CN113316256A - Method and device for wireless communication in base station and user equipment - Google Patents

Method and device for wireless communication in base station and user equipment Download PDF

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Publication number
CN113316256A
CN113316256A CN202110571922.8A CN202110571922A CN113316256A CN 113316256 A CN113316256 A CN 113316256A CN 202110571922 A CN202110571922 A CN 202110571922A CN 113316256 A CN113316256 A CN 113316256A
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target
spatial
control signal
threshold
frequency resource
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陈晋辉
张晓博
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Shanghai Langbo Communication Technology Co Ltd
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Shanghai Langbo Communication Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • 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
    • 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
    • H04L5/0025—Spatial division following the spatial signature of the channel
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0808—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0866—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a dedicated channel for access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • 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

Abstract

The application discloses a method and a device for wireless communication in a base station and user equipment. Receiving, by a user equipment, a first control signal indicating a target time-frequency resource and a first spatial parameter set used for transmitting a first wireless signal; performing a first type of energy detection using the set of target spatial parameters; judging whether the first wireless signal can be sent on the target time-frequency resource or not by adopting a comparison result of the first type energy detection and a target threshold value; wherein the target threshold is associated with the target set of spatial parameters, the target threshold is greater than or equal to a first reference threshold associated with the first set of spatial parameters. The method and the device improve the performance of directional transmission and increase the flexibility of a system while avoiding the interference of uplink transmission on the ongoing transmission in other directions.

Description

Method and device for wireless communication in base station and user equipment
The present application is a divisional application of the following original applications:
application date of the original application: 2018.02.01
- -application number of the original application: 201810102569.7
The invention of the original application is named: method and device for wireless communication in base station and user equipment
Technical Field
The present application relates to transmission schemes for wireless signals in wireless communication systems, and more particularly, to methods and apparatus for multi-antenna transmission and unlicensed spectrum.
Background
In a conventional 3GPP (3rd 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 employs 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 that, in a 5G system, beamforming is used on a large scale, and how to improve the transmission efficiency of wireless signals on an unlicensed spectrum through beamforming is a key problem to be solved.
In view of the above, the present application discloses a solution. It should be noted that, without conflict, 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 used in a user equipment for wireless communication, characterized by comprising:
receiving a first control signal indicating a target time-frequency resource and a first set of spatial parameters used for transmitting a first wireless signal;
performing a first type of energy detection using the set of target spatial parameters;
judging whether the first wireless signal can be sent on the target time-frequency resource or not by adopting a comparison result of the first type energy detection and a target threshold value;
if the first wireless signal can be sent on the target time frequency resource, the first wireless signal is sent on the target time frequency resource by adopting the first space parameter group;
if the first wireless signal cannot be sent on the target time-frequency resource, the first wireless signal is abandoned to be sent on the target time-frequency resource;
wherein the target threshold is associated with the target set of spatial parameters, the target threshold is greater than or equal to a first reference threshold associated with the first set of spatial parameters.
As an embodiment, the foregoing is used for uplink channel access on an unlicensed spectrum.
As an embodiment, it is common knowledge that for uplink wireless transmission on unlicensed spectrum, the UE performs omni-directional LBT using a default determined unique energy detection threshold, and does not have to be configured or select a different energy detection threshold according to the receiving directionality of LBT.
As an example, one benefit of the above approach is that: the UE selects a directional LBT receiving beam covering the wireless signal transmitting direction according to the transmitting direction of the uplink wireless signal, and uses a threshold value associated with the directional (directional) LBT receiving beam to carry out channel access, thereby avoiding the interference to the ongoing transmission in other directions and simultaneously improving the performance of the directional transmission.
As an example, another benefit of the above method is: the UE associates a directional LBT receiving beam covering the wireless signal transmitting direction according to the transmitting direction of the uplink wireless signal, and uses a threshold value associated with the directional LBT receiving beam to carry out channel access, thereby avoiding the interference to the ongoing transmission in other directions and simultaneously improving the performance of the directional transmission.
As an example, a further benefit of the above method is that: and the UE selects the beam width and the associated threshold of directional LBT according to the first reference threshold, so that the flexibility of the LBT system is improved.
According to an aspect of the present application, the above method is characterized in that the target spatial parameter set is one of K candidate spatial parameter sets, the target threshold is one of K candidate thresholds, the K candidate spatial parameter sets are in one-to-one correspondence with the K candidate thresholds, and K is a positive integer greater than 1.
As an example, one benefit of the above approach is that: by adding candidate LBT beams, the flexibility of the directional LBT system is enhanced.
According to one aspect of the application, the above method is characterized by comprising: receiving K reference signal groups, the K candidate spatial parameter sets being respectively used for receiving the K reference signal groups, the target spatial parameter set being one of the K candidate spatial parameter sets.
As an example, one benefit of the above approach is that: the K candidate LBT beams are determined by the UE by the mode of reference signal group receiving, so that the flexibility of the directional LBT system is increased.
According to one aspect of the application, the above method is characterized by comprising: receiving a second control signal indicating the K candidate thresholds.
As an example, one benefit of the above approach is that: the base station configures multiple candidate thresholds to improve the flexibility of the directional LBT system.
According to an aspect of the application, the above method is characterized in that the second control signal indicates K difference values, which are respectively equal to the difference values between the K candidate thresholds and the first reference threshold.
As an example, one benefit of the above approach is that: the base station configures a plurality of candidate thresholds by indicating the difference value, thereby reducing signaling overhead.
According to one aspect of the application, the above method is characterized in that the first control signal is indicative of the target threshold.
As an example, one benefit of the above approach is that: the LBT receiving beam used for the uplink channel access is determined through the base station configuration threshold value, so that the flexibility of the system is increased, and the signaling overhead is reduced.
According to an aspect of the application, the above method is characterized in that the first spatial parameter set is associated with the target spatial parameter set.
As an example, one benefit of the above approach is that: the uplink sending beam is associated with the LBT receiving beam for the uplink channel access, so that the flexibility of the system is increased, and the signaling overhead is reduced.
According to one aspect of the application, the above method is characterized by comprising: prior to receiving the first control signal, receiving L sets of reference signals, L being a positive integer greater than 1; wherein a first reference signal group is one of the L reference signal groups, the first control signal indicates the first reference signal group, the first spatial parameter set is associated with a spatial parameter set used for receiving the first reference signal group, and the target spatial parameter set is associated with the first reference signal group.
As an example, one benefit of the above approach is that: and the downlink reference signal group is used for indicating the uplink transmission beam, thereby increasing the flexibility of the system.
According to an aspect of the application, the above method is characterized in that the first control signal indicates a maximum equivalent omnidirectional radiation power used for transmitting the first wireless signal, and the target threshold is associated with the maximum equivalent omnidirectional radiation power.
As an example, one benefit of the above approach is that: by configuring the implicit indication energy detection threshold value of the maximum equivalent omnidirectional radiation power, the signaling overhead is saved.
According to one aspect of the application, the method is characterized in that the spatial coverage generated using the target set of spatial parameters is larger than the spatial coverage generated using the first set of spatial parameters.
According to one aspect of the application, the method is characterized in that the sender of the first control signal performs a second type of energy detection using a second set of spatial parameters before sending the first control signal, the spatial coverage generated using the second set of spatial parameters being larger than the spatial coverage generated using the target set of spatial parameters.
As an example, one benefit of the above approach is that: the base station uses an omnidirectional or wider beam to carry out the LBT of the downlink channel access before the directional LBT used for the uplink channel access, thereby avoiding the interference of the transmission of the uplink wireless signal to the ongoing transmission in other directions.
