-
公开(公告)号：KR101658884B1
公开(公告)日：2016-09-22
申请号：KR1020150045582
申请日：2015-03-31
Applicant: 성균관대학교산학협력단
CPC classification number: H04W24/02 , H04W16/08 , H04W74/0833
Abstract: 본발명은이종네트워크에서의스몰셀기지국의전송범위확장방법을개시하고있다. 상기방법은상기스몰셀기지국에접속하는성공단말의수를유휴(idle) 랜덤액세스기회(RAO: Random Access Opportunity)를기반으로추정하는단계및 상기추정된예상성공단말의수와실제측정된측정성공단말의수를비교하여전송범위확장거리를결정하는단계를포함한다.
Abstract translation: 根据本发明，公开了异构网络中小小区基站的传输范围扩展方法。 该方法包括以下步骤：基于空闲随机接入机会，估计连接到小小区基站的成功终端数量; 并且将成功终端的估计数与实际测量的成功终端数量进行比较，以确定传输范围扩展距离。
-
公开(公告)号：KR101589526B1
公开(公告)日：2016-01-28
申请号：KR1020150022348
申请日：2015-02-13
Applicant: 성균관대학교산학협력단
CPC classification number: G06K7/10029 , G06K7/0008 , G06K7/0095 , G06K7/10069 , G06K19/0723 , G06K7/10019
Abstract: 본발명은 RFID 리더기가복수개의 RFID 태그의충돌방지를위한방법을개시하고있다. 상기방법은하나의슬롯에서둘 이상의태그가동시에응답하여충돌이일어났음에도복수의태그를인식하는데성공한충돌회복슬롯내에서, 적어도하나의인식된태그의데이터전송이이루어지도록상기충돌회복슬롯의길이를가변시키는단계를포함한다.
Abstract translation: 根据本发明，公开了一种使RFID读取器能够防止多个RFID标签的碰撞的方法。 该方法包括改变冲突恢复槽的长度的步骤，以使得能够在冲突恢复时隙中进行至少一个识别的标签的数据传输，即使由于同时响应而产生冲突，成功地识别多个标签 在一个插槽中至少有两个标签。
-
33.发明授权
公开(公告)号：KR101385639B1
公开(公告)日：2014-04-17
申请号：KR1020120142774
申请日：2012-12-10
Applicant: 성균관대학교산학협력단
Abstract: The present invention is to provide a method and apparatus of identifying a radio frequency identification (RFID) tag based on dynamic framed slotted ALOHA (DFSA) capable of reducing the loss of the RFID tag by determining the size of an optimal frame in consideration of the collision from recognizing the RFID tag of an RFID reader and the error of a channel, to improve the recognition rate of the RFID tag in an environment in which the RFID tag moves by the relationship of the size of the frame and the number of the frame. [Reference numerals] (AA) Moving direction of a tag
Abstract translation: 本发明是提供一种基于动态成帧时隙ALOHA（DFSA）识别射频识别（RFID）标签的方法和装置，该方法和装置能够考虑到最佳帧的大小来确定RFID标签的损失 识别RFID读取器的RFID标签的碰撞和通道的错误，以提高RFID标签在RFID标签移动的环境中的识别率，该环境中RFID标签的尺寸与帧的数量之间的关系 。 （附图标记）（AA）标签的移动方向
-
公开(公告)号：KR1020120020539A
公开(公告)日：2012-03-08
申请号：KR1020100084204
申请日：2010-08-30
Applicant: 성균관대학교산학협력단
Abstract: PURPOSE: A power controlled frequency reuse method in OFDMA(Orthogonal Frequency Division Multiple Access) system is provided to allocate a segment of subcarrier set to each cell following a predetermined order, thereby reducing co-channel interference between cells. CONSTITUTION: Subcarriers in a system bandwidth is divided into M sub-channel set(S210). The sub-channel set is divided into M segments(S220). The segments are classified into a plurality of classes(S230). A transmission power is differentially allocated following the classes(S240). A segment allocation sequence is determined by the class which is determined by a cell type and a channel state of a user terminal A subcarrier is allocated to the user terminal according to a determined segment allocation sequence(S250).
