WO2017167024A1 - 无线通信系统中的电子设备和无线通信方法 - Google Patents

无线通信系统中的电子设备和无线通信方法 Download PDF

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Publication number
WO2017167024A1
WO2017167024A1 PCT/CN2017/076930 CN2017076930W WO2017167024A1 WO 2017167024 A1 WO2017167024 A1 WO 2017167024A1 CN 2017076930 W CN2017076930 W CN 2017076930W WO 2017167024 A1 WO2017167024 A1 WO 2017167024A1
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WIPO (PCT)
Prior art keywords
uplink
channel
scheduling grant
electronic device
wireless communication
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PCT/CN2017/076930
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English (en)
French (fr)
Inventor
胡秉珊
孙晨
Original Assignee
索尼公司
胡秉珊
孙晨
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 索尼公司, 胡秉珊, 孙晨 filed Critical 索尼公司
Priority to EP21156293.9A priority Critical patent/EP3846351B1/en
Priority to CA3018259A priority patent/CA3018259C/en
Priority to KR1020187029348A priority patent/KR102434020B1/ko
Priority to EP23175780.8A priority patent/EP4236572A3/en
Priority to AU2017242739A priority patent/AU2017242739B2/en
Priority to CN201780005044.5A priority patent/CN108432152B/zh
Priority to EP17773054.6A priority patent/EP3439192B1/en
Priority to JP2018544343A priority patent/JP7138048B2/ja
Priority to US16/089,009 priority patent/US10708911B2/en
Publication of WO2017167024A1 publication Critical patent/WO2017167024A1/zh
Priority to US16/866,548 priority patent/US11382097B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/02—Hybrid access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas

Definitions

  • the present disclosure relates to the technical field of wireless communications, and in particular to electronic devices in wireless communication systems and methods for wireless communication in wireless communication systems.
  • LAA Licensed Assisted Access
  • SF SubFrame
  • bearer carrying UL grant uplink scheduling grant signaling in a traditional TDD (Time Division Duplexing) and FDD (Frequency Division Duplexing) wireless communication scheme
  • PUSCH Physical Uplink Shared Channel
  • the mapping relationship between the SFs transmitted by the PUSCH (Physical Uplink Shared Channel) scheduled by the UL grant is determined and known.
  • the UE User Equipment
  • the mapping relationship between the UL grant and the corresponding scheduled PUSCH transmission needs to be further discussed.
  • the UE when the UE performs uplink transmission on the unlicensed channel, it needs to first perform a channel detection process to detect whether the channel is idle. However, when to use what type of channel detection process and whether the channel detection parameter needs to be used in different uplink transmission periods Adjustments are issues that need to be resolved in the transmission of unlicensed channels.
  • an electronic device in a wireless communication system including one or more processing circuits configured to perform an operation of acquiring from the wireless communication system Downlink signaling of the base station; and extracting a downlink subframe carrying the uplink scheduling grant signaling from the downlink signaling and carrying the physical uplink shared channel on the unlicensed channel scheduled by the uplink scheduling grant signaling Time mapping information between uplink subframes of uplink transmission of PUSCH transmission.
  • a wireless communication system including a base station and a user equipment, wherein the base station includes: a first transceiver; and one or more first processing circuits, The first processing circuit is configured to: configure a downlink subframe that carries the uplink scheduling grant signaling, and a physical uplink shared channel that is carried by the user equipment scheduled by the uplink scheduling grant signaling on the unlicensed channel Time mapping information between uplink subframes of the uplink transmission of the PUSCH transmission; and causing the first transceiver to notify the user equipment of the time mapping information, and the user equipment comprises: a second transceiver; One or more second processing circuits, the second processing circuit configured to: obtain downlink signaling from the base station by the second transceiver; and extract the from the downlink signaling Time mapping information.
  • a method for wireless communication in a wireless communication system comprising: configuring a downlink subframe carrying an uplink scheduling grant signaling and carrying a signaling by the uplink scheduling grant Time-mapped information between uplink subframes of uplink transmission including physical uplink shared channel PUSCH transmission performed by user equipment in the wireless communication system in the scheduled wireless communication system; and notifying the time mapping information to the User equipment.
  • a method for wireless communication in a wireless communication system comprising: obtaining downlink signaling from a base station in the wireless communication system; and from the downlink The time between the downlink subframe carrying the uplink scheduling grant signaling and the uplink subframe carrying the uplink transmission including the physical uplink shared channel PUSCH transmission performed on the unlicensed channel scheduled by the uplink scheduling grant signaling Map information.
  • the downlink subframe carrying the uplink scheduling grant signaling and the uplink subframe carrying the uplink transmission including the PUSCH transmission may be determined.
  • the time mapping relationship between them enables efficient use of unlicensed channels.
  • FIG. 2 is a schematic diagram illustrating a situation of a relationship between a UL grant and a UL transmission burst within the same MCOT;
  • FIG. 3 is a schematic diagram illustrating a situation of a relationship between a UL grant and a UL transmission burst across an MCOT;
  • FIG. 4 is a block diagram illustrating a structure of an electronic device in a wireless communication system according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram illustrating a UL grant design in accordance with a preferred embodiment of the present disclosure
  • FIG. 6 is a schematic diagram illustrating a UL grant design in accordance with another preferred embodiment of the present disclosure.
  • FIG. 7 is a block diagram illustrating a structure of an electronic device in a wireless communication system according to another embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram illustrating an implicit signaling design in accordance with an embodiment of the present disclosure.
  • FIG. 9 is a block diagram illustrating a structure of an electronic device in a wireless communication system according to another embodiment of the present disclosure.
  • FIG. 10 is a block diagram illustrating a structure of a generating unit included in the electronic device of FIG. 9;
  • FIG. 11 is a flowchart illustrating a channel detection type configuration when type A multi-carrier operation is used
  • FIG. 12 is a schematic diagram illustrating an example of a result of a channel detection type configuration when a type A multi-carrier operation is used;
  • FIG. 13 is a flowchart illustrating a channel detection type configuration when type B multi-carrier operation is used
  • FIG. 14 is a schematic diagram illustrating an example of a result of a channel detection type configuration when a type B multi-carrier operation is used;
  • FIG. 15 is a flowchart illustrating a design of channel detection type indication signaling according to an embodiment of the present disclosure
  • FIG. 16 is a schematic diagram illustrating a design of channel detection type indication signaling according to an embodiment of the present disclosure
  • FIG. 17 is a flowchart illustrating a design of channel detection type indication signaling according to another embodiment of the present disclosure.
  • FIG. 18 is a flowchart illustrating a design of channel detection type indication signaling according to another embodiment of the present disclosure.
  • FIG. 19 is a block diagram illustrating a structure of an electronic device in a wireless communication system according to another embodiment of the present disclosure.
  • 20 is a schematic diagram illustrating channel detection parameter design in accordance with an embodiment of the present disclosure
  • 21 is a block diagram illustrating a structure of an electronic device in a wireless communication system according to another embodiment of the present disclosure.
  • FIG. 24 is a block diagram showing a first example of a schematic configuration of an eNB (evolution Node Base Station) applicable to the present disclosure
  • 25 is a block diagram showing a second example of a schematic configuration of an eNB suitable for the present disclosure.
  • 26 is a block diagram showing an example of a schematic configuration of a smartphone suitable for the present disclosure.
  • FIG. 27 is a block diagram showing an example of a schematic configuration of a car navigation device applicable to the present disclosure.
  • Example embodiments are provided so that this disclosure will be thorough, and the scope will be fully conveyed by those skilled in the art. Numerous specific details, such as specific components, devices, and methods, are set forth to provide a thorough understanding of the embodiments of the present disclosure. It will be apparent to those skilled in the art that ⁇ RTIgt; ⁇ / RTI> ⁇ RTIgt; ⁇ / RTI> ⁇ RTIgt; ⁇ / RTI> ⁇ RTIgt; In some example embodiments, well-known processes, well-known structures, and well-known techniques are not described in detail.
  • a UE User Equipment
  • a terminal having a wireless communication function such as a mobile terminal, a computer, an in-vehicle device, or the like.
  • the UE involved in the present disclosure may also be the UE itself or a component thereof such as a chip.
  • the base station involved in the present disclosure may be, for example, an eNB (evolution Node Base Station) or a component such as a chip in an eNB.
  • the channel detection process is for detecting whether the channel is idle, and may be an LBT (Listen Before Transmit, listen to the post) process.
  • LBT Listen Before Transmit, listen to the post
  • a multi-carrier channel detection process in accordance with the present disclosure is illustrated with the LBT process as an example. It is worth noting that in the present disclosure, the channel detection process is not limited to the LBT process, but includes other types of channel detection processes. These other types of channel detection processes are similar when implementing electronic devices and methods in accordance with the present disclosure.
  • ECLA Enhanced Licensed Assisted Access
  • RB Resource Block
  • PUSCH Physical Uplink Shared Channel
  • the following options may be considered:
  • N PUSCH transmissions for the UE in N (N > 1) subframes may be scheduled for a single UL grant in one subframe of the UE, where each subframe is for a single PUSCH.
  • N subframes may be continuous or discontinuous.
  • a single UL grant in a subframe for a UE may schedule a single PUSCH transmission in a single subframe, whereas a UE may receive multiple UL grants in one subframe for PUSCH transmission in different subframes.
  • a single UL grant in a subframe for the UE may enable the UE to perform a single PUSCH transmission among one of the plurality of subframes.
  • the public semi-persistent authorization can provide advanced information such as RB (Resource Block) allocation, MCS (Modulation and Coding Scheme), and the like.
  • a PUSCH transmission may be scheduled for a second grant in a subframe of the UE, which follows the options 1) and 2) mentioned above for certain UL subframes.
  • the UL grant(s) for the UE in the subframe may enable PUSCH transmission for the UE in multiple subframes in the SCell of the LAA, which is for cross-carrier scheduling Both the situation and the self-scheduling situation are true.
  • FIG. 1 shows a scenario of PUSCH transmission on an unlicensed band taking self-carrier scheduling as an example.
  • the dotted line around the eNB indicates the coverage sensed by the eNB
  • the solid line around the eNB indicates the coverage of the cell.
  • the eNB needs to perform channel sensing for the self-carrier scheduling to send the uplink scheduling grant to the user equipment on the unlicensed frequency band.
  • Each user equipment UE1 to UE5 in the cell can perform PUSCH transmission through the unlicensed frequency band under the scheduling of the uplink scheduling grant.
  • the user equipment can perform PUSCH transmission via the unlicensed frequency band under the scheduling of the uplink scheduling grant.
  • each transmission burst is a continuous transmission from the UE/eNB, wherein there is no previous or subsequent transmission from the same UE/eNB on the same CC (Component Carrier).
  • the eNB performs a complex channel detection process (Cat-4: an energy detection process including a random backoff and a variable contention window size) to access an unlicensed band.
  • Cat-4 an energy detection process including a random backoff and a variable contention window size
  • the eNB transmits the UL grant(s) in the SF (SubFrame) numbered 0.
  • SF0 to SF3 are used for DL (DownLink, downlink) transmission bursts, and SF4 to SF9 are used for UL transmission bursts.
  • the UE needs to perform a channel detection process before performing UL transmission.
  • the SF carrying the UL grant and the UL transmission including the PUSCH transmission are in the same MCOT. Therefore, it can be considered that the sum of the DL transmission burst and the total UL transmission burst is less than or equal to the MCOT.
  • FIG. 3 illustrates a situation in which the eNB exceeds the relationship between the UL grant and the UL transmission burst outside the same MCOT of the eNB in the case where the unlicensed band channel detection is idle.
  • the eNB performs a complex channel detection process (such as an energy detection process including random backoff and variable contention window size) to access an unlicensed band.
  • a complex channel detection process such as an energy detection process including random backoff and variable contention window size
  • the eNB transmits the UL grant(s) in the SF numbered 0.
  • SF0 to SF3 are used for DL transmission bursts
  • SF4 to SF15 are used for UL transmission. Lose the burst.
  • the UE needs to perform a channel detection process before performing UL transmission.
  • the first MCOT (MCOT #1) includes a DL transmission burst and a partial UL transmission burst
  • the second MCOT (MCOT #2) includes only UL transmission bursts.
  • the SF(s) carrying the UL grant and PUSCH transmissions are outside the same MCOT of the eNB. That is, the sum of the DL transmission burst and all UL transmission bursts is greater than MCOT #1.
  • the time mapping can be flexibly performed between the SF carrying the UL grant and the SF(s) corresponding to the PUSCH transmission(s).
  • one UL grant may schedule multiple PUSCH transmissions, where each PUSCH transmission is carried by one SF and different PUSCH transmissions are carried by different SFs.
  • the time mapping relationship between the SF carrying the UL grant and the multiple SFs carrying the multiple PUSCH transmissions can be flexibly configured, and the configured time mapping relationship can be included in the time mapping information.
  • a UL grant can also schedule only one PUSCH transmission.
  • the time mapping relationship between the SF carrying the UL grant and the SF carrying the PUSCH transmission can also be flexibly configured, and the configured time mapping relationship can also be included in the time mapping information.
  • the UE can perform a simple channel detection process (cat-2: if no random backoff energy is included) Detection process). If the channel is detected to be idle, the UE may perform PUSCH transmission. However, if the PUSCH transmission of the UE on the unlicensed channel falls outside the MCOT of the eNB (as shown in FIG. 3), the UE (for example, before SF10) performs a complex channel detection process (cat-4: if random backing is included) And the energy detection process with variable size of the competition window).
  • a simple channel detection process cat-2: if no random backoff energy is included
  • Detection process If the channel is detected to be idle, the UE may perform PUSCH transmission. However, if the PUSCH transmission of the UE on the unlicensed channel falls outside the MCOT of the eNB (as shown in FIG. 3), the UE (for example, before SF10) performs a complex channel detection process (cat-4: if random backing is included) And the energy detection process with variable
  • the UE may need to perform CWS (Contention Window Size) adjustment to generate a complex channel detection process based on the adjusted CWS.
  • CWS Contention Window Size
  • FIG. 4 illustrates a structure of an electronic device 400 in a wireless communication system according to an embodiment of the present disclosure.
  • electronic device 400 can include processing circuitry 410. It should be noted that the electronic device 400 may include one processing circuit 410 or multiple processing circuits 410. In addition, the electronic device 400 may further include a communication unit 420 or the like as a transceiver.
  • processing circuit 410 can include various discrete functional units to perform various different functions and/or operations. It should be noted that these functional units may be physical entities or logical entities, and differently named units may be implemented by the same physical entity.
  • processing circuit 410 can include a configuration unit 411. Additionally, processing circuit 410 may also include an adding unit 412.
  • the configuration unit 411 may configure a time mapping between a downlink subframe that carries the uplink scheduling grant signaling and an uplink subframe that carries the uplink transmission of the PUSCH transmission performed by the UE scheduled by the uplink scheduling grant signaling on the unlicensed channel.
  • the uplink scheduling grant signaling may be the UL grant signaling mentioned above.
  • a time mapping relationship between a downlink subframe carrying an uplink scheduling grant signaling and an uplink subframe carrying an uplink transmission including a PUSCH transmission may be determined, thereby implementing an unlicensed channel. Effective use.
  • the adding unit 412 may add time mapping information to physical layer signaling or MAC (Media Access Control) layer signaling to notify the UE.
  • MAC Media Access Control
  • L1 signaling indicates clear time mapping information between SFs carrying one UL grant and its corresponding PUSCH transmission.
  • a single UL grant may include scheduling information that is valid for multiple SFs. This explicit signaling can be generated on a per carrier basis.
  • FIG. 5 illustrates a schematic diagram of a UL grant design in accordance with a preferred embodiment of the present disclosure.
  • the eNB performs a complex channel detection process (such as an energy detection process including random backoff and variable contention window size) to access an unlicensed frequency band.
  • the eNB has an MCOT on the unlicensed frequency band.
  • the eNB sends a UL grant in the SF numbered 0.
  • SF0 to SF3 are used for DL transmission bursts
  • SF4 to SF15 are used for UL transmission bursts.
  • the UE needs to perform channel detection before performing UL transmission. process.
  • the first MCOT (MCOT #1) includes a DL transmission burst and a partial UL transmission burst
  • the second MCOT (MCOT #2) includes only UL transmission bursts.
  • the UE receives a UL grant in SF0, and this UL grant includes information indicating that this UL grant is valid for SF4, SF5, SF6, and SF10. If the PUSCH can be transmitted after undergoing the LBT procedure, and the UE needs to perform PUSCH transmission, the UE will perform PUSCH transmission in SF4, SF5, SF6, and SF10.
  • the adding unit 412 may, for example, reuse 10 padding bits in the UL grant, each bit indicating whether to schedule a specific UE in the upcoming SF.
  • Bit0 indicates that the UE is scheduled
  • Bit1 indicates that the UE is not scheduled. If the UE receives a UL grant in subframe N, then Bit0 indicates whether this UE is scheduled in subframe N+4, Bit1 indicates whether this UE is scheduled in subframe N+5, and so on, and Bit9 Indicates whether this UE is scheduled in subframe N+13.
  • the position of the subframe is flexible and tunable, enabling efficient use of the unlicensed channel.
  • one downlink subframe may carry multiple uplink scheduling grant signaling.
  • the configuration unit 411 may configure a downlink subframe carrying each of the plurality of uplink scheduling grant signalings and an uplink transmission including the PUSCH transmission scheduled by each of the plurality of uplink scheduling grant signalings.
  • Each time mapping information between one uplink subframe After this, the adding unit 412 can add each time mapping information to each of the plurality of uplink scheduling grant signalings to notify the UE.
  • L1 signaling indicates clear time mapping information between a plurality of UL grants and their respective SFs including uplink transmissions of PUSCH transmissions.