The application discloses a method in a base station used for wireless communication, characterized by comprising:
transmitting a first control signal indicating a target time-frequency resource and a first set of spatial parameters used for transmitting a first wireless signal;
monitoring the first wireless signal on the target time-frequency resource;
the receiver of the first control signal performs a first type of energy detection by using a target spatial parameter set, and determines whether the first wireless signal can be transmitted on the target time-frequency resource by using a comparison result between a result of the first type of energy detection and a target threshold, where the target threshold is associated with the target spatial parameter set, the target threshold is greater than or equal to a first reference threshold, and the first reference threshold is associated with the first spatial parameter set.
According to an aspect of the present application, the above method is characterized in that the target spatial parameter set is one of K candidate spatial parameter sets, the target threshold is one of K candidate thresholds, the K candidate spatial parameter sets are in one-to-one correspondence with the K candidate thresholds, and K is a positive integer greater than 1.
According to one aspect of the application, the above method is characterized by comprising: transmitting K reference signal groups, the K candidate spatial parameter groups being used for receiving the K reference signal groups respectively, the target spatial parameter group being one of the K candidate spatial parameter groups.
According to one aspect of the application, the above method is characterized by comprising:
transmitting a second control signal indicating the K candidate thresholds.
According to an aspect of the application, the above method is characterized in that the second control signal indicates K difference values, which are respectively equal to the difference values between the K candidate thresholds and the first reference threshold.
According to one aspect of the application, the above method is characterized in that the first control signal is indicative of the target threshold.
According to an aspect of the application, the above method is characterized in that the first spatial parameter set is associated with the target spatial parameter set.
According to one aspect of the present application, the above method is characterized by comprising,
transmitting L sets of reference signals prior to transmitting the first control signal, L being a positive integer greater than 1;
wherein a first reference signal group is one of the L reference signal groups, the first control signal indicates the first reference signal group, the first spatial parameter set is associated with a spatial parameter set used for receiving the first reference signal group, and the target spatial parameter set is associated with the first reference signal group.
According to an aspect of the application, the above method is characterized in that the first control signal indicates a maximum equivalent omnidirectional radiation power used for transmitting the first wireless signal, and the target threshold is associated with the maximum equivalent omnidirectional radiation power.
According to one aspect of the application, the method is characterized in that the spatial coverage generated using the target set of spatial parameters is larger than the spatial coverage generated using the first set of spatial parameters.
According to one aspect of the application, the above method is characterized in that a second type of energy detection is performed using a second set of spatial parameters before the first control signal is transmitted; wherein the spatial coverage generated using the second set of spatial parameters is greater than the spatial coverage generated using the target set of spatial parameters.
The application discloses a user equipment used for wireless communication, characterized by comprising:
a first receiver to receive a first control signal indicating a target time-frequency resource and a first set of spatial parameters used to transmit a first wireless signal;
a second receiver for performing a first type of energy detection using the set of target spatial parameters;
the first processor judges whether the first wireless signal can be sent on the target time-frequency resource or not by adopting a comparison result of the first type energy detection and a target threshold value; if the first wireless signal cannot be sent on the target time-frequency resource, the first wireless signal is abandoned to be sent on the target time-frequency resource;
a third transmitter, configured to transmit the first wireless signal on the target time-frequency resource by using the first spatial parameter group if it is determined that the first wireless signal can be transmitted on the target time-frequency resource;
wherein the target threshold is associated with the target set of spatial parameters, the target threshold is greater than or equal to a first reference threshold associated with the first set of spatial parameters.
As an embodiment, the ue is characterized in that the target spatial parameter set is one of K candidate spatial parameter sets, the target threshold is one of K candidate thresholds, the K candidate spatial parameter sets are in one-to-one correspondence with the K candidate thresholds, and K is a positive integer greater than 1.
As an embodiment, the ue is characterized in that the first receiver receives K reference signal groups, the K candidate spatial parameter sets are respectively used for receiving the K reference signal groups, and the target spatial parameter set is one of the K candidate spatial parameter sets.
As an embodiment, the above user equipment is characterized in that the first receiver receives a second control signal indicating the K candidate thresholds.
As an embodiment, the user equipment as described above is characterized in that the second control signal indicates K difference values, which are respectively equal to the difference values between the K candidate thresholds and the first reference threshold.
As an embodiment, the above user equipment is characterized in that the first control signal indicates the target threshold.
As an embodiment, the user equipment as described above is characterized in that the first spatial parameter set is associated with the target spatial parameter set.
As an embodiment, the above user equipment is characterized in that the first receiver receives L reference signal groups before receiving the first control signal, where L is a positive integer greater than 1; wherein a first reference signal group is one of the L reference signal groups, the first control signal indicates the first reference signal group, the first spatial parameter set is associated with a spatial parameter set used for receiving the first reference signal group, and the target spatial parameter set is associated with the first reference signal group.
As an embodiment, the above user equipment is characterized in that the first control signal indicates a maximum equivalent omnidirectional radiation power used for transmitting the first wireless signal, and the target threshold is associated with the maximum equivalent omnidirectional radiation power.
As an embodiment, the user equipment is characterized in that the spatial coverage generated by using the target spatial parameter set is larger than the spatial coverage generated by using the first spatial parameter set.
As an embodiment, the user equipment is characterized in that the transmitter of the first control signal performs the second type of energy detection using a second spatial parameter set before transmitting the first control signal, and a spatial coverage generated using the second spatial parameter set is larger than a spatial coverage generated using the target spatial parameter set.
The application discloses a base station device used for wireless communication, characterized by comprising:
a first transmitter to transmit a first control signal indicating a target time-frequency resource and a first set of spatial parameters used to transmit a first wireless signal;
a third receiver that monitors the first wireless signal on the target time-frequency resource;
a receiver of the first control signal adopts a target space parameter group to execute first-class energy detection, and judges whether the first wireless signal can be sent on the target time-frequency resource or not by adopting a comparison result of a first-class energy detection result and a target threshold value; the target threshold is associated with the target set of spatial parameters, the target threshold is greater than or equal to a first reference threshold associated with the first set of spatial parameters.
As an embodiment, the above base station apparatus is characterized in that the first transmitter transmits a second control signal indicating K candidate thresholds;
wherein the target threshold is one of the K candidate thresholds, the K being a positive integer.
As an embodiment, the base station apparatus is characterized in that the target spatial parameter set is one of K candidate spatial parameter sets, the target threshold is one of K candidate thresholds, the K candidate spatial parameter sets are in one-to-one correspondence with the K candidate thresholds, and K is a positive integer greater than 1.
As an embodiment, the base station apparatus is characterized in that the first transmitter transmits K reference signal groups, the K candidate spatial parameter groups are respectively used for receiving the K reference signal groups, and the target spatial parameter group is one of the K candidate spatial parameter groups.
As an embodiment, the base station apparatus as described above is characterized in that the first transmitter transmits a second control signal indicating the K candidate thresholds.
As an embodiment, the base station device is characterized in that the second control signal indicates K difference values, and the K difference values are respectively equal to the difference values between the K candidate threshold values and the first reference threshold value.
As an embodiment, the base station apparatus described above is characterized in that the first control signal indicates the target threshold.
As an embodiment, the base station apparatus described above is characterized in that the first spatial parameter set is associated with the target spatial parameter set.
As an embodiment, the above base station apparatus is characterized in that the first transmitter transmits L reference signal groups before transmitting the first control signal, L being a positive integer greater than 1; wherein a first reference signal group is one of the L reference signal groups, the first control signal indicates the first reference signal group, the first spatial parameter set is associated with a spatial parameter set used for receiving the first reference signal group, and the target spatial parameter set is associated with the first reference signal group.
As an embodiment, the base station device as described above is characterized in that the first control signal indicates a maximum equivalent omnidirectional radiation power used for transmitting the first wireless signal, and the target threshold is associated with the maximum equivalent omnidirectional radiation power.
