CN114070449A

CN114070449A - Uplink transmission method and related device

Info

Publication number: CN114070449A
Application number: CN202011128974.XA
Authority: CN
Inventors: 余雅威; 余健; 郭志恒; 周国华; 葛莉玮; 汪少波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-08-01
Filing date: 2020-10-20
Publication date: 2022-02-18

Abstract

The embodiment of the application provides an uplink transmission method and a related device, wherein the method comprises the following steps: the terminal equipment sends an uplink signal containing a zero power reference signal to the network equipment; and in the time frequency resources used for sending the uplink signals, the transmitting power of the uplink signals within the range of the time frequency resources of the zero-power reference signals is zero. The technical scheme provided by the application can enable the base station to measure the uplink transmission interference, and improve the performance of data transmission from the terminal equipment to the network equipment.

Description

Uplink transmission method and related device

Technical Field

The present application relates to the field of data transmission, and in particular, to an uplink transmission method and a related apparatus.

Background

In a mobile communication network, during data transmission between a terminal device and a network device, interference caused by data transmission from the terminal device of neighboring cells may be received, which may cause transmission failure because the interference is too large to allow a receiving end to correctly demodulate a received signal during data transmission.

Disclosure of Invention

The application provides an uplink transmission method and a related device, which can improve the transmission success rate of data transmission from a terminal device to a network device.

In a first aspect, an embodiment of the present application provides an uplink transmission method, including:

the terminal equipment sends an uplink signal containing a zero power reference signal to the network equipment;

and in the time-frequency resources used for sending the uplink signals, the transmission power of the uplink signals within the range of the time-frequency resources of the zero-power reference signals is zero.

By setting the zero power reference signal in the uplink signal by the terminal device, because the signal received on the time-frequency resource of the zero power reference signal can reflect the interference brought by the data transmission in the adjacent cells around the serving cell of the terminal device to the uplink data transmission of the terminal device, the network device can estimate the interference of the adjacent cells according to the uplink signal received in the range of the time-frequency resource of the zero power reference signal and eliminate the interference from the received signal, thereby improving the demodulation performance of the uplink data and improving the transmission capability of the uplink data.

In a possible implementation manner, before the terminal device sends an uplink signal including a zero power reference to a network device, the method includes:

generating the uplink signal according to the configuration information of the zero-power reference signal; wherein the configuration information is used to indicate a pattern of time-frequency resources of the zero-power reference signal.

In a possible implementation manner, before generating the uplink signal according to the configuration information of the zero-power reference signal, the method includes:

and receiving the configuration information sent by the network equipment.

In a possible implementation manner, the uplink signal further includes a modulation and demodulation reference signal DMRS, and a time-frequency resource of the zero-power reference signal is not overlapped with a time-frequency resource of the DMRS.

In a possible implementation manner, the zero power reference signal is a zero power reference signal corresponding to a serving cell of the terminal device; and the time-frequency resources of the zero-power reference signals corresponding to the serving cell and the adjacent cells of the serving cell are not overlapped with each other.

In a possible implementation manner, in one time-frequency resource unit for transmitting the uplink signal, the number of the zero-power reference signals is 1 or more;

wherein the time domain of the time-frequency resource unit comprises: one slot, or one mini-slot, or at least two time domain symbols.

In one possible implementation, the number of REs occupied by each zero-power reference signal is 1 or more.

In one possible implementation manner, the configuration information of the zero power reference information includes at least one of the following information:

the number of the zero power reference signals in any time-frequency resource unit for transmitting the uplink signal,

the number of Resource Elements (REs) occupied by each zero-power reference signal;

each of the zero-power reference signals allows a starting time domain symbol of an occupied time domain symbol range;

when the number of REs occupied by each zero power reference signal is 2, the distribution mode of the time domain symbols where the 2 REs are located;

at least one subcarrier where each zero power reference signal is located;

when the number of REs occupied by each zero power reference signal is 2, the subcarrier offset between a first subcarrier and a second subcarrier where the 2 REs are located;

when the number of the zero power reference signals is 2, indicating whether the subcarriers where the 2 zero power reference signals are located are the same;

and when the subcarriers in which the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers in which the 2 zero-power reference signals are located is obtained.

In a possible implementation manner, when the number of REs occupied by each zero-power reference signal is 1, the time domain symbol in which the 1 RE is located is a starting time domain symbol of a time domain symbol range allowed to be occupied by each zero-power reference signal;

when the number of REs occupied by each zero-power reference information number is 2, the time domain symbol where the 2 REs are located is at least one time domain symbol in 2 time domain symbols starting from the starting time domain symbol;

wherein the uplink signal further comprises a DMRS; each of the zero-power reference signals allows the starting time domain symbol of the occupied time domain symbol to be any one of: the 1 st time domain symbol after the time domain symbol where the time frequency resource of the DMRS is located, or the most middle time domain symbol in the time frequency resource unit; the most middle time domain symbol is different from the time domain symbol where the time frequency resource of the DMRS is located, or the 2 nd time domain symbol after the 1 st time domain symbol where the time frequency resource of the DMRS is located.

In a possible implementation manner, the number of REs occupied by the zero-power reference signal of the serving cell of the terminal device is 1, and the number of REs occupied by the zero-power reference signal of the neighboring cell of the serving cell of the terminal device is 1;

the first subcarriers corresponding to the serving cell and the neighboring cells of the serving cell are different, and the first subcarrier is a subcarrier where a zero power reference signal is located.

In a possible implementation manner, the number of REs occupied by the zero-power reference signal corresponding to a target cell is 2, where the target cell is any one of a serving cell of the terminal device and an adjacent cell of the serving cell;

a first subcarrier and a second subcarrier corresponding to the target cell are not adjacent to each other, and the first subcarrier and the second subcarrier are subcarriers where the 2 REs corresponding to the target cell are located;

and the subcarriers occupied by the zero-power reference signals corresponding to different target cells in the same time domain symbol are different.

In a possible implementation manner, the time-frequency resource unit for transmitting the uplink signal includes 12 subcarriers; a frequency domain offset FreqOffset of a first subcarrier corresponding to any target cell among the serving cell and neighboring cells of the serving cell is determined according to a cell identification CID of the target cell,

when mod (CID, Q) < 6, FreqOffset ═ mod (CID, Q) × 2;

when mod (CID, Q) is 6, FreqOffset is 11;

wherein mod represents a remainder operation, Q is a total cell number of the serving cell and a cell adjacent to the serving cell, and Q is an integer greater than or equal to 2 and less than 7; CID is an integer greater than or equal to 0.

In one possible implementation, the number of REs occupied by each zero-power reference signal is 2;

the distribution mode of the time domain symbols where the 2 REs are located is as follows: a first distribution mode, or a second distribution mode;

wherein the first distribution manner is used to indicate that the 2 REs are located in 2 consecutive time domain symbols;

the second distribution mode is used to indicate that the 2 REs are located in 1 time domain symbol.

In a possible implementation manner, when the distribution manner of the time domain symbols in which the 2 REs are located is the second distribution manner, the time domain symbols in which the 2 REs are located are determined according to the cell identifier of the serving cell of the terminal device; wherein,

when CID multiplied by 2T is less than SumCR, the time domain symbol where the 2 REs are located is the initial time domain symbol;

when SumCR is not more than CID multiplied by 2T and less than 2 multiplied by SumCR, the time domain symbol where the 2 REs are located is the 1 st time domain symbol after the initial time domain symbol;

wherein, CID is the cell identifier, SumCR is the total number of subcarriers of one time-frequency resource unit, T is the number of subcarrier intervals, and T is an integer greater than or equal to 1 or less than or equal to 6. T is less than or equal to SumCR/Q.

In a possible implementation manner, when the distribution manner of the time domain symbols where the 2 REs are located is the first distribution manner, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located is 1, 3, or 5; or,

and when the distribution mode of the time domain symbols where the 2 REs are located is the second distribution mode, the subcarrier offset between the first subcarrier and the second subcarrier where the 2 REs are located is 2, 4 or 6.

In a possible implementation manner, in one time-frequency resource unit for transmitting the uplink signal, the number of the zero power reference signals is 2;

the subcarriers in which the time frequency resources of the 2 zero power reference signals are located are the same or different.

In a possible implementation manner, when the subcarriers in which the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers in which the 2 zero-power reference signals are located is 1, 3, or 5.

In one possible implementation, the time-frequency resource of the zero-power reference signal includes: p REs located on a time domain symbol to be processed in one time-frequency resource unit for transmitting the uplink signal;

the frequency domain of the time frequency resource unit comprises 12 subcarriers; the subcarriers where the P REs are located are { i₁，i₂，...，i_PAnd the other subcarriers except the subcarriers described by the P REs in the 12 subcarriers are { j }₁，j₂，…，j_12-P}; wherein, P is an integer of more than or equal to 1 and less than 12;

the method further comprises the following steps:

acquiring first data to be transmitted, wherein the first data are k-P data segments x₁，x₂，...，x_k-PEach RE is used for carrying data in 1 data segment;

transforming the moment W according to the first data and DFT_12×kDetermining second data, wherein the second data x_k-p+1，...，x_kSatisfies the following conditions:

forming the first data and the second data into time domain data x, wherein x ═ x (x)₁，x₂，...x_k)^T；

According to the DFT transformation moment W_12×kPerforming DFT on the time domain data x to obtain frequency domain data y; wherein y ═ y₁，y₂，y₃，...，y₈，y₉，y₁₀，y₁₁，y₁₂)^TThe uplink signals on the P REs

Are all 0;

taking the frequency domain data y as an uplink signal in a time domain symbol to be processed;

and k is the number of time domain symbols in the time frequency resource unit, and k is greater than p.

In one possible implementation manner, the configuration information of the zero-power reference signal includes at least one of the following information:

in any time-frequency resource unit used for sending the uplink signal, whether a zero-power reference signal supports configuration indication of Code Division Multiplexing (CDM) group or not; wherein, whether the zero-power reference signal supports CDM group configuration indication is used for indicating whether to configure the time-frequency resource of the zero-power reference signal according to the time-frequency resource of the DMRS in the uplink signal or the CDM configuration type corresponding to the DMRS;

a CDM configuration type of the DMRS; wherein the CDM configuration type of the DMRS comprises: a first CDM type, a second CDM type, a third CDM type; the time-frequency resources of the DMRS are determined from a group resource set according to CDM group IDs corresponding to the DMRS, wherein the group resource set comprises a plurality of group resources, different CDM group IDs correspond to different group resources in the group resource set, and time-domain symbols in which at least two group resources in the plurality of group resources are located are different;

supporting the configuration mode of a zero power reference signal of CDM group; wherein, the configuration mode comprises: a first configuration mode and a second configuration mode; the RE occupied by the zero-power reference signal adopting the first configuration mode is the same as the subcarrier where the RE occupied by the DMRS is located; the sub-carrier where the zero-power reference signal in the second configuration mode is located is a set of all sub-carriers where all CDM group DMRSs corresponding to CDM configuration types are located, where the sub-carriers where all CDM group DMRSs are located are part of sub-carriers in a time-frequency resource unit for transmitting uplink signals;

a starting time domain symbol occupied by the zero-power reference signal of each CDM group;

the number of time domain symbols occupied by the zero-power reference signal of each CDM group;

the number of the group resource units in each group resource.

In a possible implementation manner, the subcarrier in which the zero-power reference signal is located is a part of subcarriers of the time-frequency resource unit for transmitting the uplink signal.

In one possible implementation, the uplink signal further includes a DMRS; the subcarrier where the DMRS is located is determined according to a CDM group corresponding to the DMRS;

the time domain symbols and/or subcarriers where the DMRSs of different CDM groups are located are different;

and the time frequency resource where the zero power reference signal is positioned is determined according to the time frequency resource of the DMRS or the CDM configuration type.

In a possible implementation manner, the configuration manner of the zero-power reference signal supporting CDM group is a first configuration manner;

a CDM configuration type of the DMRS is a first CDM type or a second CDM type; the subcarriers in which DMRSs corresponding to different group IDs are located are different;

and the identifier of the subcarrier where the zero-power reference signal is located is the same as the identifier of the subcarrier where the DMRS of the uplink signal is located.

In a possible implementation manner, the configuration manner of the zero-power reference signal supporting CDM group is a second configuration manner;

the subcarrier where the zero-power reference signal is located comprises subcarriers where all CDM group DMRSs corresponding to CDM configuration types are located;

and the initial time domain symbol where the RE occupied by the zero-power reference signal is located is the 1 st time domain symbol after the time domain symbol where the DMRS is located.

a CDM configuration type of the DMRS is a third CDM type;

the time frequency resource of the zero power reference signal comprises a set of time frequency resources of all CDM group DMRSs corresponding to CDM configuration types, wherein the set of time frequency resources of the DMRS is used for removing the time frequency resource of the DMRS of the uplink signal, the time frequency resource of the DMRS is determined from a group resource set according to CDM group IDs corresponding to the DMRS, the group resource set comprises a plurality of group resources, different CDM group IDs correspond to different group resources in the group resource set, and time domain symbols of at least two group resources in the group resources are different; all subcarriers in which DMRSs of all CDM groups are located are part of subcarriers in a time-frequency resource unit for transmitting uplink signals.

Wherein, the time domain symbols where the DMRSs corresponding to the at least two CDM groups supported by the third CDM type are located are different.

In one possible implementation, the CDM configuration type of the DMRS is a first CDM type or a second CDM type;

when the CDM configuration type of the DMRS is a first CDM type, the subcarrier in which the zero-power reference signal is located contains all subcarriers meeting a first condition, wherein the first condition is that the remainder of subcarrier offset modulo 2 is equal to all subcarriers of the CDM group ID;

when the CDM configuration type of the DMRS is a second CDM type, the subcarrier in which the zero-power reference signal is located includes all subcarriers satisfying a second condition that a remainder of subcarrier offset modulo 6 is equal to all subcarriers of the CDM group ID × 2 or the CDM group ID × 2+ 1.

In one possible implementation, each group resource includes at least two group resource units;

the time domain symbols occupied by the at least two group resource units are the same, and the subcarriers occupied by the at least two group resource units are different;

each group resource unit occupies at least one time domain symbol;

each group resource unit occupies at least one subcarrier;

and all subcarriers in which the group resource units corresponding to all CDM groups are located are partial subcarriers in the time-frequency resource units.

In a possible implementation manner, the time-frequency resource unit for transmitting the uplink signal including the DMRS is a resource block RB, and any RB includes 2 or 3 or 4 group resource units;

each group resource unit occupies 2 continuous time domain symbols;

each group resource unit occupies 2 continuous sub-carriers;

the number of time domain symbols occupied by all group resource units of CDM group ID is 6;

the number of subcarriers occupied by the group resource elements of all CDM group IDs is 4.

In a possible implementation manner, in a time-frequency resource unit for transmitting the uplink signal, a difference value between transmission powers of different time-domain symbols is smaller than a preset deviation power threshold.

In a possible implementation manner, in the time-frequency resource for transmitting the uplink signal, the transmission power of different time-domain symbols is equal.

In a possible implementation manner, the time-frequency resource unit for transmitting the uplink signal is a resource block RB; in any target time domain symbol containing REs occupied by the zero-power reference signal, the transmission power of each effective RE is the transmission power of the target time domain symbol divided by the number of effective REs;

wherein the effective REs are other REs except for the REs occupied by the zero-power reference signal on the target time domain symbol.

In a possible implementation manner, REs except for REs occupied by the zero power reference signal on a target time domain symbol where the zero power reference signal is located are data REs for carrying data.

In a second aspect, an embodiment of the present application provides an uplink transmission method, including:

the method comprises the steps that network equipment receives an uplink signal which is sent by terminal equipment and contains a zero-power reference signal, wherein in time-frequency resources used for sending the uplink signal, the transmitting power of the uplink signal in the range of the time-frequency resources of the zero-power reference signal is zero;

performing channel estimation according to the uplink signal received in the time-frequency resource of the zero-power reference signal;

and demodulating the received uplink signal according to the result of the channel estimation.

The network device may be a base station, among others.

In a possible implementation manner, before the receiving, according to the network device, an uplink signal including a zero power reference signal, the method includes:

and sending configuration information to the terminal equipment, wherein the configuration information is used for indicating a pattern of time-frequency resources of the zero-power reference signal.

In a possible implementation manner, the performing channel estimation according to the uplink signal received in the time-frequency resource of the zero-power reference signal includes:

and acquiring the uplink signal received in the time frequency resource of the zero-power reference signal according to the configuration information.

In a possible implementation manner, the zero power reference signal is a zero power reference signal corresponding to a serving cell of the terminal device; and the time-frequency resources of the zero-power reference signals corresponding to each cell in a cell group consisting of the serving cell and the adjacent cells of the serving cell are not overlapped with each other.

at least one subcarrier where each zero power reference signal is located;

wherein the uplink signal further comprises a DMRS; each of the zero-power reference signals allows the starting time domain symbol of the occupied time domain symbol to be any one of:

a 1 st time domain symbol after a time domain symbol in which the time frequency resource of the DMRS is located, or,

the most middle time domain symbol in the time frequency resource unit; wherein the most middle time domain symbol is different from the time domain symbol in which the time frequency resource of the DMRS is located, or,

and a 2 nd time domain symbol after the 1 st time domain symbol where the time frequency resources of the DMRS are located.

when mod (CID, Q) < 6, FreqOffset ═ mod (CID, Q) × 2;

when mod (CID, Q) is 6, FreqOffset is 11;

When CID × 2T is larger than or equal to 2 × SumCR, the distribution mode of the time domain symbols where the 2 REs are located is the first distribution mode.

wherein, CID is the cell identifier, SumCR is the total number of subcarriers of one time-frequency resource unit, T is the number of subcarrier intervals, and T is an integer greater than or equal to 1 or less than or equal to 6.

In a possible implementation manner, in one time-frequency resource unit for transmitting the uplink signal, the number of the zero power reference signals is 2; the subcarriers in which the time frequency resources of the 2 zero power reference signals are located are the same or different.

the number of the group resource units in each group resource.

a CDM configuration type of the DMRS is a third CDM type;

The time domain symbols where the DMRSs corresponding to the at least two CDM groups supported by the third CDM type are located are different;

when the CDM configuration type of the DMRS is a second CDM type, the subcarrier in which the zero-power reference signal is located includes all subcarriers satisfying a second condition that a remainder of subcarrier offset modulo 6 is equal to all subcarriers of the CDM group ID × 2 and the CDM group ID × 2+ 1.

each group resource unit occupies at least one time domain symbol; each group resource unit occupies at least one subcarrier.

each group resource unit occupies 2 continuous time domain symbols;

each group resource unit occupies 2 continuous sub-carriers;

In a third aspect, an embodiment of the present application further provides a method for transmitting a reference signal, including:

terminal equipment sends DMRS to network equipment;

the time-frequency resource of the DMRS is determined from a group resource set according to a first identifier corresponding to the terminal device, wherein the group resource set comprises a plurality of group resources, different first identifiers correspond to different group resources in the group resource set, and time-domain symbols in which at least two group resources in the plurality of group resources are located are different.

The DMRS may be used by a network device to perform channel estimation on an uplink signal including the DMRS, remove interference, demodulate data carried in the uplink signal, and the like.

In a possible implementation manner, the first identifier is an identifier of a CDM group corresponding to the terminal device.

In a possible implementation manner, the time domain symbol and/or subcarrier where the DMRS is located is determined according to a CDM group identifier and a CDM configuration type corresponding to the terminal device;

when the CDM configuration type is a third CDM type, a time domain symbol in which the DMRS corresponding to a first CDM group is located is different from a time domain symbol in which the DMRS corresponding to a second CDM group is located, where the first CDM group is a CDM group corresponding to the terminal device, and the second CDM group is at least one other CDM group of at least two CDM groups supported by the third CDM type and including the first CDM group.

each group resource unit occupies 2 continuous time domain symbols;

each group resource unit occupies 2 continuous sub-carriers;

In a fourth aspect, an embodiment of the present application further provides a method for transmitting a reference signal, including:

the method comprises the steps that network equipment receives a DMRS sent by terminal equipment;

And all the subcarriers in which the group resource set is located are partial subcarriers in the time-frequency resource unit.

each group resource unit occupies 2 continuous time domain symbols;

each group resource unit occupies 2 continuous sub-carriers;

In another aspect, an embodiment of the present application further provides a communication apparatus on a terminal device side, where the apparatus may be a terminal device, and may also be a chip in the terminal device. The apparatus has the function of implementing any one of the above first aspect relating to the terminal device. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions.

In a possible implementation manner, when the apparatus is a terminal device, the terminal device includes: a processor and a transceiver, the processor being configured to support a terminal device to perform the respective functions of the above-described method. The transceiver is used for supporting communication between the terminal device and the network device, and transmitting information or instructions involved in the method to the network device. Optionally, the terminal device may further comprise a memory for coupling with the processor, which stores program instructions and data necessary for the terminal device.

In one possible implementation, the apparatus includes: a processor, baseband circuitry, radio frequency circuitry, and an antenna. The processor is used for realizing control of functions of each circuit part, the baseband circuit is used for generating various signaling and messages, such as RRC messages and the like, and the signaling and messages are transmitted to the network equipment through the antenna after being subjected to analog conversion, filtering, amplification, up-conversion and the like through the radio frequency circuit. Optionally, the apparatus may further include a memory that stores program instructions and data necessary for the terminal device.

In one possible implementation, the apparatus may include a processor and a modem, the processor may be configured to instruct or operate a system to implement control of the functions of the terminal device, and the modem may encapsulate, encode, demodulate, equalize, etc. data according to a protocol to generate a radio frame to support the terminal device to perform the corresponding functions in the first aspect.

In one possible implementation, when the apparatus is a chip in a terminal device, the chip includes: the processing module may be, for example, a processor, and the processing module may be, for example, the processor is configured to generate various messages and signaling, encapsulate the various messages according to a protocol, and then perform processing such as encoding, modulation, amplification, and the like, the processor may also be configured to demodulate, decode, and decapsulate to obtain the signaling and the messages, and the transceiver module may be, for example, an input/output interface, a pin, a circuit, and the like on the chip. The processing module can execute the computer execution instructions stored in the storage unit to support the terminal device to execute the corresponding functions in the method. Optionally, the storage unit may be a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the terminal device, such as a read-only memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.

In one possible implementation, the apparatus includes a processor, which is configured to couple with a memory, and to read instructions in the memory and execute the method according to any one of the first aspect above. The memory may be located within the processor or external to the processor. In an example, the memory is used to store a computer program, and the processor is used to invoke and run the computer program from the memory, so that the communication device performs the method of the first aspect and its various possible implementations.

In another aspect, an embodiment of the present application further provides a communication apparatus on a terminal device side, where the apparatus may be a network device, or may be a chip in the network device. The apparatus has the function of implementing any of the second, third, sixth to eighth to twenty aspects described above relating to the network device. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more elements corresponding to the functions described above.

In a possible implementation manner, when the apparatus is a network device, the network device includes: a processor and a transceiver, the processor being configured to support a network device to perform the respective functions of the above-described method. The transceiver is used for supporting communication between the network device and the terminal device, and transmitting information or instructions related to the method to the terminal device. Optionally, the network device may also include a memory, coupled to the processor, that stores program instructions and data necessary for the network device.

In one possible implementation, the apparatus includes: a processor, baseband circuitry, radio frequency circuitry, and an antenna. The processor is used for realizing control of functions of each circuit part, and the baseband circuit is used for generating various signaling and messages, such as RRC messages, and sending the signaling and messages to the terminal equipment through the antenna after analog conversion, filtering, amplification, up-conversion and the like are carried out through the radio frequency circuit. Optionally, the apparatus may also include a memory that stores program instructions and data necessary for the network device.

In one possible implementation, the apparatus may include a processor and a modem, the processor may be configured to instruct or operate a system to implement control of the functions of the network device, and the modem may encapsulate, encode, demodulate, equalize, etc. data according to a protocol to generate the wireless frame, so as to support the network device to perform the corresponding functions in the second aspect.

In one possible implementation, when the apparatus is a chip in a network device, the chip includes: the processing module may be, for example, a processor, and the processing module may be, for example, the processor is configured to generate various messages and signaling, encapsulate the various messages according to a protocol, and then perform processing such as encoding, modulation, amplification, and the like, the processor may also be configured to demodulate, decode, and decapsulate to obtain the signaling and the messages, and the transceiver module may be, for example, an input/output interface, a pin, a circuit, and the like on the chip. The processing module can execute the computer execution instructions stored in the storage unit to support the network device to execute the corresponding functions in the above method. Optionally, the storage unit may be a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the network device, such as a read-only memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.

In one possible implementation, the apparatus includes a processor, which is configured to couple with a memory, and to read instructions in the memory and execute the method according to any one of the second aspect. The memory may be located within the processor, may be located external to the processor, or may be located external to the device.

In yet another aspect, the present application provides a computer-readable storage medium having instructions stored therein, the instructions executable by one or more processors on a processing circuit. When run on a computer, cause the computer to perform the method of any of the first to second aspects described above, or any possible implementation thereof.

In a further aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the first to second aspects above, or any possible implementation thereof.

In a further aspect, the present application provides a chip system comprising a processor for supporting performing the method of any one of the first to second aspects above or any possible implementation thereof, such as generating or processing data and/or information referred to in the above aspects. In one possible design, the system-on-chip further includes a memory for storing program instructions and data necessary for the data transmission device. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

In yet another aspect, an embodiment of the present application provides a communication system, which includes at least one terminal device related to the above aspect, and a network device.

Drawings

Fig. 1 is a first schematic diagram of an application scenario according to an embodiment of the present application;

fig. 2 is a first interaction flowchart of an uplink transmission method according to an embodiment of the present application;

fig. 3A to 3G are schematic diagrams one to seven illustrating patterns of a zero power reference signal according to an embodiment of the present disclosure;

fig. 4 is a first schematic distribution diagram of time-frequency resources of a zero-power reference signal in a multi-cell scenario provided in the embodiment of the present application;

fig. 5A to fig. 7B are schematic diagrams of patterns of a zero power reference signal in a multi-cell scenario according to an embodiment of the present application;

fig. 8A is a schematic distribution diagram of time-frequency resources of a zero-power reference signal in a multi-cell scenario according to an embodiment of the present application;

fig. 8B is a schematic distribution diagram of time-frequency resources of a zero-power reference signal in a multi-cell scenario provided in the embodiment of the present application;

fig. 9A to 9D are nine to twelve schematic diagrams of patterns of a zero power reference signal in a multi-cell scenario according to an embodiment of the present application;

FIG. 10 is a schematic diagram of a mapping process according to an embodiment of the present application;

fig. 11 is a set of schematic diagrams of subcarriers in which DMRSs configured based on CDM group are located;

fig. 12 to fig. 15 are schematic diagrams of patterns of a zero power reference signal configured in a first configuration according to an embodiment of the present application;

fig. 16 to fig. 22 are schematic diagrams of patterns of a zero-power reference signal configured in a second configuration according to an embodiment of the present application;

fig. 23 is a first schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 24 is a second schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 25 is a first schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 26 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

Example one

The embodiment of the application provides an uplink transmission method which can be applied to a communication network. Several communication devices may be included in a communication network. In an example, a communication network may include a network device and a terminal device (UE), where the network device may receive an uplink signal transmitted by one or more terminal devices on a pre-planned time-frequency resource. When an uplink signal transmitted from a terminal device to a network device is interfered, the demodulation performance of the network device may be degraded.

Fig. 1 is a first schematic diagram of an application scenario related to an embodiment of the present application. As shown in fig. 1, part of UEs in the network may be simultaneously in the coverage of multiple cells gNB, and at this time, there may be aliasing and interference of transmission information in uplink and downlink transmissions of different UEs. For example, when a signal transmitted in uplink by the left cell UE reaches the left base station in fig. 1, the left base station may also receive an uplink signal sent by the adjacent right cell UE to the right base station in fig. 1, and at this time, the signal of the left cell UE may be interfered, that is, a large interference signal is aliased in the received signal of the left base station, which may result in that the signal of the left cell UE cannot be accurately demodulated.

The uplink transmission method provided in the embodiments of the present application is described below by taking a network device as a base station as an example. In this embodiment of the present application, the network device may be a base station in an LTE communication system, or may also be a base station (base station, or g Node B, abbreviated as gNB) in a New Radio Access Technology (NR) system.

Fig. 2 is an interaction flow diagram of an uplink transmission method according to an embodiment of the present application. As shown in fig. 2, the steps of the embodiment of the present application may include:

s101, a terminal device sends an uplink signal containing a zero-power reference signal to a base station, wherein in time-frequency resources used for sending the uplink signal, the transmission power of the uplink signal in the range of the time-frequency resources of the zero-power reference signal is zero.

Wherein, a Zero Power Channel State Information Reference Signal (ZP CSI-RS) may be used for uplink interference measurement. Since no data is actually transmitted on the time-frequency resources of the zero-power reference signal, it may also be referred to as mutes RE.

S102, the base station carries out interference estimation according to the uplink signal received in the time frequency resource of the zero power reference signal

The base station may estimate the neighboring cell interference according to the uplink signal received in the time-frequency resource of the zero-power reference signal.

S103, the base station demodulates the received uplink signal according to the result of the channel estimation.

The base station may perform interference suppression and data demodulation on the received uplink signal according to the result of the neighboring cell interference estimation.

In the embodiment of the present application, for example, the terminal device may send an uplink signal in a physical uplink shared channel PUSCH. In an example, the time-frequency resource used for transmitting the uplink signal may be a first resource in a PUSCH, and the first resource may include a second resource corresponding to a zero-power reference signal. When the terminal device transmits the uplink signal on the first resource, the transmission power of the uplink signal in the range of the second resource may be made zero by configuration.

In this embodiment of the application, before step S101, the method may further include:

s201, the base station sends configuration information of the zero power reference signal to the terminal equipment.

Wherein the configuration information is used to identify a range of time-frequency resources of the zero-power reference signal.

In this embodiment of the present application, the gNB may send the configuration Information to the UE through a radio resource Control RRC message or Downlink Control Information (DCI) signaling, for example, a new field may be directly added to the message or a redundant state of an existing field may be utilized, or the UE may be indirectly notified through a parameter carrying whether to configure the zero power reference signal. In an example, whether the zero power reference signal is enabled may be configured by RRC signaling muterereestimateflag ═ {0,1 }.

In this embodiment, the base station may instruct the terminal device to configure a zero power reference signal in the uplink signal when the base station performs interference estimation according to other signals and finds that the uplink interference measurement result is greater than a preset starting measurement threshold. Illustratively, the other signals may be Sounding Reference Signals (SRS), modulation and Demodulation Reference signals (DMRS), and the uplink interference measurement result may be at least one parameter such as RSRP, SINR, and the like.

And S202, the terminal equipment generates an uplink signal according to the configuration information.

It should be noted that S201 is not a necessary step in the embodiments of the present application. In this embodiment, the terminal device may further obtain configuration information of the zero-power reference signal in other manners. In an alternative embodiment, the terminal device may pre-configure configuration information of the zero-power reference signal. For example, the terminal device may be configured with a determining method of the time-frequency resource of the zero-power reference signal when the terminal device leaves the factory, and in an example, the terminal device may be configured with a determining method of determining the range of the time-frequency resource of the zero-power reference signal according to the cell identifier of the serving cell in advance. Correspondingly, the base station may also be configured in advance when leaving the factory or acquire configuration information from the network management device, so as to ensure that the ranges of the time-frequency resources of the zero-power reference signal determined by the configuration information of the terminal device and the base station are consistent.

In this embodiment, for example, the time-frequency Resource for sending the uplink signal may include at least one Resource Block (RB), and the configuration information may be used to identify at least one of the following information: in any RB for transmitting an uplink signal, the number of REs occupied by the zero-power reference signal, the subcarrier identity where the zero-power reference signal is located, and the position of the corresponding time domain symbol.

In an example, the uplink signal may further include a modulation and demodulation reference signal DMRS, and the configuration information may include: and the offset of the time domain symbol where the time frequency resource of the zero power reference signal is located relative to the time domain symbol where the time frequency resource of the DMRS is located. The zero-power reference signal may be disposed in close proximity to the DMRS, or may be disposed at a position far from the DMRS. When the time domain symbol of the zero power reference signal is located in the time domain symbol of the middle position of the time frequency resource of the uplink signal, the signal received in the time frequency resource of the zero power reference signal can more accurately reflect the interference of the channel for receiving the uplink signal, which is changed along with the time domain. When the time domain symbol where the time frequency resource of the zero power reference signal is located at the position, close to the DMRS, of the uplink signal, the time frequency resource of the zero power reference signal is located at the position, closer to the front time domain, of the time frequency resource of the uplink signal, and the base station can estimate the channel earlier and improve the demodulation processing rate. In other embodiments of the present application, the distribution of time-frequency resources of zero-power reference signals will be described in detail.

In this embodiment, in step S102, the base station may obtain, according to the range of the time-frequency resource of the zero-power reference signal identified by the configuration information, the uplink signal received in the time-frequency resource of the zero-power reference signal from the received uplink signal. Taking an RB in the time-frequency resource for transmitting the uplink signal as an example, the base station may obtain the uplink signal received in the time-frequency resource of the zero-power reference signal, and estimate a channel corresponding to the entire RB. Then, in step S103, the base station may perform interference signal and noise removal processing on uplink signals received in other REs except for the RE occupied by the zero power reference signal in each RB according to a result of the channel estimation, and then demodulate the uplink signals after the interference signal and noise removal processing.

In practical application, in an uplink transmission process, a signal of a target UE received by the gNB may be interfered by transmission signals of other UEs in an adjacent cell, and particularly, the interference to an edge UE in the cell is more serious, because a received signal that a signal transmitted by an edge user reaches the gNB after long-distance transmission loss is very weak, which results in a large interference influence.

The embodiment of the application can solve the problem that interference measurement is not accurate enough during uplink transmission, improve uplink interference measurement and uplink performance, and improve uplink coverage capability, and interference measurement capability of UE located in the edge area of a cell is improved.

In the embodiment of the application, the terminal device sends the uplink signal containing the zero-power reference signal to the base station, and actually does not send the signal in the time-frequency resource of the zero-power reference signal, so that when the base station receives the uplink signal in the time-frequency resource of the uplink signal, the signal received in the time-frequency resource range of the zero-power reference signal is actually generated by interference.

Example two

The embodiments of the present application provide various alternative implementations of the range of time-frequency resources of zero-power reference signals. The following illustrates an embodiment of a time-frequency resource for a zero-power reference signal.

In this embodiment, for example, the time-frequency resource for transmitting the Uplink signal may include at least one time-frequency resource unit in a Physical Uplink Shared Channel (PUSCH). Each time-frequency resource unit may include a plurality of resource elements REs. The time domain of each time-frequency resource unit may include: one slot, or one mini slot, or at least two time domain symbols. The frequency domain for each time-frequency resource element may include multiple subcarriers, which may be 12 subcarriers in one example.

In an alternative embodiment, the time-frequency resource unit may be a resource block RB. In an example, the time domain of each RB may include 14 time domain symbols of one slot, the frequency domain of each RB may include 12 subcarriers, and each RB may include 12 × 14 REs. In this embodiment of the present application, the time-frequency Resource unit may also be a Physical Resource Block (PRB).

It should be noted that, for example, a time domain offset of any s-th time domain symbol in the time-frequency resource unit with respect to a 1 st time domain symbol in the time-frequency resource unit is s-1, and a frequency domain offset of any f-th subcarrier in the time-frequency resource unit with respect to a 1 st subcarrier in the time-frequency resource unit is f-1. For example, the time domain offset of the 1 st time domain symbol in the time frequency resource unit is 0, the time domain offset of the 2 nd time domain symbol is 1, the frequency domain offset of the 1 st subcarrier is 0, and the frequency domain offset of the 3 rd subcarrier is 2.

In this embodiment of the present application, a set of REs occupied by a zero power reference signal in each time-frequency resource unit may be referred to as a pattern (pattern) of the zero power reference signal. Embodiments of the present application will provide various implementations of patterns for zero power reference signals.

In the embodiment of the present application, the configuration information of the zero power reference signal may be used to indicate a pattern of the zero power reference signal in each time-frequency resource unit. For example, the configuration information of the zero power reference information includes at least one of the following information:

at least one subcarrier where each zero power reference signal is located;

when the number of REs occupied by each zero power reference signal is 2, the subcarrier spacing amount between a first subcarrier and a second subcarrier where the 2 REs are located;

and when the subcarriers in which the 2 zero-power reference signals are located are different, the subcarrier spacing amount between the subcarriers in which the 2 zero-power reference signals are located is determined.

Table 1 is a set of illustrations of various parameters and value ranges of the various parameters in the configuration information.

TABLE 1

Wherein Single represents 1, Double represents 2.

In the embodiment of the present application, the starting time domain symbol of the time domain symbol allowed to be occupied by the zero power reference signal may be a time domain offset relative to the time domain symbol where the DMRS is located, or may be a time domain offset relative to the time domain symbol where the PUSCH is located.

The following exemplifies optional embodiments of the drawings and meanings of various indication information in the configuration information.

In the embodiment of the present application, in each time-frequency resource unit, the number of zero-power reference signals may be 1 or more. Wherein each zero power reference signal may occupy one or more REs. When the number of REs occupied by each zero-power reference signal is multiple, the number of time domain symbols where the multiple REs are located may be 1 or more, and the number of subcarriers where the multiple REs are located may be 1 or more. The time domain symbols of the time frequency resources of the plurality of zero power reference signals are different, and the subcarriers of the time frequency resources of the plurality of zero power reference signals can be the same or different.

In the embodiment of the present application, for example, the uplink signal may further include a DMRS, and in each time-frequency resource unit, the time-frequency resource of the zero-power reference signal may not overlap with the time-frequency resource of the DMRS. For example, the time-domain symbol where the time-frequency resource of the zero-power reference signal and the time-frequency resource of the DMRS are located may be different. In an example, the time domain symbol in which the zero-power reference signal is located may be immediately adjacent to the time domain symbol in which the DMRS is located. In another example, the time domain symbol in which the zero-power reference signal is located may be far away from the time domain symbol in which the DMRS is located.

In practical applications, the allowed occupied time domain symbol range of each zero power reference signal may be set, and then, 1 or more REs of each zero power reference signal may be set to be located at 1 or more time domain symbols in the allowed occupied time domain symbol range. In this embodiment of the present application, when the number of REs occupied by each zero-power reference signal is 1, the time domain symbol where the 1 RE is located may be a starting time domain symbol of a time domain symbol range allowed to be occupied by each zero-power reference signal; when the number of REs occupied by each zero-power reference information number is 2, the time domain symbol in which the 2 REs are located may be at least one time domain symbol of 2 time domain symbols starting from the starting time domain symbol. It should be noted that, when the number of zero-power reference signals of each time-frequency resource unit is 2, the allowed time-domain symbol range to be occupied may be set for each zero-power reference signal.

For example, each allowed time domain symbol range occupied by the zero power reference signal may be one or more time domain symbols which are consecutive in time domain, and the starting time domain symbol of the time domain symbol range may be any one of the following arrangements.

In an optional setting, the starting time domain symbol may be a 1 st time domain symbol after a time domain symbol in which the time frequency resource of the DMRS is located.

In another optional setting, the starting time domain symbol may be a middle time domain symbol in a time-frequency resource unit; in an example, the most middle time domain symbol may be the most middle time domain symbol of other time domain symbols except the time domain symbol occupied by the DMRS in one time-frequency resource unit, and the most middle time domain symbol will be described in detail in the following embodiments.

In yet another optional setting, the starting time domain symbol may be a kth time domain symbol after a 1 st time domain symbol in which a time-frequency resource of the DMRS is located, where K is a maximum number of time domain symbols allowed to be occupied by each DMRS, and in an example, K may be 1 or 2.

Table 2-1 is a set of illustrations of starting time domain symbols corresponding to various arrangements.

TABLE 2-1

In the embodiment of the application, when each zero power reference signal occupies different subcarriers on 2 time domain symbols, the interference on different subcarrier positions can be measured, and the interference measurement capability of the frequency selection channel is enhanced. The frequency selective channel, i.e. the frequency selective fading channel, i.e. the REs located on different sub-carriers, may obtain interference measurements on different sub-carriers.

It should be noted that, when the number of occupied REs is 2, the distribution manner of the time domain symbols where each zero power reference signal is located may be a first distribution manner or a second distribution manner. The distribution mode adopted by the zero-power reference signal corresponding to the serving cell may be determined according to the number of neighboring cells of the serving cell of the terminal device and the cell identifier of the serving cell. Details will be described in the following examples.

Fig. 3A to 3G are schematic diagrams of patterns of a zero power reference signal according to an embodiment of the present disclosure.

In a first example of the close arrangement, the time domain symbol of the DMRS is 1 time domain symbol, e.g., 0, and the time domain symbol of the zero-power reference signal may be the first time domain symbol, e.g., 1, after the time domain symbol of the DMRS, see the pattern shown in fig. 3A.

In a second example of the close-to-arrangement, the time domain symbols of the DMRS are time domain consecutive time domain symbols, e.g., 0 and 1, and the time domain symbol of the zero-power reference signal is the first time domain symbol, e.g., 2, after the last time domain symbol of the DMRS, as shown in fig. 3B.

In a third example of the close-proximity arrangement, the time domain symbols of the DMRS are two time domain discontinuous time domain symbols, e.g. 0 and 5, the time domain symbols of the zero-power reference signal are 2, and are respectively the first time domain symbols after the 2 time domain symbols in which the DMRS is located, e.g. 1 and 6, see fig. 3E. It should be noted that the time-frequency resource of the zero-power reference signal may be located in the same subcarrier or different subcarriers of different time-domain symbols, as shown in fig. 3F.

In a first example of the remote setting, the time domain symbol of the DMRS is 1 time domain symbol, for example, 0, and the time domain symbol of the zero-power reference signal is the middle-most time domain symbol, for example, 7, as can be seen in the pattern shown in fig. 3C.

In a second example of the remote setting, the time domain symbols of the DMRS are 2 time domain symbols consecutive in time domain, for example, 0 and 1, and the time domain symbol of the zero-power reference signal is the middle-most time domain symbol, for example, 7, as can be seen in the pattern shown in fig. 3D.

As an example, the DMRS may be located in the 1 st time domain symbol in one RB, or on two time domain symbols starting from the 1 st time domain symbol, the time domain symbol where the zero-power reference signal is located may be 1 or more time domain symbols starting from the starting time domain symbol, where the time domain symbol offset of the starting time domain symbol may be an integer greater than 3 and less than 11; the subcarriers in which the zero-power reference signal is located may be one or more subcarriers having a subcarrier offset greater than or equal to 0. In the embodiment of the present application, the time domain symbol position and the number of the zero-power reference signal may be flexibly configured, and may be at any one or more time domain symbol positions. See the pattern shown in fig. 3G, where the offsets of the time domain symbol where the zero power reference signal is located are 10 and 11, and the sub-carrier offsets of the sub-carriers where the zero power reference signal is located are 4, 5, 10, and 11. As another example, the offsets of the time domain symbols where the zero power reference signal is located are 6 and 7, and the offsets of the subcarriers where the zero power reference signal is located are 4, 5, 10, and 11.

It should be noted that the subcarriers of the zero-power reference signal shown in fig. 3A to 3F are only schematic, and the subcarriers of the zero-power reference signal may also be other subcarriers in one time-frequency resource unit.

In this embodiment, taking the zero power reference signal as the zero power reference signal corresponding to the serving cell of the terminal device as an example, when setting the pattern of the time-frequency resource of the zero power reference signal, it may be considered that the time-frequency resources of the zero power reference signal corresponding to the serving cell and the neighboring cell of the serving cell are not overlapped with each other. That is, the time-frequency resources of the zero-power reference signals corresponding to different cells may not overlap.

Fig. 4 is a first schematic distribution diagram of time-frequency resources of a zero-power reference signal in a multi-cell scenario provided in the embodiment of the present application. In the hexagonal sector model shown in fig. 4, taking the serving Cell of the terminal device as Cell 0(Cell 0) as an example, there may be 6 neighboring cells, respectively Cell 1 to Cell 6, around the serving Cell. The adjacent cells may cause large interference to the uplink signal of the edge user of the serving cell, and in order to ensure the accuracy of the zero power reference signal of each cell in measuring the interference of the adjacent cells, the subcarriers in which the zero power reference signals of different cells are located may correspond to different frequency domain offsets.

In practical applications, for example, the scheduling may be performed in advance such that the RE of the zero-power reference signal corresponding to the serving cell is located in a different subcarrier and/or located in a different time domain symbol from the RE of the zero-power reference signal corresponding to the neighboring cell.

In an example, as shown in fig. 4, when the number of REs occupied by the zero power reference signal of the serving cell of the terminal device is 1 and the number of REs occupied by the zero power reference signal of the neighboring cell of the serving cell of the terminal device is 1, the first subcarriers corresponding to the serving cell and the neighboring cell of the serving cell may be set to be different, where the first subcarrier is a subcarrier where the zero power reference signal is located.

Fig. 5A to fig. 6B are schematic diagrams of patterns of a zero power reference signal in a multi-cell scenario according to an embodiment of the present application. As shown in fig. 5A to 6B, the zero power reference signals corresponding to Cell 0 to Cell 1 occupy 1 RE respectively and are located on different subcarriers respectively. In fig. 5A and 5B, a time domain symbol in which the zero power reference signal is located adopts a setting mode close to the DMRS, and in fig. 6A and 6B, a time domain symbol in which the zero power reference signal is located adopts a setting mode away from the DMRS. REs of the DMRSs in fig. 5A and 6A occupy 1 time-domain symbol, and REs of the DMRSs in fig. 5B and 6B occupy 2 time-domain symbols.

Fig. 7A to 7B are schematic diagrams five to six illustrating patterns of a zero power reference signal in a multi-cell scenario according to an embodiment of the present application. As shown in fig. 7A to 7B, in one time-frequency resource unit, the number of zero power reference signals corresponding to each Cell is 2, and each zero power reference signal corresponding to Cell 0 to Cell 1 occupies 1 RE and is located in different subcarriers. The number of the DMRSs corresponding to each cell is 2, each DMRS occupies 1 time domain symbol, and the time domain symbol where each zero-power reference signal is located is respectively and closely arranged to the time domain symbol of the corresponding DMRS. It should be noted that, for 2 zero-power reference signals corresponding to each cell, as shown in fig. 7A, the subcarriers in which REs of two zero-power reference signals are located may be the same as shown in fig. 7B, or may be different.

Fig. 8A is a schematic distribution diagram of time-frequency resources of a zero-power reference signal in a multi-cell scenario according to an embodiment of the present application; fig. 8B is a third schematic distribution diagram of time-frequency resources of a zero-power reference signal in a multi-cell scenario provided in the embodiment of the present application.

In another example, as shown in fig. 8A and 8B, for any target cell among a serving cell of a terminal device and neighboring cells of the serving cell, the number of REs occupied by the zero-power reference signal corresponding to the target cell may be 2, and a first subcarrier and a second subcarrier corresponding to the target cell are not adjacent to each other; the first subcarrier and the second subcarrier are subcarriers where the 2 REs corresponding to the target cell are located. For each time domain symbol in the time frequency resource unit, subcarriers occupied by the zero power reference signals corresponding to different target cells located in the same time domain symbol may be different.

It should be noted that the two time domain symbols shown on the right side in fig. 8A and 8B may be the time domain symbols allowed to be occupied by the zero-power reference signal. The time domain symbol on the left side may be symbol1, the time domain symbol on the right side may be symbol2, and symbol1 may be the starting time domain symbol allowed to be occupied by the zero power reference signal.

Fig. 9A to 9D are nine to twelve schematic diagrams of patterns of a zero power reference signal in a multi-cell scenario according to an embodiment of the present application. As shown in fig. 9A to 9D, the zero power reference signals corresponding to Cell 0 to Cell 1 occupy 2 REs, respectively, and the 2 REs of the same Cell are located in different subcarriers. The time domain symbol in which the zero power reference signal is located in fig. 9A and 9B adopts a setting mode close to the DMRS, and the time domain symbol in which the zero power reference signal is located in fig. 9C and 9D adopts a setting mode away from the DMRS.

In the embodiment of the present application, the frequency domain offset (FreqOffset) of the first subcarrier corresponding to each target Cell may be determined according to the Cell identifier (Cell ID, CID) of each target Cell. Taking the example that the time-frequency resource unit includes 12 subcarriers, the FreqOffset of the first subcarrier corresponding to each cell may be determined as follows.

When mod (CID, Q) < 6, FreqOffset ═ mod (CID, Q) × 2;

when mod (CID, Q) is 6, FreqOffset is 11;

Table 2-2 is a set of illustrations of the first subcarrier of the zero power reference signal determined from the cell identity.

Tables 2 to 2

The subcarrier locations for the zero power reference signal shown in table 2-2 may be seen in fig. 4-6A. In practical applications, when the zero-power reference signal is configured to occupy 1 RE, i.e. single type: the position of the zero power reference signal in the subcarrier occupied by each PRB can be known by querying a predefined table according to the Cell ID as an index.

In this embodiment of the present application, when the number of REs occupied by each zero-power reference signal is 2, the distribution manner of the time domain symbols where the 2 REs of the zero-power reference signal are located may be: a first distribution mode, or a second distribution mode;

In this embodiment of the present application, when the distribution manner of the time domain symbols in which the 2 REs are located is the second distribution manner, the time domain symbols in which the 2 REs are located may be determined according to the cell identifier of the serving cell of the terminal device; wherein,

It should be noted that, in an alternative embodiment, when CID × 2T ≧ 2 × SumCR, the distribution manner of the time domain symbols where the 2 REs are located may be set as the first distribution manner.

In this embodiment of the present application, when the distribution manner of the time domain symbols where the 2 REs are located is the first distribution manner, the subcarrier spacing amount between the first subcarrier and the second subcarrier where the 2 REs are located is 1, 3, or 5. For example, the subcarrier spacing amount is 5, which can be seen in fig. 8A, 9C and tables 2-3.

In this embodiment of the present application, when the distribution manner of the time domain symbols where the 2 REs are located is the second distribution manner, the subcarrier spacing amount between the first subcarrier and the second subcarrier where the 2 REs are located is 2, 4, or 6. For example, the subcarrier spacing amount is 5, which can be seen in fig. 8B, fig. 9D and tables 2-4.

For example, in an alternative embodiment, if the number of subcarriers of the zero-power reference signal corresponding to each cell is 2, the number of subcarriers is the first subcarrier and the second subcarrier. The identifier of the first subcarrier corresponding to the cell may be determined according to the cell identifier of the cell, and the identifier of the second subcarrier corresponding to the cell may be a remainder modulo 12 of a sum of the identifier of the first subcarrier and a preset subcarrier offset W. For example, W may be equal to 5. Reference may be made to fig. 5. It should be noted that, when the REs occupied by the zero-power reference signals corresponding to the same cell are located in the same time domain symbol, the setting method may be considered to be adopted.

Tables 2-3 are an illustration of the RE of the zero power reference signal of each cell occupying 2 subcarriers over 2 time domain symbols.

Tables 2 to 3

In another example, fig. 6 is a third schematic diagram of the distribution of subcarriers of zero-power reference signals of a target cell and 6 neighboring cells, and can refer to fig. 6. The time-frequency resources of the zero-power reference signals shown in the cells 0 to 5 are 2 REs located in different subcarriers and located in the same time domain symbol.

For example, in an optional implementation manner, if the number of subcarriers of the zero-power reference signal corresponding to each cell is 2, and the time-frequency resource of the zero-power reference signal corresponding to each cell is located in 1 time-domain symbol. The subcarriers and time domain symbols where the time frequency resources of the zero power reference signals corresponding to each cell are located can be respectively determined.

Tables 2-4 are a set of illustrations that REs of the zero-power reference signal of each cell occupy 1 time domain and 2 subcarriers.

Tables 2 to 4

Wherein Symbol1 is the 1 st time domain Symbol of the 2 time domain symbols allowed to be occupied by each zero power reference signal; symbol2 allows the occupation of the 2 nd time domain Symbol of the 2 time domain symbols for each zero power reference signal. Wherein, "Symbol 1: (0, 6) "means that 2 REs are located on 2 subcarriers having frequency offsets of 0 and 6 on the 1 st time domain symbol among the 2 time domain symbols allowed to be occupied.

In this embodiment of the present application, in a time-frequency resource unit for transmitting the uplink signal, the number of the zero-power reference signals is 2; the subcarriers where the time frequency resources of the 2 zero power reference signals are located may be set to be the same or different.

Taking the zero power reference signal corresponding to each cell occupying 1 RE as an example, when the subcarriers are the same, the pattern that the zero power reference signal corresponding to each cell occupies 1 RE can be seen in fig. 7A.

When the subcarriers are different in arrangement, the subcarrier spacing amount between the subcarriers where the 2 zero-power reference signals are located may be 1, 3 or 5. Illustratively, a pattern with a subcarrier spacing amount of 5 may be seen in fig. 7B.

In the embodiment of the present application, there are two types of PUSCH resource allocation manners in an NR system, which are PUSCH of type a and type b, and the main difference is the starting position of the time domain symbol of PUSCH in each slot and the number of the scheduled time domain symbols. Table 3-1 shows a PUSCH resource allocation scheme.

TABLE 3-1

Wherein S represents the starting time domain symbol position, L represents the scheduled continuous time domain symbol length, and S + L represents the last time domain symbol position of the scheduled PUSCH.

DMRS may be configured in PUSCH, and may be used for channel estimation and data demodulation, and table 3-2 is a configuration table of a time domain symbol position of DMRS. (see TS38.212 Table 6.4.1.1.3-3)

TABLE 3-2

Wherein l₀Indicating the offset of the first DMRS symbol relative to the starting symbol of PUSCH scheduling to determine the position of the starting symbol of DMRS: the configuration is carried out through a high-layer parameter dmrs-Type A-Position in a Type A PUSCH, and the value is 0 in a Type B PUSCH, namely starting from the first time domain symbol Position of the PUSCH.

In practical application, the time-frequency resource of the zero-power reference signal can be set by referring to the configuration of the PUSCH or the DMRS. For example, in Type B PUSCH, 1 DMRS occupies the 1 st time domain symbol, and the 2 nd time domain symbol may be used for a zero power reference signal.

EXAMPLE III

On the basis of the foregoing embodiments, the embodiments of the present application provide various implementation manners for generating an uplink signal according to configuration information.

Fig. 10 is a schematic diagram of a mapping process involved in an embodiment of the present application.

For example, the frequency domain of the time-frequency resource unit may include 12 subcarriers, and the time-frequency resource of the zero-power reference signal includes P REs located on a time-domain symbol to be processed in one time-frequency resource unit for transmitting the uplink signal.

In the embodiment of the present application, the subcarriers in which P REs are located are{i₁，i₂，...，i_PAnd the other subcarriers except the subcarriers described by the P REs in the 12 subcarriers are { j }₁，j₂，…，j_12-P}; wherein, P is an integer of more than or equal to 1 and less than 12; the method further comprises the following steps:

forming the first data and the second data into time domain data x, wherein x ═ x (x)₁，x₂，...，x_k)^T；

According to the DFT transformation moment W_12×kPerforming DFT on the time domain data x to obtain frequency domain data y;

wherein y ═ y₁，y₂，y₃，...，y₈，y₉，y₁₀，y₁₁，y₁₂)^TThe uplink signals on the P REs

Are all 0;

In the embodiment of the present application, when the zero-power reference signal occupies 2 REs on the time domain symbol to be processed, that is, P is equal to 2, a signal processing procedure of uplink transmission in a single carrier system may be exemplified as follows.

Illustratively, the zero-power reference signal occupies the 3 rd RE and the 9 th RE in the frequency domain symbol y. Namely, it is

y＝(y₁，y₂，0，…，y₈，0，y₁₀，y₁₁，y₁₂)^T

Suppose that the time domain sampling signal transmitted by the transmission band is x ═ x₁，x₂，...，x_k)^TDFT transformation moment of W_12×kThen, there are:

y＝W_12×k·x

at this time, the 3 rd and 9 th elements in y need to be 0, and thus the following equation can be obtained:

thus, after calculation the collation yields:

in the embodiment of the present application, there is actually 2 signal redundancies in each of the 12 signals to be transmitted, i.e., the above-mentioned x11 and x12 are obtained from a linear combination of the x1 to x10 signals. When x11 and x12 satisfy the linear combination, zero power reference signals, namely mutes RE, can be transmitted on the frequencies of y3 and y9, so that the gNB can perform neighbor cell interference measurement in the uplink transmission process in the single carrier system.

