CN111385864B - Method, equipment and system for adjusting power - Google Patents

Method, equipment and system for adjusting power Download PDF

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CN111385864B
CN111385864B CN201811644885.3A CN201811644885A CN111385864B CN 111385864 B CN111385864 B CN 111385864B CN 201811644885 A CN201811644885 A CN 201811644885A CN 111385864 B CN111385864 B CN 111385864B
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csi
power adjustment
information
adjustment information
configuration bandwidth
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CN111385864A (en
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尹海帆
刘永
金黄平
毕晓艳
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application provides a method, equipment and a system for adjusting power, which comprises the following steps: the method comprises the steps that network equipment configures channel state information reference signal CSI-RS configuration bandwidth for terminal equipment, and determines power adjustment information of each of a plurality of frequency bands on the CSI-RS configuration bandwidth. For any frequency band in the multiple frequency bands, the power adjustment information includes the multiplexing times N of the frequency band or a parameter value determined according to the multiplexing times N, where N is a positive integer. And the network equipment sends indication information for indicating the power adjustment information of each of the multiple frequency bands on the CSI-RS configuration bandwidth to the terminal equipment. And after receiving the indication information from the network equipment, the terminal equipment adjusts the CSI-RS channel estimation of the frequency band corresponding to each terminal equipment according to the power adjustment information. One P is shared relative to the whole CSI-RS configuration bandwidth in the prior artcThe scheme for adjusting the CSI-RS channel estimation result can improve the accuracy of channel estimation when the CSI-RS is multiplexed.

Description

Method, equipment and system for adjusting power
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method, a device, and a system for power adjustment.
Background
A fifth generation (5th-generation, abbreviated as 5G) (which may also be referred to as New Radio (NR)) communication system is currently under study. The 5G communication system has higher requirements on system capacity, spectrum efficiency and the like.
In a mobile communication system, Channel State Information (CSI) fed back by a terminal device to a base station has a great influence on the performance of the communication system, and therefore, accurate channel estimation (i.e., measurement of CSI of a downlink channel) is an important factor affecting the performance of the system. Currently, a terminal device needs to rely on a CSI-Reference Signal (RS) transmitted by a base station for channel estimation. In order to obtain better configuration flexibility, the power of the CSI-RS is not necessarily consistent with the power of a Physical Downlink Shared Channel (PDSCH), which requires the base station to indicate the power of the CSI-RS, thereby obtaining more accurate channel estimation.
Furthermore, in a large-scale (mass) multiple-input multiple-output (MIMO) system, when the angles of different terminal devices on the base station side do not overlap, even if CSI-RSs of multiple users are completely multiplexed, i.e. share the same time, frequency and code resources, the interference between the pilots of different users tends to zero [1] [2] as the number of antennas of the base station increases. Therefore, in a massive MIMO system, CSI-RS resources can be saved through multiplexing of CSI-RS in some scenarios, or a base station can acquire channel information of more users at the same time.
However, after introducing the CSI-RS multiplexing, the power of the CSI-RS also changes accordingly. Specifically, due to the limitation of the base station power, when one CSI-RS is allocated to a plurality of terminal devices, the CSI-RS signal power received by each terminal device becomes small. The base station is then required to inform the terminal device to perform power compensation for the corresponding channel estimation. The existing CSI-RS power compensation indication is P in NR 38.331 through Radio Resource Control (RRC) signalingcConfigured to be implemented, PcRepresents a ratio of power of a PDSCH Resource Element (RE) indicated by the base station to CSI-RS RE power.
However, P in existing RRC signaling for the entire CSI-RScThe value is fixed, i.e. the whole CSI-RS configuration bandwidth shares one PcAnd adjusting the CSI-RS channel estimation result. However, as shown in fig. 1a, the bandwidths of CSI-RS configurations of different terminal devices may overlap, and P using the existing configurationcAnd performing power adjustment on the CSI-RS configuration bandwidth, wherein the CSI-RS configuration bandwidth has deviation on channel estimation.
Therefore, how to adjust the power to improve the accuracy of channel estimation when the CSI-RS is multiplexed is an urgent problem to be solved at present.
Disclosure of Invention
The embodiment of the application provides a method, equipment and a system for power adjustment, which can improve the accuracy of channel estimation when CSI-RS is multiplexed.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:
in a first aspect, a method of power adjustment and a corresponding communication device are provided. In the scheme, the terminal equipment receives indication information from the network equipment; the indication information is used for indicating power adjustment information of each of a plurality of frequency bands on a channel state information reference signal (CSI-RS) configuration bandwidth; and the terminal equipment adjusts the CSI-RS channel estimation of the frequency band corresponding to each terminal equipment according to the plurality of pieces of power adjustment information. Based on the scheme, the indication information sent by the network equipment to the terminal equipment can indicate the power adjustment information of each of the multiple frequency bands on the CSI-RS configuration bandwidth, so that the terminal equipment can adjust the CSI-RS channel estimation of each corresponding frequency band according to the multiple power adjustment information, and therefore, compared with the prior art, the whole CSI-RS configuration bandwidth shares one PcThe scheme for adjusting the CSI-RS channel estimation result can improve the accuracy of channel estimation when the CSI-RS is multiplexed.
In one possible design, the terminal device receives indication information from the network device, including: the terminal equipment receives Radio Resource Control (RRC) signaling from the network equipment, wherein the RRC signaling comprises the indication information; or, the terminal device receives a media access control unit MAC-CE signaling from the network device, where the MAC-CE signaling includes the indication information; or, the terminal device receives a downlink control information DCI signaling from the network device, where the DCI signaling includes the indication information.
In one possible design, the power adjustment information of each of the multiple frequency bands includes a multiplexing number N of the frequency band or a parameter value determined according to the multiplexing number N, where N is a positive integer.
In one possible design, the adjusting, by the terminal device, CSI-RS channel estimates of respective corresponding frequency bands according to the multiple pieces of power adjustment information includes: for any frequency band in the plurality of frequency bands, the terminal device according to the multiplexing times N and the following first formulaAnd adjusting the CSI-RS channel estimation of the frequency band:
Figure BDA0001931862630000021
alternatively, the first and second electrodes may be,
Figure BDA0001931862630000022
wherein the content of the first and second substances,
Figure BDA0001931862630000023
denotes the adjusted channel estimation, H denotes the channel estimation before adjustment, N denotes the number of multiplexing of the band, P denotes the number of multiplexing of the bandcAnd the ratio of the power of the physical downlink shared channel PDSCH resource unit RE indicated by the network equipment to the power of the CSI-RS RE is represented.
Or, in a possible design, the adjusting, by the terminal device, CSI-RS channel estimates of respective corresponding frequency bands according to the multiple pieces of power adjustment information includes: for any frequency band in the multiple frequency bands, the terminal device adjusts the CSI-RS channel estimation of the frequency band according to a parameter value determined by the number of multiplexing N and a second formula as follows:
Figure BDA0001931862630000024
wherein the content of the first and second substances,
Figure BDA0001931862630000025
indicating the adjusted channel estimation, H indicating the channel estimation before the adjustment, r indicating the parameter value determined by the network device according to the multiplexing number N of the frequency band, r ═ f (N), g (r, Pc) indicating the terminal device according to the parameter values r and PcThe determined power adjustment value, N represents the multiplexing times of the frequency band, PcRepresents a ratio of the power of the PDSCH REs indicated by the network device to the CSI-RS RE power.
In a second aspect, a method of power adjustment and a corresponding communication device are provided. In the scheme, network equipment configures a channel state information reference signal (CSI-RS) configuration bandwidth for terminal equipment, and determines power adjustment information of each of a plurality of frequency bands on the CSI-RS configuration bandwidth; the network device sends instruction information to the terminal device, the instruction information is usedAnd indicating power adjustment information of each of a plurality of frequency bands on the CSI-RS configuration bandwidth. Based on the scheme, the indication information sent by the network equipment to the terminal equipment can indicate the power adjustment information of each of the multiple frequency bands on the CSI-RS configuration bandwidth, so that the terminal equipment can adjust the CSI-RS channel estimation of each corresponding frequency band according to the multiple power adjustment information, and therefore, compared with the prior art, the whole CSI-RS configuration bandwidth shares one PcThe scheme for adjusting the CSI-RS channel estimation result can improve the accuracy of channel estimation when the CSI-RS is multiplexed.
In one possible design, the power adjustment information of each of the multiple frequency bands includes a multiplexing number N of the frequency band or a parameter value determined according to the multiplexing number N, where N is a positive integer.
In one possible design, the network device sends the indication information to the terminal device, where the indication information includes: the network equipment sends a Radio Resource Control (RRC) signaling to the terminal equipment, wherein the RRC signaling comprises the indication information; or, the network device sends a media access control unit (MAC-CE) signaling to the terminal device, wherein the MAC-CE signaling comprises the indication information; or, the network device sends a downlink control information DCI signaling to the terminal device, where the DCI signaling includes the indication information.
In combination with the first aspect or the second aspect, in one possible design, at least two of the plurality of power adjustment information are different.
For example, the power adjustment information of the frequency band overlapping with the CSI-RS configuration bandwidth configured by the network device for the other terminal is different from the power adjustment information of the frequency band not overlapping.
Or, further, in a frequency band overlapping with a CSI-RS configuration bandwidth configured by the network device for other terminals, the power adjustment information of two different frequency bands is different.
With reference to the first aspect or the second aspect, in a possible design, a part of or all of the multiple frequency bands overlap with a CSI-RS configuration bandwidth configured by the network device for other terminal devices. That is, the overlapped frequency band may be a partial frequency band or a whole frequency band in a plurality of frequency bands on the CSI-RS configuration bandwidth configured for the terminal device by the network device, in other words, the CSI-RS configuration bandwidth configured for the terminal device by the network device may be partially overlapped or completely overlapped with the CSI-RS configuration bandwidth configured for other terminal devices by the network device.
In combination with the first aspect or the second aspect, in one possible design, the plurality of pieces of power adjustment information are the same. For example, when the CSI-RS configuration bandwidth configured by the network device for the terminal device is completely overlapped with the CSI-RS configuration bandwidth configured by the network device for other terminal devices, the power adjustment information of all the frequency bands in the CSI-RS configuration bandwidth configured by the network device for the terminal device is the same.
With reference to the first aspect or the second aspect, in a possible design, all of the multiple frequency bands overlap with a CSI-RS configuration bandwidth configured by the network device for other terminal devices.
In combination with the first aspect or the second aspect, in one possible design, the same plurality of power adjustment information is different from the initial power adjustment information. That is, considering that the initial power adjustment information is power adjustment information required when CSI-RS channel estimation of a CSI-RS configuration bandwidth is adjusted, and generally corresponds to a scenario in which the multiplexing number N is 1 (i.e., no overlapping), in the embodiment of the present application, all frequency bands in the multiple frequency bands overlap with the CSI-RS configuration bandwidth configured by the network device for other terminal devices, that is, correspond to a scenario in which the multiplexing number N is greater than 1, and therefore the same multiple power adjustment information is different from the initial power adjustment information.
With reference to the first aspect or the second aspect, in one possible design, the indication information includes location information of the multiple frequency bands and power adjustment information of each of the multiple frequency bands.
With reference to the first aspect or the second aspect, in a possible design, the position information of the multiple frequency bands includes at least two of start frequency domain position information, end frequency domain position information, or size of each of the multiple frequency bands.
With reference to the first aspect or the second aspect, in a possible design, the indication information includes power adjustment information corresponding to each of the multiple frequency bands, and multiple first bit maps, where each bit in each first bit map is used to indicate whether there is corresponding power adjustment information in each frequency domain resource unit on the CSI-RS configuration bandwidth.
In a third aspect, a method of power adjustment and a corresponding communication device are provided. In the scheme, the terminal equipment receives indication information from the network equipment; the indication information is used for indicating power adjustment information corresponding to a channel state information reference signal CSI-RS configuration bandwidth; the power adjustment information comprises multiplexing times N of the CSI-RS configuration bandwidth or parameter values determined according to the multiplexing times N, wherein N is a positive integer; and the terminal equipment adjusts the CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information. Based on the scheme, since the indication information sent by the network device to the terminal device may indicate power adjustment information corresponding to the CSI-RS configuration bandwidth, where the power adjustment information includes the multiplexing number N of the CSI-RS configuration bandwidth or a parameter value determined by the network device according to the multiplexing number N, where N is a positive integer, the terminal device may adjust CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information, and therefore, the whole CSI-RS configuration bandwidth shares one P in common compared with the prior artcThe scheme for adjusting the CSI-RS channel estimation result can improve the accuracy of channel estimation when the CSI-RS is multiplexed.
In one possible design, the CSI-RS configuration bandwidth and the CSI-RS configuration bandwidth configured by the network device for other terminals all overlap.
In one possible design, the terminal device receives indication information from the network device, including: the terminal equipment receives Radio Resource Control (RRC) signaling from the network equipment, wherein the RRC signaling comprises the indication information; or the terminal equipment receives a media access control unit (MAC-CE) signaling from the network equipment, wherein the MAC-CE signaling comprises the indication information; or, the terminal device receives a downlink control information DCI signaling from the network device, where the DCI signaling includes the indication information.
In one possible design, the adjusting, by the terminal device, the CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information includes: the terminal equipment adjusts the CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the multiplexing times N of the CSI-RS configuration bandwidth and a first formula as follows:
Figure BDA0001931862630000041
alternatively, the first and second electrodes may be,
Figure BDA0001931862630000042
wherein the content of the first and second substances,
Figure BDA0001931862630000043
indicating the adjusted channel estimation, H indicating the channel estimation before the adjustment, N indicating the multiplexing times of the CSI-RS configuration bandwidth, PcAnd the ratio of the power of the physical downlink shared channel PDSCH resource unit RE indicated by the network equipment to the power of the CSI-RS RE is represented.
Or, in a possible design, the adjusting, by the terminal device, the CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information includes: the terminal equipment adjusts the CSI-RS channel estimation of the CSI-RS configuration bandwidth according to a parameter value determined by the multiplexing times N of the CSI-RS configuration bandwidth and a second formula as follows:
Figure BDA0001931862630000044
wherein the content of the first and second substances,
Figure BDA0001931862630000045
indicating the adjusted channel estimation, H indicating the channel estimation before the adjustment, r indicating the parameter value determined by the network device according to the multiplexing number N of the CSI-RS configuration bandwidth, r ═ f (N), g (r, Pc) indicating the terminal device according to the parameter values r and PcThe determined power adjustment value N represents the multiplexing times of the CSI-RS configuration bandwidth, PcRepresents a ratio of the power of the PDSCH REs indicated by the network device to the CSI-RS RE power.
In a fourth aspect, provideA method of power adjustment and a corresponding communication device are provided. In the scheme, network equipment configures a channel state information reference signal (CSI-RS) configuration bandwidth for terminal equipment, and determines power adjustment information corresponding to the CSI-RS configuration bandwidth; the power adjustment information comprises multiplexing times N of the CSI-RS configuration bandwidth or parameter values determined according to the multiplexing times N, wherein N is a positive integer; and the network equipment sends indication information to the terminal equipment, wherein the indication information is used for indicating the power adjustment information corresponding to the CSI-RS configuration bandwidth. Based on the scheme, since the indication information sent by the network device to the terminal device may indicate power adjustment information corresponding to the CSI-RS configuration bandwidth, where the power adjustment information includes the multiplexing number N of the CSI-RS configuration bandwidth or a parameter value determined by the network device according to the multiplexing number N, where N is a positive integer, the terminal device may adjust CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information, and therefore, the terminal device shares one P for the entire CSI-RS configuration bandwidth in the prior artcThe scheme for adjusting the CSI-RS channel estimation result can improve the accuracy of channel estimation when the CSI-RS is multiplexed.
In one possible design, the power adjustment information corresponding to the CSI-RS configuration bandwidth includes the multiplexing number N of the CSI-RS configuration bandwidth or a parameter value determined according to the multiplexing number N of the CSI-RS configuration bandwidth, where N is a positive integer.
In one possible design, the CSI-RS configuration bandwidth and the CSI-RS configuration bandwidth configured by the network device for other terminals all overlap.
In one possible design, the network device sends the indication information to the terminal device, where the indication information includes: the network equipment sends a Radio Resource Control (RRC) signaling to the terminal equipment, wherein the RRC signaling comprises the indication information; or, the network device sends a media access control unit (MAC-CE) signaling to the terminal device, wherein the MAC-CE signaling comprises the indication information; or, the network device sends a downlink control information DCI signaling to the terminal device, where the DCI signaling includes the indication information.
In a fifth aspect, a communications apparatus is provided for implementing the various methods described above. The communication device may be the terminal device of the first aspect or the third aspect, or a device including the terminal device; alternatively, the communication device may be the network device in the second aspect or the fourth aspect, or a device including the network device. The communication device includes corresponding modules, units, or means (means) for implementing the above methods, and the modules, units, or means may be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.
In a sixth aspect, a communication apparatus is provided, including: a processor and a memory; the memory is configured to store computer instructions that, when executed by the processor, cause the communication device to perform the method of any of the above aspects. The communication device may be the terminal device of the first aspect or the third aspect, or a device including the terminal device; alternatively, the communication device may be the network device in the second aspect or the fourth aspect, or a device including the network device.
In a seventh aspect, a communication apparatus is provided, including: a processor; the processor is configured to be coupled to the memory, and after reading the instructions in the memory, perform the method according to any one of the above aspects. The communication device may be the terminal device of the first aspect or the third aspect, or a device including the terminal device; alternatively, the communication device may be the network device in the second aspect or the fourth aspect, or a device including the network device.
In an eighth aspect, a computer-readable storage medium is provided, having stored therein instructions, which when run on a computer, cause the computer to perform the method of any of the above aspects.
In a ninth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the above aspects.
In a tenth aspect, there is provided a communication device (which may be a chip or a system of chips, for example) comprising a processor for implementing the functionality referred to in any of the above aspects. In one possible design, the communication device further includes a memory for storing necessary program instructions and data. When the communication device is a chip system, the communication device may be constituted by a chip, or may include a chip and other discrete devices.
For technical effects brought by any one of the design manners in the fifth aspect to the tenth aspect, reference may be made to technical effects brought by different design manners in the first aspect, the second aspect, the third aspect, or the fourth aspect, and details are not repeated herein.
In an eleventh aspect, a communication system is provided, which comprises the terminal device of the above aspect and the access network device of the above aspect.
Drawings
Fig. 1a is a first schematic diagram illustrating bandwidth overlapping of different CSI-RS configurations according to an embodiment of the present disclosure;
fig. 1b is a schematic diagram of different CSI-RS configuration bandwidth overlaps according to an embodiment of the present application;
fig. 1c is a schematic diagram three of different CSI-RS configuration bandwidth overlaps provided in the embodiment of the present application;
fig. 1d is a schematic diagram of a fourth example of overlapping bandwidths of different CSI-RS configurations according to the embodiment of the present application;
fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a terminal device and a network device provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a network device according to an embodiment of the present application;
fig. 5 is a first flowchart illustrating a method for power adjustment according to an embodiment of the present disclosure;
fig. 6 is a fifth schematic diagram illustrating overlapping of bandwidths of different CSI-RS configurations according to an embodiment of the present application;
fig. 7 is a sixth schematic diagram illustrating bandwidth overlapping of different CSI-RS configurations according to an embodiment of the present application;
fig. 8 is a seventh schematic diagram illustrating overlapping bandwidths of different CSI-RS configurations according to an embodiment of the present application;
fig. 9 is an eighth schematic diagram illustrating bandwidth overlapping of different CSI-RS configurations according to an embodiment of the present application;
fig. 10 is a diagram nine illustrating bandwidth overlapping of different CSI-RS configurations according to an embodiment of the present application;
fig. 11 is a schematic diagram ten of bandwidth overlapping of different CSI-RS configurations provided in the embodiment of the present application;
fig. 12 is an eleventh schematic diagram illustrating bandwidth overlapping of different CSI-RS configurations according to an embodiment of the present application;
fig. 13 is a twelfth schematic diagram illustrating overlapping bandwidths of different CSI-RS configurations according to an embodiment of the present application;
fig. 14 is a schematic diagram illustrating different frequency division modes of a CSI-RS configuration bandwidth 1 according to an embodiment of the present application;
fig. 15 is a schematic flow chart of a power adjustment method according to an embodiment of the present application;
fig. 16 is a thirteenth schematic diagram illustrating bandwidth overlapping of different CSI-RS configurations according to an embodiment of the present application;
fig. 17 is a fourteenth schematic diagram illustrating bandwidth overlapping of different CSI-RS configurations according to an embodiment of the present application;
fig. 18 is a schematic structural diagram of another terminal device according to an embodiment of the present application;
fig. 19 is a schematic structural diagram of another network device according to an embodiment of the present application.
Detailed Description
To facilitate understanding of the schemes in the embodiments of the present application, a brief introduction or definition of the related art is first given as follows:
first, initial power adjustment information
The initial power adjustment information in the embodiment of the present application refers to power adjustment information that is required when the network device indicates to the terminal device to adjust CSI-RS channel estimation of a CSI-RS configuration bandwidth. The initial power adjustment information may be, for example, P carried in the existing RRC signalingcValue, PcRepresenting ratio of PDSCH RE power indicated by network equipment to CSI-RS RE power. Alternatively, the initial power adjustment information may be P carried in the existing RRC signalingcThe value of the value is a certain value having a mapping relationship, for example, the multiplexing number N of the CSI-RS configuration bandwidth is 1. Alternatively, the initial power adjustment information may also be, for example, a parameter value r determined according to the multiplexing number N-1 of the CSI-RS configuration bandwidth, for example, r may be an adjustment value of a logarithmic scale, such as r-10 lgN-0 or r-10 lgN-0; alternatively, r may be a linear scale adjustment value, such as r-N-1 or r-1/N-1; alternatively, r can be a linear scale amplitude adjustment value, such as
Figure BDA0001931862630000061
Or
Figure BDA0001931862630000062
Alternatively, r may be the amount of displacement of power, e.g., r ═ log2N-0 or r-log2N is 0; alternatively, r can be the amount of displacement of the amplitude, e.g.
Figure BDA0001931862630000063
Or
Figure BDA0001931862630000064
Etc.; alternatively, the initial power adjustment information may be, for example, the number of multiplexing times N-1 and P according to the CSI-RS configuration bandwidthcDetermined parameter value r, e.g. r 10lgN + Pc＝PcThe embodiment of the present application does not specifically limit the specific expression of the initial power adjustment information.
In addition, it should be noted that, in the embodiment of the present application, there may be other descriptions of the initial power adjustment information, such as the original power adjustment information or the reference power adjustment information, and this is not specifically limited in the embodiment of the present application.
Second, CSI-RS configuration bandwidth
The CSI-RS configuration bandwidth in the embodiment of the application is configured for the terminal equipment by the network equipment. The network device may configure the CSI-RS configuration bandwidth for the plurality of terminal devices through resource setup (resource setings) signaling. Specifically, the resource configuration (resource setup) signaling includes one or more channel state information resource sets (CSI-RS resource sets), each CSI-RS resource set includes one or more CSI-RS resources, and each CSI-RS resource corresponds to one CSI-RS configuration bandwidth. After the terminal device receives the resource setting (resource setup) signaling, one or more CSI-RS resource sets may be selected, and then for each CSI-RS resource set, one or more CSI-RS resources in the CSI-RS resource sets are selected, and finally, the one or more CSI-RS resources determined by the terminal device correspond to one or more CSI-RS configuration bandwidths configured by the network device for the terminal device. Each CSI-RS configuration bandwidth corresponds to one frequency band or is defined as a plurality of frequency bands, and the power adjustment information corresponding to different frequency bands may be the same or different.
In the embodiment of the application, according to the overlapping condition of the CSI-RS configuration bandwidths corresponding to the CSI-RS resources configured for different terminal devices by the network device, the CSI-RS configuration bandwidth can be defined as a plurality of frequency bands according to a preset rule (such as repeated times). For convenience of description, the following is referred to as dividing into multiple frequency bands, which is described herein in a unified manner and will not be described further below.
In a possible implementation manner, a network device configures one CSI-RS resource for one terminal device, where the CSI-RS resource corresponds to one CSI-RS configuration bandwidth, and the CSI-RS configuration bandwidth includes multiple frequency bands. For example, as shown in fig. 1b, the network device configures a CSI-RS resource1 for the terminal device 1, where the CSI-RS resource1 corresponds to a CSI-RS configuration bandwidth 1, and the CSI-RS configuration bandwidth 1 may be divided into frequency bands such as a frequency band 1, a frequency band 2, and a frequency band … ….
Or, in another possible implementation manner, the network device configures a plurality of CSI-RS resources for one terminal device, where each CSI-RS resource corresponds to one CSI-RS configuration bandwidth, and each CSI-RS configuration bandwidth includes one frequency band. For example, as shown in fig. 1c, the network device configures CSI-RS resource1 and CSI-RS resource2 for the terminal device 1, where the CSI-RS resource1 corresponds to a CSI-RS configuration bandwidth 1, and the CSI-RS configuration bandwidth 1 may correspond to a frequency band 1; the CSI-RS resource2 corresponds to a CSI-RS configuration bandwidth 2, and the CSI-RS configuration bandwidth 2 may correspond to a frequency band 2.
Or, in another possible implementation manner, the network device configures a plurality of CSI-RS resources for one terminal device, where each CSI-RS resource corresponds to one CSI-RS configuration bandwidth, and each CSI-RS configuration bandwidth includes one or more frequency bands. For example, as shown in fig. 1d, the network device configures CSI-RS resource1 and CSI-RS resource2 for the terminal device 1, where the CSI-RS resource1 corresponds to a CSI-RS configuration bandwidth 1, and the CSI-RS configuration bandwidth 1 may be divided into frequency bands 1, 2, … …, and the like; the CSI-RS resource2 corresponds to a CSI-RS configuration bandwidth 2, and the CSI-RS configuration bandwidth 2 corresponds to a frequency band s.
Of course, the network device may also configure one CSI-RS resource for one terminal device, where the CSI-RS resource corresponds to one CSI-RS configuration bandwidth, and the CSI-RS configuration bandwidth corresponds to one frequency band, which is similar to the prior art and is not described herein again.
