Method for allocating transmission resources based on a random access procedure of a wireless device in a communication network

Abstract

A method for allocating transmission resources based on a random access procedure of a wireless device (14a, 14b, 14c; 14), preferably an ambient Internet of Things (IoT) device, in a communication network (10), wherein a set (20) of resource units (22, 24) of a random access channel of the random access procedure comprises a defined temporal and / or frequency pattern of contention-based resource units (22) and contention-free resource units (24), and the method (100) comprises: - Receiving, by a node (12, 16) of the communication network (10), a message of the random access procedure transmitted from the wireless device (14a, 14b, 14c; 14); - Transmitting, by the node (12, 16), a response message of the random access procedure in response to the received message, wherein the response message comprises a resource information about transmission resources allocated for the wireless device (14a, 14b, 14c; 14) on the random access channel, wherein the allocated transmission resources comprise at least one contention-based resource unit and / or at least one contention-free resource unit of the set of resource units.

Description

[0001] R. 416258

[0002] - 1 -

[0003] Specification

[0004] Title

[0005] Method for allocating transmission resources based on a random access procedure of a wireless device in a communication network

[0006] The invention concerns a method for allocating transmission resources based on a random access procedure of a wireless device, preferably an ambient Internet of Things (loT) device, in a communication network. Further, the invention concerns a wireless device, preferably an ambient loT device, a computer program and a non-transitory computer readable medium.

[0007] Background

[0008] The state of the art in ambient loT devices, as currently studied by 3GPP, encompasses low-complexity, low-energy demanding wireless devices designed for various use-cases, such as inventory management, localization, and sensor data exchange within indoor and outdoor environments. These wireless devices are categorized into three main groups, each with different power consumption and transmission characteristics.

[0009] Type 1 devices have a peak power consumption of approximately 1 pW, comprise an energy storage, and have an initial sampling frequency offset (SFO) of up to 10X ppm. They do not have amplification in the device for either downlink (DL) or uplink (UL) transmission, and their UL transmission is based on backscattering an externally provided carrier wave.

[0010] Type 2a and Type 2b devices have peak power consumption of a few hundred pW, comprise an energy storage, and have an initial SFO of up to 10X ppm. Both types have amplification for DL and / or UL transmission, with Type 2a devices generating UL transmissions by backscattering externally provided carrier waves and Type 2b devices generating UL transmission internally. R. 416258

[0011] - 2 -

[0012] The ambient loT device may be configured to directly and bidirectionally communicate with a user equipment or a base station. The ambient loT device may also be configured to indirectly and bidirectionally communicate with a base station via at least one intermediate node, e.g., a user equipment (UE) or a reader or a relay.

[0013] The ambient loT device may also be configured for receiving downlink transmissions directly from a base station, and for receiving uplinks transmissions to the base station via at least one assisting node. The ambient loT device may alternatively be configured for receiving downlink transmission from the base stations via at least one assisting node, and for transmitting uplinks transmissions directly to the base station.

[0014] The random access procedure for these ambient loT devices may be based on a slotted ALOHA Medium Access (MAC) protocol, where devices access the channel only at the start of a time slot when triggered by the network. In the event of a collision, a resolution mechanism is required to address the simultaneous channel access by multiple ambient loT devices.

[0015] The random access procedure for ambient loT devices can be categorized based on the number of message exchanges and the approach to contention resolution: The procedure may be classified as two-step, three-step, or four-step, depending on the specific sequence of message exchanges involved in initiating and completing the random access process. Additionally, the procedure may be categorized as contention-based or contention-free, based on whether specific mechanisms are employed to mitigate contention and resolve collisions during channel access.

[0016] In conventional wireless networks with random access transmission, UEs transmit a random access preamble via the uplink random access channel. The network responds with a random access response. The U Es respond with a contention resolution identifier (CRID) to be identified by the network. The network then grants the channel to a specified UE based on resources and priority, while other UEs attempt to access the channel at a later random time. R. 416258

[0017] - 3 -

[0018] For a two step random access procedure of an ambient loT device, the first message transmitted to the reader comprises a random access information for identifying the device.

[0019] Disclosure of the invention

[0020] According to a first aspect, there is provided a method for allocating transmission resources based on a random access procedure of a wireless device, preferably an ambient Internet of Things (loT) device, in a communication network. Here, a set of resource units of a random access channel of the random access procedure comprises a defined temporal and / or frequency pattern of contentionbased and contention-free resource units. In other words, the set of resource units is a combination of contention-free and contention-based resource units arranged in a defined pattern in time and / or frequency on the random access channel.

[0021] The method according to the first aspect comprises:

[0022] Receiving, by a node of the communication network, a message of the random access procedure transmitted from the wireless device;

[0023] Transmitting, by the node, a response message of the random access procedure in response to the received message, wherein the response message comprises a resource information about transmission resources allocated for the wireless device on the random access channel, wherein the allocated transmission resources comprise at least one contention-based resource unit and / or at least one contention-free resource unit of the set of resource units.

[0024] The method according to the first aspect can be understood as a method for wireless communications, specifically of operating the wireless device, preferably the ambient loT device, of the communication network.

[0025] According to a second aspect, there is provided a node, preferably a radio node, of a communication network. The node is configured to execute the method according to the first aspect, or its embodiments. R. 416258

[0026] - 4 -

[0027] According to a third aspect, there is provided a computer program comprising machine-readable instructions to cause the node as defined by the second aspect to execute the method according the first aspect, and / or its embodiments.

[0028] According to a fourth aspect, there is provided a non-transitory computer readable medium having stored thereon the computer program as defined by the sixth aspect.

[0029] The communication network may comprise a wireless network and a core network. The communication network may be configured as a cellular network, preferably according to 3GPP specifications, e.g., according to 3GPP release 18 or beyond, or as a wireless Local Area Network (LAN), preferably according to IEEE specifications. The communication network comprises at least the wireless device and the node.

[0030] The wireless device may be configured as a low-energy or low-power device. The wireless device may have a peak power consumption of less than 1 mW, preferably less than 500 pW, specifically less than 100 pW, according to an embodiment, less than 10 pW, e.g., approximately 1 pW.

[0031] The wireless device is preferably configured for energy harvesting, thus exploiting ambient energy sources, e.g., radio waves, thermal radiation, mechanical vibrations etc. as power supply. The wireless device may or may not comprise an energy storage, e.g., a battery.

[0032] Specifically, the wireless device is different from a Reduced Capability (Redcap) device, a narrow band loT (NB-loT) device, a device for enhanced machine-type communication (eMTC), e.g., due to its lower hardware complexity and / or lower costs, and / or smaller form factors. Additionally, a communication between the wireless device and the node may not be controlled by a Radio Resource Control (RRC) layer. Particularly, a Hybrid Automated Repeat Request (HARQ) procedure may not be deployed or deployable for the communication between the wireless device and the node.

[0033] The wireless device may be arranged on or part of R. 416258

[0034] - 5 - an environmental sensor, e.g., deployed in smart buildings, industrial facilities, and urban infrastructure to enable environmental monitoring and control, a smart home device to enable remote monitoring and control of home environments for energy efficiency, security, and convenience, a wearable health and / or fitness tracker to enable personal health and fitness tracking, as well as remote patient monitoring in healthcare applications, an asset tracking device to enable monitoring the location and status of assets, vehicles, and inventory in logistics, transportation, and supply chain management applications, an industrial loT sensor and / or actuator to enable monitoring and controlling machinery, equipment, and processes, a smart agriculture device to enable optimizing resource usage and improving crop yields, a smart city infrastructure unit to enable smart street lighting, traffic monitoring, waste management, public safety, and environmental monitoring.

[0035] The node of the communication network may be a radio or wireless node, or a core network node. The radio node may be a base station or a user equipment, e.g., configured as a reader for ambient loT devices, or a relay or an integrated access and backhaul (IAB).

