CN111108697B - Method and device in communication node for wireless communication - Google Patents

Method and device in communication node for wireless communication Download PDF

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Publication number
CN111108697B
CN111108697B CN201780094764.3A CN201780094764A CN111108697B CN 111108697 B CN111108697 B CN 111108697B CN 201780094764 A CN201780094764 A CN 201780094764A CN 111108697 B CN111108697 B CN 111108697B
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conditions
channel
power threshold
spatial transmission
power
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CN111108697A (en
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陈晋辉
张晓博
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Shanghai Langbo Communication Technology Co Ltd
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Nantong Langheng Communication Technology Co ltd
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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

A method and arrangement in a communication node for wireless communication is disclosed. The communication node sequentially executes energy detection on a first channel, judges a first condition set and a second condition set and sends a first wireless signal; the first and second power thresholds are used to determine whether the first and second condition sets are satisfied; whether the first set of conditions is satisfied or the second set of conditions is satisfied relates to transmission related to the communication node multi-antenna. The method and the device adopt different power thresholds for different antenna gains to perform channel access on the unlicensed spectrum, thereby fully utilizing the beamforming gain to improve the system throughput on the premise of fair competition.

Description

Method and device in communication node for wireless communication
Technical Field
The present application relates to a transmission scheme of wireless signals in a wireless communication system, and more particularly, to a method and apparatus for multi-antenna transmission.
Background
Large-scale (Massive) MIMO (Multi-Input Multi-Output) becomes a research hotspot of next-generation mobile communication. In massive MIMO, multiple antennas form a narrow beam pointing in a specific direction by beamforming to improve communication quality. The base station and the UE (User equipment) can implement narrower beams with lower rf link cost by performing analog beamforming at the rf end.
In an LTE (Long Term Evolution ) LAA (licensed Assisted Access) system, a base station and a UE need to perform LBT (Listen Before Talk) Before sending data on an unlicensed spectrum to ensure that no interference is caused to other ongoing radio transmissions on the unlicensed spectrum. In the 5G system, massive MIMO is applied to unlicensed spectrum in the millimeter wave band, and how to apply analog beamforming to LAA system in the millimeter wave band is a problem to be solved in the industry.
Disclosure of Invention
The inventor finds out through research that: if a base station or UE uses a wide beam or omni-directional antenna during LBT and uses a narrow beam during transmission, the interference of narrow beam transmission to a specific direction is larger than a threshold value.
The present application provides a solution to the above problems. It should be noted that the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict. For example, embodiments and features in embodiments in the user equipment of the present application may be applied in the base station and vice versa.
The application discloses a method in a first type of communication node for wireless communication, comprising
-performing energy detection on a first channel during a first time period resulting in a first detection power;
-determining whether a first set of conditions and a second set of conditions are met, the first set of conditions comprising a condition that the first detected power is below a first power threshold, the second set of conditions comprising a condition that the first detected power is below a second power threshold, the first power threshold being below the second power threshold;
-if the first set of conditions is met, transmitting a first wireless signal on a first channel within a second time period using a target set of spatial transmission parameters, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; transmitting the first wireless signal on the first channel within the second time period using the first set of spatial transmission parameters if the first set of conditions is not satisfied but the second set of conditions is satisfied.
As an embodiment, the above method has a benefit that different energy detection thresholds are used according to the beam gain caused by the beam used for the subsequent transmission, so as to avoid the interference in a specific direction from being over-limited by using the beam with higher beam gain during transmission.
As an example, one time of the energy detection means: the base station apparatus monitors a reception power over a time period within a given duration.
As an embodiment, one time of the energy detection means: the base station device monitors received energy over a time period within a given duration.
As an embodiment, one time of the energy detection means: the base station device perceiving (Sense) 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 first channel is located.
As an embodiment, one time of the energy detection means: the base station device perceiving (Sense) all wireless signals on a given frequency domain resource over a time period within a given duration to obtain a given energy; the given frequency domain resource is a frequency band in which the first channel is located.
As an embodiment, the energy detection is implemented in a manner defined in section 15 of 3gpp ts 36.213.
As an embodiment, the energy detection is implemented by an energy detection manner in LTE LAA.
As an embodiment, the energy detection is an energy detection in LBT (Listen Before transmit).
As an embodiment, the energy detection is implemented by an energy detection manner in WiFi.
As an embodiment, the energy detection is implemented by measuring RSSI (Received Signal Strength Indication).
As an embodiment, the first type of communication node is a user equipment.
As an embodiment, the first type of communication node is a communication device.
For one embodiment, the first channel refers to a wireless channel on a first frequency band.
As one embodiment, the first channel is deployed in an unlicensed frequency band.
As an embodiment, the first frequency band is a reception frequency band of the first type communication node.
As one embodiment, the first frequency band is an unlicensed frequency band.
As an example, the bandwidth of the first channel is 20MHz.
For one embodiment, the bandwidth of the first channel is 100MHz.
As an embodiment, the bandwidth of the first channel is 1GHz.
As an embodiment, the first type communication node calculates energy of a time domain signal received on the first channel over the first time period, and averages over time to obtain the first detection power.
As an embodiment, the first type communication node calculates energy of all wireless signals received on the first channel over the first time period, and averages over time to obtain the first detected power.
As an embodiment, the first time period is a duration of time within one slot (slot).
As an example, the first time period is a duration of time within one delay period (defer period).
As one embodiment, the first period of time is not shorter than 4 microseconds.
As an embodiment, the first type of communication node calculates energy of a time domain signal received on the first channel for a given duration of time within the first time period, and averages over time to obtain the first detection power.
As an embodiment, the first type of communication node calculates the energy of all wireless signals received on the first channel for a given duration of time within the first time period, and averages over time to obtain the first detected power.
As an embodiment, the given duration is not shorter than 4 microseconds.
As an embodiment, the first time period is one time slot.
As an example, the time length of the first period is 9 microseconds.
As one embodiment, the first time period is a delay time period.
As an example, the time length of the first period is 25 microseconds.
As an example, the time length of the first time period is 16 microseconds plus a positive integer number of 9 microseconds.
As an embodiment, the first detected power, the first power threshold, and the second power threshold are all in mdB (millidecibels).
As one embodiment, the first detected power, the first power threshold, and the second power threshold are all in units of milliwatts.
As an embodiment, the first power threshold and the second power threshold are two energy detection thresholds.
As an embodiment, the first time period is a duration time period within the first time slot.
As an example, the time length of the first time slot is 9 microseconds.
As an embodiment, said first time slot is considered to be a first type of free time slot if said first detected power is below said first power threshold.
As an embodiment, the first slot is one of M1 slots, and the first condition set includes that all of the M1 slots are the first type of idle slot. The M1 is a positive integer.
As an example, said M1 is equal to 1.
As an embodiment, M1 is a positive integer greater than 1.
As an embodiment, the first slot is a first slot in a time domain among the M1 slots.
As an embodiment, the first slot is a last slot in a time domain among the M1 slots.
As an embodiment, the first time slot is a time slot in which the first communication node performs energy detection for the first time when preparing to transmit the first wireless signal.
As an embodiment, the first time slot is any one of the M1 time slots.
As an embodiment, the last M1-1 time slots of the M1 time slots are consecutive in the time domain.
As an embodiment, a first time slot in the time domain and a second time slot in the time domain of the M1 time slots are discontinuous.
As an embodiment, the length of any one of the M1 time slots is 9 microseconds.
As an embodiment, the interval between the first time slot in the time domain and the second time slot in the time domain of the M1 time slots is 7 microseconds.
As an embodiment, the M1 slots all belong to the first delay period.
As an embodiment, the first delay time period refers to a time period between a time domain starting point of a first time slot in a time domain of the M1 time slots and a time domain ending point of a last time slot in the time domain of the M1 time slots.
As one embodiment, the M1 is preconfigured.
As one embodiment, the M1 is configured by default.
As an embodiment, said M1 is randomly generated.
As an embodiment, the value of M1 is related to an access priority of the first type of communication node on the first channel.
As an embodiment, the first type of communication device performs energy detection for a fourth time period before the first time period to obtain a fourth detected power, the fourth detected power is not lower than the first power threshold, and the first type of communication device prepares to transmit the first wireless signal but does not yet transmit the first wireless signal before the fourth time period.
As an embodiment, the time slot in which the fourth time slot is located is not a free time slot of the first type.
As one embodiment, the first set of conditions includes: the fourth detected power is not lower than the first power threshold; the first detected power is below the first power threshold.
As an embodiment, a fourth delay period precedes the first slot, the fourth delay period includes M4 slots, the M4 is a positive integer, and at least one of the M4 slots is not the first type of idle slot.
As an embodiment, the timeslot in which the fourth time slot is located is one timeslot of the M4 timeslots.
As an example, the M4 is equal to the M1.
As an embodiment, the length of the fourth delay period is the same as the first delay period.
As one embodiment, the fourth delay period is temporally contiguous with the first time slot, the first set of conditions comprising: at least one of the M4 time slots is not the first type of idle time slot, and the first time slot is one of the first type of idle time slots.
As one embodiment, the fourth delay period is consecutive in time domain to the first delay period, the first set of conditions comprising: at least one of the M4 timeslots is not the first type of idle timeslot, and all of the M1 timeslots are the first type of idle timeslot.
As an embodiment, at least two time slots of the M1 time slots respectively belong to different delay time periods, one of the delay time periods includes a plurality of time slots, and the different delay time periods have the same length.
As an embodiment, if said first detected power is lower than said second power threshold, said first time slot is considered as a second type of free time slot.
As an embodiment, the first slot is one of M2 slots, and the first condition set includes that all of the M2 slots are free slots of the second type. And M2 is a positive integer.
As an example, said M2 is equal to 1.
As an embodiment, M2 is a positive integer greater than 1.
As an embodiment, the first slot is a first slot in a time domain among the M2 slots.
As an embodiment, the first slot is a last slot in a time domain among the M2 slots.
As an embodiment, the first time slot is any one of the M2 time slots.
As an embodiment, the last M2-1 slots of the M2 slots are consecutive in the time domain.
As an embodiment, a first time slot in the time domain and a second time slot in the time domain of the M2 time slots are discontinuous.
As an embodiment, the length of any one of the M2 time slots is 9 microseconds.
As an embodiment, a gap between a first time slot in the time domain and a second time slot in the time domain of the M2 time slots is 7 microseconds.
As an embodiment, the M2 slots all belong to the second delay period.
As an embodiment, the second delay period refers to a period between a time domain starting point of a first time slot in the time domain among the M2 time slots and a time domain ending point of a last time slot in the time domain among the M2 time slots.
As one embodiment, the M2 is preconfigured.
As one embodiment, the M2 is configured by default.
As one example, the M2 is randomly generated.
As an embodiment, the value of M2 is related to an access priority of the first type of communication node on the first channel.
As an embodiment, the first type communication device performs energy detection in a fifth time period before the first time period to obtain a fifth detection power, where the fifth detection power is not lower than the second power threshold, and the first type communication device prepares to transmit the first wireless signal but does not yet transmit the first wireless signal before the fifth time period.
As an embodiment, the timeslot in which the fifth time period is located is not a second type of idle timeslot.
As one embodiment, the first set of conditions includes: the fifth detected power is not lower than the second power threshold; the first detected power is lower than the second power threshold.
As an embodiment, a fifth delay period precedes the first slot, the fifth delay period includes M5 slots, the M5 is a positive integer, and at least one of the M5 slots is not the second type of idle slot.
As an embodiment, the time slot in which the fifth time period is located is one time slot of the M5 time slots.
As an example, said M5 is equal to said M2.
As an embodiment, the length of the fifth delay period is the same as the second delay period.
As one embodiment, the fifth delay period is consecutive in time domain to the first slot, the first set of conditions comprising: at least one of the M5 timeslots is not a free timeslot of the second type, and the first timeslot is a free timeslot of the second type.
As one embodiment, the fourth delay period is consecutive in the time domain to the second delay period, the first set of conditions comprising: at least one of the M5 timeslots is not the second type of idle timeslot, and the M2 timeslots are all the second type of idle timeslots.
As an embodiment, at least two time slots of the M2 time slots belong to different delay time periods, one of the delay time periods includes a plurality of time slots, and the different delay time periods have the same length.
As an example, if said first detected power is lower than said first power threshold, said first time slot is considered to be both a first type of said idle time slot and a second type of said idle time slot; said first time slot is considered to be one of said second class of free time slots but not one of said first class of free time slots if said first detected power is below said second power threshold but not below said first power threshold.
In one embodiment, the first wireless signal carries physical layer control signaling.
As one embodiment, the first wireless signal carries data.
As one embodiment, the first wireless signal carries higher layer signaling.
As an embodiment, the first Radio signal carries RRC (Radio Resource Control) signaling.
As an embodiment, the first wireless signal is a PDSCH (Physical Downlink Shared Channel).
As an embodiment, the first radio signal is a PDCCH (Physical Downlink Control Channel).
As an embodiment, the first wireless signal is an Enhanced Physical Downlink Control Channel (EPDCCH).
As an embodiment, the first wireless signal is a downlink reference signal.
