WO2020156024A1 - 用于传输下行控制信道的方法、终端设备和网络设备 - Google Patents
用于传输下行控制信道的方法、终端设备和网络设备 Download PDFInfo
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- WO2020156024A1 WO2020156024A1 PCT/CN2020/070172 CN2020070172W WO2020156024A1 WO 2020156024 A1 WO2020156024 A1 WO 2020156024A1 CN 2020070172 W CN2020070172 W CN 2020070172W WO 2020156024 A1 WO2020156024 A1 WO 2020156024A1
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- 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
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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
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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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
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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
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- 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
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- 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
Definitions
- This application relates to the field of communications, and more specifically to a method, terminal equipment and network equipment for transmitting downlink control channels.
- terminal equipment To access the network, terminal equipment must first perform cell search and obtain cell system information. After the cell search process, the terminal device has achieved downlink synchronization with the cell, and the terminal device needs to further obtain system information of the cell in order to access the cell and work correctly in the cell. Among them, the system information is scheduled by the downlink control channel.
- the new radio (NR) protocol defines three multiplexing patterns for synchronous signal block (synchronous signal block, SSB) and remaining minimum system information (RMSI) control resource set (control resource set) , CORESET) multiplexing between signals, as shown in Figure 1.
- SSB and RMSI CORESET are at different moments.
- the transmission bandwidth of SSB overlaps with the initial active (downlink, DL) bandwidth part (BWP) that includes RMSI CORESET; in mode 2, SSB and RMSI CORESET overlap At different moments, the transmission bandwidth of SSB does not overlap with the initial activated downlink bandwidth area including RMSI CORESET; in mode 3, SSB and RMSI CORESET are at the same time, and the transmission bandwidth of SSB does not overlap with the initial activated downlink bandwidth area including RMSI CORESET .
- BWP bandwidth part
- the initial detection time of the downlink control channel is an absolute time value, such as the number of milliseconds (ms) in a certain system frame, or a certain time Which orthogonal frequency division multiplexing (OFDM) symbol in the slot, etc.
- ms milliseconds
- OFDM orthogonal frequency division multiplexing
- the downlink control channel actually fails to be transmitted due to the failure of the channel detection result, which seriously affects the reception of the terminal equipment. Into performance.
- the present application provides a method, terminal equipment and network equipment for detecting a downlink control channel, which can enable the terminal equipment to effectively access the network in an unlicensed frequency band.
- this application provides a method for transmitting a downlink control channel.
- the method includes: a terminal device receives a common signal block sent by a network device, the common signal block includes indication information, and the indication information is used to indicate a time slot
- the offset and/or the initial detection of the downlink control channel orthogonal frequency division multiplexing OFDM symbol, the time slot offset is the time slot where the common signal block is located and the initial detection time slot of the downlink control channel Offset:
- the terminal device detects the downlink control channel according to the slot offset and/or the initial detection OFDM symbol.
- the terminal device When the terminal device detects the common signal block, it means that the channel listening result is successful at this time. At this time, the network device has already seized the channel, so there are available resources to transmit the downlink control channel.
- the terminal device detects the downlink control channel on the relative time slot or symbol after the received common signal block, that is, the terminal device detects the downlink control channel immediately after determining that the listening result is successful Channel, which can increase the probability of successful downlink control information reception, thereby improving the access performance of terminal equipment.
- the terminal device detects the downlink control channel according to the slot offset and/or the initial detection of the OFDM symbol, including: the terminal device detects the downlink control channel according to the slot offset and the common The time slot where the signal block is located determines the initial detection time slot of the downlink control channel; the terminal equipment determines the initial detection position of the downlink control channel according to the initial detection OFDM symbol and the initial detection time slot; the terminal equipment According to the initial detection position, the downlink control channel is detected.
- the terminal equipment simultaneously determines the initial detection position of the downlink control channel according to the time slot offset and the initial detection symbol of the downlink control channel, so that the initial detection position of the downlink control channel can be relative to the common signal block.
- a certain OFDM symbol in a certain time slot after the time slot is shifted can flexibly and accurately determine the start detection position of the downlink control channel.
- the time slot offset is 1 time slot, 2 time slots, 3 time slots, or 4 time slots.
- the initial detection OFDM symbol is the OFDM symbol whose index number is 0 or the OFDM symbol whose index number is (K/2) rounded down, and K is the number of OFDM symbols included in one slot,
- the index number of the first OFDM symbol occupied by the common signal block in the first mapping pattern of the common signal block is 2 or 8.
- the initial detection OFDM symbol is the OFDM symbol with index 0 of the initial detection slot or the OFDM symbol with index number (K/2) rounded down, that is to say, the initial detection OFDM symbol Only the first or middle OFDM symbol of the initial detection time slot is detected, which can reduce the type of indication information and thereby reduce the signaling overhead.
- the slot offset is 0, and the initial detection OFDM symbol is the first OFDM symbol after the last OFDM symbol occupied by the common signal block.
- the index number of the first OFDM symbol occupied by the common signal block in the first mapping pattern of the common signal block is 2 or 8.
- the initial detection symbol is the first or second one after the last OFDM symbol occupied by the common signal block. OFDM symbols, which can avoid common signal blocks in the same time slot.
- the slot offset is 1 slot or 2 slots
- the initial detection OFDM symbol is the initial detection slot
- the slot offset is 3 slots or 4 slots
- the initial detection OFDM symbol is the initial detection slot
- K is the number of OFDM symbols included in a slot, where the common signal block in the second mapping pattern
- the index number of the first OFDM symbol occupied by the signal block is 2, 4, 6, or 8.
- the initial detection OFDM symbol is the OFDM symbol with index 0 of the initial detection slot or the OFDM symbol with index number (K/2) rounded down, that is to say, the initial detection OFDM symbol Only the first or middle OFDM symbol of the initial detection time slot is detected, which can reduce the type of indication information and thereby reduce the signaling overhead.
- the mapping of the downlink control channel can avoid the common signal blocks in the same time slot.
- the mapping of the downlink control channel can avoid the common signal blocks in the same time slot.
- the initial detection time slot is the first in the next COT.
- Time slots available for signal transmission, and/or the initial detection OFDM symbol is any one of the first time slots available for signal transmission in the next COT, which can be used for signal transmission, where COT is a network device The preempted time period available for transmission channel.
- the network device may not have available resources to transmit the downlink control channel during the preempted COT time period.
- the above technical solution receives the downlink control channel in the next COT, which can increase the probability of successful downlink control information reception, thereby improving the access performance of the terminal device.
- the initial detection OFDM symbol is the first OFDM symbol that can be used for signal transmission in the first time slot that can be used for signal transmission in the next COT.
- the start detection OFDM symbol is the start Detect any OFDM symbol of the time slot that can be used to transmit signals; when the carrier frequency is less than or equal to the second carrier frequency and greater than or equal to the first carrier frequency, when the time slot offset is greater than or equal to 4
- the initial detection OFDM symbol is any OFDM symbol that can be used for signal transmission in the initial detection timeslot.
- the maximum number of public signal blocks that a network device needs to send in a window is related to the carrier frequency of the network device. For example, when the carrier frequency is less than 3 GHz, the number of public signal blocks that need to be sent is 4. Transmission of 2 common signal blocks, then only 2 time slots in a 5ms window can complete the transmission of 4 common signal blocks. For example, the common signal block is transmitted in the first 2 time slots, and there is no common signal in the next 3 time slots. For signal block transmission, there is no need to avoid the OFDM symbols occupied by the common signal block in the last three time slots.
- the present application provides a method for transmitting a downlink control channel.
- the method includes: a network device sends a common signal block to a terminal device, the common signal block includes indication information, and the indication information is used to indicate a time slot deviation.
- the shift amount and/or the initial detection of the downlink control channel orthogonal frequency division multiplexing OFDM symbol, the time slot offset is the offset between the time slot where the common signal block is located and the initial detection time slot of the downlink control channel Shift; the network device detects the OFDM symbol according to the slot offset and/or the start, and sends downlink control information on the downlink control channel.
- the terminal device When the terminal device detects the common signal block, it means that the channel listening result is successful at this time. At this time, the network device has already seized the channel, so there are available resources to transmit the downlink control channel. In the above technical solution, the network device transmits the downlink control information on the downlink control channel in the relative time slot or symbol after the common signal block is sent. That is to say, the network device immediately follows the case when it determines that the listening result is successful. The downlink control information is transmitted on the downlink control channel, which can increase the probability of successful downlink control information transmission, thereby improving the access performance of the terminal device.
- the network device sends downlink control information on the downlink control channel according to the slot offset and/or the initial detection of the OFDM symbol, including: the network device detects the OFDM symbol according to the slot offset The amount of shift and the time slot of the common signal block determine the initial detection time slot of the downlink control channel; the network device determines the initial detection time slot of the downlink control channel according to the initial detection OFDM symbol and the initial detection time slot Location: The network device sends downlink control information on the downlink control channel according to the initial detection position.
- the network equipment determines the initial detection position of the downlink control channel according to the time slot offset and the initial detection symbol of the downlink control channel, so that the initial detection position of the downlink control channel can be relative to the common signal block.
- a certain OFDM symbol in a certain time slot after the time slot is shifted can flexibly and accurately determine the start detection position of the downlink control channel.
- the time slot offset is 1 time slot, 2 time slots, 3 time slots, or 4 time slots
- the start The detected OFDM symbol is the OFDM symbol whose index number is 0 or the OFDM symbol whose index number is (K/2) rounded down.
- K is the number of OFDM symbols included in a slot, where The index number of the first OFDM symbol occupied by the common signal block in the first mapping pattern of the common signal block is 2 or 8.
- the initial detection OFDM symbol is the OFDM symbol with index 0 of the initial detection slot or the OFDM symbol with index number (K/2) rounded down, that is to say, the initial detection OFDM symbol Only the first or middle OFDM symbol of the initial detection time slot is detected, which can reduce the type of indication information and thereby reduce the signaling overhead.
- the slot offset is 0, and the initial detection OFDM symbol is the first OFDM symbol after the last OFDM symbol occupied by the common signal block.
- the index number of the first OFDM symbol occupied by the common signal block in the first mapping pattern of the common signal block is 2 or 8.
- the initial detection symbol is the first or second one after the last OFDM symbol occupied by the common signal block. OFDM symbols, which can avoid common signal blocks in the same time slot.
- the initial detection OFDM symbol is an OFDM symbol with an index of 0 or an OFDM symbol with an index of 12 of the initial detection slot,
- the index number of the first OFDM symbol occupied by the common signal block in the second mapping pattern of the common signal block is 2, 4, 6, or 8.
- the slot offset is 3 slots or 4 slots
- the initial detection OFDM symbol is the initial detection slot
- the OFDM symbol whose index number is 0 or the OFDM symbol whose index number is (K/2) rounded down, K is the number of OFDM symbols included in a slot, where the second mapping pattern of the common signal block
- the index number of the first OFDM symbol occupied by the common signal block is 2, 4, 6, or 8.
- the initial detection OFDM symbol is the OFDM symbol with index 0 of the initial detection slot or the OFDM symbol with index number (K/2) rounded down, that is to say, the initial detection OFDM symbol Only the first or middle OFDM symbol of the initial detection time slot is detected, which can reduce the type of indication information and thereby reduce the signaling overhead.
- the mapping of the downlink control channel can avoid the common signal blocks in the same time slot.
- the mapping of the downlink control channel can avoid the common signal blocks in the same time slot.
- the initial detection time slot is the first in the next COT.
- Time slots available for signal transmission, and/or the initial detection OFDM symbol is any one of the first time slots available for signal transmission in the next COT, which can be used for signal transmission, where COT is a network device The preempted time period available for transmission channel.
- the network device may not have available resources to transmit the downlink control channel during the preempted COT time period.
- the above technical solution receives the downlink control channel in the next COT, which can increase the probability of successful downlink control information reception, thereby improving the access performance of the terminal device.
- the initial detection OFDM symbol is the first OFDM symbol that can be used for signal transmission in the first time slot that can be used for signal transmission in the next COT.
- the start detection OFDM symbol is the start Detect any OFDM symbol of the time slot that can be used to transmit signals; when the carrier frequency is less than or equal to the second carrier frequency and greater than or equal to the first carrier frequency, when the time slot offset is greater than or equal to 4
- the initial detection OFDM symbol is any OFDM symbol that can be used for signal transmission in the initial detection timeslot.
- the maximum number of common signal blocks that a network device needs to send in a window is related to the carrier frequency of the network device. For example, when the carrier frequency is less than 3GHz, the number of common signal blocks that need to be sent is 4, which can be transmitted in one time slot 2 common signal blocks, then only 2 time slots in a 5ms window are needed to complete the transmission of 4 common signal blocks.
- the common signal block is transmitted in the first 2 time slots, and there is no common signal in the last 3 time slots. For block transmission, there is no need to avoid the OFDM symbols occupied by the common signal block in the last three time slots.
- the present application provides a terminal device, including a module for executing the first aspect or any one of the implementation manners of the first aspect.
- the present application provides a network device, including a module used to execute the second aspect or any one of the implementation manners of the second aspect.
- the present application provides a chip, which is connected to a memory, and is used to read and execute a software program stored in the memory to implement the first aspect or any one of the implementation manners of the first aspect Methods.
- the present application provides a chip, which is connected to a memory, and is used to read and execute a software program stored in the memory to implement the second aspect or any one of the implementation manners of the second aspect Methods.
- the present application provides a terminal device, including a transceiver, a processor, and a memory, configured to execute the method described in the first aspect or any one of the implementation manners of the first aspect.
- the present application provides a network device, including a transceiver, a processor, and a memory, configured to execute the method described in the second aspect or any one of the implementation manners of the second aspect.
- the present application provides a computer-readable storage medium, including instructions, which when run on a terminal device, cause the terminal device to execute the method described in the first aspect or any one of the implementation manners of the first aspect.
- this application provides a computer-readable storage medium, including instructions, which when run on a network device, cause the network device to execute the method described in the second aspect or any one of the implementation manners of the second aspect.
- this application provides a computer program product, which when running on a terminal device, causes the terminal device to execute the method described in the first aspect or any one of the implementation manners of the first aspect.
- the present application provides a computer program product that, when running on a network device, causes the network device to execute the method described in the second aspect or any one of the implementation manners of the second aspect.
- the present application provides a communication system that includes the terminal device described in the third aspect or the seventh aspect and the network device described in the fourth or eighth aspect.
- Figure 1 is a schematic diagram of the synchronization signal block and RMSI CORESET multiplexing pattern.
- Fig. 2 is a schematic diagram of synchronization signal block distribution according to an embodiment of the present application.
- Fig. 3 is a first mapping pattern of a common signal block in an embodiment of the present application.
- Fig. 4 is a second mapping pattern of a common signal block according to an embodiment of the present application.
- Fig. 5 is a first mapping pattern of a common signal block according to another embodiment of the present application.
- FIG. 6 is a schematic flowchart of a method for transmitting a downlink control channel according to an embodiment of the present application.
- FIG. 7 is a schematic diagram of indicating an initial detection time slot or symbol across COT according to an embodiment of the present application.
- Fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
- Fig. 9 is a schematic structural diagram of a network device provided according to an embodiment of the present application.
- FIG. 10 is a schematic structural diagram of a terminal device according to another embodiment of the present application.
- Fig. 11 is a schematic structural diagram of a network device provided according to another embodiment of the present application.
- GSM global system for mobile communications
- CDMA code division multiple access
- WCDMA broadband code division multiple access
- GPRS general packet radio service
- LTE long term evolution
- FDD frequency division duplex
- TDD LTE Time division duplex
- UMTS universal mobile telecommunication system
- WiMAX worldwide interoperability for microwave access
- the terminal equipment in the embodiments of this application may refer to user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
- the terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (personal digital assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or future evolution of the public land mobile network (PLMN) Terminal equipment, etc.
- PLMN public land mobile network
- direct terminal connection (device to device, D2D) communication may be performed between terminal devices.
- the network device in the embodiment of the application may be a device used to communicate with a terminal device.
- the network device may be a global system for mobile communications (GSM) system or code division multiple access (CDMA)
- GSM global system for mobile communications
- CDMA code division multiple access
- the base transceiver station (BTS) in the LTE system can also be the base station (NodeB, NB) in the wideband code division multiple access (WCDMA) system, or the evolved base station (evolved) in the LTE system.
- NodeB, NB base station
- WCDMA wideband code division multiple access
- evolved evolved base station
- NodeB eNB or eNodeB
- it can also be a wireless controller in a cloud radio access network (CRAN) scenario
- the network device can be a relay station, access point, vehicle-mounted device, wearable device, and future
- the network equipment in the 5G network or the network equipment in the future evolved PLMN network, etc., are not limited in the embodiment of the present application.
- system and “network” in this application are often used interchangeably herein.
- the term “and/or” in this application is only an association relationship that describes associated objects, indicating that there can be three types of relationships. For example, A and/or B can mean that there is A alone, and both A and B exist. There are three situations of B.
- the character “/” in this text generally indicates that the associated objects before and after are in an "or” relationship.
- the common signal block in this application may be any signal block that can realize the time-frequency synchronization between the network device and the terminal device, and the terminal device accesses the network.
- the common signal block may be a synchronous signal/physical broadcast channel block (SS/PBCH Block or SSB), etc.
- SS/PBCH Block synchronous signal/physical broadcast channel block
- SSB synchronous signal/physical broadcast channel block
- the synchronization signal/broadcast channel block is collectively referred to as the synchronization signal block. It should be understood that the two are only different in name, and they are equivalent in content.
- a synchronization signal block occupies 4 consecutive OFDM symbols, which include NR-PSS, NR-SSS and NR-PBCH.
- the synchronization signal block adopts periodic transmission.
- the time slot distribution of the synchronization signal block can be shown in Figure 2, where each square is a time slot, and a time slot can be It includes at most two synchronization signal blocks.
- Fig. 3 is a first mapping pattern of a common signal block in an embodiment of the present application.
- the first mapping pattern corresponds to case A where the subcarrier spacing is 15KHz.
- each square in FIG. 3 can represent an OFDM symbol (also called a time domain symbol, a symbol position, or a time domain symbol position, etc.), and the number in the square can represent an OFDM symbol index.
- the first square in each row represents the first OFDM symbol of a slot, and 14 consecutive OFDM symbols constitute 1 slot.
- Four consecutive OFDM symbols filled with the same line (for example, numbered 2, 3, 4, and 5) can be considered as a candidate time domain position of the synchronization signal block.
- the first row of FIG. 3 shows the mapping pattern of the synchronization signal block in the time slot when the sub-carrier spacing is 15 KHz.
- the index number of the first OFDM symbol of the candidate time domain position of the synchronization signal block is ⁇ 2, 8 ⁇ +14*n.
- Fig. 4 is a second mapping pattern of a common signal block according to an embodiment of the present application.
- the second mapping pattern corresponds to case B where the subcarrier spacing is 30KHz.
- each square in FIG. 4 can represent an OFDM symbol (also referred to as a time domain symbol, a symbol position, or a time domain symbol position, etc.), and the number in the square can represent an index of an OFDM symbol.
- the first square in each row represents the first OFDM symbol of a slot, and 14 consecutive OFDM symbols constitute 1 slot.
- Four consecutive OFDM symbols filled with the same line for example, numbered 4, 5, 6, 7) can be considered as a candidate time domain position of the synchronization signal block.
- the index number of the first OFDM symbol of the candidate time domain position of the synchronization signal block is ⁇ 4, 8, 16, 20 ⁇ +28*n.
- Fig. 5 is a first mapping pattern of a common signal block according to another embodiment of the present application.
- This mapping pattern corresponds to case C where the subcarrier spacing is 30KHz.
- each square in FIG. 5 can represent an OFDM symbol (also referred to as a time domain symbol, a symbol position, or a time domain symbol position, etc.), and the number in the square can represent an index of an OFDM symbol.
- the first square in each row represents the first OFDM symbol of a slot, and 14 consecutive OFDM symbols constitute 1 slot.
- Four consecutive OFDM symbols filled with the same line (for example, numbered 2, 3, 4, and 5) can be considered as a candidate time domain position of the synchronization signal block.
- the second row of FIG. 5 shows the mapping pattern of the synchronization signal block in the time slot when the subcarrier spacing is 30KHz.
- the index number of the first OFDM symbol of the candidate time domain position of the synchronization signal block is ⁇ 2, 8 ⁇ +14*n.
- Figures 2 to 5 only take 15KHz and 30KHz as examples, and the subcarrier spacing can also be other subcarrier spacings, such as 60KHz, 120KHz, 240KHz, etc.; Figures 2 to 5 only use the carrier frequency within 3GHz and For example, within 3GHz to 6GHz, the carrier frequency can also be 6GHz to 52.6GHz and so on.
- the time-domain configuration of RMSI CORESET corresponding to the common signal block needs to be redesigned, and when configured in the time-domain configuration method of the prior art In domain location, the downlink control channel cannot actually be sent, which affects the access performance of the terminal device.
- This application provides a method for transmitting the downlink control channel, which fully considers the multiplexing pattern of the common signal block and the downlink control channel, the mapping pattern of the common signal block in the time slot, and the channel sensing result, which can improve the success of the downlink control information reception. Probability, thereby improving the access performance of terminal equipment.
- FIG. 6 is a schematic flowchart of a method for transmitting a downlink control channel according to an embodiment of the present application.
- the method shown in FIG. 6 may include at least part of the following content.
- the network device sends a common signal block to the terminal device, the common signal block includes indication information, the indication information is used to indicate the slot offset and/or the initial detection of the OFDM symbol of the downlink control channel,
- the time slot offset is the offset between the time slot where the common signal block is located and the initial detection time slot of the downlink control channel.
- the network device may indicate the initial detection OFDM symbol of the downlink control channel by indicating the index number of the OFDM symbol, or directly indicate the number of OFDM symbols in the time slot.
- the network device sends the downlink control information on the downlink control channel according to the slot offset and/or the initial detection of the OFDM symbol.
- the terminal device detects the downlink control channel according to the slot offset and/or the initial detection of the OFDM symbol.
- the common signal block in this application may be any signal block that can realize time-frequency synchronization between network equipment and terminal equipment, and the terminal equipment accesses the network.
- the common signal block may be a synchronization signal/broadcast channel block or the like.
- the terminal device When the terminal device detects the common signal block, it indicates that the channel detection result of the network device is successful at this time, and the network device has available transmission resources to transmit the downlink control channel.
- the terminal device detects the downlink control channel on the relative time slot or symbol after the received common signal block, that is, the terminal device detects the downlink control channel immediately after determining that the listening result is successful Channel, which can increase the probability of successful downlink control information reception, thereby improving the access performance of terminal equipment.
- the indication information indicates the time slot offset between the time slot where the common signal block is located and the initial detection time slot of the downlink control channel.
- the network equipment sends downlink control information on the downlink control channel according to the time slot offset, and the terminal equipment detects the downlink control channel according to the time slot offset.
- the initial detection time slot of the downlink control channel may be a certain relative time slot after the common signal block is detected.
- the network device determines the initial detection time slot of the downlink control channel according to the time slot offset and the time slot where the common signal block is located, and transmits the downlink control information on the downlink control channel according to the determined initial detection time slot
- the terminal equipment also determines the initial detection time slot of the downlink control channel according to the time slot offset and the time slot in which the common signal block is located, and detects the downlink control channel according to the determined initial detection time slot.
- the network device may send the downlink control information on any OFDM symbol in the initial detection time slot, and the terminal device may start to detect the downlink control information from the first OFDM symbol in the initial detection time slot.
- the network device pre-configures the initial detection OFDM symbol of the downlink control channel for the terminal device, and the initial detection OFDM symbol may refer to an absolute position in a certain time slot, for example, an OFDM symbol with an index number of 0, The third OFDM symbol of the time slot, etc., at this time, the network device does not need to instruct the terminal device to detect the OFDM symbol relatively initially.
- the network device transmits the downlink control information on the OFDM symbol with index number 7 in the determined initial detection slot.
- the device can start detecting the downlink control channel from the OFDM symbol with index number 7 in the determined initial detection slot.
- the indication information indicates the initial detection OFDM symbol of the downlink control channel.
- the network device sends downlink control information on the downlink control channel according to the initial detection OFDM symbol, and the terminal device detects the downlink control channel according to the initial detection OFDM symbol. That is, the initial detection OFDM symbol of the downlink control channel may be a certain relative OFDM symbol after the common signal block in the time slot where the common signal block is detected.
- the network equipment determines the initial detection position of the downlink control channel according to the time slot where the OFDM symbol and the common signal block are located, and sends the downlink control information on the downlink control channel according to the determined initial detection position, and the terminal equipment also according to The time slot where the OFDM symbol and the common signal block are initially detected, the initial detection position of the downlink control channel is determined, and the downlink control channel is detected according to the determined initial detection position.
- the network device may indicate the initial detection of OFDM symbols by indicating the number of OFDM symbols that needs to be offset from the last OFDM symbol occupied by the common signal block.
- a time slot includes 14 symbols, the last OFDM symbol occupied by the common signal block is the OFDM symbol with index number 11, and the number of OFDM symbols indicated by the network device is 15, which means that the network device can be used when the common signal block is located.
- the downlink control information is sent on the OFDM symbol with the index number 12 of the next time slot of the slot, and the terminal device can start to detect the downlink control channel on the OFDM symbol with the index number 12 of the next time slot where the common signal block is located.
- the network device pre-configures the time slot offset for the terminal device. At this time, the network device does not need to indicate the time slot offset of the terminal device.
- the pre-configuration here means that the time slot offset is predefined between the base station and the terminal, so there is no need for an explicit indication.
- the network equipment pre-configures the time slot offset for the terminal equipment as 2 time slots, and instructs the terminal equipment to start detecting the OFDM symbol as the OFDM symbol with index number 7, then the network equipment is after the time slot where the common signal block is located.
- the OFDM symbol with index number 7 in the second time slot of sends downlink control information, and the terminal equipment can start to detect the downlink control channel from the OFDM symbol with index number 7 in the second time slot after the time slot where the common signal block is located .
- the indication information indicates the time slot offset between the time slot where the common signal block is located and the initial detection time slot of the downlink control channel and the initial detection orthogonal frequency division multiplexing OFDM symbol of the downlink control channel .
- the network equipment determines the initial detection time slot of the downlink control channel according to the time slot offset and the time slot where the common signal block is located. Further, the network equipment determines the downlink control channel according to the initial detection OFDM symbol and the initial detection time slot. The start detection position of the control channel, and according to the start detection position, the downlink control information is sent on the downlink control channel; the terminal equipment determines the start of the downlink control channel according to the time slot offset and the time slot of the common signal block Detect the time slot, and further determine the initial detection position of the downlink control channel according to the initial detection OFDM symbol and the initial detection time slot, and detect the downlink control channel according to the initial detection position.
- the specific configuration of downlink control channel transmission resources should fully consider the mapping pattern of the common signal block and the channel sensing result.
- the configuration of downlink control channel transmission resources should avoid the transmission resources of common signal blocks as much as possible. Therefore, in a time slot, the symbols that can be used to transmit the downlink control channel are the OFDM symbols that follow the common signal block and are not occupied by the common signal block.
- the initial detection OFDM symbol may be after the last OFDM symbol occupied by the common signal block and The OFDM symbol before the first OFDM symbol occupied by the next common signal block.
- the initial detection OFDM symbol can be the first or second OFDM symbol after the last OFDM symbol occupied by the common signal block, that is, the index number is 6, 7, 12 or 13 OFDM symbols.
- the initial detection OFDM symbol can be the first or second OFDM symbol after the last OFDM symbol occupied by the common signal block, that is, The OFDM symbol with index number 12 or 13, when the index number of the slot where the common signal block is located is odd, the initial detection OFDM symbol can be the first and second after the last OFDM symbol occupied by the common signal block , The third or fourth OFDM symbol, that is, the OFDM symbol with index number 10, 11, 12, or 13.
- the initial detection OFDM symbol may be the index number of the initial detection slot An OFDM symbol of 0 or an OFDM symbol whose index number is (K/2) rounded down, K is the number of OFDM symbols included in a slot, where K may be an integer greater than or equal to 1.
- the time slot offset is 1 time slot, 2 time slots, 3 time slots or 4 time slots.
- the initial detection OFDM symbol may be the index number of the initial detection slot The OFDM symbol of 0 or the OFDM symbol of index number 12.
- the time slot offset is 1 time slot or 2 time slots.
- the initial detection of the OFDM symbol is the initial detection Any one of the time slots can be used to transmit the OFDM symbol of the signal.
- L is related to the carrier frequency, that is to say, when the carrier frequency is less than or equal to the first carrier frequency, when the slot offset is greater than or equal to L/2 slots, start to detect OFDM
- the symbol is any OFDM symbol that can be used to transmit signals in the initial detection slot; when the carrier frequency is less than or equal to the second carrier frequency and greater than or equal to the first carrier frequency, when the slot offset is greater than Or when it is equal to L/2 time slots, the initial detection OFDM symbol is any one of the initial detection time slots that can be used for signal transmission.
- the first carrier frequency may be 3 GHz, 2.4 GHz, etc.
- the second carrier frequency may be 6 GHz, 7 GHz, etc.
- the first detection OFDM symbol is any one of the first detection slots that can be used to transmit signals; when the first The carrier frequency is 3 GHz, and the second carrier frequency is 6 GHz.
- the time slot offset is greater than or equal to 4 time slots, the initial detection OFDM symbol is any one of the initial detection time slots that can be used for signal transmission.
- the maximum value of the time slot offset is related to the value of the time window for transmitting the common signal block and the size of the time slot or the subcarrier interval.
- the time window for transmitting the common signal block is 5ms, and 1ms is a time slot (corresponding to 15kHz subcarrier interval), then the maximum time slot offset can be 4 time slots; the time window for transmitting the common signal block is 5ms , 0.5ms is a time slot (corresponding to 30kHz subcarrier interval), then the maximum time slot offset can be 9 time slots.
- the transmission and detection of the downlink control channel may be in the next COT, that is, the time-domain offset indication with respect to the detected common signal block indicated by the indication information may be cross-COT.
- the initial detection time slot indicated by the time slot offset is in the next COT of the COT where the common signal block is located
- the initial detection time slot is the first time slot available for signal transmission in the next COT
- the initial detection OFDM symbol is any one of the first time slots available for signal transmission in the next COT that can be used for signal transmission.
- the initial detection OFDM symbol is the first OFDM symbol available for signal transmission in the first time slot available for signal transmission in the next COT.
- Table 1, Table 2, and Table 3 are time-domain configuration tables of downlink control channel transmission resources under different conditions. It should be understood that Table 1, Table 2, and Table 3 are only exemplary. Table 1, Table 2 and Table 3 may include less or more content. The various terms in Table 1, Table 2 and Table 3 may also be referred to in other terms.
- the configuration index may also be an index
- the initial detection OFDM symbol index S may also be a symbol index.
- Table 1 and/or Table 2 and/or Table 3 are stored in the terminal device and the network device.
- the indication information of the common signal block sent by the network device can indicate the configuration index in Table 1, Table 2 and Table 3.
- the terminal device receives After reaching the common signal block, determine the slot offset and the initial detection OFDM symbol according to the configuration index indicated by the indication information and Table 1, Table 2, or Table 3, and then determine the initial detection position of the downlink control channel.
- the numbering of the configuration index in the table can be a numbering method starting from 1 or a numbering method starting from 0, both of which are within the protection scope of this application.
- Table 1 is for the case A (as shown in Figure 3) and case C (as shown in Figure 5) of the common signal block mapping pattern, where n SSB represents the time slot index number of the common signal block detected by the terminal device, and S SSB represents The terminal equipment detects the last OFDM symbol index number of the SSB , n SSB + offset1 represents the time slot in which the terminal equipment detects the SSB as the starting point offset by offset1 time slot, and S SSB + offset2 represents the terminal equipment detects the last OFDM of the SSB The symbol is offset by 2 OFDM symbols as the starting point.
- M is the control channel resource collection interval.
- N is the number of search space sets in each time slot (can also be called the number of RMSI CORESET in a time slot).
- Table 2 is for the case B of the common signal block mapping pattern (as shown in Figure 4), where n SSB represents the time slot index number of the common signal block detected by the terminal device, and n SSB +offset1 represents the time slot of the terminal device detected SSB As the starting point, offset by 1 time slot.
- M is the control channel resource set interval.
- N is the number of search space sets in each time slot (can also be called the number of RMSI CORESET in a time slot).
- the transmission and detection of the downlink control channel can be in the next COT.
- Table 3 addresses the case A and case C of the common signal block mapping pattern, and there is a case where the downlink control channel transmission and detection are in the next COT.
- n SSB represents the time slot index number of the common signal block detected by the terminal device
- S SSB represents the last OFDM symbol index number of the terminal device detected SSB
- n SSB +offset1 represents the time slot of the terminal device detected SSB as the starting offset offset1 time slot
- S SSB +offset2 represents that the last OFDM symbol of the SSB detected by the terminal equipment is offset by 2 OFDM symbols as the starting point.
- M is the search space set interval.
- x represents the initial detection time slot of the downlink control channel is the first time slot that can transmit signals in the next COT.
- the first transmittable time slot in the next COT is identified by an initial signal or a wake-up signal, such as a wake up signal.
- S represents that the initial detection OFDM symbol of the downlink control channel is a certain symbol in the first transmittable time slot in the next COT.
- the initial detection OFDM symbol of the downlink control channel may be the first available symbol in the first signal-transmissible time slot in the next COT.
- the initial detection OFDM symbol of the downlink control channel may be the first OFDM symbol identified by an initial signal or a wake-up signal, such as a wake-up signal.
- FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
- the terminal device 800 shown in FIG. 8 may correspond to the above terminal device.
- the terminal device 800 includes a receiving module 810 and a detecting module 820.
- the receiving module 810 is configured to receive a common signal block sent by a network device.
- the common signal block includes indication information used to indicate the time slot offset and/or the initial detection of the downlink control channel.
- the detection module 820 is configured to detect the downlink control channel according to the slot offset and/or the initial detection OFDM symbol.
- the terminal device 800 further includes a processing module 830, configured to determine the initial detection time slot of the downlink control channel according to the time slot offset and the time slot where the common signal block is located; to detect the OFDM symbol according to the initial And the initial detection time slot to determine the initial detection position of the downlink control channel.
- the detection module 820 is specifically configured to detect the downlink control channel according to the initial detection position.
- the slot offset is 1 slot, 2 slots, 3 slots, or 4 slots
- the symbol is the OFDM symbol whose index number is 0 or the OFDM symbol whose index number is (K/2) rounded down, and K is the number of OFDM symbols included in one slot.
- the index number of the first OFDM symbol occupied by the common signal block in the first mapping pattern of the common signal block is 2 or 8.
- the slot offset is 0, and the initial detection OFDM symbol is the first or second one after the last OFDM symbol occupied by the common signal block.
- the slot offset is 1 slot or 2 slots
- the start detection OFDM symbol is the index number of the start detection slot is 0
- the index number of the first OFDM symbol occupied by the common signal block in the second mapping pattern of the common signal block is 2, 4, 6, or 8.
- the slot offset is 3 slots or 4 slots
- the initial detection OFDM symbol is the index number of the initial detection slot being 0
- the OFDM symbol or the OFDM symbol whose index number is (K/2) rounded down, K is the number of OFDM symbols included in a slot, where the common signal block in the second mapping pattern of the common signal block occupies
- the index number of the first OFDM symbol is 2, 4, 6, or 8.
- the slot offset is 0, and the initial detection OFDM symbol is the common signal block
- the first or second OFDM symbol after the last OFDM symbol occupied, wherein the index numbers of the first OFDM symbol occupied by the common signal block in the second mapping pattern of the common signal block are 2, 4, 6 or 8.
- the slot offset is 0, and the initial detection OFDM symbol is the common signal block
- the first or third OFDM symbol after the last OFDM symbol occupied, wherein the index numbers of the first OFDM symbol occupied by the common signal block in the second mapping pattern of the common signal block are 2, 4, 6 or 8.
- the initial detection time slot is the first in the next COT that can be used for signal transmission Time slot
- the initial detection OFDM symbol is any one of the first time slots available for signal transmission in the next COT that can be used for signal transmission
- COT is the OFDM symbol that can be used for signal transmission preempted by network equipment The time period of the transmission channel.
- the initial detection OFDM symbol is the first OFDM symbol that can be used for signal transmission in the first time slot available for signal transmission in the next COT.
- the initial detection OFDM symbol is any of the initial detection slots An OFDM symbol that can be used for signal transmission; when the carrier frequency is less than or equal to the second carrier frequency and greater than or equal to the first carrier frequency, when the slot offset is greater than or equal to 4 slots, The initial detection OFDM symbol is any OFDM symbol in the initial detection slot that can be used for signal transmission.
- the receiving module 810 and the detecting module 820 may be implemented by a transceiver.
- the processing module 830 may be implemented by a processor. The specific functions and beneficial effects of the receiving module 810, the detecting module 820, and the processing module 830 can be referred to the method shown in FIG. 6, which will not be repeated here.
- Fig. 9 is a schematic structural diagram of a network device provided according to an embodiment of the present application.
- the network device 900 in FIG. 9 may correspond to the above network device.
- the network device 900 includes a sending module 920.
- the sending module 920 is configured to send a common signal block to the terminal device, the common signal block includes indication information, and the indication information is used to indicate the time slot offset and/or the initial detection of the downlink control channel.
- Orthogonal Frequency Division Multiplexing OFDM Symbol the time slot offset is the offset between the time slot where the common signal block is located and the initial detection time slot of the downlink control channel; used to detect the time slot offset and/or the initial detection time OFDM symbol, and downlink control information is sent on the downlink control channel.
- the network device 900 further includes a processing module 930, configured to determine the initial detection time slot of the downlink control channel according to the time slot offset and the time slot where the common signal block is located; to detect the OFDM symbol according to the initial And the initial detection time slot to determine the initial detection position of the downlink control channel.
- the sending module 920 is specifically configured to send downlink control information on the downlink control channel according to the initial detection position.
- the slot offset is 1 slot, 2 slots, 3 slots, or 4 slots
- the initial detection OFDM symbol is the The OFDM symbol whose index number is 0 or the OFDM symbol whose index number is (K/2) rounded down at the start detection slot
- K is the number of OFDM symbols included in a slot
- the first common signal block The index number of the first OFDM symbol occupied by the common signal block in a mapping pattern is 2 or 8.
- the slot offset is 0, and the initial detection OFDM symbol is the first or second one after the last OFDM symbol occupied by the common signal block.
- the initial detection OFDM symbol is the OFDM symbol with index 0 or the OFDM symbol with index 12 of the initial detection slot, wherein the common signal
- the index number of the first OFDM symbol occupied by the common signal block in the second mapping pattern of the block is 2, 4, 6, or 8.
- the slot offset is 3 slots or 4 slots
- the start detection OFDM symbol is the index number of the start detection slot is 0
- the OFDM symbol or the OFDM symbol whose index number is (K/2) rounded down, K is the number of OFDM symbols included in a time slot, where the common signal block occupies in the second mapping pattern of the common signal block
- the index number of the first OFDM symbol is 2, 4, 6, or 8.
- the slot offset is 0, and the initial detection OFDM symbol is the common signal block
- the first or second OFDM symbol after the last OFDM symbol occupied, wherein the index numbers of the first OFDM symbol occupied by the common signal block in the second mapping pattern of the common signal block are 2, 4, 6 or 8.
- the slot offset is 0, and the initial detection OFDM symbol is the common signal block
- the first or third OFDM symbol after the last OFDM symbol occupied, wherein the index numbers of the first OFDM symbol occupied by the common signal block in the second mapping pattern of the common signal block are 2, 4, 6 or 8.
- the initial detection time slot is the first in the next COT that can be used for signal transmission Time slot
- the initial detection OFDM symbol is any one of the first time slots available for signal transmission in the next COT that can be used for signal transmission
- COT is the OFDM symbol that can be used for signal transmission preempted by network equipment The time period of the transmission channel.
- the initial detection OFDM symbol is the first OFDM symbol that can be used for signal transmission in the first time slot that can be used for signal transmission in the next COT.
- the start detection OFDM symbol is the start Detect any OFDM symbol of the time slot that can be used to transmit signals; when the carrier frequency is less than or equal to the second carrier frequency and greater than or equal to the first carrier frequency, when the time slot offset is greater than or equal to 4
- the initial detection OFDM symbol is any OFDM symbol that can be used for signal transmission in the initial detection timeslot.
- the sending module 920 may be implemented by a transceiver.
- the processing module 930 may be implemented by a processor. The specific functions and beneficial effects of the sending module 920 and the processing module 930 can be referred to the method shown in FIG. 6, which will not be repeated here.
- FIG. 10 is a schematic structural diagram of a terminal device provided by another embodiment of the present application.
- the terminal device 1000 includes a transceiver 1010, a processor 1020, and a memory 1030.
- FIG. 10 Only one memory and processor are shown in Figure 10. In actual terminal equipment products, there may be one or more processors and one or more memories.
- the memory may also be referred to as a storage medium or storage device.
- the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
- the transceiver 1010, the processor 1020, and the memory 1030 communicate with each other through internal connection paths, and transfer control and/or data signals.
- the transceiver 1010 is configured to receive a common signal block sent by a network device, the common signal block includes indication information, and the indication information is used to indicate the time slot offset and/or the initial detection orthogonal frequency of the downlink control channel.
- OFDM symbols are multiplexed, and the slot offset is the offset between the slot where the common signal block is located and the start detection slot of the downlink control channel; according to the slot offset and/or the start Begin to detect OFDM symbols and detect the downlink control channel.
- FIG. 11 is a schematic structural diagram of a network device provided by another embodiment of the present application.
- the network device 1100 may include a transceiver 1110, a processor 1120, and a memory 1130.
- FIG. 11 Only one memory and processor are shown in Figure 11. In actual control equipment products, there may be one or more processors and one or more memories.
- the memory may also be referred to as a storage medium or storage device.
- the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
- the transceiver 1110, the processor 1120, and the memory 1130 communicate with each other through internal connection paths, and transfer control and/or data signals.
- the transceiver 1110 is used to send a common signal block to the terminal device, the common signal block includes indication information, the indication information is used to indicate the time slot offset and/or the initial detection orthogonal frequency division of the downlink control channel Multiplexing OFDM symbols, the slot offset is the offset between the slot where the common signal block is located and the start detection slot of the downlink control channel; according to the slot offset and/or the start The OFDM symbol is detected, and the downlink control information is sent on the downlink control channel.
- the common signal block includes indication information
- the indication information is used to indicate the time slot offset and/or the initial detection orthogonal frequency division of the downlink control channel Multiplexing OFDM symbols
- the slot offset is the offset between the slot where the common signal block is located and the start detection slot of the downlink control channel; according to the slot offset and/or the start The OFDM symbol is detected, and the downlink control information is sent on the downlink control channel.
- the transceiver in each embodiment of the present application may also be referred to as a transceiver unit, transceiver, transceiver, etc.
- the processor can also be called a processing unit, a processing board, a processing module, a processing device, and so on.
- the device for implementing the receiving function in the transceiver can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver as the sending unit, that is, the transceiver includes the receiving unit and the sending unit.
- the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit.
- the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
- the memory described in each embodiment of the present application is used to store computer instructions and parameters required for the operation of the processor.
- the processor described in each embodiment of the present application may be an integrated circuit chip with signal processing capability.
- the steps of the above method can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
- the processors described in the embodiments of the present application may be general-purpose processors, digital signal processors (digital signal processors, DSP), application specific integrated circuits (ASICs), and field programmable gate arrays (field programmable gate arrays). , FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
- the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
- the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
- the steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
- the software module can be located in random access memory (RAM), flash memory, read-only memory (read-only memory, ROM), programmable read-only memory, or electrically erasable programmable memory, registers, etc. mature in the field Storage medium.
- the storage medium is located in the memory, and the processor reads the instructions in the memory and completes the steps of the above method in combination with its hardware.
- the size of the sequence number of each process does not mean the order of execution.
- the execution order of each process should be determined by its function and internal logic, and should not constitute the implementation process of the embodiments of this application Any restrictions.
- the computer program product includes one or more computer instructions.
- the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
- the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
- the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
- the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)), etc.
- the disclosed system, device, and method may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
- the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
- the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
- the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
- the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
- the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .
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Abstract
本申请提供了用于传输下行控制信道的方法、终端设备和网络设备。该方法包括终端设备接收网络设备发送的公共信号块,该公共信号块包括指示信息,该指示信息用于指示该公共信号块所在时隙与该下行控制信道的起始检测时隙之间的时隙偏移量和/或下行控制信道的起始检测正交频分复用OFDM符号,该终端设备根据该时隙偏移量和/或该起始检测OFDM符号,检测该下行控制信道。上述技术方案中,终端设备在接收到的公共信号块之后的相对时隙或符号上检测下行控制信道,也就是说,终端设备在确定侦听结果是成功的情况下,紧跟着检测下行控制信道,这样可以提高下行控制信息接收成功的概率,从而提高终端设备的接入性能。
Description
本申请要求于2019年01月29日提交中国专利局、申请号为201910085512.5、申请名称为“用于传输下行控制信道的方法、终端设备和网络设备”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。
本申请涉及通信领域,并且更具体地涉及用于传输下行控制信道的方法、终端设备和网络设备。
终端设备要接入网络,必须首先进行小区搜索、获取小区***信息。小区搜索过程之后,终端设备已经与小区取得下行同步,终端设备需要进一步获取小区的***信息(system information),以便接入该小区并在该小区内正确地工作。其中,***信息由下行控制信道进行调度。
目前新空口(new radio,NR)协议定义了三种复用图样,用于同步信号块(synchronous signal block,SSB)和剩余最小***信息(remaining minimum system information,RMSI)控制资源集合(control resource set,CORESET)信号间的复用,如图1所示。模式1中SSB和RMSI CORESET位于不同的时刻,SSB的传输带宽与包含RMSI CORESET的初始激活(initial active)下行(downlink,DL)带宽区域(bandwidth part,BWP)重叠;模式2中SSB和RMSI CORESET位于不同的时刻,SSB的传输带宽与包含RMSI CORESET的初始激活下行带宽区域不重叠;模式3中SSB和RMSI CORESET位于相同的时刻,SSB的传输带宽与包含RMSI CORESET的初始激活下行带宽区域不重叠。
针对于模式1,在现有的RMSI CORESET的时域配置方式中,下行控制信道的起始检测时刻为绝对时间值,例如某个***帧内的第几个毫秒(ms),或某个时隙内的第几个正交频分多路复用(orthogonal frequency division multiplexing,OFDM)符号等。在非授权频段中,所有的数据传输都要依赖于信道侦听结果,也就是说数据传输前发射端需要先做信道侦听,只有侦听结果为成功时才会进行发送。因此,实际可发送下行控制信道的时机和位置都具有很大的不确定性。当发射端的信道侦听结果为失败时,在现有技术的时域配置方式配置的时域位置上,由于信道侦听结果失败下行控制信道实际却未能被发送,从而严重影响终端设备的接入性能。
发明内容
本申请提供检测下行控制信道的方法、终端设备和网络设备,能够使终端设备在非授权频段有效地接入网络。
第一方面,本申请提供了一种用于传输下行控制信道的方法,该方法包括:终端设备 接收网络设备发送的公共信号块,该公共信号块包括指示信息,该指示信息用于指示时隙偏移量和/或下行控制信道的起始检测正交频分复用OFDM符号,该时隙偏移量为该公共信号块所在时隙与该下行控制信道的起始检测时隙之间的偏移量;该终端设备根据该时隙偏移量和/或该起始检测OFDM符号,检测该下行控制信道。
当终端设备检测到公共信号块时,说明此时信道侦听结果是成功的,此时网络设备已经抢占到信道,因此有可用资源用来传输下行控制信道。上述技术方案中,终端设备在接收到的公共信号块之后的相对时隙或符号上检测下行控制信道,也就是说,终端设备在确定侦听结果是成功的情况下,紧跟着检测下行控制信道,这样可以提高下行控制信息接收成功的概率,从而提高终端设备的接入性能。
在一种可能的实现方式中,该终端设备根据该时隙偏移量和/或该起始检测OFDM符号,检测该下行控制信道,包括:该终端设备根据该时隙偏移量和该公共信号块所在时隙,确定该下行控制信道的起始检测时隙;该终端设备根据该起始检测OFDM符号和该起始检测时隙,确定该下行控制信道的起始检测位置;该终端设备根据该起始检测位置,检测该下行控制信道。
在上述技术方案中,终端设备同时根据时隙偏移量和下行控制信道的起始检测符号确定下行控制信道的起始检测位置,这样下行控制信道的起始检测位置可以是相对于公共信号块所在的时隙偏移后的某个时隙中的某个OFDM符号,可以灵活且准确地确定下行控制信道的起始检测位置。
在一种可能的实现方式中,针对该公共信号块的第一映射图样,所述时隙偏移量为1个时隙、2个时隙、3个时隙或4个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量,其中,该公共信号块的第一映射图样中公共信号块所占的首个OFDM符号的索引号为2或8。
在上述技术方案中,起始检测OFDM符号为起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,也就是说起始检测OFDM符号仅为起始检测时隙的首个或中间位置的OFDM符号,这样可以减小指示信息的种类,进而减小信令开销。
在一种可能的实现方式中,针对该公共信号块的第一映射图样,该时隙偏移量为0,该起始检测OFDM符号为该公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号,其中,该公共信号块的第一映射图样中该公共信号块所占的首个OFDM符号的索引号为2或8。
在上述技术方案中,当下行控制信道的起始检测时隙为公共信号块所在的时隙时,起始检测符号为公共信号块所占的最后一个OFDM符号之后的第一个或者第二个OFDM符号,从而可以避开同一时隙内的公共信号块。
在一种可能的实现方式中,针对该公共信号块的第二映射图样,该时隙偏移量为1个时隙或2个时隙,该起始检测OFDM符号为该起始检测时隙的索引号为0的OFDM符号或索引号为12的OFDM符号,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。通过上述技术方案,下行控制信道的映射可以避开同一时隙内的公共信号块。
在一种可能的实现方式中,针对公共信号块的第二映射图样,该时隙偏移量为3个时隙或4个时隙,该起始检测OFDM符号为该起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。
在上述技术方案中,起始检测OFDM符号为起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,也就是说起始检测OFDM符号仅为起始检测时隙的首个或中间位置的OFDM符号,这样可以减小指示信息的种类,进而减小信令开销。
在一种可能的实现方式中,针对该公共信号块的第二映射图样,当该公共信号块所在时隙的索引号为偶数时,该时隙偏移量为0,该起始检测OFDM符号为该公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。通过上述技术方案,下行控制信道的映射可以避开同一时隙内的公共信号块。
在一种可能的实现方式中,针对该公共信号块的第二映射图样,当该公共信号块所在时隙的索引号为奇数时,该时隙偏移量为0,该起始检测OFDM符号为该公共信号块所占的最后一个OFDM符号之后的第1个或第3个OFDM符号,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。通过上述技术方案,下行控制信道的映射可以避开同一时隙内的公共信号块。
在一种可能的实现方式中,在该时隙偏移量指示该起始检测时隙在该公共信号块所在COT的下一个COT时,该起始检测时隙为该下一个COT中的首个可用于传输信号的时隙,和/或该起始检测OFDM符号为该下一个COT中首个可用于传输信号的时隙的任意一个可用于传输信号的OFDM符号,其中,COT为网络设备抢占到的可用于传输信道的时间段。
考虑到终端设备检测到公共信号块的时刻可能位于COT内相对靠后的位置,此时网络设备在抢占到的COT时间段内可能没有可用资源用来传输此下行控制信道。在此情况下,上述技术方案在下一个COT内接收下行控制信道,这样可以提高下行控制信息接收成功的概率,从而提高终端设备的接入性能。
在一种可能的实现方式中,该起始检测OFDM符号为该下一个COT中首个可用于传输信号的时隙的首个可用于传输信号的OFDM符号。
在一种可能的实现方式中,在载频小于或者等于第一载频频率的情况下,当该时隙偏移量大于或者等于2个时隙时,该起始检测OFDM符号为该起始检测时隙的任意一个可用于传输信号的OFDM符号;在载频小于或者等于第二载频频率且大于或者等于该第一载频频率的情况下,当该时隙偏移量大于或者等于4个时隙时,该起始检测OFDM符号为该起始检测时隙的任意一个可用于传输信号的OFDM符号。
网络设备在一个窗口中需发送的公共信号块的最大数量与网络设备的载频频率有关,例如,当载频频率小于3GHz时,需发送的公共信号块的数量为4,一个时隙中可以传输2个公共信号块,那么一个5ms的窗口中仅需2个时隙即可完成4个公共信号块的传输,例如前2个时隙中传输公共信号块,后3个时隙中没有公共信号块的传输,则在后3个时 隙中无需再避开公共信号块占用的OFDM符号。
第二方面,本申请提供了一种用于传输下行控制信道的方法,该方法包括:网络设备向终端设备发送公共信号块,该公共信号块包括指示信息,该指示信息用于指示时隙偏移量和/或下行控制信道的起始检测正交频分复用OFDM符号,该时隙偏移量为该公共信号块所在时隙与该下行控制信道的起始检测时隙之间的偏移量;该网络设备根据该时隙偏移量和/或该起始检测OFDM符号,在该下行控制信道上发送下行控制信息。
当终端设备检测到公共信号块时,说明此时信道侦听结果是成功的,此时网络设备已经抢占到信道,因此有可用资源用来传输下行控制信道。上述技术方案中,网络设备在发送公共信号块之后的相对时隙或符号上在下行控制信道上传输下行控制信息,也就是说,网络设备在确定侦听结果是成功的情况下,紧跟着在下行控制信道上传输下行控制信息,这样可以提高下行控制信息发送成功的概率,从而提高终端设备的接入性能。
在一种可能的实现方式中,该网络设备根据该时隙偏移量和/或该起始检测OFDM符号,在该下行控制信道上发送下行控制信息,包括:该网络设备根据该时隙偏移量和该公共信号块所在时隙,确定该下行控制信道的起始检测时隙;该网络设备根据该起始检测OFDM符号和该起始检测时隙,确定该下行控制信道的起始检测位置;该网络设备根据该起始检测位置,在该下行控制信道上发送下行控制信息。
在上述技术方案中,网络设备同时根据时隙偏移量和下行控制信道的起始检测符号确定下行控制信道的起始检测位置,这样下行控制信道的起始检测位置可以是相对于公共信号块所在的时隙偏移后的某个时隙中的某个OFDM符号,可以灵活且准确地确定下行控制信道的起始检测位置。
在一种可能的实现方式中,针对该公共信号块的第一映射图样,该时隙偏移量为1个时隙、2个时隙、3个时隙或4个时隙,该起始检测OFDM符号为该起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量,其中,该公共信号块的第一映射图样中该公共信号块所占的首个OFDM符号的索引号为2或8。
在上述技术方案中,起始检测OFDM符号为起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,也就是说起始检测OFDM符号仅为起始检测时隙的首个或中间位置的OFDM符号,这样可以减小指示信息的种类,进而减小信令开销。
在一种可能的实现方式中,针对该公共信号块的第一映射图样,该时隙偏移量为0,该起始检测OFDM符号为该公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号,其中,该公共信号块的第一映射图样中该公共信号块所占的首个OFDM符号的索引号为2或8。
在上述技术方案中,当下行控制信道的起始检测时隙为公共信号块所在的时隙时,起始检测符号为公共信号块所占的最后一个OFDM符号之后的第一个或者第二个OFDM符号,从而可以避开同一时隙内的公共信号块。
在一种可能的实现方式中,针对该公共信号块的第二映射图样,该起始检测OFDM符号为该起始检测时隙的索引号为0的OFDM符号或索引号为12的OFDM符号,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6 或8。通过上述技术方案,下行控制信道的映射可以避开同一时隙内的公共信号块。
在一种可能的实现方式中,针对该公共信号块的第二映射图样,该时隙偏移量为3个时隙或4个时隙,该起始检测OFDM符号为该起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。
在上述技术方案中,起始检测OFDM符号为起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,也就是说起始检测OFDM符号仅为起始检测时隙的首个或中间位置的OFDM符号,这样可以减小指示信息的种类,进而减小信令开销。
在一种可能的实现方式中,针对该公共信号块的第二映射图样,当该公共信号块所在时隙的索引号为偶数时,该时隙偏移量为0,该起始检测OFDM符号为该公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。通过上述技术方案,下行控制信道的映射可以避开同一时隙内的公共信号块。
在一种可能的实现方式中,针对该公共信号块的第二映射图样,当该公共信号块所在时隙的索引号为奇数时,该时隙偏移量为0,该起始检测OFDM符号为该公共信号块所占的最后一个OFDM符号之后的第1个或第3个OFDM符号,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。通过上述技术方案,下行控制信道的映射可以避开同一时隙内的公共信号块。
在一种可能的实现方式中,在该时隙偏移量指示该起始检测时隙在该公共信号块所在COT的下一个COT时,该起始检测时隙为该下一个COT中的首个可用于传输信号的时隙,和/或该起始检测OFDM符号为该下一个COT中首个可用于传输信号的时隙的任意一个可用于传输信号的OFDM符号,其中,COT为网络设备抢占到的可用于传输信道的时间段。
考虑到终端设备检测到公共信号块的时刻可能位于COT内相对靠后的位置,此时网络设备在抢占到的COT时间段内可能没有可用资源用来传输此下行控制信道。在此情况下,上述技术方案在下一个COT内接收下行控制信道,这样可以提高下行控制信息接收成功的概率,从而提高终端设备的接入性能。
在一种可能的实现方式中,该起始检测OFDM符号为该下一个COT中首个可用于传输信号的时隙的首个可用于传输信号的OFDM符号。
在一种可能的实现方式中,在载频小于或者等于第一载频频率的情况下,当该时隙偏移量大于或者等于2个时隙时,该起始检测OFDM符号为该起始检测时隙的任意一个可用于传输信号的OFDM符号;在载频小于或者等于第二载频频率且大于或者等于该第一载频频率的情况下,当该时隙偏移量大于或者等于4个时隙时,该起始检测OFDM符号为该起始检测时隙的任意一个可用于传输信号的OFDM符号。
网络设备在一个窗口中需发送公共信号块的最大数量与网络设备的载频频率有关,例如,当载频频率小于3GHz时,需发送的公共信号块的数量为4,一个时隙中可以传输2个公共信号块,那么一个5ms的窗口中仅需2个时隙即可完成4个公共信号块的传输,例 如前2个时隙中传输公共信号块,后3个时隙中没有公共信号块的传输,则在后3个时隙中无需再避开公共信号块占用的OFDM符号。
第三方面,本申请提供了一种终端设备,包括用于执行第一方面或第一方面任意一种实现方式中的模块。
第四方面,本申请提供了一种网络设备,包括用于执行第二方面或第二方面任意一种实现方式中的模块。
第五方面,本申请提供了一种芯片,所述芯片与存储器相连,用于读取并执行所述存储器中存储的软件程序,以实现第一方面或第一方面任意一种实现方式所述的方法。
第六方面,本申请提供了一种芯片,所述芯片与存储器相连,用于读取并执行所述存储器中存储的软件程序,以实现第二方面或第二方面任意一种实现方式所述的方法。
第七方面,本申请提供了一种终端设备,包括收发器、处理器和存储器,用于执行第一方面或第一方面任意一种实现方式所述的方法。
第八方面,本申请提供了一种网络设备,包括收发器、处理器和存储器,用于执行第二方面或第二方面任意一种实现方式所述的方法。
第九方面,本申请提供了一种计算机可读存储介质,包括指令,当其在终端设备上运行时,使得终端设备执行第一方面或第一方面任意一种实现方式所述的方法。
第十方面,本申请提供了一种计算机可读存储介质,包括指令,当其在网络设备上运行时,使得网络设备执行第二方面或第二方面任意一种实现方式所述的方法。
第十一方面,本申请提供了一种计算机程序产品,当其在终端设备上运行时,使得终端设备执行第一方面或第一方面任意一种实现方式所述的方法。
第十二方面,本申请提供了一种计算机程序产品,当其在网络设备上运行时,使得网络设备执行第二方面或第二方面任意一种实现方式所述的方法。
第十三方面,本申请提供一种通信***,所述通信***包括上述第三方面或第七方面所述的终端设备以及第四方面或第八方面所述的网络设备。
图1是同步信号块和RMSI CORESET复用图样的示意图。
图2是根据本申请实施例的同步信号块分布的示意图。
图3是本申请实施例的公共信号块的第一映射图样。
图4是本申请实施例的公共信号块的第二映射图样。
图5是本申请另一实施例的公共信号块的第一映射图样。
图6是本申请实施例的用于传输下行控制信道的方法的示意性流程图。
图7是本申请实施例跨COT指示起始检测时隙或符号的示意图。
图8是根据本申请实施例的终端设备的示意性结构图。
图9是根据本申请实施例提供的网络设备的示意性结构图。
图10是根据本申请另一实施例提供的终端设备的示意性结构图。
图11是根据本申请另一实施例提供的网络设备的示意性结构图。
下面将结合附图,对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信***,例如:全球移动通信(global system for mobile communications,GSM)***、码分多址(code division multiple access,CDMA)***、宽带码分多址(wideband code division multiple access,WCDMA)***、通用分组无线业务(general packet radio service,GPRS)、长期演进(long term evolution,LTE)***、LTE频分双工(frequency division duplex,FDD)***、LTE时分双工(time division duplex,TDD)、通用移动通信***(universal mobile telecommunication system,UMTS)、全球互联微波接入(worldwide interoperability for microwave access,WiMAX)通信***、未来的第五代(5th generation,5G)***或新无线(new radio,NR)等。
本申请实施例中的终端设备可以指用户设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol,SIP)电话、无线本地环路(wireless local loop,WLL)站、个人数字助理(personal digital assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备,未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network,PLMN)中的终端设备等。
可选地,终端设备之间可以进行终端直连(device to device,D2D)通信。
本申请实施例中的网络设备可以是用于与终端设备通信的设备,该网络设备可以是全球移动通信(global system for mobile communications,GSM)***或码分多址(code division multiple access,CDMA)中的基站(base transceiver station,BTS),也可以是宽带码分多址(wideband code division multiple access,WCDMA)***中的基站(NodeB,NB),还可以是LTE***中的演进型基站(evolved NodeB,eNB或eNodeB),还可以是云无线接入网络(cloud radio access network,CRAN)场景下的无线控制器,或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等,本申请实施例并不限定。
应理解,本申请中术语“***”和“网络”在本文中常被可互换使用。本申请中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
本申请中的公共信号块可以是可以实现网络设备和终端设备的时频同步,以及终端设备接入网络的任意信号块。例如,公共信号块可以是同步信号/广播信道块(synchronous signal/physical broadcast channel block,SS/PBCH Block或SSB)等。下面为表述方便起见,统称同步信号/广播信道块为同步信号块,应理解二者只是名字不同,内容上是等价的。
以同步信号块为例,一个同步信号块占用4个连续的OFDM符号,其中包含NR-PSS,NR-SSS和NR-PBCH。同步信号块采用周期传输,在同步信号块周期之内,特定频点的SS簇集合(SS burst set)可以限制在5ms的时间窗口内进行映射,最大可传输的同步信号块数目为L,其中,对于3GHz以内的频率范围内,L=4,对于3GHz到6GHz的频率范围内,L=8。
其中,在5ms的时间窗口内,对于不同的子载波间隔以及不同的工作频段,同步信号 块的时隙分布可以如图2所示,其中,每个方块为一个时隙,一个时隙内可以最多包括两个同步信号块。
图3是本申请实施例的公共信号块的第一映射图样。该第一映射图样对应于子载波间隔为15KHz的情况A。其中,图3中每个方块可以代表一个OFDM符号(也可以称为时域符号、符号位置或时域符号位置等),方块内的数字编号可以代表OFDM符号的索引。每行的第一个方块代表一个时隙的第一个OFDM符号,连续14个OFDM符号为1个时隙。相同线条填充的连续四个OFDM符号(例如,编号为2、3、4、5)可以认为是同步信号块的一个候选时域位置。其中,图3的第一行示出了在子载波间隔15KHz的情况下,时隙内的同步信号块的映射图样。
可选地,同步信号块的候选时域位置的第一个OFDM符号的索引号为{2,8}+14*n。对于3GHz以内的频率范围内(L=4),n=0,1;对于3GHz到6GHz频率范围内(L=8),n=0,1,2,3。
图4是本申请实施例的公共信号块的第二映射图样。该第二映射图样对应子载波间隔为30KHz的情况B。其中,图4中每个方块可以代表一个OFDM符号(也可以称为时域符号、符号位置或时域符号位置等),方块内的数字编号可以代表OFDM符号的索引。每行的第一个方块代表一个时隙的第一个OFDM符号,连续14个OFDM符号为1个时隙。相同线条填充的连续四个OFDM符号(例如,编号为4、5、6、7)可以认为是同步信号块的一个候选时域位置。其中,图4的第二行示出了在子载波间隔30KHz的情况下,时隙内的同步信号块的映射图样。可选地,同步信号块的候选时域位置的第一个OFDM符号的索引号为{4,8,16,20}+28*n。对于3GHz以内的频率范围内(L=4),n=0;对于3GHz到6GHz频率范围内(L=8),n=0,1。
图5是本申请另一实施例的公共信号块的第一映射图样。该映射图样对应于子载波间隔为30KHz的情况C。其中,图5中每个方块可以代表一个OFDM符号(也可以称为时域符号、符号位置或时域符号位置等),方块内的数字编号可以代表OFDM符号的索引。每行的第一个方块代表一个时隙的第一个OFDM符号,连续14个OFDM符号为1个时隙。相同线条填充的连续四个OFDM符号(例如,编号为2、3、4、5)可以认为是同步信号块的一个候选时域位置。其中,图5的第二行示出了在子载波间隔30KHz的情况下,时隙内的同步信号块的映射图样。
可选地,同步信号块的候选时域位置的第一个OFDM符号的索引号为{2,8}+14*n。对于3GHz以内的频率范围内(L=4),n=0,1;对于3GHz到6GHz频率范围内(L=8),n=0,1,2,3。
应理解,图2至图5仅以15KHz与30KHz为例,子载波间隔还可以是其他子载波间隔,例如60KHz、120KHz、240KHz等;图2至图5仅以载频频率在3GHz以内和在3GHz至6GHz内为例,载频频率还可以是6GHz至52.6GHz等。
由于NR支持多种子载波间隔以及灵活繁杂的公共信号块的时域配置,因此对于与公共信号块对应的RMSI CORESET的时域配置需要重新设计,而且在现有技术的时域配置方式配置的时域位置,下行控制信道存在实际未能发送的情况,影响终端设备的接入性能。
本申请提供用于传输下行控制信道的方法,充分考虑公共信号块与下行控制信道的复用图样、公共信号块在时隙内的映射图样以及信道侦听结果,可以提高下行控制信息接收 成功的概率,从而提高终端设备的接入性能。
图6是本申请实施例的用于传输下行控制信道的方法的示意性流程图。图6所示的方法可以包括以下内容的至少部分内容。
在610中,网络设备向终端设备发送公共信号块,公共信号块包括指示信息,指示信息用于指示时隙偏移量和/或下行控制信道的起始检测正交频分复用OFDM符号,时隙偏移量为公共信号块所在时隙与下行控制信道的起始检测时隙之间的偏移量。
可选地,网络设备可以通过指示OFDM符号的索引号指示下行控制信道的起始检测OFDM符号,也可以直接指示为时隙中的第几个OFDM号。
在620中,网络设备根据时隙偏移量和/或起始检测OFDM符号,在下行控制信道上发送下行控制信息。
在630中,终端设备根据时隙偏移量和/或起始检测OFDM符号,检测下行控制信道。
本申请中的公共信号块可以是能实现网络设备和终端设备的时频同步,以及终端设备接入网络的任意信号块。例如,公共信号块可以是同步信号/广播信道块等。
当终端设备检测到公共信号块的情况下,说明此时网络设备的信道侦听结果是成功的,此时网络设备有可用传输资源用来传输下行控制信道。上述技术方案中,终端设备在接收到的公共信号块之后的相对时隙或符号上检测下行控制信道,也就是说,终端设备在确定侦听结果是成功的情况下,紧跟着检测下行控制信道,这样可以提高下行控制信息接收成功的概率,从而提高终端设备的接入性能。
在一些实施例中,指示信息指示公共信号块所在时隙与下行控制信道的起始检测时隙之间的时隙偏移量。网络设备根据该时隙偏移量在下行控制信道上发送下行控制信息,终端设备根据该时隙偏移量检测下行控制信道。也就是说,下行控制信道的起始检测时隙可以是检测到公共信号块之后的某个相对时隙。
具体地,网络设备根据该时隙偏移量和公共信号块所在时隙,确定下行控制信道的起始检测时隙,并根据确定的起始检测时隙在下行控制信道上发送下行控制信息,而终端设备同样根据该时隙偏移量和公共信号块所在的时隙,确定下行控制信道的起始检测时隙,并根据确定的起始检测时隙检测下行控制信道。
可选地,网络设备可以在起始检测时隙中的任意一个OFDM符号发送下行控制信息,终端设备可以从起始检测时隙中的首个OFDM符号开始检测下行控制信息。
例如,由图2可以看出,当L=4,时隙偏移量为2时,在传输公共信号块的时隙之后的第二个时隙(也即一个5ms窗口的第三个时隙)中并没有公共信号块发送,因此网络设备可以在一个5ms窗口的第三个时隙的任意一个OFDM符号发送下行控制信息,而终端设备可以从一个5ms窗口的第三个时隙开始检测下行控制信道。L为其他值时,方法类似。
可选地,网络设备为终端设备预配置了下行控制信道的起始检测OFDM符号,该起始检测OFDM符号可以指在某个时隙中的绝对位置,例如,索引号为0的OFDM符号,该时隙的第3个OFDM符号等,此时网络设备无需再指示终端设备相对起始检测OFDM符号。
例如,网络设备为终端设备预配置的起始检测OFDM符号为索引号为7的OFDM符号,那么网络设备在确定的起始检测时隙中的索引号为7的OFDM符号传输下行控制信息,终端设备可以从确定的起始检测时隙中的索引号为7的OFDM符号开始检测下行控 制信道。
在另一些实施例中,指示信息指示下行控制信道的起始检测OFDM符号。网络设备根据该起始检测OFDM符号在下行控制信道上发送下行控制信息,终端设备根据该起始检测OFDM符号检测下行控制信道。也就是说,下行控制信道的起始检测OFDM符号可以是检测到公共信号块的所在时隙中公共信号块之后的某个相对OFDM符号。
具体地,网络设备根据该OFDM符号和公共信号块所在时隙,确定下行控制信道的起始检测位置,并根据确定的起始检测位置在下行控制信道上发送下行控制信息,而终端设备同样根据该起始检测OFDM符号和公共信号块所在时隙,确定下行控制信道的起始检测位置,并根据确定的起始检测位置检测下行控制信道。
可选地,网络设备可以通过指示相对于公共信号块所占的最后一个OFDM符号需要偏移的OFDM符号数,来指示起始检测OFDM符号。
例如,一个时隙包括14个符号,公共信号块所占的最后一个OFDM符号为索引号为11的OFDM符号,网络设备指示的OFDM符号数为15,意味着网络设备可以在公共信号块所在时隙的下一个时隙的索引号为12的OFDM符号上发送下行控制信息,终端设备可以在公共信号块所在时隙的下一个时隙的索引号为12的OFDM符号上开始检测下行控制信道。
可选地,网络设备为终端设备预配置时隙偏移量,此时网络设备无需再指示终端设备时隙偏移量。这里的预配置指的是时隙偏移量是基站和终端间预定义好的意思,因此不需要显式指示了。
例如,网络设备为终端设备预配置的时隙偏移量为2个时隙,并指示终端设备起始检测OFDM符号为索引号为7的OFDM符号,那么网络设备在公共信号块所在时隙之后的第二个时隙中索引号为7的OFDM符号发送下行控制信息,终端设备可以从在公共信号块所在时隙之后的第二个时隙中索引号为7的OFDM符号开始检测下行控制信道。
在另一些实施例中,指示信息指示公共信号块所在时隙与下行控制信道的起始检测时隙之间的时隙偏移量和下行控制信道的起始检测正交频分复用OFDM符号。
具体地,网络设备根据时隙偏移量和公共信号块所在时隙,确定该下行控制信道的起始检测时隙,进一步地网络设备根据起始检测OFDM符号和起始检测时隙,确定下行控制信道的起始检测位置,并根据该起始检测位置,在该下行控制信道上发送下行控制信息;终端设备根据时隙偏移量和公共信号块所在时隙,确定下行控制信道的起始检测时隙,进一步地根据起始检测OFDM符号和起始检测时隙,确定下行控制信道的起始检测位置,并根据起始检测位置,检测该下行控制信道。
对于下行控制信道传输资源的具体配置应该充分考虑公共信号块的映射图样以及信道侦听结果。
下行控制信道传输资源的配置应该尽可能避开公共信号块的传输资源。因此,在一个时隙中,可以用于传输下行控制信道的符号为在公共信号块之后且未被公共信号块占用的OFDM符号。
在一些实施例中,当时隙偏移量为0,也即下行控制信道与公共信号块在同一个时隙中时,起始检测OFDM符号可以为公共信号块所占的最后一个OFDM符号之后以及下一个公共信号块所占的首个OFDM符号之前的OFDM符号。
例如,如图3和图5所示,起始检测OFDM符号可以是公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号,即索引号为6、7、12或13的OFDM符号。如图4所示,当公共信号块所在时隙的索引号为偶数时,起始检测OFDM符号可以是公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号,即索引号为12或13的OFDM符号,当公共信号块所在时隙的索引号为奇数时,起始检测OFDM符号可以是公共信号块所占的最后一个OFDM符号之后的第1个、第2个、第3个或第4个OFDM符号,即索引号为10、11、12或13的OFDM符号。
在另一些实施例中,当时隙偏移量为不为0时,也即下行控制信道与公共信号块在不同时隙中时,起始检测OFDM符号可以为起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量,其中K可以为大于或者等于1的整数。可选地,时隙偏移量为1个时隙、2个时隙、3个时隙或4个时隙。
在另一些实施例中,当时隙偏移量为不为0时,也即下行控制信道与公共信号块在不同时隙中时,起始检测OFDM符号可以为起始检测时隙的索引号为0的OFDM符号或索引号为12的OFDM符号。可选地,时隙偏移量为1个时隙或2个时隙。
在另一些实施例中,当时隙偏移量不为0且大于或者等于L/2(L为一个时间窗口需传输的公共信号块的最大个数)时,起始检测OFDM符号为起始检测时隙的任意一个可用于传输信号的OFDM符号。由于L与载频频率有关,也就是说,当载频小于或者等于第一载频频率的情况下,当所述时隙偏移量大于或者等于L/2个时隙时,起始检测OFDM符号为起始检测时隙的任意一个可用于传输信号的OFDM符号;在载频小于或者等于第二载频频率且大于或者等于所述第一载频频率的情况下,当时隙偏移量大于或者等于L/2个时隙时,起始检测OFDM符号为起始检测时隙的任意一个可用于传输信号的OFDM符号。
可选地,第一载频频率可以为3GHz、2.4GHz等,第二载频频率可以为6GHz、7GHz等。
例如,当第一载频频率为3GHz,当时隙偏移量大于或者等于2个时隙时,起始检测OFDM符号为起始检测时隙的任意一个可用于传输信号的OFDM符号;当第一载频频率为3GHz,第二载频频率为6GHz,当时隙偏移量大于或者等于4个时隙时,起始检测OFDM符号为起始检测时隙的任意一个可用于传输信号的OFDM符号。
可选地,时隙偏移量的最大取值与传输公共信号块的时间窗口的取值和时隙的大小或子载波间隔有关。例如,传输公共信号块的时间窗口为5ms,1ms为一个时隙(对应15kHz子载波间隔),那么时隙偏移量的最大值可以为4个时隙;传输公共信号块的时间窗口为5ms,0.5ms为一个时隙(对应30kHz子载波间隔),那么时隙偏移量的最大值可以为9个时隙。
在另一些实施例中,如图7所示,考虑到终端设备检测到公共信号块的时刻可能位于可用于传输数据的信道占用时间(channel occupancy time,COT)内相对靠后的位置,因此,下行控制信道的发送和检测可以在下一个COT中,也就是说,指示信息指示的相对于检测到公共信号块的时域偏移量指示可以是跨COT的。
可选地,在时隙偏移量指示的起始检测时隙在公共信号块所在COT的下一个COT时, 起始检测时隙为下一个COT中的首个可用于传输信号的时隙,和/或起始检测OFDM符号为下一个COT中首个可用于传输信号的时隙的任意一个可用于传输信号的OFDM符号。
可选地,起始检测OFDM符号为下一个COT中首个可用于传输信号的时隙的首个可用于传输信号的OFDM符号。
下面结合具体例子对本身申请实施例的下行控制信道传输资源的时域配置进行详细描述。表1、表2和表3为在不同情况下下行控制信道传输资源的时域配置表。应理解,表1、表2和表3仅为示例性的。表1、表2和表3中可以包括更少或者更多的内容。表1、表2和表3中的各种术语也可以是其他称法,例如,配置索引也可以是索引、起始检测OFDM符号索引S也可以是符号索引等。
表1和/或表2和/或表3存储在终端设备和网络设备中,网络设备发送的公共信号块的指示信息可以指示表1、表2和表3中的配置索引,当终端设备接收到公共信号块后,根据指示信息指示的配置索引和表1、表2或表3确定时隙偏移量和起始检测OFDM符号,进而确定下行控制信道的起始检测位置。其中,表格中配置索引的编号可以为从1开始的编号方式,也可以是从0开始的编号方式,均在本申请的保护范围内。
表1针对公共信号块映射图样的情况A(如图3所示)和情况C(如图5所示),其中,n
SSB代表终端设备检测到公共信号块的时隙索引号,S
SSB代表终端设备检测到SSB的最后一个OFDM符号索引号,n
SSB+offset1代表终端设备检测到SSB的时隙作为起点偏移offset1个时隙,而S
SSB+offset2代表终端设备检测到SSB的最后一个OFDM符号作为起点偏移offset2个OFDM符号。M为控制信道资源集合间隔。N为每个时隙中搜索空间集的数量(也可以称为一个时隙中RMSI CORESET的数量)。M和N互为倒数。例如,当N=1时,终端设备在索引号为0或7的OFDM符号开始检测下行控制信道,当N=2时,终端设备分别在索引号为0和7的OFDM符号开始检测下行控制信道。
表1
表2针对公共信号块映射图样的情况B(如图4所示),其中,n
SSB代表终端设备检测到公共信号块的时隙索引号,n
SSB+offset1代表终端设备检测到SSB的时隙作为起点偏移offset1个时隙。M为控制信道资源集间隔。N为每个时隙中搜索空间集的数量(也可以称为一个时隙中RMSI CORESET的数量)。M和N互为倒数。例如,当N=1时,终端设备在索引号为0或7的OFDM符号开始检测下行控制信道,当N=2时,终端设备分别在索引号为0和7的OFDM符号开始检测下行控制信道。
表2
考虑到终端设备检测到公共信号块的时刻可能位于COT内相对靠后的位置,因此,下行控制信道的发送和检测可以在下一个COT中。表3针对公共信号块映射图样的情况A和情况C,且存在下行控制信道的发送和检测在下一个COT的情况。其中n
SSB代表终端设备检测到公共信号块的时隙索引号,S
SSB代表终端设备检测到SSB的最后一个OFDM符号索引号,n
SSB+offset1代表终端设备检测到SSB的时隙作为起点偏移offset1个时隙,而S
SSB+offset2代表终端设备检测到SSB的最后一个OFDM符号作为起点偏移offset2个OFDM符号。M为搜索空间集间隔。N为每个时隙中搜索空间集的数量(也可以称为一个时隙中RMSI CORESET的数量)。例如,当N=1时,终端设备在索引号为0或7的OFDM符号开始检测下行控制信道,当N=2时,终端设备分别在索引号为0和7的OFDM符号开始检测下行控制信道。
n
SSB+x,这里x代表下行控制信道的起始检测时隙为下一个COT内的第一个可传输信 号的时隙。
可选地,下一个COT内的第一个可传输时隙通过初始信号或唤醒信号,如wake up信号进行识别。
S代表下行控制信道的起始检测OFDM符号为下一个COT内的第一个可传输信号的时隙中的某个符号。
可选地,下行控制信道的起始检测OFDM符号可以为下一个COT内的第一个可传输信号的时隙中的第一个可用符号。
可选地,下行控制信道的起始检测OFDM符号可以是由初始信号或唤醒信号,如wake up信号识别的第一个OFDM符号。
表3
下面结合图8至图11对本申请的装置实施例进行描述。
图8是本申请实施例的终端设备的示意性结构图。图8所示的终端设备800可以对应于上文的终端设备,如图8所示,终端设备800包括接收模块810、检测模块820。
接收模块810,用于接收网络设备发送的公共信号块,该公共信号块包括指示信息,该指示信息用于指示时隙偏移量和/或下行控制信道的起始检测正交频分复用OFDM符号,该时隙偏移量为该公共信号块所在时隙与该下行控制信道的起始检测时隙之间的偏移量。
检测模块820,用于根据该时隙偏移量和/或该起始检测OFDM符号,检测该下行控制信道。
可选地,终端设备800还包括处理模块830,用于根据该时隙偏移量和该公共信号块所在时隙,确定该下行控制信道的起始检测时隙;根据该起始检测OFDM符号和该起始 检测时隙,确定该下行控制信道的起始检测位置。检测模块820,具体用于根据该起始检测位置,检测该下行控制信道。
可选地,针对该公共信号块的第一映射图样中,所述时隙偏移量为1个时隙、2个时隙、3个时隙或4个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量。其中,该公共信号块的第一映射图样中公共信号块所占的首个OFDM符号的索引号为2或8。
可选地,针对该公共信号块的第一映射图样,该时隙偏移量为0,该起始检测OFDM符号为该公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号,其中,该公共信号块的第一映射图样中该公共信号块所占的首个OFDM符号的索引号为2或8。
可选地,针对该公共信号块的第二映射图样,该时隙偏移量为1个时隙或2个时隙,该起始检测OFDM符号为该起始检测时隙的索引号为0的OFDM符号或索引号为12的OFDM符号,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。
可选地,针对公共信号块的第二映射图样,该时隙偏移量为3个时隙或4个时隙,该起始检测OFDM符号为该起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。
可选地,针对该公共信号块的第二映射图样,当该公共信号块所在时隙的索引号为偶数时,该时隙偏移量为0,该起始检测OFDM符号为该公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。
可选地,针对该公共信号块的第二映射图样,当该公共信号块所在时隙的索引号为奇数时,该时隙偏移量为0,该起始检测OFDM符号为该公共信号块所占的最后一个OFDM符号之后的第1个或第3个OFDM符号,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。
可选地,在该时隙偏移量指示该起始检测时隙在该公共信号块所在COT的下一个COT时,该起始检测时隙为该下一个COT中的首个可用于传输信号的时隙,和/或该起始检测OFDM符号为该下一个COT中首个可用于传输信号的时隙的任意一个可用于传输信号的OFDM符号,其中,COT为网络设备抢占到的可用于传输信道的时间段。
可选地,该起始检测OFDM符号为该下一个COT中首个可用于传输信号的时隙的首个可用于传输信号的OFDM符号。
可选地,在载频小于或者等于第一载频频率的情况下,当该时隙偏移量大于或者等于2个时隙时,该起始检测OFDM符号为该起始检测时隙的任意一个可用于传输信号的OFDM符号;在载频小于或者等于第二载频频率且大于或者等于该第一载频频率的情况下,当该时隙偏移量大于或者等于4个时隙时,该起始检测OFDM符号为该起始检测时隙的任意一个可用于传输信号的OFDM符号。
接收模块810和检测模块820可以由收发器实现。处理模块830可以由处理器实现。 接收模块810、检测模块820和处理模块830的具体功能和有益效果可以参见图6所示的方法,在此就不再赘述。
图9是根据本申请实施例提供的网络设备的示意性结构图。图9中的网络设备900可以对应于上文的网络设备,如图9所示,网络设备900包括发送模块920。
发送模块920,用于向终端设备发送公共信号块,该公共信号块包括指示信息,该指示信息用于指示时隙偏移量和/或下行控制信道的起始检测正交频分复用OFDM符号,该时隙偏移量为该公共信号块所在时隙与该下行控制信道的起始检测时隙之间的偏移量;用于根据该时隙偏移量和/或该起始检测OFDM符号,在该下行控制信道上发送下行控制信息。
可选地,网络设备900还包括处理模块930,用于根据该时隙偏移量和该公共信号块所在时隙,确定该下行控制信道的起始检测时隙;根据该起始检测OFDM符号和该起始检测时隙,确定该下行控制信道的起始检测位置。发送模块920,具体用于根据该起始检测位置,在该下行控制信道上发送下行控制信息。
可选地,针对该公共信号块的第一映射图样,该时隙偏移量为1个时隙、2个时隙、3个时隙或4个时隙,该起始检测OFDM符号为该起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量,其中,该公共信号块的第一映射图样中该公共信号块所占的首个OFDM符号的索引号为2或8。
可选地,针对该公共信号块的第一映射图样,该时隙偏移量为0,该起始检测OFDM符号为该公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号,其中,该公共信号块的第一映射图样中该公共信号块所占的首个OFDM符号的索引号为2或8。
可选地,针对该公共信号块的第二映射图样,该起始检测OFDM符号为该起始检测时隙的索引号为0的OFDM符号或索引号为12的OFDM符号,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。
可选地,针对该公共信号块的第二映射图样,该时隙偏移量为3个时隙或4个时隙,该起始检测OFDM符号为该起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。
可选地,针对该公共信号块的第二映射图样,当该公共信号块所在时隙的索引号为偶数时,该时隙偏移量为0,该起始检测OFDM符号为该公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。
可选地,针对该公共信号块的第二映射图样,当该公共信号块所在时隙的索引号为奇数时,该时隙偏移量为0,该起始检测OFDM符号为该公共信号块所占的最后一个OFDM符号之后的第1个或第3个OFDM符号,其中,该公共信号块的第二映射图样中该公共信号块所占的首个OFDM符号的索引号为2、4、6或8。
可选地,在该时隙偏移量指示该起始检测时隙在该公共信号块所在COT的下一个COT时,该起始检测时隙为该下一个COT中的首个可用于传输信号的时隙,和/或该起始 检测OFDM符号为该下一个COT中首个可用于传输信号的时隙的任意一个可用于传输信号的OFDM符号,其中,COT为网络设备抢占到的可用于传输信道的时间段。
在一种可能的实现方式中,该起始检测OFDM符号为该下一个COT中首个可用于传输信号的时隙的首个可用于传输信号的OFDM符号。
在一种可能的实现方式中,在载频小于或者等于第一载频频率的情况下,当该时隙偏移量大于或者等于2个时隙时,该起始检测OFDM符号为该起始检测时隙的任意一个可用于传输信号的OFDM符号;在载频小于或者等于第二载频频率且大于或者等于该第一载频频率的情况下,当该时隙偏移量大于或者等于4个时隙时,该起始检测OFDM符号为该起始检测时隙的任意一个可用于传输信号的OFDM符号。
发送模块920可以由收发器实现。处理模块930可以由处理器实现。发送模块920和处理模块930的具体功能和有益效果可以参见图6所示的方法,在此就不再赘述。
图10是本申请另一实施例提供的终端设备的示意性结构图。如图10所示,终端设备1000包括收发器1010、处理器1020、存储器1030。
图10中仅示出了一个存储器和处理器。在实际的终端设备产品中,可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置,也可以是与处理器集成在一起,本申请实施例对此不做限制。
收发器1010、处理器1020、存储器1030之间通过内部连接通路互相通信,传递控制和/或数据信号。
具体地,收发器1010,用于接收网络设备发送的公共信号块,该公共信号块包括指示信息,该指示信息用于指示时隙偏移量和/或下行控制信道的起始检测正交频分复用OFDM符号,该时隙偏移量为该公共信号块所在时隙与该下行控制信道的起始检测时隙之间的偏移量;根据该时隙偏移量和/或该起始检测OFDM符号,检测该下行控制信道。
网络设备1000的具体工作过程和有益效果可以参见图6所示实施例中的描述,在此不再赘述。
图11是本申请另一实施例提供的网络设备的示意性结构图。如图11所示,网络设备1100可以包括收发器1110、处理器1120、存储器1130。
图11中仅示出了一个存储器和处理器。在实际的控制设备产品中,可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置,也可以是与处理器集成在一起,本申请实施例对此不做限制。
收发器1110、处理器1120、存储器1130之间通过内部连接通路互相通信,传递控制和/或数据信号。
具体地,收发器1110,用于向终端设备发送公共信号块,该公共信号块包括指示信息,该指示信息用于指示时隙偏移量和/或下行控制信道的起始检测正交频分复用OFDM符号,该时隙偏移量为该公共信号块所在时隙与该下行控制信道的起始检测时隙之间的偏移量;根据该时隙偏移量和/或该起始检测OFDM符号,在该下行控制信道上发送下行控制信息。
网络设备1100的具体工作过程和有益效果可以参见图6所示实施例中的描述,在此不再赘述。
本申请各实施例该的收发器也可以称为收发单元、收发机、收发装置等。处理器也可 以称为处理单元,处理单板,处理模块、处理装置等。可选的,可以将收发器中用于实现接收功能的器件视为接收单元,将收发器中用于实现发送功能的器件视为发送单元,即收发器包括接收单元和发送单元。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
本申请各实施例所述的存储器用于存储处理器运行所需的计算机指令和参数。
本申请各实施例所述的处理器可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。本申请各实施例所述的处理器可以是通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、现成可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存取存储器(random access memory,RAM)、闪存、只读存储器(read-only memory,ROM)、可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的指令,结合其硬件完成上述方法的步骤。
在本申请的各种实施例中,各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其他任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line,DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包括一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如,软盘、硬盘、磁带)、光介质(例如数字视频光盘(digital video disc,DVD))、或者半导体介质(例如固态硬盘(solid state disk,SSD))等。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的***、装 置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的***、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个***,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(read-only memory,ROM)、随机存取存储器(random access memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。
Claims (40)
- 一种用于传输下行控制信道的方法,其特征在于,包括:终端设备接收网络设备发送的公共信号块,所述公共信号块包括指示信息,所述指示信息用于指示时隙偏移量和/或下行控制信道的起始检测正交频分复用OFDM符号,所述时隙偏移量为所述公共信号块所在时隙与所述下行控制信道的起始检测时隙之间的偏移量;所述终端设备根据所述时隙偏移量和/或所述起始检测OFDM符号,检测所述下行控制信道。
- 根据权利要求1所述的方法,其特征在于,所述终端设备根据所述时隙偏移量和/或所述起始检测OFDM符号,检测所述下行控制信道,包括:所述终端设备根据所述时隙偏移量和所述公共信号块所在时隙,确定所述下行控制信道的起始检测时隙;所述终端设备根据所述起始检测OFDM符号和所述起始检测时隙,确定所述下行控制信道的起始检测位置;所述终端设备根据所述起始检测位置,检测所述下行控制信道。
- 根据权利要求1或2所述的方法,其特征在于,针对所述公共信号块的第一映射图样,所述时隙偏移量为1个时隙、2个时隙、3个时隙或4个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量。
- 根据权利要求1或2所述的方法,其特征在于,针对所述公共信号块的第一映射图样,所述时隙偏移量为0,所述起始检测OFDM符号为所述公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号。
- 根据权利要求1或2所述的方法,其特征在于,针对所述公共信号块的第二映射图样,所述时隙偏移量为1个时隙或2个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为12的OFDM符号。
- 根据权利要求1或2所述的方法,其特征在于,针对所述公共信号块的第二映射图样,所述时隙偏移量为3个时隙或4个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量。
- 根据权利要求1或2所述的方法,其特征在于,针对所述公共信号块的第二映射图样,当所述公共信号块所在时隙的索引号为偶数时,所述时隙偏移量为0,所述起始检测OFDM符号为所述公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号。
- 根据权利要求1或2所述的方法,其特征在于,针对所述公共信号块的第二映射图样,当所述公共信号块所在时隙的索引号为奇数时,所述时隙偏移量为0,所述起始检测OFDM符号为所述公共信号块所占的最后一个OFDM符号之后的第1个或第3个OFDM符号。
- 根据权利要求1或2所述的方法,其特征在于,在所述时隙偏移量指示的所述起始检测时隙在所述公共信号块所在信道占用时间COT的下一个COT时,所述起始检测时隙为所述下一个COT中的首个可用于传输信号的时隙,和/或所述起始检测OFDM符号为所述下一个COT中首个可用于传输信号的时隙的任意一个可用于传输信号的OFDM符号。
- 一种用于传输下行控制信道的方法,其特征在于,包括:网络设备向终端设备发送公共信号块,所述公共信号块包括指示信息,所述指示信息用于指示时隙偏移量和/或下行控制信道的起始检测正交频分复用OFDM符号,所述时隙偏移量为所述公共信号块所在时隙与所述下行控制信道的起始检测时隙之间的偏移量;所述网络设备根据所述时隙偏移量和/或所述起始检测OFDM符号,在所述下行控制信道上发送下行控制信息。
- 根据权利要求10所述的方法,其特征在于,所述网络设备根据所述时隙偏移量和/或所述起始检测OFDM符号,在所述下行控制信道上发送下行控制信息,包括:所述网络设备根据所述时隙偏移量和所述公共信号块所在时隙,确定所述下行控制信道的起始检测时隙;所述网络设备根据所述起始检测OFDM符号和所述起始检测时隙,确定所述下行控制信道的起始检测位置;所述网络上设备根据所述起始检测位置,在所述下行控制信道上发送下行控制信息。
- 根据权利要求10或11所述的方法,其特征在于,针对所述公共信号块的第一映射图样,所述时隙偏移量为1个时隙、2个时隙、3个时隙或4个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量。
- 根据权利要求10或11所述的方法,其特征在于,针对所述公共信号块的第一映射图样,所述时隙偏移量为0,所述起始检测OFDM符号为所述公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号。
- 根据权利要求12或13所述的方法,其特征在于,针对所述公共信号块的第二映射图样,所述时隙偏移量为1个时隙或2个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为12的OFDM符号。
- 根据权利要求10或11所述的方法,其特征在于,针对所述公共信号块的第二映射图样,所述时隙偏移量为3个时隙或4个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量。
- 根据权利要求10或11所述的方法,其特征在于,针对所述公共信号块的第二映射图样,当所述公共信号块所在时隙的索引号为偶数时,所述时隙偏移量为0,所述起始检测OFDM符号为所述公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号。
- 根据权利要求10或11所述的方法,其特征在于,针对所述公共信号块的第二映射图样,当所述公共信号块所在时隙的索引号为奇数时,所述时隙偏移量为0,所述起始检测OFDM符号为所述公共信号块所占的最后一个OFDM符号之后的第1个或第3个 OFDM符号。
- 根据权利要求10或11所述的方法,其特征在于,在所述时隙偏移量指示所述起始检测时隙在所述公共信号块所在信道占用时间COT的下一个COT时,所述起始检测时隙为所述下一个COT中的首个可用于传输信号的时隙,和/或所述起始检测OFDM符号为所述下一个COT中首个可用于传输信号的时隙的任意一个可用于传输信号的OFDM符号。
- 一种终端设备,其特征在于,包括:接收模块,用于接收网络设备发送的公共信号块,所述公共信号块包括指示信息,所述指示信息用于指示时隙偏移量和/或下行控制信道的起始检测正交频分复用OFDM符号,所述时隙偏移量为所述公共信号块所在时隙与所述下行控制信道的起始检测时隙之间的偏移量;检测模块,用于根据所述时隙偏移量和/或所述起始检测OFDM符号,检测所述下行控制信道。
- 根据权利要求19所述的终端设备,其特征在于,所述终端设备还包括:处理模块,用于根据所述时隙偏移量和所述公共信号块所在时隙,确定所述下行控制信道的起始检测时隙;用于根据所述起始检测OFDM符号和所述起始检测时隙,确定所述下行控制信道的起始检测位置;所述检测模块,具体用于根据所述起始检测位置,检测所述下行控制信道。
- 根据权利要求19或20所述的终端设备,其特征在于,针对所述公共信号块的第一映射图样,所述时隙偏移量为1个时隙、2个时隙、3个时隙或4个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量。
- 根据权利要求19或20所述的终端设备,其特征在于,针对所述公共信号块的第一映射图样,所述时隙偏移量为0,所述起始检测OFDM符号为所述公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号。
- 根据权利要求19或20所述的终端设备,其特征在于,针对所述公共信号块的第二映射图样,所述时隙偏移量为1个时隙或2个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为12的OFDM符号。
- 根据权利要求19或20所述的终端设备,其特征在于,针对所述公共信号块的第二映射图样,所述时隙偏移量为3个时隙或4个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量。
- 根据权利要求19或20所述的终端设备,其特征在于,针对所述公共信号块的第二映射图样,当所述公共信号块所在时隙的索引号为偶数时,所述时隙偏移量为0,所述起始检测OFDM符号为所述公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号。
- 根据权利要求19或20所述的终端设备,其特征在于,针对所述公共信号块的第二映射图样,当所述公共信号块所在时隙的索引号为奇数时,所述时隙偏移量为0,所述起始检测OFDM符号为所述公共信号块所占的最后一个OFDM符号之后的第1个或第3 个OFDM符号。
- 根据权利要求19或20所述的终端设备,其特征在于,在所述时隙偏移量指示的所述起始检测时隙在所述公共信号块所在信道占用时间COT的下一个COT时,所述起始检测时隙为所述下一个COT中的首个可用于传输信号的时隙,和/或所述起始检测OFDM符号为所述下一个COT中首个可用于传输信号的时隙的任意一个可用于传输信号的OFDM符号。
- 一种网络设备,其特征在于,包括:发送模块,用于向终端设备发送公共信号块,所述公共信号块包括指示信息,所述指示信息用于指示时隙偏移量和/或下行控制信道的起始检测正交频分复用OFDM符号,所述时隙偏移量为所述公共信号块所在时隙与所述下行控制信道的起始检测时隙之间的偏移量;所述发送模块,还用于所述网络设备根据所述时隙偏移量和/或所述起始检测OFDM符号,在所述下行控制信道上发送下行控制信息。
- 根据权利要求28所述的网络设备,其特征在于,所述网络设备根据所述时隙偏移量和/或所述起始检测OFDM符号,在所述下行控制信道上发送下行控制信息,包括:所述网络设备根据所述时隙偏移量和所述公共信号块所在时隙,确定所述下行控制信道的起始检测时隙;所述网络设备根据所述起始检测OFDM符号和所述起始检测时隙,确定所述下行控制信道的起始检测位置;所述网络上设备根据所述起始检测位置,在所述下行控制信道上发送下行控制信息。
- 根据权利要求28或29所述的网络设备,其特征在于,针对所述公共信号块的第一映射图样,所述时隙偏移量为1个时隙、2个时隙、3个时隙或4个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量。
- 根据权利要求28或29所述的网络设备,其特征在于,针对所述公共信号块的第一映射图样,所述时隙偏移量为0,所述起始检测OFDM符号为所述公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号。
- 根据权利要求28或29所述的网络设备,其特征在于,针对所述公共信号块的第二映射图样,所述时隙偏移量为1个时隙或2个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为12的OFDM符号。
- 根据权利要求28或29所述的网络设备,其特征在于,针对所述公共信号块的第二映射图样,所述时隙偏移量为3个时隙或4个时隙,所述起始检测OFDM符号为所述起始检测时隙的索引号为0的OFDM符号或索引号为(K/2)向下取整的OFDM符号,K为一个时隙包括的OFDM符号的数量。
- 根据权利要求28或29所述的网络设备,其特征在于,针对所述公共信号块的第二映射图样,当所述公共信号块所在时隙的索引号为偶数时,所述时隙偏移量为0,所述起始检测OFDM符号为所述公共信号块所占的最后一个OFDM符号之后的第1个或第2个OFDM符号。
- 根据权利要求28或29所述的网络设备,其特征在于,针对所述公共信号块的第 二映射图样,当所述公共信号块所在时隙的索引号为奇数时,所述时隙偏移量为0,所述起始检测OFDM符号为所述公共信号块所占的最后一个OFDM符号之后的第1个或第3个OFDM符号。
- 根据权利要求28或29所述的网络设备,其特征在于,在所述时隙偏移量指示所述起始检测时隙在所述公共信号块所在信道占用时间COT的下一个COT时,所述起始检测时隙为所述下一个COT中的首个可用于传输信号的时隙,和/或所述起始检测OFDM符号为所述下一个COT中首个可用于传输信号的时隙的任意一个可用于传输信号的OFDM符号。
- 一种终端设备,其特征在于,包括收发器、处理器和存储器,用于执行如权利要求1至9中任一项所述的方法。
- 一种网络设备,其特征在于,包括收发器、处理器和存储器,用于执行如权利要求10至18中任一项所述的方法。
- 一种计算机可读存储介质,其特征在于,包括指令,当所述指令在终端设备上运行时,使得终端设备执行如权利要求1至9中任一项所述的方法。
- 一种计算机可读存储介质,其特征在于,包括指令,当所述指令在网络设备上运行时,使得网络设备执行如权利要求10至18中任一项所述的方法。
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