CN116326056A

CN116326056A - Communication method and device

Info

Publication number: CN116326056A
Application number: CN202080106002.2A
Authority: CN
Inventors: 李君瑶; 黎超; 张莉莉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2023-06-23
Also published as: WO2022077403A1

Abstract

The application provides a communication method and a communication device, which enable a terminal device to cancel DMRS transmission after a first time domain position on a first time unit when uplink transmission of the first time domain position is canceled according to an indication of first information; or, cancel DMRS transmission after the first time domain position on the first time unit, and send the first DMRS according to the first pattern on the second time unit according to the first information; or, the second DMRS is sent according to the second pattern in the third time unit according to the first information, so that flexibility of a processing mode when uplink transmission at the first time domain position is cancelled is improved.

Description

Communication method and device

Technical Field

The present disclosure relates to the field of wireless communications technologies, and in particular, to a communication method and apparatus.

Background

In the current mobile communication technology, uplink transmission of a terminal equipment (UE) may be canceled in some cases. For example, when the UE receives the uplink cancellation indication (uplink cancellation indication, UL CI), the UE starts from the first symbol where the UL CI indicated resource overlaps with the uplink transmission, cancels the uplink transmission on the subsequent symbol, and does not resume the uplink transmission. For another example, when the network device (e.g., the base station) schedules the high priority uplink transmission, if there is an overlap between the high priority uplink transmission and the low priority uplink transmission resource of the UE, the UE cancels the low priority uplink transmission and does not resume the low priority uplink transmission until the last symbol where the low priority uplink transmission resource overlaps with the high priority uplink transmission resource. For another example, when higher layer downlink information or downlink data needs to be transmitted, uplink transmission is also interrupted.

Therefore, when the uplink transmission is canceled by the UL CI or higher priority transmission, the canceled uplink transmission is not resumed, and the flexibility of the transmission scheme is insufficient, and improvement is desired.

Disclosure of Invention

The application provides a communication method for improving the flexibility of a transmission mode in a scene where uplink transmission is canceled.

In a first aspect, embodiments of the present application provide a communication method that may be performed by a terminal device or a component in a terminal device (such as a processor, a communication chip or chip system, etc.).

The following describes an example in which an execution subject is a terminal device. According to the method, a terminal device receives first information, wherein the first information is used for indicating to cancel uplink transmission of a first time domain position, and the uplink transmission comprises transmission of a DMRS and/or data; the first time domain position has an overlap (overlap) with a first time unit, and the time domain position of a first DMRS in the first time unit is determined according to a first pattern. The first information is also used to indicate one of: canceling the first DMRS transmission after the first time domain position in the first time unit; or, cancelling the first DMRS transmission after the first time domain position in the first time unit, and transmitting the first DMRS according to a first pattern in a second time unit after the first time domain position, wherein the length of the second time unit is the same as that of the first time unit; or, transmitting the second DMRS according to a second pattern by a third time unit after the first time domain position, where the first time unit includes the third time unit.

The terminal equipment can cancel the DMRS transmission after the first time domain position on the first time unit according to the first information; or, cancel DMRS transmission after the first time domain position on the first time unit, and send the first DMRS according to the first pattern on the second time unit according to the first information; or sending the second DMRS according to the second pattern in the third time unit according to the first information.

By adopting the method, the terminal equipment can cancel the DMRS transmission after the first time domain position on the first time unit when the uplink transmission of the first time domain position is canceled according to the indication of the first information; or, cancel DMRS transmission after the first time domain position on the first time unit, and send the first DMRS according to the first pattern on the second time unit according to the first information; or, the second DMRS is sent according to the second pattern in the third time unit according to the first information, so that flexibility of a processing mode when uplink transmission at the first time domain position is cancelled is improved.

In one possible example, the first time unit includes K consecutive fourth time units, the first pattern indicates that the first DMRS occupies a center time unit of the K second time units, K being a positive integer; alternatively, (pattern 2) the first time unit includes K fourth time units, the first pattern indicating that the first DMRS occupies a first fourth time unit and a kth fourth time unit of the K fourth time units, K being a positive integer; alternatively, (pattern 3) the first time unit includes N consecutive fifth time units, each fifth time unit includes K fourth time units, and the number of consecutive fourth time units included in the first time unit is M, m=k×n+1, the first pattern indicates that the first DMRS occupies the 1 st, k+1 st, 2k+1 …, and nk+1 th fourth time units in the M fourth time units, M, N, K, and N are positive integers, N is less than or equal to N; alternatively, the first time unit (pattern 4) includes N fifth time units, each fifth time unit includes K consecutive fourth time units, and the first pattern indicates that the first DMRS occupies the 1 st fourth time unit in each fifth time unit, and K is a positive integer. By adopting the design, the first pattern can be designed according to various modes, so that the scheduling flexibility is improved, in addition, the cost of the DMRS can be saved by the design of part of the fourth time units in which the DMRS is distributed in the first time units, and the spectrum efficiency is improved. Further, for the first pattern shown above, when the transmission of the first DMRS in the first pattern is cancelled, the second time unit or the third time unit after the first time domain position of the terminal device may be caused to resume the transmission of the DMRS, so that the base station side performs channel estimation and decoding according to the DMRS that resumes the transmission, and therefore uplink transmission is resumed.

In one possible example, the second pattern indicates that the second DMRS occupies each fourth time element of the third time elements, the third time elements including at least one fourth time element; alternatively, the third time unit includes K- (i+1) fourth time units, i is an index of a last fourth time unit in the first time domain position, and the second pattern is used to indicate that the second DMRS occupies at least one of the first fourth time unit, the central fourth time unit, and the last fourth time unit in the K- (i+1) fourth time units. By adopting the design, the second pattern can be designed according to various modes, and the flexibility of the processing mode when the uplink transmission at the first time domain position is canceled is further improved.

In one possible design, the terminal device may further receive second information, which may include at least one of indication information of the first pattern, a value of K, a value of N, a value of M, or indication information of RV of the first slot in the first time unit. With this design, an indication of the first time unit can be achieved.

In one possible design, the first time unit may include a plurality of time slots, and the terminal device may determine the RV of the first time slot after the first time domain location based on the RV of the last time slot before the first time domain location. With this design, RV continuity of the transmissions actually received by the network device can be ensured, implementing incremental redundancy hybrid automatic repeat request (hybrid automatic repeat request, HARQ).

In one possible design, the terminal device may receive third information indicating that the RV of the first time slot after the first time domain location is determined from the RV of the last time slot before the first time domain location. By adopting the design, the network equipment can realize the control of the RV determination mode.

In one possible design, the terminal device may receive fourth information indicating time domain locations of a plurality of consecutive first time units, each first time unit comprising a plurality of fourth time units; the RV of the fourth time unit for each of the plurality of consecutive first time units is independently determined. By adopting the design, RV continuity of the transmission actually received by the network equipment can be ensured, and incremental redundancy HARQ is realized.

In one possible design, the terminal device may receive fifth information indicating that an RV of a fourth time unit of each of the plurality of consecutive first time units is independently determined. By adopting the design, the network equipment can realize the control of the RV determination mode.

In one possible design, the first information may be carried on DCI, which is terminal device specific control information or cell specific control information or group common control information, or an RRC message.

In a second aspect, embodiments of the present application provide a communication method that may be performed by a network device or a component in a network device (e.g., a processor, a communication chip or chip system, etc.). Such as a base station.

The following describes an example in which the execution body is a network device. According to the method, the network device may send first information, which may be referred to the description in the first aspect. The network device may also cancel receiving the DMRS after the first time domain location on the first time unit based on the first information; or, receiving the first DMRS transmitted according to the first pattern in a second time unit according to the first information, or receiving the second DMRS transmitted according to the second pattern in the third time unit according to the first information.

In one possible design, the first pattern and/or the second pattern may be referred to in the description of the first aspect.

In one possible design, the network device may send at least one of the second information, the third information, the fourth information, or the fifth information. The above second information, third information, fourth information, and fifth information may be referred to the description in the first aspect.

The advantages of the above second aspect and possible designs may be referred to the advantages of the first aspect and possible designs thereof.

In a third aspect, embodiments of the present application provide a communication method that may be performed by a terminal device or a component in a terminal device (such as a processor, a communication chip or chip system, etc.).

The following describes an example in which an execution subject is a terminal device. According to the method, the terminal equipment can receive first information, wherein the first information is used for indicating to cancel uplink transmission at a first time domain position, and the uplink transmission comprises transmission of the DMRS and/or data; the first time domain position has an overlap (overlap) with a first time unit, and the time domain position of a first DMRS in the first time unit is determined according to a first pattern.

The terminal device may perform, according to the sixth information: canceling transmission of the first DMRS at a first time domain location and canceling transmission of the first DMRS after the first time domain location in the first time unit; or, cancelling transmission of the first DMRS at a first time domain position and cancelling transmission of the first DMRS after the first time domain position in the first time unit, and transmitting the first DMRS according to a first pattern by a second time unit after the first time domain position, wherein the length of the second time unit is the same as that of the first time unit; or, cancel transmission of the first DMRS at a first time domain location, and transmit a second DMRS in a second pattern for a third time unit subsequent to the first time domain location, the first time unit comprising the third time unit; or, transmitting the first DMRS according to the first pattern at the first time domain position.

Wherein the sixth information includes at least one of: the first information; or, referring to time domain position information of the time domain position in the first time unit; information of a time domain position where the first time domain position coincides with the first time unit; or, the indication information of the first pattern.

With the above method, the terminal device may cancel DMRS transmission after the first time domain position on the first time unit when uplink transmission of the first time domain position is canceled according to the sixth information, or cancel DMRS transmission after the first time domain position on the first time unit, and send the first DMRS according to the first pattern on the second time unit according to the first information, or send the second DMRS according to the second pattern on the third time unit according to the first information, thereby improving flexibility of a processing manner when uplink transmission of the first time domain position is canceled.

In one possible design, the sixth information includes the coincident time domain location information, and the coincident time domain location includes a first fourth time unit of the first time units, the first time unit including at least one fourth time unit. The terminal device may perform, according to the sixth information: canceling transmission of the first DMRS at a first time domain location and canceling transmission of the first DMRS after the first time domain location in the first time unit; or, cancelling transmission of the first DMRS at a first time domain position, cancelling transmission of the first DMRS after the first time domain position in the first time unit, and transmitting the first DMRS according to a first pattern by a second time unit after the first time domain position, wherein the length of the second time unit is the same as that of the first time unit.

In one possible design, the sixth information includes indication information of the first pattern and the coincident time domain location information, the first time unit includes K fourth time units, the first pattern indicates that the first DMRS occupies a central time unit of the K second time units, K is a positive integer, and the coincident time domain location includes a fourth time unit in which at least one first DMRS of the first time units is located, and does not include a kth fourth time unit of the first time units. The terminal device performs according to the sixth information: and transmitting the second DMRS in a second pattern by a third time unit after the first time domain position, wherein the first time unit comprises the third time unit.

In one possible design, the sixth information includes indication information of the first pattern and the coincident time-domain position information, the first time unit includes K fourth time units, the first pattern indicates that the first DMRS occupies a first fourth time unit and a kth fourth time unit of the K fourth time units, K is a positive integer, and the coincident time-domain position does not include the kth fourth time unit; the terminal device may perform, according to the sixth information: and transmitting the second DMRS in a second pattern by a third time unit after the first time domain position, wherein the first time unit comprises the third time unit.

In one possible design, the sixth information includes indication information of the first pattern and the coincident time-domain position information, the first time unit includes N consecutive fifth time units, each fifth time unit includes K fourth time units, and the number of consecutive fourth time units included in the first time unit is M, m=k×n+1, the first pattern indicates that the first DMRS occupies 1 st, k+1, 2k+1 …, and nk+1 fourth time units in the M fourth time units, M, N, K, and N are positive integers, N is less than or equal to N, and the coincident time-domain position does not include the M fourth time units; the terminal device performs according to the sixth information: and transmitting the second DMRS in a second pattern by a third time unit after the first time domain position, wherein the first time unit comprises the third time unit.

In one possible design, the sixth information includes indication information of the first pattern, the first information, time domain position information of the reference time domain position, and the coincident time domain position information; a first fourth time unit in the coincident time domain positions is located after a fourth time unit in which the reference time domain position is located, and the coincident time domain positions do not include the fourth time unit in which at least one first DMRS in the first time units indicated by the first pattern is located, wherein the first information is cell-specific or group-common control information; the terminal device performs according to the sixth information: and transmitting the first DMRS according to the first pattern at the first time domain position.

In one possible design, the sixth information includes indication information of the first pattern and the coincident time domain position information; a first fourth time unit in the coincident time domain positions is located after the first fourth time unit in the first time units, and the coincident time domain positions comprise fourth time units in which at least one first DMRS in the first time units indicated by the first pattern is located, wherein the first information is cell-specific or group-common control information; the terminal device performs according to the sixth information: and transmitting the first DMRS according to the first pattern at the first time domain position.

In a fourth aspect, embodiments of the present application provide a communication method that may be performed by a network device or a component in a network device (e.g., a processor, a communication chip or chip system, etc.). Such as a base station.

The following describes an example in which the execution body is a network device. According to the method, the network device may send first information, where the first information is used to instruct cancellation of uplink transmission at the first time domain location, where the uplink transmission includes transmission of DMRS and/or data; the first time domain position has an overlap (overlap) with a first time unit, and the time domain position of a first DMRS in the first time unit is determined according to a first pattern. The network device performs according to the sixth information: cancel reception of the first DMRS at a first time domain location and cancel reception of the first DMRS after the first time domain location in the first time unit; or, cancel the reception of the first DMRS at a first time domain position and cancel the reception of the first DMRS after the first time domain position in the first time unit, and receive the first DMRS according to a first pattern in a second time unit after the first time domain position, where the length of the second time unit is the same as the first time unit; or, cancel the reception of the first DMRS at a first time domain location, and receive a second DMRS in a second pattern for a third time unit subsequent to the first time domain location, the first time unit comprising the third time unit; or, receiving the first DMRS according to the first pattern at the first time domain position;

The sixth information includes at least one of: the first information; or, referring to time domain position information of the time domain position in the first time unit; information of a time domain position where the first time domain position coincides with the first time unit; indication information of the first pattern.

In one possible design, the sixth information includes the coincident time domain location information, and the coincident time domain location includes a first fourth time unit of the first time units, the first time unit including at least one fourth time unit. The network device performs according to the sixth information: cancel reception of the first DMRS at a first time domain location and cancel reception of the first DMRS after the first time domain location in the first time unit; or, cancel the reception of the first DMRS at a first time domain position and cancel the reception of the first DMRS after the first time domain position in the first time unit, and receive the first DMRS according to a first pattern in the second time unit after the first time domain position.

In one possible design, the sixth information includes indication information of the first pattern and the coincident time domain location information, the first time unit includes K fourth time units, the first pattern indicates that the first DMRS occupies a central time unit of the K second time units, K is a positive integer, the coincident time domain location includes a fourth time unit in which at least one first DMRS of the first time units is located, and does not include a kth fourth time unit of the first time units; the network device performs according to the sixth information: canceling the reception of the first DMRS at a first time domain location, and the third time unit after the first time domain location receives the second DMRS in a second pattern.

In one possible design, the sixth information includes indication information of the first pattern and the coincident time-domain position information, the first time unit includes K fourth time units, the first pattern indicates that the first DMRS occupies a first fourth time unit and a kth fourth time unit of the K fourth time units, K is a positive integer, and the coincident time-domain position does not include the kth fourth time unit; the network device performs according to the sixth information: canceling the reception of the first DMRS at a first time domain location, and the third time unit after the first time domain location receives the second DMRS in a second pattern.

In one possible design, the sixth information includes indication information of the first pattern and the coincident time domain position information, the first time unit includes N consecutive fifth time units, each fifth time unit includes K fourth time units, and the number of consecutive fourth time units included in the first time unit is M, m=k×n+1, the first pattern indicates that the first DMRS occupies the 1 st, k+1, 2k+1 …, and nk+1 th fourth time units in the M fourth time units, M, N, K, and N are positive integers, N is less than or equal to N, and the coincident time domain position does not include the M fourth time units; the network device performs according to the sixth information: canceling the reception of the first DMRS at a first time domain location, and the third time unit after the first time domain location receives the second DMRS in a second pattern.

In one possible design, the sixth information includes indication information of the first pattern, the first information, time domain position information of the reference time domain position, and the coincident time domain position information; a first fourth time unit in the coincident time domain positions is located after a fourth time unit in which the reference time domain position is located, and the coincident time domain positions do not include the fourth time unit in which at least one first DMRS in the first time units indicated by the first pattern is located, wherein the first information is cell-specific or group-common control information; the network device performs according to the sixth information: and receiving the first DMRS according to the first pattern at the first time domain position.

In one possible design, the sixth information includes indication information of the first pattern and the coincident time domain position information; a first fourth time unit in the coincident time domain positions is located after the first fourth time unit in the first time units, and the coincident time domain positions comprise fourth time units in which at least one first DMRS in the first time units indicated by the first pattern is located, wherein the first information is cell-specific or group-common control information; the network device performs according to the sixth information: and receiving the first DMRS according to the first pattern at the first time domain position.

The advantages of the above fourth aspect and possible designs may be referred to the advantages of the third aspect and possible designs thereof.

In a fifth aspect, embodiments of the present application provide a communication method that may be performed by a terminal device or a component in a terminal device (such as a processor, a communication chip or chip system, etc.).

The following describes an example in which an execution subject is a terminal device. According to the method, the terminal device may receive second information comprising at least one of: indication information of a first pattern, where the first pattern is used for indicating a time domain position where a first DMRS in a first time unit is located; or, the value of K is used for indicating the number of the fourth time units in the first time unit or the number of the fourth time units in the fifth time unit; or, the value of N is used for indicating the number of the fifth time units in the first time units; or, when the first time unit includes N fifth time units, the value of M is used to indicate the number of fourth time units in the first time unit, and each fifth time unit includes K fourth time units; or, the indication information of the RV of the first time slot in the first time unit.

By adopting the method, the indication of the first time unit can be realized.

In one possible design, the terminal device may receive first information, where the first information is used to indicate to cancel transmission of an uplink DMRS transmission at the first time domain location, where the uplink transmission includes the DMRS and/or data; the terminal device may also receive third information indicating that the RV of the first time slot after the first time domain location is determined from the RV of the last time slot before the first time domain location. By adopting the design, RV continuity of the transmission actually received by the network equipment can be ensured, and incremental redundancy HARQ is realized.

In one possible design, the terminal device may receive fifth information indicating that an RV of a fourth time unit of each of the plurality of consecutive first time units is independently determined.

In one possible design, the second information is carried on DCI; alternatively, the second information is carried on an RRC message.

In a sixth aspect, embodiments of the present application provide a communication method that may be performed by a network device or a component in a network device (e.g., a processor, a communication chip or chip system, etc.). Such as a base station.

The following describes an example in which the execution body is a network device. According to the method, the network device may send the second information. The second information may be referred to the description in the fifth aspect.

In one possible design, the network device may also send the first information as well as the third information.

In one possible design, when the second information includes a value of N, and N is an integer greater than or equal to 2, the network device may further send fifth information, where the fifth information may be referred to as description in the fifth aspect. Alternatively, the network device may also transmit fourth information and fifth information. This fourth information may be referred to the description in the first aspect.

The advantages of the above sixth aspect and possible designs are referred to as the advantages of the fifth aspect and possible designs thereof.

In a seventh aspect, embodiments of the present application provide a communications apparatus, where the method implemented by the terminal device in the first aspect, the third aspect, the fifth aspect, or any possible design thereof may be implemented. The apparatus comprises corresponding units or means for performing the above-described methods. The units comprised by the device may be implemented in software and/or hardware. The apparatus may be, for example, a terminal device, or a component or baseband chip, a system-on-chip, a processor, or the like that may support implementation of the above method in a terminal device.

By way of example, the communication device may comprise modular components such as a transceiver unit (or communication module, transceiver module) and a processing unit (or processing module), which may perform the corresponding functions of the terminal device of the first aspect, the third aspect, the fifth aspect or any of the possible designs thereof. When the communication apparatus is a terminal device, the transceiver unit may be a transmitter and a receiver, or a transceiver obtained by integrating the transmitter and the receiver. The transceiver unit may include an antenna, a radio frequency circuit, etc., and the processing unit may be a processor, such as a baseband chip, etc. When the communication device is a component having the above-mentioned terminal equipment function, the transceiver unit may be a radio frequency unit, and the processing unit may be a processor. When the communication device is a chip system, the transceiver unit may be an input/output interface of the chip system, and the processing unit may be a processor of the chip system, for example: a central processing unit (central processing unit, CPU).

The transceiver unit may be configured to perform the actions of receiving and/or transmitting performed by the terminal device in the first aspect, the third aspect, the fifth aspect or any possible design thereof, such as the reception of the first information, the second information, etc., and/or the transmission of the DMRS. The processing unit may be configured to perform actions other than receiving and transmitting performed by the terminal device in the first aspect, the third aspect, the fifth aspect or any possible design thereof, such as receiving the first information from the transceiver unit and/or stopping transmission of the DMRS.

In an eighth aspect, embodiments of the present application provide a communications apparatus that can implement the method implemented by the first network device in the second aspect, the fourth aspect, the sixth aspect, or any possible design thereof. The apparatus comprises corresponding units or means for performing the above-described methods. The units comprised by the device may be implemented in software and/or hardware. The apparatus may be, for example, a network device, or a component or baseband chip, a system-on-chip, or a processor, etc. that may support implementation of the above method in a network device.

Illustratively, the communication apparatus may include modular components such as a transceiver unit (or communication module, transceiver module) and a processing unit (or processing module), which may perform the corresponding functions of the network device in the second aspect, the fourth aspect, the sixth aspect, or any of their possible designs. When the communication apparatus is a network device, the transceiver unit may be a transmitter and a receiver, or a transceiver obtained by integrating the transmitter and the receiver. The transceiver unit may include an antenna, a radio frequency circuit, etc., and the processing unit may be a processor, such as a baseband chip, etc. When the communication device is a component having the above-mentioned network equipment function, the transceiver unit may be a radio frequency unit, and the processing unit may be a processor. When the communication device is a chip system, the transceiver unit may be an input/output interface of the chip system, and the processing unit may be a processor of the chip system, for example: a central processing unit (central processing unit, CPU).

The transceiver unit may be configured to perform the actions of receiving and/or transmitting performed by the network device in the second aspect, the fourth aspect, the sixth aspect or any possible design thereof, such as the transmission of the first information, the second information, etc., and/or the reception of the DMRS. The processing unit may be configured to perform actions other than reception and transmission performed by the network device in the second aspect, the fourth aspect, the sixth aspect, or any possible design thereof, such as determining to stop reception of the DMRS according to the first information or the sixth information, or determining to receive the DMRS according to the first information or the sixth information, etc.

A ninth aspect provides a communication system comprising the communication apparatus of the seventh aspect and the eighth aspect.

In a tenth aspect, there is provided a computer readable storage medium for storing computer instructions which, when run on a computer, cause the computer to perform the method as shown in the first to sixth aspects or any one of its possible implementations.

In an eleventh aspect, there is provided a computer program product comprising instructions for storing computer instructions which, when run on a computer, cause the computer to perform the method as shown in the first to sixth aspects or any one of their possible implementations.

In a twelfth aspect, a circuit is provided, coupled to a memory, for performing the method as shown in the first to sixth aspects or any one of their possible embodiments. The circuitry may include chip circuitry.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

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

fig. 3 is a schematic diagram of a time domain position relationship between a first time unit and a first time domain position according to an embodiment of the present application;

fig. 4 is a schematic time domain position diagram of a DMRS indicated by a first pattern according to an embodiment of the present application;

fig. 5 is a schematic time domain position diagram of a DMRS indicated by a second pattern according to an embodiment of the present application;

fig. 6 is a flow chart of another communication method according to an embodiment of the present application;

fig. 7 is a flow chart of another communication method according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another communication device according to an embodiment of the present application;

Fig. 11 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

In order to improve flexibility of an uplink transmission mode, the application provides a communication method. The present application will be described in further detail with reference to the accompanying drawings. It should be appreciated that the specific methods of operation described in the method embodiments described below may also be applied in device embodiments or system embodiments.

As shown in fig. 1, a wireless communication system 100 provided in an embodiment of the present application includes a terminal device 101 and a network device 102. The application scenario of the wireless communication system 100 includes, but is not limited to, a New Radio (NR) system in a long term evolution (long term evolution, LTE) system fifth generation (5th generation,5G) mobile communication system, a future mobile communication system, and the like.

It should be appreciated that the terminal device 101 may be configured to support communication with network devices over general users and over the air interface of the network (universal user to network interface, uu air interface). The terminal device 101 may be provided with wireless transceiving functionality capable of communicating with one or more network devices of one or more communication systems and receiving network services provided by the network devices, including but not limited to the illustrated network device 102. By way of example, the terminal device 101 may be a device such as a terminal (terminal), a Mobile Station (MS), a mobile terminal (mobile terminal), a User Equipment (UE), or a device such as a chip or a chip system, for example, the terminal device 101 in the embodiment of the present application may be a mobile phone (or referred to as a "cellular" phone), a computer with a mobile terminal, or the like, and the terminal device 101 may also be a mobile device such as a portable, pocket, hand-held, computer-built, vehicle-mounted mobile device, a mobile phone (mobile phone), a tablet (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an augmented reality (augmented reality, AR) terminal, a wireless terminal in an industrial control (industrial control), a wireless terminal in an unmanned (unmanned) device, a wireless terminal in a remote medical device (remote media), a wireless terminal in a smart grid (smart) or a smart terminal in a smart city (smart city), a smart mobile terminal in a smart city (smart city), or the like. The terminal device 101 may be a communication chip having a communication module, a vehicle having a communication function, or an in-vehicle device (e.g., an in-vehicle communication apparatus, an in-vehicle communication chip), or the like.

Network device 102 may be an access network device (or access network site). The access network device refers to a device that provides a network access function, such as a radio access network (radio access network, RAN) base station, etc. The network device 102 may specifically include a Base Station (BS), or include a base station, a radio resource management device for controlling the base station, and the like. The network device 102 may also include relay stations (relay devices), access points, base stations in future 5G networks, base stations in future evolved PLMN networks, or NR base stations, etc. Network device 102 may be a wearable device or an in-vehicle device. The network device 102 may also be a chip with a communication module. It should be appreciated that in this application, network device 102 may support Uu interface communications. The network device 102 may access a core network, such as a 5G core network, to obtain services on the core network side.

For example, network device 102 includes, but is not limited to: a gNB, an evolved node B (eNB) in the LTE system, a radio network controller (radio network controller, RNC), a radio controller under the CRAN system, a base station controller (base station controller, BSC), a home base station (e.g., home evolved nodeB, or home node B, HNB), a baseBand unit (BBU), a transmission reception point (transmitting and receiving point, TRP), a transmission point (transmitting point, TP), or a mobile switching center, etc. The network device 102 may also include future 6G or updated base stations in a mobile communication system. In some deployments, the network device may include Centralized Units (CUs) and Distributed Units (DUs). The network device may also include an active antenna unit (active antenna unit, AAU). The CUs implement part of the functions of the network device, the DUs implement part of the functions of the network device, e.g. the CUs are responsible for handling non-real time protocols and services, implementing radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer functions. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC), medium access control (media access control, MAC) and Physical (PHY) layers. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. Since the information of the RRC layer may eventually become information of the PHY layer or be converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be transmitted by the DU or by the du+aau. It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (radio access network, RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

Based on the scenario shown in fig. 1, uplink transmission of the terminal device may be implemented. An uplink communication scenario between a terminal device and a network device is described below as an example. It should be understood that the terminal device includes the terminal device 101 shown in fig. 1, and the network device may include the network device 102 shown in fig. 1. The uplink transmission shown in the present application includes a procedure of transmitting, by the terminal device, at least one of an uplink channel sounding signal (sounding reference signal, SRS) to the network device, transmitting information carried on a physical uplink shared channel (physical uplink shared channel, PUSCH) (or PUSCH carrier for short, PUSCH transmission or PUSCH transmission), transmitting information carried on a physical uplink control channel (physical uplink control channel, PUCCH) (or PUCCH carrier for short, PUCCH transmission or PUCCH transmission), or transmitting information carried on a physical random access channel (physical random access channel, PRACH) (or PRACH carrier for short, PRACH transmission or PRACH transmission).

In order to realize uplink transmission, the network device may configure the terminal device to carry demodulation reference signals (demodulation reference signal, DMRS) in the uplink PUSCH, and perform channel estimation and decoding according to the DMRS sent by the terminal device. It should be understood that, in this application, the DMRS may be located at some or all of the orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol positions in a slot (slot) occupied by the PUSCH.

The following describes a method for canceling uplink transmission. It should be appreciated that the cancelled uplink transmission may be a repetition (repetition) transmission. The repeated transmission may be a transmission scheme in which the same content is repeated a plurality of times according to the number of repeated transmissions configured by a radio resource control (radio resource control, RRC) message or DCI.

In one possible approach, UL CI is introduced in physical layer enhancement to indicate cancellation of uplink transmission in ultra-reliable and low-latency communications (URLLC) techniques. The UL CI may be indicated by a downlink control information (downlink control information, DCI) format (format) 2_4, informing a group of terminal devices of physical resource blocks (physical resource block, PRBs) and OFDM, and canceling uplink transmission by the terminal devices on all OFDM symbols after the PRBs indicated by the UL CI and the first OFDM symbol indicated by the UL CI starting from the first OFDM symbol indicated by the UL CI. In addition, if the uplink transmission is a repetition (repetition) transmission, the repetition transmission is canceled on all OFDM symbols after the PRB indicated by the UL CI and the first OFDM symbol indicated by the UL CI, without affecting other repetition transmissions.

In another approach, low priority upstream transmissions are cancelled by high priority transmissions.

Specifically, the terminal device performs uplink transmission 1 on transmission resource 1, and when the terminal device needs to perform uplink transmission 2 with higher priority on transmission resource 2 and the transmission resource 2 overlaps (overlap) with transmission resource 1, the terminal device cancels uplink transmission 1 at the latest before the first OFDM symbol occupied by the transmission resource overlapping (overlap) with transmission resource 1 on transmission resource 2, and starts uplink transmission 2 from the first OFDM symbol.

For example, for PUSCH transmissions, uplink transmission 1 and uplink transmission 2 may be scheduled by downlink control information (downlink control information, DCI) or by RRC for the network device. For example, the network device may indicate, through DCI, transmission resource 1 occupied by uplink transmission 1 and indicate, through DCI, transmission resource 2 occupied by uplink transmission 2.

In addition, the uplink transmission may be interrupted by the downlink transmission.

Currently, in the above manner of canceling uplink transmission, the cancelled uplink transmission is not recovered, uplink transmission efficiency is reduced, and no other cancellation mechanism may be used as an alternative. Therefore, the flexibility of the uplink cancellation mechanism needs to be improved.

In order to improve flexibility of an uplink transmission mode, a communication method is provided in an embodiment of the present application. The method may be implemented by a network device (or a component in a network device such as a processor, a chip or a chip system, etc.) and a terminal device (or a component in a terminal device such as a processor, a chip or a chip system, etc.). Such as terminal device 101 shown in fig. 1, and a network device, such as network device 102 shown in fig. 1.

As shown in fig. 2, the method may include the steps of:

s101: the network device sends first information, where the first information is used to instruct cancellation of uplink transmission at the first time domain location, where the uplink transmission includes transmission of DMRS and/or data. Here the cancellation may be replaced by a stop, a termination or an interruption, etc. The first time domain position may be a partial time domain position within a fourth time unit (e.g., a symbol, a combination of symbols, a slot, or a combination of slots), or a time domain position comprising at least one fourth time unit.

Accordingly, the terminal device receives the first information.

The first time domain position is overlapped with a first time unit, wherein the first time unit is an independently scheduled time domain position, and the first time unit carries uplink transmission. The first time units may include one or more fourth time units. The time domain position of the first DMRS in the first time unit is determined according to a first pattern, or the first pattern is used to indicate the position of the first DMRS in the first time unit. The first information may also be said to cancel transmitting the first DMRS in the first pattern.

It should be appreciated that the first time units in this application may be independently scheduled. The independent scheduling refers to the first time unit as an uplink resource indicated by the uplink scheduling information, or the independent scheduling refers to the first time unit as a minimum unit of the uplink scheduling time domain resource. For example, each first time unit may be scheduled as an independent scheduling unit, or a plurality of first time units may be scheduled consecutively. The first time unit may be referred to as a virtual super slot (virtual super slot, VS-slot), and accordingly, one slot may be referred to as a normal slot.

Illustratively, the above first information includes UL CI or scheduling information (e.g., DCI) for scheduling uplink transmission. Wherein, if the first information includes UL CI, the first time domain location includes a time domain location indicated by UL CI, e.g., if the first information indicates OFDM symbol, the first time domain location includes OFDM symbol indicated by the first information. If the first information includes scheduling information, the scheduling information is used to schedule higher priority uplink transmissions, and the first time domain location includes a time domain location occupied by the higher priority scheduled uplink transmissions.

The above first information may also be used to indicate to stop transmission of the first DMRS located after the first time domain position in the first time unit, or the first information may indicate to stop transmission of the first DMRS located at the first time domain position and stop transmission of the first DMRS located after the first time domain position in the first time unit. In other words, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain position and to stop transmission of the first DMRS at a time domain position located after the first time domain position within the first time unit.

As shown in fig. 3 with reference to a number (a), taking an example that the first time domain position is a slot, the terminal device may cancel, according to the first information, transmission of the first DMRS on the slot located after the first time domain position (or alternatively, after the last slot of the first time domain position) in the first time unit.

Alternatively, the first information may be further used to indicate that the second time unit after stopping at the first time domain position transmits the first DMRS according to the first pattern, or the first information may be used to indicate that the transmission of the first DMRS at the first time domain position is stopped, and the second time unit after stopping at the first time domain position transmits the first DMRS according to the first pattern. In other words, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain position and to stop transmission of the first DMRS at a time domain position located after the first time domain position within the first time unit, and to indicate to still transmit the first DMRS in the first pattern after the first time domain position.

Alternatively, as indicated by the number (b) in fig. 3, the length of the second time unit may be the same as the first time unit, or the number of time units (e.g., slots and/or symbols) in the second time unit may be the same as the number of time units in the first time unit. In addition, the length of the second time unit may not be the same as the first time unit, such as the length of the second time unit being longer (or shorter) than the length of the first time unit.

Alternatively, the first information may be further used to indicate to stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position to transmit the second DMRS in the second pattern, where the first time unit includes the third time unit. In other words, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain position and to stop transmission of the first DMRS at a time domain position located after the first time domain position within the first time unit, and to indicate to transmit the second DMRS in the second pattern within a third time unit located after the first time domain position. Wherein the second pattern may be the same as or different from the first pattern. That is, a first DMRS that would otherwise need to be transmitted in a first pattern is replaced with a second DMRS that is transmitted in a second pattern in a third time unit.

It should be understood that, in this application, the first DMRS refers to DMRS transmitted according to a first pattern, and the second DMRS refers to DMRS transmitted according to a second pattern.

Further, the first information may also indicate to stop transmission of the first DMRS at the first time domain position.

Alternatively, as indicated by the number (c) in fig. 3, the third time unit may be a proper subset of the first time unit, or the third time unit is a partial time domain position in the first time unit, or all time domain positions of the third time unit overlap with the partial time domain position in the first time unit. In addition, a portion of the time domain position of the third time unit may not overlap with the first time unit, for example, the third time unit includes a time domain position located after the first time domain position in the first time unit, and further includes a time domain position outside the first time unit after the first time domain position.

Optionally, the first information includes one or more fields, where the one or more fields may carry one or more of information for indicating a first time domain position, information for indicating cancellation of uplink transmission at the first time domain position, information for indicating stopping transmission of the first DMRS located after the first time domain position in the first time unit, information for indicating stopping transmission of the first DMRS in the first time domain position in the second time unit, information for indicating stopping transmission of the first DMRS in the first time domain position in the first pattern, and information for indicating transmitting the second DMRS in the second pattern in the third time unit after the first time domain position or information for indicating stopping transmission of the first DMRS in the first time domain position.

In addition, the first pattern may be set in such a way that DMRS of the existing method is distributed in each time slot.

The first information may be carried in an RRC message and/or DCI. Wherein, if the first information is carried in DCI, the first information may be scheduling information or UL CI. The DCI may be UE-specific (UE-specific) control information or cell-specific (cell-specific) control information or group common (group common) control information.

S102: and the terminal equipment cancels the transmission of the DMRS on the first time unit according to the first information, or transmits the first DMRS according to the first pattern in the second time unit according to the first information, or transmits the second DMRS according to the second pattern in the third time unit according to the first information.

According to the method, the first information can be sent to the terminal device by the network device, and the first information is used for indicating the terminal device to stop the transmission of the first DMRS located after the first time domain position in the first time unit when the uplink transmission of the first DMRS in the first time domain position is canceled, or send the first DMRS according to the first pattern in the second time unit after the first time domain position (i.e. delay the transmission of the first DMRS in the first time unit), or send the second DMRS according to the second pattern in the third time unit after the first time domain position, or stop the transmission of the first DMRS only in the first time domain position, so that more flexible DMRS transmission can be realized under the condition that the uplink transmission needs to be canceled.

A possible design of the first pattern is described below in connection with fig. 4. It should be understood that the first patterns shown herein are merely exemplary and should not be understood to show all first patterns, e.g., other first patterns may be obtained by replacing the location of the DMRS on the basis of any of the first patterns shown in fig. 4. It should be understood that the fourth time unit is illustrated in fig. 4 by taking a time slot as an example, that is, the time slot in the following example of fig. 4 may be replaced by the fourth time unit, and in practical application, the time slot in the following example may be replaced by a symbol, a combination of a plurality of symbols, or a combination of a plurality of time slots as needed.

As shown by the number (a) in fig. 4, DMRS is distributed over part or all of the symbols in each slot.

As indicated by the number (b) in fig. 4, the first time unit may include K consecutive time slots, and another first pattern provided herein may indicate that the first DMRS is located in the central time unit, where K is a positive integer. The DMRS may be distributed over part or all of the symbols of the central time unit. Wherein the central time unit is one or more time slots close to the central position in the K time slots, such as the number (b), and when k=5, the central time unit includes the 3 rd time unit; alternatively, when k=6, the center time unit includes the 3 rd time unit and/or the 4 th time unit. As indicated by the number (b), the first time units may be scheduled continuously, for example, N first time units are scheduled continuously, where N is a positive integer greater than or equal to 2. When the first pattern is adopted, the channel of the time slot of the first DMRS which is not transmitted in the first time unit multiplexes the channel estimation result of the time slot of the first DMRS.

As indicated by the number (c) in fig. 4, the first time unit may include K consecutive time slots, and another first pattern provided herein may indicate that the first DMRS is located in a first time slot and a kth time slot (or, a last time slot) in the first time unit, where K is a positive integer. The DMRS may be distributed over some or all of the symbols of the first slot and over some or all of the symbols of the kth slot. With the first pattern, interpolation is used to estimate the channel in the first time unit in which the first DMRS is not transmitted, based on the first time slot and the kth time slot in the first time unit, or joint channel estimation may be used to determine the channel of each time slot in the first time unit.

As indicated by the number (d) in fig. 4, the first time unit may include N consecutive fifth time units, each fifth time unit includes K time slots, where the number of consecutive time slots included in the first time unit is M, m=k×n+1, and where the first pattern may indicate that the time domain position occupied by the first DMRS is the 1 st, k+1 th, 2k+1 th, … th, and nk+1 th time slots in the first time unit, where M, N, K, and N are positive integers, and N is less than or equal to N. The DMRS may be distributed over some or all of the symbols in each of the 1 st, k+1 st, 2k+1 … th and nk+1 th slots in the first time unit. When the first pattern is adopted, the channel of the time slot between the two first DMRS, which is not transmitted by the first DMRS, is estimated by interpolation according to two adjacent first DMRS in the first time unit, or the channel of each time slot in the first time unit can be determined by adopting joint channel estimation.

As indicated by the number (e) in fig. 4, the first time unit may include K consecutive time slots, and another first pattern provided herein may indicate that the first DMRS is located in the first time slot in the first time unit, where K is a positive integer. The DMRS may be distributed over part or all of the symbols of the first slot. When the first pattern is adopted, the channel of the time slot of the first DMRS which is not transmitted in the first time unit multiplexes the channel estimation result of the time slot of the first DMRS.

It should be appreciated that if DMRS is available for self-channel estimation and self-decoding on each time slot of the interrupted uplink transmission, if transmission or retransmission of some/some of the time slots of some uplink transmission is cancelled, channel estimation and decoding of other time slots or retransmissions is not affected; and after DMRS reduction (DMRS-less) is introduced (i.e., scheduling VS-slot, where the VS-slot includes a plurality of normal slots, and at least one slot is not transmitted with dmrs.vs-slot, such as the first time unit indicated by the number (b), (c), (d) or (e) in fig. 4), a plurality of slots are bound (bundling), and a part of slots have no DMRS, and channel estimation can only be performed depending on other slots, where if transmission of a slot is cancelled and is not recovered, phases before and after the cancelled DMRS may be discontinuous, so that DMRS before the cancelled DMRS and channel estimation results after the cancelled DMRS cannot be used for channel estimation after the cancelled DMRS, and therefore, the base station side cannot perform effective channel estimation and decoding. By adopting the method provided by the embodiment of the application, the second time unit or the third time unit of the terminal equipment after the first time domain position can recover the transmission of the DMRS, so that the base station side carries out channel estimation and decoding according to the DMRS recovered to be transmitted, and the uplink transmission is recovered.

The first pattern may be indicated by second information (e.g. scheduling information), or the uplink transmission carried by the first time unit may be scheduled by the second information. The second information may schedule one first time unit or may be used to continuously schedule the same first time unit.

Alternatively, the second information may be carried on RRC message and/or DCI, or the first pattern may be indicated by RRC message and/or DCI. Wherein when the first pattern is indicated with an RRC message, the RRC message may be used to schedule a plurality of first time units that are consecutive (or referred to as preconfigured scheduling (CG)), and a first DMRS within the plurality of first time units is the first pattern. When the first pattern is indicated with DCI, the DCI may be used to schedule a single one of the first time units.

The second information may include one or more of indication information of the first pattern, the value of K, the value of N, the value of M, or indication information of a redundancy version (redundancy version, RV) of the first time slot (where the time slot is not replaced by a symbol, a combination of symbols, or a combination of time slots) in the first time unit.

The indication information of the first pattern may be used to indicate the first pattern, for example, numbers (a) to (e) shown in fig. 4 (or other first patterns not shown) respectively correspond to one bit (bit), and the first pattern may be indicated in the second information by a bit map (bitmap). Alternatively, a slot position indicating the slot in which the first DMRS is located may be carried, where the slot position may be a relative position, such as an index, in the first time unit.

The value of K and/or the value of N may be used to indicate the number of time slots comprised by the first time unit. For example, for the first pattern shown in numbers (b), (c) and (e) in fig. 4, the second information may indicate the value of K to indicate the number of slots included in the first time unit, and optionally, the second information may indicate the value of N; for the number (d) shown in fig. 4, the second information may indicate the values of K and N to indicate the number of slots included in the first time unit, or the second information may indicate the value of M to indicate the number of slots. It should be appreciated that when configuring the first time unit of the CG via an RRC message, the second information carried by the RRC message may indicate the values of K and N. When the first time unit is dynamically configured through the DCI, the second information carried by each DCI may indicate the value of K.

For example, the second information may independently carry the value of K (or the indication information of the value of K) or the value of N (or the indication information of the value of N), or may indicate the value of K and the value of N by means of { K, N } tuples. For example, k=1 and n=1 are denoted by 00, k=1 and n=2 are denoted by 01, k=2 and n=1 are denoted by 10, and k=2 and n=2 are denoted by 11. The meaning of the indication of the value of K, the indication of the value of N and/or the corresponding meaning of the K, N tuple may be predefined or preconfigured.

Optionally, when the second information includes the value of K, and the first pattern is indicated by the number (c) and/or (d) shown in fig. 4, the terminal device may perform joint channel estimation in the first time unit.

The above indication information of RV may indicate an RV of a first slot in a first time unit.

For example, the RVs in the first time unit may be arranged in a cyclic order of 0,2,3, and 1, for example, when the second information indicates that the RV of the first time slot in the first time unit is 0, if the first time unit includes 5 time slots, the RVs of the time slots in the first time unit are 0,2,3,1,0, respectively.

Optionally, if the terminal device stops uplink transmission at the first time domain position in the first time unit, the terminal device may set the RV of the first time slot after the first time domain position according to the RV of the last time slot before the first time domain position. For example, in the number (a) shown in fig. 3, the first time domain position coincides with the 3 rd slot (or referred to as a slot with an index of 2) in the first time unit, the last slot before the first time domain position is the 2 nd slot (or referred to as a slot with an index of 1) in the first time unit, the first slot after the first time domain position is the 4 th slot (or referred to as a slot with an index of 3) in the first time unit, and assuming that the RV of the 2 nd slot is 2, the terminal device may determine that the RV of the 4 th slot is 3 according to the sequence of 0,2,3, and 1.

The terminal device may set the RV of the first time slot after the first time domain position according to the RV of the last time slot before the first time domain position after receiving the third information. For example, the third information may indicate that the RV of the first time slot after the first time domain location is determined from the RV of the last time slot before the first time domain location. The third information may be carried in the same message as the second information. Alternatively, the third information may be separately transmitted, for example, the third information is transmitted through an RRC message, and the second information is transmitted through another RRC message or DCI.

Optionally, if the network device configures a plurality of consecutive first time units, the RV of the slot in each first time unit is determined separately. Wherein, the independent determination means that the RV of any slot in each first time unit is not determined according to the RVs of slots in other first time units. For example, the terminal device receives fourth information, where the fourth information is used for scheduling at least two first time units, or the fourth information is used for indicating time domain positions of a plurality of continuous first time units, and if RV of a first slot in the first time units indicated by the second information is 0, RV of slots in each first time unit is 0,2,3,1,0. The fourth information is one type of the second information, that is, scheduling information carried through the RRC message, for example, the fourth information may be the second information carried in the RRC message indicating that N is a positive integer greater than or equal to 2.

The terminal device may separately determine the RV of the slot in each first time unit after receiving the fifth information. For example, the fifth information may indicate that the RV of the second time unit for each of a plurality of consecutive first time units is independently determined. The fifth information may be carried in the same message as the second information. Alternatively, the fifth information may be transmitted separately, for example, the fifth information is transmitted through an RRC message, and the second information is transmitted through another RRC message or DCI.

Fig. 5 is a schematic diagram of a second pattern according to an embodiment of the present application. It should be understood that the second patterns shown here are merely exemplary and should not be understood to show all possible second patterns, e.g. other second patterns may be obtained by changing the position of the DMRS on the basis of any of the second patterns shown in fig. 5. It should be understood that the fourth time unit is illustrated in fig. 5 by taking a time slot as an example, that is, the time slot in the following example of fig. 5 may be replaced by the fourth time unit, and in practical application, the time slot in the following example may be replaced by a symbol, a combination of a plurality of symbols, or a combination of a plurality of time slots as needed. Wherein the fourth time unit in the second pattern may be the same as the fourth time unit in the first pattern.

In a first implementation, the second pattern may indicate that the second DMRS occupies each fourth time element in the third time elements. Wherein the second DMRS may be located at some or all of the symbols in each slot.

Taking k=5 and i=1 as an example, where i is an index of a last slot in the first time unit in the first time domain position, as shown in fig. 5 (a), and the third time unit is a slot in the first time unit located after the first time domain position, where each slot includes a second DMRS.

In a second implementation, the third time unit may include K- (i+1) slots, and the second pattern is used to indicate that the second DMRS occupies at least one of a first slot, a center slot, and a last slot of the K- (i+1) slots. Wherein the second DMRS occupies part or all of the symbols in the above slot.

Taking k=5 and i=1 as an example, as shown by the number (b) in fig. 5, the second pattern may indicate that the second DMRS is occupied as a center time unit in the third time unit.

Taking k=5 and i=1 as an example, as shown by the number (c) in fig. 5, the second pattern may indicate that the second DMRS occupancy is the 1 st slot and the last slot in the third time unit.

Taking k=5 and i=1 as an example, as shown by the number (d) in fig. 5, the second pattern may indicate that the second DMRS occupation is the 1 st slot in the third time unit.

The first information may also indicate a second pattern when the first information indicates that transmission of the first DMRS at the first time domain position is stopped and a third time unit after the first time domain position transmits the second DMRS in the second pattern. Alternatively, the second pattern may be indicated by separate information, for example, the second pattern may be indicated using an RRC message or DCI.

Alternatively, the second pattern may be associated with the first pattern, so that the terminal device may determine the second pattern from the first pattern without the network device indicating the second pattern. For example, if the first pattern indicates that the first DMRS occupies a central time unit in the first time unit (as shown in fig. 4 (b)), the second pattern may indicate that the second DMRS occupies a central time unit of a third time unit (as shown in fig. 5 (b)), which may be determined with reference to the central time unit of the first time unit. Similarly, if the first pattern indicates that the first DMRS occupies each slot in the first time unit (as shown in fig. 4, number (a)), the second pattern may indicate that the second DMRS occupies each slot in the third time unit (as shown in fig. 5, number (a)). If the first pattern indicates that the first DMRS occupies the first slot and the last slot in the first time unit (as shown in fig. 4, number (c)), the second pattern may indicate that the second DMRS occupies the first slot and the last slot in the third time unit (as shown in fig. 5, number (c)). If the first pattern indicates that the first DMRS occupies the first slot in the first time unit (as shown in fig. 4, number (e)), or the first pattern indicates that the first DMRS occupies the 1 st, k+1 st, 2k+ … st, and nk+1 st slots in the first time unit (as shown in fig. 4, number (d)), the second pattern may indicate that the second DMRS occupies the first slot in the third time unit (as shown in fig. 5, number (d)).

It should be appreciated that the implementation indicated by the first information above may be determined by the network device according to at least one of the first pattern, the first time domain position, the first time unit, the position of the set reference time slot P in the first time unit, or time domain position information where the first time unit and the first time domain position coincide, which may be used to indicate a time domain position where the first time unit and the first time domain position coincide, which may be determined according to the first time unit and the first time domain position. Wherein the first pattern, the first time domain position, the reference time slot P and the first time unit are configured by the network device, and therefore, the first pattern, the first time domain position, the first time unit and the time domain position where the first time unit and the first time domain position coincide are all known information for the network device.

The relation between the first pattern, the first information or the coincident time domain position information and the manner indicated by the first information is explained below by way of example. The fourth time unit is taken as an example here, that is to say the time slots appearing in the following example can be replaced by fourth time units.

For example, when the first condition is satisfied, the first information may indicate to stop transmission of the first DMRS at the first time domain position and to stop transmission of the first DMRS located after the first time domain position in the first time unit.

The first condition includes: the first time domain location coincides with a first time slot in the first time unit. Wherein the first time domain position coincides with the first time slot may be partially overlapping (i.e. the coinciding time domain position is a partial symbol of the first time slot in the first time unit) or fully overlapping (i.e. the coinciding time domain position comprises all symbols of the first time slot in the first time unit). Furthermore, the first condition is not limited to whether the first time domain position coincides with other time slots in the first time unit, for example, the first time domain position may also coincide with one or more time slots other than the first time slot at the first time unit.

In addition, the first condition includes a second condition and a third condition. The first condition may be considered to be satisfied when either the second condition or the third condition is satisfied. When the second condition is not satisfied and the third condition is not satisfied, the first condition may be considered to be not satisfied.

The second condition includes: the first time domain location coincides with all time slots in the first time unit. The first time domain position may partially overlap with all timeslots in the first time unit (i.e. the overlapping time domain position does not include at least one timeslot in the first time unit) or completely overlap (i.e. the overlapping time domain position includes all timeslots in the first time unit, but there is no specific limitation as to whether all the timeslots are included, for example, all the timeslots in the first time unit are included in the overlapping time domain position except for the first symbol of the first time slot).

The third condition includes: the first time domain position coincides with a first time slot in the first time unit, but the first time domain position does not coincide with all time slots in the first time unit, or at least does not coincide with a last time slot in the first time unit. Wherein the first time domain position coincides with the first time slot may be partially overlapping (i.e. the coinciding time domain position is a partial symbol of the first time slot in the first time unit) or fully overlapping (i.e. the coinciding time domain position comprises all symbols of the first time slot in the first time unit).

In addition, when the above first condition (or either the second condition or the third condition is satisfied), the first information may be used to indicate that transmission of the first DMRS at the first time domain position is stopped and that transmission of the first DMRS after the first time domain position in the first time unit is stopped, and the second time unit after the first time domain position transmits the first DMRS in the first pattern.

When the fourth, fifth, or sixth condition is satisfied, the first information may be used to stop transmission of the first DMRS at the first time domain location, and a third time unit after the first time domain location transmits the second DMRS in accordance with the second pattern.

The fourth condition includes: the first pattern is shown in fig. 4 number (b) (in other words, the first pattern indicates that the first DMRS is located in the central time unit of the first time unit), and the first time domain position coincides with the time domain position in which the first DMRS is located in the first time unit, but the first time domain position does not at least coincide with (or does not include) the last time slot in the first time unit.

The fifth condition includes: the first pattern is shown in fig. 4 number (c) (in other words, when the first time unit includes K slots, the first pattern indicates that the first DMRS is located in the first slot and the kth slot in the first time unit), and the first time domain position is at least not coincident with the last slot of the first time unit.

The sixth condition includes: the first pattern is shown in fig. 4 number (d) (in other words, the first time unit may include N consecutive fifth time units, each of which includes K time slots, where the number of consecutive time slots included in the first time unit is M, m=k×n+1, the first pattern indicates that the first DMRS occupies the 1 st, k+1 st, 2k+1 th, … and nk+1 th time slots in the first time unit), and the first time domain position does not overlap at least with the last (i.e., mth) time slot of the first time unit.

The network device determination of the first information is described below by way of example using the first pattern shown in fig. 4. By way of example, the following examples apply to scenarios such as: the uplink transmission of the terminal device (the uplink transmission is cancelled by the UL CI in the time slot or the first time unit as a scheduling unit), or is cancelled by other high priority transmissions, or is interrupted by the downlink transmission, wherein the other high priority transmissions are normal-slot transmissions (i.e. transmissions scheduled in the time slot as a scheduling unit) or VS-slot transmissions (i.e. transmissions scheduled in the first time unit as a scheduling unit, where the first time unit is not necessarily the same as the first time unit corresponding to the cancelled uplink transmission). The signaling to schedule the high priority transmission is higher layer signaling (e.g., RRC message) or DCI. The higher layer signaling is cell-specific or UE-specific. The DCI is a group common or UE-specific.

For the first pattern as shown in fig. 4 number (b), the network device may determine the first information according to at least one of the first pattern, the first time domain location, the first time unit, or a location where the first time domain location coincides with the first time unit.

If the first time domain position is fully overlapped with the first time unit, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain position, and a second time unit after the first time domain position transmits the first DMRS according to the first pattern, wherein the length of the second time unit may be the same as the length of the first time unit; alternatively, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain position.

The first time domain position and the first time unit are all overlapped, which means that the first time domain position and all time slots in the first time unit may be partially overlapped (that is, the overlapped time domain position does not include at least one time slot in the first time unit) or all overlapped (that is, the overlapped time domain position includes all time slots in the first time unit, but there is no specific limitation on whether all the time slots are included, for example, all the time slots in the first time unit are included in the overlapped time domain position except for the first symbol of the first time slot).

If the first time domain position partially overlaps with the first time unit, and the overlapping time domain position includes a first time slot of the first time unit but does not include a time slot in which the first DMRS in the first time unit is located, the first information may indicate to stop transmission of the first DMRS at the first time domain position and stop transmission of the first DMRS located after the first time domain position in the first time unit; alternatively, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain position, and the second time unit after the first time domain position transmits the first DMRS in the first pattern. Wherein the length of the second time unit may be the same as the length of the first time unit; alternatively, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain position.

Wherein the first time domain position partially overlaps with the first time unit, which means that the first time domain position does not overlap with at least one time slot in the first time unit (that is, the overlapping time domain position does not include at least one time slot in the first time unit).

If the first time domain position partially overlaps with the first time unit, and the overlapped time domain position includes a first time slot of the first time unit and includes a time slot in which at least one first DMRS in the first time unit is located, the first information may indicate to stop transmission of the first DMRS at the first time domain position and stop transmission of the first DMRS located after the first time domain position in the first time unit; alternatively, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain position, and a second time unit after the first time domain position transmits the first DMRS in the first pattern, wherein a length of the second time unit may be the same as a length of the first time unit; alternatively, the first information may be used to indicate that transmission of the first DMRS at the first time domain position is stopped, and a third time unit after the first time domain position, which may include a time slot after the first time domain position in the first time unit, is transmitted according to a second pattern, for example, as shown by the number (a) or the number (b) in fig. 5.

The first information may indicate to stop transmission of the first DMRS at the first time domain location if the first time domain location partially overlaps the first time unit and the overlapping time domain location does not include the first time slot of the first time unit and does not include a time slot in which the first DMRS in the first time unit is located.

If the first time domain position partially overlaps with the first time unit, and the overlapping time domain position does not include the first time slot and the last time slot of the first time unit, and includes the time slot in which at least one first DMRS of the first time unit is located, the first information may indicate to stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position may include the time slot of the first time unit located after the first time domain position, such as shown by a number (a) or a number (b) in fig. 5, to transmit the second DMRS in a second pattern.

The first information may indicate to stop transmission of the first DMRS at the first time domain location if the first time domain location partially overlaps the first time unit and the overlapping time domain location does not include the first time slot of the first time unit and includes the last time slot in the first time unit.

For the first pattern shown in fig. 4 number (c), the network device may set a reference time slot (or referred to as a reference time domain position), or may set the reference time slot in a predefined manner, and determine the first information according to at least one information of the reference time slot, the first pattern, the first time domain position, the first time unit, or a position where the first time domain position coincides with the first time unit. The position in the first time unit determines first information, wherein P is an index of a reference time slot in the first time unit, and 0 < P < K is the number of time slots included in the first time unit.

If the first time domain position partially overlaps with the first time unit and the overlapping time domain position includes a first time slot of the first time unit, the first information may indicate to stop transmission of the first DMRS at the first time domain position and stop transmission of the first DMRS located after the first time domain position in the first time unit; alternatively, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain position, and a second time unit after the first time domain position transmits the first DMRS in the first pattern, wherein a length of the second time unit may be the same as a length of the first time unit; alternatively, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain location; alternatively, the first information may indicate that transmission of the first DMRS at the first time domain position is stopped, and a third time unit after the first time domain position, which may include a time slot after the first time domain position in the first time unit, is transmitted in a second pattern, for example, as shown by a number (a) or a number (c) in fig. 5.

If the first time domain position partially overlaps with the first time unit, and the overlapping time domain position does not include the first time slot, the reference time slot P, and the last time slot of the first time unit, and includes a time slot in which at least one first DMRS of the first time unit is located, the first information may indicate to stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position, which may include a time slot of the first time unit located after the first time domain position, may transmit the second DMRS in a second pattern, such as the number (a) or the number (c) in fig. 5.

If the first time domain position partially overlaps with the first time unit and the overlapping time domain position does not include the last slot of the first time unit, the overlapping time domain position may include or be located after the reference slot P, the first information may indicate to stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position may include a slot of the first time unit located after the first time domain position, for example, as shown by a number (a) or a number (c) in fig. 5, to transmit the second DMRS in a second pattern.

If the first time domain position partially overlaps with the first time unit and the overlapping time domain position is located after the first DMRS in the last slot of the first time unit, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain position.

For the first pattern as shown in fig. 4 number (d), the network device may set a reference time slot P for each fifth time unit of the first time units, and determine the first information according to at least one information of the reference time slot P, the first pattern, the first time domain position, the first time unit, or a position where the first time domain position coincides with the first time unit. Wherein the position in the first time unit determines the first information, wherein P is an index of the reference time slot in the fifth time unit, 0 < P < K, and K is the number of time slots included in the fifth time unit.

If the first time domain position partially overlaps with the first time unit and the overlapping time domain position includes a first time slot of the first time unit, the first information may indicate to stop transmission of the first DMRS at the first time domain position and stop transmission of the first DMRS located after the first time domain position in the first time unit; alternatively, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain position, and a second time unit after the first time domain position transmits the first DMRS in the first pattern, wherein a length of the second time unit may be the same as a length of the first time unit; alternatively, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain location; alternatively, the first information may indicate that transmission of the first DMRS at the first time domain position is stopped, and a third time unit after the first time domain position, which may include a slot located after the first time domain position in a fifth time unit in which a last slot occupied by the first time domain position is located, is transmitted in a second pattern, for example, as shown by a number (a) or a number (d) in fig. 5.

If the first time domain position partially overlaps the first time unit, a first time slot occupied by the overlapping time domain position is located between the first time slot in a fifth time unit and a reference time slot P of the fifth time unit (excluding the first time slot and the reference time slot), and a last time slot occupied by the overlapping time domain position is located before a first DMRS after the fifth time unit, the first information may indicate to stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position transmits the second DMRS in a second pattern, which may include a time slot after the first time domain position in the fifth time unit in which the last time slot occupied by the overlapping time domain position is located, for example, as shown by a number (a) or a number (d) in fig. 5.

If the first time domain position partially overlaps with the first time unit, the first time slot occupied by the overlapped time domain position is located at or after the reference time slot P in a fifth time unit, and the last time slot occupied by the overlapped time domain position is located before the first DMRS after the fifth time unit, the first information may indicate to stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position may transmit the second DMRS according to a second pattern, which may include a time slot after the first time domain position in the fifth time unit in which the last time slot occupied by the overlapped time domain position is located, for example, as shown by a number (a) or a number (d) in fig. 5.

If the first time domain position partially overlaps the first time unit, the overlapping time domain position is located between a first time slot of the first time unit and a last time slot of the first time unit (the overlapping time domain position does not include the first time slot and the last time slot), and the overlapping time domain position includes a time slot in which at least one first DMRS is located, the first information may indicate that transmission of the first DMRS at the first time domain position is stopped, and a third time unit after the first time domain position transmits the second DMRS in a second pattern, which may include a time slot after the first time domain position in a fifth time unit in which the last time slot occupied by the overlapping time domain position is located, for example, as shown by a number (a) or a number (d) in fig. 5.

If the first time domain position partially overlaps with the first time unit, the overlapping time domain position is located after the first time slot of the first time unit and includes the last time slot of the first time unit, the first information may indicate to stop transmission of the first DMRS at the first time domain position.

As shown in fig. 6, the embodiment of the present application provides another communication method, where the terminal device determines an action after receiving the information for canceling the uplink transmission of the first time domain location, and the network device is not required to indicate the action.

The method may comprise the steps of:

s201: the network device sends first information, where the first information is used to instruct cancellation of uplink transmission at the first time domain location, where the uplink transmission includes transmission of DMRS and/or data. Here, the cancellation may be replaced with stop, cancel, interrupt, or the like. The first time domain position may be a partial time domain position within a fourth time unit (e.g., a symbol, a combination of symbols, a slot, or a combination of slots), or a time domain position comprising at least one fourth time unit.

Accordingly, the terminal device receives the first information.

Wherein the first time domain position overlaps (overlap) with the first time unit. The first time unit is a time domain position occupied by the uplink transmission, and the first time unit may include one or more fourth time units. The time domain position of the first DMRS in the first time unit is determined according to a first pattern, or the first pattern is used to indicate the position of the first DMRS in the first time unit. The first information may also be said to cancel transmitting the first DMRS in the first pattern.

It should be appreciated that the first time units in this application may be independently scheduled. The independent scheduling means that the first time unit is used as an uplink resource indicated by the uplink scheduling information. For example, each first time unit may be scheduled as an independent scheduling unit, or a plurality of first time units may be scheduled consecutively. The first time unit may be referred to as a virtual super slot (virtual super slot, VS-slot), and accordingly, one slot may be referred to as a normal slot.

Illustratively, the above first information includes UL CI or scheduling information (e.g., DCI) for scheduling uplink transmission. Wherein, if the first information includes UL CI, the first time domain position is a time domain position indicated by UL CI, for example, if the first information indicates OFDM symbol, the first time domain position includes OFDM symbol indicated by the first information. If the first information includes UCL, the DCI is used for scheduling uplink transmission with higher priority, and the first time domain position includes the time domain position occupied by the uplink transmission scheduled with higher priority.

S202: the terminal device performs according to the sixth information:

stopping transmission of the first DMRS at the first time domain position and stopping transmission of the first DMRS located after the first time domain position in the first time unit. As shown in fig. 3 with reference to (a), taking an example that the first time domain position is a slot, the terminal device may cancel, according to the sixth information, transmission of the first DMRS on the slot located after the first time domain position (or alternatively, after the last slot of the first time domain position) in the first time unit. Accordingly, at this time, the network device may stop the reception of the first DMRS at the first time domain location and stop the reception of the first DMRS located after the first time domain location in the first time unit according to the sixth information. Stopping the reception of DMRS may be understood as the network device not having to monitor for DMRS.

Or, stopping transmission of the first DMRS at the first time domain position and stopping transmission of the first DMRS located after the first time domain position in the first time unit, and transmitting the first DMRS in the first pattern in the second time unit located after the first time domain position. As indicated by the number (b) in fig. 3, the length of the second time unit may be the same as the first time unit, or the number of time units (e.g., slots and/or symbols) in the second time unit may be the same as the number of time units in the first time unit. In addition, the length of the second time unit may not be the same as the first time unit, such as the length of the second time unit being longer (or shorter) than the length of the first time unit. Accordingly, at this time, the network device may stop receiving the first DMRS at the first time domain location and stop receiving the first DMRS located after the first time domain location in the first time unit according to the sixth information, and receive the first DMRS according to the first pattern in the second time unit. Wherein the first pattern may be configured by the network device to the terminal device, or the first pattern may be preconfigured, so that the first pattern is known to the network device. The pre-configuration mode may be protocol definition, pre-storage, etc.

Or, stopping transmission of the first DMRS at the first time domain position, and transmitting the second DMRS according to the second pattern by a third time unit after the first time domain position. As indicated by the number (c) in fig. 3, the third time unit may be a proper subset of the first time unit, or the third time unit may be a partial time domain position in the first time unit, or all time domain positions of the third time unit may overlap with the partial time domain position in the first time unit. In addition, a portion of the time domain position of the third time unit may not overlap with the first time unit, for example, the third time unit includes a time domain position located after the first time domain position in the first time unit, and further includes a time domain position outside the first time unit after the first time domain position. Accordingly, at this time, the network device may stop transmission of the first DMRS at the first time domain location according to the sixth information, and receive the first DMRS according to the second pattern at the third time unit. Wherein the second pattern may be configured by the network device to the terminal device, or the second pattern may be preconfigured, so that the second pattern is known to the network device.

Or, the first DMRS is transmitted in the first pattern at the first time domain position (that is, the terminal device does not stop transmission of the first DMRS at the first time domain position). Accordingly, at this time, the network device may receive the first DMRS according to the first pattern at the first time domain location according to the sixth information.

Or stopping sending the first DMRS according to the first pattern at the first time domain position. Accordingly, at this time, the network device may stop receiving the first DMRS at the first time domain location according to the sixth information.

Alternatively, the above sixth information may include at least one of the first information, time domain position information of the reference time domain position in the first time unit, information of the time domain position where the first time unit coincides with the first time domain position, or indication information of the first pattern. Wherein the reference time domain position is set by the network device and is indicated to the terminal device by the network device. Alternatively, the reference time domain position may be preconfigured, e.g. the reference time domain position is located at a set position in the first time unit. The reference time domain position is for example a time slot or a combination of time slots.

The first information may be carried in an RRC message and/or DCI. Wherein, if the first information is carried in DCI, the first information may be scheduling information or UL CI. The DCI may be control information of UE-specific or control information of group common. If the first information is carried in the RRC message, the RRC message may be control information of the UE-specific or cell-specific. At this time, the sixth information may further include the first information. Alternatively, the sixth information may include information for determining that the DCI is UE-specific or group common. And/or, the sixth information may include information for determining that the RRC message is UE-specific or cell-specific.

According to the method, when the uplink transmission of the first DMRS at the first time domain position is cancelled according to the sixth information, the terminal device can stop the transmission of the first DMRS located after the first time domain position in the first time unit at the same time, or send the first DMRS according to the first pattern in the second time unit after the first time domain position (i.e. delay the transmission of the first DMRS in the first time unit), or send the second DMRS according to the second pattern in the third time unit after the first time domain position, or stop the transmission of the first DMRS only at the first time domain position, or not stop the transmission of the first DMRS at the first time domain position, so that more flexible DMRS transmission can be realized in the scene that the uplink transmission needs to be cancelled.

The implementation of the first pattern and the second pattern can be seen from the foregoing description. For example, the first pattern is shown as any one of numbers (a), (b), (c), (d) or (e) in fig. 4, and the second pattern is shown as any one of numbers (a), (b), (c) or (d) in fig. 5.

The actions to be performed by the terminal device according to the sixth information are described below by way of example. The fourth time unit is taken as an example here, that is to say the time slots appearing in the following example can be replaced by fourth time units.

For example, when the first condition is satisfied, the terminal device may stop transmission of the first DMRS at the first time domain position and stop transmission of the first DMRS located after the first time domain position in the first time unit.

The first condition includes: the first time domain location coincides with a first time slot in the first time unit. Wherein the first time domain position coincides with the first time slot may be partially overlapping (i.e. the coinciding time domain position is a partial symbol of the first time slot in the first time unit) or fully overlapping (i.e. the coinciding time domain position comprises all symbols of the first time slot in the first time unit). Furthermore, the first condition is not limited to whether the first time domain position coincides with other time slots in the first time unit, for example, the first time domain position may also coincide with one or more time slots of the first time unit that are other than the first time slot.

In addition, the first condition includes a second condition and a third condition. The first condition may be considered to be satisfied when the second condition or the third condition is satisfied. When the second condition is not satisfied and the third condition is not satisfied, the first condition may be considered to be not satisfied.

In addition, when the above first condition (or either the second condition or the third condition) is satisfied, the terminal device may further stop transmission of the first DMRS at the first time domain position and stop transmission of the first DMRS after the first time domain position in the first time unit, and the second time unit after the first time domain position transmits the first DMRS in the first pattern.

When the fourth condition, the fifth condition, or the sixth condition is satisfied, the terminal device may stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position transmits the second DMRS in the second pattern.

The sixth condition includes: the first pattern is shown in fig. 4 number (d) (in other words, the first time unit may include N consecutive fifth time units, each of which includes K time slots, where the number of consecutive time slots included in the first time unit is M, m=k×n+1, the first pattern indicates that the time domain position occupied by the first DMRS is the 1 st, k+1 st, 2k+1 … th, and nk+1 th time slots in the first time unit), and the first time domain position does not overlap with at least the last time slot of the first time unit.

When the seventh condition or the eighth condition is satisfied, the terminal device may transmit the first DMRS according to the first pattern at the first time domain location.

The seventh condition includes: the first time slot in the coincident time domain position is located after the time slot in which the reference time domain position is located, and the coincident time domain position does not include the time slot in which at least one first DMRS in the first time unit indicated by the first pattern is located, and the first information is cell-specific or group-common control information.

The eighth condition includes that a first time slot in a coincident time domain position is located after a first time slot in the first time unit, and the coincident time domain position includes a time slot in which at least one first DMRS in the first time unit indicated by a first pattern is located, and the first information is cell-specific or group-common control information.

Taking the first pattern shown in fig. 4 as an example, the actions that the terminal device determines to be performed according to the sixth information are described below by way of example. By way of example, the following examples apply to scenarios such as: the uplink transmission of the terminal device (the uplink transmission takes a time slot or a first time unit as a scheduling unit) is cancelled by the UL CI, or is cancelled by other high priority transmissions, or is interrupted by downlink transmissions, where the other high priority transmissions are normal-slot transmissions (i.e. transmissions scheduled in a time slot as a scheduling unit) or VS-slot transmissions (i.e. transmissions scheduled in a first time unit as a scheduling unit, where the first time unit is not necessarily the same as the first time unit corresponding to the cancelled uplink transmission), and the signaling for scheduling the high priority transmissions is high layer signaling or DCI. The higher layer signaling is cell-specific or UE-specific. The DCI is a group common or UE-specific (in other words, the first information is cell-specific or control information of the group common or UE-specific).

For the first pattern as shown in fig. 4 number (b), the terminal device may determine an action to be performed according to at least one of the first pattern, the first time domain position, the first time unit, or a position where the first time domain position coincides with the first time unit, and perform the action.

If the first time domain position is entirely overlapped with the first time unit, the terminal device performs one of the following: the transmission of the first DMRS at the first time domain position may be stopped, and a second time unit after the first time domain position may transmit the first DMRS in a first pattern, wherein a length of the second time unit may be the same as a length of the first time unit; alternatively, the terminal device may be configured to instruct to stop transmission of the first DMRS at the first time domain location.

If the first time domain position partially overlaps the first time unit and the overlapping time domain position includes a first time slot of the first time unit but does not include a time slot in the first time unit where the first DMRS is located, the terminal device performs one of: stopping transmission of the first DMRS at the first time domain position, and stopping transmission of the first DMRS located after the first time domain position in the first time unit; or, stopping transmission of the first DMRS at the first time domain position, and transmitting the first DMRS in the first pattern by a second time unit after the first time domain position, wherein the length of the second time unit may be the same as the length of the first time unit; alternatively, the terminal device may stop transmission of the first DMRS at the first time domain location.

If the first time domain position partially overlaps with the first time unit, and the overlapping time domain position includes a first time slot of the first time unit and includes a time slot in which at least one first DMRS in the first time unit is located, the terminal device performs one of: stopping transmission of the first DMRS at the first time domain position, and stopping transmission of the first DMRS located after the first time domain position in the first time unit; or, stopping transmission of the first DMRS at the first time domain position, and transmitting the first DMRS in the first pattern by a second time unit after the first time domain position, wherein the length of the second time unit may be the same as the length of the first time unit; alternatively, transmission of the first DMRS at the first time domain position is stopped, and a third time unit after the first time domain position, which may include a time slot after the first time domain position in the first time unit, is transmitted according to a second pattern, for example, as shown by the number (a) or the number (b) in fig. 5.

If the first time domain position partially overlaps with the first time unit and the overlapping time domain position does not include the first time slot of the first time unit and does not include the time slot in which the first DMRS in the first time unit is located, the terminal device may stop transmission of the first DMRS at the first time domain position.

If the first time domain position partially overlaps with the first time unit, and the overlapping time domain position does not include the first time slot and the last time slot of the first time unit, and includes the time slot in which at least one first DMRS in the first time unit is located, the terminal device may stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position may transmit the second DMRS in a second pattern, which may include the time slot in the first time unit located after the first time domain position, for example, as shown by a number (a) or a number (b) in fig. 5.

If the first time domain position partially overlaps the first time unit and the overlapping time domain position does not include the first time slot of the first time unit and includes the last time slot in the first time unit, the terminal device may stop transmission of the first DMRS at the first time domain position.

For the first pattern shown in fig. 4 number (c), the network device may set the reference time slot P, or may determine the reference time slot in a preconfigured manner, and the terminal device may determine an action to be performed according to at least one information of the reference time slot P, the first pattern, the first time domain position, the first time unit, or a position where the first time domain position coincides with the first time unit, and perform the action. The position in the first time unit determines first information, wherein P is an index of a reference time slot in the first time unit, and 0 < P < K is the number of time slots included in the first time unit.

If the first time domain position and the first time unit are all overlapped, the terminal device may stop transmission of the first DMRS at the first time domain position, and a second time unit after the first time domain position transmits the first DMRS according to the first pattern, wherein the length of the second time unit may be the same as the length of the first time unit; alternatively, the terminal device may stop transmission of the first DMRS at the first time domain location.

If the first time domain position partially overlaps with the first time unit and the overlapping time domain position includes a first time slot of the first time unit, the terminal device may stop transmission of the first DMRS at the first time domain position and stop transmission of the first DMRS located after the first time domain position in the first time unit; alternatively, the terminal device may stop transmission of the first DMRS at the first time domain position, and transmit the first DMRS in the first pattern at a second time unit after the first time domain position, wherein the length of the second time unit may be the same as the length of the first time unit; alternatively, the terminal device may stop transmission of the first DMRS at the first time domain location; alternatively, the terminal device may stop transmission of the first DMRS at the first time domain position, and transmit the second DMRS in a second pattern in a third time unit after the first time domain position, where the third time unit may include a time slot after the first time domain position in the first time unit, and the second pattern is shown by a number (a) or a number (c) in fig. 5.

If the first time domain position partially overlaps with the first time unit, and the overlapping time domain position does not include the first time slot, the reference time slot P, and the last time slot of the first time unit, and includes the time slot in which at least one first DMRS of the first time unit is located, the terminal device may stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position may include the time slot of the first time unit located after the first time domain position, for example, as shown by a number (a) or a number (c) in fig. 5, transmits the second DMRS in a second pattern.

If the first time domain position partially overlaps with the first time unit and the overlapping time domain position does not include the last slot of the first time unit, the overlapping time domain position may include or be located after the reference slot P, the terminal device may stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position may include a slot of the first time unit located after the first time domain position, for example, as shown by a number (a) or a number (c) in fig. 5, transmits the second DMRS in a second pattern. In addition, if the higher layer signaling for scheduling the high priority transmission is cell-specific, or if the DCI for scheduling the high priority transmission is group common, the terminal device may further transmit the first DMRS according to the first pattern at the first time domain position.

If the higher layer signaling for scheduling the high priority transmission is cell-specific, or if the DCI for scheduling the high priority transmission is group common, and the first time domain position partially overlaps with the first time unit, and the overlapping time domain position includes the last slot of the first time unit, the terminal device may further transmit the first DMRS according to the first pattern at the first time domain position.

If the first time domain position partially overlaps with the first time unit and the overlapping time domain position is located after the first DMRS in the last slot of the first time unit, the terminal device may stop transmission of the first DMRS at the first time domain position.

For the first pattern shown in fig. 4 number (d), the network device may set a reference time slot P for each fifth time unit in the first time units (or determine the reference time slot by a preconfigured manner), and the terminal device may determine an action to be performed according to at least one information among the reference time slot P, the first pattern, the first time domain position, the first time unit, or a position where the first time domain position coincides with the first time unit, and perform the action. Wherein the position in the first time unit determines the first information, wherein P is an index of the reference time slot in the fifth time unit, 0 < P < K, and K is the number of time slots included in the fifth time unit.

If the first time domain position and the first time unit are all overlapped, the terminal device may stop transmission of the first DMRS at the first time domain position, and a second time unit after the first time domain position transmits the first DMRS according to the first pattern, wherein the length of the second time unit may be the same as the length of the first time unit; alternatively, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain position.

If the first time domain position partially overlaps with the first time unit and the overlapping time domain position includes a first time slot of the first time unit, the terminal device may stop transmission of the first DMRS at the first time domain position and stop transmission of the first DMRS located after the first time domain position in the first time unit; alternatively, the terminal device may stop transmission of the first DMRS at the first time domain position, and transmit the first DMRS in the first pattern at a second time unit after the first time domain position, wherein the length of the second time unit may be the same as the length of the first time unit; alternatively, the first information may be used to indicate to stop transmission of the first DMRS at the first time domain location; alternatively, the terminal device may stop transmission of the first DMRS at the first time domain position, and send the second DMRS according to a second pattern in a third time unit after the first time domain position, where the third time unit may include a time slot located after the first time domain position in a fifth time unit where a last slot occupied by the first time domain position is located, where the second pattern is shown in fig. 5 by a number (a) or a number (d).

If the first time domain position partially overlaps the first time unit, the first time slot occupied by the overlapping time domain position is located between the first time slot in a fifth time unit and the reference time slot P of the fifth time unit (excluding the first time slot and the reference time slot), and the last time slot occupied by the overlapping time domain position is located before the first DMRS after the fifth time unit, the terminal device may stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position may transmit the second DMRS according to a second pattern, which may include a time slot after the first time domain position in the fifth time unit where the last time slot occupied by the overlapping time domain position is located, for example, as shown by the number (a) or the number (d) in fig. 5.

If the first time domain position partially overlaps with the first time unit, the first time slot occupied by the overlapped time domain position is located at or after the reference time slot P in a fifth time unit, and the last time slot occupied by the overlapped time domain position is located before the first DMRS after the fifth time unit, the terminal device may stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position may transmit the second DMRS according to a second pattern, which may include a time slot located after the first time domain position in the fifth time unit where the last time slot occupied by the overlapped time domain position is located, for example, as shown by a number (a) or a number (d) in fig. 5. In addition, if the higher layer signaling for scheduling the high priority transmission is cell-specific, or if the DCI for scheduling the high priority transmission is group common, the terminal device may further transmit the first DMRS according to the first pattern at the first time domain position.

If the first time domain position partially overlaps the first time unit, the overlapping time domain position is located between a first time slot of the first time unit and a last time slot of the first time unit (the overlapping time domain position does not include the first time slot and the last time slot), and the overlapping time domain position includes a time slot in which at least one first DMRS is located, the terminal device may stop transmission of the first DMRS at the first time domain position, and a third time unit after the first time domain position may transmit the second DMRS according to a second pattern, for example, as shown by a number (a) or a number (d) in fig. 5, where the third time unit after the first time domain position may include a time slot after the first time domain position in a fifth time unit in which the last time slot occupied by the overlapping time domain position is located. In addition, if the higher layer signaling for scheduling the high priority transmission is cell-specific, or if the DCI for scheduling the high priority transmission is group common, the terminal device may further transmit the first DMRS according to the first pattern at the first time domain position.

If the first time domain position partially overlaps the first time unit, the overlapping time domain position is located after the first time slot of the first time unit and includes the last time slot of the first time unit, the terminal device may stop transmission of the first DMRS at the first time domain position. In addition, if the higher layer signaling for scheduling the high priority transmission is cell-specific, or if the DCI for scheduling the high priority transmission is group common, the terminal device may further transmit the first DMRS according to the first pattern at the first time domain position.

It should be understood that in the above example, the action performed by the terminal device according to the sixth information corresponds to the action performed by the network device according to the sixth information. When there may be a plurality of actions determined according to the sixth information, the terminal device and the network device may select the corresponding actions according to a protocol definition or a preconfigured manner, respectively. For example, with respect to the first pattern shown in fig. 4 number (b), when the first time domain position and the first time unit are all overlapped, the terminal device stops transmission of the first DMRS at the first time domain position, and the second time unit after the first time domain position transmits the first DMRS according to the first pattern, the network device stops reception of the first DMRS at the first time domain position, and the second time unit after the first time domain position receives the first DMRS according to the first pattern.

For example, when the terminal device stops transmission of the first DMRS at the first time domain position and stops transmission of the first DMRS located after the first time domain position in the first time unit according to the sixth information, the network device stops reception of the first DMRS at the first time domain position and stops reception of the first DMRS located after the first time domain position in the first time unit according to the sixth information; or when the terminal device stops transmission of the first DMRS at the first time domain position according to the sixth information and stops transmission of the first DMRS located after the first time domain position in the first time unit, and the second time unit located after the first time domain position transmits the first DMRS according to the first pattern, the network device stops reception of the first DMRS at the first time domain position according to the sixth information and stops reception of the first DMRS located after the first time domain position in the first time unit, and receives the first DMRS according to the first pattern in the second time unit; or when the terminal device stops the transmission of the first DMRS at the first time domain position according to the sixth information and the second DMRS are transmitted according to the second pattern by a third time unit after the first time domain position, the network device stops the transmission of the first DMRS at the first time domain position according to the sixth information and receives the first DMRS according to the second pattern by the third time unit; or when the terminal equipment sends the first DMRS according to the first pattern at the first time domain position according to the sixth information, the network equipment receives the first DMRS according to the first pattern at the first time domain position according to the sixth information; or when the terminal equipment stops sending the first DMRS according to the first pattern at the first time domain position according to the sixth information, the network equipment stops receiving the first DMRS at the first time domain position according to the sixth information.

As shown in fig. 7, another communication method is provided in the embodiments of the present application, for implementing the indication of the first time unit. In an example where the method is performed by a network device and a terminal device, the method may comprise the steps of:

s301: the network device transmits the second information. The second information may include indication information of the first pattern, a value of K, a value of N, a value of M, or indication information of the first RV in the first time unit.

The first pattern, the value of K, the value of N, the value of M, or the indication information of the first RV in the first time unit may refer to the foregoing description of the present application.

For example, the second information may be carried on an RRC message or DCI.

S302: the terminal device receives the second information.

By adopting the method, the indication of the first time unit can be realized, and the scheduling based on the first time unit can be realized.

Optionally, the network device may further send first information and third information to the terminal device, where the first information may be used to indicate that uplink transmission at the first time domain position is stopped, and the third information may indicate that the RV of the first time slot after the first time domain position is determined according to the RV of the last time slot before the first time domain position. Therefore, in the case that the uplink transmission of the first time domain position is canceled, the terminal device may determine the RV of the first time slot after the first time domain position according to the RV of the last time slot before the first time domain position.

Optionally, when the value of N included in the second information is greater than or equal to 2, the second information is used to indicate a plurality of first time units that are continuously scheduled, and the network device may further send fifth information, where the fifth information is used to indicate that RV of a fourth time unit of each of the plurality of continuous first time units is independently determined. Thus, the terminal device may independently determine the RV of the fourth time unit in each first time unit according to the fifth information.

It should be understood that the sequence of acquiring (or receiving) part or all of the first information, the second information, the third information, the fourth information, the fifth information, or the sixth information by the terminal device is not specifically limited in this application.

Communication devices for implementing the above method in the embodiments of the present application are described below with reference to the accompanying drawings. Therefore, the above contents can be used in the following embodiments, and repeated contents are not repeated.

Fig. 8 is a schematic block diagram of a communication device provided in an embodiment of the present application. The communication means is illustratively a terminal device 800 as shown in fig. 8.

Terminal device 800 includes a processing module 810 and a transceiver module 820. The terminal device 800 may be a network device, a chip applied in the terminal device, or other combined devices, components, etc. having the functions of the terminal device. When the terminal device 800 is a terminal device, the transceiver module 820 may be a transceiver, which may include an antenna, radio frequency circuits, etc., and the processing module 810 may be a processor, such as a baseband processor, which may include one or more central processing units (central processing unit, CPU) therein. When the terminal device 800 is a component having the above-described terminal device functions, the transceiver module 820 may be a radio frequency unit, and the processing module 810 may be a processor, for example, a baseband processor. When the terminal device 800 is a chip system, the transceiver module 820 may be an input/output interface of a chip (e.g., a baseband chip), and the processing module 810 may be a processor of the chip system and may include one or more central processing units. It is to be appreciated that the processing module 810 in embodiments of the present application may be implemented by a processor or processor-related circuit component, and the transceiver module 820 may be implemented by a transceiver or transceiver-related circuit component.

For example, the processing module 810 may be configured to perform all operations performed by the terminal device in any of the embodiments shown in fig. 2, 6-7, except for the transceiving operations, e.g., determining to perform a corresponding action based on the first information and/or the sixth information, and/or to support other processes of the techniques described herein, such as generating a message, information, and/or signaling sent by the transceiving module 820, and processing the message, information, and/or signaling received by the transceiving module 820. The transceiver module 820 may be used to perform all of the receiving and transmitting operations performed by the terminal device in any of the embodiments shown in fig. 2, 6-7, e.g., S101, S201, and S302, and/or to support other processes of the techniques described herein, e.g., transmission of DMRS.

In addition, the transceiver module 820 may be a functional module that can perform both a transmitting operation and a receiving operation, for example, the transceiver module 820 may be used to perform all the transmitting operation and the receiving operation performed by the terminal device in any of the embodiments shown in fig. 2, 6 to 7, for example, the transceiver module 820 may be considered to be a transmitting module when performing the transmitting operation and the transceiver module 820 may be considered to be a receiving module when performing the receiving operation; alternatively, the transceiver module 820 may be two functional modules, where the transceiver module 820 may be regarded as a generic term of the two functional modules, and the two functional modules are respectively a transmitting module and a receiving module, where the transmitting module is used to perform a transmitting operation, for example, the transmitting module may be used to perform all transmitting operations performed by the terminal device in any of the embodiments shown in fig. 2, 6 to 7, and the receiving module is used to perform a receiving operation, for example, the receiving module may be used to perform all receiving operations performed by the terminal device in any of the embodiments shown in fig. 3 to 5.

Fig. 9 is a schematic block diagram of another communication device provided in an embodiment of the present application. Illustratively, the communication device is, for example, a network apparatus 900.

The network device 900 may include a processing module 910 and a transceiver module 920. The network device 900 may be a network device as shown, or may be a chip applied in a network device or other combination device, component, etc. having the functions of the network device. When network device 900 is a network device, transceiver module 920 may be a transceiver, which may include an antenna, radio frequency circuitry, and the like, and processing module 910 may be a processor, which may include one or more CPUs. When the network device 900 is a component having the above network device functions, the transceiver module 920 may be a radio frequency unit, and the processing module 910 may be a processor, for example, a baseband processor. When network device 900 is a system-on-chip, transceiver module 920 may be an input-output interface of a chip (e.g., a baseband chip), and processing module 910 may be a processor of the system-on-chip, and may include one or more central processing units. It is to be appreciated that the processing module 910 in embodiments of the present application may be implemented by a processor or processor-related circuit component, and the transceiver module 920 may be implemented by a transceiver or transceiver-related circuit component.

For example, the processing module 910 may be configured to perform all operations performed by the network device in any of the embodiments shown in fig. 2, 6-7, e.g., perform S302, such as generating a message, information, and/or signaling sent by the transceiver module 920, and/or processing a message, information, and/or signaling received by the transceiver module 920, and/or other processes for supporting the techniques described herein. Transceiver module 920 may be used to perform all of the receiving operations performed by the network device in any of the embodiments shown in fig. 2, 6-7, e.g., S101, S102, S201, S202, S301, and S401, and/or to support other processes of the techniques described herein, e.g., receiving CSI reports from a terminal device, etc.

In addition, the transceiver module 920 may be a functional module that can perform both a transmitting operation and a receiving operation, for example, the transceiver module 920 may be used to perform all the transmitting operation and the receiving operation performed by the network device in any of the embodiments shown in fig. 2, 6 to 7, for example, the transceiver module 920 may be considered to be a transmitting module when performing the transmitting operation, and the transceiver module 920 may be considered to be a receiving module when performing the receiving operation; alternatively, the transceiver module 920 may be two functional modules, where the transceiver module 920 may be regarded as a generic term of the two functional modules, and the two functional modules are a transmitting module and a receiving module, respectively, where the transmitting module is used to perform a transmitting operation, for example, the transmitting module may be used to perform all transmitting operations performed by the network device in any of the embodiments shown in fig. 2, 6 to 7, and the receiving module is used to perform a receiving operation, for example, the receiving module may be used to perform all receiving operations performed by the network device in the embodiments shown in fig. 3 or 5 to 7.

The embodiment of the application also provides a communication device which can be a terminal device or a circuit. The communication means may be adapted to perform the actions performed by the terminal device in the above-described method embodiments.

Fig. 10 shows a simplified schematic diagram of the structure of a terminal device when the communication device is a terminal device. Is convenient to understand and illustrate. As shown in fig. 10, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor is shown in fig. 10. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, which is not limited by the embodiments of the present application.

In the embodiment of the present application, the antenna and the radio frequency circuit with the transmitting and receiving functions may be regarded as a transmitting and receiving unit of the terminal device (the transmitting and receiving unit may be one functional unit, which can implement the transmitting function and the receiving function, or the transmitting and receiving unit may also include two functional units, which are a receiving unit capable of implementing the receiving function and a transmitting unit capable of implementing the transmitting function, respectively), and the processor with the processing function may be regarded as a processing unit of the terminal device. As shown in fig. 10, the terminal device includes a transceiving unit 1010 and a processing unit 1020. The transceiver unit may also be referred to as a transceiver, transceiver device, etc. The processing unit may also be called a processor, a processing board, a processing module, a processing device, etc. Alternatively, a device for implementing a receiving function in the transceiver unit 1010 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiver unit 1010 may be regarded as a transmitting unit, i.e., the transceiver unit 1010 includes a receiving unit and a transmitting unit. The transceiver unit may also be referred to as a transceiver, transceiver circuitry, or the like. The receiving unit may also be referred to as a receiver, or receiving circuit, among others. The transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be appreciated that the transceiver unit 1010 may correspond to the transceiver module 820, or the transceiver module 820 may be implemented by the transceiver unit 1010. The transceiver unit 1010 is configured to perform the sending operation and the receiving operation of the terminal device in the above method embodiments, for example, perform the corresponding actions according to the first information and/or the sixth information determination, and/or are used to support other procedures of the technology described herein. The processing unit 1020 may correspond to the processing module 810, or the processing module 810 may be implemented by the processing unit 1020. The processing unit 1020 is configured to perform operations on the terminal device other than the transceiving operations in the method embodiments described above, for example, to perform all of the receiving and transmitting operations performed by the terminal device in the embodiments shown in any of fig. 2, 6-7, for example, S101, S201, and S302, and/or to support other procedures of the techniques described herein, for example, transmission of DMRS.

When the apparatus in the embodiment of the present application is a network device, fig. 11 shows a simplified schematic structural diagram of the network device. As shown in fig. 11, the network device includes a processor, a memory, a radio frequency unit (or radio frequency circuit), or an antenna, etc. structure. The processor is mainly used for processing communication protocols and communication data, controlling the network equipment, executing software programs, processing data of the software programs and the like. The memory is mainly used for storing software programs and data. The radio frequency unit is mainly used for converting the baseband signal and the radio frequency signal and processing the radio frequency signal.

As shown in fig. 11, the network device may include a transceiver module 1110 and a processing module 1120, wherein the transceiver module may include a transmitting module and a receiving module, or the transceiver module 1110 may be a module capable of implementing transmitting and receiving functions. The transceiver module 1110 may correspond to the transceiver module 920 in fig. 9, i.e., the actions performed by the transceiver module 920 may be performed by the transceiver module 1110. Alternatively, the transceiver module 1110 may also be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 1111 and a radio frequency unit 1112. The transceiver module 1110 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals and baseband signals. The processing module 1110 is mainly used for performing baseband processing, controlling network equipment, and the like. The transceiver module 1110 and the processing module 1120 may be physically located together or may be physically separate, i.e., a distributed base station.

Illustratively, the transceiver module 1110 may include one or more radio frequency units, such as a remote radio frequency unit (remote radio unit, RRU), and the processing module 1120 may include one or more baseband units (BBU) (also referred to as digital units, DUs).

In an example, the processing module 1120 may be configured by one or more single boards, where the multiple single boards may support radio access networks of a single access system (such as an LTE network), or may support radio access networks of different access systems (such as an LTE network, a 5G network, or other networks). The processing module 1120 also includes a memory 1121 and a processor 1122. The memory 1121 is used to store necessary instructions and data. The processor 1122 is used to control the base station to perform the necessary actions, for example, to control the base station to perform the operational flows described above with respect to the network device in the method embodiments. The memory 1121 and processor 1122 may serve one or more boards. That is, the memory and the processor may be separately provided on each board. It is also possible that multiple boards share the same memory and processor. In addition, each single board can be provided with necessary circuits.

The embodiment of the application provides a communication system. The communication system may comprise the terminal device as described above in relation to the embodiments shown in fig. 1 to 3, and the network device as described in relation to the embodiments shown in fig. 1 to 3. Alternatively, the terminal device and the network device in the communication system may perform the communication method shown in any one of fig. 3 to 5.

The present application further provides a computer readable storage medium, where a computer program is stored, where the computer program when executed by a computer may implement a procedure related to a terminal device or a network device in any of the embodiments of the method described above.

The embodiments of the present application further provide a computer program product, where the computer program product is configured to store a computer program, where the computer program when executed by a computer may implement a procedure related to a terminal device or a network device in any of the embodiments of the method described above.

The present application further provides a chip or a chip system, where the chip may include a processor, and the processor may be configured to invoke a program or an instruction in a memory to execute a procedure related to a terminal device or a network device in any of the embodiments of the method described above. The chip system may include the chip, and may also include other components such as a memory or transceiver.

Embodiments of the present application also provide a circuit, which may be coupled to a memory, and may be used to perform a procedure associated with a terminal device or a network device in any of the embodiments of the method described above. The chip system may include the chip, and may also include other components such as a memory or transceiver.

It should be appreciated that the processors referred to in the embodiments of the present application may be CPUs, but may also be other general purpose processors, digital signal processors (digital signal processor, DSPs), application specific integrated circuits (application specific integrated circuit, ASICs), off-the-shelf programmable gate arrays (field programmable gate array, FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory referred to in the embodiments of the present application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

Note that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, the memory (storage module) is integrated into the processor.

It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system, apparatus and module may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

In several embodiments provided in the present application, it should be understood that the disclosed communication method and apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The modules illustrated as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed over a plurality of network elements. 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 module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module.

The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored on a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or contributing part or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present application. The foregoing computer-readable storage media can be any available media that can be accessed by a computer. Taking this as an example but not limited to: the computer readable medium may include random access memory (random access memory, RAM), read-only memory (ROM), electrically erasable programmable read-only memory (electrically erasable programmable read only memory, EEPROM), compact disk read-only memory (CD-ROM), universal serial bus flash disk (universal serial bus flash disk), removable hard disk, or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

The foregoing is merely specific embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any person skilled in the art may easily think about changes or substitutions within the technical scope disclosed in the embodiments of the present application, and all changes and substitutions are included in the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

A communication method, applied to a terminal device, comprising:

the method comprises the steps that a terminal device receives first information, wherein the first information is used for indicating to cancel uplink transmission of a first time domain position, and the uplink transmission comprises transmission of a demodulation reference signal (DMRS) and/or data; the first time domain position is overlapped with a first time unit, and the time domain position of a first DMRS in the first time unit is determined according to a first pattern;

the first information is also used to indicate one of:

canceling the first DMRS transmission after the first time domain position in the first time unit; or,

canceling the first DMRS transmission after the first time domain position in the first time unit, and transmitting the first DMRS according to a first pattern in a second time unit after the first time domain position, wherein the length of the second time unit is the same as that of the first time unit; or,

Transmitting the second DMRS in a second pattern by a third time unit after the first time domain position, the first time unit including the third time unit;

according to the first information, canceling DMRS transmission after the first time domain position on a first time unit; or, cancel DMRS transmission after the first time domain position on the first time unit, and send the first DMRS according to the first pattern on the second time unit according to the first information; or sending the second DMRS according to the second pattern in the third time unit according to the first information.
The method of claim 1, wherein,

the first time unit comprises K continuous fourth time units, the first pattern indicates that the first DMRS occupies a central time unit in the K second time units, and K is a positive integer; or,

the first time unit comprises K fourth time units, the first pattern indicates that the first DMRS occupies a first fourth time unit and a Kth fourth time unit in the K fourth time units, and K is a positive integer; or,

the first time unit comprises N continuous fifth time units, each fifth time unit comprises K fourth time units, the number of the continuous fourth time units included in the first time unit is M, m=k×n+1, the first pattern indicates that the first DMRS occupies the 1 st, k+1 th, 2k+1 th … and nk+1 th fourth time units in the M fourth time units, M, N, K and N are positive integers, and N is less than or equal to N; or,

The first time unit includes N fifth time units, each fifth time unit includes K consecutive fourth time units, and the first pattern indicates that the first DMRS occupies the 1 st fourth time unit in each fifth time unit, and K is a positive integer.
The method of claim 1 or 2, wherein,

the second pattern indicates that the second DMRS occupies each fourth time element of the third time elements, the third time elements including at least one fourth time element; or,

the third time unit includes K- (i+1) fourth time units, i is an index of a last fourth time unit in the first time domain position, and the second pattern is used for indicating that the second DMRS occupies at least one of the first fourth time unit, the central fourth time unit, and the last fourth time unit in the K- (i+1) fourth time units.
The method of claim 2, wherein the method further comprises:

receiving second information, the second information comprising at least one of:

indication information of the first pattern; or,

The value of K; or,

the value of N; or,

the value of M; or,

and indicating information of a redundancy version RV of the first time slot in the first time unit.
The method of any of claims 1-4, wherein the first time unit comprises a plurality of time slots, further comprising:

and determining the RV of the first time slot after the first time domain position according to the RV of the last time slot before the first time domain position.
The method as recited in claim 5, further comprising:

third information is received, the third information being used to indicate that the RV of the first time slot after the first time domain location is determined from the RV of the last time slot before the first time domain location.
The method of any one of claims 1-6, further comprising:

receiving fourth information, the fourth information being used to indicate time domain positions of a plurality of consecutive first time units, each first time unit comprising a plurality of fourth time units; the RV of the fourth time unit for each of the plurality of consecutive first time units is independently determined.
The method as recited in claim 7, further comprising:

Fifth information is received, the fifth information indicating that an RV of a fourth time unit of each of the plurality of consecutive first time units is independently determined.
The method of any one of claim 1 to 8, wherein,

the first information is carried in Downlink Control Information (DCI), wherein the DCI is terminal equipment specific control information or cell specific control information or group public control information; or,

the first information is carried in a radio resource control, RRC, message.
A method of communication, for use with a network device, comprising:

transmitting first information, wherein the first information is used for indicating to cancel the transmission of the DMRS at the first time domain position, and the uplink transmission comprises the DMRS and/or data; the first time domain position is overlapped with a first time unit, and the time domain position of a first DMRS in the first time unit is determined according to a first pattern;

the first information is also used to indicate one of:

canceling the first DMRS transmission after the first time domain position in the first time unit; or,

canceling the first DMRS transmission after the first time domain position in the first time unit, and transmitting the first DMRS according to a first pattern in a second time unit after the first time domain position, wherein the length of the second time unit is the same as that of the first time unit; or,

Transmitting the second DMRS in a second pattern by a third time unit after the first time domain position, the first time unit including the third time unit;

cancelling reception of DMRS after the first time domain position on a first time unit according to the first information; or, receiving the first DMRS transmitted according to the first pattern in a second time unit according to the first information, or receiving the second DMRS transmitted according to the second pattern in the third time unit according to the first information.
The method of claim 10, wherein,

the first time unit comprises K continuous fourth time units, the first pattern indicates that the first DMRS occupies a central time unit in the K second time units, and K is a positive integer; or,

the first time unit comprises K fourth time units, the first pattern indicates that the first DMRS occupies a first fourth time unit and a Kth fourth time unit in the K fourth time units, and K is a positive integer; or,

the first time unit comprises N continuous fifth time units, each fifth time unit comprises K fourth time units, the number of the continuous fourth time units included in the first time unit is M, m=k×n+1, the first pattern indicates that the first DMRS occupies the 1 st, k+1 th, 2k+1 th … and nk+1 th fourth time units in the M fourth time units, M, N, K and N are positive integers, and N is less than or equal to N; or,

The first time unit includes N fifth time units, each fifth time unit includes K consecutive fourth time units, and the first pattern indicates that the first DMRS occupies the 1 st fourth time unit in each fifth time unit, and K is a positive integer.
The method of claim 10 or 11, wherein,

the second pattern indicates that the second DMRS occupies each fourth time element of the third time elements, the third time elements including at least one fourth time element; or,

the third time unit includes K- (i+1) fourth time units, i is an index of a last fourth time unit in the first time domain position, and the second pattern is used for indicating that the second DMRS occupies at least one of the first fourth time unit, the central fourth time unit, and the last fourth time unit in the K- (i+1) fourth time units.
The method of claim 11, wherein the method further comprises:

transmitting second information, the second information comprising at least one of:

indication information of the first pattern; or,

The value of K; or,

the value of N; or,

the value of M; or,

indication information of RV of the first time slot in the first time unit.
The method of any of claims 10-13, wherein the first time unit comprises a plurality of time slots, further comprising:

and transmitting third information, wherein the third information is used for indicating the RV of the first time slot after the first time domain position according to the RV of the last time slot before the first time domain position.
The method of any one of claims 10-14, further comprising:

transmitting fourth information indicating time domain positions of a plurality of consecutive first time units, each first time unit including a plurality of fourth time units

And transmitting fifth information, wherein the fifth information is used for indicating that RV of a fourth time unit of each first time unit in the plurality of continuous first time units is independently determined.
The method of any one of claim 10 to 15, wherein,

the first information is carried in DCI, wherein the DCI is terminal equipment specific control information or cell specific control information or group public control information; or,

The first information is carried in an RRC message.
A communication device, comprising:

a memory for storing instructions;

a processor for invoking and executing the instructions from the memory to cause the communication device to perform the method of any of claims 1-9.
A communication device, comprising:

a memory for storing instructions;

a processor for invoking and executing the instructions from the memory to cause the communication device to perform the method of any of claims 10-16.
A communication system comprising the communication apparatus of claims 17 and 18.
A computer readable storage medium having instructions stored therein which, when invoked for execution on a computer, cause the computer to perform the method of any one of claims 1-16.
A computer program product, characterized in that the computer program product, when run on a computer, causes the computer to perform the method according to any of claims 1-16.
A circuit coupled to a memory for reading and executing a program stored in the memory to perform the method of any of claims 1-16.