Wireless communication method and apparatus, and device

Abstract

The present application belongs to the technical field of communications. Disclosed are a wireless communication method and apparatus, and a device. The wireless communication method in the embodiments of the present application comprises: a terminal acquiring first information, wherein the first information is used for indicating an association relationship between a first time-frequency resource and a transmission parameter of a first downlink shared channel, the first time-frequency resource is used for monitoring a first downlink control channel or first downlink control information, and the first downlink control channel or the first downlink control information is used for scheduling initial transmission or retransmission of the first downlink shared channel.

Description

Wireless communication method, apparatus and device

[0001] Cross Reference to Related Applications

[0002] This application claims priority to the Chinese Patent Application No. 202410656875.0, filed on May 24, 2024, and entitled "Wireless communication method, apparatus and device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application belongs to the field of communication technology, and particularly relates to a wireless communication method, apparatus and device. BACKGROUND

[0004] At present, for some services with high data transmission frequency, the network side configures dense periodic PDCCH monitoring occasions or PDCCH search spaces, and the terminal needs to periodically blind detect PDCCH, which causes high terminal energy consumption, which is not friendly to terminal energy saving.

[0005] Although SPS PDSCH or SPS PUSCH can reduce the signaling overhead of PDCCH and the energy consumption of PDCCH monitoring to a certain extent, if the transmission data has a large data volume change in each SPS period, the SPS PDSCH or SPS PUSCH will have a resource size and data volume mismatch, causing resource waste and other problems. In addition, for the retransmission of PDSCH or PUSCH, it still depends on the scheduling of dynamic PDSCH or dynamic PUSCH, and for the activation of SPS PDSCH or SPS PUSCH, it still depends on the scheduling of dynamic PDSCH or dynamic PUSCH.

[0006] Therefore, how to reduce the signaling overhead of PDCCH and the energy consumption of PDCCH monitoring is a problem to be solved. SUMMARY

[0007] The embodiments of the present application provide a wireless communication method, apparatus and device, which can solve the problem of large signaling overhead of PDCCH and large energy consumption of PDCCH monitoring.

[0008] In a first aspect, a wireless communication method is provided, comprising:

[0009] acquiring, by a terminal, first information;

[0010] The first information is used to indicate an association relationship between a first time-frequency resource and a transmission parameter of a first downlink shared channel, the first time-frequency resource is used to monitor a first downlink control channel or first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule initial transmission or retransmission of the first downlink shared channel.

[0011] In a second aspect, a wireless communication method is provided, comprising:

[0012] sending, by a network-side device, first information to a terminal;

[0013] The first information is used to indicate an association relationship between a first time-frequency resource and a transmission parameter of a first downlink shared channel, the first time-frequency resource is used to monitor a first downlink control channel or first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule initial transmission or retransmission of the first downlink shared channel.

[0014] In a third aspect, a wireless communication apparatus is provided, comprising:

[0015] a receiving module configured to acquire first information;

[0016] The first information is used to indicate an association relationship between a first time-frequency resource and a transmission parameter of a first downlink shared channel, the first time-frequency resource is used to monitor a first downlink control channel or first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule initial transmission or retransmission of the first downlink shared channel.

[0017] In a fourth aspect, a wireless communication apparatus is provided, comprising:

[0018] a sending module configured to send first information to a terminal;

[0019] The first information is used to indicate an association relationship between a first time-frequency resource and a transmission parameter of a first downlink shared channel, the first time-frequency resource is used to monitor a first downlink control channel or first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule initial transmission or retransmission of the first downlink shared channel.

[0020] In a fifth aspect, a wireless communication apparatus is provided, which is configured to perform the steps of the method according to the first aspect or implement the steps of the method according to the second aspect.

[0021] In a sixth aspect, a terminal is provided, which comprises a processor and a memory, the memory storing programs or instructions executable on the processor, and the programs or instructions, when executed by the processor, implement the steps of the method according to the first aspect.

[0022] In a seventh aspect, a terminal is provided, which comprises a processor and a communication interface.

[0023] The communication interface is configured to acquire the first information.

[0024] The first information is used to indicate an association between the first time-frequency resource and the transmission parameter of the first downlink shared channel, the first time-frequency resource is used to monitor the first downlink control channel or the first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule the initial transmission or retransmission of the first downlink shared channel.

[0025] In an eighth aspect, a network-side device is provided, which comprises a processor and a memory, the memory storing programs or instructions executable on the processor, and the programs or instructions, when executed by the processor, implement the steps of the method according to the first aspect.

[0026] In a ninth aspect, a network-side device is provided, which comprises a processor and a communication interface.

[0027] The communication interface is configured to send the first information to the terminal.

[0028] The first information is used to indicate an association between the first time-frequency resource and the transmission parameter of the first downlink shared channel, the first time-frequency resource is used to monitor the first downlink control channel or the first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule the initial transmission or retransmission of the first downlink shared channel.

[0029] In a tenth aspect, a readable storage medium is provided, which stores programs or instructions, and the programs or instructions, when executed by a processor, implement the steps of the method according to the first aspect or the steps of the method according to the second aspect.

[0030] In an eleventh aspect, a wireless communication system is provided, which comprises a terminal and a network-side device, the terminal being configured to implement the steps of the method according to the first aspect, and the network-side device being configured to implement the steps of the method according to the second aspect.

[0031] In a twelfth aspect, a chip is provided, which comprises a processor and a communication interface, the communication interface being coupled to the processor, and the processor being configured to run programs or instructions to implement the method according to the first aspect or the method according to the second aspect.

[0032] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium, and which is executed by at least one processor to implement the steps of the wireless communication method according to the first aspect, or to implement the steps of the wireless communication method according to the second aspect.

[0033] In the embodiments of the present application, the terminal can learn the association between the first time-frequency resource and the transmission parameter of the first downlink shared channel based on the first information, wherein the first time-frequency resource is used for monitoring the first downlink control channel or the first downlink control information, and the first downlink control channel or the first downlink control information is used for scheduling the initial transmission or retransmission of the first downlink shared channel. Specifically, there is an association between the first time-frequency resource and the transmission parameter of the first downlink shared channel, and the terminal can determine the first time-frequency resource based on the transmission parameter of the first downlink shared channel, or the terminal can determine the transmission parameter of the first downlink shared channel based on the first time-frequency resource, which can avoid frequent monitoring of the first downlink control channel or the first downlink control information, and avoid dynamic scheduling of the initial transmission or retransmission of the first downlink shared channel, reduce the signaling overhead and energy consumption of monitoring the first downlink control channel or the first downlink control information, and also can make the transmission parameter of the first downlink shared channel match the data size, which can avoid resource waste while ensuring the transmission of the first downlink channel. BRIEF DESCRIPTION OF DRAWINGS

[0034] FIG. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application.

[0035] FIG. 2 is a schematic flow chart of a wireless communication method according to an embodiment of the present application.

[0036] FIG. 3 is a schematic diagram of PDSCH initial transmission and PDSCH retransmission according to an embodiment of the present application.

[0037] FIG. 4 is a schematic diagram of a DCI indicating the increase / decrease amount of the time domain resource or frequency domain resource of the relative reference time-frequency resource of the PDSCH according to an embodiment of the present application.

[0038] FIG. 5 is a schematic diagram of further indicating the terminal the time length of data to be buffered after starting to demodulate the PDCCH when configuring / indicating the PDCCH monitoring occasion or PDCCH search space according to an embodiment of the present application.

[0039] FIG. 6 is a schematic diagram of an on-demand PDCCH MO according to an embodiment of the present application.

[0040] FIG. 7 is a schematic block diagram of a wireless communication device according to an embodiment of the present application.

[0041] FIG. 8 is a schematic block diagram of another wireless communication device according to embodiments of the present application.

[0042] FIG. 9 is a schematic block diagram of a communication device according to embodiments of the present application.

[0043] FIG. 10 is a schematic diagram of a hardware structure of a terminal according to embodiments of the present application.

[0044] FIG. 11 is a schematic block diagram of a network-side device according to embodiments of the present application. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0046] The terms "first", "second", and the like in the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second" are usually a category, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "or" in the present application means at least one of the connected objects. For example, the protection scope of "A or B" at least covers three schemes, namely, scheme one: including A and not including B; scheme two: including B and not including A; scheme three: including A and B. In addition, the terms "A and / or B", "at least one of A and B", "at least one of A or B" also at least cover the above three schemes, respectively. The character " / " generally represents that the objects before and after are in an "or" relationship.

[0047] The term "indication" in the present application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). Among them, the direct indication can be understood as that the sender explicitly informs the receiver of specific information, operations to be performed or requested results, etc. in the sent indication; the indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or judges and determines the operation to be performed or the requested result according to the judgment result.

[0048] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems. th

[0049] Figure 1 shows a block diagram of a wireless communication system to which the embodiments of the present application can be applied. Specifically, the wireless communication system includes a terminal 11 and a network-side device 12.

[0050] ​The terminal 11 can be a terminal-side device such as a mobile phone, a Tablet Personal Computer, a Laptop Computer, a notebook computer, a Personal Digital Assistant (PDA), a palm computer, a netbook, an Ultra-mobile Personal Computer (UMPC), a Mobile Internet Device (MID), an Augmented Reality (AR) device, a Virtual Reality (VR) device, a robot, a wearable device, a flight vehicle, a Vehicle User Equipment (VUE), a shipboard device, a Pedestrian User Equipment (PUE), a smart home (a home device with a wireless communication function, such as a refrigerator, a television, a washing machine, or furniture), a game console, a Personal Computer (PC), a teller machine, or a self-service machine. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, and the like), a smart wristband, smart clothing, and the like. The vehicle-mounted device can also be referred to as a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application.

[0051] The network-side device 12 can include an access network device or a core network device.

[0052] Optionally, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc. Among them, the base station can be referred to as a node B (NB), an evolved node B (eNB), a next generation node B (gNB), a new radio node B (NR node B), an access point, a relay base station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home node B (HNB), a home evolved node B, a transmit / receive point (TRP), or some other suitable term in the art, as long as the same technical effect is achieved. The base station is not limited to a specific technical term, and it should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0053] Optionally, the core network device can also be referred to as a core network node, a core network function, or a core network network element, etc., which includes but is not limited to at least one of the following: a mobility management entity (MME), an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), a policy control function (PCF), a policy and charging rules function (PCRF), an edge application server discovery function (EASDF), a unified data management (UDM), a unified data repository (UDR), a home subscriber server (HSS), a centralized network configuration (CNC), a network repository function (NRF), a network exposure function (NEF), a local NEF (L-NEF), a binding support function (BSF), an application function (AF), a location management function (LMF), a gateway mobile location center (GMLC), a network data analytics function (NWDAF), etc. It should be noted that only the core network device in the NR system is taken as an example for introduction in the embodiments of the present application, and the specific type of the core network device is not limited. If the name of the core network device mentioned in the embodiments of the present application changes in the subsequent protocol version (for example, 6G), it is also within the protection scope of the present application.

[0054] Optionally, the core network device can be implemented by one or more function modules in one device, or can be implemented by multiple devices together, and the embodiments of the present application do not make a specific limitation here. It can be understood that the above function modules can be network elements in a hardware device, can be software function modules running on a special hardware, or can be virtualized function modules instantiated on a platform (for example, a cloud platform).

[0055] For better understanding of the embodiments of the present application, the multi-modal service is described.

[0056] There are various data service models for 6G multi-modal services. For haptic data transmission or 3D file data transmission, there is a quasi-periodic service model, and the data transmission frequency of these services is high. The transmission data amount in each cycle of this quasi-periodic service may have large difference.

[0057] The transceiver of the 6G multi-modal service is not limited to terminals such as mobile phones and network side devices such as base stations or TRPs, but also involves low-power terminals such as gloves, handles, and watches.

[0058] For better understanding of the embodiments of the present application, the NR PDCCH is described.

[0059] The control channel element (CCE) is the most basic structural unit of the PDCCH, and one CCE is composed of 6 resource element groups (REGs), and each REG is composed of 12 resource elements (REs).

[0060] In order to adapt to the channel environment and the size of the downlink control information (DCI), the PDCCH candidate can be mapped to N CCEs, where N is the aggregation level (AL) of the PDCCH, and the value of N can be 1 / 2 / 4 / 8 / 16.

[0061] For better understanding of the embodiments of the present application, the blind detection of the NR PDCCH is described.

[0062] When a terminal (UE) demodulates a PDCCH, it needs to perform PDCCH blind detection in a periodic searching space (SS) configured at the network side. The SS configuration information includes an SS type (such as a common SS (Common SS) and a UE-specific SS (UE-specific SS)), a DCI format to be detected, one / more PDCCH ALs corresponding to each DCI format, and the number of PDCCH candidates to be detected corresponding to each PDCCH AL.

[0063] For better understanding of the embodiments of the present application, the scheduling of a dynamic PDSCH or a dynamic PUSCH and the scheduling of a semi-static PDSCH or a semi-static PUSCH are described.

[0064] The dynamic PDSCH or dynamic PUSCH scheduling mode is a relatively basic scheduling mode and can be used in all scenarios. In the dynamic PDSCH or dynamic PUSCH scheduling, PDSCH or PUSCH transmission parameters are indicated by a PDCCH or DCI. In order to reduce the signaling overhead of the PDCCH or DCI, for periodic data transmission services, a semi-static PDSCH or semi-static PUSCH scheduling mode is introduced. In the semi-static PDSCH or semi-static PUSCH scheduling, part or all of the PDSCH or PUSCH transmission parameters are configured semi-statically by a higher layer, which can save the signaling overhead of the PDCCH or DCI.

[0065] The wireless communication method provided by the embodiments of the present application is described in detail below in combination with the accompanying drawings and some embodiments and application scenarios.

[0066] FIG. 2 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 2, the wireless communication method 200 can include at least part of the following contents:

[0067] S210, a network side device sends first information to a terminal; wherein the first information is used to indicate an association relationship between a first time-frequency resource and transmission parameters of a first downlink shared channel, the first time-frequency resource is used to monitor a first downlink control channel or first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule initial transmission or retransmission of the first downlink shared channel.

[0068] S220, the terminal acquires first information; wherein the first information is used to indicate an association relationship between a first time-frequency resource and a transmission parameter of a first downlink shared channel, the first time-frequency resource is used to monitor a first downlink control channel or a first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule initial transmission or retransmission of the first downlink shared channel.

[0069] It should be understood that FIG. 2 shows steps or operations of the wireless communication method 200, but these steps or operations are only examples, and the present application can also perform other operations or variations of the operations in FIG. 2.

[0070] In the embodiments of the present application, there is an association relationship between the first time-frequency resource and the transmission parameter of the first downlink shared channel, the terminal can determine the first time-frequency resource based on the transmission parameter of the first downlink shared channel, or the terminal can determine the transmission parameter of the first downlink shared channel based on the first time-frequency resource, which can avoid frequent monitoring of the first downlink control channel or the first downlink control information, and avoid dynamic scheduling of initial transmission or retransmission of the first downlink shared channel, reduce the signaling overhead and energy consumption of monitoring the first downlink control channel or the first downlink control information, and also can make the transmission parameter of the first downlink shared channel match the data size, which can avoid resource waste while ensuring the transmission of the first downlink channel.

[0071] It should be noted that the embodiments of the present application are described by taking the association relationship between the first time-frequency resource and the transmission parameter of the first downlink shared channel as an example, and it should be understood that the embodiments of the present application are also applicable to the association relationship between at least two first time-frequency resources and at least two transmission parameters of the first downlink shared channel, and the present application is not limited thereto.

[0072] The embodiments of the present application can be applied to multi-modal services, such as 6G multi-modal services.

[0073] In some embodiments, the first information includes information carried in signaling, or protocol agreed information, or information obtained by the terminal based on its own implementation, etc.

[0074] In some embodiments, in the above S220, the terminal can acquire the first information from the network side device, for example, the terminal receives the first information from the network side device; or, in the above S220, the terminal can acquire the first information from the protocol agreed information; or, in the above S220, the terminal can acquire the first information from other terminals; or, in the above S220, the terminal can determine the first information based on the configuration information acquired from the network side device.

[0075] In the embodiments of the present application, the first information is used to indicate the association between the first time-frequency resource and the transmission parameter of the first downlink shared channel, which means that the terminal can obtain the association between the first time-frequency resource and the transmission parameter of the first downlink shared channel through the first information.

[0076] In the embodiments of the present application, the initial transmission of the first downlink shared channel can be understood as that the data carried by the first downlink shared channel is the first transmission data or contains the first transmission data; and the retransmission of the first downlink shared channel can be understood as that the data information carried by the first downlink shared channel is the retransmission data information or contains the retransmission data.

[0077] In some embodiments, the first downlink shared channel is a PDSCH. Of course, the first downlink shared channel can also be other downlink shared channels or subsequent evolved downlink shared channels, and the embodiments of the present application are not limited thereto.

[0078] In some embodiments, the first downlink control channel is a PDCCH. Of course, the first downlink control channel can also be other downlink control channels or subsequent evolved downlink control channels, and the embodiments of the present application are not limited thereto.

[0079] In some embodiments, the first downlink control information is DCI. Of course, the first downlink control information can also be other downlink control information or subsequent evolved downlink control information, and the embodiments of the present application are not limited thereto.

[0080] In some embodiments, the first time-frequency resource includes but is not limited to at least one of the following:

[0081] PDCCH monitoring occasion (MO), PDCCH search space, DCI search area.

[0082] In some embodiments, the first information can be carried by dynamic signaling. For example, the first information can be carried by downlink control information (DCI), or the first information can be carried by a media access control layer control element (MAC CE).

[0083] In some embodiments, the first downlink shared channel is a semi-persistent scheduling (SPS) downlink shared channel; or the first downlink shared channel is a periodic downlink shared channel. The embodiments can improve the scheduling flexibility of the semi-persistent scheduling downlink shared channel or the periodic downlink shared channel.

[0084] The semi-persistent downlink shared channel in the embodiments of the present application can be equivalent to or replaced by a semi-persistent downlink shared channel, and the present application is not limited in this regard.

[0085] For example, for the first downlink control channel being a PDCCH and the first downlink shared channel being a PDSCH, for a semi-persistent PDSCH or a periodic PDSCH, a PDCCH monitoring occasion or a PDCCH search space or a DCI search region associated with part or all of the periodic PDSCH is configured, which is used to transmit DCI to control or schedule initial transmission or retransmission of the PDSCH.

[0086] In some embodiments, the association between the first time-frequency resource and the transmission parameter of the first downlink shared channel can also be agreed by a protocol, and the embodiments of the present application are not limited in this regard.

[0087] For example, for the first downlink control channel being a PDCCH and the first downlink shared channel being a PDSCH, the PDCCH monitoring occasion or the PDCCH search space or the DCI search region associated with the PDSCH can be explicitly indicated to the terminal, or the PDCCH monitoring occasion or the PDCCH search space or the DCI search region associated with the PDSCH can be implicitly derived from the resource position of the PDSCH.

[0088] In some embodiments, the association between the first time-frequency resource and the transmission parameter of the first downlink shared channel includes but is not limited to at least one of the following:

[0089] The first time-frequency resource is located at a specific Demodulation Reference Signal (DMRS) position of the first downlink shared channel;

[0090] The first time-frequency resource is located adjacent to a specific DMRS of the first downlink shared channel;

[0091] The first time-frequency resource is a specific time-frequency resource of the first downlink shared channel;

[0092] The time-domain starting position of the first time-frequency resource is consistent with the time-domain starting position of the first downlink shared channel;

[0093] The frequency-domain starting position of the first time-frequency resource is consistent with the frequency-domain starting position of the first downlink shared channel;

[0094] The first time-frequency resource is located within the time-frequency resource of the first downlink shared channel;

[0095] The first time-frequency resource is located at the first time-domain unit of the first downlink shared channel;

[0096] The first time-frequency resource is located at the first m time domain units of the first downlink shared channel.

[0097] The first time-frequency resource starts at a specific time domain unit of the first downlink shared channel.

[0098] The first time-frequency resource is located at the first frequency domain unit of the first downlink shared channel.

[0099] The first time-frequency resource is located at the first n frequency domain units of the first downlink shared channel.

[0100] The first time-frequency resource starts at a specific frequency domain unit of the first downlink shared channel.

[0101] The time domain starting position of the first time-frequency resource has a first offset from the time domain starting position or the time domain ending position of the first downlink shared channel.

[0102] The frequency domain starting position of the first time-frequency resource has a second offset from the frequency domain starting position or the frequency domain ending position of the first downlink shared channel.

[0103] The time domain ending position of the first time-frequency resource has a third offset from the time domain starting position or the time domain ending position of the first downlink shared channel.

[0104] The frequency domain ending position of the first time-frequency resource has a fourth offset from the frequency domain starting position or the frequency domain ending position of the first downlink shared channel.

[0105] Wherein, m and n are positive integers.

[0106] Optionally, the specific DMRS can be configured by the network side, or the specific DMRS can be agreed by the protocol.

[0107] In some implementations, the first time-frequency resource is located at the position (such as the time domain position) of the specific DMRS of the first downlink shared channel, so that the position of the first time-frequency resource can be determined based on the position of the specific DMRS of the first downlink shared channel. Optionally, the first time-frequency resource is located at the position of the first DMRS of the first downlink shared channel, or the first time-frequency resource is located at the position of the kth DMRS of the first downlink shared channel. Specifically, in this case, the first downlink control channel is a sequence type PDCCH, and the first downlink control channel is multiplexed with the time-frequency resource of the DMRS.

[0108] In some implementations, the first time-frequency resource is located at a position (e.g., a time domain position) adjacent to a specific DMRS of the first downlink shared channel, so that the position of the first time-frequency resource can be determined based on the position adjacent to the specific DMRS of the first downlink shared channel. Optionally, the first time-frequency resource is located at a time domain position adjacent to a first DMRS of the first downlink shared channel, or the first time-frequency resource is located at a time domain position adjacent to a k-th DMRS of the first downlink shared channel.

[0109] In some implementations, a time domain starting position of the first time-frequency resource is consistent with a time domain starting position of the first downlink shared channel, so that the time domain starting position of the first time-frequency resource can be determined based on the time domain starting position of the first downlink shared channel.

[0110] In some implementations, a frequency domain starting position of the first time-frequency resource is consistent with a frequency domain starting position of the first downlink shared channel, so that the frequency domain starting position of the first time-frequency resource can be determined based on the frequency domain starting position of the first downlink shared channel.

[0111] In some implementations, the first time-frequency resource is located within a time-frequency resource of the first downlink shared channel, so that the range of the first time-frequency resource can be determined based on the time-frequency resource of the first downlink shared channel.

[0112] In some implementations, the first time-frequency resource is located at a first time domain unit of the first downlink shared channel, so that the time domain position of the first time-frequency resource can be determined based on the first time domain unit of the first downlink shared channel.

[0113] In some implementations, the first time-frequency resource is located at a first time domain unit of the first downlink shared channel, so that the time domain position of the first time-frequency resource can be determined based on the first time domain unit of the first downlink shared channel.

[0114] In some implementations, the first time-frequency resource is located at a first time domain unit of the first downlink shared channel, so that the time domain position of the first time-frequency resource can be determined based on the first time domain unit of the first downlink shared channel.

[0115] In some implementations, the first time-frequency resource is located at a first time domain unit of the first downlink shared channel, so that the time domain position of the first time-frequency resource can be determined based on the first time domain unit of the first downlink shared channel.

[0116] In some implementations, the first time-frequency resource is located at a first time domain unit of the first downlink shared channel, so that the time domain position of the first time-frequency resource can be determined based on the first time domain unit of the first downlink shared channel.

[0117] In some implementations, the first time-frequency resource starts at a specific frequency domain unit of the first downlink shared channel, so that the frequency domain location of the first time-frequency resource can be determined based on the specific frequency domain unit of the first downlink shared channel.

[0118] In some implementations, there is a first offset between the time domain start location of the first time-frequency resource and the time domain start location or the time domain end location of the first downlink shared channel, so that the time domain start location of the first time-frequency resource can be determined based on the time domain start location or the time domain end location of the first downlink shared channel and the first offset.

[0119] In some implementations, there is a second offset between the frequency domain start location of the first time-frequency resource and the frequency domain start location or the frequency domain end location of the first downlink shared channel, so that the frequency domain start location of the first time-frequency resource can be determined based on the frequency domain start location or the frequency domain end location of the first downlink shared channel and the second offset.

[0120] In some implementations, there is a third offset between the time domain end location of the first time-frequency resource and the time domain start location or the time domain end location of the first downlink shared channel, so that the time domain end location of the first time-frequency resource can be determined based on the time domain start location or the time domain end location of the first downlink shared channel and the third offset.

[0121] In some implementations, there is a fourth offset between the frequency domain end location of the first time-frequency resource and the frequency domain start location or the frequency domain end location of the first downlink shared channel, so that the frequency domain end location of the first time-frequency resource can be determined based on the frequency domain start location or the frequency domain end location of the first downlink shared channel and the fourth offset.

[0122] Optionally, the specific time-frequency resource can be configured by the network side, or the specific time-frequency resource can be agreed by the protocol.

[0123] Optionally, the specific frequency domain resource can be configured by the network side, or the specific frequency domain resource can be agreed by the protocol.

[0124] Optionally, m and / or n can be configured by the network side, or m and / or n can be agreed by the protocol.

[0125] Optionally, the first offset can be configured by the network side, or the first offset can be agreed by the protocol.

[0126] Optionally, the second offset can be configured by the network side, or the second offset can be agreed by the protocol.

[0127] Optionally, the third offset can be configured by the network side, or the third offset can be agreed by the protocol.

[0128] Optionally, the fourth offset can be configured by the network side, or the fourth offset can be agreed by a protocol.

[0129] The time domain unit described in the embodiments of the present application can be one of the following: symbol, time slot, subframe, frame, hour, minute, second, millisecond, microsecond, and nanosecond.

[0130] The frequency domain unit described in the embodiments of the present application can be one of the following: physical resource block (PRB), bandwidth part (BWP), subcarrier, and resource block (RB).

[0131] In some embodiments, the wireless communication method 200 further includes determining, by the terminal, whether the first downlink control channel or the first downlink control information is mapped on the first time-frequency resource.

[0132] In the present embodiment, the terminal determines whether the first downlink control channel or the first downlink control information is mapped on the first time-frequency resource. Optionally, the first time-frequency resource can be discarded, or the first downlink control channel or the first downlink control information originally mapped on the first time-frequency resource can be discarded, so as to save the signaling overhead of the first downlink control channel or the first downlink control information, or save the overhead of the terminal blind detection of the first downlink control channel or the first downlink control information.

[0133] For example, the first downlink control channel is PDCCH, and the first downlink shared channel is PDSCH. The PDCCH monitoring occasion or the PDCCH search space or the DCI search area or the PDCCH or the DCI associated with the PDSCH can be discarded, so as to save the signaling overhead of the PDCCH or the DCI, or save the overhead of the terminal blind detection of the PDCCH or the DCI.

[0134] In some embodiments, in a case where the terminal determines that the first time-frequency resource is not mapped with the first downlink control channel or the first downlink control information, the transmission parameter of the first downlink shared channel is subject to a high-layer configuration, or the transmission parameter of the first downlink shared channel is subject to an indication of a second downlink control channel or a second downlink control information, or the first downlink shared channel is allowed to be mapped to the first time-frequency resource.

[0135] The second downlink control channel or the second downlink control information is a previous downlink control channel or a previous downlink control information of the first downlink control channel or the first downlink control information.

[0136] For example, if the PDCCH associated with the PDSCH is discarded, the resource allocation parameters and other transmission parameters of the PDSCH can be subject to the parameters configured by the higher layer, or the resource allocation parameters and other transmission parameters of the PDSCH are subject to the indication of the last PDCCH (e.g., the second downlink control channel), or the PDSCH can be mapped at the location of the PDCCH monitoring occasion or the PDCCH search space or the DCI search region associated with the PDCCH (in the case that the time-frequency resources of the PDCCH monitoring occasion or the PDCCH search space or the DCI search region associated with the PDCCH are limited within the time-frequency resources of the PDSCH).

[0137] In some embodiments, the terminal can determine whether the first downlink control channel or the first downlink control information is mapped on the first time-frequency resource based on at least one of the following:

[0138] an indication of the third downlink control channel or the third downlink control information;

[0139] a result of blind detection of the first downlink control channel or the first downlink control information;

[0140] a result of blind detection of the first downlink shared channel;

[0141] a DMRS obtained by blind detection of the first downlink shared channel.

[0142] For example, if the PDCCH associated with the PDSCH is discarded, the resource allocation parameters and other transmission parameters of the PDSCH can be subject to the parameters configured by the higher layer, or the resource allocation parameters and other transmission parameters of the PDSCH are subject to the indication of the last PDCCH (e.g., the second downlink control channel), or the PDSCH can be mapped at the location of the PDCCH monitoring occasion or the PDCCH search space or the DCI search region associated with the PDCCH (in the case that the time-frequency resources of the PDCCH monitoring occasion or the PDCCH search space or the DCI search region associated with the PDCCH are limited within the time-frequency resources of the PDSCH).

[0143] For example, if the PDCCH associated with the PDSCH is discarded, the resource allocation parameters and other transmission parameters of the PDSCH can be subject to the parameters configured by the higher layer, or the resource allocation parameters and other transmission parameters of the PDSCH are subject to the indication of the last PDCCH (e.g., the second downlink control channel), or the PDSCH can be mapped at the location of the PDCCH monitoring occasion or the PDCCH search space or the DCI search region associated with the PDCCH (in the case that the time-frequency resources of the PDCCH monitoring occasion or the PDCCH search space or the DCI search region associated with the PDCCH are limited within the time-frequency resources of the PDSCH).

[0144] For example, the PDCCH is discarded if the PDSCH is not detected.

[0145] In some embodiments, the first information is further used to indicate whether the first downlink control channel or the first downlink control information is used to schedule the retransmission of the first downlink shared channel.

[0146] In the embodiment, the first information is further used to indicate whether the first downlink control channel or the first downlink control information is used to schedule the retransmission of the first downlink shared channel, so that the terminal can know whether the first downlink control channel or the first downlink control information is used to schedule the retransmission of the first downlink shared channel based on the first information, and then can determine whether the initial transmission or the retransmission of the first downlink shared channel is performed.

[0147] For example, the first information indicates that a PDCCH monitoring occasion or a PDCCH search space is associated with the PDSCH retransmission, as shown in FIG. 3, the PDCCH or DCI used to schedule the PDSCH retransmission is mapped in the PDCCH monitoring occasion or the PDCCH search space.

[0148] For example, the first information indicates that a PDCCH monitoring occasion or a PDCCH search space is associated with the PDSCH retransmission, as shown in FIG. 3, the PDCCH or DCI used to schedule the PDSCH retransmission is mapped in the PDCCH monitoring occasion or the PDCCH search space.

[0149] In some embodiments, the first information is carried by the scheduling signaling of the initial transmission or the last retransmission of the first downlink shared channel.

[0150] For example, the first information is the scheduling signaling of the initial transmission of the PDSCH or the last retransmission of the PDSCH.

[0151] In some embodiments, in the case where the first downlink control channel or the first downlink control information is used to schedule the retransmission of the first downlink shared channel, if the terminal correctly demodulates the initial transmission or the last retransmission of the first downlink shared channel before the first time-frequency resource, the terminal discards the first time-frequency resource, or the terminal no longer monitors the first time-frequency resource.

[0152] For example, if the terminal can correctly demodulate the PDSCH transmission (e.g., PDSCH initial transmission or the last PDSCH retransmission) associated with the PDSCH retransmission associated PDCCH before the PDCCH monitoring occasion or PDCCH search space of the PDSCH retransmission, the terminal does not need to monitor PDCCH in the PDCCH monitoring occasion or PDCCH search space of the PDSCH retransmission associated PDCCH.

[0153] In some embodiments, the first downlink control channel or the first downlink control information can be used to indicate the transmission parameter of the first downlink shared channel, so as to reduce the overhead of indicating the transmission parameter of the first downlink shared channel.

[0154] In some embodiments, the first downlink control channel or the first downlink control information is used to indicate at least one of the following:

[0155] an increment or decrement of the time domain resource of the first downlink shared channel relative to the reference time-frequency resource;

[0156] an increment or decrement of the frequency domain resource of the first downlink shared channel relative to the reference time-frequency resource;

[0157] a number of basic time-frequency units occupied by the first downlink shared channel, wherein the basic time-frequency unit is P frequency domain units * Q time domain units, and P and Q are positive integers;

[0158] a change amount of the time-frequency resource of the first downlink shared channel relative to the time-frequency resource of the first downlink shared channel in the last period;

[0159] the time-frequency resource of the first downlink shared channel remains unchanged relative to the time-frequency resource of the first downlink shared channel in the last period;

[0160] an index of a group of time-frequency resources corresponding to the first downlink shared channel in at least two groups of preconfigured time-frequency resources;

[0161] a Modulation and Coding Scheme (MCS) associated with the first downlink shared channel;

[0162] a DMRS pattern associated with the first downlink shared channel;

[0163] a Multiple Input Multiple Output (MIMO) layer associated with the first downlink shared channel;

[0164] precoding information associated with the first downlink shared channel;

[0165] The first downlink shared channel is associated with Hybrid Automatic Repeat reQuest (HARQ) feedback information.

[0166] Optionally, the reference time-frequency resource can be agreed by a protocol, or the reference time-frequency resource can be configured by the network side device.

[0167] Optionally, the basic time-frequency unit can be agreed by a protocol, or the basic time-frequency unit can be configured by the network side device.

[0168] For example, the basic time-frequency unit is P PRB*Q symbol.

[0169] In the embodiment, the first downlink control channel or the first downlink control information can be used to indicate the time-frequency resource variation amount of the first downlink shared channel, the number of basic time-frequency units occupied by the first downlink shared channel, the index of the group of time-frequency resources corresponding to the first downlink shared channel, the MCS associated with the first downlink shared channel, the DMRS mode associated with the first downlink shared channel, the MIMO layer associated with the first downlink shared channel, the precoding information associated with the first downlink shared channel, the HARQ feedback information associated with the first downlink shared channel, and the like, to assist the reception of the first downlink shared channel and reduce the overhead of indicating the above parameters.

[0170] For example, taking the first downlink control channel as PDCCH, the first downlink control information as DCI, and the first downlink shared channel as PDSCH as an example, the PDCCH or the DCI indicates the increase / decrease amount of the time domain resource or the frequency domain resource of the PDSCH relative to the reference time-frequency resource, for example, the reference time-frequency resource is configured when the PDSCH is configured semi-statically or periodically.

[0171] For example, taking the first downlink control channel as PDCCH, the first downlink control information as DCI, and the first downlink shared channel as PDSCH as an example, the PDCCH or the DCI indicates the number of basic time-frequency units occupied by the PDSCH, wherein the basic time-frequency unit can be a PDSCH resource allocation basic unit, for example, the resource allocation basic unit is N PRB*M symbol.

[0172] For example, the first downlink control channel is PDCCH, the first downlink control information is DCI, and the first downlink shared channel is PDSCH. The PDCCH or DCI indicates the PDSCH resource allocation of the current period based on the PDSCH resource allocation of the last period. For example, the PDCCH or DCI indicates the change of the time domain or frequency domain resource of the PDSCH of the current period relative to the time-frequency resource allocation of the PDSCH of the last period. Or, the PDCCH or DCI indicates that the time domain or frequency domain resource of the PDSCH of the current period remains unchanged relative to the time-frequency resource allocation of the PDSCH of the last period.

[0173] For example, the first downlink control channel is PDCCH, the first downlink control information is DCI, and the first downlink shared channel is PDSCH. A plurality of time-frequency resources are configured, and the PDCCH or DCI indicates the identification / number of the time-frequency resource corresponding to the PDSCH in the plurality of time-frequency resources.

[0174] For example, the first downlink control channel is PDCCH, the first downlink control information is DCI, and the first downlink shared channel is PDSCH. The PDCCH or DCI indicates the PDSCH demodulation or transmission related parameters, wherein the PDSCH demodulation or transmission related parameters can include MCS, DMRS pattern, MIMO layer, precoder, HARQ feedback related parameters, etc.

[0175] For example, the first downlink control information is DCI, and the first downlink shared channel is PDSCH. As shown in FIG. 4, the DCI can indicate the increase / decrease amount of the time domain resource or frequency domain resource of the PDSCH relative to the reference time-frequency resource. In A, the time-frequency resource of the PDSCH remains unchanged relative to the reference time-frequency resource. Specifically, the DCI can indicate that the increase / decrease amount of the time domain resource or frequency domain resource of the PDSCH relative to the reference time-frequency resource is zero. In B, the time-frequency resource of the PDSCH becomes less relative to the reference time-frequency resource. Specifically, the DCI can indicate the decrease amount of the time domain resource or frequency domain resource of the PDSCH relative to the reference time-frequency resource. In C, the time-frequency resource of the PDSCH becomes more relative to the reference time-frequency resource. Specifically, the DCI can indicate the increase amount of the time domain resource or frequency domain resource of the PDSCH relative to the reference time-frequency resource.

[0176] In some embodiments, the first information includes but is not limited to at least one of the following:

[0177] The configuration information of the first time-frequency resource, and the configuration information of the transmission parameter of the first downlink shared channel.

[0178] In some embodiments, the configuration information of the transmission parameter of the first downlink shared channel includes at least one of the following:

[0179] an interval between a time-domain start position or a time-domain end position of the first downlink shared channel and a time-domain start position or a time-domain end position of the first time-frequency resource;

[0180] a transmission duration of the first downlink shared channel;

[0181] a time duration for buffering data after starting or ending demodulation of the first downlink control channel or the first downlink control information;

[0182] a frequency-domain start position and / or a frequency-domain end position of the first downlink shared channel;

[0183] a transmission frequency-domain width of the first downlink shared channel.

[0184] For example, when the first downlink control information is DCI and the first downlink shared channel is PDSCH, the PDCCH monitoring occasion or the PDCCH search space is configured / indicated, and the PDSCH transmission parameters associated with the PDCCH monitoring occasion or the PDCCH search space can also be configured / indicated to the terminal to assist the terminal in PDSCH reception.

[0185] For example, when the first downlink control information is DCI and the first downlink shared channel is PDSCH, the PDCCH monitoring occasion or the PDCCH search space is configured / indicated, and further indicated: the interval between the PDSCH start / end time and the PDCCH start / end time (which can also be the maximum / minimum value of the interval), and / or the transmission duration of the PDSCH (which can also be the maximum / minimum value of the transmission duration), so that the terminal can determine how long the data needs to be buffered according to the time distribution of the PDSCH.

[0186] For example, when the first downlink control information is DCI and the first downlink shared channel is PDSCH, the PDCCH monitoring occasion or the PDCCH search space is configured / indicated, and further indicated: the time duration for buffering data after the terminal starts or ends demodulation of the PDCCH. For example, as shown in FIG. 5, when the PDCCH monitoring occasion or the PDCCH search space is configured / indicated, the time duration for buffering data after the terminal starts demodulation of the PDCCH is further indicated, so as to determine the transmission duration of the PDSCH.

[0187] For example, when the first DCI is DCI and the first downlink shared channel is PDSCH, the configuration / indication of the PDCCH monitoring occasion or the PDCCH search space further indicates: the starting / ending frequency domain resource of the PDSCH (which can also be the maximum / minimum value of the frequency domain resource), and / or the transmission frequency domain width of the PDSCH (which can also be the maximum / minimum value of the frequency domain width), so that the terminal can determine the receiver bandwidth according to the frequency domain distribution of the PDSCH.

[0188] In some embodiments, for example, the first time-frequency resource is a PDCCH monitoring occasion (PDCCH MO), the PDCCH MO can be dynamically set, and the dense periodic PDCCH MO monitoring can be reduced to achieve the purpose of UE energy saving.

[0189] For example, dynamic signaling (MAC CE, DCI, etc.) indicates an on-demand PDCCH monitoring occasion or PDCCH search space, and the terminal performs blind detection of PDCCH according to the on-demand PDCCH monitoring occasion or PDCCH search space, and adds a matching PDCCH MO for specific PDSCH / PUSCH data services. As shown in FIG. 6, the on-demand PDCCH MO is different from the sparse regular PDCCH MO. Specifically, in case 1, a matching PDCCH MO is added for quasi-static scheduling data transmission (which can also be replaced by periodic data transmission) (such as initial transmission or retransmission of PDSCH or initial transmission or retransmission of PUSCH); in case 2, a PDCCH MO is dynamically added for intensive data transmission (which can also be replaced by burst data transmission) (such as initial transmission or retransmission of PDSCH or initial transmission or retransmission of PUSCH); and in case 3, an on-demand PDCCH MO is added for ordinary data transmission (such as initial transmission or retransmission of PDSCH or initial transmission or retransmission of PUSCH).

[0190] For example, dynamic signaling can indicate / activate one or more non-periodic PDCCH monitoring occasion / search space related parameters, and the indication information includes at least one of the following:

[0191] The location of the PDCCH monitoring occasion or the PDCCH search space;

[0192] The duration of a PDCCH monitoring occasion or a PDCCH search space;

[0193] The number of PDCCH candidates on a PDCCH monitoring occasion or a PDCCH search space or information related to the number of PDCCH candidates;

[0194] The aggregation level of PDCCH candidates on a PDCCH monitoring occasion or a PDCCH search space or information related to the aggregation level of PDCCH candidates;

[0195] a frequency domain location of a PDCCH candidate on a PDCCH monitoring occasion or a PDCCH search space, or information related to the frequency domain location of the PDCCH candidate, e.g., a starting frequency domain location of the PDCCH candidate to be monitored.

[0196] For example, a location of a PDCCH monitoring occasion or a PDCCH search space includes one of the following:

[0197] a starting location of a PDCCH monitoring occasion or a PDCCH search space is indicated in a form of a reference point and an offset, where the reference point is one of the following:

[0198] a starting location of a PDCCH monitoring occasion or a PDCCH search space is directly indicated as an absolute time;

[0199] a plurality of locations of PDCCH monitoring occasions / search spaces are indicated in a form of a bitmap;

[0200] a location of a PDCCH monitoring occasion or a PDCCH search space is indicated from a pattern of a plurality of PDCCH monitoring occasions or a PDCCH search spaces.

[0201] For example, the dynamic signaling can indirectly indicate the PDCCH monitoring occasion or the PDCCH search space related parameters. For example, a group / multiple groups of configuration parameters related to the PDCCH monitoring occasion or the PDCCH search space are configured by a higher layer, and the dynamic signaling indicates a configuration identification corresponding to an effective configuration.

[0202] Therefore, in the embodiments of the present application, the terminal can obtain the association between the first time-frequency resource and the transmission parameter of the first downlink shared channel based on the first information, where the first time-frequency resource is used for monitoring the first downlink control channel or the first downlink control information, and the first downlink control channel or the first downlink control information is used for scheduling the initial transmission or retransmission of the first downlink shared channel. Specifically, there is an association between the first time-frequency resource and the transmission parameter of the first downlink shared channel, and the terminal can determine the first time-frequency resource based on the transmission parameter of the first downlink shared channel, or the terminal can determine the transmission parameter of the first downlink shared channel based on the first time-frequency resource, which can avoid frequent monitoring of the first downlink control channel or the first downlink control information, and avoid dynamic scheduling of the initial transmission or retransmission of the first downlink shared channel, reduce the signaling overhead and energy consumption of monitoring the first downlink control channel or the first downlink control information, and also can match the transmission parameter of the first downlink shared channel with the data size, ensure the transmission of the first downlink channel, and avoid resource waste.

[0203] The wireless communication method provided in the embodiments of the present application can be executed by a wireless communication device. The wireless communication device is taken as an example in the embodiments of the present application to illustrate the wireless communication device provided in the embodiments of the present application.

[0204] The wireless communication device provided in the embodiments of the present application can be a communication device or a component in the communication device, for example, a chip. The communication device can be a terminal, a network side device or a server, etc. For example, the terminal can include but is not limited to the types of the terminal 11 listed above, the network side device can include but is not limited to the types of the network side device 12 listed above, and the embodiments of the present application do not make specific limitations.

[0205] The wireless communication device includes a receiving module, a sending module and a processing module. The receiving module, the sending module and the processing module can be implemented by software or hardware. When implemented by hardware, the processing module can be implemented by a processor, for example, a general processor, a special processor, etc., such as a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), an artificial intelligent (AI) processor, a graphics processing unit (GPU), an application specific integrated circuit (ASIC), a network processor (NP), a field programmable gate array (FPGA) or other programmable logic devices, a gate circuit, a transistor, a discrete hardware component, etc. The receiving module and the sending module can be implemented by a communication interface, which can include one or more of a transceiver, a pin, a circuit, a bus, a radio frequency unit, etc.

[0206] When the wireless communication device is a terminal or a component in the terminal, referring to FIG. 7, the wireless communication device 300 includes a receiving module 301 and a processing module 302.

[0207] The receiving module 301 or the processing module 302 is configured to acquire first information.

[0208] The first information is used to indicate an association between a first time-frequency resource and a transmission parameter of a first downlink shared channel, the first time-frequency resource is used to monitor a first downlink control channel or a first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule initial transmission or retransmission of the first downlink shared channel.

[0209] In some embodiments, the first downlink shared channel is a semi-persistent scheduling downlink shared channel; or,

[0210] The first downlink shared channel is a periodic downlink shared channel.

[0211] In some embodiments, the association between the first time-frequency resource and the transmission parameter of the first downlink shared channel includes at least one of the following:

[0212] The first time-frequency resource is located at a position of a specific demodulation reference signal (DMRS) of the first downlink shared channel.

[0213] The first time-frequency resource is located at a position adjacent to a specific DMRS of the first downlink shared channel.

[0214] The first time-frequency resource is a specific time-frequency resource of the first downlink shared channel.

[0215] A time-domain starting position of the first time-frequency resource is consistent with a time-domain starting position of the first downlink shared channel.

[0216] A frequency-domain starting position of the first time-frequency resource is consistent with a frequency-domain starting position of the first downlink shared channel.

[0217] The first time-frequency resource is located within a time-frequency resource of the first downlink shared channel.

[0218] The first time-frequency resource is located at a first time-domain unit of the first downlink shared channel.

[0219] The first time-frequency resource is located at the first m time-domain units of the first downlink shared channel.

[0220] The first time-frequency resource starts at a specific time-domain unit of the first downlink shared channel.

[0221] The first time-frequency resource is located at a first frequency-domain unit of the first downlink shared channel.

[0222] The first time-frequency resource is located at the first n frequency-domain units of the first downlink shared channel.

[0223] The first time-frequency resource starts at a specific frequency-domain unit of the first downlink shared channel.

[0224] a first offset between a time domain start position of the first time-frequency resource and a time domain start position or a time domain end position of the first downlink shared channel;

[0225] a second offset between a frequency domain start position of the first time-frequency resource and a frequency domain start position or a frequency domain end position of the first downlink shared channel;

[0226] a third offset between a time domain end position of the first time-frequency resource and a time domain start position or a time domain end position of the first downlink shared channel;

[0227] a fourth offset between a frequency domain end position of the first time-frequency resource and a frequency domain start position or a frequency domain end position of the first downlink shared channel;

[0228] wherein m and n are both positive integers.

[0229] In some embodiments, the processing module 302 is further configured to determine whether the first downlink control channel or the first downlink control information is mapped on the first time-frequency resource.

[0230] In some embodiments, in a case that the wireless communication device 300 determines that the first downlink control channel or the first downlink control information is not mapped on the first time-frequency resource, a transmission parameter of the first downlink shared channel is subject to a higher layer configuration, or a transmission parameter of the first downlink shared channel is subject to an indication of a second downlink control channel or a second downlink control information, or the first downlink shared channel is allowed to be mapped to the first time-frequency resource.

[0231] wherein the second downlink control channel or the second downlink control information is a previous downlink control channel or a previous downlink control information of the first downlink control channel or the first downlink control information.

[0232] In some embodiments, the processing module 302 is specifically configured to:

[0233] determine whether the first downlink control channel or the first downlink control information is mapped on the first time-frequency resource based on at least one of:

[0234] an indication of a third downlink control channel or a third downlink control information;

[0235] a result of blind detection of the first downlink control channel or the first downlink control information;

[0236] a result of blind detection of the first downlink shared channel;

[0237] a DMRS acquired by blind detection of the first downlink shared channel.

[0238] In some embodiments, in case that the first downlink control channel or the first downlink control information is used for scheduling retransmission of the first downlink shared channel, if the terminal correctly demodulates the initial transmission or the last retransmission of the first downlink shared channel before the first time-frequency resource, the processing module 302 is further configured to discard the first time-frequency resource, or the wireless communication device 300 no longer monitors the first time-frequency resource.

[0239] In some embodiments, the first downlink control channel or the first downlink control information is used to indicate at least one of the following:

[0240] an increment or decrement of time domain resources of the first downlink shared channel relative to reference time-frequency resources;

[0241] an increment or decrement of frequency domain resources of the first downlink shared channel relative to reference time-frequency resources;

[0242] a number of basic time-frequency units occupied by the first downlink shared channel, wherein the basic time-frequency unit is P frequency domain units * Q time domain units, and P and Q are both positive integers;

[0243] a change amount of time-frequency resources of the first downlink shared channel relative to time-frequency resources of the first downlink shared channel in a last period;

[0244] time-frequency resources of the first downlink shared channel remain unchanged relative to time-frequency resources of the first downlink shared channel in a last period;

[0245] an index of a group of time-frequency resources corresponding to the first downlink shared channel in at least two groups of preconfigured time-frequency resources;

[0246] a modulation and coding scheme (MCS) associated with the first downlink shared channel;

[0247] a DMRS pattern associated with the first downlink shared channel;

[0248] a multiple-input multiple-output (MIMO) layer associated with the first downlink shared channel;

[0249] precoding information associated with the first downlink shared channel;

[0250] hybrid automatic repeat request (HARQ) feedback information associated with the first downlink shared channel.

[0251] In some embodiments, the first information includes at least one of the following:

[0252] configuration information of the first time-frequency resource, configuration information of transmission parameters of the first downlink shared channel.

[0253] In some embodiments, the configuration information of the transmission parameter of the first downlink shared channel comprises at least one of:

[0254] an interval between a time domain start position or a time domain end position of the first downlink shared channel and a time domain start position or a time domain end position of the first time-frequency resource;

[0255] a transmission duration of the first downlink shared channel;

[0256] a time duration for buffering data after starting or ending demodulation of the first downlink control channel or the first downlink control information;

[0257] a frequency domain start position and / or a frequency domain end position of the first downlink shared channel;

[0258] a transmission frequency domain width of the first downlink shared channel.

[0259] In some embodiments, the first information is further used for indicating whether the first downlink control channel or the first downlink control information is used for scheduling retransmission of the first downlink shared channel.

[0260] In some embodiments, the first information is carried by scheduling signaling of initial transmission or last retransmission of the first downlink shared channel.

[0261] In some embodiments, the first time-frequency resource comprises at least one of: a physical downlink control channel (PDCCH) monitoring occasion, a PDCCH search space, and a downlink control information (DCI) search region.

[0262] In some embodiments, the receiving module 301 can be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip.

[0263] It should be understood that the wireless communication apparatus 300 according to the embodiments of the present application can correspond to the terminal in the method embodiments of the present application, and each unit in the wireless communication apparatus 300 is respectively used to implement the corresponding process of the terminal in the method 200 shown in FIG. 2, and for brevity, will not be described here.

[0264] When the wireless communication apparatus is a network side device or a component in the network side device, referring to FIG. 8, the wireless communication apparatus 400 comprises:

[0265] The sending module 401 is used for sending first information to a terminal.

[0266] The first information is used to indicate an association between a first time-frequency resource and a transmission parameter of a first downlink shared channel, the first time-frequency resource is used to monitor a first downlink control channel or a first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule initial transmission or retransmission of the first downlink shared channel.

[0267] In some embodiments, the first downlink shared channel is a semi-persistent scheduling downlink shared channel; or,

[0268] The first downlink shared channel is a periodic downlink shared channel.

[0269] In some embodiments, the association between the first time-frequency resource and the transmission parameter of the first downlink shared channel includes at least one of the following:

[0270] The first time-frequency resource is located at a position of a specific demodulation reference signal (DMRS) of the first downlink shared channel.

[0271] The first time-frequency resource is located at a position adjacent to a specific DMRS of the first downlink shared channel.

[0272] The first time-frequency resource is a specific time-frequency resource of the first downlink shared channel.

[0273] A time-domain starting position of the first time-frequency resource is consistent with a time-domain starting position of the first downlink shared channel.

[0274] A frequency-domain starting position of the first time-frequency resource is consistent with a frequency-domain starting position of the first downlink shared channel.

[0275] The first time-frequency resource is located within a time-frequency resource of the first downlink shared channel.

[0276] The first time-frequency resource is located at a first time-domain unit of the first downlink shared channel.

[0277] The first time-frequency resource is located at the first m time-domain units of the first downlink shared channel.

[0278] The first time-frequency resource starts at a specific time-domain unit of the first downlink shared channel.

[0279] The first time-frequency resource is located at a first frequency-domain unit of the first downlink shared channel.

[0280] The first time-frequency resource is located at the first n frequency-domain units of the first downlink shared channel.

[0281] The first time-frequency resource starts at a specific frequency-domain unit of the first downlink shared channel.

[0282] a first offset between a time domain start position of the first time-frequency resource and a time domain start position or a time domain end position of the first downlink shared channel;

[0283] a second offset between a frequency domain start position of the first time-frequency resource and a frequency domain start position or a frequency domain end position of the first downlink shared channel;

[0284] a third offset between a time domain end position of the first time-frequency resource and a time domain start position or a time domain end position of the first downlink shared channel;

[0285] a fourth offset between a frequency domain end position of the first time-frequency resource and a frequency domain start position or a frequency domain end position of the first downlink shared channel;

[0286] wherein m and n are both positive integers.

