WO2020143743A1

WO2020143743A1 - Data receiving method and apparatus

Info

Publication number: WO2020143743A1
Application number: PCT/CN2020/071335
Authority: WO
Inventors: 刘显达; 刘鹍鹏; 张旭; 周永行
Original assignee: 华为技术有限公司
Priority date: 2019-01-11
Filing date: 2020-01-10
Publication date: 2020-07-16
Also published as: CN111435892B; CN111435892A

Abstract

The present application provides a data receiving method and apparatus, capable of improving data demodulation performance of a terminal device. The method comprises: a terminal device receives first resource indication information, the first resource indication information being used for indicating information that a time frequency resource occupied by each code word in at least one code word is preempted; the terminal device processes each code word in the at least one code word according to the first resource indication information.

Description

Method and device for receiving data

This application requires the priority of a Chinese patent application submitted to the State Intellectual Property Office on January 11, 2019, with application number 201910028473.5 and application name "Method and Device for Receiving Data", the entire contents of which are incorporated by reference in this application .

Technical field

The present application relates to the field of wireless communication technology, and more specifically, to a method and device for receiving data.

Background technique

In the new radio (NR), high reliability and low latency communications (ultra-reliable low latency communications, URLLC) have high requirements for low latency. From the network side, the network equipment dynamically allocates the network's time-frequency resources to URLLC users and enhanced mobile broadband (eMBB) users in real time according to its own scheduling and the needs of the users it serves. That is, for a certain time-frequency resource of the network, it can be allocated to both URLLC users and eMBB users, mainly depending on the needs of users and the scheduling of the base station.

However, it may happen that after the base station allocates a certain time-frequency resource to the eMBB user, it receives the scheduling request of the URLLC user. Due to the low latency requirement of the URLLC user, the base station may temporarily allocate the time-frequency resource that has been allocated to the eMBB user. Dispatched to URLLC users. For eMBB users, it can be said that time-frequency resources are preempted. At the same time, since the time-frequency resources are preempted and cannot be known in advance, the base station cannot inform the eMBB user in advance that the time-frequency resources are preempted. As a result, eMBB users will think that their own data is still transmitted on the time-frequency resources that have been preempted by URLLC users, and the data transmitted on the pre-empted time-frequency resources will still be demodulated and cached, resulting in caching. Problems of contamination and degradation of data demodulation performance. To this end, the NR introduces a pre-emption indication (PI) field. The PI field is carried in the cell's public downlink control information (downlink control information, DCI). The PI field is used to indicate that the eMBB user is carrying the PI field. The location of the time-frequency resource that was previously seized. The eMBB user adjusts the demodulation and buffer operation of the data according to the PI field to ensure the demodulation performance of the data.

In a coordinated multiple transmission (CoMP) scenario, multiple transmission points (transmission reception points, TRP) can simultaneously serve a user equipment (UE), and the situation in which the UE receives data becomes more flexible. For example, the serving TRP among the multiple TRPs schedules the UE to receive data through one DCI for scheduling data, or may also schedule the UE to receive data through two DCIs. TRP may instruct the UE to enable one codeword, or it may instruct the UE to enable two codewords. The data of the UE may be delivered by the serving TRP (or serving base station), or may be delivered in cooperation by multiple TRPs.

In the multi-site cooperative transmission scenario, even if the PI field is introduced, in many specific scenarios, the UE still cannot determine the transmission behavior of the network side, so it is often wrong to judge whether the time-frequency resources for sending downlink data by multiple TRPs are preempted . Therefore, the data demodulation performance of the UE is still low.

Summary of the invention

The present application provides a method for receiving data and sending data, which can improve the data demodulation performance of a terminal device in a multi-site transmission scenario.

In a first aspect, the present application provides a method for receiving data. The method includes: a terminal device receives first resource indication information, where the first resource indication information is used to indicate a time frequency occupied by each codeword in at least one codeword Information that resources are preempted; the terminal device processes each codeword in the at least one codeword according to the first resource indication information.

With reference to the first aspect, in some implementations of the first aspect, the first resource indication information is used to indicate that the time-frequency resources occupied by each codeword in the at least one codeword are preempted, including: The first resource indication information is used to indicate whether a time-frequency resource set occupied by each codeword in the at least one codeword is preempted; or, the first resource indication information is used to indicate the at least one codeword At least a part of the time-domain resources occupied by each codeword in is occupied.

With reference to the first aspect, in some implementation manners of the first aspect, the terminal device receiving the first resource indication information includes: the terminal device receives a first DCI, and the first DCI includes the first resource indication information , The first resource indication information includes a plurality of first fields, where each first field in the plurality of first fields corresponds to the at least one codeword; or, among the plurality of first fields Each first field corresponds to configuration information of at least one second DCI, and the at least one second DCI is respectively used to enable at least a part of codewords in the at least one codeword; or, among the plurality of first fields Each first field corresponds to at least one set of control resources of the second DCI, and the at least one second DCI is used to enable at least a part of the codewords in the at least one codeword, respectively.

With reference to the first aspect, in some implementations of the first aspect, the at least one codeword is scheduled by downlink control information DCI carried in a first set of control resources, and the first resource indication information is carried in the first In the control resource set; or, the at least one codeword is scheduled by DCI carried in the first control resource set, the first resource indication information is carried in the second control resource set, the first control resource set and the The second control resource set association.

With reference to the first aspect, in some implementation manners of the first aspect, the terminal device receiving the first resource indication information includes: the terminal device receives a first DCI, and the first DCI includes a first field, the first A field is used to carry the first resource indication information, and the first field also carries codeword indication information, where the codeword indication information is index information of a codeword associated with the at least one resource indication information; Alternatively, the codeword indication information is configuration information index value information of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword; or, the codeword indication information is The control resource set index value of the third DCI, the third DCI is used to enable at least a part of the codewords in the at least one codeword.

With reference to the first aspect, in some implementation manners of the first aspect, the terminal device receiving the first resource indication information includes: the terminal device receiving a plurality of first DCIs, each of the plurality of first DCIs Used to carry part of the first resource indication information; wherein, each first DCI in the plurality of first DCIs corresponds to at least one codeword in the at least one codeword; or, the multiple Each first DCI corresponds to the configuration information index value information of a plurality of fourth DCIs respectively, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword; or, the plurality of first DCIs The DCIs respectively correspond to control resource set index values of multiple fourth DCIs, and the multiple fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword.

With reference to the first aspect, in some implementations of the first aspect, the multiple first DCIs are scrambled by different RNTI sequences.

With reference to the first aspect, in some implementations of the first aspect, the at least one codeword is a plurality of codewords, and the plurality of codewords are located on the same carrier or on the same partial bandwidth; and/or The multiple fourth DCIs are located on the same carrier or on the same partial bandwidth; and/or the multiple first DCIs are located on the same carrier or on the same partial bandwidth.

With reference to the first aspect, in some implementations of the first aspect, the at least one codeword is a plurality of codewords, the reception beams of the plurality of codewords are different, and/or the quasi-preparations of the plurality of codewords The co-location QCL is different; the reception beams of the plurality of first DCIs are different, and/or the quasi-co-location QCL of the plurality of first DCIs is different.

In a second aspect, the present application provides a method for sending data. The method includes: a network end device sends at least one codeword to a terminal device; the network device determines the time-frequency resources occupied by each codeword in the at least one codeword At least a part of is preempted; the network device sends first resource indication information to the terminal device, where the first resource indication information is used to indicate information that the time-frequency resource occupied by each codeword in the at least one codeword is preempted.

With reference to the second aspect, in some implementations of the second aspect, the first resource indication information is used to indicate that the time-frequency resources occupied by each codeword in the at least one codeword are preempted, including: The first resource indication information is used to indicate whether time-frequency resources occupied by each codeword in the at least one codeword are preempted; or, the first resource indication information is used to indicate the at least one codeword At least a part of the time-domain resources occupied by each codeword of the time-domain resources are preempted.

With reference to the second aspect, in certain implementations of the second aspect, the at least one codeword is scheduled by downlink control information DCI carried in a first set of control resources, and the first resource indication information is carried in the first In the control resource set; or, the at least one codeword is scheduled by DCI carried in the first control resource set, the first resource indication information is carried in the second control resource set, the first control resource set and the The second control resource set association.

With reference to the second aspect, in some implementations of the second aspect, the network device sending the first resource indication information to the terminal device includes: the network device sending a first DCI to the terminal device, where the first DCI includes all The first resource indication information, the first resource indication information includes a plurality of first fields, wherein each first field of the plurality of first fields corresponds to the at least one codeword; or, the multiple Each of the first fields corresponds to configuration information of at least one second DCI, and the at least one second DCI is used to enable at least a part of codewords in the at least one codeword; or, the multiple Each of the first fields corresponds to at least one set of control resources of the second DCI, and the at least one second DCI is used to enable at least a part of the codewords in the at least one codeword, respectively.

With reference to the second aspect, in some implementation manners of the second aspect, the network device sending the first resource indication information to the terminal device includes the network device sending a first DCI to the terminal device, where the first DCI includes the first A field, the first field is used to carry the first resource indication information, the first field also carries codeword indication information, wherein the codeword indication information is associated with the at least one resource indication information Index information of a codeword; or, the codeword indication information is configuration information index value information of a third DCI, and the third DCI is used to enable at least a part of the codewords in the at least one codeword; or, the The codeword indication information is a control resource set index value of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword.

With reference to the second aspect, in some implementation manners of the second aspect, the network device sending the first resource indication information to the terminal device includes: the network device sending a plurality of first DCIs to the terminal device, the plurality of first DCIs Each first DCI of is used to carry a part of the first resource indication information; wherein, each first DCI of the plurality of first DCIs corresponds to at least one codeword of the at least one codeword Or, the plurality of first DCIs respectively correspond to configuration information index value information of a plurality of fourth DCIs, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword; or, The plurality of first DCIs respectively correspond to control resource set index values of a plurality of fourth DCIs, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword.

With reference to the second aspect, in some implementations of the second aspect, the multiple first DCIs are scrambled by different RNTI sequences.

With reference to the second aspect, in some implementations of the second aspect, the at least one codeword is a plurality of codewords, and the plurality of codewords are located on the same carrier or on the same partial bandwidth; and/or The multiple fourth DCIs are located on the same carrier or on the same partial bandwidth; and/or the multiple first DCIs are located on the same carrier or on the same partial bandwidth.

With reference to the second aspect, in some implementation manners of the second aspect, the at least one codeword is a plurality of codewords, the transmission beams of the plurality of codewords are different, and/or the quasi The co-location QCL is different; the transmission beams of the plurality of first DCIs are different, and/or the quasi-co-location QCL of the plurality of first DCIs are different.

In a third aspect, the present application provides an apparatus for receiving data, which has a function of implementing the method in the first aspect and any possible implementation manner thereof. The functions can be realized by hardware, or can also be realized by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a fourth aspect, the present application provides an apparatus for sending data, which has a function of implementing the method in the second aspect and any possible implementation manner thereof. The functions can be realized by hardware, or can also be realized by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a fifth aspect, the present application provides a terminal device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the method in the first aspect or any possible implementation manner of the first aspect.

Optionally, the terminal device further includes a transceiver. Further optionally, there are one or more processors. There are one or more memories.

In a sixth aspect, the present application provides a network device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the method in the second aspect or any possible implementation manner of the second aspect.

Optionally, the network device further includes a transceiver. Further optionally, there are one or more processors. There are one or more memories.

Optionally, the above memory may be integrated with the processor, or the memory and the processor are provided separately.

The above-mentioned transceiver may include a receiver and/or a transmitter.

Optionally, the aforementioned processor may be used for but not limited to baseband related processing, and the transceiver may be used for but not limited to radio frequency transceiver. The above-mentioned devices may be respectively arranged on separate chips, or at least partly or wholly on the same chip. For example, the transceiver includes a receiver and a transmitter, where the receiver and the transmitter may be disposed on a receiver chip and a transmitter chip that are independent of each other, or may be integrated into a transceiver and then disposed on the transceiver chip. For another example, the processor may be further divided into an analog baseband processor and a digital baseband processor. The analog baseband processor can be integrated with the transceiver on the same chip, and the digital baseband processor can be set on an independent chip.

In a seventh aspect, the present application provides a computer-readable storage medium that stores computer instructions, and when the computer instructions run on a computer, causes the computer to perform the first aspect or any possible implementation of the first aspect The way in the way.

In an eighth aspect, the present application provides a computer-readable storage medium that stores computer instructions, and when the computer instructions run on a computer, causes the computer to perform the second aspect or any possible implementation of the second aspect The way in the way.

In a ninth aspect, the present application provides a chip, including a processor. The processor is used to read and execute the computer program stored in the memory to execute the method in the first aspect or any possible implementation manner of the first aspect.

Optionally, the chip further includes a memory, and the memory and the processor are connected to the memory through circuits or wires.

Further optionally, the chip further includes a communication interface. The communication interface may be an interface circuit or an input-output interface.

In a tenth aspect, the present application provides a chip, including a processor. The processor is used to read and execute the computer program stored in the memory to execute the method in the second aspect or any possible implementation manner of the second aspect.

According to an eleventh aspect, the present application also provides a computer program product, the computer program product includes computer program code, and when the computer program code runs on a computer, causes the computer to perform the first aspect and any of its possible Implementation method.

In a twelfth aspect, the present application also provides a computer program product, the computer program product includes computer program code, and when the computer program code runs on a computer, the computer is allowed to perform the second aspect and any one of its possible Implementation method.

In a thirteenth aspect, the present application also provides a wireless communication system, including the terminal device according to the fifth aspect and the network device according to the sixth aspect.

In the technical solution of the present application, the network device sends first resource indication information to the terminal device, which is used to instruct the network device to send to the terminal device the information that the time-frequency resource used by each code word in the at least one code word is preempted. According to the indication of the first resource indication information, the terminal device may know the time-frequency resource occupied by each codeword in the at least one codeword is preempted, thereby ensuring that the at least one codeword is demodulated correctly And/or buffering, which can improve the data demodulation performance of the terminal device.

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of the corresponding relationship between the search space set and CORESET.

Figure 2 is a schematic diagram of scheduling data through a DCI in an ideal backhaul scenario.

FIG. 3 is another schematic diagram of scheduling data through one DCI in an ideal backhaul scenario.

4 is a schematic diagram of scheduling data through 2 DCIs in an ideal backhaul scenario.

FIG. 5 is a schematic diagram of eMBB user data being punctured for transmitting URLLC user data.

Figure 6 is a signaling design for pre-emption.

Figure 7 is an indication of PI signaling.

Fig. 8 is another indication method of PI signaling.

FIG. 9 is an example of UE demodulating data according to the PI field.

FIG. 10 is another example of UE demodulating data according to the PI field.

FIG. 11 is another example of UE demodulating data according to PI signaling.

FIG. 12 is a schematic flowchart of a method 100 for receiving data provided by the present application.

FIG. 13 is an example in which multiple first fields are associated with multiple codewords.

FIG. 14 is an example of the association between the codeword and the first resource indication information.

15 is another example of the association between the codeword and the first resource indication information.

FIG. 16 is an example of the association between multiple codewords and multiple PI fields.

FIG. 17 is another example of establishing association between multiple codewords and multiple PI signaling.

FIG. 18 is another example of establishing association between multiple codewords and multiple PI signaling.

(A) and (b) of FIG. 19 are a method for establishing association between multiple codewords and multiple PI signaling.

FIG. 20 is another way of establishing an association relationship between multiple codewords and multiple PI signaling.

FIG. 21 is another way of establishing an association relationship between multiple codewords and multiple PI fields.

22 is a schematic block diagram of a data receiving apparatus 600 provided by the present application

23 is a schematic block diagram of a data receiving apparatus 800 provided by the present application.

FIG. 24 is a schematic structural diagram of a terminal device 7000 provided by this application.

FIG. 25 is a schematic structural diagram of a network device 1000 provided by this application.

detailed description

The technical solutions in this application will be described below with reference to the drawings.

The technical solutions of the embodiments of the present application may be applied to various communication systems, including but not limited to: global mobile communication (global system for mobile communications (GSM) system, code division multiple access (code division multiple access, CDMA) system, broadband code Wideband code (division multiple access, WCDMA) system, general packet radio service (general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) System, LTE time division duplex (TDD), universal mobile communication system (universal mobile telecommunication system, UMTS), global interconnected microwave access (worldwide interoperability for microwave access, WiMAX) communication system, and the future fifth generation (WiMAX) communication system 5th generation (5G) system or new radio (NR), etc.

The terminal device in the embodiments of the present application may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or User device. Terminal devices can also be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (personal digital assistants, PDAs), and wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or public land mobile communication networks (PLMN) in the future evolution The terminal device and the like are not limited in this embodiment of the present application.

The network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a global mobile communication (global system for mobile communications, GSM) system or code division multiple access (code division multiple access, CDMA). The base station (BTS) can also be a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolved base station (evoled) in an LTE system , ENB or eNodeB), can also be a wireless controller in the cloud radio access network (cloud radio access network, CRAN) scenario, or the network device can be a relay station, access point, vehicle equipment, wearable devices and future 5G The network devices in the network or the network devices in the PLMN network that will evolve in the future are not limited in the embodiments of the present application.

In the long-term evolution LTE/LTE-A/NR system defined by the 3rd Generation Partnership Project (3GPP), the downlink multiple access method usually uses orthogonal frequency division multiplexing multiple access Access (orthogonal frequency division multiple access, OFDMA) method. Downlink resources are divided into multiple orthogonal frequency division multiple access (orthogonal frequency division multiplex, OFDM) symbols in time (time domain), and are divided into multiple subcarriers in frequency (frequency domain). Part of the time-frequency resources in the downlink is used to carry a physical downlink control channel (physical downlink control channel, PDCCH). PDCCH is used to carry downlink control information (downlink control information, DCI). DCI is the control information that the network equipment in the physical layer (Physical Layer) instructs the behavior of the user equipment (UE). At the same time, high-level signaling can also be used for control information that the network device indicates UE behavior. High-level signaling is higher than the physical layer for controlling and managing UE-related indication information, for example, radio resource control (radio resource control (RRC) signaling, etc.). Part of the time-frequency resources in the downlink is used to carry a physical downlink shared channel (PDSCH). The PDSCH is used to carry data for interaction between the user equipment and the network equipment. For all user equipment connected to the network system, the PDSCH is shared.

In the process of indicating time-frequency resources, a granularity that characterizes the size of the system's time-domain resources is a slot. For slot-based frame structure (slot-based frame structure), each slot includes 14 symbols. For non-slot-based frame structures, each slot can include 2/4/7 symbols. In addition, the granularity that characterizes the system frequency domain resource size can be defined as resource block (resource block (RB)). In some configurations, an RB contains 12 subcarriers in the frequency domain, and the bandwidth occupied by each subband wave is 15 kHz. One or more symbols can be included in the time domain. It can be understood that the granularity that characterizes the size of the time domain resources of the system is subframes, mini-slots, and so on, which is not limited in this embodiment of the present invention.

In the embodiment of the present application, the symbol is also called a time-domain symbol, which may be an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol, or a single carrier frequency division multiple access (single carrier frequency division multiple access) , SC-FDMA) symbol. SC-FDMA is also called orthogonal frequency division multiplexing (orthogonal frequency division multiplexing with transformation precoding, OFDM with TP).

Another commonly used granularity that characterizes the time-frequency resource size of the system is the resource element (resource, element). Each RE includes a subcarrier in the frequency domain and a symbol in the time domain.

In addition, a granularity that characterizes the size of the system's frequency domain resources is the bandwidth (part of bandwidth, BWP). The network device configures one or more BWPs for the UEs in its serving cell. Each BWP configuration includes a subcarrier spacing parameter, a cyclic prefix, and a continuous physical resource block occupied by the BWP. , PRB) number and the starting position of the first PRB. These parameters are configured by the network equipment through high-level signaling. At the same time, the network device will also activate one or more of the BWPs based on its configured BWP, and the UE will interact with the base station based on the activated BWP.

Before the network device performs data transmission, the network device needs to notify the terminal device through DCI to receive data in a specific receiving manner on a specific time-frequency resource. Before the terminal device performs data transmission, the network device needs to notify the terminal device through DCI to send data in a specific transmission mode on a specific time-frequency resource. The information bits of DCI are transmitted to the channel coding module and the rate matching is completed, and then the control information bits are modulated according to specific criteria, such as quadrature phase shift keying (QPSK), and finally mapped to time-frequency PDCCH is formed on the domain resource.

The time-frequency resources occupied by the PDCCH are usually configured through high-level signaling or through system messages. In the configuration process, the control resource set (control-resource set, CORESET) is used as the configuration unit. The DCI information bits indicated by the network device to the terminal device (used to schedule the terminal device to receive PDSCH/transmit PUSCH) are all carried on the PDCCH. Or it can be understood that the information bits of DCI are carried on the time-frequency resources occupied by the PDCCH. CORESET can be understood as: adopting certain specific time-frequency resources to carry DCI signaling on the time-frequency resources in the system. These specific time-frequency resources will be notified to the terminal device in advance through high-level signaling, so that the terminal device can detect DCI signaling on the specific time-frequency resource at a subsequent specific detection time. The control resource set includes time-frequency resource information used by the network device to send the PDCCH. The network device may configure one or more control resource sets for the terminal device. The network device may use any control resource set corresponding to the terminal device to The terminal device sends the PDCCH.

A set of control resources is included in the frequency domain

RBs, the number and location of the included RBs are configured through high-level signaling. The frequency domain resource configuration mode of the control resource set is indicated by a bitmap with a granularity of 6 RBs. Usually, a CORESET is indicated within a system bandwidth. At the same time, the definition of CORESET in the time domain is usually included in a slot

OFDM symbols,

The value of can be 1, 2, 3. The number and position of OFDM symbols contained in a CORESET are configured through high-level signaling.

For example, for slot-level scheduling, CORESET is usually on the first 3 OFDM symbols of a slot. For non-slot level (scheduling time-domain resources are less than one slot), In other words, CORESET can be anywhere in a slot. A terminal device can be configured with multiple CORESETs, and each CORESET can be configured with an index number (index value). Among them, CORESET index value 0 is usually used to carry system messages. The configuration information of the CORESET index is also notified by system messages or high-level signaling. Other CORESET is usually used to carry the DCI common to the cell (used to indicate the common control message of the cell) or the DCI specific to the terminal device (for example, to schedule a single propagation ( unicast) PDSCH/PUSCH). Each CORESET may be shared by multiple terminal devices in a serving cell (the network device implements the corresponding scheduling). These shared terminal devices may receive the PDCCH sent by the network device on the time-frequency resource indicated by the CORESET, and send data to the network device or receive data sent by the network device according to the PDCCH.

The reception of PDCCH needs to use the optimal receiving beam to ensure the reception performance of the signal. At the same time, the reception of PDCCH also requires the network equipment to send the corresponding demodulation reference signal (demodulation reference signal (DMRS) for channel estimation, through channel estimation terminal In order to accurately receive control information in the PDCCH, the device needs some large-scale parameters, such as delay spread, doppler shift, and receive beam, for channel estimation based on DMRS. The aforementioned receive beams and large-scale parameters are collectively referred to as quasi-co-location (quasi-co-location) (quasi-co-location, QCL) information. The quasi-co-location information is usually configured in the CORESET configuration parameter. Beam pair (Beam Pair) (BPL) is the receiving beam information. Different CORESET of a terminal device may occupy different time-frequency resources and use different receiving beams.

CORESET time-frequency resources will be further divided into multiple control channel elements (control channel elements, CCEs). A CCE corresponds to 6 resource element groups (REGs). A REG contains a physical resource block (PRB) in the frequency domain and an OFDM symbol in the time domain.

The above mainly describes the structure and configuration method of the physical resources of the PDCCH. In addition to knowing which physical resources to receive DCI on, the terminal device needs to know how to detect DCI if it wants to obtain DCI information correctly. The corresponding configuration information is called PDCCH search space set (search space set, SS set).

