WO2016058117A1 - 控制广播数据包的发送频度的方法、装置和终端 - Google Patents
控制广播数据包的发送频度的方法、装置和终端 Download PDFInfo
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- WO2016058117A1 WO2016058117A1 PCT/CN2014/088453 CN2014088453W WO2016058117A1 WO 2016058117 A1 WO2016058117 A1 WO 2016058117A1 CN 2014088453 W CN2014088453 W CN 2014088453W WO 2016058117 A1 WO2016058117 A1 WO 2016058117A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/16—Threshold monitoring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
Definitions
- the present invention relates to the field of wireless positioning technologies, and in particular, to a method, an apparatus, and a terminal for controlling a transmission frequency of a broadcast data packet.
- Wireless positioning technology has been widely used in outdoor positioning, indoor positioning, location services (English: Location Based Services; referred to as: LBS) and other fields.
- a common network architecture generally includes a located terminal, a network device and a server for implementing the positioning function.
- the terminal and the network device communicate through a wireless network, and the network device and the network device and the network device and the server communicate with each other through a wired network or a wireless network.
- the terminal continuously sends the broadcast data packet according to the set transmission frequency; after receiving the broadcast data packet sent by the terminal, the network device extracts relevant parameters (such as the device identifier of the terminal) from the broadcast data packet, and measures the calculation for the calculation.
- the physical quantity of the terminal location for example, Received Signal Strength Indicator (RSSI), Angle of Arrival (AOA), etc.; afterwards, the network device sends the above information to the server; The position coordinates of the terminal are calculated based on these parameters.
- RSSI Received Signal Strength Indicator
- AOA Angle of Arrival
- the transmission frequency of the terminal transmitting the broadcast data packet is preset, and lacks flexibility.
- the embodiment of the present invention provides a method, an apparatus, and a terminal for controlling the transmission frequency of the broadcast data packet.
- the technical solution is as follows:
- a method for controlling a transmission frequency of a broadcast data packet for a terminal configured to receive a broadcast data packet in a broadcast receiving segment to transmit a broadcast data packet in a broadcast transmission segment, the method comprising :
- a channel environment parameter of an area where the terminal is located where the channel environment parameter includes a data packet time density and/or a data packet transmission success rate
- the first transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment after the at least one broadcast receiving segment.
- the channel environment parameter includes only the data packet time density
- Determining, according to the channel environment parameter, the first sending frequency including:
- a transmission frequency higher than the second transmission frequency is used as the first transmission frequency
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, and the first density threshold is ⁇ the second density threshold.
- the channel environment parameter includes only the data packet sending success rate
- Determining, according to the channel environment parameter, the first sending frequency including:
- a transmission frequency higher than the second transmission frequency is used as the first transmission frequency
- a lower transmission frequency than the second transmission frequency is used as the first transmission frequency
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, and the first success rate threshold ⁇ the second success rate Threshold.
- the channel environment parameter includes the data packet time density and the data packet sending success rate
- Determining, according to the channel environment parameter, the first sending frequency including:
- a higher transmission frequency than the second transmission frequency is used as the first transmission frequency
- the packet time density is greater than the second density threshold and/or the packet transmission success rate is small
- the second success rate threshold is used, a transmission frequency lower than the second transmission frequency is used as the first transmission frequency
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, where the first density threshold ⁇ the second density threshold, The first success rate threshold ⁇ the second success rate threshold.
- the determining, by using the channel environment parameter, the first sending frequency includes:
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment.
- the channel environment parameter includes only the data packet time density
- Determining, according to the channel environment parameter, the second sending frequency, and the sending frequency of each other terminal, the first sending frequency including:
- a transmission frequency higher than the second transmission frequency is used as the First transmission frequency
- the channel environment parameter includes only the data packet sending success rate
- Determining, according to the channel environment parameter, the second sending frequency, and the sending frequency of each other terminal, the first sending frequency including:
- a transmission frequency higher than the second transmission frequency is used as the transmission frequency.
- the first transmission frequency or,
- a transmission frequency lower than the second transmission frequency is used as the transmission frequency.
- the channel environment parameter includes the data packet time density and the data packet sending success rate
- Determining, according to the channel environment parameter, the second sending frequency, and the sending frequency of each other terminal, the first sending frequency including:
- the second transmission frequency is a transmission frequency with a high transmission frequency as the first transmission frequency
- the second transmission frequency is not lower than the transmission frequency of any one of the other terminals, Using a lower transmission frequency than the second transmission frequency as the first transmission frequency;
- the channel environment parameter includes the data packet time density
- Determining, according to the broadcast data packet sent by the other terminal, a channel environment parameter of an area where the terminal is located including:
- N r represents the number of data packet receptions of the terminal in the at least one broadcast receiving segment
- T r represents the sum of the reception durations of the at least one broadcast receiving segment
- the channel environment parameter includes the data packet sending success rate
- Determining, according to the broadcast data packet sent by the other terminal, a channel environment parameter of an area where the terminal is located including:
- N r represents the number of data packet receptions of the terminal in the at least one broadcast receiving segment
- P represents that the terminal receives broadcast data packets from P other terminals in the at least one broadcast receiving segment
- P ⁇ 1 and P is an integer
- j ⁇ [1, P] and j is an integer
- N t represents the sum of the number of theoretical transmissions of packets of the P other terminals in the at least one broadcast receiving segment.
- the method further includes:
- the broadcast data packet is sent according to the first sending frequency and the sending duration.
- the method further includes:
- the receiving duration of each broadcast receiving segment is set to be greater than a reciprocal of a preset minimum sending frequency, and the receiving duration of the broadcast receiving segment of the terminal is equal to the receiving duration of the broadcast receiving segment of the other terminal.
- an apparatus for controlling a transmission frequency of a broadcast data packet the terminal being configured to receive a broadcast data packet in a broadcast receiving section to transmit a broadcast data packet in a broadcast transmission section, the apparatus comprising :
- a data packet receiving module configured to receive, in at least one broadcast receiving segment, a broadcast data packet sent by another terminal;
- a parameter determining module configured to determine, according to the broadcast data packet sent by the other terminal, a channel environment parameter of an area where the terminal is located, where the channel environment parameter includes a data packet time density and/or a data packet transmission success rate;
- a frequency determining module configured to determine, according to the channel environment parameter, a first sending frequency, where the first sending frequency is that the terminal sends a broadcast data packet in a broadcast sending segment after the at least one broadcast receiving segment Send frequency.
- the channel environment parameter includes only the data packet time density
- the frequency determining module includes: a first up-regulating unit and a first down-regulating unit;
- the first uplinking unit is configured to: when the data packet time density is less than the first density threshold, use a transmission frequency higher than the second transmission frequency as the first transmission frequency;
- the first down-modulating unit is configured to: when the data packet time density is greater than the second density threshold, use a lower transmission frequency than the second transmission frequency as the first transmission frequency;
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, and the first density threshold is ⁇ the second density threshold.
- the channel environment parameter includes only the data packet sending success rate
- the frequency determining module includes: a second up-regulating unit and a second down-regulating unit;
- the second uplinking unit is configured to: when the data packet transmission success rate is greater than the first success rate threshold, use a transmission frequency higher than the second transmission frequency as the first transmission frequency;
- the second down-modulation unit is configured to: when the data packet transmission success rate is less than the second success rate threshold, use a lower transmission frequency than the second transmission frequency as the first transmission frequency;
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, and the first success rate threshold ⁇ the second success rate Threshold.
- the channel environment parameter includes the data packet time density and the data packet sending success rate
- the frequency determining module includes: a third up-regulating unit and a third down-regulating unit;
- the third uplinking unit is configured to: when the data packet time density is less than the first density threshold and the data packet transmission success rate is greater than the first success rate threshold, use a higher transmission frequency than the second transmission frequency The first transmission frequency;
- the third down-modulating unit is configured to use a lower transmission frequency than the second transmission frequency when the data packet time density is greater than the second density threshold and/or the data packet transmission success rate is less than the second success rate threshold Degree as the first transmission frequency;
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, where the first density threshold ⁇ the second density threshold, The first success rate threshold ⁇ the second success rate threshold.
- the frequency determining module includes: a frequency acquiring unit and a frequency determining unit;
- the frequency obtaining unit is configured to determine, according to a frequency parameter carried in a broadcast data packet sent by each other terminal, a sending frequency of sending a broadcast data packet by each other terminal;
- the frequency determining unit is configured to determine the first sending frequency according to the channel environment parameter, the second sending frequency, and the sending frequency of each other terminal;
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment.
- the channel environment parameter includes only the data packet time density
- the frequency determining unit includes: a first uppering subunit and a first lowering subunit;
- the first uplinking subunit is configured to use the second sending when the data packet time density is less than a third density threshold and the second sending frequency is not higher than a sending frequency of any other terminal. a frequency of high transmission frequency as the first transmission frequency;
- the first down-conversion sub-unit is configured to adopt a second transmission ratio when the data packet time density is greater than a fourth density threshold and the second transmission frequency is not lower than a transmission frequency of any other terminal a frequency with a low frequency as the first transmission frequency;
- the channel environment parameter includes only the data packet sending success rate
- the frequency determining unit includes: a second uppering subunit and a second lowering subunit;
- the second upper adjustment subunit is configured to use, when the data packet transmission success rate is greater than a third success rate threshold, and the second transmission frequency is not higher than a transmission frequency of any other terminal, a transmission frequency with a high transmission frequency as the first transmission frequency;
- the second down-conversion sub-unit is configured to use, when the data packet transmission success rate is less than a fourth success rate threshold, and the second transmission frequency is not lower than a transmission frequency of any other terminal, a transmission frequency with a low transmission frequency as the first transmission frequency;
- the channel environment parameter includes the data packet time density and the data packet sending success rate
- the frequency determining unit includes: a third uppering subunit and a third lowering subunit;
- the third upper adjustment subunit is configured to: when the data packet time density is less than a third density threshold, and the data packet transmission success rate is greater than a third success rate threshold, and the second transmission frequency is not higher than any one When the transmission frequency of the other terminal is used, a transmission frequency higher than the second transmission frequency is used as the first transmission frequency;
- the third lowering subunit is configured to: when the data packet time density is greater than a fourth density threshold, and/or the data packet transmission success rate is less than a fourth success rate threshold, and the second sending frequency is not lower than When the transmission frequency of any other terminal is used, a transmission frequency lower than the second transmission frequency is used as the first transmission frequency;
- the channel environment parameter includes the data packet time density
- the parameter determination module includes: a density calculation unit;
- the density calculation unit is configured to calculate the data packet time density ⁇ according to the following formula:
- N r represents the number of data packet receptions of the terminal in the at least one broadcast receiving segment
- T r represents the sum of the reception durations of the at least one broadcast receiving segment
- the channel environment parameter includes the data packet sending success rate
- the parameter determining module includes: a number determining unit and a success calculating unit;
- the number determining unit is configured to determine, according to the broadcast data packet sent by each other terminal, the number of theoretical data transmission times of each other terminal in the at least one broadcast receiving segment;
- the success rate calculation unit is configured to calculate the data packet transmission success rate S according to the following formula:
- N r represents the number of data packet receptions of the terminal in the at least one broadcast receiving segment
- P represents that the terminal receives broadcast data packets from P other terminals in the at least one broadcast receiving segment
- P ⁇ 1 and P is an integer
- j ⁇ [1, P] and j is an integer
- N t represents the sum of the number of theoretical transmissions of packets of the P other terminals in the at least one broadcast receiving segment.
- a duration determining module configured to randomly determine a sending duration of the broadcast sending segment after the at least one broadcast receiving segment
- a data packet sending module configured to send a broadcast data packet according to the first sending frequency and the sending duration after the at least one broadcast receiving segment ends.
- the device further includes:
- a duration configuration module configured to configure a receiving duration of each broadcast receiving segment to be greater than a reciprocal of a preset minimum transmission frequency, and a receiving duration of the broadcast receiving segment of the terminal and a receiving duration of the broadcast receiving segment of the other terminal equal.
- a terminal configured to receive a broadcast data packet in a broadcast receiving section, and to send a broadcast data packet in a broadcast transmitting section, the terminal comprising: a bus, and a processor communicating through the bus, a memory, a transceiver, wherein the memory is for storing one or more instructions, the instructions being configured to be executed by the processor;
- the transceiver is configured to receive broadcast data packets sent by other terminals in at least one broadcast receiving segment;
- the processor is configured to determine, according to the broadcast data packet sent by the other terminal, a channel environment parameter of an area where the terminal is located, where the channel environment parameter includes a data packet time density and/or a data packet transmission success rate;
- the processor is further configured to determine, according to the channel environment parameter, a first sending frequency, where the first sending frequency is that the terminal sends a broadcast data packet in a broadcast sending segment after the at least one broadcast receiving segment The frequency of transmission.
- the channel environment parameter includes only the data packet time density
- Determining, according to the channel environment parameter, the first sending frequency including:
- a transmission frequency higher than the second transmission frequency is used as the first transmission frequency
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, and the first density threshold is ⁇ the second density threshold.
- the channel environment parameter includes only the packet sending success rate
- Determining, according to the channel environment parameter, the first sending frequency including:
- the frequency is higher than the second transmission frequency Transmission frequency as the first transmission frequency
- a lower transmission frequency than the second transmission frequency is used as the first transmission frequency
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, and the first success rate threshold ⁇ the second success rate Threshold.
- the channel environment parameter includes the data packet time density and the data packet sending success rate
- Determining, according to the channel environment parameter, the first sending frequency including:
- a higher transmission frequency than the second transmission frequency is used as the first transmission frequency
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, where the first density threshold ⁇ the second density threshold, The first success rate threshold ⁇ the second success rate threshold.
- the determining, by using the channel environment parameter, the first sending frequency includes:
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment.
- the channel environment parameter includes only the data packet time density
- Determining, according to the channel environment parameter, the second sending frequency, and the sending frequency of each other terminal, the first sending frequency including:
- the packet time density is less than a third density threshold and the second transmission frequency is not higher than
- a transmission frequency higher than the second transmission frequency is used as the first transmission frequency
- the channel environment parameter includes only the data packet sending success rate
- Determining, according to the channel environment parameter, the second sending frequency, and the sending frequency of each other terminal, the first sending frequency including:
- a transmission frequency higher than the second transmission frequency is used as the transmission frequency.
- the first transmission frequency or,
- a transmission frequency lower than the second transmission frequency is used as the transmission frequency.
- the channel environment parameter includes the data packet time density and the data packet sending success rate
- Determining, according to the channel environment parameter, the second sending frequency, and the sending frequency of each other terminal, the first sending frequency including:
- the second transmission frequency is a transmission frequency with a high transmission frequency as the first transmission frequency
- the second transmission frequency is not lower than the transmission frequency of any one of the other terminals, Using a lower transmission frequency than the second transmission frequency as the first transmission frequency;
- the channel environment parameter includes the data packet time density
- Determining, according to the broadcast data packet sent by the other terminal, a channel environment parameter of an area where the terminal is located including:
- N r represents the number of data packet receptions of the terminal in the at least one broadcast receiving segment
- T r represents the sum of the reception durations of the at least one broadcast receiving segment
- the channel environment parameter includes the data packet sending success rate
- Determining, according to the broadcast data packet sent by the other terminal, a channel environment parameter of an area where the terminal is located including:
- N r represents the number of data packet receptions of the terminal in the at least one broadcast receiving segment
- P represents that the terminal receives broadcast data packets from P other terminals in the at least one broadcast receiving segment
- P ⁇ 1 and P is an integer
- j ⁇ [1, P] and j is an integer
- N t represents the sum of the number of theoretical transmissions of packets of the P other terminals in the at least one broadcast receiving segment.
- the processor is further configured to randomly determine a sending duration of the broadcast sending segment after the at least one broadcast receiving segment;
- the transceiver is further configured to send a broadcast data packet according to the first sending frequency and the sending duration after the at least one broadcast receiving segment ends.
- the processor is further configured to configure a receiving duration of each broadcast receiving segment to be greater than a reciprocal of a preset minimum sending frequency, and a receiving duration of the broadcast receiving segment of the terminal is different from a broadcast receiving segment of the other terminal The receiving time is equal.
- the terminal receives the broadcast data packet in the broadcast receiving segment to send the broadcast data packet in the broadcast sending segment, and the terminal receives the broadcast data packet sent by the other terminal in the at least one broadcast receiving segment, and determines the broadcast data packet sent by the other terminal according to the broadcast data packet sent by the other terminal.
- the channel environment parameter includes a data packet time density and/or a data packet transmission success rate, and then determining, according to the channel environment parameter, the broadcast sending segment of the terminal after the at least one broadcast receiving segment
- the transmission frequency of the broadcast data packet is transmitted; the problem of lack of flexibility in the transmission frequency of the broadcast data packet transmitted by the terminal in the prior art is solved; the transmission frequency is adaptively adjusted according to the channel environment parameter, and the transmission broadcast is improved.
- the flexibility of the packet is transmitted.
- FIG. 1 is a schematic structural view of an implementation environment according to various embodiments of the present invention.
- FIG. 2 is a flowchart of a method for controlling a transmission frequency of a broadcast data packet according to an embodiment of the present invention
- 3A is a flowchart of a method for controlling a frequency of sending broadcast data packets according to another embodiment of the present invention.
- 3B is a schematic diagram of a broadcast receiving segment and a broadcast transmitting segment according to an embodiment of the present invention
- FIG. 3C is a schematic diagram of three possible situations involved in the calculation of the duration of the overlap period
- FIG. 4 is a flowchart of a method for controlling a transmission frequency of a broadcast data packet according to still another embodiment of the present invention.
- FIG. 5 is a structural block diagram of an apparatus for controlling a transmission frequency of a broadcast data packet according to an embodiment of the present invention
- 6A is a structural block diagram of an apparatus for controlling a transmission frequency of a broadcast data packet according to another embodiment of the present invention.
- 6B is a structural block diagram of a parameter determining module according to an embodiment of the present invention.
- 6C is a structural block diagram of another parameter determining module according to an embodiment of the present invention.
- 6D is a structural block diagram of a frequency determining module according to an embodiment of the present invention.
- 6E is a structural block diagram of another frequency determining module according to an embodiment of the present invention.
- 6F is a structural block diagram of still another frequency determining module according to an embodiment of the present invention.
- FIG. 7A is a structural block diagram of an apparatus for controlling a transmission frequency of a broadcast data packet according to still another embodiment of the present invention.
- FIG. 7B is a structural block diagram of a frequency determining unit according to an embodiment of the present invention.
- FIG. 7C is a structural block diagram of another frequency determining unit according to an embodiment of the present invention.
- FIG. 7D is a structural block diagram of still another frequency determining unit according to an embodiment of the present invention.
- FIG. 8 is a structural block diagram of a terminal according to an embodiment of the present invention.
- FIG. 1 is a schematic structural diagram of an implementation environment involved in various embodiments of the present invention.
- the implementation environment includes at least one terminal 120 , at least one network device 140 , and a server 160 . among them:
- the terminal 120 may be various types of terminals that support the wireless broadcast positioning function.
- the terminal 120 can be a mobile terminal such as a mobile phone, a tablet computer, an e-book reader, a personal digital assistant (English: Personal Digital Assistant; PDA), a laptop portable computer, or a smart wristband or a smart watch.
- a wearable device such as a smart helmet can also be an object or a user-installable, portable tag (English: Tag), a badge, etc., or other independent or integrated wireless positioning device.
- the terminal 120 may include a micro control unit (English: Micro Control Unit; MCU for short), and a radio frequency module connected to the micro control unit (English: Radio Frequency Wireless Module; referred to as: RF Wireless) Module).
- the micro control unit is configured to control the radio frequency module to send and receive broadcast data packets.
- the terminal 120 may further include a timer (English: Timer) implemented by hardware, software, or a combination of both. The timer is integrated in the micro control unit to record and control the duration of the radio frequency module to send and receive broadcast data packets.
- Terminal 120 communicates with at least one network device 140 over a wireless network.
- the wireless network technology can be low-power Bluetooth (English: Bluetooth Low Energy; referred to as: BLE), wireless fidelity (English: Wireless Fidelity; referred to as: Wi-Fi), ZigBee, radio frequency identification (English: Radio Frequency Identification, Abbreviation: RFID), Ultra Wide Band (English: Ultra Wide Band; referred to as: UWB) and other technologies.
- the terminal 120 transmits a broadcast data packet for implementing positioning to the at least one network device 140 through the wireless network; correspondingly, the network device 140 receives the broadcast data packet transmitted by the terminal 120 through the wireless network.
- Network device 140 may be a variety of base station devices capable of receiving broadcast data packets transmitted by terminal 120.
- the network device 140 can be a locator (English: Locator), and the locator can be installed on a wall, a roof, a bracket, and the like.
- the network device 140 is configured to extract a device address or a device ID (Identity) corresponding to the terminal 120 from the received broadcast data packet, and is also used to measure a received signal strength indication, an angle of arrival, and the like for calculating the position coordinates of the terminal 120. Physical quantity.
- the network device 140 communicates with the server 160 via a wired network or a wireless network, and transmits the device address or device ID of the terminal 120 and the above physical quantity to the server 160.
- Server 160 can be a server, or a cluster of servers consisting of several servers, or a cloud computing service center.
- the server 160 is configured to receive a device address or a device ID of the terminal 120 transmitted by the network device 140, and a physical quantity for calculating the position coordinates of the terminal 120, such as a received signal strength indication, an angle of arrival, and the like, and calculate the position coordinates of the terminal 120 according to the above information.
- Transmission frequency refers to the theoretical value of the number of times a broadcast packet is sent per unit time. In various embodiments of the invention, "transmission frequency" refers to a theoretical value rather than an actual value. The theoretical value of the transmission frequency, The terminal application layer program controls the reference value or guide value of the broadcast packet sent by the underlying module.
- the theoretical value of the transmission frequency is greater than or equal to the actual value.
- the terminal application layer program controls the underlying module to transmit 5 broadcast packets per second.
- the terminal module may actually send the broadcast packet successfully less than 5 times per second.
- the theoretical value is 5 times/second, and the actual value may be only 4 times/second.
- the number of times the packet theory is transmitted is a theoretical value corresponding to the frequency of transmission, and refers to a theoretical value of the number of times a broadcast packet is transmitted in a certain period of time, rather than an actual value.
- the “total number of data packet transmissions” is also a theoretical value corresponding to the transmission frequency, and refers to the theoretical value of the total number of times the broadcast packet is transmitted in the broadcast transmission segment, instead of the actual value.
- Packet time density refers to the total number of broadcast data packets actually transmitted by all other terminals in the area where the terminal is located.
- the packet time density is mainly used to measure the base station load strength of each network device in the area where the terminal is located.
- the base station load strength refers to the load strength of the network device used to implement wireless positioning of the terminal.
- the corresponding base station load strength is positively correlated with the number of times it receives broadcast packets per unit time. The more times the network device receives broadcast data packets in a unit time, the greater the load strength of the base station, and the greater the power consumption of the network device per unit time. Conversely, the number of times the network device receives broadcast data packets per unit time. The less, the smaller the base station load strength, the smaller the power consumption of the network device per unit time.
- Packet sending success rate (English: packet sending success rate): refers to the average success rate of all other terminals in the area where the terminal is located to send broadcast data packets.
- the packet transmission success rate is mainly used to measure the channel contention strength of the area in which the terminal is located.
- the channel contention strength refers to the contention strength of the communication channel in each network where the terminal and the network device are located.
- the channel contention strength is positively correlated with the number of times that each terminal sends out broadcast packets in a unit time. The more times that each terminal sends out broadcast data packets in a unit time, the stronger the channel contention strength is, and the worse the network environment is. The fewer times that each terminal sends out broadcast data packets in a unit time, the channel contention strength is indicated. The weaker, the better the network environment.
- the area where the terminal is located refers to the area formed by other terminals that have the ability to communicate with the terminal to realize the transmission and reception of broadcast data packets. Under normal circumstances, the area where the terminal is located is a circular area centered on the terminal.
- FIG. 2 is a flowchart of a method for controlling a transmission frequency of a broadcast data packet according to an embodiment of the present invention.
- This embodiment is exemplified by applying the method to a terminal in the implementation environment shown in FIG. 1.
- the terminal is configured to receive a broadcast data packet in a broadcast receiving section and send a broadcast data packet in a broadcast transmission section.
- the method can include the following steps:
- Step 202 Receive broadcast data packets sent by other terminals in at least one broadcast receiving segment.
- Step 204 Determine, according to the broadcast data packet sent by the other terminal, a channel environment parameter of a region where the terminal is located, where the channel environment parameter includes a data packet time density and/or a data packet transmission success rate.
- Step 206 Determine a first sending frequency according to the channel environment parameter, where the first sending frequency is a sending frequency of the broadcast data packet sent by the terminal in a broadcast sending segment after the at least one broadcast receiving segment.
- the method for controlling the transmission frequency of a broadcast data packet provides that the broadcast terminal transmits the broadcast data packet in the broadcast transmission segment by receiving the broadcast data packet in the broadcast receiving segment, and receives the broadcast data packet in the at least one broadcast receiving segment.
- the broadcast data packet sent by the terminal determines a channel environment parameter of the area where the terminal is located according to the broadcast data packet sent by the terminal, where the channel environment parameter includes a data packet time density and/or a data packet transmission success rate, and further according to the channel environment parameter.
- the transmission frequency is adaptively adjusted according to channel environment parameters, which improves the flexibility of transmitting broadcast data packets.
- FIG. 3A is a flowchart of a method for controlling a transmission frequency of a broadcast data packet according to another embodiment of the present invention.
- This embodiment is exemplified by applying the method to a terminal in the implementation environment shown in FIG. 1.
- the terminal is configured to receive a broadcast data packet in a broadcast receiving section and send a broadcast data packet in a broadcast transmission section.
- the method can include the following steps:
- Step 301 Receive broadcast data packets sent by other terminals in at least one broadcast receiving segment.
- the configuration terminal receives the broadcast data packet in the broadcast receiving segment and transmits the broadcast data packet in the broadcast transmission segment. Specifically, in the broadcast sending segment, the terminal sends a broadcast data packet outward; and in the broadcast receiving segment, the terminal receives the broadcast data packet sent by other terminals in the surrounding area.
- FIG. 3B which is exemplarily shown a schematic diagram of a broadcast receiving section and a broadcast transmitting section, the broadcast receiving section and the broadcast transmitting section alternate with each other.
- the manner in which the terminal switches between the two working modes of the broadcast receiving segment and the broadcast transmitting segment is different.
- the wireless network technology used by the terminal is BLE technology
- the terminal's universal access specification (English: Generic Access Profile; GAP) layer is configured as the broadcast mode
- the terminal works in the broadcast transmission segment
- the terminal's GAP layer is used Configured in Observer mode
- the terminal works in the broadcast receiving segment.
- the wireless network technology adopted by the terminal is the Zigbee technology
- the terminal can send broadcast data packets to other terminals in the same network or receive broadcast data packets sent by other terminals in the same network at any time.
- the transmission duration T b of each broadcast transmitting segment is randomly determined, and the receiving duration T r of each broadcast receiving segment is configured to be preset.
- the fixed value, and the receiving duration of the broadcast receiving segment of different terminals is also the same.
- the transmission duration T b T c + T ⁇
- T c is a constant
- T ⁇ may be a random number between intervals [0, T ⁇ m ]
- T ⁇ m is a preset maximum random number.
- the receiving duration T r is configured to be greater than f min is the preset minimum transmission frequency.
- the maximum value of the reception duration T r may be limited, or the maximum value of the ratio between the reception durations T r and T c may be limited.
- Step 302 Determine a channel environment parameter of an area where the terminal is located according to the broadcast data packet sent by the other terminal.
- the channel environment parameter is related to the number of broadcast data packets sent out by the other terminals in the area in which the terminal is located.
- Channel environment parameters include packet time density and/or packet transmission success rate.
- the data packet time density is the total number of broadcast data packets actually sent by all other terminals in the area in which the terminal is located, and is mainly used to measure the base station load strength of each network device in the area where the terminal is located.
- the success rate of data packet transmission is the average success rate of transmitting broadcast data packets by all other terminals in the area where the terminal is located. It is mainly used to measure the channel contention strength of the area where the terminal is located.
- the terminal calculates the packet time density ⁇ according to the following formula:
- N r represents the number of times the terminal receives the data packet in at least one broadcast receiving segment.
- T r represents the sum of the reception durations of at least one broadcast receiving segment.
- Q denotes the number of at least one broadcast receiving section, Q ⁇ 1 and Q is an integer, k ⁇ [1, Q] and k is an integer, and Tr (k) represents the receiving duration of the kth broadcast receiving section.
- N r is the number of times the terminal actually receives the broadcast data packet in the Q broadcast receiving segments, that is, the number of times the other terminals in the surrounding area actually transmit the broadcast data packet in the Q broadcast receiving segments.
- the packet time density may also be calculated according to the sum of the total number of broadcast data packets actually received by the terminal in the at least one broadcast receiving segment and the receiving duration of the at least one broadcast receiving segment.
- This embodiment is exemplified only by sending a broadcast data packet corresponding to one broadcast data packet, which is not specifically limited.
- the process for the terminal to calculate the data packet transmission success rate may include the following first and second steps:
- the number of theoretical transmissions of data packets of each other terminal in at least one broadcast receiving segment is determined according to the broadcast data packet transmitted by each other terminal.
- the broadcast data packet may carry related parameters, so that the terminal in the broadcast receiving segment receives the broadcast data packet and then carries the broadcast data packet according to the broadcast data packet.
- the relevant parameters calculate the number of theoretical transmissions of the data packets in the broadcast receiving segment of the terminal of the other terminal in the broadcast transmission segment.
- the number of theoretical transmissions of the data packet of the jth other terminal in at least one broadcast receiving segment of the terminal can be calculated by the following steps 1 to 4:
- the terminal receives, in the kth broadcast receiving segment of the at least one broadcast receiving segment, a broadcast data packet sent by the jth other terminal in the area, and the terminal broadcasts the broadcast data according to the jth other terminal.
- the frequency parameter carried in the packet determines the transmission frequency f jk of the jth other terminal in the kth broadcast receiving segment.
- the frequency parameter may be a transmission frequency or a frequency level.
- the frequency parameter is a transmission frequency
- the transmission frequency is directly used as the transmission frequency of the jth other terminal in the kth broadcast receiving segment.
- the terminal can directly encapsulate the transmission frequency in the broadcast transmission segment in the broadcast data packet, so that the terminal in the broadcast receiving segment can directly read and obtain the broadcast data packet.
- the terminal receives the broadcast data packet sent by the jth other terminal, and the broadcast data packet carries the transmission frequency f jk , and the terminal directly reads the transmission frequency f from the broadcast data packet. Jk .
- the frequency parameter is a frequency level
- a frequency level is read from a broadcast data packet sent by the jth other terminal, and the jth other terminal is determined to be at the kth according to the frequency level.
- the broadcast frequency within the broadcast receiving segment.
- the transmission frequency may also be divided into different frequency levels in advance, and different frequency levels correspond to different transmission frequencies.
- the terminal may be encapsulated in the broadcast data packet in the broadcast transmission segment, and the terminal in the broadcast receiving segment receives the broadcast data packet. , read the frequency level from it and calculate the transmission frequency according to a preset algorithm.
- the terminal receives the broadcast data packet sent by the jth other terminal, and the broadcast data packet carries the frequency level, and the terminal reads the frequency level from the broadcast data packet, according to the frequency.
- the level calculates the transmission frequency f jk .
- the terminal may calculate the transmission frequency f jk according to the frequency level m by using the first predetermined algorithm.
- the first predetermined algorithm is a is a proportional coefficient and a>0
- M represents the total frequency level number
- M ⁇ 2 and M is an integer
- fmax represents a predetermined maximum transmission frequency.
- f max is a preset maximum transmission frequency, and this value can be set as an empirical value according to actual conditions.
- the terminal may be calculated according to a second predetermined algorithm and frequency class m by the transmission frequency f jk.
- the second predetermined algorithm is M represents the total frequency level number, M ⁇ 2 and M is an integer, f max represents a predetermined maximum transmission frequency, and f min represents a predetermined minimum transmission frequency.
- f max is a preset maximum transmission frequency, and the value may be set according to an actual situation
- f min is a preset minimum transmission frequency, and the value may also be set according to an actual situation.
- the duration parameter carried in the broadcast data packet is used as an example for the total number of theoretical transmissions of the data packet in the broadcast transmission segment corresponding to the other terminal and the transmission sequence number corresponding to the broadcast data packet.
- the terminal When the other terminal in the broadcast transmission segment sends the broadcast data packet to the outside, the terminal sends the total number N of data packets in the broadcast segment of the current broadcast segment and the transmission sequence number n corresponding to the broadcast data packet to be sent to the to-be-sent.
- N In the broadcast packet, 1 ⁇ n ⁇ N and n and N are integers.
- the other terminal in the broadcast sending segment may also send its own device identifier when sending the broadcast data packet outward. Encapsulated in the broadcast packet to be sent. The device identifier is used to identify different terminals, usually represented by the device address or device ID.
- the terminal may create an information table, which is used to record the device identifier carried in the broadcast data packet sent by each other terminal, the total number of times the data packet is theoretically transmitted, Send sequence number and frequency level (or transmission frequency).
- the information table can be as shown in Table-3 below:
- Serial number Equipment Identity Total number of packets sent by theory Send serial number Frequency level 1 00 00 0A 01 20 4 4 2 00 00 0A 02 twenty two 17 4 3 00 00 0A 03 20 11 4 ... ... ... ... ... ...
- the duration parameter carried in the broadcast data packet is the total number of theoretical transmissions of the data packet in the broadcast transmission segment corresponding to the other terminal, and the transmission sequence number corresponding to the broadcast data packet. n.
- the terminal calculates the overlap period duration ⁇ t jk of the broadcast transmission segment corresponding to the other terminal by the kth broadcast receiving segment by using the following manner:
- the terminal side of the broadcast transmission segment corresponding to the terminal side is calculated.
- f j represents the transmission frequency corresponding to the jth other terminal; Indicates the time interval between two adjacent outgoing broadcast data packets; t r represents the local time when the terminal receives the broadcast data packet, that is, the terminal side reception time.
- the terminal side start reception time t sr and the terminal side end reception time t er are overlapped.
- the time period is ⁇ t jk .
- the magnitude relationship between the above four parameters t sj , t ej , t sr and t er may include the following three cases:
- the terminal may combine the above four parameters t sj , t ej , t sr and t er
- the size relationship whether the terminal receives the broadcast data packet transmitted by the jth other terminal at the start and end time of the kth broadcast receiving segment, and whether the jth other terminal transmits the broadcast at the start and end time of the corresponding broadcast transmission segment. The three elements of the packet are calculated.
- N t(jk) of the jth other terminal in the kth broadcast receiving segment has the following possibilities:
- N t(jk) [ ⁇ t jk ⁇ f jk ];
- N t(jk) [ ⁇ t jk ⁇ f jk ]+1;
- N t(jk) [ ⁇ t jk ⁇ f jk ]+1;
- N t(jk) [ ⁇ t jk ⁇ f jk ]+1;
- ⁇ t jk represents an overlapping period duration of a broadcast transmission segment corresponding to the jth broadcast receiving segment and the jth other terminal
- f jk indicates that the jth other terminal is received at the kth broadcast The frequency of transmission within the segment.
- the above calculation process only calculates the theoretical number of transmissions N t(jk) of the data packet of the jth other terminal in the kth broadcast receiving segment, and preconfigures the start and end time of the jth other terminal in the corresponding broadcast sending segment.
- the calculation method when sending broadcast packets is sent out is illustrated.
- the terminal may combine the above four parameters t sj , t ej , t sr and t er .
- the size relationship whether the terminal receives the broadcast data packet sent by the jth other terminal at the start and end time of the kth broadcast receiving segment, and whether the jth other terminal transmits the broadcast data at the start and end time of the corresponding broadcast transmission segment.
- the three elements of the packet calculate the number of theoretical packet transmissions of the jth other terminal in the kth broadcast receiving segment.
- the terminal After calculating the number of theoretical transmission times N t(jk) of the data packet of the jth other terminal in the kth broadcast receiving segment, the terminal calculates data of the jth other terminal in the at least one broadcast receiving segment according to the following formula: Packet theory transmission times N t(j) :
- Q represents the number of the at least one broadcast receiving segment
- Q ⁇ 1 and Q is an integer
- k ⁇ [1,Q] and k is an integer
- the data packet transmission success rate is calculated according to the theoretical number of data packets transmitted by each other terminal in at least one broadcast receiving segment and the number of data packets received by the terminal in at least one broadcast receiving segment.
- the terminal calculates the packet transmission success rate S according to the following formula:
- N r represents the number of times the terminal receives the data packet in the at least one broadcast receiving segment
- P represents that the terminal receives the broadcast data packet from the P other terminals in the at least one broadcast receiving segment, P ⁇ 1 and P is an integer, j ⁇ [1,P] and j is an integer
- N t represents the sum of the number of theoretical transmissions of packets of P other terminals in at least one broadcast receiving segment.
- the data packet transmission success rate refers to the average success rate of sending broadcast data packets by each other terminal in the area where the terminal is located, that is, the broadcast data packet interaction between the terminal and the terminal.
- the "average success rate" is for all other terminals in the area where the terminal is located and capable of performing broadcast packet interaction with the terminal, not for one of the other terminals.
- the terminal receives the broadcast data packet from the same other terminal multiple times in one broadcast receiving segment, the terminal only needs to calculate, according to one of the broadcast data packets, that the other terminal broadcasts and receives at the terminal.
- the number of packets transmitted in the segment is theoretically transmitted and the frequency of transmission, and each other terminal can be distinguished by the device identifier carried in the broadcast packet.
- Step 303 Determine a first sending frequency according to the channel environment parameter, where the first sending frequency is a sending frequency of the broadcast data packet sent by the terminal in a broadcast sending segment after the at least one broadcast receiving segment.
- the terminal determines the channel environment parameter of the area according to the broadcast data packet received in the at least one broadcast receiving segment, and then determines the transmission frequency in the subsequent broadcast sending segment according to the channel environment parameter.
- the transmission frequency of transmitting broadcast data packets in multiple broadcast transmission segments may also be greater than 1, that is, Q>1, and the terminal is based on the two or more broadcast reception segments.
- the channel environment parameter determined in the medium determines the transmission frequency of transmitting the broadcast data packet in the one or more broadcast transmission segments after the two or more broadcast receiving segments.
- the broadcast receiving segment and the broadcast transmitting segment are alternately arranged one by one, the serial number corresponding to the broadcast receiving segment is 1, 3, 5, 7..., and the serial number corresponding to the broadcast transmitting segment is 2, 4, 6, 8... .
- the terminal may adjust the transmission frequency in the broadcast transmission segment 2 according to the channel environment parameter determined in the broadcast receiving segment 1; adjust the transmission frequency in the broadcast transmission segment 4 according to the channel environment parameter determined in the broadcast receiving segment 3. Degree; and so on.
- the terminal may adjust the transmission frequency in the broadcast transmission segment 4 or 6 or other subsequent broadcast transmission segments according to the channel environment parameters determined in the broadcast receiving segments 1 and 3, and the like.
- the terminal adjusts the transmission frequency in the next broadcast transmitting segment of the broadcast receiving segment according to the channel environment parameter determined in one broadcast receiving segment, the frequency adjustment sensitivity Higher, the adjustment effect is more obvious.
- this step includes the following three possible implementation modes:
- the channel environment parameter includes only the packet time density, and at this time: (1), when the data packet time density is less than the first density threshold, the transmission frequency higher than the second transmission frequency is adopted. The degree is used as the first transmission frequency; (2) when the packet time density is greater than the second density threshold, the transmission frequency lower than the second transmission frequency is used as the first transmission frequency.
