🗊Презентация Bluetooth 101. Training for Plantronics

Категория: Технология
Нажмите для полного просмотра!
Bluetooth 101. Training for Plantronics, слайд №1Bluetooth 101. Training for Plantronics, слайд №2Bluetooth 101. Training for Plantronics, слайд №3Bluetooth 101. Training for Plantronics, слайд №4Bluetooth 101. Training for Plantronics, слайд №5Bluetooth 101. Training for Plantronics, слайд №6Bluetooth 101. Training for Plantronics, слайд №7Bluetooth 101. Training for Plantronics, слайд №8Bluetooth 101. Training for Plantronics, слайд №9Bluetooth 101. Training for Plantronics, слайд №10Bluetooth 101. Training for Plantronics, слайд №11Bluetooth 101. Training for Plantronics, слайд №12Bluetooth 101. Training for Plantronics, слайд №13Bluetooth 101. Training for Plantronics, слайд №14Bluetooth 101. Training for Plantronics, слайд №15Bluetooth 101. Training for Plantronics, слайд №16Bluetooth 101. Training for Plantronics, слайд №17Bluetooth 101. Training for Plantronics, слайд №18Bluetooth 101. Training for Plantronics, слайд №19Bluetooth 101. Training for Plantronics, слайд №20Bluetooth 101. Training for Plantronics, слайд №21Bluetooth 101. Training for Plantronics, слайд №22Bluetooth 101. Training for Plantronics, слайд №23Bluetooth 101. Training for Plantronics, слайд №24Bluetooth 101. Training for Plantronics, слайд №25Bluetooth 101. Training for Plantronics, слайд №26Bluetooth 101. Training for Plantronics, слайд №27Bluetooth 101. Training for Plantronics, слайд №28Bluetooth 101. Training for Plantronics, слайд №29Bluetooth 101. Training for Plantronics, слайд №30Bluetooth 101. Training for Plantronics, слайд №31Bluetooth 101. Training for Plantronics, слайд №32Bluetooth 101. Training for Plantronics, слайд №33Bluetooth 101. Training for Plantronics, слайд №34Bluetooth 101. Training for Plantronics, слайд №35Bluetooth 101. Training for Plantronics, слайд №36Bluetooth 101. Training for Plantronics, слайд №37Bluetooth 101. Training for Plantronics, слайд №38Bluetooth 101. Training for Plantronics, слайд №39Bluetooth 101. Training for Plantronics, слайд №40Bluetooth 101. Training for Plantronics, слайд №41Bluetooth 101. Training for Plantronics, слайд №42Bluetooth 101. Training for Plantronics, слайд №43Bluetooth 101. Training for Plantronics, слайд №44Bluetooth 101. Training for Plantronics, слайд №45Bluetooth 101. Training for Plantronics, слайд №46Bluetooth 101. Training for Plantronics, слайд №47Bluetooth 101. Training for Plantronics, слайд №48Bluetooth 101. Training for Plantronics, слайд №49Bluetooth 101. Training for Plantronics, слайд №50Bluetooth 101. Training for Plantronics, слайд №51Bluetooth 101. Training for Plantronics, слайд №52Bluetooth 101. Training for Plantronics, слайд №53Bluetooth 101. Training for Plantronics, слайд №54Bluetooth 101. Training for Plantronics, слайд №55Bluetooth 101. Training for Plantronics, слайд №56Bluetooth 101. Training for Plantronics, слайд №57Bluetooth 101. Training for Plantronics, слайд №58Bluetooth 101. Training for Plantronics, слайд №59Bluetooth 101. Training for Plantronics, слайд №60Bluetooth 101. Training for Plantronics, слайд №61Bluetooth 101. Training for Plantronics, слайд №62Bluetooth 101. Training for Plantronics, слайд №63Bluetooth 101. Training for Plantronics, слайд №64Bluetooth 101. Training for Plantronics, слайд №65Bluetooth 101. Training for Plantronics, слайд №66Bluetooth 101. Training for Plantronics, слайд №67Bluetooth 101. Training for Plantronics, слайд №68Bluetooth 101. Training for Plantronics, слайд №69Bluetooth 101. Training for Plantronics, слайд №70Bluetooth 101. Training for Plantronics, слайд №71Bluetooth 101. Training for Plantronics, слайд №72Bluetooth 101. Training for Plantronics, слайд №73Bluetooth 101. Training for Plantronics, слайд №74Bluetooth 101. Training for Plantronics, слайд №75Bluetooth 101. Training for Plantronics, слайд №76Bluetooth 101. Training for Plantronics, слайд №77Bluetooth 101. Training for Plantronics, слайд №78Bluetooth 101. Training for Plantronics, слайд №79Bluetooth 101. Training for Plantronics, слайд №80Bluetooth 101. Training for Plantronics, слайд №81Bluetooth 101. Training for Plantronics, слайд №82Bluetooth 101. Training for Plantronics, слайд №83Bluetooth 101. Training for Plantronics, слайд №84Bluetooth 101. Training for Plantronics, слайд №85Bluetooth 101. Training for Plantronics, слайд №86Bluetooth 101. Training for Plantronics, слайд №87Bluetooth 101. Training for Plantronics, слайд №88Bluetooth 101. Training for Plantronics, слайд №89Bluetooth 101. Training for Plantronics, слайд №90Bluetooth 101. Training for Plantronics, слайд №91Bluetooth 101. Training for Plantronics, слайд №92Bluetooth 101. Training for Plantronics, слайд №93Bluetooth 101. Training for Plantronics, слайд №94Bluetooth 101. Training for Plantronics, слайд №95Bluetooth 101. Training for Plantronics, слайд №96Bluetooth 101. Training for Plantronics, слайд №97Bluetooth 101. Training for Plantronics, слайд №98Bluetooth 101. Training for Plantronics, слайд №99Bluetooth 101. Training for Plantronics, слайд №100Bluetooth 101. Training for Plantronics, слайд №101Bluetooth 101. Training for Plantronics, слайд №102Bluetooth 101. Training for Plantronics, слайд №103Bluetooth 101. Training for Plantronics, слайд №104Bluetooth 101. Training for Plantronics, слайд №105Bluetooth 101. Training for Plantronics, слайд №106Bluetooth 101. Training for Plantronics, слайд №107Bluetooth 101. Training for Plantronics, слайд №108Bluetooth 101. Training for Plantronics, слайд №109Bluetooth 101. Training for Plantronics, слайд №110Bluetooth 101. Training for Plantronics, слайд №111Bluetooth 101. Training for Plantronics, слайд №112Bluetooth 101. Training for Plantronics, слайд №113Bluetooth 101. Training for Plantronics, слайд №114Bluetooth 101. Training for Plantronics, слайд №115Bluetooth 101. Training for Plantronics, слайд №116Bluetooth 101. Training for Plantronics, слайд №117Bluetooth 101. Training for Plantronics, слайд №118Bluetooth 101. Training for Plantronics, слайд №119Bluetooth 101. Training for Plantronics, слайд №120Bluetooth 101. Training for Plantronics, слайд №121Bluetooth 101. Training for Plantronics, слайд №122Bluetooth 101. Training for Plantronics, слайд №123Bluetooth 101. Training for Plantronics, слайд №124Bluetooth 101. Training for Plantronics, слайд №125Bluetooth 101. Training for Plantronics, слайд №126
Скачать

