Information transmission method, equipment, device and storage medium

Abstract

The invention provides an information transmission method, equipment, a device and a storage medium. The method comprises the following steps: determining resource configuration information of a downlink control channel (PDCCH) after enhancement of the PDCCH in a non-terrestrial network; and sending the resource configuration information of the PDCCH to the terminal equipment. Through the method, the performance of the PDCCH in a non-ground network can be improved, and the stability of downlink control information transmission is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and in particular, to an information transmission method, device, apparatus and storage medium. BACKGROUND

[0002] Non-Terrestrial Network (NTN) is an emerging wireless communication technology, which has made research progress and application in multiple fields. NTN technology can utilize earth orbiting satellite uplink and downlink transmission data to help terminal users in remote areas achieve two-way data transmission, making up for the transmission defects of ground networks.

[0003] The Physical Downlink Control Channel (PDCCH) in the NTN scenario is used to transmit downlink control information, which carries the information needed for scheduling and transmitting data. The performance of this channel also affects other channels, so it is particularly important to ensure the performance of PDCCH. SUMMARY

[0004] The embodiments of the present disclosure at least provide an information transmission method, device, apparatus and storage medium to solve the problem of poor PDCCH performance in the NTN scenario.

[0005] In a first aspect, the embodiments of the present disclosure provide an information transmission method applied to a network device, comprising:

[0006] determining resource configuration information of a PDCCH enhanced in a non-terrestrial network;

[0007] sending the resource configuration information of the PDCCH to a terminal device.

[0008] In a possible implementation, before determining the resource configuration information of the PDCCH enhanced in the non-terrestrial network, the method further comprises:

[0009] receiving PDCCH state information sent by the terminal device;

[0010] determining that PDCCH enhancement is needed according to the PDCCH state information.

[0011] In a possible implementation, the PDCCH state information comprises Reference Signal Received Power (RSRP).

[0012] The determining that PDCCH enhancement is needed according to the PDCCH state information comprises:

[0013] In a case that the RSRP is less than a first threshold, it is determined that PDCCH enhancement is needed.

[0014] In a possible implementation, the PDCCH state information comprises channel quality indication (CQI) information.

[0015] Determining, according to the PDCCH state information, that the PDCCH enhancement is needed comprises:

[0016] Determining, based on the CQI information, a signal to interference plus noise ratio (SINR) of the downlink.

[0017] In a case that the SINR is less than a second threshold, it is determined that the PDCCH enhancement is needed.

[0018] In a possible implementation, the resource configuration information of the PDCCH after the PDCCH enhancement comprises:

[0019] The resource configuration information of the PDCCH after the PDCCH enhancement in the time domain is determined.

[0020] In a possible implementation, a first number of symbols occupied by the PDCCH after the PDCCH enhancement in the time domain within a single time slot is greater than a second number of symbols occupied by the PDCCH before the PDCCH enhancement; or,

[0021] A first number of time slots corresponding to the PDCCH after the PDCCH enhancement in the time domain for transmitting downlink control information is greater than a second number of time slots for transmitting downlink control information before the PDCCH enhancement; the first number N is a positive integer greater than or equal to 2.

[0022] In a possible implementation, the first number of symbols is twice the second number of symbols.

[0023] In a possible implementation, each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH within the N time slots.

[0024] In a possible implementation, the N time slots are used for N times of repeated transmission of the downlink control information.

[0025] In a possible implementation, the resource configuration information of the PDCCH after the PDCCH enhancement comprises:

[0026] The resource configuration information of the PDCCH after the PDCCH enhancement in the frequency domain is determined; wherein a first number of physical resource blocks (PRBs) occupied by the PDCCH after the PDCCH enhancement in the frequency domain is greater than a second number of PRBs occupied by the PDCCH before the PDCCH enhancement.

[0027] In a possible implementation, the first PRB number is twice the second PRB number.

[0028] In a possible implementation, the resource configuration information of the PDCCH after PDCCH enhancement in the non-terrestrial network is determined, including:

[0029] determining the downlink time-frequency resources currently available in the non-terrestrial network;

[0030] determining the resource configuration information of the PDCCH after PDCCH enhancement based on the downlink time-frequency resources.

[0031] In a second aspect, the embodiments of the present disclosure provide an information transmission method applied to a terminal device, including:

[0032] receiving the resource configuration information of the PDCCH after PDCCH enhancement in the non-terrestrial network;

[0033] receiving the enhanced PDCCH based on the resource configuration information.

[0034] In a possible implementation, before receiving the resource configuration information of the PDCCH after PDCCH enhancement in the non-terrestrial network, the method further includes:

[0035] determining and sending the PDCCH state information.

[0036] In a possible implementation, the PDCCH state information includes reference signal received power (RSRP).

[0037] determining the PDCCH state information, including:

[0038] determining the RSRP based on the received synchronization signal block (SSB).

[0039] In a possible implementation, the PDCCH state information includes channel quality indicator (CQI) information.

[0040] determining the PDCCH state information, including:

[0041] determining the signal to interference plus noise ratio (SINR) based on the received channel state information (CSI);

[0042] determining the CQI information according to the SINR.

[0043] In a possible implementation, the resource configuration information of the PDCCH after PDCCH enhancement includes the resource configuration information of the PDCCH after PDCCH enhancement in the time domain.

[0044] In a possible implementation, the first number of symbols occupied by the enhanced PDCCH in a time domain is greater than the second number of symbols occupied by the PDCCH before the PDCCH is enhanced.

[0045] The first number of time slots corresponding to the enhanced PDCCH in a time domain for transmitting downlink control information is greater than the second number of time slots for transmitting downlink control information before the PDCCH is enhanced. N is a positive integer greater than or equal to 2.

[0046] In a possible implementation, the first number of symbols is twice the second number of consecutive symbols.

[0047] In a possible implementation, each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots.

[0048] In a possible implementation, the N time slots are used for N times of repeated transmission of the downlink control information.

[0049] In a possible implementation, the resource configuration information of the enhanced PDCCH includes the resource configuration information of the enhanced PDCCH in a frequency domain. The first number of physical resource blocks (PRBs) occupied by the enhanced PDCCH in the frequency domain is greater than the second number of PRBs occupied by the PDCCH before the PDCCH is enhanced.

[0050] In a possible implementation, the first number of PRBs is twice the second number of PRBs.

[0051] In a possible implementation, if each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots, receiving the enhanced PDCCH based on the resource configuration information includes:

[0052] Receiving each information bit transmitted in the N time slots, and combining the received information bits before decoding.

[0053] In a possible implementation, if the N time slots are used for N times of repeated transmission of the downlink control information, receiving information transmitted by the enhanced PDCCH based on the resource configuration information includes:

[0054] Receiving N times of downlink control information repeatedly transmitted in the N time slots, and jointly decoding the received N times of downlink control information.

[0055] In a third aspect, the embodiments of the present disclosure also provide an information transmission device deployed in a network device, including a memory, a transceiver, and a processor.

[0056] a memory for storing a computer program; a transceiver for transceiving data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0057] determining resource configuration information of a PDCCH enhanced in a non-terrestrial network;

[0058] sending the resource configuration information of the PDCCH to a terminal device.

[0059] In a possible implementation, before determining the resource configuration information of the PDCCH enhanced in the non-terrestrial network, the method further includes:

[0060] receiving PDCCH state information sent by the terminal device;

[0061] determining that PDCCH enhancement is needed according to the PDCCH state information.

[0062] In a possible implementation, the PDCCH state information includes reference signal received power (RSRP).

[0063] determining that PDCCH enhancement is needed according to the PDCCH state information, includes:

[0064] determining that PDCCH enhancement is needed when the RSRP is less than a first threshold.

[0065] In a possible implementation, the PDCCH state information includes channel quality indicator (CQI) information.

[0066] determining that PDCCH enhancement is needed according to the PDCCH state information, includes:

[0067] determining a signal-to-interference-plus-noise ratio (SINR) of the downlink based on the CQI information.

[0068] determining that PDCCH enhancement is needed when the SINR is less than a second threshold.

[0069] In a possible implementation, the determining the resource configuration information of the PDCCH enhanced includes:

[0070] determining resource configuration information of the PDCCH enhanced in a time domain.

[0071] In a possible implementation, a first number of symbols occupied by the PDCCH enhanced in the time domain within a single time slot is greater than a second number of symbols occupied by the PDCCH before the PDCCH enhancement; or,

[0072] The first number of time slots N corresponding to the PDCCH after PDCCH enhancement in the time domain for transmitting downlink control information is greater than the second number of time slots for transmitting downlink control information before PDCCH enhancement; N is a positive integer greater than or equal to 2.

[0073] In a possible implementation, the first number of symbols is twice the second number of symbols.

[0074] In a possible implementation, each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots.

[0075] In a possible implementation, the N time slots are used for N times of repeated transmission of the downlink control information.

[0076] In a possible implementation, the resource configuration information of the PDCCH after PDCCH enhancement is determined, including:

[0077] The resource configuration information of the PDCCH after PDCCH enhancement in the frequency domain is determined; wherein the first number of physical resource blocks (PRBs) occupied by the PDCCH after PDCCH enhancement in the frequency domain is greater than the second number of PRBs occupied before PDCCH enhancement.

[0078] In a possible implementation, the first number of PRBs is twice the second number of PRBs.

[0079] In a possible implementation, the resource configuration information of the PDCCH after PDCCH enhancement in the non-terrestrial network is determined, including:

[0080] The downlink time-frequency resources currently available in the non-terrestrial network are determined.

[0081] Based on the downlink time-frequency resources, the resource configuration information of the PDCCH after PDCCH enhancement is determined.

[0082] In a fourth aspect, the embodiments of the present disclosure further provide an information transmission device deployed in a terminal device, including a memory, a transceiver, and a processor.

