WO2017166309A1 - Procédé et dispositif de traduction et de réception de signal - Google Patents

Procédé et dispositif de traduction et de réception de signal Download PDF

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Publication number
WO2017166309A1
WO2017166309A1 PCT/CN2016/078365 CN2016078365W WO2017166309A1 WO 2017166309 A1 WO2017166309 A1 WO 2017166309A1 CN 2016078365 W CN2016078365 W CN 2016078365W WO 2017166309 A1 WO2017166309 A1 WO 2017166309A1
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WIPO (PCT)
Prior art keywords
energy detection
detection threshold
information
threshold offset
offset information
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PCT/CN2016/078365
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English (en)
Chinese (zh)
Inventor
杨美英
官磊
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2016/078365 priority Critical patent/WO2017166309A1/fr
Priority to CN201680084328.3A priority patent/CN108886696A/zh
Publication of WO2017166309A1 publication Critical patent/WO2017166309A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting a signal and receiving a signal.
  • the LAB Licensed Assisted Access
  • LTE Long Terms Evolution
  • LBT Listen Before Talk
  • the principle of the LBT mechanism is that the UE (User Equipment) performs the channel idle evaluation before sending the signal to the base station. If the channel is estimated to be idle, the UE can occupy the channel and pass the channel. The base station transmits a signal.
  • the UE performs the channel idle evaluation in the following manner.
  • the detailed procedure is as follows: The UE obtains its own transmission parameter information, where the transmission parameter information includes the transmission bandwidth and the transmission power of the UE, and determines the energy detection threshold according to the transmission parameter information. Then, the energy of the channel is detected. If the energy of the channel does not exceed the energy detection threshold, it is determined that the channel is idle, the channel can be occupied, and information is transmitted to the base station through the channel.
  • the energy detection threshold determined when the transmission power of the UE is reduced may increase, and increasing the energy detection threshold may increase the chance of detecting the channel being idle. In turn, the opportunity for the UE to occupy a channel to transmit a signal is increased. In this way, the central UE located in the central area of the cell increases the determined energy detection threshold by reducing the transmission power, thereby increasing the chance of transmitting signals.
  • the increase of the energy detection threshold is much smaller than that of the central UE to reduce the transmission power.
  • the increase of the energy detection threshold is often less than 10 dB. Therefore, at present, the central UE obtains a small opportunity to transmit information at the cost of lower transmission power, and the chance of the center UE transmitting the signal is still low.
  • the embodiment of the invention provides a method and a device for transmitting a signal and receiving a signal.
  • the technical solution is as follows:
  • a method of transmitting a signal comprising:
  • the user equipment UE acquires energy detection threshold offset information, where the energy detection offset information is used to increase an energy detection threshold of the UE;
  • the UE transmits a signal after the evaluation channel is idle.
  • the UE since the energy detection threshold offset information is used to increase the energy detection threshold of the UE, the UE may increase the determined energy detection threshold by using the energy detection threshold offset information, thereby improving the threshold according to the energy detection.
  • the UE detects the chance of the channel being idle, thereby increasing the chance of the UE transmitting a signal.
  • the sending parameter information includes the UE Transmitting power
  • Determining, by the UE, the current energy detection threshold according to the sending parameter information and the energy detection offset information including:
  • the current energy detection threshold is determined according to the following formula:
  • T is the current energy detection threshold
  • the value range is a real number set
  • B is a constant, the value range is a real number set
  • BW is the transmission bandwidth of the UE, and the value range is a positive number
  • P H is a constant, The value range is a real number set
  • P TX is the transmit power of the UE, and the value range is a real number set
  • T A is a constant, the value range is a real number set
  • Y is the energy detection threshold offset value
  • the value is The range is a real number set
  • T max 10 ⁇ log10(F ⁇ BW), the value range is a real number set
  • E is a constant, the value range is a positive number
  • F is the power per megahertz, and the value range is non-negative Real number.
  • the energy detection threshold offset information used to improve the UE energy detection threshold is brought into the foregoing formula, so that the energy detection threshold offset information is used.
  • the energy detection threshold determined by the UE may be increased, so that the opportunity for the UE to detect the channel idle is improved according to the energy detection threshold, thereby improving the chance of the UE transmitting the signal.
  • the user equipment UE acquiring the energy detection threshold offset information includes:
  • the UE receives energy detection threshold offset information, where the energy detection offset information is configured by the base station for the UE; or
  • the UE acquires the energy detection threshold offset information according to current wireless parameter information.
  • the energy detection threshold offset information of the UE may be configured by the base station or may be acquired by the UE itself, and provides multiple manners for acquiring energy detection offset information.
  • the obtaining, by the current wireless parameter information, the energy detection threshold offset information includes:
  • the method further includes:
  • the UE receives a correspondence between the candidate radio parameter information and candidate energy detection offset information.
  • a method of receiving a signal comprising:
  • the base station sends the energy detection threshold offset information, where the energy detection threshold offset information is used to increase the energy detection threshold energy detection threshold offset of the user equipment;
  • the base station receives a signal sent by the UE.
  • the base station sends the energy detection threshold offset information for improving the energy detection threshold of the UE, so that the UE provides the energy detection threshold determined by the UE through the energy detection threshold offset information, and the energy detection threshold is provided by the energy detection threshold.
  • the opportunity to send a signal is not limited to whether the energy detection threshold is available.
  • the method before the sending, by the base station, the energy detection threshold offset information, the method further includes:
  • the base station configures the energy detection threshold offset information.
  • the base station configures the energy threshold offset information, so that the UE increases the chance of sending the signal based on the energy detection threshold offset information.
  • the method further includes:
  • the base station sends a correspondence between the candidate radio parameter information and the candidate energy detection threshold offset information.
  • the base station sends the correspondence between the candidate radio parameter information and the candidate energy detection threshold offset information, so that the UE can obtain the energy detection threshold offset information from the correspondence.
  • an apparatus for transmitting a signal comprising: a processing unit and a transmitting unit;
  • the processing unit is configured to acquire energy detection threshold offset information, where the energy detection offset information is used to increase an energy detection threshold of the UE; and determine current according to the sending parameter information and the energy detection offset information An energy detection threshold; performing channel idle evaluation according to the current energy detection threshold;
  • the sending unit is configured to send a signal after the processing unit evaluates that the channel is idle.
  • the UE since the energy detection threshold offset information is used to increase the energy detection threshold of the UE, the UE may increase the determined energy detection threshold by using the energy detection threshold offset information, thereby improving the threshold according to the energy detection.
  • the UE detects the chance of the channel being idle, thereby increasing the chance of the UE transmitting a signal.
  • the sending parameter information includes the UE Transmitting power
  • the processing unit is configured to determine the current energy detection threshold according to the following formula:
  • T is the current energy detection threshold
  • the value range is a real number set
  • B is a constant, the value range is a real number set
  • BW is the transmission bandwidth of the UE, and the value range is a positive number
  • P H is a constant, The value range is a real number set
  • P TX is the transmit power of the UE, and the value range is a real number set
  • T A is a constant, the value range is a real number set
  • Y is the energy detection threshold offset value
  • the value is The range is a real number set
  • T max 10 ⁇ log10(F ⁇ BW), the value range is a real number set
  • E is a constant, the value range is a positive number
  • F is the power per megahertz, and the value range is non-negative Real number.
  • the energy detection threshold offset information used to improve the UE energy detection threshold is brought into the foregoing formula, so that the UE determines the threshold determined by the energy detection threshold offset information.
  • the energy detection threshold thereby increasing the chance of the UE detecting the channel being idle according to the energy detection threshold, thereby improving the chance of the UE transmitting the signal.
  • the device further includes: a receiving unit;
  • the receiving unit is configured to receive energy detection threshold offset information, where the energy detection offset information is configured by the base station for the UE; or
  • the processing unit is configured to acquire the energy detection threshold offset information according to current wireless parameter information.
  • the energy detection threshold offset information of the UE may be configured by the base station, or may be acquired by the UE itself, and provides multiple manners for acquiring energy detection offset information.
  • the processing unit is configured to use candidate wireless parameter information and candidate energy according to the current wireless parameter information Obtaining the energy detection offset information corresponding to the current wireless parameter information in the correspondence between the detected offset information.
  • the receiving unit is further configured to receive the candidate wireless parameter information and candidate energy detection offset information Correspondence.
  • a fourth aspect provides an apparatus for receiving a signal, the apparatus comprising: a transmitting unit and a receiving unit;
  • the sending unit is configured to send energy detection threshold offset information, where the energy detection threshold offset information is used to increase an energy detection threshold energy detection threshold offset of the user equipment;
  • the receiving unit is configured to receive a signal sent by the UE.
  • the energy detection threshold offset information for improving the energy detection threshold of the UE is sent, so that the UE provides the energy detection threshold determined by the UE through the energy detection threshold offset information, and provides a transmission signal by using the energy detection threshold. chance.
  • the device further includes: a processing unit;
  • the processing unit is configured to configure the energy detection threshold offset information.
  • the base station configures the energy threshold offset information, so that the UE increases the chance of sending the signal based on the energy detection threshold offset information.
  • the sending unit is further configured to send the candidate radio parameter information and the candidate energy detection threshold The correspondence of the shift information.
  • the correspondence between the candidate candidate wireless parameter information and the candidate energy detection threshold offset information is sent, so that the UE can obtain the energy detection threshold offset information from the correspondence.
  • 1-1 is a schematic diagram of a network architecture according to an embodiment of the present invention.
  • 1-2 is a schematic diagram of a network architecture of a first application scenario provided by an embodiment of the present invention
  • FIG. 1-3 are schematic diagrams of network architectures of a second application scenario provided by an embodiment of the present invention.
  • FIG. 1-4 are schematic diagrams of network architectures of a third application scenario provided by an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a UE according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • 4-1 is a flowchart of a method for transmitting a signal according to an embodiment of the present invention.
  • 4-2 is a schematic diagram of a plurality of energy detection threshold offset values configured by a base station for a UE according to an embodiment of the present disclosure
  • FIG. 5 is a flowchart of a method for receiving a signal according to an embodiment of the present invention.
  • 6-1 is a schematic structural diagram of an apparatus for transmitting a signal according to an embodiment of the present invention.
  • 6-2 is a schematic structural diagram of another apparatus for transmitting a signal according to an embodiment of the present invention.
  • 7-1 is a schematic structural diagram of an apparatus for receiving a signal according to an embodiment of the present invention.
  • FIG. 7-2 is a schematic structural diagram of another apparatus for receiving a signal according to an embodiment of the present invention.
  • the UE for uplink transmission, performs channel idle evaluation before transmitting a signal to the base station, and if the channel is estimated to be idle, the channel can be occupied and passed.
  • the channel transmits a signal to the base station.
  • the base station includes a macro station and a small station.
  • the working frequency band of the small station includes multiple, one of which is the unlicensed spectrum, and the other is the licensed spectrum; or one of the working bands is the unlicensed spectrum, and the small station passes the ideal/non-ideal backhaul link and the macro station Connected, while the macro station works in the licensed spectrum.
  • the LAA communication system specifically includes the following three application scenarios.
  • the first application scenario is as follows: Referring to Figure 1-2, the macro station and the small station work on the licensed spectrum f1 and the unlicensed spectrum f2 respectively by carrier aggregation. Among them, the macro station and the small station are connected by an ideal backhaul link.
  • the second application scenario is as follows: Referring to FIG. 1-3, the macro station operates in the authorized spectrum f1, and the small station works on the licensed spectrum f1 and the unlicensed spectrum f2 by carrier aggregation.
