CN112688765B

CN112688765B - Method and apparatus in a node used for wireless communication

Info

Publication number: CN112688765B
Application number: CN201910989231.2A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2022-06-21
Anticipated expiration: 2039-10-17
Also published as: CN112688765A

Abstract

A method and apparatus in a node used for wireless communication is disclosed. A first node receives a first signal and a second signal, the second signal comprising a demodulation reference signal associated with the first signal. The first signal occupies a first set of time-frequency units in a time-frequency domain, the second signal occupies a second set of time-frequency units in the time-frequency domain, an average value of transmission energies of the time-frequency units of the first signal in the first set of time-frequency units is equal to a first energy, an average value of transmission energies of the time-frequency units of the second signal in the second set of time-frequency units is equal to a second energy, and a difference between the first energy and the second energy is related to a modulation mode adopted by the first signal. The method enables the transmission energy difference between the first signal and the second signal to be flexibly configured, which is beneficial to providing the performance of a receiver and reducing the signaling overhead.

Description

Method and device used in node of 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 scheme and apparatus related to power control in wireless communication.

Background

Orthogonal Frequency Division Multiplexing (OFDM) waveform technology is widely used in wireless communication systems, such as 4G Long Term Evolution (LTE) and 5G new air interface (NewRadio, NR) systems. OFDM is well resistant to frequency selective fading and is easily combined with multiple antenna techniques, and thus can achieve good performance in a broadband wireless communication system. The main drawback of OFDM is its high Peak-to-Average power ratio (PAPR). In practical applications, due to the non-linearity of the rf power amplifier, significant signal distortion occurs when the power of the input signal is high. To avoid such distortion, it is often necessary to power back-off the OFDM signal so that the OFDM signal operates as much as possible in the linear region of the power amplifier. Therefore, for a particular power amplifier, the OFDM signal loses some transmit power. Compared with OFDM, the peak-to-average ratio of a single-carrier waveform (such as DFT spread OFDM, namely DFT-s-OFDM) is relatively low, and for the same power amplifier, the single-carrier signal can reduce the power back-off value, so that higher transmission power is obtained. Therefore, the single carrier waveform has more important value in the coverage limited scene, and DFT-s-OFDM waveform technology is used in the uplink of LTE and NR.

Disclosure of Invention

Under other conditions, the peak-to-average ratio of a single carrier is mainly determined by a modulation method. In general, the larger the dynamic range of amplitude and phase of the modulation constellation, the larger the peak-to-average ratio. For example, the peak-to-average ratio of a single-carrier signal using 16QAM is larger than that of a single-carrier signal using QPSK, and the peak-to-average ratio of a single-carrier signal using 64QAM is larger than that of a single-carrier signal using 16 QAM. On the other hand, in a wireless communication system, a reference signal is often used for the purposes of signal demodulation, phase estimation, and the like, and the transmission power of the reference signal has a great influence on the performance of a receiver. Therefore, how to perform power control of the reference signal and other physical signals (e.g., the physical downlink shared channel) is a problem to be solved.

In view of the above, the present application discloses a solution. In the above description, the downlink pdcch is taken as an example, and the present application is also applicable to power control scenarios of other physical channels or physical signals (e.g. a physical downlink control channel, a physical uplink shared channel), so as to achieve similar technical effects. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to physical downlink shared channel, physical downlink control channel and physical uplink shared channel) also helps to reduce hardware complexity and cost. It should be noted that, without conflict, the embodiments and features in the embodiments in the user equipment of the present application may be applied to the base station, and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

As an example, the term (Terminology) in the present application is explained with reference to the definitions of the specification protocol TS36 series of 3 GPP.

As an example, the terms in this application are explained with reference to the definitions of the 3GPP specification protocol TS38 series.

As an example, the terms in the present application are explained with reference to the definitions of the 3GPP specification protocol TS37 series.

As an example, the terms in the present application are explained with reference to the definition of the specification protocol of IEEE (Institute of Electrical and Electronics Engineers).

The application discloses a method in a first node used for wireless communication, characterized by comprising:

receiving a first signal;

receiving a second signal comprising a demodulation reference signal associated with the first signal;

the first signal occupies a first set of time-frequency units in a time-frequency domain, the second signal occupies a second set of time-frequency units in the time-frequency domain, the first set of time-frequency units comprises a positive integer number of time-frequency units, and the second set of time-frequency units comprises a positive integer number of time-frequency units; the average value of the transmission energy of the first signal in the time-frequency unit in the first time-frequency unit set is equal to first energy, the average value of the transmission energy of the second signal in the time-frequency unit in the second time-frequency unit set is equal to second energy, and the difference between the first energy and the second energy is related to the modulation mode adopted by the first signal.

As an example, the problem to be solved by the present application is how to determine the difference in transmitted energy of a reference signal and other physical signals.

As an embodiment, the above method has a benefit that the transmission energy difference between the first signal and the second signal can be flexibly configured, and particularly, the energy of the first signal can be flexibly configured according to the modulation mode, for example, when the modulation mode has a low peak-to-average ratio characteristic, a higher transmission energy is adopted, which is beneficial to improving the receiving performance of the first signal.

As an embodiment, the above method has the advantage that said difference of said first energy and said second energy is related to a modulation of the first energy, and the first node may determine said difference of said first energy and said second energy based on the modulation, which saves signalling overhead.

According to one aspect of the application, the above method is characterized in that said first signal is generated by a first modulation symbol sequence being subjected to a waveform processing, said difference between said first energy and said second energy being related to said waveform processing used by said first signal.

As an example, the problem to be solved by the above method is the problem of how to determine the difference of the first energy and the second energy when there is more than one method of waveform processing of the first signal.

As an embodiment, the above method has a benefit that the first energy of the first signal can be flexibly configured according to the characteristics of the waveform processing used by the first signal, for example, when the waveform processing has a low peak-to-average ratio characteristic (for example, when a single-carrier waveform is used), the first signal can adopt relatively high transmission energy, thereby improving the receiving performance of the first signal.

As an embodiment, the above method has the advantage that said difference of said first energy and said second energy is related to a waveform processing manner of the first energy, from which the first node may determine said difference of said first energy and said second energy, which saves signaling overhead.

According to an aspect of the application, the above method is characterized in that the difference between the first energy and the second energy is related to a difference between a first power and a second power, wherein the first power is equal to a transmission power of the first signal in the first set of time-frequency units and the second power is equal to a transmission power of the second signal in the second set of time-frequency units.

According to an aspect of the application, the above method is characterized by receiving first signaling, wherein the first signaling is used for determining the difference of the first energy and the second energy.

As an embodiment, the essence of the above method is that the first signaling comprises a relation between the modulation of the first signal and the difference of the first energy and the second energy.

As an embodiment, the above method has a benefit that the difference between the first energy and the second energy is related to the modulation scheme of the first signal, and the relationship between them can be determined by the first signaling, so that the first node can jointly determine the difference between the first energy and the second energy according to the modulation scheme and the first signaling, thereby providing higher flexibility and facilitating flexible power configuration under different hardware capabilities and implementation methods.

According to an aspect of the present application, the method is characterized in that the constellation points included in the modulation scheme adopted by the first signal include two constellation points whose amplitudes are not equal, and the transmission energy of the first signal in one time-frequency unit in the first time-frequency unit set is equal to the average energy of all constellation points included in the modulation scheme adopted by the first signal.

According to an aspect of the present application, the above method is characterized in that the first time-frequency unit set includes X time-frequency units, the X time-frequency units occupy the same time-frequency resource in the time domain, X is a positive integer greater than 1, and the transmission energies of the first signals in the X time-frequency units are all equal.

According to one aspect of the application, the method is characterized by receiving second signaling; the second signaling is used for determining the first time-frequency unit set, the modulation and coding scheme adopted by the first signal is a first modulation and coding scheme, the first modulation and coding scheme belongs to a target modulation and coding scheme set, and the target modulation and coding scheme set comprises a positive integer number of modulation and coding schemes greater than 1; the target modulation coding scheme set is related to at least one of waveform processing used by the first signal or a frequency domain range of a time-frequency unit in the first time-frequency unit set in a frequency domain, the second signaling is used for determining the first modulation coding scheme in the target modulation coding scheme set, and the first modulation coding scheme is used for determining a modulation scheme adopted by the first signal.

The application discloses a method in a second node used for wireless communication, characterized by comprising:

transmitting a first signal;

transmitting a second signal comprising a demodulation reference signal associated with the first signal;

the first signal occupies a first time-frequency unit set in a time-frequency domain, the second signal occupies a second time-frequency unit set in the time-frequency domain, the first time-frequency unit set comprises a positive integer of time-frequency units, and the second time-frequency unit set comprises a positive integer of time-frequency units; the average value of the transmission energy of the first signal in the time-frequency unit in the first time-frequency unit set is equal to first energy, the average value of the transmission energy of the second signal in the time-frequency unit in the second time-frequency unit set is equal to second energy, and the difference between the first energy and the second energy is related to the modulation mode adopted by the first signal.

According to an aspect of the application, the above method is characterized by transmitting first signaling, wherein the first signaling is used for determining the difference of the first energy and the second energy.

According to an aspect of the present application, the above method is characterized in that the first time frequency unit set includes X time frequency units, the X time frequency units occupy the same time resource in the time domain, X is a positive integer greater than 1, and the transmission energy of the first signals in the X time frequency units is equal.

According to one aspect of the application, the method is characterized by transmitting the second signaling; the second signaling is used for determining the first time-frequency unit set, the modulation and coding scheme adopted by the first signal is a first modulation and coding scheme, the first modulation and coding scheme belongs to a target modulation and coding scheme set, and the target modulation and coding scheme set includes a positive integer number of modulation and coding schemes greater than 1; the target modulation coding scheme set is related to at least one of waveform processing used by the first signal or a frequency domain range of a time-frequency unit in the first time-frequency unit set in a frequency domain, the second signaling is used for determining the first modulation coding scheme in the target modulation coding scheme set, and the first modulation coding scheme is used for determining a modulation scheme adopted by the first signal.

The application discloses a first node device used for wireless communication, characterized by comprising:

a first receiver that receives a first signal;

a second receiver to receive a second signal comprising a demodulation reference signal associated with the first signal;

The present application discloses a second node device used for wireless communication, comprising:

a first transmitter that transmits a first signal;

a second transmitter to transmit a second signal, the second signal comprising a demodulation reference signal associated with the first signal;

As an example, the present application has the following advantages:

according to the method and the device, the demodulation reference signal and the transmission power of the physical channel related to the demodulation reference signal can be flexibly adjusted according to different modulation modes of the physical channel, so that the transmission power of the demodulation reference signal is favorably improved, and the receiving performance of the physical channel is further improved.

In the application, the difference between the transmission power of the demodulation reference signal and the transmission power of the physical channel associated with the demodulation reference signal can be determined implicitly through the modulation mode of the physical channel without explicit notification, so that the control signaling overhead is saved.

According to the method and the device, the demodulation reference signal and the transmission power of the physical channel associated with the demodulation reference signal can be flexibly adjusted according to different waveforms used by the physical channel, so that the transmission power of the demodulation reference signal is favorably improved, and the receiving performance of the physical channel is further improved.

In the application, the difference between the demodulation reference signal and the transmission power of the physical channel associated with the demodulation reference signal can be determined by the modulation mode of the physical channel and the waveform of the physical channel without explicit notification, so that the control signaling overhead is saved.

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 illustrates a process flow diagram of a first node 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 a radio protocol architecture of a user plane and a 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 wireless signal transmission flow diagram according to an embodiment of the present application;

FIG. 6 shows a schematic diagram of a difference between a first energy and a second energy in relation to a modulation of a first signal according to an embodiment of the present application;

FIG. 7 shows a flow diagram for generating a first signal according to an embodiment of the application;

FIG. 8 shows a schematic diagram of a waveform processing according to an embodiment of the present application;

FIG. 9 shows a schematic diagram of a waveform processing according to an embodiment of the present application;

FIG. 10 is a diagram illustrating a time-frequency resource unit occupied by a first signal and a second signal according to an embodiment of the present application;

FIG. 11 is a diagram illustrating a time-frequency resource unit occupied by a first signal and a second signal according to an embodiment of the present application;

FIG. 12 shows a block diagram of a processing apparatus for use in a first node device according to an embodiment of the present application;

fig. 13 shows a block diagram of a processing apparatus used in a second node device according to an embodiment of the present 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 processing flow diagram of a first node according to an embodiment of the present application, as shown in fig. 1. 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, a first node in the present application receives a first signal in step S101; a second signal is received in step S102, the second signal comprising a demodulation reference signal associated with the first signal. In this embodiment, the first signal occupies a first set of time-frequency units in a time-frequency domain, the second signal occupies a second set of time-frequency units in the time-frequency domain, the first set of time-frequency units includes a positive integer number of time-frequency units, and the second set of time-frequency units includes a positive integer number of time-frequency units; the average value of the transmission energy of the first signal in the time-frequency unit in the first time-frequency unit set is equal to first energy, the average value of the transmission energy of the second signal in the time-frequency unit in the second time-frequency unit set is equal to second energy, and the difference between the first energy and the second energy is related to the modulation mode adopted by the first signal.

For one embodiment, the first signal comprises a baseband signal.

As one embodiment, the first signal comprises a wireless signal.

As one embodiment, the first signal is transmitted on a SideLink (SideLink).

For one embodiment, the first signal is transmitted on a DownLink (DownLink).

As one embodiment, the first signal is transmitted on an UpLink (UpLink).

As one embodiment, the first signal is transmitted on a Backhaul link (Backhaul).

As an embodiment, the first signal is transmitted over a Uu interface.

As an example, the first signal is transmitted through a PC5 interface.

As one embodiment, the first signal is transmitted by Unicast (Unicast).

As an embodiment, the first signal is transmitted by multicast (Groupcast).

As an embodiment, the first signal is Broadcast (Broadcast) transmitted.

As an embodiment, the first signal carries one TB (Transport Block).

As an embodiment, the first signal carries one CB (Code Block).

As an embodiment, the first signal carries a CBG (Code Block Group).

As an embodiment, the first signal includes a Physical Downlink Shared Channel (PDSCH).

As an embodiment, the first signal includes a Physical Downlink Control Channel (PDCCH).

As one embodiment, the first signal includes a Physical Uplink Shared Channel (PUSCH).

As an embodiment, the first signal includes a Physical Uplink Control Channel (PUCCH).

As one embodiment, the first signal includes a Physical Broadcast Channel (PBCH);

as an embodiment, the first signal includes a Physical Sidelink Control Channel (PSCCH).

As an embodiment, the first signal includes a Physical Sidelink Shared Channel (psch).

As an embodiment, the first signal includes a Physical Sidelink Feedback Channel (PSFCH).

As one embodiment, the first signal includes a Physical Sidelink Broadcast Channel (PSBCH).

As an embodiment, the first signal is used in a frequency range that exceeds the first frequency and is less than the second frequency.

As an example, the first signal is used in a frequency range between 52.6GHz and 114 GHz.

As one embodiment, the first signal is transmitted in a licensed spectrum.

As one embodiment, the first signal is transmitted in an unlicensed spectrum.

As an embodiment, the phrase "demodulation reference signal associated with the first signal" includes the following meanings: the demodulation reference signal is used for demodulation of the first signal.

As an embodiment, the phrase "demodulation reference signal associated with the first signal" includes the following meanings: the demodulation reference signal is used for the DMRS of the first signal.

As an embodiment, the phrase "demodulation reference signal associated with the first signal" includes the following meaning: the demodulation reference signal and the first signal are indicated by the same Downlink Control Information (DCI).

As an embodiment, the phrase "demodulation reference signal associated with the first signal" includes the following meanings: the demodulation reference signal and the first signal are indicated by the same Sidelink Control Information (SCI).

As an embodiment, the demodulation reference signal is generated by a pseudo-random sequence.

As an embodiment, the demodulation reference signal is generated by a Gold sequence.

As one embodiment, the demodulation reference signal is generated by an M-sequence.

As an embodiment, the demodulation reference signal is generated by a zadoff-Chu sequence.

As an embodiment, the demodulation reference signal is generated according to section 7.4.1.5 of 3GPP TS 38.211.

As an embodiment, the demodulation reference signal is cell-specific.

As an embodiment, the demodulation reference signal is user equipment specific.

For one embodiment, the demodulation reference signal is transmitted on a secondary link.

For one embodiment, the second signal includes a Phase Tracking Reference Signal (PTRS).

For one embodiment, the second signal includes a channel state information reference signal (CSI-RS).

As one embodiment, the second signal includes a Synchronization Signal (SS).

As one embodiment, the second signal includes a primary Synchronization Signal (SS).

As one example, the second signal includes a secondary Synchronization Signal (SS).

As an embodiment, the time-frequency resource unit is an re (resource element).

As an embodiment, the time-frequency resource element is one multicarrier symbol occupying a first frequency range.

As an embodiment, the time-frequency resource element is one single carrier symbol occupying a first frequency range.

As an embodiment, the time-frequency resource element is one OFDM symbol occupying a first frequency range.

For one embodiment, the time-frequency resource element is one DFT-s-OFDM symbol occupying a first frequency range.

As an embodiment, the time-frequency resource unit is a single carrier-frequency division multiple access (SC-FDMA) symbol occupying the first frequency range.

As an embodiment, the time-frequency resource unit is a single carrier-Quadrature Amplitude Modulation (SC-QAM) symbol occupying a first frequency range.

As an embodiment, the time-frequency resource unit is a cyclic prefix-single carrier (CP-SC) symbol occupying the first frequency range.

As a sub-embodiment of the foregoing embodiment, the first frequency range includes a frequency range corresponding to a positive integer number of Physical Resource Blocks (PRBs).

As a sub-embodiment of the foregoing embodiment, the first frequency range includes a frequency range corresponding to a positive integer number of Virtual Resource Blocks (VRBs).

As a sub-embodiment of the foregoing embodiment, the first frequency range includes a frequency range corresponding to bwp (bandwidth range).

As a sub-embodiment of the above embodiment, the first frequency range includes a frequency range corresponding to a channel bandwidth (ChannelBandwidth).

As a sub-embodiment of the above embodiment, the first frequency range includes a frequency range corresponding to a carrier bandwidth (CarrierBandwidth).

As a sub-embodiment of the above embodiment, the first frequency range includes a frequency range corresponding to a system bandwidth (system bandwidth).

As an embodiment, the first energy comprises energy per resource unit (EPRE).

As an embodiment, the second energy comprises EPRE.

As an example, the unit of the first energy and the second energy is one of joule, watt, milliwatt, millidecibel (dBm).

As an embodiment, the first energy and the second energy are real transmitted energies of the first signal and the second signal, respectively.

As an embodiment, the first energy and the second energy are transmission energies of the first signal and the second signal, respectively, assumed by the first node.

As one embodiment, the difference of the first energy and the second energy is assumed by a first node.

As an embodiment, the difference of the first energy and the second energy comprises a ratio of the first energy and the second energy.

As an embodiment, the difference of the first energy and the second energy comprises a difference of the first energy and the second energy.

As an embodiment, the difference of the first energy and the second energy is related to a configuration of the demodulation reference signal.

As an embodiment, the difference between the first energy and the second energy is related to a difference between a first power and a second power, wherein the first power is equal to a transmission power of the first signal in the first set of time-frequency units, and the second power is equal to a transmission power of the second signal in the second set of time-frequency units.

As a sub-embodiment of the above-mentioned embodiment, the sentence "the difference of the first energy and the second energy and the difference of the first power and the second power relate to" includes the following meanings: the difference of the first energy and the second energy is the same as the difference of the first power and the second power.

As an embodiment, the transmission energy of the first signal on each time-frequency unit in the first set of time-frequency units is equal.

As an embodiment, the first time-frequency unit set includes X time-frequency units, the X time-frequency units occupy the same time-frequency resource in a time domain, X is a positive integer greater than 1, and transmission energies of the first signals in the X time-frequency units are all equal.

As an embodiment, the transmission energy of the first signal on each time-frequency unit in the first set of time-frequency units with the same time resource is equal.

As an embodiment, the transmission energies of the first signal on at least two time frequency units of the first set of time frequency units with different time resources are unequal.

As an embodiment, transmission energies of the first signal on at least two time frequency units of the first set of time frequency units with different time resources are unequal, and at least one of the at least two time frequency units is frequency division multiplexed with a reference signal.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2.

Fig. 2 illustrates a diagram of a network architecture 200 of 5G NR, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced) systems. The 5G NR or LTE network architecture 200 may be referred to as a 5GS (5G System)/EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS/EPS 200 may include one or more UEs (User Equipment) 201, NG-RANs (next generation radio access networks) 202, 5 GCs (5G Core networks )/EPCs (Evolved Packet cores) 210, HSS (Home Subscriber Server)/UDMs (Unified Data Management) 220, and internet services 230. The 5GS/EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the 5GS/EPS 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 or other cellular networks. The NG-RAN includes NR node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn 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 (transmitting receiving node), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5GC/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, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a drone, an aircraft, a narrowband internet of things device, a machine type communication device, a terrestrial 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 5GC/EPC210 through an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management domain)/SMF (Session Management Function) 211, other MME/AMF/SMF214, S-GW (serving Gateway)/UPF (user plane Function) 212, and P-GW (Packet data Network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC 210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet protocol) packets are transported through the S-GW/UPF212, which S-GW/UPF212 itself is connected to the P-GW/UPF 213. The P-GW provides UE IP address assignment as well as other functions. The P-GW/UPF213 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-switched streaming 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 gNB 203.

As an embodiment, the second node in this application includes the UE 241.

As an embodiment, the first node in this application includes the gNB 203.

As an embodiment, the second node in the present application includes the UE 201.

As an embodiment, the second node in this application includes the gNB 204.

As an embodiment, the UE201 is included in the user equipment of the present application.

As an embodiment, the UE241 is included in the user equipment in this application.

As an embodiment, the base station apparatus in this application includes the gNB 203.

As an embodiment, the base station device in this application includes the gNB 204.

As an embodiment, the UE201 supports sidelink transmission.

As an embodiment, the UE201 supports a PC5 interface.

As an embodiment, the UE201 supports the Uu interface.

For one embodiment, the UE241 supports sidelink transmission.

As an embodiment, the UE241 supports a PC5 interface.

As an embodiment, the gNB203 supports the Uu interface.

As an example, the gNB203 supports Integrated Access and Backhaul (IAB).

As an example, the gNB204 supports Integrated Access and Backhaul (IAB).

As an embodiment, the sender of the first signal in this application includes the gNB 203.

As an embodiment, the receiver of the first signal in this application includes the UE 201.

As an example, the receiver of the first signal in this application includes the gNB 204.

As an embodiment, the sender of the second signal in this application includes the gNB 203.

As an embodiment, the receiver of the second signal in this application includes the UE 201.

As an example, the receiver of the second signal in this application includes the gNB 204.

As an embodiment, the sender of the first signal in the present application includes the UE 201.

As an embodiment, the receiver of the first signal in this application includes the gNB 203.

As an embodiment, the receiver of the first signal in this application includes the UE 241.

As an embodiment, the sender of the second signal in this application includes the UE 201.

As an embodiment, the receiver of the second signal in this application includes the gNB 203.

As an embodiment, the receiver of the second signal in this application includes the UE 241.

As an embodiment, the sender of the first signaling in this application includes the gNB 203.

As an embodiment, the receiver of the first signaling in this application includes the UE 241.

As an embodiment, the receiver of the first signaling in this application includes the gNB 204.

As an embodiment, the sender of the first signaling in the present application includes the UE 201.

As an embodiment, the sender of the second signaling in this application includes the gNB 203.

As an embodiment, the receiver of the second signaling in this application includes the UE 241.

As an embodiment, the receiver of the second signaling in this application includes the gNB 204.

As an embodiment, the sender of the second signaling in this application includes the UE 201.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to 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 350 and the control plane 300, fig. 3 showing the radio protocol architecture for the first communication node device (UE, RSU in gbb or V2X) and the second communication node device (gbb, RSU in UE or V2X), or the control plane 300 between two UEs, 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 first and second communication node devices and the two UEs through PHY 301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by ciphering data packets and provides handoff support between second communication node devices to the first communication node device. 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. 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 between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3) in the Control plane 300 is responsible for obtaining Radio resources (i.e. Radio bearers) and configuring the lower layers using RRC signaling between the second communication node device and the first communication node device. The radio protocol architecture of the user plane 350 comprises layer 1(L1 layer) and layer 2(L2 layer), the radio protocol architecture in the user plane 350 for the first and second communication node devices being substantially the same for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355 and the MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes an SDAP (Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support diversity of services. Although not shown, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.).

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 signal in this application is generated in the PHY 351.

As an example, the first signal in this application is generated in the MAC 352.

As an embodiment, the second signal in this application is generated in the PHY 351.

As an example, the second signal in this application is generated in the MAC 352.

As an embodiment, the first signaling in this application is generated in the MAC 352.

As an embodiment, the first signaling in this application is generated in the PHY 351.

As an embodiment, the second signaling in this application is generated in the MAC 352.

As an embodiment, the second signaling in this application is generated in the PHY 351.

For one embodiment, the first signal is generated in the PHY 301.

As an example, the first signal in this application is generated in the MAC 302.

As an embodiment, the first signal in this application is generated in the RRC 306.

As an example, the second signal in this application is generated in the PHY 301.

As an example, the second signal in this application is generated in the MAC 302.

As an embodiment, the second signal in this application is generated in the RRC 306.

As an embodiment, the first signaling in this application is generated in the MAC 302.

As an embodiment, the first signaling in this application is generated in the PHY 301.

As an embodiment, the first signaling in this application is generated in the RRC 306.

As an embodiment, the second signaling in this application is generated in the MAC 302.

As an embodiment, the second signaling in this application is generated in the PHY 301.

As an embodiment, the second signaling in this application is generated in the RRC 306.

Example 4

Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to 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 transmissions from the first communications device 410 to the first communications device 450, 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 communications device 450 based on various priority metrics. The controller/processor 475 is also responsible for 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 mapping of signal constellation 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 spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes 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 spatial streams destined for the second communication device 450. The symbols on each spatial stream are demodulated and recovered at 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 communications 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 functions 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 transmissions from the first communications device 410 to the second communications device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer 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.

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 transmission from the first communications apparatus 410 to the second communications apparatus 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller/processor 459 is also responsible for 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 transmit processor 468 then modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to different antennas 452 via a transmitter 454 after analog precoding/beamforming in the multi-antenna transmit processor 457. 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. In transmissions from the second communications device 450 to the first communications device 410, 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 UE 450. Upper layer data packets from the controller/processor 475 may be provided to a core network.

As an embodiment, the first node in this application includes the second communication device 450, and the second node in this application includes the first communication device 410.

As a sub-embodiment of the foregoing embodiment, the first node is a user equipment, and the second node is a user equipment.

As a sub-embodiment of the foregoing embodiment, the first node is a user equipment, and the second node is a relay node.

As a sub-embodiment of the foregoing embodiment, the first node is a user equipment, and the second node is a base station equipment.

As a sub-embodiment of the foregoing embodiment, the first node is a relay node, and the second node is a base station device.

As a sub-embodiment of the foregoing embodiment, the first node is a base station device, and the second node is a base station device.

As a sub-embodiment of the above-described embodiment, the second communication device 450 includes: at least one controller/processor; the at least one controller/processor is responsible for HARQ operations.

As a sub-embodiment of the above-described embodiment, the first communication device 410 includes: at least one controller/processor; the at least one controller/processor is responsible for HARQ operations.

As a sub-embodiment of the above-described embodiment, the first communication device 410 includes: at least one controller/processor; the at least one controller/processor is responsible for error detection using positive Acknowledgement (ACK) and/or Negative Acknowledgement (NACK) protocols 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 a first signal; receiving a second signal comprising a demodulation reference signal associated with the first signal; the first signal occupies a first set of time-frequency units in a time-frequency domain, the second signal occupies a second set of time-frequency units in the time-frequency domain, the first set of time-frequency units comprises a positive integer number of time-frequency units, and the second set of time-frequency units comprises a positive integer number of time-frequency units; the average value of the transmission energy of the first signal in the time-frequency unit in the first time-frequency unit set is equal to first energy, the average value of the transmission energy of the second signal in the time-frequency unit in the second time-frequency unit set is equal to second energy, and the difference between the first energy and the second energy is related to the modulation mode adopted by the first signal.

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 a first signal; receiving a second signal comprising a demodulation reference signal associated with the first signal; the first signal occupies a first time-frequency unit set in a time-frequency domain, the second signal occupies a second time-frequency unit set in the time-frequency domain, the first time-frequency unit set comprises a positive integer of time-frequency units, and the second time-frequency unit set comprises a positive integer of time-frequency units; the average value of the transmission energy of the first signal in the time-frequency unit in the first time-frequency unit set is equal to first energy, the average value of the transmission energy of the second signal in the time-frequency unit in the second time-frequency unit set is equal to second energy, and the difference between the first energy and the second energy is related to the modulation mode adopted by the first signal.

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 a first signal; transmitting a second signal comprising a demodulation reference signal associated with the first signal; the first signal occupies a first set of time-frequency units in a time-frequency domain, the second signal occupies a second set of time-frequency units in the time-frequency domain, the first set of time-frequency units comprises a positive integer number of time-frequency units, and the second set of time-frequency units comprises a positive integer number of time-frequency units; the average value of the transmission energy of the first signal in the time-frequency unit in the first time-frequency unit set is equal to first energy, the average value of the transmission energy of the second signal in the time-frequency unit in the second time-frequency unit set is equal to second energy, and the difference between the first energy and the second energy is related to the modulation mode adopted by the first signal.

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 a first signal; transmitting a second signal comprising a demodulation reference signal associated with the first signal; the first signal occupies a first set of time-frequency units in a time-frequency domain, the second signal occupies a second set of time-frequency units in the time-frequency domain, the first set of time-frequency units comprises a positive integer number of time-frequency units, and the second set of time-frequency units comprises a positive integer number of time-frequency units; the average value of the transmission energy of the first signal in the time-frequency unit in the first time-frequency unit set is equal to first energy, the average value of the transmission energy of the second signal in the time-frequency unit in the second time-frequency unit set is equal to second energy, and the difference between the first energy and the second energy is related to the modulation mode adopted by the first signal.

As one example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467 may be utilized to receive the first signal as described herein.

As one example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467 may be utilized to receive the second signal as described herein.

As one example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467 may be utilized to receive the first signaling in this application.

As an example, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 458, the transmit processor 468, the controller/processor 459, the memory 460, the data source 467 may be used to receive the second signaling in this application.

As one example, at least one of { the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller/processor 475, the memory 476} is used to transmit the first signal in this application.

As one example, at least one of { the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller/processor 475, the memory 476} is used for transmitting the second signal in the present application.

As an example, at least one of { the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller/processor 475, the memory 476} is used for transmitting the first signaling in the present application.

As one example, at least one of { the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller/processor 475, the memory 476} is used for transmitting the second signaling in this application.

Example 5

Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 5. In FIG. 5, communication between the first node U1 and the second node U2 is over an air interface. In fig. 5, the steps of the dotted line block F51 and the dotted line block F52, respectively, are optional. In particular, the order of steps in blocks does not represent a particular chronological relationship between the various steps.

For the first node U1, receiving first signaling in step S11; receiving a second signaling in step S12; receiving a first signal in step S13; the second signal is received in step S14.

For the second node U2, sending first signaling in step S21; receiving a second signaling in step S22; transmitting a first signal in step S23; a second signal is sent in step S24.

In embodiment 5, the second signal includes a demodulation reference signal associated with the first signal; the first signal occupies a first set of time-frequency units in a time-frequency domain, the second signal occupies a second set of time-frequency units in the time-frequency domain, the first set of time-frequency units comprises a positive integer number of time-frequency units, and the second set of time-frequency units comprises a positive integer number of time-frequency units; the average value of the transmission energy of the first signal in the time-frequency unit in the first time-frequency unit set is equal to first energy, the average value of the transmission energy of the second signal in the time-frequency unit in the second time-frequency unit set is equal to second energy, and the difference between the first energy and the second energy is related to the modulation mode adopted by the first signal; the first signaling is used to determine the difference of the first energy and the second energy; the second signaling is used for determining the first set of time-frequency units, the modulation and coding scheme adopted by the first signal is a first modulation and coding scheme, the first modulation and coding scheme belongs to a target modulation and coding scheme set, and the target modulation and coding scheme set comprises a positive integer number of modulation and coding schemes greater than 1; the target modulation coding scheme set is related to at least one of waveform processing used by the first signal or a frequency domain range of a time-frequency unit in the first time-frequency unit set in a frequency domain, the second signaling is used for determining the first modulation coding scheme in the target modulation coding scheme set, and the first modulation coding scheme is used for determining a modulation scheme adopted by the first signal.

As an embodiment, the above sentence "the target modulation coding scheme set relates to at least one of a waveform processing used by the first signal or a frequency domain range in which a frequency domain belongs to a time-frequency unit in the first time-frequency unit set" includes the following meanings: the target modulation coding scheme set is related to the waveform processing used by the first signal and the frequency domain range of a time-frequency unit in the first time-frequency unit set in the frequency domain.

As an embodiment, the above sentence "the target modulation and coding scheme set is related to at least one of a waveform processing used by the first signal or a frequency domain range of a time-frequency unit in the first time-frequency unit set in a frequency domain" includes the following meanings: the target modulation coding scheme set is related to a waveform processing used by the first signal.

As an embodiment, the above sentence "the target modulation coding scheme set relates to at least one of a waveform processing used by the first signal or a frequency domain range in which a frequency domain belongs to a time-frequency unit in the first time-frequency unit set" includes the following meanings: the target modulation coding mode set is related to a frequency domain range of one time frequency unit in the first time frequency unit set in a frequency domain.

For one embodiment, the air interface between the second node U2 and the first node U1 is a PC5 interface.

For one embodiment, the air interface between the second node U2 and the first node U1 includes a sidelink.

For one embodiment, the air interface between the second node U2 and the first node U1 is a Uu interface.

For one embodiment, the air interface between the second node U2 and the first node U1 includes a cellular link.

For one embodiment, the air interface between the second node U2 and the first node U1 comprises a wireless interface between user equipment and user equipment.

For one embodiment, the air interface between the second node U2 and the first node U1 comprises a wireless interface between a base station device and a user equipment.

As an embodiment, the first 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 embodiment, the first node in this application is a base station.

As an embodiment, the second node in this application is a terminal.

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 second node in this application is a base station.

As one example, the step in block F51 in fig. 5 exists.

As one example, the step in block F52 in fig. 5 exists.

As an example, the steps in block F51 in fig. 5 exist when the first signaling is sent by the second node U2.

As an example, the steps in block F52 in fig. 5 exist when the second signaling is sent by the second node U2.

As an example, the steps in block F51 in fig. 5 exist when the first signaling is sent by a communication node other than the second node U2.

As an example, the steps in block F52 in fig. 5 exist when the second signaling is sent by a communication node other than the second node U2.

As a sub-embodiment of the above embodiment, the communication nodes other than the second node U2 are user equipments.

As a sub-embodiment of the above embodiment, the communication nodes other than the second node U2 are base stations.

As a sub-embodiment of the above embodiment, the communication nodes other than the second node U2 are relays.

As an example, the step in block F51 in fig. 5 exists when the difference of the first energy and the second energy is a Semi-static (Semi-static) configuration.

As an example, the step in block F51 in fig. 5 exists when the difference of the first energy and the second energy is preconfigured (Pre-configured).

As an example, the step in block F51 in fig. 5 exists when the difference of the first energy and the second energy is Configured (Configured).

As an example, the step in block F52 in fig. 5 exists when the modulation scheme adopted by the first signal is a semi-static configuration.

As an example, the step in block F52 in fig. 5 exists when the modulation scheme employed by the first signal is pre-configured.

As an example, when the modulation scheme used by the first signal is configured, the step in block F52 in fig. 5 exists.

As one example, the step in block F51 in fig. 5 is not present.

As one example, the step in block F52 in fig. 5 is not present.

As an example, when the difference of the first energy and the second energy is a Constant (Constant), the step in block F51 in fig. 5 does not exist.

As an example, when the difference between the first energy and the second energy is not compatible, the step in block F51 in fig. 5 does not exist.

As an embodiment, the step in block F51 in fig. 5 is absent when said difference between said first energy and said second energy is predefined (Pre-defined).

As an example, when the modulation scheme adopted by the first signal is constant, the step in block F52 in fig. 5 does not exist.

As an example, when the modulation scheme adopted by the first signal is non-available, the step in block F52 in fig. 5 is not present.

As an embodiment, the step in block F52 in fig. 5 is absent when the modulation scheme employed by said first signal is predefined (Pre-defined).

As an embodiment, the first signaling is dynamic signaling.

As an 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 is transmitted on a SideLink (SideLink).

As an embodiment, the first signaling is transmitted through a PC5 interface.

As one embodiment, the first signaling is transmitted on a DownLink (DownLink).

As an embodiment, the first signaling is transmitted over a Uu interface.

As an embodiment, the first signaling does not include a reference signal.

As an embodiment, the first signaling is Unicast (Unicast) transmission.

As an embodiment, the first signaling is transmitted by multicast (Groupcast).

As an embodiment, the first signaling is transmitted in a broadcast (borradcast).

As an embodiment, the first signaling is cell-specific.

As an embodiment, the first signaling is user equipment specific.

As an embodiment, the first signaling comprises all or part of a higher layer signaling.

As an embodiment, the first signaling comprises all or part of one RRC layer signaling.

As an embodiment, the first signaling comprises one or more fields (fields) in an RRC IE.

As one embodiment, the first signaling includes one or more fields in one SIB.

As an embodiment, the first signaling comprises all or part of a MAC layer signaling.

As an embodiment, the first signaling includes one or more fields in one MAC CE.

For one embodiment, the first signaling comprises one or more fields in a PHY layer signaling.

As an embodiment, the first signaling includes SCI (Sidelink Control Information).

For one embodiment, the first signaling includes one or more fields in one SCI.

As an embodiment, the first signaling comprises one or more fields in one SCI format.

As an embodiment, the first signaling includes DCI (Downlink Control Information).

As one embodiment, the first signaling includes one or more fields in one DCI.

As one embodiment, the first signaling is semi-statically configured.

As an embodiment, the first signaling is dynamically configured.

As an embodiment, the first signaling directly indicates the difference of the first energy and the second energy.

As an embodiment, said first signaling indirectly indicates said difference of said first energy and said second energy.

As an embodiment, the second signaling is dynamic signaling.

As an embodiment, the second signaling is layer 1(L1) signaling.

As an embodiment, the second signaling is layer 1(L1) control signaling.

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 second signaling is transmitted on a DownLink (DownLink).

As an embodiment, the second signaling is transmitted over a Uu interface.

As an embodiment, the second signaling does not include a reference signal.

As an embodiment, the second signaling is Unicast (Unicast) transmission.

As an embodiment, the second signaling is multicast (Groupcast) transmitted.

As an embodiment, the second signaling is transmitted in a broadcast (borradcast).

As an embodiment, the second signaling is cell-specific.

As an embodiment, the second signaling is user equipment specific.

As an embodiment, the second signaling comprises all or part of a higher layer signaling.

As an embodiment, the second signaling comprises all or part of an RRC layer signaling.

As an embodiment, the second signaling includes one or more fields (fields) in an RRC IE.

For one embodiment, the second signaling includes one or more fields in a SIB.

As an embodiment, the second signaling comprises all or part of a MAC layer signaling.

As an embodiment, the second signaling includes one or more fields in one MAC CE.

For one embodiment, the second signaling includes one or more fields in a PHY layer signaling.

As an embodiment, the second signaling includes SCI (Sidelink Control Information).

As an embodiment, the second signaling comprises one or more fields in one SCI.

As an embodiment, the second signaling comprises one or more fields in one SCI format.

As an embodiment, the second signaling includes DCI (Downlink Control Information).

As an embodiment, the second signaling includes one or more fields in one DCI.

As an embodiment, the second signaling is semi-statically configured.

As an embodiment, the second signaling is dynamically configured.

As an embodiment, the second signaling directly indicates a modulation scheme adopted by the first signal.

As an embodiment, the second signaling indirectly indicates a modulation scheme adopted by the first signal.

Example 6

Embodiment 6 illustrates a schematic diagram of a relationship between a difference between the first energy and the second energy and a modulation scheme of the first signal according to an embodiment of the present application, as shown in fig. 6. In the table shown in fig. 6, the non-empty cells in the first column indicate M modulation schemes of the first signal, the non-empty cells in the first row indicate N allocation schemes of the demodulation reference signals, and M and N are positive integers; the value in M × N cells in the table excluding the first row and the first column indicates the difference between the first energy and the second energy in the modulation scheme and demodulation reference signal arrangement scheme corresponding to the cell.

As an embodiment, the Modulation scheme of the M first signals includes Quadrature Amplitude Modulation (QAM).

As an embodiment, the modulation scheme of the M first signals includes Phase Shift Keying (PSK).