[0083] The memory is configured to store a computer program; the transceiver is configured to transceive data under the control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0084] The resource configuration information of the PDCCH after PDCCH enhancement in the non-terrestrial network is received.

[0085] The enhanced PDCCH is received based on the resource configuration information.

[0086] In a possible implementation, before receiving the resource configuration information of the PDCCH after PDCCH enhancement in the non-terrestrial network, the processor is further configured to perform the following operations:

[0087] determine and send PDCCH status information.

[0088] In a possible implementation, the PDCCH status information includes reference signal received power (RSRP).

[0089] determining the PDCCH status information includes:

[0090] determining the RSRP based on a received synchronization signal block (SSB).

[0091] In a possible implementation, the PDCCH status information includes channel quality indicator (CQI) information.

[0092] determining the PDCCH status information includes:

[0093] determining a signal-to-interference-plus-noise ratio (SINR) based on a received channel state information (CSI).

[0094] determining the CQI information according to the SINR.

[0095] In a possible implementation, the resource configuration information of the PDCCH after PDCCH enhancement includes resource configuration information of the PDCCH after PDCCH enhancement in the time domain.

[0096] In a possible implementation, the PDCCH after PDCCH enhancement occupies a first number of symbols in a single time slot in the time domain, which is greater than a second number of symbols before PDCCH enhancement; or,

[0097] the PDCCH after PDCCH enhancement corresponds to a first number N of time slots for transmitting downlink control information in the time domain, which is greater than a second number of time slots for transmitting downlink control information before PDCCH enhancement; N is a positive integer greater than or equal to 2.

[0098] In a possible implementation, the first number of symbols is twice the second number of consecutive symbols.

[0099] In a possible implementation, each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots.

[0100] In a possible implementation, the N time slots are used for N times of repeated transmission of the downlink control information.

[0101] In a possible implementation, the resource configuration information of the PDCCH after the PDCCH enhancement includes: resource configuration information of the PDCCH after the PDCCH enhancement in the frequency domain; and a first number of physical resource blocks (PRBs) occupied by the PDCCH after the PDCCH enhancement in the frequency domain is greater than a second number of PRBs occupied by the PDCCH before the PDCCH enhancement.

[0102] In a possible implementation, the first number of PRBs is twice the second number of PRBs.

[0103] In a possible implementation, if each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in N time slots, receiving the PDCCH after the PDCCH enhancement based on the resource configuration information includes:

[0104] receiving each information bit transmitted in the N time slots, and performing decoding after combining the received information bits.

[0105] In a possible implementation, if the N time slots are used for N times of repeated transmission of the downlink control information, receiving information transmitted by the PDCCH after the PDCCH enhancement based on the resource configuration information includes:

[0106] receiving N pieces of downlink control information repeatedly transmitted in the N time slots, and performing joint decoding on the received N pieces of downlink control information.

[0107] In a fifth aspect, the embodiments of the present disclosure further provide an information transmission apparatus for a network device, the apparatus including:

[0108] a determination module configured to determine resource configuration information of a PDCCH after PDCCH enhancement in a non-terrestrial network;

[0109] a first sending module configured to send the resource configuration information of the PDCCH to a terminal device.

[0110] In a possible implementation, before determining the resource configuration information of the PDCCH after the PDCCH enhancement in the non-terrestrial network, the determination module is further configured to:

[0111] receive PDCCH state information sent by the terminal device;

[0112] determine, according to the PDCCH state information, that the PDCCH enhancement is needed.

[0113] In a possible implementation, the PDCCH state information includes reference signal received power (RSRP).

[0114] The determining module is configured to determine that PDCCH enhancement is needed when it is determined according to the PDCCH state information that PDCCH enhancement is needed.

[0115] The determining module is configured to determine that PDCCH enhancement is needed when the RSRP is less than the first threshold.

[0116] In a possible implementation, the PDCCH state information includes channel quality indication (CQI) information.

[0117] The determining module is configured to determine that PDCCH enhancement is needed when it is determined according to the PDCCH state information that PDCCH enhancement is needed.

[0118] The determining module is configured to determine a signal to interference plus noise ratio (SINR) of the downlink based on the CQI information.

[0119] The determining module is configured to determine that PDCCH enhancement is needed when the SINR is less than a second threshold.

[0120] In a possible implementation, the determining module is configured to determine resource configuration information of the PDCCH after PDCCH enhancement when it is determined that PDCCH enhancement is needed.

[0121] The determining module is configured to determine resource configuration information of the PDCCH after PDCCH enhancement in the time domain.

[0122] In a possible implementation, a first number of symbols occupied by the PDCCH after PDCCH enhancement in the time domain is greater than a second number of symbols occupied by the PDCCH before PDCCH enhancement; or

[0123] A first number of time slots corresponding to the PDCCH after PDCCH enhancement in the time domain, used for transmitting downlink control information, is greater than a second number of time slots used for transmitting downlink control information before PDCCH enhancement; the first number N is a positive integer greater than or equal to 2.

[0124] In a possible implementation, the first number of symbols is twice the second number of symbols.

[0125] In a possible implementation, each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots.

[0126] In a possible implementation, the N time slots are used for N times of repeated transmission of the downlink control information.

[0127] In a possible implementation, the determining module is configured to determine resource configuration information of the PDCCH after PDCCH enhancement when it is determined that PDCCH enhancement is needed.

[0128] The resource configuration information of the PDCCH after PDCCH enhancement in the frequency domain is determined, wherein the number of first physical resource blocks (PRBs) occupied by the PDCCH after PDCCH enhancement in the frequency domain is greater than the number of second PRBs occupied before PDCCH enhancement.

[0129] In a possible implementation, the number of first PRBs is twice the number of second PRBs.

[0130] In a possible implementation, when determining the resource configuration information of the PDCCH after PDCCH enhancement, the determining module is configured to:

[0131] determine the downlink time-frequency resources currently available in the non-terrestrial network;

[0132] determine the resource configuration information of the PDCCH after PDCCH enhancement based on the downlink time-frequency resources.

[0133] In a sixth aspect, the embodiments of the present disclosure further provide an information transmission apparatus for a terminal device, which comprises:

[0134] a first receiving module configured to receive the resource configuration information of the PDCCH after PDCCH enhancement in the non-terrestrial network;

[0135] a second receiving module configured to receive the enhanced PDCCH based on the resource configuration information.

[0136] In a possible implementation, the apparatus further comprises a second sending module configured to determine and send PDCCH state information before receiving the resource configuration information of the PDCCH after PDCCH enhancement in the non-terrestrial network.

[0137] In a possible implementation, the PDCCH state information comprises reference signal received power (RSRP).

[0138] The second sending module, when determining the PDCCH state information, is configured to:

[0139] determine the RSRP based on a received synchronization signal block (SSB).

[0140] In a possible implementation, the PDCCH state information comprises channel quality indicator (CQI) information.

[0141] The second sending module, when determining the PDCCH state information, is configured to:

[0142] determine a signal to interference plus noise ratio (SINR) based on a received channel state information (CSI).

[0143] determine the CQI information according to the SINR.

[0144] In a possible implementation, the resource configuration information of the PDCCH after PDCCH enhancement includes resource configuration information of the PDCCH after PDCCH enhancement in the time domain.

[0145] In a possible implementation, the PDCCH after PDCCH enhancement occupies a first number of symbols in a single time slot in the time domain, which is greater than a second number of symbols before PDCCH enhancement.

[0146] The PDCCH after PDCCH enhancement corresponds to a first number of time slots N for transmitting downlink control information in the time domain, which is greater than a second number of time slots for transmitting downlink control information before PDCCH enhancement; N is a positive integer greater than or equal to 2.

[0147] In a possible implementation, the first number of symbols is twice the second number of consecutive symbols.

[0148] In a possible implementation, each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots.

[0149] In a possible implementation, the N time slots are used for N times of repeated transmission of the downlink control information.

[0150] In a possible implementation, the resource configuration information of the PDCCH after PDCCH enhancement includes resource configuration information of the PDCCH after PDCCH enhancement in the frequency domain; wherein the PDCCH after PDCCH enhancement occupies a first number of physical resource blocks (PRBs) in the frequency domain, which is greater than a second number of PRBs before PDCCH enhancement.

[0151] In a possible implementation, the first number of PRBs is twice the second number of PRBs.

[0152] In a possible implementation, if each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots, the second receiving module, when receiving the enhanced PDCCH based on the resource configuration information, is configured to:

[0153] receive each information bit transmitted in the N time slots, and combine and decode the received each information bit.

[0154] In a possible implementation, if the N time slots are used for N times of repeated transmission of the downlink control information, the second receiving module, when receiving the enhanced PDCCH based on the resource configuration information, is configured to:

[0155] Receive N downlink control messages that are repeatedly transmitted on N time slots, and jointly decode the received N downlink control messages.

[0156] In a seventh aspect, embodiments of this disclosure also provide a processor-readable storage medium storing a computer program for causing a processor to perform the steps of the information transmission method of the first aspect above, or to perform the steps of the information transmission method of the second aspect above.

[0157] Eighthly, embodiments of this disclosure also provide a computer program product, which, when invoked by a computer, causes the computer to execute the steps of the information transmission method of the first aspect above, or to execute the steps of the information transmission method of the second aspect above.

[0158] The information transmission method, device, apparatus, and storage medium provided in this disclosure can determine the resource configuration information of the enhanced PDCCH in an NTN scenario through a network device, and then send the PDCCH resource configuration information to a terminal device. In this way, the network device can configure the enhanced PDCCH based on the resource configuration information and transmit information to the terminal device through the enhanced PDCCH. The terminal device can also receive the enhanced PDCCH based on the resource configuration information, thereby improving the performance of the PDCCH and enhancing the stability of downlink control information transmission.

[0159] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0160] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this disclosure and, together with the specification, serve to explain the technical solutions of this disclosure. It should be understood that the following drawings only show some embodiments of this disclosure and should not be considered as limiting the scope. Those skilled in the art can obtain other related drawings based on these drawings without creative effort.

[0161] Figure 1 A schematic diagram of a communication system provided by an embodiment of this disclosure is shown;

[0162] Figure 2 A flowchart of an information transmission method provided by an embodiment of this disclosure is shown;

[0163] Figure 3A schematic diagram of PDCCH enhancement in a single time slot is shown according to an embodiment of the present disclosure.

[0164] Figure 4 A schematic diagram of PDCCH enhancement across time slots is shown according to an embodiment of the present disclosure.

[0165] Figure 5 A schematic diagram of PDCCH enhancement in cross-time slot repetition transmission is shown according to an embodiment of the present disclosure.

[0166] Figure 6 A schematic diagram of PDCCH enhancement in frequency domain is shown according to an embodiment of the present disclosure.

[0167] Figure 7 A flow chart of another information transmission method is shown according to an embodiment of the present disclosure.

[0168] Figure 8 A schematic diagram of an information transmission device is shown according to an embodiment of the present disclosure.

[0169] Figure 9 A schematic diagram of another information transmission device is shown according to an embodiment of the present disclosure.

[0170] Figure 10 A schematic diagram of an information transmission apparatus is shown according to an embodiment of the present disclosure.

[0171] Figure 11 A schematic diagram of another information transmission apparatus is shown according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0172] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the following will be combined with the accompanying drawings for the embodiments of the present disclosure to make a clear and complete description of the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. The components of the embodiments of the present disclosure described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed present disclosure, but only represents selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present disclosure.

[0173] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0174] The term "multiple" in the embodiments of the present disclosure refers to two or more, and other quantifiers are similar. The term "and / or" in the embodiments of the present disclosure describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0175] The terms "first", "second", and similar words used in the embodiments of the present disclosure do not represent any order, quantity, or importance, but are only used to distinguish different threshold values.

[0176] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present disclosure.

[0177] The embodiments of the present disclosure provide an information transmission method, device, apparatus and storage medium, to solve the problem of poor PDCCH performance in the NTN scenario.

[0178] The method and the apparatus are based on the same inventive concept. Since the principles of the method and the apparatus for solving problems are similar, the implementation of the apparatus and the method can be referred to each other, and the repeated parts will not be described.

[0179] The technical solutions provided by the embodiments of the present disclosure can be applied to various systems. For example, the applicable systems can be a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a long term evolution advanced (LTE-A) system, a universal mobile system (UMTS), a worldwide interoperability for microwave access (WiMAX) system, a 5G new radio (NR) system, and an evolved communication system thereof. The various systems can include terminal devices and network devices. The system can also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc. The above systems can include multiple networks.

[0180] The terminal device to which the embodiments of the present disclosure relate can refer to a device providing voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing devices connected to a wireless modem, etc. In different systems, the name of the terminal device can also be different, for example, in the 5G system, the terminal device can be called user equipment (UE). The wireless terminal device can be a USB storage device, other personal computer memory devices and a dongle, and can also communicate with one or more core networks (CN) through a radio access network (RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or called "cellular" phone) and a computer with a mobile terminal device, for example, it can be a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device, which exchanges voice and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), personal computers, tablet computers, machine-type communication (MTC) terminal devices, etc. The wireless terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, and a wireless access device and a router / modem that meet the definition limit, etc. The embodiments of the present disclosure are not limited.

[0181] The network device related to the embodiments of the present disclosure can include a base station or other network side device. For example, the base station can include a plurality of cells serving terminals. According to different application scenarios, the base station can also be referred to as an access point, or can be a device in an access network that communicates with wireless terminal devices through one or more sectors over an air interface, or other names. The network device can be used to exchange received air frames and Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which can include an Internet Protocol (IP) communication network. The network device can also coordinate the management of the properties of the air interface. For example, the network device related to the embodiments of the present disclosure can be an evolved network device (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system (5G network architecture), etc., and can also be a home evolved base station (HeNB), a relay node, a femto, a pico, a network test device, a satellite base station, etc., which are not limited in the embodiments of the present disclosure. In some network structures, the network device can include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit can also be arranged geographically apart.

[0182] Those skilled in the art can understand that, in the above method of the specific implementation, the writing order of each step does not mean a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible inherent logic.

[0183] Reference is made to Figure 1As shown, it is a schematic diagram of a communication system designed by the embodiment of the present disclosure, which includes one or more wireless communication networks, which can be an NTN. Network devices and user equipment can be deployed in the wireless communication network, and the network devices and the user equipment can communicate with each other, and the network devices can also communicate with each other. The non-terrestrial network can include a near space network and a satellite communication network, and the satellite communication network can include a non-geostationary earth orbit (Non-Geostationary Earth Orbit, NGEO) satellite (such as a low earth orbit (Low Earth Orbit, LEO), a medium earth orbit (Medium Earth Orbit, MEO), a high orbit satellite (geostationary earth orbit (Geostationary Earth Orbit) satellite), a highly elliptical orbit network (Highly Elliptical Orbit, HEO)), etc., and the satellite can be regarded as a base station.

[0184] In addition, the non-terrestrial network includes but is not limited to a satellite network (GEO, HEO, MEO, LEO) belonging to a space-based network, and also includes a near space network, including but not limited to a network composed of or provided by a drone, a dirigible, an airplane, etc.

[0185] In the current 3rd Generation Partnership Project (3GPP) NTN scenario, the uplink link budget is always inferior to the downlink, so the focus of technical research is on the coverage enhancement of the uplink.

[0186] However, due to the particularity of satellite communication, multi-beam or will become the main way of future satellite communication, and allocating the already scarce on-board resources to multiple beams will inevitably lead to a shortage of transmission power for each beam, resulting in poor downlink performance and reduced link margin. In the process of satellite communication, PDCCH as a control channel, the downlink control information (Downlink Control Information, DCI) transmitted by it carries the information needed for scheduling and transmitting data, and the performance of this channel also affects other channels.

[0187] It is found through research that before the terminal enters the network, the number of bits of the downlink control information (Downlink Control Information, DCI) is small, so the performance of the PDCCH is good and the link margin is sufficient, but after the terminal enters the network, the amount of information carried by the DCI increases, the performance of the PDCCH is poor, but there is still room for improvement in the link margin.

[0188] Based on this, the embodiment of the present disclosure provides an information transmission method for solving the problem of poor PDCCH performance in the NTN scenario.

[0189] Referring to Figure 2 Fig. 4 is a flowchart of an information transmission method provided by an embodiment of the present disclosure, which is applied to a network device and includes the following steps:

[0190] S201, determine resource configuration information of a PDCCH after PDCCH enhancement in a non-terrestrial network.

[0191] Here, the resource configuration information of the PDCCH can be information for indicating time-frequency resources occupied by the PDCCH. Alternatively, the time-frequency resources occupied by the PDCCH after PDCCH enhancement are more than the time-frequency resources occupied by the PDCCH before PDCCH enhancement, and the performance of the PDCCH after enhancement is better than that of the PDCCH before enhancement.

[0192] S202, send the resource configuration information of the PDCCH to a terminal device.

[0193] After sending the resource configuration information of the PDCCH to the terminal device, the terminal device can receive the PDCCH after enhancement based on the resource configuration information, i.e., receive downlink control information transmitted based on the PDCCH after enhancement.

[0194] In a possible implementation, the resource configuration information of the PDCCH after PDCCH enhancement can be determined by the network device. Since the PDCCH needs to be enhanced in a poor performance / condition, and does not need to be enhanced in a good performance / condition, the network device can first receive PDCCH condition information sent by the terminal device before determining the resource configuration information of the PDCCH after PDCCH enhancement, and then determine whether PDCCH enhancement is needed based on the PDCCH condition information. If needed, the resource configuration information of the PDCCH after enhancement is determined again, and the resource configuration information is sent to the terminal device.

[0195] Alternatively, the PDCCH condition information can include Reference Signal Receiving Power (RSRP), which is a key parameter representing wireless signal strength. When determining whether to perform PDCCH enhancement based on RSRP, it can be determined whether the RSRP is less than a first threshold. If the RSRP is less than the first threshold, it means that the wireless signal strength is weak, and it is determined that PDCCH enhancement is needed. If the RSRP is greater than or equal to the first threshold, it means that the wireless signal strength is strong, and PDCCH enhancement is not needed.

[0196] Optionally, the PDCCH state information can include Channel Quality Indicator (CQI) information, which mainly reflects the quality of the current wireless channel. When determining whether to perform PDCCH enhancement based on the CQI information, the signal to interference plus noise ratio (SINR) of the downlink can be determined based on the CQI information. If the SINR is less than a second threshold, it can be determined that PDCCH enhancement is needed. If the SINR is greater than or equal to the second threshold, PDCCH enhancement is not needed.

[0197] In a specific implementation, a mapping relationship between CQI and SINR can be established in advance. After receiving the CQI information sent by the terminal, the SINR value corresponding to the CQI information can be determined based on the mapping relationship. The SINR value is compared with the second threshold to determine whether PDCCH enhancement is needed.

[0198] In an embodiment, when it is determined based on the PDCCH state information that PDCCH enhancement is not needed, the terminal device can be sent first indication information, which is used to instruct the terminal device to receive the PDCCH according to the current resource configuration information of the terminal device. Alternatively, the terminal device can be directly sent the resource configuration information of the PDCCH before enhancement, which can be the same as the current resource configuration information of the terminal device.

[0199] In another possible embodiment, since not all terminal devices support enhanced PDCCH, the terminal device can send second indication information to the network device, which is used to indicate that the terminal device supports the enhanced PDCCH.

[0200] Here, the terminal device can send the second indication information synchronously when sending the PDCCH state information to the network device. The network device can determine the resource configuration information of the enhanced PDCCH when it is determined based on the state information that enhancement is needed.

[0201] Alternatively, the second indication information can be sent by the terminal device in a case where the terminal device determines, based on the PDCCH-based state information, that PDCCH enhancement is needed, that is, the terminal device can determine, based on the PDCCH state information, whether PDCCH enhancement is needed after determining the PDCCH state information, and does not need to feed back the PDCCH state information to the network device. In a case where it is determined that enhancement is needed, the second indication information is sent to the network device, and the second indication information can implicitly indicate to the network device that the terminal device currently needs PDCCH enhancement. After receiving the second indication information, the network device can directly determine the resource configuration information of the enhanced PDCCH.

[0202] Specifically, the specific method of determining whether PDCCH enhancement is needed by the terminal device can be the same as the method of determining by the network device, which will not be described here.

[0203] Optionally, the resource configuration information of the PDCCH can be represented by a radio resource control (RRC) parameter, and the RRC parameter includes a plurality of parameters, and the plurality of parameters can collectively represent the resource occupation of the PDCCH.

[0204] In actual application, the control resource set (CORESET) occupied by the PDCCH transmission is composed of 1-3 symbols in the time domain and a plurality of physical resource blocks (PRBs) in the frequency domain.

[0205] In a possible implementation, PDCCH enhancement can include two aspects of enhancement, that is, PDCCH enhancement in the time domain, or PDCCH enhancement in the frequency domain, or PDCCH enhancement in both the time domain and the frequency domain. The following will introduce several enhancement methods.

[0206] 1. PDCCH enhancement in the time domain.

[0207] If PDCCH enhancement is performed in the time domain, the resource configuration information can be determined as the resource configuration information of the PDCCH after PDCCH enhancement in the time domain.

[0208] PDCCH enhancement in the time domain can include the following methods:

[0209] Method 1,

[0210] In one possible implementation, when enhancing the PDCCH in the time domain, the number of consecutive symbols occupied by the PDCCH in a single time slot can be increased. Accordingly, the number of first symbols occupied by the PDCCH in a single time slot after time-domain enhancement is greater than the number of second symbols occupied before PDCCH enhancement.

[0211] For example, when configuring resource information through RRC parameters, the `duration` parameter, representing the number of consecutive symbols occupied by the PDCCH in the time domain, can be provided to the terminal through the `ControlResourceSet` parameter in the RRC parameters. When the enhanced PDCCH occupies m symbols in a single time slot, the value of the `duration` parameter is m.

[0212] Optionally, the number of the first symbol can be twice the number of the second symbol. That is, if the number of consecutive symbols occupied by PDCCH before PDCCH enhancement is n, then the number of consecutive symbols occupied by PDCCH after PDCCH enhancement is 2n.

[0213] In practical applications, the number of the first symbol can also be adjusted according to the actual situation. For example, the number of the first symbol can be 2in, where i is an integer greater than or equal to 1.

[0214] It should be noted that the above extension is based on single-slot extension, which can be considered as extending the control channel element (CCE) within a single time slot.

[0215] In a single time slot, the demodulation reference signal (DMRS) of the PDSCH occupies the symbols following those occupied by the PDCCH. When the symbols occupied by the PDCCH are expanded, the symbols occupied by the DMRS also need to be changed accordingly. The RRC parameter dmrs-TypeA-Position is used to characterize the symbol position occupied by the DMRS, and the value of the RRC parameter dmrs-TypeA-Position also needs to be adjusted accordingly.

[0216] For example, such as Figure 3 As shown, before PDCCH enhancement, PDCCH occupies symbols 1 and 2, and DMRS occupies symbol 3. After PDCCH enhancement, PDCCH occupies symbols 1, 2, 3, and 4, and DMRS occupies symbol 5. Accordingly, the value of dmrs-TypeA-Position should also be updated from pos3 (representing symbol 3) to pos5 (representing symbol 5).

[0217] Method 2

[0218] In another possible implementation, when enhancing the PDCCH in the time domain, the number of time slots for transmitting downlink control information can be increased. Accordingly, the number N of the first time slots N used for transmitting downlink control information corresponding to the PDCCH after time-domain enhancement is greater than the number of the second time slots used for transmitting downlink control information before PDCCH enhancement; N is a positive integer greater than or equal to 2.

[0219] Increasing the number of time slots for transmitting downlink control information can include the following two cases:

[0220] Case 1: The downlink control information bits are randomly distributed across the symbols occupied by the PDCCH in N time slots.

[0221] In this case, it can be understood as distributing downlink control information to N time slots for transmission. For example, before enhancement, downlink control information can only be transmitted through the symbols occupied by the PDCCH in a single time slot, while after enhancement, the downlink control information can be randomly divided into N parts, and each time slot can transmit a part of the downlink control information.

[0222] In this way, the transmitted information can be sparsified, improving transmission reliability. This type of extension is a cross-timeslot extension, which can be considered a cross-timeslot extension CCE.

[0223] For example, when configuring resource information to be represented by RRC parameters, the SearchSpace parameter in RRC parameters can be extended by adding a parameter repetitionnumber1. This parameter can represent the number of extended time slots. That is, when all information bits of downlink control information are randomly distributed across the symbols occupied by PDCCH in N consecutive time slots, the value of repetitionnumber1 is N.

[0224] like Figure 4 As shown, before PDCCH enhancement, downlink control information can be transmitted through the two symbols occupied by PDCCH in a single time slot. After PDCCH enhancement, the same downlink control information can be transmitted through the symbols occupied by PDCCH in two consecutive time slots. That is, the sum of the information transmitted by symbols a1, a2, b1 and b2 is the complete downlink control information.

[0225] In this way, although the bit rate is reduced, there is no need to modify the symbol positions occupied by DMRS in PDSCH, and the transmission of PDSCH will not be affected. Therefore, the same effect of extended CCE can be achieved.

[0226] Optionally, under this enhancement method, the number of symbols occupied by PDCCH in a single time slot can remain unchanged. For example, if the number of symbols occupied by PDCCH in a single time slot is 2 before enhancement, the number of symbols occupied by PDCCH in a single time slot can still be 2 after enhancement.

[0227] Alternatively, the symbols occupied by the PDCCH within a single time slot can also be extended. For example, if the number of symbols occupied by the PDCCH within a single time slot is 2 before enhancement, the number of symbols occupied by the PDCCH within a single time slot can be 4 after enhancement. For specific extension methods, please refer to the description of extending CCE within a single time slot above, which will not be repeated here.

[0228] Scenario 2: N time slots are used to transmit downlink control information N times repeatedly.

[0229] In this scenario, it can be understood that each time slot transmits all the information bits of the downlink control information, and the N time slots are used to transmit the information N times. For example, if before the enhancement, downlink control information could only be transmitted through a single time slot, then after the enhancement, downlink control information can be transmitted through 4 time slots (i.e., N is 4), where each time slot transmits complete downlink control information.

[0230] In this way, downlink control information can be repeatedly transmitted through multiple time slots, improving information robustness.

[0231] For example, when configuring resource information to be represented by RRC parameters, the SearchSpace parameter in RRC parameters can be extended by adding a parameter repetitionnumber2. This parameter can represent the number of repeated transmissions. That is, when downlink control information is repeatedly transmitted through N time slots, the value of repetitionnumber2 is N.

[0232] like Figure 5 As shown, before PDCCH enhancement, downlink control information can be transmitted through the two symbols occupied by PDCCH in a single time slot. After PDCCH enhancement, the same downlink control information can be repeatedly transmitted through the symbols occupied by PDCCH in two consecutive time slots. That is, symbols a1 and a2 transmit complete downlink control information, and symbols b1 and b2 also transmit complete downlink control information.

[0233] This enhancement method does not require bandwidth, does not reduce the bit rate, and does not affect the transmission of PDSCH, thus achieving the same effect as extended CCE.

[0234] Optionally, in this enhancement manner, the number of symbols occupied by the PDCCH in a single time slot can be unchanged, for example, if the number of symbols occupied by the PDCCH in a single time slot before the enhancement is 2, the number of symbols occupied by the PDCCH in a single time slot after the enhancement can still be 2.

[0235] Alternatively, the number of symbols occupied by the PDCCH in a single time slot can also be expanded, for example, if the number of symbols occupied by the PDCCH in a single time slot before the enhancement is 2, the number of symbols occupied by the PDCCH in a single time slot after the enhancement can be 4. The specific expansion manner can refer to the description of the expansion of the CCE in a single time slot above, and will not be described here again.

[0236] It should be noted that in this enhancement manner, the value of N (i.e., the number of repeated transmissions) can be 2x, where x is an integer greater than or equal to 1, and the specific value of the number of repetitions can be set according to actual conditions, which is not limited by the present disclosure.

[0237] 2. Enhancing the PDCCH in the frequency domain.

[0238] If the PDCCH is enhanced in the frequency domain, when determining the resource configuration information, the resource configuration information of the PDCCH after the PDCCH is enhanced in the frequency domain can be determined.

[0239] In a possible implementation, when the PDCCH is enhanced in the frequency domain, the number of PRBs occupied by the PDCCH can be increased. Correspondingly, the number of first physical resource blocks (PRBs) occupied by the PDCCH after the PDCCH is enhanced in the frequency domain is greater than the number of second PRBs occupied before the PDCCH is enhanced.