As one embodiment, the first wireless Signal is a Discovery Reference Signal (Discovery Reference Signal).
As one embodiment, the first wireless Signal is a CSI-RS (Channel State Information Reference Signal).
As one embodiment, the first wireless Signal is SS (Synchronization Signal).
In one embodiment, the first wireless signal is an uplink reference signal.
As an embodiment, the first wireless signal is a PUSCH (Physical Uplink Shared Channel).
As an embodiment, the first radio signal is a PUCCH (Physical Uplink Control Channel).
As an embodiment, the first wireless signal is UCI (Uplink Control Information).
As an embodiment, the bandwidth of the first channel is used to determine the first threshold power and the second threshold power.
As an embodiment, the larger the bandwidth of the first channel, the larger the first threshold power and the second threshold power.
As one embodiment, a first sub-band is used to transmit the first wireless signal.
As an embodiment, the first sub-band is a frequency band in which the first channel is located.
As an embodiment, the first subband is a subband of a frequency band in which the first channel is located.
As one embodiment, the first wireless signal is transmitted over an unlicensed spectrum.
As an embodiment, the first subband is a carrier.
As an embodiment, the first sub-band is a BWP (Bandwidth Part).
As an embodiment, the first sub-band consists of a positive integer number of sub-carriers that are contiguous in the frequency domain.
As an embodiment, the bandwidth of the first sub-band is 10MHz.
As an embodiment, the bandwidth of the first sub-band is 20MHz.
As one embodiment, the second time period is subsequent to the first time period.
As one embodiment, the second time period is after the first time slot.
As an embodiment, the second time period is associated to the first time slot.
As one embodiment, the second time period and the first time slot are consecutive in a time domain.
As an embodiment, the starting time of the second time period is after the ending time of the first time slot, and the time interval between the starting time of the second time period and the ending time of the first time slot does not exceed a first time length.
As an example, the first length of time is 25 microseconds.
As one example, the first length of time is 16 microseconds.
As an embodiment, the first time length is related to a center frequency point of the first sub-band.
As an embodiment, the first time length is related to a subcarrier spacing corresponding to the first wireless signal.
As an embodiment, the starting time of the second period of time is after the ending time of the first delay period, the second period of time being temporally consecutive to the first delay period.
As an embodiment, a start time of the second period of time is after an end time of the second delay period, the second period of time being temporally continuous with the first delay period of time.
In one embodiment, the first and second sets of spatial transmission parameters each include a beamforming vector.
As one embodiment, the beamforming vector comprises an analog beamforming vector.
As one embodiment, the beamforming vector comprises a digital beamforming vector.
As an embodiment, the first and second spatial transmission parameter sets are respectively used for generating two downlink reference signals.
As an embodiment, the first and second spatial transmit parameter sets correspond to a first and second antenna port groups, respectively, and the first and second antenna port groups respectively include a positive integer number of antenna ports.
As an embodiment, the antenna port is formed by overlapping a plurality of physical antennas through antenna Virtualization (Virtualization). And the mapping coefficients of the antenna ports to the plurality of physical antennas form a beam forming vector which is used for virtualizing the antennas to form beams.
For one embodiment, the antenna port set includes one antenna port.
For one embodiment, the antenna port set includes a plurality of antenna ports.
As one embodiment, the antenna ports correspond to reference signals one to one.
As an embodiment, the first and second sets of spatial transmission parameters are used to generate first and second transmission beams, respectively, the first transmission beam being different from the second transmission beam.
As an embodiment, the first transmission beam and the second transmission beam have different beamwidths.
As an embodiment, the first transmit beam and the second transmit beam have different center directions.
As an example, the first transmission beam and the second transmission beam have different beam widths but the same central direction, and the angle covered by the second transmission beam in space is within the angle covered by the first transmission beam in space.
As an embodiment, the first transmit beam and the second transmit beam have different beam gains.
As an embodiment, the first transmit beam and the second transmit beam are both analog transmit beams.
As an embodiment, the first transmit beam and the second transmit beam are both digital transmit beams.
As an embodiment, the first and second transmit beams are both analog-to-digital hybrid transmit beams.
As an embodiment, the analog transmission beam refers to a transmission beam formed by analog beamforming on a radio frequency signal.
As an embodiment, the analog receiving beam refers to a receiving beam formed by analog beamforming on a radio frequency signal.
As an embodiment, the digital transmission beam refers to a transmission beam that performs digital beamforming on a baseband signal.
As an embodiment, the digital receive beam refers to a receive beam that digitally beamforms a baseband signal.
As an embodiment, the analog-digital hybrid transmission beam refers to a transmission beam formed by performing a beamforming operation on both a baseband signal and a radio frequency signal.
As an embodiment, the analog-digital hybrid receive beam refers to a receive beam formed by performing a beamforming operation on both a baseband signal and a radio frequency signal.
As an embodiment, the analog beamforming refers to forming a beam using a phase shifter at a radio frequency end.
As an embodiment, the digital beamforming refers to processing a baseband signal to form a beam.
In one embodiment, the first set of spatial transmission parameters includes a first transmit beamforming vector and the second set of spatial transmission parameters includes a second transmit beamforming vector.
As one embodiment, the first transmit beamforming vector and the second transmit beamforming vector are both analog beamforming vectors.
As one embodiment, the first transmit beamforming vector and the second transmit beamforming vector are both digital beamforming vectors.
As one embodiment, the analog beamforming vector is used for the analog beamforming.
As one embodiment, the digital beamforming vector is used for the digital beamforming.
As an embodiment, the transmission power of the first wireless signal is independent of the first detection power.
According to one aspect of the present application, the first set of conditions includes a condition that the first count is equal to P1; the second set of conditions includes a condition that the second count is equal to P2; the update of the first count is related to whether the first detected power is below the first power threshold; the update of the second count is related to whether the second detected power is below the second power threshold; both said P1 and said P2 are non-negative integers.
As an embodiment, the above method has the advantage of using a counter to control channel access to the unlicensed spectrum.
As an embodiment, the first count is updated if the first detected power is below the first power threshold.
As one embodiment, the second count is updated if the first detected power is below the second power threshold.
As an embodiment, the first count is updated if all of the M1 slots are free slots of the first type.
As an embodiment, the second count is updated if all of the M2 slots are free slots of the second type.
As one embodiment, the first count is updated if the first detected power is below the first power threshold and the first count is not equal to the P1.
For one embodiment, the second count is updated if the first detected power is below the second power threshold and the second count is not equal to the P2.
As one embodiment, the first set of conditions includes: the first count is equal to the P1; the first detected power is below a first power threshold.
As one embodiment, the first set of conditions includes: the first count is equal to the P1; the M1 slots are all the first type of idle slots.
As an embodiment, the second set of conditions includes: the second count is equal to the P2; the first detected power is below a second power threshold.
As an embodiment, the second set of conditions includes: the second count is equal to the P2; the M1 time slots are all idle time slots of the second type.
As an embodiment, before energy detection is made within the first time period, the first count is updated but not equal to the P1, the first set of conditions is not satisfied, and the first detected power is lower than the first power threshold for updating the first count again.
As an embodiment, before energy detection is performed in the first time period, the second count is updated but not equal to the P2, and the second condition set is not satisfied; the first detected power being below the second power threshold is used to update the second count again.
As one embodiment, the first set of conditions is satisfied if the first detected power is below the first power threshold used to update the first count to P1.
As one embodiment, the second set of conditions is satisfied if the first detected power is below a second power threshold used to update the second count to P2.
As one embodiment, the first set of conditions is satisfied if the first count is P1 and the first detected power is below the first power threshold.
As one embodiment, the second set of conditions is satisfied if the second count is P2 and the first detected power is below the second power threshold.
As an embodiment, the first set of conditions is satisfied if the first count is P1 and the M1 slots are all free slots of the first type.
As an embodiment, the second set of conditions is satisfied if the second count is P2 and the M2 slots are all free slots of the second type.
As an embodiment, the updating is decrementing, the P1 and the P2 are both equal to 0, and the initial values of the first count and the second count are both positive integers.
As an embodiment, the initial values of the first count and the second count are both randomly generated.
As an embodiment, the initial values of the first count and the second count are random numbers evenly distributed (uniform) in a first range and a second range, respectively.
As an embodiment, the first range and the second range are both preconfigured.
As one embodiment, a priority of the first wireless signal is used to determine the first range and the second range.
As an embodiment, the updating is incrementing, the P1 and the P2 are both positive integers, and the initial values of the first count and the second count are both 0.
As an example, both P1 and P2 are randomly generated.
As an example, the P1 and the P2 are random numbers uniformly distributed (uniform) in a third range and a fourth range, respectively.
As an embodiment, the third range and the fourth range are both preconfigured.
As an embodiment, the first count and the second count are used to count the number of the first type of free slots and the second type of free slots, respectively.
According to one aspect of the application, is characterized in that it comprises
-after the first wireless signal is transmitted on the first channel, the first count or the second count is reset.
As an embodiment, the above method has the benefit of achieving fair contention over the unlicensed spectrum.
As one embodiment, the first set of conditions is satisfied, the first count is reset after the first wireless signal is transmitted on the first channel, and the second count is not reset.
As an embodiment, the second set of conditions is satisfied, the second count is reset after the first wireless signal is transmitted on the first channel, and the first count is not reset.
As an embodiment, the first set of conditions is met or the second set of conditions is met, the first wireless signal is transmitted on the first channel, and both the first count and the second count are reset.
As one embodiment, the update is an increment and the reset is a reset to 0.
As an embodiment, the update is a decrement, and the reset is a reset to an initial value.
As an embodiment, the update is a decrement, and the reset is to generate an initial value again in a random manner.
According to an aspect of the application, the update is an increment, or the update is a decrement.
As one example, the incrementing refers to adding 1.
As one example, the decrement is a decrement of 1.
According to one aspect of the application, if neither the first condition set nor the second condition set is satisfied, then including
-performing energy detection on the first channel for a third time period resulting in a second detected power;
-determining whether a third set of conditions and a fourth set of conditions are met, the third set of conditions comprising conditions that the second detected power is below the first power threshold, the fourth set of conditions comprising conditions that the second detected power is below the second power threshold;
-if the third set of conditions is met, transmitting the first wireless signal on the first channel for a fourth time period using the set of target spatial transmission parameters; transmitting the first wireless signal on the first channel for the fourth time period using the first set of spatial transmission parameters if the third set of conditions is not satisfied but the fourth set of conditions is satisfied.
As an embodiment, the above method has the advantage that the monitoring of the first channel continues in case neither the first nor the second set of conditions is fulfilled.
As an embodiment, the third set of conditions includes a portion of the conditions of the first set of conditions.
As an embodiment, the fourth condition set includes a part of the conditions of the second condition set.
As an embodiment, the third set of conditions includes a condition that the first count is equal to the P1.
As an embodiment, the fourth set of conditions includes a condition that the second count is equal to the P2.
According to one aspect of the present application, a first channel access procedure and a second channel access procedure are used for determining whether to transmit the first wireless signal on the first channel within the second time period, the first power threshold and the second power threshold are used for the first channel access procedure and the second channel access procedure, respectively, and the first detection power is used for the first channel access procedure and the second channel access procedure simultaneously.
As an embodiment, the first channel access procedure and the second channel access procedure are both used to determine whether a wireless signal can be transmitted on the first channel.
As an embodiment, if the first detected power is below the first power threshold, the first time slot is considered idle in both the first channel access procedure and the second channel access procedure; the first timeslot is considered idle in the second type of channel access procedure but busy in the first type of channel access procedure if the first detected power is below the second power threshold but not below the first power threshold.
As an embodiment, the first count and the second count are used for the first channel access procedure and the second channel access procedure, respectively.
As an embodiment, the first detected power is used for both the first channel access procedure and the second channel access procedure.
For one embodiment, the first and second power thresholds are used for the first and second channel access procedures, respectively.
As an embodiment, the first Channel Access Procedure and the second Channel Access Procedure are both implemented by a Channel Access Procedure (Channel Access Procedure) defined in section 15 of 3gpp ts 36.213; in the first channel access process, one first type of free time slot is defined as a free time slot, otherwise, the first type of free time slot is a busy time slot; in the second channel access process, one of the second type of free slots is defined as a free slot, and otherwise, the second type of free slot is defined as a busy slot.
As an embodiment, the first condition set and the second condition set belong to the first channel access process and the second channel access process, respectively.
As an example, if the first channel access procedure is used to transmit wireless signals on the first channel, transmitting wireless signals on the first channel using the target set of spatial transmission parameters, which is either the first set of spatial transmission parameters or the second set of spatial transmission parameters; transmitting a wireless signal on the first channel using the first set of spatial transmission parameters if the second channel access procedure is used to transmit a wireless signal on the first channel.
According to one aspect of the present application, a first set of spatial receive parameters is used to perform energy detection on the first channel during the first time period, the first set of spatial receive parameters being associated with the first set of spatial transmit parameters.
As an embodiment, the beamforming parameters in the first set of spatial reception parameters are the same as the beamforming parameters in the first set of spatial transmission parameters.
In one embodiment, the first set of spatial receive parameters is used to generate a first receive beam.
