50 results about "Bluetooth piconets" patented technology

A hybrid device (100) includes both a IEEE-802.11e type WLAN client station (QAP) (102) and a BLUETOOTH piconet unit (104) interconnected such that the BLUETOOTH transmissions are scheduled to occur according to a transmission opportunity (TXOP) (126) that was granted by a quality of service (QoS) access point (QAP) (116) in a basic service set (BSS) (112). Requests for BLUETOOTH traffic are handled by the associated QSTA (102) which generates an add traffic service (ADDTS) (124) to the QAP.

Aspects of a method and system for advertising a Bluetooth multicast feature are provided. A master device may provide a multicast service to active slave devices during a Bluetooth piconet connection. A Bluetooth multicast packet addressed to a specific slave device may be transmitted over a point-to-point connection. The multicast packet may be decoded and acknowledged by each of the slave devices on the piconet. The master device may re-transmit the multicast packet addressed to the specific slave device over the same point-to-point connection when an acknowledgment or response indicating a reception of the multicast packet from each of active slave devices may not be detected. The point-to-point connection may be associated with a L2CAP channel identified by a determined unique channel identifier (M-CID). The point-to-point connection may be secured by assigning a common authentication key shared among the slaves of the piconet.

A connection establishment apparatus and method between devices located on a WPAN are provided. The apparatus includes a control module that wakes up a ZigBee channel; a Zigbee module that scans at least one device located on the WPAN using the ZigBee channel and acquires Bluetooth connection information from the scanned device using the ZigBee channel; and a Bluetooth module that performs Bluetooth paging with the other devices by using the Bluetooth connection information, and establishes a Bluetooth piconet.

A system, method, and apparatus are disclosed whereby a wireless Personal Area Network such as a Bluetooth piconet may be extended to a remote location beyond the normal range by means of a conferencing connection. The conferencing connection may comprise, for example, one or more ISDN lines or an IP connection between two or more conference endpoints. The broadband connection may include a video channel, an audio channel, a control channel, and a Bluetooth channel.

A Bluetooth private network comprises Bluetooth access points, each functioning as a base station in each of Bluetooth piconets, a gateway for functioning as an interface between a public network and the Bluetooth private network, sending a beacon signal to each of the Bluetooth devices in local Bluetooth networks to locate the Bluetooth device and a router for functioning as an interface between each of said Bluetooth access points. The Bluetooth device has a power measuring device therein that measures output power signals of a plurality of Bluetooth access points. When the Bluetooth device is moving from one piconet to another, the Bluetooth device compares the power signals received from two Bluetooth access points and links to the Bluetooth access point with the power signal that exceeds a predetermined level.

A baseband clock synthesizer having particular use in a BLUETOOTH piconet device, having the capability of generating either 12 MHz or 13 MHz clock signals generated from any reference clock signal, e.g., 12.00, 12.80, 13.00, 15.36, 16.80, 19.20, 19.44, 19.68, 19.80, and 26.00 MHz. A fractional-N frequency divider is implemented with a PLL including a variable divider allowing the use of virtually any reference frequency input to generate a locked 156 MHz clock signal used as a basis for a 12 MHz or 13 MHz baseband clock signal. A residue feedback sigma-delta modulator provides a varying integer sequence to an integer divider in a feedback path of the PLL, effectively allowing division by non-integer numbers in the PLL. Thus, the PLL can be referenced to virtually any reference clock and still provide a fixed output clock signal (e.g., 12 or 13 MHz).

The invention discloses a multimachine Bluetooth group communication method based on an Android system, which manly solves the problem that when the existing G network or C network is in a weak signal area, the communication quality is poor, and the communication expense is high. The method comprises the following steps: Bluetooth is started by main Android equipment and auxiliary Android equipment, a Bluetooth Adapter is created by the main equipment to search surrounding auxiliary equipment, and the main equipment and the auxiliary equipment are matched and connected to create a Bluetooth piconet; a Thread for each auxiliary equipment is created by the main equipment to monitor a communication request, the Thread created by the main equipment is responded by each auxiliary equipment to initiate the communication request, data is transmitted and received by the main equipment and the auxiliary equipment, and the received and transmitted data is updated to message interfaces of the main equipment and the auxiliary equipment timely. The invention has the advantages that the zero communication expense is realized, the communication effect in the weak signal area is good, in addition, the intervention of a third party is free, and the new method is suitable for the data communication of short-distance smart phones.

The invention discloses a wireless terminal, a short-range SNS (social networking services) system and an implementation method based on the Bluetooth technology. The SNS system comprises a plurality of piconets consisting of Bluetooth wireless terminals, each piconet comprises one wireless terminal serving as master equipment and one or a plurality of wireless terminals serving as slave equipment, the wireless terminals use Bluetooth devices thereof for detecting the Bluetooth piconets and communicating with other wireless terminals, a Bluetooth network maintenance module is used for constructing, running and destructing the Bluetooth piconets, and an SNS application module is used for running SNS applications, carrying out SNS service interaction through the Bluetooth devices and the other wireless terminals based on the Bluetooth piconets, completing integration and release of information and realizing sharing and exchange of user data. The short-range SNS system can implement SNS services based on Bluetooth wireless networks, can implement local services and be connected with an internet, and has the advantages of low cost and flexibility in networking.

An audio device includes a Bluetooth receiver, a Bluetooth transmitter, a speaker and a housing. The Bluetooth receiver is capable of wirelessly receiving signals in at least two audio channels. The Bluetooth transmitter is capable of wirelessly retransmitting at least a first one of the two audio channels. The speaker plays the second one of the two audio channels. The housing contains the Bluetooth receiver, the Bluetooth transmitter, and the ear phone. The housing is shaped to fit in or on an ear of a user.

The invention discloses a networking interconnection method and system based on low-power-consumption Bluetooth piconets. According to the method and system, multiple peripheral devices broadcast pieces of service type information, containing whether multiple wireless connections are supported or not, corresponding to the peripheral devices respectively to the periphery at low power consumption in a connectable non-directional mode; a central Bluetooth device generates a corresponding peripheral device service list according to the Bluetooth addresses, the pieces of service type information and the pieces of service address information corresponding to the peripheral Bluetooth devices which are connected so that networking of the central device and the peripheral devices can be achieved; after networking is completed, corresponding piconets are established for the central device and the peripheral devices, and any two devices are wirelessly connected according to the corresponding peripheral device service list. By establishing the piconets, any two of the central device and the peripheral devices can be wirelessly connected, user operation is easy and convenience, and the devices is ultralow in stand-by power consumption at ordinary times; interconnection is convenient, operation is convenience, energy is saved, environmental friendliness is achieved, and great convenience is brought.

A link path search and maintain method for establishing link search table between two bluetooth devices such that the devices can transfer data to / from others device located in a bluetooth scatternet. When initialization of a slave bluetooth device, the new member in a bluetooth piconet receives a link search table that transmitted from a master bluetooth device to establish a local link search table; as the link is broken or the link search table needs be updated, the slave bluetooth device executes a link search establishment transmission procedure or a link search establishment receiving procedure to update the local link search table or establish a new link search table. Then, the slave bluetooth device encapsulates the bluetooth data packet according the information of the local link search table in order to transfer data packet in a scatternet.

The present invention provides a baseband RF clock synthesizer having particular use in a BLUETOOTH piconet device, which has the capability of providing simple and accurate calibration of modulation path gain (KMOD) by introducing a dual-loop phase locked loop (PLL) in the RF clock signal synthesizer. The disclosed technique and apparatus controls the maximum frequency deviation by the difference of two locked frequencies, one frequency in each path of the dual-path PLL. Once the PLL is locked within some frequency error, the present technique and apparatus calibrates for the deviation of amplitude of the modulation due to the modulation path. Accordingly, modulation gain (KMOD) calibration is provided by adding an auxiliary loop to a PLL in an RF frequency synthesizer.

A method and apparatus for connecting a Bluetooth device is provided herein. During operation a priority list is used by a Bluetooth piconet master. The Bluetooth piconet master will receive feedback from all slave devices, and then control connections among devices within the piconet based on the priority list and the feedback. The Bluetooth piconet master controls the piconet such that when a first Bluetooth device is connected to a lower-priority Bluetooth device, connection to a higher-priority Bluetooth device will only take place if the higher-priority Bluetooth device becomes “active” (as determined from the feedback). Therefore, as long as the higher-priority Bluetooth device remains “inactive”, the connection to the lower-priority Bluetooth device will remain.

The embodiment of the invention discloses a method for enlarging a Bluetooth control range and a Bluetooth relay gateway, and is applied to the intelligent household technical field. The embodiment method of the invention includes the following steps of: establishing a Bluetooth piconet between a terminal and the Bluetooth relay gateway; receiving Bluetooth signals sent by the terminal through the Bluetooth piconet; filtering interference signals in the Bluetooth signals through a low noise amplifier, and performing amplification processing on the Bluetooth signals, and obtaining amplified Bluetooth signals; performing format transition processing on the amplified Bluetooth signals, and generating wireless communication signals in accordance with a wireless network communication format; and sending the wireless communication signals to a wireless node module, and the wireless node module sending the wireless communication signals through a wireless network server. Through implementation of the embodiment of the invention, the Bluetooth application range can be enlarged by the communication of the Bluetooth relay gateway and wireless nodes, and the terminal communication quality is improved.

The present invention discloses a method by which a new Bluetooth piconet is established amongst participants of an old Bluetooth piconet whose master has disappeared. After determining that the master has disappeared, one of the slaves is selected to take the function of the master and reestablishes communications at the Baseband layer by contacting each of the other participants. Further, the present invention discloses a method and an associated device for realizing point-to-multipoint communications using a Bluetooth piconet by using an application adaptation layer and a local addressing list. Also, the present invention discloses a method by which point-to-multipoint communications by an application using a Bluetooth piconet is reestablished amongst participants of an old Bluetooth piconet whose master has disappeared. After reestablishing the piconet at the Baseband layer, communications at higher layers of the Bluetooth protocol stack are reestablished from the bottom up, that is, reestablishing communications at the LM layer precedes reestablishing communications at the L2CAP layer.

An apparatus enabling establishment of a Bluetooth mesh network comprises at least two Bluetooth transceiver circuitries and an internal connection between the at least two Bluetooth transceiver circuitries. The Bluetooth transceiver circuitries are simultaneously connected to different Bluetooth piconets, and the apparatus operates as a bridge between the piconets. Concatenation of such apparatuses enables construction of a Bluetooth mesh network where the bridge devices may be simultaneously connected to multiple Bluetooth piconets.

A method, apparatus, and computer program for operating a Bluetooth network is presented. The method comprises providing a Bluetooth system comprising a plurality of Bluetooth devices forming Bluetooth piconets disconnected from each other; and providing a route for a data packet between two remote Bluetooth devices through the Bluetooth system by sequentially changing structures of the Bluetooth piconets, wherein at least some of the plurality of Bluetooth devices sequentially create and terminate connections with different Bluetooth devices as a result of the sequential change of the structures of the Bluetooth piconets.

This invention relates to mobile terminal orientation and its programming service method, firstly roughly orientating, which is to orientate the honeycomb net position or the small zone, secondly exactly orientating, which is the manual assistant one key orientation or the small zone exactly orientation or the slightly orientation; wherein the slightly orientation includes the character distilling, comparatively identifying, exactly orientation and training studying; the slightly net is the blue tooth slightly net, the mobile terminal adds the slightly net to obtain the information such as the orientation; service condition, service and the service parameter, wherein the service condition is composed of the special position, time and service; and this invention satisfies the service requirement of the different orientation precision and the mobile communication requirement of the different occasion.

A videoconferencing station is disclosed which includes apparatus for establishing a wireless Personal Area Network (PAN) in the immediate vicinity of the videoconferencing station. In one preferred embodiment, the PAN is a Bluetooth piconet. A Bluetooth-enabled cellular telephone may then be used to make an audio connection via the telephone network to a remote user not in a conference room equipped with a videoconferencing station. The remote user may thereby participate in at least the audio portion of the videoconference. Video portions of the conference may similarly be transmitted if video-enabled phones are used.

Systems and methods for obtaining corrected time information in a GPS enabled device connected to a mobile handset via a short-range wireless network, such as a Bluetooth Piconet. The mobile handset includes a GPS time and a network clock synchronized with a network clock in a short-range wireless network interface in the GPS enabled device. The GPS enabled device may send requests for time information to the mobile handset. The mobile handset receives the request and latches the network clock time and the GPS time. The captured network clock time and GPS times are sent to the GPS enabled device in response to the request. The GPS enable device substracts the captured network clock time from its own network clock time and adds the difference to the captured GPS time to obtain a corrected GPS time.

A polling method compliant to Bluetooth protocol is utilized for increasing transfer efficiency. In a Bluetooth piconet, a master queries each slave to determine the slaves supporting a predetermined protocol. The master determines a predetermined address as the instruction of the predetermined protocol. When the master sends a polling packet with the predetermined address to the supporting slaves, the supporting slaves can respond in sequence. In this way, even if the supporting slaves increase, the master only has to send one single polling packet for all the supporting slaves responding, increasing the transfer efficiency.

The invention discloses a method for call forwarding service treatment by means of a Bluetooth terminal. The method comprises the following steps: a Bluetooth device is searched within the coverage area of a Bluetooth micronet; the Bluetooth device comprises a Bluetooth terminal or a Bluetooth gateway; authentication pairing connection is carried out between the Bluetooth terminal and the Bluetooth gateway; the call forwarding setting condition of the Bluetooth terminal is checked; if the Bluetooth terminal is set with call forwarding function, the Bluetooth terminal initiates a call forwarding service register request to the Bluetooth gateway; the Bluetooth gateway initiates a call forwarding register request to a communication network; moreover, after receiving the call forwarding register request from the Bluetooth gateway, the communication network executes call forwarding register processing and returns the processing result to the Bluetooth gateway. The invention also discloses a corresponding Bluetooth system.

The invention provides a Bluetooth TD-SCDMA gateway for realizing smooth communication between a Bluetooth device and a TD-SCDMA device. A processor thereof is connected with a Bluetooth module and a TD-SCDMA module via serial ports, so that the data of the Bluetooth module is transmitted to the TD-SCDMA module or the date of the TD-SCDMA module is transmitted to the Bluetooth module; the Bluetooth module communicates with a Bluetooth Piconet; and the TD-SCDMA module wirelessly communicates with a TD-SCDMA network. A Bluetooth TD-SCDMA gateway protocol model is divided into a plurality of the following layers: Base band, LMP and L2CAP, RFCOMM, BNEP and SDP which are corresponding to the Bluetooth device, and a TD-SCDMA PHY layer, a TD-SCDMA MAC layer, a TD-SCDMA RLC layer and a TD-SCDMA PDCP layer which are corresponding to a TD-SCDMA server; a PPP protocol layer which is above the TD-SCDMA module; and a Bluetooth TD-CDMA routing layer which is at the topside.

The invention relates to a data reliability transmission method for wireless medical devices based on error retransmission. The data reliability transmission method is characterized in that a reverse link is introduced between the central processing unit of a Bluetooth piconet formed by medical devices in various families and each slave device; the sending end of the medical device performs error-detection coding on information data, such as cyclic redundancy coding (CRC), and sends the coded data to the central processing unit; the central processing unit feeds back information whether data frames are correctly received at a receiving end to the sending end; and the sending end selects a data frame to be sent in the next frame according to an appointed strategy. By means of the data reliability transmission method disclosed by the invention, the partial data loss problem when multiple devices in the piconet send data to the central processing unit at the same time can be effectively solved; and thus, the communication quality of the medical devices in the Bluetooth piconet can be ensured.

A method for making a PC act as an accessory device in BLUETOOTH piconet is disclosed. The method includes the steps of: a) providing a BLUETOOTH adapter; b) connecting the BLUETOOTH adapter to the personal computer (PC) with a software program running in an application level; c) installing a custom BLUETOOTH adapter bus driver to be accessed and operated solely by the software program; d) implementing all necessary BLUETOOTH software stack above and including a BLUETOOTH Host to Controller Interface (HCI) profile; and e) the PC serving as a slave device.