  • the UE may receive multiple UL grants, and each UL grant is used by one SF (for PUSCH transmission). This explicit signaling can be generated on a per carrier basis.
  • the first MCOT (MCOT#1) includes a DL transmission burst and a partial UL transmission burst
  • the second MCOT (MCOT#2) includes only the UL transmission burst. hair.
  • the UE will receive multiple (4) UL grants in SF0. Clear mapping information is added to each UL grant. For example, UL grant 1 is valid for SF4, UL grant 2 is valid for SF5, UL grant 3 is valid for SF6, UL grant 4 is valid for SF10, and so on.
  • the UE will perform PUSCH transmission in SF4, SF5, SF6, and SF10.
  • the format design for a plurality of UL grants can be, for example, as follows.
  • a conventional UL grant it can be decoded N times to obtain UL grant 1, UL grant 2, ..., UL grant N.
  • the UL grant 1+UL grant 2+,...,+UL grant N can be obtained once.
  • one downlink subframe that carries multiple UL grants such as UL grant 1, UL grant 2, UL grant 3, and UL grant 4, such as SF0 and multiple uplink subframes that carry PUSCH transmission, such as SF4, SF5, may be determined.
  • the time mapping relationship between SF6 and SF10 enables efficient use of unlicensed channels.
  • FIG. 7 illustrates a structure of an electronic device 700 in a wireless communication system according to another embodiment of the present disclosure.
  • electronic device 700 can include processing circuitry 710. It should be noted that the electronic device 700 may include one processing circuit 710 or multiple processing circuits 710. In addition, the electronic device 700 may further include a communication unit 720 or the like as a transceiver.
  • processing circuit 710 can include various discrete functional units to perform various different functions and/or operations. It should be noted that these functional units may be physical entities or logical entities, and differently named units may be implemented by the same physical entity.
  • the processing circuit 710 may include a setting unit 711 and a configuration unit. 712 and adding unit 713.
  • the setting unit 711 can set an uplink scheduling grant signaling to be able to schedule PUSCH transmission carried by all uplink subframes before the next downlink subframe that carries the next uplink scheduling grant signaling.
  • the configuration unit 712 can configure the actual time mapping information between the downlink subframe that carries one uplink scheduling grant signaling and the uplink subframe that actually carries the uplink transmission of the PUSCH transmission scheduled by one uplink scheduling grant signaling.
  • the adding unit 713 may add the actual time mapping information to the physical layer signaling or the MAC layer signaling to notify the UE.
  • the UE in one SF, can receive a single UL grant, but this UL grant is valid for all upcoming uplink SFs until the UE receives the next new UL. Grant so far.
  • This implicit signaling can be generated on a per carrier basis.
  • the UE may also receive (via L1 or MAC signaling) explicit mapping information indicating whether to schedule in the upcoming multiple uplink SFs.
  • FIG. 8 shows a schematic diagram of an implicit signaling design in accordance with an embodiment of the present disclosure.
  • the eNB performs a complex channel detection process (such as an energy detection process including random backoff and variable contention window size) to access an unlicensed band.
  • a complex channel detection process such as an energy detection process including random backoff and variable contention window size
  • the UE receives a UL grant 1 in the SF numbered 0.
  • SF0 to SF3 are used for DL transmission bursts
  • SF4 to SF11 are used for UL transmission bursts.
  • UL grant 1 is valid for all of SF4 to SF11.
  • UL grant 2 is valid for all of SF16 to SF18 until the UE receives the next UL grant.
  • the UE may receive scheduling information indicating whether scheduling is to be performed in the upcoming SF.
  • Bit0 indicates that no UE is scheduled
  • Bit1 indicates that the UE is scheduled. If the UE receives a UL grant in subframe N, then Bit0 indicates whether this UE is scheduled in subframe N+4, Bit1 indicates whether this UE is scheduled in subframe N+5, and so on, and Bit9 Indicates whether this UE is scheduled in subframe N+13.
  • Table 1 shows that the UE will be scheduled in SF4, SF5, SF6 and SF10.
  • FIG. 9 illustrates a structure of an electronic device 900 in a wireless communication system according to an embodiment of the present disclosure.
  • electronic device 900 can include processing circuitry 910. It should be noted that the electronic device 900 may include one processing circuit 910 or multiple processing circuits 910. In addition, the electronic device 900 may further include a communication unit 920 or the like as a transceiver.
  • processing circuit 910 can include various discrete functional units to perform various different functions and/or operations. It should be noted that these functional units can be physical entities or logic Entities, and units of different titles may be implemented by the same physical entity.
  • the processing circuit 910 may include a generating unit 911 and an adding unit 912.
  • the generating unit 911 may generate configuration information of a channel detecting type that performs a channel detecting process before the UE performs uplink transmission including PUSCH transmission on the unlicensed channel.
  • the adding unit 912 may add the configuration information generated by the generating unit 911 to the physical layer signaling to notify the UE.
  • the electronic device 900 uses the electronic device 900 according to an embodiment of the present disclosure to determine a channel detection type in which the UE performs a channel detection process before performing uplink transmission including PUSCH transmission on an unlicensed channel, thereby realizing efficient utilization of the unlicensed channel.
  • FIG. 10 illustrates an example of the structure of the generating unit 911 included in the electronic device 900 of FIG.
  • the generating unit 911 may include a setting unit 9111 and configuration units 9112 and 9113.
  • the setting unit 9111 may set a plurality of unlicensed carriers on the unlicensed channel to be independent of each other.
  • the configuration unit 9112 can configure the channel detection type as the first channel detection procedure (Cat-2).
  • the configuration unit 9113 can configure the channel detection type as the second channel detection process (Cat-4) .
  • channel detection may include feature detection and energy detection.
  • channel detection is feature detection, it includes preamble detection and PLMN (Public Land Mobile Network) + PSS (primary synchronization signal) / SSS (secondary synchronization signal) Synchronization signal) detection.
  • PLMN Public Land Mobile Network
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • the channel detection process may include: (a) energy detection that does not include random backoff; (b) energy detection including random backoff but CWS fixed; and (c) random backoff and contention window Variable size energy detection.
  • the energy detection indicates that data transmission is performed directly after being idle.
  • the channel detection process is divided into two phases, wherein the first phase includes an initial detection period and a random backoff period, and the second phase includes self-deferral (self-deferral). ) Time period (optional). At the end of the initial inspection period After entering the random backoff period, in the random backoff period, energy detection is still performed, in which the backoff is performed by setting a random backoff counter (also referred to simply as a counter).
  • a random backoff counter also referred to simply as a counter
  • the count of the random backoff counter is interrupted, wherein the random backoff counter is set based on the CWS, and the channel detection enters the defer phase to further sense whether the channel is idle, and if the channel is idle, the random backoff counter continues to count down. Until the end of the count.
  • the self-delay period is entered to wait for the time slot in which the data transmission is to be performed. Energy detection is still being performed during the self-delay period, and when it is detected that the channel is occupied, the channel cannot be used to perform data transmission.
  • energy detection is performed at two stages of the channel detection process, namely, an initial detection period, a random back-off period, and a self-delay period.
  • the main difference between categories (b) and (c) is that in category (b), CWS is fixed, while in category (c), CWS is variable.
  • the energy detection has a detection period, taking categories (b) and (c) as an example, the detection period includes an initial detection period, a random back-off period, and a self-delay phase. When the detection period has elapsed, it is called energy detection or channel detection is completed.
  • the channel detection process of category (a) does not include random backoff, and only includes an energy detection process for a period of time. For example, during the energy detection process, if an unlicensed carrier is sensed to be idle, data can be transmitted on the unlicensed carrier.
  • the maintenance time of the sensing process may be selected according to requirements, for example, may be greater than 25 ⁇ s.
  • the unlicensed carrier can be determined to be free according to any existing or known method.
  • the energy detection is performed by saying that if the energy detected on the unlicensed carrier during the energy detection process is less than the threshold of the energy detection, the unlicensed carrier is in an idle state.
  • the eNB may select different channel detection processes from the above several channel detection processes according to actual requirements and transmitted content.
  • the eNB may select the first channel detection process and the second channel detection process to make the first channel detection process simpler than the second channel detection process.
  • the first channel detection process may be energy detection that does not include random backoff, in other words, the first channel detection process is an energy detection process for a period of time, if an unlicensed carrier is sensed during the energy detection process If it is idle, data can be transmitted on the unlicensed carrier.
  • the second channel detection process may be energy detection including random backoff and CWS variable, in other words, the second channel detection process may include an initial detection period, a random backoff period, and a self-delay period, and the CWS is variable .
  • the first channel detection process may include only one energy detection process.
  • the second channel detection process can include multiple energy detection processes. As mentioned in the foregoing, the second channel detection process can be divided into two phases, in which the energy detection process is performed, in other words, the second channel detection process includes multiple energy detection processes.
  • the first channel detection process is a period of energy detection process during which data can be transmitted on the unlicensed carrier if it is sensed that the unlicensed carrier is idle. In other words, the first channel detection process includes only one energy detection process.
  • the first channel detecting process is simpler than the second channel detecting process, and thus power consumption is also small. If the electronic device performs only the first channel detection process on the unlicensed carrier, the power consumption of the electronic device can be greatly reduced.
  • the eNB may determine and indicate a channel detection type when the UE performs a channel detection process (such as an LBT procedure) before performing UL transmission on multiple carriers above the unlicensed frequency band. For example, the eNB may perform re-use of DCI (Downlink Control Information) format 1C to indicate a channel detection type, which will be described in detail later.
  • a channel detection process such as an LBT procedure
  • DCI Downlink Control Information
  • Type A multi-carrier operation refers to performing sensing processes independently on each configured carrier (ie, multiple unlicensed carriers on an unlicensed channel are set to be independent of each other), and generally using the above-mentioned The second channel detection process.
  • Type B multi-carrier operation means that one of a plurality of unlicensed carriers on the unlicensed channel is set as the primary channel, and the other unlicensed carriers are set as the secondary channel.
  • the primary channel typically uses the second channel detection procedure mentioned above, while the secondary channel typically uses the first channel detection procedure mentioned above.
  • the UE In the case where the eNB selects type A multi-carrier operation, if the PUSCH transmission of the UE falls outside the MCOT of the eNB, the UE should use the second channel detection procedure to ensure the validity of the channel detection process. On the other hand, if the PUSCH transmission of the UE falls within the MCOT of the eNB, the UE can use the first channel detection process to reduce the power consumption of the electronic device.
  • the eNB can configure the type of channel detection procedure that the UE should perform on each configured carrier.
  • FIG. 11 illustrates a flow chart of a channel detection type configuration when type A multi-carrier operation is used in the case of self-carrier scheduling.
  • step S110 the eNB selects UL type A multi-carrier sensing.
  • step S120 the eNB determines whether the PUSCH transmission of the UE will fall within the MCOT of the eNB.
  • step S140 the UE will perform a first channel detection procedure.
  • step S130 the UE will perform a second channel detection procedure.
  • step S150 the eNB notifies the UE of the result of the channel detection type configuration to configure the UE.
  • FIG. 12 illustrates an example of a result of a channel detection type configuration when type A multi-carrier operation is used.
  • carrier C1 is a Pcell (primary serving cell), and carriers C2 to C5 are Scells (a serving cell).
  • the eNB performs LBT 2 (second channel detection procedure). In the case where channel detection is successful, the UE needs to perform a channel detection process before performing UL transmission.
  • the UE can perform LBT 1 (first channel detection procedure). In addition to the MCOT of the eNB, the UE performs LBT 2 (second channel detection procedure). On the other carriers C3, C4 and C5, the UE independently performs LBT 2 (second channel detection process).
  • the setting unit 9111 may set one of a plurality of unlicensed carriers on the unlicensed channel as a primary channel and set other unlicensed carriers as a secondary channel.
  • the eNB selects type B multi-carrier operation in this embodiment.
  • the configuration unit 9112 can configure the channel detection type for the secondary channel as the first channel detection process.
  • the configuration unit 9112 can configure the channel detection type as the first channel detection procedure.
  • the configuration unit 9113 can configure the channel detection type as the second channel detection procedure.
  • an eNB selects type B multi-carrier operation
  • a PUSCH transmission of a UE occurs on a primary channel
  • the UE should use the One channel detection process to reduce The power consumption of the electronic device; and if the PUSCH transmission of the UE falls outside the MCOT of the eNB, the UE should use the second channel detection procedure to ensure the validity of the channel detection process.
  • the UE uses only the first channel detection procedure.
  • the eNB can configure the type of channel detection procedure that the UE should perform on each configured carrier.
  • FIG. 13 illustrates a flow chart of a channel detection type configuration when type B multi-carrier operation is used.
  • step S210 the eNB selects UL type B multi-carrier sensing.
  • step S220 the eNB determines whether the PUSCH transmission of the UE occurs on the primary channel.
  • step S230 the UE will perform a first channel detection procedure.
  • step S240 the eNB determines whether the PUSCH transmission of the UE falls within the MCOT of the eNB.
  • step S260 the UE will perform a first channel detection procedure.
  • step S250 the UE will perform a second channel detection procedure.
  • step S270 the eNB notifies the UE of the result of the channel detection type configuration to configure the UE.
  • FIG. 14 illustrates an example of a result of a channel detection type configuration when type B multi-carrier operation is used.
  • carrier C1 is a Pcell
  • carriers C2 to C5 are Scells.
  • carrier C2 is the primary channel
  • carriers C3 to C5 are secondary channels.
  • the UE can perform LBT 1 (first channel detection procedure).
  • LBT 2 second channel detection procedure.
  • the UE always performs LBT 1 (first channel detection procedure).
  • the eNB can indicate the channel detection type by re-using the DCI format 1C.
  • the adding unit 912 as shown in FIG. 9 can reuse the DCI format 1C to add the generated configuration information to the physical layer signaling.
  • bit b0b1b2 is used for Pcell
  • bit b3b4b5 is used for Scell 1
  • bit b6b7b8 is used for Scell 2
  • bit b9b10b11 is used for Scell 3
  • bit b12b13b14 is used for Scell 4, and Includes padding bits and more.
  • the bits for Scell 1-4 can be reused. As an example, if the 3 bits for one of Scells 1-4 are "000", then the second channel detection process is instructed to be performed. On the other hand, if the 3 bits for one of the Scells 1-4 are "111", it is instructed to perform the first channel detecting process. In addition, it can also be specified that this is valid for a predetermined length of time (for example, 6 ms).
  • a "0" may be specified to indicate that the second channel detection process is performed, and a "1" is indicative of the first channel detection process.
  • this can also be specified that this is valid for a predetermined length of time (for example, 2 ms). For example, if the 3 bits for one of Scells 1-4 are "000”, it indicates that the second channel detection process is performed within 3 2ms. If the 3 bits used for one of Scells 1-4 are "110", it indicates that the first channel detection process is performed within the first and second 2ms, and the second is performed within the third 2ms. Channel detection process.
  • FIG. 15 illustrates a design flow chart of channel detection type indication signaling according to an embodiment of the present disclosure as described above.
  • the eNB transmits a UL grant for each configured carrier to the UE.
  • the eNB transmits a channel detection type indication for PUSCH transmission on each configured carrier corresponding to the UL grant to the UE.
  • configuration information about a channel detection type may be generated according to an embodiment of the present disclosure, and the generated configuration information is added to physical layer signaling to notify the UE.
  • the UE performs a channel detection procedure on multiple carriers.
  • the UE performs PUSCH transmission to the eNB on each configured carrier.
  • the generating unit 911 shown in FIG. 9 may generate subframe boundary information as configuration information.
  • the subframe boundary information may indicate the last subframe within the MCOT after the channel detection of the base station side in the wireless communication system succeeds.
  • Figure 16 illustrates A schematic diagram of the design of channel detection type indication signaling according to this embodiment.
  • the UE will receive the UL grant and will know that the UL grant is valid for SF4, SF6, SF9 and SF10.
  • the eNB may also inform the SF boundary information on each configured carrier.
  • FIG. 17 illustrates a design flow chart of channel detection type indication signaling according to the current embodiment.
  • the eNB transmits information about the multi-carrier sensing utilization type A to the UE.
  • the eNB may transmit SF boundary information on each configured carrier to the UE.
  • the UE can determine the channel detection type on each configured carrier.
  • the UE performs a channel detection procedure on multiple carriers.
  • the eNB may also inform the UE of the SF boundary information for use by the primary channel.
  • the eNB first transmits information about the multi-carrier sensing utilization type B to the UE.
  • the eNB transmits a UL grant for each configured carrier to the UE.
  • the UE can determine the channel detection type on each of the configured carriers.
  • the UE performs PUSCH transmission to the eNB on each configured carrier.
  • FIG. 19 illustrates a structure of an electronic device 800 in a wireless communication system according to an embodiment of the present disclosure.
  • processing circuit 810 can include various discrete functional units to perform various different functions and/or operations. It should be noted that these functional units may be physical entities or logical entities, and differently named units may be implemented by the same physical entity.
  • the processing circuit 810 may include a configuration unit 811 and an adding unit 812.
  • the configuration unit 811 can configure channel detection parameters for unlicensed carriers on the unlicensed channel.
  • Adding unit 812 can add the configured channel detection parameters to the physical layer signaling to notify the UE.
  • channel detection parameters configured for unlicensed carriers on an unlicensed channel can be determined, thereby enabling efficient utilization of the unlicensed channel.
  • the channel detection parameter may be a contention window size used in an energy detection process including random backoff and variable contention window size.
  • the configuration unit 811 may configure the UE for the unlicensed carrier to perform scheduling including PUSCH transmission by the same uplink scheduling grant signaling.
  • the configuration unit 811 may configure the UE to be carried by the same downlink subframe for the unlicensed carrier.
