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公开(公告)号：CA2287786C
公开(公告)日：2004-05-18
申请号：CA2287786
申请日：1999-10-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RAMJEE RAMACHANDRAN , THUEL SANDRA R , LA PORTA THOMAS F , MURAKAMI KAZUTAKA , VARADHAN KANNAN
IPC: H04B7/26 , H04L12/56 , H04L29/06 , H04L29/12 , H04W40/24 , H04W40/28 , H04W40/36 , H04W80/04 , H04W88/00 , H04Q7/38 , H04L12/12
Abstract: Domains are defined to incorporate a subnet including a plurality of ba se stations and routers. Base stations are used by mobile devices to attach to the wired portion of a packet-based network, such as the Internet, and exchange packets thereover with a correspondent node. Local mobility between domain base stations is provided by including and updating routing table entries at domain routers and base stations for forwarding packets having a mobile device's address as a destination address to the mobile device. Packets are delivered to the mobile device regardless of the domain base station to whic h the mobile device is attached. When a mobile device is attached to a base station included within a foreign domain, a care~of address is assigned, and packets are tunneled for delivery of packets to the mobile device. Only one care-of address is required per mobile device per foreign domain. Routing table entries used for packet delivery are updated on a purely local subnet basis within domains, whether home domain or foreign domain, making handoffs between base stations substantially transparent to the home agent and the correspondent node.
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公开(公告)号：DE60125266T2
公开(公告)日：2007-06-14
申请号：DE60125266
申请日：2001-03-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： LA PORTA THOMAS F , RAMJEE RAMACHANDRAN , SALGARELLI LUCA , THUEL SANDRA R , VARADHAN KANNAN
Abstract: Portable and/or mobile IP hosts desiring to connect to the Internet can dynamically acquire a home address and other configuration information through DHCP when powering up in a foreign network. A two-stage configuration procedure is used. First, the mobile host uses the M-IP protocol to establish contact with an addressing element, referred to as a bootstrapping agent, that is usually co-located with a M-IP Home Agent, and that allocates a temporary home address for the mobile host. The temporary address is used to create a temporary tunnel. Second, this temporary tunnel is used as the communication vehicle over which standard DHCP transactions take place. The present invention is thus arranged to use a) M-IP as the signaling mechanism for reaching the home network and dynamically allocating a temporary home address for the mobile host; and b) DHCP to allocate a permanent home address and any other configuration state for the mobile host.
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公开(公告)号：CA2337704C
公开(公告)日：2005-05-10
申请号：CA2337704
申请日：2001-02-22
Applicant: LUCENT TECHNOLOGIES INC
Inventor： SALGARELLI LUCA , THUEL SANDRA R , VARADHAN KANNAN , RAMJEE RAMACHANDRAN , LA PORTA THOMAS F
Abstract: Portable and/or mobile IP hosts desiring to connect to the Internet can dynamically acquire a home address and other configuration information throu gh DHCP when powering up in a foreign network. A two-stage configuration procedure is used. First, the mobile host uses the M-IP protocol to establis h contact with an addressing element, referred to as a bootstrapping agent, that is usually co- located with a M-IP Home Agent, and that allocates a temporary home address for the mobile host. The temporary address is used to create a temporary tunnel. Second, this temporary tunnel is used as the communication vehicle over whi ch standard DHCP transactions take place. The present invention is thus arrange d to use a) M-IP as the signaling mechanism for reaching the home network and dynamically allocating a temporary home address for the mobile host; and b) DHCP to allocate a permanent home address and any other configuration state for t he mobile host.
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公开(公告)号：CA2288056A1
公开(公告)日：2000-06-11
申请号：CA2288056
申请日：1999-10-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： VARADHAN KANNAN , THUEL SANDRA R , LA PORTA THOMAS F , MURAKAMI KAZUTAKA , RAMJEE RAMACHANDRAN
Abstract: Local mobility within a subnet is supported by classifying wireless base stations, and the routers. used to forward packets to those base stations, within defined domains. Domains are defined to incorporate a subnet having a plurality of base stations. Base stations are used by mobile devices to attach to the wired portion of a packet-based network, such as the Internet, and exchange packets thereover with a correspondent node. Packets sent from the correspondent node to the mobile device have a packet destination address corresponding to the mobile device. The mobile device retains this address for the duration of time it is powered up and attached to the Internet via any base station within a given domain. Host-based routing is utilized to update routing table entries corresponding to the mobile device at routers incorporated within a single domain. The routing table entries are established and updated via path setup schemes to convey packets destined for the mobile device along the proper established path through the domain routers and base stations, regardless of the domain base station through which the mobile device is attached. Path setup schemes utilize power up, refresh, and handoff path setup messages to maintain the proper relationship between router interfaces and packet addresses for routing table entries.
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Patent Agency Ranking
公开(公告)号：CA2287688A1
公开(公告)日：2000-06-11
申请号：CA2287688
申请日：1999-10-28
Applicant: LUCENT TECHNOLOGIES INC
Inventor： LA PORTA THOMAS F , RAMJEE RAMACHANDRAN , THUEL SANDRA R , VARADHAN KANNAN , MURAKAMI KAZUTAKA
Abstract: Local mobility within a subnet is supported by classifying wireless base stations, and the routers used to forward packets to those base stations, within defined domains. Domains are defined to incorporate a subnet having a plurality of base stations. Base stations are used by mobile devices to attach to the wired portion of a packet-based network, such as the Internet, and exchange packets thereover with a correspondent node. Packets sent from the correspondent node to the mobile device have a packet destination address corresponding to the mobile device. The mobile device retains this address for the duration of time it is powered up and attached to the Internet via any base station within a given domain. Host-based routing is utilized to update routing table entries corresponding to the mobile device at routers incorporated within a single domain. The routing table entries are established and updated via path setup schemes to convey packets destined for the mobile device along the proper established path through the domain routers and base stations, regardless of the domain base station through which the mobile device is attached. Path setup schemes utilize power up, refresh, and handoff path setup messages to maintain the proper relationship between router interfaces and packet addresses for routing table entries.
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公开(公告)号：DE602005012886D1
公开(公告)日：2009-04-09
申请号：DE602005012886
申请日：2005-03-15
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHAN MUN-CHOON , HAVEMANN MARTIN , RAMJEE RAMACHANDRAN , THUEL SANDRA R , WOO THOMAS Y
Abstract: A base station controller (BSC) of a radio or wireless telecommunications network base station includes a director. A BSC includes multiple central processing units (CPUs), with each CPU running a call-processing application for one or more connections. The director is a logical entity that intercepts wireless call-setup signaling and assigns each corresponding connection to a CPU according to a centralized load-balancing algorithm. The centralized load-balancing algorithm distributes connections to less loaded CPUs to i) prevent individual CPUs from overloading, ii) utilize otherwise unused system resources, and iii) increase overall system performance. The director hosts cell components that manage code division multiple access (CDMA) downlink spreading codes for a base station, providing centralized allocation of spreading codes by the base station.
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公开(公告)号：CA2337704A1
公开(公告)日：2001-09-30
申请号：CA2337704
申请日：2001-02-22
Applicant: LUCENT TECHNOLOGIES INC
Inventor： THUEL SANDRA R , VARADHAN KANNAN , SALGARELLI LUCA , LA PORTA THOMAS F , RAMJEE RAMACHANDRAN
Abstract: Portable and/or mobile IP hosts desiring to connect to the Internet can dynamically acquire a home address and other configuration information throu gh DHCP when powering up in a foreign network. A two-stage configuration procedure is used. First, the mobile host uses the M-IP protocol to establis h contact with an addressing element, referred to as a bootstrapping agent, that is usually co- located with a M-IP Home Agent, and that allocates a temporary home address for the mobile host. The temporary address is used to create a temporary tunnel. Second, this temporary tunnel is used as the communication vehicle over whi ch standard DHCP transactions take place. The present invention is thus arrange d to use a) M-IP as the signaling mechanism for reaching the home network and dynamically allocating a temporary home address for the mobile host; and b) DHCP to allocate a permanent home address and any other configuration state for t he mobile host.
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公开(公告)号：DE60125266D1
公开(公告)日：2007-02-01
申请号：DE60125266
申请日：2001-03-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： LA PORTA THOMAS F , RAMJEE RAMACHANDRAN , SALGARELLI LUCA , THUEL SANDRA R , VARADHAN KANNAN
Abstract: Portable and/or mobile IP hosts desiring to connect to the Internet can dynamically acquire a home address and other configuration information through DHCP when powering up in a foreign network. A two-stage configuration procedure is used. First, the mobile host uses the M-IP protocol to establish contact with an addressing element, referred to as a bootstrapping agent, that is usually co-located with a M-IP Home Agent, and that allocates a temporary home address for the mobile host. The temporary address is used to create a temporary tunnel. Second, this temporary tunnel is used as the communication vehicle over which standard DHCP transactions take place. The present invention is thus arranged to use a) M-IP as the signaling mechanism for reaching the home network and dynamically allocating a temporary home address for the mobile host; and b) DHCP to allocate a permanent home address and any other configuration state for the mobile host.
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公开(公告)号：CA2287786A1
公开(公告)日：2000-06-11
申请号：CA2287786
申请日：1999-10-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： VARADHAN KANNAN , RAMJEE RAMACHANDRAN , MURAKAMI KAZUTAKA , LA PORTA THOMAS F , THUEL SANDRA R
IPC: H04B7/26 , H04L12/56 , H04L29/06 , H04L29/12 , H04W40/24 , H04W40/28 , H04W40/36 , H04W80/04 , H04W88/00 , H04Q7/38 , H04L12/12
Abstract: Domains are defined to incorporate a subnet including a plurality of base stations and routers. Base stations are used by mobile devices to attach to the wired portion of a packet-based network, such as the Internet, and exchange packets thereover with a correspondent node. Local mobility between domain base stations is provided by including and updating routing table entries at domain routers and base stations for forwarding packets having a mobile device's address as a destination address to the mobile device. Packets are delivered to the mobile device regardless of the domain base station to which the mobile device is attached. When a mobile device is attached to a base station included within a foreign domain, a care-of address is assigned, and packets are tunneled for delivery of packets to the mobile device. Only one care-of address is required per mobile device per foreign domain. Routing table entries used for packet delivery are updated on a purely local subnet basis within domains, whether home domain or foreign domain, making handoffs between base stations substantially transparent to the home agent and the correspondent node.
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