Patents by Inventor Sai Yiu Duncan Ho

Sai Yiu Duncan Ho 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: 20110249610
    Abstract: Methods and apparatuses are provided that facilitate compressing packet headers for communicating among access points. An access point can advertise compression profiles to one or more disparate access points, and the one or more disparate access points can select at least one compression profile for compressing/decompressing packets related to the one or more disparate access points and/or devices communicating therewith. The one or more disparate access points can notify the access point of the selected compression profile, a compression context identifier, and/or static data related to identifying associated packets. In this regard, the access point can compress packets that have the associated static data according to the compression profile and compression context identifier. Similarly, the access point can decompress packets from the one or more disparate access points based on the compression context identifier.
    Type: Application
    Filed: September 28, 2010
    Publication date: October 13, 2011
    Applicant: QUALCOMM INCORPORATED
    Inventors: Sai Yiu Duncan Ho, Fatih Ulupinar, Parag Arun Agashe
  • Publication number: 20110243076
    Abstract: Methods and apparatuses are provided that facilitate providing quality of service for similar priority logical channels at least in part by assigning dynamic priority levels to the logical channels to allow certain logical channels to be assigned resources before other logical channels. Dynamic priority levels can be assigned based at least in part on a total accumulated used bytes of a given logical channel scaled by a prioritized bit rate of the logical channel. Thus, logical channels with a lower number of total accumulated used bytes scaled by the prioritized bit rate can be assigned higher priority to ensure resources are assigned to the logical channels. Moreover, the dynamic priority levels can be normalized to align the dynamic priority levels within certain values so as not to interfere with other logical channels of different assigned priority.
    Type: Application
    Filed: October 1, 2010
    Publication date: October 6, 2011
    Applicant: QUALCOMM INCORPORATED
    Inventors: Bao V. Nguyen, Srividhya Krishnamoorthy, Vanitha A. Kumar, Sai Yiu Duncan Ho
  • Publication number: 20110205980
    Abstract: Systems and methodologies are described that facilitate generating anticipatory resource requests for multiple node communications in wireless networks. In a peer-to-peer, ad hoc, relay network, or similar configuration where one node facilitates communicating between a plurality of additional nodes, the node can generate an anticipatory resource request to a serving node. A number of resources can be determined for at least one of the plurality of additional nodes (from the received resource request, one or more communication parameters, a set of granted resources, etc.). The device can generate an anticipatory resource request for communicating to the serving device based on the number of resources. In addition, the anticipatory resource request can be generated based on parameters and/or resource requests from multiple other devices.
    Type: Application
    Filed: August 5, 2010
    Publication date: August 25, 2011
    Applicant: QUALCOMM INCORPORATED
    Inventors: Rajat Prakash, Rajarshi Gupta, Sai Yiu Duncan Ho
  • Publication number: 20110194511
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which a resource assignment utilizing the PDCCH and/or the R-PDCCH may be addressed to a group of UEs, rather than an individual UE, by utilizing a group identifier for indicating to the group that there may be information for any UE in the group in the PDSCH. In this way, the capacity of the PDCCH, which is limited, is multiplied and a potential bottleneck at PDCCH scheduling can be relieved.
    Type: Application
    Filed: February 7, 2011
    Publication date: August 11, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Hao Xu, Naga Bhushan, Sai Yiu Duncan Ho, Tingfang Ji
  • Publication number: 20110158166
    Abstract: Systems and methodologies are described that facilitate compressing headers for relay nodes. In particular, a robust header compression (RoHC) profile can be defined for general packet radio service (GPRS) tunneling protocol (GTP) headers. Upon receiving a packet with one or more GTP headers, an access point or relay node can determine whether the one or more GTP headers are compressible and can apply the RoHC profile to compress the one or more GTP headers. In addition, the packet can include a baseheader encapsulated by the one or more GTP headers, which can also be compressed according to a RoHC profile specific to the baseheader. Moreover, RoHC compressed headers can be decompressed according to the GTP RoHC profile.
    Type: Application
    Filed: July 2, 2010
    Publication date: June 30, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Jiwoong Lee, Sai Yiu Duncan Ho, Fatih Ulupinar
  • Publication number: 20110158117
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which a determination is made of a first power available for transmitting a first signal using a first radio access technology while simultaneously transmitting a second signal using a second radio access technology different from the first radio access technology. An uplink grant is received and a determination is made regarding a second power for transmitting the first signal on uplink using the first radio access technology based on the uplink grant. A determination is made regarding a difference between the first power and the second power and the information related to the difference via the first radio access technology is reported based upon a trigger.
    Type: Application
    Filed: June 28, 2010
    Publication date: June 30, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Peter Gaal, Parag Arun Agashe
  • Publication number: 20110149848
    Abstract: Systems and methodologies are described that facilitate compressing headers for relay nodes. In particular, a plurality of internet protocol (IP) headers, tunneling protocol headers, and/or other routing headers in a packet can be compressed to facilitate efficient communications of packets between relay nodes and/or a donor access point. An access point receiving packets to be compressed can provide a disparate access point with a compression context and an uncompressed packet. The disparate access point can generate a decompression context related to subsequent packets having similar header values and can store the decompression context with the context identifier. The access point can subsequently compress received packets having similar header values and communicate the compressed packets with the context identifier to the disparate access point. The disparate access point can apply the previously generated decompression context associated with the context identifier to decompress the packets.
    Type: Application
    Filed: June 24, 2010
    Publication date: June 23, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Fatih Ulupinar, Parag Arun Agashe, Rajat Prakash, Osok Song
  • Publication number: 20110141901
    Abstract: Methods, systems, apparatus and computer program products are provided to improve the reliability of data reception. In one provided embodiment, a communication signal is parsed by a communication device to identify repeat request identifiers. The device determines an inter-arrival time of two instances of the same identifier and processes the communication signal based on a comparison between the inter-arrival time and a predetermined time. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims.
    Type: Application
    Filed: June 15, 2010
    Publication date: June 16, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Tao Luo, Durga Prasad Malladi, Juan Montojo, Nathan Edward Tenny, Sai Yiu Duncan Ho
  • Patent number: 7941152
    Abstract: An apparatus and method for communications of scheduling information of reverse link transmissions are disclosed. A base station controller determines scheduling of a reverse link supplemental channel transmission for a mobile station in a communication system (100). The base station controller groups the mobile station in a group of mobile stations and assigns a forward link channel assignment channel to the group of mobile stations. A transceiver (400) incorporates information relating to the determined scheduling in the assigned forward link common assignment channel and transmits the assigned forward link common assignment channel to the mobile station for scheduling the reverse link supplemental channel transmission. The mobile station receives the assigned forward link common assignment channel.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: May 10, 2011
    Assignee: QUALCOMM, Incorporated
    Inventors: Edward G. Tiedemann, Sai Yiu Duncan Ho, Jun Wang, Ragulan Sinnarajah, Ramin Rezaiifar
  • Publication number: 20110103509
    Abstract: A wireless communication network distributes resources for a Physical Downlink Control CHannel (PDCCH) over multiple carriers in accordance with a constraint that limits a number of blind decoding actions required by user equipment (UE). Distribution can entail segregating UE-specific and common search spaces to different monitored carriers. Distribution can entail segregating aggregation levels to different monitored carriers. Distribution can entail segregating a number of decoding candidates for a given aggregation level to different monitored carriers. The distribution can be orthogonal or non-orthogonal, and can be UE-based or per cell-based. The distribution can be static, semi-static or hop with time.
    Type: Application
    Filed: April 21, 2010
    Publication date: May 5, 2011
    Applicant: QUALCOMM INCORPORATED
    Inventors: Wanshi Chen, Jelena M. Damnjanovic, Juan Montojo, Sai Yiu Duncan Ho
  • Publication number: 20110019617
    Abstract: Systems and methodologies are described that facilitate compressing headers for relay nodes. In particular, a plurality of internet protocol (IP) headers, tunneling protocol headers, and/or other routing headers in a packet can be compressed to facilitate efficient communications of packets between relay nodes and/or a donor access point. A donor or other upstream access point can be provided with a filter mask, bit stream, and filter mask identifier generated by a related relay node for packets having given static header data. Thus, the donor or other upstream access point can apply the filter mask to incoming packet headers, and where a resulting bit stream matches the received bit stream, can replace at least a portion of the packet headers with the filter mask identifier. The relay node can subsequently decompress the packet headers based on the filter mask identifier. Similar functionality can be used for compressing uplink communications.
    Type: Application
    Filed: June 18, 2010
    Publication date: January 27, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Fatih Ulupinar, Parag Arun Agashe, Rajat Prakash
  • Patent number: 7873163
    Abstract: In a communication system (100), a method and apparatus provides for message integrity regardless of the operating version of an authentication center (198) or an interface (197) between the authentication center (198) and a mobile switching center (199). The method and apparatus include generating a cellular message encryption algorithm (CMEA) key, and generating a CMEA-key-derived integrity key (CIK) based on the CMEA key for message integrity between a mobile station and a base station. The mobile station transmits a registration message to the base station, and determines an operating version of the authentication center (198) in communication with the base station based on whether the mobile station receives a registration accepted order or some elements of an authentication vector from the base station. The CIK is generated based on the CMEA key, if the mobile station receives a valid registration accepted order from the base station.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: January 18, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Roy Franklin Quick, Jr., Sai Yiu Duncan Ho
  • Publication number: 20100322177
    Abstract: Providing for improved error control signaling in wireless communications is disclosed herein. By way of example, multiple transmissions can be conducted for a HARQ process prior to a scheduled feedback signal on the HARQ process, causing a receiving device to combine the multiple transmissions, rather than treat them as separate transmissions. In this manner, multiple transmissions can be employed to increase overall receive energy, without violating maximum transmit power constraints in a wireless communication. Further, these multiple transmissions can be configured based on prevailing signal strength at the receiving device, or based on processing capabilities of the receiving device, providing flexible protocols that can accommodate advanced as well as legacy UEs in wide range of wireless conditions.
