CN112583547B - Method and equipment for determining and configuring mapping relation between TCI state and DMRS (demodulation reference signal) - Google Patents

Method and equipment for determining and configuring mapping relation between TCI state and DMRS (demodulation reference signal) Download PDF

Info

Publication number
CN112583547B
CN112583547B CN201910927902.2A CN201910927902A CN112583547B CN 112583547 B CN112583547 B CN 112583547B CN 201910927902 A CN201910927902 A CN 201910927902A CN 112583547 B CN112583547 B CN 112583547B
Authority
CN
China
Prior art keywords
dmrs
tci state
tci
group
configuration information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910927902.2A
Other languages
Chinese (zh)
Other versions
CN112583547A (en
Inventor
李岩
金婧
王飞
郑毅
王菡凝
王启星
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
Original Assignee
China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Mobile Communications Group Co Ltd, China Mobile Communications Ltd Research Institute filed Critical China Mobile Communications Group Co Ltd
Priority to CN201910927902.2A priority Critical patent/CN112583547B/en
Priority to PCT/CN2020/114702 priority patent/WO2021057505A1/en
Publication of CN112583547A publication Critical patent/CN112583547A/en
Application granted granted Critical
Publication of CN112583547B publication Critical patent/CN112583547B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a method and equipment for determining and configuring mapping relation between a TCI state and a DMRS (demodulation reference signal), wherein the method for determining the mapping relation between the TCI state and the DMRS comprises the following steps: receiving downlink control information or high-level parameter configuration information; and determining the corresponding relation between the N TCI states and M DMRS CDM groups or Y DMRS ports, wherein N, M and Y are positive integers which are larger than or equal to 1. The embodiment of the invention solves the problem of the corresponding relation between a plurality of TCI states indicated by DCI received by a terminal and PDSCH sent by a plurality of TRPs by determining the corresponding relation between the TCI states and DMRS CDM groups or DMRS ports.

Description

Method and equipment for determining and configuring mapping relation between TCI state and DMRS (demodulation reference signal)
Technical Field
The invention relates to the technical field of wireless communication, in particular to a method and equipment for determining and configuring a mapping relation between a TCI (train control interface) state and a DMRS (demodulation reference signal).
Background
A Multi-TRP (Multiple-Transmission and Reception Point) refers to Multiple Transmission points, where the Multiple Transmission points cooperate to transmit data for one terminal or jointly receive data sent by one terminal, and Multiple Transmission points participating in cooperation generally refer to Multiple cells, where the Multiple cells may be from the same base station or cells under different base stations.
In Multi-TRP, one communication scenario works as follows: a Physical Downlink Control Channel (PDCCH) is transmitted by 1 Transmission and Reception Point (TRP), and a plurality of TRPs all transmit a Physical Downlink Shared Channel (PDSCH).
The step of indicating a Transmission Configuration indication status (TCI) in Downlink Control Information (DCI) includes 3 steps of: (1) Radio Resource Control (RRC) may configure N TCI states; (2) A Multiple Access Channel (MAC) Channel resource (CE) activates 8 sets of Transmission Configuration indication status (TCI status, transmission Configuration Indicator); (3) One group is indicated by a 3-bit number in Downlink Control Information (DCI), and indicates a plurality of TCI states matching PDSCH of a plurality of TRPs, but does not include a specific mapping relationship.
Therefore, when receiving the multiple TCI statuses indicated by the DCI, the terminal does not know how to correspond the multiple TCI statuses to the received PDSCH transmitted by the multiple TRPs. The TCI state is mainly used for the terminal to determine the large-scale related information and spatial reception beam information referred to by the received PDSCH, and if the terminal does not know the correspondence between each PDSCH and the TCI, the TCI state of the PDSCH cannot be determined, that is, the large-scale related information of the demodulated PDSCH and the spatial beam information of the received PDSCH cannot be determined.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a method and an apparatus for determining and configuring a mapping relationship between a TCI state and a Demodulation Reference Signal (DMRS), wherein a corresponding relationship between the TCI state and a DMRS Code Division Multiplexing group (CDM) or a DMRS port is determined, and then a one-to-one or one-to-many corresponding relationship between a plurality of TCI states indicated by the DCI and PDSCHs transmitted by a plurality of TRPs is solved, so as to determine large-scale related information for demodulating PDSCHs transmitted by different TRPs and receive spatial beam information for PDSCHs transmitted by different TRPs.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, a method for determining a mapping relationship between a TCI status and a DMRS is provided, and is applied to a terminal, and includes: receiving downlink control information or high-level parameter configuration information; and determining the corresponding relation between the N TCI states and M DMRS CDM groups or Y DMRS ports, wherein N, M and Y are positive integers which are more than or equal to 1.
Optionally, the downlink control information includes: the first TCI state corresponds to the group number of the DMRS CDM group, and is smaller than the group number of the DMRS CDM group corresponding to the second TCI state; or, the first TCI state corresponds to a group number of a DMRS CDM group, which is greater than a group number of a DMRS CDM group corresponding to the second TCI state.
Optionally, the downlink control information includes: the CDM group number of the DMRS port corresponding to the first TCI state is smaller than that of the DMRS port corresponding to the second TCI state; or the CDM group number of the DMRS port corresponding to the first TCI state is greater than the CDM group number of the DMRS port corresponding to the second TCI state.
Optionally, the high-layer parameter configuration information includes: x TCI state groups are configured, each TCI state group is associated with a specified parameter, wherein X is a positive integer greater than or equal to 1.
In a second aspect, a method for configuring a mapping relationship between a TCI state and a DMRS is further provided, and is applied to a network side, and includes: and sending downlink control information or high-level parameter configuration information, wherein the downlink control information or the high-level parameter configuration information is used for the terminal to determine the corresponding relation between the N TCI states and the M DMRS CDM groups or the Y DMRS ports, and N, M and Y are positive integers which are more than or equal to 1.
Optionally, the downlink control information includes: the first TCI state corresponds to the group number of the DMRS CDM group, and is smaller than the group number of the DMRS CDM group corresponding to the second TCI state; or, the first TCI state corresponds to a group number of a DMRS CDM group, which is greater than a group number of a DMRS CDM group corresponding to the second TCI state.
Optionally, the downlink control information includes: the CDM group number of the DMRS port corresponding to the first TCI state is smaller than that of the DMRS port corresponding to the second TCI state;
or the CDM group number of the DMRS port corresponding to the first TCI state is greater than the CDM group number of the DMRS port corresponding to the second TCI state.
Optionally, the high-layer parameter configuration information includes: x TCI state groups are configured, each TCI state group is associated with a specified parameter, wherein X is a positive integer greater than or equal to 1.
In a third aspect, a terminal is further provided, including: a transceiver and a processor; the transceiver is used for receiving downlink control information or high-level parameter configuration information; the processor is used for determining the corresponding relation between the N TCI states and M DMRS CDM groups or Y DMRS ports, wherein N, M and Y are positive integers which are larger than or equal to 1.
In a fourth aspect, there is also provided a terminal, including: the receiving and sending module is used for receiving downlink control information or high-level parameter configuration information; and the processing module is used for determining the corresponding relation between the N TCI states and the M DMRS CDM groups or the Y DMRS ports, wherein N, M and Y are positive integers which are more than or equal to 1.
In a fifth aspect, a network-side device is further provided, including: a transceiver and a processor; the transceiver is configured to send downlink control information or high-level parameter configuration information, where the downlink control information or the high-level parameter configuration information is used by the terminal to determine a correspondence between N TCI states and M DMRS CDM groups or Y DMRS ports, where N, M and Y are positive integers greater than or equal to 1.
In a fifth aspect, there is also provided a terminal, including: a processor, a memory and a processing program stored on the memory and operable on the processor to execute the method for determining the TCI status and mapping, the processor when executing implementing the method steps for determining the TCI status and DMRS mapping as described in the first aspect.
In a sixth aspect, a network-side device is further provided, including: the method comprises a processor, a memory and a processing program stored on the memory and capable of running downlink control information on the processor, wherein the processing program of the downlink control information realizes the steps of the configuration method of the mapping relationship between the TCI state and the DMRS according to the second aspect when being executed by the processor.
In a seventh aspect, a computer-readable storage medium is further provided, where a processing program of downlink control information is stored on the computer-readable storage medium, and when executed by a processor, the processing program of downlink control information implements the method steps for determining the mapping relationship between the TCI state and the DMRS according to the first aspect or implements the method steps for configuring the mapping relationship between the TCI state and the DMRS according to the second aspect.
In the embodiment of the invention, the terminal can determine the corresponding relation between the TCI state and the DMRS CDM group or the DMRS port according to the received downlink control information or the high-level parameter configuration information by receiving the downlink control information or the high-level parameter configuration information, so that the one-to-one or one-to-many corresponding relation between a plurality of TCI states indicated by the DCI and PDSCHs sent by a plurality of TRPs is solved, and the large-scale related information of the PDSCHs sent by demodulating different TRPs and the space beam information of the PDSCHs sent by receiving different TRPs are determined.
Drawings
Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a method for determining a mapping relationship between a TCI state and a DMRS according to an embodiment of the present invention;
fig. 3 is a schematic flowchart of a method for configuring a mapping relationship between a TCI state and a DMRS according to an embodiment of the present invention;
fig. 4A and 4B are schematic structural diagrams of a terminal according to an embodiment of the present invention;
fig. 5A and 5B are schematic structural diagrams of a network device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a network-side device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.
To achieve the objects of the present invention, as well as other objects set forth in the present embodiment, a communication system is provided in an embodiment of the present invention. Referring to the communication system of fig. 1, it is exemplarily given that the communication system includes at least one terminal and at least one TRP, which may include TRP101, TRP102, etc. In the embodiment of the present invention, in the communication with the network side, as shown in the figure, the terminal 801 may receive a TRP, such as a PDSCH transmitted by the TRP101, the terminal 801 communicates with the TRP101, and the TRP101 transmits data to the terminal 801. The terminal is in the coverage range of at least two TRPs, and the terminal can receive PDSCHs transmitted by at least two TRPs, such as PDSCH transmitted by TRP101 and PDSCH transmitted by TRP 102.
In the embodiment of the present invention, two different types of configuration principles are generally adopted for the PDSCH transmitted by TRP. Under the first type of configuration principle, different DMRS (Demodulation Reference Signal) groups are used for PDSCHs sent by different TRPs, each DMRS CDM (Code Division Multiplexing) group includes a plurality of different DMRS ports, and N PDSCHs can only select corresponding DMRS ports from N DMRS CDM groups. For example: DMRS CDM group 0= { port 0, port 1, port 4, port 5}; DMRS CDM group 1= { port 2, port 3, port 6, port 7}, and at this time, two different PDSCHs can only select corresponding DMRS ports from DMRS CDM group, DMRS port 0 can be used for PDSCH1, and DMRS port 2 can be used for pdschh 2. Optionally, under the second type of configuration principle, the PDSCH transmitted by N TRPs may select DMRS ports from more than N DMRS CDM groups, for example, DMRS CDM group 0= { port 0, port 1, port 6, port 7}; DMRS CDM group 1= { port 2, port 3, port 8, port 9}, DMRS CDM group 2= { port 4, port 5, port 10, port 11}, PDSCH1 may employ DMRS port 0, pdschh 2 may employ DMRS port 4.
Referring to fig. 2, fig. 2 is a flowchart illustrating a method for determining a mapping relationship between a TCI state and a DMRS according to an embodiment of the present invention, which is applied to a terminal, and includes the following specific steps:
step 201: receiving downlink control information or high-level parameter configuration information;
step 203: and determining the corresponding relation between the N TCI states and M DMRS CDM groups or Y DMRS ports, wherein N, M and Y are positive integers which are more than or equal to 1.
In this embodiment of the present invention, optionally, the downlink control information includes: the mapping relation between the TCI state and the DMRS CDM group is indicated semi-statically or dynamically in RRC/MAC CE/DCI or the mapping relation between the TCI state and the DMRS port is indicated in a DMRS port indication table.
Optionally, the high-layer parameter configuration information includes: in RRC, a plurality of TCI state groups are configured, each TCI state group is associated with a designated parameter, the designated parameter is associated with a CDM group or a DMRS port through TRP, and the corresponding relation between each TCI state and the CDM group or the DMRS port can be further known.
Optionally, the terminal determines, according to the received mapping relationship between the TCI state and the DMRS CDM group, the mapping relationship between the TCI state and the DMRS ports, or the specified parameters associated with the TCI state group, a corresponding relationship between the N TCI states and the M DMRS CDM groups or the Y DMRS ports, where N, M and Y are positive integers greater than or equal to 1.
Through the steps of the above embodiments, when the terminal receives the downlink control information or the higher layer parameter configuration information, the corresponding relationship between the N TCI states and the M DMRS CDM groups or the Y DMRS ports may be determined, and further, the corresponding relationship between the N TCI states and the PDSCH transmitted by different TRPs may be determined.
In this embodiment of the present invention, optionally, the downlink control information includes: mapping relation between TCI state and DMRS CDM group; wherein, the first TCI state corresponds to the group number of the DMRS CDM group, which is smaller than the group number of the DMRS CDM group corresponding to the second TCI state; or, the first TCI state corresponds to a group number of a DMRS CDM group, which is greater than a group number of a DMRS CDM group corresponding to the second TCI state.
The mapping relation between the TCI state and the DMRS CDM group is the corresponding relation between one or more TCI states and the DMRS CDM group. The corresponding relationship of the one or more TCI states to DMRS CDM groups may be indicated in RRC/MAC CE/DCI with W bits.
Referring to table 1, table 1 provides a mapping relationship between a TCI status and a DMRS CDM group according to an embodiment of the present invention. The mapping relationship between the TCI state and the DMRS CDM group is indicated semi-statically or dynamically in RRC/MAC CE/DCI.
Table 1: mapping relation between TCI state of DMRS configuration type 1 and DMRS CDM group
Figure GDA0003838493490000061
Specifically, the mapping relationship between the TCI status and the DMRS CDM group is indicated by 1 bit in RRC/MAC CE/DCI: 0 indicates that the first TCI state 0 corresponds to DMRS CDM group 0 and the second TCI state 1 corresponds to DMRS CDM group 1;1 indicates that the first TCI state 0 corresponds to DMRS CDM group 1, and the second TCI state 1 corresponds to DMRS CDM group 0.
Referring to table 2, table 2 provides a mapping relationship between a TCI status and a DMRS CDM group according to an embodiment of the present invention. The mapping relationship between the TCI state and the DMRS CDM group is indicated semi-statically or dynamically in RRC/MAC CE/DCI.
Table 2: mapping relationship between TCI state and DMRS CDM group of DMRS configuration type 2
Figure GDA0003838493490000071
Specifically, the mapping relationship between TCI status and DMRS CDM group is indicated with 3 bits in RRC/MAC CE/DCI: 000 indicates that the first TCI state 0 corresponds to DMRS CDM group 0 or the first TCI state 0 corresponds to DMRS CDM group 1 and the second TCI state 1 corresponds to DMRS CDM group 2;001 indicates that the first TCI state 0 corresponds to DMRS CDM group 0, the second TCI state 1 corresponds to DMRS CDM group 1 or the second TCI state 0 corresponds to DMRS CDM group 2.
It should be noted that tables 1 and 2 only indicate the mapping relationship between partial TCI status and DMRS CDM group, and the specific mapping relationship between TCI status and DMRS CDM group is not limited to that shown in the tables, but all the correspondence between TCI status and DMRS CDM group obtained by the steps of the method for determining the TCI status and DMRS mapping according to the present invention are within the protection scope of the present invention.
The terminal can determine the corresponding relation between the N TCI states and the M DMRS CDM groups by receiving the mapping relation between the TCI states and the DMRS CDM groups included in the downlink control information, and further can determine the corresponding relation between the N TCI states and the PDSCHs sent by the plurality of TRPs.
In this embodiment of the present invention, optionally, the downlink control information includes: mapping relation between TCI state and DMRS port; wherein the CDM group number of the DMRS port corresponding to the first TCI state is smaller than the CDM group number of the DMRS port corresponding to the second TCI state; or the CDM group number of the DMRS port corresponding to the first TCI state is greater than the CDM group number of the DMRS port corresponding to the second TCI state.
Optionally, the mapping relationship between the TCI status and the DMRS CDM port is: the DMRS port number corresponds to a CDM group number, each CDM group comprises one or more ports, one or two with the smallest group number in the CDM group corresponding to the DMRS port corresponding to the first TCI state, or one or two with the largest group number in the CDM group corresponding to the DMRS port corresponding to the first TCI state.
For example: for DMRS type 1, the first TCI state corresponds to DMRS ports 0, 1, 4 and 5, and the DMRS ports 0, 1, 4 and 5 correspond to CDM group 0; the second TCI state corresponds to DMRS ports 2, 3, 6, 7 and DMRS ports 2, 3, 6, 7 correspond to CDM group 1;
for DMRS type 2, the first TCI state corresponds to DMRS ports 0, 1, 6 and 7, and the DMRS ports 0, 1, 6 and 7 correspond to CDM group 0; the second TCI state corresponds to DMRS ports 2, 3, 8, 9 or DMRS ports 4, 5, 10, 11 and DMRS ports 2, 3, 8, 9 correspond to CDM group 1 and DMRS ports 4, 5, 10, 11 correspond to CDM group 2;
or the first TCI state corresponds to DMRS ports 2, 3, 8, 9 or DMRS ports 4, 5, 10, 11 and DMRS ports 2, 3, 8, 9 correspond to CDM group 1, DMRS ports 4, 5, 10, 11 correspond to CDM group 2; the second TCI state corresponds to DMRS ports 0, 1, 6, 7 and DMRS ports 0, 1, 6, 7 correspond to CDM group 0.
Referring to table 3, table 3 provides a mapping relationship between a TCI status and a DMRS port according to an embodiment of the present invention.
Table 3: antenna port(s) (1000 + DMRS port), dmrs-Type =1, maxLength =1
Figure GDA0003838493490000081
Figure GDA0003838493490000091
Wherein: antenna port(s), DMrs-Type DMRS configuration Type, maxLength longest length
Specifically, a DMRS port indication table of DCI in Rel-15 is enhanced, so that the mapping relation between the TCI state and the DMRS port can be indicated.
Referring to table 4, table 4 provides a mapping relationship between a TCI status and a DMRS port according to an embodiment of the present invention.
Table 4: antenna port(s) (1000 + DMRS port), dmrs-Type =2, maxLength =1
Figure GDA0003838493490000092
Figure GDA0003838493490000101
Specifically, a DMRS port indication table of DCI in Rel-15 is enhanced, so that the mapping relation between the TCI state and the DMRS port can be indicated.
As shown in tables 3 and 4, the correspondence between one or more TCI statuses in the mapping relationship between the TCI statuses and the DMRS ports may be agreed in advance, for example, may be agreed by a protocol or a standard. Because the mapping relation is between the pre-agreed TCI state and the DMRS port, the mapping relation is default and can be universally applied without being issued by a network side.
Referring to table 5, table 5 illustrates a DMRS port according to an embodiment of the present invention
Table 5: antenna port(s) (1000 + DMRS port), dmrs-Type =1, maxLength =1
Figure GDA0003838493490000111
In the embodiment of the present invention, optionally, the high-layer parameter configuration information includes: x TCI state groups are configured, each TCI state group is associated with a specified parameter, wherein X is a positive integer greater than or equal to 1.
Optionally, each TCI state group includes at least one TCI state.
Optionally, when the RRC configures the 128 candidate TCI state lists of the PDSCH, the candidate TCI states are divided into X groups, and each group corresponds to 1 TRP. The purpose of associating each TCI status group with a specific parameter is to make the terminal know which transmitted PDSCH of TRP the TCI status applies to when receiving the TCI status ID associated with the specific parameter.
The specified parameters are associated with the DMRS CDM group or DMRS port: since the specified parameter is associated with the TRP, which is in turn associated with the corresponding DMRS CDM group or DMRS port, the TCI status corresponds to the DMRS CDM group or DMRS port, and further, when the terminal receives the TCI status, it is known to which transmitted PDSCH of the TRP the TCI status applies to receive.
For example: when the RRC configures 128 candidate TCI state tables of the PDSCH, the candidate TCI states are divided into two groups, and each group corresponds to 1 PDSCH transmitted by TRP.
When configured in RRC, 64 TCI states are associated with the first parameter, which indicates that the 64 TCI states belong to PDSCH of TRP1, and the other 64 TCI states are associated with the second parameter, which indicates that the 64 TCI states belong to PDSCH of TRP 2. Therefore, when the terminal receives the TCI status ID associated with the first parameter, it knows that the TCI status should be applied to receive the PDSCH of TRP1 through the "implicit" correspondence between the TRP and the DMRS CDM group or DMRS port, and when the terminal receives the TCI status ID associated with the second parameter, it knows that the TCI status should be applied to receive the PDSCH of TRP 2.
Referring to fig. 3, fig. 2 is a flowchart illustrating a method for configuring a mapping relationship between a TCI state and a DMRS according to an embodiment of the present invention, which is applied to a network side, and includes the following specific steps:
step 301: and sending downlink control information or high-level parameter configuration information, wherein the downlink control information or the high-level parameter configuration information is used for the terminal to determine the corresponding relation between the N TCI states and the M DMRS CDM groups or the Y DMRS ports, and N, M and Y are positive integers which are more than or equal to 1.
In this embodiment of the present invention, optionally, the downlink control information includes: the mapping relation between the TCI state and the DMRS CDM group is indicated semi-statically or dynamically in RRC/MAC CE/DCI or the mapping relation between the TCI state and the DMRS port is indicated in a DMRS port indication table.
Optionally, the high layer parameter configuration information includes: in RRC, a plurality of TCI state groups are configured, each TCI state group is associated with a designated parameter, the designated parameter is associated with a CDM group or a DMRS port through TRP, and the corresponding relation between each TCI state and the CDM group or the DMRS port can be further known.
Through the steps of the embodiment, the network side sends the downlink control information or the high-layer parameter configuration information to the terminal, and when the terminal receives the information, the terminal can determine the corresponding relationship between the N TCI states and the M DMRS CDM groups or the Y DMRS ports, and further can determine the corresponding relationship between the N TCI states and the PDSCH sent by different TRPs.
In this embodiment of the present invention, optionally, the sending the downlink control information includes: mapping relation between TCI state and DMRS CDM group; the first TCI state corresponds to the group number of a DMRS CDM group, and the group number of the DMRS CDM group corresponding to the second TCI state is smaller than the group number of the DMRS CDM group corresponding to the first TCI state; or the first TCI state corresponds to the group number of a DMRS CDM group, and is greater than the group number of the DMRS CDM group corresponding to the second TCI state.
The mapping relation between the TCI state and the DMRS CDM group is the corresponding relation between one or more TCI states and the DMRS CDM group. The corresponding relationship of the one or more TCI states to the DMRS CDM group may be indicated in RRC/MAC CE/DCI with W bits.
Specifically, DMRS configuration type 1: the mapping relation between the TCI state and the DMRS CDM group is indicated by 1 bit in RRC/MAC CE/DCI: 0 indicates that the first TCI state 0 corresponds to DMRS CDM group 0 and the second TCI state 1 corresponds to DMRS CDM group 1;1 indicates that the first TCI state 0 corresponds to DMRS CDM group 1 and the second TCI state 1 corresponds to DMRS CDM group 0.
Or, DMRS configuration type 2: and 3 bits are used in RRC/MAC CE/DCI to indicate the mapping relation between the TCI state and the DMRS CDM group. For example: 000 indicates that the first TCI state 0 corresponds to DMRS CDM group 0 or the first TCI state 0 corresponds to DMRS CDM group 1 and the second TCI state 1 corresponds to DMRS CDM group 2;001 indicates that the first TCI state 0 corresponds to DMRS CDM group 0, the second TCI state 1 corresponds to DMRS CDM group 1 or the second TCI state 0 corresponds to DMRS CDM group 2.
It should be noted that the specific mapping relationship between the TCI status and the DMRS CDM group is not limited to the example, but all the correspondence relationships between the TCI status and the DMRS CDM group obtained by the steps of the method for configuring the TCI status and the DMRS mapping relationship of the present invention are within the scope of the present invention.
In this embodiment of the present invention, optionally, the sending the downlink control information includes:
mapping relation between TCI state and DMRS port; wherein the CDM group number of the DMRS port corresponding to the first TCI state is smaller than the CDM group number of the DMRS port corresponding to the second TCI state; or the CDM group number of the DMRS port corresponding to the first TCI state is greater than the CDM group number of the DMRS port corresponding to the second TCI state.
Optionally, the mapping relationship between the TCI status and the DMRS CDM port is: the DMRS port number corresponds to a CDM group number, each CDM group comprises one or more ports, one or two with the smallest group number in the CDM group corresponding to the DMRS port corresponding to the first TCI state, or one or two with the largest group number in the CDM group corresponding to the DMRS port corresponding to the first TCI state.
For example: for DMRS type 1, the first TCI state corresponds to DMRS ports 0, 1, 4 and 5, and DMRS ports 0, 1, 4 and 5 correspond to CDM group 0; the second TCI state corresponds to DMRS ports 2, 3, 6, 7 and DMRS ports 2, 3, 6, 7 correspond to CDM group 1;
for DMRS type 2, the first TCI state corresponds to DMRS ports 0, 1, 6 and 7, and the DMRS ports 0, 1, 6 and 7 correspond to CDM group 0; the second TCI state corresponds to DMRS ports 2, 3, 8, 9 or DMRS ports 4, 5, 10, 11 and DMRS ports 2, 3, 8, 9 correspond to CDM group 1 and DMRS ports 4, 5, 10, 11 correspond to CDM group 2;
or, the first TCI state corresponds to DMRS port 2, 3, 8, 9 or DMRS port 4, 5, 10, 11 and DMRS port 2, 3, 8, 9 corresponds to CDM group 1, DMRS port 4, 5, 10, 11 corresponds to CDM group 2; the second TCI state corresponds to DMRS ports 0, 1, 6, 7 and DMRS ports 0, 1, 6, 7 correspond to CDM group 0.
Optionally, the mapping relationship between the TCI status and the DMRS port is as follows: for DMRS types 1 and 2, a DMRS port indication table of DCI in Rel-15 may be enhanced to indicate a mapping relationship between a TCI status and a DMRS port.
In this embodiment of the present invention, optionally, the sending the high layer parameter configuration information includes: x TCI state groups are configured, each TCI state group is associated with a specified parameter, wherein X is a positive integer greater than or equal to 1.
Optionally, each TCI state group includes at least one TCI state
Optionally, when the RRC configures the 128 candidate TCI state lists of the PDSCH, the candidate TCI states are divided into X groups, and each group corresponds to 1 TRP. The purpose of associating each TCI status group with a specific parameter is to make the terminal know which transmitted PDSCH of TRP the TCI status applies to when receiving the TCI status ID associated with the specific parameter.
The specified parameters are associated with the DMRS CDM group or DMRS port: since the specified parameter is associated with the TRP, which is in turn associated with the corresponding DMRS CDM group or DMRS port, the TCI status corresponds to the DMRS CDM group or DMRS port, and further, when the terminal receives the TCI status, it is known to which transmitted PDSCH of the TRP the TCI status applies to receive.
For example: when the RRC configures 128 candidate TCI state tables of the PDSCH, the candidate TCI states are divided into two groups, and each group corresponds to 1 PDSCH transmitted by TRP.
When configured in RRC, 64 TCI states are associated with the first parameter, which indicates that the 64 TCI states belong to PDSCH of TRP1, and the other 64 TCI states are associated with the second parameter, which indicates that the 64 TCI states belong to PDSCH of TRP 2. Therefore, when the terminal receives the TCI status ID associated with the first parameter, it knows that the TCI status should be applied to receive the PDSCH of TRP1 through the "implicit" correspondence between the TRP and the DMRS CDM group or DMRS port, and when the terminal receives the TCI status ID associated with the second parameter, it knows that the TCI status should be applied to receive the PDSCH of TRP 2.
Referring to fig. 4A and 4B, schematic structural diagrams of a terminal provided in an embodiment of the present invention are shown. The terminal shown with reference to fig. 4A includes a transceiver 410 and a processor 420.
The transceiver 410 is configured to receive downlink control information or high-level parameter configuration information;
the processor 420 is configured to determine, according to the received downlink control information or the received high-level parameter configuration information, a correspondence between the N TCI states and the M DMRS CDM groups or the Y DMRS ports, where N, M and Y are positive integers greater than or equal to 1.
Optionally, the downlink control information includes: mapping relation between TCI state and DMRS CDM group;
wherein, the first TCI state corresponds to the group number of the DMRS CDM group, which is smaller than the group number of the DMRS CDM group corresponding to the second TCI state;
or, the first TCI state corresponds to a group number of a DMRS CDM group, which is greater than a group number of a DMRS CDM group corresponding to the second TCI state.
Optionally, the downlink control information includes: mapping relation between TCI state and DMRS port; wherein the CDM group number of the DMRS port corresponding to the first TCI state is smaller than the CDM group number of the DMRS port corresponding to the second TCI state;
or the CDM group number of the DMRS port corresponding to the first TCI state is greater than the CDM group number of the DMRS port corresponding to the second TCI state.
Optionally, the high-layer parameter configuration information includes: x TCI state groups are configured, each TCI state group is associated with a specified parameter, wherein X is a positive integer greater than or equal to 1.
The terminal shown in fig. 4B includes a transceiving module 411 and a processing module 421.
The transceiver module 411 is configured to receive downlink control information or high-level parameter configuration information;
the determining module 421 is configured to determine, according to the received downlink control information or high-level parameter configuration information, a corresponding relationship between N TCI states and M DMRS CDM groups or Y DMRS ports, where N, M and Y are positive integers greater than or equal to 1.
Optionally, the downlink control information includes: mapping relation between TCI state and DMRS CDM group;
wherein, the first TCI state corresponds to the group number of the DMRS CDM group, which is smaller than the group number of the DMRS CDM group corresponding to the second TCI state;
or, the first TCI state corresponds to a group number of a DMRS CDM group, which is greater than a group number of a DMRS CDM group corresponding to the second TCI state.
Optionally, the downlink control information includes: mapping relation between TCI state and DMRS port; wherein the CDM group number of the DMRS port corresponding to the first TCI state is smaller than the CDM group number of the DMRS port corresponding to the second TCI state;
or the CDM group number of the DMRS port corresponding to the first TCI state is greater than the CDM group number of the DMRS port corresponding to the second TCI state.
Optionally, the high-layer parameter configuration information includes: x TCI state groups are configured, each TCI state group is associated with a specified parameter, wherein X is a positive integer greater than or equal to 1.
The terminal provided by the embodiment of the present invention can implement each process implemented by the terminal in the above method embodiments, and is not described herein again to avoid repetition.
Fig. 5A and fig. 5B are schematic structural diagrams of a network-side device according to an embodiment of the present invention.
The network side shown with reference to fig. 5A includes a transceiver 510 and a processor 520.
The transceiver 510 is configured to send downlink control information or higher-layer parameter configuration information, where the downlink control information or higher-layer parameter configuration information is used by a terminal to determine a correspondence between N TCI states and M DMRS CDM groups or Y DMRS ports, where N, M and Y are positive integers greater than or equal to 1.
Optionally, the downlink control information includes: mapping relation of TCI state and DMRS CDM group;
the first TCI state corresponds to the group number of a DMRS CDM group, and the group number of the DMRS CDM group corresponding to the second TCI state is smaller than the group number of the DMRS CDM group corresponding to the first TCI state;
or, the first TCI state corresponds to a group number of a DMRS CDM group, which is greater than a group number of a DMRS CDM group corresponding to the second TCI state.
Optionally, the downlink control information includes: mapping relation between TCI state and DMRS port; wherein the CDM group number of the DMRS port corresponding to the first TCI state is smaller than the CDM group number of the DMRS port corresponding to the second TCI state;
or the CDM group number of the DMRS port corresponding to the first TCI state is greater than the CDM group number of the DMRS port corresponding to the second TCI state.
Optionally, the high-layer parameter configuration information includes: x TCI state groups are configured, each TCI state group is associated with a specified parameter, wherein X is a positive integer greater than or equal to 1.
The network side device shown in fig. 5B includes a transceiver module 511 and a processing module 521.
The transceiver module 511 is configured to send downlink control information or high-level parameter configuration information, where the downlink control information or the high-level parameter configuration information is used by the terminal to determine a correspondence relationship between N TCI states and M DMRS CDM groups or Y DMRS ports, where N, M and Y are positive integers greater than or equal to 1.
Optionally, the downlink control information includes: mapping relation of TCI state and DMRS CDM group;
wherein, the first TCI state corresponds to the group number of the DMRS CDM group, which is smaller than the group number of the DMRS CDM group corresponding to the second TCI state;
or, the first TCI state corresponds to a group number of a DMRS CDM group, which is greater than a group number of a DMRS CDM group corresponding to the second TCI state.
Optionally, the downlink control information includes: mapping relation between TCI state and DMRS port; wherein the CDM group number of the DMRS port corresponding to the first TCI state is smaller than the CDM group number of the DMRS port corresponding to the second TCI state;
or the CDM group number of the DMRS port corresponding to the first TCI state is greater than the CDM group number of the DMRS port corresponding to the second TCI state.
Optionally, the high-layer parameter configuration information includes: x TCI state groups are configured, each TCI state group is associated with a specified parameter, wherein X is a positive integer greater than or equal to 1.
The network side device provided by the embodiment of the present invention can implement each process implemented by the network side in the above method embodiments, and is not described here again to avoid repetition.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a terminal according to another embodiment of the present invention, where the network side device 6 includes: a processor 610 and a memory 620. In the embodiment of the present invention, the terminal further includes: a computer program stored on the memory 620 and executable on the processor 610, the computer program when executed by the processor 910 implementing the steps of:
receiving downlink control information or high-level parameter configuration information;
and determining the corresponding relation between the N TCI states and M DMRS CDM groups or Y DMRS ports according to the received downlink control information or high-level parameter configuration information, wherein N, M and Y are positive integers which are more than or equal to 1.
Optionally, the computer program when executed by the processor 910 further implements the steps of:
optionally, the downlink control information includes: mapping relation between TCI state and DMRS CDM group;
wherein, the first TCI state corresponds to the group number of the DMRS CDM group, which is smaller than the group number of the DMRS CDM group corresponding to the second TCI state;
or the first TCI state corresponds to the group number of a DMRS CDM group, and is greater than the group number of the DMRS CDM group corresponding to the second TCI state.
Optionally, the downlink control information includes: mapping relation between TCI state and DMRS port; wherein the CDM group number of the DMRS port corresponding to the first TCI state is smaller than the CDM group number of the DMRS port corresponding to the second TCI state;
or the CDM group number of the DMRS port corresponding to the first TCI state is greater than the CDM group number of the DMRS port corresponding to the second TCI state.
Optionally, the high-layer parameter configuration information includes: x TCI state groups are configured, each TCI state group is associated with a specified parameter, wherein X is a positive integer greater than or equal to 1.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a network-side device according to another embodiment of the present invention, where the network-side device 7 includes: a processor 710 and a memory 720. In the embodiment of the present invention, the terminal further includes: a computer program stored on the memory 720 and executable on the processor 710, the computer program when executed by the processor 710 performing the steps of:
and sending downlink control information or high-level parameter configuration information, wherein the downlink control information or the high-level parameter configuration information is used for the terminal to determine the corresponding relation between the N TCI states and the M DMRS CDM groups or the Y DMRS ports, and N, M and Y are positive integers which are more than or equal to 1.
Optionally, the computer program when executed by the processor 710 may further implement the steps of:
optionally, the downlink control information includes: mapping relation between TCI state and DMRS CDM group;
wherein, the first TCI state corresponds to the group number of the DMRS CDM group, which is smaller than the group number of the DMRS CDM group corresponding to the second TCI state;
or, the first TCI state corresponds to a group number of a DMRS CDM group, which is greater than a group number of a DMRS CDM group corresponding to the second TCI state.
Optionally, the downlink control information includes: mapping relation between TCI state and DMRS port; wherein the CDM group number of the DMRS port corresponding to the first TCI state is smaller than the CDM group number of the DMRS port corresponding to the second TCI state;
or the CDM group number of the DMRS port corresponding to the first TCI state is greater than the CDM group number of the DMRS port corresponding to the second TCI state.
Optionally, the high-layer parameter configuration information includes: x TCI state groups are configured, each TCI state group is associated with a specified parameter, wherein X is a positive integer greater than or equal to 1.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the foregoing method for determining a mapping relationship between a TCI state and a DMRS, or when the computer program is executed by a processor, the computer program implements each process of the foregoing method for configuring a mapping relationship between a TCI state and a DMRS, and can achieve the same technical effect, and in order to avoid repetition, details are not described here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (9)

1. A method for determining a mapping relation between a Transmission Configuration Indication (TCI) state and a demodulation reference signal (DMRS) is applied to a terminal, and is characterized by comprising the following steps:
receiving high-level parameter configuration information;
determining the corresponding relation between N TCI states and M DMRS Code Division Multiplexing (CDM) groups or Y DMRS ports according to the received high-level parameter configuration information, wherein N, M and Y are positive integers which are more than or equal to 1;
wherein the high-layer parameter configuration information includes:
configuring X TCI state groups, wherein each TCI state group is associated with a specified parameter, and X is a positive integer greater than or equal to 1; each TCI state group at least comprises one TCI state; the specified parameters are associated with the DMRS CDM group or DMRS port.
2. A configuration method of mapping relation between TCI state and DMRS is applied to a network side, and is characterized by comprising the following steps:
sending high-layer parameter configuration information, wherein the high-layer parameter configuration information is used for a terminal to determine the corresponding relation between N TCI states and M DMRS CDM groups or Y DMRS ports, and N, M and Y are positive integers which are more than or equal to 1;
wherein the high-layer parameter configuration information includes:
configuring X TCI state groups, wherein each TCI state group is associated with a specified parameter, and X is a positive integer greater than or equal to 1; each TCI state group at least comprises one TCI state; the specified parameters are associated with the DMRS CDM group or DMRS port.
3. A terminal, comprising: a transceiver and a processor;
the transceiver is used for receiving high-level parameter configuration information;
the processor is used for determining the corresponding relation between the N TCI states and the M DMRS CDM groups or the Y DMRS ports, wherein N, M and Y are positive integers which are more than or equal to 1;
wherein the high-layer parameter configuration information includes:
configuring X TCI state groups, wherein each TCI state group is associated with a specified parameter, and X is a positive integer greater than or equal to 1; each TCI state group at least comprises one TCI state; the specified parameters are associated with the DMRS CDM group or DMRS port.
4. A terminal, comprising:
the receiving and sending module is used for receiving high-level parameter configuration information;
the processing module is used for determining the corresponding relation between the N TCI states and the M DMRS CDM groups or the Y DMRS ports, wherein N, M and Y are positive integers which are more than or equal to 1;
wherein the high-layer parameter configuration information includes:
configuring X TCI state groups, wherein each TCI state group is associated with a specified parameter, and X is a positive integer greater than or equal to 1; each TCI state group at least comprises one TCI state; the specified parameters are associated with the DMRS CDM group or DMRS port.
5. A network-side device, comprising: a transceiver and a processor;
the transceiver is used for sending high-level parameter configuration information, and the high-level parameter configuration information is used for a terminal to determine the corresponding relation between N TCI states and M DMRS CDM groups or Y DMRS ports, wherein N, M and Y are positive integers greater than or equal to 1;
wherein the high-layer parameter configuration information includes:
configuring X TCI state groups, wherein each TCI state group is associated with a specified parameter, and X is a positive integer greater than or equal to 1; each TCI state group at least comprises one TCI state; the specified parameters are associated with the DMRS CDM group or DMRS port.
6. A network-side device, comprising:
the terminal comprises a transceiver module and a transceiver module, wherein the transceiver module is used for sending high-level parameter configuration information, and the high-level parameter configuration information is used for determining the corresponding relation between N TCI states and M DMRS CDM groups or Y DMRS ports by the terminal, wherein N, M and Y are positive integers which are more than or equal to 1;
wherein the high-layer parameter configuration information includes:
configuring X TCI state groups, wherein each TCI state group is associated with a specified parameter, and X is a positive integer greater than or equal to 1; each TCI state group at least comprises one TCI state; the specified parameters are associated with the DMRS CDM group or DMRS port.
7. A terminal, comprising: a processor, a memory and a processing program stored on the memory and operable on the processor for a method of determination of TCI status and mapping, which when executed performs the method steps of determination of TCI status and DMRS mapping as claimed in claim 1.
8. A network-side device, comprising: a processor, a memory and a configuration method handler of the TCI status and DMRS mapping stored on the memory and operable on the processor, the processor implementing the configuration method steps of the TCI status and DMRS mapping as claimed in claim 2 when executed.
9. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for determining a mapping of TCI states to DMRS as claimed in claim 1, or which, when being executed by a processor, carries out the steps of the method for configuring a mapping of TCI states to DMRS as claimed in claim 2.
CN201910927902.2A 2019-09-27 2019-09-27 Method and equipment for determining and configuring mapping relation between TCI state and DMRS (demodulation reference signal) Active CN112583547B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201910927902.2A CN112583547B (en) 2019-09-27 2019-09-27 Method and equipment for determining and configuring mapping relation between TCI state and DMRS (demodulation reference signal)
PCT/CN2020/114702 WO2021057505A1 (en) 2019-09-27 2020-09-11 Method and device for determining mapping relationship between tci state and dmrs, and method and device for configuring mapping relationship between tci state and dmrs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910927902.2A CN112583547B (en) 2019-09-27 2019-09-27 Method and equipment for determining and configuring mapping relation between TCI state and DMRS (demodulation reference signal)

Publications (2)

Publication Number Publication Date
CN112583547A CN112583547A (en) 2021-03-30
CN112583547B true CN112583547B (en) 2022-12-13

Family

ID=75110161

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910927902.2A Active CN112583547B (en) 2019-09-27 2019-09-27 Method and equipment for determining and configuring mapping relation between TCI state and DMRS (demodulation reference signal)

Country Status (2)

Country Link
CN (1) CN112583547B (en)
WO (1) WO2021057505A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115669158A (en) * 2022-09-02 2023-01-31 北京小米移动软件有限公司 Information indication method, device, equipment and storage medium
CN117729582A (en) * 2022-09-16 2024-03-19 中兴通讯股份有限公司 Transmission parameter determining method and device
WO2024092585A1 (en) * 2022-11-02 2024-05-10 北京小米移动软件有限公司 Communication method, apparatus and device, and storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109587793A (en) * 2017-09-29 2019-04-05 维沃移动通信有限公司 TCI state updating method, base station and terminal
CN110034853A (en) * 2018-01-12 2019-07-19 华为技术有限公司 Method for transmitting signals, relevant device and system
CN110167091A (en) * 2018-02-11 2019-08-23 维沃移动通信有限公司 Method of reseptance, sending method, terminal and the base station of down channel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111557082B (en) * 2018-01-07 2023-06-23 Lg电子株式会社 Method and device for receiving and transmitting PT-RS between terminal base stations in wireless communication system
US11569954B2 (en) * 2018-06-14 2023-01-31 Apple Inc. Demodulation reference signal and phase-tracking reference signal port indication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109587793A (en) * 2017-09-29 2019-04-05 维沃移动通信有限公司 TCI state updating method, base station and terminal
CN110034853A (en) * 2018-01-12 2019-07-19 华为技术有限公司 Method for transmitting signals, relevant device and system
CN110167091A (en) * 2018-02-11 2019-08-23 维沃移动通信有限公司 Method of reseptance, sending method, terminal and the base station of down channel

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Discussion on DMRS port indication for NCJT;LG Electronics;《3GPP TSG RAN WG1#96bis R1-1904214 Xi an, China,》;20190412;第1页 *
Discussion on DMRS port indication for NCJT;LG Electronics;《3GPP TSG RAN WG1#97 R1-1906738 Reno,USA》;20190517;第1-2页 *
Enhancements on multi-TRP/panel transmission;LG Electronics;《3GPP TSG RAN WG1 Meeting#97 R1-1906730 Reno,USA》;20190517;第3页 *
On multi-TRP/panel transmission;CATT;《3GPP TSG RAN WG1 Meeting#97 R1-1906345 Reno,USA》;20190517;第4-5页 *

Also Published As

Publication number Publication date
WO2021057505A1 (en) 2021-04-01
CN112583547A (en) 2021-03-30

Similar Documents

Publication Publication Date Title
US10382969B2 (en) Resource allocation design for low cost machine-type communication UE
CN108401303B (en) Terminal, network device and communication method
EP3512112A1 (en) Method and apparatus for use in data transmission
EP3592088B1 (en) Channel transmission method and network device
CN111769918B (en) DMRS port indication method and device
CN112583547B (en) Method and equipment for determining and configuring mapping relation between TCI state and DMRS (demodulation reference signal)
EP3537784A1 (en) Method for detecting synchronization signal block, and method, apparatus and system for transmitting synchronization signal block
WO2018202098A1 (en) Method of wireless communication, network device and terminal device
JP2013524646A (en) Physical downlink shared channel mute in cell-specific reference symbol location for non-serving cells
WO2018036451A1 (en) Method and apparatus for configuring wireless resource allocation information
CN109891812B (en) Method, node and wireless device for measuring channel state information reference signal
CN113747497B (en) Interference suppression combining method, resource indicating method and communication device
US10756861B2 (en) Communication method, and related device and system
CN108604950B (en) Data transmission method and device
CN111601382B (en) Data transmission method and communication device
EP3618553A1 (en) Method, device and system for resource allocation, and computer-readable storage medium
CN112702155B (en) Method and apparatus for indicating control channel
WO2021013159A1 (en) Channel state information transmission method and device
EP3930242A1 (en) Method and apparatus for interference randomization
CN109275190A (en) A kind of communication means and device
US20220312441A1 (en) Reference signal transmission method, apparatus, and system
CN108282310B (en) Data transmission method, network side equipment and terminal equipment
CN115299007A (en) Method and device for determining TCI state use time of transmission configuration indication
US20200169947A1 (en) Communication Method And Communications Apparatus
WO2022067678A1 (en) Signal processing method and apparatus

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant