WO2019191897A1 - 空闲信道侦听方法、装置及设备 - Google Patents
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- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
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Definitions
- the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method, device, and device for detecting an idle channel.
- the device In the New Radio (NR) system, the device is allowed to use an unlicensed spectrum for signal transmission.
- NR New Radio
- the device Before using the unlicensed spectrum for signal transmission, the device must follow the principle of listen-before-talk (LBT), that is, the device needs to perform Clear Channel Assessment (CCA) to determine the channel of the unlicensed spectrum. Whether it is available and, if it is determined to be available, transmits a signal through the channel of the unlicensed spectrum.
- LBT listen-before-talk
- CCA Clear Channel Assessment
- the embodiment of the present application provides a method, device, and device for detecting an idle channel.
- the embodiment of the present application provides a method for listening to an idle channel, where the method includes:
- a set of signal blocks comprising n signal blocks, each signal block comprising at least one signal and/or at least one channel, the n being an integer greater than one;
- the signal block included in the set of signal blocks is transmitted using the channel of the unlicensed spectrum.
- the embodiment of the present application provides an idle channel listening device, where the device includes:
- a set determining module configured to determine a set of signal blocks, the set of signal blocks comprising n signal blocks, each signal block comprising at least one signal and/or at least one channel, the n being an integer greater than one;
- a channel listening module configured to perform a CCA on the channel of the unlicensed spectrum before transmitting the signal block included in the signal block set;
- a signal sending module configured to: when the result of the CCA is that the channel of the unlicensed spectrum is available, use the channel of the unlicensed spectrum to send a signal block included in the signal block set.
- an embodiment of the present application provides an access network device, where the access network device includes a processor and a memory, where the memory stores at least one instruction, where the at least one instruction is used by the processor.
- an embodiment of the present application provides a computer readable storage medium, where the storage medium stores at least one instruction for being executed by a processor to implement the method described in the foregoing aspect.
- the embodiment of the present application provides a solution for transmitting a signal block by using an unlicensed spectrum in an NR system, which solves the problem that the interval between signal blocks cannot meet the CCA detection time, and is convenient for the access network device to perform when transmitting the signal block.
- the directional LBT improves the transmission success rate.
- FIG. 1 is a schematic structural diagram of a mobile communication system according to an embodiment of the present application.
- FIG. 2 exemplarily shows a schematic diagram of the distribution of SSBs in the time domain at 15 kHz subcarrier spacing
- 3A and 3B exemplarily show a distribution diagram of SSB in the time domain at 30 kHz subcarrier spacing
- FIG. 4 exemplarily shows a schematic diagram of the distribution of SSBs in the time domain at 120 kHz and 240 kHz subcarrier spacing
- FIG. 5 is a flowchart of a method for listening to an idle channel according to an embodiment of the present application
- FIG. 6A exemplarily shows a schematic diagram of candidate locations of SSBs defined in an SSB set
- FIG. 6B exemplarily shows a distribution diagram of an actually transmitted SSB
- FIG. 6C exemplarily shows a distribution diagram of another actually transmitted SSB
- FIG. 7 exemplarily shows a schematic diagram of performing CCA when transmitting a plurality of SSB sets
- FIG. 8 is a block diagram of an idle channel listening apparatus according to an embodiment of the present application.
- FIG. 9 is a schematic structural diagram of an access network device according to an embodiment of the present application.
- a “module” as referred to herein generally refers to a program or instruction stored in a memory that is capable of performing certain functions;
- "unit” as referred to herein generally refers to a functional structure that is logically divided, the "unit” It can be implemented by pure hardware or a combination of hardware and software.
- Multiple as referred to herein means two or more. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
- the character “/” generally indicates that the contextual object is an "or” relationship.
- the words “first”, “second” and similar terms used in the specification and claims of the present application do not denote any order, quantity, or importance, but are merely used to distinguish different components.
- FIG. 1 is a schematic structural diagram of a mobile communication system according to an embodiment of the present application.
- the mobile communication system can include an access network device 10 and a terminal 20.
- the access network device 10 is deployed in the radio access network to provide the terminal 20 with a wireless access function.
- the access network device may be a base station (BS).
- Access network device 10 can communicate wirelessly with terminal 20 via one or more antennas.
- Access network device 10 can provide communication coverage for its geographic area.
- the base station may include different types such as a macro base station, a micro base station, a relay station, and an access point.
- the base station may be referred to by those skilled in the art as a base transceiver station, a wireless base station, an access point, a wireless transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS). ), Node B (NodeB), evolved Node B (eNB or eNodeB) or some other suitable terminology.
- a base station is referred to as a gNB.
- the foregoing apparatus for providing the wireless communication function to the terminal 20 is collectively referred to as an access network device.
- the terminal 20 can be interspersed throughout the mobile communication system, and each terminal 20 can be stationary or mobile.
- the terminal 20 can also be referred to by a person skilled in the art as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a user equipment, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, and a connection.
- the terminal 20 can be a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a tablet, a laptop, a cordless phone, a Wireless Local Loop (WLL). Station and so on.
- the terminal 20 is capable of communicating with the access network device 10 in the mobile communication system.
- the access network device 10 and the terminal 20 can communicate with each other through air interface technology, for example, by cellular technology.
- the communication link between the access network device 10 and the terminal 20 may include: downlink (DL) transmission from the access network device 10 to the terminal 20, and/or, from the terminal 20 to the access network device 10 uplink (up link, UP) transmission.
- Downlink transmissions may also be referred to as forward link transmissions, and uplink transmissions may also be referred to as reverse link transmissions.
- the downlink transmission may include transmission of a discovery signal, which may include a reference signal and/or a synchronization signal.
- the communication link can include one or more carriers, where each carrier can be a signal composed of a plurality of subcarriers modulated according to various wireless technologies (eg, waveform signals of different frequencies). Each modulated signal can be transmitted on a different subcarrier and can carry control information (eg, reference signals, control channels, etc.), overhead information, user data, and the like.
- control information eg, reference signals, control channels, etc.
- the mobile communication system shown in FIG. 1 may be a Long Term Evolution (LTE) system, or may be a next-generation evolution system based on an LTE system, such as an LTE-A (LTE-Advanced) system or a fifth generation (5th).
- LTE Long Term Evolution
- 5G Next-generation evolution system
- 5G also known as NR system
- LAA licensed-assisted access
- the unlicensed spectrum is a spectrum of national and regional divisions that can be used for radio communication. This spectrum is generally considered to be a shared spectrum. That is, communication equipment in different communication systems can meet the regulatory requirements set by the country or region. With this spectrum, there is no need to apply for a proprietary spectrum license from the government.
- the unlicensed spectrum may also be referred to by those skilled in the art as unlicensed spectrum, shared spectrum, unlicensed bands, unlicensed bands, shared bands, unlicensed spectrum, unlicensed bands, or some other suitable terminology.
- the Third Generation Partnership Project (3GPP) is discussing NR unlicensed technology for communication using NR technology on the unlicensed spectrum.
- signals are mostly transmitted using directional beams due to the use of higher frequency bands.
- channel interference such as CCA
- the ideal way is to use directional channel sensing, that is, directional LBT.
- the directional beam can be used to transmit the signal to occupy the channel.
- directional LBT can increase access opportunities because channel occupancy in different beam directions can be performed simultaneously by space division multiplexing.
- SSB Synchronization Signal Block
- one SSB occupies 4 symbols (that is, Orthogonal Frequency Division Multiplexing (OFDM) symbols), including: 1 symbol of Primary Synchronized Signal (PSS), 1 The symbol's Secondary Synchronized Signal (SSS) and the two-symbol Physical Broadcast Channel (PBCH). Within the SSB, symbols are numbered from 0 to 3 in ascending order. In the frequency domain, one SSB occupies 24 consecutive Resource Blocks (RBs). Each RB includes 12 subcarriers, and the subcarriers in the above 24 RBs are numbered from 0 to 287 in ascending order, starting with the lowest numbered RB.
- OFDM Orthogonal Frequency Division Multiplexing
- PSS and SSS the resource maps to the middle 127th subcarrier; for PBCH, the resource maps to the 288th subcarrier.
- PSS, SSS, and PBCH have the same Cyclic Prefix (CP) length and subcarrier spacing.
- the subcarrier spacing can be configured to be 15 kHz, 30 kHz, 120 kHz, and 240 kHz.
- the SSBs are organized into a series of bursts that are sent periodically.
- FIG. 2 exemplarily shows a distribution diagram of SSB in the time domain when the subcarrier spacing is 15 kHz.
- One SSB occupies four consecutive symbols, and there are two symbol transmission intervals between two adjacent SSBs.
- FIG. 3A and FIG. 3B are diagrams showing the distribution of SSB in the time domain when the subcarrier spacing is 30 kHz.
- the first mode as shown in FIG. 3A, one SSB occupies four consecutive symbols, and there is no transmission time interval between two adjacent SSBs.
- the second mode as shown in FIG. 3B, one SSB occupies four consecutive symbols, and there are two symbol transmission intervals between two adjacent SSBs.
- FIG. 4 shows a schematic diagram of the distribution of SSBs in the time domain when the subcarrier spacing is 120 kHz and 240 kHz.
- One SSB occupies four consecutive symbols, and there is no transmission time interval between two adjacent SSBs.
- FIG. 5 is a flowchart of a method for listening to a clear channel provided by an embodiment of the present application.
- the method is applicable to the access network device 10 of the mobile communication system shown in FIG.
- the method can include the following steps:
- step 501 a set of signal blocks is determined.
- a set of signal blocks is defined.
- the set of signal blocks includes n signal blocks, n being an integer greater than 1, ie, two or more signal blocks are included in the set of signal blocks.
- Each signal block includes at least one signal and/or at least one channel.
- the above signal block is an SSB.
- the access network device 10 can determine the SSB set, which includes two or more SSBs in the SSB set.
- each of the signal blocks includes at least one signal and/or at least one channel in association with an SSB.
- each of the signal blocks includes: an SSB, and at least one signal and/or at least one channel associated with the one SSB.
- the at least one signal includes at least one of a channel state information-reference signal (CSI-RS), a phase-tracking reference signal (PTRS), and a demodulation reference signal (Demodulation).
- CSI-RS channel state information-reference signal
- PTRS phase-tracking reference signal
- Demodulation demodulation reference signal
- Reference signal, DMRS DMRS
- the at least one channel includes at least one of the following channels: a channel carrying Remaining minimum system information (RMSI), a Physical Downlink Control Channel (PDCCH) associated with the RMSI, and a paging information carrying the paging information.
- RMSI Remaining minimum system information
- PDCCH Physical Downlink Control Channel
- OSI system information
- the division of the signal block set may be predefined (as defined by standards or protocols), or may be custom configured by the access network device 10, for example, by the upper layer of the access network device 10, and then notified to the lower layer.
- two adjacent signal blocks that are spaced apart in the time domain by less than the execution time of the CCA are divided into the same set of signal blocks.
- the execution time of the CCA refers to the time required to execute a complete CCA process, and the execution duration can be determined according to actual conditions, for example, according to the priority of the executed CCA.
- a plurality of SSBs are distributed in the time domain, wherein the interval between the first SSB and the second SSB in the time domain is t1, the second SSB and the third SSB.
- the interval in the time domain is t2
- the interval between the third SSB and the fourth SSB in the time domain is t1
- the interval between the fourth SSB and the fifth SSB in the time domain is t2, and so on.
- the first SSB and the second SSB can be divided into the same SSB set, and the third SSB and the fourth SSB are divided into the same SSB set. Divide the 5th SSB and the 6th SSB into the same SSB set, and so on.
- At least two signal blocks belonging to the same time domain partitioning interval in the time domain are divided into the same signal block set.
- the time domain partitioning interval is any one of the following: one subframe, half subframe, one slot, two or more slots. This division is simple and intuitive.
- two adjacent signal blocks belonging to the same time domain division interval in the time domain and having an interval smaller than the execution duration of the CCA may be divided into the same signal block set.
- the distribution state of the n signal blocks included in the signal block set may include the following cases:
- any two adjacent signal blocks of the n signal blocks included in the set of signal blocks have no transmission time interval in the time domain. That is, n signal blocks adjacent to each other without a spacing symbol between the two are combined into one signal block set.
- the signal block as the SSB as an example, as shown in FIG. 3A, the 30 kHz subcarrier spacing or the 120 kHz subcarrier spacing shown in FIG. 4, two adjacent SSBs may be combined into one SSB set; In the case of a 240 kHz subcarrier spacing, four adjacent SSBs can be combined into one SSB set.
- the foregoing sending time interval is less than or equal to m symbols, and m is a positive integer. That is, n signal blocks that are adjacent and spaced within m symbols form a set of signal blocks.
- the value of the above m may be set according to parameters such as the subcarrier spacing and the execution time of the CCA. For example, the duration of the corresponding time of the m symbols in the time domain is close to the execution time of the CCA, which is not limited in this embodiment of the present application. Taking the signal block as the SSB as an example, as shown in FIG.
- the 15 kHz subcarrier spacing or the 30 kHz subcarrier spacing shown in FIG. 3B two adjacent SSBs separated by two symbols may be combined into one SSB set; In the case of the 30 kHz subcarrier spacing as shown in FIG. 3B, four adjacent SSBs separated by less than or equal to four symbols may be combined into one SSB set.
- four SSBs adjacent and separated by less than or equal to 4 symbols may be combined into one SSB set, in which case the first SSB and the second one.
- There is no transmission time interval between SSBs there is no transmission time interval between the third SSB and the fourth SSB, and there is a transmission interval of 4 symbols between the second SSB and the third SSB.
- the beam directions of the n signal blocks included in the signal block set are similar, that is, the beam directions of the n signal blocks belong to the same sector area.
- the beam direction of a signal block refers to the direction in which the beam used to transmit the signal block is transmitted.
- the central angle of the fan-shaped area may be defined in advance, such as 60°, 90°, or 120°, which is not limited in the embodiment of the present application. In the above manner, it helps to improve the transmission success rate of the signal block.
- Step 502 Perform CCA once for the channel of the unlicensed spectrum before transmitting the signal block included in the signal block set.
- the access network device 10 performs a CCA on the channel of the unlicensed spectrum before using the signal block included in the unlicensed spectrum transmission signal block set.
- the access network device 10 performs CCA once before transmitting the first signal block actually needed to be sent in the signal block set; and any two adjacent signal blocks in the transmitted signal block set. CCA is not executed between, that is, before the second to last signal block in the set of signal blocks is transmitted.
- the access network device 10 performs a directional CCA.
- the direction of the CCA is the same as the beam direction of any one of the signal block sets.
- the direction of the CCA is different from the beam direction of each of the signal blocks in the set of signal blocks.
- the direction of the CCA is the combined direction of the beam directions of the n signal blocks included in the set of signal blocks. For example, multiple narrow beams are combined into one wide beam, and the direction of the CCA may be the direction corresponding to the wide beam.
- Step 503 If the result of the CCA is that the channel of the unlicensed spectrum is available, the signal block included in the signal block set is transmitted using the channel of the unlicensed spectrum.
- the n signal blocks defined in the signal block set refer to a candidate location for signal block. That is, for a candidate location of any one of the signal blocks, the access network device 10 can select whether to actually transmit a signal block at the candidate location according to actual needs.
- candidate positions of 4 SSBs are defined in the SSB set.
- the access network device 10 determines that the SSB is not transmitted at the candidate positions of the first and third SSBs, and the SSB is transmitted at the candidate positions of the second and fourth SSBs, according to the actual demand.
- the distribution diagram is shown in Figure 6B.
- the access network device 10 determines that the SSBs are transmitted at the candidate positions of the first to fourth SSBs according to actual requirements, and the distribution of the actually transmitted SSBs is as shown in FIG. 6C.
- the CCA is performed once before the first signal block that needs to be sent in the first set of the sent signal block, and the first part is sent immediately after the channel that completes the CCA and the result of the CCA is available for the unlicensed spectrum is available.
- a block of signals that actually needs to be sent That is, there is no time interval between the execution completion time of the CCA and the transmission time of the first signal block that needs to be sent in the signal block set, so that the SSB can be prevented from being sent in time when the determined channel is available, and the signal is actually transmitted.
- the transmission success rate of the signal block is improved to avoid signal interference.
- the CCA is executed once before the first SSB actually needs to be transmitted, and the first SSB actually required to be transmitted is transmitted immediately after the execution is completed.
- the access network device 10 transmits a signal block to the terminal 20.
- the signal block included in the signal block set may be sent by using a beam scanning method, that is, different beam blocks may be sent by using different beams; or may be sent by using a non-beam scanning method, for example, two or two are transmitted by using the same beam. More than one signal block is not limited in this embodiment of the present application.
- CCA is performed once again on the channel of the unlicensed spectrum before the channel of the unlicensed spectrum is transmitted using the channel of the unlicensed spectrum. That is, CCA needs to be performed once before sending any one of the signal block sets using the channel of the unlicensed spectrum. For example, as described in FIG. 7, CCA needs to be performed once before any SSB set is transmitted using the channel of the unlicensed spectrum.
- the embodiment of the present application provides a solution for transmitting a signal block using an unlicensed spectrum in an NR system, which can be considered as an omnidirectional LBT and a direction LBT before each signal block.
- a compromise solution of the solution solves the problem that the interval between signal blocks cannot meet the CCA detection time, and facilitates the access network device to perform appropriate directional LBT when transmitting the signal block, thereby improving the transmission success rate.
- the solution provided by the embodiment of the present application does not need to change the distribution design of the defined SSB, and does not increase the transmission delay of the SSB.
- FIG. 8 is a block diagram of an idle channel listening apparatus provided by an embodiment of the present application.
- the apparatus has a function of implementing the above-described method examples, and the functions may be implemented by hardware, or may be implemented by hardware corresponding software.
- the device is the access network device 10 described above.
- the apparatus may include a set determining module 810, a channel listening module 820, and a signal sending module 830.
- the set determining module 810 is configured to determine a set of signal blocks, the set of signal blocks comprising n signal blocks, each of the signal blocks comprising at least one signal and/or at least one channel, the n being an integer greater than one.
- the channel listening module 820 is configured to perform CCA once for the channel of the unlicensed spectrum before transmitting the signal block included in the set of signal blocks.
- the signal sending module 830 is configured to: when the result of the CCA is that the channel of the unlicensed spectrum is available, use the channel of the unlicensed spectrum to send a signal block included in the signal block set.
- the signal block is an SSB.
- each of the signal blocks includes at least one signal and/or at least one channel associated with an SSB.
- each of the signal blocks includes: an SSB, and at least one signal and/or at least one channel associated with the one SSB.
- the at least one signal comprises at least one of the following signals: CSI-RS, PTRS, DMRS.
- the at least one channel comprises at least one of the following channels: an RMSI-bearing channel, an RMSI-associated PDCCH, a channel carrying paging information, a paging information associated PDCCH, an OSI-bearing channel, and an OSI-associated PDCCH. .
- the one-time CCA is performed prior to transmitting the first signal block in the set of signal blocks that actually needs to be transmitted.
- CCA is not performed between two adjacent signal blocks in the set of transmitted signal blocks.
- the CCA is performed again on the channel of the unlicensed spectrum.
- the direction of the CCA is the same as the beam direction of any one of the signal block sets.
- the direction of the CCA is different from the beam direction of each of the signal block sets.
- two adjacent signal blocks spaced less than the execution time of the CCA in the time domain are divided into the same set of signal blocks.
- the time domain partitioning interval is any one of the following: one subframe, half subframe, one slot, two or more slots.
- FIG. 9 is a schematic structural diagram of an access network device 10 according to an embodiment of the present application.
- the access network device 10 may include: a processor 101, a receiver 102, a transmitter 103, a memory 104, and a bus. 105.
- the processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.
- the receiver 102 and the transmitter 103 can be implemented as a communication component, which can be a communication chip.
- the memory 104 is coupled to the processor 101 via a bus 105.
- the memory 104 can be used to store at least one instruction, and the processor 101 is configured to execute the at least one instruction to implement the steps performed by the access network device 10 in the above method embodiment.
- memory 104 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, including, but not limited to, a magnetic or optical disk, electrically erasable and programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Anytime Access Memory (SRAM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Programmable Read Only Memory (PROM) .
- EEPROM electrically erasable and programmable Read Only Memory
- EPROM Erasable Programmable Read Only Memory
- SRAM Static Anytime Access Memory
- ROM Read Only Memory
- Magnetic Memory Magnetic Memory
- Flash Memory Programmable Read Only Memory
- the embodiment of the present application further provides a computer readable storage medium, where the storage medium stores at least one instruction, and the at least one instruction is loaded and executed by a processor to implement sending on the unlicensed spectrum provided by the foregoing embodiment.
- the method of synchronizing signals is not limited to a computer readable storage medium, where the storage medium stores at least one instruction, and the at least one instruction is loaded and executed by a processor to implement sending on the unlicensed spectrum provided by the foregoing embodiment.
- the present application also provides a computer program product that, when executed on a computer, causes the computer to perform the method of transmitting a synchronization signal on an unlicensed spectrum provided by the above method embodiments.
- the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof.
- the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
- Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
- a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.
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Abstract
Description
Claims (30)
- 一种空闲信道侦听方法,其特征在于,所述方法包括:确定信号块集合,所述信号块集合包括n个信号块,每一个信号块包括至少一个信号和/或至少一个信道,所述n为大于1的整数;在发送所述信号块集合所包括的信号块之前,对免授权频谱的信道执行一次空闲信道评估CCA;若所述CCA的结果为所述免授权频谱的信道可用,则使用所述免授权频谱的信道发送所述信号块集合所包括的信号块。
- 根据权利要求1所述的方法,其特征在于,所述信号块为同步信号块SSB。
- 根据权利要求1所述的方法,其特征在于,每一个信号块包括:与一个SSB存在关联关系的至少一个信号和/或至少一个信道。
- 根据权利要求1所述的方法,其特征在于,每一个信号块包括:一个SSB,以及与所述一个SSB存在关联关系的至少一个信号和/或至少一个信道。
- 根据权利要求3或4所述的方法,其特征在于,所述至少一个信号包括以下信号中的至少一个:信道状态信息参考信号CSI-RS、相位跟踪参考信号PTRS、解调参考信号DMRS。
- 根据权利要求3或4所述的方法,其特征在于,所述至少一个信道包括以下信道中的至少一个:承载剩余最小的系统信息RMSI的信道、RMSI关联的物理下行控制信道PDCCH、承载寻呼信息的信道、寻呼信息关联的PDCCH、承载其它系统信息OSI的信道、OSI关联的PDCCH。
- 根据权利要求1至6任一项所述的方法,其特征在于,在发送所述信号块集合中第1个实际需要发送的信号块之前,执行所述一次CCA。
- 根据权利要求1至7任一项所述的方法,其特征在于,在发送所述信号 块集合中两个相邻信号块之间,不执行CCA。
- 根据权利要求1至8任一项所述的方法,其特征在于,在使用所述免授权频谱的信道发送另一个信号块集合所包括的信号块之前,对所述免授权频谱的信道再执行一次CCA。
- 根据权利要求1至9任一项所述的方法,其特征在于,所述CCA的方向与所述信号块集合中的任意一个信号块的波束方向相同。
- 根据权利要求1至9任一项所述的方法,其特征在于,所述CCA的方向与所述信号块集合中的每一个信号块的波束方向均不相同。
- 根据权利要求1至11任一项所述的方法,其特征在于,在时域上间隔小于所述CCA的执行时长的两个相邻信号块,被划分至同一个信号块集合。
- 根据权利要求1至12任一项所述的方法,其特征在于,在时域上属于同一时域划分区间的至少两个信号块,被划分至同一个信号块集合。
- 根据权利要求13所述的方法,其特征在于,所述时域划分区间为以下任意一种:一个子帧、半个子帧、一个时隙、两个或者两个以上时隙。
- 一种空闲信道侦听装置,其特征在于,所述装置包括:集合确定模块,用于确定信号块集合,所述信号块集合包括n个信号块,每一个信号块包括至少一个信号和/或至少一个信道,所述n为大于1的整数;信道侦听模块,用于在发送所述信号块集合所包括的信号块之前,对免授权频谱的信道执行一次空闲信道评估CCA;信号发送模块,用于当所述CCA的结果为所述免授权频谱的信道可用时,使用所述免授权频谱的信道发送所述信号块集合所包括的信号块。
- 根据权利要求15所述的装置,其特征在于,所述信号块为同步信号块SSB。
- 根据权利要求15所述的装置,其特征在于,每一个信号块包括:与一个SSB存在关联关系的至少一个信号和/或至少一个信道。
- 根据权利要求15所述的装置,其特征在于,每一个信号块包括:一个SSB,以及与所述一个SSB存在关联关系的至少一个信号和/或至少一个信道。
- 根据权利要求17或18所述的装置,其特征在于,所述至少一个信号包括以下信号中的至少一个:信道状态信息参考信号CSI-RS、相位跟踪参考信号PTRS、解调参考信号DMRS。
- 根据权利要求17或18所述的装置,其特征在于,所述至少一个信道包括以下信道中的至少一个:承载剩余最小的系统信息RMSI的信道、RMSI关联的物理下行控制信道PDCCH、承载寻呼信息的信道、寻呼信息关联的PDCCH、承载其它系统信息OSI的信道、OSI关联的PDCCH。
- 根据权利要求15至20任一项所述的装置,其特征在于,在发送所述信号块集合中第1个实际需要发送的信号块之前,执行所述一次CCA。
- 根据权利要求15至21任一项所述的装置,其特征在于,在发送所述信号块集合中两个相邻信号块之间,不执行CCA。
- 根据权利要求15至22任一项所述的装置,其特征在于,在使用所述免授权频谱的信道发送另一个信号块集合所包括的信号块之前,对所述免授权频谱的信道再执行一次CCA。
- 根据权利要求15至23任一项所述的装置,其特征在于,所述CCA的方向与所述信号块集合中的任意一个信号块的波束方向相同。
- 根据权利要求15至23任一项所述的装置,其特征在于,所述CCA的方向与所述信号块集合中的每一个信号块的波束方向均不相同。
- 根据权利要求15至25任一项所述的装置,其特征在于,在时域上间隔小于所述CCA的执行时长的两个相邻信号块,被划分至同一个信号块集合。
- 根据权利要求15至26任一项所述的装置,其特征在于,在时域上属于同一时域划分区间的至少两个信号块,被划分至同一个信号块集合。
- 根据权利要求27所述的装置,其特征在于,所述时域划分区间为以下任意一种:一个子帧、半个子帧、一个时隙、两个或者两个以上时隙。
- 一种接入网设备,其特征在于,所述接入网设备包括处理器和存储器,所述存储器存储有至少一条指令,所述至少一条指令用于被所述处理器执行以实现上述权利要求1至14中任一所述的方法。
- 一种计算机可读存储介质,其特征在于,所述存储介质存储有至少一条指令,所述至少一条指令用于被处理器执行以实现上述权利要求1至14中任一所述的方法。
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CN201880092137.0A CN111937455A (zh) | 2018-04-03 | 2018-04-03 | 空闲信道侦听方法、装置及设备 |
JP2020553573A JP2021521669A (ja) | 2018-04-03 | 2018-04-03 | クリアチャネルのリスニング方法、装置及び機器 |
EP18913379.6A EP3780796B1 (en) | 2018-04-03 | 2018-04-03 | Clear channel listening method and apparatus, and device |
AU2018417379A AU2018417379A1 (en) | 2018-04-03 | 2018-04-03 | Clear channel listening method and apparatus, and device |
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