公开(公告)号：KR1020040056987A

公开(公告)日：2004-07-01

申请号：KR1020020083738

申请日：2002-12-24

Applicant: 한국전자통신연구원

Inventor： 강홍구 ,  김현재 ,  장일순 ,  김영일 ,  김기선

IPC: H04L27/26

Abstract: PURPOSE: A method for allocating sub-channels in OFDM communication and a recoding medium for storing an allocation program are provided to form a simple bit-loading algorithm by using a modulation/demodulation level as feedback information. CONSTITUTION: A base station receives modulation/demodulation levels and average receiving S/N ratios from each terminal(S1). Users are sorted according to the average receiving S/N ratios(S2). Sub-channels are selected by using the maximum modulation/demodulation level and the maximum average receiving S/N ratio after the users are sorted according to the average receiving S/N ratio(S3). The selected sub-channels are assigned to the users(S4-S7).

Abstract translation: 目的：提供一种在OFDM通信中分配子信道的方法和用于存储分配程序的记录介质，以通过使用调制/解调级别作为反馈信息形成简单的比特加载算法。 构成：基站从每个终端接收调制/解调电平和平均接收信噪比（S1）。 用户根据平均接收信噪比（S2）进行排序。 通过使用最大调制/解调级别和根据平均接收S / N比对用户进行排序后的最大平均接收S / N比来选择子信道（S3）。 所选择的子信道被分配给用户（S4-S7）。

公开(公告)号：KR1020030052827A

公开(公告)日：2003-06-27

申请号：KR1020010082943

申请日：2001-12-21

Applicant: 한국전자통신연구원

Inventor： 박지수 ,  박남진 ,  김영일 ,  문영진 ,  김현재

IPC: H04B7/155

CPC classification number: H04W92/12 ,  H04W56/001

Abstract: PURPOSE: A device for interfacing an RNC(Radio Network Controller) of a base station in a wireless communication system is provided to supply a physical communication path between the base station and the RNC, and to transmit control information through an HDLC protocol communication path as a duplexing control channel, thereby supporting multimedia and subscriber roaming services. CONSTITUTION: A router interface module(321) performs a router interface within a base station transceiver(31). An AAL2/5 form conversion module(322) converts AAL2-type ATM traffic into AAL5-type ATM traffic while processing voice and image traffic, and converts the AAL5-type ATM traffic into the AAL2-type ATM traffic, and bypasses the AAL5-type ATM traffic. A line interface module(326) interfaces with an RNC(40). An HDLC module(323) transmits control information to a base station control processor when a failure is generated. A CPU module(324) checks and operates each module state of an RNC interface(32), and switches a channel. An SAR module(325) disassembles and assembles AAL5 frames. A clock module(327) inputs a network synchronous clock, transmits a reference clock to a CKGD(Clock Generation amp; Distribution) unit(33), receives the reference clock, and synchronizes links between the RNC(40) and a base station.

Abstract translation: 目的：提供一种用于在无线通信系统中与基站的RNC（无线网络控制器）进行接口的设备，以提供基站与RNC之间的物理通信路径，并通过HDLC协议通信路径发送控制信息， 双工控制信道，从而支持多媒体和用户漫游服务。 构成：路由器接口模块（321）在基站收发器（31）内执行路由器接口。 AAL2 / 5格式转换模块（322）在处理语音和图像流量时将AAL2型ATM流量转换为AAL5型ATM流量，并将AAL5型ATM流量转换为AAL2型ATM流量，并绕过AAL5- 类型ATM流量。 线路接口模块（326）与RNC（40）接口。 当产生故障时，HDLC模块（323）向基站控制处理器发送控制信息。 CPU模块（324）检查并操作RNC接口（32）的每个模块状态，并切换通道。 SAR模块（325）拆卸和组装AAL5帧。 时钟模块（327）输入网络同步时钟，将参考时钟发送到CKGD（Clock Generation amp; Distribution）单元（33），接收参考时钟，并且同步RNC（40）与基站之间的链路。