WO2013063957A1 - Procédé et dispositif de requête gas - Google Patents

Procédé et dispositif de requête gas Download PDF

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Publication number
WO2013063957A1
WO2013063957A1 PCT/CN2012/078906 CN2012078906W WO2013063957A1 WO 2013063957 A1 WO2013063957 A1 WO 2013063957A1 CN 2012078906 W CN2012078906 W CN 2012078906W WO 2013063957 A1 WO2013063957 A1 WO 2013063957A1
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WO
WIPO (PCT)
Prior art keywords
list
response message
network information
external network
gas
Prior art date
Application number
PCT/CN2012/078906
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English (en)
Chinese (zh)
Inventor
姚宗明
巴贝尔·菲利普
方平
李云波
Original Assignee
华为技术有限公司
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.)
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Publication of WO2013063957A1 publication Critical patent/WO2013063957A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14—Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications, and in particular, to a GAS (Generic Advertisement Services) query method and apparatus. Background technique
  • WLAN Wireless Local Area Network
  • BSS Basic Service Set
  • APs Access Points
  • GAS Generic Advertisement Services
  • the inventor has found that at least the following problems exist in the prior art: Since the STA can perform GAS query on only one AP at a time, when the STA needs to query external network information supported by multiple APs, it needs to be more
  • the GAS query mechanism is repeatedly activated, which not only consumes power, but also takes a long time for the STA to search for an available network, and the user experience is poor. Summary of the invention
  • the embodiment of the present invention provides a GAS query method and device, which can simultaneously acquire external network information supported by multiple APs, so that the STA can search for an available network more quickly, and can save energy.
  • an embodiment of the present invention provides a GAS query method, including:
  • an embodiment of the present invention further provides a GAS query method, including:
  • the embodiment of the present invention further provides an access point AP, which is capable of performing GAS query, where the AP includes:
  • a first receiving unit configured to receive a GAS initial request message sent by the STA, where the GAS initial request message includes an AP list;
  • an acquiring unit configured to obtain external network information supported by each AP in the AP list, where the first sending unit is configured to send external network information supported by each AP in the AP list to the STA.
  • the embodiment of the present invention further provides a site STA, which is capable of performing a GAS query, where the STA includes:
  • a second sending unit configured to send a GAS initial request message to the first access point AP, so that the first AP acquires external network information, where the GAS initial request message includes an AP list;
  • a second receiving unit configured to receive a GAS initial response message returned by the first AP, and obtain external network information supported by each AP in the AP list according to the GAS initial response message.
  • the embodiment of the present invention further provides a general notification service GAS query system, including the foregoing access point AP and the station STA.
  • the GAS query method and device provided by the embodiment of the present invention by carrying the AP list in the GAS initial request message, obtain external network information supported by multiple APs.
  • the method provided by the embodiment of the present invention enables the STA to acquire external network information supported by multiple APs at the same time, and can quickly determine the accessable network, and can also reduce power consumption and save power.
  • FIG. 1 is a schematic flowchart of a method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method according to another embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method according to still another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an AP list provided in the embodiment shown in FIG. 3 according to the present invention.
  • FIG. 5 is a schematic flowchart diagram of a method according to still another embodiment of the present invention.
  • FIG. 6 to FIG. 9 are schematic diagrams showing the structure of an access point AP according to another embodiment of the present invention
  • FIG. 10 to FIG. 14 are schematic diagrams showing the structure of a station STA according to another embodiment of the present invention.
  • An embodiment of the present invention provides a GAS query method. As shown in FIG. 1 , the method includes: 1 01. An AP receives a GAS initial request message sent by a STA, where the GAS initial request message includes
  • the AP list includes the identifiers of all the APs that are detected by the STA, or the identifiers of some of the APs that are detected by the STA, which are not limited herein.
  • the AP obtains external network information supported by each AP in the AP list.
  • the external network information supported by the AP includes a roaming alliance list, a service quality QOS mapping of the external network, and 3GPP cellular network information.
  • the GAS query method provided by the embodiment of the present invention obtains external network information supported by multiple APs by carrying an AP list in the GAS initial request message.
  • the method provided by the embodiment of the present invention enables the STA to acquire external network information supported by multiple APs at the same time, and can quickly determine the accessable network, and can also reduce power consumption and save power.
  • Another embodiment of the present invention provides a GAS query method. As shown in FIG. 2, the method includes:
  • the STA sends a GAS initial request message to the first AP, so that the first AP acquires external network information, where the GAS initial request message includes an AP list.
  • the AP list may include an identifier of all the APs that are detected by the current STA, or an identifier of a part of the APs that are detected by the current STA, where the identifier of the part of the AP includes the current STA according to the user indication.
  • the identifier of the selected AP, or the identifier of the AP that meets the STA's own preset rules among all APs detected by the current STA but is not limited thereto.
  • the first AP is an AP that receives the GAS initial query request message sent by the STA, and may be an AP that is randomly selected by the STA from the AP list, or the STA may select an AP according to the user indication. There is no limit here.
  • the STA receives the GAS initial response message returned by the first AP, and obtains external network information supported by each AP in the AP list according to the GAS initial response message.
  • the external network information supported by the AP includes a roaming alliance list, a service quality QOS mapping of the external network, and 3GPP cellular network information.
  • the GAS query method provided by the embodiment of the present invention carries an AP list in the GAS initial request message sent to the AP to obtain external network information supported by multiple APs.
  • the method provided by the embodiment of the present invention enables the STA to simultaneously acquire external network information supported by multiple APs, and can quickly determine the accessibility to the network, and can also reduce power consumption and save power.
  • a further embodiment of the present invention provides a GAS query method. As shown in FIG. 3, the method includes:
  • the STA starts a GAS query mechanism, determines a GAS query object, and generates an AP list according to the GAS query object, where the AP list includes an identifier of each AP in the GAS query object.
  • the GAS query object may be all APs detected by the STA by scanning, or It is the identifier of a part of the APs that are detected by the STA (for example, the identifier of the part of the AP that is selected by the STA according to the user's indication, or the identifier of the part of the AP that meets the STA's own preset rule among all the APs detected by the current STA). No restrictions are imposed.
  • the embodiment of the present invention provides a schematic structural diagram of an AP list.
  • the AP list may include:
  • An element identification number field 41 configured to represent that the current string information is a list of APs to be queried by the GAS, and the value is any integer value that is not currently used by the 802.11 protocol;
  • the AP list field 43 is used to record the identification information of each AP in the AP list.
  • each AP identifier in the AP list field 43 may be composed of an SS ID (Service Set Identifier) field 431 and/or a BSSID (Basic Service Set Identifier) field 432, where the SSID field occupies 32-bit bytes.
  • the BSS ID field occupies 6 bytes.
  • the AP list structure shown in FIG. 4 is only one of the AP list structures in the embodiment of the present invention.
  • the AP list structure in the embodiment of the present invention is not limited thereto.
  • the STA determines an initial query object from the GAS query object as the first AP, and sends a GAS query initial request message to the first AP.
  • the STA may randomly select an AP as the first AP from the AP list, and may also select an AP as the first AP according to the user indication, which is not limited herein.
  • the GAS initial request message further includes a query request, where the query request is used to indicate that the first AP that receives the GAS query initial request message queries the external network supported by each AP in the AP list. information.
  • the first AP receives the GAS initial request message sent by the STA, and parses the GAS initial request message to obtain an identifier of each AP in the AP list.
  • the first AP sends the query request and the identifier of each AP in the AP list to the AS (Advertisement Server) to obtain external network information supported by each AP in the AP list, where The AS can provide external network information supported by each AP.
  • AS Application Server
  • the AS receives the query request and the identifier of each AP in the AP list, and queries the external network information supported by each AP in the AP list.
  • the first AP receives the query response message returned by the AS, where the query response message includes external network information supported by each AP in the AP list.
  • the first AP sends a GAS initial response message to the STA, where the GAS initial response message includes external network information supported by each AP in the AP list.
  • the first AP may The external network information fragment supported by each AP in the AP list is sent to the STA.
  • the first AP may carry the delayed query time in the GAS initial response message, so that after the STA carries the delayed query time, the STA sequentially sends at least one GAS recovery request message to the current first AP to receive the corresponding The GAS recovers the response message, and obtains the remaining external network information supported by each AP in the remaining AP list.
  • the embodiment may further include the following steps 308-309:
  • the STA obtains a delayed query time, and after the delayed query time, sends a GAS recovery request message to the first AP.
  • the first AP After receiving the GAS recovery request message, the first AP returns a GAS recovery response message to the STA, where the GAS recovery response message carries external network information supported by each AP in the remaining AP list.