As an embodiment, a center direction of the first receive beam is the same as a center direction of the first transmit beam.
As an embodiment, the beamforming gain of the first receive beam is the same as the beamforming gain of the first transmit beam.
As an embodiment, the antenna gain of the first receive beam is the same as the antenna gain of the first transmit beam.
As an embodiment, the beamwidth of the first receive beam is the same as the beamwidth of the first transmit beam.
In one embodiment, the first set of spatial reception parameters forms omni-directional reception and the first set of spatial transmission parameters forms omni-directional transmission.
As an embodiment, the first receive beam and the first transmit beam are an analog receive beam and an analog transmit beam, respectively.
As an embodiment, the first receive beam and the first transmit beam are a digital receive beam and a digital transmit beam, respectively.
As an embodiment, the first receive beam and the first transmit beam are an analog-to-digital hybrid receive beam and an analog-to-digital hybrid transmit beam, respectively.
As an embodiment, the analog receiving beam refers to a receiving beam that performs analog beamforming on a radio frequency signal.
For one embodiment, the digital receive beams refer to receive beams that digitally beamform baseband signals.
As an embodiment, the analog-digital hybrid receive beam refers to a receive beam formed by performing a beamforming operation on both a baseband signal and a radio frequency signal.
In one embodiment, the first set of spatial receive parameters and the first set of spatial transmit parameters comprise a first receive beamforming vector and a first transmit beamforming vector, respectively.
As one embodiment, the first receive beamforming vector and the transmit beamforming vector are analog beamforming vectors.
As one embodiment, the first receive beamforming vector and the transmit beamforming vector are digital beamforming vectors.
In one aspect of the present application, the antenna gains corresponding to the first spatial receiving parameter group and the first spatial transmitting parameter group are the same.
As an embodiment, the first receive beam and the first transmit beam produce the same antenna gain.
As an embodiment, the beamforming gain of the first receive beam and the first transmit beam are the same.
As an embodiment, the beamwidths of the first receive beam and the first transmit beam are the same.
In one aspect of the present application, the first spatial transmission parameter set and the second spatial transmission parameter set correspond to different antenna gains, respectively.
As an embodiment, the first and second transmit beams produce different antenna gains.
As an embodiment, the first transmission beam and the second transmission beam have different beamwidths.
As an embodiment, the first transmit beam produces an antenna gain that is less than an antenna gain produced by the second transmit beam.
As an embodiment, a beam width of the first transmission beam is larger than a beam width of the second transmission beam.
As an embodiment, the first type communication device sends a third signaling, where the third signaling is used to determine an antenna gain corresponding to the first spatial transmission parameter group or an antenna gain corresponding to the second spatial transmission parameter group.
In one aspect of the present application, an antenna gain corresponding to the first spatial transmission parameter group is smaller than an antenna gain corresponding to the second spatial transmission parameter group.
As an embodiment, the first transmit beam produces an antenna gain that is less than an antenna gain produced by the second transmit beam.
As an embodiment, a beam width of the first transmission beam is larger than a beam width of the second transmission beam.
According to an aspect of the application, a difference between an antenna gain corresponding to the first set of spatial transmission parameters and an antenna gain corresponding to the second set of spatial transmission parameters is used to determine the first power threshold or the second power threshold.
As an embodiment, the above method has a benefit in that the power threshold is adjusted according to the antenna gain, thereby increasing the flexibility of the system.
In one embodiment, the antenna gain corresponding to the first spatial transmission parameter group is a first antenna gain, and the antenna gain corresponding to the second spatial reception parameter group is a second antenna gain.
As an embodiment, the first antenna gain is an antenna gain of the first transmission beam and the second antenna gain is an antenna gain of the second transmission beam.
As an embodiment, the first antenna gain is a beamforming gain of the first transmission beam and the second antenna gain is a beamforming gain of the second transmission beam.
As one embodiment, the unit of the first antenna gain and the second antenna gain is dB.
As an embodiment, the second power threshold and the difference between the antenna gain corresponding to the first set of spatial transmission parameters and the antenna gain corresponding to the second set of spatial transmission parameters are jointly used to determine the first power threshold.
As an embodiment, the first power threshold and the difference between the antenna gain corresponding to the first set of spatial transmission parameters and the antenna gain corresponding to the second set of spatial transmission parameters are jointly used to determine the second power threshold.
As an embodiment, the second power threshold and the difference between the antenna gain corresponding to the first spatial transmission parameter set and the antenna gain corresponding to the second spatial transmission parameter set are jointly used to calculate the first power threshold.
As an embodiment, the first power threshold and the difference between the antenna gain corresponding to the first spatial transmission parameter set and the antenna gain corresponding to the second spatial transmission parameter set are jointly used to calculate the second power threshold.
As one embodiment, the first threshold and the second threshold are in units of milliwatts, and a ratio of the first power threshold to the second power threshold is equal to the second antenna gain minus the first antenna gain.
As an embodiment, the unit of the first threshold and the second threshold is mdB, and the second power threshold minus the first power threshold is equal to the second antenna gain minus the first antenna gain.
According to one aspect of the application, is characterized in that it comprises
-transmitting first signaling or receiving first signaling;
wherein the first signaling is used to determine at least one of { configuration information of the first wireless signal, a target spatial reception parameter set }, the configuration information including at least one of { occupied frequency domain resource, MCS, NDI, HARQ process number }, the target spatial reception parameter set being associated with the target spatial transmission parameter set.
As an embodiment, the above method has a benefit in that a signal is received using a reception beam matched to a transmission beam, thereby improving reception quality.
As an embodiment, the first signaling is physical layer signaling.
As an embodiment, the first signaling is dynamic.
As an embodiment, the first signaling is semi-static.
As an embodiment, the first signaling is DCI (Downlink Control Information).
As an embodiment, a TCI (Transmit Configuration information) field in the first signaling indicates the target antenna port group.
As an embodiment, the first signaling indicates at least one of { the first spatial reception parameter set, the first power threshold, the second power threshold, the first time period }.
As an embodiment, the first type of communication node is a base station, the first signaling is a DCI (Downlink Control Information), and the first type of communication node sends the first signaling.
As an embodiment, the first type of communication node is a device, the first signaling is a DCI (Downlink Control Information), and the first type of communication node receives the first signaling.
As an embodiment, the configuration information of the first wireless signal includes frequency domain resources occupied by the first wireless signal.
As one embodiment, the configuration of the first wireless signal includes a Modulation Coding Scheme (MCS) including the first wireless signal.
As one embodiment, the configuration of the first wireless signal includes an NDI (New Data Indicator) of the first wireless signal.
As an embodiment, the configuration of the first wireless signal includes a HARQ (Hybrid Automatic Request) process number of the first wireless signal.
As an embodiment, the first signaling indicates that spatial reception parameters for receiving a first reference signal group are used for receiving the first wireless signal, the first spatial transmission parameter group is used for transmitting the first reference signal group, a first spatial reception parameter group is used for receiving the first reference signal group, and the target spatial reception parameter group is the first spatial reception parameter group.
As an embodiment, the first signaling indicates that spatial reception parameters for receiving a second set of reference signals are used for receiving the first wireless signal, the second set of spatial transmission parameters is used for transmitting the second set of reference signals, a second set of spatial reception parameters is used for receiving the first set of reference signals, and the target set of spatial reception parameters is the second set of spatial reception parameters.
According to one aspect of the application, the method is characterized by comprising the following steps:
-receiving second signaling;
wherein the first type of communication node is a user equipment and the second signaling is used to determine a difference between the second power threshold and the first power threshold.
According to an aspect of the application, the above method is advantageous in that the system is flexible to configure the second power threshold and the first power threshold.
As an embodiment, the second signaling is RRC signaling.
As an embodiment, the second signaling is cell-common.
As an embodiment, the second signaling is common to a terminal group, the terminal group including a positive integer number of terminals, the first class communication node belonging to the terminal group.
As an embodiment, the second signaling is higher layer signaling.
As an embodiment, the second signaling is cell-common.
As an embodiment, the unit of the first power threshold and the second power threshold is mdB.
As an embodiment, the second power threshold is configured by default, the second signaling indicates a difference between the second power threshold and the first power threshold, and the difference between the second power threshold and the first power threshold and the second power threshold are used for calculating the first power threshold.
As an embodiment, the second power threshold is configured by default, the second signaling indicates a ratio between the second power threshold and the first power threshold, and the ratio between the second power threshold and the first power threshold and the second power threshold are used for calculating the first power threshold.
As one embodiment, the second signaling explicitly indicates a difference between the second power threshold and the first power threshold
As one embodiment, the second signaling implicitly indicates a difference between the second power threshold and the first power threshold
According to an aspect of the application, the first type communication node is a user equipment or the first type communication node is a base station.
The application discloses a method in a second type of communication node for wireless communication, comprising
-transmitting second signaling;
-monitoring a first wireless signal on a first channel for a second time period;
wherein the second signaling is used to determine a difference between the second power threshold and the first power threshold; the first power threshold is lower than the second power threshold; the first detected power is a result of performing energy detection on the first channel for a first time period; a first set of conditions includes a condition that the first detected power is below the first power threshold; a second set of conditions includes a condition that the first detected power is below the second power threshold; if the first set of conditions is satisfied, a target set of spatial transmission parameters is used for transmitting the first wireless signal on the first channel for the second time period, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; the first set of spatial transmission parameters is used to transmit the first wireless signal on the first channel for the second time period if the first set of conditions is not satisfied but the second set of conditions is satisfied.
According to an aspect of the application, it is characterized in that the communication node of the second type is a base station.
A first type of communication node device for wireless communication is disclosed, comprising
-a first receiver module performing energy detection on a first channel during a first time period resulting in a first detected power;
-a first handler module to determine whether a first set of conditions and a second set of conditions are met, the first set of conditions comprising conditions that the first detected power is below a first power threshold, the second set of conditions comprising conditions that the first detected power is below a second power threshold, the first power threshold being below the second power threshold;
-a first transmitter module to transmit a first wireless signal on a first channel over a second time period with a target set of spatial transmission parameters if the first set of conditions is met, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; transmitting the first wireless signal on the first channel within the second time period using the first set of spatial transmission parameters if the first set of conditions is not satisfied but the second set of conditions is satisfied.
As an embodiment, the above first type of communication node device is characterized in that the first condition set includes a condition that the first count is equal to P1; the second set of conditions includes a condition that the second count is equal to P2; the update of the first count is related to whether the first detected power is below the first power threshold; the update of the second count is related to whether the second detected power is below the second power threshold; both said P1 and said P2 are non-negative integers.
As an embodiment, the above-mentioned first type of communication node device is characterized in that the first handler module resets the first count or the second count after the first wireless signal is transmitted on the first channel.
As an embodiment, the communication node devices of the first kind mentioned above are characterized in that the update is an increment or the update is a decrement.
As an embodiment, the above-mentioned first type of communication node device is characterized in that, if neither the first condition set nor the second condition set is satisfied, the first receiver module performs energy detection on the first channel in a third time period, so as to obtain a second detection power; the first handler module determining whether a third condition set and a fourth condition set are satisfied, the third condition set including a condition that the second detected power is lower than the first power threshold, the fourth condition set including a condition that the second detected power is lower than the second power threshold; if the third set of conditions is satisfied, the first transmitter module transmitting the first wireless signal on the first channel for a fourth time period using the target spatial transmission parameter set; if the third set of conditions is not satisfied but the fourth set of conditions is satisfied, the first transmitter module transmits the first wireless signal on the first channel for the fourth time period using the first set of spatial transmission parameters.
As an embodiment, the above-mentioned first type of communication node device is characterized in that a first channel access procedure and a second channel access procedure are used for determining whether to transmit the first wireless signal on the first channel within the second time period, the first power threshold and the second power threshold are respectively used for the first channel access procedure and the second channel access procedure, and the first detected power is used for both the first channel access procedure and the second channel access procedure.
As an embodiment, the above first type of communication node device is characterized in that a first set of spatial receiving parameters is used for performing energy detection on the first channel within the first time period, the first set of spatial receiving parameters being associated with the first set of spatial transmitting parameters.
As an embodiment, the first type of communication node device is characterized in that the first spatial reception parameter set and the first spatial transmission parameter set correspond to the same antenna gain.
As an embodiment, the first type of communication node device is characterized in that the first spatial transmission parameter set and the second spatial transmission parameter set correspond to different antenna gains, respectively.
As an embodiment, the first type of communication node device is characterized in that the antenna gain corresponding to the first spatial transmission parameter group is smaller than the antenna gain corresponding to the second spatial transmission parameter group.
As an embodiment, the above-mentioned first type of communication node device is characterized in that a difference between an antenna gain corresponding to the first spatial transmission parameter group and an antenna gain corresponding to the second spatial transmission parameter group is used to determine the first power threshold or the second power threshold.
As an embodiment, the above-mentioned first type of communication node device is characterized in that the first transmitter module transmits a first signaling, or the first receiver module receives the first signaling; wherein the first signaling is used to determine at least one of { configuration information of the first wireless signal, a target spatial reception parameter set }, the configuration information including at least one of { occupied frequency domain resource, MCS, NDI, HARQ process number }, the target spatial reception parameter set being associated with the target spatial transmission parameter set.
