Communication method and device

Abstract

The invention discloses a communication method and device, relates to the technical field of communication, and can improve the performance of communication systems when different communication systems share frequency spectrums. The method comprises the following steps: receiving first information from network equipment, and determining a time domain resource and a frequency domain resource which are not used for first channel transmission according to the first information; wherein the first information is used for indicating a time domain resource and a frequency domain resource which are not used for first channel transmission; the first information indicates that the frequency domain resources not used for the first channel transmission comprise one or more subcarriers not used for the first channel transmission in one or more RBs (Resource Blocks) indicated by the first information; the first channel is a physical uplink shared channel or a physical downlink shared channel.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method and apparatus. Background Art

[0002] Spectrum sharing can be performed between different communication systems. For example, spectrum sharing can be performed between a Long Term Evolution (LTE) communication system and a New Radio (NR) communication system, and spectrum sharing can also be performed between an NR communication system and a future communication system to improve the utilization rate of spectrum resources.

[0003] Among them, when the LTE communication system and the NR communication system perform spectrum sharing, some downlink reference signals or downlink channels in the LTE communication system are continuously transmitted. The Physical Downlink Shared Channel (PDSCH) of the NR communication system will conflict with these downlink reference signals or downlink channels of the LTE communication system and cause interference, affecting the communication performance of the LTE communication system. Based on this, the NR communication system introduces a Rate Match (RM) mechanism to solve the conflict between the LTE communication system and the NR communication system and improve the communication performance.

[0004] However, the above solution is applicable to improving the communication performance between the LTE communication system and the NR communication system, and is not applicable to improving the communication performance between other communication systems (such as the NR communication system and the future communication system). Therefore, when the NR communication system and the future communication system perform spectrum sharing, how to improve the communication performance becomes a technical problem to be solved urgently. Summary of the Invention

[0005] This application provides a communication method and apparatus, which can improve the communication performance when different communication systems perform spectrum sharing.

[0006] In a first aspect, the present application provides a communication method, which can be executed by a terminal device. Without special indication, the "terminal device" in the present application can refer to the terminal device itself, or a component in the terminal device (such as a processor, a chip, or a chip system, etc.), or can also refer to a logic module or software that can implement all or part of the functions of the terminal device. This method is applied to a first radio access technology (RAT), and the method includes: receiving first information from a network device, and determining time-domain resources and frequency-domain resources that are not used for the transmission of a first channel according to the first information. Wherein, the first information is used to indicate the time-domain resources and frequency-domain resources that are not used for the transmission of the first channel; the frequency-domain resources indicated by the first information that are not used for the transmission of the first channel include that the first information indicates one or more subcarriers in one or more resource blocks (RBs) that are not used for the transmission of the first channel; the first channel is a physical uplink shared channel or a physical downlink shared channel.

[0007] Based on the first aspect, the terminal device can determine the time-domain resources and frequency-domain resources that are not used for the transmission of the first channel according to the first information, thereby avoiding signal conflicts and being able to improve the performance of the communication system when spectrum sharing is performed in different communication systems.

[0008] In a possible design, the first information includes configuration information of one or more rate matching patterns; wherein, the time-frequency resources associated with the rate matching pattern are the time-domain resources and frequency-domain resources that are not used for the transmission of the first channel.

[0009] Based on this possible design, the network device can configure the time-domain resources and frequency-domain resources that are not used for the transmission of the first channel to the terminal device in the form of a rate matching pattern based on the rate matching mechanism.

[0010] In a possible design, the configuration information of each rate matching pattern includes first indication information and second indication information; wherein, the first indication information is used to indicate one or more RBs associated with the rate matching pattern, and the second indication information is used to indicate one or more subcarriers in one or more RBs associated with the rate matching pattern.

[0011] Based on this possible design, different indication information can be used to indicate RBs and subcarriers respectively, providing a feasible solution for the design of the configuration information of the rate matching pattern.

[0012] In a possible design, the first indication information is a bitmap, and each bit in the bitmap is used to indicate whether the RB corresponding to each bit belongs to the rate matching pattern.

[0013] Based on this possible design, a feasible solution is provided for the design of the first indication information. It can be understood that the bitmap is a manifestation of the first indication information, and the first indication information can also be any manifestation that can be used to indicate one or more RBs associated with the rate matching pattern, without limitation.

[0014] In a possible design, for each rate matching pattern, the second indication information is used to indicate the subcarrier pattern commonly associated with all the RBs associated with the rate matching pattern, where the subcarrier pattern includes one or more subcarriers in one RB.

[0015] Based on this possible design, the subcarrier patterns associated with each RB among all the RBs associated with the same rate matching pattern are the same. The second indication information can indicate one or more subcarriers associated with the rate matching pattern by indicating a subcarrier pattern, which can reduce the signaling overhead.

[0016] In a possible design, for each rate matching pattern, the second indication information is used to indicate the subcarrier patterns respectively associated with all the RBs associated with the rate matching pattern, where the subcarrier pattern includes one or more subcarriers in one RB.

[0017] Based on this possible design, the subcarrier patterns associated with each RB are indicated separately. The subcarrier patterns associated with any two RBs among all the RBs associated with the same rate matching pattern can be the same or different. The second indication information can indicate the subcarrier patterns associated with each RB, which can improve the indication flexibility of the subcarriers associated with the rate matching pattern and improve the communication performance.

[0018] In a possible design, the configuration information of each rate matching pattern includes a third indication information; where the third indication information is used to indicate one or more RBs associated with the rate matching pattern and one or more subcarriers associated in the one or more RBs.

[0019] Based on this possible design, the RB and the subcarrier can also be indicated by the same indication information, providing another feasible solution for the design of the configuration information of the rate matching pattern.

[0020] In a possible design, the third indication information includes N*M bits, N is the number of RBs corresponding to the third indication information, and each RB corresponds to M bits; the M bits corresponding to each RB are used to indicate whether the RB corresponding to the M bits belongs to the rate matching pattern and the subcarrier pattern associated with the RB.

[0021] In a possible design, the first value of M bits is used to indicate that the RBs corresponding to the M bits do not belong to the rate matching pattern; or, the second value of M bits is used to indicate that the RBs corresponding to the M bits belong to the rate matching pattern and the RBs are associated with the first subcarrier pattern; or, the third value of M bits is used to indicate that the RBs corresponding to the M bits belong to the rate matching pattern and the RBs are associated with the second subcarrier pattern; or, the fourth value of M bits is used to indicate that the RBs corresponding to the M bits belong to the rate matching pattern and the RBs are associated with the third subcarrier pattern; or, the fifth value of M bits is used to indicate that the RBs corresponding to the M bits belong to the rate matching pattern and the RBs are associated with the fourth subcarrier pattern.

[0022] Based on this possible design, multiple feasible solutions are provided for the value setting of M bits.

[0023] In a possible design, the subcarrier pattern is one of the following subcarrier patterns: the first subcarrier pattern, where the first subcarrier pattern includes all the subcarriers in an RB; the second subcarrier pattern, where the second subcarrier pattern includes the 1st, 3rd, 5th, 7th, 9th, and 11th subcarriers in an RB; the third subcarrier pattern, where the third subcarrier pattern includes the 1st, 2nd, 7th, and 8th subcarriers in an RB; the fourth subcarrier pattern, where the fourth subcarrier pattern includes the 1st, 2nd, 3rd, 4th, 7th, 8th, 9th, and 10th subcarriers in an RB.

[0024] Based on this possible design, for the frequency-domain resources of the rate matching pattern of the first RAT, they can be defined in combination with the design of the frequency-domain resources of the DMRS of the second channel of the second RAT. Thus, when the first RAT and the second RAT perform spectrum sharing, the first channel of the first RAT does not transmit on the frequency-domain resources of the DMRS of the second channel of the second RAT, or the second channel of the second RAT does not transmit on the frequency-domain resources of the DMRS of the first channel of the first RAT, maintaining the orthogonality of the DMRS and improving the communication performance.

[0025] In a possible design, the configuration information of each rate matching pattern further includes fourth indication information; where the fourth indication information is used to indicate the time-domain period of the rate matching pattern and the time-domain resource pattern within the period.

[0026] In a possible design, the configuration information of each rate matching pattern may include tenth indication information, and the tenth indication information is used to indicate the symbols associated with the rate matching pattern in one or more time slots / subframes.

[0027] In a possible design, the selected values of the time-domain period include one or more of the following: 1, 2, 4, 5, 8, 10, 20, 40, 80, 160, or 320 time units. Each time unit includes one or more time slots or sub-frames corresponding to the rate matching pattern. For example, each time unit may include one or more time slots / sub-frames corresponding to the above-mentioned tenth indication information.

[0028] Based on the above three possible designs, for the time-domain resources of the rate matching pattern of the first RAT, they can be defined in combination with the time-domain resources design of the DMRS of the second channel of the second RAT. Thus, when the first RAT and the second RAT perform spectrum sharing, the first channel of the first RAT does not transmit on the time-domain resources of the DMRS of the second channel of the second RAT, or the second channel of the second RAT does not transmit on the time-domain resources of the DMRS of the first channel of the first RAT, maintaining the orthogonality of the DMRS and improving the communication performance.

[0029] In a possible design, the rate matching pattern is a rate matching pattern exclusive to the bandwidth part BWP; or, the rate matching pattern is a cell-common rate matching pattern.

[0030] Based on this possible design, if a certain rate matching pattern is configured for a certain BWP, then the rate matching pattern takes effect for the associated BWP, or is described as taking effect for the first channel on the associated BWP. If a certain rate matching pattern is configured for a certain serving cell, then the rate matching pattern can take effect for all BWPs of the serving cell, or is described as taking effect for the first channel on all BWPs of the serving cell.

[0031] In a possible design, the method further includes: receiving fifth indication information from a network device; wherein, the fifth indication information is used to indicate the rate matching pattern that takes effect among one or more rate matching patterns.

[0032] In a possible design, the one or more subcarriers indicated by the first information include all the subcarriers in an RB; or, the one or more subcarriers indicated by the first information include the 1st, 3rd, 5th, 7th, 9th, and 11th subcarriers in an RB; or, the one or more subcarriers indicated by the first information include the 1st, 2nd, 7th, and 8th subcarriers in an RB; or, the one or more subcarriers indicated by the first information include the 1st, 2nd, 3rd, 4th, 7th, 8th, 9th, and 10th subcarriers in an RB.

[0033] In a possible design, the time-domain resources and the frequency-domain resources are determined according to the demodulation reference signal DMRS of the second channel of the second RAT; wherein, the second channel is a physical uplink shared channel or a physical downlink shared channel.

[0034] Based on this possible design, the time-domain resources and frequency-domain resources of the rate matching pattern for the first RAT can be defined in combination with the time-domain resource design of the DMRS of the second channel of the second RAT. Thus, when the first RAT and the second RAT perform spectrum sharing, the first channel of the first RAT does not transmit on the time-frequency resources of the DMRS of the second channel of the second RAT, or the second channel of the second RAT does not transmit on the time-frequency resources of the DMRS of the first channel of the first RAT, maintaining the orthogonality of the DMRS and improving the communication performance.

[0035] In a second aspect, the present application provides a communication method, which can be executed by a network device. Without special explanation, the "network device" in the present application can refer to the network device itself, or a component in the network device (such as a processor, a chip, or a chip system, etc.), or can also refer to a logical module or software that can implement all or part of the functions of the network device. This method is applied to the first RAT, and the method includes: determining first information; sending the first information to a terminal device; where the first information is used to indicate the time-domain resources and frequency-domain resources not used for the transmission of the first channel, and the frequency-domain resources indicated by the first information not used for the transmission of the first channel include one or more subcarriers in one or more resource blocks (RBs) not used for the transmission of the first channel; the first channel is a physical uplink shared channel or a physical downlink shared channel.

[0036] Based on the second aspect, the network device can indicate to the terminal device the time-domain resources and frequency-domain resources not used for the transmission of the first channel through the first information, thereby avoiding signal conflicts and being able to improve the performance of the communication system when spectrum sharing is performed in different communication systems.

[0037] In a possible design, the first information includes configuration information of one or more rate matching patterns; where the time-frequency resources associated with the rate matching pattern are the time-domain resources and frequency-domain resources not used for the transmission of the first channel.

[0038] Based on this possible design, the network device can, based on the rate matching mechanism, configure the time-domain resources and frequency-domain resources not used for the transmission of the first channel to the terminal device in the form of a rate matching pattern.

[0039] In a possible design, the method further includes: sending fifth indication information to the terminal device; where the fifth indication information is used to indicate the rate matching pattern that takes effect among one or more rate matching patterns.

[0040] It can be understood that the description of the first information in the second aspect can refer to the relevant description of the first information in the above first aspect or any possible design of the first aspect, and will not be elaborated here.

[0041] In a third aspect, the present application provides a communication method, which can be executed by a terminal device. Without special indication, the "terminal device" in the present application may refer to the terminal device itself, or a component in the terminal device (such as a processor, a chip, or a chip system, etc.), or may also refer to a logical module or software that can implement all or part of the functions of the terminal device. This method is applied to a first RAT, and the method includes: receiving second information from a network device; the second information may include configuration information of one or more demodulation reference signals (DMRSs) of a second channel of a second RAT; the second channel is a physical uplink shared channel or a physical downlink shared channel; determining, according to the second information, time-frequency resources associated with the second information, and the time-frequency resources associated with the second information are not used for the transmission of a first channel of the first RAT; the first channel is a physical uplink shared channel or a physical downlink shared channel.

[0042] Based on the third aspect, the network device can directly configure the configuration information of the DMRS that needs to perform rate matching to the terminal device through the second information, and the terminal device determines the time-frequency resources of the DMRS according to the configuration information of the DMRS, and then can determine the time-frequency resources that are not used for the transmission of the first channel of the first RAT. That is, when the first RAT and the second RAT perform spectrum sharing, the first channel of the first RAT and the second channel of the second RAT can adopt a time-division multiplexing method for transmission. The first channel of the first RAT is silent on the time-frequency resources of the DMRS of the second channel of the second RAT, or in other words, the first channel of the first RAT does not send data on the time-frequency resources of the DMRS of the second channel of the second RAT, avoiding the interference of the data transmission of the first channel of the first RAT on the DMRS transmission of the second channel of the second RAT, keeping the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT orthogonal to each other, and improving the communication performance.

[0043] In a possible design, the configuration information of each DMRS includes at least one of the following: DMRS type, number of DMRS symbols, DMRS time domain position, DMRS frequency domain resources, CDM group of DMRS without data.

[0044] Based on this possible design, multiple feasible solutions are provided for the design of the configuration information of the DMRS.

[0045] In a possible design, the method further includes: receiving sixth indication information from the network device; where the sixth indication information is used to indicate the configuration information of the DMRS that takes effect in the configuration information of one or more DMRSs.

[0046] In a possible design, at least one of the configuration information of one or more DMRSs includes seventh indication information; wherein, the seventh indication information is used to indicate that the time-frequency resources associated with the DMRS are not used for the transmission of the first channel of the first RAT.

[0047] Based on this possible design, the DMRS can be extended. For example, two types of DMRSs can be defined in the first RAT. The first type of DMRS is used for the transmission and demodulation of the first channel. The function of the second type of DMRS is different from that of the first type of DMRS. The time-frequency resources of the second type of DMRS are neither used for the transmission of the first channel nor for the demodulation of the first channel, and are only used to define the time-frequency resources that are not used for the transmission of the first channel of the first RAT. For the second type of DMRS, if the first channel is PDSCH, the terminal device makes no assumptions about the signals transmitted on the time-frequency resources of this type of DMRS. If the first channel is PUSCH, the terminal device may not send this type of DMRS. At least one of the configuration information of one or more DMRSs includes seventh indication information, and the DMRS corresponding to this seventh indication information is the second type of DMRS described above.