The embodiment of the present application for generating an uplink signal can implement a single carrier system, and further achieve the purpose of keeping a small Peak to Average Power Ratio (PAPR).

Example four

On the basis of the foregoing embodiments, the embodiments of the present application further provide an optional implementation manner of the ranges of the time-frequency resources of the DMRS and the zero-power reference signal in the group of uplink signals.

In this embodiment, a terminal device may transmit an uplink signal including a DMRS to a network device, where the DMRS may occupy one or more REs on a time-frequency resource element used for transmitting the uplink signal. For example, REs occupied by DMRS may be located on one or more subcarriers in one or more time domain symbols. It should be noted that, on a time domain symbol where an RE occupied by the DMRS is located, the REs except for the DMRS may be set as free REs or data REs, in this embodiment, the transmission power in the time-frequency resource range corresponding to the free REs in the uplink signal is zero, and the data REs are REs used for transmitting data.

In the embodiment of the present application, a zero power reference signal may be set on a time-frequency resource unit for transmitting an uplink signal, or the zero power reference signal may not be set. The time-frequency resource where the DMRS is located when the uplink signal includes the DMRS and does not include the zero-power reference signal may be the same as the time-frequency resource where the DMRS is located in various patterns that include both the DMRS and the zero-power reference signal shown in the drawings of the embodiments of the present application, and the RE where the zero-power reference signal is located may be a data RE or a spare RE. For example, REs located in the same time domain symbol as the DMRS may be spare REs or data REs, and REs located in different time domain symbols from the DMRS may be data REs. In the embodiment of the present application, as not specifically described, REs except for REs occupied by the zero-power reference signal in a time domain symbol where the zero-power reference signal is located are data REs. The zero power reference signal and the DMRS in the uplink signal will be exemplarily described below with reference to the drawings.

In this embodiment of the application, the time-frequency resource of the DMRS may be determined from a group resource set according to a first identifier corresponding to a terminal device, where the group resource set includes a plurality of group resources, different first identifiers correspond to different group resources in the group resource set, and time-domain symbols in which at least two group resources in the plurality of group resources are located are different.

And the time domain symbols and/or subcarriers where the DMRSs corresponding to different first identifiers are located are different.

It should be noted that, as an application example, by planning the first identifier corresponding to the DMRS, the DMRSs of multiple terminal devices may be sent in the same time-frequency resource range by using different time-domain symbols and/or different subcarriers where time-frequency resources occupied by different corresponding DMRSs of the first identifier are located.

In this embodiment of the application, for example, the first identifier may be an identifier of a code division multiplexing group (CDM group) corresponding to the DMRS corresponding to the terminal device. In the embodiment of the present application, the identification of the code division multiplexing packet may be referred to as CDM group ID. The DMRS in one time-frequency resource element for transmitting an uplink signal may correspond to one CDM group ID. In this embodiment of the present application, it should be noted that a set of time-frequency resources of DMRSs corresponding to all CDM groups is a group resource set, and resources in the group resource set are not used for transmitting data, that is, the CDM groups mentioned in this embodiment of the present application correspond to CDM groups (i.e., DMRS CDM groups with data) that are not used for transmitting data.

In this embodiment of the present application, a time domain symbol and/or a subcarrier where the DMRS in the uplink signal is located may be determined according to an identifier of a CDM group and a CDM configuration type corresponding to the terminal device.

In this embodiment of the application, the time-frequency resource where the zero-power reference signal is located may be determined based on a Code Division Multiplexing (CDM) configuration type corresponding to the DMRS and/or an identifier of a CDM group.

It should be noted that the CDM group ID corresponding to the DMRS may be a CDM group ID corresponding to the terminal device that transmits the DMRS.

For a cell, terminal devices under one cell may be divided into multiple CDM groups, where time-frequency resources in which DMRSs transmitted by terminal devices of different CDM groups are located are different, and time-frequency resources in which DMRSs transmitted by terminal devices of the same CDM group are located are the same.

For example, the REs in which the DMRSs transmitted by the terminal devices with different CDM groups are located may be different, that is, interference between the DMRSs transmitted by the terminal devices with different CDM groups is avoided by time division and/or frequency division. The REs of the DMRSs transmitted by the terminal devices belonging to the same CDM group are the same, each CDM group corresponds to one orthogonal code sequence, different UEs in the same CDM group transmit the DMRSs by using different orthogonal codes in the orthogonal code sequences, namely, the interference between the DMRSs of different UEs in the same CDM group is avoided by a code division mode.

It should be further noted that the uplink signal may be a signal transmitted through one antenna port of the terminal device; at this time, the CDM group corresponding to the terminal device may be a CDM group corresponding to an antenna port of the terminal device; each antenna port of the terminal device may correspond to a different CDM group, or each antenna port of the terminal device may correspond to a different orthogonal code in the CDM group. For example, antenna port 0 and antenna port 1 of the terminal device may correspond to group 0, and antenna port 2 and antenna port 3 may correspond to group 1. The first identifier may be a CDM group ID, and in an example, the CDM group ID corresponding to the terminal device may be a CDM group ID corresponding to a DMRS transmitted by an antenna port in the terminal device.

In an embodiment of the present application, the configuration information of the zero power reference information supporting CDM group may include at least one of the following information:

a CDM configuration type of the DMRS; wherein the CDM configuration type of the DMRS comprises: a first CDM type, a second CDM type, a third CDM type; when the CDM configuration type of the DMRS is a third CDM type, the time-frequency resource of the DMRS is determined from a group resource set according to a CDM group ID corresponding to the DMRS, wherein the group resource set comprises a plurality of group resources, different CDM group IDs correspond to different group resources in the group resource set, and time-domain symbols in which at least two group resources in the plurality of group resources are located are different;

supporting the configuration mode of a zero power reference signal of CDM group; wherein, the configuration mode comprises: a first configuration mode and a second configuration mode; the RE occupied by the zero-power reference signal adopting the first configuration mode is the same as the subcarrier where the RE occupied by the DMRS is located; the sub-carrier where the zero-power reference signal in the second configuration mode is located is a set of sub-carriers where all CDM group DMRSs corresponding to the CDM configuration type are located, where the sub-carriers where all CDM group DMRSs are located are part of sub-carriers in a time-frequency resource unit for transmitting an uplink signal;

the number of the group resource units in each group resource.

And the DMRS contained in each group resource element occupies continuous time domain symbols and/or continuous subcarriers.

In this embodiment of the present application, when the configuration indication of whether the zero-power reference signal supports Code Division Multiplexing (CDM) group indicates yes, the terminal device may determine, according to the time-frequency resource of the DMRS or according to a CDM configuration type corresponding to the DMRS in the uplink signal including the zero-power reference signal, the time-frequency resource where the zero-power reference signal is located; when the configuration indication of whether the zero-power reference signal supports Code Division Multiplexing (CDM) group is negative, the terminal device may determine the time-frequency resource where the zero-power reference signal is located according to other configuration modes or other parameters in the configuration information provided in the embodiment of the present application. For example, the starting time domain symbol of the zero-power reference signal may be the 1 st time domain symbol after the time domain symbol in which the DMRS is located, the number of the time domain symbols occupied by the zero-power reference signal is 1 or 2, and the subcarrier in which the zero-power reference signal is located is the 0 th subcarrier or the 5 th subcarrier.

In this embodiment of the application, in a frequency domain, a subcarrier in which a zero-power reference signal is located may be determined according to at least one of CDM group ID and CDM configuration type corresponding to a DMRS in an uplink signal containing the zero-power reference signal. In the time domain, the starting time domain symbol where the zero-power reference signal is located may include other time domain symbols adjacent to or not adjacent to the time domain symbol where the DMRS is located, for example, the starting time domain symbol where the zero-power reference signal is located may include a 1 st time domain symbol and/or a 2 nd time domain symbol after the time domain symbol where the DMRS is located, or the time domain symbol where the zero-power reference signal is located may be another time domain symbol determined according to a CDM group ID and/or a CDM configuration type; the number of time domain symbols in which the zero power reference signal is located may be 1, 2, 3, 4, 6, etc. In addition, the time-frequency resource location occupied by the zero-power reference signal may be configured by the network device through signaling at will, for example, at least one subcarrier location may be configured in each time-frequency resource unit in the frequency domain as the location of the zero-power reference signal, and the number and location of at least one time-domain symbol may be configured in each time-frequency resource unit in the time domain, where the network device is configured through signaling, including through high-layer signaling (e.g. rrc signaling). The number of time domain symbols occupied by each zero-power reference signal may be the same as the number of time domain symbols occupied by each DMRS, and in an example, the number of time domain symbols occupied by the zero-power reference signal may be determined according to the number of time domain symbols occupied by each DMRS in the configuration information of the DMRS. An exemplary explanation will be made below in conjunction with the CDM configuration type and CDM group ID.

In the embodiment of the present application, there are various embodiments of the time-frequency resource where the zero power reference signal is located, which is determined based on the information such as the CDM configuration type and the CDM group ID corresponding to the DMRS.

In an optional implementation manner of determining the zero-power reference signal, a subcarrier where the zero-power reference signal is located may be the same as a subcarrier where the DMRS is located, where the subcarrier where the DMRS is located may be determined according to a CDM group ID corresponding to a terminal device that transmits the DMRS. That is, the subcarrier in which the zero power reference signal is located may be determined according to a CDM group ID corresponding to the terminal device transmitting the zero power reference signal and the DMRS.

Various configurations of subcarriers in which the DMRS is located are described below, and the subcarrier in which the zero-power reference signal is located may be determined in the same manner as the subcarrier in which the DMRS is located is determined based on the CDM group ID.

In the embodiment of the present application, the subcarrier in which the DMRS is located may be determined according to a CDM configuration type and a CDM group ID of the DMRS. Wherein, the CDM configuration type of the DMRS may be a first CDM type, a second CDM type, and a third CDM type.

Table 4-1 is an illustration of a CDM configuration type.

TABLE 4-1

The number of time domain symbols occupied by the zero-power reference signal may be 1 or 2. The starting time domain symbol of the occupied time domain symbols is allowed to be the 1 st time domain symbol after the time domain symbol occupied by the DMRS.

In an example, the number of time domain symbols occupied by the zero-power reference signal and the number of time domain symbols occupied by the DMRS may be the same.

In an optional implementation manner, the configuration information of the DMRS may include information such as the number of subcarrier intervals of the DMRS. The subcarrier spacing number is the number of subcarriers spaced among a plurality of subcarriers in which DMRSs of the same CDM group are located, for example, if the subcarriers in which DMRSs corresponding to a certain group ID are located are 3, 7, or 11, the subcarrier spacing number is 3.

In this embodiment of the application, when the CDM configuration type is the first CDM type and the second CDM type, the subcarriers in which DMRSs corresponding to different group IDs are located are different. The time frequency resource of the zero power reference signal can be configured by adopting the first configuration mode or the second configuration mode. When the CDM configuration type is a third CDM type, the time-frequency resource of the DMRS is determined from a group resource set according to a CDM group ID corresponding to the DMRS, where the group resource set includes a plurality of group resources, different CDM group IDs correspond to different group resources in the group resource set, and time-domain symbols in which at least two group resources in the plurality of group resources are located are different. Illustratively, a time domain symbol in which the DMRS corresponding to a first CDM group is located is different from a time domain symbol in which the DMRS corresponding to a second CDM group is located, where the first CDM group is a CDM group corresponding to the terminal device, and the second CDM group is at least one other CDM group of at least two CDM groups supported by the third CDM type and including the first CDM group.

In the embodiment of the present application, the subcarriers in which DMRSs corresponding to different CDM groups are located are different, and various embodiments may be provided. The following exemplary description is given by the time-frequency resource unit including 12 subcarriers

For example, the pattern configuration type (hereinafter, referred to as CDM configuration type of DMRS) adopted by the sub-carrier where the DMRS configured based on CDM group ID is located may include:

fig. 11 is a set of schematic diagrams of subcarriers in which DMRSs configured based on CDM group are located.

In the first CDM type, one cell may support 2 CDM groups, CDM group 0 and CDM group1, respectively.

As shown in (1) and (2) of fig. 11, the DMRS transmitted by the terminal device belonging to CDM group 0 is located on subcarriers having even subcarrier offsets, and the DMRS transmitted by the terminal device belonging to CDM group 0 is located on subcarriers having odd subcarrier offsets.

As shown in (1) in fig. 11, the REs occupied by the DMRS are located on one time domain symbol, that is, the time domain symbol number configuration type of the DMRS is a Single type, and the DMRS of each CDM group of terminal devices occupies 6 REs. As shown in (2) in fig. 11, the REs occupied by the DMRS are located on two adjacent time domain symbols, that is, the time domain symbol number configuration type of the DMRS is a Double type, and the DMRS of each CDM group of terminal devices occupies 12 REs.

In the second CDM type, one cell may support 3 CDM groups, CDM group 0, CDM group1, and CDM group 2, respectively. The subcarriers in which the DMRS is located are all subcarriers whose subcarrier offset modulo 6 is equal to CDM group ID × 2 and CDM group ID × 2+ 1.

As shown in (3) and (4) in fig. 11, DMRSs transmitted by a terminal device belonging to CDM group 0 are located on all subcarriers whose remainders of subcarrier offsets modulo 3 are 0 and 1, DMRSs transmitted by a terminal device belonging to CDM group1 are located on all subcarriers whose subcarrier offsets are 2 and 3, and DMRSs transmitted by a terminal device belonging to CDM group 2 are located on all subcarriers whose subcarrier offsets are 4 and 5.

As shown in (3) in fig. 11, the REs occupied by the DMRS are located on one time domain symbol, that is, the time domain symbol number configuration type of the DMRS is a Single type, and the DMRS of each CDM group of terminal devices occupies 4 REs. As shown in (4) in fig. 11, the REs occupied by the DMRS are located on two adjacent time domain symbols, that is, the time domain symbol number configuration type of the DMRS is a Double type, and the DMRS of each CDM group of terminal devices occupies 8 REs.

It should be noted that the maximum number of terminal devices that can be supported by two CDM configuration types is the product of the maximum number of terminal devices supported by each CDM group and the CDM group number. The maximum number of terminal devices that can be supported by each CDM group is the number of orthogonal codes in the orthogonal code sequence.