    Type: Application
    Filed: June 21, 2010
    Publication date: December 23, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Tao Luo, Durga Prasad Malladi, Xiaoxia Zhang, Juan Montojo, Sai Yiu Duncan Ho, Nathan Edward Tenny
  • Publication number: 20100309788
    Abstract: Systems, methods, and apparatuses are disclosed to facilitate wireless communications. User equipment (UE), such as a mobile device, identifies data congestion and transmits a recommended data rate modification wireless signal (e.g., a recommended reduced data rate) to the base station that is transmitting data to the UE. The base station may reduce the data rate of the down link (DL) to the reduced data rate. The UE may then receive data from the base station at the reduced data rate. Therefore, flow control may be implemented at the base station side (e.g., sometimes referred to as the Network (NW) side) based upon the reduced data rate modification determined and transmitted by the UE to the base station. In this way, the data rate transmission to the UE can be reduced to allow the UE to successfully process received data and successfully perform its functions.
    Type: Application
    Filed: June 7, 2010
    Publication date: December 9, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Shailesh Maheshwari
  • Publication number: 20100274915
    Abstract: Systems and methodologies are described that facilitate providing user plane support for internet protocol (IP) relays. Service data units (SDU) received at a radio communication layer can be provided to an upper communication layer, such as a packet data convergence protocol (PDCP) layer, without regard to sequence numbers. The upper communication layer can handle reordering of the received protocol data units. Since communications related to a plurality of devices through one or more IP relays can be mapped over a single bearer, allowing reordering at the upper communication layer can mitigate delay caused where a donor or other upstream access point is delayed in providing a sequential SDU related to one of a plurality of devices downstream. In this regard, SDUs related to other devices can be processed by the upper communication layer while waiting for the sequential SDU.
    Type: Application
    Filed: April 20, 2010
    Publication date: October 28, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Parag Arun Agashe, Fatih Ulupinar
  • Publication number: 20100227615
    Abstract: Improved serving sector selection mechanisms are provided which convey sector load information to a wireless communicator. The wireless communicator can use carrier-to-interference (C/I) ratio measurements and sector load information for each of its Active Set (AS) sectors (or all sectors in its Active Set (AS)) to determine the best serving sector.
    Type: Application
    Filed: May 19, 2010
    Publication date: September 9, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Peter Gaal, Sai Yiu Duncan Ho
  • Publication number: 20100215006
    Abstract: Certain embodiments of the present disclosure propose methods for supporting multicarrier in a radio link control (RLC) communication layer. The proposed methods reduce the processing required when scheduling information for each carrier becomes available by generating protocol data units (PDUs) in advance, and storing the PDUs in buffers associated with each carrier.
    Type: Application
    Filed: January 26, 2010
    Publication date: August 26, 2010
    Applicant: QUALCOMM INCORPORATED
    Inventors: Sai Yiu Duncan Ho, Rajat Prakash, Parag A. Agashe, Fatih Ulupinar, Jelena M. Damnjanovic
  • Patent number: 7778631
    Abstract: Techniques for synchronization of stored service parameters are disclosed. In one aspect, a configuration identifier is transmitted from a mobile station to a base station, and compared with an identifier generated in the base station. If the identifiers match, the configuration is used for communication. In another aspect, the identifier is generated by selecting an identifier associated with a configuration from a configuration table. In yet another aspect, the identifier is generated by computing a cyclic redundancy check (CRC) of the configuration. Various other aspects are also presented. These aspects have the benefit of preventing attempted use of unsynchronized stored service parameters and associated call setup failures and subsequent renegotiation, with the net effect of reducing call setup time and more efficient use of system resources.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: August 17, 2010
    Assignee: Qualcomm Incorporated
    Inventors: Sai Yiu Duncan Ho, Edward G. Tiedemann, Jr., Jun Wang, Ragulan Sinnarajah, Ramin Rezaiifar
  • Publication number: 20100177701
    Abstract: Providing for improved acknowledgment and retransmission protocols for wireless communication is described herein. By way of example, the acknowledgment and retransmission protocols can comprise including a poll element, or reply command, within a data unit that is part of a wireless transmission. A timer is set following sending the wireless transmission, and if a reply is not received within expiration of the timer, retransmission is triggered. According to specific aspects, retransmission comprises resending the data unit that includes the poll element or reply command. In this manner, redundant retransmission can be mitigated, whether because a receiver fails to successfully receive one or more subsets of the wireless transmission, or because the transmitter fails to obtain a reply to the wireless transmission.
    Type: Application
    Filed: January 13, 2010
    Publication date: July 15, 2010
    Applicant: QUALCOMM INCORPORATED
    Inventors: Shailesh Maheshwari, Sai Yiu Duncan Ho
  • Publication number: 20100172313
    Abstract: Certain aspects of the present disclosure relate to a technique for releasing semi-persistent scheduling resources and for immediate entering an energy saving mode of operation at a user terminal.
    Type: Application
    Filed: January 6, 2010
    Publication date: July 8, 2010
    Applicant: QUALCOMM INCORPORATED
    Inventors: Sai Yiu Duncan Ho, Wanshi Chen, Juan Montojo