[0048] In a fourth aspect, the present application provides a communication method, which can be executed by a network device. Without special explanation, the "network device" in the present application can refer to the network device itself, or a component in the network device (such as a processor, a chip, or a chip system, etc.), or can also refer to a logic module or software that can implement all or part of the functions of the network device. This method is applied to the first RAT, and this method includes: determining second information; sending the second information to a terminal device; wherein, the second information includes the configuration information of one or more demodulation reference signals (DMRSs) of the second channel of the second RAT; the second channel is a physical uplink shared channel or a physical downlink shared channel; the time-frequency resources associated with the second information are not used for the transmission of the first channel of the first RAT, and the first channel is a physical uplink shared channel or a physical downlink shared channel.

[0049] Based on the fourth aspect, the network device can directly configure the configuration information of the DMRS that needs to perform rate matching to the terminal device through the second information. The terminal device determines the time-frequency resources of the DMRS according to the configuration information of the DMRS, and then can determine the time-frequency resources not used for the transmission of the first channel of the first RAT. That is, when the first RAT and the second RAT perform spectrum sharing, the first channel of the first RAT and the second channel of the second RAT can be transmitted in a time-division multiplexing manner. The first channel of the first RAT is silent on the time-frequency resources of the DMRS of the second channel of the second RAT, or in other words, the first channel of the first RAT does not send data on the time-frequency resources of the DMRS of the second channel of the second RAT, so as to avoid the data transmission of the first channel of the first RAT interfering with the DMRS transmission of the second channel of the second RAT, keep the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT orthogonal to each other, and improve the communication performance.

[0050] In a possible design, the method further includes: sending sixth indication information to the terminal device; where the sixth indication information is used to indicate the configuration information of the DMRS that takes effect in the configuration information of one or more DMRSs.

[0051] It can be understood that the description of the second information in the fourth aspect can refer to the relevant description of the second information in the above-mentioned third aspect or any possible design of the third aspect, and will not be elaborated here.

[0052] In the fifth aspect, the present application provides a communication method, which can be executed by a terminal device. Without special explanation, the "terminal device" in the present application can refer to the terminal device itself, or a component in the terminal device (such as a processor, a chip, or a chip system, etc.), or can also refer to a logic module or software that can implement all or part of the functions of the terminal device. This method is applied to the first RAT, and the method includes: receiving eighth indication information from the network device; where the eighth indication information is used to indicate the first demodulation reference signal DMRS port set, and the first DMRS port set is used for the first channel of the first RAT, and the first channel is a physical uplink shared channel or a physical downlink shared channel; receiving ninth indication information from the network device; where the ninth indication information is used to indicate the reference frequency position corresponding to the DMRS of the first channel of the first RAT, and the reference frequency position is the starting frequency position at which the DMRS of the first channel of the first RAT is generated; according to the eighth indication information and the ninth indication information, use one or more DMRS ports in the first DMRS port set to receive the DMRS of the first channel of the first RAT, where the first channel is a physical downlink shared channel; or use one or more DMRS ports in the first DMRS port set to send the DMRS of the first channel of the first RAT, where the first channel is a physical uplink shared channel.

[0053] Based on the fifth aspect, the network device can ensure that the base sequences used by the first RAT and the second RAT are the same on the same time-frequency resources by indicating the reference frequency position to the terminal device, thereby improving the performance of the communication system. At the same time, the network device can also indicate the first DMRS port set to the terminal device, so that the terminal device uses one or more DMRS ports in the first DMRS port set to receive or transmit the DMRS of the first channel of the first RAT.

[0054] In a possible design, any DMRS port in the first DMRS port set is associated with 2*Q resource blocks (RBs), where Q is a positive integer.

[0055] Based on this possible design, frequency-domain expansion of the DMRS ports can be performed to improve communication performance.

[0056] In a possible design, the first DMRS port set includes three code-division multiplexing (CDM) groups, each CDM group includes one or more DMRS ports in the first DMRS port set. Among them, any DMRS port in the first CDM group is associated with the 1st, 2nd, 7th, and 8th subcarriers of each of the 2*Q RBs, any DMRS port in the second CDM group is associated with the 3rd, 4th, 9th, and 10th subcarriers of each of the 2*Q RBs, and any DMRS port in the third CDM group is associated with the 5th, 6th, 11th, and 12th subcarriers of each of the 2*Q RBs.

[0057] Based on this possible design, when performing frequency-domain expansion on the DMRS ports, the association relationship between the DMRS ports and the subcarriers can be as shown above, providing a feasible method for the design of the subcarriers associated with the DMRS ports.

[0058] In a possible design, any DMRS port in the first DMRS port set is associated with a frequency-domain orthogonal mask (OCC) with a length of 8*Q.

[0059] Based on this possible design, frequency-domain expansion can be performed by using an OCC with a longer length in the frequency domain.

[0060] In a possible design, the first DMRS port set is associated with 4*P time-domain symbols, where P is a positive integer.

[0061] Based on this possible design, time-domain expansion of the DMRS ports can also be performed to improve communication performance.

[0062] In a possible design, any DMRS port in the first DMRS port set is associated with 2 of the 4*P time-domain symbols.

[0063] In a possible design, the first DMRS port set includes 2*P DMRS port subsets, each DMRS port subset includes one or more DMRS ports in the first DMRS port set, and each DMRS port subset is respectively associated with 2 out of 4*P time-domain symbols.

[0064] In a possible design, any DMRS port in the first DMRS port set is associated with a time-domain OCC of length 2.

[0065] In a possible design, any DMRS port in the first DMRS port set is associated with all of the 4*P time-domain symbols.

[0066] In a possible design, any DMRS port in the first DMRS port set is associated with a time-domain OCC of length 4*P.

[0067] Based on the above five possible designs, multiple feasible solutions are provided for the design of the association relationship between DMRS ports and time-domain symbols. More DMRS ports can be supported by increasing the number of time-domain symbols corresponding to the DMRS ports.

[0068] In a possible design, the ninth indication information includes the absolute radio frequency channel number corresponding to the reference frequency position; or, the ninth indication information includes the common resource block CRB index corresponding to the reference frequency position.

[0069] In a possible design, the base sequence corresponding to the DMRS port in the first DMRS port set is the same as the base sequence corresponding to the DMRS port in the second DMRS port set, where the second DMRS port set is used for the second channel of the second RAT, and the second channel is a physical uplink shared channel or a physical downlink shared channel.

[0070] In a possible design, the reference frequency position corresponding to the DMRS of the first channel of the first RAT is the same as the reference frequency position corresponding to the DMRS of the second channel of the second RAT.

[0071] Based on the above three possible designs, the reference frequency position corresponding to the DMRS of the first channel of the first RAT may not be fixed to sub - carrier 0 of CRB0, but may be indicated by the network device through the ninth indication information for the reference frequency position corresponding to the DMRS of the first channel of the first RAT, so as to ensure that the reference frequency position corresponding to the DMRS of the first channel of the first RAT is the same as the reference frequency position corresponding to the DMRS of the second channel of the second RAT, ensure that on the same time - frequency resources, the base sequences used by the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT are the same, so that the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT can maintain orthogonality to each other, and improve the performance of the communication system.

[0072] In a sixth aspect, the present application provides a communication method, which can be executed by a network device. Without special explanation, the "network device" in the present application can refer to the network device itself, or a component in the network device (such as a processor, a chip, or a chip system, etc.), or can also refer to a logic module or software that can implement all or part of the functions of the network device. This method is applied to the first RAT, and the method includes: sending eighth indication information to a terminal device; where the eighth indication information is used to indicate a first demodulation reference signal DMRS port set; the first DMRS port set is used for the first channel of the first RAT, and the first channel is a physical uplink shared channel or a physical downlink shared channel; sending ninth indication information to the terminal device; where the ninth indication information is used to indicate the reference frequency position corresponding to the DMRS of the first channel of the first RAT, and the reference frequency position is the starting frequency position at which the DMRS of the first channel of the first RAT is generated; receiving the DMRS of the first channel of the first RAT using one or more DMRS ports in the first DMRS port set according to the eighth indication information and the ninth indication information, where the first channel is a physical uplink shared channel; or, sending the DMRS of the first channel of the first RAT using one or more DMRS ports in the first DMRS port set, where the first channel is a physical downlink shared channel.

[0073] Based on the sixth aspect, the network device can ensure that the base sequences used by the first RAT and the second RAT are the same by indicating the reference frequency position to the terminal device, thereby improving the performance of the communication system. At the same time, the network device can also indicate the first DMRS port set to the terminal device so that the terminal device uses one or more DMRS ports in the first DMRS port set to receive or send the DMRS of the first channel of the first RAT.

[0074] It can be understood that the descriptions of the first DMRS port set and the ninth indication information in the sixth aspect can refer to the relevant descriptions of the first DMRS port set and the ninth indication information in the above-mentioned fifth aspect or any possible design of the fifth aspect, which will not be elaborated here.

[0075] In a seventh aspect, the present application provides a communication device. The communication device can be applied to the terminal device in the above-mentioned first aspect, third aspect or fifth aspect to implement the functions performed by the above-mentioned terminal device. The communication device can be a terminal device, or a chip or a chip system or a system-on-chip of the terminal device, etc. The communication device can perform the functions performed by the above-mentioned terminal device through hardware, or can implement the functions through hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, a transceiver module and a processing module. The transceiver module can independently complete the following transceiver operations, or can cooperate with the processing module to complete the following transceiver operations; correspondingly, the processing module can also independently complete the following processing operations, or can cooperate with the transceiver module to complete the following processing operations, without limitation.

[0076] Exemplarily, the transceiver module is used to receive first information from a network device; the processing module is used to determine, according to the first information, time domain resources and frequency domain resources not used for the transmission of a first channel. The first information is used to indicate the time domain resources and frequency domain resources not used for the transmission of the first channel; the frequency domain resources indicated by the first information not used for the transmission of the first channel include that the first information indicates one or more subcarriers not used for the transmission of the first channel in one or more resource blocks (RBs); the first channel is a physical uplink shared channel or a physical downlink shared channel.

[0077] In another example, the transceiver module is used to receive second information from a network device; the second information may include configuration information of one or more demodulation reference signals (DMRS) of a second channel of a second radio access technology (RAT); the second channel is a physical uplink shared channel or a physical downlink shared channel; the processing module is used to determine, according to the second information, time-frequency resources associated with the second information, and the time-frequency resources associated with the second information are not used for the transmission of a first channel of a first RAT; the first channel is a physical uplink shared channel or a physical downlink shared channel.

[0078] In another example, a transceiver module is configured to receive eighth indication information from a network device. The eighth indication information is used to indicate a first demodulation reference signal (DMRS) port set, and the first DMRS port set is for a first channel of a first radio access technology (RAT). The first channel is a physical uplink shared channel or a physical downlink shared channel. The transceiver module is further configured to receive ninth indication information from the network device. The ninth indication information is used to indicate a reference frequency position corresponding to the DMRS of the first channel of the first RAT, and the reference frequency position is the starting frequency position at which the DMRS of the first channel of the first RAT is generated. The transceiver module is further configured to, according to the eighth indication information and the ninth indication information, receive the DMRS of the first channel of the first RAT using one or more DMRS ports in the first DMRS port set, where the first channel is a physical downlink shared channel; or the transceiver module is further configured to transmit the DMRS of the first channel of the first RAT using one or more DMRS ports in the first DMRS port set, where the first channel is a physical uplink shared channel.

[0079] Optionally, the transceiver module and the processing module of the communication device in the seventh aspect may also perform the corresponding functions in the first aspect or any possible design of the first aspect, or perform the corresponding functions in the third aspect or any possible design of the third aspect, or perform the corresponding functions in the fifth aspect or any possible design of the fifth aspect. For specific details, refer to the detailed descriptions in the method examples. The beneficial effects that can be achieved can also be referred to the relevant content above, which will not be elaborated here.

[0080] In an eighth aspect, the present application provides a communication device. The communication device can be applied to the network device in the second aspect, the fourth aspect, or the sixth aspect above to implement the functions performed by the above network device. The communication device can be a network device, or a chip or a chip system or a system on chip of the network device, etc. The communication device can perform the functions performed by the above network device through hardware, or can also implement the corresponding functions through software executed by the hardware. The hardware or software includes one or more modules corresponding to the above functions. Such as a transceiver module and a processing module. The transceiver module can independently complete the following transceiver operations, or can also cooperate with the processing module to complete the following transceiver operations; correspondingly, the processing module can also independently complete the following processing operations, or can also cooperate with the transceiver module to complete the following processing operations, without limitation.

[0081] Exemplarily, a processing module is configured to determine first information; a transceiver module is configured to send the first information to a terminal device; wherein, the first information is used to indicate time-domain resources and frequency-domain resources not used for transmission of a first channel, and the frequency-domain resources indicated by the first information not used for transmission of the first channel include that the first information indicates one or more subcarriers in one or more resource blocks (RBs) not used for transmission of the first channel; the first channel is a physical uplink shared channel or a physical downlink shared channel.

[0082] In another example, a processing module is configured to determine second information; a transceiver module is configured to send the second information to a terminal device; wherein, the second information includes configuration information of one or more demodulation reference signals (DMRSs) of a second channel of a second radio access technology (RAT); the second channel is a physical uplink shared channel or a physical downlink shared channel; the time-frequency resources associated with the second information are not used for transmission of a first channel of a first RAT, and the first channel is a physical uplink shared channel or a physical downlink shared channel.

[0083] In yet another example, a transceiver module is configured to send eighth indication information to a terminal device; wherein, the eighth indication information is used to indicate a first DMRS port set; the first DMRS port set is for a first channel of a first RAT, and the first channel is a physical uplink shared channel or a physical downlink shared channel; the transceiver module is further configured to send ninth indication information to the terminal device; wherein, the ninth indication information is used to indicate a reference frequency position corresponding to the DMRS of the first channel of the first RAT, and the reference frequency position is the starting frequency position at which the DMRS of the first channel of the first RAT is generated; the transceiver module is further configured to receive the DMRS of the first channel of the first RAT using one or more DMRS ports in the first DMRS port set according to the eighth indication information and the ninth indication information, wherein the first channel is a physical uplink shared channel; or, the transceiver module is further configured to send the DMRS of the first channel of the first RAT using one or more DMRS ports in the first DMRS port set, wherein the first channel is a physical downlink shared channel.

[0084] Optionally, the transceiver module and the processing module of the communication device in the eighth aspect may also perform the corresponding functions in the second aspect or any possible design of the second aspect, or perform the corresponding functions in the fourth aspect or any possible design of the fourth aspect, or perform the corresponding functions in the sixth aspect or any possible design of the sixth aspect. For specific details, refer to the detailed description in the method examples, and the beneficial effects that can be achieved can also be referred to in the foregoing related content, which will not be elaborated here.

[0085] In a ninth aspect, the present application provides a communication device, which includes one or more processors; the one or more processors are configured to run computer programs or instructions, and when the one or more processors execute the computer instructions or instructions, the communication method described in any one of the first aspect to the sixth aspect is executed.

[0086] In a possible design, the communication device further includes one or more memories, the one or more memories are coupled to the one or more processors, and the one or more memories are configured to store the above-mentioned computer programs or instructions. In a possible implementation manner, the memory is located outside the communication device. In another possible implementation manner, the memory is located inside the communication device. In the present application, the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together. In a possible implementation manner, the communication device further includes a transceiver, and the transceiver is configured to receive information and / or send information.

[0087] In a possible design, the communication device further includes one or more communication interfaces, the one or more communication interfaces are coupled to the one or more processors, and the one or more communication interfaces are configured to communicate with other modules outside the communication device.

[0088] In a tenth aspect, the present application provides a communication device, which includes an interface circuit and a logic circuit; the interface circuit is configured to input and / or output information; the logic circuit is configured to execute the communication method described in any one of the first aspect to the sixth aspect, and process and / or generate information according to the information.

[0089] In an eleventh aspect, the present application provides a computer-readable storage medium, which stores computer instructions or programs, and when the computer instructions or programs run on a computer, the communication method described in any one of the first aspect to the sixth aspect is executed.

[0090] In a twelfth aspect, the present application provides a computer program product containing computer instructions, and when it runs on a computer, the communication method described in any one of the first aspect to the sixth aspect is executed.

[0091] In a thirteenth aspect, the present application provides a computer program, and when it runs on a computer, the communication method described in any one of the first aspect to the sixth aspect is executed.

[0092] In a fourteenth aspect, the present application provides a chip, including: a processor, the processor is coupled to a memory, and the memory is configured to store programs or instructions, and when the programs or instructions are executed by the processor, the communication method described in any one of the first aspect to the sixth aspect is executed.

[0093] Among them, for the technical effects brought by any one of the design manners from the ninth aspect to the fourteenth aspect, reference may be made to the technical effects brought by any one of the first aspect to the sixth aspect above, which will not be elaborated herein.

[0094] In a fifteenth aspect, the present application provides a communication system, which may include a communication device for performing the communication device described in the first aspect or any possible design of the first aspect, and a communication device for performing the communication device described in the second aspect or any possible design of the second aspect, or include a communication device for performing the communication device described in the third aspect or any possible design of the third aspect and a communication device for performing the communication device described in the fourth aspect or any possible design of the fourth aspect, or include a communication device for performing the communication device described in the fifth aspect or any possible design of the fifth aspect and a communication device for performing the communication device described in the sixth aspect or any possible design of the sixth aspect. Description of the Drawings

[0095] Figure 1 It is a schematic diagram of spectrum sharing provided by an embodiment of the present application;

[0096] Figure 2 It is a schematic diagram of dynamic spectrum sharing provided by an embodiment of the present application;

[0097] Figure 3 It is a schematic diagram of rate matching at the RE level granularity provided by an embodiment of the present application;

[0098] Figure 4 It is a schematic diagram of rate matching at the RB / symbol level granularity provided by an embodiment of the present application;

[0099] Figure 5 It is a schematic diagram of spatial division multiplexing provided by an embodiment of the present application;

[0100] Figure 6 It is a schematic diagram of a communication system provided by an embodiment of the present application;

[0101] Figure 7 It is a schematic diagram of a communication system provided by an embodiment of the present application;

[0102] Figure 8 It is a schematic diagram of a communication device provided by an embodiment of the present application;

[0103] Figure 9 It is a schematic diagram of a communication method provided by an embodiment of the present application;

[0104] Figure 10 It is a schematic diagram of the structure of DMRS provided by an embodiment of the present application;

[0105] Figure 11Schematic diagram of a subcarrier pattern provided by an embodiment of the present application;

[0106] Figure 12 Schematic diagram of time-frequency resources of DMRS of a first channel of a first RAT and a second channel of a second RAT provided by an embodiment of the present application;

[0107] Figure 13 Schematic diagram of a communication method provided by an embodiment of the present application;

[0108] Figure 14 Schematic diagram of a communication method provided by an embodiment of the present application;

[0109] Figure 15 Schematic diagram of a first DMRS port set and a second DMRS port set provided by an embodiment of the present application;

[0110] Figure 16 Schematic diagram of a reference frequency position corresponding to DMRS of a second channel of a 5G communication system provided by an embodiment of the present application;

[0111] Figure 17 Schematic diagram of reference frequency positions corresponding to DMRS of a second channel of a 5G communication system and DMRS of a first channel of a 6G communication system provided by an embodiment of the present application;

[0112] Figure 18 Schematic diagram of time-frequency resources of DMRS of a first channel of a first RAT and DMRS of a second channel of a second RAT provided by an embodiment of the present application;

[0113] Figure 19 Schematic diagram of time-frequency resources of DMRS of a first channel of a first RAT and DMRS of a second channel of a second RAT provided by an embodiment of the present application;

[0114] Figure 20 Schematic diagram of time-frequency resources of DMRS of a first channel of a 6G communication system and DMRS of a second channel of a 5G communication system provided by an embodiment of the present application;

[0115] Figure 21 Schematic diagram of time-frequency resources of DMRS of a first channel of a 6G communication system and DMRS of a second channel of a 5G communication system provided by an embodiment of the present application;

[0116] Figure 22 Schematic diagram of a communication device provided by an embodiment of the present application;

[0117] Figure 23 Schematic diagram of a communication device provided by an embodiment of the present application. Detailed implementation manners

[0118] Before describing the embodiments of the present application, the technical terms related to the embodiments of the present application are described.

[0119] Spectrum sharing: That is, different communication systems can be deployed on the same spectrum to improve the utilization rate of spectrum resources.

[0120] Exemplarily, as Figure 1 shown, wireless access technologies (RATs) such as future communication systems (such as the sixth-generation (6G) communication system), 5G new radio (NR) communication systems (or referred to as 5G communication systems, NR communication systems), 4G long term evolution (LTE) communication systems (or referred to as 4G communication systems, LTE communication systems), and even 3G communication systems can be deployed on the same spectrum.

[0121] Among them, taking the NR communication system and the LTE communication system as examples, the NR communication system and the LTE communication system can achieve spectrum sharing based on the dynamic spectrum sharing (DSS) method. As Figure 2 shown, the NR communication system and the LTE communication system can dynamically use the frequency resources in the shared spectrum for data transmission, rather than semi-statically allocating the frequency resources in the shared spectrum to the NR communication system and the LTE communication system. In addition, when dynamic spectrum sharing is performed between the NR communication system and the LTE communication system, more consideration is given to frequency division multiplexing or time division multiplexing between the signals of the NR communication system and the signals of the LTE communication system, that is, using different frequency resources or time resources to send the signals of the two RATs. For data channels or control channels, both can be achieved through the dynamic scheduling method of network devices.

[0122] However, in the LTE communication system, there are some downlink reference signals or downlink channels that are always-on transmitted and not dynamically scheduled by the network device. For example: cell reference signal (CRS), primary synchronization signal (PSS), secondary synchronization signal (SSS), physical broadcast channel (PBCH), etc. Based on this, the physical downlink share channel (PDSCH) of the NR communication system will conflict with these downlink reference signals / downlink channels of the LTE communication system and cause interference, affecting the transmission performance of these downlink reference signals / downlink channels of the LTE communication system. To solve this problem, the NR communication system introduces a rate match (RM) mechanism, that is, when the PDSCH of the NR communication system conflicts with downlink reference signals / downlink channels such as CRS, PSS, SSS, PBCH of the LTE communication system, the PDSCH of the NR communication system does not transmit on the time-frequency resources of downlink reference signals / downlink channels such as CRS, PSS, SSS, PBCH of the LTE communication system, and the PDSCH of the NR communication system performs rate matching on these time-frequency resources. According to the different designs of the downlink reference signals / downlink channels with which the conflict is solved, the downlink rate matching mechanisms supported by the NR communication system are also different.

[0123] Among them, for the CRS of the LTE communication system, since the CRS of the LTE communication system is not continuously mapped in the frequency domain, but the CRS is mapped to one resource element (RE) out of every three resource elements (REs), therefore, as Figure 3 shown, the PDSCH of the NR communication system supports rate matching at the RE-level (RE-level) granularity during resource mapping to avoid conflicts with the CRS of the LTE communication system. In addition, the network device of the NR communication system can configure the relevant parameters of the CRS of the LTE communication system to the terminal device of the NR communication system through signaling. The terminal device of the NR communication system can determine the time-frequency resource location of the CRS of the LTE communication system according to the relevant parameters of the CRS, that is, it can determine the time-frequency resource location that needs to perform rate matching during the resource mapping of the PDSCH of the NR communication system.

[0124] Among them, for the PSS, SSS, and PBCH of the LTE communication system, they can occupy one or more orthogonal frequency division multiplexing symbols (OFDM symbols) in the time domain and multiple resource blocks (RBs) in the frequency domain. Therefore, as Figure 4 shown, the PDSCH of the NR communication system can support rate matching at the RB / symbol-level granularity during resource mapping to avoid conflicts with these signals / channels of the LTE communication system. Additionally, different from the conflict resolution method of the CRS of the above LTE communication system, the network device of the NR communication system does not directly configure the relevant parameters of the downlink reference signals / downlink channels such as the PSS, SSS, and PBCH of the LTE communication system to the terminal device of the NR communication system through signaling, but notifies the terminal device of the time-frequency resource pattern of the PDSCH rate matching of the NR communication system.

[0125] Specifically, the network device can configure one or more rate matching patterns for the PDSCH. The configuration information of each rate matching pattern includes the following information: RB (resourceBlocks), the symbols corresponding to the RB (symbolsInResourceBlock), the period and pattern (periodicityAndPattern). Among them, resourceBlocks can be in the format of an RB-level bitmap. Each bit corresponds to an RB. When the value of the bit is '1', it indicates that the RB corresponding to the bit belongs to this rate matching pattern; otherwise, it does not belong to this rate matching pattern. symbolsInResourceBlock can be in the format of a symbol-level bitmap. Each bit corresponds to a slot or a symbol in two slots. When the value of the bit is '1', it indicates that the symbol corresponding to the bit belongs to this rate matching pattern; otherwise, it does not belong to this rate matching pattern. periodicityAndPattern can be in the format of a bitmap. For a pair of the RB level bitmap and the symbol level bitmap, periodicityAndPattern is used to configure a periodic time domain pattern. Each bit corresponds to a unit, and this unit is equal to the duration length of the above symbol level bitmap. When the value of the bit is '1', it indicates that the unit corresponding to the bit appears; otherwise, the unit does not appear.

[0126] Optionally, the network device can also be configured with two rate matching pattern groups. Each rate matching pattern group can include one or more rate matching patterns among multiple rate matching patterns, and the rate matching pattern in which rate matching pattern group takes effect is dynamically indicated by the rate matching indicator field in the downlink control information (DCI).

[0127] In the above description, by introducing the above rate matching mechanism, the NR communication system can solve the signal conflict between the LTE communication system and the NR communication system and improve the communication performance. However, the above method is not applicable to solving the signal conflict during spectrum sharing in other communication systems.

[0128] Exemplarily, for the NR communication system and the 6G communication system, when considering spectrum sharing, in addition to considering frequency division multiplexing or time division multiplexing, a more efficient multiplexing method, spatial division multiplexing, can also be considered between the signals of these two communication systems. Spatial division multiplexing means that multiple signals are transmitted using multiple spatially orthogonal channels on the same time-frequency resource. For example, as Figure 5 shown, signal transmission can be achieved based on spatial division multiplexing between the PDSCH of the NR communication system, the physical uplink share channel (PUSCH), or the PDSCH / PUSCH of the 6G communication system. If the signal conflict problem is solved by using the spatial division multiplexing method between the signals of the 6G communication system and the NR communication system, especially for the conflict between the PDSCH and the physical uplink share channel (PUSCH) of these two communication systems, it is necessary to ensure the orthogonality between the demodulation reference signal (DMRS) of the PDSCH / PUSCH of the 6G communication system and the DMRS of the PDSCH / PUSCH of the NR communication system. Otherwise, the DMRS of the PDSCH / PUSCH of the NR communication system or the 6G communication system will be interfered, resulting in a decline in the demodulation performance of the PDSCH / PUSCH of the NR communication system or the 6G communication system.

[0129] However, there is no solution yet regarding how to ensure the orthogonality of DMRS between two communication systems. Additionally, if the rate matching mechanism of the NR communication system is reused to solve the conflict between the PDSCH / PUSCH of the NR communication system and the PDSCH / PUSCH of the 6G communication system, the following problems also exist: ① The NR communication system defines downlink rate matching, that is, the rate matching mechanism for PDSCH, and does not support uplink rate matching, thus unable to solve the conflict problem between the PUSCH of one RAT and the PUSCH / PDSCH of another RAT; ② The rate matching pattern defined by the NR communication system is inconsistent with the pattern of the DMRS of PDSCH / PUSCH, and the rate matching mechanism of the NR communication system cannot be directly reused.

[0130] In summary, when different communication systems share spectrum, how to improve communication performance has become a technical problem to be solved urgently.

[0131] To solve the above technical problems, the present application proposes a communication method. In this method, the terminal device can receive first information from the network device and determine the time-domain resources and frequency-domain resources not used for the transmission of the first channel according to the first information. The first information is used to indicate the time-domain resources and frequency-domain resources not used for the transmission of the first channel; the frequency-domain resources indicated by the first information not used for the transmission of the first channel include that the first information indicates one or more subcarriers in one or more resource blocks (RB) not used for the transmission of the first channel; the first channel is a physical uplink shared channel or a physical downlink shared channel.

[0132] In the embodiments of the present application, the terminal device can determine the time-domain resources and frequency-domain resources not used for the transmission of the first channel according to the first information, thereby avoiding signal conflicts and being able to improve the performance of the communication system when different communication systems share spectrum.

[0133] The following will describe in detail the implementation manner of the embodiments of the present application with reference to the accompanying drawings of the specification.

[0134] The communication method provided by the embodiments of this application can be used in any communication system. This communication system can be a third generation partnership project (3GPP) communication system, such as an LTE system, or a 5G mobile communication system, a system with a hybrid network of LTE and 5G, an NR communication system, an NR vehicle to everything (V2X) system, a device-to-device (D2D) communication system, a machine to machine (M2M) communication system, the internet of things (IoT), a narrow band-internet of things (NB-IoT) system, a global system for mobile communications (GSM), an enhanced data rate for GSM evolution (EDGE) system, a wideband code division multiple access (WCDMA) system, a code division multiple access 2000 (CDMA2000) system, a time division-synchronization code division multiple access (TD-SCDMA) system, an enhanced mobile broadband (eMBB), an ultra-reliable and low-latency communication (URLLC), an enhanced machine-type communication (eMTC), and various types of next-generation communication systems, such as a 5.5G mobile communication system and a 6G communication system. It can also be a non-terrestrial network (NTN) system (such as a satellite communication system), a non-3GPP communication system, etc., without limitation.

[0135] Next, taking Figure 6 as an example, the communication system provided by the embodiments of this application will be described.

[0136] Figure 6 is a schematic diagram of a communication system provided by the embodiments of this application, as shown in Figure 6As shown, the communication system 100 may include at least one terminal device (such as terminal devices 101 to 106) and at least one network device (such as network device 110).

[0137] Among them, Figure 6 the terminal devices can be located within the beam / cell coverage of the network device, and the network device can provide communication services for the terminal devices. The terminal devices can be connected to the network device through the air interface in the manner shown in Figure 7 the figure. For example, the terminal devices can communicate with the network device through the air interface via the uplink or downlink. For example: the terminal devices can send uplink data to the network device through PUSCH in the uplink direction; the network device can send downlink data to the terminal devices through PDSCH in the downlink direction.

[0138] Figure 6 the terminal devices in can be devices with wireless transceiver functions or chips or chip systems that can be set in the devices, which can allow users to access the network and are devices used to provide voice and / or data connectivity for users. The terminal devices can also be referred to as user equipment (UE), subscriber unit, terminal, mobile station (MS), or mobile terminal (MT), etc.

