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Over the Air Database Access for Mode 2 Capable Devices

Over the Air Database Access for Mode 2 Capable Devices. Date: 2010-11-02. Authors:. OTA Database Access for Mode 2 Capable AP/STA. Motivation: TVWS devices operating in Mode 2 require database access to Retrieve available channels for the current location (at least once every 24hrs )

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Over the Air Database Access for Mode 2 Capable Devices

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  1. Over the Air Database Access for Mode 2 Capable Devices Date:2010-11-02 Authors: Santosh Abraham, Qualcomm Incorporated

  2. OTA Database Access for Mode 2 Capable AP/STA • Motivation: • TVWS devices operating in Mode 2 require database access to • Retrieve available channels for the current location (at least once every 24hrs ) • Mode 1 device enablement functions: FCC ID check for Mode 1 devices requesting enablement • Database access may impose a separate MAC/PHY technology for internet access to the database. • Could incur additional costs for Mode 2 capable devices that primarily function as devices in an intranet. • Objective: • Design protocol and messaging to enable Mode 2 capable devices to access database via a neighboring Mode 2/Fixed device • Avoid requiring association for database access. • Database access is required sporadically. • Use Public Action Frames to avoid need for association • RLQP can be extended to serve this purpose Qualcomm Incorporated

  3. OTA Database Access Procedure Transmit requests for channel at current location to database through Mode 2 device. Move to Mode 2 state when channel map is obtained Device enabled for Mode 1 operation using neighboring Mode 2 device Device Un-enabled Mode 1 Mode 2 • A Mode 2 device indicates “Database access capable (DBAC)” in the beacon • Option for indicating capability are discussed later. • Step 1: De-enabled Mode 2 capable STA first obtains enablement to operate in Mode 1 • All enablement procedures for Mode 1 enablement must be followed. • Step 2: When enabled as Mode 1 device • Transmit database query messages to database through DBAC Mode 2 device. • Database query messages carried in RLQP frames. Qualcomm Incorporated

  4. RLQP Extension for OTA Database Access • Features to be added: • Information Elements (IEs) to be added to RLQP • IE for capability query/response • For database access capabilities, separate query response is required. • Note: Beacon only indicates that device is RLQP capable. • Does not indicate capability options within RLQP • IE indicating capability of OTA database access: • Using Vendor specific IEs with indications defined by the database vendors. • IE to carry the query and response Qualcomm Incorporated

  5. Message Formats for OTA Database Access • Database Query/Response Messages sent in an RLQP IE: • Info ID: Set to Database/Query Response • Requestor STA Address, • Responder STA Address • Reason Code field • For Query messages: set to “Database Query” • For Response messages: • Response from database • database inaccessible, no response from database etc. • Enablement Identifier: Set to identifier obtained with Mode 1 Enablement • Database Identifier: • Can contain URL/IP address for the Data base • Database vendor specific identifier. • Security encapsulated Message to be carried to/from the database. • Contents of the Security Encapsulated Database query and response messages will depend on exact protocol between a querying Mode 2 capable STA and the database and are TBD. Qualcomm Incorporated

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