CN110035499B

CN110035499B - Method and apparatus in a communication node for wireless communication

Info

Publication number: CN110035499B
Application number: CN201810026114.1A
Authority: CN
Inventors: 陈晋辉; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2018-01-11
Filing date: 2018-01-11
Publication date: 2023-07-25
Anticipated expiration: 2038-01-11
Also published as: CN110035499A; CN116828612A; CN116782405A

Abstract

A method and apparatus in a communication node for wireless communication is disclosed. The communication node sequentially executes K-type energy detection and judges whether a first wireless signal can be sent on a target time-frequency resource or not; if the first wireless signal can be sent on the target video resource, sending the first wireless signal on the target time-frequency resource; otherwise, the first wireless signal is abandoned from being sent on the target time-frequency resource, wherein K space receiving schemes are respectively used for K-type energy detection, K is a positive integer greater than 1, and all K-type energy detection is used for judging whether the first wireless signal can be sent on the target time-frequency resource. The method and the device avoid interference to ongoing transmission in other directions when directional LBT is used for directional transmission, and use higher antenna gain or higher transmitting power to improve transmission efficiency when directional transmission is performed when interference does not exist to transmission in other directions.

Description

Method and apparatus in a communication node for wireless communication

Technical Field

The present application relates to transmission schemes for wireless signals in wireless communication systems, and more particularly to methods and apparatus for multi-antenna transmission and unlicensed spectrum.

Background

In conventional 3GPP (3 rd generation partnerproject) LTE (Long-term evolution) systems, data transmission can only occur on licensed spectrum, but with a drastic increase in traffic, especially in some urban areas, licensed spectrum may be difficult to meet the traffic demand. Communications on unlicensed spectrum in Release13 and Release14 are introduced by the cellular system and used for transmission of downlink and uplink data. To ensure compatibility with other access technologies on unlicensed spectrum, LBT (listen before talk) technology is adopted by LAA (licensed assisted access) to avoid interference due to multiple transmitters simultaneously occupying the same frequency resources. The transmitter of the LTE system adopts a quasi-omni antenna to perform LBT.

Currently, a technical discussion of 5GNR (new radio access technology) is in progress, wherein Massive (Massive) MIMO (Multi-input Multi-Output) is one research hotspot of next generation mobile communication. In massive MIMO, a plurality of antennas form beams directed to a specific spatial direction by Beamforming (Beamforming) to improve communication quality, and when considering coverage characteristics due to Beamforming, conventional LAA techniques need to be reconsidered, such as LBT schemes.

Disclosure of Invention

The inventor finds that in a 5G system, beamforming will be used in a large scale, and how to improve the transmission efficiency of wireless signals on an unlicensed spectrum through beamforming is a key problem to be solved.

In view of the above, the present application discloses a solution. It should be noted that, without conflict, embodiments in the UE (user equipment) and features in the embodiments may be applied to the base station, and vice versa. Further, embodiments of the present application and features of embodiments may be arbitrarily combined with each other without conflict.

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

performing K classes of energy detection for which K spatial reception schemes are respectively used, the K being a positive integer greater than 1;

judging whether a first wireless signal can be sent on a target time-frequency resource, wherein the K-type energy detection is used for judging whether the first wireless signal can be sent on the target time-frequency resource;

and transmitting the first wireless signal on the target time-frequency resource, or discarding the transmission of the first wireless signal on the target time-frequency resource.

As an embodiment, the above method is used for channel access over unlicensed spectrum.

As an embodiment, it is common knowledge that for one wireless transmission over an unlicensed spectrum, only one spatial reception scheme is used for channel access over the unlicensed spectrum, so the above method is innovative.

As an embodiment, it is common knowledge that for one wireless transmission over unlicensed spectrum, only one type of energy detection is used for channel access over unlicensed spectrum, so the above method is innovative.

As an embodiment, one benefit of the above method is that: by performing energy detection for multiple directions, interference to other directions is avoided when wireless signals are transmitted for a particular direction.

As an embodiment, another benefit of the above method is that: by performing energy detection on multiple directions, it is ensured that wireless signals are not transmitted in a specific direction when interference to other directions is large.

As an embodiment, a further advantage of the above method is that: by performing energy detection for multiple directions, wireless signals are transmitted for a particular direction with a large antenna gain while ensuring less interference to other directions.

As an embodiment, a further advantage of the above method is that: by performing energy detection for multiple directions, wireless signals are transmitted for a particular direction with a greater transmit power while ensuring less interference to other directions.

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

performing a K-phase comparison;

the K-type energy detection results are used for the K-type comparison, the K power thresholds are used for the K-type comparison, and the K-type comparison results are used for judging whether the first wireless signal can be sent on the target time-frequency resource.

As an embodiment, one benefit of the above method is that: different power thresholds are set for the signal transmission direction and the interference direction so as to avoid interference to transmission in other directions during signal transmission.

As an embodiment, another benefit of the above method is that: different power thresholds are set for omni-directional energy detection and directional energy detection to avoid interference with transmissions in other directions when directional signals are transmitted.

As an embodiment, a further advantage of the above method is that: different power thresholds are set for the wide beam energy detection and the narrow beam energy detection to avoid interference with transmissions in other directions when the narrow beam signal is transmitted.

As an embodiment, a further advantage of the above method is that: the power threshold for the signal transmission direction is lower than the power threshold for the interference direction, so the signal can be transmitted with higher transmit power or antenna gain.

According to one aspect of the application, the above method is characterized in that the maximum equivalent omni-directional radiation power used for transmitting the first wireless signal is related to one of the K power thresholds.

As one example, one benefit of the above approach is that the power threshold employed by the directional LBT is used to determine the maximum equivalent omni-directional radiated power (EffectiveIsotropicRadiatedPower, EIRP) of the directional radio signal that is direction dependent, thereby improving system transmission efficiency while avoiding interference in other directions.

According to one aspect of the present application, the method is characterized in that the time-frequency resource occupied by the K-type energy detection is used to determine the target time-frequency resource.

According to an aspect of the present application, the above method is characterized in that the spatial coverage of each of the K spatial reception schemes is different.

As an embodiment, the above method has the following advantages: the signal transmitting direction is distinguished from the interference direction, so that the transmission efficiency of the wireless signal is improved and the robustness of the system is enhanced.

According to an aspect of the present application, the above method is characterized in that the spatial transmission direction of the first wireless signal is related to one of the K spatial reception schemes.

As an embodiment, the above method has the following advantages: energy detection is performed with respect to the spatial transmission direction of the wireless signal, thus improving the transmission efficiency of the wireless signal and reducing interference.

According to an aspect of the present application, the method is characterized in that the time resources occupied by each of the K space reception schemes include a first time resource.

As an embodiment, the above method has the advantage that different space receiving schemes are executed on the same time resource by using different antennas, so that the efficiency of system transmission is improved, and the probability of collision is reduced.

According to an aspect of the present application, the method is characterized in that the time resources occupied by two spatial receiving schemes in the K spatial receiving schemes respectively include a second time resource and a third time resource, and the second time resource is orthogonal to the third time resource in a time domain. .

As an embodiment, the above method has the advantage that the antennas used by the different spatial reception schemes comprise the same antenna, thereby saving hardware costs.

According to an aspect of the present application, the above method is characterized in that the K spatial reception schemes include a first spatial reception scheme and a second spatial reception scheme, and a spatial coverage of the first spatial reception scheme covers a spatial coverage of the second spatial reception scheme.

As an embodiment, the method has the advantage that fewer antennas or one omni-directional antenna is used to detect the energy of the interference direction in combination with the directional antenna array, so that the hardware cost is saved and the efficiency of detecting the energy of the interference direction is improved.

According to an aspect of the present application, the method is characterized in that a first power threshold is a power threshold corresponding to the first spatial reception scheme among the K power thresholds, and a second power threshold is a power threshold corresponding to the second spatial reception scheme among the K power thresholds, and the second power threshold is smaller than the first power threshold.

As an embodiment, the above method has the advantage that interference of the directional radio signal transmission to the surroundings is avoided.

a first control signal is received, the first control signal indicating at least one of the K spatial reception schemes.

As an embodiment, one benefit of the above method is that the efficiency of the directional LBT is increased by the receiving end of the first wireless signal.

According to one aspect of the present application, the above method is characterized in that the first class communication node does not transmit a wireless signal on a time resource between time resources occupied by the K class energy detection.

As an embodiment, one benefit of the above method is that: the efficiency and accuracy of the joint LBT are improved.

According to an aspect of the present application, the above method is characterized in that the first type of communication node is a user equipment or the first type of communication node is a base station.

The application discloses a method used in a second class of communication nodes for wireless communication, which is characterized by comprising the following steps:

monitoring a first wireless signal on a target time-frequency resource;

the transmitter of the first wireless signal performs K kinds of energy detection, K spatial receiving schemes are used for the K kinds of energy detection respectively, K is a positive integer greater than 1, and all K kinds of energy detection are used for judging whether the first wireless signal can be transmitted on the target time-frequency resource.

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

And transmitting a first control signal, wherein the first control signal indicates at least one space receiving scheme in the K space receiving schemes.

According to an aspect of the present application, the above method is characterized in that the second type of communication node is a base station or the second type of communication node is a user equipment.

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

a first receiver module performing K classes of energy detection for which K spatial reception schemes are respectively used, the K being a positive integer greater than 1;

the first processor module is used for judging whether the first wireless signal can be sent on the target time-frequency resource or not, and the K-type energy detection is used for judging whether the first wireless signal can be sent on the target time-frequency resource or not;

and the first transmitter module transmits the first wireless signal on the target time-frequency resource or gives up transmitting the first wireless signal on the target time-frequency resource.

As an embodiment, the above-mentioned first type of communication node device used for wireless communication is characterized in that the first processor module performs K analog comparison; the K-type energy detection results are used for the K-type comparison, the K power thresholds are used for the K-type comparison, and the K-type comparison results are used for judging whether the first wireless signal can be sent on the target time-frequency resource.

As an embodiment, the above-mentioned first type of communication node device used for wireless communication is characterized in that the maximum equivalent omni-directional radiation power used for transmitting the first wireless signal is related to one of the K power thresholds.

As an embodiment, the first type of communication node device used for wireless communication is characterized in that time-frequency resources occupied by the K type of energy detection are used for determining the target time-frequency resources.

As an embodiment, the first type of communication node apparatus used for wireless communication is characterized in that the spatial coverage of each of the K spatial reception schemes is different.

As an embodiment, the above-mentioned first type of communication node device used for wireless communication is characterized in that the spatial transmission direction of the first wireless signal is related to one of the K spatial reception schemes.

As an embodiment, the first type of communication node device used for wireless communication is characterized in that the time resources occupied by each of the K space reception schemes include a first time resource.

As an embodiment, the first type of communication node device used for wireless communication is characterized in that the time resources occupied by two of the K space reception schemes include a second time resource and a third time resource, respectively, and the second time resource is orthogonal to the third time resource in a time domain.

As an embodiment, the above-mentioned first type of communication node device used for wireless communication is characterized in that the K space reception schemes include a first space reception scheme and a second space reception scheme, and a space coverage of the first space reception scheme covers a space coverage of the second space reception scheme.

As an embodiment, the first type of communication node device used for wireless communication is characterized in that a first power threshold is a power threshold corresponding to the first spatial reception scheme among the K power thresholds, and a second power threshold is a power threshold corresponding to the second spatial reception scheme among the K power thresholds, and the second power threshold is smaller than the first power threshold.

As an embodiment, the first type of communication node device used for wireless communication is characterized in that the first receiver module receives a first control signal, the first control signal indicating at least one of the K spatial reception schemes.

As an embodiment, the above-mentioned first type of communication node device used for wireless communication is characterized in that the first type of communication node does not transmit a wireless signal on a time resource between time resources occupied by the K type of energy detection.

As an embodiment, the above-mentioned first type of communication node device used for wireless communication is characterized in that the first type of communication node is a user equipment.

As an embodiment, the above-mentioned first type of communication node device used for wireless communication is characterized in that the first type of communication node is a base station.

The application discloses a second class of communication node device used for wireless communication, which is characterized by comprising:

a first transceiver module that monitors a first wireless signal on a target time-frequency resource;

As an embodiment, the second type of communication node device used for wireless communication is characterized in that the first transceiver module transmits a first control signal indicating at least one of the K spatial reception schemes.

As an embodiment, the second type of communication node device used for wireless communication is characterized in that the second type of communication node is a base station or the second type of communication node is a user equipment.

As an embodiment, compared with the prior art disclosed, the present application has the following main technical advantages:

-enabling a smooth transition from omni-directional LBT to directional LBT;

-avoiding interference to ongoing transmissions in other directions when directional LBT is used for directional transmission;

in the absence of interference to transmissions in other directions, higher antenna gain or higher transmit power is used in directional transmissions to increase transmission efficiency.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings in which:

FIG. 1 illustrates a flow chart of class K energy detection and a first wireless signal according to one embodiment of the present application;

FIG. 2 shows a schematic diagram of a network architecture according to one embodiment of the present application;

fig. 3 shows a schematic diagram of an embodiment of a radio protocol architecture of a user plane and a control plane according to one embodiment of the present application;

fig. 4 shows a schematic diagram of an evolved node and a UE according to one embodiment of the present application;

fig. 5 shows a flow chart of wireless transmission according to one embodiment of the present application;

FIG. 6 illustrates a schematic diagram of K classes of energy detection, K spatial reception schemes, and target time-frequency resources, according to one embodiment of the present application;

Fig. 7A and 7B show schematic diagrams of a first spatial reception scheme and a second spatial reception scheme according to one embodiment of the present application;

fig. 8 shows a schematic diagram of an antenna structure of a first type of communication node according to an embodiment of the present application;

fig. 9 shows a block diagram of a processing arrangement for use in a first type of communication node according to an embodiment of the present application;

fig. 10 shows a block diagram of a processing arrangement for use in a second class of communication nodes according to an embodiment of the present application.

Detailed Description

The technical solution of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be arbitrarily combined with each other.

Example 1

Embodiment 1 illustrates a flow chart of class K energy detection and a first wireless signal according to the present application, as shown in fig. 1. In fig. 1, each block represents a step. In embodiment 1, a first type communication node in the present application sequentially performs K types of energy detection, and determines whether a first wireless signal can be sent on a target time-frequency resource; if the first wireless signal can be sent on the target video resource, sending the first wireless signal on the target time-frequency resource; otherwise, the first wireless signal is abandoned from being sent on the target time-frequency resource, wherein K space receiving schemes are respectively used for K-type energy detection, K is a positive integer greater than 1, and all K-type energy detection is used for judging whether the first wireless signal can be sent on the target time-frequency resource.

As one embodiment, the K-class energy detection is used for channel access over unlicensed spectrum.

As an embodiment, once the energy detection means: the first type of communication device monitors received power over a period of time within a given duration.

As an embodiment, once the energy detection means: the first type of communication device monitors received energy over a period of time within a given duration.

As an embodiment, once the energy detection means: the first type of communication device perceives (Sense) for all wireless signals on a given frequency domain resource over a period of time within a given duration to obtain a given power; the given frequency domain resource is a frequency band in which the target time-frequency resource is located.

As an embodiment, once the energy detection means: the first type of communication device perceives (Sense) for all wireless signals on a given frequency domain resource over a period of time within a given duration to obtain a given energy; the given frequency domain resource is a frequency band in which the target time-frequency resource is located.

As an embodiment, the energy detection is energy detection in LBT (listen before talk).

As an embodiment, the energy detection is implemented by means of energy detection in WiFi.

As an embodiment, the energy detection is achieved by measuring the RSSI (received signal strength indication).

As an embodiment, said K is equal to 2.

As an embodiment, the K is equal to 3.

As an embodiment, the first type of communication device is a base station, and the first wireless signal is a downlink signal.

As an embodiment, the first wireless signal is a downlink control signal.

As an embodiment, the first wireless signal is a downlink data signal.

As an embodiment, the first radio signal is a downlink reference signal.

As an embodiment, the first type of communication device is a user equipment, and the first wireless signal is an uplink signal.

As an embodiment, the first wireless signal is an uplink control signal.

As an embodiment, the first wireless signal is an uplink data signal.

As an embodiment, the first radio signal is an uplink reference signal.

As an embodiment, the detection powers obtained by performing the K-type energy detection multiple times respectively are used to determine whether the first wireless signal can be transmitted on the target time-frequency resource.

As one embodiment, the K-class energy detection is performed M1 times in total to obtain M1 detection powers, where M1 is a positive integer not smaller than K.

As one embodiment, the M1 detected powers are all lower than a target power threshold, and the first type communication node sends the first wireless signal on the target time-frequency resource.

As an embodiment, at least one detected power of the M1 detected powers is higher than a target power threshold, and the first type communication node gives up transmitting the first wireless signal on the target time-frequency resource.

As one embodiment, the first class communication node performs a K-phase comparison; the K-type energy detection results are used for the K-type comparison, the K power thresholds are used for the K-type comparison, and the K-type comparison results are used for judging whether the first wireless signal can be sent on the target time-frequency resource.

As one embodiment, the K-class energy detection is relatively one-to-one with the K-class.

As an embodiment, the K types of energy detection are in one-to-one correspondence with the K spatial reception schemes.

As one embodiment, the K-class energy detection corresponds to the K power thresholds one-to-one.

As an embodiment, the third type of energy detection is one of the K types of energy detection, the third type of energy detection is performed L3 times to obtain L3 detection powers, the L3 is a positive integer, and the third type of comparison is a comparison corresponding to the third type of energy detection, in which a third power threshold is used for comparing with the L3 detection powers, and the third power threshold is one of the K power thresholds.

As one embodiment, the third type of energy detection is performed L3 times in succession.

As an embodiment, the L3 detected powers are all below the third power threshold, and the first wireless signal is transmitted on the target time-frequency resource.

As an embodiment, there is one detected power not lower than the third power threshold value in the L3 detected powers, and the target time-frequency resource is not used for transmitting the first wireless signal.

As an embodiment, at least two unequal power thresholds exist among the K power thresholds.

As one embodiment, the K power thresholds are associated with the K spatial reception schemes.

As an embodiment, the K power thresholds relate to spatial coverage of the K spatial reception schemes.

As an embodiment, the larger the spatial coverage of one of the K spatial reception schemes, the higher the corresponding power threshold.

As an embodiment, the K power thresholds relate to spatial reception directions of the K spatial reception schemes.

As an embodiment, the two power thresholds corresponding to the spatial reception schemes with different spatial reception directions in the K spatial reception schemes are different.

As an embodiment, the K types of energy detection respectively obtain K detection power groups, and the detection power in one detection power group of the K detection power groups is the result that the corresponding type of energy detection is performed once or more times.

As an embodiment, the detected powers in the K detected power groups are all lower than the corresponding power threshold of the K power thresholds, and the first wireless signal is sent on the target time-frequency resource.

As an embodiment, at least one detected power in the K detected power groups is not lower than a corresponding power threshold in the K power thresholds, and the target time-frequency resource is not used for transmitting the first wireless signal.

As an embodiment, the K-type energy detection is in one-to-one correspondence with K time slot groups, where each of the K time slot groups includes one or more time slots, and corresponding energy detection in the K-type energy detection is performed in each of the K time slot groups, and detected power obtained by each of the K-type energy detection on time slots in the corresponding time slot group in the K time slot groups is compared with a corresponding power threshold in the K power thresholds.

As an example, the time slot has a time length of 9 microseconds.

As an embodiment, the time slot is 16 microseconds in length.

As an embodiment, the detection powers obtained by the K types of energy detection on the time slots in the corresponding time slot groups in the K time slot groups are compared with the corresponding power thresholds in the K power thresholds, and the obtained results are that the corresponding detection powers are smaller than the corresponding power thresholds, and the first wireless signal is sent on the target time-frequency resource.

As an embodiment, the detected powers obtained by the K types of energy detection on the time slots in the corresponding time slot groups in the K time slot groups are compared with the corresponding power thresholds in the K power thresholds, at least one corresponding detected power in the obtained result is not less than the corresponding power threshold, and the target time-frequency resource is not used for transmitting the first wireless signal.

As an embodiment, the maximum equivalent omni-directional radiation power used for transmitting the first wireless signal is related to one of the K power thresholds.

As an embodiment, the maximum equivalent omni-directional radiation power used for transmitting the first wireless signal is equal to the maximum transmit power multiplied by the antenna gain.

As one embodiment, the maximum equivalent omni-directional radiated power in mdB used to transmit the first wireless signal is equal to the maximum radiated power in mdB times the decibel of the antenna gain.

As an embodiment, one of the K power thresholds is used to calculate the maximum transmit power of the first wireless signal.

As one embodiment, one of the K power thresholds is used to calculate the maximum antenna gain of the first wireless signal.

As an embodiment, one of the K power thresholds is used to calculate a maximum EIRP (equivalent isotropic radiated power) value of the first wireless signal.

As an embodiment, the maximum EIRP of the first wireless signal is related to the transmit power and antenna gain at which the first wireless signal is transmitted.

As one embodiment, the EIRP of the first wireless signal is equal to the transmit power at which the first wireless signal is transmitted plus the antenna gain.

As one embodiment, the maximum equivalent omni-directional radiation power of the first wireless signal is equal to the first value minus one of the K power thresholds.

As an embodiment, the first value is a default configuration.

As an embodiment, the first value is message configured.

As an embodiment, the maximum EIRP used for transmitting the first wireless signal is related to a target power threshold of the K power thresholds, the target power threshold corresponding to a target spatial reception scheme of the K spatial schemes, and the direction of the transmission beam used for transmitting the first wireless signal is related to the direction of the reception beam generated by the target spatial reception scheme.

As an embodiment, the strongest transmission direction of the transmission beam used for transmitting the first wireless signal is the same as the strongest reception direction of the reception beam generated by the target spatial reception scheme.

As an embodiment, the spatial coverage of the transmit beam used for transmitting the first wireless signal is the same as the spatial coverage of the receive beam generated by the target spatial reception scheme.

As an embodiment, the time-frequency resource occupied by the K-type energy detection is used to determine the target time-frequency resource.

As an embodiment, the first class communication node performs the K class energy detection on a first sub-band.

As an embodiment, the first sub-band is an unlicensed band.

As an embodiment, the frequency domain resource of the target time-frequency resource is within the first sub-band.

As an embodiment, the time domain resource in the target time-frequency resource is after the time domain resource occupied by the K-type energy detection is executed.

As an embodiment, the time domain resource in the target time-frequency resource immediately follows the time domain resource occupied by executing the K-type energy detection.

As an embodiment, the starting point distance of the time domain resource in the target time-frequency resource is a fixed value in time from the ending point of the time domain resource occupied by performing the K-type energy detection.

As an embodiment, the fixed value is equal to 0.

As an embodiment, the fixed value is greater than 0.

As an embodiment, the fixed value is less than a target time threshold.

As one embodiment, the target time threshold is a default configuration.

As one embodiment, the target time threshold is message configured.

As an embodiment, the spatial coverage of each of the K spatial reception schemes is different.

As an embodiment, the K spatial reception schemes generate K strongest analog beams with different reception directions.

As one embodiment, the K spatial reception schemes generate K analog beams with different spatial coverage.

As an embodiment, the K spatial reception schemes generate K strongest analog beams with the same reception direction but different spatial coverage.

As an embodiment, the K spatial reception schemes have at least two different beamwidths generated by the spatial reception schemes.

As an embodiment, the K spatial reception schemes have at least two different reception angles generated by the spatial reception schemes.

As an embodiment, at least two spatial receiving schemes of the K spatial receiving schemes generate different strongest receiving directions.

As an embodiment, the K spatial reception schemes have at least two different maximum antenna gains generated by the spatial reception schemes.

As an embodiment, at least one of the K spatial reception schemes uses omni-directional reception.

As an embodiment, at least one of the K spatial reception schemes uses quasi-omni-directional (qsi-omni-directional) reception.

