Communication method and apparatus, storage medium, and computer program product

Abstract

A communication method and apparatus, a storage medium, and a computer program product, which are used for improving the transmission performance. In the present application, when a terminal apparatus misses receiving a signal and / or message, a network apparatus sends a first message on a first frequency-domain resource. The first frequency-domain resource is part of the resources in a first bandwidth, and a power value corresponding to a frequency-domain unit in the first frequency-domain resource is greater than a first power value; therefore, the anti-signal-fading capability of the first message can be improved, and the transmission performance of the first message can thus be improved, such that the terminal apparatus has a relatively high probability of receiving the first message.

Description

A communication method, apparatus, storage medium, and computer program product

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411769121.2, filed on December 3, 2024, entitled "A Communication Method, Apparatus, Storage Medium and Computer Program Product", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of mobile communication technology, and in particular to a communication method, device, storage medium, and computer program product. Background Technology

[0004] Currently, the 5th generation (5G) New Radio (NR) technology is evolving from revision (R) 18 to revision (R19). Simultaneously, NR technology has moved from the standardization phase to the commercial deployment phase. The NR standard protocol is a wireless communication technology designed for terrestrial cellular network scenarios, providing users with ultra-low latency, ultra-reliability, ultra-high speed, and massive connectivity wireless communication services. Compared to terrestrial networks (TN) communication, non-terrestrial networks (NTN) communication features large coverage areas, higher signal loss, and flexible networking, achieving seamless global network coverage. NTN communication utilizes equipment such as drones, high-altitude platforms, and satellites to build networks, providing data transmission, voice communication, and other services to user equipment (UE).

[0005] In some scenarios of terrestrial and / or non-terrestrial communication, improving transmission performance becomes an urgent problem to be solved when there is significant transmission signal loss. Summary of the Invention

[0006] This application provides a communication method, apparatus, storage medium, and computer program product for improving transmission performance by transmitting a first message over a first frequency domain resource. Since the power value corresponding to a frequency domain cell in the first frequency domain resource is greater than a first power value, the transmission performance of the first message can be improved, thereby increasing the success rate of the terminal device receiving the first message.

[0007] To illustrate one possible implementation method provided in this application, in some scenarios of terrestrial and / or non-terrestrial communication, signal transmission suffers significant losses, resulting in poor signal quality, such as signal quality less than (or not greater than) a signal quality threshold. For example, in an NTN communication system, signals need to be transmitted from a satellite to a ground-based terminal device. During signal transmission, various types of obstructions occur, leading to significant transmission losses. In these scenarios, the received signal-to-noise ratio (SNR) is typically low, and these can also be referred to as low SNR scenarios. For example, a low SNR scenario refers to a scenario where the signal reception quality of the terminal device (e.g., the received signal SNR) is below the minimum operating SNR set by the TN network. For example, the minimum operating SNR refers to the SNR of the signal received by the terminal device. If it is lower than the minimum operating SNR, the terminal device cannot receive or demodulate the corresponding signal or channel. Exemplarily, the minimum operating SNR set by the TN network can be (-7) dB, (-6) dB, (-4) dB, etc. For example, in a TN network, different channels typically have different minimum operating signal-to-noise ratios (SNRs). These may include scenarios with SNRs ranging from -15 dB to -20 dB, or other scenarios that can be set according to actual conditions, such as SNRs ranging from -10 dB to -20 dB, or SNRs ranging from -7 dB to -20 dB, or SNRs ranging from -7 dB to -15 dB. In these scenarios, terminal devices are affected by environmental factors, such as potentially experiencing 18 dB of clutter loss. This significant loss affects signal transmission, which in turn affects communication.

[0008] This application provides a possible implementation in which the network device transmits a first message in a first frequency domain resource when the terminal device misses receiving a signal and / or message. Since the first frequency domain resource is a portion of the first bandwidth, and the power value corresponding to a frequency domain unit in the first frequency domain resource is greater than the first power value, the signal fading resistance of the first message can be improved, thereby improving the transmission performance of the first message, and increasing the probability that the terminal device receives the first message.

[0009] As an example of a possible implementation provided in this application, when a terminal device misses receiving signals and / or messages, it may be in an environment with a low SNR (e.g., a user carrying the terminal device may be walking in a forest), where the signal is subject to significant interference. In this case, the probability of the terminal device receiving information is low, and it may be unable to notify the terminal device of any emergency. In one possible implementation of this application, when the terminal device is missing signals and / or messages (e.g., in low SNR scenarios or scenarios with significant signal interference), the network device can transmit the first message on a portion of the resources in the first bandwidth (i.e., the first frequency domain resources). This allows for a greater allocation of power values ​​on the first bandwidth to the first frequency domain resources, thereby increasing the power value corresponding to a frequency domain unit occupied by the first message. This solution can improve the transmission performance of the first message and increase the probability of the terminal device receiving the first message.

[0010] Firstly, this application provides a communication method. This method is executed by a network device. The network device can be a network equipment or a chip (system) within a network equipment.

[0011] In the event that a terminal device misses receiving a signal and / or message, the network device transmits a first message in a first frequency domain resource. The first frequency domain resource is a portion of the resources in a first bandwidth. The power value corresponding to a frequency domain cell in the first frequency domain resource is greater than a first power value, which is determined based on the power value of the first bandwidth and the number of frequency domain cells in the first bandwidth.

[0012] Since the power value corresponding to a frequency domain unit in the first frequency domain resource is greater than the first power value, the anti-signal fading capability of the first message can be improved, thereby improving the transmission performance of the first message, and the terminal device has a higher probability of receiving the first message.

[0013] In one possible implementation, at least two adjacent frequency domain units in the first frequency domain resource are discontinuous frequency domain resources in the first bandwidth. Alternatively, at least two adjacent frequency domain units in the first frequency domain resource are continuous frequency domain resources in the first bandwidth. For example, the first frequency domain resource can be a continuous segment of resources in the first bandwidth. Or, the first frequency domain resource may be a portion of the first bandwidth, occupying a relatively narrow bandwidth; in other words, the first message is transmitted via narrowband. In this scheme, the total bandwidth occupied by the first message is relatively small, therefore the network device can concentrate the power value of the first bandwidth onto a portion of the first bandwidth, thereby increasing the power value of that portion of the bandwidth and thus improving the performance of the first message transmitted on that portion of the bandwidth.

[0014] In one possible implementation, when at least two adjacent frequency domain units in the first frequency domain resource are discontinuous frequency domain resources in the first bandwidth: the first message is mapped to the first bandwidth based on a first comb tooth value, where the first comb tooth value is an integer greater than 1, and at least two adjacent frequency domain units in the first frequency domain resource are frequency domain resources spaced apart by (first comb tooth value - 1) frequency domain resources in the first bandwidth. For example, the first message can be mapped to the first bandwidth, the bandwidth of the first message can be the first bandwidth, and the first message occupies discontinuous frequency domain resources in the first bandwidth, thus achieving frequency diversity gain for transmission.

[0015] In one possible implementation, the first bandwidth is: the bandwidth of a carrier, the bandwidth of a BWP, or the bandwidth configured for a cell. For example, the first bandwidth is the bandwidth occupied by the PDSCH configured by the network device. As another example, the network device can allocate the power value configured on the bandwidth of a carrier, BWP, or cell to the first frequency domain resource. It can be seen that in these implementations, the network device can allocate a larger power value to the first frequency domain resource, thereby improving the transmission performance of the first message.

[0016] In one possible implementation, frequency domain resources in the first bandwidth, other than the first frequency domain resources, are not mapped to information and / or signals. For example, only the first message is transmitted in the first bandwidth, without transmitting other information or other signals. These implementations allow the network device to allocate more (or all) of the power value configured on the first bandwidth to the first message, thereby improving the transmission performance of the first message.

[0017] In one possible implementation, a terminal device missing signals and / or messages includes at least one of the following: the terminal device has missed receiving information; the terminal device has missed receiving a phone call; the terminal device is paged but not paged; the terminal device fails to perform time-frequency synchronization; the terminal device fails to successfully access the network; or, the received signal quality of the terminal device is less than (or not greater than) a signal quality threshold. In these scenarios, the terminal device may be in a state where it is difficult to receive messages, and the terminal device may be unable to receive information with low power values. In these scenarios, the first message sent by the network device in the first frequency domain resource can increase the probability that the terminal device will successfully receive the first message. Furthermore, this solution can more accurately determine the occasion in which the terminal device needs to receive the first message and send the first message for the terminal device in these scenarios, which is more suitable for the actual needs of such terminal devices.

[0018] In one possible implementation, the network device sends first configuration information. This first configuration information includes: information indicating the location of a first frequency domain resource within a first bandwidth, and / or information indicating the number of frequency domain elements in the first frequency domain resource. Based on the first configuration information, the terminal device can detect the first message more quickly, thus reducing the complexity of the solution on the terminal device side.

[0019] In one possible implementation, the first configuration information is carried in at least one of a system message, a main information block (MIB), or a user common message. This increases the probability that the terminal device will successfully receive the first configuration information. For example, the terminal device can receive the first configuration information in an environment with good signal, and then, when entering a scenario with strong signal interference, receive the first message based on the pre-received first configuration information. Because the first configuration information is carried in at least one of a system message, MIB, or user common message, this approach reduces the amount of data the terminal device needs to receive in scenarios with strong signal interference, and also increases the probability that the terminal device will successfully receive the first configuration information.

[0020] In one possible implementation, the network device sends first control information. This first control information includes: information indicating the location of the first frequency domain resource within a first bandwidth, and / or information indicating the number of frequency domain units in the first frequency domain resource. Thus, the network device can dynamically indicate relevant parameters of the first frequency domain resource through the first control information, thereby improving the flexibility of the solution.

[0021] In one possible implementation, the location of the first frequency domain resource in the first bandwidth is associated with the cell transmitting the first message; and / or, the location of the first frequency domain resource in the first bandwidth is associated with the beam footprint of the cell transmitting the first message. Thus, the network device can implicitly indicate the location of the first frequency domain resource in the first bandwidth through the cell and / or beam footprint of the first message, thereby reducing signaling overhead.

[0022] In one possible implementation, the network device sends information indicating the time-domain resources occupied by the first message. The terminal device can receive the first message more quickly based on the information indicating the time-domain resources occupied by the first message.

[0023] In one possible implementation, the network device sends information indicating the power value corresponding to the first frequency domain resource. The terminal device can measure the current path loss based on the information indicating the power value corresponding to the first frequency domain resource. Furthermore, the terminal device can also determine whether the current coverage is limited based on the path loss value. The terminal device can also report this path loss value to the network device when the opportunity arises, so that the network device can determine the current link quality.

[0024] In one possible implementation, information indicating the power value corresponding to the first frequency domain resource is carried in at least one of a system message, a MIB, or a user common message; and / or, information indicating the time domain resource occupied by the first message is carried in at least one of a system message, a MIB, or a user common message. This increases the probability that the terminal device can successfully receive this information. Furthermore, carrying this information in at least one of a system message, a MIB, or a user common message reduces the amount of data the terminal device needs to receive in scenarios with strong signal interference, and also increases the probability that the terminal device can successfully receive the first configuration information.

[0025] Secondly, this application provides a communication method. This method is executed by a network device. The network device can be a network equipment or a chip (system) within a network equipment.

[0026] The network device transmits second control information using a second frequency domain resource, which is a portion of the second bandwidth. The power value corresponding to a frequency unit in the second frequency domain resource is greater than a second power value, which is determined based on the power value of the second bandwidth and the number of frequency units in the second bandwidth. Because the power value corresponding to a frequency unit in the second frequency domain resource is greater than the second power value, the signal fading resistance of the second control information is improved, thereby enhancing its transmission performance and increasing the probability that the terminal device will receive the second control information.

[0027] In one possible implementation, at least two adjacent frequency domain units in the second frequency domain resource are discontinuous frequency domain resources in the second bandwidth; or, at least two adjacent frequency domain units in the second frequency domain resource are continuous frequency domain resources in the second bandwidth. For example, the second frequency domain resource can be a continuous segment of resources in the second bandwidth. For example, the second frequency domain resource may be a portion of the second bandwidth, occupying a relatively narrow bandwidth; in other words, the second control information is transmitted via narrowband. In this scheme, the total bandwidth occupied by the second control information is relatively small, therefore the network device can concentrate the power value of the second bandwidth onto a portion of the second bandwidth, thereby increasing the power value of that portion of the bandwidth and thus improving the performance of the second control information transmitted on that portion of the bandwidth.

[0028] For example, if at least two adjacent frequency domain units in the second frequency domain resources are discontinuous frequency domain resources in the second bandwidth: the second control information is mapped to the second bandwidth based on a second comb tooth value, where the second comb tooth value is an integer greater than 1. At least two adjacent frequency domain units in the second frequency domain resources are frequency domain resources spaced apart by (first comb tooth value - 1) frequency domain resources in the second bandwidth. In this scheme, the total bandwidth occupied by the second control information can be the second bandwidth itself. Since the frequency domain resources occupied by the second control information are a portion of the resources in the second bandwidth, the network device can concentrate the power value of the second bandwidth onto a portion of the second bandwidth, thereby increasing the power value of that portion of the bandwidth and thus improving the performance of the second control information transmitted on that portion of the bandwidth.

[0029] In one possible implementation, the second bandwidth is: the bandwidth of a carrier, the bandwidth of a bandwidth part (BWP), or the bandwidth configured on the cell. For example, the second bandwidth is the bandwidth occupied by the physical downlink control channel (PDCCH) configured by the network device. As another example, the network device can allocate the power value configured on the bandwidth of a carrier, BWP, or cell to the second frequency domain resources. It can be seen that in these implementations, the network device can allocate a larger power value to the second frequency domain resources, thereby improving the transmission performance of the first message.

[0030] In one possible implementation, frequency domain resources in the second bandwidth, other than those in the second frequency domain, are not mapped to information and / or signals. For example, only second control information is transmitted in the second bandwidth, without transmitting other information or signals. These implementations allow the network device to allocate more (or all) of the power values ​​configured on the second bandwidth to the second control information, thereby improving the transmission performance of the second control information.

[0031] In one possible implementation, the network device sends second configuration information. For example, the second configuration information includes at least one of the following: information indicating the location of the second frequency domain resource within the second bandwidth; information indicating the bandwidth size of the second frequency domain resource; information indicating the power value corresponding to the second frequency domain resource; or information indicating the time domain resources occupied by the second control information. The terminal device can detect the second control information more quickly based on the second configuration information, which reduces the complexity of the solution on the terminal device side.

[0032] In one possible implementation, the second configuration information is carried in a system message, a MIB, or a user common message. This increases the probability that the terminal device can successfully receive the second configuration information. For example, the terminal device can receive the second configuration information in an environment with good signal, and then, when entering a scenario with strong signal interference, receive the second control information based on the pre-received second configuration information. Since this scheme carries the second configuration information through at least one of system messages, MIBs, or user common messages, it reduces the amount of data the terminal device needs to receive in scenarios with strong signal interference, and also increases the probability that the terminal device can successfully receive the second configuration information.

[0033] In one possible implementation, the second control information occupies at least one control channel element (CCE), and one of the CCEs occupies more than three symbols. Since one CCE in the second control information occupies more time-domain symbols, the amount of frequency-domain resources occupied by the second control information can be reduced; that is, the second control information can occupy fewer frequency-domain resources per symbol. Consequently, on a single symbol, the network device can allocate more power values ​​to the frequency-domain resources occupied by the second control information, thereby increasing the power value corresponding to the frequency-domain resources occupied by the second control information and thus improving the transmission performance of the second control information.

[0034] In one possible implementation of the first aspect and / or the second aspect, the first message is carried on the first data channel, and the second control information is carried on the first data channel. The relevant content of the first message can be found in the foregoing description of the first aspect and its possible implementations, and will not be repeated here. This reduces the amount of resources occupied by the second control information and the first message, thereby reducing resource overhead. Furthermore, in scenarios with weak signals, the transmission performance of the second control information and the first message, which require transmission by the network device, is improved because the overhead is reduced.

[0035] In one possible implementation of the first aspect and / or the second aspect, the first message is carried on a first data channel, the first data channel occupies first time-domain resources, and the time-domain resources occupied by the second control information belong to the first time-domain resources. For example, at least one frequency domain unit in the first frequency domain resources differs from at least one frequency domain unit in the second frequency domain resources. The relevant content of the first message can be found in the foregoing description of the first aspect and its possible implementations, and will not be repeated here. For example, both the second control information and the first message are carried on the first data channel, and the second control information and the first message can be transmitted via frequency division, which can reduce the transmission delay of the second control information. These implementations provide a possible solution for the resource allocation method of the first control information and the first message.

[0036] In one possible implementation of the first aspect and / or the second aspect, the first message is carried on a first data channel, and the second control information and the first data channel occupy different time-domain resources. For example, at least one frequency domain unit in the first frequency domain resource is the same as at least one frequency domain unit in the second frequency domain resource. The relevant content of the first message can be found in the foregoing description of the first aspect and its possible implementations, and will not be repeated here. For example, the second control information and the first message can be transmitted in a time-division manner. These implementations provide a possible solution for the resource allocation method of the first control information and the first message.

[0037] In one possible implementation, the second control information may occupy one or more CCEs. A single CCE may occupy 6 time-domain units (e.g., symbols) and 1 frequency-domain unit (e.g., RB). This allows the second control information to occupy fewer frequency-domain units, enabling the network device to allocate more power to the second control information in a single time-domain unit, thereby improving the transmission performance of the second control information.

[0038] In one possible implementation, the second control information may not be mapped to the resources occupied by the demodulation reference signal in the first data channel. This would reduce interference to the first data channel.

[0039] Thirdly, this application provides a communication method. This method is executed by a terminal device. The terminal device can be a terminal equipment or a chip (system) within a terminal equipment.

[0040] The terminal device receives the first message from a first frequency domain resource. The first frequency domain resource is a portion of the resources in a first bandwidth. The power value corresponding to a frequency domain cell in the first frequency domain resource is greater than a first power value, which is determined based on the power value of the first bandwidth and the number of frequency domain cells in the first bandwidth. Because the power value corresponding to a frequency domain cell in the first frequency domain resource is greater than the first power value, the signal fading resistance of the first message can be improved, thereby improving the transmission performance of the first message, and increasing the probability that the terminal device will receive the first message.

[0041] In one possible implementation, the terminal device sends information indicating that it has missed receiving signals and / or messages. Thus, upon receiving this information, the network device can send a first message to the terminal device on a first frequency domain resource.

[0042] In one possible implementation, if the terminal device misses receiving a signal and / or message, it receives the first message in a first frequency domain resource.

[0043] The first frequency domain resources, the first bandwidth, and the content of signals and / or messages missed by the terminal device can be found in the description of the first aspect or possible implementations of the first aspect, and will not be repeated here.

[0044] In one possible implementation, the terminal device receives first configuration information. The content of the first configuration information can be found in the description of the first aspect or possible implementations thereof, and will not be repeated here.

[0045] In one possible implementation, the terminal device receives first control information. The content of the first control information can be found in the description of the first aspect or possible implementations thereof, and will not be repeated here.

[0046] In one possible implementation, the terminal device receives information indicating the power value corresponding to the first frequency domain resource and / or information indicating the time domain resource occupied by the first message. Related details can be found in the description of the first aspect or its possible implementations, and will not be repeated here.

[0047] Fourthly, this application provides a communication method. This method is executed by a terminal device. The terminal device can be a terminal equipment or a chip (system) within the terminal equipment.

[0048] The terminal device receives second control information. The second frequency domain resource is a portion of the resources in the second bandwidth. The power value corresponding to a frequency unit in the second frequency domain resource is greater than a second power value, which is determined based on the power value of the second bandwidth and the number of frequency units in the second bandwidth. Because the power value corresponding to a frequency unit in the second frequency domain resource is greater than the second power value, the signal fading resistance of the second control information can be improved, thereby improving the transmission performance of the second control information, and increasing the probability that the terminal device will receive the second control information.

[0049] For details regarding the second frequency domain resources and the second bandwidth, please refer to the description of the second aspect or possible implementations of the second aspect above, which will not be repeated here.

[0050] In one possible implementation, the terminal device receives second configuration information. For example, the content related to the second configuration information and the second control information can be found in the description of the second aspect or possible implementations of the second aspect, and will not be repeated here.

[0051] For further details regarding the first message and the second control information, please refer to the descriptions of the first aspect, possible implementations of the first aspect, the second aspect, or possible implementations of the second aspect, which will not be repeated here.

[0052] Fifthly, a communication device is provided, which can be the aforementioned network device or terminal device. The communication device may include a communication unit and a processing unit to perform any one of the first to fourth aspects, or any possible implementation of the first to fourth aspects. The communication unit is used to perform functions related to sending and receiving. The communication unit may be referred to as a transceiver unit. Optionally, the communication unit includes a receiving unit and a sending unit. In one design, the communication device is a communication chip, the processing unit may be one or more processors or processor cores, and the communication unit may be the input / output circuit, input / output interface, or antenna port of the communication chip.

[0053] In another design, the communication unit can be a transmitter and a receiver, or the communication unit can be a transmitter and a receiver.

[0054] Optionally, the communication device may also include modules that can be used to perform any one of the first to fourth aspects described above, or to perform any possible implementation of the first to fourth aspects.

[0055] Sixthly, a communication device is provided, which can be the aforementioned network device or terminal device. The communication device may include a processor and a memory to execute any one of the first to fourth aspects, or any possible implementation of the first to fourth aspects. Optionally, it may also include a transceiver, the memory for storing computer programs or instructions, and the processor for retrieving and running the computer programs or instructions from the memory. When the processor executes the computer programs or instructions in the memory, the communication device executes any one of the first to fourth aspects, or any possible implementation of the first to fourth aspects.

[0056] Optionally, there may be one or more processors and one or more memories.

[0057] Optionally, the memory can be integrated with the processor, or the memory can be set up separately from the processor.

[0058] Optionally, the transceiver may include a transmitter and a receiver.

[0059] A seventh aspect provides a communication device, which can be the aforementioned network device or terminal device. The communication device may include a processor to execute any one of the first to fourth aspects, or to execute any possible implementation of the first to fourth aspects. For example, the processor executes any one of the first to fourth aspects, or to execute any possible implementation of the first to fourth aspects, through logic circuits or by executing computer programs or instructions in memory. The processor is coupled to a memory. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

[0060] In one implementation, when the communication device is a network device or a terminal device, the communication interface can be a transceiver or an input / output interface. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0061] In another implementation, when the communication device is a chip or chip system, the communication interface can be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip or chip system. The processor can also be manifested as a processing circuit or logic circuit.

[0062] Eighthly, a system is provided, the system including means for transmitting a first channel, the means for transmitting the first channel including the aforementioned network device or terminal device.

[0063] In one possible implementation, the system may further include means for receiving the first channel. The means for receiving the first channel may also include the aforementioned network device or terminal device.

[0064] In a ninth aspect, a chip system is provided, the chip system including at least one processor and an interface circuit, the interface circuit and the at least one processor being interconnected via a line, the processor executing a computer program (also referred to as code or instructions) to cause any one of the first to fourth aspects and any possible implementation of the first to fourth aspects to be executed.

[0065] In a tenth aspect, a computer program product is provided, comprising: a computer program (also referred to as code or instructions) that, when executed, causes a computer to perform any one of the first to fourth aspects described above, or to perform any possible implementation of the first to fourth aspects.

[0066] Eleventhly, a computer-readable storage medium is provided, which stores a computer program (also referred to as code or instructions) that, when run on a computer, causes the computer to perform any one of the first to fourth aspects described above, or to perform any possible implementation of the first to fourth aspects.

[0067] In a twelfth aspect, a processing apparatus is provided, comprising: an interface circuit and a processing circuit. The interface circuit may include an input circuit and an output circuit. The processing circuit is configured to receive signals through the input circuit and transmit signals through the output circuit, thereby enabling any one of the first to fourth aspects, or any possible implementation thereof, to be carried out.

[0068] In specific implementation, the aforementioned processing device can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, gate circuit, flip-flop, and various logic circuits, etc. The input signal received by the input circuit can be received and input by, for example, but not limited to, a receiver, and the signal output by the output circuit can be, for example, but not limited to, output to a transmitter and transmitted by the transmitter. Furthermore, the input circuit and the output circuit can be the same circuit, which is used as the input circuit and output circuit at different times. This application does not limit the specific implementation method of the processor and various circuits.

[0069] In one implementation, the communication device is a network device or a terminal device. The interface circuit can be an RF processing chip in the network device or terminal device, and the processing circuit can be a baseband processing chip in the network device or terminal device.

[0070] In another implementation, the communication device can be a component within a network device or terminal device, such as an integrated circuit product like a system-on-a-chip (SoC) or communication chip. The interface circuit can be an input / output interface, interface circuit, output circuit, input circuit, pins, or related circuits on the chip or chip system. The processing circuit can be the logic circuit on the chip. Attached Figure Description

[0071] Figure 1 shows four possible structural diagrams of the frequency domain resources of data in Comb-4 (or N3 = 4).

[0072] Figure 2 is a schematic diagram of a possible structure of SSB;

[0073] Figure 3 is a schematic diagram of a communication system architecture applicable to an embodiment of this application;

[0074] Figure 4A is a schematic diagram of a communication system architecture applicable to an embodiment of this application;

[0075] Figure 4B is a schematic diagram of a communication system architecture applicable to an embodiment of this application;

[0076] Figure 4C is a schematic diagram of a communication system architecture applicable to an embodiment of this application;

[0077] Figure 5 is a schematic diagram of a communication system architecture applicable to an embodiment of this application;

[0078] Figure 6 is a possible flowchart of a communication method provided in an embodiment of this application;

[0079] Figure 7 is a schematic diagram of a possible transmission method of the first message provided in an embodiment of this application;

[0080] Figure 8 is a schematic diagram of another possible transmission method of the first message provided in the embodiments of this application;

[0081] Figure 9 is a schematic diagram of another possible transmission method of the first message provided in an embodiment of this application;

[0082] Figure 10 is a schematic diagram of another possible transmission method of the first message provided in the embodiments of this application;

[0083] Figure 11 is a possible flowchart of another communication method provided in an embodiment of this application;

[0084] Figure 12 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0085] Figure 13 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0086] Figure 14 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0087] Figure 15 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0088] Figure 16 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0089] Figure 17 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0090] Figure 18 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0091] Figure 19 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0092] Figure 20 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0093] Figure 21 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0094] Figure 22 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0095] Figure 23 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0096] Figure 24 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0097] Figure 25 is a schematic diagram of another possible information transmission method provided in the embodiments of this application;

[0098] Figure 26 is a schematic diagram of a communication device provided in an embodiment of this application;

[0099] Figure 27 is a schematic diagram of the structure of a communication device provided in an embodiment of this application. Detailed Implementation

[0100] The following is a description of the nouns and terms used in the embodiments of this application.

[0101] (1) Resources.

[0102] The resources in the embodiments of this application may include at least one of time-domain resources, frequency-domain resources, code-domain resources, or spatial-domain resources.

[0103] (1.1) Time domain resources.

[0104] Time-domain resources may include at least one of the following: radio frame, subframe, slot, mini slot, or orthogonal frequency division multiplexing (OFDM) symbol.

[0105] A time-domain element may include a radio frame, a subframe, a time slot, a micro-time slot, or an OFDM symbol. A time-domain element may also include resources composed of multiple radio frames, multiple subframes, multiple time slots, multiple micro-time slots, or multiple OFDM symbols. Specifically, a radio frame may include multiple subframes, a subframe may include one or more time slots, and a time slot may include at least one symbol. Alternatively, a radio frame may include multiple time slots, and a time slot may include at least one symbol. It should be noted that, in the embodiments of this application, an OFDM symbol may also be simply referred to as a symbol.

[0106] Depending on the subcarrier spacing, the length of each symbol can vary, and therefore the time slot length can also vary. For example, a time slot with a 15 kilohertz (kHz) subcarrier spacing corresponds to a time slot length of 1 millisecond (ms), while a time slot with a 60 kHz subcarrier spacing corresponds to a time slot length of 0.25 ms, and so on.

[0107] In this embodiment of the application, the time domain unit can also be replaced by: time domain resource unit or time unit, etc.

[0108] (1.2) Frequency domain resources.

[0109] In the frequency domain, frequency domain resources can include one or more frequency domain units. A frequency domain unit can be a resource block (RB), a subcarrier, a resource block group (RBG), a predefined subband, a precoding resource block group (PRG), a bandwidth part (BWP), a resource element (RE) (also called a resource cell or resource particle), a carrier, a serving cell, etc.

[0110] Subcarrier or RE refers to the smallest frequency domain unit on a specific symbol in a multicarrier system. Subcarrier spacing (SCS) is the interval between the center or peak positions of two adjacent subcarriers in the frequency domain in an OFDM system. In 5G NR, various subcarrier spacings are introduced, and different carriers can have different subcarrier spacings. The baseline is 15kHz, which can be 15kHz × 2n, where n is an integer from 3.75, 7.5 up to 480kHz. In the embodiments of this application, RE can refer to a resource unit of time-frequency resources, such as the smallest time-frequency resource unit. In this application, subcarrier and RE are interchangeable and have the same content.

[0111] A subchannel is the smallest unit of frequency domain resources occupied by a physical resource block (PRB) in a shared channel. A subchannel can include one or more resource blocks (RBs). The bandwidth of a wireless communication system in the frequency domain can include multiple RRBs. For example, in the various possible bandwidths of an LTE system, the number of physical resource blocks (PRBs) can be 6, 15, 25, 50, etc. In the frequency domain, an RRB can include several subcarriers. For example, in an LTE system, an RRB includes 12 subcarriers, where each subcarrier can be spaced 15kHz apart. Of course, other subcarrier spacings can also be used, such as 3.75kHz, 30kHz, 60kHz, or 120kHz; there is no limitation here.

[0112] A frequency domain unit may include a RE, an RB, a channel, a subchannel, a carrier, or a bandwidth part (BWP), etc. A frequency domain unit may also include resources aggregated from multiple REs, multiple RBs, multiple subchannels, multiple carriers, or multiple BWPs. In the embodiments of this application, a channel can be equivalently replaced by a resource block set (RB set), and the frequency domain bandwidth of an RB set can be 20 MHz.

[0113] In this embodiment, the frequency domain unit can also be replaced by: frequency domain resource unit or frequency unit, etc.

[0114] (1.3) Code domain resources.

[0115] Code field resources may include sequence indexes or identifiers used when transmitting information. In one possible implementation, information is transmitted using sequences, which can be achieved using direct extended sequences, block extended sequences, direct sequence modulation, etc. Different pieces of information to be transmitted require one or more sequences. These sequence indexes and sequence numbers carrying the information are called code field resources.

[0116] (1.4) Airspace resources.

[0117] Spatial resources can include all or part of the antennas used for transmitting information, the direction of digital and / or analog beams used for transmitting information, or a layer / or several layers / or a stream / or several streams of space formed by digital and / or analog precoding used for transmitting information. These information-carrying antenna resources, spatial directions, streams, or layers are referred to as spatial resources.

[0118] (2) Mapping can also be described as “occupation” or “use”. For example, when a communication system maps a channel on a carrier, it means that the communication system uses or occupies part or all of the time-frequency resources corresponding to the carrier to transmit information carried by the channel.

[0119] (3) Comb tooth mapping.

[0120] Data can occupy all or part of the bandwidth resources, such as frequency domain resources based on a comb-like structure. In this embodiment, N3 represents the interval of the comb teeth, also known as the comb tooth value (for example, N3 can be replaced with other characters such as Ncomb, and the N in N3 can also be replaced with other characters). In this embodiment, for Comb-N3, data appears in the frequency domain at intervals of N3 REs, and no transmission occurs on the remaining (N3-1) REs. Optionally, the frequency domain transmission method of Comb-N3 in this embodiment can also be referred to as comb teeth, comb tooth structure, comb splitting, or comb splitting structure, etc.

[0121] Figure 1 illustrates four possible structural diagrams of frequency domain resources for data in Comb-4 (or N3 = 4). Data can be transmitted through comb structures (a), (b), (c), or (d) in Figure 1. Taking Figure 1(a) as an example, in the case of Comb-4 (or N3 = 4), the REs occupied by data appear in the frequency domain at equal intervals of 4. As shown in Figure 1(a), data is transmitted on the first RE, and the next three consecutive REs are left unused (the specific location of the frequency domain resources occupied by the data is shown in Figure 1(a)). The meanings of the other comb structures in Figure 1 are similar to those in Figure 1(a), and will not be repeated.

[0122] (4) Reference signal.

[0123] In this application embodiment, the reference signal may include (or may be) a demodulation reference signal (DMRS), a channel state information reference signal (CSI-RS), a synchronization signal / physical broadcast channel block (SS / PBCH block), a tracking reference signal (TRS), a phase tracking reference signal (PTRS), or a cell reference signal (CRS), etc. The downlink reference signal may include (or may be) at least one of these reference signals. In this application embodiment, the SS / PBCH block may also be abbreviated as SSB, and SSB and SS / PBCH block can be used interchangeably.

[0124] (5)SSB.

[0125] The synchronization signal block in the embodiments of this application may include / be replaced by: SSB.

[0126] In existing NR systems, terminal devices can synchronize with the base station and obtain system messages by receiving SSBs at the Uu interface. For example, an SSB can include a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH). The PSS can be used to transmit the cell number, and the SSS can be used to transmit the cell group number. The cell number and cell group number together determine multiple physical cell identities (PCIs) in the mobile communication system. Once the terminal device successfully finds the PSS and SSS, it knows the physical cell number of the carrier carrying the PSS and SSS, thus gaining the ability to parse the system messages contained in the SSB.

[0127] System information in the SSB can be carried by the PBCH. Since this information is essential for terminal equipment to access the network, it can be called the main information block (MIB). For example, the MIB may contain the system frame number and the initial subcarrier spacing for access. The information contained in the MIB is limited and insufficient to support terminal equipment access to the cell. Therefore, the terminal equipment can also obtain other system information, such as system information block (SIB) 1. SIB1 can be transmitted on the physical downlink shared channel (PDSCH) with a period of 160ms. The terminal equipment can obtain the parameters used to transmit SIB1 from the MIB carried by the PBCH, thus enabling it to receive SIB1. In this way, the terminal equipment can obtain the system information required to access the cell and subsequently access the cell.

[0128] Figure 2 exemplarily illustrates a possible structural diagram of the time-domain and frequency-domain resources occupied by an SSB. As shown in Figure 2, in the time domain, one SSB occupies four OFDM symbols, namely symbol 0, symbol 1, symbol 2, and symbol 3. The symbols involved in this embodiment can also be replaced with time-domain symbols (e.g., OFDM symbols). In the frequency domain, one SSB occupies 20 resource blocks, which is 240 REs (or subcarriers). Within these 20 RBs, the REs (or subcarriers) are numbered from 0 to 239. The PSS is located on the middle 127 REs (or subcarriers) of symbol 0, and the SSS is located on the middle 127 REs (or subcarriers) of symbol 2. The PBCH occupies all the subcarriers of symbols 1 and 3, that is, 240 REs (or subcarriers) of symbol 1 and 240 REs (or subcarriers) of symbol 3. The PBCH also occupies a portion of the remaining subcarriers of symbol 2, excluding the subcarriers occupied by the SSS.

[0129] (6) Beam.

[0130] In new radio (NR) protocols, beamforming can be represented as a spatial domain filter, spatial parameter, spatial setting, quasi-colocation (QCL) information, QCL assumption, or QCL indication. Beamforming can be indicated through transmission configuration indicator state (TCI-state) parameters or spatial relationship parameters.

[0131] Therefore, in this application, "beam" can be replaced by spatial filter, spatial filter, spatial parameter, spatial parameter, spatial setting, spatial setting, QCL information, QCL assumption, QCL indication, TCI-state (downlink TCI-state, uplink TCI-state), spatial relationship, etc. The above terms are also equivalent to each other. "Beam" can also be replaced with other beam-related terms, which are not limited in this application.

[0132] In this embodiment, any two of the following can be interchanged: downlink beam, CSI-RS, TCI-state, downlink / joint TCI state (DL or joint TCI state), SSB, and tracking reference signal (TRS).

[0133] The beam used to transmit signals can be called the transmission beam (Tx beam), or it can be referred to as a spatial domain transmission filter, spatial transmission filter, spatial domain transmission parameter, spatial transmission setting, or spatial transmission setting. The downlink transmission beam can be indicated by TCI-state.

[0134] In this embodiment of the application, any two of the following can be interchanged: uplink beam, uplink (UL) TCI state, DL or joint TCI state, SRS, CSI-RS, SSB, and TRS.

[0135] The beam used to receive signals can be called a reception beam (Rx beam), a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter, a spatial reception setting, or a spatial reception setting. The uplink transmit beam can be indicated by spatial relationships, uplink TCI-state, or SRS resources (indicating the transmit beam using that SRS). Therefore, the uplink beam can also be replaced by an SRS resource.

[0136] The transmitting beam can refer to the distribution of signal strength in different directions in space after a signal is transmitted through an antenna, while the receiving beam can refer to the distribution of signal strength in different directions in space of a wireless signal received from an antenna.

[0137] Furthermore, the beam can be a wide beam, a narrow beam, or other types of beam. The beamforming technology can be beamforming technology or other technologies. Specifically, beamforming technology can be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology, etc.

[0138] Beams are generally associated with resources. For example, during beam measurement, network devices measure different beams using different resources. The terminal devices report the measured resource quality, allowing the network devices to determine the quality of the associated beams. During data transmission, beam information is also indicated through its associated resources. For instance, network devices use the TCI field in downlink control information (DCI) to indicate the physical downlink sharing channel (PDSCH) beam information of the terminal devices.

[0139] Optionally, multiple beams with the same or similar communication characteristics can be considered as a single beam. A beam may include one or more antenna ports for transmitting data channels, control channels, and detection signals, etc. One or more antenna ports forming a beam can also be considered as a set of antenna ports.

[0140] In the embodiments of this application, unless otherwise specified, a beam refers to the transmit beam of a network device. In beam measurement, each beam of a network device is associated with a resource, and therefore the beam associated with that resource can be uniquely identified by the resource's index.

[0141] (7) Beam footprint.

[0142] For example, beam footprint refers to the way a satellite illuminates / transmits signals to a corresponding area on the ground in NTN communication using a specific antenna pattern, antenna beam angle, and direction. Optionally, the width of the antenna beam angle can be described as a 3dB beamwidth, or other beamwidths (such as 4dB, 5dB, etc.). Optionally, the positions of different beam footprints on the ground can be continuous or discontinuous, overlapping or non-overlapping. Optionally, beam footprint can also be called footprint. Unless otherwise specified, the two terms can be used interchangeably in this application.

[0143] Figure 3 illustrates a possible communication scenario provided by an embodiment of this application. As shown in Figure 3, the satellite connects to the core network through a gateway (or satellite base station), and the link connecting the gateway and the satellite can be called a feeder link. The satellite can provide communication services to the UE, and this link can be called a service link. As shown in Figure 3, the satellite illuminates / transmits signals to a corresponding area on the ground, and the acquisition on the ground can be called a beam footprint. The elliptical area illustrated in Figure 3 can be a possible example of a beam footprint.

[0144] (8) Control channel.

[0145] The control channel may include, for example, at least one of a physical downlink control channel (PDCCH) and a physical uplink control channel (PUCCH) or a physical sidelink control channel (PSCCH).

[0146] PDCCH is the downlink control channel, which can refer to the control channel sent from the network device to the terminal. PSCCH is the sidelink control channel, which can refer to the control channel sent between two terminals through a sidelink. PUCCH is the uplink physical channel, which can refer to the control channel sent from the terminal to the network device.

[0147] Control channels (any of PDCCH, PUCCH, and PSCCH) can carry information, which can be called control information. For example, PDCCH can carry downlink control information (DCI). PSCCH can carry at least one of sidelink control information (SCI) and medium access control element (MAC CE). PUCCH can carry uplink control information (UCI).

[0148] For example, the DCI carried by the PDCCH that schedules PDSCH / PUSCH can contain resource configuration information, which can be used to indicate resources. This resource configuration information may include two fields: frequency domain resource assignment and time domain resource assignment. The terminal device determines a time-frequency resource block based on the information in these two fields, and the PDSCH / PUSCH will be transmitted on the resource indicated by this resource configuration information (e.g., the time-frequency resource block).

[0149] For example, the information carried by the PSCCH that schedules the PSSCH (such as the SCI) can include resource configuration information, which can be used to indicate resources. This resource configuration information may include two fields: frequency domain resource assignment and time domain resource assignment. The terminal device determines a time-frequency resource block based on the information in these two fields, and the PSSCH can be transmitted on the resource indicated by this resource configuration information (such as the time-frequency resource block).

[0150] (9) Shared channel (SCH) (The shared channel can also be replaced by the data channel).

[0151] The shared channel may include, for example, at least one of the physical sidelink share channel (PSSCH), physical downlink share channel (PDSCH), and physical uplink share channel (PUSCH).

[0152] PDSCH is the downlink physical channel, which can refer to the physical channel transmitted from a network device to a terminal. PSSCH is the sidelink physical channel, which can refer to the physical channel transmitted between two terminals via a sidelink. PUSCH is the downlink physical channel, which can refer to the physical channel transmitted from a terminal to a network device.

[0153] A shared channel (any of PDSCH, PUSCH, and PSSCH) can carry information, which may be called control information or service data. For example, PSSCH can carry at least one of SCI, data, or MAC CE. For example, PDSCH can carry DCI, etc. For example, PUSCH can carry UCI, etc.

[0154] Shared channels (any one of PDSCH, PUSCH, and PSSCH) have the capability to carry data, but in practical applications, any of these channels may or may not carry data.

[0155] (10) Rate matching.

[0156] Rate matching is a widely used digital domain process in many digital communication systems, including NR, to align the number of encoded bits with the actual amount of available transmission resources. Rate matching is typically applied at the transmitter side. For the transmitter, rate matching means that the transmitter determines the code rate of the data to be transmitted based on the available physical resources, performs channel coding on the data, and then transmits the encoded data on the available physical resources. For example, bits on the transmission channel may be repeated or punctured to match the carrying capacity of the physical channel, achieving the bit rate required by the transmission format during channel mapping.

[0157] For example, if the total resources are S1, the unusable resources are S2, and both S1 and S2 are positive integers, then the available resources are (S1-S2). Rate matching refers to directly determining the block size based on the resources (S1-S2), performing channel coding on the data to be transmitted, and mapping and sending the data to the resources (S1-S2).

[0158] Rate matching is used because it is known that DMRS will occupy 10 REs. During the information encoding process, the actual carrying capacity of 90 REs (corresponding to the transmission of 180 bits) is used to discard or repeat the encoded bits.

[0159] Figure 4A exemplarily illustrates an architecture diagram of a communication system 1000 applicable to an embodiment of this application. As shown in Figure 4A, the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include an Internet 300. The wireless access network 100 may include at least one wireless access network device (110a or 110b in Figure 4A) and at least one terminal device (120a-120j in Figure 4A). The terminal device is wirelessly connected to the wireless access network device, and the wireless access network device is wirelessly or wiredly connected to the core network. The core network device and the wireless access network device may be independent and different physical devices, or the functions of the core network device and the logical functions of the wireless access network device may be integrated on the same physical device, or a single physical device may integrate some of the functions of the core network device and some of the functions of the wireless access network device. Terminal devices and wireless access network devices may be interconnected via wired or wireless means. Figure 4A is just a schematic diagram. The communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in Figure 4A.

[0160] The network devices involved in the embodiments of this application include, for example, radio access network (RAN) devices. RAN devices can be base stations, evolved NodeBs (eNodeBs or eNBs), transmission reception points (TRPs), transmission points (TPs), base stations in 5th generation (5G) mobile communication systems, base stations in future mobile communication systems, or access nodes in WiFi systems; they can also be modules or units that perform some of the functions of a base station, for example, they can be central units (CUs), distributed units (DUs), or radio units (RUs). The CU (Radio Control Unit) performs the functions of the radio resource control protocol and packet data convergence protocol (PDCP) of the base station, and can also perform the functions of the service data adaptation protocol (SDAP). The DU (Radio Link Control Unit) performs the functions of the radio link control layer and medium access control (MAC) layer of the base station, and can also perform some or all of the physical layer functions. For specific descriptions of the above-mentioned protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP). The CU and DU can be set up separately, or they can be included in the same network element, such as in the baseband unit (BBU). The RU (Radio Receiver Unit) can be included in radio frequency equipment or radio frequency units, such as in the remote radio unit (RRU), active antenna unit (AAU), or remote radio head (RRH). In different systems, CU, DU, or RU may also have different names, but those skilled in the art will understand their meaning. For example, in an open radio access network (ORAN) system, a CU can also be called an open CU (open-CU, O-CU), a DU can also be called an open DU (open-DU, O-DU), and a RU can also be called an open RU (open-RU, O-RU).In this application, any of the following units—CU (or CU control plane (CU-CP), CU user plane (CU-UP), DU, and RU)—can be implemented through software modules, hardware modules, or a combination of software and hardware modules. CU-CP can also be called open-CU-CP (O-CU-CP), and CU-UP can also be called open-CU-UP (O-CU-UP).

[0161] Wireless access network equipment can be a macro base station (as shown in Figure 4A, 110a), a micro base station or an indoor station (as shown in Figure 4A, 110b), or a relay device, relay node, or donor node, etc. The embodiments of this application do not limit the specific technology or equipment form used in the wireless access network equipment. For ease of description, a base station is used as an example of wireless access network equipment in the following description.

[0162] Terminal devices can also be referred to as user equipment (UE), mobile stations, mobile terminal devices, etc. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminal devices can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, airships, ships, robots, robotic arms, smart home devices, sensors, in-vehicle equipment, on-board units (OBU), roadside units (RSU), relay nodes with mobility capabilities, etc. The embodiments of this application do not limit the specific technologies or device forms used in the terminal devices.

[0163] The aforementioned terminal devices can establish connections with the operator's network through interfaces provided by the operator's network (such as N1), and use data and / or voice services provided by the operator's network. The terminal devices can also access the Domain Name System (DNS) through the operator's network, and use operator services deployed on the DNS, and / or services provided by third parties. These third parties can be service providers outside of the operator's network and the terminal devices, and can provide other data and / or voice services to the terminal devices. The specific form of these third parties can be determined according to the actual application scenario and is not limited here.

[0164] Base stations and terminal equipment can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; on water; or in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base stations and terminal equipment.

[0165] The roles of base stations and terminal devices can be relative. For example, the helicopter or drone 120i in Figure 4A can be configured as a mobile base station. For terminal devices 120j that access the wireless access network 100 through 120i, terminal device 120i is a base station; however, for base station 110a, 120i is a terminal device, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol. In this case, relative to 110a, 120i is also a base station. Therefore, both base stations and terminal devices can be collectively referred to as communication devices. 110a and 110b in Figure 4A can be called communication devices with base station functions, and 120a-120j in Figure 4A can be called communication devices with terminal device functions.

[0166] Communication between base stations and terminal devices, between base stations, and between terminal devices can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0167] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal device can be executed by modules (such as chips or modems) within the terminal device, or by a device that includes terminal device functions.

[0168] In this application, the base station sends downlink signals or downlink information to the terminal device, with the downlink information carried on the downlink channel; the terminal device sends uplink signals or uplink information to the base station, with the uplink information carried on the uplink channel. In order to communicate with the base station, the terminal device needs to establish a radio connection with a cell controlled by the base station. The cell with which the terminal device has established a radio connection is called the serving cell of the terminal device. When the terminal device communicates with this serving cell, it is also subject to interference from signals from neighboring cells.

[0169] The core network involved in this application embodiment may include network devices that process and forward user signaling and data. For example, it includes core network devices such as access and mobility management functions (AMF), session management functions (SMF), user plane gateways, and location management devices. The user plane gateway can be a server with functions such as mobility management, routing, and forwarding of user plane data, generally located on the network side, such as a serving gateway (SGW), packet data network gateway (PGW), or user plane function (UPF). AMF and SMF are equivalent to the mobility management entity (MME) in a long-term evolution (LTE) system. AMF is mainly responsible for admission aspects, and SMF is mainly responsible for session management. Of course, the core network may also include other network elements, which are not listed here.

[0170] Figures 4B and 4C exemplarily illustrate network architecture diagrams of several communication systems applicable to embodiments of this application. The communication system may include satellites, network devices, and terminal devices, etc. The communication system may also include gateways and core network devices. Figures 4B and 4C exemplarily illustrate a converged network architecture of NTN and terrestrial networks. A description is provided below with reference to the accompanying drawings.

[0171] The satellite can be a highly elliptical orbit (HEO) satellite, a geosynchronous orbit (GSO) satellite, a geostationary earth orbit (GEO) satellite, a medium earth orbit (MEO) satellite, or a low-earth orbit (LEO) satellite. This application does not limit the satellite's operating mode; for example, the satellite can operate in transparent mode or regenerative mode. Figure 4B illustrates the satellite operating in transparent mode as an example, and Figure 4C illustrates the satellite operating in regenerative mode as an example.

[0172] When a satellite operates in transparent mode, it provides transparent relay forwarding functionality. In this mode, the satellite can also be referred to as a transparent satellite. A gateway possesses the functions of a network device (such as a base station) or some of the functions of a network device (such as a base station); in this case, the gateway can be considered a network device (such as a base station). Alternatively, the network device (such as a base station) can be deployed separately from the gateway. In this case, the feeder link latency includes both the latency from the satellite to the gateway and the latency from the gateway to the gNB. The transparent mode discussed below assumes that the gateway and gNB are located together or close to each other. For cases where the gateway and gNB are far apart, the feeder link latency is simply the sum of the latency from the satellite to the gateway and the latency from the gateway to the gNB.

[0173] When a satellite operates in regenerative mode, it possesses data processing capabilities and functions as a network device (such as a base station), or partially functions as a network device (such as a base station). In this mode, the satellite can be considered as a network device (such as a base station). In this scenario, the satellite can also be referred to as a regenerative satellite.

[0174] Satellites can communicate wirelessly with terminal devices via broadcast communication signals and navigation signals. Optionally, each satellite can provide communication, navigation, and positioning services to terminal devices through multiple beams. For example, each satellite uses multiple beams to cover the service area, and the relationship between different beams can be one or more of time-division, frequency-division, and space-division.

[0175] A gateway (also known as a ground station, earth station, or gateway) is a network device used to connect satellites and ground-based network equipment (such as ground base stations). One or more satellites can connect to one or more ground-based network devices (such as ground base stations) through one or more gateways; this is not a limitation. The link between the satellite and the terminal device is called a service link, and the link between the satellite and the gateway is called a feeder link. Network equipment can be deployed separately from the gateway; therefore, the latency of the feeder link can include both the latency from the satellite to the gateway and the latency from the gateway to the network equipment.

[0176] The network devices in this application embodiment may include network devices deployed on satellites (such as satellite base stations), network devices deployed on gateways, or network devices deployed on the ground (such as ground base stations). For example, the network devices may be radio access network (RAN) nodes as shown in Figure 4A above, RAN nodes in O-RAN systems, etc. Related details are as described above and will not be repeated here.

[0177] A core network (CN) device is a ground-based device that can communicate with NTN devices within the NTN system. For example, a CN could be the CN shown in Figure 4A; see the preceding description for details, which will not be repeated here.

[0178] The terminal device can be the terminal device involved in Figure 4A. For relevant details, please refer to the foregoing description and we will not repeat them here.

[0179] The embodiments of this application can also be applied to other communication system architectures, such as air-to-ground (ATG) communication systems, which include at least one network device and at least one high-altitude terminal device. High-altitude terminal devices include, for example, high-altitude aircraft and onboard terminal devices. The satellites in Figures 4B and 4C can also be replaced with other relay devices, such as high-altitude platform stations (HAPS) or other NTN devices. The communication system shown in Figure 4B or 4C is merely an example and does not limit the communication systems to which the methods provided in the embodiments of this application are applicable.

[0180] It is understood that the embodiments of this application can also be applied to air-to-ground (ATG) communication systems. This communication system includes at least one network device and at least one high-altitude terminal device. Data forwarding between the network device and the high-altitude terminal device can also be achieved through relay devices. High-altitude terminal devices include, for example, high-altitude aircraft and onboard terminal devices.

[0181] The communication method provided in this application can be applied to fourth-generation (4G) communication systems, such as long-term evolution (LTE) systems, as well as fifth-generation (5G) communication systems, such as 5G new radio (NR) systems, or to various communication systems evolving after 5G, such as future communication systems. The solution provided in this application can also be applied to TN networks, NTN networks, and network architectures where NTN networks are integrated with other networks.

[0182] Figure 5 illustrates an application scenario diagram provided by an embodiment of this application. As shown in Figure 5, the communication system includes a first communication device and a second communication device. The first communication device and the second communication device can communicate with each other.

[0183] For example, the first communication device can be a network device or a terminal device. Similarly, the second communication device can also be a network device or a terminal device. The first and second communication devices can be of the same or different types. For example, the first communication device can be a network device, and the second communication device can be a terminal device. Or, both the first and second communication devices can be terminal devices.

[0184] For example, the network device may be the network equipment or a chip (or chip system, circuit, or unit module) within the network equipment shown in Figures 4A, 4B, or 4C. The network equipment may be, for example, a device with base station and / or relay functions. For example, the network equipment may be a regenerable satellite or a transparent satellite. Another example is a RAN (Radio Route Array). Yet another example is an RSU (Radio Service Unit) or a control node, etc.

[0185] For example, the terminal device may be the terminal equipment or the chip (or chip system, or circuit, or unit module) inside the terminal equipment involved in FIG4A, FIG4B or FIG4C.

[0186] For example, the solution provided in the embodiments of this application can be applied to a TN, and the network device and terminal device can be devices in a TN. As another example, the solution provided in the embodiments of this application can be applied to an NTN.

[0187] For example, the network device and / or terminal device is an NTN device. An NTN device can be, for example, an NTN equipment or a chip (or chip system, or circuit, or unit module) within an NTN equipment. For example, an NTN equipment can include / be replaced by / be located on / at: a satellite, airship, aircraft, drone, or high-altitude platform, etc. The satellite can operate in regenerative mode and / or transparent mode. NTN equipment can be seen in the non-terrestrial equipment depicted in Figures 4A, 4B, or 4C. For example, the network device is at a high or low altitude relative to the terminal device. For example, the network device is deployed in the air, and the terminal device is deployed on the ground. Or, for another example, the network device is deployed on the ground, and the terminal device is deployed in the air.

[0188] For example, the terminal device is an NTN device with terminal functionality. For example, the terminal device may include / be an integrated access and backhaul (IAB) mobile termination (MT), a network-controlled repeater (NCR) MT, or a wireless access backhaul (WAB) MT, etc.

[0189] For example, the network device is an NTN device with base station functionality and / or relay functionality. For example, the network device is a satellite that can operate in transparent or regenerative mode. As another example, the network device includes / is: IAB, or NCR, or WAB, etc.

[0190] Based on the embodiments shown in Figures 1, 2, 4A, 4B, 4C, and 5, and the other contents described above, Figure 6 executively illustrates a possible flowchart of a communication method provided by an embodiment of this application. Figure 6 uses a first communication device and a second communication device as the execution entities, with the first communication device being a network device and the second communication device being a terminal device as an example. In this embodiment, the network device can also be replaced by the first communication device or other possible examples thereof, and the terminal device can also be replaced by the second communication device or other possible examples thereof. For example, the network device described below can also be replaced by a terminal device, in which case the following content can be applied to the system architecture for communication between terminal devices. The network device and / or the terminal device can be an NTN device. Or the network device and / or the terminal device can be a TN device. For example, the network device is a satellite, and the terminal device is a ground-based mobile phone. Another example is that the network device is a ground-based base station, and the terminal device is an airborne aircraft or airplane, etc. For related descriptions of the first communication device, the second communication device, the network device, the terminal device, and the NTN device, please refer to the relevant descriptions in Figure 5 above, which will not be repeated here.

[0191] The following description is based on Figure 6.

[0192] Step 601: The network device sends the first message.

[0193] Correspondingly, the terminal device receives the first message.

