Abstract: A method and an apparatus for transmitting/receiving a warning message in a wireless communication system are provided. In a method for transmitting a warning message at a base station, a warning message is generated. A paging message including information for the warning message scheduled to be transmitted is broadcasted. A system information block message including the generated warning message is broadcasted.

Abstract: An apparatus and a method for measuring a signal from a femto Base Station (BS) of a User Equipment (UE) registered to the femto BS in a mobile communication system are provided. An operating method of a femto BS for measuring the signal from the femto BS of a UE registered to the femto BS in a mobile communication system where the femto BS and a macro BS coexist, includes, when the UE registered to the femto BS is located in a service coverage area of the macro BS, generating a paging message informing of the existence of the femto BS, and sending the generated paging message to the UE. The UE measures the signal from the femto BS based on the paging message, generates a measurement report message including a measurement result, and sends the generated measurement report message to the macro BS.

Abstract: A method for a connection mode terminal to hand over between a home cell and a public cell in a mobile communication system is provided. In the mobile communication system including the home cell and the public cell, a region of the terminal is determined and a random access channel for the handover is pre-allocated. When the normal handover from the home cell to the public cell fails, the access to the public cell is accomplished using the pre-allocated random access channel. Therefore, the handover failure rate can be lowered.

Abstract: A method and an apparatus for transmitting/receiving a warning message in a wireless communication system are provided. In a method for transmitting a warning message at a base station, a warning message is generated. A paging message including information for the warning message scheduled to be transmitted is broadcasted. A system information block message including the generated warning message is broadcasted.

Abstract: An apparatus and a method for searching for an allowed femtocell in a wireless communication system. A method for providing neighbor base station information from a femto base station to a User Equipment (UE) allowed to access in a wireless communication system includes, when the allowed UE initially accesses or when the neighbor base station information of the femto base station is changed, generating a message comprising the neighbor base station information of the femto base station. The method also includes sending the generated message to the allowed UE.

Abstract: An apparatus and a method for receiving system information in a mobile communication terminal are provided. In the method, system information including scheduling information for at least one additional system information is received from a base station. Whether validity of the system information is determinable is determined. If it is determined that the validity of the system information is not determinable, system information including scheduling information for at least one additional system information is received again from the base station.

Abstract: An apparatus and method for generating and parsing a MAC PDU in a mobile communication system are provided in which LCIDs of MAC SDUs to be multiplexed are checked, the length of an LF is determined for each of the MAC SDUs, referring to LF lengths predetermined for the LCIDs, a MAC header including the LCIDs and LFs of the determined lengths for the MAC SDUs is generated, and a MAC PDU is generated by attaching the MAC header to payload including the MAC SDUs. During the MAC header generation, if a padding size required for the MAC PDU generation calculated taking into account the absence of a last LF in the MAC header is larger than the length of the last LF, the last LF is included in the MAC header, the required padding size is recalculated, taking into account the inclusion of the last LF, and a padding is added according to the re-calculated padding size.

Abstract: An apparatus and a method for searching for an allowed femtocell in a wireless communication system. A method for providing neighbor base station information from a femto base station to a User Equipment (UE) allowed to access in a wireless communication system includes, when the allowed UE initially accesses or when the neighbor base station information of the femto base station is changed, generating a message comprising the neighbor base station information of the femto base station. The method also includes sending the generated message to the allowed UE.

Abstract: An apparatus and a method for measuring a signal from a femto Base Station (BS) of a User Equipment (UE) registered to the femto BS in a mobile communication system are provided. An operating method of a femto BS for measuring the signal from the femto BS of a UE registered to the femto BS in a mobile communication system where the femto BS and a macro BS coexist, includes, when the UE registered to the femto BS is located in a service coverage area of the macro BS, generating a paging message informing of the existence of the femto BS, and sending the generated paging message to the UE. The UE measures the signal from the femto BS based on the paging message, generates a measurement report message including a measurement result, and sends the generated measurement report message to the macro BS.

Abstract: A method for a connection mode terminal to hand over between a home cell and a public cell in a mobile communication system is provided. In the mobile communication system including the home cell and the public cell, a region of the terminal is determined and a random access channel for the handover is pre-allocated. When the normal handover from the home cell to the public cell fails, the access to the public cell is accomplished using the pre-allocated random access channel. Therefore, the handover failure rate can be lowered.

Abstract: Disclosed is a handoff processing method capable of restarting fast communications. The handoff processing method stores in a handoff buffer Host Control Interface (HCI) data and transmission data upon communications in a state where an Access Point is interlinked with an external device. Further, the method forwards the HCI data and the transmission data buffered in the handoff buffer to a new Access Point (AP) transmitting a message indicating setup completion of a connection if the message indicating setup completion of a connection with the external device is transmitted from the new AP after a handoff occurs as the external device moves. Accordingly, throughputs are not lowered despite handoff occurrences in poor wireless channel environments, so that service quality can be enhanced.

Abstract: An apparatus and method for generating and parsing a MAC PDU in a mobile communication system are provided in which LCIDs of MAC SDUs to be multiplexed are checked, the length of an LF is determined for each of the MAC SDUs, referring to LF lengths predetermined for the LCIDs, a MAC header including the LCIDs and LFs of the determined lengths for the MAC SDUs is generated, and a MAC PDU is generated by attaching the MAC header to payload including the MAC SDUs. During the MAC header generation, if a padding size required for the MAC PDU generation calculated taking into account the absence of a last LF in the MAC header is larger than the length of the last LF, the last LF is included in the MAC header, the required padding size is recalculated, taking into account the inclusion of the last LF, and a padding is added according to the re-calculated padding size.

Abstract: An apparatus and method for generating and parsing a MAC PDU in a mobile communication system are provided in which LCIDs of MAC SDUs to be multiplexed are checked, the length of an LF is determined for each of the MAC SDUs, referring to LF lengths predetermined for the LCIDs, a MAC header including the LCIDs and LFs of the determined lengths for the MAC SDUs is generated, and a MAC PDU is generated by attaching the MAC header to payload including the MAC SDUs. During the MAC header generation, if a padding size required for the MAC PDU generation calculated taking into account the absence of a last LF in the MAC header is larger than the length of the last LF, the last LF is included in the MAC header, the required padding size is recalculated, taking into account the inclusion of the last LF, and a padding is added according to the re-calculated padding size.

Abstract: An apparatus and a method for receiving system information in a mobile communication terminal are provided. In the method, system information including scheduling information for at least one additional system information is received from a base station. Whether validity of the system information is determinable is determined. If it is determined that the validity of the system information is not determinable, system information including scheduling information for at least one additional system information is received again from the base station.

Abstract: An apparatus and method for generating and parsing a MAC PDU in a mobile communication system are provided in which LCIDs of MAC SDUs to be multiplexed are checked, the length of an LF is determined for each of the MAC SDUs, referring to LF lengths predetermined for the LCIDs, a MAC header including the LCIDs and LFs of the determined lengths for the MAC SDUs is generated, and a MAC PDU is generated by attaching the MAC header to payload including the MAC SDUs. During the MAC header generation, if a padding size required for the MAC PDU generation calculated taking into account the absence of a last LF in the MAC header is larger than the length of the last LF, the last LF is included in the MAC header, the required padding size is recalculated, taking into account the inclusion of the last LF, and a padding is added according to the re-calculated padding size.

Abstract: A wireless communication method according to the present invention, in a Bluetooth device connected to multiple piconets and operating in a scatter mode, includes steps of (a) establishing credit values by link for the multiple piconets, and the total sum of the credit values by link as a temporary account value; (b) updating the credit values by link and the temporary account value every slot based on a predetermined manner; (c) performing communications through a link selected based on a comparison result of the credit values by link at each Presence Point(PP); and (d) unevenly redistributing predetermined credit values based on characteristics by link and returning to the step (b) in one of the two cases in which the communications are interrupted with a POLL_NULL sequence and the temporary account value becomes the same as the total number, n, of links.

Abstract: An apparatus and method for avoiding waste of resources by dynamically allocating a length of a Logical Channel IDentification (LCID) of a header included in a Media Access Control (MAC) Protocol Data Unit (PDU) are provided. The apparatus includes a header generator for evaluating a MAC Service Data Unit (SDU) to be multiplexed and for dynamically allocating LCID information according to the evaluated MAC SDU, when radio bearer information is modified. Accordingly, the conventional problem can be solved in which a large number of bits are unnecessarily wasted since the length of the LCID is fixedly allocated or in which logical channels cannot be sufficiently used.

Abstract: A low-power transmitting apparatus and transmission method in a wireless personal area network (WPAN). A length of a fragment, a data rate, and a transmission power is selected to transmit a frame with minimum energy consumption in a contention period and a contention-free period. Thus, a quality of service (QoS) requirement for the transmission can be satisfied and the data frame can be transmitted with less energy consumption. Even when the channel status changes, a new transmission criterion suitable for the changed channel status is selected to minimize the consumption of the unnecessary energy. Furthermore, the life span of the network according to the energy consumption under a restricted environment can be lengthened.

Abstract: A wireless communication system has a queue information search unit for searching a queue-status information provided in a packet unit, a communication priority decision unit for deciding communication priority of external devices based on the queue-status information, giving a higher priority to the external device having a greater number of packets in queues, a communication initiation unit for initiating a communication with the external devices according to the communication priority, a counter for counting the number of times that the communication is initiated for each of the external devices, and a comparator for comparing a counter value of a first external device that corresponds to a transmitted data with a counter value of a second external device that has a maximum counter value. Accordingly, when the wireless communication device transmits and receives data with respect to the plural wireless communication devices, both high throughput and high fairness can be guaranteed.

Abstract: A wireless communication system includes a queue status detection unit for detecting the amount of unit data being used for communication between a plurality of external devices, and deciding a class parameter T of one of the external devices; a counter for counting the number of giving-away times of the external device based on the giving-away of communication opportunities to communicate with the plurality of external devices, and deciding a delay parameter D of an external device; a communication priority decision unit for calculating priority values P of an external device by using a class parameter and a delay parameter, and determining an external device having a priority out of the plurality of external devices based on the priority values; and a communication initiation unit for initiating data communications with the determined external device having the priority. Accordingly, a communication method considering both throughput and fairness can be obtained.