As an embodiment, the above base station apparatus is characterized in that the spatial coverage generated using the target spatial parameter set is larger than the spatial coverage generated using the first spatial parameter set.
As an embodiment, the base station apparatus is characterized in that the third receiver performs a second type of energy detection using a second set of spatial parameters before transmitting the first control signal; wherein the spatial coverage generated using the second set of spatial parameters is greater than the spatial coverage generated using the target set of spatial parameters.
As an example, compared with the prior art, the present application has the following main technical advantages:
improving the performance of directional transmissions and increasing the flexibility of the system while avoiding interference of uplink transmissions on ongoing transmissions in other directions.
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 a first control signal and a first wireless signal according to one embodiment of the present application;
FIG. 2 shows a schematic diagram of a network architecture according to 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 wireless transmission according to one embodiment of the present application;
FIG. 6 shows a schematic diagram of a first set of spatial parameters, a target threshold value and a first reference threshold value according to an embodiment of the present application;
FIG. 7 shows a schematic diagram of K candidate spatial parameter sets and K candidate thresholds according to an embodiment of the present application;
FIG. 8 shows a schematic diagram of K reference signal groups and a target spatial parameter set according to an embodiment of the present application;
FIG. 9 shows a schematic diagram of L reference signal groups and a first set of spatial parameters according to an embodiment of the present application;
FIG. 10 shows a schematic diagram of a second set of spatial parameters, a target set of spatial parameters, and a first set of spatial parameters according to an embodiment of the present application;
fig. 11 shows a schematic diagram of an antenna structure of a first type of communication node according to an embodiment of the application;
fig. 12 shows a block diagram of a processing device for use in a user equipment according to an embodiment of the present application;
fig. 13 shows a block diagram of a processing device for use in a base station according to an embodiment of the present application.
Detailed Description
The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.
Example 1
Embodiment 1 illustrates a flowchart of a first control signal and a first set of spatial parameters according to the present application, as shown in fig. 1. In fig. 1, each block represents a step. In embodiment 1, a user equipment in the present application receives a first control signal, where the first control signal indicates a target time-frequency resource and a first spatial parameter group used for transmitting a first radio signal; performing a first type of energy detection using the set of target spatial parameters; judging whether the first wireless signal can be sent on the target time-frequency resource or not by adopting a comparison result of the first type energy detection and a target threshold value; if the first wireless signal can be sent on the target time frequency resource, the first wireless signal is sent on the target time frequency resource by adopting the first space parameter group; if the first wireless signal cannot be sent on the target time-frequency resource, the first wireless signal is abandoned to be sent on the target time-frequency resource; wherein the target threshold is associated with the target set of spatial parameters, the target threshold is greater than or equal to a first reference threshold associated with the first set of spatial parameters.
As an embodiment, the above method is used for channel access over unlicensed spectrum.
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 an embodiment, the first Control signal is a radio signal generated by 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 a radio signal generated by an Uplink grant (DCI).
For one embodiment, one of the sets of spatial parameters includes parameters of a phase shifter acting on the radio frequency link.
As an embodiment, one of the sets of spatial parameters is used to generate one transmit beam.
As an embodiment, one of the sets of spatial parameters is used to generate one receive beam.
As an embodiment, one of the sets of spatial parameters includes beamforming coefficients used to generate transmit beams.
As an embodiment, one of the sets of spatial parameters includes beamforming coefficients used to generate receive beams.
As an embodiment, one of the sets of spatial parameters comprises parameters used for transmit spatial filtering.
As an embodiment, one of said sets of spatial parameters comprises parameters used for receive spatial filtering.
As an example, one of the sets of spatial parameters is used to directionally transmit a wireless signal.
As an example, one of the sets of spatial parameters is used for directionally receiving a wireless signal.
As an embodiment, one of the sets of spatial parameters corresponds to one multi-antenna transmission scheme.
As an embodiment, one of the sets of spatial parameters corresponds to one multi-antenna reception scheme.
As an embodiment, one of said sets of spatial parameters comprises at least one of a number of antenna elements, a state of an antenna element switch, a spacing between antenna elements and a coefficient of a phase shifter.
As an embodiment, the first set of spatial parameters is used to generate a transmit beam for transmitting the first wireless signal.
For one embodiment, the first set of spatial parameters acts on a phase shifter on a radio frequency link used to transmit the first wireless signal.
For one embodiment, the first set of spatial parameters includes parameters of a phase shifter acting on the radio frequency link.
As an embodiment, the first control signal indicates a Resource Element (RE) included in the target time-frequency Resource.
As an embodiment, the first control signal indicates RBs (Resource blocks) included in the target time-frequency Resource.
For one embodiment, the first control signal indicates a time offset of the target time-frequency resource relative to a time resource in which the first control signal is located.
As an embodiment, the first control signal indicates a symbol offset of the target time-frequency resource with respect to a time resource in which the first control signal is located.
As an embodiment, the target set of spatial parameters is used to generate receive beams for performing the first type of energy detection.
For one embodiment, the set of target spatial parameters acts on a phase shifter on a radio frequency link used to receive wireless signals to perform the first type of energy detection.
As one embodiment, the set of target spatial parameters includes parameters acting on a phase shifter.
As an embodiment, the equivalent channel generated using the first spatial parameter set and the equivalent channel generated using the target spatial parameter set are QCL (Quasi Co-located, class Co-located) spatially.
As an example, the large-scale parameters of the equivalent channel generated using the first set of spatial parameters may be used to infer the large-scale parameters of the equivalent channel generated using the target set of spatial parameters.
In one embodiment, the large-scale parameter includes at least one of delay spread, doppler shift, average gain, average delay, spatial transmit parameter, and spatial receive parameter.
As an embodiment, the first set of spatial parameters is used to infer the target set of spatial parameters.
As an example, one time of the energy detection means: the user equipment monitors received power over a time period within a given duration.
As an example, one time of the energy detection means: the user equipment monitors received energy over a time period within a given duration.
As an example, one time of the energy detection means: the user equipment sensing (Sense) for all radio 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 user equipment sensing (Sense) for all radio 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 Talk).
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).
As an embodiment, the target threshold and the first reference threshold are both power thresholds.
As an embodiment, the target threshold and the first reference threshold are both energy detection thresholds.
As one embodiment, the target threshold and the first reference threshold are in units of milliwatts.
As one embodiment, the unit of the target threshold and the first reference threshold is joule.
As an example, the unit of the target threshold and the first reference threshold is mdB.
As an embodiment, each time the first type energy detection uses the target spatial parameter set for receiving a wireless signal.
As an embodiment, the detection powers obtained by performing the first type of energy detection for multiple times respectively using the target spatial parameter group are used to determine whether the first wireless signal can be transmitted on the target time-frequency resource.
As an embodiment, the first type energy detection is performed for L1 times by using the target spatial parameter set, and L1 detection powers are obtained respectively, where L1 is a positive integer not less than 1.
As an embodiment, all of the L1 detection powers are lower than the target threshold, and the user equipment transmits the first radio signal on the target time-frequency resource using the first spatial parameter group.
As an embodiment, at least one of the L1 detection powers is higher than the target power threshold, and the user equipment abstains from transmitting the first radio signal on the target time-frequency resource.
As an embodiment, Q1 detection powers of the L1 detection powers are all lower than the target threshold, the user equipment transmits the first wireless signal on the target time-frequency resource using the first spatial parameter group, and Q1 is a positive integer.
As an embodiment, a number of the L1 detection powers that are below the target threshold is less than the Q1, the user equipment abstains from transmitting the first radio signal on the target time-frequency resource.
As an example, both the L1 and the Q1 are 1.
As one embodiment, the L1 is greater than the Q1.
As one example, the L1 is equal to the Q1.
