CN116056233A - Method and apparatus in a communication node for wireless communication - Google Patents

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

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Publication number
CN116056233A
CN116056233A CN202310043386.3A CN202310043386A CN116056233A CN 116056233 A CN116056233 A CN 116056233A CN 202310043386 A CN202310043386 A CN 202310043386A CN 116056233 A CN116056233 A CN 116056233A
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signal
reference signal
reference signals
spatial
type
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陈晋辉
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Shanghai Langbo Communication Technology Co Ltd
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Shanghai Langbo Communication Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method and apparatus in a communication node for wireless communication is disclosed. The communication node sequentially receives K reference signal groups, receives a first control signal, executes first type energy detection by using a first space receiving parameter group, judges whether a first wireless signal can be sent on a target time-frequency resource or not by using the result of the first type energy detection, and sends the first wireless signal on the target time-frequency resource or gives up sending the first wireless signal on the target time-frequency resource, wherein the K reference signal groups are divided into M reference signal subsets, the first control signal indicates a first reference signal subset in the M reference signal subsets, and the first space receiving parameter group is used for receiving the first reference signal group included in the first reference signal subset. According to the method and the device, the opposite terminal communication equipment recommends the direction of the directional LBT, so that the efficiency and the direction accuracy of the directional LBT are improved, and the transmission efficiency and the timeliness of the system are improved.

Description

Method and apparatus in a communication node for wireless communication
This application is a divisional application of the following original applications:
Filing date of the original application: 2018, 01, 17
Number of the original application: 201810045728.4
-the name of the invention of the original application: 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 Partner Project, third generation partnership project) LTE (Long-term Evolution) systems, data transmission can only occur on licensed spectrum, however, with a drastic increase in traffic, especially in some urban areas, the licensed spectrum may be difficult to meet the traffic demand. Communications on unlicensed spectrum in Release 13 and Release 14 are introduced by the cellular system and used for transmission of downlink and uplink data. To ensure compatibility with access technologies on other unlicensed spectrum, LBT (Listen Before Talk ) technology is adopted by LAA (Licensed Assisted Access, licensed spectrum 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 5G NR (New Radio Access Technology ) is in progress, in which Massive (Massive) MIMO (Multi-Input Multi-Output) is one of research hotspots for next generation mobile communications. 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:
Receiving K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M;
receiving a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals;
performing a first type of energy detection with a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals;
judging whether a first wireless signal can be sent on a target time-frequency resource or not by adopting the result of the first type of energy detection;
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 a wireless transmission over an unlicensed spectrum, a sender of a wireless signal performs LBT by itself, and a receiver of the wireless signal does not perform a recommendation regarding the direction of LBT.
As an embodiment, one benefit of the above method is that: the opposite-end communication device communicating with the first-type communication node can recommend the first-type communication node to perform LBT in a specific direction, so that the LBT efficiency is improved.
As an embodiment, another benefit of the above method is that: the first type of communication node is user equipment, and the base station equipment can assist the user equipment to perform directional LBT by utilizing the advantages of the number of antennas, the number of antenna panels, the receiving sensitivity, the good hardware configuration, the excellent position and the like, so that the LBT efficiency is improved.
According to an aspect of the present application, the above method is characterized in that L sets of spatial reception parameters are used for receiving L sets of reference signals in the first subset of reference signals, respectively, the first set of spatial reception parameters being one of the L sets of spatial reception parameters, the L being a positive integer greater than 1.
As an embodiment, one benefit of the above method is that: for the reference signal subset recommended by the opposite-end communication node, the optimal space receiving parameter set is selected from the plurality of space receiving parameter sets, so that the direction of the first-type communication node LBT is close to the recommended direction of the opposite-end communication node, and the LBT efficiency is improved.
According to an aspect of the present application, the above method is characterized in that the transmitters of the K reference signal groups perform M kinds of energy detection by using the M spatial reception parameter groups, respectively, the M spatial reception parameter groups are in one-to-one correspondence with the M spatial transmission parameter groups, and a result of the M kinds of energy detection is used to determine the first reference signal subset.
As an embodiment, one benefit of the above method is that: the opposite communication node of the first type communication node assists the first type communication through energy detection
According to one aspect of the present application, the method is characterized by comprising
Performing a second type of energy detection with a second set of spatial reception parameters, the second set of spatial reception parameters being different from the first set of spatial reception parameters;
and judging whether the first wireless signal can be sent on the target time-frequency resource or not by adopting the result of the second type energy detection.
As an embodiment, one benefit of the above method is that: and (3) performing energy detection by using a plurality of groups of space receiving parameter groups, thereby improving the accuracy of the directional LBT.
According to an aspect of the present application, the above method is characterized in that the second set of spatial reception parameters is one of the L sets of spatial reception parameters, the second set of spatial reception parameters being used for receiving a second set of reference signals comprised in the K sets of reference signals, the second set of reference signals being different from the first set of reference signals.
As an embodiment, one benefit of the above method is that: and defining the self-selected LBT direction of the first type communication nodes, so as to facilitate system management and reporting.
According to an aspect of the present application, the above method is characterized in that the first subset of reference signals comprises the second set of reference signals.
As an embodiment, one benefit of the above method is that: and performing beam scanning on the receiving direction of the opposite communication node recommended by the opposite communication node to find the optimal LBT direction of the first type communication node.
According to an aspect of the application, the above method is characterized by transmitting a second control signal, said second control signal being indicative of said second set of reference signals.
As an embodiment, one benefit of the above method is that: the first type communication node indicates the direction of LBT thereof, and is convenient for the opposite terminal communication node to receive the wireless signal sent by the first type communication node.
According to an aspect of the present application, the above method is characterized in that the set of spatial transmission parameters used for transmitting the first wireless signal is related to the set of second spatial reception parameters.
As an embodiment, one benefit of the above method is that: the wireless signals after the directional LBT are transmitted in the direction of the directional LBT, avoiding interference to ongoing communications in other directions.
According to an aspect of the present application, the above method is characterized in that the set of spatial transmission parameters used for transmitting the first wireless signal is related to the set of first spatial reception parameters.
As an embodiment, one benefit of the above method is that: the wireless signals after the directional LBT are transmitted in the direction of the directional LBT, avoiding interference to ongoing communications in other directions.
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:
transmitting K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M;
transmitting a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals;
Monitoring a first wireless signal on a target time-frequency resource;
wherein a receiver of the first control signal performs a first type of energy detection using a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; the receiver of the first control signal adopts the result of the first type energy detection to judge whether a first wireless signal can be sent on the target time-frequency resource or not; the receiver of the first control signal transmits a first wireless signal on the target time-frequency resource, or the receiver of the first signal gives up transmitting the first wireless signal on the target time-frequency resource.
According to an aspect of the present application, the above method is characterized in that L sets of spatial reception parameters are used for receiving L sets of reference signals in the first subset of reference signals, respectively, the first set of spatial reception parameters being one of the L sets of spatial reception parameters, the L being a positive integer greater than 1.
According to an aspect of the present application, the above method is characterized in that the second class communication node performs M class energy detection by using the M spatial reception parameter sets, respectively, the M spatial reception parameter sets are in one-to-one correspondence with the M spatial transmission parameter sets, and a result of the M class energy detection is used to determine the first reference signal subset.
According to an aspect of the application, the above method is characterized in that the receiver of the first control signal performs a second type of energy detection using a second set of spatial reception parameters, which is different from the first set of spatial reception parameters; and the receiver of the first control signal adopts the result of the second type energy detection to judge whether the first wireless signal can be sent on the target time-frequency resource.
According to an aspect of the present application, the above method is characterized in that the second set of spatial reception parameters is one of the L sets of spatial reception parameters, the second set of spatial reception parameters being used for receiving a second set of reference signals comprised in the K sets of reference signals, the second set of reference signals being different from the first set of reference signals.
According to an aspect of the present application, the above method is characterized in that the first subset of reference signals comprises the second set of reference signals.
According to one aspect of the application, the above method is characterized in that it comprises receiving a second control signal, said second control signal being indicative of said second set of reference signals.
According to an aspect of the present application, the above method is characterized in that the set of spatial reception parameters used for receiving the first radio signal is related to the set of spatial transmission parameters used for transmitting the second reference signal.
According to an aspect of the present application, the above method is characterized in that the set of spatial reception parameters used for receiving the first radio signal is related to the set of spatial transmission parameters used for transmitting the first reference signal set.
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 that receives K reference signal groups, the K reference signal groups being divided into M reference signal subsets, M spatial transmission parameter groups being used to transmit reference signal groups among the M reference signal subsets, respectively, the M being a positive integer greater than 1, the K being a positive integer not less than the M;
a second receiver module that receives a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals;
a third receiver module that performs a first type of energy detection using a first set of spatial reception parameters that are used to receive a first set of reference signals comprised by the first subset of reference signals;
The first processor module is used for judging whether a first wireless signal can be sent on the target time-frequency resource or not by adopting the result of the first type energy detection;
and the fourth transmitter module is used for 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-mentioned first type of communication node device is characterized in that L sets of spatial reception parameters are used for receiving L sets of reference signals in the first subset of reference signals, respectively, the first set of spatial reception parameters being one of the L sets of spatial reception parameters, the L being a positive integer greater than 1.
As an embodiment, the above-mentioned first type of communication node device is characterized in that the transmitters of the K reference signal groups perform M types of energy detection by using the M spatial reception parameter groups, respectively, the M spatial reception parameter groups and the M spatial transmission parameter groups are in one-to-one correspondence, and a result of the M types of energy detection is used to determine the first reference signal subset.
As an embodiment, the above first type of communication node device is characterized in that the third receiver module performs a second type of energy detection using a second set of spatial reception parameters, the second set of spatial reception parameters being different from the first set of spatial reception parameters; and the first processor module judges whether the first wireless signal can be sent on the target time-frequency resource or not by adopting the result of the second type energy detection.
As an embodiment, the above-mentioned first type of communication node device is characterized in that the second spatial reception parameter set is one of the L spatial reception parameter sets, the second spatial reception parameter set being used for receiving a second reference signal set included in the K reference signal sets, the second reference signal set being different from the first reference signal set.
As an embodiment, the first type of communication node device is characterized in that the first subset of reference signals comprises the second set of reference signals.
As an embodiment, the first type of communication node device is characterized in that the fourth transmitter module transmits a second control signal, the second control signal indicating the second reference signal group.
As an embodiment, the above-mentioned first type of communication node device is characterized in that the set of spatial transmission parameters used for transmitting the first wireless signal is related to the set of second spatial reception parameters.
As an embodiment, the above-mentioned first type of communication node device is characterized in that the set of spatial transmission parameters used for transmitting the first wireless signal is related to the set of first spatial reception parameters.
As an embodiment, the above-mentioned first type of communication node device is characterized in that the first type of communication node is a user equipment.
As an embodiment, the above-mentioned first type communication node device is characterized in that the first type 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 transmitter module that transmits K reference signal groups, the K reference signal groups being divided into M reference signal subsets, M spatial transmission parameter groups being used to transmit reference signal groups among the M reference signal subsets, respectively, the M being a positive integer greater than 1, the K being a positive integer not less than the M;
a second transmitter module that transmits a first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals;
a fourth receiver module that monitors the first wireless signal on the target time-frequency resource;
wherein a receiver of the first control signal performs a first type of energy detection using a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; the receiver of the first control signal adopts the result of the first type energy detection to judge whether a first wireless signal can be sent on the target time-frequency resource or not; the receiver of the first control signal transmits a first wireless signal on the target time-frequency resource, or the receiver of the first signal gives up transmitting the first wireless signal on the target time-frequency resource.
As an embodiment, the second type of communication node device is characterized in that L sets of spatial reception parameters are used for receiving L sets of reference signals in the first subset of reference signals, respectively, the first set of spatial reception parameters being one of the L sets of spatial reception parameters, the L being a positive integer greater than 1.
As an embodiment, the second class of communication node device is characterized in that the fourth receiver module performs M classes of energy detection using the M spatial reception parameter sets, respectively, the M spatial reception parameter sets being in one-to-one correspondence with the M spatial transmission parameter sets, and a result of the M classes of energy detection is used to determine the first reference signal subset.
As an embodiment, the above-mentioned second type of communication node device is characterized in that the receiver of the first control signal performs a second type of energy detection using a second set of spatial reception parameters, which is different from the first set of spatial reception parameters; and the receiver of the first control signal adopts the result of the second type energy detection to judge whether the first wireless signal can be sent on the target time-frequency resource.
As an embodiment, the second type of communication node device is characterized in that the second set of spatial reception parameters is one of the L sets of spatial reception parameters, the second set of spatial reception parameters being used for receiving a second set of reference signals comprised in the K sets of reference signals, the second set of reference signals being different from the first set of reference signals.
As an embodiment, the second type of communication node device is characterized in that the first subset of reference signals comprises the second set of reference signals.
As an embodiment, the second type of communication node device is characterized in that the fourth receiver module receives a second control signal, the second control signal being indicative of the second set of reference signals.
As an embodiment, the above-mentioned second class of communication node devices is characterized in that the set of spatial reception parameters used for receiving said first radio signal is related to the set of spatial transmission parameters used for transmitting said second reference signal.
As an embodiment, the above-mentioned second class of communication node devices is characterized in that the set of spatial reception parameters used for receiving said first radio signal is related to the set of spatial transmission parameters used for transmitting said first reference signal set.
As an embodiment, the second type of communication node device 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:
By recommending the direction of the directional LBT by the peer communication device, the efficiency and direction accuracy of the directional LBT are improved, thus improving the system transmission efficiency and timeliness.
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 shows a flow chart of K reference signal groups, a first control signal 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 shows a schematic diagram of K reference signal groups according to one embodiment of the present application;
FIG. 7 illustrates a schematic diagram of class M energy detection 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 receives K reference signal groups, where the K reference signal groups are divided into M reference signal subsets, M spatial transmission parameter groups are respectively used to transmit reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M; receiving a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals; performing a first type of energy detection with a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; judging whether a first wireless signal can be sent on a target time-frequency resource or not by adopting the result of the first type of energy detection; if the first wireless signal can be sent on the target video resource, the first wireless signal is sent on the target time-frequency resource; otherwise, the first wireless signal is abandoned to be sent on the target time-frequency resource.
As an embodiment, the above method is used for channel access over unlicensed spectrum.
As an embodiment, the reference signals in the K reference signal groups are downlink reference signals.
As an embodiment, the reference signals in the K reference signal groups are CSI-RS (Channel State Information Reference Signal, channel state information reference signals).
As an embodiment, one of the reference signal groups comprises one reference signal.
As an embodiment, one of the reference signal groups comprises a plurality of reference signals.
As one embodiment, one of the reference signal groups is a reference signal within one CSI-RS resource (CSI-RS resource)
As an embodiment, one of the reference signal groups corresponds to one CRI (Channel state information reference signal Resource Identity ).
As an embodiment, the reference signal in the K reference signal groups is SS (Sychronization Signal).
As an embodiment, one of the reference signal groups is a reference signal in one SSB (Syncronization Signal Block, synchronization signal block).
As an embodiment, one of the reference signal groups corresponds to a temporal search of one SSB.
As an embodiment, the reference signals in the K reference signal groups are uplink reference signals.
As an embodiment, the reference signal in the K reference signal groups is an SRS (Sounding Reference Signal ).
As an embodiment, one of the reference signal groups is a reference signal within one SRS Resource (SRS Resource).
As an embodiment, one of the reference signal groups corresponds to one SRI (Sounding Reference Signal Resource Identity ).
As an embodiment, the same set of spatial transmission parameters and the same set of spatial reception parameters are used for transmitting and receiving respectively different reference signals within the same one of the K reference signal sets.
As an embodiment, different sets of spatial reception parameters are used for receiving different sets of reference signals comprised by the same one of the M reference signal subsets, respectively.
As an embodiment, one of said sets of spatial transmission parameters comprises parameters of a phase shifter acting on the radio frequency link.
As an embodiment, one of the sets of spatial transmission parameters is used to generate one analog transmission beam.
As an embodiment, one of the sets of spatial transmission parameters comprises parameters used for transmission spatial filtering.
As an embodiment, one of the sets of spatial transmission parameters is used for directional transmission of wireless signals.
As an embodiment, one of the spatial transmission parameter sets corresponds to a multi-antenna transmission scheme.
As an embodiment, one of said sets of spatial reception parameters comprises parameters of a phase shifter acting on the radio frequency link.
As an embodiment, one of the sets of spatial reception parameters is used to generate one analog reception beam.
As an embodiment, one of the sets of spatial reception parameters comprises parameters used for receiving spatial filtering.
As an embodiment, one of the sets of spatial reception parameters is used for directional reception of wireless signals.
As an embodiment, one of the sets of spatial reception parameters corresponds to a multi-antenna reception scheme.
As one embodiment, the K is greater than the M.
As an example, the K may be divided by the M.
As an example, said M is a multiple of 2.
As an example, the K is a multiple of 2.
As an embodiment, a licensed spectrum is used for transmitting the first control signal.
As an embodiment, an omni-directional antenna is used for transmitting the first control signal.
As an embodiment, the first control signal is physical layer control signaling.
As an embodiment, the first control signal is higher layer control signaling.
As an embodiment, the first control signal is RRC (Radio Resource Control ) signaling.
As an embodiment, the first control signal is a downlink control signal.
As an embodiment, the first control signal is DCI (Downlink Control Information).
As an embodiment, the first control signal is a PDCCH (Physical Downlink Control Channel ).
As an embodiment, the first control signal is an uplink control signal.
As an embodiment, the first control signal is a PUCCH (Physical Uplink Control Channel ).
As an embodiment, the first control signal explicitly indicates the first subset of reference signals.
As an embodiment, the first control signal implicitly indicates the first subset of reference signals.
As an embodiment, the first control signal indicates an identity of the first subset of reference signals among the M subsets of reference signals.
As an embodiment, the first control signal indicates a reference signal group in the first reference signal subset.
As an embodiment, the first set of spatial reception parameters is used to generate an analog reception beam performing the first type of energy detection.
As an embodiment, the same analog receive beam is used for receiving the first set of reference signals and performing the first type of energy detection.
As an embodiment, the first set of spatial reception parameters is used for performing a spatial reception scheme of the first type of energy detection.
As an embodiment, the same spatial reception scheme is used for receiving the first set of reference signals and performing the first type of energy detection.
As an embodiment, the first set of spatial reception parameters is used to determine a direction in which the first type of energy detection is performed.
As an embodiment, the same direction is used for receiving the first set of reference signals and performing the first type of energy detection.
As an embodiment, once the energy detection means: the first class of communication nodes monitor received power over a period of time within a given duration.
As an embodiment, once the energy detection means: the first class of communication nodes monitor received energy over a period of time within a given duration.
As an embodiment, once the energy detection means: the first class of communication nodes sensing (sensing) 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 node 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 RSSI (Received Signal Strength Indication ).
For one embodiment, the first type of communication node 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 node is a user equipment and the first radio 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 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 first type of 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 first type of energy detection.
As an embodiment, the starting point 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 the execution of the first type of 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 detected powers obtained by performing the first type of energy detection multiple times respectively using the first spatial reception parameters are used to determine whether the first wireless signal can be transmitted on the target time-frequency resource.
As one embodiment, a target power threshold is used to determine whether to transmit the first wireless signal on the target time-frequency resource.
As an embodiment, the first type of energy detection is performed for a total of L1 times using the first spatial reception parameter set to obtain L1 detection powers, where L1 is a positive integer not less than 1.
As one embodiment, the L1 detected powers are all lower than the target power threshold, and the first type communication node transmits the first wireless signal on the target time-frequency resource.
As an embodiment, at least one of the L1 detected powers is higher than the target power threshold, and the first type of communication node gives up transmitting the first wireless signal on the target time-frequency resource.
As an embodiment, there is a period of time in a time slot, where the detected power obtained by performing the first type of energy detection using the first spatial reception parameter set is lower than the target power threshold, and the time slot is referred to as a first type of idle time slot.
As an embodiment, the time slot is 16 microseconds in length.
As an example, the time slot is 9 microseconds in length.
As an example, the time period is a duration of not less than 4 microseconds.
As an embodiment, the first type of energy detection is performed on consecutive L2 time slots, the L2 being a positive integer not less than 1.
As an embodiment, if all L2 timeslots are idle timeslots of the first class, the first wireless signal is transmitted on the target time-frequency resource.
As an embodiment, if at least one idle slot other than the first type of slot exists in the L2 slots, the first wireless signal is abandoned to be sent on the target time-frequency resource.
As an embodiment, the L2 slots are immediately followed by a time domain resource in the target time-frequency resource.