[0240] For example, when the configuration resource information is represented by an RRC parameter, the parameter frequencyDomainResources in the RRC parameter can be used to provide the terminal with a parameter representing the resources occupied by the PDCCH in the frequency domain.

[0241] Here, the parameter frequencyDomainResources can be presented in a bitmap manner, with a maximum of 45 bits, and each bit can represent a bundle of a resource element group (REG) (i.e., a REG bundle), i.e., 6 PRBs.

[0242] Optionally, the number of first PRBs can be twice the number of second PRBs. If the number of PRBs occupied by the PDCCH before the PDCCH is enhanced is s, the number of PRBs occupied by the PDCCH after the PDCCH is enhanced is 2s.

[0243] In actual applications, the first PRB number can also be adjusted according to actual conditions, for example, the first PRB number can be 2ks, wherein K is an integer greater than or equal to 1.

[0244] Optionally, the parameter aggregationLevel32 can also be added to the nrofCandidates of the RRC parameter to represent the aggregation level of the CCE. Through the parameter aggregationLevel32, the number of CCEs allocated for the PDCCH can be determined, and one CCE can correspond to multiple PRBs.

[0245] For example, the PRB occupation before and after enhancement is as shown in Figure 6 .

[0246] When the PDCCH is expanded in this way, the transmission protocol needs to be changed less, and only the bitmap needs to be adjusted, which is simple to operate.

[0247] It should be noted that the above several enhancement methods can be used at the same time, for example, the number of symbols occupied by the PDCCH on a single time slot can be enhanced, and the PDCCH in the frequency domain can be enhanced, or the number of symbols occupied by the PDCCH on a single time slot can be enhanced, and the number of repeated transmissions of the PDCCH can be increased.

[0248] In a possible implementation, when determining the resource configuration information of the enhanced PDCCH, the available downlink time-frequency resources in the non-terrestrial network can be determined first, and then the resource configuration information of the PDCCH after PDCCH enhancement is determined based on the downlink time-frequency resources.

[0249] Here, since the PDCCH will occupy more time-frequency resources after enhancement, if the time-frequency resources occupied by the PDCCH are too many, although the performance of the PDCCH is guaranteed, other channels (such as the physical downlink shared channel (PDSCH)) can be affected, therefore, whether to enhance the PDCCH and how to enhance the PDCCH need to be combined with the currently available downlink time-frequency resources, even if the state of the PDCCH is poor.

[0250] For example, when determining the resource configuration information of the PDCCH after PDCCH enhancement based on the downlink time-frequency resources, the enhancement method matching the downlink time-frequency resources can be determined, and then the resource configuration information of the PDCCH under the enhancement method is determined.

[0251] In actual applications, when there are multiple enhanced modes matching the downlink time-frequency resources, one of the resource matching information can be randomly selected or selected according to a pre-set priority, and the present disclosure is not limited in this regard.

[0252] Based on the same concept, the present disclosure also provides an information transmission method, as shown in Figure 7 The present disclosure provides a flowchart of an information transmission method, which is applied to a terminal device and includes the following steps:

[0253] S701, receiving resource configuration information of a PDCCH enhanced in a non-terrestrial network.

[0254] S702, receiving the enhanced PDCCH based on the resource configuration information.

[0255] Optionally, receiving the enhanced PDCCH based on the resource configuration information can mean determining a search space based on the resource configuration information, and blindly searching for a possible PDCCH in the search space according to the resource configuration information. After searching for the PDCCH, the terminal device can receive downlink control information through the PDCCH.

[0256] In a possible implementation, before receiving the resource configuration information of the PDCCH enhanced in the non-terrestrial network, the terminal device can first determine and send PDCCH state information to the network device.

[0257] Optionally, the PDCCH state information includes reference signal received power (RSRP), and when determining the RSRP, the terminal device can determine the RSRP based on a received synchronization signal block (SSB). The SSB includes a synchronization signal and a physical broadcast channel (PBCH).

[0258] Optionally, the PDCCH state information can also include channel quality indicator (CQI) information, and when determining the CQI information, the terminal device can determine a signal-to-interference-plus-noise ratio (SINR) based on a received channel state information (CSI), and then determine the CQI information according to the SINR.

[0259] Alternatively, the terminal device can directly send the CQI information to the network device, and the network device directly determines whether PDCCH enhancement is needed based on the CQI information.

[0260] In another possible implementation, the terminal device can further determine, after determining the state information of the PDCCH, whether PDCCH enhancement is needed according to the state information of the PDCCH, and in the case where it is determined that PDCCH enhancement is needed, send second indication information to the network device, the second indication information being used to indicate that the terminal device supports PDCCH enhancement. Through the second indication information, the network device can be implicitly indicated that the terminal device needs PDCCH enhancement. Correspondingly, the network device can directly determine the resource configuration information of the enhanced PDCCH after receiving the second indication information.

[0261] Alternatively, the terminal device can send the second indication information synchronously when sending the PDCCH state information to the network device, and the network device can determine the resource configuration information of the enhanced PDCCH based on the state information when it is determined that enhancement is needed after receiving the state information.

[0262] In a possible implementation, the resource configuration information of the PDCCH after PDCCH enhancement includes resource configuration information of the PDCCH after PDCCH enhancement in the time domain.

[0263] In a possible implementation, the number of first symbols occupied by the PDCCH after PDCCH enhancement in the time domain in a single time slot is greater than the number of second symbols occupied before PDCCH enhancement.

[0264] The number of first time slots corresponding to the PDCCH after PDCCH enhancement for transmitting downlink control information is greater than the number of second time slots for transmitting downlink control information before PDCCH enhancement. N is a positive integer greater than or equal to 2.

[0265] In a possible implementation, each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots.

[0266] In a possible implementation, the N time slots are used for N times of repeated transmission of the downlink control information.

[0267] In a possible implementation, the number of first symbols is twice the number of second consecutive symbols.

[0268] In a possible implementation, the resource configuration information of the PDCCH after PDCCH enhancement includes resource configuration information of the PDCCH after PDCCH enhancement in the frequency domain. The number of first physical resource blocks (PRBs) occupied by the PDCCH after PDCCH enhancement in the frequency domain is greater than the number of second PRBs occupied before PDCCH enhancement.

[0269] In a possible implementation, the first PRB number is twice the second PRB number.

[0270] In a possible implementation, if each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots (i.e., the PDCCH is enhanced based on the above case one), when the terminal device receives the enhanced PDCCH based on the resource configuration information, each information bit transmitted in the N time slots can be received, and each received information bit is combined and then decoded.

[0271] Specifically, because the information bits of the downlink control information are randomly distributed in the N time slots when the PDCCH is enhanced based on the above case one, after the information is received, the information needs to be combined and then decoded to obtain all the information bits of the downlink control information.

[0272] In a possible implementation, if the N time slots are used for N times of repeated transmission of the downlink control information (i.e., the PDCCH is enhanced based on the above case two), when the terminal device receives the enhanced PDCCH based on the resource configuration information, N downlink control information repeatedly transmitted in the N time slots can be received, and the N received downlink control information is jointly decoded.

[0273] Specifically, because the downlink control information is repeatedly transmitted N times by the N time slots when the PDCCH is enhanced based on the above case two, but because of poor channel performance, a single time slot transmission can not be correctly decoded, therefore, the downlink control information transmitted by each time slot needs to be jointly decoded to improve the signal strength and the signal-to-noise ratio (SNR), so that the PDCCH can be correctly received (i.e., complete downlink control information is obtained).

[0274] Next, the above information transmission method is exemplarily introduced in combination with specific examples.

[0275] Example one (corresponding to the above method one),

[0276] 1. The terminal device receives an SSB, and calculates an RSRP based on the SSB.

[0277] 2. The terminal device sends the RSRP to the base station, and the base station compares the RSRP with a first threshold value. In the case where the RSRP is less than the first threshold value, it is determined that PDCCH enhancement is needed.

[0278] 3、The base station determines the time-frequency resources available for the current downlink, and sets the RRC parameters. The duration in the ControlResourceSet in the RRC parameters is configured as 4, and the parameter frequencyDomainResources is configured as …111111110000…

[0279] 4、The base station configures a CORESET with a symbol number of 4 and a PRB number of 48 in a single time slot for transmitting PDCCH according to the RRC parameters.

[0280] 5、The base station sends the configured RRC parameters to the terminal device, and the terminal device blindly detects PDCCH candidates based on the CORESET in the search space determined based on the RRC parameters.

[0281] Example two (corresponding to case one in the above-mentioned way two),

[0282] 1、The terminal device receives CSI from the base station, determines SINR based on the CSI, and determines CQI based on the SINR.

[0283] 2、The terminal device sends the CQI to the base station, the base station determines the SINR based on the CQI, and compares the SINR with the second threshold value, in the case where the SINR is less than the second threshold value, it is determined that PDCCH enhancement is needed.

[0284] 3、The base station determines the time-frequency resources available for the current downlink, and configures the RRC parameter repetitionnumber1 as 2.

[0285] 4、The base station configures the time-frequency resources for PDCCH as a symbol number of 2 in a single time slot and a PRB number of 48, and carries all information bits of the downlink control information on the PDCCH of the consecutive 2 time slots in the listening period.

[0286] 5、The base station sends the RRC parameters to the terminal device, and the terminal device receives PDCCH in the consecutive two time slots in the CORESET and search space determined based on the RRC parameters, and merges and decodes the received PDCCH.

[0287] Example three (corresponding to case two in the above-mentioned way two),

[0288] 1、The terminal device receives SSB, and calculates RSRP based on SSB.

[0289] 2、The terminal device sends RSRP to the base station, and the base station compares RSRP with the first threshold value, in the case where RSRP is less than the first threshold value, it is determined that PDCCH enhancement is needed.

