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公开(公告)号：US11637680B2
公开(公告)日：2023-04-25
申请号：US16975095
申请日：2019-02-25
发明人： Yi-Pin Eric Wang , Gerardo Agni Medina Acosta , Johan Bergman , Olof Liberg , Kazuyoshi Uesaka , Yutao Sui , Talha Khan
摘要： Methods and apparatuses are disclosed for communicating to a wireless device (WD) a DL-to-UL frequency offset (or frequency shift) that may need to be applied. For example, a method implemented in a wireless device (WD) is provided. The method comprises: receiving, from the network node, an indication of a frequency offset; and applying the received frequency offset; wherein the WD is configured to operate on a narrow-band Internet of Things (NB-IoT) carrier in a New Radio (NR) carrier.
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公开(公告)号：US11621878B2
公开(公告)日：2023-04-04
申请号：US16462105
申请日：2019-05-02
发明人： Olof Liberg , David Sugirtharaj , Yi-Pin Eric Wang
摘要： A method performed by a network node in a wireless communications system is disclosed. The method comprises generating a time-continuous baseband signal by applying a phase compensation that removes a physical resource block (PRB)-dependent phase rotation on a subcarrier. The method comprises converting the generated time-continuous baseband signal into a radio frequency signal. The method comprises transmitting the radio frequency signal to a wireless device over a radio interface.
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公开(公告)号：US11611919B2
公开(公告)日：2023-03-21
申请号：US17278748
申请日：2019-09-24
发明人： Olof Liberg , Yutao Sui , Yi-Pin Eric Wang
IPC分类号： H04W36/00 , H04B17/318 , H04W36/08 , H04W36/30
摘要： According to an aspect, a wireless device (50) performs idle mode radio resource management, RRM, measurements in a wireless network comprising a first carrier that supports a broadcast of system information, provides radio resources for paging and random access, and supports idle-mode measurements and further comprises a second carrier, distinct from the first carrier, that also provides radio resources for paging and random access. The wireless device (50) performs (502) at least one of a signal strength measurement and quality measurement on each of the first and second carriers, the first carrier being an anchor carrier for the wireless device and the second carrier being a non-anchor carrier. Based on the at least one measurement for each of the respective carriers, the wireless device (50) determines (504) whether to perform idle-mode RRM measurements on the second, non-anchor, carrier.
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公开(公告)号：US11497022B2
公开(公告)日：2022-11-08
申请号：US16275866
申请日：2019-02-14
发明人： Hazhir Shokri Razaghi , Ansuman Adhikary , Johan Bergman , Yufei Blankenship , Asbjörn Grövlen , Xingqin Lin , Yutao Sui , Yi-Pin Eric Wang
摘要： A method in a network node includes communicating, over a narrowband Internet of Things downlink, a first message to a first wireless device during repetition periods of at least a first time frame and a second time frame of a plurality of time frames of a transmission time of a narrowband physical downlink control channel (NB-PDCCH) or a narrowband physical downlink shared channel (NB-PDSCH). Each time frame of the plurality of time frames includes a repetition period and a gap. The method also includes communicating a second message to a second wireless device during a gap of the first time frame.
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公开(公告)号：US11374730B2
公开(公告)日：2022-06-28
申请号：US16766208
申请日：2018-11-23
发明人： Olof Liberg , Joakim Axmon , Mats Folke , Andreas Höglund , Yutao Sui , Martin Van Der Zee , Yi-Pin Eric Wang
摘要： According to certain embodiments, a method (500) by a wireless device (110) includes receiving information relating to a Narrowband Secondary Synchronization Signal (NSSS) transmit diversity scheme. The information indicates a number of NSSS occasions that use different NSSS transmit diversity configurations. Based on the NSSS transmit diversity scheme, at least one measurement is performed across NSSS occasions.
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公开(公告)号：US20220182195A1
公开(公告)日：2022-06-09
申请号：US17677543
申请日：2022-02-22
摘要： A base station and wireless device are configured to support TDD operation. In exemplary embodiments, the base station or UE can make use of the available symbols in the DwPTS or UpPTS of a special subframe respectively for NB-IoT transmissions. In one example, the base station can use OFDM symbols in the DwPTS to repeat in a predetermined manner some of the symbols transmitted in an immediately preceding downlink subframe, or in a succeeding downlink subframe. In other embodiments, the UE can use symbols in the UpPTS to repeat in a predetermined manner some of the symbols transmitted in the immediately succeeding uplink subframe, or in a preceding uplink subframe. The symbols repeated in the special subframe can be coherently combined at the receiver with corresponding symbols transmitted in a downlink or uplink subframe to improve decoding performance, reduce errors, improve channel estimation, and increase system capacity.
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公开(公告)号：US20220166569A1
公开(公告)日：2022-05-26
申请号：US17442773
申请日：2020-03-26
发明人： Xingqin Lin , Stefan Parkvall , Yi-Pin Eric Wang
IPC分类号： H04L5/00
摘要： A network node configured to, and/or comprising a radio interface and/or comprising processing circuitry configured to transmit a synchronization block mapped to four OFDM symbols in the time domain and 144 contiguous subcarriers in the frequency domain is provided. Optionally, a first of the four OFDM symbol is used by a primary synchronization signal, PSS. Optionally, a third of the four OFDM symbols is used by a secondary synchronization signal, SSS. Optionally, a second and a fourth of the OFDM symbols are used by a Physical Broadcast Channel, PBCH, in 12 contiguous resource blocks, RBs. Optionally, within each of the resource block RB in an OFDM symbol used by PBCH, there are 12 resource elements, and, optionally, 3 of the 12 resource elements are used for a downlink modulation reference signal, DMRS.
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公开(公告)号：US20220103410A1
公开(公告)日：2022-03-31
申请号：US17428595
申请日：2020-02-04
摘要： A network device transmits or receives using an LTE-M carrier with guard bands within the bandwidth of an NR carrier, wherein the subcarriers in the LTE-M carrier maximally align with subcarriers in NR. The center of the LTE-M carrier is located within the NR bandwidth such that: 1) a minimum number of NR resource blocks are occupied by any part of the LTE-M carrier and the guard bands at each end, given a predetermined bandwidth for each of the guard bands; and/or 2) given a predetermined number of NR resource blocks that can be occupied by any part of the LTE-M carrier and the guard bands at each end, a minimum guard band bandwidth from each end of the LTE-M carrier to the respective immediately adjacent NR resource block not occupied by any of part of the LTE-M carrier and the guard bands is maximized.
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公开(公告)号：US20220085961A1
公开(公告)日：2022-03-17
申请号：US17536743
申请日：2021-11-29
发明人： Robert Baldemair , Johan Bergman , Erik Dahlman , Olof Liberg , Stefan Parkvall , Yi-Pin Eric Wang
摘要： Embodiments herein disclose e.g. a method performed by a wireless device (10) for handling communication for the wireless device in a second wireless communication network. The second wireless communication network coexists with a first wireless communication network on a same bandwidth in frequency, wherein the first wireless communication network applies a first shift in frequency in uplink transmissions. The wireless device receives from a radio network node (12,13), an indication indicating application of a second shift in frequency to uplink transmissions in case the second wireless communication network uses Frequency Division Duplex (FDD). The wireless device further applies the second shift in frequency to uplink transmissions, wherein the second shift defines a shift in frequency to a subcarrier relative to a subcarrier grid of the second wireless communication network or a shift in frequency to the subcarrier grid of the second wireless communication network.
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公开(公告)号：US11218281B2
公开(公告)日：2022-01-04
申请号：US16496133
申请日：2018-03-23
发明人： Robert Baldemair , Johan Bergman , Erik Dahlman , Olof Liberg , Stefan Parkvall , Yi-Pin Eric Wang
摘要： Embodiments herein disclose e.g. a method performed by a wireless device (10) for handling communication for the wireless device in a second wireless communication network. The second wireless communication network coexists with a first wireless communication network on a same bandwidth in frequency, wherein the first wireless communication network applies a first shift in frequency in uplink transmissions. The wireless device receives from a radio network node (12,13), an indication indicating application of a second shift in frequency to uplink transmissions in case the second wireless communication network uses Frequency Division Duplex (FDD). The wireless device further applies the second shift in frequency to uplink transmissions, wherein the second shift defines a shift in frequency to a subcarrier relative to a subcarrier grid of the second wireless communication network or a shift in frequency to the subcarrier grid of the second wireless communication network.
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