KR100326483B1 - Method, mobile station and base station for packet oriented information transmission - Google Patents

Abstract

The present invention relates to a packet information transmission method, a mobile station and a base station. According to the present invention, in the packet-based time threshold information transmission method through a radio interface between a base station and a mobile station in a TDMA mobile communication system during a logic connection, the mobile station having a service profile for time threshold information is assigned only to the service profile. Requests for uplink radio technical resources in the upstream channel portion are transmitted upstream without prior assignment of the correct transmission time point by the base station. The base station receives and evaluates the request and then executes a modified allocation of radio technical resources for uplink signal transmission to the mobile station. It is highly desirable to use in TDD-mobile radio systems with TDMA / CDMA-subscriber separation.

Description

METHOD, MOBILE STATION AND BASE STATION FOR PACKET ORIENTED INFORMATION TRANSMISSION}

The mobile communication system serves to transmit data between the transmitting radio station and the receiving radio station through the air interface with the help of electromagnetic waves, and generally one of the radio stations is not stationary. An example for a mobile communication system is the known GSM-Mobile Wireless Network, where one channel is provided, each formed by a narrowband frequency range and a time slot, for the transmission of subscriber signals. Since the frequency and time of the in-channel subscriber signal are separated from the rest of the subscriber signal, the receiving radio station detects data of this subscriber signal. The formation of time slots provides a time division multiple-subscriber separation and thus a time division multiple access (TDMA) mobile communication system.

The network side radio station of a mobile communication network is a base station that communicates with a mobile station via an air interface. The transmission from the mobile station to the base station is indicated upward, and the transmission from the base station to the mobile station is indicated downward. The frequency channel is formed by at least one time slot per time division multi-frame.

The plurality of time division multi-frames here form a macro frame. In addition, the carrier frequency and frequency jumping sequence form a frequency channel.

Concepts based on connection-oriented concepts and logic connections can be inferred for data transfer between two communication terminals. In connection-oriented data transfer, physical resources between two communication terminals are provided during the entire time of data transfer.

No continuous provision of physical resources is required when transferring data over logic connections. An example of such data transmission is packet data transmission. Here a logical connection exists between the two communication terminals for the entire data transfer time, but the physical resource is provided only during the original transfer time of the data packet. This method is based on the data being sent in short data packets, and long pauses can occur between the data packets. In the pauses between data packets, physical resources may be provided for other logical connections. Regarding logic connections, physical resources are omitted.

The packet data transmission method known from the German patent application DE 44 02 903 A1 is particularly provided for communication systems with limited physical resources. However, it was developed for the transmission of information rather than a time threshold, in which the information transmission delay time in particular upward is not appropriate. The base station of the mobile communication system responds to the time threshold information arriving at the network side by corresponding division of uplink radio technical resources. This is impossible in the upward direction. This is because the allocation of radio technical resources is performed on the network side, but the awareness of the presence of time critical information exists locally at the mobile station. Requests for allocation of radio technology resources to establish a logical connection are sent through inactive mobile stations in the access channel, which are allocated to all mobile stations in the radio cell for this purpose. In WO-A-97 19525, a method of access to a wireless system is known in which a mobile station provides a different number of channels in order of priority for selective access.

The present invention provides a method and apparatus for packet-based transmission of information over a wireless interface between a base station and a mobile station in a TDMA mobile communication system, in particular for GPRS-packet data service for time-critical information in a GSM-mobile wireless network. It is about.

1 is a block circuit diagram of a TDMA mobile communication system for packet data transmission;

2 is a time division multiplex-subscriber separation channel,

3 is a schematic diagram of a radio block type,

4 is a schematic diagram of a configuration of an access radio block;

5 is a schematic diagram of a configuration of an upward normal radio block;

6 is a schematic diagram of a configuration of a downlink normal radio block;

7 is a schematic diagram of the use of multiple frequency channels of a mobile station,

8 is a schematic diagram of the progress of time threshold information transmission;

9 is a schematic diagram of an air interface for TDMA / CDMA-transmission,

10 is a block circuit diagram of a mobile station,

11 is a block circuit diagram of a base station.

It is an object of the present invention to provide a method and apparatus for packetized information transmission that is more suitable for time critical applications. This object is achieved by a method having the features of claims 1 or 10 and an apparatus having the features of claim 17. Preferred embodiments of the invention are covered in the dependent claims.

In the method of packet transmission of time critical information over an air interface between a base station and a mobile station in a TDMA mobile communication system, according to the present invention, a service profile for time critical information and a channel portion allocated only to the service profile during a logical connection of the mobile station according to the invention. In Rx, requests for uplink radio technical resources are sent upstream without prior assignment of the correct transmission time point by the base station. The base station receives and evaluates the request and then performs a modified allocation of radio technical resources for effective signal transmission to the mobile station upwards.

The mobile station is therefore no longer dependent on the assignment of the base station with respect to the frequency channel for signaling of resource inquiry. The mobile station can determine for itself a resource query time. The delay until the uptake of uplink radio technical resources for time threshold information is reduced.

According to a preferred refinement of the invention, the first radio block is synchronized and transmitted in a time slot of the radio interface such that the first radio block reaches the base station at a predetermined point in time slot and has at least one request in the same time slot. A second radio block of is transmitted, and the second radio block can be evaluated separately from the first radio block. Thus, the request may be sent further to the first radio block and does not form additional radio technical resources. In particular, space remains for the second radio block in the time slot with the shortened access block.

Corresponding partitioning of time slots allows for greater amounts of data transmission and thus better use of radio technical resources. Thus, time slots may not only be assigned to mobile stations, but may also be used with each other regardless of the number of mobile stations. By transmitting side synchronization, it is ensured that the radio blocks do not arrive simultaneously in the time slots and can therefore be evaluated separately.

Radio blocks transmitted in one time slot are provided with a special time slot having the same length by further formation-or with a shortened number of radio blocks accordingly-representing different types of radio blocks-and thus of a mobile communication system The existing time slot structure is used. At the same radio block length, a number of standardized block lengths are introduced that fill the time slots so that unused transition times are as small as possible and the time slots are filled with two, three or more radio blocks as needed. At this time, it is preferable that the arrival time point of the first radio block is the beginning of the time slot. This makes better use of the duration of the time slot. Thus, a time compensation value, timing advance, which has already been determined, can be accommodated and no additional computational cost is required.

According to an alternative preferred refinement of the invention a request having an access radio block is transmitted. The access block is typically used for setting timing advance and transmitted at regular intervals from the mobile station. In accordance with the present invention, such access radio blocks are provided with information on requests for uplink radio technical resources at no additional cost for signaling.

If a request of this type is selected, it is desirable that a larger number of time slots are provided (e.g. than in GPRS today) for the access radio block. Thus, other signaling possibilities are allowed and the delay to uplink radio resource allocation is shortened.

According to an alternative third refinement of the invention, requests are also sent in time slots that are not provided for packet data transmission. In the mobile communication system, packet data transmission is often present in parallel with other transmission methods (in GSM, in parallel with voice transmission), and is used in addition to frequency channels for packet data transmission for uplink transmission with high signaling possibility.

Requests may optionally be sent on one or multiple frequency channels at a mobile station having the ability to manipulate multiple time slots simultaneously. The mobile station then makes a decision on the selected signaling channel. Allocation of radio technical resources is optionally made simultaneously for one or multiple frequency channels. Thus, the mobile station's ability to manipulate multiple time slots is often associated with the transmission of signaling messages or time threshold information. This capability of the mobile station is also related to downlink reception.

The following steps are presented during a logic connection as an alternative solution to the present method for the packet transmission of time critical information over the air interface between a base station and a mobile station in a TDMA mobile communication system. Between the mobile station and the base station, the mobile station can transmit a request for an uplink radio technical resource in a radio block for transmitting information upward. The mobile station sends this request, which includes an indication of at what point of time the uplink radio technical resource is required. The base station receives and evaluates the request and then performs modified division of the uplink radio technical resources to the mobile station.

Therefore, the delay of division is shortened and further signaling is omitted. The mobile station may itself affect the upward data rate.

According to a preferred embodiment of this solution, a particular sequence of radio blocks (e.g., second, third, etc.) may be assigned to mobile stations for a longer time period in each one frequency channel. The mobile station signals in the information block of the base station which of the radio blocks originally assigned to the mobile station do not need the mobile station. This type of signaling ensures sufficient uplink radio technical resources at the mobile station. If such radio technical resources are not needed, the radio technical resources may be used after the release of another connection.

The allocation of radio technical resources is made according to the service profile assigned to the mobile station in accordance with an improvement of the invention. Only mobile stations with a specific service profile for time threshold information send requests or only those requests are considered. Thus, too many mobile stations are suppressed from using this signaling possibility and blocking its fast resource requests in time critical applications.

Preferably, only a predetermined number of mobile stations are allowed having a service profile for time threshold information in the frequency channel. The number is tailored to the signaling possibilities.

If a priority is assigned to a mobile station in addition to the service profile, a request can be assigned to a mobile station of a particular priority and the request can be repeated within a certain time. This makes the request particularly preferred in time critical use.

In order to improve the allocation of uplink radio technical resources, alternative embodiments of the invention described may be combined.

Looking at the embodiment of the present invention in detail with reference to the accompanying drawings as follows.

The time division multiplexing-mobile radio system according to FIG. 1 is, for example, a GSM-mobile radio network (GSM) comprising a base station controller (BSC) and at least one base station system (BSS) having a base station (BS). There is a mobile station MS in the radio region of the illustrated base station BS. The base station system (BSS) is connected with additional devices of the GSM-mobile radio network (GSM). The base station controller BSC includes a control device SE, which performs the allocation of radio technical resources for the mobile station MS. However, the control device SE can also be realized in other devices of the mobile radio system.

Such further apparatus is for example a unit for realizing a mobile relay station (MSC) and an interworking-function (IWF). The interaction of a mobile relay station (MSC) and an interworking-function (IWF) results in a packet relay station, which is also referred to as a GPRS support node (GSN). This packet relay station is connected to a mobile relay station (MSC) for voice relay and can alternatively be realized as a separate unit.

The GSM-Mobile Wireless Network (GSM) may be connected with additional communication networks. For example, an additional communication terminal (KEG) may be connected to a GSM-mobile radio network via a fixed network or is itself a component of the GSM-mobile radio network (GSM).

GSM-Mobile Wireless Network (GSM) should be used for packet data transmission in parallel with known voice transmissions. At this point, the device for realizing the interworking-function (IWF) can couple the GSM-mobile radio network (GSM) with the data transmission network and thus with the further communication terminal (KEG).

The air interface between the mobile station MS and the base station BS is characterized by a frequency band and at least one time slot ts. According to FIG. 2, for example, eight time slots ts ts to ts7 are included in one frame R. FIG. The frame R is cyclically repeated, and one channel belongs to a returning time slot, for example, time slot ts = ts4. This time slot ts is used as a channel for transmitting packet data (GPRS-K) in the meaning of General Packet Radio Services (GPRS). Multiple time division multiplexing-frames R may be included in one micro frame.

If a mobile station (MS) uses this service, the mobile station (MS) executes random access with short access bursts corresponding to GSM-terminology and switches to a dedicated control channel. . Temporary identification (TLLI) is made in connection with the credential authentication and context setting, for example the logic connection (standby state). When the additional communication terminal (KEG) communicates with the mobile station (MS) via a packet data service, the above described random access call is made for paging and standby state of the mobile station (MS) required on the network side.

The mobile station MS again transmits an access block to the control channel for transmission of uplink packet data, and then informs the mobile station MS of a short identification, GPRS-channel GPRS-K, determined from the access block and GPRS The timing advance to be used on the channel GPRS-K is informed. The mobile station MS is also in a ready state. An additional access block ac1 is transmitted for activating timing advance at intervals of 1 to 2 s in the standby state. When the mobile station MS transmits data upward, an access block (for example, a second radio block fb2 to be described later or an access block for time compensation) is newly transmitted, and the access block is It is evaluated by the control apparatus SE of the base station BS. In some cases, corresponding radio technical resources are allocated immediately.

3 illustrates some types of radio blocks that are common in GSM mobile radio networks. At this time, only one radio block is still transmitted in the time slot ts4, for example ts4. The radio block starts and ends with 3 bits, respectively, which are used for transition and calm of the equalizer and other elements. The guard time of 8.25 bits in time slot ts4 is not used and compensates for the unadjustable possible execution time difference between radio blocks of different time slots ts4 and ts5.

A typical radio block fbn contains two 58 bits of valid information, with a 26 bit training sequence in the middle of the valid information.

