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CONTROLLER FOR GSM AND 3G BASE TRANSCEIVER STATIONS IN A GSM CORE NETWORK WITH EXTERNAL HANDOVER POSSIBILITY FR0M 3G CELLS TO GSM CELLS, TRASPARENT TO GSM CORE NETWORK
CONTROLLER FOR GSM AND 3G BASE TRANSCEIVER STATIONS IN A GSM CORE NETWORK WITH EXTERNAL HANDOVER POSSIBILITY FR0M 3G CELLS TO GSM CELLS, TRASPARENT TO GSM CORE NETWORK
A station controller (M-BSC) is connected to base transceiver stations BTS of the GSM (Global System for Mobile), or DCS (Digital Cellular System) mobile transceiver system, and to BTSC base transceiver stations of the TD-SCDMA (Time Division Synchronous Code Division Multiple Access) system through code division transceiver access technology, typical of 3G systems, and TDD duplexing. The controller is connected to a MSC circuit switch of GSM type. The new 3G technology shares the GSM core network, which on the contrary ignores the existence of the latter. Transparency of the 3G new technology towards the core network is achieved inhibiting any handover from GSM cells to BTSC cells and enabling the external handover (through MSC intervention) from BTSC cells to GSM cells after appropriate treatment of information to be sent to MSC. The ad hoc procedure is carried out by the station controller and consists in reprocessing the mixed list (2G and 3G) of cells candidate for handover furnished with by BTSC, to obtain two lists of cells differing as to radio technology, selecting a list to be forwarded to MSC according to service qualification criteria, comparing in a local memory the (MS/UE) mobile classmarks owned by MSC with those associated to the selected list and, in case of inconsistency, updating MSC classmarks prior to the forwarding of the selected list.
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机译:站控制器(M-BSC)连接到GSM(全球移动系统)的基站收发器BTS或DCS(数字蜂窝系统)移动收发器系统,并连接到TD-SCDMA(时分)的BTSC基站收发器通过3G系统中典型的码分收发器访问技术实现的同步码分多址)系统,以及TDD双工。控制器连接到GSM类型的MSC电路开关。新的3G技术共享GSM核心网,而GSM核心网则忽略了后者的存在。实现了3G新技术对核心网络的透明性,从而抑制了从GSM小区到BTSC小区的任何切换,并在对信息发送到MSC进行适当处理之后,实现了从BTSC小区到GSM小区的外部切换(通过MSC干预)。 ad hoc程序由站控制器执行,包括对由BTSC提供的用于切换的候选小区的混合列表(2G和3G)进行重新处理,以获得两个与无线电技术不同的小区列表,选择一个要根据服务资格标准转发给MSC,在本地内存中比较MSC拥有的(MS / UE)移动类别标记和与所选列表相关联的那些移动类别标记,并且在不一致的情况下,在转发所选列表之前更新MSC分类标记。
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