US20070248116A1 - Communication control apparatus and method of controlling same - Google Patents

Communication control apparatus and method of controlling same Download PDF

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US20070248116A1
US20070248116A1 US11/733,820 US73382007A US2007248116A1 US 20070248116 A1 US20070248116 A1 US 20070248116A1 US 73382007 A US73382007 A US 73382007A US 2007248116 A1 US2007248116 A1 US 2007248116A1
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communication
request
band allocation
control
allocation control
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Masashi Hamada
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Canon Inc
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F10/04—Monomers containing three or four carbon atoms
    • C08F10/06—Propene
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H01Q9/285—Planar dipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/04—Monomers containing three or four carbon atoms
    • C08F210/06—Propene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65912—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
    • C08F4/65922—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not
    • C08F4/65925—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not two cyclopentadienyl rings being mutually non-bridged
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
    • C08F4/65922—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not
    • C08F4/65927—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not two cyclopentadienyl rings being mutually bridged
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S526/00—Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S526/943—Polymerization with metallocene catalysts

Definitions

  • the present invention relates to control for allocating a communication band on a network.
  • session identification information is shared between nodes, whereby differential information is sent to a node on the service provider side so that service information is updated to the latest service information with the appropriate amount of data when service is resumed.
  • Patent Document 2 Japanese Patent Laid-Open No. 2005-216313
  • the present invention realizes to delay, until the completion of communication-band allocation control that has been initiated first, the start of succeeding communication-band allocation control.
  • a method of controlling a communication control apparatus comprising the steps of: executing communication-band allocation control in accordance with a request from a communication apparatus; and controlling in such a manner that until communication-band allocation control based upon a request from a first communication apparatus ends, the start of communication-band allocation control based upon a request from a second communication apparatus is delayed.
  • a communication control apparatus comprising: execution device adapted to execute communication-band allocation control in accordance with a request from a communication apparatus; and control device adapted to for control in such a manner that until communication-band allocation control based upon a request from a first communication device ends, the start of communication-band allocation control based upon a request from a second communication device is delayed.
  • FIG. 1 is a diagram illustrating an example of the configuration of a wireless network system according to a first embodiment of the present invention
  • FIG. 2 is a diagram illustrating an example of a wireless access point as well as function layers in a personal computer
  • FIG. 3 is a diagram illustrating a message sequence on the network according to the first embodiment
  • FIG. 4 is a diagram illustrating a message sequence on the network according to the first embodiment
  • FIG. 5 is a diagram illustrating a message sequence on the network according to the first embodiment
  • FIG. 6 is a flowchart illustrating processing at a wireless access point
  • FIG. 7 is a flowchart illustrating processing at a wireless access point.
  • FIG. 8 is a diagram illustrating a message sequence on the network according to a second embodiment.
  • the present invention will be described taking as an example a wireless network system in which a QoS wireless LAN compliant with the IEEE 802.11e standard is used as a communication medium on a communication path and is supported together with QoS middleware compliant with the UPnP QoS standard.
  • QoS wireless LAN QoS control that is based upon resource management of a narrowband [in wireless-cell (BSS) units] is carried out.
  • BSS wireless-cell
  • QoS control that is based upon resource management of a broadband (subnet units) is performed.
  • FIG. 1 is a diagram illustrating one example of the configuration of a wireless network system in the first embodiment.
  • a wireless access point 101 supports QoS control that is based upon narrowband (BBS units) resource management and QoS control that is based upon broadband (subnet units) resource management.
  • a server apparatus 102 has a function for performing QoS control that is based upon broadband (subnet units) resource management.
  • a personal computer is described as an example of the server apparatus 102 .
  • a client apparatus 103 supports broadband QoS control and narrowband QoS control and functions as a wireless station that performs wireless communication with the wireless access point 101 .
  • a display unit is described as an example of the client apparatus 103 , although it may be another apparatus such as a notebook personal computer.
  • a client apparatus 104 supports broadband and narrowband QoS control in a manner similar to that of the client apparatus 103 .
  • the client apparatus 104 is a content providing apparatus for supplying content information such as moving pictures.
  • a client apparatus 105 supports only narrowband QoS control and functions as a wireless station for performing wireless communication with the wireless access point 101 .
  • a display unit is described as an example of the client apparatus 105 , although it may be another apparatus such as a notebook personal computer.
  • a client apparatus 106 supports only narrowband QoS control in a manner similar to that of the client apparatus 105 .
  • the client apparatus 106 is a content providing apparatus for supplying content information such as moving pictures.
  • setup of traffic stream (TS) in accordance with QoS middleware control is performed between the display unit 103 and content providing apparatus 104 . Further, TS setup in accordance with QoS LAN control is performed between the display unit 105 and client apparatus 106 .
  • FIG. 2 is a diagram illustrating an example of a wireless access point as well as function layers in a personal computer.
  • the system broadly comprises a network application function unit 200 , a transport control function unit 210 , an 802.11e QoS control function unit 220 and a communication media control function unit 230 .
  • the network application function unit 200 includes an AV stream application 201 , a UPnP AV 202 and a UPnP QoS control unit 203 .
  • the transport control function unit 210 includes a UDP TCP/IP 211 and a bridge 212 .
  • the 802.11e QoS control function unit 220 includes an admission control unit 221 , a resource management unit 222 and a policy management unit 223 .
  • the communication media control function unit 230 includes a wireless LAN (MAC) 231 , a wireless LAN (PHY) 232 , a wired LAN (MAC) 233 and a wired LAN (PHY) 234 .
  • MAC is the abbreviation of Medium Access Control
  • PHY is the abbreviation of Physical Layer.
  • TS setup in accordance with QoS wireless LAN control is performed between the display unit 105 and content providing apparatus 106 during setup of a TS in accordance with QoS middleware control between the display unit 103 and content providing apparatus 104 .
  • this is processing in which if a communication-band allocation request based upon narrowband QoS control occurs after the wireless access point 101 has started communication-band allocation processing that is based upon broadband QoS control, then the issued communication-band allocation request is made to wait until the communication-band allocation processing ends.
  • FIGS. 3 to 5 are diagrams illustrating a message sequence on the network according to the first embodiment
  • FIGS. 6 and 7 are flowcharts illustrating processing at the wireless access point 101 .
  • audio-video content of the content providing apparatus 104 is decided by the display unit 103 using a remote controller, and the display unit 103 transmits a message for acquiring traffic specs (TSPEC) that is necessary for transmitting the audio-video content.
  • TSPEC acquisition (Getting TSPEC) message ( 300 , 400 , 500 ) is sent to the content providing apparatus 104 via the wireless access point 101 .
  • the TSPEC that has been stored in the content providing apparatus 104 is then transmitted to the display unit 103 .
  • the display unit 103 transmits a TS reservation request (Request Traffic QoS) message ( 301 , 401 , 501 ) for content transmission.
  • the TS reservation request message ( 301 , 401 , 501 ) is sent to a CDS (Content Delivery Service) of the personal computer 102 .
  • CDS Content Delivery Service
  • the CDS transmits a status acquisition (Get QoS State) message ( 302 , 402 , 503 ) to each device that supports QoS middleware control.
  • the message is transmitted to the wireless access point 101 , display unit 103 and content providing apparatus 104 , and the media-resource availability status of each device is received as status of the response to the TS reservation request message.
  • the wireless access point 101 Upon receiving the status acquisition message, the wireless access point 101 starts the processing of the flowchart shown in FIG. 6 in addition to the QoS middleware control processing. First, the wireless access point 101 determines whether TS setup processing based upon wireless QoS control is in progress. Here the wireless access point 101 determines whether an ADDTS request (ADDTS Req.) message is being received (S 601 ). If this message is being received, then the wireless access point 101 determines whether the current state is one in which an ADDTS response (ADDTS Res.) message has not been transmitted (S 602 ). If the message is not being transmitted, then the wireless access point 101 waits for completion of transmission of the ADDTS response message.
  • ADDTS Req. ADDTS request
  • ADDTS Res. ADDTS Res.
  • the wireless access point 101 sets a status for instructing that a request be issued again following elapse of a stipulated time ( 306 , 406 ) when the ADDTS request message is received from the display unit 105 (S 603 ).
  • the wireless access point 101 transmits the ADDTS response message that includes a TS Delay value to the display unit 105 and instructs the display unit 105 not to issue the request again during the stipulated time.
  • the wireless access point 101 starts a timer for measuring a delay time ( 303 , 403 ) during which acceptance of the ADDTS request message is delayed (S 604 ).
  • the wireless access point 101 waits for receipt of a TS setup (Setup Traffic QoS) message ( 307 , 505 ), which specifies TS acquisition for transmission of content, from the personal computer 102 (S 605 ).
  • a TS setup (Setup Traffic QoS) message ( 307 , 505 ), which specifies TS acquisition for transmission of content, from the personal computer 102 (S 605 ).
  • the wireless access point 101 waits until the timer times out (S 606 ) and receives the message before the timer times out ( FIG. 3 ).
  • the wireless access point 101 clears the timer (S 607 ) when the timer times out ( FIG. 4 ).
  • the wireless access point 101 then clears the status that instructs the display unit 105 to wait the stipulated period of time before it again requests the ADDTS request message (S 608 ), and ends this one unit of processing.
  • the above-mentioned delay time is a period of time necessary for the personal computer 102 to acquire the media-resource availability status of each device and for the completion of transmission of a message that specifies TS acquisition for content transmission using the media-resource availability status as a criterion. Further, the stipulated time stipulates a period of time longer than the delay time.
  • the wireless access point 101 upon receiving an ADDTS request message ( 304 , 404 , 502 ) from the display unit 105 , the wireless access point 101 starts executing the processing of the flowchart shown in FIG. 7 in addition to the normal wireless QoS control processing.
  • the wireless access point 101 determines whether the timer that measures delay time is operating (S 701 ). If the timer is operating, then the wireless access point 101 sends back an ADDTS response message ( 305 , 405 ) in which the above-mentioned stipulated time has been set to the TS Delay value (S 706 ). If the timer is not operating, then the wireless access point 101 determines whether the ADDTS request message ( 304 , 404 ) was received during the delay time. If the message was not received, then the wireless access point 101 sends back an ADDTS response message ( 504 ) that is in accordance with the normal TS allocation processing (S 705 ) and terminates one unit of processing.
  • the display unit 105 receives the ADDTS response message ( 305 , 405 ) inclusive of the TS Delay value from the wireless access point 101 , re-transmission of the ADDTS request message is delayed for the period of time indicated by the TS Delay value.
  • an ADDTS request message ( 309 , 409 ) is again transmitted to the wireless access point 101 .
  • the wireless access point 101 starts executing the processing of FIG. 7 again.
  • the wireless access point 101 adds on a parameter indicative of acceptance. If reservation of TS is not possible, then the wireless access point 101 adds on a parameter indicating that acceptance is not possible and sends back an ADDTS response message that is in accordance with the normal TS allocation processing.
  • the wireless access point 101 that supports multiple-system QoS control processing delays, until the end of one unit of system QoS control processing started first, the start of system QoS control processing that is started subsequently.
  • multiple system QoS control in which amount of remaining resources of the same communication path is used as a criterion is implemented exclusively, thereby making it possible to implement system QoS control that is based upon accurate resource management of the communication path.
  • a second embodiment of the present invention will now be described in detail with reference to the drawings. Described in the second embodiment is processing executed at the wireless access point in a case where requests to start processing for reserving a TS communication path have been issued successively from the display unit 105 and content providing apparatus 106 .
  • the configuration of the wireless network system of the second embodiment is similar to that of the first embodiment shown in FIG. 1 and need not be described again.
  • FIG. 8 is a diagram illustrating a message sequence on the network according to the second embodiment.
  • audio-video content is decided by the display unit 103 .
  • the personal computer 102 receives a TS reservation request message ( 801 ) from the display unit 103 , it transmits a Get QoS State message to each device.
  • the wireless access point 101 starts the processing of the flowchart of FIG. 6 in a manner similar to the first embodiment.
  • the wireless access point 101 Upon receiving an ADDTS request message from the display unit 105 ( 804 ), the wireless access point 101 starts executing the processing of the flowchart shown in FIG. 7 . First, the wireless access point 101 determines whether the timer for measuring the delay time is operating (S 701 ). Since the timer is operating, the wireless access point 101 sends back an ADDTS response message ( 805 ) in which the above-mentioned stipulated time has been set to the TS Delay value (S 705 ) and terminates one unit of processing.
  • the wireless access point 101 receives an ADDTS request message ( 808 ) from the content providing apparatus 106 after the timer times out ( 807 ), then the wireless access point 101 starts executing the processing of the flowchart shown in FIG. 7 .
  • a “NO” decision is rendered at S 701 and the wireless access point 101 determines whether the ADDTS request message was received during the operation of the timer (S 702 ). Since the message was received from the display unit 105 , the wireless access point 101 determines whether the stipulated time of which it has been notified by the ADDTS response message ( 805 ) has already elapsed (S 703 ).
  • the wireless access point 101 determines whether the device that was the source of transmission of the present ADDTS request message ( 808 ) and the device that was the source of transmission of the already received ADDTS request message 804 are identical (S 704 ).
  • the wireless access point 101 sends back an ADDTS response message in which the stipulated time has been set to the TS Delay value (S 706 ) and terminates one unit of processing.
  • the wireless access point 101 sends back an ADDTS response message ( 813 ) that is in accordance with the normal TS allocation processing (S 705 ) and terminates one unit of processing.
  • the object of the invention is attained also by supplying a recording medium storing the program codes of the software for performing the functions of the foregoing embodiments to a system or an apparatus, reading the program codes with a computer (e.g., a CPU or MPU) of the system or apparatus from the recording medium, and then executing the program codes.
  • a computer e.g., a CPU or MPU
  • the program codes read from the recording medium implement the novel functions of the embodiments and the recording medium storing the program codes constitutes the invention.
  • Examples of recording media that can be used for supplying the program codes are a flexible disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, magnetic tape, non-volatile type memory card or ROM, etc.
  • the present invention also covers a case where an operating system or the like running on the computer performs a part of or the entire process based upon the designation of program codes and implements the functions according to the embodiments.
  • the present invention further covers a case where, after the program codes read from the recording medium are written to a memory provided on a function expansion board inserted into the computer or provided in a function expansion unit connected to the computer, a CPU or the like provided on the function expansion board or in the function expansion unit performs a part of or the entire process in accordance with the designation of program codes and implements the function of the above embodiments.

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JP2006-118441 2006-04-21
PCT/US2007/022169 WO2009051584A1 (en) 2007-10-17 2007-10-17 Antenna configuration for electronic devices

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US20100194649A1 (en) 2010-08-05
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US9484618B2 (en) 2016-11-01
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