The following is an exemplary description of the number of orthogonal codes in an orthogonal code sequence being 2. When the time-domain symbol number of the DMRS is configured as a Single type, the maximum number of terminal devices that can be supported by each CDM group is 2 × 1, that is, 2. When the number of time domain symbols of the DMRS is configured as a Double type, multiplexing of 2 UEs may also be implemented on two adjacent time domain symbols by time domain orthogonal codes, so that the Double type can support multiplexing of twice more UEs than the single type, and based on this, the maximum number of terminal devices that can be supported by each CDM group is 2 × 2, that is, 4.

Table 4-2 shows the maximum number of terminal devices that can be supported by each CDM configuration type when the number of orthogonal codes in the orthogonal code sequence is 2.

TABLE 4-2

When one terminal device corresponds to one single stream transmission, the maximum number of antenna ports supported by each CDM group, that is, the maximum number of terminal devices supported by each CDM group, corresponds to one antenna port corresponding to one terminal device.

As shown in the description of the first CDM type in table 1, in the pattern shown in (1) in fig. 11, the maximum number of terminal devices that can be supported by each CDM group is 2, the number of CDM groups supported by the first CDM type is 2, and the maximum number of antenna ports that can be supported by time-frequency resources using a Single-type DMRS is 4.

As shown in the description of the first CDM type in table 1, the maximum number of terminal devices that can be supported by each CDM group in the pattern shown in (2) in fig. 11 is 4, the number of CDM groups supported by the first CDM type of the first CDM configuration type is 2, and the maximum number of antenna ports that can be supported by time-frequency resources using DMRSs of a Double type is 8.

As shown in the second CDM configuration type-second CDM type description in table 1, the maximum number of terminal devices that can be supported by each CDM group in the pattern shown in (3) in fig. 11 is 2, the number of CDM groups supported by the second CDM configuration type-second CDM type is 3, and the maximum number of antenna ports that can be supported by time-frequency resources using a Single-type DMRS is 6.

As shown in the second CDM type description in table 1, the maximum number of terminal devices that can be supported by each CDM group in the pattern shown in (3) in fig. 11 is 4, the number of CDM groups supported by the second CDM type is 3, and the maximum number of antenna ports that can be supported by time-frequency resources using a Single-type DMRS is 12.

In a second optional implementation manner of configuring the zero-power reference signal based on the CDM group ID, the subcarrier where the zero-power reference signal is located may be a set of subcarriers where all DMRSs corresponding to the CDM configuration type are located, where the subcarrier where the zero-power reference signal is located is a part of subcarriers in a time-frequency resource unit of an uplink signal. In this case, the subcarriers in which DMRSs corresponding to different group IDs are located may be the same or different.

In an example, the configuration manner of the zero-power reference signal supporting CDM group is a second configuration manner; a CDM configuration type of the DMRS is a first CDM type or a second CDM type; the subcarriers in which DMRSs corresponding to different group IDs are located are different; the subcarrier where the zero-power reference signal is located comprises subcarriers where all CDM group DMRSs corresponding to CDM configuration types are located; the initial time domain symbol where the RE occupied by the zero-power reference signal is located is the 1 st time domain symbol after the time domain symbol where the DMRS is located or any time domain symbol which is not adjacent to the time domain symbol occupied by the DMRS.

In yet another example, the configuration manner of the zero-power reference signal supporting CDM group is the second configuration manner; the CDM configuration type of the DMRS is a third CDM type; the time frequency resource of the zero power reference signal comprises a set of time frequency resources of all CDM group DMRSs corresponding to CDM configuration types, wherein the time frequency resource of the DMRS is removed from a group resource set, wherein the time frequency resource of the DMRS is determined according to CDM group IDs corresponding to the DMRSs, the group resource set comprises a plurality of group resources, different CDM group IDs correspond to different group resources in the group resource set, and time domain symbols of at least two group resources in the group resources are different; all subcarriers in which DMRSs of all CDM groups are located are part of subcarriers in a time-frequency resource unit for transmitting uplink signals.

In this embodiment of the present application, the subcarrier in which the zero-power reference signal is located is a part of subcarriers of the time-frequency resource unit for transmitting the uplink signal.

Fig. 12 to fig. 15 are schematic diagrams of patterns of a zero power reference signal configured in a first configuration manner according to an embodiment of the present application.

In one example of practical application, the zero-power reference signal may adopt a first configuration manner, and the CDM configuration type of the DMRS may be a first CDM type or a second CDM type.

When the CDM configuration type of the DMRS is a first CDM type, referring to fig. 12 and 13, the subcarriers in which the zero-power reference signal is located include all subcarriers satisfying a first condition that a remainder of a subcarrier offset modulo 2 is equal to all subcarriers of the CDM group ID; wherein, the zero power reference signal in fig. 12 occupies 1 time domain symbol, and the zero power reference signal in fig. 13 occupies 2 time domain symbols.

When the CDM configuration type of the DMRS is the second CDM type, referring to fig. 14 and 15, the subcarrier where the zero-power reference signal is located includes all subcarriers satisfying a second condition that a remainder of subcarrier offset modulo 6 is equal to all subcarriers of the CDM group ID × 2 and the CDM group ID × 2+ 1. Wherein, the zero power reference signal in fig. 14 occupies 1 time domain symbol, and the zero power reference signal in fig. 15 occupies 2 time domain symbols.

Fig. 16 to fig. 22 are schematic diagrams of patterns of a zero power reference signal configured in a second configuration manner according to an embodiment of the present application.

In another example of practical application, the zero-power reference signal adopts a second configuration mode, and the CDM configuration type of the DMRS is the first CDM type, the second CDM type or the third CDM type.

When the CDM configuration type of the DMRS is the first CDM type, referring to fig. 16, 17, 18, and 19, the subcarriers in which the zero-power reference signal is located are all the subcarriers in which the DMRSs of all CDM group IDs corresponding to the first CDM type are located. Among them, the zero power reference signal in fig. 16 and 18 occupies 1 time domain symbol, and the zero power reference signal in fig. 17 and 19 occupies 2 time domain symbols.

It should be noted that, in the RB shown in fig. 18 and fig. 19, the intervals between the multiple adjacent subcarriers where the DMRSs corresponding to each group ID are located are the same number of subcarriers, and the intervals between the adjacent subcarriers where the DMRSs corresponding to the same group ID are located in fig. 18 are 3 subcarriers; the interval between adjacent subcarriers where DMRSs corresponding to different group IDs are located is 1 or more subcarriers; in fig. 18, the interval between adjacent subcarriers where DMRSs corresponding to different group IDs are located is 1 subcarrier. It should be noted that the DMRS configuration information may include the number of subcarriers in an interval.

And when the CDM configuration type of the DMRS is a second CDM type, the subcarrier where the zero-power reference signal is located is all subcarriers where the DMRSs of all CDM group IDs corresponding to the second CDM type are located. Wherein all subcarriers in which all DMRSs are located are part of subcarriers in one RB.

When the CDM configuration type of the DMRS is a third CDM type, removing, by the time-frequency resource where the zero-power reference signal is located, the time-frequency resource where the DMRS of the uplink signal is located, where the time-frequency resource where the DMRS of all CDM groups is located includes a set of time-frequency resources where all CDM groups corresponding to the CDM configuration type are located, and all subcarriers where all the DMRS of all CDM groups are located are part of subcarriers in a time-frequency resource unit for transmitting the uplink signal.

As an example, each group resource comprises at least two group resource units; the time domain symbols occupied by the at least two group resource units are the same, and the subcarriers occupied by the at least two group resource units are different; each group resource unit occupies at least one time domain symbol; each group resource unit occupies at least one subcarrier; and all subcarriers in which the group resource units corresponding to all CDM groups are located are partial subcarriers in the time-frequency resource units.

In this embodiment of the present application, the time-frequency resource unit for transmitting the uplink signal including the DMRS is a resource block RB, and any RB includes 2 or 3 or 4 group resource units; each group resource unit occupies 2 continuous time domain symbols; each group resource unit occupies 2 continuous sub-carriers; the number of time domain symbols occupied by all group resource units of CDM group ID is 6; the number of subcarriers occupied by the group resource elements of all CDM group IDs is 4.

Referring to fig. 20, each group resource in the group resource set in any time-frequency resource unit for transmitting the uplink signal includes 2 group resource units, and the group resource units of DMRS corresponding to all CDM group IDs occupy 4 time-domain symbols and 4 subcarriers; the number of the CDM groups supported by the third CDM type is 4; the REs of each group resource element are located on two consecutive subcarriers on a 2-time domain symbol.

Referring to fig. 21, each group resource in the group resource set in any time-frequency resource unit for transmitting the uplink signal includes 2 group resource units, and the group resource units of DMRS corresponding to all CDM group IDs occupy 2 time-domain symbols and 4 subcarriers; the number of the CDM groups supported by the third CDM type is 4; the REs of each group resource element are located on two consecutive subcarriers on a 2-time domain symbol.

Referring to fig. 22, each group resource in the group resource set in any time-frequency resource unit for transmitting the uplink signal includes 2 group resource units, and the group resource units of DMRS corresponding to all CDM group IDs occupy 6 time-domain symbols and 4 subcarriers; the number of the CDM groups supported by the third CDM type is 6; for two consecutive subcarriers in which REs of each group resource element are located on 2 consecutive time domain symbols, as shown in fig. 22(1), a set of time-frequency resources of DMRSs corresponding to all CDM group IDs is a group resource set; the group resource set in one RB may include time-frequency resources shown by two black boxes, where the DMRS corresponding to each group ID is one group resource, each group resource includes two group resource elements located in the two black boxes, and each group resource element occupies four REs, that is, 4 REs distributed in a field shape. The time domain symbols of two group resource units in the same group resource are the same, and 4 subcarriers are arranged between the subcarriers of the two group resource units.

Fig. 12 to 15 are a set of schematic diagrams of patterns of zero power reference signals of different CDM groups in the first configuration. The differences between the respective patterns and the selection of the related configuration parameters are shown in table 2.

Table 5 is a comparative illustration of various patterns of the zero power reference signal in the first configuration.

TABLE 5

Fig. 16 to 21 are a set of schematic diagrams of patterns of zero power reference signals of different CDM groups in the second configuration.

Table 6 is a comparative illustration of various patterns of the zero power reference signal in the second configuration.

TABLE 6

The technical scheme provided by the embodiment of the application has the following technical effects:

in this embodiment of the application, the configurations of the zero power reference signals shown in fig. 12 to fig. 22 can ensure that time-frequency resources of the zero power reference signals corresponding to users of the same CDM group are the same, so that data of multiple users on the group do not cause interference to the zero power reference signals. A user here may refer to a terminal device, an antenna port, or a data stream. That is, the RE of the zero power reference signal of the user corresponding to each group is located at a different position from the data RE of the user in the same group.

In the embodiment of the present application, the configurations of the zero power reference signals shown in fig. 16 to fig. 22 can ensure that the REs of the zero power reference signals are different from the data REs of the users corresponding to different CDM group IDs in the cell. That is, the zero power reference signal does not include interference generated by data REs from users corresponding to all CDM group IDs of the cell. Based on the method, the network equipment can accurately measure the interference of the adjacent cells according to the zero power reference signal. I.e. using a reference signal with only zero power to measure the neighbor interference.

As shown in fig. 22, in the technical scheme that the second configuration manner of the zero-power reference signal is combined with the third CDM type of the DMRS, the number of CDM groups that can be supported by the DMRS is 6, and the number of multiplexed UEs that can be supported by each CDM group is 4, that is, the DMRS supports multiplexing of at most 24 UEs, that is, the DMRS can support parallel transmission of at most 24 layer data streams, and thus the system capacity of uplink transmission can be significantly increased.

In the embodiment of the present application, the time frequency resources where the zero power reference signals corresponding to different CDM groups are located may be different or partially the same; a zero-power reference signal of one CDM group cannot occupy all subcarriers of one time domain symbol; it should be noted that a DMRS of one CDM group may occupy all subcarriers of one time domain symbol, but the reason is to avoid transmission power interruption; therefore, when zero power is transmitted while the DMRS is transmitted, zero power of all groups cannot occupy all subcarriers.

In this embodiment, as shown in fig. 22, when the DMRSs adopt the third CDM type and the zero-power reference signal is configured in the second configuration manner, the position of the RE where the DMRSs corresponding to each group ID are located may be any one of the 6 patterns shown in fig. 22, and it is only necessary to keep that the time-frequency resources where the DMRSs corresponding to each group ID are located are different. For example, the position of the RE where the DMRS corresponding to each group ID is located may be transformed using one group offset.

In this embodiment of the application, it should be noted that the uplink signal may not include a zero power reference signal, and at this time, when the DMRS adopts the third CDM type, a subcarrier set in which DMRSs corresponding to all CDM groups are located may be all REs or part of REs in a time-frequency resource unit used for transmitting the uplink signal. As an example, the set of subcarriers in which DMRSs corresponding to all CDM groups are located may be all subcarriers in one RB.

EXAMPLE five

On the basis of the foregoing embodiments, the present application further provides an implementation manner in which a group of terminal devices sends an uplink signal including a zero-power reference signal.

In this embodiment of the present application, the transmission power of each time-frequency resource unit for transmitting the uplink signal may be configured in advance on the terminal device, and for example, may be determined by the terminal device according to factors such as signal strength and signal quality in the current environment.

When the terminal equipment sends the uplink signal containing the zero-power reference signal, the transmitting power of the time-frequency resource where the zero-power reference signal is located is set to be zero, so that the transmitting power of the uplink signal containing the zero-power reference signal on the whole time-frequency resource unit can reach the preset transmitting power, and the transmitting power of the uplink signal is relatively stable in a time domain and a frequency domain; the method and the terminal equipment can avoid insufficient transmission power on some time frequency resources in the uplink signal caused by setting the zero-power reference signal, and the terminal equipment can redistribute the transmission power originally distributed on the time frequency resource where the zero-power reference signal is located to other time frequency resources to be sent.

In an optional implementation manner, the terminal device may be configured in a time-frequency resource unit for transmitting the uplink signal, and a difference between transmission powers of different time-domain symbols is smaller than a preset deviation power threshold. For example, in practical applications, the transmission power of different time domain symbols may be set to be equal in the time frequency resource used for transmitting the uplink signal.

In this embodiment, the configuration information of the network device sending the zero power reference signal to the terminal may include at least one of the following information: power reconfiguration indication, power reconfiguration strategy, power reconfiguration proportion, reconfiguration range and power deviation threshold.

In this embodiment of the present application, the power reconfiguration indicator is used to indicate whether the terminal device allocates the transmit power of the target time domain symbol including the RE of the zero power reference signal to the valid RE of the target time domain symbol when transmitting the uplink signal including the zero power reference signal. The effective RE is other REs except for the RE where the zero-power reference signal is located in the target time domain symbol, wherein the transmission power of the effective RE is not zero.

The terminal device may turn on the power reconfiguration function by default. The power reconfiguration strategy may include a first reconfiguration strategy and a second reconfiguration strategy, wherein the first reconfiguration strategy is to equally allocate the transmission power of the target time domain symbol to the effective REs, and the second reconfiguration strategy is to determine the transmission power on the effective REs according to a power reconfiguration proportion determined based on the RE types.

In the embodiment of the present application, according to whether the time-frequency resource contains the zero-power reference signal, the time-frequency resource used for sending the uplink signal may be divided into several reconfiguration ranges and an unnecessary reconfiguration range, wherein the transmission power on each time domain symbol or subcarrier or RE in the time-frequency resource in the unnecessary reconfiguration range remains unchanged, and the transmission is performed according to the initial transmission power corresponding to the time domain symbol or subcarrier or RE; the time-frequency resources of each reconfiguration range are all REs in one or more subcarriers on one or more time-domain symbols containing REs where the zero-power reference signals are located. The default value of the reconfiguration range may be one time domain symbol in each RB in which the uplink signal is transmitted. The default value of the power deviation threshold may be 0.

The following is an exemplary explanation taking an example in which one reconfiguration range is all REs on one time domain symbol containing REs occupied by zero-power reference signals in one RB.

In the embodiment of the present application, the power reconfiguration policy may include various implementations.

For example, the time-frequency resource unit for transmitting the uplink signal may be an RB or a physical resource block PRB; in any target time domain symbol containing REs occupied by the zero-power reference signal, the transmit power of each effective RE may be the transmit power of the target time domain symbol divided by the number of effective REs; wherein the effective REs are other REs except for the REs occupied by the zero-power reference signal on the target time domain symbol.

In the embodiment of the present application, referring to the respective patterns in the foregoing embodiments, data REs for carrying data and/or pilot REs for transmitting DMRSs may be located on time domain symbols where zero-power reference information numbers are located.

In the first power reconfiguration strategy, the power reconfiguration mode may be an average allocation mode.

Assuming that the total transmission power of all REs of all subcarriers on the time domain symbol is W0, the time domain symbol contains 12 REs located in 12 subcarriers, and the number of REs occupied by the zero-power reference signal is N1. The other REs except the RE occupied by the zero-power reference signal on the time domain symbol may be referred to as effective REs, and each effective RE corresponds to a transmission power W1-W0/(12-N1).

In an example, the valid REs of the target time domain symbol are data REs for carrying data, and the transmission power of the target time domain symbol can be set to be evenly distributed to each data RE in the target time domain symbol.

In the second power reconfiguration strategy, the power reconfiguration mode may be an allocation mode according to an RE type.

Wherein, different reconfiguration proportions can be adopted for different types of REs in the effective REs for distribution. Wherein, the value range of the reconfiguration proportion corresponding to each RE type may be 0 to 100%, and the sum of the reconfiguration proportions corresponding to all RE types is 100%.

For example, the valid REs may include data REs and pilot REs, where the data REs are REs for transmitting data, the pilot REs are REs for transmitting DMRS, and the reconfiguration ratio may include: the ratio of the transmission power of the data REs to the total transmission power Rate1, and the ratio of the transmission power of the pilot REs to the total transmission power Rate 2.

In an example, the number of data REs and pilot REs in the valid REs are N2 and N3, respectively. The transmit power of each data RE should be W2-W0-Rate 1/N2, and the transmit power of each pilot RE should be W0-Rate 2/N3.

Other technical scheme details and technical effects of the embodiments of the present application can be referred to the descriptions in other embodiments of the present application.

EXAMPLE six

The embodiment of the application also provides a communication device. Fig. 23 is a first structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 23, the communication apparatus 1100 may include: a processing module 1101 and a sending module 1102.

In a first alternative implementation of the communication device 1100:

a processing module 1101, configured to instruct the sending module 1102 to send an uplink signal including a zero-power reference signal to a network device; and in the time-frequency resources used for sending the uplink signals, the transmission power of the uplink signals within the range of the time-frequency resources of the zero-power reference signals is zero.

In this embodiment, the communication apparatus may further include a receiving module 1103, where the receiving module 1103 is configured to receive configuration information of a zero-power reference signal from a network device.

In this embodiment of the present application, the processing module 1101 may be further configured to generate an uplink signal including a zero power reference signal according to the configuration information of the zero power reference signal.

In an optional implementation manner, the zero power reference signal is a zero power reference signal corresponding to a serving cell of the terminal device; and the time-frequency resources of the zero-power reference signals corresponding to each cell in a cell group consisting of the serving cell and the adjacent cells of the serving cell are not overlapped with each other.

In an optional embodiment, the configuration information of the zero power reference information includes at least one of the following information:

at least one subcarrier where each zero power reference signal is located;

In an optional implementation manner, when the number of REs occupied by each zero-power reference signal is 1, the time domain symbol in which the 1 RE is located is a starting time domain symbol of a time domain symbol range allowed to be occupied by each zero-power reference signal;

In an optional implementation manner, the number of REs occupied by the zero-power reference signal of the serving cell of the terminal device is 1, and the number of REs occupied by the zero-power reference signal of the neighboring cell of the serving cell of the terminal device is 1;

In an optional implementation manner, the number of REs occupied by the zero-power reference signal corresponding to a target cell is 2, where the target cell is any one of a serving cell of the terminal device and an adjacent cell of the serving cell;

In an optional implementation manner, the time-frequency resource unit for transmitting the uplink signal includes 12 subcarriers; a frequency domain offset FreqOffset of a first subcarrier corresponding to any target cell among the serving cell and neighbor cells of the serving cell is determined according to a cell identification CID of the target cell,

when mod (CID, Q) < 6, FreqOffset ═ mod (CID, Q) × 2;

when mod (CID, Q) is 6, FreqOffset is 11;

In an alternative embodiment, the number of REs occupied by each zero-power reference signal is 2;

In an optional embodiment, when the distribution mode of the time domain symbols in which the 2 REs are located is the second distribution mode, the time domain symbols in which the 2 REs are located are determined according to the cell identifier of the serving cell of the terminal device; wherein,

In an optional implementation manner, when the distribution manner of the time domain symbols where the 2 REs are located is the first distribution manner, a subcarrier offset between a first subcarrier and a second subcarrier where the 2 REs are located is 1, 3, or 5; or,

In an optional embodiment, in one time-frequency resource unit for transmitting the uplink signal, the number of the zero power reference signals is 2;

In an optional embodiment, when the subcarriers in which the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers in which the 2 zero-power reference signals are located is 1, 3 or 5.

In an optional embodiment, the time-frequency resource of the zero-power reference signal includes: p REs located on a time domain symbol to be processed in one time-frequency resource unit for transmitting the uplink signal;

the processing module is further configured to: acquiring first data to be transmitted, wherein the first data are k-P data segmentsx₁，x₂，...，x_k-pEach RE is used for carrying data in 1 data segment; transforming the moment W according to the first data and DFT_12×kDetermining second data, wherein the second data x_k-p+1，...，x_kSatisfies the following conditions:

forming the first data and the second data into time domain data x, wherein x ═ x (x)₁，x₂，...，x_k)^T(ii) a According to the DFT transformation moment W_12×kPerforming DFT on the time domain data x to obtain frequency domain data y; wherein y ═ y₁，y₂，y₃，...，y₈，y₉，y₁₀，y₁₁，y₁₂)^TThe uplink signals on the P REs

Are all 0; taking the frequency domain data y as an uplink signal in a time domain symbol to be processed; and k is the number of the time domain symbols in the time frequency resource unit, and k is larger than p.

the number of the group resource units in each group resource.

a CDM configuration type of the DMRS is a third CDM type;

the time frequency resource of the zero power reference signal comprises a set of time frequency resources of all CDM group DMRSs corresponding to CDM configuration types, wherein the set of time frequency resources of the DMRS is used for removing the time frequency resource of the DMRS of the uplink signal, the time frequency resource of the DMRS is determined from a group resource set according to CDM group IDs corresponding to the DMRS, the group resource set comprises a plurality of group resources, different CDM group IDs correspond to different group resources in the group resource set, and time domain symbols of at least two group resources in the group resources are different; all subcarriers in which DMRSs of all CDM groups are located are part of subcarriers in a time-frequency resource unit for transmitting uplink signals. The time domain symbols where the DMRSs corresponding to the at least two CDM groups supported by the third CDM type are located are different.

each group resource unit occupies at least one time domain symbol;

each group resource unit occupies at least one subcarrier;

each group resource unit occupies 2 continuous time domain symbols;

each group resource unit occupies 2 continuous sub-carriers;

In a second alternative embodiment of the communication device 1100:

the processing module 1101 may be configured to instruct the transmitting module 1102 to transmit the DMRS to the network device;

each group resource unit occupies 2 continuous time domain symbols;

each group resource unit occupies 2 continuous sub-carriers;

Fig. 24 is a schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 12, the communication apparatus 1200 includes: a processing module 1201 and a receiving module 1203.

In a first alternative implementation of the communication device 1200:

a receiving module 1203, configured to receive an uplink signal that includes a zero-power reference signal and is sent by a terminal device, where in a time-frequency resource used for sending the uplink signal, a transmission power of the uplink signal within a range of the time-frequency resource of the zero-power reference signal is zero;

a processing module 1201, configured to perform channel estimation according to the uplink signal received in the time-frequency resource of the zero-power reference signal; and demodulating the received uplink signal according to the result of the channel estimation.

In this embodiment, the apparatus 1200 may further include: a sending module 1202, configured to send configuration information of a zero power reference signal to a terminal device. In this embodiment of the application, the apparatus 1200 may further include a storage module 1204 for storing relevant data and instructions.

at least one subcarrier where each zero power reference signal is located;

In an optional implementation manner, the number of REs occupied by the zero-power reference signal of the serving cell of the terminal device is 1, and the number of REs occupied by the zero-power reference signal of the neighboring cell of the serving cell of the terminal device is 1; the first subcarriers corresponding to the serving cell and the neighboring cells of the serving cell are different, and the first subcarrier is a subcarrier where a zero-power reference signal is located.

In an optional implementation manner, the number of REs occupied by the zero-power reference signal corresponding to a target cell is 2, where the target cell is any one of a serving cell of the terminal device and an adjacent cell of the serving cell; a first subcarrier and a second subcarrier corresponding to the target cell are not adjacent to each other, and the first subcarrier and the second subcarrier are subcarriers where the 2 REs corresponding to the target cell are located; and the sub-carriers occupied by the zero power reference signals corresponding to different target cells in the same time domain symbol are different.

when mod (CID, Q) < 6, FreqOffset ═ mod (CID, Q) × 2;

when mod (CID, Q) is 6, FreqOffset is 11;

In an optional implementation manner, when the distribution manner of the time domain symbols where the 2 REs are located is the first distribution manner, a subcarrier offset between a first subcarrier and a second subcarrier where the 2 REs are located is 1, 3, or 5; or when the distribution mode of the time domain symbols in which the 2 REs are located is the second distribution mode, the subcarrier offset between the first subcarrier and the second subcarrier in which the 2 REs are located is 2, 4, or 6.

In an optional embodiment, in one time-frequency resource unit for transmitting the uplink signal, the number of the zero power reference signals is 2; the subcarriers in which the time frequency resources of the 2 zero power reference signals are located are the same or different.

the number of the group resource units in each group resource.

a CDM configuration type of the DMRS is a third CDM type;

In one possible implementation form of the method,

the time-frequency resource unit used for sending the uplink signal containing the DMRS is a Resource Block (RB), and any RB comprises 2 or 3 or 4 group resource units;

each group resource unit occupies 2 continuous time domain symbols;

each group resource unit occupies 2 continuous sub-carriers;

In a second alternative implementation of the communication device 1200:

a receiving module 1203, configured to receive the DMRS sent by the terminal device; the time-frequency resource of the DMRS is determined from a group resource set according to a first identifier corresponding to the terminal device, wherein the group resource set comprises a plurality of group resources, different first identifiers correspond to different group resources in the group resource set, and time-domain symbols in which at least two group resources in the plurality of group resources are located are different.

And a processing module 1201, configured to demodulate the received uplink signal including the DMRS according to the DMRS.

In one possible implementation, each group resource includes at least two group resource units; the time domain symbols occupied by the at least two group resource units are the same, and the subcarriers occupied by the at least two group resource units are different;

each group resource unit occupies 2 continuous time domain symbols;

each group resource unit occupies 2 continuous sub-carriers;

Fig. 25 is a first schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in fig. 25, an apparatus 1300 of the present embodiment may be a terminal device in the foregoing method embodiment, and the apparatus 1300 may be configured to perform part or all of the functions of the terminal device in the foregoing method embodiment. The apparatus 1300 may include: the processor 1310, the baseband circuitry 1313, the rf circuitry 1340, and the antenna 1350, and optionally the apparatus 1300 may also include a memory 1320. The various components of the device 1300 are coupled together by a bus 1360, which includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are designated in the figure as the bus system 1360.

The processor 1310 may be used to implement control of the terminal device, to perform the processing performed by the terminal device in the above embodiments, may perform the processing procedures described above in the method embodiments involving the terminal device and/or other procedures for the techniques described herein, may also run an operating system, be responsible for managing the bus, and may execute programs or instructions stored in the memory.

Baseband circuitry 1313, radio frequency circuitry 1340, and antenna 1350 may be used to support wireless communications for terminal devices and network devices involved in the above-described embodiments.

In one example, a frame to be transmitted, which is sent from a network device and encapsulated by a PHY layer, is received by an antenna 1350, is subjected to filtering, amplification, down-conversion, digitization, and the like by an rf circuit 1340, is then subjected to baseband processing, such as decoding by a baseband circuit 1313, decapsulating data according to a protocol, and the like, and is processed by a processor 1310 to recover service data and signaling information sent by the network device; in another example, the access control information of the cell carried by the terminal device may be processed by the processor 1310, processed by the baseband circuit 1313 according to a protocol, and further processed by the rf circuit 1340 through analog conversion, filtering, amplification, and frequency up-conversion, and then transmitted to the network device through the antenna 1350.

Memory 1320 may be used to store program codes and data for the terminal device, and memory 1320 may be the memory module in fig. 11. It is to be understood that the baseband circuit 1313, the radio frequency circuit 1340, and the antenna 1350 can also be used for supporting the terminal device to communicate with other network entities, for example, for supporting a network element on the core network side of the terminal device to communicate. The memory 1320 is shown in fig. 13 as being separate from the processor 1310, however, one skilled in the art will readily appreciate that the memory 1320, or any portion thereof, may be located external to the apparatus 1300. The memory 1320 may comprise, for example, a transmission line, and/or a computer product separate from the wireless node, which may be accessed by the processor 1310 through the bus interface 1360. Alternatively, the memory 1320, or any portion thereof, may be integrated into the processor 1310, such as may be a cache and/or general purpose registers.

It will be appreciated that fig. 13 only shows a simplified design of the terminal device. For example, in practical applications, the terminal device may comprise any number of transmitters, receivers, processors, memories, etc., and all first nodes that may implement the present invention are within the scope of the present invention.

It should be noted that, when serving as a receiving end, the apparatus 1300 may also be configured to perform some or all of the functions of the terminal device in the foregoing method embodiments.

Fig. 26 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 26, an apparatus 1400 of the present application may be a network device in the foregoing method embodiment. The apparatus 1400 may be used to perform some or all of the functions of the network device in the above-described method embodiments. The apparatus 1400 may include: a processor 1410, baseband circuitry 1414, rf circuitry 1440, and an antenna 1450, the apparatus 1400 may optionally also include a memory 1420. The various components of the device 1400 are coupled together by a bus 1460, wherein the bus system 1460 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are designated in the figure as bus system 1460.

The processor 1410 may be used to implement control of the network device, to perform the processing performed by the network device in the above embodiments, may perform the processing procedures described above in the method embodiments involving the network device and/or other procedures for the techniques described herein, may also run an operating system, is responsible for managing the bus, and may execute programs or instructions stored in memory.

The baseband circuitry 1414, radio frequency circuitry 1440, and antenna 1450 may be used to support wireless communications for network devices and terminal devices as referred to in the embodiments above.

In one example, a frame to be transmitted, which is sent from a network device and encapsulated by a PHY layer, is received by an antenna 1450, is subjected to filtering, amplification, down-conversion, digitization, and the like by a radio frequency circuit 1440, is subjected to baseband processing such as decoding by a baseband circuit 1414, decapsulating data according to a protocol, and the like, and is processed by a processor 1410 to recover service data and signaling information sent by the network device; in another example, the configuration information sent by the network device may be processed by the processor 1410, processed by the baseband circuit 1414 for baseband processing such as protocol encapsulation, encoding, and the like, further processed by the rf circuit 1440 for rf processing such as analog conversion, filtering, amplification, and frequency up-conversion, and then sent to the terminal device via the antenna 1450.

Memory 1420 may be used to store program codes and data for network devices, and memory 1420 may be the memory module in fig. 12. It will be appreciated that the baseband circuitry 1414, the radio frequency circuitry 1440, and the antenna 1450 may also be used to support communication of network devices with other network entities, for example, to support communication of network devices with network elements on the core network side. Memory 1420 is shown in fig. 14 as being separate from processor 1410, however, those skilled in the art will readily appreciate that memory 1420, or any portion thereof, may be located external to apparatus 1400. For example, memory 1420 may comprise a transmission line, and/or a computer article separate from the wireless node, which may be accessed by processor 1410 via bus interface 1460. Alternatively, the memory 1420, or any portion thereof, may be integrated into the processor 1410, e.g., may be a cache and/or general purpose registers.

It will be appreciated that fig. 14 only shows a simplified design of the network device. For example, in practical applications, the network device may include any number of transmitters, receivers, processors, memories, etc., and all network devices that can implement the present invention are within the scope of the present invention.

It should be noted that, when serving as a receiving end, the apparatus 1400 may also be configured to perform some or all of the functions of the terminal device in the foregoing method embodiments.

An embodiment of the present application further provides a chip system, including: a processor coupled to a memory, the memory for storing a program or instructions, which when executed by the processor, causes the system-on-chip to implement the method in any of the method embodiments described above.

Optionally, the system on a chip may have one or more processors. The processor may be implemented by hardware or by software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory.

Optionally, the memory in the system-on-chip may also be one or more. The memory may be integrated with the processor or separate from the processor, which is not limited in this application. For example, the memory may be a non-transitory processor, such as a read only memory ROM, which may be integrated with the processor on the same chip or may be separately disposed on different chips.

The system-on-chip may be, for example, a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other integrated chips.

It will be appreciated that the steps of the above described method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

The embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores computer-readable instructions, and when the computer reads and executes the computer-readable instructions, the computer is caused to execute the method in any of the above method embodiments.

The embodiments of the present application further provide a computer program product, which when read and executed by a computer, causes the computer to execute the method in any of the above method embodiments.

The embodiment of the application also provides a communication system, which comprises network equipment and terminal equipment. The network device and the terminal device may perform any of the methods described above.

It should be understood that the processor mentioned in the embodiments of the present application may be a Central Processing Unit (CPU), and may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory referred to in the embodiments of the application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, the memory (memory module) is integrated into the processor.

It should be understood that, without conflict, the embodiments and/or technical features of the embodiments described in the present application may be arbitrarily combined with each other, and the technical solutions obtained after the combination also fall within the protection scope of the present application.

For details and technical effects of other technical solutions in the embodiments of the present application, reference may be made to the description in other embodiments of the present application.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described herein, in whole or in part, to occur. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, and the like, integrated with the available medium. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk), among others.

Claims

1. An uplink transmission method, comprising:

2. The method of claim 1, wherein the configuration information of the zero power reference information comprises at least one of the following information:

at least one subcarrier where each zero power reference signal is located;

and when the subcarriers in which the 2 zero-power reference signals are located are different, the subcarrier offset between the subcarriers in which the 2 zero-power reference signals are located.

3. The method according to claim 1 or 2,

when the number of REs occupied by each zero-power reference signal is 1, the time domain symbol in which the 1 RE is located is a starting time domain symbol of a time domain symbol range allowed to be occupied by each zero-power reference signal;

wherein the uplink signal further comprises a DMRS; each of the zero-power reference signals allows a starting time domain symbol of an occupied time domain symbol to be any one of:

4. The method of claim 3, wherein the number of REs occupied by zero-power reference signals of the serving cell of the terminal device is 1, and the number of REs occupied by zero-power reference signals of neighboring cells of the serving cell of the terminal device is 1;

the first subcarriers corresponding to the serving cell and the neighboring cells of the serving cell are different, and the first subcarrier is a subcarrier where a zero-power reference signal is located.

5. The method of claim 3, wherein the number of REs occupied by the zero-power reference signal corresponding to a target cell is 2, and the target cell is any one of a serving cell of the terminal device and a neighboring cell of the serving cell;

6. The method according to claim 4 or 5, wherein the time-frequency resource unit for transmitting the uplink signal comprises 12 subcarriers; a frequency domain offset FreqOffset of a first subcarrier corresponding to any target cell among the serving cell and neighboring cells of the serving cell is determined according to a cell identification CID of the target cell,

when mod (CID, Q) < 6, FreqOffset ═ mod (CID, Q) × 2;

when mod (CID, Q) is 6, FreqOffset is 11;

7. The method according to any of claims 3, 5-6, wherein the number of REs occupied by each of the zero-power reference signals is 2;

8. The method according to claim 7, wherein when the distribution manner of the time domain symbols in which the 2 REs are located is a second distribution manner, the time domain symbols in which the 2 REs are located are determined according to a cell identifier of a serving cell of the terminal device; wherein,

9. The method according to any of claims 1-2, wherein the configuration information of the zero-power reference signal comprises at least one of the following information:

a CDM configuration type of the DMRS; wherein the CDM configuration type of the DMRS comprises: a first CDM type, a second CDM type, a third CDM type; the time frequency resources of the DMRS are determined from a group resource set according to CDM group IDs corresponding to the DMRS, wherein the group resource set comprises a plurality of group resources, different CDM group IDs correspond to different group resources in the group resource set, and time domain symbols in which at least two group resources in the plurality of group resources are located are different;

the number of the group resource units in each group resource.

10. The method according to claim 1 or 9, wherein the subcarriers in which the zero-power reference signals are located are some subcarriers of the time-frequency resource unit for transmitting uplink signals.

11. The method of claim 10, wherein the configuration of the CDM group-capable zero-power reference signals is a second configuration;

a CDM configuration type of the DMRS is a third CDM type;

the time frequency resource of the zero power reference signal comprises a set of time frequency resources of all CDM group DMRSs corresponding to CDM configuration types, wherein the set of time frequency resources of the CDM group DMRS removes the time frequency resource of the DMRS of the uplink signal, the time frequency resource of the DMRS is determined from a group resource set according to CDM group IDs corresponding to the DMRS, the group resource set comprises a plurality of group resources, different CDM group IDs correspond to different group resources in the group resource set, and time domain symbols of at least two group resources in the plurality of group resources are different; all subcarriers in which DMRSs of all CDM groups are located are part of subcarriers in a time-frequency resource unit for transmitting uplink signals.

12. The method of claim 11, wherein each group resource comprises at least two group resource units;

13. The method of claim 12, wherein the time-frequency resource elements used for transmitting the uplink signal including the DMRS are Resource Blocks (RBs), and wherein any of the RBs comprises 2, 3 or 4 group resource elements;

each group resource unit occupies 2 continuous time domain symbols;

each group resource unit occupies 2 continuous sub-carriers;

the number of time domain symbols occupied by all the group resource units of CDM groupID is 6;

the number of subcarriers occupied by the group resource unit of all CDM groupID is 4.

14. The method according to any of claims 1-13, wherein a difference between transmission powers of different time domain symbols in a time-frequency resource unit for transmitting the uplink signal is smaller than a preset offset power threshold.

15. The method of claim 14, wherein transmission power of different time domain symbols is equal in time-frequency resources used for transmitting the uplink signal.

16. The method of claim 15, wherein the time-frequency resource unit for transmitting the uplink signal is a Resource Block (RB); in any target time domain symbol containing REs occupied by the zero-power reference signal, the transmission power of each effective RE is the transmission power of the target time domain symbol divided by the number of effective REs;

17. The method of claim 16, wherein REs except for REs occupied by the zero-power reference signal on a target time domain symbol where the zero-power reference signal is located are data REs for carrying data.

18. An uplink transmission method, comprising:

19. The method of claim 18, wherein the configuration information of the zero power reference information comprises at least one of the following information:

at least one subcarrier where each zero power reference signal is located;

20. The method of claim 18 or 19,

21. The method of claim 20, wherein the number of REs occupied by zero-power reference signals of the serving cell of the terminal device is 1, and the number of REs occupied by zero-power reference signals of neighboring cells of the serving cell of the terminal device is 1;

22. The method of claim 21, wherein the number of REs occupied by the zero-power reference signal corresponding to a target cell is 2, and the target cell is any one of a serving cell of the terminal device and a neighboring cell of the serving cell;

23. The method according to claim 21 or 22, wherein the time-frequency resource unit for transmitting the uplink signal comprises 12 subcarriers; a frequency domain offset FreqOffset of a first subcarrier corresponding to any target cell among the serving cell and neighboring cells of the serving cell is determined according to a cell identification CID of the target cell,

when mod (CID, Q) < 6, FreqOffset ═ mod (CID, Q) × 2;

when mod (CID, Q) is 6, FreqOffset is 11;

24. The method according to any of claims 20, 21-23, wherein the number of REs occupied by each of said zero-power reference signals is 2;

25. The method of claim 24, wherein when the distribution manner of the time domain symbols in which the 2 REs are located is a second distribution manner, the time domain symbols in which the 2 REs are located are determined according to a cell identifier of a serving cell of the terminal device; wherein,

26. The method according to any of claims 18-19, wherein the configuration information of the zero-power reference signal comprises at least one of the following information:

the number of the group resource units in each group resource.

27. The method according to claim 18 or 26, wherein the subcarriers in which the zero-power reference signals are located are some subcarriers of the time-frequency resource unit for transmitting uplink signals.

28. The method of claim 27, wherein the configuration of the CDM group-capable zero-power reference signals is a second configuration;

a CDM configuration type of the DMRS is a third CDM type;

29. The method of claim 28, wherein each group resource comprises at least two group resource units;

30. The method of claim 29, wherein the time-frequency resource elements used for transmitting the uplink signal including the DMRS are resource blocks, RBs, and wherein any of the RBs comprises 2, 3 or 4 groups of resource elements;

each group resource unit occupies 2 continuous time domain symbols;

each group resource unit occupies 2 continuous sub-carriers;

31. A method for transmitting a reference signal, comprising:

terminal equipment sends DMRS to network equipment;

32. The method of claim 31, wherein the first identifier is an identifier of a CDM group to which the terminal device corresponds.

33. The method of claim 32, wherein each group resource comprises at least two group resource units;

34. The method of claim 33, wherein the time-frequency resource elements used for transmitting the uplink signal including the DMRS are resource blocks, RBs, and wherein any of the RBs comprises 2, 3 or 4 groups of resource elements;

each group resource unit occupies 2 continuous time domain symbols;

each group resource unit occupies 2 continuous sub-carriers;

35. A method for transmitting a reference signal, comprising:

36. The method of claim 35, wherein the first identifier is an identifier of a CDM group to which the terminal device corresponds.

37. The method of claim 36, wherein each group resource comprises at least two group resource units;

each group resource unit occupies at least one time domain symbol;

each group resource unit occupies at least one subcarrier.

38. The method of claim 37, wherein the time-frequency resource elements used for transmitting the uplink signal including the DMRS are Resource Blocks (RBs), and wherein any of the RBs comprises 2, 3 or 4 groups of resource elements;

each group resource unit occupies 2 continuous time domain symbols;

each group resource unit occupies 2 continuous sub-carriers;

39. A communications device arranged to perform the method of any of claims 1 to 17 and/or 31 to 34.

40. A communications device arranged to perform the method of any of claims 18 to 30 and/or 35 to 38.

41. A computer storage medium comprising a computer program which, when executed on a communication apparatus, causes the communication apparatus to perform the method of any one of claims 1-38.