As one embodiment, the starting point of the time domain resource in the target time-frequency resource is a fixed value in time from the ending point of the L2 time slots
As an embodiment, L sets of spatial reception parameters are used for receiving L sets of reference signals, respectively, of the first subset of reference signals, the first set of spatial reception parameters being one of the L sets of spatial reception parameters, the L being a positive integer greater than 1.
As an embodiment, the first reference signal subset consists of the L reference signal groups.
As an embodiment, the first reference signal group is one of the L reference signal groups.
As an embodiment, L channel qualities are obtained based on the measurements of the L reference signal groups, respectively.
As an embodiment, the channel quality measured based on the first reference signal group is the best channel quality among the L channel qualities.
As an embodiment, the channel quality measured based on the first reference signal group is a better channel quality among the L channel qualities.
As an embodiment, the first reference signal group is any one of the L reference signal groups.
As an embodiment, the transmitters of the K reference signal groups perform M types of energy detection using the M spatial reception parameter groups, respectively, the M spatial reception parameter groups and the M spatial transmission parameter groups are in one-to-one correspondence, and a result of the M types of energy detection is used to determine the first reference signal subset.
As one embodiment, the target spatial reception parameter set is one spatial reception parameter set of the M spatial reception parameter sets, and the target spatial reception parameter set corresponds to a target spatial transmission parameter set of the M spatial transmission parameter sets.
As an embodiment, the parameter values in the target space reception parameter set are the same as the parameter values in the target space transmission parameter set.
As one embodiment, the phase shifter coefficients in the target spatial reception parameter set are the same as the phase shifters in the target spatial transmission parameter set.
As one embodiment, the set of target space receive parameters is used to generate a target analog receive beam and the set of target space transmit parameters is used to generate a target analog transmit beam.
As an embodiment, the coverage angle of the target analog receive beam is the same as the coverage angle of the target analog transmit beam.
As an embodiment, the target analog receive beam and the target analog transmit beam have the same spatial coverage.
As an embodiment, the strongest reception direction of the target analog reception beam is aligned with the strongest transmission direction of the target analog transmission beam.
As an embodiment, the target space reception parameter set and the target space transmission parameter set are QCL (Co-located like) in spatial parameters.
As an embodiment, the target space transmission parameter set may be used to infer the target space reception parameter set.
As an embodiment, the strongest transmission direction generated using the target spatial transmission parameter set may be used to infer the strongest reception direction generated using the target spatial reception parameter set.
As an embodiment, the first type of communication node performs a second type of energy detection using a second set of spatial reception parameters, the second set of spatial reception parameters being different from the first set of spatial reception parameters; and the first type communication node adopts the result of the second type energy detection to judge whether the first wireless signal can be sent on the target time-frequency resource.
As an embodiment, the detected powers obtained by performing the first type of energy detection multiple times respectively using the first spatial reception parameters are used to determine whether the first wireless signal can be transmitted on the target time-frequency resource.
As an embodiment, the second spatial reception parameter set is used to perform the first type of energy detection for a total of L3 times to obtain L3 detection powers, where L3 is a positive integer not less than 1.
As one embodiment, at least one of the L1 detected powers is not lower than the target power threshold, all of the L3 detected powers are lower than the target power threshold, and the first type communication node transmits the first wireless signal on the target time-frequency resource.
As an embodiment, at least one of the L1 detected powers is not lower than the target power threshold, at least one of the L3 detected powers is higher than the target power threshold, and the first type communication node gives up transmitting the first wireless signal on the target time-frequency resource.
As an embodiment, there is a period of time in a time slot, and when the detected power obtained by performing the first type of energy detection with the second spatial reception parameter set during the period of time is lower than the target power threshold, the time slot is referred to as a second type of idle time slot.
As an example, the time period is a duration of not less than 4 microseconds.
As an embodiment, the first type of energy detection is performed on consecutive L4 time slots, the L4 being a positive integer greater than 1.
As an embodiment, at least one idle slot other than the first type of slot exists in the L2 slots, and the L4 slots are all idle slots of the second type, the first wireless signal is sent on the target time-frequency resource.
As an embodiment, at least one idle time slot other than the first type exists in the L2 time slots, and at least one idle time slot other than the second type exists in the L4 time slots, the first wireless signal is abandoned to be sent on the target time-frequency resource.
As an embodiment, the L4 slots are immediately followed by a time domain resource in the target time-frequency resource.
As one embodiment, the starting point of the time domain resource in the target time-frequency resource is a fixed value in time from the ending point of the L4 time slots
As an embodiment, the second spatial reception parameter set is one of the L spatial reception parameter sets, and the second spatial reception parameter set is used to receive a second reference signal set included in the K reference signal sets, the second reference signal set being different from the first reference signal set.
As one embodiment, the second set of spatial reception parameters is different from the first set of spatial reception parameters.
As an embodiment, the direction of the analog receive beam generated with the second set of spatial receive parameters is different from the direction of the analog receive beam generated with the first set of spatial receive parameters.
As an embodiment, the second set of spatial reception parameters includes spatial reception parameters that are different from the spatial reception parameters included in the first set of spatial reception parameters.
As an embodiment, the first reference signal group and the second reference signal group are orthogonal on air interface resources.
As an embodiment, the air interface resource refers to a time domain resource, a frequency domain resource, or a code domain resource.
As an embodiment, the second set of spatial reception parameters includes parameters acting on the phase shifter that are different from parameters acting on the phase shifter that the first set of spatial reception parameters includes.
As an embodiment, the spatial reception filtering generated with the second set of spatial reception parameters is different from the spatial reception filtering generated with the first set of spatial reception parameters.
As an embodiment, the first subset of reference signals comprises the second set of reference signals.
As one embodiment, the L1 is equal to the L3.
As one embodiment, the L2 is equal to the L4.
As an embodiment, the same set of spatial transmission parameters is used for transmitting the first set of reference signals and the second set of reference signals.
As an embodiment, the first type of communication device sequentially uses the first set of spatial reception parameters to perform the first type of energy detection, and uses the second set of spatial reception parameters to perform the second type of energy detection.
As an embodiment, the first type communication node sends a second control signal, the second control signal indicating the second set of reference signals.
As an embodiment, a licensed spectrum is used for transmitting the second control signal.
As an embodiment, an omni-directional antenna is used for transmitting the second control signal.
As an embodiment, the second control signal is a physical layer control signal.
As an embodiment, the second control signal is higher layer signaling.
As an embodiment, the second control signal is RRC signaling.
As an embodiment, the second control signal is an uplink control signal.
As an embodiment, the second control signal is PUCCH.
As an embodiment, the second control signal is a downlink control signal.
As an embodiment, the second control signal is PDCCH
As an embodiment, the set of spatial transmission parameters used for transmitting the first wireless signal is related to the set of second spatial reception parameters.
As an embodiment, a third set of spatial transmission parameters is used for transmitting the spatial transmission parameters of the first wireless signal.
As an embodiment, the parameter values in the second spatial reception parameter set are the same as the parameter values in the third spatial transmission parameter set.
As an embodiment, the phase shifter coefficients in the second set of spatial reception parameters are the same as the phase shifters in the third set of spatial transmission parameters.
As an embodiment, the second set of spatial reception parameters is used to generate a second analog reception beam and the third set of spatial transmission parameters is used to generate a third analog transmission beam.
As an embodiment, the coverage angle of the second analog receive beam is the same as the coverage angle of the third analog transmit beam.
As an embodiment, the second analog receive beam and the third analog transmit beam have the same spatial coverage.
As an embodiment, the strongest reception direction of the second analog reception beam is in line with the strongest transmission direction of the third analog transmission beam.
As an embodiment, the spatial coverage of the third analog transmit beam is within the spatial coverage of the second analog receive beam.
As an embodiment, the coverage angle range of the third analog transmit beam is within the coverage angle range of the second analog receive beam.
As an embodiment, the second set of spatial reception parameters and the third set of spatial transmission parameters are QCL (Co-located like) in spatial parameters.
As an embodiment, the second set of spatial reception parameters may be used to infer the third set of spatial transmission parameters.
As an embodiment, the strongest reception direction generated with the second set of spatial reception parameters may be used to infer the strongest transmission direction generated with the third set of spatial transmission parameters.
As an embodiment, the set of spatial transmission parameters used for transmitting the first wireless signal is related to the set of first spatial reception parameters.
As an embodiment, the parameter values in the first spatial reception parameter set are the same as the parameter values in the third spatial transmission parameter set.
As an embodiment, the phase shifter coefficients in the first set of spatial reception parameters are the same as the phase shifters in the third set of spatial transmission parameters.
As an embodiment, the first set of spatial reception parameters is used to generate a first analog reception beam and the third set of spatial transmission parameters is used to generate a third analog transmission beam.
As an embodiment, the coverage angle of the first analog receive beam is the same as the coverage angle of the third analog transmit beam.
As an embodiment, the spatial coverage of the first analog receive beam is the same as the spatial coverage of the third analog transmit beam.
As an embodiment, the strongest reception direction of the first analog reception beam is in line with the strongest transmission direction of the third analog transmission beam.
As an embodiment, the spatial coverage of the third analog transmit beam is within the spatial coverage of the first analog receive beam.
As an embodiment, the coverage angle range of the third analog transmit beam is within the coverage angle range of the first analog receive beam.
As an embodiment, the first set of spatial reception parameters and the third set of spatial transmission parameters are QCL (Co-located like) in spatial parameters.
As an embodiment, the first set of spatial reception parameters may be used to infer the third set of spatial transmission parameters.
As an embodiment, the strongest reception direction generated with the first set of spatial reception parameters may be used to infer the strongest transmission direction generated with the third set of spatial transmission parameters.
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 NR 5g, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced, enhanced Long-Term Evolution) system network architecture 200. The NR 5G or LTE network architecture 200 may be referred to as EPS (Evolved Packet System ) 200 as some other suitable terminology. EPS 200 may include one or more UEs (User Equipment) 201, ng-RAN (next generation radio access Network) 202, epc (Evolved Packet Core )/5G-CN (5G Core Network) 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 (Packet Date Network Gateway, packet data network Gateway) 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 Protocal, internet protocol) packets are transported through the S-GW212, which S-GW212 itself is connected to P-GW213. The P-GW213 provides UE IP address assignment as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes operator-corresponding internet protocol services, which may include, in particular, the internet, intranets, IMS (IP Multimedia Subsystem ) and PS streaming services (PSs).
As an embodiment, the gNB203 corresponds to a first type of communication node 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 node 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 Link Control, radio link layer control protocol) sublayer 303, and a PDCP (Packet Data Convergence Protocol ) sublayer 304, which terminate at the gNB on the network side. Although not shown, the UE may have several 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 node 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 K reference signal groups in the present application are generated in the PHY301.
As an embodiment, the K reference signal groups in the present application are 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.
As an embodiment, the second control signal is generated in the PHY301.
As an embodiment, the second control signal is generated in the RRC sublayer 306 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.
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 (Uplink Shared Channel );
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 uplink transmissions, which is processed by receive processor 452 for downlink reception, to transmit processor 455;
the transmit processor 455 receives the 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, 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 received signals from receiver 416 and provide MIMO-detected symbols to receive processor 442;
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;
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;
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: receiving K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M; receiving a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals; performing a first type of energy detection with a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; judging whether a first wireless signal can be sent on a target time-frequency resource or not by adopting the result of the first type of energy detection; 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: receiving K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M; receiving a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals; performing a first type of energy detection with a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; judging whether a first wireless signal can be sent on a target time-frequency resource or not by adopting the result of the first type of energy detection; 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: transmitting K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M; transmitting a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals; monitoring a first wireless signal on a target time-frequency resource; wherein a receiver of the first control signal performs a first type of energy detection using a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; the receiver of the first control signal adopts the result of the first type energy detection to judge whether a first wireless signal can be sent on the target time-frequency resource or not; the receiver of the first control signal transmits a first wireless signal on the target time-frequency resource, or the receiver of the first signal gives up transmitting 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: transmitting K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M; transmitting a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals; monitoring a first wireless signal on a target time-frequency resource; wherein a receiver of the first control signal performs a first type of energy detection using a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; the receiver of the first control signal adopts the result of the first type energy detection to judge whether a first wireless signal can be sent on the target time-frequency resource or not; the receiver of the first control signal transmits a first wireless signal on the target time-frequency resource, or the receiver of the first signal gives up transmitting 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: transmitting K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M; transmitting a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals; monitoring a first wireless signal on a target time-frequency resource; wherein a receiver of the first control signal performs a first type of energy detection using a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; the receiver of the first control signal adopts the result of the first type energy detection to judge whether a first wireless signal can be sent on the target time-frequency resource or not; the receiver of the first control signal transmits a first wireless signal on the target time-frequency resource, or the receiver of the first signal gives up transmitting 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: transmitting K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M; transmitting a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals; monitoring a first wireless signal on a target time-frequency resource; wherein a receiver of the first control signal performs a first type of energy detection using a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; the receiver of the first control signal adopts the result of the first type energy detection to judge whether a first wireless signal can be sent on the target time-frequency resource or not; the receiver of the first control signal transmits a first wireless signal on the target time-frequency resource, or the receiver of the first signal gives up transmitting 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: receiving K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M; receiving a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals; performing a first type of energy detection with a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; judging whether a first wireless signal can be sent on a target time-frequency resource or not by adopting the result of the first type of energy detection; 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: receiving K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M; receiving a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals; performing a first type of energy detection with a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; judging whether a first wireless signal can be sent on a target time-frequency resource or not by adopting the result of the first type of energy detection; 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 one embodiment, UE450 corresponds to a first type of communication node in the present application.
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 an embodiment, the receiver 416, the mimo detector 442 and the receive processor 412 are configured to receive the K reference signal sets.
As one example, at least the first three of receiver 416, mimo detector 442, receive processor 412, and controller/processor 440 are configured to receive the first control signal in the present application.
As one example, receiver 416, mimo detector 442, and receive processor 412 are used to perform the first type of energy detection in this application.
For one embodiment, the receive processor 412 is used to determine whether the first wireless signal of the present application 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 416, mimo detector 442, and receive processor 412 are used to perform the second type of energy detection in this application.
As one example, at least the first three of receiver 416, mimo detector 442, receive processor 412, and controller/processor 440 are used to transmit the second control signal in this application.
As one example, transmit processor 455, mimo transmit processor 471 and transmitter 456 are used to transmit K reference signal sets 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 monitor the first wireless signal in the present application on a target time-frequency resource.
As one example, receiver 456, mimo detector 472, and receive processor 452 are used to perform the class M energy detection described herein on target time-frequency resources.
As one example, at least the first three of receiver 456, mimo detector 472, receive processor 452 and controller/processor 490 are used to receive the second control signal in the present application.
As an embodiment, the receiver 456, the mimo detector 472 and the receive processor 452 are configured to receive the K reference signal groups.
As one example, at least the first three of receiver 456, mimo detector 472, receive processor 452 and controller/processor 440 are configured to receive the first control signal in the present application.
As one example, receiver 456, mimo detector 472, and receive processor 452 are used to perform the first type of energy detection in this application.
As one example, the receive processor 452 is configured to determine whether the first wireless signal of the present application 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 example, receiver 456, mimo detector 472, and receive processor 452 are used to perform the second type of energy detection in this application.
As one example, at least the first three of receiver 456, mimo detector 472, receive processor 452 and controller/processor 440 are used to transmit the second control signal in the present application.
As one example, a transmit processor 415, a mimo transmit processor 441, and a transmitter 416 are used to transmit K reference signal sets 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.
As one example, at least the first three of receiver 416, mimo detector 442, receive processor 412, and controller/processor 440 are used to monitor the first wireless signal of the present application on the target time-frequency resource.
As one embodiment, receiver 416, mimo detector 442, and receive processor 412 are used to perform the class M energy detection described herein on the target time-frequency resources.
As one example, at least the first three of receiver 416, mimo detector 442, and receive processor 412 and controller/processor 440 are used to receive the second 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 blocks F1, F2 and F3 in the figure are optional, and the steps identified in block F3 may not be performed.
For the followingFirst class communication node C1K reference signal groups are received in step S11, a first control signal is received in step S12, a first type of energy detection is performed in step S13, a second type of energy detection is performed in step S14, it is determined in step S15 whether or not the first radio signal can be transmitted on the target time-frequency resource, the second control signal is transmitted in step S16, and the first radio signal is transmitted on the target time-frequency resource in step S17.
For the followingSecond class communication node C2K reference signal groups are transmitted in step S21, K-class energy detection is performed in step S22, a first control signal is transmitted in step S23,the second control signal is received in step S24 and the first radio signal is monitored on the target time-frequency resource in step S25.
In embodiment 5, the K reference signal groups are divided into M reference signal subsets, M spatial transmission parameter groups are used to transmit reference signal groups in the M reference signal subsets, respectively, M is a positive integer greater than 1, and K is a positive integer not less than M; the first control signal indicates a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals; c1 performing a first type of energy detection using a first set of spatial reception parameters, the first set of spatial reception parameters being used by C1 to receive a first set of reference signals comprised by the first subset of reference signals; c1, judging whether a first wireless signal can be sent on a target time-frequency resource or not by adopting the result of the first type energy detection; if the first wireless signal can be sent on the target time-frequency resource is judged, the step in F4 exists, and C1 sends the first wireless signal on the target time-frequency resource; if C1 judges that the first wireless signal can not be sent on the target time-frequency resource, the step in F4 does not exist, and C1 gives up to send the first wireless signal on the target time-frequency resource; c2 monitors the first wireless signal on a 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, L sets of spatial reception parameters are used by C1 for receiving L sets of reference signals in the first subset of reference signals, respectively, the first set of spatial reception parameters being one of the L sets of spatial reception parameters, the L being a positive integer greater than 1.
As an embodiment, C2 performs M types of energy detection using the M spatial reception parameter sets, respectively, where the M spatial reception parameter sets are in one-to-one correspondence with the M spatial transmission parameter sets, and a result of the M types of energy detection is used to determine the first reference signal subset.
As an embodiment, the steps in block F2 exist, C1 performing a second type of energy detection with a second set of spatial reception parameters, said second set of spatial reception parameters being different from said first set of spatial reception parameters; and C1, judging whether the first wireless signal can be sent on the target time-frequency resource or not by adopting the result of the second type energy detection.
As an embodiment, the second spatial reception parameter set is one of the L spatial reception parameter sets, and the second spatial reception parameter set is used to receive a second reference signal set included in the K reference signal sets, the second reference signal set being different from the first reference signal set.
As an embodiment, the first subset of reference signals comprises the second set of reference signals.
As an embodiment, the step in block F3 is present, said second control signal being indicative of said second set of reference signals.
As an embodiment, the set of spatial transmission parameters used for transmitting the first wireless signal is related to the set of second spatial reception parameters.
As an embodiment, the set of spatial transmission parameters used for transmitting the first wireless signal is related to the set of first spatial reception parameters.
As an embodiment, C1 is a user equipment and C2 is a base station.
As an embodiment, C1 is a base station and C2 is a user equipment.
Example 6
Example 6 illustrates K reference signal groups in the present application, as shown in fig. 6.
In embodiment 6, a second type of communication node in the present application transmits K reference signal groups in the present application. The K reference signal groups are divided into M reference signal subsets, that is, reference signal subsets #1- #m, and M spatial transmission parameter groups are used by the second type communication node to transmit the reference signal groups in the M reference signal subsets, respectively, where M is a positive integer greater than 1, and K is a positive integer not less than M. The M sets of spatial transmission parameters are used to generate the second type of transmission beams #1 to #m in fig. 6, respectively. A first type of communication node in the present application receives the K reference signal groups. A first type of communication node in the present application receives the K reference signal groups. The L sets of spatial reception parameters in this application are used to generate the first type of reception beams #1 to #l in fig. 6, respectively, where L is a positive integer greater than 1. The L reference signal groups constitute one of the M reference signal subsets. The first type of reception beams #1 to #l are used to receive L reference signal groups in one reference signal subset, respectively.
As an embodiment, the reference signal groups #1- #k are transmitted sequentially in time.
As an embodiment, the reference signals in the K reference signal groups are CSI-RS.
As an embodiment, the time-frequency resource of one of the K reference signal groups is used to determine which of the M reference signal subsets the reference signal group belongs to.
As an embodiment, the first set of spatial reception parameters in the present application is one of the first type of reception beams #1 to #l.
As an embodiment, the second set of spatial reception parameters in the present application is one of the first type reception beams #1 to #l.
As an embodiment, the first reference signal subset in the present application is one of the M first reference signal subsets.
As an embodiment, the first set of spatial reception parameters is used for receiving a first set of reference signals and the second set of spatial reception parameters is used for receiving a second set of reference signals, both the first set of reference signals and the second set of reference signals belonging to the first subset of reference signals.
Example 7
Example 7 illustrates class M energy detection in the present application, as shown in fig. 7.
In embodiment 7, the M sets of spatial transmission parameters in the present application are used to generate the second type of transmission beams #1 to #m in fig. 7, respectively, and the second type of transmission beams #1 to #m are used to transmit the reference signal sets in the reference signal subsets #1 to #m, respectively. The second type of reception beams #1- #m are used to receive wireless signals in the energy detection #1- #m, respectively. The energy detection #1- #M is M-class energy detection in the application. The M sets of spatial reception parameters are used to generate the second class of reception beams #1- #m, respectively. The second type of transmission beams #1 to #m are in one-to-one correspondence with the second type of reception beams #1 to #m. The M space receiving parameter sets are in one-to-one correspondence with the M space sending parameter sets.
As an embodiment, the target spatial reception parameter set is one spatial reception parameter set of the M spatial reception parameter sets, and the target spatial reception parameter set is a corresponding target spatial transmission parameter set of the M spatial transmission parameter sets.
As an embodiment, the parameter values in the target space reception parameter set are the same as the parameter values in the target space transmission parameter set.
As one embodiment, the phase shifter coefficients in the target spatial reception parameter set are the same as the phase shifters in the target spatial transmission parameter set.
As one embodiment, the set of target space receive parameters is used to generate a target analog receive beam and the set of target space transmit parameters is used to generate a target analog transmit beam.
As an embodiment, the coverage angle of the target analog receive beam is the same as the coverage angle of the target analog transmit beam.
As an embodiment, the target analog receive beam and the target analog transmit beam have the same spatial coverage.
As an embodiment, the strongest reception direction of the target analog reception beam is aligned with the strongest transmission direction of the target analog transmission beam.
As an embodiment, the target space reception parameter set and the target space transmission parameter set are QCL (Co-located like) in spatial parameters.
As an embodiment, the target space transmission parameter set may be used to infer the target space reception parameter set.
As an embodiment, the strongest transmission direction generated using the target spatial transmission parameter set may be used to infer the strongest reception direction generated using the target spatial reception parameter set.
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 node is equipped with M radio frequency chains, namely radio frequency chain #1, radio frequency chains #2, …, and radio frequency 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, 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 (Quasi Co-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 node 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 communication node on each of the parallel sub-bands 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 second receiver module 902, a third receiver module 903, a first processor module 904, and a fourth transmitter module 905.
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 second receiver module 902 includes at least the first three of the receiver 416, the mimo detector 442, the receive processor 412, and the controller/processor 440 in embodiment 4.
As an embodiment, the third receiver module 903 includes the receiver 416, the mimo detector 442, and the receive processor 412 in embodiment 4.
As an embodiment, the first processor module 904 includes the receive processor 412 of embodiment 4.
As an embodiment, the fourth transmitter module 905 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 example, the second receiver module 902 includes at least one of the receiver 456, the mimo detector 472, the receive processor 452, and the controller/processor 490 of example 4.
As an embodiment, the third receiver module 903 includes the receiver 456, the mimo detector 472, and the receive processor 452 in embodiment 4.
As an example, the first processor module 904 includes the receive processor 4552 of example 4.
As an example, the fourth transmitter module 905 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 reference signal groups are received, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M.
-a second receiver module 902: a first control signal is received, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals.
-a third receiver module 903: a first type of energy detection is performed using a first set of spatial reception parameters that are used to receive a first set of reference signals comprised by the first subset of reference signals.
-a first processor module 904: and judging whether the first wireless signal can be sent on the target time-frequency resource or not by adopting the result of the first type of energy detection.
Fourth transmitter module 905: 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, L sets of spatial reception parameters are used for receiving L sets of reference signals, respectively, of the first subset of reference signals, the first set of spatial reception parameters being one of the L sets of spatial reception parameters, the L being a positive integer greater than 1.
As an embodiment, the transmitters of the K reference signal groups perform M types of energy detection using the M spatial reception parameter groups, respectively, the M spatial reception parameter groups and the M spatial transmission parameter groups are in one-to-one correspondence, and a result of the M types of energy detection is used to determine the first reference signal subset.
As an embodiment, the third receiver module 903 performs a second type of energy detection using a second set of spatial reception parameters, the second set of spatial reception parameters being different from the first set of spatial reception parameters; the first processor module 904 uses the result of the second type of energy detection to determine whether the first wireless signal can be sent on the target time-frequency resource.
As an embodiment, the second spatial reception parameter set is one of the L spatial reception parameter sets, and the second spatial reception parameter set is used to receive a second reference signal set included in the K reference signal sets, the second reference signal set being different from the first reference signal set.
As an embodiment, the first subset of reference signals comprises the second set of reference signals.
As an embodiment, the fourth transmitter module 905 transmits a second control signal, which indicates the second reference signal group.
As an embodiment, the set of spatial transmission parameters used for transmitting the first wireless signal is related to the set of second spatial reception parameters.
As an embodiment, the set of spatial transmission parameters used for transmitting the first wireless signal is related to the set of first spatial reception parameters.
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 class of communication node processing means 1000 mainly consists of a first transmitter module 1001, a second transmitter module 1002, and a fourth receiver module 1003.
As an embodiment, the first transmitter module 1001 includes a transmit processor 455, a mimo transmit processor 471 and a transmitter 456 are used to transmit K reference signal sets in the present application.
As one example, the second transmitter module 1002 includes at least three of a transmit processor 455, a mimo transmit processor 471, a transmitter 456, and a controller/processor 490.
As an embodiment, the fourth receiver module 1003 includes a receiver 456, a mimo detector 472, and a receive processor 452.
As an embodiment, the first transmitter module 1001 includes a transmit processor 415, a mimo transmit processor 441, and a transmitter 416.
As an embodiment, the second transmitter module 1002 includes at least three of a transmit processor 415, a mimo transmit processor 441, and a transmitter 416, and a controller/processor 440.
As an embodiment, the fourth receiver module 1003 includes at least three of a receiver 416, a mimo detector 442, and a receive processor 412 and a controller/processor 440.
-a first transmitter module 1001: transmitting K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M;
-a second transmitter module 1002: transmitting a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals;
-a fourth receiver module 1003: the first wireless signal is monitored on a target time-frequency resource.
In embodiment 4, the receiver of the first control signal performs a first type of energy detection using a first set of spatial reception parameters, which are used to receive a first set of reference signals comprised by the first subset of reference signals; the receiver of the first control signal adopts the result of the first type energy detection to judge whether a first wireless signal can be sent on the target time-frequency resource or not; the receiver of the first control signal transmits a first wireless signal on the target time-frequency resource, or the receiver of the first signal gives up transmitting the first wireless signal on the target time-frequency resource.
As an embodiment, L sets of spatial reception parameters are used for receiving L sets of reference signals, respectively, of the first subset of reference signals, the first set of spatial reception parameters being one of the L sets of spatial reception parameters, the L being a positive integer greater than 1.
As an embodiment, the fourth receiver module 1003 performs M types of energy detection using the M spatial reception parameter sets, respectively, where the M spatial reception parameter sets are in one-to-one correspondence with the M spatial transmission parameter sets, and a result of the M types of energy detection is used to determine the first reference signal subset.
As an embodiment, the receiver of the first control signal performs a second type of energy detection using a second set of spatial reception parameters, the second set of spatial reception parameters being different from the first set of spatial reception parameters; and the receiver of the first control signal adopts the result of the second type energy detection to judge whether the first wireless signal can be sent on the target time-frequency resource.
As an embodiment, the second spatial reception parameter set is one of the L spatial reception parameter sets, and the second spatial reception parameter set is used to receive a second reference signal set included in the K reference signal sets, the second reference signal set being different from the first reference signal set.
As an embodiment, the first subset of reference signals comprises the second set of reference signals.
As an embodiment, the fourth receiver module 1003 receives a second control signal, the second control signal indicating the second reference signal group.
As an embodiment, the set of spatial reception parameters used for receiving the first radio signal relates to the set of spatial transmission parameters used for transmitting the second reference signal set.
As an embodiment, the set of spatial reception parameters used for receiving the first wireless signal relates to a set of spatial transmission parameters used for transmitting the first set of reference signals.
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 (10)

1. A method in a first type of communication node for channel access over unlicensed spectrum in wireless communications, comprising:
receiving K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M;
receiving a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals;
performing a first type of energy detection with a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals;
judging whether a first wireless signal can be sent on a target time-frequency resource or not by adopting the detection power obtained by the first type of energy detection;
Transmitting a first wireless signal on a target time-frequency resource, or discarding the transmission of the first wireless signal on the target time-frequency resource; a set of spatial transmission parameters used to transmit the first wireless signal is associated with the first set of spatial reception parameters;
the first type of communication node is user equipment, the reference signals in the K reference signal groups are downlink reference signals, and the first wireless signals are uplink signals; or, the first type of communication node is a base station, the reference signals in the K reference signal groups are SRS (sounding reference signals), and the first radio signal is a downlink signal.
2. The method of claim 1, wherein L sets of spatial reception parameters are used for receiving L sets of reference signals, respectively, of the first subset of reference signals, the first set of spatial reception parameters being one of the L sets of spatial reception parameters, the L being a positive integer greater than 1.
3. The method according to claim 1 or 2, wherein the transmitters of the K reference signal groups perform M types of energy detection using M spatial reception parameter sets, respectively, the M spatial reception parameter sets being in one-to-one correspondence with the M spatial transmission parameter sets, and the results of the M types of energy detection being used to determine the first reference signal subset.
4. A method according to any one of claims 1 to 3, comprising:
performing a second type of energy detection with a second set of spatial reception parameters, the second set of spatial reception parameters being different from the first set of spatial reception parameters;
and judging whether the first wireless signal can be sent on the target time-frequency resource or not by adopting the result of the second type energy detection.
5. The method according to any of claims 1 to 4, wherein the time domain resources of the target time-frequency resources are after performing the time domain resources occupied by the first type of energy detection.
6. The method according to any of claims 1 to 5, wherein a third set of spatial transmission parameters is used for transmitting the first wireless signal, the parameter values in the first set of spatial reception parameters being the same as the parameter values in the third set of spatial transmission parameters.
7. The method according to any of claims 1 to 6, wherein the first set of spatial reception parameters is used for generating a first analog reception beam and the third set of spatial transmission parameters is used for generating a third analog transmission beam; the spatial coverage of the third analog transmit beam is within the spatial coverage of the first analog receive beam or the coverage angle range of the third analog transmit beam is within the coverage angle range of the first analog receive beam.
8. A method in a second class of communication nodes for channel access over unlicensed spectrum in wireless communications, comprising:
transmitting K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M space transmission parameter groups are respectively used for transmitting the reference signal groups in the M reference signal subsets, M is a positive integer greater than 1, and K is a positive integer not less than M;
transmitting a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals;
monitoring a first wireless signal on a target time-frequency resource;
wherein a receiver of the first control signal performs a first type of energy detection using a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; the receiver of the first control signal adopts the detection power obtained by the first type of energy detection to judge whether a first wireless signal can be sent on the target time-frequency resource or not; the receiver of the first control signal transmits a first wireless signal on the target time-frequency resource, or the receiver of the first control signal gives up transmitting the first wireless signal on the target time-frequency resource; a set of spatial transmission parameters used to transmit the first wireless signal is associated with the first set of spatial reception parameters;
The second type communication node is a base station, the reference signals in the K reference signal groups are downlink reference signals, and the first wireless signals are uplink signals; or the second type of communication node is a user equipment, the reference signal in the K reference signal groups is an SRS (sounding reference signal), and the first radio signal is a downlink signal.
9. A first type of communication node device for channel access over unlicensed spectrum in wireless communications, comprising:
a first receiver module that receives K reference signal groups, the K reference signal groups being divided into M reference signal subsets, M spatial transmission parameter groups being used to transmit reference signal groups among the M reference signal subsets, respectively, the M being a positive integer greater than 1, the K being a positive integer not less than the M;
a second receiver module that receives a first control signal, the first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals;
a third receiver module that performs a first type of energy detection using a first set of spatial reception parameters that are used to receive a first set of reference signals comprised by the first subset of reference signals;
The first processor module is used for judging whether a first wireless signal can be sent on a target time-frequency resource or not by adopting the detection power obtained by the first type of energy detection;
a fourth transmitter module that transmits the first wireless signal on the target time-frequency resource, or that discards transmitting the first wireless signal on the target time-frequency resource; a set of spatial transmission parameters used to transmit the first wireless signal is associated with the first set of spatial reception parameters;
the first type of communication node is user equipment, the reference signals in the K reference signal groups are downlink reference signals, and the first wireless signals are uplink signals; or, the first type of communication node is a base station, the reference signals in the K reference signal groups are SRS (sounding reference signals), and the first radio signal is a downlink signal.
10. A second class of communication node devices for channel access over unlicensed spectrum in wireless communications, comprising:
a first transmitter module that transmits K reference signal groups, the K reference signal groups being divided into M reference signal subsets, M spatial transmission parameter groups being used to transmit reference signal groups among the M reference signal subsets, respectively, the M being a positive integer greater than 1, the K being a positive integer not less than the M;
A second transmitter module that transmits a first control signal indicating a first subset of reference signals, the first subset of reference signals being one of the M subsets of reference signals;
a fourth receiver module that monitors the first wireless signal on the target time-frequency resource;
wherein a receiver of the first control signal performs a first type of energy detection using a first set of spatial reception parameters, the first set of spatial reception parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; the receiver of the first control signal adopts the detection power obtained by the first type of energy detection to judge whether a first wireless signal can be sent on the target time-frequency resource or not; the receiver of the first control signal transmits a first wireless signal on the target time-frequency resource, or the receiver of the first control signal gives up transmitting the first wireless signal on the target time-frequency resource; a set of spatial transmission parameters used to transmit the first wireless signal is associated with the first set of spatial reception parameters;
the second type communication node is a base station, the reference signals in the K reference signal groups are downlink reference signals, and the first wireless signals are uplink signals; or the second type of communication node is a user equipment, the reference signal in the K reference signal groups is an SRS (sounding reference signal), and the first radio signal is a downlink signal.
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