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).
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Publication number: 20110249610Abstract: 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: ApplicationFiled: September 28, 2010Publication date: October 13, 2011Applicant: QUALCOMM INCORPORATEDInventors: Sai Yiu Duncan Ho, Fatih Ulupinar, Parag Arun Agashe
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Publication number: 20110243076Abstract: 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: ApplicationFiled: October 1, 2010Publication date: October 6, 2011Applicant: QUALCOMM INCORPORATEDInventors: Bao V. Nguyen, Srividhya Krishnamoorthy, Vanitha A. Kumar, Sai Yiu Duncan Ho
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Publication number: 20110205980Abstract: 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: ApplicationFiled: August 5, 2010Publication date: August 25, 2011Applicant: QUALCOMM INCORPORATEDInventors: Rajat Prakash, Rajarshi Gupta, Sai Yiu Duncan Ho
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Publication number: 20110194511Abstract: 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: ApplicationFiled: February 7, 2011Publication date: August 11, 2011Applicant: QUALCOMM IncorporatedInventors: Wanshi Chen, Hao Xu, Naga Bhushan, Sai Yiu Duncan Ho, Tingfang Ji
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Publication number: 20110158166Abstract: 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: ApplicationFiled: July 2, 2010Publication date: June 30, 2011Applicant: QUALCOMM IncorporatedInventors: Jiwoong Lee, Sai Yiu Duncan Ho, Fatih Ulupinar
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Publication number: 20110158117Abstract: 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: ApplicationFiled: June 28, 2010Publication date: June 30, 2011Applicant: QUALCOMM IncorporatedInventors: Sai Yiu Duncan Ho, Peter Gaal, Parag Arun Agashe
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Publication number: 20110149848Abstract: 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: ApplicationFiled: June 24, 2010Publication date: June 23, 2011Applicant: QUALCOMM IncorporatedInventors: Sai Yiu Duncan Ho, Fatih Ulupinar, Parag Arun Agashe, Rajat Prakash, Osok Song
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Publication number: 20110141901Abstract: 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: ApplicationFiled: June 15, 2010Publication date: June 16, 2011Applicant: QUALCOMM IncorporatedInventors: Tao Luo, Durga Prasad Malladi, Juan Montojo, Nathan Edward Tenny, Sai Yiu Duncan Ho
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Patent number: 7941152Abstract: 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: GrantFiled: July 23, 2007Date of Patent: May 10, 2011Assignee: QUALCOMM, IncorporatedInventors: Edward G. Tiedemann, Sai Yiu Duncan Ho, Jun Wang, Ragulan Sinnarajah, Ramin Rezaiifar
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Publication number: 20110103509Abstract: 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: ApplicationFiled: April 21, 2010Publication date: May 5, 2011Applicant: QUALCOMM INCORPORATEDInventors: Wanshi Chen, Jelena M. Damnjanovic, Juan Montojo, Sai Yiu Duncan Ho
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Publication number: 20110019617Abstract: 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: ApplicationFiled: June 18, 2010Publication date: January 27, 2011Applicant: QUALCOMM IncorporatedInventors: Sai Yiu Duncan Ho, Fatih Ulupinar, Parag Arun Agashe, Rajat Prakash
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Patent number: 7873163Abstract: 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: GrantFiled: November 5, 2001Date of Patent: January 18, 2011Assignee: QUALCOMM IncorporatedInventors: Roy Franklin Quick, Jr., Sai Yiu Duncan Ho
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Publication number: 20100322177Abstract: 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: ApplicationFiled: June 21, 2010Publication date: December 23, 2010Applicant: QUALCOMM IncorporatedInventors: Tao Luo, Durga Prasad Malladi, Xiaoxia Zhang, Juan Montojo, Sai Yiu Duncan Ho, Nathan Edward Tenny
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Publication number: 20100309788Abstract: 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: ApplicationFiled: June 7, 2010Publication date: December 9, 2010Applicant: QUALCOMM IncorporatedInventors: Sai Yiu Duncan Ho, Shailesh Maheshwari
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Publication number: 20100274915Abstract: 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: ApplicationFiled: April 20, 2010Publication date: October 28, 2010Applicant: QUALCOMM IncorporatedInventors: Sai Yiu Duncan Ho, Parag Arun Agashe, Fatih Ulupinar
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Publication number: 20100227615Abstract: 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: ApplicationFiled: May 19, 2010Publication date: September 9, 2010Applicant: QUALCOMM IncorporatedInventors: Peter Gaal, Sai Yiu Duncan Ho
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Publication number: 20100215006Abstract: 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: ApplicationFiled: January 26, 2010Publication date: August 26, 2010Applicant: QUALCOMM INCORPORATEDInventors: Sai Yiu Duncan Ho, Rajat Prakash, Parag A. Agashe, Fatih Ulupinar, Jelena M. Damnjanovic
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Patent number: 7778631Abstract: 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: GrantFiled: January 28, 2005Date of Patent: August 17, 2010Assignee: Qualcomm IncorporatedInventors: Sai Yiu Duncan Ho, Edward G. Tiedemann, Jr., Jun Wang, Ragulan Sinnarajah, Ramin Rezaiifar
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Publication number: 20100177701Abstract: 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: ApplicationFiled: January 13, 2010Publication date: July 15, 2010Applicant: QUALCOMM INCORPORATEDInventors: Shailesh Maheshwari, Sai Yiu Duncan Ho
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Publication number: 20100172313Abstract: 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: ApplicationFiled: January 6, 2010Publication date: July 8, 2010Applicant: QUALCOMM INCORPORATEDInventors: Sai Yiu Duncan Ho, Wanshi Chen, Juan Montojo