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公开(公告)号：US11438882B2
公开(公告)日：2022-09-06
申请号：US16872135
申请日：2020-05-11
摘要： A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
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公开(公告)号：US20210037491A1
公开(公告)日：2021-02-04
申请号：US17072232
申请日：2020-10-16
发明人： Timothy M. Schmidl , Anuj Batra , Srinath Hosur
摘要： A method includes receiving a first plurality of symbols comprising complex portions. The method further includes applying conjugate symmetry to the first plurality of symbols, producing a second plurality of symbols comprising no complex portions. The method further includes transforming the second plurality of symbols using an inverse fast Fourier transform, producing a third plurality of symbols. The method further includes interpolating the third plurality of symbols, generating a short training field comprising at least one real portion of the third plurality of symbols, generating a long training field comprising at least one real portion of the third plurality of symbols, and transmitting the short training field and long training field in a WPAN.
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3.发明授权公开(公告)号：US10770971B2
公开(公告)日：2020-09-08
申请号：US16428525
申请日：2019-05-31
发明人： Gary Franklin Chard , Ariel Dario Moctezuma , Hasibur Rahman , Alex Kwasi Nyavor Titriku , Srinath Hosur
摘要： A system includes an inductor and a first switch coupled between a first end of the inductor and a voltage supply node. The system also includes a second switch coupled between the first end of the inductor and a negative output supply node. The system also includes a third switch coupled between a second end of the inductor and a positive output supply node. The system also includes a fourth switch coupled between the second end of the inductor and a ground node. The system also includes a controller coupled to the first, second, third, and fourth switches. The controller is configured to provide an inductor charge mode, a positive boost mode, a negative boost mode, a first rest state involving the first switch, and a second rest state involving the fourth switch.
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公开(公告)号：US20200077418A1
公开(公告)日：2020-03-05
申请号：US16679929
申请日：2019-11-11
发明人： Ariton E. Xhafa , Soon-Hyeok Choi , Srinath Hosur , Yanjun Sun
摘要： A method for communicating in a wireless sensor network (WSN) is described. Using control logic, a first wireless transceiver is caused to transmit a wireless packet to a node in a wireless sensor network. The control logic bases its causing on a transmission coinciding with a break in transmission for a second wireless network, such that the transmission from the first wireless transceiver does not coincide with transmissions made on the second wireless network. Time synchronized channel hopping (TSCH) slot frames for wireless packet transmission in the wireless sensor network are caused to be time offset if the first wireless transceiver is utilizing TSCH. Wake up sequence transmissions for the wireless sensor network are caused to be time offset if the first wireless transceiver is utilizing coordinated sampled listening (CSL).
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公开(公告)号：US10292030B2
公开(公告)日：2019-05-14
申请号：US15786823
申请日：2017-10-18
发明人： Anuj Batra , Timothy M. Schmidl , Srinath Hosur , June Chul Roh
IPC分类号： H04W4/00 , H04W4/80 , H04L27/18 , H04L27/20 , H04L29/06 , H04L27/26 , H04W52/36 , H04W72/04 , H04W74/08
摘要： In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment using M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK. Also, the PHY layer uses a constant symbol rate for BAN packet transmissions.
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公开(公告)号：US20190053224A1
公开(公告)日：2019-02-14
申请号：US16156153
申请日：2018-10-10
摘要： A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
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公开(公告)号：US10015810B2
公开(公告)日：2018-07-03
申请号：US14920625
申请日：2015-10-22
发明人： Ariton E. Xhafa , Soon-Hyeok Choi , Srinath Hosur , Yanjun Sun
CPC分类号： H04W72/1215 , H04W4/80 , H04W84/12 , H04W84/18 , H04W88/06
摘要： A method for communicating in a wireless sensor network (WSN) is described. Using control logic, a first wireless transceiver is caused to transmit a wireless packet to a node in a wireless sensor network. The control logic bases its causing on a transmission coinciding with a break in transmission for a second wireless network, such that the transmission from the first wireless transceiver does not coincide with transmissions made on the second wireless network. Time synchronized channel hopping (TSCH) slot frames for wireless packet transmission in the wireless sensor network are caused to be time offset if the first wireless transceiver is utilizing TSCH. Wake up sequence transmissions for the wireless sensor network are caused to be time offset if the first wireless transceiver is utilizing coordinated sampled listening (CSL).
