公开(公告)号：DE60109269D1

公开(公告)日：2005-04-14

申请号：DE60109269

申请日：2001-08-07

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHUAH MOOI CHOO

IPC: H04M3/00 ,  H04B7/26 ,  H04L12/56 ,  H04M11/00 ,  H04W28/24 ,  H04W92/02 ,  H04W92/06 ,  H04W92/24 ,  H04L12/28

Abstract: A UMTS (Universal Mobile Telecommunications System) core network supports the negotiation of variable quality of service (QoS). A QoS information element (IE) is defined that supports downgradeable QoS requirements by allowing multiple traffic classes to be specified in a priority order. Similarly, a QoS information element (IE) is defined that supports upgradeable QoS requirements.

公开(公告)号：DE69916963D1

公开(公告)日：2004-06-09

申请号：DE69916963

申请日：1999-10-05

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHUAH MOOI CHOO ,  YUE ON-CHING MIDDLETOWN ,  ZHANG QINQING

IPC: H04L29/06 ,  H04B1/69 ,  H04L12/28 ,  H04L12/56 ,  H04W74/08 ,  H04Q7/32

Abstract: The present invention provides methods and apparatus for providing access priority in a MAC protocol of a communications system such as, for example, with respect to UMTS RACH. Particularly, the invention introduces several access priority methodologies including: (i) random chip delay access priority (RCDAP); (ii) random backoff based access priority (RBBAP); (iii) variable logical channel based access priority (VLCAP); (iv) UMTS-specific variable logical channel based access priority (VLCAP'); (v) probability based access priority (PBAP); and (vi) retransmission based access priority (REBAP). Each methodology associates some parameter or parameters to access priority classes in order to influence the likelihood of a remote terminal completing a successful access request to a base station.

公开(公告)号：DE69813135D1

公开(公告)日：2003-05-15

申请号：DE69813135

申请日：1998-10-13

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHUAH MOOI CHOO

IPC: H04J4/00 ,  H04B7/005 ,  H04B7/26 ,  H04L12/26 ,  H04L12/28 ,  H04L12/56 ,  H04W36/16 ,  H04W52/10 ,  H04W52/50 ,  H04W88/08 ,  H04W92/10 ,  H04B1/707

Abstract: The power level for uplink data transmission in a wireless communications network utilizing an on-demand multiple access method with a fair queuing service discipline (ODMAFQ) for efficient utilization of the limited bandwidth available in the wireless network is established during the initial access request message. The power level in a wireless network having a base station and several remote hosts is established by first transmitting a short connection request message to the base station from one of the remote hosts at an initial power level that is set relative to the nominal open loop power level. If the first remote host's transmission is unsuccessful, the power level is incremented by a power increment amount that may be predetermined, and the steps of transmitting and incrementing are repeated until the transmission from remote host to base station is successful. Finally, the power level at which transmission is successful is stored and used for further data transmission between that particular remote host and the wireless network base station.

公开(公告)号：CA2366275A1

公开(公告)日：2002-07-18

申请号：CA2366275

申请日：2001-12-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHUAH MOOI CHOO

IPC: H04M3/00 ,  H04B7/26 ,  H04L12/56 ,  H04M11/00 ,  H04W28/24 ,  H04W92/02 ,  H04W92/06 ,  H04W92/24 ,  H04Q7/38 ,  H04L29/06 ,  H04L12/12

Abstract: A UMTS (Universal Mobile Telecommunications System) core network supports the negotiation of variable quality of service (QoS). A QoS information element (IE) is defined that supports downgradeable QoS requirements by allowing multiple traffic classes to be specified in a priority order. Similarly, a Q oS information element (IE) is defined that supports upgradeable QoS requirements.

公开(公告)号：CA2365549A1

公开(公告)日：2002-07-18

申请号：CA2365549

申请日：2001-12-18

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHUAH MOOI CHOO

IPC: H04M3/00 ,  H04L12/56 ,  H04L29/06 ,  H04L29/08 ,  H04M11/00 ,  H04W28/24 ,  H04W84/04 ,  H04Q7/38 ,  H04L12/12 ,  H04Q3/70

Abstract: A UMTS (Universal Mobile Telecommunications System) core network supports the negotiation of asymmetric traffic classes with a mobile station (MS) (or user equipment (UE)). A new quality of service (QoS) information element (IE ) is defined that allows for the MS to negotiate for asymmetric traffic classes.

公开(公告)号：CA2287049A1

公开(公告)日：2000-06-02

申请号：CA2287049

申请日：1999-10-21

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ZHANG QINQING ,  YUE ON-CHING ,  CHUAH MOOI CHOO

IPC: H04B1/40 ,  H04B1/04 ,  H04B1/16 ,  H04B7/005 ,  H04B7/26 ,  H04W52/00 ,  H04W52/36 ,  H04W52/50 ,  H04B1/18 ,  H04Q7/36

Abstract: The present invention provides a method for use in a UMTS receiver of detecting a signal transmitted by a UMTS transmitter which includes determining whether the signal is greater than or equal to at least a first power threshold value when the signal is below an initial detection threshold value, and informing the transmitter when the signal is greater than or equal to the first power threshold value such that the transmitter can increase a signal strength of the signal by a first predetermined amount and re-transmit. In another aspect of the invention, a method for use in a UMTS transmitter of power ramping a signal transmitted by the transmitter and received by a UMTS receiver includes increasing a signal strength of the signal by a first predetermined amount when informed by the receiver that the signal is greater than or equal to a first power threshold value but below an initial detection threshold value, and re-transmitting the signal.

公开(公告)号：CA2281456A1

公开(公告)日：2000-04-14

申请号：CA2281456

申请日：1999-09-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ZHANG QINQING ,  CHUAH MOOI CHOO ,  YUE ON-CHING

IPC: H04L29/06 ,  H04B1/69 ,  H04L12/28 ,  H04L12/56 ,  H04W74/08 ,  H04Q7/38

Abstract: The present invention provides methods and apparatus for providing access priority in a MAC protocol of a communications system such as, for example, with respect to UMTS RACH. Particularly, the invention introduces several access priority methodologies including: (i) random chip delay access priority (RCDAP); (ii) random backoff based access priority (RBBAP); (iii) variable logical channel based access priority (VLCAP); (iv) UMTS-specific variable logical channel based access priority (VLCAP'); (v) probability based access priority (PBAP); and (vi) retransmission based access priority (REBAP). Each methodology associates some parameter or parameters to access priority classes in order to influence the likelihood of a remote terminal completing a successful access request to a base station.

公开(公告)号：CA2281454A1

公开(公告)日：2000-04-14

申请号：CA2281454

申请日：1999-09-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHUAH MOOI CHOO ,  YUE ON-CHING ,  ZHANG QINQING

IPC: H04L29/08 ,  H04B1/707 ,  H04B7/26 ,  H04L12/28 ,  H04L12/56 ,  H04W74/08 ,  H04Q7/38

Abstract: The present invention provides methods and apparatus for providing access priority in a MAC protocol of a communications system such as, for example, with respect to UMTS RACH. Particularly, the invention introduces several access priority methodologies including: (i) random chip delay access priority (RCDAP); (ii) random backoff based access priority (RBBAP); (iii) variable logical channel based access priority (VLCAP); (iv) UMTS-specific variable logical channel based access priority (VLCAP'); (v) probability based access priority (PBAP); and (vi) retransmission based access priority (REBAP). Each methodology associates some parameter or parameters to access priority classes in order to influence the likelihood of a remote terminal completing a successful access request to a base station.

公开(公告)号：CA2249865A1

公开(公告)日：1999-04-14

申请号：CA2249865

申请日：1998-10-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHUAH MOOI CHOO

IPC: H04J1/00 ,  H04B7/005 ,  H04J3/00 ,  H04J3/16 ,  H04L12/28 ,  H04L12/56 ,  H04L69/14 ,  H04W4/06 ,  H04W8/24 ,  H04W28/04 ,  H04W28/14 ,  H04W48/10 ,  H04W52/10 ,  H04W52/50 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04 ,  H04W88/08 ,  H04Q7/36

Abstract: A method for data transmission in a wireless communication network utilizes an on-demand multiple access method with a fair queuing service discipline for efficient utilization of the limited bandwidth available in the network by shari ng bandwidth among the remote hosts. In one embodiment, the base station broadcasts the system virtual time and the assigned shares of service classes to each of th e wireless a Each remote host computes its own service tag and reports it to the base station, which assigns transmit permits based on the service tag values and the available data slots. If a packet is lost or in error, the sending remote recomp utes the service tag values of all its queued packets, including the packet whose transmi ssion failed. Alternatively, the remote informs the base station of its queue size and the base station computes service tags for each remote based on the service shares o f the remote and the available data slots. If a packet is lost or in error, the base s tation recomputes the service tag values for that remote host based on the current syst em virtual time. In an alternate embodiment, the a or wireless node maintains a pac ket queue and a head-of-line tag. If a packet is lost, only the head-of-line tag nee ds to be changed. Once the head-of-line packet has been transmitted successfully, the res t of the queued packets will automatically receive the correct tag, the recomputed he ad-of-line tag plus appropriate increments. For half-duplex, both the uplink and downlink queues at the access points are managed as if there is only one system virtual t ime. For full-duplex, separate system virtual times for the uplink and the downlink t raffic may be used. Remotes may also be divided into one or more separate groups, with each group having a different priority and receiving a different system virtual time. Service tags of all other remotes remain unaffected by the retransmission of a p acket from any particular remote, meaning that the QoS experienced by the other remote s does not suffer.

公开(公告)号：DE69840955D1

公开(公告)日：2009-08-20

申请号：DE69840955

申请日：1998-10-13

Applicant: LUCENT TECHNOLOGIES INC

Inventor： RAI GIRISH ,  CHUAH MOOI CHOO ,  PARSONS PHILIP M

IPC: H04L29/06 ,  H04M3/42 ,  H04L12/14 ,  H04L12/28 ,  H04L12/46 ,  H04L12/56 ,  H04L12/66 ,  H04W4/24 ,  H04W8/12 ,  H04W36/14 ,  H04W80/04 ,  H04W88/18

Abstract: A coupled data network with a system for registering end systems is disclosed. A foreign network includes a foreign mobile switching center and a foreign base station. The foreign mobile switching center includes a serving registration server, the foreign base station includes a foreign access hub, and the foreign access hub includes a proxy registration agent. A home network includes a home mobile switching center with a home registration server. A first end system subscribes to the home network and operates within the foreign network. The end system includes an end registration agent, the end registration agent being coupled to the proxy registration agent, the proxy registration agent being coupled to the serving registration server, and the serving registration server being coupled to the home registration server.