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61. 发明授权

US11234195B2 Radio communications 有权
公开(公告)号：US11234195B2
公开(公告)日：2022-01-25
申请号：US16955687
申请日：2018-12-20
申请人： Nordic Semiconductor ASA
发明人： Kjell Östman , Hannu Talvitie , Yrjö Kaipainen , Juha Heikkilä , Olli Närhi
IPC分类号： H04W52/02 , G01S19/34
摘要： A radio transceiver comprises one or more hardware resources, e.g. a processor; memory; a peripheral device; an algorithmic hardware accelerator; and/or a radio frequency component. A cellular communication radio is operable in an active mode in which it has access to the one or more hardware resources for transmitting and/or receiving cellular communication signals, and an inactive mode in which it does not. A global navigation satellite systems radio, arranged to use the one or more hardware resources to receive positioning signals, has access to the one or more hardware resources only when the cellular communication radio is operated in the inactive mode.

62. 发明授权

US11228471B2 Matched-filter radio receiver 有权
公开(公告)号：US11228471B2
公开(公告)日：2022-01-18
申请号：US16957946
申请日：2019-01-03
申请人： Nordic Semiconductor ASA
发明人： Wei Li , Daniel Ryan
IPC分类号： H04L27/00 , H04L27/233 , H04B1/12 , H04L27/148
摘要： A digital radio receiver has a matched filter bank of filter modules for receiving phase- or frequency-modulated radio signals. Each module cross-correlates a sampled signal with a respective multi-symbol filter sequence, using a plurality of samples in each symbol period. The matched filter bank calculates first values (zn(1)), for respective symbol periods, of a cross-correlation of the sampled signal with a first complex exponential function defined at sample points over one symbol period, and calculates second values (zn(−1)), for the respective symbol periods, of a cross-correlation of the sampled signal with a second, different, complex exponential function. A set of the filter modules cross-correlates the sampled signal with their respective filter sequences using an algorithm that takes, as input, the first values (zn(1)) for symbol periods at which the respective filter sequence has a first value, and the second values (zn(−1)) for symbol periods at which the filter sequence has a second, different, value.

63. 发明申请

US20210344728A1 RADIO COMMUNICATION 有权
公开(公告)号：US20210344728A1
公开(公告)日：2021-11-04
申请号：US17272134
申请日：2019-08-27
申请人： Nordic Semiconductor ASA
发明人： Jukka LUIPPUNEN , Tuomo KUMENTO , Jouni KORHONEN , Veli-Pekka JUNTTILA
IPC分类号： H04L29/06 , H04W4/20 , H04W76/10
摘要： A method of communication over a cellular telecommunications network using an electronic device comprises communicating a session control signal between the electronic device and the cellular telecommunications network on a first radio channel provided by the cellular telecommunications network. The session control signal comprises identification data that identifies a remote party. The cellular telecommunications network uses the identification data to establish an IP-based communication session with the remote party. Content data for the IP-based communication session is communicated between the electronic device and the cellular telecommunications network on a second radio channel provided by the cellular telecommunications network.

64. 发明申请

US20210266899A1 CALIBRATION OF A SYNTHESISER IN A RADIO RECEIVER 有权
公开(公告)号：US20210266899A1
公开(公告)日：2021-08-26
申请号：US17255860
申请日：2019-06-20
申请人： Nordic Semiconductor ASA
发明人： Kjell ÖSTMAN , Mika SALMI , Tommi KANGASSUO
IPC分类号： H04W72/04 , H04L7/033 , H04L5/00 , H04B1/7136
摘要： A method of operating a radio receiver arranged to receive a plurality of data symbols transmitted on one of a predetermined set of frequencies. The method comprises receiving a first set of data symbols at a first transmission frequency. The first set of data symbols comprises a message indicating a first frequency sub-set. A synthesiser is calibrated for the one or more frequencies in the first frequency sub-set. A second set of data symbols transmitted on at least one of said one or more frequencies from the first sub-set is received. It is determined from the second set of data symbols whether a network quality metric exceeds a threshold. The synthesiser is calibrated for one or more frequencies in a second frequency sub-set when the network quality metric exceeds the threshold. The second sub-set comprises frequencies that are not in the first sub-set.

65. 发明申请

US20210266197A1 OFDM CHANNEL ESTIMATION 有权
公开(公告)号：US20210266197A1
公开(公告)日：2021-08-26
申请号：US17255368
申请日：2019-06-26
申请人： Nordic Semiconductor ASA
发明人： Kjell ÖSTMAN
IPC分类号： H04L25/02 , H04L5/00
摘要： A radio receiver tunes a radio channel by generating a periodic signal, mixing the periodic signal with received radio signals and passing the mixed signal through a channel filter that has a passband that corresponds to the bandwidth of the tuned channel. The receiver receives allocation information identifying a set of subcarriers in the tuned channel on which to receive an OFDM data signal. It uses this information to receive the OFDM data, modulated on the allocated subcarriers. When the allocated subcarriers span an allocated frequency range that is less than the width of the tuned channel and that is offset from the centre of the tuned channel in an offset direction, the receiver offsets the channel filter from the centre of the tuned channel in the offset direction such that the channel filter passes i) said OFDM data signal, ii) an in-allocation reference signal, and iii) an out-of-channel reference signal. The receiver uses both reference signals to calculate a channel estimate for a subcarrier within the tuned channel.