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公开(公告)号：US09510139B2
公开(公告)日：2016-11-29
申请号：US14824705
申请日：2015-08-12
发明人： Anuj Batra , Timothy M. Schmidl , Srinath Hosur , June Chul Roh
CPC分类号： H04W4/80 , H04L27/18 , H04L27/20 , H04L27/2675 , H04L69/22 , H04W52/36 , H04W52/367 , H04W72/0453 , H04W74/0816
摘要： In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment using M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK. Also, the PHY layer uses a constant symbol rate for BAN packet transmissions.
摘要翻译： 在至少一些实施例中，通信设备包括具有物理（PHY）层的收发器。 PHY层被配置为使用M-ary PSK，差分M-ary PSK或旋转差分M-ary PSK的有限多径环境中的身体局域网（BAN）操作。 此外，PHY层对于BAN分组传输使用恒定的符号率。
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公开(公告)号：US09467164B2
公开(公告)日：2016-10-11
申请号：US14503513
申请日：2014-10-01
CPC分类号： H03M5/18 , H03M13/13 , H03M13/152 , H03M13/251 , H03M13/255 , H03M13/2792 , H04L1/0041 , H04L1/0058 , H04L25/4917 , H04L27/36 , H04L27/364
摘要： A method includes simulating transmission of multiple symbols representing multiple bits over at least one communication channel, where the multiple symbols are associated with a polar code. The method also includes identifying error rates of equivalent bit channels associated with the simulated transmission of the symbols. The method further includes selecting a specified number of the bits as frozen bits in the polar code using the identified error rates. Simulating the transmission of the symbols could include computing log likelihood ratio (LLR) values associated with the equivalent bit channels and simulating polar decoding of received symbols using the LLR values. Identifying the error rates could include calculating means and variances of the LLR values associated with the equivalent bit channels and identifying probability density functions of the LLR values using the means and variances. The selected bits could represent the specified number of bits identified as having worst error rates.
摘要翻译： 一种方法包括模拟通过至少一个通信信道表示多个比特的多个符号的传输，其中多个符号与极性码相关联。 该方法还包括识别与符号的模拟传输相关联的等效比特信道的错误率。 该方法还包括使用所识别的错误率在极性码中选择指定数目的比特作为冻结比特。 模拟符号的传输可以包括与等效比特信道相关联的计算对数似然比（LLR）值，并且使用LLR值来模拟接收符号的极性解码。 识别错误率可以包括与等效位信道相关联的LLR值的计算方法和方差，并使用均值和方差来识别LLR值的概率密度函数。 所选择的比特可以表示指定的具有最差错误率的比特数。
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公开(公告)号：US09419750B2
公开(公告)日：2016-08-16
申请号：US14297164
申请日：2014-06-05
CPC分类号： H04W72/0413 , H03M13/1515 , H03M13/2966 , H03M13/611 , H03M13/618 , H03M13/635 , H04H20/38 , H04L1/0041 , H04L1/0057 , H04L1/0061 , H04L1/0064 , H04L1/0071 , H04L1/0076 , H04L1/1812 , H04W72/0446
摘要： A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
摘要翻译： 一种在无线接入网络中的无线回程远程单元处的上行链路（UL）无线回程通信的方法，包括通过下行链路（DL）物理层广播信道接收无线电帧的配置和传输调度，其中所述传输调度包括传输 生成UL数据帧的UL数据帧的生成包括对数据比特流执行前向纠错（FEC）编码以生成多个FEC码字，其中执行FEC编码包括执行Reed Solomon（ RS）编码以产生多个RS码字，在RS码字上执行字节交织，并对字节交织的RS码字执行Turbo编码，以生成一个或多个Turbo码字，其中每个Turbo码字从更多的编码 而不是一个RS码字，并且根据传输分配来发送UL数据帧。
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