WO2020073257A1

WO2020073257A1 - Wireless communication method and terminal device

Info

Publication number: WO2020073257A1
Application number: PCT/CN2018/109723
Authority: WO
Inventors: 陈文洪; 史志华
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-10-10
Filing date: 2018-10-10
Publication date: 2020-04-16
Also published as: CN111801906A; CN111801906B

Abstract

Provided are a wireless communication method and a terminal device, wherein same can support layer mapping in both single-TRP/panel transmission and multiple-TRP/panel transmission. The method comprises: a terminal device determining first information according to transport block information of at least one transport block and at least one DMRS port group, wherein the first information comprises the way in which mapping from a codeword corresponding to the at least one transport block to a transport layer is conducted and/or a DMRS port used by each transport layer; and the terminal device mapping the codeword corresponding to the at least one transport block to the transport layer based on the first information, and transmitting mapped data, and/or, the terminal device respectively performing DMRS transmission on the DMRS port used by each transport layer based on the first information.

Description

Wireless communication method and terminal equipment

Technical field

Embodiments of the present application relate to the field of communications, and more specifically, to wireless communication methods and terminal devices.

Background technique

In the New Radio (NR) system, multiple transmission points (Transmission / Reception Point, TRP) or multiple antenna array blocks (Panel) can simultaneously transmit downlink signals to terminal devices, and signals transmitted by different TRP / Panel Different beams can be used. The network device can schedule the downlink transmission of multiple TRP / panels through the same downlink control information (Downlink Control Information, DCI), in which the data of different TRP / panels can be transmitted using different DMRS port groups, and each demodulation reference signal ( Demodulation, Reference, and DMRS) port groups can have their own QCL assumptions. At present, the terminal device can only support layer mapping and DMRS port mapping in the case of a single TRP / panel, and cannot meet the requirement of simultaneous transmission of multiple TRP / panels, which may result in poor downlink transmission performance.

Summary of the invention

The embodiments of the present application provide a wireless communication method and a terminal device. The terminal device can determine the currently used code word to transmission layer mapping method according to the configuration of the transmission block and the DMRS port group, and at the same time determine the DMRS port used by each transmission layer Thus, without additional signaling overhead, it is possible to support layer mapping in a single TRP / panel transmission and multiple TRP / panel transmissions.

In a first aspect, a wireless communication method is provided. The method includes:

The terminal device determines first information according to the transport block information of at least one transport block and at least one DMRS port group, where the first information includes a mapping method of a codeword corresponding to the at least one transport block to a transport layer and / or each transport layer DMRS port used;

The terminal device performs mapping of the codeword corresponding to the at least one transport block to the transmission layer based on the first information, and transmits the data after the mapping, and / or the terminal device adopts each transmission layer based on the first information DMRS transmission on the DMRS port.

Specifically, the terminal device performs mapping of the codeword corresponding to the at least one transport block to the transport layer based on the mapping mode, and transmits the data after the mapping, and / or the terminal device is based on the DMRS port adopted by each transport layer DMRS transmission is performed on the DMRS ports adopted by each transmission layer.

Optionally, the transport block information of the at least one transport block and the at least one DMRS port group may be configured by the network device.

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 may be from multiple TRP / panels.

In a second aspect, a terminal device is provided for performing the method in the first aspect.

Specifically, the terminal device includes a functional module for performing the method in the first aspect described above.

In a third aspect, a terminal device is provided, 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 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 a computer program from the memory, so that the device installed with the chip executes the method as described in the first aspect above.

In a fifth aspect, a computer-readable storage medium is provided for storing a computer program, which causes the computer to execute the method in the first aspect described above.

According to a sixth aspect, there is provided a computer program product, including computer program instructions, the computer program instructions causing a computer to perform the method in the first aspect described above.

In a seventh aspect, a computer program is provided, which when run on a computer, causes the computer to execute the method in the first aspect described above.

Through the above technical solution, the terminal device can determine the mapping method of the codeword corresponding to at least one transport block to the transport layer and / or the DMRS adopted by each transport layer according to the transport block information of at least one transport block and at least one DMRS port group Port, so that the terminal device can perform mapping of the codeword corresponding to at least one transport block to the transmission layer based on the determined mapping mode, and transmit the data after the mapping, and / or the DMRS adopted by the terminal device at each transmission layer DMRS transmission of each transport layer is performed on the port separately. Further, without additional signaling overhead, it is possible to support layer mapping in two cases of single TRP / panel transmission and multiple TRP / panel transmission.

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.

2 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.

FIG. 3 is a schematic block diagram of a terminal device according to an embodiment of the present application.

4 is a schematic block diagram of a communication device according to an embodiment of the present application.

FIG. 5 is a schematic block diagram of a chip according to an embodiment of the present application.

6 is a schematic block diagram of a communication system according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of this application.

The embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (Wideband Code) Division Multiple Access (WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, new wireless (New Radio, NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum, NR-U) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Network (WLAN), Wireless Fidelity (WiFi), next-generation communication system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, device to device (Device to Device, D2D) communication, machine-to-machine (M2M) communication, machine type communication (MTC), and vehicle-to-vehicle (V2V) communication, etc. The embodiments of the present application can also be applied to these communications system.

Optionally, the communication system in the embodiments of the present application may be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) configuration. Web scene.

The embodiments of the present application do not limit the applied spectrum. For example, the embodiments of the present application may be applied to licensed spectrum or unlicensed spectrum.

Exemplarily, the 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, terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located within the coverage area.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

It should be understood that the devices with communication functions in the network / system in the embodiments of the present application may be referred to as communication devices. 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 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in the embodiments of the present application.

The embodiments of the present application describe various embodiments in combination with a terminal device and a network device, where the terminal device may also be called a user equipment (User Equipment (UE), 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, etc. The terminal equipment can be a station (STAION, ST) in the WLAN, it can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, and next-generation communication systems, such as terminal devices in NR networks or Terminal equipment in the public land mobile network (PLMN) network that will evolve in the future.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices can also be referred to as wearable smart devices, which is a general term for applying wearable technology to intelligently design everyday wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions that do not depend on smartphones, such as smart watches or smart glasses, and only focus on a certain type of application functions, and need to cooperate with other devices such as smartphones Use, such as various smart bracelets and smart jewelry for sign monitoring.

The network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, or a WCDMA A base station (NodeB, NB) can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network Or network equipment in the PLMN network that will evolve in the future.

In the embodiment of the present application, the network device provides services for the cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be the network device (for example The cell corresponding to the base station) can belong to a macro base station or a base station corresponding to a small cell (Small cell), where the small cell can include: a metro cell, a micro cell, and a pico cell cells), femtocells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

FIG. 2 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 2, the method 200 may include the following content:

S210. The terminal device determines first information according to transmission block information of at least one transmission block and at least one DMRS port group, where the first information includes a mapping mode and / or each of codewords corresponding to the at least one transmission block to the transmission layer DMRS port used by the transport layer;

S220, the terminal device performs mapping of the codeword corresponding to the at least one transport block to the transmission layer based on the first information, and transmits the data after the mapping, and / or the terminal device based on the first information in each transmission layer DMRS transmission is performed on the adopted DMRS ports respectively.

Specifically, the terminal device performs mapping of the codeword corresponding to the at least one transport block to the transmission layer based on the mapping mode, and transmits the data after the mapping, and / or the terminal device is based on the DMRS adopted by each transmission layer The port performs DMRS transmission on the DMRS port adopted by each transmission layer.

During specific implementation, the terminal device may determine the mapping mode of the codeword corresponding to the at least one transport block to the transport layer according to the transport block information of the at least one transport block and the at least one DMRS port group, and then perform the at least one transmission based on the mapping mode The mapping of the codeword corresponding to the block to the transmission layer, and the data after the mapping is transmitted.

In addition, the terminal device can also determine the DMRS port used by each transport layer according to the transport block information of at least one transport block and at least one DMRS port group, and then perform DMRS transmission on the DMRS port used by each transport 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 may be from multiple TRP / 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 pre-configured for 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 the network device. For example, the terminal device receives the transport block information of the at least one transport block and the at least one DMRS port group indicated by the network device through downlink control information (Downlink Control Information (DCI)).

Optionally, as an example 1 of the present application, the network device may first indicate all DMRS ports contained in each DMRS port group in at least one DMRS port group through Radio Resource Control (RRC) signaling (ie, DMRS grouping method) ), And then instruct the DMRS ports in the at least one DMRS port group for current data transmission through DCI signaling, so as to determine the DMRS ports in the DMRS port group used for current data transmission. For example, the network device instructs the DMRS port group 1 to include the DMRS port {0,1,4,5} through RRC signaling, and the DMRS port group 2 includes the DMRS port {2,3,6,7}, and then indicates the current data transmission through the DCI The DMRS port used is {0,1,2,3}, so that the terminal device can determine that the current data transmission uses 2 DMRS port groups, that is, DMRS port {0,1} in DMRS port group 1 and DMRS port group 2 DMRS port {2,3}.

Optionally, as Example 2 of the present application, the network device may also directly indicate the DMRS port included in each DMRS port group in at least one DMRS port group currently used for transmission through DCI. For example, the network device indicates through DCI that the current transmission adopts the DMRS port {0,1} in the DMRS port group 1 and the DMRS port {2,3} in the DMRS port group 2, where the DMRS port group 1 includes the DMRS port {0, 1,4,5}, DMRS port group 2 contains DMRS ports {2,3,6,7}.

Optionally, in the embodiment of the present application, the transmission block information includes the number of the at least one transmission block or the index of the transmission block used for current data transmission in the at least one transmission block.

Specifically, the network device may notify the terminal device whether the transmission block is disabled (disabled) by indicating the redundancy version (Redundancy, Version, RV) and modulation coding scheme (Modulation and Coding Scheme, MCS) of a transmission block in the DCI.

For example, if both transmission blocks can be used for data transmission (enabled), the number of transmission blocks is 2, and the transmission blocks used in the current transmission are transmission block 1 and transmission block 2.

For another example, if only one transmission block can be used for data transmission, the number of transmission blocks is 1, and the allowed transmission block may be transmission block 1 or transmission block 2.

Optionally, in an embodiment of the present application, different DMRS port groups in the at least one DMRS port group are associated with different Transmission Configuration Indicator (Transmission Configuration Indicator, TCI) status or have different quasi-co-located (Quasi-co-located) , QCL) hypothesis.

It should be noted that the TCI status can be used to indicate QCL information, and the QCL information can be divided into 4 types (Type), for example, Type A-Type D, where Type D is used to cooperate with the terminal device for beam reception .

Optionally, in the embodiment of the present application, if the number of the at least one transmission block is 2, the codeword corresponding to the first transmission block in the at least one transmission block is codeword 0, and the at least one transmission block The codeword corresponding to the second transport block is codeword 1.

Optionally, in the embodiment of the present application, if the number of the at least one transmission block is 1, the codeword corresponding to the at least one transmission block is codeword 0.

Optionally, in the embodiment of the present application, if the transmission block information includes the number of the at least one transmission block, the terminal device may determine the at least one transmission according to the number of the at least one transmission block and the at least one DMRS port group The mapping method of the codeword corresponding to the block to the transport layer.

Optionally, as Example 3 of the present application, the terminal device determines the mapping method of the codeword corresponding to the at least one transport block to the transport layer according to the number of the at least one transport block and the at least one DMRS port group, which may include the following At least one of:

If the number of the at least one transmission block is 1, the terminal device determines that the codeword corresponding to the at least one transmission block is mapped to all transmission 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 terminal device determines that the codeword corresponding to the first transport block in the at least one transport block is mapped to the front

Transport layers, mapping the codeword corresponding to the second transport block in the at least one transport block to the remaining transport layers, where,

Indicates rounding down, P is the number of transport layers used for current 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 terminal device determines that the codeword corresponding to the first transport block in the at least one transport block is mapped to the first M The transport layer, mapping the codeword corresponding to the 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 DMRS port group predefined in the at least one DMRS port group, 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 terminal device determines that the codeword corresponding to the k-th transport block in the at least one transport block is mapped 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.

It should be noted that, in this example three, the information of the transport layer may be the rank indication (RankIndication, RI) or sounding reference signal (SRS) resource indication (SRSResourceIndicator, SRI) of the terminal device through DCI ) Instructions to get it.

Optionally, in the third example, the predefined one DMRS port group may be the first DMRS port group in the at least one DMRS port group, or may be the second DMRS port group, and so on.

Typically, in the third example, the number of the at least one transport block is 2, and the number of the at least one DMRS port group is 2, and the codeword corresponding to the first transport block in the at least one transport block is mapped to the front M transmission layers, the codeword corresponding to the second transmission block is mapped to the remaining transmission layers, and M is the number of DMRS ports in the first DMRS port group in the 2 DMRS port groups.

Optionally, in the third example, the codeword corresponding to the first transmission block in the at least one transmission block is mapped to the first to M1th transmission layers, and the codeword corresponding to the second transmission block is mapped to the M1th transmission layer. From +1 to M1 + M2 transmission layers, the codeword corresponding to the third transmission block is mapped to M1 + M2 + 1 to M1 + M2 + M3 transmission layers, and so on. Where, Mk is the number of DMRS ports in the k-th DMRS port group in the at least one DMRS port group.

Optionally, in the embodiment of the present 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 uses the index of the transmission block used for current data transmission in the at least one transmission block. The index of the transport block and the at least one DMRS port group determine the mapping mode of the codeword corresponding to the at least one transport block to the transport layer.

Optionally, as Example 4 of the present application, if the index of the transport block used for current data transmission is k, the terminal device determines to map the codeword corresponding to the transport block used for current data transmission in the at least one transport block Up to Mk transmission layers, where Mk is the number of DMRS ports included in the k-th DMRS port group in the at least one DMRS port group.

For example, in Example 4, assuming that the number of the at least one transmission block is 1, and the at least one DMRS port group includes two DMRS port groups {0} and {2,3,6}, the current data transmission adopts the transmission block At 1 (that is, when transmission block 2 is turned off), the codeword corresponding to this transmission block is mapped to 1 transmission layer; when the current data transmission uses transmission block 2 (that is, when transmission block 1 is turned off), the code corresponding to this transmission block Words are mapped to 3 transport layers.

Preferably, in this example four, it is generally used when the number of transmission blocks is one.

Optionally, in the embodiment of the present application, if the transport block information includes the number of the at least one transport block, the terminal device determines the each transport layer according to the number of the at least one transport block and the at least one DMRS port group The DMRS port used.

Optionally, as a fifth example of the present application, the terminal device determines 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, including at least one of the following:

If the number of the at least one transmission block is 1, the terminal device determines that the transmission layer of the codeword mapping corresponding to the at least one transmission block uses all DMRS ports in the at least one DMRS port group;

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 terminal device determines that the transport layer of the codeword mapping corresponding to the first transport block in the at least one transport block adopts this Front of at least one DMRS port group

DMRS ports, of which,

Indicates rounding down, P is 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 terminal device determines that the transport layer mapped to the codeword corresponding to the k-th transport block in the at least one transport block uses the at least one DMRS port The DMRS port in the k-th 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.

For example, in Example 5, assuming that the number of the at least one transmission block is 2, and the at least one DMRS port group includes two DMRS port groups {0} and {2,3,6}, the first transmission block corresponds to The transmission layer of the codeword mapping of the DMRS port uses {0}, and the transmission layer of the codeword mapping corresponding to the second transmission block uses the DMRS port {2,3,6}.

Optionally, in the embodiment of the present 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 uses the index of the transmission block used for current data transmission in the at least one transmission block. The index of the transport block and the at least one DMRS port group determine the DMRS port used by each transport layer.

Optionally, as Example 6 of the present application, if the index of the transmission block used for current data transmission is k, the terminal device determines the codeword mapping corresponding to the transmission block used for current data transmission in the at least one transmission block The transport layer uses the DMRS ports in the k-th 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 Example 6, assuming that the number of the at least one transmission block is 1, and the at least one DMRS port group includes two DMRS port groups {0} and {2,3,6}, the current data transmission adopts the transmission block At 1 (that is, when transport block 2 is closed), the transport layer of the codeword mapping corresponding to this transport block uses the DMRS port {0}; when the current transmission uses transport block 2 (that is, when transport block 1 is closed), the transport block The corresponding codeword mapping transmission layer uses DMRS ports {2, 3, 6}.

