WO2010064365A1 - 基地局装置、基地局装置の制御方法、処理装置、記憶媒体、及び無線通信システム - Google Patents
基地局装置、基地局装置の制御方法、処理装置、記憶媒体、及び無線通信システム Download PDFInfo
- Publication number
- WO2010064365A1 WO2010064365A1 PCT/JP2009/006087 JP2009006087W WO2010064365A1 WO 2010064365 A1 WO2010064365 A1 WO 2010064365A1 JP 2009006087 W JP2009006087 W JP 2009006087W WO 2010064365 A1 WO2010064365 A1 WO 2010064365A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cell
- frequency channel
- base station
- neighboring
- secondary cell
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/27—Control channels or signalling for resource management between access points
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
Definitions
- the present invention relates to a base station that can autonomously determine a frequency channel used for wireless communication with a transfer station.
- DC-HSDPA Dual Cell-HSDPA operation
- HSDPA High Speed Downlink Packet Access
- the second serving HS-DSCH cell is referred to as a “secondary serving HS-DSCH cell”.
- the first serving HS-DSCH cell is simply referred to as a “serving HS-DSCH cell”.
- the secondary serving HS-DSCH cell is formed subordinately on condition that the serving HS-DSCH cell is generated.
- a serving HS-DSCH cell may be called a “primary carrier” or a “base carrier”.
- the secondary serving HS-DSCH cell may be referred to as a “secondary carrier” or an “extended carrier”.
- the first serving HS-DSCH cell is referred to as a “primary serving HS-DSCH cell” in order to clarify the identification of the two serving HS-DSCH cells.
- the primary serving HS-DSCH cell is abbreviated as “primary cell”
- the secondary serving HS-DSCH cell is abbreviated as “secondary cell”.
- the primary cell and the non-HSDPA cell are collectively referred to as “non-secondary cell”.
- a non-HSDPA cell is a normal cell generated by a base station that does not support HSDPA and DC-HSDPA.
- FIG. 13 shows a physical channel used for performing packet communication by DC-HSDPA between a base station (Node B) 91 supporting DC-HSDPA and a mobile station 92.
- the HS-PDSCH is a downlink physical channel for data transmission that transfers the transport channel HS-DSCH.
- HS-SCCH is used for transmission of downlink signaling information related to HS-DSCH transmission.
- HS-DPCCH is an uplink physical channel used for transmitting feedback information regarding HS-DSCH transmission from the mobile station 92 to the base station 91.
- the feedback information includes an ACK response related to hybrid ARQ (Automatic repeat-request) and CQI (channel quality indication).
- Uplink DPCH and downlink DPCH are used for transmission and reception of control information related to DC-HSDPA.
- P-CPICH Primary Common Pilot Channel
- DPCH Dedicated Physical Channel
- HS-DPCCH Dedicated Physical Control Channel (uplink) for HS-DSCH
- HS-DSCH High Speed Downlink Shared Channel
- HS-PDSCH High Speed Physical Downlink Shared Channel
- HS-SCCH Shared Control Channel for HS-DSCH
- P-CCPCH Primary Common Control Physical Channel
- S-CCPCH Secondary Common Control Physical Channel SCH: Synchronization Channel
- HS-SCCH Order for instructing the mobile station (UE) from the base station to enable and disable the secondary cell is transmitted to the mobile station using HS-SCCH which is a downlink control channel.
- RRC Radio Network Controller
- the small base station is installed, for example, in a home or small office by the owner of the small base station, and is connected to a higher-level device on the core network side using ADSL (Asymmetric Digital Subscriber Line) or an optical fiber line.
- ADSL Asymmetric Digital Subscriber Line
- 3GPP defines such a small base station as “Home NodeB” and “Home eNodeB” and is proceeding with standardization work (see Non-Patent Document 4, for example).
- Home NodeB is a small base station for UMTS (Universal Mobile Telecommunications System), and "Home node B” is a small base station for LTE (Long Term Evolution).
- UMTS Universal Mobile Telecommunications System
- Home node B is a small base station for LTE (Long Term Evolution).
- LTE Long Term Evolution
- home base station a small base station
- home cell a cell generated by the home base station
- radio resources used by the base station for communication with the mobile station are determined in advance.
- the home base station it is considered that the home base station autonomously selects a radio resource.
- the radio resource is, for example, a frequency channel in an FDMA (Frequency Division Multiple Access) system and a spread code in a CDMA (Code Division Multiple Access) system.
- FDMA Frequency Division Multiple Access
- CDMA Code Division Multiple Access
- W-CDMA Wideband-CDMA
- the radio resource is a frequency channel and a scrambling code.
- the radio resource is a physical resource block.
- a physical resource block is a basic unit of radio resources used for downlink data transmission from a base station to a mobile station, includes a plurality of OFDM subcarriers in the frequency domain, and includes at least one symbol time in the time domain.
- a home base station receives a permission list including a plurality of radio resources (specifically, frequency channels and scrambling codes) candidates from a management system connected by an xDSL line or an optical fiber line, It describes that the radio signal reception signal strength and CIR (Carrier-to-Interference-Ratio) are measured for each radio resource candidate included in the permission list. Furthermore, the home base station of Patent Document 1 autonomously selects a radio resource candidate with the minimum received signal strength and uses it for communication with the mobile station. The reason for selecting a radio resource candidate with the minimum reception level is that it is considered that interference with cells formed by neighboring base stations can be minimized.
- radio resources specifically, frequency channels and scrambling codes
- the home base station of Patent Literature 1 determines the initial transmission power based on the selected radio resource using the received signal strength and CIR measured previously. Specifically, the initial transmission power is determined so as to provide a sufficient communication service in a desired communication range (for example, within 20 m) in consideration of the interference level from the neighboring base stations.
- the inventors of the present application examined the frequency channel selection of the home base station when the home base station is installed around the base station supporting DC-HSDPA.
- DC-HSDPA the priority of communication service provision by the secondary cell is considered to be relatively lower than communication service provision by non-secondary cells (primary cell and non-HSDPA cell).
- the secondary cell is considered to be temporarily used when high-speed data transfer is necessary. For this reason, it is assumed that the average interference amount which a secondary cell exerts on surrounding cells is lower than that of a non-secondary cell that is always used.
- the home base station disclosed in Patent Document 1 determines a frequency channel to be assigned to a cell formed by itself based on the reception power of a signal transmitted by radio from a neighboring base station.
- the neighboring base station uses the secondary cell during the period in which the home base station disclosed in Patent Document 1 is measuring a signal from the neighboring base station.
- the received power from the peripheral secondary cells in the home base station may be larger than the received power from the peripheral primary cells and non-HSDPA cells.
- the home base station disclosed in Patent Document 1 is the same as that used in the neighboring primary cell or non-HSDPA cell in order to avoid interference with the neighboring secondary cell that is temporarily used. May be selected as a frequency channel to be assigned to a cell formed by itself. Such an operation reduces the validity of the frequency channel selection of the home base station.
- the present invention has been made based on the above-described studies, and suppresses interference from a base station that can autonomously select a frequency channel to be used in a cell (self cell) formed by itself to surrounding non-secondary cells.
- the purpose is to do.
- the base station apparatus includes a radio communication unit and a frequency channel control unit.
- the wireless communication unit performs wireless communication with a mobile station.
- the frequency channel control unit determines a frequency channel used in the own cell formed by the wireless communication unit. Further, the frequency channel control unit identifies whether or not a peripheral cell formed by a peripheral base station is a secondary cell that is formed subordinately on the condition that a primary cell is generated.
- the frequency channel different from the one used in the above is preferentially selected as the frequency channel used in the own cell.
- a second aspect of the present invention is a control method for a base station apparatus.
- the method includes the following steps (a) and (b). (A) identifying whether a neighboring cell formed by a neighboring base station is a secondary cell that is subordinately formed on the condition that a primary cell is generated; and (b) a neighboring non-secondary cell. The step of selecting a frequency channel different from that used as a frequency channel used in the own cell formed by the base station apparatus in preference to the frequency channel used in the non-secondary cells in the vicinity.
- a third aspect of the present invention is a processing apparatus for base station equipment that performs wireless communication with a mobile station.
- the processing apparatus uses a process for identifying whether or not a neighboring cell formed by a neighboring base station is a secondary cell that is formed dependently on the condition that a primary cell is generated, and a neighboring non-secondary cell.
- a process of preferentially selecting a frequency channel different from that used as a frequency channel to be used in the own cell formed by the base station device is executed.
- a fourth aspect of the present invention is a program for causing a computer to execute control processing related to a base station device that performs wireless communication with a mobile station.
- the control process includes the following steps (a) and (b). (A) identifying whether a neighboring cell formed by a neighboring base station is a secondary cell that is subordinately formed on the condition that a primary cell is generated; and (b) a neighboring non-secondary cell. A step of selecting a frequency channel different from that used as a frequency channel used in the own cell formed by the base station device in preference to a frequency channel used in the surrounding non-secondary cells.
- the wireless communication system includes first and second base stations.
- the first base station includes a radio communication unit and a frequency channel control unit.
- the wireless communication unit performs wireless communication with the mobile station.
- the frequency channel control unit identifies whether or not a neighboring cell formed by the second base station is a secondary cell that is formed subordinately on the condition that a primary cell is generated. A frequency channel different from that used is preferentially selected as a frequency channel used in the own cell formed by the wireless communication unit.
- the base station that can autonomously select the frequency channel of its own cell can effectively suppress the interference exerted on the peripheral non-secondary cells in preference to the interference exerted on the peripheral secondary cells.
- FIG. 1 is a diagram illustrating a configuration example of a wireless communication system including a home base station 1 according to the present embodiment.
- the radio communication system according to the present embodiment will be described as an FDD (Frequency Division Duplex) -CDMA, more specifically, a W-CDMA radio communication system.
- FDD Frequency Division Duplex
- the home base station 1 is connected to a core network 83 of a mobile communication carrier via a home gateway (home GW) 81, and relays traffic between the mobile station 6-1 and the core network 83.
- the home base station 1 is used by connecting to a fixed communication line such as an ADSL (Asymmetric Digital Subscriber Line), an optical fiber, a coaxial cable, etc., and is connected to the home GW 81 via an IP (Internet Protocol) communication network or the Internet. Connected.
- ADSL Asymmetric Digital Subscriber Line
- IP Internet Protocol
- the home base station 1 is a base station that supports DC-HSDPA, and generates a primary cell and a secondary cell having different frequency channels.
- the home base station 1 transmits a common physical channel (P-CPICH, SCH, etc.) for forming a primary cell and a secondary cell, and carries a HS-DSCH in each of two serving HS-DSCH cells ( HS-PDSCH).
- the home base station 1 determines the frequency channel of the primary cell in consideration of the frequency channel used in the neighboring cells. More specifically, the home base station 1 generates as little overlap as possible between the frequency channel assigned to its primary cell and the frequency channel used in the surrounding non-secondary cells (primary cell and non-HSDPA cell). To be determined. In other words, the home base station 1 uses a frequency channel in which a neighboring cell is not used or a frequency channel used in a neighboring secondary cell in a neighboring non-secondary cell (a neighboring primary cell and a non-HSDPA cell). It is assigned to its own primary cell with priority over existing frequency channels. In order to perform such frequency channel assignment, the home base station 1 identifies attributes of neighboring cells. A specific example of the procedure in which the home base station 1 determines the frequency channel for the primary cell will be described later.
- the peripheral base station 7 generates a peripheral cell and communicates with the mobile station 6-2.
- the neighboring cell is an upper layer macro cell formed so as to cover the home cell (primary cell and secondary cell) generated by the home base station 1.
- the peripheral base station 7 is connected to the core network 83 via a radio network controller (RNC: Radio Network Controller) 82 and relays traffic between the mobile station 6-2 and the core network 83.
- RNC Radio Network Controller
- the peripheral base station 7 may be a home base station that forms a home cell.
- the neighboring base station 7 is a base station that supports DC-HSDPA.
- the neighboring base station 7 may be a base station that supports only single-cell HSDPA operation.
- the neighboring base station 7 may be a base station that does not support HSDPA and DC-HSDPA and forms a non-HSDPA cell.
- the home GW 81 performs information transfer between the home base station 1 and the core network 83.
- the RNC 82 performs communication control and information transfer between the mobile station 6-2 and the core network 83 existing in the peripheral cell formed by the subordinate peripheral base station 7.
- FIG. 2 is a block diagram illustrating a configuration example of the home base station 1.
- the wireless communication unit 11 receives an uplink signal transmitted from the mobile station 6-1 via the antenna 10.
- the received data processing unit 12 restores received data by performing various processes such as despreading of received uplink signals, RAKE combining, deinterleaving, channel decoding, and error correction.
- the obtained reception data is transferred to the home GW 81 via the wired communication unit 14.
- the home base station has an RNC function for autonomous radio resource control by the home base station. Therefore, the home base station 1 may have an RNC function.
- the home base station 1 has the RNC function, if the received data obtained by the received data processing unit 12 is a location registration request or a radio channel establishment request of the mobile station 6-1, to execute these controls
- the received data is sent to an RNC function unit (not shown) of the home base station 1.
- the transmission data processing unit 13 acquires transmission data transmitted to the mobile station 6-1 from the wired communication unit 14, and performs error correction coding, rate matching, interleaving, and the like to generate a transport channel. Further, the transmission data processing unit 13 adds a control information such as a TPC (Transmit Power Control) bit to the data sequence of the transport channel to generate a radio frame. Further, the transmission data processing unit 13 performs a spreading process and symbol mapping to generate a transmission symbol string.
- the radio communication unit 11 performs a process such as orthogonal modulation, frequency conversion, and signal amplification on the transmission symbol sequence to generate a downlink signal, and transmits this to the mobile station 6-1.
- the frequency channel control unit 15 determines a frequency channel to be assigned to the primary cell and the secondary cell.
- the mobile station mode receiving unit 16 receives a radio signal transmitted from the neighboring base station 7 and measures the signal quality.
- the signal quality to be measured may be a physical quantity that changes according to the attenuation of the radio signal transmitted from the neighboring base station 7.
- the mobile station mode receiving unit 16 may measure the received power (RSCP: Received Signal Code Power) of the common pilot channel P-CPICH from neighboring cells.
- RSCP Received Signal Code Power
- the reception circuit of the mobile station mode reception unit 16 may also be used as the reception circuit of the wireless communication unit 11.
- FIG. 3 is a flowchart showing the overall procedure for determining a frequency channel.
- the mobile station mode reception unit 16 performs signal reception for at least one frequency channel. As described above, in order to obtain the signal quality of the signal transmitted from the neighboring cell, the mobile station mode receiving unit 16 measures the received power (RSCP) of the P-CPICH transmitted from the neighboring base station 7 and the like. Just do it.
- the mobile station mode receiving unit 16 may receive a predetermined physical channel (for example, P-CCPCH) in order to identify neighboring cells described later.
- P-CCPCH predetermined physical channel
- the frequency channel control unit 15 identifies cell attributes of neighboring cells that use the measured frequency channel. Specifically, the frequency channel control unit 15 may identify whether or not the neighboring cell is a secondary cell formed for DC-HSDPA.
- the procedure for identifying the cell attribute will be described with reference to the flowcharts of FIGS.
- FIG. 4 is a flowchart showing an example of the cell attribute identification procedure.
- the frequency channel control unit 15 determines whether a neighboring cell is detected in the measured frequency channel. This determination may be made based on whether or not the common pilot channel (P-CPICH) is received in the frequency channel for which the measurement is performed. For example, when the received power (RSCP) of P-CPICH is below a predetermined threshold (for example, ⁇ 100 dBm), the frequency channel control unit 15 may determine that the frequency channel is unused.
- P-CPICH common pilot channel
- the frequency channel control unit 15 determines whether or not the detected neighboring cell is a secondary cell (step S202). In addition, the said determination can also be paraphrased as determining whether a surrounding cell is a non-secondary cell (a primary cell or a non-HSDPA cell).
- the first determination method is a method of identifying a secondary cell based on whether or not a predetermined physical channel is transmitted. This method can be used, for example, when a broadcast channel (P-CCPCH) is transmitted in a non-secondary cell (primary cell or non-HSDPA cell) and no P-CCPCH is transmitted in a secondary cell.
- P-CCPCH is a downlink common physical channel that transfers a transport channel (BCH: Broadcast channel) that transmits broadcast information.
- FIG. 5A is a flowchart showing an execution procedure of the first determination method.
- the frequency channel control unit 15 determines whether or not a broadcast channel (P-CCPCH) is received on the measured frequency channel. When P-CCPCH is received, it determines with the surrounding cell using the said frequency channel being a non-secondary cell (step S302). On the other hand, when P-CCPCH is not received, the frequency channel control unit 15 determines that the neighboring cell using the frequency channel is a secondary cell (step S303).
- P-CCPCH broadcast channel
- the second determination method is a method for identifying a secondary cell based on the content of predetermined information included in a received signal from a neighboring cell. This method can be used when there is a difference in the content of transmission information between the secondary cell and the non-secondary cell.
- the access restriction information (Cell Barred) included in the broadcast information is set to “valid value” indicating “access restricted” in the secondary cell, and “invalid value” indicating “no access restriction” in the non-secondary cell.
- the frequency channel control unit 15 may determine whether or not it is a secondary cell with reference to the access restriction information.
- access restriction information Cell Barred
- RRC Radio Resource Control
- FIG. 5B is a flowchart showing an execution procedure of the second determination method.
- the frequency channel control unit 15 determines the value of the access restriction information received on the measured frequency channel. When the access restriction information indicates an invalid value, it is determined that the neighboring cell that uses the frequency channel is a non-secondary cell (step S402). On the other hand, when the access restriction information indicates a valid value, the frequency channel control unit 15 determines that the neighboring cell that uses the frequency channel is a secondary cell (step S403).
- identification information that can identify the secondary cell may be included in the broadcast information transmitted through the broadcast channel (P-CCPCH).
- the frequency channel control unit 15 may determine the cell attribute with reference to the identification information included in the broadcast information.
- the frequency channel control unit 15 stores the identification result of the cell attribute in step S102.
- 6A and 6B are tables showing examples of stored data of frequency channel measurement information including cell attribute identification results.
- the table in FIG. 6A includes the measurement results of the three frequency channels F1 to F3.
- “usability status” indicates a temporary determination result as to whether or not each of the frequency channels F1 to F3 is usable for the primary cell.
- the frequency channel control unit 15 may set the availability status of the corresponding frequency channel to “available” when the neighboring cell is not detected and when it is determined that the neighboring cell is the secondary cell. Further, when it is determined that the neighboring cell is a non-secondary cell, the frequency channel control unit 15 may set the availability status of the corresponding frequency channel to “unusable”.
- the status of the frequency channel F1 is set to “available” because it is determined that the RSCP is not used by the neighboring cells because RSCP is equal to or less than a predetermined threshold (for example, -100 dBm) . Further, the status of the frequency channel F2 is set to “available” because it is determined that it is used by the secondary cell. On the other hand, the status of the frequency channel F3 is set to “unusable” because it is determined that it is used by a non-secondary cell.
- a predetermined threshold for example, -100 dBm
- the meaning of the information held in the table of FIG. 6B is the same as that of FIG. 6A.
- the statuses of all frequency channels F1 to F3 are set to “unusable” because they are used by non-secondary cells.
- the frequency channel control unit 15 displays the availability status of the frequency channel when the RSCP is equal to or less than a predetermined threshold (for example, ⁇ 85 dBm). It may be “available”.
- a predetermined threshold for example, ⁇ 85 dBm
- the frequency channel control unit 15 determines a frequency channel to be allocated to the primary cell. The determination of the frequency channel to be assigned to the primary cell is performed using the identification result of the cell attribute in step S102. Specifically, the frequency channel control unit 15 prioritizes frequency channels that are not used by neighboring cells and frequency channels that are used by neighboring secondary cells over frequency channels that are used by neighboring non-secondary cells. To its primary cell.
- FIG. 7 is a flowchart showing an example of the processing procedure of step S103.
- the flowchart of FIG. 7 shows a procedure for determining the frequency channel for the primary cell with reference to the frequency channel measurement information as shown in FIGS. 6A and 6B.
- step S501 the frequency channel measurement information is referred to, and it is determined whether or not there is a frequency channel whose use status is labeled as “available”.
- the frequency channel control unit 15 selects the frequency channel with the smallest RSCP from the frequency channels labeled “available” as the primary cell. (Step S502). For example, when the frequency channel measurement information shown in FIG. 6A is obtained, the frequency channel F1 is selected for the primary cell of the home base station 1.
- the frequency channel control unit 15 selects the frequency channel with the smallest RSCP from the frequency channels labeled “unavailable” as the primary cell. (Step S503). For example, when the frequency channel measurement information shown in FIG. 6B is obtained, the frequency channel F3 is selected for the primary cell of the home base station 1.
- FIG. 8 is a sequence diagram showing the interaction between the peripheral base station 7, the home base station 1, the mobile station 6-1, and the mobile station 6-2 when determining a frequency channel to be assigned to the primary cell of the home base station 1. It is.
- FIG. 8 shows a case where the channel configuration is different between the primary cell and the secondary cell. Specifically, the broadcast-use common physical channel P-CCPCH is transmitted in the primary cell, but the P-CCPCH is not transmitted in the secondary cell.
- the neighboring base station 1 transmits a physical channel group related to P-CPICH, P-CCPCH, and HSDPA of the primary cell.
- the physical channel group indicated by “HSDPA @ PRIMARY” in the figure includes downlink HS-SCCH, downlink HS-PDSCH, and uplink HS-DPCCH.
- the neighboring base station 1 transmits a physical channel group related to P-CPICH and HSDPA of the secondary cell.
- the physical channel group indicated by “HSDPA @ SECONDARY” in the figure includes downlink HS-SCCH and downlink HS-PDSCH. Note that the order of describing steps S601 to S605 is convenient, and these physical channels are transmitted in accordance with a predetermined timing relationship based on the SCH.
- step S606 the home base station 1 receives a radio signal from a neighboring cell and performs quality measurement.
- Step S606 corresponds to step S101 in FIG.
- steps S607 and S608 the home base station 1 identifies attributes of neighboring cells and determines a frequency channel to be allocated to its own primary cell.
- steps S607 and S608 correspond to steps S102 and S103 in FIG.
- step S609 the home base station 1 sets up a primary cell and a secondary cell.
- steps S610 to S614 the home base station 1 performs data transmission (HS-DSCH transfer) by the primary cell and the secondary cell.
- FIGS. 9A, 9C and 9E are conceptual diagrams showing how the frequency channels of the primary cells of the four home base stations 1 (HNB1 to HNB4) are sequentially determined.
- HNB1 to HNB4 home base stations 1
- FIGB, 9D, and 9F are graphs showing the received power of HNB1 to HNB4.
- FIG. 9A shows a case where HNB2 is newly arranged in an environment where HNB1 is arranged.
- HNB1 uses F1 as a primary cell and F2 as a secondary cell.
- FIG. 9B is a graph showing received power (RSCP) in HNB 2 of P-CPICH transmitted by HNB 1 and the identification result of the secondary cell.
- HNB2 uses F2 for its primary cell. This is because both F1 and F2 are used by HNB1 and F2 is used for the secondary cell.
- FIG. 9C shows a case where HNB3 is newly arranged in an environment where HNB1 and HNB2 are arranged.
- HNB1 uses F1 as a primary cell and F2 as a secondary cell.
- HNB2 uses F1 for a secondary cell and uses F2 for a primary cell.
- the received power in HNB3 is as shown in FIG. 9D.
- the HNB 3 uses F2 as its primary cell. Both F1 and F2 are used for neighboring primary cells, but the reason why RSCP is relatively small is that F2.
- FIG. 9E shows a case where HNB4 is newly arranged in an environment where HNB1, HNB2 and HNB3 are arranged.
- HNB1 uses F1 as a primary cell and F2 as a secondary cell.
- HNB2 and HNB3 use F1 as a secondary cell and F2 as a primary cell.
- the received power in HNB4 is as shown in FIG. 9F.
- the HNB 4 uses F1 for its primary cell. Both F1 and F2 are used for neighboring primary cells, but the reason why RSCP is relatively small is that F1.
- the home base station 1 identifies the attributes of neighboring cells and preferentially assigns a frequency channel different from that used in neighboring non-secondary cells to its own primary cell. assign. For this reason, the probability that the same frequency channel as the surrounding non-secondary cell is selected as the frequency channel of the primary cell of the home base station 1 decreases. Therefore, the home base station 1 can effectively suppress the interference to the peripheral primary cell and the non-HSDPA cell in preference to the interference to the peripheral secondary cell.
- the home base station 1 may determine the frequency channel to be allocated to the secondary cell, similarly to the determination of the frequency channel to be allocated to the primary cell. Further, in the present embodiment, the home base station 1 has been described as a base station that supports DC-HSDPA. However, the home base station 1 may be a base station that supports only single cell operation HSDPA. The home base station 1 may be a base station that does not support both HSDPA and DC-HSDPA. In this case, the home base station 1 may determine a frequency channel to be allocated to its own non-HSDPA cell according to the above-described primary cell frequency channel determination procedure.
- the allocation frequency channel determination process performed by the frequency channel control unit 15 described above may be realized using a semiconductor processing device such as an ASIC or DSP.
- the allocation frequency channel determination process causes a computer such as a microprocessor to execute a control program describing the processing procedure described with reference to FIGS. 3 to 7 (except for step S101 by the mobile station mode reception unit 16). May be realized.
- This control program can be stored in various types of storage media, and can be transmitted via a communication medium.
- the storage medium includes, for example, a flexible disk, a hard disk, a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD, a ROM cartridge, a RAM memory cartridge with battery backup, a flash memory cartridge, a nonvolatile RAM cartridge, and the like.
- the communication medium includes a wired communication medium such as a telephone line, a wireless communication medium such as a microwave line, and the Internet.
- the home base station 2 also executes the frequency channel determination process of the primary cell similar to the above-described first embodiment of the present invention during operation.
- the home base station 2 once determines the frequency channel of the primary cell and the secondary cell and starts operation, when the home base station 2 discovers another frequency channel having a better condition than the frequency channel currently used for the primary cell, Switch the frequency channel for a cell.
- the home base station 2 monitors neighboring cells during operation when a frequency channel overlapping with neighboring non-secondary cells (primary cell or non-HSDPA cell) is assigned to its own primary cell. The monitoring of neighboring cells includes measurements of other frequency channels that are different from the current primary cell.
- the home base station 2 finds a frequency channel that is not used in the surrounding non-secondary cells (that is, a frequency channel with good conditions)
- the home base station 2 switches the frequency channel for the primary cell.
- FIG. 10 is a block diagram illustrating a configuration example of the home base station 2.
- the functions and operations of the antenna 10, the wireless communication unit 11, the reception data processing unit 12, the transmission data processing unit 13, the wired communication unit 14, and the mobile station mode reception unit 16 in FIG. 10 have already been described in the first embodiment of the invention. Similar to the corresponding components described.
- the frequency channel control unit 25 determines a frequency channel to be assigned to the primary cell and the secondary cell in the same procedure as the frequency channel control unit 15 already described before the dual cell operation is started. Furthermore, the frequency channel control unit 25 acquires measurement information from the mobile station mode receiving unit 16 even after communication with the mobile station 6-1 is started, and searches for a frequency channel that is not used for a non-secondary cell. When a frequency channel that is not used for a non-secondary cell is found, the frequency channel control unit 25 assigns the found frequency channel to the primary cell.
- FIG. 11 is a flowchart showing a processing procedure of the home base station 5 regarding reselection of the frequency channel of the primary cell.
- the process of the flowchart shown in FIG. 11 may be executed when the same frequency channel used in the surrounding non-secondary cells is used in the primary cell of the home base station 2 in an overlapping manner.
- the reselection of the frequency channel of the primary cell may be executed periodically at a predetermined time period.
- step S701 the frequency channel control unit 25 determines whether the secondary cell is being used.
- the frequency channel control unit 25 stops the HS-DSCH transfer in the secondary cell, and notifies the mobile station 6-1 of the stop of the secondary cell (step S702).
- the notification of the secondary cell stop to the mobile station 6-1 may be performed by transmitting a command such as RRC MESSAGE (Deactivation) or HS-SCCH ORDER (Deactivation).
- steps S101 to S103 subsequent to step S702 the same processing as in steps S101 to S103 in FIG. 2 described above may be performed. However, measurement of the frequency channel currently assigned to the primary cell may be omitted.
- step S103 When a frequency channel that is not used by a neighboring cell or a frequency channel that is used by a neighboring secondary cell is found, switching of the frequency channel for the primary cell is determined in step S103.
- the frequency channel control unit 25 When switching of the frequency channel for the primary cell is determined, the frequency channel control unit 25 notifies the mobile station 6-1 of the change of the frequency channel for the primary cell (steps S703 and S704).
- the notification may be performed, for example, by transmitting RRC (MESSAGE (Reconfiguration).
- the frequency channel control unit 25 When a frequency channel that is not used in the non-secondary cell is not found, the frequency channel control unit 25 notifies the mobile station 6-1 to resume the secondary cell (steps S703 and S705).
- the notification may be performed by transmitting a command such as RRC ⁇ MESSAGE (Activation) or HS-SCCH ORDER (Activation).
- FIG. 12 is a sequence diagram showing the interaction between the peripheral base station 7, the home base station 2, the mobile station 6-1, and the mobile station 6-2.
- the home base station 2 stops the secondary cell by transmitting HS-SCCH ORDER (Deactivation) to the mobile station 6-1.
- Steps S601 to S608 in FIG. 12 are the same as the corresponding steps S601 to S608 in FIG.
- step S802 the home base station 2 notifies the mobile station 6-1 of the change of the frequency channel for the primary cell by transmitting RRC MESSAGE (Reconfiguration). As described above, when the frequency channel for the primary cell is not changed, the home base station 2 may notify the mobile station 6-1 of the resumption of the secondary cell.
- RRC MESSAGE Reconfiguration
- Steps S610 to S614 in FIG. 12 are the same as the corresponding steps S610 to S614 in FIG. 8 described above.
- the home base station 2 once determines the frequency channel of the primary cell and the secondary cell, and after starting communication with the mobile station 6-1, the frequency is continuously increased. Monitor channel usage. For this reason, the home base station 2 can dynamically respond to changes in the usage status of the frequency channel, and can more effectively suppress interference with the surrounding primary cells and non-HSDPA cells.
- the home base station 2 may be a base station supporting only HSDPA operated in a single cell.
- the home base station 2 may be a base station that does not support both HSDPA and DC-HSDPA.
- the frequency channel determination process performed by the frequency channel control unit 25 may be realized using an ASIC, DSP, microprocessor, or the like.
- At least part of the frequency channel determination processing by the frequency channel controllers 15 and 25 described in the first and second embodiments of the invention may be executed by a device (for example, RNC) arranged in the home GW 81 or the core network 83.
- a device for example, RNC
- each process included in the procedure for determining the frequency channel for the primary cell described as being performed by the home base stations 1 and 2 is arbitrary between the home base stations 1 and 2 and a higher-level device to which the base base stations 1 and 2 are connected. Can be shared.
- the present invention is applied to a base station supporting W-CDMA DC-HSDPA.
- the application destination of the present invention is not limited to a base station supporting W-CDMA DC-HSDPA. That is, the present invention can be applied to any base station that can autonomously determine the frequency channel used for wireless communication with the transfer station regardless of whether the downlink multiple access method is CDMA or not. Is possible.
- each physical channel is identified by a difference in orthogonal code (channelization code).
- each physical channel is identified by a difference in tone (subcarrier).
- the home base stations 1 and 2 determine whether or not the neighboring cell is a secondary cell.
- the determination of whether or not a neighboring cell is a secondary cell is only one specific example of the priority determination of neighboring cells.
- an aspect of the present invention includes a base station device described below.
- the base station apparatus according to an aspect of the present invention includes a radio communication unit that performs radio communication with a mobile station, and a frequency channel control that determines a frequency channel used in the own cell formed by the radio communication unit. Part.
- the frequency channel control unit determines a priority of at least one neighboring cell formed by at least one neighboring base station, and a frequency used in a cell having a lower priority among the at least one neighboring cell.
- a channel is selected as a frequency channel used in the own cell in preference to a frequency channel used in a cell having a high priority.
- the said base station apparatus should just determine the priority of a periphery cell based on the alerting
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
P-CPICH:Primary Common Pilot Channel
DPCH:Dedicated Physical Channel
HS-DPCCH:Dedicated Physical Control Channel (uplink) for HS-DSCH
HS-DSCH:High Speed Downlink Shared Channel
HS-PDSCH:High Speed Physical Downlink Shared Channel
HS-SCCH:Shared Control Channel for HS-DSCH
P-CCPCH:Primary Common Control Physical Channel
S-CCPCH:Secondary Common Control Physical Channel
SCH:Synchronisation Channel
(a)周辺の基地局によって形成される周辺のセルがプライマリセルの生成を条件として従属的に形成されるセカンダリセルであるか否かを識別するステップ、及び
(b)周辺の非セカンダリセルで使用されているのと異なる周波数チャネルを前記周辺の非セカンダリセルで使用されている周波数チャネルより優先して前記基地局装置が形成する自セルで使用される周波数チャネルとして選択するステップ。
(a)周辺の基地局によって形成される周辺のセルがプライマリセルの生成を条件として従属的に形成されるセカンダリセルであるか否かを識別するステップ、及び
(b)周辺の非セカンダリセルで使用されているのと異なる周波数チャネルを前記周辺の非セカンダリセルで使用されている周波数チャネルより優先して前記基地局機器が形成する自セルで使用される周波数チャネルとして選択するステップ。
図1は、本実施の形態にかかるホーム基地局1を含む無線通信システムの構成例を示す図である。なお、本実施の形態にかかる無線通信システムは、FDD(Frequency division Duplex)-CDMA、より具体的にはW-CDMA方式の無線通信システムであるとして説明を行う。
本実施の形態にかかるホーム基地局2は、上述した発明の実施の形態1と同様のプライマリセルの周波数チャネル決定処理を運用中にも実行する。ホーム基地局2は、いったんプライマリセル及びセカンダリセルの周波数チャネルを決定して運用を開始した後に、現在プライマリセルに使用している周波数チャネルよりも条件の良い他の周波数チャネルを発見した場合、プライマリセル用の周波数チャネルを切り替える。ホーム基地局2は、周辺の非セカンダリセル(プライマリセル又は非HSDPAセル)と重複する周波数チャネルを自身のプライマリセルに割り当てている場合、運用中に周辺セルの監視を行う。周辺セルの監視は、現在のプライマリセルとは異なる他の周波数チャネルの測定を含む。ホーム基地局2は、周辺の非セカンダリセルに使用されていない周波数チャネル(つまり条件の良い周波数チャネル)を発見した場合に、プライマリセル用の周波数チャネルを切り替える。
発明の実施の形態1及び2で述べた周波数チャネル制御部15及び25による周波数チャネルの決定処理の少なくとも一部は、ホームGW81又はコアネットワーク83に配置された装置(例えばRNC)によって実行されてもよい。つまり、ホーム基地局1及び2が行うものとして説明したプライマリセル用の周波数チャネルの決定手順に含まれる各処理は、ホーム基地局1及び2とこれが接続される上位側の装置との間で任意に分担することが可能である。
6-1、6-2 移動局
7 周辺基地局
10 アンテナ
11 無線通信部
12 受信データ処理部
13 送信データ処理部
14 有線通信部
15、25 周波数チャネル制御部
16 移動局モード受信部
81 ホームゲートウェイ(ホームGW)
82 無線ネットワーク制御装置(RNC)
83 コアネットワーク
Claims (29)
- 移動局との間で無線通信を行う無線通信手段と、
前記無線通信手段が形成する自セルで使用される周波数チャネルを決定する周波数チャネル制御手段とを備え、
前記周波数チャネル制御手段は、
周辺の基地局によって形成される周辺のセルがプライマリセルの生成を条件として従属的に形成されるセカンダリセルであるか否かを識別し、
周辺の非セカンダリセルで使用されているのと異なる周波数チャネルを優先的に前記自セルで使用する周波数チャネルとして選択する、
基地局装置。 - 前記周波数チャネル制御手段は、周辺のセカンダリセルで使用されている周波数チャネルを前記周辺の非セカンダリセルで使用されている周波数チャネルより優先して前記自セルで使用する周波数チャネルとして選択する、請求項1に記載の基地局装置。
- 前記周波数チャネル制御手段は、前記周辺のセルからの受信信号に予め定められた物理チャネルが含まれるか否かによって、前記周辺のセルが前記セカンダリセルであるか否かを識別する、請求項1又は2に記載の基地局装置。
- 前記セカンダリセルは報知チャネルを送信しないセルであり、前記非セカンダリセルは前記報知チャネルを送信するセルであって、
前記周波数チャネル制御手段は、前記報知チャネルを送信していない周辺のセルで使用されている周波数チャネルを、前記報知チャネルを送信している周辺のセルで使用されている周波数チャネルより優先して前記自セルで使用する周波数チャネルとして選択する、請求項1~3のいずれか1項に記載の基地局装置。 - 前記周波数チャネル制御手段は、前記周辺のセルから送信される無線信号に含まれる報知情報に基づいて、前記周辺のセルが前記セカンダリセルであるか否かを識別する、請求項1又は2に記載の基地局装置。
- 前記報知情報は、移動局のセルへのアクセス制限に関するアクセス制限情報を含み、
前記周波数チャネル制御手段は、前記アクセス制限情報が無効値を示すか否かによって、前記周辺のセルが前記セカンダリセルであるか否かを識別する、請求項5に記載の基地局装置。 - 前記セカンダリセルによって送信される前記アクセス制限情報は有効値を示し、前記非セカンダリセルによって送信される前記アクセス制限情報は無効値を示し、
前記周波数チャネル制御手段は、前記有効値を示す前記アクセス制限情報を送信する周辺のセルで使用されている周波数チャネルを、前記無効値を示す前記アクセス制限情報を送信する周辺のセルで使用されている周波数チャネルより優先して前記自セルで使用する周波数チャネルとして選択する、請求項6に記載の基地局装置。 - 前記無線通信手段は、第1のセル及び前記第1のセルとは異なる周波数チャネルを用いて前記第1のセルの形成を条件として従属的に形成される第2のセルを形成し、
前記自セルは、少なくとも前記第1のセルを含む、請求項1~7のいずれか1項に記載の基地局装置。 - 前記基地局装置は、前記第1及び第2のセルで同時に高速ダウンリンクパケットアクセス(HSDPA)の提供を行うデュアルセルHSDPAオペレーション(DC-HSDPA)をサポートし、
前記第1のセルは、サービングHS-DSCHセルであり、
前記第2のセルは、セカンダリ・サービングHS-DSCHセルである、
請求項8に記載の基地局装置。 - 前記第1及び第2のセルは、互いに異なる無線通信方式を用いて形成される、請求項8又は9に記載の基地局装置。
- 前記第1及び第2のセルの各々に用いられる無線通信方式は、W-CDMA、モバイルWiMAX、およびLTE(Long Term Evolution)のいずれかである、請求項8~10のいずれか1項に記載の基地局装置。
- 前記周波数チャネル制御手段は、前記周辺のセルとして複数のセカンダリセルが存在する場合に、前記複数のセカンダリセルのうち優先度が最も低いセルで使用されている周波数チャネルを前記自セルで使用する周波数として選択する、請求項1~11のいずれか1項に記載の基地局装置。
- 基地局装置の制御方法であって、
周辺の基地局によって形成される周辺のセルがプライマリセルの生成を条件として従属的に形成されるセカンダリセルであるか否かを識別するステップ(a)と、
周辺の非セカンダリセルで使用されているのと異なる周波数チャネルを前記周辺の非セカンダリセルで使用されている周波数チャネルより優先して前記基地局装置が形成する自セルで使用される周波数チャネルとして選択するステップ(b)と、
を備える基地局装置の制御方法。 - 前記ステップ(b)では、周辺のセカンダリセルで使用されている周波数チャネルを前記周辺の非セカンダリセルで使用されている周波数チャネルより優先して前記自セルで使用する周波数チャネルとして選択する、請求項13に記載の方法。
- 前記ステップ(b)では、前記周辺のセルからの受信信号に予め定められた物理チャネルが含まれるか否かによって、前記周辺のセルが前記セカンダリセルであるか否かを識別する、請求項13又は14に記載の方法。
- 前記ステップ(b)では、前記周辺のセルから送信される無線信号に含まれる報知情報に基づいて、前記周辺のセルが前記セカンダリセルであるか否かを識別する、請求項13又は14に記載の方法。
- 前記報知情報は、移動局のセルへのアクセス制限に関するアクセス制限情報を含み、
前記ステップ(b)では、前記アクセス制限情報が無効値を示すか否かによって、前記周辺のセルが前記セカンダリセルであるか否かを識別する、請求項16に記載の方法。 - 移動局との間で無線通信を行う基地局機器用の処理装置であって、
周辺の基地局によって形成される周辺のセルがプライマリセルの生成を条件として従属的に形成されるセカンダリセルであるか否かを識別するセル属性識別手段と、
周辺の非セカンダリセルで使用されているのと異なる周波数チャネルを優先的に前記基地局機器が形成する自セルで使用する周波数チャネルとして選択するチャネル決定手段と、
を備える処理装置。 - 前記チャネル決定手段は、周辺のセカンダリセルで使用されている周波数チャネルを前記周辺の非セカンダリセルで使用されている周波数チャネルより優先して前記自セルで使用する周波数チャネルとして選択する、請求項18に記載の処理装置。
- 前記セル属性識別手段は、前記周辺のセルからの受信信号に予め定められた物理チャネルが含まれるか否かによって、前記周辺のセルが前記セカンダリセルであるか否かを識別する、請求項18又は19に記載の処理装置。
- 前記セル属性識別手段は、前記周辺のセルから送信される無線信号に含まれる報知情報に基づいて、前記周辺のセルが前記セカンダリセルであるか否かを識別する、請求項18又は19に記載の処理装置。
- 前記報知情報は、移動局のセルへのアクセス制限に関するアクセス制限情報を含み、
前記セル属性識別手段は、前記アクセス制限情報が無効値を示すか否かによって、前記周辺のセルが前記セカンダリセルであるか否かを識別する、請求項21に記載の処理装置。 - 移動局との間で無線通信を行う基地局機器に関する制御処理をコンピュータに実行させるためのプログラムが格納された記憶媒体であって、
前記制御処理は、
周辺の基地局によって形成される周辺のセルがプライマリセルの生成を条件として従属的に形成されるセカンダリセルであるか否かを識別するステップ(a)と、
周辺の非セカンダリセルで使用されているのと異なる周波数チャネルを前記周辺の非セカンダリセルで使用されている周波数チャネルより優先して前記基地局機器が形成する自セルで使用される周波数チャネルとして選択するステップ(b)と、
を含むプログラムが格納された記憶媒体。 - 前記ステップ(b)では、周辺のセカンダリセルで使用されている周波数チャネルを前記周辺の非セカンダリセルで使用されている周波数チャネルより優先して前記自セルで使用する周波数チャネルとして選択する、請求項23に記載のプログラムが格納された記憶媒体。
- 第1及び第2の基地局を備える無線通信システムであって、
前記第1の基地局は、
移動局との間で無線通信を行う無線通信手段と、
前記第2の基地局によって形成される周辺のセルがプライマリセルの生成を条件として従属的に形成されるセカンダリセルであるか否かを識別し、周辺の非セカンダリセルで使用されているのと異なる周波数チャネルを前記無線通信手段が形成する自セルで使用する周波数チャネルとして優先的に選択する周波数チャネル制御手段と、
を備える、無線通信システム。 - 前記周波数チャネル制御手段は、周辺のセカンダリセルで使用されている周波数チャネルを前記周辺の非セカンダリセルで使用されている周波数チャネルより優先して前記自セルで使用する周波数チャネルとして選択する、請求項25に記載の無線通信システム。
- 前記周波数チャネル制御手段は、前記第2の基地局からの受信信号に予め定められた物理チャネルが含まれるか否かによって、前記周辺のセルが前記セカンダリセルであるか否かを識別する、請求項25又は26に記載の無線通信システム。
- 前記第2の基地局は、報知情報を含む無線信号を送信し、
前記周波数チャネル制御手段は、前記第2の基地局から送信される無線信号に含まれる前記報知情報に基づいて、前記周辺のセルが前記セカンダリセルであるか否かを識別する、請求項25又は26に記載の無線通信システム。 - 前記報知情報は、移動局のセルへのアクセス制限に関するアクセス制限情報を含み、
前記周波数チャネル制御手段は、前記アクセス制限情報が無効値を示すか否かによって、前記周辺のセルが前記セカンダリセルであるか否かを識別する、請求項28に記載の無線通信システム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980148131.1A CN102227931B (zh) | 2008-12-03 | 2009-11-13 | 基站装置、基站装置的控制方法、处理装置、存储介质和无线电通信系统 |
US13/129,532 US8824390B2 (en) | 2008-12-03 | 2009-11-13 | Method and apparatus for determining a frequency channel for use in radio communication with a mobile terminal |
JP2010541200A JP5594146B2 (ja) | 2008-12-03 | 2009-11-13 | 基地局装置、基地局装置の制御方法、処理装置、プログラム、及び無線通信システム |
EP09830136.9A EP2355568B1 (en) | 2008-12-03 | 2009-11-13 | Base station apparatus, method for controlling base station apparatus, processor unit, storage medium, and wireless communication system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-308709 | 2008-12-03 | ||
JP2008308709 | 2008-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010064365A1 true WO2010064365A1 (ja) | 2010-06-10 |
Family
ID=42233024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/006087 WO2010064365A1 (ja) | 2008-12-03 | 2009-11-13 | 基地局装置、基地局装置の制御方法、処理装置、記憶媒体、及び無線通信システム |
Country Status (5)
Country | Link |
---|---|
US (1) | US8824390B2 (ja) |
EP (1) | EP2355568B1 (ja) |
JP (1) | JP5594146B2 (ja) |
CN (1) | CN102227931B (ja) |
WO (1) | WO2010064365A1 (ja) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013110673A (ja) * | 2011-11-24 | 2013-06-06 | Sumitomo Electric Ind Ltd | 信号を測定する方法、端末装置、及び基地局装置 |
JP2013524701A (ja) * | 2010-04-30 | 2013-06-17 | ソニー株式会社 | コンポーネントキャリアを選択する方法、基地局、端末及び通信システム |
JP2013529426A (ja) * | 2010-04-30 | 2013-07-18 | ソニー株式会社 | コンポーネントキャリアを更新する方法、基地局、端末及び通信システム |
JP2013535177A (ja) * | 2010-06-28 | 2013-09-09 | クアルコム,インコーポレイテッド | Multi−pointhsdpa通信ネットワークにおけるモビリティのためのシステムおよび方法 |
EP2695480A1 (en) * | 2011-04-01 | 2014-02-12 | Intel Corporation | Opportunistic carrier aggregation using short range extension carriers |
JP2014060510A (ja) * | 2012-09-14 | 2014-04-03 | Ntt Docomo Inc | 移動通信システム、無線基地局及び移動局 |
US8891356B2 (en) | 2010-06-28 | 2014-11-18 | Qualcomm Incorporated | System and method for multi-point HSDPA communication utilizing a multi-link RLC sublayer |
US8989004B2 (en) | 2010-11-08 | 2015-03-24 | Qualcomm Incorporated | System and method for multi-point HSDPA communication utilizing a multi-link PDCP sublayer |
US9125098B2 (en) | 2011-08-03 | 2015-09-01 | Qualcomm Incorporated | Method and apparatus for flow congestion control in multiflow networks |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102264131B (zh) * | 2010-05-29 | 2015-03-11 | 华为技术有限公司 | 无线网络中的数据传输方法和装置 |
US8737211B2 (en) | 2011-08-03 | 2014-05-27 | Qualcomm Incorporated | Methods and apparatuses for network configuration of user equipment communication modes in multiflow systems |
US9392542B2 (en) * | 2012-03-16 | 2016-07-12 | Samsung Electronics Co., Ltd. | Method and device for detecting inter-frequency cell signals in a heterogeneous network |
WO2014017869A1 (ko) * | 2012-07-27 | 2014-01-30 | 엘지전자 주식회사 | 셀 스위칭 방법 및 장치 |
WO2014157828A1 (en) * | 2013-03-29 | 2014-10-02 | Lg Electronics Inc. | Method for configuring a receiver bandwidth and device therefor |
WO2014171872A1 (en) * | 2013-04-16 | 2014-10-23 | Telefonaktiebolaget L M Ericsson (Publ) | A user equipment and a method therein for channel interference cancellation |
US9414384B2 (en) | 2013-09-17 | 2016-08-09 | Telefonaktiebolaget Lm Ericsson (Publ) | State-driven secondary cell activation and deactivation |
US10299272B2 (en) * | 2016-11-04 | 2019-05-21 | Nokia Solutions And Networks Oy | Switching carrier frequency while user equipment is in off cycle |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006054341A1 (ja) * | 2004-11-18 | 2006-05-26 | Mitsubishi Denki Kabushiki Kaisha | 移動無線基地局の無線チャネル設定方法 |
JP2007529915A (ja) * | 2003-12-19 | 2007-10-25 | アイビス・テレコム・インコーポレイテッド | タイムスロットリソース管理による基地局の干渉制御 |
JP2008308709A (ja) | 2007-06-13 | 2008-12-25 | Panasonic Corp | 半導体装置の製造方法及び製造装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5442806A (en) * | 1993-06-08 | 1995-08-15 | Oki Telecom | Preferred carrier selection method for selecting any available cellular carrier frequency when neither home nor preferred cellular carrier frequencies are available |
US6405048B1 (en) * | 1996-08-28 | 2002-06-11 | Telefonaktiebolaget L M Ericsson | Method and system for autonomously allocating frequencies to a radio system sharing frequencies with an overlapping macro radio system |
FI109956B (fi) * | 1998-12-16 | 2002-10-31 | Nokia Corp | Menetelmä lähisolujen tietojen välittämiseksi sekä menetelmän toteuttava järjestelmä ja matkaviestin |
US7424268B2 (en) * | 2002-04-22 | 2008-09-09 | Cisco Technology, Inc. | System and method for management of a shared frequency band |
US7555300B2 (en) | 2002-10-25 | 2009-06-30 | Intel Corporation | Base station interference control using timeslot resource management |
JP4278530B2 (ja) * | 2004-02-13 | 2009-06-17 | 富士通株式会社 | 符号分割多重通信システム及びその周波数割当て方法 |
US7634277B2 (en) * | 2005-04-28 | 2009-12-15 | Cisco Technology, Inc. | Method for allocating channel resources for improving frequency utilization efficiency of wireless communication systems |
DE202005021930U1 (de) * | 2005-08-01 | 2011-08-08 | Corning Cable Systems Llc | Faseroptische Auskoppelkabel und vorverbundene Baugruppen mit Toning-Teilen |
JP2008072381A (ja) * | 2006-09-13 | 2008-03-27 | Toshiba Corp | 基地局、移動体通信システム、及びチャネル割当方法 |
US8744466B2 (en) * | 2006-10-10 | 2014-06-03 | Broadcom Corporation | Sensing RF environment to manage mobile network resources |
JP4525684B2 (ja) * | 2007-01-05 | 2010-08-18 | 船井電機株式会社 | デジタル放送受信装置 |
JP2008178030A (ja) * | 2007-01-22 | 2008-07-31 | Mitsubishi Electric Corp | 周波数割当方法および基地局 |
GB0715560D0 (en) * | 2007-08-10 | 2007-09-19 | Nortel Networks Ltd | Sub banded frequency arrangement for femtocells |
US9078269B2 (en) * | 2007-09-21 | 2015-07-07 | Qualcomm Incorporated | Interference management utilizing HARQ interlaces |
JP5255125B2 (ja) * | 2008-11-25 | 2013-08-07 | インターデイジタル パテント ホールディングス インコーポレイテッド | 複数のアップリンクキャリアおよび複数のダウンリンクキャリアを利用するための方法および装置 |
-
2009
- 2009-11-13 JP JP2010541200A patent/JP5594146B2/ja not_active Expired - Fee Related
