CN111801906A - Wireless communication method and terminal device - Google Patents

Wireless communication method and terminal device Download PDF

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Publication number
CN111801906A
CN111801906A CN201880090688.3A CN201880090688A CN111801906A CN 111801906 A CN111801906 A CN 111801906A CN 201880090688 A CN201880090688 A CN 201880090688A CN 111801906 A CN111801906 A CN 111801906A
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transmission
block
dmrs port
transport
transport block
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CN111801906B (en
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陈文洪
史志华
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Abstract

The embodiment of the application provides a wireless communication method and terminal equipment, which can support layer mapping under two conditions of single TRP/panel transmission and multiple TRP/panel transmission. The method comprises the following steps: the terminal equipment determines first information according to the transmission block information of at least one transmission block and at least one DMRS port group, wherein the first information comprises a mapping mode of a code word corresponding to the at least one transmission block to a transmission layer and/or a DMRS port adopted by each transmission layer; and the terminal equipment performs mapping of the code word corresponding to the at least one transport block to the transport layers based on the first information and transmits the mapped data, and/or the terminal equipment performs DMRS transmission on the DMRS ports adopted by each transport layer based on the first information.

Description

Wireless communication method and terminal device Technical Field
The present embodiments relate to the field of communications, and in particular, to a wireless communication method and a terminal device.
Background
In a New Radio (NR) system, multiple Transmission points (TRPs) or multiple antenna array blocks (panels) may transmit downlink signals to a terminal device at the same time, and different signals (beams) may be used for different TRP/Panel transmissions. The network device may schedule Downlink transmission of multiple TRPs/panels through the same Downlink Control Information (DCI), where data of different TRPs/panels may be transmitted through different DMRS port groups, and each Demodulation Reference Signal (DMRS) port group may have its own QCL hypothesis. At present, terminal equipment can only support layer mapping and DMRS port mapping under the condition of single TRP/panel, and cannot meet the requirement of simultaneous transmission of multiple TRP/panels, so that the downlink transmission performance is poor.
Disclosure of Invention
The embodiment of the application provides a wireless communication method and terminal equipment, wherein the terminal equipment can determine a mapping mode from a currently adopted code word to a transmission layer according to the configuration of a transmission block and a DMRS port group, and simultaneously determine the DMRS ports adopted by each transmission layer, so that layer mapping under two conditions of single TRP/panel transmission and multiple TRP/panel transmission can be supported without extra signaling overhead.
In a first aspect, a wireless communication method is provided, and the method includes:
the terminal equipment determines first information according to the transmission block information of at least one transmission block and at least one DMRS port group, wherein the first information comprises a mapping mode of a code word corresponding to the at least one transmission block to a transmission layer and/or a DMRS port adopted by each transmission layer;
and the terminal equipment performs mapping of the code word corresponding to the at least one transport block to the transport layers based on the first information and transmits the mapped data, and/or the terminal equipment performs DMRS transmission on the DMRS ports adopted by each transport layer based on the first information.
Specifically, the terminal device performs mapping of a codeword corresponding to the at least one transport block to a transport layer based on the mapping manner, and transmits the mapped data, and/or the terminal device performs DMRS transmission on DMRS ports used by each transport layer based on DMRS ports used by each transport layer.
Optionally, the transport block information of the at least one transport block and the at least one DMRS port group may be network device configured.
Optionally, the at least one transport block belongs to one PDSCH, and the at least one transport block may be from a single TRP/panel or from multiple TRP/panels.
In a second aspect, a terminal device is provided for executing the method in the first aspect.
In particular, the terminal device comprises functional modules for performing the method in the first aspect described above.
In a third aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the first aspect.
In a fourth aspect, a chip is provided for implementing the method in the first aspect.
Specifically, the chip includes: a processor for calling and running the computer program from the memory so that the device in which the chip is installed performs the method as in the first aspect described above.
In a fifth aspect, a computer-readable storage medium is provided for storing a computer program for causing a computer to perform the method of the first aspect.
In a sixth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of the first aspect.
In a seventh aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of the first aspect.
By the technical scheme, the terminal device can determine a mapping manner from a codeword corresponding to at least one transport block to a transport layer and/or a DMRS port used by each transport layer according to transport block information of at least one transport block and at least one DMRS port group, so that the terminal device can perform mapping from a codeword corresponding to at least one transport block to a transport layer based on the determined mapping manner and transmit data after mapping, and/or perform DMRS transmission for each transport layer on the DMRS port used by each transport layer. Further, layer mapping in both single and multiple TRP/panel transmissions can be supported without requiring additional signaling overhead.
Drawings
Fig. 1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application.
Fig. 2 is a schematic flow chart of a wireless communication method provided according to an embodiment of the present application.
Fig. 3 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
Fig. 4 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
Fig. 5 is a schematic block diagram of a chip provided according to an embodiment of the present application.
Fig. 6 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
Detailed Description
Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application can be applied to various communication systems, such as: global System for Mobile communications (GSM) System, Code Division Multiple Access (CDMA) System, Wideband Code Division Multiple Access (WCDMA) System, General Packet Radio Service (GPRS), Long Term Evolution (Long Term Evolution, LTE) System, LTE-a System, New Radio (NR) System, Evolution System of NR System, LTE-a System over unlicensed spectrum, NR (NR-b) System, UMTS (Universal Mobile telecommunications System), UMTS (UMTS) System, WLAN-b System over unlicensed spectrum, WiFi-b System, Wireless Local Area Network (WLAN) System, Wireless Local Area network (WiFi) System, GPRS (General Packet Radio Service, GPRS) System, GPRS (GPRS) System, LTE-b System, LTE-a System, NR System, LTE-b System over unlicensed spectrum, and LTE-b System over unlicensed spectrum, Next generation communication systems or other communication systems, etc.
Generally, conventional Communication systems support a limited number of connections and are easy to implement, however, with the development of Communication technology, mobile Communication systems will support not only conventional Communication, but also, for example, Device-to-Device (D2D) Communication, Machine-to-Machine (M2M) Communication, Machine Type Communication (MTC), and Vehicle-to-Vehicle (V2V) Communication, and the embodiments of the present application can also be applied to these Communication systems.
Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.
The frequency spectrum of the application is not limited in the embodiment of the present application. For example, the embodiments of the present application may be applied to a licensed spectrum and may also be applied to an unlicensed spectrum.
Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area.
Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.
Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.
It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.
The embodiments of the present application are described in conjunction with a terminal device and a network device, where: a terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment, etc. The terminal device may be a Station (ST) in a WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, and a next generation communication system, for example, a terminal device in an NR Network or a terminal device in a future evolved Public Land Mobile Network (PLMN) Network, and the like.
By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.
The network device may be a device for communicating with a mobile device, and the network device may be an Access Point (AP) in a WLAN, a Base Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in WCDMA, an evolved Node B (eNB, eNodeB) in LTE, a relay Station or an Access Point, or a vehicle-mounted device, a wearable device, a network device (gNB) in an NR network, or a network device in a PLMN network that is evolved in the future.
In this embodiment of the present application, a network device provides a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), Micro cells (Micro cells), Pico cells (Pico cells), Femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.
Fig. 2 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application, and as shown in fig. 2, the method 200 may include the following:
s210, the terminal equipment determines first information according to the transmission block information of at least one transmission block and at least one DMRS port group, wherein the first information comprises a mapping mode of a code word corresponding to the at least one transmission block to a transmission layer and/or a DMRS port adopted by each transmission layer;
s220, the terminal device performs mapping of the codeword corresponding to the at least one transport block to a transport layer based on the first information, and transmits the mapped data, and/or the terminal device performs DMRS transmission on DMRS ports adopted by each transport layer based on the first information.
Specifically, the terminal device performs mapping of a codeword corresponding to the at least one transport block to a transport layer based on the mapping manner, and transmits data after mapping, and/or the terminal device performs DMRS transmission on DMRS ports adopted by each transport layer based on DMRS ports adopted by each transport layer.
In specific implementation, the terminal device may determine, according to the transport block information of the at least one transport block and the at least one DMRS port group, a mapping manner of a codeword corresponding to the at least one transport block to a transport layer, perform mapping of the codeword corresponding to the at least one transport block to the transport layer based on the mapping manner, and transmit the mapped data.
In addition, the terminal device may further determine the DMRS port used by each transmission layer according to the transmission block information of the at least one transmission block and the at least one DMRS port group, and then perform DMRS transmission on the DMRS port used by each transmission layer.
It should be noted that the at least one transport block may belong to one PDSCH, and the at least one transport block may be from a single TRP/panel or from multiple TRPs/panels.
Optionally, the transport block information of the at least one transport block and the at least one DMRS port group included in the first information may be preconfigured to the terminal device.
Optionally, the transport block information of the at least one transport block and the at least one DMRS port group included in the first information may be configured by a network device. For example, the terminal device receives transport block Information of the at least one transport block and the at least one DMRS port group, which are indicated by Downlink Control Information (DCI) by the network device.
Optionally, as an example of the present application, the network device may first indicate, through Radio Resource Control (RRC) signaling, all DMRS ports included in each DMRS port group in the at least one DMRS port group (i.e., DMRS grouping method), and then indicate, through DCI signaling, a DMRS port used for current data transmission in the at least one DMRS port group, so as to determine the DMRS port in the DMRS port group used for current data transmission. For example, the network device indicates, through RRC signaling, that the DMRS port group 1 includes DMRS ports {0,1,4,5}, and the DMRS port group 2 includes DMRS ports {2,3,6,7}, and then indicates, through DCI, that the DMRS port used for current data transmission is {0,1,2,3}, so that the terminal device can determine that 2 DMRS port groups are used for current data transmission, that is, the DMRS ports {0,1} in the DMRS port group 1 and the DMRS ports {2,3} in the DMRS port group 2.
Optionally, as example two of the present application, the network device may also directly indicate, through the DCI, a DMRS port included in each of at least one DMRS port group used for current transmission. For example, the network device indicates, through the DCI, that the current transmission employs DMRS port {0,1} in DMRS port group 1 and DMRS port {2,3} in DMRS port group 2, where DMRS port group 1 includes DMRS ports {0,1,4,5} and DMRS port group 2 includes DMRS ports {2,3,6,7 }.
Optionally, in this embodiment of the present application, the transport block information includes the number of the at least one transport block or an index of a transport block used for current data transmission in the at least one transport block.
Specifically, the network device may notify the terminal device whether a transport block is prohibited from being transmitted (disabled) through a Redundancy Version (RV) and a Modulation and Coding Scheme (MCS) indication of the transport block in the DCI.
For example, if both transport blocks can be used for data transmission (enabled), the number of transport blocks is 2, and the transport blocks used for current transmission are transport block 1 and transport block 2.
For another example, if only one transport block can be used for data transmission, the number of transport blocks is 1, and the allowed transport block may be transport block 1 or transport block 2.
Optionally, in this embodiment of the present application, different DMRS port groups of the at least one DMRS port group are associated with different Transmission Configuration Indicator (TCI) states or have different Quasi-co-located (QCL) hypotheses.
It should be noted that the TCI status may be used to indicate QCL information, which may be classified into 4 types (types), for example, Type a-Type D, where Type D is used to cooperate with the terminal device for beam reception.
Optionally, in this embodiment of the application, if the number of the at least one transport block is 2, a codeword corresponding to a first transport block in the at least one transport block is codeword 0, and a codeword corresponding to a second transport block in the at least one transport block is codeword 1.
Optionally, in this embodiment of the present application, if the number of the at least one transport block is 1, a codeword corresponding to the at least one transport block is codeword 0.
Optionally, in this embodiment of the application, if the transport block information includes the number of the at least one transport block, the terminal device may determine, according to the number of the at least one transport block and the at least one DMRS port group, a mapping manner of a codeword corresponding to the at least one transport block to a transport layer.
Optionally, as an example three of the present application, the determining, by the terminal device, a mapping manner of a codeword corresponding to the at least one transport block to a transport layer according to the number of the at least one transport block and the at least one DMRS port group may include at least one of the following:
if the number of the at least one transmission block is 1, the terminal device determines to map the codeword corresponding to the at least one transmission block to all transmission layers;
if the number of the at least one transmission block is 2 and the number of the at least one DMRS port group is 1, the terminal device determines to map a codeword corresponding to a first transmission block of the at least one transmission block to a previous codeword
Figure PCTCN2018109723-APPB-000001
A transport layer for mapping codewords corresponding to a second transport block of the at least one transport block to remaining transport layers, wherein,
Figure PCTCN2018109723-APPB-000002
represents rounding down, P being the number of transport layers used for the current data transmission;
if the number of the at least one transmission block is 2 and the number of the at least one DMRS port group is N, the terminal device determines to map a codeword corresponding to a first transmission block in the at least one transmission block to the first M transmission layers and map a codeword corresponding to a second transmission block in the at least one transmission block to the remaining transmission layers, wherein M is the number of DMRS ports in a predefined one DMRS port group in the at least one DMRS port group, and N is an integer greater than 1;
and if the number of the at least one transmission block and the number of the at least one DMRS port group are both K, the terminal equipment determines to map the code word corresponding to the kth transmission block in the at least one transmission block to Mk transmission layers, wherein Mk is the number of the DMRS ports in the kth DMRS port group in the at least one DMRS port group, K is an integer greater than 1, and K is a positive integer less than or equal to K.
It should be noted that, in the third example, the information of the transmission layer may be obtained by the terminal device through Rank Indication (RI) in DCI or Sounding Reference Signal (SRS) Resource Indication (SRI).
Optionally, in this example three, the predefined one DMRS port group may be a first DMRS port group, a second DMRS port group, and so on, in the at least one DMRS port group.
Typically, in this example three, the number of the at least one transport block is 2, and the number of the at least one DMRS port group is 2, where codewords corresponding to a first transport block in the at least one transport block are mapped to the first M transport layers, codewords corresponding to a second transport block are mapped to the remaining transport layers, and M is the number of DMRS ports in the first DMRS port group in the 2 DMRS port groups.
Optionally, in this example three, the codeword corresponding to the first transport block in the at least one transport block is mapped to the first to M1 th transport layers, the codeword corresponding to the second transport block is mapped to the M1+1 to M1+ M2 th transport layers, the codeword corresponding to the third transport block is mapped to the M1+ M2+1 to M1+ M2+ M3 th transport layers, and so on. Wherein Mk is the number of DMRS ports in the kth DMRS port group in the at least one DMRS port group.
Optionally, in this embodiment of the application, if the transport block information includes an index of a transport block used for current data transmission in the at least one transport block, the terminal device determines, according to the index of the transport block used for current data transmission in the at least one transport block and the at least one DMRS port group, a mapping manner of a codeword corresponding to the at least one transport block to a transport layer.
Optionally, as a fourth example of the present application, if an index of a transport block used for current data transmission is k, the terminal device determines to map a codeword corresponding to the transport block used for current data transmission in the at least one transport block to Mk transport layers, where Mk is the number of DMRS ports included in a kth DMRS port group in the at least one DMRS port group.
For example, in the fourth example, assuming that the number of the at least one transport block is 1, the at least one DMRS port group includes two DMRS port groups {0} and {2,3,6}, when the current data transmission adopts transport block 1 (i.e., when transport block 2 is turned off), the codeword corresponding to the transport block is mapped to 1 transport layer; when the current data transmission adopts the transport block 2 (i.e. when the transport block 1 is closed), the codeword corresponding to the transport block is mapped to 3 transport layers.
Preferably, the fourth example is generally used for the case where the number of transport blocks is 1.
Optionally, in this embodiment of the application, if the transport block information includes the number of the at least one transport block, the terminal device determines, according to the number of the at least one transport block and the at least one DMRS port group, a DMRS port used by each transport layer.
Optionally, as an example five of the present application, the determining, by the terminal device, the DMRS port used by each transmission layer according to the number of the at least one transmission block and the at least one DMRS port group includes at least one of:
if the number of the at least one transmission block is 1, the terminal device determines that all DMRS ports in the at least one DMRS port group are adopted by a transmission layer mapped by the code word corresponding to the at least one transmission block;
if the number of the at least one transmission block is 2 and the number of the at least one DMRS port group is 1, the terminal device determines that the transmission layer mapped by the codeword corresponding to the first transmission block in the at least one transmission block adopts the first transmission layer in the at least one DMRS port group
Figure PCTCN2018109723-APPB-000003
A number of DMRS ports, wherein,
Figure PCTCN2018109723-APPB-000004
indicating a rounding-down, P being the number of transport layers used for current data transmission or the number of ports in the at least one DMRS port group;
if the number of the at least one transmission block and the number of the at least one DMRS port group are K, the terminal device determines that a transmission layer mapped by a codeword corresponding to a kth transmission block in the at least one transmission block adopts a DMRS port in the kth DMRS port group in the at least one DMRS port group, wherein K is an integer greater than or equal to 2, and K is a positive integer less than or equal to K.
For example, in this example five, assuming that the number of the at least one transport block is 2, the at least one DMRS port group includes two DMRS port groups {0} and {2,3,6}, then the codeword-mapped transport layer corresponding to the first transport block employs the DMRS port {0}, and the codeword-mapped transport layer corresponding to the second transport block employs the DMRS ports {2,3,6 }.
Optionally, in this embodiment of the application, if the transmission block information includes an index of a transmission block used for current data transmission in the at least one transmission block, the terminal device determines, according to the index of the transmission block used for current data transmission in the at least one transmission block and the at least one DMRS port group, a DMRS port used by each transmission layer.
Optionally, as a sixth example of the present application, if an index of a transport block used for current data transmission is k, the terminal device determines that a transport layer mapped by a codeword corresponding to the transport block used for current data transmission in the at least one transport block adopts a DMRS port in a kth DMRS port group in the at least one DMRS port group, where k is an integer greater than or equal to 1.
For example, in this example six, assuming that the number of the at least one transport block is 1, the at least one DMRS port group includes two DMRS port groups {0} and {2,3,6}, when the current data transmission employs transport block 1 (i.e., when transport block 2 is turned off), the transport layer to which the codeword corresponding to the transport block is mapped employs DMRS port {0 }; when the current transmission adopts the transmission block 2 (namely, when the transmission block 1 is closed), the DMRS port {2,3,6} is adopted by the transmission layer mapped by the codeword corresponding to the transmission block.
Preferably, six is generally used in this example for the case where the number of transport blocks is 1.
Therefore, in the embodiment of the present application, the terminal device may determine, according to the configuration of the transmission block and the DMRS port group, the mapping manner of the currently used codeword to the transmission layer, and determine the DMRS port used by each transmission layer at the same time, so that layer mapping under two conditions, i.e., single TRP/panel transmission and multiple TRP/panel transmission, may be supported without additional signaling overhead.
Fig. 3 shows a schematic block diagram of a terminal device 300 according to an embodiment of the application. As shown in fig. 3, the terminal device 300 includes:
a processing unit 310, configured to determine first information according to transport block information of at least one transport block and at least one DMRS port group, where the first information includes a mapping manner of a codeword corresponding to the at least one transport block to a transport layer and/or a DMRS port used by each transport layer;
a communication unit 320, configured to perform mapping of a codeword corresponding to the at least one transport block to a transport layer based on the first information, and transmit data after mapping, and/or perform DMRS transmission on DMRS ports used by each transport layer based on the first information.
Optionally, the transport block information includes a number of the at least one transport block or an index of a transport block for current data transmission in the at least one transport block.
Optionally, if the transport block information includes the number of the at least one transport block,
the processing unit 310 is specifically configured to:
and determining a mapping mode of a codeword corresponding to the at least one transport block to a transmission layer according to the number of the at least one transport block and the at least one DMRS port group.
Optionally, the processing unit 310 determines, according to the number of the at least one transport block and the at least one DMRS port group, a mapping manner of a codeword corresponding to the at least one transport block to a transport layer, where the mapping manner includes at least one of:
if the number of the at least one transport block is 1, the processing unit 310 determines to map the codeword corresponding to the at least one transport block to all transport layers;
if the number of the at least one transport block is 2 and the number of the at least one DMRS port group is 1, the processing unit 310 determines to map a codeword corresponding to a first transport block of the at least one transport block to a previous codeword
Figure PCTCN2018109723-APPB-000005
A transport layer for mapping codewords corresponding to a second transport block of the at least one transport block to remaining transport layers, wherein,
Figure PCTCN2018109723-APPB-000006
denotes rounding down, P is forThe number of transport layers of the previous data transmission;
if the number of the at least one transport block is 2 and the number of the at least one DMRS port group is N, the processing unit 310 determines to map a codeword corresponding to a first transport block in the at least one transport block to the first M transport layers and map a codeword corresponding to a second transport block in the at least one transport block to the remaining transport layers, where M is the number of DMRS ports in a predefined one of the at least one DMRS port group, and N is an integer greater than 1;
if the number of the at least one transport block and the number of the at least one DMRS port group are both K, the processing unit 310 determines to map codewords corresponding to a kth transport block in the at least one transport block to Mk transport layers, where Mk is the number of DMRS ports in the kth DMRS port group in the at least one DMRS port group, K is an integer greater than 1, and K is a positive integer less than or equal to K.
Optionally, if the transport block information includes an index of a transport block used for current data transmission in the at least one transport block,
the processing unit 310 is specifically configured to:
and determining a mapping mode of a code word corresponding to the at least one transmission block to a transmission layer according to the index of the transmission block used for current data transmission in the at least one transmission block and the at least one DMRS port group.
Optionally, the determining, by the processing unit 310, a mapping manner of a codeword corresponding to the at least one transport block to a transport layer according to the index of the transport block used for current data transmission in the at least one transport block and the at least one DMRS port group includes:
if the index of the transport block used for the current data transmission is k, the processing unit 310 determines to map the codeword corresponding to the transport block used for the current data transmission in the at least one transport block to Mk transport layers, where Mk is the number of DMRS ports included in the kth DMRS port group in the at least one DMRS port group.
Optionally, if the transport block information includes the number of the at least one transport block,
the processing unit 310 is specifically configured to:
and determining the DMRS port adopted by each transmission layer according to the number of the at least one transmission block and the at least one DMRS port group.
Optionally, the processing unit 310 determines, according to the number of the at least one transport block and the at least one DMRS port group, a DMRS port adopted by each transport layer, where the DMRS port adopted by each transport layer includes at least one of:
if the number of the at least one transport block is 1, the processing unit 310 determines that all DMRS ports in the at least one DMRS port group are used by a transport layer mapped by a codeword corresponding to the at least one transport block;
if the number of the at least one transport block is 2 and the number of the at least one DMRS port group is 1, the processing unit 310 determines that the transport layer mapped by the codeword corresponding to the first transport block in the at least one transport block adopts the first transport block in the at least one DMRS port group
Figure PCTCN2018109723-APPB-000007
A number of DMRS ports, wherein,
Figure PCTCN2018109723-APPB-000008
indicating a rounding-down, P being the number of transport layers used for current data transmission or the number of ports in the at least one DMRS port group;
if the number of the at least one transport block and the number of the at least one DMRS port group are K, the processing unit 310 determines that the transport layer mapped by the codeword corresponding to the kth transport block in the at least one transport block adopts a DMRS port in the kth DMRS port group in the at least one DMRS port group, where K is an integer greater than or equal to 2, and K is a positive integer less than or equal to K.
Optionally, if the transport block information includes an index of a transport block used for current data transmission in the at least one transport block,
the processing unit 310 is specifically configured to:
and determining the DMRS port adopted by each transmission layer according to the index of the transmission block used for current data transmission in the at least one transmission block and the at least one DMRS port group.
Optionally, the determining, by the processing unit 310, the DMRS port adopted by each transmission layer according to the index of the transmission block used for current data transmission in the at least one transmission block and the at least one DMRS port group includes:
if the index of the transport block used for the current data transmission is k, the processing unit 310 determines that the DMRS port in the kth DMRS port group in the at least one DMRS port group is used by the transport layer mapped by the codeword corresponding to the transport block used for the current data transmission in the at least one transport block, where k is an integer greater than or equal to 1.
Optionally, if the number of the at least one transport block is 2, a codeword corresponding to a first transport block in the at least one transport block is codeword 0, and a codeword corresponding to a second transport block in the at least one transport block is codeword 1.
Optionally, the communication unit 320 is further configured to receive transport block information of the at least one transport block and the at least one DMRS port group, which are indicated by the DCI by the network device.
Optionally, different ones of the at least one DMRS port group are associated with different TCI states or have different QCL hypotheses.
It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 300 are respectively for implementing the corresponding flow of the terminal device in the method 200 shown in fig. 2, and are not described herein again for brevity.