It should be noted that, in the embodiment of the present application, one or more CSI-RS resources configured by a network device for a terminal device may belong to the same CSI-RS resource set, or may belong to different CSI-RS resource sets, which is not specifically limited in the embodiment of the present application.
It should be noted that, in this embodiment of the present application, a plurality of configuration bandwidths corresponding to a plurality of CSI-RS resources configured by a network device for a terminal device may be formed by continuous frequency bands or may be formed by discontinuous frequency bands, which is not specifically limited in this embodiment of the present application.
Third, the size of the frequency band (size)
In the embodiment of the present application, the size of the frequency band may also be referred to as a length or a width of the frequency band, which may have a plurality of representation forms. For example, the size of the frequency band may be represented by the number of Resource Elements (REs) included in the frequency band; or, the size of the frequency band may be represented by the number of Subbands (SB) included in the frequency band; or, the size of the frequency band may be represented by the number of Resource Blocks (RBs) included in the frequency band; or, the size of the frequency band may be represented by the number of subcarriers included in the frequency band, and the like.
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Where in the description of the present application, "/" indicates a relationship where the objects associated before and after are an "or", unless otherwise stated, for example, a/B may indicate a or B; in the present application, "and/or" is only an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. Also, in the description of the present application, "a plurality" means two or more than two unless otherwise specified. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple. In addition, in order to facilitate clear description of technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items having substantially the same functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.
The technical scheme of the embodiment of the application can be applied to various communication systems. For example: orthogonal Frequency Division Multiple Access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and other systems. The term "system" may be used interchangeably with "network". The OFDMA system may implement wireless technologies such as evolved universal radio access (E-UTRA), Ultra Mobile Broadband (UMB), and the like. E-UTRA is an evolved version of the Universal Mobile Telecommunications System (UMTS). The third generation partnership project (3rd generation partnership project, 3GPP) uses a new version of E-UTRA in Long Term Evolution (LTE) and various versions based on LTE evolution. The 5G communication system is a next-generation communication system under study. The 5G communication system includes a non-independent Network (NSA) 5G mobile communication system, an independent network (SA) 5G mobile communication system, or an NSA 5G mobile communication system and an SA 5G mobile communication system. In addition, the communication system can also be applied to future-oriented communication technologies, and the technical solutions provided by the embodiments of the present application are all applied. The above-mentioned communication system applicable to the present application is only an example, and the communication system applicable to the present application is not limited thereto, and is herein collectively described, and will not be described again.
Fig. 2 shows a communication system 20 according to an embodiment of the present application. The communication system 20 includes a network device 30 and one or more terminal devices 40 connected to the network device 30. Alternatively, different terminal devices 40 may communicate with each other.
Taking an example of interaction between the network device 30 shown in fig. 2 and any terminal device 40, in this embodiment, in a possible implementation manner, after determining power adjustment information of each of a plurality of frequency bands on a CSI-RS configuration bandwidth, the network device sends indication information to the terminal device, where the indication information is used to indicate the power adjustment information of each of the plurality of frequency bands on the CSI-RS configuration bandwidth. And the terminal equipment receives the indication information from the network equipment and adjusts the CSI-RS channel estimation of the frequency band corresponding to each terminal equipment according to the power adjustment information. The specific implementation of the scheme will be described in detail in the following method embodiments, and will not be described herein again. Based on the scheme, the indication information sent by the network equipment to the terminal equipment can indicate the power adjustment information of each of the multiple frequency bands on the CSI-RS configuration bandwidth, so that the terminal equipment can adjust the CSI-RS channel estimation of each corresponding frequency band according to the multiple power adjustment information, and therefore, compared with the prior art, the whole CSI-RS configuration bandwidth shares one PcThe scheme for adjusting the CSI-RS channel estimation result can be improvedAccuracy of channel estimation when CSI-RS is multiplexed.
Or, for example, in an example that the network device 30 shown in fig. 2 interacts with any terminal device 40, in this embodiment, in another possible implementation manner, after determining power adjustment information corresponding to the CSI-RS configuration bandwidth, the network device sends indication information to the terminal device, where the indication information is used to indicate the power adjustment information corresponding to the CSI-RS configuration bandwidth, the power adjustment information includes the multiplexing number N of the CSI-RS configuration bandwidth or a parameter value determined by the network device according to the multiplexing number N, and N is a positive integer greater than 1. And the terminal equipment receives the indication information from the network equipment and adjusts the CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information. The specific implementation of the scheme will be described in detail in the following method embodiments, and will not be described herein again. Based on the scheme, since the indication information sent by the network device to the terminal device may indicate power adjustment information corresponding to the CSI-RS configuration bandwidth, where the power adjustment information includes the multiplexing number N of the CSI-RS configuration bandwidth or a parameter value determined by the network device according to the multiplexing number N, where N is a positive integer, the terminal device may adjust CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information, and therefore, the terminal device shares one P for the entire CSI-RS configuration bandwidth in the prior artcThe scheme for adjusting the CSI-RS channel estimation result can improve the accuracy of channel estimation when the CSI-RS is multiplexed.
Optionally, the network device 30 in this embodiment is a device that connects the terminal device 40 to a wireless network, and may be an evolved Node B (eNB or eNodeB) in Long Term Evolution (LTE); or a base station in a fifth generation (5th generation, 5G) network or a Public Land Mobile Network (PLMN) in a future evolution, broadband network service gateway (BNG), a convergence switch or a non-third generation partnership project (3 GPP) access device, and the like, which is not specifically limited in this embodiment of the present application. Optionally, the base station in the embodiment of the present application may include various forms of base stations, for example: macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like, which are not specifically limited in this embodiment of the present application.
Optionally, the terminal device 40 in the embodiment of the present application may be a device for implementing a wireless communication function, such as a terminal or a chip that can be used in the terminal. The terminal may be a User Equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a distant station, a remote terminal, a mobile device, a wireless communication device, a terminal agent or a terminal device, etc. in a 5G network or a PLMN which is evolved in the future. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, or a wearable device, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The terminal may be mobile or stationary.
Optionally, the network device 30 and the terminal device 40 in this embodiment may also be referred to as a communication apparatus, which may be a general device or a special device, and this is not specifically limited in this embodiment.
Optionally, as shown in fig. 3, a schematic structural diagram of the network device 30 and the terminal device 40 provided in the embodiment of the present application is shown.
The terminal device 40 includes at least one processor (exemplarily illustrated in fig. 3 by including one processor 401) and at least one transceiver (exemplarily illustrated in fig. 3 by including one transceiver 403). Optionally, the terminal device 40 may further include at least one memory (exemplarily illustrated in fig. 3 by including one memory 402), at least one output device (exemplarily illustrated in fig. 3 by including one output device 404), and at least one input device (exemplarily illustrated in fig. 3 by including one input device 405).
The processor 401, the memory 402 and the transceiver 403 are connected by a communication line. The communication link may include a path for transmitting information between the aforementioned components.
The processor 401 may be a general processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the present disclosure. In a specific implementation, the processor 401 may also include multiple CPUs as an embodiment, and the processor 401 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores that process data (e.g., computer program instructions).
The memory 402 may be a device having a storage function. Such as, but not limited to, read-only memory (ROM) or other types of static memory devices that may store static information and instructions, Random Access Memory (RAM) or other types of dynamic memory devices that may store information and instructions, electrically erasable programmable read-only memory (EEPROM), compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 402 may be separate and coupled to the processor 401 via a communication link. The memory 402 may also be integrated with the processor 401.
The memory 402 is used for storing computer-executable instructions for executing the present application, and is controlled by the processor 401 to execute. In particular, the processor 401 is configured to execute computer-executable instructions stored in the memory 402, so as to implement the method for adjusting power described in the embodiment of the present application. Optionally, the computer execution instruction in the embodiment of the present application may also be referred to as an application program code or a computer program code, which is not specifically limited in the embodiment of the present application.
The transceiver 403 may use any transceiver or other device for communicating with other devices or communication networks, such as ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), or the like. The transceiver 403 includes a transmitter (Tx) and a receiver (Rx).
An output device 404 is in communication with the processor 401 and may display information in a variety of ways. For example, the output device 404 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like.
The input device 405 is in communication with the processor 401 and may accept user input in a variety of ways. For example, the input device 405 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.
Network device 30 includes at least one processor (illustrated in fig. 3 as including one processor 301), at least one transceiver (illustrated in fig. 3 as including one transceiver 303), and at least one network interface (illustrated in fig. 3 as including one network interface 304). Optionally, the network device 30 may further include at least one memory (exemplarily illustrated in fig. 3 by including one memory 302). The processor 301, the memory 302, the transceiver 303, and the network interface 304 are connected via a communication line. The network interface 304 is configured to connect with a core network device through a link (e.g., an S1 interface), or connect with a network interface of another network device (not shown in fig. 3) through a wired or wireless link (e.g., an X2 interface), which is not specifically limited in this embodiment of the present application. In addition, the description of the processor 301, the memory 302 and the transceiver 303 may refer to the description of the processor 401, the memory 402 and the transceiver 403 in the terminal device 40, and will not be repeated herein.
In conjunction with the schematic structural diagram of the terminal device 40 shown in fig. 3, fig. 4 is a specific structural form of the terminal device 40 provided in the embodiment of the present application.
Wherein, in some embodiments, the functions of the processor 401 in fig. 3 may be implemented by the processor 110 in fig. 4.
In some embodiments, the functions of the transceiver 403 in fig. 3 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, and the like in fig. 4.
Wherein the antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in terminal equipment 40 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.
The mobile communication module 150 may provide a solution including 2G/3G/4G/5G wireless communication applied on the terminal device 40. The mobile communication module 150 may include at least one filter, a switch, a power amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module 150 may receive the electromagnetic wave from the antenna 1, filter, amplify, etc. the received electromagnetic wave, and transmit the electromagnetic wave to the modem processor for demodulation. The mobile communication module 150 may also amplify the signal modulated by the modem processor, and convert the signal into electromagnetic wave through the antenna 1 to radiate the electromagnetic wave. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the same device as at least some of the modules of the processor 110.
The wireless communication module 160 may provide a solution for wireless communication applied to the terminal device 40, including Wireless Local Area Networks (WLANs), such as Wi-Fi networks, Bluetooth (BT), Global Navigation Satellite Systems (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), infrared technology (IR), and the like. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, performs frequency modulation and filtering processing on electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, perform frequency modulation and amplification on the signal, and convert the signal into electromagnetic waves through the antenna 2 to radiate the electromagnetic waves. When the terminal device 40 is a first device, the wireless communication module 160 may provide a solution for NFC wireless communication applied on the terminal device 40, meaning that the first device includes an NFC chip. The NFC chip can improve the NFC wireless communication function. When the terminal device 40 is a second device, the wireless communication module 160 may provide a solution for NFC wireless communication applied on the terminal device 40, that is, the first device includes an electronic tag (e.g., a Radio Frequency Identification (RFID) tag). The NFC chip of the other device is close to the electronic tag to perform NFC wireless communication with the second device.
In some embodiments, antenna 1 of terminal device 40 is coupled to mobile communication module 150 and antenna 2 is coupled to wireless communication module 160 so that terminal device 40 can communicate with networks and other devices via wireless communication techniques. The wireless communication technology may include global system for mobile communications (GSM), General Packet Radio Service (GPRS), code division multiple access (code division multiple access, CDMA), Wideband Code Division Multiple Access (WCDMA), time-division code division multiple access (time-division code division multiple access, TD-SCDMA), Long Term Evolution (LTE), LTE, BT, GNSS, WLAN, NFC, FM, or IR technology, etc. The GNSS may include a Global Positioning System (GPS), a global navigation satellite system (GLONASS), a beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS), or a Satellite Based Augmentation System (SBAS).
In some embodiments, the functions of the memory 402 in fig. 3 may be implemented by the internal memory 121 in fig. 4 or an external memory (e.g., a Micro SD card) or the like connected to the external memory interface 120.
In some embodiments, the functionality of output device 404 in FIG. 3 may be implemented by display screen 194 in FIG. 4. The display screen 194 is used to display images, videos, and the like. The display screen 194 includes a display panel.
In some embodiments, the functionality of the input device 405 of fig. 3 may be implemented by a mouse, a keyboard, a touch screen device, or the sensor module 180 of fig. 4. Illustratively, as shown in fig. 4, the sensor module 180 may include, for example, one or more of a pressure sensor 180A, a gyroscope sensor 180B, a barometric pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, and a bone conduction sensor 180M, which is not particularly limited in this embodiment of the present application.
In some embodiments, as shown in fig. 4, the terminal device 40 may further include one or more of an audio module 170, a camera 193, an indicator 192, a motor 191, a key 190, a SIM card interface 195, a USB interface 130, a charging management module 140, a power management module 141, and a battery 142, wherein the audio module 170 may be connected to a speaker 170A (also referred to as a "speaker"), a receiver 170B (also referred to as a "receiver"), a microphone 170C (also referred to as a "microphone", "microphone"), or an earphone interface 170D, which is not particularly limited in this embodiment.
It is to be understood that the structure shown in fig. 4 does not constitute a specific limitation to the terminal device 40. For example, in other embodiments of the present application, terminal device 40 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.
The power adjustment method provided in the embodiment of the present application will be described below by taking an example of interaction between the network device 30 and any terminal device 40 shown in fig. 2 with reference to fig. 1b to 4.
It should be noted that, in the following embodiments of the present application, names of messages between network elements or names of parameters in messages are only an example, and other names may also be used in a specific implementation, which is not specifically limited in this embodiment of the present application.
As shown in fig. 5, a method for power adjustment provided in an embodiment of the present application includes the following steps:
s501, configuring a CSI-RS configuration bandwidth for the terminal equipment by the network equipment, and determining power adjustment information of each of a plurality of frequency bands on the CSI-RS configuration bandwidth.
The CSI-RS configuration bandwidth in this embodiment may be any one of one or more CSI-RS configuration bandwidths configured for the terminal device by the network device, and this is not specifically limited in this embodiment of the present application. For a related description of the CSI-RS configuration bandwidth, reference may be made to the brief introduction of the detailed description, and details are not repeated here.
In this embodiment of the present application, in the case that the CSI-RS configuration bandwidth in step S501 overlaps with a CSI-RS configuration bandwidth configured by the network device for other terminal devices, the network device may determine power adjustment information of each of multiple frequency bands on the CSI-RS configuration bandwidth.
In a possible scenario, the CSI-RS configuration bandwidth in step S501 partially overlaps with the CSI-RS configuration bandwidth configured by the network device for other terminal devices. That is, a part of the multiple frequency bands on the CSI-RS configuration bandwidth overlaps with the CSI-RS configuration bandwidth configured by the network device for other terminals.
In this case, at least two pieces of power adjustment information of each of the plurality of frequency bands on the CSI-RS configuration bandwidth are different.
For example, the power adjustment information of the frequency band overlapping with the CSI-RS configuration bandwidth configured by the network device for the other terminal is different from the power adjustment information of the frequency band not overlapping with the CSI-RS configuration bandwidth.
Or, further, in a frequency band overlapping with a CSI-RS configuration bandwidth configured by the network device for other terminals, the power adjustment information of two different frequency bands is different.
Wherein the same plurality of power adjustment information are different from the reference power adjustment information.
For example, assuming that the terminal device in step S501 is the terminal device 1, and the CSI-RS configuration bandwidth in step S501 is the CSI-RS configuration bandwidth 1, as shown in fig. 6, there is an overlapping portion between the CSI-RS configuration bandwidth 1 and the CSI-RS configuration bandwidth 2 configured by the network device for the terminal device 2, and there is an overlapping portion between the CSI-RS configuration bandwidth 1 and the CSI-RS configuration bandwidth 3 configured by the network device for the terminal device 3, the network device may divide the CSI-RS configuration bandwidth 1 into 3 frequency bands according to the number of times that the CSI-RS configuration bandwidth 1 overlaps the CSI-RS configuration bandwidth configured by the network device for other terminal devices, which are the frequency band 1, the frequency band 2, and the frequency band 3 in fig. 6 respectively. The network device may determine power adjustment information corresponding to the frequency band 1, power adjustment information corresponding to the frequency band 2, and power adjustment information corresponding to the frequency band 3. Any two pieces of power adjustment information among the power adjustment information corresponding to the frequency band 1, the power adjustment information corresponding to the frequency band 2, and the power adjustment information corresponding to the frequency band 3 are different.
In the above example, the CSI-RS configuration bandwidth 1 is divided into frequency bands by the number of times that the CSI-RS configuration bandwidth 1 overlaps with the CSI-RS configuration bandwidth configured by the network device for other terminal devices, and of course, the CSI-RS configuration bandwidth 1 may also be divided into a plurality of frequency bands according to other manners or rules, where at least two pieces of power adjustment information of the plurality of frequency bands are different, but there may be a case where the respective power adjustment information of different frequency bands is the same, which is not specifically limited in this embodiment of the present application.
Or, in another possible scenario, the CSI-RS configuration bandwidth in step S501 and the CSI-RS configuration bandwidth configured by the network device for other terminal devices are all overlapped. That is, all the frequency bands in the multiple frequency bands overlap with the CSI-RS configuration bandwidth configured by the network device for other terminal devices.
In this case, the power adjustment information for each of the plurality of frequency bands is the same.
In the embodiment of the present invention, it is considered that the initial power adjustment information is power adjustment information required for adjusting CSI-RS channel estimation of a CSI-RS configuration bandwidth, and generally corresponds to a scenario in which the multiplexing number N is 1 (i.e., no overlapping), and all frequency bands in the multiple frequency bands are overlapped with the CSI-RS configuration bandwidth configured by the network device for other terminal devices, that is, correspond to a scenario in which the multiplexing number N is greater than 1, so that the same multiple power adjustment information is different from the initial power adjustment information.
For example, assuming that the terminal device in step S501 is the terminal device 1, and the CSI-RS configuration bandwidth in step S501 is the CSI-RS configuration bandwidth 1, as shown in fig. 7, there is an overlapping portion between the CSI-RS configuration bandwidth 1 and the CSI-RS configuration bandwidth 2 configured by the network device for the terminal device 2, the network device may divide the CSI-RS configuration bandwidth 1 into 3 frequency bands, which are the frequency band 1, the frequency band 2, and the frequency band 3 in fig. 7 respectively. The network device may determine power adjustment information corresponding to the frequency band 1, power adjustment information corresponding to the frequency band 2, and power adjustment information corresponding to the frequency band 3. The power adjustment information corresponding to the frequency band 1, the power adjustment information corresponding to the frequency band 2, and the power adjustment information corresponding to the frequency band 3 are all the same, and the same plurality of power adjustment information are different from the initial power adjustment information.
It should be noted that, in the example shown in fig. 7, the CSI-RS configuration bandwidth 2 includes a CSI-RS configuration bandwidth 1 as an example. Of course, the CSI-RS configuration bandwidth 2 may also be the same as the CSI-RS configuration bandwidth 1, which is not specifically limited in this embodiment of the application.
Or, in this case, at least two pieces of power adjustment information of each of the plurality of frequency bands are different.
For example, assuming that the terminal device in step S501 is the terminal device 1, and the CSI-RS configuration bandwidth in step S501 is the CSI-RS configuration bandwidth 1, as shown in fig. 8, there is an overlapping portion between the CSI-RS configuration bandwidth 1 and the CSI-RS configuration bandwidth 2 configured by the network device for the terminal device 2, and there is an overlapping portion between the CSI-RS configuration bandwidth 1 and the CSI-RS configuration bandwidth 3 configured by the network device for the terminal device 3, the network device may divide the CSI-RS configuration bandwidth 1 into 2 frequency bands according to the number of times that the CSI-RS configuration bandwidth 1 overlaps the CSI-RS configuration bandwidth configured by the network device for other terminal devices, which are the frequency band 1 and the frequency band 2 in fig. 8, respectively. The network device may determine power adjustment information corresponding to the frequency band 1 and power adjustment information corresponding to the frequency band 2. The power adjustment information corresponding to the frequency band 1 is different from the power adjustment information corresponding to the frequency band 2.
In the above example, the CSI-RS configuration bandwidth 1 is divided into frequency bands by the number of times that the CSI-RS configuration bandwidth 1 overlaps with the CSI-RS configuration bandwidth configured by the network device for other terminal devices, and of course, the CSI-RS configuration bandwidth 1 may also be divided into a plurality of frequency bands according to other manners or rules, where at least two pieces of power adjustment information of the plurality of frequency bands are different, but there may be a case where the respective power adjustment information of different frequency bands is the same, which is not specifically limited in this embodiment of the present application.
It should be noted that, in this embodiment of the application, the fact that the CSI-RS configuration bandwidth in step S501 and the CSI-RS configuration bandwidth configured by the network device for other terminal devices are all overlapped means that all frequency bands of the CSI-RS configuration bandwidth in step S501 are multiplexed by other terminal devices, which is described in a unified manner herein and is not described in detail below.
Optionally, in this embodiment of the application, the power adjustment information of each frequency band in the multiple frequency bands includes the multiplexing number N of the frequency band, or a parameter value r (i.e., r ═ f (N)) determined by the network device according to the multiplexing number N of the frequency band, or the multiplexing number N and P of the network device according to the frequency bandcThe determined parameter value r (i.e., r ═ f (N, Pc)), N is a positive integer.
In this embodiment, the multiplexing times of the frequency band refer to the times of the frequency band being reused by different terminal devices. For example, taking the example shown in fig. 6 as an example, since the frequency band 1 is only used by the terminal device 1, the number of times of multiplexing the frequency band 1 is 1; since the frequency band 2 can be used by the terminal device 1 and the terminal device 3, the multiplexing number of the frequency band 2 is 2; since the frequency band 3 can be used by the terminal device 1, the terminal device 2, and the terminal device 3, the number of times of multiplexing of the frequency band 3 is 3. Or, for example, taking the example shown in fig. 7 as an example, since the frequency band 1, the frequency band 2, and the frequency band 3 are all used by the terminal device 1 and the terminal device 2, the number of times of multiplexing the frequency band 1, the frequency band 2, and the frequency band 3 is all 2.
Taking the example shown in fig. 6 as an example, if the power adjustment information of each of the plurality of frequency bands includes the number of times of multiplexing N of the frequency band, the power adjustment information N of the frequency band 1 is 1, the power adjustment information N of the frequency band 2 is 2, and the power adjustment information N of the frequency band 3 is 3.
Or, taking the example shown in fig. 6 as an example, if the power adjustment information of each of the multiple frequency bands includes the parameter value r determined by the network device according to the number of times of multiplexing N of the frequency band, assuming that the power is allocated equally:
for example, if r may be an adjustment value of a logarithmic scale, for example, r is 10lgN, the power adjustment information r of the band 1 is 10lgN is 0, the power adjustment information r of the band 2 is 10lgN is 10lg2, and the power adjustment information r of the band 3 is 10lgN is 10lg 3.
Alternatively, for example, if r may be an adjustment value on a logarithmic scale, such as r-10 lgN, the power adjustment information r of the band 1 is-10 lgN is 0, the power adjustment information r of the band 2 is-10 lgN is-10 lg2, and the power adjustment information r of the band 3 is-10 lgN is-10 lg 3.
Alternatively, for example, if r may be a linear adjustment value, e.g., r is equal to N, then the power adjustment information r of the frequency band 1 is equal to N is equal to 1, the power adjustment information r of the frequency band 2 is equal to N is equal to 2, and the power adjustment information r of the frequency band 3 is equal to N is equal to 3.
Alternatively, for example, if r may be an adjustment value of a linear scale, for example, r is 1/N, then the power adjustment information r of the band 1 is 1/N, the power adjustment information r of the band 2 is 1/N1/2, and the power adjustment information r of the band 3 is 1/N1/3.
Alternatively, for example, if r can be a linear scale amplitude adjustment value, such as
Figure BDA0001931862630000141
Power adjustment information of band 1
Figure BDA0001931862630000142
Power adjustment information for frequency band 2
Figure BDA0001931862630000143
Power adjustment information for frequency band 3
Figure BDA0001931862630000144
Alternatively, for example, if r can be a linear scale amplitude adjustment value, such as
Figure BDA0001931862630000145
Power adjustment information of band 1
Figure BDA0001931862630000146
Power adjustment information for frequency band 2
Figure BDA0001931862630000147
Power adjustment information for frequency band 3
Figure BDA0001931862630000148
Alternatively, for example, if r can be the displacement of power, such as r ═ log2N, the power adjustment information r of the frequency band 1 is log2N is 0, and the power adjustment information r of the frequency band 2 is log2N1, and power adjustment information r log of band 32N＝log23。
Alternatively, for example, if r can be the displacement of power, e.g., r-log2N, the power adjustment information r of the frequency band 1 is-log2N is 0, and the power adjustment information r of the frequency band 2 is-log2N-1, band 3 power adjustment information r-log2N＝-log23。
Alternatively, for example, if r can be the amount of displacement of the amplitude, such as
Figure BDA0001931862630000149
Power adjustment information of band 1
Figure BDA00019318626300001410
Power adjustment information for frequency band 2
Figure BDA00019318626300001411
Power adjustment information for frequency band 3
Figure BDA00019318626300001412
Alternatively, for example, if r can be the amount of displacement of the amplitude, such as
Figure BDA00019318626300001413
Power adjustment information of band 1
Figure BDA00019318626300001414
Power adjustment information for frequency band 2
Figure BDA00019318626300001415
Power adjustment information for frequency band 3
Figure BDA00019318626300001416
Alternatively, taking the example shown in fig. 6 as an example, if each of the multiple frequency bands, the power adjustment information includes the multiplexing times N and P of the network device according to the frequency bandcIf the determined parameter value r (i.e., r ═ f (N, Pc)) is equal to the power allocation:
illustratively, if r is 10lgN + PcIf the power adjustment information r of the frequency band 1 is 10lgN + Pc＝PcThe power adjustment information r of the frequency band 2 is 10lg2+ P, 10lgNcThe power adjustment information r of band 3 is 10lgN + Pc＝10lg3+Pc。
As can be seen from the above example, the two different power adjustment information differ by an offset, or the ratio between the two different power adjustment information is not 1.
Taking the example shown in fig. 7 as an example, if the power adjustment information of each of the plurality of frequency bands includes the number of times of multiplexing N of the frequency band, the power adjustment information of the frequency band 1, the power adjustment information of the frequency band 2, and the power adjustment information of the frequency band 3 are all N-2.
Or, taking the example shown in fig. 7 as an example, if the power adjustment information of each of the multiple frequency bands includes a parameter value r determined by the network device according to the number of times of multiplexing N of the frequency band, assuming that equal power is allocated:
for example, if r may be an adjustment value in a logarithmic scale, for example, r is 10lgN, then the power adjustment information of the band 1, the power adjustment information of the band 2, and the power adjustment information of the band 3 are all r is 10lgN which is 10lg 2.
Alternatively, for example, if r may be an adjustment value in a logarithmic scale, such as r-10 lgN, the power adjustment information of the band 1, the power adjustment information of the band 2, and the power adjustment information of the band 3 are all r-10 lgN-10 lg 2.
Alternatively, for example, if r may be an adjustment value of a linear scale, for example, r is equal to N, then all of the power adjustment information of the frequency band 1, the power adjustment information of the frequency band 2, and the power adjustment information of the frequency band 3 are r is equal to N is equal to 2.
Alternatively, for example, if r may be an adjustment value of a linear scale, for example, r is 1/N, then the power adjustment information of the frequency band 1, the power adjustment information of the frequency band 2, and the power adjustment information of the frequency band 3 are all r is 1/N1/2.
Alternatively, for example, if r can be a linear scale amplitude adjustment value, such as
Figure BDA00019318626300001417
The power adjustment information of band 1, the power adjustment information of band 2 and the power adjustment information of band 3 are all the same
Figure BDA00019318626300001418
Alternatively, for example, if r can be a linear scale amplitude adjustment value, such as
Figure BDA0001931862630000151
The power adjustment information of band 1, the power adjustment information of band 2 and the power adjustment information of band 3 are all the same
Figure BDA0001931862630000152
Alternatively, for example, if r can be the displacement of power, such as r ═ log2N, the power adjustment information of the band 1, the power adjustment information of the band 2, and the power adjustment information of the band 3 are all r-log2N＝1。
Alternatively, for example, if r can be the displacement of power, e.g., r-log2N, the power adjustment information of the band 1, the power adjustment information of the band 2, and the power adjustment information of the band 3 are all r-log2N＝-1。
Alternatively, for example, if r can be the amount of displacement of the amplitude, such as
Figure BDA0001931862630000153
The power adjustment information of band 1, the power adjustment information of band 2 and the power adjustment information of band 3 are all the same
Figure BDA0001931862630000154
Alternatively, for example, if r can be the amount of displacement of the amplitude, such as
Figure BDA0001931862630000155
The power adjustment information of band 1, the power adjustment information of band 2 and the power adjustment information of band 3 are all the same
Figure BDA0001931862630000156
Alternatively, taking the example shown in fig. 7 as an example, if each of the multiple frequency bands, the power adjustment information includes the multiplexing times N and P of the network device according to the frequency bandcIf the determined parameter value r (i.e., r ═ f (N, Pc)) is equal to the power allocation:
illustratively, if r is 10lgN + PcIf the power adjustment information of the band 1, the power adjustment information of the band 2, and the power adjustment information of the band 3 are all r 10 lgN-10 lg2+ Pc。
As can be seen from the above example, in combination with the above description of the initial power adjustment information, the same plurality of pieces of power adjustment information are different from the initial power adjustment information by the same offset, or the ratios of the same plurality of pieces of power adjustment information to the initial power adjustment information are the same values other than 1.
S502, the network equipment sends indication information to the terminal equipment. Accordingly, the terminal device receives the indication information from the network device. The indication information indicates power adjustment information of each of a plurality of frequency bands on the CSI-RS configuration bandwidth.
Optionally, in this embodiment of the present application, power adjustment information of each of a plurality of frequency bands on a CSI-RS configuration bandwidth may be indicated at one time by one indication information; the power adjustment information of each of the multiple frequency bands on the CSI-RS configuration bandwidth may also be indicated by multiple pieces of indication information, where each piece of indication information indicates power adjustment information of each of one or more frequency bands on the CSI-RS configuration bandwidth, and the like, for example, one piece of indication information indicates power adjustment information of each of one or more frequency bands on the CSI-RS configuration bandwidth that has an overlapping portion with the CSI-RS configuration bandwidth configured by other terminal devices, and one piece of indication information indicates power adjustment information of each of one or more frequency bands on the CSI-RS configuration bandwidth that has no overlapping portion with the CSI-RS configuration bandwidth configured by other terminal devices.
The indication information in the embodiment of the present application may have various representation forms.
In a possible implementation manner, the indication information includes location information of the multiple frequency bands and power adjustment information of each of the multiple frequency bands.
The position information of the multiple frequency bands comprises at least two of start frequency domain position information, end frequency domain position information or sizes of the multiple frequency bands. For the description of the size of the frequency band, reference may be made to the brief introduction of the detailed description, and further description is omitted here.
For example, taking the CSI-RS configuration bandwidth in step S501 as CSI-RS configuration bandwidth 1 in fig. 6, where CSI-RS configuration bandwidth 1 is formed by a plurality of SBs as an example, that is, the size of the frequency band is represented by the number of SBs included in the frequency band, as shown in fig. 9, the location information of frequency band 1 may include information of a start SB of frequency band 1 (e.g., number SB8) and information of an end SB of frequency band 1 (e.g., number SB11), the location information of frequency band 2 may include information of a start SB of frequency band 2 (e.g., number SB5) and information of an end SB of frequency band 2 (e.g., number SB7), and the location information of frequency band 3 may include information of a start SB of frequency band 3 (e.g., number SB1) and information of an end SB of frequency band 3 (e.g., number SB 4).
Or, for example, taking the CSI-RS configuration bandwidth in step S501 as CSI-RS configuration bandwidth 1 in fig. 6, where CSI-RS configuration bandwidth 1 is formed by a plurality of SBs as an example, that is, the size of the frequency band is represented by the number of SBs included in the frequency band, as shown in fig. 10, the location information of frequency band 1 may include information of a start SB of frequency band 1 (e.g., number SB8) and the number 4 of SBs included in frequency band 1, the location information of frequency band 2 may include information of a start SB of frequency band 2 (e.g., number SB5) and the number 3 of SBs included in frequency band 2, and the location information of frequency band 3 may include information of a start SB of frequency band 3 (e.g., number SB1) and the number 4 of SBs included in frequency band 3.
Or, for example, taking the CSI-RS configuration bandwidth in step S501 as the CSI-RS configuration bandwidth 1 in fig. 6, where the CSI-RS configuration bandwidth 1 is formed by a plurality of SBs as an example, that is, the size of the frequency band is represented by the number of SBs included in the frequency band, as shown in fig. 11, the location information of the frequency band 1 may include information of end SBs of the frequency band 1 (for example, number SB11) and the number 4 of SBs included in the frequency band 1, the location information of the frequency band 2 may include information of end SB of the frequency band 2 (for example, number SB7) and the number 3 of SBs included in the frequency band 2, and the location information of the frequency band 3 may include information of end SB of the frequency band 3 (for example, number SB4) and the number 4 of SBs included in the frequency band 3.
Or, for example, taking the CSI-RS configuration bandwidth in step S501 as CSI-RS configuration bandwidth 1 in fig. 6, CSI-RS configuration bandwidth 1 is formed by a plurality of SBs, that is, the size of the frequency band is represented by the number of SBs included in the frequency band, as shown in fig. 12, the location information of the frequency band 1 may include information of a start SB of the frequency band 1 (e.g., number SB8), information of an end SB of the frequency band 1 (e.g., number SB11), and the number 4 of SBs included in the frequency band 1, the location information of the frequency band 2 may include information of a start SB of the frequency band 2 (e.g., number SB5), information of an end SB of the frequency band 2 (e.g., number SB7), and the number 3 of SBs included in the frequency band 2, and the location information of the frequency band 3 may include information of a start SB of the frequency band 3 (e.g., number SB1), information of an end SB of the frequency band 3 (e.g., number SB4), and the number 4 of SBs included in the frequency band 3.
Or, in another possible implementation manner, the indication information includes power adjustment information of each of the multiple frequency bands, and multiple first bit maps, where each bit in each first bit map is used to indicate whether there is corresponding power adjustment information in each frequency domain resource unit on the CSI-RS configuration bandwidth.
Exemplarily, taking the CSI-RS configuration bandwidth in step S501 as the CSI-RS configuration bandwidth 1 in fig. 6, the CSI-RS configuration bandwidth 1 is composed of a plurality of SBs (i.e., the frequency domain resource unit is SB), as shown in fig. 13. The indication information may include power adjustment information of band 1, power adjustment information of band 2, power adjustment information of band 3, and 3 first bit maps, assuming that the 3 first bit maps are respectively denoted as bit map 1, bit map 2, and bit map 3.
For example, assuming that a bit value of 1 indicates that corresponding power adjustment information exists, and a bit value of 0 indicates that corresponding power adjustment information does not exist, the bit map 1 may be 11110000000, where each bit in the bit map 1 is used to indicate whether power adjustment information of the frequency band 1 exists in each SB on the CSI-RS configuration bandwidth; bit map 2 may be 00001110000, where each bit in bit map 2 is used to indicate whether there is power adjustment information of frequency band 2 for each SB on the CSI-RS configuration bandwidth; bitmap 3 may be 00000001111, and each bit in bitmap 3 is used to indicate whether there is power adjustment information for band 3 for each SB on the CSI-RS configuration bandwidth.
Or, for example, assuming that a bit value of 1 indicates that there is no corresponding power adjustment information, and a bit value of 0 indicates that there is corresponding power adjustment information, the bit map 1 may be 00001111111, where each bit in the bit map 1 is used to indicate whether there is power adjustment information of the frequency band 1 in each SB on the CSI-RS configuration bandwidth; bit map 2 may be 11110001111, where each bit in bit map 2 is used to indicate whether there is power adjustment information of frequency band 2 for each SB on the CSI-RS configuration bandwidth; bitmap 3 may be 11111110000, and each bit in bitmap 3 is used to indicate whether there is power adjustment information for band 3 for each SB on the CSI-RS configuration bandwidth.
Or, in another possible implementation manner, the indication information may be hierarchical indication information, for example, the first-level indication information is position information and power adjustment information of M frequency bands, where the M frequency bands are obtained by performing multiple frequency band division on the CSI-RS configuration bandwidth, and M is a positive integer, where the multiple frequency bands in step S501 are partial frequency bands of the M frequency bands. The second-stage indication information may indicate a frequency band set, where the frequency band set includes a frequency band, of the M frequency bands, that allows adjustment of CSI-RS channel estimation; the third-level indication information may be used to activate or indicate a part or all of the frequency bands in the frequency band set indicated by the second-level indication information, where the part or all of the frequency bands are the plurality of frequency bands in step S501. Furthermore, the terminal device may obtain the power adjustment information of each of the multiple frequency bands in step S501, in combination with the first-level indication information.
Optionally, the second indication information may be characterized by a second bitmap, where the second bitmap is used to indicate the frequency band set, and each bit in the second bitmap is used to indicate whether to allow adjustment of CSI-RS channel estimation of each frequency band.
For example, assuming that the CSI-RS configuration bandwidth in step S501 is taken as CSI-RS configuration bandwidth 1 in fig. 6 as an example, there may be four ways of dividing CSI-RS configuration bandwidth 1 configured by the network device, as shown in (a) to (d) in fig. 14, to obtain 4 groups of frequency bands, which are: fig. 14 (a) includes a band 8, a band 9, and a band 10; fig. 14 (b) includes a band 4, a band 5, a band 6, and a band 7; included in (c) in fig. 14 are band 1, band 2, and band 3; fig. 14 (d) includes a band 11 and a band 12. The first level indication information may include location information of the 12 frequency bands and power adjustment information of each of the 12 frequency bands. Of course, if the location information and the power adjustment information of a frequency band in the 12 frequency bands are the same, repeated indication may not be needed, for example, if the location information and the power adjustment information of the frequency band 1 and the frequency band 8 are the same, the location information and the power adjustment information of the frequency band 1 or the frequency band 8 may only be indicated, which is described in a unified manner herein and will not be described again below.
Further, if the position information and the power adjustment information of the frequency band are not the same in the 12 frequency bands, the second indication information may be a 12-bit bitmap; alternatively, if the location information and the power adjustment information of the 12 frequency bands are the same, the second indication information may be a bitmap with less than 12 bits. Here, it is taken as an example that the location information and the power adjustment information of the 12 bands are not the same, and it is assumed that the numbers of the 1 st band to the 12 th band are as shown in (a) to (d) of fig. 14, which are respectively the band 8, the band 9, the band 10, the band 4, the band 5, the band 6, the band 7, the band 1, the band 2, the band 3, the band 11, and the band 12. If the CSI-RS channel estimates of the frequency bands 1 to 7 indicated by the first-level indication information are allowed to be adjusted (that is, the frequency band set includes the frequency bands 1 to 7), the 12-bit bitmap is 000111111100 when the bit value of 1 indicates that the CSI-RS channel estimates of the corresponding frequency band are allowed to be adjusted; alternatively, in the case that a bit value of 0 indicates that adjustment of CSI-RS channel estimation of the corresponding frequency band is allowed, the 12-bit bitmap is 111000000011. Further, assuming that the band 1 to the band 3 in (c) in fig. 14 are the band 1, the band 2, and the band 3 on the CSI-RS configuration bandwidth 1 in fig. 6, respectively, the third-level indication information may be three 3-bit information, which are 100, 101, and 110, respectively, where 100 denotes to activate or indicate the 5th band (i.e., the band 1) in the band set, 101 denotes to activate or indicate the 6 th band (i.e., the band 2) in the band set, and 110 denotes to activate or indicate the 7 th band (i.e., the band 3) in the band set. Furthermore, the terminal device may obtain the power adjustment information of the frequency band 1, the power adjustment information of the frequency band 2, and the power adjustment information of the frequency band 3 in combination with the RRC signaling. Of course, the third-level indication information may also be represented by a bitmap, for example, in this example, if the third-level indication information is represented by a bitmap, the bitmap may be a 7-bit bitmap, and each bit in the bitmap is used to indicate whether to activate a corresponding frequency band, which is not specifically limited in this embodiment of the present application.
Of course, the multi-level indication manner in this embodiment is not limited to the three-level indication, and may also be two-level indication, for example, the first-level indication information is position information and power adjustment information of M frequency bands, where the M frequency bands are obtained by performing multi-mode frequency band division on a CSI-RS configuration bandwidth, and M is a positive integer, where the multiple frequency bands in step S501 are partial frequency bands in the M frequency bands. The second-level indication information may activate or indicate a plurality of frequency bands in step S501, which is not specifically limited in this embodiment of the application.
In addition, the indication information in the embodiment of the present application may have a plurality of transmission modes.
In a possible implementation manner, the sending, by the network device, the indication information to the terminal device may include: the network equipment sends RRC signaling to the terminal equipment, and the RRC signaling comprises the indication information. Correspondingly, the receiving, by the terminal device, the indication information from the network device may include: the terminal device receives the RRC signaling from the network device.
Or, in another possible implementation manner, the sending, by the network device, the indication information to the terminal device may include: the network device transmits a media access control-control element (MAC-CE) signaling to the terminal device, the MAC-CE signaling including the indication information. Correspondingly, the receiving, by the terminal device, the indication information from the network device may include: the end device receives the MAC-CE signaling from the network device.
Or, in another possible implementation manner, the sending, by the network device, the indication information to the terminal device may include: the network device sends Downlink Control Information (DCI) signaling to the terminal device, where the DCI signaling includes the indication information. Correspondingly, the receiving, by the terminal device, the indication information from the network device may include: the terminal device receives the DCI signaling from the network device.
Or, in another possible implementation manner, the sending, by the network device, the indication information to the terminal device may include: the method includes that network equipment sends RRC signaling to terminal equipment, the RRC signaling comprises position information and power adjustment information of M frequency bands, the M frequency bands are obtained by performing frequency band division on CSI-RS configuration bandwidth in multiple modes, M is a positive integer, and the plurality of frequency bands in step S501 are partial frequency bands of the M frequency bands; the method comprises the steps that network equipment sends MAC-CE signaling to terminal equipment, the MAC-CE signaling is used for indicating a frequency band set, and the frequency band set comprises frequency bands allowing CSI-RS channel estimation to be adjusted in M frequency bands; the network device sends a DCI signaling to the terminal device, where the DCI signaling is used to activate or indicate a part or all of frequency bands in the frequency band set, where the part or all of frequency bands are multiple frequency bands in step S501. Correspondingly, the receiving, by the terminal device, the indication information from the network device may include: the terminal equipment receives the RRC signaling from the network equipment; the terminal equipment receives the MAC-CE signaling from the network equipment; and the terminal equipment receives the DCI signaling from the network equipment. Wherein, the implementation manner may correspond to the case of the above three-level indication. For other cases of the hierarchical indication, reference may be made to this implementation, and details thereof are not repeated here.
Optionally, in this embodiment of the present application, if the network device determines that the number of multiplexing times N of a certain frequency band is 1, instead of indicating, to the terminal device, the number of multiplexing times N of the frequency band or a parameter value r (i.e., r ═ f (N)) determined by the network device according to the number of multiplexing times N of the frequency band, the terminal device may send P through RRC signaling according to the network device insteadcAnd adjusting the channel estimation of the frequency band according to an existing CSI-RS channel estimation adjustment manner, which is not specifically limited in this embodiment of the present application.
S503, the terminal equipment adjusts the CSI-RS channel estimation of the frequency band corresponding to each piece of power adjustment information.
In a possible implementation manner, a terminal device adjusts CSI-RS channel estimates of respective corresponding frequency bands according to a plurality of pieces of power adjustment information, including:
aiming at any frequency band in a plurality of frequency bands, the terminal equipment adjusts the CSI-RS channel estimation of the frequency band according to the multiplexing times N of the frequency band and the following formula (1) or formula (2):
Figure BDA0001931862630000181
Figure BDA0001931862630000182
wherein the content of the first and second substances,
Figure BDA0001931862630000183
denotes the adjusted channel estimation, H denotes the channel estimation before adjustment, N denotes the number of multiplexing of the band, P denotes the number of multiplexing of the bandcRepresents the ratio of the power of the PDSCH RE indicated by the network equipment to the power of the CSI-RS RE. The P iscThe network device may be configured to the terminal device through RRC signaling, or may be preset or stored in the terminal device, which is not specifically limited in this embodiment of the present application.
Or, in another possible implementation manner, the adjusting, by the terminal device, the CSI-RS channel estimates of respective corresponding frequency bands according to the multiple pieces of power adjustment information includes:
for any frequency band in a plurality of frequency bands, the terminal device adjusts the CSI-RS channel estimation of the frequency band according to the parameter value determined by the network device according to the multiplexing number N of the frequency band and formula (3):
Figure BDA0001931862630000184
wherein the content of the first and second substances,
Figure BDA0001931862630000191
represents the adjusted channel estimate; h represents channel estimation before adjustment; r represents a parameter value determined by the network device according to the multiplexing times N of the frequency band, wherein r is f (N); g (r, Pc) represents the terminal equipment according to the parameter values r and PcThe determined power adjustment value, N represents the multiplexing times of the frequency band, PcRepresents the ratio of the power of the PDSCH RE indicated by the network equipment to the power of the CSI-RS RE. The P iscThe network device may be configured to the terminal device through RRC signaling, or may be preset or stored in the terminal device, which is not specifically limited in this embodiment of the present application.
By way of example, several possible forms of g (r, Pc) are given below, as follows:
Figure BDA0001931862630000192
optionally, in the case of equal power allocation, r may be an adjustment value in a logarithmic scale, for example, r is 10 lgN.
Alternatively, the first and second electrodes may be,
Figure BDA0001931862630000193
optionally, in the case of equal power allocation, r may be an adjustment value in a logarithmic scale, such as-10 lgN.
Alternatively, the first and second electrodes may be,
Figure BDA0001931862630000194
optionally, in the case of equal power allocation, r may be an adjustment value of a linear scale, for example, r ═ N.
Alternatively, the first and second electrodes may be,
Figure BDA0001931862630000195
optionally, in the case of equal power allocation, r may be an adjustment value of a linear scale, for example, r is 1/N.
Alternatively, the first and second electrodes may be,
Figure BDA0001931862630000196
optional at this time, case of equal power distributionR may be an adjustment value of a linear scale, e.g.
Figure BDA0001931862630000197
Alternatively, the first and second electrodes may be,
Figure BDA0001931862630000198
optionally, in the case of equal power distribution, r may be a linear scale amplitude adjustment value, e.g.
Figure BDA0001931862630000199
Alternatively, the first and second electrodes may be,
Figure BDA00019318626300001910
alternatively, in the case of equal power distribution, r may be the displacement of power, e.g. r is log2N。
Alternatively, the first and second electrodes may be,
Figure BDA00019318626300001911
optionally, in the case of equal power distribution, r may be the displacement of power, e.g. r ═ log2N。
Alternatively, the first and second electrodes may be,
Figure BDA00019318626300001912
optionally at this point, in the case of equal power distribution, r may be the amount of displacement of the amplitude, e.g.
Figure BDA00019318626300001913
Alternatively, the first and second electrodes may be,
Figure BDA00019318626300001914
optionally at this point, in the case of equal power distribution, r may be the amount of displacement of the amplitude, e.g.
Figure BDA00019318626300001915
Or, in another possible implementation manner, adjusting, by the terminal device, CSI-RS channel estimates of respective corresponding frequency bands according to the multiple pieces of power adjustment information includes:
aiming at any frequency band in a plurality of frequency bands, the terminal equipment multiplexes N and P according to the frequency band according to the network equipmentcAnd (4) adjusting the CSI-RS channel estimation of the frequency band according to the determined parameter value and the formula (4):
Figure BDA00019318626300001916
wherein the content of the first and second substances,
Figure BDA00019318626300001917
represents the adjusted channel estimate; h represents channel estimation before adjustment; r represents the multiplexing times N and P of the network equipment according to the frequency bandcDetermined parameter values r ═ f (N, Pc), PcThe ratio of the power of the PDSCH RE indicated by the network equipment to the power of the CSI-RS RE is represented, and N represents the multiplexing times of the frequency band; and g (r) represents a power adjustment value determined by the terminal equipment according to the parameter value r.
By way of example, one possible form of g (r) is given below as follows:
Figure BDA0001931862630000201
optionally, in the case of equal power distribution, r may be 10lgN + Pc。
Alternatively, the power adjustment information in the embodiment of the present application may also be a quantized value of the r instead of the r, and accordingly, r in the g (r, Pc) or g (r) should also be replaced by a quantized value of the r, which is not limited herein.
Alternatively, optionally, the power adjustment information in this embodiment of the application may also be not r described above, but the network device and the terminal device define in advance a one-to-one correspondence between a plurality of quantized values and indexes, and after determining r in the above manner and obtaining one quantized value of r, the network device sends the index corresponding to the one quantized value of r to the terminal device as the power adjustment information based on the one-to-one correspondence. Furthermore, the terminal device may determine a quantized value of r corresponding to the index based on the one-to-one correspondence relationship and the index, and then replace r in g (r, Pc) or g (r) with a quantized value of r, which is not limited herein.
Optionally, in this embodiment of the present application, the quantized value of r may be an approximate value of r. Illustratively, the approximate value of r may be, for example, a value obtained by rounding r up, a value obtained by rounding r down, or the like.
Based on the power adjustment method provided by the embodiment of the application, since the indication information sent by the network device to the terminal device can indicate the respective power adjustment information of the multiple frequency bands on the CSI-RS configuration bandwidth, so that the terminal device can adjust the CSI-RS channel estimation of the respective corresponding frequency band according to the multiple power adjustment information, compared with the prior art in which the entire CSI-RS configuration bandwidth shares one PcThe scheme for adjusting the CSI-RS channel estimation result can improve the accuracy of channel estimation when the CSI-RS is multiplexed.
The processor 301 in the network device 30 shown in fig. 3 may call the application code stored in the memory 302 to instruct the network device to perform the actions of the network device in the above steps S501 to S503, and the processor 401 in the terminal device 40 shown in fig. 3 may call the application code stored in the memory 402 to instruct the network device to perform the actions of the terminal device in the above steps S501 to S503, which is not limited in this embodiment.
Optionally, as shown in fig. 15, a method for power adjustment provided in an embodiment of the present application includes the following steps:
s1501, configuring, by the network device, a CSI-RS configuration bandwidth for the terminal device, and determining power adjustment information corresponding to the CSI-RS configuration bandwidth, wherein the power adjustment information corresponding to the CSI-RS configuration bandwidth includes the multiplexing number N of the CSI-RS configuration bandwidth or a parameter value r determined by the network device according to the multiplexing number N of the CSI-RS configuration bandwidth, and N is a positive integer.
The CSI-RS configuration bandwidth in this embodiment may be any one of one or more CSI-RS configuration bandwidths configured for the terminal device by the network device, and this is not specifically limited in this embodiment of the present application. For a related description of the CSI-RS configuration bandwidth, reference may be made to the brief introduction of the detailed description, and details are not repeated here.
In this embodiment of the application, in the case that the CSI-RS configuration bandwidth in step S1501 is completely overlapped with the CSI-RS configuration bandwidth configured by the network device for other terminal devices (or it may be described that the CSI-RS configuration bandwidth in step S1501 is completely multiplexed by other terminal devices), the network device may determine the power adjustment information corresponding to the CSI-RS configuration bandwidth.
