12 results about "Piconet" patented technology

Disclosed are techniques to setup and use a BLE based wireless network between central devices of multiple piconets to exchange information to coordinate air-time usage by the piconets of the central devices. The information exchanged may include channel maps that indicate frequency channels that are available for use by the respective piconets, slot availability masks that indicate future air-time slots for use by the respective piconets based on a common time reference, and other meta information used to coordinate regulation of air-time usage. The multiple central devices may collaboratively regulate their respective air-time usage based on the exchanged information to reduce the potential for air-time clash. In one aspect, the central devices may use the periodic advertising with response (PAwR) protocol in BLE to exchange future air-time usage information. The timing of periodic advertising packets may provide a time reference for the multiple central devices to coordinate their air-time usage.

The present invention relates to a method and apparatus for reducing power consumption in a receiver of a time slotted communication system. An RF front end has power applied after the start of a preamble or after the start of a header, or upon the start of a packet payload based on connection status, signal level, and interference level. Where the signal level is constant, the communication system is in a connected state, and the interference level is low, the system bypasses packet header destination address matching, or optionally, uses only the least significant bits of the header destination address for matching purposes.

The invention discloses a wireless air time management system based on Bluetooth low energy consumption. Techniques are disclosed that set up and use a BLE-based wireless network between central devices of a plurality of piconets to exchange information to coordinate over-the-air time usage of the piconets of the central devices. The information exchanged may include channel mappings indicating frequency channels available for use by the respective piconets, slot availability masks indicating future air time slots for use by the respective piconets based on a common time reference, and other meta-information for coordinating adjustments for air time usage. The plurality of central devices may cooperatively adjust their respective air time usage based on the exchanged information to reduce the likelihood of air time conflicts. In one aspect, a central device may exchange future air time usage information with BLE using a responsive periodic advertisement (PAwR) protocol. The timing of periodic advertising data packets may provide a time reference for multiple central devices to coordinate their over-the-air time usage.

Disclosed are techniques to temporarily deactivate or activate the ACL link associated with an isochronous link between a central and a peripheral device of a BLE piconet. The central and peripheral devices may agree to enter into an ACL parked mode after an isochronous link is established between the devices. In the parked mode, the ACL link is in a dormant state without any ACL events. If the central or the peripheral device wants to activate the ACL link to transmit one or more control or data packets, the device may use a CIS subevent on the isochronous link to transmit an LL control PDU. The LL control PDU may contain ACL timing information that specifies the timing of the future ACL event. The device may specify the ACL timing information to avoid or reduce chances of collisions of the future ACL event with CIS packets on the isochronous link.

There is provided an apparatus providing a control plane entity (Cu-CP instance, enodeB-CP instance) of a radio access network, the apparatus comprising means for the control plane entity to perform:

The application belongs to the field of Bluetooth communication, and particularly relates to a soft and hard combined Bluetooth function test method and system. The system comprises a test control module, a Bluetooth device under test, and one or more auxiliary Bluetooth devices. The test control module comprises a test script unit and a verification unit. The test script unit simulates an application program of the Bluetooth device under test, and interacts with a host of the Bluetooth device under test through a virtual serial port or a socket interface. The verification unit extracts information of the Bluetooth device under test and / or the auxiliary Bluetooth devices to verify the correctness of a flow, and is unidirectionally connected to the host of the Bluetooth device under test and / or the host of the auxiliary Bluetooth devices through the virtual serial port or the socket interface. The application takes multiple Bluetooth devices paired to form a piconet as test objects, and uses the auxiliary Bluetooth devices to help the Bluetooth device under test complete the function test, thereby improving the accuracy of test effect.

The present invention provides a method, device, medium, chip and system for controlling Bluetooth audio playback, the method comprising: step S100: a Bluetooth slave device establishes a connection with a first master device to form a basic piconet Piconet1, and the Bluetooth slave device establishes a connection with a second master device to form a basic piconet Piconet2; step S200: the Bluetooth slave device establishes a first playback sequence based on the piconet clock CLK1 of the basic piconet Piconet1, and establishes a second playback sequence based on the piconet clock CLK2 of the basic piconet Piconet2; step S300: converting the first playback sequence and the second playback sequence into a first playback sequence to be mixed and a second playback sequence to be mixed based on the Bluetooth slave device clock CLKS; step S400: based on the Bluetooth slave device clock CLKS, mixing and playing the first playback sequence to be mixed and the second playback sequence to be mixed. The method, device, medium, chip and system provided by the present invention can effectively realize two-way or multi-way audio playback.

The embodiment of the application discloses a kind of synchronous method, apparatus and related equipment of bluetooth wireless device, the method includes after the first piconet is accessed by bluetooth wireless device as slave device, the fixed clock of the first piconet is obtained;First preset time T1 and second preset time T2 are obtained, and first clock offset value is calculated according to the first preset time T1 and second preset time T2;Then the clock offset value of the local clock of the bluetooth wireless device and the fixed clock is adjusted to the first clock offset value, and the local clock of the bluetooth wireless device is synchronously adjusted, to realize the synchronization of the bluetooth wireless device and the first piconet, whereby, the time loss of piconet switching can be reduced, and the efficiency of data transceiving is improved.

A method and apparatus for precision blocking in Bluetooth target piconets is described. A Bluetooth monitoring station is used to receive packets on all 79 channels simultaneously. The address codes for a set of target piconets may be received. The access codes are decoded and examined for all received packets. If a set of packets is identified from the received packets, each identified packet having an access code within the set of target access codes, a blocking transmission is sent on that same channel of the identified packet. A start time of the blocking transmission is determined based on a start time of the identified packet, and the blocking transmission is initiated at the estimated start time on the channel, so as to cause a denial of service or a service degradation to that piconet.

Techniques are disclosed for temporarily disabling or enabling the ACL link associated with an isochronous link between a central and peripheral device of a BLE piconet. The central and peripheral devices may agree to enter an ACL parking mode after an isochronous link is established between the devices. In parking mode, the ACL link is in a dormant state with no ACL events. When the central or peripheral device wishes to activate the ACL link to transmit one or more control or data packets, the device may use a CIS subevent on the isochronous link to transmit an LL control PDU. The LL control PDU may include ACL timing information specifying the timing of the future ACL event.The device may specify the ACL timing information to avoid or reduce the probability of collisions of the future ACL event with CIS packets on the isochronous link.

A communication system includes a first piconet unit and a second piconet unit. The first piconet unit includes a first master element, a first slave element, and a second slave element. A first connection mechanism is established between the first master element and each of the first slave element and the second slave element. The second piconet unit includes a second master element, a third slave element, and a fourth slave element. A second connection mechanism is established between the second master element and each of the third slave element and the fourth slave element. A wireless connection mechanism is established between the first master element and the second master element. The wireless connection mechanism is different from the first connection mechanism and the second connection mechanism.

Disclosed are techniques for establishing and using a BLE-based wireless network between central devices of multiple piconets to exchange information to coordinate airtime usage by the piconets of the central devices. The exchanged information may include channel maps indicating frequency channels available for use by the respective piconets, slot availability masks indicating future airtime slots for use by the respective piconets based on a common time reference, and other metainformation used to coordinate airtime usage regulation. The multiple central devices may collaboratively regulate their respective airtime usage based on the exchanged information to reduce the potential for airtime collisions.In one aspect, the central devices may use the Periodic Advertising with Response (PAwR) protocol in BLE to exchange information about future airtime usage. The timing of periodic advertising packets may provide a time reference for the multiple central devices to coordinate their airtime usage.