Innowireless Co., Ltd.

Qucell Networks Co., Ltd.

Seung Hwan Ji

Jin Soup Joung

Jae Hyun Park

Jinsoup Joung

Kyeong Min Ha

Jun Wan Park

Myung Jong Kim

Hyun Seok Lee

Jae Woo Lee

Young Su Kwak

Cheoljin Lee

Oh Keol Kwon

Min Ho Yu

Cheol Jin Lee

Beom-Sik Kim

Sang-lk Cho

Seo Kyun Jang

Woong Jong Jeong

Ro Mi Choe

Yong Hee Kim

Jae Sung Lee

Provided is a method of performing network listening (NL) for a radio unit (RU) in a Cloud-Radio Access Network (C-RAN) structure base station in which a certain RU distinguishes and automatically detects signals of neighboring RUs through NL in a C-RAN structure base station to thereby enable optimization and automation of configuration setting of multiple cells and multiple RUs. The method of performing NL for a RU in a base station having a structure of a C-RAN, performed between a C-RAN base station body and a RU in the C-RAN supporting multiple cells and multiple RUs, includes the steps of: (a) searching for, by the C-RAN base station body, RU configuration (a cell-RU combination) information constructed therein to instruct an RU that is to perform NL to perform the NL while instructing a RU using the same physical cell identifier (PCI) as the RU that is to perform the NL to turn off a radio frequency (RF) transmit (Tx) output thereof during performance of the NL of the RU that is to perform NL; (b) performing, by the RU instructed to perform the NL, the NL with a RF transmit (Tx) output thereof turned off; (c) turning on, by the RU instructed to perform the NL, the RF transmit (Tx) output thereof after completion of the performance of the NL while reporting a result of the performance of the NL and completion of the NL to the C-RAN base station body; and (d) instructing, by the C-RAN base station body, the RU using the same PCI to turn on the RF transmit (Tx) output thereof.

Method of performing network listening for RU in cloud-radio access network structure base station

A resource allocation algorithm and operation procedure for user equipment (UE) to efficiently report cell global identity (CGI) information to an evolved node base station (eNB) in an automatic neighbor relation (ANR) operation procedure in a wireless communication system. According to an operating method of an eNB for CGI information reporting in a wireless communication system, a serving eNB receives a CGI information report and perform an ANR operation to maintain service quality through effective handover of UE at the edge of the service area of the serving eNB. When there is uplink/downlink data, the serving eNB stops data allocation to the UE and requests measurement reports (MRs) of neighbor eNBs, and the UE can be switched to a discontinuous reception (DRX) state during a DRX-inactivity time. Accordingly, it is possible to ensure decoding of a broadcast channel (BCH) of a neighbor cell and report CGI information.

Operating method of ENB for CGI information reporting in wireless communication system

Provided is a method for measuring a throughput of a backhaul network. The method includes: estimating an available bandwidth of a backhaul network; determining the sizes (P) of packet trains by using the estimated available bandwidth; and calculating a virtual throughput of the backhaul network by using at least one parameter by transmitting N packet trains having the determined sizes to the backhaul network (N is a natural number that is equal to or greater than 2).

Method and appratus for measuring a throughput of a backhaul network

Provided is a media access control processing unit (MAC) sharing method applied to a fifth generation (5G), which is a next generation, mobile communication system and making it possible to efficiently share a plurality of MACs so as to efficiently distribute and process traffic of user equipment (UE).

MAC sharing method for distributed processing of UE traffic in mobile communication system

A method of controlling power of a physical layer device of a base station in a mobile communication system which is applied to a fifth generation (5G), that is the next generation, mobile communication system and makes it possible to efficiently control the power of physical layer devices managing each beam spot, such as a radio frequency (RF) module and a modem, according to the number of pieces of user equipment (UE) or an amount of traffic processed by the beam spot. The method is applied to a mobile communication system including a plurality of media access control processing units (MACs) corresponding to a plurality of modems on a one-to-one basis and the plurality of modems each connected with one or more RF modules covering beam spots dividing a base station cell.

Method of controlling power of physical layer device of base station in mobile communication system

A method of adjusting the coverage of a small cell for efficient use of cell resources in which the position of user equipment (UE) in the small cell is estimated using timing advance information of the UE, and the coverage is adjusted in consideration of a load state of the cell and a channel state of the UE.

Method of adjusting coverage of small cell for efficient use of cell resources

A method of offloading wireless data in a core network using a femtocell which can reduce a traffic load of a mobile communication network and maximize convenience of a user by determining to offload the wireless data passing through the core network onto a local network according to whether the data is real-time data is provided.

Method of offloading wireless data in core network using femtocell

Disclosed herein are a WiMAX system analyzer having an RAS emulation function and a method of acquiring UL synchronization and testing a PSS. The WiMAX system analyzer includes a clock counter, a D/A conversion unit, an A/D conversion unit, an RF processing unit, switching means, a signal generation unit, a signal analysis unit, and control means. The clock counter creates a frame number. The D/A conversion unit converts a DL sub-frame into an analog signal. The A/D conversion unit converts a UL sub-frame signal into digital data. The RF processing unit RF-modulates the DL sub-frame, outputs the modulated DL sub-frame, and demodulating a modulated UL sub-frame. The switching means connects the RF processing unit to the D/A conversion unit or the A/D conversion unit. The signal generation unit assigns a CID, and creating a DL sub-frame. The signal analysis unit decodes the UL sub-frame, and conducts various analyses. The control means performs control so that the switching means connects to the A/D conversion unit.

WiMAX system analyzer having RAS emulation function and method of acquiring UL synchronization and testing PSS using the same

Disclosed herein is a method for generating a test signal for testing the accuracy of the CINR measurement of a subscriber station. The method includes step (a) of checking a preamble code corresponding to a predetermined cell ID, reading corresponding preamble data from a preamble code table, and taking it as desired preamble data, step (b) of completing generation of desired signal data by generating desired pilot data and various information data, step (c) of randomly selecting one preamble code from among preamble codes corresponding to cell IDs other than the cell ID, reading corresponding preamble data from the preamble code table, and taking the preamble data as interference preamble data, step (d) of generating interference pilot data, and step (e) of generating test signal data by adding the interference preamble data and the interference pilot data to the desired signal data.

Method for generating test signal for testing accuracy of carrier to interference plus noise ratio measurement of subscriber station through base station emulator

Growing community of inventors

Seongnam-si, South Korea

Seung Hwan Ji