In addition, a first radio block fb1, denoted as an access radio block ac1 below, has a start of 8 bits and a 41-bit training sequence and 36 bits of valid information. It shows what it contains. At this time, the guard time for the access block ac1 is extended to a total of 68.25 bits. Thus, 60 bits are provided for at least one second radio block fb2 as will be shown later. The access block ac1 is shortened. This is because the access block ac1 is provided to the GSM-mobile radio network for a situation where a safe reception is made despite an unknown signal propagation time and thus an inaccurate transmission time point.

3 exemplarily shows three embodiments for constructing a second radio block fb2 that fills a time slot ts4. The arrival of the radio blocks ac1, fb2 to the receiver is indicated by two time points t1 or t2, which are set by synchronization of the transmitting mobile station MS after the determination of the timing advance. . The radio blocks ac1 and fb2 do not overlap.

The second radio block fb2 according to FIG. 3 a) comprises a 26 bit normal training sequence and two data blocks of 17 bits each. According to FIG. 3 b), a 26 bit training sequence is preceded by a 34 bit data block. In contrast, in FIG. 4C, the training sequence is increased to 41 bits, followed by a 19-bit data block. Accordingly, the second radio blocks fb2 each have a length of 60 bits. However, other radio block lengths are possible. For example, the second radio block fb2 starts or ends with one or more bits again. It is also possible to increase or decrease the guard time at the end of the time slot.

The data block of the second radio block fb2 includes valid information and signaling information, for example a request req1 for uplink radio technical resource allocation.

FIG. 4 shows an access radio block ac1, in which the data portion of the access block ac1 includes information request MS-ID1 for identifying the request req1 for the uplink radio technical resource and the mobile station MS. Included. This access radio block ac1 is transmitted at regular intervals (240 ms or 480 ms) to activate timing advance. The receiving base station BS evaluates the request req1 and allocates radio technical resources.

FIG. 5 shows an uplink normal radio block, in which the mobile station MS includes next block indicator (NBI) information in addition to MS-ID1 information for identification, and the information includes an uplink following block ( For example, which of the first, second, or third blocks) is required. The NBI information can be used for signaling which of the uplink fixed allocated blocks is not used by the mobile station (MS). This block may be used for other connections. If the connection with the time critical information again conveys an increased need for radio technical resources, all allocated blocks are used again.

The uplink normal radio block according to FIG. 6 is used to assign an indication uplink state flag (USF) for using an uplink block to the mobile station MS indicated by identification information MS-ID1, for example. Accordingly, the base station BS allocates uplink radio technical resources. The determination of the distribution is made in the control device SE according to FIG. 1.

7 shows a frame structure of an uplink air interface having, for example, two frames R, which includes eight time slots ts0 to ts7. Time slots ts1 and ts4 are frequency channels (GPRS-K) assigned to packet data services (GPRS). The additional time slot ts0 is a normal GSM frequency channel, which is used, for example, as an access channel (RACH) for signaling purposes.

At this time, the mobile station MS having time threshold information to be transmitted through the packet data service GPRS transmits a request req1 to two frequency channels GPRS-K and optionally two frequency channels GPRS-. K and up and / or down resources are allocated. In addition, the mobile station MS sends a request for an uplink radio technical resource in an access channel RACH, which is typically not reserved for packet data service GPRS.

Time critical use may also be supported in Packet Data Service (GPRS) by the features described above or by a combination of the features.

8 simply shows the progress of time threshold information transmission.

In the first step (1) the mobile station MS requests an uplink (UL) block in the packet data channel GPRS-K.

In a second step 2, the base station BS of the downlink (GPRS-K DL) is determined in block B4 (the radio technical resource of the block B4 is actually determined for another mobile station MS). The USF is transmitted for the mobile station MS required in step (1) and accordingly allocated an uplink block B6.

In a third step 3 the mobile station MS transmits upward time critical information and at the same time indicates that the mobile station MS needs an additional block by the NBI.

In a fourth step 4, the next uplink block is allocated.

The mobile station MS needs all the additional blocks in this way and indicates this by the corresponding value of the NBI. The NBI reserves blocks B4, B5, and B6. If only each second block is conditionally required by the half rate, this is also controlled by the described mechanism.

The air interface for TDMA / CDMA-transmission is shown in FIG. 9, where the frame of the wideband channel comprises, for example, 5 MHz, 16 time slots ts0 to ts15. In the TDD-mode (time division duplex), the first portion of the time slot is used for upward and the second portion is used for downward. For example, by the first time slot ts0 used upward, a plurality of channels in the time slot ts0 can be distinguished by individual extension codes c1 to c8.