The type of DCI is configured in the search space set, for example, the common search space set (common search space set, CSS) corresponding to the cell's public DCI and the UE specific search space set (UE specific search space) corresponding to the UE-specific DCI set) etc.

A CORESET index number (index value) is also configured in the search space set, indicating that the Search space is associated with CORESET, that is, the DCI is detected on the CORESET time-frequency resource according to the detection method configured by the search space set. A Search space can be associated with a CORESET.

For example, referring to FIG. 1, FIG. 1 is a schematic diagram of the corresponding relationship between the search space set and CORESET. As shown in Figure 1, SS set1 indicates that the index number of the search space is 1. When the terminal device detects DCI on the time-frequency resource of CORESET1, it can perform detection according to the detection method indicated by SS set1 or SS set2. When the terminal device detects DCI on the time-frequency resource of CORESET2, it can perform detection according to the detection method indicated by SS set3. When the terminal device detects DCI on the time-frequency resource of CORESET3, it can perform detection according to the detection method indicated by SS set4.

The search space contains a set of PDCCH candidates (PDCCH candidates). A PDCCH candidate can represent the location of time-frequency resources occupied by transmitting DCI information. The terminal equipment needs to detect DCI at the corresponding time-frequency resource location; a PDCCH candidate can also represent the location The number of bits for detecting DCI at the time-frequency resource location; a PDCCH candidate can also represent the detection period for the DCI information. The number of PDCCH candidates indicates the number of blind detection (blind detection, BD) of the terminal device (corresponding to the blind detection capability of the terminal device).

For example, the terminal device can support a certain number of detection times in a certain detection cycle (such as a slot). Because each detection requires the terminal device to perform channel estimation and decoding attempts and threshold judgment for correct decoding, Therefore, each detection can be understood as consuming the processing resources of the terminal device, and the terminal device can only detect a certain number of PDCCH candidates in a certain detection period. The terminal device decodes the detected DCI information bits and parses the decoded information bits. The information bits usually contain multiple fields. The terminal device needs to determine the DCI according to the pre-defined field order and the bit length of the fields The information indicated.

The technical solution of the present application can be applied to coordinated multiple transmission (reception, CoMP). CoMP means that in downlink transmission, the UE can communicate with multiple base stations simultaneously, that is, receive data from multiple base stations simultaneously. The multiple base stations form a coordinated set and communicate with one UE at the same time. The base stations in the coordination set can be connected to different control nodes, and each control node can exchange information, for example, exchange scheduling policy information to achieve the purpose of cooperative transmission. Or, the base stations in the cooperative set are all connected to the same control node, and the control node receives channel state information reported by the base station in the cooperative set, such as channel state information (channel state information (CSI) or reference signal received power ( reference (receiving power, RSRP), and uniformly schedule the UEs in the cooperating set according to the channel state information of all UEs in the cooperating set, and then exchange scheduling strategies to the base stations connected to them. Finally, each base station notifies its respective UE through DCI carried by the PDCCH.

According to the data transmission strategy of multiple base stations in a coordinated set to a certain UE, CoMP transmission strategies may include dynamic transmission node switching (DPS), coherent transmission (C-JT) and non-coherent transmission (non-coherent transmission). -coherent joint transmission (NC-JT) There are 3 modes in total. Among them, DPS refers to a certain UE, the base station with which data transmission is dynamically switched at different transmission moments, in order to select the base station in the coordinated set with better current channel conditions for data transmission, that is, multiple base stations time-sharing Transmit data for a certain UE. C-JT means that multiple base stations simultaneously transmit data for a certain UE, and the antennas of multiple base stations perform joint precoding, that is, select the optimal precoding matrix to perform joint phase and amplitude weighting between multiple base station antennas. This mechanism The antennas of multiple base stations are required to perform accurate phase calibration, so that accurate phase weighting is performed among multiple groups of antennas. NC-JT means that multiple base stations simultaneously transmit data for a certain UE, and the antennas of these multiple base stations perform independent precoding, that is, each base station independently selects the optimal precoding matrix to perform joint phase and amplitude weighting between the base station antennas .

According to the information exchange delay between base stations, CoMP can be divided into ideal backhaul scenarios and non-ideal backhaul scenarios.

For an ideal backhaul scenario, because the distance between the base stations or between the base stations and the central node is relatively short, or rely on the fiber connection with small transmission loss, the interaction delay can be ignored. At this time, it can usually be assumed that there is a central scheduling node in the base station in the coordination set, and the central scheduling node is used for joint resource scheduling for all users in multiple base stations. The base station is responsible for receiving channel state information (channel) information (CSI) and scheduling request information fed back by the user and transmitting it to the central scheduling node through the backhaul link. The central scheduling node collects the feedback of the base station in the coordination set to complete the scheduling, and transmits the scheduling strategy back to the base station. The serving base station (serving TRP) in the coordination set sends downlink control information (downlink control information, DCI) to the user. According to the scheduling strategy, the user's data is delivered by the serving base station, or jointly delivered by the serving base station and the coordinated base station (coordinate TRP).

In an ideal backhaul scenario, the network device can use one DCI to schedule the UE to receive data. Referring to FIG. 2, FIG. 2 is a schematic diagram of scheduling data through a DCI in an ideal backhaul scenario. As shown in Figure 2, assume that TRP1 is the serving base station and TRP2 is the cooperative base station. TRP1 is responsible for delivering DCI to the UE to notify the information such as the time-frequency resources occupied by the data and the data transmission method. Among them, the data transmission method includes the number of transmission layers used by the base station to transmit data, the modulation and coding method of each codeword (codeword), and the received beam indication information. One codeword corresponds to a specific one or more transmission layers, each codeword corresponds to an independent modulation and coding method, and can dynamically indicate whether to enable or not to enable. For example, in Figure 2, two base stations each use layer 1 to transmit downlink data, then the DCI issued by TRP1 to the UE will indicate the activation of two codewords, each codeword corresponding to a specific transmission layer and a specific Receive beam indication.

Referring to FIG. 3, FIG. 3 is another schematic diagram of scheduling data through one DCI in an ideal backhaul scenario. As shown in Figure 3, TRP1 uses Layer 2 to transmit downlink data, and the DCI instruction issued by TRP enables a codeword, which corresponds to two specific transmission layers and receive beam instructions. At this time, different codewords can be sent by one base station or different base stations, that is, each codeword can correspond to one base station.

In an ideal backhaul scenario, data scheduling instructions through 2 DCIs can also be supported. Refer to FIG. 4, which is a schematic diagram of scheduling data through 2 DCIs in an ideal backhaul scenario. As shown in FIG. 4, TRP1 and TRP2 can each send a DCI, and each DCI corresponds to a time-frequency resource allocation indication and a transmission mode indication of a codeword. At this time, the UEs required to serve TRP1 and TRP2 simultaneously detect two DCIs, and receive data from TRP1 and TRP2 at the same time according to the two DCIs detected and decoded. Compared with the method of scheduling two PDSCHs with one DCI as shown in FIG. 2 and FIG. 3, the use of two DCIs by the network device can increase the scheduling flexibility without increasing the bit length of the DCI.

In the non-ideal backhaul scenario, due to the interaction delay between the base stations, performance is lost. Therefore, two base stations usually send a DCI to perform data scheduling. At this time, only semi-static interactive scheduling information is required between the base stations. The DCI delivered by each base station can at least independently indicate the resource allocation information and the modulation and coding method of the corresponding codeword and the corresponding transport layer. The schematic diagram of scheduling data through two DCIs in a non-ideal backhaul scenario is the same as that shown in FIG. 4, and reference may be made to FIG. 4.

It should be noted that if the UE detects a DCI within a slot, the current transmission is a single TRP transmission. If the UE detects two DCIs in a certain slot, the current transmission is multi-TRP transmission.

In addition, the detection of one DCI or two DCIs by the UE here means that the UE is specifically used by the UE to schedule downlink data within a certain time period (for example, a slot, or a DCI detection period of the UE) DCI. The NR supports multiple DCI formats, where USS is UE-specific control information used to indicate the UE-specific data scheduling information, and the scrambling sequence of the DCI is generated according to the cell index value and the UE index value. The DCI common to the cell is detected in the CSS and used to indicate the common scheduling information (including data scheduling information, RS information, system information, etc.) of multiple UEs served by the cell. The scrambling sequence of the DCI is generated according to the cell index value. The DCI configuration information (used to notify the DCI-bearing time-frequency resources and detection method) will indicate to multiple users served by the cell.

In addition, NR supports two types of DCI for scheduling downlink data. One is a compact DCI format, which contains only the fields necessary for scheduling data, and the other is a normal DCI format, which contains more fields for scheduling data. The length of the DCI format is usually larger than the length of the compact DCI format. In addition to DCI for scheduling downlink data, the base station can also send CSS. Specifically, during the DCI detection period, the UE can detect one DCI or two DCIs used for scheduling downlink data, and at the same time, it can also detect the information used to indicate system messages, RS trigger information, frame structure indication information, PI indication information, etc. Public DCI. When configuring the UE detection behavior, the base station configures multiple DCI formats in the configuration parameters of the search space. The UE performs multiple DCI blind detection attempts based on the multiple DCI format configuration information.

The following describes the pre-emption indication (PI) field involved in this application.

Several main scenarios supported in the new radio (NR) include high-reliability and low-latency communications (ultra-reliable low latency communications, URLLC) and enhanced mobile broadband (enhanced mobile broadband, eMBB). The frame structure based on non-slot is usually configured for URLLC users to meet the requirements of URLLC users for low latency. From the perspective of the network, the time-frequency resources of the network can be dynamically allocated to eMBB users and URLLC users in real time based on the scheduling of the base station itself and the needs of the users served by the base station, which are used to transmit data or control information. That is to say, for a certain time-frequency resource of the network, it can be used not only to send PDSCH of eMBB users, but also to send PDSCH of URLLC users. Alternatively, it may be used to simultaneously transmit the PDSCH of the eMBB user and the PDSCH of the URLLC user. For the case where the PDSCH of the eMBB user and the PDSCH of the URLLC user are transmitted at the same time, under normal circumstances, the base station will inform the eMBB user of the time-frequency resource used to transmit the PDSCH through DCI in advance. After receiving the DCI, the UE will receive the PDSCH on the corresponding time-frequency resource. After the DCI is delivered and the PDSCH is received by the user, the URLLC user may report a scheduling request (SR) to the base station. Due to the low latency requirements of URLLC users, the base station may reschedule the time-frequency resources that have been scheduled to eMBB users to URLLC users. For eMBB users, the scheduling method of the base station is pre-emption of time-frequency resources. That is, some time-frequency resources that have been scheduled for eMBB users are used to transmit URLLC user data, and eMBB user data may be punctured. Considering to reduce the interference of URLLC users, the data of eMBB users may also be contaminated. Therefore, the data of eMBB users may not be transmitted.

Generally, the time-frequency resources of the network are shared by multiple users in its serving cell. The so-called sharing means that the time-frequency resources of the network can be simultaneously scheduled to multiple users for data transmission. At this time, the multiple users may be referred to as paired users. Since the data of the paired users occupies the same time-frequency resources, it is generally necessary to ensure the transmission performance through space division multiplexing to reduce interference between the paired users. At the same time, the base station notifies each paired UE to perform corresponding demodulation reference signal measurement, so that each paired UE obtains accurate channel information corresponding to its own data transmission and interference information of the paired user. However, for the case where the PDSCH of the eMBB user and the PDSCH of the URLLC user are transmitted at the same time, the eMBB user's data will be punctured because the base station cannot notify the eMBB user that part of the time-frequency resources are preempted. Refer to FIG. 5, which is a schematic diagram of eMBB user data being punctured for transmitting URLLC user data. As shown in Figure 5, the time-frequency resources in the BWP in slot are first scheduled to eMBB users for data transmission. The eMBB data of OFDM symbol k is punctured to transmit data of URLLC users.

Since the base station cannot inform eMBB users in advance that their time-frequency resources are preempted, eMBB users will think that the actual time-frequency resources that have been preempted are still transmitting their own data, and will perform corresponding data demodulation operations and cache data bits. (For example, cache the received raw data bits, or cache the decoded bits). Among them, the data buffering operation is to combine the data received again with the data received this time if data demodulation fails this time, and then perform data reception and demodulation attempts again, thereby improving data demodulation performance. Considering the scenario where eMBB user data transmission is punctured by URLLC data, since eMBB users cannot know the operation of their time-frequency resources being punctured and the location of the punctured time-frequency resources, if the data demodulation is performed according to the scenario that is not punctured And data cache, it will significantly increase the probability of eMBB users' data detection failure, and will pollute the data cache.

In order to improve the success rate of demodulation and decoding when time-frequency resources of eMBB users are punctured, and to ensure that eMBB users cache the correct data bits, indicator signaling is introduced in NR to inform users The event that the time-frequency resource is punctured and the location of the punctured time-frequency resource when a data is received. Here, the indication signaling introduced in NR is a pre-emption indication (PI) field in DCI. Specifically, the PI field is used to indicate the location of the time-frequency resource where the eMBB user is punctured in the slot before the indication signaling.

For example, referring to FIG. 6, FIG. 6 is a signaling design for pre-emption. The base station schedules eMBB users for data transmission on a certain time-frequency resource (for example, time slot n), and the corresponding time-frequency resource is temporarily preempted by the data of the URLLC user. The eMBB user will detect the DCI carrying the PI field in a slot after the data transmission time (for example, time slot n+k). The PI field is used to indicate information that a portion of the time-frequency resources at the previous moment (from the detection of the DCI or from one or more slots before the first OFDM symbol occupied by the DCI in the time domain) are occupied. eMBB users can adjust the current data demodulation according to their own implementation algorithm according to the indication of the PI field. For example, if the original data bits are cached, the data bits on the punctured time-frequency resource are bypassed, or the data bits cached on the punctured time-frequency resource are cleared to ensure the performance of subsequent data merging.

In this application, alternatively, the PI field is also called PI signaling.

The following describes PI signaling with reference to FIGS. 7 and 8.

PI signaling is used to indicate the position information of the RB-OFDM symbol, and the indicated RB-OFDM symbol indicates that the time-frequency resources of this part are preempted. Specifically, PI signaling may include N bits, N≥1 and an integer. For example, N=14, each bit corresponds to one UE, or corresponds to one carrier of one UE (in the scenario of multi-carrier aggregation). For a UE, according to PI signaling, it is determined which of the 14 bits is used to indicate that its own data is punctured. As an example, each of the 14 bits corresponds to 14 OFDM symbols in a slot. When one of these 14 bits is 1, it means that the OFDM symbol corresponding to this bit is preempted. At the same time, the corresponding frequency band size is the entire BWP.

Refer to FIG. 7, which is an indication manner of PI signaling. For example, the 14 bits included in PI signaling are 00001111000011, and each bit corresponds to 14 OFDM symbols in a slot in turn. The OFDM corresponding to 1 is preempted, and the OFDM symbol corresponding to 0 is not preempted.

Refer to FIG. 8, which is another indication method of PI signaling. For example, the 14 bits contained in PI signaling are 00110010011001, where the first 7 bits in turn correspond to every two OFDM symbols in the first 1/2 BWP bandwidth, and the last 7 bits in turn correspond to every second OFDM symbol in the second BWP bandwidth. Two OFDM symbols. The OFDM corresponding to 1 is preempted, and the OFDM symbol corresponding to 0 is not preempted.

Under the multi-site cooperative transmission mechanism, even if the PI field is introduced, in many scenarios, the UE still cannot determine the transmission behavior of the network side, so it is often misjudged whether the time-frequency resources delivered by multiple TRPs are preempted. Therefore, the data demodulation performance of the UE is still poor.

Detailed description will be given below with reference to FIGS. 9-11.

Referring to FIG. 9, FIG. 9 is an example of the UE demodulating data according to the PI field. As shown in FIG. 9, in an ideal backhaul scenario, when the network device uses a scheduling DCI to schedule the UE to receive downlink data, when the UE receives PI signaling in a certain time slot n, the UE judges according to the PI signaling indication At time nm before time n, a certain time-frequency resource is preempted. For example, if a bit in the PI field is 1, the UE considers that the time-frequency resource corresponding to the bit is preempted. It is assumed that at time n-k (before time n-m), the UE receives DCI#1 and DCI#2 for scheduling downlink data. DCI#1 is used to schedule PDSCH#1, and DCI#2 is used to schedule PDSCH#2. PDSCH#1 and PDSCH#2 respectively correspond to the two codewords of the UE. PDSCH#1 and PDSCH#2 are sent at time n-m, and are sent by different TRPs respectively. Then, when the UE demodulates PDSCH#1 and PDSCH#2 and buffers PDSCH#1 and PDSCH#2, it is assumed that the data on the specific time-frequency resource indicated by PI signaling is punctured.

Assume that PDSCH#1 at time n-m in FIG. 9 is the data of the URLLC user and is sent by TRP1. Then the codeword of the eMBB user sent by TRP1 (such as PDSCH#1 in FIG. 9) needs to puncture the time-frequency resources occupied by the URLLC data. This is because the data of two UEs sent by the same TRP occupy the same time-frequency resources, and because the data of the URLLC user is bursty, there may be strong interference between the data of the two UEs. Therefore, in order to ensure the data demodulation performance of URLLC users, the code words of eMBB users need to be punctured. At this time, since the PI signaling indicates the time-frequency resource location occupied by URLLC user data, the UE should consider that PDSCH#1 complies with the PI signaling indication. However, for another codeword of the eMBB user sent by TRP2 (such as PDSCH#2 in Figure 9), there may be spatial orthogonality between the data of the URLLC user (sent by TRP1) and the data sent by TRP2. Therefore, the relative interference is small, and the impact on the demodulation performance is negligible.

In fact, since TRP1 does not send PDSCH#1 on the time-frequency resources preempted by URLLC users, TRP2 can send PDSCH#2 on the time-frequency resources occupied by URLLC users. However, the UE considers that PDSCH#1 complies with the PI signaling instruction and that PDSCH#2 also complies with the PI signaling instruction. Therefore, neither TRP1 nor TRP2 can send PDSCH on the preempted time-frequency resources, which reduces the spectrum efficiency of the system.

Referring to FIG. 10, FIG. 10 is another example of the UE demodulating data according to the PI field. For a non-ideal backhaul scenario, the interaction of information (eg, scheduling information) between the two TRPs is semi-static. Therefore, if TRP1 transmits URLLC data on a specific time-frequency resource, TRP2 cannot obtain scheduling information in time. Therefore, TRP2 is not aware of the situation where TRP1 transmits URLLC data on a specific time-frequency resource. At this time, PDSCH#1 transmitted by TRP1 is punctured on the specific time-frequency resource. PDSCH#2 sent by TRP2 is transmitted on the specific time-frequency resource. The UE cannot determine the transmission behavior of the network device through PI signaling. The strategy that the UE may adopt is to think that both PDSCH#1 and PDSCH#2 are punctured on this particular time-frequency resource. For PDSCH#2, it will affect its data demodulation performance.

Further, for a scenario where the network device adopts two scheduling DCIs, each DCI contains a field indicating the allocation of time-frequency resources. Then, the PDSCH scheduled by each scheduling DCI can occupy different time-frequency resources.

Referring to FIG. 11, FIG. 11 is another example of UE demodulating data according to PI signaling. As shown in FIG. 11, PDSCH#1 and PDSCH#2 occupy different bandwidths. TRP1 schedules URLLC user data in a specific OFDM symbol. At this time, for PDSCH#1, the information that the subsequent PI signaling indicates whether the OFDM symbol is preempted is 10, indicating that the first 1/2 BWP of the OFDM symbol is preempted, and the latter 1/2 BWP is not preempted. The indication of PI signaling is invalid for PDSCH#2. At this time, if the UE considers that the PI signaling indication is effective for both PDSCHs, it will seriously affect the demodulation performance of PDSCH#2.

The technical solutions of this application are introduced below.

Referring to FIG. 12, FIG. 12 is a schematic flowchart of a method 100 for receiving data provided by the present application. The method 100 mainly includes steps 110-140.

110. The network device sends at least one codeword to the terminal device. The terminal device receives at least one codeword from the network device.

Alternatively, at least one may also be expressed as one or more.

120. The network device determines that at least a part of the time-frequency resources occupied by each codeword in the at least one codeword is preempted.

130. The network device sends the first resource indication information to the terminal device. The terminal device receives the first resource indication information from the network device.

When the network device determines that at least part of the time-frequency resources of each codeword in the at least one codeword sent to the terminal device is preempted, the first resource indication information is sent to the terminal device to indicate the at least one The time-frequency resource occupied by each codeword in the codeword is preempted.

The first resource indication information is used to indicate information that the time-frequency resource occupied by each codeword in the at least one codeword is preempted.

As an implementation manner, the first resource indication information is used to indicate whether time-frequency resources occupied by each codeword in the at least one codeword are preempted.

Alternatively, the first resource indication information is used to indicate that at least a part of the time-frequency resources occupied by each codeword in the at least one codeword is preempted.

For example, the terminal device goes from the network device to the at least one codeword in time slot n. In the time slot n+k, the terminal device receives first resource indication information from the network device, and the first resource indication information is used to indicate the time-frequency resource used by each of the at least one codeword received by the terminal device Preempted information. The terminal device determines, according to the first resource indication information, information that time-frequency resources in a certain time period (for example, within a certain slot or within a certain number of slots) are preempted before the first symbol of the time slot n+k. Among them, n and k are integers, k ≥ 1. The value of k can be configured by the system. For example, the first resource indication information is used to indicate that some of the 14 symbols in the time slot n+m are preempted. Among them, the time slot n+m is located before the time slot n+k. Specifically, the first resource indication information may include at least one 14-bit, each 14-bit one-to-one correspondence with the 14 symbols of the time slot n+m, which is used to indicate that the time-frequency resource of a codeword is preempted. If a bit of the 14 bits indicating a certain codeword included in the first resource indication information is 0, it means that the symbol corresponding to the bit of the codeword is not preempted. If a bit is 1, it means that the symbol corresponding to the bit is preempted for the codeword.

In step 130, the network device sends the first resource indication information to the terminal device, which may include multiple manners. The following lists several possible implementations as examples.

Way 1

The network device sends a first DCI to the terminal device, where the first DCI includes first resource indication information, and the first resource indication information includes multiple first fields.

Optionally, the plurality of first fields correspond to the at least one codeword. Wherein, each first field in the plurality of first fields corresponds to one or more codewords in the at least one codeword.

Here, there may be a one-to-one correspondence between the plurality of first fields and the at least one codeword, that is, each first field corresponds to one codeword in the at least one codeword.

Alternatively, there may be a one-to-many relationship between the plurality of first fields and the at least one codeword. For example, each first field may correspond to multiple codewords in the at least one codeword.

It can be understood that the first field may also be expressed as the first information, or the first field. The multiple bits included in the first field may be continuous or discontinuous. Similarly, multiple first fields may be expressed as multiple first information, or multiple first fields. The multiple bits included in the multiple first fields may be continuous or discontinuous.

Referring to FIG. 13, FIG. 13 is an example of establishing association between multiple first fields and multiple code words. As shown in FIG. 13, the first DCI includes first resource indication information, and the first resource indication information includes two first fields, as shown in FIG. 13 are the first field #1 and the first field #2. Among them, the first field #1 is associated with codeword 0. The first field #2 is associated with codeword 1. If the terminal device enables codeword 0, the information that the time-frequency resource occupied by codeword 0 is preempted is determined according to the first field #1 in the first DCI. If the terminal device enables codeword 1, it determines the information that the time-frequency resource occupied by codeword 1 is preempted according to the first field #2 in the first DCI.

In a possible implementation manner, the multiple first fields included in the first resource indication information are implicitly associated with multiple codewords in sequence.

For example, the first resource indication information includes two first fields, which are first field #1 and first field #2, respectively. Among them, the first field #1 is associated with codeword 0, and the first field #2 is associated with codeword 1.

Taking PI signaling as an example, the protocol may be predefined: if the network device configures one carrier to correspond to multiple PI signalings, the multiple PI signalings sequentially correspond to one codeword.

In manner 1, the first DCI is the DCI sent by the network device and carrying the resource indication information. The first DCI is carried in a common search space (common search space, CSS). Alternatively, the first DCI is also referred to herein as a cell common DCI.

It should be understood that CSS is one type of search space, and another type of search space is called UE-specific search space (user specific search space, USS). The USS may also be called a UE-specific search space. CSS is used to carry control information (group common DCI) of multiple UEs, which are jointly detected by multiple UEs. The USS is used to carry control information (UE specific DCI) indicating a certain UE, which is detected by the specific UE.

Therefore, the first resource indication information in the first DCI may include information that time-frequency resources used by codewords of multiple UEs in the cell are preempted. Before sending the at least one codeword, the network device sends configuration information to the terminal device, where the configuration information is used to indicate the correspondence between the codeword enabled by each terminal device and multiple first fields in the first resource indication information. In other words, the network device needs to semi-statically configure the correspondence between the codeword enabled by each UE and the first field in the first resource indication information.

For example, the first resource indication information included in the first DCI includes four first fields, which are respectively denoted as Field 1, Field 2, Field 3, and Field 4. The network device instructs UE 1 that codeword 0 and codeword 1 enabled are associated with field 1 and field 2, respectively. Codeword 0 and codeword 1 enabled by UE2 are associated with field 1 and field 3, respectively. Codeword 0 and codeword 1 enabled by UE3 are associated with field 1 and field 4, respectively. Codeword 0 enabled by UE 4 is associated with field 3.

Each UE receives configuration information from the network device and determines its own first field. When the UE receives the first DCI, it obtains its own first field from the multiple first fields included in the first resource indication information included in the first DCI, and compares the slave network device according to its own first field The received codeword is processed.

Optionally, each first field in the plurality of first fields corresponds to configuration information of at least one second DCI, and the at least one second DCI is respectively used to enable at least a part of codes in the at least one codeword word.

It should be noted that the second DCI here is the DCI sent by the network device to instruct the terminal device to enable the codeword. Alternatively, the second DCI may also be regarded as DCI for scheduling downlink data.

Optionally, the second DCI is used to indicate one or more codewords among the at least one codeword described in step 110. That is, the second DCI may be used to indicate that a part of the at least one codeword is enabled.

Here, each first field in the plurality of first fields corresponds to configuration information of at least one second DCI, for example, each first field in the plurality of first fields corresponds to configuration information index of at least one second DCI .

In addition, the first field and the second DCI may have a one-to-one correspondence, or a one-to-many relationship. For example, a first field corresponds to configuration information of a second DCI. Alternatively, one first field may also correspond to multiple second DCI configuration information.

When configuring the configuration information of the first field and the second DCI to correspond, as a specific implementation manner, each first field of the plurality of first fields may be configured to correspond to at least one control resource set of the second DCI.

For example, each first field in the plurality of first fields corresponds to at least one control resource set index of the second DCI.

Way 2

The network device sends a first DCI to the terminal device, where the first DCI includes a second field, and the second field is used to carry the first resource indication information. Wherein, the second field also carries codeword indication information, and the codeword indication information is used to indicate index information of the at least one codeword.

In manner 2, the second field of the first DCI uses codeword indication information to explicitly indicate the codeword associated with the first resource indication information carried in the second field.

As an optional implementation manner, the codeword indication information may be index information of the at least one codeword. For example, the codeword indication information may be an index value of the at least one codeword. Or, the codeword indication information is the index value of each codeword and the number of associated codewords. Or, it can be other representations.

Referring to FIG. 14, FIG. 14 is an example of the association between the codeword and the first resource indication information. As shown in FIG. 12, assume that the second field of the first DCI contains a total of 15 bits. Among them, the first 14 bits are the first resource indication information, and the last bit is the codeword indication information. The codeword indication information may identify the index value of the codeword associated with the first resource indication information. For example, if the last bit of the second field is 0, it means that the codeword associated with the first resource indication information is codeword 0 (CW0). If the last bit of the second field is 1, it means that the codeword associated with the first resource indication information is codeword 1 (CW1). It can be understood that the embodiment of the present invention does not limit the sequence of the first resource indication information and the codeword indication information.

For another example, when the codeword indication information is 0, it indicates that the first resource indication information is associated with codeword 0 and codeword 1. When the codeword indication information is 1, it indicates that the first resource indication information is associated with the codeword 0.

Referring to FIG. 15, FIG. 15 is another example of the association between the codeword and the first resource indication information. As shown in FIG. 15, it is assumed that the second field of the first DCI contains a total of 16 bits, of which the first 14 bits are first resource indication information, and the last two bits are codeword indication information. Wherein, the last two bits can carry the index values of codeword 0 and codeword 1, respectively, indicating that the first resource indication information is associated with both codeword 0 and codeword 1.

For another example, when the codeword indication information is 00, it indicates that the first resource indication information is associated with both codeword 0 and codeword 1. When the code word indication information is 01, it indicates that the first resource indication information is associated with the code word 0. When the codeword indication information is 10, it indicates that the first resource indication information is associated with codeword 1.

As an example, the codeword indication information may be set in the most significant bit or the least significant bit of multiple bits included in the second field. For example, in FIG. 14 or FIG. 15, the code word indication information is set in the lowest bit of the second field.

As another optional implementation manner, the codeword indication information is configuration information index information of the third DCI. The third DCI is a DCI used to instruct the terminal device to enable codewords.

Optionally, the third DCI is used to instruct the terminal device to enable one codeword or multiple codewords.

Further, the codeword indication information may specifically be index information of the control resource set of the third DCI. For example, the codeword indication information is the index value of the third DCI control resource set.

Way 3

The network device sends multiple first DCIs to the terminal device, and each of the multiple first DCIs is used to carry a part of the information in the first resource indication information.

Referring to FIG. 16, FIG. 16 is another example of the association between the codeword and the first resource indication information. As shown in FIG. 16, it is assumed that the first resource indication information includes 14 bits, and the 14 bits are divided into two parts of upper 7 bits and lower 7 bits. For each part, each bit is used to indicate whether adjacent symbols are preempted. For example, in the upper 7 bits, the bit corresponding to index 0 indicates whether symbol 0 and symbol 1 in a certain slot (hereinafter referred to as slot) are preempted. The bit corresponding to index 1 indicates whether symbol 2 and symbol 3 in slot are preempted. By analogy, the bit corresponding to index 6 indicates whether the symbols 12 and 13 in the slot are preempted. The lower 7 bits are the same. At the same time, the upper 7 bits are associated with codeword 0, and the lower 7 bits are associated with codeword 1.

The network device sends two first DCIs to the terminal device, and one of the two first DCIs is used to carry the upper 7 bits of the first resource indication information. The other first DCI is used to carry the lower 7 bits of the first resource indication information. After receiving the two first DCIs, the terminal device can know whether the time-frequency resources occupied by the codeword 0 are preempted in the slot and which of the 14 symbols contained in the slot are preempted. For example, for the upper 7 bits associated with codeword 0, if the bit corresponding to an index is 0, it means that the two symbols corresponding to the index in slot are not preempted. If the bit corresponding to an index is 1, it means that the two symbols corresponding to the index in slot are preempted. According to another first DCI, the terminal device can determine the time-frequency resource occupied by the codeword 1 is preempted.

Optionally, each first DCI in the plurality of first DCIs corresponds to at least one codeword in the at least one codeword.

As an optional implementation manner, the multiple first DCIs correspond to multiple fourth DCI configuration information index information, respectively. For example, the plurality of DCIs correspond to the configuration information index values of the plurality of fourth DCIs, respectively.

Here, the plurality of fourth DCIs are DCIs sent by the network device to instruct the terminal device to enable codewords. Optionally, each fourth DCI is used to instruct the terminal device to enable one codeword or multiple codewords.

It should be understood that the second DCI, the third DCI, and the fourth DCI are all DCIs sent by the network device to instruct the terminal device to enable the codeword. The second DCI, the third DCI, and the fourth DCI can also be regarded as DCI for scheduling data. Among them, the numbers "Second", "Third" and "Fourth" are only for the sake of clarity in description. Hereinafter, the DCI for scheduling data is also referred to as data DCI or scheduling DCI.

In the case where the network device sends multiple first DCIs to the terminal device, the multiple first DCIs are scrambled through different wireless network temporary identities (RNTI).

Optionally, in the above embodiments, when the at least one codeword is specifically multiple, the multiple codewords are located on the same carrier or on the same partial bandwidth, and/or, the multiple The four DCIs are located on the same carrier or the same bandwidth, and/or, the plurality of first DCIs are located on the same carrier or the same partial bandwidth.

Further, when the above-mentioned at least one codeword is specifically multiple, the received beams of the multiple codewords are different, and/or the quasi-co-located (QCL) of the multiple codewords is different.

The multiple first DCIs have different receive beams, and/or the multiple first DCIs have different QCL.

140. The terminal device processes the at least one codeword according to the first resource indication information.

In step 140, the terminal device processes the at least one codeword according to the first resource indication information. For example, the terminal device may bypass the data bits on the preempted time-frequency resource according to the first resource indication information. The data received on the time-frequency resources occupied by one codeword is demodulated, or the data bits on the preoccupied time-frequency resources are cleared to ensure the performance of subsequent data combining.

In the technical solution of the present application, the network device sends first resource indication information to the terminal device to indicate that the time-frequency resource used by each of the at least one codeword sent by the network device to the terminal device is preempted Information. According to the indication of the first resource indication information, the terminal device may know the time-frequency resource occupied by each codeword in the at least one codeword is preempted, thereby ensuring that the at least one codeword is demodulated correctly And/or buffering, which can improve the data demodulation performance of the terminal device.

In addition, the UE determines the information that the time-frequency resources used by the data scheduled by each TRP in the multi-site transmission mechanism are preempted according to the first resource indication information, which can ensure that the UE correctly caches data bits and avoids the cache from being polluted.

The following describes examples of the present application.

It is assumed that the network device configures the UE to detect multiple cell common DCIs of the same format within a cell common DCI detection time period. Correspondingly, the UE considers that it is necessary to detect multiple cell common DCIs (group common DCI) in the same format within a cell public DCI detection period (that is, within one detection period of the cell public DCI), in which multiple same formats The common DCI of the cell indicates that the DCI indicates the same type of control information.

The network device configures multiple common search spaces for the UE, respectively carrying multiple DCIs of multiple cells. The common DCIs of the multiple cells all contain information indicating that the time-frequency resources occupied by the codewords enabled by the UE are preempted. A one-to-one correspondence relationship is established between public DCIs of multiple cells and multiple scheduling DCIs. According to the association relationship, the UE judges that the PDSCH scheduled by each scheduling DCI is associated with the PI field carried in the public DCI of the cell associated with the scheduling DCI, and determines the time-frequency resource used by the data scheduled by the scheduling DCI according to the PI field. Preempted information. When the PI resource indicates that a certain time-frequency resource is preempted, the UE may clear the data on the pre-empted time-frequency resource. Therefore, the cache can be prevented from being polluted, and the performance of subsequent data merger can be guaranteed.

Specifically, the network device may configure multiple CSSs for the UE, and the multiple CSSs respectively carry scrambling sequences corresponding to two common search spaces of the common DCIs of the multiple cells, which are generally different.

Further, the multiple CSSs are respectively associated with different common PDCCH configurations. For example, the multiple CSSs are respectively associated with different common PDCCH configuration index values. Among them, the common PDCCH configuration includes system messages of the own cell and configuration parameters related to CSS.

Or, the multiple CSSs are respectively associated with different sets of control resources. Specifically, the multiple CSSs are respectively associated with index values of different control resource sets.

This association relationship is applicable to network devices that use one scheduling DCI or two scheduling DCIs for downlink data scheduling.

(1) The network equipment uses one NCJT scenario with DCI scheduling for downlink data scheduling.

In the NCJT scenario where the network device uses one DCI for scheduling, the following two situations may be included.

Situation 1

Both codewords of the UE are enabled.

For the UE, the UE considers that the two codewords that are enabled follow the indication of the PI field associated therewith, respectively. For the network device, the network device will send the cell common DCI carrying the PI field to the UE according to the configuration information corresponding to the PI field associated with each codeword.

It should be noted that the applicable condition of case 1 is that the indication information of the spatial beam (spatial QCL) corresponding to the two codewords is different.

Situation 2

The UE only enables one codeword.

For the UE, the UE considers that the enabled codeword only follows the indication of the PI field associated with it. The network device sends the PI field to the UE according to the configuration information corresponding to the PI field associated with the enabled codeword.

Optionally, as a possible implementation, the protocol may also specify that the UE assumes that the enabled codeword can follow the indication of any PI field. At this time, the base station may send the cell DCI carrying the PI field according to the configuration information corresponding to any PI field.

(2) The network equipment adopts two NCJT scenarios for DCI scheduling for downlink data scheduling.

In the NCJT scenario where the network device uses two DCIs for scheduling, it is considered that two scheduling DCIs may use different PDCCH configurations, for example, two scheduling DCIs correspond to different PDCCH configuration index values, respectively. Or, the two scheduled DCIs may correspond to different sets of control resources respectively, for example, the two scheduled DCIs correspond to the index values of different sets of control resources, respectively. Therefore, the association between the codeword and the PI field can be established in the following two ways:

The DCI scheduling PDCCH configuration is associated with the PDCCH configuration of the cell common DCI carrying the PI field; or,

The control resource set of the scheduling DCI is associated with the control resource set of the common DCI of the cell carrying the PI field.

In a possible implementation, the protocol may stipulate that when the cell DCI carrying the PI field and the scheduled DCI are configured in the same control resource set, the UE only determines according to the indication of the PI field in the same control resource set The situation where the time-frequency resources used by downlink data are preempted.

Referring to FIG. 17, FIG. 17 is an example of establishing association between multiple codewords and multiple PI fields. As shown in Figure 17, both DCI#1 and PI#1 are configured in CORESET#1, then the UE determines a specific time-frequency resource according to the instruction of PI#1 for PDSCH#1 scheduled by DCI#1 Was preempted. At the same time, both DCI#2 and PI#2 are configured in CORESET#2, then the UE determines that a specific time-frequency resource is preempted for PDSCH#2 scheduled by DCI#2 according to the instruction of PI#2.

In another possible implementation, the protocol may specify that PI indication signaling may be configured in a different set of control resources than DCI used for downlink data scheduling. In this case, the set of control resources where the PI indication signaling is located is used. An association relationship is established in the control resource set where the DCI for downlink data scheduling is located, and the UE determines the UE-specific DCI indication in the control resource set only according to the time-frequency resources indicated by the PI indication signaling in the control resource set that has the association relationship Whether the data is occupied on this time-frequency resource.

Referring to FIG. 18, FIG. 18 is another example of establishing association between multiple codewords and multiple PI signaling. As shown in FIG. 18, there is an association relationship between CORESET#1 and CORESET#2. There is an association between CORESET#3 and CORESET#4. If DCI#1 is configured in CORESET#1 and PI#1 is configured in CORESET#2, the UE determines a specific time-frequency resource according to the instruction of PI#1 for PDSCH#1 scheduled by DCI#1 Was preempted. For another example, if DCI#2 is configured in CORESET#3 and PI#2 is configured in CORESET#4, the UE determines a specific time-frequency resource for the PDSCH# scheduled by DCI#2 according to the instruction of PI#2 2 is preempted.

In the existing solution, for the PI field carried in the common DCI of the same cell, in a detection cycle, only one network device will be configured, and only one UE will be detected. For the UE, the UE considers that the detected time-frequency resource indicated by the PI field is preempted for all downlink data of the UE, resulting in incorrectly buffered data and poor demodulation performance. In the technical solution of the present application, through multiple first fields of the first resource indication information, the network device may indicate that the time-frequency resources used by each TRP scheduled downlink data are preempted, thereby ensuring that the UE can correctly interpret Reconcile cache data.

The following gives some examples for the ideal backhaul scenario and the non-ideal backhaul scenario, respectively.

1. Applicable to both ideal backhaul scenarios and non-ideal backhaul scenarios.

The user believes that within the detection period (period) of a cell's public DCI, two cell DCIs (group common DCI) of the same format need to be detected, where two cell DCIs of the same format indicate that the DCI indicates the same type of control information. Correspondingly, the base station configures the UE to detect two cell DCIs in the same DCI format within a time period (such as a slot). The specific configuration method is that the base station configures the UE with at least two common search spaces, each carrying two cells' common DCI, and the CRC check bits attached to the control information bits carried in the two common search spaces are all from the same group Choose a radio network temporary identity (RNTI) for scrambling, and the scrambling sequences corresponding to the two common search spaces are usually different. The two common search spaces are respectively associated with different common PDCCH configurations (or index values of PDCCH configurations), wherein the common PDCCH configuration includes configuration parameters related to system messages of the cell and common search spaces; or, the two common search spaces The search space is associated with different control resource sets (control resource sets) or the index values of the control resource sets.

The public DCI of the two cells establishes a one-to-one association relationship with the two codewords. The establishment of the association relationship can be pre-defined by protocol or configured by high-level signaling. For example, codeword number 0 and codeword number 1 correspond to different The common PDCCH configuration (or index value) or corresponding to different control resource sets (or index values) respectively, the association relationship is applicable to adopting 1/2 DCI for downlink data scheduling (hereinafter collectively referred to as data DCI). The cell common DCI is used to indicate PI indication information. In particular, for an NCJT scenario that uses one DCI for downlink data scheduling, there are two cases.

When both codewords are enabled, the UE assumes that the enabled codeword only complies with the PI indication associated with it. At this time, the base station sends PI according to the configuration information corresponding to the PI indication associated with it. Further, the condition of the foregoing implementation manner is that the spatial beam (Spatial QCL) indication information corresponding to the two codewords is different. When the spatial beam (Spatial QCL) indication information corresponding to the two codewords is the same, the UE can assume that the two codewords follow any PI indication. In this case, the base station can send PI according to the configuration information corresponding to the arbitrary PI indication.

When only one codeword is enabled, the protocol may specify that the UE assumes that the enabled codeword only complies with the PI indication associated with it. At this time, the base station sends PI according to the configuration information corresponding to the PI indication associated with it. The protocol may also specify that the UE assumes that the enabled codeword complies with any PI indication. In this case, the base station may send PI according to the configuration information corresponding to any PI indication.

For an NCJT scenario using 2 DCIs for downlink data scheduling, considering that 2 DCIs for downlink data scheduling may use different PDCCH configurations (or index values) or correspond to different control resource sets (or index values), respectively The association relationship may be established through the downlink data scheduling DCI PDCCH configuration and common PDCCH configuration, or may be established through downlink data scheduling DCI control resource sets and common DCI control resource sets.

Two possibilities:

(1) Definition in the protocol: When PI indication signaling and DCI used for downlink data scheduling are configured in the same control resource set, the UE only determines according to the time-frequency resources indicated by the PI indication signaling in the same control resource set Whether the data indicated by the UE-specific DCI in the control resource set is occupied on the time-frequency resource. See the illustration in Figure 17.

In other words, PI indication signaling is used to indicate whether time-frequency resources occupied by each codeword in at least one codeword are occupied, the PI indication signaling is carried in a set of control resources, and the at least one codeword DCI scheduling carried in the set of control resources.

For example, the at least one codeword is scheduled by DCI carried in the first set of control resources, and the PI indication signaling is carried in the first set of control resources. PI indication signaling is an example of the first resource indication information above.

(2) Definition in the protocol: PI indication signaling can be configured in different control resource sets with DCI used for downlink data scheduling. At this time, the control resource set where the PI indication signaling is located and the DCI used for downlink data scheduling are located. The control resource set of the UE establishes an association relationship. The UE determines the data indicated by the UE-specific DCI in the control resource set on the time-frequency resource only according to the time-frequency resource indicated by the PI indication signaling in the control resource set where the association relationship exists. Whether it is occupied. See the illustration in Figure 18.

In other words, PI indication signaling is used to indicate whether time-frequency resources occupied by each codeword in at least one codeword are occupied, the PI indication signaling is carried in a set of control resources, and the at least one codeword It is scheduled by DCI carried in another set of control resources, where the set of control resources carrying PI indication signaling is associated with the set of control resources carrying DCI.

For example, the at least one codeword is scheduled by DCI carried in a first set of control resources, the PI indication signaling is carried in a second set of control resources, the first set of control resources and the second set of control resources Related. PI indication signaling is an example of the first resource indication information above.

In the prior art, for indication information common to the same cell, the base station will only configure/indicate one in one detection period, and the UE will only detect one; for PI indication information, the UE will consider the time and frequency indicated by the PI indication information The information that resources are occupied takes effect for all data scheduled by the UE.

In this application, for the common indication information of the same cell, the base station will configure/indicate multiple in one detection period, and the UE will detect multiple; for the PI indication information, the UE will consider the time-frequency resources indicated by the PI indication information The occupied information is only valid for the data indicated by the DCI scheduling downlink data associated with the indication information.

2. Mainly applicable to ideal-backhaul scenarios.

That is, assuming that there is a central scheduling node between multiple stations, it is considered that the cooperative interaction delay between multiple stations is short, and real-time scheduling coordination can be performed. Code indication information (for single DCI scenarios) or PDCCH configuration indication information (for multiple DCI scenarios) is added to the PI indication field in the cell common DCI, and each PI indication field corresponds to a different code word or PDCCH configuration indication. For example, there are N PI indication fields in the common DCI, and the base station may configure the UE to decode one or more PI indication fields among the N PI indication fields.

When the base station is configured to decode only one PI indication field, 1-2 bits of codeword/PDCCH configuration information indicating that the PI indication field functions are added to the PI indication field. For example, the first 14 bits of the PI indication field are used to indicate occupied time-frequency resources according to the existing design. In the PI indication field, 1-2 bits are added after the first 14 bits to indicate the corresponding occupied time-frequency resources indicated by the 14 bit Codeword index value, or corresponding PDCCH configuration index value (where each PDCCH configuration index value corresponds to one PDCCH configuration information, including time-frequency resources occupied by PDCCH and detection decoding method, such as detection period, DCI format, aggregation level Etc.), or the index value corresponding to CORESET (at this time, it is considered that at least one different codeword is scheduled for each data DCI and carried in a CORESET, respectively).

For example, as shown in FIG. 19, (a) and (b) of FIG. 19 are a method for establishing association between multiple codewords and multiple PI signaling. The added indication information (1-2 bits) can be the highest bit in each PI indication field, or the lowest bit in the PI indication field. Among them, the way to add 1bit is: the bit indication "0" indicates that the PI indication field is valid for all codewords, the bit indication "1" indicates that the PI indication field is effective for codeword 0; the way to add 2bit is : The bit indication "00" indicates that the PI indication field is valid for all codewords, the bit indication "01" indicates that the PI indication field is effective for codeword 0, and the bit indication "10" indicates the PI indication field Effective for codeword 1. Another way of indicating is that compared with the existing PI indicating field, no bit is added, all bits of the PI indicating field can be split into two parts, each bit corresponds to a code word, and at the same time, each part is reduced The resolution of the time-frequency resource indication (this method affects the accuracy of the indication but ensures that the number of bits remains unchanged).

As shown in FIG. 20, FIG. 20 is another way of establishing an association relationship between multiple codewords and multiple PI signaling. The existing PI indicator field is split into two parts, the upper 7 bits and the lower 7 bits. For each part, each bit corresponds to an indication of whether two adjacent OFDM symbols are occupied (compared to the original PI indication. Resolution of time-frequency resources).

When the base station is configured to decode multiple PI indicator fields, the base station needs to further indicate the codeword index values corresponding to the multiple PI indicator fields. One way is to indicate the codeword index value corresponding to each PI indication field or the corresponding PDCCH configuration information index value or CORESET configuration index value through high layer signaling. Another way is to predefine that if the base station configures one carrier to correspond to multiple PI indication fields, each PI indication field sequentially corresponds to a code word.

As shown in FIG. 21, FIG. 21 is another way of establishing an association relationship between multiple codewords and multiple PI fields. If the network is configured with one carrier corresponding to two PI fields, these two PI fields correspond to two codewords, respectively. According to the order of the PI fields, PI field 1 corresponds to code word 0, and PI field 2 corresponds to code word 1. The terminal device determines the time-frequency resources used by the two codewords according to the two PI fields.

