CN110049558B - Method and device in communication node for wireless communication - Google Patents

Method and device in communication node for wireless communication Download PDF

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Publication number
CN110049558B
CN110049558B CN201810045728.4A CN201810045728A CN110049558B CN 110049558 B CN110049558 B CN 110049558B CN 201810045728 A CN201810045728 A CN 201810045728A CN 110049558 B CN110049558 B CN 110049558B
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spatial
parameters
type
reference signals
signal
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CN110049558A (en
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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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Priority to CN201810045728.4A priority Critical patent/CN110049558B/en
Priority to CN202310021460.1A priority patent/CN116017724A/en
Priority to CN202310043386.3A priority patent/CN116056233A/en
Publication of CN110049558A publication Critical patent/CN110049558A/en
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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 arrangement in a communication node for wireless communication is disclosed. The communication node sequentially receives K reference signal groups, receives a first control signal, performs first-class 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 a result of the first-class energy detection, and sends the first wireless signal on the target time-frequency resource, or abandons 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. The method and the device improve the efficiency and the direction accuracy of the directional LBT by recommending the direction of the directional LBT by the opposite-end communication equipment, thereby improving the transmission efficiency and the timeliness of the system.

Description

Method and device in communication node for wireless communication
Technical Field
The present application relates to a transmission scheme of wireless signals in a wireless communication system, and more particularly, to a method and apparatus for multi-antenna transmission and unlicensed spectrum.
Background
In a conventional 3GPP (3 rd generation partner Project) LTE (Long-term Evolution) system, data transmission can only occur on a 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. Communication over unlicensed spectrum in Release 13 and Release 14 was introduced by the cellular system and used for transmission of downlink and uplink data. To ensure compatibility with other Access technologies over unlicensed spectrum, LBT (Listen Before Talk) technology is adopted by LAA (Licensed Assisted Access) to avoid interference due to multiple transmitters simultaneously occupying the same frequency resources. A 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 underway, wherein Massive MIMO (Multi-Input Multi-Output) becomes a research hotspot of next-generation mobile communication. In massive MIMO, multiple antennas form a beam pointing to a specific spatial direction through Beamforming (Beamforming) to improve communication quality, and when considering coverage characteristics caused by Beamforming, conventional LAA techniques need to be reconsidered, such as LBT scheme.
Disclosure of Invention
The inventor finds, through research, that beamforming in a 5G system will be used on a large scale, and how to improve 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, the embodiments and features in the embodiments in the UE (User Equipment) of the present application may be applied to the base station, and vice versa. Further, the embodiments and features of the embodiments of the present application 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 spatial 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 using a first set of spatial receive parameters, the first set of spatial receive 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 sending the first wireless signal on the target time frequency resource, or abandoning sending 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 example, it is common knowledge that for a wireless transmission over an unlicensed spectrum, the transmitter of a wireless signal performs LBT itself, and the receiver of the wireless signal does not make a recommendation regarding the LBT direction.
As an example, one benefit of the above approach is that: the opposite-end communication device communicating with the first-class communication node can recommend the first-class communication node to carry out LBT in a specific direction, so that the LBT efficiency is improved.
As an example, another benefit of the above method is: the first type of communication node is user equipment, and the base station equipment can assist the user equipment in performing directional LBT by using the advantages of the number of antennas, the number of antenna panels, the receiving sensitivity, better hardware configuration, superior positions and the like, so that the LBT efficiency is improved.
According to an aspect of the application, the above method is characterized in that L sets of spatial reception parameters are used for receiving L sets of reference signals, respectively, in the first subset of reference signals, the first set of spatial reception parameters being one of the L sets of spatial reception parameters, L being a positive integer larger than 1.
As an example, one benefit of the above approach is that: aiming at the reference signal subset recommended by the opposite-end communication node, the best space receiving parameter group is selected from the plurality of space receiving parameter groups, so that the LBT direction of the first-class communication node is close to the direction recommended by the opposite-end communication node, and the LBT efficiency is improved.
According to an aspect of the present application, the method is characterized in that the sender of the K reference signal groups respectively performs M-class energy detection by using the M spatial receiving parameter groups, the M spatial receiving parameter groups and the M spatial transmitting parameter groups are in one-to-one correspondence, and the result of the M-class energy detection is used to determine the first reference signal subset.
As an example, one benefit of the above approach is that: the opposite communication node of the first type communication node assists the first type communication through energy detection
According to an aspect of the application, the above method is characterized by comprising
Performing a second type of energy detection using a second set of spatial receive parameters, the second set of spatial receive parameters being different from the first set of spatial receive 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 of energy detection.
As an example, one benefit of the above approach is that: and a plurality of groups of spatial receiving parameter groups are used for energy detection, so that the accuracy of directional LBT is improved.
According to an aspect of the application, the above method 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 group included in the K reference signal groups, the second reference signal group being different from the first reference signal group.
As an example, one benefit of the above approach is that: and defining the self-selected LBT direction of the first-class communication node, and facilitating system management and reporting.
According to an aspect of the application, the method is characterized in that the first subset of reference signals comprises the second set of reference signals.
As an example, one benefit of the above approach is that: and performing beam scanning on the receiving direction of the opposite-end communication node recommended by the opposite-end communication node to find the optimal LBT direction of the first-class communication node.
According to one aspect of the application, the above method is characterized by transmitting a second control signal indicating the second set of reference signals.
As an example, one benefit of the above approach is that: the first type communication node indicates the LBT direction of the first type communication node, and an opposite end communication node is convenient for receiving wireless signals sent by the first type communication node.
According to an aspect of the 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 example, one benefit of the above approach is that: the wireless signal after the directional LBT is sent in the direction of the directional LBT, and the interference to the ongoing communication in other directions is avoided.
According to an aspect of the 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 first set of spatial reception parameters.
As an example, one benefit of the above approach is that: the wireless signal after the directional LBT is sent in the direction of the directional LBT, and the interference to the ongoing communication in other directions is avoided.
According to an aspect of the application, the above method is characterized in that the first type communication node is a user equipment or the first type communication node is a base station.
The application discloses a method in a second type of communication node used for wireless communication, characterized by comprising:
transmitting K reference signal groups, the K reference signal groups being divided into M reference signal subsets, M spatial transmission parameter groups being respectively used for transmitting reference signal groups in the M reference signal subsets, M being a positive integer greater than 1, and K being 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 receive parameters, the first set of spatial receive 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 of energy detection to judge whether a first wireless signal can be sent on the target time frequency resource; and the receiver of the first control signal sends a first wireless signal on the target time frequency resource, or the receiver of the first signal gives up sending the first wireless signal on the target time frequency resource.
According to an aspect of the application, the method is characterized in that L sets of spatial reception parameters are used for receiving L sets of reference signals respectively in the first subset of reference signals, the first set of spatial reception parameters being one of the L sets of spatial reception parameters, L being a positive integer greater than 1.
According to an aspect of the present application, the method is characterized in that the second type communication node performs M types of energy detection respectively using the M spatial receiving parameter sets, the M spatial receiving parameter sets and the M spatial transmitting parameter sets 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.
According to one 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 of energy detection to judge whether the first wireless signal can be sent on the target time-frequency resource.
According to an aspect of the application, the above method 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 group included in the K reference signal groups, the second reference signal group being different from the first reference signal group.
According to an aspect of the application, the method is characterized in that the first subset of reference signals comprises the second set of reference signals.
According to one aspect of the present application, the method described above is characterized by including receiving a second control signal, the second control signal indicating the second set of reference signals.
According to an aspect of the 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 set of reference signals.
According to an aspect of the application, the above method is characterized in that 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 first set of reference signals.
According to an aspect of the application, the above method is characterized in that the second type communication node is a base station or the second type communication node is a user equipment.
The application discloses a first type of communication node device used for wireless communication, characterized by comprising:
a first receiver module, configured to receive K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, and M spatial transmission parameter groups are respectively used for transmitting reference signal groups in the M reference signal subsets, where M is a positive integer greater than 1, and K is a positive integer not less than M;
a second receiver module to receive 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 configured to perform a first type of energy detection using a first set of spatial receive parameters, the first set of spatial receive parameters being used to receive a first set of reference signals included in 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 result of the first type of energy detection;
and the fourth transmitter module is used for transmitting the first wireless signal on the target time-frequency resource or abandoning 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 spatial reception parameter sets are respectively used for receiving L reference signal groups in the first reference signal subset, the first spatial reception parameter set is one of the L spatial reception parameter sets, and L is a positive integer greater than 1.
As an embodiment, the first type of communication node device is characterized in that the sender of the K reference signal groups respectively performs M types of energy detection by using the M spatial receiving parameter groups, the M spatial receiving parameter groups and the M spatial transmitting parameter groups are in one-to-one correspondence, and the result of the M types of energy detection is used to determine the first reference signal subset.
As an embodiment, the first type of communication node device is characterized in that the third receiver module performs a second type of energy detection by using a second set of spatial receiving parameters, where the second set of spatial receiving parameters is different from the first set of spatial receiving parameters; and the first processor module adopts the result of the second type of energy detection to judge whether the first wireless signal can be sent on the target time frequency resource.
As an embodiment, the above-mentioned first type of communication node device is characterized in that the second spatial reception parameter group is one of the L spatial reception parameter groups, the second spatial reception parameter group being used for receiving a second reference signal group included in the K reference signal groups, the second reference signal group being different from the first reference signal group.
As an embodiment, the above-mentioned 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 above-mentioned first type of communication node device is characterized in that the fourth transmitter module transmits a second control signal indicating the second reference signal group.
As an embodiment, the first type of communication node apparatus is characterized in that the spatial transmission parameter set used for transmitting the first wireless signal is related to the second spatial reception parameter set.
As an embodiment, the first type of communication node apparatus is characterized in that the spatial transmission parameter set used for transmitting the first wireless signal is related to the first spatial reception parameter set.
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 type communication node device used for wireless communication, characterized by comprising:
a first transmitter module, configured to transmit K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M spatial transmission parameter groups are respectively used for transmitting 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 to transmit 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 that monitors the 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 receive parameters, the first set of spatial receive 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 of energy detection to judge whether a first wireless signal can be sent on the target time frequency resource; and the receiver of the first control signal sends a first wireless signal on the target time-frequency resource, or the receiver of the first signal abandons sending the first wireless signal on the target time-frequency resource.
As an embodiment, the above-mentioned second type of communication node device is characterized in that L spatial reception parameter groups are respectively used for receiving L reference signal groups in the first reference signal subset, the first spatial reception parameter group is one of the L spatial reception parameter groups, and L is a positive integer greater than 1.
As an embodiment, the second type of communication node device is characterized in that the fourth receiver module performs M types of energy detection respectively by using the M spatial receiving parameter groups, the M spatial receiving parameter groups and the M spatial transmitting parameter groups have 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 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 of 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 spatial receiving parameter group is one of the L spatial receiving parameter groups, the second spatial receiving parameter group being used for receiving a second reference signal group included in the K reference signal groups, the second reference signal group being different from the first reference signal group.
As an embodiment, the above 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 above second type of communication node device is characterized in that the fourth receiver module receives a second control signal, the second control signal indicating the second reference signal group.
As an embodiment, the above-mentioned second type of communication node device is characterized in that the set of spatial reception parameters used for receiving the first wireless signal is related to the set of spatial transmission parameters used for transmitting the second set of reference signals.
As an embodiment, the second type of communication node device 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 group.
As an embodiment, the above second kind of communication node device is characterized in that the second kind of communication node is a base station, or the second kind of communication node is a user equipment.
As an example, compared with the prior art, the present application has the following main technical advantages:
by recommending the direction of the directional LBT by the opposite-end communication equipment, the efficiency and the direction accuracy of the directional LBT are improved, and therefore the transmission efficiency and the timeliness of the system are improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof with reference to the accompanying drawings in which:
FIG. 1 shows a flow diagram of K reference signal groups, a first control signal and a first wireless signal according to one embodiment of the application;
FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;
figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;
figure 4 shows a schematic diagram of an evolved node and a UE according to an embodiment of the present application;
fig. 5 shows a flow diagram of a wireless transmission according to an embodiment of the application;
FIG. 6 shows a schematic diagram of K reference signal groups according to one embodiment of the present application;
FIG. 7 shows a schematic diagram of class M energy detection according to an 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 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 device for use in a communication node of the second type according to an embodiment of the application.
Detailed Description
The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.
Example 1
Embodiment 1 illustrates a flow chart of class K energy detection and 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-class 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 for transmitting reference signal groups in the M reference signal subsets, where 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 using a first set of spatial receive parameters, the first set of spatial receive 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; and otherwise, giving up sending 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, 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 signals).
In one embodiment, one of the reference signal groups includes one reference signal.
For one embodiment, one of the reference signal groups includes a plurality of reference signals.
As one embodiment, one of the reference signal groups is a reference signal in 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 example, the reference signals in the K reference Signal groups are SS (synchronization Signal).
As an embodiment, one of the reference Signal groups is a reference Signal in an SSB (synchronization Signal Block).
As an example, one said set of reference signals corresponds to a temporal retrieval of one SSB.
As an embodiment, the reference signals in the K reference signal groups are uplink reference signals.
As an embodiment, the Reference signals in the K Reference Signal groups are SRS (Sounding Reference Signal).
As an embodiment, one of the reference signal groups is a reference signal in 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 spatial transmit parameter set and the same spatial receive parameter set are used for transmitting and receiving different reference signals in the same reference signal group of the K reference signal groups, respectively.
In one embodiment, different sets of spatial receiving parameters are respectively used for receiving different sets of reference signals included in the same reference signal subset of the M reference signal subsets.
For one embodiment, one of the sets of spatial transmit parameters includes parameters for a phase shifter acting on the radio frequency link.
As an embodiment, one of the sets of spatial transmit parameters is used to generate one analog transmit beam.
As an embodiment, one of the sets of spatial transmit parameters includes parameters used for transmit spatial filtering.
As an embodiment, one of the sets of spatial transmission parameters is used for directionally transmitting a wireless signal.
As an embodiment, one of the spatial transmission parameter sets corresponds to one multi-antenna transmission scheme.
For one embodiment, one of the sets of spatial receive parameters includes parameters of a phase shifter acting on the radio frequency link.
As an embodiment, one of the sets of spatial receive parameters is used to generate one analog receive beam.
As an embodiment, one of said sets of spatial reception parameters comprises parameters used for reception spatial filtering.
For one 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 one multi-antenna reception scheme.
As one embodiment, K is greater than M.
As an example, K may be evenly divided by M.
As an example, M is a multiple of 2.
As an example, K is a multiple of 2.
As an embodiment, a licensed spectrum is used for transmitting the first control signal.
As one embodiment, an omni-directional antenna is used to transmit the first control signal.
As one 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 one 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 one embodiment, the first control signal explicitly indicates the first subset of reference signals.
As one embodiment, the first control signal implicitly indicates the first subset of reference signals.
As one embodiment, the first control signal indicates an identification of the first subset of reference signals among the M subsets of reference signals.
As one embodiment, the first control signal indicates one reference signal group of 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 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 for determining a direction in which to perform the first type of energy detection.
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 example, one time of the energy detection means: the first type of communication node monitors received power over a time period of a given duration.
As an embodiment, one time of the energy detection means: the first type of communication node monitors received energy over a time period of a given duration.
As an example, one time of the energy detection means: the first type of communication node perceives (Sense) all wireless signals on a given frequency domain resource over a time period 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 example, one time of the energy detection means: the first type of communication node perceives (Sense) all wireless signals on a given frequency domain resource over a time period 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 an energy detection in LBT (Listen Before transmit).
