JP5983804B2 - Relay station apparatus, base station apparatus, mobile station apparatus, and radio communication system - Google Patents

Description

  The present invention relates to a relay station device, a base station device, a mobile station device, and a radio communication system. More specifically, in a cellular system in which a mobile station device is wirelessly connected to a network via a base station device, the mobile station device is not only communicating with the base station device, but is also wirelessly connected to the base station device. The present invention relates to a communication methodology for communicating with a relay station apparatus.

  A cellular radio communication system (hereinafter also simply referred to as “radio communication system”) includes a relay station apparatus for the purpose of extending a service area covered by a base station apparatus (hereinafter also simply referred to as “base station”). (Hereinafter, also simply referred to as “relay station”) may be installed. The base station is connected to an arbitrary mobile station apparatus (hereinafter, also simply referred to as “mobile station”) to provide a communication path, and at the same time, is connected to a relay station to provide a communication path with the relay station. The relay station further connects to another mobile station and provides a communication path. By taking such a form, the mobile station can communicate with the base station via the relay station. As a result, even when the mobile station exists outside the service area where the service is provided by the base station, the mobile station can perform communication if it exists within the service area covered by the relay station. Become.

  Regarding a wireless communication system in which a relay station exists, for example, a methodology for reducing the load on the relay station is disclosed (for example, see Patent Document 1). For example, in order to reduce processing at the relay station, a technique is disclosed in which the base station schedules the timing for transmitting data to the relay station at a timing that takes into account a time lag at the time when the relay station delivers data to the mobile station. (For example, refer to Patent Document 2 and Patent Document 3).

  Further, as a channel assignment control method in a wireless communication system in which a relay station exists, a method of controlling channel assignment based on a total average data rate is disclosed (for example, see Patent Document 4). In addition, regarding an antenna pattern operation method in a wireless communication system in which a relay station exists, a method of speeding up connection by switching an array antenna is disclosed (for example, see Patent Document 5).

  If a service area can be developed by installing a relay station in addition to installing a base station, a service provider can construct a wireless communication system with less investment.

JP 2008-118659 A JP 2008-48218 A JP 2008-109374 A JP 2008-48416 A JP 2008-48236 A

  However, in a wireless communication system in which a relay station exists, it is considered that the base station is connected to the mobile station via the relay station, and the form in which the relay station itself becomes the data endpoint is considered. It wasn't. Under these circumstances, the relay station itself needs to be installed as a part of the infrastructure of the service provider, and although the relay station is cheaper than the base station, the relay station is used as the service provider. I had to install it.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a communication path between a relay station and a base station to a mobile station, and Is to provide a new and improved technology that can be used as a communication endpoint.

  In order to solve the above-described problem, according to an aspect of the present invention, there is provided a wireless communication apparatus existing between a base station and a mobile station, wherein the wireless communication apparatus Relaying a first channel set in between, setting up a second channel between the base station and the wireless communication device, and for allocation of resources used by the second channel, A resource allocation signal receiving unit that receives resource information indicating a resource between a base station and the radio communication device from the base station by a radio signal, and a resource that stores the resource information received by the resource allocation signal receiving unit An information storage unit is provided.

  The radio communication device is a base that is a resource used by a radio signal transmitted and received between the base station and the radio communication device among radio signals transmitted and received between the base station and the mobile station. A base station side relay resource allocation signal receiving unit that receives base station side relay resource information indicating the base station side relay resource from the base station by a radio signal for allocation of station side relay resources, and the base station side relay A base station side relay resource information storage unit that stores the base station side relay resource information received by the resource allocation signal receiving unit may be further provided.

  The radio communication device is a resource that is a resource used by a radio signal transmitted and received between the mobile station and the radio communication device among radio signals transmitted and received between the base station and the mobile station. A mobile station side relay resource allocation signal receiving unit that receives mobile station side relay resource information indicating the mobile station side relay resource from the base station by a radio signal for the allocation of station side relay resources; and the mobile station side relay The mobile station side relay resource information storage part which memorize | stores the said mobile station side relay resource information received by the resource allocation signal receiving part may be further provided.

  The radio communication device is indicated by a radio signal receiving unit that receives a radio signal, and a resource used by the radio signal received by the radio signal receiving unit is indicated by the resource information stored by the resource information storage unit. In the case where the data is extracted, a data extraction unit that extracts data from the radio signal and a data storage unit that stores the data extracted by the data extraction unit may be further provided.

  The radio communication device is indicated by the base station side relay resource information in which resources used by the radio signal received by the radio signal reception unit are stored in the base station side relay resource information storage unit. In some cases, a radio signal transmission unit that transmits a radio signal using the mobile station side relay resource indicated by the mobile station side relay resource information stored in the mobile station side relay resource information storage unit, You may prepare.

  The radio signal transmission unit is indicated by the mobile station side relay resource information in which resources used by the radio signal received by the radio signal reception unit are stored in the mobile station side relay resource information storage unit In this case, a radio signal using the base station side relay resource indicated by the base station side relay resource information stored in the base station side relay resource information storage unit may be transmitted.

  The wireless communication apparatus may further include a display unit, and a display control unit that extracts the data from the data storage unit and displays the extracted data on the display unit.

  The data extraction unit further extracts display control information for controlling display from the wireless signal, the data storage unit further stores the display control information extracted by the data extraction unit, and the display control The unit may extract the data from the data storage unit based on the display control information stored in the data storage unit, and display the extracted data on the display unit.

The radio communication device allocates the resources between the mobile station relay stations to allocate resources between the mobile station relay stations, which are resources used by radio signals transmitted and received between the mobile station and the radio communication device. The mobile station relay station resource allocation signal receiving unit that receives the mobile station relay station resource information indicated by the radio signal from the base station and the mobile station relay station resource allocation signal receiving unit received by the mobile station relay station resource allocation signal receiving unit A mobile station relay station resource information storage unit that stores the inter resource information.
May be.

  The radio communication apparatus transmits a radio signal using the mobile station relay station resource indicated by the mobile station relay station resource information stored in the mobile station relay station resource information storage unit. And a transmission control unit that extracts the data from the data storage unit and transmits the extracted data to the wireless signal transmission unit by a wireless signal.

  The wireless communication device is capable of transmitting a wireless signal using the resource indicated by the resource information stored in the resource information storage unit, and a vending machine from the vending machine. An inventory data acquisition unit for acquiring in-flight inventory data, an inventory data storage unit for storing the inventory data acquired by the inventory data acquisition unit, and the inventory data stored by the inventory data storage unit are extracted. And a transmission control unit that transmits the extracted inventory data to the wireless signal transmission unit using a wireless signal.

  The fee for the communication performed by the wireless communication device is as follows: wireless signal transmission using the base station side relay resource by the wireless communication device, reception of a radio signal using the base station side relay resource, the mobile station side It may be calculated based on information regarding at least one of transmission of a radio signal using a relay resource and reception of a radio signal using the mobile station side relay resource.

  As described above, according to the present invention, a relay station can provide a mobile station with a communication path with a base station, and the relay station can be a communication endpoint.

It is a figure which shows the structural example of the radio | wireless communications system which concerns on 1st Embodiment of this invention. It is a figure which shows the usage example of the frequency resource which concerns on the same embodiment. It is the figure put together about the signal classification which the base station concerning the embodiment transmits. It is a figure for demonstrating the outline | summary of the relay station which concerns on the same embodiment. It is a figure shown about the example provided with the antenna which has the directivity from which the relay station which concerns on the same embodiment differs. It is a figure which shows the classification of the logical link which concerns on the same embodiment. It is a figure shown about the hardware constitutions of the mobile station which concerns on the same embodiment. FIG. 3 is a diagram showing a functional configuration of a mobile station according to the embodiment. It is a figure shown about the hardware constitutions of the base station which concerns on the same embodiment. It is a figure shown about the functional structure of the base station which concerns on the same embodiment. It is a figure shown about the hardware constitutions of the relay station which concerns on the same embodiment. It is a figure shown about the function structure of the relay station which concerns on the same embodiment. It is a figure which shows the example of channel utilization when a relay station does not exist. It is a figure which shows the example of channel utilization in case a relay station exists. It is a figure which shows the state by which the other channel of the relay station was allocated. It is a figure which shows the example of channel utilization when a relay station does not exist. It is a figure which shows the example of channel utilization in case a relay station exists. It is a figure which shows the state by which the other channel of the relay station was allocated. It is a flowchart which shows the flow of the process using a 1st logical link and a 3rd logical link. It is a flowchart which shows the flow of the process which calculates this charge with respect to the communication which a relay station performs.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

The description will be made in the following order.
1. 1. First embodiment 1-1. Consideration regarding advertisement distribution method 1-2. Issues of advertisement distribution method 1-3. Outline of means for solving the problem 1-4. Overview of wireless communication system according to present embodiment 1-5. Overview of relay station in wireless communication system 1-6. Definition of logical link type 1-7. Usage example of frequency resource 1-8. Channel use by relay station 1-9. Hardware configuration example of mobile station 1-10. Functional configuration example of mobile station 1-11. Hardware configuration example of base station 1-12. Functional configuration example of base station 1-13. Hardware configuration example of relay station 1-14. Functional configuration example of relay station 1-15. Signal processing of relay station 1-16. Specific examples of relay stations (Part 1: Electronic signage)
1-17. Specific example of relay station 300 (part 2: vending machine)
1-18. Example of billing system Modified example 2. Summary

<1. First Embodiment>
[1-1. Consideration about the advertisement delivery method]
Recently, an advertising system that uses an electronic display device as a signboard tends to be used. It is generally called a digital signage system. In such a system, there is a merit that the contents to be displayed can be changed every moment. Therefore, it is expected that a higher advertising effect can be obtained than a painted signboard or the like. In order to change the display contents, it is necessary to transfer display data to the display device, and a wireless communication system may be used for the purpose of delivering the display data to the display device. For example, the display device is equipped with a wireless communication device corresponding to a mobile station of the wireless communication system, the display data is delivered to the wireless communication device in the wireless communication system, and based on the display data delivered to the wireless communication device There is a display device that displays display contents.

