1
Jong Min Cheong, Tae Gue Kim, Sang Hoon Seo, Jae Sung Lim, Sun Park: Microcellular mobile communication system. SK Telecom, Sheridan Ross P C, November 5, 2002: US06477154 (108 worldwide citation)

A microcelluar mobile communication system which performs various functions such as a centralized management of resources, a capacity increase, a Base Station Transceiver System(BTS) miniaturization, a synchronization between micro base stations, a dynamic resource management, a softer handover betw ...


2
Yoon Chul Sik, Kim Jae Heung, Yeo Kun Min, Lim Soon Yong, Ryu Byung Han: Method and apparatus for requesting and reporting channel quality information in mobile communication system. Electronics And Telecommunications Research Institute, Samsung Electronics, Kt Corporation, SK Telecom, Ktfreetel, Hanaro Telecom, Yoon Chul Sik, Kim Jae Heung, Yeo Kun Min, Lim Soon Yong, Ryu Byung Han, YOU ME PATENT AND LAW FIRM, June 30, 2005: WO/2005/060132 (76 worldwide citation)

Disclosed is a method and device for requesting and reporting channel quality information in a mobile communication system. A base station a locates a dedicated feedback channel for channel quality information report to an uplink radio resource, transmits the allocation information to subscriber sta ...


3
Seong Soo Park, Jin Ho Cho, In Hong Lee, Jin Ick Lee: Handover method in wireless telecommunication system supporting USTS. SK Telecom, Blakely Sokoloff Taylor & Zafman, May 10, 2005: US06892071 (74 worldwide citation)

A handover method in wireless telecommunication system supporting USTS is disclosed. The method for performing a handover of a mobile station in an asynchronous wireless telecommunication system supporting an uplink synchronous transmission scheme (USTS) mode, includes the steps of: a) performing a ...


4
Ha Jae Jeung, Jun Soo Yook: Repeating installation using telephone line. SK Telecom, Blakely Sokoloff Taylor & Zafman, May 18, 2004: US06738597 (66 worldwide citation)

A repeating apparatus of the present invention converts a data signal from the mobile switching center to an intermediate frequency signal and transfers the intermediate frequency signal to an unused telephone line and a dedicated line network. The apparatus converts the intermediate frequency signa ...


5
Ehret Andreas, Hoerich Holger, Schug Michael, Schneider Andreas: Apparatus for generating and interpreting a data stream having a series of segments using data in subsequent data frames. Dolby Sweden, SK Telecom, Ehret Andreas, Hoerich Holger, Schug Michael, Schneider Andreas, ZINKLER Franz, June 21, 2007: WO/2007/068294 (66 worldwide citation)

An apparatus for generating a data stream having a series of segments using data organized in subsequent data frames, a data frame having more important and less important data. It comprises a packetiser for packetising data from a data frame into the series of segments having a first segment and a ...


6
Jae Sung Lim, Han Sik Jang, Sul Gi Yim, Hae Kwan Jung: Method for providing cell location service. SK Telecom, Sheridan Ross P C, July 10, 2001: US06259923 (61 worldwide citation)

The present invention provides a method for providing cell location service in digital mobile communication network, without additional device for cell location service. The cell location center requests that a mobile station provide current location of the mobile station. Then, the mobile station t ...


7
Yoon Chul Sik, Kim Jae Heung, Yeo Kun Min, Lim Soon Yong, Ryu Byung Han: A method for requesting and reporting channel quality information in wireless system and apparatus thereof. Electronics And Telecommunications Research Institute, Samsung Electronics, Kt Corporation, SK Telecom, Ktfreetel, Hanaro Telecom, Yoon Chul Sik, Kim Jae Heung, Yeo Kun Min, Lim Soon Yong, Ryu Byung Han, YOU ME PATENT AND LAW FIRM, August 11, 2005: WO/2005/072073 (55 worldwide citation)

A method and device for requesting and reporting channel quality information in a mobile communication is disclosed. Wherein an uplink radio resource for a subscriber station having data to transmit is allocated and a CQI indicator for requesting channel quality information is added to the allocatio ...


8
Yoon Chul Sik, Kim Jae Heung, Yeo Kun Min, Lim Soon Yong, Ryu Byung Han: A method for requesting and reporting channel quality information in wireless portable internet system. Electronics And Telecommunications Research Institute, Samsung Electronics, Kt Corporation, SK Telecom, Ktfreetel, Hanaro Telecom, Yoon Chul Sik, Kim Jae Heung, Yeo Kun Min, Lim Soon Yong, Ryu Byung Han, YOU ME PATENT AND LAW FIRM, August 11, 2005: WO/2005/074312 (46 worldwide citation)

A method for requesting and reporting channel quality information (CQI) in a wireless portable Internet system is disclosed. Timing of a channel quality information request by a base station is determined, existence of an automatic repeat request acknowledgment (ARQ_ACK) message of downlink d ...


9
Sang Hoon Seo, Tae Gue Kim, Tae Hoon Park, In Hong Lee, Sun Park: Method for carrying out handoff between macrocell and microcell in hierarchical cell structure. SK Telecom, Blakely Sokoloff Taylor & Zafman, December 5, 2006: US07145890 (45 worldwide citation)

A method for carrying out an idle handoff from a macrocell to a microcell (picocell) in a hierarchical cell structure includes the steps of: a) allocating different frequency assignments (FA) to the macrocell and the microcell in a same service band, to construct the hierarchical cell structure; b) ...


10
Kim Jin Yeong, Lee Sang Yeon: Transmitting/receiving apparatus for ofdm system. SK Telecom, June 19, 2002: KR1020000074839 (36 worldwide citation)

PURPOSE: A transmitting/receiving apparatus for an OFDM(Orthogonal Frequency Division Multiplexing) system is provided to improve bit error probability through a turbo coding when transmitting data by an OFDM transmission method in wireless channel environment. CONSTITUTION: An OFDM transmitting app ...