CN112703804A

CN112703804A - Communication method and communication device

Info

Publication number: CN112703804A
Application number: CN201880097565.2A
Authority: CN
Inventors: 苏立焱; 李超君; 夏金环; 朱伟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-09-26
Filing date: 2018-09-26
Publication date: 2021-04-23
Anticipated expiration: 2038-09-26
Also published as: WO2020061788A1; CN112703804B

Abstract

The application provides a communication method and a communication device, comprising the following steps: receiving first configuration information from network equipment, wherein the first configuration information comprises physical layer multiplexing indication, the physical layer multiplexing indication is used for indicating a rate matching scheme of a first type of short physical downlink shared channel (sPDSCH) to be indicated by physical layer signaling, and the first type of sPDSCH is the sPDSCH loaded in a subslot with the number not being 0; receiving downlink control information DCI from network equipment, wherein the DCI is borne in a physical downlink control channel PDCCH domain, and the DCI is used for scheduling single sPDSCH borne in a subslot with the number of 0 or scheduling a plurality of sPDSCH including the sPDSCH borne in the subslot with the number of 0; when the DCI is used for scheduling a plurality of sPDSCH including the sPDSCH carried in the subslot with the number of 0, determining a rate matching scheme of the first type of sPDSCH according to multiplexing indication information in the DCI, or determining the rate matching scheme of the first type of sPDSCH according to high-layer signaling.

Description

Communication method and communication device

Technical Field

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

Background

With the continuous evolution of Long Term Evolution (LTE) systems and the development of 5th-generation (5G) communication systems, short transmission time interval (subslot) technology and Physical Downlink Shared Channel (PDSCH) repeat transmission (retransmission) technology are introduced in LTE to meet the requirements of low-latency transmission and high reliability.

The subslot technique may introduce shorter time scheduling units for LTE. For example, the subslot technique may introduce one slot, 2 time domain symbols, or 3 time domain symbols as a time scheduling unit for LTE. The PDSCH retransmission technique may enable a base station to schedule multiple PDSCHs within multiple subslots using one Downlink Control Information (DCI).

For example, one downlink subframe may include 6 subslots, the 6 subslots are numbered from subslot #0 to #5, and on each subslot from subslot #1 to subslot #5, the base station may configure 1 to 2 Resource Block (RB) sets (sets) for each User Equipment (UE). The UE detects short downlink control information (sDCI) on an RB set configured for the UE by a base station; on the other hand, the UE detects DCI in a Physical Downlink Control Channel (PDCCH) domain on the subslot #0, and therefore there is no RB set on the subslot # 0.

In order to effectively utilize resources, the sublot allows a short physical downlink shared channel (sPDSCH) to repeatedly use resources not occupied by the dci in the RB set. The base station may indicate through physical layer signaling whether the portion of the two RB sets overlapping the sPDSCH may be used to transmit the sPDSCH. In general, this indication process may also be referred to as rate matching.

For example, indication information may be added to the sdir to indicate whether the sPDSCH may occupy RB set resources. Since there are no RB sets on subslot #0, the DCI in the PDCCH region does not include this indication information. After the PDSCH retransmission is enabled, except for the first subslot, the other repeatedly transmitted subslots do not contain sDCI, and all the other repeatedly transmitted subslots follow the rate matching scheme on the first subslot.

However, the DCI in the PDCCH region does not include the indication information, and when the DCI indicating the PDSCH resource is transmitted in the PDCCH region, the rate matching scheme cannot be known by other repeatedly transmitted subslots.

Disclosure of Invention

The application provides a communication method and a communication device, which can enable other repeatedly transmitted subslot to obtain a rate matching scheme when DCI is transmitted in a PDCCH region.

In a first aspect, a communication method is provided, and the communication method includes: receiving first configuration information from a network device, where the first configuration information includes a physical layer multiplexing indication, where the physical layer multiplexing indication is used to indicate that a rate matching scheme of a first type of short physical downlink shared channel (sPDSCH) is indicated by physical layer signaling, and the first type of sPDSCH is an sPDSCH carried in a subslot with a number not 0; receiving Downlink Control Information (DCI) from network equipment, wherein the DCI is borne in a Physical Downlink Control Channel (PDCCH) domain, and the DCI is used for scheduling single sPDSCH borne in a subslot with the number of 0 or scheduling a plurality of sPDSCHs including the sPDSCH borne in the subslot with the number of 0; when the DCI is used for scheduling the plurality of sPDSCHs including the sPDSCH carried in the subslot with the number of 0, determining a rate matching scheme of the first type of sPDSCH according to multiplexing indication information in the DCI, or determining the rate matching scheme of the first type of sPDSCH according to high-layer signaling.

According to the communication method provided by the embodiment of the application, when the DCI is used for scheduling the plurality of sPDSCH including the sPDSCH carried in the subslot with the number 0, the rate matching scheme of the first class of sPDSCH is determined according to multiplexing indication information or high layer signaling in the DCI, and when the DCI is sent in a PDCCH region, other repeatedly transmitted subslots can obtain the rate matching scheme.

In some possible implementations, the subslot numbered 0 is a first subslot of each subframe, and the PDCCH region starts at a first symbol of each subframe.

In some possible implementations, the method further includes: receiving second configuration information from a network device, where the second configuration information is used to configure a resource block set, where the resource block set is used to carry short physical downlink control channel (sPDCCH), where the DCI includes resource allocation information, where the resource allocation information is used to indicate initial sPDSCH resources of the single sPDSCH or the multiple sPDSCHs, and the multiplexing indication information or the high layer signaling is used to indicate whether an overlapping portion of the initial sPDSCH resources and the resource block set can be used to transmit the sPDSCH; and determining the rate matching mode of the first type of sPDSCH according to the multiplexing indication information and the initial sPDSCH resource or according to the high-layer signaling and the initial sPDSCH resource.

In some possible implementations, the PDSCH resources used on the subslot with the number 0 are the initial PDSCH resources.

According to the communication method provided by the embodiment of the application, since the sPDSCH resource used in the subslot with the number of 0 is the initial sPDSCH resource, the downlink resource in the subslot with the number of 0 can be fully utilized to transmit the sPDSCH, and the utilization rate of the resource is improved. Meanwhile, the sPDSCH resource used in the subslot with the number of 0 is the initial sPDSCH resource, so that the scheduling complexity of the network equipment can be reduced.

In some possible implementations, the rate matching scheme for the PDSCH transmitted on the subslot numbered 0 is the same as the rate matching scheme for the first type of sPDSCH.

According to the communication method provided by the embodiment of the present application, since the rate matching scheme of the sPDSCH transmitted in the subslot with the number of 0 is the same as the rate matching scheme of the first type of sPDSCH, that is, the code rate of the sPDSCH transmitted in the subslot with the number of 0 is the same as the code rate of the first type of sPDSCH, the terminal device may combine the sPDSCH transmitted for the K times and then demodulate after receiving all the sPDSCH transmitted for the K times, which may reduce the processing complexity of the terminal device.

In some possible implementations, the multiplexing indication information is located in the DCI, and the multiplexing indication information is a predefined value when the DCI is only used for scheduling a single sPDSCH carried in the subslot of number 0.

According to the communication method provided by the embodiment of the application, since the multiplexing indication information in the DCI is a predefined value (known information), the reliability of DCI estimation can be improved.

In a second aspect, a communication method is provided, which includes: sending first configuration information to terminal equipment, wherein the first configuration information comprises a physical layer multiplexing indication, the physical layer multiplexing indication is used for indicating a rate matching mode of a first type of short physical downlink shared channel (sPDSCH) resources and indicated by physical layer signaling, and the first type of sPDSCH resources are sPDSCH resources borne in subslot with the number not being 0; generating multiplexing indication information or high-layer signaling, where the multiplexing indication information or the high-layer signaling is used to determine a rate matching scheme of first-class sPDSCH resources scheduled by downlink control information DCI, where the DCI is carried in a physical downlink control channel PDCCH region, and the DCI is used to schedule a single sPDSCH carried in the subslot with the number of 0, or the DCI is used to schedule multiple sPDSCH including the sPDSCH carried in the subslot with the number of 0; and sending the DCI or the high-layer signaling to terminal equipment, wherein the DCI comprises the multiplexing indication information.

In some possible implementations, the method further includes: sending second configuration information to a terminal device, where the second configuration information is used to configure a resource block set, where the resource block set is used to carry a short physical downlink control channel (sPDCCH), the DCI includes resource allocation information, the resource allocation information is used to indicate an initial sPDSCH resource of the single sPDSCH or the multiple sPDSCHs, and the indication information is used to indicate whether an overlapping portion of the initial sPDSCH resource and the resource block set can be used to transmit the sPDSCH.

In some possible implementations, the indication information is located in the DCI, and the indication information is a predefined value when the DCI is only used for scheduling a single sPDSCH carried in the subslot of number 0.

In a third aspect, a communication apparatus is provided, which includes: a receiving module, configured to receive first configuration information from a network device, where the first configuration information includes a physical layer multiplexing indication, where the physical layer multiplexing indication is used to indicate that a rate matching scheme of a first type of short physical downlink shared channel (sPDSCH) is indicated by physical layer signaling, and the first type of sPDSCH is an sPDSCH carried in a subslot with a number that is not 0; the receiving module is further configured to receive downlink control information DCI from a network device, where the DCI is carried in a PDCCH region of a physical downlink control channel, and the DCI is used to schedule a single sPDSCH carried in a subslot with the number of 0, or the DCI is used to schedule multiple sPDSCH including the sPDSCH carried in the subslot with the number of 0; a processing module to: when the DCI is used for scheduling the plurality of sPDSCHs including the sPDSCH carried in the subslot with the number of 0, determining a rate matching scheme of the first type of sPDSCH according to multiplexing indication information in the DCI, or determining the rate matching scheme of the first type of sPDSCH according to high-layer signaling.

In some possible implementations, the receiving module is further configured to: receiving second configuration information from a network device, where the second configuration information is used to configure a resource block set, where the resource block set is used to carry short physical downlink control channel (sPDCCH), where the DCI includes resource allocation information, where the resource allocation information is used to indicate initial sPDSCH resources of the single sPDSCH or the multiple sPDSCHs, and the multiplexing indication information or the high layer signaling is used to indicate whether an overlapping portion of the initial sPDSCH resources and the resource block set can be used to transmit the sPDSCH; the processing module is specifically configured to: and determining the rate matching mode of the first type of sPDSCH according to the multiplexing indication information and the initial sPDSCH resource or according to the high-layer signaling and the initial sPDSCH resource.

In a fourth aspect, a communication device is provided, which includes: a sending module, configured to send first configuration information to a terminal device, where the first configuration information includes a physical layer multiplexing indicator, where the physical layer multiplexing indicator is used to indicate a rate matching manner of a first type of short physical downlink shared channel sPDSCH resource, and the first type of sPDSCH resource is an sPDSCH resource carried in a subslot with a number that is not 0; a processing module, configured to generate multiplexing indication information or high-layer signaling, where the multiplexing indication information or the high-layer signaling is used to determine a rate matching scheme for a first type of sPDSCH resource scheduled by a downlink control information DCI, where the DCI is carried in a physical downlink control channel PDCCH region, and the DCI is used to schedule a single sPDSCH carried in the subslot with the number of 0, or the DCI is used to schedule multiple spdchs including the sPDSCH carried in the subslot with the number of 0; and the sending module is further configured to send the DCI or the high-level signaling to the terminal device, where the DCI includes the multiplexing indication information.

In some possible implementations, the sending module is further configured to: sending second configuration information to a terminal device, where the second configuration information is used to configure a resource block set, where the resource block set is used to carry a short physical downlink control channel (sPDCCH), the DCI includes resource allocation information, the resource allocation information is used to indicate an initial sPDSCH resource of the single sPDSCH or the multiple sPDSCHs, and the indication information is used to indicate whether an overlapping portion of the initial sPDSCH resource and the resource block set can be used to transmit the sPDSCH.

In a fifth aspect, a communication device is provided, which comprises a receiver and a processor, wherein the processor is configured to execute a program, and when the processor executes the program, the receiver and the processor implement the communication method in the first aspect or any one of the possible implementation manners of the first aspect.

Optionally, the communication device may further comprise a memory. The memory is used for storing programs executed by the processor.

In a sixth aspect, there is provided a communication device comprising a transmitter and a processor for executing a program, the transmitter and the processor implementing the communication method of the second aspect or any one of the possible implementations of the second aspect when the processor executes the program.

In a seventh aspect, a computer-readable storage medium is provided, in which a program code for execution by a communication apparatus is stored, the program code including instructions for implementing the first aspect or the communication method in any one of its possible implementations.

In an eighth aspect, a computer-readable storage medium is provided, in which a program code for execution by a communication apparatus is stored, the program code including instructions for implementing the communication method in the second aspect or any one of the possible implementations of the second aspect.

In a ninth aspect, a chip is provided, where the chip includes a processor and a communication interface, where the communication interface is used to communicate with an external device, and the processor is used to implement the first aspect or the communication method in any one of the possible implementations of the first aspect.

Optionally, the chip may further include a memory, where instructions are stored in the memory, and the processor is configured to execute the instructions stored in the memory, and when the instructions are executed, the processor is configured to implement the first aspect or the communication method in any one of the possible implementation manners of the first aspect.

A tenth aspect provides a chip, where the chip includes a processor and a communication interface, where the communication interface is used to communicate with an external device, and the processor is used to implement the second aspect or the communication method in any one of the possible implementations of the second aspect.

Optionally, the chip may further include a memory, the memory storing instructions, and the processor being configured to execute the instructions stored in the memory, and when the instructions are executed, the processor being configured to implement the second aspect or the communication method in any one of the possible implementations of the second aspect.

In an eleventh aspect, a computer program product is provided, which comprises instructions that, when run on a communication apparatus, cause the communication apparatus to perform the communication method of the first aspect or any possible implementation manner of the first aspect.

In a twelfth aspect, a computer program product is provided, which comprises instructions that, when run on a communication apparatus, cause the communication apparatus to perform the communication method of the second aspect or any possible implementation manner of the second aspect.

In a thirteenth aspect, an embodiment of the present application provides a communication system, which includes the communication apparatus described in one or more of the third aspect to the sixth aspect.

In a possible design, the communication system further includes another device that interacts with any one of the communication apparatuses described in one or more of the third aspect to the sixth aspect in the solution provided by the embodiment of the present application.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system to which the communication method of the embodiment of the present application can be applied.

Fig. 2 is a schematic flow chart of a communication method according to an embodiment of the present application.

Fig. 3 is a schematic flow chart of a communication method according to an embodiment of the present application.

Fig. 4 is a schematic flow chart of a communication method according to another embodiment of the present application.

Fig. 5 is a schematic flow chart of a communication method according to an embodiment of the present application.

Fig. 6 is a schematic flow chart of a communication method according to an embodiment of the present application.

Fig. 7 is a schematic flow chart of a communication method according to an embodiment of the present application.

Fig. 8 is a schematic flow chart of a communication method according to another embodiment of the present application.

Fig. 9 is a schematic configuration diagram of a communication apparatus according to an embodiment of the present application.

Fig. 10 is a schematic configuration diagram of a communication apparatus according to an embodiment of the present application.

Fig. 11 is a schematic configuration diagram of a communication apparatus according to another embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below 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, future fifth generation (5G) or new radio NR systems, etc.

Terminal equipment in the embodiments of the present application may refer to user equipment, access terminals, subscriber units, subscriber stations, mobile stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents, or user devices. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which are not limited in this embodiment.

The network device in this embodiment may be a device for communicating with a terminal device, where the network device may be a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) system or a Code Division Multiple Access (CDMA) system, may also be a base station (NodeB) in a Wideband Code Division Multiple Access (WCDMA) system, may also be an evolved NodeB (eNB) or eNodeB) in an LTE system, may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a future 5G network, or a network device in a future evolved PLMN network, and the like, and the present embodiment is not limited.

In the embodiment of the application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. Furthermore, the embodiment of the present application does not particularly limit the specific structure of the execution main body of the method provided by the embodiment of the present application, as long as the communication can be performed according to the method provided by the embodiment of the present application by running the program recorded with the code of the method provided by the embodiment of the present application, for example, the execution main body of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module capable of calling the program and executing the program in the terminal device or the network device.

In addition, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

The communication method of the present application may be used for the transmission of various types of services, which may include, for example, but are not limited to: a. ultra reliable and ultra low latency communication (URLLC) traffic. b. Enhanced mobile internet service (eMBB) service. Specifically, the international telecommunications union-radio communications commission (ITU-R) defines a future 5G application scenario, which may include eMBB and URLLC, and defines the capability requirements for a 5G network from 8 dimensions, such as throughput, latency, connection density, and spectral efficiency increase. The eMBB service mainly requires a high rate, a wide coverage, a transmission delay, and mobility. The main requirements of URLLC service are very high reliability, very low mobility and transmission delay, which generally requires that the wireless air interface reaches 99.999% of transmission reliability within 1 millisecond (ms).

Fig. 1 is an exemplary architecture diagram of a communication system 100 of one embodiment of the present application. The method in the embodiment of the present application may be applied to the communication system 100 shown in fig. 1. It should be understood that more or fewer network devices or terminal devices may be included in the communication system 100 to which the methods of the embodiments of the present application may be applied.

The network device or the terminal device in fig. 1 may be hardware, or may be functionally divided software, or a combination of the two. The network devices or terminal devices in fig. 1 may communicate with each other through other devices or network elements.

In the communication system 100 shown in fig. 1, a network device 110 and terminal devices 101 to 106 constitute one communication system 100. In the communication system 100, the network device 110 may transmit downlink data to the terminal devices 101 to 106, and of course, the terminal devices 101 to 106 may transmit uplink data to the network device 110. It should be understood that terminal devices 101-106 may be, for example, cellular phones, smart phones, laptops, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and/or any other suitable device for communicating over wireless communication system 100.

The communication system 100 may be a PLMN network, a device-to-device (D2D) network, a machine-to-machine (M2M) network, an IoT network, or other network.

The terminal devices 104 to 106 may form a communication system. In the communication system, the terminal device 105 may transmit downlink data to the terminal device 104 or the terminal device 106.

In a wireless communication system, the transmission of traffic may be scheduled based on a network device, and a data packet of an upper layer may be divided into small data packets in units of transport blocks when scheduled by a physical layer. One basic unit of time may be one slot (slot) or one subframe (subframe), one subframe may be 1 millisecond (ms) in duration in the time domain, one subframe may include 14 time domain symbols, and one slot may include 7 or 14 time domain symbols. Since the Transmission Time Interval (TTI) substantially coincides with the physical meaning of the subframe, the TTI may be used as the basic time unit for scheduling.

All resources of the first 1-3 time domain symbols in the time domain in the 14 time domain symbols included in one subframe can be called as a PDCCH (physical Downlink control channel) domain and used for transmitting a PDCCH. The remaining portion of the subframe is used for transmitting PDSCH. The specific number of time domain numbers included in the PDCCH region may be referred to as a Control Format Indicator (CFI), that is, the number of time domain numbers included in the PDCCH region may be represented by a CFI.

In general, the network device may transmit DCI in the PDCCH region, which may be used to instruct the terminal device to receive the time-frequency domain resources of the PDSCH and necessary information needed by the terminal device to demodulate the PDSCH.

In this embodiment, the network device may also perform scheduling based on a shorter time scheduling unit. For example, the network device may perform scheduling in a time slot or 2 to 3 time domain symbols as a basic time unit. Generally, a time scheduling unit shorter than 1ms may be referred to as a sub slot (subslot) or a short transmission time interval (sTTI), and for convenience of description, the subslot is used to refer to the time scheduling unit shorter than 1ms in a unified manner.

As shown in fig. 2, a downlink subframe may include 14 time domain symbols, which are numbered with 0 to 13, and the downlink subframe may be divided into 6 subslots with a length of 2 or 3 time domain symbols according to different values of CFI.

It should be understood that a subslot in the embodiment of the present application may also be referred to as a subslot (subslot).

As can be seen from fig. 2, the pattern (pattern) of the subslot in one downlink subframe depends on the CFI. If and only if the CFI is 2, the 6 subslots have {2, 3, 2, 2, 2, 3} time domain symbols, respectively; when CFI is 1 or 3, 6 subslots have {3, 2, 2, 2, 2, 3} time domain symbols, respectively. When the CFI is 1, only one time domain symbol in the subslot #0 is occupied by the PDCCH region, and the remaining two time domain symbols can still be used for transmitting the PDSCH, but when the CFI >1, the subslot #0 is completely occupied by the PDCCH region, so the PDSCH cannot be transmitted.

It should be understood that the subslot numbers subslot #0 to #5 in fig. 2 are physical numbers, not logical numbers, i.e., when the CFI takes a certain value, the position of each subslot, the corresponding number, and the number of time domain symbols included therein may be fixed. For example, when CFI is 1, subslot #0 includes three time domain symbols numbered 0, 1, and 2, and subslot #1 includes two time domain symbols numbered 3 and 4; when CFI is 2, subslot #0 includes two time domain symbols numbered 0 and numbered 1, and subslot #1 includes three time domain symbols numbered 2, 3, and 4. As shown in fig. 2, the positions of subslot #2 to #5 and the number of time domain symbols included therein do not change due to the difference in the values of CFIs.