As an embodiment, there exists a time slot in which the detected power obtained by performing the first type energy detection using the target spatial parameter set is lower than the target threshold, and the 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 of energy detection is performed on L2 consecutive slots, the L2 being a positive integer no less than 1.
As an embodiment, all of the L2 timeslots are the first type of idle timeslot, and the ue transmits the first radio signal on the target time-frequency resource using the first spatial parameter group.
As an embodiment, there is at least one idle time slot of the L2 time slots, which is not the first type, and the user equipment abandons the transmission of the first radio signal on the target time-frequency resource.
As an embodiment, Q2 slots of the L2 slots are the first type of free slots, the user equipment transmits the first radio signal on the target time-frequency resource using the first spatial parameter group, and Q2 is a positive integer.
As an embodiment, the number of the first class of idle slots of the L2 slots is less than the Q2, and the user equipment abstains from transmitting the first radio signal on the target time-frequency resource.
As an example, both the L2 and the Q2 are 1.
As one embodiment, the L2 is greater than the Q2.
As one example, the L2 is equal to the Q2.
As an embodiment, one delay period consists of Q1 consecutive slots, Q1 being a positive integer; there are K1 delay periods before the target time-frequency resource, the K1 being a positive integer.
As an example, the K1 is a random number.
As an embodiment, all the time slots within the K1 delay time periods are the first-class idle time slots, and the ue transmits the first radio signal on the target time-frequency resource using the first spatial parameter group.
As an embodiment, when there is at least one time slot within the K1 delay time periods that is not the first class of idle time slots, the ue abstains from transmitting the first radio signal on the target time-frequency resource.
As one embodiment, the target threshold is related to a beamwidth generated using the target set of spatial parameters.
As an embodiment, the target threshold corresponds to a beam width generated by using the target spatial parameter set.
As one embodiment, the wider the width of the beam generated using the target set of spatial parameters, the higher the target threshold.
As an embodiment, the target threshold is used to determine the target set of spatial parameters.
As an embodiment, the first reference threshold is an energy detection threshold associated with assuming that the first set of spatial parameters is used for performing energy detection.
As an embodiment, the first reference threshold is an energy detection threshold associated with assuming that the first spatial parameter set generating receive beams is used to perform energy detection.
As an embodiment, the first reference threshold is an energy detection threshold associated with assuming that the same spatial coverage of the transmit beams generated spatially by the first set of spatial parameters is used to perform energy detection.
As an embodiment, the target threshold is equal to the first reference threshold.
As an embodiment, the target threshold is greater than the first reference threshold.
As an embodiment, the first set of spatial parameters is used to determine the target set of spatial parameters.
As an embodiment, the target set of spatial parameters is associated to the first set of spatial parameters.
As an embodiment, the first spatial parameter set and the target spatial parameter set respectively include a first vector and a target vector, a correlation of the first vector and the target vector is 1, and the first threshold is equal to the first reference threshold.
As an embodiment, the first spatial parameter set and the target spatial parameter set include a first vector and a target vector, respectively, a correlation of the first vector and the target vector is less than 1, and the first threshold is less than the first reference threshold.
As an embodiment, K1 candidate thresholds and K1 candidate spatial parameter sets have a one-to-one correspondence, the target spatial parameter set belongs to one of the K1 candidate spatial parameter sets, the first threshold is one of the K1 candidate thresholds corresponding to the target spatial parameter set, and any one of the K1 candidate spatial parameter sets includes one or more candidate spatial parameter sets.
As an embodiment, the target spatial parameter set is one of K candidate spatial parameter sets, the target threshold is one of K candidate thresholds, the K candidate spatial parameter sets correspond to the K candidate thresholds one to one, and K is a positive integer greater than 1.
As an embodiment, the ue receives K reference signal groups, the K candidate spatial parameter sets are used for receiving the K reference signal groups respectively, and the target spatial parameter set is one of the K candidate spatial parameter sets.
As an embodiment, the ue receives a second control signal, and receives a second control signal, where the second control signal indicates the K candidate thresholds.
As an embodiment, the second control signal is a radio signal generated by one DCI.
As an embodiment, the second control signal is cell common.
As one embodiment, the second control signal is directed to the user equipment.
As an embodiment, the second control signal is higher layer control signaling.
As an embodiment, the second Control signal is RRC (Radio Resource Control) signaling.
As an embodiment, the second control signal indicates K difference values, which are equal to the difference values between the K candidate thresholds and the first reference threshold, respectively.
As one embodiment, the first control signal indicates a difference of the first reference threshold to the first threshold; the difference from the first reference threshold to the first threshold is one of the K differences, or 0.
As an embodiment, if the difference from the first reference threshold to the first threshold is 0, the first threshold is equal to the first reference threshold.
As an embodiment, the K difference values and the first reference threshold are used to infer the K candidate thresholds.
As one embodiment, the first control signal is indicative of the target threshold.
As one embodiment, the first control signal indicates the target threshold value from the K candidate threshold values.
As an embodiment, the first control signal indicates the target threshold from P1 candidate thresholds, the P1 candidate thresholds being determined by default, the P1 being a positive integer greater than 1.
As an embodiment, the first set of spatial parameters is associated with the target set of spatial parameters.
As an embodiment, the user equipment determines the target set of spatial parameters by the first set of spatial parameters.
As an embodiment, the association of the first set of spatial parameters with the target set of spatial parameters is configured by a base station.
As an embodiment, the first spatial parameter set corresponds to P2 candidate spatial parameter sets, the target spatial parameter set is one of the P2 candidate spatial parameter sets, and the P2 is a positive integer greater than 1.
As an embodiment, the maximum gain direction of the receive beam generated using the target set of spatial parameters is aligned with the maximum gain direction of the transmit beam generated using the first set of spatial parameters.
As an embodiment, the spatial coverage of the receive beams generated with the target set of spatial parameters is greater than the spatial coverage of the transmit beams generated with the first set of spatial parameters.
As an embodiment, the spatial coverage of the receive beams generated with the target set of spatial parameters covers the spatial coverage of the transmit beams generated with the first set of spatial parameters.
As an embodiment, the receive angular coverage of the receive beams generated using the target set of spatial parameters is greater than the transmit angular coverage of the transmit beams generated using the first set of spatial parameters.
As an embodiment, the target spatial parameter set is one of K candidate spatial parameter sets, the K candidate spatial parameter sets are in one-to-one correspondence with K candidate thresholds, and the first threshold is one of the K candidate thresholds corresponding to the target spatial parameter set.
As an embodiment, the first spatial parameter set is one of the K candidate spatial parameter sets, and the first reference threshold is one of the K candidate thresholds corresponding to the first spatial parameter set.
As an embodiment, the method is characterized by comprising:
prior to receiving the first control signal, receiving L sets of reference signals, L being a positive integer greater than 1;
wherein a first reference signal group is one of the L reference signal groups, the first control signal indicates the first reference signal group, the first spatial parameter set is associated with a spatial parameter set used for receiving the first reference signal group, and the target spatial parameter set is associated with the first reference signal group.
As an embodiment, the reference signals in the L reference signal groups are downlink reference signals.
As an embodiment, the Reference signals in the L 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 L sets of reference signals are SS (Sychronization 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 one embodiment, the first control signal indicates an identity of the first reference signal group.
As an embodiment, the first set of spatial parameters comprises spatial parameters used for receiving the first set of reference signals.
As an embodiment, the spatial parameters in the first set of spatial parameters correspond one-to-one to the spatial parameters used for receiving the first set of reference signals.
As an embodiment, the spatial coverage of the receive beams used for receiving the first set of reference signals is the same as the spatial coverage of the transmit beams generated with the first set of spatial parameters.
As an embodiment, the set of spatial parameters used for receiving the first set of reference signals is used for inferring the first set of spatial parameters.
As an embodiment, the set of spatial parameters used to receive the first set of reference signals is used to infer the target set of spatial parameters.
As an embodiment, the set of spatial parameters used for receiving the first set of reference signals is used for determining the target set of spatial parameters.
As an embodiment, the spatial parameter sets used for receiving the first reference signal group are used for determining the P2 candidate spatial parameter sets.
As an embodiment, the user equipment receives M reference signal groups before receiving the first control signal, the M being a positive integer greater than 1; wherein a target reference signal group is one of the M reference signal groups, the target set of spatial reception parameters being used for receiving the target reference signal group, the target reference signal group being associated with the first reference signal group.
For one embodiment, the target set of spatial receive parameters is used to generate receive beams that receive the target set of reference signals.
As an embodiment, the first control signal indicates the first reference signal group from which the user equipment determines the target reference signal group.
As an embodiment, the reference signals in the M reference signal groups are downlink reference signals.
As an embodiment, the Reference signals in the M Reference Signal groups are CSI-RS (Channel State Information Reference signals).
As an embodiment, the first control signal indicates a maximum equivalent omnidirectional radiation power used for transmitting the first wireless signal, and the target threshold is associated with the maximum equivalent omnidirectional radiation power.
As an embodiment, the equivalent omni-directional radiation power used to transmit the first wireless signal is less than the maximum equivalent omni-directional radiation power.
As an embodiment, the sum of the target threshold and the maximum equivalent omni-directional radiation power is a fixed value.
As an embodiment, the fixed value is determined by default.
As an embodiment, the fixed value is base station configured.
As an embodiment, the value of the target threshold and the value of the maximum equivalent omnidirectional radiation power are in a one-to-one correspondence.
As an embodiment, the maximum equivalent omni-directional radiated power is used by the user equipment to determine the target threshold.
As an embodiment, the first control signal indicates a maximum equivalent omni-directional radiation power used to transmit the first wireless signal from among P3 maximum equivalent omni-directional radiation power candidate values, the P3 being a positive integer greater than 1.
As an embodiment, the P3 candidate maximum equivalent omni directional radiation power candidate values are configured by the base station.
As an embodiment, the P3 candidate maximum equivalent omni directional radiation power candidate values are determined by default.
As an embodiment, the maximum equivalent omnidirectional radiated power is used to determine the target set of spatial parameters.
As an embodiment, the value of the maximum equivalent omnidirectional radiation power and the value of the beam width generated by using the target spatial parameter set are in a one-to-one correspondence.
As an embodiment, the spatial coverage generated using the target set of spatial parameters is larger than the spatial coverage generated using the first set of spatial parameters.
As an embodiment, the sender of the first control signal performs a second type of energy detection using a second set of spatial parameters before sending the first control signal, and the spatial coverage generated using the second set of spatial parameters is larger than the spatial coverage generated using the target set of spatial parameters.
As an embodiment, each time the second type of energy detection uses the second spatial parameter set for receiving a wireless signal.
As an embodiment, the detected powers obtained by performing the second type of energy detection respectively multiple times with the second spatial parameter group are used to determine whether the first control signal can be transmitted.
As an embodiment, performing the second type of energy detection with the second spatial parameter set respectively obtains M1 detection powers M1 times in total, where M1 is a positive integer not less than 1.
As an embodiment, the M1 detected powers are all below the target threshold, and the sender of the first control signal sends the first control signal.
As an embodiment, at least one of the M1 detected powers is higher than the target power threshold, and the sender of the first control signal abandons sending the first control signal.
As an embodiment, N1 detection powers of the M1 detection powers are all below the target threshold, a sender of the first control signal sends the first control signal, and N1 is a positive integer.
As an embodiment, a number of the M1 detected powers that are below the target threshold is less than the N1, and a sender of the first control signal relinquishes sending the first control signal.
As an example, both the M1 and the N1 are 1.
As one embodiment, the M1 is greater than the N1.
As one embodiment, the M1 is equal to the N1.
As an embodiment, there exists a time slot in which the detected power obtained by performing the second type of energy detection using the second spatial parameter set is lower than the target threshold, and the time slot is referred to as a second type of 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 second type of energy detection is performed on M2 consecutive slots, the M2 being a positive integer no less than 1.
As an embodiment, the M2 time slots are all idle time slots of the second type, and the sender of the first control signal sends the first control signal.
As an embodiment, there is at least one idle time slot of the second type out of the M2 time slots, and the sender of the first control signal abandons sending the first control signal.
As an embodiment, N2 slots of the M2 slots are idle slots of the second type, a sender of the first control signal sends the first control signal, and N2 is a positive integer.
As an embodiment, the number of the second type of free slots of the M2 slots is less than the N2, the sender of the first control signal relinquishes sending the first control signal.
As an example, both the M2 and the N2 are 1.
As one embodiment, the M2 is greater than the N2.
As one embodiment, the M2 is equal to the N2.
As an embodiment, one delay period consists of N1 consecutive slots, the N1 being a positive integer; there are K1 delay periods before the target time-frequency resource, the K1 being a positive integer.
As an example, the K1 is a random number.
As an embodiment, all the time slots within the K1 delay periods are idle time slots of the second type, and the sender of the first control signal sends the first control signal.
As an embodiment, at least one time slot existing in the K1 delay time periods is not the second type of idle time slot, and the sender of the first control signal abandons sending the first control signal.
As an embodiment, the spatial coverage generated using the second set of spatial parameters covers the spatial coverage generated using the target set of spatial parameters.
In one embodiment, the second set of spatial parameters is used to generate omni-directional reception and the target set of spatial parameters is used to generate directional reception beams.
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 NR 5G, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced) systems. The NR 5G 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 cores)/5G-CNs (5G-Core networks) 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 b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (point of transmission reception), or some other suitable terminology. The gNB203 provides an access point for the UE201 to the EPC/5G-CN 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, 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 land 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 connects to the EPC/5G-CN210 through the S1/NG interface. The EPC/5G-CN210 includes an MME/AMF/UPF211, other MMEs/AMF/UPF 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-CN 210. 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-GW 213. The P-GW213 provides UE IP address allocation 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 UE201 corresponds to a user equipment in the present application.
As an embodiment, the gNB203 corresponds to a base station 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 PHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY 301. 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 an RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3). 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.
As an example, the radio protocol architecture in fig. 3 is applicable to the user equipment in the present application.
As an example, the radio protocol architecture in fig. 3 is applicable to the base station in the present application.
As an example, the first control signal in this application is generated in the PHY 301.
As an embodiment, the first control signal in this application is generated in the RRC sublayer 306.
As an example, the K reference signal groups in the present application are generated in the PHY 301.
For one embodiment, L reference signal groups in the present application are generated in the PHY 301.
As an embodiment, the second control signal in this application is generated in the PHY 301.
As an embodiment, the second control 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.
