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    • 22. 发明申请
    • METHOD OF PERFORMING HANDOVER IN WIRELESS COMMUNICATION SYSTEM AND MOBILE AND BASE STATION
    • 在无线通信系统和移动台站中执行切换的方法
    • WO2008002092A3
    • 2009-06-04
    • PCT/KR2007003157
    • 2007-06-28
    • KOREA ELECTRONICS TELECOMMSAMSUNG ELECTRONICS CO LTDCHA JAE-SUNYOON CHUL-SIK
    • CHA JAE-SUNYOON CHUL-SIK
    • H04W36/08H04W92/20
    • H04W36/08H04W92/20
    • Disclosed are handover methods of a mobile station (MS) in a wireless communication system, and a base station (BS) and a mobile station (MS) for the same. A list of neighboring base stations (BSs) that can accept a handover of a mobile station (MS) is shared by the mobile station (MS) and a serving base station (S-BS) before the mobile station (MS) performs the handover so as to reduce handover delay time in a high speed environment through a simplified control message exchange process. In addition, the active base station set managed by the mobile station (MS) and the serving base station (S-BS) can be managed with consideration of radio signal quality and resource state of each of the neighboring base stations (BSs) included in the active base station set, and thus when the mobile station (MS) attempts a network re-entry process to a target base station (BS) that is not ready for the handover of the mobile station (MS) due to a loss of a handover control message, a handover failure due to a lack of radio resources can be prevented, thereby increasing a handover success rate.
    • 公开了无线通信系统中的移动台(MS)以及用于其的基站(BS)和移动台(MS)的切换方法。 可以接受移动台(MS)的切换的相邻基站(BS)的列表在移动台(MS)执行切换之前被移动台(MS)和服务基站(S-BS)共享 以便通过简化的控制消息交换过程来减少高速环境中的切换延迟时间。 此外,考虑到包括在每个相邻基站(BS)中的每个相邻基站(BS)的无线电信号质量和资源状态,可以管理由移动台(MS)和服务基站(S-BS)管理的活动基站集合 活动基站设置,因此当移动站(MS)由于丢失了移动台(MS)而对未准备好进行移动台(MS)的切换的目标基站(BS)尝试网络重入进程 切换控制消息,可以防止由于缺乏无线电资源而导致的切换失败,从而增加切换成功率。
    • 27. 发明申请
    • METHOD OF OPERATING RANDOM ACCESS CHANNEL IN MOBILE COMMUNICATION SYSTEM
    • 在移动通信系统中操作随机访问信道的方法
    • WO2008038872A2
    • 2008-04-03
    • PCT/KR2007001616
    • 2007-04-03
    • KOREA ELECTRONICS TELECOMMLIM KWANG-JAEKIM SUNG-KYUNGYOON CHUL-SIKAHN JEE-HWAN
    • LIM KWANG-JAEKIM SUNG-KYUNGYOON CHUL-SIKAHN JEE-HWAN
    • H04W28/20H04W74/08
    • H04W74/0866H04W28/20
    • A random access channel operating method in a mobile communication system is provided. The random access channel operating method includes: (a) selecting a transmission mode according to a load of a random access channel and performing transmission to a mobile terminal; (b) receiving a message having a format corresponding to the selected transmission mode from the mobile terminal; (c) determining whether or not a preamble or data is included in the message received in (b) receiving of the message; and (d) if the data is determined to be included in the (c) determining, transmitting a response message for data reception to the mobile terminal. Accordingly, use efficiency of a random access channel can be increased by measuring a system load of the random access channel in a base station and changing a transmission format of a burst transmitted through the random access channel according to the measured load level.
    • 提供了一种移动通信系统中的随机接入信道操作方法。 随机接入信道操作方法包括:(a)根据随机接入信道的负载选择发送模式,并向移动终端进行发送; (b)从所述移动终端接收具有与所选传输模式对应的格式的消息; (c)确定在(b)消息的接收中接收到的消息中是否包括前导码或数据; 以及(d)如果确定数据被包括在(c)确定中,向移动终端发送用于数据接收的响应消息。 因此,可以通过测量基站中的随机接入信道的系统负载并根据测量的负载水平改变通过随机接入信道发送的突发的发送格式,来增加随机接入信道的使用效率。