As an embodiment, the energy detection is implemented by an energy detection manner in WiFi.
As an embodiment, the energy detection is implemented by measuring RSSI (Received Signal Strength Indication).
For an embodiment, the first type 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 wireless signal is a downlink reference signal.
As an embodiment, the first type communication node is a user equipment, and the first wireless signal is an uplink signal.
As an embodiment, the first wireless signal is an uplink control signal.
As an embodiment, the first wireless signal is an uplink data signal.
In one embodiment, the first wireless signal is an uplink reference signal.
As an embodiment, the first class communication node performs the class K energy detection on a first sub-band.
As one embodiment, the first sub-band is an unlicensed band.
As an embodiment, a frequency-domain resource of the target time-frequency resources is within the first sub-band.
As an embodiment, a time domain resource in the target time frequency resource is after a time domain resource occupied by the first type of energy detection.
As an embodiment, a time domain resource in the target time frequency resource is immediately followed by a time domain resource occupied by performing the first type energy detection.
As an embodiment, a distance between a starting point of a time domain resource in the target time frequency resource and a termination point of the time domain resource occupied by performing the first type energy detection is a fixed value in time.
As an embodiment, the fixed value is equal to 0.
As an embodiment, the fixed value is greater than 0.
As one embodiment, the fixed value is less than a target time threshold.
As one embodiment, the target time threshold is configured by default.
As an embodiment, the target time threshold is message configured.
As an embodiment, the detection powers obtained by performing the first type of energy detection for multiple times respectively using the first spatial receiving parameter group are used to determine whether the first wireless signal can be transmitted on the target time-frequency resource.
For 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 by using the first spatial receiving parameter group for L1 times to obtain L1 detection powers, where L1 is a positive integer not less than 1.
As an embodiment, all of the L1 detection 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 detection powers is higher than the target power threshold, and the first type communication node abandons transmitting the first wireless signal on the target time-frequency resource.
As an embodiment, a time slot exists, and the detected power obtained by performing the first type energy detection using the first spatial receiving parameter group in this time slot is lower than the target power threshold, and this time slot is referred to as a first type idle time slot.
As an example, the length of the time slot is 16 microseconds.
As an example, the length of the time slot is 9 microseconds.
As an example, the time period is a duration period not shorter than 4 microseconds.
As an embodiment, the first type energy detection is performed on consecutive L2 slots, where L2 is a positive integer not less than 1.
As an embodiment, if all the L2 timeslots are the first type of idle timeslot, the first wireless signal is transmitted on the target time-frequency resource.
As an embodiment, if there is at least one idle timeslot other than the first class in the L2 timeslots, the first wireless signal is abandoned from being transmitted on the target time-frequency resource.
As an embodiment, the L2 time slots are immediately followed by a time domain resource in the target time frequency resource.
As an embodiment, a distance between a starting point of the time domain resource in the target time frequency resource and the end point of the L2 slots is a fixed value over time
As an embodiment, L spatial receiving parameter sets are respectively used for receiving L reference signal groups in the first reference signal subset, the first spatial receiving parameter set is one of the L spatial receiving parameter sets, and L is a positive integer greater than 1.
For one embodiment, the first subset of reference signals consists of the L sets of reference signals.
As one 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 sender of the K reference signal groups respectively performs M types of energy detection using the M spatial receiving parameter groups, the M spatial receiving parameter groups correspond to the M spatial transmitting parameter groups one by one, and the result of the M types of energy detection is used to determine the first reference signal subset.
As an embodiment, the target spatial receiving parameter set is one of the M spatial receiving parameter sets, and the target spatial receiving parameter set corresponds to the target spatial transmitting parameter set among the M spatial transmitting parameter sets.
As an embodiment, the parameter values in the target spatial receive parameter set are the same as the parameter values in the target spatial transmit parameter set.
As an embodiment, the phase shifter coefficients in the target set of spatial receive parameters are the same as the phase shifters in the target set of spatial transmit parameters.
As one embodiment, the set of target spatial receive parameters is used to generate a target analog receive beam and the set of target spatial transmit parameters is used to generate a target analog transmit beam.
As an embodiment, the target analog receive beam has the same coverage angle as the target analog transmit beam.
As an embodiment, the spatial coverage of the target analog receive beam is the same as the target analog transmit beam.
As an embodiment, the strongest receiving direction of the target analog receiving beam is aligned with the strongest transmitting direction of the target analog transmitting beam.
For one embodiment, the target set of spatial receive parameters and the target set of spatial transmit parameters are QCL (Quadi Co-located) in spatial parameters.
For one embodiment, the set of target spatial transmit parameters may be used to infer the set of target spatial receive parameters.
As an example, the strongest transmit direction generated using the set of target spatial transmit parameters may be used to infer the strongest receive direction generated using the set of target spatial receive parameters.
As an embodiment, the first type communication node performs a second type of energy detection using a second set of spatial receiving parameters, which is different from the first set of spatial receiving parameters; and the first type communication node 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 detection power obtained by performing the first type of energy detection for multiple times respectively using the first spatial receiving parameter group is used to determine whether the first wireless signal can be transmitted on the target time-frequency resource.
As an embodiment, the second spatial receiving parameter set is used to perform the first type energy detection for L3 times to obtain L3 detection powers, where L3 is a positive integer not less than 1.
As an embodiment, at least one of the L1 detection powers is not lower than the target power threshold, the L3 detection 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 detection powers is not lower than the target power threshold, at least one of the L3 detection powers is higher than the target power threshold, and the first type communication node abandons the transmission of the first wireless signal on the target time-frequency resource.
As an embodiment, a time slot exists, and the detected power obtained by performing the first type energy detection by using the second spatial receiving parameter group in this time slot is lower than the target power threshold, and this time slot is called a second type idle time slot.
As an example, the time period is a duration period not shorter than 4 microseconds.
As an embodiment, the first type of energy detection is performed on consecutive L4 slots, where L4 is a positive integer greater than 1.
As an embodiment, if there is at least one idle timeslot of the second type in the L2 timeslots, and all the L4 timeslots are idle timeslots of the first type, the first wireless signal is transmitted on the target time-frequency resource.
As an embodiment, if at least one idle time slot other than the first class exists in the L2 time slots, and at least one idle time slot other than the second class exists in the L4 time slots, the first wireless signal is abandoned to be transmitted on the target time-frequency resource.
As an embodiment, the time domain resource in the target time frequency resource immediately follows the L4 time slots.
As an embodiment, a distance between a starting point of a time domain resource in the target time frequency resource and a termination point of the L4 time slots is a fixed value over time
As an embodiment, 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.
In one embodiment, the second set of spatial reception parameters is different from the first set of spatial reception parameters.
In one embodiment, the direction of the analog receive beam generated using the second set of spatial receive parameters is different from the direction of the analog receive beam generated using the first set of spatial receive parameters.
In one embodiment, the second spatial reception parameter set includes spatial reception parameters different from spatial reception parameters included in the first spatial reception parameter set.
As an embodiment, the first reference signal group and the second reference signal group are orthogonal on an air interface resource.
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 the parameters acting on the phase shifter included in the first set of spatial reception parameters.
As an embodiment, the spatial receive filtering generated using the second set of spatial receive parameters is different from the spatial receive filtering generated using the first set of spatial receive parameters.
As one embodiment, the first subset of reference signals includes the second set of reference signals.
As an example, the L1 is equal to the L3.
As an example, the L2 is equal to the L4.
As an embodiment, the same set of spatial transmission parameters is used for transmitting the first reference signal group and the second reference signal group.
As an embodiment, the first type communication device sequentially performs the first type energy detection by using the first spatial receiving parameter group, and performs the second type energy detection by using the second spatial receiving parameter group.
As an embodiment, the first type of communication node transmits a second control signal indicating the second reference signal group.
As an embodiment, a licensed spectrum is used for transmitting the second control signal.
As one embodiment, an omni-directional antenna is used to transmit the second control signal.
For one 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.
In one embodiment, the second control signal is a PUCCH.
As an embodiment, the second control signal is a downlink control signal.
As an embodiment, the second control signal is PDCCH
As one embodiment, the set of spatial transmit parameters used to transmit the first wireless signal is related to the set of second spatial receive parameters.
As an embodiment, a third set of spatial transmission parameters is used for transmitting the set of 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.
In one embodiment, the second set of spatial receive parameters is used to generate a second analog receive beam and the third set of spatial transmit parameters is used to generate a third analog transmit beam.
As an embodiment, the second analog receive beam has the same coverage angle as the third analog transmit beam.
As an embodiment, the spatial coverage of the second analog receive beam is the same as the spatial coverage of the third analog transmit beam.
As an embodiment, the strongest receive direction of the second analog receive beam is aligned with the strongest transmit direction of the third analog transmit beam.
As one embodiment, the spatial coverage of the third analog transmit beam is within the spatial coverage of the second analog receive beam.
For one embodiment, the third analog transmit beam has a coverage angle within the coverage angle 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 (Quadi Co-located) in spatial parameters.
As an example, the second set of spatial reception parameters may be used to infer the third set of spatial transmission parameters.
As an example, the strongest receiving direction generated using the second set of spatial receiving parameters may be used to infer the strongest transmitting direction generated using the third set of spatial transmitting parameters.
As one embodiment, the set of spatial transmit parameters used to transmit the first wireless signal is related to the first set of spatial receive parameters.
As an embodiment, the parameter values in the first spatial receive parameter set are the same as the parameter values in the third spatial transmit 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.
In one embodiment, the first set of spatial receive parameters is used to generate a first analog receive beam and the third set of spatial transmit parameters is used to generate a third analog transmit beam.
As an embodiment, the first analog receive beam and the third analog transmit beam have the same coverage angle.
As an embodiment, the spatial coverage of the first analog receive beam and the third analog transmit beam is the same.
As an embodiment, the strongest receive direction of the first analog receive beam is aligned with the strongest transmit direction of the third analog transmit beam.
As an embodiment, the spatial coverage of the third analog transmit beam is within the spatial coverage of the first analog receive beam.
For one embodiment, the third analog transmit beam has a coverage angle within the coverage angle of the first analog receive beam.
As an embodiment, the first spatial reception parameter set and the third spatial transmission parameter set are QCL (Quadi Co-located) in spatial parameters.
As an example, the first set of spatial receive parameters may be used to infer the third set of spatial transmit parameters.
As an example, the strongest receiving direction generated using the first set of spatial receiving parameters may be used to infer the strongest transmitting direction generated using the third set of spatial transmitting 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 a network architecture 200 of NR5G, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced) systems. The NR5G or LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200 or some other suitable terminology. The EPS 200 may include one or more UEs (User Equipment) 201, ng-RANs (next generation radio access networks) 202, epcs (Evolved Packet Core)/5G-CNs (5G-Core Network,5G Core Network) 210, hss (Home Subscriber Server) 220, and internet services 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the 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 towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (point of transmission reception), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the EPC/5G-CN210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a drone, an aircraft, a narrowband physical network device, a machine type communication device, a terrestrial vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the EPC/5G-CN210 via an S1/NG interface. The EPC/5G-CN210 includes an MME/AMF/UPF211, other MMEs/AMF/UPFs 214, an S-GW (Service Gateway) 212, and a P-GW (Packet data Network Gateway) 213.MME/AMF/UPF211 is a control node that handles signaling between UE201 and EPC/5G-CN210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-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 an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a PS streaming service (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 multi-antenna transmission.
As an embodiment, the gNB203 supports multiple antenna transmission.
Example 3
Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the User Equipment (UE) and the base station equipment (gNB or eNB) in three layers: layer 1, layer 2 and layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as 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) 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., far end UE, server, etc.). The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides header compression for upper layer 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 packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for the physical layer 301 and the L2 layer 305, but without the header compression function for the control plane. The Control plane also includes a 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 configures the lower layers using RRC signaling between the gNB and the UE.
The wireless protocol architecture of fig. 3 is applicable to the first type of communication node in the present application, as an example.
The wireless protocol architecture of fig. 3 is applicable to the second type of communication device in the present application, as an example.
As an example, 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 in this application is generated in the RRC sublayer 306.
As an embodiment, the second control signal in this application is generated in the PHY301.
As an embodiment, the second control signal in this application is generated in the RRC sublayer 306.
As an example, the first wireless signal in this application is generated in the PHY301.
As an embodiment, the first radio signal in this 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, scheduler 443, memory 430, receive processor 412, transmit processor 415, mimo transmit processor 441, mimo detector 442, transmitter/receiver 416 and antennas 420 may be included in the base station apparatus (410).
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 the downlink transmission, the processing related to the base station device (410) may include:
upper layer packets arrive at controller/processor 440, controller/processor 440 provides packet header compression, encryption, packet segmentation concatenation and reordering, and demultiplexing of the multiplex 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 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;
controller/processor 440 informs scheduler 443 of the transmission requirement, scheduler 443 is configured to schedule the empty resource corresponding to the transmission requirement, and informs controller/processor 440 of the scheduling result;
controller/processor 440 passes control information for downlink transmission to transmit processor 415 resulting from processing of uplink reception by receive processor 412;
a transmit processor 415 receives the output bit stream of the 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 performs spatial processing (e.g., multi-antenna precoding, digital beamforming) on the data symbols, control symbols, or reference signal symbols and outputs a baseband signal to transmitter 416;
MIMO transmit processor 441 outputs analog transmit beamforming vectors to transmitter 416;
a transmitter 416 for converting the baseband signals provided by MIMO transmit processor 441 into radio frequency signals for transmission via 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., converts to digital and/or analog, amplifies, filters, upconverts, etc.) the respective sample stream to obtain a downlink signal; analog transmit beamforming is processed in transmitter 416.
In the downlink transmission, the processing related to the user equipment (UE 450) may include:
receiver 456 is configured to convert radio frequency signals received via antenna 460 to baseband signals for provision to MIMO detector 472; analog receive beamforming is processed in the receiver 456;
a MIMO detector 472 for MIMO detection from the signal received from receiver 456, providing a MIMO detected baseband signal to receive processor 452;
the receive processor 452 extracts analog receive beamforming related parameters to output to the MIMO detector 472, the MIMO detector 472 outputs analog receive beamforming vectors to the receiver 456;
receive processor 452 performs various signal receive processing functions for the L1 layer (i.e., physical layer) including decoding, deinterleaving, descrambling, demodulation, and physical layer control signaling extraction, etc.;
controller/processor 490 receives the bit stream output by receive processor 452 and provides packet header decompression, decryption, packet segmentation concatenation and reordering, and multiplexing and demultiplexing 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 downlink reception resulting from the processing of uplink transmissions by transmit processor 455 to receive processor 452.
In uplink transmission, the processing related to the user equipment (UE 450) may include:
a data source 467 provides upper layer packets to the controller/processor 490, the controller/processor 490 providing packet header compression, encryption, packet segmentation concatenation and reordering, and multiplexing and demultiplexing between logical and transport channels to implement L2 layer protocols for the user plane and the 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 transmission, resulting from processing of downlink reception by receive processor 452, to transmit processor 455;
a transmission processor 455 receives the output bit stream of the controller/processor 490 and performs 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, sounding Reference Signal (SRS)) generation, etc.;
a MIMO transmit processor 471 performs spatial processing (e.g., multi-antenna precoding, digital beamforming) on the data symbols, control symbols, or reference signal symbols, and outputs a baseband signal to the transmitter 456;
the MIMO transmit processor 471 outputs the analog transmit beamforming vectors to the transmitter 457;
a transmitter 456 for converting baseband signals provided by MIMO transmit processor 471 into radio frequency signals and transmitting 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., converts to analog, amplifies, filters, upconverts, etc.) the respective sample stream to obtain an uplink signal. Analog transmit beamforming is processed in transmitter 456.
In uplink transmission, the processing related to the base station apparatus (410) may include:
receiver 416 is configured to convert the radio frequency signals received via antenna 420 into baseband signals for provision to MIMO detector 442; analog receive beamforming is processed in receiver 416;
a MIMO detector 442 for MIMO detection of the received signals from receiver 416, and provides MIMO detected symbols to a receive processor 442;
MIMO detector 442 outputs analog receive beamforming vectors to receiver 416;
the receive processor 412 performs various signal receive processing functions for the L1 layer (i.e., physical layer) including decoding, deinterleaving, descrambling, demodulation, and physical layer control signaling extraction, etc.;
controller/processor 440 receives the bitstream output by receive processor 412, provides packet header decompression, decryption, packet segmentation concatenation and reordering, and demultiplexing of the multiplex 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 uplink transmission to receive processor 412 resulting from processing of downlink transmission by transmit processor 415;
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 configured to, with the at least one processor, the UE450 apparatus at least: receiving K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M spatial 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 using a first set of spatial receive parameters, the first set of spatial receive 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 sending the first wireless signal on the target time frequency resource, or abandoning sending 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 result in actions comprising: receiving K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M spatial 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 using a first set of spatial receive parameters, the first set of spatial receive 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 sending the first wireless signal on the target time frequency resource, or giving up sending 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 configured to, with the at least one processor, the UE450 device at least: transmitting K reference signal groups, the K reference signal groups being divided into M reference signal subsets, M spatial transmission parameter groups being respectively used for transmitting reference signal groups in the M reference signal subsets, M being a positive integer greater than 1, and K being 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 receive parameters, the first set of spatial receive 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 of energy detection to judge whether a first wireless signal can be sent on the target time frequency resource; and the receiver of the first control signal sends a first wireless signal on the target time-frequency resource, or the receiver of the first signal abandons sending 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 result in actions comprising: transmitting K reference signal groups, the K reference signal groups being divided into M reference signal subsets, M spatial transmission parameter groups being respectively used for transmitting reference signal groups in the M reference signal subsets, M being a positive integer greater than 1, and K being 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 receive parameters, the first set of spatial receive parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; a receiver of the first control signal adopts the result of the first type of energy detection to judge whether a first wireless signal can be sent on the target time-frequency resource or not; and the receiver of the first control signal sends a first wireless signal on the target time-frequency resource, or the receiver of the first signal abandons sending the first wireless signal on the target time-frequency resource.
As one 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 apparatus at least: transmitting K reference signal groups, the K reference signal groups being divided into M reference signal subsets, M spatial transmission parameter groups being respectively used for transmitting reference signal groups in the M reference signal subsets, M being a positive integer greater than 1, and K being 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 receive parameters, the first set of spatial receive 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 of energy detection to judge whether a first wireless signal can be sent on the target time frequency resource; and the receiver of the first control signal sends a first wireless signal on the target time-frequency resource, or the receiver of the first signal abandons sending 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 result in actions comprising: transmitting K reference signal groups, the K reference signal groups being divided into M reference signal subsets, M spatial transmission parameter groups being respectively used for transmitting reference signal groups in the M reference signal subsets, M being a positive integer greater than 1, and K being 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 receive parameters, the first set of spatial receive parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; a receiver of the first control signal adopts the result of the first type of energy detection to judge whether a first wireless signal can be sent on the target time-frequency resource or not; and the receiver of the first control signal sends a first wireless signal on the target time-frequency resource, or the receiver of the first signal abandons sending the first wireless signal on the target time-frequency resource.
As one 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 apparatus at least: receiving K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M spatial 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 using a first set of spatial reception parameters, the first set of spatial reception parameters being used for receiving a first set of reference signals included in 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 sending the first wireless signal on the target time frequency resource, or giving up sending 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 result in actions comprising: receiving K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M spatial 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 using a first set of spatial receive parameters, the first set of spatial receive 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 sending the first wireless signal on the target time frequency resource, or giving up sending the first wireless signal on the target time frequency resource. As an embodiment, the UE450 corresponds to a first type of communication node in the present application.
As an embodiment, the UE450 corresponds to a first type of communication node in the present application.
As an embodiment, the UE450 corresponds to the second type communication node in the present application.
As an embodiment, the gNB410 corresponds to a first type communication node in the present application.
As an embodiment, the gNB410 corresponds to a second type of communication node in the present application.
For one embodiment, receiver 416, MIMO detector 442 and receive processor 412 are configured to receive the K reference signal groups.
For one embodiment, 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 this application.
For one embodiment, receiver 416, MIMO detector 442 and receive processor 412 are used to perform the first type of energy detection in the present application.
As an embodiment, the receiving processor 412 is used to determine whether the first wireless signal in the present application can be transmitted on the target time-frequency resource.
As an example, at least the first three of transmit processor 415, mimo transmit processor 441, transmitter 416 and controller/processor 440 may be configured to transmit the first wireless signal in this application.
For one embodiment, receiver 416, MIMO detector 442 and receive processor 412 are used to perform the second type of energy detection in the present application.
For one embodiment, at least the first three of the receiver 416, the MIMO detector 442, the receive processor 412 and the controller/processor 440 are configured to transmit the second control signals as described herein.
For one embodiment, the transmit processor 455, the MIMO transmit processor 471 and the transmitter 456 are used to transmit the K reference signal sets in this application.
As one example, at least the first three of the transmit processor 455, mimo transmit processor 471, transmitter 456, and controller/processor 490 may be used to send the first control signal in this application.
For one embodiment, the receiver 456, MIMO detector 472 and receive processor 452 are configured to monitor the first wireless signal in the present application on a target time-frequency resource.
For one embodiment, receiver 456, MIMO detector 472, and receive processor 452 are configured to perform the M-class energy detection described herein on a target time-frequency resource.
As an example, at least the first three of receiver 456, mimo detector 472, receive processor 452, and controller/processor 490 may be configured to receive a second control signal in this application.
For one embodiment, receiver 456, MIMO detector 472 and receive processor 452 are configured to receive the K reference signal groups.
For one embodiment, at least the first three of receiver 456, MIMO detector 472, receive processor 452, and controller/processor 440 are configured to receive a first control signal in this application.
For one embodiment, receiver 456, MIMO detector 472 and receive processor 452 are configured to perform a first type of energy detection in the present application.
For one embodiment, the receiving processor 452 is configured to determine whether the first wireless signal in the present application can be transmitted on the target time-frequency resource.
As one example, at least the first three of the transmit processor 455, mimo transmit processor 471, transmitter 456, and controller/processor 490 may be configured to transmit the first wireless signal in this application.
For one embodiment, receiver 456, MIMO detector 472 and receive processor 452 are used to perform the second type of energy detection in this application.
For one embodiment, at least the first three of receiver 456, MIMO detector 472, receive processor 452 and controller/processor 440 are configured to transmit the second control signals in this application.
For one embodiment, transmit processor 415, MIMO transmit processor 441 and transmitter 416 are used to transmit the K reference signal groups in this application.
As an example, at least the first three of transmit processor 415, mimo transmit processor 441, transmitter 416 and controller/processor 440 may be configured to transmit the first control signals in this application.
As an example, at least the first three of the receiver 416, the mimo detector 442, the receive processor 412, and the controller/processor 440 may be configured to monitor the first wireless signal in the present application over a target time-frequency resource.
For one embodiment, the receiver 416, MIMO detector 442 and receive processor 412 are used to perform the M-class energy detection described herein on target time-frequency resources.
For one embodiment, receiver 416, MIMO detector 442 and at least the first three of receive processor 412 and controller/processor 440 are used to receive the second control signal in this application.
Example 5
Embodiment 5 illustrates a flow chart of wireless transmission, as shown in fig. 5. In fig. 5, a first type of communication node communicates with a second type of communication node. The steps identified in blocks F1, F2 and F3 are optional and the steps identified in block F3 may not be performed.
For theFirst of allCommunication-like node C1In step S11, K reference signal groups are received, in step S12, a first control signal is received, in step S13, a first type of energy detection is performed, in step S14, a second type of energy detection is performed, in step S15, it is determined whether a first radio signal can be transmitted on a target time-frequency resource, in step S16, a second control signal is transmitted, and in step S17, a first radio signal is transmitted on a target time-frequency resource.
For theCommunication node C2 of the second kindIn step S21, K reference signal groups are transmitted, in step S22, K energy detection is performed, in step S23, a first control signal is transmitted, in step S24, a second control signal is received, and in step S25, a first wireless signal is monitored on a target time-frequency resource.
In embodiment 5, the K reference signal groups are divided into M reference signal subsets, M spatial transmission parameter sets are respectively used for transmitting reference signal groups in the M reference signal subsets, where 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 performs a first type of energy detection using a first spatial receiving parameter set, where the first spatial receiving parameter set is used by C1 to receive a first reference signal group included in the first reference signal subset; 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 of energy detection; if the first wireless signal is judged to be capable of being sent on the target time frequency resource, the step 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 sending the first wireless signal on the target time frequency resource; and C2, monitoring the first wireless signal on a target time frequency resource.
As an 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 an embodiment, the monitoring means that C2 cannot determine whether the first wireless signal is transmitted on the target time-frequency resource before successfully decoding the wireless signal received on the target time-frequency resource.
As an embodiment, L sets of spatial receiving parameters are used by C1 to receive L sets of reference signals in the first subset of reference signals, respectively, the first set of spatial receiving parameters being one of the L sets of spatial receiving parameters, and L being a positive integer greater than 1.
As an embodiment, C2 performs M types of energy detection respectively using the M spatial receiving parameter sets, where the M spatial receiving parameter sets correspond to the M spatial transmitting parameter sets one to one, and a result of the M types of energy detection is used to determine the first reference signal subset.
As an embodiment, the step in block F2 exists, C1 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 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 of energy detection.
As an embodiment, 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 one embodiment, the first subset of reference signals includes the second set of reference signals.
As an embodiment, the step in block F3 is present, the second control signal indicating the second set of reference signals.
As one embodiment, the set of spatial transmit parameters used to transmit the first wireless signal is related to the set of second spatial receive parameters.
As one embodiment, the set of spatial transmit parameters used to transmit the first wireless signal is related to the first set of spatial receive 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 sets of reference signals in the present application, as shown in fig. 6.
In embodiment 6, a second type of communication node in the present application transmits K sets of reference signals in the present application. The K reference signal groups are divided into M reference signal subsets, namely reference signal subsets #1- # M, M spatial transmission parameter sets are respectively used by the second type communication nodes 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. The M spatial transmission parameter sets are used to generate the second type transmission beams #1 to # M in fig. 6, respectively. A first type of communication node in one application receives the K sets of reference signals. A first type of communication node in one application receives the K sets of reference signals. The L sets of spatial receiving parameters in this application are used to generate the first type receiving 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 receive beams #1 to # L are used to receive L sets of reference signals, respectively, in one subset of reference signals.
As an example, 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-RSs.
As an embodiment, the time-frequency resources of one of the K reference signal groups are used to determine to which one of the M reference signal subsets the reference signal group belongs.
As an embodiment, the first spatial receiving parameter group in the present application is one of the first type receiving beams #1 to # L.
As an embodiment, the second spatial receiving parameter group in the present application is one of the first type receiving beams #1 to # L.
As an embodiment, the first reference signal subset in this 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, the second set of spatial reception parameters is used for receiving a second set of reference signals, the first set of reference signals and the second set of reference signals both belong 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 spatial transmission parameter sets in the present application are used to generate the second type transmission beams #1 to # M in fig. 7, respectively, and the second type transmission beams #1 to # M are used to transmit the reference signal groups in the reference signal subsets #1 to # M, respectively. The second type of reception beams #1- # M are used for receiving wireless signals in energy detection #1- # M, respectively. The energy assays #1- # M are the M-class energy assays in this application. The M spatial receive parameter sets are used to generate the second type of receive beams #1- # M, respectively. The second type transmission beams #1 to # M correspond one-to-one to the second type reception beams #1 to # M. The M spatial reception parameter sets correspond to the M spatial transmission parameter sets one to one.
As an embodiment, the target spatial receiving parameter set is one of the M spatial receiving parameter sets, and the target spatial receiving parameter set corresponds to a target spatial transmitting parameter set among the M spatial transmitting parameter sets.
As an embodiment, the parameter values in the target spatial receive parameter set are the same as the parameter values in the target spatial transmit parameter set.
As an embodiment, the phase shifter coefficients in the target set of spatial receive parameters are the same as the phase shifters in the target set of spatial transmit parameters.
As one embodiment, the set of target spatial receive parameters is used to generate a target analog receive beam and the set of target spatial transmit parameters is used to generate a target analog transmit beam.
As an embodiment, the target analog receive beam has the same coverage angle as the target analog transmit beam.
As an embodiment, the spatial coverage of the target analog receive beam is the same as the target analog transmit beam.
As an embodiment, the strongest receiving direction of the target analog receiving beam is aligned with the strongest transmitting direction of the target analog transmitting beam.
For one embodiment, the target set of spatial receive parameters and the target set of spatial transmit parameters are QCL (Quadi Co-located) in spatial parameters.
For one embodiment, the set of target spatial transmit parameters may be used to infer the set of target spatial receive parameters.
As an example, the strongest transmit direction generated using the set of target spatial transmit parameters may be used to infer the strongest receive direction generated using the set of target spatial receive parameters.
Example 8
Embodiment 8 illustrates an antenna structure of a first type 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, which are radio frequency chain #1, radio frequency chain #2, …, and radio frequency chain # M. The M radio frequency chains are connected to a baseband processor.
As an embodiment, a bandwidth supported by any one of the M radio frequency chains does not exceed a bandwidth of a sub-band in which the first type communication node is configured.
As an embodiment, M1 radio frequency chains in the M radio frequency chains overlap through Antenna Virtualization (Virtualization) to generate an Antenna Port (Antenna Port), where the M1 radio frequency chains are respectively connected to M1 Antenna groups, and each Antenna group in the M1 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. Mapping coefficients of antennas included in any one antenna group in the M1 antenna groups to the antenna ports form an analog beamforming vector of the antenna group. The coefficients of the phase shifters and the antenna switch states correspond to the analog beamforming vectors. And the corresponding analog beamforming vectors of the M1 antenna groups are arranged diagonally to form an analog beamforming matrix of the antenna port. The mapping coefficients of the M1 antenna groups to the antenna ports constitute digital beamforming vectors of the antenna ports.
As an example, the spatial reception scheme and the spatial transmission scheme in the present application include adjustment of coefficients used for states of corresponding antenna switches and phase shifters
As an embodiment, the spatial receiving scheme and the spatial transmitting scheme in the present application are used to generate beamforming coefficients corresponding to a baseband.
As an example, antenna switches may be used to control the beam width, the greater the working antenna spacing, the wider the beam.
As an embodiment, the M1 rf chains belong to the same panel.
As an example, the M1 radio frequency chains are QCL (Quasi Co-Located).
As an embodiment, M2 radio frequency chains of the M radio frequency chains are superimposed through antenna Virtualization (Virtualization) to generate one transmit beam or one receive beam, the M2 radio frequency chains are respectively connected to 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 of the receive beam. And the corresponding analog beamforming vectors of the M2 antenna groups are arranged diagonally to form an analog beamforming matrix of the receiving beam. The mapping coefficients of the M2 antenna groups to the receive beam constitute a digital beamforming vector for the receive beam.
As an embodiment, the M1 rf chains belong to the same panel.