As an embodiment, at least one of the K spatial reception schemes uses directional (directional) reception.

As an embodiment, at least two antennas (antenna elements) adopted by the K spatial reception schemes are different.

As an embodiment, at least two of the K spatial reception schemes use the same antenna but have different phase shifter coefficients.

As an embodiment, the spatial transmission direction of the first wireless signal is related to one of the K spatial reception schemes.

As one embodiment, the target spatial reception scheme is one of the K spatial reception schemes, which generates a target reception beam.

As an embodiment, the spatial transmission parameter used for transmitting the first wireless signal is related to a spatial reception parameter of the target spatial reception scheme.

As an embodiment, the spatial reception parameters of the target spatial reception scheme are used to infer spatial transmission parameters used to transmit the first wireless signal.

As an embodiment, the receive spatial filtering of the target spatial reception scheme is related to the transmit spatial filtering used to transmit the first wireless signal.

As an embodiment, the receive spatial filtering of the target spatial reception scheme is used to infer a transmit spatial filtering used to transmit the first wireless signal.

As an embodiment, the spatial transmission parameter used for transmitting the first wireless signal and the spatial reception parameter of the target spatial reception scheme are QCL (co-located like) on spatial parameters.

As an embodiment, the coefficients of the phase shifter used for transmitting the first wireless signal are correlated with the coefficients of the phase shifter of the target spatial reception scheme.

As an embodiment, the coefficients of the phase shifter used for transmitting the first wireless signal are the same as the coefficients of the phase shifter of the target spatial reception scheme.

As one embodiment, the target transmit beam is a transmit beam used to transmit the first wireless signal.

As one embodiment, the target receive beam is spatially correlated with the target transmit beam.

As an embodiment, the target reception beam covers the same reception angle as the target transmission beam.

As an embodiment, the target receive beam and the target transmit beam have the same spatial coverage.

As an embodiment, the spatial coverage of the target receive beam comprises a spatial coverage of the target transmit beam.

As an embodiment, the time resources occupied by each of the K spatial reception schemes include a first time resource.

As an embodiment, all of the K spatial reception schemes are performed only on the first time resource.

As an embodiment, at least two spatial receiving schemes of the K spatial receiving schemes occupy different time resources.

As an embodiment, the time resources occupied by two spatial reception schemes of the K spatial reception schemes respectively include a second time resource and a third time resource, and the second time resource is orthogonal to the third time resource in the time domain.

As an embodiment, the time resources occupied by the two spatial reception schemes are orthogonal in the time domain.

As an embodiment, the time resources occupied by the two spatial reception schemes overlap in the time domain.

As an embodiment, the time resources occupied by the K spatial reception schemes are orthogonal in the time domain.

As an embodiment, the second time resource precedes the third time resource.

As an embodiment, the second time resource is subsequent to the third time resource.

As an embodiment, the K spatial reception schemes include a first spatial reception scheme and a second spatial reception scheme, and a spatial coverage of the first spatial reception scheme covers a spatial coverage of the second spatial reception scheme.

As an embodiment, the spatial coverage of the second spatial reception scheme is smaller than the spatial coverage of the first spatial reception scheme.

As an embodiment, the first spatial reception scheme is omni-directional reception and the second spatial reception scheme is directional reception.

As an embodiment, the first spatial reception scheme generates a first reception beam, and the second spatial reception scheme generates a second reception beam, and a width of the first reception beam is greater than a width of the second reception beam.

As an embodiment, the strongest reception direction of the first reception beam is the same as the strongest reception direction of the second reception beam.

As an embodiment, the range of reception angles covered by the second spatial reception scheme is smaller than the range of reception angles covered by the first spatial reception scheme.

As an embodiment, the first power threshold is a power threshold of the K power thresholds corresponding to the first spatial reception scheme, and the second power threshold is a power threshold of the K power thresholds corresponding to the second spatial reception scheme, and the second power threshold is smaller than the first power threshold.

As one embodiment, the difference between the second power threshold and the first power threshold is a first decibel value, the first decibel value being related to the spatial coverage of the second spatial reception scheme.

As one embodiment, the first type of communication node receives a first control signal indicating at least one of the K spatial reception schemes.

As an embodiment, the first control signal indicates the K spatial reception schemes.

As an embodiment, the first control signal indicates a spatial reception scheme spatially correlated with the transmission of the first wireless signal among the K spatial reception schemes.

As an embodiment, the first control signal is a downlink control signal.

As an embodiment, the first control signal is a downlink physical layer control signal.

As an embodiment, the first control signal is RRC (RadioResourceControl) signaling.

As an embodiment, the first control signal is an uplink control signal.

As an embodiment, the first control signal is an uplink physical layer control signal.

As an embodiment, the first control signal is transmitted on the first sub-band.

As an embodiment, the first control signal is transmitted over a licensed spectrum.

As an embodiment, the first class communication node does not transmit a wireless signal on a time resource between time resources occupied by the K class energy detection.

As an embodiment, the first type of communication node is a user equipment.

As an embodiment, the first type of communication node is a base station.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2. Fig. 2 is a diagram illustrating an NR5g, LTE (Long-term evolution) and LTE-a (Long-term evolution enhanced) system network architecture 200. The NR5G or LTE network architecture 200 may be referred to as EPS (EvolvedPacket System ) 200 as some other suitable terminology. EPS200 may include one or more UEs (User Equipment) 201, ng-RAN (next generation radio access network) 202, epc (evolvedpacket core)/5G-CN (5G-CoreNetwork) 210, hss (home subscriber server) 220, and internet service 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, 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 bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol termination for the UE 201. The gNB203 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), TRP (transmit-receive point), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the EPC/5G-CN210. Examples of UE201 include a cellular telephone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, an drone, an aircraft, a narrowband physical network device, a machine-type communication device, a land vehicle, an automobile, a wearable device, or any other similar functional device. Those of skill in the art may also refer to the 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 EPC/5G-CN210 through an S1/NG interface. EPC/5G-CN210 includes MME/AMF/UPF211, other MME/AMF/UPF214, S-GW (Service Gateway) 212, and P-GW (PaketDateNetworkgateway) 213. The MME/AMF/UPF211 is a control node that handles signaling between the UE201 and the EPC/5G-CN210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (internet protocol) packets are transported through the S-GW212, which S-GW212 itself is connected to the P-GW213. The P-GW213 provides UEIP address allocation and other functions. The P-GW213 is connected to the internet service 230. The internet services 230 include operator-corresponding internet protocol services, which may include, in particular, the internet, intranets, IMS (IPMultimediaSubsystem ), and PS streaming services (PSs).

As an embodiment, the gNB203 corresponds to a first type of communication device in the present application, and the UE201 corresponds to a second type of communication device in the present application.

As an embodiment, the UE201 corresponds to a first type of communication device in the present application, and the gNB203 corresponds to a second type of communication device in the present application.

As an embodiment, the UE201 supports multiple antenna transmission.

As an embodiment, the gNB203 supports multi-antenna transmission.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture according to one user plane and control plane of the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane and a control plane, fig. 3 shows the radio protocol architecture for a User Equipment (UE) and a base station device (gNB or eNB) with 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 PHY301. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY301. In the user plane, the L2 layer 305 includes a MAC (medium access control) sublayer 302, an RLC (Radio LinkControl, radio link layer control protocol) sublayer 303, and a PDCP (packet data convergence protocol) sublayer 304, which are terminated at the gNB on the network side. Although not shown, the UE may have several upper layers above the L2 layer 305, 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., remote UE, server, etc.). The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides header compression for upper layer data packets to reduce radio transmission overhead, security by ciphering the data packets, and handover support for UEs between gnbs. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out of order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for the physical layer 301 and the L2 layer 305, but there is no header compression function for the control plane. The control plane also includes an RRC (radio resource control) sublayer 306 in layer 3 (L3 layer). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the gNB and the UE.

As an embodiment, the wireless protocol architecture in fig. 3 is applicable to the first type of communication device in the present application.

As an embodiment, the wireless protocol architecture in fig. 3 is applicable to the second type of communication device in the present application.

As an embodiment, the first wireless signal in the present application is generated in the PHY301.

As an embodiment, the first radio signal in the present application is generated in the RRC sublayer 306.

As an embodiment, the first control signal in the present application is generated in the PHY301.

As an embodiment, the first control signal is generated in the RRC sublayer 306 in the present application.

Example 4

Embodiment 4 shows a schematic diagram of a base station device and a given user equipment according to the present application, as shown in fig. 4. Fig. 4 is a block diagram of a gNB410 in communication with a UE450 in an access network.

A controller/processor 440, a scheduler 443, a memory 430, a receive processor 412, a transmit processor 415, a mimo transmit processor 441, a mimo detector 442, a transmitter/receiver 416, and an antenna 420 may be included in the base station apparatus (410).

A controller/processor 490, memory 480, data source 467, transmit processor 455, receive processor 452, mimo transmit processor 471, mimo detector 472, transmitter/receiver 456, and antenna 460 may be included in a user equipment (UE 450).

In downlink transmission, the processing related to the base station apparatus (410) may include:

upper layer packet arrival controller/processor 440, controller/processor 440 providing packet header compression, encryption, packet segmentation connection and reordering, and multiplexing de-multiplexing between logical and transport channels to implement L2 layer protocols for user and control planes; the upper layer packet may include data or control information such as DL-SCH (downlink shared channel);

the controller/processor 440 may be associated with a memory 430 that stores program codes and data. Memory 430 may be a computer-readable medium;

the controller/processor 440 informs the scheduler 443 of the transmission demand, the scheduler 443 is configured to schedule air interface resources corresponding to the transmission demand, and informs the controller/processor 440 of the scheduling result;

controller/processor 440 passes control information for downstream transmissions, which is processed by receive processor 412 for upstream reception, to transmit processor 415;

transmit processor 415 receives the output bit stream of controller/processor 440, implements various signal transmission processing functions for the L1 layer (i.e., physical layer) including coding, interleaving, scrambling, modulation, power control/allocation, and physical layer control signaling (including PBCH, PDCCH, PHICH, PCFICH, reference signal generation), etc.;

MIMO transmit processor 441 spatially processes the data symbols, control symbols, or reference signal symbols (e.g., multi-antenna precoding, digital beamforming) and outputs baseband signals to transmitter 416;

MIMO transmit processor 441 outputs the analog transmit beam shaping vectors to transmitter 416;

a transmitter 416 for converting the baseband signal provided by the MIMO transmission processor 441 into a radio frequency signal and transmitting it via an antenna 420; each transmitter 416 samples a respective input symbol stream to obtain a respective sampled signal stream; each transmitter 416 further processes (e.g., digital-to-analog converts, amplifies, filters, upconverts, etc.) the respective sample stream to obtain a downstream signal; analog transmit beamforming is processed in transmitter 416.

In downlink transmission, the processing related to the user equipment (UE 450) may include:

the receiver 456 is configured to convert the radio frequency signals received through the antenna 460 into baseband signals for provision to a MIMO detector 472; analog receive beamforming is processed in the receiver 456;

a MIMO detector 472 for MIMO detecting the signal received from the receiver 456 and providing the MIMO detected baseband signal to the receive processor 452;

The receive processor 452 extracts the analog receive beamforming related parameters output to the MIMO detector 472, the MIMO detector 472 outputting the analog receive beamforming vector to the receiver 456;

the receive processor 452 implements various signal receive processing functions for the L1 layer (i.e., physical layer) including decoding, deinterleaving, descrambling, demodulation, physical layer control signaling extraction, and the like;

controller/processor 490 receives the bit stream output by receive processor 452, provides header decompression, decryption, packet segmentation concatenation and reordering, and multiplexing de-multiplexing between logical and transport channels to implement L2 layer protocols for the user plane and control plane;

the controller/processor 490 may be associated with a memory 480 that stores program codes and data. Memory 480 may be a computer-readable medium;

controller/processor 490 passes control information for downstream reception, which is processed by transmit processor 455 for upstream transmissions, to receive processor 452.

In uplink transmission, the processing related to the user equipment (UE 450) may include:

the data source 467 provides upper layer packets to the controller/processor 490, the controller/processor 490 providing header compression, encryption, packet segmentation connection and reordering, and multiplexing de-multiplexing between logical and transport channels to implement L2 layer protocols for the user plane and control plane; the upper layer packet may include data or control information such as UL-SCH (UplinkShared Channel );

controller/processor 490 passes control information for uplink transmissions, which is processed by receive processor 452 for downlink reception, to transmit processor 455;

the transmit processor 455 receives an output bit stream of the controller/processor 490, implements various signal transmission processing functions for the L1 layer (i.e., physical layer) including coding, interleaving, scrambling, modulation, power control/allocation, and physical layer control signaling (including PUCCH, SRS (sounding reference signal)) generation, etc.;

MIMO transmit processor 471 may spatially process the data symbols, control symbols, or reference signal symbols (e.g., multi-antenna precoding, digital beamforming) and output baseband signals to transmitter 456;

MIMO transmit processor 471 outputs the analog transmit beamforming vector to transmitter 457;

transmitter 456 is configured to convert the baseband signals provided by MIMO transmit processor 471 to radio frequency signals and transmit them via antenna 460; each transmitter 456 samples a respective input symbol stream to produce a respective sampled signal stream. Each transmitter 456 further processes (e.g., digital-to-analog converts, amplifies, filters, upconverts, etc.) the respective sample stream to an upstream signal. Analog transmit beamforming is processed in transmitter 456.

In uplink transmission, the processing related to the base station apparatus (410) may include:

the receiver 416 is configured to convert the radio frequency signals received through the antenna 420 into baseband signals for the MIMO detector 442; analog receive beamforming is processed in receiver 416;

MIMO detector 442 is configured to perform MIMO detection on the signals received from receiver 416 and provide MIMO detected symbols to receive processor 412;

MIMO detector 442 outputs analog receive beamforming vectors to receiver 416;

the receive processor 412 implements various signal receive processing functions for the L1 layer (i.e., physical layer) including decoding, deinterleaving, descrambling, demodulation, physical layer control signaling extraction, and the like;

the controller/processor 440 receives the bit stream output by the receive processor 412, provides header decompression, decryption, packet segmentation concatenation and reordering, and multiplexing de-multiplexing between logical and transport channels to implement L2 layer protocols for the user plane and control plane;

controller/processor 440 passes control information for the uplink transmission, which is obtained by processing the downlink transmission by transmit processor 415, to receive processor 412;

As an embodiment, the UE450 apparatus 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 to, with the at least one processor, cause the UE450 apparatus at least to: performing K classes of energy detection for which K spatial reception schemes are respectively used, the K being a positive integer greater than 1; judging whether a first wireless signal can be sent on a target time-frequency resource, wherein the K-type energy detection is used for judging whether the first wireless signal can be sent on the target time-frequency resource; and transmitting the first wireless signal on the target time-frequency resource, or discarding the transmission of the first wireless signal on the target time-frequency resource.

As an embodiment, the UE450 includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: performing K classes of energy detection for which K spatial reception schemes are respectively used, the K being a positive integer greater than 1; judging whether a first wireless signal can be sent on a target time-frequency resource, wherein the K-type energy detection is used for judging whether the first wireless signal can be sent on the target time-frequency resource; and transmitting the first wireless signal on the target time-frequency resource, or discarding the transmission of the first wireless signal on the target time-frequency resource.

As an embodiment, the UE450 apparatus 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 to, with the at least one processor, cause the UE450 apparatus at least to: monitoring a first wireless signal on a target time-frequency resource; the transmitter of the first wireless signal performs K kinds of energy detection, K spatial receiving schemes are used for the K kinds of energy detection respectively, K is a positive integer greater than 1, and all K kinds of energy detection are used for judging whether the first wireless signal can be transmitted on the target time-frequency resource.

As an embodiment, the UE450 includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: monitoring a first wireless signal on a target time-frequency resource; the transmitter of the first wireless signal performs K kinds of energy detection, K spatial receiving schemes are used for the K kinds of energy detection respectively, K is a positive integer greater than 1, and all K kinds of energy detection are used for judging whether the first wireless signal can be transmitted on the target time-frequency resource.