[0036] The random access procedure may be based on a slotted ALOHA random access MAC protocol. The random access procedure preferably comprises at least the transmission of the message from the wireless device to the node and the transmission of the response message from the node to the wireless device.

[0037] The received message may be a first or a third message of the random access procedure. The transmitted response message may be a second or a fourth message of the random access procedure, respectively.

[0038] The first message may comprise or consist of the random access preamble. The random access preamble comprises the device identification information and may additionally comprise a random number. For a slot-based random access R. 416258

[0039] - 6 - procedure, e.g., slotted ALOHA, the random number is used for determining a slot for transmitting the first message.

[0040] The second message may comprise of consist of the random access response. The response message or the random access response may be an echo of the random number and / or the device identification information comprised by the random access preamble. The response message or the random access response may further comprise the resource information about the transmission resources allocated for the wireless device on the random access channel.

[0041] Messages of the random access procedure transmitted between the node and the wireless device, i.e., messages transmitted from the wireless device and received by the node and / or messages transmitted from the node and received by the wireless device, may either be transmitted directly, specifically, on the physical random access channel (PRACH), or indirectly via an intermediate or assisting node of the communication network. As an example, a message received by the wireless device may be transmitted from a core node of the communication network via a radio node, e.g., a base station, of the communication network, to the wireless device, and vice versa.

[0042] The defined pattern of the set of resource units may comprise or consist of a first number of successive contention-based resource units followed by a second number of successive contention-free resource units, optionally, followed by a third number of successive contention-bases resource units followed by a fourth number of successive contention-free resource units, wherein the first and the second number, optionally the third and the fourth number may be the same or different natural numbers.

[0043] A contention-free resource unit is a resource unit, e.g., a slot, of the random access channel, which is allocated exclusively or reserved for the wireless device, i.e., which can be used, by the wireless device, for a transmission without contenting with other wireless devices. Consequently, a transmission using the contention-free resource unit has a high probability of successful reception at the node. R. 416258

[0044] - 7 -

[0045] A contention-based resource unit is a resource unit, e.g., a slot, of the random access channel, which is allocated to multiple wireless devices or may at least not be reserved exclusively for the wireless device, i.e., which can be used, by the wireless device, for a transmission, however, potentially requiring contenting with other wireless devices.

[0046] In other words, some resources units are used for unscheduled random access (original slotted-ALOHA) and some resource units are used for scheduled transmission, wherein the respective resource units are interleaved in time and / or frequency. Scheduling transmission is performed, by the node, in response to receiving the (first and / or the third) message of the random access procedure.

[0047] The resource information about the allocated transmission resources may indicate the contention-based and / or contention-free resource units, e.g., by indicating or comprising respective indices, e.g., slot indices.

[0048] In the step of receiving, a plurality of message may be received by the node from a plurality of wireless devices, preferably ambient loT devices, each of the messages corresponding to a random access procedure of the respective wireless device. In the step of transmitting, a plurality of response messages may be transmitted to the plurality of wireless devices. Each of the response messages comprises a resource information about transmission resources allocated for at least one of the plurality of wireless devices, wherein the allocated transmission resources comprise at least one contention-based resource unit and / or at least one contention-free resource unit.

[0049] Here, some of the plurality of wireless devices may be allowed to participate in contention according to a slotted ALOHA MAC protocol. Some other of the plurality of wireless devices may only be allowed to transmit in scheduled slots, i.e., are not allowed to take part in contention. Contention-free and contentionbased resource units may be parallel in time or in frequency. As a result, a combination of frequency-division multiple access (FDMA) with slotted ALOHA, and / or a combination of time-division multiple access (TDMA) with slotted ALOHA may be provided on the random access channel. R. 416258

[0050] - 8 -

[0051] The proposed solution proposes a pattern of contention-free and contentionbased resource units on a random access channel for allocating transmission resources, thus allowing a scheduling entity to prioritize transmissions from a specific wireless device by assigning resources which do not require contention with other wireless devices. This is particularly beneficial for low-energy or low- power devise like ambient loT devices which may not have sufficient energy for multiple successive channel access requests. Therefore, the proposed solution can also be understood as an energy-efficient slotted ALOHA procedure. Vice versa, channel access requests from other wireless devices may be handled with reduced priority by assigning resources which require contention with other wireless devices.

[0052] According to an embodiment, the defined pattern has a periodicity in time and / or frequency. In other words, contention-free resources units and contention-based resource units are interleaved in time and / or frequency on the random access channel. A ratio between contention-free resource units and contention-based resource units in the pattern may be either pre-configured or configured by the node. This allows to flexibly adapt the distribution of resource units on the random access channel.

[0053] According to an embodiment, the defined pattern, specifically, a / the periodicity in time and / or frequency of the defined pattern, is pre-configured, by the node, or configured, by the node, based on at least one of a type of the wireless device, or a use case information of the wireless device, preferably indicating a use case as part of which the method is performed, or a location information of the wireless device, preferably indicating an identifier of a zone comprising the wireless device.

[0054] The (pre-)configuration may be performed, by the node, in a pre-configuration phase of the wireless device, or, alternatively, set automatically, by the node, based on a type of the wireless device(s) and / or the use case information and / or the location information.

[0055] The type may be selected from a group of ambient loT device types, e.g., type 1 , type 2a, type 2b. The use case as part of which the method is performed may be a command use case or an inventory use case, e.g., according to 3GPP R. 416258

[0056] - 9 - specifications for ambient loT devices. By (pre-)configuring the defined pattern, a ratio between contention-free resource units and contention-based resource units in the pattern may be set.

[0057] As an example, for type 1 ambient loT devices, a pattern with a higher ratio of contention-free resource units to contention-based resource units may be configured, wherein for type 2a or type 2b ambient loT devices, a pattern with lower ratio of contention-free resource units to contention-based resource units may be configured. This allows for adapting random access transmission resources based on device’s requirements or parameters, thus increasing the efficiency of the transmissions on the random access channel.

[0058] According to an embodiment, the set of resource units comprises all resource units of an access round or a paging round. Here the access round and or the paging round may be triggered or initiated by the node, e.g., by transmitting a trigger message to the wireless device(s) of the communication network. A paging round may comprise multiple access rounds. An access round may comprise multiple consecutive resource units, preferably multiple slots. The set of resource units may also comprise all resource units of multiple consecutive paging rounds. This allows for providing the random channel with the defined pattern for a period which duration may be specified adaptively, thus further increasing both flexibility and efficiency of the random channel access.

[0059] According to an embodiment, the method further comprises: allocating, by the node, the transmission resources by selecting at least one resource unit from the set, wherein the transmission resources are allocated, by the node, based on a device-based information representing at least one of o a type of the wireless device, or o a failure information, preferably indicating a number of failed access attempts, of the wireless device, or o an energy information, preferably indicating an energy level, of the wireless device, or o a buffer information, preferably indicating a size or a fill level of a buffer, of the wireless device, or R. 416258

[0060] - 10 - o a data information, preferably indicating a criticality of data, specifically in a / the buffer, of the wireless device, or o a location information of the wireless device, preferably indicating an identifier of a zone comprising the wireless device, or o a use case information of the wireless device, preferably indicating a use case as part of which the method is performed, or o information provided by an upper layer of a communication stack of the communication network.

[0061] As an example, contention-free resource units may be allocated for a wireless device with little or no energy storge, and / or with a number of failed access attempts above a defined access attempt threshold, and / or with an energy level below a defined energy threshold, and / or with a fill level above a define buffer threshold, and / or with a criticality of data above a defined criticality threshold, and / or which is located within or outside a defined zone, and / or which performs the method as part of a defined use case. The upper layer may include at least one of a group comprising: application layer, transport layer, network layer. This allows for allocating the transmission resources based on device-specific information, thus allowing for individualizing the allocation of transmission resources by accounting for the device’s requirements.

[0062] According to an embodiment, the method further comprises:

[0063] Determining, by the node, a priority of the wireless device for the allocation of a contention-free resource unit based on the device-based information, wherein the transmission resources are allocated based on the determined priority of the wireless device.

[0064] The priority may be determined based on the device-based information and a threshold or a set of respective thresholds allowing for assigning a priority to the wireless device. The priority may be selected from a group of priorities including at least: high priority, low priority, and optionally comprises additional priorities. The priority may also be determined based on a pre-configuration of the wireless device, e.g., the priority of the wireless device may be pre-configured by the communication network.

[0065] For a wireless device with high priority, at least one contention-free resource unit may be allocated. For a wireless device with low priority, only contention-based R. 416258

[0066] - 11 - resource units may be allocated. This allows to efficiently allocate a limited amount of contention-free resource units to the wireless device(s) with the highest priority.

[0067] According to an embodiment, the response message comprises a resource information about further transmission resources allocated for at least one further wireless device on the random access channel, the further allocated transmission resources comprise at least one contention-based resource unit and / or at least one contention-free resource unit, and the response message is preferably transmitted as a broadcast message. The broadcast message may indicate the resource units allocated to the respective wireless device, e.g., by comprising a respective index of the allocated resource unit, e.g., a slot index. This allows to efficiently signal the resource allocation to a group of wireless devices.

[0068] According to an embodiment, the method further comprises:

[0069] Re-configuring, by the node, preferably after transmitting the response message, the random access channel to comprise contention-based resource units, only.

[0070] This allows to switch between a configuration of the random access channel with the defined pattern to a random access channel with contention-based resource units only.

[0071] According to an embodiment, the method further comprises:

[0072] Receiving, by the node, at least one further message transmitted, by the wireless device, by using the allocated transmission resources, wherein the further message is o a further message of the random access procedure or o a message of a further random access procedure of the wireless device, or o a message comprising payload data.

[0073] The further message may be transmitted, by the wireless device, in response to receiving the response message transmitted from the node. The further message may also be transmitted as part of a further random access procedure of the R. 416258

[0074] - 12 - wireless device. This allows for effectively using the allocated transmission resources on the random access channel with the defined pattern.

[0075] According to a further aspect of the invention, there is provided a (wireless) communication network comprising at least the wireless device and the node.

[0076] The non-transitory computer readable medium is preferably configured to store the computer program to be executed by a processor of the first LAN element and / or the second LAN element and / or the communication network. The non- transitory computer readable media may include RAM, ROM, EEPROM, and any other non-volatile storage device.

[0077] Description of the figures

[0078] Exemplary embodiments of the present invention are depicted in the figures, which are not to be construed as limiting the claims, and are explained in greater detail below.

[0079] Fig. 1 schematically illustrates a communication network according to an embodiment of the invention;

[0080] Fig. 2 schematically illustrate a method according to an embodiment of the invention; and

[0081] Fig. 3 schematically illustrate a set of resource units with a defined pattern according to an embodiment of the invention.

[0082] Fig. 1 schematically illustrates a communication network 10 according to an aspect of the invention. The communication network 10 is configured as a cellular communication network 10, preferably according to 3GPP specifications. The communication network 10 may comprise a core network and a wireless network.

[0083] The communication network 10 comprises a radio node 12, configured as a user equipment 12, or a reader 12 for an ambient Internet of Things (loT) device, or a relay node acting as a reader, and a plurality of wireless devices 14a, 14b, 14c, R. 416258

[0084] - 13 - preferably configured as ambient loT devices 14a, 14b, 14c, specifically according to 3GPP specifications. The wireless devices 14a, 14b, 14c are collectively represented by reference sign 14. The communication network 10 further comprises a radio node 16 configured as a base station 16.

[0085] For requesting access to a transmission medium of the communication network 10, the wireless devices 14 are configured to perform a method for initiating a preferably slot-based random access procedure. Here, the random access procedure may be based on a slotted ALOHA random access MAC protocol. I.e., the wireless devices 14 are configured to begin a transmission only at the beginning of a slot. The length of the slot preferably equals the sum of a packet transmission time and a maximum propagation delay in the network to ensure that both transmission and reception of a data packet can be completed within one slot.

[0086] The random access procedure may be established between the respective wireless device 14a, 14b, 14c and the reader 12, or between the respective wireless device 14a, 14b, 14c and the base station 16. For the latter case, transmission between the wireless devices 14 and the base station 16 may be routed or relayed via the reader 12.

[0087] According to an alternative embodiment, the base station 16 may be configured as a reader for the wireless devices 14. Consequently, messages of the random access procedure are transmitted directly between the base station 16 and the wireless devices 14a, 14b, 14c (i.e., without routing them via the radio node 12).

[0088] The radio 12 and / or the base station 16 are configured for allocating transmission resources based on a random access procedure of the wireless devices 14 by performing the method according to the first aspect of the invention, and / or its embodiments, as further described in Fig. 2.

[0089] Fig. 2 schematically illustrates a method 100 for allocating transmission resources based on a random access procedure of a wireless device, preferably an ambient Internet of Things (loT) device, in a communication network, e.g., the communication network 10 according to Fig. 1 . Here, a set of resource units of a random access channel of the random access procedure comprises a defined R. 416258

[0090] - 14 - temporal and / or frequency pattern of contention-based and contention-free resource units.

[0091] Fig. 3 schematically illustrates a set 20 of resource units 22, 24 configured as transmission slots 22, 24 of the random access channel. The set 20 of transmission slots 22, 24 comprises a defined temporal pattern of contentionbased slots 22 and contention-free slots 24.

[0092] The method 100 comprises a step 110 of receiving, by the node 12, a message of the random access procedure transmitted from the wireless device 14a or the wireless devices 14.

[0093] The method 100 may comprise a step 120 of determining, by the node 12, preferably in response to receiving the message, a priority of the wireless device(s) 14 for the allocation of a contention-free resource unit 24 based on a device-based information. Here, the device-based information represents at least one of a type of the wireless device 14, or a failure information, preferably indicating a number of failed access attempts, of the wireless device 14, or an energy information, preferably indicating an energy level, of the wireless device 14, or a buffer information, preferably indicating a size or a fill level of a buffer, of the wireless device 14, or a data information, preferably indicating a criticality of data, specifically in a I the buffer, of the wireless device 14, or a location information of the wireless device 14, preferably indicating an identifier of a zone comprising the wireless device 14, or a use case information of the wireless device, preferably indicating a use case as part of which the method 100 is performed, or information provided by an upper layer of a communication stack of the communication network 10.

[0094] The method 100 may comprise a step 130 of allocating, by the node 12, the transmission resources by selecting at least one resource unit from the set based the determined priority. R. 416258

[0095] - 15 -

[0096] The method 100 comprises a step of 140 of transmitting, by the node 12, a response message of the random access procedure in response to the received message. The response message comprises a resource information about the transmission resources allocated for the wireless device 14a on the random access channel. The allocated transmission resources comprise at least one contention-based resource unit 22 and / or at least one contention-free resource unit 24, preferably the at least one contention-free resource unit 24, of the set 20 of resource units 22, 24.

[0097] The method 100 may comprise a step 150 of receiving, by the node 12, at least one further message transmitted, by the wireless device 14a, by using the allocated transmission resources, wherein the further message is a further message of the random access procedure or a message of a further random access procedure of the wireless device, or a message comprising payload data.

Claims

R. 416258- 16 -Claims1 . A method (100) for allocating transmission resources based on a random access procedure of a wireless device (14a, 14b, 14c; 14), preferably an ambient Internet of Things (loT) device, in a communication network (10), wherein a set (20) of resource units (22, 24) of a random access channel of the random access procedure comprises a defined temporal and / or frequency pattern of contention-based resource units (22) and contention-free resource units (24) , and the method (100) comprises:Receiving (110), by a node (12, 16) of the communication network (10), a message of the random access procedure transmitted from the wireless device (14a, 14b, 14c; 14);Transmitting (140), by the node (12, 16), a response message of the random access procedure in response to the received message, wherein the response message comprises a resource information about transmission resources allocated for the wireless device (14a, 14b, 14c;14) on the random access channel, wherein the allocated transmission resources comprise at least one contention-based resource unit (22) and / or at least one contention-free resource unit (24) of the set (20) of resource units (22, 24).

2. The method (100) according to claim 1 , wherein the defined pattern has a periodicity in time and / or frequency.

3. The method (100) according to one of the preceding claims, wherein the defined pattern, specifically a / the periodicity in time and / or frequency of the defined pattern, is pre-configured or configured, by the node (12, 16), based on at least one of a type of the wireless device (14a, 14b, 14c; 14), or a use case information of the wireless device (14a, 14b, 14c; 14), preferably indicating a use case as part of which the method (100) is performed, orR. 416258- 17 - a location information of the wireless device (14a, 14b, 14c; 14), preferably indicating an identifier of a zone comprising the wireless device (14a, 14b, 14c; 14).

4. The method (100) according to one of the preceding claims, wherein the set (20) of resource units (22, 24) comprises all resource units (22, 24) of an access round or a paging round.

5. The method (100) according to one of the preceding claims, further comprising:Allocating (130), by the node (12, 16), the transmission resources by selecting at least one resource unit (22, 24) from the set, wherein the transmission resources are allocated, by the node (12, 16), based on a device-based information representing at least one of o a type of the wireless device (14a, 14b, 14c; 14), or o a failure information, preferably indicating a number of failed access attempts, of the wireless device (14a, 14b, 14c; 14), or o an energy information, preferably indicating an energy level, of the wireless device (14a, 14b, 14c; 14), or o a buffer information, preferably indicating a size or a fill level of a buffer, of the wireless device (14a, 14b, 14c; 14), or o a data information, preferably indicating a criticality of data, specifically in a / the buffer, of the wireless device (14a, 14b, 14c; 14), or o a location information of the wireless device (14a, 14b, 14c; 14), preferably indicating an identifier of a zone comprising the wireless device (14a, 14b, 14c; 14), or o a use case information of the wireless device (14a, 14b, 14c; 14), preferably indicating a use case as part of which the method (100) is performed, or o information provided by an upper layer of a communication stack of the communication network (10).

6. The method (100) according to claim 5, further comprising:Determining (120), by the node (12, 16), a priority of the wireless device (14a, 14b, 14c; 14) for the allocation of a contention-free resource unitR. 416258- 18 -(24) based on the device-based information, wherein the transmission resources are allocated based on the determined priority of the wireless device (14a, 14b, 14c; 14).

7. The method (100) according to one of the preceding claims, wherein the response message comprises a resource information about further transmission resources allocated for at least one further wireless device (14a, 14b, 14c; 14) on the random access channel the further allocated transmission resources comprise at least one contention-based resource unit (22) and / or at least one contention-free resource unit (24), and the response message is preferably transmitted as a broadcast message.

8. The method (100) according to one of the preceding claims, further comprising:Re-configuring, by the node (12, 16), preferably after transmitting the response message, the random access channel to comprise contentionbased resource units (22), only.

9. The method (100) according to one of the preceding claims, further comprising:Receiving (150), by the node (12, 16), at least one further message transmitted, by the wireless device (14a, 14b, 14c; 14), by using the allocated transmission resources, wherein the further message is o a further message of the random access procedure or o a message of a further random access procedure of the wireless device (14a, 14b, 14c; 14), or o a message comprising payload data.

10. A node (12, 16) of a communication network (10) configured to execute the method (100) according to one of claims 1 to 9.11 . A computer program comprising machine-readable instructions to cause the node (12, 16) according to claim 10 to execute the method (100) according to one of claims 1 to 9.R. 416258- 19 -12. A non-transitory computer readable medium having stored thereon the computer program according to claim 11 .

Images