CN110167166B

CN110167166B - Method and device for wireless communication in base station and user equipment

Info

Publication number: CN110167166B
Application number: CN201810152323.0A
Authority: CN
Inventors: 陈晋辉; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2018-02-14
Filing date: 2018-02-14
Publication date: 2022-12-27
Anticipated expiration: 2038-02-14
Also published as: CN110167166A

Abstract

The application discloses a method and a device for wireless communication in a base station and user equipment. The method comprises the steps that user equipment receives a first control signal, wherein the first control signal indicates K candidate physical control channels corresponding to a first time-frequency resource index; receiving a second control signal indicating at least one of a first time slot and a second time slot; monitoring the K candidate physical control channels on a first subset of time-frequency resources and a second subset of time-frequency resources, the first subset of time-frequency resources and the second subset of time-frequency resources being time-frequency resources corresponding to the first time slot index and the second time slot index, respectively. The time-frequency resources occupied by the physical control channel on different time slots, subframes or frames or the adopted modulation coding scheme are configured more flexibly.

Description

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

Technical Field

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

Background

In a conventional 3GPP (3 rd Generation Partner Project) LTE (Long-term Evolution) system, data transmission can only occur on a licensed spectrum, however, with a drastic increase in traffic, especially in some urban areas, the licensed spectrum may be difficult to meet the traffic demand. Communication over unlicensed spectrum in Release 13 and Release 14 was introduced by the cellular system and used for transmission of downlink and uplink data. To ensure compatibility with other Access technologies over unlicensed spectrum, LBT (Listen Before Talk) technology is adopted by LAA (Licensed Assisted Access) to avoid interference due to multiple transmitters simultaneously occupying the same frequency resources. A transmitter of the LTE system employs a quasi-omni antenna to perform LBT.

Currently, a technical discussion of 5G NR (New Radio Access Technology) is underway, wherein Massive MIMO (Multi-Input Multi-Output) is a research hotspot of next-generation mobile communication. In massive MIMO, multiple antennas form a beam pointing to a specific spatial direction through Beamforming (Beamforming) to improve communication quality, and when considering coverage characteristics caused by Beamforming, conventional LAA techniques need to be reconsidered, such as LBT scheme.

Disclosure of Invention

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

In view of the above, the present application discloses a solution. It should be noted that, in case of no conflict, the embodiments and features in the embodiments in the UE (User Equipment) of the present application may be applied to the base station, and vice versa. Further, the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.

The application discloses a method used in a user equipment for wireless communication, which is characterized by comprising the following steps:

receiving a first control signal, wherein the first control signal indicates K candidate physical control channels corresponding to a first time-frequency resource index, and K is a positive integer;

receiving a second control signal indicating at least one of the first time slot and the second time slot;

monitoring the K candidate physical control channels on a first subset of time-frequency resources, the first subset of time-frequency resources being time-frequency resources corresponding to the first time-frequency resource index on the first time slot;

monitoring the K candidate physical control channels on a second time-frequency resource subset, wherein the second time-frequency resource subset is a time-frequency resource corresponding to the first time-frequency resource index on the second time slot;

the number of time-frequency resource units in the first time-frequency resource subset is greater than the number of time-frequency resource units in the second time-frequency resource subset, or a first candidate physical control channel is one of the K candidate physical control channels, a first modulation and coding scheme and a second modulation and coding scheme are modulation and coding schemes that can be used for transmitting the first candidate physical control channel on the first time-frequency resource subset and the second time-frequency resource subset, respectively, and the number of bits that can be transmitted by using the first modulation and coding scheme on the same number of time-frequency resource units is less than the number of bits that can be transmitted by using the second modulation and coding scheme.

As an embodiment, it is common knowledge that the number of time-frequency resources included in a Control-Channel Element (CCE) Aggregation Level (AL) is fixed and will not be different according to different time slots, but the innovation point of the present application is that the number of time-frequency resources included in different time slots may be different.

As an embodiment, it is common knowledge that the corresponding modulation and coding schemes of a Search Space (Search Space) on different timeslots are the same, and the innovation point of the present application is that the corresponding modulation and coding schemes of a Search Space on different timeslots can be different.

As an example, one benefit of the above approach is that: and the time frequency resources occupied by the physical control channel on different time slots, subframes or frames are more flexibly configured.

As an example, another benefit of the above method is: the modulation and coding schemes used by the physical control channel on different time slots, sub-frames or frames are more flexibly configured.

According to an aspect of the application, the above method is characterized in that a first power value and a second power value are respectively effective transmit powers that the first candidate physical control channel may employ on the first time slot and on the second time slot, the first power value being smaller than the second power value.

As an example, one benefit of the above approach is that: and distributing the time-frequency resources occupied by the physical control channel according to the size of the effective transmission power, thereby more effectively utilizing the transmission power.

As an example, a further benefit of the above method is: and adjusting the modulation coding scheme adopted by the physical control channel according to the effective transmission power, thereby more effectively utilizing the transmission power.

According to an aspect of the application, the above method is characterized in that the frequency resources in the first subset of time-frequency resources and the second subset of time-frequency resources are on a first subband, a first channel access is used by the sender of the K candidate physical control channels to determine whether a radio signal can be sent on the first subband in the first time slot, a second channel access is used by the sender of the K candidate physical control channels to determine whether a radio signal can be sent on the first subband in the second time slot, a first energy detection threshold and a second energy detection threshold are used for the first channel access and the second channel access, respectively, and the first energy detection threshold is larger than the second energy detection threshold.

As an example, one benefit of the above approach is that: different energy detection thresholds are used for different channel access processes, and the different channel access processes are used for determining time-frequency resources and modulation coding schemes occupied by the physical control channel, so that the transmission efficiency of the physical control channel is improved.

According to an aspect of the application, the method is characterized in that a third and a fourth set of spatial parameters are used for the first and the second channel access, respectively, and the beam width generated using the third set of spatial parameters is larger than the beam width formed using the fourth set of spatial parameters.

As an example, one benefit of the above approach is that: energy detection is performed by adopting different beam widths, so that energy detection thresholds used for channel access are different, and subsequent directional transmission of directional LBT is facilitated.

According to an aspect of the application, the above method is characterized in that a first and a second set of spatial parameters are used for transmitting one of the K physical control channels on the first and on the second time slot, respectively.

As an example, one benefit of the above approach is that: the time frequency resources or modulation and demodulation schemes occupied by sending the physical control channel by adopting different wave beams are different, so that the transmission efficiency of the control channel is improved by utilizing the wave beam gain.

According to an aspect of the application, the above method is characterized in that the second spatial parameter set and the fourth spatial parameter set are associated.

The application discloses a method used in a wireless base station, which is characterized by comprising the following steps:

sending a first control signal, wherein the first control signal indicates K candidate physical control channels corresponding to a first time-frequency resource index, and K is a positive integer;

transmitting a second control signal indicating at least one of the first slot and the second slot;

transmitting at least one of the K candidate physical control channels on a first subset of time-frequency resources, the first subset of time-frequency resources being time-frequency resources corresponding to the first time slot of the first time-frequency resource index;

transmitting at least one of the K candidate physical control channels on a second subset of time-frequency resources, the second subset of time-frequency resources being time-frequency resources corresponding to the first time-frequency resource index on the second time slot;

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

Performing a first channel access, the first channel access being used to determine whether a wireless signal can be transmitted on a first sub-band of the first time slot;

performing a second channel access, the second channel access being used to determine whether a wireless signal can be transmitted on the first sub-band of the second time slot;

wherein frequency domain resources in the first subset of time-frequency resources and the second subset of time-frequency resources are on the first subband, a first energy detection threshold and a second energy detection threshold are used for the first channel access and the second channel access, respectively, and the first energy detection threshold is greater than the second energy detection threshold.

The application discloses a user equipment used for wireless communication, characterized by comprising:

a first receiver module, configured to receive a first control signal, where the first control signal indicates K candidate physical control channels corresponding to a first time-frequency resource index, where K is a positive integer;

a second receiver module to receive a second control signal indicating at least one of the first time slot and the second time slot;

a third receiver module that monitors the K candidate physical control channels on a first subset of time-frequency resources, the first subset of time-frequency resources being time-frequency resources corresponding to the first time slot of the first time-frequency resource index;

a fourth receiver module that monitors the K candidate physical control channels on a second subset of time-frequency resources, the second subset of time-frequency resources being time-frequency resources corresponding to the first time-frequency resource index on the second time slot;

As an embodiment, the user equipment is characterized in that a first power value and a second power value are respectively effective transmission powers that the first candidate physical control channel may adopt on the first time slot and on the second time slot, and the first power value is smaller than the second power value.

As an embodiment, the user equipment is characterized in that frequency resources in the first time-frequency resource subset and the second time-frequency resource subset are on a first sub-band, a first channel access is used by a sender of the K candidate physical control channels to determine whether a radio signal can be sent on the first sub-band of the first timeslot, a second channel access is used by a sender of the K candidate physical control channels to determine whether a radio signal can be sent on the first sub-band of the second timeslot, a first energy detection threshold and a second energy detection threshold are respectively used for the first channel access and the second channel access, and the first energy detection threshold is greater than the second energy detection threshold.

As an embodiment, the ue is characterized in that a third spatial parameter group and a fourth spatial parameter group are respectively used for the first channel access and the second channel access, and a beam width generated by using the third spatial parameter group is larger than a beam width formed by using the fourth spatial parameter group.

As an embodiment, the above user equipment is characterized in that a first spatial parameter set and a second spatial parameter set are used for transmitting one of the K physical control channels on the first time slot and on the second time slot, respectively.

As an embodiment, the user equipment is characterized in that the second spatial parameter set and the fourth spatial parameter set are associated.

The application discloses a base station device used for wireless communication, characterized by comprising:

a first transmitter module, configured to transmit a first control signal, where the first control signal indicates K candidate physical control channels corresponding to a first time-frequency resource index, and K is a positive integer;

a second transmitter module to transmit a second control signal indicating at least one of the first time slot and the second time slot;

a first transceiver module, configured to transmit at least one of the K candidate physical control channels on a first subset of time-frequency resources, where the first subset of time-frequency resources is a time-frequency resource corresponding to the first time-frequency resource index on the first time slot;

a second transceiver module, configured to transmit at least one of the K candidate physical control channels on a second subset of time-frequency resources, where the second subset of time-frequency resources is a time-frequency resource corresponding to the first time-frequency resource index on the second time slot;

As an embodiment, the base station device is characterized in that a first power value and a second power value are respectively effective transmission powers that the first candidate physical control channel may adopt on the first time slot and on the second time slot, and the first power value is smaller than the second power value.

As an embodiment, the base station device is characterized in that the first transceiver module performs a first channel access, and the first channel access is used for judging whether a wireless signal can be transmitted on a first sub-band of the first time slot or not; the second transceiver module performing a second channel access, the second channel access being used to determine whether a wireless signal can be transmitted on the first sub-band of the second time slot; wherein frequency domain resources in the first subset of time-frequency resources and the second subset of time-frequency resources are on the first subband, a first energy detection threshold and a second energy detection threshold are used for the first channel access and the second channel access, respectively, and the first energy detection threshold is greater than the second energy detection threshold.

As an embodiment, the base station device is characterized in that a third spatial parameter group and a fourth spatial parameter group are used for the first channel access and the second channel access, respectively, and a beam width generated by using the third spatial parameter group is larger than a beam width formed by using the fourth spatial parameter group.

As an embodiment, the base station apparatus described above is characterized in that a first spatial parameter set and a second spatial parameter set are used to transmit one of the K physical control channels on the first slot and on the second slot, respectively.

As an embodiment, the base station apparatus is characterized in that the second spatial parameter set and the fourth spatial parameter set are associated.

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

more flexible configuration of the time-frequency resources occupied by the physical control channel or the modulation and coding scheme used on different time slots, subframes or frames.

-using directional LBT to increase the effective transmit power with beam gain, thereby providing transmission efficiency of the physical control channel.

Drawings

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

fig. 1 shows a flow diagram of a first control signal, a second control signal, and K candidate physical control channels according to one embodiment of the application;

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

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

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

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

FIG. 6 shows a schematic diagram of a first time slot and a second time slot according to one embodiment of the present application;

fig. 7 shows a schematic diagram of a first channel access and a second channel access according to an embodiment of the application;

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

fig. 9 shows a block diagram of a processing device for use in a user equipment according to an embodiment of the present application;

fig. 10 shows a block diagram of a processing device for use in a base station according to an embodiment of the present application.

Detailed Description

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

Example 1

Embodiment 1 illustrates a first control signal and a first wireless signal according to the present application, as shown in fig. 1. In fig. 1, each block represents a step. In embodiment 1, a user equipment in the present application receives a first control signal, where the first control signal indicates K candidate physical control channels corresponding to a first time-frequency resource index, and K is a positive integer; receiving a second control signal indicating at least one of the first time slot and the second time slot; monitoring the K candidate physical control channels on a first subset of time-frequency resources, the first subset of time-frequency resources being time-frequency resources corresponding to the first time-frequency resource index on the first time slot; monitoring the K candidate physical control channels on a second time-frequency resource subset, wherein the second time-frequency resource subset is a time-frequency resource corresponding to the first time-frequency resource index on the second time slot; the number of time-frequency resource units in the first time-frequency resource subset is greater than the number of time-frequency resource units in the second time-frequency resource subset, or a first candidate physical control channel is one of the K candidate physical control channels, a first modulation and coding scheme and a second modulation and coding scheme are modulation and coding schemes that can be used for transmitting the first candidate physical control channel on the first time-frequency resource subset and the second time-frequency resource subset, respectively, and the number of bits that can be transmitted by using the first modulation and coding scheme on the same number of time-frequency resource units is less than the number of bits that can be transmitted by using the second modulation and coding scheme.

As an embodiment, the method is used for transmitting the K candidate physical control channels on the unlicensed spectrum.

As an embodiment, a licensed spectrum is used for transmitting the first control signal.

As an embodiment, a licensed spectrum is used for transmitting the second control signal.

As an embodiment, the K candidate Physical Control channels include a PDCCH (Physical Downlink Control Channel).

As an embodiment, the K candidate physical Control channels include an EPDCCH (Enhanced Downlink Control Channel).

As an embodiment, the first control signal is user equipment specific.

As an embodiment, the first control signal is higher layer signaling.

As an embodiment, the first Control signal is RRC (Radio Resource Control) signaling.

As an embodiment, one said subframe comprises a plurality of said slots.

As an embodiment, one said subframe comprises 2 said slots.

As an embodiment, the first time-frequency resource index indicates a number of resource particles in each of the first subset of time-frequency resources and the second subset of time-frequency resources.

As an embodiment, the first time-frequency resource index is an Aggregation Level (AL) index of a control channel.

In one embodiment, the first time-frequency resource index indicates a time-frequency resource location in the first subset of time-frequency resources and the second subset of time-frequency resources.

As an example, K is equal to 1.

As one example, K is greater than 1.

As an embodiment, the first subset of time-frequency resources includes P1 control channel granules, the second subset of time-frequency resources includes P2 control channel granules, P1 is a positive integer, and P2 is a positive integer smaller than P1

As an example, one of the control granules consists of 6 Resource-Element groups (REGs).

As an embodiment, one of the Resource granule groups is equal to one Resource Block (RB) on one OFDM (Orthogonal Frequency Division Multiplexing) symbol, and one of the Resource blocks includes 12 Resource granules (Resource elements).

As an embodiment, one resource granule is the smallest time-frequency resource unit, and occupies one subcarrier in the frequency domain and one OFDM symbol in the time domain.

As an embodiment, the second control signal is specific to the user equipment.

As an embodiment, the second control signal is a PDCCH.

For one embodiment, the second control signal is EPDCCH.

As an embodiment, the second control signal explicitly indicates the first time slot and the second time slot.

As an embodiment, the second control signal implicitly indicates the first time slot and the second time slot.

As an embodiment, the second control signal explicitly indicates the first time slot, which is used to determine the second time slot.

As an embodiment, the second control signal explicitly indicates the second time slot, which is used for determining the first time slot.

As one embodiment, the first slot and the second slot each include a plurality of OFDM symbols.

As an embodiment, the first slot and the second slot include the same number of OFDM symbols.

As an embodiment, the length of the first time slot and the second time slot is 0.5 microseconds.

As an embodiment, blind detection (Blind Decoding) is used to monitor the K candidate physical control channels.

As an embodiment, the user equipment is not configured to determine that any of the K candidate physical control channels are received prior to successful decoding.

As an embodiment, the number of Payload bits (Payload Size) and the modulation and coding scheme corresponding to the K candidate physical control channels are used to monitor the K candidate physical control channels.

As an embodiment, the K candidate Physical control channels indicate time-frequency resources occupied by a subsequent PDSCH (Physical Downlink Shared Channel)

As an embodiment, the K candidate Physical control channels indicate time-frequency resources occupied by a subsequent PUSCH (Physical Uplink Shared Channel).

As an embodiment, the K candidate physical control channels indicate a transmission scheme to be used for subsequent transmissions.

As an embodiment, the K candidate physical control channels indicate a subsequent retransmission scheme.

As an embodiment, one time-frequency resource unit refers to one RE.

As an embodiment, one time-frequency resource unit refers to one REG.

As an embodiment, one time-frequency resource element refers to one CCE.

As an embodiment, the modulation order of the first modulation coding scheme is smaller than the modulation order of the second modulation coding scheme.

As one embodiment, the first modulation coding scheme comprises QPSK modulation and the second modulation coding scheme comprises 16QAM modulation.

As an embodiment, the coding rate of the first modulation coding scheme is less than the coding rate of the second modulation coding scheme.

As an embodiment, the number of time-frequency resource elements in the first subset of time-frequency resources is used to determine the coding rate in the first modulation coding scheme, and the number of time-frequency resource elements in the second subset of time-frequency resources is used to determine the coding rate in the second modulation coding scheme.

As an embodiment, the number of Payload bits (Payload size) of the first candidate physical channel is X1 bit, the first subset of time-frequency resources is composed of N1 CCEs, the second subset of time-frequency resources is composed of N2 CCEs, N1 is a positive integer, N2 is a positive integer smaller than N1, a CCE is composed of M1 REGs, and an REG is composed of M2 REs, the modulation schemes in the first modulation and coding scheme and the second modulation and coding scheme are both a symbol carrying M3 bits, where M1, M2, and M3 are positive integers, the coding rate of the first modulation and coding scheme is X1/(N1M 2M 3), and the coding rate of the second modulation and coding scheme is X1/(N2M 1M2M 3).

As an embodiment, the number of time-frequency resource units in the first time-frequency resource subset and the second time-frequency resource subset is the same, the coding rates in the first modulation and coding scheme and the second modulation and coding scheme are the same, and the modulation order in the first modulation and coding scheme is smaller than the modulation order in the second modulation and coding scheme.

As an embodiment, a first power value and a second power value are respectively effective transmission powers that the first candidate physical control channel may adopt on the first time slot and on the second time slot, and the first power value is smaller than the second power value.

For one embodiment, the effective transmit power includes antenna gain.

For one embodiment, the effective transmit power includes an amplifier output power.

As one example, the unit of the effective transmit power is decibels of milliwatts (dBm).

As an embodiment, DMRSs (Demodulation Reference signals) on the first and second time slots are used to estimate the first and second power values, respectively.

As an embodiment, the ue estimates first and second received powers based on DMRSs (Demodulation Reference signals) in the first and second time slots, respectively, and subtracts a first and second path loss values from the first and second received powers to obtain the first and second power values, respectively.

As an embodiment, a CSI-RS (Channel State Information Reference Signal) is used to estimate the first and second impairment values.

As an embodiment, the first pathloss value and the second pathloss value are the same.

As an embodiment, the first pathloss value and the second pathloss value are different.

As one embodiment, the CSI-RS used to estimate the first impairment value is spatially QCL (Quasi Co-Located, class Co-Located) with the wireless signal transmitted on the first timeslot.

As one embodiment, the CSI-RS used to estimate the second pathloss value is spatially QCL with the wireless signal transmitted on the second time slot.

As an embodiment, the spatial QCL of two wireless signals means that the spatial parameters used to receive one wireless signal are used to estimate the spatial parameters used to receive the other wireless signal.

As an embodiment, the spatial QCL for two wireless signals means that the spatial parameters used to transmit one wireless signal are used to estimate the spatial parameters used to transmit the other wireless signal.

As an embodiment, the frequency resources in the first subset of time-frequency resources and the second subset of time-frequency resources are on a first sub-band, a first channel access is used by the senders of the K candidate physical control channels to determine whether a wireless signal can be sent on the first sub-band of the first timeslot, a second channel access is used by the senders of the K candidate physical control channels to determine whether a wireless signal can be sent on the first sub-band of the second timeslot, a first energy detection threshold and a second energy detection threshold are used for the first channel access and the second channel access, respectively, and the first energy detection threshold is greater than the second energy detection threshold.

As one embodiment, the first sub-band is deployed in unlicensed spectrum.

As an embodiment, the first channel access is: the sender of the K candidate physical control channels executes first type energy detection before the first time slot and judges whether a wireless signal can be sent on the first sub-band of the first time slot or not by adopting a comparison result of the first type energy detection and the first energy detection threshold value.

As an example, one time of the energy detection means: the user equipment monitors received power over a time period of a given duration.

As an example, one time of the energy detection means: the user equipment monitors received energy over a time period within a given duration.

As an example, one time of the energy detection means: the user equipment sensing (Sense) for all radio signals on a given frequency domain resource over a time period within a given duration to obtain a given power; the given frequency domain resource is a frequency band where the target time frequency resource is located.

As an example, one time of the energy detection means: the user equipment sensing (Sense) for all radio signals on a given frequency domain resource over a time period within a given duration to obtain a given energy; the given frequency domain resource is a frequency band where the target time frequency resource is located.

As an embodiment, the energy detection is an energy detection in LBT (Listen Before Talk).

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

As an embodiment, the energy detection is implemented by measuring RSSI (Received Signal Strength Indication).

As an embodiment, the detection powers obtained by the K candidate control channel senders performing the first type energy detection multiple times respectively are used to determine whether the wireless signal can be sent on the first sub-band of the first time slot.

As an embodiment, the senders of the K candidate physical control channels perform the first-type energy detection for L1 times to respectively obtain L1 detection powers, where L1 is a positive integer not less than 1.

As an embodiment, the L1 detection powers are all lower than the first energy detection threshold, and the transmitters of the K candidate physical control channels transmit wireless signals on the first sub-band of the first time slot.

As an embodiment, at least one of the L1 detected powers is above the first energy detection threshold, a transmitter of the K candidate physical control channels abstains from transmitting wireless signals on the first sub-band of the first time slot.

As an embodiment, Q1 detection powers of the L1 detection powers are all lower than the first energy detection threshold, the transmitters of the K candidate physical control channels transmit wireless signals on the first sub-band of the first time slot, and Q1 is a positive integer.

As an example, the number of the L1 detected powers that are below the first energy detection threshold is less than the Q1, and the sender of the K candidate physical control channels relinquishes sending wireless signals on the first sub-band of the first time slot.

As an example, said L1 and said Q1 are both 1.

As an embodiment, the L1 is greater than the Q1.

As an example, the L1 is equal to the Q1.

As an embodiment, there exists a time period in a time slot, where the detected power obtained by the sender of the K candidate physical control channels performing the first type energy detection is lower than the first energy detection threshold, and the time slot is called a first type idle time slot.

As an example, the length of the time slot is 16 microseconds.

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

As an example, the time period is a duration period not shorter than 4 microseconds.

As an embodiment, the first type energy detection is performed on consecutive L2 slots, where L2 is a positive integer not less than 1.

As an embodiment, the L2 time slots are all the first type of idle time slots, and the transmitters of the K candidate physical control channels transmit wireless signals on the first sub-band of the first time slot.

As an embodiment, there is at least one free time slot of the L2 time slots that is not of the first type, and the sender of the K candidate physical control channels abstains from sending wireless signals on the first sub-band of the first time slot.

As an embodiment, Q2 slots of the L2 slots are the first type of idle slots, the transmitters of the K candidate physical control channels transmit wireless signals on the first subband of the first slot, and Q2 is a positive integer.

As an embodiment, the number of the first class of free slots in the L2 slots is less than the Q2, and the sender of the K candidate physical control channels abandons sending wireless signals on the first sub-band of the first slot.

As an example, said L2 and said Q2 are both 1.

As an embodiment, said L2 is greater than said Q2.

As an example, the L2 is equal to the Q2.

As an embodiment, one delay period consists of Q1 time slots in succession, Q1 being a positive integer; there are K1 delay periods before the first slot, K1 being a positive integer.

As an example, K1 is a random number.

As an embodiment, all the time slots within the K1 delay periods are the first type of idle time slots, and the senders of the K candidate physical control channels send wireless signals on the first sub-band of the first time slot.

As an embodiment, the existence of at least one time slot within the K1 delay periods is not the first class of idle time slots, and the transmitters of the K candidate physical control channels give up transmitting wireless signals on the first sub-band of the first time slot.

As an embodiment, the second channel access is: and the sender of the K candidate physical control channels executes second type energy detection before the second time slot and judges whether a wireless signal can be sent on the first sub-band of the second time slot or not by adopting a comparison result of the second type energy detection and the second energy detection threshold.

As an embodiment, the detected powers obtained by the transmitters of the K candidate control channels performing the second type of energy detection multiple times respectively are used to determine whether the wireless signal can be transmitted on the first sub-band of the second time slot.

As an embodiment, the senders of the K candidate physical control channels perform the second type of energy detection for L1 times to respectively obtain L1 detection powers, where L1 is a positive integer not less than 1.

As an embodiment, the L1 detection powers are all lower than the second energy detection threshold, and the transmitters of the K candidate physical control channels transmit wireless signals on the first sub-band of the second slot.

As an embodiment, at least one of the L1 detected powers is higher than the second energy detection threshold, and the transmitters of the K candidate physical control channels abstain from transmitting wireless signals on the first sub-band of the second time slot.

As an embodiment, Q1 detection powers of the L1 detection powers are all lower than the second energy detection threshold, the transmitters of the K candidate physical control channels transmit wireless signals on the first sub-band of the second slot, and Q1 is a positive integer.

As an embodiment, the number of the L1 detected powers that is lower than the second energy detection threshold is smaller than the Q1, and the transmitters of the K candidate physical control channels give up transmitting wireless signals on the first sub-band of the second slot.

As an example, said L1 and said Q1 are both 1.

As an embodiment, said L1 is greater than said Q1.

As an example, the L1 is equal to the Q1.

As an embodiment, there exists a time slot in which the detection power obtained by the sender of the K candidate physical control channels performing the second type of energy detection is lower than the second energy detection threshold, and the time slot is called a second type of idle time slot.

As an embodiment, the second type of energy detection is performed on consecutive L2 slots, where L2 is a positive integer not less than 1.

As an embodiment, the L2 time slots are all idle time slots of the second type, and the transmitters of the K candidate physical control channels transmit wireless signals on the first sub-band of the second time slot.

As an embodiment, there is at least one free time slot of the second type out of the L2 time slots, and the sender of the K candidate physical control channels gives up sending wireless signals on the first sub-band of the second time slot.

As an embodiment, Q2 slots of the L2 slots are the second type of idle slots, the transmitters of the K candidate physical control channels transmit wireless signals on the first subband of the second slot, and Q2 is a positive integer.

As an embodiment, the number of the second type of idle time slots in the L2 time slots is smaller than the Q2, and the sender of the K candidate physical control channels abandons sending wireless signals on the first sub-band of the second time slot.

As an example, said L2 and said Q2 are both 1.

As an embodiment, said L2 is greater than said Q2.

As an example, the L2 is equal to the Q2.

As an example, K1 is a random number.

As an embodiment, all time slots within the K1 delay periods are idle time slots of the second type, and the transmitters of the K candidate physical control channels transmit wireless signals on the first sub-band of the second time slot.

As an embodiment, there is at least one time slot within the K1 delay periods that is not the second type of idle time slot, and the transmitters of the K candidate physical control channels give up transmitting wireless signals on the first sub-band of the second time slot.

As an embodiment, a third spatial parameter set and a fourth spatial parameter set are used for the first channel access and the second channel access, respectively, and a beam width generated by using the third spatial parameter set is larger than a beam width formed by using the fourth spatial parameter set.

As an embodiment, a first and a second set of spatial parameters are used to transmit one of the K physical control channels on the first and second time slots, respectively.

As an embodiment, the beamwidth generated using the first set of spatial parameters is larger than the beamwidth generated using the second set of spatial parameters.

As an embodiment, the second set of spatial parameters and the fourth set of spatial parameters are associated.

As an embodiment, the beams generated with the fourth set of spatial parameters cover the beams generated with the second set of spatial parameters.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2. Fig. 2 is a diagram illustrating a network architecture 200 of NR5G, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced) systems. The NR5G or LTE network architecture 200 may be referred to as EPS (Evolved packet system) 200 or some other suitable terminology. The EPS 200 may include one or more UEs (User Equipment) 201, ng-RANs (next generation radio access networks) 202, epcs (Evolved Packet Core)/5G-CNs (5G-Core Network,5G Core Network) 210, hss (Home Subscriber Server) 220, and internet services 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the EPS provides packet-switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes NR node bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol 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 the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a drone, an aircraft, a narrowband physical network device, a machine type communication device, a terrestrial vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the EPC/5G-CN210 via an S1/NG interface. The EPC/5G-CN210 includes an MME/AMF/UPF211, other MMEs/AMF/UPFs 214, an S-GW (Service Gateway) 212, and a P-GW (Packet data Network Gateway) 213.MME/AMF/UPF211 is a control node that handles signaling between UE201 and EPC/5G-CN210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a PS streaming service (PSs).

As an embodiment, the UE201 corresponds to a user equipment in this application.

As an embodiment, the gNB203 corresponds to a base station in the present application.

As an embodiment, the UE201 supports multi-antenna transmission.

As an embodiment, the gNB203 supports multiple antenna transmission.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the User Equipment (UE) and the base station equipment (gNB or eNB) in three layers: layer 1, layer 2 and layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as 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.

As an example, the radio protocol architecture in fig. 3 is applicable to the user equipment in the present application.

The radio protocol architecture of fig. 3 is applicable to the base station in the present application as an example.

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

As an embodiment, the second control signal in this application is generated in the PHY301.

As an embodiment, the second control signal in this application is generated in the RRC sublayer 306.

As an embodiment, K candidate physical control channels in this application are generated in the PHY301.

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 associated with the base station device (410) may include:

upper layer packets arrive at controller/processor 440, controller/processor 440 provides packet header compression, encryption, packet segmentation concatenation and reordering, and demultiplexing of the multiplex between logical and transport channels to implement 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);

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

controller/processor 440 informs scheduler 443 of the transmission requirement, scheduler 443 is configured to schedule the empty resource corresponding to the transmission requirement, and informs controller/processor 440 of the scheduling result;

controller/processor 440 passes control information for downlink transmission to transmit processor 415 resulting from processing of uplink reception by receive processor 412;

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

MIMO transmit processor 441 performs spatial processing (e.g., multi-antenna precoding, digital beamforming) on the data symbols, control symbols, or reference signal symbols and outputs a baseband signal to transmitter 416;

MIMO transmit processor 441 outputs analog transmit beamforming vectors to transmitter 416;

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

In the downlink transmission, the processing associated with the user equipment (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 of the signals received from receiver 456, providing a MIMO detected baseband signal to receive processor 452;

the receive processor 452 extracts analog receive beamforming related parameters to output to the MIMO detector 472, 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.

In uplink transmission, the processing associated with the user equipment (UE 450) may include:

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

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

In uplink transmissions, processing associated with a base station device (410) may include:

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

a MIMO detector 442 for MIMO detecting signals received from receiver 416, and providing MIMO detected symbols to receive processor 442;

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

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

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

controller/processor 440 passes control information for uplink transmission to receive processor 412 resulting from processing of downlink transmission by transmit processor 415;

as an embodiment, the UE450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, the UE450 device at least: receiving a first control signal, wherein the first control signal indicates K candidate physical control channels corresponding to a first time-frequency resource index, and K is a positive integer; receiving a second control signal indicating at least one of a first time slot and a second time slot; monitoring the K candidate physical control channels on a first subset of time-frequency resources, the first subset of time-frequency resources being time-frequency resources corresponding to the first time-frequency resource index on the first time slot; monitoring the K candidate physical control channels on a second time-frequency resource subset, wherein the second time-frequency resource subset is a time-frequency resource corresponding to the first time-frequency resource index on the second time slot; the number of time-frequency resource units in the first time-frequency resource subset is greater than the number of time-frequency resource units in the second time-frequency resource subset, or a first candidate physical control channel is one of the K candidate physical control channels, a first modulation and coding scheme and a second modulation and coding scheme are modulation and coding schemes that can be used for transmitting the first candidate physical control channel on the first time-frequency resource subset and the second time-frequency resource subset, respectively, and the number of bits that can be transmitted by using the first modulation and coding scheme on the same number of time-frequency resource units is less than the number of bits that can be transmitted by using the second modulation and coding scheme.

As an embodiment, the UE450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a first control signal, wherein the first control signal indicates K candidate physical control channels corresponding to a first time-frequency resource index, and K is a positive integer; receiving a second control signal indicating at least one of a first time slot and a second time slot; monitoring the K candidate physical control channels on a first subset of time-frequency resources, the first subset of time-frequency resources being time-frequency resources corresponding to the first time-frequency resource index on the first time slot; monitoring the K candidate physical control channels on a second time-frequency resource subset, wherein the second time-frequency resource subset is a time-frequency resource corresponding to the first time-frequency resource index on the second time slot; the number of time-frequency resource units in the first time-frequency resource subset is greater than the number of time-frequency resource units in the second time-frequency resource subset, or a first candidate physical control channel is one of the K candidate physical control channels, a first modulation and coding scheme and a second modulation and coding scheme are modulation and coding schemes that can be used for transmitting the first candidate physical control channel on the first time-frequency resource subset and the second time-frequency resource subset, respectively, and the number of bits that can be transmitted by using the first modulation and coding scheme on the same number of time-frequency resource units is less than the number of bits that can be transmitted by using the second modulation and coding scheme.

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 first control signal, wherein the first control signal indicates K candidate physical control channels corresponding to a first time-frequency resource index, and K is a positive integer; transmitting a second control signal indicating at least one of the first slot and the second slot; transmitting at least one of the K candidate physical control channels on a first subset of time-frequency resources, the first subset of time-frequency resources being time-frequency resources corresponding to the first time slot of the first time-frequency resource index; transmitting at least one of the K candidate physical control channels on a second subset of time-frequency resources, the second subset of time-frequency resources being time-frequency resources corresponding to the first time-frequency resource index on the second time slot; the number of time-frequency resource units in the first time-frequency resource subset is greater than the number of time-frequency resource units in the second time-frequency resource subset, or a first candidate physical control channel is one of the K candidate physical control channels, a first modulation and coding scheme and a second modulation and coding scheme are modulation and coding schemes that can be used for transmitting the first candidate physical control channel on the first time-frequency resource subset and the second time-frequency resource subset, respectively, and the number of bits that can be transmitted by using the first modulation and coding scheme on the same number of time-frequency resource units is less than the number of bits that can be transmitted by using the second modulation and coding scheme.

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 first control signal, wherein the first control signal indicates K candidate physical control channels corresponding to a first time-frequency resource index, and K is a positive integer; transmitting a second control signal indicating at least one of the first slot and the second slot; transmitting at least one of the K candidate physical control channels on a first subset of time-frequency resources, the first subset of time-frequency resources being time-frequency resources corresponding to the first time slot of the first time-frequency resource index; transmitting at least one of the K candidate physical control channels on a second subset of time-frequency resources, the second subset of time-frequency resources being time-frequency resources corresponding to the first time-frequency resource index on the second time slot; the number of time-frequency resource units in the first time-frequency resource subset is greater than the number of time-frequency resource units in the second time-frequency resource subset, or a first candidate physical control channel is one of the K candidate physical control channels, a first modulation and coding scheme and a second modulation and coding scheme are modulation and coding schemes that can be used for transmitting the first candidate physical control channel on the first time-frequency resource subset and the second time-frequency resource subset, respectively, and the number of bits that can be transmitted by using the first modulation and coding scheme on the same number of time-frequency resource units is less than the number of bits that can be transmitted by using the second modulation and coding scheme.

As an embodiment, the UE450 corresponds to a user equipment in the present application.

As an embodiment, the gNB410 corresponds to a base station in the present application.

For one embodiment, at least the first three of receiver 456, MIMO detector 472, receive processor 452, and controller/processor 490 are configured to receive a first control signal in this application.

For one embodiment, at least the first three of receiver 456, MIMO detector 472, receive processor 452, and controller/processor 490 are configured to receive the second control signal in this application.

For one embodiment, receiver 456, mimo detector 472 and receive processor 452 are configured to monitor the K candidate physical control channels on a first subset of time/frequency resources.

For one embodiment, receiver 456, MIMO detector 472 and receive processor 452 are configured to monitor the K candidate physical control channels on a second subset of time-frequency resources.

As an example, at least the first three of transmit processor 415, mimo transmit processor 441, transmitter 416, and controller/processor 440 may be configured to transmit the first control signals as described herein.

As an example, at least the first three of transmit processor 415, mimo transmit processor 441, transmitter 416 and controller/processor 440 may be configured to transmit the second control signals in this application.

For one embodiment, the transmit processor 415, the mimo transmit processor 441, and the transmitter 416 are configured to transmit at least one of the K candidate physical control channels on a first subset of time-frequency resources.

For one embodiment, the transmit processor 415, the MIMO transmit processor 441, and the transmitter 416 are configured to transmit at least one of the K candidate physical control channels on a second subset of time-frequency resources.

For one embodiment, at least the first three of receiver 416, mimo detector 442, receive processor 412, and controller/processor 440 are configured to perform the first channel access for purposes of 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 perform the second channel access in this application.

Example 5

Embodiment 5 illustrates a flow chart of wireless transmission, as shown in fig. 5. In fig. 5, a base station communicates with a user equipment. The steps identified in blocks F1 and F2 in the figure are optional.

For theBase station N1A first control signal is transmitted in step S11, a second control signal is transmitted in step S12, a first channel access is performed in step S13, one of the K candidate physical control channels is transmitted on a first subset of time-frequency resources in step S14, a second channel access is performed in step S15, and one of the K candidate physical control channels is transmitted on a second subset of time-frequency resources in step S16.

ForUser equipment U2The first control signal is received in step S21, the second control signal is received in step S22, the K candidate physical control channels are monitored on the first subset of time-frequency resources in step S23, and the K candidate physical control channels are monitored on the second subset of time-frequency resources in step S24.

In embodiment 5, the first control signal indicates K candidate physical control channels corresponding to a U2 first time-frequency resource index, where K is a positive integer; the second control signal indicates at least one of a U2 first slot and a second slot; the first subset of time-frequency resources is the time-frequency resources corresponding to the first time-frequency resource index on the first time slot; the second time-frequency resource subset is the time-frequency resource corresponding to the first time-frequency resource index on the second time slot; the number of time-frequency resource units in the first time-frequency resource subset is greater than the number of time-frequency resource units in the second time-frequency resource subset, or a first candidate physical control channel is one of the K candidate physical control channels, a first modulation coding scheme and a second modulation coding scheme are modulation coding schemes that N1 can be used for transmitting the first candidate physical control channel on the first time slot and the second time slot, respectively, and the number of bits that can be transmitted by using the first modulation coding scheme on the same number of time-frequency resource units is less than the number of bits that can be transmitted by using the second modulation coding scheme.

As an embodiment, the steps in F1 and F2 exist, the frequency resources in the first subset of time-frequency resources and the second subset of time-frequency resources are on a first subband, a first channel access is used by the sender of the K candidate physical control channels to determine whether a wireless signal can be sent on the first subband in the first time slot, a second channel access is used by the sender of the K candidate physical control channels to determine whether a wireless signal can be sent on the first subband in the second time slot, a first energy detection threshold and a second energy detection threshold are used for the first channel access and the second channel access, respectively, and the first energy detection threshold is greater than the second energy detection threshold.

Example 6

Embodiment 6 illustrates a first slot and a second slot, as shown in fig. 6. In fig. 6, the cross-hatched grid is the CCE corresponding to the first time-frequency resource index in the present application.