- 2009-11-13 EP EP09830136.9A patent/EP2355568B1/en not_active Not-in-force
- 2009-11-13 WO PCT/JP2009/006087 patent/WO2010064365A1/ja active Application Filing
- 2009-11-13 US US13/129,532 patent/US8824390B2/en not_active Expired - Fee Related
- 2009-11-13 CN CN200980148131.1A patent/CN102227931B/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007529915A (ja) * | 2003-12-19 | 2007-10-25 | アイビス・テレコム・インコーポレイテッド | タイムスロットリソース管理による基地局の干渉制御 |
WO2006054341A1 (ja) * | 2004-11-18 | 2006-05-26 | Mitsubishi Denki Kabushiki Kaisha | 移動無線基地局の無線チャネル設定方法 |
JP2008308709A (ja) | 2007-06-13 | 2008-12-25 | Panasonic Corp | 半導体装置の製造方法及び製造装置 |
Non-Patent Citations (7)
Title |
---|
"3G Home NodeB Study Item Technical Report", 3GPP, TR25.820 V8.2.0, September 2008 (2008-09-01) |
"Introduction of Dual-Cell HSDPA Operation on Adjacent Carriers", 3GPP, RI-084030, 25.212 CR0267R3 (REL-8, B, October 2008 (2008-10-01) |
"Introduction of Dual-Cell HSDPA Operation on Adjacent Carriers", 3GPP, RL-084029, 25.211 CR0257R3 (REL-8, B, October 2008 (2008-10-01) |
"Introduction of Dual-Cell HSDPA Operation on Adjacent Carriers", 3GPP, RL-084031, 25.214 CR0497R4 (REL-8, B, October 2008 (2008-10-01) |
"Radio Resource Control (RRC", 3GPP TS 25.331 V8,4.0, September 2008 (2008-09-01) |
"Radio Resource Control (RRC", 3GPP TS 25.331 V8.4.0, September 2008 (2008-09-01) |
See also references of EP2355568A4 |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013524701A (ja) * | 2010-04-30 | 2013-06-17 | ソニー株式会社 | コンポーネントキャリアを選択する方法、基地局、端末及び通信システム |
JP2013529426A (ja) * | 2010-04-30 | 2013-07-18 | ソニー株式会社 | コンポーネントキャリアを更新する方法、基地局、端末及び通信システム |
US8891356B2 (en) | 2010-06-28 | 2014-11-18 | Qualcomm Incorporated | System and method for multi-point HSDPA communication utilizing a multi-link RLC sublayer |
JP2013535177A (ja) * | 2010-06-28 | 2013-09-09 | クアルコム,インコーポレイテッド | Multi−pointhsdpa通信ネットワークにおけるモビリティのためのシステムおよび方法 |
EP2586246B1 (en) * | 2010-06-28 | 2018-08-29 | Qualcomm Incorporated(1/3) | Mobility in a multi-point hsdpa communication network |
US8989140B2 (en) | 2010-06-28 | 2015-03-24 | Qualcomm Incorporated | System and method for mobility in a multi-point HSDPA communication network |
US8989004B2 (en) | 2010-11-08 | 2015-03-24 | Qualcomm Incorporated | System and method for multi-point HSDPA communication utilizing a multi-link PDCP sublayer |
EP2695480A4 (en) * | 2011-04-01 | 2014-10-08 | Intel Corp | OPPORTUNISTIC CARRIER AGGREGATION USING CLOSED SUPPORT STRUCTURES |
CN103718639A (zh) * | 2011-04-01 | 2014-04-09 | 英特尔公司 | 使用短程扩展载波的机会性载波聚合 |
US9288742B2 (en) | 2011-04-01 | 2016-03-15 | Intel Corporation | Opportunistic carrier aggregation using short range extension carriers |
US9955481B2 (en) | 2011-04-01 | 2018-04-24 | Intel Corporation | Opportunistic carrier aggregation using short range extension carriers |
EP2695480A1 (en) * | 2011-04-01 | 2014-02-12 | Intel Corporation | Opportunistic carrier aggregation using short range extension carriers |
US9125098B2 (en) | 2011-08-03 | 2015-09-01 | Qualcomm Incorporated | Method and apparatus for flow congestion control in multiflow networks |
JP2013110673A (ja) * | 2011-11-24 | 2013-06-06 | Sumitomo Electric Ind Ltd | 信号を測定する方法、端末装置、及び基地局装置 |
JP2014060510A (ja) * | 2012-09-14 | 2014-04-03 | Ntt Docomo Inc | 移動通信システム、無線基地局及び移動局 |
Also Published As
Publication number | Publication date |
---|---|
US20110222502A1 (en) | 2011-09-15 |
JP5594146B2 (ja) | 2014-09-24 |
CN102227931B (zh) | 2015-03-25 |
US8824390B2 (en) | 2014-09-02 |
EP2355568A1 (en) | 2011-08-10 |
JPWO2010064365A1 (ja) | 2012-05-10 |
EP2355568A4 (en) | 2016-06-15 |
EP2355568B1 (en) | 2018-06-27 |
CN102227931A (zh) | 2011-10-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5594146B2 (ja) | 基地局装置、基地局装置の制御方法、処理装置、プログラム、及び無線通信システム | |
JP5578081B2 (ja) | 基地局装置、基地局装置の制御方法、通信システム、及びプログラム | |
JP6382864B2 (ja) | セルラ通信ネットワークにおけるノード検出 | |
US8706132B2 (en) | Radio communication system, base station, mobile station, control method of base station, control method of mobile station, and storage medium storing program | |
US8638685B2 (en) | Base station, transmission power control method for base station, processing apparatus, storage medium storing program, and communication system | |
US9918318B2 (en) | Mobile communication system and mobile communication method | |
US8880109B2 (en) | Radio communication system, high-power base station, low-power base station, and communication control method | |
WO2010078273A2 (en) | Centralized control of peer-to-peer communication | |
JP5375836B2 (ja) | 基地局装置、移動局装置、通知システム、基地局装置の制御方法、移動局装置の制御方法、及びプログラム | |
JP2019531039A (ja) | 情報伝送方法および装置 | |
JP5516410B2 (ja) | 基地局、基地局による無線リソースの決定方法、処理装置、及びプログラム | |
KR20120007997A (ko) | 소형 셀 커버리지 확장을 위한 기지국 및 단말의 간섭 제어 방법 | |
WO2010086975A1 (ja) | 無線通信方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980148131.1 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09830136 Country of ref document: EP Kind code of ref document: A1 |
|
DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 13129532 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2010541200 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009830136 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |