# US 11,115,945 B2 · User terminal and radio communication method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,115,945 B2 - Document ID: US11115945B2 - Status: Granted - Kind: B2 - Application number: 16/608,666 - Filed: 2017-04-28 - Published: 2020-05-07 - Granted: 2021-09-07 - Earliest claimed: 2017-04-28 - Assignees: Ntt Docomo, Inc. - Applicants: Ntt Docomo, Inc. - Inventors: Hiroki Harada; Kazuaki Takeda; Daiki Takeda; Satoshi Nagata - Web page: https://patentgrep.com/patent/US11115945B2 ## CPC - H04W 56/001: {Synchronization between nodes} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - 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)} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 56/0015: {one node acting as a reference for the others} - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/04: Wireless resource allocation - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/30: Resource management for broadcast services - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract To transmit and receive signals in a radio communication system where communication is carried out based on different configurations from those of existing LTE systems, in accordance with one aspect of the present invention, a user terminal has a receiving section that receives a synchronization signal arranged in a first frequency domain and a broadcast channel arranged in a second frequency domain, which is wider than the first frequency domain, and a control section that controls a receiving process of DL signals, and the control section controls the receiving process on the assumption that, in at least part of given frequency domain that neighbors the first frequency domain, no DL signal is mapped or a specific DL signal is mapped. ## Claims ### Claim 1 A terminal comprising: a receiver that receives a first synchronization signal (PSS), a second synchronization signal (SSS), and a broadcast channel (PBCH); and a processor that controls, in a given block that is formed by a given number of symbols and a given number of subcarriers, reception of the PSS and the SSS which are located in a first frequency domain, and the PBCH which is located in at least a second frequency domain that is broader than the first frequency domain, wherein, in the given block, a downlink signal is not located in a given resource that is contiguous with a resource of the PSS in the frequency direction, and wherein the first frequency domain is included in a range of the second frequency domain, and a frequency domain of the given resource is an entire domain of the second frequency domain except for the first frequency domain. ### Claim 2 (depends on 1) The terminal according to claim 1, wherein the PSS, the SSS and the PBCH are at least located in different symbols. ### Claim 3 (depends on 2) The terminal according to claim 2, wherein a subcarrier corresponding to the given resource is predefined in accordance with predetermined specifications. ### Claim 4 (depends on 2) The terminal according to claim 2, wherein the processor controls reception by assuming that no other downlink signals are located in the given resource. ### Claim 5 (depends on 1) The terminal according to claim 1, wherein a subcarrier corresponding to the given resource is predefined in accordance with predetermined specifications. ### Claim 6 (depends on 5) The terminal according to claim 5, wherein the processor controls reception by assuming that no other downlink signals are located in the given resource. ### Claim 7 (depends on 1) The terminal according to claim 1, wherein the processor controls reception by assuming that no other downlink signals are located in the given resource. ### Claim 8 A terminal comprising: a receiver that receives a first synchronization signal (PSS), a second synchronization signal (SSS), and a broadcast channel (PBCH); and a processor that controls, in a given block that is formed by a given number of symbols and a given number of subcarriers, reception of the PSS and the SSS which are located in a first frequency domain, and the PBCH which is located in at least part of a second frequency domain that is broader than the first frequency domain, wherein, in the given block, at least one of the PBCH and a reference signal is located in at least part of a given resource that is contiguous with a resource of the SSS in the frequency direction, and wherein a location pattern for a reference signal that is located in at least part of the given resource is the same as a location pattern for a reference signal that is located in different symbols to those of the SSS. ### Claim 9 (depends on 8) The terminal according to claim 8, wherein the PBCH and the reference signal are located in the given resource away from the SSS by a given interval. ### Claim 10 (depends on 9) The terminal according to claim 9, wherein the first frequency domain is included in the second frequency domain, and a frequency domain of the given resource is an entire domain of the second frequency domain except for the first frequency domain. ### Claim 11 (depends on 9) The terminal according to claim 9, wherein a subcarrier corresponding to the PBCH and the reference signal located in the given resource is predefined in accordance with predetermined specifications. ### Claim 12 (depends on 8) The terminal according to claim 8, wherein the first frequency domain is included in the second frequency domain, and a frequency domain of the given resource is an entire domain of the second frequency domain except for the first frequency domain. ### Claim 13 (depends on 8) The terminal according to claim 8, wherein a subcarrier corresponding to the PBCH and the reference signal located in the given resource is predefined in accordance with predetermined specifications. ### Claim 14 A base station comprising: a transmitter that transmits a first synchronization signal (PSS), a second synchronization signal (SSS), and a broadcast channel (PBCH); and a processor that controls, in a given block that is formed by a given number of symbols and a given number of subcarriers, transmission of the PSS and the SSS which are located in a first frequency domain, and the PBCH which is located in at least a second frequency domain that is broader than the first frequency domain, wherein, in the given block, a downlink signal is not located in a given resource that is contiguous with a resource of the PSS in the frequency direction, and wherein the first frequency domain is included in a range of the second frequency domain, and a frequency domain of the given resource is an entire domain of the second frequency domain except for the first frequency domain. ### Claim 15 A radio communication method for a terminal, the method comprising: receiving a first synchronization signal (PSS), a second synchronization signal (SSS), and a broadcast channel (PBCH); and controlling, in a given block that is formed by a given number of symbols and a given number of subcarriers, reception of the PSS and the SSS which are located in a first frequency domain, and the PBCH which is located in at least a second frequency domain that is broader than the first frequency domain, wherein, in the given block, a downlink signal is not located in a given resource that is contiguous with a resource of the PSS in the frequency direction, and wherein the first frequency domain is included in a range of the second frequency domain, and a frequency domain of the given resource is an entire domain of the second frequency domain except for the first frequency domain. ### Claim 16 A system comprising a base station and a terminal, wherein: the base station comprises: a transmitter that transmits a first synchronization signal (PSS), a second synchronization signal (SSS), and a broadcast channel (PBCH), and the terminal comprises: a receiver that receives the PSS, the SSS, and the PBCH; and a processor that controls, in a given block that is formed by a given number of symbols and a given number of subcarriers, reception of the PSS and the SSS which are located in a first frequency domain, and the PBCH which is located in at least a second frequency domain that is broader than the first frequency domain, wherein, in the given block, a downlink signal is not located in a given resource that is contiguous with a resource of the PSS in the frequency direction, and wherein the first frequency domain is included in a range of the second frequency domain, and a frequency domain of the given resource is an entire domain of the second frequency domain except for the first frequency domain.