WO2010122839A1 - 無線通信システム、基地局装置、無線通信端末、無線通信方法 - Google Patents
無線通信システム、基地局装置、無線通信端末、無線通信方法 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
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- the present invention relates to a wireless communication system, a base station device, a wireless communication terminal, and a wireless communication method.
- H (e) NB a small wireless base station
- H (e) NB a small wireless base station
- the FSG which is a wireless communicable area constructed by H (e) NB, is assigned a CSG ID (3GPP TS25.331) of a limited subscriber group (hereinafter referred to as CSG).
- CSG a limited subscriber group
- Allowed CSG List which is a list of CSG IDs assigned to connectable femtocells, and manage connectable femtocells. (3GPP TS25.304).
- users who are not subscribed to CSG can also select a femtocell with a CSG ID that does not exist in the Allowed CSG List by manual selection of CSG ID (Manual CSG ID Selection, 3GPP TS25.304). It is possible to make a connection request from the UE.
- the UE that made the connection request has limited services that can be used at the beginning of communication, but if the connection succeeds through communication with the Core Network Node, the manually selected CSG ID is added to the Allowed CSG List. (3GPP TS25.304).
- H (e) NB when H (e) NB is installed in a place where population is dense, such as a shopping center or a live house, in the UE used by the owner who owns the H (e) NB and its related parties, the H (e) The CSG ID assigned to the femtocell constructed by the NB is included in the Allowed CSG List and is allowed to connect to that femtocell.
- the owner of the H (e) NB and the general customer's UE other than the related parties can also manually select the CSG ID even though the CSG ID of the femtocell is not included in the Allowed CSG List.
- a connection request to the femtocell may be allowed.
- Hybrid Access Mode is a mode that includes not only CSG member UEs subscribing to CSG but also Non CSG member UEs as UEs that can be connected to femtocells constructed by H (e) NB ( TS22.220 Ver9.0.0).
- H (e) NB constructs It is considered necessary to have a mechanism that prohibits manual selection of the CSG ID of the cell at the UE.
- an object of the present invention is to provide a radio communication system, a base station apparatus, a radio communication terminal, and a communication method that allow a UE to know whether or not a CSG ID of a femto cell can be manually selected.
- the wireless communication system of the present invention includes: A wireless communication system comprising a wireless communication terminal and a base station device, The base station device To the wireless communication terminal, cell information related to the cell of the base station device and selectability information indicating whether the cell information can be manually selected are transmitted, The wireless communication terminal is The cell information of the base station device and the selectability information are received from the base station device.
- the base station apparatus of the present invention A base station device that performs wireless communication with a wireless communication terminal,
- the wireless communication terminal includes a transmitter that transmits cell information related to the cell of the base station device and selectability information indicating whether the cell information can be manually selected.
- the wireless communication terminal of the present invention A wireless communication terminal that performs wireless communication with a base station device, A receiving unit configured to receive from the base station device cell information related to the cell of the base station device and selectability information indicating whether or not the cell information can be manually selected;
- the first wireless communication method of the present invention includes: A wireless communication method using a wireless communication system comprising a wireless communication terminal and a base station device, The base station device transmitting cell information regarding the cell of the base station device and selectability information indicating whether or not the cell information can be manually selected to the wireless communication terminal; The wireless communication terminal receiving from the base station device the cell information of the base station device and the selectability information.
- the second wireless communication method of the present invention includes: A communication method by a base station apparatus that performs wireless communication with a wireless communication terminal, Transmitting to the radio communication terminal cell information related to the cell of the base station apparatus and selectability information indicating whether or not the cell information can be manually selected.
- the third wireless communication method of the present invention is: A wireless communication method by a wireless communication terminal that performs wireless communication with a base station device, Receiving from the base station device cell information related to the cell of the base station device and selectability information indicating whether or not the cell information can be manually selected.
- the base station apparatus transmits to the radio communication terminal cell information related to the cell of the base station apparatus and selectability information indicating whether or not the cell information can be manually selected.
- the wireless communication terminal it is possible for the wireless communication terminal to know whether or not the cell information of the base station apparatus can be manually selected by the wireless communication terminal.
- the radio communication system includes an H (e) NB 101 that is a base station apparatus and a UE 401 that is a radio communication terminal.
- H (e) NB 101 that is a base station apparatus
- UE 401 that is a radio communication terminal.
- H (e) NB and UE only one H (e) NB and UE is shown for simplification of explanation, but the number of H (e) NB and UE is not limited to this.
- H (e) NB101 transmits to UE 401 cell information related to femtocells constructed by H (e) NB101, and selectability information indicating whether the cell information can be manually selected by UE401. 1000.
- the cell information is information that identifies a cell or indicates an attribute of a cell, and is, for example, a CSG ID.
