摘要:
A random copolymer having a structure represented by the following Formula 1: wherein R is phosphonic acid, Me is a methyl group, x is a number of styrene units, and y is a number of methyl methacrylate units.
摘要:
The present invention relates to a scheduling apparatus and a method thereof in an HPi system. A scheduling algorithm is applied appropriate to a characteristic of each multimedia service (e.g., real-time service, non real-time service, best-effort service, etc.) and a transmission order of the IP packets transmitted from a network is determined such that a transmit wait queue is generated. Radio resource allocation is performed in accordance with the order of the data items queued in the transmit wait queue, the size of transmittable data is determined such that a PDU is generated. In addition, frame data formed of bursts of PDUs is generated and transmitted to a physical layer. Therefore, a scheduling algorithm can be applied appropriate to characteristics of each multimedia service. In addition, packet scheduling is performed in two steps in order to schedule traffic corresponding to radio frames such that packets can be efficiently processed.
摘要:
A rotary-type hinge device for a portable terminal for rotating the folder of the terminal from the body thereof about a first hinge axis and about a second hinge axis, which is perpendicular to the first hinge axis is provided. The rotary-type hinge device comprises a first hinge module coupled to the body and adapted to rotate the folder about the first hinge axis; a second hinge module coupled to the folder and adapted to rotate the folder about the second hinge axis, when the folder is rotated a predetermined angle or more about the first hinge axis; a guide provided on the first hinge module and positioned adjacently to the second hinge module; and a stopper provided on the second hinge module and adapted to limit the rotation of the folder about the second hinge axis, when the folder is rotated within a predetermined angle about the first hinge axis.
摘要:
The present invention relates to a packet access router and a ranging method using the same in a mobile communication system. In the mobile communication system to which the packet access router is introduced, a better initial access process and a periodic ranging process are performed so as to accurately transmit data to the access point irrespective of the condition of whether an access terminal is provided in the packet access router region or not. When a ranging code is received, it is accurately determined whether the ranging code is directly received from the access terminal or it is received through the packet access router, and a method for performing a ranging control on the access terminal and a packet access router when the ranging code is transmitted to the access point through the packet access router. Therefore, the coverage of the access point is increased and the data throughput is improved. Also, system performance can be enhanced through efficient power control on the access terminal provided out of the access point region.
摘要:
A method of an uplink scheduler for a base station in a wireless communication system is provided. The wireless communication system performs uplink wireless access for a best effort service, based on random access. The uplink scheduler of the base station transmits downlink traffic data to a user terminal, and estimates uplink traffic data generated from the user terminal based on the downlink traffic data. In addition, the uplink scheduler allocates resources for the estimated uplink traffic data to the user terminal, and receives the uplink traffic data transmitted from the user terminal by using the resources allocated to the user terminal.
摘要:
In a base station of an IEEE 802.16 Wireless MAN-based portable Internet system, a forward packet scheduling method and apparatus is provided. The portable Internet system portable Internet service includes a user terminal AT for providing a portable Internet service, a base station AP for supporting an inter-user terminal wireless access and network connection, and a packet access router PAR for performing a mobility control and packet routing function of each user terminal AT. The forward packet scheduler includes a packet-based subsidiary scheduling part for considering a real-time service and a user-based scheduling part for ensuring fairness and increasing system efficiency (throughput). After finishing the 2-step scheduling, the generated frame data are transmitted though a physical layer to a wireless user terminal. Therefore, with such a structure, the forward packet scheduling method may guarantee a maximum of system efficiency and fairness according to each user's QoS requirements, and may also guarantee a delay performance for a real-time service.
摘要:
The present invention relates to a scheduling apparatus and a method thereof in an HPi system. A scheduling algorithm is applied appropriate to a characteristic of each multimedia service (e.g., real-time service, non real-time service, best-effort service, etc.) and a transmission order of the IP packets transmitted from a network is determined such that a transmit wait queue is generated. Radio resource allocation is performed in accordance with the order of the data items queued in the transmit wait queue, the size of transmittable data is determined such that a PDU is generated. In addition, frame data formed of bursts of PDUs is generated and transmitted to a physical layer. Therefore, a scheduling algorithm can be applied appropriate to characteristics of each multimedia service. In addition, packet scheduling is performed in two steps in order to schedule traffic corresponding to radio frames such that packets can be efficiently processed.
摘要:
The present invention relates to a packet access router and a ranging method using the same in a mobile communication system. In the mobile communication system to which the packet access router is introduced, a better initial access process and a periodic ranging process are performed so as to accurately transmit data to the access point irrespective of the condition of whether an access terminal is provided in the packet access router region or not. When a ranging code is received, it is accurately determined whether the ranging code is directly received from the access terminal or it is received through the packet access router, and a method for performing a ranging control on the access terminal and a packet access router when the ranging code is transmitted to the access point through the packet access router. Therefore, the coverage of the access point is increased and the data throughput is improved. Also, system performance can be enhanced through efficient power control on the access terminal provided out of the access point region.
摘要:
In a base station of an IEEE 802.16 Wireless MAN-based portable Internet system, a forward packet scheduling method and apparatus is provided. The portable Internet system portable Internet service includes a user terminal AT for providing a portable Internet service, a base station AP for supporting an inter-user terminal wireless access and network connection, and a packet access router PAR for performing a mobility control and packet routing function of each user terminal AT. The forward packet scheduler includes a packet-based subsidiary scheduling part for considering a real-time service and a user-based scheduling part for ensuring fairness and increasing system efficiency (throughput). After finishing the 2-step scheduling, the generated frame data are transmitted though a physical layer to a wireless user terminal. Therefore, with such a structure, the forward packet scheduling method may guarantee a maximum of system efficiency and fairness according to each user's QoS requirements, and may also guarantee a delay performance for a real-time service.
摘要:
An apparatus for rotating a camera lens module for a mobile terminal, which rotates the camera lens module according to sliding of a lever is provided. The apparatus includes a slidable camera lever which is exposed to the outside of the mobile terminal, and a rotating unit for rotating the camera lens module clockwise and counterclockwise according to the sliding of the camera lever. The opening of a camera lens of the camera lens module is exposed to the front or back side of the mobile terminal, or hidden inside the mobile terminal, depending on the rotation of the camera lens module.