CN114598431A

CN114598431A - Method and apparatus in a node used for wireless communication

Info

Publication number: CN114598431A
Application number: CN202011418369.6A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2022-06-07
Anticipated expiration: 2040-12-07
Also published as: CN114598431B

Abstract

A method and apparatus in a node used for wireless communication is disclosed. A first node receives a first information block and a first signal in a first set of time-frequency resources; wherein a first information block indicates a first transmission configuration parameter and a second transmission configuration parameter, which are used in common for receiving the first signal; the first transmission configuration parameter is used to determine a first reference signal; the second transmission configuration parameter is used to determine a second reference signal and a third reference signal; the second reference signal corresponds to a first quasi co-location relationship, and the third reference signal corresponds to a second quasi co-location relationship; whether a first set of conditions is satisfied is used to determine one of the second reference signal and the third reference signal for receiving the first signal. By the method, the flexibility of switching among different Doppler frequency shift elimination schemes can be improved, and overhead and time delay are reduced.

Description

Method and apparatus in a node used for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus for a wireless signal in a wireless communication system supporting a cellular network.

Background

In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of various application scenarios, research on New Radio interface (NR) technology (or fine Generation, 5G) is decided over 72 sessions of 3GPP (3rd Generation Partner Project) RAN (Radio Access Network), and standardization Work on NR is started over WI (Work Item) where NR passes through 75 sessions of 3GPP RAN.

The multi-antenna technology is a key technology in 3GPP (3rd Generation Partner Project) LTE (Long-term Evolution) system and NR (New Radio) system. Additional spatial degrees of freedom are obtained by configuring multiple antennas at a communication node, such as a base station or a UE (User Equipment). The plurality of antennas form a beam pointing to a specific direction through beam forming to improve communication quality. When a plurality of antennas belong to a plurality of TRPs (Transmission/Reception points)/panels, an additional diversity gain can be obtained using a spatial difference between different TRPs/panels. The beams formed by multi-antenna beamforming are generally narrow, and the beams of both communication parties need to be aligned for effective communication. When there is a mismatch between transmission/reception beams due to UE movement or the like, the communication quality is greatly degraded or even impossible to communicate, and therefore the beams need to be updated in a timely manner. In the NR protocol, a TCI (Transmission Configuration Indicator) is used to determine a Quasi-co-location (QCL) relationship of a physical channel, and the Quasi-co-location relationship is used to determine large-scale fading characteristics and reception beams of the physical channel. For PDSCH (Physical Downlink Shared Channel), the gNB (next generation Node B) configures a plurality of TCI states for the UE through RRC (Radio Resource Control) layer signaling and MAC-CE (Medium Access Control-Control Element) first, and then may indicate one of the TCI states to the UE from among the plurality of TCI states through a PDCCH (Physical Downlink Control Channel), and the UE determines the quasi-co-location relationship and the reception beam of the PDSCH using the TCI states.

Disclosure of Invention

Work items of WI (Work Item) of NR R17 are passed through #86 universal meetings in 3GPP RAN (Radio Access Network), which includes enhanced multi-TRP transmission to support HST (High Speed Train) -SFN (Single Frequency Network) scenarios. The inventors discovered through research that in the HST-SFN scenario, the main challenges encountered by signal transmission include the effect of doppler shift on receiver performance due to high speed mobility. Moreover, because different TRPs have different directions relative to the UE, the doppler shifts generated at the UE receiver by signals transmitted from different TRPs are different, and the UE receiver will receive multiple copies of signals with different center frequencies, which causes difficulty in receiving the signals.

In view of the above, the present application discloses a solution. It should be noted that, although the above description uses beamforming and HST-SFN scenario as an example, the present application is also applicable to other scenarios such as LTE multi-antenna system, medium and low speed mobile scenario, and achieves similar technical effects in beamforming and HST-SFN scenario. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to beamforming, HST-SFN scenario, LTE multi-antenna system and medium and low speed mobile scenario) also helps to reduce hardware complexity and cost. Without conflict, embodiments and features of embodiments in any node of the present application may be applied to any other node 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 the present 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 information block;

receiving a first signal in a first set of time-frequency resources;

wherein the first information block indicates a first transmission configuration parameter and a second transmission configuration parameter, which are used in common for receiving the first signal; the first transmission configuration parameter is used to determine a first reference signal; the second transmission configuration parameter is used to determine a second reference signal and a third reference signal; the second reference signal corresponds to a first quasi co-location relationship, and the third reference signal corresponds to a second quasi co-location relationship; when a first set of conditions is satisfied, only the second reference signal of the second and third reference signals is used to receive the first signal, the first and second signals having the first quasi co-location relationship therebetween; when the first set of conditions is not satisfied, only the third reference signal of the second and third reference signals is used to receive the first signal, the first and third reference signals having the second-type quasi-co-located relationship therebetween; the first set of conditions includes: the second reference signal is indicated to be transmitted in a second set of time-frequency resources.

As an embodiment, the characteristics of the above method include: the first signal is simultaneously transmitted by a TRP1 and a TRP2 in an SFN manner, the TRP1 and the TRP2 are two TRPs, respectively, and the first transmission configuration parameter and the second transmission configuration parameter are associated with the TRP1 and the TPR2, respectively.

As an embodiment, the characteristics of the above method include: the first reference signal is periodic, the second reference signal is not periodic, and the third reference signal is periodic; the second transmission configuration parameter comprises a first sub-parameter and a second sub-parameter, the first sub-parameter is used for indicating that the second transmission configuration parameter has a first quasi co-location relationship with the second reference signal, the second sub-parameter is used for indicating that the third transmission configuration parameter has a second quasi co-location relationship with the third reference signal, and whether the first condition set is satisfied is used for selecting one of the 'first quasi co-location relationship with the second reference signal' and the 'second quasi co-location relationship with the third reference signal' for determining the quasi co-location relationship of the first signal.

As an embodiment, the characteristics of the above method include: the second reference signal is pre-compensated for Doppler shift; the third reference signal is not pre-compensated for doppler shift; the quasi co-location parameter associated with the first quasi co-location relation comprises Doppler frequency shift; the quasi co-location relation parameters related to the second quasi co-location relation do not include Doppler frequency shift; the first quasi co-location relationship is associated with a first Doppler frequency shift elimination scheme, and the second quasi co-location relationship is associated with a second Doppler frequency shift elimination scheme; the first set of conditions is used to determine one of the first type of doppler shift cancellation scheme and the second type of doppler shift cancellation scheme to use for reception of the first signal by the first node.

As an embodiment, for the first type of doppler shift cancellation scheme, the cancellation of doppler shift is mainly performed by a network side device; for the second type of doppler shift cancellation scheme, the doppler shift cancellation is mainly performed by the terminal.

As an embodiment, for the first type of doppler shift cancellation scheme, the cancellation of doppler shift is mainly performed by a network side device; for the second type of doppler shift cancellation scheme, the cancellation of doppler shift is jointly completed by the network side device and the terminal.

As an example, the benefits of the above method include: the method supports flexible switching between two different Doppler frequency shift elimination schemes, and is favorable for improving the scheduling flexibility and enhancing the system performance because the different Doppler frequency shift elimination schemes are suitable for different network equipment capabilities and terminal capabilities, different channel scenes or different network deployments.

As an example, the benefits of the above method include: by determining one of the second reference signal and the third reference signal for reception of the first signal by whether the first condition set is satisfied, the use of dedicated explicit signaling is avoided, which is beneficial for saving overhead and reducing latency.

According to an aspect of the application, the above method is characterized in that the first signal and the first reference signal have the first quasi co-located relationship therebetween when the first condition set is not satisfied.

According to an aspect of the present application, the above method is characterized in that when the first condition set is satisfied, the first reference signal and the second reference signal have the first quasi-co-located relationship with the first signal in common.

According to one aspect of the application, the method described above is characterized by comprising:

receiving a second signal;

wherein the second signal is associated with a fourth reference signal; when a second condition set is met, the second signal and the second reference signal have the first quasi co-located relationship therebetween; when the second set of conditions is not satisfied, the second signal and the fourth reference signal have the first quasi co-located relationship therebetween; the second set of conditions includes: and time domain resources respectively occupied by the second signal and the first signal belong to a first time window.

As an embodiment, the characteristics of the above method include: the second set of conditions includes: and the time frequency resources respectively occupied by the second signal and the first signal are positioned in the same time slot.

As an embodiment, the characteristics of the above method include: the second set of conditions includes: time frequency resources occupied by the second signal and the first signal respectively have overlapping in time domain.

As an embodiment, the characteristics of the above method include: when the second set of conditions is satisfied, the second signal and the first signal both have a first quasi co-location relationship with the second reference signal.

As an embodiment, the characteristics of the above method include: the first quasi-co-location relationship in which the second signal is configured is ignored when the second set of conditions is satisfied.

As an embodiment, the characteristics of the above method include: when the second set of conditions is met, the first quasi co-location relationship with which the second signal is configured is replaced with the first quasi co-location relationship with which the first signal is configured, i.e. the second signal and the first signal are pre-compensated for the same doppler shift.

As an embodiment, the characteristics of the above method include: when the time frequency resources occupied by the second signal and the first signal are close to each other in time domain or overlap, if the doppler shift pre-compensation is performed on the second signal and the first signal respectively, the doppler shifts corresponding to the first signal and the second signal may be different, so that the first signal and the second signal cannot be processed by the same doppler shift compensation processing module, thereby increasing the complexity of signal processing.

As an example, the benefits of the above method include: two physical channels which are overlapped or closely spaced in the time domain are subjected to the same Doppler precompensation, so that the complexity of signal processing is favorably reduced.

