WO2015112173A1 - Attribution de bande radio - Google Patents

Attribution de bande radio Download PDF

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Publication number
WO2015112173A1
WO2015112173A1 PCT/US2014/013142 US2014013142W WO2015112173A1 WO 2015112173 A1 WO2015112173 A1 WO 2015112173A1 US 2014013142 W US2014013142 W US 2014013142W WO 2015112173 A1 WO2015112173 A1 WO 2015112173A1
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WO
WIPO (PCT)
Prior art keywords
aps
radio band
radio
network
controller
Prior art date
Application number
PCT/US2014/013142
Other languages
English (en)
Inventor
Louis E. Pereira
Original Assignee
Hewlett-Packard Development Company, L.P.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett-Packard Development Company, L.P. filed Critical Hewlett-Packard Development Company, L.P.
Priority to PCT/US2014/013142 priority Critical patent/WO2015112173A1/fr
Publication of WO2015112173A1 publication Critical patent/WO2015112173A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • Wi-Fi is a technology that allows an electronic client device to exchange data or connect to the internet wirelessly using radio waves.
  • Many client devices can use Wi-Fi (e.g., personal computers, video-game consoles, smartphones, etc.), and the client devices can connect to a network resource such as the Internet via a wireless network access point (AP).
  • Client devices may also connect to a network resource via a wired AP.
  • Figure 1 illustrates a diagram of an example of a system for radio band assignment according to the present disclosure.
  • Figure 2 illustrates a diagram of an example computing device according to the present disclosure
  • Figure 3 is a diagram of an example of an environment for radio band assignment according to the present disclosure.
  • Figure 4 illustrates a flow chart of an example of a method for radio band assignment according to the present disclosure.
  • Figure 5 illustrates a flow chart of an example of a method for radio band assignment according to the present disclosure.
  • Wi-Fi installations may involve coverage for multiple radio bands (e.g., 2.4 GHz, 5 GHz, etc.) in order to provide coverage for varying client devices (e.g., laptops, smartphones, PDAs, etc.).
  • Some approaches to multiple radio band coverage installation include the creation and deployment of multiple radio band APs each containing multiple, distinct radio bands (e.g., radio modules) in order to provide coverage for each required radio band.
  • a single AP may include a 2.4 GHz capability and a 5 GHz capability. Both can be working/running at the same time.
  • radio band assignment according to the present disclosure can provide for obtaining coverage without the duplication of radio bands, and APs operating full time for each radio band while still providing dynamically changing coverage as a need changes. This can reduce AP cost since only a single radio may be required in each AP.
  • radio band assignment in accordance with the present disclosure can include a controller managing APs within a network and assigning and configuring radio bands to those APs while maintaining an omniscient view of the network. This can allow for radio band assignment and configuration of APs that change in response to changes in the network (e.g., dynamic radio band assignment and configuration).
  • Figure 1 illustrates a diagram of an example of a system 100 for radio band assignment according to the present disclosure.
  • the system 100 can include a data store 101 , radio band assignment system 102, and/or a number of engines 103 and 104.
  • a number of an element and/or feature can refer to one or more of such elements and/or features.
  • the radio band assignment system 102 can include a controller in some examples (not illustrated in Figure 1 ), can be in communication with the data store 101 via a communication link, and can include the number of engines (e.g., collection engine 103 and assignment engine 104).
  • system 100 can include a number of APs that can, in some examples, be managed by the controller.
  • the radio band assignment system 102 can include additional or fewer engines than illustrated to perform the various functions described herein.
  • the number of engines 103 and 104 can include a combination of hardware and programming that is configured to perform a number of functions described herein (e.g., radio band assignment and/or configuration).
  • the programming can include program instructions (e.g., software, firmware, etc.) stored in a memory resource (e.g., computer readable medium (CRM), machine readable medium (MRM), etc.) as well as hard-wired program (e.g., logic).
  • a memory resource e.g., computer readable medium (CRM), machine readable medium (MRM), etc.
  • hard-wired program e.g., logic
  • the collection engine 103 can include hardware and/or a combination of hardware and programming to collect information (e.g., performance information) communicated to the controller by a number of APs.
  • the number of APs can be single band radio APs.