As an embodiment, the above first kind of communication node device is characterized in that the first receiver module receives a second signaling; wherein the first type of communication node is a user equipment and the second signaling is used to determine a difference between the second power threshold and the first power threshold.
As an embodiment, the above first type of communication node device is characterized in that the first type of communication node is a user equipment.
As an embodiment, the above-mentioned first type communication node device is characterized in that the first type communication node is a base station.
The application discloses a second type communication node device for wireless communication, which comprises
-a second transmitter module for transmitting second signaling;
-a second receiver module monitoring for a first wireless signal on a first channel for a second time period;
wherein the second signaling is used to determine a difference between the second power threshold and the first power threshold; the first power threshold is lower than the second power threshold; the first detected power is a result of performing energy detection on the first channel over a first time period; the first set of conditions includes a condition that the first detected power is below the first power threshold; a second set of conditions includes a condition that the first detected power is below the second power threshold; if the first set of conditions is satisfied, a target set of spatial transmission parameters is used for transmitting the first wireless signal on the first channel for the second time period, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; the first set of spatial transmission parameters is used to transmit the first wireless signal on the first channel for the second time period if the first set of conditions is not satisfied but the second set of conditions is satisfied.
As an embodiment, the above second type of communication node device is characterized in that the second type of communication node is a base station.
As an embodiment, compared with the prior art, the present application has the following technical advantages:
different power thresholds are adopted for different antenna gains to carry out channel access on the unlicensed spectrum, so that the beamforming gain is fully utilized to improve the system throughput on the premise of fair competition.
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, made with reference to the accompanying drawings in which:
fig. 1 shows a flow diagram of performing energy detection on a first channel, determining a first set of conditions and a second set of conditions, and transmitting a first wireless signal according to one embodiment of the application.
FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;
figure 3 shows a schematic diagram of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;
figure 4 shows a schematic diagram of an evolved node and a given user equipment according to an embodiment of the present application;
FIG. 5 shows a wireless signal transmission flow diagram according to an embodiment of the present application;
FIG. 6 shows another wireless signal transmission flow diagram according to an embodiment of the present application;
FIG. 7 is a diagram illustrating a first set of spatial transmit parameters, a second set of spatial transmit parameters, and a first set of spatial receive parameters according to an embodiment of the present application;
FIG. 8 shows a schematic diagram of a first set of conditions and a second set of conditions according to an embodiment of the present application;
FIG. 9 shows a schematic of a first count and a second count according to an embodiment of the present application;
FIG. 10 shows a schematic diagram of a first channel access procedure and a second channel access procedure according to one embodiment of the present application;
fig. 11 shows a schematic diagram of an antenna structure of a first type of communication device according to an embodiment of the application;
fig. 12 shows a block diagram of a processing arrangement in a communication node of the first type according to an embodiment of the application;
fig. 13 shows a block diagram of a processing device in a communication node of the second type according to an embodiment of the application.
Detailed Description
The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.
Example 1
Embodiment 1 illustrates a flowchart of performing energy detection on a first channel, determining a first condition set and a second condition set, and transmitting a first wireless signal according to the present application, as shown in fig. 1. In fig. 1, each block represents a step. In embodiment 1, the first type communication node in this application sequentially performs energy detection on a first channel, and determines and transmits a first wireless signal for a first condition set and a second condition set; performing energy detection on a first channel in a first time period to obtain first detection power; determining whether a first set of conditions and a second set of conditions are met, the first set of conditions including a condition that the first detected power is below a first power threshold, the second set of conditions including a condition that the first detected power is below a second power threshold, the first power threshold being below the second power threshold; if the first set of conditions is satisfied, transmitting a first wireless signal on a first channel within a second time period using a target spatial transmission parameter set, the target spatial transmission parameter set being either a first spatial transmission parameter set or a second spatial transmission parameter set; transmitting the first wireless signal on the first channel within the second time period using the first set of spatial transmission parameters if the first set of conditions is not satisfied but the second set of conditions is satisfied.
As an embodiment, the first type of communication node is a UE.
As an embodiment, the first type communication node is a base station.
As an embodiment, the first time period is a delay time period with a time length of 25 milliseconds.
As an embodiment, the first time period is a time slot with a time length of 9 milliseconds.
As an embodiment, the first period is a duration period of not less than 4 msec for a duration within a slot of 9 msec in time length.
As an embodiment, the energy detection is calculating the power of all wireless signals received on the first channel over a duration of the first time period.
As one embodiment, the energy detection is calculating the power of all wireless signals received on a first channel over the first time period.
As one embodiment, the first channel is deployed in an unlicensed spectrum.
As an embodiment, the first channel is referred to as a frequency band used for transmitting wireless signals.
As an embodiment, the first detected power, the first power threshold and the second power threshold are in mdB units.
As an embodiment, the first and second sets of spatial transmit parameters are used to form first and second analog transmit beams, respectively.
In one embodiment, the first analog transmission beam has a beam width greater than the second analog transmission beam, and the first analog transmission beam has an antenna gain smaller than the second analog transmission beam.
As one embodiment, the first wireless signal is a PDSCH.
As one embodiment, the first wireless signal is a PUSCH.
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, long Term Evolution) and LTE-a (Long-Term Evolution Advanced, enhanced Long Term Evolution) 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 UE (User Equipment) 201, ng-RAN (next generation radio access Network) 202, epc (Evolved Packet Core)/5G-CN (5G-Core Network,5G Core Network) 210, hss (Home Subscriber Server) 220, and internet service 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the EPS provides packet switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit switched services or other cellular networks. The NG-RAN includes NR node bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol terminations 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-CN210. Examples of UEs 201 include cellular phones, smart phones, session Initiation Protocol (SIP) phones, laptops, personal Digital Assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband physical network equipment, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similar functioning devices. UE201 may also be referred to by those skilled in the art as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communications 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/UPFs 214, an S-GW (Service Gateway) 212, and a P-GW (Packet data Network Gateway) 213.MME/AMF/UPF211 is a control node that handles signaling between UE201 and EPC/5G-CN210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW213. The P-GW213 provides UE IP address 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 gNB203 corresponds to a first type of communication device in the present application, and the UE201 corresponds to a second type of communication device in the present application.
As an embodiment, the UE201 corresponds to a first type of communication device in this application, and the gNB203 corresponds to a second type of communication device in this 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 a user plane and a control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the User Equipment (UE) and the base station equipment (gNB or eNB) in three layers: layer 1, layer 2 and layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY301. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY301. In the user plane, the L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gNB on the network side. Although not shown, the UE may have several upper layers above the L2 layer 305, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.). The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides header compression for upper layer data packets to reduce radio transmission overhead, security by ciphering the data packets, and handover support for UEs between gnbs. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for the physical layer 301 and the L2 layer 305, but without the header compression function for the control plane. The Control plane also includes a RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configures the lower layers using RRC signaling between the gNB and the UE.
The wireless protocol architecture of fig. 3 is applicable to the first type of communication device in the present application, as an example.
The wireless protocol architecture of fig. 3 is applicable to the second type of communication device in the present application, as an example.
As an example, the first wireless signal in this application is generated in the PHY301.
As an embodiment, the first radio signal in this application is generated in the RRC sublayer 306.
As an embodiment, the first signaling in this application is generated in the PHY301.
As an embodiment, the first signaling in this application is generated in the RRC sublayer 306.
As an embodiment, the second signaling in this application is generated in the PHY301.
As an embodiment, the second signaling in this application is generated in the RRC sublayer 306.
Example 4
Embodiment 4 shows a schematic diagram of a base station device and a given user equipment according to the present application, as shown in fig. 4. Fig. 4 is a block diagram of a gNB410 in communication with a UE450 in an access network.
A controller/processor 440, scheduler 443, memory 430, receive processor 412, transmit processor 415, mimo transmit processor 441, mimo detector 442, transmitter/receiver 416, and antennas 420 may be included in the base station apparatus (410).
Controller/processor 490, memory 480, data source 467, transmit processor 455, receive processor 452, MIMO transmit processor 471, MIMO detector 472, transmitter/receiver 456, and antenna 460 may be included in a user equipment (UE 450).
In the downlink transmission, the processing related to the base station device (410) may include:
upper layer packets arrive at controller/processor 440, controller/processor 440 provides packet header compression, encryption, packet segmentation concatenation and reordering, and demultiplexing of the multiplex between logical and transport channels to implement L2 layer protocols for the user plane and control plane; the upper layer packet may include data or control information, such as DL-SCH (Downlink Shared Channel);
the controller/processor 440 may be associated with a memory 430 that stores program codes and data. Memory 430 may be a computer-readable medium;
controller/processor 440 informs scheduler 443 of the transmission requirement, scheduler 443 is configured to schedule the empty resource corresponding to the transmission requirement, and informs controller/processor 440 of the scheduling result;
controller/processor 440 passes control information for downlink transmission to transmit processor 415 resulting from processing of uplink reception by receive processor 412;
a transmit processor 415 receives the output bit stream from controller/processor 440 and performs various signal transmit 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 related to the user equipment (UE 450) 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 from the signal received from receiver 456, providing a MIMO detected baseband signal to receive processor 452;
the receive processor 452 extracts analog receive beamforming related parameters to output to the MIMO detector 472, the MIMO detector 472 outputs analog receive beamforming vectors to the receiver 456;
receive processor 452 performs various signal receive processing functions for the L1 layer (i.e., physical layer) including decoding, deinterleaving, descrambling, demodulation, and physical layer control signaling extraction, etc.;
controller/processor 490 receives the bit stream output by receive processor 452 and provides packet header decompression, decryption, packet segmentation concatenation and reordering, and demultiplexing of the multiplex between logical and transport channels to implement L2 layer protocols for the user and control planes;
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 processing of uplink transmissions by transmit processor 455 to receive processor 452.
As an embodiment, the receiver 416 receives the wireless signal on the first channel in this application through the antenna 420 during the first time period in this application, performs analog reception and analog reception beamforming, and converts the received signal into a baseband signal to be provided to the reception processor 412, and the reception processor 412 performs energy detection on the baseband signal to obtain the first detected power in this application.
As one embodiment, the receiving processor 412 determines whether the first condition set and the second condition set in the present application are satisfied.
The first wireless signal in this application is generated by the transmit processor 415 or by the controller/processor 440, for one embodiment. A MIMO transmit processor 441 performs multi-antenna precoding on the baseband signals associated with the first wireless signal output by the transmit processor 415. Transmitter 416 converts the baseband signals provided by MIMO transmit processor 441 to rf signals for analog transmit beamforming and transmission via antenna 420. Receiver 456 performs analog receive beamforming on the received signal via antenna 460 to obtain a radio frequency signal associated with the first wireless signal, which is converted to a baseband signal and provided to MIMO detector 472.MIMO detector 472 performs MIMO detection on the signal received from receiver 456. The receiving processor 452 processes the baseband signal output from the MIMO detector 472 to obtain the first wireless signal.
As an example, the first signaling in this application is generated by the transmit processor 415 or by the controller/processor 440. A MIMO transmit processor 441 performs multi-antenna precoding on the first signaling-related baseband signals output by the transmit processor 415. The transmitter 416 converts the baseband signals provided from the MIMO transmit processor 441 to rf signals, performs analog transmit beamforming, and transmits the rf signals via the antenna 420. Receiver 456 performs analog receive beamforming on the received signal via antenna 460 to obtain a radio frequency signal associated with the first signaling, and converts the radio frequency signal to a baseband signal for provision to MIMO detector 472.MIMO detector 472 performs MIMO detection on the signal received from receiver 456. The receive processor 452 processes the baseband signal output by the MIMO detector 472 to obtain the first signaling.
As an example, the second signaling in this application is generated by the transmit processor 415 or by the controller/processor 440. A MIMO transmit processor 441 performs multi-antenna precoding on the second signaling-related baseband signals output by transmit processor 415. The transmitter 416 converts the baseband signals provided from the MIMO transmit processor 441 to rf signals, performs analog transmit beamforming, and transmits the rf signals via the antenna 420. Receiver 456 will receive via antenna 460, perform analog receive beamforming to obtain rf signals associated with the second signaling, and convert the rf signals to baseband signals for MIMO detector 472. A MIMO detector 472 MIMO-detects the signal received from the receiver 456. The receive processor 452 processes the baseband signal output by the MIMO detector 472 to obtain the second signaling.
In uplink transmission, the processing related to the user equipment (UE 450) may include:
a data source 467 provides upper layer packets to the controller/processor 490, the controller/processor 490 providing packet header compression, encryption, packet segmentation concatenation and reordering, and demultiplexing of the multiplex between logical and transport channels to implement L2 layer protocols for the user plane and the control plane; the upper layer packet may include data or control information, such as UL-SCH (Uplink Shared Channel);
the controller/processor 490 may be associated with a memory 480 that stores program codes and data. Memory 480 may be a computer-readable medium;
controller/processor 490 passes control information for uplink transmission, resulting from processing of downlink reception by receive processor 452, to transmit processor 455;
a transmit processor 455 receives the output bit stream of the controller/processor 490, 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 configured to convert the baseband signals provided by MIMO transmit processor 471 into radio frequency signals and transmit the radio frequency signals via antenna 460; each transmitter 456 samples a respective input symbol stream to obtain a respective sampled signal stream. Each transmitter 456 further processes (e.g., converts to digital and/or 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, the processing related to the base station device (410) may comprise:
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 detection of the received signals from receiver 416, and provides MIMO detected symbols to a receive processor 442;
MIMO detector 442 outputs analog receive beamforming vectors to receiver 416;
the receive processor 412 performs various signal receive processing functions for the L1 layer (i.e., physical layer) including decoding, deinterleaving, descrambling, demodulation, and physical layer control signaling extraction, etc.;
controller/processor 440 receives the bitstream output by receive processor 412, provides packet header decompression, decryption, packet segmentation concatenation and reordering, and demultiplexing of the multiplex between logical and transport channels to implement L2 layer protocols for the user plane and control plane;
the controller/processor 440 may be associated with a memory 430 that stores program codes and data. Memory 430 may be a computer-readable medium;
controller/processor 440 passes control information for uplink transmission to receive processor 412 resulting from processing of downlink transmission by transmit processor 415;
for one embodiment, the receiver 456 receives a wireless signal on a first channel through the antenna 460 during a first time period in this application, performs analog receive beamforming, and converts the received signal into a baseband signal to provide to the receive processor 452, and the receive processor 452 performs energy detection on the baseband signal to obtain a first detected power in this application.
For one embodiment, the receiving processor 452 determines whether the first condition set and the second condition set are satisfied.
The first wireless signal in this application is generated by the transmit processor 455 or generated by the controller/processor 490. A MIMO transmit processor 471 performs multi-antenna precoding on baseband signals associated with the first wireless signals output by the transmit processor 455. The transmitter 456 converts the baseband signal provided from the MIMO transmit processor 471 into a radio frequency signal, performs analog transmit beamforming, and transmits the radio frequency signal via the antenna 460. Receiver 416 performs analog receive beamforming on the received signal received by antenna 420 to obtain a radio frequency signal associated with the first wireless signal, which is converted to a baseband signal and provided to MIMO detector 442.MIMO detector 442 performs MIMO detection on the signals received from receiver 416. The receive processor 412 processes the baseband signal output by the MIMO detector 442 to obtain the first wireless signal.
The first signaling in this application is generated by the transmit processor 455 or generated by the controller/processor 490. A MIMO transmit processor 471 performs multi-antenna precoding on the first signaling-related baseband signals output by the transmit processor 455. The transmitter 456 converts the baseband signal provided from the MIMO transmit processor 471 into a radio frequency signal, performs analog transmit beamforming, and transmits the radio frequency signal via the antenna 460. Receiver 416 may perform analog receive beamforming on the rf signals received via antenna 420 to obtain rf signals associated with the first signaling, and convert the rf signals to baseband signals for MIMO detector 442.MIMO detector 442 performs MIMO detection on the signals received from receiver 416. The receive processor 412 processes the baseband signal output by the MIMO detector 442 to obtain the first signaling.
The second signaling in this application is generated by the transmit processor 455 or by the controller/processor 490. A MIMO transmit processor 471 performs multi-antenna precoding on the second signaling-related baseband signals output by the transmit processor 455. The transmitter 456 converts the baseband signal provided from the MIMO transmit processor 471 into a radio frequency signal, performs analog transmit beamforming, and transmits the radio frequency signal via the antenna 460. The receiver 416 performs analog receive beamforming on the received signal through the antenna 420 to obtain a radio frequency signal related to the second signaling, and converts the radio frequency signal into a baseband signal to provide to the MIMO detector 442.MIMO detector 442 performs MIMO detection on the signals received from receiver 416. The receive processor 412 processes the baseband signal output from the MIMO detector 442 to obtain the second signaling.
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: performing energy detection on a first channel in a first time period to obtain first detection power; determining whether a first set of conditions and a second set of conditions are met, the first set of conditions including a condition that the first detected power is below a first power threshold, the second set of conditions including a condition that the first detected power is below a second power threshold, the first power threshold being below the second power threshold; if the first set of conditions is satisfied, transmitting a first wireless signal on a first channel within a second time period using a target spatial transmission parameter set, the target spatial transmission parameter set being either a first spatial transmission parameter set or a second spatial transmission parameter set; transmitting the first wireless signal on the first channel within the second time period using the first set of spatial transmission parameters if the first set of conditions is not satisfied but the second set of conditions is satisfied.
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: performing energy detection on a first channel in a first time period to obtain first detection power; determining whether a first set of conditions and a second set of conditions are met, the first set of conditions including a condition that the first detected power is below a first power threshold, the second set of conditions including a condition that the first detected power is below a second power threshold, the first power threshold being below the second power threshold; if the first set of conditions is satisfied, transmitting a first wireless signal on a first channel within a second time period using a target spatial transmit parameter set, the target spatial transmit parameter set being either a first spatial transmit parameter set or a second spatial transmit parameter set; transmitting the first wireless signal on the first channel within the second time period using the first set of spatial transmission parameters if the first set of conditions is not satisfied but the second set of conditions is satisfied.
As an embodiment, the UE450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, the UE450 device at least: sending a second signaling; monitoring a first wireless signal on a first channel for a first time period; wherein the second signaling is used to determine a difference between the second power threshold and the first power threshold; the first power threshold is lower than the second power threshold; the first detected power is a result of performing energy detection on the first channel over a first time period; the first set of conditions includes a condition that the first detected power is below the first power threshold; a second set of conditions includes a condition that the first detected power is below the second power threshold; if the first set of conditions is satisfied, a target set of spatial transmission parameters is used to transmit the first wireless signal on the first channel for a second time period, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; the first set of spatial transmission parameters is used to transmit the first wireless signal on the first channel for the second time period if the first set of conditions is not satisfied but the second set of conditions is satisfied.
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: sending a second signaling; monitoring a first wireless signal on a first channel for a first time period; wherein the second signaling is used to determine a difference between the second power threshold and the first power threshold; the first power threshold is lower than the second power threshold; the first detected power is a result of performing energy detection on the first channel over a first time period; a first set of conditions includes a condition that the first detected power is below the first power threshold; a second set of conditions includes a condition that the first detected power is below the second power threshold; if the first set of conditions is satisfied, a target set of spatial transmission parameters is used for transmitting the first wireless signal on the first channel for a second time period, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; the first set of spatial transmission parameters is used to transmit the first wireless signal on the first channel for the second time period if the first set of conditions is not satisfied but the second set of conditions is satisfied.
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: performing energy detection on a first channel in a first time period to obtain first detection power; determining whether a first set of conditions and a second set of conditions are met, the first set of conditions including a condition that the first detected power is below a first power threshold, the second set of conditions including a condition that the first detected power is below a second power threshold, the first power threshold being below the second power threshold; if the first set of conditions is satisfied, transmitting a first wireless signal on a first channel within a second time period using a target spatial transmit parameter set, the target spatial transmit parameter set being either a first spatial transmit parameter set or a second spatial transmit parameter set; transmitting the first wireless signal on the first channel within the second time period using the first set of spatial transmission parameters if the first set of conditions is not satisfied but the second set of conditions is satisfied.
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: performing energy detection on a first channel in a first time period to obtain first detection power; determining whether a first set of conditions and a second set of conditions are met, the first set of conditions including a condition that the first detected power is below a first power threshold, the second set of conditions including a condition that the first detected power is below a second power threshold, the first power threshold being below the second power threshold; if the first set of conditions is satisfied, transmitting a first wireless signal on a first channel within a second time period using a target spatial transmission parameter set, the target spatial transmission parameter set being either a first spatial transmission parameter set or a second spatial transmission parameter set; transmitting the first wireless signal on the first channel within the second time period using the first set of spatial transmission parameters if the first set of conditions is not satisfied but the second set of conditions is satisfied.
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: sending a second signaling; monitoring a first wireless signal on a first channel for a first time period; wherein the second signaling is used to determine a difference between the second power threshold and the first power threshold; the first power threshold is lower than the second power threshold; the first detected power is a result of performing energy detection on the first channel over a first time period; the first set of conditions includes a condition that the first detected power is below the first power threshold; a second set of conditions includes a condition that the first detected power is below the second power threshold; if the first set of conditions is satisfied, a target set of spatial transmission parameters is used to transmit the first wireless signal on the first channel for a second time period, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; the first set of spatial transmission parameters is used to transmit the first wireless signal on the first channel for the second time period if the first set of conditions is not satisfied but the second set of conditions is satisfied.
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: sending a second signaling; monitoring a first wireless signal on a first channel in a first time period; wherein the second signaling is used to determine a difference between the second power threshold and the first power threshold; the first power threshold is lower than the second power threshold; the first detected power is a result of performing energy detection on the first channel for a first time period; the first set of conditions includes a condition that the first detected power is below the first power threshold; a second set of conditions includes a condition that the first detected power is below the second power threshold; if the first set of conditions is satisfied, a target set of spatial transmission parameters is used for transmitting the first wireless signal on the first channel for a second time period, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; the first set of spatial transmission parameters is used to transmit the first wireless signal on the first channel for the second time period if the first set of conditions is not satisfied but the second set of conditions is satisfied.
As an embodiment, the UE450 corresponds to the first type communication node in the present application.
As an embodiment, the UE450 corresponds to a second type of communication node in the present application.
As an embodiment, the gNB410 corresponds to the first type communication node in the present application.
As an embodiment, the gNB410 corresponds to a second type of communication node in the present application.
For one embodiment, the receiver 416 and the receive processor 412 are used to perform energy detection in the present application.
As one embodiment, the receiving process 412 is used to determine whether a first condition set and a second condition set in the present application are satisfied.
For one embodiment, receiver 456 and receive processor 452 are used to perform energy detection in the present application.
For one embodiment, receive process 452 is used to determine whether a first condition set and a second condition set in the present application are satisfied.
As an example, at least the first three of transmit processor 415, mimo transmit processor 441, transmitter 416 and controller/processor 440 may be configured to transmit the first wireless signal in this application.
For one embodiment, at least the first three of receiver 456, MIMO detector 472, receive processor 452 and controller/processor 490 are configured to receive a first wireless signal as described herein.
As one example, at least the first three of the transmit processor 455, mimo transmit processor 471, transmitter 456, and controller/processor 490 may be used to transmit the first wireless signal in this application.
For one embodiment, at least the first three of receiver 416, mimo detector 442, receive processor 412, and controller/processor 440 are configured to receive the first wireless signal 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 used to send the first signaling in this 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 the first signaling in this application.
As one example, at least the first three of the transmit processor 455, mimo transmit processor 471, transmitter 456, and controller/processor 490 may be used to send the first signaling in this application.
For one embodiment, at least the first three of receiver 416, mimo detector 442, receive processor 412, and controller/processor 440 are configured to receive the first signaling 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 used to send the second signaling in this 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 the second signaling in this application.
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 used to send the second signaling in this application.
For one embodiment, at least the first three of the receiver 416, the mimo detector 442, the receive processor 412, and the controller/processor 440 are configured to receive the second signaling in this application.
Example 5
Embodiment 5 illustrates a wireless signal transmission flowchart, as shown in fig. 5. In fig. 5, a first type of communication node communicates with a second type of communication node. The steps identified in block F1, block F2 and block F3 of the figure are optional.
ForCommunication node C1 of the first typeThe first signaling is received in step S511, the second signaling is received in step S512, energy detection is performed on the first channel in step S513, it is determined whether the first condition set and the second condition set are satisfied in step S514, and the first wireless signal is transmitted in step S515.
ForCommunication node C2 of the second typeThe first signaling is transmitted in step S521, the second signaling is transmitted in step 522, and the first wireless signal is monitored on the first channel in step S523.
In embodiment 5, C1 performs energy detection on a first channel in a first time period to obtain a first detection power; c1 determining whether a first condition set and a second condition set are satisfied, the first condition set including a condition that the first detected power is lower than a first power threshold, the second condition set including a condition that the first detected power is lower than a second power threshold, the first power threshold being lower than the second power threshold; if the first set of conditions is met, the step in block F3 exists, C1 transmitting the first wireless signal on the first channel for the second time period using a target set of spatial transmission parameters, the target set of spatial transmission parameters being either the first set of spatial transmission parameters or the second set of spatial transmission parameters; if the first set of conditions is not satisfied but the second set of conditions is satisfied, the step in block F3 exists, C1 transmitting the first wireless signal on the first channel within the second time period using the first set of spatial transmission parameters. C2 monitoring the first wireless signal on the first channel during the second time period.
As a sub-embodiment, the first set of conditions includes a condition that the first count is equal to P1; the second set of conditions includes a condition that the second count is equal to P2; the updating of the first count relates to whether the first detected power is below the first power threshold; the second count is updated in relation to whether the second detected power is below the second power threshold; both said P1 and said P2 are non-negative integers.
As a sub-embodiment, after the first wireless signal is transmitted by C1 on the first channel, the first count or the second count is reset by C1.
As a sub-embodiment, the update is an increment, or the update is a decrement.
