Abstract: The present invention provides a method and apparatus for device synchronization and power conservation in a wireless communication system. In one embodiment, a method of a communication device for device synchronization and conserving power includes determining one or more device parameters in a wireless communication system, where the one or more device parameters are indicative of one or more time slots and at least one additional guard slot required during data transaction. The method also includes forming a connection request including the one or more device parameters, and communicating the connection request to a controller in the wireless communication system.

Abstract: A method and a device for managing resources in a wireless communication network are provided. In one embodiment, a Medium Access Control (MAC) superframe format for a wireless communication network includes a beacon frame including beacon information for synchronizing devices in the wireless communication network and for defining structure of the MAC superframe, where the beacon information includes superframe structure information and synchronization information. The MAC superframe format also includes at least one multi-node connection frame substantially following the beacon frame and including device specific information and network specific information for allocating resources to one or more of the devices and/or providing network configuration parameters to the devices.

Abstract: The present invention provides an ultra-wide band (UWB) system and method. In one embodiment, a transmitter of a low duty cycled ultra wide band (UWB) system includes a differential spreading encoder for encoding a phase of a bit sequence based on a reference bit sequence. The transmitter also includes a pulse generator for generating a number of pulses associated the bit sequence using the encoded phase of the bit sequence, where the number of pulses is equal to a length of the bit sequence. Moreover, the transmitter includes a DMPSK modulator for generating a modulated signal through modulating the number of pulses using a phase of a differential data symbol.

Abstract: A data transmission/reception method in Near Field Communications (NFC) for improving data throughput is provided. Communications between a first NFC device and a second NFC device which perform NFC includes (a) transmitting, by the first NFC device, a data frame to the second NFC device, (b) setting, by the second NFC device, an indication of presence or absence of more-data in a bit of a Logical Link Control (LLC) information frame and transmitting the LLC information frame as a response frame responding to the data frame transmitted from the first NFC device, and (c) checking, by the first NFC device, the bit of the response frame and waiting for predetermined time or immediately transmitting a next transmission data bit without waiting for the predetermined time according to the check result.

Abstract: The present invention provides an integrated medium access control for processing respectively separated traffic situation sets. Another aim of the present invention is to optimize power consumption during a poll based operation of the medium access control mechanism. An additional aim of the present invention is to provide a poll-based error recovery mechanism for achieving preferred application reliability through power- and cost-efficient methods. A further aim of the present invention is to provide an in-band wakeup method for a medical implant device in a human body area network. Still a further aim of the present invention is to provide a method for a medical implant device in a human body area network. An even further aim of the present invention is to provide a method for simultaneously accessing a power channel of a poll-based minimum level and operating a plurality of BANs in medical implant communications.

Abstract: A method and system for managing a body area network using a coordinator device. The method includes acquiring a medical implant communication service (MICS) channel by an MICS transceiver in the coordinator device. The method also includes sending a signal, indicative of a wake-up process, in a non-MICS channel to an implant device and a command signal, indicative of joining a piconet, by the MICS transceiver to an implant device. Further, the method also includes receiving an acknowledgement signal by the MICS transceiver of the coordinator device based on the sending of the command signal to the implant device. The acknowledgement signal comprises a security control field. Furthermore, the method includes initiating security procedures based on the security control field. Further, the method also includes exchanging data between the coordinator device and the implant device based on the initiating and disassociating the implant device by sending a command message.

Abstract: A data transmission/reception method in Near Field Communications (NFC) for enhancing data throughput between at least an initiator device and a target device. The data transmission/reception method typically includes initiating a communication between an initiator and a target that perform NFC, aggregating a plurality of data packet units to be transmitted in order to form an aggregated frame, and transmitting the aggregated frame to a counterpart NFC device.

Abstract: Methods for selectively securing records in a Near Field Communication Data Exchange Format (NDEF) message. A method includes placing a place marker signature record in the NDEF message. The place marker signature record is a modified signature Record Type Definition (RTD). A first set of records preceding the place marker signature record in the NDEF message is unsecured. The method also includes securing a second set of records following the place marker signature record. Another method includes placing a secured bytes field in the signature RTD. The secured byte field indicates a number of bytes of data to be secured preceding this field. The method also includes securing data in records preceding this field in the signature RTD, based on a value of the secured bytes field.

Abstract: A method and a system for using the method are provided. The method and system allow a low power device having an asymmetric link to access a wireless network to exchange beacons with any one of a plurality of normal power devices in the wireless network. The method includes the steps of confirming whether the low power device has the asymmetric link with the normal power device, when the low power device receives a beacon of the low power device based on the received beacon; negotiating with at least one relay device so that the low power device requests a relay with respect to the asymmetric link, when the low power device has an asymmetric link with the normal power device; and at least one relay device noting a result of the negotiation to the low power device and a normal power device with which the low power device is intending to communicate, based on the result of the negotiation.

Abstract: A power saving system in distributed wireless personal area network and a method thereof are disclosed. A PS (Power Save) anchor that provides information about hibernating devices to a beacon group through power save information elements in media access control for a wireless personal area network based on a wireless mobile ad-hoc network. Accordingly, all devices in the given wireless personal area network can schedule their active modes and hibernating modes according to hibernating intervals of destination devices with which the devices want to communicate. This can effectively reduce the necessity of the devices' waiting for the destination devices to awake from the hibernating mode as the devices maintain their idle state, and thus the power consumption of all the devices in the network can effectively be reduced.

Abstract: A method and system for managing data between a plurality of electronic devices in a Near Field Communication (NFC) network are provided. The method is performed at a first electronic device. A request is received from a second electronic device to send context data. The context data is then represented in accordance with a context Record Type Definition (RTD). The context RTD is used for defining context data in the NFC network. The context data that is represented in accordance with the context RTD is exchanged with the second electronic device.

Abstract: The present invention proposes a method for protecting and monitoring removable entities in an embedded system. In accordance with the present invention, prior to insertion of a removable entity in the embedded system, a user registers details of the removable entity in the device host. The details may be entered after entering a password or a PIN. A registration identification is calculated based on an algorithm in the device host and is then stored in the host. After the removable entity is inserted, it is registered in an unalterable area (e.g. flash memory) of the device host. Information such as the category of the removable entity, a device number, etc. may be exchanged between the device host and the removable entity. The device host then computes a registration identification based on a Removable Entity Registration Algorithm. The identifications are then compared, and the device host displays the details of the removable entity to the user.

Abstract: A system for dynamically shifting beacons in a distributed wireless network and a method thereof are disclosed. In a medium access control for a wireless personal area network based on a mobile ad-hoc network, beacons are shifted to other free lower slots in order to reduce the size of a beacon period. Also, collisions that may occur during the shifting of the beacons are detected and avoided. According to the system and method, the size of the beacon period for transmitting data can sufficiently be secured by dynamically reducing the size of the beacon period without collisions.

Abstract: Disclosed is a method for secure communication between a plurality of electronic devices in a Near Field Communication (NFC) network, and a system for supporting the method. To this end, a first electronic device shares a plurality of keys with the at least one device among the plurality of electronic devices and selects a first key among the plurality of keys and exchanges data encrypted based on the first key with the at least one device among the plurality of electronic devices and replaces the first key with at least one key among the plurality of keys while exchanging the data after at least one predetermined criterion has been satisfied.

Abstract: A data transmission/reception method in Near Field Communications (NFC) for enhancing data throughput between at least an initiator device and a target device. The data transmission/reception method typically includes initiating a communication between an initiator and a target that perform NFC, aggregating a plurality of data packet units to be transmitted in order to form an aggregated frame, and transmitting the aggregated frame to a counterpart NFC device.

Abstract: A data transmission/reception method in Near Field Communications (NFC) for improving data throughput is provided. Communications between a first NFC device and a second NFC device which perform NFC includes (a) transmitting, by the first NFC device, a data frame to the second NFC device, (b) setting, by the second NFC device, an indication of presence or absence of more-data in a bit of a Logical Link Control (LLC) information frame and transmitting the LLC information frame as a response frame responding to the data frame transmitted from the first NFC device, and (c) checking, by the first NFC device, the bit of the response frame and waiting for predetermined time or immediately transmitting a next transmission data bit without waiting for the predetermined time according to the check result.

Abstract: A method and a system for using the method are provided. The method and system allow a low power device having an asymmetric link to access a wireless network to exchange beacons with any one of a plurality of normal power devices in the wireless network. The method includes the steps of confirming whether the low power device has the asymmetric link with the normal power device, when the low power device receives a beacon of the low power device based on the received beacon; negotiating with at least one relay device so that the low power device requests a relay with respect to the asymmetric link, when the low power device has an asymmetric link with the normal power device; and at least one relay device noting a result of the negotiation to the low power device and a normal power device with which the low power device is intending to communicate, based on the result of the negotiation.

Abstract: Disclosed are a method for media access controlling and channel time reservation system and method in distributed wireless personal area networks. A method of media access controlling for a distributed wireless network including at least one device, includes a device of the distributed wireless network, generating a data slot reservation indicator for devices of the same beacon group, and the device, broadcasting the generated data slot reservation indicator. Thus, a slot reservation for communication between devices can be completed in a shorter period of time. Also, capacity of the network can be improved by spatial reuse of channel time.

Abstract: A system for dynamically shifting beacons in a distributed wireless network and a method thereof are disclosed. In a medium access control for a wireless personal area network based on a mobile ad-hoc network, beacons are shifted to other free lower slots in order to reduce the size of a beacon period. Also, collisions that may occur during the shifting of the beacons are detected and avoided. According to the system and method, the size of the beacon period for transmitting data can sufficiently be secured by dynamically reducing the size of the beacon period without collisions.

Abstract: A power saving system in distributed wireless personal area network and a method thereof are disclosed. A PS (Power Save) anchor that provides information about hibernating devices to a beacon group through power save information elements in media access control for a wireless personal area network based on a wireless mobile ad-hoc network. Accordingly, all devices in the given wireless personal area network can schedule their active modes and hibernating modes according to hibernating intervals of destination devices with which the devices want to communicate. This can effectively reduce the necessity of the devices' waiting for the destination devices to awake from the hibernating mode as the devices maintain their idle state, and thus the power consumption of all the devices in the network can effectively be reduced.