Patent application number | Description | Published |
20090067522 | WIRELESS COMMUNICATION SYSTEM USING PILOT SUBCARRIER ALLOCATION - A wireless communication system using pilot subcarrier allocation and a method of allocating the pilot subcarriers for use in downlink and uplink communication in a multiple-input multiple-output (MIMO) antenna system using orthogonal frequency division multiplexing (OFDM) modulation are disclosed. The method includes providing a frame structure comprising OFDM symbols in time domain and subcarriers in frequency domain and alternately allocating first pilot subcarriers for a first antenna and second pilot subcarriers for a second antenna in the time and frequency domains, wherein each of the alternating first pilot subcarriers and the second pilot subcarriers is separated by multiple of 9 subcarriers in the frequency domain and further allocated in two contiguous OFDM symbols. | 03-12-2009 |
20090067534 | WIRELESS COMMUNICATION SYSTEM USING PILOT SUBCARRIER ALLOCATION - A wireless communication system using pilot subcarrier allocation and a method of allocating the pilot subcarriers for use in downlink and uplink communication in a multiple-input multiple-output (MIMO) antenna system using orthogonal frequency division multiplexing (OFDM) modulation are disclosed. The method includes providing a frame structure comprising OFDM symbols in time domain and subcarriers in frequency domain and alternately allocating first pilot subcarriers for a first antenna and second pilot subcarriers for a second antenna in the time and frequency domains, wherein each of the alternating first pilot subcarriers and the second pilot subcarriers is separated by a multiple of 9 subcarriers in the frequency domain and further allocated in two contiguous OFDM symbols. | 03-12-2009 |
20110003553 | APPARATUS AND METHOD FOR ALLOCATING DOWNLINK CONTROL CHANNEL - A method for allocating a downlink control channel in a fractional frequency reuse (FFR) system, includes: dividing a service frequency band of the system into a plurality of frequency partitions including a first frequency partition corresponding to a first frequency reuse factor, a second frequency partition corresponding Kth frequency reuse factor, and a third frequency partition; setting a transmission power level for each of the plurality of divided frequency partitions; allocating a downlink common control channel including non-user specific (NUS) control information common to every user to a particular frequency partition corresponding to the highest transmission power level among the set transmission power levels; and transmitting the NUS control information through the particular frequency partition. | 01-06-2011 |
20120140677 | Method of Transmitting or Receiving Control Information in Wireless Communication System and Apparatus of the Same - A method of transmitting control information by a base station in a wireless communication system is provided. In the method, control information is broadcast, and negative-acknowledgement (NACK) information associated with the broadcasted control information is received from at least one User Equipment (UE), and then the control information is retransmitted to at least one UE in response to the NACK information. | 06-07-2012 |
20120155384 | METHOD FOR PARTITIONING CELL IDENTITIES ACCORDING TO CELL TYPE IN WIRELESS COMMUNICATION SYSTEM AND AN APPARATUS THEREFOR - A method of transmitting a cell type information, which is transmitted by a base station in a wireless communication system, is disclosed. The present invention includes broadcasting a first boundary point information (Z) between a cell identity of a public ABS (advanced base station) and a cell identity of a private ABS via an S-SFH SP3 (secondary-super frame header subpacket3), and broadcasting at least one second boundary point (K) information via an AAI-SCD (Advanced Air Interface_System Configuration Descriptor) message. In this case, the at least one second boundary point information (K) indicates a last index of cell identity corresponding to a specific ABS type. Further, an order of ABS types of the public ABS and an order of ABS types of the private ABS are pre-defined. | 06-21-2012 |
20130230010 | Method and Terminal Apparatus for Transmitting a Power Status Report in a Wireless Communication System - Method of transmitting a power status report by a mobile station in a wireless communication system according to the present application comprises receiving at least one of an offset value of a data channel or an offset value of a control channel for an uplink power control from a base station; determining a base uplink transmit power level for at least one of the data channel or control channel based on at least one of the received offset value of the data channel or the received offset value of the control channel; and transmitting the determined base uplink transmit power level to the base station. | 09-05-2013 |
20130329689 | METHOD AND APPARATUS FOR TRANSMITTING DATA IN WIRELESS COMMUNICATION SYSTEM - A method for transmitting data from a first User Equipment (UE) in a wireless communication system is provided. In the method, the first UE receives uplink data of a second UE from the second UE on a first uplink subframe of an Nth frame and transmits the received uplink data of the second UE to a base station on a first uplink subframe of an (N+1)th frame and then receives feedback information associated with the transmitted uplink data of the second UE from the base station. | 12-12-2013 |
20140045514 | CHANNELIZATION METHOD IN WHITESPACE BAND AND APPARATUS FOR THE SAME - A wireless communication system is disclosed. Specifically, a channelization method in a whitespace band and an apparatus for the same are disclosed. A method for providing whitespace operation information includes transmitting, by a first station (STA) to a second STA, a frame including a TV whitespace high throughput (TVHT) operation information field. The TVHT operation information field includes primary channel number, channel width, channel center frequency segment 0 and channel center frequency segment 1 subfields. A channel center frequency of frequency segment 0 or frequency segment 1 is determined based on a channel start frequency. The channel start frequency is determined as a function of a TV channel index corresponding to the frequency segment 0 or a TV channel index corresponding to the frequency segment 1. | 02-13-2014 |