Patents by Inventor Chung-Ching Wang

Chung-Ching Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20050041597
    Abstract: A communication network includes a base station in radio frequency communication with a mobile station. In order to regulate packet data messaging by the mobile station, the base station transmits a message over-the-air to the mobile station. The message indicates that the mobile station is to delay transmitting packet data messages and a duration of delay. In response to receipt of the message from the base station, the mobile station delays over-the-air transmission of packet data messages (e.g., Data Burst Messages) in accordance with the indicated duration.
    Type: Application
    Filed: July 30, 2004
    Publication date: February 24, 2005
    Applicant: Nortel Networks Limited
    Inventors: Chung-Ching Wang, Ke-Chi Jang
  • Publication number: 20050036446
    Abstract: A communication network includes first and second network entities capable of over-the-air communication. The second network entity receives at least one message communicated over-the-air by the first network entity. The message includes one or more message fields indicating a number of concurrent over-the-air service instances with the second network entity supported by the first network entity. The second network entity limits a number of concurrent over-the-air service instances requested by the second network entity in accordance with the one or more message fields in the message.
    Type: Application
    Filed: June 29, 2004
    Publication date: February 17, 2005
    Applicant: Nortel Networks Limited
    Inventors: Ke-Chi Jang, Chung-Ching Wang
  • Publication number: 20050036463
    Abstract: The present invention provides for reactivating a plurality of dormant packet data services instances. A mobile station user desires to activate at least one dormant packet data service instance. A service negotiation is initiated between the mobile station data and the wireless support network supporting the mobile station; which includes sending from the mobile station to identify all of the dormant service instances desired to be activated.
    Type: Application
    Filed: August 13, 2004
    Publication date: February 17, 2005
    Applicant: Nortel Networks Limited
    Inventors: Sanket Nesargi, Azeem Ahmad, Mini Vasudevan, Chung-Ching Wang, Guy Helm, Ke-Chi Jang
  • Publication number: 20050007973
    Abstract: The present invention supports a message protocol on a wireless communication network to setup a shortened slot cycle operation for a mobile station. During wireless, packet-based communication, a mobile station can utilize a shortened slot cycle to increase the frequency a communication channel is monitored by a mobile station while in idle state. While this is advantageous to communication requiring a fast response, it increases power consumption and decreases battery charge time. Under present usage, the shortened slot cycle must be used by all mobile stations connected to the base transceiver whether required or not. To increase efficiency and avoid unnecessary power consumption, the invention allows only those mobile stations that require it to implement the shortened slot cycle. Signaling messages sent from the mobile station to the base station controller will initiate a shortened slot cycle only for that mobile station.
    Type: Application
    Filed: June 25, 2004
    Publication date: January 13, 2005
    Inventors: Ke-Chi Jang, Chung-Ching Wang
  • Publication number: 20040180655
    Abstract: In a wireless communications network, a method of performing a location service with respect to a mobile station includes communicating a paging message containing an indication of whether the paging message is related to at least one of an emergency-related location service and a law enforcement-related location service. In another aspect, a mobile station in a wireless communications network communicates messaging to move the mobile station to a traffic channel in response to a callback by at least one of an emergency services entity and a law enforcement entity. The mobile station also receives a location request on the traffic channel, the location request containing an indication of whether the location request is related to at least one of an emergency-related location service and a law enforcement-related location service.
    Type: Application
    Filed: March 12, 2004
    Publication date: September 16, 2004
    Inventors: Ke-Chi Jang, Robert E. Denman, Chung-Ching Wang
  • Publication number: 20040179490
    Abstract: An apparatus, a method, and a computer program are provided for increasing the efficiency of Radio Frequency (RF) resources. Specifically, a modified Resource Release Request Message (RRRM) is utilized. The modified RRRM incorporates several additional fields that allow for the release of multiple service instances at approximately the same time. The simultaneous or near simultaneous release of multiple service instance is more efficient that the traditional RRRM for the release of a single service instance. Therefore, limited RF resources can be better preserved.
    Type: Application
    Filed: March 8, 2004
    Publication date: September 16, 2004
    Applicant: Nortel Networks Limited
    Inventors: Ke-Chi Jang, Chung-Ching Wang
  • Publication number: 20040179492
    Abstract: In code division multiple access communication systems, there are three levels for updating locations of dormant mobile stations (MSs) and setting up fast call. In sector and are levels, the dormant MS send a layer 2 message containing a message type and MS identifier to a base transceiver station (BTS). Since the message is associated with the sector where the MS is located, the network is aware of the MS's location from the updated location. The dormant MS sends to the BTS a reconnect message containing a message type and an MS identifier. The MS's dormant to active state transition is initiated by the MS. In the communication network, sub-packet zone ID is broadcasted in the overhead message. The MS reports its location change on R-CSCH and the network with the BSC level control can page the MS within the zone where the MS sends the report.
    Type: Application
    Filed: January 7, 2004
    Publication date: September 16, 2004
    Inventors: Hang Zhang, Mo-Han Fong, Ke-Chi Jang, Jun Li, Xixian Chen, Chung-Ching Wang, Geng Wu, James Weisert
  • Publication number: 20040162052
    Abstract: A computer data signal including a plurality of wireless mobile device native capability data and a status indicator of a non-emergency-services position-determination (NESPD) capability. The NESPD capability is user-selectable.
    Type: Application
    Filed: February 9, 2004
    Publication date: August 19, 2004
    Applicant: Nortel Networks Limited
    Inventors: Ke-Chi Jang, Robert E. Denman, Chung-Ching Wang
  • Patent number: 6765909
    Abstract: A classification application utilizing a table of connection numbers and associated TCP/IP applications is utilized for determining a wireless packet communication, quality of service level by decoding a connection number field of the compressed packet header. Packets carrying different connection numbers can be mapped to different Quality of Service planes. When a non-active TCP connection becomes active, the classification application detects and identifies the connection by reading the connection number field of a compressed TCP/IP header in a packet of the application. The classification application applies the appropriate Quality of Service level as determined from a user database and a list of available Quality of Service levels. If the connection has no table entry, the TCP/IP application is identified based on comparison to a pre-loaded table of port numbers and a new entry is created in the connection number table.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: July 20, 2004
    Assignee: Nortel Networks Limited
    Inventors: Sanjoy Sen, Serge Manning, Chung-Ching Wang
  • Patent number: 6728365
    Abstract: The invention provides methods and systems for extending RSVP signaling to wireless networks. RSVP messages may be intercepted by an RSVP daemon, adjusted as necessary to accommodate the wireless network, and then forwarded on as RSVP messages either on a traffic channel or as a short data burst. Alternatively, the RSVP messages may be encapsulated in layer 3 messages. Alternatively, RSVP messages may be intercepted by another component, such as a PDSN, which then coordinates the establishment of the requested wireless connection.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: April 27, 2004
    Assignee: Nortel Networks Limited
    Inventors: Xiao-Dong Li, Chung-Ching Wang, Kim Chang
  • Publication number: 20030216123
    Abstract: A system and method to initiate reliable reception on a packet data channel in a wireless communications system is described.
    Type: Application
    Filed: December 20, 2002
    Publication date: November 20, 2003
    Applicant: Nortel Networks Limited
    Inventors: Chung-Ching Wang, Ke-Chi Jang, Jun Li
  • Publication number: 20030211847
    Abstract: A mobile communications network includes base stations that send messages to mobile stations to control whether the mobile stations transitions to an initialization state or idle state upon call release. The messages also optionally contain frequency and other call control information for the mobile station to use for a subsequent communications session.
    Type: Application
    Filed: December 19, 2002
    Publication date: November 13, 2003
    Applicant: Nortel Networks Limited
    Inventors: Ke-Chi Jang, Chung-Ching Wang
  • Patent number: 6606311
    Abstract: An adaptation sublayer is provided between LAC/MAC and a Packet Data Service Node for a Code Division Multiple Access telecommunication system. Quality of Service parameters are defined and stored within a Base Station and Base Transceiver Station along with subscriber profiles, including class of service. The profiles include specified Quality of Service requirements for each subscriber profile. A Quality of Service Adaptation Layer provides logic and control means to identify each active subscriber, provide the associated Quality of Service and direct the active subscriber's communication connection to a target host.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: August 12, 2003
    Assignee: Nortel Networks Limited
    Inventors: Chung-Ching Wang, Serge Manning, Sanjoy Sen
  • Patent number: 6590882
    Abstract: In a communication system, physical-layer frames for transmission over the physical layer are assembled from link-layer protocol data units (PDU's) by combining several PDU's into a variable-length first block, and providing the first block with an error detection and/or correction code such as a CRC. The first blocks are mapped into fixed-length second blocks, including repetitive copies of the first blocks if space permits. The second blocks are mapped into physical-layer frames, including repetitive copies of the second blocks if space permits. After reception of the frames, the replication enhances the probability of recovering correct PDU's as verified by the error detection and correction codes.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: July 8, 2003
    Assignee: Nortel Networks Limited
    Inventors: Mo-Han Fong, Chung-Ching Wang, Geng Wu
  • Publication number: 20020173316
    Abstract: There is provided, a system and method to limit access to the network during overload conditions by transmitting access control signals to the mobile terminals, where the messages specify a subset of the mobile terminals which will be prevented from accessing the network. Thus, allowing the remaining terminals to access the network.
