WO2007046210A1 - 無線通信端末及び無線通信方法 - Google Patents
無線通信端末及び無線通信方法 Download PDFInfo
- Publication number
- WO2007046210A1 WO2007046210A1 PCT/JP2006/318639 JP2006318639W WO2007046210A1 WO 2007046210 A1 WO2007046210 A1 WO 2007046210A1 JP 2006318639 W JP2006318639 W JP 2006318639W WO 2007046210 A1 WO2007046210 A1 WO 2007046210A1
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- WIPO (PCT)
- Prior art keywords
- communication
- data communication
- data
- communication method
- completed
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/18—Management of setup rejection or failure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Definitions
- the present invention relates to a wireless communication terminal and a wireless communication method.
- CDMA2000 lxEV-DO Code division Multiple Tiple Access 2000 lx Evolution Data Only
- the CDMA2000 lxEV-DO system is a standardized version of the HDR (High Data Rate) system, which is an extension of CDMA2000 lx.
- CDMA2000 which is standardized as “Packet Data Air Interface Specification”, has expanded ARIB T-53 in Japan, EIA / TIA / IS-95, etc. in North America, Korea, etc., and is compatible with the 3rd generation (3G) system
- the lx method is a method aimed at further improving communication speed by specializing in data communication (for example, see Patent Document 1 below).
- EV-DO system communication networks adopting the CDMA2000 lxEV-DO system (hereinafter referred to as EV-DO system) are concentrated in limited areas such as urban areas. For this reason, EV-DO wireless communication terminals can be handed down to the CDMA2000 lx system (hereinafter referred to as the lx system), which is widespread nationwide, when the communication area does not support the EV-DO system. If the communication area is compatible with the EV-DO system, use SMP (Session Management Protocol), which is a communication protocol for the EV-DO system, to establish a session with the base station. The session configuration establishes an EV-DO communication connection (establishes a communication session layer) for communication.
- SMP Session Management Protocol
- the establishment of a session means a state in which an identification ID called UATI (Unicast Access Terminal Identify) is assigned to a wireless communication terminal from the network side.
- Session configuration refers to negotiations such as exchange of parameters related to protocol settings when performing communications using the EV-DO method.
- EV-DO compatible wireless communication terminals are referred to as AT (Access Terminal) terminals.
- Patent Document 1 Japanese Patent Laid-Open No. 2005-136615
- a communication session layer is established immediately after power-on, and a packet transmission operation is performed even in a state and a wasteful retry is performed.
- the EV-DO method is supported, there is a possibility that the lx method, which is inferior in terms of communication speed than the EV-DO method, may be used.
- the lx method is used even though the communication area where it is desirable to preferentially use the EV-DO method with high communication speed is compatible with the EV-DO method. That was very inefficient.
- the present invention has been made in view of the above-described circumstances, and the above two data communication schemes can be efficiently used for a wireless communication terminal having two data communication schemes to which priorities are assigned.
- the purpose is to realize the selection method.
- a first data communication method and second data having a lower priority than the first data communication method are provided.
- a wireless communication terminal that performs data communication by selecting one of the two communication methods, and determines whether the communication base station is compatible with the first data communication method.
- a method determining unit, a communication session state determining unit for determining whether or not establishment of a communication session layer for exchanging parameters necessary for communication with the base station is completed, and the communication A communication control unit that selects one of the first and second data communication methods based on the determination by the communication method determination unit and performs data communication, and the communication control unit includes the communication control unit
- the communication control unit When data communication is started via a base station that is determined to be compatible with the first data communication method, when the communication session state determination unit determines that establishment of a communication session layer has been completed. Makes a data communication request using the first data communication method, and when the communication session state determination unit determines that the communication session layer establishment is not completed, the communication session layer establishment is completed. Until the data communication request is suspended.
- the communication control unit sends out a data communication request in the first data communication method. If the communication session state determination unit determines that the establishment of the communication session layer has been completed, the transmission of the data communication request is retried within a predetermined number of times. To do.
- the communication control unit is configured to determine the retry based on the determination by the communication method determining unit.
- the first data communication method or the second data communication method is used.
- the communication control unit transmits a data communication request in the first data communication method.
- a data communication request is transmitted using the second data communication method.
- the communication session state determining unit establishes a session for the base station.
- the session configuration is completed, it is determined that the establishment of the communication session layer is completed.
- the first data communication method is an EV-DO (Evolution-Dat a Only) method
- the second data communication method is a CDMA2000 lx (Code division Multiple Access 2000 lx) method.
- the first solving means related to the wireless communication method either the first data communication method or the second data communication method having a lower priority than the first data communication method is used.
- a data communication request is transmitted by the first data communication method. If it is determined that the communication session layer establishment is completed in the second step, the transmission of the data communication request is retried within a predetermined number of times.
- the retry is determined based on the determination in the first step. Use either the first or second data communication method.
- a data communication request is transmitted in the first data communication method.
- a data communication request is transmitted using the second data communication method.
- any of the first to fourth solving means in the second step, session establishment and session configuration for the base station are performed. At the completion of the communication session layer It is determined that the establishment is complete.
- the first data communication method is EV-DO (Evolution-Data
- the second data communication method is a CDMA2000 lx (Code division Multiple Access 2000 lx) method.
- the present invention it is possible to realize an efficient selection method of the above two data communication schemes for a radio communication terminal having two data communication schemes to which priorities are assigned. .
- the communication area is compatible with the EV-DO system, the EV-DO system can be preferentially used as much as possible, and a high communication speed can be secured.
- FIG. 1 is a configuration block diagram of a radio communication terminal (AT terminal) in an embodiment of the present invention.
- FIG. 2 is a flowchart showing the operation of an AT terminal in an embodiment of the present invention. Explanation of symbols
- FIG. 1 is a block diagram showing a functional configuration of a radio communication terminal according to the embodiment of the present invention.
- a wireless communication terminal an AT terminal that performs data communication with a base station by selectively switching between two data communication methods of the EV-DO method and the lower priority lx method will be described.
- the AT terminal includes a wireless communication unit 1, a key input unit 2, a display unit 3, an audio output unit 4, a camera unit 5, a control unit 6, and a storage unit 7.
- the wireless communication unit 1 is not illustrated using the EV-DO method or the lx method!
- Key input unit 2 is composed of dial keys, function keys, power keys, dedicated keys for packet transmission request (that is, data communication start), etc., and outputs the operation information of these keys to the control unit 6 as operation signals. To do.
- the display unit 3 is a liquid crystal display, an organic EL display, or the like, for example, and displays various messages, images, and the like based on display signals input from the control unit 6.
- the sound output unit 4 outputs sound and sound to the outside based on the sound signal input from the control unit 6.
- the camera unit 5 is a CCD (Charge Coupled Device) camera, for example, and outputs an image signal of a captured image to the control unit 6 under the control of the control unit 6.
- the control unit 6 Based on a predetermined control program stored in advance in the storage unit 7, an operation signal input from the key input unit 2, a communication state of the wireless communication unit 1, and the like, the control unit 6 It controls the operation.
- the control unit 6 includes a communication control unit 6a having a search function unit 6b, a communication method determination unit 6c, a session establishment function unit 6d, a session configuration function unit 6e, and a communication session state determination unit 6f. .
- Search function unit 6b searches for a channel of a signal through which the base station power is also transmitted via radio communication unit 1.
- the communication method determination unit 6c determines whether or not the base station is compatible with the EV-DO method based on the channel search result by the search function unit 6b.
- the session establishment function unit 6d is a communication protocol for the EV-DO system based on the determination result by the communication system determination unit 6c (specifically, when the base station supports the EV-DO system). Session establishment processing (UATI allocation request) is performed using MP.
- the session configuration function unit 6e performs the session configuration (negotiation such as exchange of parameters related to protocol settings when performing communication using the EV-DO method). Process).
- the communication session state determination unit 6f determines whether the communication session layer with the base station has been established, that is, whether session establishment and session configuration have been completed.
- the communication session state determination unit 6b establishes a session with the base station depending on whether or not the exchange of parameters necessary for communication is completed as described above. And whether or not the session configuration has been completed.
- the communication control unit 6a selectively switches between the two data communication methods, the EV-DO method and the lx method, based on the determination results of the communication method determination unit 6c and the communication session state determination unit 6f.
- the wireless communication unit 1 is controlled to perform the data communication. Details of the selection process of the two data communication methods by the communication control unit 6a will be described later.
- the storage unit 7 is, for example, a flash memory, and stores in advance a control program executed by the control unit 6, and is input from the camera unit 5 and parameters necessary for communication obtained by UATI and negotiation processing. The image signal and other various data are stored.
- the operation of the AT terminal configured as described above (specifically, processing for selecting two data communication methods by the communication control unit 6a) will be described with reference to the flowchart of FIG.
- the following explanation explains the selection process for the two data communication methods immediately after the AT terminal is turned on, and the EV-DO communication session layer has not been established immediately after the power is turned on. (In other words, it is a state in which session establishment and session configuration with the base station is completed).
- the search function unit 6b starts searching for a channel of a signal transmitted from the base station via the wireless communication unit 1.
- the communication method determination unit 6c displays the channel search result by the search function unit 6b. Based on this, it is determined whether or not the base station is compatible with the EV-DO system (step S2).
- the communication control unit 6a uses the lx method as the data communication method. Select and control the wireless communication unit 1 to perform data communication with the base station using the lx method. That is, hand-down to the lx scheme is performed (step S9), and a call process using the lx scheme is performed for the base station (step S10). Thereafter, data communication using the lx method is performed with the base station.
- step S2 determines whether session establishment and session configuration with and are complete.
- Step S3 If it is determined in step S2 that the base station is compatible with the EV-DO system, the flow in FIG. 2, that is, the routine for selecting the two data communication systems (communication system selection routine) is separate. In this routine (communication session layer establishment routine), session establishment processing by the session establishment function unit 6d and negotiation processing for completing the session configuration by the session configuration function unit 6e are performed.
- a wireless communication terminal such as an AT terminal does not perform parallel processing using a plurality of routines. For example, when step S2 of the communication method selection routine is completed, a communication session layer establishment routine is performed. And other routines (such as channel search processing by the search function unit 6b) and return to the communication method selection routine again, while performing interrupt processing with each other at a predetermined timing, Processing of each routine proceeds.
- step S3 that is, if session establishment and session configuration have not been completed, the ability to return to step S2 processing will be interrupted by other routines including the communication session layer establishment routine. It has been executed, and it will take a certain time before returning to step S2 of the communication method selection routine.
- step S3 when “YE S”, that is, when session establishment and session configuration are completed, the communication control unit 6a sets EV as the data communication method. -Select the DO method and control the wireless communication unit 1 to perform data communication with the base station using the EV-DO method. That is, call processing using the EV-DO scheme is performed for the base station (step S4). At this time, the communication control unit 6a transmits a connection request message (that is, a data communication request) to the base station via the wireless communication unit 1 (step S5).
- a connection request message that is, a data communication request
- the communication control unit 6a determines whether or not the data communication request by the EV-DO method as described above is successful (step S6), and "YES", that is, the data communication request is successful. Starts data communication with base stations using the EV-DO method. On the other hand, in step S6, if “NO”, that is, if the data communication request fails due to reasons such as moving outside the communication range, etc.
- the communication control unit 6a subtracts one time from the preset number of retries for data communication requests by the EV-DO method (generally the initial number of retries is set to 3) (step S7), it is determined whether the number of retries is equal to a predetermined threshold value (step S8). In this embodiment, this threshold value is 1.
- step S8 If "NO” in step S8, that is, if it is determined that the number of retries is not equal to the threshold value, the processing after step S2 is repeated to retransmit the data communication request by the EV-DO method. In other words, until the number of retries is equal to 1, the data communication request by the EV-DO method is retried. In step S8, if “YES”, that is, if the number of retries is equal to 1, the data communication request by the EV-DO method is abandoned, the hand is down to the lx method, and the data communication by the lx method is performed. .
- the base station when the base station has not completed session establishment and session configuration with a power base station that supports the EV-DO scheme, Even if there is a packet transmission request, by holding the data communication request using the EV-DO method until the session establishment and session configuration is completed, the number of retries can be prevented from being reduced unnecessarily. It is possible to increase the possibility of data communication using the method. In other words, a wireless communication terminal having two data communication methods to which priority is assigned can be selected efficiently and the data communication method has a high priority. If the DO method is supported, the EV-DO method can be preferentially used as much as possible to ensure a higher communication speed than before.
- the AT terminal using the EV-DO method and the lx method as the two data communication methods has been described.
- the present invention is not limited to this, and priorities are assigned.
- the present invention can be applied to other data communication systems or other terminals as long as they are wireless communication terminals that selectively use two data communication systems.
- the present invention can be used for realizing an efficient selection method of two data communication methods in a wireless communication terminal having two data communication methods to which priorities are assigned. .
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Communication Control (AREA)
Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007540903A JP4633800B2 (ja) | 2005-09-29 | 2006-09-20 | 無線通信端末及び無線通信方法 |
CN2006800353990A CN101273656B (zh) | 2005-09-29 | 2006-09-20 | 无线通信终端以及无线通信方法 |
US12/088,677 US8619743B2 (en) | 2005-09-29 | 2006-09-20 | Radio communication terminal and radio communication method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005285228 | 2005-09-29 | ||
JP2005-285228 | 2005-09-29 |
Publications (1)
Publication Number | Publication Date |
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WO2007046210A1 true WO2007046210A1 (ja) | 2007-04-26 |
Family
ID=37962309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/318639 WO2007046210A1 (ja) | 2005-09-29 | 2006-09-20 | 無線通信端末及び無線通信方法 |
Country Status (5)
Country | Link |
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US (1) | US8619743B2 (ja) |
JP (1) | JP4633800B2 (ja) |
KR (1) | KR100989274B1 (ja) |
CN (1) | CN101273656B (ja) |
WO (1) | WO2007046210A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011021815A3 (en) * | 2009-08-21 | 2011-07-21 | Samsung Electronics Co., Ltd. | Network elements, integrated circuits and methods for routing control |
Families Citing this family (5)
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US8190314B2 (en) * | 2008-05-26 | 2012-05-29 | General Electric Company | System, method, and computer software code for linking a plurality of powered systems having different linking protocols to operate as a single powered system |
US8743809B2 (en) * | 2011-10-07 | 2014-06-03 | Apple Inc. | Channel selection in a multiple carrier multiple radio access technology network |
US10362372B2 (en) * | 2013-12-30 | 2019-07-23 | General Electric Company | System and method of selecting wireless spectrum and protocol based on patient acuity |
JP7029247B2 (ja) * | 2017-08-09 | 2022-03-03 | オムロンヘルスケア株式会社 | ユーザ端末、サーバ装置、及び通信パラメータの設定方法 |
US11360544B2 (en) * | 2018-10-03 | 2022-06-14 | Google Llc | Power management systems and methods for a wearable computing device |
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JP2003092782A (ja) * | 2001-09-18 | 2003-03-28 | Kyocera Corp | 通信装置及び通信方法 |
JP2005507604A (ja) * | 2001-10-30 | 2005-03-17 | ケーティーフリーテル・カンパニー・リミテッド | 移動通信端末機のデータサービス使用履歴管理によるバッテリー待ち受け時間増大方法及びその装置 |
JP2005109899A (ja) * | 2003-09-30 | 2005-04-21 | Kyocera Corp | 無線通信端末 |
JP2005260426A (ja) * | 2004-03-10 | 2005-09-22 | Toshiba Corp | デュアル無線端末装置およびデュアル無線システム |
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US6952416B1 (en) * | 1998-06-22 | 2005-10-04 | Nortel Networks Limited | Treatments in a distributed communications system |
WO2004060013A1 (en) * | 2002-12-30 | 2004-07-15 | Sk Telecom Co., Ltd. | Method and system for preventing call drop by restricting overhead message updated in 1x system during 1xev-do traffic state |
JP3960963B2 (ja) | 2003-10-29 | 2007-08-15 | 京セラ株式会社 | 移動通信端末、移動通信管理装置、移動通信システム、移動通信端末プログラム、移動通信管理プログラムおよび移動通信方法 |
JP4715237B2 (ja) * | 2004-03-12 | 2011-07-06 | パナソニック株式会社 | 無線通信装置および無線通信方法 |
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2006
- 2006-09-20 CN CN2006800353990A patent/CN101273656B/zh not_active Expired - Fee Related
- 2006-09-20 KR KR1020087008062A patent/KR100989274B1/ko active IP Right Grant
- 2006-09-20 US US12/088,677 patent/US8619743B2/en not_active Expired - Fee Related
- 2006-09-20 JP JP2007540903A patent/JP4633800B2/ja not_active Expired - Fee Related
- 2006-09-20 WO PCT/JP2006/318639 patent/WO2007046210A1/ja active Application Filing
Patent Citations (4)
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JP2003092782A (ja) * | 2001-09-18 | 2003-03-28 | Kyocera Corp | 通信装置及び通信方法 |
JP2005507604A (ja) * | 2001-10-30 | 2005-03-17 | ケーティーフリーテル・カンパニー・リミテッド | 移動通信端末機のデータサービス使用履歴管理によるバッテリー待ち受け時間増大方法及びその装置 |
JP2005109899A (ja) * | 2003-09-30 | 2005-04-21 | Kyocera Corp | 無線通信端末 |
JP2005260426A (ja) * | 2004-03-10 | 2005-09-22 | Toshiba Corp | デュアル無線端末装置およびデュアル無線システム |
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WO2011021815A3 (en) * | 2009-08-21 | 2011-07-21 | Samsung Electronics Co., Ltd. | Network elements, integrated circuits and methods for routing control |
US9887909B2 (en) | 2009-08-21 | 2018-02-06 | Samsung Electronics Co., Ltd. | Network elements, integrated circuits and methods for routing control |
Also Published As
Publication number | Publication date |
---|---|
KR20080043871A (ko) | 2008-05-19 |
JP4633800B2 (ja) | 2011-02-16 |
CN101273656B (zh) | 2011-07-06 |
KR100989274B1 (ko) | 2010-10-20 |
CN101273656A (zh) | 2008-09-24 |
US20090268703A1 (en) | 2009-10-29 |
JPWO2007046210A1 (ja) | 2009-04-23 |
US8619743B2 (en) | 2013-12-31 |
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