JP2007531439A - Method for allocating radio resources for WLAN - Google Patents

Abstract

  The present invention relates to a method for allocating radio resources in a plurality of radio stations (AP, N1, N2, MS1, MS2) of a radio communication system. In the wireless communication system, messages are transmitted between the wireless stations (AP, MS2) by message transfer via the other wireless stations (N1, N2). Different classes of functions can be used. A wireless device (BS) receives a request message for requesting radio resource allocation for transmission or transfer of messages from the plurality of wireless stations. According to the present invention, the wireless device (BS) requests allocation of radio resources by providing information related to allocation by at least one message (RESSOURCE MESSAGE) in consideration of the classes of the plurality of radio stations. Allocation of radio resources to a plurality of existing radio stations is performed.

Description

  The present invention relates to a method for allocating radio resources in a plurality of radio stations of a radio communication system, wherein a plurality of messages are transmitted between radio stations by transfer or routing of messages via other radio stations. The invention further relates to a radio device for implementing the method.

  In wireless communication systems, messages such as signaling messages or valid data messages with voice data, image information, video information, SMS (short message service), MMS (multimedia message service) or other data use electromagnetic waves. Thus, the data is transmitted between the transmitting station and the wireless receiving station via the wireless interface. The radio station in this case is various subscriber-side radio stations or network-side radio stations, for example, radio access points, repeaters, or base stations, depending on the specific configuration of the radio communication system. In the mobile radio communication system, at least a part of the subscriber side radio stations are mobile radio stations. The electromagnetic waves are radiated using a carrier frequency within a frequency band provided for each system.

  Mobile radio communication systems are often cellular systems, for example compliant with the Global System for Mobile Communication (GSM) standard or the Universal Mobile Telecommunications System (UMTS) standard, a plurality of base stations, facilities for monitoring and controlling those base stations and further It is constructed by a network infrastructure consisting of devices on the network side.

  In addition to these hierarchically organized (ie, non-local) hierarchical cellular radio networks, a wireless local network with a radio coverage area that is usually clearly spatially limited (usually WLAN (Wireless Local Area Network) exists. A cell covered by a WLAN wireless access point (AP) has a diameter of several hundred meters, which is smaller than a normal mobile radio cell. Examples of various standards for WLANs include Hyper LAN, DECT, IEEE 802.11, Bluetooth and WATM.

  A 2.4 GHz frequency region that is not normally licensed for WLAN is used. The data transmission rate is set up to 11 Mbit / s. Future WLANs can operate in the 5 GHz region and achieve data rates in excess of 50 Mbit / s. That is, the WLAN subscriber uses a data rate that is much higher than that provided by the third generation of mobile radio. Thus, especially for the transmission of large volumes of data associated with Internet access, access to the WLAN for high bit rate connections is advantageous.

  Via a WLAN wireless access point it is possible to form a connection to another communication system, for example the Internet. On the other hand, a WLAN subscriber side radio station communicates directly with a radio access point or, when the radio station is far away, transfers a message between the subscriber side radio station and the radio access point. Communicates via wireless stations. Usually nearby radio resources that can be used are either divided into WLAN radio stations or divided into WLAN radio stations. This division is performed as follows, for example. That is, the radio station that transfers the first message can use most of the radio resources, whereas the radio station that transfers the second message can hardly use the radio resources. This results in traffic congestion during message transmission, overloading of the second transmitting radio station, and ultimately message loss.

  An object of the present invention is to effectively allocate radio resources in a plurality of radio stations of a radio communication system in which message transmission between a plurality of radio stations is performed by routing of the message via other radio stations. Is to provide a method. Furthermore, the provision of a wireless device for allocating a plurality of wireless resources for implementing this method is another problem.

  The object is solved by a method according to the characterizing part of claim 1 and a wireless device according to the characterizing part of claim 10.

  Advantageous embodiments and developments are described in the dependent claims.

  The method according to the invention is used for radio resource allocation in a plurality of radio stations of a radio communication system. In a wireless communication system, message transmission between a plurality of wireless stations is performed by routing the message via other wireless stations. There are various classes of radio stations regarding their function in message transmission. In the wireless device, a request message for requesting radio resource allocation for message transmission or routing is received from the radio station. According to the present invention, a radio apparatus allocates radio resources to a radio station that has requested allocation of radio resources in consideration of the class of the radio station. In addition, the wireless device provides at least one message regarding the assignment.

  Messages are transmitted exclusively via radio between radio stations in a radio communication system. In other words, there is no infrastructure for wired transmission of messages. The radio station in the radio communication system is, for example, a WLAN radio station, specifically a radio station in the form of a subscriber-side radio station, a relay station, a radio access point, or the like. The wireless device is, for example, a base station of a cellular wireless communication system. Each radio station of a radio communication system participating in message transmission via radio belongs to one or more classes. This class relates to the function of the radio station in message transmission here. However, it is possible for radio stations configured identically to belong to different classes. If a wireless station belongs to multiple classes, the wireless device can identify which class the inquiry is being made in according to the radio resource in the inquiry of this wireless station. It is also possible to change the degree of radio station belonging to one or more classes with time.

  The radio resources allocated to the radio station by the radio device are, for example, one or more radio frequencies, such as OFDM bands and / or time slits and / or codes and / or spatial directions. Particularly advantageous is the assignment of a combination of time slit and radio frequency. The allocation of radio resources by the radio device is performed in consideration of the class of the radio station. This can be achieved, for example, by assigning radio resources according to different classes of priorities and priority orders. Thereby, for example, a radio station with a lower priority class is assigned only when there is no higher priority class radio station. This priority consideration can be limited to predetermined radio resources. Accordingly, for example, different priorities may be given for each radio resource, or predetermined priorities may be given only to predetermined radio stations, for example, only to radio stations in a predetermined area. After the assignment is made, the wireless device provides information regarding the assignment. The transmission of the message with the information on the assignment may be performed from the wireless device to all the wireless stations, only the wireless station to which the radio resource is assigned, and / or another succeeding wireless station with the information on the assignment. You may narrow down only to the radio station to transfer.

  According to the configuration of the present invention, the message received from the radio station by the first class radio station is transferred to another radio station that transfers the message. Here, for example, there is a repeater or relay station that does not bring a new message to the wireless communication system but transfers a message already brought from another wireless station to the wireless communication system. The first class wireless station is a network-side wireless station.

  According to another configuration of the invention, a message received by a second class radio station from a radio station is forwarded to the radio station addressed by the respective message. Here, for example, a repeater or a relay station that does not bring a new message to the radio communication system but transfers a message already brought from another radio station to the radio communication system can be mentioned. The second class radio station is a radio station on the network side in particular.

  One radio station may belong to first and second class radio stations. Thus, the class membership for a given message depends on which radio station it determines the message it receives and forwards.

  According to another configuration of the present invention, a message received by the third class wireless station from another communication system is transferred to the wireless station to which the message is to be transferred. This third class wireless station is, for example, a WLAN wireless access point with a function of connecting to the Internet. The other communication system may be configured as a wireless communication system. The third class radio station may consist of a radio station on the network side in particular.

  According to another configuration of the invention, a message received by a fourth class radio station from another radio communication system is forwarded to the radio station addressed by the respective message. The fourth class wireless station is, for example, a WLAN wireless access point with a function of connecting to the Internet. The other communication system may be configured as a wireless communication system. The fourth class of radio stations may in particular consist of network side radio stations.

  One radio station may belong to third and fourth class radio stations. Therefore, the class membership of a given message depends on which radio station determines the message to be received from another communication system and transferred from itself.

  According to another embodiment of the invention, a fifth class radio station transmits a unique message to the radio station. The unique message is a message newly transmitted from the wireless station to the wireless communication system, not a message received for transfer from another wireless station. The fifth class radio station may be a subscriber-side radio station in particular.

  Advantageously, the class consideration in the allocation of radio resources is performed as follows. That is, time slots are assigned to one radio frequency in the following order, that is, in the order of the first class first and then in the order of the third class, in accordance with the priority of the radio stations. In this case, all or at least some radio stations of the first and third classes use the same radio frequency. Advantageously, a first class of radio stations is processed in the allocation of radio resources. This means a radio station that transfers a message that already exists in the radio communication system. On the other hand, the low priority third class radio station transmits a new message to the radio communication system. As a result, a message newly transmitted to the wireless communication system is disregarded with respect to a message that already exists in the wireless communication system.

  Advantageously, the class consideration in the allocation of radio resources is performed as follows. That is, time slots are assigned to one or more radio frequencies in the following order, ie, first in the second and fourth classes, and then in the order of the fifth class, according to radio station priorities. To be done. In this case, both the second and fourth classes, i.e. the two classes whose radio stations forward messages to the address of the message, receive high priority. A distinction between the priorities of these two classes is also possible. New transmissions of messages to the wireless communication system also receive a low priority. It is also possible to combine the priorities of the second, fourth and fifth classes described here with the priorities of the first and third classes described above. Advantageously, the one or more radio frequencies divided under the second, fourth and fifth class radio stations are divided into radio frequencies divided under the first and third class radio stations. May be a different radio frequency.

