WO2012035697A1 - 基地局及び通信システム - Google Patents
基地局及び通信システム Download PDFInfo
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- WO2012035697A1 WO2012035697A1 PCT/JP2011/004315 JP2011004315W WO2012035697A1 WO 2012035697 A1 WO2012035697 A1 WO 2012035697A1 JP 2011004315 W JP2011004315 W JP 2011004315W WO 2012035697 A1 WO2012035697 A1 WO 2012035697A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/12—Setup of transport tunnels
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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
- H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
Definitions
- the present invention relates to a base station that relays communication between a mobile terminal and a communication partner apparatus, and a communication system including the mobile terminal and the base station.
- MR mobile relay
- a moving relay base station relay
- various technologies for realizing mobile relay are being studied.
- the mobile relay As an example of the operation of mobile relays, it can be introduced into public transportation such as trains and buses.
- the mobile relay has the following characteristics.
- a plurality of terminals (terminal a, terminal b) connected to the mobile relay 3000 that is, terminals of passengers who get on the transportation are moving with the vehicle.
- the mobile relay 3000 collectively manages mobility control such as handover with the macro base stations (Donor NB: DeNB) 3001 and 3002 to which the mobile relay 3000 is connected.
- Donor NB DeNB
- the terminal itself does not need mobility control
- the signaling traffic of the terminal accompanying the mobility control can be reduced. That is, since the mobile relay 3000 can manage a plurality of terminals collectively, signaling traffic to the macro base station can be reduced.
- access to the outside of the vehicle is reduced by using contents and cache stored in a server provided in a vehicle such as a mobile relay or in a train where the terminal is moving together. As a result, external traffic by the terminal can be reduced.
- the mobile relay sets up a data (U-plane) bearer with the gateway (GW). This operation is the same as that of a normal 3G terminal (UE). Both the control information and user data of the terminal connected to the mobile relay are transmitted to the GW through the mobile relay data bearer.
- U-plane data
- UE normal 3G terminal
- sharing of the 3G line is realized by putting information of a plurality of operators in the notification information transmitted by the MR 3100. More specifically, a plurality of PLMN IDs that are IDs indicating operators are set. As a result, when there is a contract operator of the terminal among a plurality of PLMN IDs, the terminal determines that the terminal is the network of the operator and selects it.
- an object of the present invention is to provide a base station and a communication system that can flexibly control traffic for a plurality of communication operator terminals that share a network.
- a base station is connected to a plurality of mobile terminals and relays communication between a communication apparatus that is a communication partner of the plurality of mobile terminals and the plurality of mobile terminals.
- a base station comprising: a construction unit that constructs the content of the policy information; and a storage unit that stores the content of the policy information and the identification information for identifying the communication path corresponding to the content as storage information.
- the communication operator corresponds to, for example, a communication carrier that provides a service of a mobile communication terminal.
- the base station corresponds to MR described later.
- the said communication path means the communication path between a mobile terminal and a communication apparatus which the network side desires, for example.
- the communication path corresponds to a bearer described later.
- a plurality of mobile terminals to which different communication operators belong, and a plurality of communication devices to which the plurality of mobile terminals are connected and the communication operators that are communication partners of the plurality of mobile terminals are different from the plurality of communication devices.
- a base station that relays communication between the mobile terminal and a management device that performs mobility management of the mobile terminal establishes a communication path between the mobile terminal and the communication device Based on the policy information for selecting the gateway that is the other end of the communication path from the base station that satisfies the policy information, and manages the access to the network to which the communication device belongs, and the base A station constructs the communication path from the base station itself to the selected gateway based on the policy information, and the policy information And contents, a communication system that stores identification information identifying the communication path corresponding to the contents in the storage area as the relevant information is provided.
- the management device corresponds to MME (Mobility Management Entity) described later.
- the base station and communication system of the present invention can flexibly control traffic for a plurality of communication operator terminals that share a network.
- the conceptual diagram which shows an example of the structure in the 1st Embodiment of this invention The sequence chart which shows an example of the sequence for implement
- the conceptual diagram which shows another example of the structure in the 1st Embodiment of this invention The block diagram which shows an example of a structure of MR which concerns on the 1st, 3rd to 6th embodiment of this invention
- the conceptual diagram which shows an example of the structure in the 2nd Embodiment of this invention
- movement in the 3rd Embodiment of this invention The figure which shows an example
- the figure which shows an example of the correspondence information in the 4th to 6th embodiment of this invention The sequence chart which shows an example of the sequence of the bearer setting process by MR which concerns on the 4th Embodiment of this invention
- the sequence chart which shows an example of the data distribution sequence by MR which concerns on the 4th Embodiment of this invention The figure which shows an example of the flow of the terminal data in a communication network in the case of the policy information (2) in the 4th-6th embodiment of this invention.
- compatible information in the 4th to 6th embodiment of this invention The figure which shows an example of the flow of the terminal data in the communication network in the case of the policy information (3) in the 4th-6th embodiment of this invention.