  • the single band radio APs can include APs capable of broadcasting on a single radio band, but also capable of switching between radio bands. For instance, an AP can broadcast at a first radio band and switch to a second radio band if instructed, for example, by a controller.
  • the number of APs can monitor multiple radio bands during idle times and capture radio band and received signal level information from transmitting client devices (e.g., laptops, smartphones, etc.). For instance, in between data transfers with client devices, the number of APs can send signals, also known as "beacons", used to listen for client device information. This information can be communicated to a controller (e.g., centralized controller) for processing with an omniscient view of a network (e.g., wireless network) including the controller, APs, and client devices.
  • a controller e.g., centralized controller
  • a network e.g., wireless network
  • the assignment engine 104 can include hardware and/or a combination of hardware and programming to assign and configure a first AP of the number of APs to a particular radio band in response to the collected information.
  • the controller collects the information, along with knowledge it has collected from neighboring APs, and can assign and configure each of the APs with a radio band to provide optimized coverage (e.g., optimized configuration, desired coverage) in radio bands required in that area to meet the needs of the client devices.
  • Optimized coverage can include, for example, optimized client device received signal strength.
  • an optimized coverage can include optimization of client device or AP performance information collected by the APs or parameters set by the controller or a system administrator, among others.
  • optimized coverage can include the reduction of RF loading. For example, if the area is already using a large number of 2.4GHz clients, and some of them are capable of 5GHz, they can be moved to reduce RF interference. Another example is optimizing AP loading. For instance, when one AP is already servicing a number of client devices but another AP is idle, the client device(s) can be assigned to a less used AP.
  • configuring an AP can include setting a radio band (e.g., a particular radio band) for the AP and/or instructing the AP to set a radio band. In some instances, this can include switching the AP to a different radio band than what it is currently broadcasting and/or instructing the AP to switch radio bands. In such an instance, this can be referred to as reconfiguring the AP. As used herein, configuring the AP includes reconfiguring the AP.
  • a radio band e.g., a particular radio band
  • Assigning the APs a radio band can include the controller determining which radio band would best suit which AP based on the collected information and any desired results (e.g., optimized client device received signal strength).
  • Assignment of an AP to a radio band (also referred to as the radio band assigned to the AP) can be used for configuration of the AP and/or instruction of the AP by the controller.
  • the controller can use information on the client device such as physical location, signal strength, and supported bands to make an assignment determination.
  • the controller can also collect and/or maintain network information such as neighboring AP location(s), current band (in use), and AP load.
  • Assignment criteria can also be determined and/or selected from a list by a network administrator during initial setup of the network. This can allow the administrator to select to use one or more of the above criteria or prevent certain criteria from being used.
  • the controller can dynamically configure APs to provide multi-radio band coverage by distributing the allocation of radio bands across multiple APs.
  • dynamically can include variable and/or constantly changing in response to a particular influence (e.g., the controller configuring APs in response to changing information gathered by the controller).
  • Figure 2 illustrates a diagram of an example computing device 208 according to the present disclosure.
  • the computing device 208 can utilize software, hardware, firmware, and/or logic to perform a number of functions described herein.
  • the computing device 208 can be any combination of hardware and program instructions configured to share information.
  • the hardware for example can include a processing resource 209 and/or a memory resource 21 1 (e.g., CRM, MRM, database, etc.).
  • a processing resource 209 can include any number of processors capable of executing instructions stored by a memory resource 21 1 .
  • Processing resource 209 may be integrated in a single device or distributed across multiple devices.
  • the program instructions e.g., computer-readable instructions (CRI)
  • CRM computer-readable instructions
  • the program instructions can include instructions stored on the memory resource 21 1 and executable by the processing resource 209 to implement a desired function (e.g., radio band assignment and/or configuration).
  • the memory resource 21 1 can be in communication with a processing resource 209.
  • a memory resource 21 1 can include any number of memory components capable of storing instructions that can be executed by processing resource 209.
  • Such memory resource 21 1 can include a non-transitory CRM or MRM.
  • Memory resource 21 1 may be integrated in a single device or distributed across multiple devices. Further, memory resource 21 1 may be fully or partially integrated in the same device as processing resource 209, or it may be separate but accessible to that device and
  • the computing device 208 may be implemented on a participant device, on a server device, on a collection of server devices, and/or a combination of the user device and the server device.
  • the memory resource 21 1 can be in communication with the processing resource 209 via a communication link (e.g., a path) 210.
  • the communication link 210 can be local or remote to a machine (e.g., a computing device) associated with the processing resource 209. Examples of a local communication link 210 can include an electronic bus internal to a machine (e.g., a computing device) where the memory resource 21 1 is one of volatile, non-volatile, fixed, and/or removable storage medium in communication with the processing resource 209 via the electronic bus.
  • a number of modules 213 and 214 can include CRI that when executed by the processing resource 209 can perform a number of functions.
  • the number of modules 213 and 214 can be sub-modules of other modules.
  • the collection module 213 and the assignment module 214 can be sub-modules and/or contained within the same computing device.
  • the number of modules 213 and 214 can comprise individual modules at separate and distinct locations (e.g., CRM, etc.).
  • Each of the number of modules 213 and 214 can include instructions that when executed by the processing resource 209 can function as a corresponding engine as described herein.
  • the collection module 213 can include instructions that when executed by the processing resource 209 can function as the collection engine 103.
  • the assignment module 214 can include instructions that when executed by the processing resource 209 can function as the assignment engine 1 14.
  • Figure 3 is a diagram of an example of an environment 320 for radio band assignment according to the present disclosure.
  • environment 320 can include, for example, a high density deployment such as those used in hospitality and education (e.g., dorm rooms, conference rooms, etc.).
  • Environment 320 includes a number of areas (e.g., rooms) 324-1 , 324-2,..., 324-N (hereinafter collectively referred to as areas 324). Environment 320 may include, for example, hotel rooms on a hotel floor, dorm rooms within a dormitory, offices within a floor of an office building, etc. Examples are not so limited, however. In some examples, environment 320 can include a network (e.g., a wireless network). Each room can include an AP 322-1 , 322-2,..., 322- N (hereinafter collectively referred to as APs 322). APs 322 can include, for example, personal access points (e.g., walljack APs) and can provide both wired and wireless access to the environment 320, and in turn, access to a network resource (e.g., the Internet).
  • a network resource e.g., the Internet
  • Each of the APs 322 can include a range of service 332-1 , 332- 2,... 332-N (hereinafter collectively referred to as ranges 332); in the example illustrated in Figure 3, ranges 332 include wireless ranges.
  • the range of a Wi-Fi AP can depend, for example on hardware being used, protocol employed, strength of a client device's transmitter, and the nature of obstructions and interference in a surrounding area, for example.
  • room 324-1 includes AP 322-1 with a range of 332- 1 and a client device 326 with a particular radio band capability (e.g., 2.4GHz).
  • Room 324-2 includes AP 322-2 with a range of 332-2, a client device 328 with the same radio band capability as client device 326, and a client device 330 with a different radio band capability (e.g., 5GHz) than client devices 326 and 328.
  • Both AP 322-1 and AP 322-2 report the presence of all three client devices 326, 328, 330 to controller 331 since the three client devices 326, 328, 330 are within range of AP 322-1 (e.g., via range 332-1 ) and AP 322-2 (e.g., via range 332-2).
  • AP 322-1 reports to controller 331 a stronger received signal (e.g., power present in a radio signal received at APs 322) from client device 326 in room 324-1 and weaker received signals from client devices 328 and 330 in room 324-2.
  • AP 322-2 reports to controller 331 a stronger received signal from client devices 328 and 330 in room 324-2 and a weaker received signal from client device 326 in room 322-1 .
  • APs 322-1 and 322-2 can also report information to controller 331 including, for example, physical location of client devices 326, 328, and 330 and presence of any other client devices, among others. Controller 331 can gather this collected information, for example, via collection engine 103.
  • Controller 331 using the information collected by the APs 322-1 and 322-2, can analyze and process the information to determine an
  • controller 331 can assign and configure AP 322- 1 to the radio band associated with client devices 326 and 328 (e.g., 2.4 GHz), and both client devices 326 and 328 can associate with AP 322-1 .
