WO2007097145A1 - 携帯電話通信システム、通信制御方法、及び通信制御プログラム - Google Patents
携帯電話通信システム、通信制御方法、及び通信制御プログラム Download PDFInfo
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- WO2007097145A1 WO2007097145A1 PCT/JP2007/050880 JP2007050880W WO2007097145A1 WO 2007097145 A1 WO2007097145 A1 WO 2007097145A1 JP 2007050880 W JP2007050880 W JP 2007050880W WO 2007097145 A1 WO2007097145 A1 WO 2007097145A1
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- mobile phone
- code list
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
Definitions
- the present invention relates to a mobile phone communication system, and more particularly to a mobile phone communication system that enables a cell connected to a mobile phone to be selected according to its function, a communication control method thereof, and a communication control program thereof.
- Patent Document 2 Japanese Patent Laid-Open No. 2005-51568
- a mobile phone receives network information about neighboring cells regarding all cells adjacent to the currently connected cell.
- these neighboring cell information includes information on whether or not each cell is a cell belonging to a radio base station having a new function.
- a system that can select and connect to cells belonging to a radio base station has not yet been realized.
- a mobile phone acquires information on cells belonging to a radio base station that holds a new function from the network, and the radio base station that holds the new function and the radio base station. It was impossible to easily select communication for all the cells including it.
- the present invention improves the above-described problems of the conventional example, and obtains information on a cell belonging to a radio base station having a new function from a network, and a radio base station having the new function.
- a communication control method in a mobile phone system, and a communication control program therefor which can be selected for communication to only the cell to which it belongs and communication for all cells. Is the purpose.
- each of a plurality of radio base stations connected to a network receives broadcast information including cell information managed by surrounding radio base stations. It has a broadcast information transmission function for transmitting to an unspecified number of mobile phones, and each mobile phone sets a suitable cell as a cell to which it belongs under radio quality indicating that it is suitable for the received broadcast information power communication. It has a cell selection function to select.
- the above-mentioned plurality of radio base stations are a mixture of a higher version radio base station having a specific function and a lower version radio base station having no specific function. Are connected to the upper purge communication mode for connection to the upper version radio base station and to the entire upper and lower version radio base stations.
- a mode selection setting function that enables selection of any of the normal communication modes is provided.
- each mobile phone has communication for connection with a higher version radio base station having a new function and connection for all radio base stations. Normal communication can be selected and performed.
- each of the mobile phones described above requests a scrambling code list having a scramble code of a cell belonging to the higher version radio base station to the network to which each of the radio base stations is connected. It is characterized by having a code list request function.
- Each of the mobile phones described above has a code list receiving function for receiving the above-described scrambling code list to which the network power is also sent.
- the mobile phone side can also request a scrambling code list from the network as needed, and each mobile phone user must collect information on the old and new radio base stations via the mobile phone. Can do.
- each of the mobile phones described above has a code list management function for managing peripheral cell information obtained from the notification information and the scrambling code list.
- the mobile phone can manage information on a daily basis together with the information of the upper version base station and all base stations.
- each mobile phone described above is initially connected to the radio base station in the normal communication mode, and when receiving the scrambling code list to which the network power is also transmitted, to enter the higher version communication mode.
- the physical layer measuring the radio quality has a higher version mode selection function for changing the mode so that the radio quality is measured by the cell specified in the scrambling code list. .
- the cellular phone can enter the higher version communication mode by selecting the connection destination from the radio quality of the cells belonging to the higher version base station.
- each of the mobile phones described above has a cell specified in the scrambling code list when the radio quality of the cell specified in the scrambling code list is measured. If the power is too strong to look, Reporting power It has a non-detection normal communication mode selection function for measuring the wireless quality of the neighboring cells described in the obtained neighboring cell information and entering the normal communication mode. As a result, if the cell specified in the scrambling code list does not have the power to see and the power to enter the higher version communication mode is entered, the normal communication mode is entered immediately, so there is no hesitation such as communication interruption. .
- the mobile phone side when the mobile phone side wants to enter the normal communication mode, it can immediately stop the upper version communication mode and enter the normal communication mode.
- the above-described mobile phone system uses W-CDMA (Wideband) as a communication method.
- W-CDMA Wideband
- a plurality of radio base stations connected to a network and one of the radio base stations are connected to perform radio communication.
- 1 or 2 or more mobile phones that communicate with each other, and the plurality of radio base stations include an upper version radio base station having a specific function and a lower version radio base station having no specific function.
- a communication control method in a mobile phone communication system comprising a plurality of cells, wherein each mobile phone has a cell scrambling code list belonging to the higher version radio base station with respect to the network via a cell to which the mobile phone belongs.
- the neighboring cell information obtained from the broadcast information and the received scrambling code list are managed together.
- An updated peripheral cell information management process may be provided after the code list reception process!
- each of the above mobile phones is in the normal communication control process, and the information of the upper version radio base station and all radio base stations is combined with the daily life without any conscious input by the operator. Can be managed.
- the communication control method of the mobile phone communication system described above functions when the target cell has a strong power in the above-described designated cell radio quality measurement process by the mobile phone.
- a peripheral cell reselecting step of selecting as a cell to which the cell belongs may be provided.
- the cell specified in the scrambling code list does not have the power to find it, and if it does not enter the upper version communication mode, it can immediately enter the normal communication mode without performing any new settings. It becomes.
- a cell measurement stop instruction step may be provided that functions when an instruction to that effect is input and set to stop the measurement of the designated cell. In this way, when it is desired to enter the normal communication mode on the mobile phone side, a communication control method for the mobile phone system that can immediately stop the upper version communication mode and enter the normal communication mode is obtained.
- a communication control program for a mobile phone communication system provides a mobile phone communication system including a plurality of radio base stations and a plurality of mobile phones.
- Each mobile phone that forms part of the communication system has a radio quality measurement function of a neighboring cell that measures the radio quality of the neighboring cell described in the neighboring cell information obtained from the broadcast information received from the radio base station.
- the radio base station includes: A code list request function for requesting a scrambling code list (including a scrambling code) of a cell belonging to a radio base station of an upper version with respect to the network to which the network belongs, and the network power is also specified by the scrambling code list sent.
- a specified cell radio quality measurement function for measuring radio quality for the selected cell, and the scrambler It is characterized in that it allows the computer to execute a designated cell selection function that selects a cell that belongs to the ring code list as a cell to which the cell belongs under the measured radio quality among the cells specified in the ring code list. To do.
- each mobile phone searches for cells belonging to the higher version radio base station, selects their radio quality capability connection destination, enters the upper version communication mode, and the upper version radio base station A communication control program for a mobile phone system that can immediately enter the normal communication mode when it is not discovered or when the higher version communication mode is canceled is obtained.
- the computer is caused to execute the updated neighboring cell information management function for managing the neighboring cell information obtained from the broadcast information received from the radio base station described above and the received scrambling code list together. It may be.
- the mobile phone acquires information on a cell belonging to a radio base station having a new function from the network, and has a new function based on the information (version-up). It is possible to select and connect the communication to only the cells belonging to the wireless base station and the communication to all the cells, so that it is possible to select and connect to the gap. Even if the switching equipment is made, it is possible to easily switch and connect to the old and new radio base stations to cope with this, and the conventional mobile phone communication system, its communication control method, And a communication control program therefor can be realized.
- FIG. 1 shows an overall configuration of the mobile phone communication system 10 in the present embodiment.
- a cellular phone communication system 10 shown in FIG. 1 is configured based on an IMT-2000 (W-CDMA) system configuration, and a user's cellular phone 1 and a plurality of radio communications with the cellular phone 1 are performed.
- Wireless base station 2 and a radio network controller (RNC: Radio Network Controller) 3 provided for overall control of the plurality of radio base stations 2.
- the wireless network control device 3 is connected to a core network (CN) 4 for managing location registration, call control, and user information.
- the core network 4 includes a multimedia signal processing device 4A that performs central processing of the core network 4.
- a range that can be covered by the radio base station 2 is called a cell. Since there can be a plurality of mobile phones 1 in this cell, the radio base station 2 distinguishes these mobile phones 1 with an identifier.
- the wireless network control device 3, the core network 4, and the function server associated with the core network 4 are collectively referred to as the network 6.
- each of the plurality of radio base stations 2 described above has a broadcast information transmission function for transmitting broadcast information including cell information managed by neighboring wireless base stations to an unspecified number of mobile phones 1.
- each mobile phone 1 measures the wireless quality indicating that each mobile phone 1 is suitable for communication of a peripheral cell in its physical layer based on the transmitted broadcast information, and each mobile phone 1 It has a cell selection function that selects an appropriate cell as a cell to which it belongs under quality.
- each of the plurality of radio base stations 2 is a higher version radio having a specific function. It is divided into base stations and lower version radio base stations that do not have this specific function.
- each mobile phone 1 described above includes an upper version communication mode in which only the upper version radio base station is connected for communication, the upper version base station, and the lower version base station. It is equipped with a mode selection setting function that enables selection and setting of any communication mode from the normal communication mode to which all wireless base stations 2 are connected.
- Fig. 2 shows the protocol configuration of the radio interface assumed in the W-CDMA system.
- This protocol configuration also includes layer L1 physical layer (PHY), layer L2 data link layer, and layer L3 network layer strength. Between each layer L1 to L3, a service provided from a lower layer to an upper layer and a service access point for providing the service are defined.
- a logical channel is defined at the service access point between layer L3 and layer L2, and a transport channel is defined at the service access point between layer L2 and layer L1.
- a physical channel is defined as a channel for communication between layer L1 nodes.
- the data link layer of layer L2 is divided into two sub-layers: a radio link control layer (RLC) that controls radio links and a media access control layer (MAC) that performs radio resource allocation control and the like.
- Layer L3 consists of a radio resource control layer (RRC) that directly controls layer L2. Radio quality measurement is controlled by the radio resource control layer (RRC) L3 instructing the physical layer (PHY) L1.
- the mobile phone 1 when the power is turned on, the mobile phone 1 first searches for a frequency and a spreading code (Scrambling Code), and selects an appropriate cell (a range covered by each radio base station 2). Thereafter, broadcast information transmitted (transmitted) from the radio base station 2 is received.
- the broadcast information stores various settings such as the channel settings that the mobile phone 1 should use when standing by, and the “System Information Block Type 11” of them contains cell information that exists in the vicinity of the cell. Stored.
- the neighboring cell information can be received even by a measurement control message.
- the cellular phone 1 uses the received neighboring cell information, the cellular phone 1 measures the wireless quality (for example, received power) of the neighboring cell, and selects a cell (cell movement: Cell Reselection) based on the measurement result. ) Implement the process.
- the radio base station 2A of the normal cell A is notified.
- Information such as cell B is stored as neighboring cell information in “System Information Block Type 11” in the broadcast information.
- Cell phone 1 always measures the radio quality (power) of cell A and cell B! If the cell phone moves and cell B determines that cell B has higher power than cell A, cell 2 Select cell B belonging to. This operation is called cell selection processing.
- the peripheral cell radio quality measurement function program and the peripheral cell selection function program may be configured to be executed by a computer that is actually installed in the mobile phone 1 in advance.
- System Information Block Type 11 in the broadcast information can store a maximum of 32 pieces of cell information in the present embodiment for a cell having the same frequency as that cell. Cells are also distinguished by scrambling codes and frequencies. Similarly, up to 32 pieces of cell information can be stored for different frequencies.
- Fig. 4 (A) shows an example of neighboring cell information (see Fig. 5).
- FIG. 5 shows the situation of neighboring cells in this case.
- Cellular phone 1 can be selected for all peripheral cells from cell 21 to cell 25, including own cell 20. Among these cells, the cellular phone 1 described above selects an appropriate cell by operating the cell selection function described above.
- the 3G (third generation) ZW-CDMA system is used as described above.
- the version of the software that has been released is Release99, Release5, and Release6, and new functions have been added as the version increases.
- Release 99 the version of the software that has been released
- Release 5 the version of the software that has been released
- new functions such as HSDPA (High Speed Downlink Packet Access) will be used.
- a system is formed in such a way that wireless base stations that hold only software Release 99 functions and Release 5 function-compatible wireless base stations that hold new functions are mixed.
- the radio base station 2 that covers the cell and has a new function in the neighboring cell information stored in the broadcast information "System Information Block Type 11". Information on whether or not (Release5 compatible) is included! / No.
- a scrambling code list of cells belonging to a radio base station that newly supports the new function is received from the network operator, and System Information Block Type 11 is also included in the scrambling code list from the neighboring cell information.
- the mobile phone 1 has a code list request function for transmitting a request message to the network in order to obtain a scrambling code list.
- the request message can be started by the user of the mobile phone 1 selecting a scrambling code list request from the MENU button.
- the request message can be in any format, but if an existing message is used; sMS (short Message Service) message ⁇ Nya; 5 S (supplementary Service) request message REGISTER message For example,
- the request message is transmitted by the code list request function program in the computer of the mobile phone 1.
- the received network 6 transmits the scrambling code list to the mobile phone based on the code list transmission function provided in advance.
- the request message is received by the network 6 computer by the code list request reception function program, and the scrambling code list is transmitted by the code list transmission function program.
- Figure 6 shows an example of a sequence related to scrambling code list acquisition using an existing SMS message.
- the procedure for the mobile phone 1 to acquire the scrambling code list from the network 2 using the SMS message will be described in detail with reference to FIG.
- a normal connection establishment process is performed by the radio resource control layer RRC functioning as a radio resource controller (S102).
- a connection processing (CM Connection Management) service request is made from the mobile phone 1 to the network 6 (S103).
- the network 6 confirms the validity of the mobile phone 1 that has accessed the network 6 based on the information of the base station identifier in the received request, and the mobile phone Authentication processing for confirming the validity of the network 6 accessed in 1 is performed mutually (S104). Further, the concealment process is performed so that the control signal and the user information are not intercepted illegally in the wireless section (S105).
- the above-described mobile phone 1 requests the network 6 for a scrambling code list in the form of a CP (Control Protocol) —DATA signal ( S 106: Code list request process).
- CP Control Protocol
- DATA signal S 106: Code list request process
- the CP-6 ACK (acknowledge) signal (S 107) and the scram A CP-DATA signal indicating that the code code list request has been recognized is sent back (S108).
- the cellular phone 1 also sends a CP-ACK signal to the network 6 (S109).
- a code list request process for requesting a scrambling code list is executed by a series of processes from S106 to S109.
- the network 6 transmits a scrambling code list to the mobile phone 1 as a CP-DATA signal (S110: code list transmission step). Thereafter, the CP-ACK (acknowledgement) signal (S111) and the CP-DATA signal indicating that the scrambling code list has been received are sent back from the mobile phone 1 (S112: code list receiving step). In response to this, the network 6 sends back a CP-ACK signal (S113).
- a code list acquisition process for acquiring a scrambling code list is executed by a series of processes from S 110 force to S 113.
- the RRC Radio Resource Controller
- the mobile phone 1 uses the code list request function program for the code list request and the code list reception function program for the code list reception process in the computer.
- the computer uses the code list request reception function program to receive the code list request and uses the code list transmission function program to receive the code list.
- Chart 2 in Fig. 4 (B) shows an example of the scrambling code list obtained in this way.
- Cellular phone 1 combines the peripheral cell information as shown in Figure 1 in Figure 4 (A) with the information in the scrambling code list shown in Figure 2 in Figure 4 (B), and the chart in Figure 4 (C).
- the cells belonging to the radio base station 2 having the new function shown in 3 are marked and updated, and the neighboring cell information is configured and managed. In other words, the update peripheral cell information management process is executed by the mobile phone 1.
- the updated peripheral cell information management function program may be used on the computer provided in the mobile phone 1 for the creation and management of the updated peripheral cell information.
- the mobile phone 1 described above includes only the cells marked in Chart 3 of FIG. Target of line quality (power) measurement. As a result, cells that are not included in the scrambling code list are not subject to measurement! /, And therefore are not subject cells to be selected by the mobile phone 1! Communication limited to cells belonging to station 2 is executed. In other words, this is a selection setting of the higher version communication mode by the mobile phone 1 and is executed by the selection function of the higher version mode provided in the mobile phone 1. As a result, the mobile phone 1 enters the communication mode of the higher version from the normal communication mode.
- the designated cell radio quality measurement function program is used in the computer of the mobile phone 1 for measuring the radio quality (power) of the cells belonging to the radio base station 2 having the new function (designated cell radio quality measurement process). ).
- FIG. 7 shows the situation of neighboring cells in this case. From cell phone 1, cell 2 and cell 4 force S power (radio quality) measurement target and selectable. Among these cells, the radio resource control layer (RRC) of the mobile phone 1 instructs the physical layer (PHY) to select the cell determined as the cell to which it belongs (designated cell selection step).
- RRC radio resource control layer
- PHY physical layer
- a designated cell selection function program is used in the computer of the cellular phone 1.
- the mobile phone receives the scrambling code list as well as network power.
- the scrambling code list stores cell (radio base station) information that can cover a specific location.
- Radio quality control is controlled by the radio resource control layer (RRC) in the physical layer (P
- FIG. 8 shows a procedure by which the radio resource control layer RRC requests radio quality measurement from the physical layer PHY.
- the above-described radio resource control layer RRC has acquired a neighbor list including its own cell in advance (S201).
- the scrambling code shown in the peripheral cell list is, for example, 100Z200Z500Z900Z1000.
- the radio resource control layer RRC indicates this scrambling code and instructs the physical layer PHY to measure the radio quality of the cells included in the neighbor list for communication setting (S202).
- the physical layer PHY measures the radio quality of each cell, and responds to the radio resource control layer RRC with a measurement result in which an appropriate cell belongs to the cell under the measured radio quality (S203).
- the radio resource control layer RRC selects the own cell to which the radio resource control layer RRC belongs, and from the network 6 through the selected own cell, the scrambling code list is processed by the processing method previously executed in FIG. (S204).
- the scrambling code shown in the scrambling code list is, for example, 200Z900.
- the radio resource control layer RRC indicates the scrambling code list and instructs the physical layer PHY to measure the quality of the cells included in the scrambling code list (S205). In response to this instruction, the physical layer PHY measures the radio quality of each instructed cell, and responds to the radio resource control layer RRC with the highest radio quality (power) measurement result indicating the cell (S206).
- the 200Z900 cell corresponding to the specified scrambling code could not be found as a result of the cell radio quality measurement by the physical layer PHY (S207). This is a case where a large number of actual occurrences occur. In the case where it is useful, the physical layer PHY sends a message to this effect to the radio resource control layer RRC as a radio quality measurement report (S208).
- each mobile phone 1 described above enters the above-described higher version communication mode, so that the scrambling code is measured when measuring the radio quality of the cell specified in the scrambling code list.
- the normal communication mode selection at the time of non-detection that enters the normal communication mode by measuring the radio quality of the peripheral cell described in the peripheral cell information obtained by the broadcast information capability It has a function.
- each of the mobile phones 1 described above terminates the above-described higher version communication mode.
- the radio quality measurement of the cell specified in the scrambling code list is stopped, A normal communication mode selection function for entering the normal communication mode by measuring the radio quality of the neighbor cell described in the neighbor cell information is provided.
- the radio resource control layer RRC power is actually instructed to the physical layer PHY to measure the radio quality of the cells included in the neighbor list (S210).
- the physical layer PHY measures the radio quality of each cell included in the neighbor list, and uses the radio resource control layer as a result of measuring the appropriate cell as the cell to which it belongs under the measured radio quality.
- the peripheral cell measurement return function program is used in the computer of the mobile phone 1 for the steps of measuring the wireless quality of the cells included in the peripheral list and selecting the cells.
- each mobile phone has a code list request function for requesting a scrambling code list from the network and a scrambling code list transmitted from the network. And a code list management function for managing the neighboring cell information and the scrambling code list, which can also provide broadcast information power.
- each of the mobile phones described above scrambling the physical layer (PHY) that measures the radio quality when the radio resource control layer (RRC) receives the scrambling code list transmitted from the network.
- Higher version mode selection function to instruct measurement change to perform radio quality measurement only for cells specified in the ring code list, and physical layer (PHY) clamp ring code list to measure radio quality
- the radio resource control layer (RRC) informs the physical layer (PHY) to measure the radio quality of the neighboring cell according to the information on the neighboring cell obtained. It is equipped with a function for selecting the lower version mode when not detected.
- each mobile phone is equipped with a radio resource control layer (RRC) card ring code cord.
- RRC radio resource control layer
- the present invention is configured as described above, a mobile phone that can be effectively used when a plurality of base stations having a new function and those having no new function are mixed.
- a telephone communication system can be realized and has a wide range of possibilities in the field of mobile phone communication.
- FIG. 1 is a block diagram showing a configuration of a mobile phone communication system according to the present invention.
- FIG. 2 is an explanatory diagram showing a protocol configuration of a radio interface assumed in the mobile phone communication system disclosed in FIG.
- FIG. 3 is an explanatory diagram showing cell selection processing of the mobile phone disclosed in FIG. 1.
- FIG. 3 is an explanatory diagram showing cell selection processing of the mobile phone disclosed in FIG. 1.
- FIG. 4 A diagram showing the cell and scrambling code of each radio base station
- Fig. 4 (A) is a diagram showing the correspondence between neighboring cell information and scrambling code
- Fig. 4 (B) is the requested cell.
- Fig. 4 (C) shows an example of information and the scrambling code sent in response to this
- Fig. 4 (C) shows the case where the information of the scrambling code list shown in Fig. 2 is combined with the neighboring cell information in Fig. 1. It is a chart which shows the example of.
- FIG. 5 is an explanatory diagram showing the relationship between the mobile phone and the peripheral cells in the case of FIG.
- FIG. 6 is a sequence diagram showing a procedure for acquiring a scrambling code list in the present invention.
- FIG. 7 is an explanatory diagram showing the relationship between the mobile phone and the peripheral cells in the case of FIG.
- FIG. 8 is a sequence diagram showing a procedure in which the radio resource control layer requests radio quality measurement from the physical layer in the present invention.
Abstract
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JP2008501643A JP4924601B2 (ja) | 2006-02-22 | 2007-01-22 | 携帯電話通信システム、通信制御方法、及び通信制御プログラム |
CN2007800065112A CN101390434B (zh) | 2006-02-22 | 2007-01-22 | 便携电话通信系统和通信控制方法 |
EP07707143A EP1988732A4 (en) | 2006-02-22 | 2007-01-22 | COMMUNICATION SYSTEM WITH PORTABLE TELEPHONES, COMMUNICATION CONTROL METHOD AND COMMUNICATION CONTROL PROGRAM |
US12/280,018 US8244245B2 (en) | 2006-02-22 | 2007-01-22 | Portable telephone communication system, communication control method, and communication control program |
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JP2006045921 | 2006-02-22 | ||
JP2006-045921 | 2006-02-22 |
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- 2007-01-22 JP JP2008501643A patent/JP4924601B2/ja not_active Expired - Fee Related
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JPWO2009034930A1 (ja) * | 2007-09-10 | 2010-12-24 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信方法、移動交換局、無線基地局及び移動局 |
JP4729636B2 (ja) * | 2007-09-10 | 2011-07-20 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信方法、移動交換局及び移動局 |
US9264983B2 (en) | 2007-09-10 | 2016-02-16 | Ntt Docomo, Inc. | Mobile communication method, mobile exchange station, radio base station and mobile station |
JP2009071482A (ja) * | 2007-09-12 | 2009-04-02 | Mitsubishi Electric Corp | 通信方法 |
JP2012517145A (ja) * | 2009-02-01 | 2012-07-26 | クゥアルコム・インコーポレイテッド | 無線デバイスのアクセス・ストラタム管理のための装置および方法 |
US9480003B2 (en) | 2009-02-01 | 2016-10-25 | Qualcomm Incorporated | Apparatus and method for determining cell suitability for a wireless device in a communication system |
WO2017170159A1 (ja) * | 2016-03-31 | 2017-10-05 | 京セラ株式会社 | 無線端末及び基地局 |
US10931729B2 (en) | 2016-03-31 | 2021-02-23 | Kyocera Corporation | Method for performing codec adaptation in a UE operating in a communication network |
US11457055B2 (en) | 2016-03-31 | 2022-09-27 | Kyocera Corporation | Method for performing codec adaptation in a UE operating in a communication network |
Also Published As
Publication number | Publication date |
---|---|
EP1988732A1 (en) | 2008-11-05 |
CN101390434B (zh) | 2012-07-18 |
CN101390434A (zh) | 2009-03-18 |
JP4924601B2 (ja) | 2012-04-25 |
US20100167736A1 (en) | 2010-07-01 |
EP1988732A4 (en) | 2012-11-21 |
JPWO2007097145A1 (ja) | 2009-07-09 |
US8244245B2 (en) | 2012-08-14 |
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