According to an aspect of the present application, the method is characterized in that the time interval between the second set of time-frequency resources and the first set of time-frequency resources is a first time length; the first set of conditions includes: the first length of time is less than a first time threshold, the first time threshold comprising a positive integer number of lengths of time of multicarrier symbols.

According to an aspect of the application, the method is characterized in that the first quasi co-location relation is associated with a first set of quasi co-location parameters, the first set of quasi co-location parameters comprising doppler shifts.

According to one aspect of the application, the above method is characterized in that the third reference signal is periodic; the second quasi co-location relationship is different from the first quasi co-location relationship.

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

transmitting a first information block;

transmitting a first signal in a first set of time-frequency resources;

wherein the first information block indicates a first transmission configuration parameter and a second transmission configuration parameter, which are used in common for receiving the first signal; the first transmission configuration parameter is used to determine a first reference signal; the second transmission configuration parameter is used to determine a second reference signal and a third reference signal; the second reference signal corresponds to a first quasi co-location relationship, and the third reference signal corresponds to a second quasi co-location relationship; when a first set of conditions is satisfied, only the second reference signal of the second and third reference signals is used to receive the first signal, the first and second signals having the first quasi-co-located relationship therebetween; when the first set of conditions is not satisfied, only the third reference signal of the second and third reference signals is used to receive the first signal, the first and third reference signals having the second-type quasi-co-located relationship therebetween; the first set of conditions includes: the second reference signal is indicated to be transmitted in a second set of time-frequency resources.

transmitting a second signal;

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

a first receiver receiving a first information block;

the first receiver receives a first signal in a first set of time-frequency resources;

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

a first transmitter for transmitting a first information block;

the first transmitter transmits a first signal in a first set of time-frequency resources;

wherein the first information block indicates a first transmission configuration parameter and a second transmission configuration parameter, which are used in common for receiving the first signal; the first transmission configuration parameter is used to determine a first reference signal; the second transmission configuration parameter is used to determine a second reference signal and a third reference signal; the second reference signal corresponds to a first quasi co-location relationship, and the third reference signal corresponds to a second quasi co-location relationship; when a first set of conditions is satisfied, only the second reference signal of the second and third reference signals is used to receive the first signal, the first and second signals having the first quasi-co-located relationship therebetween; when the first set of conditions is not satisfied, only the third reference signal of the second and third reference signals is used to receive the first signal, the first and third signals having the second quasi-co-located relationship therebetween; the first set of conditions includes: the second reference signal is indicated to be transmitted in a second set of time-frequency resources.

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

the method is beneficial to switching between different Doppler frequency shift elimination schemes, improves the scheduling flexibility and enhances the adaptability to different channel scenes and different UE capabilities;

by implicitly indicating different doppler shift cancellation schemes, signaling overhead and latency are reduced;

the unified Doppler frequency domain pre-compensation processing is carried out on a plurality of different physical channels or signals with time domain overlapping, which is beneficial to reducing the signal processing complexity of the gNB and the UE.

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 of 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 illustrates a diagram of SFN transmission according to an embodiment of the present application;

fig. 7 shows a schematic diagram of signal transmission in an HST-SFN scenario according to an embodiment of the present application;

fig. 8 shows a schematic diagram of doppler shift pre-compensation in an SFN scenario according to an embodiment of the present application;

fig. 9 shows a schematic diagram of doppler shift pre-compensation in an SFN scenario according to an embodiment of the present application;

fig. 10 shows a schematic diagram of the first set of time-frequency resources and the second set of time-frequency resources according to an embodiment of the application;

fig. 11 shows a schematic diagram of time-frequency resources occupied by the second information block, the first set of time-frequency resources, and the second set of time-frequency resources according to an embodiment of the present application;

fig. 12 shows a schematic diagram of time-frequency resources occupied by the second information block, time-frequency resources occupied by the second reference signal, and time-frequency resources occupied by the first signal according to an embodiment of the present application;

fig. 13 is a schematic diagram illustrating time-frequency resources contained in time-frequency resources occupied by the first signal and the second signal, respectively, according to an embodiment of the present application;

FIG. 14 is a block diagram showing a processing arrangement for use in the first node;

fig. 15 shows a block diagram of a processing means for use in the second node.

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 information block in step 101 and a first signal in a first set of time-frequency resources in step 102. Wherein the first information block indicates a first transmission configuration parameter and a second transmission configuration parameter, which are used in common for receiving the first signal; the first transmission configuration parameter is used to determine a first reference signal; the second transmission configuration parameter is used to determine a second reference signal and a third reference signal; the second reference signal corresponds to a first quasi co-location relationship, and the third reference signal corresponds to a second quasi co-location relationship; when a first set of conditions is satisfied, only the second reference signal of the second and third reference signals is used to receive the first signal, the first and second signals having the first quasi-co-located relationship therebetween; when the first set of conditions is not satisfied, only the third reference signal of the second and third reference signals is used to receive the first signal, the first and third reference signals having the second-type quasi-co-located relationship therebetween; the first set of conditions includes: the second reference signal is indicated to be transmitted in a second set of time-frequency resources.

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

For one embodiment, the first information block includes one or more fields in a SCI.

For one embodiment, the first information block includes one or more fields in an SCI format.

As an embodiment, the first Information block includes UCI (Uplink Control Information).

For one embodiment, the first information block includes one or more fields in one UCI.

As an embodiment, the first information block includes one or more fields in a UCI format.

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

For one embodiment, the first information block includes one or more fields in one DCI.

As an embodiment, the first information block includes one or more fields in a DCI format.

As an embodiment, the first information block comprises higher layer signaling.

As an embodiment, the first information block comprises one or more fields of higher layer signaling.

As one embodiment, the first information block includes one or more fields in MAC layer signaling.

As an embodiment, the first information block includes a MAC-CE (MAC Control Element).

As one embodiment, the first information block includes one or more fields in RRC signaling.

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).

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

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

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

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

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

For one embodiment, the first signal includes control information.

As an example, the first signal includes SCI (Sidelink Control Information).

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

For one embodiment, the first signal includes one or more fields in a SCI format.

As an embodiment, the first signal includes UCI (Uplink Control Information).

For one embodiment, the first signal includes one or more fields in a UCI.

As an embodiment, the first signal includes one or more fields in a UCI format.

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

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

For one embodiment, the first signal includes one or more fields in one DCI format.

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 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 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 is transmitted in a licensed spectrum.

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

For one embodiment, the first signal includes a reference signal.

For one embodiment, the first signal includes an uplink reference signal.

For one embodiment, the first signal includes a downlink reference signal.

For one embodiment, the first signal includes a secondary link reference signal.

As one embodiment, the first Signal includes a Demodulation Reference Signal (DMRS).

For one embodiment, the first Signal includes a Channel State Information Reference Signal (CSI-RS).

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

As one embodiment, the first Signal includes a Tracking Reference Signal (TRS).

For one embodiment, the first Signal includes a Positioning Reference Signal (PRS).

As one embodiment, the first Signal includes a Sounding Reference Signal (SRS).

As an embodiment, the first Signal includes a sounding SSB (Synchronization Signal/Physical Broadcasting Channel Block, SS/PBCH Block, Synchronization/broadcast Channel Block).

As one embodiment, the first signal includes an upstream signal Configured with a Grant (Configured Grant).

For one embodiment, the first signal comprises a dynamically scheduled uplink signal.

In one embodiment, the first signal comprises a semi-statically scheduled uplink signal.

As one embodiment, the first signal includes a Configured granted PUSCH (CG-PUSCH).

As one embodiment, the first signal comprises a dynamically scheduled PUSCH.

As one embodiment, the first signal includes a semi-statically scheduled PUSCH.

As an embodiment, the first signal includes a group Common pdcch (group Common pdcch).

For one embodiment, the first signal comprises a semi-persistent scheduled signal.

As one embodiment, the first signal includes a semi-persistently scheduled PDSCH.

As one embodiment, the first signal is transmitted in SFN mode.

As one embodiment, the first signal is transmitted by at least one TRP.

In one embodiment, the first signal is transmitted in the first set of time-frequency resources by at least one transmit beam.

In one embodiment, the first signal is transmitted by the at least one transmission configuration parameter in the first set of time-frequency resources.

As an embodiment, the first signals respectively transmitted by the at least one TRP are the same.

As an embodiment, the first signals respectively transmitted by the at least one transmission configuration parameter are the same.

As one embodiment, the first transmission configuration parameter includes a spatial domain filter (spatial domain filter).

For one embodiment, the first transmission configuration parameter includes a tci (transmission configuration indicator).

As one embodiment, the first transmission configuration parameter includes a TCI status (TCI state).

For one embodiment, the first transmission configuration parameter includes a plurality of TCI states (TCI states).

As one embodiment, the first transmission configuration parameter includes TCI code bits (TCI Codepoint).

As one embodiment, the first transmission configuration parameter includes a plurality of TCI code bits (TCI code bits).

As one embodiment, the first transmission configuration parameter includes a Spatial correlation (Spatial relationship) parameter.

As one embodiment, the first transmission configuration parameter includes a plurality of Spatial correlation (Spatial relationship) parameters.

For one embodiment, the first transmission configuration parameter includes a QCL (Quasi-co-location) parameter.

For one embodiment, the first transmission configuration parameter includes a plurality of QCL (Quasi co-location) parameters.

As an embodiment, the first transmission configuration parameter is used to determine a transmit beam.

As an embodiment, the first transmission configuration parameter is used to determine a receive beam.

As an embodiment, the first transmission configuration parameter is used to determine a spatial transmit filter.

As an embodiment, the first transmission configuration parameter is used to determine a spatial receive filter.

As an embodiment, the first transmission configuration parameter is used to determine a Spatial correlation (Spatial relationship) relationship with a reference signal.

As an embodiment, the first transmission configuration parameter is used to determine a QCL relationship with a reference signal.