[0139] Exemplarily, Figure 6The terminal device in it can be a mobile phone, a tablet computer, or a computer with wireless transceiver functions. The terminal device can also be a user station, a mobile station, a remote station, a remote terminal device, a mobile terminal device, a user terminal device, a wireless communication device, a user agent, a user device, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a tablet computer (PAD), a handheld device with wireless communication functions, a computing device, a processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in the Internet of Things, a household appliance, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in the smart grid, a wireless terminal in a smart city, a wireless terminal in a smart home, a vehicle with vehicle-to-vehicle (V2V) communication capabilities, a connected vehicle, a drone with unmanned aerial vehicle to unmanned aerial vehicle (UAV to UAV, U2U) communication capabilities, a Wi-Fi terminal device (such as a vehicle-mounted terminal, a smart phone, a PAD, etc. with the function of connecting to a Wi-Fi access point (AP)), a terminal device in a future network, or a terminal device in a future evolved public land mobile network (PLMN), without limitation.

[0140] Among them, Figure 6 the network device can be any device deployed in the access network that can communicate wirelessly with the terminal device, and can also be a chip or a chip system that can be set in the above device, and can also be a logical node or a logical module or a function implemented in software, and can be used to implement functions such as wireless physical control functions, resource scheduling and wireless resource management, wireless access control, and mobility management. Specifically, the network device can be a device that supports wired access or a device that supports wireless access.

[0141] Exemplarily, the network device may consist of one or more access networks (AN) / radio access networks (RAN) nodes. The AN / RAN nodes may be: base stations, gNode Bs (gNBs), transmission reception points (TRPs), evolved Node Bs (eNBs), radio network controllers (RNCs), Node Bs (NBs), base station controllers (BSCs), base transceiver stations (BTSs), home base stations (e.g., home evolved Node Bs, or home Node Bs, HNBs), base band units (BBUs), or Wi-Fi APs, etc. Among them, the base station may be a 4G, 5G, 5.5G or future 6G base station, etc., without limitation; the Wi-Fi AP may be a Wi-Fi 5, Wi-Fi 6 or future Wi-Fi AP product, etc., without limitation.

[0142] In another example, the network device may include a baseband unit (BBU) and a remote radio unit (RRU). The BBU and the RRU may be placed in different locations. For example, the RRU is remote and placed in a high-traffic area, and the BBU is placed in the central computer room. The BBU and the RRU may also be placed in the same computer room. The BBU and the RRU may also be different components under the same rack.

[0143] In yet another example, the network device may also be a device including a centralized unit (CU) node, or including a distributed unit (DU) node, or including a CU node and a DU node. For example, the network device can be logically divided into a CU and a DU from the perspective of logical functions. The functions of some protocol layers are centrally controlled by the CU, and the functions of the remaining part or all protocol layers are distributed in the DU, and the DU is centrally controlled by the CU. The CU and the DU can be set separately, or can also be included in the same network element, such as in the BBU. Further, the centralized unit CU can also be divided into a control plane (CU-CP) and a user plane (CU-UP).

[0144] In another example, the network device may also be a device including a radio unit (RU), or a device including a CU, a DU, and an RU. The RU may be included in a radio frequency device or a radio frequency unit, for example, included in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0145] It can be understood that in different systems, the CU (or CU-CP and CU-UP), DU, or RU may also have different names, but those skilled in the art can understand their meanings. For example, in an open radio access network (O-RAN) system, the CU may also be referred to as an O-CU (open CU), the DU may also be referred to as an O-DU, the CU-CP may also be referred to as an O-CU-CP, the CU-UP may also be referred to as an O-CU-UP, and the RU may also be referred to as an O-RU. For the convenience of description, in this application, the CU, CU-CP, CU-UP, DU, and RU are used as examples for description. Any one of the CU (or CU-CP, CU-UP), DU, and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0146] It can be understood that the terminal device and the network device in the embodiments of this application may both be one or more chips, or may be a system on chip (SOC), etc. Figure 6 These are only exemplary drawings, and the number of devices included is not limited. In addition, except Figure 6 the devices shown, the communication system may further include other devices, such as a wireless relay device and a wireless backhaul device, etc. Figure 6 The names of the devices and the naming of the links in Figure 6 are not limited. Except for the names shown, the devices and the links may also be named other names without limitation.

[0147] When specifically implemented, Figure 6 or Figure 7 as shown: each terminal device and network device may adopt the composition structure shown Figure 8 or include the components shown Figure 8 Figure 8 FIG. 27 is a schematic diagram of the composition of a communication device 800 provided in an embodiment of this application. The communication device 800 may be a terminal device, a chip, or a system on chip in the terminal device; it may also be a network device, a chip, or a system on chip in the network device. As Figure 8 shown, the communication device 800 includes a processor 801, a transceiver 802, and a communication line 803.​

[0148] Further, the communication device 800 may further include a memory 804. Among them, the processor 801, the memory 804, and the transceiver 802 may be connected through a communication line 803.

[0149] Among them, the processor 801 is a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 801 may also be other devices with processing functions, such as circuits, devices, or software modules, without limitation.

[0150] The transceiver 802 is used to communicate with other devices or other communication networks. The other communication network may be an Ethernet, a radio access network (RAN), a wireless local area network (WLAN), etc. The transceiver 802 may be a module, a circuit, a transceiver, or any device capable of implementing communication.

[0151] The communication line 803 is used to transmit information between the components included in the communication device 800.

[0152] The memory 804 is used to store instructions. Among them, the instructions may be computer programs.

[0153] Among them, the memory 804 may be a read-only memory (ROM) or other types of static storage devices that can store static information and / or instructions, may also be a random access memory (RAM) or other types of dynamic storage devices that can store information and / or instructions, or may also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media, or other magnetic storage devices, without limitation.

[0154] It should be noted that the memory 804 can exist independently of the processor 801 or be integrated with the processor 801. The memory 804 can be used to store instructions, program codes, or some data, etc. The memory 804 can be located inside the communication device 800 or outside the communication device 800, without limitation. The processor 801 is configured to execute the instructions stored in the memory 804 to implement the method provided in the following embodiments of the present application.

[0155] In one example, the processor 801 may include one or more CPUs, such as Figure 8 CPU0 and CPU1 in

[0156] As an alternative implementation, the communication device 800 includes multiple processors. For example, in addition to Figure 8 the processor 801 in

[0157] As an alternative implementation, the communication device 800 further includes an output device 805 and an input device 806. Exemplarily, the input device 806 is a device such as a keyboard, a mouse, a microphone, or a joystick, and the output device 805 is a device such as a display screen or a speaker.

[0158] It should be noted that the communication device 800 can be a desktop computer, a laptop computer, a network server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system, or a device with a similar structure in Figure 8 In addition, Figure 8 the shown composition structure in Figure 8 does not constitute a limitation on the communication device. In addition to the components shown in

[0159] In the embodiments of the present application, the chip system can be composed of chips or can include chips and other discrete devices.

[0160] In addition, actions, terms, etc. involved between the embodiments of the present application can be mutually referred to without limitation. The message names or parameter names in the messages exchanged between the devices in the embodiments of the present application are only examples, and other names can also be used in specific implementations without limitation.

[0161] Next, in combination with Figure 6 or Figure 7 the shown communication system, with reference to the following Figure 9 , the communication method provided in the embodiments of the present application will be described. Among them, the network device can be Figure 6 or Figure 7 any network device in the shown communication system, and the terminal device can also beFigure 6 Or Figure 7 Any terminal device in the communication system shown below. The network device or terminal device described in the following embodiments may include Figure 8 The components shown.

[0162] Figure 9 The flowchart of a communication method provided by an embodiment of this application is shown in Figure 9 As shown, this method is applied to the first RAT, and this method may include:

[0163] Step 901, the network device determines the first information.

[0164] Step 902, the network device sends the first information to the terminal device; correspondingly, the terminal device receives the first information from the network device.

[0165] Step 903, the terminal device determines the time-domain resources and frequency-domain resources that are not used for the transmission of the first channel according to the first information.

[0166] Among them, the first information can be used to indicate the time-domain resources and frequency-domain resources that are not used for the transmission of the first channel. The frequency-domain resources indicated by the first information that are not used for the transmission of the first channel include that the first information indicates one or more subcarriers in one or more RBs that are not used for the transmission of the first channel. The first channel is a physical uplink shared channel or a physical downlink shared channel.

[0167] It can be understood that the above network device is a network device of the first RAT, the terminal device is a terminal device of the first RAT, and the first channel is the first channel of the first RAT.

[0168] Among them, the first RAT can be any communication system in the foregoing communication system. For example, it can be a future communication system (such as a 6G communication system), or it can also be a 5G communication system, etc., without limitation.

[0169] Exemplarily, the network device can, based on the rate matching mechanism, configure the time-domain resources and frequency-domain resources that are not used for the transmission of the first channel to the terminal device in the form of rate matching patterns, that is, the first information can include the configuration information of one or more rate matching patterns. After receiving the first information, the terminal device can determine the time-domain resources and frequency-domain resources that are not used for the transmission of the first channel.

[0170] Among them, the time-frequency resources associated with each rate matching pattern are the time-domain resources and frequency-domain resources that are not used for the transmission of the first channel, or it can be described that the time-frequency resources associated with each rate matching pattern are unavailable for the first channel.

[0171] The following takes the frequency-domain resources as an example, and refers to the following two possible designs to elaborate on the configuration information of each rate matching pattern in detail:

[0172] In the first possible design, the configuration information of each rate matching pattern includes first indication information and second indication information.

[0173] Among them, the first indication information can be used to indicate one or more RBs associated with the rate matching pattern, and the second indication information can be used to indicate one or more subcarriers in one or more RBs associated with the rate matching pattern.

[0174] For the first indication information, in one possible implementation, the first indication information of each rate matching pattern can be a bitmap, and each bit in the bitmap is used to indicate whether the RB corresponding to each bit belongs to the rate matching pattern.

[0175] Among them, the bitmap can include Y bits, and the Y bits can correspond one by one to Y RBs. Y is a positive integer. Y can be predefined by the protocol or customized by the network device, without limitation. The value of the bit can be set to 0, indicating that the RB corresponding to the bit does not belong to the rate matching pattern, and the value of the bit can be set to 1, indicating that the RB corresponding to the bit belongs to the rate matching pattern. Or, the value of the bit can be set to 1, indicating that the RB corresponding to the bit does not belong to the rate matching pattern, and the value of the bit can be set to 0, indicating that the RB corresponding to the bit belongs to the rate matching pattern, without limitation.

[0176] For example, taking the bitmap corresponding to the first indication information as 10011011 as an example, it indicates that the first indication information is used to indicate that the 1st, 4th, 5th, 7th, and 8th RBs among the 8 RBs associated with the bitmap belong to the rate matching pattern corresponding to the first indication information, and the 2nd, 3rd, and 6th RBs do not belong to the rate matching pattern corresponding to the first indication information.

[0177] It can be understood that the above bitmap is a manifestation form of the first indication information, and the first indication information can also be any manifestation form that can be used to indicate one or more RBs associated with the rate matching pattern, without limitation.

[0178] For the second indication information, in the first possible implementation, the second indication information of each rate matching pattern can be used to indicate the subcarrier pattern jointly associated with all RBs associated with the rate matching pattern.

[0179] Among them, the subcarrier pattern includes one or more subcarriers in an RB, and the pattern formed by the one or more subcarriers is called the subcarrier pattern. In this example, the subcarrier patterns associated with each RB among all RBs associated with the same rate matching pattern are the same. The second indication information can indicate one or more subcarriers associated with the rate matching pattern by indicating a subcarrier pattern, which can reduce signaling overhead.

[0180] Optionally, the subcarrier pattern may be predefined.

[0181] Exemplarily, the second indication information may include A bits, and the specific value of A may be determined according to the number B of predefined subcarrier patterns. For example, represents rounding up. As another example, the second indication information may be a bit map, then A = B.

[0182] For example, taking the subcarrier pattern including the first subcarrier pattern, the second subcarrier pattern, the third subcarrier pattern, and the fourth subcarrier as an example, the second indication information may include bits, as shown in the second indication information (1) in Table 1 below. By setting the second indication information to 00, it may indicate that the subcarrier pattern commonly associated with all RBs associated with the rate matching pattern is the first subcarrier pattern; by setting the second indication information to 01, it may indicate that the subcarrier pattern commonly associated with all RBs associated with the rate matching pattern is the second subcarrier pattern; by setting the second indication information to 10, it may indicate that the subcarrier pattern commonly associated with all RBs associated with the rate matching pattern is the third subcarrier pattern; by setting the second indication information to 11, it may indicate that the subcarrier pattern commonly associated with all RBs associated with the rate matching pattern is the fourth subcarrier pattern:

[0183] Table 1

[0184] Second indication information (1) Second indication information (2) Subcarrier pattern 00 1000 First subcarrier pattern 01 0100 Second subcarrier pattern 10 0010 Third subcarrier pattern 11 0001 Fourth subcarrier pattern

[0185] As another example, taking the subcarrier pattern including the first subcarrier pattern, the second subcarrier pattern, the third subcarrier pattern, and the fourth subcarrier, and the second indication information being a bit map as an example, the second indication information may include 4 bits, as shown in the second indication information (2) in Table 1 above. By setting the second indication information to 1000, it may indicate that the subcarrier pattern commonly associated with all RBs associated with the rate matching pattern is the first subcarrier pattern; by setting the second indication information to 0100, it may indicate that the subcarrier pattern commonly associated with all RBs associated with the rate matching pattern is the second subcarrier pattern; by setting the second indication information to 0010, it may indicate that the subcarrier pattern commonly associated with all RBs associated with the rate matching pattern is the third subcarrier pattern; by setting the second indication information to 0001, it may indicate that the subcarrier pattern commonly associated with all RBs associated with the rate matching pattern is the fourth subcarrier pattern.

[0186] For the second indication information, in a second possible implementation, the second indication information of each rate matching pattern may be used to indicate the subcarrier patterns respectively associated with all RBs associated with the rate matching pattern.

[0187] Among them, the subcarrier pattern includes one or more subcarriers in an RB. In this example, the subcarrier patterns associated with each RB are indicated separately. Any two RBs among all the RBs associated with the same rate matching pattern may have the same or different subcarrier patterns. By indicating the subcarrier pattern associated with each RB, the second indication information can improve the indication flexibility of the subcarriers associated with the rate matching pattern and enhance the communication performance.

[0188] Optionally, the subcarrier pattern can be predefined.

[0189] Exemplarily, the second indication information can include Y * A bits, or the second indication information can include X * A bits.

[0190] Among them, Y is the number of RBs corresponding to the first indication information, X is the number of RBs belonging to the rate matching pattern among the RBs corresponding to the first indication information, X is less than or equal to Y, each RB corresponds to A bits, and the A bits corresponding to each RB are used to indicate the subcarrier pattern associated with the RB corresponding to the A bits. The description of A can refer to the previous description of A and will not be elaborated here. Compared with Y * A bits, setting the second indication information to X * A bits can reduce the signaling overhead.

[0191] For example, taking the subcarrier pattern including the first subcarrier pattern, the second subcarrier pattern, the third subcarrier pattern, the fourth subcarrier, Y being 4, and A being 2 as an example, the second indication information can include 8 bits. Assuming the second indication information is 10010011, then this second indication information can be used to indicate that the subcarrier pattern associated with the first RB is the third subcarrier, the subcarrier pattern associated with the second RB is the second subcarrier, the subcarrier pattern associated with the third RB is the first subcarrier, and the subcarrier pattern associated with the fourth RB is the fourth subcarrier.

[0192] Another example, taking the subcarrier pattern including the first subcarrier pattern, the second subcarrier pattern, the third subcarrier pattern, the fourth subcarrier, Y being 4, X being 3, and A being 2 as an example, the second indication information can include 6 bits. Assuming the second indication information is 100100, then this second indication information can be used to indicate that the subcarrier pattern associated with the first RB belonging to the rate matching pattern among the 4 RBs corresponding to the first indication information is the third subcarrier, the subcarrier pattern associated with the second RB belonging to the rate matching pattern among the 4 RBs corresponding to the first indication information is the second subcarrier, and the subcarrier pattern associated with the third RB belonging to the rate matching pattern among the 4 RBs corresponding to the first indication information is the first subcarrier.