[0194] For example, if the network device misses receiving a signal and / or message from the terminal device, it transmits a first message on a first frequency domain resource. As another example, if the terminal device misses receiving a signal and / or message from the terminal device, it receives the first message on a first frequency domain resource. In the embodiments of this application, the network device and the terminal device can transmit messages, signals, and information; messages may include information, and signals may also include information.

[0195] The first frequency domain resource is a portion of the resources in the first bandwidth. In one possible implementation, the power value of the first frequency domain resource is associated with the power value of the first bandwidth. In this embodiment, the power value of the first frequency domain resource may also include / be replaced by: the power value used by the network device to transmit information on the first frequency domain resource. The power value of the first bandwidth may also include / be replaced by: the power value used by the network device to transmit information (or, transmit information and / or signals) on the first bandwidth. The power value in this embodiment may also be replaced by: transmit power, power, or transmit power value, etc.

[0196] For example, the power value of a first frequency domain resource (or the total power value of the first frequency domain resource) is associated with the power value of a first bandwidth (or the total power value of the first bandwidth, or the maximum power value of the first bandwidth, or the maximum allowable power value of the first bandwidth). For example, the power value of the first frequency domain resource may be equal to the power value of the first bandwidth. Alternatively, the power value of the first frequency domain resource may not be equal to (e.g., less than, or greater than) the power value of the first bandwidth. However, the power value of the first frequency domain resource will not differ significantly from the power value of the first bandwidth. For example, the absolute value of the difference between the power value of the first bandwidth and the power value of the first frequency domain resource may be less than a specified value, which may be, for example, a protocol-defined value or a negotiated value.

[0197] For example, the power value corresponding to a frequency domain cell in the first frequency domain resource is greater than the first power value. For example, the first power value is the power value of a frequency domain cell determined based on the power value of the first bandwidth and the number of frequency domain cells in the first bandwidth. For example, the first power value is the power value of one frequency domain cell when the power value of the first bandwidth is allocated to all frequency domain cells in the first bandwidth.

[0198] For example, the first power value is the quotient of the power value of the first bandwidth and the number of frequency domain units in the first bandwidth. For instance, if the power allocated to the first bandwidth is P0 and the number of frequency domain units in the first bandwidth is x, then the first power value can be the value of (P0 / x) (or the value of (P0 / x) rounded up or down), or the first power value is a value determined based on (P0 / x). For example, the first power value can be the integer part of the value of (P0 / x), or the first power value can be a value obtained after processing (P0 / x), such as the first power value being a set value and (P0 / x) through a certain operation, or the first power value being the value obtained by adding 1 to (P0 / x). For example, the power value configured on a carrier is 40dB. The first frequency domain resource is a PRB on that carrier, and the power value on that PRB can be 40dB, 38dB, or 39dB, etc.

[0199] In the first frequency domain resource, the power value corresponding to a frequency domain unit is greater than the first power value, which can improve the anti-signal fading capability of the first message, thereby improving the transmission performance of the first message, and the terminal device has a higher probability of receiving the first message.

[0200] For example, if a terminal device misses a signal and / or message, it may be in an environment with a low SNR (e.g., a user carrying the terminal device may be walking in a forest), where the signal is subject to significant interference. In such cases, the probability of the terminal device receiving information is low, and it may be unable to notify the terminal device of any emergencies. In one possible implementation of this application, when the terminal device is missing a signal and / or message (e.g., in a low SNR scenario or in a scenario with significant signal interference), the network device can transmit the first message on a portion of the resources in the first bandwidth (i.e., the first frequency domain resources). This allows for a greater allocation of power values ​​on the first bandwidth to the first frequency domain resources, thereby increasing the power value corresponding to the frequency domain unit occupied by the first message. This scheme can improve the transmission performance of the first message and increase the probability of the terminal device receiving the first message.

[0201] In this embodiment, low signal quality can include / be replaced by: signal quality less than a signal quality threshold, or signal quality not greater than a signal quality threshold. Some content in this embodiment uses signal quality less than a signal quality threshold as an example; however, the phrase "signal quality less than a signal quality threshold" can be replaced with "signal quality not greater than a signal quality threshold." Signal quality can be represented by multiple parameters, such as SNR, with each parameter corresponding to its signal quality threshold. Signal quality can also be represented using any one or more of the following: carrier-to-noise ratio (CNR), carrier-to-interference-plus-noise ratio (CINR), signal-to-interference-plus-noise ratio (SINR), reference signal received power (RSRP), reference signal receiving quality (RSRQ), received signal strength indicator (RSSI), and channel quality indicator (CQI). For example, low signal quality scenarios include scenarios with an SNR of (-15) dB to (-20) dB, or scenarios with an SNR of (-14) dB to (-20) dB. High signal quality scenarios are relative to low signal quality scenarios and can refer to scenarios other than low signal quality scenarios. In the embodiments of this application, "not greater than" can be replaced with "less than or equal to", or "less than and equal to".

[0202] For example, the first bandwidth may be the bandwidth of a carrier, the bandwidth of a BWP, or the bandwidth configured for a cell. As another example, the first message may be carried on a first data channel, which may be, for example, a PDSCH, and the first bandwidth may be the bandwidth configured for the PDSCH. For instance, the network device may allocate a power value configured on the bandwidth of a carrier, BWP, or cell to the first frequency domain resources. It can be seen that in these embodiments, the network device can allocate a larger power value to the first frequency domain resources, thereby improving the transmission performance of the first message.

[0203] For example, frequency domain resources in the first bandwidth other than the first frequency domain resources are not mapped to information and / or signals. For example, only the first message is transmitted in the first bandwidth, and no other information or signals are transmitted. These implementations allow the network device to allocate more (or all) of the power value configured on the first bandwidth to the first message, thereby improving the transmission performance of the first message.

[0204] The distribution of the first frequency domain resources within the first bandwidth can be flexibly configured. The first frequency domain resources may include one frequency domain cell or multiple frequency domain cells. When the first frequency domain resources include multiple frequency domain cells, for example, at least two adjacent frequency domain cells in the first frequency domain resources are non-contiguous frequency domain resources within the first bandwidth. Alternatively, at least two adjacent frequency domain cells in the first frequency domain resources are contiguous frequency domain resources within the first bandwidth.

[0205] The following figures 7, 8, 9, and 10 exemplify two distribution examples of the first frequency domain resources in the first bandwidth. Figures 7, 8, 9, and 10 illustrate a single frequency domain unit as one RB. In practical applications, a single frequency domain unit can also be other components; relevant examples can be found in the preceding introduction to frequency domain units, which will not be repeated here. Figures 7, 8, 9, and 10 illustrate a first bandwidth including RB#10, RB#11, RB#12, RB#13, RB#14, RB#15, RB#16, RB#17, RB#18, RB#19, RB#110, and RB#111. Figures 7, 8, 9, and 10 illustrate a first bandwidth configured with a power value of P0.

[0206] Figure 7 illustrates an example where the first frequency domain resource includes one frequency domain unit. In the example in Figure 7, the first frequency domain resource can be a continuous segment of resources within the first bandwidth. As shown in Figure 7, the first bandwidth includes 13 RBs, but the first frequency domain resource is only a portion of the resources within the first bandwidth, for example, RB#14. The network device transmits the first message on RB#15, and the other RBs in the first bandwidth, excluding RB#14, may not transmit information or signals. The network device can allocate more or all of the power value P0 configured in the first bandwidth to RB#14 to increase the power value (or power of the first message). For example, the power value on RB#14 is P0. Alternatively, the power value on RB#14 may be a value smaller than P0 but larger than (P0 / 13), where " / " represents division.

[0207] For example, when transmitting the first message (e.g., PDSCH) in the downlink, the network device uses a portion of the PRBs in the first bandwidth for message transmission based on power boosting. For instance, if the first bandwidth is 5MHz, on a 5MHz carrier, the network device uses only one PRB for PDSCH transmission, leaving the other PRBs idle and unable to perform any downlink transmission. The network device concentrates the power allocated to the 5MHz bandwidth on the single PRB used for PDSCH transmission, thereby improving the transmission performance of the PDSCH and thus increasing the success rate of the terminal device receiving the PDSCH in scenarios with high interference.

[0208] Figure 8 illustrates an example where the first frequency domain resource includes multiple (e.g., four) frequency domain units. In the example of Figure 8, the first frequency domain resource can be a continuous segment of resources within a first bandwidth. As shown in Figure 8, for example, the first frequency domain resource is RB#15, RB#16, RB#17, and RB#18. The network device transmits a first message on RB#15, RB#16, RB#17, and RB#18. The remaining RBs in the first bandwidth, excluding RB#15, RB#16, RB#17, and RB#18, may not transmit information or signals. The network device can allocate more or all of the power value P0 configured in the first bandwidth to RB#15, RB#16, RB#17, and RB#18 to increase the power value (or the power of the first message). For example, the power value of one of the RBs RB#15, RB#16, RB#17 and RB#18 can be (P0 / 4); another example is that the power value of one of the RBs RB#15, RB#16, RB#17 and RB#18 is a value smaller than (P0 / 4) but larger than (P0 / 13), and the " / " can mean division by.

[0209] As illustrated in Figures 7 and 8, the first frequency domain resource can be a continuous segment of resources within the first bandwidth. For example, the first frequency domain resource may be a portion of the first bandwidth, occupying a relatively narrow bandwidth; in other words, the first message is transmitted via narrowband. In this scheme, the total bandwidth occupied by the first message is small, so the network device can concentrate the power value of the first bandwidth onto a portion of it, thereby increasing the power value of that portion and thus improving the performance of the first message transmitted on that portion of the bandwidth. For instance, the first message can be mapped to a portion of the first bandwidth, thus concentrating the bandwidth occupied by the first message, resulting in a small total bandwidth usage. Both the transmitter and receiver can then use narrowband to complete communication and transmission.

[0210] For example, at least two adjacent frequency domain units in the first frequency domain resource are discontinuous frequency domain resources in the first bandwidth. For instance, the first message can be mapped to the first bandwidth, the bandwidth of the first message can be the first bandwidth, and the first message occupies discontinuous frequency domain resources in the first bandwidth, thus obtaining frequency diversity gain for transmission.

[0211] For example, the first message is mapped to the first bandwidth based on the first comb tooth value, where the first comb tooth value is an integer greater than 1, and at least two adjacent frequency domain units in the first frequency domain resource are separated by (first comb tooth value - 1) frequency domain resources in the first bandwidth.

[0212] Please refer to Figure 9, which illustrates an example where the first frequency domain resource includes multiple (e.g., four) frequency domain units. In the example of Figure 9, the first frequency domain resource can be a discontinuous resource in the first bandwidth. As shown in Figure 9, the first message is mapped to the first bandwidth with a comb tooth value greater than 1. Figure 9 illustrates this with a first comb tooth value of 4 as an example. The first message occupies one RB every four RBs. Two adjacent RBs (e.g., RB#10 and RB#14) in the RBs occupied by the first message are discontinuous in the first bandwidth and are separated by three RBs. For example, the first frequency domain resource is RB#10, RB#14, and RB#18. The network device transmits the first message on RB#10, RB#14, and RB#18. The other RBs in the first bandwidth, excluding RB#10, RB#14, and RB#18, may not transmit information or signals. The network device may allocate more or all of the power value P0 configured in the first bandwidth to RB#10, RB#14, and RB#18 to increase the power value of the first message (or the power value of the first message). For example, the power value of one of RBs in RB#10, RB#14, and RB#18 can be (P0 / 4); another example is that the power value of one of RBs in RB#10, RB#14, and RB#18 is a value smaller than (P0 / 4) but larger than (P0 / 13), and the " / " can mean division by.

[0213] Figure 10 illustrates an example where the first frequency domain resource includes multiple (e.g., three) frequency domain units. In the example of Figure 10, some resources in the first frequency domain resource can be discontinuous resources in the first bandwidth, and some resources can be continuous resources in the first bandwidth. As shown in Figure 10, the first frequency domain resources are RB#13, RB#16, and RB#17. RB#13 and RB#16 are discontinuous resources in the first bandwidth, while RB#16 and RB7 are continuous resources in the first bandwidth. The description of the power values ​​of the frequencies in Figure 10 can be found in at least one of the descriptions in Figures 7, 8, or 9, and will not be repeated here.

[0214] As can be seen from the schemes in Figures 9 and 10, the distribution of the first frequency domain resources within the first bandwidth is quite flexible. For example, the total bandwidth occupied by the first message can be the first bandwidth, or it can be something other than the first bandwidth. However, since the frequency domain resources occupied by the first message are only a portion of the resources within the first bandwidth, the network device can concentrate the power value of the first bandwidth onto a portion of the first bandwidth, thereby increasing the power value of that portion of the bandwidth and thus improving the performance of the first message transmitted on that portion of the bandwidth.

[0215] For ease of understanding, this application defines two transmission methods, referred to as the first transmission method and the second transmission method. The first transmission method and the second transmission method can also be replaced with other names. For example, the first transmission method can also be replaced with: narrowband transmission method, narrowband mode, downlink narrowband transmission method, downlink narrowband mode, power aggregation transmission method, power aggregation mode, downlink power aggregation transmission method, downlink power aggregation mode, first transmission mode, first method, first mode, etc. Similarly, the second transmission method can also be replaced with: wideband transmission method, wideband mode, downlink wideband transmission method, downlink wideband mode, transmission method without power aggregation, mode without power aggregation, downlink transmission method without power aggregation, downlink mode without power aggregation, second transmission mode, second method, second mode, etc.

[0216] For example, in this embodiment of the application, the network device sending the first message may include / be replaced by: the network device sending the first message using a first transmission method. Correspondingly, the terminal device receives the first message using the first transmission method.

[0217] The bandwidth size described in the embodiments of this application may include / be replaced by: bandwidth dimensions, bandwidth range, or bandwidth width, etc. The bandwidth size can also be expressed as "size" in English. The bandwidth of the first transmission method in the embodiments of this application may also include / be replaced by: the bandwidth used by the network device when transmitting messages through the first transmission method, or the bandwidth corresponding to the first transmission method. The bandwidth of the second transmission method in the embodiments of this application may also include / be replaced by: the bandwidth used by the network device when transmitting messages through the second transmission method, or the bandwidth corresponding to the second transmission method. The term "bandwidth" in the embodiments of this application may also be replaced by "transmission bandwidth".

[0218] For example, the bandwidth (or size) of the first transmission method is less than or equal to the bandwidth of the second transmission method. For example, when the first message is transmitted using the first transmission method, the actual bandwidth occupied by the first message is, for example, bandwidth #1. When the first message is transmitted using the second transmission method, the actual bandwidth occupied by the first message is, for example, bandwidth #2. The size (or size) of bandwidth #1 is less than or equal to bandwidth #2, and the number of frequency domain units (e.g., the number of PRBs) included in bandwidth #1 is less than the number of frequency domain units (e.g., the number of PRBs) included in bandwidth #2.

[0219] For example, the first transmission mode (or narrowband transmission mode) includes / means that: on the carrier or BWP bandwidth (e.g., 5MHz, 10MHz, etc.) of the entire transmission (set (or specified), the network device uses a portion of the bandwidth (e.g., bandwidth #1) to send messages, and / or the terminal device uses a portion of the bandwidth (e.g., bandwidth #1) to receive messages. For example, the remaining portion of the bandwidth (the bandwidth of the BWP bandwidth other than bandwidth #1) is left unused for transmission, so that the network device can concentrate all the power on the BWP bandwidth onto the bandwidth used for transmission (i.e., bandwidth #1).

[0220] In this application embodiment, the power value of the first transmission method may also include / be replaced by: the power value used by the network device when transmitting messages through the first transmission method, or the power value corresponding to the first transmission method. Similarly, in this application embodiment, the power value of the second transmission method may also include / be replaced by: the power value used by the network device when transmitting messages through the second transmission method, or the power value corresponding to the second transmission method.

[0221] For example, the power value of the first transmission method is less than or equal to the power value of the second transmission method. For instance, when the first message is transmitted using the first transmission method, the actual bandwidth occupied by the first message is, for example, bandwidth #1, and the power value of the first message is power value #1. When the first message is transmitted using the second transmission method, the actual bandwidth occupied by the first message is, for example, bandwidth #2, and the power value of the first message is power value #2. Power value #1 is less than or equal to power value #2.

[0222] For example, the second transmission mode can be relative to the first transmission mode; for instance, any transmission mode other than the first transmission mode can be called the second transmission mode. For example, the second transmission mode (or normal mode) includes / is / refers to: information transmission between the network device and the terminal device on a carrier or BWP bandwidth (e.g., 5MHz, 10MHz, etc.) set (or specified) for the entire transmission. For example, the network device sends messages on the carrier or BWP bandwidth set (or specified), and / or the terminal device receives messages on the carrier or BWP bandwidth set (or specified). Optionally, in the second transmission mode, the network device can send signals to different terminal devices on different bandwidths of the carrier or BWP bandwidth set (or specified). Optionally, in the second transmission mode, the network device configures the same or similar unit transmission power values ​​for different terminal devices on different bandwidths of the carrier or BWP bandwidth set (or specified). Optionally, "approximate" means that the deviation of the unit transmit power value set for different terminal devices does not exceed a preset threshold, such as 3dB, 5dB, 6dB, etc. For example, the second transmission mode (or normal mode) includes / is / means that: the terminal device does not use extended coverage methods such as repetitive transmission to access the network, and / or, the network device does not use extended coverage methods such as repetitive transmission to send messages. For example, when the signal reception quality of the terminal device (e.g., the signal reception SNR) is above (-7)dB, the network device can establish communication with the terminal device without additional coverage extension transmission methods; this transmission mode can be called the second transmission mode.

[0223] For example, the states of a terminal device can also be defined in this embodiment. For example, the states of a terminal device may include a normal state and an abnormal state. As another example, the states of a network device can also be defined in this embodiment. For example, the states of a network device may include a normal state and an abnormal state. Normal and abnormal states can also be replaced with names such as State 1 and State 2, etc. For example, an abnormal state can include / be replaced with: low signal quality state, low SNR state, or strong signal interference state, etc.

[0224] For example, when a terminal device is in an abnormal state, the network device can send a message to the terminal device using a first transmission method. In another possible implementation, the state of the network device when sending a message via the first transmission method can also be referred to as an abnormal state. For another example, when the terminal device is in a normal state, the network device can send a message to the terminal device using a second transmission method. For another example, the state in which the network device sends a message to the terminal device via the second transmission method is referred to as the normal state of the network device. A normal state can be relative to an abnormal state; for example, a state other than an abnormal state can be called a normal state, and conversely, a normal state (a state other than a normal state) can also be called an abnormal state.

