RF-aware packet filtering in radio access networks that employ circuit switching
First Claim
1. A wireless communication system comprising:
- a radio access network (RAN);
a network access server (NAS) for providing an interface between the RAN and an internet protocol (IP) network; and
a data packet filter for selectively permitting the passage of a data packet from the IP network to the RAN at least in part based on radio frequency (RF) circuit state information concerning a mobile subscriber (MS) that communicates with the RAN using an airlink.
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Accused Products
Abstract
Methods and systems are provided for filtering packets in a wireless communication system in the to-mobile subscriber direction. This filtering is at least in part based on RF circuit state information. For example, a packet filter is used that either permits or denies packets from reaching a mobile subscriber based on whether there is already an established RF circuit to provide packets to the mobile subscriber. Alternatively, or in addition, the packet filter may consider the history of circuit state transitions associated with a particular mobile subscriber, the percentage (or aggregate number) of available airlink resources that are currently in use, and/or the length of time associated with the dormancy of a mobile subscriber'"'"'s RF connection. In various embodiments, the packet filter may cause one or more packets to be sent to a mobile subscriber using a special data channel that does not require the establishment of an RF circuit.
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Citations
38 Claims
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1. A wireless communication system comprising:
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a radio access network (RAN);
a network access server (NAS) for providing an interface between the RAN and an internet protocol (IP) network; and
a data packet filter for selectively permitting the passage of a data packet from the IP network to the RAN at least in part based on radio frequency (RF) circuit state information concerning a mobile subscriber (MS) that communicates with the RAN using an airlink. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A wireless communication system comprising:
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a radio access network (RAN);
a network access server (NAS) for providing an interface between the RAN and an internet protocol (IP) network; and
a data packet filter for selectively permitting the passage of a data packet from the IP network to the RAN at least in part based on a determined usage of available radio frequency (RF) resources in the wireless communication system. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A wireless communication system comprising:
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a radio access network (RAN);
a network access server (NAS) for providing an interface between the RAN and an internet protocol (IP) network; and
a data packet filter for selectively marking and permitting the passage of a data packet from the IP network to the RAN, the marking resulting in the data packet being sent to a mobile subscriber (MS) using a special data channel. - View Dependent Claims (24, 25, 26, 27)
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28. A method for filtering data packets in a wireless communication system that comprises a radio access network (RAN), a network access server (NAS), and an internet protocol (IP) network, the method comprising:
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receiving one or more data packets destined for a mobile subscriber (MS) from the IP network;
determining radio frequency (RF) circuit state information concerning at least one of the MS and the wireless communication system; and
permitting or denying the passage of the one or more packets from the IP network to the MS based at least in part based on the determined RF circuit state information. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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36. A method for filtering data packets in a wireless communication system that comprises a radio access network (RAN), a network access server (NAS), and an internet protocol (IP) network, the method comprising:
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receiving one or more data packets destined for a mobile subscriber (MS) from the IP network;
determining whether the MS is RF-dormant; and
when the MS is RF-dormant, marking the one or more data packets from the IP network, the marking resulting in the one or more data packets being sent to the MS using a special data channel.
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37. A wireless communication system comprising:
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means for receiving one or more data packets destined for a mobile subscriber (MS) from an internet protocol (IP) network;
means for determining radio frequency (RF) circuit state information concerning at least one of the MS and the wireless communication system; and
means for permitting or denying the passage of the one or more packets from the IP network to the MS based at least in part on the determined RF circuit state information.
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38. A data packet filter for use in a wireless communication system, the data packet filter receiving one or more data packets from an internet protocol (IP) network and, based at least in part on radio frequency (RF) circuit state information concerning at least one of a mobile subscriber (MS) and the wireless communication system, permitting or denying the passage of the one or more packets from the IP network to the MS.
Specification