WO2005050919A2 - A method for direct communication between a first station and a second station of a wireless network - Google Patents
A method for direct communication between a first station and a second station of a wireless network Download PDFInfo
- Publication number
- WO2005050919A2 WO2005050919A2 PCT/IB2004/052430 IB2004052430W WO2005050919A2 WO 2005050919 A2 WO2005050919 A2 WO 2005050919A2 IB 2004052430 W IB2004052430 W IB 2004052430W WO 2005050919 A2 WO2005050919 A2 WO 2005050919A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- station
- identifier
- channel
- access point
- direct communication
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
Definitions
- the invention relates to a method for direct communication between a first station and a second station in an Access Point controlled wireless network, wherein one channel communication is ruled by an identifier associated with the Access Point.
- IBSS Independent Basic Service Set
- BSS infrastructure Basic Service Set
- AP Access Point
- BSS infrastructure Basic Service Set
- All data are sent twice, since the first station sends its data to the Access Point whereupon the Access Point must forward all data of the first station destined for the second station, as no direct communication is possible. This fact reduces the overall throughput of the BSS and increases delay.
- Existing Access Points are not able to allow direct communication between their associated stations. An upgrade of the software of the Access Point to incorporate direct communication is sometimes not possible or desirable, for example in the case that an Access Point base is already installed.
- a method to allow communication between two stations is disclosed in WO 01/15387.
- a method for direct communication between a first station and a second station comprises the steps of: - generating a second identifier by said first station, different from the identifier associated with the Access Point, and optionally choosing a second channel; - sending, by said first station, an invitation method for direct communication carrying said second identifier to said second station; - sending, by said second station, a response message acknowledging the invitation message; - setting up direct communication between said first station and said second station using said second identifier.
- the invention therefore foresees that stations which want to communicate directly use a special network identifier and optionally a different channel for that purpose.
- the stations agree upon this special network identifier and the channel by a hand-shake message exchange prior to the direct communication.
- the Access Point which does not know the special network identifier, will interpret the direct data packets as belonging to a foreign network and will refrain from forwarding the data.
- a station When communicating with another station in the infrastructure-based network, a station always uses the infrastructure BSS identifier, but when communicating directly with a station, the second identifier is used.
- the invitation message and said response message can be sent via the
- Access Point using the identifier associated therewith.
- An alternative is to exchange said invitation message and said response message directly between said first station and said second station using an identifier different from the identifier associated with the Access Point.
- the response message may contain information that said second identifier is confirmed or that said second identifier is rejected and a third identifier is proposed. This third identifier is again different from the identifier associated with the Access Point.
- a dedicated identifier may be created.
- the response message may contain information the proposed channel is confirmed or that the channel is rejected and a different channel is proposed. Even though the two types of communication might operate on the same communication .channel, they should not collide if carrier sensing is applied.
- Fig. 1 illustrates a first embodiment of the invention to establish direct communication between two stations of an infrastructure based network as initiated from a first station
- Fig. 2 illustrates the acknowledgement of an invitation by a second station
- Fig. 3 illustrates a second embodiment of the invention, where direct communication is established without involvement of the Access Point
- Fig. 4 illustrates the acknowledgement of the invitation received from a first station by the second station
- Fig. 5 illustrates a successful direct communication between two stations.
- two stations STAl and STA2 are associated to the Access Point AP of an infrastructure-based Basic Service Set BSS.
- the BSS identifier equals the MAC address of Access Point AP.
- stations STAl and STA2 want to set up a directing connection, they have to agree upon the identifier and optionally a different channel for their communication. To do this, station STAl sends an invitation frame or invitation message to the Access Point AP, where the invitation message includes all necessary information for the intended side traffic which then avoids involvement of the Access Point AP.
- the Access Point AP copies the message and forwards it to stations STA2.
- station STA2 upon receipt of the invitation message, sends a response message to the Access Point AP acknowledging the invitation, confirming the identifier and channel for direct communication.
- station STA2 rejects a proposed identifier and/or channel and proposes a new identifier and/or channel to station STAl, where again the identifier has to be different from the identifier associated with the Access Point AP.
- station STA2 can also propose an identifier and/or channel for further direct communication.
- the response message is forwarded by the Access Point AP to station STAl.
- Figure 3 shows a second embodiment wherein station STAl invites station STA2 to the direct communication by using a special identifier, preferably the second identifier, and optionally a second channel, and sends the invitation frame via a side traffic.
- This invitation message may or may not include a proposal for another identifier and/or channel for further direct communication.
- the second identifier is a dedicated identifier
- station STA2 will recognize that the invitation message is a direct link message and send, as illustrated in Figure 4, the response message directly to the station STAl without involving Access Point AP.
- station STAl and station STA2 agree upon a BSS identifier that is different from the one of the infrastructure based network.
- station STA2 may propose to use this identifier and channel also for communication with station STAl. After successful agreement on direct communication, the initiating station STAl has to test the link. Station STAl then established the direct communication via a successfully transmitted frame.
- Figure 5 shows that station STAl and STA2 have successfully established direct communication using the second identifier and optionally the second channel.
- Station STAl and station STA2 are still associated to the Access Point AP, and when communicating via Access Point AP, they will use the identifier and channel associated therewith. Principally, all stations participating in the Access Point controlled wireless network can have one or several direct connections owing to the fact that each sub-network refrains from communication during the active intervals of the other network.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006540715A JP4871134B2 (en) | 2003-11-20 | 2004-11-15 | Method for direct communication between a first station and a second station of a wireless network |
CN2004800341833A CN1883167B (en) | 2003-11-20 | 2004-11-15 | A method for direct communication between a first station and a second station of a wireless network |
EP04799152A EP1687948A2 (en) | 2003-11-20 | 2004-11-15 | A method for direct communication between a first station and a second station of a wireless network |
US10/595,799 US9370033B2 (en) | 2003-11-20 | 2004-11-15 | Method for derect communication between a first station and a second station of a wireless network |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03104290 | 2003-11-20 | ||
EP03104290.6 | 2003-11-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005050919A2 true WO2005050919A2 (en) | 2005-06-02 |
WO2005050919A3 WO2005050919A3 (en) | 2005-07-14 |
Family
ID=34610107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2004/052430 WO2005050919A2 (en) | 2003-11-20 | 2004-11-15 | A method for direct communication between a first station and a second station of a wireless network |
Country Status (5)
Country | Link |
---|---|
US (1) | US9370033B2 (en) |
EP (1) | EP1687948A2 (en) |
JP (1) | JP4871134B2 (en) |
CN (1) | CN1883167B (en) |
WO (1) | WO2005050919A2 (en) |
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WO2008005922A3 (en) * | 2006-06-30 | 2008-05-02 | Qualcomm Inc | System and method for high speed local connectivity between local devices |
EP1946578A1 (en) * | 2005-11-11 | 2008-07-23 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Method and apparatus for limiting peer-to-peer communication interference |
JP2009124758A (en) * | 2009-03-09 | 2009-06-04 | Sony Corp | Radio communication system, radio communication device, radio communication method, and computer program |
WO2010120040A3 (en) * | 2009-04-15 | 2010-12-09 | 아이테크 훗카이도 코포레이션 | Communication method in an ieee 802.11 wireless lan environment |
KR101006115B1 (en) | 2009-04-15 | 2011-01-07 | 아이테크 홋카이도 코포레이션 | Direct link setup method for IEEE 802.11 WLAN |
WO2011015250A1 (en) * | 2009-08-07 | 2011-02-10 | Nokia Siemens Networks Oy | Scheduling in radio telecommunication system |
WO2011020180A1 (en) * | 2009-08-21 | 2011-02-24 | Research In Motion Limited | System and method for mobile network inter-device communications |
JP2012514435A (en) * | 2008-12-30 | 2012-06-21 | クゥアルコム・インコーポレイテッド | Central control of peer discovery pilot transmission |
US8310978B2 (en) | 2007-02-02 | 2012-11-13 | Sony Corporation | Wireless communication system, wireless communication device and wireless communication method, and computer program |
FR2986131A1 (en) * | 2012-01-24 | 2013-07-26 | Streamwide | METHOD OF ESTABLISHING INTERNET COMMUNICATION BETWEEN MOBILE TERMINALS, COMPUTER PROGRAM, AND RECORDING MEDIUM |
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JP4410070B2 (en) * | 2004-09-17 | 2010-02-03 | 富士通株式会社 | Wireless network system and communication method, communication apparatus, wireless terminal, communication control program, and terminal control program |
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- 2004-11-15 WO PCT/IB2004/052430 patent/WO2005050919A2/en not_active Application Discontinuation
- 2004-11-15 EP EP04799152A patent/EP1687948A2/en not_active Withdrawn
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EP1946578A1 (en) * | 2005-11-11 | 2008-07-23 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Method and apparatus for limiting peer-to-peer communication interference |
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FR2986131A1 (en) * | 2012-01-24 | 2013-07-26 | Streamwide | METHOD OF ESTABLISHING INTERNET COMMUNICATION BETWEEN MOBILE TERMINALS, COMPUTER PROGRAM, AND RECORDING MEDIUM |
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Also Published As
Publication number | Publication date |
---|---|
JP4871134B2 (en) | 2012-02-08 |
US20070242665A1 (en) | 2007-10-18 |
CN1883167B (en) | 2013-08-21 |
EP1687948A2 (en) | 2006-08-09 |
WO2005050919A3 (en) | 2005-07-14 |
US9370033B2 (en) | 2016-06-14 |
JP2007512753A (en) | 2007-05-17 |
CN1883167A (en) | 2006-12-20 |
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