# US 11,122,451 B2 · Mobility measurement method and device, and computer-readable storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,122,451 B2 - Document ID: US11122451B2 - Status: Granted - Kind: B2 - Application number: 16/679,095 - Filed: 2019-11-08 - Published: 2020-03-05 - Granted: 2021-09-14 - Earliest claimed: 2017-05-26 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Yang Liu - Web page: https://patentgrep.com/patent/US11122451B2 ## CPC - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - 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 8/02: Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks - H04W 36/0061: {of neighbour cell information} - H04W 56/001: {Synchronization between nodes} - 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 A mobility measurement method includes: receiving, from a first base station, system information including information of a first reference signal configured by the first base station for a current cell that is a cell accessed currently, and information of a second reference signal configured by a second base station for a neighboring cell of the current cell, the first and second base stations corresponding respectively to the current cell and the neighboring cell; and measuring mobility of the current cell based on a reference signal in a synchronization block of the current cell and the first reference signal according to the information of the first reference signal, and measuring mobility of the neighbor cell based on a reference signal in a synchronization block of the neighbor cell and the second reference signal according to the information of the second reference signal. ## Claims ### Claim 1 A mobility measurement method performed by a user equipment (UE), comprising: receiving system information from a first base station, wherein the system information comprises information of a first reference signal and information of a second reference signal, the first reference signal is a reference signal configured by the first base station for a current cell, the current cell is a cell accessed currently, the second reference signal is a reference signal configured by a second base station for a neighbor cell of the current cell, the first base station is a base station corresponding to the current cell, and the second base station is a base station corresponding to the neighbor cell; measuring mobility of the current cell based on a reference signal in a synchronization block of the current cell and the first reference signal according to the information of the first reference signal; and measuring mobility of the neighbor cell based on a reference signal in a synchronization block of the neighbor cell and the second reference signal according to the information of the second reference signal, wherein after measuring the mobility of the current cell based on the reference signal in the synchronization block of the current cell and the first reference signal according to the information of the first reference signal, the method further comprises: in a case that the system information further comprises an update message of the current cell and the update message comprises a first update time and information of an updated first reference signal, when the first update time is reached, measuring the mobility of the current cell based on the reference signal in the synchronization block of the current cell and the updated first reference signal according to the information of the updated first reference signal; performing moving average processing on a mobility measurement result determined within a first preset time period prior to the first update time and a mobility measurement result determined when the first update time is reached; and determining a result obtained after the moving average processing as the mobility measurement result of the current cell. ### Claim 2 (depends on 1) The method of claim 1, wherein the information of the first reference signal comprises first initial position information, first end position information and a first density number, the first initial position information is configured to determine an initial position of the first reference signal on a time frequency of the current cell, the first end position information is configured to determine an end position of the first reference signal on the time frequency of the current cell, and the first density number is configured to determine a density of the first reference signal on the time frequency of the current cell; and the information of the second reference signal comprises second initial position information, second end position information and a second density number, the second initial position information is configured to determine an initial position of the second reference signal on a time frequency of the neighbor cell, the second end position information is configured to determine an end position of the second reference signal on the time frequency of the neighbor cell, and the second density number is configured to determine a density of the second reference signal on the time frequency of the neighbor cell. ### Claim 3 (depends on 1) The method of claim 1, wherein the information of the first reference signal comprises a first format number configured to determine a distribution format of the first reference signal on the time frequency of the current cell; and the information of the second reference signal comprises a second format number configured to determine a distribution format of the second reference signal on the time frequency of the neighbor cell. ### Claim 4 (depends on 1) The method of claim 1, wherein the measuring mobility of the current cell based on a reference signal in a synchronization block of the current cell and the first reference signal according to the information of the first reference signal, and measuring mobility of the neighbor cell based on a reference signal in a synchronization block of the neighbor cell and the second reference signal according to the information of the second reference signal, comprise: obtaining a first measurement result by measuring the mobility of the reference signal in the synchronization block of the current cell and a second measurement result by measuring the mobility of the first reference signal according to the information of the first reference signal; obtaining a third measurement result by measuring the mobility of the reference signal in the synchronization block of the neighbor cell and a fourth measurement result by measuring the mobility of the second reference signal according to the information of the second reference signal; obtaining a mobility measurement result of the current cell by performing moving average processing on the first measurement result and the second measurement result; and obtaining a mobility measurement result of the neighbor cell by performing moving average processing on the third measurement result and the fourth measurement result. ### Claim 5 A mobility measurement method performed by a terminal device, comprising: receiving system information from a first base station, wherein the system information comprises information of a first reference signal and information of a second reference signal, the first reference signal is a reference signal configured by the first base station for a current cell, the current cell is a cell accessed currently, the second reference signal is a reference signal configured by a second base station for a neighbor cell of the current cell, the first base station is a base station corresponding to the current cell, and the second base station is a base station corresponding to the neighbor cell; measuring mobility of the current cell based on a reference signal in a synchronization block of the current cell and the first reference signal according to the information of the first reference signal; and measuring mobility of the neighbor cell based on a reference signal in a synchronization block of the neighbor cell and the second reference signal according to the information of the second reference signal, wherein after measuring the mobility of the neighbor cell based on the reference signal in the synchronization block of the neighbor cell and the second reference signal according to the information of the second reference signal, the method further comprises: in a case that the system information further comprises an update message of the neighbor cell and the update message comprises a second update time and information of an updated second reference signal, when the second update time is reached, measuring the mobility of the neighbor cell based on the reference signal in the synchronization block of the neighbor cell and the updated second reference signal according to the information of the updated second reference signal; performing moving average processing on a mobility measurement result determined within a second preset time period prior to the second update time and a mobility measurement result determined when the second update time is reached; and determining a result obtained after the moving average processing as the mobility measurement result of the neighbor cell. ### Claim 6 (depends on 1) The method of claim 1, wherein a density of the first reference signal is set according to an actual operating environment. ### Claim 7 (depends on 6) The method of claim 6, wherein the density is set according to three cases: in a densely populated urban area, the density of the first reference signal is set to be one-half to avoid interference, wherein one of every two resource elements (REs) is the first reference signal; in a non-densely populated urban area, the density is set to be one-third, wherein one of every three REs is the first reference signal; and in an open area of a suburb, the density is set to be one-sixth, where one of every six REs is the first reference signal. ### Claim 8 (depends on 7) The method of claim 7, wherein the information of the first reference signal includes a first initial position information, a second end position information, and a first density number, to thereby determine a position of the first reference signal in the REs. ### Claim 9 (depends on 8) The method of claim 8, wherein an initial position of the first reference signal on a time frequency is determined according to the first initial position information; an end position of the first reference signal on the time frequency is determined according to the second end position information; and a density of the first reference signal on the time frequency is determined according to the first density number, thereby determining distribution positions and distribution rule of the first reference signal in the REs, such that the position of the first reference signal in the REs of the current cell is determined. ### Claim 10 (depends on 3) The method of claim 3, further comprising pre-negotiating, between the first base station and the user equipment (UE), a corresponding relationship between first format numbers and corresponding formats, such that the UE determines a distribution format of the first reference signal on the time frequency of the current cell according to the corresponding first format number, wherein the distribution format directly represents a distribution position and a distribution rule of the first reference signal on the time frequency of the current cell. ### Claim 11 (depends on 10) The method of claim 10, wherein a time for the first base station to send the first reference signal is synchronous to a time to send the synchronization block of the current cell to enable the UE measure the mobility of the reference signal in the synchronization block of the current cell and the first reference signal respectively; and for the current cell, the mobility is measured both based on the reference signal in the synchronization block of the current cell, and based on the first reference signal configured by the first base station. ### Claim 12 A mobility measurement device, comprising: a processor; and a memory, configured to store instructions that, when executed by the processor, cause the mobility measurement device to perform actions including: receiving system information from a first base station, wherein the system information comprises information of a first reference signal and information of a second reference signal, the first reference signal is a reference signal configured by the first base station for a current cell, the current cell is a cell accessed currently, the second reference signal is a reference signal configured by a second base station for a neighbor cell of the current cell, the first base station is a base station corresponding to the current cell, and the second base station is a base station corresponding to the neighbor cell; measuring mobility of the current cell based on a reference signal in a synchronization block of the current cell and the first reference signal according to the information of the first reference signal; and measuring mobility of the neighbor cell based on a reference signal in a synchronization block of the neighbor cell and the second reference signal according to the information of the second reference signal, wherein the measuring mobility of the current cell based on a reference signal in a synchronization block of the current cell and the first reference signal according to the information of the first reference signal, and measuring mobility of the neighbor cell based on a reference signal in a synchronization block of the neighbor cell and the second reference signal according to the information of the second reference signal, comprise: obtaining a first measurement result by measuring the mobility of the reference signal in the synchronization block of the current cell and a second measurement result by measuring the mobility of the first reference signal according to the information of the first reference signal; obtaining a third measurement result by measuring the mobility of the reference signal in the synchronization block of the neighbor cell and a fourth measurement result by measuring the mobility of the second reference signal according to the information of the second reference signal; obtaining a mobility measurement result of the current cell by performing moving average processing on the first measurement result and the second measurement result; and obtaining a mobility measurement result of the neighbor cell by performing moving average processing on the third measurement result and the fourth measurement result. ### Claim 13 (depends on 12) The device of claim 12, wherein: the information of the first reference signal comprises first initial position information, first end position information and a first density number, the first initial position information is configured to determine an initial position of the first reference signal on a time frequency of the current cell, the first end position information is configured to determine an end position of the first reference signal on the time frequency of the current cell, and the first density number is configured to determine a density of the first reference signal on the time frequency of the current cell; and the information of the second reference signal comprises second initial position information, second end position information and a second density number, the second initial position information is configured to determine an initial position of the second reference signal on a time frequency of the neighbor cell, the second end position information is configured to determine an end position of the second reference signal on the time frequency of the neighbor cell, and the second density number is configured to determine a density of the second reference signal on the time frequency of the neighbor cell. ### Claim 14 (depends on 12) The device of claim 12, wherein the information of the first reference signal comprises a first format number configured to determine a distribution format of the first reference signal on the time frequency of the current cell; and the information of the second reference signal comprises a second format number configured to determine a distribution format of the second reference signal on the time frequency of the neighbor cell. ### Claim 15 (depends on 12) The device of claim 12, wherein after measuring mobility of the current cell based on a reference signal in a synchronization block of the current cell and the first reference signal according to the information of the first reference signal, the actions further include: in a case that the system information further comprises an update message of the current cell and the update message comprises a first update time and information of an updated first reference signal, when the first update time is reached, measuring the mobility of the current cell based on the reference signal in the synchronization block of the current cell and the updated first reference signal according to the information of the updated first reference signal; performing moving average processing on a mobility measurement result determined within a first preset time period prior to the first update time and a mobility measurement result determined when the first update time is reached; and determining a result obtained after the moving average processing as the mobility measurement result of the current cell. ### Claim 16 (depends on 12) The device of claim 12, wherein after measuring the mobility of the neighbor cell based on the reference signal in the synchronization block of the neighbor cell and the second reference signal according to the information of the second reference signal, the actions further include: in a case that the system information further comprises an update message of the neighbor cell and the update message comprises a second update time and information of an updated second reference signal, when the second update time is reached, measuring the mobility of the neighbor cell based on the reference signal in the synchronization block of the neighbor cell and the updated second reference signal according to the information of the updated second reference signal; performing moving average processing on a mobility measurement result determined within a second preset time period prior to the second update time and a mobility measurement result determined when the second update time is reached; and determining a result obtained after the moving average processing as the mobility measurement result of the neighbor cell.