  According to the configuration of the present invention, the radio stations of the radio communication system communicate with each other under the application of the first radio interface, and further communicate with the radio apparatus under the application of the second radio interface. The first wireless interface may be a WLAN wireless interface, for example, and the second wireless interface may be a cellular wireless interface.

  A wireless device for allocating radio resources to a radio station of a radio communication system according to the present invention, means for receiving and processing a request message for a radio resource allocation request for transmitting or transferring a message from the radio station, and Means for allocating radio resources to a radio station that has requested allocation of radio resources under consideration of the class of radio stations, and means for generating and transmitting at least one message with information on radio resource allocation Have.

  The radio device according to the invention is particularly suitable for carrying out the method according to the invention described above, which also applies to the configuration and the embodiment. For this, the wireless device may also have other suitable means. The wireless device according to the present invention can also be realized by a plurality of interconnected devices each having means.

  Hereinafter, the present invention will be described in detail based on examples.

FIG. 1 is a diagram showing a wireless communication system, FIG. 2 is a diagram schematically showing the contents of a message transmitted by a method according to the present invention, and FIG. 3 is a diagram of a base station according to the present invention. It is the figure which represented the structure roughly.

  FIG. 1 shows a WLAN. This WLAN includes a wireless access point AP, two mobile stations MS1 and MS2, and two relay stations N1 and N2. The wireless access point AP has a function of connecting to the Internet INTERNET. The relay stations NA and N2 are fixed radio stations on the network side, and they are used for message transfer between the mobile stations MS1 and MS2 and the radio access point AP. Additionally or alternatively, this message transfer may be performed partly or completely by a fixed or mobile radio station on the subscriber side. This WLAN was not shown in FIG. 1 for the sake of clarity, but may include additional wireless access points, subscriber-side wireless stations and relay stations other than those shown there.

  Message transmission between the WLAN radio stations AP, MS1, MS2, N1, and N2 is performed using a WLAN radio interface. When a subscriber-side radio station exists within the radio range of the radio access point AP (for example, the mobile station MS1 in FIG. 1), this radio station can directly communicate with the radio access point AP. When the subscriber-side radio station (for example, the mobile station MS2 in FIG. 1) is further away, message transmission between the subscriber-side radio station and the radio access point AP is performed by the relay station. Therefore, a message from the wireless access point AP to the mobile wireless station MS2 can be transmitted from the wireless access point AP to the relay station N1. The relay station N1 transfers this message to the relay station N2, and the relay station N2 transfers this message to the mobile station MS2.

  A first radio frequency may be used for WLAN. This first radio frequency is used for communication between the relay stations N1 and N2, and further used for communication between the relay stations N1 and N2 and the radio access point AP. In addition, three additional radio frequencies can be used, which are used for communication between the relay stations N1 to N2 and the mobile stations MS1 to MS2. These three additional radio frequencies are thereby used whenever one subscriber radio station is involved in the communication.

  The WLAN radio stations AP, MS1, MS2, N1, N2 exist in one radio cell (depicted in a cloud) of one base station BS of a cellular radio communication system compliant with, for example, the UMTS standard. Yes. Further components of this cellular radio communication system are not shown here in order not to impair the visibility of the figure. The wireless access point AP and the relay stations N1, N2, and possibly the mobile stations MS1, MS2 are also communicated with the base station BS using the cellular radio interface. For communication using the cellular radio interface, a radio frequency lower than the radio frequency for communication in the WLAN is used, so that the radio access point AP and the relay stations N1, N2 and possibly the mobile stations MS1, MS2 It communicates directly with the base station BS without transferring messages. If the equipment of the subscriber-side radio station cannot accept communication with the base station BS using the cellular radio interface, communication between each subscriber-side radio station and the base station BS This can be done via a relay station that currently exists near the station. Thereby, for example, when the mobile station MS2 cannot communicate with the base station BS using the cellular radio interface, the mobile station MS2 communicates with the base station BS via the relay station N2.