  • the licensed spectrum and the unlicensed spectrum of the small station are connected by an ideal backhaul link.
  • the macro station and the small station are connected by an ideal or non-ideal backhaul link.
  • the third application scenario is as follows: the small station works on the licensed spectrum f2 and the unlicensed spectrum f3 through carrier aggregation.
  • the licensed spectrum and the unlicensed spectrum of the small station are connected by an ideal backhaul link.
  • the central UE located in the central area of the cell estimates that the channel is idle, and the chance of transmitting the signal is small, and the present invention improves the central UE by any of the following embodiments.
  • the opportunity to send a signal is a signal.
  • the structure of the UE may be the UE 200 as shown in FIG. 2, and the UE 200 may be a mobile phone or a tablet computer, etc., and at least includes a transceiver 201, and a processor 202 including one or more processing cores. .
  • the processor 202 can perform a channel idle evaluation prior to transmitting a signal to the base station, and if the channel is estimated to be idle, the channel can be occupied.
  • the transceiver 201 can be configured to transmit a signal to the base station after the processor 202 occupies the channel.
  • the UE 200 may include other components in addition to the above two components, and the processor 202 and the transceiver 201 may have other functions in addition to the functions described above.
  • the UE 200 may further include components such as a memory 203, an input unit 204, a display unit 205, a sensor 206, an audio circuit 207, and a WiFi (Wireless Fidelity) module 208, and the memory 203 includes one or more computer readable storages. medium.
  • a memory 203 includes one or more computer readable storages. medium.
  • the transceiver 201 can also be used for receiving and transmitting signals during receiving or transmitting information or during a call, in particular, receiving downlink information of the base station and then processing it by one or more processors 202; The data is sent to the base station.
  • the transceiver 201 includes, but is not limited to, an antenna, at least one amplifier, a tuner, one or more oscillators, a SIM (Subscriber Identity Module) card, a transceiver, a coupler, and an LNA (Low Noise Amplifier, Low noise amplifier), duplexer, etc.
  • the transceiver 201 can also communicate with the network and other devices via wireless communication.
  • the wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA (Code Division Multiple Access). , Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), LTE (Long Term Evolution), e-mail, SMS (Short Messaging Service), and the like.
  • GSM Global System of Mobile communication
  • GPRS General Packet Radio Service
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • e-mail Short Messaging Service
  • the memory 203 can also be used to store software programs and modules, and the processor 202 can execute various functional applications and data processing by running software programs and modules stored in the memory 203.
  • the memory 203 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 The data created by the use of the UE 200 (such as audio data, phone book, etc.) and the like.
  • the memory 203 may include a high speed random access memory, and may also include a non- Volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, memory 203 may also include a memory controller to provide access to memory 203 by processor 202 and input unit 204.
  • Input unit 204 can be used to receive input numeric or character information, as well as to generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function controls.
  • input unit 204 can include touch-sensitive surface 241 as well as other input devices 242.
  • a touch-sensitive surface 241, also referred to as a touch display or trackpad, can collect touch operations on or near the user (eg, the user uses a finger, stylus, etc., on any suitable object or accessory on the touch-sensitive surface 241 or The operation near the touch-sensitive surface 241) and driving the corresponding connecting device according to a preset program.
  • the touch-sensitive surface 241 can include two portions 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 202 is provided and can receive commands from the processor 202 and execute them.
  • the touch sensitive surface 241 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the input unit 204 can also include other input devices 242.
  • other input devices 242 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.
  • Display unit 205 can be used to display information entered by the user or information provided to the user and various graphical user interfaces of UE 200, which can be composed of graphics, text, icons, video, and any combination thereof.
  • the display unit 205 can include a display panel 251.
  • the display panel 251 can be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like.
  • the touch-sensitive surface 241 can cover the display panel 251, and when the touch-sensitive surface 241 detects a touch operation thereon or nearby, it is transmitted to the processor 202 to determine the type of the touch event, and then the processor 202 according to the touch event The type provides a corresponding visual output on display panel 251.
  • touch-sensitive surface 241 and display panel 251 are implemented as two separate components to implement input and input functions, in some embodiments, touch-sensitive surface 241 can be integrated with display panel 251 for input. And output function.
  • the UE 200 includes at least one type of sensor 206, such as a light sensor, motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 251 according to the brightness of the ambient light, and the proximity sensor may close the display panel 251 and/or when the UE 200 moves to the ear. Or backlight.
  • the gravity acceleration sensor can detect the acceleration of each direction (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the posture of the UE (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration).
  • Vibration-related functions such as pedometer, tapping), etc.; other sensors such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that can be configured by the UE 200 are not described here.
  • the audio circuit 207 includes a speaker 271 and a microphone 272 that provides an audio interface between the user and the UE 200.
  • the audio circuit 207 can transmit the converted electrical data of the received audio data to the speaker 271 for conversion to the sound signal output by the speaker 271; on the other hand, the microphone 272 converts the collected sound signal into an electrical signal by the audio circuit 207. After receiving, it is converted into audio data, and then processed by the audio data output processor 202, transmitted to the UE, for example, by the transceiver 201, or outputted to the memory 203 for further processing.
  • the audio circuit 207 may also include an earbud jack to provide communication of the peripheral earphones with the UE 200.
  • WiFi is a short-range wireless transmission technology
  • the UE 200 can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 208, which provides wireless broadband Internet access for users.
  • FIG. 2 shows the WiFi module 208, it can be understood that it does not belong to the essential configuration of the UE 200, and may be omitted as needed within the scope of not changing the essence of the invention.
  • the processor 202 is the control center of the UE 200, and connects various parts of the entire UE using various interfaces and lines, by executing or executing software programs and/or modules stored in the memory 203, and calling data stored in the memory 203, executing The UE 200 performs various functions and processes data, thereby performing overall monitoring of the UE 200.
  • the processor 202 can integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, an application, and the like, and the modem processor mainly processes the wireless communication. It can be understood that the above modem processor may not be integrated into the processor 202.
  • the UE 200 also includes a power source 209 (such as a battery) that supplies power to various components.
  • a power source 209 can be logically coupled to the processor 202 through a power management system to manage functions such as charging, discharging, and power management through the power management system.
  • Power supply 209 may also include any one or more of a DC or AC power source, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.
  • the UE 200 may further include a camera, a Bluetooth module, and the like, and details are not described herein again.
  • the transceiver 201 and the processor 202 of the UE 200 may also have the following functions:
  • the processor 202 is configured to acquire energy detection threshold offset information, where the energy detection offset information is used to increase an energy detection threshold of the UE 200; and determine, according to the sending parameter information and the energy detection offset information a current energy detection threshold; performing channel idle evaluation according to the current energy detection threshold;
  • the transceiver 201 is configured to send a signal after the evaluation channel is idle.
  • the sending parameter information includes a transmit power of the UE 200;
  • the processor 202 is configured to determine the current energy detection threshold T according to the following formula:
  • T is the current energy detection threshold
  • the value range is a real number set
  • B is a constant, the value range is a real number set
  • BW is the transmission bandwidth of the UE 200, and the value range is a positive number
  • P H is a constant, The value range is a real number set
  • P TX is the transmit power of the UE, and the value range is a real number set
  • T A is a constant, the value range is a real number set
  • Y is the energy detection threshold offset value
  • the value is The range is a real number set
  • T max 10 ⁇ log10(F ⁇ BW), the value range is a real number set
  • E is a constant, the value range is a positive number
  • F is the power per megahertz, and the value range is non-negative Real number.
  • the energy detection threshold offset information includes an index of an energy detection threshold offset value
  • the processor 202 is further configured to acquire the energy detection threshold offset value according to an index of the energy detection threshold offset value.
  • the sending bandwidth of the UE 200 is any one of an actual sending bandwidth, a maximum sending bandwidth, and a channel detecting bandwidth of the UE on a carrier of an unlicensed spectrum;
  • the transmit power includes an actual transmit power of the UE 200 on a carrier of the unlicensed spectrum or a maximum transmit power of the UE 200 on a carrier of the unlicensed spectrum.
  • the processor 202 is configured to receive energy detection threshold offset information, where the energy detection offset information is configured by the base station for the UE 200, or obtain the energy detection according to current wireless parameter information. Threshold offset information.
  • the processor 202 is configured to acquire, according to the current wireless parameter information, the energy detection offset information corresponding to the current wireless parameter information from a correspondence between candidate wireless parameter information and candidate energy detection offset information. .
  • the transceiver 201 is further configured to receive a correspondence between the candidate wireless parameter information and the candidate energy detection offset information.
  • the current radio parameter information includes propagation path loss information of the UE to the base station, propagation path loss information of the base station to the UE, reference signal received power RSRP of the UE, and the UE At least one of a reference signal reception quality RSRQ, a received signal strength indication RSSI of the UE, a signal to interference and noise ratio SINR of the UE, and a transmission power of the UE.
  • the received energy detection threshold offset information includes at least one energy detection threshold offset value.
  • the energy detection threshold offset information for improving the energy detection threshold of the UE is brought into the above formula, so that the energy detection threshold determined by the UE can be improved by the energy detection threshold offset information, thereby The energy detection threshold increases the chance that the UE detects the channel being idle, thereby increasing the chance of the UE transmitting a signal.
  • FIG. 3 is a schematic structural diagram of a base station 300 according to an embodiment of the present invention.
  • the base station 300 may be the base station mentioned in the foregoing embodiment shown in FIG. 1-1 to 1-4, and the base station 300 may be different in configuration or performance.
  • the resulting large difference may include one or more transmitters 301, processors 302, and may also include a receiver 303, one or more storage media 306 that store applications 304 or data 305 (eg, one or one in Shanghai) Storage device).
  • the storage medium 306 can be short-lived or persistent.
  • the program stored on storage medium 306 may include one or more modules (not shown), each of which may include a series of instruction operations.
  • the processor 302 can be configured to communicate with the storage medium 306 to perform a series of instruction operations in the storage medium 306 on the base station 300.
  • Base station 300 can also include one or more power sources 307, one or more wired or wireless network interfaces 308, one or more input and output interfaces 309, and/or one or more operating systems 310, such as Windows ServerTM, Mac OS. XTM, UnixTM, LinuxTM, FreeBSDTM, etc., and the operating system 310 can be stored in the storage medium 306.
  • operating systems 310 such as Windows ServerTM, Mac OS. XTM, UnixTM, LinuxTM, FreeBSDTM, etc., and the operating system 310 can be stored in the storage medium 306.
  • the transmitter 301, the processor 302, and the receiver 303 of the base station 300 have the following functions:
  • the transmitter 301 is configured to send energy detection threshold offset information, where the energy detection threshold offset information is used to increase an energy detection threshold energy detection threshold offset of the user equipment UE;
  • the receiver 303 is configured to receive a signal sent by the UE.
  • the processor 302 is configured to configure the energy detection threshold offset information.
  • the transmitter 301 is further configured to send a correspondence between candidate wireless parameter information and candidate energy detection threshold offset information.
  • the candidate radio parameter information includes propagation path loss information of the UE to the base station, propagation path loss information of the base station to the UE, reference signal received power RSRP of the UE, and the UE
  • the reference signal reception quality RSRQ, the received signal strength indication RSSI of the UE, and the signal to interference and noise ratio SINR of the UE are at least one of.
  • the energy detection threshold offset information includes an index of at least one energy detection threshold offset value or at least one energy detection threshold offset value.
  • the energy detection threshold offset information is used to improve the energy detection threshold of the UE, thereby improving the chance of the UE transmitting the signal.
  • an embodiment of the present invention provides a method for sending a signal, including:
  • Step 401 The UE acquires energy detection threshold offset information, where the energy detection threshold offset information is used to improve an energy detection threshold of the UE.
  • the value range of the energy detection threshold offset information is a real number set.
  • the energy detection threshold offset information is used to increase the energy detection threshold of the UE.
  • the UE acquires energy detection threshold offset information before transmitting the signal, and the energy detection threshold offset information includes an index of at least one energy detection threshold offset value or at least one energy detection threshold offset value.
  • the UE can obtain the energy detection threshold offset information by using the following methods, including:
  • the UE acquires its wireless parameter information, and configures the energy detection threshold offset information according to the wireless parameter information.
  • the radio parameter information includes the propagation path loss information of the UE to the base station, the transmission path loss information of the base station to the UE, the RSRP (Reference Signal Receiving Power) of the UE, the RSRQ (Reference Signaling Quality of the reference signal), and the UE. At least one of RSSI (Received Signal Strength Indication), SINR (Signal to Interference plus Noise Ratio) of the UE, and transmission power of the UE.
  • the transmit power of the UE includes the UE on the carrier of the unlicensed spectrum. Maximum transmit power, or the actual transmit power of the UE on the carrier of the unlicensed spectrum.
  • the transmit power of the UE is also called the output power of the UE. In this embodiment, the transmit power of the UE is used.
  • the detailed implementation process may be: the UE obtains its wireless parameter information, determines its transmit power according to the wireless parameter information, and sets at least one energy detection gate offset value according to the transmit power size, that is, obtains energy detection. Threshold offset information.
  • the smaller the transmission power the larger the set value of the energy detection threshold offset.
  • the larger the transmission power the smaller the set value of the energy detection threshold offset. If the transmit power is large enough, the set energy detection threshold offset value may be zero.
  • the energy detection threshold offset value set according to the transmission power X1 is Y1
  • the energy detection threshold offset value set according to the transmission power X2 is Y2, and Y2 is greater than Y1.
  • the UE obtains the current wireless parameter information, and obtains the energy detection corresponding to the current wireless parameter information from the correspondence between the candidate wireless parameter information and the candidate energy detection threshold offset information according to the current wireless parameter information. Threshold offset information.
  • the correspondence between the candidate radio parameter information and the candidate energy detection threshold offset information is sent by the UE receiving the base station, and the UE can save the correspondence after receiving the corresponding relationship, and the second method is used to obtain the energy detection threshold. Used when offset information.
  • the manner in which the base station sends the corresponding relationship to the UE includes a static mode, a semi-static mode, or a dynamic configuration mode.
  • the base station sends RRC (Radio Resource Control) signaling to the UE, and the RRC signaling carries the correspondence.
  • RRC Radio Resource Control
  • the base station sends RRC signaling to the UE. For example, when the UE accesses the network, the base station sends RRC signaling to the UE. For example, when the UE performs cell handover, the base station sends RRC signaling to the UE. When the base station is in the static mode, the base station may carry the correspondence in the RRC signaling before sending the RRC signaling to the UE, and then send the correspondence to the UE along with the RRC signaling.
  • the base station may periodically send the correspondence to the UE.
  • the base station may periodically send broadcast signaling to the UE, where the broadcast signaling carries the correspondence.
  • broadcast signaling may be used to achieve, there are other ways to achieve, not listed here.
  • the base station sends the correspondence to the UE when scheduling the UE.
  • the base station sends a scheduling instruction to the UE when scheduling the UE. Therefore, the specific relationship may be carried in the scheduling instruction.
  • scheduling signaling there are other ways to implement, which are not enumerated here.
  • the mapping relationship between the candidate wireless parameter information and the candidate energy detection threshold offset information includes one of a one-to-one mapping, a one-to-many mapping, and a many-to-one mapping.
  • the so-called one-to-one mapping means that the candidate wireless parameter information only corresponds to one candidate energy detection threshold offset information, and the candidate energy detection threshold offset information only corresponds to the candidate wireless parameter information. See Table 2 below.
  • the so-called one-to-many mapping refers to a candidate wireless parameter information corresponding to multiple candidate energy detection threshold offset information; see Table 3 below, the so-called multi-to-one mapping refers to multiple candidate wireless parameters.
  • the information corresponds to an energy detection threshold offset information.
  • the UE obtains the energy detection threshold offset information corresponding to the current wireless parameter information from the corresponding relationship after receiving the corresponding relationship and before transmitting the signal according to the current wireless parameter information. For example, if the current radio parameter information acquired by the UE is X1, the candidate energy is obtained from the correspondence between the candidate radio parameter information and the candidate energy detection threshold offset information as shown in Table 2 according to the current radio parameter information X1.
  • the detection threshold offset information is a range of Y1 to Y2, and at least one energy detection threshold offset information is selected from the range of Y1 to Y2 as the energy detection threshold offset information corresponding to the current wireless parameter information X1, assuming that the selection is made Y1 and Y2, correspondingly, the energy detection threshold offset information includes energy detection threshold values Y1 and Y2.
  • the UE receives the energy detection threshold offset information sent by the base station.
  • the energy detection threshold offset information is configured by the base station.
  • the energy detection threshold offset information may include at least one energy detection threshold offset value or an index including at least one energy detection threshold offset value.
  • the energy detection threshold offset information configured by the base station may be carried on the authorized carrier and/or the unlicensed carrier, and then sent to the UE.
  • the base station configures the energy detection offset information in the following manners, including:
  • the base station acquires wireless parameter information of the UE, and acquires energy detection threshold offset information according to the wireless parameter information.
  • the UE may periodically transmit its wireless parameter information to the base station.
  • the base station may obtain the wireless parameter information sent by the nearest UE, determine the transmit power of the UE according to the wireless parameter information, and set at least one energy detection threshold offset value according to the transmit power of the UE, that is, obtain the energy detection threshold offset information.
  • the base station randomly sets at least one energy detection threshold offset value to obtain energy detection threshold offset information.
  • the base station acquires energy detection threshold offset information according to the statistical history of the UE information.
  • the historical UE information of the base station statistics includes the success rate of the UE preempting the channel, and the UE detects the number of times the channel is idle or detects the proportion of the channel being idle.
  • the base station may set at least one energy detection threshold offset value according to the success rate of the UE preempting the channel, and obtain the energy detection threshold offset information.
  • the set energy detection threshold offset value may be zero.
  • the base station sets at least one energy detection threshold offset according to the number of times the UE detects the channel idle or detects the channel idle ratio. The value is obtained as the energy detection threshold offset information.
  • the set value of the energy detection threshold offset is larger.
  • the set value of the energy detection threshold offset is smaller. If the UE detects the number of times the channel is idle or the ratio of the channel idle is detected to be sufficiently large, the set energy detection threshold offset value may be zero.
  • the manner in which the base station sends the configured energy detection offset information to the UE also includes a static mode, a semi-static mode, or a dynamic configuration mode.
  • the base station sends RRC signaling to the UE, and the RRC signaling carries energy detection offset threshold offset information.
  • the base station can periodically transmit energy detection threshold offset information to the UE.
  • the base station may periodically send broadcast signaling to the UE, where the broadcast signaling carries the energy detection threshold offset information.
  • broadcast signaling carries the energy detection threshold offset information.
  • the base station sends energy detection threshold offset information to the UE when scheduling the UE.
  • the base station sends a scheduling instruction to the UE when scheduling the UE. Therefore, in the specific implementation, the energy detection threshold offset information may be carried in the scheduling instruction.
  • scheduling signaling there are other ways to implement, which are not enumerated here.
  • the energy detection threshold offset information may include an energy detection threshold offset value configured by the base station to a UE, or may be multiple energy detection threshold offset values configured by the base station to multiple UEs. If the base station only needs to schedule one UE and the UE needs to configure an energy detection threshold offset, or schedule multiple UEs, and only one of the multiple UEs needs to configure an energy detection threshold offset For the quantity information, the base station only needs to configure the energy detection threshold offset information for the certain UE. Otherwise, the energy detection threshold offset information needs to be configured for each UE.
  • the base station may configure an energy detection threshold offset value for each UE, and may also configure multiple energy detection threshold offset values for each UE.
  • the base station may use a second energy detection threshold offset value ED2 different from the first contention channel when the channel is next contending, wherein the first energy detection threshold offset value ED1 is not less than the second energy.
  • the offset value ED2 is detected.
  • Step 402 The UE acquires sending parameter information, where the sending parameter information includes a sending power of the UE.
  • the sending parameter information may further include a sending bandwidth of the UE, where the sending bandwidth of the UE includes any one of an actual sending bandwidth, a maximum sending bandwidth, and a channel detecting bandwidth of the UE on the carrier of the unlicensed spectrum.
  • the transmission power of the UE may also be notified by the base station to the UE.
  • the manner in which the base station notifies the UE also includes a static mode, a semi-static mode, and a dynamic mode.
  • the specific implementation of the static mode may be: the base station sends RRC signaling to the UE, where the RRC signaling carries the transmit power of the UE.
  • the specific implementation of the semi-static mode may be: the base station periodically sends broadcast signaling to the UE, where the broadcast signaling carries the transmit power of the UE.
  • the specific implementation of the dynamic mode may be: when the base station schedules the UE, the base station sends scheduling signaling to the UE, where the scheduling signaling carries the sending power of the UE.
  • Step 403 The UE determines a current energy detection threshold according to the energy detection threshold offset information and the transmission parameter information.
  • the UE determines the current energy detection threshold T according to the energy detection threshold offset information and the transmission parameter information according to the following formula (1);
  • T is the current energy detection threshold
  • the unit is dBm (decibel milli)
  • the value range is a real number set
  • B is a constant, the unit is dBm, the value range is a real number set, optionally, the value of B can be - 72
  • BW is the transmission bandwidth of the UE, and the unit is MHz (megahertz), and the value range is a positive number.
  • the transmission bandwidth of the UE includes the actual transmission bandwidth, the maximum transmission bandwidth, and the channel detection bandwidth of the UE on the carrier of the unlicensed spectrum. Any one of them;
  • P H is a constant, the unit is dBm, and the value range is a real number set.
  • the value of P H can be 23;
  • P TX is the power of the UE, the unit is dBm, and the value range is a real number set.
  • T A is a constant, the unit is dB, the value range is a real number set;
  • Y is the energy detection threshold offset information, the unit is dB, the value range is a real number set;
  • T max 10 ⁇ log10 (F ⁇ BW ), the unit is dBm, the value range is the real number set;
  • E is a constant, the unit is MHz, the value range is positive;
  • F is the power per megahertz, the range is non-negative real number, the unit is mw/MHz (millimeter Watts per megahertz).
  • min(a,b) represents a mathematical operation, taking a minimum between a and b
  • max(a,b) represents a mathematical operation, taking a maximum between a and b
  • log10(a ) represents a mathematical operation, taking a logarithm of 10 for a
  • 'a/b' for mathematical operations, a divided by b.
  • the UE before performing this step, the UE further determines whether there is non-LTE network coverage at and around the location, and if there is a non-LTE network, perform the step; if there is no non-LTE network, the following formula may be used ( 2) Determine the energy detection threshold T, and then perform step 204.
  • the non-LTE network may be a WIFI network or the like.
  • A is a constant, the value range is a real number, the unit is dB, optional, A can take a value of 10; the meaning of the parameters existing in formula (2) has the same meaning as the parameters existing in formula (1), not here. More details.
  • the parameter Y brought into the formula is substantially the energy detection threshold offset value.
  • the UE may directly determine the current energy detection threshold T according to the above formula (1); when the energy detection threshold offset information includes energy detection When indexing the threshold offset value, the UE may obtain the energy detection threshold offset value according to the index of the energy detection threshold offset value, and then determine the current energy detection threshold T according to the above formula (1).
  • the energy detection threshold value set after adding the energy detection threshold offset information may be increased than the energy detection threshold value set when no energy detection threshold offset information is added, or the energy detection threshold offset is added.
  • the energy detection threshold value of the quantity information is equal to the energy detection threshold value of the energy detection threshold offset information.
  • Step 404 The UE performs an evaluation result of the channel idleness according to the energy detection threshold, and the evaluation result is that the channel is idle or the channel is busy.
  • the UE may send a signal on one or more channels; for each channel distributed around the UE, the UE detects the energy of the channel, and if the energy is less than the energy detection threshold, determining that the channel is evaluated as the channel. Idle, otherwise, the evaluation result of the channel is determined to be busy for the channel.
  • the UE selects another energy detection threshold offset value from the energy detection threshold offset information in the next channel competition, and then selects the selected energy.
  • the detection threshold offset value is brought into the above formula (1), that is, the return is performed from the above step 403.
  • Step 405 The UE sends a signal according to the evaluation result.
  • step 404 the UE performs an idle evaluation on the channel. If the evaluation result of the channel is that the channel is idle, the channel may be occupied, and a signal is transmitted through the channel.
  • the energy detection threshold offset information is brought into the energy detection threshold determined by the above formula (1), which may be greater than the energy detection threshold information.
  • the energy detection threshold determined by the equation (1) is taken, so that the energy detection threshold can be determined by the energy detection threshold offset information, and the opportunity for the UE to detect the channel idle is improved based on the energy detection threshold, thereby improving the chance of the UE transmitting the signal.
  • an embodiment of the present invention provides a method for receiving a signal, including:
  • Step 501 The base station configures an energy detection threshold offset information, where the energy detection threshold offset information is used to increase an energy detection threshold of the UE.
  • the base station has the following methods for configuring the energy detection offset information, including:
  • the base station acquires wireless parameter information of the UE, and acquires energy detection threshold offset information according to the wireless parameter information.
  • the base station randomly sets at least one energy detection threshold offset value to obtain energy detection threshold offset information.
  • the base station acquires energy detection threshold offset information according to the statistical history of the UE information.
  • Step 502 The base station sends the energy detection threshold offset information to the UE.
  • the manner in which the base station sends the energy detection threshold offset information to the UE includes a static mode, a semi-static mode, or a dynamic mode.
  • a static mode a semi-static mode, or a dynamic mode.
  • the three modes refer to the embodiment shown in FIG. The description of the offset information will not be described in detail here.
  • the UE After receiving the energy detection threshold offset information, the UE determines an energy detection threshold according to the energy detection threshold offset information before transmitting the signal, performs channel idle estimation according to the energy detection threshold, and sends a signal after the evaluation channel is idle. .
  • the detailed implementation process of the UE sending a signal refer to the related content of steps 402-405 of Embodiment 2, which will not be described in detail herein.
  • Step 503 The base station receives the signal sent by the UE.
  • the base station since the base station configures the energy detection threshold offset information and sends the information to the UE, the UE improves the energy detection threshold determined by the energy detection threshold offset information, thereby improving itself based on the energy detection threshold.
  • the opportunity to detect the channel is idle, thereby increasing the chance of the UE transmitting a signal.
  • an embodiment of the present invention provides a device 600 for transmitting a signal, where the device 600 includes: a processing unit 601 and a sending unit 602;
  • the processing unit 601 is configured to acquire energy detection threshold offset information, where the energy detection offset information is used to increase an energy detection threshold of the UE, and determine, according to the sending parameter information and the energy detection offset information a current energy detection threshold; performing channel idle evaluation according to the current energy detection threshold;
  • the sending unit 602 is configured to send a signal after the processing unit evaluates that the channel is idle.
  • the sending parameter information includes a transmit power of the UE
  • the processing unit 601 is configured to determine the current energy detection threshold according to the following formula:
  • T is the current energy detection threshold
  • the value range is a real number set
  • B is a constant, the value range is a real number set
  • BW is the transmission bandwidth of the UE, and the value range is a positive number
  • P H is a constant, The value range is a real number set
  • P TX is the transmit power of the UE, and the value range is a real number set
  • T A is a constant, the value range is a real number set
  • Y is the energy detection threshold offset value
  • the value is The range is a real number set
  • T max 10 ⁇ log10(F ⁇ BW), the value range is a real number set
  • E is a constant, the value range is a positive number
  • F is the power per megahertz, and the value range is non-negative Real number.
  • the energy detection threshold offset information includes an index of at least one energy detection threshold offset value
  • the processing unit is further configured to acquire the energy detection threshold offset value according to an index of the energy detection threshold offset value.
  • the sending bandwidth of the UE is any one of an actual sending bandwidth, a maximum sending bandwidth, and a channel detecting bandwidth of the UE on a carrier of an unlicensed spectrum;
  • the transmit power includes an actual transmit power of the UE on a carrier of the unlicensed spectrum or a maximum transmit power of the UE on a carrier of the unlicensed spectrum.
  • the device further includes: a receiving unit 603;
  • the receiving unit 603 is configured to receive energy detection threshold offset information, where the energy detection offset information is configured by the base station for the UE; or
  • the processing unit 601 is configured to acquire the energy detection threshold offset information according to current wireless parameter information.
  • the wireless parameter information includes at least one of a propagation path loss information of the UE to the base station, a transmission path loss information of the base station to the UE, an RSRP of the UE, an RSRQ of the UE, an RSSI of the UE, an SINR of the UE, and a transmission power of the UE.
  • the transmit power of the UE includes the maximum transmit power of the UE on the carrier of the unlicensed spectrum, or the actual transmit power of the UE on the carrier of the unlicensed spectrum.
  • the transmit power of the UE is also called the output power of the UE. In this embodiment, the transmit power of the UE is used.
  • the processing unit 601 obtains its wireless parameter information, determines its transmit power according to the wireless parameter information, and sets at least one energy detection gate offset value according to the transmit power size, that is, obtains an energy detection threshold offset. information.
  • the smaller the transmission power the larger the set value of the energy detection threshold offset.
  • the larger the transmission power the smaller the set value of the energy detection threshold offset. If the transmit power is large enough, the set energy detection threshold offset value may be zero.
  • the energy detection threshold offset value set according to the transmission power X1 is Y1
  • the energy detection threshold offset value set according to the transmission power X2 is Y2, and Y2 is greater than Y1.
  • the processing unit 601 is configured to obtain, according to the current wireless parameter information, the energy detection offset corresponding to the current wireless parameter information from the correspondence between the candidate wireless parameter information and the candidate energy detection offset information. Quantity information.
  • the receiving unit 603 is further configured to receive a correspondence between the candidate wireless parameter information and candidate energy detection offset information.
  • the current radio parameter information includes propagation path loss information of the UE to the base station, propagation path loss information of the base station to the UE, reference signal received power RSRP of the UE, and the UE At least one of a reference signal reception quality RSRQ, a received signal strength indication RSSI of the UE, a signal to interference and noise ratio SINR of the UE, and a transmission power of the UE.
  • the UE since the energy detection threshold offset information is used to improve the energy detection threshold of the UE, the UE may increase the determined energy detection threshold by using the energy detection threshold offset information, thereby improving the energy detection threshold according to the energy detection threshold.
  • the UE detects the opportunity of the channel being idle, thereby improving the chance of the UE transmitting a signal.
  • an embodiment of the present invention provides a device 700 for receiving a signal, where the device 700 includes: a sending unit 701 and a receiving unit 702;
  • the sending unit 701 is configured to send energy detection threshold offset information, where the energy detection threshold offset information is used to increase an energy detection threshold energy detection threshold offset of the user equipment;
  • the receiving unit 702 is configured to receive a signal sent by the UE.
  • the device further includes: a processing unit 703;
  • the processing unit 703 is configured to configure the energy detection threshold offset information.
  • the processing unit 703 configures the energy detection threshold offset information in the following three manners, including:
  • the processing unit 703 acquires wireless parameter information of the UE, and acquires energy detection threshold offset information according to the wireless parameter information.
  • the UE may periodically transmit its wireless parameter information.
  • the processing unit 703 may obtain the wireless parameter information sent by the nearest UE, determine the transmit power of the UE according to the wireless parameter information, and set at least one energy detection threshold offset value according to the transmit power of the UE, that is, obtain an energy detection threshold offset. Quantity information.
  • the processing unit 703 randomly sets at least one energy detection threshold offset value to obtain energy detection threshold offset information.
  • the processing unit 703 acquires energy detection threshold offset information according to the statistical history of the UE information.
  • the historical UE information that is calculated by the processing unit 703 includes the success rate of the UE preempting the channel, and the UE detects the number of times the channel is idle or detects the proportion of the channel being idle.
  • the processing unit 703 may set at least one energy detection threshold offset value according to the success rate of the UE preempting the channel, and obtain Energy detection threshold offset information.
  • the set energy detection threshold offset value may be zero.
  • the processing unit 703 sets the ratio of the channel idle or the channel idle ratio detected by the UE. At least one energy detection threshold offset value obtains energy detection threshold offset information.
  • the set value of the energy detection threshold offset is larger.
  • the set value of the energy detection threshold offset is smaller. If the UE detects the number of times the channel is idle or the ratio of the channel idle is detected to be sufficiently large, the set energy detection threshold offset value may be zero.
  • the sending unit 701 is further configured to send a correspondence between candidate wireless parameter information and candidate energy detection threshold offset information.
  • the candidate radio parameter information includes propagation path loss information of the UE to the base station, propagation path loss information of the base station to the UE, reference signal received power RSRP of the UE, and the UE At least one of a reference signal reception quality RSRQ, a received signal strength indication RSSI of the UE, a signal to interference and noise ratio SINR of the UE, and a transmission power of the UE.
  • the energy detection threshold offset information includes an index of at least one energy detection threshold offset value or at least one energy detection threshold offset value.
  • the energy detection threshold offset information for improving the energy detection threshold of the UE is sent, so that the UE provides the energy detection threshold determined by the energy detection threshold offset information, and the sending and receiving thresholds are provided by the energy detection threshold. Signal opportunity.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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

Abstract

L'invention se rapporte au domaine des communications. L'invention concerne des procédés et un dispositif de traduction et de réception d'un signal. Le procédé de transmission d'un signal comprend les étapes suivantes : une unité d'équipement utilisateur (UE) acquiert des informations de quantité de décalage de seuil de détection d'énergie, les informations de quantité de décalage de détection d'énergie étant utilisées pour augmenter un seuil de détection d'énergie de l'unité d'UE ; l'unité d'UE détermine un seuil de détection d'énergie actuel en fonction des informations de paramètres de transmission et des informations de quantité de décalage de détection d'énergie ; l'unité d'UE effectue une évaluation de canal libre en fonction du seuil de détection d'énergie actuel ; et si un résultat d'évaluation montre qu'un canal est libre, l'unité d'UE transmet un signal. L'invention peut augmenter une probabilité de transmission de signal réussie d'une unité d'UE.
PCT/CN2016/078365 2016-04-01 2016-04-01 Procédé et dispositif de traduction et de réception de signal WO2017166309A1 (fr)

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