    Type: Application
    Filed: December 18, 2001
    Publication date: November 21, 2002
    Applicant: Nortel Networks Limited
    Inventors: Ke-Chi Jang, Chung-Ching Wang
  • Publication number: 20020098865
    Abstract: Disclosed is a method of transitioning from a facsimile session to a voice session during a call between a wireless user and a facsimile machine. The method comprises sending a procedure interrupt request, sending a procedure interrupt response, sending a procedure interrupt confirmation, negotiating to a voice service option, and then beginning the voice service option.
    Type: Application
    Filed: November 15, 2001
    Publication date: July 25, 2002
    Applicant: Nortel Networks Limited
    Inventors: Ke-Chi Jang, Chung-Ching Wang
  • Publication number: 20020055364
    Abstract: A method and system is provided for controlling data transfer using a short data burst mechanism between a mobile station (MS) and a base station (BS). After identifying that a short data burst mechanism is desired to be used for transmitting data between the MS and the BS, the data is transmitted over a common channel used for communication between the MS and the BS without having to establish a communication link between the MS and the BS over a traffic channel.
    Type: Application
    Filed: September 12, 2001
    Publication date: May 9, 2002
    Inventors: Chung-Ching Wang, Kim Chang
  • Patent number: 6370392
    Abstract: Various methods for effectively detecting the discontinuous transmission (DTX) mode are provided both from the physical layer perspective and from the medium access layer (MAC) perspective. The DTX mode transmission on reverse supplemental channels is detected by comparing a transmitted and a received power ratio of a pilot channel and a supplemental channel. For a reverse link communication, the DTX mode transmission is detected on dedicated control channels. The DTX mode transmission on a forward link supplemental channel can also be detected by monitoring both the transmitted and received power ratios of a primary power control channel and the supplemental channel. As an alternative to or in combination with the above mentioned methods, in order to monitor the DTX mode, a new network parameter is introduced which requires a change in the IS-2000-3 standard. This parameter acts as an indicator signaling to a receiver, from the MAC layer, that the transmitter has entered into the DTX mode.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: April 9, 2002
    Assignee: Nortel Networks Limited
    Inventors: Jun Li, Chung-Ching Wang
  • Patent number: 6230024
    Abstract: A wireless communication network includes a mobile station and a base station which are adapted to allow an ongoing voice call to be converted to a digital fax call without forcing the user to relinquish the line and to restablish a call for the purposes of a transmitting digital fax (fax from a digital device). A base station controller is adapted to respond to an analog tone which prompts the base station to set up a digital fax call even though a voice call is already in place. Similarly, a mobile station is adapted to set up a digital fax call even though a voice call is in place either when it receives the analog tone originated by the PSTN or when it receives an AT command from a personal computer indicating that a digital fax transmission is desired.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: May 8, 2001
    Assignee: Nortel Networks Limited
    Inventors: Chung-Ching Wang, Serge Manning, Jerry Louis Mizell
  • Patent number: 5090565
    Abstract: An adhesive tape holder having a base and a roller plate is disclosed. An urging member having an urging plate is formed at one end of a notch formed on the roller plate. A pressing plate is disposed on the slot formed at the other end on the notch. The urging plate is in contact with the adhesive tape such that the rotation of hte adhesive tape roll mounted onto a roller will pull it the tape and cut out at a desired length.
    Type: Grant
    Filed: January 8, 1991
    Date of Patent: February 25, 1992
    Assignee: Seal King Industrial Co., Ltd.
    Inventor: Chung-Ching Wang