  • the channel detection parameter used when the channel detection process is performed before the uplink transmission including the PUSCH transmission is scheduled by the uplink scheduling grant signaling.
  • the eNB may perform CWS adjustment (ie, channel detection parameter configuration) based on a certain PUSCH transmission, and these PUSCH transmissions either share the same UL grant or use different UL grants transmitted in the same SF. If there is no PUSCH transmission mentioned earlier, the eNB can perform CWS adjustment based on all previous PUSCH transmissions.
  • FIG. 20 shows a schematic diagram of channel detection parameter design according to the current embodiment.
  • a CWS before SF12 may be adjusted based on PUSCH transmission in SF8 and SF11
  • a CWS before SF15 may be adjusted based on PUSCH transmission in SF8, SF11, and SF12
  • the CWS before SF16 can be adjusted based on PUSCH transmissions in SF8, SF11, SF12, and SF15.
  • the CWS can be adjusted based on the success rate of the PUSCH transmission. The greater the number of NACKs that are the response of the PUSCH transmission, the lower the success rate of the PUSCH transmission, and therefore the CWS needs to be increased. Conversely, if the number of NACKs is small, it indicates that the success rate of PUSCH transmission is higher, and thus the CWS can be adjusted down.
  • the wireless communication system as described above may be an LAA system, and the electronic devices 400, 700, 800, and 900 may be base stations in a wireless communication system.
  • FIG. 21 illustrates a structure of an electronic device 600 in a wireless communication system according to another embodiment of the present disclosure.
  • electronic device 600 can include processing circuitry 610. It should be noted that the electronic device 600 may include one processing circuit 610 or multiple processing circuits 610. In addition, the electronic device 600 may further include a communication unit 620 such as a transceiver.
  • a communication unit 620 such as a transceiver.
  • processing circuit 610 may also include various discrete functional units to perform various different functions and/or operations. These functional units may be physical entities or logical entities, and differently named units may be implemented by the same physical entity.
  • the processing circuit 610 may include an obtaining unit 611 and an extracting unit 612.
  • the obtaining unit 611 can acquire downlink signaling (e.g., physical layer signaling or MAC layer signaling) from a base station in the wireless communication system (e.g., via the communication unit 620).
  • downlink signaling e.g., physical layer signaling or MAC layer signaling
  • the extracting unit 612 may extract, from the downlink signaling acquired by the acquiring unit 611, a downlink subframe that carries the uplink scheduling grant signaling, and an uplink that carries the uplink transmission of the PUSCH transmission performed on the unlicensed channel, which is scheduled by the uplink scheduling grant signaling. Time mapping information between subframes.
  • the processing circuit 610 can acquire an uplink scheduling grant signaling. Further, the processing circuit 610 (for example, the extracting unit 612) may extract, from the uplink scheduling grant signaling, a downlink subframe carrying the uplink scheduling grant signaling and an uplink transmission including the PUSCH transmission scheduled by the uplink scheduling grant signaling. Time mapping information between multiple uplink subframes.
  • the processing circuit 610 may acquire multiple uplink scheduling grant signaling carried by the same downlink subframe. Further, the processing circuit 610 (eg, the extracting unit 612) may extract the same downlink subframe from each of the plurality of uplink scheduling grant signalings and carry the PUSCH transmission including the PUSCH transmission scheduled by each of the plurality of uplink scheduling grant signalings. Each time mapping information between one uplink subframe of the uplink transmission.
  • the processing circuit 610 may determine that one uplink scheduling grant signaling can be scheduled to be carried in all uplink subframes preceding the next downlink subframe carrying the next uplink scheduling grant signaling. PUSCH transmission. Further, the processing circuit 610 (for example, the extracting unit 612) may extract, from the physical layer signaling or the MAC layer signaling, the downlink subframe carrying the uplink scheduling grant signaling and the actual bearer including the PUSCH transmission scheduled by the uplink scheduling grant signaling. Actual time mapping letter between uplink subframes of uplink transmission Information as time map information.
  • processing circuitry 610 may also generate an instruction to perform an uplink transmission including PUSCH transmission on an unlicensed channel.
  • processing circuitry 610 may generate an instruction to perform a first channel detection procedure or a second channel detection procedure prior to performing an uplink transmission including PUSCH transmission on an unlicensed channel .
  • the first channel detection process may be an energy detection process that does not include random backoff
  • the second channel detection process may be an energy detection process that includes random backoff and variable contention window size.
  • processing circuit 610 may extract channel detection parameters from physical layer signaling. Further, based on the extracted channel detection parameters, processing circuitry 610 (eg, a configuration unit, which is not shown), can configure channel detection parameters for unlicensed carriers on the unlicensed channel. More preferably, the channel detection parameter may be a contention window size used in an energy detection process that includes random backoff and variable contention window size.
  • the wireless communication system as described above may be an LAA system
  • the electronic device 600 may be a UE in a wireless communication system.
  • a wireless communication system including a base station and a user equipment, wherein the base station includes: a first transceiver; and one or more first processes may be provided a circuit, the first processing circuit configured to: configure a downlink subframe carrying uplink scheduling grant signaling and a PUSCH carrying the user equipment scheduled by the uplink scheduling grant signaling on an unlicensed channel Time mapping information between the transmitted uplink subframes; and causing the first transceiver to notify the user equipment of the time mapping information, and the user equipment includes: a second transceiver; and one or more a second processing circuit, the second processing circuit configured to: obtain downlink signaling from the base station by the second transceiver; and extract the time from the downlink signaling Map information.
  • FIG. 22 shows a flow chart of a method of wireless communication in accordance with an embodiment of the present disclosure.
  • step S320 the time map information is notified to the user equipment.
  • one downlink subframe carrying one uplink scheduling grant signaling may be mapped to multiple uplink subframes carrying uplink transmissions including PUSCH transmission scheduled by the uplink scheduling grant signaling, and Time map information can be added to the uplink scheduling grant signaling.
  • an uplink scheduling grant signaling may be set to be capable of scheduling uplink transmissions including PUSCH transmissions carried by all uplink subframes before the next downlink subframe carrying the next uplink scheduling grant signaling.
  • the actual time mapping information between the downlink subframe that carries one uplink scheduling grant signaling and the uplink subframe that actually carries the uplink transmission of the PUSCH transmission scheduled by the uplink scheduling grant signaling may be configured. Further, the actual time mapping information may be added to the physical layer signaling or the MAC layer signaling to notify the user equipment.
  • a plurality of unlicensed carriers on the unlicensed channel may be set to be independent of each other.
  • the channel detection type when the uplink subframe carrying the uplink transmission including the PUSCH transmission falls within the MCOT, the channel detection type may be configured as the first channel detection procedure; and when the bearer includes the PUSCH transmission Uplink of uplink transmission When the frame falls outside the MCOT, the channel detection type can be configured as the second channel detection process.
  • the channel detection type for the secondary channel can be configured as the first channel detection process.
  • the channel detection type For the primary channel, when the uplink subframe carrying the uplink transmission including the PUSCH transmission falls within the MCOT, the channel detection type may be configured as the first channel detection procedure; and when the uplink subframe carrying the uplink transmission including the PUSCH transmission falls When outside the MCOT, the channel detection type can be configured as a second channel detection process.
  • the first channel detection process is an energy detection process that does not include random backoff
  • the second channel detection process is an energy detection process that includes random backoff and variable contention window size.
  • the subframe boundary information may be generated as configuration information indicating the last subframe within the MCOT after the channel detection of the base station end in the wireless communication system succeeds.
  • the method according to an embodiment of the present disclosure may configure channel detection parameters for unlicensed carriers on an unlicensed channel. Further, the configured channel detection parameters may be added to the physical layer signaling to notify the user equipment.
  • the unlicensed carrier configuration user equipment may be configured to perform uplink transmission including PUSCH transmission scheduled by the same uplink scheduling grant signaling.
  • the channel detection parameters used when performing the channel detection process may be configured to perform uplink transmission including PUSCH transmission scheduled by the same uplink scheduling grant signaling.
  • the user equipment may be configured to perform an uplink scheduling authorization message carried by the same downlink subframe for the unlicensed carrier based on the result of the uplink transmission including the PUSCH transmission scheduled by the uplink scheduling grant signaling carried by the same downlink subframe.
  • the channel detection parameters used in performing the channel detection process before the scheduled uplink transmission including the PUSCH transmission are scheduled.
  • step S410 downlink signaling (e.g., physical layer signaling or MAC layer signaling) from a base station in a wireless communication system is acquired.
  • downlink signaling e.g., physical layer signaling or MAC layer signaling
  • step S420 the bearer is extracted from the physical layer signaling or the MAC layer signaling.
  • an uplink scheduling grant signaling may be obtained.
  • a downlink subframe carrying the uplink scheduling grant signaling and a plurality of uplink subframes carrying the uplink transmission including the PUSCH transmission scheduled by the uplink scheduling grant signaling may be extracted from an uplink scheduling grant signaling. Time mapping information.
  • multiple uplink scheduling grant signaling carried by the same downlink subframe may be acquired. Further, the same downlink subframe may be extracted from each of the multiple uplink scheduling grant signalings and between one uplink subframe that carries the uplink transmission including the PUSCH transmission scheduled by each of the multiple uplink scheduling grant signalings. Map information for each time.
  • one uplink scheduling grant signaling can schedule uplink transmission including PUSCH transmission carried by all uplink subframes before the next downlink subframe that carries the next uplink scheduling grant signaling.
  • the downlink subframe carrying the uplink scheduling grant signaling may be extracted from the physical layer signaling or the MAC layer signaling, and the uplink subframe corresponding to the uplink transmission including the PUSCH transmission scheduled by the uplink scheduling grant signaling is actually carried.
  • the actual time map information is used as time map information.
  • an instruction to perform an uplink transmission including PUSCH transmission on the unlicensed channel may be generated.
  • the method according to an embodiment of the present disclosure may extract, from physical layer signaling, configuration information of a channel detection type that performs a channel detection process before performing uplink transmission including PUSCH transmission on an unlicensed channel. More preferably, the configuration information can be extracted from the reused DCI format 1C.
  • the subframe boundary information may be acquired as configuration information, and the subframe boundary information indicates the last subframe within the MCOT after the channel detection of the base station end in the wireless communication system succeeds.
  • an instruction to perform the first channel detection process or the second channel detection process before performing the uplink transmission including the PUSCH transmission on the unlicensed channel may be generated.
  • the first channel detection process is an energy detection process that does not include random backoff
  • the second channel detection process is an energy detection process that includes random backoff and variable contention window size.
  • the method according to an embodiment of the present disclosure may extract channel detection parameters from physical layer signaling. Further, based on the extracted channel detection parameters, it may be a non-authorized channel. The authorized carrier configures channel detection parameters.
  • the base stations mentioned in this disclosure may be implemented as any type of evolved Node B (eNB), such as a macro eNB and a small eNB.
  • the small eNB may be an eNB covering a cell smaller than the macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB.
  • the base station can be implemented as any other type of base station, such as a NodeB and a base transceiver station (BTS).
  • BTS base transceiver station
  • the base station can include: a body (also referred to as a base station device) configured to control wireless communication; and one or more remote wireless headends (RRHs) disposed at a different location than the body.
  • a body also referred to as a base station device
  • RRHs remote wireless headends
  • various types of terminals which will be described below, can operate as a base station by performing base station functions temporarily or semi-persistently.
  • the UE mentioned in the present disclosure may be implemented as a mobile terminal (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable/encrypted dog type mobile router, and a digital camera device) or an in-vehicle terminal. (such as car navigation equipment).
  • the UE may also be implemented as a terminal (also referred to as a machine type communication (MTC) terminal) that performs machine-to-machine (M2M) communication.
  • MTC machine type communication
  • M2M machine-to-machine
  • the UE may be a wireless communication module (such as an integrated circuit module including a single chip) installed on each of the above terminals.
  • FIG. 24 is a block diagram showing a first example of a schematic configuration of an eNB to which the technology of the present disclosure can be applied.
  • the eNB 1000 includes one or more antennas 1010 and a base station device 1020.
  • the base station device 1020 and each antenna 1010 may be connected to each other via an RF cable.
  • the base station device 1020 includes a controller 1021, a memory 1022, a network interface 1023, and a wireless communication interface 1025.
  • the controller 1021 can be, for example, a CPU or a DSP, and operates various functions of higher layers of the base station device 1020. For example, controller 1021 generates data packets based on data in signals processed by wireless communication interface 1025 and communicates the generated packets via network interface 1023. The controller 1021 can bundle data from a plurality of baseband processors to generate bundled packets and deliver the generated bundled packets. The controller 1021 may have a logical function that performs control such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. This control can be performed in conjunction with nearby eNBs or core network nodes.
  • the memory 1022 includes a RAM and a ROM, and stores programs executed by the controller 1021 and various types of control data such as a terminal list, transmission power data, and scheduling data.
  • the wireless communication interface 1025 supports any cellular communication scheme, such as Long Term Evolution (LTE) and LTE-Advanced, and provides wireless connectivity to terminals located in cells of the eNB 1000 via the antenna 1010.
  • Wireless communication interface 1025 may typically include, for example, a baseband (BB) processor 1026 and RF circuitry 1027.
  • the BB processor 1026 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and performs layers (eg, L1, Medium Access Control (MAC), Radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP)) Various types of signal processing.
  • BB processor 1026 may have some or all of the above described logic functions.
  • the BB processor 1026 may be a memory that stores a communication control program, or a module that includes a processor and associated circuitry configured to execute the program.
  • the update program can cause the functionality of the BB processor 1026 to change.
  • the module can be a card or blade that is inserted into a slot of base station device 1020. Alternatively, the module can also be a chip mounted on a card or blade.
  • the RF circuit 1027 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 1010.
  • the wireless communication interface 1025 can include a plurality of BB processors 1026.
  • multiple BB processors 1026 can be compatible with multiple frequency bands used by eNB 1000.
  • the wireless communication interface 1025 can include a plurality of RF circuits 1027.
  • multiple RF circuits 1027 can be compatible with multiple antenna elements.
  • FIG. 24 illustrates an example in which the wireless communication interface 1025 includes a plurality of BB processors 1026 and a plurality of RF circuits 1027, the wireless communication interface 1025 may also include a single BB processor 1026 or a single RF circuit 1027.
  • Each of the antennas 1140 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used by the RRH 1160 to transmit and receive wireless signals.
  • the eNB 1130 can include multiple antennas 1140.
  • multiple antennas 1140 can be compatible with multiple frequency bands used by eNB 1130.
  • FIG. 25 illustrates an example in which the eNB 1130 includes multiple antennas 1140, the eNB 1130 may also include a single antenna 1140.
  • the wireless communication interface 1155 supports any cellular communication scheme (such as LTE and LTE-Advanced) and provides wireless communication to terminals located in sectors corresponding to the RRH 1160 via the RRH 1160 and the antenna 1140.
  • Wireless communication interface 1155 can generally include, for example, BB processor 1156.
  • the BB processor 1156 is identical to the BB processor 1026 described with reference to FIG. 24 except that the BB processor 1156 is connected to the RF circuit 1164 of the RRH 1160 via the connection interface 1157.
  • the wireless communication interface 1155 can include a plurality of BB processors 1156.
  • multiple BB processors 1156 can be compatible with multiple frequency bands used by eNB 1130.
  • FIG. 25 illustrates an example in which the wireless communication interface 1155 includes a plurality of BB processors 1156, the wireless communication interface 1155 may also include a single BB processor 1156.
  • connection interface 1157 is an interface for connecting the base station device 1150 (wireless communication interface 1155) to the RRH 1160.
  • the connection interface 1157 may also be a communication module for communicating the base station device 1150 (wireless communication interface 1155) to the above-described high speed line of the RRH 1160.
  • the RRH 1160 includes a connection interface 1161 and a wireless communication interface 1163.
  • connection interface 1161 is an interface for connecting the RRH 1160 (wireless communication interface 1163) to the base station device 1150.
  • the connection interface 1161 may also be a communication module for communication in the above high speed line.
  • the processing circuit 710 described by using FIG. 7, and therein The setting unit 711, the configuration unit 712 and the adding unit 713, the processing circuit 910 described by using FIG. 9 and the generating unit 911 and the adding unit 912 therein, and the processing circuit 810 described by using FIG. 19 and the configuration unit 811 therein and
  • the adding unit 812 may be implemented by the controller 1021 and/or the controller 1151, and by using the communication unit 420 described in FIG. 4, the communication unit 720 described by using FIG. 7, the communication unit 920 described by using FIG.
  • the communication unit 820 described by using FIG. 19 can be implemented by the wireless communication interface 1025 and the wireless communication interface 1155 and/or the wireless communication interface 1163. At least a portion of the functionality can also be implemented by controller 1021 and controller 1151. For example, the controller 1021 and/or the controller 1151 can perform configuration functions and add functions by executing instructions stored in respective memories.
  • FIG. 26 is a block diagram showing an example of a schematic configuration of a smartphone 1200 to which the technology of the present disclosure can be applied.
  • the smart phone 1200 includes a processor 1201, a memory 1202, a storage device 1203, an external connection interface 1204, an imaging device 1206, a sensor 1207, a microphone 1208, an input device 1209, a display device 1210, a speaker 1211, a wireless communication interface 1212, and one or more An antenna switch 1215, one or more antennas 1216, a bus 1217, a battery 1218, and an auxiliary controller 1219.
  • the processor 1201 may be, for example, a CPU or a system on chip (SoC), and controls the functions of the application layer and the other layers of the smartphone 1200.
  • the memory 1202 includes a RAM and a ROM, and stores data and programs executed by the processor 1201.
  • the storage device 1203 may include a storage medium such as a semiconductor memory and a hard disk.
  • the external connection interface 1204 is an interface for connecting an external device such as a memory card and a universal serial bus (USB) device to the smartphone 1200.
  • USB universal serial bus
  • the wireless communication interface 1212 supports any cellular communication scheme (such as LTE and LTE-Advanced) and performs wireless communication.
  • Wireless communication interface 1212 may generally include, for example, BB processor 1213 and RF circuitry 1214.
  • the BB processor 1213 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and performs various types of signal processing for wireless communication.
  • the RF circuit 1214 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 1216.
  • the wireless communication interface 1212 can be a chip module on which the BB processor 1213 and the RF circuit 1214 are integrated. As shown in FIG.
  • wireless communication interface 1212 can support additional types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless local area network (LAN) schemes.
  • the wireless communication interface 1212 can include a BB processor 1213 and RF circuitry 1214 for each wireless communication scheme.
  • Each of the antenna switches 1215 switches the connection destination of the antenna 1216 between a plurality of circuits included in the wireless communication interface 1212, such as circuits for different wireless communication schemes.
  • Each of the antennas 1216 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used by the wireless communication interface 1212 to transmit and receive wireless signals.
  • smart phone 1200 can include multiple antennas 1216.
  • FIG. 26 illustrates an example in which smart phone 1200 includes multiple antennas 1216, smart phone 1200 may also include a single antenna 1216.
  • smart phone 1200 can include an antenna 1216 for each wireless communication scheme.
  • the antenna switch 1215 can be omitted from the configuration of the smartphone 1200.
  • the bus 1217 stores the processor 1201, the memory 1202, the storage device 1203, the external connection interface 1204, the imaging device 1206, the sensor 1207, the microphone 1208, the input device 1209, the display device 1210, the speaker 1211, the wireless communication interface 1212, and the auxiliary controller 1219 with each other. connection.
  • the battery 1218 is provided via a feeder to each block of the smart phone 1200 shown in FIG. For power supply, the feeder is partially shown as a dotted line in the figure.
  • the secondary controller 1219 operates the minimum required functions of the smartphone 1200, for example, in a sleep mode.
  • the processing circuit 610 described by using FIG. 21 and the acquisition unit 611 and the extraction unit 612 therein can be implemented by the processor 1201 or the auxiliary controller 1219, and described by using FIG.
  • the communication unit 630 can be implemented by the wireless communication interface 1212. At least a portion of the functionality may also be implemented by processor 1201 or secondary controller 1219.
  • the processor 1201 or the auxiliary controller 1219 can perform an information acquisition function and an information extraction function by executing an instruction stored in the memory 1202 or the storage device 1203.
  • FIG. 27 is a block diagram showing an example of a schematic configuration of a car navigation device 1320 to which the technology of the present disclosure can be applied.
  • the car navigation device 1320 includes a processor 1321, a memory 1322, a global positioning system (GPS) module 1324, a sensor 1325, a data interface 1326, a content player 1327, a storage medium interface 1328, an input device 1329, a display device 1330, a speaker 1331, and a wireless device.
  • the processor 1321 can be, for example, a CPU or SoC and controls the navigation functions and additional functions of the car navigation device 1320.
  • the memory 1322 includes a RAM and a ROM, and stores data and programs executed by the processor 1321.
  • the GPS module 1324 measures the position (such as latitude, longitude, and altitude) of the car navigation device 1320 using GPS signals received from GPS satellites.
  • Sensor 1325 can include a set of sensors, such as a gyro sensor, a geomagnetic sensor, and an air pressure sensor.
  • the data interface 1326 is connected to, for example, the in-vehicle network 1341 via a terminal not shown, and acquires data (such as vehicle speed data) generated by the vehicle.
  • the wireless communication interface 1333 supports any cellular communication scheme (such as LTE and LTE-Advanced) and performs wireless communication.
  • Wireless communication interface 1333 may generally include, for example, BB processor 1334 and RF circuitry 1335.
  • the BB processor 1334 can perform, for example, encoding/decoding, modulation / Demodulation and multiplexing/demultiplexing, and performing various types of signal processing for wireless communication.
  • the RF circuit 1335 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 1337.
  • the wireless communication interface 1333 can also be a chip module on which the BB processor 1334 and the RF circuit 1335 are integrated. As shown in FIG.
  • the wireless communication interface 1333 may include a plurality of BB processors 1334 and a plurality of RF circuits 1335.
  • FIG. 27 illustrates an example in which the wireless communication interface 1333 includes a plurality of BB processors 1334 and a plurality of RF circuits 1335, the wireless communication interface 1333 may also include a single BB processor 1334 or a single RF circuit 1335.
  • the wireless communication interface 1333 can support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near-field communication scheme, and a wireless LAN scheme.
  • the wireless communication interface 1333 may include a BB processor 1334 and an RF circuit 1335 for each wireless communication scheme.
  • Each of the antenna switches 1336 switches the connection destination of the antenna 1337 between a plurality of circuits included in the wireless communication interface 1333, such as circuits for different wireless communication schemes.
  • Each of the antennas 1337 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used by the wireless communication interface 1333 to transmit and receive wireless signals.
  • car navigation device 1320 can include a plurality of antennas 1337.
  • FIG. 27 shows an example in which the car navigation device 1320 includes a plurality of antennas 1337, the car navigation device 1320 may also include a single antenna 1337.
  • car navigation device 1320 can include an antenna 1337 for each wireless communication scheme.
  • the antenna switch 1336 can be omitted from the configuration of the car navigation device 1320.
  • Battery 1338 provides power to various blocks of car navigation device 1320 shown in FIG. 27 via feeders, which are partially shown as dashed lines in the figures. Battery 1338 accumulates power supplied from the vehicle.
  • the processing circuit 610 described by using FIG. 21 and the acquisition unit 611 and the extraction unit 612 therein can be realized by the processor 1321, and by using the communication unit 630 described with reference to FIG. It can be implemented by the wireless communication interface 1333. At least a portion of the functionality can also be implemented by processor 1321.
  • the processor 1321 can perform various measurement reporting functions and relay communication functions by executing instructions stored in the memory 1322.
  • the technology of the present disclosure may also be implemented to include a car navigation device 1320, an in-vehicle network 1341 and an onboard system (or vehicle) 1340 of one or more of the vehicle modules 1342.
  • the vehicle module 1342 generates vehicle data such as vehicle speed, engine speed, and fault information, and outputs the generated data to the in-vehicle network 1341.

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Abstract

本公开涉及无线通信系统中的电子设备和无线通信方法。根据本公开的电子设备包括一个或多个处理电路，所述处理电路被配置为执行以下操作：配置承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的所述无线通信系统中的用户设备在非授权信道上进行的包括物理上行共享信道PUSCH传输的上行传输的上行子帧之间的时间映射信息。使用根据本公开的电子设备和无线通信方法，可以确定承载上行调度授权信令的下行子帧和承载包括PUSCH传输的上行传输的上行子帧之间的时间映射关系，从而实现了对非授权信道的有效利用。

Description

无线通信系统中的电子设备和无线通信方法
本申请要求于2016年4月1日提交中国专利局、申请号为201610202724.3、发明名称为“无线通信系统中的电子设备和无线通信方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及无线通信的技术领域，具体地涉及无线通信系统中的电子设备和用于在无线通信系统中进行无线通信的方法。
背景技术
这个部分提供了与本公开有关的背景信息，这不一定是现有技术。
随着无线网络的发展演进，其承载的服务越来越多，因此需要额外的频谱资源来支持大量的数据传输。蜂窝无线网络运营商在使用现有LTE(Long Term Evolution，长期演进)网络的基础上，开始探讨如何使用非授权频谱资源例如5GHz ISM(Industrial Scientific Medical，工业、科学与医疗)频段。本公开涉及无线通信网络中的LAA(Licensed Assisted Access，授权辅助接入)通信。
在传统的TDD(Time Division Duplexing，时分双工)和FDD(Frequency Division Duplexing，频分双工)无线通信方案中，承载UL grant(上行调度授权)信令的SF(SubFrame，子帧)和承载由UL grant调度的PUSCH(Physical Uplink Shared Channel，物理上行共享信道)传输的SF之间的映射关系是确定且已知的。然而在LAA通信中，上行传输和下行传输存在着差异，无法利用下行确定的映射关系来规定下行传输。因此，当UE(User Equipment，用户设备)在非授权信道上进行PUSCH传输时，UL grant和对应调度的PUSCH传输之间的映射关系有待进一步讨论。
另外，UE在非授权信道上进行上行传输时，均需要首先进行信道检测过程来检测信道是否空闲，然而，何时采用何种类型的信道检测过程以及信道检测参数在不同的上行传输时段是否需要调整均是在未授权信道进行传输亟待解决的问题。
因此，针对以上问题中的至少一个，有必要提出一种新的无线通信技术方案，以解决UE在非授权信道上的PUSCH传输问题，从而实现对非授权信道的有效利用。
发明内容
这个部分提供了本公开的一般概要，而不是其全部范围或其全部特征的全面披露。
本公开的目的在于提供一种无线通信系统中的电子设备和用于在无线通信系统中进行无线通信的方法，使得能够实现对非授权信道的有效利用。
根据本公开的一方面，提供了一种无线通信系统中的电子设备，该电子设备包括一个或多个处理电路，所述处理电路被配置为执行以下操作：配置承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的所述无线通信系统中的用户设备在非授权信道上进行的包括物理上行共享信道PUSCH传输的上行传输的上行子帧之间的时间映射信息。
根据本公开的另一方面，提供了一种无线通信系统中的电子设备，该电子设备包括一个或多个处理电路，所述处理电路被配置为执行以下操作：获取来自所述无线通信系统中的基站的下行信令；以及从所述下行信令中提取承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的在非授权信道上进行的包括物理上行共享信道PUSCH传输的上行传输的上行子帧之间的时间映射信息。
根据本公开的另一方面，提供了一种无线通信系统，该无线通信系统包括基站和用户设备，其中，所述基站包括：第一收发机；以及一个或多个第一处理电路，所述第一处理电路被配置为执行以下操作：配置承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的所述用户设备在非授权信道上进行的包括物理上行共享信道PUSCH传输的上行传输的上行子帧之间的时间映射信息；以及使所述第一收发机将所述时间映射信息通知给所述用户设备，并且所述用户设备包括：第二收发机；以及一个或多个第二处理电路，所述第二处理电路被配置为执行以下操作：通过所述第二收发机获取来自所述基站的下行信令；以及从所述下行信令中提取所述时间映射信息。
根据本公开的另一方面，提供了一种用于在无线通信系统中进行无线通信的方法，该方法包括：配置承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的所述无线通信系统中的用户设备在非授权信道上进行的包括物理上行共享信道PUSCH传输的上行传输的上行子帧之间的时间映射信息；以及将所述时间映射信息通知给所述用户设备。
根据本公开的另一方面，提供了一种用于在无线通信系统中进行无线通信的方法，该方法包括：获取来自所述无线通信系统中的基站的下行信令；以及从所述下行信令中提取承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的在非授权信道上进行的包括物理上行共享信道PUSCH传输的上行传输的上行子帧之间的时间映射信息。
使用根据本公开的无线通信系统中的电子设备和用于在无线通信系统中进行无线通信的方法，可以确定承载上行调度授权信令的下行子帧和承载包括PUSCH传输的上行传输的上行子帧之间的时间映射关系，从而实现了对非授权信道的有效利用。
从在此提供的描述中，进一步的适用性区域将会变得明显。这个概要中的描述和特定例子只是为了示意的目的，而不旨在限制本公开的范围。
附图说明
在此描述的附图只是为了所选实施例的示意的目的而非全部可能的实施，并且不旨在限制本公开的范围。在附图中：
图1是图示未授权频段上的PUSCH传输的示意图；
图2是图示同一MCOT之内的UL grant和UL传输突发之间关系的情形的示意图；
图3是图示跨越MCOT的UL grant和UL传输突发之间关系的情形的示意图；
图4是图示根据本公开的实施例的无线通信系统中的电子设备的结构的框图；
图5是图示根据本公开的优选实施例的UL grant设计的示意图；
图6是图示根据本公开的另一优选实施例的UL grant设计的示意图；
图7是图示根据本公开的另一实施例的无线通信系统中的电子设备的结构的框图；
图8是图示根据本公开的实施例的隐式信令设计的示意图；
图9是图示根据本公开的另一实施例的无线通信系统中的电子设备的结构的框图；
图10是图示图9的电子设备中包括的生成单元的结构的框图；
图11是图示使用类型A多载波操作时的信道检测类型配置的流程图；
图12是图示使用类型A多载波操作时的信道检测类型配置的结果的例子的示意图；
图13是图示使用类型B多载波操作时的信道检测类型配置的流程图；
图14是图示使用类型B多载波操作时的信道检测类型配置的结果的例子的示意图；
图15是图示根据本公开的实施例的信道检测类型指示信令的设计流程图；
图16是图示根据本公开的实施例的信道检测类型指示信令的设计的示意图；
图17是图示根据本公开的另一实施例的信道检测类型指示信令的设计流程图；
图18是图示根据本公开的另一实施例的信道检测类型指示信令的设计流程图；
图19是图示根据本公开的另一实施例的无线通信系统中的电子设备的结构的框图；
图20是图示根据本公开的实施例的信道检测参数设计的示意图；
图21是图示根据本公开的另一实施例的无线通信系统中的电子设备的结构的框图；
图22是图示根据本公开的实施例的无线通信方法的流程图；
图23是图示根据本公开的另一实施例的无线通信方法的流程图；
图24是示出适用于本公开的eNB(evolution Node Base Station，演进节点基站)的示意性配置的第一示例的框图；
图25是示出适用于本公开的eNB的示意性配置的第二示例的框图；
图26是示出适用于本公开的智能电话的示意性配置的示例的框图；以及
图27是示出适用于本公开的汽车导航设备的示意性配置的示例的框图。
虽然本公开容易经受各种修改和替换形式，但是其特定实施例已作为例子在附图中示出，并且在此详细描述。然而应当理解的是，在此对特定实施例的描述并不打算将本公开限制到公开的具体形式，而是相反地，本公开目的是要覆盖落在本公开的精神和范围之内的所有修改、等效和替换。要注意的是，贯穿几个附图，相应的标号指示相应的部件。
具体实施方式
现在参考附图来更加充分地描述本公开的例子。以下描述实质上只是示例性的，而不旨在限制本公开、应用或用途。
提供了示例实施例，以便本公开将会变得详尽，并且将会向本领域技术人员充分地传达其范围。阐述了众多的特定细节如特定部件、装置和方法的例子，以提供对本公开的实施例的详尽理解。对于本领域技术人员而言将会明显的是，不需要使用特定的细节，示例实施例可以用许多不同的形式来实施，它们都不应当被解释为限制本公开的范围。在某些示例实施例中，没有详细地描述众所周知的过程、众所周知的结构和众所周知的技术。
本公开所涉及的UE(User Equipment，用户设备)包括但不限于移动终端、计算机、车载设备等具有无线通信功能的终端。进一步，取决于具体所描述的功能，本公开所涉及的UE还可以是UE本身或其中的部件如芯片。此外，类似地，本公开中所涉及的基站可以例如是eNB(evolution Node Base Station，演进节点基站)或者是eNB中的部件如芯片。
在本公开中，信道和载波被认为是对应的，即一个载波对应于一个信道。在下文的描述中，对于载波和信道的使用不特意区分。此外，根据本公开的实施例，信道检测过程用于检测信道是否空闲，可以是LBT (Listen Before Transmit，先听后发)过程。在下文的某些实施例中，以LBT过程为例对根据本公开的多载波信道检测过程进行说明。值得注意的是，在本公开中，信道检测过程并不限于LBT过程，而是包括了其他类型的信道检测过程。对于这些其他类型的信道检测过程，在实施根据本公开的电子设备和方法时是类似的。
对于eLAA(Enhanced Licensed Assisted Access，增强授权辅助接入)PUSCH(Physical Uplink Shared Channel，物理上行共享信道)而言，可以支持至少RB(Resource Block，资源块)水平的多簇传输(大于2)，其详细设计有待进一步讨论。另外，针对PUSCH的传统资源分配(legacy resource allocation)的支持也有待进一步讨论。
对于eLAA而言，可以支持UL(UpLink，上行链路)grant和UL传输之间的灵活时间映射(timing mapping)。
对于使得UE在LAA的SCell(辅服务小区)中的多个子帧中的PUSCH传输成为可能的子帧中的针对UE的(一个或多个)UL grant的细节，至少可以考虑以下选项：
选项1)：针对UE的一个子帧中的单个UL grant可以调度N(N≥1)个子帧中的针对UE的N个PUSCH传输，其中每个子帧用于单个PUSCH。这里，N个子帧可以是连续的，也可以是不连续的。
选项2)：针对UE的子帧中的单个UL grant可以调度单个子帧中的单个PUSCH传输，然而UE可以在一个子帧中接收多个UL grant，用于不同子帧中的PUSCH传输。
选项3)：根据UL LBT结果，针对UE的子帧中的单个UL grant可以使得UE能够在多个子帧中之一当中进行单个PUSCH传输。
另外，还可以进行两个阶段的授权。公共半持久性的授权可以提供高级信息如RB(Resource Block，资源块)分配、MCS(Modulation and Coding Scheme，调制与编码方案)等。针对UE的子帧中的第二授权可以调度PUSCH传输，其对于某些UL子帧遵循上面提到的选项1)和2)。
对于eLAA的SCell中的UL传输而言，可以支持承载UL grant的子帧和相应的(一个或多个)PUSCH的(一个或多个)子帧之间的灵活时间映射。例如，可以假定最小延迟为4毫秒。
子帧中的针对UE的(一个或多个)UL grant可以使得LAA的SCell中的多个子帧中的针对UE的PUSCH传输成为可能，这对于跨载波调度 情形和自调度情形两者都成立。
图1示出了以自载波调度为例的未授权频段上的PUSCH传输的场景。如图1所示，围绕eNB的虚线表示eNB感测到的覆盖范围，而围绕eNB的实线则表示小区覆盖范围。eNB在进行自载波调度时需要进行信道感测以给用户设备在未授权频段上发送上行调度授权，小区内的各个用户设备UE1至UE5在上行调度授权的调度下可以经由未授权频段进行PUSCH传输。跨载波调度情形下，同样地，用户设备在上行调度授权的调度下可以经由未授权频段进行PUSCH传输。
关于未授权频段上的PUSCH传输，存在两种候选情形。图2示出了eNB在未授权频段信道检测空闲的情况下，在eNB的同一MCOT(Maximum Channel Occupancy Time，最大信道占用时间)之内的UL grant和UL传输突发(transmission burst)之间关系的情形。所述最大信道占用时间MCOT是指在未授权频段上允许连续传输的最大时间。所述MCOT的大小可根据信道使用优先级来确定。所述传输突发可以定义如下：每个传输突发是来自UE/eNB的连续传输，其中在同一CC(Component Carrier，分量载波)上没有紧接着来自同一UE/eNB的之前或之后的传输。
如图2所示，首先，eNB执行复杂的信道检测过程(Cat-4：如包含随机退避且竞争窗口大小可变的能量检测过程)以访问未授权频段。在信道检测空闲的情况下，eNB在编号为0的SF(SubFrame，子帧)中发送(一个或多个)UL grant。这里，假定SF0至SF3用于DL(DownLink，下行链路)传输突发，而SF4至SF9则用于UL传输突发。在进行UL传输之前，UE需要执行信道检测过程。
在图2中，承载UL grant的SF和包括PUSCH传输的UL传输处于同一MCOT中。因此可以认为，DL传输突发与全部UL传输突发之和小于等于MCOT。
图3示出了eNB在未授权频段信道检测空闲的情况下，超出eNB的同一MCOT之外的UL grant和UL传输突发之间关系的情形。
如图3所示，首先，eNB执行复杂的信道检测过程(如包含随机退避且竞争窗口大小可变的能量检测过程)以访问未授权频段。在信道检测成功的情况下，eNB在编号为0的SF中发送(一个或多个)UL grant。这里，假定SF0至SF3用于DL传输突发，而SF4至SF15则用于UL传 输突发。在进行UL传输之前，UE需要执行信道检测过程。
在图3中，第一个MCOT(MCOT#1)包括DL传输突发和部分的UL传输突发，而第二个MCOT(MCOT#2)则只包括UL传输突发。如在图3中可以看到的那样，承载UL grant和PUSCH传输的(一个或多个)SF超出了eNB的同一MCOT之外。即，DL传输突发与全部UL传输突发之和大于MCOT#1。
承载UL grant的SF和相应的(一个或多个)PUSCH传输的(一个或多个)SF之间可以灵活地进行时间映射。特别地，一个UL grant可以调度多个PUSCH传输，其中每个PUSCH传输由一个SF承载，并且不同的PUSCH传输由不同的SF承载。进一步，承载这个UL grant的SF和承载多个PUSCH传输的多个SF之间的时间映射关系是可以灵活地配置的，并且配置后的时间映射关系可以包含在时间映射信息中。另一方面，一个UL grant也可以仅调度一个PUSCH传输。同样地，承载这个UL grant的SF和承载这个PUSCH传输的SF之间的时间映射关系也是可以灵活地配置的，并且配置后的时间映射关系也可以包含在时间映射信息中。
另外，如果UE在非授权信道上的全部PUSCH传输都落在eNB的MCOT之内(如图2所示)，则UE可以执行简单的信道检测过程(cat-2：如不包含随机退避的能量检测过程)。如果检测到信道空闲，则UE可以进行PUSCH传输。但是，如果UE在非授权信道上的PUSCH传输落在eNB的MCOT之外(如图3所示)，则UE(例如在SF10之前)执行复杂的信道检测过程(cat-4：如包含随机退避且竞争窗口大小可变的能量检测过程)。
进一步，当UE需要在至少一个未授权载波上执行复杂的信道检测过程时，UE可能需要进行CWS(Contention Window Size，竞争窗口大小)调整，以便基于调整后的CWS来生成在复杂的信道检测过程中使用的计数器，以解决UE在非授权信道上的PUSCH传输问题，并且实现对非授权信道的有效利用。
在下文中，进一步以自载波调度的情形为例进行描述，但本公开并不仅仅限于自载波调度的情形。
首先描述根据本公开的实施例的UL grant的时间映射设计。图4图示了根据本公开的实施例的无线通信系统中的电子设备400的结构。
如图4所示，电子设备400可以包括处理电路410。需要说明的是，电子设备400既可以包括一个处理电路410，也可以包括多个处理电路410。另外，电子设备400还可以包括作为收发机的通信单元420等。
进一步，处理电路410可以包括各种分立的功能单元以执行各种不同的功能和/或操作。需要说明的是，这些功能单元可以是物理实体或逻辑实体，并且不同称谓的单元可能由同一个物理实体实现。
例如，如图4所示，处理电路410可以包括配置单元411。另外，处理电路410还可以包括添加单元412。
配置单元411可以配置承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的UE在非授权信道上进行的包括PUSCH传输的上行传输的上行子帧之间的时间映射信息。在本公开中，上行调度授权信令可以是上面提到的UL grant信令。
使用根据本公开的实施例的电子设备400，可以确定承载上行调度授权信令的下行子帧和承载包括PUSCH传输的上行传输的上行子帧之间的时间映射关系，从而实现了对非授权信道的有效利用。
根据本公开的优选实施例，添加单元412可以将时间映射信息添加到物理层信令或MAC(Media Access Control,介质访问控制)层信令中，以通知给UE。
根据本公开的优选实施例，在配置时间映射信息时，配置单元411可以将承载一个上行调度授权信令的一个下行子帧映射到承载由这个上行调度授权信令调度的包括PUSCH传输的上行传输的多个上行子帧。在这之后，添加单元412可以将时间映射信息添加到上行调度授权信令中。
在根据本公开的优选实施例中，L1信令指示了承载一个UL grant及其相应的PUSCH传输的SF之间的清楚的时间映射信息。在一个SF中，一个单一的UL grant可以包括对于多个SF有效的调度信息。可以在每个载波的基础上生成这种显式信令。
图5图示了根据本公开的优选实施例的UL grant设计的示意图。如图5所示，首先，eNB执行复杂的信道检测过程(如包含随机退避且竞争窗口大小可变的能量检测过程)以访问未授权频段。在信道检测成功的情况下，eNB在未授权频段上具有一MCOT。eNB在编号为0的SF中发送一个UL grant。这里，假定SF0至SF3用于DL传输突发，而SF4至SF15则用于UL传输突发。在进行UL传输之前，UE需要执行信道检测 过程。
与图3类似，在图5中，第一个MCOT(MCOT#1)包括DL传输突发和部分的UL传输突发，而第二个MCOT(MCOT#2)则只包括UL传输突发。
在图5中，UE会在SF0中接收到一个UL grant，而这个UL grant包括信息，所述信息指示这个UL grant对于SF4、SF5、SF6和SF10有效。如果在经历LBT过程后可以传输PUSCH，并且UE需要进行PUSCH传输，则UE将会在SF4、SF5、SF6和SF10中进行PUSCH传输。
为了将时间映射信息添加到上行调度授权信令中，添加单元412例如可以对UL grant中的10个填充比特进行重用，每个比特指示在即将到来的SF中是否对特定UE进行调度。
例如，在Bit0,Bit1,Bit2,…,Bit9中，“0”指示UE被调度，而“1”则指示UE未被调度。如果UE在子帧N中接收到一个UL grant，则Bit0指示在子帧N+4中这个UE是否被调度，Bit1指示在子帧N+5中这个UE是否被调度，以此类推，并且Bit9指示在子帧N+13中这个UE是否被调度。
这样一来，就可以确定承载UL grant的一个下行子帧如SF0和承载PUSCH传输的多个上行子帧如SF4、SF5、SF6和SF10之间的时间映射关系，并且承载PUSCH传输的多个上行子帧的位置是灵活可调的，从而实现了对非授权信道的有效利用。
根据本公开的另一优选实施例，一个下行子帧可以承载多个上行调度授权信令。在这种情况下，配置单元411可以配置承载多个上行调度授权信令中的每一个的下行子帧和承载由多个上行调度授权信令中的每一个调度的包括PUSCH传输的上行传输的一个上行子帧之间的每个时间映射信息。在这之后，添加单元412可以将每个时间映射信息添加到多个上行调度授权信令中的每一个中，以通知给UE。
在根据本公开的另一优选实施例中，L1信令指示了承载多个UL grant及其相应的包括PUSCH传输的上行传输的SF之间的清楚的时间映射信息。在一个SF中，UE可以接收到多个UL grant，并且每个UL grant由一个SF使用(进行PUSCH传输)。可以在每个载波的基础上生成这种显式信令。
图6图示了根据本公开的另一优选实施例的UL grant设计的示意 图。如图6所示，首先，eNB执行复杂的信道检测过程(如包含随机退避且竞争窗口大小可变的能量检测过程)以访问未授权频段。在信道检测成功的情况下，eNB在编号为0的SF中发送4个UL grant。这里，假定SF0至SF3用于DL传输突发，而SF4至SF15则用于UL传输突发。在进行UL传输之前，UE需要执行信道检测过程。
与图3和5类似，在图6中，第一个MCOT(MCOT#1)包括DL传输突发和部分的UL传输突发，而第二个MCOT(MCOT#2)则只包括UL传输突发。
在图6中，UE会在SF0中接收到多个(4个)UL grant。在每个UL grant中，都会添加清楚的映射信息。例如，UL grant 1对于SF4有效，UL grant 2对于SF5有效，UL grant 3对于SF6有效，UL grant 4对于SF10有效，等等。
如果在经历LBT过程后可以传输PUSCH，并且UE需要进行PUSCH传输，则UE将会在SF4、SF5、SF6和SF10中进行PUSCH传输。