As an embodiment, the gNB410 apparatus 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 gNB410 means at least: performing K classes of energy detection for which K spatial reception schemes are respectively used, the K being a positive integer greater than 1; judging whether a first wireless signal can be sent on a target time-frequency resource, wherein the K-type energy detection is used for judging whether the first wireless signal can be sent on the target time-frequency resource; and transmitting the first wireless signal on the target time-frequency resource, or discarding the transmission of the first wireless signal on the target time-frequency resource.

As an embodiment, the gNB410 includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: performing K classes of energy detection for which K spatial reception schemes are respectively used, the K being a positive integer greater than 1; judging whether a first wireless signal can be sent on a target time-frequency resource, wherein the K-type energy detection is used for judging whether the first wireless signal can be sent on the target time-frequency resource; and transmitting the first wireless signal on the target time-frequency resource, or discarding the transmission of the first wireless signal on the target time-frequency resource.

As an embodiment, the gNB410 apparatus 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 gNB410 means at least: monitoring a first wireless signal on a target time-frequency resource; the transmitter of the first wireless signal performs K kinds of energy detection, K spatial receiving schemes are used for the K kinds of energy detection respectively, K is a positive integer greater than 1, and all K kinds of energy detection are used for judging whether the first wireless signal can be transmitted on the target time-frequency resource.

As an embodiment, the gNB410 includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: monitoring a first wireless signal on a target time-frequency resource; the transmitter of the first wireless signal performs K kinds of energy detection, K spatial receiving schemes are used for the K kinds of energy detection respectively, K is a positive integer greater than 1, and all K kinds of energy detection are used for judging whether the first wireless signal can be transmitted on the target time-frequency resource.

As one embodiment, UE450 corresponds to a first type of communication node in the present application.

As an embodiment, UE450 corresponds to a second type of communication node in the present application.

As one embodiment, the gNB410 corresponds to a first type of communication node in the present application.

As one embodiment, the gNB410 corresponds to a second type of communication node in the present application.

As one embodiment, receiver 416, mimo detector 442, and receive processor 412 are used to perform the K-class energy detection described herein.

For one embodiment, the receive processor 412 is used to determine whether the first wireless signal can be transmitted on the target time-frequency resource.

As one example, at least the first three of transmit processor 415, mimo transmit processor 441, transmitter 416, and controller/processor 440 are used to transmit the first wireless signal in the present application.

As one example, receiver 456, mimo detector 472, and receive processor 452 are used to monitor the first wireless signal on a target time-frequency resource.

As one embodiment, receiver 416, mimo detector 442 and receive processor 412 are used to receive the first control signal in this application.

As one example, at least the first three of transmit processor 455, mimo transmit processor 471, transmitter 456 and controller/processor 490 are used to transmit the first control signal in this application.

As one example, receiver 456, mimo detector 472, and receive processor 452 are used to perform the K-class energy detection described herein.

For one embodiment, the receive processor 452 is configured to determine whether the first wireless signal can be transmitted on the target time-frequency resource.

As one example, at least the first three of transmit processor 455, mimo transmit processor 471, transmitter 456, and controller/processor 490 are used to transmit the first wireless signal in the present application.

As one embodiment, receiver 416, mimo detector 442 and receive processor 412 are used to monitor the first wireless signal on a target time-frequency resource.

As one example, receiver 456, mimo detector 472 and receive processor 452 are used to receive the first control signal in this application.

As one example, at least the first three of transmit processor 415, mimo transmit processor 441, transmitter 416, and controller/processor 440 are used to transmit the first control signal in the present application.

Example 5

Embodiment 5 illustrates a flow chart of wireless transmission, as shown in fig. 5. In fig. 5, communication is between a first type of communication node and a second type of communication node. The steps identified in block F1 of the figure are optional and the steps identified in block F2 may not be performed.

For the followingFirst class communication node C1The first control signal is received in step S11, the K-type energy detection is performed in step S12, it is determined in step S13 whether or not the first radio signal can be transmitted on the target time-frequency resource, and the first radio signal is transmitted on the target time-frequency resource in step S14.

For the followingSecond class communication node C2In step S21, a first control signal is sent, inThe first wireless signal is monitored on the target time-frequency resource in step S22.

In embodiment 5, K spatial reception schemes are used by C1 for the K classes of energy detection, respectively, the K being a positive integer greater than 1; c1 judges whether a first wireless signal can be sent on a target time-frequency resource, and the K-type energy detection is used for judging whether the first wireless signal can be sent on the target time-frequency resource; if it is judged that the first wireless signal can be sent on the target time-frequency resource, the step in F2 exists, C1 sends the first wireless signal on the target time-frequency resource, or the step in F2 does not exist, C1 gives up sending the first wireless signal on the target time-frequency resource; c2 monitors the first wireless signal on the target time-frequency resource.

As one embodiment, the monitoring means that C2 decodes the wireless signal received on the target time-frequency resource to determine whether the wireless signal is the first wireless signal.

As one embodiment, the monitoring means that C2 cannot determine whether the first radio signal is transmitted on the target time-frequency resource before decoding the radio signal received on the target time-frequency resource is successful.

As an embodiment, C1 performs a K-class comparison, where the K-class energy detection results are used by C1 for the K-class comparison, and K power thresholds are used by C1 for the K-class comparison, and the K-class comparison results are used by C1 to determine whether the first wireless signal can be transmitted on the target time-frequency resource.

As an embodiment, the time-frequency resource occupied by the K-type energy detection is used by C1 to determine the target time-frequency resource.

As an embodiment, the first control signal indicates at least one of the K spatial reception schemes.

As one embodiment, C1 does not transmit wireless signals on the time resources between the time resources occupied by the K-class energy detection.

As one embodiment, C1 is a user equipment.

As one example, C1 is a base station.

Example 6

Embodiment 6 illustrates a K-class energy detection and K-space reception scheme in the present application, as shown in fig. 6. In fig. 6, grey triangles are the first type of communication nodes in this application.

In embodiment 6, K space receiving schemes in the present application are used by the first type communication node in the present application for K type energy detection in the present application, where the K space receiving schemes generate K different space coverage, and for wireless signals from the same direction, detection powers obtained by performing energy detection using the K space receiving schemes are different; the K-type energy detection is used for judging whether the first wireless signal in the application can be sent on the target time-frequency resource in the application; if the first wireless signal is transmitted on the target time-frequency resource, the transmission beam generated by the spatial transmission scheme #1 is used to transmit the first wireless signal.

As an embodiment, at least one spatial reception scheme among the K spatial reception schemes is used for omni-directional reception, as shown in spatial reception scheme # 1.

As an embodiment, the direction of the reception beam generated by at least one spatial reception scheme of the K spatial reception schemes is related to the spatial transmission direction of the transmission beam generated by the spatial transmission scheme #1, for example, the spatial coverage of the reception beam of the spatial reception scheme #k coincides with the spatial coverage of the transmission beam of the spatial transmission scheme #1, or the spatial coverage of the reception beam of the spatial reception scheme #k covers the spatial coverage of the transmission beam of the transmission scheme # 1.

As an embodiment, the detection powers obtained by the K-type energy detection are respectively used for K-type comparison in the application, and K power thresholds are respectively used for the K-type comparison.

As an embodiment, at least two different K power thresholds exist among the K power thresholds.

As an embodiment, the larger the spatial coverage of the spatial reception scheme among the K spatial reception schemes, the larger the corresponding power threshold among the K power thresholds.

As an embodiment, the K power thresholds are determined by default.

As an embodiment, the K power thresholds are message configured.

As an embodiment, in the K-type comparison, the detected powers obtained by the K-type energy detection are respectively lower than the K power thresholds, and the first-type communication node determines that the first wireless signal can be sent on the target time-frequency resource, and the first wireless signal is sent on the target time-frequency resource.

As an embodiment, in the K-type comparison, at least one detected power detected by the K-type energy is not lower than a corresponding power threshold of the K power thresholds, and the first-type communication node determines that the first wireless signal cannot be transmitted on the target time-frequency resource, and the target time-frequency resource is not used for transmitting the first wireless signal.

As an embodiment, the sum of the maximum equivalent omni-directional radiation power used for transmitting the first wireless signal and the power threshold corresponding to the K-th class of energy detection is a first value.

As an embodiment, the first value is determined by default.

As an embodiment, the first value is base station configured.

As an embodiment, the target time-frequency resource immediately follows the time-frequency resource occupied by the K-class energy detection.

As one embodiment, the K-class energy detection is used for K channel access procedures.

As an embodiment K antenna groups are used to perform the K classes of energy detection separately.

As an embodiment, the first type communication node performs the K type energy detection simultaneously, and there is no antenna that belongs to two antenna groups of the K antenna groups simultaneously.

As an embodiment, the first type communication node performs the K type energy detection in a time division multiplexed manner, and there is one target antenna group simultaneously included by the K antenna groups.

As an embodiment, at least one spatial coverage of the K spatial reception schemes covers a spatial coverage of another spatial reception scheme, such as spatial reception scheme #1 and spatial reception scheme #k in fig. 6, and such as spatial reception scheme #2 and spatial reception scheme #k in fig. 6.

As an embodiment, the first class communication node does not transmit any wireless signal on the time resources between the time resources occupied by the K class energy detection.

As an embodiment, the first type of communication node is a user equipment.

As an embodiment, the first type of communication node is a base station.

Example 7

Embodiment 7 illustrates a first spatial reception scheme and a second spatial reception scheme in the present application, as shown in fig. 7A and 7B. In fig. 7A and fig. 7B, the square filled beam is the reception beam generated by the second spatial reception scheme, and the gray filled triangle is the first type of communication node in the present application.

In embodiment 7, the spatial coverage of the first spatial reception scheme covers the spatial coverage of the second spatial reception scheme. One case is: as shown in fig. 7A, the first spatial reception scheme is used to generate the spatial coverage for omni-directional reception and the second spatial reception scheme is used to generate the spatial coverage for directional reception. Another case is: as shown in fig. 7B, the first spatial reception scheme is used to generate a wider reception beam, the second spatial reception scheme is used to generate a narrower reception beam, and the reception beam of the first spatial reception scheme covers the reception beam of the second spatial reception scheme.

Example 8

Embodiment 8 illustrates an antenna structure of a first type of communication node in the present application, as shown in fig. 8. As shown in fig. 8, the first type of communication device is equipped with M radio chains, namely, radio chain #1, radio chain #2, …, and radio chain #m. The M radio frequency chains are connected to one baseband processor.

As an embodiment, the bandwidth supported by any one of the M radio frequency chains does not exceed the bandwidth of the sub-band configured by the first type communication node.

As an embodiment, M1 radio frequency chains of the M radio frequency chains are overlapped through antenna Virtualization (Virtualization) to generate an antenna port (antenna port), the M1 radio frequency chains are respectively connected with M1 antenna groups, and each antenna group of the M1 antenna groups includes a positive integer and an antenna. One antenna group is connected to the baseband processor through one radio frequency chain, and different antenna groups correspond to different radio frequency chains. The mapping coefficients of the antennas included in any one of the M1 antenna groups to the antenna ports form an analog beamforming vector for that antenna group. The coefficients of the phase shifter and the antenna switch state correspond to the analog beamforming vector. The corresponding analog beamforming vectors of the M1 antenna groups are diagonally arranged to form an analog beamforming matrix of the antenna port. The mapping coefficients of the M1 antenna groups to the antenna ports form digital beam forming vectors of the antenna ports.

As one embodiment, the spatial reception scheme and the spatial transmission scheme in the present application include adjustment of the states used for the corresponding antenna switches and the coefficients of the phase shifters

As an embodiment, the spatial reception scheme and the spatial transmission scheme in the present application are used to generate beamforming coefficients of the corresponding baseband.

As one example, antenna switches may be used to control the beam width, with the larger the working antenna spacing, the wider the beam.

As an embodiment, the M1 radio frequency chains belong to the same panel.

As an example, the M1 radio frequency chains are QCL (QuasiCo-localized).

As an embodiment, M2 radio frequency chains of the M radio frequency chains are overlapped through antenna Virtualization (Virtualization) to generate a transmitting beam or a receiving beam, the M2 radio frequency chains are respectively connected with M2 antenna groups, and each antenna group of the M2 antenna groups includes a positive integer number of antennas. One antenna group is connected to the baseband processor through one radio frequency chain, and different antenna groups correspond to different radio frequency chains. The mapping coefficients of the antennas included in any one of the M2 antenna groups to the receive beam form an analog beamforming vector for this receive beam. The corresponding analog beamforming vectors of the M2 antenna groups are diagonally arranged to form an analog beamforming matrix of the receive beam. The mapping coefficients of the M2 antenna groups to the receive beams constitute a digital beamforming vector of the receive beams.

As an embodiment, the M1 radio frequency chains belong to the same panel.

As an example, the M2 radio frequency chains are QCL.

As an embodiment, the directions of the analog beams formed by the M radio frequency chains are shown in spatial ji receiving schemes #1- #k and spatial transmitting scheme #1 in fig. 6, respectively.

As an embodiment, the sum of the number of layers configured by the first type communication device on each of the parallel subbands is less than or equal to the M.

As an embodiment, the sum of the number of antenna ports configured by the first type of communication device on each of the parallel subbands is less than or equal to the M.

As an embodiment, for each of the parallel subbands, the layer-to-antenna port mapping is related to both the number of layers and the number of antenna ports.

As an embodiment, the layer-to-antenna port mapping is default (i.e., does not need to be explicitly configured) for each of the parallel subbands.

As one embodiment, the layer-to-antenna ports are one-to-one mapped.

As one embodiment, a layer is mapped onto multiple antenna ports.

Example 9

Embodiment 9 illustrates a block diagram of the processing means in the first type of communication node, as shown in fig. 9. In fig. 9, a first type of communication node processing apparatus 900 is mainly composed of a first receiver module 901, a first processor module 902 and a first transmitter module 903.

As an embodiment, the first receiver module 901 includes the receiver 416, the mimo detector 442, and the reception processor 412 in embodiment 4.

As an embodiment, the first processor module 902 includes the receiving processor 412 of embodiment 4.

As an embodiment, the first transmitter module 903 includes at least three of the transmit processor 415, the mimo transmit processor 441, the transmitter 416, and the controller/processor 440 in embodiment 4.

As an embodiment, the first receiver module 901 includes the receiver 456, the mimo detector 472, and the reception processor 452 in embodiment 4.

As an embodiment, the first processor module 902 includes the receiving processor 452 of embodiment 4.

As an example, the first transmitter module 903 includes at least three of the transmit processor 455, mimo transmit processor 471, transmitter 456, and controller/processor 490 in example 4.

-a first receiver module 901: k classes of energy detection are performed for which K spatial reception schemes are used, respectively, the K being a positive integer greater than 1.

-a first processor module 902: and judging whether the first wireless signal can be sent on the target time-frequency resource or not, wherein the K-type energy detection is used for judging whether the first wireless signal can be sent on the target time-frequency resource or not.

-a first transmitter module 903: and transmitting the first wireless signal on the target time-frequency resource, or discarding the transmission of the first wireless signal on the target time-frequency resource.

For one embodiment, the first processor module 902 performs K analog comparison; the K-type energy detection results are used for the K-type comparison, the K power thresholds are used for the K-type comparison, and the K-type comparison results are used for judging whether the first wireless signal can be sent on the target time-frequency resource.

As an embodiment, the first receiver module 901 receives a first control signal indicating at least one spatial reception scheme among the K spatial reception schemes.

As an embodiment, the first type of communication node is a user equipment.

As an embodiment, the first type of communication node is a base station.

Example 10

Embodiment 10 illustrates a block diagram of the processing means in the second class of communication nodes, as shown in fig. 10. In fig. 10, the second type of communication node processing means 1000 mainly consists of a first transceiver module 1001.

As an embodiment, the first transceiver module 1001 includes the receiver 456, the mimo detector 472, and the receive processor 452 of embodiment 4.