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 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 associated with 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 the L2 layer protocol 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 and transmitting them 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 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 associated with the user equipment (UE450) may include:
receiver 456 is configured to convert radio frequency signals received via antenna 460 into baseband signals for provision to MIMO detector 472; analog receive beamforming is processed in the receiver 456;
a MIMO detector 472 for MIMO detection of the signals 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, and 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 the L2 layer protocol 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 associated with the user equipment (UE450) 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 the L2 layer protocol 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 transmit 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, SRS (Sounding Reference Signal)) 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 transmissions, processing associated with a base station device (410) may include:
receiver 416 is used to convert the radio frequency signals received through antenna 420 into baseband signals for MIMO detector 442; analog receive beamforming is processed in receiver 416;
a MIMO detector 442 for MIMO detecting signals received from receiver 416, and providing MIMO detected symbols to receive processor 442;
MIMO detector 442 outputs analog receive beamforming vectors to receiver 416;
receive processor 412 performs various signal receive processing functions for the L1 layer (i.e., the physical layer) including decoding, deinterleaving, descrambling, demodulation, and physical layer control signaling extraction, among others;
controller/processor 440 receives the bitstream output by receive processor 412, 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 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 a first control signal indicating a target time-frequency resource and a first set of spatial parameters used for transmitting a first wireless signal; performing a first type of energy detection using the set of target spatial parameters; judging whether the first wireless signal can be sent on the target time-frequency resource or not by adopting a comparison result of the first type energy detection and a target threshold value; if the first wireless signal can be sent on the target time frequency resource, the first wireless signal is sent on the target time frequency resource by adopting the first space parameter group; if the first wireless signal cannot be sent on the target time-frequency resource, the first wireless signal is abandoned to be sent on the target time-frequency resource; wherein the target threshold is associated with the target set of spatial parameters, the target threshold is greater than or equal to a first reference threshold associated with the first set of spatial parameters.
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 a first control signal indicating a target time-frequency resource and a first set of spatial parameters used for transmitting a first wireless signal; performing a first type of energy detection using the set of target spatial parameters; judging whether the first wireless signal can be sent on the target time-frequency resource or not by adopting a comparison result of the first type energy detection and a target threshold value; if the first wireless signal can be sent on the target time frequency resource, the first wireless signal is sent on the target time frequency resource by adopting the first space parameter group; if the first wireless signal cannot be sent on the target time-frequency resource, the first wireless signal is abandoned to be sent on the target time-frequency resource; wherein the target threshold is associated with the target set of spatial parameters, the target threshold is greater than or equal to a first reference threshold associated with the first set of spatial parameters.
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 a first control signal indicating a target time-frequency resource and a first set of spatial parameters used for transmitting a first wireless signal; monitoring the first wireless signal on the target time-frequency resource; the receiver of the first control signal performs a first type of energy detection by using a target spatial parameter set, and determines whether the first wireless signal can be transmitted on the target time-frequency resource by using a comparison result between a result of the first type of energy detection and a target threshold, where the target threshold is associated with the target spatial parameter set, the target threshold is greater than or equal to a first reference threshold, and the first reference threshold is associated with the first spatial parameter set.
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 a first control signal indicating a target time-frequency resource and a first set of spatial parameters used for transmitting a first wireless signal; monitoring the first wireless signal on the target time-frequency resource; the receiver of the first control signal performs a first type of energy detection by using a target spatial parameter set, and determines whether the first wireless signal can be transmitted on the target time-frequency resource by using a comparison result between a result of the first type of energy detection and a target threshold, where the target threshold is associated with the target spatial parameter set, the target threshold is greater than or equal to a first reference threshold, and the first reference threshold is associated with the first spatial parameter set.
As an embodiment, the UE450 corresponds to a user equipment in the present application.
As an embodiment, the gNB410 corresponds to a base station in the present application.
For one embodiment, at least the first three of receiver 456, MIMO detector 472, receive processor 452, and controller/processor 490 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 an 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 configured to receive the K sets of reference signals in the present application.
For one embodiment, receiver 456, MIMO detector 472 and receive processor 452 are configured to receive the second control signal in this application.
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 the L sets of reference signals 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 on a target time-frequency resource.
For one embodiment, the transmit processor 415, the MIMO transmit processor 441, and the transmitter 416 are configured to transmit the K sets of reference signals in the present application.
For one embodiment, the transmit processor 415, the MIMO transmit processor 441, and the transmitter 416 are configured to transmit the L sets of reference signals in the present 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 second control signals 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.
Example 5
Embodiment 5 illustrates a flow chart of wireless transmission, as shown in fig. 5. In fig. 5, a base station communicates with a user equipment. The steps identified in blocks F1, F2, F3, and F4 are optional and the steps identified in block F5 may not be performed.
For theBase station N1In step S11, a second control signal is transmitted, K reference signal groups are transmitted in step S12, L reference signal groups are transmitted in step S13, a second type of energy detection is performed in step S14, a first control signal is transmitted in step S15, and a first radio signal is monitored on a target time-frequency resource in step S16.
For theUser equipment U2Receiving the second control signal in step S21, receiving the K reference signal groups in step S22, receiving the L reference signal groups in step S23, receiving the first control signal in step S24, performing the first type of energy detection in step S25, determining whether the first wireless signal can be transmitted on the target time-frequency resource in step S26, and transmitting the first wireless signal on the target time-frequency resource in step S27Number (n).
In embodiment 5, the first control signal indicates a U2 target time-frequency resource and a first set of spatial parameters used for transmitting the first wireless signal; u2 performs a first type of energy detection using the set of target spatial parameters; u2 judging whether the first wireless signal can be sent on the target time frequency resource by adopting the comparison result of the first type energy detection result and a target threshold value; if the U2 determines that the first wireless signal can be transmitted on the target time-frequency resource, the first wireless signal is transmitted on the target time-frequency resource by using the first spatial parameter group; if the first wireless signal cannot be sent on the target time-frequency resource, the first wireless signal is abandoned to be sent on the target time-frequency resource; the target threshold is associated with the target set of spatial parameters, the target threshold is greater than or equal to a first reference threshold associated with the first set of spatial parameters.
As an embodiment, the target spatial parameter set is one of K candidate spatial parameter sets, the target threshold is one of K candidate thresholds, the K candidate spatial parameter sets correspond to the K candidate thresholds one to one, and K is a positive integer greater than 1.
As an embodiment, the step in block F2 exists, the K candidate spatial parameter sets are used for receiving the K reference signal groups respectively, and the target spatial parameter set is one of the K candidate spatial parameter sets.
As one embodiment, the step in block F1 exists, the second control signal indicating the K candidate thresholds.
As an embodiment, the second control signal indicates K difference values, which are equal to the difference values between the K candidate thresholds and the first reference threshold, respectively.
As an embodiment, the step in block F3 exists, the L being a positive integer greater than 1, a first reference signal group being one of the L reference signal groups, the first control signal indicating the first reference signal group, the first spatial parameter group being associated with a spatial parameter group used for receiving the first reference signal group, the target spatial parameter group being associated with the first reference signal group.
As an embodiment, the first control signal indicates a maximum equivalent omnidirectional radiation power used for transmitting the first wireless signal, and the target threshold is associated with the maximum equivalent omnidirectional radiation power.
As an embodiment, the spatial coverage generated using the target set of spatial parameters is larger than the spatial coverage generated using the first set of spatial parameters.
As an embodiment, the sender of the first control signal performs a second type of energy detection using a second set of spatial parameters before sending the first control signal, and the spatial coverage generated using the second set of spatial parameters is larger than the spatial coverage generated using the target set of spatial parameters.
Example 6
Embodiment 6 illustrates a first spatial parameter set, a target threshold value and a first reference threshold value, as shown in fig. 6.
In embodiment 6, the first spatial parameter set in the present application is used to generate the reference receive beam in fig. 6, and the target spatial parameter set in the present application is used to generate the target receive beam in fig. 6, which detects the received wireless signal at the first type of energy in the present application. The first reference threshold in this application is an energy detection threshold used for determining when the reference receiving beam is used for energy detection to perform uplink channel access. The target threshold in the present application is an energy detection threshold for determining when the target receiving beam is used for energy detection to perform uplink channel access. The beamwidth of the reference receive beam is less than the beamwidth of the target receive beam. The receive angle range of the target receive beam covers the receive angle range of the reference receive beam. The target threshold is greater than the first reference threshold.
Example 7
Embodiment 7 illustrates K candidate spatial parameter sets and K candidate thresholds, as shown in fig. 7.