[0193] In the second possible design, the configuration information of each rate matching pattern includes third indication information.

[0194] Among them, the third indication information is used to indicate one or more RBs associated with the rate matching pattern and one or more subcarriers associated in the one or more RBs.

[0195] Exemplarily, the third indication information may include N*M bits, where N is the number of RBs corresponding to the third indication information, each RB corresponds to M bits, and the M bits corresponding to each RB are used to indicate whether the RB corresponding to the M bits belongs to the rate matching pattern and the subcarrier pattern associated with the RB.

[0196] Optionally, N may be predefined by the protocol.

[0197] Exemplarily, for the M bits corresponding to each RB, the first value of the M bits is used to indicate that the RB corresponding to the M bits does not belong to the rate matching pattern. Alternatively, the second value of the M bits is used to indicate that the RB corresponding to the M bits belongs to the rate matching pattern and the RB is associated with the first subcarrier pattern. Alternatively, the third value of the M bits is used to indicate that the RB corresponding to the M bits belongs to the rate matching pattern and the RB is associated with the second subcarrier pattern. Alternatively, the fourth value of the M bits is used to indicate that the RB corresponding to the M bits belongs to the rate matching pattern and the RB is associated with the third subcarrier pattern. Alternatively, the fifth value of the M bits is used to indicate that the RB corresponding to the M bits belongs to the rate matching pattern and the RB is associated with the fourth subcarrier pattern.

[0198] For example, taking N as 4 and M as 3 as an example, the third indication information may include 12 bits. Every 3 bits correspond to one of the 4 RBs. The values and meanings of every 3 bits can be as shown in Table 2 below. Assuming the third indication information is 000 011100 001, it indicates that the third indication information is used to indicate: the first RB does not belong to the rate matching pattern; the second RB belongs to the rate matching pattern and the RB is associated with the third subcarrier pattern; the third RB belongs to the rate matching pattern and the RB is associated with the fourth subcarrier pattern; the fourth RB belongs to the rate matching pattern and the RB is associated with the first subcarrier pattern.

[0199] Table 2

[0200]

[0201] Based on the description of the subcarrier pattern in the above two possible designs, exemplarily, the subcarrier pattern may include the following several subcarrier patterns:

[0202] The first subcarrier pattern, and the first subcarrier pattern includes all subcarriers in one RB;

[0203] The second subcarrier pattern, and the second subcarrier pattern includes the 1st, 3rd, 5th, 7th, 9th, and 11th subcarriers in one RB;

[0204] The third sub - carrier pattern, where the third sub - carrier pattern includes the 1st, 2nd, 7th, and 8th sub - carriers in one RB;

[0205] The fourth sub - carrier pattern, where the fourth sub - carrier pattern includes the 1st, 2nd, 3rd, 4th, 7th, 8th, 9th, and 10th sub - carriers in one RB.

[0206] Wherein, the i - th sub - carrier is the i - th sub - carrier arranged in ascending or descending order of frequency in one RB, and i = 1, 2, 3, …, 11, 12.

[0207] For the above - mentioned first sub - carrier pattern, it can also be described as that one or more sub - carriers indicated by the first information include all sub - carriers in one RB, or the pattern formed by all sub - carriers in one RB is the first sub - carrier pattern. For the above - mentioned second sub - carrier pattern, it can also be described as that one or more sub - carriers indicated by the first information include the 1st, 3rd, 5th, 7th, 9th, and 11th sub - carriers in one RB, or the pattern formed by the 1st, 3rd, 5th, 7th, 9th, and 11th sub - carriers in one RB is the second sub - carrier pattern. For the above - mentioned third sub - carrier pattern, it can also be described as that one or more sub - carriers indicated by the first information include the 1st, 2nd, 7th, and 8th sub - carriers in one RB, or the pattern formed by the 1st, 2nd, 7th, and 8th sub - carriers in one RB is the third sub - carrier pattern. For the above - mentioned fourth sub - carrier pattern, it can also be described as that one or more sub - carriers indicated by the first information include the 1st, 2nd, 3rd, 4th, 7th, 8th, 9th, and 10th sub - carriers in one RB, or the pattern formed by the 1st, 2nd, 3rd, 4th, 7th, 8th, 9th, and 10th sub - carriers in one RB is the second sub - carrier pattern.

[0208] Optionally, the sub - carrier pattern corresponding to the above - mentioned frequency - domain resource can be determined in the following way: For the frequency - domain resource of the rate - matching pattern of the first RAT, it can be defined in combination with the frequency - domain resource design of the DMRS of the second channel of the second RAT. Thus, when the first RAT and the second RAT share the spectrum, the first channel of the first RAT does not transmit on the frequency - domain resource of the DMRS of the second channel of the second RAT (or it can be described as the first channel of the first RAT performs rate - matching on the frequency - domain resource of the DMRS of the second channel of the second RAT, or it can be described as the first channel of the first RAT is silent on the frequency - domain resource of the DMRS of the second channel of the second RAT), keeping the DMRS orthogonal and improving the communication performance.

[0209] Wherein, the second RAT can be any communication system other than the first RAT in the aforementioned communication system. For example, the first RAT is a 6G communication system and the second RAT is a 5G communication system; or the first RAT is a 5G communication system and the second RAT is a 6G communication system, etc., without limitation.

[0210] Among them, the second channel is a Physical Uplink Shared Channel (PUSCH) or a Physical Downlink Shared Channel (PDSCH). It can be understood that in the embodiments of the present application, there is no limitation on whether the link directions of the first channel and the second channel are the same or different. That is, the first channel can be a PUSCH, and the second channel can be a PUSCH. Or, the first channel can be a PUSCH, and the second channel can be a PDSCH. Or, the first channel can be a PDSCH, and the second channel can be a PUSCH. Or, the first channel can be a PDSCH, and the second channel can be a PDSCH, without limitation.

[0211] Exemplarily, taking the first RAT as a 6G communication system and the second RAT as a 5G communication system as an example, the DMRS of the second channel of the 5G communication system supports multiple ports, and the multiple ports are orthogonal to each other. According to different supported DMRS ports structures, as Figure 10 shown, there are two types of DMRS: type 1 DMRS and type 2 DMRS. Each type of DMRS can be further divided into 1-symbol DMRS and 2-symbol DMRS. Therefore, there are a total of four DMRS structures.

[0212] Among them, the 5G communication system can use one or more of the DMRS ports at the same time. According to the used DMRS ports, within one RB, there are four possibilities for the subcarriers occupied by the DMRS as Figure 11 shown, that is, the subcarriers occupied by the DMRS can be the subcarriers included in the first subcarrier pattern, or the second subcarrier pattern, or the third subcarrier pattern, or the fourth subcarrier pattern.

[0213] Among them, as Figure 10 and Figure 11 shown, the first subcarrier pattern can correspond to type1 / type2 DMRS and is used by all code division multiple (CDM) groups. The second subcarrier pattern can correspond to type1 DMRS and is used by CDM group 0. The third subcarrier pattern can correspond to type2 DMRS and is used by CDM group 0. The fourth subcarrier pattern can correspond to type2 DMRS and is used by CDM group 0 and CDM group 1.

[0214] The following takes the time-domain resources as an example to elaborate on the configuration information of each rate matching pattern in detail:

[0215] Among them, the configuration information of each rate matching pattern may include tenth indication information, and the tenth indication information is used to indicate the symbols associated with the rate matching pattern in one or more time slots / sub-frames.

[0216] Optionally, the tenth indication information may be a bitmap, and each bit in the bitmap is used to indicate whether the symbol associated with each bit belongs to the rate matching pattern. The value of the bit may be set to 0, indicating that the symbol corresponding to the bit does not belong to the rate matching pattern, and the value of the bit is set to 1, indicating that the symbol corresponding to the bit belongs to the rate matching pattern. Alternatively, the value of the bit may be set to 1, indicating that the symbol corresponding to the bit does not belong to the rate matching pattern, and the value of the bit is set to 0, indicating that the symbol corresponding to the bit belongs to the rate matching pattern, without limitation.

[0217] Exemplarily, taking the tenth indication information used to indicate the symbols associated with the rate matching pattern in Z time slots / sub-frames (Z is a positive integer) as an example, the tenth indication information may include Z*K bits, corresponding one by one to the Z*K symbols included in Z time slots / sub-frames, and K is the number of symbols included in each time slot / sub-frame.

[0218] Optionally, the configuration information of each rate matching pattern may further include fourth indication information, and the fourth indication information is used to indicate the time domain period of the rate matching pattern and the time domain resource pattern within the period.

[0219] Among them, the fourth indication information may be in the form of a bitmap. For a pair of frequency domain resources (such as the frequency domain resources indicated by the first indication information and the second indication information, or the frequency domain resources indicated by the third indication information) and time domain resources (such as the time domain resources indicated by the tenth indication information), the fourth indication information is used to configure a periodic time domain pattern, and each bit corresponds to a time unit, and the time unit is equal to the duration of the foregoing time domain resources (that is, one or more time slots / sub-frames indicated by the foregoing tenth indication information). When the value of the bit is '1', it indicates that the time unit corresponding to the bit appears, otherwise, the time unit does not appear. Specifically, reference may be made to the foregoing description of the parameter "periodicityAndPattern", which will not be elaborated herein.

[0220] Optionally, the candidate values of the time domain period may include one or more of the following: 1, 2, 4, 5, 8, 10, 20, 40, 80, 160, or 320 time units. Each time unit may include one or more time slots or sub-frames corresponding to the rate matching pattern, that is, each time unit may include one or more time slots / sub-frames corresponding to the foregoing tenth indication information. For example, each time unit may include Z time slots / sub-frames corresponding to the foregoing tenth indication information.

[0221] Optionally, the above time-domain resources can be determined in the following manner: For the time-domain resources of the rate matching pattern of the first RAT, they can be defined in combination with the design of the time-domain resources of the DMRS of the second channel of the second RAT. Thus, when the first RAT and the second RAT perform spectrum sharing, as Figure 12 described, the first channel of the first RAT does not transmit on the time-domain resources of the DMRS of the second channel of the second RAT (or described as the first channel of the first RAT performs rate matching on the time-domain resources of the DMRS of the second channel of the second RAT, or described as the first channel of the first RAT is silent on the time-domain resources of the DMRS of the second channel of the second RAT), and the second channel of the second RAT does not transmit on the time-domain resources of the DMRS of the first channel of the first RAT (or described as the second channel of the second RAT performs rate matching on the time-domain resources of the DMRS of the first channel of the first RAT, or described as the second channel of the second RAT is silent on the time-domain resources of the DMRS of the first channel of the first RAT), maintaining the orthogonality of the DMRS and improving the communication performance.

[0222] Exemplarily, taking the first RAT as a 6G communication system and the second RAT as a 5G communication system as an example, the DMRS of the second channel of the 5G communication system may appear on any symbol in a time slot / subframe. Therefore, the time-domain resources of the rate matching pattern can be indicated by the above-mentioned tenth indication information and fourth indication information.

[0223] Optionally, the configuration information of each rate matching pattern may further include eleventh indication information; the eleventh indication information is used to indicate the subcarrier spacing associated with the rate matching pattern.

[0224] Optionally, each rate matching pattern can be a rate matching pattern exclusive to a bandwidth part (BWP); or, each rate matching pattern is a cell-common rate matching pattern.

[0225] Among them, if a certain rate matching pattern is configured for a certain BWP, then the rate matching pattern takes effect for the associated BWP, or described as taking effect for the first channel on the associated BWP. If a certain rate matching pattern is configured for a certain serving cell, then the rate matching pattern can take effect for all BWPs of the serving cell, or described as taking effect for the first channel on all BWPs of the serving cell.

[0226] Based on the above description of the first information, optionally, the network device may carry the first information in one or more of the following signaling and send it to the terminal device: radio resource control (RRC) signaling, system information block (SIB) signaling, etc., without limitation.

[0227] Optionally, the network device may also send the fifth indication information to the terminal device, and the fifth indication information is used to indicate the rate matching pattern that is effective in one or more rate matching patterns.

[0228] Optionally, when the network device sends the configuration information of the rate matching pattern to the terminal device, it may configure one or more rate matching patterns for the terminal device in units of the rate matching pattern, or may also configure one or more rate matching pattern groups for the terminal device in units of the rate matching pattern group, and each rate matching pattern group may include one or more rate matching patterns.

[0229] Optionally, the network device may also send the twelfth indication information to the terminal device, and the twelfth indication information is used to indicate the rate matching pattern group that is effective in one or more rate matching pattern groups.

[0230] Optionally, when the network device sends the fifth indication information or the twelfth indication information to the terminal device, it may carry the fifth indication information or the twelfth indication information in one or more of the following signaling and send it to the terminal device: SIB, RRC signaling, DCI, media access control control element (MAC CE) and other signaling, without limitation.

[0231] Based on the above Figure 9 In the method shown above, when the first RAT and the second RAT perform spectrum sharing, the first channel of the first RAT and the second channel of the second RAT may be transmitted in a time-division multiplexing manner, that is, the first channel of the first RAT is silent on the time-frequency resources of the DMRS of the second channel of the second RAT, or rather, the first channel of the first RAT does not send data on the time-frequency resources of the DMRS of the second channel of the second RAT, and keeps the DMRS orthogonal to improve the communication performance.

[0232] Different from the above Figure 9 where the network device indicates the time-frequency resources not used for the transmission of the first channel of the first RAT through the first information, referring to the method shown below Figure 13 the network device may also indicate the time-frequency resources not used for the transmission of the first channel of the first RAT through the second information.

[0233] Figure 13Schematic diagram of a communication method provided by an embodiment of this application. As Figure 13 shown, this method can be applied to a first RAT. This method may include:

[0234] Step 1301: The network device determines second information.

[0235] Step 1302: The network device sends the second information to the terminal device; correspondingly, the terminal device receives the second information from the network device.

[0236] Step 1303: The terminal device determines the time-frequency resources associated with the second information according to the second information. The time-frequency resources associated with the second information are not used for the transmission of the first channel of the first RAT.

[0237] Among them, the second information may include configuration information of one or more DMRSs of the second channel of the second RAT. The first channel is a physical uplink shared channel or a physical downlink shared channel, and the second channel is a physical uplink shared channel or a physical downlink shared channel. The descriptions of the first channel and the second channel can refer to the relevant descriptions above Figure 9 and will not be elaborated here.

[0238] Exemplarily, the configuration information of each DMRS may include at least one of the following: DMRS type, number of DMRS symbols, DMRS time domain position, DMRS time domain length, DMRS frequency domain resources, DMRS code division multiplexing (CDM) group without data, configuration information of a phase tracking reference signal (PTRS), etc., without limitation.

[0239] Among them, the DMRS frequency domain resources can be used to indicate the RBs associated with the DMRS.

[0240] Optionally, the network device may carry the second information in one or more of the following signaling to send to the terminal device: RRC signaling, SIB signaling, etc., without limitation.

[0241] Optionally, the network device may also send sixth indication information to the terminal device. The sixth indication information is used to indicate the configuration information of the DMRS that takes effect in the configuration information of one or more DMRSs.

[0242] Optionally, the network device may carry the sixth indication information in one or more of the following signaling to send to the terminal device: SIB, RRC signaling, DCI, MAC CE and other signaling, without limitation.

[0243] Based on the above description of DMRS, optionally, DMRS can be extended. For example, two types of DMRS can be defined in the first RAT. The first type of DMRS is used for the transmission and demodulation of the first channel. The second type of DMRS has a different function from the first type. The time-frequency resources of the second type of DMRS are neither used for the transmission of the first channel nor for the demodulation of the first channel, but only for defining the time-frequency resources not used for the transmission of the first channel in the first RAT.

[0244] Optionally, among the configuration information of one or more DMRSs, there is at least one piece of DMRS configuration information including seventh indication information; this seventh indication information is used to indicate that the time-frequency resources associated with the DMRS are not used for the transmission of the first channel in the first RAT. The DMRS corresponding to this seventh indication information is the second type of DMRS mentioned above.

[0245] Exemplarily, taking the rate matching of the first channel in a 6G communication system on the time-frequency resources of the DMRS of the second channel in a 5G communication system as an example, the 6G communication system can define two types of DMRS. The function of the first type of DMRS is similar to that of the DMRS of the second channel in the 5G communication system and can be used for the transmission and demodulation of the first channel. The function of the second type of DMRS is different from that of the DMRS of the second channel in the 5G communication system. The terminal device can assume that the time-frequency resources of the second type of DMRS are neither used for PXSCH transmission nor for PXSCH demodulation. For the second type of DMRS, if the first channel is PDSCH, the terminal device can make no assumptions about the signals transmitted on the time-frequency resources of this type of DMRS. If the first channel is PUSCH, the terminal device can not send this type of DMRS. Optionally, the structure of the second type of DMRS is the same as or similar to that of the DMRS of the second channel in the 5G communication system.

[0246] Extendably, the first type of DMRS can be called non-zero-power (NZP) DMRS, and the second type of DMRS can be called zero-power (ZP) DMRS.

[0247] Optionally, for the second type of DMRS, the network device can configure one or more pieces of configuration information of the second type of DMRS for the terminal device. Further, the network device can also indicate the effective configuration information of the second type of DMRS among one or more pieces of configuration information of the second type of DMRS through the sixth indication information.

[0248] Based on the above Figure 13In the method shown, the network device can directly configure the configuration information of the DMRS that needs to perform rate matching to the terminal device through the second information. The terminal device determines the time-frequency resources of the DMRS according to the configuration information of the DMRS, and then can determine the time-frequency resources not used for the transmission of the first channel of the first RAT. That is, when the first RAT and the second RAT perform spectrum sharing, the first channel of the first RAT and the second channel of the second RAT can be transmitted in a time-division multiplexing manner. The first channel of the first RAT is silent on the time-frequency resources of the DMRS of the second channel of the second RAT, or in other words, the first channel of the first RAT does not send data on the time-frequency resources of the DMRS of the second channel of the second RAT, avoiding the interference of the data transmission of the first channel of the first RAT on the DMRS transmission of the second channel of the second RAT, keeping the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT orthogonal to each other, and improving the communication performance.

[0249] Different from the above Figures 9 to 13 where the first channel of the first RAT and the second channel of the second RAT are transmitted in a time-division multiplexing manner to improve the performance of the communication system, referring to the following Figure 14 the network device can also improve the performance of the communication system by indicating the reference frequency position to the terminal device to ensure that the basic sequences used by the first RAT and the second RAT are the same on the same time-frequency resources.

[0250] Figure 14 As shown in the schematic diagram of a communication method provided by an embodiment of the present application, this method can be applied to the first RAT, such as Figure 14 shown, this method may include:

[0251] Step 1401: The network device sends the eighth indication information to the terminal device; correspondingly, the terminal device receives the eighth indication information from the network device.

[0252] Among them, the eighth indication information is used to indicate the first DMRS port set, and the first DMRS port set is used for the first channel of the first RAT. The first DMRS port set includes one or more DMRS ports. The first channel is a physical uplink shared channel or a physical downlink shared channel.

[0253] Among them, the description of the first DMRS port set can refer to the detailed description of the first DMRS port set in the following two possible designs, and will not be described in detail here.

[0254] Step 1402: The network device sends the ninth indication information to the terminal device; correspondingly, the terminal device receives the ninth indication information from the network device.

[0255] Among them, the ninth indication information is used to indicate the reference frequency position corresponding to the DMRS of the first channel of the first RAT, and the reference frequency position is the starting frequency position at which the DMRS of the first channel of the first RAT is generated.

[0256] Step 1403: The network device uses one or more DMRS ports in the first DMRS port set to send the DMRS of the first channel of the first RAT according to the eighth indication information and the ninth indication information; correspondingly, the terminal device uses one or more DMRS ports in the first DMRS port set to receive the DMRS of the first channel of the first RAT according to the eighth indication information and the ninth indication information.

[0257] Among them, the first channel is the physical downlink shared channel.

[0258] Specifically, the network device can determine the first DMRS port set according to the eighth indication information, determine the reference frequency position corresponding to the DMRS of the first channel of the first RAT according to the ninth indication information, generate the DMRS of the first channel of the first RAT according to the reference frequency position, and then use one or more DMRS ports in the first DMRS port set to send the DMRS of the first channel of the first RAT. Correspondingly, the terminal device can determine the first DMRS port set according to the eighth indication information, determine the reference frequency position corresponding to the DMRS of the first channel of the first RAT according to the ninth indication information, and based on this reference frequency position, use one or more DMRS ports in the first DMRS port set to receive the DMRS of the first channel of the first RAT.

[0259] Alternatively, the above step 1403 can also be replaced by the following step 1404.

[0260] Step 1404: The terminal device uses one or more DMRS ports in the first DMRS port set to send the DMRS of the first channel of the first RAT according to the eighth indication information and the ninth indication information; correspondingly, the network device uses one or more DMRS ports in the first DMRS port set to receive the DMRS of the first channel of the first RAT according to the eighth indication information and the ninth indication information.

[0261] Among them, the first channel is the physical uplink shared channel.

[0262] Specifically, the terminal device may determine a first DMRS port set according to the eighth indication information, determine the reference frequency position corresponding to the DMRS of the first channel of the first RAT according to the ninth indication information, generate the DMRS of the first channel of the first RAT based on the reference frequency position, and then use one or more DMRS ports in the first DMRS port set to transmit the DMRS of the first channel of the first RAT. Correspondingly, the network device may determine a first DMRS port set according to the eighth indication information, determine the reference frequency position corresponding to the DMRS of the first channel of the first RAT according to the ninth indication information, and based on this reference frequency position, use one or more DMRS ports in the first DMRS port set to receive the DMRS of the first channel of the first RAT.

[0263] Based on the above Figure 14 shown method, the first DMRS port set is described in detail with reference to the following two possible designs:

[0264] In the first possible design, the DMRS ports included in the first DMRS port set are the same as the DMRS ports included in the second DMRS port set. That is, the first DMRS port set of the first RAT and the second DMRS port set of the second RAT can adopt the same design.

[0265] Among them, the second DMRS port set is used for the second channel of the second RAT, and the second channel is a physical uplink shared channel or a physical downlink shared channel.

[0266] Optionally, the time-domain resources associated with the DMRS ports in the first DMRS port set are the same as the time-domain resources associated with the DMRS ports in the second DMRS port set.

[0267] Optionally, the second channel of the second RAT uses one or more DMRS ports in the second DMRS port set, and one or more DMRS ports in the first DMRS port set are orthogonal to one or more DMRS ports in the second DMRS port set.

[0268] Exemplarily, one or more DMRS ports in the first DMRS port set and one or more DMRS ports in the second DMRS port set are frequency-division multiplexed and / or code-division multiplexed. Or it can be described as: The first RAT and the second RAT share a set of orthogonal DMRS ports, and the first channel of the first RAT and the second channel of the second RAT use different DMRS ports among them.

[0269] Optionally, the length of the time-domain orthogonal covercode (OCC) associated with the DMRS ports in the first DMRS port set is equal to the length of the time-domain OCC associated with the DMRS ports in the second DMRS port set.

[0270] Optionally, the length of the frequency-domain OCC associated with the DMRS ports in the first DMRS port set is equal to the length of the frequency-domain OCC associated with the DMRS ports in the second DMRS port set.

[0271] Wherein, the frequency-domain OCC is the OCC used in the frequency domain, the time-domain OCC is the OCC used in the time domain, and the length of the OCC is the number of elements included in the OCC sequence.

[0272] Exemplarily, taking the first RAT as a 6G communication system and the second RAT as a 5G communication system as an example, the first DMRS port set of the 6G communication system and the second DMRS port set of the 5G communication system can adopt the same design.

[0273] Wherein, the DMRS of the second channel of the 5G communication system can support multiple ports to support multiple spatial multiplexing layers or data streams. Orthogonality can be maintained between different ports through frequency-division multiplexing or code-division multiplexing. According to different parameters such as the DMRS type, the number of DMRS symbols, and the OCC, the number of ports supported by the DMRS of the second channel of the 5G communication system can be 4, 6, 8, 12, or 24, etc. The DMRS ports correspond one-to-one with the spatial multiplexing layers or data streams. These layers or data streams can come from the same user or different users, which is called single-user multiple input multiple output (SU-MIMO) or multi-user multiple input multiple output (MU-MIMO).

[0274] Based on this, the DMRS of the first channel of the 6G communication system and the DMRS of the second channel of the 5G communication system can adopt the same DMRS type, the number of DMRS type symbols, the base sequence, the OCC, etc., which is equivalent to enabling the DMRS of the first channel of the 6G communication system and the DMRS of the second channel of the 5G communication system to share a set of DMRS ports, that is, the first DMRS port set and the second DMRS port set are the same set of DMRS ports. Further, when the cells of the 6G communication system and the cells of the 5G communication system schedule their respective first channels and second channels, different DMRS ports in a set of DMRS ports are used respectively, thereby ensuring orthogonality between the DMRS of the first channel of the 6G communication system and the DMRS of the second channel of the 5G communication system and improving communication performance.

[0275] In a second possible design, the DMRS ports included in the second DMRS port set are part of the DMRS ports included in the first DMRS port set, or it is described that time-domain expansion (such as using an OCC with a longer length in the time domain) and / or frequency-domain expansion (such as using an OCC with a longer length in the frequency domain) can be performed based on the second DMRS port set to determine the first DMRS port set. That is, the number of DMRS ports included in the first DMRS port set is greater than the number of DMRS ports included in the second DMRS port set.

[0276] Among them, the second DMRS port set is used for the second channel of the second RAT, and the second channel is a physical uplink shared channel or a physical downlink shared channel.

[0277] Optionally, one or more DMRS ports in the second DMRS port set are used for the second channel of the second RAT, and one or more DMRS ports in the first DMRS port set are orthogonal to one or more DMRS ports in the second DMRS port set.

[0278] Exemplarily, one or more DMRS ports in the first DMRS port set and one or more DMRS ports in the second DMRS port set are frequency-division multiplexed and / or code-division multiplexed.

[0279] The following describes the first DMRS port set by taking frequency-domain expansion as an example:

[0280] Among them, any DMRS port in the first DMRS port set can be associated with 2*Q RBs, where Q is a positive integer.

[0281] Optionally, the first DMRS port set may include three CDM groups, each CDM group includes one or more DMRS ports in the first DMRS port set. Any DMRS port in the first CDM group is associated with the 1st, 2nd, 7th, and 8th subcarriers of each of the 2*Q RBs. Any DMRS port in the second CDM group is associated with the 3rd, 4th, 9th, and 10th subcarriers of each of the 2*Q RBs. Any DMRS port in the third CDM group is associated with the 5th, 6th, 11th, and 12th subcarriers of each of the 2*Q RBs.

[0282] Optionally, any DMRS port in the first DMRS port set can be associated with a frequency-domain OCC with a length of 8*Q.

[0283] Among them, the length of the frequency-domain OCC associated with the DMRS ports in the first DMRS port set is greater than the length of the frequency-domain OCC associated with the DMRS ports in the second DMRS port set.

[0284] Exemplarily, the length of the frequency-domain OCC associated with the DMRS ports in the first DMRS port set is a positive integer multiple of 2 of the length of the frequency-domain OCC associated with the DMRS ports in the second DMRS port set.

[0285] Exemplarily, taking the length of the frequency-domain OCC as 8 as an example, the frequency-domain OCC used by the DMRS of the first channel of the first RAT can be one or more of the 8 sequences shown in Table 3 below:

[0286] Table 3

[0287]

[0288] Exemplarily, as Figure 15 shown, taking the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT both using type 2 DMRS and occupying 2 symbols as an example, frequency-domain expansion can be performed on the basis of the second DMRS port set shown in (a) in Figure 15 to obtain the first DMRS port set shown in (b) in Figure 15 .

[0289] Among them, the length of the OCC used by the DMRS of the second channel of the second RAT in the frequency domain is 4, the corresponding number of DMRS ports is 24, any DMRS port in the second DMRS port set can be associated with 1 RB, the second DMRS port set can include three CDM groups, each CDM group includes one or more DMRS ports in the second DMRS port set, any DMRS port in the first CDM group is associated with the 1st, 2nd, 7th, and 8th subcarriers of 1 RB, any DMRS port in the second CDM group is associated with the 3rd, 4th, 9th, and 10th subcarriers of 1 RB, and any DMRS port in the third CDM group is associated with the 5th, 6th, 11th, and 12th subcarriers of 1 RB.

[0290] Among them, the length of the OCC used by the DMRS of the first channel of the first RAT in the frequency domain is 8, the corresponding number of DMRS ports is 48, any DMRS port in the first DMRS port set can be associated with 2 RBs, the first DMRS port set can include three CDM groups, each CDM group includes one or more DMRS ports in the first DMRS port set, any DMRS port in the first CDM group is associated with the 1st, 2nd, 7th, and 8th subcarriers of each of the 2 RBs, any DMRS port in the second CDM group is associated with the 3rd, 4th, 9th, and 10th subcarriers of each of the 2 RBs, and any DMRS port in the third CDM group is associated with the 5th, 6th, 11th, and 12th subcarriers of each of the 2 RBs.

[0291] The following takes time domain expansion as an example to describe the first DMRS port set:

[0292] Among them, the first DMRS port set can be associated with 4*P time domain symbols, where P is a positive integer.

[0293] Among them, the time domain resources associated with the DMRS ports in the second DMRS port set can be a part of the time domain resources associated with the DMRS ports in the first DMRS port set.

[0294] Exemplarily, the length of the time domain OCC associated with the DMRS ports in the first DMRS port set is greater than the length of the time domain OCC associated with the DMRS ports in the second DMRS port set.

[0295] For example, the length of the time domain OCC associated with the DMRS ports in the first DMRS port set is a positive integer multiple of 2 of the length of the time domain OCC associated with the DMRS ports in the second DMRS port set.

[0296] In the first possible implementation, any DMRS port in the first DMRS port set can be associated with 2 of the 4*P time domain symbols.

[0297] In a possible specific implementation, the first DMRS port set can include 2*P DMRS port subsets. Each DMRS port subset can include one or more DMRS ports in the first DMRS port set, and each DMRS port subset is respectively associated with 2 of the 4*P time domain symbols.

[0298] Based on the above possible implementation, any DMRS port in the first DMRS port set can be associated with a time domain OCC with a length of 2.

[0299] In the second possible implementation, any DMRS port in the first DMRS port set can be associated with all of the 4*P time domain symbols.

[0300] Based on the second possible implementation, optionally, any DMRS port in the first DMRS port set can be associated with a time domain OCC with a length of 4*P.

[0301] Based on the above descriptions of the first DMRS port set and the second DMRS port set, it can be understood that from the perspective of a terminal device, a terminal device of the first RAT can perceive the first DMRS port set but not the second DMRS port set, and the second DMRS port set is not configured for the terminal device of the first RAT. A terminal device of the second RAT can perceive the second DMRS port set but not the first DMRS port set, and the first DMRS port set is not configured for the terminal device of the second RAT. The first DMRS port set and the second DMRS port set objectively exist and satisfy the above relationship.

[0302] Based on the above Figure 14 For the method shown above, the following describes the ninth indication information for indicating the reference frequency position corresponding to the DMRS of the first channel of the first RAT.

[0303] Among them, the reference frequency position is the starting frequency position generated for the DMRS of the first channel of the first RAT.

[0304] Among them, the reference frequency position corresponding to the DMRS of the first channel of the first RAT can be determined according to the reference frequency position corresponding to the DMRS of the second channel of the second RAT.

[0305] Specifically, the reference frequency position corresponding to the DMRS of the first channel of the first RAT is the same as the reference frequency position corresponding to the DMRS of the second channel of the second RAT.

[0306] Optionally, the base sequence corresponding to the DMRS port in the first DMRS port set is the same as the base sequence corresponding to the DMRS port in the second DMRS port set.

[0307] Exemplarily, taking the first RAT as a 6G communication system and the second RAT as a 5G communication system as an example, for the second channel based on OFDM, the base sequence used by the DMRS of the second channel is generated across all common resource blocks (CRBs) in the frequency domain, but only a part located on the RBs used for the transmission of the second channel is transmitted. In other words, regardless of which RB the second channel transmission starts from, the frequency position referred to when generating the sequence used by the DMRS of the second channel is the first subcarrier of the first CRB, that is, as Figure 16Subcarrier 0 of CRB 0 as shown. Thus, it can be ensured that in the MU-MIMO scenario, the base sequences used by multiple terminal devices on the same time-frequency resources are the same, and then the DMRS signals of multiple co-scheduled terminal devices obtained based on the same base sequence are orthogonal to each other through an orthogonal cover code (OCC). If the base sequences used by the DMRS signals of these terminal devices are not the same, then the DMRS signals of these terminal devices are not orthogonal. This base sequence can be generated using a configurable identifier. Or, if this identifier is not configured, then this identifier defaults to the physical-layer cell identify (PCI).

[0308] Based on the above description, in order to ensure the orthogonality between the DMRS of the first channel of the 6G communication system and the DMRS of the second channel of the 5G communication system, that is, it is necessary to ensure that for the terminal devices of the 6G communication system and the terminal devices of the 5G communication system co-scheduled on the same time-frequency resources, the base sequences used by the DMRS of the first channel and the DMRS of the second channel are the same. However, due to the different ranges of the 5G spectrum and the 6G spectrum, the frequency positions of subcarrier 0 of CRB 0 of the 5G cell and subcarrier 0 of CRB 0 of the 6G cell may be different, and it may not be possible to ensure that the base sequences used by the DMRS of the second channel of the 5G communication system and the DMRS of the first channel of the 6G communication system are the same.

[0309] Based on this, the reference frequency position corresponding to the DMRS of the first channel of the first RAT may not be fixed to subcarrier 0 of CRB 0, but the network device can indicate the reference frequency position corresponding to the DMRS of the first channel of the first RAT through the ninth indication information, so as to ensure that the reference frequency position corresponding to the DMRS of the first channel of the first RAT is the same as the reference frequency position corresponding to the DMRS of the second channel of the second RAT, ensure that on the same time-frequency resources, the base sequences used by the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT are the same, so that the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT can be orthogonal to each other, improving the performance of the communication system.

[0310] Exemplarily, the ninth indication information may include the absolute radio frequency channel number (ARFCN) corresponding to the reference frequency position, or the ninth indication information may include the CRB index corresponding to the reference frequency position.

[0311] For example, as Figure 17As shown, the reference frequency position may be subcarrier 0 of CRB X in the first RAT.

[0312] Optionally, as Figure 17 shown, for CRBs 0 to CRB X-1 in the first RAT, the base sequence of the DMRS of the first channel mapped on these RBs may be the last segment of the DMRS sequence.

[0313] Optionally, different from the network device of the first RAT indicating the reference frequency position corresponding to the DMRS of the first channel of the first RAT through the ninth indication information, the network device of the first RAT may also send the thirteenth indication information to the terminal device of the first RAT. The thirteenth indication information is used to indicate the base sequence generation identifier corresponding to the DMRS of the first channel of the first RAT. The base sequence generated by the terminal device of the first RAT according to this base sequence generation identifier is the same as the base sequence generated by the terminal device of the second RAT.

[0314] Among them, the network device of the first RAT may configure an appropriate base sequence generation identifier N ID for the terminal device of the first RAT, and ensure that the base sequence of the DMRS of the first channel of the first RAT generated on the same time-frequency resource is the same as the base sequence of the DMRS of the second channel of the second RAT.

[0315] Exemplarily, taking the base sequence generation formula of the DMRS of the second channel of the second RAT for the DMRS of the first channel of the first RAT as an example, for the PDSCH of the first RAT, its DMRS sequence r(n) can be determined according to the following formula. The network device can determine the specific value of the base sequence generation identifier based on the following formula and indicate it to the terminal device through the thirteenth indication information:

[0316]

[0317] Among them, the pseudo-random sequence c(i) can be initialized according to the following formula:

[0318]

[0319] Among them, represents the number of symbols included in a time slot; represents the number of the time slot in the frame; l represents the number of the symbol in the time slot; is the above-mentioned base sequence generation identifier; λ represents the CDM group number; takes a value of 0 or 1.

[0320] Based on the method shown above Figure 14 as Figure 18As shown, the time-domain resources of the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT can completely overlap, and are kept orthogonal through frequency-division multiplexing and / or code-division multiplexing, ensuring that the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT can coexist through spatial-division multiplexing, ensuring that the DMRS are orthogonal to each other and improving communication performance.

[0321] Based on the above Figures 9 to 14 shown method, when the first RAT and the second RAT perform spectrum sharing, the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT can be based on Figure 9 or Figure 13 shown time-division multiplexing method to maintain orthogonality and avoid signal conflicts, and can also be based on Figure 14 shown frequency-division multiplexing / code-division multiplexing method to maintain orthogonality and avoid signal conflicts. It can be understood that the above time-division multiplexing method can also be combined with the frequency-division multiplexing / code-division multiplexing method to maintain orthogonality between the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT and avoid signal conflicts.

[0322] That is, the time-domain resources of the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT can partially overlap. In the non-overlapping time-domain resources, the Figure 9 or Figure 13 shown time-division multiplexing method can be used to maintain orthogonality between the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT; in the overlapping time-domain resources, the Figure 14 shown frequency-division multiplexing / code-division multiplexing method can be used to maintain orthogonality between the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT. On the basis of enabling more DMRS ports of the first channel of the first RAT, it is ensured that the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT coexist through spatial-division multiplexing.

[0323] Exemplarily, as Figure 19 shown, the time-domain resources of the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT can partially overlap. In the non-overlapping time-domain resources (such as symbols 4 and 5), the network device of the second RAT can send the third information or the fourth information to the terminal device of the second RAT to indicate the time-domain resources and frequency-domain resources not used for the second-channel transmission. In the overlapping time-domain resources (such as symbols 2 and 3), the Figure 14 shown frequency-division multiplexing / code-division multiplexing method can be used to maintain orthogonality between the DMRS of the first channel of the first RAT and the DMRS of the second channel of the second RAT.

[0324] Among them, the third information is used to indicate the time-domain resources and frequency-domain resources not used for the second-channel transmission. The fourth information includes the configuration information of the DMRS of the first channel of the first RAT, and the time-frequency resources associated with the fourth information are not used for the transmission of the second channel of the second RAT. The description of "the network device of the second RAT can send the third information to the terminal device of the second RAT" can refer to the above Figure 9 related description of "the network device of the first RAT can send the first information to the terminal device of the first RAT" in, and the description of "the network device of the second RAT can send the fourth information to the terminal device of the second RAT" can refer to the above Figure 13 related description of "the network device of the first RAT can send the second information to the terminal device of the first RAT" in, which will not be elaborated here.

[0325] For example, taking the first RAT as a 6G communication system and the second RAT as a 5G communication system as an example, the maximum number of time-domain symbols of the DMRS of the second channel of the 5G communication system is 2, which to a certain extent limits the maximum number of supported DMRS ports, and thus limits the maximum number of spatial multiplexing layers or streams. Therefore, the maximum number of time-domain symbols of the DMRS of the first channel of the 6G communication system can be greater than 2 to support more DMRS ports. It can be an integer multiple of 2, such as 4, 6, 8, etc.

[0326] Taking the maximum number of time-domain symbols of the DMRS of the first channel of the 6G communication system as 4 as an example below, with reference to the following two possible designs, the DMRS of the first channel of the 6G communication system and the DMRS of the second channel of the 5G communication system are illustrated by examples:

[0327] In the first possible design, the DMRS of the first channel of the 6G communication system can use an OCC with a length of 2 in the time domain. The DMRS ports can maintain orthogonality not only through frequency-division multiplexing or code-division multiplexing, but also through time-division multiplexing. Exemplarily, as Figure 20 shown, taking the type 2 DMRS in the DMRS of the second channel of the 5G communication system as an example, the DMRS of the first channel of the 6G communication system can support 6 CDM groups. Each CDM group has 2 symbols in the time domain, 4 subcarriers in the frequency domain, an OCC with a length of 2 in the time domain, and an OCC with a length of 4 in the frequency domain. Then each CDM group can support 8 ports, for a total of 48 ports. The DMRS of the second channel of the 5G communication system overlaps with the first two symbols or the last two symbols of the DMRS of the first channel of the 6G communication system.

[0328] Optionally, in the first possible design, the 2-length time-domain OCC used by the DMRS of the first channel of the 6G communication system can be multiplexed with the OCC used by the DMRS of the second channel of the 5G communication system. Exemplarily, as shown in Table 4 below, the 2-length OCC can be any of the following:

[0329] Table 4

[0330] n Time-domain OCC 0 [+1 +1] 1 [+1 -1]

[0331] In the second possible design, the DMRS of the first channel of the 6G communication system can use a 4-length OCC in the time domain, and the DMRS ports maintain orthogonality through frequency-division multiplexing or code-division multiplexing. Exemplarily, as Figure 21 shown, taking the type 2 DMRS in the DMRS of the second channel of the 5G communication system as an example, the DMRS of the first channel of the 6G communication system can support 3 CDM groups. Each CDM group has 4 symbols in the time domain, 4 subcarriers in the frequency domain, uses a 4-length OCC in the time domain, and a 4-length OCC in the frequency domain. Then each CDM group can support 16 ports, for a total of 48 ports. The DMRS of the second channel of the 5G communication system overlaps with the first two symbols or the last two symbols of the DMRS of the first channel of the 6G communication system.

[0332] Optionally, in the second possible design, the 4-length time-domain OCC used by the DMRS of the first channel of the 6G communication system can be any of those shown in Table 5 below:

[0333] Table 5

[0334] n Time-domain OCC 0 [+1 +1 +1 +1] 1 [+1 -1 +1 -1] 2 [+1 +1 -1 -1] 3 [+1 -1 -1 +1]

[0335] In the above first possible design, the time-domain resources of a DMRS port of the first channel of a 6G communication system are aligned with those of a DMRS port of the second channel of a 5G communication system, and its multiplexing efficiency is higher than that of the second possible design. In the above second possible design, the number of time-domain symbols of a DMRS port of the first channel of a 6G communication system is more, and its demodulation performance is higher than that of the first possible design. It can be determined which possible design to use according to the specific communication scenario, without limitation.

[0336] It should be noted that the various embodiments of this application can be implemented independently or in combination, without limitation. If there is no special description and logical conflict, the terms and / or descriptions between different embodiments provided in this application are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0337] It can be understood that in the embodiments of the present application, the execution entity may execute some or all of the steps in the embodiments of the present application. These steps or operations are only examples, and the embodiments of the present application may also execute other operations or various deformations of the operations. In addition, each step may be executed in a different order presented in the embodiments of the present application, and it is possible that not all of the operations in the embodiments of the present application need to be executed.

[0338] The above mainly introduces the solution provided by the embodiments of the present application from the perspective of interaction between devices. It can be understood that in order to implement the above functions, each device includes the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described function for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0339] The embodiments of the present application can divide each device into function modules according to the above method examples. For example, each function module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software function module. It should be noted that the division of modules in the embodiments of the present application is illustrative, only a logical function division, and there may be other division methods in actual implementation.

[0340] In the case of dividing each function module corresponding to each function, Figure 22 A communication device 220 is shown. The communication device 220 may execute the actions performed by the terminal device in the method shown above, or execute the actions performed by the network device in the method shown above. All relevant contents of each step involved in the above method embodiments can be cited in the function description of the corresponding function module, and the technical effects that can be obtained can refer to the above method embodiments, which will not be elaborated here. Figures 9 to 21 The above Figures 9 to 21 shown method, and all relevant contents of each step involved in the above method embodiments can be cited in the function description of the corresponding function module. The technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.

[0341] Among them, the communication device 220 may include a transceiver module 2201 and a processing module 2202. Exemplarily, the communication device 220 may be a communication device, or a chip applied to a communication device, or other combined devices, components, etc. having the functions of the above communication device. When the communication device 220 is a communication device, the transceiver module 2201 may be a transceiver, and the transceiver may include an antenna, a radio frequency circuit, etc.; the processing module 2202 may be a processor (or, processing circuit), such as a baseband processor, and one or more CPUs may be included in the baseband processor. When the communication device 220 is a component having the functions of the above communication device, the transceiver module 2201 may be a radio frequency unit; the processing module 2202 may be a processor (or, processing circuit), such as a baseband processor. When the communication device 220 is a chip system, the transceiver module 2201 may be an input / output interface of a chip (such as a baseband chip); the processing module 2202 may be a processor (or, processing circuit) of the chip system, and may include one or more central processing units. It should be understood that the transceiver module 2201 in the embodiments of the present application may be implemented by a transceiver or transceiver-related circuit components; the processing module 2202 may be implemented by a processor or processor-related circuit components (or, referred to as a processing circuit).

[0342] For example, the transceiver module 2201 may be used to perform Figures 9 to 21 all the transceiver operations performed by the communication device in the embodiments shown, and / or other processes for supporting the technologies described herein; the processing module 2202 may be used to perform Figures 9 to 21 all the operations other than the transceiver operations performed by the communication device in the embodiments shown, and / or other processes for supporting the technologies described herein.

[0343] As another implementable manner, Figure 22 the transceiver module 2201 in Figure 22 may be replaced by a transceiver, and the transceiver may integrate the functions of the transceiver module 2201; the processing module 2202 may be replaced by a processor, and the processor may integrate the functions of the processing module 2202. Further,

[0344] Optionally, when the processing module 2202 is replaced by a processor and the transceiver module 2201 is replaced by a transceiver, the communication device 220 involved in the embodiments of the present application may also be Figure 23 the communication device 230 shown. Among them, the processor may be a logic circuit 2301, and the transceiver may be an interface circuit 2302. Further, Figure 23 the communication device 230 shown may also include a memory 2303.

[0345] An embodiment of the present application further provides a computer program product, which can implement the functions of any of the above method embodiments when executed by a computer.

[0346] An embodiment of the present application further provides a computer program, which can implement the functions of any of the above method embodiments when executed by a computer.

[0347] An embodiment of the present application further provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by a computer program instructing relevant hardware. The program can be stored in the above computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be an internal storage unit of any of the foregoing embodiments of the terminal (including the data sending end and / or the data receiving end), such as the hard disk or memory of the terminal. The above computer-readable storage medium can also be an external storage device of the above terminal, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the above terminal. Further, the above computer-readable storage medium can also include both the internal storage unit and the external storage device of the above terminal. The above computer-readable storage medium is used to store the above computer program and other programs and data required by the above terminal. The above computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0348] It should be noted that the terms "first" and "second" in the specification, claims and drawings of the present application are used to distinguish different objects, rather than to describe a specific order. "First" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this embodiment, unless otherwise specified, the meaning of "a plurality" is two or more.

[0349] In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0350] It should be understood that in this application, "at least one (item)" means one or more. "Multiple" means two or more. "At least two (items)" means two or three or more. "And / or" is used to describe the association relationship of associated objects and indicates that three relationships can exist. For example, "A and / or B" can represent three situations: only A exists, only B exists, and both A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one (item) of the following" or its similar expression refers to any combination of these items, including any combination of single item (item) or plural items (items). For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple. "When..." and "if" both refer to corresponding processing under a certain objective situation, not a time limit, and do not require a judgment action when implemented, nor does it mean that there are other limitations.

[0351] In the embodiments of this application, words such as "exemplary" or "for example" are used to give examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific way for easy understanding.

[0352] In this application, "sending information to... (terminal device)" can be understood as the destination of the information being the terminal device. It can include directly or indirectly sending information to the terminal device. "Receiving information from... (terminal device)" can be understood as the source of the information being the terminal device, and it can include directly or indirectly receiving information from the terminal device. Necessary processing may be performed on the information between the source and destination of the information sending, such as format change, etc., but the destination can understand the valid information from the source.

[0353] Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and conciseness of description, only the above division of each functional module is used as an example. In actual applications, the above functions can be allocated to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

[0354] In several embodiments provided by this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of the devices or units can be in electrical, mechanical or other forms.

[0355] The units described as separate components may or may not be physically separated. The components displayed as units can be one physical unit or multiple physical units, that is, they can be located in one place, or they can be distributed to multiple different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0356] In addition, the functional units in each embodiment of this application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0357] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiments of this application essentially or all or part of this technical solution can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to enable a device (which can be a single-chip microcomputer, a chip, etc.) or a processor to execute all or part of the steps of the methods described in each embodiment of this application. And the foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks or optical discs that can store program codes.

Claims

1. A communication method, characterized in that, The method is applied to a first radio access technology (RAT), and the method includes: Receiving first information from a network device; wherein, the first information is used to indicate time-domain resources and frequency-domain resources not used for transmission on a first channel; the frequency-domain resources indicated by the first information as not used for transmission on the first channel include one or more subcarriers in one or more resource blocks (RBs) indicated by the first information as not used for transmission on the first channel; the first channel is a physical uplink shared channel or a physical downlink shared channel; Determining, according to the first information, the time-domain resources and frequency-domain resources not used for transmission on the first channel.

2. The method according to claim 1, wherein The first information includes configuration information of one or more rate matching patterns; wherein, the time-frequency resources associated with the rate matching pattern are the time-domain resources and the frequency-domain resources not used for transmission on the first channel.

3. The method according to claim 2, wherein The configuration information of each rate matching pattern includes first indication information and second indication information; wherein, the first indication information is used to indicate one or more RBs associated with the rate matching pattern, and the second indication information is used to indicate one or more subcarriers in one or more RBs associated with the rate matching pattern.

4. The method according to claim 3, wherein The first indication information is a bit map, and each bit in the bit map is used to indicate whether the RB corresponding to each bit belongs to the rate matching pattern.

5. The method according to claim 3 or 4, wherein For each rate matching pattern, the second indication information is used to indicate a subcarrier pattern commonly associated with all RBs associated with the rate matching pattern, wherein the subcarrier pattern includes one or more subcarriers in one RB; or For each rate matching pattern, the second indication information is used to indicate subcarrier patterns respectively associated with all RBs associated with the rate matching pattern, wherein the subcarrier pattern includes one or more subcarriers in one RB.

6. The method according to claim 2, wherein The configuration information of each rate matching pattern includes third indication information; wherein, the third indication information is used to indicate one or more RBs associated with the rate matching pattern and one or more subcarriers associated in the one or more RBs.

7. The method according to claim 6, wherein The third indication information includes N*M bits, N is the number of RBs corresponding to the third indication information, and each RB corresponds to M bits; the M bits corresponding to each RB are used to indicate whether the RB corresponding to the M bits belongs to the rate matching pattern and the subcarrier pattern associated with the RB.

8. The method according to claim 7, wherein The first value of the M bits is used to indicate that the RB corresponding to the M bits does not belong to the rate matching pattern; Or The second value of the M bits is used to indicate that the RBs corresponding to the M bits belong to the rate matching pattern, and the RBs are associated with a first subcarrier pattern; or The third value of the M bits is used to indicate that the RBs corresponding to the M bits belong to the rate matching pattern, and the RBs are associated with a second subcarrier pattern; or The fourth value of the M bits is used to indicate that the RBs corresponding to the M bits belong to the rate matching pattern, and the RBs are associated with a third subcarrier pattern; or The fifth value of the M bits is used to indicate that the RBs corresponding to the M bits belong to the rate matching pattern, and the RBs are associated with a fourth subcarrier pattern.

9. The method according to any one of claims 5, 7 - 8, characterized in that, The subcarrier pattern is one of the following subcarrier patterns: The first subcarrier pattern, which includes all subcarriers in one RB; The second subcarrier pattern, which includes the 1st, 3rd, 5th, 7th, 9th, and 11th subcarriers in one RB; The third subcarrier pattern, which includes the 1st, 2nd, 7th, and 8th subcarriers in one RB; The fourth subcarrier pattern, which includes the 1st, 2nd, 3rd, 4th, 7th, 8th, 9th, and 10th subcarriers in one RB.

10. The method according to any one of claims 2-9, wherein The configuration information of each rate matching pattern further includes fourth indication information; wherein, the fourth indication information is used to indicate the time domain period of the rate matching pattern and the time domain resource pattern within the period.

11. The method according to claim 10, wherein The candidate values of the time domain period include one or more of the following: 1, 2, 4, 5, 8, 10, 20, 40, 80, 160, or 320 time units, and each time unit includes one or more time slots or subframes corresponding to the rate matching pattern.

12. The method according to any one of claims 2-11, wherein The rate matching pattern is a rate matching pattern exclusive to a bandwidth part BWP; or The rate matching pattern is a cell-common rate matching pattern.

13. The method according to any one of claims 2-12, characterized in that, The method further includes: Receiving fifth indication information from the network device; wherein, the fifth indication information is used to indicate the rate matching pattern that is effective among the one or more rate matching patterns.

14. The method according to any one of claims 1-13, wherein The one or more subcarriers indicated by the first information include all subcarriers in one RB; or The one or more subcarriers indicated by the first information include the 1st, 3rd, 5th, 7th, 9th, and 11th subcarriers in one RB; or The one or more subcarriers indicated by the first information include the 1st, 2nd, 7th, and 8th subcarriers in one RB; or The one or more subcarriers indicated by the first information include the 1st, 2nd, 3rd, 4th, 7th, 8th, 9th, and 10th subcarriers in one RB.

15. The method according to any one of claims 1-14, wherein The time-domain resources and the frequency-domain resources are determined according to the demodulation reference signal (DMRS) of a second channel of a second radio access technology (RAT); wherein, the second channel is a physical uplink shared channel or a physical downlink shared channel.

16. A communication method, characterized in that, The method is applied to a first radio access technology (RAT), and the method includes: Determine first information. Send the first information to a terminal device; wherein, the first information is used to indicate time-domain resources and frequency-domain resources not used for transmission of a first channel, and the first information indicating the frequency-domain resources not used for transmission of the first channel includes that the first information indicates one or more subcarriers in one or more resource blocks (RBs) not used for transmission of the first channel; the first channel is a physical uplink shared channel or a physical downlink shared channel.

17. The method according to claim 16, wherein The first information includes configuration information of one or more rate matching patterns; wherein, the time-frequency resources associated with the rate matching pattern are the time-domain resources and the frequency-domain resources not used for transmission of the first channel.

18. The method according to claim 17, wherein The method further includes: Send fifth indication information to the terminal device; wherein, the fifth indication information is used to indicate the rate matching pattern that is effective among the one or more rate matching patterns.

19. A communication method, characterized in that, The method is applied to a first radio access technology (RAT), and the method includes: Receive second information from a network device; wherein, the second information includes configuration information of one or more demodulation reference signals (DMRSs) of a second channel of a second RAT; the second channel is a physical uplink shared channel or a physical downlink shared channel; According to the second information, determine the time-frequency resources associated with the second information, and the time-frequency resources associated with the second information are not used for transmission of a first channel of a first RAT; the first channel is a physical uplink shared channel or a physical downlink shared channel.

20. The method according to claim 19, wherein The configuration information of each DMRS includes at least one of the following: DMRS type, number of DMRS symbols, time-domain position of DMRS, frequency-domain resources of DMRS, DMRS code division multiplexing (CDM) group without data.

21. The method according to claim 19 or 20, characterized in that, The method further includes: Receive sixth indication information from the network device; wherein, the sixth indication information is used to indicate the configuration information of the DMRS that is effective among the configuration information of the one or more DMRSs.

22. The method according to any one of claims 19-21, wherein At least one of the configuration information of the one or more DMRSs includes seventh indication information; wherein, the seventh indication information is used to indicate that the time-frequency resources associated with the DMRS are not used for transmission of the first channel of the first RAT.

23. A communication method, characterized in that, The method is applied to a first radio access technology (RAT), and the method includes: Determine second information. Send the second information to the terminal device; wherein, the second information includes configuration information of one or more demodulation reference signals (DMRSs) of a second channel of a second radio access technology (RAT); the second channel is a physical uplink shared channel or a physical downlink shared channel; the time-frequency resources associated with the second information are not used for the transmission of a first channel of a first RAT, and the first channel is a physical uplink shared channel or a physical downlink shared channel.

24. The method according to claim 23, wherein The method further includes: Send sixth indication information to the terminal device; wherein, the sixth indication information is used to indicate the configuration information of the DMRSs that are in effect among the configuration information of the one or more DMRSs.

25. A communication method, characterized in that, The method is applied to a first radio access technology (RAT), and the method includes: Receive eighth indication information from a network device; wherein, the eighth indication information is used to indicate a first DMRS port set, and the first DMRS port set is for a first channel of the first RAT, and the first channel is a physical uplink shared channel or a physical downlink shared channel; Receive ninth indication information from the network device; wherein, the ninth indication information is used to indicate a reference frequency position corresponding to the DMRS of the first channel of the first RAT, and the reference frequency position is the starting frequency position at which the DMRS of the first channel of the first RAT is generated; According to the eighth indication information and the ninth indication information, receive the DMRS of the first channel of the first RAT using one or more DMRS ports in the first DMRS port set, wherein the first channel is a physical downlink shared channel; or, transmit the DMRS of the first channel of the first RAT using one or more DMRS ports in the first DMRS port set, wherein the first channel is a physical uplink shared channel.

26. The method according to claim 25, wherein: Any DMRS port in the first DMRS port set is associated with 2*Q resource blocks (RBs), where Q is a positive integer.

27. The method according to claim 26, wherein: The first DMRS port set includes three code division multiplexing (CDM) groups, each CDM group includes one or more DMRS ports in the first DMRS port set, wherein any DMRS port in the first CDM group is associated with the 1st, 2nd, 7th, and 8th subcarriers of each of the 2*Q RBs, any DMRS port in the second CDM group is associated with the 3rd, 4th, 9th, and 10th subcarriers of each of the 2*Q RBs, and any DMRS port in the third CDM group is associated with the 5th, 6th, 11th, and 12th subcarriers of each of the 2*Q RBs.

28. The method according to claim 26 or 27, wherein: Any DMRS port in the first DMRS port set is associated with a frequency-domain orthogonal mask (OCC) with a length of 8*Q.

29. The method according to any one of claims 25-28, wherein: The first DMRS port set is associated with 4*P time-domain symbols, where P is a positive integer.

30. The method according to claim 29, wherein any DMRS port in the first DMRS port set is associated with 2 time-domain symbols among the 4*P time-domain symbols.

31. The method according to claim 29 or 30, wherein the first DMRS port set includes 2*P DMRS port subsets, each of the DMRS port subsets includes one or more DMRS ports in the first DMRS port set, and each of the DMRS port subsets is respectively associated with 2 time-domain symbols among the 4*P time-domain symbols.

32. The method according to any one of claims 29-31, wherein any DMRS port in the first DMRS port set is associated with a time-domain OCC with a length of 2.

33. The method according to claim 29, wherein any DMRS port in the first DMRS port set is associated with all the time-domain symbols among the 4*P time-domain symbols.

34. The method according to claim 29 or 33, wherein any DMRS port in the first DMRS port set is associated with a time-domain OCC with a length of 4*P.

35. The method according to any one of claims 25-34, wherein the ninth indication information includes the absolute radio frequency channel number corresponding to the reference frequency position; or the ninth indication information includes the common resource block CRB index corresponding to the reference frequency position.

36. The method according to any one of claims 25-35, wherein the base sequence corresponding to the DMRS port in the first DMRS port set is the same as the base sequence corresponding to the DMRS port in the second DMRS port set, wherein the second DMRS port set is used for a second channel of a second RAT, and the second channel is a physical uplink shared channel or a physical downlink shared channel.

37. The method according to any one of claims 25-36, wherein the reference frequency position corresponding to the DMRS of the first channel of the first RAT is the same as the reference frequency position corresponding to the DMRS of the second channel of the second RAT.

38. A communication method, characterized in that, The method is applied to a first radio access technology RAT, and the method includes: sending eighth indication information to a terminal device; wherein the eighth indication information is used to indicate a first demodulation reference signal DMRS port set; the first DMRS port set is used for a first channel of the first RAT, and the first channel is a physical uplink shared channel or a physical downlink shared channel; sending ninth indication information to the terminal device; wherein the ninth indication information is used to indicate the reference frequency position corresponding to the DMRS of the first channel of the first RAT, and the reference frequency position is the starting frequency position generated by the DMRS of the first channel of the first RAT; According to the eighth indication information and the ninth indication information, receive the DMRS of the first channel of the first RAT by using one or more DMRS ports in the first DMRS port set, where the first channel is a physical uplink shared channel; or transmit the DMRS of the first channel of the first RAT by using one or more DMRS ports in the first DMRS port set, where the first channel is a physical downlink shared channel.

39. A communication device, characterized in that, The communication device includes a processor; the processor is configured to run a computer program or instruction, so that the communication method according to any one of claims 1-15 is executed, or the communication method according to any one of claims 16-18 is executed, or the communication method according to any one of claims 19-22 is executed, or the communication method according to any one of claims 23-24 is executed, or the communication method according to any one of claims 25-37 is executed, or the communication method according to claim 38 is executed.

40. The communication device according to claim 39, wherein The communication device further includes a memory, and the memory is configured to store the computer program or instruction.

41. A communication device, characterized in that, The communication device includes an interface circuit and a logic circuit; the interface circuit is configured to input and / or output information; the logic circuit is configured to execute the communication method according to any one of claims 1-15, or execute the communication method according to any one of claims 16-18, or execute the communication method according to any one of claims 19-22, or execute the communication method according to any one of claims 23-24, or execute the communication method according to any one of claims 25-37, or execute the communication method according to claim 38, and process and / or generate the information according to the information.

42. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions or a program, and when the computer instructions or the program runs on a computer, the communication method according to any one of claims 1-15 is executed, or the communication method according to any one of claims 16-18 is executed, or the communication method according to any one of claims 19-22 is executed, or the communication method according to any one of claims 23-24 is executed, or the communication method according to any one of claims 25-37 is executed, or the communication method according to claim 38 is executed.

43. A computer program product, characterized in that, The computer program product includes computer instructions; when some or all of the computer instructions are run on a computer, the communication method according to any one of claims 1-15 is caused to be executed, or the communication method according to any one of claims 16-18 is caused to be executed, or the communication method according to any one of claims 19-22 is caused to be executed, or the communication method according to any one of claims 23-24 is caused to be executed, or the communication method according to any one of claims 25-37 is caused to be executed, or the communication method according to claim 38 is caused to be executed.

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