[0225] For example, when a terminal device accesses the network in a normal state (or in normal mode, or according to the signal transmitted in the second transmission mode), the network device sends information (e.g., configuration information corresponding to the first transmission mode, such as bandwidth size, bandwidth location, etc.) to the terminal device in a normal state (or in normal mode, or according to the signal transmitted in the second transmission mode). When the terminal device is in an abnormal state (e.g., a low SNR state), the terminal device receives and detects downlink signals (e.g., signals for time-frequency synchronization such as SSB or other signals, such as channel state information reference signal (CSI-RS), tracking reference signal (TRS), or positioning reference signal (PRS) etc.) and channels (PDCCH and / or PDSCH) sent by the network device in the first transmission mode.

[0226] For example, the BWP bandwidth is 10MHz, and the total transmission power on this 10MHz is P0. When the network device transmits message #1 using the first transmission method, the network device transmits message #1 within bandwidth #1 (bandwidth #1 is a portion of the 10MHz, such as 1MHz), and the transmission power value of message #1 remains P0 (or a value slightly smaller than P0). No information is transmitted on the bandwidth outside of bandwidth #1 within this BWP bandwidth. When the network device transmits message #1 using the second transmission method, the network device transmits within the entire BWP bandwidth, specifically bandwidth #1, and the transmission power value of bandwidth #1 remains P0. It can be seen that when the network device transmits message #1 using the first transmission method, it concentrates the power value on bandwidth #1. For example, message #1 can be the first message. This can improve link performance.

[0227] In another possible implementation, the first message can be used to indicate that the terminal device has missed a signal and / or message. For example, the first message can be an alert message, a prompt message, or an notification message, etc.

[0228] In one possible implementation, the terminal device sends information indicating that it has missed receiving signals and / or messages. Thus, the network device can determine whether the terminal device has missed receiving signals and / or messages based on the received information, and then send a first message to the terminal device on a first frequency domain resource after receiving the information. Alternatively, the network device can determine whether the terminal device has missed receiving signals and / or messages itself.

[0229] In another possible implementation, the terminal device can receive the first message if the terminal device has missed receiving signals and / or messages. For example, the terminal device can determine for itself whether it has missed receiving signals and / or messages.

[0230] In one possible implementation, the terminal device's missed signal and / or message includes at least one of the following: A1, A2, A3, A4, A5, or A6. For example, information sent by the terminal device to indicate that the terminal device has missed the signal and / or message may include information indicating at least one of the following: A1, A2, A3, A4, A5, or A6. As another example, the network device may send a first message on a first frequency domain resource if at least one of the following: A1, A2, A3, A4, A5, or A6 is satisfied. As another example, the first message may indicate at least one of the following: A1, A2, A3, A4, A5, or A6. As another example, the terminal device may receive the first message on a first frequency domain resource if at least one of the following: A1, A2, A3, A4, A5, or A6 is satisfied.

[0231] In another possible implementation, the network device may also obtain the state of the terminal device before sending the first message. The state of the terminal device may include, for example, a normal state or an abnormal state. For example, the network device may send the first message to the terminal device if the terminal device is in an abnormal state. Alternatively, the network device may not send the first message to the terminal device if the terminal device is in a normal state. For example, the network device may determine that the terminal device is in an abnormal state if at least one of the following: A1, A2, A3, A4, A5, or A6 is satisfied. Alternatively, the network device may determine that the terminal device is in a normal state if it determines that the terminal device is not in a perfectly normal state.

[0232] Content A1: The terminal device has missed receiving information.

[0233] For example, a network device needs to send information to a terminal device, but the network device cannot successfully send the information through the established connection with the terminal device, resulting in the terminal device missing the information. If the network device determines that the terminal device has missed receiving the information, it can infer that the terminal device may be in an area with strong interference (or poor signal quality). In this scenario, the network device sends a first message to the terminal device on the first frequency domain resource. Because the power value of the first message is increased, this approach can improve the success rate of the terminal device receiving the first message. The user can then know from the first message that they may have missed receiving the information and can choose whether to move to a more open area (or an area with better signal quality) for subsequent communication based on the actual situation.

[0234] In another possible implementation, the network device can continue to send information that the terminal device missed receiving, or discard the information, when the terminal device is in an area with good signal quality.

[0235] Content A2: The terminal device has missed receiving calls.

[0236] For example, if other terminal devices need to send information to this terminal device but the call doesn't go through, the terminal device may miss the call. If the network device determines that the terminal device has missed a call, it can infer that the terminal device may be in an area with strong interference (or poor signal quality). In this scenario, the network device sends a first message to the terminal device on the first frequency domain resource. Because the power value of the first message is increased, this scheme can improve the success rate of the terminal device receiving the first message. The user can then know from the first message that they may have missed a call and can choose whether to move to a more open area (or an area with better signal quality) for subsequent communication.

[0237] In another possible implementation, the network device can continue to send information about missed calls, such as the phone number of the missed call, to the terminal device when the terminal device is in an area with good signal quality, so that the user can more accurately guide the user to the caller.

[0238] Content A3: The terminal device was paged but not paged.

[0239] For example, if a network device needs to page a terminal device but fails to receive the page, the network device can infer that the terminal device may be in an area with strong interference (or poor signal quality). In this scenario, the network device sends a first message to the terminal device on the first frequency domain resource. Because the power value of the first message is increased, this scheme can improve the success rate of the terminal device receiving the first message. The user can then know from the first message that they were just paged but failed to receive the page, and can choose whether to move to a more open area (or an area with better signal quality) for subsequent communication based on the actual situation.

[0240] In another possible implementation, the network device can continue to page the terminal device when the terminal device is in an area with good signal quality, and then send relevant information about the paging to the terminal device, such as the reason for the paging and the initiator of the paging, so that the user can quickly learn about the missed paging information.

[0241] Content A4: The terminal device failed to perform time and frequency synchronization.

[0242] Content A4 may include / be / mean that: if the terminal device fails to perform time-frequency synchronization according to the signal for time-frequency synchronization transmitted under the second transmission mode, or if the terminal device fails to perform time-frequency synchronization according to the signal for time-frequency synchronization transmitted under the second transmission mode under normal conditions, or if the terminal device does not use a conventional (or existing, or normal, post-broadband) signal for time-frequency synchronization (e.g., SSB) for time-frequency synchronization, then the terminal device cannot access the network.

[0243] The signals transmitted in the second transmission mode for time-frequency synchronization may include, for example, SSB or other signals that can be used for time-frequency synchronization, such as CSI-RS, TRS, or PRS.

[0244] Content A5: The terminal device failed to connect to the network.

[0245] Content A5 may include / be / mean that: the terminal device fails to successfully access the network according to the signal transmitted under the second transmission mode, or the terminal device does not use a conventional (or existing, or normal, post-broadband) signal (e.g., SSB) for time-frequency synchronization, and thus the terminal device cannot access the network.

[0246] Content A6: The received signal quality of the terminal device is less than or not greater than the signal quality threshold.

[0247] The quality of the received signal of a terminal device can refer to the quality of the signal received by the terminal device. For example, the quality of the signal received by the terminal device under normal conditions (the description parameters of normal conditions will be discussed later and will not be described here).

[0248] A terminal device's received signal quality being less than or not greater than a signal quality threshold can also be described as having low signal quality.

[0249] The signal quality in this application embodiment may be represented by any one or more of SNR, SINR, RSRP, RSRQ, RSSI, and CQI. Related details can be found in the foregoing description and will not be repeated here. When signal quality includes multiple parameters, each of these parameters may individually correspond to a signal quality threshold, and each signal quality parameter is less than its corresponding threshold. For example, if the signal quality includes SNR and RSRP, then content A6 may include / be replaced with: SNR is less than the SNR threshold, and / or, RSRP is less than the RSRP threshold.

[0250] If at least one of the above conditions is met, the terminal device may be in a state where it is difficult to receive messages, and the terminal device may be unable to receive information with low power values. In these scenarios, sending the first message from the network device in the first frequency domain resource can increase the probability that the terminal device will successfully receive the first message. Furthermore, this solution can more accurately determine the occasion in which the terminal device needs to receive the first message and send the first message for the terminal device in these scenarios, making it more suitable for the actual needs of such terminal devices.

[0251] The technical reasons why narrowband mode can improve coverage are further explained below: SNR = CNR·M c / N RB ...Formula (1) SNR=CNR+10log 10 (M c / N RB )...Formula (2)

[0252] In formulas (1) and (2), CNR is the carrier-to-noise ratio (CNR), and M... c N represents the size of the first bandwidth. RB Let be the bandwidth of the first frequency domain resource, and SNR be the SNR of the first frequency domain resource. Here, formula (1) represents the arithmetic value, and formula (2) represents the logarithmic value.

[0253] It can be seen that the SNR on the first frequency domain resource is the CNR on the first bandwidth (or carrier). For example, if the first bandwidth is 24 PRB and the first frequency domain resource is 1 PRB, then the SNR = 24 CNR. This is equivalent to using the first frequency domain resource for transmission, under the condition that the total power of the network device is fixed, which can improve the signal reception quality of the terminal device (e.g., the SNR of the signal reception) by 24 times (13.8dB). This is also the reason why coverage can be improved by using some frequency domain resources (e.g., narrowband transmission). For example, when CNR = -20dB, through the above-mentioned first frequency domain resource transmission, SNR = -6.2dB, and the SNR value is already completely within the normal SNR range of the system. If the solution provided in the embodiments of this application is not adopted, the network device may need to retransmit the first message multiple times in order for the terminal device to receive the first message. However, the solution provided in the embodiments of this application can reduce the number of retransmissions of the first message, thereby reducing the amount of time domain resources used to repeatedly transmit the first message, reducing transmission latency, and improving transmission efficiency.

[0254] In another possible implementation, the terminal device may acquire information that can assist it in receiving the first message. For example, the terminal device may receive at least one of the following information B1, information B2, information B3, or information B4.

[0255] Information B1 is used to indicate the number of frequency domain units in the first frequency domain resource.

[0256] For example, information used to indicate the number of frequency domain units in the first frequency domain resource may include / be replaced with information used to indicate the bandwidth size of the first frequency domain resource.

[0257] Information B2 is used to indicate the location of the first frequency domain resource in the first bandwidth.

[0258] For example, information used to indicate the location of a first frequency domain resource in a first bandwidth may include: a frequency offset value used to indicate the frequency offset of a frequency domain cell (e.g., a frequency domain cell at the starting position in the frequency domain) within the first bandwidth of the first frequency domain resource.

[0259] The resources in the first frequency domain may be a continuous segment of resources within the first bandwidth, or they may be discontinuous resources within the first bandwidth. For example, if the first message is mapped using comb teeth, the first frequency domain resources are frequency domain resources that appear at equal intervals within the first bandwidth. In this case, the information used to indicate the position of the first frequency domain resources within the first bandwidth may further include: information used to indicate the comb tooth value corresponding to the first message. The information used to indicate the comb tooth value corresponding to the first message may include / be replaced by: the offset value of the frequency domain resources occupied by the first message within the comb tooth interval, etc. In the embodiments of this application, the comb tooth value corresponding to the first message may also be referred to as the comb tooth value corresponding to the first frequency domain resource. The relevant content of the comb tooth value is described above and will not be repeated here.

[0260] Referring to Figure 7, for example, the first frequency domain resource includes one RB. Information B2 indicates that the frequency offset of the RB in the first frequency domain resource within the first bandwidth is 4 RBs. Based on this information, the terminal device can determine that within the first bandwidth, the first frequency domain resource is the RB that is 4 RBs away from the starting position of the first bandwidth, that is, the 5th RB (RB#15) is the RB in the first frequency domain resource.

[0261] Referring to Figure 8, for example, the first frequency domain resource includes multiple RBs. Information B2 indicates that the frequency offset of the starting RB in the first frequency domain resource within the first bandwidth is 4 RBs. Based on this information, the terminal device can determine that within the first bandwidth, the first frequency domain resource is an RB 4 RBs away from the starting position of the first bandwidth, that is, the 5th RB (RB#15) is the starting RB in the first frequency domain resource. The terminal device determines that the bandwidth of the first frequency domain resource is 4 RBs, and can determine that the first frequency domain resource is a continuous segment of frequency domain resources within the first bandwidth. Therefore, the terminal device can determine that the first frequency domain resource includes RB#15, RB#16, RB#17, and RB#18.

[0262] Referring to Figure 9, for example, the first frequency domain resource includes multiple RBs. Information B2 indicates that the frequency offset of the RB at the starting position in the first frequency domain resource within the first bandwidth is 0 RBs. Based on this information, the terminal device can determine that within the first bandwidth, the first frequency domain resource is the first RB (RB#11) located at the starting position of the first bandwidth. The information used to indicate the position of the first frequency domain resource within the first bandwidth also indicates that the comb tooth value corresponding to the first frequency domain resource is 4. Therefore, the terminal device can determine that two adjacent frequency domain resources in the first frequency domain resource are two frequency domain resources separated by 3 RBs in the first bandwidth. Consequently, the terminal device determines that the first frequency domain resource includes RB#11, RB#15, RB#16, and RB#113.

[0263] Information B3 is used to indicate the power value corresponding to the first frequency domain resource.

[0264] The network device can send a first message on the first frequency domain resource using the power value corresponding to that resource. The terminal device can receive information indicating the power value corresponding to the first frequency domain resource. For example, the terminal device can measure the current path loss based on the information indicating the power value corresponding to the first frequency domain resource. Furthermore, the terminal device can also determine whether current coverage is limited based on the path loss value. The terminal device can also report this path loss value to the network device so that the network device can determine the current link quality.

[0265] Information B4 is used to indicate the time-domain resources occupied by the first message.

[0266] The terminal device can receive the first message more quickly based on the information used to indicate the time domain resources occupied by the first message.

[0267] In addition to the four types of information shown above, the terminal device can also obtain other information to assist the terminal device in receiving the first message, thereby improving the success rate of the terminal device receiving the first message.

[0268] In this embodiment of the application, multiple pieces of information (e.g., any of information B1, B2, B3, or B4) sent by the network device to the terminal device can be carried in the same message or in different messages. There are multiple ways to carry at least one of information B1, B2, B3, or B4 sent by the network device.

[0269] For example, at least one of information B1, information B2, information B3, or information B4 can be carried in at least one of: system message, MIB, or user public message. This increases the probability that the terminal device will successfully receive these messages. Furthermore, carrying these messages in at least one of system message, MIB, or user public message reduces the amount of data the terminal device needs to receive in scenarios with strong signal interference, and also increases the probability that the terminal device will successfully receive the first configuration information. For example, in embodiments of this application, the network device sending the first configuration information may include / be replaced by: the network device sending the first configuration information using a first transmission method.

[0270] For example, at least one of information B1, information B2, information B3, or information B4 may be carried in the first control information. The first control information may include, for example, DCI. In this embodiment, the network device can flexibly adjust the various parameters carried in the first control information, thereby dynamically adjusting these parameters to better match the actual situation.

[0271] In another possible implementation, at least one of information B1, information B2, information B3, or information B4 can be implicitly indicated, thereby reducing the amount of information to be transmitted and lowering resource consumption.

[0272] The following examples, using information B2 (information indicating the location of a first frequency domain resource in a first bandwidth) and information B1 (information indicating the number of frequency domain units in a first frequency domain resource) as examples, illustrate several possible information indication methods through examples C1, C2, C3, C4, and C5. Other information indication methods can also be found in these examples and will not be elaborated further.

[0273] Example C1: Information indicating the location of the first frequency domain resource within the first bandwidth is carried in the first control information. Alternatively, other information may be carried in the first configuration information, such as information indicating the number of frequency domain units in the first frequency domain resource, or information indicating the bandwidth size of the first bandwidth.

[0274] In this embodiment, the first configuration information can be transmitted by the network device via a second transmission method, or sent by the network device in a normal state. For example, the first configuration information may be carried in at least one of system messages, MIBs, or user public messages. This increases the probability that the terminal device can successfully receive the first configuration information. For instance, the terminal device can receive the first configuration information in an environment with good signal, and then, when entering a scenario with strong signal interference, receive the first message based on the pre-received first configuration information. Since the first configuration information is carried in at least one of system messages, MIBs, or user public messages, this scheme reduces the amount of data the terminal device needs to receive in scenarios with strong signal interference, and also increases the probability that the terminal device can successfully receive the first configuration information.

[0275] In this embodiment, the first configuration information can be sent periodically or triggered by certain events before the first message. For example, the network device can send the first configuration information if it determines that the terminal device has missed receiving calls and / or messages. The terminal device can receive the first configuration information in advance and then receive the first message according to the first configuration information, thereby improving the success rate of receiving the first message.

[0276] In this embodiment, the network device may also send first control information. The first control information may be transmitted by the network device via a second transmission method, or sent when the network device is in an abnormal state, or sent when the terminal device is in a scenario with strong signal interference. For example, in this embodiment, the network device sending the first control information may include / be replaced by: the network device sending the first control information using a first transmission method. Correspondingly, the terminal device receives the first control information using the first transmission method. The transmission method of the first control information may be similar to the transmission method of the subsequent second control information, and will not be described in detail here. The first control information and the second control information may be the same information, or they may be different information.

[0277] In example C1, the information indicating the number of frequency domain units in the first frequency domain resource is carried within the first configuration information; for example, the information about the first bandwidth can also be carried within the first configuration information. The network device dynamically indicates the position of the first frequency domain resource within the first bandwidth through first control information (e.g., DCI). The number of bits occupied by the information in the first control information (e.g., DCI) indicating the position of the first frequency domain resource within the first bandwidth is:

[0278] Where M represents the number of frequency domain units in the first bandwidth, and L represents the number of frequency domain units in the first frequency domain resource. For example, if M = 25 and L = 2, then the information in the first control information (e.g., DCI) indicating the position of the first frequency domain resource in the first bandwidth requires a maximum of 4 bits. Alternatively, if M = 25 and L = 1, then the information in the first control information (e.g., DCI) indicating the position of the first frequency domain resource in the first bandwidth requires a maximum of 5 bits.

[0279] As can be seen, in this example, if the first control information only indicates the position of the first frequency domain resource in the first bandwidth, and other positions are carried in the first configuration information or other information, then the number of bits occupied by the first control information is small, thereby saving resource overhead.

[0280] Example C2: Information indicating the location of the first frequency domain resource within the first bandwidth is carried in the first configuration information. As another example, information indicating the number of frequency domain units in the first frequency domain resource is carried in the first control information.

[0281] In this way, the network device can set a relatively fixed location for the first frequency domain resource, which can be semi-static or statically configured, thereby reducing signaling overhead.

[0282] Example C3: Information indicating the location of the first frequency domain resource in the first bandwidth and information indicating the number of frequency domain units in the first frequency domain resource are carried in the first control information.

[0283] In this way, the network device can dynamically adjust the location of the first frequency domain resources and the number of frequency domain units in the first frequency domain resources, thereby making these timely configurations more flexible.

[0284] Example C4: Information indicating the location of the first frequency domain resource within the first bandwidth and information indicating the number of frequency domain units in the first frequency domain resource are carried within the first configuration information.

[0285] In this way, the network device can adjust the position of the first frequency domain resource semi-statically or statically, and can also adjust the number of frequency domain units in the first frequency domain resource semi-statically or statically, thereby reducing signaling overhead.

[0286] Example C5: The network device implicitly indicates information used to indicate the location of a first frequency domain resource in the first bandwidth.

[0287] The information implicitly indicated by the network device does not require additional configuration through other signaling, thus saving signaling overhead.

[0288] For example, the location of the first frequency domain resource in the first bandwidth is associated with the cell that sent the first message. Thus, the terminal device can determine the location of the first frequency domain resource in the first bandwidth based on the cell of the first message. For instance, the network device and the terminal device can respectively obtain the association between the cell of the first message and the location of the first frequency domain resource in the first bandwidth. This association can also be replaced by a correspondence relationship, which can be negotiated, pre-set, or set by the network device and then sent to the terminal device. In this way, the terminal device can find the location of the first frequency domain resource associated with the cell of the first message in the first bandwidth based on this association. In this scheme, the network device no longer needs to send other information indicating the location of the first frequency domain resource in the first bandwidth, thereby reducing signaling overhead.

[0289] For example, the location of the first frequency domain resource in the first bandwidth is associated with the beam footprint of the first message. For instance, the beam footprint is the area on the ground illuminated by the direction of transmission from the base station antenna. The beam footprint can also be replaced with "footprint." The beam footprint can be indicated by a beam footprint identifier or by the geographical location information of the corresponding beam footprint. Optionally, the geographical location information of the beam footprint can be an indication of the center location of the beam footprint, or information about the location and size of the ground area it occupies. For example, the terminal device can determine the location of the first frequency domain resource in the first bandwidth based on the beam footprint of the first message. For example, the network device and the terminal device can respectively obtain the association between the beam footprint of the first message and the location of the first frequency domain resource in the first bandwidth. This association can also be replaced by a correspondence relationship, which can be negotiated, pre-set, or set by the network device and sent to the terminal device. Thus, the terminal device can find the location of the first frequency domain resource associated with the beam footprint of the first message in the first bandwidth based on this association. In this scheme, the network device no longer needs to send other information indicating the location of the first frequency domain resource in the first bandwidth, thereby reducing signaling overhead.

[0290] In another possible implementation, the position of the first frequency domain resource in the first bandwidth can also be associated with the frequency domain position of the SSB. The relevant schemes are described above and are similar, so they will not be repeated here.

[0291] In another possible implementation, other cells may also be transmitting messages corresponding to other terminal devices, indicating that other terminal devices have missed receiving calls and / or information. For example, if the first message is an alarm message, other cells, or other beams within the same cell, may also be sending alarm messages (e.g., the first message) to other terminal devices. In one possible implementation, when alarm messages (e.g., data channels carrying alarm messages) are being transmitted on different beams within the same cell, the frequency domain positions of these alarm messages (e.g., data channels carrying alarm messages) may be different and / or the amount of frequency domain resources they occupy may be different. In another possible implementation, when alarm messages are being transmitted on different beams within different cells, the frequency domain positions of these alarm messages may be different and / or the amount of frequency domain resources they occupy may be different. In yet another possible implementation, when alarm messages are being transmitted on the same beam within different cells, the frequency domain positions of these alarm messages may be different and / or the amount of frequency domain resources they occupy may be different. This can reduce interference between beams and / or cells, improve the signal reception quality of the terminal device (e.g., signal reception SNR), and enhance detection performance.

[0292] Based on the embodiments shown in Figures 1, 2, 4A, 4B, 4C, 5, 6, 7, 8, 9, and 10, and the other content described above, Figure 11 executively illustrates a possible flowchart of a communication method provided by an embodiment of this application. Figure 11 uses a first communication device and a second communication device as the executing entities, and executors such as the first communication device being a network device and the second communication device being a terminal device. For relevant descriptions of the first communication device, the second communication device, the network device, the terminal device, and the NTN device, please refer to the descriptions in Figures 5 and / or 6 above, and will not be repeated here.

[0293] The following description is based on Figure 11.

[0294] Step 1101: The network device sends the second control information.

[0295] Correspondingly, the terminal device receives the second control information.

[0296] For example, the second control information can be used to schedule the first message. As another example, the network device may transmit the second control information in a second frequency domain resource if the terminal device misses receiving a signal and / or message.

[0297] For example, in the embodiments of this application, the network device sending the second control information may include / be replaced by: the network device sending the second control information using the first transmission method.

[0298] The second control information can be used to schedule the first message or other messages. For example, if the first message is called an alarm message, the network device may send multiple alarm messages, and the first message is one of them. The network device may also send a second message, which is also an alarm message. The second control information may be used to schedule the second message. For example, an alarm message can be understood as a type of the first message. The transmission method and other related content of the second message can be found in the aforementioned description of the first message, and will not be repeated here. In this embodiment, the aforementioned first control information is used to schedule the first message. The second control information and the first control information may be the same information or different information.

[0299] Figure 12 is a schematic diagram of another possible information transmission method provided by an embodiment of this application. Figure 12 also exemplarily illustrates the relationship between the first control information, the second control information, and the first message. Figure 12 illustrates this with the example of the first message being carried on PDSCH#1 and the second message being carried on PDSCH#2. As shown in Figure 12(a), the second control information is used to schedule the first message (e.g., PDSCH#1). In this example, the first control information and the second control information are the same information. As shown in Figure 12(b), the first control information is used to schedule the first message (e.g., PDSCH#1), and the second control information is used to schedule the second message (e.g., PDSCH#2). In this example, the first control information and the second control information are two different pieces of information. Figure 12 illustrates this with the example of frequency division multiplexing of resources carrying the second control information and the first message. In practical applications, the resource allocation method for the second control information and the first message can be flexibly set.

[0300] In one possible implementation, the second frequency domain resource is a portion of the resources in the second bandwidth.

[0301] In one possible implementation, the power value of the second frequency domain resource is associated with the power value of the second bandwidth. In embodiments of this application, the power value of the second frequency domain resource may also include / be replaced by: the power value used by the network device to transmit information on the second frequency domain resource. The power value of the second bandwidth may also include / be replaced by: the power value used by the network device to transmit information (or, transmit information and / or signals) on the second bandwidth.

[0302] For example, the power value of a second frequency domain resource (or the total power value of the second frequency domain resource) is associated with the power value of a second bandwidth (or the total power value of the second bandwidth, or the maximum power value of the second bandwidth, or the maximum allowable power value of the second bandwidth). For example, the power value of the second frequency domain resource may be equal to the power value of the second bandwidth. Alternatively, the power value of the second frequency domain resource may not be equal to (e.g., less than, or greater than) the power value of the second bandwidth. However, the power value of the second frequency domain resource will not differ significantly from the power value of the second bandwidth. For example, the absolute value of the difference between the power value of the second bandwidth and the power value of the second frequency domain resource may be less than a specified value, which may be a protocol-defined value or a negotiated value.

[0303] For example, the power value corresponding to a frequency domain cell in the second frequency domain resource is greater than the second power value. For example, the second power value is the power value of a frequency domain cell determined based on the power value of the second bandwidth and the number of frequency domain cells in the second bandwidth. For example, the second power value is the power value of one frequency domain cell when the power value of the second bandwidth is allocated to all frequency domain cells in the second bandwidth.

[0304] For example, the second power value is the quotient of the power value of the second bandwidth and the number of frequency domain units in the second bandwidth. For instance, if the power allocated to the second bandwidth is P1 and the number of frequency domain units in the second bandwidth is y, then the second power value can be the value of (P1 / y) (or the value of (P1 / y) rounded up or down), or the second power value is a value determined based on (P1 / y). For example, the second power value can be the integer part of the value of (P1 / y), or the second power value can be a value obtained after processing (P1 / y). For example, the second power value can be a value obtained by performing a certain operation on a set value and (P1 / y), such as adding 1 to (P1 / y).

[0305] In the second frequency domain resource, the power value corresponding to a frequency domain unit is greater than the second power value, which can improve the anti-signal fading capability of the second control information, thereby improving the transmission performance of the second control information, and increasing the probability that the terminal device will receive the second control information.

[0306] For example, if a terminal device misses a signal and / or message, it may be in an environment with a low SNR (e.g., a user carrying the terminal device may be walking in a forest), where signal interference is significant. In such cases, the probability of the terminal device receiving information is low, and it may be unable to notify the terminal device of any emergencies. In one possible implementation of this application, when the terminal device is in a situation where it misses a signal and / or message (e.g., in a low SNR scenario or in a scenario with significant signal interference), the network device can transmit the second control information on a portion of the resources in the second bandwidth (i.e., the second frequency domain resources). This allows for a greater allocation of power values ​​on the second bandwidth to the second frequency domain resources, thereby increasing the power value corresponding to the frequency unit occupied by the second control information. This scheme can improve the transmission performance of the second control information and increase the probability that the terminal device receives the second control information.

[0307] For example, the second bandwidth can be the bandwidth of a carrier, the bandwidth of a BWP, or the bandwidth configured for a cell. As another example, the second control information is carried on a first data channel, which can be, for example, a PDSCH, and the second bandwidth can be the bandwidth configured for the PDSCH. For instance, the network device can allocate power values ​​configured on the bandwidth of a carrier, BWP, or cell to the second frequency domain resources. It can be seen that in these embodiments, the network device can allocate more power values ​​to the second frequency domain resources, thereby improving the transmission performance of the second control information.

[0308] For example, frequency domain resources in the second bandwidth other than those in the second frequency domain are not mapped to information and / or signals. For instance, only second control information is transmitted in the second bandwidth; no other information or signals are transmitted. These implementations allow the network device to allocate more (or all) of the power values ​​configured on the second bandwidth to the second control information, thereby improving the transmission performance of the second control information.

[0309] The distribution of the second frequency domain resources within the second bandwidth can be flexibly configured. The second frequency domain resources may include one frequency domain cell or multiple frequency domain cells. When the second frequency domain resources include multiple frequency domain cells, for example, at least two adjacent frequency domain cells in the second frequency domain resources are non-contiguous frequency domain resources within the second bandwidth. Alternatively, at least two adjacent frequency domain cells in the second frequency domain resources are contiguous frequency domain resources within the second bandwidth.

[0310] Figures 13, 14, 15, and 16 are schematic diagrams illustrating several possible information transmission methods provided in the embodiments of this application. The following examples, illustrated in Figures 13, 14, 15, and 16, demonstrate two distributions of second frequency domain resources within the second bandwidth. Figures 13, 14, 15, and 16 illustrate a single frequency domain unit as an RB. In practical applications, a single frequency domain unit can be other components; relevant examples can be found in the foregoing description of frequency domain units, which will not be repeated here. Figures 13, 14, 15, and 16 illustrate a second bandwidth including RB#21, RB#22, RB#23, RB#24, RB#25, RB#26, RB#27, RB#28, RB#29, RB#210, RB#211, RB#212, and RB#213. Figures 13, 14, 15, and 16 illustrate a second bandwidth configured with a power value of P0.

[0311] Figure 13 illustrates an example where the second frequency domain resource includes one frequency domain unit. In the example of Figure 13, the second frequency domain resource can be a continuous segment of resources within the second bandwidth. As shown in Figure 13, the second bandwidth includes 12 RBs, but the second frequency domain resource is only a portion of the resources within the second bandwidth, for example, RB#24. The network device transmits second control information on RB#24, while the other RBs in the second bandwidth, excluding RB#24, may not transmit information or signals. The network device can allocate more or all of the power value P1 configured in the second bandwidth to RB#24 to increase the power value of the second control information (or the power value of the second control information). For example, the power value on RB#24 is P1. Alternatively, the power value on RB#24 may be a value smaller than P1 but larger than (P1 / 13), where " / " represents division.

[0312] For example, when transmitting second control information (e.g., PDCCH) in the downlink, the network device uses a portion of the PRBs in the second bandwidth for power-focused message transmission. For instance, if the second bandwidth is 5MHz, on a 5MHz carrier, the network device uses only one PRB for transmitting the second control information (e.g., PDCCH), leaving the other PRBs idle and unable to perform any downlink transmission. The network device concentrates the power allocated to the 5MHz bandwidth on the single PRB used for transmitting the second control information (e.g., PDCCH), thereby improving the transmission performance of the second control information (e.g., PDCCH) and thus increasing the success rate of the terminal device receiving the second control information (e.g., PDCCH) in scenarios with significant interference.

[0313] Figure 14 illustrates an example where the second frequency domain resource includes multiple (e.g., four) frequency domain units. In the example of Figure 14, the second frequency domain resource can be a continuous segment of resources within the second bandwidth. As shown in Figure 14, for example, the second frequency domain resource is RB#25, RB#26, RB#27, and RB#28. The network device transmits second control information on RB#25, RB#26, RB#27, and RB#28. The remaining RBs in the second bandwidth, excluding RB#25, RB#26, RB#27, and RB#28, may not transmit information or signals. The network device can allocate more or all of the power value P1 configured in the second bandwidth to RB#25, RB#26, RB#27, and RB#28 to increase the power value of the second control information (or the power value of the second control information). For example, the power value of one of the RBs RB#25, RB#26, RB#27 and RB#28 can be (P1 / 4); another example is that the power value of one of the RBs RB#25, RB#26, RB#27 and RB#28 is a value smaller than (P1 / 4) but larger than (P1 / 13), and the " / " can mean division by.

[0314] As can be seen from the examples in Figures 13 and 14, the second frequency domain resource can be a continuous segment of resources within the second bandwidth. For example, the second frequency domain resource may be a portion of the second bandwidth, occupying a relatively narrow bandwidth; in other words, the second control information can be transmitted via narrowband. In this scheme, the total bandwidth occupied by the second control information is relatively small. Therefore, the network device can concentrate the power value of the second bandwidth onto a portion of the second bandwidth, thereby increasing the power value of that portion of the bandwidth and thus improving the performance of the second control information transmitted on that portion of the bandwidth.

[0315] For example, at least two adjacent frequency domain units in the second frequency domain resource are discontinuous frequency domain resources in the second bandwidth.

[0316] For example, the second control information is mapped to the second bandwidth based on the second comb tooth value, where the second comb tooth value is an integer greater than 1, and at least two adjacent frequency domain units in the second frequency domain resources are frequency domain resources spaced apart by (second comb tooth value - 1) in the second bandwidth.

[0317] Please refer to Figure 15, which illustrates an example where the second frequency domain resource includes multiple (e.g., four) frequency domain units. In the example of Figure 15, the second frequency domain resource can be a discontinuous resource within the second bandwidth. As shown in Figure 15, the second control information is mapped to the second bandwidth with a comb tooth value greater than 1. Figure 15 illustrates this using a second comb tooth value of 4 as an example. The second control information occupies one RB every four RBs. Two adjacent RBs (e.g., RB#21 and RB#25) within the RBs occupied by the second control information are discontinuous within the second bandwidth and are separated by three RBs. For example, the second frequency domain resource is RB#20, RB#21, and RB#28. The network device transmits the second control information on RB#20, RB#21, and RB#28. The remaining RBs in the second bandwidth, excluding RB#20, RB#21, and RB#28, may not transmit information or signals. The network device can allocate more or all of the power value P1 of the second bandwidth configuration to RB#20, RB#21, and RB#28 to increase the power value of the second control information (or the power value of the second control information). For example, the power value of one of the RBs RB#20, RB#21, and RB#28 can be (P1 / 4); or, for example, the power value of one of the RBs RB#20, RB#21, and RB#28 can be a value smaller than (P1 / 4) but larger than (P1 / 13), where " / " can mean division.

[0318] Figure 16 illustrates an example where the second frequency domain resource includes multiple (e.g., three) frequency domain units. In the example of Figure 16, some resources in the second frequency domain resource can be discontinuous resources in the second bandwidth, and some resources can be continuous resources in the second bandwidth. As shown in Figure 16, the second frequency domain resources are RB#23, RB#26, and RB#27. RB#23 and RB#26 are discontinuous resources in the second bandwidth, while RB#26 and RB7 are continuous resources in the second bandwidth. The description of the power values ​​of the frequency in Figure 16 can be found in the description of at least one of Figures 13, 14, or 15, and will not be repeated here.

[0319] As can be seen from the schemes in Figures 15 and 16, the distribution of the second frequency domain resources within the second bandwidth is quite flexible. For example, the total bandwidth occupied by the second control information can be the second bandwidth, or it can be something other than the second bandwidth. However, since the frequency domain resources occupied by the second control information are only a portion of the resources within the second bandwidth, the network device can concentrate the power value of the second bandwidth onto a portion of the second bandwidth, thereby increasing the power value of that portion of the bandwidth and thus improving the performance of the second control information transmitted on that portion of the bandwidth.

[0320] If we continue with the definitions of the first and second transmission methods described above, for example, the second control information can be transmitted using the first transmission method. Similarly, the aforementioned first control information can also be transmitted using the first transmission method. For instance, the first control information, the second control information, and the first message can all be transmitted using narrowband or fewer frequency domain resource units.

[0321] For example, the power value of the first transmission method is less than or equal to the power value of the second transmission method. For example, when the second control information is transmitted using the first transmission method, the actual bandwidth occupied by the second control information is, for example, bandwidth #1, and the power value of the second control information is power value #1. When the second control information is transmitted using the second transmission method, the actual bandwidth occupied by the second control information is, for example, bandwidth #2, and the power value of the second control information is power value #2. Power value #1 is less than or equal to power value #2.

[0322] Figure 17 is a schematic diagram of another possible information transmission method provided by an embodiment of this application. Figure 17 also exemplarily illustrates another possible schematic diagram of a second frequency domain resource mapping method. For example, the second bandwidth includes two CCEs, namely CCE#0 and CCE#1. One CCE includes 6 resource element groups (REGs), containing 72 resource elements (REs). One REG includes 3 REs carrying DMRS and 9 REs carrying data. One CCE has 54 (6*9=54) REs that can be used to transmit bits in the second control information. With quadrature phase shift keying (QPSK) modulation, 54 REs can transmit 108 bits.

[0323] As shown in Figure 17(a), CCE#0 and CCE#1 are time-division multiplexed, with one CCE occupying one symbol. If the second control information is transmitted using the second transmission method, the second control information needs to be transmitted on both CCE#0 and CCE#1, occupying resources in both CCEs. If the scheme provided in this application is applied, for example, the second control information is transmitted using the first transmission method, or the second control information uses only the resources of one CCE. As shown in Figure 17(a), the second control information only occupies resources in CCE#0 and not in CCE#1. On each symbol, the frequency domain resources not used for transmitting the second control information can be left empty, without transmitting other information. The network device can allocate more power on that symbol to the frequency domain resources used for transmitting the second control information, thereby increasing the power value of the second control information.