  When the mobile stations MS1 or MS2 intend to transmit a message, these mobile stations request radio resources for this transmission. The message intended for transmission by the mobile stations MS1 and MS2 consists of an inquiry related to data from the Internet INTERNET. The mobile stations MS1 and MS2 transmit a request message RR-MS (RR: resource request) for radio resource allocation. This request message RR-MS is transmitted directly to the base station BS, or transmitted to the relay station N2 as in the case of the mobile station MS2, or to the radio access point AP as in the case of the mobile station MS1. And transmitted to the base station BS by the wireless access point AP. For transmission of the request message RR-MS to this relay station or wireless access point, the subscriber-side radio station uses one of three radio frequencies that can be used for communication by the subscriber-side radio station. .

  When the relay station N2 receives from the mobile station MS2 a message to be transferred to the wireless access point AP via the relay station N1, the relay station N2 transmits a request message RR-N-N to the base station BS. Thereby, the base station BS requests radio resource allocation to the relay station N2 for message transmission to other relay stations. In this case, the request message RR-N-N may include identification information of the relay station N1. However, the base station BS can also estimate the following from this request message RR-N-N. That is, it is possible to estimate that radio resources are required by the relay station N2 for message transmission to other relay stations.

  When the relay station N2 receives a message to be further transferred from the relay station N1 to the mobile radio station MS2, the relay station N2 transmits a request message RR-N-MS to the base station BS. From this request message RR-N-MS, the base station BS identifies that the relay station N2 needs radio resources for transferring the message to the subscriber-side radio station. In this case, the request message RR-N-MS may include identification information of the mobile station MS2.

  Accordingly, the relay station N1 also transmits a request message RR-N-N to the base station BS in the following case. That is, when a message from the wireless access point AP to the relay station N2 or a message from the relay station N2 to the wireless access point AP is transferred, the request message RR-N-N is transmitted to the base station BS. If the request message RR-N-N transmitted from the relay stations N1 and N2 does not contain any identification information of the radio station to which the message is to be transferred, the message should be transferred to the relay stations N1 to N2. Or whether it should be transferred to the wireless access point AP. This is because the same radio frequency is used for communication between the relay stations N1 and N2 and communication between the relay station N1 and the wireless access point AP.

  If the message received from the Internet INTERNET to the mobile station MS1 is available from the wireless access point AP, the wireless access point AP transmits a request message RR-AP-MS. The base station BS estimates the following from this request message RR-AP-MS. That is, it is estimated that the message should be transmitted directly from the wireless access point AP to the subscriber-side wireless station and that resources are required for this transmission. The request message RR-AP-MS may include identification information regarding the mobile station MS1. When a message received from the Internet INTERNET by the wireless access point AP is addressed to the mobile station MS2, the request message RR-AP-N is transmitted to the base station BS with the following contents: . In other words, depending on the case, the wireless access point AP is performed with content that requires a wireless resource for transmitting a message to the relay station under the reference of the identification information of the relay station N1.

  Each of the request messages RR-MS, RR-NN, RR-N-MS, RR-AP-MS, and RR-AP-N described above is data relating to the size of one or more messages to be transmitted. May be included. As a result, the base station BS can estimate how much radio resources should be allocated to each radio station.

  Accordingly, there are request messages RR-MS, RR-NN, RR-N-MS, RR-AP-MS, and RR-AP-N. The difference between these request messages is due to the function of the WLAN radio stations AP, MS1, MS2, N1, and N2 during message transmission. That is, there are various functional classes regarding the functions of the WLAN radio stations AP, MS1, MS2, N1, and N2 when transmitting messages. The request message RR-MS comes from a subscriber radio station that sends a new message rather than forwarding any message. The request message RR-N-N comes from a base station that forwards messages received from other base stations or other subscriber-side radio stations or other radio access points AP to other base stations. The request message RR-N-MS comes from a relay station that transfers a message received from another base station or a wireless access point AP to the wireless station addressed by the message. The request message RR-AP-MS comes from a wireless access point AP that transfers a message for a subscriber-side radio station received from another communication system to the subscriber-side radio station. The request message RR-AP-N comes from a wireless access point AP that transfers a message received from another communication system to the relay station for the message transfer.

  To receive these request messages, the base station BS allocates radio resources to the WLAN radio stations AP, MS1, MS2, N1, and N2 at regular time intervals. In determining which radio resource to assign to which radio station, the base station BS considers the aforementioned class of radio station from which the request message is received. After the decision regarding the assignment is made, the base station BS sends a message that brings information to the radio stations involved in the assignment.

  FIG. 2 shows the structure of an information message RESOURCE MESSAGE transmitted from such a base station BS. The first part PREAMBLE of this information message RESSOURCE MESSAGE represents a period starting with the allocation of a new radio resource. The following part provides the radio station with information about which radio resources are allocated. The base station BS transmits the message RESSOURCE MESSAGE to all relay stations and radio access points to which radio resources are allocated. On the other hand, the message RESSOURCE MESSAGE may be broadcast from the base station BS for each broadcast. A subscriber radio station to which radio resources are allocated receives this message RESOURCE MESSAGE directly from the base station BS, or receives it by forwarding this message RESOURCE MESSAGE, or assigns it to itself by a relay station or radio access point AP. Received from information about assigned radio resources.

  The first radio frequency F1 is used by the relay stations N1 and N2 and the radio access point AP. That is, it is used for all message transmissions or transfers in the WLAN where no subscriber-side radio station is involved. For this first radio frequency F1, the base station BS assigns time slits to the radio stations N1, N2, AP. This allocation is performed depending on the received request message or depending on the class of the radio station requesting radio resources. The highest priority when assigning the time slit to the first radio frequency F1 is given to the relay station that transmitted the request message RR-N-N. Following that is the access point that sent the request message RR-AP-N. Therefore, the allocation of the time slit for the first radio frequency F1 at the radio access point AP is performed only when each relay station that requested the allocation of radio resources is allocated at the scale requested by itself. . The reason for this approach is that the messages to be transferred by the relay station are already coming from other wireless stations in the WLAN and hence unnecessary delay due to being quick, i.e. staying with the relay station for a long time. Without, it should be transmitted to the addressed radio station. However, the message transmitted by the wireless access point using the resource allocated based on the request message RR-AP-N newly arrives in the WLAN from the wireless access point AP. The preferential treatment of messages newly transmitted in the WLAN with respect to the messages already existing in the WLAN increases the number of messages to be transferred in the current WLAN, and accordingly increases the transmission time during message transmission. Cause stagnation, obstruction, etc.

  The allocation of time slots for the further three radio frequencies F2, F3, F4 is performed independently of the time slit allocation for the first radio frequency F1. These additional radio frequencies are used between the subscriber-side radio station and the relay station or radio access point. The base station BS also takes into account the prioritization of the radio stations when allocating time slots for these further radio frequencies F2, F3, F4. The maximum priority is given to the relay station requesting direct message transfer to the subscriber-side radio station at the time of resource allocation, that is, the relay station transmitting the request message RR-N-MS. The second priority is assigned to the wireless access point that is requesting the subscriber-side wireless station to transfer the message directly, that is, the wireless access point that is transmitting the request message RR-AP-MS. Furthermore, in the resource allocation between the radio stations belonging to the request messages RR-N-MS and RR-AP-MS, they are not distinguished regarding their priorities, i.e. both are received with the highest priority. Is also possible. The lowest priority is assigned to the subscriber radio station that transmitted the request message RR-MS. These include when a time slit is still obtained after a time slit is assigned to the relay station that issued the request message RR-N-MS and the wireless access point that issued the request message RR-AP-MS. Only time slits for radio frequencies F2, F3, F4 are assigned.

  The prioritization when assigning time slits for the further radio frequencies F2, F3, F4 mentioned above is preferably performed under the following conditions. That is, a condition that a time slit is assigned to only one of the radio frequencies F2, F3, and F4 is assigned to each cluster composed of one relay station and a plurality of subscriber-side radio stations associated therewith. And done. Steht zB If a frequency band that is divided into multiple OFDM bands can be used for the communication of the subscriber radio station, this OFDM band can be divided among the various clusters that require radio resources. it can. Time slits are assigned to the radio stations of the clusters of their respective cluster frequencies as described above.

  Embodiments relating to prioritization of radio stations when allocating radio resources as described above are particularly advantageous for radio stations where their signals may interfere undesirably. Thereby, for example, the same time slit can be assigned to the mobile radio station MS2 and the access point AP with respect to the same frequency of the three radio frequencies F2, F3, and F4. This is because signals from the mobile station MS2 and the wireless access point AP do not interfere based on the interval between the mobile station MS2 and the access point AP. If the base station BS knows the spacing between the WLAN radio stations AP, MS1, MS2, N1, N2 or the network topology of the WLAN, this base station may cause the same radio resource allocation to cause transmission failures. Prioritization as described above can be executed for each wireless station. The method as described above is carried out in a limited geographical area in such a case. On the other hand, when the base station BS does not know the interval between the WLAN radio stations AP, MS1, MS2, N1, and N2, as described above, all the WLAN radio stations AP, MS1, MS2, N1, and N2 Prioritization is carried out.

  In the case where multiple OFDM bands are subdivided into clusters, it is possible to assign the same OFDM band to clusters that are sufficiently separated from each other. Within one cluster, multiple time slits are assigned with priority for relay stations or wireless access points, while continuing to be assigned to subscriber-side wireless stations.

  FIG. 3 shows a schematic structure of a base station BS according to the present invention. The antenna A is used for message transmission / reception via the cellular radio interface. Request messages received via this antenna A are supplied to means RECEIVE RR for their processing and analysis. In order to determine the radio resource allocation in the means DETERMINE ALLOCATION, the information relating to the assignment according to the aforementioned method contained in the request message is transferred from the means RECEIVE RR. After the assignment decision has been made, the information about the radio station is transferred to means TRANSMIT RESOURCE MESSAGE which creates a message to the radio station and transmits it via antenna A.

Diagram showing wireless communication system Figure schematically representing the content of a message sent by the method according to the invention The figure which represented the structure of the base station by this invention roughly

Claims (10)

A method for allocating radio resources in a plurality of radio stations (AP, N1, N2, MS1, MS2) of a radio communication system, comprising:
In the wireless communication system, messages are transmitted between the wireless stations (AP, MS2) by message transfer via other wireless stations (N1, N2).
Different classes regarding their function in message transmission of the plurality of radio stations (AP, N1, N2, MS1, MS2) can be used,
A request message (RR-MS, RR-N-) for requesting radio resource allocation for transmission or transfer of messages from the plurality of radio stations (AP, N1, N2, MS1, MS2) N, RR-N-MS, RR-AP-MS, RR-AP-N)
The wireless device (BS) provides information on allocation of radio resources by providing information on allocation by at least one message (RESSOURCE MESSAGE) in consideration of the classes of the plurality of radio stations (AP, N1, N2, MS1, MS2). A method of allocating radio resources to a plurality of radio stations (AP, N1, N2, MS1, MS2) requesting allocation.   The first-class radio station (N1, N2) transfers a message received from the radio station (AP, MS2) to another radio station (N2, N1) for message transfer. Method.   Method according to claim 1 or 2, wherein the second class of radio stations (N2) forwards messages received from the radio station (N1) to the radio station (MS2) to which the respective message is addressed. .   The method according to any one of claims 1 to 3, wherein the third class radio station (AP) transfers a message received from another communication system to the radio station (N1) to which the message is to be transferred.   The fourth class wireless station (AP) transfers a message received from another communication system (INTERNET) to the wireless station (MS1) to which each message is addressed. The method according to claim 1.   The method according to any one of claims 1 to 5, wherein the fifth class of radio stations (MS1, MS2) is sending a unique message to the radio stations (N2, AP).   Consideration of classes when allocating radio resources is as follows: radio stations (N1, N2) in the order of time slots first for the first radio frequency (F1) and then for the third class. , AP). The method according to claim 2 or 4, wherein the method is performed according to the prioritization.   Class considerations in radio resource allocation are such that for one or more radio frequencies (F2, F3, F4), the time slots are first such as the second and fourth classes and then the fifth class. The method according to claim 3, 5 or 6, wherein the method is performed in order according to the priorities of the radio stations (N2, AP, MS1, MS2).   A plurality of radio stations (AP, N1, N2, MS1, MS2) of the radio communication system communicate with each other using a first radio interface and further communicate with a radio apparatus (BS) using a second radio interface. 9. A method according to any one of claims 1 to 8, wherein the method is communicated. A radio apparatus for allocating radio resources to a plurality of radio stations (AP, N1, N2, MS1, MS2) of a radio communication system,
In the wireless communication system, messages are transmitted between the wireless stations (AP, MS2) by message transfer via other wireless stations (N1, N2).
Various classes relating to their function in message transmission of the plurality of radio stations (AP, N1, N2, MS1, MS2) can be used,
Request messages (RR-MS, RR-N-N, RR-N-MS) for requesting allocation of radio resources for transmission or transfer of messages from the plurality of radio stations (AP, N1, N2, MS1, MS2) , RR-AP-MS, RR-AP-N) in a wireless device of the type having means for receiving and processing,
Radios to a plurality of radio stations (AP, N1, N2, MS1, MS2) that request allocation of radio resources in consideration of the classes of the plurality of radio stations (AP, N1, N2, MS1, MS2) Means for allocating resources;
A radio apparatus comprising means (SEND RESOURCE MESSAGE, A) for creating and transmitting at least one message (RESOURCE MESSAGE) using information on radio resource allocation.

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