For example, assuming that the terminal device in step S1501 is the terminal device 1, and the CSI-RS configuration bandwidth in step S1501 is the CSI-RS configuration bandwidth 1, as shown in fig. 16, the CSI-RS configuration bandwidth 1 and the CSI-RS configuration bandwidth 2 configured by the network device for the terminal device 2 are all overlapped, the network device may determine power adjustment information corresponding to the CSI-RS configuration bandwidth 1, where the power adjustment information includes the multiplexing number N of the CSI-RS configuration bandwidth 2, or the power adjustment information includes the parameter value r (i.e., r ═ f (N)) determined by the network device according to the multiplexing number N of the CSI-RS configuration bandwidth 2, or the power adjustment information includes the multiplexing number N and P of the network device according to the CSI-RS configuration bandwidthcThe determined parameter value r (i.e., r ═ f (N, Pc)). The method for the network device to determine the parameter value r according to the multiplexing number N of the CSI-RS configuration bandwidth is similar to the method for the network device to determine the parameter value r according to the multiplexing number N of the frequency band in step S501 in the embodiment shown in fig. 5, and the network device configures the multiplexing number N and P of the bandwidth according to the CSI-RS configuration bandwidthcThe way of determining the parameter value r is similar to the way of determining the multiplexing times N and P of the network device according to the frequency band in step S501 of the embodiment shown in fig. 5cThe manner of determining the parameter value r is similar, for example, the difference lies in that the frequency band in step S501 in the embodiment shown in fig. 5 is replaced by the CSI-RS configuration bandwidth in the embodiment of the present application, and the rest of the contents may refer to the related description in step S501 in the embodiment shown in fig. 5, and are not described again here.
It should be noted that, in the example shown in fig. 16, the CSI-RS configuration bandwidth 2 includes a CSI-RS configuration bandwidth 1 as an example. Of course, the CSI-RS configuration bandwidth 2 may also be the same as the CSI-RS configuration bandwidth 1, which is not specifically limited in this embodiment of the application.
S1502, the network device sends indication information to the terminal device. Accordingly, the terminal device receives the indication information from the network device. And the indication information indicates power adjustment information corresponding to the CSI-RS configuration bandwidth.
In a possible implementation manner, the indication information in the embodiment of the present application includes location information of a CSI-RS configuration bandwidth and power adjustment information corresponding to the CSI-RS configuration bandwidth.
Optionally, the location information of the CSI-RS configuration bandwidth includes at least two of start frequency domain location information, end frequency domain location information, or size of the CSI-RS configuration bandwidth.
Since the CSI-RS configuration bandwidth may be regarded as a frequency band, the description of the size of the CSI-RS configuration bandwidth may refer to the description of the size of the frequency band in the brief introduction of the detailed description, and is not repeated herein. In addition, the description of the characterization manners related to the location information of the CSI-RS configuration bandwidth may refer to the description of the characterization manners related to the location information of the frequency band in the examples shown in fig. 9 to 12, which is not repeated herein.
In addition, the indication information in the embodiment of the present application may have a plurality of transmission modes.
In a possible implementation manner, the sending, by the network device, the indication information to the terminal device may include: the network equipment sends RRC signaling to the terminal equipment, and the RRC signaling comprises the indication information. Correspondingly, the receiving, by the terminal device, the indication information from the network device may include: the terminal device receives the RRC signaling from the network device.
For example, taking the example shown in fig. 16 as an example, it is assumed that the indication information includes location information of CSI-RS configuration bandwidth 1 and power adjustment information corresponding to CSI-RS configuration bandwidth 1, where the power adjustment information includes multiplexing number N of CSI-RS configuration bandwidth 1 or the network device configures bandwidth 1 according to CSI-RSThe parameter value r determined by the multiplexing times N or the multiplexing times N and P of the network equipment configuring the bandwidth 1 according to the CSI-RScThe determined parameter value r may include location information of the CSI-RS configuration bandwidth 1, and the multiplexing number N of the CSI-RS configuration bandwidth 1 or the parameter value r in the RRC signaling.
Or, in another possible implementation manner, the sending, by the network device, the indication information to the terminal device may include: the network device sends MAC-CE signaling to the terminal device, wherein the MAC-CE signaling comprises the indication information. Correspondingly, the receiving, by the terminal device, the indication information from the network device may include: the end device receives the MAC-CE signaling from the network device.
For example, taking the example shown in fig. 16 as an example, it is assumed that the indication information includes location information of CSI-RS configuration bandwidth 1 and power adjustment information corresponding to CSI-RS configuration bandwidth 1, where the power adjustment information includes multiplexing number N of CSI-RS configuration bandwidth 1 or parameter value r determined by the network device according to multiplexing number N of CSI-RS configuration bandwidth 1, or multiplexing numbers N and P of the network device according to CSI-RS configuration bandwidth 1cThe determined parameter value r may include the location information of the CSI-RS configuration bandwidth 1, the multiplexing number N of the CSI-RS configuration bandwidth 1, or the parameter value r in the MAC-CE signaling.
Or, in another possible implementation manner, the sending, by the network device, the indication information to the terminal device may include: and the network equipment sends DCI signaling to the terminal equipment, wherein the DCI signaling comprises the indication information. Correspondingly, the receiving, by the terminal device, the indication information from the network device may include: the terminal device receives the DCI signaling from the network device.
For example, taking the example shown in fig. 16 as an example, it is assumed that the indication information includes location information of CSI-RS configuration bandwidth 1 and power adjustment information corresponding to CSI-RS configuration bandwidth 1, where the power adjustment information includes multiplexing number N of CSI-RS configuration bandwidth 1 or parameter value r determined by the network device according to multiplexing number N of CSI-RS configuration bandwidth 1, or multiplexing numbers N and P of the network device according to CSI-RS configuration bandwidth 1cThe determined parameter value r, the DCI signaling may include location information of the CSI-RS configuration bandwidth 1 to determine a parameter value rAnd multiplexing times N of the CSI-RS configuration bandwidth 1 or the parameter value r.
Optionally, in this embodiment of the present application, if the network device determines that the number of multiplexing times N of a certain frequency band is 1, instead of indicating, to the terminal device, the number of multiplexing times N of the frequency band or a parameter value r (i.e., r ═ f (N)) determined by the network device according to the number of multiplexing times N of the frequency band, the terminal device may send P through RRC signaling according to the network device insteadcAnd adjusting the channel estimation of the frequency band according to an existing CSI-RS channel estimation adjustment manner, which is not specifically limited in this embodiment of the present application.
S1503, the terminal equipment adjusts the CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information corresponding to the CSI-RS configuration bandwidth.
The method for adjusting CSI-RS channel estimation of a CSI-RS configuration bandwidth by a terminal device according to power adjustment information corresponding to the CSI-RS configuration bandwidth is similar to that in step S503 in the embodiment shown in fig. 5, where the terminal device adjusts CSI-RS channel estimation of a frequency band corresponding to each of the terminal device according to a plurality of power adjustment information, for example, any one of the frequency bands in fig. 5 is replaced with the CSI-RS configuration bandwidth in the embodiment of the present application, and the rest of the contents may refer to the relevant description in step S503 in the embodiment shown in fig. 5, and are not described herein again.
Based on the power adjustment method provided by the embodiment of the application, since the indication information sent by the network device to the terminal device may indicate the power adjustment information corresponding to the CSI-RS configuration bandwidth, where the power adjustment information includes the multiplexing number N of the CSI-RS configuration bandwidth or a parameter value determined by the network device according to the multiplexing number N, where N is a positive integer, the terminal device may adjust the CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information, and therefore, the terminal device shares one P for the entire CSI-RS configuration bandwidth in the prior artcThe scheme for adjusting the CSI-RS channel estimation result can improve the accuracy of channel estimation when the CSI-RS is multiplexed.
The processor 301 in the network device 30 shown in fig. 3 may call the application code stored in the memory 302 to instruct the network device to perform the actions of the network device in the above steps S1501 to S1503, and the processor 401 in the terminal device 40 shown in fig. 3 may call the application code stored in the memory 402 to instruct the network device to perform the actions of the terminal device in the above steps S501 to S503, which is not limited in this embodiment.
In the embodiments and examples provided in the present application, the overlapping of CSI-RS configuration bandwidths is taken as an example for explanation. In addition, in addition to overlapping the CSI-RS configuration bandwidths corresponding to different terminal devices, the time domain resources of the CSI-RS corresponding to different terminal devices also need to overlap, that is, one or more REs of the CSI-RS corresponding to different terminal devices overlap, and the one or more REs may be continuous or discontinuous in the frequency domain. For example, the CSI-RS configuration bandwidth 1 and the CSI-RS configuration bandwidth 2 shown in fig. 16 are also overlapped in the time domain, as shown in fig. 17, wherein REs 1, REs 2, REs 3, and the like of the CSI-RS corresponding to the terminal device 1 and the CSI-RS corresponding to the terminal device 2 are overlapped REs, and REs 4 of the CSI-RS corresponding to the terminal device 2 is not overlapped with REs of the CSI-RS corresponding to the terminal device 1. Fig. 16 and other similar figures are only illustrated to facilitate understanding of the overlapping of frequency domain resources of CSI-RSs for different terminal devices. The description is applicable to all embodiments and examples provided in the present application, and is herein incorporated for brevity and will not be described in detail.
The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. Correspondingly, the embodiment of the application also provides a communication device, and the communication device is used for realizing the various methods. The communication device may be the terminal device in the above method embodiment, or a device including the above terminal device, or a component that can be used for the terminal device; alternatively, the communication device may be the network device in the above method embodiment, or a device including the above network device, or a component that can be used for the network device. It is to be understood that the communication device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to realize the above-mentioned functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiment of the present application, the communication apparatus may be divided into functional modules according to the method embodiments, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.
For example, the communication device is taken as the terminal device in the above method embodiment. Fig. 18 shows a schematic configuration of a terminal device 180. The terminal device 180 comprises a processing module 1801 and a transceiver module 1802. The transceiver module 1802, which may also be referred to as a transceiver unit, may be a transceiver circuit, a transceiver or a communication interface, for example, to implement transmitting and/or receiving functions.
In one possible implementation:
a transceiver module 1802 configured to receive indication information from a network device; the indication information is used for indicating power adjustment information of each of a plurality of frequency bands on the CSI-RS configuration bandwidth; the CSI-RS configuration bandwidth is configured for the terminal device 180 by the network device. A processing module 1801, configured to adjust CSI-RS channel estimates of respective corresponding frequency bands according to the multiple pieces of power adjustment information.
Optionally, the power adjustment information of each frequency band in the multiple frequency bands includes the number of multiplexing times N of the frequency band or a parameter value determined according to the number of multiplexing times N, where N is a positive integer. In one implementation, the network device determines the parameter value according to the number of multiplexing times N.
Optionally, the processing module 1801 is configured to adjust CSI-RS channel estimates of respective corresponding frequency bands according to the multiple pieces of power adjustment information, where the adjusting includes: and aiming at any frequency band in the multiple frequency bands, adjusting the CSI-RS channel estimation of the frequency band according to the multiplexing times N and the formula (1) or the formula (2).
Or, the processing module 1801 is configured to adjust CSI-RS channel estimates of respective corresponding frequency bands according to the multiple pieces of power adjustment information, where the adjusting module includes: and aiming at any frequency band in the plurality of frequency bands, adjusting the CSI-RS channel estimation of the frequency band according to the parameter value determined by the multiplexing times N and the formula (3).
In another possible implementation:
a transceiver module 1802 configured to receive indication information from a network device; the indication information is used for indicating power adjustment information corresponding to the CSI-RS configuration bandwidth; the CSI-RS configuration bandwidth is configured for the terminal device 180 by the network device. The power adjustment information comprises multiplexing times N of the CSI-RS configuration bandwidth or parameter values determined according to the multiplexing times N, wherein N is a positive integer; a processing module 1801, configured to adjust CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information. In one implementation, the network device determines the parameter value according to the number of multiplexing times N.
Optionally, the processing module 1801 is configured to adjust CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information, and includes: and the CSI-RS channel estimation module is configured to adjust CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the multiplexing number N of the CSI-RS configuration bandwidth and the formula (1) or the formula (2).
Or, optionally, the processing module 1801 is configured to adjust CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information, where the adjusting includes: and the channel estimation module is used for adjusting the CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the parameter value determined according to the multiplexing times N of the CSI-RS configuration bandwidth and the formula (3).
In the foregoing possible implementation manner, the transceiver module 1802 is configured to receive indication information from a network device, and includes: for receiving RRC signaling from the network device, the RRC signaling including the indication information; or, for receiving MAC-CE signaling from the network device, the MAC-CE signaling including the indication information; or, receiving DCI signaling from the network device, where the DCI signaling includes the indication information.
All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.
In the present embodiment, the terminal device 180 is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that provides the described functionality. In a simple embodiment, those skilled in the art will appreciate that the terminal device 180 may take the form of the terminal device 40 shown in fig. 3.
For example, the processor 401 in the terminal device 40 shown in fig. 3 may execute the instructions by calling a computer stored in the memory 402, so that the terminal device 40 executes the method for adjusting power in the above method embodiment.
Specifically, the functions/implementation procedures of the processing module 1801 and the transceiver module 1802 in fig. 18 may be implemented by the processor 401 in the terminal device 40 shown in fig. 3 calling a computer stored in the memory 402 to execute instructions. Alternatively, the function/implementation procedure of the processing module 1801 in fig. 18 may be implemented by the processor 401 in the terminal device 40 shown in fig. 3 calling a computer executing instruction stored in the memory 402, and the function/implementation procedure of the transceiver module 1802 in fig. 18 may be implemented by the transceiver 403 in the terminal device 40 shown in fig. 3.
Since the terminal device 180 provided in this embodiment can perform the above power adjustment method, the technical effects obtained by the terminal device can refer to the above method embodiment, and are not described herein again.
Or, for example, the communication device is taken as the network device in the above method embodiment. Fig. 19 shows a schematic structural diagram of a network device 190. The network device 190 includes a processing module 1901 and a transceiver module 1902. The transceiver module 1902, which may also be referred to as a transceiver unit, is used to implement a transmitting and/or receiving function, and may be, for example, a transceiver circuit, a transceiver, or a communication interface.
In a possible implementation manner, the processing module 1901 is configured to configure a CSI-RS configuration bandwidth for a terminal device, and determine power adjustment information of each of multiple frequency bands on the CSI-RS configuration bandwidth. The transceiver module 1902 is configured to send, to a terminal device, indication information, where the indication information is used to indicate power adjustment information of each of a plurality of frequency bands on the CSI-RS configured bandwidth.
In another possible implementation manner, the processing module 1901 is configured to configure a CSI-RS configuration bandwidth for the terminal device, and determine power adjustment information corresponding to the CSI-RS configuration bandwidth; the power adjustment information comprises multiplexing times N of the CSI-RS configuration bandwidth or parameter values determined according to the multiplexing times N, wherein N is a positive integer; the transceiver module 1902 is configured to send, to a terminal device, indication information, where the indication information is used to indicate power adjustment information corresponding to the CSI-RS configuration bandwidth.
In the foregoing possible implementation manner, the transceiver module 1802 is configured to send instruction information to a terminal device, and includes: the terminal equipment is used for sending RRC signaling to the terminal equipment, and the RRC signaling comprises indication information; or, the MAC-CE signaling is used for sending the MAC-CE signaling to the terminal equipment, and the MAC-CE signaling comprises the indication information; or, the method is used for sending DCI signaling to the terminal equipment, and the DCI signaling comprises indication information.
All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.
In the present embodiment, the network device 190 is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that provides the described functionality. In a simple embodiment, those skilled in the art will appreciate that the network device 190 may take the form of the network device 40 shown in FIG. 3.
For example, the processor 301 in the network device 30 shown in fig. 3 may execute the instructions by calling a computer stored in the memory 302, so that the network device 30 executes the method of power adjustment in the above method embodiment.
In particular, the functions/implementation procedures of the processing module 1901 and the transceiver module 1902 in fig. 19 may be implemented by the processor 301 in the network device 30 shown in fig. 3 calling the computer-executable instructions stored in the memory 302. Alternatively, the function/implementation procedure of the processing module 1901 in fig. 19 may be implemented by the processor 301 in the network device 30 shown in fig. 3 calling a computer executing instruction stored in the memory 302, and the function/implementation procedure of the transceiver module 1902 in fig. 19 may be implemented by the transceiver 303 in the network device 30 shown in fig. 3.
Since the network device 190 provided in this embodiment can perform the above power adjustment method, the technical effects obtained by the method can refer to the above method embodiment, and are not described herein again.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the present application are all or partially generated upon loading and execution of computer program instructions on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Reference to the literature
[1]H.Yin,D.Gesbert,M.Filippou and Y.Liu,“A coordinated approach to channel estimation in large-scale multiple-antenna systems,"IEEE Journal on Selected Areas in Communications,special issue on large-scale antenna systems,Vol.31,No.2,pp. 264-273,Feb.2013.
[2]H.Yin,L.Cottatellucci,and D.Gesbert,R.R.Müller,and G.He,“Robust pilot decontamination based on joint angle and power domain discrimination,"IEEE Transactions on Signal Processing,Vol.64,No.11,pp.2990-3003,Jun.2016。

Claims (28)

1. A method of power adjustment, comprising:
the terminal equipment receives indication information from the network equipment; the indication information is used for indicating power adjustment information of each of a plurality of frequency bands on a channel state information reference signal (CSI-RS) configuration bandwidth, the power adjustment information of any one of the frequency bands comprises the multiplexing times N of the frequency band or a parameter value determined according to the multiplexing times N, and N is a positive integer;
and the terminal equipment adjusts the CSI-RS channel estimation of the frequency band corresponding to each terminal equipment according to the power adjustment information.
2. The method of claim 1, wherein at least two of the plurality of power adjustment information are different.
3. The method of claim 2, wherein a part of or all of the plurality of frequency bands overlap with a CSI-RS configuration bandwidth configured by the network device for other terminal devices.
4. The method of claim 3, wherein the power adjustment information of the frequency band with the overlapping bandwidth with the CSI-RS configuration bandwidth configured by the network device for the other terminals is different from the power adjustment information of the frequency band without the overlapping bandwidth.
5. The method of claim 1, wherein the plurality of power adjustment information are the same.
6. The method of claim 5, wherein the same plurality of power adjustment information is different from initial power adjustment information.
7. The method of claim 5 or 6, wherein all of the plurality of frequency bands overlap with a CSI-RS configuration bandwidth configured by the network device for other terminal devices.
8. The method according to any of claims 1-7, wherein the indication information comprises location information of the plurality of frequency bands and power adjustment information of each of the plurality of frequency bands.
9. The method of claim 8, wherein the location information of the plurality of frequency bands comprises at least two of starting frequency domain location information, ending frequency domain location information, or size of each of the plurality of frequency bands.
10. The method according to any one of claims 1-9, wherein the terminal device receives indication information from a network device, comprising:
the terminal equipment receives Radio Resource Control (RRC) signaling from the network equipment, wherein the RRC signaling comprises the indication information;
or, the terminal device receives a media access control unit MAC-CE signaling from the network device, where the MAC-CE signaling includes the indication information;
or, the terminal device receives a downlink control information DCI signaling from the network device, where the DCI signaling includes the indication information.
11. The method of claim 1, wherein the adjusting, by the terminal device, CSI-RS channel estimates of respective corresponding frequency bands according to the plurality of power adjustment information includes:
aiming at any frequency band in the multiple frequency bands, the terminal equipment adjusts the CSI-RS channel estimation of the frequency band according to the multiplexing times N and a first formula as follows:
Figure FDA0003082877430000011
alternatively, the first and second electrodes may be,
Figure FDA0003082877430000012
wherein the content of the first and second substances,
Figure FDA0003082877430000013
denotes the adjusted channel estimation, H denotes the channel estimation before adjustment, N denotes the number of multiplexing of the band, P denotes the number of multiplexing of the bandcAnd the ratio of the power of the Physical Downlink Shared Channel (PDSCH) resource unit (RE) indicated by the network equipment to the power of the CSI-RS RE is represented.
12. The method of claim 1, wherein the adjusting, by the terminal device, CSI-RS channel estimates of respective corresponding frequency bands according to the plurality of power adjustment information comprises:
for any frequency band in the multiple frequency bands, the terminal device adjusts the CSI-RS channel estimation of the frequency band according to the parameter value determined by the multiplexing number N and a second formula as follows:
Figure FDA0003082877430000021
wherein the content of the first and second substances,
Figure FDA0003082877430000022
indicating the adjusted channel estimation, H indicating the channel estimation before the adjustment, r indicating the parameter value determined by the network device according to the multiplexing number N of the frequency band, r ═ f (N), g (r, Pc) indicating the terminal device according to the parameter values r and PcThe determined power adjustment value, N represents the multiplexing times of the frequency bandNumber, PcRepresents a ratio of a power of PDSCH REs indicated by the network device to a CSI-RS RE power.
13. A method of power adjustment, comprising:
the method comprises the steps that network equipment configures a channel state information reference signal (CSI-RS) configuration bandwidth for terminal equipment, and determines respective power adjustment information of a plurality of frequency bands on the CSI-RS configuration bandwidth, wherein the power adjustment information of any one of the frequency bands comprises the multiplexing times N of the frequency band or a parameter value determined according to the multiplexing times N, and N is a positive integer;
and the network equipment sends indication information to terminal equipment, wherein the indication information is used for indicating the power adjustment information of each of a plurality of frequency bands on the CSI-RS configuration bandwidth.
14. The method of claim 13, wherein the network device sends indication information to the terminal device, and wherein the indication information comprises:
the network equipment sends Radio Resource Control (RRC) signaling to the terminal equipment, wherein the RRC signaling comprises the indication information;
or, the network device sends a media access control unit MAC-CE signaling to the terminal device, where the MAC-CE signaling includes the indication information;
or, the network device sends a downlink control information DCI signaling to the terminal device, where the DCI signaling includes the indication information.
15. A method of power adjustment, comprising:
the terminal equipment receives indication information from the network equipment; the indication information is used for indicating power adjustment information corresponding to a channel state information reference signal (CSI-RS) configuration bandwidth; the power adjustment information comprises multiplexing times N of the CSI-RS configuration bandwidth or parameter values determined according to the multiplexing times N, wherein N is a positive integer;
and the terminal equipment adjusts the CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information.
16. The method of claim 15, wherein the CSI-RS configuration bandwidth completely overlaps with a configured CSI-RS configuration bandwidth of other terminals by the network device.
17. The method according to claim 15 or 16, wherein the terminal device receives indication information from a network device, comprising:
the terminal equipment receives Radio Resource Control (RRC) signaling from the network equipment, wherein the RRC signaling comprises the indication information;
or, the terminal device receives a media access control unit MAC-CE signaling from the network device, where the MAC-CE signaling includes the indication information;
or, the terminal device receives a downlink control information DCI signaling from the network device, where the DCI signaling includes the indication information.
18. A method of power adjustment, comprising:
the method comprises the steps that network equipment configures channel state information reference signal CSI-RS configuration bandwidth for terminal equipment and determines power adjustment information corresponding to the CSI-RS configuration bandwidth; the power adjustment information comprises multiplexing times N of the CSI-RS configuration bandwidth or parameter values determined according to the multiplexing times N, wherein N is a positive integer;
and the network equipment sends indication information to terminal equipment, wherein the indication information is used for indicating power adjustment information corresponding to the CSI-RS configuration bandwidth.
19. The method of claim 18, wherein the network device sends indication information to the terminal device, and wherein the indication information comprises:
the network equipment sends Radio Resource Control (RRC) signaling to the terminal equipment, wherein the RRC signaling comprises the indication information;
or, the network device sends a media access control unit MAC-CE signaling to the terminal device, where the MAC-CE signaling includes the indication information;
or, the network device sends a downlink control information DCI signaling to the terminal device, where the DCI signaling includes the indication information.
20. A communication device, comprising a processing module and a transceiver module;
the transceiver module is used for receiving indication information from network equipment; the indication information is used for indicating power adjustment information of each of a plurality of frequency bands on a channel state information reference signal (CSI-RS) configuration bandwidth, the power adjustment information of any one of the frequency bands comprises the multiplexing times N of the frequency band or a parameter value determined according to the multiplexing times N, and N is a positive integer; and the processing module is used for adjusting the CSI-RS channel estimation of the respective corresponding frequency band according to the plurality of power adjustment information.
21. The communication device according to claim 20, wherein the communication device is configured to implement the method according to any one of claims 1 to 13.
22. A communication device, comprising a processing module and a transceiver module;
the processing module is configured to configure a channel state information reference signal, CSI-RS, configuration bandwidth for a terminal device, and determine power adjustment information of each of a plurality of frequency bands on the CSI-RS configuration bandwidth, where the power adjustment information of any one of the plurality of frequency bands includes a multiplexing number N of the frequency band or a parameter value determined according to the multiplexing number N, where N is a positive integer;
the transceiver module is configured to send indication information to a terminal device, where the indication information is used to indicate power adjustment information of each of multiple frequency bands on the CSI-RS configuration bandwidth.
23. The communication device according to claim 22, wherein the communication device is configured to implement the method according to claim 14 or 15.
24. A communication device, comprising a processing module and a transceiver module;
the transceiver module is used for receiving indication information from network equipment; the indication information is used for indicating power adjustment information corresponding to a channel state information reference signal (CSI-RS) configuration bandwidth; the power adjustment information comprises multiplexing times N of the CSI-RS configuration bandwidth or parameter values determined according to the multiplexing times N, wherein N is a positive integer;
and the processing module is used for adjusting the CSI-RS channel estimation of the CSI-RS configuration bandwidth according to the power adjustment information.
25. A communication apparatus according to claim 24, wherein the communication apparatus is configured to implement the method of any one of claims 16 to 18.
26. A communication device, comprising a processing module and a transceiver module;
the processing module is used for configuring a channel state information reference signal (CSI-RS) configuration bandwidth for the terminal equipment and determining power adjustment information corresponding to the CSI-RS configuration bandwidth; the power adjustment information comprises multiplexing times N of the CSI-RS configuration bandwidth or parameter values determined by the network equipment according to the multiplexing times N, wherein N is a positive integer;
the transceiver module is configured to send indication information to a terminal device, where the indication information is used to indicate power adjustment information corresponding to the CSI-RS configuration bandwidth.
27. The communication device according to claim 26, wherein the communication device is configured to implement the method according to claim 19 or 20.
28. A computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1-12, or cause the computer to perform the method of any one of claims 13-14, or cause the computer to perform the method of any one of claims 15-17, or cause the computer to perform the method of any one of claims 18-19.
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