[0324] As shown in Figure 17(b), CCE#0 and CCE#1 are frequency-division multiplexed, with both CCEs occupying the same symbol. If the second control information is transmitted using the second transmission method, the second control information needs to be transmitted at full bandwidth on both CCE#0 and CCE#1, occupying resources in both CCEs. If the scheme provided in this application is applied, for example, the second control information is transmitted using the first transmission method, or the second control information uses only the resources of one CCE. As shown in Figure 17(b), the second control information only occupies resources in CCE#0 and not in CCE#1. On each symbol, frequency domain resources not used for transmitting the second control information can be left empty, without transmitting other information. The network device can allocate more power on that symbol to the frequency domain resources used for transmitting the second control information, thereby increasing the power value of the second control information.

[0325] In another possible implementation, when the second control information is mapped to resources in a CCE, it can be mapped with a comb tooth value greater than 1. This reduces the amount of frequency domain resources occupied by the second control information, allowing the network device to increase the power value on the frequency domain resources occupied by the second control information. As shown in Figure 17(b), the resources in the REG occupied by the second control information may not occupy all the resources in the REG, but only a portion of them. Similarly, in Figure 17(a), the resources in the REG occupied by the second control information may also not occupy all the resources in the REG, but only a portion of them.

[0326] In another possible implementation, the second control information may occupy the bandwidth of two CCEs, specifically a portion of the bandwidth of the two CCEs. For example, the second control information may be mapped to the two CCEs with a comb tooth value greater than 1. This reduces the amount of frequency domain resources occupied by the second control information, allowing the network device to increase the power value on the frequency domain resources occupied by the second control information.

[0327] In another possible implementation, the terminal device may acquire information that assists it in receiving the second control information. For example, the terminal device may receive at least one of the following information D1, D2, D3, or D4.

[0328] Information D1 is used to indicate the number of frequency domain units in the second frequency domain resource.

[0329] For example, information used to indicate the number of frequency domain units in the second frequency domain resource may include / be replaced with information used to indicate the bandwidth size of the second frequency domain resource.

[0330] Information D2 is used to indicate the location of the second frequency domain resource in the second bandwidth.

[0331] For example, information used to indicate the location of a second frequency domain resource in a second bandwidth may include: a frequency offset value used to indicate the frequency offset of a frequency domain cell (e.g., a frequency domain cell at the starting position in the frequency domain) within the second bandwidth of the second frequency domain resource.

[0332] The resources in the second frequency domain may be a continuous segment of resources within the second bandwidth, or they may be discontinuous resources within the second bandwidth. For example, if the second control information is mapped using comb teeth, the second frequency domain resources are frequency domain resources that appear at equal intervals within the second bandwidth. In this case, the information used to indicate the position of the second frequency domain resources within the second bandwidth may further include information used to indicate the comb tooth value corresponding to the second control information. In the embodiments of this application, the comb tooth value corresponding to the second control information may also be referred to as the comb tooth value corresponding to the second frequency domain resource. The relevant content regarding the comb tooth value is described above and will not be repeated here.

[0333] Referring to Figure 13, for example, the second frequency domain resource includes one RB. Information D2 indicates that the frequency offset of the RB in the second frequency domain resource within the second bandwidth is 4 RBs. Based on this information, the terminal device can determine that within the second bandwidth, the second frequency domain resource is the RB located 4 RBs away from the starting position of the second bandwidth, that is, the 5th RB (RB#25) is the RB in the second frequency domain resource.

[0334] Referring to Figure 14, for example, the second frequency domain resource includes multiple RBs. Information D2 indicates that the frequency offset of the starting RB in the second frequency domain resource within the second bandwidth is 4 RBs. Based on this information, the terminal device can determine that within the second bandwidth, the second frequency domain resource is an RB 4 RBs away from the starting position of the second bandwidth, i.e., the 5th RB (RB#25) is the starting RB in the second frequency domain resource. The terminal device determines that the bandwidth of the second frequency domain resource is 4 RBs, and can determine that the second frequency domain resource is a continuous segment of frequency domain resources within the second bandwidth. Therefore, the terminal device can determine that the second frequency domain resource includes RB#25, RB#26, RB#27, and RB#28.

[0335] Referring to Figure 15, for example, the second frequency domain resource includes multiple RBs. Information D2 indicates that the frequency offset of the starting RB in the second frequency domain resource within the second bandwidth is 0 RBs. Based on this information, the terminal device can determine that within the second bandwidth, the first RB (RB#21) at the starting position of the second frequency domain resource is the starting RB. The information indicating the position of the second frequency domain resource within the second bandwidth also indicates that the corresponding comb tooth value of the second frequency domain resource is 4. Therefore, the terminal device can determine that two adjacent frequency domain resources in the second frequency domain resource are two frequency domain resources separated by 3 RBs in the second bandwidth. Consequently, the terminal device determines that the second frequency domain resource includes RB#21, RB#25, RB#26, and RB#213.

[0336] Information D3 is used to indicate the power value corresponding to the second frequency domain resource.

[0337] The network device can use the power value corresponding to the second frequency domain resource to transmit second control information on the second frequency domain resource. Information used to indicate the power value corresponding to the second frequency domain resource can improve the success rate of receiving the second control information.

[0338] Information D4 is used to indicate the time-domain resources occupied by the second control information.

[0339] The terminal device can receive the second control information more quickly based on the information used to indicate the time domain resources occupied by the second control information.

[0340] In addition to the four types of information shown above, the terminal device can also obtain other information to assist the terminal device in receiving the second control information, thereby improving the success rate of the terminal device in receiving the second control information.

[0341] In this embodiment, multiple pieces of information (e.g., any of information D1, D2, D3, or D4) sent by the network device to the terminal device can be carried in the same message or in different messages. For example, at least one of information D1, D2, D3, or D4 can be carried in at least one of a system message, a MIB, or a user public message. This increases the probability that the terminal device will successfully receive these messages. Furthermore, carrying these messages in at least one of a system message, a MIB, or a user public message reduces the amount of data the terminal device needs to receive in scenarios with strong signal interference, and also increases the probability that the terminal device will successfully receive the second configuration information. For example, the network device uses a second transmission method to send the second configuration information. Correspondingly, the terminal device uses the second transmission method to receive the second configuration information.

[0342] In another possible implementation, at least one of information D1, information D2, information D3, or information D4 can be indicated implicitly, thereby reducing the amount of information to be transmitted and lowering resource consumption.

[0343] For example, network devices implicitly indicate information used to indicate the location of second frequency domain resources in the second bandwidth.

[0344] The information implicitly indicated by the network device does not require additional configuration through other signaling, thus saving signaling overhead.

[0345] For example, the location of the second frequency domain resource in the second bandwidth is associated with the cell transmitting the second control information. Thus, the terminal device can determine the location of the second frequency domain resource in the second bandwidth based on the cell transmitting the second control information. For instance, the network device and the terminal device can respectively obtain the association between the cell transmitting the second control information and the location of the second frequency domain resource in the second bandwidth. This association can also be replaced by a correspondence relationship, which can be negotiated, pre-set, or set by the network device and then sent to the terminal device. In this way, the terminal device can find the location of the second frequency domain resource associated with the cell transmitting the second control information in the second bandwidth based on this association. In this scheme, the network device no longer needs to send other information indicating the location of the second frequency domain resource in the second bandwidth, thereby reducing signaling overhead.

[0346] For example, the position of the second frequency domain resource in the second bandwidth is associated with the beam footprint for transmitting the second control information. Alternatively, the position of the second frequency domain resource in the second bandwidth can also be associated with the frequency domain position of the SSB; similar schemes are described above and will not be repeated here.

[0347] In another possible implementation, other cells may also be transmitting control information for scheduling messages of the same type as the first message. For example, if the first message is an alarm message, other cells, or other beams within the same cell, may also be sending control information for scheduling other alarm messages (e.g., the second message). In one possible implementation, when control information is being transmitted on different beams within the same cell, the frequency domain positions of these control messages may differ and / or the amount of frequency domain resources they occupy may differ. In another possible implementation, when control information is being transmitted on different beams within different cells, the frequency domain positions of these control messages may differ and / or the amount of frequency domain resources they occupy may differ. In yet another possible implementation, when control information is being transmitted on the same beam within different cells, the frequency domain positions of these control messages may differ and / or the amount of frequency domain resources they occupy may differ. This can reduce interference between beams and / or cells, improve the signal reception quality of the terminal device (e.g., signal reception SNR), and enhance detection performance.

[0348] In this application embodiment, there are multiple ways to carry the first message and the second control information. Several possible implementation methods are exemplified below through implementation methods E1, E2, and E3. For example, the first message can be carried on a first data channel (e.g., PDSCH). In implementation method E1, the second control information is also carried on the first data channel as an example. In implementation method E2, the time domain resources occupied by the second control information can belong to the time domain resources occupied by the first data channel. In implementation method E3, the second control information is carried on a control channel as an example.

[0349] In implementation method E1, the second control information is carried on the first data channel.

[0350] In implementation E1, the network device can transmit the second control information as a payload on the first data channel.

[0351] The second control information can be continuously mapped to the resources of the first data channel, or the second control channel can be mapped to the resources of the first data channel with a comb tooth value greater than 1. The first message can be continuously mapped to the resources of the first data channel, or the first message can be mapped to the resources of the first data channel with a comb tooth value greater than 1. This reduces the amount of resources occupied by the second control information and the first message, thereby reducing resource overhead. In scenarios with weak signals, the transmission performance of these two pieces of information can be improved because the overhead of transmitting the second control information and the first message is reduced.

[0352] For example, the information about the resources occupied by the second control information (e.g., the time slot position occupied by the second control information (e.g., the position of the time domain resources occupied by the second control information in the first data channel), the number of frequency domain units, or the frequency domain position, etc.) can be indicated by the second configuration information (e.g., system messages or MIB, etc.). For relevant schemes, please refer to the foregoing description and will not be repeated here.

[0353] For example, the network device may not indicate the information about the resources occupied by the second control information; for instance, the network device may not indicate the frequency domain location occupied by the second control information. In this case, the terminal device may perform blind detection sequentially on the bandwidth of the first data channel, according to the number of frequency domain units occupied by the configured second control information, on the time domain resource (e.g., a time slot) occupied by the first data channel.

[0354] In another possible implementation, the second control information can be scrambled using the RNTI associated with the first message. This allows the second control information to be distinguished from other control information not used for scheduling alarm messages. Alternatively, the second control information can be in a specified DCI format, or it can include indications that it is used for scheduling alarm messages.

[0355] In another possible implementation, after the second control information is channel-coded, it is mapped onto a portion of the resources of the first data channel. Then, when the first data channel performs resource mapping, the network device can perform rate matching on resources other than those occupied by the second control information. For example, when the second control information is mapped, the network device can relinquish resources occupied by the DMRS in the first data channel. For instance, the second control information may not occupy the symbol containing the DMRS in the first data channel. Alternatively, the second control information may occupy the symbol in the very middle, or the leftmost or rightmost symbol of the first data channel. Furthermore, the time-domain resources occupied by the second control information may differ from those occupied by the first message (or the first data channel).

[0356] In another possible implementation, the first message is rate-matched on the first frequency domain resource within the first time domain resource. For example, if some resources in the PDSCH carrying the first message are occupied by the second control information, the first message can be transmitted on the PDSCH resources excluding the second control information, and rate matching of the first message can be performed accordingly.

[0357] In another possible implementation, the modulation scheme used by the second control information, the DMRS pattern of the first data channel carrying the second control information, and the antenna port occupied by the second control information can all share the same set of parameters as the first message. Since the second control information can be carried on the first data channel, the second control information and the first message can share the PDSCH parameters (such as DMRS, antenna port, etc.), thereby improving configuration flexibility and saving signaling overhead.

[0358] In another possible implementation, the second control information is not mapped to the resources occupied by the demodulation reference signal in the data channel (e.g., PDSCH). This reduces interference to the first data channel.

[0359] In implementation E1, the second control information can be transmitted as data carried in the first data channel. For example, the first data channel may include a first frequency domain resource and a second frequency domain resource, and may include a first message and second control information. The network device sends the first message on the first frequency domain resource and sends the second control information on the second frequency domain resource. Related details are as described above and will not be repeated here.

[0360] Figure 18 is a schematic diagram of another possible information transmission method provided by an embodiment of this application. As shown in Figure 18, the network device can transmit multiple data channels, which may include control information. Taking PDSCH#2 in Figure 18 as the first data channel as an example, the second control information is carried on PDSCH#2. As can be seen from Figure 18, the frequency domain resources occupied by the first message and the second control information are part of the resources in the first bandwidth. Therefore, the network device can increase the power value of the frequency domain resources occupied by the first message and the second control information, thereby improving the signal transmission performance. The relevant schemes are described above and will not be repeated here.

[0361] For example, network devices can also transmit information via a second transmission method, such as control information. To distinguish this, in this embodiment, the control information transmitted by the network device using the second transmission method is referred to as conventional DCI. Figure 18 illustrates this using the first bandwidth occupied by conventional DCI as an example. It can be seen that, compared to conventional DCI, this embodiment transmits the second control information using fewer frequency domain resources, thereby increasing the power value of the frequency domain resources occupied by the second control information, and thus improving signal transmission performance. The relevant solutions are described above and will not be repeated here.

[0362] For example, the first data channel occupies one time slot and one PRB. The second control information has 26 bits (e.g., including a 16-bit CRC). For example, for QPSK modulation, the code rate when the first data channel carries DCI within one PRB is approximately 0.098. This code rate can support network devices to transmit the second control information in a highly reliable manner, thereby improving the success rate of terminal devices receiving the second control information in scenarios with strong interference. In the embodiments of this application, the second control information can use a 16-bit CRC, or it can use a CRC of other bits, such as a 24-bit CRC.

[0363] Since the network device can carry the second control information as "data" in the first control channel, it can reduce the standardization work and use various flexible parameter configuration methods when transmitting data through the first data channel, thus giving the network full scheduling flexibility.

[0364] In implementation E2, the time-domain resources occupied by the second control information may belong to the time-domain resources occupied by the first data channel.

[0365] Implementation E2 provides a possible example in which the resources occupied by the second control information and the resources occupied by the first message can be distinguished. For example, the first data channel occupies first time-domain resources, and the time-domain resources occupied by the second control information belong to the first time-domain resources. At least one frequency-domain unit in the first frequency-domain resources is different from at least one frequency-domain unit in the second frequency-domain resources. Another example is that the second control information and the first message can be transmitted using frequency division multiplexing. Yet another example is that the second control information and the first message are mapped together to the time slot resources of the first data channel. These implementations provide a possible solution for the resource allocation method of the first control information and the first message.

[0366] In another possible implementation, the second control information is not mapped to the resources occupied by the demodulation reference signal in the data channel (e.g., PDSCH). This reduces interference to the first data channel.

[0367] In implementation E2, the second control information can also be carried on the first data channel. The relevant content of this implementation can be found in the description of implementation E1. Similarly, the scheme for rate matching of the second control information and / or the first message by the network device in implementation E2 can also be found in the description of implementation E1. That is, the contents of implementation E2 and implementation E1 can be referred to interchangeably, and will not be repeated here.

[0368] In one possible implementation, the second control information occupies at least one CCE, and one of the CCEs occupies more than three symbols. Since one CCE of the second control information occupies more time-domain symbols, the amount of frequency-domain resources occupied by the second control information can be reduced; that is, the second control information can occupy fewer frequency-domain resources per symbol. Consequently, on a single symbol, the network device can allocate more power values ​​to the frequency-domain resources occupied by the second control information, thereby increasing the power value corresponding to the frequency-domain resources occupied by the second control information and thus improving the transmission performance of the second control information.

[0369] Figure 19 is a schematic diagram of another possible information transmission method provided by an embodiment of this application. Taking PDSCH#2 in Figure 19 as the first data channel as an example, it can be seen from Figure 19 that the second control information occupies the time domain resources of the first data channel. The frequency domain resources occupied by the first message and the second control information are part of the resources in the first bandwidth, so the network device can increase the power value on the frequency domain resources occupied by the first message and the second control information, thereby improving the signal transmission performance. For related solutions, please refer to the foregoing description, which will not be repeated here. For example, the network device can also transmit some information through a second transmission method, such as traditional DCI. For related content, please refer to the description of Figure 18, which will not be repeated here.

[0370] Figure 20 is a schematic diagram of another possible information transmission method provided by an embodiment of this application. Taking PDSCH#2 in Figure 20 as the first data channel as an example, it can be seen from Figure 20 that the second control information occupies CCE#0 of the first data channel. CCE#0 occupies 6 symbols in the time domain and one PRB in the frequency domain. The second control information occupies part of the time domain resources of PDSCH#2. The second frequency domain resources occupied by the second control information belong to part of the frequency domain resources occupied by the first data channel.

[0371] Figure 21 is a schematic diagram of another possible information transmission method provided by an embodiment of this application. Taking PDSCH#2 in Figure 21 as the first data channel as an example, it can be seen from Figure 21 that the second control information occupies CCE#0 of the first data channel. CCE#0 occupies 6 symbols in the time domain and one PRB in the frequency domain. The second control information occupies part of the time domain resources of PDSCH#2. The second frequency domain resources occupied by the second control information are the same as the frequency domain resources occupied by the first data channel.

[0372] The above content exemplifies several distribution methods of resources occupied by the second control information. The resources occupied by the second control information can be resources at any position among the resources occupied by the first data channel. Several examples are provided in the embodiments of this application.

[0373] Since the time-domain resources occupied by the second control information can belong to the time-domain resources occupied by the first data channel, this scheme can reduce latency. Furthermore, since the second control information can be carried on the first data channel, the second control information and the first message can share parameters such as DMRS and antenna port of the PDSCH, allowing for more flexible configuration.

[0374] In implementation method E3, the second control information is carried on the control channel.

[0375] The relationship between the resources occupied by the control channel and the first data channel can be flexibly configured.

[0376] For example, the control channel and the first data channel are mapped onto the bandwidth in a continuous manner in the frequency domain.

[0377] For example, the time-frequency resource mapping method for the control channel is similar to that for the first data channel. For instance, the network device can map the control channel to a symbol in a time slot (e.g., to a symbol originally allocated to the first data channel), and still transmit the PDCCH according to the resource combination of CCE and REG. This method requires minimal modification to the PDCCH; only the resource mapping of REG to symbols in the time slot needs to be adjusted. This approach reduces the complexity of subsequent standardization work and also reduces the complexity of the solution itself.

[0378] For example, at least one frequency domain element in the first frequency domain resource is the same as at least one frequency domain element in the second frequency domain resource. For example, the control channel occupies the bandwidth occupied by the data channel in one time slot. For example, the bandwidth occupied by the control channel is the same as the bandwidth occupied by the first data channel. For example, the frequency domain resources occupied by the control channel are the same as those occupied by the first data channel. For example, the bandwidth occupied by the first message is the same as the bandwidth occupied by the second control information. For example, the frequency domain resources occupied by the first message are the same as those occupied by the second control information. For example, the second bandwidth can be the bandwidth configured for the PDCCH, and the frequency domain resources in the second bandwidth other than those occupied by the PDCCH may not be mapped to signals and / or messages. In this way, the network device can increase the power value on the frequency domain resources occupied by the PDCCH, thereby increasing the success rate of the terminal device receiving the second control information.

[0379] For example, the second control information and the first data channel occupy different time-domain resources. For example, the second control information and the first message can be transmitted using time-division multiplexing.

[0380] In one possible implementation, the second control information may occupy one or more CCEs. A single CCE may occupy 6 time-domain units (e.g., symbols) and 1 frequency-domain unit (e.g., RB). This allows the second control information to occupy fewer frequency-domain units, enabling the network device to allocate more power to the second control information in a single time-domain unit, thereby improving the transmission performance of the second control information.

[0381] Figure 22 is a schematic diagram of another possible information transmission method provided by an embodiment of this application. In Figure 22, the second control information is carried on the PDCCH, and the first message is carried on the PDSCH. The PDCCH can be used to schedule the PDSCH, for example, and the second control information can be used to schedule the first message. As can be seen from Figure 20, the second control information and the first message can occupy different time-domain resources. The frequency-domain resources occupied by the PDSCH are the same as those occupied by the PDCCH, or the bandwidth range of the frequency-domain resources occupied by the first control information is the same as that of the frequency-domain resources occupied by the first message, or the frequency-domain resources occupied by the first control information are the same as those occupied by the first message. Figure 22 illustrates an example where the first bandwidth and the second bandwidth are the same, but the first bandwidth and the second bandwidth can also be different. For example, the frequency-domain resources occupied by the first message and the second control information are part of the resources in the first bandwidth, thereby allowing the network device to increase the power value on the frequency-domain resources occupied by the first message and the second control information, thereby improving signal transmission performance. Related solutions are described above and will not be repeated here. For another example, the network device can also transmit some information through a second transmission method, such as traditional DCI. In one possible implementation, the first data channel can occupy all the symbols in a time slot, or it can occupy the remaining symbols excluding the first 1 to 3 symbols occupied by traditional DCI. See Figure 18 for a related description, which will not be repeated here.

[0382] Figure 23 is a schematic diagram of another possible information transmission method provided by an embodiment of this application. Taking the PDCCH in Figure 23 as a control channel carrying second control information as an example, the PDCCH includes, for example, two CCEs, and one CCE includes six REGs. For a PDCCH that includes one PRB and 12 symbols, Figure 23 exemplarily shows a schematic diagram of a possible distribution of CCEs in the PDCCH. As can be seen from Figure 23, the second control information occupies CCE#0 of the control channel. CCE#0 occupies one PRB in the frequency domain and six symbols in the time domain. The second frequency domain resources occupied by the second control information belong to a portion of the frequency domain resources occupied by the first data channel. It can be seen that one RB can support a maximum of two CCEs, thereby supporting the terminal device to use one or two CCEs to transmit the PDCCH. At this time, there are three types of blind detection of the PDCCH by the terminal device: CCE0, CCE0, and CCE0&CCE1.

[0383] Similarly, Figures 24 and 25 are schematic diagrams of several possible information transmission methods provided in the embodiments of this application. The PDCCH in Figures 24 and 25 is an example of a control channel carrying second control information. For example, the PDCCH includes 4 CCEs, and one CCE includes 6 REGs. For a PDCCH including two PRBs and 12 symbols, Figures 24 and 25 respectively exemplify schematic diagrams of several possible distribution methods of CCEs in the PDCCH. As can be seen from Figure 24, the second control information occupies CCE#0 and CCF#1 of the control channel. The second control information occupies two PRBs in the frequency domain and 6 symbols in the time domain. As can be seen from Figure 25, the second control information occupies CCE#0 and CCF#1 of the control channel. The second control information occupies one PRB in the frequency domain and 12 symbols in the time domain. The method shown in Figure 24 can improve the transmission delay of the PDCCH. The method shown in Figure 25 can improve the time diversity gain of the PDCCH.

[0384] In one possible implementation, the second control information can perform rate matching on the resources actually occupied by the second control information, so as to map the corresponding information bits and the channel-coded modulation symbols to the corresponding physical resources.

[0385] Based on the same concept, Figures 26 and 27 are schematic diagrams of possible communication devices provided in embodiments of this application. These communication devices can be used to implement the functions of the network device (or the first communication device) or the terminal device (or the second communication device) in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiments of this application, the communication device may be a terminal device, a chip (system) inside a terminal device, a network device, or a chip (system) inside a network device as shown in Figures 4A, 4B, 4C, or 5. The communication device may also be a terminal device, a chip (system) inside a terminal device, a ground station, a chip (system) inside a ground station, a satellite, or a chip (system) inside a satellite as shown in Figures 4A, 4B, 4C, or 5.

[0386] As shown in Figure 26, the communication device 1300 includes a processing unit 1310 and a transceiver unit 1320. The communication device 1300 is used to implement the functions of the first device in the method embodiments shown in Figure 6 or Figure 11. The transceiver unit 1320 can also be referred to as a communication unit. The transceiver unit 1320 may include a sending unit and a receiving unit.

[0387] When the communication device 1300 is used to implement the function of the network device (or the first communication device) in the method embodiment shown in FIG6, in one possible implementation, the transceiver unit 1320 is used to: send a first message.

[0388] When the communication device 1300 is used to implement the function of the network device (or the first communication device) in the method embodiment shown in FIG6, in one possible implementation, the transceiver unit 1320 is used to: send first configuration information.

[0389] When the communication device 1300 is used to implement the function of the network device (or the first communication device) in the method embodiment shown in FIG6, in one possible implementation, the transceiver unit 1320 is used to: send first control information.

[0390] When the communication device 1300 is used to implement the function of the network device (or the first communication device) in the method embodiment shown in FIG6, in one possible implementation, the transceiver unit 1320 is used to: send information for indicating the power value corresponding to the first frequency domain resource and / or information for indicating the time domain resource occupied by the first message.

[0391] When the communication device 1300 is used to implement the function of the network device (or the first communication device) in the method embodiment shown in FIG11, in one possible implementation, the transceiver unit 1320 is used to: send second control information.

[0392] When the communication device 1300 is used to implement the function of the network device (or the first communication device) in the method embodiment shown in FIG11, in one possible implementation, the transceiver unit 1320 is used to: send second configuration information.

[0393] When the communication device 1300 is used to implement the functions of the terminal device (or the second communication device) in the method embodiment shown in FIG6, in one possible implementation, the transceiver unit 1320 is used to: receive a first message.

[0394] When the communication device 1300 is used to implement the functions of the terminal device (or the second communication device) in the method embodiment shown in FIG6, in one possible implementation, the transceiver unit 1320 is used to: receive first configuration information.

[0395] When the communication device 1300 is used to implement the functions of the terminal device (or the second communication device) in the method embodiment shown in FIG6, in one possible implementation, the transceiver unit 1320 is used to: receive first control information.

[0396] When the communication device 1300 is used to implement the functions of the terminal device (or the second communication device) in the method embodiment shown in FIG6, in one possible implementation, the transceiver unit 1320 is used to: receive information for indicating the power value corresponding to the first frequency domain resource and / or information for indicating the time domain resource occupied by the first message.

[0397] When the communication device 1300 is used to implement the functions of the terminal device (or the second communication device) in the method embodiment shown in FIG11, in one possible implementation, the transceiver unit 1320 is used to: receive second control information.

[0398] When the communication device 1300 is used to implement the functions of the terminal device (or the second communication device) in the method embodiment shown in FIG11, in one possible implementation, the transceiver unit 1320 is used to: receive second configuration information.

[0399] For a more detailed description of the processing unit 1310 and the transceiver unit 1320, please refer to the relevant descriptions in the method embodiments shown in Figure 6 or Figure 11.

[0400] As shown in Figure 27, the communication device 1400 includes a processor 1410 and an interface circuit 1420. The processor 1410 and the interface circuit 1420 are coupled to each other. It is understood that the interface circuit 1420 can be a transceiver or an input / output interface. The transceiver includes a transmitter and a receiver; the transmitter can be used to send information, and the receiver can be used to receive information. Other functions can be implemented by the processor. The input / output interface is used to input and / or output information; output can be understood as sending, and input can be understood as receiving. Other functions can be implemented by the processor. Optionally, the communication device 1400 may also include a memory 1430 for storing instructions executed by the processor 1410, or storing input data required by the processor 1410 to execute instructions, or storing data generated after the processor 1410 executes instructions.

[0401] When the communication device 1400 is used to implement the method shown in FIG6 or FIG11, the processor 1410 is used to implement the function of the processing unit 1310, and the interface circuit 1420 is used to implement the function of the transceiver unit 1320.

[0402] When the aforementioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal device in the above method embodiments. The terminal chip receives information from the base station, which can be understood as the information being first received by other modules in the terminal (such as an RF module or antenna), and then sent to the terminal chip by these modules. The terminal chip sends information to the base station, which can be understood as the information being first sent to other modules in the terminal (such as an RF module or antenna), and then sent to the base station by these modules.

[0403] When the aforementioned communication device is a chip applied to a base station, the base station chip implements the functions of the network device in the above method embodiments. The base station chip receives information from the terminal, which can be understood as the information being first received by other modules in the base station (such as an RF module or antenna), and then sent to the base station chip by these modules. The base station chip sends information to the terminal, which can be understood as the information being sent down to other modules in the base station (such as an RF module or antenna), and then sent to the terminal by these modules.

[0404] Based on the same concept, embodiments of this application provide a system, which includes a network device and a terminal device.

[0405] Based on the same concept, embodiments of this application provide a chip system, which includes at least one processor and an interface circuit. The interface circuit and at least one processor are interconnected by a line. The processor executes any of the possible implementations in FIG6 or FIG11 by running a computer program (also referred to as code or instructions).

[0406] Based on the same concept, this application provides a computer program product, which includes a computer program (also referred to as code or instructions) that, when run, causes a computer to perform any of the possible implementations shown in FIG6 or FIG11.

[0407] Based on the same concept, embodiments of this application provide a computer-readable storage medium storing a computer program (also referred to as code or instructions) that, when run on a computer, causes the computer to perform any of the possible implementations shown in FIG6 or FIG11.

[0408] In this application, entity A sends information to entity B, either directly or indirectly through other entities. Similarly, entity B receives information from entity A, either directly or indirectly through other entities. Entities A and B can be RAN nodes or terminals, or modules within RAN nodes or terminals. Information transmission and reception can be between RAN nodes and terminals, such as between a base station and a terminal; between two RAN nodes, such as between a CU and a DU; or between different modules within a single device, such as between a terminal chip and other modules of the terminal, or between a base station chip and other modules of the base station.

[0409] It is understood that the processor in the embodiments of this application can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor.

[0410] The method steps in the embodiments of this application can be implemented in hardware or in software instructions executable by a processor. The software instructions can consist of corresponding software modules, which can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, portable hard disks, compact disc read-only memory (CD-ROM), or any other form of storage medium well known in the art. An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. The storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Alternatively, the ASIC can reside in a base station or terminal. The processor and storage medium can also exist as discrete components in a base station or terminal.

[0411] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer programs or instructions. When a computer program or instruction is loaded and executed on a computer, all or part of the processes or functions of the embodiments of this application are performed. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, a computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.

[0412] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0413] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates an "or" relationship between the preceding and following related objects; in the formulas of this application, the character " / " indicates a "division" relationship between the preceding and following related objects. "Including at least one of A, B, or C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B, and C.

[0414] It is understood that the various numbers involved in the embodiments of this application (such as the numerical numbers "first" and "second", and the letter numbers "A1, A2", "B1, B2", "C1, C2", etc.) are only for the convenience of description and are not intended to limit the scope of the embodiments of this application. The order of the above-mentioned process numbers does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that, The method is applicable to network devices, and the method includes: In the event that the terminal device misses receiving a signal and / or a message, a first message is transmitted in the first frequency domain resource; Wherein, the first frequency domain resource is a portion of the resources in the first bandwidth, and the power value corresponding to a frequency domain unit in the first frequency domain resource is greater than the first power value. The first power value is the power value of a frequency domain unit determined based on the power value of the first bandwidth and the number of frequency domain units in the first bandwidth.

2. The method as described in claim 1, characterized in that, In the first frequency domain resource, at least two adjacent frequency domain units are non-contiguous frequency domain resources in the first bandwidth; or, In the first frequency domain resource, at least two adjacent frequency domain units are consecutive frequency domain resources in the first bandwidth.

3. The method according to any one of claims 1-2, characterized in that, The first bandwidth is: the bandwidth of a carrier, or the bandwidth of a partial bandwidth BWP, or the bandwidth configured in the cell.

4. The method according to any one of claims 1-3, characterized in that, Frequency domain resources in the first bandwidth other than the first frequency domain resources do not map information and / or do not map signals.

5. The method according to any one of claims 1-4, characterized in that, The terminal device's failure to receive signals and / or messages includes at least one of the following: The terminal device has missed receiving information; The terminal device has missed calls; The terminal device was paged but was not paged; The terminal device failed to perform time-frequency synchronization; The terminal device failed to successfully connect to the network; or... The received signal quality of the terminal device is less than or not greater than the signal quality threshold.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: Send the first configuration information; The first configuration information includes: information indicating the location of the first frequency domain resource in the first bandwidth, and / or information indicating the number of frequency domain units in the first frequency domain resource.

7. The method as described in claim 6, characterized in that, The first configuration information is carried in at least one of the following: system message, system information block (MIB), or user public message.

8. The method according to any one of claims 1-5, characterized in that, The method further includes: Send the first control message; The first control information includes: information indicating the location of the first frequency domain resource in the first bandwidth, and / or information indicating the number of frequency domain units in the first frequency domain resource.

9. The method according to any one of claims 1-5, characterized in that, The location of the first frequency domain resource within the first bandwidth is associated with the cell that sent the first message; and / or, The position of the first frequency domain resource in the first bandwidth is associated with the beam footprint of the first message.

10. The method according to any one of claims 1-9, characterized in that, The method further includes: Send information indicating the power value corresponding to the first frequency domain resource and / or information indicating the time domain resource occupied by the first message.

11. The method according to any one of claims 6-10, characterized in that, The information indicating the power value corresponding to the first frequency domain resource is carried in at least one of a system message, a MIB, or a user public message; and / or, The information used to indicate the time-domain resources occupied by the first message is carried in at least one of system messages, MIBs, or user public messages.

12. The method according to any one of claims 1-11, characterized in that, The method further includes: The second control information is transmitted in the second frequency domain resource, which is a portion of the resources in the second bandwidth. The power value corresponding to a frequency domain unit in the second frequency domain resource is greater than the second power value, which is the power value of a frequency domain unit determined based on the power value of the second bandwidth and the number of frequency domain units in the second bandwidth.

13. The method as described in claim 12, characterized in that, In the second frequency domain resource, at least two adjacent frequency domain units are discontinuous frequency domain resources in the second bandwidth; or, In the second frequency domain resource, at least two adjacent frequency domain units are consecutive frequency domain resources in the second bandwidth.

14. The method according to any one of claims 12-13, characterized in that, The second bandwidth is: the bandwidth of a carrier, or the bandwidth of a partial bandwidth BWP, or the bandwidth configured in the cell.

15. The method according to any one of claims 12-14, characterized in that, In the second bandwidth, frequency domain resources other than the second frequency domain resources do not map information and / or do not map signals.

16. The method according to any one of claims 12-15, characterized in that, The method further includes: Send second configuration information, which includes at least one of the following: Information used to indicate the location of the second frequency domain resource within the second bandwidth; Information used to indicate the bandwidth size of the second frequency domain resource; Information used to indicate the power value corresponding to the second frequency domain resource; or, Information used to indicate the time-domain resources occupied by the second control information.

17. The method as described in claim 16, characterized in that, The second configuration information is carried in at least one of the following: system message, system information block (MIB), or user public message.

18. The method according to any one of claims 12-17, characterized in that, The first message is carried on the first data channel, and the second control information is carried on the first data channel.

19. The method according to any one of claims 12-18, characterized in that, The first message is carried on a first data channel, the first data channel occupies a first time domain resource, and the time domain resource occupied by the second control information belongs to the first time domain resource; At least one frequency domain cell in the first frequency domain resource is different from at least one frequency domain cell in the second frequency domain resource.

20. The method according to any one of claims 12-17, characterized in that, The first message is carried on the first data channel, and the second control information occupies different time domain resources than the first data channel; At least one frequency domain cell in the first frequency domain resource is the same as at least one frequency domain cell in the second frequency domain resource.

21. The method according to any one of claims 12-20, characterized in that, The second control information occupies at least one control channel element (CCE), and one of the at least one CCE occupies more than 3 symbols.

22. A communication method, characterized in that, The method is applicable to terminal devices, and the method includes: The first message is received in the first frequency domain resource. Wherein, the first frequency domain resource is a portion of the resources in the first bandwidth, and the power value corresponding to a frequency domain unit in the first frequency domain resource is greater than the first power value. The first power value is the power value of a frequency domain unit determined based on the power value of the first bandwidth and the number of frequency domain units in the first bandwidth.

23. The method as described in claim 22, characterized in that, In the first frequency domain resource, at least two adjacent frequency domain units are non-contiguous frequency domain resources in the first bandwidth; or, In the first frequency domain resource, at least two adjacent frequency domain units are consecutive frequency domain resources in the first bandwidth.

24. The method according to any one of claims 22-23, characterized in that, The first bandwidth is: the bandwidth of a carrier, or the bandwidth of a partial bandwidth BWP, or the bandwidth configured in the cell.

25. The method according to any one of claims 22-24, characterized in that, The step of receiving the first message in the first frequency domain resource includes: In the event that the terminal device misses receiving a signal and / or a message, the first message is received in the first frequency domain resource. Wherein, the terminal device misses signals and / or messages, including at least one of the following: The terminal device has missed receiving information; The terminal device has missed calls; The terminal device was paged but was not paged; The terminal device failed to perform time-frequency synchronization; The terminal device failed to successfully connect to the network; or... The signal quality corresponding to the signal from the terminal device is less than the signal quality threshold.

26. The method according to any one of claims 22-25, characterized in that, The method further includes: Receive the first configuration information; The first configuration information includes: information indicating the location of the first frequency domain resource in the first bandwidth, and / or information indicating the number of frequency domain units in the first frequency domain resource.

27. A communication device, characterized in that, It includes modules for performing the method as described in any one of claims 1 to 21, or modules for performing the method as described in any one of claims 22 to 26.

28. A communication device, characterized in that, Includes a processor that, through logic circuitry or by executing computer programs or instructions, implements the method as described in any one of claims 1 to 21, or implements the method as described in any one of claims 22 to 26.

29. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions, which, when executed by a communication device, implement the method as described in any one of claims 1 to 21, or the method as described in any one of claims 22 to 26.

30. A computer program product, characterized in that, The computer program product stores a computer program, the computer program including program instructions, which, when executed by a computer, cause the computer to perform the method as described in any one of claims 1 to 21, or to perform the method as described in any one of claims 22 to 26.

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