In this application, for the indication information common to the same cell, the base station will indicate the codeword information corresponding to the PI indication field within a detection period, and the UE will consider that the time-frequency resources indicated by the PI indication information are occupied only for the information The data indicated by the DCI scheduling downlink data associated with the indication information takes effect.

The method for receiving data provided by the present application has been described in detail above, and the device for receiving data and the device for transmitting data provided by the present application are described below.

Referring to FIG. 22, FIG. 22 is a schematic block diagram of an apparatus 600 for receiving data provided by the present application. The device 600 includes a processing unit 610 and a transceiver unit 620.

The transceiver unit 610 is configured to receive first resource indication information, where the first resource indication information is used to indicate information that time-frequency resources occupied by each codeword in at least one codeword are preempted;

The processing unit 620 is configured to process each codeword in the at least one codeword according to the first resource indication information.

In a possible implementation, the transceiver unit 610 is specifically configured to receive a first DCI, where the first DCI includes the first resource indication information, and the first resource indication information includes multiple first fields ,among them,

Each first field in the plurality of first fields corresponds to the at least one codeword; or,

Each first field in the plurality of first fields corresponds to configuration information of at least one second DCI, and the at least one second DCI is respectively used to enable at least a part of codewords in the at least one codeword; or,

Each first field in the plurality of first fields corresponds to at least one set of control resources of the second DCI, and the at least one second DCI is used to enable at least a part of the codewords in the at least one codeword, respectively.

In a possible implementation manner, the transceiver unit 610 is specifically configured to receive a first DCI. The first DCI includes a first field, and the first field is used to carry the first resource indication information. The first field also carries codeword indication information, where,

The codeword indication information is index information of a codeword associated with the at least one resource indication information;

Or, the codeword indication information is configuration information index value information of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword;

Alternatively, the codeword indication information is a control resource set index value of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword.

In a possible implementation, the transceiver unit 610 is specifically configured to receive multiple first DCIs, and each first DCI in the multiple first DCIs is used to carry a part of the first resource indication information ;among them,

Each first DCI in the plurality of first DCIs corresponds to at least one codeword in the at least one codeword;

Alternatively, the plurality of first DCIs respectively correspond to configuration information index value information of a plurality of fourth DCIs, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword;

Alternatively, the plurality of first DCIs respectively correspond to control resource set index values of a plurality of fourth DCIs, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword.

Optionally, the transceiving unit 610 may be a transceiver, and the transceiver 610 has functions of sending and/or receiving. The transceiver may also be replaced by a receiver and/or a transmitter.

Alternatively, the transceiver unit 610 may be a communication interface. Specifically, the communication interface may include an input interface and/or an output interface, or the communication interface may also be an interface circuit.

Alternatively, the processing unit 620 may be a processor. Alternatively, the processing unit 620 may be a processing device, and the functions of the processing device may be partially or fully implemented by software.

In a possible implementation, the functions of the processing device may be partially or fully implemented by software. At this time, the processing apparatus may include a memory and a processor, where the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform the steps internally implemented by the terminal device in the method embodiment. For example, the steps performed by the processing unit 620 described above are performed.

In a possible implementation manner, the processing device may be a processor. The memory for storing the computer program is located outside the processing device, and the processor is connected to the memory through a circuit/wire to read and execute the computer program stored in the memory.

In specific implementation, the processing device may be a chip or an integrated circuit.

Referring to FIG. 23, FIG. 23 is a schematic block diagram of an apparatus 800 for receiving data provided by the present application. The device 800 includes a processing unit 810 and a transceiver unit 820.

The transceiver unit 810 is configured to send at least one codeword to the terminal device;

The processing unit 820 is configured to determine that at least a part of the time-frequency resources occupied by each codeword in the at least one codeword is preempted;

The transceiver unit 810 is configured to send first resource indication information to the terminal device, where the first resource indication information is used to indicate information that time-frequency resources occupied by each codeword in the at least one codeword are preempted.

In a possible implementation, the transceiver unit 810 is specifically configured to send a first DCI, where the first DCI includes the first resource indication information, and the first resource indication information includes multiple first fields ,among them,

In a possible implementation manner, the transceiving unit 810 is specifically configured to send a first DCI. The first DCI includes a first field, and the first field is used to carry the first resource indication information. The first field also carries codeword indication information, where,

Alternatively, the codeword indication information is configuration information index value information of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword;

In a possible implementation, the transceiving unit 810 is specifically configured to send multiple first DCIs, and each first DCI in the multiple first DCIs is used to carry a part of the first resource indication information ;among them,

Optionally, the transceiving unit 810 may be a transceiver. The transceiver 810 has functions of sending and/or receiving. The transceiver may also be replaced by a receiver and/or a transmitter.

Alternatively, the transceiver unit 810 may be a communication interface. Specifically, the communication interface may include an input interface and/or an output interface, or the communication interface may also be an interface circuit.

Alternatively, the processing unit 820 may be a processor. Alternatively, the processing unit 820 may be a processing device, and the functions of the processing device may be partially or fully implemented by software.

In a possible design, the functions of the processing device may be partially or fully implemented by software. At this time, the processing apparatus may include a memory and a processor, where the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform the steps internally implemented by the terminal device in the method embodiment. For example, the steps described above by the processing unit 820 are performed.

In a possible design, the processing device may be a processor. The memory for storing the computer program is located outside the processing device, and the processor is connected to the memory through a circuit/wire to read and execute the computer program stored in the memory.

Referring to FIG. 24, FIG. 24 is a schematic structural diagram of a terminal device 7000 provided by the present application. As shown in FIG. 24, the terminal device 7000 includes a processor 7001 and a transceiver 7002. Optionally, the terminal device 7000 further includes a memory 7003. Among them, the processor 7001, the transceiver 7002, and the memory 7003 can communicate with each other through an internal connection channel to transfer control and/or data signals. The memory 7003 is used to store a computer program, and the processor 7001 is used to call and run the computer program from the memory 7003 to control the transceiver 7002 to transmit and receive signals.

Optionally, the terminal device 7000 may further include an antenna 7004 for sending information or data output by the transceiver 7002 through a wireless signal.

The processor 7001 and the memory 7003 may be combined into one processing device. The processor 7001 is configured to execute the program code stored in the memory 7003 to implement the above-mentioned functions. During specific implementation, the memory 7003 may also be integrated in the processor 7001 or independent of the processor 7001.

The processor 7001 may be used to perform the actions described in the foregoing method embodiments that are internally implemented by the terminal device, and the transceiver 7002 may be used to perform the actions described in the previous method embodiments that are performed by the terminal device to be received or sent.

For example, the transceiver 7002 is used to receive the first resource indication information from the network device. The processor is configured to process at least one codeword indicated by the first resource indication information according to the first resource indication information. The first resource indication information is used to indicate information that the time-frequency resource occupied by each codeword in at least one codeword is preempted.

For another example, the transceiver 7002 is used to receive the first DCI or multiple first DCIs from the network device.

Optionally, the terminal device 7000 may further include a power supply 7005 for providing power to various devices or circuits in the terminal device.

In addition, in order to make the functions of the terminal device more perfect, the terminal device 7000 may further include one or more of an input unit 7006, a display unit 7007, an audio circuit 7008, a camera 7009, a sensor 610, and the like. The audio circuit may further include a speaker 70082, a microphone 70084, and the like.

In addition, the present application also provides a network device 1000, which will be described below in conjunction with FIG. 22.

Referring to FIG. 25, FIG. 25 is a schematic structural diagram of a network device 1000 provided by this application. The network device 1000 is used to implement the function of the first IAB node in the method embodiment. As shown in FIG. 21, the network device 1000 includes an antenna 1101, a radio frequency device 1102, and a baseband device 1103. The antenna 1101 is connected to the radio frequency device 1102. In the upstream direction, the radio frequency device 1102 receives the signal sent by the terminal device through the antenna 1101, and sends the signal sent by the terminal device to the baseband device 1103 for processing. In the downlink direction, the baseband device 1103 processes the signal that needs to be sent to the terminal device, and sends it to the radio frequency device 1102. The radio frequency device 1102 processes the signal and sends it to the terminal device via the antenna 1101.

The baseband device 1103 may include one or more processing units 11031. In addition, the baseband device 1103 may further include a storage unit 11032 and a communication interface 11033. The storage unit 11032 is used to store programs and data. The communication interface 11033 is used to exchange information with the radio frequency device 1102. The communication interface 11033 may be an input-output interface or an input-output circuit.

The network device 1000 in the above apparatus embodiment may completely correspond to the network device in the method embodiment, and the corresponding unit included in the network device 1000 is used to perform the corresponding step performed by the network device in the method embodiment.

For example, the radio frequency device 1102 is used to transmit at least one codeword. The baseband device 1103 is configured to determine that at least a part of time-frequency resources occupied by each codeword in the at least one codeword is preempted. The radio frequency device 1102 is also used to send the first resource indication information. For another example, the radio frequency device is used to transmit one first DCI or multiple first DCIs.

In addition, the present application also provides a communication system, including the terminal device and the network device in the foregoing method embodiments.

The present application also provides a computer-readable storage medium that stores a computer program on the computer-readable storage medium, and when the computer program is executed by a computer, causes the computer to perform the steps performed by the terminal device in any method embodiment and /Or process.

The present application also provides a computer program product, the computer program product including computer program code, when the computer program code runs on a computer, causing the computer to perform any method embodiment of the steps performed by the terminal device and/or Process.

The present application also provides a chip including a processor. The memory for storing the computer program is provided independently of the chip, and the processor is used to execute the computer program stored in the memory to perform the steps and/or processes performed by the terminal device in any method embodiment. Optionally, the chip may further include the memory.

Further, the chip may further include a communication interface. The communication interface may be an input/output interface, an input/output circuit (that is, an interface circuit), or the like.

Further, the chip may further include a processor and a communication interface. The communication interface may be an input/output interface, an input/output circuit (that is, an interface circuit), or the like.

The present application also provides a computer-readable storage medium that stores a computer program on the computer-readable storage medium, and when the computer program is executed by a computer, causes the computer to perform the steps performed by the network device in any method embodiment and /Or process.

The present application also provides a computer program product, the computer program product including computer program code, when the computer program code runs on a computer, causing the computer to perform any method embodiment of the steps performed by the network device and/or Process.

The present application also provides a chip including a processor. The memory for storing the computer program is provided independently of the chip, and the processor is used to execute the computer program stored in the memory to perform the steps and/or processes performed by the network device in any method embodiment. Optionally, the chip may further include the memory.

The present application also provides a wireless communication system, including the network device and the terminal device in the embodiments of the present application.

The processor in the embodiment of the present application may be an integrated circuit chip, and has a signal processing capability. In the implementation process, each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The processor can be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic Devices, discrete gates or transistor logic devices, discrete hardware components. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied and executed by a hardware encoding processor, or may be executed and completed by a combination of hardware and software modules in the encoding processor. The software module may be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, and a register. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

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

Those of ordinary skill in the art may realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware, depending on the specific technical solution Application and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present application.

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

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application.

The above is only the specific implementation of this application, but the scope of protection of this application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of receiving data, characterized in that it includes:

The terminal device receives first resource indication information, where the first resource indication information is used to indicate information that time-frequency resources occupied by each codeword in at least one codeword are preempted;

The terminal device processes each codeword in the at least one codeword according to the first resource indication information.
The method according to claim 1, wherein the first resource indication information is used to indicate that time-frequency resources occupied by each codeword in the at least one codeword are preempted, including:

The first resource indication information is used to indicate whether a time-frequency resource set occupied by each codeword in the at least one codeword is preempted; or,

The first resource indication information is used to indicate that at least a part of time-domain resources occupied by time-frequency resources occupied by each codeword in the at least one codeword is preempted.
The method according to claim 1 or 2, wherein the at least one codeword is scheduled by downlink control information DCI carried in a first set of control resources, and the first resource indication information is carried by the first control Resource collection; or,

The at least one codeword is scheduled by DCI carried in a first set of control resources, the first resource indication information is carried in a second set of control resources, and the first set of control resources is associated with the second set of control resources .
The method according to any one of claims 1 to 3, wherein the terminal device receiving the first resource indication information includes:

The terminal device receives a first DCI, the first DCI includes the first resource indication information, and the first resource indication information includes a plurality of first fields, wherein,

Each first field in the plurality of first fields corresponds to the at least one codeword; or,

Each first field in the plurality of first fields corresponds to configuration information of at least one second DCI, and the at least one second DCI is respectively used to enable at least a part of codewords in the at least one codeword; or,

Each first field in the plurality of first fields corresponds to at least one set of control resources of the second DCI, and the at least one second DCI is used to enable at least a part of the codewords in the at least one codeword, respectively.
The method according to claim 1 or 2, wherein the terminal device receiving the first resource indication information includes:

The terminal device receives a first DCI, the first DCI includes a first field, the first field is used to carry the first resource indication information, and the first field also carries codeword indication information, among them,

The codeword indication information is index information of a codeword associated with the at least one resource indication information;

Or, the codeword indication information is configuration information index value information of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword;

Alternatively, the codeword indication information is a control resource set index value of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword.
The method according to claim 1 or 2, wherein the terminal device receiving the first resource indication information includes:

The terminal device receives a plurality of first DCIs, and each of the plurality of first DCIs is used to carry a part of the first resource indication information; wherein,

Each first DCI in the plurality of first DCIs corresponds to at least one codeword in the at least one codeword;

Alternatively, the plurality of first DCIs respectively correspond to configuration information index value information of a plurality of fourth DCIs, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword;

Alternatively, the plurality of first DCIs respectively correspond to control resource set index values of a plurality of fourth DCIs, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword.
The method according to claim 6, wherein the plurality of first DCIs are scrambled by different RNTI sequences.
The method according to claim 6 or 7, wherein the at least one codeword is a plurality of codewords,

The multiple codewords are located on the same carrier or on the same partial bandwidth; and/or,

The plurality of fourth DCIs are located on the same carrier or on the same partial bandwidth; and/or,

The multiple first DCIs are located on the same carrier or on the same partial bandwidth.
The method according to any one of claims 6-8, wherein the at least one codeword is a plurality of codewords, the reception beams of the plurality of codewords are different, and/or the plurality of codes The quasi-co-located QCL of the word is different;

The multiple first DCIs have different receive beams, and/or the quasi-co-location QCL of the multiple first DCIs are different.
A method for sending data, which is characterized by comprising:

The network device sends at least one codeword to the terminal device;

The network device determines that at least a part of the time-frequency resources occupied by each codeword in the at least one codeword is preempted;

The network device sends first resource indication information to the terminal device, where the first resource indication information is used to indicate information that time-frequency resources occupied by each codeword in the at least one codeword are preempted.
The method according to claim 10, wherein the first resource indication information is used to indicate that time-frequency resources occupied by each codeword in the at least one codeword are preempted, including:

The first resource indication information is used to indicate whether time-frequency resources occupied by each codeword in the at least one codeword are preempted; or,

The first resource indication information is used to indicate that at least a part of time-domain resources occupied by time-frequency resources occupied by each codeword in the at least one codeword is preempted.
The method according to claim 11 or 12, wherein the at least one codeword is scheduled by downlink control information DCI carried in a first set of control resources, and the first resource indication information is carried by the first control Resource collection; or,

The at least one codeword is scheduled by DCI carried in a first set of control resources, the first resource indication information is carried in a second set of control resources, and the first set of control resources is associated with the second set of control resources .
The method according to any one of claims 10-12, wherein the network device sending the first resource indication information to the terminal device includes:

The network device sends a first DCI to the terminal device, where the first DCI includes the first resource indication information, and the first resource indication information includes multiple first fields, where,

Each first field in the plurality of first fields corresponds to the at least one codeword; or,

Each first field in the plurality of first fields corresponds to configuration information of at least one second DCI, and the at least one second DCI is respectively used to enable at least a part of codewords in the at least one codeword; or,

Each first field in the plurality of first fields corresponds to at least one set of control resources of the second DCI, and the at least one second DCI is used to enable at least a part of the codewords in the at least one codeword, respectively.
The method according to claim 10 or 11, wherein the network device sending the first resource indication information to the terminal device comprises:

The network device sends a first DCI to the terminal device, the first DCI includes a first field, the first field is used to carry the first resource indication information, and the first field also carries a codeword Instructions, where,

The codeword indication information is index information of a codeword associated with the at least one resource indication information;

Alternatively, the codeword indication information is configuration information index value information of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword;

Alternatively, the codeword indication information is a control resource set index value of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword.
The method according to claim 10 or 11, wherein the network device sending the first resource indication information to the terminal device comprises:

The network device sends a plurality of first DCIs to the terminal device, and each of the plurality of first DCIs is used to carry a part of the first resource indication information; wherein,

Each first DCI in the plurality of first DCIs corresponds to at least one codeword in the at least one codeword;

Or, the plurality of first DCIs respectively correspond to configuration information index value information of a plurality of fourth DCIs, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword;

Alternatively, the plurality of first DCIs respectively correspond to control resource set index values of a plurality of fourth DCIs, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword.
The method according to claim 15, wherein the plurality of first DCIs are scrambled by different RNTI sequences.
The method according to claim 15 or 16, wherein the at least one codeword is a plurality of codewords, and the plurality of codewords are located on the same carrier or on the same partial bandwidth; and/or,

The plurality of fourth DCIs are located on the same carrier or on the same partial bandwidth; and/or,

The multiple first DCIs are located on the same carrier or on the same partial bandwidth.
The method according to any one of claims 15-17, wherein the at least one codeword is a plurality of codewords, the transmission beams of the plurality of codewords are different, and/or the plurality of codes The quasi-co-location QCL of the word is different;

The plurality of first DCIs have different transmission beams, and/or the quasi-co-location QCL of the plurality of first DCIs are different.
An apparatus for receiving data, characterized in that it includes:

A transceiver unit, configured to receive first resource indication information, where the first resource indication information is used to indicate information that time-frequency resources occupied by each codeword in at least one codeword are preempted;

The processing unit is configured to process each codeword in the at least one codeword according to the first resource indication information.
The apparatus according to claim 19, wherein the first resource indication information is used to indicate that time-frequency resources occupied by each codeword in the at least one codeword are preempted, including:

The first resource indication information is used to indicate whether time-frequency resources occupied by each codeword in the at least one codeword are preempted; or,

The first resource indication information is used to indicate that at least a part of time-domain resources occupied by time-frequency resources occupied by each codeword in the at least one codeword is preempted.
The apparatus according to claim 19 or 20, wherein the at least one codeword is scheduled by downlink control information DCI carried in a first set of control resources, and the first resource indication information is carried by the first control Resource collection; or,

The at least one codeword is scheduled by DCI carried in a first set of control resources, the first resource indication information is carried in a second set of control resources, and the first set of control resources is associated with the second set of control resources .
The apparatus according to any one of claims 19-21, wherein the transceiver unit is specifically configured to receive a first DCI, the first DCI includes the first resource indication information, the The first resource indication information includes multiple first fields, where,

Each first field in the plurality of first fields corresponds to the at least one codeword; or,

Each first field in the plurality of first fields corresponds to configuration information of at least one second DCI, and the at least one second DCI is respectively used to enable at least a part of codewords in the at least one codeword; or,

Each first field in the plurality of first fields corresponds to at least one set of control resources of the second DCI, and the at least one second DCI is used to enable at least a part of the codewords in the at least one codeword, respectively.
The apparatus according to claim 19 or 20, wherein the transceiver unit is specifically configured to receive a first DCI, the first DCI includes a second field, and the second field is used to carry the First resource indication information, the second field also carries codeword indication information, where,

The codeword indication information is index information of the at least one codeword;

Alternatively, the codeword indication information is configuration information index information of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword;

Alternatively, the codeword indication information is control resource set index information of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword.
The apparatus according to claim 19 or 20, wherein the transceiver unit is specifically configured to receive a plurality of first DCIs, and each of the plurality of first DCIs is used to carry the first DCI Part of the information in the resource instructions; where,

Each first DCI in the plurality of first DCIs corresponds to at least one codeword in the at least one codeword;

Alternatively, the plurality of first DCIs respectively correspond to configuration information index information of a plurality of fourth DCIs, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword;

Alternatively, the plurality of first DCIs respectively correspond to control resource set index information of a plurality of fourth DCIs, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword.
An apparatus for sending data, characterized in that it includes:

The transceiver unit is used to send at least one codeword to the terminal device;

A processing unit, configured to determine that at least a part of time-frequency resources occupied by each codeword in the at least one codeword is preempted;

The transceiver unit is configured to send first resource indication information, and the first resource indication information is used to indicate information that time-frequency resources occupied by each codeword in the at least one codeword are preempted.
The apparatus according to claim 25, wherein the first resource indication information is used to indicate that time-frequency resources occupied by each codeword in the at least one codeword are preempted, including:

The first resource indication information is used to indicate whether time-frequency resources occupied by each codeword in the at least one codeword are preempted; or,

The first resource indication information is used to indicate that at least a part of time-domain resources occupied by time-frequency resources occupied by each codeword in the at least one codeword is preempted.
The apparatus according to claim 25 or 26, wherein the at least one codeword is scheduled by downlink control information DCI carried in a first set of control resources, and the first resource indication information is carried by the first control Resource collection; or,

The at least one codeword is scheduled by DCI carried in a first set of control resources, the first resource indication information is carried in a second set of control resources, and the first set of control resources is associated with the second set of control resources .
The apparatus according to any one of claims 25 to 27, wherein the transceiver unit is specifically configured to send a first DCI, and the first DCI includes the first resource indication information, the The first resource indication information includes multiple first fields, where,

Each first field in the plurality of first fields corresponds to the at least one codeword; or,

Each first field in the plurality of first fields corresponds to configuration information of at least one second DCI, and the at least one second DCI is respectively used to enable at least a part of codewords in the at least one codeword; or,

Each first field in the plurality of first fields corresponds to at least one set of control resources of the second DCI, and the at least one second DCI is used to enable at least a part of the codewords in the at least one codeword, respectively.
The apparatus according to claim 25 or 26, wherein the transceiver unit is specifically configured to send a first DCI, the first DCI includes a first field, and the first field is used to carry the First resource indication information, the first field also carries codeword indication information, where,

The codeword indication information is index information of a codeword associated with the at least one resource indication information;

Alternatively, the codeword indication information is configuration information index value information of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword;

Alternatively, the codeword indication information is a control resource set index value of a third DCI, and the third DCI is used to enable at least a part of codewords in the at least one codeword.
The apparatus according to claim 25 or 26, wherein the transceiver unit is specifically configured to send a plurality of first DCIs, and each of the plurality of first DCIs is used to carry the first DCI Part of the information in the resource instructions; where,

Each first DCI in the plurality of first DCIs corresponds to at least one codeword in the at least one codeword;

Or, the plurality of first DCIs respectively correspond to configuration information index value information of a plurality of fourth DCIs, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword;

Alternatively, the plurality of first DCIs respectively correspond to control resource set index values of a plurality of fourth DCIs, and the plurality of fourth DCIs are respectively used to enable at least a part of codewords in the at least one codeword.
A computer-readable storage medium, characterized in that the computer-readable storage medium includes computer program code, and when the computer program code is executed on a computer, causes the computer to execute any of claims 1-9 One of the methods.
A computer-readable storage medium, characterized in that the computer-readable storage medium includes computer program code, and when the computer program code is executed on a computer, causes the computer to execute any of claims 10-18 One of the methods.
A chip, characterized in that it includes an interface circuit and a processor, the interface circuit is used to receive a computer program and transmit it to the processor, the processor is used to read and run the computer program to execute the right The method according to any one of claims 1-9.
A chip, characterized by comprising an interface circuit and a processor, the interface circuit is used to receive a computer program and transmit it to the processor, the processor is used to read and run the computer program to execute the right The method according to any one of claims 10-18.
A chip, characterized in that it includes a processor for reading and executing a computer program stored in a memory to perform the method according to any one of claims 1-9 or execute the method according to claim 10 The method according to any of -18.