  In addition, as a method for more effectively propagating advertisement information, a terminal that has received the advertisement information from the information broadcasting station displays the advertisement, and further transmits the advertisement information to another terminal for effective advertisement. A system for performing distribution is disclosed (for example, see JP-A-2002-298006). In this system, assuming that the information broadcasting station is a base station, the advertisement display device corresponds to a mobile station, and the mobile station transfers other contents displayed on its own display device to other mobile stations. The same advertisement can be transferred to the display of the mobile station.

[1-2. Challenges of advertising delivery method]
As described above, the electronic display device includes a wireless communication device corresponding to a mobile station of the wireless communication system, so that there is a display device that switches display contents based on display data distributed to the wireless communication device. To do. In such a device, since the communication station included in the display device is a mobile station, there has been a problem that a communication fee is incurred for data distribution for distributing display contents to the display device.

  Further, in a system in which advertisement information is propagated by exchanging between mobile stations, it is premised that the same information is propagated, so there is a problem that information that can be distributed is limited. In addition, since data propagation is performed between mobile stations, there has been a problem that it is not possible to specify where the information can be obtained when the mobile station obtains the propagation data.

[1-3. Outline of means for solving the problem]
Therefore, when the relay station includes an output device such as an electronic display device, the relay station provides a communication path to the mobile station while operating as an electronic signboard. As a result, the base station can provide the mobile station with the connection to the base station while delivering the data for the electronic signboard to the relay station, or deliver the relay station's own content to the mobile station. become.

  In addition, by connecting the relay station to a device such as a vending machine, the relay station communicates with the base station about data (inventory data) related to the inventory information of the vending machine, while Or providing a connection with the.

  By realizing the use as described above, it becomes possible for service providers to adopt a form of entrusting the installation of relay stations to a third party, and the service providers themselves make direct investments in relay stations. The service area can be expanded without doing so. At the same time, the person installing the relay station can reduce the charge for communication addressed to the relay station by the relay station contributing to the relay of communication between the mobile station and the base station. Become.

[1-4. Overview of Radio Communication System According to this Embodiment]
FIG. 1 is a diagram illustrating a configuration example of a wireless communication system according to the first embodiment of the present invention. As shown in FIG. 1, a system in which a mobile station 100 communicates wirelessly with a base station 200 installed on a rooftop of a building and the base station 200 connects to an external network 40 is a cellular system. Known as a wireless communication system. A so-called mobile phone system is an example of this system.

  In the wireless communication system 1, a service provider installs a large number of base stations 200 and develops a service area so that the mobile station 100 can be connected to any base station 200 wherever the mobile station 100 exists. FIG. 1 shows this state. In FIG. 1, the service area 20 indicates an area assumed to communicate with the base station 200. Thus, an area where the base station 200 can provide a service is called a cell or the like. For example, the mobile station 100 connects to the base station 200E when located in the service area 20E, and connects to the base station 200D when located in the service area 20D. In this way, by changing the base station 200 to be connected according to the location where the mobile station 100 is located, the connection with the base station 200 is not broken even when the mobile station 100 moves. .

  In such a system, for example, around the end of the service area 20, the mobile station 100 can receive signals from a plurality of base stations 200. Therefore, the base stations 200 may be arranged so that service areas 20 provided with services from the base stations 200 using the same frequency channel do not overlap each other. This example will be described with reference to FIG.

  FIG. 2 is a diagram illustrating an example of using frequency resources, and is a diagram schematically illustrating how the frequency resources allocated to the service provider are used. In many wireless communication systems 1, FDD (Frequency Division Duplex) that allocates different frequency bands to uplink channels (channels from the mobile station 100 to the base station 200) and downlink channels (channels from the base station 200 to the mobile station 100). ) Is adopted. Furthermore, both the uplink channel and the downlink channel are further subdivided, and a certain base station 200 allocates frequency channels so that only a part thereof is used. In this way, the base stations 200 are systematically arranged so that the same frequency band is not used by the adjacent base stations 200, so that interference is not caused.

  Information regarding the wireless communication system 1 is described in detail in, for example, “Digital Mobile Communication” ISBN-4-90577-25-8, supervised by Moriji Kuwahara, so please refer to these documents for details. The base station 200 transmits and receives signals necessary for communication with the mobile station 100 in a frequency band that is predetermined for use in the base station 200.

  FIG. 3 is a diagram summarizing signal types transmitted by the base station. First, the base station 200 periodically transmits a synchronization signal to the mobile station 100 for the purpose of notifying that the base station 200 exists and the reference time of the base station 200. By receiving this synchronization signal, the mobile station 100 detects that the base station 200 is in the vicinity, and further extracts information such as at which timing the signal can be received to receive the control signal.

  The base station 200 further periodically transmits a reference signal with a known pattern, and the reference signal is used for estimating a transmission path of a symbol whose information is modulated. In addition, the base station 200 transmits a control channel for notifying the mobile station 100 of control information. The control channel is a signal that can be demodulated and received using the timing information obtained from the synchronization signal and the transmission path estimation result obtained from the reference signal. The mobile station 100 can extract the outline information of the base station 200 by receiving this control channel.

  As the control channel, a plurality of types of control channels are defined, and the mobile station 100 first receives the control format identification channel, so that the control channel is transmitted in which frequency band and at which timing in this cell. Get basic information about whether it will come. The mobile station 100 receives the downlink control channel based on this basic information. As a result, the mobile station 100 obtains system parameters and the like, and determines whether communication with the base station 200 is possible or communication should be performed. When the mobile station 100 actually communicates with the base station 200, the mobile station 100 notifies the base station 200 of a traffic channel assignment request, and the traffic channel is assigned from the base station 200.

  Channels that carry traffic can be broadly divided into DTCH (Dedicated Traffic Channel) that is dedicated to a specific mobile station 100, and CTCH (Common Traffic Channel) that is a common channel to an unspecified number of mobile stations 100. Exists. When communicating with a specific mobile station 100, the base station 200 performs communication by allocating DTCH as a traffic channel, and when performing broadcast or multicast communication addressed to an unspecified number of mobile stations 100. Communication is performed by assigning a CTCH to a traffic channel. Here, the dedicated traffic channel is represented as DTCH, and the broadcast or multicast communication channel is represented as CTCH. However, the dedicated traffic channel may be referred to by a different name, and may be referred to by any name.

  The signal format used in the wireless communication system 1 is, for example, 3GPP TS 36.211 (3rd Generation Partnership Project); and Modulation) and 3GPP TS 36.213 (3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolve d Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures) are described in detail, so please refer to these documents for details.

[1-5. Outline of relay station in wireless communication system]
Although the mobile station 100 of the wireless communication system 1 has been described by exemplifying communication only with the base station 200, the relay station 300 is installed for the purpose of extending the service area covered by the base station 200. Cases are also conceivable. FIG. 4 is a diagram for explaining the outline of relay station 300. A mode in which the relay station 300 exists in the wireless communication system 1 will be described with reference to FIG.

  The base station 200A connects to an arbitrary mobile station 100A to provide a communication path, and simultaneously connects to the relay station 300A to provide a communication path with the relay station 300A. The relay station 300A further connects to another mobile station 100B and provides a communication path. By taking such a form, the mobile station 100B can communicate with the base station 200A via the relay station 300A. Thus, even when the mobile station 100B exists outside the service area 20A where the service is provided by the base station 200A, the mobile station 100B performs communication if it exists within the service area 30A covered by the relay station 300A. It will be possible.

  The relay station 300 described above can generally be implemented at a lower cost than the base station 200. Therefore, when the relay station 300 can be arranged as described above, the service provider can install the relay station 300 instead of installing the base station 200 according to the situation, thereby providing the service area 30. It becomes possible to provide services while suppressing investment.

[1-6. Definition of logical link type]
FIG. 6 is a diagram showing the types of logical links according to this embodiment. The type of logical link in this embodiment will be described with reference to FIG. In the wireless communication system 1 in the present embodiment, there is a direct link that is directly set between the base station 200 and the mobile station 100, as in a general cellular wireless communication system. Further, when the relay station 300 exists in the wireless communication system 1, a relay link that connects the mobile station 100 to the base station 200 via the relay station 300 exists. In this embodiment, this relay link is defined as a second logical link.

  In the second logical link, the mobile station 100 is physically connected to the relay station 300, and the relay station 300 is connected to the base station 200, but the logical link is similar to the direct link. The mobile station 100 is connected to the base station 200. Therefore, the authentication of the mobile station 100 performed before starting the communication is not performed by the relay station 300 but by the base station 200 or a control center connected to the base station 200. When the second logical link is established, the base station 200 starts communication with the relay station 300 via the second logical link, and the relay station 300 communicates with the base station 200 via the second logical link. The data transmitted to and received from the mobile station 100 is relay-connected to the mobile station 100 via the second logical link. The relay station 300 relay-connects data transmitted / received to / from the mobile station 100 via the second logical link to the base station 200 via the second logical link.

  In addition to the second logical link, there is a link that is set between the base station 200 and the relay station 300 and operates as the communication endpoint, and this link is designated as the first logical link. It is defined as The first logical link is established regardless of the presence of the mobile station 100, and is used for the purpose of data distribution from the base station 200 to the relay station 300.

  Further, there is a link set for performing closed data communication between the relay station 300 and the mobile station 100, and this link is defined as a third logical link. Since the mobile station 100 does not connect to the base station 200 when the third logical link is used, the mobile station 100 cannot connect to the wide area network 40 or the like using the third logical link. Further, when setting the second logical link, the mobile station 100 is authenticated by the base station 200 or the control center, whereas when setting the third logical link, the authentication of the mobile station 100 is relayed. At station 300. Therefore, the base station 200 or the network 40 to which the base station 200 is connected may not obtain information on the mobile station 100 connected by the third logical link.

  All of these logical links are dynamically established by a communication request from the mobile station 100 or the relay station 300 or by paging (calling) from the network 40 side to which the base station 200 is connected. Typically, with the establishment of a logical link, frequency resource allocation described later is performed. That is, according to the time zone, the first logical link, the second logical link, and the third logical link may or may not be established. When establishing the third logical link, the relay station 300 determines that a new frequency resource needs to be allocated in association with the establishment of the third logical link. A resource allocation request is issued to the base station 200. When the base station 200 accepts this request, the base station 200 notifies the relay station 300 of control information indicating which frequency resource may be used as a response result, and sets the frequency resource in which the third logical link is accommodated. Assign to relay station 300. The relay station 300 establishes a third logical link with the mobile station 100 using the allocated frequency resource for the third logical link.

[1-7. Frequency resource usage example]
Examples of frequency resource allocation will be described with reference to FIGS. 13 to 18. FIG. 13 to FIG. 18 illustrate usage examples of downlink channels used in the wireless communication system 1. First, a case will be described where frequency resources assigned to base station 200 are allocated in a time division manner.

  FIG. 13 illustrates an example of channel use when the relay station 300 does not exist in the wireless communication system 1. Base station 200 periodically transmits a synchronization signal and a control channel, and in other time zones where these signals are not transmitted, frequency resources are used as other channels. “Other channel” means a place where it is used as an uplink channel, a place where it is used as a traffic channel of a downlink channel, etc. However, for convenience of explanation, in the following, other channels are used as traffic channels. The explanation will be continued by taking the case as an example. Therefore, in the time zone written as “other channels” in FIG. 8, traffic channels and the like are accommodated, and the time zone in which data exchanged between the base station 200 and the mobile station 100 is actually transmitted and received. It becomes.

  FIG. 14 is a diagram illustrating an example of channel use when the relay station 300 is present in the wireless communication system 1. In the case illustrated in FIG. 14, the relay station 300 behaves as if it is the base station 200 with respect to the mobile station 100, and a signal equivalent to the synchronization signal or control signal transmitted by the base station 200 ( "Relay station synchronization signal", "Relay station control channel", etc.). By receiving this, the mobile station 100 recognizes the presence of the relay station 300, recognizes the relay station 300 as the base station 200 as necessary, and sets a communication path. At the time shown in FIG. 14, the frequency resources that can be used by the relay station 300 are only the synchronization signal and the control signal. In a time zone in which the relay station 300 does not need to propagate traffic, the state shown in FIG. 14 is a steady state.

  FIG. 15 shows a state where “another channel of the relay station” such as the relay station 300 propagating traffic is assigned in addition to the state shown in FIG. The relay station 300 accommodates a channel used for communication with the mobile station 100 and a channel used for communication with the base station 200 in the time zone of the “other channel of the relay station”. Perform data communication. This “other channel of the relay station” is controlled to increase the utilization time rate as the amount of data handled in the relay station 300 increases. When the relay station 300 has not established a logical link, as shown in FIG. 14, it is possible to allocate only the control signal as a use resource of the relay station 300. Can also be assigned. By assigning “another channel of the relay station”, it is possible to save the trouble of channel establishment.

  Next, a case will be described in which frequency resource allocation under the base station 200 is performed by frequency division. FIG. 16 illustrates an example of channel use when the relay station 300 does not exist in the wireless communication system 1. The base station 200 periodically transmits a synchronization signal and a control channel, but the frequency bandwidth that can be used by the base station 200 is wider than these signal bandwidths, and other signals in which these signals are not transmitted. In the frequency band / time band, the frequency resource is used as another channel. In the time zone written as “other channel” in FIG. 16, for example, a traffic channel is accommodated, and the time when data exchanged between the base station 200 and the mobile station 100 is actually transmitted and received. It becomes a belt.

  FIG. 17 is a diagram illustrating an example of channel use when the relay station 300 is present in the wireless communication system 1. In the case illustrated in FIG. 17, the relay station 300 behaves as if it is the base station 200 with respect to the mobile station 100, and a signal equivalent to the synchronization signal or control signal transmitted by the base station 200 ( "Relay station synchronization signal", "relay station control channel", etc.) are transmitted using a frequency band different from the frequency band used for the synchronization signal and control signal transmitted by the base station 200. By receiving this, the mobile station 100 recognizes the presence of the relay station 300, recognizes the relay station 300 as the base station 200 as necessary, and sets a communication path. In a time zone in which the relay station 300 does not need to propagate traffic, the state shown in FIG. 17 is a steady state.

  FIG. 18 shows a state in which “another channel of the relay station” such as the relay station 300 propagating traffic is assigned in addition to the state shown in FIG. This “other channel of the relay station” is controlled to increase the utilization time rate as the amount of data handled in the relay station 300 increases. When the relay station 300 has not established a logical link, as shown in FIG. 14, it is possible to allocate only the control signal as a use resource of the relay station 300. Can also be assigned. By assigning “another channel of the relay station”, it is possible to save the trouble of channel establishment.

  Thus, the relay station 300 under the control of the base station 200 and the base station 200 can accommodate the relay station 300 by sharing the used frequency resources by time division or frequency division. In the above description, the case where the synchronization signal and the control channel are continuously allocated in time is illustrated, but there are cases where these are not continuously allocated. Moreover, although the case where the other channels used by the relay station 300 are collectively assigned as one block has been illustrated, the other channels used by the relay station 300 may be distributed and assigned in a plurality of locations (time zones).

[1-8. Use of channel by relay station]
The breakdown of “other channels of relay station” explained above will be explained in detail. The “other channel of the relay station” includes at least the following types (1) to (4).
(1) Channel for accommodating the first logical link (2) Channel for accommodating communication between the base station 200 and the relay station 300 in the second logical link (3) In the second logical link Channel for accommodating communication between relay station 300 and mobile station 100 (4) Channel for accommodating third logical link

  Therefore, the “other channels of the relay station” shown in FIG. 15 and FIG. 18 include the above channels (1) to (4) depending on the case. As already described, the assignment of “other channel of relay station” is performed in such a manner that the base station 200 approves the request from the relay station 300. When the relay station 300 issues a frequency resource allocation request to the base station 200, the relay station 300 notifies the base station 200 which type of application the request is made, and the base station 200 200 controls the limitation of the frequency resource to be allocated in accordance with this type.

  The first logical link as well as the second logical link are typically established as a dedicated traffic channel DTCH. On the other hand, the third logical link may be established as a dedicated traffic channel DTCH, but is established as a common traffic channel CTCH and is connected to an unspecified number of mobile stations 100 in the vicinity from the relay station 300. Information distribution by broadcast may be performed.

[1-9. Example of hardware configuration of mobile station]
FIG. 7 is a diagram illustrating a hardware configuration of the mobile station according to the present embodiment. The hardware configuration of the mobile station according to this embodiment will be described with reference to FIG. The mobile station 100 is typically assumed to have a shape like a mobile phone terminal, but is not limited to a form phone terminal. The mobile station 100 includes a wireless signal processing unit 730. The radio signal processing unit 730 is a module that performs signal processing for performing communication with the base station 200 and signal processing for performing communication with the relay station 300. The signal processed by this module is transmitted / received to / from the communication partner base station 200 or relay station 300 via the antenna 710.

  The mobile station 100 includes a nonvolatile memory 760. The mobile station 100 can store the data received via the third logical channel in the nonvolatile memory 760, and then can retrieve the data from the nonvolatile memory 760 as necessary. The extracted data may be output from the output device 780 after being processed by a CPU 740 described later.

  The mobile station 100 is further equipped with a CPU 740, and the signal transmitted / received via the wireless signal processing unit 730 and the signal extracted from the nonvolatile memory 760 are subjected to digital signal processing in the CPU 740, for example. It is treated as a signal processed into various forms such as image information. This signal is output from the output device 780 (output from a display, output from a speaker, etc.). In addition, an input from the user is accepted via the input device 770 (input button, numeric keypad, touch panel, etc.), and the CPU 740 stores a program stored in the non-volatile memory 760 in accordance with the instruction, in a RAM (Random Access Memory). ) It is also possible to execute by expanding to 750.

[1-10. Example of functional configuration of mobile station]
FIG. 8 is a diagram illustrating a functional configuration of the mobile station according to the present embodiment. The functional configuration of the mobile station according to this embodiment will be described using FIG. As shown in FIG. 8, the mobile station 100 includes a receiving unit 110, a control unit 120, a transmitting unit 130, a storage unit 150, a display unit 160, and the like.

  The receiving unit 110 includes a wireless signal receiving unit 111 and the like. The receiving unit 110 is configured by, for example, an antenna, and the antenna that configures the receiving unit 110 may be the same as the antenna that configures the transmitting unit 130, or may be separate. Also good.

  The control unit 120 includes a data extraction unit 121, a display control unit 122, and the like. The control unit 120 has a function of controlling the operation of each functional block included in the mobile station 100. The control unit 120 is configured by, for example, a CPU and the like. The program stored in the nonvolatile memory is expanded in the RAM by the CPU, and the program expanded in the RAM is executed by the CPU. Is realized.

  The transmission unit 130 includes a wireless signal transmission unit 131 and the like. The transmission unit 130 is configured by, for example, an antenna, and the antenna that configures the transmission unit 130 may be the same as or different from the antenna that configures the reception unit 110. Also good.

  The storage unit 150 includes a data storage unit 151 and the like. The storage unit 150 is configured by, for example, a nonvolatile memory.

  The display unit 160 has a function as an example of an output device, and has a function of displaying display contents such as images and videos based on distribution data. The display unit 160 is configured by, for example, a display device.

  Assume that the mobile station 100 receives a radio signal from the relay station 300 via the third logical link. In that case, the radio signal receiver 111 receives a radio signal from the relay station 300. The control unit 120 determines resources used by the wireless signal received by the wireless signal receiving unit 111. The control unit 120 determines that the resource used by the radio signal received by the radio signal receiving unit 111 is indicated by the resource information between mobile station relay stations. In this case, the data extraction unit 121 extracts data from the radio signal because the radio signal received by the radio signal reception unit 111 is addressed to the mobile station 100, and the data storage unit 151 performs data extraction. The data extracted by the unit 121 is stored.

  As described above, when the mobile station 100 receives a radio signal from the relay station 300 via the third logical link, the data extraction unit 121 moves the radio signal received by the radio signal reception unit 111. Since the data is addressed to the station 100, data is extracted from the radio signal, and the data storage unit 151 stores the data extracted by the data extraction unit 121. The display control unit 122 extracts data from the data storage unit 151 and causes the display unit 160 to display the extracted data. The data displayed by the display unit 160 is assumed to be distribution data, for example, but is not particularly limited.

[1-11. Base station hardware configuration example]
FIG. 9 is a diagram illustrating a hardware configuration of the base station according to the present embodiment. The hardware configuration of the base station according to the present embodiment will be described using FIG. The base station 200 includes a wireless signal processing unit 830. The radio signal processing unit 830 is a module that performs signal processing for performing communication with the relay station 300 and signal processing for performing communication with the mobile station 100. A signal processed by this module is transmitted / received to / from the relay station 300 and the mobile station 100 which are communication partners via the antenna 810.

  The base station 200 includes a RAM (Random Access Memory) 850, a nonvolatile memory 860, and the like. The base station 200 further includes a CPU 840, and the CPU 840 can expand and execute a program stored in the nonvolatile memory 860 on the RAM 850.

  Base station 200 further includes a communication device 890. The communication device 890 is connected to the network 40, and the communication device 890 can transmit inventory data to the inventory management center or the like via the network 40. Further, the communication device 890 can receive data transmitted from another device to the relay station 300 via the network 40. In addition, the communication device 890 can communicate with other devices connected to the network 40 via the network 40.

[1-12. Example of functional configuration of base station]
FIG. 10 is a diagram illustrating a functional configuration of the base station according to the present embodiment. The functional configuration of the base station according to the present embodiment will be described using FIG. As illustrated in FIG. 10, the base station 200 includes a reception unit 210, a control unit 220, a transmission unit 230, a storage unit 250, a communication unit 270, and the like.

  The reception unit 210 includes a base station relay station resource allocation request reception unit 211, a base station side relay resource allocation request reception unit 212, a mobile station side relay resource allocation request reception unit 213, a radio signal reception unit 214, and between mobile station relay stations. A resource allocation request receiving unit 215 and the like are provided. The receiving unit 210 is constituted by an antenna, for example, and the antenna constituting the receiving unit 210 may be the same as or different from the antenna constituting the transmitting unit 230. Also good.

  The control unit 220 includes a base station relay station resource allocation processing unit 221, a base station side relay resource allocation processing unit 222, a mobile station side relay resource allocation processing unit 223, a mobile station relay station resource allocation processing unit 225, and the like. It is. The control unit 220 has a function of controlling the operation of each functional block included in the base station 200. The control unit 220 is configured by, for example, a CPU and the like, and a program stored in the nonvolatile memory is expanded in the RAM by the CPU, and the program expanded in the RAM is executed by the CPU. Is realized.

  Transmitter 230 includes base station relay station resource allocation response transmitter 231, base station relay resource allocation response transmitter 232, mobile station relay resource allocation response transmitter 233, radio signal transmitter 234, and mobile station relay station A resource allocation response transmission unit 235 and the like are provided. The transmission unit 230 is configured by, for example, an antenna, and the antenna that configures the transmission unit 230 may be the same as or different from the antenna that configures the reception unit 210. Also good.

  The storage unit 250 includes a base station relay station resource information storage unit 251, a base station side relay resource information storage unit 252, a mobile station side relay resource information storage unit 253, a mobile station relay station resource information storage unit 255, and the like. It is. The storage unit 250 is configured by, for example, a nonvolatile memory.

  The communication unit 270 has a function of performing communication with other devices connected to the network 40 via the network 40. The communication part 270 is comprised by a communication apparatus etc., for example.

  The base station 200 assigns resources between base station relay stations, which are resources used by radio signals transmitted and received between the relay station 300 and its own station, to set up the first logical link. Required by For this purpose, the inter-base station relay station resource allocation request receiving unit 211 receives, from the relay station 300, a radio signal as a base station inter-relay station resource allocation request indicating that an allocation of inter-base station inter-resource resources is requested. The inter-base station relay station resource allocation processing unit 221 performs a process of allocating inter-base station relay station resources. The base station relay station resource allocation response transmission unit 231 receives base station relay station resource information indicating the base station relay station resource as a base station relay station resource allocation response as a response to the base station relay station resource allocation request. It transmits to relay station 300 by a radio signal. The base station relay station resource information storage unit 251 stores the base station relay station resource information allocated by the base station relay station resource allocation processing unit 221. In this embodiment, the frequency (frequency resource) used by the radio signal and the time at which the radio signal is transmitted / received are used as examples of the resource. However, what is used as the resource is not particularly limited. Absent.

  The base station 200 can communicate with the relay station 300 via the first logical link by using the base station relay station resource information stored in the base station relay station resource information storage unit 251. become able to.

