WO2003041432A1 - Systeme de communication a corps mobile, appareil de commande de communication radio, appareil de communication a corps mobile et procede de communication a corps mobile - Google Patents
Systeme de communication a corps mobile, appareil de commande de communication radio, appareil de communication a corps mobile et procede de communication a corps mobile Download PDFInfo
- Publication number
- WO2003041432A1 WO2003041432A1 PCT/JP2002/011617 JP0211617W WO03041432A1 WO 2003041432 A1 WO2003041432 A1 WO 2003041432A1 JP 0211617 W JP0211617 W JP 0211617W WO 03041432 A1 WO03041432 A1 WO 03041432A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- information rate
- base station
- mobile communication
- mobile
- connections
- Prior art date
Links
- 238000004891 communication Methods 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims description 36
- 238000010295 mobile communication Methods 0.000 claims abstract description 91
- 230000008859 change Effects 0.000 claims description 19
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 49
- 238000010586 diagram Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 230000009467 reduction Effects 0.000 description 4
- 238000005562 fading Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000021156 lunch Nutrition 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/34—Reselection control
- H04W36/38—Reselection control by fixed network equipment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
-
- 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]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/22—Negotiating communication rate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/40—TPC being performed in particular situations during macro-diversity or soft handoff
Definitions
- Mobile communication system wireless communication control device, mobile communication device, and mobile communication method
- the present invention relates to a mobile communication system including a plurality of base stations and a mobile communication device, a radio communication control device thereof, a mobile communication device, and a mobile communication method.
- a plurality of base stations having a certain communicable range are arranged in various places, and a mobile station (mobile communication device) is used.
- the system can be used when it is located in the cell of at least one of the base stations. That is, the cells of each base station are aggregated to form a system servicer as a whole.
- the communication information rate between the base station and the mobile station depends on the communication quality, and in particular, the relation with the signal to interference power ratio (SIR). Raw is high.
- SIR signal to interference power ratio
- a high SIR high transmission power at the base station
- a low information rate is transmitted from the base station to the mobile station.
- the SIR at the mobile station may be low (the transmission power at the base station may be low). The same can be said for the case where transmission is performed from a mobile station to a base station.
- radio waves transmitted from a base station are attenuated in the process of propagating through space and reach the mobile station. This attenuation is affected by the distance between the base station and the mobile station and the surrounding terrain or features. Therefore, when the transmission power is kept constant, when the transmitting mobile station moves, the received power at the base station fluctuates drastically (faging).
- Feedback-type transmission power control means that the reception side measures the reception quality and compares it with the target value to the radio frame or time slot in order to follow the fluctuation of the radio wave propagation state due to fading, etc. It returns to the transmitting side in a sufficiently short cycle, and the transmitting side controls the transmission power based on the returned comparison result.
- FIG. 7 is a diagram illustrating a signal level state when transmission power control is performed.
- transmission power control is performed to obtain the same communication quality, and mobile stations with a greater distance from the base station Communication with M1 is performed at a higher transmission power than mobile station M2, which is closer to the base station.
- the mobile stations Ml and M2 can obtain the same reception quality.
- mobile stations M 2 and M 3 have the same distance from the base station, but mobile station M 3 performs communication at a higher information rate than mobile station M 2.
- the base station and mobile station M3 communicate with a higher transmission power than the transmission power in the communication between the base station and mobile station M2.
- the transmission power control can not only keep the reception quality constant, but also alleviate the fluctuation of the communication quality due to the location in the service area where the mobile station is located. It is also a technology that can reduce transmission power and thereby improve power use efficiency.
- reception quality serving as a criterion for performing transmission power control is based on the SIR described above.
- CRC Cyclic Redundancy Check
- error rate such as BLER (Block Error Rate) and BER (Bit Error Rate).
- a mobile station can perform communication when it is located in a cell of a base station, and when a mobile station moves across cells of a plurality of base stations, it becomes mobile.
- the base stations with which the stations communicate are sequentially switched. This is generally called a handover and can be roughly divided into two types.
- a conventional technique related to handover is described in Japanese Patent Publication No. 2002-232232.
- the first method is called a hard handover (HHO) method.
- HHO hard handover
- the second method is called the Diversity Handover (DHO) method, and the mobile station establishes a connection with a new base station before releasing the radio channel with the connected base station.