In embodiment 7, the K candidate spatial parameter sets in the present application are used to generate K candidate reception beams, i.e., candidate reception beams #1- # K, respectively. The beamwidths of the K candidate receive beams are different. The K candidate thresholds in the present application correspond one-to-one to the K candidate receive beams. The target spatial parameter set in this application is used to generate a target receive beam, which is one of the K candidate receive beams. The target threshold in this application is one of the K candidate thresholds. The first set of spatial parameters in this application is used to generate a reference receive beam, which is one of the K candidate receive beams. The first reference threshold is the smallest of the K candidate thresholds. The K candidate receive beams and their corresponding candidate thresholds are the candidate receive beams and corresponding energy detection thresholds used to perform energy detection for uplink channel access.
As an embodiment, the larger the candidate threshold corresponding to the beam with the wider beam width among the K candidate reception beams is.
Example 8
Example 8 illustrates K sets of reference signals and sets of target spatial parameters, as shown in fig. 8.
In embodiment 8, K reception beams, i.e., reception beams #1- # K, are used to receive K reference signal groups, i.e., reference signal groups #1- # K, respectively, in the present application. The K candidate sets of spatial parameters in this application are used to generate the K receive beams, respectively. The target spatial parameter set is one of the K candidate spatial parameter sets. The receiving beam generated by adopting the target space parameter group is one of the K receiving beams and is used for receiving one of the K reference signal groups.
Example 9
Embodiment 9 illustrates L reference signal groups and a first spatial parameter group, as shown in fig. 9.
In embodiment 9, L reception beams, i.e., reception beams #1- # L, are used to receive L reference signal groups, i.e., reference signal groups #1- # L, respectively, in the present application. The first set of spatial parameters in this application is used to generate one of the L receive beams. The receive beams generated by the first set of spatial parameters are used to receive a first set of reference signals in the present application. The first reference signal group is one of the L reference signal groups. The first set of spatial parameters is also used to generate a transmission beam for transmitting the first radio signal in the present application.
Example 10
Embodiment 10 illustrates the second set of spatial parameters, the target set of spatial parameters, and the first set of spatial parameters, as shown in fig. 10.
In embodiment 10, a base station first performs omni-directional LBT by using a second spatial parameter set in the present application, a first control signal in the present application is sent after the omni-directional LBT, a user equipment first generates a target receiving beam and a target threshold corresponding to the target receiving beam by using a target spatial parameter set associated with a first spatial parameter set in the present application after receiving the first control signal to perform uplink channel access LBT, and generates a first transmitting beam by using the first spatial parameter set in the present application after the uplink channel access is successful, and sends a first radio signal in the present application on a target time-frequency resource indicated by the first control signal. The target receive beam has a beamwidth greater than the first transmit beam beamwidth.
Example 11
Embodiment 11 illustrates an antenna structure of a user equipment, as shown in fig. 11. As shown in fig. 11, 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, any one of the M radio frequency chains supports a bandwidth not exceeding a bandwidth of a sub-band in which the first type communication node is configured.
As an embodiment, M1 radio frequency chains of the M radio frequency chains are superimposed through Antenna Virtualization (Virtualization) to generate an Antenna Port (Antenna Port), the M1 radio frequency chains are respectively connected to M1 Antenna groups, and each Antenna group of 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. The mapping coefficients of the antennas included in any one of the M1 antenna groups to the antenna ports constitute 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. The corresponding analog beamforming vectors of the M1 antenna groups are arranged diagonally to form an analog beamforming matrix for the antenna ports. The mapping coefficients of the M1 antenna groups to the antenna ports constitute digital beamforming vectors for the antenna ports.
As an embodiment, the spatial parameter set in the present application includes at least one of a state of an antenna switch, a coefficient of a phase shifter, and an antenna pitch.
As an example, the set of spatial parameters in this application includes beamforming coefficients on the radio link.
As an example, the set of spatial parameters in this application includes beamforming coefficients on a baseband link.
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 one 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 for this receive beam. The corresponding analog beamforming vectors of the M2 antenna groups are arranged diagonally to form an analog beamforming matrix for the receive beams. 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 example, the M2 radio frequency chains are QCL.
As an embodiment, the sum of the number of layers configured by the user equipment on each of the parallel subbands is less than or equal to M.
As an embodiment, the sum of the number of antenna ports configured by the user equipment 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, for each of the parallel subbands, the layer-to-antenna port mapping is default (i.e., not explicitly configured).
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 12
Embodiment 12 is a block diagram illustrating a configuration of a processing device in a user equipment, as shown in fig. 12. In fig. 12, the ue processing apparatus 1200 is mainly composed of a first receiver 1201, a second receiver 1202, a first processor 1203 and a third transmitter 1204.
For one embodiment, the first receiver 1201 includes at least the first three of a receiver 456, a MIMO detector 472, a receive processor 452, and a controller/processor 490.
For one embodiment, second receiver 1202 includes a receiver 456, a MIMO detector 472, and a receive processor 452.
For one embodiment, the first processing machine 1203 includes a receive processor 452.
For one embodiment, third transmitter 1204 includes at least the first three of a transmit processor 455, a MIMO transmit processor 471, a transmitter 456, and a controller/processor 490.
First receiver 1201: a first control signal is received, the first control signal indicating a target time-frequency resource and a first set of spatial parameters used for transmitting a first wireless signal.
A second receiver 1202 for performing a first type of energy detection using a target set of spatial parameters;
-a first processor 1203, configured to determine whether the first wireless signal can be transmitted on the target time-frequency resource by using a comparison result between a result of the first type of energy detection and a target threshold; if the first wireless signal cannot be sent on the target time-frequency resource, the first wireless signal is abandoned to be sent on the target time-frequency resource;
-a third transmitter 1204, if it is determined that the first wireless signal can be transmitted on the target time-frequency resource, the third transmitter 1204 transmitting the first wireless signal on the target time-frequency resource using the first set of spatial parameters;
as an embodiment, the target threshold is associated with the target set of spatial parameters, the target threshold is greater than or equal to a first reference threshold associated with the first set of spatial parameters.
As an embodiment, the ue is characterized in that the target spatial parameter set is one of K candidate spatial parameter sets, the target threshold is one of K candidate thresholds, the K candidate spatial parameter sets are in one-to-one correspondence with the K candidate thresholds, and K is a positive integer greater than 1.
As an embodiment, the first receiver 1201 receives K reference signal sets, the K candidate spatial parameter sets are used to receive the K reference signal sets respectively, and the target spatial parameter set is one of the K candidate spatial parameter sets.
For one embodiment, the first receiver 1201 receives a second control signal indicating the K candidate thresholds.
As an embodiment, the second control signal indicates K difference values, which are equal to the difference values between the K candidate thresholds and the first reference threshold, respectively.
As one embodiment, the first control signal is indicative of the target threshold.
As an embodiment, the first set of spatial parameters is associated with the target set of spatial parameters.
For one embodiment, the first receiver 1201 receives L sets of reference signals before receiving the first control signal, where L is a positive integer greater than 1; wherein a first reference signal group is one of the L reference signal groups, the first control signal indicates the first reference signal group, the first spatial parameter set is associated with a spatial parameter set used for receiving the first reference signal group, and the target spatial parameter set is associated with the first reference signal group.
As an embodiment, the first control signal indicates a maximum equivalent omnidirectional radiation power used for transmitting the first wireless signal, and the target threshold is associated with the maximum equivalent omnidirectional radiation power.
As an embodiment, the spatial coverage generated using the target set of spatial parameters is larger than the spatial coverage generated using the first set of spatial parameters.
As an embodiment, the sender of the first control signal performs a second type of energy detection using a second set of spatial parameters before sending the first control signal, and the spatial coverage generated using the second set of spatial parameters is larger than the spatial coverage generated using the target set of spatial parameters.
Example 13
Embodiment 13 is a block diagram illustrating a processing apparatus in a base station, as shown in fig. 13. In fig. 13, a base station apparatus processing device 1300 mainly includes a first transmitter 1301 and a third receiver 1302.
For one embodiment, first transmitter 1301 includes at least the first three of transmit processor 415, MIMO transmit processor 441, transmitter 416, and controller/processor 440.
For one embodiment, third receiver 1302 comprises at least the first three of receiver 416, MIMO detector 442, receive processor 412, and controller/processor 440.
First transmitter 1301: transmitting a first control signal indicating a target time-frequency resource and a first set of spatial parameters used for transmitting a first wireless signal.
Third receiver 1302: monitoring the first wireless signal on the target time-frequency resource.
As an embodiment, a receiver of the first control signal performs a first type energy detection using a target spatial parameter set, and determines whether the first wireless signal can be transmitted on the target time-frequency resource using a comparison result between a result of the first type energy detection and a target threshold; the target threshold is associated with the target set of spatial parameters, the target threshold is greater than or equal to a first reference threshold associated with the first set of spatial parameters
As an embodiment, the above base station apparatus is characterized in that the first transmitter transmits a second control signal indicating K candidate thresholds;
wherein the target threshold is one of the K candidate thresholds, the K being a positive integer.
As an embodiment, the base station apparatus is characterized in that the target spatial parameter set is one of K candidate spatial parameter sets, the target threshold is one of K candidate thresholds, the K candidate spatial parameter sets are in one-to-one correspondence with the K candidate thresholds, and K is a positive integer greater than 1.
As an embodiment, the first transmitter 1301 transmits K reference signal groups, the K candidate spatial parameter groups are respectively used for receiving the K reference signal groups, and the target spatial parameter group is one of the K candidate spatial parameter groups.
For one embodiment, the first transmitter 1301 transmits a second control signal indicating the K candidate thresholds.
As an embodiment, the second control signal indicates K difference values, which are equal to the difference values between the K candidate thresholds and the first reference threshold, respectively.
As one embodiment, the first control signal is indicative of the target threshold.
As an embodiment, the first set of spatial parameters is associated with the target set of spatial parameters.
As an example, the first transmitter 1301 transmits L reference signal groups before transmitting the first control signal, where L is a positive integer greater than 1; wherein a first reference signal group is one of the L reference signal groups, the first control signal indicates the first reference signal group, the first spatial parameter set is associated with a spatial parameter set used for receiving the first reference signal group, and the target spatial parameter set is associated with the first reference signal group.
As an embodiment, the first control signal indicates a maximum equivalent omnidirectional radiation power used for transmitting the first wireless signal, and the target threshold is associated with the maximum equivalent omnidirectional radiation power.
As an embodiment, the spatial coverage generated using the target set of spatial parameters is larger than the spatial coverage generated using the first set of spatial parameters.
For one embodiment, the third receiver 1302 performs a second type of energy detection using a second set of spatial parameters before transmitting the first control signal; wherein the spatial coverage generated using the second set of spatial parameters is greater than the spatial coverage generated using the target set of spatial parameters.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The 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 and 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 (10)

1. A method in a user equipment used for wireless communication, comprising:
receiving a first control signal indicating a target time-frequency resource and a first set of spatial parameters used for transmitting a first wireless signal;
performing a first type of energy detection using the set of target spatial parameters;
judging whether the first wireless signal can be sent on the target time-frequency resource or not by adopting a comparison result of the first type energy detection and a target threshold value;
if the first wireless signal can be sent on the target time frequency resource, the first wireless signal is sent on the target time frequency resource by adopting the first space parameter group;
if the first wireless signal cannot be sent on the target time-frequency resource, the first wireless signal is abandoned to be sent on the target time-frequency resource;
wherein the target threshold is associated with the target set of spatial parameters, the target threshold being greater than or equal to a first reference threshold associated with the first set of spatial parameters; the first control signal is physical layer control signaling.
2. The method according to claim 1, wherein the target spatial parameter set is one of K candidate spatial parameter sets, the target threshold is one of K candidate thresholds, the K candidate spatial parameter sets are in one-to-one correspondence with the K candidate thresholds, and K is a positive integer greater than 1.
3. The method according to claim 1 or 2, characterized by comprising:
receiving K reference signal groups, the K candidate spatial parameter sets being respectively used for receiving the K reference signal groups, the target spatial parameter set being one of the K candidate spatial parameter sets.
4. A method according to any one of claims 1 to 3, characterized by comprising:
prior to receiving the first control signal, receiving L sets of reference signals, L being a positive integer greater than 1;
wherein a first reference signal group is one of the L reference signal groups, the first control signal indicates the first reference signal group, the first spatial parameter set is associated with a spatial parameter set used for receiving the first reference signal group, and the target spatial parameter set is associated with the first reference signal group.
5. The method of any of claims 1 to 4, wherein the first control signal indicates a maximum equivalent omnidirectional radiation power used for transmitting the first wireless signal, and wherein the target threshold is associated with the maximum equivalent omnidirectional radiation power.
6. The method according to any of claims 1 to 5, wherein the spatial coverage generated using the target set of spatial parameters is larger than the spatial coverage generated using the first set of spatial parameters.
7. The method according to any of claims 1 to 6, wherein a sender of the first control signal performs a second type of energy detection using a second set of spatial parameters before sending the first control signal, the spatial coverage generated using the second set of spatial parameters being larger than the spatial coverage generated using the target set of spatial parameters.
8. A method in a base station used for wireless communication, comprising:
transmitting a first control signal indicating a target time-frequency resource and a first set of spatial parameters used for transmitting a first wireless signal;
monitoring the first wireless signal on the target time-frequency resource;
a receiver of the first control signal performs first-class energy detection by using a target spatial parameter group, and determines whether the first wireless signal can be transmitted on the target time-frequency resource by using a comparison result between a result of the first-class energy detection and a target threshold, where the target threshold is associated with the target spatial parameter group, the target threshold is greater than or equal to a first reference threshold, and the first reference threshold is associated with the first spatial parameter group; the first control signal is physical layer control signaling.
9. A user equipment configured for wireless communication, comprising:
a first receiver module to receive a first control signal indicating a target time-frequency resource and a first set of spatial parameters used to transmit a first wireless signal;
a second receiver module that performs a first type of energy detection using the set of target spatial parameters;
the first processor module is used for judging whether the first wireless signal can be sent on the target time-frequency resource or not by adopting the comparison result of the first type energy detection and a target threshold value; if the first wireless signal cannot be sent on the target time-frequency resource, the first wireless signal is abandoned to be sent on the target time-frequency resource;
a third transmitter module, configured to transmit the first wireless signal on the target time-frequency resource by using the first spatial parameter group if it is determined that the first wireless signal can be transmitted on the target time-frequency resource;
wherein the target threshold is associated with the target set of spatial parameters, the target threshold being greater than or equal to a first reference threshold associated with the first set of spatial parameters; the first control signal is physical layer control signaling.
10. A base station apparatus used for wireless communication, characterized by comprising:
a first transmitter module to transmit a first control signal indicating a target time-frequency resource and a first set of spatial parameters used to transmit a first wireless signal;
a third receiver module to monitor the first wireless signal on the target time-frequency resource;
a receiver of the first control signal adopts a target space parameter group to execute first-class energy detection, and judges whether the first wireless signal can be sent on the target time-frequency resource or not by adopting a comparison result of a first-class energy detection result and a target threshold value; the target threshold is associated with the target set of spatial parameters, the target threshold being greater than or equal to a first reference threshold associated with the first set of spatial parameters; the first control signal is physical layer control signaling.
CN202110571922.8A 2018-02-01 2018-02-01 Method and device for wireless communication in base station and user equipment Pending CN113316256A (en)

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