Abstract translation: 目的：提供OFDMA（Orthogonal Frequency Division Multiple Access，正交频分多址）系统中的功率控制频率复用方法，以按照预定的顺序向每个小区分配子载波集，从而减少小区之间的同信道干扰。 构成：将系统带宽中的子载波分为M个子信道集（S210）。 子通道组分为M段（S220）。 这些段被分类为多个类（S230）。 在类别之后差分地分配发送功率（S240）。 段分配序列由由用户终端A的小区类型和信道状态确定的类确定，根据所确定的段分配序列将副载波分配给用户终端（S250）。
-
公开(公告)号：KR1020110022420A
公开(公告)日：2011-03-07
申请号：KR1020090080008
申请日：2009-08-27
Applicant: 성균관대학교산학협력단
Abstract: PURPOSE: A method for cooperative communication for an IEEE 802.11 wireless LAN is provided to improve the entire processing rate of an IEEE 802.11 wireless LAN and ensure the fairness in the processing rate of each device. CONSTITUTION: A method for cooperative communication for an IEEE 802.11 wireless LAN comprises the steps of: considering the cooperative communication determination information provided from a reception device in order for a repeater to determine whether or not cooperative communication is necessary if data to be transmitted exist in the repeater; selecting a transmission device based on the signal strength of each transmission device if the repeater determines to perform the cooperative communication; receiving the relay data transmitted from the transmission device selected by the repeater; transmitting the received relay data to a reception device; and considering the cooperative communication determination information provided from the reception device to determine whether or not cooperative communication is necessary if the repeater has the data to be transmitted.
Abstract translation: 目的：提供IEEE 802.11无线局域网的协作通信方法，以提高IEEE 802.11无线局域网的整体处理速率，确保各设备处理速率的公平性。 构成：用于IEEE 802.11无线LAN的协作通信的方法包括以下步骤：考虑从接收设备提供的协作通信确定信息，以便中继器确定是否需要协作通信，如果要发送的数据存在于 中继器 如果中继器确定执行协作通信，则基于每个传输设备的信号强度来选择传输设备; 接收由所述中继器选择的从所述传输设备发送的中继数据; 将接收到的中继数据发送到接收装置; 并且如果中继器具有要发送的数据，则考虑从接收装置提供的协作通信确定信息来确定是否需要协作通信。
-
Patent Agency Ranking
公开(公告)号：KR1020100032684A
公开(公告)日：2010-03-26
申请号：KR1020080091670
申请日：2008-09-18
Applicant: 성균관대학교산학협력단
CPC classification number: H04W16/02 , H04J11/005 , H04J11/0056 , H04L5/0007 , H04L5/0032 , H04W28/16 , H04J1/12 , H04W28/04
Abstract: PURPOSE: A fractional frequency reusing method with an ordering scheme is provided to improve performance of an OFDM system by reducing inter-channel interference. CONSTITUTION: Cells are classified as one or more types according to a cluster size. A dedicated sub channel set is allocated by a frequency division scheme according to the cell type. The type number of the cell is same as the cluster size. A process of assigning the dedicated sub channel set comprises the step of indexing all subcarriers of each cell by successive method. A process of assigning the dedicated sub channel set comprises the step of partitioning the all sub carrier into the 2M number of sub channel sets by operating M calculation with a module for a corresponding index number.
Abstract translation: 目的：提供一种具有排序方案的分数频率重用方法，以通过减少信道间干扰来提高OFDM系统的性能。 规定：根据群集大小，将细胞分类为一种或多种类型。 通过根据小区类型的分频方案来分配专用子信道集合。 单元格的类型号与集群大小相同。 分配专用子信道集合的过程包括通过连续方法索引每个小区的所有子载波的步骤。 分配专用子信道集合的处理包括通过用相应索引号的模块操作M计算来将全部子载波划分成2M个子信道集合的步骤。
-
公开(公告)号：KR1020090053577A
公开(公告)日：2009-05-27
申请号：KR1020070120468
申请日：2007-11-23
Applicant: 성균관대학교산학협력단
CPC classification number: H04W8/005 , G06K7/0008 , G06K7/10049 , G06K7/10029 , H04L12/4645
Abstract: 본 발명은 RFID 시스템에서 태그 수 추정 방법 및 이를 이용한 태그 인식 방법에 관한 것으로, 리더가 식별 가능 영역 내의 태그를 비트 마스크를 이용하여 적정 수의 그룹으로 분할하는 제1 단계; 상기 제1 단계에서 분할된 그룹 중 제1 그룹에 파일럿 프레임(L
p )을 적용하여 태그의 인식을 수행하는 제2 단계; 파일럿 프레임의 종료 후, 태그의 충돌확률을 계산하는 제3 단계; 태그의 충돌확률에 따라, 파일럿 프레임의 끝에 추가 타임슬롯(L
add )을 할당하거나 또는 새로운 프레임(L
l )을 생성하여, 파일럿 프레임 동안 인식되지 않은 제1 그룹의 태그를 인식하는 제4 단계를 구비하는 것을 특징으로 한다.
본 발명은 이와 같은 구성을 구비함으로써, 태그 수 추정에 소모되는 타임슬롯의 수를 현저하게 감소시키고 태그의 충돌을 효율적으로 방지할 수 있어, 고속의 태그 수 추정 및 태그 인식이 가능하다.
RFID, 파일럿 프레임, 비트 마스크, 태그 수 추정, 태그 인식-
公开(公告)号：KR1020090020953A
公开(公告)日：2009-02-27
申请号：KR1020070085614
申请日：2007-08-24
Applicant: 삼성전자주식회사 , 성균관대학교산학협력단
IPC: H04B7/26
CPC classification number: H04W16/12 , H04W72/0453 , H04W72/0493
Abstract: A method for allocating frequency band in a wireless communication system is provided to assign data transmission frequency bandwidth to the terminal attempting communication with a base station in frequency-divided cell. A total frequency band is divided to a central frequency band and a plurality of outer frequency bands which do not overlap(S110). A first outer frequency band and the central frequency band are allocated in the central region of a first cell(S130). The first outer frequency band is allocated in the outer region of the first cell(S140). The second outer frequency band and the central frequency band are allocated in the central region of the second cell(S150). The second outer frequency band is allocated in the outer region of the second cell(S160).
Abstract translation: 提供了一种用于在无线通信系统中分配频带的方法，用于向尝试与分频小区中的基站进行通信的终端分配数据传输频率带宽。 总频带被划分为不重叠的中心频带和多个外频带（S110）。 第一外频带和中心频带被分配在第一小区的中心区域（S130）。 第一外频带被分配在第一小区的外部区域（S140）。 第二外频带和中心频带被分配在第二小区的中心区域（S150）。 第二外频带被分配在第二小区的外部区域（S160）。
-
公开(公告)号：KR1020080058068A
公开(公告)日：2008-06-25
申请号：KR1020060132162
申请日：2006-12-21
Applicant: 성균관대학교산학협력단
Abstract: A system and a method for estimating the number of tags and preventing tag collision are provided to recognize an RFID(Radio Frequency IDentification) tag quickly by estimating the number of RFID tags correctly in an RFID system, transmitting an RF signal in an FSA(Framed-Slotted ALOHA) mode based on the estimated number of RFID tags, and separating the colliding RFID tags in a binary tree mode. A recognizer(10) transmits an instruction message to RFID tags and receives information from the RFID tags, and a collision manager(11) recognizes collision among the RFID tags and calculates a collision probability of the RFID tags. A tag quantity estimator(12) estimates the number of RFID tags by using the collision probability. A reader controller(13) generates the instruction message, sets the size of a frame used for a recognition process depending on the number of RFID tags, and enables an RFID reader(100) to recognize the RFID tag. The RFID performing an RFID recognition process by dividing the process into a tag quantity estimation process and a recognition process, recognizes the RFID tags in a FSA mode by using the estimated number of RFID tags, and recognizes the colliding tag in a binary tree mode when collision occurs.
Abstract translation: 提供一种用于估计标签数量和防止标签冲突的系统和方法，以通过在RFID系统中正确地估计RFID标签的数量来快速识别RFID（射频识别）标签，在FSA中发送RF信号（Framed 基于估计的RFID标签数量的分段ALOHA）模式，并以二叉树模式分离冲突RFID标签。 识别器（10）向RFID标签发送指令消息并从RFID标签接收信息，并且碰撞管理器（11）识别RFID标签之间的冲突并计算RFID标签的冲突概率。 标签量估计器（12）通过使用碰撞概率估计RFID标签的数量。 读取器控制器（13）生成指令消息，根据RFID标签的数量设置用于识别处理的帧的大小，并且使得RFID读取器（100）能够识别RFID标签。 通过将处理划分为标签数量估计处理和识别处理来执行RFID识别处理的RFID通过使用估计的RFID标签数量以FSA模式识别RFID标签，并且以二叉树模式识别冲突标签，当 碰撞发生。
-
40.发明授权
-
-
-
-
-
-
-
-
-
Search Results
106
records
(took 0.038 seconds)