Содержание ▲

Вы можете ознакомиться и скачать презентацию на тему Bluetooth 101. Training for Plantronics. Доклад-сообщение содержит 126 слайдов. Презентации для любого класса можно скачать бесплатно. Если материал и наш сайт презентаций Mypresentation Вам понравились – поделитесь им с друзьями с помощью социальных кнопок и добавьте в закладки в своем браузере.

Слайды и текст этой презентации

Слайд 1


Bluetooth 101. Training for Plantronics, слайд №1
Описание слайда:

Слайд 2


Bluetooth 101. Training for Plantronics, слайд №2
Описание слайда:

Слайд 3


Contact Info Roger Garvert Field Application Engineer   2445 Flambeau Drive Naperville, IL  60564
Описание слайда:
Contact Info Roger Garvert Field Application Engineer   2445 Flambeau Drive Naperville, IL  60564

Слайд 4


Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards
Описание слайда:
Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards

Слайд 5


Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards
Описание слайда:
Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards

Слайд 6


What is Bluetooth? Robust unlicensed short range wireless standard It is an open and license free standard for anyone who signs up to be an adopter The standard is presided over by the Special Interest Group (SIG)
Описание слайда:
What is Bluetooth? Robust unlicensed short range wireless standard It is an open and license free standard for anyone who signs up to be an adopter The standard is presided over by the Special Interest Group (SIG)

Слайд 7


What does Bluetooth provide? Provides point-to-point connections Provides ad-hoc networking capabilities Bluetooth specification details how the technology works Bluetooth Profiles detail how specific applications work to ensure interoperability
Описание слайда:
What does Bluetooth provide? Provides point-to-point connections Provides ad-hoc networking capabilities Bluetooth specification details how the technology works Bluetooth Profiles detail how specific applications work to ensure interoperability

Слайд 8


Point-to-point Two devices locate each other Form a connection and transfer data “Wireless cable replacement” scenario The device that initiates the connection is called the Master Any other devices the Master is connected to are referred to as Slaves
Описание слайда:
Point-to-point Two devices locate each other Form a connection and transfer data “Wireless cable replacement” scenario The device that initiates the connection is called the Master Any other devices the Master is connected to are referred to as Slaves

Слайд 9


Point-to-multipoint – the Piconet Two devices create a point-to-point connection A third device comes into range
Описание слайда:
Point-to-multipoint – the Piconet Two devices create a point-to-point connection A third device comes into range

Слайд 10


Identifying Bluetooth Devices Each Bluetooth device is assigned a unique 48-bit MAC address by the Bluetooth SIG This is enough addresses for 281,474,976,710,656 Bluetooth units, this should last a few years even with the optimistic predictions of the analysts! The address is split into three parts: LAP: Lower Address Part - used to generate frequency hop pattern and header sync word UAP: Upper Address Part - used to initialize the HEC and CRC engines NAP: Non-significant Address Part - used to seed the encryption engine
Описание слайда:
Identifying Bluetooth Devices Each Bluetooth device is assigned a unique 48-bit MAC address by the Bluetooth SIG This is enough addresses for 281,474,976,710,656 Bluetooth units, this should last a few years even with the optimistic predictions of the analysts! The address is split into three parts: LAP: Lower Address Part - used to generate frequency hop pattern and header sync word UAP: Upper Address Part - used to initialize the HEC and CRC engines NAP: Non-significant Address Part - used to seed the encryption engine

Слайд 11


Bluetooth Channels A master can create two types of logical channel with a slave device: Asynchronous Connection Less (ACL): Packet Switched System provides a reliable data connection with a best effort bandwidth; depends on radio performance and number of devices in the piconet Synchronous Connection Oriented (SCO): Circuit Switched System provides real time unreliable connection with a guaranteed bandwidth; usually used for voice based applications The Bluetooth connections are limited to 1Mbps across the air (without EDR) This gives a theoretical maximum of ~723kbps of useable data
Описание слайда:
Bluetooth Channels A master can create two types of logical channel with a slave device: Asynchronous Connection Less (ACL): Packet Switched System provides a reliable data connection with a best effort bandwidth; depends on radio performance and number of devices in the piconet Synchronous Connection Oriented (SCO): Circuit Switched System provides real time unreliable connection with a guaranteed bandwidth; usually used for voice based applications The Bluetooth connections are limited to 1Mbps across the air (without EDR) This gives a theoretical maximum of ~723kbps of useable data

Слайд 12


Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards
Описание слайда:
Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards

Слайд 13


Spectrum Usage The 2.4GHz ISM band is a free for all for anyone who wants to use it
Описание слайда:
Spectrum Usage The 2.4GHz ISM band is a free for all for anyone who wants to use it

Слайд 14


Frequency Hopping Spread Spectrum - FHSS Bluetooth splits the spectrum up into 79 1MHz wide channels The Bluetooth radio changes transmission frequency 1600 times a second for a 1 slot packet type The frequency hops follow a pseudo-random sequence that meets the power density requirements for the FCC and other regulatory bodies
Описание слайда:
Frequency Hopping Spread Spectrum - FHSS Bluetooth splits the spectrum up into 79 1MHz wide channels The Bluetooth radio changes transmission frequency 1600 times a second for a 1 slot packet type The frequency hops follow a pseudo-random sequence that meets the power density requirements for the FCC and other regulatory bodies

Слайд 15


Benefits of FHSS Reliability - If a packet is not correctly received on one channel due to interference it is unlikely that there will be interference on the next channel used to re-transmit the data Low Interference - Conversely, if Bluetooth is interfering with another system that uses a set of channels, Bluetooth will only use those channels a small proportion of the time Security - Since the hop pattern is pseudo random it is very difficult for anyone to eavesdrop on the Bluetooth link
Описание слайда:
Benefits of FHSS Reliability - If a packet is not correctly received on one channel due to interference it is unlikely that there will be interference on the next channel used to re-transmit the data Low Interference - Conversely, if Bluetooth is interfering with another system that uses a set of channels, Bluetooth will only use those channels a small proportion of the time Security - Since the hop pattern is pseudo random it is very difficult for anyone to eavesdrop on the Bluetooth link

Слайд 16


Hop Selection and Synchronization One frequency hop lasts 625µs, this increment is called a time slot Each Bluetooth device has a clock circuit that counts frequency hops The address of the master of the piconet is used to seed a frequency hop calculation algorithm The phase of the hop sequence is defined by the Bluetooth clock of the master Device address and clock phase information is exchanged during connection negotiation The slave synchronizes its own clock to the master’s during connection so that both devices change frequency at the same time
Описание слайда:
Hop Selection and Synchronization One frequency hop lasts 625µs, this increment is called a time slot Each Bluetooth device has a clock circuit that counts frequency hops The address of the master of the piconet is used to seed a frequency hop calculation algorithm The phase of the hop sequence is defined by the Bluetooth clock of the master Device address and clock phase information is exchanged during connection negotiation The slave synchronizes its own clock to the master’s during connection so that both devices change frequency at the same time

Слайд 17


Adaptive Frequency Hopping Introduced in Bluetooth v1.2 Bluetooth shares the 2.4GHz ISM band with: 802.11b/g Wi-Fi Systems 2.4GHz cordless phones Microwave ovens More devices = More interference. 802.11b/g does not work well with BT interferers. AFH allows BT to avoid known ‘bad’ channels. Increased bandwidth, reduced lost data.
Описание слайда:
Adaptive Frequency Hopping Introduced in Bluetooth v1.2 Bluetooth shares the 2.4GHz ISM band with: 802.11b/g Wi-Fi Systems 2.4GHz cordless phones Microwave ovens More devices = More interference. 802.11b/g does not work well with BT interferers. AFH allows BT to avoid known ‘bad’ channels. Increased bandwidth, reduced lost data.

Слайд 18


Adaptive Frequency Hopping Three steps
Описание слайда:
Adaptive Frequency Hopping Three steps

Слайд 19


Adaptive Frequency Hopping Three steps Identify Bad Channels by monitoring RSSI, BER and/or PER
Описание слайда:
Adaptive Frequency Hopping Three steps Identify Bad Channels by monitoring RSSI, BER and/or PER

Слайд 20


Adaptive Frequency Hopping Three steps Identify Bad Channels by monitoring RSSI, BER and/or PER Receive reserved channel usage from host
Описание слайда:
Adaptive Frequency Hopping Three steps Identify Bad Channels by monitoring RSSI, BER and/or PER Receive reserved channel usage from host

Слайд 21


Adaptive Frequency Hopping Three steps Identify Bad Channels by monitoring RSSI, BER and/or PER Receive reserved channel usage from host Agree with other devices on Bad Channels
Описание слайда:
Adaptive Frequency Hopping Three steps Identify Bad Channels by monitoring RSSI, BER and/or PER Receive reserved channel usage from host Agree with other devices on Bad Channels

Слайд 22


Adaptive Frequency Hopping Three steps Identify Bad Channels, monitor RSSI, BER & PER Receive reserved channel usage from host Agree with other devices on Bad Channels
Описание слайда:
Adaptive Frequency Hopping Three steps Identify Bad Channels, monitor RSSI, BER & PER Receive reserved channel usage from host Agree with other devices on Bad Channels

Слайд 23


Adaptive Frequency Hopping Three steps Identify Bad Channels, monitor RSSI, BER & PER Receive reserved channel usage from host Agree with other devices on Bad Channels Use alternative channels
Описание слайда:
Adaptive Frequency Hopping Three steps Identify Bad Channels, monitor RSSI, BER & PER Receive reserved channel usage from host Agree with other devices on Bad Channels Use alternative channels

Слайд 24


Adaptive Frequency Hopping Benefits: Fewer lost packets = better audio quality Less degradation to Bluetooth and 802.11b/g networks Greater bandwidth efficiency Not backward compatible with v1.1 systems
Описание слайда:
Adaptive Frequency Hopping Benefits: Fewer lost packets = better audio quality Less degradation to Bluetooth and 802.11b/g networks Greater bandwidth efficiency Not backward compatible with v1.1 systems

Слайд 25


Modulation Scheme During each hop, data is transmitted using Gaussian Frequency Shift Keying, G-FSK. FSK uses two different frequencies to transmit a binary ‘1’ or ‘0’ For Bluetooth the two frequencies are: fc +  for ‘1’ fc -  for ‘0’ where fc = frequency of current hop and  = ~157kHz
Описание слайда:
Modulation Scheme During each hop, data is transmitted using Gaussian Frequency Shift Keying, G-FSK. FSK uses two different frequencies to transmit a binary ‘1’ or ‘0’ For Bluetooth the two frequencies are: fc +  for ‘1’ fc -  for ‘0’ where fc = frequency of current hop and  = ~157kHz

Слайд 26


Modulation Example For channel 0 (Frequency 2.402GHz)
Описание слайда:
Modulation Example For channel 0 (Frequency 2.402GHz)

Слайд 27


EDR Modulation Schemes π/4-DQPSK – 2Mbps 1MSps => 2Mbps
Описание слайда:
EDR Modulation Schemes π/4-DQPSK – 2Mbps 1MSps => 2Mbps

Слайд 28


EDR Packets v1.2 Packets: v2.0 EDR Packets:
Описание слайда:
EDR Packets v1.2 Packets: v2.0 EDR Packets:

Слайд 29


Transmission timing A slave can only send data to the master after it has received a valid packet from the master Masters transmit in even numbered slots and slaves respond in the next odd numbered slot Single slot packets are less then 366µs long to allow the synthesizer to retune to the next frequency hop
Описание слайда:
Transmission timing A slave can only send data to the master after it has received a valid packet from the master Masters transmit in even numbered slots and slaves respond in the next odd numbered slot Single slot packets are less then 366µs long to allow the synthesizer to retune to the next frequency hop

Слайд 30


Multi-slot packets To increase the throughput of the Bluetooth link longer packets are available. These result in less time spent re-tuning the synthesizer and therefore more time spent transferring data 1, 3 and 5 slot packets are available for use in a dynamic fashion
Описание слайда:
Multi-slot packets To increase the throughput of the Bluetooth link longer packets are available. These result in less time spent re-tuning the synthesizer and therefore more time spent transferring data 1, 3 and 5 slot packets are available for use in a dynamic fashion

Слайд 31


Packet Types There are 14 basic rate packet types defined, split into 4 segments: Common Packets (both ACL & SCO) Single slot packets ACL 3 slot packets ACL 5 slot packets Each packet type has a different level of error correction and protection and different size payloads
Описание слайда:
Packet Types There are 14 basic rate packet types defined, split into 4 segments: Common Packets (both ACL & SCO) Single slot packets ACL 3 slot packets ACL 5 slot packets Each packet type has a different level of error correction and protection and different size payloads

Слайд 32


Forward Error Correction Bluetooth defines three levels of forward error correction No Error Correction: There is no error correction! Data is just put in the payload and sent 1/3 FEC: Each bit is repeated 3 times Majority voting decides bit value 2/3 FEC: The data is encoded using a (15,10) shortened hamming code Every 10 bits of data are encoded into 15 bits of data Can correct single bit errors and detect double bit errors
Описание слайда:
Forward Error Correction Bluetooth defines three levels of forward error correction No Error Correction: There is no error correction! Data is just put in the payload and sent 1/3 FEC: Each bit is repeated 3 times Majority voting decides bit value 2/3 FEC: The data is encoded using a (15,10) shortened hamming code Every 10 bits of data are encoded into 15 bits of data Can correct single bit errors and detect double bit errors

Слайд 33


Common Packet Types
Описание слайда:
Common Packet Types

Слайд 34


SCO Packets
Описание слайда:
SCO Packets

Слайд 35


ACL Packets
Описание слайда:
ACL Packets

Слайд 36


Mixing ACL and HV3 SCO packets
Описание слайда:
Mixing ACL and HV3 SCO packets

Слайд 37


Mixing ACL and HV2 SCO packets
Описание слайда:
Mixing ACL and HV2 SCO packets

Слайд 38


Mixing ACL and HV1 SCO Packets
Описание слайда:
Mixing ACL and HV1 SCO Packets

Слайд 39


Enhanced SCO (eSCO) Bluetooth v1.1 SCO connections have serious impact on air interface usage. Limited to 64kbps audio with CVSD encoding CVSD highly susceptible to packet loss No packet re-transmission Bluetooth v1.2 added multi-slot SCO packet types allows variable data rates Larger duty cycle allows additional connections, scans, etc Also added CRC, FEC and data re-transmission
Описание слайда:
Enhanced SCO (eSCO) Bluetooth v1.1 SCO connections have serious impact on air interface usage. Limited to 64kbps audio with CVSD encoding CVSD highly susceptible to packet loss No packet re-transmission Bluetooth v1.2 added multi-slot SCO packet types allows variable data rates Larger duty cycle allows additional connections, scans, etc Also added CRC, FEC and data re-transmission

Слайд 40


Bluetooth 1.2 eSCO Packets
Описание слайда:
Bluetooth 1.2 eSCO Packets

Слайд 41


Enhanced SCO (eSCO)
Описание слайда:
Enhanced SCO (eSCO)

Слайд 42


Bluetooth 2.0 EDR ACL Packets
Описание слайда:
Bluetooth 2.0 EDR ACL Packets

Слайд 43


Bluetooth 2.0 EDR eSCO Packets
Описание слайда:
Bluetooth 2.0 EDR eSCO Packets

Слайд 44


Power Classes Bluetooth defines 3 power classes for devices: Class 1: 0dBm to +20dBm (1mW to 100mW) Class 2: -6dBm to +4dBm (250µW to 2.5mW) Class 3: <0dBm ( <1mW) These power classes translate into approximate distances often used when discussing Bluetooth: Class 1: 100 Meters Class 2: 10 Meters Class 3: <10 Meters
Описание слайда:
Power Classes Bluetooth defines 3 power classes for devices: Class 1: 0dBm to +20dBm (1mW to 100mW) Class 2: -6dBm to +4dBm (250µW to 2.5mW) Class 3: <0dBm ( <1mW) These power classes translate into approximate distances often used when discussing Bluetooth: Class 1: 100 Meters Class 2: 10 Meters Class 3: <10 Meters

Слайд 45


Discovering and Connecting to Other Devices For a Bluetooth device to discover new devices that are in range it must perform an inquiry A device that wants to be found by another device must be in inquiry scan mode Once a device has been found it must be paged to initiate a connection A device that wants to be connected to must be in Page Scan Mode. A device that wants to connect to a particular device must be in Page Mode
Описание слайда:
Discovering and Connecting to Other Devices For a Bluetooth device to discover new devices that are in range it must perform an inquiry A device that wants to be found by another device must be in inquiry scan mode Once a device has been found it must be paged to initiate a connection A device that wants to be connected to must be in Page Scan Mode. A device that wants to connect to a particular device must be in Page Mode

Слайд 46


Discovering a Bluetooth Device
Описание слайда:
Discovering a Bluetooth Device

Слайд 47


Establishing a baseband connection
Описание слайда:
Establishing a baseband connection

Слайд 48


Secure Simple Pairing (SSP) Feature of Bluetooth 2.1 Enables easier connectivity between devices and better use of security features
Описание слайда:
Secure Simple Pairing (SSP) Feature of Bluetooth 2.1 Enables easier connectivity between devices and better use of security features

Слайд 49


Input/Output Capabilities Four I/O capabilities defined Display Only Display Yes/No Keyboard Only No Input No Output The I/O capabilities are used to determine which association model is used
Описание слайда:
Input/Output Capabilities Four I/O capabilities defined Display Only Display Yes/No Keyboard Only No Input No Output The I/O capabilities are used to determine which association model is used

Слайд 50


“Just Works” User chooses to “add a device”
Описание слайда:
“Just Works” User chooses to “add a device”

Слайд 51


“Just Works”
Описание слайда:
“Just Works”

Слайд 52


Numeric Comparison Step 1 – User enables technology on PC and activates connection from phone Step 2 – User selects “ADD” Step 3 – Phone displays ‘laptop’ and asks user if he/she wishes to connect Step 4 – Phone displays 6-digit number and asks user to confirm Same for mobile phone to car kit and mobile to stereo headset
Описание слайда:
Numeric Comparison Step 1 – User enables technology on PC and activates connection from phone Step 2 – User selects “ADD” Step 3 – Phone displays ‘laptop’ and asks user if he/she wishes to connect Step 4 – Phone displays 6-digit number and asks user to confirm Same for mobile phone to car kit and mobile to stereo headset

Слайд 53


Passkey Entry Step 1 – User powers on keyboard and activates connection from phone Step 2 – User selects “ADD” on the phone Step 3 – Phone displays ‘keyboard’ Step 4 – User is asked to enter 6-digit number on the keyboard and press “Enter”
Описание слайда:
Passkey Entry Step 1 – User powers on keyboard and activates connection from phone Step 2 – User selects “ADD” on the phone Step 3 – Phone displays ‘keyboard’ Step 4 – User is asked to enter 6-digit number on the keyboard and press “Enter”

Слайд 54


Extended Inquiry Response Feature of Bluetooth 2.1 Problem: Takes a long time to find devices, work out what they are called, and what you can do with them… Solution: Include information in the inquiry response Name of Device Profiles supported Etc. Side effects Task oriented actions quicker as devices can get filtered quickly Can transmit other information: time, location, etc.
Описание слайда:
Extended Inquiry Response Feature of Bluetooth 2.1 Problem: Takes a long time to find devices, work out what they are called, and what you can do with them… Solution: Include information in the inquiry response Name of Device Profiles supported Etc. Side effects Task oriented actions quicker as devices can get filtered quickly Can transmit other information: time, location, etc.

Слайд 55


Low Power Modes To help reduce power consumption, there are three Bluetooth low power modes Sniff Mode (The most used) Hold Mode Park Mode Slaves can request to be placed in any of these modes Masters can ask a slave to enter one of these modes Masters can also force a slave into one of these modes if it has previously accepted the mode
Описание слайда:
Low Power Modes To help reduce power consumption, there are three Bluetooth low power modes Sniff Mode (The most used) Hold Mode Park Mode Slaves can request to be placed in any of these modes Masters can ask a slave to enter one of these modes Masters can also force a slave into one of these modes if it has previously accepted the mode

Слайд 56


Sniff Subrating Feature of Bluetooth 2.1 Problem: HID devices want low power and low latency Solution: Laptop transmits packets at required latency to mouse to give low latency Mouse ignores laptop most of the time Side effects Better scatternet support Mouse has 2-3 times better battery life Keyboard has 10x better battery life
Описание слайда:
Sniff Subrating Feature of Bluetooth 2.1 Problem: HID devices want low power and low latency Solution: Laptop transmits packets at required latency to mouse to give low latency Mouse ignores laptop most of the time Side effects Better scatternet support Mouse has 2-3 times better battery life Keyboard has 10x better battery life

Слайд 57


Sniff Mode Devices agree upon a time delay during which no communication will occur During the silent periods the slave can sleep or perform other functions After the silent period the slave wakes up and ‘sniffs’ for a number of slots for its AM_ADR. If there is no data it goes back to sleep Any active SCO connections between the devices must still be supported Difference between sniff and hold mode: Hold mode is a one shot deal during which no communication occurs Sniff mode defines a repeating period during which no communication occurs
Описание слайда:
Sniff Mode Devices agree upon a time delay during which no communication will occur During the silent periods the slave can sleep or perform other functions After the silent period the slave wakes up and ‘sniffs’ for a number of slots for its AM_ADR. If there is no data it goes back to sleep Any active SCO connections between the devices must still be supported Difference between sniff and hold mode: Hold mode is a one shot deal during which no communication occurs Sniff mode defines a repeating period during which no communication occurs

Слайд 58


Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards
Описание слайда:
Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards

Слайд 59


Bluetooth Protocol Stack Bluetooth stack is loosely based around the OSI model HCI layer is not a real layer, it is a hardware interface Audio data bypasses the upper layers and is sent straight to the application
Описание слайда:
Bluetooth Protocol Stack Bluetooth stack is loosely based around the OSI model HCI layer is not a real layer, it is a hardware interface Audio data bypasses the upper layers and is sent straight to the application

Слайд 60


The Link Manager (LM)
Описание слайда:
The Link Manager (LM)

Слайд 61


The Link Manager (LM) Manages link set-up Manages security Manages piconet connections Provides test modes for simplified testing Link manager messages have higher priority than user data LMP messages are not specifically acknowledged LM assumes LC provides error free link But, LC cannot supply 100% error free link!
Описание слайда:
The Link Manager (LM) Manages link set-up Manages security Manages piconet connections Provides test modes for simplified testing Link manager messages have higher priority than user data LMP messages are not specifically acknowledged LM assumes LC provides error free link But, LC cannot supply 100% error free link!

Слайд 62


The Link Manager (LM) cont Link Set-up Procedures: Processes results of Inquiry and Page “Non-connection” oriented commands Device Name, Class of Device, etc. Security Procedures: Authentication, Authorization, Encryption Safer+ algorithm up to 128-bit encryption key Remember there are regional encryption laws to abide by! Pairing and Bonding
Описание слайда:
The Link Manager (LM) cont Link Set-up Procedures: Processes results of Inquiry and Page “Non-connection” oriented commands Device Name, Class of Device, etc. Security Procedures: Authentication, Authorization, Encryption Safer+ algorithm up to 128-bit encryption key Remember there are regional encryption laws to abide by! Pairing and Bonding

Слайд 63


The Link Manager (LM) cont. Piconet Connection Management: Packet type adjustment based on channel quality Switch between 1,3 and 5 slot packets Master-Slave role switching Low Power Modes Sniff, Park and Hold Quality of Service contracts Transmit power control
Описание слайда:
The Link Manager (LM) cont. Piconet Connection Management: Packet type adjustment based on channel quality Switch between 1,3 and 5 slot packets Master-Slave role switching Low Power Modes Sniff, Park and Hold Quality of Service contracts Transmit power control

Слайд 64


The Host Controller Interface (HCI)
Описание слайда:
The Host Controller Interface (HCI)

Слайд 65


Host Controller Interface (HCI) The HCI interface defines a physical connection between a host (e.g. PC) and a host controller (e.g. Bluetooth module) The specification defines three interfaces: USB v1.1 RS-232 UART It also defines messages that are passed across the HCI interface
Описание слайда:
Host Controller Interface (HCI) The HCI interface defines a physical connection between a host (e.g. PC) and a host controller (e.g. Bluetooth module) The specification defines three interfaces: USB v1.1 RS-232 UART It also defines messages that are passed across the HCI interface

Слайд 66


HCI - Not really a layer!
Описание слайда:
HCI - Not really a layer!

Слайд 67


HCI cont. Independent of hardware implementation Standard interface to Link Manager and Link Controller HCI Command groups: Link Control (Inquiry, Paging, Encryption, etc.) Link Policy (Hold, Sniff, Park, QoS) Host Controller and Baseband Commands (PINs, event masks, timeouts, etc.) Informational Parameters (Device address, country code, buffers) Status (Link Quality, RSSI, Failed connections) Testing (Test mode commands) Vendor specific commands
Описание слайда:
HCI cont. Independent of hardware implementation Standard interface to Link Manager and Link Controller HCI Command groups: Link Control (Inquiry, Paging, Encryption, etc.) Link Policy (Hold, Sniff, Park, QoS) Host Controller and Baseband Commands (PINs, event masks, timeouts, etc.) Informational Parameters (Device address, country code, buffers) Status (Link Quality, RSSI, Failed connections) Testing (Test mode commands) Vendor specific commands

Слайд 68


Logical Link Control and Adaptation Protocol (L2CAP)
Описание слайда:
Logical Link Control and Adaptation Protocol (L2CAP)

Слайд 69


Logical Link Control and Adaptation Protocol (L2CAP) Logical Link Control Multiplexing: many logical links onto one physical link Adaptation Segmentation & reassembly: adapts large packets to baseband size Protocol A well defined set of signaling rules understood by all devices
Описание слайда:
Logical Link Control and Adaptation Protocol (L2CAP) Logical Link Control Multiplexing: many logical links onto one physical link Adaptation Segmentation & reassembly: adapts large packets to baseband size Protocol A well defined set of signaling rules understood by all devices

Слайд 70


L2CAP Multiplexing L2CAP adds a Destination Channel ID to every packet The DCID is used to identify and direct packets to the appropriate handler
Описание слайда:
L2CAP Multiplexing L2CAP adds a Destination Channel ID to every packet The DCID is used to identify and direct packets to the appropriate handler

Слайд 71


L2CAP Segmentation and Reassembly
Описание слайда:
L2CAP Segmentation and Reassembly

Слайд 72


L2CAP Quality of Service No Traffic This level indicates that no traffic will be sent out. Traffic will be incoming only Best Effort Default level of service for all links All values included in the QoS request should be viewed as hints and may be entirely ignored Guaranteed Remote device will attempt to honor the service level Cannot overcome radio level interference Not likely to be able to be maintained under poor radio conditions. Best level of QoS for adding multiple connections
Описание слайда:
L2CAP Quality of Service No Traffic This level indicates that no traffic will be sent out. Traffic will be incoming only Best Effort Default level of service for all links All values included in the QoS request should be viewed as hints and may be entirely ignored Guaranteed Remote device will attempt to honor the service level Cannot overcome radio level interference Not likely to be able to be maintained under poor radio conditions. Best level of QoS for adding multiple connections

Слайд 73


Service Discovery Protocol (SDP)
Описание слайда:
Service Discovery Protocol (SDP)

Слайд 74


Service Discovery Protocol (SDP) SDP servers maintain a database on services offered Made up of service records. Servers maintain their own database, there is no central registry. SDP allows clients to search for services. based on attributes and service classes. SDP uses connections set up via the usual Inquiry and Paging operations.
Описание слайда:
Service Discovery Protocol (SDP) SDP servers maintain a database on services offered Made up of service records. Servers maintain their own database, there is no central registry. SDP allows clients to search for services. based on attributes and service classes. SDP uses connections set up via the usual Inquiry and Paging operations.

Слайд 75


SDP Example
Описание слайда:
SDP Example

Слайд 76


RFCOMM
Описание слайда:
RFCOMM

Слайд 77


RFCOMM Serial cable replacement Up to 60 emulated serial port connections per RFCOMM session Depending on implementation, multiple RFCOMM sessions are possible Large base of legacy applications using serial communications Uses GSM TS 07.10 standard Credit Based Flow Control Negotiated credit tokens determine data flow RS-232 control signal emulation RS-232 flow control emulation Software (Xon/Xoff) Hardware (CTS/RTS)
Описание слайда:
RFCOMM Serial cable replacement Up to 60 emulated serial port connections per RFCOMM session Depending on implementation, multiple RFCOMM sessions are possible Large base of legacy applications using serial communications Uses GSM TS 07.10 standard Credit Based Flow Control Negotiated credit tokens determine data flow RS-232 control signal emulation RS-232 flow control emulation Software (Xon/Xoff) Hardware (CTS/RTS)

Слайд 78


Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards
Описание слайда:
Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards

Слайд 79


Bluetooth Profiles Basic set of standards for common usage models. Reduces set of requirements for each usage model. Ensures interoperability Radio Level – ensures devices can contact each other. Protocol Level – ensures devices can communicate. User/usage Level: Ensures application can interoperate. Ensures user can interact with the device.
Описание слайда:
Bluetooth Profiles Basic set of standards for common usage models. Reduces set of requirements for each usage model. Ensures interoperability Radio Level – ensures devices can contact each other. Protocol Level – ensures devices can communicate. User/usage Level: Ensures application can interoperate. Ensures user can interact with the device.

Слайд 80


Bluetooth foundation profiles
Описание слайда:
Bluetooth foundation profiles

Слайд 81


Generic Access Profile
Описание слайда:
Generic Access Profile

Слайд 82


Profile building blocks
Описание слайда:
Profile building blocks

Слайд 83


Serial Port Profiles
Описание слайда:
Serial Port Profiles

Слайд 84


Profile Building blocks
Описание слайда:
Profile Building blocks

Слайд 85


OBEX Profiles File Transfer Object Push Synchronisation
Описание слайда:
OBEX Profiles File Transfer Object Push Synchronisation

Слайд 86


Profiles A2DP- Advanced Audio Distribution Profile AVRCP - A/V Remote Control Profile BIP - Basic Imaging Profile BPP - Basic Printing Profile CTP - Cordless Telephony Profile DID - Device ID Profile DUN - Dial-Up Networking Profile FAX - Fax Profile FTP - File Transfer Profile GAVDP - Generic A/V Distribution Profile GOEP - Generic Object Exchange Profile HCRP - Hardcopy Cable Replacement Profile HDP - Health Device Profile
Описание слайда:
Profiles A2DP- Advanced Audio Distribution Profile AVRCP - A/V Remote Control Profile BIP - Basic Imaging Profile BPP - Basic Printing Profile CTP - Cordless Telephony Profile DID - Device ID Profile DUN - Dial-Up Networking Profile FAX - Fax Profile FTP - File Transfer Profile GAVDP - Generic A/V Distribution Profile GOEP - Generic Object Exchange Profile HCRP - Hardcopy Cable Replacement Profile HDP - Health Device Profile

Слайд 87


Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards
Описание слайда:
Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards

Слайд 88


HFP Profile Dependency
Описание слайда:
HFP Profile Dependency

Слайд 89


Configuration and Roles Audio Gateway (AG) gateway for the audio input/output typically a cell phone Hands-Free Unit (HF) AG’s remote audio input/output means of remote control
Описание слайда:
Configuration and Roles Audio Gateway (AG) gateway for the audio input/output typically a cell phone Hands-Free Unit (HF) AG’s remote audio input/output means of remote control

Слайд 90


Feature Requirements Must support CVSD Only one audio connection per service level connection (SLC) Can have an SLC without an audio connection Must have an SLC with an audio connection
Описание слайда:
Feature Requirements Must support CVSD Only one audio connection per service level connection (SLC) Can have an SLC without an audio connection Must have an SLC with an audio connection

Слайд 91


Establishing a Service Level Connection
Описание слайда:
Establishing a Service Level Connection

Слайд 92


Transferring Status Information
Описание слайда:
Transferring Status Information

Слайд 93


Answering a call - in-band ring tone
Описание слайда:
Answering a call - in-band ring tone

Слайд 94


Answer/end call – no in-band ring tone
Описание слайда:
Answer/end call – no in-band ring tone

Слайд 95


Three-way call – hold active/accept waiting
Описание слайда:
Three-way call – hold active/accept waiting

Слайд 96


Call Control Audio connection setup Audio connection release Answer incoming call from AG Change in-band ring tone setting Reject incoming call from HF Reject incoming call from AG Audio connection transfer toward HF Audio connection transfer toward AG Place call with phone number supplied by HF
Описание слайда:
Call Control Audio connection setup Audio connection release Answer incoming call from AG Change in-band ring tone setting Reject incoming call from HF Reject incoming call from AG Audio connection transfer toward HF Audio connection transfer toward AG Place call with phone number supplied by HF

Слайд 97


Common AT Command and Result Codes
Описание слайда:
Common AT Command and Result Codes

Слайд 98


Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards
Описание слайда:
Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards

Слайд 99


A2DP Profile Dependency
Описание слайда:
A2DP Profile Dependency

Слайд 100


Configuration and Roles Source (SRC) Source of digital audio stream that is delivered to the sink of the piconet Media player, phone, PC Sink (SNK) Acts as a sink of the digital audio stream that is delivered by the source Stereo headset, wireless speakers, car audio system
Описание слайда:
Configuration and Roles Source (SRC) Source of digital audio stream that is delivered to the sink of the piconet Media player, phone, PC Sink (SNK) Acts as a sink of the digital audio stream that is delivered by the source Stereo headset, wireless speakers, car audio system

Слайд 101


Audio Codec Interoperability Requirements Must support SBC Optional support for MP3, AAC, ATRAC Support can be extended to non-A2DP codecs
Описание слайда:
Audio Codec Interoperability Requirements Must support SBC Optional support for MP3, AAC, ATRAC Support can be extended to non-A2DP codecs

Слайд 102


Codec Specific Information Elements AVDTP signaling procedure negotiates codec parameters Parameters part of Codec Specific Information Elements Sampling frequencies Channel modes (mono, dual channel, stereo, joint stereo) Bit rates Other information specific to selected codecs
Описание слайда:
Codec Specific Information Elements AVDTP signaling procedure negotiates codec parameters Parameters part of Codec Specific Information Elements Sampling frequencies Channel modes (mono, dual channel, stereo, joint stereo) Bit rates Other information specific to selected codecs

Слайд 103


AVDTP Signaling Procedures
Описание слайда:
AVDTP Signaling Procedures

Слайд 104


Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards
Описание слайда:
Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards

Слайд 105


AVRCP Profile Dependency
Описание слайда:
AVRCP Profile Dependency

Слайд 106


Configuration and Roles Controller (CT) Initiates transaction by sending command to target Headsets, remote controls Target (TG) Receives command and generates a response frame Media player, TV, tuner
Описание слайда:
Configuration and Roles Controller (CT) Initiates transaction by sending command to target Headsets, remote controls Target (TG) Receives command and generates a response frame Media player, TV, tuner

Слайд 107


Feature Requirements
Описание слайда:
Feature Requirements

Слайд 108


Procedure of AV/C Command
Описание слайда:
Procedure of AV/C Command

Слайд 109


AV/C Command Types UNIT INFO 1394 Trade Association AV/C Digital Interface Command Set SUBUNIT INFO 1394 Trade Association AV/C Digital Interface Command Set VENDOR DEPENDENT Allows own set of AV/C commands PASS THROUGH Used to transfer user operation information from CT to Panel subunit of TG
Описание слайда:
AV/C Command Types UNIT INFO 1394 Trade Association AV/C Digital Interface Command Set SUBUNIT INFO 1394 Trade Association AV/C Digital Interface Command Set VENDOR DEPENDENT Allows own set of AV/C commands PASS THROUGH Used to transfer user operation information from CT to Panel subunit of TG

Слайд 110


A/V Categories A/V categories specified to ensure interoperability Four Categories Player/Recorder Monitor/Amplifier Tuner Menu Each category has operations which are: Mandatory for the TG Optional Not supported It is mandatory for CT to support At least one category At least one operation
Описание слайда:
A/V Categories A/V categories specified to ensure interoperability Four Categories Player/Recorder Monitor/Amplifier Tuner Menu Each category has operations which are: Mandatory for the TG Optional Not supported It is mandatory for CT to support At least one category At least one operation

Слайд 111


Supported Operations in TG
Описание слайда:
Supported Operations in TG

Слайд 112


Newer AVRCP Versions AVRCP 1.3 - adds support for metadata Query capabilities Query application settings Attributes for currently selected media track Event notifications Continuation (i.e. segmentation/re-assembly) Group navigation AVRCP 1.4 Media player selection Browsing Searching Advanced volume control
Описание слайда:
Newer AVRCP Versions AVRCP 1.3 - adds support for metadata Query capabilities Query application settings Attributes for currently selected media track Event notifications Continuation (i.e. segmentation/re-assembly) Group navigation AVRCP 1.4 Media player selection Browsing Searching Advanced volume control

Слайд 113


Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards
Описание слайда:
Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards

Слайд 114


PBAP Profile Dependencies
Описание слайда:
PBAP Profile Dependencies

Слайд 115


PBAP Overview Client-server interaction model Tailored for hands-free usage case Read only – cannot alter content More feature-rich than OPP
Описание слайда:
PBAP Overview Client-server interaction model Tailored for hands-free usage case Read only – cannot alter content More feature-rich than OPP

Слайд 116


Configuration and Roles Phone book Server Equipment (PSE) Contains source phonebook objects Phone Phone book client equipment (PCE) Retrieves phone book objects from server Accessory in automobile, car kit, headset
Описание слайда:
Configuration and Roles Phone book Server Equipment (PSE) Contains source phonebook objects Phone Phone book client equipment (PCE) Retrieves phone book objects from server Accessory in automobile, car kit, headset

Слайд 117


Phone Book Objects and Representations Based upon IR Mobile Communications specification Five types of phone book objects Main phone book – entries are vCard 2.1 or 3.0 in XML format Incoming call history Outgoing call history Missed call history Combined call history Object representations File representation Folder representation
Описание слайда:
Phone Book Objects and Representations Based upon IR Mobile Communications specification Five types of phone book objects Main phone book – entries are vCard 2.1 or 3.0 in XML format Incoming call history Outgoing call history Missed call history Combined call history Object representations File representation Folder representation

Слайд 118


PBAP Features and Functions
Описание слайда:
PBAP Features and Functions

Слайд 119


Phone Book Download Sequence Example
Описание слайда:
Phone Book Download Sequence Example

Слайд 120


Phone Book Browsing Sequence Example
Описание слайда:
Phone Book Browsing Sequence Example

Слайд 121


Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards
Описание слайда:
Agenda Bluetooth Overview Bluetooth Air Interface & Baseband Bluetooth Protocol Stack Bluetooth Profiles HFP A2DP AVRCP PBAP New Bluetooth Standards

Слайд 122


Bluetooth 3.0+HS Alternate MAC/PHY (AMP) Enables high speed using other radio technologies (e.g. 802.11) Bluetooth Basic Rate acts as control channel Can use 802.11 as high speed bearer channel when needed Enhanced Power Control Faster and more responsive power control
Описание слайда:
Bluetooth 3.0+HS Alternate MAC/PHY (AMP) Enables high speed using other radio technologies (e.g. 802.11) Bluetooth Basic Rate acts as control channel Can use 802.11 as high speed bearer channel when needed Enhanced Power Control Faster and more responsive power control

Слайд 123


Bluetooth 4.0 (BTle) Used to transfer simple data sets between compact devices Opens up whole new classes of Bluetooth applications watches, sneakers, TV remote controls, medical sensors, etc. Takes less time to make a connection than conventional Bluetooth. Consumes approximately 98% less power than Bluetooth Basic Rate
Описание слайда:
Bluetooth 4.0 (BTle) Used to transfer simple data sets between compact devices Opens up whole new classes of Bluetooth applications watches, sneakers, TV remote controls, medical sensors, etc. Takes less time to make a connection than conventional Bluetooth. Consumes approximately 98% less power than Bluetooth Basic Rate

Слайд 124


Why is Bluetooth low energy low power? Bluetooth Listens frequently Listens for a longer time On 1% Bluetooth low energy Transmits quickly Listens quickly Turned off 99.9% of the time
Описание слайда:
Why is Bluetooth low energy low power? Bluetooth Listens frequently Listens for a longer time On 1% Bluetooth low energy Transmits quickly Listens quickly Turned off 99.9% of the time

Слайд 125


Why is Bluetooth low energy low power?
Описание слайда:
Why is Bluetooth low energy low power?

Слайд 126


Bluetooth 101. Training for Plantronics, слайд №126
Описание слайда:

Скачать

Похожие презентации
Mypresentation.ru
Загрузить презентацию