Techniques for determining a handoff profile between telecommunications networks

摘要

Techniques are disclosed for evaluating an ongoing VoIP over WiFi call for purposes of determining when to hand it off to a circuit-switched cellular network connection. 802.11 WiFi call quality values X(i) over a sampled time period (N) of (j) samples for an ongoing telephone call over an 802.11 WiFi communication link are obtained and stored. An instantaneous annoyance value a(j) for each of the stored call quality values X(j) within sampled time period (N) is calculated. A current accumulated annoyance value A(i) by summing the instantaneous annoyance values a(j) is also calculated. The accumulated annoyance value A(i) is compared to a handoff threshold value H(i). A handoff of the telephone call from the 802.11 WiFi communication link to a circuit-switched cellular communication link is initiated when the accumulated annoyance value A(i) is greater than the handoff threshold value H(i).

主权项

1. At least one machine-readable non-transitory medium comprising a set of instructions that in response to being executed on a computing device cause the computing device to:
obtain instantaneous 802.11 WiFi call quality values for a telephone call over an 802.11 WiFi communication link over a time period N, wherein N defines a relevant timespan within which to store the instantaneous WiFi call quality values for calculations; calculate instantaneous annoyance values based on a plurality of the instantaneous WiFi call quality values for N; define a first call quality threshold value (C0) wherein WiFi call quality values less than or equal to C0 indicate good call quality such that the instantaneous annoyance values set to zero (0); calculate an instantaneous accumulated annoyance value by summing the instantaneous annoyance values; determine whether the instantaneous accumulated annoyance value exceeds an instantaneous handoff threshold value; and initiate a handoff of the telephone call from the 802.11 WiFi communication link to a circuit-switched cellular communication link when the instantaneous accumulated annoyance value is greater than the instantaneous handoff threshold value.