- compatible information in the 4th to 6th embodiment of this invention The figure for demonstrating the subject in demonstrating the authentication method of the terminal connected to MR which concerns on the 5th Embodiment of this invention
- the sequence chart which shows an example of the authentication sequence of the terminal connected to MR which concerns on the 6th Embodiment of this invention The conceptual diagram which shows an example of the structure in the 7th Embodiment of this invention
- the block diagram which shows an example of the structure of MR which concerns on the 8th Embodiment of this invention
- the conceptual diagram which shows an example of a structure which separately divided the PDN connection in the 8th Embodiment of this invention Diagram for explaining a conventional mobile relay Diagram for explaining network sharing using a conventional mobile relay
- the point in the first embodiment is that the mobile relay (MR) sets the bearers between MR and GW in advance based on the policy information provided by the core network side (MME). This is to realize the priority control of the terminal. At this time, the MME selects a GW for setting a bearer based on the policy information. Examples of policy information include QoS information such as delay and throughput, and information such as priority.
- FIG. 1 is a conceptual diagram showing the configuration of the first embodiment.
- priority control for terminal traffic that is not HPLMN (Home Public Land Mobile Mobile Network).
- HPLMN Home Public Land Mobile Mobile Network
- Examples of priority control include providing only shared server content, enabling use only when available, and the like.
- the operator 2 (OP2) terminal 102 shares resources in the form of network sharing under the MR 100, but the architecture has a configuration like roaming.
- the DeNB, SGW (Serving Gateway), and MME are those of Operator 1 (OP1), and the OP1 SGW connects to the OP2 PGW (Packet Data Network Gateway) using the S8 interface. It has become.
- the terminal 101 of OP1 connects to the PGW of OP1 from the SGW of OP1 as usual.
- the bearer is controlled so that the same QoS service is assigned to one bearer and the different QoS services are assigned to different bearers.
- FIG. 1 the operator 2 terminal 102 shares resources in the form of network sharing under the MR 100, but the architecture has a configuration like roaming.
- the DeNB, SGW (Serving Gateway), and MME are those of Operator 1 (OP1)
- the OP1 SGW connects to the OP2 PGW (Packet Data Network Gateway) using the S8 interface. It has become.
- the OP1 terminal 101 and the OP2 terminal 102 each provide the same QoS service.
- the delay is within 200 ms.
- bearers with the same QoS are set as two bearers (bearer 1 and bearer 2), and separate bearers are set up, and information from OP1 Transmits and receives information from bearer 1 and OP2 using bearer 2.
- the OP1 DeNB 103 can manage the traffic of the OP1 terminal 101 and the traffic of the OP2 terminal 102 separately. A procedure for realizing this operation is shown in FIG.
- the first feature in the procedure shown in FIG. 2 is step S201, step S202, and step S203 related to the bearer setting of the MR 100.
- the MME determines that the MR 100 is an MR that accommodates the OP1 terminal (OP1 UE) 101 and the OP2 terminal (OP2 UE) 102, and the MME determines to divide the OP1 bearer and the OP2 bearer.
- the DeNB 103 is set.
- the DeNB 103 performs the setting corresponding to the MR in step S203. In this setting, information indicating to which operator each bearer belongs may be indicated.
- step S204 it is determined in step S204 to set up a bearer for OP1.
- the MR 100 is notified in step S205 that the bearer for OP1 is set.
- the setting is performed on the OP1 terminal 101 in step S206.
- FIG. 2 shows only the case where the OP1 terminal 101 is connected, when the OP2 terminal 102 is connected, only the OP2 bearer is set, and other operations are not changed.
- This operation makes it possible for the bearer to carry out priority control between operators between the MR and the DeNB.
- the DeNB cannot grasp which terminal information is being transmitted / received.
- priority control that was conventionally possible for each terminal cannot be performed.
- the operator of the terminal is checked in MR 100, and service request is transmitted.
- the service request of the OP1 terminal 101 can be a bearer for OP1
- the service request of the OP2 terminal 102 can be a bearer for OP2.
- the operation is such that the PGW / SGW / MME 300 of OP1 and the PGW / SGW / MME 301 of OP2 are separated from OP1 DeNB103. Even in such a case, the operation of the first embodiment is effective.
- OP1 DeNB103 cannot know which terminal information is actually flowing through the bearer, but since the operators are divided in units of bearers, all the information of bearer 1 is directed to PGW / SGW / MME300 of OP1. All the information of the bearer 2 can be processed in the form of the PGW / SGW / MME 301 of OP2.
- priority control can be applied independently for each of the bearer 1 and the bearer 2 in the same manner as in FIG.
- ac-BarringInfo included in System Information Block Type 2 that is currently sent as broadcast information is an operator with high priority in network sharing, that is, System Information that is a message of broadcast information. This is applied only to the first operator of the PLMN-IdentityList included in Block Type1, and access control / access restriction is performed on the second and subsequent operators of the PLMN-IdentityList using the newly set parameters.
- traffic can be distributed flexibly according to the priority of traffic to a plurality of operator terminals that are network-shared.
- MR includes a terminal (UE) side transmission / reception unit 400, a base station (DeNB) side transmission / reception unit 401, a control unit 402, and a storage unit 403.
- the terminal side transmission / reception part 400 bears transmission / reception of the data exchanged between UE, and is corresponded to UE side I / F shown in FIG.
- the base station side IF 401 is responsible for transmission and reception of data exchanged with the DeNB (network) side, and corresponds to the OP1 side I / F shown in FIG.
- the control unit 402 performs setting of the policy information, construction (establishment) of bearers, selection of bearers at the time of data distribution, and the like, and corresponds to the construction unit and selection unit described above.
- the storage unit 403 stores information necessary for fulfilling the MR function, such as storing correspondence information in which the above-described policy and bearer type are associated after bearer establishment.
- the base station (DeNB) side transmission / reception unit 1 (601) and the base station (DeNB) side transmission / reception unit 2 (602) are units that perform transmission / reception with the base station (DeNB) side. / F, equivalent to the OP2 side I / F. That is, transmission / reception with OP1 DeNB 503 and OP2 DeNB 504 in FIG. 5 is performed.
- signals for measuring the reception quality are sent to the quality measurement unit 1 (603) and the quality measurement unit 2 (604), respectively.
- the received setting information related to the communication between the MR and the terminal is sent to the channel setting unit 1 (605) and the channel setting unit 2 (606), respectively.
- the quality measuring units 1 and 2 measure the quality of the received signal, and if the quality exceeds the value set by the channel setting unit 1 (605) and the channel setting unit 2 (606), the MR A function of notifying the control unit 607 is held.
- the channel setting units 1 and 2 perform processing related to channel control based on the received control information.
- the function of notifying the quality measurement unit 1 (603) and the quality measurement unit 2 (604) of information related to the reception quality check on the base station side, and the MR communication with the terminal to the MR control unit 607 It has a function to make settings for use with.
- the MR control unit 607 has a function of determining a control operation as an MR according to settings from the channel setting unit 1 (605) and the channel setting unit 2 (606).
- the terminal (UE) side transmission / reception unit 609 performs transmission / reception according to the operation of the MR control unit 607, and corresponds to the UE side I / F illustrated in FIG.
- FIG. 4 shows a combination of quality measuring unit 1 (603), quality measuring unit 2 (604), channel setting unit 1 (605), channel setting unit 2 (606), and MR control unit 607. It corresponds to the control unit 402.
- MR 500 connects OP1 UE 501 and OP2 UE 502, and also determines resource allocation between OP1 ⁇ ⁇ UE 501 and OP2 UE 502.
- step S701 MR 500 connects OP1 UE 501 and OP2 UE 502, and also determines resource allocation between OP1 ⁇ ⁇ UE 501 and OP2 UE 502.
- Only one terminal is shown for the operator, but when there are a plurality of terminals, the total ratio is determined.
- This process is performed by the flow of the base station side transmission unit 1 (601)-> channel setting unit 1 (605)-> MR control unit 607 and the base station side transmission unit 1 (601)-> channel setting unit 1 ( 605)-> realized by the flow of the MR control unit 607.
- thresholds for the quality measurement result are also set in the quality measurement unit 1 (603) and the quality measurement unit 2 (604), respectively. Also, here, as an example, it is assumed that the ratio of resource allocation between OP1 UE 501 and OP2 UE 502 is 3: 2.
- step S702 the MR 500 performs measurement of each of the OP1 DeNB 503 and the OP2 DeNB 504. This is performed in the flow of the base station side transmission / reception unit 1 (601)-> quality measurement unit 1 (603) and the base station side transmission / reception unit 2 (602)-> quality measurement unit 2 (604), respectively.
- step S703 when the quality of OP1 DeNB 503 falls below the threshold set in step S701, the quality measurement unit 1 (603) notifies the MR control unit 607 of the notification.
- step S704 since the MR control unit 607 determines to reduce the resource allocation for the OP1 UE 501, as a result, the allocation is 1: 1 here.
- the quality measurement unit 1 detects that the quality of the OP1 DeNB 503 has improved (exceeded the threshold), and the MR control unit 607 returns the resource allocation to the normal operation based on the notification. And By such an operation, the resource allocation in the MR can be changed based on the communication quality with the base station side, so that the resource allocation under the MR can be performed efficiently.
- the access control / access restriction operation described in the first embodiment is also applicable to the second embodiment.
- the second embodiment includes a plurality of wireless connection interfaces connected to the network of the communication operator and a quality measurement unit that measures the communication quality of the plurality of wireless connection interfaces, and a construction unit (MR control unit 607).
- MR control unit 607 a construction unit
- the point in the third embodiment is that access to services provided by MR, such as a server that provides distribution of contents and data cache service installed in MR, is distinguished from access that requires resources between MR and DeNB. By doing so, priority control is performed.
- An example at this time is shown in FIG.
- bearers related to exchanges with the server in MR 800 are set for OP1 terminal 801 and OP2 terminal 802, respectively. Thereby, it is possible to reduce resources between the MR 800 and the OP1 DeNB 803 by preferentially accessing the server in the MR 800.
- FIG. 9 is a procedure showing the operation, which is described based on FIG. The difference from FIG. 2 is that the connection operation of the OP2 terminal (OP2 UE) 802 is described and the intra-MR server bearer that is the feature of the third embodiment is set and used. .
- the MME determines this intra-MR server bearer setting.
- a bearer for an intra-MR server is set from the MME to the MR 800.
- the MR 800 sets an intra-MR server bearer for the terminal in step S903.
- the communication with the intra-MR server from step S904 uses the intra-MR server bearer, and the communication connected to the DeNB 803 uses the OP2 bearer.
- the DeNB 803 performs control so as not to perform communication using the OP2 bearer.
- the intra-MR server bearer and the OP2 bearer are set separately in the communication between the MR 800 and the terminal, and the intra-MR server bearer is set to a higher priority, so that it is directed to the intra-MR server. It becomes possible to control that only traffic is sent from the terminal to the MR 800.
- FIG. 9 shows an example in which the determination is made by the MME
- the determination can be made by the MR.
- the operation in step S901 is performed in the MR 800, and in step S902, the intra-MR server bearer is not set.
- the operation of the third embodiment can be applied not only when network sharing is being performed but also when network sharing is not being performed.
- the access control / access restriction operation described in the first embodiment is also applicable to the third embodiment. Specifically, it is conceivable to set an additional parameter so that permission can be given when the terminal accesses content in the MR.
- the construction unit has a function of constructing a communication path for internal access between the mobile terminal and the base station, and the access from the mobile terminal to the service provided by the base station is as follows: Communication is performed using a communication path for internal access.
- the point in the fourth embodiment is that the mobile relay sets the bearers between MR and GW in advance based on the policy information provided by the core network side (MME). At this time, the MME selects a GW for setting a bearer based on the policy information. Examples of policy information include information such as delay and throughput. Whether or not to SIPTO may be determined based on the policy information.
- SIPTO is an abbreviation for Selected IP Traffic Offload, and is a function that offloads a large amount of traffic from a terminal to another network. The following (1) to (3) can be considered as examples of the necessity of SIPTO.
- the MR holds policy information (for example, necessity of SIPTO) and a bearer type in association with each other.
- policy information for example, necessity of SIPTO
- a bearer type for example, necessity of SIPTO
- the MR 1000 uses the OP terminal (UE) 1001 based on the policy information as shown in FIG. , 1002 is distributed to each bearer.
- FIG. 12 shows a bearer setting processing sequence by MR 1000
- FIG. 13 shows a sequence in which MR 1000 distributes data when terminals 1001 and 1002 connect to MR 1000.
- OP1 the traffic of the operator 1
- OP2 the traffic of the operator 2
- MR 1000 sets policy information based on policy information received from the network side (DeNB 1003) (step S1201). Thereafter, the MR 1000 transmits policy information to the MME 1008 (step S1202), and the MME 1008 selects a GW based on the received policy information (step S1203).
- the MME 1008 accesses an HSS (Home Subscriber Server) 1009, which is an authentication server, and performs authentication processing (step S1204).
- HSS Home Subscriber Server
- the MR 1000 establishes a SIPTO-free bearer with the selected GW1 1004 (step S1205).
- the MR 1000 holds related information (corresponding correspondence information) that associates the necessity of SIPTO and the type of bearer in a predetermined storage area (step S1206).
- the above description is a bearer establishment sequence when SIPTO is not required.
- the MME 1008 selects a GW (step S1207), an authentication process is performed (step S1208), and when the authentication process is completed, the MR 1000 selects the selected GW2 1005.
- a bearer with SIPTO is established between the two (step S1209).
- the MR 1000 holds correspondence information that associates the necessity of SIPTO and the bearer type in a predetermined storage area (step S1210).
- MR 1000 receives a connection establishment request message (Connection) setup) from the UEs 1001 and 1002 (Steps S1301 and S1302).
- a bearer to which data from 1002 is distributed is selected (step S1303).
- MR 1000 holds information on the UE once connected, and data from the corresponding UE thereafter is transmitted based on the held information (steps S1304 and S1305).
- the UE side I / F terminal side transmission / reception unit shown in FIG. 10 receives data from the UE, and the control unit 402 as shown in FIG. 4 is received based on the stored correspondence information.
- a communication path (bearer) for transmitting the received data is selected, and the data is transmitted to the selected bearer.
- the policy information (example of necessity of SIPTO) (1) has been described as the policy.
- policy information (2) and policy information (3) The flow of terminal data in each case is shown in FIGS.
- the correspondence information in the case of policy information (2) is shown in FIG. 15, and the correspondence information in the case of policy information (3) is shown in FIG.
- the correspondence information is associated with “QoS” and “bearer type”.
- the number of bearers may be changed according to the policy information.
- the number of bearers of OP1 of the main network operator can be set larger than the number of bearers of OP2.
- ⁇ Fifth embodiment> attention is focused on an authentication method for a terminal connected to a mobile relay.
- authentication for a terminal connected to a macro base station is performed by accessing the HSS that is an authentication server directly from the macro base station via the MME.
- the mobile relay sets a bearer between MR and GW as described above, and control information of a terminal connected to the MR is transmitted to the GW through this bearer.
- the authentication information of the terminal must be routed through GWs (GW1 and GW2), so that the load between MME and GW is large.
- a GW having an MME function that is, an interface function with an HSS including an authentication process and other network operators.
- the MME selects a GW having the MME function based on the policy information acquired from the MR, and a bearer is established. Specifically, when the MME (management apparatus) selects a GW, the GW that holds the function of the MME is selected, and a bearer is established. Authentication confirmation is performed directly from the GW to the HSS without going through the MME.
- FIG. 19 shows an authentication sequence of the terminal connected to the MR in that case.
- the MME when the MME selects a GW, the GW that performs authentication via the MME may be selected according to the priority of traffic.
- the MME management device
- the MME may select a GW according to the priority of communication traffic. That is, the traffic set by the bearer using the GW1 2000 having the MME function is a high priority traffic, for example, a main operator terminal traffic.
- the traffic for setting a bearer using GW2 2001 having no MME function is low priority traffic, for example, traffic of a terminal other than the main operator.
- the terminal authentication sequence in this case is shown in FIG. According to the fifth embodiment, the authentication process of the terminal connected to the MR is simplified, and the signaling load necessary for authentication is reduced.
- the MME selects a GW having the MME function and secures a plurality of bearers in the MR bearer setting in the second embodiment
- the bearer and the MME via the MME are used in the authentication process. It is important to provide a bearer that does not pass through.
- the selected GW performs authentication processing of the UE to be connected through the MME according to the priority of communication traffic.
- the traffic using the bearer that performs authentication not via the MME is high-priority traffic, for example, main terminal traffic.
- FIG. 21 shows an authentication sequence of the terminal according to the sixth embodiment.
- authentication processing in one bearer authentication processing for the UE 2101 connection establishment request message
- authentication processing in the other bearer authentication processing for the UE 2102 connection establishment request message
- FIG. 22 is a conceptual diagram showing the configuration of the seventh embodiment.
- FIG. 22 is based on FIG. 1 and is described below only with respect to the differences.
- MR 2200 has a CSG function.
- the CSG function allows access only to terminals belonging to a predetermined group such as terminals with special access rights called CSG (here called CSG members), and other terminals (here non-CSG) Access is not permitted for members). Note that it is possible not to completely permit access to a non-CSG member but to permit access but give priority to the CSG member.
- a cell having such a function is called “hybrid” in 3GPP because it has both a CSG function and normal access (open access). In the present invention, it is assumed that the MR2200 has this hybrid function.
- the OP1 terminal (CSG member) 2201 in FIG. 22 is a CSG member for this MR 2200 and the OP1 terminal (non-CSG member) 2200 is a non-CSG member for this MR 2200, the MR 2200 Accept access.
- priority is given to the OP terminal 2201, which is a CSG member.
- the processing performed between operators is performed on the CSG member and the non-CSG member.
- each data of the CSG member and the non-CSG member is divided by the bearer stretched between the MR 2200 and the DeNB 2203, and the traffic for the CSG member is exchanged using the bearer 1, and the traffic for the non-CSG member Are exchanged using the bearer 2.
- the DeNB 2203 can transmit and receive the bearer 1 preferentially.
- Operation 1 Only the main operator (corresponding to Primary PLMN) implements CSG function OP1 network: CSG member and non-CSG member OP2 network: Non-CSG member only High priority bearer: Assigned to CSG member of OP1 network Medium priority bearer: OP1 network Low-priority bearer: Assigned to OP2 network Note that medium-priority bearer and low-priority bearer may be combined Operation 2: CSG function is implemented only by the main operator OP1 network: No CSG processing OP2 network: CSG Only members accepted (not Hybrid) High-priority bearer: OP1 network Medium-priority bearer: CSG member of OP2 network Low-priority bearer: Not applicable Operation 3: CSG function implemented by all operators OP1 network: With CSG processing OP2 network: With CSG processing High-priority bearer: OP1 network CSG member Medium
- FIG. FIG. 23 is based on FIG. 2 and differs from FIG. 2 in that it is separated from the bearer for OP1 and the bearer for OP2, whereas in FIG. 23 it is separated from the bearer for CSG members and the bearer for non-CSG members. It is a point.
- step S2301 it is determined that the MME is an MR accommodating a CSG member and a non-CSG member, and the MME determines to divide the bearer for the CSG member and the bearer for the non-CSG member.
- step S2302 the DeNB 2203 is set.
- the DeNB 2203 performs corresponding settings for the MR 2200 in step S2303. In this setting, information indicating to which member each bearer belongs may be indicated.
- step S2304 it is determined in step S2304 to set up a bearer for the CSG member.
- MR 2200 is notified in step S2305 that the CSG member bearer is set.
- step S2306 the setting is performed on the OP1 terminal 2201 in step S2306.
- FIG. 23 shows only the case where the OP1 terminal 2201 is connected. However, when the OP1 terminal 2202 is connected, only the non-CSG member bearer is set, and other operations are not changed.
- the seventh embodiment for simplification, an example in which only one bearer is set is shown, but a plurality of bearers can be set. Specifically, fine QoS control can be performed by setting four bearers for CSG member terminals, and coarse QoS control can be performed by setting only two bearers for CSG member terminals. Is possible.
- the MR is composed of a terminal (UE) side transmission / reception unit 2400, a base station (DeNB) side transmission / reception unit 2401, a control unit 2402, a storage unit 2403, and a group access management unit 2404.
- the group access management unit 2404 which is a characteristic part of the MR configuration according to the seventh embodiment, holds information on the access right of a predetermined group of the terminal, and whether or not the terminal can access the base station based on the access right Is to manage.