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in the broadcast transmission segment before the at least one broadcast receiving segment, and the first density threshold is ⁇ the second density threshold.
- the terminal can increase/decrease the transmission frequency according to a preset frequency adjustment range.
- the terminal may also determine the first transmission frequency according to the correspondence between the preset packet time density and the transmission frequency, and query the correspondence according to the packet time density.
- the terminal can also up/down a frequency level according to a preset frequency level.
- the terminal may further set different adjustment policies according to actual requirements, which is not specifically limited in this embodiment.
- the channel environment parameter only includes the data packet transmission success rate.
- the frequency is higher than the second transmission frequency.
- the transmission frequency is used as the first transmission frequency;
- the transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in the broadcast transmission segment before the at least one broadcast receiving segment, and the first success rate threshold is ⁇ the second success rate threshold.
- the terminal can increase/decrease the transmission frequency according to a preset frequency adjustment range.
- the terminal may also determine the first transmission frequency according to the corresponding relationship between the pre-set data packet transmission success rate and the transmission frequency, and query the correspondence according to the data packet transmission success rate.
- the terminal can also up/down a frequency level according to a preset frequency level.
- the terminal may further set different adjustment policies according to actual requirements, which is not specifically limited in this embodiment.
- the channel environment parameter includes a data packet time density and a data packet transmission success rate.
- the transmission frequency higher than the second transmission frequency is used as the first transmission frequency
- the transmission frequency lower than the second transmission frequency is used as the first transmission frequency
- the second transmission frequency is that the terminal sends the broadcast data packet in the broadcast transmission segment before the at least one broadcast reception segment. Transmission frequency, first density threshold ⁇ second density threshold, first success threshold ⁇ second Success rate threshold.
- the data packet time density ⁇ is smaller than the first density threshold and the data packet transmission success rate S is greater than the first success rate threshold, it indicates that the base station load strength of the area in which the terminal is located is low and the channel contention strength is also low, and the terminal appropriately uplinks and transmits Frequency.
- the packet time density ⁇ is greater than the second density threshold and/or the packet transmission success rate S is less than the second success rate threshold, indicating that the base station load strength of the area in which the terminal is located is higher and/or the channel contention strength is also higher. The terminal appropriately lowers the transmission frequency.
- the terminal may use the same transmission frequency as the transmission frequency in the previous broadcast transmission segment as the transmission frequency in the next broadcast transmission segment.
- the cases other than the above two cases (1) and (2) include: ⁇ 1 ⁇ 2 and S>S 1 , ⁇ 1 ⁇ 2 and S 1 >S>S 2 , ⁇ ⁇ ⁇ 1 and S 1 > S > S 2 .
- the terminal can increase/decrease the transmission frequency according to a preset frequency adjustment range.
- the terminal may also determine the first transmission frequency according to the preset data packet time density, the correspondence between the data packet transmission success rate and the transmission frequency, and the query according to the data packet time density and the data packet transmission success rate. .
- the terminal can also up/down a frequency level according to a preset frequency level.
- the terminal may further set different adjustment policies according to actual requirements, which is not specifically limited in this embodiment.
- the case where the packet time density is equal to the first density threshold and/or the second density threshold, and the packet transmission success rate and the first success are not considered.
- the case where the rate threshold and/or the second success rate threshold are equal, that is, the critical point case is not considered.
- a person skilled in the art can determine an adjustment strategy of the transmission frequency according to actual needs, which is easily considered by those skilled in the art on the basis of the embodiment, and this embodiment does not Repeat them.
- the terminal After determining the first sending frequency, the terminal switches to enter the broadcast sending segment after the end of the at least one broadcast receiving segment, and sends the broadcast data packet to the determined first sending frequency.
- the sending duration of the broadcast sending segment can be determined by the following step 304:
- Step 304 Randomly determine the transmission duration of the broadcast transmission segment after the at least one broadcast receiving segment.
- step 304 may be performed before step 301 to step 303, or may be performed after step 301 to step 303, and may also be performed simultaneously with step 301 to step 303.
- This embodiment is only taken as an example after step 301 to step 303 in step 304, which is not specifically limited.
- Step 305 After the at least one broadcast receiving segment ends, the broadcast data packet is sent according to the first sending frequency and the sending duration.
- the terminal determines, according to the first sending frequency, the number of times the broadcast data packet is sent per unit time in the broadcast sending segment, that is, how often the broadcast data packet is sent; the terminal determines the duration of sending the broadcast data packet according to the sending duration. .
- the timer of the terminal records and controls the duration of receiving and receiving broadcast data packets by the radio frequency module.
- the duration of the broadcast receiving segment reaches a preset receiving duration T r
- the timer sends an indication to the micro control unit of the terminal, and the micro control unit receives After the indication, the control radio frequency module sends out the broadcast data packet.
- the transmission duration T b T c + T ⁇
- the transmission frequency is the first transmission frequency determined according to the above step 303.
- this step may include the following sub-steps:
- the total number of theoretical transmissions of the packets in the broadcast transmission segment after the at least one broadcast receiving segment after the at least one broadcast receiving segment is calculated according to the first transmission frequency and the transmission duration is N, N ⁇ 1 and N is an integer.
- different algorithms may be selected depending on whether the terminal transmits a broadcast packet at the start and end time of the broadcast transmission segment.
- a broadcast data packet including a device identifier, a total number of data packet theory transmissions, a transmission sequence number corresponding to the broadcast data packet, and a frequency parameter is generated.
- the frequency parameter may be a transmission frequency or a frequency level corresponding to the transmission frequency.
- the transmission sequence number is usually counted from 1 and the terminal increments the transmission sequence number by one after each transmission of the broadcast data packet.
- the terminal After the terminal generates a broadcast data packet carrying the above parameters, the terminal sends the broadcast data packet.
- the network devices in the surrounding area and other terminals in the broadcast receiving section receive broadcast data packets.
- the network device is configured to perform a positioning by interacting with the server according to the received broadcast data packet.
- the other terminals in the broadcast receiving segment are configured to determine channel environment parameters of the area according to the received broadcast data packet, thereby completing adaptive adjustment of the transmission frequency.
- the timer of the terminal records and controls the duration of receiving and receiving the broadcast data packet by the radio frequency module.
- the timer sends an indication to the micro control unit of the terminal, and the micro control unit receives the After the indication, the control radio frequency module stops sending the broadcast data packet outward and enters the next broadcast receiving segment.
- the receiving duration is still T r , and the above steps 301 to 305 are repeatedly performed.
- the method for controlling the transmission frequency of a broadcast data packet provides that the terminal receives the broadcast data packet in the broadcast receiving segment and transmits the broadcast data packet in the broadcast transmission segment, and the terminal receives the broadcast data packet in the at least one broadcast receiving segment.
- the broadcast data packet sent by the other terminal determines the channel environment parameter of the area where the terminal is located according to the broadcast data packet sent by the other terminal, and the channel environment parameter includes the data packet time density and/or the data packet transmission success rate, and further according to the channel environment.
- the parameter determines the transmission frequency of the broadcast data packet sent by the terminal in the broadcast transmission segment after the at least one broadcast receiving segment; and solves the problem that the transmission frequency of the broadcast data packet sent by the terminal in the prior art lacks flexibility;
- the transmission frequency is adaptively adjusted according to the channel environment parameters, and the flexibility of transmitting the broadcast data packet is improved.
- the method for controlling the transmission frequency of the broadcast data packet further indicates the channel environment parameter by the data packet time density and/or the data packet transmission success rate.
- the two are related and there are certain differences.
- Both the packet time density and the packet transmission success rate reflect the number of broadcast packets transmitted by each other terminal in the area in which the terminal is located in a unit time.
- the packet time density is mainly used to measure the base station load strength
- the packet transmission success rate is mainly used to measure the channel contention strength.
- the terminal adaptively adjusts the transmission frequency in the subsequent broadcast transmission segment by using any one or all of the above two parameters measured in the broadcast receiving segment, thereby effectively controlling the base station load strength and channel contention strength of the surrounding environment, and ensuring The reliability and success rate of positioning, while balancing the energy consumption between various network devices, prolongs the network life.
- the embodiment also provides two ways of dividing the frequency level. By setting different frequency levels, the response speed of the transmission frequency adjustment can be accelerated. Among them, the linear division method can make the variation range of the transmission frequency relatively stable; the geometric division method can make the variation frequency of the transmission frequency more obvious. In practical applications, different division methods can be selected according to actual conditions.
- the transmission frequency in the broadcast transmission segment can be preset according to actual conditions. For example, it is set to a predetermined maximum transmission frequency f max .
- FIG. 4 is a flowchart of a method for controlling a frequency of transmission of a broadcast data packet according to another embodiment of the present invention.
- This embodiment is still exemplified by the method applied to the terminal in the implementation environment shown in FIG. 1, the terminal being configured to receive the broadcast data packet in the broadcast receiving segment and send the broadcast data packet in the broadcast transmitting segment.
- the method can include the following steps:
- Step 401 Receive broadcast data packets sent by other terminals in at least one broadcast receiving segment.
- the configuration terminal receives the broadcast data packet in the broadcast receiving segment and transmits the broadcast data packet in the broadcast transmission segment.
- the reception duration T r of each broadcast receiving segment is a preset fixed value, and the reception duration of the broadcast receiving segments of different terminals is also the same.
- Reception time f min is the preset minimum transmission frequency.
- Step 402 Determine a channel environment parameter of an area where the terminal is located according to the broadcast data packet sent by the other terminal.
- the channel environment parameter is related to the number of broadcast data packets sent out by the other terminals in the area in which the terminal is located.
- Channel environment parameters include packet time density and/or packet transmission success rate.
- the data packet time density is the total number of broadcast data packets actually sent by all other terminals in the area in which the terminal is located, and is mainly used to measure the base station load strength of each network device in the area where the terminal is located.
- the success rate of data packet transmission is the average success rate of transmitting broadcast data packets by all other terminals in the area where the terminal is located. It is mainly used to measure the channel contention strength of the area where the terminal is located.
- the process for the terminal to calculate the data packet transmission success rate may include the following first and second steps:
- the data packet transmission success rate is calculated according to the theoretical number of data packets transmitted by each other terminal in at least one broadcast receiving segment and the number of data packets received by the terminal in at least one broadcast receiving segment.
- the duration parameter is the total number of theoretical packet transmissions in the broadcast transmission segment corresponding to other terminals and the The sending sequence number corresponding to the broadcast packet.
- the duration parameter is used as an example of the other terminal-side start transmission time of the other terminal, the other terminal-side end transmission time, and the other terminal-side transmission time of the broadcast data packet. Description.
- the other terminals in the broadcast transmission segment send the broadcast data packet
- the other corresponding broadcast transmission segments start the transmission time t sj ' with respect to the other terminal side time, and the other terminal side ends the transmission time t ej ′
- the other terminal side transmission time t bj ' of the broadcast data packet to be transmitted with respect to other terminal side time is encapsulated in the broadcast data packet to be transmitted. That is, the above t sj ', t ej ' and t bj ' are all other terminals in the broadcast transmission segment determined according to their respective local time.
- the other terminal in the broadcast sending segment may also send its own device identifier when sending the broadcast data packet outward. Encapsulated in the broadcast packet to be sent.
- the device identifier is used to identify different terminals, usually represented by the device address or device ID.
- the terminal may create an information table, which is used to record the device identifier carried in the broadcast data packet sent by each other terminal, and the other terminal side start sending time.
- t sj ' the other terminal side ends the transmission time t ej ', the other terminal side transmission time t bj ' corresponding to the current broadcast packet, and the frequency level (or transmission frequency).
- the information table can be as shown in Table-4 below:
- the duration parameter carried in the broadcast data packet is a start transmission time t sj ' of the other terminal side corresponding to the broadcast transmission segment corresponding to the other terminal side
- the other terminal side ends the transmission time t ej ' and the other terminal side of the broadcast packet transmits the time t bj '.
- the terminal calculates the overlap period duration ⁇ t jk of the broadcast transmission segment corresponding to the other terminal by the kth broadcast receiving segment by using the following manner:
- the j-th other terminal is calculated according to the other terminal-side initial transmission time t sj ', the other terminal-side transmission time t bj ', and the terminal-side reception time t r with respect to the terminal-side time when the terminal receives the broadcast data packet.
- t sj t r - (t bj '-t sj ').
- the broadcast corresponding to the jth other terminal is calculated according to the other terminal side end transmission time t ej ', the other terminal side transmission time t bj ', and the terminal side reception time t r with respect to the terminal side time when the terminal receives the broadcast data packet.
- the transmission side ends the transmission time t ej with respect to the terminal side of the terminal side time:
- the overlap period duration is calculated according to the terminal side start transmission time t sj , the terminal side end transmission time t ej , the current broadcast reception segment with respect to the terminal side time terminal side start reception time t sr , and the terminal side end reception time t er . ⁇ t jk .
- the magnitude relationship between the above four parameters t sj , t ej , t sr and t er may include the following three cases:
- the terminal when adjusting the transmission frequency, the terminal combines the second transmission frequency and the channel environment parameter of the terminal in the broadcast transmission segment before the at least one broadcast receiving segment.
- the first transmission frequency in the subsequent broadcast transmission segment is determined. details as follows:
- Step 403 Determine, according to the frequency parameter carried in the broadcast data packet sent by each other terminal, the frequency of transmission of the broadcast data packet sent by each other terminal.
- step 302 The process of determining the transmission frequency of other terminals has been performed in step 302 in the embodiment shown in FIG. 3A. The detailed description and description will not be repeated in this embodiment.
- Step 404 Determine a first transmission frequency according to a channel environment parameter, a second transmission frequency, and a transmission frequency of each other terminal.
- the second transmission frequency is a transmission frequency of the terminal transmitting the broadcast data packet in the broadcast transmission segment before the at least one broadcast reception segment. According to the type and quantity of parameters included in the channel environment parameters, this step includes the following three possible implementation modes:
- the channel environment parameter includes only the data packet time density, where: (1), when the data packet time density is less than the third density threshold, and the second transmission frequency is not higher than any other terminal.
- the transmission frequency is higher than the second transmission frequency as the first transmission frequency; (2) when the packet time density is greater than the fourth density threshold and the second transmission frequency is not lower than any one
- the transmission frequency lower than the second transmission frequency is used as the first transmission frequency.
- the third density threshold is ⁇ the fourth density threshold.
- the third density threshold and the fourth density threshold are both preset empirical values.
- the transmission frequency of some terminals is prevented from being too high and the transmission frequency of some terminals is too low.
- the terminal also needs to compare the transmission frequency in the previous broadcast transmission segment with the transmission frequency of other terminals. When the frequency of transmission of the terminal in the previous broadcast transmission segment is not higher than the transmission frequency of any other terminal, the terminal raises the transmission frequency. Otherwise, the transmission frequency is maintained unchanged, and the transmission frequency is increased by other terminals with lower transmission frequency, so as to ensure that the transmission frequency of each terminal in the surrounding area is in a relatively balanced state.
- the terminal needs to compare the transmission frequency in the previous broadcast transmission segment with the transmission frequency of other terminals.
- the terminal lowers the transmission frequency. Otherwise, the transmission frequency is maintained unchanged, and the transmission frequency is lowered by other terminals with higher transmission frequency, so as to ensure that the transmission frequency of each terminal in the surrounding area is in a relatively balanced state.
- the third density threshold may be equal to the fourth density threshold, that is, only one density threshold is set; or the third density threshold may be smaller than the fourth density threshold, that is, two density thresholds are set.
- the terminal may use the same transmission frequency as the second transmission frequency as the first transmission frequency.
- the terminal can increase/decrease the transmission frequency according to a preset frequency adjustment range.
- the terminal may also determine the first transmission frequency according to the correspondence between the preset packet time density and the transmission frequency, and query the correspondence according to the packet time density.
- the terminal can also up/down a frequency level according to a preset frequency level.
- the terminal may further set different adjustment policies according to actual requirements, which is not specifically limited in this embodiment.
- the channel environment parameter includes only the data packet transmission success rate.
- the transmission frequency higher than the second transmission frequency is used as the first transmission frequency
- the transmission frequency lower than the second transmission frequency is used as the first transmission frequency.
- the third success rate threshold is ⁇ the fourth success rate threshold.
- the third success rate threshold and the fourth success rate threshold are both preset empirical values.
- the terminal in order to ensure that the transmission frequency of each terminal in the surrounding area is in a relatively balanced state, the transmission frequency of some terminals is prevented from being too high and the transmission frequency of some terminals is too low.
- the terminal Before the terminal raises the transmission frequency, the terminal also needs to compare the transmission frequency in the previous broadcast transmission segment with the transmission frequency of other terminals. When the frequency of transmission of the terminal in the previous broadcast transmission segment is not higher than the transmission frequency of any other terminal, the terminal raises the transmission frequency. Similarly, when the frequency of transmission of the terminal in the previous broadcast transmission segment is not lower than the transmission frequency of any other terminal, the terminal lowers the transmission frequency.
- the third success rate threshold may be equal to the fourth success rate threshold, that is, only one success rate threshold is set; or the third success rate threshold may be greater than the fourth success rate threshold, that is, two successful settings are set. Rate threshold.
- the terminal may adopt the same frequency as the second transmission frequency except for setting (1) and (2) above, regardless of setting a success rate threshold or setting two success rate thresholds.
- the transmission frequency is taken as the first transmission frequency.
- the terminal can increase/decrease the transmission frequency according to a preset frequency adjustment range.
- the terminal may also send a correspondence between the success rate and the transmission frequency according to the preset data packet, and send the data according to the data packet.
- the delivery success query queries the correspondence to determine the first transmission frequency.
- the terminal can also up/down a frequency level according to a preset frequency level.
- the terminal may further set different adjustment policies according to actual requirements, which is not specifically limited in this embodiment.
- the channel environment parameter includes a data packet time density and a data packet transmission success rate.
- the transmission frequency higher than the second transmission frequency is used as the first transmission frequency
- the transmission frequency is taken as the first transmission frequency.
- the data packet time density ⁇ is smaller than the third density threshold and the data packet transmission success rate S is greater than the third success rate threshold, it indicates that the base station load strength of the area in which the terminal is located is low and the channel contention strength is also low, and the terminal is appropriately uplinked and sent. Frequency.
- the packet time density ⁇ is greater than the fourth density threshold and/or the packet transmission success rate S is less than the fourth success rate threshold, it indicates that the base station load strength of the area in which the terminal is located is higher and/or the channel contention strength is also higher. The terminal appropriately lowers the transmission frequency.
- the terminal in order to ensure that the transmission frequency of each terminal in the surrounding area is in a relatively balanced state, the transmission frequency of some terminals is prevented from being too high and the transmission frequency of some terminals is too low.
- the terminal Before the terminal raises the transmission frequency, the terminal also needs to compare the transmission frequency in the previous broadcast transmission segment with the transmission frequency of other terminals. When the frequency of transmission of the terminal in the previous broadcast transmission segment is not higher than the transmission frequency of any other terminal, the terminal raises the transmission frequency. Similarly, when the frequency of transmission of the terminal in the previous broadcast transmission segment is not lower than the transmission frequency of any other terminal, the terminal lowers the transmission frequency.
- the density threshold can be set to one or two, and the success threshold can also be set to one or two.
- the terminal may adopt the same transmission frequency as the second transmission frequency as the first in addition to the above cases (1) and (2). A transmission frequency.
- the terminal can increase/decrease the transmission frequency according to a preset frequency adjustment range.
- the terminal may also determine the first transmission frequency according to the preset data packet time density, the correspondence between the data packet transmission success rate and the transmission frequency, and the query according to the data packet time density and the data packet transmission success rate. .
- the terminal can also up/down a frequency level according to a preset frequency level.
- the different adjustment policies may be preset in advance according to the actual requirements, which is not specifically limited in this embodiment.
- the case where the packet time density is equal to the third density threshold and/or the fourth density threshold is not considered, and the packet transmission success rate and the third success are not successful.
- the case where the rate threshold and/or the fourth success rate threshold are equal that is, the critical point case is not considered.
- a person skilled in the art can determine an adjustment strategy of the transmission frequency according to actual needs, which is easily considered by those skilled in the art on the basis of the embodiment, and this embodiment does not Repeat them.
- the terminal After determining the first sending frequency, the terminal switches to enter the broadcast sending segment after the end of the at least one broadcast receiving segment, and sends the broadcast data packet to the determined first sending frequency.
- Step 405 randomly determining the transmission duration of the broadcast transmission segment after the at least one broadcast receiving segment.
- Step 406 After the at least one broadcast receiving segment ends, the broadcast data packet is sent according to the first sending frequency and the sending duration.
- steps 405 to 406 are the same as or similar to the steps 304 to 305 in the embodiment shown in FIG. 3A, and are not described in this embodiment.
- step 406 can include the following sub-steps:
- the terminal side start transmission time and the terminal side end transmission time of the broadcast transmission segment with respect to the terminal side time are determined according to the transmission duration.
- a broadcast packet including a device identifier, a terminal side start transmission time, a terminal side end transmission time, a terminal side transmission time of the broadcast data packet, and a frequency parameter is generated.
- the terminal After the terminal generates a broadcast data packet carrying the above parameters, the terminal sends the broadcast data packet.
- the network devices in the surrounding area and other terminals in the broadcast receiving section receive broadcast data packets.
- the network device is configured to perform a positioning by interacting with the server according to the received broadcast data packet.
- the other terminal in the broadcast receiving segment is configured to determine the channel environment parameter of the area according to the received broadcast data packet. And the adaptive adjustment of the transmission frequency is completed.
- the timer of the terminal records and controls the duration of receiving and receiving the broadcast data packet by the radio frequency module.
- the timer sends an indication to the micro control unit of the terminal, and the micro control unit receives the After the indication, the control radio frequency module stops sending the broadcast data packet outward and enters the next broadcast receiving segment.
- the receiving duration is still T r , and the above steps 401 to 406 are repeatedly performed.
- the method for controlling the transmission frequency of a broadcast data packet provides that the broadcast terminal transmits the broadcast data packet in the broadcast transmission segment by receiving the broadcast data packet in the broadcast receiving segment, and receives the broadcast data packet in the at least one broadcast receiving segment.
- the broadcast data packet sent by the terminal determines a channel environment parameter of the area where the terminal is located according to the broadcast data packet sent by the terminal, where the channel environment parameter includes a data packet time density and/or a data packet transmission success rate, and further according to the channel environment parameter.
- the transmission frequency is adaptively adjusted according to channel environment parameters, which improves the flexibility of transmitting broadcast data packets.
- the terminal is also in the previous broadcast transmission segment before adjusting the transmission frequency of the terminal.
- the transmission frequency is compared with the transmission frequency of other terminals.
- the terminal increases the transmission frequency; or
- the frequency of transmission of the terminal in the previous broadcast transmission segment is not lower than the transmission frequency of any other terminal, the terminal lowers the transmission frequency. It ensures that the transmission frequency of each terminal in the surrounding area is in a relatively balanced state, which is beneficial to the energy efficiency balance of each terminal, and is advantageous for balancing the positioning effect on each terminal.
- each broadcast data packet carries a device identifier, a total number of theoretical data transmission times, and broadcast data.
- the transmission sequence number and the frequency parameter corresponding to the packet in the embodiment shown in FIG. 4, each broadcast data packet carries the device identifier, the initial transmission time of the current broadcast transmission segment, the end transmission time of the current broadcast transmission segment, and the broadcast.
- the transmission time and frequency parameters of the data packet may be adopted to implement calculation of channel environment parameters in the surrounding environment, and then adaptively adjust the transmission frequency according to channel environment parameters.
- FIG. 5 is a structural block diagram of an apparatus for controlling a transmission frequency of a broadcast data packet according to an embodiment of the present invention.
- the apparatus may be implemented in the implementation environment shown in FIG. 1 by software, hardware, or a combination of the two. Part or all of the medium terminal, the terminal being configured to receive the broadcast data packet in the broadcast receiving section to transmit the broadcast data packet in the broadcast transmitting section.
- the apparatus may include a data packet receiving module 510, a parameter determining module 520, and a frequency determining module 530.
- the data packet receiving module 510 is configured to receive broadcast data packets sent by other terminals in the at least one broadcast receiving segment.
- the parameter determining module 520 is configured to determine, according to the broadcast data packet sent by the other terminal, a channel environment parameter of an area where the terminal is located, where the channel environment parameter includes a data packet time density and/or a data packet transmission success rate.
- the frequency determining module 530 is configured to determine, according to the channel environment parameter, a first sending frequency, where the first sending frequency is that the terminal sends a broadcast data packet in a broadcast sending segment after the at least one broadcast receiving segment The frequency of transmission.
- the apparatus for controlling the transmission frequency of the broadcast data packet provides that the terminal receives the broadcast data packet in the broadcast receiving segment and transmits the broadcast data packet in the broadcast transmission segment, and the terminal receives the broadcast data packet in the at least one broadcast receiving segment.
- the broadcast data packet sent by the other terminal determines the channel environment parameter of the area where the terminal is located according to the broadcast data packet sent by the other terminal, and the channel environment parameter includes the data packet time density and/or the data packet transmission success rate, and further according to the channel environment.
- the parameter determines the transmission frequency of the broadcast data packet sent by the terminal in the broadcast transmission segment after the at least one broadcast receiving segment; and solves the problem that the transmission frequency of the broadcast data packet sent by the terminal in the prior art lacks flexibility;
- the transmission frequency is adaptively adjusted according to the channel environment parameters, and the flexibility of transmitting the broadcast data packet is improved.
- FIG. 6A is a structural block diagram of an apparatus for controlling a transmission frequency of a broadcast data packet according to another embodiment of the present invention.
- the apparatus may be implemented by using software, hardware, or a combination of the two.
- the terminal is configured to receive the broadcast data packet in the broadcast receiving section to transmit the broadcast data packet in the broadcast transmitting section.
- the apparatus may include a data packet receiving module 510, a parameter determining module 520, and a frequency determining module 530.
- the data packet receiving module 510 is configured to receive broadcast data packets sent by other terminals in the at least one broadcast receiving segment.
- the parameter determining module 520 is configured to determine, according to the broadcast data packet sent by the other terminal, a channel environment parameter of an area where the terminal is located, where the channel environment parameter includes a data packet time density and/or a data packet transmission success rate.
- the channel environment parameter includes the data packet time density
- the parameter determining module 520 includes: a density calculating unit 520a.
- the density calculation unit 520a is configured to calculate the data packet time density ⁇ according to the following formula:
- N r represents the number of data packet receptions of the terminal in the at least one broadcast receiving segment
- T r represents the sum of the reception durations of the at least one broadcast receiving segment
- the channel environment parameter includes the data packet transmission success rate
- the parameter determination module 520 includes: a number determining unit 520b and a success rate calculating unit 520c.
- the number determining unit 520b is configured to determine, according to the broadcast data packet sent by each other terminal, the number of theoretical data transmission times of each other terminal in the at least one broadcast receiving segment.
- the success rate calculation unit 520c is configured to calculate the data packet transmission success rate S according to the following formula:
- N r represents the number of data packet receptions of the terminal in the at least one broadcast receiving segment
- P represents that the terminal receives broadcast data packets from P other terminals in the at least one broadcast receiving segment
- P ⁇ 1 and P is an integer
- j ⁇ [1, P] and j is an integer
- N t represents the sum of the number of theoretical transmissions of packets of the P other terminals in the at least one broadcast receiving segment.
- the parameter determining module 520 may include only the density calculating unit 520a, or only the number determining unit 520b and the success calculating unit 520c, and may also include the density calculating unit 520a.
- the type and number of functional modules included in the parameter determination module 520 depends on the type and number of parameters included in the channel environment parameters.
- the frequency determining module 530 is configured to determine, according to the channel environment parameter, a first sending frequency, where the first sending frequency is that the terminal sends a broadcast data packet in a broadcast sending segment after the at least one broadcast receiving segment The frequency of transmission.
- the frequency determining module 530 is different according to the type and number of parameters included in the channel environment parameter.
- the functional modules included are also different. details as follows:
- the channel environment parameter includes only the data packet time density.
- the frequency determining module 530 includes: a first uplinking unit 530a and a first downlinking unit 530b.
- the first uplinking unit 530a is configured to use, when the time density of the data packet is less than the first density threshold, a transmission frequency that is higher than the second transmission frequency as the first transmission frequency.
- the first down-conversion unit 530b is configured to use, when the data packet time density is greater than the second density threshold, a transmission frequency lower than the second transmission frequency as the first transmission frequency.
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, and the first density threshold is ⁇ the second density threshold.
- the channel environment parameter includes only the data packet transmission success rate.
- the frequency determination module 530 includes: a second uplinking unit 530c and a second downlinking unit 530d.
- the second uplinking unit 530c is configured to use, when the data packet transmission success rate is greater than the first success rate threshold, a transmission frequency that is higher than the second transmission frequency as the first transmission frequency.
- the second down-conversion unit 530d is configured to use, when the data packet transmission success rate is less than the second success rate threshold, a transmission frequency lower than the second transmission frequency as the first transmission frequency.
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, and the first success rate threshold ⁇ the second success rate Threshold.
- the channel environment parameter includes the data packet time density and the data packet transmission success rate
- the frequency determining module 530 includes: a third uplinking unit 530e and a third Downgrade unit 530f.
- the third uplinking unit 530e is configured to use a transmission frequency higher than the second transmission frequency when the data packet time density is less than the first density threshold and the data packet transmission success rate is greater than the first success rate threshold. As the first transmission frequency.
- the third lowering unit 530f is configured to use a lower transmission rate than the second transmission frequency when the data packet time density is greater than the second density threshold and/or the data packet transmission success rate is less than the second success rate threshold.
- the frequency is taken as the first transmission frequency.
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, where the first density threshold ⁇ the second density threshold, The first success rate threshold ⁇ the second success rate threshold.
- the apparatus provided in this embodiment further includes: a duration determining module 540 and a data packet sending module 550.
- the duration determining module 540 is configured to randomly determine a sending duration of the broadcast sending segment after the at least one broadcast receiving segment.
- the data packet sending module 550 is configured to send a broadcast data packet according to the first sending frequency and the sending duration after the at least one broadcast receiving segment ends.
- the apparatus provided in this embodiment further includes: a duration configuration module 560.
- the duration configuration module 560 is configured to configure a reception duration of each broadcast receiving segment to be greater than a reciprocal of a preset minimum transmission frequency, and receive the broadcast receiving segment of the terminal and receive the broadcast receiving segment of the other terminal. The duration is equal.
- the function module shown in FIG. 6A can be separately implemented as a device for controlling the transmission frequency of a broadcast data packet provided by an embodiment of the present invention; or, FIG. 6A, FIG. 6B and FIG.
- the function module shown in FIG. 6D can be implemented as a device for controlling the transmission frequency of the broadcast data packet provided by the embodiment of the present invention; or the functional modules shown in FIG. 6A, FIG. 6C and FIG. 6E can be combined and implemented to provide the embodiment of the present invention.
- the device for controlling the transmission frequency of the broadcast data packet; or the functional modules shown in FIG. 6A, FIG. 6B, FIG. 6C and FIG. 6F can be combined to implement the device for controlling the transmission frequency of the broadcast data packet provided by the embodiment of the present invention.
- a combination of different functional modules may be selected according to actual requirements, which is not specifically limited in this embodiment.
- the apparatus for controlling the transmission frequency of the broadcast data packet provides that the terminal receives the broadcast data packet in the broadcast receiving segment and transmits the broadcast data packet in the broadcast transmission segment, and the terminal receives the broadcast data packet in the at least one broadcast receiving segment.
- the broadcast data packet sent by the other terminal determines the channel environment parameter of the area where the terminal is located according to the broadcast data packet sent by the other terminal, and the channel environment parameter includes the data packet time density and/or the data packet transmission success rate, and further according to the channel environment.
- the parameter determines the transmission frequency of the broadcast data packet sent by the terminal in the broadcast transmission segment after the at least one broadcast receiving segment; and solves the problem that the transmission frequency of the broadcast data packet sent by the terminal in the prior art lacks flexibility;
- the transmission frequency is adaptively adjusted according to the channel environment parameters, and the flexibility of transmitting the broadcast data packet is improved.
- the apparatus for controlling the transmission frequency of the broadcast data packet provided by this embodiment further indicates the channel environment parameter by the data packet time density and/or the data packet transmission success rate.
- the two are related and there are certain differences.
- Both the packet time density and the packet transmission success rate reflect the number of broadcast packets transmitted by each other terminal in the area in which the terminal is located in a unit time.
- the packet time density is mainly used to measure the base station load strength
- the packet transmission success rate is mainly used to measure the channel. Contention strength.
- the terminal adaptively adjusts the transmission frequency in the subsequent broadcast transmission segment by using any one or all of the above two parameters measured in the broadcast receiving segment, thereby effectively controlling the base station load strength and channel contention strength of the surrounding environment, and ensuring The reliability and success rate of positioning, while balancing the energy consumption between various network devices, prolongs the network life.
- FIG. 7A is a structural block diagram of an apparatus for controlling a transmission frequency of a broadcast data packet according to still another embodiment of the present invention.
- the apparatus may be implemented by using software, hardware, or a combination of the two.
- the terminal is configured to receive the broadcast data packet in the broadcast receiving section to transmit the broadcast data packet in the broadcast transmitting section.
- the apparatus may include a data packet receiving module 510, a parameter determining module 520, and a frequency determining module 530.
- the data packet receiving module 510 is configured to receive broadcast data packets sent by other terminals in the at least one broadcast receiving segment.
- the parameter determining module 520 is configured to determine, according to the broadcast data packet sent by the other terminal, a channel environment parameter of an area where the terminal is located, where the channel environment parameter includes a data packet time density and/or a data packet transmission success rate.
- the frequency determining module 530 is configured to determine, according to the channel environment parameter, a first sending frequency, where the first sending frequency is that the terminal sends a broadcast data packet in a broadcast sending segment after the at least one broadcast receiving segment The frequency of transmission.
- the function module included in the parameter determination module 520 has been described and illustrated in detail in the embodiment shown in FIG. 6A, and details are not described herein again.
- the frequency determining module 530 specifically includes: a frequency acquiring unit 531 and a frequency determining unit 532.
- the frequency obtaining unit 531 is configured to determine, according to the frequency parameter carried in the broadcast data packet sent by each other terminal, the sending frequency of the broadcast data packet sent by each other terminal.
- the frequency determining unit 532 is configured to determine the first sending frequency according to the channel environment parameter, the second sending frequency, and the sending frequency of each other terminal.
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment.
- the functional modules included in the frequency determining unit 532 are also different depending on the type and number of parameters included in the channel environment parameters. details as follows:
- the frequency determining unit 532 includes: a first uppering subunit 532a and a first lowering subunit 532b.
- the first upper adjustment sub-unit 532a is configured to adopt a second ratio when the data packet time density is less than a third density threshold and the second transmission frequency is not higher than a transmission frequency of any other terminal.
- the transmission frequency with a high transmission frequency is taken as the first transmission frequency.
- the first down-conversion sub-unit 532b is configured to adopt a second ratio when the data packet time density is greater than a fourth density threshold and the second transmission frequency is not lower than a transmission frequency of any other terminal.
- the transmission frequency with a low transmission frequency is taken as the first transmission frequency.
- the channel environment parameter includes only the data packet transmission success rate
- the frequency determining unit 532 includes: a second upper adjustment sub-unit 532c and a second lower adjustment sub-unit 532d.
- the second upper adjustment sub-unit 532c is configured to use, when the data packet transmission success rate is greater than a third success rate threshold, and the second transmission frequency is not higher than a transmission frequency of any other terminal,
- the transmission frequency with the second transmission frequency is the first transmission frequency.
- the second down-conversion sub-unit 532d is configured to use when the data packet transmission success rate is less than a fourth success-through threshold and the second transmission frequency is not lower than a transmission frequency of any other terminal.
- the second transmission frequency is low as the first transmission frequency.
- the channel environment parameter includes the data packet time density and the data packet transmission success rate
- the frequency determining unit 532 includes: a third upper adjustment sub-unit 532e and a The sub-unit 532f is lowered.
- the third upper adjustment sub-unit 532e is configured to: when the data packet time density is less than a third density threshold, and the data packet transmission success rate is greater than a third success rate threshold, and the second transmission frequency is not higher than any When the transmission frequency of one other terminal is used, a transmission frequency higher than the second transmission frequency is used as the first transmission frequency.
- the third down-conversion sub-unit 532f is configured to: when the data packet time density is greater than a fourth density threshold, and/or the data packet transmission success rate is less than a fourth success rate threshold, and the second transmission frequency is not low When the transmission frequency of any other terminal is used, a transmission frequency lower than the second transmission frequency is used as the first transmission frequency.
- the third density threshold ⁇ the fourth density threshold, the third success threshold ⁇ The fourth success rate threshold is described.
- the apparatus provided in this embodiment further includes: a duration determining module 540 and a data packet sending module 550.
- the duration determining module 540 is configured to randomly determine a sending duration of the broadcast sending segment after the at least one broadcast receiving segment.
- the data packet sending module 550 is configured to send a broadcast data packet according to the first sending frequency and the sending duration after the at least one broadcast receiving segment ends.
- the apparatus provided in this embodiment further includes: a duration configuration module 560.
- the duration configuration module 560 is configured to configure a reception duration of each broadcast receiving segment to be greater than a reciprocal of a preset minimum transmission frequency, and receive the broadcast receiving segment of the terminal and receive the broadcast receiving segment of the other terminal. The duration is equal.
- the function module shown in FIG. 7A can be separately implemented as a device for controlling the transmission frequency of a broadcast data packet provided by an embodiment of the present invention; or, FIG. 7A, FIG. 6B and FIG.
- the function module shown in FIG. 7B can be implemented as a device for controlling the transmission frequency of the broadcast data packet provided by the embodiment of the present invention; or the functional modules shown in FIG. 7A, FIG. 6C and FIG. 7C can be combined and implemented to provide the embodiment of the present invention.
- the device for controlling the transmission frequency of the broadcast data packet; or the function module shown in FIG. 7A, FIG. 6B, FIG. 6C, and FIG. 7D can be combined to implement the device for controlling the transmission frequency of the broadcast data packet provided by the embodiment of the present invention.
- a combination of different functional modules may be selected according to actual requirements, which is not specifically limited in this embodiment.
- the apparatus for controlling the transmission frequency of the broadcast data packet provides that the terminal receives the broadcast data packet in the broadcast receiving segment and transmits the broadcast data packet in the broadcast transmission segment, and the terminal receives the broadcast data packet in the at least one broadcast receiving segment.
- the broadcast data packet sent by the other terminal determines the channel environment parameter of the area where the terminal is located according to the broadcast data packet sent by the other terminal, and the channel environment parameter includes the data packet time density and/or the data packet transmission success rate, and further according to the channel environment.
- the parameter determines the transmission frequency of the broadcast data packet sent by the terminal in the broadcast transmission segment after the at least one broadcast receiving segment; and solves the problem that the transmission frequency of the broadcast data packet sent by the terminal in the prior art lacks flexibility;
- the transmission frequency is adaptively adjusted according to the channel environment parameters, and the flexibility of transmitting the broadcast data packet is improved.
- the apparatus for controlling the transmission frequency of the broadcast data packet provided by the embodiment before adjusting the transmission frequency of the terminal, the terminal is also in the previous broadcast transmission segment.
- the transmission frequency is compared with the transmission frequency of other terminals.
- the terminal raises the transmission frequency.
- the terminal lowers the transmission frequency when the frequency of transmission of the terminal in the previous broadcast transmission segment is not lower than the transmission frequency of any other terminal. It ensures that the transmission frequency of each terminal in the surrounding area is in a relatively balanced state, which is beneficial to the energy efficiency balance of each terminal, and is advantageous for balancing the positioning effect on each terminal.
- the apparatus for controlling the transmission frequency of the broadcast data packet provided by the foregoing embodiment when configured to transmit and receive the broadcast data packet, only the division of each functional module described above is used as an example. In actual applications, the device may be configured as needed. The above function assignment is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
- the apparatus for controlling the transmission frequency of the broadcast data packet provided by the foregoing embodiment is the same as the method embodiment of the method for controlling the transmission frequency of the broadcast data packet provided by the following embodiments, and the specific implementation process is described in the method implementation. For example, I won't go into details here.
- FIG. 8 is a structural block diagram of a terminal according to an embodiment of the present invention.
- the terminal 800 is configured to receive a broadcast data packet in a broadcast receiving section to transmit a broadcast data packet in a broadcast transmission section.
- the terminal 800 includes a bus 810, and a processor 820, a memory 830, and a transceiver 840 that communicate via a bus 810.
- the memory 830 is used to store one or more instructions that are configured to be executed by the processor 820. among them:
- the transceiver 840 is configured to receive broadcast data packets sent by other terminals in at least one broadcast receiving segment.
- the processor 820 is configured to determine, according to the broadcast data packet sent by the other terminal, a channel environment parameter of an area where the terminal is located, where the channel environment parameter includes a data packet time density and/or a data packet transmission success rate.
- the processor 820 is further configured to determine, according to the channel environment parameter, a first sending frequency, where the first sending frequency is that the terminal sends broadcast data in a broadcast sending segment after the at least one broadcast receiving segment The frequency of transmission of the packet.
- the terminal provided by the embodiment provides a broadcast data packet in a broadcast transmission segment by receiving a broadcast data packet in a broadcast receiving segment, and the terminal receives a broadcast data packet sent by another terminal in at least one broadcast receiving segment, according to the terminal.
- the broadcast data packet sent by the other terminal determines a channel environment parameter of the area where the terminal is located, where the channel environment parameter includes a data packet time density and/or a data packet transmission success rate, and then determining, according to the channel environment parameter, the terminal at the foregoing at least one Wide after the broadcast receiving segment
- the transmission frequency of the broadcast data packet is transmitted in the broadcast transmission segment; the problem of lack of flexibility in the transmission frequency of the broadcast data packet transmitted by the terminal in the prior art is solved; the transmission frequency is adaptively adjusted according to the channel environment parameter, and the transmission frequency is improved.
- the channel environment parameter includes only the data packet time density
- Determining, according to the channel environment parameter, the first sending frequency including:
- a transmission frequency higher than the second transmission frequency is used as the first transmission frequency
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, and the first density threshold is ⁇ the second density threshold.
- the channel environment parameter includes only the data packet transmission success rate
- Determining, according to the channel environment parameter, the first sending frequency including:
- a transmission frequency higher than the second transmission frequency is used as the first transmission frequency
- a lower transmission frequency than the second transmission frequency is used as the first transmission frequency
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, and the first success rate threshold ⁇ the second success rate Threshold.
- the channel environment parameter includes the data packet time density and the data packet transmission success rate
- Determining, according to the channel environment parameter, the first sending frequency including:
- a higher transmission frequency than the second transmission frequency is used as the first transmission frequency
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment, where the first density threshold ⁇ the second density threshold, The first success rate threshold ⁇ the second success rate threshold.
- the determining the first sending frequency according to the channel environment parameter includes:
- the second transmission frequency is a transmission frequency of the broadcast data packet sent by the terminal in a broadcast transmission segment before the at least one broadcast receiving segment.
- the channel environment parameter includes only the data packet time density
- Determining, according to the channel environment parameter, the second sending frequency, and the sending frequency of each other terminal, the first sending frequency including:
- a transmission frequency higher than the second transmission frequency is used as the First transmission frequency
- the channel environment parameter includes only the data packet transmission success rate
- Determining, according to the channel environment parameter, the second sending frequency, and the sending frequency of each other terminal, the first sending frequency including:
- a transmission frequency higher than the second transmission frequency is used as the transmission frequency.
- the first transmission frequency or,
- the channel environment parameter includes the data packet time density and the data packet transmission success rate
- Determining, according to the channel environment parameter, the second sending frequency, and the sending frequency of each other terminal, the first sending frequency including:
- the second transmission frequency is a transmission frequency with a high transmission frequency as the first transmission frequency
- the second transmission frequency is not lower than the transmission frequency of any one of the other terminals, Using a lower transmission frequency than the second transmission frequency as the first transmission frequency;
- the channel environment parameter includes the data packet time density
- Determining, according to the broadcast data packet sent by the other terminal, a channel environment parameter of an area where the terminal is located including:
- N r represents the number of data packet receptions of the terminal in the at least one broadcast receiving segment
- T r represents the sum of the reception durations of the at least one broadcast receiving segment
- the channel environment parameter includes the data packet transmission success rate
- Determining, according to the broadcast data packet sent by the other terminal, a channel environment parameter of an area where the terminal is located including:
- N r represents the number of data packet receptions of the terminal in the at least one broadcast receiving segment
- P represents that the terminal receives broadcast data packets from P other terminals in the at least one broadcast receiving segment
- P ⁇ 1 and P is an integer
- j ⁇ [1, P] and j is an integer
- N t represents the sum of the number of theoretical transmissions of packets of the P other terminals in the at least one broadcast receiving segment.
- the processor 820 is further configured to randomly determine a sending duration of the broadcast sending segment after the at least one broadcast receiving segment;
- the transceiver 840 is further configured to send a broadcast data packet according to the first sending frequency and the sending duration after the at least one broadcast receiving segment ends.
- the processor 820 is further configured to configure a reciprocal of each broadcast receiving segment to be greater than a preset minimum transmission frequency, and a receiving duration of the broadcast receiving segment of the terminal and a broadcast receiving segment of the other terminal The receiving time is equal.
- the terminal provided in this embodiment further indicates the channel environment parameter by using a data packet time density and/or a data packet transmission success rate.
- the two are related and there are certain differences.
- Both the packet time density and the packet transmission success rate reflect the number of broadcast packets transmitted by each other terminal in the area in which the terminal is located in a unit time.
- the packet time density is mainly used to measure the base station load strength
- the packet transmission success rate is mainly used to measure the channel contention strength.
- the terminal adaptively adjusts the transmission frequency in the subsequent broadcast transmission segment by using any one or all of the above two parameters measured in the broadcast receiving segment, thereby effectively controlling the base station load strength and channel contention strength of the surrounding environment, and ensuring The reliability and success rate of positioning, while balancing the energy consumption between various network devices, prolongs the network life.
- the terminal before adjusting the transmission frequency of the terminal, compares the transmission frequency in the previous broadcast transmission segment with the transmission frequency of other terminals, when the terminal compares The terminal raises the transmission frequency when the transmission frequency in the previous broadcast transmission segment is not higher than the transmission frequency of any other terminal; or, when the terminal transmits the frequency in the previous broadcast transmission segment is not lower than the random When the transmission frequency of one other terminal is used, the terminal lowers the transmission frequency. It ensures that the transmission frequency of each terminal in the surrounding area is in a relatively balanced state, which is beneficial to the energy efficiency balance of each terminal, and is advantageous for balancing the positioning effect on each terminal.
- a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
- the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.
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Abstract
Description
频度等级 | 发送频度(p/s) |
1 | 0.5 |
2 | 1 |
3 | 2 |
4 | 4 |
频度等级 | 发送频度(p/s) |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 4 |
序号 | 设备标识 | 数据包理论发送总次数 | 发送序号 | 频度等级 |
1 | 00 00 0A 01 | 20 | 4 | 4 |
2 | 00 00 0A 02 | 22 | 17 | 4 |
3 | 00 00 0A 03 | 20 | 11 | 4 |
… | … | … | … | … |
Claims (36)
- 一种控制广播数据包的发送频度的方法,用于终端,所述终端被配置为在广播接收段接收广播数据包在广播发送段发送广播数据包,其特征在于,所述方法包括:在至少一个广播接收段内接收其它终端发送的广播数据包;根据所述其它终端发送的广播数据包确定所述终端所处区域的信道环境参数,所述信道环境参数包括数据包时间密度和/或数据包发送成功率;根据所述信道环境参数确定第一发送频度,所述第一发送频度是所述终端在所述至少一个广播接收段之后的广播发送段内发送广播数据包的发送频度。
- 根据权利要求1所述的方法,其特征在于,所述信道环境参数只包括所述数据包时间密度;所述根据所述信道环境参数确定第一发送频度,包括:当所述数据包时间密度小于第一密度阈值时,采用比第二发送频度高的发送频度作为所述第一发送频度;或,当所述数据包时间密度大于第二密度阈值时,采用比第二发送频度低的发送频度作为所述第一发送频度;其中,所述第二发送频度是所述终端在所述至少一个广播接收段之前的广播发送段内发送广播数据包的发送频度,所述第一密度阈值≤所述第二密度阈值。
- 根据权利要求1所述的方法,其特征在于,所述信道环境参数只包括所述数据包发送成功率;所述根据所述信道环境参数确定第一发送频度,包括:当所述数据包发送成功率大于第一成功率阈值时,采用比第二发送频度高的发送频度作为所述第一发送频度;或,当所述数据包发送成功率小于第二成功率阈值时,采用比第二发送频度低的发送频度作为所述第一发送频度;其中,所述第二发送频度是所述终端在所述至少一个广播接收段之前的广播发送段内发送广播数据包的发送频度,所述第一成功率阈值≥所述第二成功 率阈值。
- 根据权利要求1所述的方法,其特征在于,所述信道环境参数包括所述数据包时间密度和所述数据包发送成功率,所述根据所述信道环境参数确定第一发送频度,包括:当所述数据包时间密度小于第一密度阈值且所述数据包发送成功率大于第一成功率阈值时,采用比第二发送频度高的发送频度作为所述第一发送频度;或,当所述数据包时间密度大于第二密度阈值和/或所述数据包发送成功率小于第二成功率阈值时,采用比第二发送频度低的发送频度作为所述第一发送频度;其中,所述第二发送频度是所述终端在所述至少一个广播接收段之前的广播发送段内发送广播数据包的发送频度,所述第一密度阈值≤所述第二密度阈值,所述第一成功率阈值≥所述第二成功率阈值。
- 根据权利要求1所述的方法,其特征在于,所述根据所述信道环境参数确定第一发送频度,包括:根据每个其它终端发送的广播数据包中携带的频度参数确定每个其它终端发送广播数据包的发送频度;根据所述信道环境参数、第二发送频度以及每个其它终端的发送频度确定所述第一发送频度;其中,所述第二发送频度是所述终端在所述至少一个广播接收段之前的广播发送段内发送广播数据包的发送频度。
- 根据权利要求5所述的方法,其特征在于,所述信道环境参数只包括所述数据包时间密度;所述根据所述信道环境参数、第二发送频度以及每个其它终端的发送频度确定所述第一发送频度,包括:当所述数据包时间密度小于第三密度阈值且所述第二发送频度不高于任意一个其它终端的发送频度时,采用比所述第二发送频度高的发送频度作为所述第一发送频度;或,当所述数据包时间密度大于第四密度阈值且所述第二发送频度不低于任意 一个其它终端的发送频度时,采用比所述第二发送频度低的发送频度作为所述第一发送频度;其中,所述第三密度阈值≤所述第四密度阈值。
- 根据权利要求5所述的方法,其特征在于,所述信道环境参数只包括所述数据包发送成功率;所述根据所述信道环境参数、第二发送频度以及每个其它终端的发送频度确定所述第一发送频度,包括:当所述数据包发送成功率大于第三成功率阈值且所述第二发送频度不高于任意一个其它终端的发送频度时,采用比所述第二发送频度高的发送频度作为所述第一发送频度;或,当所述数据包发送成功率小于第四成功率阈值且所述第二发送频度不低于任意一个其它终端的发送频度时,采用比所述第二发送频度低的发送频度作为所述第一发送频度;其中,所述第三成功率阈值≥所述第四成功率阈值。
- 根据权利要求5所述的方法,其特征在于,所述信道环境参数包括所述数据包时间密度和所述数据包发送成功率;所述根据所述信道环境参数、第二发送频度以及每个其它终端的发送频度确定所述第一发送频度,包括:当所述数据包时间密度小于第三密度阈值和所述数据包发送成功率大于第三成功率阈值、且所述第二发送频度不高于任意一个其它终端的发送频度时,采用比所述第二发送频度高的发送频度作为所述第一发送频度;或,当所述数据包时间密度大于第四密度阈值和/或所述数据包发送成功率小于第四成功率阈值、且所述第二发送频度不低于任意一个其它终端的发送频度时,采用比所述第二发送频度低的发送频度作为所述第一发送频度;其中,所述第三密度阈值≤所述第四密度阈值,所述第三成功率阈值≥所述第四成功率阈值。
- 根据权利要求1至10任一所述的方法,其特征在于,所述方法还包括:随机确定所述至少一个广播接收段之后的广播发送段的发送时长;在所述至少一个广播接收段结束后,按照所述第一发送频度和所述发送时长发送广播数据包。
- 根据权利要求1至11任一所述的方法,其特征在于,所述方法还包括:配置每个广播接收段的接收时长大于预先设定的最小发送频度的倒数,且所述终端的广播接收段的接收时长与所述其它终端的广播接收段的接收时长相等。
- 一种控制广播数据包的发送频度的装置,用于终端,所述终端被配置为在广播接收段接收广播数据包在广播发送段发送广播数据包,其特征在于,所述装置包括:数据包接收模块,用于在至少一个广播接收段内接收其它终端发送的广播数据包;参数确定模块,用于根据所述其它终端发送的广播数据包确定所述终端所处区域的信道环境参数,所述信道环境参数包括数据包时间密度和/或数据包发送成功率;频度确定模块,用于根据所述信道环境参数确定第一发送频度,所述第一发送频度是所述终端在所述至少一个广播接收段之后的广播发送段内发送广播数据包的发送频度。
- 根据权利要求13所述的装置,其特征在于,所述信道环境参数只包括所述数据包时间密度;所述频度确定模块,包括:第一上调单元和第一下调单元;所述第一上调单元,用于当所述数据包时间密度小于第一密度阈值时,采用比第二发送频度高的发送频度作为所述第一发送频度;所述第一下调单元,用于当所述数据包时间密度大于第二密度阈值时,采用比第二发送频度低的发送频度作为所述第一发送频度;其中,所述第二发送频度是所述终端在所述至少一个广播接收段之前的广播发送段内发送广播数据包的发送频度,所述第一密度阈值≤所述第二密度阈值。
- 根据权利要求13所述的装置,其特征在于,所述信道环境参数只包括所述数据包发送成功率;所述频度确定模块,包括:第二上调单元和第二下调单元;所述第二上调单元,用于当所述数据包发送成功率大于第一成功率阈值时,采用比第二发送频度高的发送频度作为所述第一发送频度;所述第二下调单元,用于当所述数据包发送成功率小于第二成功率阈值时,采用比第二发送频度低的发送频度作为所述第一发送频度;其中,所述第二发送频度是所述终端在所述至少一个广播接收段之前的广 播发送段内发送广播数据包的发送频度,所述第一成功率阈值≥所述第二成功率阈值。
- 根据权利要求13所述的装置,其特征在于,所述信道环境参数包括所述数据包时间密度和所述数据包发送成功率,所述频度确定模块,包括:第三上调单元和第三下调单元;所述第三上调单元,用于当所述数据包时间密度小于第一密度阈值且所述数据包发送成功率大于第一成功率阈值时,采用比第二发送频度高的发送频度作为所述第一发送频度;所述第三下调单元,用于当所述数据包时间密度大于第二密度阈值和/或所述数据包发送成功率小于第二成功率阈值时,采用比第二发送频度低的发送频度作为所述第一发送频度;其中,所述第二发送频度是所述终端在所述至少一个广播接收段之前的广播发送段内发送广播数据包的发送频度,所述第一密度阈值≤所述第二密度阈值,所述第一成功率阈值≥所述第二成功率阈值。
- 根据权利要求13所述的装置,其特征在于,所述频度确定模块,包括:频度获取单元和频度确定单元;所述频度获取单元,用于根据每个其它终端发送的广播数据包中携带的频度参数确定每个其它终端发送广播数据包的发送频度;所述频度确定单元,用于根据所述信道环境参数、第二发送频度以及每个其它终端的发送频度确定所述第一发送频度;其中,所述第二发送频度是所述终端在所述至少一个广播接收段之前的广播发送段内发送广播数据包的发送频度。
- 根据权利要求17所述的装置,其特征在于,所述信道环境参数只包括所述数据包时间密度;所述频度确定单元,包括:第一上调子单元和第一下调子单元;所述第一上调子单元,用于当所述数据包时间密度小于第三密度阈值且所述第二发送频度不高于任意一个其它终端的发送频度时,采用比所述第二发送频度高的发送频度作为所述第一发送频度;所述第一下调子单元,用于当所述数据包时间密度大于第四密度阈值且所述第二发送频度不低于任意一个其它终端的发送频度时,采用比所述第二发送频度低的发送频度作为所述第一发送频度;其中,所述第三密度阈值≤所述第四密度阈值。
- 根据权利要求17所述的装置,其特征在于,所述信道环境参数只包括所述数据包发送成功率;所述频度确定单元,包括:第二上调子单元和第二下调子单元;所述第二上调子单元,用于当所述数据包发送成功率大于第三成功率阈值且所述第二发送频度不高于任意一个其它终端的发送频度时,采用比所述第二发送频度高的发送频度作为所述第一发送频度;所述第二下调子单元,用于当所述数据包发送成功率小于第四成功率阈值且所述第二发送频度不低于任意一个其它终端的发送频度时,采用比所述第二发送频度低的发送频度作为所述第一发送频度;其中,所述第三成功率阈值≥所述第四成功率阈值。
- 根据权利要求17所述的装置,其特征在于,所述信道环境参数包括所述数据包时间密度和所述数据包发送成功率;所述频度确定单元,包括:第三上调子单元和第三下调子单元;所述第三上调子单元,用于当所述数据包时间密度小于第三密度阈值和所述数据包发送成功率大于第三成功率阈值、且所述第二发送频度不高于任意一个其它终端的发送频度时,采用比所述第二发送频度高的发送频度作为所述第一发送频度;所述第三下调子单元,用于当所述数据包时间密度大于第四密度阈值和/或所述数据包发送成功率小于第四成功率阈值、且所述第二发送频度不低于任意一个其它终端的发送频度时,采用比所述第二发送频度低的发送频度作为所述第一发送频度;其中,所述第三密度阈值≤所述第四密度阈值,所述第三成功率阈值≥所述第四成功率阈值。
- 根据权利要求13、15、16、17、19或20任一所述的装置,其特征在于,所述信道环境参数包括所述数据包发送成功率;所述参数确定模块,包括:次数确定单元和成功率计算单元;所述次数确定单元,用于根据每个其它终端发送的广播数据包确定每个其它终端在所述至少一个广播接收段内的数据包理论发送次数;所述成功率计算单元,用于按照如下公式计算所述数据包发送成功率S:其中,Nr表示所述终端在所述至少一个广播接收段内的数据包接收次数;P表示所述终端在所述至少一个广播接收段内接收到来自P个其它终端的广播数据包,P≥1且P为整数,j∈[1,P]且j为整数;Nt表示所述P个其它终端在所述至少一个广播接收段内的数据包理论发送次数之和。
- 根据权利要求13至22任一所述的装置,其特征在于,所述装置还包括:时长确定模块,用于随机确定所述至少一个广播接收段之后的广播发送段的发送时长;数据包发送模块,用于在所述至少一个广播接收段结束后,按照所述第一发送频度和所述发送时长发送广播数据包。
- 根据权利要求13至23任一所述的装置,其特征在于,所述装置还包括:时长配置模块,用于配置每个广播接收段的接收时长大于预先设定的最小发送频度的倒数,且所述终端的广播接收段的接收时长与所述其它终端的广播 接收段的接收时长相等。
- 一种终端,所述终端被配置为在广播接收段接收广播数据包在广播发送段发送广播数据包,其特征在于,所述终端包括:总线,以及通过所述总线通信的处理器、存储器、收发器,其中,所述存储器用于存储一个或者一个以上的指令,所述指令被配置成由所述处理器执行;所述收发器,用于在至少一个广播接收段内接收其它终端发送的广播数据包;所述处理器,用于根据所述其它终端发送的广播数据包确定所述终端所处区域的信道环境参数,所述信道环境参数包括数据包时间密度和/或数据包发送成功率;所述处理器,还用于根据所述信道环境参数确定第一发送频度,所述第一发送频度是所述终端在所述至少一个广播接收段之后的广播发送段内发送广播数据包的发送频度。
- 根据权利要求25所述的终端,其特征在于,所述信道环境参数只包括所述数据包时间密度;所述根据所述信道环境参数确定第一发送频度,包括:当所述数据包时间密度小于第一密度阈值时,采用比第二发送频度高的发送频度作为所述第一发送频度;或,当所述数据包时间密度大于第二密度阈值时,采用比第二发送频度低的发送频度作为所述第一发送频度;其中,所述第二发送频度是所述终端在所述至少一个广播接收段之前的广播发送段内发送广播数据包的发送频度,所述第一密度阈值≤所述第二密度阈值。
- 根据权利要求25所述的终端,其特征在于,所述信道环境参数只包括所述数据包发送成功率;所述根据所述信道环境参数确定第一发送频度,包括:当所述数据包发送成功率大于第一成功率阈值时,采用比第二发送频度高的发送频度作为所述第一发送频度;或,当所述数据包发送成功率小于第二成功率阈值时,采用比第二发送频度低的发送频度作为所述第一发送频度;其中,所述第二发送频度是所述终端在所述至少一个广播接收段之前的广播发送段内发送广播数据包的发送频度,所述第一成功率阈值≥所述第二成功率阈值。
- 根据权利要求25所述的终端,其特征在于,所述信道环境参数包括所述数据包时间密度和所述数据包发送成功率,所述根据所述信道环境参数确定第一发送频度,包括:当所述数据包时间密度小于第一密度阈值且所述数据包发送成功率大于第一成功率阈值时,采用比第二发送频度高的发送频度作为所述第一发送频度;或,当所述数据包时间密度大于第二密度阈值和/或所述数据包发送成功率小于第二成功率阈值时,采用比第二发送频度低的发送频度作为所述第一发送频度;其中,所述第二发送频度是所述终端在所述至少一个广播接收段之前的广播发送段内发送广播数据包的发送频度,所述第一密度阈值≤所述第二密度阈值,所述第一成功率阈值≥所述第二成功率阈值。
- 根据权利要求25所述的终端,其特征在于,所述根据所述信道环境参数确定第一发送频度,包括:根据每个其它终端发送的广播数据包中携带的频度参数确定每个其它终端发送广播数据包的发送频度;根据所述信道环境参数、第二发送频度以及每个其它终端的发送频度确定所述第一发送频度;其中,所述第二发送频度是所述终端在所述至少一个广播接收段之前的广播发送段内发送广播数据包的发送频度。
- 根据权利要求29所述的终端,其特征在于,所述信道环境参数只包括所述数据包时间密度;所述根据所述信道环境参数、第二发送频度以及每个其它终端的发送频度确定所述第一发送频度,包括:当所述数据包时间密度小于第三密度阈值且所述第二发送频度不高于任意一个其它终端的发送频度时,采用比所述第二发送频度高的发送频度作为所述第一发送频度;或,当所述数据包时间密度大于第四密度阈值且所述第二发送频度不低于任意一个其它终端的发送频度时,采用比所述第二发送频度低的发送频度作为所述第一发送频度;其中,所述第三密度阈值≤所述第四密度阈值。
- 根据权利要求29所述的终端,其特征在于,所述信道环境参数只包括所述数据包发送成功率;所述根据所述信道环境参数、第二发送频度以及每个其它终端的发送频度确定所述第一发送频度,包括:当所述数据包发送成功率大于第三成功率阈值且所述第二发送频度不高于任意一个其它终端的发送频度时,采用比所述第二发送频度高的发送频度作为所述第一发送频度;或,当所述数据包发送成功率小于第四成功率阈值且所述第二发送频度不低于任意一个其它终端的发送频度时,采用比所述第二发送频度低的发送频度作为所述第一发送频度;其中,所述第三成功率阈值≥所述第四成功率阈值。
- 根据权利要求29所述的终端,其特征在于,所述信道环境参数包括所述数据包时间密度和所述数据包发送成功率;所述根据所述信道环境参数、第二发送频度以及每个其它终端的发送频度确定所述第一发送频度,包括:当所述数据包时间密度小于第三密度阈值和所述数据包发送成功率大于第三成功率阈值、且所述第二发送频度不高于任意一个其它终端的发送频度时,采用比所述第二发送频度高的发送频度作为所述第一发送频度;或,当所述数据包时间密度大于第四密度阈值和/或所述数据包发送成功率小于第四成功率阈值、且所述第二发送频度不低于任意一个其它终端的发送频度时,采用比所述第二发送频度低的发送频度作为所述第一发送频度;其中,所述第三密度阈值≤所述第四密度阈值,所述第三成功率阈值≥所 述第四成功率阈值。
- 根据权利要求25、27、28、29、31或32任一所述的终端,其特征在于,所述信道环境参数包括所述数据包发送成功率;所述根据所述其它终端发送的广播数据包确定所述终端所处区域的信道环境参数,包括:根据每个其它终端发送的广播数据包确定每个其它终端在所述至少一个广播接收段内的数据包理论发送次数;按照如下公式计算所述数据包发送成功率S:其中,Nr表示所述终端在所述至少一个广播接收段内的数据包接收次数;P表示所述终端在所述至少一个广播接收段内接收到来自P个其它终端的广播数据包,P≥1且P为整数,j∈[1,P]且j为整数;Nt表示所述P个其它终端在所述至少一个广播接收段内的数据包理论发送次数之和。
- 根据权利要求25至34任一所述的终端,其特征在于,所述处理器,还用于随机确定所述至少一个广播接收段之后的广播发送段的发送时长;所述收发器,还用于在所述至少一个广播接收段结束后,按照所述第一发送频度和所述发送时长发送广播数据包。
- 根据权利要求25至35任一所述的终端,其特征在于,所述处理器,还用于配置每个广播接收段的接收时长大于预先设定的最小发送频度的倒数,且所述终端的广播接收段的接收时长与所述其它终端的广播接收段的接收时长相等。
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