In this embodiment of the present application, a Resource Block (RB) set (set) may also be included in the subslot, and the RB set may be a time-frequency domain resource in the subslot. The network equipment can configure 1-2 RB sets for one terminal equipment through high-level signaling.

Alternatively, two RB sets may be included in one subslot, and the two RB sets may overlap in the time-frequency domain. A set of RBs in a subslot may start from a first time domain symbol in the time domain included in the subslot and end at the first or second time domain symbol in the time domain included in the subslot. The union of these two sets of RBs may be referred to as the sPDCCH region of the subslot.

For example, as shown in fig. 3, when the CFI is 1, RB set1 in subslot #1 may start from the time domain symbol numbered 3 and may end from the time domain symbol numbered 4, and RB set 2 in subslot #1 may start from the time domain symbol numbered 3 and may end from the time domain symbol numbered 3. Furthermore, as can be seen from fig. 3, subslot #0 may not include RB set.

In this embodiment, in subslot #1 to #5, the terminal device may detect DCI on an RB set configured for the terminal device by the network device, where the DCI may be referred to as an sddci. If subslot #0 does not include RB sets, the terminal device may detect DCI on the PDCCH region on subslot # 0.

In particular, since the numbering of the subslot is physical, when the CFI is 2, the subslot #1 includes three time domain symbols numbered 2, 3, and 4, and if the subslot #1 includes two RB sets, the RB set1 in the subslot #1 may start from the time domain symbol numbered 2 and end from the time domain symbol numbered 3, and the RB set 2 in the subslot #1 may start from the time domain symbol numbered 2 and end from the time domain symbol numbered 2.

In order to distinguish the DCI detected by the terminal device in the PDCCH region, in the following description of the present application, the DCI detected by the terminal device in the sPDCCH region (i.e., RB set) is referred to as DCI.

In order to improve the utilization rate of resources, in the embodiment of the present application, resources that are not occupied by the sdir in RB sets of subslot #1 to #5 may be used for transmitting the sPDSCH.

As shown in the left diagram in fig. 4, sPDSCH partially overlaps both RB set1 and RB set 2 in the time-frequency domain, sDCI is not transmitted in the overlapping portion of sPDSCH with RB set1 in the time-frequency domain, and the overlapping portion of sPDSCH with RB set 2 in the time-frequency domain is used for transmitting sDCI, so that sPDSCH can be transmitted in the overlapping portion with RB set1 in the time-frequency domain. Optionally, the sPDSCH may be scheduled through sdir in RB set 1.

In general, after the network device determines the resources used for transmitting the PDSCH, the network device and the terminal device receiving the PDSCH may align the coding rate used for the downlink transmission. The process of aligning the coding rates used for downlink transmission may be referred to herein as rate matching.

Specifically, rate matching can be achieved by the following procedure:

1. the network equipment can configure a rate matching scheme to the terminal equipment through high-level signaling, wherein the rate matching scheme is indicated by the high-level signaling or indicated by physical-layer signaling;

2. if the network equipment configures a rate matching scheme to the terminal equipment through the high-level signaling and is indicated by the high-level signaling, the subsequent network equipment can indicate the rate matching scheme to the terminal equipment through the high-level signaling, for example, whether the sPDSCH can be transmitted with the RB set overlapped part on the time-frequency domain can be indicated to the terminal equipment through the high-level signaling;

3. if the network device configures the rate matching scheme to the terminal device through the high-layer signaling and is indicated by the physical layer signaling, the indication information for indicating the rate matching scheme may be added to the sDCI, and the subsequent network device may indicate the rate matching scheme to the terminal device through the indication information.

For example, 2-bit (bit) indication information may be added to the sdis of subslot #1 to # 5. As shown in fig. 4, the 2-bit indication information may correspond to two RB sets in the subslot where the sDCI is located, and respectively indicate whether the sPDSCH can be transmitted in a portion overlapping with RB set1 in the time-frequency domain and a portion overlapping with RB set 2 in the time-frequency domain.

The indication information of 2 bits introduced in the sddci of subslot #1 to #5 may be referred to as a usable/unusable sPDCCH resource indication (Used/Unused sPDCCH resource indication) bit field, which may be referred to as a usable/unusable (Used/Unused) field for short.

In addition, since the RB set is not included in the subslot #0, and the DCI for sPDSCH in the subslot #0 is scheduled in the PDCCH region, the DCI in the PDCCH region does not include the indication information of 2 bits.

It should be understood that, in the embodiment of the present application, the network device may indicate the rate matching scheme to the terminal device through physical layer signaling. At this time, if the subslot #0 does not include the RB set, DCI transmitted on the subslot #0 may be N bits, and correspondingly, DCI transmitted on the subslots #1 to #5 may be N +2 bits, where N is a positive integer.

In the downlink transmission process, one DCI can only schedule the PDSCH in one TTI or subslot. In order to improve the reliability of transmission, in the embodiment of the present application, a PDSCH repeat transmission (PDSCH repeat) technology may be introduced, that is, the network device may activate PDSCH repeat to the terminal device through a high-level signaling. Thereafter, the network device may schedule multiple PDSCHs in multiple TTIs or subslots for the terminal device using one DCI.

Optionally, 2-bit indication information may be added to the DCI, where the indication information is used to indicate the number of TTIs or subslots scheduled by the DCI. Or, it can be said that the indication information is used for indicating the number of times that the PDSCH scheduled by the DCI is repeatedly transmitted. Optionally, the number of times of repeated transmission of the PDSCH indicated by the indication information includes a first transmission of the PDSCH.

As a possible implementation manner of the embodiment of the present application, when the network device configures the rate matching scheme to the terminal device through the high-level signaling and is indicated by the high-level signaling, the terminal device may obtain the rate matching scheme from the high-level signaling. Further, the subslots of other PDSCH with repeated transmission may all be rate matched according to the rate matching scheme.

However, since the modification period of the high layer signaling is long, and the network device may set the rate matching scheme to sPDSCH with a high probability that the sPDCCH does not occupy the sPDCCH resource, but each subslot does not have the scdi to use the reserved resource, this way of indicating the rate matching scheme to the terminal device by the high layer signaling may result in reduction of available resources for downlink transmission, and waste of resources.

As another possible implementation manner of the embodiment of the present application, when the network device configures a rate matching scheme to the terminal device through a high-level signaling and is indicated by a physical layer signaling, the network device may indicate whether the sPDSCH can occupy the RB set resource to the terminal device through the indication information of 2bit in the dci. Meanwhile, the terminal device may enable PDSCH retransmission, and if the PDSCH is repeatedly transmitted K times, the first subslot transmitting the PDSCH may perform rate matching through the sDCI in the subslot, and no DCI is included in other K-1 subslots. In this possible implementation, the other K-1 subslots may all perform rate matching according to the rate matching scheme of the sDCI in the first subslot.

Since the DCI in the PDCCH region does not include the 2-bit indication information, as shown in fig. 5, when the DCI indicating the number of times of PDSCH repeated transmission is transmitted in the PDCCH region, the other K-1 subslots cannot obtain the rate matching scheme.

In view of the above problem, the present application provides a communication method, where when a DCI indicating a PDSCH resource is transmitted in a PDCCH region, other repeatedly transmitted subslots may obtain a rate matching scheme, in a case where a rate matching scheme is indicated to a terminal device by physical layer signaling.

Fig. 6 is a schematic flow chart of a communication method according to an embodiment of the present application. It should be understood that fig. 6 shows steps or operations of a communication method, but these steps or operations are only examples, and other operations or variations of the operations in fig. 6 may be performed by the embodiments of the present application, or not all the steps need to be performed, or the steps may be performed in other orders.

S601, the network equipment sends first configuration information, the first configuration information includes physical layer multiplexing indication, the physical layer multiplexing indication is used for indicating that a rate matching scheme of a first type of short physical downlink shared channel sPDSCH is indicated by physical layer signaling, and the first type of sPDSCH is the sPDSCH carried in a subslot with the number not being 0. Accordingly, the terminal device receives the first configuration information.

Wherein, the physical layer multiplexing indication (L1-based reuse indication) can be used to indicate that the rate matching scheme of the sPDSCH carried in the subslot with the number not being 0 is indicated by the higher layer signaling or the physical layer signaling. In the embodiment of the present application, the physical layer multiplexing indication is used to indicate that the rate matching scheme of the sPDSCH carried in the subslot with the number not being 0 is indicated by physical layer signaling.

Alternatively, the first configuration information may be transmitted through higher layer signaling. For example, the first configuration information may be carried in RRC signaling.

The first type of sPDSCH may refer to the sPDSCH carried in a subslot with a number different from 0. Subslot numbers other than 0 here may include subslot #1 to # 5.

Optionally, the network device may further send second configuration information, where the second configuration information is used to configure a resource block set, and the resource block set is used to carry a short physical downlink control channel sPDCCH. Accordingly, the terminal device may receive the second configuration information.

Optionally, the terminal device may configure the resource block set according to the second configuration information.

In this embodiment, the physical layer signaling may be DCI, and the DCI may include resource allocation information, where the resource allocation information may be used to indicate initial sPDSCH resources of a single sPDSCH or multiple sPDSCH. It should be understood that the initial sPDSCH resource may be the sPDSCH resource indicated in the DCI, where the sPDSCH resource is not rate matched.

S602, the network equipment sends downlink control information DCI, the DCI is loaded in a physical downlink control channel PDCCH domain, the DCI is used for scheduling a single sPDSCH loaded in a subslot with the number of 0, or the DCI is used for scheduling a plurality of sPDSCHs including the sPDSCH loaded in the subslot with the number of 0. Accordingly, the terminal device receives the DCI.

In this embodiment of the present application, the subslot numbered 0 may be a first subslot of each subframe, where a subslot may also be referred to as a subslot.

In this embodiment, a downlink subframe may be divided into 6 subslots with a length of 2 or 3 time domain symbols.

Alternatively, subslots may be numbered with subslot #0 to # 5. It should be understood that the numbers subslot #0 to #5 herein are physical numbers, not logical numbers, i.e., when the CFI takes a certain value, the position of each subslot, the corresponding number, and the number of time domain symbols included therein may be fixed.

In general, the PDCCH region may start at the first symbol of each subframe and end at the first, second, or third symbol of each subframe. The symbol here may be a time domain symbol in a subframe. That is, the PDCCH region may include resources included in the first 1 to 3 time domain symbols in the time domain among 14 time domain symbols included in one subframe.

Optionally, before S602, the network device may further send third configuration information, where the third configuration information may be used to indicate a transmission time interval and activate repeated transmission of the PDSCH. For example, the third configuration information may indicate that the transmission time interval is N subslots and activates repeated transmission of the PDSCH, and where N is a positive integer and 1 subslot may be 2 or 3 time domain symbols. Accordingly, the terminal device may receive the third configuration information.

For example, when the third configuration information indicates that the transmission time interval is 1 subslot and activates the PDSCH repeat transmission, the terminal device may determine the number of times of PDSCH repeat transmission according to the physical layer signaling, and at this time, if the physical layer signaling indicates that the number of times of PDSCH repeat transmission is one, the DCI may schedule a single sPDSCH carried in the subslot # 0; if the physical layer signaling indicates that the number of repeated transmission of the PDSCH is multiple, the DCI may schedule multiple sPDSCH including the sPDSCH carried in subslot # 0.

Alternatively, the terminal device may determine the number of times the PDSCH is repeatedly transmitted through the DCI.

Optionally, the third configuration information may indicate that a transmission time interval of the PDSCH is N slots (slots), where 1 slot may be 7 time domain symbols.

S603, when the DCI is used for scheduling the plurality of sPDSCH including the sPDSCH carried in the subslot with the number of 0, determining the rate matching scheme of the first type of sPDSCH according to multiplexing indication information in the DCI, or determining the rate matching scheme of the first type of sPDSCH according to high-layer signaling.

In general, two RB sets, RB set1 and RB set 2, may be included in a subslot.

In the embodiment of the present application, the terminal device may determine the rate matching scheme for the first type of sPDSCH according to the multiplexing indication information in the DCI. In this case, the multiplexing indication information in the DCI may indicate whether the first sPDSCH can be transmitted in a portion overlapping with RB set1 in the time-frequency domain and in a portion overlapping with RB set 2 in the time-frequency domain.

For example, the multiplexing indication information may be 2 bits, and the multiplexing indication information of 2 bits may be respectively corresponding to RB set1 and RB set 2. The 2 bits are used to indicate whether the first type sPDSCH can be transmitted in the portion overlapping with RB set1 in the time-frequency domain and the portion overlapping with RB set 2 in the time-frequency domain, respectively.

It should be understood that the foregoing first type of sPDSCH may refer to the sPDSCH actually carried in subslot #1 to #5, and the initial sPDSCH resource may be the sPDSCH resource indicated in the DCI, that is, the first type of sPDSCH may be the sPDSCH resource actually used in transmission in subslot #1 to #5 after the initial sPDSCH resource is rate-matched.

In other words, the multiplexing indication information may indicate whether the overlapping portion of the initial sPDSCH resource and RB set can be used for transmission of the sPDSCH.

Correspondingly, it can also be said that the terminal device may determine the rate matching manner of the first type of sPDSCH according to the multiplexing indication information and the initial sPDSCH resource.

In this embodiment, the terminal device may determine the rate matching scheme for the first type of sPDSCH according to higher layer signaling. At this time, the higher layer signaling may indicate whether the first type sPDSCH can be transmitted with the portion overlapping with RB set1 in the time-frequency domain and with the portion overlapping with RB set 2 in the time-frequency domain, respectively.

For example, the higher layer signaling may include 2-bit indication information. Meanwhile, the indication information of 2 bits may be respectively corresponding to RB set1 and RB set 2. The 2-bit indication information is used to indicate whether the first type sPDSCH can be transmitted in the portion overlapping with RB set1 in the time-frequency domain and the portion overlapping with RB set 2 in the time-frequency domain.

It should be appreciated that the higher layer signaling may indicate whether the overlapping portion of the initial sPDSCH resources and RB sets can be used for transmission of the sPDSCH.

Correspondingly, the terminal equipment can also be said to determine the rate matching mode of the first type of sPDSCH according to the high layer signaling and the initial sPDSCH resource.

The above embodiment details how the first type of sPDSCH performs rate matching when the DCI is used to schedule the plurality of sPDSCH including the sPDSCH carried in the subslot number 0, and next describes how the subslot #0 performs transmission at this time.

As a possible implementation manner of the embodiment of the present application, the PDSCH resources used on the subslot #0 may be the initial PDSCH resources.

Optionally, as shown in fig. 7, the DCI is carried in the PDCCH region, where the DCI may schedule sPDSCH in subslot #0 and subslot #1, and taking sPDSCH repeated transmission for 2 times as an example, the sPDSCH in the subslot #1 may perform rate matching according to multiplexing indication information or higher layer signaling in the DCI, where the sPDSCH resource used in the subslot #0 may be the initial sPDSCH resource, that is, the sPDSCH transmitted in the subslot #0 may be transmitted on the sPDSCH resource (initial sPDSCH resource) indicated by the DCI.

It should be understood that, in the embodiment of the present application, the number of repeated transmission of the sPDSCH may be greater than or equal to 2, where 2 is merely an example and is not a limitation.

Since the sPDSCH resource used in the subslot #0 is the initial sPDSCH resource, the sPDSCH can be transmitted by fully utilizing the downlink resource in the subslot #0, and the utilization rate of the resource is improved. Meanwhile, the sPDSCH resources used on the subslot #0 are the initial sPDSCH resources, so that the scheduling complexity of the network equipment can be reduced.

As a possible implementation manner of the embodiment of the present application, the rate matching scheme of the sPDSCH transmitted in subslot #0 may be the same as the rate matching scheme of the first type of sPDSCH.

Alternatively, as shown in fig. 8, DCI is carried in the PDCCH region, and the DCI may schedule sPDSCH in subslot #0 and subslot # 1. Taking the sPDSCH repeated transmission 2 times as an example, the sPDSCH in subslot #1 may perform rate matching according to the multiplexing indication information or higher layer signaling in the DCI. At this time, although there is no RB set in the subslot #0 and rate matching is not needed, the rate matching scheme of the sPDSCH transmitted in the subslot #0 may be the same as the rate matching scheme of the sPDSCH transmitted in the subslot #1, that is, the sPDSCH in the subslot #0 may be transmitted on the same resource as the sPDSCH in the subslot # 1.

In the embodiment of the present application, although there is no RB set in subslot #0, it may still be assumed that there is an RB set in subslot #0 that is the same as that in subslot #1 to #5, so that when the sPDSCH in subslot #0 is transmitted, the same rate matching scheme as the sPDSCH transmitted in subslot #1 to #5 may be adopted.

Since the rate matching scheme of the sPDSCH transmitted in subslot #0 is the same as the rate matching scheme of the first type of sPDSCH, that is, the code rate of the sPDSCH transmitted in subslot #0 is the same as the code rate of the first type of sPDSCH, the terminal device may combine the sPDSCH transmitted for K times and then demodulate after receiving all the sPDSCH transmitted for K times, which may reduce the processing complexity of the terminal device.

As a possible implementation manner of the embodiment of the present application, when the DCI schedules only a single sPDSCH carried in subslot #0, the multiplexing indication information may be a predefined value.

For example, no RB set exists in the subslot #0, when the DCI schedules only a single sPDSCH carried in the subslot #0, the multiplexing indication information in the DCI does not need to indicate a rate matching scheme of the first class of sPDSCH, and at this time, the multiplexing indication information may be preset to a certain predefined value.

Optionally, when the DCI is only used for the PDSCH in the subslot with the scheduling number 0, the multiplexing indication information may be a predefined value, and at this time, the multiplexing indication information may become a virtual Cyclic Redundancy Check (CRC). The terminal device may check the DCI according to the multiplexing indication information in the DCI.

Alternatively, the multiplexing indication information may be a predefined value of 2 bits, for example, the multiplexing indication information may be predefined as "00", "01", "10", or "11".

Optionally, the multiplexing indication information may be located in the DCI, and in this case, the DCI may include known information of 2 bits. Similarly, the terminal device as a receiving end may determine the known information of 2 bits in advance, and check the DCI according to the known information of 2 bits.

For example, the network device may determine in advance that the multiplexing indication information is "00" and transmit the multiplexing indication information to the terminal device. Due to noise and the like, when the terminal device estimates the DCI, it may be found that the DCI has a 50% probability of 10XXXX and a 40% probability of 00YYYY, and it is assumed that the positions of "10" and "00" are positions where the multiplexing indication information is located. At this time, if there is no predefined multiplexing indication information, the DCI may be erroneously determined as 10XXXX, and since the multiplexing indication information is known as "00", the DCI may be correctly determined as 00 YYYY.

In the above embodiment, since the multiplexing indication information in the DCI is a predefined value (known information), the reliability of DCI estimation can be improved.

As a possible implementation manner, when the network device indicates the rate matching scheme to the terminal device through the higher layer signaling, different rate matching schemes may be configured for multiple subslots through the higher layer signaling.

Optionally, the multiple subslots may be regarded as one subslot set, that is, one subslot set is configured through higher layer signaling.

Optionally, one downlink subframe including 6 subslots may be regarded as one set, and different rate matching schemes may be configured for each subslot in the subslot set through a higher layer signaling.

Optionally, one downlink subframe may include 6 subslots, and the 6 subslots in the downlink subframe are regarded as one subslot set, and at this time, different rate matching schemes may be configured for the 6 subslots in the subslot set through a high layer signaling.

For example, the higher layer signaling may indicate a sub slot rate matching scheme with 2-bit indication information. At this time, the rate matching scheme of 6 subslots in the subslot set may be configured by the higher layer signaling as { "10", "00", "10", "00" }, where { "10", "00", and "00" are in one-to-one correspondence with 6 subslots in one downlink subframe, and are used to indicate the rate matching scheme of 6 subslots in the downlink subframe.

Fig. 9 is a schematic block diagram of a communication apparatus 900 according to an embodiment of the present application. It should be understood that communications apparatus 900 is merely an example. The communication apparatus of the embodiment of the present application may further include other modules or units, or include modules having functions similar to those of the respective modules in fig. 9, or not include all the modules in fig. 9.

A receiving module 910, configured to receive first configuration information from a network device, where the first configuration information includes a physical layer multiplexing indicator, where the physical layer multiplexing indicator is used to indicate that a rate matching scheme of a first type of short physical downlink shared channel sPDSCH is indicated by physical layer signaling, and the first type of sPDSCH is an sPDSCH that is carried in a subslot with a number that is not 0;

the receiving module 910 is further configured to receive downlink control information DCI from a network device, where the DCI is carried in a PDCCH region of a physical downlink control channel, and the DCI is used to schedule a single sPDSCH carried in a subslot with a number of 0, or the DCI is used to schedule multiple sPDSCH that includes the sPDSCH carried in the subslot with the number of 0;

a processing module 920 configured to: when the DCI is used for scheduling the plurality of sPDSCHs including the sPDSCH carried in the subslot with the number of 0, determining a rate matching scheme of the first type of sPDSCH according to multiplexing indication information in the DCI, or determining the rate matching scheme of the first type of sPDSCH according to high-layer signaling.

