A method for random access procedure

Abstract

The invention relates to a method for performing a random access procedure in a network comprising a user equipment (20), a base station (10) and a network controlled repeater (NCR) (30) placed between the user equipment (20) and the base station (10).

Description

[0001] DESCRIPTION

[0002] A METHOD FOR RANDOM ACCESS PROCEDURE

[0003] TECHNICAL FIELD

[0004] The invention relates to a method that enables the random access procedure (RAP) to be performed effectively and efficiently in a network comprising a user equipment, a base station and a network control repeater (NCR) located between said user equipment and the base station

[0005] PRIOR ART

[0006] Communication systems enable user equipment (UE) to connect to networks via base stations. In particular, new generation communication systems such as 5G meet the requirements of broadband data communication, low latency, and high user density. These systems enable users to interact with networks for a variety of applications, from data transmission to voice and video communication. The procedures performed during network access have a direct impact on the efficiency of the network and the user experience. One of these procedures, random access, enables user equipment to connect to the network.

[0007] The random access procedure starts with a user equipment sending a request to access the network. During this process, the user equipment tries to connect to the base station with a preamble signal. The preamble signal is used as an initial signal that will allow it to be recognized by the network and is one of the cornerstones of the random access procedure. This signal from the user equipment is received and analyzed by the base station. Then, the base station synchronizes the user equipment with the network by transmitting a Random Access Response (RAR) message that includes timing corrections and temporary identification information. This procedure aims to both connect new users to the network and ensure the continuity of communication for existing users.In existing techniques, the random access procedure is completely handled by the base station. The base station receives all preamble signals, analyzes them, resolves collisions, and performs the necessary resource allocations. However, this structure has a number of disadvantages, especially in network environments with a high number of users. The processing of all random access requests by the base station increases the processing load on the base station and negatively affects the overall performance of the network. For example, in scenarios where many user equipment tries to connect to the network at the same time in a city center, the collision rate on the base station increases and access times are extended. This causes users to wait longer for a connection and degrades the overall user experience.

[0008] Another disadvantage is energy consumption. Depending on the distance of user equipment from the base station, more energy is required to transmit preamble signals. This negatively affects the battery life of user equipment in particular. In addition, the operation of the base station under a high data processing load increases energy consumption and creates difficulties in the sustainability of the network.

[0009] The high collision rates are also one of the important limitations of existing systems. User equipment often uses the same set of preambles during the random access procedure. This can lead to collisions between the signals of user equipment sending the same preamble signal simultaneously. User equipment often uses the same set of preambles during the random access procedure. The increase in collision rates becomes a serious problem especially in scenarios with a high number of users.

[0010] Furthermore, in current techniques, the base station is required to process all signals from user equipment and generate appropriate responses to these signals. This situation emerges as a factor that strains the capacity of the base station and limits the network scalability. For example, in a large shopping mall or event area, the network access requests of the user equipment can exceed the processing capacity of the base station and reduce the service quality.

[0011] Existing random access procedures place a significant burden on base stations, especially in scenarios with a high number of users and wide coverage. This leads toincreased collision rates, higher energy consumption and a negative impact on the user experience. The present art describes systems that enable network controlled repeater (NCR) to optimize the workload on the base station.

[0012] Application document US20240162972 discloses a method for managing uplink and downlink transmissions using network controlled repeaters with different configurations for semi-static uplink transmissions. Thus, it is ensured that the resource allocation between the base station and user equipment is optimized, the overhead is reduced, and the energy efficiency is increased by dynamically managing uplink resources.

[0013] Application document US20240040591 discloses a method focusing on optimizing the transmission and reception timings in network controlled repeaters to improve the performance of upgrade and forwarding operations. In this method, timing configurations are managed efficiently, reducing possible collisions and improving synchronization between the base station and user equipment thus reducing the load on the base station.

[0014] All the problems mentioned above have made it necessary to make an innovation in the relevant technical field as a result.

[0015] BRIEF DESCRIPTION OF THE INVENTION

[0016] The present invention relates to a method to eliminate the above-mentioned disadvantages and bring new advantages to the relevant technical field.

[0017] An object of the invention is to provide a method that enables more efficient and flexible implementation of the random access procedure in 5G and next generation networks.

[0018] To achieve all the objects mentioned above and that will emerge from the following detailed description, a method for performing a random access procedure in a network comprising a user equipment, a base station and a network controlled repeater (NCR) placed between the user equipment and the base station. Accordingly, it comprises the steps of it comprises the following steps of receiving preamble signals sent by theuser equipment for the purpose of accessing the network by the network-controlled repeater, transmitting at least one Random Access Response (RAR) message containing timing corrections and temporary identification information to the user equipment in response to the preamble signals by network-controlled repeater, receiving from and transmitting to the user equipment information and synchronization data relating to the user equipment for as long as the status of the user equipment is appropriate, by network-controlled repeater, transmitting to base station by network-controlled repeater a data containing synchronization information of the user equipment newly connected to the network and the existing user equipment, transmitting the resources reserved for the user equipment based on the data via the physical uplink shared channel (PUSCH) by base station.

[0019] A possible embodiment of the invention is characterized comprising the steps of; it comprises the following steps of receiving preamble signals sent by the user equipment for the purpose of accessing the network by the network-controlled repeater, transmitting at least one Random Access Response (RAR) message containing timing corrections and temporary identification information to the user equipment in response to the preamble signals by network-controlled repeater, receiving from and transmitting to the user equipment information and synchronization data relating to the user equipment for as long as the status of the user equipment is appropriate, by base station, receiving a data containing synchronization information of the user equipment newly connected to the network and the existing user equipment by base station, transmitting resources reserved for the user equipment based on the data via the physical uplink shared channel by base station.

[0020] Another possible embodiment of the invention is characterized comprising the steps of it comprises the following steps of receiving preamble signals sent by the user equipment for the purpose of accessing the network by the network-controlled repeater, transmitting at least one Random Access Response (RAR) message containing timing corrections and temporary identification information to the user equipment in response to the preamble signals by base station, receiving from and transmitting to the user equipment information and synchronization data relating to the user equipment for as long as the status of the user equipment is appropriate, by basestation, receiving a data containing synchronization information of the user equipment newly connected to the network and the existing user equipment by base station, transmitting resources reserved for the user equipment based on the data via the physical uplink shared channel by base station.

[0021] BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a drawing illustrating schematic view of the system for first embodiment.

[0023] Figure 2 is a drawing illustrating schematic view of the system for second embodiment.

[0024] Figure 3 is a drawing illustrating schematic view of the system for third embodiment.

[0025] REFERENCE NUMBERS GIVEN IN THE FIGURE

[0026] 10 Base station

[0027] 20 User equipment

[0028] 30 Network control repeater (NCR)

[0029] 40 First embodiment

[0030] 50 Second embodiment

[0031] 60 Third embodiment

[0032] DETAILED DESCRIPTION OF THE INVENTION

[0033] In this detailed description, the subject matter is explained with references to examples without forming any restrictive effect only in order to make the subject more understandable.

[0034] The invention relates to a method that enables the random access procedure (RAP) to be performed effectively and efficiently in a network comprising a user equipment (20), a base station (10) and a network control repeater (NCR) (30) located between said user equipment (20) and the base station (10). Hereafter, the network-controlled repeater will be referred to as the NCR (30). Hereafter, the random access procedurewill be referred to as the RAR. The RAR is a critical step that enables the establishment of a connection between the user equipment (20) and the base station (10) during network access. This method enables the NCRs (30) to take a more active role in RAR, thus increasing network performance. Thus, significant advantages such as reducing collision rates, reducing energy consumption, reducing the base station's (10) processing load and shortening access times are provided. This makes the network more suitable for serving a large user base and provides higher efficiency in data communication.

[0035] The method includes three different embodiments, namely the first embodiment (40), the second embodiment (50) and the third embodiment (60). Each of the embodiments is customized according to different network needs and technical requirements. Each embodiment adds flexibility and customizability to the network structure by redefining the roles undertaken by the NCR (30) and the base station (10) in different stages of the random access procedure.

