Method and device in UE and base station used for wireless communication

A method and a device in a User Equipment and a base station used for wireless communication. The UE receives a target radio signal and transmits first information on a target channel in turn. A channel measurement for the target radio signal is used for triggering the transmission of the first information. The target channel is a first type of physical layer channel or a second type of physical layer channel. If the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted into the number of transmission times of the first information. Otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel. The present disclosure improves the success rate of retransmission, supports flexible configuration, and saves the transmit power consumption of the UE.

CROSS REFERENCE TO RELATED APPLICATION

This application claims the priority benefit of Chinese Patent Application Serial Number 201710565897.6, filed on Jul. 12, 2017, the full disclosure of which is incorporated herein by reference.

BACKGROUND

Technical Field

The present disclosure relates to transmission schemes of radio signals in wireless communication systems, and in particular to a method and a device for multi-antenna transmission.

Related Art

Massive Multi-Input Multi-Output (MIMO) becomes a research hotspot of next-generation mobile communications. In the massive MIMO, multiple antennas experience beamforming to form a relatively narrow beam which points to a particular direction to improve the quality of communication. Analog beamforming is applied to the massive MIMO system to obtain massive antenna array gain with less radio frequency links. The application of analog beamforming has a restriction that the receiving equipment first selects an analog beam and then uses the selected analog beam to receive a radio signal.

In 3rd Generation Partner Project (3GPP) New Radio discussion, there is some company proposing to use a Physical Uplink Control Channel (PUCCH) and a Physical Random Access Channel (PRACH) like channel to transmit a beam recovery request when a User Equipment (UE) detects degrade of beam quality. If the UE does not receive a response from the base station within one time window after transmitting a beam recovery request, the UE retransmits the beam recovery request. If the UE still does not receive a response from the base station after multiple times of transmitting the beam recovery request, the UE should notify a high layer, so that the high layer decides whether to enter a Radio Link Failure (RLF) state and perform resynchronization.

SUMMARY

The inventor finds through researches that the PUCCH and the PRACH like channel are two different types of channels. The PRACH like channel has higher robustness than the PUCCH channel in information transmission. The PRACH like channel occupies aerial resources which are scarcer. The PUCCH which is configured to transmit other information can also be used to report a beam recovery request. In the case that both the PUCCH and the PRACH like channel can be used to transmit a beam recovery request, simply restricting the total number of retransmission times on the two types of channels would result in a problem that the beam recovery request is more likely to fail because the PRACH like channel which is more robust is not fully used. How to define the number of retransmission times of the beam recovery request according to the use of different types of channels therefore becomes a problem urgently needing to be addressed.

In view of the above problems, the present disclosure provides a solution. It should be noted that the embodiments of the present disclosure and the characteristics in the embodiments may be mutually combined if there is no conflict. For example, the embodiments of the UE of the present disclosure and the characteristics in the embodiments may be applied to the base station, and vice versa.

The present disclosure provides a method in a UE for wireless communication. The method includes the following steps of:

receiving a target radio signal; and

transmitting first information on a target channel.

Herein, a channel measurement for the target radio signal is used for triggering the transmission of the first information; the target channel is a first type of physical layer channel or a second type of physical layer channel; if the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted into the number of transmission times of the first information; otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel; the number of transmission times of the first information, when reaching K, is used for triggering a transmission of second information to a high layer, wherein K is a positive integer.

In one embodiment, the above method is advantageous in that: the first type of physical layer channel is a physical layer channel having stronger robustness; the second type of physical layer channel has weaker robustness and is not necessary to restrict the number of retransmission times as an opportunity channel; and, restricting only the number of times the first type of physical layer channel is used to report the request can improve the success rate of retransmission.

In one embodiment, the target radio signal is a reference signal.

In one embodiment, the target radio signal is a Demodulation Reference Signal (DMRS).

In one embodiment, the target radio signal is a Channel State Information Reference Signal (CSI-RS).

In one embodiment, the target radio signal is a periodic CSI-RS.

In one embodiment, the target radio signal is a UE specific CSI-RS.

In one embodiment, the target radio signal is a Synchronization Signal (SS).

In one embodiment, the channel measurement for the target radio signal is used for a third channel.

In one embodiment, the third channel is a Physical Downlink Control Channel (PDCCH).

In one embodiment, the third channel is a Physical Downlink Shared Channel (PDSCH).

In one embodiment, the channel measurement refers to a Block Error Rate (BLER) calculation after mapping a received reference signal to the third channel.

In one embodiment, the multi-antenna related transmitting of the target radio signal is related to the multi-antenna related transmitting used for the third channel.

In one embodiment, the same transmitting beam is used to transmit the target radio signal and the third channel.

In one embodiment, the multi-antenna related receiving of the target radio signal is related to the multi-antenna related receiving used for the third channel.

In one embodiment, the same receiving beam is used to receive the target radio signal and the third channel.

In one embodiment, the target radio signal and the third channel are both spatially related to one same reference signal.

In one embodiment, the being spatially related refers to being spatially Quasi Co-Located (QCL).

In one embodiment, the being spatially related refers that big-scale channel characteristics are the same.

In one embodiment, the big-scale channel characteristic includes at least one of {Delay Spread, Doppler Spread, Doppler Shift, average of Angle of Arrival (AoA), and average of Angle of Departure (AoD)}.

In one embodiment, the being spatially related refers that two same transmitting beams are used to transmit two signals.

In one embodiment, the being spatially related refers that two same receiving beams are used to receive two signals.

In one embodiment, the transmitting beam is an analog transmitting beam.

In one embodiment, the receiving beam is an analog receiving beam.

In one embodiment, the channel measurement is to measure a Signal-to-Noise Ratio (SNR) of a received reference signal.

In one embodiment, the channel measurement is to measure a Reference Signal Received Power (RSRP) of a received reference signal.

In one embodiment, the result of the channel measurement is less than a first threshold, the transmission of the first information is triggered, and the first information is used for determining that the result of the channel measurement is less than the first threshold.

In one embodiment, the first threshold is default.

In one embodiment, the first threshold is preconfigured.

In one embodiment, the first information is used for determining multi-antenna related transmitting.

In one embodiment, the first type of physical layer channel is a PRACH like channel.

In one embodiment, the first type of physical layer channel is on a time-domain resource on which the PRACH is located.

In one embodiment, the first type of physical layer channel is a contention free PRACH like channel.

In one embodiment, the first type of physical layer channel is a PRACH channel based on contention resolution.

In one embodiment, a first signature sequence transmitted on the first type of physical layer channel is used for determining the first information.

In one embodiment, the first signature sequence is a Zadoff-Chu sequence.

In one embodiment, the first signature sequence is an m sequence.

In one embodiment, the first signature sequence is a pseudorandom sequence.

In one embodiment, the first signature sequence is Pseudo-Noise (PN) sequence.

In one embodiment, an aerial resource occupied by the first type of physical layer channel is related to the ID of the UE.

In one embodiment, the ID of the UE is a Radio Network Temporary Identity (RNTI).

In one embodiment, the ID of the UE is a Cell Radio Network Temporary Identity (C-RNTI).

In one embodiment, an aerial resource occupied by the first type of physical layer channel is used for determining the first information.

In one embodiment, the aerial resource includes at least one of {time-domain resource, frequency-domain resource, code-domain resource}.

In one embodiment, the second type of physical layer channel is a PUCCH.

In one embodiment, an aerial resource for the first type of physical layer channel is preconfigured.

In one embodiment, an aerial resource for the first type of physical layer channel is configured by a high layer.

In one embodiment, an aerial resource for the first type of physical layer channel is configured by an RRC signaling.

In one embodiment, the PDCCH is used for configuring a time-frequency resource on which the second type of physical layer channel used for transmitting the first information is located.

In one embodiment, the value of a bit block transmitted on the second type of physical layer channel is used for determining the first information.

In one embodiment, the first type of physical layer channel is more robust than the second type of physical layer channel,

In one embodiment, the first information occupies more aerial resources on the first type of physical layer channel than on the second type of physical layer channel.

In one embodiment, a transmit power used for the first type of physical layer channel is higher than a transmit power used for the second type of physical layer channel.

In one embodiment, the multi-antenna related transmitting used for the first type of physical layer channel is more robust than the multi-antenna related transmitting used for the second type of physical layer channel.

In one embodiment, a transmitting beam used for the first type of physical layer channel is wider than a transmitting beam used for the second type of physical layer channel.

In one embodiment, beam sweeping is used in transmitting the first information on the first type of physical layer channel.

In one embodiment, beam sweeping is not used in transmitting the first information on the second type of physical layer channel.

In one embodiment, the first type of physical layer channel is spatially related to an SS.

In one embodiment, a receiving beam used for receiving an SS is used for transmitting the first information on the first type of physical layer channel.

In one embodiment, a coefficient of a receiving beamforming vector used for receiving an SS is used for forming a transmitting beamforming vector transmitting the first information on the first type of physical layer channel.

In one embodiment, the second type of physical layer channel is spatially related to a CSI-RS.

In one embodiment, the second type of physical layer channel is spatially related to a Sounding Reference Signal (SRS).

In one embodiment, an analog beam used for SS is wider than an analog beam used for CSI-RS.

In one embodiment, an analog beam used for SS is wider than an analog beam used for SRS.

In one embodiment, the multi-antenna related receiving used for the target radio signal is more related to the multi-antenna related transmitting used for the second type of physical layer channel than to the multi-antenna related transmitting used for the first type of physical layer channel.

In one embodiment, the first type of physical layer channel is dedicated for transmitting the first information.

In one embodiment, the second type of physical layer channel is also used for transmitting information other than the first information.

In one embodiment, the first information is a beam recovery request.

In one embodiment, the beam recovery request is used for beam switching.

In one embodiment, the beam recovery request is used for the beam switching of PDCCH.

In one embodiment, the beam recovery request is used for the beam switching of PDSCH.

In one embodiment, the second information is used for determining whether to perform resynchronization.

In one embodiment, the second information is used for determining whether to enter an RLF state.

In one embodiment, the number of transmission times of the first information reaches K, and the UE does not transmit the first information any longer.

In one embodiment, the UE maintains a first counter, and the value of the first counter is equal to the number of transmission times of the first information.

In one embodiment, the UE maintains a second counter, and the value of the second counter is equal to a difference obtained when K minus the number of transmission times of the first information.

In one embodiment, the high layer refers to a layer higher than a physical layer in a network architecture.

In one embodiment, the high layer refers to a Medium Access Control (MAC) layer.

In one embodiment, the high layer refers to an application layer.

