摘要:
A method and apparatus for transmitting/receiving a Random Access Channel (RACH) signal in a communication system. A User Equipment (UE) selects one of Contention Resolution (CR) channels allocated for collision detection, and transmits the selected CR channel and a connection request message to an Evolved Node B (E-NB), and receives a response signal from the E-NB. The UE transmits the RACH signal, if a collision indicator is included in the response signal. The E-NB receives from each of UEs a connection request message and a CR channel, decodes the connection request message, and detects a collision between the UEs using the CR channel. The E-NB generates a response signal to the connection request message according to the decoding result, generates a collision indicator according to the collision detection result, and transmits to the UEs at least one of the generated response signal, the generated collision indicator, and a unique ID of a corresponding UE.
摘要:
A method and apparatus for transmitting/receiving a Random Access Channel (RACH) signal in a communication system. A User Equipment (UE) selects one of Contention Resolution (CR) channels allocated for collision detection, and transmits the selected CR channel and a connection request message to an Evolved Node B (E-NB), and receives a response signal from the E-NB. The UE transmits the RACH signal, if a collision indicator is included in the response signal. The E-NB receives from each of UEs a connection request message and a CR channel, decodes the connection request message, and detects a collision between the UEs using the CR channel. The E-NB generates a response signal to the connection request message according to the decoding result, generates a collision indicator according to the collision detection result, and transmits to the UEs at least one of the generated response signal, the generated collision indicator, and a unique ID of a corresponding UE.
摘要:
A method and apparatus for transmitting/receiving an ACKnowledgement/Negative ACKnowledgement (ACK/NACK) signal to support packet data retransmission in an Frequency Division Multiple Access (FDMA) wireless communication system are provided, in which a User Element (UE) generates an ACK/NACK signal for received packet data, determines whether the UE is set to support ACK/NACK repetition, transmits the ACK/NACK signal on a basic response channel mapped to one of a DCH on which the packet data was received and a Shared Control Channel (SCCH) carrying scheduling information about the packet data, if the UE is not set to support ACK/NACK repetition, and selects one of supplementary response channels for each ACK/NACK repetition, the supplementary response channels being allocated for ACK/NACK repetition and repeatedly transmits the ACK/NACK signal on the selected supplementary response channel according to a predetermined repetition factor, if the UE is set to support ACK/NACK repetition.
摘要:
A method and apparatus for setting transmission power of a data channel by a mobile station in a Frequency Division Multiple Access (FDMA) system. The power setting method and apparatus includes receiving scheduling information from a base station; comparing a data rate of desired transmission data with a data rate of the scheduled data; if the data rate of desired transmission data is less than the data rate of the scheduled data, adjusting a currently set transmission power offset value according to the data rate of desired transmission data and the data rate of the scheduled data; and setting transmission power of the data to be transmitted to the base station using the adjusted transmission power offset value, and transmitting the data using the set transmission power value.
摘要:
A method and apparatus for setting transmission power of a data channel by a mobile station in a Frequency Division Multiple Access (FDMA) system. The power setting method and apparatus includes receiving scheduling information from a base station; comparing a data rate of desired transmission data with a data rate of the scheduled data; if the data rate of desired transmission data is less than the data rate of the scheduled data, adjusting a currently set transmission power offset value according to the data rate of desired transmission data and the data rate of the scheduled data; and setting transmission power of the data to be transmitted to the base station using the adjusted transmission power offset value, and transmitting the data using the set transmission power value.
摘要:
A method and apparatus for transmitting/receiving an ACKnowledgement/Negative ACKnowledgement (ACK/NACK) signal to support packet data retransmission in an Frequency Division Multiple Access (FDMA) wireless communication system are provided, in which a User Element (UE) generates an ACK/NACK signal for received packet data, determines whether the UE is set to support ACK/NACK repetition, transmits the ACK/NACK signal on a basic response channel mapped to one of a DCH on which the packet data was received and a Shared Control Channel (SCCH) carrying scheduling information about the packet data, if the UE is not set to support ACK/NACK repetition, and selects one of supplementary response channels for each ACK/NACK repetition, the supplementary response channels being allocated for ACK/NACK repetition and repeatedly transmits the ACK/NACK signal on the selected supplementary response channel according to a predetermined repetition factor, if the UE is set to support ACK/NACK repetition.
摘要:
A wireless charging method and apparatus wirelessly charges power between separate electronic appliances. The wireless charging method includes searching for at least one chargeable electronic device, receiving status information from the searched at least one electronic device, determining whether the electronic device is a power supply electronic device or a power demand electronic device, receiving a supply of power from the searched at least one electronic device if the electronic device is determined to be the power demand electronic device, and supplying the power to the at least one electronic device if the electronic device is determined to be the power supply electronic device.
摘要:
Disclosed is a method of controlling a communication system including one or more sensors attached to a user, a wireless communication apparatus, and a coordinator. The method of controlling the communication system includes receiving a request for a proxy authority for a proxy between the one or more sensors and the coordinator from the wireless communication apparatus and assigning the proxy authority to the wireless communication apparatus by the coordinator; generating a user identifier corresponding to the user by the wireless communication apparatus; searching for the one or more sensors attached to the user and establishing pairings with the found one or more sensors by the wireless communication apparatus; making a request for association information for an association between the coordinator and the sensors from the found one or more sensors and receiving the association information by the wireless communication apparatus; making a request for an association proxy for an association between the found one or more sensors and the coordinator from the coordinator and receiving the association proxy in response to the request by the wireless communication apparatus; and establishing an association with the found one or more sensors, making a request for data, and receiving the data in response to the request for the data by the coordinator.
摘要:
A method and a system for operating a Mutual Broadcast Period (MBP) and Contention Access Period (CAP) for load control are provided. The proposed system and method is suitable for a short-range communication environment such as communication environment in or around the human body, and is for a mesh network communication environment in which one piconet is formed around the human body or a plurality of devices are connected. When signals carrying biometric information are periodically received from a plurality of sensor devices for medical purposes, the system and method may achieve efficient resource access by performing load control in a distributed manner, contributing to a reduction in access delay and power consumption and enabling appropriate QoS control.
摘要:
Disclosed is a method of controlling a communication system including one or more sensors attached to a user, a wireless communication apparatus, and a coordinator. The method of controlling the communication system includes receiving a request for a proxy authority for a proxy between the one or more sensors and the coordinator from the wireless communication apparatus and assigning the proxy authority to the wireless communication apparatus by the coordinator; generating a user identifier corresponding to the user by the wireless communication apparatus; searching for the one or more sensors attached to the user and establishing pairings with the found one or more sensors by the wireless communication apparatus; making a request for association information for an association between the coordinator and the sensors from the found one or more sensors and receiving the association information by the wireless communication apparatus; making a request for an association proxy for an association between the found one or more sensors and the coordinator from the coordinator and receiving the association proxy in response to the request by the wireless communication apparatus; and establishing an association with the found one or more sensors, making a request for data, and receiving the data in response to the request for the data by the coordinator.