# US 12,120,641 B2 · Method and device for use in communication node for random access wireless communications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,641 B2 - Document ID: US12120641B2 - Status: Granted - Kind: B2 - Application number: 17/372,503 - Filed: 2021-07-11 - Published: 2021-10-28 - Granted: 2024-10-15 - Earliest claimed: 2019-05-23 - Assignees: Shanghai Langbo Communication Technology Company Limited - Applicants: Zheng Liu; Xiaobo Zhang - Inventors: Zheng Liu; Xiaobo Zhang - Web page: https://patentgrep.com/patent/US12120641B2 ## CPC - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 72/02: Selection of wireless resources by user or terminal - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 8/24: Transfer of terminal data - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/51: based on terminal or device properties - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - 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) ## Abstract The disclosure provides a method and a device for use in a communication node for wireless communications. The communication node receives first information and second information, and transmits a first signal; wherein the first information and the second information are used for determining a first time-frequency resource pool and a second time-frequency resource pool respectively, the first signal occupies a target time-frequency resource block; a number of resources occupied in time domain by any one first-type time-frequency resource block in the first time-frequency resource pool is not equal to a number of resources occupied in time domain by any one second-type time-frequency resource block in the second time-frequency resource pool; the target time-frequency resource block belongs to the first time-frequency resource pool or the second time-frequency resource pool. The disclosure improves random access performances. ## Claims ### Claim 1 A first communication node for wireless communications, comprising: a first receiver, to receive first information and to receive second information, the first information and the second information being used for determining a first time-frequency resource pool and a second time-frequency resource pool respectively; and a first transmitter, to transmit a first signal, the first signal occupying a target time-frequency resource block, the first signal is used for random access; wherein the first time-frequency resource pool comprises a positive integer number of first-type time-frequency resource block(s), and the second time-frequency resource pool comprises a positive integer number of second-type time-frequency resource block(s); a number of resources occupied in time domain by any one first-type time-frequency resource block in the first time-frequency resource pool is not equal to a number of resources occupied in time domain by any one second-type time-frequency resource block in the second time-frequency resource pool; the target time-frequency resource block is one first-type time-frequency resource block comprised in the first time-frequency resource pool, or the target time-frequency resource block is one second-type time-frequency resource block comprised in the second time-frequency resource pool; and positioning information of the first communication node is used for determining a time-frequency resource pool to which the target time-frequency resource block belongs between the first time-frequency resource pool and the second time-frequency resource pool; an absolute value of a time difference between a start time of transmitting the first signal and a reference time is equal to a first timing adjustment quantity, and a receive timing of the first communication node is used for determining the reference time; when the target time-frequency resource block belongs to the first time-frequency resource pool, the first timing adjustment quantity is greater than 0; and when the target time-frequency resource block belongs to the second time-frequency resource pool, the first timing adjustment quantity is equal to 0. ### Claim 2 (depends on 1) The first communication node according to claim 1, wherein the first transmitter determines a target sequence; when the target time-frequency resource block belongs to the first time-frequency resource pool, the target sequence is repeated W1 time(s) to generate the first signal; when the target time-frequency resource block belongs to the second time-frequency resource pool, the target sequence is repeated W2 time(s) to generate the first signal; W1 is a positive integer, and W2 is a positive integer not equal to W1. ### Claim 3 (depends on 2) The first communication node according to claim 2, wherein the first receiver receives third information; the third information is used for determining X candidate sequences, and X is a positive integer greater than 1; the target sequence is one of the X candidate sequences, and the first communication node selects the target sequence among the X candidate sequences randomly. ### Claim 4 (depends on 1) The first communication node according to claim 1, wherein the first receiver receives a first signaling in a first time window; a position of the target time-frequency resource block in time-frequency domain is used for determining a first signature ID, and the first signaling carries the first signature ID; the first time window is one of Y candidate time windows, Y is a positive integer greater than 1, and any two of the Y candidate time windows are orthogonal; and a time-frequency resource pool to which the target time-frequency resource block belongs is used for determining the first time window out of the Y candidate time windows. ### Claim 5 (depends on 1) The first communication node according to claim 1, wherein the first transmitter transmits a second signal; the second signal carries fourth information, and the fourth information is used for indicating a positioning capability of the first communication node. ### Claim 6 (depends on 1) The first communication node according to claim 1, when the first communication node can acquire the positioning information of the first communication node, the first communication node determines by itself a time-frequency resource pool to which the target time-frequency resource block belongs between the first time-frequency resource pool and the second time-frequency resource pool; when the first communication node cannot acquire the positioning information of the first communication node, the target time-frequency resource block belongs to the first time-frequency resource pool. ### Claim 7 A second communication node for wireless communications, comprising: a second transmitter, to transmit first information and to transmit second information, the first information and the second information being used for determining a first time-frequency resource pool and a second time-frequency resource pool respectively; and a second receiver, to receive a first signal, the first signal occupying a target time-frequency resource block, the first signal is used for random access; wherein the first time-frequency resource pool comprises a positive integer number of first-type time-frequency resource block(s), and the second time-frequency resource pool comprises a positive integer number of second-type time-frequency resource block(s); a number of resources occupied in time domain by any one first-type time-frequency resource block in the first time-frequency resource pool is not equal to a number of resources occupied in time domain by any one second-type time-frequency resource block in the second time-frequency resource pool; the target time-frequency resource block is one first-type time-frequency resource block comprised in the first time-frequency resource pool, or the target time-frequency resource block is one second-type time-frequency resource block comprised in the second time-frequency resource pool; and positioning information of the first communication node is used for determining a time-frequency resource pool to which the target time-frequency resource block belongs between the first time-frequency resource pool and the second time-frequency resource pool; an absolute value of a time difference between a start time of transmitting the first signal and a reference time is equal to a first timing adjustment quantity, and a receive timing of the first communication node is used for determining the reference time; when the target time-frequency resource block belongs to the first time-frequency resource pool, the first timing adjustment quantity is greater than 0; and when the target time-frequency resource block belongs to the second time-frequency resource pool, the first timing adjustment quantity is equal to 0. ### Claim 8 (depends on 7) The second communication node according to claim 7, wherein the second receiver determines a target sequence; when the target time-frequency resource block belongs to the first time-frequency resource pool, the target sequence is repeated W1 time(s) to generate the first signal; when the target time-frequency resource block belongs to the second time-frequency resource pool, the target sequence is repeated W2 time(s) to generate the first signal; W1 is a positive integer, and W2 is a positive integer not equal to W1. ### Claim 9 (depends on 8) The second communication node according to claim 8, wherein the second transmitter transmits third information; the third information is used for determining X candidate sequences, and X is a positive integer greater than 1; the target sequence is one of the X candidate sequences, and the transmitter of the first signal selects the target sequence among the X candidate sequences randomly. ### Claim 10 (depends on 7) The second communication node according to claim 7, wherein the second transmitter transmits a first signaling in a first time window; a position of the target time-frequency resource block in time-frequency domain is used for determining a first signature ID, and the first signaling carries the first signature ID; the first time window is one of Y candidate time windows, Y is a positive integer greater than 1, and any two of the Y candidate time windows are orthogonal; and a time-frequency resource pool to which the target time-frequency resource block belongs is used for determining the first time window out of the Y candidate time windows. ### Claim 11 (depends on 7) The second communication node according to claim 7, wherein the second receiver receives a second signal; the second signal carries fourth information, and the fourth information is used for indicating a positioning capability of a transmitter of the second signal. ### Claim 12 (depends on 7) The second communication node according to claim 7, when the transmitter of the first signal can acquire the positioning information of the transmitter of the first signal, the transmitter of the first signal determines by itself a time-frequency resource pool to which the target time-frequency resource block belongs between the first time-frequency resource pool and the second time-frequency resource pool; when the transmitter of the first signal cannot acquire the positioning information of the transmitter of the first signal, the target time-frequency resource block belongs to the first time-frequency resource pool. ### Claim 13 A method in a first communication node for wireless communications, comprising: receiving first information and receiving second information, the first information and the second information being used for determining a first time-frequency resource pool and a second time-frequency resource pool respectively; and transmitting a first signal, the first signal occupying a target time-frequency resource block, the first signal is used for random access; wherein the first time-frequency resource pool comprises a positive integer number of first-type time-frequency resource block(s), and the second time-frequency resource pool comprises a positive integer number of second-type time-frequency resource block(s); a number of resources occupied in time domain by any one first-type time-frequency resource block in the first time-frequency resource pool is not equal to a number of resources occupied in time domain by any one second-type time-frequency resource block in the second time-frequency resource pool; the target time-frequency resource block is one first-type time-frequency resource block comprised in the first time-frequency resource pool, or the target time-frequency resource block is one second-type time-frequency resource block comprised in the second time-frequency resource pool; and positioning information of the first communication node is used for determining a time-frequency resource pool to which the target time-frequency resource block belongs between the first time-frequency resource pool and the second time-frequency resource pool; an absolute value of a time difference between a start time of transmitting the first signal and a reference time is equal to a first timing adjustment quantity, and a receive timing of the first communication node is used for determining the reference time; when the target time-frequency resource block belongs to the first time-frequency resource pool, the first timing adjustment quantity is greater than 0; and when the target time-frequency resource block belongs to the second time-frequency resource pool, the first timing adjustment quantity is equal to 0. ### Claim 14 (depends on 13) The method in the first communication node according to claim 13, comprising: receiving third information; and determining a target sequence; when the target time-frequency resource block belongs to the first time-frequency resource pool, the target sequence is repeated W1 time(s) to generate the first signal; when the target time-frequency resource block belongs to the second time-frequency resource pool, the target sequence is repeated W2 time(s) to generate the first signal; W1 is a positive integer, and W2 is a positive integer not equal to W1; the third information is used for determining X candidate sequences, and X is a positive integer greater than 1; the target sequence is one of the X candidate sequences, and the first communication node selects the target sequence among the X candidate sequences randomly. ### Claim 15 (depends on 13) The method in the first communication node according to claim 13, comprising: receiving a first signaling in a first time window; wherein a position of the target time-frequency resource block in time-frequency domain is used for determining a first signature ID, and the first signaling carries the first signature ID; the first time window is one of Y candidate time windows, Y is a positive integer greater than 1, and any two of the Y candidate time windows are orthogonal; and a time-frequency resource pool to which the target time-frequency resource block belongs is used for determining the first time window from the Y candidate time windows. ### Claim 16 (depends on 13) The method in the first communication node according to claim 13, comprising: transmitting a second signal; wherein the second signal carries fourth information, and the fourth information is used for indicating a positioning capability of the first communication node. ### Claim 17 (depends on 13) The method in the first communication node according to claim 13, when the first communication node can acquire the positioning information of the first communication node, the first communication node determines by itself a time-frequency resource pool to which the target time-frequency resource block belongs between the first time-frequency resource pool and the second time-frequency resource pool; when the first communication node cannot acquire the positioning information of the first communication node, the target time-frequency resource block belongs to the first time-frequency resource pool.