WO2022194216A1 - Procédé et dispositif de détermination d'informations - Google Patents

Procédé et dispositif de détermination d'informations Download PDF

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Publication number
WO2022194216A1
WO2022194216A1 PCT/CN2022/081217 CN2022081217W WO2022194216A1 WO 2022194216 A1 WO2022194216 A1 WO 2022194216A1 CN 2022081217 W CN2022081217 W CN 2022081217W WO 2022194216 A1 WO2022194216 A1 WO 2022194216A1
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WIPO (PCT)
Prior art keywords
information
lbt
auxiliary information
dci
channel
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PCT/CN2022/081217
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English (en)
Chinese (zh)
Inventor
姜蕾
李�根
邬华明
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维沃移动通信有限公司
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Publication of WO2022194216A1 publication Critical patent/WO2022194216A1/fr

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    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • 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
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • 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]

Definitions

  • the present application belongs to the field of communication technologies, and specifically relates to an information determination method and device, the device includes an information determination device, a terminal, and the like.
  • Unlicensed frequency bands are shared by a variety of technologies (RATs). Therefore, the use of unlicensed frequency bands must comply with some rules, such as Listen Before Talk (LBT), Maximum Channel Occupancy Time (MCOT) etc. to ensure that all communication nodes can use the resource fairly.
  • LBT Listen Before Talk
  • MCOT Maximum Channel Occupancy Time
  • next generation Node-B1 (Next Generation Node-B1, gNB1) performs LBT before sending data and detects that the channel is empty, so gNB1 sends data to user terminal 1 (User Equipment 1, UE1), and UE1 receives it. data.
  • UE2 User Equipment 2
  • UE2 performs LBT. Because gNB1 is far away from UE2, UE1 is in the receiving state, so UE2 detects that the channel is empty, and UE2 starts to send data. However, due to the close distance between UE2 and UE1, UE1 can receive the data sent by UE2.
  • UE2 can be called a hidden node of UE1, and UE1 receiving data from gNB1 will be interfered by the hidden node (UE2).
  • the embodiments of the present application provide an information determination method and device, which can solve the interference problem of hidden nodes.
  • a method for determining information includes: acquiring first information by a terminal; and determining, by the terminal, whether to perform LBT and/or feeding back auxiliary information according to the first information.
  • a method for determining information includes: a network-side device sends first information, where the first information is used to indicate whether a terminal performs LBT and/or feeds back auxiliary information; after receiving the terminal In the case of feedback auxiliary information, the information is sent to the terminal.
  • an apparatus for determining information comprising: an acquisition module for acquiring first information; and a processing module for determining whether to perform LBT and/or feedback auxiliary information according to the first information.
  • an apparatus for determining information comprising: a sending module configured to send first information, where the first information is used to indicate whether the terminal performs LBT and/or feeds back auxiliary information; the sending module further uses In the case of receiving the auxiliary information fed back by the terminal, the information is sent to the terminal.
  • a terminal in a fifth aspect, includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, when the program or instruction is executed by the processor A method as described in the first aspect is implemented.
  • a network side device in a sixth aspect, includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the The processor implements the method as described in the second aspect when executed.
  • a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the method as described in the first aspect or the implementation as in the second aspect is implemented the method described.
  • a computer program product comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the When executed by the processor, the method described in the first aspect or the method described in the second aspect is realized.
  • a chip in a ninth aspect, includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the method according to the first aspect Or implement the method as described in the second aspect.
  • whether the terminal performs LBT and/or whether to feed back auxiliary information is triggered by the first information, and the network side device sends information to the terminal only after receiving the auxiliary information fed back by the terminal to avoid interference from hidden nodes.
  • the solution of triggering whether the terminal performs LBT and/or whether to feed back auxiliary information through the first information is easy to implement, and at the same time, the complexity of detecting the first information by the terminal is reduced, and it is convenient to reduce the power consumption of the terminal.
  • FIG. 1 is a schematic diagram of a hidden node in the prior art
  • FIG. 2 is a schematic diagram of a wireless communication system according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of an information determination method according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of an information determination method according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of an apparatus for determining information according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of an information determination apparatus according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a network side device according to an embodiment of the present application.
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first”, “second” distinguishes Usually it is a class, and the number of objects is not limited.
  • the first object may be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution-Advanced
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
  • NR New Radio
  • the following description describes a New Radio (NR) system for example purposes, and uses NR terminology in most of the following description, these techniques can also be applied to applications other than NR system applications, such as the 6th Generation (6th Generation , 6G) Communication system.
  • 6th Generation 6th Generation
  • FIG. 2 shows a schematic diagram of a wireless communication system to which an embodiment of the present application can be applied.
  • the wireless communication system includes a terminal 11 and a network-side device 12 .
  • the terminal 11 may also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a mobile phone, a tablet computer (Tablet Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), PDA, netbook, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), mobile Internet Device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device ( VUE), pedestrian terminal (PUE) and other terminal-side devices, wearable devices include: bracelets, earphones, glasses, etc.
  • the network side device 12 may be a base station or a core network, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a basic service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Next Generation Node B (gNB), Home Node B, Home Evolved Node B, WLAN Access point, WiFi node, Transmitting Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. In the application embodiments, only the base station in the NR system is used as an example, but the specific type of the base station is not limited.
  • An embodiment of the present application provides a method for determining information, the method is performed by a receiving end, and the method includes the following steps: receiving first information sent by a sending end; the first information is information supported by both the sending end and the receiving end; information determines whether to perform LBT and/or feed back auxiliary information.
  • the method at the sending end includes: sending first information, where the first information is used to indicate whether the receiving end performs LBT and/or feeds back auxiliary information; and when receiving the auxiliary information fed back by the receiving end, sending the information to the receiving end.
  • the transmitting end sends information to the receiving end only after receiving the auxiliary information fed back by the receiving end, so as to avoid interference of hidden nodes.
  • an embodiment of the present application provides a method 300 for determining information.
  • the method can be executed by a terminal.
  • the method can be executed by software or hardware installed in the terminal.
  • the method includes the following steps.
  • S302 The terminal acquires the first information.
  • the embodiments of the present application may be applied to scenarios of unlicensed frequency bands (or shared spectrum), and the first information may be information that has been defined or used in NR related technologies, or may be implemented with minor changes to existing protocols.
  • Information for example, the first information is a media access control control unit (Media Access Control-Control Element, MAC CE) or downlink control information (Downlink Control Information, DCI) and other signaling, such as a specific DCI format (DCI format), etc. .
  • the network-side device may also configure the terminal, and use the DCI format to trigger the terminal whether to perform Listen Before Talk (LBT) and/or whether to feed back auxiliary information , this example does not need to change the protocol; alternatively, the DCI format may also be newly defined by the protocol, which is used to trigger whether the terminal performs LBT and/or whether to feed back auxiliary information, and the changes to the protocol are minor.
  • LBT Listen Before Talk
  • auxiliary information this example does not need to change the protocol
  • the DCI format may also be newly defined by the protocol, which is used to trigger whether the terminal performs LBT and/or whether to feed back auxiliary information, and the changes to the protocol are minor.
  • the first information may be used to trigger whether the terminal performs LBT and/or whether to feed back auxiliary information, and the like.
  • the first information includes at least one of the following: a field (field) in the DCI, an indication value of the field in the DCI, a radio network temporary identity (Radio Network Temporary Identity, RNTI) that scrambles the DCI, a DCI format, a search Space set (search space set), search space set grouping, downlink channel, downlink signal, channel occupied time information.
  • RNTI Radio Network Temporary Identity
  • S302 can also obtain the first information through different ways.
  • the terminal in S302 can receive the downlink channel or signal;
  • the terminal can detect the DCI format in S302; and so on.
  • S304 The terminal determines whether to perform LBT and/or feed back auxiliary information according to the first information.
  • This embodiment may determine whether to perform LBT according to the first information; or determine whether to feed back auxiliary information according to the first information; or determine whether to perform LBT and whether to feed back auxiliary information according to the first information.
  • the first information includes a DCI format
  • LBT is performed and/or the auxiliary information is fed back; otherwise, if the received DCI format is not in the first format In this case, LBT is not performed and no auxiliary information is fed back.
  • LBT is not performed and the assistance information is not fed back; on the contrary, in the case where the format of the received DCI is not the second format, LBT and/or feedback assistance is performed information.
  • Performing LBT and/or feeding back auxiliary information mentioned in the various embodiments of the present application may include one of the following: 1) performing LBT, and feeding back auxiliary information when the listening result of the channel is idle; 2) not performing LBT, directly Feedback auxiliary information.
  • the auxiliary information mentioned in the various embodiments of the present application may include at least one of the following: 1) the listening result of the channel, that is, the busy/idle state of the channel; 2) the channel state information (Channel State Information, CSI) report.
  • the channel mentioned in 1) above includes multiple sub-channels; wherein, the listening result of the channel includes the listening result of each sub-channel in the multiple sub-channels, that is, the free/idle status of each sub-channel state.
  • the first information is used to trigger whether the terminal performs LBT and/or whether to feed back auxiliary information.
  • the network side device only sends information to the terminal after receiving the auxiliary information fed back by the terminal to avoid interference from hidden nodes.
  • the solution of triggering whether the terminal performs LBT and/or whether to feed back auxiliary information through the first information is easy to implement, and at the same time, the complexity of detecting the first information by the terminal is reduced, and it is convenient to reduce the power consumption of the terminal.
  • the existing first information can be used to trigger the terminal to perform LBT and/or feed back auxiliary information , reducing the impact on the protocol, reducing the complexity of terminal detection, and saving terminal power consumption.
  • RTS/CTS Request To Send/Clear To Send
  • the source node sends RTS before data transmission.
  • the RTS carries the network allocation vector (NAV) value and the address of the destination node, indicating how long the node will occupy the channel. Nodes that receive this RTS will not attempt data transmission within the NAV time.
  • the destination node replies with a CTS, which carries the NAV value and the address of the source node.
  • a node that receives a CTS will not attempt to transmit within the NAV time. This avoids the hidden node problem around the destination node.
  • the information fed back by the destination node such as the above CTS, may be called receiver assisted information.
  • the New Radio (NR) protocol does not support instructing the terminal to send auxiliary information. Therefore, the above RTS/CTS signaling cannot be directly applied to the NR protocol.
  • One of the technical means available for NR is to introduce new channels and signaling to trigger terminals to send auxiliary information, such as RTS-Physical Downlink Control Channel (PDCCH).
  • PDCCH Physical Downlink Control Channel
  • the network side device can use the first information as a transmission request (Request To Send, RTS), and the terminal can use the feedback auxiliary information as a transmission confirmation (Clear To Send, CTS), so as to solve the hidden node interference in the related art
  • RTS Transmission Request To Send
  • CTS Transmission confirmation
  • the modification to the existing protocol is small, and the design scheme that does not require new channels and signaling is easy to implement, and the complexity of detecting the first information by the terminal is reduced, which is convenient for reducing the power consumption of the terminal.
  • the application scenarios of the embodiments of the present application are not limited to this, and can also be applied to other scenarios that require the terminal to assist the network side device in channel access and transmission.
  • the first information includes at least one of the following: a field in the DCI, an indication value of the field in the DCI, an RNTI for scrambled DCI, a DCI format, a search space set, a search space set grouping, a downlink channel, Downlink signals, channel occupancy time information, etc., the following describes the information determination method provided by the embodiment of the present application in detail with respect to the above-mentioned different first information.
  • the first information includes fields in the DCI. Determining whether to perform LBT and/or feeding back auxiliary information according to the first information mentioned in Embodiment 300 includes at least one of the following.
  • determining whether to perform LBT and/or feeding back auxiliary information according to the first information mentioned in Embodiment 300 may further include at least one of the following.
  • the above-mentioned first field includes a channel state information request (CSI request) field
  • the CSI request field can not only be used to trigger the terminal to perform an aperiodic (AP) channel state information reference signal (Channel State Information-Reference Signal, CSI) -RS) measurement and reporting; at the same time, it can be used to trigger the terminal to perform LBT and/or feedback auxiliary information.
  • CSI request channel state information request
  • AP aperiodic
  • CSI Channel State Information-Reference Signal
  • an existing indication field (the first field) can be fully utilized to trigger whether the terminal performs LBT and/or whether to feed back auxiliary information, so as to save signaling overhead.
  • the first information includes an indication value of a field in the DCI. Determining whether to perform LBT and/or feeding back auxiliary information according to the first information mentioned in Embodiment 300 includes at least one of the following.
  • first value of 1 and second value of 0 are only for exemplary illustration, and the first value of 0 and the second value of 1 are also one of the implementation manners of the second solution.
  • the second field in the DCI may be used to indicate whether the terminal performs LBT and/or feeds back auxiliary information.
  • the second field may use a reserved field in the DCI, or may be a newly defined indication field.
  • the second field in the DCI of the above 1) and 2) can be specially used to indicate whether the terminal performs LBT and/or feedback auxiliary information, and is not used for other purposes, reducing the complexity of the terminal implementation. .
  • the multiple domains may be the first domain and other domains, or the multiple domains may also be the second domain and other domains, or the multiple domains may also be multiple other domains.
  • the time domain resource assignment (Time Domain Resource Assignment, TDRA), the frequency domain resource assignment (Frequency Domain Resource Assignment, FDRA), the modulation and coding strategy (Modulation and Coding strategy) in the terminal-specific (UE-specific) DCI
  • At least two of the fields such as Scheme, MCS), redundancy version (Redundancy Version, RV), and HARQ process number (HARQ process number) are set to all 0 or all 1, respectively, to trigger the terminal to do LBT and/or feedback assistance information.
  • the first information includes the RNTI of the scrambled DCI. Determining whether to perform LBT and/or feeding back auxiliary information according to the first information mentioned in Embodiment 300 includes at least one of the following.
  • the first RNTI in this embodiment includes, for example, an RTS-RNTI.
  • the terminal may further receive first configuration information, where the first configuration information is used to configure the first RNTI for the terminal.
  • the first information includes the DCI format. Determining whether to perform LBT and/or feeding back auxiliary information according to the first information mentioned in Embodiment 300 includes at least one of the following.
  • determining whether to perform LBT and/or feeding back auxiliary information according to the first information mentioned in Embodiment 300 includes at least one of the following.
  • the specific first format may be an existing DCI format or a newly introduced DCI format. If there is an existing DCI format, in addition to performing the behavior indicated by the existing DCI format, the terminal also needs to perform additional LBT and/or feedback auxiliary information.
  • the terminal may further receive second configuration information, where the second configuration information is used to configure DCI in the first format and the like for the terminal.
  • the first information includes a search space set or a search space set grouping. Determining whether to perform LBT and/or feeding back auxiliary information according to the first information mentioned in Embodiment 300 includes at least one of the following.
  • determining whether to perform LBT and/or feeding back auxiliary information according to the first information mentioned in Embodiment 300 includes at least one of the following.
  • the first information includes downlink channels or downlink signals. Determining whether to perform LBT and/or feeding back auxiliary information according to the first information mentioned in Embodiment 300 includes: performing LBT and/or feeding back auxiliary information when a downlink channel or downlink signal is received.
  • the first information includes channel occupation time information, and the first information further includes: a downlink channel or a downlink signal.
  • Determining whether to perform LBT and/or feeding back auxiliary information according to the first information mentioned in Embodiment 300 includes: in the case of receiving a downlink channel or downlink signal and receiving channel occupancy time information, not performing LBT and not feeding back the auxiliary information information.
  • a specific RNTI can be used to scramble the DCI to instruct a terminal (eg, UE) to perform LBT and/or feed back auxiliary information.
  • a terminal eg, UE
  • the UE is triggered to perform LBT and/or feed back auxiliary information. If the DCI detected by the UE is scrambled by an RNTI other than the RTS-RNTI, it means that the UE does not need to feed back auxiliary information and does not need to perform LBT.
  • a specific DCI format may be used to instruct the UE to perform LBT and/or feed back auxiliary information. Once the UE detects the specific DCI format, it starts to do LBT and/or feed back auxiliary information.
  • the specific DCI format may be an existing DCI format or a newly introduced DCI format. If there is an existing DCI format, in addition to performing the behavior indicated by the existing DCI format, the UE additionally performs LBT and/or feeds back auxiliary information.
  • the UE When the UE performs LBT and/or feeds back auxiliary information, it means that the UE can perform LBT first, and feed back the auxiliary information when the channel is empty. It is also possible to directly feed back auxiliary information without performing LBT, and the following embodiments are similar.
  • a dedicated field is used in the existing DCI to indicate whether the UE needs to perform LBT and/or feedback auxiliary information.
  • a field in the DCI that triggers one or more aperiodic CSI reports can be simultaneously used to trigger the UE to do LBT and/or feed back auxiliary information.
  • the UE receives the DCI including the CSI request field, in addition to triggering AP CSI-RS measurement and reporting, it also performs LBT and/or feedback auxiliary information after receiving the CSI request field.
  • the above-mentioned dedicated domain can be configured through radio resource control (Radio Resource Control, RRC).
  • RRC Radio Resource Control
  • the RRC configures the dedicated domain, there are corresponding bits in the DCI. If the RRC does not configure the dedicated field, there is no corresponding bit in the DCI.
  • this field indicates whether the UE needs to do LBT and/or feed back auxiliary information.
