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公开(公告)号：US11637583B2
公开(公告)日：2023-04-25
申请号：US17306609
申请日：2021-05-03
申请人： ZTE Corporation
发明人： Ziyang Li , Li Tian , Wei Cao , Nan Zhang , Zhifeng Yuan
IPC分类号： H04B1/7073 , H04L5/02 , H04J13/00 , H04B1/707 , H04L1/00
摘要： Methods, systems, and devices for the design of symbol-group based spreading schemes are described. An exemplary method for wireless communication includes transmitting, by a terminal, a first spread signal that is generated by spreading a first group of N data symbols using a first set of N sequences, where N is a symbol-group length, L is a spreading length, each of the first set of N sequences is from an orthogonal spreading sequence set that comprises L sequences, and each of the L sequences is of length L. Another exemplary method for wireless communication includes transmitting, by a network node, an indication of a first set of N sequences, and receiving a first spread signal comprising a group of N data symbols spread using the first set of N sequences.
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公开(公告)号：US11451276B2
公开(公告)日：2022-09-20
申请号：US16941377
申请日：2020-07-28
申请人： ZTE Corporation
发明人： Sha Wang , Yifei Yuan , Li Tian , Zhifeng Yuan , Wei Cao
IPC分类号： H04B7/0456 , H04L27/26 , H04W72/04
摘要： A method and apparatus for generating and utilizing spreading sequence codebooks for a symbol-level sequence spreading is disclosed. In one embodiment, a method performed by a wireless communication device, comprising: receiving a first number from a wireless communication node; selecting a first spreading sequence codebook from at least one spreading sequence codebook; selecting a first spreading sequence from the first spreading sequence codebook according to the first number; and spreading data symbols according to the first spreading sequence, wherein the at least one spreading sequence codebook each comprises a plurality of spreading sequences configured based on one entry of a first sequence set after cyclic shifting operation, wherein the first sequence set before cyclic shifting operation is configured based on a second sequence set.
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公开(公告)号：US11075668B2
公开(公告)日：2021-07-27
申请号：US17168615
申请日：2021-02-05
申请人： ZTE Corporation
发明人： Li Tian , Zhifeng Yuan , Ziyang Li , Yuzhou Hu , Jianqiang Dai , Chen Huang
摘要： According to various implementations, a device, such as a wireless communication device, carries out the following actions: for each element of a spreading sequence to be applied, determining, based on the element, whether to carry out randomization on a coded data stream, in which each element of the spreading sequence belongs to the set {1, −1, j, −j}; for each element of the spreading sequence for which randomization is determined to be applied, applying, based on the value of the element, one or more randomization techniques to the coded data stream; modulating the coded data stream; and transmitting the modulated data stream.
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公开(公告)号：US20210105830A1
公开(公告)日：2021-04-08
申请号：US17102300
申请日：2020-11-23
申请人： ZTE Corporation
发明人： Jianqiang Dai , Yuzhou Hu , Junfeng Zhang , Li Tian
摘要： Methods, systems, and devices related to digital wireless communication, and more specifically, to techniques related to generating a scrambled payload that distinguishes a wireless device using an initialization scrambling sequence. In one exemplary aspect, a method for wireless communication may include generating a scrambled payload, where the scrambled payload is generated using an initialization scrambling sequence that is at least partially based on a preamble index and includes a length of 31 bits. The method also may include transmitting a first message to a communication node during a random access procedure, the first message including the scrambled payload.
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公开(公告)号：US20200322994A1
公开(公告)日：2020-10-08
申请号：US16908525
申请日：2020-06-22
申请人： ZTE Corporation
发明人： Li Tian , Wei Cao , Sha Wang , Yifei Yuan , Zhifeng Yuan
摘要： Optimizing the resource configuration or selection for grant-free contention-based non-orthogonal multiple access (NOMA) transmissions is an effective way to increase network capacity and reduce multi-user interference at the user equipment (UE). In some embodiments, a network node may determine the current traffic load, select multiple access (MA) sequences for the UE based on the determination, and transmit this selection to the UE for subsequent transmissions. In other embodiments, the UE may receive a message with an indication of the traffic load being experienced by the base station that the UE is attempting to connect to, and then may randomly select an MA sequence for subsequent transmissions.
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公开(公告)号：US11510250B2
公开(公告)日：2022-11-22
申请号：US17102300
申请日：2020-11-23
申请人： ZTE Corporation
发明人： Jianqiang Dai , Yuzhou Hu , Junfeng Zhang , Li Tian
摘要： Methods, systems, and devices related to digital wireless communication, and more specifically, to techniques related to generating a scrambled payload that distinguishes a wireless device using an initialization scrambling sequence. In one exemplary aspect, a method for wireless communication may include generating a scrambled payload, where the scrambled payload is generated using an initialization scrambling sequence that is at least partially based on a preamble index and includes a length of 31 bits. The method also may include transmitting a first message to a communication node during a random access procedure, the first message including the scrambled payload.
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公开(公告)号：US11456819B2
公开(公告)日：2022-09-27
申请号：US17059098
申请日：2019-05-28
申请人： ZTE CORPORATION
发明人： Yuzhou Hu , Zhifeng Yuan , Weimin Li , Jianqiang Dai , Li Tian , Hong Tang
摘要： Provided are a partial pseudo-randomization processing method, a corresponding apparatus, a device and a storage medium. The method includes performing pseudo-randomization processing on part of N bits b1, b2, . . . , bN to generate new N bits d1, d2, . . . , dN; and encoding the d1, d2, . . . , dN.
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公开(公告)号：US20220039174A1
公开(公告)日：2022-02-03
申请号：US17504119
申请日：2021-10-18
申请人： ZTE Corporation
发明人： Jianqiang Dai , Li Tian
IPC分类号： H04W74/08
摘要： A random access procedure, performed by a network device, includes selecting one of a plurality of preamble indexes of a first resource, and at least one set of the plurality of preamble indexes is mapped to at least one second resource based on a first number of the at least one set of the plurality of preamble indexes and a second number of the at least one second resource. A first message is transmitted to a network node, the first message including a preamble at the selected preamble index of the first resource and a payload in the second resource associated to the selected preamble index. A second message is received from the network node in response to a first message.
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公开(公告)号：US11171734B2
公开(公告)日：2021-11-09
申请号：US16908609
申请日：2020-06-22
申请人： ZTE Corporation
发明人： Wei Cao , Li Tian , Yifei Yuan , Tao Lu
摘要： Methods, systems, and devices related to applying a spreading code to reference signals are described. In one exemplary aspect, a method for wireless communication includes receiving a message indicating a set of control options available to the mobile device for data transmissions. The method includes selecting a spreading code sequence from a number of spreading code sequences, wherein the spreading code sequence corresponds to a control option in the set of control options, wherein the number of spreading code sequences is greater than a length of each of the spreading code sequence, and wherein the spreading code sequences are generated using a method when the length of each of the spreading code sequences is greater than or equal to a value. The method also includes generating a plurality of reference signal symbols using the spreading code sequence, and transmitting the plurality of reference signal symbols.
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公开(公告)号：US20200287669A1
公开(公告)日：2020-09-10
申请号：US16882311
申请日：2020-05-22
申请人： ZTE Corporation
摘要： Reducing control signaling is an effective technique for increasing resource efficiency when supporting a massive number of connections in an Internet of Things framework. In the presence of sporadic and small data packets, the use of control signaling must be optimized to not overwhelm network resources. In some embodiments, a bit map in a control signaling packet may indicate if certain information elements that correspond to configuration parameters are present or absent. When they are absent, predetermined values for the corresponding configuration parameters may be used, whereas when they are present, predefined values from a set of predefined values may be used. In other embodiments, the predetermined values may be periodically updated.
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