According to one aspect of the present disclosure, the method further includes the following step of:

maintaining the number of transmission times of the first information.

Herein, if the target channel is the first type of physical layer channel, the number of transmission times of the first information increases by 1; otherwise, the number of transmission times of the first information remains the same.

In one embodiment, the UE maintains a first counter, if the target channel is the first type of physical layer channel, the value of the first counter increases by 1; otherwise, the value of the first counter remains the same.

In one subembodiment, if the value of the first counter reaches K, the second information is transmitted to a high layer.

In one subembodiment, the initial value of the first counter is 0.

In one embodiment, the UE maintains a second counter, if the target channel is the first type of physical layer channel, the value of the second counter decreases by 1; otherwise, the value of the second counter remains the same.

In one subembodiment, if the value of the second counter reaches 0, the second information is transmitted to a high layer.

In one subembodiment, the initial value of the second counter is K.

According to one aspect of the present disclosure, the method further includes the following step of:

receiving a first signaling.

Herein, the first signaling is used for determining K.

In one embodiment, the above method is advantageous in that the number of retransmission times is flexibly configured according to the capabilities and situations of the system and the UE.

In one embodiment, the first signaling is a high layer signaling.

In one embodiment, the first signaling is an RRC signaling.

In one embodiment, the first signaling is a physical layer signaling.

In one embodiment, the first signaling is transmitted on a PDCCH.

In one embodiment, the first signaling indicates K explicitly.

In one embodiment, the first signaling indicates K implicitly.

According to one aspect of the present disclosure, the method further includes the following step of:

monitoring a first radio signal.

Herein, the first information is related to the multi-antenna related receiving of the first radio signal; if the UE receives the first radio signal within the first time window after transmitting the first information, the first information is no longer transmitted.

In one embodiment, the above method is advantageous in that the first information is used for the dynamic beam switching initiated by the UE and is beneficial for improving the efficiency of beam switching.

In one embodiment, the monitoring includes: the UE performs on a given time-frequency resource a blind decoding of the first radio signal.

In one embodiment, the monitoring includes: the UE does not determine whether the first radio signal is transmitted, before successful decoding.

In one embodiment, the first radio signal is transmitted on a PDCCH.

In one embodiment, the first information is used for determining a first reference signal, and the multi-antenna related receiving used for the radio signal is related to the multi-antenna related receiving used for the first reference signal.

In one embodiment, a receiving beam used for receiving the first reference signal is used for receiving the first radio signal.

In one embodiment, the multi-antenna related transmitting used for the radio signal is related to the multi-antenna related transmitting used for the first reference signal.

In one embodiment, a transmitting beam used for transmitting the first reference signal is used for transmitting the first radio signal.

In one embodiment, the first radio signal is spatially related to the first reference signal.

According to one aspect of the present disclosure, the method is characterized in that: the second information is used for triggering a resynchronization operation.

In one embodiment, the above method is advantageous in that the power of the UE used for transmitting the beam recovery request is saved, the time when the UE is out of synchronization is shortened, and the efficiency of transmission is improved.

In one embodiment, a high layer of the UE starts a resynchronization operation after receiving the second information.

In one embodiment, a high layer of the UE, after receiving the second information, judges whether to perform a resynchronization operation according to the state of a counter currently aiming at the resynchronization operation.

In one embodiment, if a high layer of the UE receives the second information and the value of a counter currently aiming at a resynchronization operation reaches a second threshold, the UE performs the resynchronization operation.

In one embodiment, the UE performs resynchronization using a Random Access Channel (RACH).

According to one aspect of the present disclosure, the method is characterized in that: after the first type of physical layer channel is used for the first time to transmit the first information, the second type of physical layer channel is not used to transmit the first information.

In one embodiment, the above method is advantageous in that the transmit power consumption of the UE is saved.

In one embodiment, before the first type of physical layer channel is used for the first time to transmit the first information, the first information is transmitted P times on the second type of physical layer channel, where in P is a positive integer.

In one embodiment, P is greater than 1.

In one embodiment, P is equal to 1.

In one embodiment, the first type of physical layer channel is used Q times to transmit the first information, wherein Q is a positive integer greater than 1.

In one embodiment, between any two times the first type of physical layer channel is used to transmit the first information, there is no probability that the second type of physical layer channel is used to transmit the first information.

The present disclosure provides a method in a base station device for wireless communication. The method includes the following steps of:

transmitting a target radio signal; and

receiving first information on a target channel.

Herein, a channel measurement for the target radio signal is used for triggering the transmission of the first information; the target channel is a first type of physical layer channel or a second type of physical layer channel; if the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted into the number of transmission times of the first information; otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel; the number of transmission times of the first information, when reaching K, is used for triggering a transmission of the second information to a high layer, wherein K is a positive integer.

In one embodiment, the channel measurement for the target radio signal is used for a third channel.

In one embodiment, the third channel is a PDCCH.

In one embodiment, the third channel is a PDSCH.

In one embodiment, the multi-antenna related transmitting of the target radio signal is related to the multi-antenna related transmitting used for the third channel.

In one embodiment, the same transmitting beam is used to transmit the target radio signal and the third channel.

In one embodiment, the target radio signal and the third channel are both spatially related to one same reference signal.

In one embodiment, an aerial resource for the first type of physical layer channel is preconfigured.

In one embodiment, the energy of the first type of physical layer channel is used for detecting whether the first type of physical layer channel is used to transmit the first information.

In one embodiment, a first signature sequence transmitted on the first type of physical layer channel is used for determining the first information.

In one embodiment, a signal intensity obtained when the base station makes the first signature sequence related to a signal received on the first type of physical layer channel is used for determining the first information.

In one embodiment, the PDCCH is used for configuring a time-frequency resource on which the second type of physical layer channel used for transmitting the first information is located.

In one embodiment, the value of the recovered bit blocks transmitted on the second type of physical layer channel is used for determining whether the second type of physical layer channel is used to transmit the first information.

According to one aspect of the present disclosure, the method includes the following step of:

transmitting a first signaling.

Herein, the first signaling is used for determining K.

According to one aspect of the present disclosure, the method includes the following step of:

transmitting a first radio signal.

Herein, the first information is related to the multi-antenna related transmitting of the first radio signal.

In one embodiment, the first information is used for determining a transmitting beam used for transmitting the first radio signal.

In one embodiment, the first information is used for determining a first reference signal, and the same transmitting beam is used for transmitting the first reference signal and the first radio signal.

According to one aspect of the present disclosure, the method is characterized in that the second information is used for triggering a resynchronization operation.

In one embodiment, the base station receives a resynchronization request of the UE through energy detection.

In one embodiment, a second signature sequence is used for determining the resynchronization request.

In one embodiment, a signal intensity obtained when the base station correlates the second signature sequence to a received signal is used for determining the first information.

In one embodiment, a signal intensity obtained when the base station makes the second signature sequence related to a signal received on the PRACH is used for determining the first information.

In one embodiment, the base station transmits a response to the resynchronization request of the UE.

According to one aspect of the present disclosure, the method is characterized in that: after the first type of physical layer channel is used for the first time to transmit the first information, the second type of physical layer channel is not used to transmit the first information.

The present disclosure provides a UE for wireless communication. The UE includes the following modules:

a first receiving module, to receive a target radio signal; and

a second transmitting module, to transmit first information on a target channel.

Herein, a channel measurement for the target radio signal is used for triggering the transmission of the first information; the target channel is a first type of physical layer channel or a second type of physical layer channel; if the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted into the number of transmission times of the first information; otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel; the number of transmission times of the first information, when reaching K, is used for triggering a transmission of the second information to a high layer, wherein K is a positive integer.

In one embodiment, the UE is characterized in that: the second transmitting module further maintains the number of transmission times of the first information, wherein if the target channel is the first type of physical layer channel, the number of transmission times of the first information increases by 1; otherwise, the number of transmission times of the first information remains the same.

In one embodiment, the UE is characterized in that: the first receiving module further receives a first signaling, wherein the first signaling is used for determining K.

In one embodiment, the UE is characterized in that: the first receiving module further monitors a first radio signal, wherein the first information is related to the multi-antenna related receiving of the first radio signal; if the UE receives the first radio signal within the first time window after transmitting the first information, the first information is no longer transmitted.

In one embodiment, the UE is characterized in that: the second information is used for triggering a resynchronization operation.

In one embodiment, the UE is characterized in that: after the first type of physical layer channel is used for the first time to transmit the first information, the second type of physical layer channel is not used to transmit the first information.

The present disclosure provides a base station device for wireless communication. The base station device includes:

a first transmitting module, to transmit a target radio signal; and

a second receiving module, to receive first information on a target channel.

Herein, a channel measurement for the target radio signal is used for triggering the transmission of the first information; the target channel is a first type of physical layer channel or a second type of physical layer channel; if the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted into the number of transmission times of the first information; otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel; the number of transmission times of the first information, when reaching K, is used for triggering a transmission of the second information to a high layer, wherein K is a positive integer.

In one embodiment, the base station device is characterized in that: the first transmitting module further transmits a first signaling, wherein the first signaling is used for determining K.

In one embodiment, the base station device is characterized in that: the first transmitting module further transmits a first radio signal, wherein the first information is related to the multi-antenna related transmitting of the first radio signal.

In one embodiment, the base station device is characterized in that: the second information is used for triggering a resynchronization operation.

In one embodiment, the base station device is characterized in that: after the first type of physical layer channel is used for the first time to transmit the first information, the second type of physical layer channel is not used to transmit the first information.

In one embodiment, compared with the prior art, the present disclosure has the following technical benefits:

the success rate of retransmission is improved;

flexible configuration is supported; and

the transmit power consumption of the UE is saved.

DESCRIPTION OF THE EMBODIMENTS

The technical scheme of the present disclosure is described below in further detail in conjunction with the drawings. It should be noted that the embodiments in the present disclosure and the characteristics of the embodiments may be arbitrarily combined if there is no conflict.

Embodiment 1 illustrates an example of a flowchart according to the present disclosure, as shown inFIG. 1. InFIG. 1, each box represents a step.

In Embodiment 1, the UE in the present disclosure receives a target radio signal and transmits first information on a target channel in turn. A channel measurement for the target radio signal is used for triggering the transmission of the first information. The target channel is a first type of physical layer channel or a second type of physical layer channel. If the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted into the number of transmission times of the first information. Otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel. The number of transmission times of the first information, when reaching K, is used for triggering a transmission of the second information to a high layer, wherein K is a positive integer.

In one subembodiment, the target radio signal is a PDCCH.

In one subembodiment, the target radio signal is a PDSCH.

In one subembodiment, the target radio signal is a CSI-RS.

In one subembodiment, the target radio signal is an SS.

In one subembodiment, the first type of physical layer channel is a PRACH.

In one subembodiment, the first type of physical layer channel is a PRACH like channel.

In one subembodiment, a signature sequence transmitted on the first type of physical layer channel is used for determining the first information.

In one subembodiment, the first type of physical layer channel is a contention free PRACH like channel

In one subembodiment, a receiving beam used for receiving an SS is used for transmitting the first information on the first type of physical layer channel.

In one subembodiment, the second type of physical layer channel is a PUCCH.

In one subembodiment, the first information is carried in Uplink Control Information (UCI).

In one subembodiment, the first information corresponds to partial bits of one UCI, and the UCI also carries other uplink control information.

In one subembodiment, a transmit power used for transmitting the first information on the first type of physical layer channel is higher than a transmit power used for transmitting the first information on the second type of physical layer channel.

In one subembodiment, a time-frequency resource occupied by once of using the first type of physical layer channel is greater than a time-frequency resource occupied by once of using the second type of physical layer channel.

In one subembodiment, a transmitting beam used for transmitting the first information on the first type of physical layer channel is wider than a transmitting beam used for transmitting the first information on the second type of physical layer channel.

In one subembodiment, beam sweeping is used in transmitting the first information on the first type of physical layer channel, and beam sweeping is not used in transmitting the first information on the second type of physical layer channel.

In one subembodiment, beam sweeping is used in receiving the first information on the first type of physical layer channel, and beam sweeping is not used in receiving the first information on the second type of physical layer channel.

In one subembodiment, a time-frequency resource occupied by the first type of physical layer channel is preconfigured by the base station through an RRC signaling.

In one subembodiment, a time-frequency resource occupied by the second type of physical layer channel is preconfigured by the base station through an RRC signaling.

In one subembodiment, time-domain resources in a time-domain resource pool corresponding to the first type of physical layer channel are orthogonal to time-domain resources in a time-domain resource pool corresponding to the second type of physical layer channel.

In one subembodiment, the high layer is a MAC layer.

In one subembodiment, the second information is used by the UE to confirm entering an RLF state.

In one subembodiment, the second information is used by the UE to confirm entering an out of synchronization state.

In one subembodiment, the second information is used for initiating a resynchronization operation.

In one subembodiment, the target channel is not the first type of physical layer channel and the UE does not receive a response to the first information from the base station, then the first information is retransmitted.

In one subembodiment, the target channel is the first type of physical layer channel, and the number of transmission times of the first information increases by 1. If the number of transmission times of the first information is less than K, the first information is retransmitted; otherwise, the UE transmits the second information to a high layer.

In one subembodiment, the UE201corresponds to the UE in the present disclosure.

In one subembodiment, the gNB203corresponds to the base station in the present disclosure.

In one subembodiment, the UE201supports multi-antenna transmission.

In one subembodiment, the UE201supports analog beamforming.

In one subembodiment, the gNB203supports multi-antenna transmission.

In one subembodiment, the gNB203supports analog beamforming.

Embodiment 3 is a diagram illustrating an embodiment of a radio protocol architecture of a user plane and a control plane according to the present disclosure, as shown inFIG. 3.FIG. 3is a diagram illustrating an embodiment of a radio protocol architecture of a user plane and a control plane. InFIG. 3, the radio protocol architecture of a UE and a gNB is represented by three layers, which are a layer1, a layer2and a layer3respectively. The layer1(L1)301is the lowest layer and performs signal processing functions of each PHY layer. The layer1is called PHY301in this paper. The layer2(L2)305is above the PHY301, and is in charge of the link between the UE and the gNB via the PHY301. In the user plane, the L2305includes a Medium Access Control (MAC) sublayer302, a Radio Link Control (RLC) sublayer303, and a Packet Data Convergence Protocol (PDCP) sublayer304. All the three sublayers terminate at the gNB of the network side. Although not described inFIG. 3, the UE may include several higher layers above the L2305, such as a network layer (i.e. IP layer) terminated at a P-GW of the network side and an application layer terminated at the other side of the connection (i.e. a peer UE, a server, etc.). The PDCP sublayer304provides multiplexing among variable radio bearers and logical channels. The PDCP sublayer304also provides a header compression for a higher-layer packet so as to reduce a radio transmission overhead. The PDCP sublayer304provides security by encrypting a packet and provides support for UE handover between gNBs. The RLC sublayer303provides segmentation and reassembling of a higher-layer packet, retransmission of a lost packet, and reordering of a lost packet to as to compensate the disordered receiving caused by Hybrid Automatic Repeat Request (HARQ). The MAC sublayer302provides multiplexing between logical channels and transport channels. The MAC sublayer302is also responsible for allocating between UEs various radio resources (i.e., resource block) in a cell. The MAC sublayer302is also in charge of HARQ operation. In the control plane, the radio protocol architecture of the UE and the gNB is almost the same as the radio protocol architecture in the user plane on the PHY301and the L2305, but there is no header compression for the control plane. The control plane also includes a Radio Resource Control (RRC) sublayer306in the layer3(L3). The RRC sublayer306is responsible for acquiring radio resources (i.e. radio bearer) and configuring the lower layers using an RRC signaling between the gNB and the UE.

