CN111865476A - Method and apparatus in a node used for wireless communication - Google Patents

Method and apparatus in a node used for wireless communication Download PDF

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Publication number
CN111865476A
CN111865476A CN201910337882.3A CN201910337882A CN111865476A CN 111865476 A CN111865476 A CN 111865476A CN 201910337882 A CN201910337882 A CN 201910337882A CN 111865476 A CN111865476 A CN 111865476A
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China
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reference signal
channel
node
time unit
power value
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CN201910337882.3A
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CN111865476B (en
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吴克颖
张晓博
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Shanghai Langbo Communication Technology Co Ltd
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Shanghai Langbo Communication Technology Co Ltd
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Priority to CN201910337882.3A priority Critical patent/CN111865476B/en
Priority to PCT/CN2020/082291 priority patent/WO2020216015A1/en
Publication of CN111865476A publication Critical patent/CN111865476A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • 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
    • 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
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L5/0057—Physical resource allocation for CQI

Abstract

A method and apparatus in a node used for wireless communication is disclosed. A first node receives a first reference signal in a first time unit; the first channel information is transmitted in a second time unit. Measurements for the first reference signal are used to generate the first channel information; the first channel information indicates a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block adopting the transmission mode corresponding to the first channel quality can be received by the first node at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal. The above method avoids ambiguity in understanding of CSI by two nodes due to transmission power variations when one node transmits a reference signal to another node in Sidelink.

Description

Method and apparatus in a node used for wireless communication
Technical Field
The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus related to a Sidelink (Sidelink) in wireless communication.
Background
In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of various application scenarios, research on New air interface technology (NR, New Radio) (or fine Generation, 5G) is decided on 3GPP (3rd Generation partnership project, third Generation partnership project) RAN (Radio Access Network) #72 sessions, and standardization Work on NR starts on 3GPP RAN #75 sessions where WI (Work Item ) of NR has passed.
The 3GPP has also started to initiate standards development and research work under the NR framework for the rapidly evolving Vehicle-to-evolution (V2X) service. The 3GPP has completed the work of making the requirements for the 5G V2X service and has written the standard TS 22.886. The 3GPP defines a 4-large application scenario group (Use Case Groups) for the 5G V2X service, including: automatic queuing Driving (Vehicles platform), Extended sensing (Extended Sensors), semi/full automatic Driving (Advanced Driving) and Remote Driving (Remote Driving). NR-based V2X technical research has been initiated over 3GPP RAN #80 congress.
Disclosure of Invention
Compared with the existing LTE (Long-term Evolution) V2X system, one notable feature of NRV2X is that it can support unicast function and support CSI (Channel-State Information) acquisition. The acquisition of CSI requires support of reference signals. In V2X, when the sending node of the reference signal changes the sending power of the reference signal for some reason, the receiving node of the reference signal may affect the calculation of the CSI, and even make the understanding of the obtained CSI ambiguous by the sending node and the receiving node of the reference signal.
In view of the above, the present application discloses a solution. It should be noted that, without conflict, the embodiments and features in the embodiments in the first node of the present application may be applied to the second node and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
The application discloses a method in a first node used for wireless communication, characterized by comprising:
receiving a first reference signal in a first time unit;
transmitting the first channel information in a second time unit;
Wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block employing the transmission mode corresponding to the first channel quality can be received by the first node at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
As an embodiment, the problem to be solved by the present application includes: how the CSI is calculated by the receiving node of the reference signal when the transmission power of the reference signal is dynamically changed, and how to avoid ambiguity in the understanding of the CSI by the transmitting node and the receiving node of the reference signal. The above method solves this problem by limiting the CSI to a certain average received power.
As an embodiment, the above method is characterized in that: the first channel quality is defined on the condition that the average received power is the first power value.
As an example, the above method has the benefits of: the calculation of the first channel quality by the first node is simplified.
As an example, the above method has the benefits of: ambiguities in the understanding of the first channel quality by the first node and the sender of the first reference signal are avoided.
As an example, the above method has the benefits of: the use of the first channel quality by the sender of the first reference signal is simplified.
According to one aspect of the application, the method is characterized by comprising the following steps:
receiving a second reference signal in a third time unit;
wherein the third time unit is prior to the first time unit, and the transmission power of the first reference signal and the second reference signal cannot be assumed to be the same; measurements for the second reference signal are used to generate the first channel information.
According to one aspect of the application, the method is characterized by comprising the following steps:
receiving a first signaling;
receiving a first wireless signal on a first data channel;
wherein the first signaling comprises configuration information of the first data channel, the configuration information of the first data channel comprising an MCS of the first wireless signal; the first reference signal is triggered by the first signaling.
According to one aspect of the present application, it is characterized in that the MCS of the first wireless signal and the first channel information together indicate the first channel quality.
According to one aspect of the application, the method is characterized by comprising the following steps:
sending a second signaling;
wherein the second signaling indicates time-frequency resources used for transmitting the first channel information.
According to an aspect of the application, it is characterized in that the reference power value is a linear average of the received power of said first reference signal on each RE, said first power value being related to said reference power value.
According to one aspect of the application, the method is characterized by comprising the following steps:
receiving first information;
wherein the first information indicates a first power offset, the first power value being determined by the reference power value in common with the first power offset.
According to one aspect of the application, the first node is a user equipment.
According to an aspect of the application, it is characterized in that the first node is a relay node.
The application discloses a method in a second node used for wireless communication, characterized by comprising:
Transmitting a first reference signal in a first time unit;
receiving the first channel information in a second time unit;
wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block adopting the transmission mode corresponding to the first channel quality can be received by a sender of the first channel information at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
According to one aspect of the application, the method is characterized by comprising the following steps:
transmitting a second reference signal in a third time unit;
wherein the third time unit is prior to the first time unit, and the transmission power of the first reference signal and the second reference signal cannot be assumed to be the same; measurements for the second reference signal are used to generate the first channel information.
According to one aspect of the application, the method is characterized by comprising the following steps:
sending a first signaling;
transmitting a first wireless signal on a first data channel;
wherein the first signaling comprises configuration information of the first data channel, the configuration information of the first data channel comprising an MCS of the first wireless signal; the first reference signal is triggered by the first signaling.
According to one aspect of the present application, it is characterized in that the MCS of the first wireless signal and the first channel information together indicate the first channel quality.
According to one aspect of the application, the method is characterized by comprising the following steps:
receiving a second signaling;
wherein the second signaling indicates time-frequency resources used for transmitting the first channel information.
According to an aspect of the application, it is characterized in that the reference power value is a linear average of the received power of said first reference signal on each RE, said first power value being related to said reference power value.
According to one aspect of the application, the method is characterized by comprising the following steps:
sending first information;
wherein the first information indicates a first power offset, the first power value being determined by the reference power value in common with the first power offset.
According to one aspect of the application, the second node is a user equipment.
According to an aspect of the application, it is characterized in that the second node is a relay node.
The application discloses a first node device used for wireless communication, characterized by comprising:
a first receiver that receives a first reference signal in a first time unit;
a first transmitter for transmitting the first channel information in a second time unit;
wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block employing the transmission mode corresponding to the first channel quality can be received by the first node at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
The present application discloses a second node device used for wireless communication, comprising:
a second transmitter that transmits the first reference signal in a first time unit;
a second receiver receiving the first channel information in a second time unit;
wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block adopting the transmission mode corresponding to the first channel quality can be received by a sender of the first channel information at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
As an example, compared with the conventional scheme, the method has the following advantages:
in the Sidelink, when one communication node transmits a reference signal to another communication node, the difficulty of CSI calculation of a receiving node of the reference signal caused by the change of the transmission power of the reference signal is avoided, and the CSI calculation is simplified.
In Sidelink, when one communication node transmits a reference signal to another communication node, ambiguity in understanding of CSI by a transmitting node and a receiving node of the reference signal due to a change in transmission power of the reference signal is avoided.
In sildelink, the use of the CQI reported for a reference signal by the sender of the reference signal is simplified.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof with reference to the accompanying drawings in which:
fig. 1 shows a flow diagram of a first reference signal and first channel information according to one embodiment of the present application;
FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;
figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;
FIG. 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;
FIG. 5 shows a flow diagram of a transmission according to an embodiment of the present application;
FIG. 6 shows a schematic diagram of a first time unit and a second time unit according to an embodiment of the present application;
Figure 7 shows a schematic diagram of a first reference resource block according to an embodiment of the present application;
FIG. 8 shows a schematic diagram of a first reference signal and a second reference signal according to an embodiment of the present application;
figure 9 shows a schematic diagram of first signaling according to an embodiment of the present application;
FIG. 10 shows a diagram of an MCS for a first wireless signal and first channel information together indicating a first channel quality according to one embodiment of the application;
figure 11 shows a schematic diagram of second signaling according to an embodiment of the present application;
FIG. 12 shows a schematic of a first power value and a reference power value according to an embodiment of the application;
FIG. 13 shows a schematic diagram of first information according to an embodiment of the present application;
FIG. 14 shows a block diagram of a processing apparatus for use in a first node device according to an embodiment of the present application;
fig. 15 shows a block diagram of a processing arrangement for a device in a second node according to an embodiment of the application.
Detailed Description
The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.
Example 1
Embodiment 1 illustrates a flowchart of a first reference signal and first channel information according to an embodiment of the present application, as shown in fig. 1. In 100 shown in fig. 1, each block represents a step. In particular, the order of steps in blocks does not represent a particular chronological relationship between the various steps.
In embodiment 1, the first node in the present application receives a first reference signal in a first time unit in step 101; the first channel information is transmitted in a second time unit in step 102. Wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block employing the transmission mode corresponding to the first channel quality can be received by the first node at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
For one embodiment, the first Reference Signal includes a SL RS (SideLink Reference Signal).
For one embodiment, the first reference signal includes a CSI-RS (Channel-State information references signal).
For one embodiment, the first reference signal includes a SL CSI-RS.
As one embodiment, the first Reference Signal includes an SRS (Sounding Reference Signal).
For one embodiment, the first reference signal includes a SL SRS.
As one embodiment, the first reference signal includes DMRS (DeModulation reference signals).
As one embodiment, the first reference signal comprises an SLDMRS.
As one embodiment, the first reference Signal includes SS (Synchronization Signal).
For one embodiment, the first reference signal comprises a SL SS.
As one embodiment, the first reference signal is transmitted on a SideLink (SideLink).
As an example, the first reference signal is transmitted through a PC5 interface.
As an embodiment, the first power value is used to generate the first channel information.
As one embodiment, the first Channel information includes CSI (Channel Status information).
As one embodiment, the first Channel information includes a CQI (Channel Quality Indicator).
As an embodiment, the first channel information includes a PMI (Precoding Matrix Indicator).
As an embodiment, the first channel information includes an RI (Rank Indicator).
As an embodiment, the first channel information includes CQI and RI.
For one embodiment, the first channel information includes RSRP (Reference Signal received power).
As one embodiment, the first channel information includes L1 (layer 1) -RSRP.
For one embodiment, the first channel information includes RSRQ (Reference Signal received quality).
As an embodiment, the first channel information is transmitted on a SideLink (SideLink).
As an example, the first channel information is transmitted through the PC5 interface.
As an embodiment, the first reference signal is one occurrence of a first type of reference signal in a time domain, and the first type of reference signal occurs multiple times in the time domain; the first reference signal is the latest occurrence of the reference signal of the first type not later than a first time instant, which is not later than a starting time instant of the second time unit used for determining the first time instant.
As a sub-embodiment of the above embodiment, the first node does not receive other occurrences of the first type of reference signal being different from the first reference signal between the first reference signal and the first channel information.
As a sub-embodiment of the above embodiment, the first node does not receive other occurrences of the first type of reference signal being different from the first reference signal between the first reference signal and the first time instant.
As a sub-embodiment of the above embodiment, a first reference signal resource is reserved for the first type of reference signal.
As an embodiment, the first node receives no other measurements between the first reference signal and the first channel information that are used to generate the reference signal for the first channel information.
As an embodiment, the first node does not receive, between the first reference signal and a first time instant, reference signals for which other measurements are used to generate the first channel information; the first time is no later than a starting time of the second time unit used to determine the first time.
As an embodiment, the time interval between the first instant of time and the start instant of the second time unit is fixed.
As an embodiment, the time interval between the first time instant and the start time instant of the second time unit is configurable.
For one embodiment, the first channel information includes the first channel quality.
As one embodiment, the first channel information is displayed to indicate the first channel quality.
As one embodiment, the first channel information implicitly indicates the first channel quality.
As one embodiment, the first channel quality is a CQI.
As one embodiment, the first channel quality is a CQI index (index).
In one embodiment, the first channel quality is a Modulation and Coding Scheme (MCS).
As one embodiment, the first channel quality is an MCS index (index).
As one embodiment, the first channel quality is RSRP.
As one embodiment, the first channel quality is RSRQ.
As an embodiment, the RE is a Resource Element.
As an embodiment, one of the REs occupies one multicarrier symbol in the time domain and one subcarrier in the frequency domain.
As an embodiment, the multicarrier symbol is an OFDM (Orthogonal Frequency division multiplexing) symbol.
As an embodiment, the multicarrier symbol is an SC-FDMA (Single Carrier-frequency division multiple access) symbol.
As one embodiment, the multi-carrier symbol is a DFT-S-OFDM (Discrete Fourier transform OFDM, Discrete Fourier transform orthogonal frequency division multiplexing) symbol.
As an embodiment, the first node assumes that the received power of the first bit block is the same on all occupied REs.
As an embodiment, the first node assumes that the received power of the first bit block on at least two occupied REs is not the same.
As an embodiment, when the first bit block occupies the first reference resource block and the average received power on each RE is the first power value, it means: when the first bit block occupies the first reference resource block and the average received power over occupied each RE is a first power value.
As an embodiment, when the first bit block occupies the first reference resource block and the average received power on each RE is not equal to the first power value, the first bit block in the transmission manner corresponding to the first channel quality cannot be assumed to be received by the first node with a transport block error rate not exceeding the first threshold.
As one embodiment, the first bit block includes a positive integer number of bits.
As an embodiment, the first bit Block comprises a Transport Block (TB).
As an embodiment, the first bit block is transmitted on a PSSCH (Physical Sidelink shared channel).
As an embodiment, the first bit block is transmitted on PUSCH (Physical Uplink Shared CHannel)).
As an embodiment, the sender of the first bit block is the sender of the first reference signal.
As an embodiment, the first bit block and the first reference signal are transmitted by the same antenna port.
As an example, the small-scale channel parameters experienced by the first bit block may be inferred from the small-scale channel parameters experienced by the first reference signal.
As an embodiment, the small-scale Channel parameters include one or more of CIR (Channel Impulse Response), PMI, CQI, RI.
As an example, the large-scale characteristics of the channel experienced by the first block of bits may be inferred from large-scale characteristics (large-scale characteristics) of the channel experienced by the first reference signal.
As an embodiment, the large scale characteristics include one or more of { delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), average gain (average gain), average delay (average delay), Spatial rx parameters }.
As an embodiment, the first bit block occupies only time-frequency resources within the first reference resource block.
As an embodiment, the first bit block does not occupy time-frequency resources not belonging to the first reference resource block.
As an embodiment, the first bit block occupies all time-frequency resources within the first reference resource block.
As an embodiment, the first bit block occupies only part of the time-frequency resources within the first reference resource block.
As an example, the unit of the first power value is watts (Watt).
As an example, the first power value has a unit of dBm (decibels).
As an embodiment, the first power value is a linear average of received power of the first reference signal on each occupied RE.
As an embodiment, the first power value is an RSRP of the first reference signal.
As an embodiment, the transport block error rate is transport block error probability.
As one embodiment, the first threshold is a positive real number less than 1.
As one embodiment, the first threshold is 0.1.
As one embodiment, the first threshold is 0.00001.
As one embodiment, the first threshold is 0.000001.
As one embodiment, the first threshold value is a positive real number not greater than 0.1 and not less than 0.000001.
As one embodiment, the first threshold is fixed.
For one embodiment, the first threshold is configurable.
As an embodiment, the first threshold is configured by a higher layer (higher layer) parameter.
As an embodiment, the first bit block being receivable by the first node at a transport block error rate not exceeding a first threshold means: the probability that the first block of bits is received in error by the first node does not exceed the first threshold.
As an embodiment, the first bit block being receivable by the first node at a transport block error rate not exceeding a first threshold means: a probability of the first bit block being incorrectly coded by the first node does not exceed the first threshold.
As an embodiment, the first bit block being receivable by the first node at a transport block error rate not exceeding a first threshold means: and the first node judges that the probability of decoding errors of the first bit block does not exceed the first threshold according to a Cyclic Redundancy Check (CRC) bit block of the first bit block.
As an embodiment, measurements for the first reference signal are used to determine the first power value.
As an embodiment, the transmission modes corresponding to the first channel quality include a modulation mode (modulation scheme), a target code rate (target code rate), and a transport block size (transport block size).
As an embodiment, the transmission mode corresponding to the first channel quality includes a modulation mode.
As an embodiment, the transmission manner corresponding to the first channel quality includes a target code rate.
As an embodiment, the transmission manner corresponding to the first channel quality includes a transport block size.
As an embodiment, the transmission mode corresponding to the first channel quality includes a modulation mode and a target code rate.
As an embodiment, the transmission mode corresponding to the first channel quality includes a modulation mode and a transport block size.
As an embodiment, the transmission manner corresponding to the first channel quality includes a target code rate and a transport block size.
As an embodiment, the first channel information is transmitted on a psch.
As one embodiment, the first channel information is transmitted on a PUSCH.
Example 2
Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in fig. 2.
Fig. 2 illustrates a network architecture 200 for LTE (Long-Term Evolution), LTE-a (Long-Term Evolution advanced, enhanced Long-Term Evolution), and future 5G systems. The network architecture 200 of LTE, LTE-a and future 5G systems is referred to as EPS (Evolved Packet System) 200. The EPS200 may include one or more UEs (user equipment) 201, and one UE241 in Sidelink (Sidelink) communication with the UE201, an NG-RAN (next generation radio access network) 202, a 5G-CN (5G-Core network)/EPC (evolved packet Core) 210, an HSS (Home Subscriber Server) 220, and an internet service 230. The EPS200 may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown in fig. 2, the EPS200 provides packet-switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit-switched services. The NG-RAN202 includes NR (new radio ) node bs (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gNB203 may be connected to other gnbs 204 via an X2 interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (point of transmission reception), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5G-CN/EPC 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a drone, an aircraft, a narrowband physical network device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5G-CN/EPC210 through an S1 interface. The 5G-CN/EPC210 includes an MME (Mobility Management Entity)/AMF (Authentication Management domain)/UPF (User Plane Function) 211, other MMEs/AMFs/UPFs 214, S-GW (Service Gateway) 212, and P-GW (packet data Network Gateway) 213. MME/AMF/UPF211 is a control node that handles signaling between UE201 and 5G-CN/EPC 210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW 213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP multimedia subsystem) and a Packet switching (Packet switching) service.
As an embodiment, the first node in the present application includes the UE 201.
As an embodiment, the second node in this application includes the UE 241.
As an embodiment, the first node in this application includes the UE 241.
As an embodiment, the second node in the present application includes the UE 201.
As an embodiment, the air interface between the UE201 and the gNB203 is a Uu interface.
For one embodiment, the air interface between the UE201 and the UE241 is a PC-5 interface.
For one embodiment, the wireless link between the UE201 and the gNB203 is a cellular network link.
As an embodiment, the wireless link between the UE201 and the UE241 is a Sidelink (Sidelink).
As an embodiment, the first node in this application and the second node in this application are respectively one terminal within the coverage of the gNB 203.
As an embodiment, the first node in this application is a terminal in the coverage of the gNB203, and the second node in this application is a terminal outside the coverage of the gNB 203.
As an embodiment, the first node in this application is a terminal outside the coverage of the gNB203, and the second node in this application is a terminal inside the coverage of the gNB 203.
As an embodiment, the first node in the present application and the second node in the present application are respectively a terminal outside the coverage of the gNB 203.
As an embodiment, Unicast (Unicast) transmission is supported between the UE201 and the UE 241.
As an embodiment, Broadcast (Broadcast) transmission is supported between the UE201 and the UE 241.
As an embodiment, the UE201 and the UE241 support multicast (Groupcast) transmission.
As an embodiment, the sender of the first reference signal in the present application includes the UE 201.
As an embodiment, the receiver of the first reference signal in this application includes the UE 241.
As an embodiment, the sender of the first reference signal in this application includes the UE 241.
As an embodiment, the receiver of the first reference signal in the present application includes the UE 201.
As an embodiment, the sender of the first channel information in this application includes the UE 241.
As an embodiment, the receiver of the first channel information in this application includes the UE 201.
As an embodiment, the sender of the first channel information in this application includes the UE 201.
As an embodiment, the receiver of the first channel information in this application includes the UE 241.
Example 3
Embodiment 3 illustrates a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application, as shown in fig. 3.
Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the UE and the gNB in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY 301. In the user plane, the L2 layer 305 includes a MAC (media access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gNB on the network side. Although not shown, the UE may have several protocol layers above the L2 layer 305, including a network layer (e.g., IP layer) that terminates at the P-GW213 on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.). The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides header compression for upper layer packets to reduce radio transmission overhead, security by ciphering the packets, and handover support for UEs between gnbs. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ (hybrid automatic Repeat reQuest). The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for the physical layer 301 and the L2 layer 305, but without the header compression function for the control plane. The Control plane also includes an RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configures the lower layers using RRC signaling between the gNB and the UE.
As an example, the wireless protocol architecture in fig. 3 is applicable to the first node in this application.
As an example, the radio protocol architecture in fig. 3 is applicable to the second node in this application.
As an embodiment, the first reference signal in this application is generated in the PHY 301.
As an embodiment, the first channel information in this application is generated in the PHY 301.
As an embodiment, the second reference signal in this application is generated in the PHY 301.
As an embodiment, the first signaling in this application is generated in the PHY 301.
As an example, the first wireless signal in this application is generated in the PHY 301.
As an embodiment, the second signaling in this application is generated in the PHY 301.
As an embodiment, the first information in this application is generated in the PHY 301.
As an embodiment, the first information in this application is generated in the MAC sublayer 302.
As an embodiment, the first information in this application is generated in the RRC sublayer 306.
Example 4
Embodiment 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in fig. 4. Fig. 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.
The first communications device 410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multiple antenna receive processor 472, a multiple antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.
The second communications device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.