66. 发明授权

US11089510B2 Generating radio data-channel access addresses from a base address seed 有权
公开(公告)号：US11089510B2
公开(公告)日：2021-08-10
申请号：US16635491
申请日：2018-07-27
申请人： Nordic Semiconductor ASA
发明人： Daniel Ryan
IPC分类号： H04W28/06 , H04W4/80 , H04L12/741
摘要： A radio communication apparatus receives or generates a base address seed, and generates data-channel access addresses from the seed. Each access address corresponds to a respective data-channel identifier, and is generated by setting a bit at a common first bit position to the value of a bit at a first common predetermined bit position in the base address seed or in the respective data-channel identifier; by setting a bit at a common second bit position to the bitwise complement of this value; and by setting one or more remaining bit positions in dependence on values at one or more bit positions in the base address seed and one or more bit positions in the respective data-channel identifier that are not the first common predetermined bit position. The apparatus can send or receive a radio data packet comprising an access address from the generated set.

67. 发明授权

US11070246B2 Digital radio communication 有权
公开(公告)号：US11070246B2
公开(公告)日：2021-07-20
申请号：US16466624
申请日：2017-12-01
申请人： Nordic Semiconductor ASA
发明人： Wei Li
IPC分类号： H04B1/7075 , H04B17/20 , H04B1/16
摘要： A method of operating a digital radio receiver comprising: receiving a radio signal; passing said radio signal to a correlator for correlating said radio signal with a predetermined pattern to provide an output signal comprising a plurality of peaks separated in time; determining an amplitude of a first peak in the plurality of peaks; calculating a selection threshold based on said first peak amplitude; determining an amplitude of a second peak in the plurality of peaks; comparing said second peak amplitude to the selection threshold; and identifying the second peak as a correlation peak if the second peak amplitude is greater than the selection threshold.

68. 发明申请

US20210218545A1 PROTECTING CRYPTOGRAPHIC KEY DATA 有权
公开(公告)号：US20210218545A1
公开(公告)日：2021-07-15
申请号：US16968121
申请日：2019-02-14
申请人： Nordic Semiconductor ASA
发明人： Kauko KUTTI , Jarmo VEIKKOLA , Marko WINBLAD
IPC分类号： H04L9/00 , H04L9/06 , H04L9/08
摘要： A cryptographic module is switchable between a key-input mode and a data-input mode. In the key-input mode, the cryptographic module receives key data, key length information and first input data, combines an amount of the key data corresponding to the key length information with the first input data to produce combined data, wherein a key-influenced length of the combined data is the shortest length of the combined data that contains every data bit of the combined data whose value depends on the key data. It performs a cryptographic operation on the combined data to generate first output data and does not output any of the first output data until after the cryptographic operation has been applied to all of the key-influenced length of the combined data. In the data-input mode of operation, the cryptographic module receives a quantity of second input data whose length can be less than said key-influenced length, performs the cryptographic operation on the second input data to generate second output data and outputs the second output data.

69. 发明申请

US20210216482A1 DIRECT MEMORY ACCESS CONTROLLER 有权
公开(公告)号：US20210216482A1
公开(公告)日：2021-07-15
申请号：US17059391
申请日：2019-05-28
申请人： Nordic Semiconductor ASA
发明人： Marko WINBLAD , Markku VÄHÄTAINI , James NEVALA , Matti TIIKKAINEN , Hannu TALVITIE
IPC分类号： G06F13/28
摘要： An electronic apparatus has a processor; a peripheral having a data interface and a data-attribute interface; a direct memory access (DMA) controller for the peripheral; a memory; a bus system connecting the processor, the DMA controller, and the memory; a data link between the DMA controller and the peripheral; and a data-attribute link between the DMA controller and the peripheral, separate from the data link. The DMA controller has data-transfer circuitry for transferring data between the memory and the data interface of the peripheral over the data link, and for transferring data-attribute information, associated with the data, between the memory and the data-attribute interface of the peripheral over the data-attribute link.

70. 发明申请

US20210185627A1 RADIO COMMUNICATIONS 有权
公开(公告)号：US20210185627A1
公开(公告)日：2021-06-17
申请号：US16771652
申请日：2018-12-11
申请人： Nordic Semiconductor ASA
发明人： Ilari KUKKULA , Tapani JAAKOLA
IPC分类号： H04W56/00 , H04L12/841 , H04L12/911
摘要： A radio receiver device is arranged to store samples of incoming data symbols in an indexed memory portion having a length of A+B+C. A first data buffer 20-1 has an initial address at index 0 and a final address at index A-1. A timing adjustment buffer 22 has an initial address at index A and a final address at index A+B−1. A second data buffer 20-2 has an initial address at an index A+B and a final address at an index A+B+C−1. A buffer switch pointer 24 has a trigger address between the index 0 and the index A+B−1, at which it triggers a switch 26 from the first to the second buffer. If the current address matches the trigger address, the current address is set to the index A+B. Otherwise, the current address is incremented. If there is a timing offset between local and network clocks, the trigger address is moved to reduce the offset.

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