As an embodiment, the M2 radio frequency chains are QCL.
As an example, the directions of the analog beams formed by the M radio frequency chains are respectively shown as spatial ji receiving schemes #1- # K and spatial transmitting scheme #1 in fig. 6.
As an embodiment, the sum of the number of layers configured by the first type of communication node on each of the parallel sub-bands is less than or equal to 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 M.
As an embodiment, for each of the parallel sub-bands, 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. not explicitly configured) for each of the parallel sub-bands.
As one embodiment, the layers are mapped one-to-one to the antenna ports.
As one embodiment, one layer is mapped onto multiple antenna ports.
Example 9
Embodiment 9 illustrates a block diagram of a processing device in a first-type communication node, as shown in fig. 9. In fig. 9, the first type 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.
For one embodiment, the first receiver module 901 includes the receiver 416, the mimo detector 442 and the receive processor 412 in embodiment 4.
For one embodiment, the second receiver module 902 includes at least three of the receiver 416, the mimo detector 442, the receive processor 412, and the controller/processor 440 of embodiment 4.
For one embodiment, the third receiver module 903 comprises the receiver 416, the mimo detector 442 and the receive processor 412 of embodiment 4.
For one embodiment, the first handler module 904 comprises the receive processor 412 of embodiment 4.
For one embodiment, the fourth transmitter module 905 includes at least the first three of the transmit processor 415, the mimo transmit processor 441, the transmitter 416, and the controller/processor 440 of embodiment 4.
For one embodiment, the first receiver module 901 includes the receiver 456, the mimo detector 472 and the receive processor 452 in embodiment 4.
For one embodiment, the second receiver module 902 includes at least three of the receiver 456, the mimo detector 472, the receive processor 452, and the controller/processor 490 of embodiment 4.
For one embodiment, the third receiver module 903 comprises the receiver 456, the mimo detector 472 and the receive processor 452 in embodiment 4.
For one embodiment, the first handler module 904 includes the receiving processor 4552 in embodiment 4.
For one embodiment, the fourth transmitter module 905 includes at least three of the transmit processor 455, the mimo transmit processor 471, the transmitter 456, and the controller/processor 490 of embodiment 4.
First receiver module 901: receiving K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M spatial 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.
-the second receiver module 902: receiving 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 third receiver module 903: a first type of energy detection is performed using a first set of spatial receive parameters, which is used to receive a first set of reference signals comprised by the first subset of reference signals.
The first handler module 904: and 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 of energy detection.
Fourth transmitter module 905: and sending the first wireless signal on the target time frequency resource, or giving up sending the first wireless signal on the target time frequency resource.
As an embodiment, L spatial receiving parameter sets are respectively used for receiving L reference signal groups in the first reference signal subset, the first spatial receiving parameter set is one of the L spatial receiving parameter sets, and L is a positive integer greater than 1.
As an embodiment, the sender of the K reference signal groups respectively performs M types of energy detection using the M spatial receiving parameter groups, the M spatial receiving parameter groups correspond to the M spatial transmitting parameter groups one by one, and the 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 spatial receiving parameter set, which is different from the first spatial receiving parameter set; the first processor module 904 determines whether the first wireless signal can be transmitted on the target time-frequency resource by using the result of the second type of energy detection.
As an embodiment, 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 one embodiment, the first subset of reference signals includes the second set of reference signals.
For one embodiment, the fourth transmitter module 905 transmits a second control signal indicating the second set of reference signals.
As an embodiment, the set of spatial transmit parameters used to transmit the first wireless signal is related to the second set of spatial receive parameters.
As an embodiment, the set of spatial transmit parameters used to transmit the first wireless signal is related to the first set of spatial receive 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 a processing device in a second type of communication node, as shown in fig. 10. In fig. 10, the second type of communication node processing apparatus 1000 mainly comprises a first transmitter module 1001, a second transmitter module 1002, and a fourth receiver module 1003.
For one embodiment, the first transmitter module 1001 includes a transmit processor 455, a mimo transmit processor 471 and a transmitter 456 are used to transmit the K sets of reference signals in the present application.
For one embodiment, 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.
For one embodiment, the fourth receiver module 1003 includes a receiver 456, a mimo detector 472, and a receive processor 452.
For one embodiment, the first transmitter module 1001 includes a transmit processor 415, a mimo transmit processor 441, and a transmitter 416.
For one embodiment, the second transmitter module 1002 includes at least three of the transmit processor 415, the mimo transmit processor 441, and the transmitter 416 and the controller/processor 440.
For one 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.
First transmitter module 1001: transmitting K reference signal groups, the K reference signal groups being divided into M reference signal subsets, M spatial transmission parameter groups being respectively used for transmitting reference signal groups in the M reference signal subsets, M being a positive integer greater than 1, and K being a positive integer not less than M;
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;
fourth receiver module 1003: monitoring a first wireless signal 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 is 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 of energy detection to judge whether a first wireless signal can be sent on the target time frequency resource; and the receiver of the first control signal sends a first wireless signal on the target time-frequency resource, or the receiver of the first signal abandons sending the first wireless signal on the target time-frequency resource.
As an embodiment, L sets of spatial receiving parameters are used to receive L sets of reference signals in the first subset of reference signals, respectively, the first set of spatial receiving parameters is one of the L sets of spatial receiving parameters, and L is a positive integer greater than 1.
As an embodiment, the fourth receiver module 1003 performs M types of energy detection by using the M sets of spatial receiving parameters, respectively, where the M sets of spatial receiving parameters correspond to the M sets of spatial transmitting parameters one by one, and a result of the M types of energy detection is used to determine the first reference signal subset.
As an embodiment, a 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 of energy detection to judge whether the first wireless signal can be sent on the target time-frequency resource.
As an embodiment, 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.
For one embodiment, the first subset of reference signals includes the second set of reference signals.
For one embodiment, the fourth receiver module 1003 receives a second control signal indicating the second reference signal group.
As one embodiment, the set of spatial reception parameters used to receive the first wireless signal is related to the set of spatial transmission parameters used to transmit the second set of reference signals.
As an embodiment, the set of spatial reception parameters used for receiving the first wireless signal relates to the 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.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, such as a read-only memory, a hard disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The UE or the terminal in the present application includes, but is not limited to, a mobile phone, a tablet, a notebook, a network card, a low power consumption 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 reception node TRP, and other wireless communication devices.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (44)

1. A method in a first type of communication node used for channel access over an 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 spatial 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 using a first set of spatial receive parameters, the first set of spatial receive 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 using the detection power obtained by the first type of energy detection;
sending a first wireless signal on a target time-frequency resource, or giving up sending the first wireless signal on the target time-frequency resource; the set of spatial transmit parameters used to transmit the first wireless signal is related to the first set of spatial receive parameters.
2. The method of claim 1, wherein L sets of spatial receive parameters are used to receive L sets of reference signals in the first subset of reference signals, respectively, wherein the first set of spatial receive parameters is one of the L sets of spatial receive parameters, and wherein L is a positive integer greater than 1.
3. The method according to claim 1 or 2, wherein the sender of the K reference signal groups respectively performs M types of energy detection using M sets of spatial receiving parameters, the M sets of spatial receiving parameters corresponding to the M sets of spatial transmitting parameters one-to-one, and the result of the M types of energy detection is used to determine the first reference signal subset.
4. The method of claim 1, comprising:
performing a second type of energy detection using a second set of spatial receive parameters, the second set of spatial receive parameters being different from the first set of spatial receive 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 of energy detection.
5. The method of claim 2, comprising:
performing a second type of energy detection using a second set of spatial receive parameters, the second set of spatial receive parameters being different from the first set of spatial receive 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 of energy detection.
6. The method of claim 5, wherein the second set of spatial reception parameters is one of the L sets of spatial reception parameters used for receiving a second set of reference signals included in the K sets of reference signals, the second set of reference signals being different from the first set of reference signals.
