Communication method, terminal, network device, system, and storage medium

Abstract

The present disclosure relates to a communication method, a terminal, a network device, a system, and a storage medium. The method comprises: sending auxiliary information to a network device, the auxiliary information being used for instructing the network device to determine, on the basis of the auxiliary information, the number of retransmissions of first downlink access information. The first downlink access information comprises: at least one of contention-based random access response information Msg2, contention resolution information Msg4, and non-contention-based random access response information MsgB. Therefore, a network device is, by means of auxiliary information reported by a terminal, assisted in determining the number of retransmissions of downlink access information, thereby improving downlink coverage performance of the network device.

Description

Communication method, terminal, network device, system and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a communication method, terminal, network device, system, and storage medium. Background Art

[0002] For NTN (Non-Terrestrial Network) networks, downlink coverage issues are more severe than those for TN (Terrestrial Network) networks due to the higher altitude of satellites. Therefore, downlink coverage enhancement solutions are required to ensure communication quality. Random access downlink information, as part of downlink messages, can also face coverage issues in certain scenarios, hindering random access by terminals and affecting communication performance.

[0003] Summary of the Invention

[0004] In order to overcome the downlink coverage problem of random access information in related technologies, the present disclosure provides a communication method, terminal, network device, system and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, which is performed by a terminal. The method includes:

[0006] Send auxiliary information to the network device, where the auxiliary information is used to instruct the network device to determine the number of retransmissions of first downlink access information based on the auxiliary information, wherein the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

[0007] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, which is performed by a network device. The method includes:

[0008] receiving auxiliary information sent by the terminal;

[0009] Determine the number of retransmissions of first downlink access information according to the auxiliary information, wherein the first downlink access information includes at least one of: contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

[0010] According to a third aspect of an embodiment of the present disclosure, a communication method is provided, the method comprising:

[0011] The terminal sends auxiliary information to the network device;

[0012] The network device determines the number of retransmissions of first downlink access information according to the auxiliary information, wherein the first downlink access information includes at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

[0013] According to a fourth aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0014] The transceiver module is configured to send auxiliary information to the network device, where the auxiliary information is used to instruct the network device to determine the number of retransmissions of the first downlink access information based on the auxiliary information, wherein the first downlink access information includes: at least one of the contention random access response information Msg2, the contention resolution information Msg4, and the non-contention random access response information MsgB.

[0015] According to a fifth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0016] a transceiver module, configured to receive auxiliary information sent by the terminal;

[0017] The processing module is configured to determine the number of retransmissions of the first downlink access information according to the auxiliary information, wherein the first downlink access information includes: at least one of the contention random access response information Msg2, the contention resolution information Msg4 and the non-contention random access response information MsgB.

[0018] According to a sixth aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0019] one or more processors;

[0020] The terminal is used to execute the communication method described in any one of the first aspects of this disclosure.

[0021] According to a seventh aspect of an embodiment of the present disclosure, a network device is provided, including:

[0022] one or more processors;

[0023] The network device is used to execute the communication method described in any one of the second aspects of this disclosure.

[0024] According to an eighth aspect of an embodiment of the present disclosure, a communication system is provided, comprising a terminal and a network device, wherein the terminal is configured to implement the communication method described in any one of the first aspects of the present disclosure, and the network device is configured to implement the communication method described in any one of the second aspects of the present disclosure.

[0025] According to the ninth aspect of an embodiment of the present disclosure, a storage medium is provided, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method as described in the first aspect of the present disclosure, or the communication device executes the communication method as described in any one of the second aspects of the present disclosure.

[0026] In the above technical solution, auxiliary information is sent to the network device. The auxiliary information is used to instruct the network device to determine the number of retransmissions of the first downlink access information based on the auxiliary information. The first downlink access information includes at least one of: contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Thus, the terminal reports the auxiliary information to assist the network device in determining the number of retransmissions of the downlink access information, thereby improving the downlink coverage performance of the network device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0028] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0029] FIG2 is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure.

[0030] FIG3 is a flow chart of a communication method according to an embodiment of the present disclosure.

[0031] FIG4 is a flow chart showing a communication method according to an embodiment of the present disclosure.

[0032] FIG5 is a flow chart showing a communication method according to an embodiment of the present disclosure.

[0033] FIG6 is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure.

[0034] FIG7 is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure.

[0035] FIG8 is a schematic structural diagram of a communication device 8100 according to an embodiment of the present disclosure.

[0036] FIG9 is a schematic structural diagram of a chip 8200 according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] The embodiments of the present disclosure provide a communication method, a terminal, a network device, a system, and a storage medium.

[0038] In a first aspect, an embodiment of the present disclosure provides a communication method, which is executed by a terminal. The method includes:

[0039] Send auxiliary information to the network device, where the auxiliary information is used to instruct the network device to determine the number of retransmissions of first downlink access information based on the auxiliary information, wherein the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

[0040] Through the above solution, auxiliary information is sent to the network device. The auxiliary information is used to instruct the network device to determine the number of retransmissions of the first downlink access information based on the auxiliary information. The first downlink access information includes at least one of: contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Thus, the terminal reports the auxiliary information to assist the network device in determining the number of retransmissions of the downlink access information, thereby improving the downlink coverage performance of the network device.

[0041] In combination with some embodiments of the first aspect, the first downlink access information is applicable to a terrestrial network TN cell or a non-terrestrial network NTN cell.

[0042] In combination with some embodiments of the first aspect, the terminal includes an idle state terminal, an inactive state terminal, or a connected state terminal.

[0043] In combination with some embodiments of the first aspect, the number of retransmissions includes the number of physical downlink control channel PDCCH retransmissions and / or the number of physical downlink shared channel PDSCH retransmissions.

[0044] In conjunction with some embodiments of the first aspect, the auxiliary information includes at least one of the following:

[0045] First information, where the first information is used to indicate downlink signal quality of the terminal;

[0046] Recommended number of retransmissions;

[0047] Capability information, where the capability information is used to indicate whether the terminal supports retransmission of the first downlink access information.

[0048] In combination with some embodiments of the first aspect, the downlink signal quality includes a channel quality indication CQI or a reference signal received power RSRP.

[0049] In combination with some embodiments of the first aspect, the first downlink access information includes the Msg2 and the Msg4, and the recommended number of retransmissions includes a first number of retransmissions of the Msg2 and a second number of retransmissions of the Msg4.

[0050] In conjunction with some embodiments of the first aspect, the auxiliary information includes the first information, and sending the auxiliary information to the network device includes:

[0051] determining the first information;

[0052] Determine that the first information is lower than a first threshold value and the terminal supports retransmission of the first downlink access information, and send the auxiliary information to the network device.

[0053] In conjunction with some embodiments of the first aspect, the sending the auxiliary information to the network device includes:

[0054] determining the first information;

[0055] Determining a first reporting value corresponding to the first information;

[0056] The auxiliary information is sent to the network device, where the auxiliary information includes the first reported value.

[0057] With reference to some embodiments of the first aspect, determining a first reporting value corresponding to the first information includes:

[0058] Determine a first index value of a value interval in which the first information is located;

[0059] Determine the first index value as the reported value.

[0060] In conjunction with some embodiments of the first aspect, determining the first index value of the value interval in which the first information is located includes:

[0061] receiving first configuration information sent by the network device, where the first configuration information is used to indicate a mapping relationship between first information and a first index value;

[0062] Determine the first index value according to the first configuration information and the first information.

[0063] In conjunction with some embodiments of the first aspect, determining the first index value of the value interval in which the first information is located includes:

[0064] Determine the first index value according to the protocol and the first information;

[0065] The protocol stipulates a mapping relationship between the first information and the first index value.

[0066] In conjunction with some embodiments of the first aspect, the sending the auxiliary information to the network device includes:

[0067] determining the first information;

[0068] A mapping relationship between the first information and the first index value does not exist, and the auxiliary information is sent to the network device, wherein the auxiliary information does not include the downlink signal quality, and the first index value is an index of the value range in which the first information is located.

[0069] In conjunction with some embodiments of the first aspect, the sending the auxiliary information to the network device includes:

[0070] determining the first information;

[0071] determining a recommended number of retransmissions of the first information;

[0072] Determining a second reported value corresponding to the recommended number of retransmissions;

[0073] The auxiliary information is sent to the network device, where the auxiliary information includes the second reported value.

[0074] In conjunction with some embodiments of the first aspect, determining the second reported value corresponding to the recommended number of retransmissions includes:

[0075] receiving second configuration information sent by the network device, where the second configuration information is used to indicate a mapping relationship between a recommended number of retransmissions and a second reported value;

[0076] Determine the second reporting value according to the second configuration information and the recommended number of retransmissions.

[0077] In conjunction with some embodiments of the first aspect, determining the second reported value corresponding to the recommended number of retransmissions includes:

[0078] Determining the second reporting value according to the protocol and the recommended number of retransmissions;

[0079] The protocol stipulates a mapping relationship between the recommended number of retransmissions and the second reported value.

[0080] In conjunction with some embodiments of the first aspect, determining the second reported value corresponding to the recommended number of retransmissions includes:

[0081] Determine a mapping relationship between a plurality of recommended retransmission times and a plurality of second reported values;

[0082] The second reporting value is determined according to the mapping relationship and the recommended number of retransmissions.

[0083] In conjunction with some embodiments of the first aspect, the sending the auxiliary information to the network device includes:

[0084] determining the first information;

[0085] determining, based on the first information, a recommended number of retransmissions of the first downlink access information;

[0086] Determine that a mapping relationship between the recommended number of retransmissions and the second reported value does not exist, and send the auxiliary information to the network device, wherein the auxiliary information does not include the recommended number of retransmissions, and the second reported value is an index of the value range of the recommended number of retransmissions.

[0087] In conjunction with some embodiments of the first aspect, the sending the auxiliary information to the network device includes:

[0088] The auxiliary information is sent to the network device through a contention-based random access request message Msg1 or a non-contention-based random access request message MsgA.

[0089] In conjunction with some embodiments of the first aspect, the sending the auxiliary information to the network device includes:

[0090] Determining a first physical random access channel PRACH resource according to the first reported value;

[0091] The auxiliary information is sent to the network device through the first PRACH resource.

[0092] In conjunction with some embodiments of the first aspect, the sending the auxiliary information to the network device includes:

[0093] Determining a first physical random access channel PRACH resource according to the second reported value;

[0094] The auxiliary information is sent to the network device through the first PRACH resource.

[0095] In combination with some embodiments of the first aspect, the first downlink access information includes the Msg4, and the sending the auxiliary information to the network device includes:

[0096] The auxiliary information is sent to the network device via the connection request message Msg3, and the auxiliary information is used to instruct the network device to determine the number of retransmissions of the Msg4 according to the auxiliary information.

[0097] In combination with some embodiments of the first aspect, sending the auxiliary information to the network device through the connection request message Msg3 includes:

[0098] The Msg3 is sent to the network device, where the Msg3 includes MAC element information, and the MAC element information is used to indicate a first reporting value.

[0099] In conjunction with some embodiments of the first aspect, the sending the auxiliary information to the network device includes:

[0100] Sending RRC information to the network device, where the RRC information includes the auxiliary information.

[0101] In conjunction with some embodiments of the first aspect, the method further includes:

[0102] Receive third configuration information sent by the network device, where the third configuration information is used to indicate whether the network device supports the terminal to send the auxiliary information.

[0103] In conjunction with some embodiments of the first aspect, the method further includes:

[0104] receiving trigger threshold configuration information sent by the network device;

[0105] The auxiliary information is generated according to the trigger threshold configuration information.

[0106] In conjunction with some embodiments of the first aspect, the trigger threshold configuration information includes a downlink signal quality threshold, and the sending of auxiliary information to the network device includes:

[0107] receiving trigger threshold configuration information sent by the network device, wherein the trigger threshold configuration information includes a downlink signal quality threshold;

[0108] Determine that the downlink signal quality in the terminal is less than the downlink signal quality threshold, and send the auxiliary information to the network device through Msg1, Msg3 or MsgA of a random access channel RACH.

[0109] In conjunction with some embodiments of the first aspect, the method further includes:

[0110] Receive fourth configuration information sent by the network device, where the fourth configuration information is used to indicate a mapping relationship between multiple trigger threshold configurations and multiple recommended retransmission times.

[0111] In conjunction with some embodiments of the first aspect, the auxiliary information includes a recommended number of retransmissions, and sending the auxiliary information to the network device includes:

[0112] Determining a downlink signal quality of the terminal;

[0113] Determining the recommended number of retransmissions according to the downlink signal quality and the fourth configuration information;

[0114] Sending the recommended number of retransmissions to the network device.

[0115] In conjunction with some embodiments of the first aspect, the method further includes:

[0116] receiving scheduling information sent by the network device, where the scheduling information is used to schedule the first downlink access information;

[0117] Determine the number of retransmissions of the first downlink access information according to the scheduling information.

[0118] In conjunction with some embodiments of the first aspect, the method further includes:

[0119] Fifth configuration information sent by the network device is received, where the fifth configuration information is used to indicate a number of retransmissions of the first downlink access information supported by the network device.

[0120] In a second aspect, an embodiment of the present disclosure provides a communication method, which is performed by a network device. The method includes:

[0121] receiving auxiliary information sent by the terminal;

[0122] Determine the number of retransmissions of first downlink access information according to the auxiliary information, wherein the first downlink access information includes at least one of: contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

[0123] In combination with some embodiments of the second aspect, the number of retransmissions includes the number of physical downlink control channel PDCCH retransmissions and / or the number of physical downlink shared channel PDSCH retransmissions.

[0124] In conjunction with some embodiments of the second aspect, the auxiliary information includes at least one of the following:

[0125] First information, where the first information is used to indicate downlink signal quality of the terminal;

[0126] Recommended number of retransmissions;

[0127] Capability information, where the capability information is used to indicate whether the terminal supports retransmission of the first downlink access information.

[0128] In combination with some embodiments of the second aspect, the downlink signal quality includes a channel quality indication CQI or a reference signal received power RSRP.

[0129] In conjunction with some embodiments of the second aspect, the method further includes:

[0130] Sending first configuration information to the terminal, where the first configuration information is used to indicate a mapping relationship between first information and a first index value.

[0131] In conjunction with some embodiments of the second aspect, the method further includes:

[0132] Second configuration information is sent to the terminal, where the second configuration information is used to indicate a mapping relationship between the recommended number of retransmissions and a second reported value.

[0133] In conjunction with some embodiments of the second aspect, the method further includes:

[0134] Sending third configuration information to the terminal, where the third configuration information is used to indicate whether the network device supports the terminal to send the auxiliary information.

[0135] In conjunction with some embodiments of the second aspect, the method further includes:

[0136] Sending trigger threshold configuration information to the terminal, where the trigger threshold configuration information is used to instruct the terminal to generate the auxiliary information according to the trigger threshold configuration information.

[0137] In conjunction with some embodiments of the second aspect, the method further includes:

[0138] Send fourth configuration information, where the fourth configuration information is used to indicate a mapping relationship between multiple trigger threshold configurations and multiple recommended retransmission times.

[0139] In conjunction with some embodiments of the second aspect, the method further includes:

[0140] Sending scheduling information to the terminal, where the scheduling information is used to schedule the first downlink access information, and the scheduling information is used to instruct the terminal to determine the number of retransmissions of the first downlink access information according to the scheduling information.

[0141] In conjunction with some embodiments of the second aspect, the method further includes:

[0142] Send fifth configuration information to the terminal, where the fifth configuration information is used to indicate the number of retransmissions of the first downlink access information supported by the network device.

[0143] In a third aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0144] The terminal sends auxiliary information to the network device;

[0145] The network device determines the number of retransmissions of first downlink access information according to the auxiliary information, wherein the first downlink access information includes at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

[0146] In a fourth aspect, an embodiment of the present disclosure provides a terminal, including:

[0147] The first transceiver module is configured to send auxiliary information to the network device, where the auxiliary information is used to instruct the network device to determine the number of retransmissions of first downlink access information based on the auxiliary information, wherein the first downlink access information includes: at least one of: contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

[0148] In a fifth aspect, an embodiment of the present disclosure provides a network device, including:

[0149] A second transceiver module is configured to receive auxiliary information sent by the terminal;

[0150] The first processing module is configured to determine the number of retransmissions of first downlink access information according to the auxiliary information, wherein the first downlink access information includes: at least one of: contention random access response information Msg2, contention resolution information Msg4 and non-contention random access response information MsgB.

[0151] In a sixth aspect, an embodiment of the present disclosure provides a terminal, including:

[0152] one or more processors;

[0153] The terminal is used to execute the communication method described in any one of the first aspects of this disclosure.

[0154] In a seventh aspect, an embodiment of the present disclosure provides a network device, including:

[0155] one or more processors;

[0156] The network device is used to execute the communication method described in any one of the second aspects of this disclosure.

[0157] In an eighth aspect, an embodiment of the present disclosure provides a communication system, comprising a terminal and a network device, wherein the terminal is configured to implement the communication method described in any one of the first aspects of the present disclosure, and the network device is configured to implement the communication method described in any one of the second aspects of the present disclosure.

[0158] In the ninth aspect, an embodiment of the present disclosure provides a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method as described in any one of the first aspects of the present disclosure, or the communication device executes the communication method as described in any one of the second aspects of the present disclosure.

[0159] In the above manner, the terminal sends auxiliary information to the network device. The auxiliary information is used to instruct the network device to determine the number of retransmissions of the first downlink access information based on the auxiliary information. The first downlink access information includes at least one of: contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Thus, the terminal reports the auxiliary information to assist the network device in determining the number of retransmissions of the downlink access information, thereby improving the downlink coverage performance of the network device.

[0160] The present disclosure provides a communication method, terminal, network device, system, and storage medium. In some embodiments, the terms "communication method," "information processing method," and "communication method" are interchangeable; the terms "communication device," "information processing device," and "communication device" are interchangeable; and the terms "information processing system," "communication system," and "communication system" are interchangeable.

[0161] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0162] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0163] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0164] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0165] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0166] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0167] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0168] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0169] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0170] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0171] In some embodiments, terms such as "time / frequency" and "time / frequency domain" refer to the time domain and / or the frequency domain.

[0172] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0173] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0174] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0175] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0176] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0177] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0178] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0179] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0180] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0181] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0182] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0183] FIG1 is a schematic diagram illustrating the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 .

[0184] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0185] In some embodiments, the network device 102 is, for example, a node or device that accesses the terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0186] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0187] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0188] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0189] In some embodiments, in the related art, in order to improve the downlink coverage of Msg2 / Msg4 / MsgB during random access, the downlink coverage performance can be improved by repeatedly sending Msg2 / Msg4 / MsgB. In order to facilitate the network to determine the number of repeated transmissions of Msg2 / Msg4 / MsgB, the terminal needs to report auxiliary information to assist the network in determining the number of repeated transmissions of Msg2 / Msg4 / MsgB during the communication process.

[0190] Figure 2 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2, the embodiment of the present disclosure relates to a communication method, which is executed by a terminal and a network device. The method includes:

[0191] Step S2101: The terminal sends auxiliary information.

[0192] In some embodiments, the auxiliary information is used to instruct the network device to determine the number of retransmissions of the first downlink access information based on the auxiliary information, wherein the first downlink access information includes: at least one of: contention random access response information Msg2, contention resolution information Msg4 and non-contention random access response information MsgB.

[0193] In some embodiments, the network device receives the auxiliary information and determines the number of retransmissions of the first downlink access information according to the auxiliary information.

[0194] In some embodiments, the auxiliary information may also be referred to as "indication information", "retransmission information", "auxiliary retransmission information", "retransmission indication information", "access retransmission information" or other names, which are not limited in this embodiment.

[0195] For example, in this embodiment, the auxiliary information is applicable to the contention random access process or the non-contention random access process of the terminal. When the terminal needs to access the network communication system, the auxiliary information is used to assist the network device in determining the number of retransmissions of the first downlink access information, wherein the first downlink access information includes at least one of Msg2, Msg4 and MsgB.

[0196] In some embodiments, the first downlink access information is applicable to a terrestrial network TN cell or a non-terrestrial network NTN cell. For example, in this embodiment, the communication system formed by the terminal and the network device may be a TN communication system, and the corresponding first downlink access information is applicable to the TN cell; the communication system formed by the terminal and the network device may also be an NTN communication system, and the corresponding first downlink access information is applicable to the NTN cell.

[0197] In some embodiments, the number of retransmissions includes the number of physical downlink control channel (PDCCH) retransmissions and / or the number of physical downlink shared channel (PDSCH) retransmissions. For example, in this embodiment, the number of retransmissions of the first downlink access information includes the number of first downlink access information (PDCCH) retransmissions and / or the number of first downlink access information (PDSCH) retransmissions.

[0198] In some embodiments, the terminal includes an idle state terminal, an inactive state terminal, or a connected state terminal. For example, the terminal in this embodiment can be any of an idle state terminal, an inactive state terminal, and a connected state terminal. That is, the terminal in this embodiment is a terminal device in any state.

[0199] In some embodiments, the auxiliary information includes at least one of the following:

[0200] First information, the first information is used to indicate the downlink signal quality of the terminal;

[0201] Recommended number of retransmissions;

[0202] Capability information, where the capability information is used to indicate whether the terminal supports retransmission of the first downlink access information.

[0203] For example, in this embodiment, the auxiliary information reported by the terminal may be at least one of downlink signal quality, a recommended number of retransmissions of the first downlink access information, and capability information corresponding to the terminal, wherein the capability information is used to indicate whether the terminal supports retransmission of the first downlink access information during communication.

[0204] In some embodiments, the downlink signal quality includes a channel quality indicator (CQI) or a reference signal received power (RSRP). For example, in this embodiment, the downlink signal quality of the terminal can be indicated by CQI information or RSRP information.

[0205] In some embodiments, the first downlink access information includes Msg2 and Msg4, and the recommended number of retransmissions includes a first number of retransmissions of Msg2 and a second number of retransmissions of Msg4. For example, in this embodiment, the first downlink access information includes Msg2 and Msg4, and the recommended number of retransmissions includes the first number of retransmissions of Msg2 and the second number of retransmissions of Msg4. That is, in this application, when the auxiliary information includes the recommended number of retransmissions, the retransmission numbers of Msg2 and Msg4 can be reported separately, where the first number of retransmissions and the second number of retransmissions can be the same or different.

[0206] In some embodiments, the above step S2101 includes:

[0207] determining first information;

[0208] It is determined that the first information is lower than the first threshold and the terminal supports retransmission of the first downlink access information, and the auxiliary information is sent to the network device.

[0209] For example, in this embodiment, the first information corresponds to a first threshold value of the downlink signal quality in the terminal. The terminal monitors the downlink signal quality in real time. When it is determined that the downlink signal quality is lower than the first threshold value and the terminal supports retransmission of the first downlink access signal, the terminal sends the auxiliary information to the network device.

[0210] In some embodiments, the above step S2101 includes:

[0211] determining first information;

[0212] Determining a first reported value corresponding to the first information;

[0213] Auxiliary information is sent to the network device, where the auxiliary information includes a first reported value.

[0214] For example, in this embodiment, the auxiliary information includes a first reporting value corresponding to the downlink signal quality in the first information, and the downlink signal quality in the terminal is sent to the network device through the reporting value. The terminal is configured with a mapping relationship between multiple downlink signal qualities and multiple first reporting values, and the corresponding first reporting value is determined according to the downlink signal quality. The first reporting value is carried in the auxiliary information, and the network device determines the downlink signal quality of the terminal based on the first reporting value in the auxiliary information. In this embodiment, the bit value corresponding to the downlink signal quality is large, occupies a large number of bits during the communication transmission process, and is easily distorted. Therefore, an operational relationship between the downlink signal quality and the reporting value can be established in the communication system, and the downlink signal quality is converted into a corresponding index value, and the index value is reported through the auxiliary information. The network device determines the downlink signal quality corresponding to the index value based on the mapping relationship, and determines the number of retransmissions of the first downlink access information according to the downlink signal quality.

[0215] In some embodiments, the above step S2101 includes:

[0216] Determine a first index value of a value interval in which the first information is located;

[0217] Determine the first index value as the first reporting value.

[0218] For example, in this embodiment, the downlink signal quality corresponding to the current first information of the terminal is determined. The downlink signal quality is mapped to multiple value intervals in the terminal, and the value intervals are numbered. Multiple index values ​​are used to represent the value intervals corresponding to different downlink signal qualities. The first index value of the value interval in which the downlink signal quality is located is determined according to the mapping relationship, and the first index value is reported through auxiliary information. For example, the downlink signal quality is mapped to the interval range of [<-5], [-5, 0], [0, 5], [5, 10], [>10], and each value interval corresponds to 5 index values ​​a, b, c, d, e, respectively. The index value of the value interval corresponding to the current downlink signal quality is determined, and the index value is reported to the network device.

[0219] In some embodiments, the above step of “determining a first reported value corresponding to the downlink signal quality” includes:

[0220] receiving first configuration information sent by the network device, where the first configuration information is used to indicate a mapping relationship between the first information and the first reported value;

[0221] A first reporting value is determined according to the first configuration information and the first information.

[0222] For example, in this embodiment, the first configuration information sent by the network device indicates the mapping relationship between the downlink signal quality in the first information and the first reporting value. The terminal can determine the first reporting value matching the downlink signal quality corresponding to the first information from the first configuration information.

[0223] In some embodiments, the above step of “determining the first index value of the value interval in which the first information is located” includes:

[0224] Determine a first index value according to the protocol and the first information;

[0225] The protocol stipulates a mapping relationship between the first information and the first index value.

[0226] For example, in this embodiment, the mapping relationship between multiple downlink signal qualities and multiple first reporting values ​​is indicated by first protocol information between the terminal and the network device, and the terminal determines the first reporting value according to the first protocol information and the downlink signal quality.

[0227] In some embodiments, the step of “sending auxiliary information to the network device” includes:

[0228] determining downlink signal quality in the terminal;

[0229] It is determined that the downlink signal quality does not match the mapping relationship, and auxiliary information is sent to the network device, wherein the auxiliary information does not include the downlink signal quality, and the mapping relationship is a correspondence between multiple downlink signal qualities and multiple first reported values.

[0230] For example, in this embodiment, a mapping relationship between multiple downlink signal qualities and multiple first reporting values ​​is determined. When the downlink signal quality detected by the terminal is not any of the multiple downlink signal qualities, the downlink signal quality is not reported in the auxiliary information. In other words, if the current downlink signal quality is not within the value range specified by any configuration information or protocol, the downlink signal quality is not reported. For example, in some embodiments, if the downlink signal quality is not within the specified value range, the recommended number of retransmissions of the first downlink access information is not reported.

[0231] In some embodiments, the above step S2101 includes:

[0232] determining first information;

[0233] a recommended number of retransmissions according to the first information;

[0234] Determining a second reported value corresponding to the recommended number of retransmissions;

[0235] Auxiliary information is sent to the network device, where the auxiliary information includes the second reported value.

[0236] For example, this embodiment configures a mapping relationship between the recommended number of retransmissions and the second reported value in the terminal. The terminal determines the recommended number of retransmissions of the first downlink access information based on the current downlink signal quality. The second reported value corresponding to the recommended number of retransmissions is determined based on the mapping relationship, and the second reported value is reported to the network device. The network device determines the corresponding recommended number of retransmissions based on the second reported value and the mapping relationship. Similar to the above-mentioned solution, in order to improve the portability and clarity of the auxiliary information, the recommended number of retransmissions is mapped to the second reported value, and the corresponding recommended number of retransmissions is represented by reporting the second reported value.

[0237] In some embodiments, the above-mentioned “determining a second reported value corresponding to the recommended number of retransmissions” includes:

[0238] receiving second configuration information sent by the network device, where the second configuration information is used to indicate a mapping relationship between a recommended number of retransmissions and a second reported value;

[0239] A second reporting value is determined according to the second configuration information and the recommended number of retransmissions.

[0240] For example, in this embodiment, the network device sends second configuration information to indicate a mapping relationship between multiple recommended retransmission times and multiple second reported values, and the second reported value corresponding to the recommended retransmission times is determined based on the second configuration information. The method for determining the second reported value based on the second configuration information in this embodiment is the same as the method for determining the first reported value based on the first configuration information in the above embodiment. Reference can be made to the above embodiment and will not be repeated here.

[0241] In some embodiments, the above-mentioned “determining a second reported value corresponding to the recommended number of retransmissions” includes:

[0242] Determine the second reporting value according to the protocol and the recommended number of retransmissions;

[0243] The protocol stipulates the mapping relationship between the recommended number of retransmissions and the second reported value.

[0244] For example, in this embodiment, according to the mapping relationship between the recommended number of retransmissions and the second reported value indicated by the protocol information, the terminal may determine the second reported value corresponding to the recommended number of retransmissions according to the protocol information.

[0245] In some embodiments, the above-mentioned “determining a second reported value corresponding to the recommended number of retransmissions” includes:

[0246] Determine a mapping relationship between a plurality of recommended retransmission times and a plurality of second reported values;

[0247] A second reporting value is determined according to the mapping relationship and the recommended number of retransmissions.

[0248] For example, in this embodiment, the terminal may also independently determine a mapping relationship between multiple recommended retransmission times and multiple second reporting values, and determine the second reporting value corresponding to the current recommended retransmission time according to the mapping relationship.

[0249] In some embodiments, the above step S2101 includes:

[0250] determining first information;

[0251] Determining, based on the first information, a recommended number of retransmissions of the first downlink access information;

[0252] Determine that a mapping relationship between the recommended number of retransmissions and the second reported value does not exist, and send the auxiliary information to the network device, wherein the auxiliary information does not include the recommended number of retransmissions, and the second reported value is an index of the value range of the recommended number of retransmissions.

[0253] For example, the value range corresponding to the downlink signal quality in this embodiment is the same as that in the above embodiment. If the recommended number of retransmissions determined by the terminal based on the downlink signal quality is no longer within the value range of the specified number of retransmissions, then when sending auxiliary information, the current recommended number of retransmissions of the terminal will no longer be reported in the auxiliary information.

[0254] In some embodiments, the above step S2101 includes:

[0255] The auxiliary information is sent to the network device through the contention random access request message Msg1 or the non-contention random access request message MsgA.

[0256] For example, in this embodiment, if the random access process of the terminal is a contention random access process, the auxiliary information can be carried in the Msg1 information and reported to the network device; if the random access process of the terminal is a non-contention random access process, the auxiliary information is carried in the MsgA information to the network device.

[0257] In some embodiments, the above step S2101 includes:

[0258] Determining a first physical random access channel PRACH resource according to the first reported value;

[0259] The auxiliary information is sent to the network device via the first PRACH resource.

[0260] For example, in this embodiment, a mapping relationship between a first reporting value and a PRACH resource can be established in the communication system, and the auxiliary information can be sent through the corresponding PRACH resource. The network device can determine the corresponding first reporting value based on the PRACH resource corresponding to the received auxiliary information.

[0261] In some embodiments, the above step S2101 includes:

[0262] Determining a first physical random access channel PRACH resource according to the second reported value;

[0263] The auxiliary information is sent to the network device via the first PRACH resource.

[0264] For example, in this embodiment, a mapping relationship between a second reporting value and a PRACH resource can be established in the communication system, and the auxiliary information can be sent through the corresponding PRACH resource. The network device can determine the corresponding second reporting value based on the PRACH resource corresponding to the received auxiliary information.

[0265] In some embodiments, the first downlink access information includes Msg4, and the above step S2101 includes:

[0266] Auxiliary information is sent to the network device through the connection request message Msg3, and the auxiliary information is used to instruct the network device to determine the number of retransmissions of Msg4 according to the auxiliary information.

[0267] For example, in this embodiment, the auxiliary information is reported through Msg3, and the auxiliary information is used to instruct the network device to determine the number of retransmissions of Msg4 according to the auxiliary information.

[0268] In some embodiments, the above step of "passing the connection request message Msg3" includes:

[0269] Send Msg3 to the network device, where Msg3 includes MAC element information, and the MAC element information is used to indicate the first reported value.

[0270] For example, in this embodiment, the first reporting value corresponding to the downlink signal quality can be indicated by the MAC element information carried in Msg3.

[0271] In some embodiments, the above step S2101 includes:

[0272] Send RRC information to the network device, where the RRC information includes auxiliary information.

[0273] For example, the auxiliary information may be reported to the network device via RRC information, where the RRC information includes UE capability reporting information, UE auxiliary information, and the like.

[0274] In some embodiments, before step S2101, the method further includes:

[0275] Receive third configuration information sent by the network device, where the third configuration information is used to indicate whether the network device supports the terminal to send auxiliary information.

[0276] For example, before the terminal reports the auxiliary information, the network device first indicates through the third configuration information whether the network device supports the terminal to send the auxiliary information. When the terminal determines that the network device supports the terminal to send the auxiliary information according to the third configuration information, the terminal reports the auxiliary information.

[0277] In some embodiments, the method further comprises:

[0278] Receive trigger threshold configuration information sent by the network device;

[0279] Generate auxiliary information according to the trigger threshold configuration information.

[0280] For example, a network device sends trigger threshold configuration information, and the terminal can determine whether to generate auxiliary information based on the trigger threshold configuration information. The trigger threshold configuration information is used to indicate the threshold value for triggering the reporting of auxiliary information in the terminal. The trigger threshold can be a threshold value of the downlink signal quality. When the downlink signal quality is lower than the trigger threshold, the terminal generates auxiliary information based on the downlink signal quality.

[0281] In some embodiments, the trigger threshold configuration information includes a downlink signal quality threshold. Step S2101 includes:

[0282] It is determined that the downlink signal quality in the terminal is less than the downlink signal quality threshold, and auxiliary information is sent to the network device through Msg1, Msg3 or MsgA of the random access channel RACH.

[0283] For example, when the terminal determines that the downlink signal quality is less than the downlink signal quality threshold, the terminal sends the auxiliary information to the network device through Msg1, Msg3 and / or MsgA in the RACH resource.

[0284] In some embodiments, the method further comprises:

[0285] Receive fourth configuration information sent by the network device, where the fourth configuration information is used to indicate a mapping relationship between multiple trigger threshold configurations and multiple recommended retransmission times.

[0286] For example, the network device sends configuration information to configure a mapping relationship between multiple trigger threshold configurations and multiple recommended retransmission times. The terminal determines the corresponding recommended retransmission times based on the trigger threshold of the current downlink signal quality and reports the recommended retransmission times.

[0287] In some embodiments, the auxiliary information includes a recommended number of retransmissions. Step S2101 includes:

[0288] Determine the downlink signal quality of the terminal;

[0289] Determining a recommended number of retransmissions based on the downlink signal quality and the fourth configuration information;

[0290] Sends the recommended number of retransmissions to the network device.

[0291] For example, the terminal determines the current downlink signal quality, determines the recommended number of retransmissions based on the downlink signal quality and the fourth configuration information configured by the network device in the above embodiment, and sends the recommended number of retransmissions to the network device.

[0292] Step S2102: The network device determines the number of retransmissions of the first downlink access information according to the auxiliary information.

[0293] For example, after receiving the auxiliary information sent by the terminal, the network device determines the number of retransmissions of the first downlink access information based on the auxiliary information. In this embodiment, the network device can determine the coverage performance of the first downlink access information in the terminal based on the auxiliary information. If the coverage performance is determined to be poor based on the auxiliary information, a larger number of retransmissions is used to ensure the access coverage performance of the downlink access information of the terminal.

[0294] In some embodiments, after step S2102, the method further includes:

[0295] The terminal receives scheduling information sent by the network device, where the scheduling information is used to schedule the first downlink access information;

[0296] The terminal determines the number of retransmissions of the first downlink access information according to the scheduling information.

[0297] For example, after determining the number of retransmissions of the first downlink access information, the network device indicates the number of retransmissions to the terminal via scheduling information, wherein the scheduling information can be used to schedule the first downlink access information.

[0298] In some embodiments, before step S2101, the method further includes:

[0299] Fifth configuration information sent by the network device is received, where the fifth configuration information is used to indicate a number of retransmissions of the first downlink access information supported by the network device.

[0300] For example, before the terminal reports the auxiliary information, it receives the fifth configuration information sent by the network device, where the fifth configuration information is used to indicate the number of retransmissions of the first downlink access information supported in the network device, that is, the fifth configuration information is used to indicate to the terminal the retransmission capability of the first downlink access information supported in the network device.

[0301] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0302] In some embodiments, the terms "codebook," "codeword," and "precoding matrix" may be used interchangeably. For example, a codebook may be a collection of one or more codewords / precoding matrices.

[0303] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0304] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0305] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0306] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0307] In some embodiments, terms such as "synchronization signal (SS)", "synchronization signal block (SSB)", "reference signal (RS)", "pilot", and "pilot signal" can be used interchangeably.

[0308] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0309] In some embodiments, the terms "component carrier (CC)", "cell", "frequency carrier", "carrier frequency" and the like can be used interchangeably.

[0310] In some embodiments, terms such as "resource block (RB)", "physical resource block (PRB)", "sub-carrier group (SCG)", "resource element group (REG)", "PRB pair", "RB pair", "resource element (RE)", and "sub-carrier" can be used interchangeably.

[0311] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0312] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0313] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0314] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0315] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0316] In the above technical solution, the terminal sends auxiliary information to the network device. The auxiliary information is used to instruct the network device to determine the number of retransmissions of the first downlink access information based on the auxiliary information. The first downlink access information includes at least one of: contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Thus, the terminal reports the auxiliary information to assist the network device in determining the number of retransmissions of the downlink access information, thereby improving the downlink coverage performance of the network device.

[0317] FIG3 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3 , the embodiment of the present disclosure relates to a communication method, which is executed by a terminal. The method includes:

[0318] Step S3101: Send auxiliary information to the network device.

[0319] In some embodiments, the auxiliary information is used to instruct the network device to determine the number of retransmissions of the first downlink access information based on the auxiliary information, wherein the first downlink access information includes: at least one of: contention random access response information Msg2, contention resolution information Msg4 and non-contention random access response information MsgB.

[0320] In some embodiments, the first downlink access information is applicable to a terrestrial network TN cell or a non-terrestrial network NTN cell.

[0321] In some embodiments, the terminal includes an idle state terminal, an inactive state terminal, or a connected state terminal.

[0322] In some embodiments, the number of retransmissions includes the number of physical downlink control channel PDCCH retransmissions and / or the number of physical downlink shared channel PDSCH retransmissions.

[0323] In some embodiments, the auxiliary information includes at least one of the following:

[0324] First information, the first information is used to indicate the downlink signal quality of the terminal;

[0325] Recommended number of retransmissions;

[0326] Capability information, where the capability information is used to indicate whether the terminal supports retransmission of the first downlink access information.

[0327] In some embodiments, the downlink signal quality includes a channel quality indicator CQI or a reference signal received power RSRP.

[0328] In some embodiments, the first downlink access information includes Msg2 and Msg4, and the recommended retransmission times include a first retransmission time of Msg2 and a second retransmission time of Msg4.

[0329] In some embodiments, the auxiliary information includes the first information, and the above step S3101 includes:

[0330] Determine the downlink signal quality of the terminal;

[0331] It is determined that the downlink signal quality is lower than the first threshold and the terminal supports retransmission of the first downlink access information, and the auxiliary information is sent to the network device.

[0332] In some embodiments, the above step S3101 includes:

[0333] determining first information;

[0334] It is determined that the first information is lower than the first threshold and the terminal supports retransmission of the first downlink access information, and the auxiliary information is sent to the network device.

[0335] In some embodiments, the above step S3101 includes:

[0336] determining first information;

[0337] Determining a first reported value corresponding to the first information;

[0338] Auxiliary information is sent to the network device, where the auxiliary information includes a first reported value.

[0339] In some embodiments, the above step of “determining the first reported value corresponding to the first information” includes:

[0340] Determine a first index value of a value interval in which the first information is located;

[0341] Determine the first index value as the reporting value.

[0342] In some embodiments, the above step of “determining the first index value of the value interval in which the first information is located” includes:

[0343] Receive first configuration information sent by the network device, where the first configuration information is used to indicate a mapping relationship between the first information and the first index value;

[0344] A first index value is determined according to the first configuration information and the first information.

[0345] In some embodiments, the above step of “determining the first index value of the value interval in which the first information is located” includes:

[0346] determining first information;

[0347] A mapping relationship between the first information and the first index value does not exist, and auxiliary information is sent to the network device, wherein the auxiliary information does not include downlink signal quality, and the first index value is an index of the value range where the first information is located.

[0348] In some embodiments, the above step S3101 includes:

[0349] determining first information;

[0350] determining a recommended number of retransmissions of the first information;

[0351] Determining a second reported value corresponding to the recommended number of retransmissions;

[0352] Auxiliary information is sent to the network device, where the auxiliary information includes the second reported value.

[0353] In some embodiments, the step of "determining a second reported value corresponding to the recommended number of retransmissions" includes:

[0354] receiving second configuration information sent by the network device, where the second configuration information is used to indicate a mapping relationship between a plurality of recommended retransmission times and a plurality of second reporting values;

[0355] A second reporting value is determined according to the second configuration information and the recommended number of retransmissions.

[0356] In some embodiments, the step of "determining a second reported value corresponding to the recommended number of retransmissions" includes:

[0357] Determine the second reporting value according to the protocol and the recommended number of retransmissions;

[0358] The protocol stipulates the mapping relationship between the recommended number of retransmissions and the second reported value.

[0359] In some embodiments, the step of "determining a second reported value corresponding to the recommended number of retransmissions" includes:

[0360] Determine a mapping relationship between a plurality of recommended retransmission times and a plurality of second reported values;

[0361] A second reporting value is determined according to the mapping relationship and the recommended number of retransmissions.

[0362] In some embodiments, the above step S3101 includes:

[0363] determining first information;

[0364] Determining, based on the first information, a recommended number of retransmissions of the first downlink access information;

[0365] Determine that a mapping relationship between the recommended number of retransmissions and the second reported value does not exist, and send auxiliary information to the network device, wherein the auxiliary information does not include the recommended number of retransmissions, and the second reported value is an index of the value range of the recommended number of retransmissions.

[0366] In some embodiments, the above step S3101 includes:

[0367] The auxiliary information is sent to the network device through the contention random access request message Msg1 or the non-contention random access request message MsgA.

[0368] In some embodiments, the above step S3101 includes:

[0369] Determining a first physical random access channel PRACH resource according to the first reported value;

[0370] The auxiliary information is sent to the network device via the first PRACH resource.

[0371] In some embodiments, the above step S3101 includes:

[0372] Determining a first physical random access channel PRACH resource according to the second reported value;

[0373] The auxiliary information is sent to the network device via the first PRACH resource.

[0374] In some embodiments, the first downlink access information includes Msg4, and the above step S3101 includes:

[0375] The auxiliary information is sent to the network device via the connection request message Msg3, where the auxiliary information is used to instruct the network device to determine the number of retransmissions of Msg4 according to the auxiliary information.

[0376] In some embodiments, through the connection request message Msg3, the above step S3101 includes:

[0377] Send Msg3 to the network device, where Msg3 includes MAC element information, and the MAC element information is used to indicate the first reported value.

[0378] In some embodiments, the above step S3101 includes:

[0379] Send RRC information to the network device, where the RRC information includes auxiliary information.

[0380] In some embodiments, the method further comprises:

[0381] Receive third configuration information sent by the network device, where the third configuration information is used to indicate whether the network device supports the terminal to send auxiliary information.

[0382] In some embodiments, the method further comprises:

[0383] Receiving trigger threshold configuration information sent by the network device;

[0384] Generate auxiliary information according to the trigger threshold configuration information.

[0385] In some embodiments, the trigger threshold configuration information includes a downlink signal quality threshold. Step S3101 includes:

[0386] It is determined that the downlink signal quality in the terminal is less than the downlink signal quality threshold, and auxiliary information is sent to the network device through Msg1, Msg3 or MsgA of the random access channel RACH.

[0387] In some embodiments, the method further comprises:

[0388] Receive fourth configuration information sent by the network device, where the fourth configuration information is used to indicate a mapping relationship between multiple trigger threshold configurations and multiple recommended retransmission times.

[0389] In some embodiments, the auxiliary information includes a recommended number of retransmissions. Step S3101 includes:

[0390] Determine the downlink signal quality of the terminal;

[0391] Determining a recommended number of retransmissions based on the downlink signal quality and the fourth configuration information;

[0392] Sends the recommended number of retransmissions to the network device.

[0393] In some embodiments, the method further comprises:

[0394] receiving scheduling information sent by a network device, where the scheduling information is used to schedule first downlink access information;

[0395] The number of retransmissions of the first downlink access information is determined according to the scheduling information.

[0396] In some embodiments, the method further comprises:

[0397] Fifth configuration information sent by the network device is received, where the fifth configuration information is used to indicate a number of retransmissions of the first downlink access information supported by the network device.

[0398] In the embodiments of the present disclosure, the relevant implementation method of step S3101 can refer to the embodiment of the aforementioned step S2101 and will not be repeated here.

[0399] In the above technical solution, auxiliary information is sent to the network device. The auxiliary information is used to instruct the network device to determine the number of retransmissions of the first downlink access information based on the auxiliary information. The first downlink access information includes at least one of: contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Thus, the terminal reports the auxiliary information to assist the network device in determining the number of retransmissions of the downlink access information, thereby improving the downlink coverage performance of the network device.

[0400] FIG4 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4 , the embodiment of the present disclosure relates to a communication method, which is executed by a terminal and includes:

[0401] Step S4101: Receive auxiliary information sent by the terminal.

[0402] In some embodiments, the number of retransmissions includes the number of physical downlink control channel PDCCH retransmissions and / or the number of physical downlink shared channel PDSCH retransmissions.

[0403] In some embodiments, the auxiliary information includes at least one of the following:

[0404] First information, the first information is used to indicate the downlink signal quality of the terminal;

[0405] Recommended number of retransmissions;

[0406] Capability information, where the capability information is used to indicate whether the terminal supports retransmission of the first downlink access information.

[0407] In some embodiments, the downlink signal quality includes a channel quality indicator CQI or a reference signal received power RSRP.

[0408] In some embodiments, the method further comprises:

[0409] First configuration information is sent to the terminal, where the first configuration information is used to indicate a mapping relationship between the first information and the first index value.

[0410] In some embodiments, the method further comprises:

[0411] Second configuration information is sent to the terminal, where the second configuration information is used to indicate a mapping relationship between a plurality of recommended retransmission times and a plurality of second reporting values.

[0412] In some embodiments, the method further comprises:

[0413] Send third configuration information to the terminal, where the third configuration information is used to indicate whether the network device supports the terminal to send auxiliary information.

[0414] In some embodiments, the method further comprises:

[0415] The trigger threshold configuration information is sent to the terminal, where the trigger threshold configuration information is used to instruct the terminal to generate auxiliary information according to the trigger threshold configuration information.

[0416] In some embodiments, the method further comprises:

[0417] Send fourth configuration information, where the fourth configuration information is used to indicate a mapping relationship between multiple trigger threshold configurations and multiple recommended retransmission times.

[0418] In some embodiments, the method further comprises:

[0419] The scheduling information is sent to the terminal, where the scheduling information is used to schedule the first downlink access information, and the scheduling information is used to instruct the terminal to determine the number of retransmissions of the first downlink access information according to the scheduling information.

[0420] In some embodiments, the method further comprises:

[0421] Send fifth configuration information to the terminal, where the fifth configuration information is used to indicate the number of retransmissions of the first downlink access information supported by the network device.

[0422] In the embodiment of the present disclosure, the implementation of step S4101 may refer to the implementation of the aforementioned step S2102 and will not be repeated here.

[0423] Step S4102: Determine the number of retransmissions of the first downlink access information according to the auxiliary information.

[0424] In some embodiments, the first downlink access information includes at least one of: contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

[0425] In the embodiment of the present disclosure, the implementation of step S4102 may refer to the implementation of the aforementioned step S2102 and will not be repeated here.

[0426] In the above technical solution, the network device receives auxiliary information sent by the terminal and determines the number of retransmissions of the first downlink access information based on the auxiliary information. The first downlink access information includes at least one of: contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Thus, the terminal reports the auxiliary information to assist the network device in determining the number of retransmissions of the downlink access information, thereby improving the downlink coverage performance of the network device.

[0427] Figure 5 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 5, the embodiment of the present disclosure relates to a communication method, which is executed by a terminal. The method includes:

[0428] Step S5101: The terminal reports auxiliary information, where the auxiliary information is used to assist the network device in determining the number of retransmissions of Msg2 / Msg4 / MsgB.

[0429] In some embodiments, the assistance information is applicable to a TN cell or an NTN cell.

[0430] In some embodiments, the terminal may be applicable to an idle terminal / inactive terminal / connected terminal.

[0431] In some embodiments, the Msg2 / Msg4 / MsgB retransmission includes: Msg2 / Msg4 / MsgB PDCCH retransmission and / or Msg2 / Msg4 / MsgB PDSCH retransmission.

[0432] In some embodiments, the auxiliary information includes at least one of the following:

[0433] Downlink signal quality;

[0434] Recommended number of retransmissions;

[0435] Capability information, which is used to indicate whether the UE supports Msg2 / Msg4 / MsgB retransmission.

[0436] In some embodiments, the downlink signal quality may be a CQI or a downlink path loss reference point RSRP.

[0437] In some embodiments, the recommended retransmission times of Msg2 and Msg4 may be reported separately.

[0438] In some embodiments, a threshold value is defined, and the UE reports whether retransmission is required based on the downlink signal quality and the threshold value if the UE has the retransmission capability.

[0439] In some embodiments, for reporting downlink signal quality, the terminal maps the downlink signal quality to a reporting value and then reports the reporting value.

[0440] In some embodiments, the downlink signal quality is mapped to multiple intervals, for example, [<-5], [-5, 0], [0, 5], [5, 10], [>10]. The terminal reports the index value of the interval in which the downlink signal quality is located.

[0441] In some embodiments, the terminal receives a mapping relationship between downlink signal quality and a reporting value configured by the network.

[0442] In some embodiments, a mapping relationship between downlink signal quality and reporting value is agreed upon by the communication system.

[0443] In some embodiments, if the downlink signal quality is not within any configured or system-agreed mapping interval, the UE does not report the downlink signal quality.

[0444] In some embodiments, for reporting the recommended number of retransmissions, the terminal maps the recommended number of retransmissions to a reporting value and then reports the reporting value.

[0445] In some embodiments, the number of reported retransmissions is mapped to multiple intervals, for example, [<-5], [-5, 0], [0, 5], [5, 10], [>10]. The terminal reports the index value of the interval in which the downlink signal quality is located.

[0446] In some embodiments, the terminal receives a mapping relationship between the number of retransmissions configured by the network and the reporting value.

[0447] In some embodiments, the configuration is performed through a system message, such as SIB1 / SIB19 configuration, or through dedicated signaling such as an RRC reconfiguration message or an RRC connection release message.

[0448] In some embodiments, the system agrees on a mapping relationship between the recommended number of retransmissions and the reporting value.

[0449] In some embodiments, the terminal independently determines the mapping relationship between the recommended number of retransmissions and the reporting value.

[0450] In some embodiments, if the downlink signal quality is not within any configured or system-agreed mapping interval, the UE does not report the recommended number of retransmissions.

[0451] In some embodiments, the auxiliary information is reported via Msg1 / MsgA.

[0452] In some embodiments, different reporting values ​​may be sent via different PRACH resources.

[0453] In some embodiments, the auxiliary information is reported via Msg3. For example, when the auxiliary information is reported via Msg3, the first downlink access information is Msg4.

[0454] In some embodiments, the reporting value may be indicated by carrying a MAC CE on Msg3.

[0455] In some embodiments, the auxiliary information is reported via RRC messages, such as UE capability reporting, UE auxiliary information reporting, etc.

[0456] In some embodiments, the terminal receives network configuration information indicating whether the network supports / allows the terminal to report the auxiliary information.

[0457] In some embodiments, the configuration is performed through a system message, such as SIB1 / SIB19 configuration, or through dedicated signaling such as an RRC reconfiguration message or an RRC connection release message.

[0458] In some embodiments, the terminal receives a trigger threshold configuration for reporting auxiliary information configured by the network, and the terminal reports the auxiliary information only when the trigger threshold is met.

[0459] In some embodiments, the trigger threshold configuration information includes a downlink signal quality threshold.

[0460] In some embodiments, the terminal sends the auxiliary information through Msg1 / MsgA / Msg3 of RACH only when the downlink signal quality is less than a threshold value.

[0461] In some embodiments, the trigger threshold is configured through a system message, such as SIB1 / SIB19 configuration, or through dedicated signaling such as an RRC reconfiguration message or an RRC connection release message.

[0462] In some embodiments, the network device configures RSRP / CQI trigger threshold configurations corresponding to different retransmission times.

[0463] In some embodiments, the UE reports the number of retransmissions after a threshold corresponding to the number of retransmissions is met.

[0464] In some embodiments, the network device indicates the number of retransmissions of Msg2 / MsgB / Msg4 in the scheduling information of Msg2 / MsgB / Msg4.

[0465] In some embodiments, the terminal receives network configuration information indicating a number of retransmissions supported by the network. For example, the number of retransmissions indicated by the network in the scheduling information is one of the number of retransmissions supported by the network device. In conjunction with the above embodiment, the number of retransmissions reported by the terminal is one of the number of retransmissions supported by the network.

[0466] In some embodiments, the configuration is performed through a system message, such as SIB1 / SIB19 configuration, or through dedicated signaling such as an RRC reconfiguration message or an RRC connection release message.

[0467] In the above technical solution, the terminal reports auxiliary information to assist the network device in determining the number of retransmissions of downlink access information, thereby improving the downlink coverage performance of the network device.

[0468] FIG6 is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in FIG6 , the terminal 6100 may include: a first transceiver module 6101. In some embodiments, the first transceiver module 6101 is configured to send auxiliary information to a network device, where the auxiliary information is used to instruct the network device to determine the number of retransmissions of the first downlink access information based on the auxiliary information, wherein the first downlink access information includes: at least one of the contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods, which will not be repeated here.

[0469] In some embodiments, the first transceiver module 6101 may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transmitting module and the receiving module may be interchangeable with the transceiver.

[0470] FIG7 is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure. As shown in FIG7 , the network device 7100 may include: a second transceiver module 7101 and a first processing module 7102. In some embodiments, the transceiver module 7101 is configured to receive auxiliary information sent by the terminal, and the first processing module 7102 is configured to determine the number of retransmissions of the first downlink access information based on the auxiliary information, wherein the first downlink access information includes: at least one of the contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Optionally, the second transceiver module 7101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the network device 102 in any of the above methods, which will not be repeated here.

[0471] In some embodiments, the second transceiver module 7101 may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0472] In some embodiments, the first processing module 7102 can be replaced with the execution module.

[0473] Figure 8 is a schematic diagram of the structure of a communication device 8100 according to an embodiment of the present disclosure. Communication device 8100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 8100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0474] As shown in Figure 8, the communication device 8100 includes one or more third processors 8101. The third processor 8101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 8100 is used to perform any of the above methods. Optionally, one or more third processors 8101 are used to call instructions to cause the communication device 8100 to perform any of the above methods.

[0475] In some embodiments, the communication device 8100 further includes one or more third transceivers 8102. When the communication device 8100 includes one or more third transceivers 8102, the third transceiver 8102 performs at least one of the communication steps, such as sending and / or receiving, in the above method, and the third processor 8101 performs at least one of the other steps. In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0476] In some embodiments, the communication device 8100 further includes one or more third memories 8103 for storing data. Alternatively, all or part of the third memories 8103 may be located outside the communication device 8100. In an alternative embodiment, the communication device 8100 may include one or more first interface circuits 8104. Optionally, the first interface circuit 8104 is connected to the third memories 8103. The first interface circuit 8104 may be configured to receive data from the third memories 8103 or other devices, and to send data to the third processor 8101 or other devices. For example, the first interface circuit 8104 may read data stored in the third memories 8103 and send the data to the third processor 8101.

[0477] The communication device 8100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG8 . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0478] FIG9 is a schematic diagram of the structure of a chip 8200 according to an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG9 , but the present invention is not limited thereto.

[0479] The chip 8200 includes one or more fourth processors 8201. The chip 8200 is configured to execute any one of the above methods.

[0480] In some embodiments, the chip 8200 further includes one or more second interface circuits 8202. The terms interface circuit, interface, and transceiver pins are optionally interchangeable. In some embodiments, the chip 8200 further includes one or more fourth memories 8203 for storing data. Optionally, all or part of the fourth memories 8203 may be located external to the chip 8200. Optionally, the second interface circuit 8202 is connected to the fourth memory 8203. The second interface circuit 8202 can be used to receive data from the fourth memory 8203 or other devices, or to send data to the fourth memory 8203 or other devices. For example, the second interface circuit 8202 can read data stored in the fourth memory 8203 and send the data to the fourth processor 8201.

[0481] In some embodiments, the second interface circuit 8202 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method. For example, the second interface circuit 8202 performing the communication steps, such as sending and / or receiving, in the above-described method means that the second interface circuit 8202 performs data exchange between the fourth processor 8201, the chip 8200, the fourth memory 8203, or the transceiver device. In some embodiments, the fourth processor 8201 performs at least one of the other steps.

[0482] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0483] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto, and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto, and may also be a temporary storage medium.

[0484] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0485] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A communication method, characterized in that, Executed by a terminal, the method includes: Sending auxiliary information to a network device, where the auxiliary information is used to instruct the network device to determine the retransmission times of first downlink access information according to the auxiliary information. The first downlink access information includes at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

2. The method according to claim 1, characterized in that, The first downlink access information is applicable to a terrestrial network TN cell or a non-terrestrial network NTN cell.

3. The method according to claim 1 or 2, characterized in that, The terminal includes an idle terminal, a non-active terminal, or a connected terminal.

4. The method according to claim 1, characterized in that, The retransmission times include the physical downlink control channel PDCCH retransmission times and / or the physical downlink shared channel PDSCH retransmission times.

5. The method according to claim 1, characterized in that, The auxiliary information includes at least one of the following: First information, which is used to indicate the downlink signal quality of the terminal; Suggested retransmission times; Capability information, which is used to indicate whether the terminal supports the retransmission of the first downlink access information.

6. The method according to claim 5, characterized in that, The first information includes a channel quality indicator CQI or a reference signal received power RSRP.

7. The method according to claim 5, wherein The first downlink access information includes the Msg2 and the Msg4, and the suggested retransmission times include the first retransmission times of the Msg2 and the second retransmission times of the Msg4.

8. The method according to claim 5, wherein The auxiliary information includes the first information. Sending the auxiliary information to the network device includes: Determining the first information; Determining that the first information is lower than a first threshold and the terminal supports the retransmission of the first downlink access information, and sending the auxiliary information to the network device.

9. The method according to claim 5, characterized in that Sending the auxiliary information to the network device includes: Determining the first information; Determining a first reporting value corresponding to the first information; Sending the auxiliary information to the network device, where the auxiliary information includes the first reporting value.

10. The method according to claim 9, characterized in that, Determining the first reporting value corresponding to the first information includes: Determining a first index value of the value range where the first information is located; Determining the first index value as the first reporting value.

11. The method according to claim 10, characterized in that, Determining the first index value of the value range where the first information is located includes: Receiving first configuration information sent by the network device, where the first configuration information is used to indicate the mapping relationship between the first information and the first index value; Determining the first index value according to the first configuration information and the first information.

12. The method according to claim 10, wherein Determining the first index value of the value range where the first information is located includes: Determining the first index value according to the protocol and the first information; The protocol stipulates the mapping relationship between the first information and the first index value.

13. The method according to claim 5, wherein Sending the auxiliary information to the network device includes: Determining the first information in the terminal; Determining that there is no mapping relationship between the first information and the first index value, and sending the auxiliary information to the network device, where the auxiliary information does not include the downlink signal quality, and the first index value is the index of the value range where the first information is located.

14. The method according to claim 5, characterized in that, The auxiliary information includes the suggested retransmission times. Sending the auxiliary information to the network device includes: Determining the first information; Determining the suggested retransmission times of the first information; Determine a second reporting value corresponding to the recommended retransmission times; Send the auxiliary information to the network device, where the auxiliary information includes the second reporting value.

15. The method according to claim 14, wherein The determining the second reporting value corresponding to the recommended retransmission times includes: Receive second configuration information sent by the network device, where the second configuration information is used to indicate the mapping relationship between the recommended retransmission times and the second reporting value; Determine the second reporting value according to the second configuration information and the recommended retransmission times.

16. The method according to claim 14, characterized in that, The determining the second reporting value corresponding to the recommended retransmission times includes: Determine the second reporting value according to the protocol and the recommended retransmission times; The protocol stipulates the mapping relationship between the recommended retransmission times and the second reporting value.

17. The method according to claim 14, wherein The determining the second reporting value corresponding to the recommended retransmission times includes: Determine the mapping relationship between multiple recommended retransmission times and multiple second reporting values; Determine the second reporting value according to the mapping relationship and the recommended retransmission times.

18. The method according to claim 5, wherein The sending the auxiliary information to the network device includes: Determine the first information; According to the first information, determine the recommended retransmission times of the first downlink access information; Determine that the mapping relationship between the recommended retransmission times and the second reporting value does not exist, and send the auxiliary information to the network device, where the auxiliary information does not include the recommended retransmission times, and the second reporting value is the index of the value range where the recommended retransmission times are located.

19. The method according to claim 1, characterized in that The sending the auxiliary information to the network device includes: Send the auxiliary information to the network device through a contention-based random access request message Msg1 or a non-contention-based random access request message MsgA.

20. The method according to any one of claims 9 - 12, characterized in that, The sending the auxiliary information to the network device includes: According to the first reporting value, determine a first physical random access channel PRACH resource; Send the auxiliary information to the network device through the first PRACH resource.

21. The method according to any one of claims 14 - 17, characterized in that The sending the auxiliary information to the network device includes: According to the second reporting value, determine a first physical random access channel PRACH resource; Send the auxiliary information to the network device through the first PRACH resource.

22. The method according to claim 1, wherein The first downlink access information includes the Msg4, and the sending the auxiliary information to the network device includes: Send the auxiliary information to the network device through a connection request message Msg3, where the auxiliary information is used to instruct the network device to determine the retransmission times of the Msg4 according to the auxiliary information.

23. The method according to claim 22, characterized in that, The sending the auxiliary information to the network device through the connection request message Msg3 includes: Send the Msg3 to the network device, where the Msg3 includes MAC element information, and the MAC element information is used to indicate the first reporting value.

24. The method according to claim 1, wherein The sending the auxiliary information to the network device includes: Send RRC information to the network device, where the RRC information includes the auxiliary information.

25. The method according to claim 1, wherein The method further includes: Receive third configuration information sent by the network device, where the third configuration information is used to indicate whether the network device supports the terminal to send the auxiliary information.

26. The method according to claim 1, characterized in that, The method further includes: Receive the trigger threshold configuration information sent by the network device, where the trigger threshold configuration information includes a downlink signal quality threshold; Determine that the downlink signal quality in the terminal is less than the downlink signal quality threshold, and send the auxiliary information to the network device through Msg1, Msg3 or MsgA of the random access channel RACH.

27. The method according to claim 1, characterized in that The method further includes: Receive the fourth configuration information sent by the network device, where the fourth configuration information is used to indicate the mapping relationship between multiple trigger threshold configurations and multiple recommended retransmission times.

28. The method according to claim 27, wherein The auxiliary information includes a recommended retransmission times, and sending the auxiliary information to the network device includes: Determine the downlink signal quality of the terminal; Determine the recommended retransmission times according to the downlink signal quality and the fourth configuration information; Send the recommended retransmission times to the network device.

29. The method according to claim 1, wherein The method further includes: Receive the scheduling information sent by the network device, where the scheduling information is used to schedule the first downlink access information; Determine the retransmission times of the first downlink access information according to the scheduling information.

30. The method according to claim 1, characterized in that, The method further includes: Receive the fifth configuration information sent by the network device, where the fifth configuration information is used to indicate the retransmission times of the first downlink access information supported by the network device.

31. A communication method, characterized in that, Executed by a network device, the method includes: Receive the auxiliary information sent by the terminal; Determine the retransmission times of the first downlink access information according to the auxiliary information, where the first downlink access information includes at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

32. The method according to claim 31, wherein The retransmission times include the physical downlink control channel PDCCH retransmission times and / or the physical downlink shared channel PDSCH retransmission times.

33. The method according to claim 31, wherein The auxiliary information includes at least one of the following: The first information, where the first information is used to indicate the downlink signal quality of the terminal; The recommended retransmission times; Capability information, where the capability information is used to indicate whether the terminal supports the retransmission of the first downlink access information.

34. The method according to claim 33, characterized in that, The downlink signal quality includes a channel quality indicator CQI or a reference signal received power RSRP.

35. The method according to claim 31, wherein The method further includes: Send the first configuration information to the terminal, where the first configuration information is used to indicate the mapping relationship between the first information and the first index value.

36. The method according to claim 31, wherein The method further includes: Send the second configuration information to the terminal, where the second configuration information is used to indicate the mapping relationship between the recommended retransmission times and the second reporting value.

37. The method according to claim 31, wherein The method further includes: Send the third configuration information to the terminal, where the third configuration information is used to indicate whether the network device supports the terminal to send the auxiliary information.

38. The method according to claim 31, characterized in that, The method further includes: Send the trigger threshold configuration information to the terminal, where the trigger threshold configuration information is used to indicate that the terminal generates the auxiliary information according to the trigger threshold configuration information.

39. The method according to claim 31, characterized in that, The method further includes: Send the fourth configuration information, where the fourth configuration information is used to indicate the mapping relationship between the trigger threshold configuration and the recommended retransmission times.

40. The method according to claim 31, characterized in that, The method further includes: Send scheduling information to the terminal, where the scheduling information is used to schedule the first downlink access information, and the scheduling information is used to instruct the terminal to determine the number of retransmissions of the first downlink access information according to the scheduling information.

41. The method according to claim 31, characterized in that, The method further includes: Send fifth configuration information to the terminal, where the fifth configuration information is used to indicate the number of retransmissions of the first downlink access information supported by the network device.

42. A communication method, characterized in that, The method includes: The terminal sends auxiliary information to the network device; The network device determines the number of retransmissions of the first downlink access information according to the auxiliary information, where the first downlink access information includes at least one of contention random access response message Msg2, contention resolution message Msg4, and non-contention random access response message MsgB.

43. A terminal, characterized in that, Includes: A first transceiver module, configured to send auxiliary information to the network device, where the auxiliary information is used to instruct the network device to determine the number of retransmissions of the first downlink access information according to the auxiliary information, where the first downlink access information includes at least one of contention random access response message Msg2, contention resolution message Msg4, and non-contention random access response message MsgB.

44. A network device, characterized in that, Includes: A second transceiver module, configured to receive the auxiliary information sent by the terminal; A first processing module, configured to determine the number of retransmissions of the first downlink access information according to the auxiliary information, where the first downlink access information includes at least one of contention random access response message Msg2, contention resolution message Msg4, and non-contention random access response message MsgB.

45. A terminal, characterized in that, Includes: One or more processors; Wherein, the terminal is used to execute the communication method according to any one of claims 1-30.

46. A network device, characterized in that, Includes: One or more processors; Wherein, the network device is used to execute the communication method according to any one of claims 31-41.

47. A communication system, characterized in that, Includes a terminal and a network device, where the terminal is configured to implement the communication method according to any one of claims 1-30, and the network device is configured to implement the communication method according to any one of claims 31-41.

48. A storage medium storing instructions, characterized in that, When the instruction runs on the communication device, it causes the communication device to execute the communication method according to any one of claims 1-30, or causes the communication device to execute the communication method according to any one of claims 31-41.

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