As a sub-embodiment of the above-mentioned embodiments, the one reference signal includes one of { SSB, CSI-RS, TRS, SRS, PTRS, DMRS }.

As one embodiment, the second transmission configuration parameter includes a spatial domain filter (spatial domain filter).

For one embodiment, the second transmission configuration parameter includes a tci (transmission configuration indicator).

For one embodiment, the second transmission configuration parameter includes a TCI status (TCI state).

For one embodiment, the second transmission configuration parameter includes a plurality of TCI states (TCI states).

As one embodiment, the second transmission configuration parameter includes TCI code bits (TCI Codepoint).

For one embodiment, the second transmission configuration parameter includes a plurality of TCI code bits (TCI code bits).

For one embodiment, the second transmission configuration parameter includes a Spatial correlation (Spatial relationship) parameter.

As an embodiment, the second transmission configuration parameter includes a plurality of Spatial correlation (Spatial relationship) parameters.

For one embodiment, the second transmission configuration parameter includes a QCL (Quasi-co-location) parameter.

For one embodiment, the second transmission configuration parameter includes a plurality of QCL (Quasi-co-location) parameters.

As an embodiment, the second transmission configuration parameter is used to determine a transmit beam.

As an embodiment, the second transmission configuration parameter is used for determining a reception beam.

As an embodiment, the second transmission configuration parameter is used to determine a spatial transmit filter.

As an embodiment, the second transmission configuration parameter is used to determine a spatial receive filter.

As an embodiment, the second transmission configuration parameter is used to determine a Spatial correlation (Spatial correlation) relationship with a reference signal.

As an embodiment, the second transmission configuration parameter is used to determine a QCL relationship with a reference signal.

For one embodiment, the QCL parameters include a QCL type.

As an embodiment, the QCL parameters include all or part of the large-scale features corresponding to the QCL type.

For one embodiment, the QCL parameters include a QCL relationship with another signal.

For one embodiment, the QCL parameters include a Spatial correlation (Spatial relationship) relationship with another signal.

As an embodiment, the specific definition of QCL is seen in section 5.1.5 in 3GPP TS 38.214.

As an example, having a QCL relationship between one signal and another signal means: all or part of large-scale (properties) characteristics of a wireless signal transmitted on an antenna port corresponding to the other signal can be deduced from all or part of large-scale (properties) characteristics of a wireless signal transmitted on an antenna port corresponding to the one signal.

As an example, one signal and the other signal being QCL means: all or part of large-scale (properties) characteristics of a wireless signal transmitted on an antenna port corresponding to the other signal can be deduced from all or part of large-scale (properties) characteristics of a wireless signal transmitted on an antenna port corresponding to the one signal.

As an example, the large scale characteristics of a wireless signal include one or more of { delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), path loss (path loss), average gain (average gain), average delay (average delay), and Spatial Rx parameters }.

As one embodiment, the Spatial Rx parameters (Spatial Rx parameters) include one or more of { receive beams, receive analog beamforming matrix, receive analog beamforming vector, receive Spatial filtering (Spatial filter), Spatial domain reception filtering (Spatial domain reception filter) }.

As an example, having a QCL relationship between one signal and another signal means: the one signal and the other signal have at least one same QCL parameter (QCL parameter).

As an example, one signal and the other signal being QCL means: the one signal and the other signal have at least one same QCL parameter (QCL parameter).

As an embodiment, the QCL parameters include: { delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), path loss (path loss), average gain (average gain), average delay (average delay), Spatial Rx parameters }.

As an example, having a QCL relationship between one signal and another signal means: at least one QCL parameter of the other signal can be inferred from the at least one QCL parameter of the one signal.

As an example, one signal and the other signal being QCL means: at least one QCL parameter of the other signal can be inferred from the at least one QCL parameter of the one signal.

As an embodiment, the QCL type (QCL type) between one signal and another signal being QCL type D (QCL-type) means that: the Spatial Rx parameters (Spatial Rx parameters) of the wireless signal transmitted on the antenna port corresponding to the other signal can be inferred from the Spatial Rx parameters (Spatial Rx parameters) of the wireless signal transmitted on the antenna port corresponding to the one signal.

As an embodiment, the QCL type between one signal and another signal is QCL type a (QCL-type a) means that: the delay spread (delay spread), the Doppler spread (Doppler spread), the Doppler shift (Doppler shift), and the average delay (average delay)) of the wireless signal transmitted through the antenna port corresponding to the other signal can be deduced from the delay spread (delay spread), the Doppler spread (Doppler spread), the Doppler shift (Doppler shift), and the average delay (average delay)) of the wireless signal transmitted through the antenna port corresponding to the other signal.

As an embodiment, the QCL type between one signal and another signal being QCL type E (QCL-type) means: the delay spread (delay spread), the average delay (average delay)) of the wireless signal transmitted on the antenna port corresponding to the other signal can be deduced from the delay spread (delay spread), the average delay (average delay)) of the wireless signal transmitted on the antenna port corresponding to the one signal.

As an embodiment, the QCL type (QCL type) between one signal and another signal being QCL-type means: the one reference signal and the other reference signal can be received with the same Spatial Rx parameters (Spatial Rx parameters).

As an embodiment, the one signal and the other signal are QCL, meaning that the one signal and the other signal have a Spatial correlation (Spatial correlation) relationship.

As an example, having a Spatial correlation (Spatial correlation) relationship between one signal and another signal means: transmitting the other signal with a spatial filter that receives the one signal.

As an example, having a Spatial correlation (Spatial correlation) relationship between one signal and another signal means: receiving the other signal with a spatial filter that transmits the one signal.

As an embodiment, the first set of time-frequency resources includes a positive integer number of Resource Elements (REs) in a frequency domain.

As an embodiment, the first set of time-frequency resources includes a positive integer number of Resource Blocks (RBs) in the frequency domain.

As an embodiment, the first set of time-frequency resources includes a positive integer number of Resource Block Groups (RBGs) in the frequency domain.

As an embodiment, the first set of time-frequency resources includes a positive integer number of Control Channel Elements (CCEs) in a frequency domain.

As an embodiment, the first set of time-frequency resources includes a positive integer number of multicarrier symbols in the time domain.

For one embodiment, the first set of time-frequency resources includes a positive integer number of time slots in the time domain.

As an embodiment, the first set of time-frequency resources includes a positive integer number of subframes in the time domain.

As an embodiment, the first set of time-frequency resources includes a plurality of consecutive multicarrier symbols in the time domain.

As an embodiment, the first set of time-frequency resources includes a plurality of non-contiguous multicarrier symbols in the time domain.

As an embodiment, the first set of time-frequency resources includes a plurality of consecutive resource blocks in the frequency domain.

As an embodiment, the first set of time-frequency resources includes a plurality of discontinuous resource blocks in a frequency domain.

As an embodiment, the second set of time-frequency resources includes a positive integer number of Resource Elements (REs) in the frequency domain.

As an embodiment, the second set of time-frequency resources includes a positive integer number of Resource Blocks (RBs) in the frequency domain.

As an embodiment, the second set of time-frequency resources includes a positive integer number of Resource Block Groups (RBGs) in the frequency domain.

As an embodiment, the second set of time-frequency resources includes a positive integer number of Control Channel Elements (CCEs) in the frequency domain.

As an embodiment, the second set of time-frequency resources comprises a positive integer number of multicarrier symbols in the time domain.

In one embodiment, the second set of time-frequency resources includes a positive integer number of time slots in the time domain.

As an embodiment, the second set of time-frequency resources comprises a positive integer number of subframes in the time domain.

As an embodiment, the second set of time-frequency resources comprises a plurality of consecutive multicarrier symbols in the time domain.

As an embodiment, the second set of time-frequency resources comprises a plurality of non-contiguous multicarrier symbols in the time domain.

As an embodiment, the second set of time-frequency resources comprises a plurality of consecutive resource blocks in the frequency domain.

As an embodiment, the second set of time-frequency resources includes a plurality of discontinuous resource blocks in the frequency domain.

As an embodiment, the multicarrier symbol comprises an OFDM (orthogonal Frequency division Multiplexing) symbol.

As an embodiment, the multi-carrier symbols comprise DFT-s-OFDM (Discrete Fourier Transform-Spread-OFDM) symbols.

As an embodiment, the multicarrier symbol comprises an SC-FDMA (Single-carrier Frequency-Division Multiple Access) symbol.

As one embodiment, the multicarrier symbol comprises an FBMC (Filter Bank Multi-Carrier) symbol.

As one embodiment, the first reference Signal includes a SS (Synchronization Signal)/PBCH (Physical Broadcasting Channel) block.

As one embodiment, the first reference Signal includes SSB (Synchronization Signal/PBCH block, Synchronization Signal and broadcast Signal block).

For one embodiment, the first reference signal includes a CSI-RS.

For one embodiment, the first reference signal includes CSI-RS resources.

For one embodiment, the first reference signal includes at least one antenna port of one CSI-RS resource.

In one embodiment, the first reference signal includes an SRS.

In one embodiment, the first reference signal includes SRS resources.

As one embodiment, the first reference signal includes a DMRS.

As one embodiment, the first reference signal includes a TRS.

As one embodiment, the first reference signal includes a PTRS.

As one embodiment, the second reference Signal includes a SS (Synchronization Signal)/PBCH (Physical Broadcasting Channel) block.

As one embodiment, the second reference Signal includes SSB (Synchronization Signal/PBCH block, Synchronization Signal and broadcast Signal block).

For one embodiment, the second reference signal includes a CSI-RS.

For one embodiment, the second reference signal includes CSI-RS resources.

For one embodiment, the second reference signal includes at least one antenna port of one CSI-RS resource.

In one embodiment, the second reference signal includes an SRS.

In one embodiment, the second reference signal includes SRS resources.

As one embodiment, the second reference signal includes a DMRS.

As one embodiment, the second reference signal includes a TRS.

As one embodiment, the second reference signal includes a PTRS.

As an embodiment, the third reference Signal includes a SS (Synchronization Signal)/PBCH (Physical Broadcasting Channel) block.

As one embodiment, the third reference Signal includes SSB (Synchronization Signal/PBCH block, Synchronization Signal and broadcast Signal block).

For one embodiment, the third reference signal includes a CSI-RS.

For one embodiment, the third reference signal includes CSI-RS resources.

As an embodiment, the third reference signal includes at least one antenna port of one CSI-RS resource.

In one embodiment, the third reference signal includes an SRS.

In one embodiment, the third reference signal includes SRS resources.

As one embodiment, the third reference signal comprises a DMRS.

As one embodiment, the third reference signal includes a TRS.

As one embodiment, the third reference signal includes a PTRS.

As one embodiment, the fourth reference Signal includes a SS (Synchronization Signal)/PBCH (Physical Broadcasting Channel) block.

As one embodiment, the fourth reference Signal includes SSB (Synchronization Signal/PBCH block, Synchronization Signal and broadcast Signal block).

For one embodiment, the fourth reference signal includes a CSI-RS.

For one embodiment, the fourth reference signal includes CSI-RS resources.

For an embodiment, the fourth reference signal includes at least one antenna port of one CSI-RS resource.

As an embodiment, the fourth reference signal includes an SRS.

In one embodiment, the fourth reference signal includes SRS resources.

As one embodiment, the fourth reference signal includes a DMRS.

As one embodiment, the fourth reference signal includes a TRS.

For one embodiment, the fourth reference signal includes a PTRS.

As an embodiment, the first transmission configuration parameter being used for determining the first reference signal comprises the first transmission configuration parameter being indicative of the first reference signal.

As an embodiment, the first transmission configuration parameter being used for determining the first reference signal comprises the first transmission configuration parameter indicating a QCL relationship with the first reference signal.

As an embodiment, the second transmission configuration parameter used to determine the second reference signal and the third reference signal comprises the second transmission configuration parameter indicating the second reference signal and the third reference signal.

As an embodiment, the second transmission configuration parameter used to determine the second reference signal and the third reference signal includes the second transmission configuration parameter indicating a QCL relationship with the second reference signal and a QCL relationship with the third reference signal.

As one embodiment, the first information block is RRC signaling used to configure a TCI state.

As an embodiment, the first information block is a MAC-CE used to configure TCI status.

As one embodiment, the first transmission configuration parameter and the second transmission configuration parameter are both TCI code bits.

As an embodiment, the first quasi co-location relationship is QCL type a.

For one embodiment, the second type of quasi co-location relationship is QCL type E.

In one embodiment, the quasi-co-location parameter associated with the first quasi-co-location relationship includes at least one of { doppler shift, doppler spread }.

In one embodiment, the quasi-co-location parameters associated with the second type of quasi-co-location relation do not include doppler shift and doppler spread.

As an embodiment, the sentence "only the second reference signal of the second reference signal and the third reference signal is used to receive the first signal" includes: the first quasi co-location relationship associated with only the second reference signal of the second and third reference signals is used to receive the first signal.

As an embodiment, the sentence "only the second reference signal of the second reference signal and the third reference signal is used to receive the first signal" includes: the second type of quasi-co-location relationship associated with the third reference signal is not used for receiving the first signal.

As an embodiment, the sentence "only the third reference signal of the second reference signal and the third reference signal is used to receive the first signal" includes: the second quasi co-location relationship associated with only the third reference signal of the second and third reference signals is used to receive the first signal.

As an embodiment, the sentence "only the third reference signal of the second reference signal and the third reference signal is used to receive the first signal" includes: the first quasi-co-location relationship associated with the second reference signal is not used to receive the first signal.

As an embodiment, whether the first set of conditions is satisfied is used to determine one of the second reference signal and the third reference signal for receiving the first signal.

As an embodiment, whether the first set of conditions is satisfied is used to determine one of the first type of quasi co-located relationship and the second type of quasi co-located relationship indicated by the second transmission configuration parameter for receiving the first 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 for 5G NR, LTE (Long-Term Evolution), and LTE-a (Long-Term Evolution-enhanced) 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 allocation 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 this application includes the gNB 203.

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 UE 241.

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.

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 node (RSU in UE or V2X, car equipment or car communication module) and the second node (gNB, RSU in UE or V2X, car equipment or car communication module) 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 the PHY301, and is responsible for the links between the first and second nodes and the two UEs through the 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 node. The PDCP sublayer 304 provides data ciphering and integrity protection, and the PDCP sublayer 304 also provides handover support for a second node by a first node. The RLC sublayer 303 provides segmentation and reassembly of packets, retransmission of missing packets by ARQ, and the RLC sublayer 303 also provides duplicate packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell between the first nodes. 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 node and the first node. The radio protocol architecture of the user plane 350 includes layer 1(L1 layer) and layer 2(L2 layer), the radio protocol architecture in the user plane 350 for the first and second nodes is 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 node 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, at least one of the first signal and the second signal in the present application is generated in the PHY 351.

As an embodiment, at least one of the first signal and the second signal in this application is generated in the MAC 352.

As an embodiment, at least one of the first signal and the second signal in the present application is generated in the PHY 301.

As an embodiment, at least one of the first signal and the second signal in the present application is generated in the MAC 302.

As an embodiment, at least one of the first signal and the second signal in this application is generated in the RRC 306.

As an embodiment, at least one of the first information block and the second information block in the present application is generated in the PHY 351.

As an embodiment, at least one of the first information block and the second information block in the present application is generated in the MAC 352.

As an embodiment, at least one of the first information block and the second information block in the present application is generated in the PHY 301.

As an embodiment, at least one of the first information block and the second information block in the present application is generated in the MAC 302.

As an embodiment, at least one of the first information block and the second information block in the present 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 and 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 rf signals through its respective antenna 420, converts the received rf signals to baseband signals, and provides the baseband signals 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 an embodiment, the first node in this application includes the first communication device 410, and the second node in this application includes the second communication device 450.

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

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 information block; receiving a first signal in a first set of time-frequency resources; wherein the first information block indicates a first transmission configuration parameter and a second transmission configuration parameter, which are used in common for receiving the first signal; the first transmission configuration parameter is used to determine a first reference signal; the second transmission configuration parameter is used to determine a second reference signal and a third reference signal; the second reference signal corresponds to a first quasi co-location relationship, and the third reference signal corresponds to a second quasi co-location relationship; when a first set of conditions is satisfied, only the second reference signal of the second and third reference signals is used to receive the first signal, the first and second signals having the first quasi-co-located relationship therebetween; when the first set of conditions is not satisfied, only the third reference signal of the second and third reference signals is used to receive the first signal, the first and third reference signals having the second-type quasi-co-located relationship therebetween; the first set of conditions includes: the second reference signal is indicated to be transmitted in a second set of time-frequency resources.

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 information block; receiving a first signal in a first set of time-frequency resources; wherein the first information block indicates a first transmission configuration parameter and a second transmission configuration parameter, which are used in common for receiving the first signal; the first transmission configuration parameter is used to determine a first reference signal; the second transmission configuration parameter is used to determine a second reference signal and a third reference signal; the second reference signal corresponds to a first quasi co-location relationship, and the third reference signal corresponds to a second quasi co-location relationship; when a first set of conditions is satisfied, only the second reference signal of the second and third reference signals is used to receive the first signal, the first and second signals having the first quasi-co-located relationship therebetween; when the first set of conditions is not satisfied, only the third reference signal of the second and third reference signals is used to receive the first signal, the first and third reference signals having the second-type quasi-co-located relationship therebetween; the first set of conditions includes: the second reference signal is indicated to be transmitted in a second set of time-frequency resources.

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 information block; transmitting a first signal in a first set of time-frequency resources; wherein the first information block indicates a first transmission configuration parameter and a second transmission configuration parameter, which are used in common for receiving the first signal; the first transmission configuration parameter is used to determine a first reference signal; the second transmission configuration parameter is used to determine a second reference signal and a third reference signal; the second reference signal corresponds to a first quasi co-location relationship, and the third reference signal corresponds to a second quasi co-location relationship; when a first set of conditions is satisfied, only the second reference signal of the second and third reference signals is used to receive the first signal, the first and second signals having the first quasi-co-located relationship therebetween; when the first set of conditions is not satisfied, only the third reference signal of the second and third reference signals is used to receive the first signal, the first and third reference signals having the second-type quasi-co-located relationship therebetween; the first set of conditions includes: the second reference signal is indicated to be transmitted in a second set of time-frequency resources.

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 information block; transmitting a first signal in a first set of time-frequency resources; wherein the first information block indicates a first transmission configuration parameter and a second transmission configuration parameter, which are used in common for receiving the first signal; the first transmission configuration parameter is used to determine a first reference signal; the second transmission configuration parameter is used to determine a second reference signal and a third reference signal; the second reference signal corresponds to a first quasi co-location relationship, and the third reference signal corresponds to a second quasi co-location relationship; when a first set of conditions is satisfied, only the second reference signal of the second and third reference signals is used to receive the first signal, the first and second signals having the first quasi-co-located relationship therebetween; when the first set of conditions is not satisfied, only the third reference signal of the second and third reference signals is used to receive the first signal, the first and third reference signals having the second-type quasi-co-located relationship therebetween; the first set of conditions includes: the second reference signal is indicated to be transmitted in a second set of time-frequency resources.

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 is used to receive at least one of the first signal and the second signal in this 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 in this application to transmit at least one of the first signal and the second signal.

As an 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 is used for receiving at least one of the first information block and the second information block in this 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 in this application to transmit at least one of the first information block and the second information block.

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 order of the steps in the blocks does not represent a specific chronological relationship between the individual steps.

In embodiment 5, for the second node U2, the first information block is transmitted in step S21, the first signal is transmitted in step S22, and the second signal is transmitted in step S23; for the first node U1, a first block of information is received in step S11, a first signal is received in step S12, and a second signal is received in step S13. Among them, step S23 and step S13 in the block F51 are optional.

In embodiment 5, the first node U1 receives a first information block; the first node U1 receives a first signal in a first set of time-frequency resources; wherein the first information block indicates a first transmission configuration parameter and a second transmission configuration parameter, which are used in common for receiving the first signal; the first transmission configuration parameter is used to determine a first reference signal; the second transmission configuration parameter is used to determine a second reference signal and a third reference signal; the second reference signal corresponds to a first quasi co-location relationship, and the third reference signal corresponds to a second quasi co-location relationship; when a first set of conditions is satisfied, only the second reference signal of the second and third reference signals is used to receive the first signal, the first and second signals having the first quasi-co-located relationship therebetween; when the first set of conditions is not satisfied, only the third reference signal of the second and third reference signals is used to receive the first signal, the first and third reference signals having the second-type quasi-co-located relationship therebetween; the first set of conditions includes: the second reference signal is indicated to be transmitted in a second set of time-frequency resources.

Optionally, in embodiment 5, the first node U1 receives a second signal; wherein the second signal is associated with a fourth reference signal; when a second condition set is met, the second signal and the second reference signal have the first quasi co-located relationship therebetween; when the second set of conditions is not satisfied, the second signal and the fourth reference signal have the first quasi co-located relationship therebetween; the second set of conditions includes: and time domain resources respectively occupied by the second signal and the first signal belong to a first time window.

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

Example 6

Embodiment 6 illustrates a schematic diagram of SFN transmission according to an embodiment of the present application, as shown in fig. 6. In fig. 6, TRP1 and TRP2 simultaneously transmit wireless signals to a UE. Wherein, the TRP1 transmits a wireless signal to the UE through the transmission beam 1, and the TRP2 transmits a wireless signal to the UE through the transmission beam 2. In embodiment 6, the first transmission configuration parameter in this application is used to determine the transmission beam 1, and the second transmission configuration parameter is used to determine the transmission beam 2. In example 6, SFN and multi-TRP space division multiplexing are different in that: in the SFN mode, antenna ports of TRP1 and TRP2 for transmitting wireless signals are the same for the UE, and wireless signals transmitted by TRP1 and TRP2 are the same; in the multi-TRP spatial multiplexing scheme, antenna ports for transmitting radio signals from TRP1 and TRP2 are different, and radio signals transmitted from TRP1 and TRP2 may be different.

As an embodiment, the first signal is simultaneously transmitted by Q1 third nodes, the Q1 being a positive integer greater than 2.

As a sub-embodiment of the above embodiment, the Q1 is a positive integer no greater than 1024.

As a sub-embodiment of the above embodiment, the Q1 is 2.

As a sub-embodiment of the above embodiment, the Q1 third nodes have the same cell index (cell ID).

As a sub-embodiment of the above embodiment, the Q1 third nodes have different cell indexes (cell IDs).

As a sub-embodiment of the above embodiment, the third node comprises a TRP.

As a sub-embodiment of the foregoing embodiment, the third node includes an RRU (Remote Radio Unit).

As a sub-embodiment of the above embodiment, the third node includes an RRH (Remote Radio Head).

As a sub-embodiment of the above embodiment, the third node comprises an AAU (Active Antenna Unit).

As a sub-embodiment of the above embodiment, the third node comprises a BBU (BaseBand Unit).

As a sub-embodiment of the above embodiment, the third node comprises a gNB.

As a sub-embodiment of the above embodiment, the third node comprises a DU (Distributed Unit) of a gNB.

As a sub-embodiment of the above embodiment, the third node comprises a Central Unit (CU) of a gNB.

For one embodiment, the second nodes include the Q1 third nodes.

For one embodiment, the second node comprises at least one of the Q1 third nodes.

As one embodiment, the first information block includes first indication information used to determine that the transmission mode of the first signal is SFN.

As an embodiment, Q1 transmission configuration parameters are used to determine Q1 transmit beams for the second node, the first transmission configuration parameter and the second transmission configuration parameter each being one of the Q1 transmission configuration parameters.

As an embodiment, when the first set of conditions is satisfied, the first reference signal and the first signal have a second-type quasi-co-located relationship therebetween.

As an embodiment, the second reference signal is transmitted in SFN when the first set of conditions is satisfied.

As one embodiment, when the first set of conditions is satisfied, only a second reference signal and the first signal of the first, second, and third reference signals have a first quasi-co-located relationship.

As an embodiment, the second reference signal is associated to at least 2 transmission configuration parameters, the at least 2 transmission configuration parameters being used for receiving the second reference signal.

As an embodiment, the first receiver receives a second information block, the second information block being used to determine the second set of time-frequency resources; the second information block is group-common.

As an embodiment, the second type of quasi co-location relationship is associated with a second set of quasi co-location parameters, the second set of quasi co-location parameters not including doppler shift.

For one embodiment, the second reference signal and the third reference signal have a quasi-co-located relationship of a third kind.

As an embodiment, the second reference signal and the third reference signal have a third quasi-co-location relationship therebetween, and the third quasi-co-location relationship is used for receiving the second reference signal.

As an embodiment, the third quasi co-location relationship is the same as the second quasi co-location relationship.

As an embodiment, the third quasi co-location relationship and the second quasi co-location relationship are different.

For one embodiment, the third class of quasi co-location relationships includes QCL parameters.

As an embodiment, the QCL parameters included in the quasi-co-location relationship of the third type do not include doppler shift and doppler spread.

As an embodiment, the first quasi co-location parameter set, the second quasi co-location parameter set and the third quasi co-location parameter set each include one quasi co-location parameter.

Example 7

Embodiment 7 illustrates a schematic diagram of signal transmission in an HST-SFN scenario according to an embodiment of the present application, as shown in fig. 7. In fig. 7, TRP1 and TRP2 simultaneously transmit wireless signals to a UE located in a high speed train. In embodiment 7, the TRP1 transmits a first reference signal and a first signal to a UE located in a high-speed train, respectively, and the TRP2 transmits a second reference signal, a third reference signal, and the first signal to a UE located in a high-speed train, respectively. In embodiment 7, the transmission of the second reference signal is optional.

As an embodiment, the first reference signal is used for tracking of reception timing and reception frequency.

As an embodiment, the second reference signal is used for tracking of reception timing and reception frequency.

As an embodiment, the third reference signal is used for tracking of reception timing and reception frequency.

As an embodiment, the first reference signal is indicative of a configuration parameter trs-Info.

As an embodiment, the second reference signal is indicative of a configuration parameter trs-Info.

As an embodiment, the third reference signal is indicative of a configuration parameter trs-Info.

As an embodiment, the first reference signal, the second reference signal, and the third reference signal are all CSI-RSs.

As an embodiment, the first reference signal, the second reference signal, and the third reference signal are TRSs.

As an embodiment, the first, second and third reference signals are all DMRSs.

As an embodiment, the first, second and third reference signals are all DMRS of the first signal.

As one embodiment, the first reference signal, the second reference signal, and the third reference signal are orthogonal in the time-frequency domain.

As an embodiment, the first reference signal and the third reference signal are not pre-compensated for doppler shift, and the second reference signal is pre-compensated for doppler shift.

As an embodiment, the first reference signal, the second reference signal and the third reference signal are all doppler shift pre-compensated.

As an embodiment, none of the first reference signal, the second reference signal, and the third reference signal is pre-compensated for doppler shift.

As an embodiment, the second reference signal is transmitted in SFN manner, and the first reference signal and the third reference signal are not transmitted in SFN manner.

As one embodiment, the first reference signal, the second reference signal, and the third reference signal are each periodic (periodic).

As an embodiment, the first reference signal and the third reference signal are both periodic and the second reference signal is not periodic.

As an embodiment, the second reference signal is semi-persistent.

As one embodiment, the second reference signal is non-periodic (aperiodic).

As an embodiment, that one reference signal is periodic means that, after the one reference signal is configured, the one reference signal is periodically transmitted in multiple sets of time-frequency resources, and any 2 sets of time-frequency resources in the multiple sets of time-frequency resources have the same time interval in the time domain.

In one embodiment, the second set of time-frequency resources is located before the first set of time-frequency resources in the time domain.

In one embodiment, the second set of time-frequency resources is located in the nth time slot before the first set of time-frequency resources in the time domain, where N is an integer greater than 0 and less than 1025.

In an embodiment, the second set of time-frequency resources and the first set of time-frequency resources are located in the same timeslot.

As an embodiment, in the scenario shown in embodiment 7, TRP1 and TRP2 are located in different directions of a high-speed train, so that the doppler shifts generated at the receiver of the UE in the high-speed train by the wireless signals respectively transmitted by TRP1 and TRP2 are different.

Example 8

Embodiment 8 illustrates a schematic diagram of doppler shift pre-compensation in an SFN scenario according to an embodiment of the present application, as shown in fig. 8. In fig. 8, the left picture shows a schematic diagram of the frequency ranges occupied by the two wireless signals respectively transmitted by the TRP1 and TRP2 at the UE receiver without performing doppler shift pre-compensation, wherein the vertical and horizontal striped boxes show schematic diagrams of the frequency ranges occupied by the two wireless signals respectively transmitted by the TRP1 and TRP2 at the UE receiver; the center frequency corresponding to the wireless signal transmitted by the TRP1 is f0+ fd1, and the center frequency corresponding to the wireless signal transmitted by the TRP2 is f0+ fd 2; wherein f0 represents the center transmission frequency of TRP1 and TRP2 (i.e. the center transmission frequency of TRP1 and TRP2 are the same), fd1 represents the Doppler shift generated at the UE receiver by the wireless signal transmitted by TRP1, and fd2 represents the Doppler shift generated at the UE receiver by the wireless signal transmitted by TRP 2. In fig. 8, the right picture shows a schematic diagram of frequency ranges occupied by two wireless signals transmitted by two TRPs after doppler shift pre-compensation at the UE receiver, wherein the frequency ranges of the wireless signals transmitted by TRP1 and TRP2 at the UE receiver are overlapped, and their center frequencies are both f0+ fd3, where fd3 shows residual frequency offset after doppler shift pre-compensation. The f0, the fd1, the fd2 and the fd3 are real numbers in hertz.

As an example, the fd3 is equal to the fd 1.

As an example, when doppler pre-compensation is employed, the first signal transmitted by TRP1 is not doppler pre-compensated; the first signal transmitted by TRP2 is Doppler-shifted pre-compensated, and TRP2 is Doppler-shifted pre-compensated by frequency offsets fd1-fd 2.

As an example, when Doppler shift pre-compensation is used, the center transmit frequency of the TRP1 transmitted first signal is fa, and the center transmit frequency of the TRP2 transmitted first signal is fa + fd1-fd2, where fa is a real number in Hertz.

As a sub-embodiment of the above embodiment, the first reference signal is used to determine the fa.

As a sub-implementation of the above embodiment, the first reference signal is used to determine the fa + fd 1.

As a sub-embodiment of the above embodiment, the fa is equal to a center transmit frequency of the first reference signal.

As a sub-embodiment of the above embodiment, the fa + fd1 is equal to the center receive frequency of the first reference signal.

As an example, when using doppler pre-compensation, the first signals respectively transmitted by TRP1 and TRP2 are doppler pre-compensated.

As an example, when doppler shift pre-compensation is employed, the center transmit frequency of the first signal transmitted by TRP1 is fb-fd1, and the center transmit frequency of the first signal transmitted by TRP2 is fb-fd2, where fb is a real number in hertz.

As a sub-embodiment of the above embodiment, the first reference signal is used to determine the fb.

As a sub-implementation of the above embodiment, the first reference signal is used to determine the fb-fd 1.

As a sub-embodiment of the above embodiment, the fb is equal to a center transmission frequency at which the first reference signal is transmitted.

As a sub-embodiment of the above embodiment, the fb-fd1 is equal to a center receive frequency at which the first reference signal is transmitted.

As a sub-embodiment of the above embodiment, the fb is equal to the sum of the center transmit frequency at which the first reference signal is transmitted and a frequency offset, which is a real number in hertz.

Example 9

Embodiment 9 illustrates a schematic diagram of doppler shift pre-compensation in an SFN scenario according to an embodiment of the present application, as shown in fig. 9. In fig. 9, the left picture shows a schematic diagram of the frequency ranges occupied by the wireless signals respectively transmitted by two TRPs at the UE receiver without doppler shift pre-compensation, wherein the vertical and horizontal striped filled boxes show a schematic diagram of the frequency ranges occupied by the two wireless signals respectively transmitted by TRP1 and TRP2 at the UE receiver; the center frequency corresponding to the wireless signal transmitted by the TRP1 is f0+ fd1, and the center frequency corresponding to the wireless signal transmitted by the TRP2 is f0+ fd 2; wherein f0 represents the center transmission frequency of TRP1 and TRP2 (i.e. the center transmission frequency of TRP1 and TRP2 are the same), fd1 represents the Doppler shift generated at the UE receiver by the wireless signal transmitted by TRP1, and fd2 represents the Doppler shift generated at the UE receiver by the wireless signal transmitted by TRP 2. In fig. 9, the right picture shows a schematic diagram of frequency ranges occupied by two wireless signals transmitted by two TRPs after doppler shift pre-compensation at a UE receiver, where the center frequency of the wireless signal transmitted by TRP1 at the UE receiver is f0+ fd3, the center frequency of the wireless signal transmitted by TRP2 at the UE receiver is f0+ fd4, and the fd3 and fd4 are residual frequency offsets after doppler shift pre-compensation of TRP1 and TRP2, respectively. The f0, fd1, fd2, fd3 and fd4 are real numbers in hertz.

As an example, the method described in embodiment 8 is a first type of doppler shift cancellation scheme, and the method described in embodiment 9 is a second type of doppler shift cancellation scheme.

As an embodiment, the first type of doppler shift cancellation scheme is used when the first signal does not overlap with other signals in the time domain.

As an embodiment, the second type of doppler shift cancellation scheme is used for the case where the first signal and the other signal overlap in the time domain.

As a sub-embodiment of the above embodiment, the other signal is a signal transmitted to other node.

As a sub-embodiment of the above embodiment, the other signal and the first signal respectively comprise different physical channels.

As a sub-embodiment of the above embodiment, the other signal and the first signal comprise different physical signals or physical channels, respectively.

As a sub-embodiment of the foregoing embodiment, the doppler shift corresponding to the other signal is different from the doppler shift corresponding to the first signal.

As a sub-embodiment of the above embodiment, the other signal comprises the second signal.

As an embodiment, when the TRP2 transmits a plurality of signals in a spatial multiplexing or frequency division multiplexing manner, if a plurality of doppler shifts corresponding to the plurality of signals are different, the TRP2 performs doppler shift pre-compensation on the plurality of signals with a common doppler shift compensation value calculated (e.g., an arithmetic average or a weighted average) from the plurality of doppler shifts corresponding to the plurality of signals, so that residual frequency offsets of the plurality of signals are different.

As an embodiment, whether the first set of conditions is satisfied is used to determine one of the first and second types of doppler shift cancellation schemes to be used for reception of the first signal.

As an example, when doppler pre-compensation is employed, the first signal transmitted by TRP1 is not doppler pre-compensated; the first signal transmitted by TRP2 is doppler pre-compensated and TRP2 is doppler pre-compensated at a frequency offset of fd1-fd2+ delta, where delta is a real number in hertz.

As an example, when Doppler shift pre-compensation is used, the center transmit frequency of the first signal transmitted by TRP1 is fa, and the center transmit frequency of the first signal transmitted by TRP2 is fa + fd1-fd2+ delta, where fa is a real number in Hertz.

As a sub-embodiment of the above embodiment, the third reference signal is used to determine the fa.

As a sub-implementation of the above embodiment, the third reference signal is used to determine the fa + fd 1.

As a sub-embodiment of the above embodiment, the fa is equal to a center transmission frequency at which the third reference signal is transmitted.

As a sub-embodiment of the above embodiment, the fa + fd1 is equal to the center receive frequency at which the third reference signal is transmitted.

Example 10

Embodiment 10 illustrates a schematic diagram of the first set of time-frequency resources and the second set of time-frequency resources according to an embodiment of the present application, as shown in fig. 10. In fig. 10, 2 white-filled boxes are used to represent time domain resources respectively comprised by the first set of time frequency resources and the second set of time frequency resources. In fig. 10, the ranges of the time domain and the frequency domain corresponding to each block are only used for illustration, and do not represent the size of the actual resource, nor represent that the occupation of the resource is continuous. In embodiment 10, the time interval between the ending time of the second set of time-frequency resources and the starting time of the first set of time-frequency resources is exemplarily a first time length.

In one embodiment, a time interval between an end time of the second set of time-frequency resources and a start time of the first set of time-frequency resources is a first time length.

As an embodiment, a time interval between a starting time of the second set of time-frequency resources and a starting time of the first set of time-frequency resources is a first time length.

In one embodiment, a time interval between a start time of the second set of time-frequency resources and an end time of the first set of time-frequency resources is a first time length.

As an embodiment, a time interval between an end time of a time slot in which the second set of time-frequency resources is located and a start time of a time slot in which the first set of time-frequency resources is located is a first time length.

As an embodiment, when there is an overlap in the time domain between the second set of time-frequency resources and the first set of time-frequency resources, the first time length is 0.

As one embodiment, the first length of time is not greater than a first time threshold comprising a positive integer number of multicarrier symbol lengths of time.

As an embodiment, the first time threshold is signaled to the first node by RRC signaling.

As an embodiment, the first time threshold is notified to the first node through DCI.

As an embodiment, the first time threshold is notified to the first node by a MAC-CE.

As an embodiment, the first time threshold is predefined.

As an embodiment, the above method has a benefit that since the channel is time-varying, if the time interval between the second set of time-frequency resources and the first set of time-frequency resources is too long, and the channel has changed greatly, the correlation between the doppler shift of the second set of reference signals and the doppler shift of the first signal may become small, and the doppler shift of the first signal cannot be accurately estimated in the frequency domain through the doppler of the second reference signal.

As one embodiment, the first set of conditions includes: the first length of time is greater than a second time threshold, the second time threshold comprising a positive integer number of lengths of time of multicarrier symbols.

As an embodiment, the second time threshold is signaled to the first node by RRC signaling.

As an embodiment, the second time threshold is notified to the first node through DCI.

As an embodiment, the second time threshold is notified to the first node by a MAC-CE.

As an embodiment, the second time threshold is predefined.

As an embodiment, the second time threshold is related to a processing power of the first node.

For one embodiment, the second time threshold is reported by the first node to the second node.

As an embodiment, the above method has a benefit that, since signal processing requires a certain time and a certain time period after the second reference signal is received, if the time interval between the second reference signal and the first signal is too short, the processing of the second reference signal is not enough, and the doppler shift of the first signal cannot be estimated by the second reference signal.

As an embodiment, the first receiver receives a third information block, the third information block indicating the first set of time-frequency resources; wherein the second reference signal belongs to a first set of reference signals; the first set of conditions includes: the third information block includes first indication information indicating the second reference signal from the first set of reference signals.

As an embodiment, the third information block is an RRC signaling.

As an embodiment, the third information block is a MAC-CE.

As an embodiment, the third information block is a DCI.

Example 11

Embodiment 11 illustrates a schematic diagram of the time-frequency resources occupied by the second information block, the first time-frequency resource set, and the second time-frequency resource set according to an embodiment of the present application, as shown in fig. 11. In fig. 11, 3 white-filled boxes are used to represent time-frequency resources occupied by the second information block, and the time-frequency resources included in the first set of time-frequency resources and the time-frequency resources included in the second set of time-frequency resources, respectively. In fig. 11, the ranges of the time domain and the frequency domain corresponding to each block are only used for illustration, and do not represent the size of the actual resource, nor represent that the occupation of the resource is continuous. In embodiment 11, the time interval between the ending time of the second set of time-frequency resources and the starting time of the first set of time-frequency resources is exemplarily a first time length.

As an embodiment, the second reference signal is aperiodic, and the second information block is used to indicate the second set of time-frequency resources.

As an embodiment, the second information block and the first information block are two fields in the same DCI.

As an embodiment, one reference signal is aperiodic, meaning that the one reference signal is transmitted in a target set of time-frequency resources after the one reference signal is indicated to be transmitted in the target set of time-frequency resources.

As a sub-embodiment of the above-mentioned embodiments, the one reference signal includes one of the first reference signal, the second reference signal, the third reference signal and the fourth reference signal.

As a sub-embodiment of the above embodiment, the target set of time-frequency resources includes a positive integer number of REs in the frequency domain.

As a sub-embodiment of the above embodiment, the target set of time-frequency resources includes a positive integer number of multicarrier symbols in the time domain.

As a sub-embodiment of the above embodiment, the one reference signal is indicated by one DCI for transmission in the target set of time-frequency resources.

As a sub-embodiment of the above embodiment, the one reference signal is transmitted only once.

As a sub-embodiment of the above embodiment, the one reference signal is transmitted M times, the M being indicated by the one DCI used to indicate the target set of time-frequency resources, the M being a positive integer greater than 1 and less than 1025.

As an embodiment, the first set of conditions includes that the second reference signal is indicated by the first information block to be transmitted in a second set of time-frequency resources.

As an embodiment, the sentence "the second reference signal is indicated to be transmitted in a second set of time-frequency resources" comprises that the second reference signal is aperiodic, the second reference signal being indicated by one DCI for transmission in the second set of time-frequency resources.

As an embodiment, the sentence "the second reference signal is indicated to be transmitted in a second set of time-frequency resources" comprises that the second reference signal is aperiodic, the second reference signal being indicated by the first information block to be transmitted in the second set of time-frequency resources.

Example 12

Embodiment 12 illustrates a schematic diagram of the time-frequency resource occupied by the second information block, the time-frequency resource occupied by the second reference signal, and the time-frequency resource occupied by the first signal according to an embodiment of the present application, as shown in fig. 12. In fig. 12, the 4 white-filled boxes are respectively used to represent the time-frequency resources occupied by the second information block, the time-frequency resources occupied by the 2 second reference signals sent at different times, and the time-frequency resources occupied by the first signal. In fig. 12, the ranges of the time domain and the frequency domain corresponding to each block are only used for illustration, and do not represent the size of the actual resource, nor represent that the occupation of the resource is continuous.

As an embodiment, the second reference signal is semi-persistent, the second information block being used to activate the second reference signal.

As an embodiment, that one reference signal is semi-persistent means that, after the one reference signal is activated, the one reference signal is periodically transmitted in a plurality of time-frequency resource sets, time intervals of any 2 time-domain adjacent time-frequency resource sets in the plurality of time-frequency resource sets are the same in time domain, and after the one reference signal is deactivated, the one reference signal is stopped from being transmitted.

As a sub-embodiment of the above-mentioned embodiments, the one reference signal being activated includes the first node receiving activation indication information, the activation indication information being used to activate transmission of the one reference signal.

As a sub-embodiment of the above embodiment, the activation indication information includes a MAC-CE.

As a sub-embodiment of the above-mentioned embodiments, the activation indication information includes one or more fields in one DCI.

As a sub-embodiment of the foregoing embodiment, the deactivating of the one reference signal includes the first node receiving deactivation indication information, where the deactivation indication information is used to deactivate transmission of the one reference signal.

As a sub-embodiment of the foregoing embodiment, the deactivation indication information includes a MAC-CE.

As a sub-embodiment of the above-mentioned embodiments, the deactivation indication information includes one or more fields in one DCI.

As an embodiment, the second reference signal is semi-persistent, and the second set of time-frequency resources is time-frequency resources occupied by the first transmission of the second reference signal after being activated.

As an embodiment, the second reference signal is semi-persistent, and the second set of time-frequency resources is time-frequency resources occupied by the last transmission of the second reference signal after being activated and closest to the first set of time-frequency resources.

In one embodiment, the ending time of the second set of time-frequency resources is earlier than the starting time of the first set of time-frequency resources.

As an embodiment, the sentence "the second reference signal is indicated to be transmitted in a second set of time-frequency resources" comprises that the second reference signal is semi-persistent, the second reference signal being activated.

As an embodiment, the sentence "the second reference signal is indicated to be transmitted in a second set of time-frequency resources" comprises that the second reference signal is semi-persistent, that the second reference signal is activated when the first signal is received, and that the second reference signal has been transmitted at least once.

As an embodiment, the sentence "the second reference signal is indicated to be transmitted in a second set of time-frequency resources" comprises that the second reference signal is semi-persistent, that the second reference signal is activated and that the second reference signal is not deactivated when the first signal is received.

As an embodiment, the sentence "the second reference signal is indicated to be transmitted in a second set of time-frequency resources" comprises that the second reference signal is semi-persistent, that the second reference signal has been activated and that the second reference signal has not been deactivated when the first signal is received.

As an embodiment, the sentence "the second reference signal is indicated to be transmitted in a second set of time-frequency resources" comprises that the second reference signal is semi-persistent, that the second reference signal has been activated and the second reference signal has not been deactivated and that the second reference signal has been transmitted at least once when the first signal is received.

Example 13

Embodiment 13 illustrates a schematic diagram of time-frequency resources included in time-frequency resources respectively occupied by the first signal and the second signal according to an embodiment of the present application, as shown in fig. 13. In fig. 13, 2 boxes filled with white are used to represent the time-frequency resources occupied by the first signal and the time-frequency resources occupied by the second signal, respectively. In fig. 13, the ranges of the time domain and the frequency domain corresponding to each block are only used for illustration, and do not represent the size of the actual resource, nor represent that the occupation of the resource is continuous. Illustratively, the time-frequency resources occupied by the first signal and the second signal in fig. 13 overlap in the time domain. In embodiment 13, the second signal is associated with a fourth reference signal; when a second condition set is met, the second signal and the second reference signal have the first quasi co-located relationship therebetween; when the second set of conditions is not satisfied, the second signal and the fourth reference signal have the first quasi co-located relationship therebetween; the second set of conditions includes: and time domain resources respectively occupied by the second signal and the first signal belong to a first time window.

As one embodiment, the second signal is associated with a fourth reference signal; when a second condition set is met, the second signal and the second reference signal have the first quasi co-located relationship therebetween; when the second set of conditions is not satisfied, the second signal and the fourth reference signal have the first quasi co-located relationship therebetween; the second set of conditions includes: and time domain resources respectively occupied by the second signal and the first signal belong to a first time window.

As an embodiment, the first time window is one time slot.

As an embodiment, the first time window comprises a time length of a positive integer number of multicarrier symbols.

As an embodiment, the second set of conditions includes: and the time domain resources occupied by the second signal and the first signal respectively have overlapping.

As an embodiment, the second set of conditions includes: and time-frequency resources occupied by the second signal and the first signal are overlapped.

As an embodiment, the second set of conditions includes: the starting time of the time domain resource occupied by the first signal is earlier than the starting time of the time domain resource occupied by the second signal.

As an embodiment, the second set of conditions includes: the first signal has a higher priority than the second signal.

As an embodiment, the second set of conditions includes: the first signal is a PDCCH and the second signal is a PDSCH.

As an embodiment, the second set of conditions includes: the first signal is a PDSCH and the second signal is a CSI-RS.

As an embodiment, the second set of conditions includes: the first signal is a CSI-RS and the second signal is a PDSCH.

As an embodiment, the second set of conditions includes: the first signal is a broadcast-multicast signal and the second signal is not a broadcast-multicast signal.

As a sub-embodiment of the above embodiment, the broadcast-multicast signal includes an SSB.

As a sub-embodiment of the above embodiment, the broadcast-multicast signal comprises a paging signal.

As a sub-embodiment of the above embodiment, the broadcast-multicast signal comprises a system message.

As a sub-embodiment of the above embodiment, the broadcast-multicast signal is scrambled by a G-RNTI (Group-Radio Network temporary Identity).

As a sub-embodiment of the above embodiment, the broadcast-multicast signal is transmitted by a DCI indication common to a group.

As an embodiment, the second set of conditions includes: the first signal and the second signal are both PDSCH, and a starting time of scheduling PDCCH of the first signal is earlier than a starting time of scheduling PDCCH of the second signal.

As an embodiment, the second set of conditions includes: the first signal and the second signal are both PDSCH, and a starting time of a PDCCH that schedules the first signal is later than a starting time of a PDCCH that schedules the second signal.

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

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

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

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

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

As an example, the second signal is transmitted on a Backhaul link (Backhaul).

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

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

As an embodiment, the second signal carries a Transport Block (TB).

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

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

For one embodiment, the second signal includes control information.

As an example, the second signal includes SCI (Sidelink Control Information).

