Communication method and device

Abstract

The present application provides a communication method and apparatus, the method comprising: a network device sending a first signaling and a second signaling, the first signaling comprising first indication information for indicating a first frequency domain resource and a first MCS, the first frequency domain resource comprising a second frequency domain resource; the second signaling comprising second indication information for indicating the second frequency domain resource and a second MCS; a terminal device determining, based on the first signaling and the second signaling, to receive a first downlink signal on the first frequency domain resource within a first time period, wherein the MCS corresponding to the portion of the first downlink signal carried on the second frequency domain resource is the second MCS, and the MCS corresponding to the portion of the first downlink signal carried on the third frequency domain resource is the first MCS or a third MCS, and the third MCS is determined based on the first MCS. Multiple MCS configurations for a single transport block are achieved through at least one signaling.

Description

Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a method and apparatus for communications. Background Art

[0002] In current New Radio Access Technology (NR) systems, wireless signals transmitted by the transmitter propagate through multiple paths, including reflection, refraction, and scattering. Signals along different paths arrive at the receiver at different times, resulting in distortion of the received signal compared to the signal sent by the transmitter. This distortion is caused by the fluctuations in the frequency domain of the channel coefficients of the wireless channel through which the signal propagates. This is known as frequency-selective fading, a characteristic of the wireless channel. This frequency-selective fading depends on the environment and is typically less pronounced in environments with few obstructions or potential reflectors. Fixed Wireless Access (FWA) networks based on Long Term Evolution (LTE) and NR technologies, particularly in indoor FWA scenarios, experience significant frequency-selective fading due to the numerous obstacles and severe multipath effects.

[0003] Wireless communication systems use frequency-selective scheduling to overcome the frequency-selective fading characteristics of wireless channels. That is, resource blocks (RBs) with better channel quality are scheduled for communication between network devices and terminal devices, thereby achieving frequency-selective channel gain.

[0004] In the prior art, a single transmission block corresponding to a resource block scheduled by a network device corresponds to only one modulation and coding scheme (MCS), which cannot match the frequency selective fading characteristics of the wireless channel, resulting in reduced transmission performance. Summary of the Invention

[0005] The present application provides a communication method and apparatus, which implement multiple MCS configurations for a single transport block through at least one signaling.

[0006] A first aspect provides a communication method, which includes: receiving a first signaling, the first signaling including first indication information for indicating a first frequency domain resource and a first modulation and coding strategy MCS; receiving a second signaling, the second signaling including second indication information for indicating the second frequency domain resource and a second MCS, the first frequency domain resource including the second frequency domain resource; determining, based on the first signaling and the second signaling, to receive a first downlink signal on the first frequency domain resource within a first time period, wherein the MCS corresponding to the portion of the first downlink signal carried on the second frequency domain resource is the second MCS, and the MCS corresponding to the portion of the first downlink signal carried on the third frequency domain resource is the first MCS or a third MCS, the third frequency domain resource is a frequency domain resource in the first frequency domain resource that does not include the second frequency domain resource, and the third MCS is determined based on the first MCS.

[0007] Based on the above technical solution, three frequency domain resources and at least two MCSs are indicated through two-level signaling, thereby realizing multi-MCS configuration for a single transmission block. Moreover, since the second frequency domain resource is part of the first frequency domain resource, the field size indicating the second frequency domain resource in the second signaling is reduced, and the saved field can be used to indicate the third MCS.

[0008] In combination with the first aspect, in certain implementations of the first aspect, the third MCS is determined based on the first MCS and a first MCS offset value, and the first MCS offset value is carried in the second signaling.

[0009] Based on the above technical solution, three frequency domain resources and three MCSs are indicated through two-level signaling, which saves signaling overhead and reduces the complexity and power consumption of terminal equipment in detecting frequency domain resources and MCS indication information.

[0010] Based on the above technical solution, the first MCS offset value is directly indicated by the second signaling, and the third MCS is directly determined according to the relationship between the first MCS offset value and the first MCS, thereby realizing multi-MCS configuration for a single transmission block.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the first signaling is used to indicate the reception of a second downlink signal within a second time period, and the second signaling also includes third indication information for indicating the first time period; wherein the second time period includes the first time period, and the signal carried by the second downlink signal within the first time period is the first downlink signal.

[0012] In combination with the first aspect, in some implementations of the first aspect, the second signaling is used to indicate that the first downlink signal is received within a first time period.

[0013] In combination with the first aspect, in some implementations of the first aspect, the first signaling further includes fourth indication information for indicating a second time period, and the second time period includes the first time period.

[0014] With reference to the first aspect, in certain implementations of the first aspect, the first signaling is carried in a physical downlink shared channel PDSCH, and the second signaling is carried in a physical downlink control channel PDCCH.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the first signaling and the second signaling are both carried in a PDCCH.

[0016] In combination with the first aspect, in some implementations of the first aspect, the first signaling and the second signaling are the same signaling.

[0017] The second aspect provides a communication method, which includes: sending a first signaling, the first signaling including first indication information for indicating a first frequency domain resource and a first MCS; sending a second signaling, the second signaling including second indication information for indicating the second frequency domain resource and the second MCS, wherein the first frequency domain resource includes the second frequency domain resource, the second MCS is the MCS corresponding to the part of the first downlink signal carried on the second frequency domain resource, the MCS corresponding to the part of the first downlink signal carried on the third frequency domain resource is the first MCS or the third MCS, the third frequency domain resource is a frequency domain resource in the first frequency domain resource that does not include the second frequency domain resource, and the third MCS is determined based on the first MCS.

[0018] Based on the above technical solution, three frequency domain resources and at least two MCSs are indicated through two-level signaling, thereby realizing multi-MCS configuration for a single transmission block. Moreover, since the second frequency domain resource is part of the first frequency domain resource, the field size indicating the second frequency domain resource in the second signaling is reduced, and the saved field can be used for the third MCS indication.

[0019] In combination with the second aspect, in certain implementations of the second aspect, the third MCS is determined based on the first MCS and a first MCS offset value, and the first MCS offset value is carried in the second signaling.

[0020] Based on the above technical solution, three frequency domain resources and three MCSs are indicated through two-level signaling, which saves signaling overhead and reduces the complexity and power consumption of terminal equipment in detecting frequency domain resources and MCS indication information.

[0021] Based on the above technical solution, the first MCS offset value is directly indicated by the second signaling, and the third MCS is directly determined according to the relationship between the first MCS offset value and the first MCS, thereby realizing multi-MCS configuration for a single transmission block.

[0022] In combination with the second aspect, in certain implementations of the second aspect, the first signaling is used to indicate the reception of a second downlink signal within a second time period, and the second signaling also includes third indication information for indicating the first time period; wherein the second time period includes the first time period, and the signal carried by the second downlink signal within the first time period is the first downlink signal.

[0023] In combination with the second aspect, in some implementations of the second aspect, the second signaling is used to indicate that the first downlink signal is received within a first time period.

[0024] In combination with the second aspect, in some implementations of the second aspect, the first signaling further includes fourth indication information for indicating a second time period, where the second time period includes the first time period.

[0025] In combination with the second aspect, in certain implementations of the second aspect, the first signaling is carried in the PDSCH, and the second signaling is carried in the PDCCH.

[0026] In combination with the second aspect, in certain implementations of the second aspect, the first signaling and the second signaling are carried in a PDCCH.

[0027] In combination with the second aspect, in some implementations of the second aspect, the first signaling and the second signaling are the same signaling.

[0028] The third aspect provides a communication device, which is a terminal device or a module configured in (or used for) a terminal device, including: a transceiver unit and a processing unit, the transceiver unit is used to receive a first signaling and a second signaling, the first signaling including a first indication information for indicating a first frequency domain resource and a first modulation and coding strategy MCS, the first frequency domain resource including a second frequency domain resource; the second signaling including a second indication information for indicating the second frequency domain resource and a second MCS; the processing unit is used to determine, based on the first signaling and the second signaling, to receive a first downlink signal on the first frequency domain resource within a first time period, wherein the MCS corresponding to the part of the first downlink signal carried on the second frequency domain resource is the second MCS, and the MCS corresponding to the part of the first downlink signal carried on the third frequency domain resource is the first MCS or the third MCS, the third frequency domain resource is a frequency domain resource in the first frequency domain resource that does not include the second frequency domain resource, and the third MCS is determined based on the first MCS.

[0029] Based on the above technical solution, the terminal device determines three frequency domain resources and at least two MCSs by receiving two-level signaling, thereby realizing multiple MCS configurations for a single transmission block.

[0030] The fourth aspect provides a communication device, which is a network device or a module configured in (or used for) a network device, including: a transceiver unit, which is used to send a first signaling and a second signaling, the first signaling including first indication information for indicating a first frequency domain resource and a first MCS, the first frequency domain resource including a second frequency domain resource; the second signaling including second indication information for indicating the second frequency domain resource and a second MCS, wherein the second MCS is the MCS corresponding to the part of the first downlink signal carried on the second frequency domain resource, the MCS corresponding to the part of the first downlink signal carried on the third frequency domain resource is the first MCS or the third MCS, the third frequency domain resource is a frequency domain resource in the first frequency domain resource that does not include the second frequency domain resource, and the third MCS is determined based on the first MCS.

[0031] Based on the above technical solution, the network device indicates three frequency domain resources and at least two MCSs by sending two-level signaling, thereby realizing multi-MCS configuration for a single transmission block. Moreover, since the second frequency domain resource is part of the first frequency domain resource, the field size indicating the second frequency domain resource in the second signaling is reduced, and the saved field can be used for the third MCS indication.

[0032] In a fifth aspect, a communication device is provided, which may be the terminal device described in the first aspect, or an electronic device configured in the terminal device, or a larger device including the terminal device. The device is configured to execute the communication method provided in the first aspect. The communication device includes a transceiver and a processor, the transceiver being configured to receive first signaling and second signaling, the first signaling including first indication information indicating a first frequency domain resource and a first modulation and coding strategy (MCS), the first frequency domain resource including a second frequency domain resource; the second signaling including second indication information indicating the second frequency domain resource and a second MCS; the processor being configured to determine, based on the first signaling and the second signaling, whether to receive a first downlink signal on the first frequency domain resource within a first time period, wherein the MCS corresponding to the portion of the first downlink signal carried on the second frequency domain resource is the second MCS, and the MCS corresponding to the portion of the first downlink signal carried on the third frequency domain resource is the first MCS or a third MCS, the third frequency domain resource being a frequency domain resource in the first frequency domain resource that does not include the second frequency domain resource, and the third MCS being determined based on the first MCS. The processor is coupled to the memory and can be used to execute instructions in the memory to implement the communication method in the first aspect and any possible implementation of the first aspect. Optionally, the communication device also includes a memory. Optionally, the communication device also includes a communication interface, and the processor is coupled to the communication interface.

[0033] In one implementation, the communication interface may be a transceiver, or an input / output interface.

[0034] In another implementation, the communication device is a chip configured in a terminal device. When the communication device is a chip configured in a terminal device, 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 embodied as a processing circuit or a logic circuit.

[0035] In a sixth aspect, a communications device is provided. The communications device may be the network device described in the second aspect, or an electronic device configured in the network device, or a larger device including the network device. The device is configured to perform the communications method described in the second aspect. The communications device includes a transceiver configured to transmit first signaling and second signaling, the first signaling including first indication information indicating a first frequency domain resource and a first MCS, the first frequency domain resource including a second frequency domain resource; the second signaling including second indication information indicating the second frequency domain resource and a second MCS, wherein the second MCS is the MCS corresponding to the portion of the first downlink signal carried on the second frequency domain resource, the MCS corresponding to the portion of the first downlink signal carried on the third frequency domain resource is the first MCS or a third MCS, the third frequency domain resource being a frequency domain resource of the first frequency domain resource excluding the second frequency domain resource, and the third MCS being determined based on the first MCS. The processor is coupled to a memory and configured to execute instructions in the memory to implement the communications method described in the second aspect and any possible implementation of the second aspect. Optionally, the communications device also includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

[0036] In one implementation, the communication interface may be a transceiver, or an input / output interface.

[0037] In another implementation, the communication device is a chip configured in a network device. When the communication device is a chip configured in the network device, 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 embodied as a processing circuit or a logic circuit.

[0038] Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0039] In a specific implementation, the processor may be one or more chips, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a trigger, or various logic circuits. The input signal received by the input circuit may be, but is not limited to, received and input by a receiver, and the signal output by the output circuit may be, but is not limited to, output to and transmitted by a transmitter. The input circuit and the output circuit may be the same circuit, which functions as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation of the processor and various circuits.

[0040] In a seventh aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a terminal device, the terminal device implements the communication method in the first aspect and any possible implementation method of the first aspect.

[0041] In an eighth aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a network device, the network device implements the communication method in the second aspect and any possible implementation method of the second aspect.

[0042] In a ninth aspect, a computer program product comprising instructions is provided, which, when executed by a computer, enables a terminal device to implement the communication method in the first aspect and any possible implementation manner of the first aspect.

[0043] In a tenth aspect, a computer program product comprising instructions is provided, which, when executed by a computer, enables a network device to implement the communication method in the second aspect and any possible implementation manner of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 Schematic diagram of a communication system applicable to an embodiment of the present application.

[0045] Figure 2 A schematic flowchart of a communication method applicable to an embodiment of the present application.

[0046] Figure 3 A schematic diagram of a frequency domain resource relationship applicable to an embodiment of the present application.

[0047] Figure 4 A schematic diagram of a received signal applicable to an embodiment of the present application.

[0048] Figure 5 This is a schematic block diagram of a terminal device apparatus suitable for use in an embodiment of the present application.

[0049] Figure 6The present invention provides a schematic structural diagram of a network device suitable for use in an embodiment of the present application.

[0050] Figure 7 This is a schematic diagram of the architecture of a terminal device suitable for use in an embodiment of the present application.

[0051] Figure 8 The present invention provides a schematic diagram of the network architecture of a network device suitable for use in an embodiment of the present application. DETAILED DESCRIPTION

[0052] The technical solution in this application will be described below with reference to the accompanying drawings.

[0053] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System for Mobile Communications (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, satellite communication system, fifth generation (5G) system or New Radio (NR), and future communication systems.

[0054] Figure 1 FIG. 1 is a schematic diagram of a wireless communication system 100 applicable to an embodiment of the present application.

[0055] like Figure 1 As shown, the wireless communication system 100 may include at least one network device, such as Figure 1 The wireless communication system 100 may also include at least one terminal device, such as Figure 1The terminal device 120 shown in FIG. A wireless connection can be established between the terminal device and the network device, or between the terminal devices, for wireless communication. The sending device can indicate data scheduling information through control information so that the receiving device can correctly receive the data according to the control information.

[0056] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, indoor or outdoor customer premises equipment (CPE), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved public land mobile communication network (PLMN), etc.

[0057] It should be understood that this application does not limit the specific form of the terminal device.

[0058] The network device in the embodiment of the present application can be any device with wireless transceiver function. The device includes but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (for example, Home evolved NodeB, or HomeNode B, HNB), Base Band Unit (BBU), Access Point (AP) in Wireless Fidelity (WIFI) system, wireless relay node, wireless backhaul node, Transmission Point (TP) or Transmission and Reception Point (TRP), etc. It can also be 5G, such as gNB in ​​NR system, or transmission point (TRP or TP), one or a group of antenna panels (including multiple antenna panels) of a base station in 5G system, or it can also be a network node constituting a gNB or transmission point, such as a Base Band Unit (BBU) or a Distributed Unit (DU), and it can also be a base station in a future mobile communication system or an access node in a Wi-Fi system, etc.

[0059] In some deployments, a gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU). The CU implements some gNB functions, while the DU implements some gNB functions. For example, the CU is responsible for processing non-real-time protocols and services, implementing Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP) layer functions. The DU is responsible for processing physical layer protocols and real-time services, implementing Radio Link Control (RLC), Media Access Control (MAC), and physical layer functions. The AAU implements some physical layer processing functions, RF processing, and active antenna-related functions. Because RRC layer information ultimately becomes PHY layer information, or is converted from PHY layer information, in this architecture, higher-layer signaling, such as RRC layer signaling, can be considered to be sent by the DU, or by a combination of the DU and the AAU. It is understood that a network device can be one or more of a CU node, a DU node, or an AAU node. In addition, the CU may be classified as a network device in the Radio Access Network (RAN), or as a network device in the Core Network (CN), which is not limited in this application.

[0060] To facilitate understanding of the embodiments of the present application, several terms involved in the present application are briefly introduced below.

[0061] 1. Subcarrier

[0062] Subcarrier: In an Orthogonal Frequency Division Multiplexing (OFDM) system, frequency domain resources are divided into several sub-resources. Each sub-resource in the frequency domain is called a subcarrier. A subcarrier can also be understood as the minimum granularity of frequency domain resources.

[0063] 2. Subcarrier spacing

[0064] Subcarrier spacing: In an OFDM system, the spacing between the center or peak positions of two adjacent subcarriers in the frequency domain. For example, the subcarrier spacing in an LTE system is 15 kHz, while the subcarrier spacing in a 5G NR system can be 15 kHz, 30 kHz, 60 kHz, or 120 kHz.

[0065] 3. OFDM Symbol

[0066] OFDM symbol: The smallest time unit in the time domain in an OFDM system, which is a communication system using OFDM transmission, such as LTE or NR system.

[0067] 4. Demodulation Reference Signal (DMRS)

[0068] DMRS: Demodulation Reference Signal is a reference signal used to recover the received signal. DMRS is a signal known to the receiver. Based on the received signal and the known DMRS signal, the receiver can determine the fading characteristics of the wireless channel, that is, the channel coefficient of the wireless channel, to recover the received signal. In the 5G NR system, considering that the channel coefficients from different antenna ports to the terminal are not the same, in order for the receiver to obtain information transmitted on multiple spatial layers, it is necessary to estimate the channel coefficients between each antenna port and the terminal. Therefore, a different DMRS needs to be configured for each antenna port. The DMRS corresponding to different antenna ports can be multiplexed using time division, frequency division, and / or code division. Currently, the 5G NR system can support up to 12 DMRS ports.

[0069] 5. Resource Block (RB)

[0070] A resource block (RBG) is a collection of N consecutive subcarriers in the frequency domain. For example, a resource block in an LTE system contains 12 subcarriers, and a resource block in a 5G NR system also contains 12 subcarriers. As communication systems evolve, the number of subcarriers in a resource block can also be increased. Several resource blocks can be combined into a resource block group (RBG). The number of RBs contained in each RBG can be determined by the resource block bundling "PRBBundling" field in the DCI.

[0071] 6. Frequency domain resources

[0072] Frequency domain resources are a portion of the frequency band configured by a network device to a terminal device for data transmission. Specifically, frequency domain resources can be component carriers (CCs), bandwidth parts (BWPs), or carrier frequency bands. This is not limited in the present embodiment, and BWPs can be either continuous or discontinuous frequency domain resources.

[0073] 7. Slot

[0074] A slot is a unit of time for transmitting data. A slot typically contains multiple symbols / chips, each of which may have the same or different transmission directions. A 5G NR slot consists of 14 OFDM symbols. A 15 kHz subcarrier spacing corresponds to a slot length of 1 ms, while a 30 kHz subcarrier spacing corresponds to a slot length of 0.5 ms. An OFDM symbol is the smallest unit of time in the OFDM system.

[0075] 8. Transmit Block (TB)

[0076] Data is transmitted on uplink data channels (e.g., the physical uplink shared channel) and downlink data channels (e.g., the physical downlink shared channel) in transport blocks. The size of a TB can be expressed in bits using the Transmit Block Size (TBS). Currently, in 5G NR systems, a terminal device can simultaneously receive or send a maximum of two transport blocks.

[0077] 9. Modulation and Coding Scheme (MCS)

[0078] The MCS is the modulation and coding strategy corresponding to the modulation order and code rate used for the transport blocks contained in the downlink signal sent by the network device to the terminal device. The network device carries the MCS index value in the DCI and indicates the MCS table used by the terminal device through high-layer signaling. The terminal device determines the modulation and coding strategy to be used based on the MCS index value received in the DCI and the MCS table indicated by the high-layer signaling. Based on the determined modulation precoding strategy, it determines the modulation order and code rate to be used to process the downlink signal.

[0079] In the 5G NR system, when a network device transmits a data packet to a terminal device, the network device sends downlink control information (DCI) to the terminal user in the Physical Downlink Control Channel (PDCCH), instructing the terminal device to receive downlink data.

[0080] The DCI indicates the resource block used by the terminal device to receive the downlink signal through the "Frequency domain resource assignment indication" field.

[0081] The MCS index value indicated by the "Modulation and Code Scheme (MCS) indication" field and the MCS index table indicated by the higher-layer signaling indicate the corresponding MCS contained in the signal received by the terminal device from the above resource block.

[0082] In the aforementioned DCI, each transport block corresponds to only one MCS. This means that a single transport block corresponding to a resource block scheduled by the network device only has one MCS. This fails to accommodate the frequency-selective fading characteristics of the wireless channel. To overcome this issue, the network device must configure multiple MCSs corresponding to each transport block carried by the scheduled resource block and indicate to the terminal device the frequency domain resources corresponding to each MCS that carry part of the transport block.

[0083] In an embodiment of the present application, in order to solve the above problem, the network device configures multiple MCSs for a single transmission block by sending one or more signalings, thereby mitigating the frequency selective fading characteristics of the wireless channel.

[0084] Figure 2 A schematic flow chart of a communication method 200 provided in an embodiment of the present application is provided, the method comprising:

[0085] S210 The network device sends a first signaling to the terminal device. Correspondingly, the terminal device receives the first signaling, where the first signaling includes first indication information for indicating first frequency domain resources and a first MCS. The first frequency domain resources include second frequency domain resources.

[0086] It should be understood that before sending the first signaling, the network device can estimate the channel state based on uplink reference signals such as the channel sounding reference signal and / or the demodulation reference signal sent by the terminal device, and determine the scheduled frequency domain resources and the first MCS corresponding to the signal carried on the frequency domain resources based on the channel state, and then instruct the terminal device through the first signaling. The first frequency domain resource can be a resource block that carries the downlink signal to be sent by the network device to the terminal device.

[0087] In one embodiment, the first indication information includes two fields: a first field for indicating the first frequency domain resource, and a second field for indicating the index value of the first MCS. In other words, the field for indicating the first frequency domain resource and the field for indicating the index value of the first MCS are two different fields. The first field and / or the second field in the first indication information may be indication fields in existing protocols, reserved fields in existing protocols, or newly added fields not defined in existing protocols. For example, if the first signaling is DCI, the first field may be the "Frequency domain resource assignment" field in the DCI format defined in 3GPP (3rd Generation Partnership Project) TS 38.212. The second field may be the "Modulation and coding scheme" field in the DCI format defined in 3GPP TS 38.212. Alternatively, if the first signaling is RRC signaling, a field for indicating the first frequency domain resource and a field for indicating the first MCS may be added to the RRC signaling.

[0088] Optionally, the first signaling may further include fourth indication information for indicating the second time period. The fourth indication information may indicate the time slot offset and the start and length indicator value (SLIV) of the second time period. The SLIV is used to determine the first OFDM symbol and the last OFDM symbol in the second time period. The fourth indication information may be an indication field in an existing protocol, a reserved field in an existing protocol, or a newly added field not defined in an existing protocol. For example, if the first signaling is DCI, the fourth indication information may be a field in the existing DCI for indicating the time domain resource allocation "Time Domain Resource Assignment". If the first signaling is RRC signaling, a field for indicating the second time period may be added to the RRC signaling.

[0089] In one embodiment, the first signaling may be carried in a physical downlink shared channel (PDSCH). For example, the first signaling is an RRC signaling. Of course, the first signaling may also be other high-layer signaling besides RRC, which is not limited here.

[0090] In another embodiment, the first signaling may also be carried in a physical downlink control channel (PDCCH). For example, the first signaling is DCI. Of course, the first signaling may also be other signaling besides DCI, which is not limited here.

[0091] S220 The network device sends a second signaling, and correspondingly, the terminal device receives the second signaling, where the second signaling includes second indication information for indicating a second frequency domain resource and a second MCS, and the first frequency domain resource includes the second frequency domain resource.

[0092] Specifically, the second indication information includes two fields for indicating the second frequency domain resource and the second MCS, the first field is used to indicate the second frequency domain resource, and the second field is used to indicate the index value of the second MCS. The first field and / or the second field in the second indication information can be an indication field in an existing protocol, a reserved field in an existing protocol, or a newly added field not defined in an existing protocol. For example, if the second signaling is DCI, the first field can be the field of frequency domain resource allocation "Frequency domain resource assignment" in the DCI format defined in the protocol 3GPP (3rd Generation Partnership Project) TS 38.212. The second field can be the field of modulation and coding scheme "Modulation and coding scheme" in the DCI format defined in the protocol 3GPP TS38.212.

[0093] In one embodiment, the first field may indicate the second frequency domain resource in the form of a bitmap. The bit length of the bitmap may be the number of RBs included in the first frequency domain resource. Or the bit length of the bitmap may be the number of RBGs included in the first frequency domain resource, wherein each bit corresponds to an RB or an RBG, and different values ​​of each bit represent different states of the corresponding RB or RBG. For example, the value of the bit is set to 1, indicating that the resource block corresponding to this bit is included in the second frequency domain resource, and the value of the bit is set to 0, indicating that the resource block corresponding to this bit is not included in the second frequency domain resource. Similarly, if the value of the bit is set to 0, it indicates that the resource block corresponding to this bit is included in the second frequency domain resource, and if the value of the bit is set to 1, it indicates that the resource block corresponding to this bit is not included in the second frequency domain resource. This is not limited here.

[0094] For example, as shown in Table 1, if the first frequency domain resource includes 8 RBs, numbered RB0-RB7, if the bitmap is [11110000], it indicates that RB0, RB1, RB2, and RB3 are included in the second frequency domain resource; if the bitmap is [11101000], it indicates that RB0, RB1, RB2, and RB4 are included in the second frequency domain resource; if the bitmap is [11100100], it indicates that RB0, RB1, RB2, and RB5 are included in the second frequency domain resource; if the bitmap is [11111000], it indicates that RB0, RB1, RB2, RB3, and RB4 are included in the second frequency domain resource; if the bitmap is [11110100], it indicates that RB0, RB1, RB2, RB3, and RB5 are included in the second frequency domain resource.

[0095] Table 1

[0096]

[0097] In another embodiment, the first field may further indicate the second frequency domain resource through a resource indication value, where the resource indication value indicates the position of the starting RB of the second frequency domain resource and the number of consecutive RBs in the first frequency domain resource. For example, the resource indication information indicates that L consecutive RBs starting from the Sth RB in the first frequency domain resource belong to the second frequency domain resource. The resource indication value may be calculated using the resource indication value calculation method for Type 1 frequency domain resource allocation in the 3GPP TS 38.214 standard.

[0098] Specifically, in one embodiment, the second field indicates the index value of the second MCS and indicates the MCS index table adopted by the terminal device through high-layer signaling. The terminal device can determine the second MCS in the MCS index table indicated by the network device according to the index value of the second MCS.

[0099] In another embodiment, the second field may indicate an offset value. The offset value is the difference between the index value of the first MCS and the index value of the second MCS. The terminal device may determine the second MCS based on the offset value and the first MCS.

[0100] Optionally, the second signaling may further include third indication information for indicating that the first time period is included in the second time period. That is, the number of time slots included in the first time period is one, multiple, or all of the time slots included in the second time period, or the OFDM symbols included in the first time period are one, multiple, or all of the OFDM symbols included in the second time period.

[0101] Optionally, the second signaling also includes indication information for indicating the first MCS deviation value. Or the second signaling also includes indication information for indicating a third MCS. The first MCS deviation value is used to determine the index value of the third MCS. The first MCS deviation value is the difference between the index value of the third MCS and the index value of the first MCS. The third MCS is the MCS corresponding to the third frequency domain resource, that is, the MCS corresponding to the frequency domain resources in the first frequency domain resource except the second frequency domain resource. The third frequency domain resource is the complement of the second frequency domain resource in the first frequency domain resource.

[0102] It should be understood that when the first MCS deviation value indicated by the second signaling sent by the network device is zero, or the second signaling does not indicate the third MCS or the first MCS deviation value, the terminal device can determine that the MCS used by the signal carried on the third frequency domain resource is the first MCS indicated by the first signaling. Whether the specific network device needs to indicate the third MCS or the first MCS deviation amount through the second signaling is not limited here.

[0103] In one embodiment, the field for indicating the first MCS offset value in the second signaling may be located after the field for indicating the second frequency domain resources in the second signaling. Alternatively, the field for indicating the third MCS in the second signaling may be located after the field for indicating the second frequency domain resources in the second signaling.

[0104] It should be understood that if the second signaling indicates the second frequency domain resources by means of a bit map, the number of bits contained in the bit map is the same as the number of RBs or RBGs contained in the first frequency domain resource block. Because the number of RBs in the first frequency domain resources is less than the number of RBs contained in the bandwidth configured by the network device for the terminal device, or the number of RBGs in the first frequency domain resources is less than the number of RBGs contained in the bandwidth configured by the network device for the terminal device, the signaling overhead of the second signaling indicating the second frequency domain resources is reduced, and the network device can indicate the third MCS or the first MCS deviation value through one or more bits of the bits saved in this way.

[0105] In one implementation, the second signaling may be carried in the PDCCH. For example, the second signaling may be DCI, but is not limited thereto.

[0106] S230 The terminal device determines, based on the first signaling and the second signaling, that a first downlink signal is received on the first frequency domain resource within the first time period, wherein the MCS corresponding to the portion of the first downlink signal carried on the second frequency domain resource is the second MCS, and the MCS corresponding to the portion of the first downlink signal carried on the third frequency domain resource is the first MCS or the third MCS, the third frequency domain resource is a frequency domain resource in the first frequency domain resource that does not include the second frequency domain resource, and the third MCS is determined based on the first MCS.

[0107] The first downlink signal is a downlink signal sent by a network device carried on a first frequency domain resource to a terminal device during a first time period.

[0108] Specifically, the terminal device determines, based on the first signaling and the second signaling, to receive the first downlink signal on the first frequency domain resource within the first time period. The terminal device can determine, based on the first signaling and the second signaling, including:

[0109] The terminal device may determine the first frequency domain resource and the first MCS based on the first signaling. That is, the terminal device may determine the index value of the first frequency domain resource and the first MCS based on the first signaling.

[0110] Optionally, the terminal device may determine the second time period based on the first signaling. Specifically, the terminal device may determine the first OFDM symbol and the last OFDM symbol in the second time period based on the slot offset and SLIV in the first signaling. The second time period includes the first time period.

[0111] Optionally, the terminal device may determine the first time period based on the second signaling. The terminal device may determine the first OFDM symbol and the last OFDM symbol in the first time period based on the slot offset and SLIV in the second signaling.

[0112] The terminal device can determine the second MCS based on the second signaling. Specifically, the terminal device can determine the index value of the second MCS based on the second signaling, and determine the second MCS based on the MCS index table indicated by the high-level signaling. The modulation and coding strategy indicated by the second MCS is the modulation and coding strategy adopted by the first downlink signal carried on the second frequency domain resource in the first time period.

[0113] The terminal device can determine the second frequency domain resource and the third frequency domain resource based on the first signaling and the second signaling. The second frequency domain resource is included in the first frequency domain resource. The third frequency domain resource is a frequency domain resource in the first frequency domain resource that does not include the second frequency domain resource. In other words, the terminal device can determine the second frequency domain resource based on the second signaling. Since the third frequency domain resource is the complement of the second frequency domain resource in the first frequency domain resource, the terminal device can also determine the third frequency domain resource. Figure 3 As shown, the first frequency domain resource includes 20 RBs numbered RB0 to RB19, the second frequency domain resource includes RB0 to RB3 and RB14 to RB19, and the third frequency domain resource includes RB4 to RB13.

[0114] It should be understood that the number of resource blocks of the second frequency domain resources and the third frequency domain resources may be determined by the network device according to parameters reported by the terminal device or according to an uplink reference signal sent by the terminal device. Figure 3The number of resource blocks of the second frequency domain resources and the third frequency domain resources is only an example and is not limited here.

[0115] Optionally, the terminal device may determine the third MCS based on the first MCS. In other words, the terminal device may determine the third MCS based on the first signaling and / or the second signaling. Specifically, the terminal device may determine the first MCS offset value based on the second signaling, and the terminal device may determine the index value of the third MCS based on the index value of the first MCS and the first MCS offset value, and determine the third MCS using the MCS index table indicated by the higher-layer signaling.

[0116] In one embodiment, the terminal device may determine the first MCS deviation value by using the indication information indicating the first MCS deviation value in the received second signaling, thereby determining the third MCS. For example, when the MCS index value corresponding to the first MCS is 1 and the first deviation value MCS is 0, the third MCS index value is 1; when the first MCS deviation value is 1, the third MCS index value is I+1; when the first MCS deviation value is -1, the third MCS index value is I-1; when the first deviation value is 2, the third MCS index value is I+2; and when the first MCS deviation value is -2, the third MCS index value is I-2.

[0117] The terminal device can determine, based on the first signaling and the second signaling, that the MCS corresponding to the third frequency domain resource in the first time period is the first MCS or the third MCS.

[0118] The terminal device can determine, based on the second signaling, that the MCS corresponding to the second frequency domain resource in the first time period is the second MCS.

[0119] Optionally, the network device may schedule the terminal device to receive downlink signals in the following two ways:

[0120] The first possible way:

[0121] The first signaling schedules the terminal device to receive a downlink signal. Both the first signaling and the second signaling received by the terminal device may be carried in the PDCCH.

[0122] In one embodiment, the first signaling includes fourth indication information, indicating that the terminal device receives a downlink signal within a second time period, that is, the first signaling can schedule the terminal device to receive a downlink signal sent by the network device, and the downlink signal is a second downlink signal. The second downlink signal is a downlink signal carried on the first frequency domain resource within the second time period. The portion of the second downlink signal carried within the first time period is the first downlink signal, wherein the second time period includes the first time period. The terminal receives the downlink signal according to the first signaling and the second signaling, and the specific steps include:

[0123] S2311 The terminal device determines the first frequency domain resources and the first MCS according to the first signaling. The terminal device may also determine the second time period according to the first signaling.

[0124] S2312 The terminal device receives a second downlink signal carried on the first frequency domain resource within a second time period based on the first signaling.

[0125] S2313 The terminal device determines to receive a first downlink signal on the first frequency domain resource within a first time period based on the first signaling and the second signaling.

[0126] Specifically, within a first time period after the terminal device receives the first signaling and the second signaling, it receives the first downlink signal on the second frequency domain resource and the third frequency domain resource, and processes the portion of the first downlink signal carried on the second frequency domain resource through the modulation and coding strategy indicated by the second MCS, and processes the portion of the first downlink signal carried on the third frequency domain resource through the modulation and coding strategy indicated by the third MCS or the modulation and coding strategy indicated by the first MCS. It should be understood that when the first MCS deviation value indicated by the second signaling is 0 or the second signaling does not include indication information of the first MCS deviation value or the second signaling does not include indication information indicating the third MCS, the portion of the first downlink signal carried on the third frequency domain resource is still processed through the modulation and coding strategy indicated by the first MCS; when the first MCS deviation value indicated by the second signaling is not 0 or the second signaling includes indication information for indicating the third MCS, the terminal device processes the portion of the first downlink signal carried on the third frequency domain resource through the modulation and coding strategy indicated by the third MCS.

[0127] It should be understood that the order in which the above-mentioned terminal device receives partial signals on the second frequency domain resources and receives partial signals on the third frequency domain resources can be receiving partial signals on the third frequency domain resources first, or receiving partial signals on the second frequency domain resources first, or receiving them simultaneously, which is not limited here.

[0128] For example, Figure 4 As shown, the terminal device receives the first signaling and the second signaling in time slot i, the first signaling indicates that the second time period includes 20 time slots, namely, time slot i to time slot i+19, and the second signaling indicates that the first time period includes 5 time slots, namely, time slot i to time slot i+4. The terminal device receives part of the first downlink signal on the second frequency domain resource from time slot i to time slot i+4, and demodulates part of the signal according to the second MCS, and receives part of the first downlink signal on the third frequency domain resource, and demodulates part of the signal according to the first MCS or the third MCS; from time slot i+5 to time slot i+19, the terminal device receives the signal on the first frequency domain resource, and demodulates the signal according to the first MCS.

[0129] It should be understood that if the terminal device receives the first signaling and the second signaling in a certain time slot after the first time period has ended and the second time period has not ended, and the terminal device receives the second signaling again, the above steps after the terminal device receives the second signaling are repeated. If the terminal device receives the first signaling and the second signaling in a certain time slot after the first time period has ended and the second time period has not ended, and the terminal device does not receive the second signaling again, the terminal device receives the second downlink signal from the first frequency domain resource in the time period of the second time period excluding the first time period, and demodulates the second downlink signal according to the first MCS.

[0130] It should also be understood that if the terminal device only receives the first signaling and does not receive the second signaling, the terminal device determines the first frequency domain resources and the first MCS based on the first signaling, and then receives the second downlink signal from the first frequency domain resources within the second time period, and processes the second downlink signal according to the first MCS.

[0131] The first signaling and the second signaling can be the same information or different information. Taking DCI as an example, the first signaling and the second signaling can be the same DCI or different DCI, which is not limited here.

[0132] Second possible way:

[0133] The second signaling schedules the terminal device to receive a downlink signal. The first signaling received by the terminal device may be carried in the PDSCH, and the second signaling may be carried in the PDCCH.

[0134] Specifically, the second signaling schedules the terminal device to receive a downlink signal sent by the network device, where the downlink signal is a first downlink signal. The first downlink signal is a downlink signal carried on a first frequency domain resource within a first time period. That is, the second signaling instructs the terminal device to receive the first downlink signal.

[0135] Optionally, the first signaling further includes fourth indication information for indicating a second time period, where the second time period includes the first time period. It should be understood that the first signaling may not include the fourth indication information indicating the second time period, that is, when the first signaling includes the fourth indication information, the terminal device may determine the first frequency domain resources and the first MCS according to the first signaling within the second time period; when the first signaling does not include the fourth indication information, the terminal device may determine the first frequency domain resources and the first MCS according to the first signaling before receiving the next first signaling.

[0136] The terminal device receives the downlink signal according to the first signaling and the second signaling, and the specific steps are as follows:

[0137] S2321 The terminal device determines the first frequency domain resource and the first MCS according to the first signaling.

[0138] Optionally, the terminal device may also determine the second time period according to the first signaling. It should be understood that when the first signaling sent by the network device does not include fourth indication information for indicating the second time period, the terminal device may not perform this operation.

[0139] S2322 The terminal device determines to receive a first downlink signal on the first frequency domain resource within a first time period according to the first signaling and the second signaling. Specifically, the step of receiving the first downlink signal is the same as S2313 and is not described here in detail.

[0140] It should be understood that if the first signaling received by the terminal device is used to indicate the second time period in addition to indicating the first frequency domain resource and the first MCS, the terminal device does not receive downlink signals in the second time period except for the time in the first time period after determining to receive the first downlink signal on the first frequency domain resource within the first time period based on the first signaling information and the second signaling. In other words, when the terminal device only receives the first signaling, it does not receive the first downlink signal, but only needs to determine the first frequency domain resource and the first MCS.

[0141] The terminal device performs the operation of step S2322 only after receiving the second signaling.

[0142] Optionally, the first signaling may be RRC, and the second signaling may be on DCI, which is only an example and not a limitation.

[0143] It should be understood that if the first signaling is RRC, since the existing RRC signaling does not have fields indicating frequency domain resources and MCS index values, the fields indicating frequency domain resources and MCS index values ​​can be implemented by adding new fields in RRC.

[0144] Specifically, the network device indicates the index value of the first MCS according to the MCS indication field in the RRC, and indicates the MCS index table adopted by the terminal device through high-layer signaling. The terminal device can determine the first MCS in the MCS index table indicated by the network device according to the index value of the first MCS, and determine the second time period through the newly added field in the RRC signaling for indicating the second time period.

[0145] The solution of the above embodiment realizes the multi-MCS configuration of a single transmission block corresponding to the frequency domain resources scheduled by the network device by configuring the first signaling and the second signaling, thereby alleviating the frequency selective fading characteristics of the wireless channel.

[0146] It should be understood that the size of the serial numbers of the above processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0147] The above-mentioned communication method mainly introduces the solution provided by the embodiment of the present application from the perspective of interaction. It can be understood that, in order to implement the above-mentioned functions, each network element, such as a terminal device or a network device, includes a hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should be aware that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in a hardware or computer software-driven hardware manner depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0148] In the embodiment of the present application, the functional modules of the transmitting device or the receiving device can be divided according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation. The following is an example of dividing each functional module according to each function.

[0149] Above, combined Figures 1 to 4 And Table 1, detailed description of the method provided by the embodiment of the present application. Figures 5 to 7 The apparatus provided in the embodiments of the present application is described in detail. It should be understood that the description of the apparatus embodiment corresponds to the description of the method embodiment.

[0150] Figure 5 It is a schematic block diagram of a terminal device provided in an embodiment of the present application.

[0151] The terminal device 500 may correspond to the terminal device in the method 200 of the embodiment of the present application, and the terminal device 500 may include a Figure 2 The units of the method executed by the terminal device in the method 200. In addition, the units in the terminal device 500 and the above-mentioned other operations and / or functions are respectively for implementing Figure 2 The corresponding process of method 200 is shown in FIG.

[0152] like Figure 5As shown, the terminal device 500 may include a transceiver unit 510 and a processing unit 520. The transceiver unit 510 is configured to receive first signaling and second signaling, wherein the first signaling includes first indication information for indicating a first frequency domain resource and a first MCS, and the first frequency domain resource includes a second frequency domain resource; the second signaling includes second indication information for indicating the second frequency domain resource and a second MCS; the processing unit 520 is configured to determine, based on the first signaling and the second signaling, that a first downlink signal is received on the first frequency domain resource within a first time period, wherein the MCS corresponding to the portion of the first downlink signal carried on the second frequency domain resource is the second MCS, and the MCS corresponding to the portion of the first downlink signal carried on the third frequency domain resource is the first MCS or a third MCS, the third frequency domain resource is a frequency domain resource in the first frequency domain resource that does not include the second frequency domain resource, and the third MCS is determined based on the first MCS.

[0153] Optionally, the third MCS is determined based on the first MCS and a first MCS offset value, and the first MCS offset value is carried in the second signaling.

[0154] Optionally, the first signaling is also used to indicate the reception of a second downlink signal within a second time period, and the second signaling also includes third indication information for indicating the first time period; wherein the second time period includes the first time period, and the signal carried by the second downlink signal within the first time period is the first downlink signal.

[0155] Optionally, the first signaling further includes fourth indication information for indicating a second time period, where the second time period includes the first time period; and the second signaling is further used to indicate receiving the first downlink signal within the first time period.

[0156] Optionally, the first signaling is carried in PDSCH, and the second signaling is carried in PDCCH.

[0157] Optionally, the first signaling and the second signaling are both carried in the PDCCH.

[0158] It should also be understood that the transceiver unit 510 in the terminal device 500 may correspond to Figure 7 The transceiver 730 in the terminal device 700 shown in FIG. 5 , the processing unit 520 in the terminal device 500 may correspond to Figure 7 The processor 710 in the terminal device 700 is shown in FIG.

[0159] It should also be understood that the transceiver unit 510 in the terminal device 500 may be implemented via a communication interface (such as a transceiver or an input / output interface), for example, corresponding to Figure 7The transceiver 730 in the terminal device 700 shown in FIG, the processing unit 520 in the terminal device 500 may be implemented by at least one processor, for example, corresponding to Figure 7 The processor 710 in the terminal device 700 shown in FIG, the processing unit 520 in the terminal device 500 can also be implemented by at least one logic circuit.

[0160] Optionally, the terminal device 500 may further include a storage unit, which may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.

[0161] It should be understood that the beneficial effects of the above device can be found in the description of the above method embodiment, and for the sake of brevity, they will not be repeated here.

[0162] Figure 6 This is a schematic block diagram of a network device provided in an embodiment of the present application.

[0163] It should be understood that the network device 600 may correspond to the network device in the method 200 of the embodiment of the present application, and the network device 600 may include a Figure 2 The units of the method performed by the network device in the method 200 are respectively Figure 2 The corresponding process of method 200 in FIG.

[0164] like Figure 6 As shown, the network device 600 may include a transceiver unit 610 and a processing unit 620. The transceiver unit 610 is configured to send first signaling and second signaling, wherein the first signaling includes first indication information for indicating a first frequency domain resource and a first MCS, and the first frequency domain resource includes a second frequency domain resource; the second signaling includes second indication information for indicating the second frequency domain resource and a second MCS; the processing unit 620 is configured to determine, based on the first signaling and the second signaling, that a first downlink signal is received on the first frequency domain resource within a first time period, wherein the MCS corresponding to the portion of the first downlink signal carried on the second frequency domain resource is the second MCS, and the MCS corresponding to the portion of the first downlink signal carried on the third frequency domain resource is the first MCS or a third MCS, the third frequency domain resource is a frequency domain resource in the first frequency domain resource that does not include the second frequency domain resource, and the third MCS is determined based on the first MCS.

