Mobile equipment based filtering for packet radio service
DC CAFCFirst Claim
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1. A method comprising:
- calculating a default forgetting factor based on a parameter received in a broadcast message;
wirelessly receiving, at a mobile equipment and from a network, an indication of signal quality experienced by the mobile equipment;
modifying the default forgetting factor to set a finite length of a filter as a function of the received indication of signal quality;
filtering a sequence of link quality measurement data using the finite length filter; and
transmitting an indication of the filtered link quality measurement data to the network.
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Abstract
A method for operating a mobile equipment (ME 10) in a wireless network (12) includes determining a parameter that is indicative of a signal quality experienced by the ME, such as by determining a speed of the ME; calculating in the ME an indication of link quality, the calculation employing a filtering operation having a filter length that is a function of the determined parameter, such as speed or derivative of the speed of the ME; and reporting the calculated indication of link quality to the wireless network. The step of determining includes steps of (a) deriving an indication of ME speed in the wireless network; and (b) transmitting the speed indication to the ME using a point-to-point message.
27 Citations
17 Claims
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1. A method comprising:
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calculating a default forgetting factor based on a parameter received in a broadcast message; wirelessly receiving, at a mobile equipment and from a network, an indication of signal quality experienced by the mobile equipment; modifying the default forgetting factor to set a finite length of a filter as a function of the received indication of signal quality; filtering a sequence of link quality measurement data using the finite length filter; and transmitting an indication of the filtered link quality measurement data to the network. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A mobile equipment comprising:
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a receiver adapted to wirelessly receive from a network an indication of signal quality experienced by the mobile equipment and to receive from the network a broadcast message that includes a parameter; a processor adapted to calculate a default forgetting factor based on the parameter received in the broadcast message and to modify the default forgetting factor to implement a filter for filtering a sequence of link quality measurement data, said filter having a finite filter length that is a function of said received indication of signal quality; and a transmitter, coupled to the processor, adapted to transmit an indication of the filtered link quality measurement data to the network. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A computer readable medium encoded with a computer program and executable by a controller of a mobile equipment for executing measurement data filtering operations, the operations comprising:
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calculating a default forgetting factor based on a parameter received in a broadcast message; modifying the default forgetting factor to set a finite length of a filter as a function of an indication of signal quality experienced by the mobile equipment, said indication of signal quality received in a wireless message; filtering a sequence of link quality measurement data using the finite length filter; and transmitting an indication of the filtered link quality measurement data to the network. - View Dependent Claims (14, 15, 16)
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17. An apparatus comprising:
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receiving means for wirelessly receiving from a network an indication of signal quality experienced by the mobile equipment and a broadcast message that includes a parameter; processing means for calculating a default forgetting factor based on the parameter received in the broadcast message and for modifying the default forgetting factor to implement a filter for filtering a sequence of link quality measurement data, said filter having a finite filter length that is a function of said received indication of signal quality; and transmit means for transmitting an indication of the filtered link quality measurement data to the network.
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Specification