As an embodiment, the modulation schemes of the M first signals include at least two of pi/2BPSK, QPSK,16QAM,64QAM,256QAM, and 1024 QAM.

As an embodiment, the constellation points included in the modulation schemes of the M first signals include two constellation points with different amplitudes.

As an embodiment, the modulation schemes of the M first signals include 16QAM,64QAM, and 256 QAM.

As an embodiment, the difference between the first energy and the second energy in this application relates to a configuration of the demodulation reference signal.

As an embodiment, the configuration manner of the N demodulation reference signals includes the number of ports of the demodulation reference signals.

As an embodiment, the N demodulation reference signals are configured in a manner that includes a pattern (pattern) type of the demodulation reference signal.

As an embodiment, the N configurations of the demodulation reference signals include a resource mapping type of the demodulation reference signal.

As an embodiment, the N demodulation reference signals are configured in a manner that includes frequency domain density of the demodulation reference signals.

As an embodiment, the N demodulation reference signals are configured in a manner that includes a time domain density of the demodulation reference signals.

As an embodiment, the N demodulation reference signals are configured to include the number of code division multiplexing groups (CDMgroup) of the demodulation reference signals.

As an embodiment, the N demodulation reference signals are configured to include the number of data-free code division multiplexing groups (CDMgroup) of the demodulation reference signals.

As an embodiment, the difference between the first energy and the second energy is related to a Maximum Power Reduction (MPR) corresponding to the modulation scheme of the first signal.

As an embodiment, the difference between the first energy and the second energy is equal to a maximum power back-off corresponding to the modulation scheme of the first signal.

As an embodiment, the difference between the first energy and the second energy and a maximum power back-off corresponding to the modulation scheme of the first signal are opposite numbers to each other.

As an embodiment, the difference between the first energy and the second energy and a maximum power back-off corresponding to the modulation scheme of the first signal are reciprocal.

As an embodiment, the difference of the first energy and the second energy is preconfigured.

As one embodiment, the difference of the first energy and the second energy is a constant.

As an embodiment, the values in the M × N cells in the table other than the first row and the first column are determined by the first signaling.

Example 7

Embodiment 7 illustrates a flow chart for generating a first signal according to an embodiment of the present application, as shown in fig. 7. In fig. 7, a first bit block is modulated 701 to generate a first modulation symbol sequence; the first sequence of modulation symbols undergoes waveform processing 702 to generate a first signal.

As an embodiment, the first bit block is generated by a first payload through channel coding.

As a sub-embodiment of the above embodiment, the first payload includes a Transport Block (TB).

As a sub-embodiment of the above embodiment, the first load comprises a Coding Block (CB).

As a sub-embodiment of the above embodiment, the first payload includes a Code Block Group (CBG).

As a sub-embodiment of the above embodiment, the first load comprises DCI.

As a sub-embodiment of the above embodiment, the first load comprises a SCI.

As a sub-embodiment of the above embodiment, the first payload comprises a system message.

As a sub-embodiment of the above embodiment, the channel coding includes a low density parity-check code (LDPC).

As a sub-embodiment of the above embodiment, the channel coding comprises a polar code (PolarCode).

As an embodiment, for a given modulation scheme adopted by the first signal, the transmission energy of the first signal in one time frequency unit in the first set of time frequency units is independent of the bits in the first bit block.

As an embodiment, for a given modulation scheme adopted by the first signal, the transmission energy of the first signal in one time-frequency unit in the first set of time-frequency units is independent of the load carried in the first bit block.

For one embodiment, the waveform processing includes multicarrier waveform processing.

For one embodiment, the waveform processing includes OFDM waveform processing.

As one embodiment, the waveform processing includes Filter bank multi-Carrier (FBMC) waveform processing.

For one embodiment, the waveform processing includes single carrier waveform processing.

For one embodiment, the waveform processing includes SC-FDMA waveform processing.

For one embodiment, the waveform processing includes DFT-s-OFDM waveform processing.

For one embodiment, the waveform processing includes SC-QAM waveform processing.

For one embodiment, the waveform processing includes CP-SC waveform processing.

For one embodiment, the first signal may be configured in at least two waveform processing modes.

For one embodiment, the first signal may be configured as a multi-carrier waveform processing or a single-carrier waveform processing.

For one embodiment, the first signal may be configured for OFDM waveform processing or DFT-s-OFDM waveform processing.

For one embodiment, the first signal may be configured for OFDM waveform processing or SC-FDMA waveform processing.

For one embodiment, the first signal may be configured for OFDM waveform processing or SC-QAM waveform processing.

For one embodiment, the first signal may be configured for OFDM waveform processing or CP-SC waveform processing.

Example 8

Embodiment 8 illustrates a schematic diagram of a waveform processing according to an embodiment of the present application, as shown in fig. 8. The waveform processing comprises four steps of DFT preprocessing, resource mapping, inverse Fourier transform and CP adding, wherein the DFT preprocessing and the CP adding are optional.

As one embodiment, the inverse Fourier Transform comprises an Inverse Fast Fourier Transform (IFFT).

As one embodiment, the DFT preprocessing includes transform precoding (transformcoding).

As one embodiment, the waveform processing includes DFT-s-OFDM waveform processing including at least the first three of DFT preprocessing, resource mapping, inverse fourier transforming, and CP adding.

For one embodiment, the waveform processing comprises SC-FDMA waveform processing comprising at least the first three of DFT preprocessing, resource mapping, inverse Fourier transform, and CP adding.

As an embodiment, the waveform processing is OFDM waveform processing, which includes at least the first two of three steps of resource mapping, inverse fourier transform, and CP addition.

As one embodiment, the DFT pre-processing is enabled (enabled) when the first signal is processed with a DFT-s-OFDM waveform.

As one embodiment, the DFT preprocessing is not enabled (disabled) when the first signal is processed with OFDM waveforms.

Example 9

Embodiment 9 illustrates a schematic diagram of a waveform processing according to an embodiment of the present application, as shown in fig. 9. The waveform processing comprises two steps of pulse shaping (PulseShaping) and CP adding, wherein the CP adding is optional.

As one embodiment, the waveform processing is SC-QAM waveform processing.

As one embodiment, the waveform processing is CP-SC waveform processing, which includes adding CP.

As an embodiment, the pulse shaping includes two steps of upsampling and filtering.

Example 10

Embodiment 10 illustrates a schematic diagram of a time-frequency resource unit occupied by a first signal and a second signal according to an embodiment of the present application, as shown in fig. 10. The occupation of resource elements in a resource block is illustrated in fig. 10, where the outer border represents the extent of a resource block in the time and frequency domain, and each small box represents a resource element. Fig. 10 exemplarily shows a schematic diagram of time-frequency resource units occupied by first signals of two users, that is, the time-frequency resource units occupied by the first signal of the first user and the time-frequency resource units occupied by the first signal of the second user. Fig. 10 also shows a schematic diagram of a time-frequency resource unit occupied by a demodulation reference signal included in the second signal.

As an embodiment, the demodulation reference signal included in the second signal is associated with the first signal of the first user and the first signal of the second user.

As an embodiment, the sentence "the demodulation reference signal included in the second signal is associated with the first signal of the first user and the first signal of the second user" includes the following meanings: the demodulation reference signals included in the second signal are used as the demodulation of the first signal of the first user and the first signal of the second user, respectively.

As an embodiment, the sentence "the demodulation reference signal included in the second signal is associated with the first signal of the first user and the first signal of the second user" includes the following meanings: the demodulation reference signal associated with the first signal of the first user and the demodulation reference signal associated with the first signal of the second user are the same.

As an embodiment, the sentence "the demodulation reference signal included in the second signal is associated with the first signal of the first user and the first signal of the second user" includes the following meanings: the demodulation reference signal associated with the first signal of the first user and the demodulation reference signal associated with the first signal of the second user are shared.

As an embodiment, the sentence "the demodulation reference signal included in the second signal is associated with the first signal of the first user and the first signal of the second user" includes the following meanings: the configuration of the demodulation reference signal associated with the first signal of the first user is the same as that of the demodulation reference signal associated with the first signal of the second user.

As an embodiment, the sentence "the demodulation reference signal included in the second signal is associated with the first signal of the first user and the first signal of the second user" includes the following meanings: the transmission energy of the demodulation reference signal associated with the first signal of the first user is the same as that of the demodulation reference signal associated with the first signal of the second user.