  In addition, the base station 200 includes a base station among radio signals that are relayed by the relay station 300 and transmitted / received between the base station 200 and the mobile station 100 in order to establish a second logical link on the base station side. The relay station 300 requests allocation of relay resources on the base station side that are resources used by radio signals transmitted and received between the relay station 200 and the relay station 300. For this purpose, the base station side relay resource allocation request receiving unit 212 receives a base station side relay resource allocation request from the relay station 300 by a radio signal indicating that the base station side relay resource allocation request is made. The base station side relay resource allocation processing unit 222 performs processing to allocate base station side relay resources. The base station side relay resource allocation response transmission unit 232 wirelessly transmits to the relay station 300 base station side relay resource information indicating the base station side relay resource as a base station side relay resource allocation response that is a response to the base station side relay resource allocation request. Send by signal. The base station side relay resource information storage unit 252 stores the base station side relay resource information allocated by the base station side relay resource allocation processing unit 222.

  The base station 200 can communicate with the relay station 300 via the second logical link by using the base station side relay resource information stored in the base station side relay resource information storage unit 252. become.

  In addition, the base station 200 sets the second logical link on the mobile station side, among the radio signals relayed by the relay station 300 and transmitted and received between the base station 200 and the mobile station 100. The relay station 300 requests allocation of relay resources on the mobile station side, which are resources used by radio signals transmitted and received between the relay station 100 and the relay station 300. The mobile station side relay resource allocation request receiving unit 213 receives a mobile station side relay resource allocation request from the relay station 300 by a radio signal indicating that the mobile station side relay resource allocation request is made. The mobile station side relay resource allocation processing unit 223 performs processing to allocate mobile station side relay resources. The mobile station side relay resource allocation response transmission unit 233 wirelessly transmits to the relay station 300 mobile station side relay resource information indicating the mobile station side relay resource as a mobile station side relay resource allocation response that is a response to the mobile station side relay resource allocation request. Send by signal. The mobile station side relay resource information storage unit 253 stores the mobile station side relay resource information allocated by the mobile station side relay resource allocation processing unit 223.

  Assume that the base station 200 receives a radio signal from the relay station 300 via the first logical link. In that case, the radio signal receiving unit 214 receives a radio signal from the relay station 300. The control unit 220 determines resources used by the wireless signal received by the wireless signal receiving unit 214. The control unit 220 is indicated by resource information between base station relay stations in which resources used by the radio signal received by the radio signal reception unit 214 are stored in the resource information storage unit between base station relay stations 251. Judge. In that case, the control unit 220 extracts data from the radio signal received by the radio signal receiving unit 214 and performs processing according to the type of data. For example, when inventory data is extracted from a radio signal received by the radio signal receiving unit 214, the inventory data is transmitted to the inventory management center via the communication unit 270.

  Assume that the base station 200 receives a radio signal from the relay station 300 via the second logical link on the base station side. In that case, the radio signal receiving unit 214 receives a radio signal from the relay station 300. The control unit 220 determines resources used by the wireless signal received by the wireless signal receiving unit 214. The control unit 220 determines that the resource used by the radio signal received by the radio signal receiving unit 214 is indicated by the base station side relay resource information stored in the base station side relay resource information storage unit 252. To do. The control unit 220 extracts data from the radio signal received by the radio signal reception unit 214 and performs processing according to the type of data. That is, when the wireless signal receiving unit 214 receives a wireless signal via the second logical link on the mobile station side, the control unit 220 executes processing according to the received wireless signal.

  The wireless signal transmission unit 234 can transmit data with a wireless signal to the relay station 300 via the first logical link. Examples of data to be transmitted to the relay station 300 include display data and distribution data. Examples of display data include advertisement information. Moreover, the base station 200 can transmit display control information for controlling display of display data together with display data. These data can be received from the network via the communication unit 270, for example, and may be read from a recording medium or the like.

  The base station 200 assigns resources between mobile station relay stations, which are resources used by radio signals transmitted and received between the mobile station 100 and the relay station 300, to establish a third logical link. 300 is required. The mobile station relay station resource allocation request receiving unit 215 receives a mobile station relay station resource allocation request from the relay station 300 by a radio signal indicating that the mobile station relay station resource allocation request is requested. The mobile station relay station resource allocation processing unit 225 performs processing to allocate mobile station relay station resources. The mobile station relay station resource allocation response transmitter 235 relays mobile station relay resource information indicating the mobile station relay station resource as a mobile station relay station resource allocation response that is a response to the mobile station relay station resource allocation request. Transmit to station 300 by radio signal. The mobile station relay station resource information storage unit 255 stores the mobile station side relay resource information allocated by the mobile station relay station resource allocation processing unit 225.

[1-13. Example of relay station hardware configuration]
FIG. 11 is a diagram illustrating a hardware configuration of the relay station according to the present embodiment. The hardware configuration of the relay station according to this embodiment will be described with reference to FIG. The relay station 300 includes a wireless signal processing unit 930. The radio signal processing unit 930 is a module that performs signal processing for performing communication with the base station 200 and signal processing for performing communication with the mobile station 100. The signal processed by this module is transmitted / received to / from the base station 200 and the mobile station 100 which are communication partners via antennas (first antenna 910, second antenna 920, etc.). The antenna includes a plurality of antennas (for example, two antennas, a first antenna 910 and a second antenna 920), and may have different directivities depending on a communication partner. FIG. 5 is a diagram illustrating an example in which the relay station 300 includes antennas having different directivities. For example, as shown in FIG. 5, when the relay station 300A communicates with the connected base station 200A, as shown by the beam pattern B1, the relay station 300A determines directivity for the base station 200A to be a communication partner. When performing communication with the mobile station 100 and performing communication with the mobile station 100, transmission / reception is performed with a pattern as indicated by the beam pattern B2 having directivity toward the area provided by the relay station 300A. A range in which a signal transmitted by the beam pattern B1 can be received is indicated as a service area 30A1, and a range in which a signal transmitted by the beam pattern B2 can be received is indicated as a service area 30A2.

  The relay station 300 includes a nonvolatile memory 960. The relay station 300 can store data received via the first logical channel in the nonvolatile memory 960, and then can retrieve the data from the nonvolatile memory 960 as necessary. The extracted data may be processed by a CPU 940, which will be described later, and then output from the output device 980, or may be distributed to the mobile station 100 via the wireless signal processing unit 930.

  The relay station 300 further includes a CPU 940, and signals transmitted / received via the wireless signal processing unit 930 and signals taken out from the nonvolatile memory 960 are subjected to digital signal processing in the CPU 940, for example, It is treated as a signal processed into various forms such as image information. This signal is output from the output device 980 (output from a display, output from a speaker, etc.). Also, an input from the user is received via the input device 970 (input button, numeric keypad, touch panel, etc.), and the CPU 940 expands the program stored in the non-volatile memory 960 in the RAM 950 according to the instruction. It is also possible to execute.

[1-14. Example of functional configuration of relay station]
FIG. 12 is a diagram illustrating a functional configuration of the relay station according to the present embodiment. The functional configuration of the relay station according to this embodiment will be described with reference to FIG. As illustrated in FIG. 12, the relay station 300 includes a reception unit 310, a control unit 320, a transmission unit 330, a storage unit 350, a display unit 360, and the like.

  The reception unit 310 includes a base station relay station resource allocation response reception unit 311, a base station side relay resource allocation response reception unit 312, a mobile station side relay resource allocation response reception unit 313, a radio signal reception unit 314, and between mobile station relay stations A resource allocation response receiving unit 315 and the like are provided. The receiving unit 310 is configured by, for example, an antenna, and the antenna that configures the receiving unit 310 may be the same as or different from the antenna that configures the transmitting unit 330. Also good.

  The control unit 320 includes a data extraction unit 321, a display control unit 322, a transmission control unit 323, an inventory data acquisition unit 324, and the like. The control unit 320 has a function of controlling the operation of each functional block included in the relay station 300. The control unit 320 is configured by, for example, a CPU and the like. The program stored in the non-volatile memory is expanded in the RAM by the CPU, and the program expanded in the RAM is executed by the CPU. Is realized.

  The transmission unit 330 includes a base station relay station resource allocation request transmission unit 331, a base station side relay resource allocation request transmission unit 332, a mobile station side relay resource allocation request transmission unit 333, a radio signal transmission unit 334, and between mobile station relay stations. A resource allocation request transmission unit 335 is provided. The transmission unit 330 is configured by, for example, an antenna. The antenna that configures the transmission unit 330 may be the same as or different from the antenna that configures the reception unit 310. Also good.

  The storage unit 350 includes a base station relay station resource information storage unit 351, a base station side relay resource information storage unit 352, a mobile station side relay resource information storage unit 353, a data storage unit 354, and a mobile station relay station resource information storage unit. 355, an inventory data storage unit 356, and the like. The storage unit 350 is configured by, for example, a nonvolatile memory.

  The display unit 360 has a function as an example of an output device, and has a function of displaying display contents such as images and videos based on display data. The display unit 360 is configured by, for example, a display device. Although various types of display devices can be used as the display device, for example, an electronic signboard or the like can be used.

  The relay station 300 allocates resources between base station relay stations, which are resources used by radio signals transmitted and received between the base station 200 and the own station, in order to set up the first logical link. Need to request. For this purpose, the inter-base station relay station resource allocation request transmission unit 331 transmits to the base station 200 by radio signal a base station inter-relay station resource allocation request indicating that the allocation of inter-base station inter-resource resources is requested. The base station relay station resource allocation response receiving unit 311 receives base station relay station resource information indicating a base station relay station resource as a base station relay station resource allocation response as a response to the base station relay station resource allocation request. It receives from the base station 200 by a radio signal. The base station relay station resource information storage unit 351 stores the base station relay station resource information received by the base station relay station resource allocation response receiver 311. As described above, in the present embodiment, the frequency (frequency resource) used by the radio signal and the time at which the radio signal is transmitted / received are used as an example of the resource. It is not limited.

  The relay station 300 can communicate with the base station 200 via the first logical link by using the base station relay station resource information stored in the base station relay station resource information storage unit 351. become able to.

  In addition, the relay station 300 sets the second logical link on the base station side, out of the radio signals relayed by the local station and transmitted / received between the base station 200 and the mobile station 100. It is necessary to request the base station 200 to allocate a base station side relay resource that is a resource used by a radio signal transmitted and received between the base station 200 and the own station. For this purpose, the base station side relay resource allocation request transmission unit 332 transmits a base station side relay resource allocation request indicating that the base station side relay resource allocation is requested to the base station 200 by a radio signal. The base station side relay resource allocation response reception unit 312 wirelessly transmits base station side relay resource information indicating the base station side relay resource from the base station 200 as a base station side relay resource allocation response that is a response to the base station side relay resource allocation request. Receive by signal. The base station side relay resource information storage unit 352 stores the base station side relay resource information received by the base station side relay resource assignment response receiving unit 312.

  The relay station 300 can communicate with the base station 200 via the second logical link by using the base station side relay resource information stored in the base station side relay resource information storage unit 352. become.

  In addition, the relay station 300 sets the second logical link on the mobile station side, and among the radio signals transmitted and received between the base station 200 and the mobile station 100 by being relayed by the mobile station 100, the relay station 100 It is necessary to request the base station 200 to allocate mobile station side relay resources, which are resources used by radio signals transmitted and received between the mobile station and the own station. The mobile station side relay resource allocation request transmission unit 333 transmits a mobile station side relay resource allocation request indicating that the mobile station side relay resource allocation is requested to the base station 200 by a radio signal. The mobile station side relay resource allocation response receiving unit 313 wirelessly transmits, from the base station 200, mobile station side relay resource information indicating the mobile station side relay resource as a mobile station side relay resource allocation response that is a response to the mobile station side relay resource allocation request. Receive by signal. The mobile station side relay resource information storage unit 353 stores the mobile station side relay resource information received by the mobile station side relay resource assignment response receiving unit 313.

  The relay station 300 can communicate with the mobile station 100 via the second logical link by using the mobile station side relay resource information stored in the mobile station side relay resource information storage unit 353. become. Also, the relay station 300 transmits the mobile station side relay resource information stored in the mobile station side relay resource information storage unit 353 to the mobile station 100 by a radio signal via the transmission unit 330, and also transmits to the mobile station 100. It is necessary to store mobile station side relay resource information. Thereby, the mobile station 100 can communicate with the relay station 300 via the second logical link by using the mobile station side relay resource information.

  Assume that the relay station 300 receives a radio signal from the base station 200 via the first logical link. In that case, the radio signal receiving unit 314 receives a radio signal from the base station 200. The controller 320 determines resources used by the radio signal received by the radio signal receiver 314. The control unit 320 is indicated by resource information between base station relay stations in which resources used by the radio signal received by the radio signal receiving unit 314 are stored in the resource information storage unit 351 between base station relay stations. Judge. In this case, the data extraction unit 321 extracts data from the radio signal because the radio signal received by the radio signal reception unit 314 is addressed to the relay station 300, and the data storage unit 354 The data extracted by the unit 321 is stored.

  Assume that the relay station 300 receives a radio signal from the base station 200 via the second logical link on the base station side. In that case, the radio signal receiving unit 314 receives a radio signal from the base station 200. The controller 320 determines resources used by the radio signal received by the radio signal receiver 314. The control unit 320 determines that the resource used by the radio signal received by the radio signal receiving unit 314 is indicated by the base station side relay resource information stored in the base station side relay resource information storage unit 352. To do. The radio signal transmission unit 334 uses the mobile station side relay resource indicated by the mobile station side relay resource information stored in the mobile station side relay resource information storage unit 353, and receives the radio signal received by the radio signal reception unit 314. Send a signal. That is, the radio signal transmission unit 334 transmits the radio signal received by the radio signal reception unit 314 to the mobile station 100 via the second logical link on the mobile station side.

  Further, it is assumed that the relay station 300 receives a radio signal from the mobile station 100 via the second logical link on the mobile station side. In that case, the radio signal receiving unit 314 receives a radio signal from the mobile station 100. The controller 320 determines resources used by the radio signal received by the radio signal receiver 314. The control unit 320 determines that the resource used by the radio signal received by the radio signal receiving unit 314 is indicated by the mobile station side relay resource information stored in the mobile station side relay resource information storage unit 353. To do. The radio signal transmission unit 334 uses the base station side relay resource indicated by the base station side relay resource information stored in the base station side relay resource information storage unit 352, and receives the radio signal received by the radio signal reception unit 314. Send a signal. That is, the radio signal transmission unit 334 transmits the radio signal received by the radio signal reception unit 314 to the base station 200 via the second logical link on the base station side.

  As described above, when the relay station 300 receives a radio signal from the base station 200 via the first logical link, the data extraction unit 321 relays the radio signal received by the radio signal reception unit 314. Since the data is addressed to the station 300, data is extracted from the radio signal, and the data storage unit 354 stores the data extracted by the data extraction unit 321. The display control unit 322 extracts data from the data storage unit 354 and causes the display unit 360 to display the extracted data. The data displayed by the display unit 360 is assumed to be advertisement information, for example, but is not particularly limited.

  The radio signal transmitted from the base station 200 may include display control information for controlling display. In that case, the data extraction unit 321 further extracts display control information from the radio signal received by the radio signal reception unit 314, and the data storage unit 354 further extracts the display control information extracted by the data extraction unit 321. Remember. The display control unit 322 extracts data from the data storage unit 354 based on the display control information stored in the data storage unit 354 and causes the display unit 360 to display the extracted data. By using the display control information in this way, the timing for displaying the display data on the display unit 360 can be controlled.

  The relay station 300 allocates resources between mobile station relay stations, which are resources used by radio signals transmitted and received between the mobile station 100 and the mobile station 100, in order to set up a third logical link. Need to request. The mobile station relay station resource allocation request transmission unit 335 transmits a mobile station relay station resource allocation request to the base station 200 by a radio signal indicating that the mobile station relay station resource allocation request is requested. The mobile station relay station resource allocation response receiving unit 315 receives mobile station relay station resource information indicating the mobile station relay station resource as a mobile station relay station resource allocation response that is a response to the mobile station relay station resource allocation request. It receives from the base station 200 by a radio signal. The mobile station relay station resource information storage unit 355 stores the mobile station relay station resource information received by the mobile station relay station resource allocation response reception unit 315.

  The relay station 300 can communicate with the mobile station 100 via the third logical link by using the mobile station relay station resource information stored in the mobile station relay station resource information storage unit 355. become able to. Also, the relay station 300 transmits the mobile station relay station resource information stored in the mobile station relay station resource information storage unit 355 to the mobile station 100 by a radio signal via the transmission unit 330, and Also, it is necessary to store resource information between mobile station relay stations. Accordingly, the mobile station 100 can communicate with the relay station 300 via the third logical link by using the mobile station relay station resource information.

  It is assumed that the relay station 300 transmits a radio signal received from the base station 200 to the mobile station 100 via the first logical link. In that case, the radio signal transmission unit 334 transmits a radio signal using the resource between mobile station relay stations indicated by the resource information between mobile station relay stations stored in the resource information storage unit between mobile station relay stations 355. The transmission control unit 323 extracts data from the data storage unit 354, and causes the wireless signal transmission unit 334 to transmit the extracted data using a wireless signal. That is, the radio signal transmission unit 334 transmits a radio signal from the data stored in the data storage unit 354 to the mobile station 100 via the third logical link. The data extracted from the data storage unit 354 by the transmission control unit 323 is assumed to be distribution data, and may be the same as the display data extracted by the data extraction unit 321 and displayed on the display unit 360. May be different.

  The relay station 300 can also transmit data to the base station 200 via the first logical link. For example, the radio signal transmission unit 334 may transmit a radio signal using the base station relay station resources indicated by the base station relay station resource information stored in the base station relay station resource information storage unit 351. The inventory data acquisition unit 324 acquires the inventory data in the vending machine from the vending machine connected to the relay station 300. The inventory data storage unit 356 stores the inventory data acquired by the inventory data acquisition unit 324. The transmission control unit 323 extracts the inventory data stored in the inventory data storage unit 356, and causes the wireless signal transmission unit 334 to transmit the extracted inventory data using a wireless signal.

  The base station 200 transmits the inventory data transmitted from the relay station 300 to, for example, an inventory management center that manages the inventory data via the network 40. In this way, the inventory management center can grasp the inventory status of the products in the vending machine by communicating with the relay station 300 via the first logical link.

  The communication performed by the relay station 300 includes a communication via the first logical link, the second logical link, and the third logical link. However, the communication performed mainly by the relay station 300 is communication using the first logical link and communication using the third logical link, and communication using the second logical link is the relay station. For 300, it is performed to relay communication between the mobile station 100 and the relay station 300. Therefore, the charge for the communication performed by the relay station 300 is calculated based on the charge for the communication using the first logical link or the charge for the communication using the third logical link by the charge calculation device. The charge for the communication used may be reduced. In other words, the charge for communication performed by the relay station 300 is as follows: wireless signal transmission by the relay station 300 using the base station side relay resource, reception of the radio signal using the base station side relay resource, mobile station side relay resource It may be calculated by the charge calculation device based on information regarding at least one of transmission of a radio signal using the mobile station and reception of a radio signal using the mobile station side relay resource.

[1-15. Relay station signal processing]
When the second logical link is established, the relay station 300 transmits (relays) the data received via the second logical link to the base station 200 or the mobile station 100. For example, a generally known methodology is used as the relay methodology, but the relay methodology using the second logical link is not particularly limited.

  FIG. 19 is a flowchart showing a flow of processing using the first logical link and the third logical link. Below, the utilization form of a 1st logical link and a 3rd logical link is demonstrated using FIG. The relay station 300 establishes a first logical link in response to paging from the network 40 side to which the base station is connected or a request generated by the relay station 300 itself. The relay station 300 downloads data used by the relay station 300 itself via the first logical link (step S101). Further, the relay station 300 stores the received data in the data storage unit (step S102). The received data includes content output by the display unit, content delivered by the relay station 300 to the mobile station 100 via the third logical link, and the like. Further, the received data includes control information indicating how the content is distributed, such as a threshold value used for controlling the update frequency of the output data.

  In parallel with this, the relay station 300 operates a timer. For example, when the elapsed time of the time measured exceeds a certain threshold (“Yes” in step S103), the data stored in the data storage unit is extracted. Then (step S104), the display data output from the display unit such as a display device provided in itself is updated with the extracted data (step S105). As a result, the content displayed at the relay station 300 can be dynamically changed.

  Further, when the third logical link is established, the relay station 300 extracts distribution data to be distributed to the surrounding mobile stations 100 from the information stored in the data storage unit, and the third logical link is established. It transmits to the mobile station 100 via a link (step S106). When the relay station 300 determines that it is necessary to allocate a new frequency resource in order to distribute data on the third logical link, the relay station 300 transmits the data to the base station 200 prior to data distribution via the third logical link. Requests allocation of frequency resources in the third logical link application. When a resource is allocated from the base station 200, the relay station 300 notifies the mobile station 100 of this resource information, and then performs data transmission via the third logical link using the frequency resource.

  In the above description, the case where the update of the output data (display data) and the distribution of the data using the third logical link are performed at the same time is illustrated, but the execution triggers of both are different timings. May be. In the example shown in FIG. 19, the output data (display data) and the distribution data are updated based on the passage of time. However, these processes may be activated by an event other than the passage of time. . This event may be distributed from the base station 200 to the relay station 300 via the first logical link as control information indicating how the above-described content is distributed.

  When the relay station 300 establishes a common traffic channel CTCH as a third logical link and distributes information by broadcast to an unspecified number of mobile stations 100 around the relay station 300 via this traffic channel. Is typical. However, the relay station 300 may distribute information to the mobile station 100 using the third logical link in response to a request from the mobile station 100 or the like. In such a case, the relay station 300 establishes a dedicated traffic channel DTCH as a third logical link toward the mobile station 100 that issued the request, and performs data transfer to the mobile station 100 via this traffic channel. .

  As described above, data distribution performed via the third logical link is performed by extracting information stored in the non-volatile memory 960 of the relay station 300. Therefore, the same data is distributed multiple times. There is also. The data is data that has been previously distributed from the base station 200 to the relay station 300 via the first logical link, and the mobile station 100 is used even though the first logical link is used only once. Can be distributed over a plurality of times, so that it is possible to improve the efficiency of using frequency resources.

[1-16. Specific example of relay station (Part 1: In the case of electronic signage)]
What kind of device the relay station 300 is will be described with a more specific example. In this example, the relay station 300 is an apparatus that operates as an electronic signboard. In this case, the data transferred from the base station 200 to the relay station 300 via the first logical link is advertisement information, and the output device 980 in the relay station 300 is assumed to have a display size equivalent to 32 inches or more. Is done. This display is used to allow an unspecified number of people to browse content directly. The content is mostly moving image information, and the content of the moving image information to be reproduced is transferred from the base station 200 side via the first logical link, stored in the non-volatile memory 960, the elapsed time or Information to be displayed is updated according to the time zone and other factors. Control information on how to update the display content is also transferred from the base station 200 via the first logical link and stored in the nonvolatile memory 960.

  The data transferred to the relay station 300 via the first logical link also includes data distributed from the relay station 300 to the mobile station 100 via the third logical link. These data may be the same as the contents displayed on the display of relay station 300, but are typically distributed as separate data for distribution to mobile station 100 device.

  As described with reference to FIG. 5, when the relay station 300 </ b> A communicates with the mobile station 100, the relay station 300 </ b> A is indicated by the beam pattern B <b> 2 that defines directivity toward the area provided by the relay station 300 </ b> A. The transmission / reception antenna radiation pattern may be matched with the display direction of the display. In this way, it is possible to prompt a person who is watching the display of the relay station 300 to establish a third logical link.

  As described above, the relay station 300 having a function as an electronic signboard facilitates the installation of the relay station 300 by the electronic signage contractor rather than the service provider. Needless to say, also in this case, the relay station 300 has a function of providing a communication path between the mobile station 100 and the base station 200 by establishing the second logical link already described.

[1-17. Specific example of relay station 300 (part 2: vending machine)]
A specific configuration of relay station 300 will be described with another example. This is an example when the relay station 300 is an apparatus that manages inventory data of vending machines. In this case, as shown in FIG. 12, the relay station 300 includes an inventory data storage unit, and the inventory data storage unit stores the product inventory data in the vending machine, and the product inventory in the vending machine decreases. A notification to that effect is sent to the inventory management center via the base station 200. In this case, the data transferred between the base station 200 and the relay station 300 via the first logical link includes commodity inventory data in the vending machine.

  In addition, the data transferred to the relay station 300 via the first logical link includes data distributed from the relay station 300 to the mobile station 100 via the third logical link. After the data is stored in the data storage unit, it is distributed to the mobile station 100 as needed via the third logical link.

  As described above, the relay station 300 manages the inventory data in the vending machine, thereby promoting the installation of the relay station 300 by the vending machine installer instead of the service provider. Needless to say, also in this case, the relay station 300 has a function of providing a communication path between the mobile station 100 and the base station 200 by establishing the second logical link already described.

[1-18. Billing system example]
As described above, when the relay station 300 is installed by a person other than the service provider of the wireless communication system 1, the owner of the relay station 300 uses the first logical link and the third logical link. It is necessary to pay the service provider for the frequency resources occupied by the service provider. However, since the relay station 300 also assists in establishing the second logical link and connecting the mobile station 100 to the base station 200, the assisting work is provided to the owner of the relay station 300. It is considered that the operator should pay the consideration. Therefore, it is recommended that a billing system that takes these into account is set. FIG. 20 is a flowchart showing a flow of processing for calculating the charge for communication performed by the relay station. This example will be described with reference to FIG. The usage fee calculation as shown below is calculated by, for example, a fee calculation device.

  The fee calculation apparatus sets the total amount of frequency resources used in communication via the first logical link as a variable A (step S201), and the total amount of frequency resources used in communication via the second logical link. Is set to variable B (step S201), and the total amount of frequency resources used in communication via the third logical link is set to variable C (step S203). The fee calculating apparatus adds A and C to αC weighted by α, and adopts a value obtained by subtracting βB weighted by β from β as the charging fee X (step S204).

  In this way, the charging information can be extracted by subtracting the frequency resource contributed by the relay station 300 to the service provider from the frequency resource used by the relay station 300 for its own convenience. The total amount of frequency resources is calculated based on, for example, the used frequency bandwidth and the total time using the frequency bandwidth, for example, multiplying the used frequency bandwidth by the total time using the frequency bandwidth. Is calculated by

<2. Modification>
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

<3. Summary>
According to the present embodiment, it is possible to provide a technique in which a relay station provides a mobile station with a communication path with a base station, and the relay station can be used as a communication endpoint. Accordingly, the relay station can operate as a user of the wireless communication system while operating as a part of the infrastructure facility. Moreover, since the radio | wireless communications system can provide the resource used by a radio signal as needed, it comes to be able to utilize a resource effectively.

DESCRIPTION OF SYMBOLS 1 Wireless communication system 40 Network 100 Mobile station 111 Radio signal receiving part 121 Data extraction part 122 Display control part 131 Wireless signal transmission part 151 Data storage part 160 Display part 200 Base station 211 Inter-relay station resource allocation request receiving part 212 Base Station side relay resource allocation request receiving unit 213 Mobile station side relay resource allocation request receiving unit 214 Radio signal receiving unit 215 Mobile station relay station resource allocation request receiving unit 221 Base station relay station resource allocation processing unit 222 Base station side relay resource Allocation processing unit 223 Mobile station side relay resource allocation processing unit 225 Mobile station relay station resource allocation processing unit 231 Base station relay station resource allocation response transmission unit 232 Base station side relay resource allocation response transmission unit 233 Mobile station side relay resource allocation Response transmitter 234 Radio signal transmitter 235 Mobile station relay station resource allocation response transmission unit 251 Base station relay station resource information storage unit 252 Base station side relay resource information storage unit 253 Mobile station side relay resource information storage unit 255 Mobile station relay station resource information storage unit 270 Communication unit 300 Relay station 311 Base station relay station resource allocation response reception unit 312 Base station side relay resource allocation response reception unit 313 Mobile station side relay resource allocation response reception unit 314 Radio signal reception unit 315 Mobile station relay station resource allocation response Reception unit 321 Data extraction unit 322 Display control unit 323 Transmission control unit 324 Inventory data acquisition unit 331 Base station relay resource allocation request transmission unit 332 Base station side relay resource allocation request transmission unit 333 Mobile station side relay resource allocation request transmission unit 334 Radio signal transmitter 335 Mobile station relay station resource Allocation request transmission unit 351 Base station relay station resource information storage unit 352 Base station side relay resource information storage unit 353 Mobile station side relay resource information storage unit 354 Data storage unit 355 Mobile station relay station resource information storage unit 356 Stock data storage Part 360 Display part

Claims (14)

A wireless communication device existing between a base station and a mobile station,
The wireless communication device relays a first channel set between the base station and the mobile station, sets a second channel between the base station and the wireless communication device,
A resource allocation signal receiving unit that receives resource information indicating a resource between the base station and the wireless communication device from the base station by a radio signal for allocation of resources used by the second channel;
A resource information storage unit for storing the resource information received by the resource allocation signal receiving unit;
A wireless communication device. Allocation of relay resources on the base station side that are resources used by radio signals transmitted and received between the base station and the radio communication device among radio signals transmitted and received between the base station and the mobile station For this purpose, a base station side relay resource allocation signal receiving unit that receives base station side relay resource information indicating the base station side relay resource from the base station by a radio signal;
A base station side relay resource information storage unit for storing the base station side relay resource information received by the base station side relay resource allocation signal receiving unit;
The wireless communication apparatus according to claim 1, further comprising: Allocation of relay resources on the mobile station side that are resources used by radio signals transmitted / received between the mobile station and the radio communication device among radio signals transmitted / received between the base station and the mobile station Therefore, a mobile station side relay resource allocation signal receiving unit that receives mobile station side relay resource information indicating the mobile station side relay resource from the base station by a radio signal;
A mobile station side relay resource information storage unit for storing the mobile station side relay resource information received by the mobile station side relay resource allocation signal receiving unit;
The wireless communication apparatus according to claim 2, further comprising: A radio signal receiver for receiving radio signals;
Data extraction for extracting data from the radio signal when the resource used by the radio signal received by the radio signal receiving unit is indicated by the resource information stored in the resource information storage unit And
A data storage unit for storing the data extracted by the data extraction unit;
The wireless communication device according to claim 3, further comprising: When the resource used by the radio signal received by the radio signal receiving unit is indicated by the base station side relay resource information stored in the base station side relay resource information storage unit, A radio signal transmission unit for transmitting a radio signal using the mobile station side relay resource indicated by the mobile station side relay resource information stored in the mobile station side relay resource information storage unit;
The wireless communication apparatus according to claim 4, further comprising: The radio signal transmitter is
When the resource used by the radio signal received by the radio signal receiving unit is indicated by the mobile station side relay resource information stored in the mobile station side relay resource information storage unit, Transmitting a radio signal using the base station side relay resource indicated by the base station side relay resource information stored in the base station side relay resource information storage unit;
The wireless communication apparatus according to claim 5. A display unit;
A display control unit that extracts the data from the data storage unit and displays the extracted data on the display unit;
The wireless communication apparatus according to claim 4, further comprising: The data extraction unit
Further extracting display control information for controlling display from the wireless signal;
The data storage unit
Further storing the display control information extracted by the data extraction unit;
The display control unit
Extracting the data from the data storage unit based on the display control information stored by the data storage unit, and displaying the extracted data on the display unit;
The wireless communication apparatus according to claim 7. In order to allocate resources between mobile station relay stations, which are resources used by radio signals transmitted and received between the mobile station and the wireless communication device, between the mobile station relay stations indicating the resources between the mobile station relay stations A mobile station relay station resource allocation signal receiving unit that receives resource information from the base station by radio signal; and
A mobile station relay station resource information storage unit that stores the mobile station relay station resource information received by the mobile station relay station resource allocation signal receiver;
The wireless communication apparatus according to claim 4, further comprising: A radio signal transmitting unit that transmits a radio signal using the mobile station relay station resource indicated by the mobile station relay station resource information stored in the mobile station relay station resource information storage unit;
A transmission control unit that extracts the data from the data storage unit and transmits the extracted data to the radio signal transmission unit by a radio signal;
The wireless communication device according to claim 9, further comprising: A radio signal transmission unit capable of transmitting a radio signal using the resource indicated by the resource information stored by the resource information storage unit;
An inventory data acquisition unit for acquiring inventory data in the vending machine from the vending machine;
An inventory data storage unit that stores the inventory data acquired by the inventory data acquisition unit;
A transmission control unit for extracting the inventory data stored by the inventory data storage unit and transmitting the extracted inventory data to the wireless signal transmission unit by a wireless signal;
The wireless communication apparatus according to claim 1, further comprising: The charge for communication performed by the wireless communication device is as follows:
Radio signal transmission using the base station side relay resource by the radio communication device, reception of a radio signal using the base station side relay resource, transmission of a radio signal using the mobile station side relay resource, and the mobile station Calculated based on information on at least one of reception of radio signals using the side relay resource,
The wireless communication apparatus according to claim 9. A base station that allocates resources between base station relay stations, which are resources used by radio signals transmitted and received between the relay station and the own apparatus, which are different from the radio signals transmitted and received between the own apparatus and the mobile station Inter-relay station resource allocation processing unit;
A base station relay station resource information storage unit that stores base station relay station resource information indicating the base station relay station resource allocated by the base station relay station resource allocation processing unit;
A base station relay station resource allocation signal transmitter for transmitting the base station relay station resource information indicating the base station relay station resource to the relay station by a radio signal;
Equipped with a,
The relay station relays a first channel set between the base station and the mobile station, sets a second channel between the base station and the relay station,
The base station relay station resource allocation signal transmitter transmits the base station relay station resource information to the relay station for allocation of resources used by the second channel.
base station. A wireless communication system having a base station and a relay station,
The base station
Allocation of resources between base station relay stations, which are resources used by radio signals transmitted and received between the relay station and the base station, which are different from radio signals transmitted and received between the base station and the mobile station A base station relay station resource allocation processing unit to perform,
A base station relay station resource information storage unit that stores base station relay station resource information indicating the base station relay station resource allocated by the base station relay station resource allocation processing unit;
A base station relay station resource allocation signal transmitter for transmitting the base station relay station resource information indicating the base station relay station resource to the relay station by a radio signal;
With
The relay station is
Relay a first channel set between the base station and the mobile station, set a second channel between the base station and the relay station,
Inter-base station inter-station resource allocation for receiving the inter-base-station inter-station resource information indicating the inter-base-station inter-station resource by radio signal from the base station for allocation of resources used by the second channel A signal receiver;
A base station relay station resource information storage unit that stores the base station relay station resource information received by the base station relay station resource allocation signal receiver;
A wireless communication system.

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