WO2021155763A1 - 非授权频段的数据传输方法及装置、通信设备 - Google Patents
非授权频段的数据传输方法及装置、通信设备 Download PDFInfo
- Publication number
- WO2021155763A1 WO2021155763A1 PCT/CN2021/074343 CN2021074343W WO2021155763A1 WO 2021155763 A1 WO2021155763 A1 WO 2021155763A1 CN 2021074343 W CN2021074343 W CN 2021074343W WO 2021155763 A1 WO2021155763 A1 WO 2021155763A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ffp
- terminal
- channel
- transmission
- side device
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0808—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
Definitions
- the present invention relates to the field of communication technology, in particular to a data transmission method and device of an unlicensed frequency band, and communication equipment.
- unlicensed bands can be used as a supplement to licensed bands to help operators expand their services.
- Unlicensed frequency bands must comply with regulations when used to ensure that all devices can use the resource fairly, such as listen before talk (LBT), maximum channel occupation time (Maximum Channel Occupancy Time, MCOT) and other rules .
- LBT listen before talk
- MCOT Maximum Channel Occupancy Time
- ED energy detection
- Frame-Based Equipment means that the transmission and/or reception timing of the equipment adopts a periodic structure, and the cycle is a fixed frame period (Fixed Frame Period, FFP).
- the FBE node uses the LBT-based channel access mechanism to occupy the channel.
- any uplink transmission needs to perform downlink signal detection first. Whether it is uplink transmission based on dynamic grant or uplink transmission without authorization (configured grant), the UE can only detect Transmission is possible after the downlink signal. For unlicensed transmission, if the gNB side cannot occupy the channel, the UE cannot perform unlicensed transmission even if the channel on the UE side is empty, which reduces the efficiency of unlicensed transmission.
- gNB does not know when there will be UE access or when there will be data to be transmitted. In order to ensure UE access or transmission as much as possible, gNB needs to perform frequent interception and preemption. Channel, and send downlink signals and/or channels, bringing unnecessary redundant signal transmission.
- the embodiment of the present invention provides a data transmission method and device in an unlicensed frequency band, and communication equipment, which can realize that the gNB and the UE flexibly share the transmission channel under the FBE access mechanism of the unlicensed frequency band.
- an embodiment of the present invention provides a data transmission method in an unlicensed frequency band, which is applied to a terminal, and includes:
- Uplink transmission is performed according to the fixed frame period FFP configuration information and the channel state.
- the FFP configuration information includes at least one of the FFP start position and FFP length of the terminal, and at least one of the FFP start position and FFP length of the network side device.
- One item, the FFP start position of the terminal is different from the FFP start position of the network side device.
- an embodiment of the present invention also provides a data transmission method in an unlicensed frequency band, which is applied to a network side device, and includes:
- the downlink transmission is performed according to the fixed frame period FFP configuration information and the channel state.
- the FFP configuration information includes at least one of the FFP start position and the FFP length of the network side device, and at least one of the FFP start position and the FFP length of the terminal.
- One item, the FFP start position of the network side device is different from the FFP start position of the terminal.
- an embodiment of the present invention also provides a data transmission device in an unlicensed frequency band, which is applied to a terminal, and includes:
- the first transmission module is configured to perform uplink transmission according to fixed frame period FFP configuration information and channel status, where the FFP configuration information includes at least one of the FFP start position and FFP length of the terminal, and the FFP start of the network side device At least one of the position and the FFP length, the FFP start position of the terminal is different from the FFP start position of the network side device.
- an embodiment of the present invention also provides a data transmission device in an unlicensed frequency band, which is applied to a network side device, and includes:
- the second transmission module is configured to perform downlink transmission according to fixed frame period FFP configuration information and channel status, where the FFP configuration information includes at least one of the FFP start position and FFP length of the network side device, and the FFP start of the terminal At least one of the position and the FFP length, and the FFP start position of the network side device is different from the FFP start position of the terminal.
- an embodiment of the present invention also provides a communication device.
- the communication device includes a processor, a memory, and a computer program stored on the memory and running on the processor, and the processor executes all The computer program implements the steps of the data transmission method in the unlicensed frequency band as described above.
- an embodiment of the present invention provides a computer-readable storage medium with a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned unlicensed frequency band data is realized The steps of the transmission method.
- the terminal performs uplink transmission according to FFP configuration information and channel status
- the network side device performs downlink transmission according to FFP configuration information and channel status.
- the FFP start position of the network side device is different from the FFP start position of the terminal, so that the network side
- the device and the terminal can share the COT of the other party for transmission or initiate COT for transmission by themselves, so that the network side device and the terminal can flexibly share the transmission channel.
- Fig. 1 shows a block diagram of a mobile communication system to which an embodiment of the present invention can be applied
- Figure 2 shows a schematic diagram of the operation of the initiating node
- FIG. 3 shows a schematic flowchart of a data transmission method in an unlicensed frequency band of a terminal according to an embodiment of the present invention
- FIG. 4 shows a schematic flowchart of a data transmission method in an unlicensed frequency band of a network side device according to an embodiment of the present invention
- FIG. 5 shows a schematic diagram of the UE FFP starting position is later than the gNB FFP starting position in the first embodiment of the present invention
- FIG. 6 shows a schematic diagram of a UE FFP starting position later than a gNB FFP starting position in the second embodiment of the present invention
- FIG. 7 shows a schematic diagram of the UE FFP starting position is later than the gNB FFP starting position in the third embodiment of the present invention
- FIG. 8 shows a schematic diagram of the UE FFP starting position is later than the gNB FFP starting position in the fourth embodiment of the present invention, and the COT of the UE and the gNB do not overlap;
- FIG. 9 is a schematic diagram showing that the start position of the gNB FFP is later than the start position of the UE FFP in the fifth embodiment of the present invention.
- FIG. 10 shows a schematic diagram of a module structure of a terminal according to an embodiment of the present invention.
- FIG. 11 shows a schematic diagram of a module structure of a network side device according to an embodiment of the present invention.
- FIG. 12 shows a schematic diagram of the composition of a terminal according to an embodiment of the present invention.
- FIG. 13 shows a schematic diagram of the composition of a network side device according to an embodiment of the present invention.
- LTE Long Term Evolution
- LTE-A Long Term Evolution-Advanced
- CDMA Code Division Multiple Access
- TDMA Time Division Multiple Access
- FDMA Frequency Division Multiple Access
- OFDMA Orthogonal Frequency Division Multiple Access
- SC-FDMA Single Carrier Frequency Single-carrier Frequency-Division Multiple Access
- the terms "system” and “network” are often used interchangeably.
- the CDMA system can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA).
- UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants.
- the TDMA system can implement radio technologies such as the Global System for Mobile Communication (GSM).
- OFDMA system can realize such as Ultra Mobile Broadband (UMB), Evolved UTRA (Evolution-UTRA, E-UTRA), IEEE 802.11 (Wireless Fidelity, Wi-Fi), IEEE 802.16 (Global Microwave) Access interoperability (Worldwide Interoperability for Microwave Access, WiMAX), IEEE 802.20, Flash-OFDM and other radio technologies.
- UMB Ultra Mobile Broadband
- Evolved UTRA Evolved UTRA
- E-UTRA Evolved UTRA
- IEEE 802.11 Wireless Fidelity, Wi-Fi
- IEEE 802.16 Global Microwave) Access interoperability (Worldwide Interoperability for Microwave Access, WiMAX)
- IEEE 802.20 Flash-OFDM and other radio technologies.
- UMB Ultra Mobile Broadband
- Evolved UTRA Evolved UTRA
- IEEE 802.11 Wireless Fidelity, Wi-Fi
- UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project” (3GPP).
- CDMA2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2" (3GPP2).
- the techniques described in this article can be used for the systems and radio technologies mentioned above, as well as other systems and radio technologies.
- NR New Radio
- NR terminology is used in most of the following description, although these technologies can also be applied to applications other than NR system applications.
- FIG. 1 shows a block diagram of a wireless communication system to which an embodiment of the present invention can be applied.
- the wireless communication system includes a terminal 11 and a network side device 12.
- the terminal 11 may also be referred to as a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a personal digital assistant (Personal Digital Assistant).
