
基本信息:
- 专利标题: Memory management for a digital subscriber line telecommunication device
- 专利标题(中):Speicherverwaltungfüreine DSLTelekommunikationsgerät
- 申请号:EP03290322.1 申请日:2003-02-10
- 公开(公告)号:EP1445929A1 公开(公告)日:2004-08-11
- 发明人: Van Hoogenbemt, Stefaan Margriet Albert
- 申请人: ALCATEL
- 申请人地址: 54, rue la Boétie 75008 Paris FR
- 专利权人: ALCATEL
- 当前专利权人: ALCATEL
- 当前专利权人地址: 54, rue la Boétie 75008 Paris FR
- 代理机构: Plas, Axel
- 主分类号: H04M11/06
- IPC分类号: H04M11/06 ; H04L27/26
摘要:
A Digital Subscriber Line [DSL] telecommunication device comprising at least one common memory (CM) that is shared between circuits (FFT, Demapper) of the downstream path and corresponding circuits (Mapper, IFFT) of the upstream path. The shared or common memory (CM) advantageously replaces the known two distinct memories (DM, UM) generally used, one for the downstream path and the other for the upstream path. The single common memory (CM) is particularly adapted to Very High Speed Digital Subscriber Line [VDSL-, VDSL or VDSL+] devices where the two downstream frequency ranges (DF1, DF2) are separated by an upstream frequency range (UF1); and where a second upstream frequency range (UF2) may exist. The size of the common memory shared by the fourth circuits is slightly larger (2800 carriers of 16 bits) than one (2048 carriers of 16 bits) of the known two memories interfacing each only two circuits of a same path. However, the size of this common memory is smaller than the sum (2 x 2048 carriers of 16 bits) of these two distinct memories.
摘要(中):
数字用户线路ÄDSLÜ电信设备包括在下游路径的电路(FFT,解映射器)和上游路径的对应电路(Mapper,IFFT)之间共享的至少一个公共存储器(CM)。 共享或公共存储器(CM)有利地替代通常使用的已知的两个不同存储器(DM,UM),一个用于下游路径,另一个用于上行路径。 单个公共存储器(CM)特别适用于两个下行频率范围(DF1,DF2)被上游频率范围(UF1)隔开的超高速数字用户线路ÄVDSL-,VDSL或VDSL +Ü设备; 并且其中可存在第二上游频率范围(UF2)。 所述第四电路共享的共用存储器的大小比已经连接到相同路径中的每个只有两个电路的已知两个存储器的一个(2048个16位载波)略大(28位的16位载波)。 然而,这个公共存储器的大小小于这两个不同存储器的总和(2×2048个载波的16位)。
IPC结构图谱:
H | 电学 |
--H04 | 电通信技术 |
----H04M | 电话通信 |
------H04M11/00 | 适于与其他电系统组合的电话通信系统 |
--------H04M11/06 | .在同一线路上同时传输话音和电报或其他数据 |