For one embodiment, the second signal includes one or more fields in one SCI.

For one embodiment, the second signal includes one or more fields in a SCI format.

As an embodiment, the second signal includes UCI (Uplink Control Information).

For one embodiment, the second signal includes one or more fields in a UCI.

As an embodiment, the second signal includes one or more fields in a UCI format.

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

For one embodiment, the second signal includes one or more fields in one DCI.

For one embodiment, the second signal includes one or more fields in one DCI format.

As an embodiment, the second signal includes a Physical Uplink Shared Channel (PUSCH).

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

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

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

As an embodiment, the second signal includes a Physical Sidelink Control Channel (PSCCH).

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

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

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

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

For one embodiment, the second signal includes a reference signal.

For one embodiment, the second signal includes an uplink reference signal.

For one embodiment, the second signal includes a downlink reference signal.

For one embodiment, the second signal comprises a sidelink reference signal.

As one embodiment, the second Signal includes a Demodulation Reference Signal (DMRS).

For one embodiment, the second Signal includes a Channel State Information Reference Signal (CSI-RS).

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

As one embodiment, the second Signal includes a Tracking Reference Signal (TRS).

For one embodiment, the second Signal includes a Positioning Reference Signal (PRS).

As one embodiment, the second Signal includes a Sounding Reference Signal (SRS).

As an embodiment, the second Signal includes sounding SSB (Synchronization Signal/Physical Broadcasting Channel Block, SS/PBCH Block, Synchronization/broadcast Channel Block).

As one embodiment, the second signal includes an uplink signal Configured with a Grant (Configured Grant).

For one embodiment, the second signal comprises a dynamically scheduled uplink signal.

For one embodiment, the second signal includes a semi-statically scheduled uplink signal.

As one embodiment, the second signal includes a Configured granted PUSCH (CG-PUSCH).

As one embodiment, the second signal comprises a dynamically scheduled PUSCH.

As one embodiment, the second signal includes a semi-statically scheduled PUSCH.

As an embodiment, the second signal includes a group Common pdcch (group Common pdcch).

For one embodiment, the second signal comprises a semi-persistent scheduled signal.

As one embodiment, the second signal includes a semi-persistently scheduled PDSCH.

As one embodiment, the second signal is transmitted in SFN mode.

As one embodiment, the second signal is transmitted by at least one TRP.

In one embodiment, the second signal is transmitted by at least one transmit beam in the first set of time-frequency resources.

In one embodiment, the second signal is transmitted by the at least one transmission configuration parameter in the first set of time-frequency resources.

As an embodiment, the second signals respectively transmitted by the at least one TRP are identical.

As an embodiment, the second signals respectively transmitted by the at least one transmission configuration parameter are the same.

As one embodiment, the fourth reference signal is a CSI-RS.

As one embodiment, the fourth reference signal is a CSI-RS resource.

As an embodiment, the fourth reference signal is at least one antenna port of a CSI-RS resource.

As one embodiment, the fourth reference signal is a TRS.

For one embodiment, the fourth reference signal is indicated trs-info.

As an embodiment, the fourth reference signal and the second reference signal are the same type of reference signal.

As one embodiment, the fourth reference signal and the second reference signal are both aperiodic.

As one embodiment, the fourth reference signal and the second reference signal are both semi-persistent.

As an embodiment, a fourth information block is used to indicate that the second signal and the fourth reference signal have a quasi co-located relationship, the fourth information block being ignored when the second set of conditions is satisfied.

As an embodiment, a fourth information block is used to indicate that the second signal and the fourth reference signal have a first quasi co-located relationship, the fourth information block being ignored when the second set of conditions is satisfied.

As an embodiment, the fourth information block includes one or more fields of an RRC signaling.

As an embodiment, the fourth information block includes one or more fields of a MAC-CE.

As an embodiment, the fourth information block includes one or more fields of one DCI.

Example 14

Embodiment 14 is a block diagram illustrating a processing apparatus used in a first node, as shown in fig. 14. In embodiment 14, the first node 1400 comprises a first receiver 1401.

For one embodiment, the first receiver 1401 includes at least one of the antenna 452, the transmitter/receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, and the data source 467 of fig. 4 described herein.

In embodiment 14, the first receiver 1401 receives a first information block and receives a first signal in a first set of time-frequency resources. Wherein the first information block indicates a first transmission configuration parameter and a second transmission configuration parameter, which are used in common for receiving the first signal; the first transmission configuration parameter is used to determine a first reference signal; the second transmission configuration parameter is used to determine a second reference signal and a third reference signal; the second reference signal corresponds to a first quasi co-location relationship, and the third reference signal corresponds to a second quasi co-location relationship; when a first set of conditions is satisfied, only the second reference signal of the second and third reference signals is used to receive the first signal, the first and second signals having the first quasi-co-located relationship therebetween; when the first set of conditions is not satisfied, only the third reference signal of the second and third reference signals is used to receive the first signal, the first and third reference signals having the second-type quasi-co-located relationship therebetween; the first set of conditions includes: the second reference signal is indicated to be transmitted in a second set of time-frequency resources.

For one embodiment, the first node 1400 is a user equipment.

As an embodiment, the first node 1400 is a relay node.

For one embodiment, the first node 1400 is a base station.

As an example, the first node 1400 is a vehicle communication device.

For one embodiment, the first node 1400 is a user equipment supporting V2X communication.

As an embodiment, the first node 1400 is a relay node supporting V2X communication.

As an embodiment, the first node 1400 is a base station device supporting IAB.

Example 15

Embodiment 15 is a block diagram illustrating a processing apparatus used in the second node, as shown in fig. 15. In embodiment 15, the second node 1500 comprises a first transmitter 1501.

For one embodiment, the first transmitter 1501 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.

In embodiment 15, the first transmitter 1501 transmits a first information block and transmits a first signal in a first set of time and frequency resources. Wherein the first information block indicates a first transmission configuration parameter and a second transmission configuration parameter, which are used in common for receiving the first signal; the first transmission configuration parameter is used to determine a first reference signal; the second transmission configuration parameter is used to determine a second reference signal and a third reference signal; the second reference signal corresponds to a first quasi co-location relationship, and the third reference signal corresponds to a second quasi co-location relationship; when a first set of conditions is satisfied, only the second reference signal of the second and third reference signals is used to receive the first signal, the first and second signals having the first quasi-co-located relationship therebetween; when the first set of conditions is not satisfied, only the third reference signal of the second and third reference signals is used to receive the first signal, the first and third reference signals having the second-type quasi-co-located relationship therebetween; the first set of conditions includes: the second reference signal is indicated to be transmitted in a second set of time-frequency resources.

As an embodiment, when the first set of conditions is not satisfied, the first signal and the first reference signal have the first quasi co-located relationship therebetween.

As one embodiment, when the first set of conditions is satisfied, the first reference signal and the second reference signal have the first quasi-co-located relationship with the first signal in common.

As an example, the first transmitter 1501 transmits a second signal; wherein the second signal is associated with a fourth reference signal; when a second condition set is met, the second signal and the second reference signal have the first quasi co-located relationship therebetween; when the second set of conditions is not satisfied, the second signal and the fourth reference signal have the first quasi co-located relationship therebetween; the second set of conditions includes: and time domain resources respectively occupied by the second signal and the first signal belong to a first time window.

As an embodiment, a time interval between the second set of time-frequency resources and the first set of time-frequency resources is a first time length; the first set of conditions includes: the first length of time is less than a first time threshold, the first time threshold comprising a positive integer number of lengths of time of multicarrier symbols.

As an embodiment, the first type of quasi co-location relationship is associated with a first set of quasi co-location parameters, the first set of quasi co-location parameters including doppler shift.

As an embodiment, the third reference signal is periodic; the second quasi co-location relationship is different from the first quasi co-location relationship.

For one embodiment, the second node 1500 is a user equipment.

As an embodiment, the second node 1500 is a relay node.

For one embodiment, the second node 1500 is a base station.

As an example, the second node 1500 is a vehicle communication device.

For one embodiment, the second node 1500 is a user equipment supporting V2X communication.

As an embodiment, the second node 1500 is a relay node supporting V2X communication.

As an embodiment, the second node 1500 is a base station device 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 a program instructing relevant hardware, 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 in this application includes 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 telecontrolled aircraft. The second node in this application includes but not limited to wireless communication devices such as cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, aircraft, unmanned aerial vehicle, remote control plane. 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 cellular base station, a micro cellular 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 and test devices, for example, a transceiver device simulating a part of functions of a base station, a signaling tester, and the like.

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 configured for wireless communication, comprising:

a first receiver receiving a first information block;

2. The first node of claim 1, wherein the first signal and the first reference signal have the first quasi-co-located relationship when the first set of conditions is not satisfied.

3. The first node of claim 1 or 2, wherein the first reference signal and the second reference signal together have the first quasi co-located relationship with the first signal when the first set of conditions is satisfied.

4. The first node according to any of claims 1 to 3,

the first receiver receives a second signal;

5. The first node according to any of claims 1-4, wherein the time interval between the second set of time-frequency resources and the first set of time-frequency resources is a first length of time; the first set of conditions includes: the first length of time is less than a first time threshold, the first time threshold comprising a positive integer number of lengths of time of multicarrier symbols.

6. The first node of any of claims 1-5, wherein the first quasi co-location relationship is associated with a first set of quasi co-location parameters, the first set of quasi co-location parameters including Doppler shift.

7. The first node of any of claims 1-6, wherein the third reference signal is periodic; the second quasi co-location relationship is different from the first quasi co-location relationship.

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

a first transmitter for transmitting a first information block;

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

receiving a first information block;

receiving a first signal in a first set of time-frequency resources;

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

transmitting a first information block;

transmitting a first signal in a first set of time-frequency resources;