Vehicle-side terminal device and method for operating the vehicle-side terminal device to control radio resources

Abstract

A method for operating a first vehicle-side terminal device (NN1; NN2, NN3; NN4) for a radio communication network is provided, wherein the method comprises: determining a resource pattern within a resource pool, wherein the resource pattern comprises a plurality of radio resources for a data channel within the resource pool; and sending control information on a control channel, wherein the control information indicates the resource pattern and a group of at least two vehicle-side terminal devices allocated to the resource pattern.

Description

Technical Field

[0001] The present invention relates to a first vehicle-side terminal, a method for operating the first vehicle-side terminal, a second vehicle-side terminal, and a method for operating the second vehicle-side terminal. Summary of the Invention

[0002] A first aspect of the present specification relates to a first vehicle-side terminal device for a radio communication network, wherein the first vehicle-side terminal device includes at least one processor, at least one memory having computer program code, at least one communication module and at least one antenna, wherein the computer program code is configured so that it utilizes the at least one processor, the at least one communication module and the at least one antenna to cause: the first vehicle-side terminal device determines a resource pattern within a resource pool, wherein the resource pattern includes multiple radio resources for a data channel within the resource pool, and the first vehicle-side terminal device sends control information on a control channel, wherein the control information indicates the resource pattern and a group of at least two vehicle-side terminal devices allocated to the resource pattern.

[0003] Advantageously, multiple radio resources within the resource pool are thus reserved exclusively as corresponding transmission opportunities for the group of at least two terminal devices. Furthermore, by determining the resource pattern on the terminal device side, decentralized coordination of group-specific use of radio resources is achieved. This decentralized reservation method reduces the probability of conflicts for radio resources for the selected resource pattern and enables messages to be delivered within a given time window. Consequently, the reliability of communication for applications involving multiple motor vehicles is improved and is independent of the presence of a base station.

[0004] Advantageously, the radio resources can be used in a group-specific manner. For example, the radio resources of the resource pattern can be implemented in the driving order of the motor vehicles in a queue.

[0005] Time-critical applications within groups of at least two end devices benefit from the reduced collision probability. These time-critical applications involve driving maneuvers that must be coordinated through time-critical message exchanges between vehicles. For example, vehicles traveling in a platoon, which exchanges messages using a hop-by-hop method, can reserve a resource mode exclusively in order to coordinate and safely direct the braking of the entire platoon. In another example, groups are formed for lane change maneuvers, and these vehicles coordinate their respective braking and steering maneuvers with each other via corresponding time-critical messages.

[0006] An advantageous example is characterized in that the first vehicle-side terminal device determines potentially available radio resources for the group consisting of at least two vehicle-side terminal devices, and determines the resource pattern based on a plurality of potentially available radio resources, wherein the potentially available radio resources represent potential transmission opportunities within the radio resources of the data channel indicated by the resource pool. Advantageously, potential transmission opportunities on the data channel are identified so that the resource pattern is determined as a subset of these potential transmission opportunities.

[0007] An advantageous example is characterized in that the first vehicle-side terminal device receives other control information on a control channel, wherein the other control information indicates another resource pattern and a group of at least two terminal devices allocated to the other resource pattern, wherein the other resource pattern includes multiple other radio resources of the data channel within the resource pool, and the first vehicle-side terminal device determines the multiple potentially available radio resources based on the other resource pattern, wherein the multiple potentially available radio resources are not included in the other resource pattern. When determining the potentially available radio resources, radio resources used by other groups of vehicle-side terminal devices are advantageously excluded. Therefore, decentralized coordination of radio resource use is provided.

[0008] One advantageous example is characterized in that the first vehicle-side terminal device determines the corresponding occupancy status of radio resources in the resource pool, and determines the plurality of potentially available radio resources based on the determined occupancy status, wherein the plurality of potentially available radio resources are not occupied by other vehicle-side terminal devices. By determining the occupancy status of the corresponding radio resources, the periodicity of data communication between vehicle-side terminal devices is advantageously utilized to identify the potentially available radio resources based on their occupancy patterns.

[0009] An advantageous example is characterized in that the first vehicle-side terminal device determines the corresponding priorities of the used radio resources of the resource pool, and determines the multiple potentially available radio resources based on the determined priorities, wherein the multiple potentially available radio resources include those radio resources whose own determined priorities are lower than a priority threshold. As a result, radio resources that were previously occupied by low-priority communications are advantageously reserved for group communications. This improves communication in a group consisting of at least two terminal devices. For example, the multiple potentially available radio resources particularly also include those radio resources whose own determined priorities are lower than a priority threshold. However, of course, other mechanisms can also be used to determine low-priority communications or low-priority radio resources.

[0010] An advantageous example is characterized in that the first vehicle-side terminal device determines a new resource pattern within the resource pool and sends new control information on a control channel, wherein the new resource pattern includes a plurality of radio resources of the data channel within the resource pool, wherein the new control information indicates the new resource pattern, a group consisting of at least two vehicle-side terminal devices allocated to the new resource pattern, and a time point at which the new resource pattern takes effect. For example, the new resource pattern is determined when the group size changes. In another example, the new resource pattern is determined in order to improve the distribution of radio resources occupied for group communication. Other examples include random or periodic updating of the resource pattern. By indicating the time point at which the resource pattern takes effect, the resource pattern is advantageously notified in advance on the control channel, so that other terminal devices that wish to send low-priority communications on the data channel give up using the radio resources of the new resource pattern.

[0011] An advantageous example is characterized in that the first vehicle-side terminal device determines the lack of reception of other control information, determines another new resource pattern within the resource pool based on the determined lack, and sends the other new control information on the control channel, wherein the other control information indicates the determined resource pattern and a group of at least two vehicle-side terminal devices allocated to the determined resource pattern, wherein the other new resource pattern includes multiple radio resources of the data channel within the resource pool, wherein the other new control information includes the other new resource pattern and a group of at least two vehicle-side terminal devices allocated to the new resource pattern. Advantageously, the first vehicle-side terminal device recognizes that a conflict has occurred on the data channel by the lack of the following control information, wherein the control information basically represents a copy of the control information sent by the first terminal device. The conflict is resolved by determining and propagating the other new resource pattern.

[0012] A second aspect of the present specification relates to a method for operating a first vehicle-side terminal device for a radio communication network, wherein the method comprises: determining a resource pattern within a resource pool, wherein the resource pattern comprises a plurality of radio resources for a data channel within the resource pool; and sending control information on a control channel, wherein the control information indicates the resource pattern and a group of at least two vehicle-side terminal devices assigned to the resource pattern.

[0013] A third aspect of this specification relates to a second vehicle-side terminal device for use in a radio communications network, wherein the second vehicle-side terminal device includes at least one processor, at least one memory having computer program code, at least one communication module, and at least one antenna, wherein the computer program code is configured to utilize the at least one processor, the at least one communication module, and the at least one antenna to cause the second vehicle-side terminal device to receive control information on a control channel, wherein the control information indicates a resource pattern and a group of at least two vehicle-side terminal devices allocated to the resource pattern, wherein the resource pattern includes a plurality of radio resources of a data channel within a resource pool, the second vehicle-side terminal device determining a group membership between the second terminal device and the group of at least two terminal devices, and transmitting data on the data channel using at least one radio resource of the received resource pattern based on the determined group membership. Advantageously, the second vehicle-side terminal device uses the radio resources of the received resource pattern only if the second terminal device is part of the group of at least two terminal devices. Conversely, if the second terminal device is not part of the group, the second terminal device does not transmit on the radio resources of the received resource pattern.

[0014] An advantageous embodiment is characterized in that the second vehicle-side terminal device determines that it is part of the group of at least two vehicle-side terminal devices and, accordingly, transmits further control information on the control channel, wherein the further control information indicates the received resource pattern and the group of at least two vehicle-side terminal devices to which the received resource pattern is allocated. Thus, the resource pattern with reserved radio resources is advantageously propagated via the control channel. Repeating the control information within the group increases the probability of dissemination of this information. This, in particular, reaches every terminal device of the group and informs terminal devices that are not part of the group and are located in the vicinity of the group not to use the reserved radio resources.

[0015] One advantageous embodiment is characterized in that the second vehicle-side terminal device is assigned to the group of at least two terminal devices, and wherein the second vehicle-side terminal device detects a conflict on the radio resources of the resource pattern and stops transmitting the further control information based on the detected conflict. Advantageously, therefore, on the one hand, propagation of the resource pattern within the group is stopped. On the other hand, the absence of the control information signals to the terminal device that determined the resource pattern that a new resource pattern must be determined due to the detected conflict. As a result, a rapid conflict resolution is provided for terminal devices that are not centrally scheduled.

[0016] A favorable example is characterized in that the second vehicle-side terminal device sends additional control information, wherein the additional control information indicates the radio resources used by the second vehicle-side terminal device, wherein the radio resources used by the second vehicle-side terminal device have a lower priority than the radio resources of the resource pattern, and the second vehicle-side terminal device determines that: the second vehicle-side terminal device is not part of the group consisting of at least two vehicle-side terminal devices and a part of the radio resources with low priority used by the second terminal device is included in the resource pattern, and accordingly, a part of the radio resources with low priority used by the second terminal device that is not included in the resource pattern is not used.

[0017] A fourth aspect of the present specification relates to a method for operating a second vehicle-side terminal device for a radio communication network, wherein the method comprises: receiving control information on a control channel, the control information indicating a resource pattern and a group consisting of at least two vehicle-side terminal devices allocated to the resource pattern, wherein the resource pattern comprises a plurality of radio resources of a data channel within a resource pool; determining a group affiliation between the second terminal device and the group consisting of at least two terminal devices; and sending data on the data channel through at least one of the radio resources of the received resource pattern according to the determined group affiliation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached figure:

[0019] Figure 1 A schematically illustrated traffic situation is shown;

[0020] Figure 2 and Figure 3 Flowcharts are shown respectively;

[0021] Figure 4 The control information is shown in schematic form;

[0022] Figure 5 shows a schematic sequence diagram; and

[0023] Figure 6 A schematic flow chart and a time-frequency diagram are shown. DETAILED DESCRIPTION

[0024] Figure 1 A schematic perspective view of an exemplary traffic situation is shown. Each motor vehicle V1, V2, V3, V4 comprises a vehicle-side terminal NN1, NN2, NN3, NN4, which together form a radio communication network 2. The respective motor vehicles V1, V2, V3, V4 are in particular passenger cars or trucks or trailer trucks or tractor trucks.

[0025] Each of the terminal devices NN1, NN2, NN3, NN4 includes a data bus B1, B2, B3, B4 that interconnects at least one processor P1, P2, P3, P4, a memory M1, M2, M3, M4, and a radio module C1, C2, C3, C4. At least one antenna A1, A2, A3, A4 is connected to the radio module C1, C2, C3, C4. The respective radio module C1, C2, C3, C4 is configured to transmit and receive radio signals via the antenna A1, A2, A3, A4 in accordance with a radio communication network 2. A computer program, in the sense of a computer program product, is stored in the memory M1, M2, M3, M4. The computer program is configured to execute the method steps described herein, in particular with the aid of the at least one processor P1, P2, P3, P4, the at least one memory M1, M2, M3, M4, and the at least one radio module C1, C2, C3, C4, and to communicate with other terminals via the at least one antenna A1, A2, A3, A4. Alternatively or additionally, the processors P1, P2, P3, P4 may be implemented as ASICs to execute the described method steps.

[0026] The radio communication network 2 provides at least one radio channel in terms of radio resources or radio operating resources. Vehicle-side terminals NN1, NN2, NN3, NN4 form the radio communication network 2 and are designed according to the LTE-V standard, in particular according to "LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures (3GPP TS 36.213 Version 14.3.0 Release 14)," which is incorporated herein by reference.

[0027] In the traffic situation shown, vehicle V1 is traveling ahead of vehicle V2, which in turn is traveling ahead of vehicle V3. Vehicles V1 to V3 form a group G1, specifically a column, a so-called platoon. For example, motor vehicles V2 and V3 autonomously adjust their respective distances from the preceding motor vehicles V1 and V2 to enable emergency braking without colliding with them. Motor vehicle V4 and its terminal NN4 are part of motor vehicle group G2, of which another terminal NN5 is shown. In the example shown, corresponding messages M1 and M2 are sent from terminal NN1 and NN2 to terminal NN2 and NN3 of the immediately following motor vehicles V2 and V3. At least terminal NN4 is located near terminal NN1, NN2, and NN3, thereby applying a decentralized channel access method, such as in sidelink mode 4, with a non-centrally controlled channel access method, which will be described further below.

[0028] Figure 2 A schematic flow chart for operating at least one of these vehicle-side terminal devices is shown. According to step 202, a resource pattern within a resource pool is determined, wherein the resource pattern comprises a plurality of radio resources for a data channel within the resource pool. The resource pool comprises a plurality of physical radio resources, such as a plurality of subframes and / or a plurality of resource blocks, which can be used by the terminal device for side link transmission. The radio resources used by the respective terminal device for the dedicated side link transmission are selected from the resource pool by a terminal device of the group of terminal devices or are allocated to other terminal devices in the group. It is of course also possible that a terminal device that does not belong to the group takes over the determination of the resource pattern and / or the distribution of the resource pattern in the group.

[0029] For example, the resource pool is received from the V2X control function as part of the V2X configuration (V2X: Vehicle To Everything). The resource pool can therefore be configured individually, for example via corresponding RRC signaling (Radio Resource Control) for the terminal device in RRC_CONNECTED mode.

[0030] In another example, the resource pool is preconfigured and stored in the terminal device, for example on a SIM card, wherein the preconfigured resource pool is loaded from the memory and thus determined. The preconfigured resource pool is advantageous, for example, in out-of-coverage situations.

[0031] Therefore, there are various possibilities for determining a resource pool for a vehicle-side terminal device. The resource pool is, for example, reserved for group communication, in particular for communication in queue applications. In an alternative example, the resource pool is reserved for group communication and other applications, that is, the resource pool is used in combination.

[0032] According to step 204 , control information is sent on a control channel, the control information indicating the resource pattern and a group consisting of a plurality of vehicle-side terminal devices allocated to the resource pattern.

[0033] Figure 3 A schematic flow chart for operating at least one vehicle-side terminal device is shown. In step 302, control information is received on a control channel, the control information indicating a resource pattern and a group of multiple vehicle-side terminal devices allocated to the resource pattern, wherein the resource pattern includes multiple radio resources of a data channel within a resource pool. In step 304, a group affiliation between a second terminal device and the group of multiple terminal devices is determined. In step 306, data is transmitted on the data channel using at least one radio resource of the received resource pattern based on the determined group affiliation.

[0034] Figure 4 The control information 402 is shown in schematic form and comprises first information 404 indicating a resource pattern and second information 406 indicating a group consisting of a plurality of terminal devices linked to the resource pattern.

[0035] Figure 5 A schematic sequence diagram for operating a radio communication network 2 is shown. In step 502, terminal device NN1 determines a resource pattern within a resource pool that should be used by group G1. The resource pattern for group G1 includes radio resources RR1 and RR2. In step 504, corresponding control information CI1 is transmitted from terminal device NN1 via a control channel PSCCH.

[0036] In step 506 , the terminal NN4 determines that the group G1 transmitted via the control information CI1 is different from the group G2 to which the terminal NN4 belongs. Accordingly, in step 508 , all radio resources included in the notified resource pattern are blocked from being used for transmission by the terminal NN4.

[0037] In another example, terminal device NN4 is not necessarily part of the group of multiple terminal devices. In this example, terminal device NN4 transmits additional control information (not shown) in step 506 indicating the radio resources used by vehicle-side terminal device NN4. The information then determines that vehicle-side terminal device NN4 is not part of group G1, which consists of at least two vehicle-side terminal devices, and that a portion of the radio resources used by terminal device NN4, which has a low priority, is included in the resource pattern. The radio resources used by vehicle-side terminal device NN4 have a lower priority than the radio resources transmitted in the control information CI1 and belonging to the resource pattern of group G1. The low priority of radio resources is characterized by the fact that terminal devices that are part of the group receive priority over terminal devices that are not part of the group when using radio resources. Based on the lack of group membership and the low-priority radio resources included in the received resource pattern, in step 508, the correspondingly identified portion of the radio resources used by the second terminal device NN4 is not used, or its use by terminal device NN4 is blocked.

[0038] After receiving control information CI1, terminal device NN2 determines in step 510 that radio resources RR1 and RR2 are reserved exclusively for use by terminal devices in group G1. Therefore, in step 510, the group membership of terminal device NN2 with group G1 is determined. If it is determined that terminal device NN2 has no conflict with respect to radio resources RR1 and RR2 in the resource pattern, and if the group membership is determined to be positive, terminal device NN2 transmits control information CI2 on the control channel PSCCH in step 512.

[0039] In step 514 , the terminal device NN2 receives data D1 via the radio resource RR1 of the data channel PSSCH. In step 516 , the terminal device NN2 transmits data D2 via the radio resource RR2 of the resource pattern received or indicated in step 504 .

[0040] In steps 518 and 520, terminal devices NN1 and NN4 independently determine corresponding resource patterns from a common resource pool, in which radio resource RR3 is randomly and exclusively reserved for use in both groups G1 and G2. A conflict occurs when data D3 and D4 are transmitted via radio resource RR3 in steps 522 and 524, which terminal device NN2 detects in step 526. In step 526, terminal device NN2 is prohibited from transmitting control information CI. Terminal device NN1, responsible for resource pattern allocation, expects control information CI to arrive within a duration T. Terminal device NN1 detects in step 530 that control information CI is still missing after the duration T, and determines a new resource pattern that, at least with respect to radio resource RR3, does not overlap with the resource pattern previously determined in step 518. In step 532, this new resource pattern is transmitted using control information CI3.

[0041] The control information CI1, CI2, and CI3 are sidelink control information SCI and are transmitted via the control channel, for example, a physical sidelink control channel PSCCH. The data channel is, for example, a physical sidelink shared channel PSSCH. The data channel and the control channel are each a physical radio channel having a radio frequency and / or duration.

[0042] Figure 6 A schematic combined flow chart and radio resource diagram is shown for explaining Figure 5 502, 518, 520, 530 in FIG. Using the steps shown, a terminal is operated which performs a decentralized reservation of radio resources for the respective current group of terminals.

[0043] In step 602, a resource pool RP comprising a plurality of radio resources is determined. In step 604, at least one resource pattern for another group of terminal devices is received. Since the radio resources used by the other group of terminal devices should not be used by the current group of terminal devices, when determining the resource pattern for the current group of terminal devices, these radio resources RR11, RR14, and RR31 are excluded, i.e., not used.

[0044] In step 606, a check is performed to determine whether the potentially occupied radio resources are considered for determining the resource pattern for the current group, i.e., whether the potentially occupied radio resources are candidates for determining the resource pattern. In step 608, a plurality of radio resources RR21, RR33, RR34, and RR35 that are potentially occupied by low-priority communications are determined, for example, using a sensing mechanism. As a result, in step 606, potentially idle radio resources of the resource pool RP are determined, which are displayed without shading in this example. Performing this sensing mechanism is particularly advantageous for the leading vehicle in the queue, i.e., the head of the queue, because the head of the queue, due to its position, can be the first to determine potentially idle radio resources.

[0045] In step 610, it is determined whether the potentially free radio resources determined in steps 602, 604, and 608 are sufficient to determine the at least one resource pattern, taking into account, for example, the group configuration of the group. If this is not the case, a check is performed in step 612 to determine whether the priority of the used radio resource RR21 is below a threshold. If this is the case, resource RR21 is added to the potential candidates for determining the resource pattern in step 614. Steps 612 and 614 are performed for each radio resource.

[0046] In step 616 , at least one resource pattern is determined depending on the configuration of the current group, for example depending on the number of terminal devices in the group or the estimated communication demand, and depending on the determined potentially free radio resources.

[0047] For example, Figure 1Group G1 in FIG. 1 includes three terminal devices NN1, NN2, and NN3. For example, to perform hop-by-hop communication, three radio resources are required that are connected to each other but separated in time so that the corresponding messages can be processed in the corresponding terminal devices during the time intervals. According to step 616, the resource pattern is correspondingly determined from the resource pool RP. Although radio resource RR21 is potentially occupied, since it is determined in step 616 that there are insufficient free radio resources to determine the resource pattern, radio resource RR21 is selected as a potential candidate in step 614. Based on the current group configuration, radio resources RR21, RR23, and RR25 are determined as the resource pattern in step 616. Distributing the determined resource pattern to adjacent terminal devices ensures that the adjacent terminal devices relinquish their use of radio resources RR21, RR23, and RR25, thereby ensuring that the radio resources RR21, RR23, and RR25 of the resource pattern are exclusively reserved for the current group consisting of multiple terminal devices. The selected radio resources RR21 , RR23 and RR25 are shown as being selected only in the same frequency range by way of example, but can of course also be selected in frequency ranges different from one another.

Claims

1. A first vehicle-side terminal device (NN1; NN2, NN3; NN4) for a radio communication network, wherein the first vehicle-side terminal device (NN1; NN2, NN3; NN4) comprises at least one processor, at least one memory having computer program code, at least one communication module, and at least one antenna, wherein the computer program code is configured such that the computer program code causes, by means of the at least one processor, the at least one communication module, and the at least one antenna: the first vehicle-side terminal device (NN1; NN2, NN3; NN4) determining a resource pattern within a resource pool, wherein the resource pattern comprises a plurality of radio resources of a data channel within the resource pool, The first vehicle-side terminal device transmits control information on a control channel, wherein the control information indicates the resource pattern and a group (G1; G2) consisting of at least two vehicle-side terminal devices (NN1, NN2, NN3; NN4) allocated to the resource pattern, The first vehicle-side terminal device determines a potentially available radio resource for the group (G1; G2) consisting of at least two vehicle-side terminal devices (NN1, NN2, NN3; NN4) and determines the resource pattern based on a plurality of potentially available radio resources, wherein the potentially available radio resources represent potential transmission opportunities within the radio resources of the data channel indicated by the resource pool, The first vehicle-side terminal device receives other control information on the control channel, wherein the other control information indicates another resource pattern and a group (G1; G2) consisting of at least two terminal devices (NN1, NN2, NN3; NN4) allocated to the other resource pattern, wherein the other resource pattern includes a plurality of other radio resources of the data channel within the resource pool, and The first vehicle-side terminal device determines the plurality of potentially available radio resources according to the other resource pattern, wherein the plurality of potentially available radio resources and the radio resources of the other resource pattern do not overlap with each other, in, The resource pattern is a resource pattern used for data transmission by the group consisting of the at least two vehicle-side terminal devices.

2. The first vehicle-side terminal device (NN1; NN2, NN3; NN4) according to claim 1, wherein The first vehicle-side terminal device (NN1; NN2, NN3; NN4) determining corresponding occupancy status of radio resources of the resource pool, The plurality of potentially available radio resources are determined according to the determined occupancy status, wherein the plurality of potentially available radio resources are not occupied by other vehicle-side terminal devices.

3. The first vehicle-side terminal device (NN1; NN2, NN3; NN4) according to claim 1 or 2, wherein: The first vehicle-side terminal device (NN1; NN2, NN3; NN4) determining respective priorities of used radio resources of the resource pool, The plurality of potentially available radio resources are determined according to the determined priorities.

4. The first vehicle-side terminal device (NN1; NN2, NN3; NN4) according to claim 1 or 2, wherein: The first vehicle-side terminal device (NN1; NN2, NN3; NN4) determining a new resource pattern within the resource pool and sending new control information on the control channel, wherein the new resource pattern includes a plurality of radio resources of the data channel within the resource pool, The new control information indicates the new resource pattern, a group (G1; G2) consisting of at least two vehicle-side terminal devices allocated to the new resource pattern, and a time point when the new resource pattern takes effect.

5. The first vehicle-side terminal device (NN1; NN2, NN3; NN4) according to claim 1 or 2, wherein: The first vehicle-side terminal device (NN1; NN2, NN3; NN4) Determine that reception of other control information is missing, determine other new resource patterns within the resource pool based on the determined missing, and send other new control information on the control channel, wherein the other control information indicates the determined resource pattern and a group X (G1; G2) consisting of at least two vehicle-side terminal devices allocated to the determined resource pattern, wherein the other new resource pattern includes multiple radio resources of the data channel within the resource pool, and wherein the other new control information includes the other new resource pattern and a group consisting of at least two vehicle-side terminal devices allocated to the new resource pattern.

6. A method for operating a first vehicle-side terminal (NN1; NN2, NN3; NN4) for a radio communication network, the method comprising: determining a resource pattern within a resource pool, wherein the resource pattern comprises a plurality of radio resources of a data channel within the resource pool, sending control information on a control channel, wherein the control information indicates the resource pattern and a group consisting of at least two vehicle-side terminal devices allocated to the resource pattern, determining a potentially available radio resource for the group (G1; G2) of at least two vehicle-side terminal devices (NN1, NN2, NN3; NN4) and determining the resource pattern based on a plurality of potentially available radio resources, wherein the potentially available radio resources represent potential transmission opportunities within the radio resources of the data channel indicated by the resource pool, receiving further control information on the control channel, wherein the further control information indicates a further resource pattern and a group (G1; G2) consisting of at least two terminal devices (NN1, NN2, NN3; NN4) allocated to the further resource pattern, wherein the further resource pattern comprises a plurality of further radio resources of the data channel within the resource pool, and determining the plurality of potentially available radio resources based on the further resource pattern, wherein the plurality of potentially available radio resources and radio resources of the further resource pattern do not overlap with each other, The resource pattern is a resource pattern used for transmitting data by a group consisting of the at least two vehicle-side terminal devices.

7. A second vehicle-side terminal device (NN2; NN3, NN4; NN1) for a radio communication network, wherein the second vehicle-side terminal device (NN2; NN3, NN4; NN1) comprises at least one processor, at least one memory having computer program code, at least one communication module, and at least one antenna, wherein the computer program code is configured such that the computer program code causes, by means of the at least one processor, the at least one communication module, and the at least one antenna: the second vehicle-side terminal device (NN2; NN3, NN4; NN1) receiving control information on a control channel, wherein the control information indicates a resource pattern and a group (G1; G2) of at least two vehicle-side terminal devices allocated to the resource pattern, wherein the resource pattern comprises a plurality of radio resources of a data channel within a resource pool, The second vehicle-side terminal device determines a group membership relationship between the second vehicle-side terminal device (NN2; NN3, NN4; NN1) and the group (G1; G2) consisting of at least two terminal devices, transmitting data on the data channel through at least one radio resource of the received resource pattern according to the determined group membership, The second vehicle-side terminal device transmits additional control information, wherein the additional control information indicates a radio resource used by the second vehicle-side terminal device (NN4), wherein the radio resource used by the second vehicle-side terminal device (NN4) has a lower priority than the radio resource of the resource pattern, The second vehicle-side terminal device determines that the second vehicle-side terminal device (NN4) is not part of the group (G1) consisting of at least two vehicle-side terminal devices and that a portion of the radio resources with low priority used by the second vehicle-side terminal device (NN4) is included in the resource pattern, and accordingly A portion of radio resources with a low priority used by the second vehicle-side terminal device (NN4) not included in the resource pattern is not used.

8. The second vehicle-side terminal device (NN2; NN3, NN4; NN1) according to claim 7, wherein The second vehicle-side terminal device (NN2; NN3, NN4; NN1) It is determined that the second vehicle-side terminal device (NN2; NN3, NN4; NN1) is part of the group consisting of at least two vehicle-side terminal devices, and accordingly Further control information is transmitted on the control channel, wherein the further control information indicates the received resource pattern and a group of at least two vehicle-side terminal devices assigned to the received resource pattern.

9. The second vehicle-side terminal device (NN2; NN3, NN4; NN1) according to claim 8, wherein The second vehicle-side terminal device (NN2; NN3, NN4; NN1) is assigned to the group (G1; G2) consisting of at least two terminal devices, and wherein the second vehicle-side terminal device (NN2; NN3, NN4; NN1) determining a conflict on a radio resource of the resource pattern, The sending of the other control information is stopped according to the determined conflict.

10. A method for operating a second vehicle-side terminal (NN2; NN3, NN4; NN1) for a radio communication network, the method comprising: receiving control information on a control channel, the control information indicating a resource pattern and a group of at least two vehicle-side terminal devices allocated to the resource pattern, wherein the resource pattern includes a plurality of radio resources of a data channel within a resource pool, determining a group membership relationship between the second vehicle-side terminal device (NN2; NN3, NN4; NN1) and the group consisting of at least two terminal devices, transmitting data on the data channel through at least one radio resource of the received resource pattern according to the determined group membership, sending additional control information, wherein the additional control information indicates a radio resource used by the second vehicle-side terminal device (NN4), wherein the radio resource used by the second vehicle-side terminal device (NN4) has a lower priority than the radio resources of the resource pattern, determining that the second vehicle-side terminal device (NN4) is not part of the group (G1) consisting of at least two vehicle-side terminal devices, and that a portion of the radio resources with low priority used by the second vehicle-side terminal device (NN4) is included in the resource pattern, and accordingly A portion of radio resources with a low priority used by the second vehicle-side terminal device (NN4) not included in the resource pattern is not used.

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