As an embodiment, the sentence "the demodulation reference signal included in the second signal is associated with the first signal of the first user and the first signal of the second user" includes the following meanings: the transmission power of the demodulation reference signal associated with the first signal of the first user is the same as the transmission power of the demodulation reference signal associated with the first signal of the second user.

Example 11

Embodiment 11 illustrates a schematic diagram of a time-frequency resource unit occupied by a first signal and a second signal according to an embodiment of the present application, as shown in fig. 11. The occupation of resource elements in a resource block is illustrated in fig. 11, where the outer border represents the extent of a resource block in the time and frequency domain, and each small box represents a resource element. In fig. 11, a schematic diagram of time-frequency resource units occupied by first signals of two users is exemplarily shown, that is, the time-frequency resource units occupied by the first signals of the first users and the time-frequency resource units occupied by the first signals of the second users. Fig. 11 also shows a schematic diagram of time-frequency resource units occupied by the demodulation reference signal associated with the first signal of the first user and the demodulation reference signal associated with the second signal of the second user.

As an embodiment, the demodulation reference signal associated with the first signal of the first user and the demodulation reference signal associated with the first signal of the second user are different.

As an embodiment, the demodulation reference signal associated with the first signal of the first user is located in a time-frequency resource range occupied by the first signal of the first user.

As an embodiment, the demodulation reference signal associated with the first signal of the second user is located in a time-frequency resource range occupied by the first signal of the second user.

As an embodiment, the demodulation reference signal associated with the first signal of the first user is located in the time-frequency resource range where the first signal of the second user is scheduled.

As an embodiment, the demodulation reference signal associated with the first signal of the second user is located in the time-frequency resource range where the first signal of the second user is scheduled.

Example 12

Embodiment 12 illustrates a block diagram of a processing apparatus used in a first node device, as shown in fig. 12. In embodiment 12, the first node apparatus processing apparatus 1200 includes a first receiver 1201 and a second receiver 1202.

For one embodiment, the first receiver 1201 includes at least one of the antenna 452, the transmitter/receiver 454, the multiple antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, and the data source 467 shown in fig. 4.

For one embodiment, the second receiver 1202 may include at least one of the antenna 452, the transmitter/receiver 454, the multi-antenna transmitter processor 457, the transmit processor 468, the controller/processor 459, the memory 460, and the data source 467 of fig. 4.

In embodiment 12, the first receiver 1201 receives a first signal; the second receiver 1202 receives a second signal comprising a demodulation reference signal associated with the first signal; the first signal occupies a first set of time-frequency units in a time-frequency domain, the second signal occupies a second set of time-frequency units in the time-frequency domain, the first set of time-frequency units comprises a positive integer number of time-frequency units, and the second set of time-frequency units comprises a positive integer number of time-frequency units; the average value of the transmission energy of the first signal in the time-frequency unit in the first time-frequency unit set is equal to first energy, the average value of the transmission energy of the second signal in the time-frequency unit in the second time-frequency unit set is equal to second energy, and the difference between the first energy and the second energy is related to the modulation mode adopted by the first signal.

For one embodiment, the first receiver 1201 receives first signaling, wherein the first signaling is used to determine the difference between the first energy and the second energy.

For one embodiment, the first receiver 1201 receives a second signaling; the second signaling is used for determining the first time-frequency unit set, the modulation and coding scheme adopted by the first signal is a first modulation and coding scheme, the first modulation and coding scheme belongs to a target modulation and coding scheme set, and the target modulation and coding scheme set comprises a positive integer number of modulation and coding schemes greater than 1; the target modulation coding scheme set is related to at least one of waveform processing used by the first signal or a frequency domain range of a time-frequency unit in the first time-frequency unit set in a frequency domain, the second signaling is used for determining the first modulation coding scheme in the target modulation coding scheme set, and the first modulation coding scheme is used for determining a modulation scheme adopted by the first signal.

For one embodiment, the first node apparatus 1200 is a user equipment.

As an embodiment, the first node apparatus 1200 is a relay node.

For one embodiment, the first node apparatus 1200 is a base station.

As an embodiment, the first node apparatus 1200 is a vehicle-mounted communication apparatus.

For one embodiment, the first node apparatus 1200 is a user equipment supporting V2X communication.

As an embodiment, the first node apparatus 1200 is a relay node supporting V2X communication.

As an embodiment, the first node apparatus 1300 is a base station apparatus supporting IAB.

Example 13

Embodiment 13 is a block diagram illustrating a processing apparatus used in a second node device, as shown in fig. 13. In fig. 13, the second node device processing apparatus 1300 includes a first transmitter 1301 and a second transmitter 1302.

For one embodiment, the first transmitter 1301 includes at least one of the antenna 420, the transmitter/receiver 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475, and the memory 476 of fig. 4 of the present application.

For one embodiment, the second transmitter 1302 includes at least one of the antenna 420, the transmitter/receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475, and the memory 476 of fig. 4 of the present application.

In embodiment 13, the first transmitter 1301 transmits a first signal; the second transmitter 1302 transmitting a second signal comprising a demodulation reference signal associated with the first signal; the first signal occupies a first set of time-frequency units in a time-frequency domain, the second signal occupies a second set of time-frequency units in the time-frequency domain, the first set of time-frequency units comprises a positive integer number of time-frequency units, and the second set of time-frequency units comprises a positive integer number of time-frequency units; the average value of the transmission energy of the first signal in the time-frequency unit in the first time-frequency unit set is equal to first energy, the average value of the transmission energy of the second signal in the time-frequency unit in the second time-frequency unit set is equal to second energy, and the difference between the first energy and the second energy is related to the modulation mode adopted by the first signal.

As an embodiment, said first signal is generated by a first sequence of modulation symbols being subjected to a waveform processing, said difference of said first energy and said second energy being related to said waveform processing used by said first signal.

As an embodiment, the first transmitter 1301 transmits a first signaling, wherein the first signaling is used to determine the difference of the first energy and the second energy.

As an embodiment, the constellation points included in the modulation scheme adopted by the first signal include two constellation points whose amplitudes are not equal, and the transmission energy of the first signal in one time-frequency unit in the first set of time-frequency units is equal to the average energy of all constellation points included in the modulation scheme adopted by the first signal.

For one embodiment, the first transmitter 1301 transmits a second signaling; the second signaling is used for determining the first time-frequency unit set, the modulation and coding scheme adopted by the first signal is a first modulation and coding scheme, the first modulation and coding scheme belongs to a target modulation and coding scheme set, and the target modulation and coding scheme set comprises a positive integer number of modulation and coding schemes greater than 1; the target modulation coding scheme set is related to at least one of waveform processing used by the first signal or a frequency domain range of a time-frequency unit in the first time-frequency unit set in a frequency domain, the second signaling is used for determining the first modulation coding scheme in the target modulation coding scheme set, and the first modulation coding scheme is used for determining a modulation scheme adopted by the first signal.

For one embodiment, the second node apparatus 1300 is a user equipment.

For one embodiment, the second node apparatus 1300 is a base station.

As an embodiment, the second node apparatus 1300 is a relay node.

As an embodiment, the second node apparatus 1300 is a user equipment supporting V2X communication.

As an embodiment, the second node apparatus 1300 is a base station apparatus supporting V2X communication.

As an embodiment, the second node apparatus 1300 is a relay node supporting V2X communication.

As an embodiment, the second node apparatus 1300 is a base station apparatus supporting IAB.

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. The first node device in the application includes but is not limited to wireless communication devices such as cell-phones, tablet computers, notebooks, network access cards, low power consumption devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircrafts, airplanes, unmanned aerial vehicles, and remote control airplanes. The second node device in the application includes but is not limited to wireless communication devices such as cell-phones, tablet computers, notebooks, network access cards, low power consumption devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircrafts, airplanes, unmanned aerial vehicles, and remote control airplanes. User equipment or UE or terminal in this application include but not limited to cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, aircraft, unmanned aerial vehicle, wireless communication equipment such as remote control aircraft. The base station device, the base station or the network side 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, an eNB, a gNB, a transmission and reception node TRP, a GNSS, a relay satellite, a satellite base station, an air base station, 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

1. A first node device for wireless communication, comprising:

a first receiver receiving a first signal;

a second receiver to receive a second signal, the second signal comprising a demodulation reference signal associated with the first signal;

the first signal occupies a first set of time-frequency units in a time-frequency domain, the second signal occupies a second set of time-frequency units in the time-frequency domain, the first set of time-frequency units comprises a positive integer number of time-frequency units, and the second set of time-frequency units comprises a positive integer number of time-frequency units; the average value of the transmission energy of the first signal in the time-frequency unit in the first time-frequency unit set is equal to first energy, the average value of the transmission energy of the second signal in the time-frequency unit in the second time-frequency unit set is equal to second energy, and the difference between the first energy and the second energy is related to the modulation mode adopted by the first signal; the first signal carries a transport block, or a code block, or a group of code blocks.

2. The first node apparatus of claim 1, comprising:

said first signal is generated from a first sequence of modulation symbols by waveform processing, said difference between said first energy and said second energy being related to said waveform processing used by said first signal.

3. The first node apparatus according to any one of claims 1 and 2, comprising:

the difference between the first energy and the second energy is related to a difference between a first power and a second power, wherein the first power is equal to a transmission power of the first signal in the first set of time-frequency units and the second power is equal to a transmission power of the second signal in the second set of time-frequency units.

4. The first node apparatus according to any one of claims 1 to 3, comprising:

a first receiver receives first signaling, wherein the first signaling is used to determine the difference of the first energy and the second energy.

5. The first node apparatus according to any one of claims 1 to 4, comprising:

the constellation points included in the modulation scheme adopted by the first signal include different amplitudes of two constellation points, and the transmission energy of the first signal in one time-frequency unit in the first time-frequency unit set is equal to the average energy of all constellation points included in the modulation scheme adopted by the first signal.

6. The first node device of any one of claims 1 to 5, comprising:

the first time frequency unit set comprises X time frequency units, the X time frequency units occupy the same time domain resources in the time domain, X is a positive integer greater than 1, and the sending energy of the first signals in the X time frequency units is equal.

7. The first node device of any of claims 2 to 6, wherein the first receiver receives second signaling; the second signaling is used for determining the first time-frequency unit set, the modulation and coding scheme adopted by the first signal is a first modulation and coding scheme, the first modulation and coding scheme belongs to a target modulation and coding scheme set, and the target modulation and coding scheme set comprises a positive integer number of modulation and coding schemes greater than 1; the target modulation coding scheme set is related to at least one of waveform processing used by the first signal or a frequency domain range of a time-frequency unit in the first time-frequency unit set in a frequency domain, the second signaling is used for determining the first modulation coding scheme in the target modulation coding scheme set, and the first modulation coding scheme is used for determining a modulation scheme adopted by the first signal.

8. A second node configured for wireless communication, comprising:

a first transmitter that transmits a first signal;

9. The second node of claim 8, wherein the first signal is generated from a first sequence of modulation symbols via waveform processing, and wherein the difference between the first energy and the second energy is related to the waveform processing used by the first signal.

10. The second node according to claim 8 or 9, wherein the difference between the first energy and the second energy relates to a difference between a first power and a second power, wherein the first power is equal to a transmission power of the first signal in the first set of time-frequency units and the second power is equal to a transmission power of the second signal in the second set of time-frequency units.

11. The second node according to any of claims 8-10, wherein the first transmitter transmits first signaling, wherein the first signaling is used for determining the difference of the first energy and the second energy.

12. The second node according to any of claims 8 to 11, wherein the constellation points included in the modulation scheme adopted by the first signal include two constellation points whose amplitudes are not equal, and the transmission energy of the first signal in one time-frequency unit in the first set of time-frequency units is equal to the average energy of all constellation points included in the modulation scheme adopted by the first signal.

13. The second node according to any of claims 8 to 12, wherein the first set of time-frequency units comprises X time-frequency units, the X time-frequency units occupy the same time-frequency resource in the time domain, X is a positive integer greater than 1, and the transmission energy of the first signal in the X time-frequency units respectively is equal.

14. The second node according to any of claims 8 to 13, wherein the first transmitter transmits second signaling; the second signaling is used for determining the first time-frequency unit set, the modulation and coding scheme adopted by the first signal is a first modulation and coding scheme, the first modulation and coding scheme belongs to a target modulation and coding scheme set, and the target modulation and coding scheme set comprises a positive integer number of modulation and coding schemes greater than 1; the target modulation coding scheme set is related to at least one of waveform processing used by the first signal or a frequency domain range of a time-frequency unit in the first time-frequency unit set in a frequency domain, the second signaling is used for determining the first modulation coding scheme in the target modulation coding scheme set, and the first modulation coding scheme is used for determining a modulation scheme adopted by the first signal.

15. A method of a first node used for wireless communication, comprising:

receiving a first signal;

16. The method of the first node of claim 15, wherein the first signal is generated from a first sequence of modulation symbols via waveform processing, and wherein the difference between the first energy and the second energy is related to the waveform processing used by the first signal.

17. The method of the first node according to claim 15 or 16, wherein the difference between the first energy and the second energy relates to a difference between a first power and a second power, wherein the first power is equal to a transmission power of the first signal in the first set of time-frequency units and the second power is equal to a transmission power of the second signal in the second set of time-frequency units.

18. The method of the first node according to any of claims 15-17, wherein a first signaling is received, wherein the first signaling is used for determining the difference of the first energy and the second energy.

19. The method of the first node according to any one of claims 15 to 18, wherein the constellation points included in the modulation scheme adopted by the first signal include two constellation points whose amplitudes are not equal, and the transmission energy of the first signal in one time-frequency unit in the first set of time-frequency units is equal to the average energy of all constellation points included in the modulation scheme adopted by the first signal.

20. The method of the first node according to any of claims 15 to 19, wherein the first set of time-frequency units comprises X time-frequency units, the X time-frequency units occupy the same time-frequency resource in the time domain, the X is a positive integer greater than 1, and the transmission energy of the first signals in the X time-frequency units respectively is equal.

21. The method of the first node according to any of claims 15-20, characterised by receiving second signalling; the second signaling is used for determining the first time-frequency unit set, the modulation and coding scheme adopted by the first signal is a first modulation and coding scheme, the first modulation and coding scheme belongs to a target modulation and coding scheme set, and the target modulation and coding scheme set comprises a positive integer number of modulation and coding schemes greater than 1; the target modulation coding scheme set is related to at least one of waveform processing used by the first signal or a frequency domain range of a time-frequency unit in the first time-frequency unit set in a frequency domain, the second signaling is used for determining the first modulation coding scheme in the target modulation coding scheme set, and the first modulation coding scheme is used for determining a modulation scheme adopted by the first signal.

22. A method of a second node used for wireless communication, comprising:

transmitting a first signal;

23. The method of the second node of claim 22, wherein the first signal is generated from a first sequence of modulation symbols via waveform processing, and wherein the difference between the first energy and the second energy is related to the waveform processing used by the first signal.

24. The method of the second node according to claim 22 or 23, wherein the difference between the first energy and the second energy relates to a difference between a first power and a second power, wherein the first power is equal to a transmission power of the first signal in the first set of time-frequency units and the second power is equal to a transmission power of the second signal in the second set of time-frequency units.

25. The method of the second node according to any of claims 22-24, wherein a first signaling is sent, wherein the first signaling is used for determining the difference of the first energy and the second energy.

26. The method according to any of claims 22 to 25, wherein the constellation points included in the modulation scheme adopted by the first signal include two constellation points whose amplitudes are not equal, and the transmission energy of the first signal in one time-frequency unit in the first set of time-frequency units is equal to the average energy of all constellation points included in the modulation scheme adopted by the first signal.

27. The method of the second node according to any of claims 22 to 26, wherein the first set of time-frequency units comprises X time-frequency units, the X time-frequency units occupy the same time-frequency resource in the time domain, X is a positive integer greater than 1, and the transmission energy of the first signal in the X time-frequency units respectively is equal.

28. A method at a second node according to any of claims 22-27, characterized by sending a second signalling; the second signaling is used for determining the first time-frequency unit set, the modulation and coding scheme adopted by the first signal is a first modulation and coding scheme, the first modulation and coding scheme belongs to a target modulation and coding scheme set, and the target modulation and coding scheme set comprises a positive integer number of modulation and coding schemes greater than 1; the target modulation coding scheme set is related to at least one of waveform processing used by the first signal or a frequency domain range of a time-frequency unit in the first time-frequency unit set in a frequency domain, the second signaling is used for determining the first modulation coding scheme in the target modulation coding scheme set, and the first modulation coding scheme is used for determining a modulation scheme adopted by the first signal.