# US 2022/0046499 A1 · Method and apparatus for determining signal quality information of frequency > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0046499 A1 - Document ID: US20220046499A1 - Status: Published application - Kind: A1 - Application number: 17/508,555 - Filed: 2021-10-22 - Published: 2022-02-10 - Earliest claimed: 2019-04-22 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Jun Lu; Hanye Pu - Web page: https://patentgrep.com/patent/US20220046499A1 ## CPC - H04W 36/0094: {Definition of hand-off measurement parameters} - H04B 17/309: Measuring or estimating channel quality parameters - H04L 1/20: using signal quality detector - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 36/0085: {Hand-off measurements} - H04W 36/22: for handling the traffic - H04W 36/302: {due to low signal strength} - H04B 17/373: Predicting channel quality {or other radio frequency [RF]} parameters - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract This application provides a method and an apparatus for determining signal quality information of a frequency. In this method, terminal devices do not need to perform inter-frequency measurement or inter-RAT measurement, but only need to perform intra-frequency measurement and report signal quality information of an intra-frequency to a network device, so that the network device can determine signal quality information of an inter-frequency. In this way, the network device may select a carrier for the terminal devices based on the signal quality information of the intra-frequency and the signal quality information of the inter-frequency. Clearly, because the terminal devices do not need to perform the inter-frequency measurement or the inter-RAT measurement, in addition to ensuing a carrier selection gain, the method can further ensure service continuity and service throughputs of the terminal devices, and avoid overheads of the inter-frequency measurement and the inter-RAT measurement. ## Claims ### Claim 1 A method for determining signal quality information of a frequency, comprising: obtaining, by a network device, signal quality information, of a first frequency, from terminal devices, wherein the first frequency is a frequency used by a serving cell accessed by the terminal devices; and determining, by the network device, signal quality information of a second frequency based on the signal quality information of the first frequency and a stored first mapping relationship, wherein the second frequency is different from the first frequency, and the first mapping relationship is a mapping relationship between the signal quality information of the first frequency and the signal quality information of the second frequency. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first mapping relationship is obtained by modeling sample data of the signal quality information of the first frequency and sample data of the signal quality information of the second frequency, wherein the sample data of the signal quality information of the first frequency comprises signal quality information, of the first frequency, measured for a plurality of times by the plurality of terminal devices that access the serving cell; and signal quality information, of the first frequency, measured by each terminal device comprises a signal quality parameter of a first neighboring cell, wherein the first neighboring cell uses the first frequency; and the sample data of the signal quality information of the second frequency comprises signal quality information, of the second frequency, measured for a plurality of times by the plurality of terminal devices that access the serving cell; and signal quality information, of the second frequency, measured by each terminal device comprises a signal quality parameter of a second neighboring cell, wherein the second neighboring cell uses the second frequency. ### Claim 3 (depends on 2) The method according to claim 2, wherein the method further comprises: obtaining, by the network device, load information of the first neighboring cell; and determining, by the network device, spectral efficiency of the serving cell based on the signal quality information of the first frequency, the load information of the first neighboring cell, and a stored second mapping relationship, wherein the second mapping relationship is a mapping relationship between the signal quality information of the first frequency and the load information of the first neighboring cell and the spectral efficiency of the serving cell. ### Claim 4 (depends on 3) The method according to claim 3, wherein the second mapping relationship is obtained by modeling the sample data of the signal quality information of the first frequency, sample data of the load information of the first neighboring cell, and sample data of the spectral efficiency of the serving cell, wherein the sample data of the load information of the first neighboring cell comprises load information, of the first neighboring cell, obtained each time the plurality of terminal devices that access the serving cell measure the signal quality information of the first frequency; and the sample data of the spectral efficiency of the serving cell comprises spectral efficiency, of the serving cell, obtained each time the plurality of terminal devices that access the serving cell measure the signal quality information of the first frequency. ### Claim 5 (depends on 2) The method according to claim 2 wherein the method further comprises: obtaining, by the network device, load information of the second neighboring cell; and determining, by the network device, spectral efficiency of the second neighboring cell based on the signal quality information of the first frequency, the load information of the second neighboring cell, and a stored third mapping relationship, wherein the third mapping relationship is a mapping relationship between the signal quality information of the first frequency and the load information of the second neighboring cell and the spectral efficiency of the second neighboring cell. ### Claim 6 (depends on 5) The method according to claim 5, wherein the third mapping relationship is obtained by modeling the sample data of the signal quality information of the first frequency, sample data of the load information of the second neighboring cell, and sample data of the spectral efficiency of the second neighboring cell, wherein the sample data of the load information of the second neighboring cell comprises load information, of the second neighboring cell, obtained each time the plurality of terminal devices that access the serving cell measure the signal quality information of the second frequency; and the sample data of the spectral efficiency of the second neighboring cell comprises spectral efficiency, of the second neighboring cell, obtained each time the plurality of terminal devices that access the serving cell measure the signal quality information of the second frequency. ### Claim 7 An apparatus for determining signal quality information of a frequency, wherein the apparatus is used in a network device and comprises: a communications unit, configured to obtain signal quality information, of a first frequency, from terminal devices, wherein the first frequency is a frequency used by a serving cell accessed by the terminal devices; and a processing unit, configured to determine signal quality information of a second frequency based on the signal quality information of the first frequency and a stored first mapping relationship, wherein the second frequency is different from the first frequency, and the first mapping relationship is a mapping relationship between the signal quality information of the first frequency and the signal quality information of the second frequency. ### Claim 8 (depends on 7) The apparatus according to claim 7, wherein the first mapping relationship is obtained by modeling sample data of the signal quality information of the first frequency and sample data of the signal quality information of the second frequency, wherein the sample data of the signal quality information of the first frequency comprises signal quality information, of the first frequency, measured for a plurality of times by the plurality of terminal devices that access the serving cell; and signal quality information, of the first frequency, measured by each terminal device comprises a signal quality parameter of a first neighboring cell, wherein the first neighboring cell uses the first frequency; and the sample data of the signal quality information of the second frequency comprises signal quality information, of the second frequency, measured for a plurality of times by the plurality of terminal devices that access the serving cell; and signal quality information, of the second frequency, measured by each terminal device comprises a signal quality parameter of a second neighboring cell, wherein the second neighboring cell uses the second frequency. ### Claim 9 (depends on 8) The apparatus according to claim 8, wherein the communications unit is further configured to obtain load information of the first neighboring cell; and the processing unit is further configured to determine spectral efficiency of the serving cell based on the signal quality information of the first frequency, the load information of the first neighboring cell, and a stored second mapping relationship, wherein the second mapping relationship is a mapping relationship between the signal quality information of the first frequency and the load information of the first neighboring cell and the spectral efficiency of the serving cell. ### Claim 10 (depends on 9) The apparatus according to claim 9, wherein the second mapping relationship is obtained by modeling the sample data of the signal quality information of the first frequency, sample data of the load information of the first neighboring cell, and sample data of the spectral efficiency of the serving cell, wherein the sample data of the load information of the first neighboring cell comprises load information, of the first neighboring cell, obtained each time the plurality of terminal devices that access the serving cell measure the signal quality information of the first frequency; and the sample data of the spectral efficiency of the serving cell comprises spectral efficiency, of the serving cell, obtained each time the plurality of terminal devices that access the serving cell measure the signal quality information of the first frequency. ### Claim 11 (depends on 8) The apparatus according to claim 8, wherein the communications unit is further configured to obtain load information of the second neighboring cell; and the processing unit is further configured to determine spectral efficiency of the second neighboring cell based on the signal quality information of the first frequency, the load information of the second neighboring cell, and a stored third mapping relationship, wherein the third mapping relationship is a mapping relationship between the signal quality information of the first frequency and the load information of the second neighboring cell and the spectral efficiency of the second neighboring cell. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein the third mapping relationship is obtained by modeling the sample data of the signal quality information of the first frequency, sample data of the load information of the second neighboring cell, and sample data of the spectral efficiency of the second neighboring cell, wherein the sample data of the load information of the second neighboring cell comprises load information, of the second neighboring cell, obtained each time the plurality of terminal devices that access the serving cell measure the signal quality information of the second frequency; and the sample data of the spectral efficiency of the second neighboring cell comprises spectral efficiency, of the second neighboring cell, obtained each time the plurality of terminal devices that access the serving cell measure the signal quality information of the second frequency. ### Claim 13 A non-transitory computer readable medium, wherein the non-transitory computer readable medium stores instructions that are executable by a computer, and the instructions comprise instructions for: obtaining signal quality information, of a first frequency, from terminal devices, wherein the first frequency is a frequency used by a serving cell accessed by the terminal devices; and determining signal quality information of a second frequency based on the signal quality information of the first frequency and a stored first mapping relationship, wherein the second frequency is different from the first frequency, and the first mapping relationship is a mapping relationship between the signal quality information of the first frequency and the signal quality information of the second frequency. ### Claim 14 (depends on 13) The non-transitory computer readable medium according to claim 13, wherein the first mapping relationship is obtained by modeling sample data of the signal quality information of the first frequency and sample data of the signal quality information of the second frequency, wherein the sample data of the signal quality information of the first frequency comprises signal quality information, of the first frequency, measured for a plurality of times by the plurality of terminal devices that access the serving cell; and signal quality information, of the first frequency, measured by each terminal device comprises a signal quality parameter of a first neighboring cell, wherein the first neighboring cell uses the first frequency; and the sample data of the signal quality information of the second frequency comprises signal quality information, of the second frequency, measured for a plurality of times by the plurality of terminal devices that access the serving cell; and signal quality information, of the second frequency, measured by each terminal device comprises a signal quality parameter of a second neighboring cell, wherein the second neighboring cell uses the second frequency. ### Claim 15 (depends on 14) The non-transitory computer readable medium according to claim 14, wherein the instructions further comprise instructions for: obtaining load information of the first neighboring cell; and determining spectral efficiency of the serving cell based on the signal quality information of the first frequency, the load information of the first neighboring cell, and a stored second mapping relationship, wherein the second mapping relationship is a mapping relationship between the signal quality information of the first frequency and the load information of the first neighboring cell and the spectral efficiency of the serving cell. ### Claim 16 (depends on 15) The non-transitory computer readable medium according to claim 15, wherein the second mapping relationship is obtained by modeling the sample data of the signal quality information of the first frequency, sample data of the load information of the first neighboring cell, and sample data of the spectral efficiency of the serving cell, wherein the sample data of the load information of the first neighboring cell comprises load information, of the first neighboring cell, obtained each time the plurality of terminal devices that access the serving cell measure the signal quality information of the first frequency; and the sample data of the spectral efficiency of the serving cell comprises spectral efficiency, of the serving cell, obtained each time the plurality of terminal devices that access the serving cell measure the signal quality information of the first frequency. ### Claim 17 (depends on 14) The non-transitory computer readable medium according to claim 14, wherein the instructions further comprise instructions for: obtaining load information of the second neighboring cell; and determining spectral efficiency of the second neighboring cell based on the signal quality information of the first frequency, the load information of the second neighboring cell, and a stored third mapping relationship, wherein the third mapping relationship is a mapping relationship between the signal quality information of the first frequency and the load information of the second neighboring cell and the spectral efficiency of the second neighboring cell. ### Claim 18 (depends on 17) The non-transitory computer readable medium according to claim 17, wherein the third mapping relationship is obtained by modeling the sample data of the signal quality information of the first frequency, sample data of the load information of the second neighboring cell, and sample data of the spectral efficiency of the second neighboring cell, wherein the sample data of the load information of the second neighboring cell comprises load information, of the second neighboring cell, obtained each time the plurality of terminal devices that access the serving cell measure the signal quality information of the second frequency; and the sample data of the spectral efficiency of the second neighboring cell comprises spectral efficiency, of the second neighboring cell, obtained each time the plurality of terminal devices that access the serving cell measure the signal quality information of the second frequency.