[0287] In some embodiments, in a case where the first downlink control channel or the first downlink control information is not mapped on the first time-frequency resource, a transmission parameter of the first downlink shared channel is subject to a higher layer configuration, or the transmission parameter of the first downlink shared channel is subject to an indication of a second downlink control channel or a second downlink control information, or the first downlink shared channel is allowed to be mapped to the first time-frequency resource;

[0288] wherein the second downlink control channel or the second downlink control information is a previous downlink control channel or a previous downlink control information of the first downlink control channel or the first downlink control information.

[0289] In some embodiments, whether the first downlink control channel or the first downlink control information is mapped on the first time-frequency resource is determined based on at least one of the following:

[0290] an indication of a third downlink control channel or a third downlink control information;

[0291] a result of blind detection of the first downlink control channel or the first downlink control information;

[0292] a result of blind detection of the first downlink shared channel;

[0293] a DMRS acquired by blind detection of the first downlink shared channel.

[0294] In some embodiments, the first downlink control channel or the first downlink control information is used to indicate at least one of the following:

[0295] an increment or a decrement of a time domain resource of the first downlink shared channel relative to a reference time-frequency resource;

[0296] an increment or decrement of a frequency domain resource of the first downlink shared channel relative to a reference time-frequency resource;

[0297] a number of basic time-frequency units occupied by the first downlink shared channel, wherein the basic time-frequency unit is P frequency domain units * Q time domain units, and P and Q are both positive integers;

[0298] a change amount of a time-frequency resource of the first downlink shared channel relative to a time-frequency resource of the first downlink shared channel in a previous period;

[0299] a time-frequency resource of the first downlink shared channel remains unchanged relative to a time-frequency resource of the first downlink shared channel in a previous period;

[0300] an index of a group of time-frequency resources corresponding to the first downlink shared channel in at least two groups of preconfigured time-frequency resources;

[0301] a modulation and coding scheme (MCS) associated with the first downlink shared channel;

[0302] a DMRS pattern associated with the first downlink shared channel;

[0303] a multiple-input multiple-output (MIMO) layer associated with the first downlink shared channel;

[0304] precoding information associated with the first downlink shared channel;

[0305] hybrid automatic repeat request (HARQ) feedback information associated with the first downlink shared channel.

[0306] In some embodiments, the first information includes at least one of the following:

[0307] configuration information of the first time-frequency resource, and configuration information of a transmission parameter of the first downlink shared channel.

[0308] In some embodiments, the configuration information of the transmission parameter of the first downlink shared channel includes at least one of the following:

[0309] an interval between a time domain starting position or a time domain ending position of the first downlink shared channel and a time domain starting position or a time domain ending position of the first time-frequency resource;

[0310] a transmission duration of the first downlink shared channel;

[0311] a duration of data that needs to be buffered after starting or ending demodulation of the first downlink control channel or the first downlink control information;

[0312] a frequency domain starting position and / or a frequency domain ending position of the first downlink shared channel;

[0313] A transmission frequency domain width of the first downlink shared channel.

[0314] In some embodiments, the first information is further used for indicating whether the first downlink control channel or the first downlink control information is used for scheduling a retransmission of the first downlink shared channel.

[0315] In some embodiments, the first information is carried by scheduling signaling of an initial transmission or a last retransmission of the first downlink shared channel.

[0316] In some embodiments, the first time-frequency resource comprises at least one of the following: a physical downlink control channel (PDCCH) monitoring occasion, a PDCCH search space, and a downlink control information (DCI) search region.

[0317] In some embodiments, the sending module 401 can be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip.

[0318] It should be understood that the wireless communication apparatus 400 according to the embodiments of the present application can correspond to the network side device in the method embodiments of the present application, and each unit in the wireless communication apparatus 400 is respectively used to implement the corresponding flow of the network side device in the method 200 shown in FIG. 2, and for brevity, details are not described herein.

[0319] Therefore, in the embodiments of the present application, the terminal can know the association relationship between the first time-frequency resource and the transmission parameter of the first downlink shared channel based on the first information, wherein the first time-frequency resource is used for monitoring the first downlink control channel or the first downlink control information, and the first downlink control channel or the first downlink control information is used for scheduling the initial transmission or the retransmission of the first downlink shared channel. Specifically, there is an association relationship between the first time-frequency resource and the transmission parameter of the first downlink shared channel, and the terminal can determine the first time-frequency resource based on the transmission parameter of the first downlink shared channel, or the terminal can determine the transmission parameter of the first downlink shared channel based on the first time-frequency resource, which can avoid frequent monitoring of the first downlink control channel or the first downlink control information, and avoid dynamic scheduling of the initial transmission or the retransmission of the first downlink shared channel, reduce the signaling overhead and energy consumption of monitoring the first downlink control channel or the first downlink control information, and also can make the transmission parameter of the first downlink shared channel match the data size, which can avoid resource waste while ensuring the transmission of the first downlink channel.

[0320] The wireless communication apparatus provided by the embodiments of the present application can implement each process of the method embodiments of FIG. 2 and achieve the same technical effects, and for the sake of brevity, details are not described herein.

[0321] As shown in FIG. 9, the embodiment of the present application further provides a communication device 500, comprising a processor 501 and a memory 502, wherein the memory 502 stores programs or instructions which can be run on the processor 501.

[0322] For example, when the communication device 500 is a terminal, the programs or instructions are executed by the processor 501 to implement each step performed by the terminal in the wireless communication method embodiment, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0323] For another example, when the communication device 500 is a network side device, the programs or instructions are executed by the processor 501 to implement each step performed by the network side device in the wireless communication method embodiment, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0324] The embodiment of the present application further provides a terminal, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to run programs or instructions to implement the steps in the method embodiment shown in FIG. 2. The terminal embodiment corresponds to the terminal side method embodiment described above, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and achieve the same technical effects. The terminal can be the wireless communication device 300 shown in FIG. 7. Specifically, FIG. 10 is a schematic diagram of the hardware structure of a terminal for implementing the embodiment of the present application.

[0325] The terminal 600 includes, but is not limited to, at least part of the following components: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, and a processor 610, etc.

[0326] Those skilled in the art can understand that the terminal 600 can further include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 610 through a power management system, so as to realize the functions of power management, power consumption management, etc. through the power management system. The terminal structure shown in FIG. 10 does not constitute a limitation on the terminal, and the terminal can include more or fewer components than the illustrated components, or combine certain components, or different component arrangements, which are not described herein.

[0327] It should be understood that in the embodiments of the present application, the input unit 604 can include a graphics processor 6041 and a microphone 6042, and the graphics processor 6041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 606 can include a display panel 6061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 can include two parts of a touch detection device and a touch controller. The other input devices 6072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), a trackball, a mouse, a joystick, and the like, which will not be described here.

[0328] In the embodiments of the present application, after the radio frequency unit 601 receives the downlink data from the network side device, it can be transmitted to the processor 610 for processing. In addition, the radio frequency unit 601 can send uplink data to the network side device. Generally, the radio frequency unit 601 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0329] The memory 609 can be used to store software programs or instructions and various data. The memory 609 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 609 can include a volatile memory or a non-volatile memory. The non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM), a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synch link DRAM (SLDRAM), and a Direct Rambus RAM (DRRAM). The memory 609 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0330] The processor 610 can include one or more processing units; optionally, the processor 610 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 610.

[0331] In some embodiments, the radio frequency unit 601 is configured to obtain first information;

[0332] The first information is used to indicate an association relationship between a first time-frequency resource and a transmission parameter of a first downlink shared channel, the first time-frequency resource is used to monitor a first downlink control channel or first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule initial transmission or retransmission of the first downlink shared channel.

[0333] Therefore, in the embodiments of the present application, the terminal can learn the association between the first time-frequency resource and the transmission parameter of the first downlink shared channel based on the first information, wherein the first time-frequency resource is used for monitoring the first downlink control channel or the first downlink control information, and the first downlink control channel or the first downlink control information is used for scheduling the initial transmission or retransmission of the first downlink shared channel. Specifically, there is an association between the first time-frequency resource and the transmission parameter of the first downlink shared channel, and the terminal can determine the first time-frequency resource based on the transmission parameter of the first downlink shared channel, or the terminal can determine the transmission parameter of the first downlink shared channel based on the first time-frequency resource, which can avoid frequent monitoring of the first downlink control channel or the first downlink control information, and avoid dynamic scheduling of the initial transmission or retransmission of the first downlink shared channel, reduce the signaling overhead and energy consumption of monitoring the first downlink control channel or the first downlink control information, and also can make the transmission parameter of the first downlink shared channel match the data size, which can avoid resource waste while ensuring the transmission of the first downlink channel.

[0334] It can be understood that the implementation processes of the implementation manners mentioned in the embodiments can refer to the related descriptions of the method embodiment wireless communication method 200, and achieve the same or corresponding technical effects. To avoid repetition, they will not be described here again.

[0335] The embodiments of the present application also provide a network side device, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to realize the steps of the method embodiments as shown in FIG. 2. The network side device embodiments correspond to the terminal or network side device method embodiments described above, and each implementation process and implementation manner of the above method embodiments can be applied to the network side device embodiments and can achieve the same technical effects.

[0336] Specifically, the embodiments of the present application also provide a network side device, which can be the wireless communication device 400 shown in FIG. 8.

[0337] As shown in FIG. 11, the network side device 700 includes an antenna 71, a radio frequency device 72, a baseband device 73, a processor 74 and a memory 75. The antenna 71 is connected with the radio frequency device 72. In the uplink direction, the radio frequency device 72 receives information through the antenna 71, and sends the received information to the baseband device 73 for processing. In the downlink direction, the baseband device 73 processes the information to be sent and sends it to the radio frequency device 72, and the radio frequency device 72 processes the received information and sends it out through the antenna 71.

[0338] The method performed by the network side device in the above embodiments can be implemented in the baseband device 73, which includes a baseband processor.

[0339] The baseband device 73 can include at least one baseband board on which a plurality of chips are disposed, as shown in FIG. 11. One of the chips is, for example, a baseband processor, which is connected with the memory 75 through a bus interface to invoke programs in the memory 75 to perform the operations performed by the network-side device shown in the above method embodiments.

[0340] The network-side device can further include a network interface 76, which is, for example, a Common Public Radio Interface (CPRI).

[0341] Specifically, the network-side device 700 of the embodiments of the present application further includes instructions or programs stored in the memory 75 and executable on the processor 74, and the processor 74 invokes the instructions or programs in the memory 75 to perform the method performed by the modules shown in FIG. 8 and achieve the same technical effects. To avoid repetition, details are not described herein.

[0342] The embodiments of the present application further provide a readable storage medium having programs or instructions stored thereon, which are executed by a processor to implement each process of the above wireless communication method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0343] The processor is the processor in the terminal or the network-side device described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. In some examples, the readable storage medium can be a non-transitory readable storage medium.

[0344] The embodiments of the present application further provide a chip including a processor and a communication interface, the communication interface being coupled with the processor, and the processor being configured to execute programs or instructions to implement each process of the above wireless communication method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0345] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system chip, a system on chip (SoC), a chip system or a system on chip (SoC) chip, etc.

[0346] The embodiments of the present application further provide a computer program / program product stored in a storage medium, which is executed by at least one processor to implement each process of the above wireless communication method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0347] The embodiments of the present application further provide a communication system, comprising: a terminal and a network side device, the terminal being configured to perform the steps performed by the terminal in the wireless communication method described above, and the network side device being configured to perform the steps performed by the network side device in the wireless communication method described above.

[0348] It should be noted that, in this document, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements are not limited to those elements, but can also include other elements not expressly listed, or inherent to such processes, methods, articles, or apparatuses. Without further limitation, an element preceded by "comprising" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that includes the recited element. In addition, it should be noted that the scope of the methods and apparatuses of the present embodiments are not limited to performing functions in the order recited in the figures or as described in the discussion. For example, functions described as sequential in the description can be performed at the same time or in the reverse order. Additionally, various steps described in connection with some examples can be combined or omitted. Furthermore, features described in connection with some examples can be combined in other examples.

[0349] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be realized by means of computer software products and general hardware platforms, and of course, can also be realized by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disc, optical disc, etc.), and includes a plurality of instructions for making the terminal or network side device perform the method described in each embodiment of the present application.

[0350] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative, but not restrictive. Those skilled in the art can make many forms of embodiments under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims, and these embodiments all belong to the protection scope of the present application.

Claims

1. A method for wireless communication, comprising: obtaining, by a terminal, first information; wherein the first information is used to indicate an association between a first time-frequency resource and a transmission parameter of a first downlink shared channel, the first time-frequency resource is used to monitor a first downlink control channel or a first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule a first transmission or a retransmission of the first downlink shared channel. 2.The method of claim 1, wherein: the first downlink shared channel is a semi-persistent scheduling downlink shared channel; or the first downlink shared channel is a periodic downlink shared channel. 3.The method of claim 1 or 2, wherein: the association between the first time-frequency resource and the transmission parameter of the first downlink shared channel comprises at least one of the following: the first time-frequency resource is located at a position of a specific demodulation reference signal (DMRS) of the first downlink shared channel; the first time-frequency resource is located at a position adjacent to a specific DMRS of the first downlink shared channel; the first time-frequency resource is a specific time-frequency resource of the first downlink shared channel; a time-domain starting position of the first time-frequency resource is consistent with a time-domain starting position of the first downlink shared channel; a frequency-domain starting position of the first time-frequency resource is consistent with a frequency-domain starting position of the first downlink shared channel; the first time-frequency resource is located within a time-frequency resource of the first downlink shared channel; the first time-frequency resource is located at a first time-domain unit of the first downlink shared channel; the first time-frequency resource is located at a first m time-domain units of the first downlink shared channel; the first time-frequency resource starts at a specific time-domain unit of the first downlink shared channel; the first time-frequency resource is located at a first frequency-domain unit of the first downlink shared channel; the first time-frequency resource is located at a first n frequency-domain units of the first downlink shared channel; the first time-frequency resource starts at a specific frequency-domain unit of the first downlink shared channel; there is a first offset between a time-domain starting position of the first time-frequency resource and a time-domain starting position or a time-domain ending position of the first downlink shared channel; there is a second offset between a frequency-domain starting position of the first time-frequency resource and a frequency-domain starting position or a frequency-domain ending position of the first downlink shared channel; there is a third offset between a time-domain ending position of the first time-frequency resource and a time-domain starting position or a time-domain ending position of the first downlink shared channel; there is a fourth offset between a frequency-domain ending position of the first time-frequency resource and a frequency-domain starting position or a frequency-domain ending position of the first downlink shared channel; wherein m and n are positive integers. The method further comprises: determining, by the terminal, whether the first downlink control channel or the first downlink control information is mapped on the first time-frequency resource. 5.The method of claim 4, wherein: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 4. The method of any one of claims 1 to 3, wherein, ​ ​ ​ in a case that the terminal determines that the first downlink control channel or the first downlink control information is not mapped on the first time-frequency resource, a transmission parameter of the first downlink shared channel is subject to a high layer configuration, or the transmission parameter of the first downlink shared channel is subject to an indication of a second downlink control channel or a second downlink control information, or the first downlink shared channel is allowed to be mapped on the first time-frequency resource; wherein the second downlink control channel or the second downlink control information is a previous downlink control channel or a previous downlink control information of the first downlink control channel or the first downlink control information.

6. The method of claim 4 or 5, wherein the terminal determines whether the first downlink control channel or the first downlink control information is mapped on the first time-frequency resource, comprising: the terminal determines whether the first downlink control channel or the first downlink control information is mapped on the first time-frequency resource based on at least one of the following: an indication of a third downlink control channel or a third downlink control information; a result of blind detection of the first downlink control channel or the first downlink control information; a result of blind detection of the first downlink shared channel; a DMRS obtained by blind detection of the first downlink shared channel.

7. The method of claim 4 or 5, wherein, the method further comprises: in a case that the first downlink control channel or the first downlink control information is used to schedule a retransmission of the first downlink shared channel, if the terminal correctly demodulates a first transmission or a last retransmission of the first downlink shared channel before the first time-frequency resource, the terminal discards the first time-frequency resource, or the terminal stops monitoring the first time-frequency resource.

8. The method of any one of claims 1 to 7, wherein the first downlink control channel or the first downlink control information is used to indicate at least one of the following: an increment or a decrement of a time domain resource of the first downlink shared channel relative to a reference time-frequency resource; an increment or a decrement of a frequency domain resource of the first downlink shared channel relative to a reference time-frequency resource; a number of basic time-frequency units occupied by the first downlink shared channel, wherein the basic time-frequency unit is P frequency domain units * Q time domain units, and P and Q are both positive integers; a change amount of a time-frequency resource of the first downlink shared channel relative to a time-frequency resource of the first downlink shared channel in a previous period; the time-frequency resource of the first downlink shared channel remains unchanged relative to a time-frequency resource of the first downlink shared channel in a previous period; an index of a group of time-frequency resources corresponding to the first downlink shared channel in at least two preconfigured groups of time-frequency resources; a modulation and coding scheme (MCS) associated with the first downlink shared channel; a DMRS pattern associated with the first downlink shared channel; a multiple-input multiple-output (MIMO) layer associated with the first downlink shared channel; precoding information associated with the first downlink shared channel; hybrid automatic repeat request (HARQ) feedback information associated with the first downlink shared channel.

9. The method of any one of claims 1 to 7, wherein the first information comprises at least one of the following: configuration information of the first time-frequency resource, configuration information of transmission parameter of the first downlink shared channel. 10.The method of claim 9, wherein, the configuration information of the transmission parameter of the first downlink shared channel comprises at least one of: an interval between a time domain starting position or a time domain ending position of the first downlink shared channel and a time domain starting position or a time domain ending position of the first time-frequency resource; a transmission duration of the first downlink shared channel; a duration of data that needs to be buffered after starting or ending demodulation of the first downlink control channel or the first downlink control information; a frequency domain starting position and / or a frequency domain ending position of the first downlink shared channel; a transmission frequency domain width of the first downlink shared channel. 11.The method of any one of claims 1-10, wherein, the first information is further used to indicate whether the first downlink control channel or the first downlink control information is used to schedule retransmission of the first downlink shared channel. 12.The method of claim 11, wherein, the first information is carried by scheduling signaling of initial transmission or last retransmission of the first downlink shared channel. 13.The method of any one of claims 1-12, wherein, the first time-frequency resource comprises at least one of: a physical downlink control channel (PDCCH) monitoring occasion, a PDCCH search space, a downlink control information (DCI) search region. 14.A method of wireless communication, comprising: sending, by a network side device, first information to a terminal; wherein the first information is used to indicate an association relationship between a first time-frequency resource and a transmission parameter of a first downlink shared channel, the first time-frequency resource is used to monitor a first downlink control channel or a first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule initial transmission or retransmission of the first downlink shared channel. 15.The method of claim 14, wherein, the first downlink shared channel is a semi-persistent scheduling downlink shared channel; or the first downlink shared channel is a periodic downlink shared channel. 16.The method of claim 14 or 15, wherein, the association relationship between the first time-frequency resource and the transmission parameter of the first downlink shared channel comprises at least one of: the first time-frequency resource is located at a position of a specific demodulation reference signal (DMRS) of the first downlink shared channel; the first time-frequency resource is located at a position adjacent to a specific DMRS of the first downlink shared channel; the first time-frequency resource is a specific time-frequency resource of the first downlink shared channel; a time domain starting position of the first time-frequency resource is consistent with a time domain starting position of the first downlink shared channel; a frequency domain starting position of the first time-frequency resource is consistent with a frequency domain starting position of the first downlink shared channel; the first time-frequency resource is located within a time-frequency resource of the first downlink shared channel; the first time-frequency resource is located at a first time domain unit of the first downlink shared channel; the first time-frequency resource is located at the first m time domain units of the first downlink shared channel; The first time-frequency resource starts from a specific time domain unit of the first downlink shared channel; The first time-frequency resource is located at a first frequency domain unit of the first downlink shared channel; The first time-frequency resource is located at the first n frequency domain units of the first downlink shared channel; The first time-frequency resource starts from a specific frequency domain unit of the first downlink shared channel; The time domain starting position of the first time-frequency resource and the time domain starting position or the time domain ending position of the first downlink shared channel have a first offset; The frequency domain starting position of the first time-frequency resource and the frequency domain starting position or the frequency domain ending position of the first downlink shared channel have a second offset; The time domain ending position of the first time-frequency resource and the time domain starting position or the time domain ending position of the first downlink shared channel have a third offset; The frequency domain ending position of the first time-frequency resource and the frequency domain starting position or the frequency domain ending position of the first downlink shared channel have a fourth offset; Wherein, m and n are positive integers.

17. The method of any one of claims 14-16, wherein, In the case that the first downlink control channel or the first downlink control information is not mapped on the first time-frequency resource, the transmission parameter of the first downlink shared channel is subject to a high layer configuration, or the transmission parameter of the first downlink shared channel is subject to an indication of a second downlink control channel or a second downlink control information, or the first downlink shared channel allows to be mapped to the first time-frequency resource; Wherein, the second downlink control channel or the second downlink control information is a previous downlink control channel or a previous downlink control information of the first downlink control channel or the first downlink control information.

18. The method of claim 17, wherein, Whether the first downlink control channel or the first downlink control information is mapped on the first time-frequency resource is determined based on at least one of the following: An indication of a third downlink control channel or a third downlink control information; A result of blind detection of the first downlink control channel or the first downlink control information; A result of blind detection of the first downlink shared channel; A DMRS obtained by blind detection of the first downlink shared channel.

19. The method of any one of claims 14-18, wherein, The first downlink control channel or the first downlink control information is used to indicate at least one of the following: An increment or a decrement of the time domain resource of the first downlink shared channel relative to a reference time-frequency resource; An increment or a decrement of the frequency domain resource of the first downlink shared channel relative to a reference time-frequency resource; A number of basic time-frequency units occupied by the first downlink shared channel, wherein the basic time-frequency unit is P frequency domain units * Q time domain units, and P and Q are positive integers; A change amount of the time-frequency resource of the first downlink shared channel relative to the time-frequency resource of the first downlink shared channel in a previous period; The time-frequency resource of the first downlink shared channel remains unchanged relative to the time-frequency resource of the first downlink shared channel in a previous period; an index of a group of time-frequency resources corresponding to the first downlink shared channel in the at least two groups of pre-configured time-frequency resources; a modulation and coding scheme (MCS) associated with the first downlink shared channel; a DMRS pattern associated with the first downlink shared channel; a multiple-input multiple-output (MIMO) layer associated with the first downlink shared channel; precoding information associated with the first downlink shared channel; hybrid automatic repeat request (HARQ) feedback information associated with the first downlink shared channel.

20. The method of any one of claims 14-19, wherein the first information comprises at least one of: configuration information of the first time-frequency resources, and configuration information of transmission parameters of the first downlink shared channel.

21. The method of claim 20, wherein the configuration information of transmission parameters of the first downlink shared channel comprises at least one of: an interval between a time-domain starting position or a time-domain ending position of the first downlink shared channel and a time-domain starting position or a time-domain ending position of the first time-frequency resources; a transmission duration of the first downlink shared channel; a duration of data that needs to be buffered after starting or ending demodulation of the first downlink control channel or the first downlink control information; a frequency-domain starting position and / or a frequency-domain ending position of the first downlink shared channel; a transmission frequency-domain width of the first downlink shared channel.

22. The method of any one of claims 14-21, wherein the first information is further used to indicate whether the first downlink control channel or the first downlink control information is used to schedule retransmission of the first downlink shared channel.

23. The method of claim 22, wherein the first information is carried by scheduling signaling of an initial transmission or a last retransmission of the first downlink shared channel.

24. The method of any one of claims 14-23, wherein the first time-frequency resources comprise at least one of: a physical downlink control channel (PDCCH) monitoring occasion, a PDCCH search space, and a downlink control information (DCI) search region. a receiving module or a processing module; the receiving module or the processing module is configured to obtain first information; wherein the first information is used to indicate an association relationship between first time-frequency resources and transmission parameters of a first downlink shared channel, the first time-frequency resources are used to monitor a first downlink control channel or first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule an initial transmission or retransmission of the first downlink shared channel.

26. The apparatus of claim 25, wherein the association relationship between the first time-frequency resources and the transmission parameters of the first downlink shared channel comprises at least one of: the first time-frequency resources are located at a position of a specific demodulation reference signal (DMRS) of the first downlink shared channel; 25. A wireless communication device comprising: the first time-frequency resources are located at a position adjacent to a specific DMRS of the first downlink shared channel; the first time-frequency resources are specific time-frequency resources of the first downlink shared channel; a time-domain starting position of the first time-frequency resources is consistent with a time-domain starting position of the first downlink shared channel; and / or a time-domain ending position of the first time-frequency resources is consistent with a time-domain ending position of the first downlink shared channel. ​ ​ ​ ​ ​ a frequency domain starting position of the first time-frequency resource is consistent with a frequency domain starting position of the first downlink shared channel; the first time-frequency resource is located within time-frequency resources of the first downlink shared channel; the first time-frequency resource is located at a first time domain unit of the first downlink shared channel; the first time-frequency resource is located at a first time domain unit of the first downlink shared channel; the first time-frequency resource is located at a first time domain unit of the first downlink shared channel; the first time-frequency resource is located at a first time domain unit of the first downlink shared channel; the first time-frequency resource is located at a first time domain unit of the first downlink shared channel; the first time-frequency resource is located at a first time domain unit of the first downlink shared channel; the first time-frequency resource is located at a first time domain unit of the first downlink shared channel; a time domain starting position of the first time-frequency resource has a first offset between a time domain starting position or a time domain ending position of the first downlink shared channel; a frequency domain starting position of the first time-frequency resource has a second offset between a frequency domain starting position or a frequency domain ending position of the first downlink shared channel; a time domain ending position of the first time-frequency resource has a third offset between a time domain starting position or a time domain ending position of the first downlink shared channel; a frequency domain ending position of the first time-frequency resource has a fourth offset between a frequency domain starting position or a frequency domain ending position of the first downlink shared channel; wherein m and n are both positive integers.

27. The apparatus of claim 25 or 26, wherein, the processing module is further configured to determine whether the first time-frequency resource is mapped with the first downlink control channel or the first downlink control information.

28. The apparatus of claim 27, wherein, the processing module is specifically configured to: determine whether the first time-frequency resource is mapped with the first downlink control channel or the first downlink control information based on at least one of the following: an indication of a third downlink control channel or a third downlink control information; a result of blind detection of the first downlink control channel or the first downlink control information; a result of blind detection of the first downlink shared channel; a DMRS obtained by blind detection of the first downlink shared channel.

29. The apparatus of claim 27, wherein, in a case where the first downlink control channel or the first downlink control information is used to schedule a retransmission of the first downlink shared channel, if the wireless communication device correctly demodulates a first transmission or a last retransmission of the first downlink shared channel before the first time-frequency resource, the processing module is further configured to discard the first time-frequency resource, or the wireless communication device no longer monitors the first time-frequency resource.

30. The apparatus of any one of claims 25 to 29, wherein, the first downlink control channel or the first downlink control information is used to indicate at least one of the following: an increment or a decrement of time domain resources of the first downlink shared channel relative to a reference time-frequency resource; an increment or a decrement of frequency domain resources of the first downlink shared channel relative to a reference time-frequency resource; a quantity of basic time-frequency units occupied by the first downlink shared channel, wherein the basic time-frequency unit is P frequency domain units*Q time domain units, and P and Q are positive integers; a change amount of time-frequency resources of the first downlink shared channel relative to time-frequency resources of the first downlink shared channel in a previous period; time-frequency resources of the first downlink shared channel remain unchanged relative to time-frequency resources of the first downlink shared channel in a previous period; an index of a group of time-frequency resources corresponding to the first downlink shared channel in at least two groups of preconfigured time-frequency resources; a modulation and coding scheme (MCS) associated with the first downlink shared channel; a DMRS pattern associated with the first downlink shared channel; a multiple-input multiple-output (MIMO) layer associated with the first downlink shared channel; precoding information associated with the first downlink shared channel; hybrid automatic repeat request (HARQ) feedback information associated with the first downlink shared channel.

31. The apparatus of any one of claims 25-30, wherein the first information is further used to indicate whether the first downlink control channel or the first downlink control information is used to schedule retransmission of the first downlink shared channel.

32. An apparatus for wireless communication, comprising: a transmitting module configured to transmit first information to a terminal; wherein the first information is used to indicate an association relationship between first time-frequency resources and transmission parameters of a first downlink shared channel, and the first time-frequency resources are used to monitor a first downlink control channel or first downlink control information, and the first downlink control channel or the first downlink control information is used to schedule initial transmission or retransmission of the first downlink shared channel.

33. The apparatus of claim 32, wherein the association relationship between the first time-frequency resources and the transmission parameters of the first downlink shared channel comprises at least one of the following: the first time-frequency resources are located at a position of a specific demodulation reference signal (DMRS) of the first downlink shared channel; the first time-frequency resources are located at a position adjacent to a specific DMRS of the first downlink shared channel; the first time-frequency resources are specific time-frequency resources of the first downlink shared channel; a time domain starting position of the first time-frequency resources is consistent with a time domain starting position of the first downlink shared channel; a frequency domain starting position of the first time-frequency resources is consistent with a frequency domain starting position of the first downlink shared channel; the first time-frequency resources are located within time-frequency resources of the first downlink shared channel; the first time-frequency resources are located at a first time domain unit of the first downlink shared channel; the first time-frequency resources are located at a first m time domain units of the first downlink shared channel; the first time-frequency resources start at a specific time domain unit of the first downlink shared channel; the first time-frequency resources are located at a first frequency domain unit of the first downlink shared channel; the first time-frequency resources are located at a first n frequency domain units of the first downlink shared channel; the first time-frequency resources start at a specific frequency domain unit of the first downlink shared channel; a first offset between a time domain start position of the first time-frequency resource and a time domain start position or a time domain end position of the first downlink shared channel; a second offset between a frequency domain start position of the first time-frequency resource and a frequency domain start position or a frequency domain end position of the first downlink shared channel; a third offset between a time domain end position of the first time-frequency resource and a time domain start position or a time domain end position of the first downlink shared channel; a fourth offset between a frequency domain end position of the first time-frequency resource and a frequency domain start position or a frequency domain end position of the first downlink shared channel; wherein m and n are both positive integers.

34. The apparatus of claim 32 or 33, wherein, whether the first downlink control channel or the first downlink control information is mapped on the first time-frequency resource is determined based on at least one of: an indication of a third downlink control channel or a third downlink control information; a result of blind detection of the first downlink control channel or the first downlink control information; a result of blind detection of the first downlink shared channel; a DMRS acquired by blind detection of the first downlink shared channel.

35. The apparatus of any one of claims 32 to 34, wherein, the first downlink control channel or the first downlink control information is used to indicate at least one of: an increment or a decrement of time domain resources of the first downlink shared channel relative to a reference time-frequency resource; an increment or a decrement of frequency domain resources of the first downlink shared channel relative to a reference time-frequency resource; a number of basic time-frequency units occupied by the first downlink shared channel, wherein the basic time-frequency unit is P frequency domain units * Q time domain units, and P and Q are both positive integers; a change amount of time-frequency resources of the first downlink shared channel relative to time-frequency resources of the first downlink shared channel in a previous period; time-frequency resources of the first downlink shared channel remain unchanged relative to time-frequency resources of the first downlink shared channel in a previous period; an index of a group of time-frequency resources corresponding to the first downlink shared channel in at least two groups of preconfigured time-frequency resources; a modulation and coding scheme (MCS) associated with the first downlink shared channel; a DMRS pattern associated with the first downlink shared channel; a multiple-input multiple-output (MIMO) layer associated with the first downlink shared channel; precoding information associated with the first downlink shared channel; hybrid automatic repeat request (HARQ) feedback information associated with the first downlink shared channel.

36. The apparatus of any one of claims 32 to 35, wherein, the first information is further used to indicate whether the first downlink control channel or the first downlink control information is used to schedule a retransmission of the first downlink shared channel.

37. A terminal comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions, when executed by the processor, implement steps of the wireless communication method according to any one of claims 1 to 13. 38.A network-side device, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement the steps of the wireless communication method according to any one of claims 14 to 24. 39.A readable storage medium, the readable storage medium storing programs or instructions, the programs or instructions being executed by a processor to implement the wireless communication method according to any one of claims 1 to 13, or to implement the steps of the wireless communication method according to any one of claims 14 to 24.

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