In embodiment 6, the first time-frequency resource subset in this application is composed of 4 CCEs, and the second time-frequency resource subset in this application is composed of 2 CCEs. The time domain resources of the first subset of time frequency resources are in the first time slot in this application. The time domain resources of the second subset of time frequency resources are in the second time slot in the present application. The first modulation and coding scheme in the present application is used to send a DCI (Downlink Control channel) bit block corresponding to a first candidate physical Control channel in the present application, and modulation symbols generated by using the first modulation and coding scheme are distributed on time-frequency resource units in the first time-frequency resource subset. The second modulation and coding scheme in this application is used to send a DCI (Downlink Control channel) bit block corresponding to the first candidate physical Control channel in this application, and the modulation symbols generated by using the second modulation and coding scheme are distributed on the time-frequency resource units in the second time-frequency resource subset. The number of load bits (payload size) corresponding to the first candidate physical control channel in the first time-frequency resource subset and the second candidate physical control channel in the second time-frequency resource subset are the same. The first modulation coding scheme and the second modulation coding scheme have different coding rates, and the number of CCEs included in each of the first time-frequency resource subset and the second time-frequency resource subset is used for calculating the coding rate of the first modulation coding scheme and the coding rate of the second modulation coding scheme.

As an embodiment, the first modulation and coding scheme and the second modulation and coding scheme comprise modulation schemes with different orders.

Example 7

Embodiment 7 illustrates the first channel access and the second channel access, as shown in fig. 7.

In embodiment 7, a first channel access in the present application is used by a base station in the present application to determine whether a wireless signal can be transmitted on a first sub-band of a first time slot in the present application, a second channel access in the present application is used by the base station to determine whether a wireless signal can be transmitted on the first sub-band of a second time slot in the present application, a first energy detection threshold and a second energy detection threshold in the present application are used for the first channel access and the second channel access, respectively, and the first energy detection threshold is greater than the second energy detection threshold. The first sub-band is deployed on an unlicensed band. The third and fourth spatial parameter sets in this application are used to generate receive beams for the first and second channel accesses, respectively. The first and second spatial parameter sets in this application are used to transmit the first candidate physical control channel in this application on the first and second time slots, respectively. The beamwidth generated by the third set of spatial parameters is greater than the beamwidth generated by the fourth set of spatial parameters. The first power value and the second power value are respectively effective transmission powers that the first candidate physical control channel may adopt on the first time slot and on the second time slot, and the first power value is smaller than the second power value. The transmit beams generated by the first set of spatial parameters are within the spatial coverage of the receive beams generated by the third set of spatial parameters. The transmit beams generated by the second set of spatial parameters are within the spatial coverage of the receive beams generated by the fourth set of spatial canthu.

Example 8

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

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

As an embodiment, M1 radio frequency chains of the M radio frequency chains are superimposed through Antenna Virtualization (Virtualization) to generate an Antenna Port (Antenna Port), the M1 radio frequency chains are respectively connected to M1 Antenna groups, and each Antenna group of the M1 Antenna groups includes a positive integer number of antennas. One antenna group is connected to the baseband processor through one radio frequency chain, and different antenna groups correspond to different radio frequency chains. 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 parameter set in the present application includes at least one of a state of an antenna switch, a coefficient of a phase shifter, and an antenna pitch.

As an example, the set of spatial parameters in this application includes beamforming coefficients on the radio link.

As an example, the set of spatial parameters in this application includes beamforming coefficients on a baseband link.

As an example, antenna switches may be used to control the beam width, the larger the operating antenna spacing, the wider the beam.

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

As an example, the M1 radio frequency chains are QCL (Quasi Co-Located).

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

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

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

As an embodiment, the sum of the number of layers configured by the user equipment on each of the parallel subbands is less than or equal to M.

As an embodiment, the sum of the number of antenna ports configured by the user equipment on each of the parallel sub-bands is less than or equal to M.

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

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

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

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

Example 9

Embodiment 9 illustrates a block diagram of a processing device in a user equipment, as shown in fig. 9. In fig. 9, the ue processing apparatus 900 is mainly composed of a first receiver module 901, a second receiver module 902, a third receiver module 903 and a fourth receiver module 904.

For one embodiment, the first receiver module 901 includes at least the first three of a receiver 456, a mimo detector 472, a receive processor 452, and a controller/processor 490.

For one embodiment, the second receiver module 902 includes at least three of a receiver 456, a MIMO detector 472, a receive processor 452, and a controller/processor 490.

For one embodiment, the third receiver module 903 comprises a receiver 456, a MIMO detector 472, and a receive processor 452.

For one embodiment, the fourth receiver module 904 includes a receiver 456, a mimo detector 472, and a receive processor 452.

The first receiver module 901: receiving a first control signal indicating K candidate physical control channels corresponding to a first time-frequency resource index, wherein K is a positive integer.

Second receiver module 902: receiving a second control signal indicating at least one of a first time slot and a second time slot;

-a third receiver module 903: monitoring the K candidate physical control channels on a first subset of time-frequency resources, the first subset of time-frequency resources being time-frequency resources corresponding to the first time slot of the first time-frequency resource index;

the fourth receiver module 904: monitoring the K candidate physical control channels on a second subset of time-frequency resources, the second subset of time-frequency resources being time-frequency resources corresponding to the first time-frequency resource index on the second time slot.

In embodiment 9, the number of time-frequency resource units in the first time-frequency resource subset is greater than the number of time-frequency resource units in the second time-frequency resource subset, or the first candidate physical control channel is one of the K candidate physical control channels, the first modulation and coding scheme and the second modulation and coding scheme are modulation and coding schemes that can be used for transmitting the first candidate physical control channel on the first time-frequency resource subset and the second time-frequency resource subset, respectively, and the number of bits that can be transmitted by using the first modulation and coding scheme is smaller than the number of bits that can be transmitted by using the second modulation and coding scheme on the same number of time-frequency resource units.

Example 10

Embodiment 10 is a block diagram illustrating a processing apparatus in a base station, as shown in fig. 10. In fig. 10, a base station device processing apparatus 1000 mainly comprises a first transmitter module 1001, a second transmitter module 1002, a first transceiver module 1003 and a second transceiver module 1004.

For one embodiment, the first transmitter module 1001 includes at least the first three of the transmit processor 415, the mimo transmit processor 441, the transmitter 416, and the controller/processor 440.

For one embodiment, the second transmitter module 1002 includes at least the first three of the transmit processor 415, the mimo transmit processor 441, the transmitter 416, and the controller/processor 440.

For one embodiment, the first transceiver module 1003 includes a transmit processor 415, a mimo transmit processor 441, and a transmitter 416.

For one embodiment, the first transceiver module 1003 includes at least the first three of a receiver 416, a mimo detector 442, a receive processor 412 and a controller/processor 440.

For one embodiment, the second transceiver module 1004 includes a transmit processor 415, a mimo transmit processor 441, and a transmitter 416.

For one embodiment, the second transceiver module 1004 includes at least the first three of a receiver 416, a mimo detector 442, a receive processor 412, and a controller/processor 440.

In embodiment 10, the number of time-frequency resource units in the first time-frequency resource subset is greater than the number of time-frequency resource units in the second time-frequency resource subset, or the first candidate physical control channel is one of the K candidate physical control channels, the first modulation and coding scheme and the second modulation and coding scheme are modulation and coding schemes that can be used for transmitting the first candidate physical control channel on the first time-frequency resource subset and the second time-frequency resource subset, respectively, and the number of bits that can be transmitted by using the first modulation and coding scheme is less than the number of bits that can be transmitted by using the second modulation and coding scheme on the same number of time-frequency resource units.

For one embodiment, the first transceiver module 1003 performs a first channel access, which is used to determine whether a wireless signal can be transmitted on a first sub-band of the first timeslot; the second transceiver module 1004 performs a second channel access, which is used to determine whether a wireless signal can be transmitted on the first sub-band of the second timeslot; wherein frequency domain resources in the first subset of time-frequency resources and the second subset of time-frequency resources are on the first subband, a first energy detection threshold and a second energy detection threshold are used for the first channel access and the second channel access, respectively, and the first energy detection threshold is greater than the second energy detection threshold.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The UE or the terminal in the present application includes, but is not limited to, a mobile phone, a tablet, a notebook, a network card, a low power consumption device, an eMTC device, an NB-IoT device, a vehicle-mounted communication device, and other wireless communication devices. The base station or the network side device in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission and reception node TRP, and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method in a user equipment used for wireless communication, comprising:

receiving a second control signal indicating at least one of a first time slot and a second time slot;

2. The method of claim 1, wherein a first power value and a second power value are respectively effective transmit powers employed by the first candidate physical control channel on the first time slot and on the second time slot, and wherein the first power value is smaller than the second power value.

3. The method according to claim 1 or 2, wherein the frequency domain resources in the first and second subsets of time-frequency resources are on a first subband, wherein a first channel access is used by the sender of the K candidate physical control channels to determine whether a radio signal can be sent on the first subband in the first time slot, wherein a second channel access is used by the sender of the K candidate physical control channels to determine whether a radio signal can be sent on the first subband in the second time slot, wherein a first energy detection threshold and a second energy detection threshold are used for the first channel access and the second channel access, respectively, and wherein the first energy detection threshold is larger than the second energy detection threshold.

4. The method according to claim 3, characterized in that a third and a fourth set of spatial parameters are used for the first and the second channel access, respectively, the beamwidth generated with the third set of spatial parameters being larger than the beamwidth generated with the fourth set of spatial parameters.

5. Method according to claim 1 or 2, characterized in that a first and a second set of spatial parameters are used for transmitting one of the K physical control channels on the first and on the second time slot, respectively.

6. The method of claim 4, wherein a first spatial parameter set and a second spatial parameter set are used for transmitting one of the K physical control channels on the first time slot and on the second time slot, respectively; the second set of spatial parameters and the fourth set of spatial parameters are associated.

7. A method in a base station used for wireless communication, comprising:

8. The method of claim 7, wherein a first power value and a second power value are respectively effective transmit powers employed by the first candidate physical control channel on the first time slot and on the second time slot, and wherein the first power value is smaller than the second power value.

9. The method according to claim 7 or 8, comprising:

10. The method according to claim 9, characterized in that a third and a fourth set of spatial parameters are used for the first and the second channel access, respectively, the beamwidth generated with the third set of spatial parameters being larger than the beamwidth generated with the fourth set of spatial parameters.

11. The method according to claim 7 or 8, characterized in that a first and a second set of spatial parameters are used for transmitting one of the K physical control channels on the first and on the second time slot, respectively.

12. The method of claim 10, wherein a first spatial parameter set and a second spatial parameter set are used for transmitting one of the K physical control channels on the first time slot and on the second time slot, respectively; the second set of spatial parameters and the fourth set of spatial parameters are associated.

13. A user device configured for wireless communication, comprising:

a first receiver module, configured to receive a first control signal indicating K candidate physical control channels corresponding to a first time-frequency resource index, where K is a positive integer;

a third receiver module that monitors the K candidate physical control channels on a first subset of time-frequency resources, the first subset of time-frequency resources being time-frequency resources corresponding to the first time-frequency resource index on the first time slot;

14. The UE of claim 13, wherein a first power value and a second power value are respectively effective transmit powers employed by the first candidate PDCCH in the first slot and the second slot, and wherein the first power value is smaller than the second power value.

15. The UE of claim 13 or 14, wherein the frequency-domain resources in the first and second subsets of time-frequency resources are on a first subband, wherein a first channel access is used by a sender of the K candidate physical control channels to determine whether a radio signal can be sent on the first subband in the first time slot, wherein a second channel access is used by a sender of the K candidate physical control channels to determine whether a radio signal can be sent on the first subband in the second time slot, wherein a first energy detection threshold and a second energy detection threshold are used for the first channel access and the second channel access, respectively, and wherein the first energy detection threshold is greater than the second energy detection threshold.

16. The UE of claim 15, wherein a third and a fourth set of spatial parameters are used for the first and the second channel accesses, respectively, and wherein a beam width generated using the third set of spatial parameters is larger than a beam width generated using the fourth set of spatial parameters.

17. The UE of claim 13 or 14, wherein a first spatial parameter set and a second spatial parameter set are used for transmitting one of the K physical control channels in the first time slot and in the second time slot, respectively.

18. The UE of claim 16, wherein a first spatial parameter set and a second spatial parameter set are used for transmitting one of the K physical control channels in the first time slot and in the second time slot, respectively; the second set of spatial parameters and the fourth set of spatial parameters are associated.

19. A base station device used for wireless communication, comprising:

a first transceiver module configured to transmit at least one of the K candidate physical control channels on a first subset of time-frequency resources, wherein the first subset of time-frequency resources is a time-frequency resource corresponding to the first time-frequency resource index on the first time slot;

a second transceiver module configured to transmit at least one of the K candidate physical control channels on a second subset of time-frequency resources, where the second subset of time-frequency resources is a time-frequency resource corresponding to the first time-frequency resource index on the second time slot;

20. The base station apparatus of claim 19, wherein a first power value and a second power value are effective transmit powers employed by the first candidate physical control channel on the first time slot and on the second time slot, respectively, and wherein the first power value is smaller than the second power value.

21. The base station device according to claim 19 or 20, wherein the first transceiver module performs a first channel access, the first channel access being used for determining whether a wireless signal can be transmitted on a first sub-band of the first timeslot; the second transceiver module performing a second channel access, the second channel access being used to determine whether a wireless signal can be transmitted on the first sub-band of the second time slot; wherein frequency domain resources in the first subset of time-frequency resources and the second subset of time-frequency resources are on the first subband, a first energy detection threshold and a second energy detection threshold are used for the first channel access and the second channel access, respectively, and the first energy detection threshold is greater than the second energy detection threshold.

22. The base station apparatus according to claim 21, wherein a third spatial parameter set and a fourth spatial parameter set are used for the first channel access and the second channel access, respectively, and a beam width generated using the third spatial parameter set is larger than a beam width generated using the fourth spatial parameter set.

23. The base station apparatus according to claim 19 or 20, characterized in that a first and a second spatial parameter set are used for transmitting one of the K physical control channels on the first and on the second time slot, respectively.

24. The base station apparatus of claim 22, wherein a first spatial parameter set and a second spatial parameter set are used for transmitting one of the K physical control channels on the first time slot and on the second time slot, respectively; the second set of spatial parameters and the fourth set of spatial parameters are associated.