- PDA mobile Internet device
- MID mobile Internet Device
- Wearable Device wearable device
- vehicle-mounted equipment it should be noted that the specific type of terminal 11 is not limited in the embodiment of the present invention .
- the network-side device 12 may be a base station or a core network, wherein the base station may be the fifth generation (5 th Generation, 5G) and later a base station (e.g.: gNB, 5G NR NB, etc.), or other communication system, a base station (E.g. eNB, Wireless Local Area Network (WLAN) access point, or other access points, etc.), or a location server (e.g.
- 5G fifth generation
- a base station e.g.: gNB, 5G NR NB, etc.
- a base station e.g. eNB, Wireless Local Area Network (WLAN) access point, or other access points, etc.
- a location server e.g.
- Evolved Serving Mobile Location Center (E-SMLC) ) Or Location Manager Function (LMF)
- the base station can be called Node B, Evolved Node B, Access Point, Base Transceiver Station (Base Transceiver Station, BTS), Radio Base Station, Radio Transceiver , Basic Service Set (BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present invention, only the base station in the NR system is taken as an example. However, the specific type of base station is not limited.
- the base station may communicate with the terminal 11 under the control of the base station controller.
- the base station controller may be a part of a core network or some base stations. Some base stations can communicate control information or user data with the core network through the backhaul. In some examples, some of these base stations may directly or indirectly communicate with each other through a backhaul link, which may be a wired or wireless communication link.
- the wireless communication system can support operations on multiple carriers (waveform signals of different frequencies). Multi-carrier transmitters can simultaneously transmit modulated signals on these multiple carriers. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal can be sent on a different carrier and can carry control information (for example, reference signals, control channels, etc.), overhead information, data, and so on.
- the base station may perform wireless communication with the terminal 11 via one or more access point antennas. Each base station can provide communication coverage for its corresponding coverage area. The coverage area of an access point can be divided into sectors that constitute only a part of the coverage area.
- the wireless communication system may include different types of base stations (for example, a macro base station, a micro base station, or a pico base station).
- the base station can also utilize different radio technologies, such as cellular or WLAN radio access technologies.
- the base stations can be associated with the same or different access networks or operator deployments.
- the coverage areas of different base stations may overlap.
- the communication link in the wireless communication system may include an uplink for carrying uplink (UL) transmission (for example, from the terminal 11 to the network side device 12), or for carrying a downlink (Downlink, DL) transmission.
- the downlink of transmission (for example, from the network side device 12 to the terminal 11) is used to carry the sidelink (Sidelink, SL) for transmission between the terminal 11 and other terminals 11.
- UL transmission may also be referred to as reverse link transmission
- DL transmission may also be referred to as forward link transmission.
- Downlink transmission can use licensed frequency bands, unlicensed frequency bands, or both.
- uplink transmission can be performed using licensed frequency bands, unlicensed frequency bands, or both.
- unlicensed bands can be used as a supplement to licensed bands to help operators expand their services.
- unlicensed frequency bands can work in 5GHz, 37GHz and 60GHz frequency bands.
- the large bandwidth (80 or 100MHz) of the unlicensed frequency band can reduce the implementation complexity of base stations and terminals (User Equipment, UE).
- the unlicensed frequency band is shared by multiple radio access technologies (RATs), such as WiFi, radar, Long Term Evolution (LTE)-License Assisted Access (LAA), etc.
- RATs radio access technologies
- LBT listen before talk
- LAA Long Term Evolution
- MCOT maximum channel occupation time
- ED energy detection
- the transmission node may be a base station, UE, WiFi access point (Access Point, AP), and so on. After the transmission node starts transmission, the occupied channel time (Channel Occupancy Time, COT) cannot exceed MCOT.
- Frame-Based Equipment means that the transmission and/or reception timing of the equipment adopts a periodic structure, and the cycle is a fixed frame period (Fixed Frame Period, FFP).
- the FBE node uses the LBT-based channel access mechanism to occupy the channel. Among them, the node that initiates a transmission sequence that includes one or more consecutive transmissions is called the initiating node (Initiating Device), and other nodes are called the responding device (Responding Device).
- the FBE node can be an initiating node, a responding node, or supporting two node functions at the same time.
- the value set of Fixed Frame Period supported by the node is set by the device manufacturer, and the values are all in the range of 1 to 10 ms.
- the transmission can only be started at the beginning of a Fixed Frame Period.
- the node can change the Fixed Frame Period of its current application, but its frequency cannot be higher than 200ms once.
- the initiating node Before transmission is started at the beginning of a Fixed Frame Period, the initiating node will perform channel idle estimation (Clear Channel Assess, CCA). If it is judged to be idle, it can be sent immediately, otherwise it will not be sent during the next Fixed Frame Period. Sending is allowed (except for short control signaling transmissions (Short Control Signaling Transmissions) specified by regulatory requirements). In other words, the initiating node needs to do one-shot LBT before transmission, that is, Cat. 2 LBT.
- CCA Channel Assessment
- the total time that the initiating node can transmit without re-estimating the availability of the channel is defined as Channel Occupancy Time (COT).
- COT Channel Occupancy Time
- the initiating node can transmit multiple times on the designated channel within the COT without performing additional CCA, as long as the time interval between adjacent transmissions of these transmissions does not exceed 16 ⁇ s. If the time interval between adjacent transmissions in the COT exceeds 16 ⁇ s, the initiating node needs to perform additional CCA before continuing to transmit, and continue to transmit only when the CCA determines that the channel is idle. All time intervals between adjacent transmissions are included in the COT duration.
- the initiating node can authorize the use of the designated channel in certain periods of time in the COT to one or more associated responding nodes for transmission.
- COT cannot be longer than 95% of Fixed Frame Period, and there is an idle period (Idle Period) immediately after COT.
- the idle period lasts until the beginning of the next Fixed Frame Period and ends, so that the length of the idle period is at least Fixed Frame Period. 5%, and the minimum value is 100 ⁇ s.
- a certain node After a certain node correctly receives the data packet for it, it can immediately transmit the management and control frame (such as Acknowledgement (ACK) frame) corresponding to the data packet on the designated channel without CCA.
- This node needs to ensure that these continuously transmitted frames cannot exceed the maximum COT duration mentioned above.
- the responding node After the responding node receives an initiating node's authorization to use the specified channel for a certain period of time, it will perform the following operations:
- the responding node initiates a transmission after the end of the last authorized transmission indicated by the initiating node, it does not need to perform CCA before transmission; otherwise, it performs CCA before the authorized transmission period starts, and if it determines that the channel is busy, it will give up
- This authorization otherwise, can start transmission on the designated channel, up to the remaining part of the COT in the current Fixed Frame Period, and can start multiple transmissions within the time range of the remaining part, as long as the time interval between adjacent transmissions does not exceed 16 ⁇ s. Yes, give up this authorization after the transfer is complete.
- the downlink signal or channel may be any downlink signal such as a synchronization signal block (Synchronization Signal Block, SSB), a physical downlink control channel (PDCCH), and a demodulation reference signal (Demodulation Reference Signal, DMRS).
- SSB Synchronization Signal Block
- PDCCH physical downlink control channel
- DMRS demodulation Reference Signal
- any uplink transmission needs to perform downlink signal detection first. Whether it is scheduled uplink transmission or unauthorized uplink transmission, the UE can only perform transmission after detecting the downlink signal. For unlicensed transmission, if the gNB side cannot occupy the channel, the UE cannot perform unlicensed transmission even if the channel on the UE side is empty, which reduces the efficiency of unlicensed transmission.
- gNB does not know when there will be UE access or when there will be data to be transmitted. In order to ensure UE access or transmission as much as possible, gNB needs to perform frequent interception and preemption. Channel, and send downlink signals and/or channels, bringing unnecessary redundant signal transmission.
- the embodiment of the present invention provides a data transmission method in an unlicensed frequency band, which is applied to a terminal, as shown in FIG. 3, including:
- Step 101 Perform uplink transmission according to the fixed frame period FFP configuration information and the channel state.
- the FFP configuration information includes at least one of the FFP start position and FFP length of the terminal, and the FFP start position and FFP length of the network side device In at least one of the following, the FFP start position of the terminal is different from the FFP start position of the network side device.