[0036] As shown in Figure 1 , in the first embodiment (40), NCR (30) assumes full responsibility for the random access procedure and performs almost all operations independently. NCR (30) first ensures that the preamble signals sent by the user equipment (20) for the purpose of accessing the network are received. NCR (30) ensures that Random Access Response (RAR) messages are sent in response to these signals. These RAR messages include timing corrections and temporary identification information of the user equipment (20). NCR (30) ensures that the information and synchronization data regarding the user equipment (20) are received from the user equipment (20) and transmitted to the user equipment (20) during the period when the status of the user equipment (20) is available. NCR (30) also ensures that a data containing the synchronization information of the new user equipment (20) connected to the network and the existing user equipment (20) is transmitted to the base station (10). Based on this data, the base station (10) transmits the resources reserved for the user equipment (20) via the physical upstream shared channel (PUSCH). The first embodiment (40) significantly reduces the processing load on the base station (10). This leads to a significant reduction in the network access time of the user equipment (20). NCR (30)described in the first embodiment (40) has a complex processing capability and extensive hardware.

[0037] As shown in Figure 2, in the second embodiment (50), some steps of the random access procedure are performed by NCR (30), while more complex operations are performed by the base station (10). In the second embodiment (50), preamble signals are received by NCR (30). NCR (30) ensures that Random Access Response (RAR) messages are sent in response to these signals. During the period when the status of the user equipment (20) is available, base station (10) performs the operations of receiving information and synchronization data regarding the user equipment (20) from the user equipment (20) and transmitting them to the user equipment (20). The base station (10) ensures that a data containing the synchronization information of the new user equipment (20) connected to the network and the existing user equipment (20) is received. Based on this data, the base station (10) transmits the resources reserved for the user equipment (20) via the physical upstream shared channel (PUSCH). For example, the NCR (30) in a shopping mall, after receiving preamble signals and transmitting RAR messages to the user equipment (20), leaves all synchronization operations to the base station (10). NCR (30) described in the second embodiment (50) has a simpler processing capability and hardware. This reduces the energy consumption of the NCR (30). The method used in the second embodiment (50) can be integrated into the existing system more easily than the first embodiment (40).

[0038] As shown in Figure 3, in the third embodiment (60), the role of the NCR (30) is minimal. NCR (30) only receives the preamble signals and transmits them to the base station (10). In the third embodiment (60), all other steps of the random access procedure are performed by the base station (10). For example, a base station in a busy city center can manage the random access procedure entirely by receiving the preamble data from NCR (30). The third embodiment (60) minimizes the demands on the processing capacity of the NCR (30) while ensuring minimal changes to the existing infrastructure. However, this situation may increase the load on the base station (10), and therefore has limited benefits in large-scale networks. However, it is advantageous in terms of providing a low-cost solution and being easily integrated with existing networks.As a result, the method enables more efficient and flexible implementation of the random access procedure in 5G and next generation networks. By expanding the role of NCRs (30) in the network, significant improvements in network performance are achieved. The method provides technical benefits such as reducing collision rates, reducing energy consumption, reducing the load on the base station (10), and shortening access times. Each embodiment addresses different technical needs and scenarios, increasing the scalability of the network and improving the user experience. The method provides a strong foundation not only for current network structures but also for meeting future network requirements.

[0039] In order to achieve all the objects stated above and arising from the above detailed description, the present invention relates to a method for performing a random access procedure in a network comprising a user equipment (20), a base station (10) and a network controlled repeater (NCR) (30) placed between the user equipment (20) and the base station (10). This method is characterized by including the following steps; - receiving preamble signals sent by the user equipment (20) for the purpose of accessing the network by the network-controlled repeater (30),

[0040] - transmitting at least one Random Access Response (RAR) message containing timing corrections and temporary identification information to the user equipment (20) in response to the preamble signals by network-controlled repeater (30),

[0041] - receiving from and transmitting to the user equipment (20) information and synchronization data relating to the user equipment (20) for as long as the status of the user equipment (20) is appropriate, by network-controlled repeater (30),

[0042] - transmitting to base station (10) by network-controlled repeater a data containing synchronization information of the user equipment (20) newly connected to the network and the existing user equipment (20),

[0043] - transmitting the resources reserved for the user equipment (20) based on the data via the physical uplink shared channel (PUSCH) by base station (10).

[0044] A possible embodiment of the invention is that this method includes the steps of - receiving preamble signals sent by the user equipment (20) for the purpose of accessing the network by the network-controlled repeater (30),- transmitting at least one Random Access Response (RAR) message containing timing corrections and temporary identification information to the user equipment (20) in response to the preamble signals by network-controlled repeater (30),

[0045] - receiving from and transmitting to the user equipment (20) information and synchronization data relating to the user equipment (20) for as long as the status of the user equipment (20) is appropriate, by base station(10),

[0046] - receiving a data containing synchronization information of the user equipment (20) newly connected to the network and the existing user equipment (20) by base station (10),

[0047] - transmitting resources reserved for the user equipment (20) based on the data via the physical uplink shared channel by base station (10).

[0048] A possible embodiment of the invention is that this method includes the steps of - receiving preamble signals sent by the user equipment (20) for the purpose of accessing the network by the network-controlled repeater (30),

[0049] - transmitting at least one Random Access Response (RAR) message containing timing corrections and temporary identification information to the user equipment (20) in response to the preamble signals by base station (10),

[0050] - receiving from and transmitting to the user equipment (20) information and synchronization data relating to the user equipment (20) for as long as the status of the user equipment (20) is appropriate, by base station (10),

[0051] - receiving a data containing synchronization information of the user equipment (20) newly connected to the network and the existing user equipment (20) by base station, - transmitting resources reserved for the user equipment (20) based on the data via the physical uplink shared channel by base station (10).

[0052] The scope of protection of the invention is specified in the attached claims and cannot be limited to those explained for sampling purposes in this detailed description. It is evident that a person skilled in the art may exhibit similar embodiments in light of the above-mentioned facts without drifting apart from the main theme of the invention.

Claims

CLAIMS1. A method for performing a random access procedure in a network comprising a user equipment (20), a base station (10) and a network controlled repeater (NCR) (30) placed between the user equipment (20) and the base station (10) characterized in that it comprises the following steps of- receiving preamble signals sent by the user equipment (20) for the purpose of accessing the network by the network-controlled repeater (30), - transmitting at least one Random Access Response (RAR) message containing timing corrections and temporary identification information to the user equipment (20) in response to the preamble signals by network- controlled repeater (30),- receiving from and transmitting to the user equipment (20) information and synchronization data relating to the user equipment (20) for as long as the status of the user equipment (20) is appropriate, by network-controlled repeater (30),- transmitting to base station (10) by network-controlled repeater (30) a data containing synchronization information of the user equipment newly connected to the network and the existing user equipment (20),- transmitting the resources reserved for the user equipment (20) based on the data via the physical uplink shared channel (PUSCH) by base station (10).

2. A method for performing a random access procedure in a network comprising a user equipment (20), a base station (10) and a network controlled repeater (NCR) (30) placed between the user equipment (20) and the base station (10) characterized in that it comprises the following steps of- receiving preamble signals sent by the user equipment (20) for the purpose of accessing the network by the network-controlled repeater (30), - transmitting at least one Random Access Response (RAR) message containing timing corrections and temporary identification information to the user equipment (20) in response to the preamble signals by network- controlled repeater (30),- receiving from and transmitting to the user equipment (20) information and synchronization data relating to the user equipment (20) for as long as the status of the user equipment (20) is appropriate, by base station (10), - receiving a data containing synchronization information of the user equipment (20) newly connected to the network and the existing user equipment (20) by base station (10),- transmitting resources reserved for the user equipment (20) based on the data via the physical uplink shared channel by base station (10).

3. A method for performing a random access procedure in a network comprising a user equipment (20), a base station (10) and a network controlled repeater (NCR) (30) placed between the user equipment (20) and the base station (10) characterized in that it comprises the following steps of- receiving preamble signals sent by the user equipment (20) for the purpose of accessing the network by the network-controlled repeater (30), - transmitting at least one Random Access Response (RAR) message containing timing corrections and temporary identification information to the user equipment (20) in response to the preamble signals by base station (10),- receiving from and transmitting to the user equipment (20) information and synchronization data relating to the user equipment (20) for as long as the status of the user equipment (20) is appropriate, by base station(10), - receiving a data containing synchronization information of the user equipment (20) newly connected to the network and the existing user equipment (20) by base station,- transmitting resources reserved for the user equipment (20) based on the data via the physical uplink shared channel by base station (10).

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