In the transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer data packets from the core network are provided to the controller/processor 475. The controller/processor 475 implements the functionality of layer L2. In the DL, the controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the second communication device 450 based on various priority metrics. The controller/processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 450, as well as constellation mapping based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook based precoding, and beamforming processing on the coded and modulated symbols to generate one or more parallel streams. Transmit processor 416 then maps each parallel stream to subcarriers, multiplexes the modulated symbols with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels carrying the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.
In a transmission from the first communications device 410 to the second communications device 450, at the second communications device 450, each receiver 454 receives a signal through its respective antenna 452. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456. Receive processor 456 and multi-antenna receive processor 458 implement the various signal processing functions of the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. Receive processor 456 converts the baseband multicarrier symbol stream after the receive analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any parallel streams destined for the second communication device 450. The symbols on each parallel stream are demodulated and recovered in a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channel. The upper layer data and control signals are then provided to a controller/processor 459. The controller/processor 459 implements the functionality of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In the DL, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer data packets from the core network. The upper layer packet is then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing. The controller/processor 459 is also responsible for error detection using an Acknowledgement (ACK) and/or Negative Acknowledgement (NACK) protocol to support HARQ operations.
In a transmission from the second communications device 450 to the first communications device 410, a data source 467 is used at the second communications device 450 to provide upper layer data packets to a controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit function at the first communications apparatus 410 described in the DL, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the first communications apparatus 410, implementing L2 layer functions for the user plane and the control plane. The controller/processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to said first communications device 410. A transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding by a multi-antenna transmit processor 457 including codebook-based precoding and non-codebook based precoding, and beamforming, and the resulting parallel streams are then modulated by the transmit processor 468 into multi-carrier/single-carrier symbol streams, subjected to analog precoding/beamforming in the multi-antenna transmit processor 457, and provided to different antennas 452 via a transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides the radio frequency symbol stream to the antenna 452.
In a transmission from the second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to the receiving functionality at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives an rf signal through its respective antenna 420, converts the received rf signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functionality of the L1 layer. Controller/processor 475 implements the L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. The controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the second communication device 450. Upper layer data packets from the controller/processor 475 may be provided to a core network. Controller/processor 475 is also responsible for error detection using the ACK and/or NACK protocol to support HARQ operations.
As an embodiment, the second communication device 450 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 450 apparatus at least: receiving the first reference signal in the present application in the first time unit in the present application; transmitting the first channel information in the present application in the second time unit in the present application. Wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block employing the transmission mode corresponding to the first channel quality can be received by the second communication device 450 with a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
As an embodiment, the second communication device 450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving the first reference signal in the present application in the first time unit in the present application; transmitting the first channel information in the present application in the second time unit in the present application. Wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block employing the transmission mode corresponding to the first channel quality can be received by the second communication device 450 with a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
As an embodiment, the first communication device 410 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The first communication device 410 means at least: transmitting the first reference signal in the present application in the first time unit in the present application; receiving the first channel information in the present application in the second time unit in the present application. Wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block adopting the transmission mode corresponding to the first channel quality can be received by a sender of the first channel information at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
As an embodiment, the first communication device 410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: transmitting the first reference signal in the present application in the first time unit in the present application; receiving the first channel information in the present application in the second time unit in the present application. Wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block adopting the transmission mode corresponding to the first channel quality can be received by a sender of the first channel information at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
As an embodiment, the second node in this application comprises the first communication device 410.
As an embodiment, the first node in this application comprises the second communication device 450.
As one example, at least one of the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, the memory 460, the data source 467 is used to receive the first reference signal in the first time unit in the present application; at least one of the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, the memory 476 is used to transmit the first reference signal in this application in the first time unit in this application.
As an example, at least one of { the antenna 420, the receiver 418, the reception processor 470, the multi-antenna reception processor 472, the controller/processor 475, the memory 476} is used to receive the first channel information in the present application in the second time unit in the present application; { the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller/processor 459, the memory 460, the data source 467}, at least one of which is used to transmit the first channel information in this application in the second time unit in this application.
As one example, at least one of { the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, the memory 460, the data source 467} is used to receive the second reference signal in this application in the third time cell in this application; at least one of { the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, the memory 476 }' is used to transmit the second reference signal in this application in the third time cell in this application.
As one example, at least one of the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, the memory 460, the data source 467 is used to receive the first signaling in this application; at least one of the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, the memory 476 is used to transmit the first signaling in this application.
As one example, at least one of the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, the memory 460, the data source 467 is configured to receive the first wireless signal of the present application on the first data channel of the present application; at least one of the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, the memory 476 is used to transmit the first wireless signal of the present application on the first data channel of the present application.
As an example, at least one of { the antenna 420, the receiver 418, the receive processor 470, the multi-antenna receive processor 472, the controller/processor 475, the memory 476} is used to receive the second signaling in this application; { the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller/processor 459, the memory 460, the data source 467}, at least one of which is used to send the second signaling in this application.
As one example, at least one of { the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, the memory 460, the data source 467} is used to receive the first information in this application; at least one of the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, the memory 476 is used to transmit the first information in this application.
Example 5
Embodiment 5 illustrates a flow chart of wireless transmission according to an embodiment of the present application, as shown in fig. 5. In fig. 5, the second node U1 and the first node U2 are communication nodes that transmit over an air interface. In fig. 5, the steps in blocks F51 through F55, respectively, are optional.
The second node U1, transmitting the second reference signal in the third time unit in step S5101; transmitting a first signaling in step S5102; transmitting the first information in step S5103; transmitting a first wireless signal on a first data channel in step S5104; transmitting a first reference signal in a first time unit in step S511; receiving a second signaling in step S5105; the first channel information is received in a second time unit in step S512.
The first node U2, receiving the second reference signal in the third time unit in step S5201; receiving a first signaling in step S5202; receiving the first information in step S5203; receiving a first wireless signal on a first data channel in step S5204; receiving a first reference signal in a first time unit in step S521; transmitting a second signaling in step S5205; the first channel information is transmitted in a second time unit in step S522.
In embodiment 5, measurements for the first reference signal are used by the first node U2 to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block employing the transmission mode corresponding to the first channel quality can be received by the first node at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
As one example, the steps in blocks F52 and F54 in FIG. 5 may or may not be present at the same time.
As an example, the first node U2 is the first node in this application.
As an example, the second node U1 is the second node in this application.
For one embodiment, the air interface between the second node U1 and the first node U2 is a PC5 interface.
As an embodiment, the air interface between the second node U1 and the first node U2 includes a Sidelink (Sidelink).
For one embodiment, the air interface between the second node U1 and the first node U2 comprises a wireless interface between user equipment and user equipment.
As an embodiment, the air interface between the second node U1 and the first node U2 comprises a wireless interface between a user equipment and a relay node.
For one embodiment, the air interface between the second node U1 and the first node U2 is a Uu interface.
For one embodiment, the air interface between the second node U1 and the first node U2 includes a Downlink (Downlink) and an Uplink (Uplink).
As an embodiment, the third time unit is prior to the first time unit, and the transmission power of the first reference signal and the second reference signal cannot be assumed to be the same; the measurements for the second reference signal are used by the first node U2 to generate the first channel information.
As one embodiment, the first signaling includes configuration information of the first data channel, the configuration information of the first data channel including an MCS of the first wireless signal; the first reference signal is triggered by the first signaling.
As one embodiment, the MCS of the first wireless signal and the first channel information together indicate the first channel quality.
As an embodiment, the second signaling indicates time-frequency resources used for transmitting the first channel information.
As an embodiment, the reference power value is a linear average of received power of the first reference signal on each RE, and the first power value is related to the reference power value.
As an embodiment, the first information indicates a first power offset, and the first power value is determined by the reference power value and the first power offset together.
As an embodiment, the first node in this application is a terminal.
As an embodiment, the second node in this application is a terminal.
As an example, the first node in the present application is an automobile.
As an example, the first node in the present application is a vehicle.
As an example, the first node in this application is an RSU (Road Side Unit).
As an example, the second node in the present application is an automobile.
As an example, the second node in this application is a vehicle.
As an embodiment, the second node in this application is an RSU.
As an embodiment, the first signaling is transmitted on a PSCCH (Physical Sidelink Control Channel).
As an embodiment, the first signaling is transmitted on a PUCCH (Physical Uplink Control CHannel).
As one embodiment, the first wireless signal is transmitted on a psch.
As one embodiment, the first wireless signal is transmitted on a PUSCH.
As an embodiment, the second signaling is transmitted on the PSCCH.
As an embodiment, the second signaling is transmitted on a PUCCH.
As an embodiment, the first information is transmitted on the PSCCH.
As one embodiment, the first information is transmitted on a PUCCH.
As an embodiment, the first information is transmitted on a psch.
As one embodiment, the first information is transmitted on a PUSCH.
Example 6
Embodiment 6 illustrates a schematic diagram of a first time unit and a second time unit according to an embodiment of the present application; as shown in fig. 6. In embodiment 6, the first node in this application receives the first reference signal in this application in the first time unit, and transmits the first channel information in this application in the second time unit.
As an embodiment, the first time unit and the second time unit are each one continuous time period.
As an embodiment, the first time unit and the second time unit each include a positive integer number of multicarrier symbols.
As an embodiment, the first time unit and the second time unit each comprise a positive integer number of consecutive multicarrier symbols.
As an embodiment, the first time unit and the second time unit are the same length.
As an embodiment, the first time unit and the second time unit are different in length.
As an embodiment, the first time unit and the second time unit belong to one slot (slot), respectively.
As one embodiment, the first time unit and the second time unit respectively belong to one subframe (sub-frame).
As an embodiment, the first time unit and the second time unit are each a time slot.
As an embodiment, the first time unit and the second time unit are each one subframe.
As one embodiment, the first time unit precedes the second time unit.
As an embodiment, the first time unit precedes the second time unit, the second time unit being associated to the first time unit.
As an embodiment, the slot to which the second time unit belongs is a kth slot after the slot to which the first time unit belongs, and k is a non-negative integer.
As an embodiment, the subframe to which the second time unit belongs is a kth subframe after the subframe to which the first time unit belongs, and k is a non-negative integer.
As one embodiment, k is greater than 0.
As an example, k is equal to 0.
As one example, k is a constant.
For one embodiment, k is configurable.
As an embodiment, the k is configured by a higher layer (higher layer) parameter.
As one embodiment, the k is dynamically configured.
As an embodiment, the first signaling in this application indicates the k.
Example 7
Embodiment 7 illustrates a schematic diagram of a first reference resource block according to an embodiment of the present application; as shown in fig. 7. In embodiment 7, the measurement for the first reference signal in the present application is used to generate the first channel information in the present application; the first channel information is used to indicate the first channel quality in the present application; when the first bit block occupies the first reference resource block and the average received power on each RE is the first power value in the present application, the first bit block adopting the transmission mode corresponding to the first channel quality in the present application can be received by the first node in the present application at a transport block error rate not exceeding the first threshold in the present application. The first power value relates to a measurement for the first reference signal.
As an embodiment, the first reference resource block is a CSI reference resource (reference resource) corresponding to the first channel information.
As an embodiment, the first reference resource block is a CSI reference resource corresponding to the first channel quality.
For an embodiment, the specific definition of the CSI reference resource is described in 3gpp ts 38.214.
As an embodiment, the first reference resource block includes a positive integer number of REs.
As an embodiment, the first reference resource block includes a positive integer number of multicarrier symbols in a time domain.
As an embodiment, the first reference resource block includes one slot (slot) in a time domain.
As one embodiment, the first reference resource block includes one sub-frame in a time domain.
As an embodiment, the first reference resource block includes a positive integer number of subcarriers in a frequency domain.
As an embodiment, the first reference resource block includes a positive integer number of PRBs (physical resource blocks) in a frequency domain.
As an embodiment, the frequency domain resources of the first reference signal are used to determine the frequency domain resources of the first reference resource block.
As an embodiment, the frequency domain resources of the first reference resource block are associated to the frequency domain resources of the first reference signal.
As an embodiment, the frequency domain resources of the first reference resource block and the first reference signal belong to a same frequency band (band).
As an embodiment, the frequency domain resources of the first reference resource block and the first reference signal belong to the same Carrier (Carrier).
As an embodiment, the frequency domain resources of the first reference resource block and the first reference signal belong to the same BWP (Bandwidth Part).
As an embodiment, the first reference resource block and the first reference signal occupy the same PRB in the frequency domain.
As an embodiment, the time domain location of the first reference resource block is related to the second time unit in this application.
As an embodiment, the second time unit is used to determine a time domain location of the first reference resource block.
As an embodiment, the first reference resource block is located before the second time unit in a time domain.
As an embodiment, the first reference resource block and the second time unit belong to the same time slot in a time domain.
As an embodiment, the first reference resource block and the second time unit belong to different time slots in a time domain.
As an embodiment, the first reference resource block belongs to a target time unit in the time domain, the target time unit being earlier than a reference time unit, the second time unit being used for determining the reference time unit; the time interval between the target time unit and the reference time unit is a first interval.
As a sub-embodiment of the above embodiment, the target time unit and the reference time unit are each a time slot.
As a sub-embodiment of the above embodiment, the target time unit and the reference time unit are each a subframe.
As a sub-embodiment of the above embodiment, the reference time unit is the second time unit.
As a sub-embodiment of the above embodiment, the reference time unit is a time slot to which the second time unit belongs.
As a sub-embodiment of the above embodiment, the second time unit is a time slot n1, the reference time unit is a time slot n, the n is equal to a product of n1 and a first ratio rounded down, the first ratio is a ratio between 2 raised to the power of a first value and 2 raised to the power of a second value, the first value is a subcarrier spacing configuration (subcarrier spacing configuration) corresponding to the first channel information, and the second value is a subcarrier spacing configuration corresponding to the first reference signal.
As a sub-embodiment of the above embodiment, the first interval is a non-negative integer.
As a sub-embodiment of the above embodiment, the unit of the first interval is a slot (slot).
As a sub-embodiment of the above embodiment, the first interval is not less than a third value and is such that the first time unit in the present application is a value of a time slot that can be used by the sender of the first reference signal to transmit wireless signals to the first node.
As a reference example of the foregoing sub-embodiments, the third value is related to a subcarrier spacing configuration corresponding to the first reference signal.
As a reference example of the above-described sub-embodiments, the third value is related to a delay requirement (delayrequirement).
As an example, rounding down a given value is equal to the largest integer not greater than the given value.
As an embodiment, the first reference resource block is located after the second time unit in a time domain.
As an embodiment, the first reference resource block and the second time unit belong to the same slot.
As an embodiment, when the second time unit and the first signaling in this application belong to the same time slot in a time domain, the first reference resource block and the first signaling belong to the same time slot.
Example 8
Embodiment 8 illustrates a schematic diagram of a first reference signal and a second reference signal according to an embodiment of the present application; as shown in fig. 8. In embodiment 8, the first node in this application receives the first reference signal and the second reference signal in the first time unit and the third time unit in this application, respectively; the third time unit is prior to the first time unit, and the transmission power of the first reference signal and the second reference signal cannot be assumed to be the same; measurements for the first reference signal and the second reference signal are used to generate the first channel information in this application.
As an example, the third time unit is a continuous time period.
As an embodiment, the third time unit comprises a positive integer number of multicarrier symbols.
As an embodiment, the third time unit comprises a positive integer number of consecutive multicarrier symbols.
As an embodiment, the third time unit belongs to one time slot.
As an embodiment, the third time unit belongs to one subframe.
As an embodiment, the third time unit is a time slot.
As an embodiment, the third time unit is a subframe.
As an embodiment, the end time of the third time unit is earlier than the start time of the first time unit.
As an embodiment, the first reference signal and the second reference signal are respectively two occurrences of the first type of reference signal in a time domain.
As one embodiment, the second reference signal is transmitted on a SideLink (SideLink).
As an example, the second reference signal is transmitted through a PC5 interface.
As an embodiment, the transmission power of the first reference signal and the second reference signal is the same.
As an embodiment, the first reference signal and the second reference signal have different transmit powers.
As an embodiment, the average received power of the first reference signal and the second reference signal on each occupied RE is the same.
As an embodiment, the average received power of the first reference signal and the second reference signal on each occupied RE is different.
As an example, the first power value in this application is independent of the measurement for the second reference signal.
As an embodiment, the first reference signal and the second reference signal are the same sender.
As an embodiment, the transmitter of the first reference signal and the second reference signal adjusts the transmit power between the third time unit and the first time unit.
As one embodiment, the first node performs joint channel estimation for the first reference signal and the second reference signal to determine the first channel information.
As one embodiment, the first node performs joint channel estimation for the first reference signal and the second reference signal to determine parameters of a wireless channel experienced by the first bit block on the first reference resource block.
As an embodiment, the first node performs joint channel estimation for the first reference signal and the second reference signal to determine parameters of a wireless channel experienced by the first bit block on the first reference resource block, based on the assumption that the received power of the first reference signal is the same as the received power of the second reference signal.
As an embodiment, the first node performs channel estimation on the first reference signal and the second reference signal to obtain a first channel parameter and a second channel parameter, respectively; multiplying the first channel parameter and the second channel parameter by a first coefficient and a second coefficient respectively to obtain a first normalized channel parameter and a second normalized channel parameter, wherein the first coefficient and the second coefficient are positive real numbers respectively; interpolating the first normalized channel parameter and the second normalized channel parameter to obtain a normalized channel parameter of a wireless channel experienced by the first bit block on the first reference resource block; recovering parameters of a wireless channel experienced by the first bit block on the first reference resource block according to the first power value.
As an embodiment, parameters of a wireless channel experienced by the first bit block on the first reference resource block are used for generating the first channel information.
Example 9
Embodiment 9 illustrates a schematic diagram of a first signaling according to an embodiment of the present application; as shown in fig. 9. In embodiment 9, the first signaling includes configuration information of the first data channel in the present application, the configuration information of the first data channel including an MCS of the first wireless signal in the present application; the first reference signal in this application is triggered by the first signaling.
As an embodiment, the first signaling is transmitted by multicast (Groupcast).
As an embodiment, the first signaling is Unicast (Unicast) transmission.
As an embodiment, the first signaling is user equipment-specific (UE-specific).
As an embodiment, the first signaling is dynamic signaling.
As one embodiment, the first signaling is layer 1(L1) signaling.
As an embodiment, the first signaling is layer 1(L1) control signaling.
As an embodiment, the first signaling includes SCI (Sidelink Control Information).
As an embodiment, the first signaling includes one or more fields in one SCI.
As an embodiment, the first signaling is transmitted on a SideLink (SideLink).
As an embodiment, the first signaling is transmitted through a PC5 interface.
As an embodiment, the triggering of the first reference signal by the first signaling comprises: the first reference signal is also not transmitted if the first signaling is not transmitted.
As an embodiment, the triggering of the first reference signal by the first signaling comprises: the first signaling includes configuration information of the first reference signal.
As an embodiment, the configuration information of the first reference signal includes: one or more of occupied time domain resources, occupied frequency domain resources, occupied Code domain resources, RS sequences, mapping modes, cyclic shift amount (cyclic shift), OCC (Orthogonal Code), spreading sequences in frequency domain or spreading sequences in time domain.
As an embodiment, the triggering of the first reference signal by the first signaling comprises: the first signaling indicates first reference signal resources reserved for the first class of reference signals, which are one occurrence of the first class of reference signals in the time domain.
As a sub-embodiment of the above embodiment, the first signaling indicates an index of the first reference signal resource.
As a sub-embodiment of the foregoing embodiment, the first signaling indicates an index of first CSI reporting configuration information, where the first CSI reporting configuration information is CSI reporting configuration information corresponding to the first channel information, and the first CSI reporting configuration information indicates the index of the first reference signal resource.
As an embodiment, the sending of the first channel information is triggered by the first signaling.
As an embodiment, if the first node does not receive the first signaling, the first node does not send the first channel information.
As one embodiment, the first signaling indicates the second time unit.
As an embodiment, the first signaling indicates a time interval between the second time unit and the first time unit.
As an embodiment, the first signaling and the second time unit belong to the same time slot in a time domain.
As an embodiment, the first signaling and the second time unit belong to different time slots in a time domain.
As an embodiment, the first signaling indicates frequency domain resources used for transmitting the first channel information.
As an embodiment, the indication of the first signaling display is used for transmitting frequency domain resources of the first channel information.
As an embodiment, the implicit indication of the first signaling is used for frequency domain resources for transmitting the first channel information.
As an embodiment, the configuration information of the first data channel includes occupied time-frequency resources.
For one embodiment, the first data channel is a physical layer channel.
As one embodiment, the first data channel is a sidelink (sidelink) channel.
As an embodiment, the first data channel is a multicast (Groupcast) channel.
As one embodiment, the first data channel is a Unicast (Unicast) channel.
As an embodiment, the first data channel is a psch.
As one embodiment, the first data channel is a PUSCH.
As an embodiment, the first data channel and the first signaling belong to the same time slot in a time domain.
As an embodiment, the first data channel and the first signaling belong to different time slots in a time domain.
As an embodiment, the first data channel and the first time unit belong to the same time slot in a time domain.
As an embodiment, the first data channel and the first time unit belong to different time slots in a time domain.
As an embodiment, the first data channel and the first reference signal belong to the same Carrier (Carrier) in a frequency domain.
As an embodiment, the first data channel and the first reference signal belong to the same BWP in the frequency domain.
As one embodiment, the first signaling indicates the first time unit.
As one embodiment, the first signaling is displayed indicating the first time unit.
As one embodiment, the first signaling implicitly indicates the first time unit.
As an embodiment, the time domain resource occupied by the first signaling indicates the first time unit.
As an embodiment, the time domain resource occupied by the first signaling indicates the first time unit implicitly.
As an embodiment, the first time unit and the first signaling belong to the same time slot in a time domain.
As an embodiment, the first time unit and the first signaling belong to different time slots in a time domain.
Example 10
Embodiment 10 illustrates a diagram in which the MCS of the first wireless signal and the first channel information together indicate the first channel quality according to an embodiment of the present application; as shown in fig. 10.
As an embodiment, the linear average of the received power of the first radio signal on each RE is the same as the linear average of the received power of the first reference signal on each RE.
As an embodiment, the linear average of the received power of the first radio signal on each RE and the linear average of the received power of the first reference signal on each RE are different.
As one embodiment, the first wireless signal and the first reference signal are transmitted by the same antenna port.
As one embodiment, the first wireless signal and the first reference signal are transmitted by different antenna ports.
As one embodiment, an MCS index (index) of the first wireless signal and the first channel information together indicate the first channel quality.
As an embodiment, the first channel quality is an MCS index; the first channel information includes a first offset, and the first channel quality is a sum of the first offset and an MCS index of the first wireless signal.
As an embodiment, the first channel quality is an MCS index; the first channel information includes a first offset, and the first channel quality is a difference of an MCS index of the first wireless signal and the first offset.
As an embodiment, the first channel quality is a CQI index; the first channel information includes a first offset, and the first channel quality is a sum of the first offset and an MCS index of the first wireless signal.
As one embodiment, the first offset is a non-negative integer.
Example 11
Embodiment 11 illustrates a schematic diagram of second signaling according to an embodiment of the present application; as shown in fig. 11. In embodiment 11, the second signaling indicates a time-frequency resource used for transmitting the first channel information in the present application.
As an embodiment, the second signaling is transmitted by multicast (Groupcast).
As an embodiment, the second signaling is Unicast (Unicast) transmission.
As an embodiment, the second signaling is user equipment-specific (UE-specific).
As an embodiment, the second signaling is dynamic signaling.
As one embodiment, the second signaling is layer 1(L1) signaling.
As an embodiment, the second signaling is layer 1(L1) control signaling.
For one embodiment, the second signaling includes SCI.
As an embodiment, the second signaling comprises one or more fields in one SCI.
As an embodiment, the second signaling is transmitted on a SideLink (SideLink).
As an embodiment, the second signaling is transmitted through a PC5 interface.
As an embodiment, the first channel information is transmitted on a first psch, and the second signaling includes configuration information of the first psch.
As a sub-embodiment of the foregoing embodiment, the configuration information of the first PSSCH includes occupied time-frequency resources.
As a sub-embodiment of the above embodiment, the configuration information of the first psch includes an MCS.
As an embodiment, the second signaling includes information required to receive the first channel information.
As an embodiment, the second signaling indicates the second time unit.
As an embodiment, the second signaling indicates the second time unit.
As an embodiment, the second signaling implicitly indicates the second time unit.
As an embodiment, the second signaling and the second time unit belong to the same time slot.
As an embodiment, the second signaling and the second time unit belong to different time slots.
As an embodiment, the second signaling indicates frequency domain resources used for transmitting the first channel information.
As an embodiment, the indication displayed by the second signaling is used for transmitting frequency domain resources of the first channel information.
As an embodiment, the implicit indication of the second signaling is used for frequency domain resources for transmitting the first channel information.
Example 12
Example 12 illustrates a schematic of a first power value and a reference power value according to one embodiment of the present application; as shown in fig. 12. In embodiment 12, the reference power value is a linear average of received power of the first reference signal on each RE in the present application, and the first power value is related to the reference power value.
As an example, the unit of the reference power value is watts (Watt).
As an embodiment, the reference power value is a linear average of received power of the first reference signal on each occupied RE.
As an embodiment, the reference power value is an RSRP of the first reference signal.
As an example, the first power value is in units of watts, and the first power value is equal to the reference power value.
As an example, the first power value is in dBm, and the first power value is equal to a value obtained by converting the reference power value into dBm.
As an example, the first power value and the reference power value are linearly related.
As an embodiment, the first power value and the reference power value are related to a first precoding matrix.
As an embodiment, the first precoding matrix is preconfigured.
As an embodiment, the first precoding matrix is configured by a higher layer (higher layer) parameter.
As one embodiment, the first precoding matrix is of a semi-static (semi-static) configuration.
As one embodiment, the first precoding matrix is dynamically configured.
As an embodiment, the first precoding matrix is selected by the first node from a first codebook, the first codebook includes a positive integer of candidate precoding matrices, and the first precoding matrix is a candidate precoding matrix in the first codebook.
As a sub-embodiment of the above embodiment, the first codebook is predefined.
As a sub-embodiment of the above embodiment, the first codebook is configured by a higher layer (higher layer) parameter.
As a sub-embodiment of the above-described embodiment, the first codebook is of a semi-static (semi-static) configuration.
As an embodiment, the first channel information comprises a first integer, the first precoding matrix is related to the first integer, and the first integer is a positive integer.
As a sub-embodiment of the above embodiment, the first integer is a rank (rank) of the first precoding matrix.
As a sub-embodiment of the above embodiment, the number of column vectors of the first precoding matrix is equal to the first integer.
As a sub-embodiment of the above embodiment, the first precoding matrix is fixed for any given value of the first integer.
As a sub-embodiment of the above embodiment, the first precoding matrix is not fixed for any given value of the first integer.
As an embodiment, the rank of the first precoding matrix is not greater than 2.
As an embodiment, the first precoding matrix has a rank of 1.
As an embodiment, the first precoding matrix has a rank of 2.
As an embodiment, the first precoding matrix is a column vector.
As one embodiment, the first precoding matrix includes a plurality of column vectors.
As one embodiment, the first precoding matrix includes 2 column vectors.
As an embodiment, the first precoding matrix comprises a number of column vectors not greater than 2.
As an embodiment, the modulus of the first precoding matrix is equal to 1.
As an embodiment, a modulus of the first precoding matrix is smaller than 1.
As one embodiment, measurements for the first reference signal are used to generate a target normalized channel matrix; multiplying the target normalized channel matrix and the first precoding matrix to obtain a first effective channel matrix, wherein the first effective channel matrix and the reference power value are jointly used for determining the first power value.
As a sub-implementation of the above embodiment, the first power value is equal to a product of a square of a modulus of the first effective channel matrix and the reference power value.
As a sub-embodiment of the above embodiment, the first power value is equal to a product of a sum of squares of modes of diagonal elements of the first effective channel matrix and the reference power value.
As an embodiment, the first node performs channel estimation on the first reference signal to obtain a first channel matrix, and then normalizes the first channel matrix to obtain the target normalized channel matrix.
As an embodiment, the first node performs channel estimation on the first reference signal and the second reference signal to obtain a first channel matrix and a second channel matrix, respectively; respectively normalizing the first channel matrix and the second channel matrix to obtain a first normalized channel matrix and a second normalized channel matrix; and interpolating the first normalized channel matrix and the second normalized channel matrix to obtain the target normalized channel matrix.
As an embodiment, normalizing a given matrix means: multiplying the given matrix by a given coefficient, the given coefficient being a positive real number such that a modulus of the given normalized matrix is 1, results in a given normalized matrix.
As an embodiment, normalizing a given matrix means: dividing the given matrix by a modulus of the given matrix.
As one example, the norm is norm.
As an example, the modulus is l2Norm (2 norm).
As an example, the mold is an Euclidean norm.
As an embodiment, the modulus of a given matrix is the square sum of the squares of the moduli of each element in the given matrix.
Example 13
Embodiment 13 illustrates a schematic diagram of first information according to an embodiment of the present application; as shown in fig. 13. In embodiment 13, the first information indicates the first power offset in the present application, and the first power value in the present application is determined by the reference power value in the present application and the first power offset.
As an embodiment, the first information is carried by physical layer signaling.
As one embodiment, the first information is carried by layer 1(L1) signaling.
As an embodiment, the first information is carried by layer 1(L1) control signaling.
As an embodiment, the first information is carried by higher layer signaling.
As an embodiment, the first information is carried by RRC signaling.
For one embodiment, the first information includes information in one or more fields (fields) in the SCI.
As an embodiment, the first information is transferred by multicast (Groupcast).
As one embodiment, the first information is transmitted by Unicast (Unicast).
As an embodiment, the first information is user equipment-specific (UE-specific).
As an embodiment, the first information is transmitted on a SideLink (SideLink).
As an example, the first information is transmitted through a PC5 interface.
