Patent Application
20200029306
This application claims the priority benefit of Chinese Patent Application Serial Number 201810799906.2, filed on Jul. 20, 2018, the full disclosure of which is incorporated herein by reference.
The disclosure relates to transmission methods and devices in wireless communication systems, and in particular to a method and a device of multi-antenna transmission technologies.
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 quality of communication.
In conventional 3rd Generation Partner Project (3GPP) Long-term Evolution (LTE) systems, uplink transmission on terminal side generally is based on a dynamic grant of a base station. However, in 5G New Radio Access Technology (NR) Phase 1, a terminal can perform configured grant uplink transmission in air-interface resources preconfigured by a base station, so as to reduce overheads of air-interface signalings and improve spectrum efficiency of the system. In a configured grant, a base station configures, for a User Equipment (UE), a resource pool and multi-antenna related information for uplink precoding through a higher-layer signaling, for example, Radio Resource Control (RRC) signaling, and the UE determines autonomously whether to transmit a radio signal in the resource pool configured by the base station.
The inventor finds through researches that the multi-antenna related information for uplink precoding configured for the UE by the base station through a higher-layer signaling would have a problem of being inapplicable to some one time window in one periodicity because the periodicity is long.
In view of the above problems, the disclosure provides a solution. It should be noted that the embodiments of the disclosure and the characteristics in the embodiments may be mutually combined arbitrarily if no conflict is incurred. For example, the embodiments of the UE of the disclosure and the characteristics in the embodiments may be applied to the base station, and vice versa.
The disclosure provides a method in a UE for wireless communication, wherein the method includes:
receiving a first signaling, the first signaling being used for indicating a first time-frequency resource pool and a first spatial parameter group, the first spatial parameter group being associated to the first time-frequency resource pool, and the first time-frequency resource pool including a first time-frequency resource set;
receiving a second signaling, the second signaling being used for indicating a second spatial parameter group; and
judging whether the first time-frequency resource set can be used for transmitting a radio signal; if so, transmitting a first radio signal in the first time-frequency resource set, an antenna port used for transmitting the first radio signal being related to the first spatial parameter group; otherwise, giving up transmitting a radio signal in the first time-frequency resource set.
Herein, the first spatial parameter group and the second spatial parameter group are used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
In one embodiment, the above method solves the problem that: if according to a dynamic signaling, the UE can still perform uplink transmission in preconfigured resources employing a previous precoding configured through an RRC signaling in the condition of judging that the previous precoding is no longer applicable, which would result in problems of poor uplink performance, intra-user interference and power waste.
In one embodiment, the above method has a following benefit: it can be judged, according to a dynamic signaling, whether to transmit a radio signal in preconfigured radio resources employing multi-antenna related information configured through a higher-layer signaling, which improves efficiency of transmission.
Specifically, according to one aspect of the disclosure, the method includes:
transmitting a second radio signal in a second time-frequency resource set, an antenna port used for transmitting the second radio signal being related to the second spatial parameter group, and time-frequency resources in the second time-frequency resource set not belonging to the first time-frequency resource pool.
Herein, the second signaling includes scheduling information of the second radio signal.
In one embodiment, the above method has a following benefit: multi-antenna related information transmitted in uplink used for dynamic grant is used for judging whether to transmit a radio signal in radio resources preconfigured through an RRC signaling employing multi-antenna related information configured through a higher-layer signaling, which saves signaling overheads and improves efficiency of transmission.
Specifically, according to one aspect of the disclosure, the first time-frequency resource set is within a first time window, and a reception time point of the second signaling is used for determining an end time point of the first time window.
In one embodiment, the above method has a following benefit: by setting up an effective time window, opportunities and delay of transmission are guaranteed.
Specifically, according to one aspect of the disclosure, the first signaling is a higher-layer signaling, and the second signaling is a physical layer signaling.
Specifically, according to one aspect of the disclosure, the first signaling is used for indicating a first spatial parameter group set associated with the first spatial parameter group; if the first spatial parameter group set includes the second spatial parameter group, the UE judges that the first time-frequency resource set can be used for transmitting a radio signal; if the first spatial parameter group set does not include the second spatial parameter group, the UE judges that the first time-frequency resource set cannot be used for transmitting a radio signal.
In one embodiment, the above method has a following benefit: a base station configures judgment criteria, thereby improving flexibility of the system.
Specifically, according to one aspect of the disclosure, the UE determines autonomously whether to transmit a radio signal in time-frequency resources in the first time-frequency resource pool.
In one embodiment, the above method has a following benefit: the method in the disclosure is used for configured grant or grant-free communications, which improves quality of communication.
Specifically, according to one aspect of the disclosure, the first spatial parameter group and the second spatial parameter group are associated with a first reference signal resource and a second reference signal resource respectively.
Specifically, according to one aspect of the disclosure, the first spatial parameter group is associated with a first synchronization signal time index, the second spatial parameter group is associated with a second synchronization signal time index; and a relationship between the first synchronization signal time index and the second synchronization signal time index is used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
In one embodiment, the above method has a following benefit: whether the first time-frequency resource set can be used for transmitting a radio signal is judged through a judgment of differences between beams used for receiving different synchronization signals, which increases opportunities of uplink transmission in configured grant radio resources.
Specifically, according to one aspect of the disclosure, a physical downlink shared channel is used for transmitting the first signaling, and a physical downlink control channel is used for transmitting the second signaling.
The disclosure provides a method in a base station for wireless communication, wherein the method includes:
transmitting a first signaling, the first signaling being used for indicating a first time-frequency resource pool and a first spatial parameter group, the first spatial parameter group being associated to the first time-frequency resource pool, and the first time-frequency resource pool including a first time-frequency resource set;
transmitting a second signaling, the second signaling being used for indicating a second spatial parameter group; and
monitoring a first radio signal in the first time-frequency resource set, or, giving up monitoring a radio signal in the first time-frequency resource set.
Herein, the first spatial parameter group and the second spatial parameter group are used for indicating whether the first time-frequency resource set can be used for transmitting a radio signal.
Specifically, according to one aspect of the disclosure, the method includes:
receiving a second radio signal in a second time-frequency resource set, an antenna port used for transmitting the second radio signal being related to the second spatial parameter group, and time-frequency resources in the second time-frequency resource set not belonging to the first time-frequency resource pool.
Herein, the second signaling includes scheduling information of the second radio signal.
Specifically, according to one aspect of the disclosure, the first time-frequency resource set is within a first time window, and a reception time point of the second signaling is used for determining an end time point of the first time window.
Specifically, according to one aspect of the disclosure, the first signaling is a higher-layer signaling, and the second signaling is a physical layer signaling.
Specifically, according to one aspect of the disclosure, the first signaling is used for indicating a first spatial parameter group set associated with the first spatial parameter group; if the first spatial parameter group set includes the second spatial parameter group, the first time-frequency resource set can be used for transmitting a radio signal; if the first spatial parameter group set does not include the second spatial parameter group, the first time-frequency resource set cannot be used for transmitting a radio signal.
Specifically, according to one aspect of the disclosure, a receiver of the first signaling determines autonomously whether to transmit a radio signal in time-frequency resources in the first time-frequency resource pool.
Specifically, according to one aspect of the disclosure, the first spatial parameter group and the second spatial parameter group are associated with a first reference signal resource and a second reference signal resource respectively.
Specifically, according to one aspect of the disclosure, the first spatial parameter group is associated with a first synchronization signal time index, the second spatial parameter group is associated with a second synchronization signal time index, and a relationship between the first synchronization signal time index and the second synchronization signal time index is used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
Specifically, according to one aspect of the disclosure, a physical downlink shared channel is used for transmitting the first signaling, and a physical downlink control channel is used for transmitting the second signaling.
The disclosure provides a UE for wireless communication, wherein the UE includes:
a first receiver, to receive a first signaling, the first signaling being used for indicating a first time-frequency resource pool and a first spatial parameter group, the first spatial parameter group being associated to the first time-frequency resource pool, and the first time-frequency resource pool including a first time-frequency resource set;
a second receiver, to receive a second signaling, the second signaling being used for indicating a second spatial parameter group; and
a third transmitter, to judge whether the first time-frequency resource set can be used for transmitting a radio signal; if so, to transmit a first radio signal in the first time-frequency resource set, an antenna port used for transmitting the first radio signal being related to the first spatial parameter group; otherwise, to give up transmitting a first radio signal in the first time-frequency resource set.
Herein, the first spatial parameter group and the second spatial parameter group are used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
In one embodiment, the above UE is characterized in that: the third transmitter transmits a second radio signal in a second time-frequency resource set, an antenna port used for transmitting the second radio signal is related to the second spatial parameter group, and time-frequency resources in the second time-frequency resource set do not belong to the first time-frequency resource pool, wherein the second signaling includes scheduling information of the second radio signal.
In one embodiment, the above UE is characterized in that: the first time-frequency resource set is within a first time window, and a reception time point of the second signaling is used for determining an end time point of the first time window.
In one embodiment, the above UE is characterized in that: the first signaling is a higher-layer signaling, and the second signaling is a physical layer signaling.
In one embodiment, the above UE is characterized in that: the first signaling is used for indicating a first spatial parameter group set associated with the first spatial parameter group; if the first spatial parameter group set includes the second spatial parameter group, the UE judges that the first time-frequency resource set can be used for transmitting a radio signal; if the first spatial parameter group set does not include the second spatial parameter group, the UE judges that the first time-frequency resource set cannot be used for transmitting a radio signal.
In one embodiment, the above UE is characterized in that: the UE determines autonomously whether to transmit a radio signal in time-frequency resources in the first time-frequency resource pool.
In one embodiment, the above UE is characterized in that: the first spatial parameter group and the second spatial parameter group are associated with a first reference signal resource and a second reference signal resource respectively.
In one embodiment, the above UE is characterized in that: the first spatial parameter group is associated with a first synchronization signal time index, the second spatial parameter group is associated with a second synchronization signal time index, and a relationship between the first synchronization signal time index and the second synchronization signal time index is used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
In one embodiment, the above UE is characterized in that: a physical downlink shared channel is used for transmitting the first signaling, and a physical downlink control channel is used for transmitting the second signaling.
The disclosure provides a base station for wireless communication, wherein the base station includes:
a first transmitter, to transmit a first signaling, the first signaling being used for indicating a first time-frequency resource pool and a first spatial parameter group, the first spatial parameter group being associated to the first time-frequency resource pool, and the first time-frequency resource pool including a first time-frequency resource set;
a second transmitter, to transmit a second signaling, the second signaling being used for indicating a second spatial parameter group; and
a third receiver, to monitor a first radio signal in the first time-frequency resource set, or, to give up monitoring a first radio signal in the first time-frequency resource set.
Herein, the first spatial parameter group and the second spatial parameter group are used for indicating whether the first time-frequency resource set can be used for transmitting a radio signal.
In one embodiment, the above base station is characterized in that: the third receiver receives a second radio signal in a second time-frequency resource set, an antenna port used for transmitting the second radio signal is related to the second spatial parameter group, and time-frequency resources in the second time-frequency resource set do not belong to the first time-frequency resource pool, wherein the second signaling includes scheduling information of the second radio signal.
In one embodiment, the above base station is characterized in that: the first time-frequency resource set is within a first time window, and a reception time point of the second signaling is used for determining an end time point of the first time window.
In one embodiment, the above base station is characterized in that: the first signaling is a higher-layer signaling, and the second signaling is a physical layer signaling.