- DHO Diversity Handover
- a wireless channel is set up, and then the wireless channel with the previously connected base station is released.
- a mobile station temporarily communicates with a plurality of base stations at the same time. At this time, each of the multiple radio channels set by the mobile station is called a DHO branch (or a diversity launch).
- the DHO method has an advantage over the HHO method in that instantaneous communication interruption does not occur when the connection destination base station is switched.
- the mobile station when the mobile station is located at the edge of the cell of a certain base station and is communicating only with that base station (in the case of the HHO system), the reception quality is kept constant. Large transmission power is required. For this reason, there may be a case where sufficient power cannot be secured to compensate for a decrease in signal level due to fusing.
- the mobile station when the mobile station is located at the edge of the cell, the signals transmitted from the previously connected base station and the newly connected base station are combined, and the mobile station is combined. In, a certain reception quality can be maintained.
- FIG. 8 is a diagram showing a state of communication power when the DHO method is applied.
- mobile station M4 is located at the edge of the cell of base station B1, and is also included in the cell of base station B2.
- the mobile station M5 is included only in the cell of the base station B1, and is located at the end of the cell of the base station B1, like the mobile station M4.
- the transmission power to the mobile station M4 due to the action of the DHO is the same as that transmitted by the base station B1 and the base station B2.
- the transmission power is distributed and the total transmission power becomes a predetermined transmission power. That is, the transmission power of each of the base stations B 1 and B 2 becomes a value obtained by dividing a predetermined transmission power, and the transmission power from the base station B 1 to the mobile station M 4 is obtained from the transmission power from the base station B 1 to the mobile station M 5.
- the transmission power of is smaller.
- the required predetermined communication quality can be obtained at the mobile station by the transmission power control and the DHO, regardless of the position within the communicable range of the mobile communication system. .
- the power used for communication of the mobile station is larger than when it is located near the base station.
- the transmission power distributed to a plurality of base stations is relatively small, but large transmission power is required as a whole system. Also, when communication is performed at a high information rate, the required transmission power is higher.
- the power that can be transmitted by the base station is limited, so if there is a mobile station that needs high transmission power at the edge of the cell, power resources will be squeezed and the acceptance capacity of the base station will decrease. Was to be done. As a result, the communication efficiency of the entire system was reduced.
- An object of the present invention is to prevent a reduction in communication efficiency of the entire system in a mobile communication system to which the DHO method is applied. Disclosure of the invention
- the mobile communication system comprises: 2 11617 A plurality of base station apparatuses (for example, base stations 21 to 31 in FIG. 1) having a predetermined wireless communicable area (for example, cells in base stations 21 to 23, 31 and 32 in FIG. 1). 23, 31, 32), a mobile communication device capable of wireless communication with the base station device (for example, mobile stations 41 to 43 in FIG. 1), and a plurality of the base station devices.
- a wireless control device for example, the wireless control devices 20 and 30 in FIG. 1) for controlling the mobile communication device, wherein the mobile communication device is located in an area where a plurality of the wireless communicable areas overlap.
- Means for managing the number of “DHO branches” in the form for example, DH0 control unit 20 e and storage device in FIG. 2) 20 d), based on the number of connections managed by the number-of-connections management means, the mobile communication device, and the base station device corresponding to the wireless communication area where the mobile communication device is located.
- an information rate changing means for example, an information rate control unit 20c in FIG. 2) for changing an information rate in the communication.
- connection number management means sequentially manages the number of connections that change as the mobile station moves
- information rate change means sequentially, based on the number of connections managed by the connection number management means, The information rate is changed.
- the information rate changing means may change the information rate to a value obtained by dividing a reference information rate, which is an information rate when the mobile station apparatus is connected to one base station apparatus, by the number of connections.
- the information rate changing unit further includes a storage unit (for example, a storage device 20 d in FIG. 2) that stores a predetermined information rate according to the number of connections, and the storage unit according to the number of connections. The information rate is changed to a predetermined information rate stored by the computer.
- a storage unit for example, a storage device 20 d in FIG. 2 that stores a predetermined information rate according to the number of connections, and the storage unit according to the number of connections. The information rate is changed to a predetermined information rate stored by the computer.
