# US 11,115,904 B2 · Communication method and communications apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,115,904 B2 - Document ID: US11115904B2 - Status: Granted - Kind: B2 - Application number: 16/532,708 - Filed: 2019-08-06 - Published: 2019-11-28 - Granted: 2021-09-07 - Earliest claimed: 2017-05-05 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Huang Huang; Kuandong Gao; Mao Yan; Gao Xiang - Web page: https://patentgrep.com/patent/US11115904B2 ## CPC - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04W 48/10: using broadcasted information - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04W 48/12: using downlink control channel - H04W 56/0015: {one node acting as a reference for the others} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/30: Resource management for broadcast services - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - Y02D 30/70: in wireless communication networks - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract This application provides a communication method and a communications apparatus. The method includes: determining a system frame number of a radio system frame in which a to-be-sent first broadcast channel PBCH is located, to obtain a first transport block, where the first processing manner is used to indicate some bits of the system frame number of the radio system frame in which the first PBCH is located, and the first MIB includes remaining bits, other than the some bits, of the system frame number of the radio system frame in which the first PBCH is located; and sending, by using the first PBCH, the first transport block in the radio system frame. ## Claims ### Claim 1 A communication method, comprising: receiving a physical broadcast channel (PBCH) from a network device; and processing a transport block carried by the PBCH by descrambling the transport block to obtain information bits of the PBCH, the descrambling is performed by using one segment of a plurality of segments of a pseudo-random sequence, the one segment of the plurality of segments of the pseudo-random sequence implicitly indicates the 2nd and 3rd least significant bits of a system frame number of a radio system frame in which the PBCH is located. ### Claim 2 (depends on 1) The communication method according to claim 1, wherein the information bits of the PBCH comprise bits other than the 2nd and 3rd least significant bits of the system frame number of the radio system frame in which the PBCH is located. ### Claim 3 (depends on 1) The communication method according to claim 1, wherein the one segment of the plurality of segments of the pseudo-random sequence is one of four segments of a pseudo-random sequence which correspond to the 2nd and 3rd least significant bits of the system frame number. ### Claim 4 (depends on 3) The communication method according to claim 3, wherein the four segments of the pseudo-random sequence are based on one initialization seed for initializing the pseudo-random sequence. ### Claim 5 (depends on 3) The communication method according to claim 3, wherein the four segments of the pseudo-random sequence comprise a first segment of the pseudo-random sequence, a second segment of the pseudo-random sequence, a third segment of the pseudo-random sequence, and a fourth segment of the pseudo-random sequence, wherein: the 2nd and 3rd least significant bits implicitly indicated by the first segment of the pseudo-random sequence are 00, the 2nd and 3rd least significant bits implicitly indicated by the second segment of the pseudo-random sequence are 01, the 2nd and 3rd least significant bits implicitly indicated by the third segment of the pseudo-random sequence are 10, and the 2nd and 3rd least significant bits implicitly indicated by the fourth segment of the pseudo-random sequence are 11. ### Claim 6 (depends on 1) The communication method according to claim 1, wherein the PBCH corresponding to the system frame number is received on one or both of a first half-frame or a second half-frame of the radio system frame. ### Claim 7 (depends on 6) The communication method according to claim 6, wherein: the first half-frame or the second half-frame on which the PBCH is received is indicated by using a demodulation reference signal (DMRS) sequence. ### Claim 8 (depends on 6) The communication method according to claim 6, wherein: the first half-frame or the second half-frame on which the PBCH is received is indicated by one bit in the information bits of the PBCH. ### Claim 9 (depends on 1) The communication method according to claim 1, wherein the PBCH is comprised in a synchronization signal block. ### Claim 10 An apparatus, comprising: a transceiver configured to receive a physical broadcast channel (PBCH) from a network device; and a processor configured to process a transport block carried by the PBCH by descrambling the transport block to obtain information bits of the PBCH, the descrambling is performed by using one segment of a plurality of segments of a pseudo-random sequence, the one segment of the plurality of segments of the pseudo-random sequence implicitly indicates the 2nd and 3rd least significant bits of a system frame number of a radio system frame in which the PBCH is located. ### Claim 11 (depends on 10) The apparatus according to claim 10, wherein the information bits of the PBCH comprise bits other than the 2nd and 3rd least significant bits of the system frame number of the radio system frame in which the PBCH is located. ### Claim 12 (depends on 10) The apparatus according to claim 10, wherein the one segment of the plurality of segments of the pseudo-random sequence is one of four segments of a pseudo-random sequence which correspond to the 2nd and 3rd least significant bits of the system frame number. ### Claim 13 (depends on 12) The apparatus according to claim 12, wherein the four segments of the pseudo-random sequence are based on one initialization seed for initializing the pseudo-random sequence. ### Claim 14 (depends on 12) The apparatus according to claim 12, wherein the four segments of the pseudo-random sequence comprise a first segment of the pseudo-random sequence, a second segment of the pseudo-random sequence, a third segment of the pseudo-random sequence, and a fourth segment of the pseudo-random sequence, wherein: the 2nd and 3rd least significant bits implicitly indicated by the first segment of the pseudo-random sequence are 00, the 2nd and 3rd least significant bits implicitly indicated by the second segment of the pseudo-random sequence are 01, the 2nd and 3rd least significant bits implicitly indicated by the third segment of the pseudo-random sequence are 10, and the 2nd and 3rd least significant bits implicitly indicated by the fourth segment of the pseudo-random sequence are 11. ### Claim 15 (depends on 10) The apparatus according to claim 10, wherein the PBCH corresponding to the system frame number is received on one or both of a first half-frame or a second half-frame of the radio system frame. ### Claim 16 (depends on 15) The apparatus according to claim 15, wherein: the first half-frame or the second half-frame on which the PBCH is received is indicated by using a demodulation reference signal (DMRS) sequence. ### Claim 17 (depends on 15) The apparatus according to claim 15, wherein: the first half-frame or the second half-frame on which the PBCH is received is indicated by one bit in the information bits of the PBCH. ### Claim 18 (depends on 10) The apparatus according to claim 10, wherein the PBCH is comprised in a synchronization signal block. ### Claim 19 (depends on 10) The apparatus according to claim 10, the information bits of the PBCH includes information bits of a master information block (MIB). ### Claim 20 A computer readable medium having processor-executable programs stored thereon, the processor-executable programs when executed by a processor, causes the processor to implement operations including: receiving a physical broadcast channel (PBCH) from a network device; and processing a transport block carried by the PBCH by descrambling the transport block to obtain information bits of the PBCH, the descrambling is performed by using one segment of a plurality of segments of a pseudo-random sequence, the one segment of the plurality of segments of the pseudo-random sequence implicitly indicates the 2nd and 3rd least significant bits of a system frame number of a radio system frame in which the PBCH is located.