Abstract:
A method for transmitting and receiving data in a communication system. The method includes grouping, by a Base Station (BS), Mobile Stations (MSs) using a real-time service, into groups, allocating burst blocks to the groups, and allocating data bursts of burst blocks to the MSs; and determining, by each MS, whether its own uplink burst is allocated, and transmitting data to the BS through a sub-burst of a burst block allocated to a group to which each MS belongs.
Abstract:
A method for encoding a rate-compatible block Low Density Parity Check (LDPC) code. The method includes designing specific LDPC codes for a predetermined number of coding rates, and generating a pruning pattern by comparing information node degrees of the predetermined number of LDPC codes; matching check node degrees of the predetermined number of LDPC codes; generating a predetermined number of puncturing patterns according to the check node degree when the matched check node degree is calculated; determining whether a first condition given for the generated puncturing patterns is satisfied; and determining the generated puncturing patterns as rate-compatible puncturing patterns when the puncturing patterns satisfy the first condition.
Abstract:
An apparatus and method for transmitting relay station (RS) type information in a multi-hop relay cellular communication system are provided. In the RS type information providing method, an RS transmits a message including information about RS's type to an MS. The MS acquires the RS type information from the message and performs an initial connection procedure with the RS based on the RS type information.
Abstract:
An apparatus and method for relaying neighbor BS in a multi-hop relay broadband wireless access (BWA) communication system are provided. In the BWA communication system, a BS transmits a neighbor BS advertisement message to a relay station (RS) within a cell area of the BS. The RS configures a relay neighbor BS advertisement message by eliminating unavailable neighbor BS information from the neighbor BS advertisement message, and broadcasts the relay neighbor BS advertisement message in a cell area of the RS.
Abstract:
A scanning apparatus and method in a multi-hop relay Broadband Wireless Access (BWA) communication system are provided. In the scanning method, a Mobile Subscriber Station (MSS) sends a scan request message requesting scanning to a Base Station (BS) via a Relay Station (RS). The BS sends a scan response message containing information for the scanning of the MSS to the MSS via the RS. The BS then sends a scan notify message indicating the scanning of the MSS to the RS.
Abstract:
A system and method for state synchronization between a base station and a mobile station in a mobile communication system. A count value indicative of a state change of the base station is received. The received current count value is compared with a previous count value previously received and stored. If the current count value is different from the previous count value, the mobile station performs a network entry procedure with the base station.
Abstract:
An apparatus and a method for transmitting control information in a small base station of a wireless communication system are provided. In the method, when the small base station operates in a Low Duty operation Mode (LDM) in a superframe, a control signal including LDM operation information is generated. Only a subframe via which a preamble, a control signal including the LDM operation information, and a SuperFrame Header (SFH) are transmitted is transmitted during the superframe. When the small base station operates in a normal operation mode in a superframe, at least one of the control information and data is transmitted via at least one subframe of the superframe.
Abstract:
A method to transmit a packet of a BS in a communication system using a HARQ scheme is provided. The method includes assigning resource for transmitting a packet to a mobile station, and transmitting a first packet to the mobile station using the assigned resource; transmitting timing information on which a second packet is transmitted to the mobile station when the BS does not receive information indicating that the mobile station decoded the first packet successfully or when the BS receives information indicating that the mobile station failed to decode the first packet; and transmitting the second packet to the mobile station on a timing point corresponding to the timing information.
Abstract:
An apparatus and method select a segment for providing identification information of a small base station (BS) in a wireless communication system. A signal quality of each of a plurality of segments is determined. When at least one segment is not used by a macro BS, a segment of the worst signal quality is selected among the at least one segment that is not used by a macro BS. And the identification information is transmitted using the selected segment. The selected segment represents a resource for transmitting the identification information.
Abstract:
A thermochromic smart window and a method of manufacturing the thermochromic smart window including a glass and a thermochromic layer including a vanadium dioxide material formed on the glass. A thermochromic smart window includes a substrate and a thermochromic layer disposed on the substrate, wherein a slope of a graph of a reflectance of the thermochromic layer is at or between 1 and 2%/° C. at a threshold temperature.