  • AP 322-2 can be assigned and configured to the band associated with client device 330 (e.g., 5 GHz), and client device 330 can associate with AP 322-2.
  • the opposite assignments and configurations may occur such that AP 322-1 is assigned and configured to the radio band associated with client device 330 (e.g., 5 GHz) and AP 322-2 is assigned and configured the radio band associated with client device 326 and 328 (e.g., 2.4 GHz), for instance, if this arrangement resulted in optimized received signal strength from client devices 326, 328, and 330, as well as optimized usage of APs 322-1 and 322-2.
  • the APs can be assigned and configured in response to other desired outcomes (e.g., more APs configured to a 5 GHz radio band than to a 2.4 GHz radio band, among others).
  • a fourth client device in one of rooms 324-1 , 324-2, or 324-3 may be a determining factor as to which of two previously noted assignments solve the particular scenario.
  • controller 331 can use information gathered from AP 322-3 in room 324-3 as a factor in determining radio band assignments and configurations of APs 322-1 , 322-2, and 322-3. In such an example, two of the three APs are assigned and configured to the same radio band.
  • controller 331 may not be present in
  • APs 322 may communicate with one another to determine radio band configurations.
  • one AP may be designated as a master AP.
  • the master AP can analyze, process, assign, and configure the APs 322 to appropriate radio bands.
  • a model e.g., algorithm
  • the model and/or the master AP can consider the same or similar parameters as controller 331 when making assignment and configuration decisions for the APs 322 (e.g., received signal strength, location, etc.).
  • the controller, master AP, and or model may work together.
  • the master AP may assign a radio band to an AP, but the controller may configure the AP with that assigned radio band or vice versa, among others.
  • the controller may assign APs, configure APs, or both.
  • Figure 4 illustrates a flow chart of an example of a method 429 for radio band assignment according to the present disclosure.
  • information is gathered by AP1 and AP2, respectively.
  • AP1 and AP2 can include APs within a same network or system, for example.
  • AP1 and AP2 are part of a network that includes client devices, a controller, and other APs.
  • AP1 and AP2 can be single radio band APs with a capability of switching between multiple bands. In some instances, more than two APs gather infornnation. Infornnation gathered by AP1 and AP2 can include, for example, received signal strength of client devices within a same network, signal strength/level of the AP and/or other APs within the same network, location of client devices and other APs within the same network, how loaded the AP and other APs within the same network are, among others.
  • a controller collects (e.g., via collection engine 103) and processes the information gathered by AP1 and AP2. Collecting the information can include the controller requesting information from AP1 , AP2, and/or any other APs within a network. In response, the APs can send the requested information to the controller. In some examples, the APs can continuously or periodically send information to the controller, such that the controller can dynamically process the incoming information. For instance, as new information comes in, the controller can process the information and make decisions regarding assignment and configuration of APs within the network.
  • the controller makes a decision regarding which AP should be assigned and configured to which radio band (e.g., via assignment engine 104). For example, the controller determines if AP1 is best assigned to a first radio band (e.g., band 1 ) and AP2 is best assigned to a second radio band (e.g., band 2). For instance, this decision may include determining whether AP1 is in range of and receives higher received signal strength from a band 1 client device than AP2, and/or if AP2 is in range of and receives higher received signal strength from a band 2 client device than AP1 .
  • a first radio band e.g., band 1
  • AP2 is best assigned to a second radio band (e.g., band 2).
  • this decision may include determining whether AP1 is in range of and receives higher received signal strength from a band 1 client device than AP2, and/or if AP2 is in range of and receives higher received signal strength from a band 2 client device than AP1
  • band 1 is assigned to AP1
  • band 2 is assigned to AP2 at 440.
  • AP1 can be configured by the controller to band 1 and AP2 can be configured by the controller to band 2.
  • FIG. 5 illustrates a flow chart of an example of a method 550 for radio band assignment according to the present disclosure.
  • the method 550 includes receiving and analyzing captured radio band and received signal level information (e.g., via collection engine 103).
  • a controller can receive and analyze captured radio band and received signal level information associated with a first transmitting client device and a second transmitting client device within a network.
  • analyzing the captured radio band and signal level information can determining a radio band to assign to each of the number of single radio APs, such that the assigned radio bands optimize network coverage of the number of APs.
  • the captured radio band and received signal level information can be collected at a number of single radio band personal APs within the network, for example.
  • the controller can be a centralized controller, such that the management of client devices and/or APs within the network is handled entirely at the centralized controller.
  • the centralized controller can, in some instances, facilitate communication between the number of single radio band personal APs.
  • APs may communicate statuses or other parameters with one another, via the controller, for example.
  • the method 550 includes assigning and configuring a first single radio band personal AP to a first radio band.
  • the first single radio band person AP can be assigned to the first radio band, which may be associated with the first transmitting client device, based on the received and analyzed radio band and received signal level information.
  • the method 550 includes assigning and configuring a second single radio band personal AP to a second radio band.
  • the second single radio band person AP can be assigned to the second radio band, which may be associated with the second transmitting client device, based on the received and analyzed radio band and received signal level information.
  • the first radio band and the second radio band are different radio bands (e.g., 2.4 GHz and 5 GHz); however, in other examples, the first radio band and the second radio band can be the same radio band depending on the first and the second transmitting client devices (e.g., if both are PDAs utilizing a 2.4 GHz radio band).
  • assigning and configuring the first one and the second one of the number of single radio band personal APs can include dynamically assigning and configuring the first one and the second one of the number of single radio band personal APs in response to updated captured radio band and received signal level information received and analyzed at the centralized controller. For instance, if a third transmitting device begins communicating with the network, this can be communicated to the controller by an AP, and in response, the controller can dynamically assign and configure an AP to handle the new transmitting client device.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon l'invention, une attribution de bande radio peut consister à recueillir des informations capturées par un point d'accès, et à attribuer et configurer le point d'accès sur la base des informations recueillies.
PCT/US2014/013142 2014-01-27 2014-01-27 Attribution de bande radio WO2015112173A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2014/013142 WO2015112173A1 (fr) 2014-01-27 2014-01-27 Attribution de bande radio

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Application Number Priority Date Filing Date Title
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2017196751A1 (fr) * 2016-05-09 2017-11-16 Cisco Technology, Inc. Attribution de radio flexible

Citations (5)

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Publication number Priority date Publication date Assignee Title
US20070281634A1 (en) * 2006-06-06 2007-12-06 Surya Prashant Rao Method and device for wireless communications on multiple frequency bands
US20110064062A1 (en) * 2009-09-16 2011-03-17 Samsung Electronics Co., Ltd. Frequency band setting apparatus and method, access point, and frequency band using method of access point
US20110096875A1 (en) * 2009-10-26 2011-04-28 Indian Institute Of Science Adaptive Digital Baseband Receiver
US20110223957A1 (en) * 2002-11-01 2011-09-15 Interdigital Technology Corporation Base station with improved channel quality prediction for wireless communication
WO2013122591A1 (fr) * 2012-02-16 2013-08-22 Hewlett-Packard Development Company, L.P. Gestion de ressources radio

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110223957A1 (en) * 2002-11-01 2011-09-15 Interdigital Technology Corporation Base station with improved channel quality prediction for wireless communication
US20070281634A1 (en) * 2006-06-06 2007-12-06 Surya Prashant Rao Method and device for wireless communications on multiple frequency bands
US20110064062A1 (en) * 2009-09-16 2011-03-17 Samsung Electronics Co., Ltd. Frequency band setting apparatus and method, access point, and frequency band using method of access point
US20110096875A1 (en) * 2009-10-26 2011-04-28 Indian Institute Of Science Adaptive Digital Baseband Receiver
WO2013122591A1 (fr) * 2012-02-16 2013-08-22 Hewlett-Packard Development Company, L.P. Gestion de ressources radio

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017196751A1 (fr) * 2016-05-09 2017-11-16 Cisco Technology, Inc. Attribution de radio flexible
US10433189B2 (en) 2016-05-09 2019-10-01 Cisco Technology, Inc. Flexible radio assignment
US10609571B2 (en) 2016-05-09 2020-03-31 Cisco Technology, Inc. Determining redundant radios
EP3908027A1 (fr) * 2016-05-09 2021-11-10 Cisco Technology, Inc. Allocation flexible de radio

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