Blind Detection of VAMOS Capable Mobile Stations
First Claim
1. A method of blindly detecting the capability of a mobile station to receive Voice services over Adaptive Multi-user channels on One Slot, VAMOS, transmissions, comprising:
- transmitting at least one Adaptive Quadrature Phase Shift Keying, AQPSK, modulated message having a predetermined Sub-Channel Power Imbalance Ratio, SCPIR, level to the mobile station on a control channel or non-traffic portion of a traffic channel;
monitoring the mobile station for an anticipated action responsive to the AQPSK modulated message;
determining that the mobile station is capable of VAMOS operation at the transmitted SCPIR level or higher SCPIR levels if the anticipated action is observed; and
associating with the mobile station an indication of the determined SCPIR level of VAMOS capability.
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Accused Products
Abstract
A network performs blind detection of the VAMOS capability, at or above a predetermined SCPIR level, of mobile stations. The network transmits an AQPSK modulated message having a predetermined SCPIR level on a control channel or non-traffic portion of a traffic channel, and monitors the mobile station for an anticipated action taken in response. In some embodiments, the AQPSK modulated message is repeated to increase the probability of its reception. In some embodiments, AQPSK modulated messages are transmitted at varying SCPIR levels, to determine a minimum SCPIR level at which the mobile terminal is operative in VAMOS mode. The VAMOS capability and SCPIR level of mobile stations may be recorded, so that they may later be paired for VAMOS operation.
17 Citations
25 Claims
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1. A method of blindly detecting the capability of a mobile station to receive Voice services over Adaptive Multi-user channels on One Slot, VAMOS, transmissions, comprising:
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transmitting at least one Adaptive Quadrature Phase Shift Keying, AQPSK, modulated message having a predetermined Sub-Channel Power Imbalance Ratio, SCPIR, level to the mobile station on a control channel or non-traffic portion of a traffic channel; monitoring the mobile station for an anticipated action responsive to the AQPSK modulated message; determining that the mobile station is capable of VAMOS operation at the transmitted SCPIR level or higher SCPIR levels if the anticipated action is observed; and associating with the mobile station an indication of the determined SCPIR level of VAMOS capability. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus operative in a wireless communication network, the apparatus operative to blindly detect the capability a mobile station to receive Voice services over Adaptive Multi-user channels on One Slot, VAMOS, transmissions, comprising:
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a transceiver operative to selectively transmit messages modulated using Adaptive Quadrature Phase Shift Keying, AQPSK, modulation and further operative to receive signals from a plurality of mobile stations; memory operative to store identifying information associated with a plurality of mobile stations; and one or more controllers operative to cause the transceiver to transmit at least one AQPSK modulated message having a predetermined Sub-Channel Power Imbalance Ratio, SCPIR, level to the mobile station on a control channel or non-traffic portion of a traffic channel; monitor signals received by the transceiver from the mobile station for an anticipated action responsive to the AQPSK modulated message; determine that the mobile station is capable of VAMOS operation at the transmitted SCPIR level or higher SCPIR levels if the anticipated action is observed; and store in the memory an indication of VAMOS capability and an SCPIR level. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification