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公开(公告)号：US09807800B2
公开(公告)日：2017-10-31
申请号：US14434248
申请日：2013-10-08
发明人： Feifei Sun , Yuanyuan Zhang , Chia-Chun Hsu , I-Kang Fu
CPC分类号： H04W74/0833 , H04W72/0413 , H04W72/14
摘要： This invention proposes efficient data transmission methods in the mobile cellular network. A specific resource pool is divided into several resource groups to indicate the size level of the data available for transmission. The base station allocates a proper UL grant to the terminal. Based on the allocated UL grant, the terminal compares the granted Transport Block (TB) size with the size of data available for transmission. If the UL grant is large enough, the terminal transmits the data available for transmission in the allocated UL resource, otherwise, re-attempts the random access procedure. In another example, the terminal transmits a BSR message and as much of the data as is available for transmission. The base station may grant additional UL resources if there is remaining data to be transmitted. A timer is used for the terminal to decide whether waiting for the additional UL grant from the base station.
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公开(公告)号：US10396934B2
公开(公告)日：2019-08-27
申请号：US15033900
申请日：2014-11-04
发明人： Feifei Sun , Xiangyang Zhuang , Hua-Min Chen
摘要： Apparatus and methods are provided to report channel status with transmission repetition. In one novel aspect, the mobile station computes a transmission efficiency for a transport block, which is repeatedly transmitted such that the transport block is received with a predefined receiving quality; determines a channel quality indicator based on the transmission efficiency and transmits it to a base station. In one embodiment, the transport block is repeatedly transmitted over multiple subframes. In another novel aspect, the mobile station computes a plurality of transmission efficiencies corresponding to a plurality of transport blocks, wherein at least one transport block is repeatedly transmitted such that each transport block is received with a pre-defined receiving quality. The mobile station determines one or more channel quality indicators based on the transmission efficiencies and transmits either the channel quality indicator with the highest efficiency or each channel quality indicator to a base station.
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公开(公告)号：US20180084526A1
公开(公告)日：2018-03-22
申请号：US15823958
申请日：2017-11-28
发明人： Yuanyuan Zhang , Yu-Syuan Jheng , Feifei Sun , Li Chen , I-Kang Fu
摘要： Methods and apparatus are provided for paging transmission and reception for UEs requiring coverage extension/coverage enhancement. In one novel aspect, the UE reports the CE status to the MME. CE level related information and the corresponding cell ID are provided from eNB to MME. MME sends paging information including the repetition number to all eNBs in the corresponding tracking area when paging the UE. In another novel aspect, a paging area is used for CE UEs. The UE receives paging area information, notifies the network, and updates the stored paging area information upon detecting changes between the received and the stored paging areas. In another embodiment, the UE reports its CE status upon detecting CE status changes. The eNB stores UE CE information and forwards it to neighboring eNBs in the same paging area. The eNB pages UEs on its CE UE list with repetition while paging other UEs normally.
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公开(公告)号：US09854560B2
公开(公告)日：2017-12-26
申请号：US15451581
申请日：2017-03-07
发明人： Yuanyuan Zhang , Yu-Syuan Jheng , Feifei Sun , Li Chen , I-Kang Fu
摘要： Methods and apparatus are provided for paging transmission and reception for UEs requiring repeatedly paging. In one novel aspect, the UE reports the status to the MME. UE status information and the corresponding cell ID are provided from eNB to MME. MME sends paging information including the repetition number to all eNBs in the corresponding tracking area when paging the UE. In another novel aspect, a paging area is used for UEs requiring repeatedly paging. The UE receives paging area information, notifies the network, and updates the stored paging area information upon detecting changes between the received and the stored paging areas. In another embodiment, the UE reports its status upon detecting status changes. The eNB stores UE information and forwards it to neighboring eNBs in the same paging area. The eNB pages UEs on its UE list with repetition while paging other UEs normally.
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公开(公告)号：US09713108B2
公开(公告)日：2017-07-18
申请号：US14511410
申请日：2014-10-10
发明人： Gilles Charbit , Feifei Sun
CPC分类号： H04W56/0015 , H04L7/027 , H04W4/70
摘要： A method of fast synchronization for low coverage machine type communication (MTC) devices is proposed. A machine-specific synchronization signal “mSYNC” with higher density in time and frequency is transmitted from each base station for fast timing and frequency acquisition and tracking. The mSYNC has a relatively longer periodicity (i.e., >>5 ms) to reduce overhead and inter-cell interference. The higher time-frequency density of mSYNC is designed to improve latency and power consumption by allowing the machine to wake up just before the scheduled mSYNC transmission time and to re-synchronize or track synchronization with the network without the need for long averaging time.