In one subembodiment, the radio protocol architecture inFIG. 3is applicable to the UE in the present disclosure.

In one subembodiment, the radio protocol architecture inFIG. 3is applicable to the base station device in the present disclosure.

In one subembodiment, the target radio signal in the present disclosure is generated by the PHY301.

In one subembodiment, the first information in the present disclosure is generated by the PHY301.

In one subembodiment, the second information in the present disclosure is generated by the PHY301and is transmitted to the MAC sublayer302.

In one subembodiment, the first signaling in the present disclosure is generated by the PHY301.

In one subembodiment, the first signaling in the present disclosure is generated by the MAC sublayer302.

In one subembodiment, the first signaling in the present disclosure is generated by the RRC sublayer306.

In one subembodiment, the first radio signal in the present disclosure is generated by the PHY301.

Embodiment 4 illustrates a diagram of an evolved node B and a given UE according to the present disclosure, as shown inFIG. 4.FIG. 4is a block diagram of a gNB410in communication with a UE450in an access network. In downlink transmission, a higher-layer packet coming from the core network is provided to a controller/processor440. The controller/processor440provides functions of a layer2. In downlink transmission, the controller/processor440provides header compression, encrypting, packet segmentation and reordering, multiplexing between a logical channel and a transport channel, and radio resource allocation for the UE450based on various priorities. The controller/processor440is also in charge of HARQ operation, retransmission of a lost packet, and a signaling to the UE450. A transmitting processor415performs signal processing functions used for the layer1(that is, PHY). The signal processing function includes encoding and interleaving, so as to ensure an FEC (Forward Error Correction) and the mapping to corresponding signal clusters corresponding to each modulation scheme (i.e., BPSK, QPSK) at the UE450side. The encoded and modulated signals are divided into parallel streams. Each of the parallel streams is mapped into multi-carrier subcarriers and/or multi-carrier symbols, after the interleaving method of the present disclosure the modulated symbols are multiplexed with a reference signal (i.e., pilot frequency) in time domain and/or frequency domain, and then they are assembled through Inverse Fast Fourier Transform (IFFT) to generate a physical channel carrying time-domain multi-carrier symbol streams. The parallel streams subject to spatial precoding to generate multiple spatial streams. Each spatial stream is provided to different antennas420via the transmitter416. Every transmitter416is used to transmit a corresponding spatial stream modulation RF (Radio Frequency) carrier. At the UE450side, every receiver456receives a signal via a corresponding antenna460. Every receiver456recovers information modulated to the RF carrier and provides the information to a receiving processor452. The receiving processor452performs signal receiving processing functions of the layer1. The receiving processor452performs spatial processing on the information to recover any spatial stream targeting the UE450. The receiving processor452then converts the multi-carrier symbol stream from time domain into frequency domain using FFT. A frequency domain signal includes a single multi-carrier symbol stream of each subcarrier used for multi-carrier signals. The symbol and reference signal on each subcarrier are recovered and demodulated by determining the most possible signal cluster point transmitted by the gNB410, and generate a soft decision. The soft decision is then decoded and de-interleaved so as to recover the original data and control signal transmitted by the gNB410on the physical channel. The data and control signal are then provided to a controller/processor490. The controller/processor490performs functions of the layer2. The controller/processor can be connected to a memory480that stores program code and data. The memory480is a computer readable medium.

In one subembodiment, the UE450includes at least one processor and at least one memory. The at least one memory includes computer program codes. The at least one memory and the computer program codes are configured to be used in collaboration with the at least one processor. The UE450at least receives a target radio signal, and transmits first information on a target channel; wherein a channel measurement for the target radio signal is used for triggering the transmission of the first information; the target channel is a first type of physical layer channel or a second type of physical layer channel; if the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted into the number of transmission times of the first information; otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel; the number of transmission times of the first information, when reaching K, is used for triggering a transmission of the second information to a high layer, wherein K is a positive integer.

In one subembodiment, the UE450includes a memory that stores a computer readable instruction program. The computer readable instruction program generates an action when executed by at least one processor. The action includes: receiving a target radio signal, and transmitting first information on a target channel; wherein a channel measurement for the target radio signal is used for triggering the transmission of the first information; the target channel is a first type of physical layer channel or a second type of physical layer channel; if the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted into the number of transmission times of the first information; otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel; the number of transmission times of the first information, when reaching K, is used for triggering a transmission of the second information to a high layer, wherein K is a positive integer.

In one subembodiment, the gNB410includes at least one processor and at least one memory. The at least one memory includes computer program codes. The at least one memory and the computer program codes are configured to be used in collaboration with the at least one processor. The gNB410at least transmits a target radio signal, and receives first information on a target channel; wherein a channel measurement for the target radio signal is used for triggering the transmission of the first information; the target channel is a first type of physical layer channel or a second type of physical layer channel; if the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted into the number of transmission times of the first information; otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel; the number of transmission times of the first information, when reaching K, is used for triggering a transmission of the second information to a high layer, wherein K is a positive integer.

In one subembodiment, the gNB410includes a memory that stores a computer readable instruction program. The computer readable instruction program generates an action when executed by at least one processor. The action includes: transmitting a target radio signal, and receiving first information on a target channel; wherein a channel measurement for the target radio signal is used for triggering the transmission of the first information; the target channel is a first type of physical layer channel or a second type of physical layer channel; if the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted into the number of transmission times of the first information; otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel; the number of transmission times of the first information, when reaching K, is used for triggering a transmission of the second information to a high layer, wherein K is a positive integer.

In one subembodiment, the UE450corresponds to the UE in the present disclosure.

In one subembodiment, the gNB410corresponds to the base station in the present disclosure.

In one subembodiment, at least one of the transmitting processor415and the controller/processor440is used for transmitting the target radio signal in the present disclosure.

In one subembodiment, at least one of the receiving processor452and the controller/processor490is used for receiving the target radio signal in the present disclosure.

In one subembodiment, at least one of the transmitting processor455and the controller/processor490is used for transmitting the first information in the present disclosure.

In one subembodiment, at least one of the receiving processor412and the controller/processor440is used for receiving the first information in the present disclosure.

In one subembodiment, at least one of the transmitting processor415and the controller/processor440is used for transmitting the first signaling in the present disclosure.

In one subembodiment, at least one of the receiving processor452and the controller/processor490is used for receiving the first signaling in the present disclosure.

In one subembodiment, at least one of the transmitting processor415and the controller/processor440is used for transmitting the first radio signal in the present disclosure.

In one subembodiment, at least one of the receiving processor452and the controller/processor490is used for monitoring the first radio signal in the present disclosure.

Embodiment 5 illustrates an example of a flowchart of the transmission of a radio signal according to the present disclosure, as shown inFIG. 5. InFIG. 5, the base station N1is a maintenance base station for a serving cell of the UE U2. InFIG. 5, steps marked by box F0, box F1and box F2are optional.

The base station N1transmits a first signaling in S11, transmits a target radio signal in S12, receives first information on a target channel in S13, and transmits a first radio signal in S14.

The UE U2receives the first signaling in S21, receives the target radio signal in S22, transmits the first information on the target channel in S23, maintains the number of transmission times of the first information in S24, and monitors the first radio signal in S25.

In Embodiment 5, a channel measurement for the target radio signal is used by the U2to trigger the transmission of the first information; the target channel is a first type of physical layer channel or a second type of physical layer channel; if the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted by the U2into the number of transmission times of the first information; otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel; the number of transmission times of the first information, when reaching K, is used by the U2to trigger a transmission of the second information to a high layer, wherein K is a positive integer.

In one subembodiment, the step in box F1exists; if the target channel is the first type of physical layer channel, the number of transmission times of the first information increases by 1; otherwise, the number of transmission times of the first information remains the same.

In one subembodiment, the step in box F0exists; the first signaling is used by the U2to determine K.

In one subembodiment, the step in box F2exists; the first information is used by the N1to determine the multi-antenna related transmitting of the first radio signal; the first information is related to the multi-antenna related receiving of the first radio signal at the U2; if the U2receives the first radio signal within the first time window after transmitting the first information, the first information is no longer transmitted.

In one subembodiment, the second information is used by the U2to trigger a resynchronization operation.

In one subembodiment, after the first type of physical layer channel is used by the U2for the first time to transmit the first information, the second type of physical layer channel is not used by the U2to transmit the first information.

In the condition that there is no conflict, the above subembodiments may be arbitrarily combined.

Embodiment 6 illustrates an example of time-domain resources of a first type of physical layer channel and a second type of physical layer channel, as shown inFIG. 6. The rectangle filled by gray color represents a time unit in a time resource pool of the first type of physical layer channel. The rectangle filled by slashes represents a time unit in a time resource pool of the second type of physical layer channel.

In Embodiment 6, the time-domain resource of the first type of physical layer channel is orthogonal to the time-domain resource of the second type of physical layer channel. First information is transmitted on the first type of physical layer channel or the second type of physical layer channel.

In one subembodiment, the time-domain resource of the first type of physical layer channel is configured by a high layer signaling.

In one subembodiment, the time-domain resource of the second type of physical layer channel is configured by a high layer signaling.

In one subembodiment, the time-domain resource of the second type of physical layer channel is configured by default.

In one subembodiment, the time-domain resource of the second type of physical layer channel is configured by a PDCCH.

In one subembodiment, in time domain, one time unit in the time resource pool of the first type of physical layer channel is longer than one time unit in the time resource pool of the second type of physical layer channel.

In one subembodiment, before the first type of physical layer channel is used to transmit the first information, the second type of physical layer channel is used to transmit the first information.

In one subembodiment, the first type of physical layer channel is a PRACH.

In one subembodiment, a signature sequence is used to transmit the first information on the first type of physical layer channel.

In one subembodiment, the second type of physical layer channel is a PUCCH.

Embodiment 7 illustrates an example of a situation in which the second type of physical layer channel is not used to transmit the first information after the first type of physical layer channel is used for the first time to transmit the first information, as shown inFIG. 7. The rectangle filled by gray color represents transmitting the first information on the first type of physical layer channel. The rectangle filled by slashes represents transmitting the first information on the second type of physical layer channel.

In Embodiment 7, a UE receives a target radio signal, and transmits the first information on the first type of physical layer channel or on the second type of physical layer channel. The UE first uses the second type of physical layer channel to transmit the first information, then uses the first type of physical layer channel to transmit the first information. After the first type of physical layer channel is used for the first time to transmit the first information, the second type of physical layer channel is not used to transmit the first information. After the first type of physical layer channel is used K times, the UE transmits second information to a high layer and stops transmitting the first information.

In one subembodiment, the first type of physical layer channel used for the first time to transmit the first information is a time unit, closest to the target radio signal, in a preconfigured time-domain resource pool corresponding to the first type of physical layer channel.

In one subembodiment, before the UE uses the first type of physical layer channel to transmit the first information, the UE receives a DCI on PDCCH, which indicates to transmit the first information on the second type of physical layer channel.

In one subembodiment, the second type of physical layer channel is a PUCCH.

In one subembodiment, the UE monitors a first radio signal, within a time window after each transmission of the first information. The first radio signal is a response to the first information by the base station. The UE does not detect the first radio signal within the time window, and the number of times the second type of physical layer channel is used to transmit the first information is less than K, then the first information is retransmitted on the first type of physical layer channel or on the second type of physical layer channel.

Embodiment 8 illustrates an example of a situation in which different transmitting beams are used for the first type of physical layer channel and the second type of physical layer channel, as shown inFIG. 8.

In Embodiment 8, a wider transmitting beam is used for transmitting the first information on the first type of physical layer channel, and a narrower transmitting beam is used for transmitting the first information on the second type of physical layer channel.

In one subembodiment, a transmit power used for transmitting the first information on the first type of physical layer channel is higher than a transmit power used for transmitting the first information on the second type of physical layer channel.

In one subembodiment, a receiving beam used for receiving an SS is used for transmitting the first information on the first type of physical layer channel.

In one subembodiment, a transmitting beam used for transmitting an SRS is used for transmitting the first information on the second first type of physical layer channel.

In one subembodiment, a receiving beam used for receiving a CSI-RS is used for transmitting the first information on the second type of physical layer channel.

Embodiment 9 illustrates an example of a structure block diagram of a processing device in a UE, as shown inFIG. 9. InFIG. 9, the processing device900of the UE is mainly composed of a first receiving module901and a second transmitting module902.

In Embodiment 9, the first receiving module901receives a target radio signal, and the second transmitting module902transmits first information on a target channel.

In Embodiment 9, a channel measurement for the target radio signal is used for triggering the transmission of the first information; the target channel is a first type of physical layer channel or a second type of physical layer channel; if the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted into the number of transmission times of the first information; otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel; the number of transmission times of the first information, when reaching K, is used for triggering a transmission of the second information to a high layer, wherein K is a positive integer.

In one subembodiment, the second transmitting module902further maintains the number of transmission times of the first information, wherein if the target channel is the first type of physical layer channel, the number of transmission times of the first information increases by 1; otherwise, the number of transmission times of the first information remains the same.

In one subembodiment, the first receiving module901further receives a first signaling, wherein the first signaling is used for determining K.

In one subembodiment, the first receiving module901further monitors a first radio signal, wherein the first information is related to the multi-antenna related receiving of the first radio signal; if the UE receives the first radio signal within the first time window after transmitting the first information, the first information is no longer transmitted.

In one subembodiment, the second information is used for triggering a resynchronization operation.

In one subembodiment, after the first type of physical layer channel is used for the first time to transmit the first information, the second type of physical layer channel is not used to transmit the first information.

Embodiment 10 illustrates an example of a structure block diagram of a processing device in a base station, as shown inFIG. 10. InFIG. 10, the processing device1000of the base station is mainly composed of a first transmitting module1001and a second receiving module1002.

In Embodiment 10, the first transmitting module1001transmits a target radio signal, and the second receiving module1002receives first information on a target channel.

In Embodiment 10, a channel measurement for the target radio signal is used for triggering the transmission of the first information; the target channel is a first type of physical layer channel or a second type of physical layer channel; if the target channel is the first type of physical layer channel, the transmission of the first information on the target channel is counted into the number of transmission times of the first information; otherwise, the number of transmission times of the first information is unrelated to the transmission of the first information on the target channel; the number of transmission times of the first information, when reaching K, is used for triggering a transmission of the second information to a high layer, wherein K is a positive integer.

In one subembodiment, the first transmitting module1001further transmits a first signaling, wherein the first signaling is used for determining K.

In one subembodiment, the first transmitting module1001further transmits a first radio signal, wherein the first information is related to the multi-antenna related transmitting of the first radio signal.

In one subembodiment, the second information is used for triggering a resynchronization operation.

In one subembodiment, after the first type of physical layer channel is used for the first time to transmit the first information, the second type of physical layer channel is not used to transmit the first information.

The ordinary skill in the art may understand that all or part steps in the above method may be implemented by instructing related hardware through a program. The program may be stored in a computer readable storage medium, for example Read-Only Memory (ROM), hard disk or compact disc, etc. Optionally, all or part steps in the above embodiments also may be implemented by one or more integrated circuits. Correspondingly, each module unit in the above embodiment may be realized in the form of hardware, or in the form of software function modules. The present disclosure is not limited to any combination of hardware and software in specific forms. The UE or terminal in the present disclosure includes but not limited to mobile phones, tablet computers, notebooks, network cards, low-power equipment, enhanced MTC (eMTC) equipment, NB-IoT equipment, vehicle-mounted communication equipment, and other wireless communication equipment. The base station or network side equipment in the present application includes but not limited to macro-cellular base stations, micro-cellular base stations, home base stations, relay base station, eNB, gNB, TRP, and other wireless communication equipment.