- UE401 has the receiving part 4000 which receives the cell information and selectability information of H (e) NB101 from H (e) NB101.
- step A1 the transmission unit 1000 of the H (e) NB 101 transmits the cell information of the H (e) NB 101 and the selectability information of the cell information to the UE 401.
- the cell information and the selectability information need not be transmitted at the same time, and may be transmitted separately. This cell information and selectability information are received by the receiving unit 4000 of the UE 401.
- FIG. 3 shows a network configuration of the wireless communication system of the present embodiment.
- the radio communication system includes H (e) NBs 101 and 102 that are base station apparatuses, and UE 401 that is a radio communication terminal.
- H (e) NBs 101 and 102 that are base station apparatuses
- UE 401 that is a radio communication terminal.
- FIG. 3 for simplification of description, two H (e) NBs and one UE are illustrated, but the number of H (e) NBs and UEs is not limited thereto.
- UE exists in the area of two femtocells, you may exist in the area of 1 or 3 or more femtocells.
- the H (e) NB 101 constructs the femtocell 201 to which the CSG ID 301 that is cell information is assigned, and notifies the femtocell 201 of System Information in which the CSG ID 301 is set. At this time, the H (e) NB 101 also sets a parameter that is selectability information indicating whether or not the CSG ID 301 can be manually selected in System Information. In this specification, this parameter is set to System Information as Cell Prohibited for Manual CSG ID Selection as shown in FIG.
- the H (e) NB 102 constructs the femtocell 202 to which the CSG ID 302 that is cell information is assigned, and notifies the femtocell 202 of System Information in which the CSG ID 302 is set. At this time, the H (e) NB 102 also sets, in System Information, a parameter: Cell Prohibited for Manual CSG ID Selection, which is selectability information indicating whether or not the CSG ID 302 can be manually selected.
- UE 401 is located in both femtocells 201 and 202, can acquire System Information broadcast to both femtocells 201 and 202, and whether or not each CSG ID 301 and 302 can be manually selected. Parameters to be recognized: Recognize Cell Prohibited for Manual CSG ID Selection.
- FIG. 5 shows the detailed configuration of H (e) NB101. Note that the H (e) NB 102 has the same configuration as the H (e) NB 101.
- the H (e) NB 101 includes a transmission / reception antenna 1001, a transmission processing unit 1002, a system information setting unit 1003, a CSG ID storage memory 1004, and a load control unit 1005.
- the transmitting / receiving antenna 1001 and the transmission processing unit 1002 constitute the transmitting unit 1000 shown in FIG.
- the system information setting unit 1003, the CSG ID storage memory 1004, and the load control unit 1005 constitute a control unit.
- the CSG ID 301 assigned to the femtocell 201 constructed by the H (e) NB 101 is registered.
- the load control unit 1005 grasps the signaling processing completion rate, the transmission power utilization rate, the network resource utilization rate, and the like in the femtocell 201 constructed by the H (e) NB 101, and based on these, the H (e) NB101 Determine the load state.
- the load control unit 1005 can manually select the CSG ID 301 registered in the CSG ID storage memory 1004 by the UE located in the femtocell 201 based on the load state of the H (e) NB101. If the load is low, “Allow (Not Prohibited, Not Barred, Reserved)” means manual selection is possible. If the load is high, “Restrict (Prohibited, Barred, Not Reserved) ”is set to the parameter: Cell Prohibited for Manual CSG ID Selection.
- the System Information setting unit 1003 sets the parameters acquired from the load control unit 1005: Cell Prohibited for Manual CSG ID Selection and CSG ID 301 acquired from the CSG ID storage memory 1004 in System Information.
- the transmission processing unit 1002 broadcasts System Information acquired from the System Information setting unit 1003 to the femtocell 201 via the transmission / reception antenna 1001 by broadcast.
- FIG. 6 shows a detailed configuration of the UE 401.
- UE 401 transmits / receives antenna 4001, transmission processing unit 4002, reception processing unit 4003, cell selection processing unit 4004, Allowed CSG List storage memory 4005, neighboring cell list storage memory 4006, display Part 4007.
- the transmission / reception antenna 4001 and the reception processing unit 4003 constitute the reception unit 4000 shown in FIG.
- the cell selection processing unit 4004, the Allowed CSG List storage memory 4005, and the neighboring cell list storage memory 4006 constitute a control unit.
- the reception processing unit 4003 receives System Information broadcast to the femtocell 201 and the femtocell 202 via the transmission / reception antenna 4001 and registers it in the neighboring cell list storage memory 4006.
- the cell selection processing unit 4004 compares the CSG ID of the neighboring cell included in the neighboring cell list storage memory 4006 with the CSG ID included in the Allowed CSG List storage memory 4005, and is the CSG ID of the neighboring cell and the Allowed CSG List.
- the CSG ID included in the storage memory 4005 is set as a CSG ID manually selectable candidate.
- the cell selection processing unit 4004 recognizes the value of the CSG ID parameter of each neighboring cell included in the neighboring cell list storage memory 4006: Cell Prohibited for Manual CSG ID Selection, and is the parameter of the CSG ID of the neighboring cell: A CSG ID whose Cell Prohibited for Manual CSG ID Selection value is “Allowed” is also a CSG ID manually selectable candidate.
- the cell selection processing unit 4004 displays a list of CSG ID manually selectable candidates on the display unit 4007, and a user who uses the UE 401 selects at least one of the CSG IDs displayed as manually selectable candidates on the display unit 4007.
- One CSG ID can be manually selected.
- the cell selection processing unit 4004 determines a femto cell to which a CSG ID manually selected by the user is assigned as a connection request destination.
- the transmission processing unit 4002 generates a connection request message, and transmits the connection request message to the H (e) NB that is constructing the femtocell to which the CSG ID manually selected by the user is assigned via the transmission / reception antenna 4001. Send.
- the configuration of the wireless communication system in FIG. 3, the configuration of H (e) NB in FIG. 5, and the configuration of the UE in FIG. 6 are parameters: Cell Prohibited for Manual CSG. Except for the part related to ID Selection, all are well known to those skilled in the art related to a 3GPP-compliant wireless communication system, and since they are not directly related to the present invention, a detailed description of the configuration is omitted.
- H (e) NB101 determines the value of parameter: Cell Prohibited for Manual CSG ID Selection in step B1, and then in step B2, CSG ID 301 and parameter: Cell Prohibited for Manual CSG ID. System Information for which Selection is set is notified to the femtocell 201.
- H (e) NB102 the value of parameter: Cell Prohibited for Manual CSG ID Selection is determined in step B3, and then in step B4, CSG ID 302 and parameter: Cell Prohibited for Manual CSG ID Selection are set.
- the system information is notified to the femtocell 202.
- step B5 the UE 401 receives the CSG ID 301 and the parameter: Cell Prohibited for Manual CSG ID Selection from the femto cell 201, and receives the CSG ID 302 and the parameter: Cell Prohibited for Manual CSG ID Selection from the femto cell 202. To do.
- H (e) NBs 101 and 102 Next, the operation of the H (e) NBs 101 and 102 will be described. Here, the operation of H (e) NB101 will be described using the flowchart shown in FIG.
- step C1 the load control unit 1005 is based on the signaling processing completion rate, transmission power utilization rate, network resource utilization rate, etc. in the femtocell 201 constructed by the H (e) NB101. , H (e) NB101 load state is determined.
- the load control unit 1005 sets the value of the parameter: Cell Prohibited for Manual CSG ID Selection to [Restricted] in Step C2, and the H (e) NB101 is in a low load state. If so, in step C3, the parameter: Cell Prohibited for Manual CSG ID Selection is set to [Allow].
- a threshold value predetermined in a predetermined number or more of items such as a signaling processing completion rate, a transmission power utilization rate, and a network resource usage rate is set.
- Step C4 the System Information setting unit 1003 sets the above parameter: Cell Prohibited for Manual CSG ID Selection to System Information, and the transmission processing unit 1002 notifies the Femtocell 201 of the System Information.
- the determination of the load state of the H (e) NB 101 is carried out by the H (e) NB 101 itself, but it is not shown in an upper node (Core Network Node or H (e) NB GW). It may be carried out.
- the upper node may notify the determination result of the load state of the H (e) NB 101, and the H (e) NB 101 may set the value of the parameter based on the notified determination result.
- the upper node makes a setting request for the parameter value based on the determination result of the load state of H (e) NB101, and H (e) NB101 sets the parameter value based on the notified setting request. It may be set. Note that the upper node sets the value of the above parameter to [restricted] because the determination result indicates that the H (e) NB 101 is in a high load state or because the H (e) NB 101 is in a high load state.
- the upper node notifies the H (e) NB 101 of a message.
- H (e) NB101 may set the value of the said parameter to [restriction] by H (e) NB101 receiving the message transmitted when a high-order node itself is in a high load state.
- An example of the message is RANAP: Overload message.
- a load state such as a signaling processing completion rate, a transmission power usage rate, and a network resource usage rate is used.
- the number of UEs in service the number of UEs in communication, the number of voice calls in communication, the number of packet calls in communication, the number of HSDPA users, the number of HSUPA users, the number of MBMS users, and channelization Number of codes used, number of active radio access bearers, CPU usage rate of H (e) NB101, memory usage rate of H (e) NB101, communication completion rate, call loss rate, connection success / failure rate, handover execution frequency, handover A success / failure rate, an uplink interference amount, a downlink interference amount, an uplink buffer amount, a downlink buffer amount, or the like may be used.
- the value of the parameter is determined according to the communication status of the H (e) NB 101.
- the value of the parameter may be determined according to the current time zone. For example, “permitted” may be considered at midnight or when the owner of H (e) NB101 and its related parties are in a meeting.
- the value of the parameter may be determined according to an instruction input to the H (e) NB 101 by the operator. Furthermore, you may input said instruction
- the parameter: Cell Prohibited for Manual CSG ID Selection is an individual independent parameter, but it may be a value of a part of an existing parameter.
- step D1 the reception processing unit 4003 receives the system information of the neighboring cell to obtain the CSG ID of the neighboring cell.
- the cell selection processing unit 4004 compares the CSG ID of the neighboring cell with the CSG ID included in the Allowed CSG List storage memory 4005 in Step D2.
- the cell selection processing unit 4004 displays on the display unit 4007 that the CSG ID of the neighboring cell is included in the Allowed CSG List in Step D3.
- the CSG ID of the neighboring cell is set as a manually selectable candidate.
- the cell selection processing unit 4004 sets the parameter set in the System Information broadcast to the neighboring cell in Step D5: Cell Prohibited for Manual Recognizes the value of CSG ID Selection. If [Permitted] is set or no parameter is set, the cell selection processing unit 4004 leaves the CSG ID of the neighboring cell as a manually selectable candidate and sets [Restrict] in Step D4. In step D6, the cell selection processing unit 4004 excludes the CSG ID of the neighboring cell from the manually selectable candidates.
- step D7 the cell selection processing unit 4004 displays a list of CSG ID manually selectable candidates on the display unit 4007. Note that the CSG IDs excluded from the manually selectable candidates may be hidden or displayed as CSG IDs that cannot be selected.
- FIG. 10 shows an example of the display screen on the display unit 4007 at this time.
- a CSG ID satisfying either of the following (A) and (B) is a manually selectable candidate, and a user using the UE 401 manually selects at least one CSG ID from among the manually selectable candidates for CSG ID. It becomes possible to select.
- UE 401 The CSG ID that is not included in the Allowed CSG List and the value of the System Information parameter: Cell Prohibited for Manual CSG ID Selection for the femtocell to which the CSG ID is assigned is set to [Restricted]. You cannot manually select a CSG ID that has been set.
- CSG ID [305] is included in the Allowed CSG List of UE 401 even though the value of Femto Cell System Information parameter: Cell Prohibited for Manual CSG ID Selection is [Restricted], so CSG ID Can be manually selected.
- the owner of H (e) NB or a related party who is building a femtocell with CSG ID [305] includes CSG ID [305] in the Allowed CSG List of UE, even if CSG ID This is because, even in a situation where the [305] femtocell is crowded, it is required to allow a connection request from the UE to the CSG ID [305] femtocell.
- the value of the Femtocell System Information parameter: Cell Prohibited for Manual CSG ID Selection is set to [Allowed]. Can be manually selected CSG ID.
- CSG IDs [302, 303] are CSG IDs not included in the Allowed CSG List, and the value of the Femtocell System Information parameter: Cell Prohibited for Manual CSG ID Selection is set to [Restricted]. Therefore, it is excluded from CSG ID manually selectable candidates.
- each of the H (e) NBs 101 and 102 manually selects the CSG IDs 301 and 302 assigned to the femtocells 201 and 202 in the System Information notified to the femtocells 201 and 202.
- Parameter indicating whether or not possible Cell Prohibited for Manual CSG ID Selection value is set.
- the UE 401 can know whether or not the CSG IDs 301 and 302 can be manually selected by the user.
- the UE 401 is a CSG ID that is not included in the Allowed CSG List, and the CSG ID for the CSG ID for which the parameter: Cell Prohibited for Manual CSG ID Selection is set to [Restricted]. Excluded from manually selectable candidates.
- a specific CSG ID is simply excluded from the manually selectable candidates, so that it supports not only a connection request to a femtocell of a UE including a CSG ID in the Allowed CSG List but also CSG.
- requirement to the femtocell of the old UE which has not been performed or UE which does not contain CSG ID in Allowed CSG List can also be permitted is acquired.
- this embodiment Compared with the second embodiment of FIG. 3, this embodiment has the same network configuration of the wireless communication system, but the same CSG ID 301 is assigned to both femtocells 201 and 202, and the operation is different.
- H (e) NB101 determines the parameter: Cell Prohibited for Manual CSG ID Selection to [Restrict], and then in step E2, CSG ID 301 and parameter: Cell Prohibited. System Information with “Manual CSG ID Selection” set is notified to the femtocell 201.
- step E3 H (e) NB102 determines the parameter: Cell Prohibited for Manual CSG ID Selection to [Allow], and then in step E4, CSG ID 301 and parameter: Cell Prohibited for Manual CSG ID. System Information in which Selection is set is notified to the femtocell 202.
- step E5 the UE 401 receives the CSG ID 301 and the parameter: Cell Prohibited for Manual CSG ID Selection from the femto cell 201, and also receives the CSG ID 301 and the parameter: Cell Prohibited for Manual CSG ID Selection from the femto cell 202. To do.
- the System Information parameter of the femto cell 201 to which the CSG ID 301 is assigned Cell Prohibited for Manual CSG ID Selection is set to [Restricted], and the System of another femto cell 202 to which the same CSG ID 301 is assigned.
- Information parameter Cell Prohibited for Manual CSG ID Selection is set to [Allow].
- the UE 401 excludes the CSG ID whose parameter: Cell Prohibited for Manual CSG ID Selection is [Restricted] from the manually selectable candidates.
- both femtocells 201 and 202 set the same CSG ID 301 in System Information, as shown in FIG. 11, the parameter of one femtocell 201: Cell Prohibited for Manual CSG ID Selection Is set to [Restricted], the parameter of the other femtocell 202: Cell Prohibited for Manual CSG ID Selection may be set to [Allowed].
- the CSG ID 301 should not be excluded from the manually selectable candidates, but the CSG ID 301 can be manually selected in order to select the femtocell 202. Should be left as.
- the operation of the UE 401 is further devised.
- the operation of UE 401 will be described using the flowchart shown in FIG. 12A.
- the reception processing unit 4003 obtains the CSG ID of the neighboring cell by receiving System Information of the neighboring cell in Step F1.
- the cell selection processing unit 4004 compares the CSG ID of the neighboring cell with the CSG ID included in the Allowed CSG List storage memory 4005 in Step F2.
- the cell selection processing unit 4004 displays on the display unit 4007 that the CSG ID of the neighboring cell is included in the Allowed CSG List in Step F3. In Step F4, the CSG ID of the neighboring cell is added to the selection candidate list.
- the cell selection processing unit 4004 sets the parameter set in the System Information broadcast to the neighboring cell in Step F5: Cell Prohibited for Manual Recognizes the value of CSG ID Selection. If [Allow] is set or no value is set, the cell selection processing unit 4004 adds the CSG ID of the neighboring cell to the selection candidate list and sets [Restrict] in Step F4. If so, the cell selection processing unit 4004 adds the CSG ID of the neighboring cell to the restriction list in step F6.
- the above processing is performed for every neighboring cell.
- the cell selection processing unit 4004 extracts CSG ID manually selectable candidates from the selection candidate list and the restriction list in step F7, and then in step F8, the CSG ID is selected.
- a list of manually selectable candidates is displayed on the display unit 4007. Note that the CSG IDs excluded from the manually selectable candidates may be hidden or displayed as CSG IDs that cannot be selected.
- the cell selection processing unit 4004 acquires the CSG ID from the selection candidate list in step G1, and sets the CSG ID as a manually selectable candidate in step G2.
- step G3 the cell selection processing unit 4004 acquires the CSG ID from the restriction list, and in step G4, compares the CSG ID with the CSG ID included in the selection candidate list.
- the cell selection processing unit 4004 sets the CSG ID as a manually selectable candidate in step G2.
- the cell selection processing unit 4004 excludes the CSG ID from the manually selectable candidates in step G5.
- the UE selects a parameter: Cell Prohibited for Manual CSG ID Selection among a plurality of cells to which the CSG ID is assigned. Select a cell whose is set to [Allow].
- the parameter of any femtocell: Cell Prohibited for Manual CSG ID Selection is set to [Allowed]. Then, even if the parameter of other femtocell: Cell Prohibited for Manual CSG ID Selection is set to [Restricted], UE 401 leaves the CSG ID as a manually selectable candidate.
- a suitable cell is selected from the CSG ID selected by the manual selection procedure, a cell in which the parameter: Cell Prohibited for Manual CSG ID Selection is set to [Allowed] is selected.
- H (e) NB101,102 sets the parameter which shows whether CSG ID contained in System Information is manually selectable by UE for every access class previously allocated to UE.
- this parameter is set in System Information as Access Class Barred for Manual CSG ID Selection.
- the UE 401 recognizes the value of the parameter of the access class assigned to itself in advance, and determines whether or not to make the CSG ID a manually selectable candidate based on the value.
- the present invention is applied to a radio communication system of an IMS (IP Multimedia Subsystem) -Femto Architecture system.
- IMS IP Multimedia Subsystem
- FIG. 14 shows the configuration of the wireless communication system of the present embodiment.
- the radio communication system includes H (e) NB 100, CNGW (Core Network Gateway) 200, and UE 400.
- an object is to prohibit the selection of a CSG femtocell to which a UE has not joined by manual selection of a user who has not joined the CSG.
- H (e) NB operating in Hybrid Access Mode, that is, UEs of users who subscribe to CSG and UEs of users who do not subscribe to CSG connect to the femtocell.
- H (e) NB that makes it possible, parameters similar to the second embodiment (Cell Prohibited for non CSG UEs) and parameters similar to the fourth embodiment (Access Class Barred for non CSG UEs) The purpose is to introduce.
- the H (e) NB transmits the above parameters to the femtocell or UE, so that all or part of the UEs used by users who do not subscribe to the CSG are set to the value of the above parameters as [Restricted]. Access to femtocells can be restricted. (Seventh embodiment) In said embodiment, said parameter was set to System Information notified to a femtocell from H (e) NB.
- the above parameters are set in other messages transmitted from the H (e) NB to the UE, such as RRC Connection Setup message, Cell Update Confirm message, UTRAN Mobility Information message, and the like.
- the UE can acquire the parameters together with the message.
- the cell which UE selects by a user's manual selection is a femtocell.
- the cell which UE selects by a user's manual selection is a macro cell.
- the above parameters may be set in System Information broadcast to the macro cell.
- the wireless communication system such as femto and IMS has been described as an example.
- the present invention is not limited to these systems, and can also be applied to other wireless communication systems having wireless communication terminals and base station devices.
- the method performed by the UE 401, H (e) NB 101, 102 of the present invention may be applied to a program for causing a computer to execute.
- the program can be stored in a storage medium and can be provided to the outside via a network.
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Abstract
Description
(1)全UEのフェムトセルへの接続要求を禁止する(既存)
(2)フェムトセルのCSG IDをAllowed CSG Listに含むUEのフェムトセルへの接続要求のみを許容し、それ以外のUEの接続要求は禁止する(新規)
無線通信端末と、基地局装置と、を備える無線通信システムであって、
前記基地局装置は、
前記無線通信端末に対し、前記基地局装置のセルに関するセル情報と当該セル情報を手動選択可能かどうかを示す選択可否情報とを送信し、
前記無線通信端末は、
前記基地局装置から、前記基地局装置の前記セル情報と前記選択可否情報とを受信する。
無線通信端末と無線通信を行う基地局装置であって、
前記無線通信端末に対し、前記基地局装置のセルに関するセル情報と当該セル情報を手動選択可能かどうかを示す選択可否情報とを送信する送信部を有する。
基地局装置と無線通信を行う無線通信端末であって、
前記基地局装置から、前記基地局装置のセルに関するセル情報と当該セル情報を手動選択可能かどうかを示す選択可否情報とを受信する受信部を有する。
無線通信端末と、基地局装置と、を備える無線通信システムによる無線通信方法であって、
前記基地局装置が、前記無線通信端末に対し、前記基地局装置のセルに関するセル情報と当該セル情報を手動選択可能かどうかを示す選択可否情報とを送信するステップと、
前記無線通信端末が、前記基地局装置から、前記基地局装置の前記セル情報と前記選択可否情報とを受信するステップと、を有する。
無線通信端末と無線通信を行う基地局装置による通信方法であって、
前記無線通信端末に対し、前記基地局装置のセルに関するセル情報と当該セル情報を手動選択可能かどうかを示す選択可否情報とを送信するステップを有する。
基地局装置と無線通信を行う無線通信端末による無線通信方法であって、
前記基地局装置から、前記基地局装置のセルに関するセル情報と当該セル情報を手動選択可能かどうかを示す選択可否情報とを受信するステップを有する。
(第1の実施形態)
図1を参照すると、本実施形態の無線通信システムは、基地局装置であるH(e)NB101と、無線通信端末であるUE401と、を有している。なお、図1においては、説明の簡素化のために、H(e)NBおよびUEをそれぞれ1つだけ図示しているが、H(e)NBおよびUEの数はこれに限定されない。
(第2の実施形態)
本実施形態は、第1の実施形態の構成および動作をより具体化した例である。
(A)Allowed CSG List内に含まれるCSG IDであること
(B)System Informationのパラメータ:Cell Prohibited for Manual CSG ID Selectionの値が[許容]に設定されているCSG IDであること
言い換えれば、UE401を使用するユーザは、Allowed CSG List内に含まれないCSG IDであって、そのCSG IDが付与されているフェムトセルのSystem Informationのパラメータ:Cell Prohibited for Manual CSG ID Selectionの値が[制限]に設定されているCSG IDについては、手動選択することができない。
(第3の実施形態)
本実施形態は、図3の第2の実施形態と比較して、無線通信システムのネットワーク構成は同様であるが、両フェムトセル201,202に同じCSG ID301が付与されており、動作が異なる。
(第4の実施形態)
本実施形態においては、H(e)NB101,102が、UEに予め割り当てられたアクセスクラス毎に、System Informationに含まれるCSG IDをUEにて手動選択可能かどうかを示すパラメータを設定する。本明細書においては、このパラメータを、図13に示すように、Access Class Barred for Manual CSG ID Selectionとして、System Informationに設定するものとする。
(第5の実施形態)
本実施形態は、本発明をIMS(IP Multimedia Subsystem)-Femto Architecture方式の無線通信ステムに適用したものである。
(第6の実施形態)
上記の実施形態においては、CSGに加入していないユーザの手動選択によって、UEが加入していないCSGのフェムトセルを選択することを禁止することを目的としていた。
(第7の実施形態)
上記の実施形態においては、H(e)NBからフェムトセルに報知するSystem Informationに上記のパラメータを設定していた。
(第8の実施形態)
上記の実施形態においては、ユーザの手動選択によってUEが選択するセルがフェムトセルである。
Claims (29)
- 無線通信端末と、基地局装置と、を備える無線通信システムであって、
前記基地局装置は、
前記無線通信端末に対し、前記基地局装置のセルに関するセル情報と当該セル情報を手動選択可能かどうかを示す選択可否情報とを送信し、
前記無線通信端末は、
前記基地局装置から、前記基地局装置の前記セル情報と前記選択可否情報とを受信する、無線通信システム。 - 前記基地局装置は、
前記基地局装置の前記セル情報と前記選択可否情報とをSystem Informationに設定し、前記System Informationを前記基地局装置のセルに報知する、請求項1に記載の無線通信システム。 - 前記基地局装置は、
前記基地局装置の前記セル情報と前記選択可否情報とを所定のメッセージに設定し、前記所定のメッセージを前記無線通信端末に対して送信する、請求項1に記載の無線通信システム。 - 前記基地局装置は、
前記基地局装置の通信状況に応じて、前記基地局装置の前記セル情報を手動選択可能かどうかを決定する、請求項1から3のいずれか1項に記載の無線通信システム。 - 前記基地局装置は、
前記基地局装置に入力される指示に応じて、前記基地局装置の前記セル情報を手動選択可能かどうかを決定する、請求項1から3のいずれか1項に記載の無線通信システム。 - 前記基地局装置は、
現在の時間帯に応じて、前記基地局装置の前記セル情報を手動選択可能かどうかを決定する、請求項1から3のいずれか1項に記載の無線通信システム。 - 前記無線通信端末は、
自端末が接続可能なセルのセル情報のリストである許可リストを予め保持しており、
前記許可リストおよび前記選択可否情報に基づいて、前記基地局装置の前記セル情報を手動選択候補とするかどうかを決定する、請求項1から6のいずれか1項に記載の無線通信システム。 - 前記無線通信端末は、
近隣セルのセル情報のうち、前記許可リスト内に含まれず、かつ、前記選択可否情報が手動選択不可を示すセル情報を、手動選択候補から除外する、請求項7に記載の無線通信システム。 - 前記無線通信端末は、
近隣セルのセル情報のうち、前記許可リスト内に含まれず、かつ、前記選択可否情報が手動選択不可を示すセル情報を、制限リストに登録し、その他の近隣セルのセル情報を選択候補リストに登録し、
前記制限リスト内に含まれる近隣セルのセル情報のうち、前記選択候補リスト内に含まれないセル情報を、手動選択候補から除外する、請求項7に記載の無線通信システム。 - 前記無線通信端末は、
手動選択されたセル情報を持つセルを選択する際、
前記選択可否情報が手動選択不可を示すセル情報を持つセルを除外し、前記選択可否情報が手動選択可能を示すセル情報を持つセルまたは前記選択可否情報が設定されていないセルを選択する、請求項9に記載の無線通信システム。 - 前記無線通信端末は、
前記セル情報の手動選択候補を表示する際に、手動選択候補から除外したセル情報については、非表示とするか、または、選択できないセル情報として表示する、請求項8から10のいずれか1項に記載の無線通信システム。 - 前記基地局装置は、
前記無線通信端末のアクセスクラスごとに、前記基地局装置の前記セル情報を手動選択可能かどうかを決定し、
前記無線通信端末に対し、アクセスクラスごとの前記選択可否情報を送信し、
前記無線通信端末は、
自端末に予め割り当てられているアクセスクラスの前記選択可否情報に基づいて、前記基地局装置の前記セル情報を手動選択候補とするかどうかを決定する、請求項7から11のいずれか1項に記載の無線通信システム。 - 無線通信端末と無線通信を行う基地局装置であって、
前記無線通信端末に対し、前記基地局装置のセルに関するセル情報と当該セル情報を手動選択可能かどうかを示す選択可否情報とを送信する送信部を有する、基地局装置。 - 前記基地局装置の前記セル情報と前記選択可否情報とをSystem Informationに設定する制御部をさらに有し、
前記送信部は、前記System Informationを前記基地局装置のセルに報知する、請求項13に記載の基地局装置。 - 前記基地局装置の前記セル情報と前記選択可否情報とを所定のメッセージに設定する制御部をさらに有し、
前記送信部は、前記所定のメッセージを前記無線通信端末に対して送信する、請求項13に記載の基地局装置。 - 前記制御部は、前記基地局装置の通信状況に応じて、前記基地局装置の前記セル情報を手動選択可能かどうかを決定する、請求項14または15に記載の基地局装置。
- 前記制御部は、前記基地局装置に入力される指示に応じて、前記基地局装置の前記セル情報を手動選択可能かどうかを決定する、請求項14または15に記載の基地局装置。
- 前記制御部は、現在の時間帯に応じて、前記基地局装置の前記セル情報を手動選択可能かどうかを決定する、請求項14または15に記載の基地局装置。
- 前記制御部は、前記無線通信端末のアクセスクラスごとに、前記基地局装置の前記セル情報を手動選択可能かどうかを決定し、
前記送信部は、前記無線通信端末に対し、アクセスクラスごとの前記選択可否情報を送信する、請求項14から18のいずれか1項に記載の基地局装置。 - 基地局装置と無線通信を行う無線通信端末であって、
前記基地局装置から、前記基地局装置のセルに関するセル情報と当該セル情報を手動選択可能かどうかを示す選択可否情報とを受信する受信部を有する、無線通信端末。 - 自端末が接続可能なセルのセル情報のリストである許可リストを予め保持し、前記許可リストおよび前記選択可否情報に基づいて、前記基地局装置の前記セル情報を手動選択候補とするかどうかを決定する制御部をさらに有する、請求項20に記載の無線通信端末。
- 前記制御部は、近隣セルのセル情報のうち、前記許可リスト内に含まれず、かつ、前記選択可否情報が手動選択不可を示すセル情報を、手動選択候補から除外する、請求項21に記載の無線通信端末。
- 前記制御部は、
近隣セルのセル情報のうち、前記許可リスト内に含まれず、かつ、前記選択可否情報が手動選択不可を示すセル情報を、制限リストに登録し、その他の近隣セルのセル情報を選択候補リストに登録し、
前記制限リスト内に含まれる近隣セルのセル情報のうち、前記選択候補リスト内に含まれないセル情報を、手動選択候補から除外する、請求項21に記載の無線通信端末。 - 前記制御部は、
手動選択されたセル情報を持つセルを選択する際、
前記選択可否情報が手動選択不可を示すセル情報を持つセルを除外し、前記選択可否情報が手動選択可能を示すセル情報を持つセルまたは前記選択可否情報が設定されていないセルを選択する、請求項23に記載の無線通信端末。 - 前記制御部は、
前記セル情報の手動選択候補を表示する際に、手動選択候補から除外したセル情報については、非表示とするか、または、選択できないセル情報として表示する、請求項22から24のいずれか1項に記載の無線通信端末。 - 前記受信部は、アクセスクラスごとの前記選択可否情報を受信し、
前記制御部は、自端末に予め割り当てられているアクセスクラスの前記選択可否情報に基づいて、前記基地局装置の前記セル情報を手動選択候補とするかどうかを決定する、請求項20から25のいずれか1項に記載の無線通信端末。 - 無線通信端末と、基地局装置と、を備える無線通信システムによる無線通信方法であって、
前記基地局装置が、前記無線通信端末に対し、前記基地局装置のセルに関するセル情報と当該セル情報を手動選択可能かどうかを示す選択可否情報とを送信するステップと、
前記無線通信端末が、前記基地局装置から、前記基地局装置の前記セル情報と前記選択可否情報とを受信するステップと、を有する無線通信方法。 - 無線通信端末と無線通信を行う基地局装置による通信方法であって、
前記無線通信端末に対し、前記基地局装置のセルに関するセル情報と当該セル情報を手動選択可能かどうかを示す選択可否情報とを送信するステップを有する無線通信方法。 - 基地局装置と無線通信を行う無線通信端末による無線通信方法であって、
前記基地局装置から、前記基地局装置のセルに関するセル情報と当該セル情報を手動選択可能かどうかを示す選択可否情報とを受信するステップを有する無線通信方法。
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