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公开(公告)号：US20160044633A1
公开(公告)日：2016-02-11
申请号：US14918773
申请日：2015-10-21
发明人： Yuanyuan Zhang , Yu-Syuan Jheng , Feifei Sun , Li Chen , I-Kang Fu
摘要： Methods and apparatus are provided for paging transmission and reception for UEs requiring coverage extension/coverage enhancement. In one novel aspect, the UE reports the CE status to the MME. CE level related information and the corresponding cell ID are provided from eNB to MME. MME sends paging information including the repetition number to all eNBs in the corresponding tracking area when paging the UE. In another novel aspect, a paging area is used for CE UEs. The UE receives paging area information, notifies the network, and updates the stored paging area information upon detecting changes between the received and the stored paging areas. In another embodiment, the UE reports its CE status upon detecting CE status changes. The eNB stores UE CE information and forwards it to neighboring eNBs in the same paging area. The eNB pages UEs on its CE UE list with repetition while paging other UEs normally.
摘要翻译： 提供了用于寻呼发送和接收的方法和装置，用于需要覆盖扩展/覆盖增强的UE。 在一个新颖的方面，UE向MME报告CE状态。 从eNB到MME提供CE级相关信息和相应的小区ID。 当寻呼UE时，MME向对应的跟踪区域中的所有eNB发送包括重复号码的寻呼信息。 在另一个新颖的方面，用于CE UE的寻呼区域。 UE接收到寻呼区域信息，通知网络，并且在检测到接收到的存储的寻呼区域之间的变化时更新存储的寻呼区域信息。 在另一实施例中，UE在检测到CE状态改变时报告其CE状态。 eNB存储UE CE信息，并将其转发到同一寻呼区域中的相邻eNB。 eNB在其UE UE列表上重复寻呼其他UE正常的UE。
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公开(公告)号：US10420105B2
公开(公告)日：2019-09-17
申请号：US15552976
申请日：2017-01-25
发明人： Feifei Sun
摘要： Methods and UE for receiving downlink channel signals are provided, wherein, a method for receiving DL channel signal, includes: a user equipment receives configuration information of a second system on a first system, wherein the time-frequency resource of the first system and the time-frequency resource of the second system are overlapped. the UE determines one or more time-frequency resources for receiving downlink signals. The UE receives the downlink signals at the time-frequency resources; and processes the downlink signals according to the configuration information of the second system. The method and equipment provided could be used for receiving methods and apparatus in a multiple-system co-existence system, and could enhance the system performance.
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公开(公告)号：US10411840B2
公开(公告)日：2019-09-10
申请号：US15176274
申请日：2016-06-08
发明人： Hua-Min Chen , Feifei Sun , Xiangyang Zhuang
摘要： Apparatus and methods are provided to enhance HARQ mechanism. In one novel aspect, the UE decodes resource blocks in a HARQ indicator channel and detects a single-state HARQ indicator encoded with a UE ID of the UE. The UE determines a HARQ acknowledgment status for the data transmission based on the HARQ indicator. In one embodiment, the HARQ indicator channel is either a UE-specific channel, a group-specific channel or a cell-specific channel. In another novel aspect, the UE increases a HARQ count upon decoding the HARQ indicator channel. The UE retransmits the data transmission if the HARQ count is smaller than a predefined maximum HARQ count and the HARQ acknowledgement status is determined to be negative. Otherwise, the UE stops the data transmission. In another embodiment, the UE terminates the data transmission is the total repetition number is greater than a predefined maximum data transmission number.
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公开(公告)号：US10299093B2
公开(公告)日：2019-05-21
申请号：US15358034
申请日：2016-11-21
发明人： Hua-Min Chen , Feifei Sun
摘要： Methods and apparatus for obtaining a response message for CB access uplink transmission are disclosed. In one novel aspect, UE performs a CB access uplink transmission, selects a first group of radio resources for one or more candidate control-less response message blocks with corresponding transmission repetition number, retrieves and decodes one candidate response message block corresponds to one sub-group of resources in the first group of radio resources and determines if the candidate response message is intended for the UE. In one embodiment, the UE obtains the candidate response message by determining one or more repetition number and obtaining corresponding sub-group of resources from the starting point(s). In another embodiment, the UE determines one or more frequency locations to obtain the candidate response message. In yet another embodiment, the UE selects a second group of radio resources if no response message is detected within the first group of radio resources.
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公开(公告)号：US09936518B2
公开(公告)日：2018-04-03
申请号：US14758894
申请日：2014-01-14
发明人： Feifei Sun , Xiangyang Zhuang , Pei-Kai Liao
CPC分类号： H04W72/1289 , H04L1/0046 , H04L1/1861 , H04L5/0001 , H04L5/0053 , H04W72/042 , H04W88/02
摘要： A method for transport block transmission and blind reception is disclosed. The method is used in an UE and includes: receiving multiple candidate transport blocks, wherein each candidate transport block occupies a set of radio resources; and decoding the candidate transport blocks according to pre-defined encoding information to detect a potential transport block intended for the UE.
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