Fig. 4 is a schematic structural diagram of a communication device 400 according to an embodiment of the present application. The communication device 400 shown in fig. 4 comprises a processor 410, and the processor 410 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
Optionally, as shown in fig. 4, the communication device 400 may also include a memory 420. From the memory 420, the processor 410 can call and run a computer program to implement the method in the embodiment of the present application.
The memory 420 may be a separate device from the processor 410, or may be integrated into the processor 410.
Optionally, as shown in fig. 4, the communication device 400 may further include a transceiver 430, and the processor 410 may control the transceiver 430 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.
The transceiver 430 may include a transmitter and a receiver, among others. The transceiver 430 may further include antennas, and the number of antennas may be one or more.
Optionally, the communication device 400 may specifically be a network device in the embodiment of the present application, and the communication device 400 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.
Optionally, the communication device 400 may specifically be a mobile terminal/terminal device in the embodiment of the present application, and the communication device 400 may implement a corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.
Fig. 5 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 500 shown in fig. 5 includes a processor 510, and the processor 510 may call and run a computer program from a memory to implement the method in the embodiment of the present application.
Optionally, as shown in fig. 5, the chip 500 may further include a memory 520. From the memory 520, the processor 510 can call and run a computer program to implement the method in the embodiment of the present application.
The memory 520 may be a separate device from the processor 510, or may be integrated into the processor 510.
Optionally, the chip 500 may further comprise an input interface 530. The processor 510 may control the input interface 530 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.
Optionally, the chip 500 may further include an output interface 540. The processor 510 may control the output interface 540 to communicate with other devices or chips, and may particularly output information or data to the other devices or chips.
Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.
Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.
Fig. 6 is a schematic block diagram of a communication system 600 provided in an embodiment of the present application. As shown in fig. 6, the communication system 600 includes a terminal device 610 and a network device 620.
The terminal device 610 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 620 may be configured to implement the corresponding function implemented by the network device in the foregoing method, for brevity, which is not described herein again.
It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A 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 connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.
It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.
The embodiment of the application also provides a computer readable storage medium for storing the computer program.
Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.
Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.
Embodiments of the present application also provide a computer program product comprising computer program instructions.
Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.
Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.
The embodiment of the application also provides a computer program.
Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.
Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (31)

  1. A method of wireless communication, comprising:
    the terminal equipment determines first information according to transmission block information of at least one transmission block and at least one demodulation reference signal (DMRS) port group, wherein the first information comprises a mapping mode of a code word corresponding to the at least one transmission block to a transmission layer and/or a DMRS port adopted by each transmission layer;
    and the terminal equipment maps the code word corresponding to the at least one transmission block to the transmission layer based on the first information and transmits the mapped data, and/or the terminal equipment respectively performs DMRS transmission on the DMRS port adopted by each transmission layer based on the first information.
  2. The method of claim 1, wherein the transport block information comprises a number of the at least one transport block or an index of a transport block of the at least one transport block for a current data transmission.
  3. The method of claim 2, wherein if the transport block information includes the number of the at least one transport block,
    the terminal equipment determines the first information according to the transmission block information of at least one transmission block and at least one DMRS port group, and the method comprises the following steps:
    and the terminal equipment determines a mapping mode of a code word corresponding to the at least one transmission block to a transmission layer according to the number of the at least one transmission block and the at least one DMRS port group.
  4. The method of claim 3, wherein the terminal device determines, according to the number of the at least one transport block and the at least one DMRS port group, a mapping manner of a codeword corresponding to the at least one transport block to a transport layer, and includes at least one of:
    if the number of the at least one transmission block is 1, the terminal device determines to map the codeword corresponding to the at least one transmission block to all transmission layers;
    if the number of the at least one transmission block is 2 and the number of the at least one DMRS port group is 1, the terminal device determines to map a codeword corresponding to a first transmission block of the at least one transmission block to a previous codeword
    Figure PCTCN2018109723-APPB-100001
    A transport layer for mapping codewords corresponding to a second transport block of the at least one transport block to remaining transport layers,
    Figure PCTCN2018109723-APPB-100002
    represents rounding down, P being the number of transport layers used for the current data transmission;
    if the number of the at least one transmission block is 2 and the number of the at least one DMRS port group is N, the terminal equipment determines to map a codeword corresponding to a first transmission block in the at least one transmission block to the first M transmission layers and map a codeword corresponding to a second transmission block in the at least one transmission block to the rest transmission layers, wherein M is the number of DMRS ports in a predefined one DMRS port group in the at least one DMRS port group, and N is an integer greater than 1;
    if the number of the at least one transmission block and the number of the at least one DMRS port group are both K, the terminal device determines to map a codeword corresponding to a kth transmission block in the at least one transmission block to MkA transport layer, wherein MkThe number of DMRS ports in a kth DMRS port group in the at least one DMRS port group is K, which is an integer greater than 1, and K is a positive integer less than or equal to K.
  5. The method of claim 2, wherein if the transport block information comprises an index of a transport block of the at least one transport block used for current data transmission,
    the terminal equipment determines the first information according to the transmission block information of at least one transmission block and at least one DMRS port group, and the method comprises the following steps:
    and the terminal equipment determines a mapping mode of a code word corresponding to the at least one transmission block to a transmission layer according to the index of the transmission block used for current data transmission in the at least one transmission block and the at least one DMRS port group.
  6. The method of claim 5, wherein the determining, by the terminal device, a mapping manner of a codeword corresponding to the at least one transport block to a transport layer according to an index of the transport block used for current data transmission in the at least one transport block and the at least one DMRS port group comprises:
    if the index of the transport block for current data transmission is k, the terminal device determines to map the codeword corresponding to the transport block for current data transmission in the at least one transport block to MkA transport layer, wherein MkA number of DMRS ports included for a kth of the at least one DMRS port group.
  7. The method of claim 2, wherein if the transport block information includes the number of the at least one transport block,
    the terminal equipment determines the first information according to the transmission block information of at least one transmission block and at least one DMRS port group, and the method comprises the following steps:
    and the terminal equipment determines the DMRS port adopted by each transmission layer according to the number of the at least one transmission block and the at least one DMRS port group.
  8. The method of claim 7, wherein the terminal device determines, from the number of the at least one transport block and the at least one DMRS port group, a DMRS port to be used by each transport layer, comprising at least one of:
    if the number of the at least one transmission block is 1, the terminal equipment determines that all DMRS ports in the at least one DMRS port group are adopted by a transmission layer mapped by a code word corresponding to the at least one transmission block;
    if the number of the at least one transmission block is 2 and the number of the at least one DMRS port group is 1, the terminal device determines that a transmission layer mapped by a codeword corresponding to a first transmission block in the at least one transmission block adopts a former transmission layer in the at least one DMRS port group
    Figure PCTCN2018109723-APPB-100003
    A number of DMRS ports, wherein,
    Figure PCTCN2018109723-APPB-100004
    represents rounding down, P being the number of transport layers used for current data transmission or the number of ports in the at least one DMRS port group;
    if the number of the at least one transmission block and the number of the at least one DMRS port group are K, the terminal device determines that a transmission layer mapped by a codeword corresponding to a kth transmission block in the at least one transmission block adopts a DMRS port in the kth DMRS port group in the at least one DMRS port group, wherein K is an integer greater than or equal to 2, and K is a positive integer less than or equal to K.
  9. The method of claim 2, wherein if the transport block information comprises an index of a transport block of the at least one transport block used for current data transmission,
    the terminal equipment determines the first information according to the transmission block information of at least one transmission block and at least one DMRS port group, and the method comprises the following steps:
    and the terminal equipment determines the DMRS port adopted by each transmission layer according to the index of the transmission block used for current data transmission in the at least one transmission block and the at least one DMRS port group.
  10. The method of claim 9, wherein the determining, by the terminal device, the DMRS port to be used by each transport layer according to the index of the transport block of the at least one transport block used for the current data transmission and the at least one DMRS port group comprises:
    if the index of the transmission block used for current data transmission is k, the terminal device determines that the DMRS port in the kth DMRS port group in the at least one DMRS port group is adopted by the transmission layer mapped by the codeword corresponding to the transmission block used for current data transmission in the at least one transmission block, where k is an integer greater than or equal to 1.
  11. The method according to any one of claims 1 to 10, wherein if the number of the at least one transport block is 2, a codeword corresponding to a first transport block in the at least one transport block is codeword 0, and a codeword corresponding to a second transport block in the at least one transport block is codeword 1.
  12. The method according to any one of claims 1 to 11, further comprising:
    and the terminal equipment receives the first information indicated by the network equipment through downlink control information DCI.
  13. The method of any of claims 1 to 12, wherein different ones of the at least one DMRS port groups are associated with different transmission configuration indications TCI status or have different quasi co-located QCL hypotheses.
  14. A terminal device, comprising:
    the processing unit is used for determining first information according to transmission block information of at least one transmission block and at least one demodulation reference signal (DMRS) port group, wherein the first information comprises a mapping mode of a code word corresponding to the at least one transmission block to a transmission layer and/or a DMRS port adopted by each transmission layer;
    and a communication unit, configured to perform mapping of a codeword corresponding to the at least one transport block to a transport layer based on the first information, and transmit data after mapping, and/or perform DMRS transmission on DMRS ports used by each transport layer based on the first information.
  15. The terminal device of claim 14, wherein the transport block information comprises a number of the at least one transport block or an index of a transport block of the at least one transport block used for current data transmission.
  16. The terminal device of claim 15, wherein if the transport block information includes the number of the at least one transport block,
    the processing unit is specifically configured to:
    and determining a mapping mode of a code word corresponding to the at least one transmission block to a transmission layer according to the number of the at least one transmission block and the at least one DMRS port group.
  17. The terminal device of claim 16, wherein the processing unit determines, according to the number of the at least one transport block and the at least one DMRS port group, a mapping of a codeword corresponding to the at least one transport block to a transport layer, and comprises at least one of:
    if the number of the at least one transport block is 1, the processing unit determines to map the codeword corresponding to the at least one transport block to all transport layers;
    if the number of the at least one transport block is 2 and the number of the at least one DMRS port group is 1, the processing unit determines to map a codeword corresponding to a first transport block of the at least one transport block to a previous codeword
    Figure PCTCN2018109723-APPB-100005
    A transport layer for mapping codewords corresponding to a second transport block of the at least one transport block to remaining transport layers,
    Figure PCTCN2018109723-APPB-100006
    represents rounding down, P being the number of transport layers used for the current data transmission;
    if the number of the at least one transmission block is 2 and the number of the at least one DMRS port group is N, the processing unit determines to map a codeword corresponding to a first transmission block in the at least one transmission block to the first M transmission layers and map a codeword corresponding to a second transmission block in the at least one transmission block to the rest transmission layers, wherein M is the number of DMRS ports in a predefined one DMRS port group in the at least one DMRS port group, and N is an integer greater than 1;
    if the number of the at least one transmission block and the number of the at least one DMRS port group are both K, the processing unit determines to map a codeword corresponding to a kth transmission block in the at least one transmission block to MkA transport layer, wherein MkThe number of DMRS ports in a kth DMRS port group in the at least one DMRS port group is K, which is an integer greater than 1, and K is a positive integer less than or equal to K.
  18. The terminal device of claim 15, wherein if the transport block information includes an index of a transport block of the at least one transport block used for current data transmission,
    the processing unit is specifically configured to:
    and determining a mapping mode of a code word corresponding to the at least one transmission block to a transmission layer according to the index of the transmission block used for current data transmission in the at least one transmission block and the at least one DMRS port group.
  19. The terminal device of claim 18, wherein the processing unit determines a mapping manner of a codeword corresponding to the at least one transport block to a transport layer according to an index of a transport block used for current data transmission in the at least one transport block and the at least one DMRS port group, and comprises:
    if the index of the transport block used for current data transmission is k, the processing unit determines to map the codeword corresponding to the transport block used for current data transmission in the at least one transport block to MkA transport layer, wherein MkA number of DMRS ports included for a kth of the at least one DMRS port group.
  20. The terminal device of claim 15, wherein if the transport block information includes the number of the at least one transport block,
    the processing unit is specifically configured to:
    and determining the DMRS port adopted by each transmission layer according to the number of the at least one transmission block and the at least one DMRS port group.
  21. The terminal device of claim 20, wherein the processing unit determines, based on the number of the at least one transport block and the at least one DMRS port group, a DMRS port to be used for each transport layer, and wherein the DMRS port to be used for each transport layer comprises at least one of:
    if the number of the at least one transmission block is 1, the processing unit determines that all DMRS ports in the at least one DMRS port group are adopted by a transmission layer mapped by a code word corresponding to the at least one transmission block;
    if the number of the at least one transport block is 2 and the number of the at least one DMRS port group is 1, the processing unit determines that a transport layer mapped by a codeword corresponding to a first transport block in the at least one transport block adopts a first transport layer in the at least one DMRS port group
    Figure PCTCN2018109723-APPB-100007
    A number of DMRS ports, wherein,
    Figure PCTCN2018109723-APPB-100008
    denotes rounding down, P being the number of transport layers used for the current data transmissionDestination or number of ports in the at least one DMRS port group;
    if the number of the at least one transmission block and the number of the at least one DMRS port group are K, the processing unit determines that a transmission layer mapped by a codeword corresponding to a kth transmission block in the at least one transmission block adopts a DMRS port in the kth DMRS port group in the at least one DMRS port group, wherein K is an integer greater than or equal to 2, and K is a positive integer less than or equal to K.
  22. The terminal device of claim 15, wherein if the transport block information includes an index of a transport block of the at least one transport block used for current data transmission,
    the processing unit is specifically configured to:
    and determining the DMRS port adopted by each transmission layer according to the index of the transmission block used for current data transmission in the at least one transmission block and the at least one DMRS port group.
  23. The terminal device of claim 22, wherein the processing unit determines the DMRS port used by each transport layer according to the index of the transport block of the at least one transport block used for the current data transmission and the at least one DMRS port group, comprises:
    if the index of the transmission block used for current data transmission is k, the processing unit determines that the DMRS port in the kth DMRS port group in the at least one DMRS port group is adopted by the transmission layer mapped by the codeword corresponding to the transmission block used for current data transmission in the at least one transmission block, where k is an integer greater than or equal to 1.
  24. The terminal device according to any one of claims 14 to 23, wherein if the number of the at least one transport block is 2, a codeword corresponding to a first transport block in the at least one transport block is codeword 0, and a codeword corresponding to a second transport block in the at least one transport block is codeword 1.
  25. The terminal device according to any of claims 14 to 24, wherein the communication unit is further configured to receive transport block information of the at least one transport block and the at least one DMRS port group, indicated by a network device through downlink control information, DCI.
  26. The terminal device of any of claims 14 to 25, wherein different ones of the at least one DMRS port groups are associated with different transmission configuration indications TCI status or have different quasi co-located QCL hypotheses.
  27. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 13.
  28. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 13.
  29. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 13.
  30. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 13.
  31. A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 1-13.
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