Fast notification access channel for realtime users in EGPRS networks
First Claim
1. A method of accessing a shared cellular packet data traffic channel in a cellular packet data network, the method comprising:
- transmitting, from a mobile terminal, a pre-assigned tone over a notification access channel (NACH), said NACH comprising one or more selected timeslots of a packet random access channel (PRACH);
periodically monitoring said NACH for said tone at the network; and
upon receiving said tone on said NACH at the network, allocating uplink on the shared cellular packet data traffic channel to the mobile terminal transmitting said tone.
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Accused Products
Abstract
A Fast Notification Access Channel is used in a system for multiplexing users on a shared cellular packet data traffic channel in a cellular packet data network system. The system includes a mobile station having a mobile station control system. The mobile station control system transmits packet data on the shared packet data traffic channel to a base station until it reaches an inactive period and upon having additional data to transmit transmits a notification signal to the base station, the notification signal uniquely identifying the mobile station on the shared cellular packet data traffic channel. A network control system is operatively associated with the base station. The network control system allocates uplink on the shared packet data channel to the mobile station after receiving the notification signal until the mobile station reaches the inactive period.
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Citations
34 Claims
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1. A method of accessing a shared cellular packet data traffic channel in a cellular packet data network, the method comprising:
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transmitting, from a mobile terminal, a pre-assigned tone over a notification access channel (NACH), said NACH comprising one or more selected timeslots of a packet random access channel (PRACH);
periodically monitoring said NACH for said tone at the network; and
upon receiving said tone on said NACH at the network, allocating uplink on the shared cellular packet data traffic channel to the mobile terminal transmitting said tone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A cellular packet data network having a base station, a mobile terminal, and a shared cellular packet data traffic channel, said system comprising:
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a notification access channel (NACH) comprising one or more selected timeslots of a packet random access channel (PRACH);
a mobile control system associated with the mobile terminal that generates and transmits a pre-assigned tone over said NACH to request access to the shared cellular packet data traffic channel; and
a network control system associated with the base station that periodically monitors said NACH and allocates uplink on the shared cellular packet data traffic channel to the mobile terminal upon receiving said pre-assigned tone. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A mobile terminal for use in a cellular packet data network having a plurality of users multiplexed on a shared channel, the mobile terminal comprising:
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a control system to generate a pre-assigned tone that identifies the mobile terminal;
a transmitter that transmits said pre-assigned tone over a notification access channel (NACH), said NACH comprising one or more selected timeslots of a packet random access channel (PRACH);
a receiver that receives a resource allocation on the shared channel from the network. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A base station for use in a cellular packet data network having a plurality of users multiplexed on a shared channel, the base station comprising:
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a control system to allocate a notification access channel (NACH) comprising one or more selected timeslots of a packet random access channel (PRACH);
said control system operative to monitor said NACH for one or more pre-assigned tones simultaneously, each said pre-assigned tone uniquely identifying a different mobile terminal in the network. - View Dependent Claims (30, 31, 32, 33, 34)
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Specification