CN119316869B - Method for determining ratio of PDSCH power to DMRS power and first device - Google Patents
Method for determining ratio of PDSCH power to DMRS power and first device Download PDFInfo
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Abstract
The application provides a method and first equipment for determining the ratio of PDSCH power to DMRS power, wherein the method comprises the steps that first equipment receives first signaling, the first signaling comprises first Code Division Multiplexing (CDM) group quantity, DMRS type and first frequency division multiplexing parameters, the first CDM group quantity is CDM group quantity which cannot be used for PDSCH data transmission in REs used for DMRS, the DMRS type is used for indicating the DMRS signal port mapping type, the first frequency division multiplexing parameters are frequency division multiplexing parameters of communication resources and sensing resources, the ratio of PDSCH power to DMRS power is determined according to the first CDM group quantity, the DMRS type and the first frequency division multiplexing parameters, so that sensing and communication frequency division multiplexing scenes in a sense-of-sense integrated scene are effectively supported, the influence of sensing functions on communication performance in an existing communication system is reduced, and the sense performance and the accuracy of communication demodulation are guaranteed.
Description
Technical Field
The application relates to the technical field of communication, in particular to a method for determining the ratio of PDSCH power to DMRS power and first equipment.
Background
In the integrated system of sensing communication, sensing and communication are realized in a time division multiplexing or frequency division multiplexing mode. In order to ensure the perception performance of the system, the perception bandwidth and the sending power are dynamically adjusted according to indexes such as the perception range, the resolution, the precision and the like. The default power in the existing 5G system is used by communication, when the terminal demodulates, the terminal needs to demodulate according to different sending powers, otherwise, erroneous judgment can occur. Therefore, in the frequency division multiplexing communication system, the dynamic adjustment of the sensing bandwidth and the transmitting power can affect the sensing and communication modulation and demodulation performance of the system.
In the current 5G communication system, the downlink power control method includes:
The EPRE of the physical downlink shared channel (Physical Downlink SHARED CHANNEL, PDSCH) is determined based on the Energy Per Resource Element (EPRE) of the channel state Information reference signal (CHANNEL STATE Information REFERENCE SIGNAL, CSI-RS) and a higher layer parameter (powerControlOffset). When the PDSCH and the DMRS are subjected to frequency division multiplexing, the terminal can indirectly obtain the DMRS EPRE in a mode of indicating the ratio of the DMRS EPRE to PDSCH EPRE, and the value of the DMRS EPRE is related to the frequency division multiplexing mode of the PDSCH and the DMRS.
In order to improve the DMRS estimation performance, the base station performs power boosting (power boosting) on the DMRS. The PDSCH and DMRS have different frequency division multiplexing schemes, and the corresponding power increase factors are different.
If the sensing function is introduced into the existing communication system, the relation between sensing and communication frequency division multiplexing influences the power boosting factor, thereby influencing the ratio of PDSCH power to DMRS power, if the receiving end determines the ratio of PDSCH power to DMRS power according to the existing mode, demodulation errors of the receiving end may be caused.
Disclosure of Invention
The application aims to provide a method and first equipment for determining the ratio of PDSCH power to DMRS power, which are used for solving the problem that the demodulation error of a receiving end can be caused by the determination mode of the ratio of the existing PDSCH power to the DMRS power after the existing communication system introduces a sensing function.
In order to solve the above problems, an embodiment of the present application provides a method for determining a ratio of PDSCH power of a physical downlink shared channel to DMRS power of a demodulation reference signal, which is executed by a first device, the method including:
Receiving a first signaling, wherein the first signaling comprises a first Code Division Multiplexing (CDM) group number, a DMRS type and a first frequency division multiplexing parameter, the first CDM group number is the CDM group number which cannot be used for PDSCH data transmission in a Resource Element (RE) used for the DMRS, the DMRS type is used for indicating a DMRS signal port mapping type, and the first frequency division multiplexing parameter is the frequency division multiplexing parameter of communication resources and perception resources;
And determining the ratio of PDSCH power to DMRS power according to the first CDM group number, the DMRS type and the first frequency division multiplexing parameter.
Wherein the first frequency division multiplexing parameter includes:
a first indication field for indicating the number of CDM groups occupied by a sensing signal in an RE for DMRS;
Or alternatively
And the first equipment can determine the quantity of CDM groups occupied by the perception signals in the RE used for the DMRS according to the resource mapping information.
Wherein determining the ratio of PDSCH power to DMRS power according to the first CDM group number, DMRS type, and the first frequency division multiplexing parameter includes:
Determining a second CDM group number according to the first CDM group number and the CDM group number occupied by the sensing signal in the RE used for the DMRS, wherein the second CDM group number is the CDM group number which cannot be used for PDSCH data transmission and cannot be used for sensing signal transmission in the RE used for the DMRS;
Determining a ratio of PDSCH power to DMRS power according to the second CDM group number, the DMRS type, and the first mapping table;
The first mapping table comprises a mapping relation among the number of the second CDM groups, the DMRS type and the ratio of PDSCH power to DMRS power.
Wherein the determining the second CDM group number according to the first CDM group number and the CDM group number occupied by the perceived signal in the RE for DMRS includes:
Determining that the second CDM group number is equal to a difference between the first CDM group number and a CDMR group number occupied by a perceived signal in the RE for DMRS.
Wherein determining the ratio of PDSCH power to DMRS power according to the first CDM group number, DMRS type, and the first frequency division multiplexing parameter includes:
determining a ratio of PDSCH power to DMRS power according to the first CDM group number, the CDM group number occupied by the perceived signal in the RE for DMRS, the DMRS type, and a second mapping table;
The second mapping table includes a mapping relationship among the first CDM group number, the CDM group number occupied by the sensing signal in the RE for DMRS, the DMRS type, and a ratio of the PDSCH power to the DMRS power.
The embodiment of the application also provides first equipment, which comprises a processor and a transceiver, wherein the transceiver is used for receiving and transmitting data under the control of the processor, and the processor is used for executing the following operations:
Receiving a first signaling, wherein the first signaling comprises a first Code Division Multiplexing (CDM) group number, a DMRS type and a first frequency division multiplexing parameter, the first CDM group number is the CDM group number which cannot be used for PDSCH data transmission in resource element RE of the DMRS, the DMRS type is used for indicating the DMRS signal port mapping type, and the first frequency division multiplexing parameter is the frequency division multiplexing parameter of communication resources and perception resources;
And determining the ratio of PDSCH power to DMRS power according to the first CDM group number, the DMRS type and the first frequency division multiplexing parameter.
Wherein the first frequency division multiplexing parameter includes:
a first indication field for indicating the number of CDM groups occupied by a sensing signal in an RE for DMRS;
Or alternatively
And the first equipment can determine the quantity of CDM groups occupied by the perception signals in the RE used for the DMRS according to the resource mapping information.
Wherein the processor is further configured to perform the following:
Determining a second CDM group number according to the first CDM group number and the CDM group number occupied by the sensing signal in the RE used for the DMRS, wherein the second CDM group number is the CDM group number which cannot be used for PDSCH data transmission and cannot be used for sensing signal transmission in the RE used for the DMRS;
Determining a ratio of PDSCH power to DMRS power according to the second CDM group number, the DMRS type, and the first mapping table;
The first mapping table comprises a mapping relation among the number of the second CDM groups, the DMRS type and the ratio of PDSCH power to DMRS power.
Wherein the processor is further configured to perform the following:
Determining that the second CDM group number is equal to a difference between the first CDM group number and a CDMR group number occupied by a perceived signal in the RE for DMRS.
Wherein the processor is further configured to perform the following:
determining a ratio of PDSCH power to DMRS power according to the first CDM group number, the CDM group number occupied by the perceived signal in the RE for DMRS, the DMRS type, and a second mapping table;
The second mapping table includes a mapping relationship among the first CDM group number, the CDM group number occupied by the sensing signal in the RE for DMRS, the DMRS type, and a ratio of the PDSCH power to the DMRS power.
The embodiment of the application also provides first equipment, which comprises a memory, a processor and a program stored in the memory and capable of running on the processor, wherein the processor realizes the method for determining the ratio of PDSCH power to DMRS power when executing the program.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps in the PDSCH power to DMRS power ratio determining method described above.
Embodiments of the present application also provide a computer program product comprising computer instructions which, when executed by a processor, implement the steps of the PDSCH power to DMRS power ratio determination method described above.
The technical scheme of the application has at least the following beneficial effects:
According to the PDSCH power and DMRS power ratio determining method and the first device, aiming at the sensing and communication frequency division multiplexing scene, the first device determines the PDSCH power and DMRS power ratio according to the frequency division multiplexing parameters of communication resources and sensing resources, the DMR type and the quantity of CDM groups which cannot be used for PDSCH data transmission in REs used for the DMRS, so that the sensing and communication frequency division multiplexing scene in the sense-through integrated scene is effectively supported, the influence of sensing functions introduced into the existing communication system on communication performance is reduced, and the sensing performance and the accuracy of communication demodulation are ensured.
Drawings
Fig. 1 is a flowchart showing steps of a method for determining a ratio of PDSCH power to DMRS power according to an embodiment of the present application;
Fig. 2 shows one of DMRS mapping schemes of DMRS type 1 provided in the application embodiment;
Fig. 3 shows a second DMRS mapping diagram of DMRS type 1 provided in the application embodiment;
Fig. 4 shows a DMRS mapping diagram of an example one provided by an embodiment of the present application;
Fig. 5 shows a schematic structural diagram of a first device according to an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present application provides a method for determining a ratio of PDSCH power of a physical downlink shared channel to DMRS power of a demodulation reference signal, which is executed by a first device, where the method includes:
Step 101, receiving a first signaling, where the first signaling includes a first code division multiplexing CDM group number, a DMRS type, and a first frequency division multiplexing parameter, where the first CDM group number is a CDM group number that cannot be used for PDSCH data transmission in a resource element RE of the DMRS, the DMRS type is used to indicate a DMRS signal port mapping type, and the first frequency division multiplexing parameter is a frequency division multiplexing parameter of a communication resource and a sensing resource;
wherein the first CDM group number may be referred to as Number of DMRS CDM group(s) withoutdata, i.e., REs for DMRS cannot be simultaneously used for PDSCH data transmission (withoutdata includes transmitting DMRS or idle). For example, 1 represents RE non-multiplexed data of CDM group 0,2 represents RE non-multiplexed data of CDM groups 0 and 1, and 3 represents non-multiplexed data of all CDM groups 0,1, and 2.
Alternatively, the DMRS type includes two mapping patterns of DMRS type1 (DMRS type 1) and DMRS type2 (DMRS type 2), REs for DMRS in DMRS type1 include CDM group 0 and CDM group 1, and REs for DMRS in DMRS type2 include CDM group 0, CDM group 1, and CDM group 2.
Optionally, the first signaling is radio resource control RRC signaling and/or downlink control information DCI signaling.
Step 102, determining a ratio of PDSCH power to DMRS power according to the first CDM group number, the DMRS type, and the first frequency division multiplexing parameter.
Wherein, the ratio of PDSCH power to DMRS power may be referred to as the ratio of PDSCH EPRE to DMRS EPRE, or。
The first device may determine the DMRS EPRE according to the determined ratio of PDSCH EPRE to DMRS EPRE and the network indication PDSCH EPRE, thereby ensuring that the first device demodulates the signal correctly.
In the embodiment of the application, the first device is a demodulation end device, for example, the first device is a terminal in the scene of the cooperative sensing of the base station and the terminal, for example, the first device is a base station in the scene of the cooperative sensing of the base station and the base station, and the method is not particularly limited.
In at least one embodiment of the present application, the first frequency division multiplexing parameter includes a CDM group number occupied by a sensing signal in REs for the DMRS.
Wherein, the CDM group number occupied by the sensing signal in RE for DMRS can be called Number of DMRS CDM group(s) for sensing.
As an alternative embodiment, the first frequency division multiplexing parameter includes:
a first indication field for indicating the number of CDM groups occupied by a sensing signal in an RE for DMRS;
Or alternatively
And the first equipment can determine the quantity of CDM groups occupied by the perception signals in the RE used for the DMRS according to the resource mapping information.
Optionally, the first signaling further comprises a DMRS type. For example, DMRS type 1, or DMRS type 2.
In other words, the embodiment of the present application indicates the frequency division multiplexing information of the communication resource and the sensing resource through RRC or DCI signaling, and is specifically used for indicating the situation of the CDM group of sensing and communication frequency division multiplexing.
In an alternative implementation manner, aiming at the scene of cooperative sensing between the base station and the terminal, indication information between the base station and the terminal is newly added, for example, a first indication field with 2 bits is added in DCI, which is used for indicating the multiplexing condition of sensing and communication frequency domain. Since the base station already knows the mapping position of the sensing signal, the first indication field may only carry the CDM group occupation number of the sensing signal. When the type of the DMRS is type 2 (i.e., the DMRS adopts a type 2 mapping manner), as shown in fig. 2, the first indication field is 01, which indicates that the sensing signal occupies a CDM group of 1 DMRS, and as shown in fig. 3, the first indication field is 10, which indicates that the sensing signal occupies a CDM group of 2 DMRS.
In another optional implementation manner, for the scene of cooperative sensing between the base stations, information such as the DMRS type and Number of DMRS CDM group(s) for sensing information between the base stations is added to indicate the multiplexing condition of sensing and communication frequency domains. The second indication field senses that the receiving end needs to determine the CDM group occupying number and the DMRS gruoup resource position information because of the mapping position of the receiving base station position sensing signal. Therefore, the second indication field needs to determine Number of DMRS CDM group(s) for transmitting and the resource mapping information of the perceived occupied CDM group, so as to facilitate the frequency division multiplexing of the communication user served by the receiving base station and the perceived service, and perform uplink power adjustment.
For example, the types of the interactive DMRS between the base stations are 3 in total, at least 2bit second indication fields are needed for representing the resource mapping information in the case of the type 1 of the DMRS, and 6 in total, at least 3bit second indication fields are needed for representing the resource mapping information in the case of the type 2 of the DMRS. The receiving end (i.e. the first device) determines Number of DMRS CDM group(s) for sending value according to the one-to-one correspondence between Number of DMRS CDM group(s) for sending and the CDM group occupied by sensing. For example, DMRS-type 1 map:
The second indication field is "00", corresponding to the perceived signal occupying CDM group 0, corresponding to Number of DMRS CDM group(s) for transmitting=1;
The second indication field is "01", corresponding to the perceived signal occupying CDM group 1, corresponding to Number of DMRS CDM group(s) for transmitting=1;
The second indication field is "10", corresponding to the perceived signal occupying CDM groups 0, 1, corresponding to Number of DMRS CDM group(s) for transmitting=2.
In the embodiment of the application, the protocol agrees with the mapping relation of the ratio of 2 sets PDSCH EPRE and the DMRS EPRE, the communication mode applies the existing mapping relation and is not described in detail herein, and the communication perceiving frequency division multiplexing mode applies the new mapping relation provided by the embodiment of the application. The following describes a new mapping relationship provided by the embodiment of the present application.
As an alternative embodiment, step 102 includes:
Determining a second CDM group number according to the first CDM group number and the CDM group number occupied by the sensing signal in the RE used for the DMRS, wherein the second CDM group number is the CDM group number which cannot be used for PDSCH data transmission and cannot be used for sensing signal transmission in the RE used for the DMRS;
Determining a ratio of PDSCH power to DMRS power according to the second CDM group number, the DMRS type, and the first mapping table;
The first mapping table comprises a mapping relation among the number of the second CDM groups, the DMRS type and the ratio of PDSCH power to DMRS power.
Alternatively, the second CDM group number may be referred to as Number of DMRS CDM group(s) without multiplexing. Number of DMRS CDM group(s) without multiplexing is defined as a DM-RS port number (without multiplexing including transmitting DMRS or idle or transmitting sense signal) indicating that PDSCH data transmission cannot be simultaneously used and other reference signals are not multiplexed in a common sense frequency division multiplexing system, so that the first device determines the ratio of PDSCH EPRE to DMRS EPRE.
For example, the first mapping table multiplexes the mapping tables of "Number of DMRS CDM group(s) without data" and "the ratio of PDSCH EPRE to DMRS EPRE" in the prior art, and modifies Number of DMRS CDM group(s) without data in the table to Number of DMRS CDM group(s) without multiplexing, as shown in table 1.
The mapping mode can multiplex a unified mapping table with the existing communication mode, and has simple mapping relation and lower complexity.
Meter 1,the ratio of PDSCH EPRE to DMRS EPRE
As an alternative embodiment, the determining the second CDM group number according to the first CDM group number and the CDM group number occupied by the perceived signal in the RE for DMRS includes:
Determining that the second CDM group number is equal to a difference between the first CDM group number and a CDMR group number occupied by a perceived signal in the RE for DMRS.
In other words, the embodiment of the present application further provides Number of DMRS CDM group without multiplexing calculation methods, so that the first device can look up table to determine the ratio of PDSCH EPRE to DMRS EPRE, wherein ,Number of DMRS CDM group(s) without multiplexing = Number of DMRS CDM group(s) without data - Number of DMRS CDM group(s) for sensing.
Example one, as shown in fig. 4:
1. RRC signaling determines the DMRS mapping type as type1 (type 1);
2. Look-up table determination Number of DMRS CDM group(s) withoutdata=2;
3. DCI signaling determines Number of DMRS CDM group(s) for sending value, number of DMRS CDM group(s) for sending= '01';
4. Number of DMRS CDM group(s) without multiplexing = Number of DMRS CDM group(s) without data - Number of DMRS CDM group(s) for sensing=1, Table 1, the ratio of PDSCH EPRE to DMRS epre=0, i.e. power boosting factor β=1.
As another alternative embodiment, step 102 includes:
determining a ratio of PDSCH power to DMRS power according to the first CDM group number, the CDM group number occupied by the perceived signal in the RE for DMRS, the DMRS type, and a second mapping table;
The second mapping table includes a mapping relationship among the first CDM group number, the CDM group number occupied by the sensing signal in the RE for DMRS, the DMRS type, and a ratio of the PDSCH power to the DMRS power.
Optionally, the second mapping table is a newly added mapping relation table, and is suitable for the communication mode and the communication perception frequency division multiplexing mode, and the second mapping table is shown in table 2.
Meter 2,the ratio of PDSCH EPRE to DMRS EPRE
Example two
1. RRC signaling determines the DMRS mapping type as type2 (type 2);
2. Look-up table determination Number of DMRS CDM group(s) withoutdata=3;
3. DCI signaling indication Number of DMRS CDM group(s) for sending= '01';
4. Number of DMRS CDM group(s) withoutdata=3, number of DMRS CDM group(s) for sensing=1, look up table 2, the ratio of PDSCH EPRE to DMRS epre= -3dB, i.e. power boosting factor β=2.
In summary, the embodiment of the application aims at a sensing and communication frequency division multiplexing scene, the first device determines the ratio of PDSCH power to DMRS power according to the frequency division multiplexing parameters of communication resources and sensing resources and the quantity of CDM groups which cannot be used for PDSCH data transmission in REs used for the DMRS, and establishes a mapping relation of the ratio of new indication PDSCH EPRE to DMRS EPRE, thereby effectively supporting the sensing and communication frequency division multiplexing scene in a sense-of-all integrated scene, reducing the influence of the sensing function on the communication performance in the existing communication system, and ensuring the accuracy of sensing performance and communication demodulation.
As shown in fig. 5, the embodiment of the present application further provides a first device, including a processor 500 and a transceiver 510, where the transceiver 510 receives and transmits data under the control of the processor 500, and the processor 500 is configured to perform the following operations:
Receiving a first signaling, wherein the first signaling comprises a first Code Division Multiplexing (CDM) group number, a digital-to-symbol (DMRS) type and a first frequency division multiplexing parameter, the first CDM group number is the CDM group number which cannot be used for PDSCH data transmission in a resource element RE of the DMRS, the DMRS type is used for indicating a DMRS signal port mapping type, and the first frequency division multiplexing parameter is a frequency division multiplexing parameter of a communication signal resource and a perception signal resource;
And determining the ratio of PDSCH power to DMRS power according to the first CDM group number, the DMRS type and the first frequency division multiplexing parameter.
As an alternative embodiment, the first frequency division multiplexing parameter includes:
a first indication field for indicating the number of CDM groups occupied by a sensing signal in an RE for DMRS;
Or alternatively
And the first equipment can determine the quantity of CDM groups occupied by the perception signals in the RE used for the DMRS according to the resource mapping information.
As an alternative embodiment, the processor is further configured to perform the following procedure:
Determining a second CDM group number according to the first CDM group number and the CDM group number occupied by the sensing signal in the RE used for the DMRS, wherein the second CDM group number is the CDM group number which cannot be used for PDSCH data transmission and cannot be used for sensing signal transmission in the RE used for the DMRS;
Determining a ratio of PDSCH power to DMRS power according to the second CDM group number, the DMRS type, and the first mapping table;
The first mapping table comprises a mapping relation among the number of the second CDM groups, the DMRS type and the ratio of PDSCH power to DMRS power.
As an alternative embodiment, the processor is further configured to perform the following procedure:
Determining that the second CDM group number is equal to a difference between the first CDM group number and a CDMR group number occupied by a perceived signal in the RE for DMRS.
As an alternative embodiment, the processor is further configured to perform the following procedure:
determining a ratio of PDSCH power to DMRS power according to the first CDM group number, the CDM group number occupied by the perceived signal in the RE for DMRS, the DMRS type, and a second mapping table;
The second mapping table includes a mapping relationship among the first CDM group number, the CDM group number occupied by the sensing signal in the RE for DMRS, the DMRS type, and a ratio of the PDSCH power to the DMRS power.
Aiming at a sensing and communication frequency division multiplexing scene, the first device determines the ratio of PDSCH power to DMRS power according to frequency division multiplexing parameters of communication resources and sensing resources and the quantity of CDM groups which cannot be used for PDSCH data transmission in REs used for the DMRS, and establishes a mapping relation of a new indication PDSCH EPRE to the ratio of the DMRS EPRE, thereby effectively supporting the sensing and communication frequency division multiplexing scene in a sense-through integrated scene, reducing the influence of sensing functions introduced in the existing communication system on communication performance, and ensuring the sensing performance and the accuracy of communication demodulation.
It should be noted that, the first device provided in the embodiment of the present application is a device capable of executing the above-mentioned method for determining the ratio of PDSCH power to DMRS power, and all embodiments of the above-mentioned method for determining the ratio of PDSCH power to DMRS power are applicable to the device, and achieve the same or similar beneficial effects, and are not repeated herein.
The embodiment of the application also provides a first device, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes each process in the embodiment of the method for determining the ratio of the PDSCH power to the DMRS power when executing the program, and can achieve the same technical effect, and the repetition is avoided, so that the description is omitted.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, realizes each process in the embodiment of the method for determining the ratio of PDSCH power to DMRS power, as described above, and can achieve the same technical effects, and in order to avoid repetition, the description is omitted here. The computer readable storage medium is, for example, a Read-Only Memory (ROM), a random access Memory (Random Access Memory RAM), a magnetic disk or an optical disk.
The embodiment of the application also provides a computer program product, which comprises computer instructions, wherein the computer instructions realize the processes of the embodiment of the method for determining the ratio of PDSCH power to DMRS power when being executed by a processor, and can achieve the same technical effects, and the repetition is avoided, so that the description is omitted.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, magnetic disk storage and optical storage, etc.) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.
These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the foregoing is directed to the preferred embodiments of the present application, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present application, and such modifications and adaptations are intended to be comprehended within the scope of the present application.
Claims (9)
1. A method for determining a ratio of PDSCH power to DMRS power of a demodulation reference signal, the method being performed by a first device, the method comprising:
Receiving a first signaling, wherein the first signaling comprises a first Code Division Multiplexing (CDM) group number, a DMRS type and a first frequency division multiplexing parameter, the first CDM group number is the CDM group number which cannot be used for PDSCH data transmission in a Resource Element (RE) used for the DMRS, the DMRS type is used for indicating a DMRS signal port mapping type, and the first frequency division multiplexing parameter is the frequency division multiplexing parameter of communication resources and perception resources;
determining a ratio of PDSCH power to DMRS power according to the first CDM group number, the DMRS type, and the first frequency division multiplexing parameter;
wherein the first frequency division multiplexing parameter includes:
a first indication field for indicating the number of CDM groups occupied by a sensing signal in an RE for DMRS;
Or alternatively
The first equipment can determine the quantity of CDM groups occupied by the perception signals in the RE used for the DMRS according to the resource mapping information;
Wherein determining the ratio of PDSCH power to DMRS power according to the first CDM group number, DMRS type, and the first frequency division multiplexing parameter includes:
Determining a second CDM group number according to the first CDM group number and the CDM group number occupied by the sensing signal in the RE used for the DMRS, wherein the second CDM group number is the CDM group number which cannot be used for PDSCH data transmission and cannot be used for sensing signal transmission in the RE used for the DMRS;
Determining a ratio of PDSCH power to DMRS power according to the second CDM group number, the DMRS type, and the first mapping table;
The first mapping table comprises a mapping relation among the number of the second CDM groups, the DMRS type and the ratio of PDSCH power to DMRS power.
2. The method of claim 1, wherein the determining the second CDM group number based on the first CDM group number and the CDM group number occupied by the perceived signal in the RE for DMRS comprises:
Determining that the second CDM group number is equal to a difference between the first CDM group number and a CDMR group number occupied by a perceived signal in the RE for DMRS.
3. A method for determining a ratio of PDSCH power to DMRS power of a demodulation reference signal, the method being performed by a first device, the method comprising:
Receiving a first signaling, wherein the first signaling comprises a first Code Division Multiplexing (CDM) group number, a DMRS type and a first frequency division multiplexing parameter, the first CDM group number is the CDM group number which cannot be used for PDSCH data transmission in a Resource Element (RE) used for the DMRS, the DMRS type is used for indicating a DMRS signal port mapping type, and the first frequency division multiplexing parameter is the frequency division multiplexing parameter of communication resources and perception resources;
determining a ratio of PDSCH power to DMRS power according to the first CDM group number, the DMRS type, and the first frequency division multiplexing parameter;
wherein the first frequency division multiplexing parameter includes:
a first indication field for indicating the number of CDM groups occupied by a sensing signal in an RE for DMRS;
Or alternatively
The first equipment can determine the quantity of CDM groups occupied by the perception signals in the RE used for the DMRS according to the resource mapping information;
Wherein determining the ratio of PDSCH power to DMRS power according to the first CDM group number, DMRS type, and the first frequency division multiplexing parameter includes:
determining a ratio of PDSCH power to DMRS power according to the first CDM group number, the CDM group number occupied by the perceived signal in the RE for DMRS, the DMRS type, and a second mapping table;
The second mapping table includes a mapping relationship among the first CDM group number, the CDM group number occupied by the sensing signal in the RE for DMRS, the DMRS type, and a ratio of the PDSCH power to the DMRS power.
4. A first device comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, the processor being configured to:
Receiving a first signaling, wherein the first signaling comprises a first Code Division Multiplexing (CDM) group number, a DMRS type and a first frequency division multiplexing parameter, the first CDM group number is the CDM group number which cannot be used for PDSCH data transmission in resource element RE of the DMRS, the DMRS type is used for indicating the DMRS signal port mapping type, and the first frequency division multiplexing parameter is the frequency division multiplexing parameter of communication resources and perception resources;
determining a ratio of PDSCH power to DMRS power according to the first CDM group number, the DMRS type, and the first frequency division multiplexing parameter;
wherein the first frequency division multiplexing parameter includes:
a first indication field for indicating the number of CDM groups occupied by a sensing signal in an RE for DMRS;
Or alternatively
The first equipment can determine the quantity of CDM groups occupied by the perception signals in the RE used for the DMRS according to the resource mapping information;
Wherein the processor is further configured to perform the following:
Determining a second CDM group number according to the first CDM group number and the CDM group number occupied by the sensing signal in the RE used for the DMRS, wherein the second CDM group number is the CDM group number which cannot be used for PDSCH data transmission and cannot be used for sensing signal transmission in the RE used for the DMRS;
Determining a ratio of PDSCH power to DMRS power according to the second CDM group number, the DMRS type, and the first mapping table;
The first mapping table comprises a mapping relation among the number of the second CDM groups, the DMRS type and the ratio of PDSCH power to DMRS power.
5. The apparatus of claim 4, wherein the processor is further configured to perform the following:
Determining that the second CDM group number is equal to a difference between the first CDM group number and a CDMR group number occupied by a perceived signal in the RE for DMRS.
6. A first device comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, the processor being configured to:
Receiving a first signaling, wherein the first signaling comprises a first Code Division Multiplexing (CDM) group number, a DMRS type and a first frequency division multiplexing parameter, the first CDM group number is the CDM group number which cannot be used for PDSCH data transmission in resource element RE of the DMRS, the DMRS type is used for indicating the DMRS signal port mapping type, and the first frequency division multiplexing parameter is the frequency division multiplexing parameter of communication resources and perception resources;
determining a ratio of PDSCH power to DMRS power according to the first CDM group number, the DMRS type, and the first frequency division multiplexing parameter;
wherein the first frequency division multiplexing parameter includes:
a first indication field for indicating the number of CDM groups occupied by a sensing signal in an RE for DMRS;
Or alternatively
The first equipment can determine the quantity of CDM groups occupied by the perception signals in the RE used for the DMRS according to the resource mapping information;
Wherein the processor is further configured to perform the following:
determining a ratio of PDSCH power to DMRS power according to the first CDM group number, the CDM group number occupied by the perceived signal in the RE for DMRS, the DMRS type, and a second mapping table;
The second mapping table includes a mapping relationship among the first CDM group number, the CDM group number occupied by the sensing signal in the RE for DMRS, the DMRS type, and a ratio of the PDSCH power to the DMRS power.
7. A first device comprising a memory, a processor and a program stored in the memory and executable on the processor, wherein the processor implements the method for determining the ratio of the PDSCH power of the physical downlink shared channel to the DMRS power of the demodulation reference signal according to claim 1 or 2 when executing the program, or the processor implements the method for determining the ratio of the PDSCH power of the physical downlink shared channel to the DMRS power of the demodulation reference signal according to claim 3 when executing the program.
8. A computer readable storage medium having stored thereon a computer program, wherein the program when executed by a processor performs the steps in the method for determining the ratio of the PDSCH power of the physical downlink shared channel to the DMRS power of the demodulation reference signal according to claim 1 or 2, or wherein the program when executed by a processor performs the steps in the method for determining the ratio of the PDSCH power of the physical downlink shared channel to the DMRS power of the demodulation reference signal according to claim 3.
9. A computer program product comprising computer instructions which, when executed by a processor, implement the steps of the method for determining the ratio of the PDSCH power of a physical downlink shared channel to the DMRS power of a demodulation reference signal according to claim 1 or 2, or which, when executed by a processor, implement the steps of the method for determining the ratio of the PDSCH power of a physical downlink shared channel to the DMRS power of a demodulation reference signal according to claim 3.
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| CN112449413A (en) * | 2019-08-29 | 2021-03-05 | 中国移动通信有限公司研究院 | Power indication method, determination method, device, network side equipment and terminal |
| CN116709366A (en) * | 2022-02-28 | 2023-09-05 | 华为技术有限公司 | Communication method and communication device |
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| CN117792588A (en) * | 2022-09-20 | 2024-03-29 | 华为技术有限公司 | Method and communication device for transmitting and receiving reference signals |
| CN118283682A (en) * | 2022-12-30 | 2024-07-02 | 华为技术有限公司 | Measurement method, device and system |
| CN118804313A (en) * | 2023-04-14 | 2024-10-18 | 华为技术有限公司 | Port indication method, device and system |
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| CN112449413A (en) * | 2019-08-29 | 2021-03-05 | 中国移动通信有限公司研究院 | Power indication method, determination method, device, network side equipment and terminal |
| CN116709366A (en) * | 2022-02-28 | 2023-09-05 | 华为技术有限公司 | Communication method and communication device |
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