WO2020140290A1 - 无线通信方法及设备 - Google Patents

无线通信方法及设备 Download PDF

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Publication number
WO2020140290A1
WO2020140290A1 PCT/CN2019/070493 CN2019070493W WO2020140290A1 WO 2020140290 A1 WO2020140290 A1 WO 2020140290A1 CN 2019070493 W CN2019070493 W CN 2019070493W WO 2020140290 A1 WO2020140290 A1 WO 2020140290A1
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Prior art keywords
communication device
user terminal
type
parameter
communication
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PCT/CN2019/070493
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English (en)
French (fr)
Inventor
王欢
王妍茹
侯晓林
吉冈祥平
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NTT Docomo Inc
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NTT Docomo Inc
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Priority to US17/287,248 priority Critical patent/US20210385794A1/en
Priority to CN201980073054.1A priority patent/CN113016218A/zh
Priority to PCT/CN2019/070493 priority patent/WO2020140290A1/zh
Publication of WO2020140290A1 publication Critical patent/WO2020140290A1/zh
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/20—Leader-follower arrangements
    • 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
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present disclosure relates to the field of wireless communication, and more particularly to a wireless communication method and device.
  • D2D device-to-device
  • V2X Vehicle ToTo Everything
  • D2D technology has great advantages in terms of delay and network capacity. Therefore, D2D technology is used as the basic support technology for V2X.
  • V2X For V2X, a variety of transmission resource allocation modes have been proposed, such as a resource allocation mode based on base station scheduling, a resource allocation mode independently selected by a user terminal (in V2X, it can be a car or a roadside unit), or based on user terminal scheduling Resource allocation model.
  • a resource allocation mode based on user terminal scheduling multiple user terminals may form a user terminal group, and one user terminal of the multiple user terminals serves as a header-user terminal (header-UE) and the multiple user terminals Of the remaining user terminals serve as member-user terminals (member-UE), where the head-user terminal is used to control or schedule the member-user terminal, for example, the head-user terminal may allocate resources to the member-user terminal.
  • header-UE header-user terminal
  • member-UE member-user terminal
  • the head-user terminal is used to control or schedule the member-user terminal, for example, the head-user terminal may allocate resources to the member-user terminal.
  • the user terminal can voluntarily act as a head-user terminal. Therefore, there may be a situation in which a plurality of user terminals voluntarily act as head-user terminals, and conflicts may occur.
  • a user terminal including: a control unit configured to acquire a first parameter so that the user terminal determines whether it can serve as a first type user terminal according to the first parameter, The first-type user terminal is used to control a second-type user terminal; the control unit is further configured to determine whether the user terminal can serve as the first-type user terminal at least according to the first parameter.
  • a method performed by a user terminal comprising: acquiring a first parameter so that the user terminal determines whether it can act as a first type user terminal according to the first parameter ,
  • the first-type user terminal is used to control a second-type user terminal; and at least according to the first parameter to determine whether the user terminal can serve as a first-type user terminal.
  • the first parameter is the probability that the user terminal acts as a first type user terminal.
  • the determining whether the user terminal can act as a first type user terminal based on at least the first parameter includes: determining an actual probability that the user terminal acts as a first type user terminal; when the When the actual probability is greater than the probability, it is determined that the user terminal can serve as a first type user terminal.
  • the first parameter is a back-off time when the user terminal acts as a first type user terminal.
  • determining whether the user terminal can serve as a first type user terminal based on at least the first parameter includes: when the backoff time is reduced to zero, determining that the user terminal can serve as a first A type of user terminal.
  • the determining whether the user terminal can act as a first type user terminal based on at least the first parameter includes: before the backoff time is reduced to zero, the user terminal receives the first type In the notification information of the user terminal, it is determined that the user terminal cannot serve as a user terminal of the first type.
  • the method when it is determined that the user terminal can serve as a first type user terminal based on at least the first parameter, the method further includes: sending notification information to a neighboring user terminal of the user terminal, to Informing the neighboring user terminal that the user terminal acts as a first type user terminal.
  • the above method further includes: receiving a second parameter from another user terminal; wherein the determining whether the user terminal can function as a first type user terminal at least according to the first parameter includes: according to the first A parameter and the second parameter determine whether the user terminal can serve as a first type user terminal.
  • the first parameter is attribute information of the user terminal
  • the second parameter is attribute information of the other user terminal
  • the determining whether the user terminal can act as the first according to the first parameter and the second parameter Type user terminals include: when the identification value of the user terminal is greater than the identification value of the other user terminal, or when the identification value of the user terminal is less than the identification value of the other user terminal, determining that the user terminal is capable of Acts as the first type of user terminal.
  • the determining whether the user terminal can serve as a first type user terminal according to the first parameter and the second parameter includes: determining the user terminal according to attribute information of the user terminal Acting as the priority of the first type user terminal, and determining the priority of the other user terminal as the first type user terminal according to the attribute information of the other user terminal; and when the user terminal acts as the first type user terminal When the level is greater than the priority of the other user terminal serving as the first type user terminal, it is determined that the user terminal can serve as the first type user terminal.
  • FIG. 1 is a schematic diagram of a wireless communication system in which embodiments of the present disclosure can be applied.
  • FIG. 2 is a flowchart of a method performed by a communication device according to the first embodiment of the present disclosure.
  • FIG. 3 is a schematic diagram of determining whether a communication device can function as a first type communication device according to a second implementation of the first embodiment of the present disclosure.
  • FIG. 4 is a flowchart of a method performed by a communication device according to a second embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of determining whether a communication device can function as a first type communication device according to a second embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a communication device according to the first embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a communication device according to a second embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of the hardware structure of the involved device according to an embodiment of the present disclosure.
  • the user terminals described herein may include various types of user terminals (User Equipment, UE), such as mobile terminals (or mobile stations) or fixed terminals, however, for convenience, they are sometimes interchangeable in the following To use UE and mobile terminals.
  • UE User Equipment
  • the wireless communication system may be a 5G system or any other type of wireless communication system, such as a Long Term Evolution (LTE) system or an LTE-A (advanced) system.
  • LTE Long Term Evolution
  • LTE-A advanced LTE-A
  • the wireless communication system 100 may include a first type user terminal 110 and a second type user terminal 120, 130, 140.
  • the first type user terminal 110 and the second type user terminal 120, 130, 140 may form a user terminal group, and the first type user terminal 110 is used to control or schedule the second type user terminal 120, 130 in the user terminal group , 140.
  • the first type user terminal 110 may send scheduling information to the second type user terminals 120, 130, and 140, respectively.
  • the first type user terminal 110 Since the first type user terminal 110 has the ability to control or schedule the second type user terminals 120, 130, 140 in the user terminal group, the first type user terminal 110 may also be referred to as a head-user terminal, a control user terminal , Scheduling user terminal, cluster header, local manager, or any user terminal with control or scheduling capabilities. Accordingly, the second type of user terminals 120, 130, 140 may be referred to as member-user terminals, controlled user terminals, scheduled user terminals, cluster members, or any controlled or scheduled user terminals.
  • data transmission can be performed between user terminals in the user terminal group.
  • data transmission can be performed between the first type user terminal 110, the second type user terminal 120, the second type user terminal 130, and the second type user terminal 140.
  • the wireless communication system may include a plurality of user terminals of the first type, and/or Or fewer or more second-type user terminals, and accordingly, the wireless communication system may include a plurality of user terminal groups.
  • a user terminal may voluntarily act as a first type user terminal, and therefore, at a certain moment, there may be a situation where multiple user terminals voluntarily act as a first type user terminal.
  • the purpose of the present disclosure is to provide a wireless communication method and device to avoid as much as possible the situation in which multiple user terminals voluntarily act as first-type user terminals, and from multiple users when multiple user terminals voluntarily act as first-type user terminals The terminal determines the first type of user terminal.
  • the user terminal may be (pre-)set to camp on media access control (Medium Access Control, MAC) corresponding to a resource allocation mode based on user terminal scheduling
  • media access control Medium Access Control, MAC
  • these user terminals may be referred to as candidate first-type user terminals.
  • the candidate first-type user terminal may not belong to any user terminal group (for example, not associated with any user terminal group or not associated with any first-type user terminal, etc.), and has not yet acted as the first User terminal of the type user terminal.
  • the first type user terminal and the second type user terminal are both user terminals, the present disclosure is not limited thereto.
  • the first type user terminal and the second type user terminal may also be communication devices on the network side, such as a base station.
  • the first type of user terminal may be a base station and the second type of user terminal may be a user terminal. Therefore, the terms “user terminal”, “first type user terminal” and “second type user terminal” may be replaced with “communication device”, “first type communication device” and “second type communication device”.
  • the embodiments of the present disclosure will be described below using the terms “communication device”, “first type communication device”, and “second type communication device” as examples.
  • step S201 the communication device acquires a first parameter so that the communication device determines whether it can serve as a first type communication device according to the first parameter, where the first type communication device is used for Control the second type of communication equipment.
  • step S202 the communication device determines whether the communication device can function as a first type communication device based on at least the first parameter.
  • the first parameter may be the probability (or may also be referred to as a probability value) that the communication device acts as the first type of communication device.
  • the probability may be a probability defined by a communication standard protocol specification such as 3GPP.
  • the probability may be 10%, 20% or 50%.
  • the probability may also be a (pre-)set probability, for example, the probability may be written into the SIM card of the communication device or a probability set by the base station after the communication device accesses the base station.
  • the probability may be 10%, 20% or 50%.
  • the probability may be a probability selected from a probability range defined or (pre-)set by a communication standard protocol specification such as 3GPP, for example, the communication device may randomly select from the probability range One probability serves as the probability that the communication device acts as the first type of communication device.
  • the probability range may be 20% to 60%, and the communication device may select 40% from the probability range as the probability that the communication device acts as the first type communication device.
  • the probability may be obtained based on preset rules.
  • the preset rule may be a preset function for the communication device, for example, a utility function.
  • the input of the utility function may be attribute information of the communication device, and the output of the utility function may be associated with the probability.
  • the attribute information of the communication device mentioned here may include the identification information of the communication device, for example, the ID of the communication device, the service set identifier (Service Set Identifier, SSID) or the wireless network temporary identification (Radio Network Tempory Identity, RNTI), etc. one or more.
  • the identification information of the communication device for example, the ID of the communication device, the service set identifier (Service Set Identifier, SSID) or the wireless network temporary identification (Radio Network Tempory Identity, RNTI), etc. one or more.
  • the attribute information of the communication device may also include motion information of the communication device, for example, one or more of the average speed or the maximum speed of the communication device.
  • the attribute information of the communication device may also include the location information of the communication device, for example, the geographical position of the communication device (such as absolute position or area ID, etc.), the relative position of the communication device and the neighboring communication devices that do not belong to any communication device group, Or one or more of the average distance between the communication device and adjacent communication devices that do not belong to any communication device group.
  • the proximity communication device may be determined by the communication device by performing signal measurement on another communication device, for example, the communication device performs signal measurement on the other communication device to obtain a measurement result (eg, signal reception quality); When the measurement result is greater than the first threshold, the other communication device may serve as a neighboring communication device of the communication device.
  • the proximity communication device may also be determined according to the location of the communication device and another communication device, for example, when the straight-line distance between the communication device and another communication device is less than a predetermined threshold, the other communication device may serve as a communication device Proximity communication equipment.
  • the attribute information of the communication device may also include the measurement/perception results of the communication device on neighboring communication devices that do not belong to any communication device group.
  • the measurement/perception results may be, for example, reference signal received power (ReferenceSignalReceivingPower, RSRP), received signal strength indication (ReceivedSignalStrengthIndication, RSSI), reference signal received quality (ReferenceSignalReceivingQuality, RSRQ), signal and interference plus One or more of Noise Ratio (Signal to Interference Plus Ratio, SINR) or Signal to Noise Ratio (SNR), etc.
  • RSRP reference signal received power
  • RSSI received signal strength indication
  • RSSI reference signal received quality
  • RSRQ reference signal received quality
  • SINR Signal to Noise Ratio
  • SINR Signal to Noise Ratio
  • the attribute information of the communication device may also include information on the number of neighboring communication devices that do not belong to any communication device group, for example, the number of neighboring communication devices that do not belong to any communication device group within a predetermined period of time.
  • the attribute information of the communication device may also include priority information of the communication device acting as the first type of communication device.
  • the priority may be defined based on the determination method of the first type communication device. For example, when the first type communication device is determined through high-level signaling, the priority of the communication device acting as the first type communication device may be set to 1; when the first type communication device is (pre-)set, the communication device acts as the first The priority of the type communication device may be set to 2; when the first type communication device is automatically selected, the priority of the communication device acting as the first type communication device may be set to 3.
  • the attribute information of the communication device may also include type information of the communication device, for example, a type identifier of the communication device, such as a type identifier of the communication device belonging to a bus, truck, or car.
  • the attribute information of the communication device may include the identification information of the communication device, the motion information of the communication device, the location information of the communication device, and the measurement of the communication device to the neighboring communication devices that do not belong to any communication device group / Awareness results, information on the number of neighboring communication devices that do not belong to any communication device group, priority information that the communication device serves as the first type of communication device, or kind of communication device information, but the present disclosure is not limited thereto.
  • the attribute information of the communication device may also include any other attribute information of the communication device.
  • the probability that the communication device acts as the first type communication device when the probability that the communication device acts as the first type communication device is obtained based on the utility function, the probability that the communication device acts as the first type communication device may have a corresponding relationship with the output of the utility function. Therefore, after the output of the utility function is determined, the probability of the communication device acting as the first type communication device can be obtained through the correspondence between the two.
  • the output of the utility function can be determined according to the following formula (1):
  • ⁇ and b are weight parameters
  • ⁇ is the speed of the communication device
  • f( ⁇ ) is a function of the speed of the communication device
  • SNR is the signal-to-noise ratio measured by the communication device to the neighboring communication device
  • f(SNR) is the communication A function of the SNR of the device.
  • the probability that the communication device acts as the first type communication device may be determined according to the correspondence between the output of the utility function and the probability that the communication device acts as the first type communication device.
  • the correspondence between the output of the utility function and the probability of the communication device acting as the first type of communication device can be defined in advance, and therefore, the probability of the communication device acting as the first type of communication device can be determined by the output of the utility function and the correspondence .
  • the correspondence between the output of the utility function and the probability that the communication device acts as the first type of communication device can be stored in the communication device in the form of a table, therefore, the communication device can determine the output of the utility function by determining the table The probability that it acts as a first type of communication device.
  • Table 1 below shows an example of the correspondence between the output of the utility function and the probability that the communication device acts as the first type of communication device.
  • the probability that the communication device acts as the first type communication device is 10%; when the output of the utility function is x2, the probability that the communication device acts as the first type communication device is 20% ; And when the output of the utility function is x3, the probability that the communication device acts as the first type of communication device is 50%.
  • Table 2 below shows another example of the correspondence between the output of the utility function and the probability that the communication device acts as the first type of communication device.
  • the probability that the communication device acts as the first type communication device is obtained based on the utility function, it can be determined by the correspondence between the probability that the communication device acts as the first type communication device and the output of the utility function The probability of a type of communication device, but the present disclosure is not limited to this. According to other examples, when the probability that the communication device acts as the first type communication device is obtained based on the utility function, the probability that the communication device acts as the first type communication device may be directly calculated through the utility function, that is, the output of the utility function may be that the communication device acts as the first The probability of a type of communication device.
  • various methods of acquiring the probability that the communication device serves as the first type of communication device have been described above. It should be understood that for multiple communication devices, the same acquisition method may be used to separately obtain the probability that each communication device acts as a first type of communication device. Alternatively, different acquisition methods may also be adopted for different communication devices to separately acquire the probabilities that each communication device acts as a first type communication device.
  • the present disclosure may also include any other method for obtaining the probability that the communication device acts as the first type communication device.
  • the communication device determines whether the communication device is capable of at least according to the first parameter Acts as a first type communication device.
  • the communication device determining whether the communication device can function as the first type communication device according to at least the first parameter may include: determining an actual probability that the communication device acts as the first type communication device; and when the actual probability is greater than or equal to
  • the probability acquired in step S201 is determined as the communication device capable of acting as the first type communication device, when the actual probability is less than the probability acquired in step S201, it is determined that the communication device cannot be used as the first type communication device.
  • the attribute information of the communication device described above may be expired. Therefore, when determining whether the communication device can function as the first type communication device, the communication device may determine that it acts as the first according to the real-time attribute information The actual probability of a type of communication equipment. For example, the communication device may determine its actual probability of acting as the first type of communication device based on the current speed.
  • the actual probability of the communication device acting as the first type of communication device may be 50%; when the speed of the communication device is medium speed (eg, greater than 60 km/h) And less than 120 km/h), the actual probability that the communication device acts as the first type of communication device may be 70%; when the speed of the communication device is low (eg, less than 60 km/h), the communication device acts as the first type of communication device The actual probability can be 30%.
  • the communication device may also determine the actual probability of acting as the first type of communication device according to the current channel conditions.
  • the actual probability that the communication device acts as the first type communication device may be higher, such as 70%; when the channel condition of the communication device is poor, the communication device acts as the first type communication device
  • the actual probability can be low, such as 30%.
  • the method 200 may further include: sending notification information to the neighboring communication device of the communication device to notify the neighbor Communication device
  • the communication device acts as a first type of communication device.
  • the communication device may send notification information through low-level signaling such as physical layer signaling, sidelink control information (Sidelink Control Information, SCI), and downlink control information (Downlink Control Information, DCI).
  • low-level signaling such as physical layer signaling, sidelink control information (Sidelink Control Information, SCI), and downlink control information (Downlink Control Information, DCI).
  • the communication device may send the notification information through high-level signaling such as radio resource control (Radio Resource Control, RRC) signaling or media access control (Media Access Control, MAC) control element (Control Element, CE).
  • RRC Radio Resource Control
  • MAC Media Access Control
  • CE Control Element
  • the communication device can send notification information through a physical sub-chain control channel (Pysical Sidelink Control Channel, PSCCH)/physical sub-chain shared channel (Pysical Sidelink Share Channel, PSSCH).
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Share Channel
  • the resources used can be determined according to the sub-chain resource allocation mechanism.
  • the communication device can also send notification information through the sidelink synchronization signal (Sidelink Synchronization Signal SLSS)/physical sublink broadcast channel (Physical Sidelink Broadcast Channel, PSBCH). In this case, the SLSS/PSBCH transmission timing can be used to send the notification information.
  • SLSS Sidelink Synchronization Signal
  • PSBCH Physical Sidelink Broadcast Channel
  • the communication device may also send other information to neighboring communication devices.
  • the communication device may use the SLSS/PSBCH transmission timing to send synchronization signals, discovery assistance signals, and so on.
  • the method 200 may further include detecting whether the first type communication device exists in the vicinity of the communication device.
  • the area where the communication device is adjacent to the communication device may be used as the adjacent area of the communication device.
  • the neighboring area may be an area containing one or more neighboring communication devices of the communication device.
  • the communication device may detect whether the first type communication device is present in its vicinity by receiving notification information of the first type communication device. For another example, the communication device may detect whether there is a first type communication device in its vicinity by detecting the discovery signal.
  • the first parameter may be the back-off time when the communication device acts as the first type of communication device.
  • the back-off time may be a back-off time defined by a communication standard protocol specification such as 3GPP.
  • the backoff time may be 10ms, 50ms or 100ms.
  • the back-off time may also be a (pre-)set back-off time, for example, the back-off time may be written into the SIM card of the communication device or set by the base station after the communication device accesses the base station Backoff time.
  • the backoff time may be 10ms, 50ms or 100ms.
  • the back-off time may be a back-off time selected from a range of back-off times defined in (or pre-set by) communication standard protocol specifications such as 3GPP, for example, the communication device may A backoff time is randomly selected in the range as the backoff time when the communication device serves as the first type of communication device.
  • the back-off time range may be 10 ms to 100 ms, and the communication device may select 40 ms from the back-off time range as the back-off time for the communication device to serve as the first type of communication device.
  • the back-off time may be obtained based on a preset rule.
  • the preset rule may be a preset function, such as a utility function.
  • the input of the utility function may be attribute information of the communication device, and the output of the utility function may be associated with the back-off time.
  • the attribute information of the communication device mentioned here is similar to the attribute information of the communication device mentioned in the first implementation manner, and will not be repeated here.
  • the back-off time of the communication device acting as the first type of communication device when the back-off time of the communication device acting as the first type of communication device is acquired based on the utility function, the back-off time of the communication device acting as the first type of communication device may have a corresponding relationship with the output of the utility function. Therefore, after the output of the utility function is determined, the back-off time when the communication device serves as the first type of communication device can be obtained through the correspondence between the two.
  • the output of the utility function can be determined according to the above formula (1) first.
  • the backoff time of the communication device acting as the first type communication device may be determined according to the correspondence between the output of the utility function and the backoff time of the communication device acting as the first type communication device.
  • the correspondence between the output of the utility function and the back-off time when the communication device serves as the first type of communication device may be defined in advance.
  • the correspondence between the output of the utility function and the back-off time when the communication device serves as the first type of communication device can be stored in the communication device in the form of a table. Therefore, the communication device can check the table after determining the output of the utility function Determine the back-off time for it to act as the first type of communication device.
  • Table 3 shows an example of the correspondence between the output of the utility function and the back-off time when the communication device serves as the first type of communication device.
  • the output of the utility function The back-off time when the communication device acts as the first type of communication device x1 100ms x2 50ms x3 10ms
  • the back-off time of the communication device acting as the first type communication device is 100ms; when the output of the utility function is x2, the back-off time of the communication device acting as the first type communication device is 50ms ; And when the output of the utility function is x3, the back-off time for the communication device to act as the first type of communication device is 10 ms.
  • Table 4 below shows another example of the correspondence between the output of the utility function and the back-off time when the communication device serves as the first type of communication device.
  • the output of the utility function The back-off time when the communication device acts as the first type of communication device (x1,x2) 100ms (x2,x3) 50ms [x3,x4] 10ms
  • Table 4 Another example of the correspondence between the output of the utility function and the back-off time when the communication device serves as the first type of communication device
  • the back-off time of the communication device acting as the first type of communication device is 100 ms; when the output of the utility function falls in the interval [x2, x3), the communication The back-off time of the device acting as the first type communication device is 50 ms; and when the output of the utility function falls in the interval [x3, x4], the back-off time of the communication device acting as the first type communication device is 10 ms.
  • the communication device can be determined by the correspondence between the back-off time of the communication device acting as the first type communication device and the output of the utility function Acts as a back-off time for the first type of communication device, but the present disclosure is not limited to this. According to other examples, when the back-off time of the communication device acting as the first type communication device is obtained based on the utility function, the back-off time of the communication device acting as the first type communication device may be directly calculated through the utility function, that is, the output of the utility function may be the communication device Acts as a back-off time for the first type of communication device.
  • various methods of obtaining the back-off time when the communication device serves as the first type of communication device have been described above. It should be understood that for multiple communication devices, the same acquisition method may be used to separately obtain the back-off time of each communication device serving as the first type of communication device. Alternatively, different acquisition methods may also be adopted for different communication devices to separately obtain the back-off time of each communication device serving as the first type of communication device.
  • the present disclosure may also include any other method of acquiring the back-off time of the communication device serving as the first type of communication device.
  • the communication device determines whether the communication device is based at least on the first parameter It can act as a first type communication device.
  • the communication device determining whether the communication device can function as the first type communication device based on at least the first parameter may include: when the back-off time is reduced to zero, determining that the communication device can function as the first type communication device .
  • the communication device when the communication device voluntarily acts as the first type communication device, the communication device cannot immediately act as the first type communication device, but may only act as the first type communication device after the time period corresponding to the back-off time .
  • the back-off time of the communication device starts to be reduced.
  • the back-off time can be reduced according to the defined/(pre-set) granularity, such as a certain step size can be reduced every other granularity.
  • the granularity mentioned here can be a specific time period (the unit can be seconds or milliseconds), transmission time interval (Transmission Time Interval, TTI), symbol, time slot, mini-slot, subframe, frame, SLSS /PSBCH transmission timing (transmission occasion).
  • TTI Transmission Time Interval
  • the following uses the granularity TTI as an example to describe how to reduce the back-off time of a communication device.
  • the backoff time is reduced and reduced to 80 ms after the first TTI; after the second TTI, the backoff time continues to be reduced and reduced to 60 ms; After the third TTI, the back-off time continues to be reduced and reduced to 40 ms; after the fourth TTI, the back-off time continues to decrease and to 20 ms; and after the fifth TTI, the back-off time continues to decrease and is reduced to 0.
  • the communication device determines whether the communication device is based at least on the first parameter Being able to function as the first type communication device may include determining that the communication device cannot function as the first type communication device when the communication device receives notification information of the first type communication device before the backoff time is reduced to zero.
  • a certain communication device can serve as a first type communication device, it can notify other communication devices that it is acting as a first type communication device.
  • the notification information of the first-type communication device is received between the start of the back-off time and the reduction to zero, it means that there are other communication devices serving as the first-type communication device. Therefore, the communication The device cannot act as the first type of communication device.
  • FIG. 3 is a schematic diagram of determining whether a communication device can function as a first type communication device according to a second implementation of the first embodiment of the present disclosure.
  • the first communication device (UE1), the second communication device (UE2), the third communication device (UE3), and the fourth communication device (UE4) all voluntarily act as the first type communication device
  • the first communication device, the second communication device, the third communication device, and the fourth communication device each have a back-off time.
  • the backoff time t4 of the fourth communication device ⁇ the backoff time t1 of the first communication device ⁇ the backoff time t3 of the third communication device ⁇ the backoff time t2 of the second communication device.
  • the fourth communication device in step S201, the backoff time t4 of the fourth communication device acting as the first type communication device is acquired; and in step S202, when the backoff time t4 is reduced to zero, the fourth communication device can act as the first Type communication equipment. Therefore, after step S202, the fourth communication device acts as a first type communication device, and may notify the first, second, and third communication devices of information that it acts as a first type communication device.
  • step S201 the backoff time t1 of the first communication device acting as the first type of communication device is acquired; and in step S202, the backoff time t1 is reduced to zero and received before the backoff time t1 is reduced to zero
  • the first communication device cannot act as the first type communication device. Therefore, after step S202, the first communication device no longer attempts to act as a first type communication device, but may act as a second type communication device.
  • the second and third communication devices are similar to the first communication device, and will not be repeated here.
  • the method 200 may further include: Notification information is sent to notify the neighboring communication device that the communication device acts as a first type communication device.
  • the method 200 may further include: detecting whether the first type communication exists in the vicinity of the communication device equipment. This is similar to the first implementation, and will not be repeated here.
  • the communication device it is possible to set a probability or back-off time for the communication device to act as the first type communication device to increase the randomness or restriction on the communication device to act voluntarily as the first type communication device, thereby reducing multiple communication devices
  • the possibility of acting as the first type of communication device at the same time avoids the situation that multiple communication devices act as the first type of communication device at the same time, and realizes the determination of one communication device from the multiple communication devices to act as the first type of communication device .
  • step S401 the communication device acquires a first parameter so that the communication device determines whether it can serve as a first type communication device according to the first parameter, where the first type communication device is used for Control the second type of communication equipment.
  • the first parameter may be attribute information of the communication device.
  • the attribute information of the communication device mentioned here may include the identification information of the communication device, for example, the ID of the communication device, the service set identifier (Service Set Identifier, SSID) or the wireless network temporary identification (Radio Network Tempory Identity, RNTI), etc. one or more.
  • the identification information of the communication device for example, the ID of the communication device, the service set identifier (Service Set Identifier, SSID) or the wireless network temporary identification (Radio Network Tempory Identity, RNTI), etc. one or more.
  • the attribute information of the communication device may also include motion information of the communication device, for example, one or more of the average speed or the maximum speed of the communication device.
  • the attribute information of the communication device may also include the location information of the communication device, for example, the geographical position of the communication device (such as absolute position or area ID, etc.), the relative position of the communication device and the neighboring communication devices that do not belong to any communication device group, Or one or more of the average distance between the communication device and adjacent communication devices that do not belong to any communication device group.
  • the proximity communication device may be determined by the communication device by performing signal measurement on another communication device, for example, the communication device performs signal measurement on the other communication device to obtain a measurement result (eg, signal reception quality); When the measurement result is greater than the first threshold, the other communication device may serve as a neighboring communication device of the communication device.
  • the proximity communication device may also be determined according to the location of the communication device and another communication device, for example, when the straight-line distance between the communication device and another communication device is less than a predetermined threshold, the other communication device may serve as a communication device Proximity communication equipment.
  • the attribute information of the communication device may also include the measurement/perception results of the communication device on neighboring communication devices that do not belong to any communication device group.
  • the measurement/perception results can be, for example, reference signal received power (ReferenceSignalReceivingPower, RSRP), received signal strength indication (ReceivedSignalStrengthIndication, RSSI), reference signal received quality (ReferenceSignalReceivingQuality, RSRQ), signal and interference plus One or more of Noise Ratio (Signal to Interference Plus Ratio, SINR) or Signal to Noise Ratio (SNR), etc.
  • RSRP reference signal received power
  • RSSI received signal strength indication
  • RSSI reference signal received quality
  • RSRQ reference signal received quality
  • SINR Signal to Noise Ratio
  • SINR Signal to Noise Ratio
  • the attribute information of the communication device may also include the number of neighboring communication devices that do not belong to any communication device group, for example, the number of neighboring communication devices that do not belong to any communication device group within a predetermined period of time.
  • the attribute information of the communication device may also include priority information of the communication device acting as the first type of communication device.
  • the priority may be defined based on the determination method of the first type communication device. For example, when the first type communication device is determined through high-level signaling, the priority of the communication device acting as the first type communication device may be set to 1; when the first type communication device is (pre-)set, the communication device acts as the first The priority of the type communication device may be set to 2; when the first type communication device is automatically selected, the priority of the communication device acting as the first type communication device may be set to 3.
  • the attribute information of the communication device may also include type information of the communication device, for example, a type identifier of the communication device, such as a type identifier of the communication device belonging to a bus, truck, or car.
  • the attribute information of the communication device may include the identification information of the communication device, the motion information of the communication device, the location information of the communication device, and the measurement of the communication device to the neighboring communication devices that do not belong to any communication device group / Awareness results, information on the number of neighboring communication devices that do not belong to any communication device group, priority information that the communication device serves as the first type of communication device, or kind of communication device information, but the present disclosure is not limited thereto.
  • the attribute information of the communication device may also include any other attribute information of the communication device.
  • attribute information of the communication device may be stored in the memory of the communication device.
  • the communication device acquiring the first parameter may include the communication device reading its own attribute information from its own memory.
  • the method 400 may further include: the communication device sends its own attribute information to other communication devices, so that the other communication device determines whether it can serve as the first type of communication device.
  • step S402 the communication device receives the second parameter from other communication devices.
  • step S402 may be performed before step S401, or simultaneously with step S401.
  • the second parameter may be attribute information of other communication devices, for example.
  • the attribute information of other communication devices is similar to the attribute information of the communication devices described above, and will not be repeated here.
  • the other communication devices may send their own attribute information to the communication device.
  • other communication devices may broadcast their own attribute information according to the defined/(pre-)set packet transmission number/duration and packet interval.
  • the communication device can receive attribute information of other communication devices from other communication devices according to the defined/(pre-set) packet transmission number/duration and packet interval.
  • the other communication devices can periodically transmit their own attribute information.
  • other communication devices may periodically broadcast their own attribute information.
  • the communication device may periodically receive attribute information of other communication devices from other communication devices.
  • other communication devices may use, for example, physical layer signaling, secondary link control information (Sidelink Control Information (SCI), downlink control information (Downlink Control Information, DCI) Low-level signaling sends its own attribute information.
  • SCI secondary link control information
  • DCI Downlink Control Information
  • Low-level signaling sends its own attribute information.
  • other communication devices may send their own attributes through high-level signaling such as Radio Resource Control (RRC) signaling or Media Access Control (MAC) Control Element (CE) information.
  • RRC Radio Resource Control
  • MAC Media Access Control
  • CE Control Element
  • the communication device may receive attribute information of other communication devices from other communication devices through low-level signaling or high-level signaling.
  • other communication devices may send their own attributes through a physical secondary chain control channel (Pysical Sidelink Control Channel, PSCCH)/physical secondary chain shared channel (Pysical Sidelink Shared Channel, PSSCH) information.
  • PSCCH Physical Secondary Chain Control Channel
  • PSSCH Physical Secondary Chain shared channel
  • other communication devices can also send their own attribute information through Sidelink Synchronization Signal (SLSS)/Physical Sidelink Broadcast Channel (Physical Sidelink Broadcast Channel, PSBCH).
  • SLSS Sidelink Synchronization Signal
  • PSBCH Physical Sidelink Broadcast Channel
  • other communication devices can also send their own attribute information through other sub-chain channels.
  • the communication device can receive attribute information of other communication devices from other communication devices through the PSCCH/PSSCH, SLSS/PSBCH, or other secondary chain channels.
  • the communication device before a communication device voluntarily acts as a first-type communication device, the communication device can monitor the first received from other communication devices within a defined/(pre)set time period Two parameters. This can ensure that the communication device and other communication devices have sufficient time to exchange the parameters of both parties, so as to determine the most suitable first type communication device from the communication device and other communication devices.
  • the communication device determines whether the communication device can act as a first type communication device based on the first parameter and the second parameter. For example, the communication device may determine whether the communication device can function as the first type communication device according to the first parameter and the second parameter, and the preset rule.
  • the preset rule may be, for example, to select the communication device with the largest or smallest attribute as the first type of communication device.
  • the communication device according to the first parameter and the The second parameter determining whether the communication device can function as the first type communication device may include: when the identification value of the communication device is greater than the identification value of the other communication device, determining that the communication device can function as the first type communication device .
  • the communication device determining whether the communication device can function as the first type communication device according to the first parameter and the second parameter may include: When the identification value of the communication device is smaller than the identification value of the other communication device, it is determined that the communication device can serve as a first type communication device.
  • the communication device determining whether the communication device can act as the first type communication device according to the first parameter and the second parameter may include: when the priority of the communication device is greater than that of the other communication devices At the level, it is determined that the communication device can function as a first type communication device.
  • the communication device determining whether the communication device can function as the first type communication device according to the first parameter and the second parameter may include: according to attribute information of the communication device Determining the priority of the communication device acting as the first type communication device, and determining the priority of the other communication device acting as the first type communication device based on the attribute information of the other communication device; and when the communication device acts as the first When the priority of the type communication device is greater than the priority of the other communication device acting as the first type communication device, it is determined that the communication device can act as the first type communication device.
  • determining the priority of the communication device acting as the first type of communication device based on the attribute information of the communication device may be determining the communication device acting as the first type based on the attribute information of the communication device and the utility function for the communication device Priority of communication equipment.
  • the input of the utility function may be attribute information of the communication device, and the output of the utility function may be associated with the priority.
  • the priority of the communication device acting as the first type of communication device may have a corresponding relationship with the output of the utility function. Therefore, when the output of the utility function is determined, the priority of the communication device acting as the first type communication device can be obtained through the correspondence between the two.
  • the output of the utility function can be determined according to the following formula (2):
  • ⁇ and b are weight parameters
  • ⁇ is the speed of the communication device
  • f( ⁇ ) is a function of the speed of the communication device
  • SNR is the signal-to-noise ratio measured by the communication device to the neighboring communication device
  • f(SNR) is the communication A function of the SNR of the device.
  • the priority of the communication device acting as the first type communication device may be determined according to the correspondence between the output of the utility function and the priority of the communication device acting as the first type communication device.
  • the correspondence between the output of the utility function and the priority of the communication device acting as the first type communication device may be defined in advance.
  • the correspondence between the output of the utility function and the priority of the communication device acting as the first type of communication device can be stored in the communication device in the form of a table. Therefore, the communication device can check the table after determining the output of the utility function Determine its priority as the first type of communication device.
  • Table 5 below shows an example of the correspondence between the output of the utility function and the priority of the communication device acting as the first type of communication device.
  • the output of the utility function The communication device acts as the priority of the first type communication device x1 1 x2 2 x3 3
  • Table 6 below shows another example of the correspondence between the output of the utility function and the priority of the communication device acting as the first type communication device.
  • the output of the utility function acts as the priority of the first type communication device (x1,x2) 1 (x2,x3) 2 [x3,x4] 3
  • the priority of the communication device acting as the first type communication device is determined by the correspondence between the priority of the communication device acting as the first type communication device and the output of the utility function
  • the present disclosure is not limited thereto.
  • the priority of the communication device acting as the first type communication device may be directly calculated through the utility function, that is, the output of the utility function may be the priority of the communication device acting as the first type communication device.
  • the present disclosure is not limited thereto.
  • a communication device with the largest or smallest other attributes may also be selected as the first type of communication device.
  • the communication device with the largest number of neighboring communication devices may be selected as the first type of communication device.
  • the communication device with the smallest average distance from adjacent communication devices may be selected to serve as the first type of communication device.
  • the method 400 may further include: sending notification information to the neighboring communication device of the communication device to notify the neighboring communication device that the communication device acts The first type of communication equipment.
  • the communication device may send notification information through low-level signaling such as physical layer signaling, sidelink control information (Sidelink Control Information, SCI), and downlink control information (Downlink Control Information, DCI).
  • low-level signaling such as physical layer signaling, sidelink control information (Sidelink Control Information, SCI), and downlink control information (Downlink Control Information, DCI).
