Method and system for access gateway selection
First Claim
1. A method performed by a radio access network (RAN), wherein the RAN comprises a base transceiver station (BTS), wherein the RAN selects an access gateway to serve a wireless communication device (WCD), and wherein the RAN maintains a profile associated with the WCD containing a representation of network usage history of the WCD, the method comprising:
- for each access gateway of a plurality of access gateways, measuring a respective round trip latency between the RAN and the access gateway;
performing a comparison of the measured respective round trip latencies, wherein performing the comparison comprises rank ordering, from lowest to highest latency, the plurality of access gateways based on their measured respective round trip latencies;
receiving, at the BTS, an incoming call indication from the WCD associated with an incoming call from the WCD;
based at least on the comparison of the measured respective round trip latencies and the representation of network usage history of the WCD, selecting as the access gateway one of the plurality of access gateways that has a measured respective round trip latency greater than or equal to a median measured respective round trip latency of the plurality of access gateways; and
assigning the incoming call from the WCD to the selected access gateway.
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Accused Products
Abstract
Methods and systems are defined that support, in a radio access network, measuring the latency between the radio access network and each respective access gateway of a plurality of access gateways. From these measurements, a list of access gateways, rank ordered from lowest to highest latency, is created. If the radio access network receives an incoming call indication designating that an associated incoming call is latency-sensitive, the radio access network will preferably assign the incoming call to an access gateway that is one with a measured respective round trip latency less than or equal to a median measured respective round trip latency. Additionally, the radio access network maintains a profile for at least some wireless communication devices that use its services. When the radio access network receives an incoming call indication for a wireless communication device, the radio access network preferably determines, from the wireless communication device'"'"'s profile, if the wireless communication device has a history of heavy network usage. If the wireless communication device has a history of heavy network usage, the radio access network preferably assigns the incoming call to an access gateway that is one with a measured respective round trip latency greater than or equal to the median measured respective round trip latency.
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Citations
17 Claims
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1. A method performed by a radio access network (RAN), wherein the RAN comprises a base transceiver station (BTS), wherein the RAN selects an access gateway to serve a wireless communication device (WCD), and wherein the RAN maintains a profile associated with the WCD containing a representation of network usage history of the WCD, the method comprising:
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for each access gateway of a plurality of access gateways, measuring a respective round trip latency between the RAN and the access gateway; performing a comparison of the measured respective round trip latencies, wherein performing the comparison comprises rank ordering, from lowest to highest latency, the plurality of access gateways based on their measured respective round trip latencies; receiving, at the BTS, an incoming call indication from the WCD associated with an incoming call from the WCD; based at least on the comparison of the measured respective round trip latencies and the representation of network usage history of the WCD, selecting as the access gateway one of the plurality of access gateways that has a measured respective round trip latency greater than or equal to a median measured respective round trip latency of the plurality of access gateways; and assigning the incoming call from the WCD to the selected access gateway. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A radio access network (RAN) comprising:
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a central processing unit (CPU); a memory storing a profile associated with a wireless communication device (WCD), the profile containing a representation of network usage history of the WCD; a base transceiver station (BTS) having at least one antenna radiating to define at least one wireless coverage area; and machine instructions stored in the memory and executable by the CPU to perform the steps of; for each access gateway of a plurality of access gateways, measuring a respective round trip latency between the RAN and the access gateway; storing, in the memory, representations of the measured respective round trip latencies; receiving, at the BTS, an incoming call indication from the WCD, wherein the incoming indication is associated with an incoming call from the WCD, and wherein the WCD uses the at least one wireless coverage area to communicate with the BTS; performing a comparison of the measured respective round trip latencies, wherein performing the comparison of the measured respective round trip latencies comprises rank ordering, from lowest to highest latency, the plurality of access gateways based on their measured respective round trip latencies; based at least on the comparison of the measured respective round trip latencies and the representation of network usage history of the WCD, selecting an access gateway with a measured respective round trip latency greater than or equal to a median measured respective round trip latency of the plurality of access gateways; and assigning the incoming call from the WCD to the selected access gateway. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification