmission count group; or, The information field includes a plurality of bits; The plurality of bits are used to indicate a first retransmission count, and the first retransmission count is the retransmission count received by the network device from the terminal; Wherein, the retransmission indication information includes a retransmission capability, and the first retransmission count is the retransmission count supported by the terminal; The retransmission indication information includes a retransmission request, and the first retransmission count is the retransmission count recommended by the terminal.

16. The method according to claim 12, wherein The second signaling includes at least one of the following information fields: A first information field, and the bit value of the first information field is used to represent an index of one retransmission count among the plurality of retransmission counts configured by the first signaling; A second information field, and the bit value of the second information field is used to represent an index of a predefined retransmission count; The third information field, which is used to indicate the number of retransmissions.

17. The method according to claim 12 or 16, characterized in that, The second signaling includes the downlink control signaling DCI of the network device scheduling message 4, or the second signaling includes the MAC CE in the physical downlink control channel PDSCH carrying message 4.

18. The method according to claim 17, wherein The second signaling includes the downlink control signaling DCI of the network device scheduling message 4, and at least one information field included in the second signaling is the information field corresponding to the highest significant X bits in the modulation and coding strategy MCS field, where X is a positive integer.

19. The method according to any one of claims 12 - 18, characterized in that, The first signaling is radio resource control RRC signaling.

20. The method according to claim 12, characterized in that, Before receiving the retransmission indication information sent by the terminal, the method further includes: Determining that the received power of the downlink signal reference signal measured by the terminal is lower than the downlink signal reference signal reception power threshold.

21. The method according to claim 12, characterized in that, Determining that the condition for single - transmission of the uplink control information is met, and determining that the number of times of sending the uplink control information on the common physical uplink control channel resource is single - transmission; The condition for single - transmission of the uplink control information includes at least one of the following: The terminal does not support retransmission of the uplink control information; The terminal does not request to send the retransmission indication information based on the physical random access channel resource set and / or message 3; The network device sends indication information for indicating single - transmission.

22. The method according to any one of claims 12 to 21, characterized in that, The uplink control information includes the hybrid automatic repeat request acknowledgment Msg4 HARQ - ACK message of message 4.

23. An uplink coverage enhancement device, characterized in that, Applied to a terminal, it includes: A sending unit, configured to send retransmission indication information to a network device, where the retransmission indication information is used to indicate that the terminal retransmits uplink control information on a common physical uplink control channel resource; An indication unit, configured to determine the number of times of sending the uplink control information on the common physical uplink control channel resource based on the retransmission indication sent by the network device; The indication unit is further configured to send the uplink control information on the common physical uplink control channel resource according to the determined number of times; The retransmission indication information includes: Retransmission capability, which is used to indicate the capability of the terminal to support retransmission of uplink control information on the common physical uplink control channel resource; The retransmission indication includes the first signaling and / or the second signaling; In response to the first signaling being configured with retransmission times information, where the retransmission times information includes an enabled retransmission times and / or an effective retransmission times, and the enabled retransmission times and / or the effective retransmission times are a single retransmission times value, based on the first signaling, determine a second retransmission times, where the second retransmission times is the number of times the terminal retransmits the uplink control information on the common physical uplink control channel resource; In response to the first signaling being configured with retransmission times information, where the retransmission times information includes a disabled retransmission times and / or an invalid retransmission times, based on the first signaling, determine that the number of times of sending the uplink control information on the common physical uplink control channel resource is single - transmission; In response to the first signaling being configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count are multiple retransmission count values. Based on the first signaling and the second signaling, a second retransmission count is determined, where the second retransmission count is the number of times the terminal retransmits the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among multiple retransmission counts, or the second signaling is used to indicate a retransmission count. In response to the first signaling not being configured with retransmission count information, based on the second signaling, a second retransmission count is determined, where the second retransmission count is the number of times the terminal retransmits the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among multiple retransmission counts, or the second signaling is used to indicate a retransmission count.

24. An uplink coverage enhancement device, characterized in that, Applied to a network device, it includes: A receiving unit, configured to receive retransmission indication information sent by a terminal, where the retransmission indication information is used to indicate that the terminal retransmits uplink control information on a common physical uplink control channel resource. A control unit, configured to send a retransmission indication to the terminal, where the retransmission indication is used to indicate to the terminal to determine the number of times the terminal sends the uplink control information on the common physical uplink control channel resource. The control unit is further configured to receive the uplink control information sent by the terminal on the common physical uplink control channel resource according to the determined number of times. The retransmission indication information includes: retransmission capability, where the retransmission capability is used to indicate the capability of the terminal to support retransmission of uplink control information on the common physical uplink control channel resource. The retransmission indication includes a first signaling and / or a second signaling. The first signaling is configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count are a single retransmission count value. Based on the first signaling, a second retransmission count is determined, where the second retransmission count is the number of times the terminal retransmits the uplink control information on the common physical uplink control channel resource. The first signaling is configured with retransmission count information, the retransmission count information includes a disabled retransmission count and / or an invalid retransmission count. Based on the first signaling, it is determined that the number of times of sending the uplink control information on the common physical uplink control channel resource is a single transmission. The first signaling is configured with retransmission count information, the retransmission count information includes an enabled retransmission count and / or a valid retransmission count, and the enabled retransmission count and / or the valid retransmission count are multiple retransmission count values. Based on the first signaling and the second signaling, a second retransmission count is determined, where the second retransmission count is the number of times the terminal retransmits the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among multiple retransmission counts, or the second signaling is used to indicate a retransmission count. The first signaling does not configure retransmission count information, and based on the second signaling, a second retransmission count is determined. The second retransmission count is the retransmission count for the terminal to retransmit the uplink control information on the common physical uplink control channel resource. The second signaling is used to indicate an index of one retransmission count among multiple retransmission counts, or the second signaling is used to indicate a retransmission count.

25. An uplink coverage enhancement device, characterized in that, Comprising: a processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the method according to any one of claims 1 to 11, or execute the method according to any one of claims 12 to 22.

26. A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by a processor of a terminal, enabling the terminal to execute the method according to any one of claims 1 to 11; or when executed by a processor of a network device, enabling the network device to execute the method according to any one of claims 12 to 22.

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