In one embodiment, the above base station is characterized in that: the first signaling is used for indicating a first spatial parameter group set associated with the first spatial parameter group; if the first spatial parameter group set includes the second spatial parameter group, the first time-frequency resource set can be used for transmitting a radio signal; if the first spatial parameter group set does not include the second spatial parameter group, the first time-frequency resource set cannot be used for transmitting a radio signal.
In one embodiment, the above base station is characterized in that: a receiver of the first signaling determines autonomously whether to transmit a radio signal in time-frequency resources in the first time-frequency resource pool.
In one embodiment, the above base station is characterized in that: the first spatial parameter group and the second spatial parameter group are associated with a first reference signal resource and a second reference signal resource respectively.
In one embodiment, the above base station is characterized in that: the first spatial parameter group is associated with a first synchronization signal time index, the second spatial parameter group is associated with a second synchronization signal time index, and a relationship between the first synchronization signal time index and the second synchronization signal time index is used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
In one embodiment, the above base station is characterized in that: a physical downlink shared channel is used for transmitting the first signaling, and a physical downlink control channel is used for transmitting the second signaling.
In one embodiment, compared with conventional schemes, the disclosure has the following advantages.
It can be judged, according to a dynamic signaling, whether to transmit a radio signal in preconfigured radio resources employing multi-antenna related information configured through a higher-layer signaling, which improves efficiency of transmission.
Other features, purposes and advantages of the disclosure will become more apparent from the detailed description of non-restrictive embodiments taken in conjunction with the following drawings.
The technical scheme of the disclosure is described below in further detail in conjunction with the drawings. It should be noted that the embodiments in the disclosure and the characteristics of the embodiments may be arbitrarily combined if no conflict is caused.
Embodiment 1 illustrates an example of a flowchart, as shown in
In Embodiment 1, the UE in the disclosure, in turn, receives a first signaling, the first signaling being used for indicating a first time-frequency resource pool and a first spatial parameter group, the first spatial parameter group being associated to the first time-frequency resource pool, and the first time-frequency resource pool including a first time-frequency resource set; receives a second signaling, the second signaling being used for indicating a second spatial parameter group; judges whether the first time-frequency resource set can be used for transmitting a radio signal; if so, transmits a first radio signal in the first time-frequency resource set, an antenna port used for transmitting the first radio signal being related to the first spatial parameter group; otherwise, gives up transmitting a radio signal in the first time-frequency resource set; wherein the first spatial parameter group and the second spatial parameter group are used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
In one subembodiment, the first time-frequency resource pool is reserved to grant-free transmission.
In one subembodiment, the first time-frequency resource pool is reserved to configured grant transmission.
In one subembodiment, the antenna port used for transmitting the first radio signal is unrelated to the second spatial parameter group.
In one subembodiment, the action of giving up radio transmission in the first time-frequency resource pool includes: delaying transmission of information carried by the first radio signal.
In one subembodiment, the action of giving up transmission in the first time-frequency resource pool includes: dropping information carried by the first radio signal.
In one subembodiment, the action of giving up radio transmission in the first time-frequency resource pool includes: puncturing on all Resource Elements (REs) included in the first time-frequency resource pool.
In one subembodiment, the phrase that the first spatial parameter group being associated to the first time-frequency resource pool includes: a precoder generated according to the first spatial parameter group is used by the UE to transmit a radio signal in the first time-frequency resource pool.
In one subembodiment, the phrase that the first spatial parameter group being associated to the first time-frequency resource pool includes: a transmitting beam generated according to the first spatial parameter group is used by the UE to transmit a radio signal in the first time-frequency resource pool.
In one subembodiment, the phrase that the first spatial parameter group being associated to the first time-frequency resource pool includes: the first spatial parameter group is used for determining that radio signals transmitted by the UE in the first time-frequency resource pool are all Quasi-Colocated (QCLed) in space.
In one subembodiment, the phrase that the first spatial parameter group being associated to the first time-frequency resource pool includes: the first spatial parameter group is used for determining that a same receiving beam can be used for receiving radio signals transmitted in the first time-frequency resource pool.
In one subembodiment, the phrase that two radio signals are QCLed in space refers that a spatial parameter group used for receiving one radio signal is used to deduce and obtain a spatial parameter group used for receiving the other radio signal.
In one subembodiment, the phrase that two radio signals are QCLed in space refers that a receiving beam used for receiving one radio signal is used to deduce and obtain a receiving beam used for receiving the other radio signal.
In one subembodiment, the phrase that two radio signals are QCLed in space refers that a receiving beam used for receiving one radio signal is the receiving beam used for receiving the other radio signal.
In one subembodiment, the phrase that two radio signals are QCLed in space includes: channels experienced by two radio signals have same large-scale characteristics.
In one subembodiment, an antenna port used for transmitting a PDCCH in a first control resource set is QCLed to an antenna port used for transmitting a first reference signal group, and the QCL type is QCL Type D in 3GPP TS38.211.
In one subembodiment, the phrase that an antenna port used for transmitting the first radio signal being related to the first spatial parameter group includes: the first spatial parameter group is used for transmitting the first radio signal.
In one subembodiment, the phrase that an antenna port used for transmitting the first radio signal being related to the first spatial parameter group includes: the first spatial parameter group is used for generating a precoder transmitting the first radio signal.
In one subembodiment, the phrase that an antenna port used for transmitting the first radio signal being related to the first spatial parameter group includes: the first spatial parameter group is used for generating an analog beam transmitting the first radio signal.
In one subembodiment, the first signaling is an RRC signaling.
In one subembodiment a Physical Downlink Shared Channel (PDSCH) is used for transmitting the first signaling.
In one subembodiment, an uplink reference signal resource indicator is used for determining the first spatial parameter group.
In one subembodiment, a Sounding Reference Signal (SRS) resource indicator is used for determining the first spatial parameter group.
In one subembodiment, a downlink reference signal resource indicator is used for determining the first spatial parameter group.
In one subembodiment, a Channel State Information Reference Signal (CSI-RS) indicator is used for determining the first spatial parameter group.
In one subembodiment, time-frequency resources in the first time-frequency resource pool occur periodically.
In one subembodiment, the second signaling is Downlink Control Information (DCI).
In one subembodiment, a Physical Downlink Control Channel (PDCCH) is used for transmitting the second signaling.
In one subembodiment, a first receiving beam is used for receiving a radio signal transmitted employing the first spatial parameter group, and a second receiving beam is used for receiving a radio signal transmitted employing the second spatial parameter group; if the first receiving beam can be used for receiving the radio signal transmitted employing the second spatial parameter group, the UE judges that the first time-frequency resource set can be used for transmitting a radio signal; if the first receiving beam cannot be used for receiving the radio signal transmitted employing the second spatial parameter group, the UE judges that the first time-frequency resource cannot be used for transmitting a radio signal.
In one subembodiment, if an angular coverage of the first receiving beam includes an angular coverage of the second receiving beam, the UE judges that the first time-frequency resource set can be used for transmitting a radio signal; if the angular coverage of the first receiving beam does not include the angular coverage of the second receiving beam, the UE judges that the first time-frequency resource set cannot be used for transmitting a radio signal.
In one subembodiment, the first spatial parameter group is used for generating a first transmitting beam, and the second spatial parameter group is used for generating a second transmitting beam; if an angular coverage of the first transmitting beam includes an angular coverage of the second transmitting beam, the UE judges that the first time-frequency resource set can be used for transmitting a radio signal; if the angular coverage of the first transmitting beam does not include the angular coverage of the second transmitting beam, the UE judges that the first time-frequency resource set cannot be used for transmitting a radio signal.
In one subembodiment, the first spatial parameter group and the second spatial parameter group are used for generating a first precoding vector and a second precoding vector respectively; if an inner product of the first precoding vector and the second precoding vector is greater than a first threshold, the UE judges that the first time-frequency resource set can be used for transmitting a radio signal; if the inner product of the first precoding vector and the second precoding vector is not greater than the first threshold, the UE judges that the first time-frequency resource set cannot be used for transmitting a radio signal.
In one subembodiment, the first threshold is configured by a base station.
In one subembodiment, the first threshold is determined by default.
In one subembodiment, the first radio signal is an Orthogonal Frequency Division Multiplexing (OFDM) symbol.
In one subembodiment, the first radio signal is a Discrete Fourier Transform Spread OFDM (DFT-S-OFDM) symbol.
In one subembodiment, a Physical Uplink Shared Channel (PUSCH) is used for transmitting the first radio signal.
In one subembodiment, the UE transmits a second radio signal in a second time-frequency resource set, an antenna port used for transmitting the second radio signal is related to the second spatial parameter group, and time-frequency resources in the second time-frequency resource set do not belonging to the first time-frequency resource pool; wherein the second signaling includes scheduling information of the second radio signal.
In one subembodiment, the scheduling information includes at least one of an indicator regarding the second time-frequency resource set, an antenna port used for transmitting the second radio signal, a modulation mode used for generating the second radio signal, and a coding rate used for generating the second radio signal.
In one subembodiment, a PUSCH is used for transmitting the second radio signal.
In one subembodiment, the first time-frequency resource set is orthogonal to the first time-frequency resource pool.
In one subembodiment, the second time-frequency resource set is used for dynamic grant transmission of a radio signal.
In one subembodiment, the first time-frequency resource set is within a first time window, and a reception time point of the second signaling is used for determining an end time point of the first time window.
In one subembodiment, a deviation between a subframe in which a reception time point of the second signaling is located and a subframe in which a start time point of the first time window is located is determined by default.
In one subembodiment, a deviation between a subframe in which a reception time point of the second signaling is located and a subframe in which a start time point of the first time window is located is configured by a base station.
In one subembodiment, a length of the first time window is determined by default.
In one subembodiment, a length of the first time window is configured by a base station.
In one subembodiment, the first signaling is a higher-layer signaling, and the second signaling is a physical layer signaling.
In one subembodiment, the first signaling is used for indicating a first spatial parameter group set associated with the first spatial parameter group; if the first spatial parameter group set includes the second spatial parameter group, the UE judges that the first time-frequency resource set can be used for transmitting a radio signal; if the first spatial parameter group set does not include the second spatial parameter group, the UE judges that the first time-frequency resource set cannot be used for transmitting a radio signal.
In one subembodiment, a third signaling is a higher-layer signaling.
In one subembodiment, a PDSCH is used for transmitting the third signaling.
In one subembodiment, the first spatial parameter group set includes the first spatial parameter group.
In one subembodiment, the first spatial parameter group is used for determining the first spatial parameter group set.
In one subembodiment, a reference signal resource identifier is used for determining a spatial parameter group.
In one subembodiment, the UE determines autonomously whether to transmit a radio signal in time-frequency resources in the first time-frequency resource pool.
In one subembodiment, the phrase that the UE determines autonomously refers that: if there is no data to transmit, the UE transmits a radio signal in time-frequency resources in the first time-frequency resource pool.
In one subembodiment, the phrase that the UE determines autonomously refers that: a base station serving the UE does not assume the UE must transmit a radio signal in time-frequency resources in the first time-frequency resource pool.
In one subembodiment, the phrase that the UE determines autonomously refers that: a base station serving the UE can determine, only after detection, that the UE transmits a radio signal in time-frequency resources in the first time-frequency resource pool.
In one subembodiment, the first spatial parameter group and the second spatial parameter group are associated with a first reference signal resource and a second reference signal resource respectively.
In one subembodiment, spatial parameter groups and reference signal resource identifiers are in one-to-one correspondence.
In one subembodiment, the first spatial parameter group is associated with a first synchronization signal time index, the second spatial parameter group is associated with a second synchronization signal time index, and a relationship between the first synchronization signal time index and the second synchronization signal time index is used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
In one subembodiment, if the first synchronization signal time index is the same as the second synchronization signal time index, the UE judges that the first time-frequency resource set can be used for transmitting a radio signal; if the first synchronization signal time index is different from the second synchronization signal time index, the UE judges that the first time-frequency resource set cannot be used for transmitting a radio signal.
In one subembodiment, if a difference between the first synchronization signal time index and the second synchronization signal time index is less than a second threshold, the UE judges that the first time-frequency resource set can be used for transmitting a radio signal; if a difference between the first synchronization signal time index and the second synchronization signal time index is not less than a second threshold, the UE judges that the first time-frequency resource set cannot be used for transmitting a radio signal.
In one subembodiment, a physical downlink shared channel is used for transmitting the first signaling, and a physical downlink control channel is used for transmitting the second signaling.
In one subembodiment, the UE has a requirement to transmit the first radio signal.
In one subembodiment, the first signaling is used for grant-free transmission, and the second signaling is used for grant based transmission.
In one subembodiment, the first signaling is terminal group specific, the terminal group includes multiple terminals, the UE is one terminal in the terminal group, and the second signaling is the UE specific.
Embodiment 2 illustrates an example of a network architecture, as shown in
Embodiment 2 illustrates an example of a diagram of a network architecture according to the disclosure, as shown in
In one subembodiment, the UE 201 corresponds to the UE in the disclosure.
In one subembodiment, the gNB 203 corresponds to the base station in the disclosure.
In one subembodiment, the UE 201 is a terminal which supports performing wireless communications on unlicensed spectrum.
In one subembodiment, the UE 201 is a terminal which supports grant-free transmission.
In one subembodiment, the UE 201 is a terminal which supports configured grant transmission.
In one subembodiment, the UE 201 is a terminal which supports beamforming.
In one subembodiment, the UE 201 is a terminal which supports narrow-band LBT.
In one subembodiment, the gNB 203 supports performing wireless communication on unlicensed spectrum.
In one subembodiment, the gNB 203 supports grant-free transmission.
In one subembodiment, the gNB 203 supports configured grant transmission.
In one subembodiment, the gNB 203 supports beamforming based uplink transmission.
Embodiment 3 illustrates an example of a radio protocol architecture of a user plane and a control plane, as shown in
In one subembodiment, the radio protocol architecture shown in
In one subembodiment, the radio protocol architecture shown in
In one subembodiment, the first signaling in the disclosure is generated by the RRC sublayer 306.
In one subembodiment, the second signaling in the disclosure is generated by the PHY 301.
In one subembodiment, the first radio signal in the disclosure is generated by the PDCP sublayer 304.
In one subembodiment, the second radio signal in the disclosure is generated by the PDCP sublayer 304.
Embodiment 4 illustrates an example of a base station and a UE, as shown in
The base station 410 includes a controller/processor 440, a memory 430, a receiving processor 412, a transmitting processor 415, a transmitter/receiver 416 and an antenna 420.
The UE 450 includes a controller/processor 490, a memory 480, a data source 467, a transmitting processor 455, a receiving processor 452, a transmitter/receiver 456 and an antenna 460.
In Uplink (UL) transmission, processes relevant to the base station 410 include the following.
The receiver 416 receives a radio-frequency signal through the corresponding antenna 420, converts the received radio-frequency signal into a baseband signal, and provides the baseband signal to the receiving processor 412.
The receiving processor 412 performs various signal receiving processing functions of L1 layer (that is, PHY), including decoding, de-interleaving, descrambling, demodulation, extraction of physical layer control signalings, etc.
The receiving processor 412 performs various signal receiving processing functions of L1 layer (that is, PHY), including multi-antenna receiving, despreading, code division multiplexing, precoding, etc.
The controller/processor 440 performs functions of L2 layer, and is connected to the memory 430 that stores program codes and data.
The controller/processor 440 provides multiplexing between a transport channel and a logical channel, packet reassembling, decryption, header decompression, and control signal processing so as to recover a higher-layer packet coming from the UE 450. The higher-layer packet from the controller/processor 440 may be provided to a core network.
In UL transmission, processes relevant to the UE 450 include the following.
The data source 467 provides a higher-layer packet to the controller/processor 490. The data source 467 illustrates all protocol layers above L2 layer.
The transmitter 456 transmits a radio-frequency signal through the corresponding antenna 460, converts a baseband signal into a radio-frequency signal and provides the radio-frequency signal to the corresponding antenna 460.
The transmitting processor 455 performs various signal transmitting processing functions of L1 layer (that is, PHY), including encoding, interleaving, scrambling, modulation, generation of physical layer signalings, etc.
The transmitting processor 455 performs various signal transmitting processing functions of L1 layer (that is, PHY), including multi-antenna transmitting, spreading, code division multiplexing, precoding, etc.
The controller/processor 490 performs header compression, encryption, packet segmentation and reordering, and multiplexing between a logical channel and a transport channel based on the radio resource allocation of the gNB 410, and performs functions of L2 layer used for the user plane and the control plane.
The controller/processor 490 is also in charge of HARQ operation, retransmission of lost packets, and signalings to the eNB 410.
In Downlink (DL) transmission, processes relevant to the base station device 410 include the following.
A higher-layer packet is provided to the controller/processor 440. The controller/processor 440 provides header compression, encryption, packet segmentation and reordering, multiplexing and de-multiplexing between a logical channel and a transport channel, to implement the L2 protocol used for the user plane and the control plane. The higher-layer packet may include data or control information, for example, Downlink Shared Channel (DL-SCH).
The controller/processor 440 is connected to the memory 430 that stores program codes and data. The memory 430 may be a computer readable medium.
The controller/processor 440 includes a scheduling unit used for transmission requirements. The scheduling unit is configured to schedule air interface resources corresponding to transmission requirements.
The controller/processor 440 determines to transmit downlink signalings/data to be transmitted, and sends the result to the transmitting processor 415.
The transmitting processor 415 receives a bit stream output from the controller/processor 440, and performs various signal transmitting processing functions of L1 layer (that is, PHY), including encoding, interleaving, scrambling, modulation, precoding, power control/allocation, generation of physical layer control signalings (including PBCH, PDCCH, PHICH, PCFICH, reference signal), etc.
The transmitter 416 is configured to convert the baseband signal provided by the transmitting processor 415 into a radio-frequency signal and transmit the radio-frequency signal via the antenna 420. Each transmitter 416 performs sampling processing on respective input symbol streams to obtain respective sampled signal streams. Each transmitter 416 performs further processing (for example, digital-to-analogue conversion, amplification, filtering, up conversion, etc.) on respective sampled streams to obtain a downlink signal.
In DL transmission, processes relevant to the UE 450 include the following.
The receiver 456 is configured to convert a radio-frequency signal received via the antenna 460 into a baseband signal and provide the baseband signal to the receiving processor 452.
The receiving processor 452 performs various signal receiving processing functions of L1 layer (that is, PHY), including multi-antenna receiving, demodulation, descrambling, de-interleaving, decoding, and extraction of physical layer control signalings, etc.
The controller/processor 490 receives a bit stream output from the receiving processor 452, and provides header decompression, decryption, packet segmentation and reordering, multiplexing and de-multiplexing between a logical channel and a transport channel, to implement L2 protocols used for the user plane and the control plane.
The controller/processor 490 is connected to the memory 480 that stores program codes and data. The memory 480 may be a computer readable medium.
In one subembodiment, the UE 450 includes 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 UE 450 at least receives a first signaling, the first signaling being used for indicating a first time-frequency resource pool and a first spatial parameter group, the first spatial parameter group being associated to the first time-frequency resource pool, and the first time-frequency resource pool including a first time-frequency resource set; receives a second signaling, the second signaling being used for indicating a second spatial parameter group; and judges whether the first time-frequency resource set can be used for transmitting a radio signal; if so, transmits a first radio signal in the first time-frequency resource set, an antenna port used for transmitting the first radio signal being related to the first spatial parameter group; otherwise, gives up transmitting a radio signal in the first time-frequency resource set; wherein the first spatial parameter group and the second spatial parameter group are used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
In one embodiment, the UE 450 includes 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 first signaling, the first signaling being used for indicating a first time-frequency resource pool and a first spatial parameter group, the first spatial parameter group being associated to the first time-frequency resource pool, and the first time-frequency resource pool including a first time-frequency resource set; receiving a second signaling, the second signaling being used for indicating a second spatial parameter group; and judging whether the first time-frequency resource set can be used for transmitting a radio signal; if so, transmitting a first radio signal in the first time-frequency resource set, an antenna port used for transmitting the first radio signal being related to the first spatial parameter group; otherwise, giving up transmitting a radio signal in the first time-frequency resource set; wherein the first spatial parameter group and the second spatial parameter group are used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
In one subembodiment, the gNB 410 device includes 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 gNB 410 at least transmits a first signaling, the first signaling being used for indicating a first time-frequency resource pool and a first spatial parameter group, the first spatial parameter group being associated to the first time-frequency resource pool, and the first time-frequency resource pool including a first time-frequency resource set; transmits a second signaling, the second signaling being used for indicating a second spatial parameter group; and detecting a first radio signal in the first time-frequency resource set, or, giving up detecting a first radio signal in the first time-frequency resource set; wherein the first spatial parameter group and the second spatial parameter group are used for indicating whether the first time-frequency resource set can be used for transmitting a radio signal.
In one subembodiment, the gNB 410 includes 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 first signaling, the first signaling being used for indicating a first time-frequency resource pool and a first spatial parameter group, the first spatial parameter group being associated to the first time-frequency resource pool, and the first time-frequency resource pool including a first time-frequency resource set; transmitting a second signaling, the second signaling being used for indicating a second spatial parameter group; and detecting a first radio signal in the first time-frequency resource set, or, giving up detecting a first radio signal in the first time-frequency resource set; wherein the first spatial parameter group and the second spatial parameter group are used for indicating whether the first time-frequency resource set can be used for transmitting a radio signal.
In one subembodiment, the UE 450 corresponds to the UE in the present disclosure.
In one subembodiment, the gNB 410 corresponds to the base station in the present disclosure.
In one subembodiment, at least the former two of the receiver 456, the receiving processor 452 and the controller/processor 490 are used for receiving the first signaling in the disclosure.
In one subembodiment, at least the former two of the receiver 456, the receiving processor 452 and the controller/processor 490 are used for receiving the second signaling in the disclosure.
In one subembodiment, at least the former one of the transmitting processor 455 and the controller/processor 490 judges whether the first time-frequency resource set can be used for transmitting a radio signal.
In one subembodiment, at least the former two of the transmitter 456, the transmitting processor 455 and the controller/processor 490 transmit the first radio signal in the disclosure.
In one subembodiment, at least the former two of the transmitter 416, the transmitting processor 415 and the controller/processor 440 are used for transmitting the first signaling in the disclosure.
In one subembodiment, at least the former two of the transmitter 416, the transmitting processor 415 and the controller/processor 440 are used for transmitting the second signaling in the disclosure.
In one subembodiment, at least the former two of the receiver 416, the receiving processor 412 and the controller/processor 440 are used for monitoring the first radio signal in the disclosure.
Embodiment 5 illustrates an example of a flowchart of wireless transmission, as shown in
The base station N1 transmits a first signaling in S11, transmits a second signaling in S12, receives a second radio signal in S13, and receives a first radio signal in S14.
The UE U2 receives a first signaling in S21, receives a second signaling in S22, transmits a second radio signal in S23, judges whether a first time-frequency resource set can be used for transmitting a radio signal in S24, and transmits a first radio signal in S25.
In Embodiment 5, the first signaling is used by the N1 to indicate a first time-frequency resource pool and a first spatial parameter group, the first spatial parameter group is associated to the first time-frequency resource pool, and the first time-frequency resource pool includes a first time-frequency resource set; the second signaling is used by the N1 to indicate a second spatial parameter group; the U2 judges whether the first time-frequency resource set can be used for transmitting a radio signal; if so, the step in box F2 exists, the U2 transmits a first radio signal in the first time-frequency resource set, an antenna port used for transmitting the first radio signal being related to the first spatial parameter group; otherwise, the U2 gives up transmitting a radio signal in the first time-frequency resource set; the N1 monitors a first radio signal in the first time-frequency resource set, or gives up monitoring a radio signal in the first time-frequency resource set; the first spatial parameter group and the second spatial parameter group are used by the U2 to judge whether the first time-frequency resource set can be used for transmitting a radio signal.
In one subembodiment, the step in box F1 exists, an antenna port used by the U2 to transmit the second radio signal is related to the second spatial parameter group, and time-frequency resources in the second time-frequency resource set do not belong to the first time-frequency resource pool; wherein the second signaling includes scheduling information of the second radio signal.
In one subembodiment, the first time-frequency resource set is within a first time window, and a reception time point of the second signaling is used for determining an end time point of the first time window.
In one subembodiment, the first signaling is a higher-layer signaling, and the second signaling is a physical layer signaling.
In one subembodiment, the first signaling is used by the N1 to indicate a first spatial parameter group set associated with the first spatial parameter group; if the first spatial parameter group set includes the second spatial parameter group, the U2 judges that the first time-frequency resource set can be used for transmitting a radio signal; if the first spatial parameter group set does not include the second spatial parameter group, the U2 judges that the first time-frequency resource set cannot be used for transmitting a radio signal.
In one subembodiment, the U2 determines autonomously whether to transmit a radio signal in time-frequency resources in the first time-frequency resource pool.
In one subembodiment, the first spatial parameter group and the second spatial parameter group are associated with a first reference signal resource and a second reference signal resource respectively.
In one subembodiment, the first spatial parameter group is associated with a first synchronization signal time index, the second spatial parameter group is associated with a second synchronization signal time index, and a relationship between the first synchronization signal time index and the second synchronization signal time index is used by the U2 to judge whether the first time-frequency resource set can be used for transmitting a radio signal.
In one subembodiment, a physical downlink shared channel is used for transmitting the first signaling, and a physical downlink control channel is used for transmitting the second signaling.
Embodiment 6 illustrates an example of a diagram of a first spatial parameter group and a second spatial parameter group, as shown in
In Embodiment 6, the first spatial parameter group and the second spatial parameter group are used for generating a first beam and a second beam respectively. The first beam and the second beam are used for transmitting the first radio signal and the second radio signal in the disclosure respectively. In
Embodiment 7 illustrates an example of a diagram of an antenna port group used for transmitting a radio signal, as shown in
In Embodiment 7, one antenna port group includes a positive integer number of antenna ports; one antenna port is formed by antennas in a positive integer number of antenna groups through antenna virtualization superposition; one antenna group includes a positive integer number of antennas. One antenna group is connected to a baseband processor through one Radio Frequency (RF) chain, and different antenna groups correspond to different RF chains. Mapping coefficients from all antennas in a positive integer number of antenna groups included in a given antenna port to the given antenna port constitute a beamforming vector corresponding to the given antenna port. Mapping coefficients from multiple antennas included in any one given antenna group among a positive integer number of antenna groups included in the given antenna port to the given antenna port constitute an analog beamforming vector of the given antenna group. Analog beamforming vectors corresponding to the positive integer number of antenna groups are diagonally arranged to form an analog beamforming matrix corresponding to the given antenna port. Mapping coefficients from the positive integer number of antenna groups to the given antenna port constitute a digital beamforming vector corresponding to the given antenna port. The beamforming vector corresponding to the given antenna port is obtained by a product of the analog beamforming matrix and the digital beamforming vector corresponding to the given antenna port. Different antenna ports in one antenna port group are formed by same antenna group(s), and different antenna ports in one same antenna port group correspond to different beamforming vectors.
In one subembodiment, one antenna port group includes one antenna port. For example, the antenna port group #0 illustrated in
In one affiliated embodiment of the above subembodiment, an analog beamforming matrix corresponding to the one antenna port is dimensionally reduced to an analog beamforming vector, a digital beamforming vector corresponding to the one antenna port is dimensionally reduced to one scalar, and a beamforming vector corresponding to the one antenna port is equal to the analog beamforming vector of the one antenna port.
In one subembodiment, one antenna port group includes multiple antenna ports.
In one affiliated embodiment of the above subembodiment, the multiple antenna ports correspond to a same analog beamforming matrix and different digital beamforming vectors.
In one subembodiment, antenna ports in different antenna port groups correspond to different analog beamforming matrixes.
Embodiment 8 illustrates an example of a structure block diagram of a processing device in a UE, as shown in
The first receiver 801 receives a first signaling.
The second receiver 802 receives a second signaling.
The third transmitter 803 judges whether the first time-frequency resource set can be used for transmitting a radio signal.
In Embodiment 8, the first signaling is used for indicating a first time-frequency resource pool and a first spatial parameter group, the first spatial parameter group is associated to the first time-frequency resource pool, and the first time-frequency resource pool includes a first time-frequency resource set; the second signaling is used for indicating a second spatial parameter group; and the third transmitter 803 judges whether the first time-frequency resource set can be used for transmitting a radio signal; if so, the third transmitter 803 transmits a first radio signal in the first time-frequency resource set, an antenna port used for transmitting the first radio signal being related to the first spatial parameter group; otherwise, the third transmitter 803 gives up transmitting a radio signal in the first time-frequency resource set; wherein the first spatial parameter group and the second spatial parameter group are used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
In one subembodiment, the third transmitter 803 transmits a second radio signal in a second time-frequency resource set, an antenna port used for transmitting the second radio signal is related to the second spatial parameter group, and time-frequency resources in the second time-frequency resource set do not belong to the first time-frequency resource pool, wherein the second signaling includes scheduling information of the second radio signal.