As an embodiment, the first transceiver module 1001 includes the receiver 416, the mimo detector 442, and the receive processor 412 of embodiment 4.

As an embodiment, the first transceiver module 1001 transmits a first control signal indicating at least one of the K spatial reception schemes.

As an embodiment, the second type of communication node is a base station.

As an embodiment, the second type of communication node is a user equipment.

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described methods may be implemented by a program that instructs associated hardware, and the program may be stored on 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 using one or more integrated circuits. Accordingly, each module unit in the above embodiment may be implemented in a hardware form or may be implemented in a software functional module form, and the application is not limited to any specific combination of software and hardware. The UE or the terminal in the present application includes, but is not limited to, a mobile phone, a tablet computer, a notebook, an internet card, a low power device, an eMTC device, an NB-IoT device, a vehicle-mounted communication device, and other wireless communication devices. The base station or the network side device in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission receiving node TRP, and other wireless communication devices.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application are intended to be included within the scope of the present application.

Claims

1. A method in a first type of communication node for wireless communication, comprising:

performing K-class energy detection, the K-class energy detection being used for channel access over an unlicensed spectrum, K spatial reception schemes being used for the K-class energy detection, respectively, the K being a positive integer greater than 1; the K-class energy detection is used for K channel access procedures; the K types of energy detection respectively obtain K detection power groups, and the detection power in one detection power group in the K detection power groups is the result that the corresponding type of energy detection is executed once or a plurality of times;

when the detection power in the K detection power groups is lower than the corresponding power threshold value in the K power threshold values, the first wireless signal is sent on the target time-frequency resource; and when at least one detection power in the K detection power groups is not lower than the corresponding power threshold value in the K power threshold values, discarding to send the first wireless signal on the target time-frequency resource.

2. The method according to claim 1, characterized in that it comprises:

performing a K-phase comparison;

3. The method of claim 2, wherein the maximum equivalent omni-directional radiation power used to transmit the first wireless signal is related to one of the K power thresholds; the maximum equivalent omni-directional radiation power of the first wireless signal is equal to a first value minus one of the K power thresholds.

4. A method according to any of claims 1 to 3, characterized in that the time-frequency resources occupied by the K-class energy detection are used for determining the target time-frequency resources.

5. The method according to any of claims 1 to 4, wherein the spatial coverage of each of the K spatial reception schemes is different.

6. The method according to any of claims 1 to 5, wherein the spatial transmission direction of the first wireless signal is related to one of the K spatial reception schemes.

7. The method according to any of claims 1 to 6, wherein the time resources each occupied by the K spatial reception schemes comprises a first time resource.

8. The method according to any of claims 1 to 7, wherein the time resources occupied by two of the K spatial reception schemes comprise a second time resource and a third time resource, respectively, the second time resource being orthogonal in time domain to the third time resource.

9. The method according to any of claims 1 to 8, wherein the K spatial reception schemes comprise a first spatial reception scheme and a second spatial reception scheme, a spatial coverage of the first spatial reception scheme covering a spatial coverage of the second spatial reception scheme.

10. The method of claim 9, wherein a first power threshold is a power threshold of the K power thresholds corresponding to the first spatial reception scheme, and a second power threshold is a power threshold of the K power thresholds corresponding to the second spatial reception scheme, the second power threshold being less than the first power threshold.

11. The method according to any one of claims 1 to 10, comprising:

12. The method according to any of claims 1 to 11, wherein the first class of communication nodes do not transmit wireless signals on time resources between time resources occupied by the K class of energy detection.

13. The method according to any of the claims 1 to 12, characterized in that the first type of communication node is a user equipment or the first type of communication node is a base station.

14. A method in a second class of communication nodes for wireless communication, comprising:

monitoring a first wireless signal on a target time-frequency resource;

wherein the sender of the first wireless signal performs K-class energy detection, the K-class energy detection being used for channel access on an unlicensed spectrum, K spatial reception schemes being used for the K-class energy detection, respectively, the K being a positive integer greater than 1; the K-class energy detection is used for K channel access procedures; the K types of energy detection respectively obtain K detection power groups, and the detection power in one detection power group in the K detection power groups is the result that the corresponding type of energy detection is executed once or a plurality of times; the K-class energy detection is used to determine whether the first wireless signal can be transmitted on the target time-frequency resource; when the detection power in the K detection power groups is lower than the corresponding power threshold value in the K power threshold values, the first wireless signal is sent on the target time-frequency resource; and when at least one detected power in the K detected power groups is not lower than the corresponding power threshold value in the K power thresholds, the first wireless signal is abandoned to be transmitted on the target time-frequency resource.

15. The method according to claim 14, comprising:

16. The method according to claim 14 or 15, wherein the second type of communication node is a base station or the second type of communication node is a user equipment.

17. A first type of communication node device for wireless communication, comprising:

a first receiver module that performs K-class energy detection, the K-class energy detection being used for channel access over an unlicensed spectrum, K spatial reception schemes being used for the K-class energy detection, respectively, the K being a positive integer greater than 1; the K-class energy detection is used for K channel access procedures; the K types of energy detection respectively obtain K detection power groups, and the detection power in one detection power group in the K detection power groups is the result that the corresponding type of energy detection is executed once or a plurality of times;

A first transmitter module configured to transmit the first wireless signal on the target time-frequency resource when the detected powers in the K detected power groups are all lower than the corresponding power threshold of the K power thresholds; and when at least one detection power in the K detection power groups is not lower than the corresponding power threshold value in the K power threshold values, discarding to send the first wireless signal on the target time-frequency resource.

18. The first class of communication node apparatus of claim 17, wherein said first processor module performs K analog comparison; the K-type energy detection results are used for the K-type comparison, the K power thresholds are used for the K-type comparison, and the K-type comparison results are used for judging whether the first wireless signal can be sent on the target time-frequency resource.

19. The first type of communication node device of claim 18, wherein the maximum equivalent omni-directional radiation power used to transmit the first wireless signal is related to one of the K power thresholds; the maximum equivalent omni-directional radiation power of the first wireless signal is equal to a first value minus one of the K power thresholds.

20. A first type of communication node device according to any of claims 17 to 19, wherein the time-frequency resources occupied by the K-type energy detection are used to determine the target time-frequency resources.

21. The first type of communication node device according to any of claims 17 to 20, wherein the spatial coverage of each of the K spatial reception schemes is different.

22. The communication node device of any of claims 17 to 21, wherein the spatial transmission direction of the first wireless signal is related to one of the K spatial reception schemes.

23. A first type of communication node arrangement according to any of claims 17 to 22, wherein the time resources each occupied by the K spatial reception schemes comprise a first time resource.

24. The communication node device of any of claims 17 to 23, wherein the time resources occupied by two of the K spatial reception schemes comprise a second time resource and a third time resource, respectively, the second time resource being orthogonal in time domain to the third time resource.

25. The first type of communication node device according to any of claims 17 to 24, wherein the K spatial reception schemes comprise a first spatial reception scheme and a second spatial reception scheme, a spatial coverage of the first spatial reception scheme covering a spatial coverage of the second spatial reception scheme.

26. The first type of communication node device of claim 25, wherein a first power threshold is a power threshold of the K power thresholds corresponding to the first spatial reception scheme, and a second power threshold is a power threshold of the K power thresholds corresponding to the second spatial reception scheme, the second power threshold being less than the first power threshold.

27. The first type of communication node device according to any of claims 17 to 26, wherein the first receiver module receives a first control signal indicating at least one of the K spatial reception schemes.

28. A first type of communication node arrangement according to any of claims 17 to 27, wherein the first type of communication node does not transmit wireless signals on time resources between time resources occupied by the K type of energy detection.

29. A first type of communication node arrangement according to any of claims 17 to 28, characterized in that the first type of communication node is a user equipment or the first type of communication node is a base station.

30. A second type of communication node device for wireless communication, comprising:

31. The second type of communication node device of claim 30, wherein the first transceiver module transmits a first control signal indicating at least one of the K spatial reception schemes.

32. A second type of communication node device according to claim 30 or 31, characterized in that the second type of communication node is a base station or the second type of communication node is a user equipment.