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WO2019076170A1 - Procédé de transmission d'informations dans une bande sans licence, et dispositif de réseau et terminal - Google Patents

Procédé de transmission d'informations dans une bande sans licence, et dispositif de réseau et terminal Download PDF

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Publication number
WO2019076170A1
WO2019076170A1 PCT/CN2018/104954 CN2018104954W WO2019076170A1 WO 2019076170 A1 WO2019076170 A1 WO 2019076170A1 CN 2018104954 W CN2018104954 W CN 2018104954W WO 2019076170 A1 WO2019076170 A1 WO 2019076170A1
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WIPO (PCT)
Prior art keywords
bwp
bwps
channel
idle
transmission
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Ceased
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PCT/CN2018/104954
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English (en)
Chinese (zh)
Inventor
姜蕾
潘学明
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to an information transmission method, a network device, and a terminal in an unlicensed frequency band.
  • the unlicensed band can be used as a supplement to the licensed band to help operate. Businesses expand their services. In keeping with NR deployments and maximizing NR-based unlicensed access as much as possible, unlicensed bands can operate in the 5 GHz, 37 GHz, and 60 GHz bands. The large bandwidth (80MHz or 100MHz) of the unlicensed band can reduce the implementation complexity of network devices and terminals.
  • the unlicensed band is shared by a variety of radio access technologies (RATs), such as Wireless Fidelity (WiFi), radar, and Long Term Evolution License Assisted Access (LTE-). LAA), etc. Therefore, in some countries or regions, unlicensed bands must be used in accordance with certain regulations to ensure that all devices can use the resources fairly, such as Listen Before Talk (LBT). Rules such as Maximum Channel Occupancy Time (MCOT).
  • RATs radio access technologies
  • WiFi Wireless Fidelity
  • LTE- Long Term Evolution License Assisted Access
  • LAA Long Term Evolution License Assisted Access
  • the maximum channel bandwidth (Channel Bandwidth) of each carrier can reach 400 MHz.
  • the maximum bandwidth supported by the terminal can be less than 400 MHz, and the terminal can work on multiple small bandwidth parts (BWP).
  • Each bandwidth portion corresponds to a Numerology, Bandwidth, and Frequency Location.
  • the network device can configure more than one BWP for the terminal. At this time, the network device needs to tell the terminal which BWP to work on, that is, which BWP is activated.
  • the activation or deactivation of the BWP can be indicated by Downlink Control Information (DCI) signaling.
  • DCI Downlink Control Information
  • the network device or the terminal needs to perform channel sensing before transmitting on the activated BWP, and the information can be transmitted when the channel is empty.
  • channel listening is performed only for the activated BWP, if the channel is detected to be busy, the network device or the terminal cannot transmit, but the network device configures other inactive BWPs for the terminal may be idle, and this part of the resources will be waste.
  • an embodiment of the present disclosure provides an information transmission method in an unlicensed frequency band, which is applied to a network device, and includes:
  • the first BWP is at least one BWP configured by the network device as the terminal;
  • the channel listening result indicates that there is a BWP in the first BWP where the transmission channel is idle, selecting at least one BWP in the BWP in which the transmission channel is idle is determined as the first active BWP;
  • an embodiment of the present disclosure further provides a network device, including:
  • a first listening module configured to separately listen to a transmission channel of at least one BWP in the first bandwidth portion BWP in the unlicensed frequency band, to obtain a channel listening result, where the first BWP is configured by the network device as a terminal At least one BWP;
  • a first processing module configured to: when the channel listening result indicates that the BWP exists in the first BWP, the at least one BWP is determined to be the first active BWP;
  • the first sending module is configured to send information to the terminal on the first activated BWP.
  • an embodiment of the present disclosure provides a network device, where the network device includes a processor, a memory, and a computer program stored on the memory and operable on the processor, where the processor implements the unlicensed frequency band when executing the computer program
  • the network device includes a processor, a memory, and a computer program stored on the memory and operable on the processor, where the processor implements the unlicensed frequency band when executing the computer program
  • an embodiment of the present disclosure provides an information transmission method in an unlicensed frequency band, which is applied to a terminal, including:
  • the transmission time unit comprises: a slot slot or a minislot mini -slot.
  • an embodiment of the present disclosure provides a terminal, including:
  • the first receiving module is configured to receive downlink control information DCI sent by the network device to indicate the first active bandwidth part BWP on the at least one BWP corresponding to the primary cell or the primary and secondary cells of the terminal;
  • a first activation module configured to activate the first activated BWP according to the DCI
  • a second receiving module configured to receive information sent by the network device on the activated first BWP in the next available transmission time unit of the secondary cell with respect to the transmission time of the DCI; where the transmission time unit includes: Slot slot or minislot mini-slot.
  • an embodiment of the present disclosure provides a terminal, where the terminal includes a processor, a memory, and a computer program stored on the memory and operable on the processor, where the computer program is executed by the processor to implement the unlicensed frequency band. The steps of the information transfer method.
  • an embodiment of the present disclosure provides a computer readable storage medium.
  • the computer readable storage medium stores a computer program.
  • the step of implementing the information transmission method in the unlicensed frequency band is implemented.
  • FIG. 1 is a schematic flowchart of a method for transmitting information on a network device side in an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of resource sensing of scenario 1 of the embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of resource sensing of scenario 2 in the embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram showing resource mapping of information transmission according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a module of a network device according to an embodiment of the present disclosure.
  • Figure 6 is a block diagram showing a network device of an embodiment of the present disclosure.
  • FIG. 7 is a schematic flowchart diagram of a method for transmitting information on a terminal side according to an embodiment of the present disclosure
  • FIG. 8 is a schematic structural diagram of a module of a terminal in an embodiment of the present disclosure.
  • Figure 9 shows a block diagram of a terminal of an embodiment of the present disclosure.
  • an embodiment of the present disclosure provides an information transmission method in an unlicensed frequency band, which is applied to a network device, and specifically includes the following steps:
  • Step 11 Listening to the transmission channel of at least one BWP in the first bandwidth part BWP in the unlicensed frequency band, respectively, to obtain a channel sensing result.
  • the first BWP is a BWP configured by the network device for the terminal, and the first BWP is a BWP configured by the network device for the terminal, which refers to the type of the BWP, not the number, and the network device can configure one or at least two for the terminal. BWP, these BWP can be called the first BWP.
  • the network device may configure at least two BWPs for the terminal, and respectively perform part or all of the configured at least two BWPs, in order to avoid the problem that the transmission cannot be transmitted only by listening to a specific BWP (such as activating an active BWP). Listening to know the channel listening result of the transmission channel of each BWP, thereby determining the BWP of the transmission channel idle as the active BWP according to the channel sensing result.
  • a specific BWP such as activating an active BWP
  • the step 11 is specifically: listening to the transmission channel of the first BWP of the secondary cell (Scell) in the unlicensed frequency band to obtain a channel listening result.
  • the first BWP is at least one BWP configured by the network device as a secondary cell of the terminal.
  • Step 12 If the channel listening result indicates that there is a BWP in which the transmission channel is idle in the first BWP, select at least one BWP in the BWP in which the transmission channel is idle to determine the first active BWP.
  • the at least one BWP may be selected as the first active BWP in the BWP in which the transport channel is idle, wherein the selected number may be determined according to the terminal capability reported by the terminal. For example, the number of active BWPs supported by the terminal at the same time. It is worth noting that the network device determines, after the first activation of the BWP, which BWPs are the first active BWPs, so that the terminal activates the corresponding BWPs.
  • Step 13 Send information to the terminal on the first active BWP.
  • the network device After determining the first active BWP, the network device sends downlink information to the terminal on the BWPs.
  • the terminal can simultaneously support one active BWP, or at least two activated BWPs for data transmission.
  • the following embodiment will describe the information transmission method in the unlicensed frequency band in combination with different terminal capabilities.
  • Scene 1 The terminal supports only one active BWP at the same time.
  • the network device can still configure at least two BWPs as candidate transmission resources for the terminal.
  • step 11 includes: listening to all BWPs in the first BWP in the unlicensed frequency band, respectively, to obtain a channel listening result. That is, the network device listens to all configured BWPs (configured BWPs) of the terminal.
  • Step 12 specifically includes: when there is an active BWP used in the last transmission in the BWP in which the transmission channel is idle, then the activated BWP is the first active BWP; or, when the transmission channel is idle, there is no previous transmission used in the BWP.
  • the BWP is activated, a BWP selected in the BWP in which the transmission channel is idle is determined as the first active BWP.
  • the terminal when the terminal can only transmit on one active BWP at the same time, the terminal has an active BWP (or BWPp) in the primary cell (Primary cell, Pcell/Primary Secondary Cell, PScell).
  • the cell that is, the unlicensed band, has an active BWP (or BWPs).
  • the network device listens on all configured BWPs of the terminal. When the BWP that detects the idle of the transmission channel includes the active BWPs used last time, the active BWPs are determined as the first active BWP, and the downlink information is sent on the active BWPs.
  • the network device can randomly select one of the free BWPs as the first active BWP (such as BWP1 in Figure 2).
  • Scenario 2 The terminal supports at least two active BWPs at the same time.
  • step 11 includes: listening to all BWPs in the first BWP in the unlicensed frequency band, respectively, to obtain a channel listening result. That is, the network device listens to all configured BWPs (configured BWPs) of the terminal.
  • step 12 includes: if the channel listening result indicates that the transmission channel of all BWPs in the first BWP is idle, determining all BWPs in the first BWP. For the first activation BWP; or, if the channel listening result indicates that the transmission channel of the partial BWP in the first BWP is idle, then all the BWPs of the transmission channel idle are determined as the first active BWP, and continue to the other in the first BWP.
  • the BWP's transmission channel is listening. If the transmission channel of other BWPs is detected to be idle, the other BWPs are added to the first active BWP.
  • the other BWP mentioned here refers to the BWP that is temporarily busy in the first BWP.
  • the terminal has multiple (such as Np) active BWPs in the Pcell/PScell, and there are Ns active BWPs in the Scell, that is, the unlicensed frequency band.
  • the number of BWPs (configured BWPs) on the Pcell/PScell is Cp
  • the number of BWPs configured on the Scell is Cs
  • the number of BWPs in the first BWP is Cs.
  • the network device determines that all BWPs in the first BWP are the first active BWP. As shown in FIG. 3, if the network device detects that the transmission channel of some BWPs in the first BWP is idle (such as BWP1 and BWP2 in FIG. 3) when the network device is first listening, the network device will transmit all BWPs with the channel idle ( For example, BWP1 and BWP2) are determined as the first activated BWP. Further, the network device may continue to listen to the BWP (such as BWP3 in FIG. 3) that is listening to be busy.
  • the BWP such as BWP3 in FIG. 3
  • the network device When the subsequent transmission channel of the BWP is idle, it is determined as a new activated BWP. Added to the first activated BWP. As shown in FIG. 3, at the initial moment, the network device simultaneously listens to the three BWPs of BWP1, BWP2, and BWP3, and the interception result shows that the transmission channels of BWP1 and BWP2 are idle, and the transmission channel of BPW3 is busy. At this time, the network device determines BWP1 and BWP2 as the first active BWP, and continues to listen to BWP3. When the transmission channel of the BWP 3 is detected to be idle, the BWP 3 is determined as a new active BWP and supplemented to the first active BWP.
  • BWP1 and BWP2 will end the MCOT first. If the network device still has data to transmit, it will continue to listen to BWP1 and BWP2. The MCOT of BWP3 will end at a later time, depending on the data transmission situation to decide whether to continue listening. Further, if the BWP3 is intercepted, and the BWP3 is busy for a long time, and the downlink information has been transmitted on the BWP1 and the BWP2, the BWP3 is discarded.
  • the maximum listening time of each BWP may be preset, and if the transmission channel of a certain BWP is continuously busy during the maximum listening time, the listening of the BWP is abandoned.
  • the step 12 further includes: if the channel listening result indicates that the number of BWPs in the first BWP that are idle is greater than or equal to the first preset number Ns, Then, the Ns BWPs are selected as the first active BWP in the BWP in which the transmission channel is idle; wherein Ns is a positive integer and is smaller than the total number of the first BWPs in the unlicensed frequency band; or, if the channel listening result indicates the first BWP If the number of BWPs in which the transmission channel is idle is less than the first preset number Ns, the entire BWP of the transmission channel idle is determined as the first active BWP, and the transmission channels of other BWPs in the first BWP are continuously monitored, if the interception is performed. When the transmission channel to other BWPs is idle, the other BWPs are added to the first active BWP.
  • the terminal has multiple (such as Np) active BWPs in the Pcell/PScell, and there are Ns active BWPs in the Scell, that is, the unlicensed frequency band.
  • the number of BWPs (configured BWPs) on the Pcell/PScell is Cp
  • the number of BWPs configured on the Scell is Cs
  • the number of BWPs in the first BWP is Cs.
  • Ns BWPs are selected in the BWP with the idle channel. Determined to be the first active BWP. If the network device detects that the number of BWPs in which the transmission channel is idle in the first BWP is less than Ns, the network device determines all BWPs whose transmission channels are idle as the first active BWP. Further, the network device may continue to listen to the BWP that is listening to be busy. When the subsequent transmission channel of the BWP is idle, it is determined as a new active BWP and is added to the first active BWP. .
  • the step 11 may be implemented by: selecting, in the unlicensed frequency band, the transmission of the first preset number of Ns BWPs in the first BWP.
  • the channel is intercepted to obtain a channel listening result; wherein Ns is a positive integer and less than the total number of BWPs in the first BWP in the unlicensed band.
  • Step 12 includes: determining Ns BWPs as the first active BWP if the channel listening result indicates that the transmission channels of the Ns BWPs in the first BWP are idle; or, if the channel listening result indicates the Ns BWPs of the first BWP If the transmission channel of the partial BWP is idle, the entire BWP of the transmission channel idle is determined as the first active BWP, and the transmission channels of other BWPs in the other BWPs or Ns BWPs in the first BWP are continuously monitored. When the transmission channel of other BWPs is detected to be idle, the other BWPs are added to the first active BWP.
  • the terminal has multiple (such as Np) active BWPs in the Pcell/PScell, and there are Ns active BWPs in the Scell, that is, the unlicensed frequency band.
  • the number of BWPs (configured BWPs) on the Pcell/PScell is Cp
  • the number of BWPs configured on the Scell is Cs, that is, the number of BWPs in the first BWP is Cs.
  • the Ns BWPs are determined as the first active BWP. If it is detected that only the partial BWP (such as Ns') of the Ns BWPs are idle, the entire BWP of the transport channel idle is determined as the first active BWP, and the network device continues to be removed in the first BWP. Listening on other BWPs other than Ns' BWP, or listening on other BWPs other than Ns' BWPs in Ns BWPs, thereby additionally selecting Ns-Ns' BWPs with free transmission channels One activates the BWP.
  • the network device further includes: at the terminal.
  • the at least one BWP corresponding to the primary cell or the primary and secondary cells sends downlink control information DCI indicating the first active BWP to the terminal. That is, after determining the first activated BWP, the network device needs to notify the terminal of the information of the first activated BWP by using the DCI. That is, as shown in FIG.
  • the network device after determining the first active BWP, the network device sends a reservation signal on the BWP to occupy the channel, and in the next transmission time unit of the Pcell/PScell (such as a slot).
  • the DCI sends the activation instructions of these BWPs, wherein the DCI of the Pcell/PScell needs to add a new field to indicate the BWP activation/deactivation of the Scell.
  • the terminal activates the new BWP.
  • step 13 includes: transmitting information to the terminal on the first active BWP in the next available transmission time unit of the secondary cell with respect to the transmission timing of the DCI.
  • the transmission time unit includes: a slot slot or a mini-slot.
  • the network device After transmitting the DCI, the network device sends downlink information to the terminal on the first active BWP in the next available transmission time unit of the Scell. If the retuning time of the terminal is less than one slot, the network device can also use the mini-slot to start sending downlink information after the DCI is sent to the next mini-slot, that is, the network device can be the same as the DCI according to the terminal capability.
  • the mini-slot scheduling of the terminal begins in the slot.
  • the network device listens to the multiple configured BWPs on the unlicensed frequency band, and determines the BWP whose transmission channel is idle as the first active BWP, and The downlink information is sent to the terminal on the first active BWP. In this way, by listening to multiple BWPs, other BWPs can also be used for transmission when a BWP is busy, thereby improving resource utilization.
  • the network device 500 of the embodiment of the present disclosure can implement the interception of the transmission channel of the first bandwidth part BWP in the unlicensed frequency band in the foregoing embodiment, and obtain a channel listening result;
  • the BWP is at least one BWP configured by the network device for the terminal; if the channel listening result indicates that the BWP in the first BWP is idle, the at least one BWP selected in the BWP with the idle channel is determined as the first activated BWP;
  • the details of the information method are sent to the terminal, and the same effect is achieved.
  • the network device 500 specifically includes the following functional modules:
  • the first intercepting module 510 is configured to separately listen to a transmission channel of at least one BWP in the first bandwidth part BWP in the unlicensed frequency band to obtain a channel listening result, where the first BWP is a network device configured for the terminal At least one BWP;
  • the first processing module 520 is configured to: when the channel listening result indicates that the BWP exists in the first BWP, the at least one BWP is determined to be the first active BWP in the BWP in which the transmission channel is idle;
  • the first sending module 530 is configured to send information to the terminal on the first active BWP.
  • the first processing module 520 includes:
  • a first determining submodule configured to: when the active BWP used in the last transmission exists in the BWP in which the transmission channel is idle, determine to activate the BWP as the first active BWP;
  • a second determining submodule configured to: when there is no active BWP used in the previous transmission in the BWP in which the transmission channel is idle, select one BWP in the BWP in which the transmission channel is idle to determine the first active BWP.
  • the first listening module 510 includes:
  • a first intercepting submodule configured to separately listen to all BWPs in the first BWP in the unlicensed frequency band to obtain a channel listening result
  • a second intercepting sub-module configured to select, in an unlicensed frequency band, a first preset number of Ns BWP transmission channels in the first BWP to obtain a channel listening result, where the Ns is a positive integer, and Less than the total number of BWPs in the first BWP in the unlicensed band.
  • the first processing module 520 further includes:
  • a third determining submodule configured to determine, when the channel listening result indicates that the transmission channel of all the BWPs in the first BWP is idle, determining all BWPs in the first BWP as the first active BWP;
  • a fourth determining submodule configured to determine, if the channel listening result indicates that the transmission channel of the partial BWP in the first BWP is idle, determine all BWPs of the transmission channel idle as the first active BWP, and continue to the other in the first BWP The transmission channel of the BWP is intercepted, and if the transmission channel of other BWPs is detected to be idle, the other BWPs are added to the first activated BWP;
  • a fifth determining submodule configured to: when the channel listening result indicates that the number of BWPs in the first BWP that are idle is greater than or equal to the first preset number Ns, select Ns BWPs in the BWP in which the transmission channel is idle a first active BWP; wherein Ns is a positive integer and less than the total number of first BWPs in the unlicensed band;
  • a sixth determining submodule configured to determine, when the channel listening result indicates that the number of BWPs in which the transmission channel is idle in the first BWP is less than the first preset number Ns, determining all BWPs in which the transmission channel is idle as the first active BWP, And continuing to listen to the transmission channels of the other BWPs in the first BWP, and if the transmission channels of the other BWPs are detected to be idle, the other BWPs are added to the first active BWPs.
  • the first processing module 520 further includes: a seventh determining submodule, configured to determine, according to the channel listening result, that the Ns BWPs in the first BWP are idle, determining the Ns BWPs as the first active BWP;
  • An eighth determining submodule configured to determine, if the channel listening result indicates that the transmission channel of the partial BWP in the Ns BWPs of the first BWP is idle, determine all BWPs of the transmission channel idle as the first active BWP, and continue to the first The transmission channels of other BWPs in other BWPs or Ns BWPs in the BWP are intercepted, and if the transmission channels of other BWPs are detected to be idle, the other BWPs are added to the first active BWP.
  • the first listening module 510 further includes:
  • a third listening sub-module configured to separately listen to a transmission channel of the first BWP of the secondary cell in the unlicensed frequency band, to obtain a channel listening result, where the first BWP is configured by the network device as a secondary cell of the terminal A BWP.
  • the network device 500 further includes:
  • the second sending module is configured to send downlink control information DCI for indicating the first active BWP to the terminal on the at least one BWP corresponding to the primary cell or the primary and secondary cells of the terminal.
  • the first sending module 530 includes:
  • a first sending submodule configured to send information to the terminal on the first active BWP in a next available transmission time unit of the secondary cell with respect to the sending moment of the DCI; where the transmission time unit includes: a slot slot or Microslot mini-slot.
  • the network device listens to multiple configured BWPs on the unlicensed frequency band, and determines the BWP with the idle transmission channel as the first active BWP, and The first activated BWP sends downlink information to the terminal, so that by listening to multiple BWPs, other BWPs can also be transmitted when one BWP is busy, thereby improving resource utilization.
  • an embodiment of the present disclosure further provides a network device, including a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor executing the computer program
  • the steps in the information transmission method under the unlicensed frequency band as described above are implemented.
  • the disclosed embodiments also provide a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of the information transmission method in an unlicensed frequency band as described above.
  • the network device 600 includes an antenna 61, a radio frequency device 62, and a baseband device 63.
  • the antenna 61 is connected to the radio frequency device 62.
  • the radio frequency device 62 receives information via the antenna 61 and transmits the received information to the baseband device 63 for processing.
  • the baseband device 63 processes the information to be transmitted and transmits it to the radio frequency device 62.
  • the radio frequency device 62 processes the received information and transmits it via the antenna 61.
  • the above-described band processing device may be located in the baseband device 63, and the method performed by the network device in the above embodiment may be implemented in the baseband device 63, which includes the processor 64 and the memory 65.
  • the baseband device 63 may include, for example, at least one baseband board on which a plurality of chips are disposed, as shown in FIG. 6, one of which is, for example, a processor 64, connected to the memory 65 to call a program in the memory 65 to execute The network device operation shown in the above method embodiment.
  • the baseband device 63 can also include a network interface 66 for interacting with the radio frequency device 62, such as a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the processor here may be a processor or a collective name of multiple processing elements.
  • the processor may be a CPU, an ASIC, or one or more configured to implement the method performed by the above network device.
  • Integrated circuits such as one or more signal processor DSPs, or one or more field programmable gate array FPGAs.
  • the storage element can be a memory or a collective name for a plurality of storage elements.
  • Memory 65 can be either volatile memory or non-volatile memory, or can include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Link DRAM
  • DRRAM direct memory bus random access memory
  • the network device of the embodiment of the present disclosure further includes: a computer program stored on the memory 65 and operable on the processor 64, and the processor 64 calls a computer program in the memory 65 to execute the method executed by each module shown in FIG. .
  • the processor 64 calls the computer program in the memory 65 to perform the following steps: respectively, listening to the transmission channel of the at least one BWP in the first bandwidth portion BWP in the unlicensed frequency band to obtain a channel listening result;
  • the first BWP is at least one BWP configured by the network device for the terminal;
  • the channel listening result indicates that there is a BWP in which the transmission channel is idle in the first BWP, selecting at least one BWP in the BWP in which the transmission channel is idle is determined as the first active BWP;
  • the processor 64 calls the computer program in the memory 65 to perform the following steps: when there is an active BWP used in the last transmission in the BWP in which the transmission channel is idle, it is determined that the activation BWP is the first active BWP;
  • one BWP selected in the BWP in which the transmission channel is idle is determined as the first active BWP.
  • the processor 64 calls the computer program in the memory 65 to perform the following steps: respectively, listening to all BWPs in the first BWP in the unlicensed frequency band to obtain a channel listening result;
  • the processor 64 calls the computer program in the memory 65 to perform the following steps:
  • the channel listening result indicates that the transmission channel of all BWPs in the first BWP is idle, determining all BWPs in the first BWP as the first active BWP;
  • the channel listening result indicates that the transmission channel of the partial BWP in the first BWP is idle, determining all BWPs of the transmission channel idle as the first active BWP, and continuing to detect the transmission channels of other BWPs in the first BWP. Listening, if the transmission channel of the other BWP is detected to be idle, the other BWP is added to the first activated BWP;
  • the Ns BWPs are selected as the first active BWP in the BWP in which the transmission channel is idle; Ns is a positive integer and is less than the total number of first BWPs in the unlicensed band;
  • the channel listening result indicates that the number of BWPs in which the transmission channel is idle in the first BWP is less than the first preset number Ns, determining all BWPs of the transmission channel idle as the first active BWP, and continuing to the first BWP
  • the transmission channels of the other BWPs are intercepted, and if the transmission channels of the other BWPs are detected to be idle, the other BWPs are supplemented to the first active BWPs.
  • the processor 64 calls the computer program in the memory 65 to perform the following steps:
  • the channel listening result indicates that the transmission channels of the Ns BWPs in the first BWP are all idle, and the Ns BWPs are determined as the first active BWP;
  • the channel listening result indicates that the transmission channel of the partial BWP in the Ns BWPs of the first BWP is idle, determining all BWPs of the transmission channel idle as the first active BWP, and continuing to the other BWPs in the first BWP or The transmission channels of the other BWPs in the Ns BWPs are intercepted, and if the transmission channels of the other BWPs are detected to be idle, the other BWPs are added to the first active BWPs.
  • the processor 64 calls the computer program in the memory 65 to perform the following steps: respectively, listening to the transmission channel of the first BWP of the secondary cell in the unlicensed frequency band to obtain a channel listening result; wherein the first BWP is a network
  • the device is at least one BWP configured for the secondary cell of the terminal.
  • the processor 64 calls the computer program in the memory 65 to perform the following steps: transmitting, on the at least one BWP corresponding to the primary cell or the primary and secondary cells of the terminal, downlink control information DCI for indicating the first active BWP.
  • the processor 64 calls the computer program in the memory 65 to perform the following steps: sending information to the terminal on the first active BWP in the next available transmission time unit of the secondary cell relative to the transmission time of the DCI
  • the transmission time unit includes: a slot slot or a minislot mini-slot.
  • the network device may be a Global System of Mobile communication (GSM) or a Base Transceiver Station (BTS) in Code Division Multiple Access (CDMA), or may be a wideband code division multiple access.
  • GSM Global System of Mobile communication
  • BTS Base Transceiver Station
  • CDMA Code Division Multiple Access
  • a base station (NodeB, NB) in the (Wideband Code Division Multiple Access, WCDMA) may also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an access point, or in a future 5G network.
  • the base station or the like is not limited herein.
  • the network device in the embodiment of the present disclosure listens to multiple configured BWPs on an unlicensed frequency band, and performs transmission on a BWP whose channel is empty. For downlink transmission, the network device listens and determines the first active BWP, and sends downlink information to the terminal through the first active BWP. In this way, by listening to multiple BWPs, other BWPs can also be used for transmission when a BWP is busy, thereby improving resource utilization.
  • the above embodiment introduces the information transmission method of the unlicensed frequency band in different scenarios from the network device side.
  • the information transmission method and terminal of the terminal side unlicensed frequency band corresponding thereto are further introduced in the following with reference to the accompanying drawings.
  • an embodiment of the present disclosure further provides an information transmission method in an unlicensed frequency band, which is applied to a terminal, including:
  • Step 71 Receive downlink control information DCI sent by the network device to indicate the first active bandwidth part BWP on the at least one BWP corresponding to the primary cell or the primary and secondary cells of the terminal.
  • the network device After determining the first active BWP, the network device needs to inform the terminal of the information of the first activated BWP through the DCI, so that the terminal knows to activate or select those BWPs.
  • Step 72 Activate the first activated BWP according to the DCI.
  • the terminal After the terminal learns the first activated BWP, the terminal activates the BWPs.
  • Step 73 Receive information sent by the network device on the activated first active BWP in the next available transmission time unit of the secondary cell with respect to the transmission timing of the DCI.
  • the transmission time unit includes: a slot slot or a mini-slot.
  • the network device After transmitting the DCI, the network device sends downlink information to the terminal on the first active BWP in the next available transmission time unit of the Scell, and accordingly, the terminal can receive on the first activated BWP in the transmission time unit. Information sent to the network device.
  • the terminal 800 of the embodiment of the present disclosure can implement the first active bandwidth part BWP sent by the receiving network device on the at least one BWP corresponding to the primary cell or the primary and secondary cells of the terminal in the foregoing embodiment.
  • Downlink control information DCI activate the first active BWP according to the DCI; receive the information method sent by the network device on the activated first active BWP in the next available transmission time unit of the secondary cell relative to the transmission timing of the DCI
  • the terminal 800 specifically includes the following functional modules:
  • the first receiving module 810 is configured to receive downlink control information DCI sent by the network device to indicate the first active bandwidth part BWP on the at least one BWP corresponding to the primary cell or the primary and secondary cells of the terminal;
  • a first activation module 820 configured to activate the first activation BWP according to the DCI
  • the second receiving module 830 is configured to receive information sent by the network device on the activated first BWP in the next available transmission time unit of the secondary cell with respect to the sending time of the DCI, where the transmission time unit includes: Slot slot or minislot mini-slot.
  • the terminal of the embodiment of the present disclosure activates the corresponding BWP according to the DCI of the first active BWP sent by the network device, and receives the downlink information sent by the network device on the activated BWP, because the network device is in the first activation of the BWP.
  • the interception of multiple configured BWPs on the unlicensed frequency band ensures that when a BWP is busy, other BWPs can also be used for transmission, thereby improving resource utilization.
  • each module of the above network device and terminal is only a division of logical functions. In actual implementation, it may be integrated into one physical entity in whole or in part, or may be physically separated. And these modules can all be implemented by software in the form of processing component calls; or all of them can be implemented in hardware form; some modules can be realized by processing component calling software, and some modules are realized by hardware.
  • the first receiving module may be a separately set processing element, or may be integrated in one of the above-mentioned devices, or may be stored in the memory of the above device in the form of program code, by one of the above devices.
  • the processing component invokes and performs the functions of the first receiving module above.
  • the implementation of other modules is similar.
  • each step of the above method or each of the above modules may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as one or more Application Specific Integrated Circuits (ASICs), or one or more signal processors (digital) Signal processor, DSP), or one or more Field Programmable Gate Arrays (FPGAs).
  • ASICs Application Specific Integrated Circuits
  • DSP digital Signal processor
  • FPGAs Field Programmable Gate Arrays
  • the processing component can be a general purpose processor, such as a central processing unit (CPU) or other processor that can invoke program code.
  • these modules can be integrated and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • FIG. 9 is a schematic diagram of a hardware structure of a terminal that implements various embodiments of the present disclosure, including but not limited to: a radio frequency unit 91, a network module 92, and an audio output.
  • Unit 93, input unit 94, sensor 95, display unit 96, user input unit 97, interface unit 98, memory 99, processor 910, and power supply 911 are components.
  • the terminal structure shown in FIG. 9 does not constitute a limitation of the terminal, and the terminal may include more or less components than those illustrated, or some components may be combined, or different component arrangements.
  • the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, an in-vehicle terminal, a wearable device, and a pedometer.
  • the radio frequency unit 91 is configured to receive and transmit signals under the control of the processor 910.
  • the processor 910 is configured to call a computer program stored on the memory 99 to execute the method executed by each module shown in FIG.
  • the terminal of the embodiment of the present disclosure activates the corresponding BWP according to the DCI of the first active BWP sent by the network device, and receives the downlink information sent by the network device on the activated BWP, because the network device is not in the first time when the BWP is activated.
  • the detection of multiple configured BWPs on the licensed frequency band ensures that when a BWP is busy, other BWPs can also be used for transmission, thereby improving resource utilization.
  • the radio frequency unit 91 can be used for receiving and transmitting signals during transmission and reception of information or during a call, and specifically, after receiving downlink data from the base station, processing is performed by the processor 910; The data is sent to the base station.
  • radio frequency unit 91 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 unit 91 can also communicate with the network and other devices through a wireless communication system.
  • the terminal provides the user with wireless broadband Internet access through the network module 92, such as helping the user to send and receive emails, browse web pages, and access streaming media.
  • the audio output unit 93 can convert the audio data received by the radio frequency unit 91 or the network module 92 or stored in the memory 99 into an audio signal and output as sound. Moreover, the audio output unit 93 can also provide audio output (eg, call signal reception sound, message reception sound, etc.) associated with a particular function performed by the terminal 90.
  • the audio output unit 93 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 94 is for receiving an audio or video signal.
  • the input unit 94 may include a graphics processing unit (GPU) 941 and a microphone 942 that images an still picture or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode.
  • the data is processed.
  • the processed image frame can be displayed on the display unit 96.
  • the image frames processed by the graphics processor 941 may be stored in the memory 99 (or other storage medium) or transmitted via the radio unit 91 or the network module 92.
  • the microphone 942 can receive sound and can process such sound as audio data.
  • the processed audio data can be converted to a format output that can be transmitted to the mobile communication base station via the radio unit 91 in the case of a telephone call mode.
  • Terminal 90 also includes at least one type of sensor 95, such as a light sensor, motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 961 according to the brightness of the ambient light, and the proximity sensor can close the display panel 961 and/or when the terminal 90 moves to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity.
  • sensor 95 may also include fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared Sensors, etc., will not be described here.
  • the display unit 96 is for displaying information input by the user or information provided to the user.
  • the display unit 96 can include a display panel 961.
  • the display panel 961 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the user input unit 97 can be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the terminal.
  • the user input unit 97 includes a touch panel 971 and other input devices 972.
  • the touch panel 971 also referred to as a touch screen, can collect touch operations on or near the user (such as a user using a finger, a stylus, or the like on the touch panel 971 or near the touch panel 971. operating).
  • the touch panel 971 can include two parts of a touch detection device and a touch controller.
  • the touch detection device detects the touch orientation of the user, and detects a 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 the touch information into contact coordinates, and sends the touch information.
  • the processor 910 receives the commands from the processor 910 and executes them.
  • the touch panel 971 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the user input unit 97 may also include other input devices 972.
  • other input devices 972 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, and joysticks, and are not described herein again.
  • the touch panel 971 can be overlaid on the display panel 961.
  • the touch panel 971 detects a touch operation on or near the touch panel 971, it is transmitted to the processor 910 to determine the type of the touch event, and then the processor 910 according to the touch.
  • the type of event provides a corresponding visual output on display panel 961.
  • the touch panel 971 and the display panel 961 are used as two independent components to implement the input and output functions of the terminal in FIG. 9, in some embodiments, the touch panel 971 and the display panel 961 may be integrated.
  • the input and output functions of the terminal are implemented, and are not limited herein.
  • the interface unit 98 is an interface in which an external device is connected to the terminal 90.
  • the external device may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, and an audio input/output. (I/O) port, video I/O port, headphone port, and more.
  • the interface unit 98 can be configured to receive input from an external device (eg, data information, power, etc.) and transmit the received input to one or more components within the terminal 90 or can be used at the terminal 90 and external devices Transfer data between.
  • the memory 99 can be used to store software programs as well as various data.
  • the memory 99 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to Data created by the use of the mobile phone (such as audio data, phone book, etc.).
  • the memory 99 may include a high speed random access memory, and may also include a nonvolatile memory such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the processor 910 is a control center of the terminal, which connects various parts of the entire terminal by various interfaces and lines, and executes by executing or executing software programs and/or modules stored in the memory 99, and calling data stored in the memory 99.
  • the terminal 's various functions and processing data, so as to monitor the terminal as a whole.
  • the processor 910 may include one or more processing units; optionally, the processor 910 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, etc., and a modulation solution
  • the processor mainly handles wireless communication. It can be understood that the above modem processor may not be integrated into the processor 910.
  • the terminal 90 can also include a power supply 911 (such as a battery) for powering various components.
  • a power supply 911 (such as a battery) for powering various components.
  • the power supply 911 can be logically coupled to the processor 910 through a power management system to manage charging, discharging, and power management through the power management system. And other functions.
  • terminal 90 includes some functional modules not shown, and details are not described herein again.
  • an embodiment of the present disclosure further provides a terminal, including a processor 910, a memory 99, a computer program stored on the memory 99 and executable on the processor 910, where the computer program is executed by the processor 910
  • the terminal may be a wireless terminal or a wired terminal, and the wireless terminal 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 device connected to the wireless modem. .
  • the wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • RAN can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • a mobile terminal such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistants
  • PDA Personal Digital Assistant
  • the wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, and a remote terminal.
  • the access terminal, the user terminal (User Terminal), the user agent (User Agent), and the user device (User Device or User Equipment) are not limited herein.
  • the embodiment of the present disclosure further provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, implements various processes of the information transmission method embodiment in the unlicensed frequency band, and Can achieve the same technical effect, in order to avoid duplication, no longer repeat here.
  • the computer readable storage medium such as a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • 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, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, a portion of the technical solution of the present disclosure that contributes in essence or to the related art or a part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
  • the objects of the present disclosure can also be achieved by running a program or a set of programs on any computing device.
  • the computing device can be a well-known general purpose device.
  • the objects of the present disclosure may also be realized by merely providing a program product including program code for implementing the method or apparatus. That is to say, such a program product also constitutes the present disclosure, and a storage medium storing such a program product also constitutes the present disclosure.
  • the storage medium may be any known storage medium or any storage medium developed in the future.
  • various components or steps may be decomposed and/or recombined.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de transmission d'informations dans une bande sans licence, ainsi qu'un dispositif de réseau et un terminal. Le procédé comporte les étapes consistant à: intercepter respectivement un canal de transmission d'au moins une partie de bande passante (BWP) parmi des premières BWP dans une bande sans licence pour obtenir un résultat d'interception de canal, les premières BWP étant la ou les BWP configurées pour un terminal par un dispositif de réseau; si le résultat d'interception de canal indique qu'il existe des BWP dotées d'un canal de transmission au repos parmi les premières BWP, sélectionner au moins une BWP parmi les BWP dotées d'un canal de transmission au repos et déterminer celle-ci comme étant une première BWP activée; et envoyer, sur la première BWP activée, des informations au terminal.
PCT/CN2018/104954 2017-10-20 2018-09-11 Procédé de transmission d'informations dans une bande sans licence, et dispositif de réseau et terminal Ceased WO2019076170A1 (fr)

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CN111758297A (zh) * 2020-05-12 2020-10-09 北京小米移动软件有限公司 信道检测方法及装置、通信设备及存储介质
CN111758297B (zh) * 2020-05-12 2023-08-29 北京小米移动软件有限公司 信道检测方法及装置、通信设备及存储介质
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