Patents by Inventor Yan-Xiu Zheng
Yan-Xiu Zheng 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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Patent number: 8265096Abstract: A method of constructing a frame structure for data transmission, the method comprising generating a first section comprising data configured in a first format compatible with a first communication system, generating a second section following the first section, the second section comprising data configured in a second format compatible with a second communication system, wherein the second format is different from the first format, generating at least one non-data section containing information describing an aspect of data in at least one of the first section and the second section, and combining the first section, the second section and the at least one non-data section to form the frame structure.Type: GrantFiled: July 7, 2008Date of Patent: September 11, 2012Assignee: Industrial Technology Research InstituteInventors: Yan-Xiu Zheng, Ren-Jr Chen, Chang-Lung Hsiao, Pang-An Ting
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Patent number: 8225165Abstract: Methods and apparatuses for encoding data in a wireless communication system including receiving an information sequence, and encoding the received information sequence to generate three subblocks of sequences. A first subblock of the three subblocks is the information sequence, a second subblock of the three subblocks is an encoded sequence, and a third subblock of the three subblocks is an interleaved and encoded sequence. The method further includes permuting the three subblocks of encoded sequences separately by subblock permutation, and continuously mapping the three subblocks into a circular buffer, the circular buffer including a first part, a second part, and a third part.Type: GrantFiled: October 8, 2008Date of Patent: July 17, 2012Assignee: Industrial Technology Research InstituteInventor: Yan-Xiu Zheng
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Publication number: 20120100851Abstract: A wireless communications device with a wireless module and a controller module is provided. The wireless module performs wireless transmission and reception to and from a service network comprising at least two first home base stations having the same physical cell identity (PCI) or physical scrambling code (PSC), a plurality of second home base stations neighboring the first home base stations, and a macro base station. The controller module receives a message from the macro base station via the wireless module, requests the wireless module to detect a plurality of PCIs or PSCs respectively corresponding to the first home base stations and the second home base stations in response to the message, and transmits to the macro base station via the wireless module the detected PCIs or PSCs, prior to being handed over to the one of the first home base stations from the macro base station.Type: ApplicationFiled: October 25, 2010Publication date: April 26, 2012Applicant: ACER INCORPORATEDInventors: Yan-Xiu Zheng, Chun-Chia Chen, Ming-Bing Chen, Hao-Wen Chen
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Publication number: 20120069873Abstract: The invention provides a broadcasting system. In one embodiment, the broadcasting system comprises a transceiver and a processor. The transceiver carries out signal transmission via at least one fully configured carrier and at least one partially configured carrier. The processor controls the transceiver to broadcast a first preamble set via the at least one fully configured carrier, and controls the transceiver to broadcast a secondary preamble set via the at least one partially configured carrier, wherein the first preamble set comprises a primary preamble and at least one secondary preamble, and the second preamble set comprises no primary preamble and at least one secondary preamble.Type: ApplicationFiled: September 17, 2010Publication date: March 22, 2012Applicant: ACER INCORPORATEDInventor: Yan-Xiu Zheng
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Publication number: 20120063305Abstract: Prioritized random access methods are proposed. According to an embodiment, random access attempts are classified into the priority levels according to delay requirements, and adedicated random access opportunities are reserved for different priority levels. A congestion detecting mechanism is introduced for such dedicated ranging (random access) opportunities. When congestion is detected by the base station, parameters or configurations of random access can be dynamically or temporarily modified through random access response message. Furthermore, a prioritized contention resolution is introduced to guarantee a high priority access is processed earlier than a low priority access. According to another embodiment, another prioritized contention resolution is introduced to reduce the impact of random access of a low priority M2M device upon H2H traffic.Type: ApplicationFiled: September 2, 2011Publication date: March 15, 2012Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chun-Yuan Chiu, Yung-Han Chen, Yan-Xiu Zheng, Yu-Chuan Fang
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Publication number: 20120039405Abstract: A method of designing a reference signal pattern for a network in a wireless communication system is disclosed. The method comprises transmitting a plurality of cell-specific reference signal (CRSs) in a subframe, the subframe comprising a plurality of resource elements that are divided in time across a plurality of subcarriers to form a plurality of orthogonal frequency division multiplexed (OFDM) symbols, each of the plurality of resource element occupying a predetermined amount of time on a respective one of the plurality of subcarriers. wherein, a first set of the plurality of CRSs is allocated to a first set of the plurality resource elements on a first symbol and a second symbol over a third subcarrier, a sixth subcarrier, a ninth subcarrier and a twelfth subcarrier.Type: ApplicationFiled: July 5, 2011Publication date: February 16, 2012Applicant: ACER INCORPORATEDInventors: Yan-Xiu Zheng, Chang-Lan Tsai, Chung-Lien Ho
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Publication number: 20120033589Abstract: Apparatuses and methods are provided for co-existence between different first and second radio access technologies (RATs). The apparatus is configured or caused to perform operations, which the method may include. The operations may include selecting parameter(s) of a frame structure of the first RAT so as to facilitate its co-existence with the second RAT. These parameters may include a given length of a cyclic prefix of subframe(s) of the first frame structure, or the types of subframes of which the first frame structure is composed. The operations may additionally or alternatively include selecting, for the first RAT, the uplink and/or downlink duration(s) and/or transmit transition gap therebetween so as to satisfy a number of conditions that may define co-existence between the first and second RATs. Further, the operations may additionally or alternatively include structuring cyclic prefixes of the frame structures of the first RAT to reduce network search complexity.Type: ApplicationFiled: June 17, 2011Publication date: February 9, 2012Inventor: Yan-Xiu Zheng
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Publication number: 20110310838Abstract: A method for reference signal pattern allocation for a eNodeB in a wireless communication system is disclosed. The method comprises allocating a plurality of physical resource blocks (PRBs) to at least one mobile device; and mapping a plurality of reference signal patterns to the PRBs according to a mapping rule.Type: ApplicationFiled: June 20, 2011Publication date: December 22, 2011Applicant: ACER INCORPORATEDInventors: Yan-Xiu Zheng, Chung-Lien Ho
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Patent number: 8020064Abstract: A decoding apparatus and method are described. The decoder includes N successive decoder groups numbered 1 to N arranged in series. Each decoder group includes primary decoding means for decoding the first sequence of codewords in combination with the source sequence of symbols to produce a sequence of primary decoded symbols; intermediate interleaving means for interleaving the sequence of primary decoded symbols using intra-block permutations on the source sequence of symbols and inter-block permutations on each intra-block permuted block across the predetermined number of the intra-block permuted blocks to produce a sequence of intermediate symbols; secondary decoding means for decoding the second sequence of codewords in combination with the sequence of intermediate symbols and a sequence of interleaved source symbols to produce a sequence of secondary decoded symbols; and de-interleaving means for de-interleaving the sequence of secondary decoded symbols to produce a sequence of estimated symbols.Type: GrantFiled: November 20, 2007Date of Patent: September 13, 2011Assignee: Industrial Technology Research InstituteInventors: Yan-Xiu Zheng, Yu T. Su
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Publication number: 20110195733Abstract: A method for a base station to allocate resources to a mobile station, the resources being included in one or more subbands each including a plurality of resource units, the method including: allocating a part of a first one of the subbands to the mobile station, the part including one or more resource units in the first one of the subbands; and indicating to the mobile station the allocated part of the first one of the subbands by indicating a resource allocation pattern corresponding to the allocated part of the first one of the subbands.Type: ApplicationFiled: January 26, 2011Publication date: August 11, 2011Inventors: Yan-Xiu Zheng, Chang-Lan Tsai
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Publication number: 20110158168Abstract: A signal interference handling method adapted to a cellular system, and a system and an apparatuses using the same are provided, where the cellar system includes a macro/micro cell base station (MBS), a home base station (HBS), and a MBS-served mobile station (m-MS), and the signal interference handling method includes steps. The m-MS detects whether there is mutual interference. The m-MS sends an interference mitigation (IM) request to the HBS if there is mutual interference. The HBS enters a low duty mode (LDM) after the HBS receives the IM request.Type: ApplicationFiled: December 15, 2010Publication date: June 30, 2011Applicant: ACER INCORPORATEDInventors: Yung-Han Chen, Yan-Xiu Zheng, Chun-Yuan Chiu
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Publication number: 20110159882Abstract: A pilot selection method adapted for selecting rank-2 pilot patterns for a macrocell advanced base station (ABS), a femtocell ABS and a non-macrocell and non-femtocell ABS is proposed along with a wireless communication system and a base station thereof. Different rank-2 pilot pattern is selected for a femtocell ABS from its overlay macrocell ABS and non-macrocell and non-femtocell ABS rank-2 pilot patterns. Another pilot selection method for selecting a rank-1 pilot pattern for a femtocell ABS co-located with at least a macrocell ABS is also proposed. Different rank-1 pilot pattern is selected for a femtocell ABS from its overlay macrocell ABSs using rank-1 and/or rank-2 pilot patterns, where some of the macrocell ABSs can use rank-2 pilot patterns and the rest of the macrocell ABSs just use rank-1 pilot patterns. Also, different rank-1 pilot pattern is selected for the femtocell ABS from its neighboring femtocell ABSs using rank-1 pilot patterns.Type: ApplicationFiled: October 18, 2010Publication date: June 30, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chung-Lien Ho, Chang-Lan Tsai, Yan-Xiu Zheng, Yu-Chuan Fang
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Publication number: 20110161771Abstract: A method of providing resource unit based data block partitioning may include determining, for a bit stream to be encoded in a coding scheme including an upper layer coding and a physical layer coding, whether upper layer coding is enabled. The method may further include, in response to the upper layer coding being enabled, partitioning the bit stream into one or more blocks for forward error correction coding. The one or more blocks may have a block size determined based on a size of a resource unit. The resource unit size may correspond to one or more units predefined in the physical layer for the resource allocation. A corresponding apparatus is also provided.Type: ApplicationFiled: December 22, 2010Publication date: June 30, 2011Inventors: Yan-Xiu Zheng, Yu-Chuan Fang, Chang-Lan Tsai, Chung-Lien Ho
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Publication number: 20110158148Abstract: A resource allocation method and a resource indication method for E-MBS system, and a mobile station using the same are proposed. The resource units of a first service flow are allocated following the end of the E-MBS MAP of the E-MBS region, along with the increasing of frequency domain index. When the edge of the E-MBS region in frequency domain is reached, the resource units of mth service flow are continued to be allocated from top frequency domain index in next time domain index, where m is an integer greater than or equal to 1. The resource units of m+1th service flow are allocated following the mth service flow, and such procedures are repeated until all service flows are allocated required resource units. The resource indication method indicates a specific service flow by absolute location in the E-MBS region formed based upon the resource allocation method.Type: ApplicationFiled: December 1, 2010Publication date: June 30, 2011Applicant: ACER INCORPORATEDInventors: Yan-Xiu Zheng, Yu-Chuan Fang, Tsung-Lien Ho, Chun-Yuan Chiu, Chang-Lan Tsai
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Publication number: 20110159905Abstract: A carrier assignment method, a multi-carrier base station and a wireless communication device using the same are proposed. The carrier assignment method is adapted for assigning carriers in a paging group for an ABS with multi-carriers, and includes the following step. At least two paging carriers is assigned in a paging group, where all assigned carriers belonging to a paging group are in the same frequency band. Also, small but close frequency bands are grouped into a super band, where different carriers in different super bands are assigned into different paging groups. The wireless communication device determines the paging carrier index for itself by a mapping function of a mobile identification and the number of carriers. The paging message for the wireless communication device is sent only on the paging carrier corresponding to the determined paging carrier index.Type: ApplicationFiled: November 29, 2010Publication date: June 30, 2011Applicant: ACER INCORPORATEDInventor: Yan-Xiu Zheng