In one subembodiment, the first time-frequency resource set is within a first time window, and a reception time point of the second signaling is used for determining an end time point of the first time window.
In one subembodiment, the first signaling is a higher-layer signaling, and the second signaling is a physical layer signaling.
In one subembodiment, the first signaling is used for indicating a first spatial parameter group set associated with the first spatial parameter group; if the first spatial parameter group set includes the second spatial parameter group, the UE judges that the first time-frequency resource set can be used for transmitting a radio signal; if the first spatial parameter group set does not include the second spatial parameter group, the UE judges that the first time-frequency resource set cannot be used for transmitting a radio signal.
In one subembodiment, the UE determines autonomously whether to transmit a radio signal in time-frequency resources in the first time-frequency resource pool.
In one subembodiment, the first spatial parameter group and the second spatial parameter group are associated with a first reference signal resource and a second reference signal resource respectively.
In one subembodiment, the first spatial parameter group is associated with a first synchronization signal time index, the second spatial parameter group is associated with a second synchronization signal time index, and a relationship between the first synchronization signal time index and the second synchronization signal time index is used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
In one subembodiment, a physical downlink shared channel is used for transmitting the first signaling, and a physical downlink control channel is used for transmitting the second signaling.
In one subembodiment, the first receiver 801 includes at least the former two of the receiver 456, the receiving processor 452 and the controller/processor 490 mentioned in Embodiment 4.
In one subembodiment, the second receiver 802 includes at least the former two of the receiver 456, the receiving processor 452 and the controller/processor 490 mentioned in Embodiment 4.
In one subembodiment, the third transmitter 803 includes at least the former two of the transmitter 456, the transmitting processor 455 and the controller/processor 490 mentioned in Embodiment 4.
Embodiment 9 illustrates an example of a structure block diagram of a processing device in a base station, as shown in
The first transmitter 901 transmits a first signaling.
The second transmitter 902 transmits a second signaling.
The third receiver 903 monitors a first radio signal in the first time-frequency resource set, or, to gives up monitoring a radio signal in the first time-frequency resource set.
In Embodiment 9, the first signaling is used for indicating a first time-frequency resource pool and a first spatial parameter group, the first spatial parameter group is associated to the first time-frequency resource pool, and the first time-frequency resource pool includes a first time-frequency resource set; a second signaling is transmitted, and the second signaling is used for indicating a second spatial parameter group; and the first spatial parameter group and the second spatial parameter group are used for indicating whether the first time-frequency resource set can be used for transmitting a radio signal.
In one subembodiment, the third receiver 903 receives a second radio signal in a second time-frequency resource set, an antenna port used for transmitting the second radio signal is related to the second spatial parameter group, and time-frequency resources in the second time-frequency resource set do not belong to the first time-frequency resource pool, wherein the second signaling includes scheduling information of the second radio signal.
In one subembodiment, the first time-frequency resource set is within a first time window, and a reception time point of the second signaling is used for determining an end time point of the first time window.
In one subembodiment, the first signaling is a higher-layer signaling, and the second signaling is a physical layer signaling.
In one subembodiment, the first signaling is used for indicating a first spatial parameter group set associated with the first spatial parameter group; if the first spatial parameter group set includes the second spatial parameter group, the first time-frequency resource set can be used for transmitting a radio signal; if the first spatial parameter group set does not include the second spatial parameter group, the first time-frequency resource set cannot be used for transmitting a radio signal.
In one subembodiment, a receiver of the first signaling determines autonomously whether to transmit a radio signal in time-frequency resources in the first time-frequency resource pool.
In one subembodiment, the first spatial parameter group and the second spatial parameter group are associated with a first reference signal resource and a second reference signal resource respectively.
In one subembodiment, the first spatial parameter group is associated with a first synchronization signal time index, the second spatial parameter group is associated with a second synchronization signal time index, and a relationship between the first synchronization signal time index and the second synchronization signal time index is used for judging whether the first time-frequency resource set can be used for transmitting a radio signal.
In one subembodiment, a physical downlink shared channel is used for transmitting the first signaling, and a physical downlink control channel is used for transmitting the second signaling.
In one subembodiment, the first transmitter 901 includes at least the former two of the transmitter 416, the transmitting processor 415 and the controller/processor 440 mentioned in Embodiment 4.
In one subembodiment, the second transmitter 902 includes at least the former two of the transmitter 416, the transmitting processor 415 and the controller/processor 440 mentioned in Embodiment 4.
In one subembodiment, the third receiver 903 includes at least the former two of the receiver 416, the receiving processor 412 and the controller/processor 440 mentioned in Embodiment 4.
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 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 unmanned aerial vehicles, communication modules on unmanned aerial vehicles, telecontrolled aircrafts, aircrafts, diminutive airplanes, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, wireless sensor, network cards, terminals for Internet of Things, REID terminals, NB-IOT terminals, Machine Type Communication (MTC) terminals, enhanced MTC (eMTC) terminals, data cards, low-cost mobile phones, low-cost tablet computers, and other radio communication equipment. The base station in the present application includes but not limited to macro-cellular base stations, micro-cellular base stations, home base stations, relay base station, gNB (NR node B), TRP, and other radio communication equipment.
The above are merely the preferred embodiments of the disclosure and are not intended to limit the scope of protection of the disclosure. Any modification, equivalent substitute and improvement made within the spirit and principle of the disclosure are intended to be included within the scope of protection of the disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201810799906.2 | Jul 2018 | CN | national |
