CN114557080A

CN114557080A - Communication method and device

Info

Publication number: CN114557080A
Application number: CN201980101435.6A
Authority: CN
Inventors: 郭文婷; 苏宏家; 卢磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2022-05-27
Also published as: WO2021088091A1

Abstract

The application provides a communication method and device, which can be applied to the fields of V2X, Internet of vehicles, intelligent Internet of vehicles, auxiliary driving, intelligent driving and the like. The method comprises the following steps: the first terminal device may determine the first part and the second part of the data according to the first symbol and/or the first transmission resource for mapping the first control information, determine that the multiplexing order of the first part of the data in the first information is located before the second control information and the second part of the data, and then perform modulation coding, layer mapping, MIMO coding and resource mapping uniformly on the first information as a whole according to the time domain precedence order, and map the first information to the transmission resources except the first transmission resource in the scheduling unit.

Description

Communication method and device

Technical Field

The present application relates to the field of communications, and in particular, to a communication method and apparatus.

Background

Under a network of Long Term Evolution (LTE) technology proposed by the 3rd generation partnership project (3 GPP), a vehicle-to-anything communication (V2X) vehicle networking technology is proposed. V2X communication refers to communication between a vehicle and anything outside, and includes vehicle to vehicle communication (V2V), vehicle to pedestrian communication (V2P), vehicle to infrastructure communication (V2I), vehicle to network communication (V2N), and other application scenarios.

The conventional LTE V2X communication adopts a resource mapping method as shown in fig. 1. A once scheduled transmission resource includes one or a plurality of consecutive sub-channels (sub-channels) in the frequency domain and one subframe (subframe) in the time domain. A Physical Sidelink Control Channel (PSCCH) occupies two consecutive Resource Blocks (RBs) with the lowest sequence number in a frequency domain, and is used for transmitting control information, such as Sidelink Control Information (SCI); a physical downlink shared channel (psch) occupies the remaining RBs in a sub-channel in a Frequency Division Multiplexing (FDM) manner for transmitting data information (data). In this resource mapping scheme, the size of the physical resource occupied by the PSCCH channel is fixed, and one data transmission is accompanied by one control information transmission. The receiving end uses the sub-channel as the granularity in the whole frequency domain range to carry out blind detection on all possible control channels, and decodes the data channel according to the correctly decoded control information to obtain the data information.

In the NR V2X communication, the frame structure changes, and the length of the control information is variable to support more traffic types, so the above resource mapping method is no longer applicable.

Disclosure of Invention

Embodiments of the present application provide a communication method and apparatus, configured to provide channel multiplexing for different portions of second control information and data, so as to simplify operation complexity of resource mapping and improve data processing efficiency.

In a first aspect, a method of communication is provided. The method comprises the following steps: the first terminal device determines first control information, which is mapped on the first transmission resource in the scheduling unit. The first terminal device then determines the first information based on the first transmission resource, and/or the first symbol. The first information includes second control information, a first part of data and a second part, and the first part of data precedes the second part of data and the second control information in a multiplexing order in the first information. Then, the first terminal device maps the first information to transmission resources other than the first transmission resource in the scheduling unit, and sends the first control information and the first information to the second terminal device.

Based on the communication method provided by the first aspect, the first terminal device may determine the first part and the second part of the data according to the first symbol and/or the first transmission resource for mapping the first control information, determine that the multiplexing order of the first part of the data in the first information is located before the second control information and the second part of the data, and then uniformly perform modulation coding, layer mapping, MIMO coding and resource mapping on the first information as a whole according to the time domain precedence order, and map the first information to the transmission resources except the first transmission resource in the scheduling unit.

Wherein the first symbol is used for Automatic Gain Control (AGC). The first symbol may include one or more symbols positioned most forward in one scheduling unit. The first control information may include information indicating a size of a transmission resource occupied by the second control information, for example, an aggregation level of a second level control channel in which the second control information is located. The length of the second control information in the embodiment of the application may be variable, and the second control information may be sent with different code rates, and the first control information indicates the size of the transmission resource occupied by the second control information, so that the overhead of the second control channel may be reduced. In the present application, when the aggregation level of the second control channel is set to be 1, the second control channel occupies 18 Resource Elements (REs), that is, each 18 REs form one second control channel resource group, and when the second control channel adopts different aggregation levels, the number of resources used by the second control channel is an integer multiple of the 18 REs.

In one possible design method, the communication method according to the first aspect may further include: the first terminal device determines the second transmission resource. Wherein the second transmission resource may include at least one of: a transmission resource on a first symbol on a first layer in a scheduling unit, a transmission resource on the first layer in the scheduling unit that overlaps with the first transmission resource in a time domain and does not overlap in a frequency domain; or, the second transmission resource is located on the first symbol on the first layer in the scheduling unit, and the second transmission resource overlaps with the first transmission resource in the time domain and does not overlap with the first transmission resource in the frequency domain. It is easy to understand that the first part of the data may be data that can be mapped on the second transmission resource, so as to avoid resource waste and improve resource utilization.

Optionally, the second transmission resource does not overlap with a transmission resource on a time domain symbol in the scheduling unit, where the demodulation reference signal (DMRS) is mapped, in a time domain, so as to avoid interference, caused by the DMRS that performs power enhancement on the same time domain symbol, on the data that performs power reduction, thereby ensuring reliability of data transmission.

In a possible design method, the multiplexing order of the second control information in the first information is located before the second part of the data, which can effectively reduce the decoding delay of the second control information.

Optionally, when the first condition is satisfied, the multiplexing order of the second control information in the first information precedes the second portion of the data. Wherein the first condition may be: not performing power enhancement on the first control information; or performing power enhancement on the first control information and not performing power enhancement on the demodulation reference signal DMRS; or, power enhancement is performed on the first control information and the demodulation reference signal DMRS, and data is not mapped on a time domain symbol on which the DMRS is mapped.

In another possible design method, the communication method according to the first aspect may further include: the first terminal equipment determines to perform power enhancement on the first control information and the demodulation reference signal DMRS, maps data on a time domain symbol for mapping the DMRS, and determines a time domain symbol for mapping the DMRS in third transmission resources, wherein the third transmission resources are not overlapped with the first transmission resources and the second transmission resources on a first layer time domain in a scheduling unit. Then, the first terminal device determines a multiplexing order of the second control information and the second part of the data in the first information according to the time domain symbol mapped with the DMRS in the third transmission resource.

In a possible design method, the mapping, by the first terminal device, the first information to a transmission resource other than the first transmission resource in the scheduling unit may include: and the first terminal equipment maps the first information to the transmission resources except the first transmission resource in the scheduling unit according to the sequence of the frequency domain first and the time domain second.

In a second aspect, an embodiment of the present application provides a communication apparatus having a function of implementing the first terminal device in the first aspect or any one of the possible designs of the first aspect. The communication device may be a terminal device, such as a handheld terminal device, a vehicle-mounted terminal device, a vehicle user device, or the like, or may be a device included in a terminal device, such as a chip, or may be a device including a terminal device. The functions of the terminal device may be implemented by hardware, or may be implemented by hardware executing corresponding software, where the hardware or software includes one or more modules corresponding to the functions.

In one possible design, the communication apparatus structurally includes a processing module and a transceiver module, where the processing module is configured to support the communication apparatus to perform a function corresponding to the first terminal device in the first aspect or any one of the first aspect designs. The transceiver module is configured to support communication between the communication apparatus and other communication devices, for example, when the communication apparatus is a first terminal device, the transceiver module may send first control information and first information to a second terminal device. The communication device may also include a memory module, coupled to the processing module, that stores program instructions and data necessary for the communication device. As an example, the processing module may be a processor, the communication module may be a transceiver, the storage module may be a memory, and the memory may be integrated with the processor or disposed separately from the processor, which is not limited in this application.

In another possible design, the communication device may be configured to include a processor and may also include a memory. The processor is coupled to the memory and is operable to execute computer program instructions stored in the memory to cause the communication device to perform the method of the first aspect described above or any of the possible designs of the first aspect. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface. When the communication device is a terminal device, the communication interface may be a transceiver or an input/output interface; when the communication means is a chip included in the terminal device, the communication interface may be an input/output interface of the chip. Alternatively, the transceiver may be a transmit-receive circuit and the input/output interface may be an input/output circuit.

It should be noted that, for technical effects of the communication apparatus according to the second aspect, reference may be made to technical effects of the communication method according to the first aspect, and details are not described here.

In a third aspect, an embodiment of the present application provides a chip system, including: a processor coupled to a memory for storing programs or instructions, the system-on-chip further comprising an interface circuit for receiving code instructions and transmitting to the processor; the program or instructions, when executed by the processor, cause the system-on-chip to implement the method of the first aspect or any of the possible designs of the first aspect.

Optionally, the system on a chip may have one or more processors. The processor may be implemented by hardware or by software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory.

Optionally, the memory in the system-on-chip may also be one or more. The memory may be integrated with the processor or may be separate from the processor, which is not limited in this application. For example, the memory may be a non-transitory processor, such as a read only memory ROM, which may be integrated with the processor on the same chip or separately disposed on different chips, and the type of the memory and the arrangement of the memory and the processor are not particularly limited in this application.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having computer-readable instructions stored thereon, which, when read and executed by a computer, cause the computer to perform the method of the first aspect or any one of the possible designs of the first aspect, or the method of the second aspect, the fourth aspect, or the sixth aspect.

In a fifth aspect, embodiments of the present application provide a computer program product, which when read and executed by a computer, causes the computer to perform the method of the first aspect or any one of the possible designs of the first aspect.

In a sixth aspect, an embodiment of the present application provides a communication system, which includes the above first terminal device and second terminal device. Optionally, the communication system may further include a network device.

Drawings

Fig. 1 is a schematic diagram of a resource mapping manner of LTE V2X;

fig. 2 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 3 is a schematic flowchart of a communication method according to an embodiment of the present application;

fig. 4 is a schematic diagram of a frame structure one of a scheduling unit according to an embodiment of the present application;

fig. 5 is a first schematic view of resource distribution based on the first frame structure shown in fig. 4 according to an embodiment of the present application;

fig. 6 is a schematic resource distribution diagram ii based on the frame structure i shown in fig. 4 according to an embodiment of the present application;

fig. 7 is a schematic diagram of resource distribution based on the frame structure one shown in fig. 4 according to an embodiment of the present application;

fig. 8 is a schematic diagram of a data structure of first information provided in an embodiment of the present application;

fig. 9 is a schematic diagram of resource distribution based on the frame structure one shown in fig. 4 according to an embodiment of the present application;

fig. 10 is a schematic diagram of resource distribution based on the frame structure one shown in fig. 4 according to an embodiment of the present application;

fig. 11 is a sixth schematic view of resource distribution based on the frame structure one shown in fig. 4 according to an embodiment of the present application;

fig. 12 is a schematic flowchart of processing second control information and data according to an embodiment of the present application;

fig. 13 is a schematic diagram of a frame structure two of a scheduling unit according to an embodiment of the present application;

[ amendment 13.11.2019 according to rules 91 ] FIG. 14 is a first schematic diagram of resource distribution based on the frame structure II shown in FIG. 13 according to an embodiment of the present application;

[ amendment 13.11.2019 according to rules 91 ] FIG. 15 is a first schematic diagram of resource distribution based on the frame structure II shown in FIG. 13 according to an embodiment of the present application;

fig. 16 is a first schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 17 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS), Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), Worldwide Interoperability for Microwave Access (WIMAX) communication systems, fifth generation (5G) or new NR systems, etc., or other similar communication systems applied to future communications.

The technical scheme of the embodiment of the application can be applied to unmanned driving (unmanned driving), Assisted Driving (ADAS), Intelligent driving (Intelligent driving), Internet driving (connected driving), Intelligent Internet driving (Intelligent network driving), automobile sharing (car sharing), Intelligent automobile (smart/interactive car), digital automobile (digital car), unmanned automobile (unmanned car/dynamic car/pilot car/autonomous mobile), Internet networking (Internet networking, IoV), automatic automobile (self-driving car, autonomous car), road coordination (cooperative information architecture, CVIS), Intelligent transportation (Intelligent transportation, system communication, and the like).

In addition, the technical solution provided in the embodiment of the present application may be applied to a cellular link, and may also be applied to a link between devices, for example, a device to device (D2D) link. The D2D link or the V2X link may also be referred to as a side link, a secondary link, a sidelink, or the like. In the embodiments of the present application, the above terms all refer to links established between devices of the same type, and have the same meaning. The devices of the same type may be links from the terminal device to the terminal device, links from the base station to the base station, links from the relay node to the relay node, and the like, which are not limited in this embodiment of the present application. For the link between the terminal device and the terminal device, there is a D2D link defined by release (Rel) -12/13 of 3GPP, and also a vehicle-to-vehicle, vehicle-to-handset, or vehicle-to-any entity V2X link defined by 3GPP for the internet of vehicles, including Rel-14/15. But also the Rel-16 and subsequent releases of NR system based V2X link currently under investigation by 3 GPP.

Please refer to fig. 2, which is a schematic diagram of a network architecture of a communication system according to an embodiment of the present application. The communication system includes a first terminal device and a second terminal device. The terminal equipment and the terminal equipment can be in direct communication through a PC5 interface, and a direct communication link between the terminal equipment and the terminal equipment is a sidelink. The sidelink-based communication may use at least one of the following channels: a physical sidelink shared channel (psch) for carrying data (data); a Physical Sidelink Control Channel (PSCCH) for carrying Sidelink Control Information (SCI).

Optionally, the communication system further comprises a network device (not shown in fig. 2) for providing timing synchronization and resource scheduling for the terminal device. The network device may communicate with at least one terminal device (e.g., a first terminal device) via a Uu interface. The communication link between the network device and the terminal device includes an Uplink (UL) and a Downlink (DL). The terminal device and the terminal device may also implement indirect communication through forwarding of the network device, for example, the first terminal device may send data to the network device through the Uu interface, send the data to the application server through the network device for processing, then the application server issues the processed data to the network device, and send the processed data to the second terminal device through the network device. In a communication mode based on the Uu interface, the network device that forwards the uplink data from the first terminal device to the application server and the network device that forwards the downlink data sent by the application server to the second terminal device may be the same network device or different network devices, and may be determined by the application server.

The network device in fig. 2 may be an access network device, such as a base station. The access network device corresponds to different devices in different systems, for example, in a 5G system, the access network device in 5G, for example, the gNB. Although only the first terminal device and the second terminal device are shown in fig. 2, it should be understood that the network device may provide services for a plurality of terminal devices, and the number of terminal devices in the communication system is not limited in the embodiments of the present application. Similarly, the terminal device in fig. 2 is illustrated by taking an on-board terminal device or a vehicle as an example, and it should be understood that the terminal device in the embodiment of the present application is not limited thereto, and the terminal device may also be an on-board module, a road side unit, or a pedestrian handheld device. It should be understood that the embodiments of the present application are not limited to the 4G or 5G system, and are also applicable to a communication system of a subsequent evolution.

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1) Terminal device

A terminal device, which may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user. The terminal device may communicate with a core network via a Radio Access Network (RAN), and exchange voice and/or data with the RAN. For example, the terminal device may be a handheld device, an in-vehicle device, a vehicle user device, or the like, having a wireless connection function. Currently, some examples of terminal devices are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (smart security), a wireless terminal in city (smart city), a wireless terminal in home (smart home), and the like. The terminal device in the embodiment of the present application may also be an on-board module, an on-board component, an on-board chip, or an on-board unit that is built in the vehicle as one or more components or units, and the vehicle may implement the method of the present application through the built-in on-board module, the on-board component, the on-board chip, or the on-board unit.

2) Network device

A network device is a device in a network for accessing a terminal device to a wireless network. The network device may be a node in a radio access network, which may also be referred to as a base station, and may also be referred to as a Radio Access Network (RAN) node (or device). The network device may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved Node B (NodeB or eNB or e-NodeB) in a Long Term Evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-a), such as a conventional macro base station eNB and a micro base station eNB in a heterogeneous network scenario, or may also include a next generation Node B (gNB) in a fifth generation mobile communication technology (5th generation, 5G) New Radio (NR) system, or may also include a Transmission Reception Point (TRP), a home base station (e.g., home evolved Node B, home Node B), a Base Band Unit (BBU), a BBU point, or a WiFi Access Point (AP), and the like, or may also include a centralized access point (cloud access point) in a cloud access network (cloud access network, CU) and Distributed Unit (DU), embodiments of the present application are not limited. As another example, one type of network device in V2X technology is a Road Side Unit (RSU), which may be a fixed infrastructure entity supporting V2X applications and may exchange messages with other entities supporting V2X applications.

3) Two-stage control channel and data channel

In the embodiment of the present application, there are two types of control information, the first control information and the second control information. Correspondingly, two levels of control channels exist in one scheduling unit, and are respectively used for carrying the first control information and the second control information. The scheduling unit refers to a set of resources scheduled for one-time data transmission. One scheduling unit may include one or more continuous sub-channels (sub-channels) in the frequency domain, and one sub-channel may include several Resource Blocks (RBs) that are continuous in the frequency domain. A scheduling unit may include one or more time units in the time domain, and the time units may be time units formed by time slots, micro-slots, subframes, frames, and the like, with various possible time granularities. It should be understood that the bandwidth of the scheduling unit is not particularly limited in the embodiments of the present application, and the number of sub-channels included in the scheduling unit and the size of each sub-channel may be configured or preconfigured by the network device.

The first control information is applicable to broadcast, unicast, multicast, and other scenarios, and may be basic control information required for V2X communication, for example, the first control information may include a destination user id (destination identity) of layer L1, a frequency domain bandwidth of a data channel, resource reservation information, an initial transmission time interval, and a retransmission time interval. The first control information is carried on a first stage control channel, which may be, for example, a first stage PSCCH channel.

The second control information is suitable for unicast, multicast and other scenes, and can be additional link maintenance information required in the unicast, multicast and other scenes to improve the reliability of the link. For example, the second control information may include a Modulation and Coding Scheme (MCS) of the data channel, a hybrid automatic repeat request (HARQ) version number of the data channel, and a new transmission or retransmission indication. The second control information is carried on a second level control channel, which may be, for example, a second level PSCCH channel. It should be understood that in a broadcast scenario, the first terminal device may only send the first control information to the second terminal device; in unicast and multicast scenarios, a first terminal device needs to send first control information and second control information to a second terminal device.

The data may be specific service data sent by the first terminal device to the second terminal device in a broadcast, unicast, multicast, or other scenario. Data is carried on a data channel in the scheduling unit, which may be, for example, a PSSCH channel. For example, if the first terminal device and the second terminal device are both vehicles, the first terminal device may send some information of itself, such as position, speed, intention (including turning, merging, reversing), posture (such as ascending slope, descending slope) and the like, to the second terminal device.

It should be noted that the terms "system" and "network" in the embodiments of the present application may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present application. "at least one" is to be understood as meaning one or more, for example one, two or more. For example, the inclusion of at least one means that one, two or more are included, and does not limit which is included. For example, at least one of A, B and C is included, then inclusion can be A, B, C, A and B, A and C, B and C, or A and B and C. Similarly, the understanding of the description of "at least one" and the like is similar. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

Unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing between a plurality of objects, and do not define the order, sequence, priority, or importance of the plurality of objects, and the descriptions of "first", "second", etc., do not define that the objects are necessarily different.

Fig. 3 is a first flowchart illustrating a communication method according to an embodiment of the present application. The communication method is suitable for the communication system shown in fig. 2, and realizes communication between the first terminal device and the second terminal device.

As shown in fig. 3, the method includes S301 to S304:

s301, the first terminal device determines first control information. Wherein the first control information is mapped on the first transmission resource in the scheduling unit.

Exemplarily, fig. 4 is a schematic diagram of a frame structure one of a scheduling unit adopted in an embodiment of the present application, and fig. 4 only shows a first-level control channel and a data channel. In section a shown in fig. 4, the primary control channel and the data channel are mapped on all symbols of section a in a frequency division multiplexing manner, and only the data channel exists in section B shown in fig. 4 without the primary control channel. The resource mapped with the first control information in the scheduling unit is the first transmission resource, and may be preconfigured by the network device.

Exemplarily, fig. 5 to fig. 7 are schematic diagrams of first to third resource distribution based on the frame structure one shown in fig. 4 according to the embodiment of the present application. In fig. 5 to 7, one scheduling unit includes one slot in the time domain, the slot including 14 time domain symbols, the 14 used symbols being numbered 0 to 13 in sequence from left to right, and 10 RBs in the frequency domain, the 10 RBs being numbered 0 to 9 in sequence from top to bottom.

As shown in fig. 5 to fig. 7, the scheduling unit may be divided into a part a and a part B from the time domain by taking the time domain position of the last symbol included in the first transmission resource (i.e. the time domain end position of the first transmission resource) as a boundary.

In the time domain, the first transmission resource may occupy part or all of the time domain resources of the a portion. In the frequency domain, the first transmission resource occupies a part of the frequency domain resources in the scheduling unit. The resource size of the first transmission resource is usually fixed, and may be represented as a rectangle composed of a plurality of resource blocks in one scheduling unit in the illustration.

It should be understood that the frequency domain starting resource block of the first transmission resource may be the same as or different from the frequency domain starting resource block of the scheduling unit, and the application is not limited thereto. That is, the first transmission resource may include the uppermost 0-numbered resource block in the scheduling unit, or may not include the uppermost 0-numbered resource block in the scheduling unit. Alternatively, it is also understood that the first transmission resource may or may not be aligned with the frequency domain starting position of the scheduling unit.

It should also be understood that the first transmission resource may or may not include a resource on the first symbol in the scheduling unit. For example, as shown in fig. 5, if the influence of Automatic Gain Control (AGC) on the control channel is not considered, the first transmission resource may include a resource on a first symbol in the scheduling unit, that is, the first control information may be mapped to the resource of the first symbol in the scheduling unit, or it may also be understood that the first-level control channel may start mapping from the first symbol in the scheduling unit.

For another example, as shown in fig. 6, if the influence of AGC on the control channel is considered, the first transmission resource may not include the resource on the first symbol in the scheduling unit, and the first control information may avoid the first symbol in the scheduling unit and start mapping from the second symbol in the scheduling unit, or may be understood as that the first-level control channel avoids the first symbol in the scheduling unit and starts mapping from the second symbol in the scheduling unit.

For another example, as shown in fig. 7, there is an AGC sequence in the scheduling unit, and the AGC sequence is mapped on all resource blocks on the first symbol in the scheduling unit. In this case, the first transmission resource may not include a resource on a first symbol in the scheduling unit, and the first control information may avoid the first symbol in the scheduling unit and start mapping from a second symbol in the scheduling unit, or may be understood as a first level control channel that avoids the first symbol in the scheduling unit and starts mapping from the second symbol in the scheduling unit.

S302, the first terminal device determines first information according to the first transmission resource and/or the first symbol.

Illustratively, the first symbol is used for automatic gain control AGC. The first symbol may comprise a time domain symbol carrying an AGC sequence in a scheduling unit, such as one or more time domain symbols (symbols) positioned most forward in the scheduling unit. The AGC sequence refers to data for implementing automatic gain control at a receiving end, and may be an AGC sequence generated according to a specified method, such as a pseudo random sequence, or may be data. That is, data may or may not be mapped on the first symbol.

It is easy to understand that, in the first symbol transmission process, the channel attenuation between the transmitting end and the receiving end is unknown, and the receiving end cannot perform gain adjustment on the received wireless signal, so that the quality of the received wireless signal is poor. Therefore, in the embodiment of the present application, the second control information may not be mapped on the first symbol, so as to ensure the transmission reliability of the second control information.

In addition, in the embodiment of the present application, considering that the total transmission power is required to be the same for all symbols in one transmission slot when data transmission is performed by using the sidelink, in the part a shown in fig. 4, since the first control information and the data exist at the same time, if the power of the first-level control information is enhanced, the average transmission power of the data on each symbol in the part a is lower than that of the data on each symbol in the part B. The average transmission power of the data may be: average transmit power per RB, or average transmit power per RE, over one data-carrying symbol. Therefore, the second control information and the data can be mapped to the data channel of the part B uniformly after channel multiplexing, so that the second control information can obtain higher transmission power, thereby enhancing the reliability.

Referring to fig. 5 to 7, to ensure reliability, the second control information may avoid the first symbol and/or the symbol to which the first control information is mapped, and to avoid resource waste, the first portion of the data may be mapped to the first symbol and/or the transmission resource to which the first control information is mapped, and the second control information and the second portion of the data may be mapped to the remaining transmission resource in the scheduling unit. Exemplarily, fig. 8 is a schematic structural diagram of first information provided in an embodiment of the present application. As shown in fig. 8, the first information includes the second control information, the first part of the data and the second part at the same time, and the multiplexing order of the first part of the data in the first information precedes the second part of the data and the second control information.

The first information may also be understood as an information bit stream obtained by the first terminal device concatenating the second control information, the first part of the data and the second part of the data, wherein the first part of the data is concatenated before the second control information and the second part of the data. Thus, in this embodiment of the present application, the determining, by the first terminal device, the first information according to the first transmission resource and/or the first symbol may include: the first terminal equipment respectively determines second control information and data, then determines a first part and a second part of the data according to the first transmission resource and/or the first symbol, and then the first terminal equipment concatenates the first part of the data before the second control information and the second part of the data to obtain the first information.

In this embodiment, the data amount of the first part of the data may be determined according to the number of idle resources on the first symbol and/or the symbol on which the first control information is mapped. Therefore, in one possible design approach, the communication method shown in fig. 3 may further include: the first terminal device determines the second transmission resource.

Wherein the second transmission resource may include at least one of: the transmission resource on the first symbol on the first layer in the scheduling unit, the transmission resource on the first layer in the scheduling unit overlapping with the first transmission resource in the time domain and not overlapping in the frequency domain. Accordingly, the first portion of data may be data that can be mapped on the second transmission resource.

Illustratively, as shown in fig. 5, the second transmission resource may include only transmission resources on the first layer in the scheduling unit that overlap with the first transmission resource in the time domain and do not overlap in the frequency domain. For example, in the time domain, the second transmission resource may occupy part or all of the time domain symbols of the a portion on the first layer in the scheduling unit, and in the frequency domain, the second transmission resource is frequency division multiplexed with the first transmission resource. That is, in the case of performing power enhancement on the first control information, if the part a does not include the first symbol, or the part a includes the first symbol and does not map the first symbol with the time data, the second control information only needs to avoid the first control information, that is, the second transmission resource may only include the transmission resource on the first layer in the scheduling unit that overlaps with the first transmission resource in the time domain and does not overlap with the first transmission resource in the frequency domain.

Illustratively, as shown in fig. 6, the second transmission resource may also include only the transmission resource on the first symbol on the first layer in the scheduling unit. For example, in the time domain, the second transmission resource may include part or all of the time domain resources in the first symbol on the first layer in the scheduling unit, and in the frequency domain, the second transmission resource may include part or all of the frequency domain resources in the first symbol on the first layer in the scheduling unit. That is, without power enhancing the first control information, if the part a includes the first symbol and the data is mapped on the first symbol, the second control information only needs to avoid the first symbol, i.e. the second transmission resource may only include the transmission resource on the first symbol on the first layer in the scheduling unit. In this case, the second control information may be mapped on a transmission resource that overlaps with the first transmission resource in a time domain and does not overlap in a frequency domain.

Exemplarily, in conjunction with fig. 5 and fig. 6, as shown in fig. 7, the second transmission resource may further include a transmission resource on the first layer in the scheduling unit that overlaps with the first transmission resource in the time domain and does not overlap in the frequency domain, and a transmission resource on the first symbol on the first layer in the scheduling unit at the same time. In the case of performing power enhancement on the first control information, if the part a includes the first symbol and the data is mapped on the first symbol, the second control information needs to avoid the first control information and the first symbol at the same time, that is, the second transmission resource includes both a transmission resource on the first layer in the scheduling unit, which overlaps with the first transmission resource in the time domain and does not overlap with the first transmission resource in the frequency domain, and a transmission resource on the first symbol on the first layer in the scheduling unit. In this case, the second control information may be mapped on a transmission resource that is not overlapped with the part a in the time domain and is overlapped with the part B in the frequency domain, that is, a transmission resource of the part B.

Further, the multiplexing order of the second control information and the second part of the data in the first information may also be determined according to the occupation situation of the transmission resources except the first transmission resource and the second transmission resource in the scheduling unit. In one possible design approach, the multiplexing order of the second control information in the first information may precede the second portion of the data to reduce the decoding delay of the second control information.

Exemplarily, fig. 9 to 11 are schematic resource distribution diagrams four to six based on the frame structure one shown in fig. 4 according to the embodiment of the present application. Referring to fig. 5 to 7, as shown in fig. 9 to 11, on the first layer in the scheduling unit, the third transmission resource includes transmission resources other than the first transmission resource and the second transmission resource. When the scheduling unit includes a plurality of layers, on a first layer in the scheduling unit, the third transmission resource includes a transmission resource other than the first transmission resource and the second transmission resource; on other layers in the scheduling unit, the third transmission resource includes transmission resources other than the first transmission resource and the transmission resource on the first symbol.

Fig. 12 is a schematic flowchart of a process performed by the first terminal device on the second control information and the data according to an embodiment of the present disclosure, where the entire process includes steps of channel coding, channel multiplexing, scrambling, layer mapping, multiple-input multiple-output (MIMO) coding, resource mapping, Inverse Fast Fourier Transform (IFFT), Cyclic Prefix (CP), and the like. Wherein. The determination of the first information by the first terminal device based on the first transmission resource, and/or the first symbol occurs in the step of channel multiplexing shown in fig. 12, where the channel multiplexing refers to multiplexing of the first part of the data with the second part of the second level control channel and the data.

Specifically, in the channel coding step shown in fig. 12, the first terminal device may perform channel coding on the second control information and the data, where the output of the channel coding is output after rate matching, and the channel coding process may include Cyclic Redundancy Check (CRC) addition of a transport block, coding block segmentation, coding block CRC addition, channel coding, rate matching, and so on, and will not be described in detail herein.

In the step of channel multiplexing, the first terminal device may divide the output of the data after channel coding into a first part and a second part, and then channel-multiplex the first part of the data, the output of the second control information after channel coding, and the second part of the data, and multiplex the first part of the data and the second control information between the output of the second control information after channel coding and the second part of the data, or may understand that the first part of the data, the output of the second control information after channel coding, and the second part of the data are concatenated, and the first part of the data is concatenated before the output of the second control information after channel coding and the second part of the data. The following description refers to fig. 5 to 7.

Referring to fig. 5, in the case that part a does not include the first symbol, or part a includes the first symbol, and no data is mapped on the first symbol, it is assumed that the number of time domain symbols to which the first control information is mapped is L, and the symbol number may be 1, 2, …, L, or is 0,1, …, L-1, that is, the symbol number of the last time domain symbol of part a may be L or L-1, the value of L ranges from 1 to 13, and the most possible value is 2 or 3.

The number of resources available for mapping data in part a, i.e. the number of resources comprised by the second transmission resource, is first determined. Wherein the resource to which data can be mapped is the number of REs except for the REs to which the DMRS is mapped in the a part. If the value is K, the length of the mappable coded information bits on the second transmission resource is K × Qm, Qm is the modulation order, and the value can be 2, 4, 6, etc. Assume that the data channel has a bandwidth of M_PSSCHA plurality of RBs, for example, the time domain symbol occupied by the first-stage control channel is 1, 2, …, and L, and the frequency domain bandwidth of the first-stage control channel is M_PSCCHAnd one RB. If part A has DMRS of data channel, the total number of REs occupied by DMRS is L_PSSCH-DMRSThen the value of K may be:

K＝M _PSSCH*12*L-M _PSCCH*L*12-L _PSSCH-DMRS。

if the DMRS of the data channel does not exist in part a, the K value may be:

K＝M _PSSCH*12*L-M _PSCCH*L*12。

then, assume that the coded output of the second level control channel is represented as

The data channel coded output is represented as

And the multiplexing order for the second control information is before the second part of the data, the output after the concatenation of the two can be represented as g₀,g ₁,g ₂,…,g _G-1Wherein G ═ L_2nd-SCI+M _data. Wherein the content of the first and second substances,

when i is more than or equal to 0 and less than K Q_mWhen g is_i＝f _i；

When K is Q_m≤i＜K*Q _m+L _2nd-SCIWhen the temperature of the water is higher than the set temperature,

when K is Q_m+L _2nd-SCIWhen i is not less than or equal to G-1,

wherein i is more than or equal to 0 and less than G. Wherein L is_2nd-SCIThe number of coded bits, M, output after channel coding for the second control information_dataThe total number of coded bits output after channel coding the data.

Referring to fig. 6, in case that the first control information is not power-enhanced, assuming that the part a includes a first symbol, and the first symbol is mapped with data, the first symbol includes N symbols, the symbol number may be 1, 2, …, N-1, and N is 1 or 2, the second transmission resource includes resources of which the number is NThe number K being M_PSSCH*12*N。

If the output of the second control information after channel coding is expressed as

The output of the data after channel coding is represented as

And the multiplexing order for the second control information is before the second part of the data, the output of the second control information after channel coding and the output of the data after channel coding are concatenated may be represented as g₀,g ₁,g ₂,…,g _G-1。

Wherein G ═ L_2nd-SCI+M _data，

When i is more than or equal to 0 and less than K Q_mWhen g is_i＝f _i；

when K is Q_m+L _2nd-SCIWhen i is less than or equal to G,

wherein L is_2nd-SCIThe number of coded bits, M, output after channel coding for the second control information_dataThe total number of coded bits output after channel coding the data.

Referring to fig. 7, it is assumed that the part a includes a first symbol on which data is mapped and the first control information is power-enhanced. The first symbol is N symbols, and the time domain symbols to which the first control information is mapped are L symbols.

The number of resources available for mapping data in part a, i.e. the number of resources comprised by the second transmission resource, is first determined. Wherein the resource to which data can be mapped is the number of REs except for the REs to which the DMRS is mapped in the a part. Assume that the data channel has a bandwidth of M_PSSCHA RB, taking the time domain symbols occupied by the first control information as N +1, N +2, …, N + L as an example, and the frequency domain bandwidth of the transmission resource occupied by the first control information is M_PSCCHAnd (4) one RB. If part A has DMRS of data channel, the total number of REs occupied by DMRS is L_PSSCH-DMRSThen, the first and second images are combined,

K＝M _PSSCH*12*(L+N)-M _PSCCH*L*12-L _PSSCH-DMRS。

if the DMRS for the data channel does not exist for part a, then,

K＝M _PSSCH*12*(L+N)-M _PSCCH*L*12。

The data channel coded output is represented as

And the multiplexing order for the second control information is before the second part of the data, the output after the concatenation of the two can be represented as g₀,g ₁,g ₂,…,g _G-1Wherein G ═ L_2nd-SCI+M _data. And the number of the first and second electrodes,

when i is more than or equal to 0 and less than K Q_mWhen g is_i＝f _i；

when K is Q_m+L _2nd-SCIWhen i is not less than or equal to G-1,

The purpose of the embodiments described in fig. 5 and fig. 6 is to map the second control information to other time-frequency resources except the first symbol. This embodiment has other possibilities of implementation, i.e. the first part of the data is 0 in length. For example, assume that the coded output of the second level control channel is represented as

The data channel coded output is represented as

And the multiplexing order for the second control information is located before the data, the output of the two after concatenation can be represented as g₀,g ₁,g ₂,…,g _G-1Wherein G ═ L_2nd-SCI+M _data. And, when 0 is less than or equal to i<L _2nd-SCIWhen g is_i＝q _i(ii) a When L is_2nd-SCI≤i<G is G, G_i＝f _i. Designing a data stream g if the first control channel has no power enhancement and the first symbol does not map data_iAnd sequentially mapping the data subjected to symbol modulation, layer mapping and MIMO coding in each layer from the available resources of the part A in a frequency domain and then a time domain. Designing a data stream g if the first symbol can map data_iModulated by symbolsAfter the data after layer mapping and MIMO coding is sequentially mapped from the available resources of the part A of each layer in the frequency domain and the time domain, the resources of the first symbol are mapped in the frequency domain and the time domain.

S303, the first terminal device maps the first information to transmission resources except the first transmission resource in the scheduling unit.

The following describes a process of the first terminal device mapping the first control information to the first transmission resource and mapping the first information to the second transmission resource and the third transmission resource in detail.

With reference to fig. 9 to 11, as shown in fig. 12, before mapping the first information to the second transmission resource and the third transmission resource, the first terminal device may further perform channel coding on the second control information and the data, and then multiplex the first part and the second part, which are obtained by segmenting the output of the second control information after being coded and the output of the data after being channel coded, together to obtain the first information, and further perform layer mapping, MIMO coding, and resource mapping on the first information in a unified manner.

In the embodiment of the present application, when performing resource mapping, the first terminal device may adopt a way of mapping in an increasing order after a frequency domain. Taking the first information as an example, starting from a first symbol included in the second transmission resource, sequentially mapping the first information to each resource block on the symbol according to the sequence of the numbers of the resource blocks from small to large until all the resource blocks on the symbol are mapped, and then mapping the next symbol. And on the next symbol, sequentially mapping the first information to each resource block on the symbol according to the sequence of the number of the resource blocks from small to large until all the resource blocks on the symbol are mapped. And the analogy is repeated until the first information is mapped to all symbols included in the second transmission resource and the third transmission resource.

It should be noted that, when the scheduling unit includes multiple layers, the first terminal preferentially maps the first information to the transmission resource on the first layer. That is, the first terminal preferentially maps the first portion of the data to the second transmission resource and then maps the second control information to the third transmission resource. Further, in order to reduce the decoding delay of the second control information, the second control information may be preferentially mapped to the third transmission resource, that is, the second control information is preferentially mapped on the first layer.

S304, the first terminal device sends the first control information and the first information to the second terminal device.

S305, the second terminal device receives the first control information and the first information from the first terminal device.

In S301 to S305, only the channel multiplexing method of frame format one for the scheduling unit shown in fig. 4 is described. The communication method provided by the present application may also be directed to channel multiplexing of frame format two of the scheduling unit shown in fig. 13. The following is a detailed description.

According to rules 91, amend 13.11.2019, for example, fig. 13 is a schematic diagram of a frame structure two of a scheduling unit provided in the embodiment of the present application, and only a first-level control channel and a data channel are shown in fig. 13. In fig. 13, the first level control channel and the data channel are mapped on all the time domain resources of the part a in a frequency division multiplexing manner, and in fig. 13, the part B only has the data channel and no first level control channel. The resource mapped with the first control information in the scheduling unit is the first transmission resource, and may be preconfigured by the network device.

Fig. 14 is a schematic view of resource distribution based on the frame structure two shown in fig. 13 according to an exemplary embodiment of the present application, where the resource distribution is modified 13.11.2019 according to rules 91. In fig. 14, one scheduling unit includes one slot in the time domain, the slot includes 14 time domain symbols, the 14 used symbols are numbered 0 to 13 sequentially from left to right, and 8 RBs are numbered 0 to 7 sequentially from top to bottom in the frequency domain.

As shown in fig. 14, the scheduling unit may be divided into a part a and a part B from the frequency domain with the frequency domain position of the last RB included in the first transmission resource (i.e., the frequency domain end position of the first transmission resource) as a boundary.

In the time domain, the first transmission resource may occupy all time domain resources of the scheduling unit. In the frequency domain, the first transmission resource occupies a part of the frequency domain resources in the scheduling unit. The resource size of the first transmission resource is usually fixed, and may be represented as a rectangle composed of a plurality of resource blocks in one scheduling unit in the illustration.

It should also be understood that the first transmission resource may or may not include the resource on the first symbol in the scheduling unit. For example, as shown in fig. 14, if the influence of AGC on the first-level control channel is not considered, the first transmission resource may include a resource on the first symbol in the scheduling unit, that is, the first control information may be mapped to the first symbol in the scheduling unit, or it may be understood that the first-level control channel may be mapped from the first symbol in the scheduling unit.

For another example, as shown in fig. 14, if the influence of AGC on the control channel is considered, the first transmission resource may not include the resource on the first symbol in the scheduling unit, and the first control information may avoid the first symbol in the scheduling unit and start mapping from the second symbol in the scheduling unit, or may be understood as that the first-level control channel avoids the first symbol in the scheduling unit and starts mapping from the second symbol in the scheduling unit.

Comparing fig. 13 and fig. 14 with fig. 4 and fig. 6, respectively, it can be seen that the first transmission resource corresponding to the frame format two is different from the first transmission resource corresponding to the frame format one, so that the determination method of the second transmission resource and the calculation method of the K value are also different, and other processing flows are the same as the frame format one. That is, for frame format two, the second transmission resource is located on the first symbol on the first layer in the scheduling unit, and the second transmission resource overlaps with the first transmission resource in the time domain and does not overlap in the frequency domain. This will be described in detail with reference to fig. 14.

Exemplarily, in connection with fig. 13, as shown in fig. 14, the second transmission resource includes only the transmission resource on the first symbol on the first layer in the scheduling unit. For example, in the time domain, the second transmission resource may include part or all of the time domain resource in the first symbol on the first layer in the scheduling unit, and in the frequency domain, the second transmission resource may include part of the frequency domain resource in the first symbol on the first layer in the scheduling unit. That is, for frame format two, if part a includes the first symbol and the data is mapped on the first symbol, the second control information may avoid the first symbol, i.e., the second transmission resource may include only the transmission resource on the first symbol on the first layer in the scheduling unit. In this case, the second control information may be mapped on transmission resources that do not overlap in the time domain and overlap in the frequency domain with the transmission resources on the first symbol.

