Patent application number | Description | Published |
20080220790 | Radio resource management in wireless cellular networks having multihop relay stations - Radio resource management for wireless cellular networks equipped with relay stations for multi-hop packet or protocol data unit (PDU) relaying. | 09-11-2008 |
20080240275 | Scalable OFDM and OFDMA bandwidth allocation in communication systems - Techniques for bandwidth allocation in communication systems such as OFDM, OFDMA, or SC-FDMA systems to improve spectral efficiency and increase flexibility and adaptability with scalable single or multiple-carrier bandwidth allocation characteristics. | 10-02-2008 |
20080267110 | Signaling for Multi-Hop Relay in Wireless Communication Systems - Systems and techniques for signaling between a subordinate base station and a superordinate base station in a wireless network with wireless relay stations to inform the superordinate base station of a failure in establishing an uplink related to the subordinate base station and scheduling wireless resource allocation between a base station and one or more relay stations. | 10-30-2008 |
20090122771 | OFDM/OFDMA FRAME STRUCTURE FOR COMMUNICATION SYSTEMS - An OFDM/OFDMA frame structure technology for communication systems is disclosed. The OFDM/OFDMA frame structure technology comprises a variable length sub-frame structure with efficiently sized cyclic prefixes and efficient transition gap durations operable to effectively utilize OFDM/OFDMA bandwidth. Furthermore, the frame structure provides compatibility with multiple wireless communication systems. An uplink frame structure and a downlink frame structure are provided. | 05-14-2009 |
20090185632 | FLEXIBLE OFDM/OFDMA FRAME STRUCTURE FOR COMMUNICATION SYSTEMS - A flexible OFDM/OFDMA frame structure technology for communication systems is disclosed. The OFDM frame structure technology comprises a configurable-length frame which contains a variable length subframe structure to effectively utilize OFDM bandwidth. Furthermore, the frame structure facilitates spectrum sharing between multiple communication systems. | 07-23-2009 |
20090213833 | Systems, Apparatus and Techniques for Fast Cell Search and Accurate Synchronization in Wireless Communications - Techniques for fast cell search, selection and reselection for wireless communication systems such as OFDM or OFDMA communication systems. In various implementations of the described techniques, downlink subframes from base stations to mobile stations are designed to include information in form of preambles or post-ambles in one or more downlink subframes to facilitate cell search at receiving mobile stations at high speeds. The described preambles and post-ambles may also be used to improve the accuracy of signal synchronization in time and frequency. | 08-27-2009 |
20100046396 | ADAPTIVE MANAGEMENT METHOD FOR WIRELESS TRANSFER NETWORK CONTAINING BASE STATION AND WIRELESS RELAY STATIONS - An adaptive management method for a wireless communication network comprising a base station and wireless relay stations is disclosed, and the method is applied in a wireless communication network group comprising a base station and wireless relay stations subordinated to the base station. The method comprises the following steps of: (a) a management node in the wireless communication network group constructing a wireless network topology information structure of the group; (b) the management node updating the wireless network topology information of the group when a network topology relationship of the wireless communication network group changes; (c) the management node utilizing the wireless network topology information of the group and a corresponding strategy to manage wireless relay stations and mobile terminals subordinated to the management node. | 02-25-2010 |
20100054155 | UPDATE METHOD OF WIRELESS RELAY STATION LINK RELATION - A method for updating a connection relationship of a wireless relay station, comprises the following steps of: (a) a wireless relay station RS | 03-04-2010 |
20100115124 | Method for Improving Transmission Efficiency of Physical Layer Attributes in Wireless Communication System - A method for improving transmission efficiency of physical layer attributes in a wireless communication system is proposed, and the method comprises the following steps of: (a) defining one or more sets of physical layer channel basic attributes that must be supported, and each set being respectively represented by a value of a domain of attributes, that is, a value of Profile; (b) a transmitting apparatus sending a physical layer channel description information, wherein the value of Profile is used to represent the physical layer channel basic attributes supported by the apparatus; (c) after receiving the channel description information, based on the value of Profile within the information, a receiving apparatus judging whether a set of physical layer channel basic attributes corresponding to the value is supported. | 05-06-2010 |
20100135207 | Method, System, and Wireless Frame Structure for Supporting Different Mode of Multiple Access - A method, system, and wireless frame structure for supporting different modes of multiple radio access. The described system comprises base stations and terminals. There is a group of base stations at the same location, which include at least two synchronized base stations on the same frequency band, supporting different multiple access techniques in downlink or uplink. The base stations in the described group transmit downlink frames in a negotiated downlink zone and receive uplink frames in a negotiated uplink zone respectively, and the zones of the base stations are not overlapped. Each terminal accesses to one of the base stations according to the downlink multiple access technique that it supports, and receives/transmits signals in the downlink zone/uplink zone allocated to the base station. | 06-03-2010 |
20100142405 | METHOD FOR JOINING A WIRELESS COMMUNICATION DEVICE TO A WIRELESS TRANSMISSION NETWORK - A method for a device to join a wireless communication network, after the device accesses to the wireless communication network group through a source node, the method comprising the following steps of: (a) if the device needs a handover, completes the handover successfully by accessing to a target node and establishes a service connection, proceeding to step (b), otherwise proceeding to step (c); (b) a management node of the wireless communication network group to which the target node accessed to by the device belongs updating a stored wireless network topology information of the wireless network group, to complete the joining of said wireless communication device, and the method ending; (c) a management node of the wireless communication network group to which the source node accessed to by the device belongs updating a stored wireless network topology information of the wireless communication network group, to complete the joining of said device. | 06-10-2010 |
20100202322 | Method for Terminating Connection to Wireless Relay Station - A method for terminating connections to wireless relay stations (RS), applied in a system comprising a wireless communication network set, which comprises a base station (BS) and RSs subordinated to the base station. The method comprises: (a) a wireless RS, RS | 08-12-2010 |
20110032850 | SIGNAL TRANSMISSION WITH FIXED SUBCARRIER SPACING WITHIN OFDMA COMMUNICATION SYSTEMS - A station is disclosed that is configured for signal transmission in an Orthogonal Frequency Division Multiple Access (OFDMA) system. The station includes a processor configured to fix a subcarrier spacing to a predetermined value for one or more subframes in all available bandwidths. The station further includes a transmitter configured to transmit a signal having the fixed subcarrier spacing, regardless of a frame structure of the one or more subframes. According to certain embodiments, the predetermined value may be divided evenly by at least one channel raster. The predetermined value may be 12.5 KHz, according to certain embodiments. Alternatively, the predetermined value is 6.25 KHz for one or more low mobility mobile stations, and/or the predetermined value is 25 KHz for one or more high mobility mobile stations. The station may be a mobile station or a base station configured for uplink and downlink transmission. | 02-10-2011 |
20110096783 | FLEXIBLE OFDM/OFDMA FRAME STRUCTURE FOR COMMUNICATION SYSTEMS - A flexible OFDM/OFDMA frame structure technology for communication systems is disclosed. The OFDM frame structure technology comprises a configurable-length frame which contains a variable length subframe structure to effectively utilize OFDM bandwidth. Furthermore, the frame structure facilitates spectrum sharing between multiple communication systems. | 04-28-2011 |
20110103406 | FLEXIBLE OFDM/OFDMA FRAME STRUCTURE FOR COMMUNICATION SYSTEMS - A flexible OFDM/OFDMA frame structure technology for communication systems is disclosed. The OFDM frame structure technology comprises a configurable-length frame which contains a variable length subframe structure to effectively utilize OFDM bandwidth. Furthermore, the frame structure facilitates spectrum sharing between multiple communication systems. | 05-05-2011 |
20110110310 | FRAME STRUCTURE FOR MULTI-HOP RELAY IN WIRELESS COMMUNICATION SYSTEMS - Implementations of systems and techniques for scheduling wireless transmission of data blocks between a base station (BS) and one or more relay stations (RSs) in a wireless relay communication network. | 05-12-2011 |
20110116485 | METHODS FOR SUPERFRAME/FRAME OVERHEAD REDUCTION WITHIN OFDMA-BASED COMMUNICATION SYSTEMS - A method for tessellating a subframe using maximal-sized bricks. A brick bandwidth and a brick time duration are computed based on the heights and widths of the bursts in the subframe. Bursts within the brick-tessellated subframe are referenced using a brick-based coordinate system in which burst location and size are specified in units of bricks. A method for assembling and disassembling brick-based superframes is also disclosed. Bricked-based superframes are assembled and disassembled using a Superframe Preamble, a Superframe Control Header (SFCH), a Superframe Downlink Map (SDL-MAP), a Superframe Uplink MAP (SUL-MAP) and brick-structured downlink and uplink frames. | 05-19-2011 |
20130094432 | FRAME STRUCTURE FOR MULTI-HOP RELAY IN WIRELESS COMMUNICATION SYSTEMS - Implementations of systems and techniques for scheduling wireless transmission of data blocks between a base station (BS) and one or more relay stations (RSs) in a wireless relay communication network. | 04-18-2013 |
20130114509 | OFDM/OFDMA FRAME STRUCTURE FOR COMMUNICATION SYSTEMS - An OFDM/OFDMA frame structure technology for communication systems is disclosed. The OFDM/OFDMA frame structure technology comprises a variable length sub-frame structure with efficiently sized cyclic prefixes and efficient transition gap durations operable to effectively utilize OFDM/OFDMA bandwidth. Furthermore, the frame structure provides compatibility with multiple wireless communication systems. An uplink frame structure and a downlink frame structure are provided. | 05-09-2013 |
20140050149 | OFDM/OFDMA FRAME STRUCTURE FOR COMMUNICATION SYSTEMS - An OFDM/OFDMA frame structure technology for communication systems is disclosed. The OFDM/OFDMA frame structure technology comprises a variable length sub-frame structure with efficiently sized cyclic prefixes and efficient transition gap durations operable to effectively utilize OFDM/OFDMA bandwidth. Furthermore, the frame structure provides compatibility with multiple wireless communication systems. An uplink frame structure and a downlink frame structure are provided. | 02-20-2014 |