Optionally, the subslot with the number 0 is a first subslot of each subframe, and the PDCCH region starts from a first symbol of each subframe.

Optionally, the receiving module 910 is further configured to: receiving second configuration information from a network device, where the second configuration information is used to configure a resource block set, where the resource block set is used to carry short physical downlink control channel (sPDCCH), where the DCI includes resource allocation information, where the resource allocation information is used to indicate initial sPDSCH resources of the single sPDSCH or the multiple sPDSCHs, and the multiplexing indication information or the high layer signaling is used to indicate whether an overlapping portion of the initial sPDSCH resources and the resource block set can be used to transmit the sPDSCH;

the processing module 920 is specifically configured to: and determining the rate matching mode of the first type of sPDSCH according to the multiplexing indication information and the initial sPDSCH resource or according to the high-layer signaling and the initial sPDSCH resource.

Optionally, the PDSCH resource used on the subslot with the number 0 is the initial PDSCH resource.

Optionally, the rate matching scheme of the PDSCH transmitted on the subslot with the number 0 is the same as the rate matching scheme of the first type sPDSCH.

Optionally, the multiplexing indication information is located in the DCI, and the multiplexing indication information is a predefined value when the DCI is only used for scheduling a single sPDSCH carried in the subslot with the number 0.

The communication apparatus 900 may be configured to perform the steps performed by the terminal device in the method described in fig. 6, and for brevity, the description is omitted here.

Fig. 10 is a schematic block diagram of a communication apparatus 1000 according to an embodiment of the present application. It should be understood that communication apparatus 1000 is merely an example. The communication apparatus of the embodiment of the present application may further include other modules or units, or include modules having functions similar to those of the respective modules in fig. 10, or not include all the modules in fig. 10.

A sending module 1010, configured to send first configuration information to a terminal device, where the first configuration information includes a physical layer multiplexing indicator, where the physical layer multiplexing indicator is used to indicate a rate matching manner of a first type of short physical downlink shared channel sPDSCH resource, and the first type of sPDSCH resource is an sPDSCH resource carried in a subslot whose number is not 0;

a processing module 1020, configured to generate multiplexing indication information or high-layer signaling, where the multiplexing indication information or the high-layer signaling is used to determine a rate matching scheme for a first type of sPDSCH resource scheduled by a downlink control information DCI, where the DCI is carried in a physical downlink control channel PDCCH region, and the DCI is used to schedule a single sPDSCH carried in the subslot with the number of 0, or the DCI is used to schedule multiple spdchs including the sPDSCH carried in the subslot with the number of 0;

the sending module 1010 is further configured to send the DCI or the high-layer signaling to the terminal device, where the DCI includes the multiplexing indication information.

Optionally, the sending module 1010 is further configured to: sending second configuration information to a terminal device, where the second configuration information is used to configure a resource block set, where the resource block set is used to carry a short physical downlink control channel (sPDCCH), the DCI includes resource allocation information, the resource allocation information is used to indicate an initial sPDSCH resource of the single sPDSCH or the multiple sPDSCHs, and the indication information is used to indicate whether an overlapping portion of the initial sPDSCH resource and the resource block set can be used to transmit the sPDSCH.

Optionally, the indication information is located in the DCI, and the indication information is a predefined value when the DCI is only used for scheduling a single sPDSCH carried in the subslot of number 0.

The communication apparatus 1000 may be used for performing the steps performed by the network device in the method described in fig. 6, and for brevity, the description is not repeated here.

Fig. 11 is a schematic configuration diagram of a communication apparatus 1100 according to an embodiment of the present application. It should be understood that the communication apparatus 1100 shown in fig. 11 is only an example, and the communication apparatus of the embodiment of the present application may further include other modules or units, or include modules having functions similar to those of the respective modules in fig. 11.

The communications apparatus 1100 can include one or more processors 1110, one or more memories 1120, a receiver 1130, and a transmitter 1140. The receiver 1130 and the transmitter 1140 may be integrated together, referred to as a transceiver. Memory 1120 is used to store program code executed by processor 1110. The memory 1120 may be integrated into the processor 1110, or the processor 1110 may be coupled to one or more memories 1120 for fetching instructions from the memory 1120.

In one embodiment, processor 1110 may be configured to implement operations or steps capable of being implemented by processing module 920 of fig. 9, and receiver 1130 may be configured to implement operations or steps capable of being implemented by receiving module 910 of fig. 9.

In another embodiment, the processor 1110 may be configured to implement the operations or steps that the processing module 1020 of fig. 10 is capable of implementing, and the transmitter 1140 may be configured to implement the operations or steps that the transmitting module 1010 of fig. 10 is capable of implementing.

It should be understood that the processor in the embodiments of the present application may be a Central Processing Unit (CPU), and the processor 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 in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can 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 Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer instructions or the computer program are loaded or executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

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 each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

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, comprising:

receiving first configuration information from a network device, where the first configuration information includes a physical layer multiplexing indication, where the physical layer multiplexing indication is used to indicate that a rate matching scheme of a first type of short physical downlink shared channel (sPDSCH) is indicated by physical layer signaling, and the first type of sPDSCH is an sPDSCH carried in a subslot with a number not 0;

receiving Downlink Control Information (DCI) from the network equipment, wherein the DCI is carried in a Physical Downlink Control Channel (PDCCH) domain, and the DCI is used for scheduling a single sPDSCH carried in a subslot with the number of 0 or scheduling a plurality of sPDSCHs including the sPDSCH carried in the subslot with the number of 0;

when the DCI is used for scheduling the plurality of sPDSCHs including the sPDSCH carried in the subslot with the number of 0, determining a rate matching scheme of the first type of sPDSCH according to multiplexing indication information in the DCI, or

And determining the rate matching scheme of the first type of sPDSCH according to high-layer signaling.
The method of claim 1, wherein the subslot number 0 is a first subslot of each subframe, and wherein the PDCCH region starts at a first symbol of each subframe.
The method according to claim 1 or 2, characterized in that the method further comprises:

receiving second configuration information from the network device, where the second configuration information is used to configure a resource block set, where the resource block set is used to carry short physical downlink control channel (sPDCCH), where the DCI includes resource allocation information, where the resource allocation information is used to indicate initial sPDSCH resources of the single sPDSCH or the multiple sPDSCHs, and the multiplexing indication information or the high layer signaling is used to indicate whether an overlapping portion of the initial sPDSCH resources and the resource block set can be used to transmit sPDSCH;

and determining the rate matching mode of the first type of sPDSCH according to the multiplexing indication information and the initial sPDSCH resource or according to the high-layer signaling and the initial sPDSCH resource.
The method according to any of claims 1-3, wherein the PDSCH resources used on the subslot with number 0 are the initial PDSCH resources.
The method according to any of claims 1 to 4, wherein the rate matching scheme for the PDSCH transmitted on the subslot numbered 0 is the same as the rate matching scheme for the first type of sPDSCH.
The method according to any of claims 1 to 5, wherein the multiplexing indication information is located in the DCI, and wherein the multiplexing indication information is a predefined value when the DCI is only used for scheduling a single sPDSCH carried in the subslot number 0.
A method of communication, comprising:

sending first configuration information to terminal equipment, wherein the first configuration information comprises a physical layer multiplexing indication, the physical layer multiplexing indication is used for indicating a rate matching mode of a first type of short physical downlink shared channel (sPDSCH) resources and indicated by physical layer signaling, and the first type of sPDSCH resources are sPDSCH resources borne in subslot with the number not being 0;

generating multiplexing indication information or high-layer signaling, where the multiplexing indication information or the high-layer signaling is used to determine a rate matching scheme of first-class sPDSCH resources scheduled by downlink control information DCI, where the DCI is carried in a physical downlink control channel PDCCH region, and the DCI is used to schedule a single sPDSCH carried in the subslot with the number of 0, or the DCI is used to schedule multiple sPDSCH including the sPDSCH carried in the subslot with the number of 0;

and sending the DCI or the high-layer signaling to the terminal equipment, wherein the DCI comprises the multiplexing indication information.
The method of claim 7, wherein the subslot number 0 is a first subslot of each subframe, and wherein the PDCCH region starts at a first symbol of each subframe.
The method according to claim 7 or 8, characterized in that the method further comprises:

sending second configuration information to the terminal device, where the second configuration information is used to configure a resource block set, the resource block set is used to carry a short physical downlink control channel (sPDCCH), the DCI includes resource allocation information, the resource allocation information is used to indicate an initial sPDSCH resource of the single sPDSCH or the multiple sPDSCHs, and the indication information is used to indicate whether an overlapping portion of the initial sPDSCH resource and the resource block set can be used to transmit the sPDSCH.
The method according to any of claims 7 to 9, wherein the PDSCH resources used on the subslot with number 0 are the initial PDSCH resources.
The method according to any of claims 7 to 10, wherein the rate matching scheme for the PDSCH transmitted on the subslot numbered 0 is the same as the rate matching scheme for the first type of sPDSCH.
The method according to any of claims 7 to 11, wherein said indication information is located in said DCI, said indication information being a predefined value when said DCI is only used for scheduling a single sPDSCH carried in said subslot number 0.
A communications apparatus, comprising:

a receiving module, configured to receive first configuration information from a network device, where the first configuration information includes a physical layer multiplexing indication, where the physical layer multiplexing indication is used to indicate that a rate matching scheme of a first type of short physical downlink shared channel (sPDSCH) is indicated by physical layer signaling, and the first type of sPDSCH is an sPDSCH carried in a subslot with a number that is not 0;

the receiving module is further configured to receive downlink control information DCI from the network device, where the DCI is carried in a PDCCH region of a physical downlink control channel, and the DCI is used to schedule a single sPDSCH carried in a subslot with the number of 0, or the DCI is used to schedule multiple sPDSCH that includes the sPDSCH carried in a subslot with the number of 0;

a processing module to: when the DCI is used for scheduling the plurality of sPDSCHs including the sPDSCH carried in the subslot with the number of 0, determining a rate matching scheme of the first type of sPDSCH according to multiplexing indication information in the DCI, or determining the rate matching scheme of the first type of sPDSCH according to high-layer signaling.
The communications apparatus of claim 13, wherein the subslot number 0 is a first subslot of each subframe, and wherein the PDCCH region starts at a first symbol of each subframe.
The communications apparatus according to claim 13 or 14, wherein the receiving module is further configured to:

receiving second configuration information from the network device, where the second configuration information is used to configure a resource block set, where the resource block set is used to carry short physical downlink control channel (sPDCCH), where the DCI includes resource allocation information, where the resource allocation information is used to indicate initial sPDSCH resources of the single sPDSCH or the multiple sPDSCHs, and the multiplexing indication information or the high layer signaling is used to indicate whether an overlapping portion of the initial sPDSCH resources and the resource block set can be used to transmit sPDSCH;

the processing module is specifically configured to: and determining the rate matching mode of the first type of sPDSCH according to the multiplexing indication information and the initial sPDSCH resource or according to the high-layer signaling and the initial sPDSCH resource.
The communications apparatus of any of claims 13-15, wherein the PDSCH resources used on the subslot with number 0 are the initial PDSCH resources.
The communications apparatus according to any one of claims 13 to 16, wherein the rate matching scheme for the PDSCH transmitted on the subslot number 0 is the same as the rate matching scheme for the first type of sPDSCH.
The communications apparatus of any of claims 13-17, wherein the multiplexing indication information is located in the DCI, the multiplexing indication information being a predefined value when the DCI is used only to schedule a single sPDSCH carried in the subslot number 0.
A communications apparatus, comprising:

a sending module, configured to send first configuration information to a terminal device, where the first configuration information includes a physical layer multiplexing indicator, where the physical layer multiplexing indicator is used to indicate a rate matching manner of a first type of short physical downlink shared channel sPDSCH resource, and the first type of sPDSCH resource is an sPDSCH resource carried in a subslot with a number that is not 0;

a processing module, configured to generate multiplexing indication information or high-layer signaling, where the multiplexing indication information or the high-layer signaling is used to determine a rate matching scheme for a first type of sPDSCH resource scheduled by a downlink control information DCI, where the DCI is carried in a physical downlink control channel PDCCH region, and the DCI is used to schedule a single sPDSCH carried in the subslot with the number of 0, or the DCI is used to schedule multiple spdchs including the sPDSCH carried in the subslot with the number of 0;

the sending module is further configured to send the DCI or the high-level signaling to the terminal device, where the DCI includes the multiplexing indication information.
The communications apparatus of claim 19, wherein the subslot number 0 is a first subslot of each subframe, and wherein the PDCCH region starts at a first symbol of each subframe.
The communications apparatus according to claim 19 or 20, wherein the sending module is further configured to:

sending second configuration information to the terminal device, where the second configuration information is used to configure a resource block set, the resource block set is used to carry a short physical downlink control channel (sPDCCH), the DCI includes resource allocation information, the resource allocation information is used to indicate an initial sPDSCH resource of the single sPDSCH or the multiple sPDSCHs, and the indication information is used to indicate whether an overlapping portion of the initial sPDSCH resource and the resource block set can be used to transmit the sPDSCH.
The communications apparatus of any of claims 19-21, wherein the PDSCH resources used on the subslot numbered 0 are the initial PDSCH resources.
The communications apparatus according to any one of claims 19 to 22, wherein the rate matching scheme for the PDSCH transmitted on the subslot number 0 is the same as the rate matching scheme for the first type of sPDSCH.
The communications apparatus of any of claims 19-23, wherein the indication information is located in the DCI, the indication information being a predefined value when the DCI is used only to schedule a single sPDSCH carried in the subslot number 0.
A computer-readable storage medium, in which a program code for a communication apparatus to execute is stored, the program code comprising instructions for executing the communication method according to any one of claims 1 to 12.
A computer program product, characterized in that it comprises instructions for carrying out the communication method of any one of claims 1 to 12.