[0165] Optionally, the third MCS is determined based on the first MCS and a first MCS offset value, and the first MCS offset value is carried in the second signaling.

[0166] Optionally, the first signaling is also used to indicate the reception of a second downlink signal within a second time period, and the second signaling also includes third indication information for indicating the first time period; wherein the second time period includes the first time period, and the signal carried by the second downlink signal within the first time period is the first downlink signal.

[0167] Optionally, the first signaling further includes fourth indication information for indicating a second time period, where the second time period includes the first time period; and the second signaling is further used to indicate receiving the first downlink signal within the first time period.

[0168] Optionally, the first signaling is carried in PDSCH, and the second signaling is carried in PDCCH.

[0169] Optionally, the first signaling and the second signaling are carried in a PDCCH.

[0170] It should also be understood that the transceiver unit 610 in the network device 600 may correspond to Figure 8 The transceiver 830 in the network device 800 shown in FIG. 8 may correspond to the processing unit 620 in the network device 600. Figure 8 The processor 810 in the network device 800 is shown in FIG.

[0171] Optionally, the network device 600 may further include a storage unit, which may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.

[0172] It should also be understood that the transceiver unit 610 in the network device 600 can be implemented through a communication interface (such as a transceiver or an input / output interface), for example, corresponding to Figure 8 The transceiver 830 in the network device 800 shown in FIG. 8 , the processing unit 620 in the network device 600 may be implemented by at least one processor, for example, corresponding to Figure 8 The processor 810 in the network device 800 shown in FIG. 8 and the processing unit 620 in the network device 600 may be implemented by at least one logic circuit.

[0173] Figure 7 Schematic diagram of the structure of the terminal device 700 provided in the embodiment of the present application. The terminal device 700 can be applied to Figure 1In the system shown, the functions of the terminal device in the above-mentioned method embodiment are performed. As shown in the figure, the terminal device 700 includes a processor 710 and a transceiver 730. Optionally, the terminal device 700 also includes a memory 720. The processor 710, the transceiver 730, and the memory 720 can communicate with each other through an internal connection path to transmit control and / or data signals. The memory 720 is used to store computer programs, and the processor 710 is used to call and run the computer program from the memory 720 to control the transceiver 730 to send and receive signals. Optionally, the terminal device 700 may also include an antenna for transmitting the uplink data or uplink control signaling output by the transceiver 730 via wireless signals.

[0174] The processor 710 and the memory 720 can be combined into a processing device, and the processor 710 is used to execute the program code stored in the memory 720 to implement the above functions. In specific implementation, the memory 720 can also be integrated into the processor 710, or independent of the processor 710. The processor 710 can be combined with the memory 720 to form a processing device. Figure 5 The processing units in .

[0175] The transceiver 730 can be used with Figure 5 The transceiver 730 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). The receiver is used to receive signals, and the transmitter is used to transmit signals.

[0176] It should be understood that Figure 7 The terminal device 700 shown can implement Figure 2 The illustrated method embodiments involve various processes of the terminal device. The operations and / or functions of the various modules in the terminal device 700 are respectively for implementing the corresponding processes in the above method embodiments. For details, please refer to the description of the above method embodiments. To avoid repetition, detailed description is appropriately omitted here.

[0177] The processor 710 can be used to execute the actions implemented within the terminal device described in the previous method embodiments, while the transceiver 730 can be used to execute the actions of the terminal device sending to or receiving from the network device described in the previous method embodiments. For details, please refer to the description of the previous method embodiments and will not be repeated here.

[0178] Optionally, the terminal device 700 may further include a power supply for providing power to various devices or circuits in the terminal device.

[0179] Figure 8 Schematic diagram of the structure of the network device 800 provided in the embodiment of the present application. The network device 800 can be applied to Figure 1In the system shown, the functions of the network device in the above-mentioned method embodiment are performed. As shown in the figure, the network device 800 includes a processor 810 and a transceiver 830. Optionally, the network device 800 also includes a memory 820. The processor 810, the transceiver 830, and the memory 820 can communicate with each other through internal connection paths to transmit control and / or data signals. The memory 820 is used to store computer programs, and the processor 810 is used to call and execute the computer programs from the memory 820 to control the transceiver 830 to transmit and receive signals. Optionally, the network device 800 may also include an antenna for transmitting downlink data or downlink control signaling output by the transceiver 830 via wireless signals.

[0180] The processor 810 and the memory 820 can be combined into a processing device, and the processor 810 is used to execute the program code stored in the memory 820 to implement the above functions. In specific implementation, the memory 820 can also be integrated into the processor 810, or independent of the processor 810. The processor 810 can be combined with the memory 820 to form a processing device. Figure 6 The processing units in .

[0181] The transceiver 830 can be used with Figure 6 The transceiver 830 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). The receiver is used to receive signals, and the transmitter is used to transmit signals.

[0182] It should be understood that Figure 8 The network device 800 shown is capable of implementing Figure 2 The illustrated method embodiment involves various processes of the network device. The operations and / or functions of the various modules in the network device 800 are respectively for implementing the corresponding processes in the above method embodiment. For details, please refer to the description of the above method embodiment. To avoid repetition, detailed description is appropriately omitted here.

[0183] The processor 810 can be used to execute the actions implemented within the network device described in the previous method embodiments, while the transceiver 830 can be used to execute the actions of the network device sending to or receiving from the terminal device described in the previous method embodiments. For details, please refer to the description of the previous method embodiments and will not be repeated here.

[0184] Optionally, the network device 800 may further include a power supply for providing power to various devices or circuits in the network device.

[0185] It should be understood that Figure 8The illustrated network device 800 is only one possible architecture of a network device and does not constitute any limitation to this application. The methods provided in this application are applicable to network devices of other architectures, such as network devices including CUs, DUs, and AAUs. This application does not limit the specific architecture of the network device.

[0186] An embodiment of the present application further provides a processing device, including a processor and an interface; the processor is used to execute the method in any of the above method embodiments.

[0187] It should be understood that the processing device may be one or more chips. For example, the processing device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or other integrated chips.

[0188] During implementation, each step of the above method can be completed by an integrated logic circuit of the hardware in the processor or by instructions in the form of software. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor. The software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it will not be described in detail here.

[0189] It should be noted that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above-described method embodiments can be completed by hardware integrated logic circuits in the processor or by software instructions. The above-described processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software modules can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above-described method.

[0190] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0191] According to the method provided in the embodiment of the present application, the present application also provides a computer program product, which includes: a computer program code, which, when executed on a computer, causes the computer to execute Figure 2 The method in the embodiment shown.

[0192] According to the method provided in the embodiment of the present application, the present application also provides a computer-readable medium, which stores a program code, and when the program code is run on a computer, the computer executes Figure 2 The method in the embodiment shown.

[0193] According to the method provided in the embodiment of the present application, the present application also provides a system, which includes one or more terminal devices and one or more network devices as mentioned above.

[0194] The network devices in the aforementioned apparatus embodiments correspond exactly to the network devices or terminal devices in the terminal devices and method embodiments. The corresponding modules or units perform the corresponding steps. For example, the communication unit (transceiver) performs the receiving or sending steps in the method embodiments, while all other steps besides sending and receiving may be performed by the processing unit (processor). The functions of the specific units can be found in the corresponding method embodiments. There may be one or more processors.

[0195] As used in this specification, the terms "component," "module," "system," and the like are used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside in a process and / or an execution thread, and a component can be located on a single computer and / or distributed across two or more computers. In addition, these components can be executed from various computer-readable media having various data structures stored thereon. Components can communicate, for example, via local and / or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component on a local system, a distributed system, and / or a network, such as the Internet interacting with other systems via signals).

[0196] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0197] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the unit is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0198] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0199] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0200] In the above embodiments, the functions of each functional unit can be implemented in whole or in part through software, hardware, firmware, or any combination thereof. When implemented using software, they can be implemented in whole or in part in the form of a computer program product. This computer program product includes one or more computer instructions (programs). When these computer program instructions (programs) are loaded and executed on a computer, they fully or partially generate the processes or functions required by the embodiments of this application. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer, or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0201] If this function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, or the part that contributes to the existing technology, or the part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of each implementation method of this application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program code.

[0202] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims and the description.

Claims

1. A communication method, characterized in that: include: Receive first signaling, where the first signaling includes first indication information for indicating a first frequency domain resource and a first modulation and coding strategy (MCS); receiving second signaling, where the second signaling includes second indication information for indicating second frequency domain resources and a second MCS, and the first frequency domain resources include the second frequency domain resources; Determine, according to the first signaling and the second signaling, that a first downlink signal is received on the first frequency domain resource within a first time period, wherein the MCS corresponding to the part of the first downlink signal carried on the second frequency domain resource is the second MCS, and the MCS corresponding to the part of the first downlink signal carried on the third frequency domain resource is the first MCS or the third MCS, the third frequency domain resource is a frequency domain resource in the first frequency domain resource that does not include the second frequency domain resource, and the third MCS is determined based on the first MCS.

2. The method according to claim 1, characterized in that The third MCS is determined based on the first MCS and a first MCS offset value, and the first MCS offset value is carried in the second signaling.

3. The method according to claim 1 or 2, characterized in that The first signaling is used to indicate receiving a second downlink signal within a second time period, and the second signaling further includes third indication information for indicating the first time period; The second time period includes the first time period, and the signal carried by the second downlink signal in the first time period is the first downlink signal.

4. The method according to claim 1 or 2, characterized in that The second signaling is used to indicate that the first downlink signal is received within the first time period.

5. The method according to claim 4, characterized in that The first signaling further includes fourth indication information for indicating a second time period, where the second time period includes the first time period.

6. The method according to claim 1 or 2, characterized in that The first signaling is carried in a physical downlink shared channel PDSCH, and the second signaling is carried in a physical downlink control channel PDCCH.

7. The method according to claim 1 or 2, characterized in that The first signaling and the second signaling are both carried in the PDCCH.

8. A communication method, characterized in that: include: Sending first signaling, where the first signaling includes first indication information for indicating a first frequency domain resource and a first MCS; Send second signaling, the second signaling including second indication information for indicating second frequency domain resources and second MCS, wherein the first frequency domain resources include the second frequency domain resources, the second MCS is the MCS corresponding to the part of the first downlink signal carried on the second frequency domain resources, the MCS corresponding to the part of the first downlink signal carried on the third frequency domain resources is the first MCS or the third MCS, the third frequency domain resources are the frequency domain resources in the first frequency domain resources that do not include the second frequency domain resources, and the third MCS is determined based on the first MCS.

9. The method according to claim 8, characterized in that The third MCS is determined based on the first MCS and a first MCS offset value, and the first MCS offset value is carried in the second signaling.

10. The method according to claim 8 or 9, characterized in that The first signaling is used to indicate receiving a second downlink signal within a second time period, and the second signaling further includes third indication information for indicating the first time period; The second time period includes the first time period, and the signal carried by the second downlink signal in the first time period is the first downlink signal.

11. The method according to claim 10, characterized in that The second signaling is used to indicate that the first downlink signal is received within the first time period.

12. The method according to claim 11, characterized in that The first signaling further includes fourth indication information for indicating a second time period, where the second time period includes the first time period.

13. The method according to claim 8 or 9, characterized in that The first signaling is carried in the PDSCH, and the second signaling is carried in the PDCCH.

14. The method according to claim 8 or 9, characterized in that The first signaling and the second signaling are both carried in the PDCCH.

15. A communication device, characterized in that: include: a transceiver unit, configured to receive first signaling, where the first signaling includes first indication information for indicating a first frequency domain resource and a first MCS; The transceiver unit is further configured to receive second signaling, where the second signaling includes second indication information for indicating second frequency domain resources and a second MCS, and the first frequency domain resources include the second frequency domain resources; A processing unit is used to determine, based on the first signaling and the second signaling, whether to receive a first downlink signal on the first frequency domain resource within a first time period, wherein the MCS corresponding to the part of the first downlink signal carried on the second frequency domain resource is the second MCS, and the MCS corresponding to the part of the first downlink signal carried on the third frequency domain resource is the first MCS or the third MCS, the third frequency domain resource is a frequency domain resource in the first frequency domain resource that does not include the second frequency domain resource, and the third MCS is determined based on the first MCS.

16. The device according to claim 15, characterized in that The third MCS is determined based on the first MCS and a first MCS offset value, and the first MCS offset value is carried in the second signaling.

17. The device according to claim 15 or 16, characterized in that The first signaling is used to indicate receiving a second downlink signal within a second time period, and the second signaling further includes third indication information for indicating the first time period; The second time period includes the first time period, and the signal carried by the second downlink signal in the first time period is the first downlink signal.

18. The device according to claim 15 or 16, characterized in that The second signaling is used to indicate that the first downlink signal is received within the first time period.

19. The device according to claim 18, characterized in that The first signaling further includes fourth indication information for indicating a second time period, where the second time period includes the first time period.

20. The device according to claim 15 or 16, characterized in that The first signaling is carried in the PDSCH, and the second signaling is carried in the PDCCH.

21. The device according to claim 15 or 16, characterized in that The first signaling and the second signaling are both carried in the PDCCH.

22. A communication device, characterized in that: include: a transceiver unit, configured to send first signaling, where the first signaling includes first indication information for indicating a first frequency domain resource and a first MCS; The transceiver unit is also used to send second signaling, and the second signaling includes second indication information for indicating second frequency domain resources and second MCS, wherein the first frequency domain resources include the second frequency domain resources, the second MCS is the MCS corresponding to the part of the first downlink signal carried on the second frequency domain resources, the MCS corresponding to the part of the first downlink signal carried on the third frequency domain resources is the first MCS or the third MCS, the third frequency domain resources are the frequency domain resources in the first frequency domain resources that do not include the second frequency domain resources, and the third MCS is determined based on the first MCS.

23. The device according to claim 22, characterized in that The third MCS is determined based on the first MCS and a first MCS offset value, and the first MCS offset value is carried in the second signaling.

24. The device according to claim 22 or 23, characterized in that The first signaling is used to indicate receiving a second downlink signal within a second time period, and the second signaling further includes third indication information for indicating the first time period; The second time period includes the first time period, and the signal carried by the second downlink signal in the first time period is the first downlink signal.

25. The device according to claim 24, characterized in that The second signaling is used to indicate that the first downlink signal is received within the first time period.

26. The device according to claim 25, characterized in that The first signaling further includes fourth indication information for indicating a second time period, where the second time period includes the first time period.

27. The device according to claim 22 or 23, characterized in that The first signaling is carried in the PDSCH, and the second signaling is carried in the PDCCH.

28. The device according to claim 22 or 23, characterized in that The first signaling and the second signaling are both carried in the PDCCH.

29. A communication device, characterized in that: include: Memory, for storing computer instructions; A processor, configured to execute computer instructions stored in the memory, so that the communication device performs the method according to any one of claims 1 to 7 or the method according to any one of claims 8 to 14.

30. A computer-readable storage medium, characterized in that A computer program is stored thereon, and when the computer program is executed by a communication device, the communication device executes the method according to any one of claims 1 to 7 or the method according to any one of claims 8 to 14.

Images