  • the STA continues to send a GAS recovery request message to the current first AP to receive the corresponding GAS recovery response message, and obtains the remaining information.
  • the external network information supported by each AP in the AP list has not been sent after the step 309.
  • the STA selects an external network that can be accessed according to the external network information supported by each AP in the AP list, determines an AP corresponding to the external network, and associates the AP with the AP to access the external network.
  • the GAS query method provided by the embodiment of the present invention obtains external network information supported by multiple APs by carrying an AP list in the GAS initial request message. Compared with the prior art, the method provided by the embodiment of the present invention enables the STA to acquire external network information supported by multiple APs at the same time, and can quickly determine the accessable network, and can also reduce power consumption and save power.
  • a further embodiment of the present invention provides a GAS query method, which can adopt an asynchronous response mechanism in an AP. Querying external network information supported by multiple APs, as shown in FIG. 5, the method includes:
  • the STA starts a GAS query mechanism, determines a GAS query object, and generates an AP list according to the GAS query object, where the AP list includes an identifier of each AP in the GAS query object.
  • the GAS query object may be all the APs that are detected by the STA, or may be the identifiers of some of the APs that are detected by the STA, which is not limited herein.
  • the STA determines, as the first AP, the first initial query object from the GAS query object, and sends a GAS initial request message to the first AP.
  • the STA may randomly select an AP as the first AP from the AP list, and may also select an AP as the first AP according to the user indication, which is not limited herein.
  • the GAS initial request message further includes a query request, where the query request is used to indicate that the AP that receives the GAS query initial request message queries the external network information supported by each AP in the AP list.
  • the first AP receives the GAS initial request message sent by the STA, and parses the GAS initial request message to obtain an identifier of each AP in the AP list.
  • the first AP sends the query request and the identifier of each AP in the AP list to the AS, to obtain external network information supported by each AP in the AP list, where the AS can provide an external supported by each AP.
  • Internet Information
  • the first AP sends a GAS initial response message to the STA, where the GAS initial response message carries a delayed query time, so that the STA sends a GAS recovery request message to the current AP according to the delayed query time.
  • the first AP acquires a query response message that is returned by the AS, where the query response message includes external network information supported by each AP in the AP list.
  • the first AP After receiving the GAS recovery request message, the first AP returns a GAS recovery response message to the STA, where the GAS recovery response message carries external network information supported by each AP in the AP list.
  • An AP may send the external network information fragment supported by each AP in the AP list to the STA through the STA's GAS recovery request message.
  • the first AP may set a first indication identifier in the GAS recovery response message, where the first indication identifier is used to instruct the STA to continue to send at least one GAS recovery request message to the current first AP to receive the corresponding GAS recovery. Responding to the message, and obtaining the remaining external network information supported by each AP in the remaining AP list.
  • the STA selects an external network that can be accessed according to the external network information supported by each AP in the AP list, determines an AP corresponding to the external network, and associates the AP with the AP to access the external network.
  • the GAS query method provided by the embodiment of the present invention can obtain the external network information supported by multiple APs by carrying the AP list in the GAS initial request message when the AP adopts the asynchronous response mechanism.
  • the method provided by the embodiment of the present invention enables the STA to acquire external network information supported by multiple APs at the same time, and can quickly determine the accessable network, and can also reduce power consumption and save power.
  • a further embodiment of the present invention provides an access point AP, which can implement the method of the AP side in the foregoing method embodiment. As shown in FIG. 6, the AP includes:
  • the first receiving unit 61 is configured to receive a GAS initial request message sent by the STA, where the GAS initial request message includes an AP list.
  • the obtaining unit 62 is configured to obtain external network information supported by each AP in the AP list
  • the first sending unit 63 is configured to send external network information supported by each AP in the AP list to the STA.
  • the GAS initial request message received by the first receiving unit 61 further includes a query request, where the query request is used to indicate that the current AP queries external network information supported by each AP in the AP list, where
  • the AP list includes the identifiers of all the APs detected by the STA, or the identifiers of some APs of all the APs detected by the STA, but is not limited thereto.
  • the obtaining unit 62 includes a first sending subunit 621 and a first receiving subunit 622, where:
  • the first sending sub-unit 621 is configured to send the query request and the identifier of each AP in the AP list to an advertisement server, where the advertisement server is configured to provide external network information supported by each AP;
  • the first receiving sub-unit 622 is configured to receive the query response message returned by the advertisement server, where the query response message includes external network information supported by each AP in the AP list.
  • the first sending unit 63 includes a second sending sub-unit 631, configured to send a GAS initial response message to the STA when the current AP adopts a synchronous response mechanism, where the GAS initial response
  • the message includes external network information supported by each AP in the AP list.
  • the second sending sub-unit 631 is further configured to: when the length of the query response message is too long, causing the GAS initial response message to fail to carry the external network information supported by each AP in the AP list at one time And carrying the delayed query time in the GAS initial response message, so that after the STA carries the delayed query time, the STA sequentially sends at least one GAS recovery request message to the current AP to receive the corresponding GAS recovery response message, and obtain the corresponding GAS recovery response message.
  • the remaining external network information supported by each AP in the AP list wherein the external network information supported by the AP includes a roaming alliance list, a quality of service QOS mapping of the external network, and 3GPP cellular network information.
  • the first sending unit 63 further includes a third sending subunit 632, a second receiving subunit 633, and a fourth sending subunit 634, where:
  • the third sending subunit 632 is configured to send to the STA when the current AP adopts an asynchronous response mechanism.
  • GAS initial response message carries a delayed query time, so that the STA sends a GAS recovery request message to the current AP after the delayed query time;
  • the second receiving sub-unit 633 is configured to receive the GAS recovery request message sent by the STA.
  • the fourth sending sub-unit 634 is configured to send a GAS recovery response message to the STA, where the GAS recovery response message includes the AP list.
  • External network information supported by each AP is configured to be used to send a GAS recovery response message to the STA, where the GAS recovery response message includes the AP list.
  • the fourth sending sub-unit 634 is further configured to: when the length of the query response message is too long, causing the GAS recovery response message to fail to carry the external network information supported by each AP in the AP list at one time And setting a first indication identifier in the GAS recovery response message, where the first indication identifier is used to instruct the STA to continue to send at least one GAS recovery request message to the current AP to receive a corresponding GAS recovery response message, and obtain the remaining The external network information supported by each AP in the AP list, where the external network information supported by the AP includes a roaming alliance list, a quality of service QOS mapping of the external network, and 3GPP cellular network information.
  • the AP provided by the embodiment of the present invention can perform GAS query, and the AP is acquired by the first receiving unit 51.
  • the obtaining unit 52 obtains the external network information supported by each AP in the AP list, and the first sending unit 53 sends the external network information supported by each AP in the AP list to the STA.
  • the AP provided by the embodiment of the present invention enables the STA to acquire external network information supported by multiple APs at the same time, and can quickly determine the accessable network, and can also reduce power consumption and save power.
  • Another embodiment of the present invention further provides a STA that can implement the STA side in the foregoing method embodiment. As shown in FIG. 10, the STA includes:
  • the second sending unit 101 is configured to send a GAS initial request message to the first access point AP, so that the first AP acquires external network information, where the GAS initial request message includes an AP list.
  • the second receiving unit 102 is configured to receive the GAS initial response message returned by the first AP, and obtain external network information supported by each AP in the AP list according to the GAS initial response message.
  • the GAS initial request message sent by the second sending unit 101 further includes a query request, where the query request is used to instruct the first AP to query external network information supported by each AP in the AP list;
  • the STA further includes:
  • the determining unit 103 is configured to determine an AP list, where the AP list includes an identifier of all the APs that are detected by the current STA, or an identifier of a part of the APs that are detected by the current STA, where the part of the AP is
  • the identifier includes the identifier of the AP selected by the current STA according to the user indication, or the identifier of the AP that meets the STA's own preset rule among all the APs detected by the current STA.
  • the second receiving unit 102 includes a third receiving subunit 1021 and a first obtaining subunit 1022, where the STA specifically includes a third sending unit 104 and a third receiving unit 105, where :
  • the third receiving sub-unit 1021 is configured to: when the first AP adopts a synchronization response mechanism, receive the GAS initial response message, where the GAS initial response message includes external network information supported by each AP in the AP list;
  • the first obtaining sub-unit 1022 is configured to obtain, from the GAS initial response message, external network information supported by each AP in the AP list.
  • the third sending unit 104 is configured to use the GAS received by the third receiving subunit 1021.
  • the initial response message carries the delayed query time
  • the at least one GAS recovery request message is sequentially sent to the first AP after receiving the delayed query time to receive the corresponding GAS recovery response message.
  • the third receiving unit uses Receiving the GAS recovery response message returned by the first AP, and obtaining the external network information supported by each AP in the remaining AP list, where the external network information supported by the AP includes a roaming alliance list and an external network. Quality of Service QOS mapping, 3GPP cellular network information.
  • the second receiving unit 102 includes a fourth receiving subunit 1 023
  • the STA specifically includes a fourth sending unit 106 and the Four receiving units 1 07 , wherein:
  • the fourth receiving sub-unit 1 023 is configured to: when the first AP adopts an asynchronous response mechanism, receive a GAS initial response message returned by the first AP, where the GAS initial response message includes a delayed query time.
  • the fourth sending unit 106 is configured to send a GAS recovery request message to the first AP after obtaining the delayed query time to obtain the GAS recovery response message returned by the first AP.
  • the fourth receiving unit 107 is configured to receive the GAS recovery response message returned by the first AP, and obtain external network information supported by each AP in the AP list from the GAS recovery response message, where the GAS is restored.
  • the response message includes external network information supported by each AP in the AP list.
  • the STA further includes a fifth sending unit 1 08 and a fifth receiving unit 1 09, where:
  • the fifth sending unit 108 is configured to: when the delayed query time is carried in the GAS recovery response message received by the fourth receiving unit 107, after the carrying the delayed query time, send the at least the first AP to the first AP. a GAS recovery request message to receive a corresponding GAS recovery response message;
  • the fifth receiving unit 109 is configured to receive the GAS recovery response message returned by the AP, and obtain the external network information supported by each AP in the remaining AP list, where the external network information supported by the AP includes Roaming alliance list, quality of service QOS mapping of external networks, 3GPP cellular network information.
  • the STA provided by the embodiment of the present invention can perform the GAS query, and the second sending unit 101 sends a GAS initial request message to the first sending, the GAS initial request message carries the AP list; and the second receiving unit 102 receives the first The GAS initial response message returned by the AP, and then the APs in the AP list are obtained.
  • Supported external network information Compared with the prior art, the STA provided by the embodiment of the present invention can simultaneously acquire external network information supported by multiple APs, and can quickly determine the accessable network, and can also reduce power consumption and save power.
  • the embodiment of the present invention further provides a general notification service GAS query system, including the access point AP shown in FIG. 6-9, and the station STA shown in FIG.
  • the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. .
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
  • a hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

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Abstract

L'invention concerne un procédé et un dispositif de requête GAS relevant du domaine des télécommunications et utilisés pour remédier au problème selon lequel un temps et une puissance excessifs sont exigés pour obtenir des informations de réseaux externes prises en charge par une pluralité de points d'accès (AP). Le procédé proposé par la présente invention consiste à recevoir un message de demande GAS initiale envoyé par une station STA, le message de demande GAS initiale comprenant une liste de points d'accès ; à acquérir des informations de réseaux externes prises en charge par les points d'accès de la liste de points d'accès ; et à envoyer à la station STA les informations de réseaux externes prises en charge par les points d'accès de la liste de points d'accès. En variante, le procédé consiste à envoyer un message de demande GAS initiale à un premier point d'accès de manière à ce que le premier point d'accès acquière des informations de réseau externes, le message de demande GAS initiale comprenant une liste de points d'accès ; et à recevoir un message de réponse GAS initiale renvoyé par le premier point d'accès et acquérir, conformément au message de réponse GAS initiale, des informations de réseaux externes prises en charge par les points d'accès de la liste de points d'accès. La présente invention concerne le domaine des télécommunications et est utilisée pour rechercher des informations GAS dans un réseau WLAN.
PCT/CN2012/078906 2011-11-01 2012-07-20 Procédé et dispositif de requête gas WO2013063957A1 (fr)

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CN201110340110.9A CN103096422B (zh) 2011-11-01 2011-11-01 Gas查询方法及装置

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KR102127461B1 (ko) * 2013-08-06 2020-06-26 에스케이텔레콤 주식회사 무선랜 네트워크 광고 서비스 제공 방법 및 이를 이용한 무선 단말
CN105519227B (zh) * 2013-12-04 2019-07-23 华为技术有限公司 基于WiFi系统的站点间建立链路的方法和装置
CN104754642B (zh) * 2013-12-30 2019-03-01 华为终端（东莞）有限公司 一种服务查询方法、装置及系统和站点
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