[ correcting 13.11.2019 according to rules 91 ] fig. 15 is a schematic view of resource distribution based on the frame structure two shown in fig. 13 according to the embodiment of the present application. Referring to fig. 13 and 14, as shown in fig. 15, on the first layer in the scheduling unit, the third transmission resource includes transmission resources other than the first transmission resource and the second transmission resource. When the scheduling unit includes a plurality of layers, on a first layer in the scheduling unit, the third transmission resource includes a transmission resource other than the first transmission resource and the second transmission resource; on other layers in the scheduling unit, the third transmission resource includes transmission resources other than the first transmission resource and the transmission resource on the first symbol.

Referring to fig. 15, assuming that data is mapped on a first symbol, the number of the first symbol is N, the symbol number may be 0,1, 2, …, N-1, and N is 1 or 2, the second transmission resource includes a resource number K equal to M _PSSCH12 × N. The first part and the second part of the data are determined, and the subsequent processes of modulation coding, MIMO coding, layer mapping and the like are the same as the frame format one, and are not described herein again.

Based on the communication method provided by the first aspect, the first terminal device may determine the first part and the second part of the data according to the first symbol and/or the first transmission resource for mapping the first control information, determine that the multiplexing order of the first part of the data in the first information is located before the second control information and the second part of the data, and then uniformly map the first information as a whole to the transmission resources except the first transmission resource in the scheduling unit according to the time domain precedence order.

Referring to fig. 16, a schematic structural diagram of a communication device according to an embodiment of the present application is shown, where the communication device 1600 includes: a transceiver module 1610 and a processing module 1620. The communication device may be adapted to implement the functionality relating to the first terminal device in the above-described method embodiments. For example, the communication device may be a terminal device, such as a handheld terminal device, a vehicle-mounted terminal device, a vehicle user device, or the like; the communication means may also be a chip included in the terminal device, or the communication means may be an in-vehicle device, such as an in-vehicle module or an in-vehicle unit built into a vehicle.

When the communication apparatus is used as a first terminal device to execute the method embodiment shown in fig. 3, a processing module 1620 is configured to determine first control information, where the first control information is mapped on a first transmission resource in a scheduling unit. The processing module 1620 is further configured to determine the first information according to the first transmission resource and/or the first symbol. The first information includes second control information, a first part of data and a second part, and the first part of data precedes the second part of data and the second control information in a multiplexing order in the first information. The processing module 1620 is further configured to map the first information to transmission resources other than the first transmission resource in the scheduling unit. The transceiver module 1610 is further configured to send the first control information and the first information to the second terminal device.

Wherein the first symbol is used for automatic gain control, AGC. The first symbol may include one or more symbols positioned most forward in one scheduling unit. The first control information may include information indicating a size of a transmission resource occupied by the second control information, for example, an aggregation level of a second level control channel in which the second control information is located. The length of the second control information in the embodiment of the application may be variable, and the second control information may be sent with different code rates, and the first control information indicates the size of the transmission resource occupied by the second control information, so that the overhead of the second control channel may be reduced. In the present application, when the aggregation level of the second control channel is set to be 1, the second control channel occupies 18 Resource Elements (REs), that is, each 18 REs form one second control channel resource group, and when the second control channel adopts different aggregation levels, the number of resources used by the second control channel is an integer multiple of the 18 REs.

In one possible design, the processing module 1620 is further configured to determine a second transmission resource. Wherein the second transmission resource may include at least one of: a transmission resource on a first symbol on a first layer in a scheduling unit, a transmission resource on the first layer in the scheduling unit that overlaps with the first transmission resource in a time domain and does not overlap in a frequency domain; or, the second transmission resource is located on the first symbol on the first layer in the scheduling unit, and the second transmission resource overlaps with the first transmission resource in the time domain and does not overlap with the first transmission resource in the frequency domain. It is easy to understand that the first part of the data may be data that can be mapped on the second transmission resource, so as to avoid resource waste and improve resource utilization.

Optionally, the second transmission resource is not overlapped with a transmission resource on a time domain symbol in the scheduling unit, where the demodulation reference signal DMRS is mapped, in a time domain, so as to avoid interference, caused by the DMRS that is power-enhanced on the same time domain symbol, to the data that is power-reduced, thereby ensuring reliability of data transmission.

In a possible design apparatus, the multiplexing order of the second control information in the first information is located before the second part of the data, which can effectively reduce the decoding delay of the second control information.

Optionally, when the first condition is satisfied, the multiplexing order of the second control information in the first information precedes the second portion of the data. Wherein, the first condition may be: not performing power enhancement on the first control information; or performing power enhancement on the first control information and not performing power enhancement on the demodulation reference signal DMRS; or, power enhancement is performed on the first control information and the demodulation reference signal DMRS, and data is not mapped on a time domain symbol on which the DMRS is mapped.

In another possible design, the processing module 1620 is further configured to determine to perform power enhancement on the first control information and the demodulation reference signal DMRS, map data on the time domain symbols in which the DMRS is mapped, and determine time domain symbols in which the DMRS is mapped in a third transmission resource, where the third transmission resource is not overlapped with the first transmission resource and the second transmission resource in a first layer time domain in the scheduling unit. The processing module 1620 is further configured to determine a multiplexing order of the second control information and the second part of the data in the first information according to the time domain symbol mapped with the DMRS in the third transmission resource.

In one possible design, the processing module 1620 is further configured to map the first information to transmission resources other than the first transmission resource in the scheduling unit according to an order of a frequency domain and a time domain.

In one possible design, the first transmission resource occupies n to n + k symbols in the scheduling unit, the time domain start symbol of the second transmission resource is the n + k +1 symbols in the scheduling unit, n is 0 or 1, and k is a positive integer.

The processing module 1620 involved in the communication apparatus may be implemented by a processor or a processor-related circuit component, and may be a processor or a processing unit; the transceiver module 1610 may be implemented by a transceiver or a transceiver-related circuit component, and may be a transceiver or a transceiver unit. The operations and/or functions of the modules in the communication apparatus are respectively for implementing the corresponding flows of the method shown in fig. 3, and are not described herein again for brevity.

Please refer to fig. 17, which is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device may specifically be a terminal device. For ease of understanding and illustration, in fig. 17, the terminal device is exemplified by a mobile phone. As shown in fig. 17, the terminal device includes a processor, and may further include a memory, and of course, may also include a radio frequency circuit, an antenna, an input/output device, and the like. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 17. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device. As shown in fig. 17, the terminal device includes a transceiving unit 1710 and a processing unit 1720. The transceiving unit 1710 may also be referred to as a transceiver, a transceiving device, a transceiving circuit, and the like. Processing unit 1720 may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Optionally, a device for implementing the receiving function in the transceiving unit 1710 may be regarded as a receiving unit, and a device for implementing the transmitting function in the transceiving unit 1710 may be regarded as a transmitting unit, that is, the transceiving unit 1710 includes a receiving unit and a transmitting unit. A receiving unit may also be referred to as a receiver, a receiving device, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, a transmitting device, a transmitting circuit, or the like. It should be understood that the transceiving unit 1710 is configured to perform the transmitting operation and the receiving operation on the terminal device side in the above method embodiments, and the processing unit 1720 is configured to perform other operations on the terminal device in the above method embodiments besides the transceiving operation.

An embodiment of the present application further provides a chip system, including: a processor coupled to a memory for storing a program or instructions that, when executed by the processor, cause the system-on-chip to implement the method of any of the above method embodiments.

The chip system may be a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processor Unit (CPU), a Network Processor (NP), a Digital Signal Processor (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD) or other integrated chips.

It will be appreciated that the steps of the above described method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

The embodiment of the present application further provides a computer-readable storage medium, where computer-readable instructions are stored in the computer-readable storage medium, and when the computer-readable instructions are read and executed by a computer, the computer is enabled to execute the method in any of the above method embodiments.

The embodiments of the present application further provide a computer program product, which when read and executed by a computer, causes the computer to execute the method in any of the above method embodiments.

The embodiment of the application also provides a communication system, which comprises a first terminal device and a second terminal device. Optionally, the communication system may further include a network device.

It should be understood that the processor mentioned in the embodiments of the present application may be a Central Processing Unit (CPU), and may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory referred to in the embodiments of the application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, the memory (memory module) is integrated in the processor.

It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of communication, the method comprising:

the first terminal equipment determines first control information, and the first control information is mapped on a first transmission resource in a scheduling unit;

the first terminal equipment determines first information according to the first transmission resource and/or a first symbol, wherein the first information comprises second control information, a first part and a second part of data, and the multiplexing sequence of the first part of the data in the first information is before the second part of the data and the second control information;

the first terminal equipment maps the first information to transmission resources except the first transmission resources in the scheduling unit;

and the first terminal equipment sends the first control information and the first information to second terminal equipment.
The communication method of claim 1, wherein the method further comprises:

the first terminal equipment determines a second transmission resource, and the first part of the data is data which can be mapped on the second transmission resource;

the second transmission resource comprises at least one of:

a transmission resource on the first symbol on a first layer in the scheduling unit;

a transmission resource on a first layer in the scheduling unit, the transmission resource overlapping with the first transmission resource in a time domain and not overlapping with the first transmission resource in a frequency domain;

alternatively, the first and second electrodes may be,

the second transmission resource is located on a first symbol on a first layer in the scheduling unit, and the second transmission resource overlaps with the first transmission resource in a time domain and does not overlap with the first transmission resource in a frequency domain.
The communication method according to claim 2, wherein the second transmission resource is non-overlapping in time domain with a transmission resource on a time domain symbol of the scheduling unit on which a demodulation reference signal (DMRS) is mapped.
A method according to any one of claims 1 to 3, wherein the multiplexing order of the second control information in the first information precedes the second part of the data.
The communication method according to claim 4, wherein when a first condition is satisfied, the multiplexing order of the second control information in the first information precedes the second part of the data;

wherein the first condition is one of:

not power boosting the first control information;

performing power enhancement on the first control information, and not performing power enhancement on a demodulation reference signal (DMRS);

and performing power enhancement on the first control information and the demodulation reference signal DMRS, and not mapping data on a time domain symbol for mapping the DMRS.
A method of communicating according to claim 2 or 3, the method further comprising:

the first terminal equipment determines to perform power enhancement on the first control information and a demodulation reference signal (DMRS), and maps data on a time domain symbol for mapping the DMRS;

the first terminal equipment determines a time domain symbol of a third transmission resource for mapping DMRS, wherein the third transmission resource is not overlapped with the first transmission resource and the second transmission resource on a first layer in the scheduling unit in a time domain;

and the first terminal equipment determines the multiplexing sequence of the second control information and the second part of the data in the first information according to the time domain symbol mapped with the DMRS in the third transmission resource.
The communication method according to any of claims 1 to 6, wherein the first symbol is used for automatic gain control, AGC.
The communication method according to any of claims 1 to 7, wherein the mapping of the first information to the transmission resources other than the first transmission resource in the scheduling unit by the first terminal device comprises:

and the first terminal equipment maps the first information to the transmission resources except the first transmission resource in the scheduling unit according to the sequence of the frequency domain first and the time domain second.
[ correction 13.11.2019 based on rules 91]
A communications apparatus, the apparatus comprising: the device comprises a processing module and a transmitting-receiving module; wherein the content of the first and second substances,

the processing module is configured to determine first control information, where the first control information is mapped to a first transmission resource in a scheduling unit;

the processing module is further configured to determine first information according to the first transmission resource and/or the first symbol, where the first information includes second control information, a first part and a second part of data, and a multiplexing order of the first part of data in the first information is before the second part of data and the second control information;

the processing module is further configured to map the first information to transmission resources other than the first transmission resource in the scheduling unit;

the transceiver module is configured to send the first control information and the first information to a second terminal device.
The communication device of claim 9,

the processing module is further configured to determine a second transmission resource, where the first part of the data is data that can be mapped on the second transmission resource;

wherein the second transmission resource comprises at least one of:

a transmission resource on the first symbol on a first layer in the scheduling unit;

transmission resources on a first layer in the scheduling unit that overlap with the first transmission resources in a time domain and do not overlap in a frequency domain;

or, the second transmission resource is located on a first symbol on a first layer in the scheduling unit, and the second transmission resource overlaps with the first transmission resource in a time domain and does not overlap with the first transmission resource in a frequency domain.
The communication apparatus according to claim 10, wherein the second transmission resource is non-overlapping in time domain with a transmission resource on a time domain symbol of the scheduling unit on which a demodulation reference signal (DMRS) is mapped.
A communication apparatus according to any of claims 9 to 11, wherein the multiplexing order of the second control information in the first information precedes the second part of the data.
The apparatus according to claim 12, wherein when a first condition is satisfied, the multiplexing order of the second control information in the first information precedes the second portion of the data;

wherein the first condition is one of:

not power boosting the first control information;

performing power enhancement on the first control information, and not performing power enhancement on a demodulation reference signal (DMRS);

and performing power enhancement on the first control information and the demodulation reference signal DMRS, and not mapping data on a time domain symbol for mapping the DMRS.
The communication device according to claim 10 or 11,

the processing module is further configured to determine to perform power enhancement on the first control information and the demodulation reference signal DMRS, and map data on a time domain symbol on which the DMRS is mapped;

the processing module is further configured to determine a time domain symbol, in which a DMRS is mapped, in a third transmission resource, where the third transmission resource is not overlapped with the first transmission resource and the second transmission resource in a first layer of time domain in the scheduling unit;

the processing module is further configured to determine, according to the time domain symbol mapped with the DMRS in the third transmission resource, a multiplexing order of the second control information and the second portion of the data in the first information.
A communication apparatus according to any of claims 9 to 14, wherein the first symbol is used for automatic gain control, AGC.
The communication device according to any one of claims 9 to 15,

the processing module is further configured to map the first information to transmission resources, other than the first transmission resource, in the scheduling unit according to a sequence of a frequency domain first and a time domain second.
A communication device configured to perform the method of any one of claims 1 to 8.
A communications apparatus, the apparatus comprising: a processor coupled with a memory;

the memory for storing a computer program;

the processor to execute the computer program stored in the memory to cause the apparatus to perform the method of any of claims 1 to 8.
A computer-readable storage medium, characterized in that it comprises a program or instructions which, when run on a computer, cause the computer to carry out the method according to any one of claims 1 to 8.
A computer program product, the computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method of any of claims 1 to 8.