# US 9,521,571 B2 · Method and apparatus of switching communications from a first channel to a second channel of higher-frequency > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,571 B2 - Document ID: US9521571B2 - Status: Granted - Kind: B2 - Application number: 14/901,790 - Filed: 2013-07-02 - Published: 2016-05-19 - Granted: 2016-12-13 - Earliest claimed: 2013-07-02 - Assignees: Nokia Technologies Oy - Applicants: Nokia Technologies Oy - Inventors: Osman Yilmaz; Pekka Janis - Web page: https://patentgrep.com/patent/US9521571B2 ## CPC - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04B 17/318: Received signal strength - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 28/082: among bearers or channels - H04W 36/0088: {Scheduling hand-off measurements} - H04W 40/14: based on stability - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - 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 A method and apparatus can be configured to measure channel conditions of a first channel (310). The first channel can correspond to a first frequency. The method can also include predicting whether the channel conditions of a second channel are favorable for offloading communication occurring on the first channel to the second channel based on measurements performed on the first channel (320). The second channel can correspond to a second frequency. The second frequency can be higher than the first frequency. The method can also include determining a rate of occurrence for monitoring the second channel based on the results of the predicting (330). ## Claims ### Claim 1 A method, comprising: measuring channel conditions of a first channel, wherein the first channel corresponds to a first frequency; predicting whether the channel conditions of a second channel are favorable for offloading communication occurring on the first channel to the second channel based on measurements performed on the first channel, wherein the second channel corresponds to a second frequency, and the second frequency is higher than the first frequency; and determining a rate of occurrence for monitoring the second channel based on the results of the predicting. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first frequency is below 6 GHz, and the second frequency is above 6 GHz. ### Claim 3 (depends on 1) The method according to claim 1, wherein determining the rate of occurrence for monitoring the second channel comprises at least one of a success rate of previous predictions, a quality of service indicator of the second channel, and a load indicator of the second channel. ### Claim 4 (depends on 1) The method according to claim 1, wherein determining the rate of occurrence for monitoring the second channel comprises determining a lower rate of occurrence if the channel conditions of the second channel are predicted to not be favorable for offloading the communication. ### Claim 5 (depends on 1) The method according to claim 1, wherein predicting whether the channel conditions of the second channel are favorable for offloading the communication comprises predicting whether at least one of a line-of-sight condition or sufficient reference-signal-strength indicator is available for the second channel. ### Claim 6 (depends on 1) The method according to claim 1, wherein measuring channel conditions of the first channel comprises measuring at least one of a reference-signal-strength indicator, a delay spread indicator, and a proportion of channel impulse response energy in a first tap of a channel impulse response. ### Claim 7 (depends on 1) The method according to claim 1, wherein predicting whether the channel conditions of the second channel are favorable for offloading the communication is performed using at least one classifier, and the classifier performs the prediction based on the measured channel conditions of the first channel. ### Claim 8 An apparatus, comprising: at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus at least to measure channel conditions of a first channel, wherein the first channel corresponds to a first frequency; predict whether the channel conditions of a second channel are favorable for offloading communication occurring on the first channel to the second channel based on measurements performed on the first channel, wherein the second channel corresponds to a second frequency, and the second frequency is higher than the first frequency; and determine a rate of occurrence for monitoring the second channel based on the results of the predicting. ### Claim 9 (depends on 8) The apparatus according to claim 8, wherein the first frequency is below 6 GHz, and the second frequency is above 6 GHz. ### Claim 10 (depends on 8) The apparatus according to claim 8, wherein determining the rate of occurrence for monitoring the second channel comprises at least one of a success rate of previous predictions, a quality of service indicator of the second channel, and a load indicator of the second channel. ### Claim 11 (depends on 8) The apparatus according to claim 8, wherein determining the rate of occurrence for monitoring the second channel comprises determining a lower rate of occurrence if the channel conditions of the second channel are predicted to not be favorable for offloading the communication. ### Claim 12 (depends on 8) The apparatus according to claim 8, wherein predicting whether the channel conditions of the second channel are favorable for offloading the communication comprises predicting whether at least one of a line-of-sight condition or sufficient reference-signal-strength indicator is available for the second channel. ### Claim 13 (depends on 8) The apparatus according to claim 8, wherein measuring channel conditions of the first channel comprises measuring at least one of a reference-signal-strength indicator, a delay spread indicator, and a proportion of channel impulse response energy in a first tap of a channel impulse response. ### Claim 14 (depends on 8) The apparatus according to claim 8, wherein predicting whether the channel conditions of the second channel are favorable for offloading the communication is performed using at least one classifier, and the classifier performs the prediction based on the measured channel conditions of the first channel. ### Claim 15 A computer program product, embodied on a non-transitory computer readable medium, the computer program product configured to control a processor to perform a process, comprising: measuring channel conditions of a first channel, wherein the first channel corresponds to a first frequency; predicting whether the channel conditions of a second channel are favorable for offloading communication occurring on the first channel to the second channel based on measurements performed on the first channel, wherein the second channel corresponds to a second frequency, and the second frequency is higher than the first frequency; and determining a rate of occurrence for monitoring the second channel based on the results of the predicting. ### Claim 16 (depends on 15) The computer program product according to claim 15, wherein determining the rate of occurrence for monitoring the second channel comprises at least one of a success rate of previous predictions, a quality of service indicator of the second channel, and a load indicator of the second channel. ### Claim 17 (depends on 15) The computer program product according to claim 15, wherein the first frequency is below 6 GHz, and the second frequency is above 6 GHz. ### Claim 18 (depends on 15) The computer program product according to claim 15, wherein determining the rate of occurrence for monitoring the second channel comprises determining a lower rate of occurrence if the channel conditions of the second channel are predicted to not be favorable for offloading the communication. ### Claim 19 (depends on 15) The computer program product according to claim 15, wherein predicting whether the channel conditions of the second channel are favorable for offloading the communication comprises predicting whether at least one of a line-of-sight condition or sufficient reference-signal-strength indicator is available for the second channel. ### Claim 20 (depends on 15) The computer program product according to claim 15, wherein measuring channel conditions of the first channel comprises measuring at least one of a reference-signal-strength indicator, a delay spread indicator, and a proportion of channel impulse response energy in a first tap of a channel impulse response.