Some of the extension codes c1 to c6 are reserved for the access channel RACH for the mobile station MS, while other extension codes c7 and c8 are used for valid data transmission in the valid data channel TCH. However, within the access channel RACH, a distinction is made between the mobile stations MS. Extension codes c3 to c6 are assigned to all mobile stations (MS), while the remaining extension codes c1 and c2 are assigned to individual mobile stations (MA A to MA L). In this case, the frequency channel formed by the extension code and the time slot is divided once again in time, so that a plurality of mobile stations MS in one time slot are prevented from colliding by short radio blocks that do not overlap in time. Requests for resource allocation can be sent.

The assignment of the mobile station (MS) to a particular portion of the channel used for quick access to uplink radio technical resources is made due to the service profile. This service profile for the service to be transmitted between the mobile station (MS) and the base station (BS) is the maximum allowed access delay, data amount, data rate, priority of the mobile station (MS), or generally expressed in terms of quality of service. (QoS)). The preferred operation of the mobile station MS is made when the service profile provides time critical information in the sense of fast preparation of uplink resources.

These services are for example

Voice services with very little tolerated delay, relatively low data rates and little pauses between voice information,

-Video services with less permissible delay and higher data rates (up to 2 Mbit / s) varying between maximum and minimum values,

Telemetric-transmission with a small amount of data, but very few allowable access delays (eg alarm messages) depending on the required use.

If the remaining parameters of the radio connection (e.g. transmit power and timing advance) are stored active in spite of the pose of transmission, according to the invention the uplink radio technical resources are urgently needed by the minimum value of the data of the base station BS. Is displayed. With activated parameters, the radio block for signaling access requests does not have to have a long training sequence or midamble. This allows the radio block to be very short and can be transmitted with additional radio blocks in the time slot.

Thus, the channel is divided into a number of sub-units, which are correctly assigned to the mobile station MS A-in this case no collision occurs-or to the mobile station group MS I + J. The assignment of a channel or channel portion to a mobile station (MS) does not mean that the mobile station (MS) continuously transmits there, but the channel portion is assigned to the mobile station (MS) only when the mobile station wishes to transmit. Means that.

The mobile station MS according to FIG. 10 includes a service field T, a signal processing device SP, a control device ST1, and a transmission / reception device SE / EE. In the service field T, the subscriber executes the input, in particular the priority P1, the input for the required service profile DP1 and the input for the transmission of the data packet by the packet data service GPRS or the packet. Perform the required start of the voice connection to the communication terminal (KEG) via data service (GPRS).

In the presence of a voice connection or other connection with time threshold information (video or other service whose transmission point is not arbitrary) via the packet data service (GPRS), the signal processing apparatus SP corresponds to providing the time threshold information to be transmitted. A request req1 for the technical resource is formed and transmitted via the transmitting / receiving device SE / EE using the aforementioned signaling scheme.

In the control apparatus ST1, the time slot ts is selected and a transmission time point is selected according to a predetermined timing advance. When the signal processing apparatus SP receives an allocation for an uplink radio resource which is transmitted from the base station BS, this is notified to the control apparatus ST1, and the control apparatus ST1 controls the next transmission time point. .

The base station BS according to FIG. 11 includes a transmission / receiving device (SE / EE) that amplifies a received signal and converts or modulates it into a base band. In an analog / digital converter, the received signal is converted, for example digitized, into a symbol with a detailed value reserve. For example, in the signal evaluation device SA formed of a digital signal processor, an access block ac1, in particular a normal radio block, is processed.

Thus, the valid information and signaling information of the radio block is conveyed to, for example, an additional device in the base station BS or a base station controller BSC. An evaluation is made in the control apparatus ST2 for the radio block having the request req1, wherein the priorities P1 to P4 assigned to the mobile station MS corresponding to the identifications MS-ID1 to MS-ID4 and There is a table T1 for service profiles DP1, DP2.

Priority P1 or P2 means that the assigned mobile station MS can transmit the second radio block fb2 as request req1. Other mobile stations do not. In the priority P1, there is a difference between the priority P1 and the priority P2 in that the mobile station MS can immediately repeat the transmission of the second radio block fb2. The mobile station MS having priority P2 has to wait a certain time. Thus, the second radio block fb2 of the various mobile stations MS is repeatedly erased from each other.

Corresponding to priority P1 and service profile DP1, the base station BS detects that the mobile station MS transmits time threshold information and that the request req1 for the uplink radio technical resource can be preferentially operated. The information NBI at the time point intended by the mobile station MS for the radio technical resource is also considered in the control device ST2.

Claims (18)

CLAIMS 1. A method for packetized time threshold information transmission over a wireless interface between a base station (BS) and a mobile station (MS) in a TDMA mobile communication system, comprising: during a logic connection: A mobile station MS having service profiles P1 and P2 for time threshold information is upward in the channel portion assigned only to the service profiles P1 and P2, without being pre-allocated by the base station BS. Send a request (req1) for a radio technical resource of, The base station (BS) receives and evaluates a request (req1) and then performs a variable allocation of uplink radio technical resources to the mobile station (MS). The method of claim 1, By synchronizing and transmitting the first radio block fb1 in the time slot ts of the air interface, the first radio block fb1 reaches the base station BS at a predetermined time point t1 in the time slot ts. , Transmit at least one second radio block fb2 having a request req1 in the same time slot ts, and evaluate the second radio block fb2 separately from the first radio block fb1. How to feature. The method of claim 2, And wherein the radio blocks (fb1, fb2) transmitted in the time slot (ts) have the same length or represent different types of radio blocks (fb1, fb2). The method of claim 2 or 3, The arrival time t1 of the first radio block fb1 is formed at the beginning of the time slot ts. The method of claim 1, Transmitting a request (req1) with an access block (ac1). The method of claim 5, Providing a large number of time slots (ts) for the access block (ac1). The method according to claim 1, 5 or 6, Request (req1) is also transmitted in a time slot (ts) not provided for packet data transmission. The method of claim 1, And request (req1) can optionally be sent on at least two frequency channels. The method of claim 8, And allocating radio technical resources selectively for one or multiple frequency channels simultaneously. CLAIMS 1. A method for packetized time threshold information transmission over a wireless interface between a base station (BS) and a mobile station (MS) in a TDMA mobile communication system, comprising: during a logic connection: Between the mobile station MS and the base station BS, a request req1 for an uplink radio technical resource may be transmitted in a radio block for transmitting information. A mobile station MS having service profiles P1 and P2 for time critical information transmits this request req1 in the channel portion assigned only to the service profiles P1 and P2, which request req1 An indication of whether uplink radio technical resources are required by the mobile station (MS) at the time point, A base station (BS) receives and evaluates the request (req1) and then performs a modified allocation of uplink radio technical resources to the mobile station (MS). The method of claim 10, Providing an uplink radio technical resource to the mobile station (MS) and the request (req1) comprising an indication of which transmission time point is not used. The method according to claim 1 or 10, A method of assigning service profiles (DP1, DP2) to a mobile station (MS) and having a specific service profile (DP1) for time critical information in the assignment of radio technical resources. The method of claim 12, Only a predetermined number of mobile stations (MS) with a service profile (DP1) for time threshold information in the frequency channel are allowed. The method of claim 12, In addition to the service profiles DP1 and DP2, the priorities P1, P2, and P3 are assigned to the mobile stations MS, and only the mobile stations MS of the specific priority P1 determine the request req1 at the specified time td. Method that can be repeated within. The method according to claim 1 or 10, And the mobile communication system is a GSM mobile communication network and performs packet-based transmission according to the GPRS-method. The method according to claim 1 or 10, And wherein the mobile communication system is a TDMA / CDMA-transfer mobile wireless network and performs packet-based transmission on a wideband frequency channel formed by time slots (ts) and extension codes (c). An apparatus for transmitting time critical information in a packet manner during a logical connection between a base station (BS) and a mobile station (MS) in a TDMA mobile communication system, A signal processing device (SP) for said mobile station (MS) to form a request (req1) for radio technical resources upward in a channel portion allocated only to service profiles (P1, P2) for time threshold information, and A control device ST1 for synchronizing the transmission of the request req1 in the TDMA structure; A receiving device EE for receiving, by the base station BS, a signal having a request req1 for an uplink radio technical resource transmitted in a time slot ts; and A signal evaluator SA for processing the request req1, and And a control device (ST2) for allocating an uplink radio technical resource to a required mobile station (MS). delete