公开(公告)号：EP1024622A3

公开(公告)日：2006-02-08

申请号：EP00300356.3

申请日：2000-01-19

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Budka, Kenneth Carl ,  Nanda, Sanjiv ,  Schefczik, Hans-Peter

IPC: H04L1/00

CPC classification number: H04L1/0015 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0017

Abstract: In a wireless data network, such as a General Packet Radio Service (GPRS) network, a transmitter uses one of k coding/modulation schemes for transmitting data. The transmitter initially selects a coding/modulation scheme, C , as a function of carrier-to-interference ratio ( C / I ) measurements. The transmitter then calculates the number of blocks, B , required to transmit a number of data packets, D , using the coding/modulation scheme C . In addition, the transmitter calculates the number of blocks required to transmit the number of data packets, D , for each coding/modulation scheme that is stronger than the selected coding/modulation scheme C . The transmitter finally selects that coding/modulation scheme that results in transmitting the number of data packets D in B blocks using the strongest coding/modulation scheme. As a result, each block is transmitted using the strongest coding/modulation scheme available.

公开(公告)号：EP1009176A2

公开(公告)日：2000-06-14

申请号：EP99309583.5

申请日：1999-11-30

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Budka, Kenneth Carl ,  Chuah,Mooi Choo ,  Yue, On-Ching

IPC: H04Q7/24

CPC classification number: H04W8/082 ,  H04W36/12 ,  H04W80/04

Abstract: A route optimization technique in a GPRS network includes establishing a gateway GPRS support node in a visiting public land mobile network in which a roaming mobile station is currently located. Specifically, a tunnel is formed between the gateway GPRS support node and a serving GPRS support node to which the mobile station is in direct communication over a radio link. In this manner, external corresponding hosts may route packets to the gateway GPRS support node, rather than the GPRS support node in the mobile station's home public mobile network, as is done in conventional GPRS networks. Advantageously, a shorter path is established for transfer of packets between a mobile station and a corresponding host. A similar route optimization technique is provided in a CDPD network, wherein a home mobile data-intermediate system node (local HMD-IS) in the foreign (visiting) network serves as a gateway node to the roaming mobile-end system.

Abstract translation: GPRS网络中的路由优化技术包括在漫游移动台当前所在的访问公共陆地移动网络中建立网关GPRS支持节点。 具体地，在网关GPRS支持节点和移动台通过无线电链路直接通信的服务GPRS支持节点之间形成隧道。 以这种方式，外部对应主机可以将分组路由到网关GPRS支持节点，而不是在移动台的归属公共移动网络中的GPRS支持节点，如在传统的GPRS网络中那样。 有利的是，为移动台和相应主机之间的分组传输建立较短的路径。 在CDPD网络中提供了类似的路由优化技术，其中外部（访问）网络中的归属移动数据中间系统节点（本地HMD-IS）充当漫游移动终端系统的网关节点。

公开(公告)号：EP1024622A2

公开(公告)日：2000-08-02

申请号：EP00300356.3

申请日：2000-01-19

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Budka, Kenneth Carl ,  Nanda, Sanjiv ,  Schefczik, Hans-Peter

IPC: H04L1/00

CPC classification number: H04L1/0015 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0017

Abstract: In a wireless data network, such as a General Packet Radio Service (GPRS) network, a transmitter uses one of k coding/modulation schemes for transmitting data. The transmitter initially selects a coding/modulation scheme, C , as a function of carrier-to-interference ratio ( C/I ) measurements. The transmitter then calculates the number of blocks, B , required to transmit a number of data packets, D , using the coding/modulation scheme C . In addition, the transmitter calculates the number of blocks required to transmit the number of data packets, D , for each coding/modulation scheme that is stronger than the selected coding/modulation scheme C . The transmitter finally selects that coding/modulation scheme that results in transmitting the number of data packets D in B blocks using the strongest coding/modulation scheme. As a result, each block is transmitted using the strongest coding/modulation scheme available.

Abstract translation: 在诸如通用分组无线业务（GPRS）网络的无线数据网络中，发射机使用k个编码/调制方案之一来发送数据。 发射机最初选择编码/调制方案C作为载波干扰比（C / I）测量的函数。 然后，发射机使用编码/调制方案C来计算发送多个数据分组D所需的块数B。 此外，发射机对于比选择的编码/调制方案C更强的每个编码/调制方案，计算发送数据分组数目D所需的块数。 发射机最终选择使用最强编码/调制方案在B块中发送数据分组数目D的编码/调制方案。 结果，使用可用的最强编码/调制方案来发送每个块。

公开(公告)号：EP1009176A3

公开(公告)日：2000-12-06

申请号：EP99309583.5

申请日：1999-11-30

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Budka, Kenneth Carl ,  Chuah,Mooi Choo ,  Yue, On-Ching

IPC: H04Q7/24

CPC classification number: H04W8/082 ,  H04W36/12 ,  H04W80/04

Abstract: A route optimization technique in a GPRS network includes establishing a gateway GPRS support node in a visiting public land mobile network in which a roaming mobile station is currently located. Specifically, a tunnel is formed between the gateway GPRS support node and a serving GPRS support node to which the mobile station is in direct communication over a radio link. In this manner, external corresponding hosts may route packets to the gateway GPRS support node, rather than the GPRS support node in the mobile station's home public mobile network, as is done in conventional GPRS networks. Advantageously, a shorter path is established for transfer of packets between a mobile station and a corresponding host. A similar route optimization technique is provided in a CDPD network, wherein a home mobile data-intermediate system node (local HMD-IS) in the foreign (visiting) network serves as a gateway node to the roaming mobile-end system.