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    • 4. 发明授权
    • Mobile station migration from D-AMPS packet system to edge/GPRS packet system in an integrated wireless network
    • 移动台在集成无线网络中从D-AMPS分组系统迁移到边缘/ GPRS分组系统
    • US06452940B1
    • 2002-09-17
    • US09282434
    • 1999-03-31
    • Marlene YaredSara MazurJan Lindskog
    • Marlene YaredSara MazurJan Lindskog
    • H04J316
    • H04W36/0077
    • The present invention describes a method of migrating a mobile station, operating within an integrated D-AMPS/EDGE wireless telecommunication network, from the D-AMPS packet portion of the network to the EDGE/GPRS packet portion of the network. The technique includes accessing the control channels of both the D-AMPS and EDGE networks in order to obtain the necessary timing advance and packet transfer identifier for use with the GPRS packet system. In an embodiment of the invention, the MS makes a first access on a D-AMPS control channel to obtain a pointer to a reserved radio block on an EDGE packet control channel. The MS makes a second access on the EDGE control channel as specified by the reserved radio block which contains a particular frequency and timeslot location. The MS then sends a series of shortened bursts to the network such that a Timing Advance Index (TAI) value is calculated from the bursts and sent back to the MS. A packet data channel (PDCH) is assigned by the network and sent to the MS to perform the packet data transfer using the estimated TAI and assigned TFI.
    • 本发明描述了在集成的D-AMPS / EDGE无线电信网络内将移动台从网络的D-AMPS分组部分迁移到网络的EDGE / GPRS分组部分的方法。 该技术包括访问D-AMPS和EDGE网络的控制信道,以获得用于GPRS分组系统的必要的定时提前和分组传送标识符。 在本发明的一个实施例中,MS在D-AMPS控制信道上进行第一次接入以获得指向EDGE分组控制信道上的预留无线电块的指针。 MS在由包含特定频率和时隙位置的保留无线电块指定的EDGE控制信道上进行第二次接入。 然后,MS向网络发送一系列缩短的突发,使得从脉冲串计算定时提前索引(TAI)值并发送回MS。 分组数据信道(PDCH)由网络分配并发送到MS,以使用估计的TAI和分配的TFI来执行分组数据传输。