  • the bit value of this field is 1, it indicates that the UE needs to perform LBT and/or feedback auxiliary information.
  • the bit value of this field is 0, it indicates that the UE does not need to feed back auxiliary information (and therefore does not need to do LBT).
  • the reserved field can be a field reserved when any parameter in the existing DCI is invalid, such as a new data indicator field or a HARQ process number field when DCI 0_0 is scrambled by TC-RNTI; or a padding bit (paddingbits), a part of reserved bits (reserved bits).
  • the UE is triggered to do LBT and/or feed back auxiliary information by setting specific values to certain fields in the existing DCI. For example, at least one of the TDRA, FDRA, MCS, RV, HARQ process number and other fields in the UE-specific DCI is set to be all 0 or all 1, respectively, to trigger the UE to perform LBT and/or feed back auxiliary information.
  • At least one of the fields such as Slot Format Indicator (SFI), Available Resource Block Set Indicator (Available RB set Indicator), and Channel Occupancy Time Period Indicator (COT duration indicator) can be set to a specific value .
  • SFI Slot Format Indicator
  • Available RB set Indicator Available Resource Block Set Indicator
  • COT duration indicator Channel Occupancy Time Period Indicator
  • the UE interprets the DCI set with a special value as triggering the UE to perform LBT and/or feed back auxiliary information.
  • a specific value may also be set for the Search space set group switching flag in DCI 2_0. For example, when the value of the Search space set group switching flag is 1, the UE is triggered to perform LBT and/or feed back auxiliary information. When the Search space set group switching flag is set to 0, the UE does not need to feed back auxiliary information.
  • the search space set is displayed as configured for RTS transmission or if certain conditions are met, for example, the RTS payload size (payload size) is configured, and after the PDCCH is detected in the search space set, the UE is triggered to perform LBT and/or feedback auxiliary information.
  • the search space set is divided into at least two groups, and the UE will receive the group index (group index) corresponding to each search space set.
  • group index group index
  • the UE detects the PDCCH corresponding to the search space set of a specific group number, the UE is triggered to perform LBT and/or feed back auxiliary information.
  • the UE divide the search space set into two groups.
  • the UE detects the PDCCH corresponding to the search space set group0
  • the UE performs LBT and/or feeds back auxiliary information.
  • the UE switches to detecting the PDCCH corresponding to the search space set group1.
  • the UE detects the PDCCH corresponding to the search space set group1
  • the UE does not feed back auxiliary information (and therefore does not need to do LBT).
  • the UE can switch to monitor the PDCCH corresponding to the search space set group0.
  • the UE may jointly determine whether to perform LBT and/or feed back auxiliary information by detecting any downlink signal and channel occupancy time information (or remaining channel occupancy time).
  • the gNB indicates that the UE needs to feed back auxiliary information
  • the UE detects a downlink signal for the first time after a COT (gNB or COT initiated by the UE) ends, the UE is triggered to perform LBT and/or feed back the auxiliary information. If the downlink signal detected by the UE contains the channel occupation time information; or the detected downlink signal does not contain the channel occupation time, but the UE subsequently detects the channel occupation time indication, the UE stops feeding back the auxiliary information (so it does not need to do LBT) .
  • the gNB can explicitly indicate that the UE needs to feed back auxiliary information through broadcast signaling, RRC signaling, etc.; or implicitly indicate through other information, for example, when the UE works in a specific frequency band, the auxiliary information needs to be fed back.
  • the auxiliary information fed back by the UE may include a result of the UE listening to the channel. If there is only one LBT bandwidth (LBT bandwidth), the UE can feed back an ACK indicating that the channel is empty. If the channel has a large bandwidth and contains multiple LBT bandwidths, it needs to listen on multiple LBT bandwidths, and the UE can feed back the listening results of multiple channels.
  • the busy/idle status of each LBT bandwidth needs to be fed back, and the number of bits of feedback information depends on the number of LBT bandwidths. Each bit corresponds to the channel state of one LBT bandwidth. A bit value of 1 indicates an acknowledgment (ACK), or the channel of the LBT is empty, and a bit value of 0 indicates a negation (NACK), or the channel of the LBT is busy.
  • the LBT bandwidth here can also be called resource block set (RB set), subband (subband), subchannel (subchannel), etc., which can be the bandwidth used for one LBT.
  • RB set resource block set
  • subband subband
  • subchannel subchannel
  • auxiliary information fed back by the UE may also include other measurement reports such as the aperiodic CSI report in the second embodiment.
  • the execution subject may be an information determination apparatus, or a control module in the information determination apparatus for executing the information determination method.
  • the information determining device provided by the embodiments of the present application is described by taking the information determining device executing the information determining method as an example.
  • the information determination method according to the embodiment of the present application has been described in detail above with reference to FIG. 3 and the like.
  • a method for determining information according to another embodiment of the present application will be described in detail below with reference to FIG. 4 . It can be understood that the interaction between the network side device and the terminal described from the network side device is the same as the description on the terminal side in the method shown in FIG. 3 , and related descriptions are appropriately omitted to avoid repetition.
  • FIG. 4 is a schematic diagram of an implementation flowchart of an information determination method according to an embodiment of the present application, which may be applied to a network side device. As shown in FIG. 4 , the method 400 includes the following steps.
  • the network side device sends first information, where the first information is used to indicate whether the terminal performs LBT and/or feeds back auxiliary information.
  • whether the terminal performs LBT and/or whether to feed back auxiliary information is triggered by the first information, and the network side device sends information to the terminal only after receiving the auxiliary information fed back by the terminal to avoid interference from hidden nodes.
  • the solution of triggering whether the terminal performs LBT and/or whether to feed back auxiliary information through the first information is easy to implement, and at the same time, the complexity of detecting the first information by the terminal is reduced, and it is convenient to reduce the power consumption of the terminal.
  • FIG. 5 is a schematic structural diagram of an apparatus for determining information according to an embodiment of the present application, and the apparatus may correspond to terminals in other embodiments. As shown in FIG. 5 , the apparatus 500 includes the following modules.
  • the obtaining module 502 can be used to obtain the first information.
  • the processing module 504 may be configured to determine whether to perform LBT and/or feed back auxiliary information according to the first information.
  • the first information is used to trigger the information to determine whether the apparatus performs LBT and/or whether to feed back auxiliary information.
  • the network side device sends information to the terminal only after receiving the auxiliary information fed back by the terminal to avoid interference from hidden nodes.
  • the solution of triggering whether the terminal performs LBT and/or whether to feed back auxiliary information through the first information is easy to implement, and at the same time, the complexity of detecting the first information by the terminal is reduced, and it is convenient to reduce the power consumption of the terminal.
  • the first information includes at least one of the following: a field in the DCI, an indication value of the field in the DCI, an RNTI for scrambled DCI, a DCI format, a search space set, and a search space set grouping , downlink channel, downlink line number, channel occupation time information.
  • the first information includes a domain in the DCI
  • the processing module 504 is configured to at least one of the following: in the case that the DCI includes the first domain, perform LBT and/or Feedback auxiliary information; if the DCI does not include the first field, LBT is not performed and auxiliary information is not fed back.
  • the first information includes an indication value of a field in the DCI
  • the processing module 504 is configured to at least one of the following: when the second field of the DCI is the first value under the condition that LBT is performed and/or auxiliary information is fed back; when the second field of the DCI is a second value, LBT is not performed and the auxiliary information is not fed back; when multiple fields of the DCI are specific values or specific values In the case of a combination of , LBT is performed and/or auxiliary information is fed back; when multiple fields of the DCI are not specific values or a combination of specific values, LBT is not performed and the auxiliary information is not fed back.
  • the first information includes the RNTI that scrambles the DCI
  • the processing module 504 is configured to at least one of the following: in the case that the DCI is scrambled by the first RNTI, perform LBT and/or feedback auxiliary information; in case the DCI is not scrambled by the first RNTI, LBT is not performed and auxiliary information is not fed back.
  • the first information includes a DCI format
  • the processing module 504 is configured to at least one of the following: when the received DCI format is the first format, perform LBT and/or Or feed back the auxiliary information; if the format of the received DCI is not the first format, LBT is not performed and the auxiliary information is not fed back.
  • the first information includes a search space set or a search space set group
  • the processing module 504 is configured to at least one of the following: after detecting the first search space set and/or the specified grouping In the case of the search space set of , LBT is performed and/or auxiliary information is fed back; when the first search space set or the search space set of the specified group is not detected, LBT is not performed and the auxiliary information is not fed back.
  • the first information includes a downlink channel or a downlink signal
  • the processing module 504 is configured to: perform LBT and/or feed back auxiliary information when the downlink channel or downlink signal is received .
  • the first information includes channel occupation time information
  • the first information further includes: a downlink channel or a downlink signal
  • the processing module 504 is configured to: after receiving the downlink channel or downlink signal, the processing module 504 is configured to: When the downlink signal is received and the channel occupation time information is received, LBT is not performed and auxiliary information is not fed back.
  • the performing LBT and/or feeding back the auxiliary information includes one of the following: performing LBT, and feeding back the auxiliary information when the listening result of the channel is idle; and directly feeding back the auxiliary information without performing the LBT .
  • the auxiliary information includes at least one of the following: a channel listening result and a CSI report.
  • the channel includes multiple sub-channels; wherein, the listening result includes a listening result of each sub-channel in the multiple sub-channels.
  • the apparatus for determining information in this embodiment of the present application may be an apparatus, or may be a component, an integrated circuit, or a chip in a terminal.
  • the device may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machine, or self-service machine, etc., which are not specifically limited in the embodiments of the present application.
  • the information determining device in the embodiment of the present application may be a device having an operating system.
  • the operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
  • the information determining apparatus provided in the embodiment of the present application can implement each process implemented by the method embodiment in FIG. 3 , and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • FIG. 6 is a schematic structural diagram of an apparatus for determining information according to an embodiment of the present application, and the apparatus may correspond to a network-side device in other embodiments. As shown in FIG. 6, the apparatus 600 includes the following modules.
  • the sending module 602 may be configured to send first information, where the first information is used to indicate whether the terminal performs LBT and/or feeds back auxiliary information.
  • the sending module 602 may also be configured to send information to the terminal in the case of receiving the auxiliary information fed back by the terminal.
  • whether the terminal performs LBT and/or whether to feed back auxiliary information is triggered by the first information, and information is sent to the terminal only after receiving the auxiliary information fed back by the terminal to avoid interference from hidden nodes.
  • the solution of triggering whether the terminal performs LBT and/or whether to feed back auxiliary information through the first information is easy to implement, and at the same time, the complexity of detecting the first information by the terminal is reduced, and it is convenient to reduce the power consumption of the terminal.
  • the foregoing embodiments take the uplink/downlink (UL/DL) as an example to illustrate the information determination method of the embodiments of the present application.
  • the embodiments of the present application can also be applied to sidelink scenarios, that is, both the transmitting end and the receiving end are terminals.
  • Applying the method to a first terminal (receiving end) includes: receiving first information; the first information may be information such as sidelink control information (Sidelink Control Information, SCI); and determining whether to execute LBT and/or according to the first information Feedback auxiliary information.
  • SCI Sidelink Control Information
  • the first information includes at least one of the following: a field in the SCI, an indication value of the field in the SCI, the RNTI for scrambling the SCI, the SCI format, the search space set, the search space set grouping, the secondary link channel, the secondary Link signal, channel occupancy time information.
  • applying the method to the second terminal includes: sending first information, where the first information is used to indicate whether the first terminal performs LBT and/or feeds back auxiliary information; after receiving the auxiliary information fed back by the first terminal when the message is sent to the first terminal.
  • an embodiment of the present application further provides a communication device 700, including a processor 701, a memory 702, a program or instruction stored in the memory 702 and executable on the processor 701,
  • a communication device 700 including a processor 701, a memory 702, a program or instruction stored in the memory 702 and executable on the processor 701
  • the communication device 700 is a terminal
  • the program or instruction is executed by the processor 701
  • each process of the above information determination method embodiment can be implemented, and the same technical effect can be achieved. To avoid repetition, details are not described here.
  • An embodiment of the present application further provides a terminal, including a processor and a communication interface, where the communication interface is configured to acquire first information, and the processor is configured to determine whether to perform LBT and/or feed back auxiliary information according to the first information.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 8 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.
  • the terminal 800 includes but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, a processor 810 and other components .
  • the terminal 800 may also include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 810 through a power management system, so as to manage charging, discharging, and power consumption through the power management system management and other functions.
  • a power supply such as a battery
  • the terminal structure shown in FIG. 8 does not constitute a limitation on the terminal, and the terminal may include more or less components than shown, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 804 may include a graphics processor (Graphics Processing Unit, GPU) 8041 and a microphone 8042. Such as camera) to obtain still pictures or video image data for processing.
  • the display unit 806 may include a display panel 8061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 807 includes a touch panel 8071 and other input devices 8072 .
  • the touch panel 8071 is also called a touch screen.
  • the touch panel 8071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 8072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described herein again.
  • the radio frequency unit 801 receives the downlink data from the network side device, and then processes it to the processor 810; in addition, sends the uplink data to the network side device.
  • the radio frequency unit 801 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • Memory 809 may be used to store software programs or instructions as well as various data.
  • the memory 809 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.) and the like.
  • the memory 809 may include a high-speed random access memory, and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM) ), erasable programmable read-only memory (ErasablePROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • ErasablePROM ErasablePROM
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory for example at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • the processor 810 may include one or more processing units; optionally, the processor 810 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly deal with wireless communications, such as baseband processors. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 810.
  • the radio frequency unit 801 may be configured to acquire first information; the processor 810 may be configured to determine whether to perform LBT and/or feed back auxiliary information according to the first information.
  • the first information is used to trigger whether the terminal performs LBT and/or whether to feed back auxiliary information.
  • the network side device only sends information to the terminal after receiving the auxiliary information fed back by the terminal to avoid interference from hidden nodes.
  • the solution of triggering whether the terminal performs LBT and/or whether to feed back auxiliary information through the first information is easy to implement, and at the same time, the complexity of detecting the first information by the terminal is reduced, and it is convenient to reduce the power consumption of the terminal.
  • the terminal 800 provided in this embodiment of the present application can also implement the various processes of the foregoing information determination method embodiments, and can achieve the same technical effect. To avoid repetition, details are not repeated here.
  • An embodiment of the present application further provides a network-side device, including a processor and a communication interface, where the communication interface is used to send first information, where the first information is used to indicate whether the terminal performs LBT and/or feeds back auxiliary information; it can also be used In the case of receiving the auxiliary information fed back by the terminal, the information is sent to the terminal.
  • This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment, and each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.
  • the network side device 900 includes: an antenna 91 , a radio frequency device 92 , and a baseband device 93 .
  • the antenna 91 is connected to the radio frequency device 92 .
  • the radio frequency device 92 receives information through the antenna 91, and sends the received information to the baseband device 93 for processing.
  • the baseband device 93 processes the information to be sent and sends it to the radio frequency device 92
  • the radio frequency device 92 processes the received information and sends it out through the antenna 91 .
  • the above-mentioned frequency band processing apparatus may be located in the baseband apparatus 93 , and the method performed by the network side device in the above embodiments may be implemented in the baseband apparatus 93 .
  • the baseband apparatus 93 includes a processor 94 and a memory 95 .
  • the baseband device 93 may include, for example, at least one baseband board on which a plurality of chips are arranged. As shown in FIG. 9 , one of the chips is, for example, the processor 94 , which is connected to the memory 95 to call the program in the memory 95 and execute it.
  • the network-side device shown in the above method embodiments operates.
  • the baseband device 93 may further include a network interface 96 for exchanging information with the radio frequency device 92, and the interface is, for example, a common public radio interface (CPRI for short).
  • CPRI common public radio interface
  • the network-side device in the embodiment of the present application further includes: an instruction or program stored in the memory 95 and executable on the processor 94, and the processor 94 invokes the instruction or program in the memory 95 to execute the module shown in FIG. 6 to execute method, and achieve the same technical effect, in order to avoid repetition, it is not repeated here.
  • Embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the foregoing information determination method embodiment can be implemented, and the same can be achieved. In order to avoid repetition, the technical effect will not be repeated here.
  • the processor may be the processor in the terminal described in the foregoing embodiment.
  • the readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
  • An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the information determination method embodiment described above.
  • the chip includes a processor and a communication interface
  • the communication interface is coupled to the processor
  • the processor is configured to run a program or an instruction to implement the information determination method embodiment described above.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
  • the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation.
  • the technical solution of the present application can be embodied in the form of a software product in essence or in a part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network side device, etc.) execute the methods described in the various embodiments of this application.
  • a storage medium such as ROM/RAM, magnetic disk, CD-ROM

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon des modes de réalisation, la présente demande concerne un procédé et un dispositif de détermination d'informations. Le procédé consiste : à obtenir, par un terminal, des premières informations ; à déterminer, par le terminal, en fonction des premières informations, s'il faut exécuter un accès multiple avec écoute de porteuse (CSMA) et/ou des informations d'assistance de rétroaction. Dans la présente demande, l'interférence d'un nœud caché est évitée et la complexité de test des premières informations par le terminal est réduite, d'où une réduction de la consommation d'énergie du terminal.
PCT/CN2022/081217 2021-03-17 2022-03-16 Procédé et dispositif de détermination d'informations WO2022194216A1 (fr)

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