  • the communication device may send the notification information through high-level signaling such as radio resource control (Radio Resource Control, RRC) signaling or media access control (Media Access Control, MAC) control element (Control Element, CE).
  • RRC Radio Resource Control
  • MAC Media Access Control
  • CE Control Element
  • the communication device can send notification information through a physical sub-chain control channel (Pysical Sidelink Control Channel, PSCCH)/physical sub-chain shared channel (Pysical Sidelink Share Channel, PSSCH).
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Share Channel
  • the resources used can be determined according to the sub-chain resource allocation mechanism.
  • the communication device can also send notification information through the sidelink synchronization signal (Sidelink Synchronization Signal SLSS)/physical sublink broadcast channel (Physical Sidelink Broadcast Channel, PSBCH). In this case, the SLSS/PSBCH transmission timing can be used to send the notification information.
  • SLSS Sidelink Synchronization Signal
  • PSBCH Physical Sidelink Broadcast Channel
  • the communication device may also send other information to neighboring communication devices.
  • the communication device may use the SLSS/PSBCH transmission timing to send synchronization signals, discovery assistance signals, and so on.
  • the method 400 may further include detecting whether the first type communication device exists in the vicinity of the communication device.
  • the area where the communication device is adjacent to the communication device may be used as the adjacent area of the communication device.
  • the communication device may detect whether the first type communication device is present in its vicinity by receiving notification information of the first type communication device. For another example, the communication device may detect whether there is a first type communication device in its vicinity by detecting the discovery signal.
  • FIG. 5 is a schematic diagram of determining whether a communication device can function as a first type communication device according to a second embodiment of the present disclosure. As shown in FIG. 5, it is assumed that the first communication device (UE1), the second communication device (UE2), the third communication device (UE3), and the fourth communication device (UE4) all voluntarily act as the first type communication device And the fourth communication device executes method 400.
  • the fourth communication device acquires its own attribute information; in step S402, the fourth communication device acquires attribute information of the first, second, and third communication devices from the first, second, and third communication devices; and in step S403 Among them, the fourth communication device determines whether it can serve as the first type of communication device according to its own attribute information and attribute information of the first, second, and third communication devices.
  • the fourth communication device acts as the first type communication device, and the fourth communication device may send notification information to the first, second, and third communication devices to The first, second, and third communication devices are notified to inform themselves of the information acting as the first type of communication device. Accordingly, after receiving the notification information of the fourth communication device, the first, second, and third communication devices may no longer attempt to act as the first type communication device, but may act as the second type communication device.
  • communication devices can interact with each other to assist in determining the first type of communication device, so that the communication device can determine whether it can serve as the first type of communication device by comparison, thereby voluntarily acting as a communication device
  • the first type communication device increases randomness or limitation, thereby reducing the possibility that multiple communication devices act as the first type communication device at the same time, avoiding the situation that multiple communication devices act as the first type communication device at the same time, and achieving One communication device is determined from the plurality of communication devices to serve as the first type communication device.
  • the communication device when the communication device voluntarily acts as the first type communication device, the communication device acts as the first type communication device.
  • the communication device may send notification information to its neighboring communication device to notify the neighboring communication device that the communication device acts as the first type communication device.
  • the neighboring communication device of the communication device receives the notification information of the first type communication device, it no longer attempts to act as the first type communication device, but may act as the second type communication device.
  • the problems caused by this situation can be solved by other mechanisms.
  • the problems caused by this situation can be solved through a resource allocation mechanism, a reorganization rule of the communication device group, and the like.
  • FIG. 6 is a schematic structural diagram of a communication device 600 according to the first embodiment of the present disclosure. Since the function of the communication device 600 is the same as the details of the method described above with reference to FIG. 2, a detailed description of the same content is omitted here for simplicity.
  • the communication device 600 includes a control unit 610 configured to acquire a first parameter so that the communication device determines whether it can act as a first type communication device according to the first parameter, the first A type communication device is used to control a second type communication device; and the control unit 610 is further configured to determine whether the communication device can function as a first type communication device based at least on the first parameter.
  • the communication device 600 may include other components. However, since these components are not related to the content of the embodiments of the present disclosure, illustration and description thereof are omitted here.
  • the first parameter may be the probability (or may also be referred to as a probability value) that the communication device acts as the first type of communication device.
  • the probability may be a probability defined by a communication standard protocol specification such as 3GPP.
  • the probability may also be a (pre-)set probability, for example, the probability may be written into the SIM card of the communication device or a probability set by the base station after the communication device accesses the base station.
  • the probability may be a probability selected from a probability range defined or (pre-)set by a communication standard protocol specification such as 3GPP, for example, the communication device may randomly select from the probability range One probability serves as the probability that the communication device acts as the first type of communication device.
  • the probability may be obtained based on preset rules.
  • the preset rule may be a preset function for the communication device, for example, a utility function.
  • the input of the utility function may be attribute information of the communication device, and the output of the utility function may be associated with the probability.
  • the probability that the communication device acts as the first type communication device when the probability that the communication device acts as the first type communication device is obtained based on the utility function, the probability that the communication device acts as the first type communication device may have a corresponding relationship with the output of the utility function. Therefore, after the output of the utility function is determined, the probability of the communication device acting as the first type communication device can be obtained through the correspondence between the two.
  • the output of the utility function can be determined according to the above formula (1) first. Then, the probability that the communication device acts as the first type communication device may be determined according to the correspondence between the output of the utility function and the probability that the communication device acts as the first type communication device. For example, the correspondence between the output of the utility function and the probability of the communication device acting as the first type of communication device can be defined in advance, and therefore, the probability of the communication device acting as the first type of communication device can be determined by the output of the utility function and the correspondence .
  • the correspondence between the output of the utility function and the probability that the communication device acts as the first type of communication device can be stored in the communication device in the form of a table, therefore, the communication device can determine the output of the utility function by determining the table The probability that it acts as a first type of communication device.
  • the control unit 610 determines whether the communication device can function as the first type communication device at least according to the first parameter. Specifically, the control unit 610 may determine the actual probability that the communication device acts as the first type communication device; and when the actual probability is greater than or equal to the acquired probability, determine that the communication device can act as the first type communication device when the When the actual probability is less than the acquired probability, it is determined that the communication device cannot serve as the first type of communication device.
  • the attribute information of the communication device described above may be expired. Therefore, when determining whether the communication device can function as the first type communication device, the control unit 610 may determine that it acts as a real-time attribute information The actual probability of the first type of communication equipment.
  • the communication device 600 may further include: a transmission unit 620, which is set to a neighboring communication device of the communication device Notification information is sent to notify the neighboring communication device that the communication device acts as a first type communication device.
  • the communication device may send notification information through low-level signaling such as physical layer signaling, sidelink control information (Sidelink Control Information, SCI), and downlink control information (Downlink Control Information, DCI).
  • low-level signaling such as physical layer signaling, sidelink control information (Sidelink Control Information, SCI), and downlink control information (Downlink Control Information, DCI).
  • the communication device may send the notification information through high-level signaling such as radio resource control (Radio Resource Control, RRC) signaling or media access control (Media Access Control, MAC) control element (Control Element, CE).
  • RRC Radio Resource Control
  • MAC Media Access Control
  • CE Control Element
  • the communication device can send notification information through a physical sub-chain control channel (Pysical Sidelink Control Channel, PSCCH)/physical sub-chain shared channel (Pysical Sidelink Share Channel, PSSCH).
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Share Channel
  • the resources used can be determined according to the sub-chain resource allocation mechanism.
  • the communication device can also send notification information through the sidelink synchronization signal (Sidelink Synchronization Signal SLSS)/physical sublink broadcast channel (Physical Sidelink Broadcast Channel, PSBCH). In this case, the SLSS/PSBCH transmission timing can be used to send the notification information.
  • SLSS Sidelink Synchronization Signal
  • PSBCH Physical Sidelink Broadcast Channel
  • the control unit 610 when the control unit 610 determines that the communication device cannot function as the first type communication device, the control unit 610 can also detect whether the first type communication device exists in the vicinity of the communication device.
  • the area where the communication device is adjacent to the communication device may be used as the adjacent area of the communication device.
  • the neighboring area may be an area containing one or more neighboring communication devices of the communication device.
  • the communication device can detect whether the first type communication device is present in its vicinity by whether or not the notification information of the first type communication device is received. For another example, the communication device may detect whether there is a first type communication device in its vicinity by detecting the discovery signal.
  • the first parameter may be the back-off time when the communication device acts as the first type of communication device.
  • the back-off time may be a back-off time defined by a communication standard protocol specification such as 3GPP.
  • the back-off time may also be a (pre-)set back-off time, for example, the back-off time may be written into the SIM card of the communication device or set by the base station after the communication device accesses the base station Backoff time.
  • the back-off time may be a back-off time selected from a range of back-off times defined in (or pre-set by) communication standard protocol specifications such as 3GPP, for example, the communication device may A backoff time is randomly selected in the range as the backoff time when the communication device serves as the first type of communication device.
  • the back-off time may be obtained based on a preset rule.
  • the preset rule may be a preset function, such as a utility function.
  • the input of the utility function may be attribute information of the communication device, and the output of the utility function may be associated with the back-off time.
  • the attribute information of the communication device mentioned here is similar to the attribute information of the communication device mentioned in the first implementation manner, and will not be repeated here.
  • the back-off time of the communication device acting as the first type of communication device when the back-off time of the communication device acting as the first type of communication device is acquired based on the utility function, the back-off time of the communication device acting as the first type of communication device may have a corresponding relationship with the output of the utility function. Therefore, after the output of the utility function is determined, the back-off time when the communication device serves as the first type of communication device can be obtained through the correspondence between the two.
  • the output of the utility function can be determined according to the above formula (1) first.
  • the backoff time of the communication device acting as the first type communication device may be determined according to the correspondence between the output of the utility function and the backoff time of the communication device acting as the first type communication device.
  • the correspondence between the output of the utility function and the back-off time when the communication device serves as the first type of communication device may be defined in advance.
  • the correspondence between the output of the utility function and the back-off time when the communication device serves as the first type of communication device can be stored in the communication device in the form of a table. Therefore, the communication device can check the table after determining the output of the utility function Determine the back-off time for it to act as the first type of communication device.
  • the control unit 610 determines whether the communication device can function as the first type communication device at least according to the first parameter. Specifically, the control unit 610 may determine that the communication device can serve as a first type communication device when the back-off time is reduced to zero. In this implementation, when the communication device voluntarily acts as the first type communication device, the communication device cannot immediately act as the first type communication device, but may only act as the first type communication device after the time period corresponding to the back-off time .
  • the back-off time of the communication device starts to be reduced.
  • the back-off time can be reduced according to the defined/(pre-set) granularity, such as a certain step size can be reduced every other granularity.
  • the granularity mentioned here can be a specific time period (the unit can be seconds or milliseconds), transmission time interval (Transmission Time Interval, TTI), symbol, time slot, mini-slot, subframe, frame, SLSS /PSBCH transmission timing (transmission occasion).
  • TTI Transmission Time Interval
  • the following uses the granularity TTI as an example to describe how to reduce the back-off time of a communication device.
  • the control unit 610 determines whether the communication device can function as the first type communication device at least according to the first parameter. Specifically, the control unit 610 may also determine that the communication device cannot serve as the first type communication device when the communication device receives notification information of the first type communication device before the backoff time is reduced to zero. As will be described below, when a certain communication device can serve as a first type communication device, it can notify other communication devices that it is acting as a first type communication device.
  • the notification information of the first-type communication device is received between the start of the back-off time and the reduction to zero, it means that there are other communication devices serving as the first-type communication device. Therefore, the communication The device cannot act as the first type of communication device.
  • the communication device 600 may further include: a sending unit 620, which is set to Notification information is sent to the neighboring communication device of the communication device to notify the neighboring communication device that the communication device acts as a first type communication device.
  • a sending unit 620 which is set to Notification information is sent to the neighboring communication device of the communication device to notify the neighboring communication device that the communication device acts as a first type communication device.
  • the control unit 610 can also detect whether the first type communication device exists in the vicinity of the communication device. This is similar to the first implementation, and will not be repeated here.
  • the communication device With the communication device according to the first embodiment of the present disclosure, it is possible to set the probability or back-off time for the communication device to act as the first type communication device to increase the randomness or restriction on the communication device to act voluntarily as the first type communication device, thereby reducing The possibility of two communication devices acting as the first type communication device at the same time, avoiding the situation that multiple communication devices act as the first type communication device at the same time, and realizing that one communication device from the multiple communication devices acts as the first Type communication equipment.
  • FIG. 7 is a schematic structural diagram of a communication device 700 according to a second embodiment of the present disclosure. Since the function of the communication device 700 is the same as the details of the method described above with reference to FIG. 4, a detailed description of the same content is omitted here for simplicity. As shown in FIG.
  • the communication device 700 includes: a control unit 710 configured to acquire a first parameter so that the communication device determines whether it can act as a first type communication device according to the first parameter, the first The type communication device is used to control the second type communication device; the receiving unit 720 is set to receive the second parameter from other communication devices; the control unit 710 is also set according to the first parameter and the second The parameter determines whether the communication device can act as a first type communication device.
  • the communication device 700 may also include other components. However, since these components are not related to the content of the embodiments of the present disclosure, illustration and description thereof are omitted here.
  • the first parameter may be attribute information of the communication device.
  • the attribute information of the communication device may be stored in the memory of the communication device.
  • the control unit 710 may include reading its own attribute information from its own memory.
  • the communication device 700 may further include: a sending unit (not shown in the figure), which is set to send its own attribute information to other communication devices, so that other The communication device judges whether it can act as a first type communication device.
  • the second parameter may be attribute information of other communication devices, for example.
  • the attribute information of other communication devices is similar to the attribute information of the communication devices described above, and will not be repeated here.
  • the other communication devices may send their own attribute information to the communication device.
  • other communication devices may broadcast their own attribute information according to the defined/(pre-)set packet transmission number/duration and packet interval.
  • the receiving unit 720 may receive attribute information of other communication devices from other communication devices according to the defined/(pre-set) packet transmission number/duration and packet interval.
  • the other communication devices can periodically transmit their own attribute information.
  • other communication devices may periodically broadcast their own attribute information.
  • the receiving unit 720 may periodically receive attribute information of other communication devices from other communication devices.
  • other communication devices may use, for example, physical layer signaling, secondary link control information (Sidelink Control Information (SCI), downlink control information (Downlink Control Information, DCI) Low-level signaling sends its own attribute information.
  • SCI secondary link control information
  • DCI Downlink Control Information
  • Low-level signaling sends its own attribute information.
  • other communication devices may send their own attributes through high-level signaling such as Radio Resource Control (RRC) signaling or Media Access Control (MAC) Control Element (CE) information.
  • RRC Radio Resource Control
  • MAC Media Access Control
  • CE Control Element
  • the receiving unit 720 may receive attribute information of other communication devices from other communication devices through low-layer signaling or high-layer signaling.
  • other communication devices may send their own attributes through a physical secondary chain control channel (Pysical Sidelink Control Channel, PSCCH)/physical secondary chain shared channel (Pysical Sidelink Shared Channel, PSSCH) information.
  • PSCCH Physical Secondary Chain Control Channel
  • PSSCH Physical Secondary Chain shared channel
  • other communication devices can also send their own attribute information through Sidelink Synchronization Signal (SLSS)/Physical Sidelink Broadcast Channel (Physical Sidelink Broadcast Channel, PSBCH).
  • SLSS Sidelink Synchronization Signal
  • PSBCH Physical Sidelink Broadcast Channel
  • other communication devices can also send their own attribute information through other sub-chain channels.
  • the receiving unit 720 may receive attribute information of other communication devices from other communication devices through PSCCH/PSSCH, SLSS/PSBCH, or other secondary chain channels.
  • the communication device before a communication device voluntarily acts as a first-type communication device, the communication device can monitor the first received from other communication devices within a defined/(pre)set time period Two parameters. This can ensure that the communication device and other communication devices have sufficient time to exchange the parameters of both parties, so as to determine the most suitable first type communication device from the communication device and other communication devices.
  • control unit 710 may determine whether the communication device can function as a first type communication device according to the first parameter and the second parameter, and a preset rule.
  • the preset rule may be, for example, to select the communication device with the largest or smallest attribute as the first type of communication device.
  • the control unit 710 may determine the identification of the communication device When the value is greater than the identification value of the other communication device, it is determined that the communication device can serve as the first type of communication device.
  • the control unit 710 may determine that the communication device can serve as the first when the identification value of the communication device is less than the identification value of the other communication device Type communication equipment.
  • the control unit 710 may determine that the communication device can act as a first type communication device when the priority of the communication device is greater than the priority of the other communication devices.
  • control unit 710 may determine the priority of the communication device acting as the first type of communication device based on the attribute information of the communication device, and determine the attribute information based on the other communication device The priority of the other communication device acting as the first type communication device; and when the priority of the communication device acting as the first type communication device is greater than the priority of the other communication device acting as the first type communication device The communication device can act as a first type communication device.
  • determining the priority of the communication device acting as the first type of communication device based on the attribute information of the communication device may be determining the communication device acting as the first type based on the attribute information of the communication device and the utility function for the communication device Priority of communication equipment.
  • the input of the utility function may be attribute information of the communication device, and the output of the utility function may be associated with the priority.
  • the priority of the communication device acting as the first type of communication device may have a corresponding relationship with the output of the utility function. Therefore, when the output of the utility function is determined, the priority of the communication device acting as the first type communication device can be obtained through the correspondence between the two.
  • the output of the utility function can be determined according to the above formula (2).
  • the priority of the communication device acting as the first type communication device may be determined according to the correspondence between the output of the utility function and the priority of the communication device acting as the first type communication device.
  • the correspondence between the output of the utility function and the priority of the communication device acting as the first type communication device may be defined in advance.
  • the correspondence between the output of the utility function and the priority of the communication device acting as the first type of communication device can be stored in the communication device in the form of a table. Therefore, the communication device can check the table after determining the output of the utility function Determine its priority as the first type of communication device.
  • the sending unit may also send notification information to the neighboring communication device of the communication device to notify the neighboring communication device that the communication device acts as a first type communication device.
  • control unit 710 determines that the communication device cannot function as the first type communication device, the control unit 710 can also detect whether the first type communication device exists in the vicinity of the communication device.
  • the area where the communication device is adjacent to the communication device may be used as the adjacent area of the communication device.
  • communication devices can interact with each other to assist in determining the first type of communication device, so that the communication device can determine whether it can act as the first type of communication device by comparison, thereby Voluntary use as a first-type communication device increases randomness or limitation, thereby reducing the possibility of multiple communication devices acting as the first type communication device at the same time, and avoiding the situation where multiple communication devices act as the first type communication device at the same time, and It is realized that one communication device is determined from the plurality of communication devices to serve as the first type communication device.
  • each functional block may be implemented by one device that is physically and/or logically combined, or two or more devices that are physically and/or logically separated may be directly and/or indirectly (e.g. Connected by wired and/or wireless) to achieve by the above-mentioned multiple devices.
  • a device such as a first communication device, a second communication device, or a flying user terminal, etc.
  • a device may function as a computer that performs the processing of the wireless communication method of the present disclosure.
  • FIG. 8 is a schematic diagram of the hardware structure of the involved device 800 according to an embodiment of the present disclosure.
  • the above-mentioned device 800 may be configured as a computer device that physically includes a processor 810, a memory 820, a memory 830, a communication device 840, an input device 850, an output device 860, a bus 870, and the like.
  • the word “device” may be replaced with a circuit, a device, a unit, or the like.
  • the hardware structure of the user terminal and the base station may include one or more devices shown in the figure, or may not include some devices.
  • processor 810 For example, only one processor 810 is shown, but it may be multiple processors.
  • processing may be executed by one processor, or may be executed simultaneously, sequentially, or by other methods by more than one processor.
  • processor 810 may be installed by more than one chip.
  • the functions of the device 800 are realized, for example, by reading predetermined software (programs) into hardware such as the processor 810 and the memory 820 to cause the processor 810 to perform calculations and control the communication performed by the communication device 840 And control the reading and/or writing of data in the memory 820 and the memory 830.
  • predetermined software programs
  • the processor 810 operates an operating system to control the entire computer, for example.
  • the processor 810 may be composed of a central processing unit (CPU, Central Processing Unit) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like.
  • CPU Central Processing Unit
  • the above determination unit, adjustment unit, etc. may be implemented by the processor 810.
  • the processor 810 reads out programs (program codes), software modules, data, etc. from the memory 830 and/or the communication device 840 to the memory 820, and executes various processes according to them.
  • programs program codes
  • software modules software modules
  • data etc.
  • the program a program that causes a computer to execute at least a part of the operations described in the above embodiments can be adopted.
  • the determination unit of the user terminal 500 may be implemented by a control program stored in the memory 820 and operated by the processor 810, and other functional blocks may be implemented in the same manner.
  • the memory 820 is a computer-readable recording medium, such as read-only memory (ROM, Read Only Memory), programmable read-only memory (EPROM, Erasable Programmable ROM), electrically programmable read-only memory (EEPROM, Electrically EPROM), At least one of random access memory (RAM, Random Access Memory) and other suitable storage media.
  • ROM read-only memory
  • EPROM programmable read-only memory
  • EEPROM electrically programmable read-only memory
  • RAM Random Access Memory
  • RAM Random Access Memory
  • the memory 820 may also be referred to as a register, cache, main memory (main storage device), or the like.
  • the memory 820 may store executable programs (program codes), software modules, and the like for implementing the method according to an embodiment of the present disclosure.
  • the memory 830 is a computer-readable recording medium.
  • it can be a flexible disk (floppy), a floppy (registered trademark) disk (floppy disk), a magneto-optical disk (for example, a CD-ROM (Compact Disc ROM), etc.), Digital versatile disc, Blu-ray (registered trademark) disc), removable disk, hard drive, smart card, flash memory device (for example, card, stick, key driver), magnetic stripe, database , At least one of a server and other suitable storage media.
  • the memory 830 may also be referred to as an auxiliary storage device.
  • the communication device 840 is hardware (transmitting and receiving equipment) for performing communication between computers via a wired and/or wireless network, and is also referred to as a network device, a network controller, a network card, and a communication module, for example.
  • the communication device 840 may include, for example, frequency division duplex (FDD) and/or time division duplex (TDD), and may include high-frequency switches, duplexers, filters, and frequency synthesizers.
  • FDD frequency division duplex
  • TDD time division duplex
  • the above-mentioned sending unit, receiving unit, etc. may be implemented by the communication device 840.
  • the input device 850 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside.
  • the output device 860 is an output device that performs output to the outside (for example, a display, a speaker, a light emitting diode (LED, Light, Diode) lamp, etc.).
  • the input device 850 and the output device 860 may be an integrated structure (for example, a touch panel).
  • bus 870 for communicating information.
  • the bus 870 may be composed of a single bus, or may be composed of different buses between devices.
  • the base station and the user terminal may include a microprocessor, a digital signal processor (DSP, Digital Processor), an application-specific integrated circuit (ASIC, Application Specific Integrated Circuit), a programmable logic device (PLD, Programmable Logic Device), and a field device.
  • DSP digital signal processor
  • ASIC Application Specific Integrated Circuit
  • PLD programmable logic device
  • FPGA Field, Programmable, Array
  • the processor 810 may be installed by at least one of these hardware.
  • the channel and/or symbol may also be a signal (signaling).
  • the signal may also be a message.
  • the reference signal may also be referred to as RS (Reference Signal) for short, and may also be called a pilot (Pilot), a pilot signal, etc. according to applicable standards.
  • a component carrier CC can also be called a cell, a frequency carrier, a carrier frequency, and so on.
  • the information, parameters, etc. described in this specification may be represented by absolute values, relative values to predetermined values, or other corresponding information.
  • radio resources can be indicated by a prescribed index.
  • formulas and the like using these parameters may be different from those explicitly disclosed in this specification.
  • information, signals, etc. may be output from the upper layer to the lower layer, and/or from the lower layer to the upper layer.
  • Information, signals, etc. can be input or output via multiple network nodes.
  • Input or output information, signals, etc. can be stored in a specific place (for example, memory), or can be managed through the management table. Input or output information, signals, etc. can be overwritten, updated, or supplemented. The output information, signals, etc. can be deleted. The input information, signals, etc. can be sent to other devices.
  • a specific place for example, memory
  • Input or output information, signals, etc. can be overwritten, updated, or supplemented.
  • the output information, signals, etc. can be deleted.
  • the input information, signals, etc. can be sent to other devices.
  • the notification of information is not limited to the method/embodiment described in this specification, and may be performed by other methods.
  • the notification of information can be through physical layer signaling (eg, downlink control information (DCI, Downlink Control Information), uplink control information (UCI, Uplink Control Information)), upper layer signaling (eg, radio resource control (RRC, Radio Resource Control) signaling, broadcast information (Master Information Block (MIB, Master Information Block), System Information Block (SIB, System Information Block), etc.), media access control (MAC, Medium Access Control) signaling ), other signals or a combination of them.
  • DCI downlink control information
  • UCI Uplink Control Information
  • RRC Radio Resource Control
  • RRC Radio Resource Control
  • MIB Master Information Block
  • SIB System Information Block
  • MAC Medium Access Control
  • the physical layer signaling may also be referred to as L1/L2 (Layer 1/Layer 2) control information (L1/L2 control signal), L1 control information (L1 control signal), or the like.
  • RRC signaling may also be referred to as an RRC message.
  • RRC RRC Connection Setup
  • RRC Connection Reconfiguration RRC Connection Reconfiguration
  • MAC CE MAC control unit
  • the notification of the predetermined information is not limited to explicit, but may be implicitly (for example, by not notification of the predetermined information or notification of other information).
  • the determination can be made by a value represented by 1 bit (0 or 1), by a true or false value (Boolean) represented by true (true) or false (false), or by comparison of values ( For example, comparison with a predetermined value).
  • software, commands, information, etc. can be sent or received via a transmission medium.
  • a transmission medium For example, when using wired technology (coaxial cable, optical cable, twisted pair, digital subscriber line (DSL, Digital Subscriber Line), etc.) and/or wireless technology (infrared, microwave, etc.) to send from websites, servers, or other remote resources.
  • wired technology coaxial cable, optical cable, twisted pair, digital subscriber line (DSL, Digital Subscriber Line), etc.
  • wireless technology infrared, microwave, etc.
  • system and "network” used in this manual can be used interchangeably.
  • Base station BS
  • radio base station eNB
  • gNB gNodeB
  • cell gNodeB
  • cell group femtocells
  • carrier femtocells
  • the base station can accommodate one or more (e.g., three) cells (also called sectors).
  • a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also pass through the base station subsystem (for example, indoor small base stations (RFH remote head (RRH, Remote Radio (Head))) to provide communication services.
  • the term "cell” or “sector” refers to a part or the whole of the coverage area of the base station and/or base station subsystem performing communication services in the coverage.
  • mobile station Mobile
  • user terminal user terminal
  • UE User Equipment
  • terminal mobile stations
  • Mobile stations are sometimes referred to by those skilled in the art as user stations, mobile units, user units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile user stations, access terminals, mobile terminals, wireless A terminal, a remote terminal, a handheld, a user agent, a mobile client, a client, or some other appropriate terminology.
  • the wireless base station in this specification may be replaced with a user terminal.
  • the methods/embodiments of the present disclosure may also be applied.
  • the functions possessed by the first communication device or the second communication device in the above-mentioned device 800 may be regarded as the functions possessed by the user terminal.
  • the words "upstream” and "downstream” can also be replaced with "side”.
  • the uplink channel may be replaced with a side channel.
  • the user terminal in this specification can also be replaced with a wireless base station.
  • the functions possessed by the user terminal described above can be regarded as the functions possessed by the first communication device or the second communication device.
  • the specific operation performed by the base station may be performed by its upper node depending on the situation.
  • various operations performed for communication with the terminal can pass through the base station, one or more networks other than the base station Nodes (for example, mobility management entity (MME, Mobility Management Entity), service gateway (S-GW, Serving-Gateway), etc., but not limited thereto), or a combination thereof may be used.
  • MME mobility management entity
  • S-GW Service gateway
  • Serving-Gateway Serving-Gateway
  • Each mode/embodiment described in this specification can be used alone or in combination, and can also be switched during execution.
  • the order can be changed.
  • various step units are given in an exemplary order, and are not limited to the specific order given.
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • LTE-B Long Term Evolution
  • LTE-Beyond Super third generation mobile communication system
  • SUPER 3G advanced international mobile communication
  • IMT-Advanced fourth generation mobile communication system
  • 4G, 4th generation mobile communication system fifth generation mobile communication system
  • 5G, 5th generation mobile communication system communication
  • future radio access FX, Future generation radio access
  • GSM registered trademark
  • GSM registered trademark
  • CDMA3000 code division multiple access 3000
  • UMB Ultra Mobile
  • IEEE 920.11 Wi-Fi (registered trademark)
  • IEEE 920.16 WiMAX
  • any reference to units using names such as "first” and “second” used in this specification does not comprehensively limit the number or order of these units. These names can be used in this specification as a convenient method to distinguish two or more units. Therefore, the reference of the first unit and the second unit does not mean that only two units can be used or that the first unit must precede the second unit in several forms.
  • determining used in this specification sometimes includes various actions. For example, regarding “judgment (determination)", calculation, calculation, processing, deriving, investigating, and looking up (such as tables, databases, or other (Search in data structure), confirmation (ascertaining), etc. are regarded as “judgment (determination)”. In addition, regarding “judgment (determination)”, receiving (for example, receiving information), transmitting (for example, sending information), input (input), output (output), accessing (for example Accessing the data in the memory) is regarded as “judging (determining)”. In addition, regarding “judgment (determination)”, resolving, selecting, choosing, establishing, comparing, etc. can also be regarded as “judging (determination)”. That is to say, regarding "judgment (determination)", several actions can be regarded as “judgment (determination)”.
  • connection refers to any direct or indirect connection or combination between two or more units. This includes the case where there are one or more intermediate units between two units that are “connected” or “coupled” to each other.
  • the combination or connection between the units may be physical, logical, or a combination of the two. For example, "connect” may be replaced with "access”.
  • two units can be considered as using one or more wires, cables, and/or printed electrical connections, and as several non-limiting and non-exhaustive examples, by using radio frequency regions , The electromagnetic energy of the wavelength in the microwave area, and/or the light (both visible light and invisible light) area, etc., are “connected” or “combined” with each other.

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Abstract

本公开了提供了一种无线通信方法及设备，其中由通信设备执行的方法包括：获取第一参数，以便所述通信设备根据所述第一参数确定其是否能够充当第一类型通信设备，所述第一类型通信设备用于控制第二类型通信设备；以及至少根据所述第一参数确定所述通信设备是否能够充当第一类型通信设备。

Description

无线通信方法及设备 技术领域
本公开涉及无线通信领域，并且更具体地涉及一种无线通信方法及设备。
背景技术
为了提高通信系统的频谱利用率，已经提出了设备到设备(Device-to-Device，D2D)通信的技术。在D2D通信中，数据可直接在用户终端之间传输，而不需要通过基站等网络侧设备，从而减小了时延，增加了网络容量，提高了频谱利用率等。
另外，为了提升交通系统的安全性和智能化，已经提出了车联网(Vehicle To Everything，V2X)。V2X要求车辆之间的通信时延较低、网络容量较大等，而由于D2D技术在时延、网络容量等方面具有很大的优势，因此，D2D技术被作为V2X的基础支撑技术。
针对V2X，目前已经提出了传输资源的多种分配模式，例如基于基站调度的资源分配模式、用户终端(在V2X中，可以是车或者路边单元)自主选择的资源分配模式或者基于用户终端调度的资源分配模式。在基于用户终端调度的资源分配模式中，多个用户终端可以组成一个用户终端组，并且该多个用户终端中的一用户终端充当头-用户终端(header-UE)以及该多个用户终端中的剩余用户终端充当成员-用户终端(member-UE)，其中，头-用户终端用于控制或调度成员-用户终端，例如，头-用户终端可以为成员-用户终端分配资源。
用户终端可以自愿充当头-用户终端。因此，可能会存在多个用户终端自愿充当头-用户终端的情形，从而发生冲突。
发明内容
根据本公开的一个方面，提供了一种用户终端，包括：控制单元，被设定为获取第一参数，以便所述用户终端根据所述第一参数确定其是否能够充当第一类型用户终端，所述第一类型用户终端用于控制第二类型用户终端；所述控制单元还被设定为至少根据所述第一参数确定所述用户终端是否能够充当第一类型用户终端。
根据本公开的另一方面，提供了一种由用户终端执行的方法，所述方法包括：获取第一参数，以便所述用户终端根据所述第一参数确定其是否能够充当第一类型用户终端，所述第一类型用户终端用于控制第二类型用户终端；以及至少根据所述第一参数确定所述用户终端是否能够充当第一类型用户终端。
根据本公开的一个示例，其中所述第一参数是所述用户终端充当第一类型用户终端的概率。
根据本公开的一个示例，其中所述至少根据所述第一参数确定所述用户终端是否能够充当第一类型用户终端包括：确定所述用户终端充当第一类型用户终端的实际概率；当所述实际概率大于所述概率时，确定所述用户终端能够充当第一类型用户终端。
根据本公开的一个示例，其中所述第一参数是所述用户终端充当第一类型用户终端的退避时间。
根据本公开的一个示例，其中所述至少根据所述第一参数确定所述用户终端是否能够充当第一类型用户终端包括：当所述退避时间缩减为零时，确定所述用户终端能够充当第一类型用户终端。
根据本公开的一个示例，其中所述至少根据所述第一参数确定所述用户终端是否能够充当第一类型用户终端包括：当所述退避时间缩减为零之前所述用户终端接收到第一类型用户终端的通知信息时，确定所述用户终端不能充当第一类型用户终端。
根据本公开的一个示例，其中当至少根据所述第一参数确定所述用户终端能够充当第一类型用户终端时，所述方法还包括：向所述用户终端的邻近用户终端发送通知信息，以通知所述邻近用户终端所述用户终端充当第一类型用户终端。
根据本公开的一个示例，上述方法还包括：从其他用户终端接收第二参数；其中所述至少根据所述第一参数确定所述用户终端是否能够充当第一类型用户终端包括：根据所述第一参数和所述第二参数确定所述用户终端是否能够充当第一类型用户终端。
根据本公开的一个示例，其中所述第一参数是所述用户终端的属性信息，所述第二参数是所述其他用户终端的属性信息。
根据本公开的一个示例，其中当所述用户终端的属性信息包括所述用 户终端的标识信息时，所述根据所述第一参数和所述第二参数确定所述用户终端是否能够充当第一类型用户终端包括：当所述用户终端的标识值大于所述其他用户终端的标识值时，或者当所述用户终端的标识值小于所述其他用户终端的标识值时，确定所述用户终端能够充当第一类型用户终端。
根据本公开的一个示例，其中所述根据所述第一参数和所述第二参数确定所述用户终端是否能够充当第一类型用户终端包括：根据所述用户终端的属性信息确定所述用户终端充当第一类型用户终端的优先级，以及根据所述其他用户终端的属性信息确定所述其他用户终端充当第一类型用户终端的优先级；以及当所述用户终端充当第一类型用户终端的优先级大于所述其他用户终端充当第一类型用户终端的优先级时，确定所述用户终端能够充当第一类型用户终端。
附图说明
通过结合附图对本公开实施例进行更详细的描述，本公开的上述以及其它目的、特征和优势将变得更加明显。附图用来提供对本公开实施例的进一步理解，并且构成说明书的一部分，与本公开实施例一起用于解释本公开，并不构成对本公开的限制。在附图中，相同的参考标号通常代表相同部件或步骤。
图1是可在其中应用本公开的实施例的无线通信系统的示意图。
图2是根据本公开第一实施例的由通信设备执行的方法的流程图。
图3是根据本公开第一实施例的第二实现方式的确定通信设备是否能够充当第一类型通信设备的示意图。
图4是根据本公开第二实施例的由通信设备执行的方法的流程图。
图5是根据本公开第二实施例的确定通信设备是否能够充当第一类型通信设备的示意图。
图6是根据本公开第一实施例的通信设备的结构示意图。
图7是根据本公开第二实施例的通信设备的结构示意图。
图8是根据本公开的实施例的所涉及的设备的硬件结构的示意图。
具体实施方式
为了使得本公开的目的、技术方案和优点更为明显，下面将参照附图详细描述根据本公开的示例实施例。为了使得本公开的目的、技术方案和优点更为明显，下面将参照附图详细描述根据本公开的示例实施例。在附图中，相同的参考标号自始至终表示相同的元件。应当理解：这里描述的实施例仅仅是说明性的，而不应被解释为限制本公开的范围。此外，这里所述的用户终端可以包括各种类型的用户终端(User Equipment，UE)，例如移动终端(或称为移动台)或者固定终端，然而，为方便起见，在下文中有时候可互换地使用UE和移动终端。
首先，参照图1来描述可在其中应用本公开的实施例的无线通信系统。该无线通信系统可以是5G系统，也可以是任何其他类型的无线通信系统，比如长期演进(Long Term Evolution,LTE)系统或者LTE-A(advanced)系统等。在下文中，以5G系统为例来描述本公开的实施例，但应当认识到，以下描述也可以适用于其他类型的无线通信系统。
如图1所示，无线通信系统100可以包括第一类型用户终端110和第二类型用户终端120、130、140。第一类型用户终端110和第二类型用户终端120、130、140可以组成一个用户终端组，并且第一类型用户终端110用于控制或调度该用户终端组内的第二类型用户终端120、130、140。例如，如图1中的虚线所示，第一类型用户终端110可以分别向第二类型用户终端120、130、140发送调度信息。由于第一类型用户终端110具有控制或调度该用户终端组内的第二类型用户终端120、130、140的能力，因此，第一类型用户终端110也可以称为头-用户终端、控制用户终端、调度用户终端、簇头(cluster header)、本地管理器(local manager)、或者任何具有控制或调度能力的用户终端。相应地，第二类型用户终端120、130、140可以称为成员-用户终端、受控用户终端、被调度的用户终端、簇成员、或者任何被控制或被调度的用户终端。
此外，该用户终端组内的用户终端之间可以进行数据传输。例如，如图1中的实线所示，第一类型用户终端110、第二类型用户终端120、第二类型用户终端130和第二类型用户终端140之间可以进行数据传输。
需要认识到，尽管在图1中示出了一个第一类型用户终端和三个第二类型用户终端，但这只是示意性的，该无线通信系统可以包括多个第一类型用户终端，和/或更少或更多个第二类型用户终端，相应地，该无线通信系统可 以包括多个用户终端组。
在通信系统中，用户终端可以自愿充当第一类型用户终端，因此，在某一时刻，可能会存在多个用户终端自愿充当第一类型用户终端的情形。本公开的目的在于提供一种无线通信方法及设备，以尽可能避免多个用户终端自愿充当第一类型用户终端的情形，以及当多个用户终端自愿充当第一类型用户终端时从多个用户终端确定第一类型用户终端。
在本公开的实施例中，用户终端可以是被(预)设定为驻留(camp on)在针对与基于用户终端调度的资源分配模式相对应的媒体接入控制(Medium Access Control，MAC)结构而(预)设定的资源池的用户终端。在本公开中，可以将这些用户终端称为候选的第一类型用户终端。进一步地，候选的第一类型用户终端还可以是不属于任何用户终端组(例如，不与任何用户终端组相关联或者不与任何第一类型用户终端相关联等)，并且暂未充当第一类型用户终端的用户终端。
需要认识到，尽管上面描述了第一类型用户终端和第二类型用户终端均为用户终端，但本公开不限于此。第一类型用户终端和第二类型用户终端还可以是网络侧的通信设备，例如基站。例如，第一类型用户终端可以是基站而第二类型用户终端可以是用户终端。因此，可以将术语“用户终端”、“第一类型用户终端”和“第二类型用户终端”替换为“通信设备”、“第一类型通信设备”和“第二类型通信设备”。下面将以术语“通信设备”、“第一类型通信设备”和“第二类型通信设备”为例来描述本公开的实施例。
下面将参照图2来描述根据本公开第一实施例的由通信设备执行的方法。图2是根据本公开第一实施例的由通信设备执行的方法200的流程图。如图2所示，在步骤S201中，通信设备获取第一参数，以便所述通信设备根据所述第一参数确定其是否能够充当第一类型通信设备，其中所述第一类型通信设备用于控制第二类型通信设备。然后，在步骤S202中，通信设备至少根据所述第一参数确定所述通信设备是否能够充当第一类型通信设备。
根据本公开第一实施例的第一实现方式，第一参数可以是通信设备充当第一类型通信设备的概率(或也可称为概率值)。
根据第一实现方式的一个示例，该概率可以是诸如3GPP等通信标准协议规范定义的概率。例如，该概率可以是10％，20％或50％。
根据第一实现方式的另一示例，该概率还可以是(预)设定的概率，例 如该概率可以被写入通信设备的SIM卡或者在通信设备接入基站后由基站设定的概率。例如，该概率可以是10％，20％或50％。
根据第一实现方式的另一示例，该概率可以是从诸如3GPP等通信标准协议规范定义的或(预)设定的概率范围中选择的一个概率，例如通信设备可以从该概率范围中随机选择一个概率作为该通信设备充当第一类型通信设备的概率。例如，概率范围可以为20％～60％，通信设备可以从该概率范围中选择40％作为该通信设备充当第一类型通信设备的概率。
根据第一实现方式的另一示例，该概率可以基于预设规则来获取。该预设规则可以是用于该通信设备的预设函数，例如效用函数。效用函数的输入可以是通信设备的属性信息，以及效用函数的输出可以与该概率相关联。
这里提到的通信设备的属性信息可以包括通信设备的标识信息，例如，通信设备的ID、服务集标识(Service Set Identifier，SSID)或无线网络临时标识(Radio Network Tempory Identity，RNTI)等中的一个或多个。
此外，通信设备的属性信息还可以包括通信设备的运动信息，例如，通信设备的平均速度或最大速度等中的一个或多个。
此外，通信设备的属性信息还可以包括通信设备的位置信息，例如，通信设备的地理位置(比如绝对位置或区域ID等)、通信设备与不属于任何通信设备组的邻近通信设备的相对位置、或通信设备与不属于任何通信设备组的邻近通信设备的平均距离等中的一个或多个。在本公开中，邻近通信设备可以是通信设备通过对另一通信设备进行信号测量而确定的，例如，通信设备对另一通信设备进行信号测量，以获得测量结果(例如，信号接收质量)；当该测量结果大于第一阈值时，该另一通信设备可以作为通信设备的邻近通信设备。此外，邻近通信设备还可以是根据通信设备和另一通信设备的位置而确定的，例如当通信设备和另一通信设备之间的直线距离小于预定阈值时，该另一通信设备可以作为通信设备的邻近通信设备。
此外，通信设备的属性信息还可以包括通信设备对不属于任何通信设备组的邻近通信设备的测量/感知结果。测量/感知结果例如可以是参考信号接收功率(Reference Signal Receiving Power，RSRP)、接收信号强度指示(Received Signal Strength Indication，RSSI)、参考信号接收质量(Reference Signal Receiving Quality，RSRQ)、信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)或信噪比(Signal to Noise Ratio，SNR)等中的一个 或多个。
此外，通信设备的属性信息还可以包括不属于任何通信设备组的邻近通信设备的数量信息，例如，在预定时间段的、不属于任何通信设备组的邻近通信设备的数量。
此外，通信设备的属性信息还可以包括通信设备充当第一类型通信设备的优先级信息。例如，可以基于第一类型通信设备的确定方式来定义优先级。例如，当通过高层信令确定第一类型通信设备时，通信设备充当第一类型通信设备的优先级可以设置为1；当通过(预)设定第一类型通信设备时，通信设备充当第一类型通信设备的优先级可以设置为2；当自动选择第一类型通信设备时，通信设备充当第一类型通信设备的优先级可以设置为3。
此外，通信设备的属性信息还可以包括通信设备的种类信息，例如通信设备的种类标识符，诸如通信设备属于大巴、卡车或小汽车等的种类标识符。
需要认识到，虽然上面的示例描述了通信设备的属性信息可以包括通信设备的标识信息、通信设备的运动信息、通信设备的位置信息、通信设备对不属于任何通信设备组的邻近通信设备的测量/感知结果、不属于任何通信设备组的邻近通信设备的数量信息、通信设备充当第一类型通信设备的优先级信息或通信设备的种类信息，但本公开不限于此。根据其他示例，通信设备的属性信息还可以包括通信设备的任何其他的属性信息。
在第一实现方式中，当通信设备充当第一类型通信设备的概率基于效用函数来获取时，通信设备充当第一类型通信设备的概率可以与效用函数的输出具有对应关系。因此，当确定了效用函数的输出之后，通过二者的对应关系可以获取通信设备充当第一类型通信设备的概率。
具体地，可以首先根据下面的公式(1)确定效用函数的输出：
U＝αf(υ)+b·f(SNR)      公式(1)
其中，α,b表示权重参数，υ表示通信设备的速度，f(υ)表示关于通信设备的速度的函数，SNR表示通信设备对邻近通信设备测量的信噪比，f(SNR)表示关于通信设备的SNR的函数。需要认识到，虽然在上面的公式(1)中，只使用了通信设备的速度和对邻近通信设备测量的信噪比作为效用函数的输入，但本公开不限于此。根据其他示例，通信设备的其他一个或多个属性也可以作为效用函数的输入。例如，通信设备的标识、通信设备的种类等也可以作为效用函数的输入。
然后，可以根据效用函数的输出与通信设备充当第一类型通信设备的概率之间的对应关系，确定通信设备充当第一类型通信设备的概率。例如，可以预先定义效用函数的输出与通信设备充当第一类型通信设备的概率之间的对应关系，因此，可以通过效用函数的输出和该对应关系来确定通信设备充当第一类型通信设备的概率。
另外，效用函数的输出与通信设备充当第一类型通信设备的概率之间的对应关系可以以表的形式存储在通信设备中，因此，通信设备可以在确定效用函数的输出后通过查表来确定其充当第一类型通信设备的概率。例如，下面的表1示出了效用函数的输出与通信设备充当第一类型通信设备的概率之间的对应关系的一个示例。
效用函数的输出 通信设备充当第一类型通信设备的概率
x1 10％
x2 20％
x3 50％
表1效用函数的输出与通信设备充当第一类型通信设备的概率之间的对应关系的示例
在表1中，当效用函数的输出为x1时，通信设备充当第一类型通信设备的概率为10％；当效用函数的输出为x2时，通信设备充当第一类型通信设备的概率为20％；以及当效用函数的输出为x3时，通信设备充当第一类型通信设备的概率为50％。
又例如，下面的表2示出了效用函数的输出与通信设备充当第一类型通信设备的概率之间的对应关系的另一示例。
效用函数的输出 通信设备充当第一类型通信设备的概率
[x1,x2) 10％
[x2,x3) 20％
[x3,x4] 50％
表2效用函数的输出与通信设备充当第一类型通信设备的概率之间的对应关系的另一示例
在表2中，当效用函数的输出落在区间[x1,x2)(也可以称为范围x1～x2时，通信设备充当第一类型通信设备的概率为10％；当效用函数的输出落在区间[x2,x3)时，通信设备充当第一类型通信设备的概率为20％；以及当效用 函数的输出落在区间[x3,x4]时，通信设备充当第一类型通信设备的概率为50％。
虽然上面描述了当通信设备充当第一类型通信设备的概率基于效用函数来获取时，可以通过通信设备充当第一类型通信设备的概率与效用函数的输出所具有的对应关系来确定通信设备充当第一类型通信设备的概率，但本公开不限于此。根据其他示例，当通信设备充当第一类型通信设备的概率基于效用函数来获取时，可以通过效用函数直接计算通信设备充当第一类型通信设备的概率，即效用函数的输出可以是通信设备充当第一类型通信设备的概率。
另外，上面已经描述了获取通信设备充当第一类型通信设备的概率的多种方法。应该理解，对于多个通信设备而言，可以采用同一种获取方法来分别获取各个通信设备充当第一类型通信设备的概率。可替换地，还可以针对不同的通信设备采用不同的获取方法来分别获取各个通信设备充当第一类型通信设备的概率。
需要认识到，除了上面所描述的获取通信设备充当第一类型通信设备的概率的多种方法，本公开还可以包括任何其他获取通信设备充当第一类型通信设备的概率的方法。
此外，在第一实现方式中，通信设备在获取自身充当第一类型通信设备的概率(即步骤S201)之后，在步骤S202中，通信设备至少根据所述第一参数确定所述通信设备是否能够充当第一类型通信设备。具体地，通信设备至少根据所述第一参数确定所述通信设备是否能够充当第一类型通信设备可以包括：确定通信设备充当第一类型通信设备的实际概率；以及当所述实际概率大于或等于步骤S201中获取的概率时，确定该通信设备能够充当第一类型通信设备，当所述实际概率小于步骤S201中获取的概率时，确定该通信设备不能充当第一类型通信设备。
根据第一实现方式的一个示例，上面所描述的通信设备的属性信息可能会过期，因此，当确定通信设备是否能够充当第一类型通信设备时，通信设备可以根据实时的属性信息确定其充当第一类型通信设备的实际概率。例如，通信设备可以根据当前的速度确定其充当第一类型通信设备的实际概率。例如，当通信设备的速度为高速(例如大于120公里/小时)时，通信设备充当第一类型通信设备的实际概率可以为50％；当通信设备的速度为中速(例如 大于60公里/小时且小于120公里/小时)时，通信设备充当第一类型通信设备的实际概率可以为70％；当通信设备的速度为低速(例如小于60公里/小时)时，通信设备充当第一类型通信设备的实际概率可以为30％。此外，通信设备还可以根据当前的信道状况确定其充当第一类型通信设备的实际概率。例如，当通信设备的信道状况较好的，通信设备充当第一类型通信设备的实际概率可以较高，诸如70％；当通信设备的信道状况较差的，通信设备充当第一类型通信设备的实际概率可以较低，诸如30％。
此外，在第一实现方式中，当在步骤S202中确定通信设备能够充当第一类型通信设备时，方法200还可以包括：向所述通信设备的邻近通信设备发送通知信息，以通知所述邻近通信设备所述通信设备充当第一类型通信设备。
例如，通信设备可以通过诸如物理层信令、副链控制信息(Sidelink Control Information，SCI)、下行链路控制信息(Downlink Control Information，DCI)的低层信令发送通知信息。又例如，通信设备可以通过诸如无线资源控制(Radio Resource Control，RRC)信令或媒体接入控制(Media Access Control，MAC)控制元素(Control Element，CE)的高层信令发送通知信息。
此外，通信设备可以通过物理副链控制信道(Pysical Sidelink Control Channel，PSCCH)/物理副链共享信道(Pysical Sidelink Share Channel，PSSCH)发送通知信息。在这种情形下，所使用的资源可以根据副链资源分配机制确定。此外，通信设备还可以通过副链同步信号(Sidelink Synchronization Signal SLSS)/物理副链广播信道(Physical Sidelink Broadcast Channel，PSBCH)发送通知信息。在这种情形下，可以使用SLSS/PSBCH传输时机来发送通知信息。
应该理解，虽然在上面的示例中仅描述了通信设备向其邻近通信设备发送通知信息，但是本公开不限于此。根据其他示例，通信设备还可以向邻近通信设备发送其他信息。例如，通信设备可以使用SLSS/PSBCH传输时机来发送同步信号、发现协助信号等。
此外，在第一实现方式中，当在步骤S202中确定通信设备不能充当第一类型通信设备时，方法200还可以包括：检测所述通信设备的邻近区域中是否存在第一类型通信设备。在本公开中，通信设备的邻近通信设备所在的区域可以作为通信设备的邻近区域。例如，邻近区域可以是包含通信设备的 一个或多个邻近通信设备的区域。
例如，通信设备可以通过是否接收到第一类型通信设备的通知信息来检测其邻近区域中是否存在第一类型通信设备。又例如，通信设备可以通过检测发现信号来检测其邻近区域中是否存在第一类型通信设备。
根据本公开第一实施例的第二实现方式，第一参数可以是通信设备充当第一类型通信设备的退避时间。
根据第二实现方式的一个示例，该退避时间可以是诸如3GPP等通信标准协议规范定义的退避时间。例如，该退避时间可以是10ms,50ms或100ms。
根据第二实现方式的另一示例，该退避时间还可以是(预)设定的退避时间，例如该退避时间可以被写入通信设备的SIM卡或者在通信设备接入基站后由基站设定的退避时间。例如，该退避时间可以是10ms,50ms或100ms。
根据第二实现方式的另一示例，该退避时间可以是从诸如3GPP等通信标准协议规范定义的或(预)设定的退避时间范围中选择的一个退避时间，例如通信设备可以从该退避时间范围中随机选择一个退避时间作为该通信设备充当第一类型通信设备的退避时间。例如，退避时间范围可以为10ms～100ms，通信设备可以从该退避时间范围中选择40ms作为该通信设备充当第一类型通信设备的退避时间。
根据第二实现方式的另一示例，该退避时间可以基于预设规则来获取。该预设规则可以是预设函数，例如效用函数。效用函数的输入可以是通信设备的属性信息，以及效用函数的输出可以与该退避时间相关联。这里提到的通信设备的属性信息与第一实现方式中提到的通信设备的属性信息是类似的，在此不再赘述。
在第二实现方式中，当通信设备充当第一类型通信设备的退避时间基于效用函数来获取时，通信设备充当第一类型通信设备的退避时间可以与效用函数的输出具有对应关系。因此，当确定了效用函数的输出之后，通过二者的对应关系可以获取通信设备充当第一类型通信设备的退避时间。
具体地，可以首先根据上面的公式(1)确定效用函数的输出。然后，可以根据效用函数的输出与通信设备充当第一类型通信设备的退避时间之间的对应关系，确定通信设备充当第一类型通信设备的退避时间。例如，可 以预先定义效用函数的输出与通信设备充当第一类型通信设备的退避时间之间的对应关系。
另外，效用函数的输出与通信设备充当第一类型通信设备的退避时间之间的对应关系可以以表的形式存储在通信设备中，因此，通信设备可以在确定效用函数的输出后通过查表来确定其充当第一类型通信设备的退避时间。例如，下面的表3示出了效用函数的输出与通信设备充当第一类型通信设备的退避时间之间的对应关系的一个示例。
效用函数的输出 通信设备充当第一类型通信设备的退避时间
x1 100ms
x2 50ms
x3 10ms
表3效用函数的输出与通信设备充当第一类型通信设备的退避时间之间的对应关系的示例
在表3中，当效用函数的输出为x1时，通信设备充当第一类型通信设备的退避时间为100ms；当效用函数的输出为x2时，通信设备充当第一类型通信设备的退避时间为50ms；以及当效用函数的输出为x3时，通信设备充当第一类型通信设备的退避时间为10ms。
又例如，下面的表4示出了效用函数的输出与通信设备充当第一类型通信设备的退避时间之间的对应关系的另一示例。
效用函数的输出 通信设备充当第一类型通信设备的退避时间
[x1,x2) 100ms
[x2,x3) 50ms
[x3,x4] 10ms
表4效用函数的输出与通信设备充当第一类型通信设备的退避时间之间的对应关系的另一示例
在表4中，当效用函数的输出落在区间[x1,x2)时，通信设备充当第一类型通信设备的退避时间为100ms；当效用函数的输出落在区间[x2,x3)时，通信设备充当第一类型通信设备的退避时间为50ms；以及当效用函数的输出落在区间[x3,x4]时，通信设备充当第一类型通信设备的退避时间为10ms。
虽然上面描述了当通信设备充当第一类型通信设备的退避时间基于效用函数来获取时，可以通过通信设备充当第一类型通信设备的退避时间与效 用函数的输出所具有的对应关系来确定通信设备充当第一类型通信设备的退避时间，但本公开不限于此。根据其他示例，当通信设备充当第一类型通信设备的退避时间基于效用函数来获取时，可以通过效用函数直接计算通信设备充当第一类型通信设备的退避时间，即效用函数的输出可以是通信设备充当第一类型通信设备的退避时间。
另外，上面已经描述了获取通信设备充当第一类型通信设备的退避时间的多种方法。应该理解，对于多个通信设备而言，可以采用同一种获取方法来分别获取各个通信设备充当第一类型通信设备的退避时间。可替换地，还可以针对不同的通信设备采用不同的获取方法来分别获取各个通信设备充当第一类型通信设备的退避时间。
此外，需要认识到，除了上面所描述的获取通信设备充当第一类型通信设备的退避时间的多种方法，本公开还可以包括任何其他获取通信设备充当第一类型通信设备的退避时间的方法。
此外，在第二实现方式中，通信设备在获取自身充当第一类型通信设备的退避时间(即步骤S201)之后，在步骤S202中，通信设备至少根据所述第一参数确定所述通信设备是否能够充当第一类型通信设备。具体地，通信设备至少根据所述第一参数确定所述通信设备是否能够充当第一类型通信设备可以包括：当所述退避时间缩减为零时，确定所述通信设备能够充当第一类型通信设备。在该实现方式中，当通信设备自愿充当第一类型通信设备时，该通信设备不能立刻充当第一类型通信设备，而是经过退避时间所对应的时间段之后，才可能充当第一类型通信设备。
根据第二实现方式的一个示例，当通信设备自愿充当第一类型通信设备时，开始对通信设备的退避时间进行缩减。例如，可以按照定义/(预)设定的粒度对退避时间进行缩减，诸如可以每隔一个粒度缩减特定步长。这里提到的粒度可以是特定时间段(单位可以为秒或毫秒)、传输时间间隔(Transmission Time Interval，TTI)、码元、时隙、小时隙(mini-slot)、子帧、帧、SLSS/PSBCH传输时机(transmission occasion)。下面以粒度为TTI为例描述如何对通信设备的退避时间进行缩减。
例如，在退避时间为100ms且特定步长为20ms的情形下，经过第一个TTI之后，退避时间进行缩减并且缩减为80ms；经过第二个TTI之后，退避时间继续缩减并且缩减为60ms；经过第三个TTI之后，退避时间继续 缩减并且缩减为40ms；经过第四个TTI之后，退避时间继续缩减并且缩减为20ms；以及经过第五个TTI之后，退避时间继续缩减并且缩减为0。
此外，在第二实现方式中，通信设备在获取自身充当第一类型通信设备的退避时间(即步骤S201)之后，在步骤S202中，通信设备至少根据所述第一参数确定所述通信设备是否能够充当第一类型通信设备可以包括：当所述退避时间缩减为零之前所述通信设备接收到第一类型通信设备的通知信息时，确定所述通信设备不能充当第一类型通信设备。正如下面将描述的，当某一通信设备能够作为第一类型通信设备时，其可以将自身充当第一类型通信设备的消息通知给其他通信设备。因此，对于退避时间缩减为零之前，在退避时间开始缩减和缩减为零之间接收到第一类型通信设备的通知信息时，说明已有其他通信设备充当第一类型通信设备，因此，该通信设备不能充当第一类型通信设备。
下面参照图3来描述根据第二实现方式确定通信设备是否能够充当第一类型通信设备的一个具体示例。图3是根据本公开第一实施例的第二实现方式的确定通信设备是否能够充当第一类型通信设备的示意图。如图3所示，假设第一通信设备(UE 1)、第二通信设备(UE 2)、第三通信设备(UE 3)和第四通信设备(UE 4)均自愿充当第一类型通信设备，并且第一通信设备、第二通信设备、第三通信设备和第四通信设备各自具有退避时间。例如，第四通信设备的退避时间t4<第一通信设备的退避时间t1<第三通信设备的退避时间t3<第二通信设备的退避时间t2。
对于第四通信设备，在步骤S201中，获取第四通信设备充当第一类型通信设备的退避时间t4；以及在步骤S202中，当退避时间t4缩减为零时，第四通信设备能够充当第一类型通信设备。因此，在步骤S202之后，第四通信设备充当第一类型通信设备，并可以向第一、二、三通信设备通知自身充当第一类型通信设备的信息。
对于第一通信设备，在步骤S201中，获取第一通信设备充当第一类型通信设备的退避时间t1；以及在步骤S202中，当退避时间t1缩减为零且在退避时间t1缩减为零之前接收到第四通信设备的通知信息时，第一通信设备不能充当第一类型通信设备。因此，在步骤S202之后，第一通信设备不再尝试充当第一类型通信设备，而是可以充当第二类型通信设备。第二、三通信设备和第一通信设备是类似的，在此不再赘述。
此外，在第二实现方式中，根据第二实现方式的一个示例，当在步骤S202中确定通信设备能够充当第一类型通信设备时，方法200还可以包括：向所述通信设备的邻近通信设备发送通知信息，以通知所述邻近通信设备所述通信设备充当第一类型通信设备。此外，根据第二实现方式的另一示例，当在步骤S202中确定通信设备能够充当第一类型通信设备时，方法200还可以包括：检测所述通信设备的邻近区域中是否存在第一类型通信设备。这与第一实现方式是类似的，在此不再赘述。
通过本公开的第一实施例，可以给通信设备设置充当第一类型通信设备的概率或退避时间，以对通信设备自愿充当第一类型通信设备增加随机性或限制，从而降低了多个通信设备同时充当第一类型通信设备的可能性，尽可能避免了多个通信设备同时充当第一类型通信设备的情形，以及实现了从该多个通信设备中确定一个通信设备来充当第一类型通信设备。
下面将参照图4来描述根据本公开第二实施例的由通信设备执行的方法。图4是根据本公开第二实施例的由通信设备执行的方法400的流程图。如图4所示，在步骤S401中，通信设备获取第一参数，以便所述通信设备根据所述第一参数确定其是否能够充当第一类型通信设备，其中所述第一类型通信设备用于控制第二类型通信设备。例如，第一参数可以是通信设备的属性信息。
这里提到的通信设备的属性信息可以包括通信设备的标识信息，例如，通信设备的ID、服务集标识(Service Set Identifier，SSID)或无线网络临时标识(Radio Network Tempory Identity，RNTI)等中的一个或多个。
此外，通信设备的属性信息还可以包括通信设备的运动信息，例如，通信设备的平均速度或最大速度等中的一个或多个。
此外，通信设备的属性信息还可以包括通信设备的位置信息，例如，通信设备的地理位置(比如绝对位置或区域ID等)、通信设备与不属于任何通信设备组的邻近通信设备的相对位置、或通信设备与不属于任何通信设备组的邻近通信设备的平均距离等中的一个或多个。在本公开中，邻近通信设备可以是通信设备通过对另一通信设备进行信号测量而确定的，例如，通信设备对另一通信设备进行信号测量，以获得测量结果(例如，信号接收质量)；当该测量结果大于第一阈值时，该另一通信设备可以作为通信设备的邻近通 信设备。此外，邻近通信设备还可以是根据通信设备和另一通信设备的位置而确定的，例如当通信设备和另一通信设备之间的直线距离小于预定阈值时，该另一通信设备可以作为通信设备的邻近通信设备。
此外，通信设备的属性信息还可以包括通信设备对不属于任何通信设备组的邻近通信设备的测量/感知结果。测量/感知结果例如可以是参考信号接收功率(Reference Signal Receiving Power，RSRP)、接收信号强度指示(Received Signal Strength Indication，RSSI)、参考信号接收质量(Reference Signal Receiving Quality，RSRQ)、信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)或信噪比(Signal to Noise Ratio，SNR)等中的一个或多个。
此外，通信设备的属性信息还可以包括不属于任何通信设备组的邻近通信设备的数量信息，例如，在预定时间段的、不属于任何通信设备组的邻近通信设备的数量信息。
此外，通信设备的属性信息还可以包括通信设备充当第一类型通信设备的优先级信息。例如，可以基于第一类型通信设备的确定方式来定义优先级。例如，当通过高层信令确定第一类型通信设备时，通信设备充当第一类型通信设备的优先级可以设置为1；当通过(预)设定第一类型通信设备时，通信设备充当第一类型通信设备的优先级可以设置为2；当自动选择第一类型通信设备时，通信设备充当第一类型通信设备的优先级可以设置为3。
此外，通信设备的属性信息还可以包括通信设备的种类信息，例如通信设备的种类标识符，诸如通信设备属于大巴、卡车或小汽车等的种类标识符。
需要认识到，虽然上面的示例描述了通信设备的属性信息可以包括通信设备的标识信息、通信设备的运动信息、通信设备的位置信息、通信设备对不属于任何通信设备组的邻近通信设备的测量/感知结果、不属于任何通信设备组的邻近通信设备的数量信息、通信设备充当第一类型通信设备的优先级信息或通信设备的种类信息，但本公开不限于此。根据其他示例，通信设备的属性信息还可以包括通信设备的任何其他的属性信息。
根据本公开第二实施例的一个示例，通信设备的属性信息可以存储在通信设备的存储器中。相应地，在步骤S401中，通信设备获取第一参数可以包括通信设备从自身的存储器读取自身的属性信息。在该示例中，在通信设备获取自身的属性信息之后，方法400还可以包括：通信设备将自身的属性 信息发送给其他通信设备，以便其他通信设备判断其是否能够充当第一类型通信设备。
然后，在步骤S402中，通信设备从其他通信设备接收第二参数。可替换地，步骤S402也可以在步骤S401之前执行，或者与步骤S401同时执行。第二参数例如可以是其他通信设备的属性信息。其他通信设备的属性信息和上面所描述的通信设备的属性信息是类似的，在此不再赘述。
根据本公开第二实施例的一个示例，当其他通信设备自愿充当第一类型通信设备时，其他通信设备可以将自身的属性信息发送给通信设备。例如，其他通信设备可以按照定义/(预)设定的包发送数量/持续时间以及包间隔来广播自身的属性信息。相应地，通信设备可以按照定义/(预)设定的包发送数量/持续时间以及包间隔从其他通信设备接收其他通信设备的属性信息。
此外，根据本公开第二实施例的另一示例，无论其他通信设备是否自愿充当第一类型通信设备，其他通信设备都可以周期性地发送自身的属性信息。例如，其他通信设备可以周期性地广播自身的属性信息。相应地，通信设备可以周期性地从其他通信设备接收其他通信设备的属性信息。
此外，根据本公开第二实施例的另一示例，其他通信设备可以通过诸如物理层信令、副链控制信息(Sidelink Control Information，SCI)、下行链路控制信息(Downlink Control Information，DCI)的低层信令发送自身的属性信息。可替换地，其他通信设备可以通过诸如无线资源控制(Radio Resource Control，RRC)信令或媒体接入控制(Media Access Control，MAC)控制元素(Control Element，CE)的高层信令发送自身的属性信息。相应地，通信设备可以通过低层信令或高层信令从其他通信设备接收其他通信设备的属性信息。
此外，根据本公开第二实施例的另一示例，其他通信设备可以通过物理副链控制信道(Pysical Sidelink Control Channel，PSCCH)/物理副链共享信道(Pysical Sidelink Share Channel，PSSCH)发送自身的属性信息。此外，其他通信设备还可以通过副链同步信号(Sidelink Synchronization Signal SLSS)/物理副链广播信道(Physical Sidelink Broadcast Channel，PSBCH)发送自身的属性信息。此外，其他通信设备还可以通过其他副链信道发送自身的属性信息。相应地，通信设备可以通过PSCCH/PSSCH、SLSS/PSBCH或其他副链信道从其他通信设备接收其他通信设备的属性信息。
此外，根据本公开第二实施例的另一示例，在通信设备自愿充当第一类型通信设备之前，该通信设备可以在定义/(预)设定的时间段内监测从其他通信设备接收的第二参数。这样可以保证通信设备和其他通信设备有充分的时间交换双方的参数，以便从通信设备和其他通信设备中确定最合适的第一类型通信设备。
然后，在步骤S403中，通信设备根据第一参数和第二参数确定所述通信设备是否能够充当第一类型通信设备。例如，通信设备可以根据第一参数和第二参数，以及预设规则来确定所述通信设备是否能够充当第一类型通信设备。预设规则例如可以是选择属性最大或最小的通信设备充当第一类型通信设备。
根据本公开第二实施例的一个示例，当通信设备的属性信息包括通信设备的标识信息且其他通信设备的属性信息包括其他通信设备的标识信息时，通信设备根据所述第一参数和所述第二参数确定所述通信设备是否能够充当第一类型通信设备可以包括：当所述通信设备的标识值大于所述其他通信设备的标识值时，确定所述通信设备能够充当第一类型通信设备。可替换地，当通信设备的属性信息包括通信设备的标识信息时，通信设备根据所述第一参数和所述第二参数确定所述通信设备是否能够充当第一类型通信设备可以包括：当所述通信设备的标识值小于所述其他通信设备的标识值时，确定所述通信设备能够充当第一类型通信设备。
根据本公开第二实施例的另一示例，当通信设备的属性信息包括通信设备充当第一类型通信设备的优先权信息且其他通信设备的属性信息包括其他通信设备充当第一类型通信设备的优先权信息时，通信设备根据所述第一参数和所述第二参数确定所述通信设备是否能够充当第一类型通信设备可以包括：当所述通信设备的优先级大于所述其他通信设备的优先级时，确定所述通信设备能够充当第一类型通信设备。
根据本公开第二实施例的另一示例，通信设备根据所述第一参数和所述第二参数确定所述通信设备是否能够充当第一类型通信设备可以包括：根据所述通信设备的属性信息确定所述通信设备充当第一类型通信设备的优先级，以及根据所述其他通信设备的属性信息确定所述其他通信设备充当第一类型通信设备的优先级；以及当所述通信设备充当第一类型通信设备的优先级大于所述其他通信设备充当第一类型通信设备的优先级时，确定所述通信 设备能够充当第一类型通信设备。
在该示例中，根据通信设备的属性信息确定该通信设备充当第一类型通信设备的优先级可以是根据通信设备的属性信息和用于该通信设备的效用函数来确定该通信设备充当第一类型通信设备的优先级。效用函数的输入可以是通信设备的属性信息，以及效用函数的输出可以与该优先级相关联。例如，通信设备充当第一类型通信设备的优先级可以与效用函数的输出具有对应关系。因此，当确定了效用函数的输出之后，通过二者的对应关系可以获取通信设备充当第一类型通信设备的优先级。
具体地，可以首先根据下面的公式(2)确定效用函数的输出：
U＝α·f(υ)+b·f(SNR)          公式(2)
其中，α,b表示权重参数，υ表示通信设备的速度，f(υ)表示关于通信设备的速度的函数，SNR表示通信设备对邻近通信设备测量的信噪比，f(SNR)表示关于通信设备的SNR的函数。需要认识到，虽然在上面的公式(2)中，只使用了通信设备的速度和对邻近通信设备测量的信噪比作为效用函数的输入，但本公开不限于此。根据其他示例，通信设备的其他一个或多个属性也可以作为效用函数的输入。例如，通信设备的标识、通信设备的种类等也可以作为效用函数的输入。
然后，可以根据效用函数的输出与通信设备充当第一类型通信设备的优先级之间的对应关系，确定通信设备充当第一类型通信设备的优先级。例如，可以预先定义效用函数的输出与通信设备充当第一类型通信设备的优先级之间的对应关系。
另外，效用函数的输出与通信设备充当第一类型通信设备的优先级之间的对应关系可以以表的形式存储在通信设备中，因此，通信设备可以在确定效用函数的输出后通过查表来确定其充当第一类型通信设备的优先级。例如，下面的表5示出了效用函数的输出与通信设备充当第一类型通信设备的优先级之间的对应关系的一个示例。
效用函数的输出 通信设备充当第一类型通信设备的优先级
x1 1
x2 2
x3 3
表5效用函数的输出与通信设备充当第一类型通信设备的优先级之间的对应 关系的示例
在表5中，当效用函数的输出为x1时，通信设备充当第一类型通信设备的优先级为1；当效用函数的输出为x2时，通信设备充当第一类型通信设备的优先级为2；以及当效用函数的输出为x3时，通信设备充当第一类型通信设备的优先级为3。
又例如，下面的表6示出了效用函数的输出与通信设备充当第一类型通信设备的优先级之间的对应关系的另一示例。
效用函数的输出 通信设备充当第一类型通信设备的优先级
[x1,x2) 1
[x2,x3) 2
[x3,x4] 3
表6效用函数的输出与通信设备充当第一类型通信设备的优先级之间的对应关系的另一示例
在表6中，当效用函数的输出落在区间[x1,x2)时，通信设备充当第一类型通信设备的优先级为1；当效用函数的输出落在区间[x2,x3)时，通信设备充当第一类型通信设备的优先级为2；以及当效用函数的输出落在区间[x3,x4]时，通信设备充当第一类型通信设备的优先级为3。
虽然上面描述了通过通信设备充当第一类型通信设备的优先级与效用函数的输出所具有的对应关系来确定通信设备充当第一类型通信设备的优先级，但本公开不限于此。根据其他示例，可以通过效用函数直接计算通信设备充当第一类型通信设备的优先级，即效用函数的输出可以是通信设备充当第一类型通信设备的优先级。
另外，需要认识到，虽然上面描述了选择属性中的标识或优先级最大的通信设备充当第一类型通信设备的示例，但是本公开不限于此。根据其他示例，还可以选择其他属性最大或最小的通信设备充当第一类型通信设备。例如，可以选择邻近通信设备的数量最大的通信设备充当第一类型通信设备。又例如，可以选择与邻近通信设备的平均距离最小的通信设备充当第一类型通信设备。
此外，当在步骤S403中确定通信设备能够充当第一类型通信设备时，方法400还可以包括：向所述通信设备的邻近通信设备发送通知信息，以通知所述邻近通信设备所述通信设备充当第一类型通信设备。
例如，通信设备可以通过诸如物理层信令、副链控制信息(Sidelink Control Information，SCI)、下行链路控制信息(Downlink Control Information，DCI)的低层信令发送通知信息。又例如，通信设备可以通过诸如无线资源控制(Radio Resource Control，RRC)信令或媒体接入控制(Media Access Control，MAC)控制元素(Control Element，CE)的高层信令发送通知信息。
此外，通信设备可以通过物理副链控制信道(Pysical Sidelink Control Channel，PSCCH)/物理副链共享信道(Pysical Sidelink Share Channel，PSSCH)发送通知信息。在这种情形下，所使用的资源可以根据副链资源分配机制确定。此外，通信设备还可以通过副链同步信号(Sidelink Synchronization Signal SLSS)/物理副链广播信道(Physical Sidelink Broadcast Channel，PSBCH)发送通知信息。在这种情形下，可以使用SLSS/PSBCH传输时机来发送通知信息。
应该理解，虽然在上面的示例中仅描述了通信设备向其邻近通信设备发送通知信息，但是本公开不限于此。根据其他示例，通信设备还可以向邻近通信设备发送其他信息。例如，通信设备可以使用SLSS/PSBCH传输时机来发送同步信号、发现协助信号等。
此外，当在步骤S403中确定通信设备不能充当第一类型通信设备时，方法400还可以包括：检测所述通信设备的邻近区域中是否存在第一类型通信设备。在本公开中，通信设备的邻近通信设备所在的区域可以作为通信设备的邻近区域。
例如，通信设备可以通过是否接收到第一类型通信设备的通知信息来检测其邻近区域中是否存在第一类型通信设备。又例如，通信设备可以通过检测发现信号来检测其邻近区域中是否存在第一类型通信设备。
下面参照图5来描述根据本公开第二实施例确定通信设备是否能够充当第一类型通信设备的一个具体示例。图5是根据本公开第二实施例的确定通信设备是否能够充当第一类型通信设备的示意图。如图5所示，假设第一通信设备(UE 1)、第二通信设备(UE 2)、第三通信设备(UE 3)和第四通信设备(UE 4)均自愿充当第一类型通信设备，并且第四通信设备执行方法400。在步骤S401中，第四通信设备获取自身的属性信息；在步骤S402中，第四通信设备从第一、二、三通信设备获取第一、二、三通信设备的属性信息；以及在步骤S403中，第四通信设备根据自身的属性信息以及一、二、 三通信设备的属性信息来确定自身是否能够充当第一类型通信设备。当在步骤S403中确定第四通信设备能够充当第一类型通信设备，则第四通信设备充当第一类型通信设备，以及第四通信设备可以向第一、二、三通信设备发送通知信息，以通知第一、二、三通信设备通知自身充当第一类型通信设备的信息。相应地，第一、二、三通信设备在接收到第四通信设备的通知信息之后，可以不再尝试充当第一类型通信设备，而是可以充当第二类型通信设备。
通过本公开的第二实施例，通信设备之间可以交互用于协助确定第一类型通信设备的信息，以便通信设备通过比较而确定自身是否能够充当第一类型通信设备，从而对通信设备自愿充当第一类型通信设备增加随机性或限制，进而降低了多个通信设备同时充当第一类型通信设备的可能性，尽可能避免了多个通信设备同时充当第一类型通信设备的情形，以及实现了从该多个通信设备中确定一个通信设备来充当第一类型通信设备。
根据本公开的第三实施例，当通信设备自愿充当第一类型通信设备时，通信设备充当第一类型通信设备。此外，当通信设备充当第一类型通信设备之后，通信设备可以向其的邻近通信设备发送通知信息，以通知所述邻近通信设备所述通信设备充当第一类型通信设备。相应地，通信设备的邻近通信设备在接收到第一类型通信设备的通知信息时，不再尝试充当第一类型通信设备，而是可以充当第二类型通信设备。
在第三实施例中，在某一时刻，可能存在多个通信设备同时充当第一类型通信设备的情形。此时，可以通过其他机制来解决这一情形引起的问题。例如，可以通过资源分配机制、通信设备组的重组规则等来解决这一情形引起的问题。
下面，参照图6来描述根据本公开第一实施例的通信设备。图6是根据本公开第一实施例的通信设备600的结构示意图。由于通信设备600的功能与在上文中参照图2描述的方法的细节相同，因此在这里为了简单起见，省略对相同内容的详细描述。如图6所示，通信设备600包括：控制单元610，被设定为获取第一参数，以便所述通信设备根据所述第一参数确定其是否能够充当第一类型通信设备，所述第一类型通信设备用于控制第二类型通信设 备；以及所述控制单元610还被设定为至少根据所述第一参数确定所述通信设备是否能够充当第一类型通信设备。除了这个单元以外，通信设备600还可以包括其他部件，然而，由于这些部件与本公开实施例的内容无关，因此在这里省略其图示和描述。
根据本公开第一实施例的第一实现方式，第一参数可以是通信设备充当第一类型通信设备的概率(或也可称为概率值)。
根据第一实现方式的一个示例，该概率可以是诸如3GPP等通信标准协议规范定义的概率。
根据第一实现方式的另一示例，该概率还可以是(预)设定的概率，例如该概率可以被写入通信设备的SIM卡或者在通信设备接入基站后由基站设定的概率。
根据第一实现方式的另一示例，该概率可以是从诸如3GPP等通信标准协议规范定义的或(预)设定的概率范围中选择的一个概率，例如通信设备可以从该概率范围中随机选择一个概率作为该通信设备充当第一类型通信设备的概率。
根据第一实现方式的另一示例，该概率可以基于预设规则来获取。该预设规则可以是用于该通信设备的预设函数，例如效用函数。效用函数的输入可以是通信设备的属性信息，以及效用函数的输出可以与该概率相关联。
在第一实现方式中，当通信设备充当第一类型通信设备的概率基于效用函数来获取时，通信设备充当第一类型通信设备的概率可以与效用函数的输出具有对应关系。因此，当确定了效用函数的输出之后，通过二者的对应关系可以获取通信设备充当第一类型通信设备的概率。
具体地，可以首先根据上面的公式(1)确定效用函数的输出。然后，可以根据效用函数的输出与通信设备充当第一类型通信设备的概率之间的对应关系，确定通信设备充当第一类型通信设备的概率。例如，可以预先定义效用函数的输出与通信设备充当第一类型通信设备的概率之间的对应关系，因此，可以通过效用函数的输出和该对应关系来确定通信设备充当第一类型通信设备的概率。
另外，效用函数的输出与通信设备充当第一类型通信设备的概率之间的对应关系可以以表的形式存储在通信设备中，因此，通信设备可以在确定效用函数的输出后通过查表来确定其充当第一类型通信设备的概率。
此外，在第一实现方式中，控制单元610在获取自身充当第一类型通信设备的概率之后，控制单元610至少根据所述第一参数确定所述通信设备是否能够充当第一类型通信设备。具体地，控制单元610可以确定通信设备充当第一类型通信设备的实际概率；以及当所述实际概率大于或等于所获取的概率时，确定该通信设备能够充当第一类型通信设备，当所述实际概率小于所获取的概率时，确定该通信设备不能充当第一类型通信设备。
根据第一实现方式的一个示例，上面所描述的通信设备的属性信息可能会过期，因此，当确定通信设备是否能够充当第一类型通信设备时，控制单元610可以根据实时的属性信息确定其充当第一类型通信设备的实际概率。
此外，在第一实现方式中，当控制单元610确定通信设备能够充当第一类型通信设备时，通信设备600还可以包括：发送单元620，其被设定为向所述通信设备的邻近通信设备发送通知信息，以通知所述邻近通信设备所述通信设备充当第一类型通信设备。
例如，通信设备可以通过诸如物理层信令、副链控制信息(Sidelink Control Information，SCI)、下行链路控制信息(Downlink Control Information，DCI)的低层信令发送通知信息。又例如，通信设备可以通过诸如无线资源控制(Radio Resource Control，RRC)信令或媒体接入控制(Media Access Control，MAC)控制元素(Control Element，CE)的高层信令发送通知信息。
此外，通信设备可以通过物理副链控制信道(Pysical Sidelink Control Channel，PSCCH)/物理副链共享信道(Pysical Sidelink Share Channel，PSSCH)发送通知信息。在这种情形下，所使用的资源可以根据副链资源分配机制确定。此外，通信设备还可以通过副链同步信号(Sidelink Synchronization Signal SLSS)/物理副链广播信道(Physical Sidelink Broadcast Channel，PSBCH)发送通知信息。在这种情形下，可以使用SLSS/PSBCH传输时机来发送通知信息。
此外，在第一实现方式中，当控制单元610确定通信设备不能充当第一类型通信设备时，控制单元610还可以检测所述通信设备的邻近区域中是否存在第一类型通信设备。在本公开中，通信设备的邻近通信设备所在的区域可以作为通信设备的邻近区域。例如，邻近区域可以是包含通信设备的一个或多个邻近通信设备的区域。
例如，通信设备可以通过是否接收到第一类型通信设备的通知信息来检 测其邻近区域中是否存在第一类型通信设备。又例如，通信设备可以通过检测发现信号来检测其邻近区域中是否存在第一类型通信设备。
根据本公开第一实施例的第二实现方式，第一参数可以是通信设备充当第一类型通信设备的退避时间。
根据第二实现方式的一个示例，该退避时间可以是诸如3GPP等通信标准协议规范定义的退避时间。
根据第二实现方式的另一示例，该退避时间还可以是(预)设定的退避时间，例如该退避时间可以被写入通信设备的SIM卡或者在通信设备接入基站后由基站设定的退避时间。
根据第二实现方式的另一示例，该退避时间可以是从诸如3GPP等通信标准协议规范定义的或(预)设定的退避时间范围中选择的一个退避时间，例如通信设备可以从该退避时间范围中随机选择一个退避时间作为该通信设备充当第一类型通信设备的退避时间。
根据第二实现方式的另一示例，该退避时间可以基于预设规则来获取。该预设规则可以是预设函数，例如效用函数。效用函数的输入可以是通信设备的属性信息，以及效用函数的输出可以与该退避时间相关联。这里提到的通信设备的属性信息与第一实现方式中提到的通信设备的属性信息是类似的，在此不再赘述。
在第二实现方式中，当通信设备充当第一类型通信设备的退避时间基于效用函数来获取时，通信设备充当第一类型通信设备的退避时间可以与效用函数的输出具有对应关系。因此，当确定了效用函数的输出之后，通过二者的对应关系可以获取通信设备充当第一类型通信设备的退避时间。
具体地，可以首先根据上面的公式(1)确定效用函数的输出。然后，可以根据效用函数的输出与通信设备充当第一类型通信设备的退避时间之间的对应关系，确定通信设备充当第一类型通信设备的退避时间。例如，可以预先定义效用函数的输出与通信设备充当第一类型通信设备的退避时间之间的对应关系。
另外，效用函数的输出与通信设备充当第一类型通信设备的退避时间之间的对应关系可以以表的形式存储在通信设备中，因此，通信设备可以在确定效用函数的输出后通过查表来确定其充当第一类型通信设备的退避时间。
此外，在第二实现方式中，控制单元610在获取自身充当第一类型通信 设备的退避时间之后，控制单元610至少根据所述第一参数确定所述通信设备是否能够充当第一类型通信设备。具体地，控制单元610可以当所述退避时间缩减为零时，确定所述通信设备能够充当第一类型通信设备。在该实现方式中，当通信设备自愿充当第一类型通信设备时，该通信设备不能立刻充当第一类型通信设备，而是经过退避时间所对应的时间段之后，才可能充当第一类型通信设备。
根据第二实现方式的一个示例，当通信设备自愿充当第一类型通信设备时，开始对通信设备的退避时间进行缩减。例如，可以按照定义/(预)设定的粒度对退避时间进行缩减，诸如可以每隔一个粒度缩减特定步长。这里提到的粒度可以是特定时间段(单位可以为秒或毫秒)、传输时间间隔(Transmission Time Interval，TTI)、码元、时隙、小时隙(mini-slot)、子帧、帧、SLSS/PSBCH传输时机(transmission occasion)。下面以粒度为TTI为例描述如何对通信设备的退避时间进行缩减。
此外，在第二实现方式中，控制单元610在获取自身充当第一类型通信设备的退避时间之后，控制单元610至少根据所述第一参数确定所述通信设备是否能够充当第一类型通信设备。具体地，控制单元610还可以当所述退避时间缩减为零之前所述通信设备接收到第一类型通信设备的通知信息时，确定所述通信设备不能充当第一类型通信设备。正如下面将描述的，当某一通信设备能够作为第一类型通信设备时，其可以将自身充当第一类型通信设备的消息通知给其他通信设备。因此，对于退避时间缩减为零之前，在退避时间开始缩减和缩减为零之间接收到第一类型通信设备的通知信息时，说明已有其他通信设备充当第一类型通信设备，因此，该通信设备不能充当第一类型通信设备。
此外，在第二实现方式中，根据第二实现方式的一个示例，当控制单元610确定通信设备能够充当第一类型通信设备时，通信设备600还可以包括：发送单元620，其被设定为向所述通信设备的邻近通信设备发送通知信息，以通知所述邻近通信设备所述通信设备充当第一类型通信设备。此外，根据第二实现方式的另一示例，当控制单元610确定通信设备能够充当第一类型通信设备时，控制单元610还可以检测所述通信设备的邻近区域中是否存在第一类型通信设备。这与第一实现方式是类似的，在此不再赘述。
通过根据本公开第一实施例的通信设备，可以给通信设备设置充当第一 类型通信设备的概率或退避时间，以对通信设备自愿充当第一类型通信设备增加随机性或限制，从而降低了多个通信设备同时充当第一类型通信设备的可能性，尽可能避免了多个通信设备同时充当第一类型通信设备的情形，以及实现了从该多个通信设备中确定一个通信设备来充当第一类型通信设备。
下面，参照图7来描述根据本公开第二实施例的通信设备。图7是根据本公开第二实施例的通信设备700的结构示意图。由于通信设备700的功能与在上文中参照图4描述的方法的细节相同，因此在这里为了简单起见，省略对相同内容的详细描述。如图7所示，通信设备700包括：控制单元710，被设定为获取第一参数，以便所述通信设备根据所述第一参数确定其是否能够充当第一类型通信设备，所述第一类型通信设备用于控制第二类型通信设备；接收单元720，被设定为从其他通信设备接收第二参数；所述控制单元710还被设定为根据所述第一参数和所述第二参数确定所述通信设备是否能够充当第一类型通信设备。除了这两个单元以外，通信设备700还可以包括其他部件，然而，由于这些部件与本公开实施例的内容无关，因此在这里省略其图示和描述。
根据本公开的一个示例，第一参数可以是通信设备的属性信息。通信设备的属性信息可以存储在通信设备的存储器中。相应地，控制单元710可以包括从自身的存储器读取自身的属性信息。在该示例中，在通信设备获取自身的属性信息之后，通信设备700还可以包括：发送单元(图中未示出)，其被设定为将自身的属性信息发送给其他通信设备，以便其他通信设备判断其是否能够充当第一类型通信设备。
根据本公开的一个示例，第二参数例如可以是其他通信设备的属性信息。其他通信设备的属性信息和上面所描述的通信设备的属性信息是类似的，在此不再赘述。
根据本公开第二实施例的一个示例，当其他通信设备自愿充当第一类型通信设备时，其他通信设备可以将自身的属性信息发送给通信设备。例如，其他通信设备可以按照定义/(预)设定的包发送数量/持续时间以及包间隔来广播自身的属性信息。相应地，接收单元720可以按照定义/(预)设定的包发送数量/持续时间以及包间隔从其他通信设备接收其他通信设备的属性信息。
此外，根据本公开第二实施例的另一示例，无论其他通信设备是否自愿充当第一类型通信设备，其他通信设备都可以周期性地发送自身的属性信息。例如，其他通信设备可以周期性地广播自身的属性信息。相应地，接收单元720可以周期性地从其他通信设备接收其他通信设备的属性信息。
此外，根据本公开第二实施例的另一示例，其他通信设备可以通过诸如物理层信令、副链控制信息(Sidelink Control Information，SCI)、下行链路控制信息(Downlink Control Information，DCI)的低层信令发送自身的属性信息。可替换地，其他通信设备可以通过诸如无线资源控制(Radio Resource Control，RRC)信令或媒体接入控制(Media Access Control，MAC)控制元素(Control Element，CE)的高层信令发送自身的属性信息。相应地，接收单元720可以通过低层信令或高层信令从其他通信设备接收其他通信设备的属性信息。
此外，根据本公开第二实施例的另一示例，其他通信设备可以通过物理副链控制信道(Pysical Sidelink Control Channel，PSCCH)/物理副链共享信道(Pysical Sidelink Share Channel，PSSCH)发送自身的属性信息。此外，其他通信设备还可以通过副链同步信号(Sidelink Synchronization Signal SLSS)/物理副链广播信道(Physical Sidelink Broadcast Channel，PSBCH)发送自身的属性信息。此外，其他通信设备还可以通过其他副链信道发送自身的属性信息。相应地，接收单元720可以通过PSCCH/PSSCH、SLSS/PSBCH或其他副链信道从其他通信设备接收其他通信设备的属性信息。
此外，根据本公开第二实施例的另一示例，在通信设备自愿充当第一类型通信设备之前，该通信设备可以在定义/(预)设定的时间段内监测从其他通信设备接收的第二参数。这样可以保证通信设备和其他通信设备有充分的时间交换双方的参数，以便从通信设备和其他通信设备中确定最合适的第一类型通信设备。
根据本公开第二实施例的一个示例，控制单元710可以根据第一参数和第二参数，以及预设规则来确定所述通信设备是否能够充当第一类型通信设备。预设规则例如可以是选择属性最大或最小的通信设备充当第一类型通信设备。
根据本公开第二实施例的一个示例，当通信设备的属性信息包括通信设备的标识信息且其他通信设备的属性信息包括其他通信设备的标识信息时， 控制单元710可以当所述通信设备的标识值大于所述其他通信设备的标识值时，确定所述通信设备能够充当第一类型通信设备。可替换地，当通信设备的属性信息包括通信设备的标识信息时，控制单元710可以当所述通信设备的标识值小于所述其他通信设备的标识值时，确定所述通信设备能够充当第一类型通信设备。
根据本公开第二实施例的另一示例，当通信设备的属性信息包括通信设备充当第一类型通信设备的优先权信息且其他通信设备的属性信息包括其他通信设备充当第一类型通信设备的优先权信息时，控制单元710可以当所述通信设备的优先级大于所述其他通信设备的优先级时，确定所述通信设备能够充当第一类型通信设备。
根据本公开第二实施例的另一示例，控制单元710可以根据所述通信设备的属性信息确定所述通信设备充当第一类型通信设备的优先级，以及根据所述其他通信设备的属性信息确定所述其他通信设备充当第一类型通信设备的优先级；以及当所述通信设备充当第一类型通信设备的优先级大于所述其他通信设备充当第一类型通信设备的优先级时，确定所述通信设备能够充当第一类型通信设备。
在该示例中，根据通信设备的属性信息确定该通信设备充当第一类型通信设备的优先级可以是根据通信设备的属性信息和用于该通信设备的效用函数来确定该通信设备充当第一类型通信设备的优先级。效用函数的输入可以是通信设备的属性信息，以及效用函数的输出可以与该优先级相关联。例如，通信设备充当第一类型通信设备的优先级可以与效用函数的输出具有对应关系。因此，当确定了效用函数的输出之后，通过二者的对应关系可以获取通信设备充当第一类型通信设备的优先级。
具体地，可以首先根据上面的公式(2)确定效用函数的输出。然后，可以根据效用函数的输出与通信设备充当第一类型通信设备的优先级之间的对应关系，确定通信设备充当第一类型通信设备的优先级。例如，可以预先定义效用函数的输出与通信设备充当第一类型通信设备的优先级之间的对应关系。
另外，效用函数的输出与通信设备充当第一类型通信设备的优先级之间的对应关系可以以表的形式存储在通信设备中，因此，通信设备可以在确定效用函数的输出后通过查表来确定其充当第一类型通信设备的优先级。
此外，发送单元还可以向所述通信设备的邻近通信设备发送通知信息，以通知所述邻近通信设备所述通信设备充当第一类型通信设备。
此外，当控制单元710确定通信设备不能充当第一类型通信设备时，控制单元710还可以检测所述通信设备的邻近区域中是否存在第一类型通信设备。在本公开中，通信设备的邻近通信设备所在的区域可以作为通信设备的邻近区域。
通过本公开第二实施例的通信设备，通信设备之间可以交互用于协助确定第一类型通信设备的信息，以便通信设备通过比较而确定自身是否能够充当第一类型通信设备，从而对通信设备自愿充当第一类型通信设备增加随机性或限制，进而降低了多个通信设备同时充当第一类型通信设备的可能性，尽可能避免了多个通信设备同时充当第一类型通信设备的情形，以及实现了从该多个通信设备中确定一个通信设备来充当第一类型通信设备。
<硬件结构>
另外，上述实施方式的说明中使用的框图示出了以功能为单位的块。这些功能块(结构单元)通过硬件和/或软件的任意组合来实现。此外，各功能块的实现手段并不特别限定。即，各功能块可以通过在物理上和/或逻辑上相结合的一个装置来实现，也可以将在物理上和/或逻辑上相分离的两个以上装置直接地和/或间接地(例如通过有线和/或无线)连接从而通过上述多个装置来实现。
例如，本公开的一个实施例的设备(比如第一通信设备、第二通信设备或飞行用户终端等)可以作为执行本公开的无线通信方法的处理的计算机来发挥功能。图8是根据本公开的实施例的所涉及的设备800的硬件结构的示意图。上述的设备800可以作为在物理上包括处理器810、内存820、存储器830、通信装置840、输入装置850、输出装置860、总线870等的计算机装置来构成。
另外，在以下的说明中，“装置”这样的文字也可替换为电路、设备、单元等。用户终端和基站的硬件结构可以包括一个或多个图中所示的各装置，也可以不包括部分装置。
例如，处理器810仅图示出一个，但也可以为多个处理器。此外，可以通过一个处理器来执行处理，也可以通过一个以上的处理器同时、依次、或 采用其它方法来执行处理。另外，处理器810可以通过一个以上的芯片来安装。
设备800的各功能例如通过如下方式实现：通过将规定的软件(程序)读入到处理器810、内存820等硬件上，从而使处理器810进行运算，对由通信装置840进行的通信进行控制，并对内存820和存储器830中的数据的读出和/或写入进行控制。
处理器810例如使操作系统进行工作从而对计算机整体进行控制。处理器810可以由包括与周边装置的接口、控制装置、运算装置、寄存器等的中央处理器(CPU，Central Processing Unit)构成。例如，上述的确定单元、调整单元等可以通过处理器810实现。
此外，处理器810将程序(程序代码)、软件模块、数据等从存储器830和/或通信装置840读出到内存820，并根据它们执行各种处理。作为程序，可以采用使计算机执行在上述实施方式中说明的动作中的至少一部分的程序。例如，用户终端500的确定单元可以通过保存在内存820中并通过处理器810来工作的控制程序来实现，对于其它功能块，也可以同样地来实现。
内存820是计算机可读取记录介质，例如可以由只读存储器(ROM，Read Only Memory)、可编程只读存储器(EPROM，Erasable Programmable ROM)、电可编程只读存储器(EEPROM，Electrically EPROM)、随机存取存储器(RAM，Random Access Memory)、其它适当的存储介质中的至少一个来构成。内存820也可以称为寄存器、高速缓存、主存储器(主存储装置)等。内存820可以保存用于实施本公开的一实施方式所涉及的方法的可执行程序(程序代码)、软件模块等。
存储器830是计算机可读取记录介质，例如可以由软磁盘(flexible disk)、软(注册商标)盘(floppy disk)、磁光盘(例如，只读光盘(CD-ROM(Compact Disc ROM)等)、数字通用光盘、蓝光(Blu-ray，注册商标)光盘)、可移动磁盘、硬盘驱动器、智能卡、闪存设备(例如，卡、棒(stick)、密钥驱动器(key driver))、磁条、数据库、服务器、其它适当的存储介质中的至少一个来构成。存储器830也可以称为辅助存储装置。
通信装置840是用于通过有线和/或无线网络进行计算机间的通信的硬件(发送接收设备)，例如也称为网络设备、网络控制器、网卡、通信模块等。通信装置840为了实现例如频分双工(FDD，Frequency Division Duplex) 和/或时分双工(TDD，Time Division Duplex)，可以包括高频开关、双工器、滤波器、频率合成器等。例如，上述的发送单元、接收单元等可以通过通信装置840来实现。
输入装置850是接受来自外部的输入的输入设备(例如，键盘、鼠标、麦克风、开关、按钮、传感器等)。输出装置860是实施向外部的输出的输出设备(例如，显示器、扬声器、发光二极管(LED，Light Emitting Diode)灯等)。另外，输入装置850和输出装置860也可以为一体的结构(例如触控面板)。
此外，处理器810、内存820等各装置通过用于对信息进行通信的总线870连接。总线870可以由单一的总线构成，也可以由装置间不同的总线构成。
此外，基站和用户终端可以包括微处理器、数字信号处理器(DSP，Digital Signal Processor)、专用集成电路(ASIC，Application Specific Integrated Circuit)、可编程逻辑器件(PLD，Programmable Logic Device)、现场可编程门阵列(FPGA，Field Programmable Gate Array)等硬件，可以通过该硬件来实现各功能块的部分或全部。例如，处理器810可以通过这些硬件中的至少一个来安装。
(变形例)
此外，上面所描述的实施例可以组合使用。另外，关于本说明书中说明的用语和/或对本说明书进行理解所需的用语，可以与具有相同或类似含义的用语进行互换。例如，信道和/或符号也可以为信号(信令)。此外，信号也可以为消息。参考信号也可以简称为RS(Reference Signal)，根据所适用的标准，也可以称为导频(Pilot)、导频信号等。此外，分量载波(CC，Component Carrier)也可以称为小区、频率载波、载波频率等。
此外，本说明书中说明的信息、参数等可以用绝对值来表示，也可以用与规定值的相对值来表示，还可以用对应的其它信息来表示。例如，无线资源可以通过规定的索引来指示。进一步地，使用这些参数的公式等也可以与本说明书中明确公开的不同。
在本说明书中用于参数等的名称在任何方面都并非限定性的。例如，各种各样的信道(物理上行链路控制信道(PUCCH，Physical Uplink Control Channel)、物理下行链路控制信道(PDCCH，Physical Downlink Control  Channel)等)和信息单元可以通过任何适当的名称来识别，因此为这些各种各样的信道和信息单元所分配的各种各样的名称在任何方面都并非限定性的。
本说明书中说明的信息、信号等可以使用各种各样不同技术中的任意一种来表示。例如，在上述的全部说明中可能提及的数据、命令、指令、信息、信号、比特、符号、芯片等可以通过电压、电流、电磁波、磁场或磁性粒子、光场或光子、或者它们的任意组合来表示。
此外，信息、信号等可以从上层向下层、和/或从下层向上层输出。信息、信号等可以经由多个网络节点进行输入或输出。
输入或输出的信息、信号等可以保存在特定的场所(例如内存)，也可以通过管理表进行管理。输入或输出的信息、信号等可以被覆盖、更新或补充。输出的信息、信号等可以被删除。输入的信息、信号等可以被发往其它装置。
信息的通知并不限于本说明书中说明的方式/实施方式，也可以通过其它方法进行。例如，信息的通知可以通过物理层信令(例如，下行链路控制信息(DCI，Downlink Control Information)、上行链路控制信息(UCI，Uplink Control Information))、上层信令(例如，无线资源控制(RRC，Radio Resource Control)信令、广播信息(主信息块(MIB，Master Information Block)、系统信息块(SIB，System Information Block)等)、媒体存取控制(MAC，Medium Access Control)信令)、其它信号或者它们的组合来实施。
另外，物理层信令也可以称为L1/L2(第1层/第2层)控制信息(L1/L2控制信号)、L1控制信息(L1控制信号)等。此外，RRC信令也可以称为RRC消息，例如可以为RRC连接建立(RRC Connection Setup)消息、RRC连接重设定(RRC Connection Reconfiguration)消息等。此外，MAC信令例如可以通过MAC控制单元(MAC CE(Control Element))来通知。
此外，规定信息的通知(例如，“为X”的通知)并不限于显式地进行，也可以隐式地(例如，通过不进行该规定信息的通知，或者通过其它信息的通知)进行。
关于判定，可以通过由1比特表示的值(0或1)来进行，也可以通过由真(true)或假(false)表示的真假值(布尔值)来进行，还可以通过数值的比较(例如与规定值的比较)来进行。
软件无论被称为软件、固件、中间件、微代码、硬件描述语言，还是以其它名称来称呼，都应宽泛地解释为是指命令、命令集、代码、代码段、程序代码、程序、子程序、软件模块、应用程序、软件应用程序、软件包、例程、子例程、对象、可执行文件、执行线程、步骤、功能等。
此外，软件、命令、信息等可以经由传输介质被发送或接收。例如，当使用有线技术(同轴电缆、光缆、双绞线、数字用户线路(DSL，Digital Subscriber Line)等)和/或无线技术(红外线、微波等)从网站、服务器、或其它远程资源发送软件时，这些有线技术和/或无线技术包括在传输介质的定义内。
本说明书中使用的“系统”和“网络”这样的用语可以互换使用。
在本说明书中，“基站(BS，Base Station)”、“无线基站”、“eNB”、“gNB”、“小区”、“扇区”、“小区组”、“载波”以及“分量载波”这样的用语可以互换使用。基站有时也以固定台(fixed station)、NodeB、eNodeB(eNB)、接入点(access point)、发送点、接收点、毫微微小区、小小区等用语来称呼。
基站可以容纳一个或多个(例如三个)小区(也称为扇区)。当基站容纳多个小区时，基站的整个覆盖区域可以划分为多个更小的区域，每个更小的区域也可以通过基站子系统(例如，室内用小型基站(射频拉远头(RRH，Remote Radio Head)))来提供通信服务。“小区”或“扇区”这样的用语是指在该覆盖中进行通信服务的基站和/或基站子系统的覆盖区域的一部分或整体。
在本说明书中，“移动台(MS，Mobile Station)”、“用户终端(user terminal)”、“用户装置(UE，User Equipment)”以及“终端”这样的用语可以互换使用。移动台有时也被本领域技术人员以用户台、移动单元、用户单元、无线单元、远程单元、移动设备、无线设备、无线通信设备、远程设备、移动用户台、接入终端、移动终端、无线终端、远程终端、手持机、用户代理、移动客户端、客户端或者若干其它适当的用语来称呼。
此外，本说明书中的无线基站也可以用用户终端来替换。例如，对于将无线基站和用户终端间的通信替换为多个用户终端间(D2D，Device-to-Device)的通信的结构，也可以应用本公开的各方式/实施方式。此时，可以将上述的设备800中的第一通信设备或第二通信设备所具有的功能当作用户 终端所具有的功能。此外，“上行”和“下行”等文字也可以替换为“侧”。例如，上行信道也可以替换为侧信道。
同样，本说明书中的用户终端也可以用无线基站来替换。此时，可以将上述的用户终端所具有的功能当作第一通信设备或第二通信设备所具有的功能。
在本说明书中，设为通过基站进行的特定动作根据情况有时也通过其上级节点(upper node)来进行。显然，在具有基站的由一个或多个网络节点(network nodes)构成的网络中，为了与终端间的通信而进行的各种各样的动作可以通过基站、除基站之外的一个以上的网络节点(可以考虑例如移动管理实体(MME，Mobility Management Entity)、服务网关(S-GW，Serving-Gateway)等，但不限于此)、或者它们的组合来进行。
本说明书中说明的各方式/实施方式可以单独使用，也可以组合使用，还可以在执行过程中进行切换来使用。此外，本说明书中说明的各方式/实施方式的处理步骤、序列、流程图等只要没有矛盾，就可以更换顺序。例如，关于本说明书中说明的方法，以示例性的顺序给出了各种各样的步骤单元，而并不限定于给出的特定顺序。
本说明书中说明的各方式/实施方式可以应用于利用长期演进(LTE，Long Term Evolution)、高级长期演进(LTE-A，LTE-Advanced)、超越长期演进(LTE-B，LTE-Beyond)、超级第3代移动通信系统(SUPER 3G)、高级国际移动通信(IMT-Advanced)、第4代移动通信系统(4G，4th generation mobile communication system)、第5代移动通信系统(5G，5th generation mobile communication system)、未来无线接入(FRA，Future Radio Access)、新无线接入技术(New-RAT，Radio Access Technology)、新无线(NR，New Radio)、新无线接入(NX，New radio access)、新一代无线接入(FX，Future generation radio access)、全球移动通信系统(GSM(注册商标)，Global System for Mobile communications)、码分多址接入3000(CDMA3000)、超级移动宽带(UMB，Ultra Mobile Broadband)、IEEE 920.11(Wi-Fi(注册商标))、IEEE 920.16(WiMAX(注册商标))、IEEE 920.20、超宽带(UWB，Ultra-WideBand)、蓝牙(Bluetooth(注册商标))、其它适当的无线通信方法的系统和/或基于它们而扩展的下一代系统。
本说明书中使用的“根据”这样的记载，只要未在其它段落中明确记载，则并不意味着“仅根据”。换言之，“根据”这样的记载是指“仅根据”和“至少根据”这两者。
本说明书中使用的对使用“第一”、“第二”等名称的单元的任何参照，均非全面限定这些单元的数量或顺序。这些名称可以作为区别两个以上单元的便利方法而在本说明书中使用。因此，第一单元和第二单元的参照并不意味着仅可采用两个单元或者第一单元必须以若干形式占先于第二单元。
本说明书中使用的“判断(确定)(determining)”这样的用语有时包含多种多样的动作。例如，关于“判断(确定)”，可以将计算(calculating)、推算(computing)、处理(processing)、推导(deriving)、调查(investigating)、搜索(looking up)(例如表、数据库、或其它数据结构中的搜索)、确认(ascertaining)等视为是进行“判断(确定)”。此外，关于“判断(确定)”，也可以将接收(receiving)(例如接收信息)、发送(transmitting)(例如发送信息)、输入(input)、输出(output)、存取(accessing)(例如存取内存中的数据)等视为是进行“判断(确定)”。此外，关于“判断(确定)”，还可以将解决(resolving)、选择(selecting)、选定(choosing)、建立(establishing)、比较(comparing)等视为是进行“判断(确定)”。也就是说，关于“判断(确定)”，可以将若干动作视为是进行“判断(确定)”。
本说明书中使用的“连接的(connected)”、“结合的(coupled)”这样的用语或者它们的任何变形是指两个或两个以上单元间的直接的或间接的任何连接或结合，可以包括以下情况：在相互“连接”或“结合”的两个单元间，存在一个或一个以上的中间单元。单元间的结合或连接可以是物理上的，也可以是逻辑上的，或者还可以是两者的组合。例如，“连接”也可以替换为“接入”。在本说明书中使用时，可以认为两个单元是通过使用一个或一个以上的电线、线缆、和/或印刷电气连接，以及作为若干非限定性且非穷尽性的示例，通过使用具有射频区域、微波区域、和/或光(可见光及不可见光这两者)区域的波长的电磁能等，被相互“连接”或“结合”。
在本说明书或权利要求书中使用“包括(including)”、“包含(comprising)”、以及它们的变形时，这些用语与用语“具备”同样是开放式的。进一步地，在本说明书或权利要求书中使用的用语“或(or)”并非是异或。
以上对本公开进行了详细说明，但对于本领域技术人员而言，显然，本 公开并非限定于本说明书中说明的实施方式。本公开在不脱离由权利要求书的记载所确定的本公开的宗旨和范围的前提下，可以作为修改和变更方式来实施。因此，本说明书的记载是以示例说明为目的，对本公开而言并非具有任何限制性的意义。

Claims (12)

  1. 一种用户终端，包括：
    控制单元，被设定为获取第一参数，以便所述用户终端根据所述第一参数确定其是否能够充当第一类型用户终端，所述第一类型用户终端用于控制第二类型用户终端；
    所述控制单元还被设定为至少根据所述第一参数确定所述用户终端是否能够充当第一类型用户终端。
  2. 如权利要求1所述的用户终端，其中所述第一参数是所述用户终端充当第一类型用户终端的概率。
  3. 如权利要求1所述的用户终端，其中所述第一参数是所述用户终端充当第一类型用户终端的退避时间。
  4. 如权利要求3所述的用户终端，其中所述控制单元还被设定为当所述退避时间缩减为零时，确定所述用户终端能够充当第一类型用户终端。
  5. 如权利要求3所述的用户终端，其中所述控制单元还被设定为当所述退避时间缩减为零之前所述用户终端接收到第一类型用户终端的通知信息时，确定所述用户终端不能充当第一类型用户终端。
  6. 如权利要求1至5任一项所述的用户终端，还包括：
    发送单元，被设定为向所述用户终端的邻近用户终端发送通知信息，以通知所述邻近用户终端所述用户终端充当第一类型用户终端。
  7. 如权利要求1所述的用户终端，还包括：
    接收单元，被设定为从其他用户终端接收第二参数；
    所述控制单元还被设定为根据所述第一参数和所述第二参数确定所述用户终端是否能够充当第一类型用户终端。
  8. 如权利要求7所述的用户终端，其中所述第一参数是所述用户终端的属性信息，所述第二参数是所述其他用户终端的属性信息。
  9. 如权利要求8所述的用户终端，其中当所述用户终端的属性信息包括所述用户终端的标识信息时，所述控制单元还被设定为当所述用户终端的标识值大于所述其他用户终端的标识值时，或者当所述用户终端的标识值小于所述其他用户终端的标识值时，确定所述用户终端能够充当第一类型用户终端。
  10. 如权利要求8所述的用户终端，其中所述控制单元还被设定为根据所述用户终端的属性信息确定所述用户终端充当第一类型用户终端的优先级，以及根据所述其他用户终端的属性信息确定所述其他用户终端充当第一类型用户终端的优先级；以及当所述用户终端充当第一类型用户终端的优先级大于所述其他用户终端充当第一类型用户终端的优先级时，确定所述用户终端能够充当第一类型用户终端。
  11. 一种由用户终端执行的方法，所述方法包括：
    获取第一参数，以便所述用户终端根据所述第一参数确定其是否能够充当第一类型用户终端，所述第一类型用户终端用于控制第二类型用户终端；以及
    至少根据所述第一参数确定所述用户终端是否能够充当第一类型用户终端。
  12. 如权利要求11所述的方法，
    还包括：
    从其他用户终端接收第二参数；
    其中所述至少根据所述第一参数确定所述用户终端是否能够充当第一类型用户终端包括：
    根据所述第一参数和所述第二参数确定所述用户终端是否能够充当第一类型用户终端。
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