Source: http://patents.com/us-9854501.html
Timestamp: 2018-09-25 15:41:12
Document Index: 288344414

Matched Legal Cases: ['Application No. 201310241494', 'Application No. 201480010128', 'Application No. 201480015162', 'Application No. 201480015444', 'Application No. 14715154', 'Application No. 201310241494', 'Application No. 201310241494', 'Application No. 201310241494', 'Application No. 2013102414948', 'Application No. 201310241494']

US Patent # 9,854,501. Radio spectrum utilization - Patents.com
United States Patent 9,854,501
Mitchell , et al. December 26, 2017
Mitchell; Paul W. A. (Seattle, WA), Garnett; Paul W. (Albany, NY), Hassan; Amer A. (Kirkland, WA)
Family ID: 1000003031410
13/828,820
US 20140274090 A1 Sep 18, 2014
Current CPC Class: H04W 40/20 (20130101); H04W 24/02 (20130101); H04W 72/048 (20130101); H04W 72/082 (20130101); H04W 72/0453 (20130101)
Current International Class: H04W 40/20 (20090101); H04W 24/02 (20090101); H04W 72/04 (20090101); H04W 72/08 (20090101)
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Primary Examiner: Nguyen; Dinh P
1. A method, comprising: monitoring a direction of movement of a mobile device from a first location, the mobile device having cellular capabilities; based at least in part on the direction of movement of the mobile device, determining a second location and an anticipated arrival time of the mobile device at the second location; identifying channel information associated with a set of channels available to the mobile device at the second location at the anticipated arrival time, the channel information including expiration times of networks on the set of channels; prior to arrival of the mobile device at the second location, based at least in part on the anticipated arrival time of the mobile device and the expiration times of the networks, contacting an access point at the second location regarding establishment of a new network on a particular channel of the set, the new network being available to the mobile device at the anticipated arrival time; and, sending a channel suggestion of the particular channel to the mobile device for the mobile device to use the new network for data communication upon arrival at the second location.
2. The method of claim 1, wherein the method further comprises: evaluating the expiration times for overlapping network coverage at the anticipated arrival time; and, contacting the access point regarding the establishment of the new network responsive to determining that the new network is needed to maintain the overlapping network coverage at the anticipated arrival time.
5. The method of claim 1, further comprising: prior to arrival of the mobile device at the second location, determining a change of direction of the mobile device; and, determining an updated second location in response to the change in direction.
6. The method of claim 5, further comprising: providing an updated channel suggestion to the mobile device in response to determining the updated second location.
14. A system, comprising: multiple cell towers configured to cooperatively provide cellular service in a service area; and, at least one computing device configured to: monitor use of the cellular service by a mobile device and monitor a direction of movement of the mobile device from a first geographic location toward a second geographic location within the service area, based at least in part on an anticipated arrival time of the mobile device at the second geographic location, obtain a listing of channels available for use at the anticipated arrival time at the second geographic location, prior to arrival of the mobile device at the second geographic location, send content relating to individual channels from the listing to the mobile device, the content including time limits of availability of networks on the individual channels, and, instruct the mobile device to, as the mobile device approaches the second location, utilize at least one of the individual channels from the listing to accomplish non-cellular data communication while maintaining cellular voice communication on the cellular service.
16. The system of claim 14, wherein the at least one computing device is further configured to: maintain the listing of channels; and synchronize the listing of channels with a regulatory database that associates geographic locations and radio white space channels.
19. A system, comprising: a processing device; and a storage device storing computer-executable instructions which, when executed by the processing device, cause the processing device to: monitor a direction of movement of a mobile device from a first geographic location toward a second geographic location; based at least in part on the direction of movement of the mobile device, obtain a listing of channels at the second geographic location and expiration times of networks on the channels; based at least in part on the expiration times, determine individual channels that have networks available to the mobile device at an anticipated time of arrival of the mobile device at the second geographic location; send content relating to the individual channels to the mobile device, the content including time constraints on use by the mobile device of the networks; and, instruct the mobile device to, upon arrival at the second geographic location, utilize at least one of the individual channels.
21. The system of claim 19, wherein the computer-executable instructions further cause the processing device to: continue to monitor further movements of the mobile device; and, provide an updated channel suggestion to the mobile device based on the further movements.
The described implementations relate to radio channel utilization. The channels can include any channels in the radio spectrum that can be utilized to accomplish communication between devices. The channels can include radio white space channels. As used herein, the term "radio white space" can include TV white space and/or any other radio white space.
Radio channels can include radio white space channels, cellular channels, Wi-Fi channels, Bluetooth channels, etc. Radio white space channels can include TV white space channels and/or other radio white space channels. As used herein a "TV white space channel" means a channel or channel range that was reserved for TV broadcasting, but which is not actually used for TV broadcasting in a particular geographic region. Similarly, "radio white space channel" means a channel or channel range that was reserved for TV broadcasting, for other radio broadcasting, or two way radio communications, but which is not actually used in such manner in a particular geographic region. Stated another way, radio white space can refer to allocated but unused radio spectrum.
For purposes of explanation consider introductory FIG. 1, which shows a scenario involving a system 100 where utilization of radio white space channels can be accomplished. System 100 can include a wireless access point (AP) 102, a regulatory database 104 and intermediary 106. Assume for purposes of explanation that the AP is at hypothetical location "B". Assume further that the AP wants to establish a wireless network and as such wants to know what channels (e.g., channels are available). Note that while specific examples of APs are utilized for purposes of explanation, from one perspective an AP can be any kind of device that can establish a wireless network on a relatively temporary basis (e.g., smart phone) or a relatively long term basis (e.g., router).
In this implementation, the intermediary 106 can be in communication with the regulatory database 104 as indicated at 110. The intermediary can maintain a dynamic database of channels (hereinafter, "dynamic database") 112 with location specific information from the regulatory database. As indicated at 114, the intermediary can return the set of location-based available radio white space channels 114 to the AP at 116. Further, the intermediary can return additional information 118 about the set of location-based available radio white space channels 114. For instance, in this case, for location B, hypothetical channels 51, 53, 55, and 57 are available. Further, the additional information 118 (on a per row basis) indicates that channel 51 is experiencing "High Interference", channel 53 is experiencing "low Interference", channel 55 is experiencing "medium Interference", and channel 57 is experiencing "medium Interference". (This is just one example of additional information. Additional examples are described below).
Instance 3 shows the channel information (e.g., feedback) provided by the AP 102 reflected in the dynamic database 112. Specifically, the information is evident at row 122. The additional information 118 relating to channel 53 recites "Network established by AP 102". While in the illustrated example the additional information is relatively brief for purposes of explanation, the additional information can include other details, such as time the network was established, duration of the network, allowed power, etc. The additional information 118 of the dynamic database 112 can be useful for other devices that are attempting to establish a network at location B or utilize a network at location B. One such example is described below relative to FIG. 2.
At Instance 3, the mobile device 202 can utilize the content 208 from the intermediary 106 to identify a network for data communication. Toward this end, the mobile device can evaluate the content to determine what actions to take. For instance, the mobile device 202 could decide to start with channel 53 based upon the associated additional information that a "Network established by AP 102" is present on that channel. For example, the mobile device could ping AP 102 on channel 53 (probe request). The AP could reply with a probe response. Once authentication is completed, the mobile device can communicate data over the network. This process could be faster and/or less resource intensive than scanning each of the available channels for a network. However, in some cases, the query may return only channels and not network information for the location. In such a case, the mobile device 202 can perform active and/or passive scanning on the returned available channels to identify a network. Further, even in instances where the returned content indicates channels with networks, the mobile device may scan some or all of the returned available channels to find additional networks and/or to find additional information about its environment.
At Instance 3, the mobile device 202 can communicate information back to the intermediary 106 as indicated at 210. Stated another way, the mobile device can investigate its environment and send the results to the intermediary. In this case, the information relative to channel 53 indicates that the mobile device is "utilizing the network, quality good" as indicated on row 122. Relative to channel 55 the information indicates "No network detected". The intermediary 106 can utilize this information to update dynamic database 112. Thus, even more information is available for subsequent location-based queries and/or for other uses.
In this implementation, relative to an individual radio white space channel, the regulatory database 104 may allow multiple combinations of constraints. While not shown relative to the regulatory database 104 due to space limitations, several such examples are illustrated relative to the dynamic database 308. For instance, looking at row 312, radio white space channel 51 can be used at a first power level P.sub.1 for a first duration or time T.sub.1 or a second power level P.sub.2 for a second duration T.sub.2. For instance, power P.sub.1 may be a relative higher power than power P.sub.2. For example, power P.sub.1 may be 0.1 Watts and power P.sub.2 might be 0.01 Watts. Correspondingly, duration T.sub.1 may be less than duration T.sub.2 (e.g., more power for less time or lower power for more time). For example, duration T.sub.2 could be 2 hours and duration t.sub.3 could be 24 hours. Thus, an individual radio white space channel can be used at a lower power for a longer duration or a higher power for a shorter duration. Further, in this example, specific alternative constraints or conditions of use are provided.
In one implementation, when the AP 302(1) queries the spectrum manager 310, the spectrum manager can return a set of channels/channels (f.sub.1,t.sub.1), (f.sub.2,t.sub.2), . . . (f.sub.n, t.sub.n). In return for being able to select from these options, the AP has to query the spectrum manager for channel f.sub.1 in period or duration t.sub.1.
In another case, the spectrum manager 310 can return (f.sub.1, f.sub.2, . . . , f.sub.n)(T). In this case, the AP 302(1) agrees to use the channels assigned and agrees to query the spectrum manager in duration T. If T is null, the device queries the DB in a default time period (24 hours in the US).
Another implementation can tie the channel of specified AP queries to power levels on the utilized channel. For example, the AP 302(1) can query spectrum manager 310 for radio white space channels. Stated another way, the spectrum manager can return a set of channels (f.sub.1, p.sub.1,t.sub.1), (f.sub.1, p.sub.2, t.sub.2). As a condition of using the channel(s) the AP has to query the spectrum manager 310 for channel f.sub.1 in period t.sub.1 when using power level p.sub.1 and period t.sub.2 when using power p.sub.2. Thus, the higher the power level of use the more frequent the AP has to check in with the spectrum manager.
Row 328 relates to channel LTE2. In this case, duration T.sub.4 can be dependent upon reachability of the device that wants to use the channel. For instance, the duration may be six months based upon the condition that the device is available (e.g., can be contacted) at all times within one hour. This can allow the use to be stopped if conditions change, such as if the licensed use starts during the duration. Of course, while specific examples are illustrated, the additional information in the dynamic database 308 can relate to any information that can be useful to allow channels to be utilized efficiently.
Now assume that AP 302(2) queries the spectrum manager 310 with its location C. The spectrum manager can supply some or all of the information (rows 332-338) relating to location C to the AP. In this case, assume that AP 302(2) establishes a network on channel 52 and reports this information back to the spectrum manager 310. Further, assume that AP 302(2) agrees to utilize channel 52 at P.sub.1 for duration T.sub.2 (2 hours in this example). This information will be reflected in updates to the dynamic database 308 reflected in FIG. 4 (not all of the information can be illustrated due to space constraints on the drawing page).
In this example, the dynamic database 608 maintains a grid of locations 612. In this case, the grid of locations is demarcated on the horizontal axis with letters (e.g., "A", "B", and "C", etc.) and on the vertical axis with numerals (e.g., "1", "2", and "3", etc.). The grid of locations can relate locations with services available at individual locations, devices at individual locations, channels at individual locations (cellular and non-cellular channels), conditions at individual locations, and/or other information. Of course, other types of mappings between geographic locations and services available at individual locations, devices at individual locations, conditions at individual locations, and/or other information can be utilized.
Skipping ahead to location B2, the dynamic database 608 indicates that AP 602(1) is at this location. The available networks include SP1 and SP2 4G networks as well as 2.4 Gigahertz Wi-Fi and channel 51 radio white space provided by AP 602(1). Further, the other information section indicates high ("T") interference on the 2.4 Gigahertz network. Additionally, the network provided by AP 602(1) on radio white space channel 51 expires in 12 hours.
Looking now at location C2, the dynamic database 608 indicates that AP 602(2) is at this location. The available networks include SP1 and SP2 4G networks as well as 2.4 Gigahertz Wi-Fi and channel 55 radio white space provided by AP 602(2). Further, the other information section indicates high ("T") interference on the 2.4 Gigahertz network. Additionally, the network provided by AP 602(2) on radio white space channel 55 expires in 3 hours.
Skipping ahead to location B3, the dynamic database 608 indicates that AP 602(3) is at this location. The available networks include SP1 and SP2 4G networks as well as 2.4 Gigahertz Wi-Fi provided by AP 602(3). Further, the other information section indicates high (".uparw.") interference on the 2.4 Gigahertz network.
Further, mobile device 702 is now in the grid of locations 612 at location A2. This is also reflected in the dynamic database 608 in row A2 under `devices`. The mobile device 702 can use the dynamic database 608 to identify available networks at its location. Further, the mobile device can use the dynamic database to identify available channels at its location in the event that the mobile device wanted to function as an AP.
Further, as the mobile device 702 continues across location B2, the mobile device can obtain information about location C2 from dynamic database 608. As such, the mobile device can be ready to transition from the network on radio white space channel 51 to the network on radio white space channel 55. Further, in some cases the mobile device does not need to scan channels, it can simply get the information about the networks at the location. It can then ping the device indicated on the channel on the dynamic database's network listing (e.g., "AP 602(2)" on channel 55"). These features can avoid the issue of `dropping` connections and then looking for a new connection. Instead, the mobile device can seamlessly transition with no interruption of service (or an interruption that is so short that it is likely imperceptible to the user).
Similarly, as the mobile device approaches location C2, the spectrum manager 610 can provide information from the dynamic database 608 about the networks at this location. This information can allow the mobile device to make a seamless transition between networks. In a further implementation, the spectrum manager 610 and/or the mobile device may consider various parameters to accomplish `smart transitions`. For instance, one parameter can relate to latency sensitivity. For example, voice communication tends to be latency sensitive (e.g., the user does not want to lose words during the conversation). On the other hand, video downloading tends to not be as sensitive because data communication can get ahead of data playback and content can be buffered or cached for a few seconds before it is played. Thus, the cache can potentially bridge any interruption in service so that playback is unaffected.
FIG. 8 shows system 800 that can enable the dynamic database concepts described above. Further, system 800 can include multiple devices 802 that can be similar to the devices described above. For example, device 802(1) can be similar to mobile device 202, 402, and/or 702. Further, device 802(2) can be similar to APs 102, 302, and/or 602. Device 802(3) can be a computing device that can be employed by various entities, such as regulatory database 104, intermediary 106, service provider 304, or a third party. (In this discussion, the use of a designator with the suffix, such as "(1)", is intended to refer to a specific device instance. In contrast, use of the designator without a suffix is intended to be generic). Of course, not all device implementations can be illustrated and other device implementations should be apparent to the skilled artisan from the description above and below.
The term "device", "computer", or "computing device" as used herein can mean any type of device that has some amount of processing capability and/or storage capability. Processing capability can be provided by one or more processors (such as processor 806) that can execute data in the form of computer-readable instructions to provide a functionality. Data, such as computer-readable instructions, can be stored on storage, such as storage/memory 808 that can be internal or external to the computer. The storage can include any one or more of volatile or non-volatile memory, hard drives, flash storage devices, and/or optical storage devices (e.g., CDs, DVDs, etc.), among others. As used herein, the term "computer-readable media" can include signals. In contrast, the term "computer-readable storage media" excludes signals. Computer-readable storage medium/media includes "computer-readable storage devices." Examples of computer-readable storage devices include volatile storage media, such as RAM, and non-volatile storage media, such as hard drives, optical discs, and flash memory, among others.
In the illustrated implementation, devices 802 are configured with a general purpose processor 806 and storage/memory 808. In some configurations, a device can include a system on a chip (SOC) type design. In such a case, functionality provided by the device can be integrated on a single SOC or multiple coupled SOCs. One or more processors can be configured to coordinate with shared resources, such as memory, storage, etc., and/or one or more dedicated resources, such as hardware blocks configured to perform certain specific functionality. Thus, the term "processor" as used herein can also refer to central processing units (CPU), graphical processing units (CPUs), controllers, microcontrollers, processor cores, or other types of processing devices suitable for implementation both in conventional computing architectures as well as SOC designs.
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