As an embodiment, the first signaling in this application includes the first information.
As an embodiment, the first information is later in time domain than the first signaling.
As an embodiment, the first information is earlier in time domain than the first signaling.
As an example, the first power offset and the reference power value are each in units of watts; the first power value is equal to a sum of the reference power value and the first power offset.
As an example, the first power offset may be in dB (decibel), the first power value may be in dBm, and the reference power value may be in watts; the first power value is equal to the reference power value scaled to dBm plus the first power offset.
As one embodiment, the first power offset is a real number.
Example 14
Embodiment 14 illustrates a block diagram of a processing apparatus for use in a first node device according to an embodiment of the present application; as shown in fig. 14. In fig. 14, a processing means 1400 in a first node device comprises a first receiver 1401 and a first transmitter 1402.
In embodiment 14, a first receiver 1401 receives a first reference signal in a first time unit; the first transmitter 1402 transmits the first channel information in the second time unit.
In embodiment 14, measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block employing the transmission mode corresponding to the first channel quality can be received by the first node at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
For one embodiment, the first receiver receives a second reference signal in a third time unit; wherein the third time unit is prior to the first time unit, and the transmission power of the first reference signal and the second reference signal cannot be assumed to be the same; measurements for the second reference signal are used to generate the first channel information.
For one embodiment, the first receiver receives first signaling and receives a first wireless signal on a first data channel; wherein the first signaling comprises configuration information of the first data channel, the configuration information of the first data channel comprising an MCS of the first wireless signal; the first reference signal is triggered by the first signaling.
As one embodiment, the MCS of the first wireless signal and the first channel information together indicate the first channel quality.
As an embodiment, the first transmitter transmits second signaling; wherein the second signaling indicates time-frequency resources used for transmitting the first channel information.
As an embodiment, the reference power value is a linear average of received power of the first reference signal on each RE, and the first power value is related to the reference power value.
For one embodiment, the first receiver receives first information; wherein the first information indicates a first power offset, the first power value being determined by the reference power value in common with the first power offset.
As an embodiment, the first node device is a user equipment.
As an embodiment, the first node device is a relay node device.
For one embodiment, the first receiver 1401 comprises at least one of the { antenna 452, receiver 454, receive processor 456, multi-antenna receive processor 458, controller/processor 459, memory 460, data source 467} of embodiment 4.
For one embodiment, the first transmitter 1402 includes at least one of the { antenna 452, transmitter 454, transmit processor 468, multi-antenna transmit processor 457, controller/processor 459, memory 460, data source 467} of embodiment 4.
Example 15
Embodiment 15 illustrates a block diagram of a processing apparatus for use in a second node device according to an embodiment of the present application; as shown in fig. 15. In fig. 15, the processing means 1500 in the second node device comprises a second transmitter 1501 and a second receiver 1502.
In embodiment 15, the second transmitter 1501 transmits the first reference signal in the first time unit; the second receiver 1502 receives the first channel information in a second time unit.
In embodiment 15, measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block adopting the transmission mode corresponding to the first channel quality can be received by a sender of the first channel information at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
As an embodiment, the second transmitter transmits a second reference signal in a third time unit; wherein the third time unit is prior to the first time unit, and the transmission power of the first reference signal and the second reference signal cannot be assumed to be the same; measurements for the second reference signal are used to generate the first channel information.
As an embodiment, the second transmitter transmits the first signaling and transmits the first wireless signal on a first data channel; wherein the first signaling comprises configuration information of the first data channel, the configuration information of the first data channel comprising an MCS of the first wireless signal; the first reference signal is triggered by the first signaling.
As one embodiment, the MCS of the first wireless signal and the first channel information together indicate the first channel quality.
As an embodiment, the second receiver receives second signaling; wherein the second signaling indicates time-frequency resources used for transmitting the first channel information.
As an embodiment, the reference power value is a linear average of received power of the first reference signal on each RE, and the first power value is related to the reference power value.
As an embodiment, the second transmitter transmits the first information; wherein the first information indicates a first power offset, the first power value being determined by the reference power value in common with the first power offset.
As an embodiment, the second node device is a user equipment.
As an embodiment, the second node device is a relay node device.
For one embodiment, the second transmitter 1501 includes at least one of { antenna 420, transmitter 418, transmit processor 416, multi-antenna transmit processor 471, controller/processor 475, memory 476} in embodiment 4.
For one embodiment, the second receiver 1502 includes at least one of { antenna 420, receiver 418, receive processor 470, multi-antenna receive processor 472, controller/processor 475, memory 476} in embodiment 4.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. User equipment, terminal and UE in this application include but not limited to unmanned aerial vehicle, Communication module on the unmanned aerial vehicle, remote control plane, the aircraft, small aircraft, the cell-phone, the panel computer, the notebook, vehicle-mounted Communication equipment, wireless sensor, network card, thing networking terminal, the RFID terminal, NB-IOT terminal, Machine Type Communication (MTC) terminal, eMTC (enhanced MTC) terminal, the data card, network card, vehicle-mounted Communication equipment, low-cost cell-phone, wireless Communication equipment such as low-cost panel computer. The base station or the system device in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, a gNB (NR node B) NR node B, a TRP (Transmitter Receiver Point), and other wireless communication devices.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A first node device for wireless communication, comprising:
a first receiver that receives a first reference signal in a first time unit;
a first transmitter for transmitting the first channel information in a second time unit;
wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block employing the transmission mode corresponding to the first channel quality can be received by the first node at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
2. The first node device of claim 1, wherein the first receiver receives a second reference signal in a third time unit; wherein the third time unit is prior to the first time unit, and the transmission power of the first reference signal and the second reference signal cannot be assumed to be the same; measurements for the second reference signal are used to generate the first channel information.
3. The first node device of claim 1 or 2, wherein the first receiver receives the first signaling and receives the first wireless signal on a first data channel; wherein the first signaling comprises configuration information of the first data channel, the configuration information of the first data channel comprising an MCS of the first wireless signal; the first reference signal is triggered by the first signaling.
4. The first node device of claim 3, wherein the MCS of the first wireless signal and the first channel information together indicate the first channel quality.
5. The first node device of any of claims 1-4, wherein the first transmitter transmits second signaling; wherein the second signaling indicates time-frequency resources used for transmitting the first channel information.
6. The first node apparatus of any of claims 1-5, wherein the reference power value is a linear average of received power of the first reference signal over each RE, and wherein the first power value is related to the reference power value.
7. The first node device of claim 6, wherein the first receiver receives first information; wherein the first information indicates a first power offset, the first power value being determined by the reference power value in common with the first power offset.
8. A second node device for wireless communication, comprising:
a second transmitter that transmits the first reference signal in a first time unit;
a second receiver receiving the first channel information in a second time unit;
wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block employing the transmission mode corresponding to the first channel quality can be received by the first node at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
9. A method in a first node used for wireless communication, comprising:
receiving a first reference signal in a first time unit;
transmitting the first channel information in a second time unit;
wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block employing the transmission mode corresponding to the first channel quality can be received by the first node at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
10. A method in a second node used for wireless communication, comprising:
transmitting a first reference signal in a first time unit;
receiving the first channel information in a second time unit;
wherein measurements for the first reference signal are used to generate the first channel information; the first channel information is used to indicate a first channel quality; when a first bit block occupies a first reference resource block and the average received power on each RE is a first power value, the first bit block employing the transmission mode corresponding to the first channel quality can be received by the first node at a transmission block error rate not exceeding a first threshold; the first power value relates to a measurement for the first reference signal; the transmission mode corresponding to the first channel quality comprises one or more of a modulation mode, a target code rate, or a transmission block size.
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