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Publication number: 20110103269Abstract: A wireless communication system and a relay station and a wireless communication device thereof are provided. The wireless communication system includes at least a base station, at least a relay station, and at least a wireless communication device. The relay station is wirelessly connected to the base station. The wireless communication device is wirelessly connected to the relay station. At least two uplinks of the wireless communication system are inband or on the same carrier, and at least two downlinks of the wireless communication system are outband or on different carriers.Type: ApplicationFiled: October 19, 2010Publication date: May 5, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventor: Yan-Xiu Zheng
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Publication number: 20110045858Abstract: Systems and methods for network entry management are provided. The system includes a base station and a mobile station. The base station broadcasts synchronization channels (SCH) on multiple carriers, where the SCH may be hierarchical synchronization channel composed of primary synchronization channel (P-SCH) and secondary synchronization channel (S-SCH) which are used for timing, frequency synchronization, cell identification, etc. The carriers include at least a first carrier including at least one P-SCH and do not include a S-SCH. The mobile station scans the first carrier, and checks whether a P-SCH is broadcasted on the first carrier. If a P-SCH is broadcasted on the first carrier, the mobile station checks whether an S-SCH is broadcasted on the first carrier. If no S-SCH is broadcasted on the first carrier, the mobile station scans for a second carrier broadcasted by the base station.Type: ApplicationFiled: July 16, 2010Publication date: February 24, 2011Applicant: ACER INCORPORATEDInventors: Yan-Xiu Zheng, Ming-Bing Chen
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Publication number: 20110026498Abstract: The invention provides a wireless communication system. In one embodiment, the wireless communication system comprises a base station and user equipment. The base station transmits data to user equipment via a plurality of the component carriers comprising a series of data transmission cycles, interleaves starting time of a plurality of active periods of the component carriers in each data transmission cycle in an order, and sends control data to the user equipment via the component carriers during the active periods of the component carriers. The user equipment receives the control data via the component carriers during the active periods of the component carriers.Type: ApplicationFiled: June 17, 2010Publication date: February 3, 2011Applicant: ACER INCORPORATEDInventors: Yan-Xiu Zheng, Ming-Bing Chen, Hao-Wen Chen
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Publication number: 20110014915Abstract: A method for mobile communication and a system thereof are provided. The system for mobile communication includes a main base station and a plurality of sub-communication devices. The sub-communication device is one of a sub-base station and a user equipment. The sub-base stations and the user equipments are located in the macrocell of the main base station. The method includes the following steps. First, locations of the sub-communication devices are obtained. Then, the sub-communication devices are grouped based on the locations of the sub-communication devices. And, an allocation of resource blocks is obtained according to the grouping results. The sub-communication devices receive the allocation of resource blocks for control signaling and data transmission. And, the usage of same resource blocks are enabled by the sub-base station allocated in the same resource blocks in response to receipt of the allocation.Type: ApplicationFiled: April 8, 2010Publication date: January 20, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ming-Bing Chen, Diane Chen, Yan-Xiu Zheng, Yung-Han Chen
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Patent number: 7873897Abstract: A bit-level turbo code encoder is provided. The bit-level turbo code encoder is configured to receive a first input data sequence and generate a first output data sequence. The bit-level turbo code encoder includes a first non-binary convolutional code encoder, a bit-level interleaver, and a second non-binary convolutional code encoder. The first non-binary convolutional code encoder is configured to process the first input data sequence and generate a second output data sequence. The bit-level interleaver is configured to receive the first input data sequence as a first sequence and interleave the first sequence at bit level to generate a fourth sequence. The second non-binary convolutional code encoder is coupled with the bit-level interleaver and configured to receive the fourth sequence and process the fourth sequence to generate a third output data sequence.Type: GrantFiled: September 3, 2008Date of Patent: January 18, 2011Assignee: Industrial Technology Research InstituteInventor: Yan-Xiu Zheng