Preferably, this example six is generally used when the number of transmission blocks is one.

Therefore, in the embodiment of the present application, the terminal device can determine the currently used mapping method of the codeword to the transmission layer according to the configuration of the transmission block and the DMRS port group, and at the same time determine the DMRS port used by each transmission layer, so that no additional The signaling overhead can support layer mapping in two cases of single TRP / panel transmission and multiple TRP / panel transmission.

FIG. 3 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As shown in FIG. 3, the terminal device 300 includes:

The processing unit 310 is configured to determine first information according to transmission block information of at least one transmission block and at least one DMRS port group, where the first information includes a mapping manner of codewords corresponding to the at least one transmission block to the transmission layer and / or DMRS port used by each transport layer;

The communication unit 320 is configured to perform mapping of the codeword corresponding to the at least one transmission block to the transmission layer based on the first information, and transmit the data after the mapping, and / or, based on the first information, adopted in each transmission layer DMRS transmission on the DMRS port.

Optionally, the transport block information includes the number of the at least one transport block or the index of the transport block used 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 used for:

According to the number of the at least one transport block and the at least one DMRS port group, the mapping mode of the codeword corresponding to the at least one transport block to the transport layer is determined.

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, the mapping method of the codeword corresponding to the at least one transport block to the transport layer, including at least one of the following:

If the number of the at least one transport block is 1, the processing unit 310 determines that the codeword corresponding to the at least one transport block is mapped 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 that the codeword corresponding to the first transport block in the at least one transport block is mapped to the front

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 that the codeword corresponding to the first transport block in the at least one transport block is mapped to the first M Transport layers, mapping the codeword corresponding to the 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 DMRS port group predefined in the at least one DMRS port group , 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 that the codeword corresponding to the k-th transport block in the at least one transport block is mapped to Mk transport layers , Where Mk is the number of DMRS ports in the k-th 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 used for:

The mapping mode of the codeword corresponding to the at least one transport block to the transport layer is determined 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.

Optionally, the processing unit 310 determines the mapping method of the codeword corresponding to the at least one transport block to the 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, include:

If the index of the transmission block used for current data transmission is k, the processing unit 310 determines that the codeword corresponding to the transmission block used for current data transmission in the at least one transmission block is mapped to Mk transmission layers, where Mk is The number of DMRS ports included in the k-th DMRS port group in the at least one DMRS port group.

The processing unit 310 is specifically used for:

According to the number of the at least one transport block and the at least one DMRS port group, the DMRS port adopted by each transport layer is determined.

Optionally, the processing unit 310 determines the DMRS port used by each transport layer according to the number of the at least one transport block and the at least one DMRS port group, including at least one of the following:

If the number of the at least one transport block is 1, the processing unit 310 determines that the transport layer of the codeword mapping corresponding to the at least one transport block uses all DMRS ports in the at least one DMRS port group;

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 of the codeword mapping corresponding to the first transport block in the at least one transport block adopts The front of the at least one DMRS port group

DMRS ports, of which,

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 to the codeword corresponding to the k-th transport block in the at least one transport block uses the at least one DMRS DMRS ports in the k-th DMRS port group in the 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.

The processing unit 310 is specifically used for:

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, the DMRS port adopted by each transport layer is determined.

Optionally, the processing unit 310 determines the DMRS port used by each 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, including:

If the index of the transport block used for current data transmission is k, the processing unit 310 determines that the transport layer mapped to the codeword corresponding to the transport block used for current data transmission in the at least one transport block adopts the at least one DMRS port group DMRS ports in the k-th DMRS port group of, where k is an integer greater than or equal to 1.

Optionally, if the number of the at least one transmission block is 2, the codeword corresponding to the first transmission block in the at least one transmission block is codeword 0, and the second transmission block in the at least one transmission block corresponds to The codeword of is codeword 1.

Optionally, the communication unit 320 is further configured to receive the transport block information of the at least one transport block and the at least one DMRS port group indicated by the network device through DCI.

Optionally, different DMRS port groups in the at least one DMRS port group are associated with different TCI states or have different QCL assumptions.

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 method embodiment 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 method shown in FIG. 2 For the sake of brevity, the corresponding process of the terminal device in 200 will not be repeated here.

FIG. 4 is a schematic structural diagram of a communication device 400 provided by an embodiment of the present application. The communication device 400 shown in FIG. 4 includes a processor 410, and the processor 410 can call and run a computer program from the memory to implement the method in the embodiments of the present application.

Optionally, as shown in FIG. 4, the communication device 400 may further include a memory 420. The processor 410 can call and run a computer program from the memory 420 to implement the method in the embodiments of the present application.

The memory 420 may be a separate device independent of the processor 410, or may be integrated in 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, specifically, may send information or data to other devices, or receive other Information or data sent by the device.

Among them, the transceiver 430 may include a transmitter and a receiver. 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 according to an embodiment of the present application, and the communication device 400 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. .

Optionally, the communication device 400 may specifically be a mobile terminal / terminal device according to an embodiment of this application, and the communication device 400 may implement the corresponding process implemented by the mobile terminal / terminal device in each method of the embodiment of this application, for simplicity And will not be repeated here.

5 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 500 shown in FIG. 5 includes a processor 510, and the processor 510 can call and run a computer program from the 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. The processor 510 can call and run a computer program from the memory 520 to implement the method in the embodiments of the present application.

The memory 520 may be a separate device independent of the processor 510, or may be integrated in the processor 510.

Optionally, the chip 500 may further include an input interface 530. The processor 510 can control the input interface 530 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

Optionally, the chip 500 may further include an output interface 540. The processor 510 can control the output interface 540 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.

Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the methods of the embodiments of the present application. No longer.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-level chips, system chips, chip systems, or system-on-chip chips.

FIG. 6 is a schematic block diagram of a communication system 600 provided by 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.

Among them, the terminal device 610 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 620 can be used to implement the corresponding functions implemented by the network device in the above method. .

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has signal processing capabilities. 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 above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an existing programmable gate array (Field Programmable Gate Array, FPGA), or other available Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed. 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 conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding 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.

It can be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the 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), electronic Erasable programmable read only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a 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 Rate 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, DR RAM). 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.

It should be understood that the foregoing memory is exemplary but not limiting. For example, the memory in the embodiments of the present application may also be 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 (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memories in the embodiments of the present application are intended to include but are not limited to these and any other suitable types of memories.

Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments 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 of the embodiments of the present application For the sake of brevity, I will not repeat them here.

An embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. Repeat again.

Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal / terminal device in each method of the embodiments of the present application, For brevity, I will not repeat them here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. And will not be repeated here.

Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application, and when the computer program runs on the computer, the computer is implemented by the mobile terminal / terminal device in performing various methods of the embodiments of the present application For the sake of brevity, I will not repeat them here.

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. Whether these functions are executed in hardware or software depends on the specific application of the technical solution 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.

Those skilled in the art can clearly understand that for the convenience and conciseness of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a division of logical functions. In actual implementation, there may be other divisions, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

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 purpose of the solution of this embodiment.

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 are 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 may be stored in a computer-readable storage medium. Based on such an 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, and 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, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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 wireless communication method, characterized in that it includes:

The terminal device determines the first information according to the transport block information of at least one transport block and the at least one demodulation reference signal DMRS port group, where the first information includes the mapping mode of the codeword corresponding to the at least one transport block to the transport layer and / Or the DMRS port used by each transport layer;

The terminal device performs mapping of the codeword corresponding to the at least one transport block to the transport layer based on the first information, and transmits the data after the mapping, and / or the terminal device based on the first information in each DMRS transmission is performed on the DMRS ports used by each transmission layer.
The method according to claim 1, wherein 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.
The method according to claim 2, wherein if the transport block information includes the number of the at least one transport block,

The terminal device determining the first information according to the transport block information of at least one transport block and at least one DMRS port group includes:

The terminal device determines the mapping mode of the codeword corresponding to the at least one transport block to the transport layer according to the number of the at least one transport block and the at least one DMRS port group.
The method according to claim 3, wherein the terminal device determines the codeword corresponding to the at least one transport block to the transport layer according to the number of the at least one transport block and the at least one DMRS port group Mapping method, including at least one of the following:

If the number of the at least one transport block is 1, the terminal device 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 terminal device determines to map the codeword corresponding to the first transport block in the at least one transport block To the front
Transport layers, mapping the codeword corresponding to the second transport block in the at least one transport block to the remaining transport layers, where,
Indicates rounding down, P is the number of transport layers used for current 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 terminal device determines to map the codeword corresponding to the first transport block in the at least one transport block To the first M transport layers, map the codeword corresponding to the second transport block in the at least one transport block to the remaining transport layers, where M is a DMRS port group predefined in the at least one DMRS port group Number of DMRS ports in N, 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 terminal device determines to map the codeword corresponding to the k-th transport block in the at least one transport block to M k transmission layers, where M k is the number of DMRS ports in the k-th 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.
The method according to claim 2, wherein 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 determining the first information according to the transport block information of at least one transport block and at least one DMRS port group includes:

The terminal device determines the mapping mode of the codeword corresponding to the at least one transport block to the 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.
The method according to claim 5, wherein the terminal device determines the at least one transmission according to an index of a transmission block used for current data transmission in the at least one transmission block and the at least one DMRS port group The mapping method of the codeword corresponding to the block to the transmission layer includes:

If the index of the transport block used for current data transmission is k, the terminal device determines to map codewords corresponding to the transport block used for current data transmission in the at least one transport block to M k transport layers, where, M k is the number of DMRS ports included in the k-th DMRS port group in the at least one DMRS port group.
The method according to claim 2, wherein if the transport block information includes the number of the at least one transport block,

The terminal device determining the first information according to the transport block information of at least one transport block and at least one DMRS port group includes:

The terminal device determines the DMRS port adopted by each transport layer according to the number of the at least one transport block and the at least one DMRS port group.
The method according to claim 7, wherein the terminal device determines the DMRS port used by each transport layer according to the number of the at least one transport block and the at least one DMRS port group, including the following At least one item:

If the number of the at least one transport block is 1, the terminal device determines that the transport layer of the codeword mapping corresponding to the at least one transport block uses all DMRS ports in the at least one DMRS port group;

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 terminal device determines the codeword mapping corresponding to the first transport block in the at least one transport block The transport layer uses the front of the at least one DMRS port group
DMRS ports, of which,
Indicates rounding down, P is the number of transmission 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 terminal device determines that the transport layer of the codeword mapping corresponding to the k-th transport block in the at least one transport block adopts The DMRS ports in the k-th DMRS port group in 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.
The method according to claim 2, wherein 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 determining the first information according to the transport block information of at least one transport block and at least one DMRS port group includes:

The terminal device determines the DMRS port used by each 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.
The method according to claim 9, wherein the terminal device determines the location of each 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 DMRS ports used include:

If the index of the transport block used for current data transmission is k, the terminal device determines that the transport layer mapped to the codeword corresponding to the transport block used for current data transmission in the at least one transport block uses the at least one DMRS port The DMRS port in the k-th DMRS port group in the group, where k is an integer greater than or equal to 1.
The method according to any one of claims 1 to 10, wherein if the number of the at least one transport block is 2, the codeword corresponding to the first transport block in the at least one transport block is Codeword 0, the codeword corresponding to the second transport block in the at least one transport block is codeword 1.
The method according to any one of claims 1 to 11, wherein the method further comprises:

The terminal device receives the first information indicated by the network device through downlink control information DCI.
The method according to any one of claims 1 to 12, wherein different DMRS port groups in the at least one DMRS port group are associated with different transmission configuration indication TCI states or have different quasi co-located QCL assumptions.
A terminal device is characterized by comprising:

The processing unit is configured to determine first information according to transmission block information of at least one transmission block and at least one demodulation reference signal DMRS port group, where the first information includes a codeword corresponding to the at least one transmission block to a transmission layer Mapping method and / or DMRS port used by each transport layer;

A communication unit, configured to perform mapping of the codeword corresponding to the at least one transport block to the transmission layer based on the first information, and transmit the data after the mapping, and / or based on the first information in each transmission layer DMRS transmission is performed on the adopted DMRS ports respectively.
The terminal device according to claim 14, wherein 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.
The terminal device according to claim 15, wherein if the transport block information includes the number of the at least one transport block,

The processing unit is specifically used for:

According to the number of the at least one transport block and the at least one DMRS port group, a mapping method of the codeword corresponding to the at least one transport block to the transport layer is determined.
The terminal device according to claim 16, wherein the processing unit determines the codeword corresponding to the at least one transport block to the transport layer according to the number of the at least one transport block and the at least one DMRS port group Mapping method, including at least one of the following:

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 the codeword corresponding to the first transport block in the at least one transport block To the front
Transport layers, mapping the codeword corresponding to the second transport block in the at least one transport block to the remaining transport layers, where,
Indicates rounding down, P is the number of transport layers used for current 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 determines to map the codeword corresponding to the first transport block in the at least one transport block To the first M transport layers, map the codeword corresponding to the second transport block in the at least one transport block to the remaining transport layers, where M is a DMRS port group predefined in the at least one DMRS port group Number of DMRS ports in N, 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 determines to map the codeword corresponding to the k-th transport block in the at least one transport block to M k transmission layers, where M k is the number of DMRS ports in the k-th 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.
The terminal device according to claim 15, wherein 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 is specifically used for:

The mapping mode of the codeword corresponding to the at least one transport block to the transport layer is determined 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.
The terminal device according to claim 18, wherein the processing unit determines the at least one 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 The mapping method of the codeword corresponding to the transport block to the transport layer includes:

If the index of the transport block used for current data transmission is k, the processing unit determines to map codewords corresponding to the transport block used for current data transmission in the at least one transport block to M k transport layers, where, M k is the number of DMRS ports included in the k-th DMRS port group in the at least one DMRS port group.
The terminal device according to claim 15, wherein if the transport block information includes the number of the at least one transport block,

The processing unit is specifically used for:

According to the number of the at least one transport block and the at least one DMRS port group, determine the DMRS port used by each transport layer.
The terminal device according to claim 20, wherein the processing unit determines the DMRS port used by each transport layer according to the number of the at least one transport block and the at least one DMRS port group, including the following At least one of:

If the number of the at least one transport block is 1, the processing unit determines that the transmission layer of the codeword mapping corresponding to the at least one transport block uses all DMRS ports in the at least one DMRS port group;

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 the codeword mapping corresponding to the first transport block in the at least one transport block The transport layer uses the front of the at least one DMRS port group
DMRS ports, of which,
Indicates rounding down, P is the number of transmission 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 determines that the transport layer of the codeword mapping corresponding to the kth transport block in the at least one transport block adopts The DMRS ports in the k-th DMRS port group in 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.
The terminal device according to claim 15, wherein 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 is specifically used for:

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, determine the DMRS port used by each transport layer.
The terminal device according to claim 22, wherein the processing unit determines each transmission layer according to an index of a transmission block used for current data transmission in the at least one transmission block and the at least one DMRS port group The DMRS ports used include:

If the index of the transport block used for current data transmission is k, the processing unit determines that the transport layer mapped to the codeword corresponding to the transport block used for current data transmission in the at least one transport block uses the at least one DMRS port The DMRS port in the k-th DMRS port group in the group, where k is an integer greater than or equal to 1.
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, the codeword corresponding to the first transport block in the at least one transport block It is codeword 0, and the codeword corresponding to the second transport block in the at least one transport block is codeword 1.
The terminal device according to any one of claims 14 to 24, wherein the communication unit is further configured to receive the transport block information of the at least one transport block indicated by the network device through downlink control information DCI and the At least one DMRS port group.
The terminal device according to any one of claims 14 to 25, wherein different DMRS port groups in the at least one DMRS port group are associated with different transmission configuration indication TCI states or have different quasi co-located QCL assumptions .
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any of claims 1 to 13 One of the methods.
A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 13.
A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 13.
A computer program product, characterized in that it includes computer program instructions which cause a computer to execute the method according to any one of claims 1 to 13.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 1 to 13.