- the MR further includes a group access management unit that holds information on the access right of the predetermined group of the mobile terminal and manages whether or not the mobile terminal can access the base station based on the access right. Constructs a communication path using the information on the access right of the group access management unit as policy information.
- the group access management unit 2404 corresponds to the CSG management unit in FIG.
- MR provides a cell to each of operator 1, operator 2, and operator 3. More specifically, the terminal that selects the operator 1 under the MR is supported between the MR and the DeNB at the frequency owned by the operator 1, and the operator 2 under the MR is supported at the frequency owned by the operator 2. The selected terminal is supported, and the operator 3 is the same as the operator 2.
- FIG. 26 is a conceptual diagram of the configuration of the MR in the eighth embodiment, and only differences from FIG. 1 will be described below.
- MR 2600 is a terminal (2602) that has selected a frequency owned by another operator in addition to the UE-side I / F that is responsible for transmission and reception of data exchanged with UE (2601) belonging to a cell provided by MR 2600.
- the MR 2600 identifies which operator belongs to the terminal by the UE side I / F and the cell management unit. Thereby, MR2600 sets the bearer between MR and DeNB for every operator similarly to 1st Embodiment, It becomes possible for DeNB to control data amount for every operator.
- step S2701 is different from step S201 and is not shared by network sharing. That is, in step S2701, the MME determines that the MR 2600 is an MR that provides services to the OP1 terminal (OP1 UE) 2601 and the OP2 terminal (OP2 UE) 2602, and the MME uses the OP1 bearer and the OP2 Decide to split bearers.
- the MME determines that the MR 2600 is an MR that provides services to the OP1 terminal (OP1 UE) 2601 and the OP2 terminal (OP2 UE) 2602, and the MME uses the OP1 bearer and the OP2 Decide to split bearers.
- the MR is composed of a terminal (UE) side transmission / reception unit 2800, a base station (DeNB) side transmission / reception unit 2801, a control unit 2802, a storage unit 2803, and a cell management unit 2804.
- the cell management unit 2804 which is a characteristic part of the MR configuration according to the eighth embodiment, provides a terminal with a plurality of different cells for each operator. That is, the MR further includes a cell management unit that provides a plurality of cells different for each operator to the mobile terminal, and the MR construction unit uses the information related to the cell connected to the mobile terminal acquired from the cell management unit as policy information. Build a communication path.
- connection between the packet gateway and the terminal called PDN (packet data network) connection is not limited to the bearer as a difference between operators. This concept is shown in FIG. As described above, by using a plurality of PDNs and using a different PDN for each operator, processing according to the state of each PDN is also possible. Specifically, it reflects the congestion of each PDN.
- FIG. 25 it is possible to provide support for a terminal contracted with the operator 2 by providing a wireless LAN function as an operator 2 instead of a cellular base station such as Mobile femto / pico.
- the operator 1 can use not only the cellular frequency but also the ISM band used by the wireless LAN by separating the terminal that communicates with the cellular terminal and the terminal that is accessed by the wireless LAN. Can be accommodated.
- interference when cellular is used, interference can be controlled compared to when wireless LAN is used, and moreover, control such as QoS can be realized in detail. For this reason, an operation of controlling a bearer for a terminal connected using a cellular function in a form more considering QoS can be considered.
- Each functional block used in the description of each embodiment of the present invention is typically realized as an LSI (Large Scale Integration) that is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them.
- LSI Large Scale Integration
- IC Integrated Circuit
- system LSI super LSI
- ultra LSI depending on the degree of integration.
- the method of circuit integration is not limited to LSI's, and implementation using dedicated circuitry or general purpose processors is also possible.
- An FPGA Field Programmable Gate Array
- a reconfigurable processor that can reconfigure the connection and setting of circuit cells inside the LSI may be used.
- integrated circuit technology comes out to replace LSI's as a result of the advancement of semiconductor technology or a derivative other technology, it is naturally also possible to carry out function block integration using this technology. For example, biotechnology can be applied.
- the base station and the communication system of the present invention can flexibly distribute traffic to a plurality of communication operator terminals that share a network, the communication between the mobile terminal and the communication counterpart device of the mobile terminal is relayed. This is useful for a base station that performs communication and a communication system that includes a mobile terminal and a base station.
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Abstract
Description
第1の実施の形態でのポイントは、モバイルリレー(MR)がコアネットワーク側(MME)が提供するポリシー情報に基づいて、MR-GW間のベアラをあらかじめ分けて設定し、それによりMR配下の端末の優先制御を実現することである。このとき、MMEはポリシー情報に基づいてベアラを設定するGWを選択する。ポリシー情報の例としては、遅延、スループット等のQoS情報や、優先度等の情報が考えられる。第1の実施の形態の構成を示す概念図を図1に示す。
第2の実施の形態は、MRがDeNBに対して複数のインタフェースを持ち、複数のオペレータに接続出来る場合の動作を示す。このときの例を図5に示す。図5に示すように、この場合はMR500の配下のみをネットワークシェアリングし、MR500がOP1のDeNB503、OP2のDeNB504とそれぞれと接続するインタフェースを持つような形態となる。この際には、第1の実施の形態とは異なり、DeNBとMR500の間の優先制御をオペレータ間で実施する必要はない。MR500配下の端末のオペレータ選択情報をみて、MR500はどのベアラを使用するのかによりオペレータを選択するのではなく、どのDeNBと通信するかによりオペレータを選択する。しかしながら、この場合には第1の実施の形態と異なり、オペレータにより通信品質が異なるという課題が発生する。これは、OP1 DeNB503とOP2 DeNB504が異なる場所に設置されているため、電波の伝搬状況が異なるためである。
第3の実施の形態でのポイントは、MRに搭載したコンテンツの配信やデータキャッシュサービスなどを提供するサーバ等、MRが提供するサービスに対するアクセスをMRとDeNB間のリソースを必要とするアクセスと区別することで優先制御を実施することである。このときの例を図8に示す。ここでは、OP1端末801、OP2端末802それぞれに対してMR800内のサーバとのやり取りに関するベアラを設定する。これにより、MR800内のサーバに対するアクセスを優先的に行うことで、MR800とOP1 DeNB803間のリソースを削減することが可能となる。
第4の実施の形態でのポイントは、モバイルリレーがコアネットワーク側(MME)が提供するポリシー情報に基づいて、MR-GW間のベアラをあらかじめ分けて設定することである。このとき、MMEはポリシー情報に基づいてベアラを設定するGWを選択する。ポリシー情報の例としては、遅延、スループット等の情報が考えられる。これらのポリシー情報に基づいてSIPTOするかどうかを判断してもよい。SIPTOとはSelected IP Traffic Offloadの略で、端末からの大量のトラフィックを別のネットワークにトラフィックオフロードする機能である。SIPTOの要否の例としては以下の(1)から(3)が考えられる。
第5の実施の形態では、モバイルリレーに接続する端末の認証方法に着目する。通常、マクロ基地局に接続する端末に対する認証は、マクロ基地局から直接MMEを経由して認証用サーバであるHSSにアクセスして認証確認を行う。一方、モバイルリレーは先に述べたようにMR-GW間でベアラを設定し、MRに接続する端末の制御情報はこのベアラを通してGWに送信される。そのため、端末の認証情報は、図18に示すように、必ずGW(GW1、GW2)を経由させる必要があるため、MME-GW間の負荷が大きい。
第6の実施の形態では、第2の実施の形態においてMRのベアラ設定時にMMEがMME機能を持つGWを選択して複数のベアラを確保する際に、認証処理でMMEを介すベアラとMMEを介さないベアラを設けることがポイントである。具体的には、選択されたGWは、通信のトラフィックの優先度に応じて、接続するUEの認証処理をMMEを介して行う。MMEを介さない認証を行うベアラを利用するトラフィックは優先度の高いトラフィック、例えばメインオペレータの端末のトラフィックである。
第7の実施の形態では、第1~6の実施の形態と異なりClosed Subscriber Group(CSG)の機能を用いてMRにアクセスする端末を制御することを実現する。第7の実施の形態の構成を示す概念図を図22に示す。図22は、図1を元にしており異なる点に関してのみ下記に記載する。
運用1: メインのオペレータ(Primary PLMNに該当)のみCSG機能を実施
OP1ネットワーク: CSGメンバーとノンCSGメンバー
OP2ネットワーク: ノンCSGメンバーのみ
高優先ベアラ: OP1ネットワークのCSGメンバーに割り当て
中優先ベアラ: OP1ネットワークのノンCSGメンバーに割り当て
低優先ベアラ: OP2ネットワークに割り当て
なお、中優先ベアラと低優先ベアラをまとめてもよい
運用2: メインのオペレータ以外のみCSG機能を実施
OP1ネットワーク: CSG処理なし
OP2ネットワーク: CSGメンバーのみ受け入れ(Hybridではない)
高優先ベアラ: OP1ネットワーク
中優先ベアラ: OP2ネットワークのCSGメンバー
低優先ベアラ: 該当なし
運用3: すべてのオペレータでCSG機能を実施
OP1ネットワーク: CSG処理あり
OP2ネットワーク: CSG処理あり
高優先ベアラ: OP1ネットワークのCSGメンバー
中優先ベアラ1: OP1ネットワークのノンCSGメンバー
中優先ベアラ2: OP2ネットワークのCSGメンバー
低優先ベアラ: OP2ネットワークのノンCSGメンバー
第8の実施の形態では、図1の実施の形態と異なり、ネットワークシェアリングを用いるのではなく、図25に示すように端末に対してオペレータ毎にそれぞれの周波数でサービスを提供する場合を示す。
Claims (12)
- 複数の移動端末が接続し、前記複数の移動端末の通信相手である通信装置と前記複数の移動端末との間の通信を中継する基地局であって、
前記移動端末と前記通信装置との間の通信経路を構築するためのポリシー情報に基づいて、前記基地局自身から前記通信装置が属するネットワークへのアクセスを管理するゲートウェイまでの通信経路を構築する構築部と、
前記ポリシー情報の内容と、その内容に対応する前記通信経路を識別する識別情報とを関連情報として記憶領域に格納する格納部とを、
備える基地局。 - 前記移動端末からデータパケットを受信する受信部と、
格納された前記関連情報に基づいて、受信された前記データパケットを送信すべき前記通信経路を選択する選択部とを更に備える請求項1に記載の基地局。 - 前記移動端末は異なる通信オペレータに属し、前記通信装置は前記通信オペレータが異なる複数の通信装置である請求項1又は2に記載の基地局。
- 前記通信オペレータのネットワークに接続する複数の無線接続インタフェースと、
前記複数の無線接続インタフェースの通信品質を測定する品質測定部と、
を更に備え、
前記構築部は、前記品質測定部により測定した測定結果に基づき、前記通信経路を変更する機能を更に有する請求項1に記載の基地局。 - 前記構築部は、前記移動端末と前記基地局との間に内部アクセス用の通信経路を構築する機能を更に有し、
前記移動端末から前記基地局が提供するサービスに対するアクセスについては、前記内部アクセス用の通信経路を用いて通信を行う請求項1に記載の基地局。 - 前記移動端末の所定のグループのアクセス権に関する情報を保持し、前記アクセス権に基づいて前記移動端末の前記基地局に対するアクセスの可否を管理するグループアクセス管理部を更に有し、
前記構築部は、前記グループアクセス管理部の前記アクセス権に関する情報をポリシー情報として、前記通信経路を構築する請求項1に記載の基地局。 - オペレータ毎に異なる複数のセルを前記移動端末に提供するセル管理部を更に有し、
前記構築部は、前記セル管理部より取得した前記移動端末が接続したセルに関する情報を前記ポリシー情報として、前記通信経路を構築する請求項3に記載の基地局。 - 属する通信オペレータが異なる複数の移動端末と、前記複数の移動端末が接続し、前記複数の移動端末の通信相手である前記通信オペレータが異なる複数の通信装置と前記複数の移動端末との間の通信を中継する基地局とを備える通信システムであって、
前記移動端末の移動管理を行う管理装置が、前記移動端末と前記通信装置との間の通信経路を構築するためのポリシー情報に基づいて、前記ポリシー情報を満たす前記基地局からの通信経路の他端となるゲートウェイであって、前記通信装置が属するネットワークへのアクセスを管理する前記ゲートウェイを選択し、
前記基地局が、前記ポリシー情報に基づいて、前記基地局自身から選択された前記ゲートウェイまでの前記通信経路を構築し、前記ポリシー情報の内容と、その内容に対応する前記通信経路を識別する識別情報とを関連情報として記憶領域に格納する通信システム。 - 前記基地局が前記移動端末からデータパケットを受信した場合、
前記基地局は、格納された前記関連情報に基づいて、受信された前記データパケットを送信すべき前記通信経路を選択する請求項8に記載の通信システム。 - 前記管理装置は、前記通信のトラフィックの優先度に応じて前記ゲートウェイを選択する請求項8又は9に記載の通信システム。
- 前記管理装置は、前記ゲートウェイを選択する際、前記管理装置が有する機能を保持するゲートウェイを選択する請求項8に記載の通信システム。
- 選択された前記ゲートウェイは、前記通信のトラフィックの優先度に応じて、接続する前記移動端末の認証処理を前記管理装置を介して行う請求項11に記載の通信システム。
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US9788338B2 (en) | 2012-12-28 | 2017-10-10 | Ntt Docomo, Inc. | Radio base station, router device, and mobile station |
JPWO2015056392A1 (ja) * | 2013-10-18 | 2017-03-09 | 日本電気株式会社 | ネットワーク制御のためのシステム及び方法 |
WO2015056392A1 (ja) * | 2013-10-18 | 2015-04-23 | 日本電気株式会社 | ネットワーク制御のためのシステム及び方法 |
JPWO2017130743A1 (ja) * | 2016-01-26 | 2018-11-15 | 京セラ株式会社 | 無線端末、通信装置及び基地局 |
US11197220B2 (en) | 2016-01-26 | 2021-12-07 | Kyocera Corporation | Radio terminal, communication device, and base station |
JP2018102015A (ja) * | 2018-03-27 | 2018-06-28 | 株式会社Nttドコモ | ブロードキャスト配信情報にアクセスするための方法及び装置 |
WO2020217486A1 (ja) * | 2019-04-26 | 2020-10-29 | ソフトバンク株式会社 | 中継装置及び中継方法 |
JPWO2020217486A1 (ja) * | 2019-04-26 | 2020-10-29 | ||
JP7260634B2 (ja) | 2019-04-26 | 2023-04-18 | ソフトバンク株式会社 | 中継装置及び中継方法 |
JP6788754B1 (ja) * | 2019-06-13 | 2020-11-25 | ソフトバンク株式会社 | 移動体通信システム及びその制御方法 |
WO2020250384A1 (ja) * | 2019-06-13 | 2020-12-17 | ソフトバンク株式会社 | 中継装置、中継方法、及び移動通信システム |
Also Published As
Publication number | Publication date |
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US20130142070A1 (en) | 2013-06-06 |
JPWO2012035697A1 (ja) | 2014-01-20 |
US9019861B2 (en) | 2015-04-28 |
JP5937514B2 (ja) | 2016-06-22 |
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