- the wireless control device includes:
- a plurality of base station devices having a predetermined wireless communicable area, a mobile communication device capable of wireless communication with the base station device, and a wireless control device for controlling the plurality of base station devices collectively;
- the mobile communication device is connected to a base station device corresponding to the plurality of wireless communicable areas when the plurality of wireless communicable areas are located in an overlapping area.
- a wireless control device for a mobile communication system comprising: a connection number management unit that manages the number of connections that is the number of base station devices to which the mobile communication device is connected; and the connection number management unit.
- the number-of-connections management means sequentially manages the number of connections that change as the mobile station moves, and the information-rate change means includes the number-of-connections management means The information rate is sequentially changed based on the number of connections managed by. Further, the information rate changing means may change the information rate to a value obtained by dividing a reference information rate, which is an information rate when the mobile station apparatus is connected to one base station apparatus, by the number of connections.
- the information rate changing means further includes a storage means for storing a predetermined information rate according to the number of connections, and changes the information rate to a predetermined information rate stored in the storage means according to the number of connections. It is characterized by:
- the mobile communication device comprises:
- a plurality of base station devices having a predetermined wireless communicable area, a mobile communication device capable of wireless communication with the base station device, and a wireless control device for controlling the plurality of base station devices collectively;
- the mobile communication apparatus is connected to a base station apparatus corresponding to the plurality of wireless communicable areas.
- An apparatus wherein an information rate in communication with a connected base station can be changed based on an instruction from the wireless control apparatus.
- the mobile communication method according to the present invention includes:
- a plurality of base station devices having a predetermined wireless communicable area, a mobile communication device capable of wireless communication with the base station device, and a wireless control device for controlling the plurality of base station devices collectively;
- the mobile communication device may be a mobile communication method in a mobile communication system connected to a base station device corresponding to the plurality of wireless communicable areas when the plurality of wireless communicable areas are located in an overlapping area.
- a connection number management step for managing the number of connections, which is the number of base station devices to which the mobile communication device is connected; Information for changing an information rate in communication between the mobile communication device and the base station device corresponding to a wireless communicable area where the mobile communication device is located, based on the managed number of connections; And a rate changing step.
- the connection number management step the number of connections that change as the mobile station moves by 3 is sequentially managed, and in the information rate change step, the information is sequentially determined based on the managed connection number. It is characterized by changing rates.
- the information rate changing step the information rate is changed to a value obtained by dividing a reference information rate, which is an information rate when the mobile station apparatus is connected to one base station apparatus, by the number of connections. It is characterized by.
- the information rate changing step the information rate is changed to a predetermined information rate stored in advance according to the number of connections.
- FIG. 1 is a system configuration diagram of a mobile communication system 1 according to the present invention.
- FIG. 2 is a block diagram showing a functional configuration of the radio control device 20.
- FIG. 3 is a block diagram showing a functional configuration of the mobile station 41.
- FIG. 4 is a diagram illustrating an information rate control process performed by the mobile communication system 1.
- mobile station 41 starts communication in the cell of base station 21 (position A), and mobile station 41 moves to the cells of base stations 22 and 23 (position 8). It is a figure showing a state.
- FIG. 6 is a flowchart showing an information rate update process performed by the information rate control unit 20c.
- FIG. 7 is a diagram showing a signal level state when transmission power control is performed.
- FIG. 8 is a diagram showing the state of communication power when the DHO method is applied.
- Mobile communication system 1 uses a diversity handover (DHO) system. It is a moving body communication system.
- DHO diversity handover
- FIG. 1 is a system configuration diagram of a mobile communication system 1 according to the present invention.
- a mobile communication system 1 includes a backbone network 10, radio control devices 20, 30, base stations 21 to 23, 31, 32, and mobile stations 41 to 43.
- the backbone network 10 is a general mobile phone network including an exchange and the like, and the wireless controllers 20 and 30 communicate with each other via the backbone network 10.
- the radio controllers 20 and 30 instruct the base stations 21 to 23, 31, and 32 to control the information rate and to add or delete a DH ⁇ branch. Performs control to control 32.
- FIG. 2 is a block diagram showing a functional configuration of the wireless control device 20. Since the configuration of the wireless control device 30 is the same, only the wireless control device 20 will be described.
- the radio controller 20 includes a user buffer 20a, a queuing processor 20b, an information rate controller 20c, a storage device 20d, and a DH0 controller 20e. It is comprised including.
- the user data buffer 20a temporarily stores the data transmitted by the backbone network 10 and outputs the data to the queuing processing unit 20b at a predetermined time.
- the queuing processing unit 20b controls the transmission order of the data input from the user data buffer 20a, and transmits each data to a predetermined base station device in accordance with the transmission order.
- the information rate control unit 20c based on the number of DHO branches of each mobile station stored in the storage device 20d, transmits from the base station apparatus to the mobile station apparatus for each data transmitted by the queuing processing unit 2 Ob. Specify the information rate when transmitting.
- the storage device 20d stores the number of DHO branches of each mobile station, and the content is updated by an instruction from the DH @ control unit 20e.
- the number of DHO branches indicates the number of base stations to which mobile stations are simultaneously connected by diversity handover.
- the DHO control unit 20 e instructs a predetermined base station to connect or disconnect to the mobile station in response to a request to add or delete a DHO branch from the mobile station, 0 Add or delete a branch.
- the base stations 21 to 23, 31, and 32 can communicate with mobile stations located in the cell via the antenna.
- the base stations 21 to 23, 31, and 32 can change the information rate in communication with the mobile station located in the cell as appropriate. Communicate with the station.
- the mobile stations 41 to 43 are mobile communication terminal devices such as mobile phones, for example, and can be connected to the base stations 21 to 23, 31, and 32 by the DHO method.
- FIG. 3 is a block diagram showing a functional configuration of the mobile station 41. Since the functional configurations of the mobile stations 41 to 43 are the same, the functional configuration of the mobile station 41 will be described as an example.
- the mobile station 41 includes an input unit 41-1 for inputting information, a control unit 41-2 for controlling the entire mobile station, a storage unit 41-3 for storing various information, A RAM (Random Access Memory) 41- serving as a work area in various processes, a VRAM (Video Random Access Memory) 41-5 storing display data, and a display unit 41-6 displaying information stored in the VRAM. And a communication unit 41-7 for performing communication with the base station.
- a control unit 41-2 for controlling the entire mobile station
- a storage unit 41-3 for storing various information
- a RAM (Random Access Memory) 41- serving as a work area in various processes
- VRAM Video Random Access Memory
- a display unit 41-6 displaying information stored in the VRAM.
- a communication unit 41-7 for performing communication with the base station.
- the mobile station 41 communicates with the base station via the communication section 41-7, and the control section 41-2 communicates with the base station in accordance with the information rate change instruction transmitted from the base station. Change the information rate in communication.
- FIG. 4 is a diagram showing an information rate control process performed by the mobile communication system 1.
- the information rate control process is started in the mobile communication system 1 by each mobile station communicating via one of the base stations.
- the mobile station 41 starts communication within the cell of the base station 21 (position A), and the mobile station 41 moves to the cell of the base stations 22 and 23 (BC The position is described as an example.
- the radio network controller 20 checks the number of DHO branches of the mobile station 41 connected to the base station 21 (step S Do Then, the radio controller 20 checks whether or not the information rate of the mobile station 41 is a value corresponding to the number of DHO branches (step S2), and determines that the information rate of the mobile station 41 is equal to the number of DHO branches. If not, the information rate of the mobile station 41 is changed to a value corresponding to the number of DHO branches (step S3).
- the case where the information rate of the mobile station 41 does not correspond to the number of DHO branches is that the mobile station 41 is located at the end of the cell of the base station 21 and the base station 22 in FIG. It is included in the cell and connected to the base stations 21 to 23 by the DHO (from the position A to the position B). Then, the base station 41 communicates with the mobile station 41 at a predetermined information rate (the information rate after the change in step S3) (step S4).
- step S2 If it is determined in step S2 that the information rate of the mobile station 41 corresponds to the number of DHO branches, the process proceeds to step S4 (communication at the previous information rate).
- the radio controller 20 determines whether the mobile station 41 is not connected to any of the base stations (communication has ended) (step S5), and the mobile station 41 determines whether any of the base stations is connected. With the bureau. If it is determined that the connection is established, the process proceeds to step S1.
- step S5 if it is determined in step S5 that the mobile station 41 is not connected to any base station, the information rate control processing ends.
- the information rate update process is a process performed by the information rate control unit 20c of the wireless control device 20.
- FIG. 6 is a flowchart showing an information rate update process performed by the information rate control unit 20c.
- the information rate control unit 20c when the information rate update process is started, the information rate control unit 20c, based on the identification number of the mobile station 41 input as the data transmission destination, Obtain the number of DHO branches of mobile station 41 from storage device 20d (Step P Do).
- the information rate control unit 20 c transmits the initial information rate (DHO broadcast) of the mobile station 41.
- the information rate is updated as a new information rate by dividing the information rate when the number of lunches is "1") by the number of DHO branches, and the updated information rate is stored in the queuing processing unit 20b. Notify (step P 2).
- the information rate control unit 20c manages the initial information rate for each mobile station in association with the identification number (see FIG. 6).
- information rate control section 20c transmits the updated information rate to base station 21 and instructs mobile station 41 to update the information rate (step P3).
- the mobile communication system 1 to which the present invention is applied appropriately changes the information rate in the communication between the mobile station and the base station based on DH ⁇ number of branches. Therefore, it is possible to prevent pressure on power resources in the base station, and to prevent a decrease in the amount of reception by the base station and a decrease in communication efficiency of the entire mobile communication system 1.
- the radio controllers 20 and 30 by managing the number of DHO branches by the radio controllers 20 and 30, the effect of the present invention can be achieved with almost no change in hardware resources to existing mobile communication systems. Obtainable.
- the information rate is controlled according to the number of DH • branches.
- the transmission power is transmitted at the upper limit of the transmission power (maximum power). A situation where quality cannot be obtained may occur.
- the required communication quality can be obtained. Also, contrary to the case described above, when the transmission is performed at the lower limit (minimum power) of the transmission power, a situation may occur in which the required communication quality is greatly exceeded. Increasing the rate can make efficient use of electricity.
- controlling the transmission power and controlling the information rate differ in the content of the control and the effect obtained when the control is performed, and the present invention has a unique effect.
- the information rate in communication between a mobile station device and a base station device is appropriately changed based on the number of connections of each mobile station device.
- a plurality of base station apparatuses having a predetermined wireless communicable area, a mobile communication apparatus capable of wirelessly communicating with the base station apparatus, and a wireless control apparatus that controls the plurality of base station apparatuses in a unified manner.
- the mobile communication device is a mobile communication system connected to a base station device corresponding to the plurality of wireless communicable areas when the plurality of wireless communicable areas are located in an overlapping area.
- Connection number management means for managing the number of connections, which is the number of base station devices connected to the mobile communication device
- an information rate in communication between the mobile communication device and the base station device corresponding to a wireless communication area where the mobile communication device is located is determined.
- a mobile communication system comprising:
- connection number management means sequentially manages the number of connections that change as the mobile station moves
- the information rate changing means changes the information rate to a value obtained by dividing a reference information rate, which is an information rate when the mobile station apparatus is connected to one base station apparatus, by the number of connections.
- the information rate changing means further comprises a storage means for storing a predetermined information rate according to the number of connections,
- a plurality of base station apparatuses having a predetermined wireless communicable area, a mobile communication apparatus capable of wirelessly communicating with the base station apparatus, and a wireless control apparatus that controls the plurality of base station apparatuses in an integrated manner
- the mobile communication device includes a plurality of the wireless communication coverage areas overlapping with each other.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/493,425 US20040248584A1 (en) | 2001-11-07 | 2002-07-11 | Mobile body communication system, radio communication control apparatus mobile body communication apparatus, and mobile body communication method |
EP02802722A EP1453330A4 (en) | 2001-11-07 | 2002-11-07 | MOBILE BODY COMMUNICATION SYSTEM, RADIO COMMUNICATION CONTROL DEVICE, MOBILE BODY COMMUNICATION DEVICE AND MOBILE BODY COMMUNICATION PROCESS |
JP2003543339A JPWO2003041432A1 (ja) | 2001-11-07 | 2002-11-07 | 移動体通信システム、無線通信制御装置、移動体通信装置および移動体通信方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001342219 | 2001-11-07 | ||
JP2001/342219 | 2001-11-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003041432A1 true WO2003041432A1 (fr) | 2003-05-15 |
Family
ID=19156110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/011617 WO2003041432A1 (fr) | 2001-11-07 | 2002-11-07 | Systeme de communication a corps mobile, appareil de commande de communication radio, appareil de communication a corps mobile et procede de communication a corps mobile |
Country Status (5)
Country | Link |
---|---|
US (1) | US20040248584A1 (ja) |
EP (1) | EP1453330A4 (ja) |
JP (1) | JPWO2003041432A1 (ja) |
CN (1) | CN1272974C (ja) |
WO (1) | WO2003041432A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006279858A (ja) * | 2005-03-30 | 2006-10-12 | Nec Corp | 移動無線通信制御方法と移動無線通信端末並びに基地局 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050070293A1 (en) * | 2003-09-24 | 2005-03-31 | Kyocera Corporation | Communication terminal and base station selection method |
US7664466B2 (en) | 2005-03-22 | 2010-02-16 | Ntt Docomo, Inc. | Transmission rate control method, transmission rate control system, and mobile station |
CN101150832B (zh) * | 2007-10-31 | 2010-06-02 | 中兴通讯股份有限公司 | 对wimax通信资源进行动态管理的方法、装置及系统 |
EP2983447A1 (en) * | 2012-07-06 | 2016-02-10 | Qualcomm Technologies, Inc. | Configurable host interface using multi-radio device and architecture for wlan offload |
CN105323830B (zh) * | 2014-07-24 | 2020-04-07 | 中兴通讯股份有限公司 | 节能补偿方法、节能补偿恢复方法及装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10511835A (ja) * | 1995-12-04 | 1998-11-10 | エアロネット ワイヤレス コミュニケーションズ,インコーポレイテッド | データ伝送パラメータが動的に変更されるセルラー通信システム |
JPH11252615A (ja) * | 1998-03-02 | 1999-09-17 | Hitachi Ltd | 通信接続切替方法及び通信接続切替装置 |
JPH11275623A (ja) * | 1998-03-20 | 1999-10-08 | Fujitsu Ltd | 移動無線通信システムにおける回線状況に応じたゾーン選択方法 |
JPH11313356A (ja) * | 1998-04-27 | 1999-11-09 | Sony Corp | 移動通信システム |
JP2001238239A (ja) * | 2000-02-23 | 2001-08-31 | Fujitsu Ltd | 移動通信システム及びハンドオーバー方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0702863B1 (en) * | 1994-02-17 | 2004-10-20 | Motorola, Inc. | Method and apparatus for controlling encoding rate in a communication system |
US5712624A (en) * | 1995-03-03 | 1998-01-27 | Motorola, Inc. | Method and apparatus for optimizing receiver synchronization in a radio communication system |
US6018662A (en) * | 1998-09-08 | 2000-01-25 | Nortel Networks Corporation | Method for performing progressive soft handoff in CDMA systems |
JP4231593B2 (ja) * | 1999-07-21 | 2009-03-04 | 株式会社日立コミュニケーションテクノロジー | 通信システム及びその通信方法 |
US6563810B1 (en) * | 1999-09-30 | 2003-05-13 | Qualcomm Incorporated | Closed loop resource allocation |
US6393276B1 (en) * | 2000-01-12 | 2002-05-21 | Telefonaktiebolaget Lm Ericsson | Mobile station assisted forward link open loop power and rate control in a CDMA system |
JP3338821B2 (ja) * | 2000-02-23 | 2002-10-28 | 日本電気通信システム株式会社 | 移動体通信輻輳制御方式 |
US6823193B1 (en) * | 2000-02-28 | 2004-11-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Downlink transmit power synchronization during diversity communication with a mobile station |
US6542736B1 (en) * | 2000-04-04 | 2003-04-01 | Telefonaktiebolaget Lm Ericsson (Publ) | Efficient radio link adaptation and base station sector selection in a radio communication system |
-
2002
- 2002-07-11 US US10/493,425 patent/US20040248584A1/en not_active Abandoned
- 2002-11-07 CN CNB028213890A patent/CN1272974C/zh not_active Expired - Fee Related
- 2002-11-07 EP EP02802722A patent/EP1453330A4/en not_active Withdrawn
- 2002-11-07 WO PCT/JP2002/011617 patent/WO2003041432A1/ja active Application Filing
- 2002-11-07 JP JP2003543339A patent/JPWO2003041432A1/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10511835A (ja) * | 1995-12-04 | 1998-11-10 | エアロネット ワイヤレス コミュニケーションズ,インコーポレイテッド | データ伝送パラメータが動的に変更されるセルラー通信システム |
JPH11252615A (ja) * | 1998-03-02 | 1999-09-17 | Hitachi Ltd | 通信接続切替方法及び通信接続切替装置 |
JPH11275623A (ja) * | 1998-03-20 | 1999-10-08 | Fujitsu Ltd | 移動無線通信システムにおける回線状況に応じたゾーン選択方法 |
JPH11313356A (ja) * | 1998-04-27 | 1999-11-09 | Sony Corp | 移動通信システム |
JP2001238239A (ja) * | 2000-02-23 | 2001-08-31 | Fujitsu Ltd | 移動通信システム及びハンドオーバー方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1453330A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006279858A (ja) * | 2005-03-30 | 2006-10-12 | Nec Corp | 移動無線通信制御方法と移動無線通信端末並びに基地局 |
JP4595629B2 (ja) * | 2005-03-30 | 2010-12-08 | 日本電気株式会社 | 移動無線通信制御方法と移動無線通信端末並びに基地局 |
Also Published As
Publication number | Publication date |
---|---|
CN1272974C (zh) | 2006-08-30 |
US20040248584A1 (en) | 2004-12-09 |
EP1453330A4 (en) | 2008-04-09 |
JPWO2003041432A1 (ja) | 2005-03-03 |
EP1453330A1 (en) | 2004-09-01 |
CN1579105A (zh) | 2005-02-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6091967A (en) | Scalable radio platform | |
JP4344427B2 (ja) | 無線通信システムにおいて容量を改善するための方法および装置 | |
WO2022089002A1 (zh) | 多链路低时延通信方法、装置、存储介质和电子装置 | |
JPH0787093A (ja) | ワイヤレスlanで送信機電力を制御する方法及び装置並びにそれに使用するデータパケット | |
US20160373968A1 (en) | Method of setting a plurality of parameters in a wireless telecommunication network | |
KR20110048564A (ko) | Wan 시그널링 및 피어 투 피어 시그널링을 지원하는 혼합형 무선 통신 시스템에서의 전력 제어 및/또는 간섭 관리에 관한 방법 및 장치 | |
JP4012391B2 (ja) | 移動局、移動通信システム、ハンドオーバー制御方法、ハンドオーバー制御プログラム、及び記録媒体 | |
US8478326B2 (en) | Communication system, communication device and communication rate modification method | |
JP2007228213A (ja) | 移動通信システムにおける無線基地局の負荷制御方式 | |
US7366536B2 (en) | Transmission power control method and radio control apparatus in mobile packet communication system | |
US6760597B2 (en) | Power control method for CDMA wireless communication networks | |
US7539173B2 (en) | Radio communication system, radio terminal, base station, control equipment and communication method | |
US7583630B2 (en) | Method and system for providing mobile station control of data transmission rates in a wireless network | |
AU743413B2 (en) | Mobile data communication system | |
US20050041615A1 (en) | Radio control appararus, mobile communication method, mobile communication program, and mobile communication system | |
WO2003041432A1 (fr) | Systeme de communication a corps mobile, appareil de commande de communication radio, appareil de communication a corps mobile et procede de communication a corps mobile | |
US7349712B2 (en) | Communications system with transmitting power control and method for the same | |
JP2000232670A (ja) | 通信装置、通信システムおよびその方法 | |
US7512411B2 (en) | Radio communication system, radio network controller, mobile station and down link transmission power control method | |
JP4315940B2 (ja) | 移動体通信システム、基地局装置、移動局装置、送信電力制御方法、及びプログラム | |
JPWO2003041302A1 (ja) | 情報レート制御方法、移動局、無線制御装置、基地局及び移動通信システム | |
JP3898018B2 (ja) | 送信電力制御方法及び移動局 | |
US8457259B2 (en) | Method and system for partitioning gain for wireless radio frequency integrated circuits | |
JP2001238239A (ja) | 移動通信システム及びハンドオーバー方法 | |
JPH0870479A (ja) | 通信チャンネル切替システム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2003543339 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10493425 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20028213890 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2002802722 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2002802722 Country of ref document: EP |