- the terminal performs uplink transmission according to the FFP configuration information and channel status.
- the FFP start position of the network side device is different from the FFP start position of the terminal, so that the terminal can share the COT of the network side device for transmission or initiate COT by itself. Transmission, so as to realize that the network side equipment and the terminal flexibly share the transmission channel.
- the FFP configuration information is sent by the network side device.
- FFP configuration information can be carried by radio resource control (Radio Resource Control, RRC) messages or physical layer signaling
- the FFP starting position can be an absolute time domain position or an offset value relative to the reference position.
- the offset value can be an integer.
- the reference position can be predefined, pre-configured by the network side device, or configured by the network side device. .
- the length of the FFP of the terminal is different from the length of the FFP of the network side device; or the length of the FFP of the terminal is the same as the length of the FFP of the network side device.
- the FFP start position of the terminal is later than the FFP start position of the network side device, and the uplink transmission according to FFP configuration information and channel status includes:
- channel idle estimation CCA to obtain the channel state
- downlink signal detection to obtain the detection result
- downlink channel detection to obtain the detection result
- the uplink transmission resources in the first X symbols of the FFP of the terminal are invalid, X is an integer greater than or equal to 1.
- the judging whether to perform uplink transmission according to the channel state includes any one of the following:
- the terminal detects a downlink signal or a downlink channel, and detects that the channel is empty, perform uplink transmission;
- the terminal detects a downlink signal or a downlink channel, and detects that the channel is busy, it does not perform uplink transmission;
- the terminal does not detect a downlink signal or a downlink channel, and detects that the channel is empty, perform uplink transmission;
- the terminal does not detect a downlink signal or a downlink channel, and detects that the channel is busy, no uplink transmission is performed.
- the terminal does not detect the downlink signal or the downlink channel includes any of the following situations: the terminal performs downlink signal detection and/or downlink channel detection, but does not detect the downlink signal or downlink channel; the terminal does not perform downlink signal detection and downlink channel detection .
- the performing uplink transmission includes any one of the following:
- the terminal shares the channel occupation time COT of the network side device for uplink transmission, and the transmission time does not exceed the COT of the network side device;
- the terminal itself initiates COT for uplink transmission.
- the COT of the network-side device and the COT of the terminal may or may not overlap.
- the uplink transmission is physical random access channel PRACH transmission
- the performing uplink transmission includes any one of the following:
- the terminal detects a downlink signal or a downlink channel, and detects that the channel is empty, the terminal selects any one of the random access channel RACH occasions in its own FFP for PRACH transmission, and the transmission duration does not exceed the network COT of side equipment;
- the terminal If the terminal does not detect a downlink signal or a downlink channel, and detects that the channel is empty, the terminal performs PRACH transmission on the first RACH occasion among the RACH occasions in its own FFP.
- initiating COT by the terminal itself for uplink transmission includes any one of the following:
- the method before the terminal shares the COT of the network side device for uplink transmission, the method further includes:
- the FFP start position of the terminal is earlier than the FFP start position of the network side device, and the method further includes:
- the embodiment of the present invention provides a data transmission method in an unlicensed frequency band, which is applied to a network side device, as shown in FIG. 4, including:
- Step 201 Perform downlink transmission according to the fixed frame period FFP configuration information and the channel state, the FFP configuration information includes at least one of the FFP start position and FFP length of the network side device, and the FFP start position and FFP length of the terminal In at least one of the following, the FFP start position of the network side device is different from the FFP start position of the terminal.
- the network side device performs downlink transmission according to the FFP configuration information and channel status, and the FFP start position of the network side device is different from the FFP start position of the terminal, so the network side device can share the COT of the terminal for transmission or initiate transmission by itself COT performs transmission, so that network-side equipment and terminals can flexibly share transmission channels.
- the FFP configuration information is sent by the network side device.
- the method also includes:
- FFP configuration information can be carried by radio resource control (Radio Resource Control, RRC) messages or physical layer signaling
- the FFP starting position can be an absolute time domain position or an offset value relative to the reference position.
- the offset value can be an integer.
- the reference position can be predefined, pre-configured by the network side device, or configured by the network side device. .
- the length of the FFP of the terminal is different from the length of the FFP of the network side device;
- the length of the FFP of the terminal is the same as the length of the FFP of the network side device.
- the FFP start position of the network side device is later than the FFP start position of the terminal, and the performing downlink transmission according to FFP configuration information and channel status includes:
- channel idle estimation CCA to obtain the channel state
- uplink signal detection to obtain the detection result
- uplink channel detection to obtain the detection result
- the judging whether to perform downlink transmission according to the channel state includes any one of the following:
- the network side device detects an uplink signal or an uplink channel, and detects that the channel is empty, perform downlink transmission;
- the network side device detects an uplink signal or an uplink channel, and detects that the channel is busy, no downlink transmission is performed;
- the network side device does not detect an uplink signal or an uplink channel, and detects that the channel is empty, then perform downlink transmission;
- the network side device does not detect an uplink signal or an uplink channel, and detects that the channel is busy, then no downlink transmission is performed.
- the network side device does not detect the uplink signal or the uplink channel includes any of the following situations: the network side device performs the uplink signal detection and/or the uplink channel detection, but does not detect the uplink signal or the uplink channel; the network side device does not perform the uplink Signal detection and uplink channel detection.
- the performing downlink transmission includes any one of the following:
- the network side device shares the COT of the terminal for downlink transmission, and the transmission time does not exceed the COT of the terminal;
- the network side device itself initiates COT for downlink transmission.
- the method before the network side device shares the COT of the terminal for downlink transmission, the method further includes:
- the FFP start position of the terminal is later than the FFP start position of the network side device, and the method further includes:
- the method further includes:
- the FFP start position of the UE is after the FFP of the gNB, and the FFP start positions of the UE and the gNB differ by at least one orthogonal frequency division multiplexing symbol (Orthogonal Frequency Division Multiplexing symbol, OS) , And the two COT time overlap.
- the UE performs at least one of CCA and downlink signal detection within the idle period of its FFP.
- the UE detects a downlink signal, it can perform uplink transmission in the COT of the gNB according to the instruction of the gNB or the default rule. If the UE does not detect a downlink signal within its idle period, and does CCA and detects that the channel is empty, the UE itself initiates FFP for uplink transmission.
- the FFP start position of the UE is much later than the FFP of the gNB.
- the detection of the gNB downlink signal (DL signal) is much earlier than the CCA.
- the UE performs DL signal detection from the FFP start position of the gNB.
- the UE can perform uplink transmission in the remaining COT of the gNB. If the UE does not detect the DL signal at the start position of the FFP of the gNB, the UE stops detecting and does CCA until its own FFP. If the channel is empty, the corresponding uplink transmission is performed.
- the UE can also perform DL signal detection until the CCA is performed in the idle period when the DL signal is not detected. If the UE detects any DL signal, the UE can share the COT of the gNB. If the UE has not detected the DL signal, it will do LBT at the CCA location and decide whether to do uplink transmission according to the listening result.
- the FFP of the UE starts later than the FFP of the gNB, and the FFP of the UE is much smaller than the FFP of the gNB, that is, there is more than one start position of the FFP of the UE in the COT of the gNB. .
- the UE detects the DL signal of the gNB, the UE can share the COT of the gNB, as shown in FFP1 and FFP2 in the figure.
- the UE can also choose to initiate COT, as shown in FFP4 in the figure.
- the transmission duration of the UE can be longer than the remaining COT of the gNB.
- the behavior of the UE may be indicated by the gNB, and the gNB may indicate whether the UE needs to intiate COT by itself in FFP4 when sending the DL signal.
- the UE if the UE performs random access, after the UE detects the downlink signal during the idle period, it can configure the random access channel occasion (Random Access Channel occasion, RO) in the FFP One is randomly selected for physical random access channel (Physical Random Access Channel, PRACH) transmission, and the transmission time does not exceed the remaining COT of the gNB. If the UE does not detect a downlink signal during the idle period, and the CCA detection shows that the channel is empty, the UE configures the first RO in the RACH occasion in the FFP to perform PRACH transmission, as shown in Figure 5.
- RO Random Access Channel occasion
- PRACH Physical Random Access Channel
- the UE can perform CG transmission in the COT of the gNB. If the UE does not detect a downlink signal during the idle period, and the CCA detection shows that the channel is empty, the UE starts CG transmission from its own FFP starting position.
- SR scheduling request
- CG Common Group
- PUSCH Physical Uplink Shared Channel
- the start position of the FFP of the UE is later than the FFP of the gNB, and the COT of the UE does not overlap with the FFP of the gNB, then the gNB and the UE can each perform CCA, and according to the channel sensing result, Transmit within your own COT.
- the start position of the FFP of the gNB may be later than the start position of the FFP of the UE.
- the gNB needs to do at least one of uplink signal (UL signal) detection and CCA. If the gNB detects the UL signal, it determines whether the COT of the UE can be shared or how long the COT can be shared according to the uplink signal, for example, the CG-Uplink Control Information (UCI) indication. If the gNB does not detect the UL signal and the CCA detection channel is empty, the gNB initiates COT by itself and performs downlink transmission.
- UL signal uplink signal
- CCA CG-Uplink Control Information
- the gNB performs UL signal detection from the FFP start position of the UE.
- the gNB can perform uplink transmission within the UE's remaining COT. If the gNB does not detect the UL signal at the start position of the FFP of the UE, the gNB stops detecting and does CCA until its own FFP. If the channel is empty, the corresponding downlink transmission is performed.
- the gNB can also perform UL signal detection until the time of CCA in the idle period when the UL signal is not detected.
- the gNB can share the COT of the UE. If the gNB has not detected the UL signal, it will do LBT at the CCA location, and decide whether to do downlink transmission according to the listening result.
- the FFP of the gNB starts later than the FFP of the UE, and the FFP of the gNB is much smaller than the FFP of the UE, that is, there is more than one start position of the FFP of the gNB in the COT of the UE.
- the gNB detects the UL signal of the UE, the gNB can share the COT of the UE.
- the gNB can choose to initiate COT by itself. At this time, the transmission time of the gNB can be longer than the remaining COT of the UE.
- the gNB may notify the UE of FFP related information through RRC messages or physical layer signaling.
- the above-mentioned starting position can be an absolute time domain position or an offset value relative to a certain reference position.
- gNB and UE have a common reference position, and their FFP start position is the offset value relative to this reference position.
- the FFP start position of the gNB is an absolute position
- the FFP start position of the UE can be the offset value relative to the FFP start position of the gNB;
- the FFP start position of the gNB can be It is the offset value relative to the FFP start position of the UE.
- the offset value can be 0 or any positive or negative integer.
- the terminal 300 of the embodiment of the present invention includes an unlicensed frequency band data transmission device, which can implement the unlicensed frequency band data transmission method applied to the terminal in the above embodiment and achieve the same effect.
- the terminal 300 Specifically includes the following functional modules:
- the first transmission module 310 is configured to perform uplink transmission according to fixed frame period FFP configuration information and channel status.
- the FFP configuration information includes at least one of the FFP start position and FFP length of the terminal, and the FFP start of the network side device. At least one of the start position and the FFP length, and the FFP start position of the terminal is different from the FFP start position of the network side device.
- the terminal performs uplink transmission according to the FFP configuration information and channel status.
- the FFP start position of the network side device is different from the FFP start position of the terminal, so that the terminal can share the COT of the network side device for transmission or initiate COT by itself. Transmission, so as to realize that the network side equipment and the terminal flexibly share the transmission channel.
- the FFP configuration information is sent by the network side device.
- FFP configuration information can be carried by RRC message or physical layer signaling
- the FFP starting position can be an absolute time domain position or an offset value relative to the reference position.
- the offset value can be an integer.
- the reference position can be predefined, pre-configured by the network side device, or configured by the network side device. .
- the length of the FFP of the terminal is different from the length of the FFP of the network side device; or the length of the FFP of the terminal is the same as the length of the FFP of the network side device.
- the FFP start position of the terminal is later than the FFP start position of the network side device, and the first transmission module 310 is specifically configured to select the FFP idle position indicated by the FFP configuration information.
- the uplink transmission resources in the first X symbols of the FFP of the terminal are invalid, X is an integer greater than or equal to 1.
- the first transmission module 310 is specifically configured to perform any one of the following:
- the terminal detects a downlink signal or a downlink channel, and detects that the channel is empty, perform uplink transmission;
- the terminal detects a downlink signal or a downlink channel, and detects that the channel is busy, it does not perform uplink transmission;
- the terminal does not detect a downlink signal or a downlink channel, and detects that the channel is empty, perform uplink transmission;
- the terminal does not detect a downlink signal or a downlink channel, and detects that the channel is busy, no uplink transmission is performed.
- the terminal does not detect the downlink signal or the downlink channel includes any of the following situations: the terminal performs downlink signal detection and/or downlink channel detection, but does not detect the downlink signal or downlink channel; the terminal does not perform downlink signal detection and downlink channel detection .
- the first transmission module 310 is specifically configured to perform any one of the following:
- the terminal shares the channel occupation time COT of the network side device for uplink transmission, and the transmission time does not exceed the COT of the network side device;
- the terminal itself initiates COT for uplink transmission.
- the COT of the network-side device and the COT of the terminal may or may not overlap.
- the uplink transmission is physical random access channel PRACH transmission
- the first transmission module 310 is specifically configured to perform any one of the following:
- the terminal detects a downlink signal or a downlink channel, and detects that the channel is empty, the terminal selects any one of the random access channel RACH occasions in its own FFP for PRACH transmission, and the transmission duration does not exceed the network COT of side equipment;
- the terminal If the terminal does not detect a downlink signal or a downlink channel, and detects that the channel is empty, the terminal performs PRACH transmission on the first RACH occasion among the RACH occasions in its own FFP.
- the first transmission module 310 is specifically configured to perform any one of the following:
- the first transmission module 310 is further configured to receive second indication information of the network-side device, and the second indication information indicates that the terminal is allowed to share the COT of the network-side device. .
- the FFP start position of the terminal is earlier than the FFP start position of the network side device
- the first transmission module 310 is further configured to send a third instruction to the network side device Information, the third indication information indicates that the network side device is allowed to share the COT of the terminal.
- the network side device 301 of the embodiment of the present invention includes an unlicensed frequency band data transmission device, which can implement the unlicensed frequency band data transmission method applied to the network side device in the above embodiment, and achieve the same effect .
- the network side device 301 specifically includes the following functional modules:
- the second transmission module 330 is configured to perform downlink transmission according to the fixed frame period FFP configuration information and the channel state.
- the FFP configuration information includes at least one of the FFP start position and the FFP length of the network side device, and the FFP start of the terminal At least one of the start position and the FFP length, and the FFP start position of the network side device is different from the FFP start position of the terminal.
- the network side device performs downlink transmission according to the FFP configuration information and channel status, and the FFP start position of the network side device is different from the FFP start position of the terminal, so the network side device can share the COT of the terminal for transmission or initiate transmission by itself COT performs transmission, so that network-side equipment and terminals can flexibly share transmission channels.
- the FFP configuration information is sent by the network side device.
- the second transmission module 330 is further configured to send FFP configuration information to the terminal.
- FFP configuration information can be carried by radio resource control (Radio Resource Control, RRC) messages or physical layer signaling
- the FFP starting position can be an absolute time domain position or an offset value relative to the reference position.
- the offset value can be an integer.
- the reference position can be predefined, pre-configured by the network side device, or configured by the network side device. .
- the length of the FFP of the terminal is different from the length of the FFP of the network side device;
- the length of the FFP of the terminal is the same as the length of the FFP of the network side device.
- the FFP start position of the network side device is later than the FFP start position of the terminal, and the second transmission module 330 is specifically configured to execute during the FFP idle period indicated by the FFP configuration information At least one of the following operations: channel idle estimation CCA to obtain the channel state, uplink signal detection to obtain the detection result, and uplink channel detection to obtain the detection result; judging whether to perform downlink transmission according to at least one of the channel state and the detection result.
- the second transmission module 330 is specifically configured to perform any one of the following:
- the network side device detects an uplink signal or an uplink channel, and detects that the channel is empty, perform downlink transmission;
- the network side device detects an uplink signal or an uplink channel, and detects that the channel is busy, no downlink transmission is performed;
- the network side device does not detect an uplink signal or an uplink channel, and detects that the channel is empty, then perform downlink transmission;
- the network side device does not detect an uplink signal or an uplink channel, and detects that the channel is busy, then no downlink transmission is performed.
- the network side device does not detect the uplink signal or the uplink channel includes any of the following situations: the network side device performs the uplink signal detection and/or the uplink channel detection, but does not detect the uplink signal or the uplink channel; the network side device does not perform the uplink Signal detection and uplink channel detection.
- the second transmission module 330 is specifically configured to perform any one of the following:
- the network side device shares the COT of the terminal for downlink transmission, and the transmission time does not exceed the COT of the terminal;
- the network side device itself initiates COT for downlink transmission.
- the second transmission module 330 is further configured to receive third indication information of the terminal, where the third indication information indicates that the network side device is allowed to share the COT of the terminal.
- the FFP start position of the terminal is later than the FFP start position of the network side device
- the second transmission module 330 is further configured to send second indication information to the terminal.
- the second indication information indicates that the terminal is allowed to share the COT of the network side device.
- the second transmission module 330 is further configured to send first indication information to the terminal, where the first indication information indicates that the terminal is allowed to initiate COT for uplink transmission.
- FIG. 12 is a schematic diagram of the hardware structure of a terminal for implementing various embodiments of the present invention.
- the terminal 40 includes but is not limited to: a radio frequency unit 41, a network module 42, an audio output unit 43, The input unit 44, the sensor 45, the display unit 46, the user input unit 47, the interface unit 48, the memory 49, the processor 410, and the power supply 411 and other components.
- the terminal structure shown in FIG. 12 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange different components.
- the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
- the processor 410 is configured to perform uplink transmission according to fixed frame period FFP configuration information and channel status.
- the FFP configuration information includes at least one of the FFP start position and FFP length of the terminal, and the FFP start of the network side device. At least one of the start position and the FFP length, and the FFP start position of the terminal is different from the FFP start position of the network side device.
- the radio frequency unit 41 can be used for receiving and sending signals in the process of sending and receiving information or talking. Specifically, after receiving the downlink data from the base station, it is processed by the processor 410; Uplink data is sent to the base station.
- the radio frequency unit 41 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
- the radio frequency unit 41 can also communicate with the network and other devices through a wireless communication system.
- the terminal provides users with wireless broadband Internet access through the network module 42, such as helping users to send and receive emails, browse web pages, and access streaming media.
- the audio output unit 43 may convert the audio data received by the radio frequency unit 41 or the network module 42 or stored in the memory 49 into an audio signal and output it as sound. Moreover, the audio output unit 43 may also provide audio output related to a specific function performed by the terminal 40 (for example, call signal reception sound, message reception sound, etc.).
- the audio output unit 43 includes a speaker, a buzzer, a receiver, and the like.
- the input unit 44 is used to receive audio or video signals.
- the input unit 44 may include a graphics processing unit (GPU) 441 and a microphone 442, and the graphics processor 441 is configured to respond to still pictures or video images obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed.
- the processed image frame may be displayed on the display unit 46.
- the image frame processed by the graphics processor 441 may be stored in the memory 49 (or other storage medium) or sent via the radio frequency unit 41 or the network module 42.
- the microphone 442 can receive sound, and can process such sound into audio data.
- the processed audio data can be converted into a format that can be sent to the mobile communication base station via the radio frequency unit 41 for output in the case of a telephone call mode.
- the terminal 40 also includes at least one sensor 45, such as a light sensor, a motion sensor, and other sensors.
- the light sensor includes an ambient light sensor and a proximity sensor.
- the ambient light sensor can adjust the brightness of the display panel 461 according to the brightness of the ambient light.
- the proximity sensor can close the display panel 461 and/or when the terminal 40 is moved to the ear. Or backlight.
- the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify terminal gestures (such as horizontal and vertical screen switching, related games, Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, percussion), etc.; sensors 45 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared rays Sensors, etc., will not be repeated here.
- the display unit 46 is used to display information input by the user or information provided to the user.
- the display unit 46 may include a display panel 461, and the display panel 461 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.
- LCD liquid crystal display
- OLED organic light-emitting diode
- the user input unit 47 may be used to receive inputted number or character information, and generate key signal input related to user settings and function control of the terminal.
- the user input unit 47 includes a touch panel 471 and other input devices 472.
- the touch panel 471 also called a touch screen, can collect user touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 471 or near the touch panel 471. operate).
- the touch panel 471 may include two parts, a touch detection device and a touch controller.
- the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 410, the command sent by the processor 410 is received and executed.
- the touch panel 471 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave.
- the user input unit 47 may also include other input devices 472.
- other input devices 472 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
- the touch panel 471 may cover the display panel 461. When the touch panel 471 detects a touch operation on or near it, it transmits it to the processor 410 to determine the type of the touch event, and then the processor 410 determines the type of the touch event according to the touch The type of event provides corresponding visual output on the display panel 461.
- the touch panel 471 and the display panel 461 are used as two independent components to realize the input and output functions of the terminal, in some embodiments, the touch panel 471 and the display panel 461 may be integrated. Realize the input and output functions of the terminal, the specifics are not limited here.
- the interface unit 48 is an interface for connecting an external device to the terminal 40.
- the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (Input/Output, I/O) port, video I/O port, headphone port, etc.
- the interface unit 48 may be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the terminal 40 or may be used to communicate between the terminal 40 and the external device. Transfer data between.
- the memory 49 can be used to store software programs and various data.
- the memory 49 may mainly include a program storage area and a data storage area.
- the program storage area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of mobile phones (such as audio data, phone book, etc.), etc.
- the memory 49 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
- the processor 410 is the control center of the terminal. It uses various interfaces and lines to connect various parts of the entire terminal. Various functions of the terminal and processing data, so as to monitor the terminal as a whole.
- the processor 410 may include one or more processing units; preferably, the processor 410 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, application programs, etc., and the modem
- the processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 410.
- the terminal 40 may also include a power source 411 (such as a battery) for supplying power to various components.
- a power source 411 such as a battery
- the power source 411 may be logically connected to the processor 410 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. Function.
- the terminal 40 includes some functional modules not shown, which will not be repeated here.
- An embodiment of the present invention also provides a communication device, including a processor 410, a memory 49, and a computer program stored on the memory 49 and running on the processor 410.
- a communication device including a processor 410, a memory 49, and a computer program stored on the memory 49 and running on the processor 410.
- the computer program is executed by the processor 410, the above-mentioned non-operation is realized.
- Each process of the embodiment of the data transmission method in the authorized frequency band can achieve the same technical effect, and in order to avoid repetition, it will not be repeated here.
- the above-mentioned communication device may be a terminal, which may be a device that provides voice and/or other service data connectivity to the user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem.
- a wireless terminal can communicate with one or more core networks via a radio access network (RAN).
- the wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal For example, they can be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices that exchange language and/or data with the wireless access network.
- Wireless terminal can also be called system, subscriber unit (Subscriber Unit), subscriber station (Subscriber Station), mobile station (Mobile Station), mobile station (Mobile), remote station (Remote Station), remote terminal (Remote Terminal), connection The access terminal (Access Terminal), user terminal (User Terminal), user agent (User Agent), and user equipment (User Device or User Equipment) are not limited here.
- the embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored.
- a computer program is stored.
- the computer program is executed by a processor, each process of the above-mentioned terminal-side unlicensed frequency band data transmission method embodiment is implemented. , And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here.
- the computer-readable storage medium such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk, etc.
- inventions of the present invention also provide a network-side device.
- the network-side device includes a processor, a memory, and a computer program that is stored in the memory and can run on the processor.
- the processor executes
- the computer program implements the steps in the data transmission method of the unlicensed frequency band as described above, and can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.
- the embodiment of the present invention also provides a network side device.
- the network side equipment 500 includes: an antenna 51, a radio frequency device 52, and a baseband device 53.
- the antenna 51 is connected to the radio frequency device 52.
- the radio frequency device 52 receives information through the antenna 51 and sends the received information to the baseband device 53 for processing.
- the baseband device 53 processes the information to be sent and sends it to the radio frequency device 52, and the radio frequency device 52 processes the received information and sends it out via the antenna 51.
- the foregoing frequency band processing device may be located in the baseband device 53, and the method executed by the network side device in the above embodiment may be implemented in the baseband device 53.
- the baseband device 53 includes a processor 54 and a memory 55.
- the baseband device 53 may include, for example, at least one baseband board, and multiple chips are arranged on the baseband board, as shown in FIG.
- the network side device shown in the above method embodiment operates.
- the baseband device 53 may also include a network interface 56 for exchanging information with the radio frequency device 52, and the interface is, for example, a common public radio interface (CPRI).
- CPRI common public radio interface
- the processor here can be a processor or a collective term for multiple processing elements.
- the processor can be a CPU or an ASIC, or it can be configured to implement one or the other of the methods executed by the network side device above.
- Multiple integrated circuits such as: one or more microprocessors DSP, or, one or more field programmable gate array FPGAs, etc.
- the storage element can be a memory or a collective term for multiple storage elements.
- the memory 55 may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
- the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
- the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
- RAM static random access memory
- DRAM dynamic random access memory
- DRAM synchronous dynamic random access memory
- DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
- Enhanced SDRAM, ESDRAM Synchronous Link Dynamic Random Access Memory
- Synchlink DRAM Synchronous Link Dynamic Random Access Memory
- DRRAM Direct Rambus RAM
- the network-side device of the embodiment of the present invention further includes: a computer program stored in the memory 55 and that can be run on the processor 54.
- the processor 54 calls the computer program in the memory 55 to execute the operations performed by each module shown in FIG. method.
- the computer program when called by the processor 54, it can be used to perform downlink transmission according to fixed frame period FFP configuration information and channel status, where the FFP configuration information includes at least one of the FFP starting position and the FFP length of the network side device, And at least one of the FFP start position of the terminal and the FFP length, the FFP start position of the network side device is different from the FFP start position of the terminal.
- the FFP configuration information includes at least one of the FFP starting position and the FFP length of the network side device, And at least one of the FFP start position of the terminal and the FFP length, the FFP start position of the network side device is different from the FFP start position of the terminal.
- the embodiment of the present invention also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it realizes the data of the unlicensed frequency band applied to the network side device as described above.
- the steps of the transmission method can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.
- the disclosed 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 invention 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 the present invention essentially or the part that contributes to the prior art 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-side device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present invention.
- the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.
- the program can be stored in a computer readable storage medium. When executed, it may include the procedures of the above-mentioned method embodiments.
- the storage medium may be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.
- modules, units, and sub-units can be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (Digital Signal Processor, DSP), and digital signal processing equipment (DSP Device, DSPD). ), programmable logic devices (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, used to execute the present disclosure Other electronic units or a combination of the functions described above.
- ASIC application specific integrated circuits
- DSP Digital Signal Processor
- DSP Device digital signal processing equipment
- PLD programmable logic devices
- Field-Programmable Gate Array Field-Programmable Gate Array
- FPGA Field-Programmable Gate Array
- the technology described in the embodiments of the present disclosure can be implemented by modules (for example, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
- the software codes can be stored in the memory and executed by the processor.
- the memory can be implemented in the processor or external to the processor.
- each component or each step can be decomposed and/or recombined. These decomposition and/or recombination should be regarded as equivalent solutions of the present invention.
- the steps of performing the above-mentioned series of processing can naturally be performed in a time sequence in the order of description, but do not necessarily need to be performed in a time sequence, and some steps can be performed in parallel or independently of each other.
- a person of ordinary skill in the art can understand that all or any of the steps or components of the method and device of the present invention can be used in any computing device (including a processor, storage medium, etc.) or a network of computing devices with hardware and firmware. , Software, or a combination of them, this can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.
- the purpose of the present invention can also be achieved by running a program or a group of programs on any computing device.
- the computing device may be a well-known general-purpose device. Therefore, the purpose of the present invention can also be achieved only by providing a program product containing program code for realizing the method or device.
- a program product also constitutes the present invention
- a storage medium storing such a program product also constitutes the present invention.
- the storage medium may be any well-known storage medium or any storage medium developed in the future. It should also be pointed out that in the device and method of the present invention, obviously, each component or each step can be decomposed and/or recombined.
Abstract
Description
Claims (50)
- 一种非授权频段的数据传输方法,应用于终端,包括:根据固定帧周期FFP配置信息和信道状态进行上行传输,所述FFP配置信息包括终端的FFP起始位置和FFP长度中的至少一项,以及网络侧设备的FFP起始位置和FFP长度中的至少一项,所述终端的FFP起始位置与网络侧设备的FFP起始位置不同。
- 根据权利要求1所述的非授权频段的数据传输方法,其中,所述FFP配置信息由所述网络侧设备发送。
- 根据权利要求1或2所述的非授权频段的数据传输方法,其中,所述终端的FFP的长度与所述网络侧设备的FFP的长度不同;或所述终端的FFP的长度与所述网络侧设备的FFP的长度相同。
- 根据权利要求1或2所述的非授权频段的数据传输方法,其中,所述终端的FFP起始位置晚于所述网络侧设备的FFP起始位置,所述根据FFP配置信息和信道状态进行上行传输包括:在所述FFP配置信息指示的FFP空闲时段执行以下至少一项操作:信道空闲估计CCA以获取信道状态,下行信号检测以获取检测结果,下行信道检测以获取检测结果;根据信道状态和检测结果中的至少一项判断是否进行上行传输。
- 根据权利要求4所述的非授权频段的数据传输方法,其中,所述根据信道状态判断是否进行上行传输包括以下任一项:若所述终端检测到下行信号或下行信道,且检测到信道为空,则进行上行传输;若所述终端检测到下行信号或下行信道,且检测到信道为忙,则不进行上行传输;若所述终端未检测到下行信号或下行信道,且检测到信道为空,则进行上行传输;若所述终端未检测到下行信号或下行信道,且检测到信道为忙,则不进行上行传输。
- 根据权利要求5所述的非授权频段的数据传输方法,其中,所述进行上行传输包括以下任一项:所述终端共享所述网络侧设备的信道占用时间COT进行上行传输,传输时长不超出所述网络侧设备的COT;所述终端自身发起COT进行上行传输。
- 根据权利要求5所述的非授权频段的数据传输方法,其中,所述上行传输为物理随机接入信道PRACH传输,所述进行上行传输包括以下任一项:若所述终端检测到下行信号或下行信道,且检测到信道为空,则所述终端在自身FFP中的随机接入信道RACH时机中选取任一个进行PRACH传输,且传输时长不超出所述网络侧设备的COT;若所述终端未检测到下行信号或下行信道,且检测到信道为空,则所述终端在自身FFP中的RACH时机中的第一个RACH时机上进行PRACH传输。
- 根据权利要求6所述的非授权频段的数据传输方法,其中,所述终端自身发起COT进行上行传输包括以下任一项:接收所述网络侧设备的第一指示信息,所述第一指示信息指示允许所述终端发起COT进行上行传输;或所述终端自身判断是否发起COT。
- 根据权利要求6所述的非授权频段的数据传输方法,其中,所述终端共享所述网络侧设备的COT进行上行传输之前,所述方法还包括:接收所述网络侧设备的第二指示信息,所述第二指示信息指示允许所述终端共享所述网络侧设备的COT。
- 根据权利要求1或2所述的非授权频段的数据传输方法,其中,所述终端的FFP起始位置早于所述网络侧设备的FFP起始位置,所述方法还包括:向所述网络侧设备发送第三指示信息,所述第三指示信息指示允许所述网络侧设备共享所述终端的COT。
- 根据权利要求2所述的非授权频段的数据传输方法,其中,所述FFP配置信息通过无线资源控制RRC消息或物理层信令承载。
- 根据权利要求1所述的非授权频段的数据传输方法,其中,所述FFP起始位置为绝对时域位置或相对于参考位置的偏移值。
- 根据权利要求4所述的非授权频段的数据传输方法,其中,所述终端的FFP的前X个符号内的上行传输资源为无效的,X为大于等于1的整数。
- 一种非授权频段的数据传输方法,应用于网络侧设备,包括:根据固定帧周期FFP配置信息和信道状态进行下行传输,所述FFP配置信息包括网络侧设备的FFP起始位置和FFP长度中的至少一项,以及终端的FFP起始位置和FFP长度中的至少一项,所述网络侧设备的FFP起始位置与终端的FFP起始位置不同。
- 根据权利要求14所述的非授权频段的数据传输方法,还包括:向所述终端发送所述FFP配置信息。
- 根据权利要求14或15所述的非授权频段的数据传输方法,其中,所述终端的FFP的长度与所述网络侧设备的FFP的长度不同;或所述终端的FFP的长度与所述网络侧设备的FFP的长度相同。
- 根据权利要求14或15所述的非授权频段的数据传输方法,其中,所述网络侧设备的FFP起始位置晚于所述终端的FFP起始位置,所述根据FFP配置信息和信道状态进行下行传输包括:在所述FFP配置信息指示的FFP空闲时段执行以下至少一项操作:信道空闲估计CCA以获取信道状态,上行信号检测以获取检测结果,上行信道检测以获取检测结果;根据信道状态和检测结果中的至少一项判断是否进行下行传输。
- 根据权利要求17所述的非授权频段的数据传输方法,其中,所述根据信道状态判断是否进行下行传输包括以下任一项:若所述网络侧设备检测到上行信号或上行信道,且检测到信道为空,则进行下行传输;若所述网络侧设备检测到上行信号或上行信道,且检测到信道为忙,则不进行下行传输;若所述网络侧设备未检测到上行信号或上行信道,且检测到信道为空, 则进行下行传输;若所述网络侧设备未检测到上行信号或上行信道,且检测到信道为忙,则不进行下行传输。
- 根据权利要求18所述的非授权频段的数据传输方法,其中,所述进行下行传输包括以下任一项:所述网络侧设备共享所述终端的COT进行下行传输,传输时长不超出所述终端的COT;所述网络侧设备自身发起COT进行下行传输。
- 根据权利要求19所述的非授权频段的数据传输方法,其中,所述网络侧设备共享所述终端的COT进行下行传输之前,所述方法还包括:接收所述终端的第三指示信息,所述第三指示信息指示允许所述网络侧设备共享所述终端的COT。
- 根据权利要求14或15所述的非授权频段的数据传输方法,其中,所述终端的FFP起始位置晚于所述网络侧设备的FFP起始位置,所述方法还包括:向所述终端发送第二指示信息,所述第二指示信息指示允许所述终端共享所述网络侧设备的COT。
- 根据权利要求14所述的非授权频段的数据传输方法,还包括:向所述终端发送第一指示信息,所述第一指示信息指示允许所述终端发起COT进行上行传输。
- 根据权利要求15所述的非授权频段的数据传输方法,其中,所述FFP配置信息通过无线资源控制RRC消息或物理层信令承载。
- 根据权利要求14所述的非授权频段的数据传输方法,其中,所述FFP起始位置为绝对时域位置或相对于参考位置的偏移值。
- 一种非授权频段的数据传输装置,应用于终端,包括:第一传输模块,用于根据固定帧周期FFP配置信息和信道状态进行上行传输,所述FFP配置信息包括终端的FFP起始位置和FFP长度中的至少一项,以及网络侧设备的FFP起始位置和FFP长度中的至少一项,所述终端的FFP起始位置与网络侧设备的FFP起始位置不同。
- 根据权利要求25所述的非授权频段的数据传输装置,其中,所述FFP配置信息由所述网络侧设备发送。
- 根据权利要求25或26所述的非授权频段的数据传输装置,其中,所述终端的FFP的长度与所述网络侧设备的FFP的长度不同;或所述终端的FFP的长度与所述网络侧设备的FFP的长度相同。
- 根据权利要求25或26所述的非授权频段的数据传输装置,其中,所述终端的FFP起始位置晚于所述网络侧设备的FFP起始位置,所述第一传输模块具体用于在所述FFP配置信息指示的FFP空闲时段执行以下至少一项操作:信道空闲估计CCA以获取信道状态,下行信号检测以获取检测结果,下行信道检测以获取检测结果;根据信道状态和检测结果中的至少一项判断是否进行上行传输。
- 根据权利要求28所述的非授权频段的数据传输装置,其中,所述第一传输模块具体用于执行以下任一项:若所述终端检测到下行信号或下行信道,且检测到信道为空,则进行上行传输;若所述终端检测到下行信号或下行信道,且检测到信道为忙,则不进行上行传输;若所述终端未检测到下行信号或下行信道,且检测到信道为空,则进行上行传输;若所述终端未检测到下行信号或下行信道,且检测到信道为忙,则不进行上行传输。
- 根据权利要求29所述的非授权频段的数据传输装置,其中所述第一传输模块具体用于执行以下任一项:所述终端共享所述网络侧设备的信道占用时间COT进行上行传输,传输时长不超出所述网络侧设备的COT;所述终端自身发起COT进行上行传输。
- 根据权利要求29所述的非授权频段的数据传输装置,其中,所述上行传输为物理随机接入信道PRACH传输,所述第一传输模块具体用于执行以下任一项:若所述终端检测到下行信号或下行信道,且检测到信道为空,则所述终端在自身FFP中的随机接入信道RACH时机中选取任一个进行PRACH传输,且传输时长不超出所述网络侧设备的COT;若所述终端未检测到下行信号或下行信道,且检测到信道为空,则所述终端在自身FFP中的RACH时机中的第一个RACH时机上进行PRACH传输。
- 根据权利要求30所述的非授权频段的数据传输装置,其中,所述第一传输模块具体用于执行以下任一项:接收所述网络侧设备的第一指示信息,所述第一指示信息指示允许所述终端发起COT进行上行传输;或所述终端自身判断是否发起COT。
- 根据权利要求30所述的非授权频段的数据传输装置,其中,所述第一传输模块还用于:接收所述网络侧设备的第二指示信息,所述第二指示信息指示允许所述终端共享所述网络侧设备的COT。
- 根据权利要求25或26所述的非授权频段的数据传输装置,其中,所述终端的FFP起始位置早于所述网络侧设备的FFP起始位置,所述第一传输模块还用于:向所述网络侧设备发送第三指示信息,所述第三指示信息指示允许所述网络侧设备共享所述终端的COT。
- 根据权利要求26所述的非授权频段的数据传输装置,其中,所述FFP配置信息通过无线资源控制RRC消息或物理层信令承载。
- 根据权利要求25所述的非授权频段的数据传输装置,其中,所述FFP起始位置为绝对时域位置或相对于参考位置的偏移值。
- 根据权利要求28所述的非授权频段的数据传输装置,其中,所述终端的FFP的前X个符号内的上行传输资源为无效的,X为大于等于1的整数。
- 一种非授权频段的数据传输装置,应用于网络侧设备,包括:第二传输模块,用于根据固定帧周期FFP配置信息和信道状态进行下行 传输,所述FFP配置信息包括网络侧设备的FFP起始位置和FFP长度中的至少一项,以及终端的FFP起始位置和FFP长度中的至少一项,所述网络侧设备的FFP起始位置与终端的FFP起始位置不同。
- 根据权利要求38所述的非授权频段的数据传输装置,其中,所述第二传输模块还用于向所述终端发送所述FFP配置信息。
- 根据权利要求38或39所述的非授权频段的数据传输装置,其中,所述终端的FFP的长度与所述网络侧设备的FFP的长度不同;或所述终端的FFP的长度与所述网络侧设备的FFP的长度相同。
- 根据权利要求38或39所述的非授权频段的数据传输装置,其中,所述网络侧设备的FFP起始位置晚于所述终端的FFP起始位置,所述第二传输模块具体用于在所述FFP配置信息指示的FFP空闲时段执行以下至少一项操作:信道空闲估计CCA以获取信道状态,上行信号检测以获取检测结果,上行信道检测以获取检测结果;根据信道状态和检测结果中的至少一项判断是否进行下行传输。
- 根据权利要求41所述的非授权频段的数据传输装置,其中,所述第二传输模块具体用于执行以下任一项:若所述网络侧设备检测到上行信号或上行信道,且检测到信道为空,则进行下行传输;若所述网络侧设备检测到上行信号或上行信道,且检测到信道为忙,则不进行下行传输;若所述网络侧设备未检测到上行信号或上行信道,且检测到信道为空,则进行下行传输;若所述网络侧设备未检测到上行信号或上行信道,且检测到信道为忙,则不进行下行传输。
- 根据权利要求42所述的非授权频段的数据传输装置,其中,所述第二传输模块具体用于执行以下任一项:所述网络侧设备共享所述终端的COT进行下行传输,传输时长不超出所述终端的COT;所述网络侧设备自身发起COT进行下行传输。
- 根据权利要求43所述的非授权频段的数据传输装置,其中,所述第二传输模块还用于:接收所述终端的第三指示信息,所述第三指示信息指示允许所述网络侧设备共享所述终端的COT。
- 根据权利要求38或39所述的非授权频段的数据传输装置,其中,所述终端的FFP起始位置晚于所述网络侧设备的FFP起始位置,所述第二传输模块还用于:向所述终端发送第二指示信息,所述第二指示信息指示允许所述终端共享所述网络侧设备的COT。
- 根据权利要求38所述的非授权频段的数据传输装置,其中,所述第二传输模块还用于:向所述终端发送第一指示信息,所述第一指示信息指示允许所述终端发起COT进行上行传输。
- 根据权利要求39所述的非授权频段的数据传输装置,其中,所述FFP配置信息通过无线资源控制RRC消息或物理层信令承载。
- 根据权利要求38所述的非授权频段的数据传输装置,其中,所述FFP起始位置为绝对时域位置或相对于参考位置的偏移值。
- 一种通信设备,包括处理器、存储器以及存储于所述存储器上并在所述处理器上运行的计算机程序,所述处理器执行所述计算机程序时实现如权利要求1至24中任一项所述的非授权频段的数据传输方法的步骤。
- 一种计算机可读存储介质,所述计算机可读存储介质上存储有计算机程序,所述计算机程序被处理器执行时实现如权利要求1至24中任一项所述的非授权频段的数据传输方法的步骤。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/880,571 US20220386371A1 (en) | 2020-02-05 | 2022-08-03 | Data transmission method and apparatus for unlicensed band, and communication device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010080691.6A CN113225832B (zh) | 2020-02-05 | 2020-02-05 | 非授权频段的数据传输方法及装置、通信设备 |
CN202010080691.6 | 2020-02-05 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/880,571 Continuation US20220386371A1 (en) | 2020-02-05 | 2022-08-03 | Data transmission method and apparatus for unlicensed band, and communication device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021155763A1 true WO2021155763A1 (zh) | 2021-08-12 |
Family
ID=77085642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2021/074343 WO2021155763A1 (zh) | 2020-02-05 | 2021-01-29 | 非授权频段的数据传输方法及装置、通信设备 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20220386371A1 (zh) |
CN (1) | CN113225832B (zh) |
WO (1) | WO2021155763A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024055739A1 (zh) * | 2022-09-16 | 2024-03-21 | 青岛海尔智能技术研发有限公司 | 用于确定上行信道的方法及终端、网络设备 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220322425A1 (en) * | 2020-08-05 | 2022-10-06 | Apple Inc. | UE-Initiated Channel Access Procedure in Wireless Communication on Shared Spectrum |
WO2024045011A1 (en) * | 2022-08-31 | 2024-03-07 | Qualcomm Incorporated | Channel access techniques for frame-based equipment in sidelink communications using shared spectrum |
WO2024055231A1 (zh) * | 2022-09-15 | 2024-03-21 | Oppo广东移动通信有限公司 | 无线通信的方法及设备 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170332358A1 (en) * | 2016-05-12 | 2017-11-16 | Samsung Electronics Co., Ltd. | Method and apparatus for uplink resource assignment for cellular network using unlicensed bands |
US20190335500A1 (en) * | 2018-04-30 | 2019-10-31 | Qualcomm Incorporated | Aligned lbt gaps for single operator fbe nr-ss |
CN110537385A (zh) * | 2019-06-25 | 2019-12-03 | 北京小米移动软件有限公司 | 下行传输的检测方法、装置、设备及存储介质 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6705835B2 (ja) * | 2015-04-08 | 2020-06-03 | インターデイジタル パテント ホールディングス インコーポレイテッド | 非認可帯域におけるlte動作のためのシステムおよび方法 |
-
2020
- 2020-02-05 CN CN202010080691.6A patent/CN113225832B/zh active Active
-
2021
- 2021-01-29 WO PCT/CN2021/074343 patent/WO2021155763A1/zh active Application Filing
-
2022
- 2022-08-03 US US17/880,571 patent/US20220386371A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170332358A1 (en) * | 2016-05-12 | 2017-11-16 | Samsung Electronics Co., Ltd. | Method and apparatus for uplink resource assignment for cellular network using unlicensed bands |
US20190335500A1 (en) * | 2018-04-30 | 2019-10-31 | Qualcomm Incorporated | Aligned lbt gaps for single operator fbe nr-ss |
CN110537385A (zh) * | 2019-06-25 | 2019-12-03 | 北京小米移动软件有限公司 | 下行传输的检测方法、装置、设备及存储介质 |
Non-Patent Citations (1)
Title |
---|
QUALCOMM INCORPORATED: "DL signals and channels for NR-U", 3GPP DRAFT; R1-1911095 7.2.2.1.2 DL SIGNALS AND CHANNELS FOR NR-U, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Chongqing, CN; 20191014 - 20191020, 5 October 2019 (2019-10-05), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051789872 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024055739A1 (zh) * | 2022-09-16 | 2024-03-21 | 青岛海尔智能技术研发有限公司 | 用于确定上行信道的方法及终端、网络设备 |
Also Published As
Publication number | Publication date |
---|---|
CN113225832A (zh) | 2021-08-06 |
US20220386371A1 (en) | 2022-12-01 |
CN113225832B (zh) | 2023-02-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7369782B2 (ja) | ハイブリッド自動再送要求harqフィードバック方法、端末及びネットワーク機器 | |
WO2021155763A1 (zh) | 非授权频段的数据传输方法及装置、通信设备 | |
JP7153124B2 (ja) | チャネル検出指示方法、端末及びネットワーク機器 | |
WO2019076171A1 (zh) | 非授权频段下的信息传输方法、终端及网络设备 | |
EP3793121B1 (en) | Quasi co-location configuration method, terminal, and network device | |
WO2020151743A1 (zh) | 随机接入方法及终端 | |
WO2019214664A1 (zh) | 传输资源指示方法、网络设备及终端 | |
JP7089070B2 (ja) | 同期信号ブロックの伝送方法、ネットワーク装置及び端末 | |
WO2020024811A1 (zh) | 信息传输方法、终端及网络设备 | |
US20210250936A1 (en) | Information transmission method and communications device | |
WO2020156073A1 (zh) | 非授权频段的信息传输方法、终端及网络设备 | |
WO2021147761A1 (zh) | 上行传输处理方法及装置、终端 | |
WO2020011096A1 (zh) | 上行传输方法及终端 | |
WO2019076170A1 (zh) | 非授权频段下的信息传输方法、网络设备及终端 | |
US20210314779A1 (en) | Information transmission method in unlicensed band, terminal, and network device | |
WO2020151706A1 (zh) | 随机接入传输方法及终端 | |
WO2020147826A1 (zh) | 随机接入传输方法及终端 | |
CN110784873A (zh) | 非授权频段的信息传输方法、终端及网络设备 | |
WO2021088783A1 (zh) | 物理下行控制信道的检测方法及装置 | |
WO2021208938A1 (zh) | 确定数据传输层数的方法及装置、通信设备 | |
CN111315015B (zh) | 非授权频段信息传输方法、终端及网络设备 | |
US20210329470A1 (en) | Information transmission method, terminal and network device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21750377 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 21750377 Country of ref document: EP Kind code of ref document: A1 |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 22/02/2023) |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 21750377 Country of ref document: EP Kind code of ref document: A1 |