对于多个UL grant的格式设计例如可以如下。对于常规的UL grant，可以解码N次，以得到UL grant 1，UL grant 2，…，UL grant N。对于被级联的UL grant，可以解码一次就得到UL grant 1+UL grant 2+,…,+UL grant N。
这样一来，就可以确定承载多个UL grant如UL grant 1、UL grant 2、UL grant 3和UL grant 4的一个下行子帧如SF0和承载PUSCH传输的多个上行子帧如SF4、SF5、SF6和SF10之间的时间映射关系，从而实现了对非授权信道的有效利用。
图7图示了根据本公开的另一实施例的无线通信系统中的电子设备700的结构。
如图7所示，电子设备700可以包括处理电路710。需要说明的是，电子设备700既可以包括一个处理电路710，也可以包括多个处理电路710。另外，电子设备700还可以包括作为收发机的通信单元720等。
进一步，处理电路710可以包括各种分立的功能单元以执行各种不同的功能和/或操作。需要说明的是，这些功能单元可以是物理实体或逻辑实体，并且不同称谓的单元可能由同一个物理实体实现。
例如，如图7所示，处理电路710可以包括设置单元711、配置单元 712和添加单元713。
设置单元711可以将一个上行调度授权信令设置成能够调度在承载下一个上行调度授权信令的下一个下行子帧之前的全部上行子帧所承载的PUSCH传输。
配置单元712可以配置承载一个上行调度授权信令的下行子帧和实际承载由一个上行调度授权信令调度的包括PUSCH传输的上行传输的上行子帧之间的实际时间映射信息。
添加单元713可以将实际时间映射信息添加到物理层信令或MAC层信令中，以通知给UE。
在如图7所示的技术方案中，在一个SF中，UE可以接收到一个单一的UL grant，但是这个UL grant对于全部的即将到来的上行SF都有效，直到UE接收到下一个新的UL grant为止。可以在每个载波的基础上生成这种隐式信令。并且，UE还可以(经由L1或MAC信令)接收到指示是否在即将到来的多个上行SF中进行调度的显式映射信息。
在第一阶段，UE假定一个UL grant对于全部的即将到来的上行SF都有效，直到它接收到另一个UL grant为止。图8示出了根据本公开的实施例的隐式信令设计的示意图。
如图8所示，首先，eNB执行复杂的信道检测过程(如包含随机退避且竞争窗口大小可变的能量检测过程)以访问未授权频段。在信道检测成功的情况下，UE会在编号为0的SF中接收到一个UL grant 1。这里，假定SF0至SF3用于DL传输突发，而SF4至SF11则用于UL传输突发。在当前的实施例中，UL grant 1对于SF4至SF11全都有效。
接下来，在SF12中，UE会接收到另一个UL grant 2，此时，UL grant1的效力终止。这里，假定SF12至SF15用于DL传输突发，而SF16至SF18则用于UL传输突发。在当前的实施例中，UL grant 2对于SF16至SF18全都有效，直到UE接收到下一个UL grant为止。
在第二阶段，UE可以接收调度信息，该调度信息指示在即将到来的SF中是否进行调度。
为了获得调度信息，例如可以对UL grant中的填充比特(也可以是其它物理层信令或MAC层信令中的比特)进行重用，每个比特指示在即将到来的SF中是否对特定UE进行调度。表1示出了比特位和SF是否被调度之间的关系。
表1
Figure PCTCN2017076930-appb-000001
在表1中，在Bit0,Bit1,Bit2,…,Bit9中，“0”指示未UE被调度，而“1”则指示UE被调度。如果UE在子帧N中接收到一个UL grant，则Bit0指示在子帧N+4中这个UE是否被调度，Bit1指示在子帧N+5中这个UE是否被调度，以此类推，并且Bit9指示在子帧N+13中这个UE是否被调度。
表1表明，UE将会在SF4、SF5、SF6和SF10中被调度。
通过这样的方式，同样可以确定承载UL grant的下行子帧和承载PUSCH传输的多个上行子帧之间的时间映射关系，从而实现对非授权信道的有效利用。
上面描述了根据本公开的实施例的UL grant的时间映射设计。接下来描述根据本公开的实施例的信道检测类型指示信令的设计。图9图示了根据本公开的实施例的无线通信系统中的电子设备900的结构。
如图9所示，电子设备900可以包括处理电路910。需要说明的是，电子设备900既可以包括一个处理电路910，也可以包括多个处理电路910。另外，电子设备900还可以包括作为收发机的通信单元920等。
进一步，处理电路910可以包括各种分立的功能单元以执行各种不同的功能和/或操作。需要说明的是，这些功能单元可以是物理实体或逻 辑实体，并且不同称谓的单元可能由同一个物理实体实现。
例如，如图9所示，处理电路910可以包括生成单元911和添加单元912。
生成单元911可以生成关于UE在非授权信道上进行包括PUSCH传输的上行传输之前执行信道检测过程的信道检测类型的配置信息。
添加单元912可以将生成单元911生成的配置信息添加到物理层信令中，以通知给UE。
使用根据本公开的实施例的电子设备900，可以确定UE在非授权信道上进行包括PUSCH传输的上行传输之前执行信道检测过程的信道检测类型，从而实现了对非授权信道的有效利用。
图10图示了图9的电子设备900中包括的生成单元911的结构的例子。如图10所示，生成单元911可以包括设置单元9111以及配置单元9112和9113。
根据本公开的优选实施例，设置单元9111可以将非授权信道上的多个非授权载波设置成彼此独立。
针对多个非授权载波中的每一个，当承载PUSCH传输的上行子帧落在MCOT之内时，配置单元9112可以将信道检测类型配置为第一信道检测过程(Cat-2)。
另一方面，针对多个非授权载波中的每一个，当承载PUSCH传输的上行子帧落在MCOT之外时，配置单元9113可以将信道检测类型配置为第二信道检测过程(Cat-4)。
根据本公开的实施例，信道检测可以包括特征检测和能量检测。在信道检测是特征检测的情况下，包括前导序列检测(preamble detection)和PLMN(Public Land Mobile Network，公共陆地移动网络)+PSS(primary synchronization signal，主同步信号)/SSS(secondary synchronization signal，辅同步信号)检测。在信道检测是能量检测的情况下，信道检测过程可以包括：(a)不包含随机退避的能量检测；(b)包含随机退避但是CWS固定的能量检测；以及(c)包含随机退避且竞争窗口大小可变的能量检测。在类别(a)中，能量检测指示空闲后直接进行数据传输。在类别(b)和(c)中，信道检测过程分为两个阶段，其中，第一个阶段包括初始检测时段和随机退避(random backoff)时段，第二个阶段包括自我延迟(self-deferral)时段(可选)。在初始检测时段结束 后进入随机退避时段，其中在随机退避时段中，仍进行能量检测，在该时段中通过设定随机退避计数器(也简称为计数器)来进行退避。当能量检测指示信道被占用时，随机退避计数器的计数被打断，其中随机退避计数器基于CWS来设定，信道检测进入defer阶段进一步感测信道是否空闲，如果信道空闲则随机退避计数器继续倒数，直到计数结束。在检测到信道空闲时，如果即将执行数据传输的时隙还未到来，则进入自我延迟时段以等待执行数据传输的时隙到来。在自我延迟时段中仍然在进行能量检测，当检测到信道被占用时，也不能使用该信道执行数据传输。换言之，在类别(b)和(c)中，在信道检测过程的两个阶段，即初始检测时段、随机退避时段和自我延迟时段，都在执行能量检测。类别(b)和(c)的主要区别是：在类别(b)中，CWS是固定的，而在类别(c)中，CWS是可变的。能量检测具有一检测期，以类别(b)和(c)为例，该检测期包括初始检测时段、随机退避时段以及自我延迟阶段。当检测期过后，称为能量检测或信道检测完成。
在本公开的实施例中，类别(a)的信道检测过程不包含随机退避，只包括一段时间的能量检测过程。例如，在能量检测过程期间，如果感测到非授权载波是空闲的，则可以在该非授权载波上传输数据。其中，感测过程的维持时间可以根据需求进行选取，例如可以为大于25μs。在这个实施例中，可以根据任何现有的或者已知的方法来判断非授权载波是否空闲。例如，能量检测的方式为：如果在能量检测过程期间在非授权载波上检测到的能量小于能量检测的门限，说明该非授权载波处于空闲状态。
根据本公开的实施例，eNB可以根据实际的需求和传输的内容从上述几种信道检测过程中选择不同的信道检测过程。优选地，eNB可以选择第一信道检测过程和第二信道检测过程以使得第一信道检测过程比第二信道检测过程简单。
根据本公开的实施例，第一信道检测过程可以为不包含随机退避的能量检测，换言之，第一信道检测过程为一段时间的能量检测过程，在能量检测过程期间，如果感测到非授权载波是空闲的，则可以在该非授权载波上传输数据。
根据本公开的实施例，第二信道检测过程可以为包含随机退避且CWS可变的能量检测，换言之，第二信道检测过程可以包括初始检测时段、随机退避时段和自我延迟时段，并且CWS可变。
根据本公开的实施例，第一信道检测过程可以只包括一次能量检测 过程。第二信道检测过程可以包括多次能量检测过程。前文中提到，第二信道检测过程可以分为两个阶段，在这两个阶段中，都在执行能量检测过程，换言之，第二信道检测过程包括多次能量检测过程。第一信道检测过程为一段时间的能量检测过程，在能量检测过程期间，如果感测到非授权载波是空闲的，则可以在该非授权载波上传输数据。换言之，第一信道检测过程只包括一次能量检测过程。
根据本公开的实施例，第一信道检测过程比第二信道检测过程简单，因此功耗也少。如果电子设备在未授权载波上只执行第一信道检测过程，则可以大大减少电子设备的功耗。
根据本公开的实施例，eNB可以确定并指示在未授权频段之上的多个载波上进行UL传输之前UE执行信道检测过程(如LBT过程)时的信道检测类型。例如，eNB可以经由对DCI(Downlink Control Information，下行控制信息)format 1C进行重用来指示信道检测类型，这将在稍后进行详细描述。
eNB确定UE在多个载波上的信道检测类型的方式如下。首先，eNB需要选择多载波感测过程的类型。例如，类型A多载波操作指的是在每个配置的载波上独立地进行感测过程(亦即非授权信道上的多个非授权载波被设置成彼此独立)，并且通常使用上面提到的第二信道检测过程。进一步，类型B多载波操作指的是非授权信道上的多个非授权载波中的一个被设置成主要信道，并且其它非授权载波被设置成次要信道。主要信道通常使用上面提到的第二信道检测过程，而次要信道则通常使用上面提到的第一信道检测过程。
在eNB选择类型A多载波操作的情况下，如果UE的PUSCH传输落在eNB的MCOT之外，则UE应当使用第二信道检测过程，以确保信道检测过程的有效性。另一方面，如果UE的PUSCH传输落在eNB的MCOT之内，则UE可以使用第一信道检测过程，以减少电子设备的功耗。
基于上述规则，eNB可以配置UE应当在每个配置的载波上执行的信道检测过程的类型。
图11图示了在自载波调度的情况下使用类型A多载波操作时的信道检测类型配置的流程图。
如图11所示，在步骤S110中，eNB选择UL类型A多载波感测。
接下来，在步骤S120中，eNB确定UE的PUSCH传输是否将会落在eNB的MCOT之内。
如果eNB确定UE的PUSCH传输将会落在eNB的MCOT之内，则在步骤S140中，UE将会执行第一信道检测过程。
另一方面，如果eNB确定UE的PUSCH传输将会落在eNB的MCOT之外，则在步骤S130中，UE将会执行第二信道检测过程。
最后，在步骤S150中，eNB将信道检测类型配置的结果通知给UE，以对UE进行配置。
图12图示了使用类型A多载波操作时的信道检测类型配置的结果的例子。
如图12所示，载波C1是Pcell(主服务小区)，载波C2至C5是Scell(从服务小区)。在载波C2上，首先，eNB执行LBT 2(第二信道检测过程)。在信道检测成功的情况下，在进行UL传输之前，UE需要执行信道检测过程。
如图12所示，在载波C2上，在eNB的MCOT之内，UE可以执行LBT 1(第一信道检测过程)。而在eNB的MCOT之外，UE则执行LBT 2(第二信道检测过程)。在其它载波C3、C4和C5上，UE独立地执行LBT 2(第二信道检测过程)。
根据本公开的另一实施例，设置单元9111可以将非授权信道上的多个非授权载波中的一个设置成主要信道，并且将其它非授权载波设置成次要信道。从上面的描述可以看出，eNB在本实施例中选择了类型B多载波操作。在这种情况下，配置单元9112可以将针对次要信道的信道检测类型配置为第一信道检测过程。
针对主要信道，当承载PUSCH传输的上行子帧落在MCOT之内时，配置单元9112可以将信道检测类型配置为第一信道检测过程。
另一方面，针对主要信道，当承载PUSCH传输的上行子帧落在MCOT之外时，配置单元9113可以将信道检测类型配置为第二信道检测过程。
根据本公开的实施例，在eNB选择类型B多载波操作的情况下，如果UE的PUSCH传输发生在主要信道上，那么，如果UE的PUSCH传输落在eNB的MCOT之内，则UE应当使用第一信道检测过程，以减少 电子设备的功耗；而如果UE的PUSCH传输落在eNB的MCOT之外，则UE应当使用第二信道检测过程，以确保信道检测过程的有效性。另一方面，如果UE的PUSCH传输发生在次要信道上，则UE只使用第一信道检测过程。
基于上述规则，eNB可以配置UE应当在每个配置的载波上执行的信道检测过程的类型。
图13图示了使用类型B多载波操作时的信道检测类型配置的流程图。
如图13所示，在步骤S210中，eNB选择UL类型B多载波感测。
接下来，在步骤S220中，eNB确定UE的PUSCH传输是否发生在主要信道上。
如果eNB确定UE的PUSCH传输不是发生在主要信道上，则在步骤S230中，UE将会执行第一信道检测过程。
另一方面，如果eNB确定UE的PUSCH传输发生在主要信道上，则在步骤S240中，eNB确定UE的PUSCH传输是否落在eNB的MCOT之内。
如果eNB确定UE的PUSCH传输将会落在eNB的MCOT之内，则在步骤S260中，UE将会执行第一信道检测过程。
另一方面，如果eNB确定UE的PUSCH传输将会落在eNB的MCOT之外，则在步骤S250中，UE将会执行第二信道检测过程。
最后，在步骤S270中，eNB将信道检测类型配置的结果通知给UE，以对UE进行配置。
图14图示了使用类型B多载波操作时的信道检测类型配置的结果的例子。
如图14所示，载波C1是Pcell，并且载波C2至C5是Scell。进一步，载波C2是主要信道，并且载波C3至C5是次要信道。
如图14所示，在载波C2上，在eNB的MCOT之内，UE可以执行LBT 1(第一信道检测过程)。而在eNB的MCOT之外，UE则执行LBT 2(第二信道检测过程)。在其它载波C3、C4和C5上，UE总是执行LBT 1(第一信道检测过程)。
上面提到了eNB可以经由对DCI format 1C进行重用来指示信道检测类型。换言之，如图9所示的添加单元912可以对DCI format 1C进行重用，以将生成的配置信息添加到物理层信令中。
具体地，在DCI format 1C中，比特位b0b1b2用于Pcell，比特位b3b4b5用于Scell 1，比特位b6b7b8用于Scell 2，比特位b9b10b11用于Scell 3，比特位b12b13b14用于Scell 4，另外还包括填充比特位等等。
可以对用于Scell 1-4的比特位进行重用。作为例子，如果用于Scell1-4中的一个的3个比特位为“000”，则指示执行第二信道检测过程。另一方面，如果用于Scell 1-4中的一个的3个比特位为“111”，则指示执行第一信道检测过程。另外，还可以规定这对于预定长度的时期(例如6ms)有效。
作为另一个例子，针对用于Scell 1-4中的一个的3个比特位中的每一个，可以规定“0”指示执行第二信道检测过程，而“1”则指示第一信道检测过程。另外，还可以规定这对于预定长度的时期(例如2ms)有效。例如，如果用于Scell 1-4中的一个的3个比特位为“000”，则表明在3个2ms内都执行第二信道检测过程。如果用于Scell 1-4中的一个的3个比特位为“110”，则表明在第一个和第二个2ms内执行第一信道检测过程，而在第三个2ms内则执行第二信道检测过程。
图15图示了根据如上所述的本公开的实施例的信道检测类型指示信令的设计流程图。
如图15所示，首先，eNB向UE传输针对每个配置载波的UL grant。
接下来，eNB向UE传输用于UL grant对应的每个配置载波上的PUSCH传输的信道检测类型指示。具体地，可以根据本公开的实施例生成关于信道检测类型的配置信息，并且将生成的配置信息添加到物理层信令中，以通知给UE。
接下来，基于eNB传输的信道检测类型指示，UE在多个载波上执行信道检测过程。
最后，在信道检测成功的情况下，UE在每个配置载波上向eNB进行PUSCH传输。
根据本公开的另一实施例，如图9所示的生成单元911可以生成子帧边界信息作为配置信息。子帧边界信息可以指示落在无线通信系统中的基站端的信道检测成功之后的MCOT之内的最后一个子帧。图16图示了 根据该实施例的信道检测类型指示信令的设计的示意图。
如图16所示，UE将会接收到UL grant，并且将会知道UL grant针对SF4、SF6、SF9和SF10有效。
另外，UE还将会接收到SF边界信息。这里的SF边界为SF9。
因此，UE将会知道SF4、SF6和SF9落在MCOT之内，因此UE在这些子帧上将会执行第一信道检测过程。另一方面，UE将会知道SF10落在MCOT之外，因此UE在SF10上将会执行第二信道检测过程。
对于多载波而言，eNB同样可以向UE通知多载波信道感测类型过程(亦即上面提到的类型A或类型B)。
如果eNB选择了类型A，eNB也可以在每个配置载波上通知SF边界信息。
在UE接收到SF边界信息之后，如果UE判断即将到来的SF标号小于或等于SF边界，则UE将会使用第一信道检测过程来访问未授权载波。另一方面，如果UE判断即将到来的SF标号大于SF边界，则UE将会使用第二信道检测过程来访问未授权载波。另外，如果UE没有接收到SF边界信息，则UE可以使用第二信道检测过程来访问未授权载波。图17图示了根据当前实施例的信道检测类型指示信令的设计流程图。
如图17所示，首先eNB向UE传输关于多载波感测利用类型A的信息。
接下来，eNB向UE传输针对每个配置载波的UL grant。
在这之后，eNB可以向UE传输每个配置载波上的SF边界信息。
接下来，基于接收到的SF边界信息，UE可以确定每个配置载波上的信道检测类型。
接下来，基于确定的信道检测类型，UE在多个载波上执行信道检测过程。
最后，在信道检测成功的情况下，UE在每个配置载波上向eNB进行PUSCH传输。
另一方面，如果eNB选择了类型B，eNB也可以向UE通知SF边界信息以供主要信道使用。
在UE接收到SF边界信息之后，如果UE判断即将到来的SF标号 小于或等于SF边界，则UE将会使用第一信道检测过程来访问主要信道。另一方面，如果UE判断即将到来的SF标号大于SF边界，则UE将会使用第二信道检测过程来访问主要信道。另外，如果UE没有接收到SF边界信息，则UE可以使用第二信道检测过程来访问主要信道。图18图示了根据当前实施例的信道检测类型指示信令的设计流程图。
如图18所示，首先eNB向UE传输关于多载波感测利用类型B的信息。
接下来，eNB向UE传输关于主要信道和次要信道指示的信息。
在这之后，eNB可以向UE传输主要信道上的SF边界信息。
接下来，eNB向UE传输针对每个配置载波的UL grant。
接下来，基于关于主要信道和次要信道指示的信息以及主要信道上的SF边界信息，UE可以确定每个配置载波上的信道检测类型。
接下来，基于确定的信道检测类型，UE在多个载波上执行信道检测过程。
最后，在信道检测成功的情况下，UE在每个配置载波上向eNB进行PUSCH传输。
上面描述了根据本公开的实施例的信道检测类型指示信令的设计。接下来描述根据本公开的实施例的信道检测参数设计。图19图示了根据本公开的实施例的无线通信系统中的电子设备800的结构。
如图19所示，电子设备800可以包括处理电路810。需要说明的是，电子设备800既可以包括一个处理电路810，也可以包括多个处理电路810。另外，电子设备800还可以包括作为收发机的通信单元820等。
进一步，处理电路810可以包括各种分立的功能单元以执行各种不同的功能和/或操作。需要说明的是，这些功能单元可以是物理实体或逻辑实体，并且不同称谓的单元可能由同一个物理实体实现。
例如，如图19所示，处理电路810可以包括配置单元811和添加单元812。
配置单元811可以为非授权信道上的非授权载波配置信道检测参数。
添加单元812可以将配置的信道检测参数添加到物理层信令中，以通知给UE。
使用根据本公开的实施例的电子设备800，可以确定为非授权信道上的非授权载波配置的信道检测参数，从而实现了对非授权信道的有效利用。
根据本公开的实施例，信道检测参数可以是在包含随机退避且竞争窗口大小可变的能量检测过程中使用的竞争窗口大小。
根据本公开的优选实施例，基于在先的由同一上行调度授权信令调度的PUSCH传输的结果，配置单元811可以为非授权载波配置UE进行由同一上行调度授权信令调度的包括PUSCH传输的上行传输之前执行信道检测过程时使用的信道检测参数。
根据本公开的另一优选实施例，基于在先的由同一下行子帧承载的上行调度授权信令调度的PUSCH传输的结果，配置单元811可以为非授权载波配置UE进行由同一下行子帧承载的上行调度授权信令调度的包括PUSCH传输的上行传输之前执行信道检测过程时使用的信道检测参数。
具体地，eNB可以基于一定的PUSCH传输来进行CWS调整(亦即信道检测参数配置)，这些PUSCH传输要么共享同一UL grant，要么使用在同一SF中发送的不同UL grant。如果没有前面提到的PUSCH传输，则eNB可以基于全部的在先PUSCH传输来进行CWS调整。图20示出了根据当前实施例的信道检测参数设计的示意图。
如图20所示，根据本公开的实施例，SF12之前的CWS可以基于SF8和SF11中的PUSCH传输来进行调整，SF15之前的CWS可以基于SF8、SF11和SF12中的PUSCH传输来进行调整，并且SF16之前的CWS可以基于SF8、SF11、SF12和SF15中的PUSCH传输来进行调整。例如，可以基于PUSCH传输的成功率来调整CWS。作为PUSCH传输的响应的NACK的数目越多，则表明PUSCH传输的成功率越低，因此需要调大CWS。相反地，如果NACK的数目越少，则表明PUSCH传输的成功率越高，因此可以调小CWS。
需要说明的是，根据本公开的实施例，如上所述的无线通信系统可以是LAA系统，并且电子设备400、700、800和900可以是无线通信系统中的基站。
接下来结合图21来描述根据本公开的另一实施例的无线通信系统中的电子设备600。
图21图示了根据本公开的另一实施例的无线通信系统中的电子设备600的结构。
如图21所示，电子设备600可以包括处理电路610。需要说明的是，电子设备600既可以包括一个处理电路610，也可以包括多个处理电路610。另外，电子设备600还可以包括诸如收发机之类的通信单元620等。
如上面提到的那样，同样地，处理电路610也可以包括各种分立的功能单元以执行各种不同的功能和/或操作。这些功能单元可以是物理实体或逻辑实体，并且不同称谓的单元可能由同一个物理实体实现。
例如，如图21所示，处理电路610可以包括获取单元611和提取单元612。
获取单元611可以(例如经由通信单元620)获取来自无线通信系统中的基站的下行信令(例如物理层信令或MAC层信令)。
提取单元612可以从获取单元611获取的下行信令中提取承载上行调度授权信令的下行子帧和承载由上行调度授权信令调度的在非授权信道上进行的包括PUSCH传输的上行传输的上行子帧之间的时间映射信息。
优选地，处理电路610(例如获取单元611)可以获取一个上行调度授权信令。进一步，处理电路610(例如提取单元612)可以从这个上行调度授权信令中提取承载这个上行调度授权信令的一个下行子帧和承载由这个上行调度授权信令调度的包括PUSCH传输的上行传输的多个上行子帧之间的时间映射信息。
优选地，处理电路610(例如获取单元611)可以获取由同一下行子帧承载的多个上行调度授权信令。进一步，处理电路610(例如提取单元612)可以从多个上行调度授权信令中的每一个中提取同一下行子帧和承载由多个上行调度授权信令中的每一个调度的包括PUSCH传输的上行传输的一个上行子帧之间的每个时间映射信息。
优选地，处理电路610(例如确定单元，其未被示出)可以确定一个上行调度授权信令能够调度在承载下一个上行调度授权信令的下一个下行子帧之前的全部上行子帧所承载的PUSCH传输。进一步，处理电路610(例如提取单元612)可以从物理层信令或MAC层信令中提取承载这个上行调度授权信令的下行子帧和实际承载由这个上行调度授权信令调度的包括PUSCH传输的上行传输的上行子帧之间的实际时间映射信 息作为时间映射信息。
优选地，基于时间映射信息，处理电路610(例如生成单元，其未被示出)还可以生成在非授权信道上进行包括PUSCH传输的上行传输的指令。
优选地，处理电路610(例如提取单元612)可以从物理层信令中提取关于在非授权信道上进行包括PUSCH传输的上行传输之前执行信道检测过程的信道检测类型的配置信息。更优选地，处理电路610(例如提取单元612)可以从重用的DCI format 1C中提取配置信息。
优选地，处理电路610(例如获取单元611)可以获取子帧边界信息作为配置信息，所述子帧边界信息指示落在无线通信系统中的基站端的信道检测成功之后的MCOT之内的最后一个子帧。
优选地，基于配置信息，处理电路610(例如生成单元，其未被示出)可以生成在非授权信道上进行包括PUSCH传输的上行传输之前执行第一信道检测过程或第二信道检测过程的指令。如上面提到的那样，第一信道检测过程可以是不包含随机退避的能量检测过程，并且第二信道检测过程可以是包含随机退避且竞争窗口大小可变的能量检测过程。
优选地，处理电路610(例如提取单元612)可以从物理层信令中提取信道检测参数。进一步，基于提取的信道检测参数，处理电路610(例如配置单元，其未被示出)可以为非授权信道上的非授权载波配置信道检测参数。更优选地，信道检测参数可以是在包含随机退避且竞争窗口大小可变的能量检测过程中使用的竞争窗口大小。
需要说明的是，根据本公开的实施例，如上所述的无线通信系统可以是LAA系统，并且电子设备600可以是无线通信系统中的UE。
综上所述，根据本公开的实施例，可以提供一种无线通信系统，该无线通信系统包括基站和用户设备，其中，所述基站包括：第一收发机；以及一个或多个第一处理电路，所述第一处理电路被配置为执行以下操作：配置承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的所述用户设备在非授权信道上进行的PUSCH传输的上行子帧之间的时间映射信息；以及使所述第一收发机将所述时间映射信息通知给所述用户设备，并且所述用户设备包括：第二收发机；以及一个或多个第二处理电路，所述第二处理电路被配置为执行以下操作：通过所述第二收发机获取来自所述基站的下行信令；以及从所述下行信令中提取所述时间 映射信息。
接下来参考图22来描述根据本公开的实施例的用于在无线通信系统中进行无线通信的方法。图22示出了根据本公开的实施例的无线通信方法的流程图。
如图22所示，首先，在步骤S310中，配置承载上行调度授权信令的下行子帧和承载由上行调度授权信令调度的无线通信系统中的用户设备在非授权信道上进行的包括PUSCH传输的上行传输的上行子帧之间的时间映射信息。
然后，在步骤S320中，将时间映射信息通知给用户设备。
优选地，在配置时间映射信息时，可以将承载一个上行调度授权信令的一个下行子帧映射到承载由这个上行调度授权信令调度的包括PUSCH传输的上行传输的多个上行子帧，并且可以将时间映射信息添加到上行调度授权信令中。
优选地，下行子帧可以承载多个上行调度授权信令。在这种情况下，可以配置承载多个上行调度授权信令中的每一个的下行子帧和承载由多个上行调度授权信令中的每一个调度的包括PUSCH传输的上行传输的一个上行子帧之间的每个时间映射信息。进一步，可以将每个时间映射信息添加到多个上行调度授权信令中的每一个中，以通知给用户设备。
优选地，可以将一个上行调度授权信令设置成能够调度在承载下一个上行调度授权信令的下一个下行子帧之前的全部上行子帧所承载的包括PUSCH传输的上行传输。进一步，可以配置承载一个上行调度授权信令的下行子帧和实际承载由这个上行调度授权信令调度的包括PUSCH传输的上行传输的上行子帧之间的实际时间映射信息。进而，可以将实际时间映射信息添加到物理层信令或MAC层信令中，以通知给用户设备。
优选地，根据本公开的实施例的方法可以生成关于用户设备在非授权信道上进行包括PUSCH传输的上行传输之前执行信道检测过程的信道检测类型的配置信息。进一步，可以将生成的配置信息添加到物理层信令中，以通知给用户设备。
优选地，在生成配置信息时，可以将非授权信道上的多个非授权载波设置成彼此独立。针对多个非授权载波中的每一个，当承载包括PUSCH传输的上行传输的上行子帧落在MCOT之内时，可以将信道检测类型配置为第一信道检测过程；而当承载包括PUSCH传输的上行传输的上行子 帧落在MCOT之外时，则可以将信道检测类型配置为第二信道检测过程。
优选地，在生成配置信息时，可以将非授权信道上的多个非授权载波中的一个设置成主要信道，并且将其它非授权载波设置成次要信道。在这种情况下，可以将针对次要信道的信道检测类型配置为第一信道检测过程。针对主要信道，当承载包括PUSCH传输的上行传输的上行子帧落在MCOT之内时，可以将信道检测类型配置为第一信道检测过程；而当承载包括PUSCH传输的上行传输的上行子帧落在MCOT之外时，则可以将信道检测类型配置为第二信道检测过程。如上面提到的那样，第一信道检测过程为不包含随机退避的能量检测过程，并且第二信道检测过程为包含随机退避且竞争窗口大小可变的能量检测过程。
优选地，可以对DCI format 1C进行重用，以将生成的配置信息添加到物理层信令中。
优选地，可以生成子帧边界信息作为配置信息，所述子帧边界信息指示落在无线通信系统中的基站端的信道检测成功之后的MCOT之内的最后一个子帧。
优选地，根据本公开的实施例的方法可以为非授权信道上的非授权载波配置信道检测参数。进一步，可以将配置的信道检测参数添加到物理层信令中，以通知给用户设备。
优选地，基于在先的由同一上行调度授权信令调度的包括PUSCH传输的上行传输的结果，可以为非授权载波配置用户设备进行由同一上行调度授权信令调度的包括PUSCH传输的上行传输之前执行信道检测过程时使用的信道检测参数。
优选地，基于在先的由同一下行子帧承载的上行调度授权信令调度的包括PUSCH传输的上行传输的结果，可以为非授权载波配置用户设备进行由同一下行子帧承载的上行调度授权信令调度的包括PUSCH传输的上行传输之前执行信道检测过程时使用的信道检测参数。
接下来参考图23来描述根据本公开的另一实施例的用于在无线通信系统中进行无线通信的方法。图23示出了根据本公开的另一实施例的无线通信方法的流程图。
如图23所示，首先，在步骤S410中，获取来自无线通信系统中的基站的下行信令(例如物理层信令或MAC层信令)。
然后，在步骤S420中，从物理层信令或MAC层信令中提取承载上 行调度授权信令的下行子帧和承载由上行调度授权信令调度的在非授权信道上进行的包括PUSCH传输的上行传输的上行子帧之间的时间映射信息。
优选地，可以获取一个上行调度授权信令。进一步，可以从一个上行调度授权信令中提取承载这个上行调度授权信令的一个下行子帧和承载由这个上行调度授权信令调度的包括PUSCH传输的上行传输的多个上行子帧之间的时间映射信息。
优选地，可以获取由同一下行子帧承载的多个上行调度授权信令。进一步，可以从多个上行调度授权信令中的每一个中提取同一下行子帧和承载由多个上行调度授权信令中的每一个调度的包括PUSCH传输的上行传输的一个上行子帧之间的每个时间映射信息。
优选地，可以确定一个上行调度授权信令能够调度在承载下一个上行调度授权信令的下一个下行子帧之前的全部上行子帧所承载的包括PUSCH传输的上行传输。进一步，可以从物理层信令或MAC层信令中提取承载这个上行调度授权信令的下行子帧和实际承载由这个上行调度授权信令调度的包括PUSCH传输的上行传输的上行子帧之间的实际时间映射信息作为时间映射信息。
优选地，基于时间映射信息，可以生成在非授权信道上进行包括PUSCH传输的上行传输的指令。
优选地，根据本公开的实施例的方法可以从物理层信令中提取关于在非授权信道上进行包括PUSCH传输的上行传输之前执行信道检测过程的信道检测类型的配置信息。更优选地，可以从重用的DCI format 1C中提取配置信息。
优选地，可以获取子帧边界信息作为配置信息，所述子帧边界信息指示落在无线通信系统中的基站端的信道检测成功之后的MCOT之内的最后一个子帧。
优选地，基于配置信息，可以生成在非授权信道上进行包括PUSCH传输的上行传输之前执行第一信道检测过程或第二信道检测过程的指令。这里，第一信道检测过程为不包含随机退避的能量检测过程，并且第二信道检测过程为包含随机退避且竞争窗口大小可变的能量检测过程。
优选地，根据本公开的实施例的方法可以从物理层信令中提取信道检测参数。进一步，基于提取的信道检测参数，可以为非授权信道上的非 授权载波配置信道检测参数。
根据本公开的实施例的用于在无线通信系统中进行无线通信的方法的上述各个步骤的各种具体实施方式前面已经作过详细描述，在此不再重复说明。
本公开的技术能够应用于各种产品。例如，本公开中提到的基站可以被实现为任何类型的演进型节点B(eNB)，诸如宏eNB和小eNB。小eNB可以为覆盖比宏小区小的小区的eNB，诸如微微eNB、微eNB和家庭(毫微微)eNB。代替地，基站可以被实现为任何其他类型的基站，诸如NodeB和基站收发台(BTS)。基站可以包括：被配置为控制无线通信的主体(也称为基站设备)；以及设置在与主体不同的地方的一个或多个远程无线头端(RRH)。另外，下面将描述的各种类型的终端均可以通过暂时地或半持久性地执行基站功能而作为基站工作。
例如，本公开中提到的UE可以被实现为移动终端(诸如智能电话、平板个人计算机(PC)、笔记本式PC、便携式游戏终端、便携式/加密狗型移动路由器和数字摄像装置)或者车载终端(诸如汽车导航设备)。UE还可以被实现为执行机器对机器(M2M)通信的终端(也称为机器类型通信(MTC)终端)。此外，UE可以为安装在上述终端中的每个终端上的无线通信模块(诸如包括单个晶片的集成电路模块)。
图24是示出可以应用本公开的技术的eNB的示意性配置的第一示例的框图。eNB 1000包括一个或多个天线1010以及基站设备1020。基站设备1020和每个天线1010可以经由RF线缆彼此连接。
天线1010中的每一个均包括单个或多个天线元件(诸如包括在多输入多输出(MIMO)天线中的多个天线元件)，并且用于基站设备1020发送和接收无线信号。如图24所示，eNB 1000可以包括多个天线1010。例如，多个天线1010可以与eNB 1000使用的多个频带兼容。虽然图24示出其中eNB 1000包括多个天线1010的示例，但是eNB 1000也可以包括单个天线1010。
基站设备1020包括控制器1021、存储器1022、网络接口1023以及无线通信接口1025。
控制器1021可以为例如CPU或DSP，并且操作基站设备1020的较高层的各种功能。例如，控制器1021根据由无线通信接口1025处理的信号中的数据来生成数据分组，并经由网络接口1023来传递所生成的分组。 控制器1021可以对来自多个基带处理器的数据进行捆绑以生成捆绑分组，并传递所生成的捆绑分组。控制器1021可以具有执行如下控制的逻辑功能：该控制诸如为无线资源控制、无线承载控制、移动性管理、接纳控制和调度。该控制可以结合附近的eNB或核心网节点来执行。存储器1022包括RAM和ROM，并且存储由控制器1021执行的程序和各种类型的控制数据(诸如终端列表、传输功率数据以及调度数据)。
网络接口1023为用于将基站设备1020连接至核心网1024的通信接口。控制器1021可以经由网络接口1023而与核心网节点或另外的eNB进行通信。在此情况下，eNB 1000与核心网节点或其他eNB可以通过逻辑接口(诸如S1接口和X2接口)而彼此连接。网络接口1023还可以为有线通信接口或用于无线回程线路的无线通信接口。如果网络接口1023为无线通信接口，则与由无线通信接口1025使用的频带相比，网络接口1023可以使用较高频带用于无线通信。
无线通信接口1025支持任何蜂窝通信方案(诸如长期演进(LTE)和LTE-先进)，并且经由天线1010来提供到位于eNB 1000的小区中的终端的无线连接。无线通信接口1025通常可以包括例如基带(BB)处理器1026和RF电路1027。BB处理器1026可以执行例如编码/解码、调制/解调以及复用/解复用，并且执行层(例如L1、介质访问控制(MAC)、无线链路控制(RLC)和分组数据汇聚协议(PDCP))的各种类型的信号处理。代替控制器1021，BB处理器1026可以具有上述逻辑功能的一部分或全部。BB处理器1026可以为存储通信控制程序的存储器，或者为包括被配置为执行程序的处理器和相关电路的模块。更新程序可以使BB处理器1026的功能改变。该模块可以为插入到基站设备1020的槽中的卡或刀片。可替代地，该模块也可以为安装在卡或刀片上的芯片。同时，RF电路1027可以包括例如混频器、滤波器和放大器，并且经由天线1010来传送和接收无线信号。
如图24所示，无线通信接口1025可以包括多个BB处理器1026。例如，多个BB处理器1026可以与eNB 1000使用的多个频带兼容。如图24所示，无线通信接口1025可以包括多个RF电路1027。例如，多个RF电路1027可以与多个天线元件兼容。虽然图24示出其中无线通信接口1025包括多个BB处理器1026和多个RF电路1027的示例，但是无线通信接口1025也可以包括单个BB处理器1026或单个RF电路1027。
图25是示出可以应用本公开的技术的eNB的示意性配置的第二示 例的框图。eNB 1130包括一个或多个天线1140、基站设备1150和RRH1160。RRH 1160和每个天线1140可以经由RF线缆而彼此连接。基站设备1150和RRH 1160可以经由诸如光纤线缆的高速线路而彼此连接。
天线1140中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件)并且用于RRH 1160发送和接收无线信号。如图25所示，eNB 1130可以包括多个天线1140。例如，多个天线1140可以与eNB 1130使用的多个频带兼容。虽然图25示出其中eNB 1130包括多个天线1140的示例，但是eNB 1130也可以包括单个天线1140。
基站设备1150包括控制器1151、存储器1152、网络接口1153、无线通信接口1155以及连接接口1157。控制器1151、存储器1152和网络接口1153与参照图24描述的控制器1021、存储器1022和网络接口1023相同。
无线通信接口1155支持任何蜂窝通信方案(诸如LTE和LTE-先进)，并且经由RRH 1160和天线1140来提供到位于与RRH 1160对应的扇区中的终端的无线通信。无线通信接口1155通常可以包括例如BB处理器1156。除了BB处理器1156经由连接接口1157连接到RRH 1160的RF电路1164之外，BB处理器1156与参照图24描述的BB处理器1026相同。如图25所示，无线通信接口1155可以包括多个BB处理器1156。例如，多个BB处理器1156可以与eNB 1130使用的多个频带兼容。虽然图25示出其中无线通信接口1155包括多个BB处理器1156的示例，但是无线通信接口1155也可以包括单个BB处理器1156。
连接接口1157为用于将基站设备1150(无线通信接口1155)连接至RRH 1160的接口。连接接口1157还可以为用于将基站设备1150(无线通信接口1155)连接至RRH 1160的上述高速线路中的通信的通信模块。
RRH 1160包括连接接口1161和无线通信接口1163。
连接接口1161为用于将RRH 1160(无线通信接口1163)连接至基站设备1150的接口。连接接口1161还可以为用于上述高速线路中的通信的通信模块。
无线通信接口1163经由天线1140来传送和接收无线信号。无线通信接口1163通常可以包括例如RF电路1164。RF电路1164可以包括例如混频器、滤波器和放大器，并且经由天线1140来传送和接收无线信号。 如图25所示，无线通信接口1163可以包括多个RF电路1164。例如，多个RF电路1164可以支持多个天线元件。虽然图25示出其中无线通信接口1163包括多个RF电路1164的示例，但是无线通信接口1163也可以包括单个RF电路1164。
在图24和图25所示的eNB 1000和eNB 1130中，通过使用图4所描述的处理电路410以及其中的配置单元411和添加单元412、通过使用图7所描述的处理电路710以及其中的设置单元711、配置单元712和添加单元713、通过使用图9所描述的处理电路910以及其中的生成单元911和添加单元912以及通过使用图19所描述的处理电路810以及其中的配置单元811和添加单元812可以由控制器1021和/或控制器1151实现，并且通过使用图4所描述的通信单元420、通过使用图7所描述的通信单元720、通过使用图9所描述的通信单元920以及通过使用图19所描述的通信单元820可以由无线通信接口1025以及无线通信接口1155和/或无线通信接口1163实现。功能的至少一部分也可以由控制器1021和控制器1151实现。例如，控制器1021和/或控制器1151可以通过执行相应的存储器中存储的指令而执行配置功能和添加功能。
图26是示出可以应用本公开的技术的智能电话1200的示意性配置的示例的框图。智能电话1200包括处理器1201、存储器1202、存储装置1203、外部连接接口1204、摄像装置1206、传感器1207、麦克风1208、输入装置1209、显示装置1210、扬声器1211、无线通信接口1212、一个或多个天线开关1215、一个或多个天线1216、总线1217、电池1218以及辅助控制器1219。
处理器1201可以为例如CPU或片上系统(SoC)，并且控制智能电话1200的应用层和另外层的功能。存储器1202包括RAM和ROM，并且存储数据和由处理器1201执行的程序。存储装置1203可以包括存储介质，诸如半导体存储器和硬盘。外部连接接口1204为用于将外部装置(诸如存储卡和通用串行总线(USB)装置)连接至智能电话1200的接口。
摄像装置1206包括图像传感器(诸如电荷耦合器件(CCD)和互补金属氧化物半导体(CMOS))，并且生成捕获图像。传感器1207可以包括一组传感器，诸如测量传感器、陀螺仪传感器、地磁传感器和加速度传感器。麦克风1208将输入到智能电话1200的声音转换为音频信号。输入装置1209包括例如被配置为检测显示装置1210的屏幕上的触摸的触摸传感器、小键盘、键盘、按钮或开关，并且接收从用户输入的操作或信息。 显示装置1210包括屏幕(诸如液晶显示器(LCD)和有机发光二极管(OLED)显示器)，并且显示智能电话1200的输出图像。扬声器1211将从智能电话1200输出的音频信号转换为声音。
无线通信接口1212支持任何蜂窝通信方案(诸如LTE和LTE-先进)，并且执行无线通信。无线通信接口1212通常可以包括例如BB处理器1213和RF电路1214。BB处理器1213可以执行例如编码/解码、调制/解调以及复用/解复用，并且执行用于无线通信的各种类型的信号处理。同时，RF电路1214可以包括例如混频器、滤波器和放大器，并且经由天线1216来传送和接收无线信号。无线通信接口1212可以为其上集成有BB处理器1213和RF电路1214的一个芯片模块。如图26所示，无线通信接口1212可以包括多个BB处理器1213和多个RF电路1214。虽然图26示出其中无线通信接口1212包括多个BB处理器1213和多个RF电路1214的示例，但是无线通信接口1212也可以包括单个BB处理器1213或单个RF电路1214。
此外，除了蜂窝通信方案之外，无线通信接口1212可以支持另外类型的无线通信方案，诸如短距离无线通信方案、近场通信方案和无线局域网(LAN)方案。在此情况下，无线通信接口1212可以包括针对每种无线通信方案的BB处理器1213和RF电路1214。
天线开关1215中的每一个在包括在无线通信接口1212中的多个电路(例如用于不同的无线通信方案的电路)之间切换天线1216的连接目的地。
天线1216中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件)，并且用于无线通信接口1212传送和接收无线信号。如图26所示，智能电话1200可以包括多个天线1216。虽然图26示出其中智能电话1200包括多个天线1216的示例，但是智能电话1200也可以包括单个天线1216。
此外，智能电话1200可以包括针对每种无线通信方案的天线1216。在此情况下，天线开关1215可以从智能电话1200的配置中省略。
总线1217将处理器1201、存储器1202、存储装置1203、外部连接接口1204、摄像装置1206、传感器1207、麦克风1208、输入装置1209、显示装置1210、扬声器1211、无线通信接口1212以及辅助控制器1219彼此连接。电池1218经由馈线向图26所示的智能电话1200的各个块提 供电力，馈线在图中被部分地示为虚线。辅助控制器1219例如在睡眠模式下操作智能电话1200的最小必需功能。
在图26所示的智能电话1200中，通过使用图21所描述的处理电路610以及其中的获取单元611和提取单元612可以由处理器1201或辅助控制器1219实现，并且通过使用图21所描述的通信单元630可以由无线通信接口1212实现。功能的至少一部分也可以由处理器1201或辅助控制器1219实现。例如，处理器1201或辅助控制器1219可以通过执行存储器1202或存储装置1203中存储的指令而执行信息获取功能和信息提取功能。
图27是示出可以应用本公开的技术的汽车导航设备1320的示意性配置的示例的框图。汽车导航设备1320包括处理器1321、存储器1322、全球定位系统(GPS)模块1324、传感器1325、数据接口1326、内容播放器1327、存储介质接口1328、输入装置1329、显示装置1330、扬声器1331、无线通信接口1333、一个或多个天线开关1336、一个或多个天线1337以及电池1338。
处理器1321可以为例如CPU或SoC，并且控制汽车导航设备1320的导航功能和另外的功能。存储器1322包括RAM和ROM，并且存储数据和由处理器1321执行的程序。
GPS模块1324使用从GPS卫星接收的GPS信号来测量汽车导航设备1320的位置(诸如纬度、经度和高度)。传感器1325可以包括一组传感器，诸如陀螺仪传感器、地磁传感器和空气压力传感器。数据接口1326经由未示出的终端而连接到例如车载网络1341，并且获取由车辆生成的数据(诸如车速数据)。
内容播放器1327再现存储在存储介质(诸如CD和DVD)中的内容，该存储介质被插入到存储介质接口1328中。输入装置1329包括例如被配置为检测显示装置1330的屏幕上的触摸的触摸传感器、按钮或开关，并且接收从用户输入的操作或信息。显示装置1330包括诸如LCD或OLED显示器的屏幕，并且显示导航功能的图像或再现的内容。扬声器1331输出导航功能的声音或再现的内容。
无线通信接口1333支持任何蜂窝通信方案(诸如LTE和LTE-先进)，并且执行无线通信。无线通信接口1333通常可以包括例如BB处理器1334和RF电路1335。BB处理器1334可以执行例如编码/解码、调制 /解调以及复用/解复用，并且执行用于无线通信的各种类型的信号处理。同时，RF电路1335可以包括例如混频器、滤波器和放大器，并且经由天线1337来传送和接收无线信号。无线通信接口1333还可以为其上集成有BB处理器1334和RF电路1335的一个芯片模块。如图27所示，无线通信接口1333可以包括多个BB处理器1334和多个RF电路1335。虽然图27示出其中无线通信接口1333包括多个BB处理器1334和多个RF电路1335的示例，但是无线通信接口1333也可以包括单个BB处理器1334或单个RF电路1335。
此外，除了蜂窝通信方案之外，无线通信接口1333可以支持另外类型的无线通信方案，诸如短距离无线通信方案、近场通信方案和无线LAN方案。在此情况下，针对每种无线通信方案，无线通信接口1333可以包括BB处理器1334和RF电路1335。
天线开关1336中的每一个在包括在无线通信接口1333中的多个电路(诸如用于不同的无线通信方案的电路)之间切换天线1337的连接目的地。
天线1337中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件)，并且用于无线通信接口1333传送和接收无线信号。如图27所示，汽车导航设备1320可以包括多个天线1337。虽然图27示出其中汽车导航设备1320包括多个天线1337的示例，但是汽车导航设备1320也可以包括单个天线1337。
此外，汽车导航设备1320可以包括针对每种无线通信方案的天线1337。在此情况下，天线开关1336可以从汽车导航设备1320的配置中省略。
电池1338经由馈线向图27所示的汽车导航设备1320的各个块提供电力，馈线在图中被部分地示为虚线。电池1338累积从车辆提供的电力。
在图27示出的汽车导航设备1320中，通过使用图21所描述的处理电路610以及其中的获取单元611和提取单元612可以由处理器1321实现，并且通过使用图21所描述的通信单元630可以由无线通信接口1333实现。功能的至少一部分也可以由处理器1321实现。例如，处理器1321可以通过执行存储器1322中存储的指令而执行各种测量上报功能和中继通信功能。
本公开的技术也可以被实现为包括汽车导航设备1320、车载网络 1341以及车辆模块1342中的一个或多个块的车载系统(或车辆)1340。车辆模块1342生成车辆数据(诸如车速、发动机速度和故障信息)，并且将所生成的数据输出至车载网络1341。
在本公开的系统和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行。某些步骤可以并行或彼此独立地执行。
以上虽然结合附图详细描述了本公开的实施例，但是应当明白，上面所描述的实施方式只是用于说明本公开，而并不构成对本公开的限制。对于本领域的技术人员来说，可以对上述实施方式作出各种修改和变更而没有背离本公开的实质和范围。因此，本公开的范围仅由所附的权利要求及其等效含义来限定。

Claims (32)

  1. 一种无线通信系统中的电子设备，包括：
    一个或多个处理电路，所述处理电路被配置为执行以下操作：
    配置承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的所述无线通信系统中的用户设备在非授权信道上进行的包括物理上行共享信道PUSCH传输的上行传输的上行子帧之间的时间映射信息。
  2. 根据权利要求1所述的电子设备，其中，所述处理电路进一步被配置为将所述时间映射信息添加到物理层信令或介质访问控制MAC层信令中，以通知给所述用户设备。
  3. 根据权利要求1所述的电子设备，其中，在配置所述时间映射信息时，所述处理电路将承载一个上行调度授权信令的一个下行子帧映射到承载由所述一个上行调度授权信令调度的包括PUSCH传输的上行传输的多个上行子帧。
  4. 根据权利要求1所述的电子设备，其中，所述下行子帧承载多个上行调度授权信令，并且所述处理电路进一步被配置为执行以下操作：
    配置承载所述多个上行调度授权信令中的每一个的下行子帧和承载由所述多个上行调度授权信令中的所述每一个调度的包括PUSCH传输的上行传输的一个上行子帧之间的每个时间映射信息。
  5. 根据权利要求1所述的电子设备，其中，所述处理电路进一步被配置为执行以下操作：
    将一个上行调度授权信令设置成能够调度在承载下一个上行调度授权信令的下一个下行子帧之前的全部上行子帧所承载的包括PUSCH传输的上行传输；以及
    配置承载所述一个上行调度授权信令的下行子帧和实际承载由所述一个上行调度授权信令调度的包括PUSCH传输的上行传输的上行子帧之间的实际时间映射信息。
  6. 根据权利要求1所述的电子设备，其中，所述处理电路进一步被配置为执行以下操作：
    生成关于所述用户设备在所述非授权信道上进行包括PUSCH传输的上行传输之前执行信道检测过程的信道检测类型的配置信息。
  7. 根据权利要求6所述的电子设备，其中，在生成所述配置信息时，所述处理电路进一步被配置为执行以下操作：
    将所述非授权信道上的多个非授权载波设置成彼此独立；以及
    针对所述多个非授权载波中的每一个，
    当承载包括所述PUSCH传输的上行传输的上行子帧落在所述无线通信系统中的基站端的信道检测成功之后的最大信道占用时间MCOT之内时，将所述信道检测类型配置为第一信道检测过程；以及
    当承载所述PUSCH传输的上行子帧落在所述MCOT之外时，将所述信道检测类型配置为第二信道检测过程。
  8. 根据权利要求6所述的电子设备，其中，在生成所述配置信息时，所述处理电路进一步被配置为执行以下操作：
    将所述非授权信道上的多个非授权载波中的一个设置成主要信道，并且将其它非授权载波设置成次要信道；
    将针对所述次要信道的信道检测类型配置为第一信道检测过程；以及
    针对所述主要信道，
    当承载包括所述PUSCH传输的上行传输的上行子帧落在所述无线通信系统中的基站端的信道检测成功之后的最大信道占用时间MCOT之内时，将所述信道检测类型配置为第一信道检测过程；以及
    当承载所述PUSCH传输的上行子帧落在所述MCOT之外时，将所述信道检测类型配置为第二信道检测过程。
  9. 根据权利要求7或8所述的电子设备，其中，所述处理电路对下行控制信息DCI format 1C进行重用，以将生成的配置信息添加到物理层信令中。
  10. 根据权利要求6所述的电子设备，其中，所述处理电路生成子帧边界信息作为所述配置信息，所述子帧边界信息指示落在所述无线通信系统中的基站端的信道检测成功之后的最大信道占用时间MCOT之内的最后一个子帧。
  11. 根据权利要求7或8所述的电子设备，其中，所述第一信道检测 过程为不包含随机退避的能量检测过程。
  12. 根据权利要求7或8所述的电子设备，其中，所述第二信道检测过程为包含随机退避且竞争窗口大小可变的能量检测过程。
  13. 根据权利要求1或6所述的电子设备，其中，所述处理电路进一步被配置为执行以下操作：
    为所述非授权信道上的非授权载波配置信道检测参数；以及
    将配置的信道检测参数添加到物理层或介质访问控制MAC层信令中，以通知给所述用户设备。
  14. 根据权利要求13所述的电子设备，其中，基于在先的由同一上行调度授权信令调度的PUSCH传输的结果，所述处理电路为所述非授权载波配置所述用户设备进行由所述同一上行调度授权信令调度的包括PUSCH传输的上行传输之前执行信道检测过程时使用的信道检测参数。
  15. 根据权利要求13所述的电子设备，其中，基于在先的由同一下行子帧承载的上行调度授权信令调度的PUSCH传输的结果，所述处理电路为所述非授权载波配置所述用户设备进行由所述同一下行子帧承载的上行调度授权信令调度的包括PUSCH传输的上行传输之前执行信道检测过程时使用的信道检测参数。
  16. 根据权利要求13所述的电子设备，其中，所述信道检测参数是在包含随机退避且竞争窗口大小可变的能量检测过程中使用的竞争窗口大小。
  17. 根据权利要求1至16中任一项所述的电子设备，其中，所述无线通信系统为授权辅助接入LAA系统，并且所述电子设备为基站，并且还包括收发机，所述收发机被配置为与所述用户设备进行无线通信。
  18. 一种无线通信系统中的电子设备，包括：
    一个或多个处理电路，所述处理电路被配置为执行以下操作：
    获取来自所述无线通信系统中的基站的下行信令；以及
    从所述下行信令中提取承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的在非授权信道上进行的包括物理上行共享信道PUSCH传输的上行传输的上行子帧之间的时间映射信息。
  19. 根据权利要求18所述的电子设备，其中，所述处理电路在执行 所述操作时：
    获取一个上行调度授权信令；以及
    从所述一个上行调度授权信令中提取承载所述一个上行调度授权信令的一个下行子帧和承载由所述一个上行调度授权信令调度的包括PUSCH传输的上行传输的多个上行子帧之间的时间映射信息。
  20. 根据权利要求18所述的电子设备，其中，所述处理电路在执行所述操作时：
    获取由同一下行子帧承载的多个上行调度授权信令；以及
    从所述多个上行调度授权信令中的每一个中提取所述同一下行子帧和承载由所述多个上行调度授权信令中的所述每一个调度的包括PUSCH传输的上行传输的一个上行子帧之间的每个时间映射信息。
  21. 根据权利要求18所述的电子设备，其中，所述处理电路确定一个上行调度授权信令能够调度在承载下一个上行调度授权信令的下一个下行子帧之前的全部上行子帧所承载的PUSCH传输，并且从下行信令中提取承载所述一个上行调度授权信令的下行子帧和实际承载由所述一个上行调度授权信令调度的包括PUSCH传输的上行传输的上行子帧之间的实际时间映射信息作为所述时间映射信息。
  22. 根据权利要求18所述的电子设备，其中，所述处理电路进一步被配置为执行以下操作：
    基于所述时间映射信息，生成在所述非授权信道上进行包括PUSCH传输的上行传输的指令。
  23. 根据权利要求18所述的电子设备，其中，所述处理电路进一步被配置为执行以下操作：
    从所述下行信令中提取关于在所述非授权信道上进行包括PUSCH传输的上行传输之前执行信道检测过程的信道检测类型的配置信息。
  24. 根据权利要求23所述的电子设备，其中，所述处理电路从重用的下行控制信息DCI format 1C中提取所述配置信息。
  25. 根据权利要求23所述的电子设备，其中，所述处理电路获取子帧边界信息作为所述配置信息，所述子帧边界信息指示落在所述无线通信系统中的基站端的信道检测成功之后的最大信道占用时间MCOT之内的最后一个子帧。
  26. 根据权利要求23所述的电子设备，其中，所述处理电路进一步被配置为执行以下操作：
    基于所述配置信息，生成在所述非授权信道上进行包括PUSCH传输的上行传输之前执行第一信道检测过程或第二信道检测过程的指令，
    其中，所述第一信道检测过程为不包含随机退避的能量检测过程，并且所述第二信道检测过程为包含随机退避且竞争窗口大小可变的能量检测过程。
  27. 根据权利要求18或23所述的电子设备，其中，所述处理电路进一步被配置为执行以下操作：
    从所述下行信令中提取信道检测参数；以及
    基于提取的信道检测参数，为所述非授权信道上的非授权载波配置信道检测参数。
  28. 根据权利要求27所述的电子设备，其中，所述信道检测参数是在包含随机退避且竞争窗口大小可变的能量检测过程中使用的竞争窗口大小。
  29. 根据权利要求18至28中任一项所述的电子设备，其中，所述无线通信系统为授权辅助接入LAA系统，并且所述电子设备为用户设备，并且还包括收发机，所述收发机被配置为与所述基站进行无线通信。
  30. 一种无线通信系统，包括基站和用户设备，其中，
    所述基站包括：
    第一收发机；以及
    一个或多个第一处理电路，所述第一处理电路被配置为执行以下操作：
    配置承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的所述用户设备在非授权信道上进行的包括物理上行共享信道PUSCH传输的上行传输的上行子帧之间的时间映射信息；以及
    使所述第一收发机将所述时间映射信息通知给所述用户设备，并且
    所述用户设备包括：
    第二收发机；以及
    一个或多个第二处理电路，所述第二处理电路被配置为执行以下操 作：
    通过所述第二收发机获取来自所述基站的下行信令；以及
    从所述下行信令中提取所述时间映射信息。
  31. 一种用于在无线通信系统中进行无线通信的方法，包括：
    配置承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的所述无线通信系统中的用户设备在非授权信道上进行的包括物理上行共享信道PUSCH传输的上行传输的上行子帧之间的时间映射信息；以及
    将所述时间映射信息通知给所述用户设备。
  32. 一种用于在无线通信系统中进行无线通信的方法，包括：
    获取来自所述无线通信系统中的基站的下行信令；以及
    从所述下行信令中提取承载上行调度授权信令的下行子帧和承载由所述上行调度授权信令调度的在非授权信道上进行的包括物理上行共享信道PUSCH传输的上行传输的上行子帧之间的时间映射信息。
PCT/CN2017/076930 2016-04-01 2017-03-16 无线通信系统中的电子设备和无线通信方法 WO2017167024A1 (zh)

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