公开(公告)号：US20200028639A1

公开(公告)日：2020-01-23

申请号：US16086900

申请日：2016-03-23

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Fredrik LINDQVIST ,  Per-Erik ERIKSSON

IPC分类号： H04L5/00 ,  H04L1/00 ,  H04W88/08 ,  H04W28/22

摘要： A method is disclosed performed by a base unit (230), of a base station system (200) of a wireless communication network. The base station system further comprises a remote unit (220) connected via a wired transmission line (225) to the base unit (230), the remote unit (220) being arranged for transmitting signals wirelessly to a wireless communication device (240). The method comprises modulating received Media Access Control, MAC, data packets onto a plurality of sub-frequency bands of a frequency band of the transmission line, and transmitting, to the remote unit, the modulated MAC data packets over the transmission line. Further, a corresponding method performed by a remote unit is disclosed.

公开(公告)号：US20180092025A1

公开(公告)日：2018-03-29

申请号：US15566104

申请日：2015-04-16

申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

发明人： Göran SELANDER ,  Elena DUBROVA ,  Fredrik LINDQVIST ,  Mats NÄSLUND

IPC分类号： H04W48/06 ,  H04W12/08 ,  H04W74/08 ,  H04L29/06 ,  H04W12/04

摘要： The disclosure relates to a method (30) for a network node (6, 7, 8) of a wireless network (1) of providing a device (5, 9) access to the wireless network (1). The method (30) comprises receiving (31), from a device (5, 9), an access request comprising a preamble; establishing (32), in response to the access request, a computational puzzle based on the received preamble; and sending (33) the computational puzzle to the device (5, 9). A corresponding method in a device is also disclosed, as are a network node (6, 7, 8), device (5, 9), computer programs and computer program products.

公开(公告)号：US20200045689A1

公开(公告)日：2020-02-06

申请号：US16339997

申请日：2017-08-11

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Robert BALDEMAIR ,  Daniel CHEN LARSSON ,  Sorour FALAHATI ,  Fredrik LINDQVIST

IPC分类号： H04W72/04 ,  H04L1/00

摘要： There is disclosed a method of operating a user equipment in a radio access network. The method includes transmitting feedback control signaling, the feedback control signaling representing a number I of information bits, the I information bits being encoded with a code rate based on a code rate indication. The disclosure also pertains to related devices and methods.

公开(公告)号：US20190215826A1

公开(公告)日：2019-07-11

申请号：US16356603

申请日：2019-03-18

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Robert BALDEMAIR ,  Daniel CHEN LARSSON ,  Sorour FALAHATI ,  Fredrik LINDQVIST

IPC分类号： H04W72/04 ,  H04L5/00 ,  H04W72/12

摘要： There is disclosed a method of operating a user equipment in a radio access network. The method includes transmitting feedback control signaling, the feedback control signaling representing a number I of information bits. The I information bits are encoded with a code rate based on a code rate indication. The disclosure also pertains to related devices and methods.

公开(公告)号：US20170244564A1

公开(公告)日：2017-08-24

申请号：US15504604

申请日：2014-08-19

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Mats NÄSLUND ,  Elena DUBROVA ,  Fredrik LINDQVIST ,  Göran SELANDER

IPC分类号： H04L9/32 ,  H04L9/06

CPC分类号： H04L9/3242 ,  G06F7/724 ,  H04L1/0061 ,  H04L9/0643 ,  H04L2209/34

摘要： A method (500) of generating a cryptographic checksum for a message M(x) is provided. The method comprises pseudo-randomly selecting (502) at least two irreducible polynomials pi(x). Each irreducible polynomial pi(x) is selected based on a first cryptographic key from the set of irreducible polynomials of degree ni over a Galois Field. The method further comprises calculating (503) a generator polynomial p(x) of degree n=formula (I) as a product of the N irreducible polynomials formula (II), and calculating (505) the cryptographic checksum as a first function g of a division of a second function of M(x), ƒ(M(x)), modulo p(x), i.e., g(ƒ(M(x)) mod p(x)). By replacing a standard checksum, such as a Cyclic Redundancy Check (CRC), with a cryptographic checksum, an efficient message authentication is provided. The proposed cryptographic checksum may be used for providing integrity assurance on the message, i.e., for detecting random and intentional message changes, with a known level of security. Further, a corresponding computer program, a corresponding computer program product, and a checksum generator for generating a cryptographic checksum, are provided. Σ i = 1 N  n i ( I ) p i  ( x ) , p  ( x ) = Π i = 1 N  p i  ( x ) , ( II )

公开(公告)号：US20170141918A1

公开(公告)日：2017-05-18

申请号：US15319465

申请日：2014-06-27

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Elena DUBROVA ,  Fredrik LINDQVIST ,  Mats NÄSLUND ,  Göran SELANDER

IPC分类号： H04L9/30 ,  H04L9/14 ,  H04L1/00 ,  H04L29/06 ,  H04W12/04 ,  H04L9/06 ,  H04L9/32

CPC分类号： H04L9/3093 ,  H04L1/0061 ,  H04L9/0643 ,  H04L9/14 ,  H04L9/3242 ,  H04L63/06 ,  H04L2209/34 ,  H04L2209/80 ,  H04W12/04

摘要： A method (500) of generating a cryptographic checksum for a message M(x) is provided. The method comprises pseudo-randomly selecting (502) a generator polynomial p(x) from the set of polynomials of degree n over a Galois Field and calculating (504) the cryptographic checksum as a first function g of a division of a second function of M(x), ƒ(M(x)), modulo p(x), g(ƒ(M(x))mod p(x)). The generator polynomial p(x) is pseudo-randomly selected based on a first cryptographic key. By replacing a standard checksum, such as a Cyclic Redundancy Check (CRC), with a cryptographic checksum, an efficient message authentication is provided. The proposed cryptographic checksum may be used for providing integrity assurance on the message, i.e., for detecting random and intentional message changes, with a known level of security. Further, a corresponding computer program, a corresponding computer program product, and a checksum generator for generating a cryptographic checksum, are provided.