As a sub-embodiment, if neither the first condition set nor the second condition set is satisfied:
-C1 performing energy detection on the first channel for a third time period, resulting in a second detection power;
-C1 determining whether a third set of conditions comprising a condition that the second detected power is below the first power threshold and a fourth set of conditions comprising a condition that the second detected power is below the second power threshold are met;
-if said third set of conditions is fulfilled, C1 transmitting said first wireless signal on said first channel for a fourth time period using said set of target spatial transmission parameters; if the third set of conditions is not satisfied but the fourth set of conditions is satisfied, C1 transmits the first wireless signal on the first channel for the fourth time period using the first set of spatial transmission parameters.
As a sub-embodiment, a first channel access procedure and a second channel access procedure are used by C1 to determine whether to transmit the first wireless signal on the first channel in the second time period, the first power threshold and the second power threshold are used by C1 for the first channel access procedure and the second channel access procedure, respectively, and the first detection power is used for the first channel access procedure and the second channel access procedure at the same time.
As a sub-embodiment, a first set of spatial receive parameters is used by C1 to perform energy detection on the first channel during the first time period, the first set of spatial receive parameters being associated with the first set of spatial transmit parameters.
As a sub-embodiment, the antenna gains corresponding to the first spatial receiving parameter set and the first spatial transmitting parameter set are the same.
As a sub-embodiment, the first spatial transmission parameter group and the second spatial transmission parameter group have different antenna gains respectively corresponding to them.
As a sub-embodiment, the antenna gain corresponding to the first spatial transmission parameter set is smaller than the antenna gain corresponding to the second spatial transmission parameter set.
As a sub-embodiment, a difference between an antenna gain corresponding to the first set of spatial transmission parameters and an antenna gain corresponding to the second set of spatial transmission parameters is used to determine the first power threshold or the second power threshold.
As a sub-embodiment, the step in block F1 exists, and the first signaling is used by C1 to determine at least one of { configuration information of the first wireless signal, target spatial reception parameter set }, the configuration information includes at least one of { occupied frequency domain resource, MCS, NDI, HARQ process number }, and the target spatial reception parameter set is associated with the target spatial transmission parameter set.
As a sub-embodiment, the step in block F2 is present, the first type of communication node is a user equipment, and the second signaling is used to determine a difference between the second power threshold and the first power threshold.
As a sub-embodiment, the first type of communication device is a UE, and the second type of communication device is a base station.
As a sub-embodiment, the first type of communication device is a base station, and the second type of communication device is a UE.
The sub-embodiments described above can be combined arbitrarily without conflict.
Example 6
Embodiment 6 illustrates another wireless signal transmission flowchart, as shown in fig. 6. In fig. 6, a first type of communication node communicates with a second type of communication node. The steps identified in blocks F1 and F2 are optional.
ForCommunication node C3 of the first typeIn step S611, a first signaling is transmitted, in step S612, a second signaling is received, in step S613, energy detection is performed on the first channel, in step S614, it is determined whether the first condition set and the second condition set are satisfied, and in step S615, a first wireless signal is transmitted.
ForCommunication node C4 of the second typeThe first signaling is received in step S621, the second signaling is sent in step S622, and the first wireless signal is monitored on the first channel in step S623.
In embodiment 6, the first signaling is used to determine at least one of { configuration information of the first wireless signal, a target spatial reception parameter set }, the configuration information including at least one of { occupied frequency domain resource, MCS, NDI, HARQ process number }, the target spatial reception parameter set being associated with the target spatial transmission parameter set; c3, executing energy detection on a first channel in a first time period to obtain first detection power; c3 determining whether a first condition set and a second condition set are met, the first condition set including a condition that the first detected power is lower than a first power threshold, the second condition set including a condition that the first detected power is lower than a second power threshold, the first power threshold being lower than the second power threshold; if the first set of conditions is satisfied, the step in block F2 exists, C3 transmitting the first wireless signal on the first channel within the second time period using a target set of spatial transmission parameters, the target set of spatial transmission parameters being either the first set of spatial transmission parameters or the second set of spatial transmission parameters; if the first set of conditions is not satisfied but the second set of conditions is satisfied, the step in block F2 exists, C3 transmitting the first wireless signal on the first channel within the second time period using the first set of spatial transmission parameters. C4 monitoring the first wireless signal on the first channel during the second time period.
As a sub-embodiment, the first set of conditions includes a condition that the first count is equal to P1; the second set of conditions includes a condition that the second count is equal to P2; the update of the first count is related to whether the first detected power is below the first power threshold; the second count is updated in relation to whether the second detected power is below the second power threshold; both said P1 and said P2 are non-negative integers.
As a sub-embodiment, the first count or the second count is reset by C3 after the first wireless signal is transmitted by C3 on the first channel.
As a sub-embodiment, the update is an increment, or the update is a decrement.
As a sub-embodiment, if neither the first condition set nor the second condition set is satisfied:
-C3 performing energy detection on the first channel for a third time period, resulting in a second detection power;
-C3 determining whether a third set of conditions and a fourth set of conditions are met, the third set of conditions comprising a condition that the second detected power is below the first power threshold, the fourth set of conditions comprising a condition that the second detected power is below the second power threshold;
-if said third set of conditions is fulfilled, C3 transmitting said first wireless signal on said first channel for a fourth time period using said target set of spatial transmission parameters; if the third set of conditions is not satisfied but the fourth set of conditions is satisfied, C3 transmitting the first wireless signal on the first channel for the fourth time period using the first set of spatial transmission parameters.
As a sub-embodiment, a first channel access procedure and a second channel access procedure are used by C3 to determine whether to send the first wireless signal on the first channel within the second time period, the first power threshold and the second power threshold are used by C3 for the first channel access procedure and the second channel access procedure, respectively, and the first detection power is used for both the first channel access procedure and the second channel access procedure.
As a sub-embodiment, a first set of spatial receive parameters is used by C3 to perform energy detection on the first channel during the first time period, the first set of spatial receive parameters being associated with the first set of spatial transmit parameters.
As a sub-embodiment, the antenna gains corresponding to the first spatial receiving parameter set and the first spatial transmitting parameter set are the same.
As a sub-embodiment, the first and second spatial transmission parameter sets have different antenna gains respectively corresponding thereto.
As a sub-embodiment, the antenna gain corresponding to the first spatial transmission parameter set is smaller than the antenna gain corresponding to the second spatial transmission parameter set.
As a sub-embodiment, a difference between an antenna gain corresponding to the first set of spatial transmission parameters and an antenna gain corresponding to the second set of spatial transmission parameters is used to determine the first power threshold or the second power threshold.
As a sub-embodiment, the step in block F1 is present, the first type of communication node is a user equipment, and the second signaling is used to determine a difference between the second power threshold and the first power threshold.
As a sub-embodiment, the first type of communication device is a UE, and the second type of communication device is a base station.
As a sub-embodiment, the first type of communication device is a base station and the second type of communication device is a UE.
The above sub-embodiments can be combined arbitrarily without conflict.
Example 7
Embodiment 7 illustrates a first spatial transmission parameter set, a second spatial transmission parameter set and a first spatial reception parameter set, as shown in fig. 7.
In embodiment 7, a first set of spatial reception parameters is used to generate a first reception beam, a first set of spatial transmission parameters is used to generate a first transmission beam, and a second set of spatial transmission parameters is used to generate a second transmission beam. The first receiving beam is used for receiving wireless signals on a first channel in a first time period and carrying out energy detection to obtain first detection power. The first and second transmit beams are used to transmit a first wireless signal. The first receive beam and the first transmit beam are both wide beams having the same center direction and the same beam gain. The second transmission beam is a narrow beam within the first transmission beam coverage angle range. The second transmit beam has a higher beam gain than the first receive beam and the first transmit beam.
As an embodiment, the same beamforming vector is used for generating the first transmit beam and the first receive beam.
As an embodiment, different beamforming vectors are used for generating the first and second transmission beams.
As an embodiment, analog beamforming is used to generate the first receive beam, the first transmit beam and the second transmit beam.
Example 8
Embodiment 8 illustrates a first condition set and a second condition set.
In embodiment 8, a first type communication device is in an idle state in step S801, determines whether transmission is required in step S802, performs energy detection in a delay time in step 803, determines whether time slots within the delay time are all first type slots in step S804, determines whether transmission is required in step S805, transmits a wireless signal using a first spatial transmission parameter set or a second spatial parameter in step S806, determines whether transmission is required to continue in step S807, determines whether time slots within the delay time are all second type free time slots in step S808, determines whether transmission is required in step S809, and transmits a wireless signal using the first spatial transmission parameter set or the second spatial transmission parameter set in step S810.
In embodiment 8, the first type of idle timeslot refers to a timeslot in which at least one detected power obtained by detecting the energy of the first channel in the time duration not shorter than 4 microseconds is smaller than a first power threshold, and the second type of idle timeslot refers to a timeslot in which at least one detected power obtained by detecting the energy of the first channel in the time duration not shorter than 4 microseconds is smaller than a second power threshold, where the first power threshold is smaller than the second power threshold. The time length of one slot is 9 microseconds. One delay time comprises at least 2 time slots, wherein the time slots are consecutive in time domain except for the first time slot, and the first time slot and the second time slot have a 7 microsecond interval between them.
In example 8, the first set of conditions in the present application consists of the following conditions:
1) The judgment in the step S804 is yes;
2) The determination of step S805 is yes.
The second set of conditions in this application consists of:
1) The judgment in the step S804 is NO;
2) The judgment in step S808 is yes;
3) The determination at step S809 is yes.
The first time period is a time duration of not less than 4 microseconds for energy detection within one time slot of a delay time. And when the first type of communication equipment needs to send a wireless signal on a first channel, performing energy detection within the delay time of the first time period. If the first condition set is met, the first type communication node transmits the wireless signals by adopting a first space transmission parameter group or a second space transmission parameter group. The second type of communication node transmits the wireless signal using the first set of spatial transmission parameters if the second set of conditions is satisfied.
As an embodiment, the first and second sets of spatial parameters are used to generate first and second transmission beams, respectively, wherein a beamforming gain of the first transmission beam is smaller than a beamforming gain of the second transmission beam.
As an embodiment, the first type of communication device is a UE.
As an embodiment, the first type of communication device is a base station.
Example 9
Example 9 illustrates the first count and the second count, as shown in fig. 9. The flowchart in fig. 9 is used for both the first count and the second count.
In embodiment 9, for the first count, the first type communication device sets an initial value of the first count in S901, determines in S902 whether the first count is equal to 0, subtracts 1 from the first count in S903, performs energy detection in an additional slot in step S904, determines in step 905 whether the additional slot is a first type free slot, performs energy detection in an additional delay time until a non-first type free slot is detected in the additional delay time or the slots in the additional delay time are all first type free slots, determines in step 907 whether the slots in the additional delay time are all first type free slots, and transmits the wireless signal using a target spatial transmission parameter set in step 908, the target spatial transmission parameter set being the first spatial transmission parameter set or the second spatial transmission parameter set.
In embodiment 9, for the second count, the second type communication device sets an initial value of the second count in S901, determines in S902 whether the second count is equal to 0, decrements the second count by 1 in S903, performs energy detection in an additional slot in S904, determines in step 905 whether the additional slot is a second type free slot, performs energy detection in an additional delay time until a non-second type free slot is detected in the additional delay time or the slots in the additional delay time are all second type free slots, determines in step 907 whether the slots in the additional delay time are all second type free slots, and transmits the radio signal using the first spatial transmission parameter group in step 908.
In embodiment 9, the first type of idle timeslot refers to a timeslot in which at least one detected power obtained by detecting the energy of the first channel in the time duration not shorter than 4 microseconds is smaller than a first power threshold, and the second type of idle timeslot refers to a timeslot in which at least one detected power obtained by detecting the energy of the first channel in the time duration not shorter than 4 microseconds is smaller than a second power threshold, where the first power threshold is smaller than the second power threshold. The time length of one slot is 9 microseconds. An additional delay time comprises at least 2 time slots, wherein the time slots are consecutive in the time domain except for the first time slot, and the first time slot and the second time slot have a 7 microsecond interval therebetween.
In embodiment 9, the first type communication device performs S901 and S902; if the judgment of the S902 is yes, executing S908 and S901 in sequence; if the judgment of the S902 is negative, executing S903, S904 and S905 in sequence; if the judgment of the S905 is yes, executing S902; if the judgment of the S905 is negative, executing S906 and S907 in sequence; if the judgment of the S907 is negative, the S906 and the S907 are executed in sequence; if the determination at S907 is yes, S902 is performed.
In embodiment 9, a first set of conditions in the present application includes that the first count is equal to 0, the first set of conditions is satisfied, and the first type of communication device transmits a wireless signal using the target spatial transmission parameter group; a second set of conditions in this application includes that the second count is equal to 0, the second set of conditions is satisfied, and the second type of communication device transmits wireless signals using the first set of spatial transmission parameters.
As an example, the first time period in this application is a time duration for energy detection in one additional time slot.
As an embodiment, the first time period in this application is a time duration for energy detection within a time slot of an additional delay time.
As an example, the first channel in this application is a frequency band for energy detection in example 9.
As an embodiment, the first and second sets of spatial parameters are used to generate first and second transmission beams, respectively, wherein a beamforming gain of the first transmission beam is smaller than a beamforming gain of the second transmission beam.
As an embodiment, the first type of communication device is a UE.
As an embodiment, the first type of communication device is a base station.
Example 10
Embodiment 10 illustrates a first channel access procedure and a second channel access procedure, as shown in fig. 10. The flow chart of fig. 10 is used for both the first channel access procedure and the second channel access procedure.
In embodiment 10, for the first channel access process, the first type communication device is in an idle state in step S1001, determines whether transmission is required in step S1002, performs energy detection in step S1003 for a delay time, determines in step S1004 whether the time slots within the delay time are all idle time slots of the first type, performs energy detection in step S1005 for a delay time, determines in step S1006 whether the time slots within the delay time are all idle time slots of the first type, sets an initial value of the first count in step S1007, determines in step S1008 whether the first count is equal to 0, subtracts the first count by one in step S1009, performs energy detection in an additional time slot in step S1010, determines in step S1011 whether the additional time slot is an idle time slot of the first type, performs energy detection in step S1012 for an additional delay time until a non-idle time slot within the additional delay time is detected, or determines in step S101s 1012 whether the time slot within the additional delay time is an idle time slot of the first type, determines in step S1013 whether the additional delay time slot is an idle time slot of the first type, determines in step S101s 1014 whether the first channel access time set of a transmission target signal parameter is a transmission target time, determines in step S1015, and determines in step S1014 whether the second channel access time set of the transmission is a transmission target signal transmission target set.
In embodiment 10, for the second channel access process, the first type communication device is in an idle state in step S1001, determines whether transmission is required in step S1002, performs energy detection in step S1003 for a delay time, determines in step S1004 whether the time slots within the delay time are all idle time slots of the second type, performs energy detection in step S1005 for a delay time, determines in step S1006 whether the time slots within the delay time are all idle time slots of the second type, sets an initial value of the second count in step S1007, determines in step S1008 whether the second count is equal to 0, decrements the second count in step S1009, performs energy detection in an additional time slot in step S1010, determines in step S1011 whether the additional time slot is an idle time slot of the second type, performs energy detection in step S1012 for an additional delay time until a non-idle time slot of the second type is detected in the additional delay time, or determines in step S1011013 whether the time slot within the additional delay time is an idle time slot of the second type, determines in step S1011013 whether the additional time slot is an idle time slot of the additional delay time slot, determines in step S1015 whether the additional time slot is an idle time slot of the transmission is a wireless signal transmission required for the second channel access process, and determines in step S1015, and determines in step S1017 whether the additional time slot of the step S1015 is a wireless signal transmission required for the wireless signal.
In embodiment 10, the first type of idle timeslot refers to a timeslot in which at least one detected power obtained by detecting the energy of the first channel in the presence of a time duration not shorter than 4 microseconds is smaller than a first power threshold, and the second type of idle timeslot refers to a timeslot in which at least one detected power obtained by detecting the energy of the first channel in the presence of a time duration not shorter than 4 microseconds is smaller than a second power threshold, where the first power threshold is smaller than the second power threshold. The time length of one slot and one additional slot is 9 microseconds. One additional delay time comprises at least 2 time slots, wherein the time slots are consecutive in the time domain except for the first time slot, and the first time slot and the second time slot have a 7 microsecond interval therebetween.
In embodiment 10, the first type communication device performs S1001 and S1002 in this order; if the judgment of the S1002 is negative, executing S1001; if the judgment of S1002 is yes, then S1003 and S1004 are executed in sequence; if the judgment of S1004 is yes, executing S1014; if the judgment of S1014 is NO, executing S1001; if the judgment in S1014 is yes, then S1015 is executed; if the judgment of S1015 is NO, then S1016 and S1017 are executed in sequence; if the judgment at S1015 is yes, S1017 is performed; if the judgment of S1017 is no, executing S1001; if the judgment at S1017 is yes, S1005 and S1006 are executed in sequence; if the judgment of S1004 is yes, S1005 and S1006 are executed in order; if the judgment of the S1006 is no, executing S1005 and S1006 in sequence; if the judgment of S1006 is yes, S1007 and S1008 are executed in sequence; if the judgment of S1008 is yes, S1014 is executed; if the judgment in S1008 is no, then S1009, S1010 and S1011 are executed in order; if the judgment in S1011 is yes, S1008 is executed; if the judgment of S1011 is no, S1012 and S1013 are sequentially executed; if the judgment of S1013 is yes, S1008 is performed; if the determination of S1013 is no, S1012 and S1013 are sequentially executed.
The first set of conditions in this application includes only conditions for the first channel access procedure; the second set of conditions in this application includes only conditions for the second channel access procedure.
As an embodiment, the first set of conditions in the present application includes: the determination at S1004 is yes, the determination at S1014 is yes, and the determination at S1015 is no; .
As an embodiment, the second set of conditions in the present application includes: the determination in S1004 is yes, the determination in S1014 is yes, and the determination in S1015 is no.
As an embodiment, the first set of conditions in this application includes that the first count is equal to 0.
As an embodiment, the second set of conditions in this application includes that the second count is equal to 0.
As an embodiment, the first time period in this application is a time duration for energy detection in one time slot.
As an embodiment, the first time period in this application is a time duration for energy detection within one time slot of one delay time.
As an example, the first time period in this application is a time duration for energy detection in one additional time slot.
As an embodiment, the first time period in this application is a time duration for energy detection within a time slot of an additional delay time.
As an example, the first channel in this application is a frequency band for energy detection in example 10.
As an embodiment, the first and second sets of spatial parameters are used to generate first and second transmission beams, respectively, wherein a beamforming gain of the first transmission beam is smaller than a beamforming gain of the second transmission beam.
As an embodiment, the first type of communication device is a UE.
As an embodiment, the first type of communication device is a base station.
Example 11
Embodiment 11 illustrates an antenna structure of a first type communication node device, as shown in fig. 11. As shown in fig. 11, the first type of communication node device is equipped with M RF chains, RF chain #1, RF chain #2, \8230, RF chain # M. The M RF chains are connected to a baseband processor. The user equipment is a first type of communication equipment in the present application.
As an embodiment, a bandwidth supported by any one of the M RF chains does not exceed a bandwidth of a sub-band in which the first type communication node is configured.
As an embodiment, M1 RF chains of the M RF chains are superimposed through Antenna Virtualization (Virtualization) to generate an Antenna Port (Antenna Port), the M1 RF 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 RF chain, and different antenna groups correspond to different RF chains. Mapping coefficients of 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. And the corresponding analog beamforming vectors of the M1 antenna groups are arranged diagonally to form an analog beamforming matrix of the antenna port. The mapping coefficients of the M1 antenna groups to the antenna ports constitute digital beamforming vectors of the antenna ports.
As an embodiment, the spatial transmission parameter set and the spatial reception parameter set are used for a state of a corresponding antenna switch and a coefficient of a phase shifter.
As an embodiment, the set of spatial transmit parameters and the set of spatial receive parameters are used for beamforming coefficients corresponding to a baseband.
As an example, antenna switches may be used to control the beam width, the greater the working antenna spacing, the wider the beam.
As an embodiment, the M1 RF chains belong to the same panel.
As an example, the M1 RF chains are QCL (Quasi Co-Located).
As an embodiment, M2 RF chains of the M RF chains generate one transmit beam or one receive beam through antenna Virtualization (Virtualization) superposition, the M2 RF 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 RF chain, and different antenna groups correspond to different RF chains. The mapping coefficients of the antennas included in any one of the M2 antenna groups to the receive beam form an analog beamforming vector of the receive beam. And the corresponding analog beamforming vectors of the M2 antenna groups are arranged diagonally to form an analog beamforming matrix of the receiving beam. The mapping coefficients of the M2 antenna groups to the receive beam constitute a digital beamforming vector of the receive beam.
As an embodiment, the M1 RF chains belong to the same panel.
As an embodiment, the M2 RF chains are QCL.
As an example, the directions of the analog beams formed by the M RF chains are shown as beam direction #1, beam direction #2, beam direction # M-1, and beam direction # M in fig. 11, respectively.
As an embodiment, the sum of the number of layers configured by the first type of communication node on each of the parallel sub-bands is less than or equal to M.
As an embodiment, the sum of the number of antenna ports configured by the first type communication node on each of the parallel sub-bands is less than or equal to M.
As an embodiment, for each of the parallel sub-bands, the layer-to-antenna port mapping is related to both the number of layers and the number of antenna ports.
As an embodiment, 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 an embodiment, a layer is mapped onto multiple antenna ports.
Example 12
Embodiment 12 is a block diagram illustrating a processing apparatus in a first type of communication node device, as shown in fig. 12. In fig. 12, the first type of communication node device 1200 is mainly composed of a first receiver module 1201, a first processor module 1202 and a first transmitter module 1203.
In embodiment 12, the first receiver module 1201 performs energy detection on a first channel in a first time period, to obtain a first detection power; the first handler module 1202 determines whether a first set of conditions and a second set of conditions are satisfied, the first set of conditions including a condition that the first detected power is below a first power threshold, the second set of conditions including a condition that the first detected power is below a second power threshold, the first power threshold being below the second power threshold; if the first set of conditions is met, the first transmitter module 1203 transmits the first wireless signal on the first channel within the second time period using a target spatial transmission parameter set, which is the first spatial transmission parameter set or the second spatial transmission parameter set; if the first set of conditions is not met but the second set of conditions is met, the first transmitter module 1203 transmits the first wireless signal on the first channel within the second time period using the first set of spatial transmission parameters.
As an embodiment, the first set of conditions includes a condition that the first count is equal to P1; the second set of conditions includes a condition that the second count is equal to P2; the update of the first count is related to whether the first detected power is below the first power threshold; the update of the second count is related to whether the second detected power is below the second power threshold; both said P1 and said P2 are non-negative integers.
For one embodiment, the first handler module 1202 resets the first count or the second count after the first wireless signal is transmitted on the first channel.
As an embodiment, the update is an increment, or the update is a decrement.
As an embodiment, if neither the first condition set nor the second condition set is satisfied, the first receiver module 1201 performs energy detection on the first channel for a third time period, resulting in a second detection power; the first handler module determining whether a third condition set and a fourth condition set are satisfied, the third condition set including a condition that the second detected power is lower than the first power threshold, the fourth condition set including a condition that the second detected power is lower than the second power threshold; if the third set of conditions is met, the first transmitter module 1203 transmits the first wireless signal on the first channel for a fourth time period using the set of target spatial transmission parameters; if the third set of conditions is not met but the fourth set of conditions is met, the first transmitter module 1203 transmits the first wireless signal on the first channel for the fourth time period using the first set of spatial transmission parameters.
As an embodiment, a first channel access procedure and a second channel access procedure are used to determine whether to transmit the first wireless signal on the first channel within the second time period, the first power threshold and the second power threshold are used for the first channel access procedure and the second channel access procedure, respectively, and the first detection power is used for the first channel access procedure and the second channel access procedure at the same time.
As an embodiment, a first set of spatial receive parameters is used to perform energy detection on the first channel for the first time period, the first set of spatial receive parameters being associated with the first set of spatial transmit parameters.
In one embodiment, the first spatial receiving parameter set and the first spatial transmitting parameter set have the same antenna gain.
In one embodiment, the first and second sets of spatial transmission parameters have different antenna gains.
In one embodiment, an antenna gain corresponding to the first spatial transmission parameter set is smaller than an antenna gain corresponding to the second spatial transmission parameter set.
As an embodiment, a difference between an antenna gain corresponding to the first set of spatial transmission parameters and an antenna gain corresponding to the second set of spatial transmission parameters is used to determine the first power threshold or the second power threshold.
For an embodiment, the first transmitter module 1203 transmits a first signaling, or the first receiver module 1201 receives the first signaling; wherein the first signaling is used to determine at least one of { configuration information of the first wireless signal, a target spatial reception parameter set }, the configuration information including at least one of { occupied frequency domain resource, MCS, NDI, HARQ process number }, the target spatial reception parameter set being associated with the target spatial transmission parameter set.
For one embodiment, the first receiver module 1201 receives a second signaling; wherein the first type of communication node is a user equipment and the second signaling is used to determine a difference between the second power threshold and the first power threshold.
As an example, the first type of communication node device is a user equipment, and the first receiver module 1201 includes at least two of { receiver 456, receive processor 452, mimo detector 472, controller/processor 490} in example 4.
As an embodiment, the first type of communication node device is a user equipment, and the first processor module 1202 includes at least the former one of { transmit processor 455, controller/processor 490} in embodiment 4.
As an embodiment, the first kind of communication node device is a user equipment, and the first transmitter module 1203 comprises at least the first two of { transmitter 456, transmission processor 455, mimo transmission processor 471, controller/processor 490} in embodiment 4.
For one embodiment, the first type of communication node device is a base station, and the first receiver module 1201 includes at least the first two of { receiver 416, receive processor 412, mimo detector 442, controller/processor 440} in embodiment 4.
As an embodiment, the first type of communication node device is a base station, and the first processor module 1202 includes at least the former one of { the transmission processor 415, the controller/processor 440} in embodiment 4.
As an embodiment, the first kind of communication node device is a base station, and the first transmitter module 1203 includes at least the first two of { transmitter 416, transmission processor 415, mimo transmission processor 441, controller/processor 440} in embodiment 4.
Example 13
Embodiment 13 is a block diagram illustrating a processing apparatus in a second type of communication node device, as shown in fig. 13. In fig. 13, a second type of communication node device 1300 is mainly composed of a second transmitter module 1301 and a second receiver module 1302.
In embodiment 13, the second transmitter module 1301 transmits the second signaling; the second receiver module 1302 monitors the first wireless signal on the first channel for a second time period.
In embodiment 13, the second signaling is used to determine a difference between the second power threshold and the first power threshold; the first power threshold is lower than the second power threshold; the first detected power is a result of performing energy detection on the first channel for a first time period; the first set of conditions includes a condition that the first detected power is below the first power threshold; a second set of conditions includes a condition that the first detected power is below the second power threshold; if the first set of conditions is satisfied, a target set of spatial transmission parameters is used to transmit the first wireless signal on the first channel within the second time period, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; the first set of spatial transmission parameters is used to transmit the first wireless signal on the first channel for the second time period if the first set of conditions is not satisfied but the second set of conditions is satisfied.
As an embodiment, the second type of communication node device is a base station.
For one embodiment, the second type of communication node device is a user equipment, and the second transmitter module 1301 comprises at least two of { transmitter 456, transmit processor 455, mimo transmit processor 471, controller/processor 490} in embodiment 4.
As an embodiment, the second type of communication node device is a user equipment, and the second receiver module 1302 comprises at least the first two of { receiver 456, receive processor 452, mimo detector 472, controller/processor 490} in embodiment 4.
For one embodiment, the second type of communication node is a base station, and second transmitter module 1301 includes at least two of { transmitter 416, transmit processor 415, mimo transmit processor 441, controller/processor 440} in embodiment 4.
For one embodiment, the second type of communication node is a base station, and the first receiver module 1302 includes at least two of { receiver 416, receive processor 412, mimo detector 442, controller/processor 440} in embodiment 4.
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 foregoing embodiments may be implemented in the form of hardware, or may be implemented in the form of software functional modules, and the present application is not limited to any specific combination of software and hardware. UE and terminal in this application include but not limited to unmanned aerial vehicle, communication module on the unmanned aerial vehicle, remote control plane, the aircraft, small aircraft, the cell-phone, the panel computer, the notebook, vehicle-mounted Communication equipment, wireless sensor, network card, thing networking terminal, the RFID terminal, NB-IOT terminal, MTC (Machine Type Communication ) terminal, eMTC (enhanced MTC) terminal, the data card, network card, vehicle-mounted Communication equipment, low-cost cell-phone, equipment such as low-cost panel computer. The base station 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, 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 (32)

1. A method in a first type of communication node for wireless communication, comprising
-performing energy detection on a first channel during a first time period, resulting in a first detected power;
-determining whether a first set of conditions and a second set of conditions are met, the first set of conditions comprising conditions that the first detected power is below a first power threshold, the second set of conditions comprising conditions that the first detected power is below a second power threshold, the first power threshold being below the second power threshold;
-if the first set of conditions is met, transmitting a first wireless signal on a first channel over a second time period with a target set of spatial transmission parameters, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; transmitting the first wireless signal on the first channel within the second time period using the first set of spatial transmission parameters if the first set of conditions is not satisfied but the second set of conditions is satisfied; the first and second condition sets belong to a first channel access procedure and a second channel access procedure, respectively, and the first and second power thresholds are used for the first and second channel access procedures, respectively.
2. The method of claim 1, wherein the first set of conditions includes a condition that a first count is equal to P1; the second set of conditions includes a condition that a second count is equal to P2; the update of the first count is related to whether the first detected power is below the first power threshold; the update of the second count relates to whether a second detected power is below the second power threshold; both said P1 and said P2 are non-negative integers; the first count and the second count are used for the first channel access procedure and the second channel access procedure, respectively.
3. The method of claim 2, comprising
-after the first wireless signal is transmitted on the first channel, the first count or the second count is reset.
4. A method according to claim 2 or 3, characterized in that the update is an increment or the update is a decrement.
5. The method of any of claims 1 to 3, comprising, if neither of the first set of conditions nor the second set of conditions is satisfied
-performing energy detection on the first channel for a third time period resulting in a second detected power;
-determining whether a third set of conditions and a fourth set of conditions are met, the third set of conditions comprising conditions that the second detected power is below the first power threshold, the fourth set of conditions comprising conditions that the second detected power is below the second power threshold;
-if the third set of conditions is met, transmitting the first wireless signal on the first channel for a fourth time period using the set of target spatial transmission parameters; transmitting the first wireless signal on the first channel for the fourth time period using the first set of spatial transmission parameters if the third set of conditions is not satisfied but the fourth set of conditions is satisfied.
6. A method according to any one of claims 1 to 3, wherein a first channel access procedure and a second channel access procedure are used to determine whether to transmit the first wireless signal on the first channel within the second time period, the first and second power thresholds being used for the first and second channel access procedures, respectively, and the first detected power being used for both the first and second channel access procedures.
7. The method according to any of claims 1 to 3, wherein a first set of spatial reception parameters is used for performing energy detection on the first channel within the first time period, the first set of spatial reception parameters being associated with the first set of spatial transmission parameters.
8. The method according to any of claims 1 to 3, wherein the antenna gains corresponding to the first spatial receiving parameter set and the first spatial transmitting parameter set respectively are the same.
9. The method according to any of claims 1 to 3, wherein the first and second sets of spatial transmission parameters respectively correspond to different antenna gains.
10. The method according to any of claims 1 to 3, wherein the antenna gain for the first set of spatial transmission parameters is smaller than the antenna gain for the second set of spatial transmission parameters.
11. The method according to any of claims 1 to 3, wherein a difference between an antenna gain corresponding to the first set of spatial transmission parameters and an antenna gain corresponding to the second set of spatial transmission parameters is used for determining the first power threshold or the second power threshold.
12. A method according to any one of claims 1 to 3, characterized by comprising
-transmitting first signaling, or receiving first signaling;
wherein the first signaling is used to determine at least one of configuration information and a target spatial reception parameter set of the first wireless signal, the configuration information includes at least one of occupied frequency domain resources, MCS, NDI, and HARQ process number, and the target spatial reception parameter set is associated with the target spatial transmission parameter set.
13. The method according to any one of claims 1 to 3, comprising:
-receiving second signaling;
wherein the first type of communication node is a user equipment and the second signaling is used to determine a difference between the second power threshold and the first power threshold.
14. Method according to any of the claims 1 to 3, wherein the communication node of the first type is a user equipment or the communication node of the first type is a base station.
15. A method in a second type of communication node for wireless communication, comprising
-transmitting a second signaling;
-monitoring a first wireless signal on a first channel for a second time period;
wherein the second signaling is used to determine a difference between a second power threshold and a first power threshold; the first power threshold is lower than the second power threshold; the first detected power is a result of performing energy detection on the first channel for a first time period; the first set of conditions includes a condition that the first detected power is below the first power threshold; a second set of conditions includes a condition that the first detected power is below the second power threshold; if the first set of conditions is satisfied, a target set of spatial transmission parameters is used to transmit the first wireless signal on the first channel within the second time period, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; if the first set of conditions is not satisfied but the second set of conditions is satisfied, the first set of spatial transmission parameters is used to transmit the first wireless signal on the first channel for the second time period; the first and second condition sets belong to a first and second channel access procedure, respectively, the first and second power thresholds being used for the first and second channel access procedures, respectively.
16. The method of claim 15, wherein the communication node of the second type is a base station.
17. A first type of communication node device for wireless communication, comprising
-a first receiver module performing energy detection on a first channel during a first time period resulting in a first detected power;
-a first handler module to determine whether a first set of conditions and a second set of conditions are met, the first set of conditions comprising conditions that the first detected power is below a first power threshold, the second set of conditions comprising conditions that the first detected power is below a second power threshold, the first power threshold being below the second power threshold;
-a first transmitter module to transmit a first wireless signal on a first channel over a second time period with a target set of spatial transmission parameters if the first set of conditions is met, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; transmitting the first wireless signal on the first channel within the second time period using the first set of spatial transmission parameters if the first set of conditions is not satisfied but the second set of conditions is satisfied; the first and second condition sets belong to a first and second channel access procedure, respectively, the first and second power thresholds being used for the first and second channel access procedures, respectively.
18. The first type of communications node device of claim 17, wherein said first set of conditions includes a condition that a first count is equal to P1; the second set of conditions includes a condition that a second count is equal to P2; the update of the first count is related to whether the first detected power is below the first power threshold; the update of the second count relates to whether a second detected power is below the second power threshold; both said P1 and said P2 are non-negative integers; the first count and the second count are used for the first channel access procedure and the second channel access procedure, respectively.
19. The first class of communication node devices of claim 18, wherein the first processor module resets the first count or the second count after the first wireless signal is transmitted on the first channel.
20. The first type of communication node device according to claim 18 or 19, wherein the update is an increment or the update is a decrement.
21. The first type of communication node device according to any of claims 17 to 19, wherein if neither the first nor the second set of conditions is met, the first receiver module performs energy detection on the first channel for a third time period, resulting in a second detected power;
the first handler module determining whether a third set of conditions and a fourth set of conditions are satisfied, the third set of conditions including a condition that the second detected power is below the first power threshold, the fourth set of conditions including a condition that the second detected power is below the second power threshold;
if the third set of conditions is satisfied, the first transmitter module transmitting the first wireless signal on the first channel for a fourth time period using the target spatial transmission parameter set;
if the third set of conditions is not satisfied but the fourth set of conditions is satisfied, the first transmitter module transmits the first wireless signal on the first channel for the fourth time period using the first set of spatial transmission parameters.
22. The first class of communication node device according to any of claims 17 to 19, wherein a first channel access procedure and a second channel access procedure are used for determining whether to transmit the first wireless signal on the first channel within the second time period, wherein the first power threshold and the second power threshold are used for the first channel access procedure and the second channel access procedure, respectively, and wherein the first detected power is used for both the first channel access procedure and the second channel access procedure.
23. The first type of communication node device according to any of claims 17 to 19, wherein a first set of spatial receive parameters is used for performing energy detection on the first channel during the first time period, the first set of spatial receive parameters being associated with the first set of spatial transmit parameters.
24. The first-type communication node apparatus according to any one of claims 17 to 19, wherein the antenna gains corresponding to the first spatial receiving parameter set and the first spatial transmitting parameter set are the same.
25. The first-class communication node device according to any one of claims 17 to 19, wherein antenna gains corresponding to the first and second spatial transmission parameter sets are different.
26. The first type of communication node device according to any of claims 17 to 19, wherein the antenna gain for the first set of spatial transmission parameters is smaller than the antenna gain for the second set of spatial transmission parameters.
27. The first type of communication node device according to any of claims 17 to 19, wherein a difference between an antenna gain corresponding to the first set of spatial transmission parameters and an antenna gain corresponding to the second set of spatial transmission parameters is used for determining the first power threshold or the second power threshold.
28. The first type of communication node device according to any of claims 17 to 19, wherein the first transmitter module transmits first signaling or the first receiver module receives first signaling; wherein the first signaling is used to determine at least one of configuration information and a target space receiving parameter group of the first wireless signal, the configuration information includes at least one of occupied frequency domain resources, MCS, NDI, and HARQ process number, and the target space receiving parameter group is associated with the target space transmitting parameter group.
29. The first type of communication node device according to any of claims 17 to 19, wherein the first receiver module receives second signaling; wherein the first type of communication node is a user equipment and the second signaling is used to determine a difference between the second power threshold and the first power threshold.
30. The first type of communication node arrangement according to any of claims 17 to 19, wherein said first type of communication node is a user equipment or said first type of communication node is a base station.
31. A second type of communication node device for wireless communication, comprising
-a second transmitter module for transmitting second signaling;
-a second receiver module monitoring the first wireless signal on the first channel for a second time period;
wherein the second signaling is used to determine a difference between a second power threshold and a first power threshold; the first power threshold is lower than the second power threshold; the first detected power is a result of performing energy detection on the first channel over a first time period; the first set of conditions includes a condition that the first detected power is below the first power threshold; a second set of conditions includes a condition that the first detected power is below the second power threshold; if the first set of conditions is satisfied, a target set of spatial transmission parameters is used for transmitting the first wireless signal on the first channel for the second time period, the target set of spatial transmission parameters being either a first set of spatial transmission parameters or a second set of spatial transmission parameters; if the first set of conditions is not satisfied but the second set of conditions is satisfied, the first set of spatial transmission parameters is used to transmit the first wireless signal on the first channel within the second time period; the first and second condition sets belong to a first channel access procedure and a second channel access procedure, respectively, and the first and second power thresholds are used for the first and second channel access procedures, respectively.
32. The second type of communication node device of claim 31, wherein the second type of communication node is a base station.
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