# US 10,321,326 B2 · Information transmission method, device, and system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,321,326 B2 - Document ID: US10321326B2 - Status: Granted - Kind: B2 - Application number: 15/545,150 - Filed: 2015-01-20 - Published: 2018-01-11 - Granted: 2019-06-11 - Earliest claimed: 2015-01-20 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Jian Wang - Web page: https://patentgrep.com/patent/US10321326B2 ## CPC - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04J 13/10: Code generation - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 16/10: Dynamic resource partitioning - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/1263: Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The present disclosure provides an information transmission method, a device, and a system, and relates to the communications field, so as to resolve a prior-art problem that when an unlicensed spectrum is preempted to send data, a receive end cannot obtain a correct time resource sequence number, and cannot descramble information. A first device scrambles, according to a first scrambling code sequence, first data carried on a first time resource on an unlicensed carrier, where the first data is data that is sent by the first device to a second device, and the first scrambling code sequence is generated according to a sequence number of a second time resource on a licensed carrier or a first value; and the first device sends scrambled first data to the second device. ## Claims ### Claim 1 An information transmission method, comprising: scrambling, by a first device according to a first scrambling code sequence, first data carried on a first time resource on an unlicensed carrier, wherein the first data is data that is sent by the first device to a second device, and the first scrambling code sequence is generated according to a sequence number of a second time resource on a licensed carrier or a first value; and sending, by the first device, scrambled first data to the second device; wherein the first time resource is a first timeslot, wherein the first timeslot belongs to a first subframe, and the first subframe comprises N orthogonal frequency division multiplexing (OFDM) symbols; when N is greater than M/2, the first timeslot comprises first N−M/2 OFDM symbols of the N OFDM symbols; wherein M is a quantity of OFDM symbols comprised in one complete subframe, M and N are positive integers, and M≥N. ### Claim 2 (depends on 1) The method according to claim 1, wherein: a time domain resource of the second time resource comprises a time domain resource of the first time resource. ### Claim 3 (depends on 2) The method according to claim 2, wherein: the time domain resource of the second time resource is the same as that of the first time resource. ### Claim 4 (depends on 1) The method according to claim 1, wherein: the first value is: a preset value, or a value determined by the first device, or a value determined by a third party. ### Claim 5 (depends on 4) The method according to claim 4, wherein the first value is the value determined by the first device, and the method further comprises: sending, by the first device, the first value to the second device. ### Claim 6 (depends on 1) The method according to claim 1, wherein: the second time resource is a frame, a subframe, or a timeslot. ### Claim 7 An information transmission method, comprising: receiving, by a second device, scrambled first data sent by a first device; and descrambling, by the second device, the first data according to a first scrambling code sequence, wherein the first data is carried on a first time resource on an unlicensed carrier, and the first scrambling code sequence is generated according to a sequence number of a second time resource on a licensed carrier or a first value; wherein the first time resource is a first timeslot, wherein the first timeslot belongs to a first subframe, and the first subframe comprises N orthogonal frequency division multiplexing (OFDM) symbols; when N is greater than M/2, the first timeslot comprises first N−M/2 OFDM symbols of the N OFDM symbols; M is a quantity of OFDM symbols comprised in one complete subframe; wherein M and N are positive integers, and M≥N. ### Claim 8 (depends on 7) The method according to claim 7, wherein: a time domain resource of the second time resource comprises a time domain resource of the first time resource. ### Claim 9 (depends on 8) The method according to claim 8, wherein: the time domain resource of the second time resource is the same as that of the first time resource. ### Claim 10 (depends on 7) The method according to claim 7, wherein: the first value is: a preset value, or a value determined by the first device, or a value determined by a third party. ### Claim 11 (depends on 10) The method according to claim 10, wherein the first value is the value determined by the first device, and the method further comprises: receiving, by the second device, the first value sent by the first device. ### Claim 12 (depends on 7) The method according to claim 7, wherein: the second time resource is a frame, a subframe, or a timeslot. ### Claim 13 A first device, comprising: a processor configured to scramble, according to a first scrambling code sequence, first data carried on a first time resource on an unlicensed carrier, wherein the first data is data that is sent by the first device to a second device, and the first scrambling code sequence is generated according to a sequence number of a second time resource on a licensed carrier or a first value; and a transmitter configured to send first data scrambled by the processor to the second device; wherein the first time resource is a first timeslot, wherein the first timeslot belongs to a first subframe, and the first subframe comprises N orthogonal frequency division multiplexing (OFDM) symbols; when N is greater than M/2, the first timeslot comprises first N−M/2 OFDM symbols of the N OFDM symbols; wherein M is a quantity of OFDM symbols comprised in one complete subframe, M and N are positive integers, and M≥N. ### Claim 14 (depends on 13) The first device according to claim 13, wherein the first value is a value determined by the first device; and the transmitter is further configured to send the first value to the second device.