[0290] 3、The base station determines the time-frequency resources available for the current downlink, sets the RRC parameters. Configure duration in ControlResourceSet in RRC parameters as 2, parameter frequencyDomainResources as …1111111111111111000…, parameter nrofCandidates as aggregationLevel32.

[0291] 4、The base station configures a CORESET with a symbol number of 2 and a PRB number of 96 in a single time slot for transmitting PDCCH according to the RRC parameters.

[0292] 5、The base station sends the configured RRC parameters to the terminal device, and the terminal device blindly detects PDCCH candidates based on the CORESET in the search space determined based on the RRC parameters.

[0293] Example four (corresponding to the above PDCCH enhancement in the frequency domain),

[0294] 1、The terminal device receives CSI from the base station, determines SINR based on the CSI, and determines CQI based on the SINR.

[0295] 2、The terminal device sends CQI to the base station, and the base station determines SINR based on the CQI and compares the SINR with the second threshold. If the SINR is less than the second threshold, it is determined that PDCCH enhancement is needed.

[0296] 3、The base station determines the time-frequency resources available for the current downlink, and configures the RRC parameter repetitionnumber2 as 4.

[0297] 4、The base station configures the time-frequency resources for PDCCH as a symbol number of 2 and a PRB number of 48 in a single time slot, and repeatedly transmits downlink control information in consecutive 4 time slots.

[0298] 5、The base station sends the RRC parameters to the terminal device, and the terminal device receives PDCCH in consecutive four time slots and jointly decodes the received PDCCH in the CORESET and search space determined based on the RRC parameters.

[0299] For detailed description of the above examples, refer to the above embodiments, and the present disclosure will not be repeated.

[0300] The information transmission method provided in this disclosure can determine the resource configuration information of the enhanced PDCCH in an NTN scenario through a network device, and then send the PDCCH resource configuration information to the terminal device. In this way, the network device can configure the enhanced PDCCH based on the resource configuration information and transmit information to the terminal device through the enhanced PDCCH. The terminal device can also receive the enhanced PDCCH based on the resource configuration information, thereby improving the performance of the PDCCH and enhancing the stability of downlink control information transmission.

[0301] Reference Figure 8 The diagram shown is a schematic representation of an information transmission device provided in an embodiment of this disclosure. This device can be deployed in a network device and may include:

[0302] The memory 810 is used to store computer programs; the transceiver 820 is used to receive and send data under the control of the processor 830.

[0303] Among them, Figure 8 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (processor 830) and memory (memory 810). The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 820 can be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. The processor 830 is responsible for managing the bus architecture and general processing, and the memory 810 can store data used by the processor 830 during operation.

[0304] The processor 830 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

[0305] The processor 830 invokes a computer program stored in the memory 810 to execute the steps of any of the methods provided in the embodiments of this disclosure according to the obtained executable instructions, for example:

[0306] Determine resource configuration information of a PDCCH after PDCCH enhancement in a non-terrestrial network;

[0307] Send the resource configuration information of the PDCCH to a terminal device.

[0308] In a possible implementation, before determining the resource configuration information of the PDCCH after PDCCH enhancement in a non-terrestrial network, the method further includes:

[0309] Receive PDCCH state information sent by the terminal device;

[0310] Determine that PDCCH enhancement is needed according to the PDCCH state information.

[0311] In a possible implementation, the PDCCH state information includes reference signal received power (RSRP).

[0312] The determining that PDCCH enhancement is needed according to the PDCCH state information includes:

[0313] Determine that PDCCH enhancement is needed when the RSRP is less than a first threshold.

[0314] In a possible implementation, the PDCCH state information includes channel quality indicator (CQI) information.

[0315] The determining that PDCCH enhancement is needed according to the PDCCH state information includes:

[0316] Determine a signal-to-interference-plus-noise ratio (SINR) of the downlink based on the CQI information.

[0317] Determine that PDCCH enhancement is needed when the SINR is less than a second threshold.

[0318] In a possible implementation, the determining the resource configuration information of the PDCCH after PDCCH enhancement includes:

[0319] Determine resource configuration information of the PDCCH after PDCCH enhancement in a time domain.

[0320] In a possible implementation, a first number of symbols occupied by the PDCCH after PDCCH enhancement in the time domain is greater than a second number of symbols occupied before PDCCH enhancement; or,

[0321] A first number of time slots corresponding to the PDCCH after PDCCH enhancement in the time domain for transmitting downlink control information is greater than a second number of time slots for transmitting downlink control information before PDCCH enhancement; N is a positive integer greater than or equal to 2.

[0322] In one possible implementation, the number of the first symbol is twice the number of the second symbol.

[0323] In one possible implementation, the information bits of the downlink control information are randomly distributed across the symbols occupied by the PDCCH within N time slots.

[0324] In one possible implementation, N time slots are used to transmit downlink control information N times repeatedly.

[0325] In one possible implementation, determining the resource configuration information of the PDCCH after PDCCH enhancement includes:

[0326] Determine the resource configuration information of the PDCCH after PDCCH enhancement in the frequency domain; wherein, the number of first physical resource blocks (PRBs) occupied by the PDCCH after PDCCH enhancement in the frequency domain is greater than the number of second PRBs occupied before PDCCH enhancement.

[0327] In one possible implementation, the number of the first PRB is twice the number of the second PRB.

[0328] In one possible implementation, determining the resource configuration information of the PDCCH after PDCCH enhancement in a non-terrestrial network includes:

[0329] Determine the downlink time-frequency resources currently available in non-terrestrial networks;

[0330] Based on downlink time-frequency resources, determine the resource configuration information of the PDCCH after PDCCH enhancement.

[0331] Reference Figure 9 The diagram shown is a schematic representation of an information transmission device provided in an embodiment of this disclosure. This device can be deployed on a terminal device and may include:

[0332] The memory 910 is used to store computer programs; the transceiver 920 is used to receive and send data under the control of the processor 930.

[0333] Among them, Figure 9In particular embodiments, bus architecture can include any number of interconnecting buses and bridges, depending on the specific application of processor 930 and the overall design constraints. Bus architecture can link together various circuits such as one or more processors represented by processor 930, and memory represented by memory 910, that can be configured to communicate over the bus architecture. Bus architecture can also link various other circuits such as peripheral devices, voltage regulators and power management circuitry, which are well known in the art, and thus, not further described herein. Bus interface provides an interface. Transceiver 920 can be a plurality of elements, including a transmitter and a receiver, that provides a means for communicating with various other apparatus over a transmission medium, including a wireless channel, a wired channel, optical cable, and the like. Processor 930 is responsible for managing the bus architecture and general processing, including the execution of software stored in memory 910.

[0334] Processor 930 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or complex programmable logic device (CPLD), processor 930 can also be a multi-core architecture.

[0335] Processor 930, by invoking stored computer program instructions in memory 910, can be used to implement any of the steps for the methods provided by embodiments of the present disclosure, for example:

[0336] receiving resource configuration information of a PDCCH enhanced in a non-terrestrial network;

[0337] receiving the enhanced PDCCH based on the resource configuration information.

[0338] In one possible implementation, before receiving the resource configuration information of the PDCCH enhanced in the non-terrestrial network, the processor is further configured to perform:

[0339] determining and sending PDCCH state information.

[0340] In one possible implementation, the PDCCH state information includes reference signal received power (RSRP);

[0341] determining the PDCCH state information includes:

[0342] determining the RSRP based on a received synchronization signal block (SSB).

[0343] In one possible implementation, the PDCCH state information includes channel quality indicator (CQI) information;

[0344] determining PDCCH state information, comprising:

[0345] determining a signal to interference plus noise ratio (SINR) based on the received channel state information (CSI);

[0346] determining CQI information according to the SINR.

[0347] In a possible implementation, the resource configuration information of the PDCCH after the PDCCH enhancement includes resource configuration information of the PDCCH after the PDCCH enhancement in the time domain.

[0348] In a possible implementation, the PDCCH after the PDCCH enhancement occupies a first number of symbols in a single time slot in the time domain, which is greater than a second number of symbols occupied before the PDCCH enhancement; or,

[0349] The PDCCH after the PDCCH enhancement corresponds to a first number N of time slots for transmitting downlink control information, which is greater than a second number of time slots for transmitting downlink control information before the PDCCH enhancement; N is a positive integer greater than or equal to 2.

[0350] In a possible implementation, the first number of symbols is twice the second number of consecutive symbols.

[0351] In a possible implementation, each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots.

[0352] In a possible implementation, the N time slots are used for N times of repeated transmission of the downlink control information.

[0353] In a possible implementation, the resource configuration information of the PDCCH after the PDCCH enhancement includes resource configuration information of the PDCCH after the PDCCH enhancement in the frequency domain; wherein the PDCCH after the PDCCH enhancement occupies a first number of physical resource blocks (PRBs) in the frequency domain, which is greater than a second number of PRBs occupied before the PDCCH enhancement.

[0354] In a possible implementation, the first number of PRBs is twice the second number of PRBs.

[0355] In a possible implementation, if each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots, receiving the PDCCH after the enhancement based on the resource configuration information includes:

[0356] receive each information bit transmitted on the N time slots, and combine and decode the received each information bit.

[0357] In a possible implementation, if the N time slots are used for N times of repeated transmission of the downlink control information, receiving information of the enhanced PDCCH transmission based on the resource configuration information includes:

[0358] receive N pieces of downlink control information repeatedly transmitted on the N time slots, and jointly decode the received N pieces of downlink control information.

[0359] Referring to Figure 10 As shown in the figure, an information transmission device provided by an embodiment of the present disclosure is provided, which can be applied to a network device, and the device includes:

[0360] A determination module 1001 is configured to determine resource configuration information of an enhanced PDCCH of a PDCCH in a non-terrestrial network.

[0361] A first sending module 1002 is configured to send the resource configuration information of the PDCCH to a terminal device.

[0362] In a possible implementation, before determining the resource configuration information of the enhanced PDCCH of the PDCCH in the non-terrestrial network, the determination module 1001 is further configured to:

[0363] receive PDCCH state information sent by the terminal device.

[0364] determine that PDCCH enhancement is needed according to the PDCCH state information.

[0365] In a possible implementation, the PDCCH state information includes reference signal received power (RSRP).

[0366] When it is determined that the PDCCH enhancement is needed according to the PDCCH state information, the determination module 1001 is configured to:

[0367] determine that the PDCCH enhancement is needed when the RSRP is less than a first threshold.

[0368] In a possible implementation, the PDCCH state information includes channel quality indicator (CQI) information.

[0369] When it is determined that the PDCCH enhancement is needed according to the PDCCH state information, the determination module 1001 is configured to:

[0370] determine a signal to interference plus noise ratio (SINR) of the downlink based on the CQI information.

[0371] In a case where the SINR is less than a second threshold value, it is determined that PDCCH enhancement is needed.

[0372] In a possible implementation, the determining module 1001, when determining the resource configuration information of the PDCCH after the PDCCH enhancement, is configured to:

[0373] determine the resource configuration information of the PDCCH after the PDCCH enhancement in the time domain.

[0374] In a possible implementation, the PDCCH after the PDCCH enhancement in the time domain occupies a first number of symbols in a single time slot, which is greater than a second number of symbols before the PDCCH enhancement; or,

[0375] The PDCCH after the PDCCH enhancement in the time domain corresponds to a first number of time slots N for transmitting downlink control information, which is greater than a second number of time slots for transmitting downlink control information before the PDCCH enhancement; N is a positive integer greater than or equal to 2.

[0376] In a possible implementation, the first number of symbols is twice the second number of symbols.

[0377] In a possible implementation, each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots.

[0378] In a possible implementation, the N time slots are used for N times of repeated transmission of the downlink control information.

[0379] In a possible implementation, the determining module 1001, when determining the resource configuration information of the PDCCH after the PDCCH enhancement, is configured to:

[0380] determine the resource configuration information of the PDCCH after the PDCCH enhancement in the frequency domain; wherein the PDCCH after the PDCCH enhancement in the frequency domain occupies a first number of physical resource blocks (PRBs), which is greater than a second number of PRBs before the PDCCH enhancement.

[0381] In a possible implementation, the first number of PRBs is twice the second number of PRBs.

[0382] In a possible implementation, the determining module 1001, when determining the resource configuration information of the PDCCH after the PDCCH enhancement, is configured to:

[0383] determine a downlink time-frequency resource currently available in the non-terrestrial network;

[0384] Determine resource configuration information of the PDCCH after PDCCH enhancement based on downlink time-frequency resources.

[0385] Referring to Figure 11 As shown in the figure, the device can be applied to a terminal device, and the device includes:

[0386] The first receiving module 1101 is configured to receive resource configuration information of the PDCCH after PDCCH enhancement in a non-terrestrial network.

[0387] The second receiving module 1102 is configured to receive the enhanced PDCCH based on the resource configuration information.

[0388] In a possible implementation, the device further includes a second sending module 1103 configured to determine and send PDCCH state information before receiving the resource configuration information of the PDCCH after PDCCH enhancement in the non-terrestrial network.

[0389] In a possible implementation, the PDCCH state information includes reference signal received power (RSRP).

[0390] The second sending module 1103 is configured to:

[0391] Determine the RSRP based on a received synchronization signal block (SSB).

[0392] In a possible implementation, the PDCCH state information includes channel quality indicator (CQI) information.

[0393] The second sending module 1103 is configured to:

[0394] Determine a signal-to-interference-plus-noise ratio (SINR) based on a received channel state information (CSI).

[0395] Determine the CQI information according to the SINR.

[0396] In a possible implementation, the resource configuration information of the PDCCH after PDCCH enhancement includes resource configuration information of the PDCCH after PDCCH enhancement in a time domain.

[0397] In a possible implementation, a first number of symbols occupied by the PDCCH after PDCCH enhancement in the time domain within a single time slot is greater than a second number of symbols occupied before PDCCH enhancement.

[0398] The first number of time slots N corresponding to the PDCCH after PDCCH enhancement in the time domain for transmitting downlink control information is greater than the second number of time slots for transmitting downlink control information before PDCCH enhancement; N is a positive integer greater than or equal to 2.

[0399] In a possible implementation, the first number of symbols is twice the second number of consecutive symbols.

[0400] In a possible implementation, each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots.

[0401] In a possible implementation, the N time slots are used for N times of repeated transmission of the downlink control information.

[0402] In a possible implementation, the resource configuration information of the PDCCH after PDCCH enhancement includes: resource configuration information of the PDCCH after PDCCH enhancement in the frequency domain; wherein the first number of physical resource blocks (PRBs) occupied by the PDCCH after PDCCH enhancement in the frequency domain is greater than the second number of PRBs occupied before PDCCH enhancement.

[0403] In a possible implementation, the first number of PRBs is twice the second number of PRBs.

[0404] In a possible implementation, if each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots, the second receiving module 1102, when receiving the enhanced PDCCH based on the resource configuration information, is configured to:

[0405] receive each information bit transmitted in the N time slots, and combine and then decode the received each information bit.

[0406] In a possible implementation, if the N time slots are used for N times of repeated transmission of the downlink control information, the second receiving module 1102, when receiving the enhanced PDCCH based on the resource configuration information, is configured to:

[0407] receive N times of downlink control information repeatedly transmitted in the N time slots, and jointly decode the received N times of downlink control information.

[0408] It should be noted that the division of the units in the embodiments of the present disclosure is illustrative, and is only a logical function division. In actual implementation, another division manner can be used. In addition, each functional unit in each embodiment of the present disclosure can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0409] If the integrated unit is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solutions of the present disclosure, essentially or in part, or all or part of the technical solutions, can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods in the various embodiments of the present disclosure. The foregoing storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, and various other media that can store program codes.

[0410] It should be noted that the above device provided by the embodiments of the present disclosure can realize all method steps realized by the above method embodiments, and can achieve the same technical effects. The same parts and beneficial effects in the embodiments will not be described in detail.

[0411] On the other hand, the embodiments of the present disclosure also provide a computer readable storage medium, which stores a computer program. The computer program is used to make a computer execute the information transmission method provided by each of the above embodiments.

[0412] It should be noted that the computer readable storage medium provided by the embodiments of the present disclosure can realize all method steps realized by the above method embodiments, and can achieve the same technical effects. The same parts and beneficial effects in the embodiments will not be described in detail.

[0413] The computer readable storage medium can be any available medium or data storage that can be accessed by a computer including, but not limited to, magnetic storage (e.g., diskette, hard drive, tape, MO, etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor storage (e.g., ROM, EPROM, EEPROM, NAND FLASH, SSD, etc.). The computer readable storage medium can also be distributed over network-coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

[0414] The embodiments of the present disclosure further provide a computer program product, which, when invoked by a computer, causes the computer to perform the steps of the information transmission method.

[0415] Those skilled in the art will understand that the embodiments of the present disclosure can be provided as methods, systems, or computer program products. Therefore, the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present disclosure can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage, etc.) containing computer-usable program code.

[0416] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and a combination of flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing apparatus generate a means for implementing the functions specified in the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 an apparatus that performs the functions specified in one or more flows and / or blocks.

[0417] These processor executable instructions can also be stored in a processor readable memory that can direct the computer or other programmable data processing apparatus to work in a specific manner, so that the instructions stored in the processor readable memory produce a manufactured product including instruction apparatus, which implements the functions specified in the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 an apparatus that performs the functions specified in one or more flows and / or blocks.

[0418] These processor executable instructions can also be loaded into a computer or other programmable data processing apparatus, so that a series of operation steps are performed on the computer or other programmable device to produce a computer implemented process, so that the instructions executed on the computer or other programmable device provide a means for implementing the functions specified in the flowcharts and / or block diagrams.Figure 1 one or more processes and / or functions specified in one or more blocks Figure 1 one or more blocks or steps of the functions specified in the one or more blocks.

[0419] It will be apparent to those skilled in the art that various modifications and variations can be made to the disclosed disclosure without departing from the spirit or scope of the disclosure. Thus, it is intended that the disclosure cover the modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalents.

Claims

1. A method of information transmission, characterized in that, The method is applied to a network device and comprises the following steps: determining resource configuration information of a PDCCH enhanced in a non-terrestrial network; sending the resource configuration information of the PDCCH to a terminal device.

2. The method of claim 1, wherein, Before the step of determining the resource configuration information of the PDCCH enhanced in the non-terrestrial network, the method further comprises the following steps: receiving PDCCH state information sent by the terminal device; determining that PDCCH enhancement is needed according to the PDCCH state information.

3. The method of claim 2, wherein, The PDCCH state information comprises reference signal received power (RSRP). The step of determining that PDCCH enhancement is needed according to the PDCCH state information comprises the following steps: determining that PDCCH enhancement is needed when the RSRP is less than a first threshold value.

4. The method of claim 2, wherein, The PDCCH state information comprises channel quality indicator (CQI) information. The step of determining that PDCCH enhancement is needed according to the PDCCH state information comprises the following steps: determining a signal to interference plus noise ratio (SINR) of a downlink based on the CQI information; and determining that PDCCH enhancement is needed when the SINR is less than a second threshold value.

5. The method of claim 1, wherein, The step of determining the resource configuration information of the PDCCH enhanced comprises the following steps: determining resource configuration information of the PDCCH enhanced in a time domain.

6. The method of claim 5, wherein, The PDCCH enhanced in the time domain occupies a first number of symbols in a single time slot, which is greater than a second number of symbols before the PDCCH is enhanced; or the PDCCH enhanced in the time domain corresponds to a first number of time slots N used for transmitting downlink control information, which is greater than a second number of time slots used for transmitting downlink control information before the PDCCH is enhanced; N is a positive integer greater than or equal to 2.

7. The method of claim 6, wherein, The first number of symbols is twice the second number of symbols.

8. The method of claim 6, wherein, Each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots.

9. The method of claim 6, wherein, The N time slots are used for N times of repeated transmission of the downlink control information.

10. The method of claim 1, wherein, The step of determining the resource configuration information of the PDCCH enhanced comprises the following steps: determining resource configuration information of the PDCCH enhanced in a frequency domain; wherein the PDCCH enhanced in the frequency domain occupies a first number of physical resource blocks (PRBs), which is greater than a second number of PRBs before the PDCCH is enhanced.

11. The method of claim 10, wherein, The first number of PRBs is twice the second number of PRBs.

12. The method of claim 1, wherein, The step of determining the resource configuration information of the PDCCH enhanced in the non-terrestrial network comprises the following steps: determining downlink time-frequency resources available in the non-terrestrial network at present; and determining the resource configuration information of the PDCCH enhanced based on the downlink time-frequency resources.

13. An information transmission method characterized by comprising: The method is applied to a terminal device and comprises the following steps: receiving resource configuration information of a PDCCH enhanced in a non-terrestrial network; receiving the PDCCH enhanced based on the resource configuration information.

14. The method of claim 13, wherein, Before receiving resource configuration information of the PDCCH enhanced in the non-terrestrial network, the method further comprises: determining and sending PDCCH state information.

15. The method of claim 14, wherein, The PDCCH state information comprises reference signal received power RSRP; determining PDCCH state information, comprising: determining the RSRP based on the received synchronization signal block SSB.

16. The method of claim 14, wherein, The PDCCH state information comprises channel quality indicator CQI information; determining PDCCH state information, comprising: determining the signal to interference plus noise ratio SINR based on the received channel state information CSI; determining the CQI information according to the SINR.

17. The method of claim 13, wherein, The resource configuration information of the PDCCH enhanced in the time domain comprises the resource configuration information of the PDCCH enhanced in the time domain.

18. The method of claim 17, wherein, The first number of symbols occupied by the PDCCH enhanced in the time domain within a single time slot is greater than the second number of symbols occupied before the PDCCH is enhanced; or, The first number of time slots N corresponding to the PDCCH enhanced in the time domain for transmitting downlink control information is greater than the second number of time slots for transmitting downlink control information before the PDCCH is enhanced. N is a positive integer greater than or equal to 2.

19. The method of claim 18, wherein, The first number of symbols is twice the second number of symbols.

20. The method of claim 18, wherein, Each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH within the N time slots.

21. The method of claim 18, wherein, The N time slots are used for N times of repeated transmission of the downlink control information.

22. The method of claim 13, wherein, The resource configuration information of the PDCCH enhanced in the frequency domain comprises the resource configuration information of the PDCCH enhanced in the frequency domain. The first number of physical resource blocks PRBs occupied by the PDCCH enhanced in the frequency domain is greater than the second number of PRBs occupied before the PDCCH is enhanced.

23. The method of claim 22, wherein, The first number of PRBs is twice the second number of PRBs.

24. The method of claim 20, wherein, If each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH within the N time slots, the receiving of the enhanced PDCCH based on the resource configuration information comprises: receiving each information bit transmitted on the N time slots and combining the received each information bit before decoding.

25. The method of claim 21, wherein, If the N time slots are used for N times of repeated transmission of the downlink control information, the receiving of the information transmitted based on the resource configuration information of the enhanced PDCCH comprises: receiving N downlink control information repeatedly transmitted on the N time slots and jointly decoding the received N downlink control information.

26. An information transmission apparatus, characterized by comprising: deployed in a network device, comprising a memory, a transceiver, a processor; The memory is used to store computer programs; the transceiver is used to transceive data under the control of the processor; and the processor is used to read the computer programs in the memory and perform the following operations: determining the resource configuration information of the PDCCH enhanced in the non-terrestrial network; Send resource configuration information of the PDCCH to a terminal device.

27. The apparatus of claim 26, wherein, Before determining resource configuration information of a PDCCH enhanced in a non-terrestrial network, the method further comprises: Receiving PDCCH state information sent by the terminal device; Determining that PDCCH enhancement is needed according to the PDCCH state information.

28. The apparatus of claim 27, wherein, The PDCCH state information comprises reference signal received power (RSRP); The determining that PDCCH enhancement is needed according to the PDCCH state information comprises: In a case where the RSRP is less than a first threshold, determining that PDCCH enhancement is needed.

29. The apparatus of claim 27, wherein, The PDCCH state information comprises channel quality indication (CQI) information; The determining that PDCCH enhancement is needed according to the PDCCH state information comprises: Based on the CQI information, determining a signal to interference plus noise ratio (SINR) of a downlink; In a case where the SINR is less than a second threshold, determining that PDCCH enhancement is needed.

30. The apparatus of claim 26, wherein, The determining resource configuration information of the PDCCH enhanced comprises: Determining resource configuration information of the PDCCH enhanced in a time domain.

31. The apparatus of claim 30, wherein, The PDCCH enhanced in the time domain occupies a first number of symbols in a single time slot, which is greater than a second number of symbols occupied before the PDCCH enhancement; or The PDCCH enhanced in the time domain corresponds to a first number of time slots N used for transmitting downlink control information, which is greater than a second number of time slots used for transmitting downlink control information before the PDCCH enhancement; N is a positive integer greater than or equal to 2.

32. The apparatus of claim 31, wherein, Each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots.

33. The apparatus of claim 31, wherein, The N time slots are used for N times of repeated transmission of the downlink control information.

34. The apparatus of claim 26, wherein, The determining resource configuration information of the PDCCH enhanced comprises: Determining resource configuration information of the PDCCH enhanced in a frequency domain; wherein the PDCCH enhanced in the frequency domain occupies a first number of physical resource blocks (PRBs), which is greater than a second number of PRBs occupied before the PDCCH enhancement.

35. The apparatus of claim 26, wherein, The determining resource configuration information of the PDCCH enhanced in the non-terrestrial network comprises: Determining downlink time-frequency resources currently available in the non-terrestrial network; Based on the downlink time-frequency resources, determining resource configuration information of the PDCCH enhanced.

36. An information transmission apparatus, characterized by comprising: A terminal device comprises a memory, a transceiver, and a processor; The memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations: Receiving resource configuration information of a PDCCH enhanced in a non-terrestrial network; Based on the resource configuration information, receiving the PDCCH enhanced.

37. The apparatus of claim 36, wherein, Before receiving the resource configuration information of the PDCCH enhanced in the non-terrestrial network, the processor is further configured to perform: determining and sending PDCCH state information.

38. The apparatus of claim 37, wherein, The PDCCH state information includes reference signal received power RSRP; determining the PDCCH state information, including: determining the RSRP based on the received synchronization signal block SSB.

39. The apparatus of claim 37, wherein, The PDCCH state information includes channel quality indicator CQI information; determining the PDCCH state information, including: determining the signal to interference plus noise ratio SINR based on the received channel state information CSI; determining the CQI information according to the SINR.

40. The apparatus of claim 36, wherein, The resource configuration information of the PDCCH enhanced in the time domain includes the resource configuration information of the PDCCH enhanced in the time domain.

41. The apparatus of claim 40, wherein, The number of first symbols occupied by the PDCCH enhanced in the time domain in a single time slot is greater than the number of second symbols occupied before the PDCCH is enhanced; or, The number of first time slots N corresponding to the PDCCH enhanced in the time domain for transmitting downlink control information is greater than the number of second time slots for transmitting downlink control information before the PDCCH is enhanced. N is a positive integer greater than or equal to 2.

42. The apparatus of claim 41, wherein, Each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots.

43. The apparatus of claim 41, wherein, The N time slots are used for N times of repeated transmission of the downlink control information.

44. The apparatus of claim 36, wherein, The resource configuration information of the PDCCH enhanced in the frequency domain includes the resource configuration information of the PDCCH enhanced in the frequency domain. The number of first physical resource blocks PRBs occupied by the PDCCH enhanced in the frequency domain is greater than the number of second PRBs occupied before the PDCCH is enhanced.

45. The apparatus of claim 42, wherein, If each information bit of the downlink control information is randomly distributed on each symbol occupied by the PDCCH in the N time slots, the receiving of the enhanced PDCCH based on the resource configuration information includes: receiving each information bit transmitted in the N time slots, and combining and decoding the received each information bit.

46. The apparatus of claim 43, wherein, If the N time slots are used for N times of repeated transmission of the downlink control information, the receiving of the information transmitted based on the resource configuration information of the enhanced PDCCH includes: receiving N downlink control information repeatedly transmitted in the N time slots, and jointly decoding the received N downlink control information.

47. An information transmission apparatus, characterized by comprising: The apparatus includes: a determining module configured to determine resource configuration information of a physical downlink control channel PDCCH enhanced in a non-terrestrial network; a first sending module configured to send the resource configuration information of the PDCCH to a terminal device.

48. An information transmission apparatus, characterized by comprising: The apparatus includes: a first receiving module configured to receive resource configuration information of a PDCCH enhanced in a non-terrestrial network. A second receiving module is configured to receive the enhanced PDCCH based on the resource configuration information.

49. A processor-readable storage medium, comprising: The processor readable storage medium stores a program, and the program is configured to make the processor execute the information transmission method in any one of claims 1 to 12, or the information transmission method in any one of claims 13 to 25.

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