7. The method of claim 6, wherein the first subset of reference signals comprises the second set of reference signals.
8. The method according to claim 6 or 7, comprising:
transmitting a second control signal indicating the second reference signal group.
9. The method of claim 6 or 7, wherein the set of spatial transmit parameters used for transmitting the first wireless signal is related to the set of second spatial receive parameters.
10. The method of claim 8, wherein the set of spatial transmit parameters used to transmit the first wireless signal is related to the second set of spatial receive parameters.
11. Method according to claim 1 or 2, wherein said first type communication node is a user equipment or said first type communication node is a base station.
12. A method in a second type of communication node used for channel access over an unlicensed spectrum in wireless communications, comprising:
transmitting K reference signal groups, the K reference signal groups being divided into M reference signal subsets, M spatial transmission parameter groups being respectively used for transmitting reference signal groups in the M reference signal subsets, M being a positive integer greater than 1, and K being 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 receive parameters, the first set of spatial receive parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; a 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; a receiver of the first control signal sends a first wireless signal on the target time-frequency resource, or the receiver of the first control signal abandons sending the first wireless signal on the target time-frequency resource; the set of spatial transmit parameters used to transmit the first wireless signal is related to the first set of spatial receive parameters.
13. The method of claim 12, wherein L sets of spatial receive parameters are used to receive L sets of reference signals in the first subset of reference signals, respectively, wherein the first set of spatial receive parameters is one of the L sets of spatial receive parameters, and wherein L is a positive integer greater than 1.
14. The method according to claim 12 or 13, wherein the second type of communication node performs M types of energy detection using M sets of spatial receiving parameters, respectively, the M sets of spatial receiving parameters corresponding to the M sets of spatial transmitting parameters one-to-one, and the result of the M types of energy detection is used to determine the first subset of reference signals.
15. The method of claim 12, wherein a 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 of energy detection to judge whether the first wireless signal can be sent on the target time-frequency resource.
16. The method of claim 13, wherein a receiver of the first control signal performs a second type of energy detection using a second set of spatial receive parameters, the second set of spatial receive parameters being different from the first set of spatial receive parameters; and the receiver of the first control signal adopts the result of the second type of energy detection to judge whether the first wireless signal can be sent on the target time-frequency resource.
17. The method of claim 16, wherein 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 included in the K sets of reference signals, the second set of reference signals being different from the first set of reference signals.
18. The method of claim 17, wherein the first subset of reference signals comprises the second set of reference signals.
19. The method according to claim 17 or 18, comprising:
receiving a second control signal indicating the second reference signal group.
20. The method of claim 17 or 18, wherein the set of spatial receiving parameters used for receiving the first wireless signal is related to the set of spatial transmitting parameters used for transmitting the second set of reference signals.
21. The method of claim 12 or 13, wherein the set of spatial receiving parameters used for receiving the first wireless signal is related to the set of spatial transmitting parameters used for transmitting the first set of reference signals.
22. Method according to claim 12 or 13, wherein the communication node of the second type is a base station or the communication node of the second type is a user equipment.
23. A first type of communications node device for use in channel access over an unlicensed spectrum in wireless communications, comprising:
a first receiver module, configured to receive K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, and M spatial transmission parameter groups are respectively used for transmitting reference signal groups in the M reference signal subsets, where M is a positive integer greater than 1, and K is a positive integer not less than M;
a second receiver module to receive 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 configured to perform a first type of energy detection using a first set of spatial receive parameters, the first set of spatial receive parameters being used to receive a first set of reference signals included in 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, configured to send a first wireless signal on a target time-frequency resource, or abandon sending the first wireless signal on the target time-frequency resource; the set of spatial transmit parameters used to transmit the first wireless signal is related to the first set of spatial receive parameters.
24. The first type of communication node device of claim 23, wherein L sets of spatial reception parameters are used for receiving L sets of reference signals, respectively, in the first subset of reference signals, wherein the first set of spatial reception parameters is one of the L sets of spatial reception parameters, wherein L is a positive integer greater than 1.
25. The first-class communications node device according to claim 23 or 24, wherein the sender of the K reference signal groups respectively performs M-class energy detection using M sets of spatial receiving parameters, the M sets of spatial receiving parameters being in one-to-one correspondence with the M sets of spatial transmitting parameters, and the result of the M-class energy detection is used to determine the first reference signal subset.
26. The first type of communications node device of claim 23, wherein 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 adopts the result of the second type of energy detection to judge whether the first wireless signal can be sent on the target time frequency resource.
27. The first type of communications node device of claim 24, wherein 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 adopts the result of the second type of energy detection to judge whether the first wireless signal can be sent on the target time frequency resource.
28. The first-type communication node device of claim 27, wherein 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.
29. The first class of communication node devices of claim 28, wherein the first subset of reference signals comprises the second set of reference signals.
30. Communication node device of the first type according to claim 28 or 29, characterized in that said fourth transmitter module transmits a second control signal indicating said second set of reference signals.
31. The first type of communication node device according to claim 28 or 29, wherein the set of spatial transmission parameters used for transmitting the first wireless signal relates to the set of second spatial reception parameters.
32. The first type of communication node device of claim 30, wherein the set of spatial transmit parameters used for transmitting the first wireless signal is related to the second set of spatial receive parameters.
33. The first type of communication node device according to claim 23 or 24, wherein the first type of communication node is a user equipment and the first type of communication node is a base station.
34. A second type of communications node device for channel access over an unlicensed spectrum in wireless communications, comprising:
a first transmitter module, configured to transmit K reference signal groups, wherein the K reference signal groups are divided into M reference signal subsets, M spatial transmission parameter groups are respectively used for transmitting 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 to transmit 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 for monitoring 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 receive parameters, the first set of spatial receive parameters being used to receive a first set of reference signals comprised by the first subset of reference signals; a 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; a receiver of the first control signal sends a first wireless signal on the target time-frequency resource, or the receiver of the first control signal abandons sending the first wireless signal on the target time-frequency resource; the set of spatial transmit parameters used to transmit the first wireless signal is related to the first set of spatial receive parameters.
35. The second-type communication node apparatus of claim 34, wherein L spatial receiving parameter sets are respectively used for receiving L reference signal groups in the first reference signal subset, the first spatial receiving parameter set is one of the L spatial receiving parameter sets, and L is a positive integer greater than 1.
36. The second type of communications node apparatus of claim 34 or 35, wherein the fourth receiver module performs M types of energy detection using M sets of spatial receiving parameters, respectively, the M sets of spatial receiving parameters having a one-to-one correspondence with the M sets of spatial transmitting parameters, and the result of the M types of energy detection is used to determine the first subset of reference signals.
37. The second type of communication node device according to claim 34 or 32, wherein 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 of energy detection to judge whether the first wireless signal can be sent on the target time-frequency resource.
38. The apparatus of claim 35, wherein 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 of energy detection to judge whether the first wireless signal can be sent on the target time-frequency resource.
39. The second-type communication node apparatus of claim 38, wherein the second spatial reception parameter group is one of the L spatial reception parameter groups, the second spatial reception parameter group being used for receiving a second reference signal group included in the K reference signal groups, the second reference signal group being different from the first reference signal group.
40. The second type of communication node device of claim 39, wherein the first subset of reference signals comprises the second set of reference signals.
41. The second type of communication node device of claim 39 or 40, wherein the fourth receiver module receives a second control signal, the second control signal indicating the second set of reference signals.
42. The second type of communication node device of claim 39 or 40, wherein the set of spatial receiving parameters used for receiving the first wireless signal relates to the set of spatial transmitting parameters used for transmitting the second set of reference signals.
43. The second type of communication node device according to claim 34 or 35, wherein the set of spatial receiving parameters used for receiving the first wireless signal relates to the set of spatial transmitting parameters used for transmitting the first set of reference signals.
44. The second type of communication node device according to claim 34 or 35, wherein the second type of communication node is a base station or the second type of communication node is a user equipment.
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